CN116291365A - Rock drilling rig and its protection system - Google Patents

Abstract

This application discloses a rock drilling rig and its protection system, including: a shield body, a movable door, a drill pipe, a rotating motor, a propulsion motor, a main control solenoid valve, a movable door sensor and a movable door relay; wherein, the shield body Used to form a protective space for accommodating at least a part of the rock drilling rig and an inspection channel connected thereto; the movable door is used to open or close the inspection channel; the sensor is used to detect whether the inspection channel is open; the drill rod is used to realize the rock drilling function; The motor is used to drive the drill pipe to rotate; the propulsion motor is used to drive the drill pipe to advance; the main control solenoid valve is used to control the operation of the rotary motor or/and propulsion motor of the rock drilling rig; the movable door sensor is used to detect the movable door of the rock drilling rig Whether to open the inspection channel. The beneficial effect of the present application is that it provides a rock drilling rig and its protection system that take into account maintenance and rock drilling safety.

Description

Rock drilling rig and its protection system

technical field

The present application relates to the technical field of rock drilling rigs, in particular, to a rock drilling rig and a protection system thereof.

Background technique

In the related art, the rock drilling rig is a kind of construction machinery, which is mainly used for fixed-point rock drilling operations on the engineering site. The propulsion beam located outside the cab is provided with a drill pipe, which is driven to rotate by a rotating motor during rock drilling. , driven by the propulsion motor, so that the rock formation is cut open after the drill pipe touches the rock formation, and the rock drilling function is realized. These rotary motors, propulsion motors, drill rods and other moving parts are operated by the corresponding joysticks in the cab of the rock drilling rig when the rock drilling rig is running or overhauled, which is easy to cause injury to people close to the rock drilling rig and has potential safety hazards.

In the related art, the Chinese patent document CN202560096U provides a rock drilling rig, which sets a shield outside the drill pipe and connects the inside of the shield with a negative pressure fan to solve the problem of dust generated when the rock drilling rig works and isolates the drill pipe from the outside world. open question.

But the relevant technology does not provide any technical enlightenment to solve the problem that the movable parts on the rock drilling rig are easy to cause injury to the people around the rock drilling rig when it is operating or overhauling.

Contents of the invention

The Summary section of this application serves to introduce concepts in a simplified form that are described in detail in the Detailed Description section that follows. The contents of this application are not intended to identify key features or essential features of the claimed technical solution, nor are they intended to be used to limit the scope of the claimed technical solution.

In order to solve the technical problems mentioned in the background technology section above, some embodiments of the present application provide a rock drilling rig and a protection system thereof.

As the first aspect of the present application, some embodiments of the present application provide a rock drilling rig, including: a shield body, a movable door, a drill rod, a rotary motor, a propulsion motor, a main control solenoid valve, a movable door sensor and a movable door. door relay. Wherein, the shield body is formed with a protective space for at least a part of the rock drilling rig and an inspection channel communicating with the protective space; the movable door is movably connected to the shield body so that the movable door has at least a first movable position and a second movable position relative to the shield body Two active positions: when the movable door is in the first active position, the inspection passage is closed; when the movable door is in the second active position, the inspection passage is opened; the drill pipe is used to realize the rock drilling function; the rotary motor is used to drive the drill pipe to rotate; the propulsion motor is used It is used to drive the drill pipe to advance; the main control solenoid valve is used to control the operation of the rotary motor or/and the propulsion motor of the rock drilling rig; the movable door sensor is used to detect whether the movable door of the rock drilling rig is open for inspection; the movable door relay is used to receive The control signal of the movable door sensor controls whether the main control solenoid valve operates; the movable door relay is electrically connected with the main control solenoid valve and the movable door sensor respectively so that the movable door relay receives the signal from the movable door sensor to indicate that the inspection channel is open. The control signal de-energizes the master control solenoid to stop or slow down the rotation motor and/or the propulsion motor.

Further, the rock drilling rig further includes: a reset switch; the reset switch is used for the user to operate to reset the movable door relay to the state where the main control solenoid valve is powered on; the reset switch is electrically connected to the movable door relay.

Further, the rock drilling rig also includes: a mode selection switch and a mode selection relay; wherein, the mode selection switch is used for the user to select to be in the working mode or the limited mode; the mode selection relay is used to receive the control signal of the mode selection switch and control The rotary motor or/and the propulsion motor are in the working state or limited state; the mode selection switch and the mode selection relay form an electrical connection so that when the mode selection switch is in the working mode, the rotary motor or/and the propulsion motor are in the working state and in the mode selection When the switch is in the limited mode, the rotation motor or/and the propulsion motor are in a restricted state; the rotational speed of the rotation motor or/and the propulsion motor in the restricted state is lower than that in the working state.

Further, the rock drilling rig also includes: a rotation control solenoid valve; the rotation control solenoid valve is used to control the operation of the rotation motor; the rotation control solenoid valve is electrically connected to the mode selection switch so that the rotation can be made when the mode selection switch is in the restricted mode Control solenoid valve action.

Further, the rock drilling rig also includes: a propulsion control solenoid valve; the propulsion control solenoid valve is used to control the operation of the propulsion motor; the propulsion control solenoid valve is electrically connected to the mode selection relay so that the mode selection relay is in the limited position of the mode selection switch mode to activate the propulsion control solenoid valve.

Further, the rock drilling rig also includes: a rod changing mechanism and a rod changing control solenoid valve; wherein, the rod changing mechanism is used to replace the drill rod; the rod changing control solenoid valve is used to control the operation of the rod changing mechanism; the rod changing control solenoid valve It is electrically connected with the mode selection relay so that when the mode selection switch is in the restricted mode, the mode selection relay will activate the lever-changing control solenoid valve to stop the operation of the lever-changing mechanism.

Further, the rock drilling rig also includes: an operation protection switch and an operation protection relay; the operation protection switch is used for the user to operate to unlock the restricted mode; the operation protection relay is used for controlling the action of the main control solenoid valve; The control solenoid valve and the operation protection switch form an electrical connection so that when the operation protection switch is triggered, the operation protection relay makes the main control solenoid valve act so as to restore the operation of the propulsion motor of the rock drilling rig.

Further, the rock drilling rig also includes: a clamping mechanism and a clamping control solenoid valve; wherein, the clamping mechanism is used to clamp the drill pipe; the clamping control solenoid valve is used to control the operation of the clamping mechanism; the clamping control solenoid valve It is electrically connected with the mode selection relay so that when the mode selection switch is in the limited mode, the mode selection relay will activate the clamping control solenoid valve to stop the operation of the clamping mechanism.

Further, the rock drilling rig also includes: a clamping protection relay, which is used to control the action of the clamping control solenoid valve; wherein, the clamping protection relay is electrically connected to the clamping control solenoid valve and the operation protection relay respectively to enable operation protection When the relay acts, the clamping protection relay makes the clamping control solenoid valve act so as to resume the operation of the clamping mechanism.

As a second aspect of the present application, some embodiments of the present application provide a protection system applicable to a rock drilling rig. The protection system includes: a shield body, a movable door, a main control solenoid valve, a movable door sensor and a movable door relay. Wherein, the shield body is formed with a protective space for at least a part of the rock drilling rig and an inspection channel communicated with the protective space; the movable door is movably connected to the shield body so that the movable door has at least a first movable position and a second relative to the shield body Two active positions: when the movable door is in the first active position, the inspection passage is closed; when the movable door is in the second active position, the inspection passage is opened; the main control solenoid valve is used to control the operation of the rotary motor or/and propulsion motor of the rock drilling rig; The movable door sensor is used to detect whether the movable door of the rock drilling rig is open to the detection channel; the movable door relay is used to receive the control signal of the movable door sensor and control whether the main control solenoid valve operates; the movable door relay is respectively connected with the main control solenoid valve and the movable door The sensor constitutes an electrical connection so that the trap door relay will de-energize the main control solenoid valve when receiving the control signal representing the opening of the inspection channel from the trap door sensor, so as to stop or slow down the operation of the rotary motor or/and the propulsion motor of the rock drilling rig.

The beneficial effect of the present application is that it provides a rock drilling rig and its protection system that take into account maintenance and rock drilling safety.

More specifically, some embodiments of the present application may produce the following specific beneficial effects:

The provided rock drilling rig is provided with a dodge door on the shield body, the dodge door can be opened to approach and overhaul the rock drilling rig during maintenance, and the dodge door is closed when the rock drilling rig is in normal use. Like this, can not only be convenient for inspection and maintenance, but also prevent personnel from moving parts such as the drill pipe on the rock drilling rig, the rotary motor, and the propulsion motor during normal use. At the same time, by setting the movable door sensor and the main control solenoid valve, if the movable door is opened during normal use of the rock drilling rig, the rotating motor or/and the propulsion motor will be controlled to decelerate or stop running, so as to avoid damage to the rock drilling rig when the rock drilling rig performs rock drilling operations. Injury to those around you. And during maintenance, with the opening of the movable door, the rotating motor and the propulsion motor are decelerated or stopped, which improves the safety of the rock drilling rig during maintenance and normal operation.

By setting the mode selection switch and the mode selection relay, the mode selection switch is in the restricted mode during maintenance, at this time the speed of the rotating motor and the propulsion motor is reduced or even stopped, preventing personnel from accidentally touching the high-speed rotating motor and propulsion motor during maintenance , to further ensure the safety of maintenance personnel.

By setting the operation protection switch, in the restricted mode, the operation protection switch needs to be triggered to further control the slow running of the propulsion motor, or to enable the clamping mechanism to work. That is to say, the operator needs to trigger the operation protection switch and the switch that makes the push motor or the clamping mechanism act at the same time to make the push motor or the clamping mechanism work. On the one hand, the push motor or the clamping mechanism can work during maintenance, which is convenient for the maintenance personnel to troubleshoot. On the other hand, it can play a fool-proof effect, avoid misoperation and cause harm to maintenance personnel, and ensure the safety of maintenance personnel.

Description of drawings

The accompanying drawings, which constitute a part of this application, are included to provide a further understanding of the application and make other features, objects and advantages of the application apparent. The drawings and descriptions of the schematic embodiments of the application are used to explain the application, and do not constitute an improper limitation to the application.

In addition, the same or similar reference numerals denote the same or similar elements throughout the drawings. It should be understood that the drawings are schematic and elements and elements have not necessarily been drawn to scale.

In the attached picture:

Fig. 1 is an overall schematic diagram of a rock drilling rig according to an embodiment of the present application;

Fig. 2 is a structural schematic view of the movable door in Fig. 1 when it is in the first position;

Fig. 3 is a schematic structural view of the movable door in Fig. 1 when it is in a second position;

Fig. 4 is a schematic diagram of the hydraulic circuit connection between the rotary motor and the main control solenoid valve in the embodiment shown in Fig. 1;

Fig. 5 is a schematic diagram of the hydraulic circuit connection between the propulsion motor and the main control solenoid valve in the embodiment shown in Fig. 1;

Fig. 6 is a schematic diagram of the hydraulic circuit connection between the rod changing mechanism and the rod changing control solenoid valve and between the clamping mechanism and the clamping control solenoid valve in the embodiment shown in Fig. 1;

Fig. 7 is a schematic diagram of the circuit connection between the movable door sensor and the movable door relay in the embodiment shown in Fig. 1;

Fig. 8 is a schematic diagram of circuit connection between structures such as a mode selection switch and an operation protection switch in the embodiment shown in Fig. 1;

Fig. 9 is a schematic diagram of the circuit connection between the mode selection control relay and the propulsion control solenoid valve and other structures in the embodiment shown in Fig. 1;

Fig. 10 is a schematic diagram of the circuit connection between the clamping control relay and the clamping control solenoid valve in the embodiment shown in Fig. 1;

Fig. 11 is a schematic diagram of a partial structure of a protection system according to an embodiment of the present application.

Reference signs:

100, rock drilling rig; 100a, first straight line direction;

101. Rotary motor;

102. Propel motor;

103, shield body; 103a, protective space; 103b, inspection channel; 103c, opening; 103d, pivot axis;

104. Dodge door;

105. Locking device;

106. Main control solenoid valve;

107. Dodge door sensor;

108, movable door relay; 108a, the first normally open contact; 108b, the second normally open contact; 108c, the third normally open contact;

109. Reset switch;

110. Mode selection switch;

111. Mode selection relay; 111a, first normally closed contact; 111b, second normally closed contact; 111c, third normally closed contact;

112, rotation control solenoid valve; 112a, first solenoid valve; 112b, second solenoid valve;

113, the propulsion control solenoid valve; 113a, the third solenoid valve; 113b, the fourth solenoid valve;

114. Auxiliary hydraulic pipeline;

115. Rod changing mechanism;

116, changing rod control solenoid valve; 116a, the fifth solenoid valve; 116b, the sixth solenoid valve;

117, clamping mechanism; 117a, clamping oil cylinder; 117b, clamping oil cylinder; 117c, clamping oil cylinder;

118, clamping control solenoid valve; 118a, the seventh solenoid valve; 118b, the eighth solenoid valve; 118c, the ninth solenoid valve;

119. Operation protection switch;

120. Pilot overflow valve;

121. An electromagnet clamping a protective relay;

122. The normally open contact of the clamping protection relay;

123. The electromagnet of the main control relay;

124. The normally open contact of the main control relay;

125. Operate the electromagnet of the protective relay;

126. Operate the normally open contact of the protection relay;

127. Pilot oil circuit;

128, drill pipe.

Detailed ways

Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the disclosure are shown in the drawings, it should be understood that the disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these examples are provided so that the understanding of this disclosure will be thorough and complete. It should be understood that the drawings and embodiments of the present disclosure are for exemplary purposes only, and are not intended to limit the protection scope of the present disclosure.

It should also be noted that, for the convenience of description, only the parts related to the related invention are shown in the drawings. In the case of no conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other.

It should be noted that concepts such as "first" and "second" mentioned in this disclosure are only used to distinguish different devices, modules or units, and are not used to limit the sequence of functions performed by these devices, modules or units or interdependence.

It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative and not restrictive, and those skilled in the art should understand that unless the context clearly indicates otherwise, it should be understood as "one or more" multiple".

The present disclosure will be described in detail below with reference to the accompanying drawings and embodiments.

Referring to FIGS. 1 to 10 , a rock drilling rig 100 includes: a drill rod 128 , a rotary motor 101 , a propulsion motor 102 , a shield body 103 and a movable door 104 .

Wherein, the drill rod 128 is arranged on the propulsion beam of the rock drilling rig 100, and is used for drilling into the rock formation to realize the rock drilling function during the rock drilling operation of the rock drilling rig. The rotary motor 101 is connected to one end of the drill rod 128 and is used to drive the drill rod 128 to rotate so that the drill rod 128 can destroy rock formations in contact with it. The propulsion motor 102 is connected to the drill rod 128, and is used to drive the drill rod 128 to advance. The drill rod 128 in this embodiment is driven by the propulsion motor 102 to move along the first linear direction 100a. The driving method can be that when the propulsion motor 102 rotates, The drilling rod 128 is pushed to slide through transmission modes such as rack and pinion and chain transmission. That is, when the rock drilling rig 100 is working, the propelling motor 102 drives the drill rod 128 to extend into the rock formation along the first linear direction 100a, and the propelling direction of the drill rod 128 is the same as the first linear direction 100a. In this embodiment, both the propulsion motor 102 and the rotation motor 101 are hydraulic motors, that is, the rotation and propulsion of the drill rod 128 are driven by hydraulic pressure. The rotary motor 101 is detachably connected to the propulsion motor 102, so that the drill rod 128 can be replaced according to work needs.

It should be noted that the control of the rotary motor 101 and the propulsion motor 102 by the operating device in the cab of the rock drilling rig 100 is a technical solution well known to those skilled in the art, and this part is not an improvement of the present application, and will not be added here. repeat.

1 to 3, the shield body 103 is formed with a protective space 103a for accommodating at least a part of the rock drilling rig 100 and an inspection channel 103b communicating with the protective space 103a.

The movable door 104 is movably connected to the shield body 103 so that the movable door 104 has at least a first movable position and a second movable position relative to the shield body 103 . When the movable door 104 is in the first movable position, the inspection passage 103b can be closed. When the movable door 104 is in the second movable position, the inspection channel 103b can be opened.

The shield body 103 can also be made of a solid plate, or a combination of a profile and a mesh plate as shown in FIGS. 1 to 3 .

The dodge door 104 can be movably connected with the shield body 103, including but not limited to a sliding connection or a swivel connection, so that the dodge door 104 can open and close the inspection channel 103b.

As a specific solution, as shown in FIGS. 1 to 3, the shield body 103 is provided with an opening 103c for the drill rod 128 to pass through at opposite ends parallel to the first linear direction 100a, and the opening 103c is connected to the shield body. The protection space 103a of 103 is connected, so that parts such as the drill pipe 128 of the rock drilling rig 100, the rotary motor 101, and the propulsion motor 102 enter the protection space 103a. The inspection channel 103b is opened between the two openings 103c of the shield body 103 and is located on one side of the protective space 103a. The movable door 104 is also located between the two openings 103c, and is located on the side of the shield body 103 where the inspection channel 103b is opened. The movable door 104 is rotatably connected to the shield body 103 around a pivot axis 103d, the pivot axis 103d is located on one side of the movable door 104 and is parallel to the first linear direction 100a, that is, the pivot axis 103d is parallel to the drill rod 128 direction of advancement.

Through the above scheme, when the rock drilling rig 100 is in normal operation, the dodge door 104 is placed in the first position to close the inspection passage 103b, and the drill pipe 128 and other components of the rock drilling rig 100 located in the protective space 103a pass through the dodge door 104 and the shield body. 103 is separated from the outside world, so as to prevent users (maintenance personnel) around the rock drilling rig 100 from accidentally contacting these working parts and being injured.

When performing maintenance, the maintenance channel 103b can be opened by turning the movable door 104 to the second position, so that the maintenance personnel can pass through the maintenance passage 103b, and the maintenance personnel can check the drill rods of the rock drilling rig 100 in the protective space 103a. 128 and other parts are overhauled.

It should be noted that, in order to ensure that the rock drilling rig 100 maintains the movable door 104 in a corresponding position (such as the first position) during normal rock drilling operations to ensure the safety of the rock drilling rig 100, further, the movable door 104 and the protective cover A locking device 105 is arranged between the main body 103, and the locking device 105 can be a spring lock, a hasp, a magnetic lock, etc., which are commonly used in the field and can lock the dodge door 104 in the second position, so that the rock drilling rig 100 can operate normally. Keep the inspection channel 103b closed during work, so as to prevent personnel around the rock drilling rig 100 from touching parts such as the drill pipe 128 working in the protected space 103a.

Specifically, the rock drilling rig 100 of this embodiment further includes: a main control solenoid valve 106 , a movable door sensor 107 and a movable door relay 108 .

Wherein, the main control solenoid valve 106 is used to control the operation of the rotary motor 101 or/and the propulsion motor 102 of the rock drilling rig 100, that is, there are hydraulic circuits between the rotary motor 101 and the propulsion motor 102 and the main control solenoid valve 106 respectively, and All three are connected to a hydraulic pump on the rock drilling rig 100 through the hydraulic circuit, and the hydraulic pump is connected to the oil tank of the rock drilling rig 100, and the hydraulic oil used when the rock drilling rig 100 works is stored in the oil tank, so that After the hydraulic pump of the rock drilling rig 100 is started, when the main control solenoid valve 106 is energized, the hydraulic pump and the oil tank can provide hydraulic pressure to the rotary motor 101 or the propulsion motor 102, and the rotary motor 101 or the propulsion motor 102 runs, and then the drill rod is realized correspondingly. 128 propulsion or rotation. When the main control solenoid valve 106 is de-energized, the hydraulic pump and the oil tank are blocked from delivering hydraulic pressure to the rotating motor 101 and the propulsion motor 102 through the main control solenoid valve 106 .

The movable door sensor 107 is used to detect whether the movable door 104 of the rock drilling rig 100 is opened to the inspection channel 103b. The movable door relay 108 is used for receiving the control signal of the movable door sensor 107 and controlling whether the main control solenoid valve 106 acts. The dodge door relay 108 is electrically connected with the main control solenoid valve 106 and the dodge door sensor 107 respectively so that the dodge door relay 108 makes the main control solenoid valve 106 shut off when receiving the control signal representing the opening of the maintenance channel 103b sent by the dodge door sensor 107. Electricity thereby stops or slows down the operation of the rotation motor 101 and/or the propulsion motor 102 . Specifically, the dodge door sensor 107 is a non-contact sensor, and the dodge door sensor 107 can detect the status of the inspection passage by using the sensor to cooperate with metal materials or other sensing methods. In this embodiment, the sensor Adam and Eva of ABB Company are used as an example to realize the sensing function, so as to illustrate the sensing function of the movable door sensor 107 . In use, the signal generator Adam is installed at the end of the movable door 104 away from the pivot axis 103d, and the signal reflector Eva is installed at the side of the shield body 103 close to the movable door 104 . When the movable door 104 is in the first position, Eva is within the detection range of Adam, the movable door relay 108 is energized and the main control solenoid valve 106 is energized, and the rotation motor 101 and the propulsion motor 102 can work normally. When the dodge door 104 was rotated from the first position to the second position, Adam was away from Eva, and now the dodge door sensor 107 sent a control signal to the dodge door relay 108, so that the dodge door relay 108 was de-energized and the main control solenoid valve 106 was de-energized , so that the rotation motor 101 and the propulsion motor 102 are decelerated or even stopped.

Based on the above solution, if the movable door 104 is accidentally opened during the rock drilling operation of the rock drilling rig 100, the rotating motor 101 and the propulsion motor 102 will decelerate or even stop, so as to avoid accidents when someone approaches the active parts such as the working drill pipe 128.

Specifically, the rock drilling rig 100 further includes: a reset switch 109 . Wherein, the reset switch 109 is used for the user to operate to reset the movable door relay 108 to the state where the main control solenoid valve 106 is energized. The reset switch 109 is electrically connected to the movable door relay 108 . The reset switch 109 can be arranged on the side of the guard body 103 where the inspection passage 103b is provided, so that when the personnel near the rock drilling machine observe that the movable door 104 is in the second active position, the passage can be closed by operating the button switch after the inspection passage 103b. , so that the movable door relay 108 is reset and the main control solenoid valve 106 is energized, so that the rotation motor 101 and the propulsion motor 102 can return to the normal working state.

However, when the reset switch 109 is arranged on the shield body 103, it is easy to be misoperated by maintenance personnel and personnel around the rock drilling rig. Therefore, in this embodiment, the reset switch 109 is specifically arranged in the cab of the rock drilling rig 100, so as to facilitate driving. After the personnel confirm that the maintenance operation is completed, the reset switch 109 is manually operated. Furthermore, the reset switch 109 is a button switch with a light and automatic reset function. That is, when the button switch is pressed, the reset current of the dodge door relay 108 is triggered to reset the dodge door relay 108 and remain in a state where the main control solenoid valve 106 can be energized. And when the push button switch is released, the push button switch is pushed by its own spring or other elastic resetting parts to automatically reset to the state of not being pressed. The light on the button switch is electrically connected with the dodge door relay 108, and flashes when the dodge door 104 is rotated from the second position to the second position to reset the dodge door relay 108, so as to remind the driver to operate the reset switch 109.

Specifically, the rock drilling rig 100 further includes: a mode selection switch 110 and a mode selection relay 111 .

Wherein, the mode selection switch 110 is a gear switch, which is set in the cab of the rock drilling rig 100, and has at least two gear positions for the user to choose whether to be in the working mode or the limited mode. This enables the driver to limit the state of the drill rod 128 on the rock drill 100 during operation and maintenance, that is, to slow down or even stop the rotation and propulsion of the drill rod 128 during maintenance, so as to ensure the safety of the maintenance personnel.

The mode selection relay 111 is used to receive the control signal of the mode selection switch 110 and control the rotation motor 101 and/or the propulsion motor 102 to be in a working state or a limited state.

The mode selection switch 110 is electrically connected to the mode selection relay 111 so that when the mode selection switch 110 is in the working mode, the rotation motor 101 or/and the propulsion motor 102 are in the working state, and when the mode selection switch 110 is in the limited mode, the rotation motor 101 or/and the propulsion motor 102 are in a restricted state. The rotation speed of the rotation motor 101 and/or the propulsion motor 102 in the constrained state is lower than that in the working state.

The working state of the rotary motor 101 is the state when the rotary motor 101 drives the drill rod 128 to rotate so that the drill rod 128 can destroy the rock formation when the drill rod 128 is drilling normally. is n ₁ ; the limited state of the rotary motor 101 is the state of the rotary motor 101 when the rotating speed of the drill pipe 128 is reduced to ensure the safety of the maintenance personnel during the maintenance of the rock drilling rig 100, and it is defined that the rotary motor 101 is driven by The rotational speed of the drill rod 128 is n ₂ .

Correspondingly, the working state of the propulsion motor 102 is the state when the propulsion motor 102 drives the drill rod 128 to advance along the first linear direction 100a so that the drill rod 128 can extend into the rock formation when the drill rod 128 is drilling normally. At this time, the propulsion motor 102 drives the lower drill rod 128 at a propulsion speed along the first linear direction 100a to be v ₁ . The restricted state of the propulsion motor 102 is the state of the propulsion motor 102 when the propulsion speed of the drill rod 128 is reduced to ensure the safety of the maintenance personnel during the maintenance of the rock drilling rig 100, and the propulsion motor 102 is defined to drive the lower drill rod 128 at this time. The propulsion speed in the first linear direction 100a is v ₂ .

In this embodiment, n ₁ >n ₂ and v ₁ >v ₂ are defined, that is, the rotation speeds of the propulsion motor 102 and the rotation motor 101 during the maintenance operation are lower than those of the rock drilling operation. Based on the above scheme, the rock drilling rig 100 Or during rock drilling operations, the mode selection switch 110 is manually operated by the driver to switch its mode, so that the rotary motor 101 and the propulsion motor 102 are decelerated during maintenance, and the maintenance personnel are prevented from contacting the fast-rotating rotary motor 101 or the drive motor to ensure Maintenance personnel are safe.

In the related art, in order to prevent clothing and limbs from getting involved in the rotating parts during maintenance of the rock drilling rig 100, the rotation of the drill rod 128 must be stopped. Therefore, the rotation speed n ₂ of the rotating motor 101 in this embodiment is limited to 0. However, when the rock drilling rig 100 is overhauled, the propulsion motor 102 only needs to be slow enough so that the propulsion speed of the drill rod 128 is reduced to a relatively slow degree.

At this moment, the operator of the maintenance personnel has enough reaction time to avoid limbs from being squeezed and hurt by the drill pipe 128 and the rock formation, or even if contact occurs, serious injuries are avoided because the drill pipe 128 rotates at a slower speed.

Moreover, the propulsion motor 102 maintains a limited running state, which can facilitate maintenance personnel to observe the propulsion action of the drill rod 128 to repair the drill rod 128 . In this embodiment, the value range of the speed at which the propulsion motor 102 drives the drill rod in a restricted state is 0≦v ₂ ≦2mm/s.

During normal rock drilling operations, the mode selection switch 110 is placed in the working mode, so that the drill pipe 128 operates normally to realize the rock drilling function, and the states of the rotating motor 101 and the propulsion motor 102 are controlled by the sensor and the reset switch 109, that is, the sensor When it is detected that the inspection passage 103b is open, the two are switched from the working state to the restricted state, and when the inspection passage 103b returns to closed and the reset switch 109 is pressed, the rotation motor 101 and the propulsion motor 102 can be restored to the working state .

When maintenance is needed, the dodge door 104 can be opened to repair the parts of the rock drilling rig 100 located in the protective space 103a of the shield body 103, so the opening of the maintenance channel 103b is no longer detected by the sensor to limit the movement of the drill rod 128. Instead, the driver switches the mode selector switch 110 to the limited mode to limit the rotation and advancement of the drill rod 128 .

Based on the above solution, the operating state of the drill pipe 128, the rotating motor 101 and the propulsion motor 102 can be adjusted by the driver operating the mode selection switch 110, so that the driver's active operation can ensure the safety of the maintenance personnel during maintenance.

And through the cooperation of the mode selection switch and the dodge door sensor 104 and other components, the state of the drill rod 128, the rotating motor 101 and the propulsion motor 102 can be flexibly adjusted according to the actual use or maintenance of the rock drilling rig 100, so that it can be used in rock drilling. Safety protection is provided for maintenance personnel and other personnel around the rock drilling rig 100 during operation and maintenance, avoiding injuries caused by misoperation, and improving the use safety of the rock drilling rig.

As a specific solution, the rock drilling rig 100 further includes: a rotation control solenoid valve 112 . The spin control solenoid valve 112 is used to control the operation of the swing motor 101 . The rotation control solenoid valve 112 is electrically connected to the mode selection switch 110 to activate the rotation control solenoid valve 112 when the mode selection switch 110 is in the limited mode. That is, when the driver of the rock drilling rig 100 switches the mode selection switch 110 to the limited mode, the rotation control solenoid valve 112 is activated to realize the switching of the rotary motor 101 from the working state to the limited state.

Wherein, the connection mode between the rotation control solenoid valve 112 and the rotation motor 101 is that the rotation control solenoid valve 112 is arranged on the hydraulic pipeline between the rotation motor 101 and the main control solenoid valve 106, that is, only when the oil circuit of the main control solenoid valve 106 is connected Only then can the hydraulic pressure provided by the oil tank be delivered to the rotary control solenoid valve 112, and only after the oil circuit of the rotary control solenoid valve 112 is connected, can the hydraulic pressure be delivered to the rotary motor 101 to realize the rotation of the rotary motor 101.

When the relay is working, it is necessary to realize the on-off conversion of the circuit through electromagnetic changes, and this undoubtedly takes time. The advantage of using the mode selection switch 110 to directly control the action of the rotation control solenoid valve 112 to complete the on-off of the hydraulic circuit flowing to the rotation motor 101 is that the rotation motor 101 can directly make the rotation motor 101 when the mode selection switch 110 is switched to a limited mode. Stop rotating without the intervention of the mode selection relay 111, so that the stop of the rotary motor 101 can be completed most quickly, and even if the mode selection relay 111 fails, the rotary motor 101 can also be stopped, thereby ensuring the safety of maintenance personnel.

Specifically, the rock drilling rig 100 further includes: a propulsion control solenoid valve 113 . The propulsion control solenoid valve 113 is used to control the operation of the propulsion motor 102 . The propulsion control solenoid valve 113 is electrically connected to the mode selection relay 111 so that the mode selection relay 111 activates the propulsion control solenoid valve 113 when the mode selection switch 110 is in the restricted mode. That is, when the driver of the rock drilling rig 100 switches the mode selection switch 110 to the limited mode, the mode selection relay 111 controls the action of the push control solenoid valve to switch the propulsion motor 102 from the working state to the limited state.

Wherein, the connection mode between the propulsion control solenoid valve 113 and the propulsion motor 102 is that the propulsion control solenoid valve 113 is arranged on the hydraulic pipeline between the propulsion motor 102 and the main control solenoid valve 106, that is, only when the oil circuit of the main control solenoid valve 106 is connected Only then can the hydraulic pressure provided by the oil tank be sent to the propulsion control solenoid valve 113, and after the oil circuit of the propulsion control solenoid valve 113 is connected, the hydraulic pressure is sent to the propulsion motor 102 to realize the rotation of the propulsion motor 102. Meanwhile, there is an auxiliary hydraulic pipeline 114 between the main control solenoid valve 106 and the propulsion motor 102 . The auxiliary hydraulic pipeline 114 and the hydraulic pipeline equipped with the propulsion control solenoid valve 113 are two parallel pipelines, that is, the hydraulic oil passing through the main control solenoid valve 106 can flow through the hydraulic pipeline provided with the propulsion solenoid valve. The propulsion motor 102 may also have flow to the propulsion motor 102 through the auxiliary hydraulic line 114 . The auxiliary hydraulic pipeline 114 should also be provided with a flow regulating device, such as a relief valve, a throttle valve, etc., to limit the pressure of the liquid flowing through the auxiliary hydraulic pipeline 114 .

Based on the above solution, when the mode switch is in the working mode, the pipeline provided with the propulsion control solenoid valve 113 and the auxiliary hydraulic pipeline 114 are both connected, so that the propulsion motor 102 enters the working state when the oil circuit of the main control solenoid valve 106 is connected. When the mode selection switch 110 is switched to the limited mode, the mode selection relay 111 controls the action of the propulsion control solenoid valve 113 to block the hydraulic oil on the pipeline provided with the propulsion control solenoid valve 113. At this time, the main control solenoid valve 106 and the propulsion motor 102 can only communicate through the auxiliary hydraulic pipeline 114, and the flow regulating device on the auxiliary hydraulic pipeline 114 limits the flow of hydraulic oil flowing to the propulsion motor 102, so that the speed of the propulsion motor 102 is limited, so that the propulsion motor 102 can be operated by state to restricted state transition. In this way, the rotation speed change of the propulsion motor 102 when the mode selection switch 110 is in different modes is completed.

It should be noted that, through the cooperative use of the propulsion control solenoid valve 113 and the rotation control solenoid valve 112 , when the oil circuit on the main control solenoid valve 106 is disconnected, the rotation motor 101 and the propulsion motor 102 stop rotating synchronously. When the oil circuit of the main control solenoid valve 106 is connected, the rotating motor 101 and the propulsion motor 102 can realize different rotation speed changes, so that the states of the rotating motor 101 and the propulsion motor 102 can be flexibly controlled according to actual operating conditions.

In the related art, a plurality of drill rods 128 are often arranged on the rock drilling rig 100, and after one of the drill rods 128 is drilled into the rock formation, the drill rod 128 is clamped by the clamping mechanism 117 so that the drill rod 128 is connected with the rotary motor 101 and The propulsion motor 102 is disengaged, and another drill rod 128 is connected to the rotary motor 101 and the propulsion motor 102 through a rod changing mechanism 115, so as to realize the connection of multiple drill rods 128, so that the drill rod 128 reaches deeper rock formations during rock drilling . That is, the connection between different drill rods 128 is realized through the clamping mechanism 117 and the rod changing mechanism 115 . The work of each hydraulic cylinder on the rod changing mechanism 115 and the clamping mechanism 117 is controlled by the corresponding switch in the cab. Since there is no relationship with the technical problem and the corresponding technical solution that this application aims to solve, the control method in this aspect adopts this method. The general configuration of the domain will not be repeated in this article.

Among them, the clamping mechanism 117 is generally composed of a hydraulic cylinder and a splint driven by the hydraulic cylinder. The action of the hydraulic cylinder is used to drive the splint to move, so that the splint is close to each other, and then the clamping of the drill pipe 128 between the splints is realized. Hold, so that drilling rod 128 is removed from rotary motor 101 and propulsion motor 102. Moreover, the rock drilling rig 100 is generally provided with a plurality of clamping mechanisms 117 along the length direction of the drill rod 128 to ensure the stability of the drill rod 128 when clamped by the clamping mechanisms 117 .

The rod changing mechanism 115 is generally a combination of mechanical arms and grippers respectively driven by different hydraulic cylinders. The hydraulic pressure is used to make the mechanical arms swing, and the grippers are used to grasp the drill rod 128 . When replacing the drill rod 128, the drill rod 128 separated from the rotary motor 101 and the propulsion motor 102 is grasped by the gripper, and the drill rod 128 is moved to the drill rod 128 on the rock drilling rig 100 by the mechanical arm for placing the drill rod 128. In the rod 128 warehouse, another drill rod 128 in the drill rod 128 warehouse is grasped by the mechanical arm and the jaws and then transported to the rotary motor 101, and then the clamping mechanism 117 is used to stabilize the drill rod 128 so that the drill rod 128 is installed to the rotary motor 101 and the driving motor to realize the connection of the drill rod 128.

In order to realize the rod changing function of the rock drilling rig 100 in the related art, the rock drilling rig 100 of this embodiment further includes: a rod changing mechanism 115 and a rod changing control solenoid valve 116 . Wherein, the rod changing mechanism 115 is used to realize the replacement of the drill rod 128, and its structure is consistent with the components used for the rod changing function of the rock drilling rig 100 in the related art, and will not be repeated here. The rod changing control solenoid valve 116 is used to control the operation of the rod changing mechanism 115 . The lever change control solenoid valve 116 is electrically connected to the mode selection relay 111 so that the mode selection relay 111 activates the lever change control solenoid valve 116 to stop the operation of the lever change mechanism 115 when the mode selection switch 110 is in the restricted mode.

The way that the rod-changing control solenoid valve 116 controls the rod-changing mechanism 115 is as follows: the rod-changing control solenoid valve 116 is arranged on each hydraulic cylinder of the rod-changing mechanism 115 and is connected to the hydraulic pipeline of the oil tank, and the oil passage of the rod-changing control solenoid valve 116 It directly controls the on-off of the oil circuit between the oil tank and the hydraulic cylinder of the rod change mechanism 115.

Based on the above scheme, when the mode selector switch 110 is in the limited mode, the hydraulic oil flowing to each hydraulic cylinder in the rod changing mechanism 115 is blocked by the rod changing control solenoid valve 116, so as to avoid maintenance personnel from working in the rod changing mechanism during maintenance work. 115 contacts the rod changing mechanism 115 when gripping the drilling rod 128 or swings and is injured.

Specifically, in order to realize the clamping function of the drill pipe 128 as in the rock drilling rig 100 in the related art, the rock drilling rig 100 further includes: a clamping mechanism 117 and a clamping control solenoid valve 118 . Wherein, the clamping mechanism 117 is used for clamping the drill pipe 128 , and its structure is consistent with the parts used for clamping the drill pipe 128 in the rock drilling rig 100 in the related art, and will not be repeated here. The clamping control solenoid valve 118 is used to control the operation of the clamping mechanism 117 . The clamping control solenoid valve 118 is electrically connected to the mode selection relay 111 so that the mode selection relay 111 activates the clamping control solenoid valve 118 to stop the operation of the clamping mechanism 117 when the mode selection switch 110 is in the limited mode.

The clamping control solenoid valve 118 controls the clamping mechanism 117 in the following manner: the clamping control solenoid valve 118 is arranged on the hydraulic pipeline connected to each hydraulic cylinder of the clamping mechanism 117 and connected to the oil tank, and the oil passage of the clamping control solenoid valve 118 directly control the on-off of the oil circuit between the oil tank and the hydraulic cylinder of the clamping mechanism 117.

Based on the above scheme, when the mode selector switch 110 is in the limited mode, the hydraulic oil flowing to each hydraulic cylinder in the clamping mechanism 117 is blocked by the clamping control solenoid valve 118, so as to avoid maintenance personnel from being in the clamping mechanism during maintenance work. 117 acts to clamp the drill rod 128 when the hand is between the clamping mechanism 117 and the drill rod 128 and causes an injury.

Specifically, referring to FIG. 8 and FIG. 10 , the rock drilling rig 100 further includes: an operation protection switch 119 and an operation protection relay. The operation protection switch 119 is for the user to operate to unlock the restricted mode. The operation protection relay is used to control the action of the main control solenoid valve 106 . The operation protection relay is electrically connected with the main control solenoid valve 106 and the operation protection switch 119 respectively so that when the operation protection switch 119 is triggered, the operation protection relay makes the main control solenoid valve 106 act so as to restore the operation of the propulsion motor 102 of the rock drilling rig 100 .

When the mode selection switch 110 is in the limited mode, the oil passage of the propulsion control solenoid valve 113 is disconnected, and only when the oil passage of the main control solenoid valve 106 is connected can the propulsion motor 102 be activated. Therefore, the so-called unrestricted mode means that the circuit and hydraulic circuit of the rock drilling rig 100 are under the action of the reset switch 109, so that the oil circuit of the main control solenoid valve 106 can be connected during subsequent operations, so that the propulsion motor 102 can Running at slow speeds under restraint.

The operation protection switch 119 is specifically a button switch with an automatic reset function, and its automatic reset function is realized by a spring or other parts. For example, in actual use, the operation protection switch 119 can be selected from the NP2-BA31 button of Chint Company.

In the related art, the propulsion of the drill rod 128 can be realized by operating the corresponding operation button or joystick in the cab with one hand. With the above scheme of this embodiment, only when the operation protection switch 119 is triggered, the main control solenoid valve 106 is activated, and the propulsion motor 102 can be further controlled to drive the drill in a limited state through the joystick or operation button in the cab. Rod 128 advances. In this way, in the limited mode, if you want to propel the motor 102 to run, you need to operate the corresponding joystick and operate the protection switch 119 at the same time, which often requires the driver to operate with both hands in actual work, which can avoid the driver's misoperation or unconscious operation. The rod causes the propulsion motor 102 to work, thereby further ensuring the safety of maintenance personnel.

In a specific embodiment, it is considered that when the rock drilling rig 100 is overhauled, it is necessary to overhaul the parts of the clamping mechanism 117 that are in contact with the drill pipe 128 and clamp the drill pipe 128, so as to ensure that its assembly accuracy meets the use requirements. Therefore, it is necessary for the clamping mechanism 117 to clamp the drill pipe 128 during maintenance. However, if the clamping mechanism 117 is directly operable when the mode selector switch 110 is in the limited mode, it is easy to cause maintenance personnel's hands to be pinched by the clamping mechanism 117 due to misoperation. To solve this problem, the rock drilling rig 100 of this embodiment further includes: a clamping protection relay, which is used to control the action of the clamping control solenoid valve 118 . Wherein, the clamping protection relay is electrically connected with the clamping control solenoid valve 118 and the operation protection relay respectively so that when the operation protection relay operates, the clamping protection relay makes the clamping control solenoid valve 118 act so as to resume the operation of the clamping mechanism 117, That is, in the restricted mode, the driver can operate the protective switch 119 with one hand and the switch in the driver's cab to make the clamping mechanism 117 act correspondingly, so that the clamping mechanism 117 can produce clamping action.

Based on the above solutions, the mode selection switch 110 is switched to the limited mode during maintenance, so that the clamping mechanism 117 cannot operate. When the action of the clamping mechanism 117 is required, both hands are required, which reduces the possibility of misoperation and further ensures the safety of maintenance personnel.

Referring to Figure 11, a protection system is suitable for a rock drilling rig. The protection system includes: a shield body 103 , a movable door 104 , a main control solenoid valve 106 , a movable door sensor 107 and a movable door relay 108 . Wherein, the shield body 103 is formed with a protective space 103a for accommodating at least a part of the rock drilling rig 100 and an inspection channel 103b communicating with the protective space 103a. The movable door 104 is movably connected to the shield body 103 so that the movable door 104 has at least a first movable position and a second movable position relative to the shield body 103 . When the movable door 104 is in the first movable position, the inspection passage 103b is closed. When the movable door 104 is in the second movable position, the maintenance channel 103b is opened. The main control solenoid valve 106 is used to control the operation of the rotary motor 101 and/or the propulsion motor 102 of the rock drilling rig 100 . The movable door sensor 107 is used to detect whether the movable door 104 of the rock drilling rig 100 is opened for detection. The movable door relay 108 is used for receiving the control signal of the movable door sensor 107 and controlling whether the main control solenoid valve 106 acts. The dodge door relay 108 is electrically connected with the main control solenoid valve 106 and the dodge door sensor 107 respectively so that the dodge door relay 108 makes the main control solenoid valve 106 shut off when receiving the control signal representing the opening of the maintenance channel 103b sent by the dodge door sensor 107. Electricity thereby stops or slows down the operation of the rotary motor 101 and/or the propulsion motor 102 of the rock drilling rig 100 .

It should be noted that the protection system of this embodiment should also include the aforementioned reset switch 109, mode selection switch 110, mode selection relay 111, rotation control solenoid valve 112, propulsion control solenoid valve 113, rod change control solenoid valve 116, clip Holding control solenoid valve 118, operation protection switch 119, operation protection relay and clamping protection relay, etc., to realize all the aforementioned functions of making the rock drilling rig 100 work normally and protecting the maintenance personnel of the rock drilling rig 100.

The circuit connection and hydraulic circuit between the protection system and the various components of the rock drilling rig 100 in this embodiment will be illustrated below as a specific embodiment of the rock drilling rig 100 and its protection system.

Fig. 4 shows the hydraulic circuit between the main control solenoid valve 106 and the rotation control solenoid valve 112, wherein the rotation control solenoid valve 112 includes a first solenoid valve 112a and a second solenoid valve 112b, both of which are passed through pipelines and The corresponding reversing valve and other hydraulic structures on the pipeline are connected to the rotary motor 101, and the two are also connected to the main control solenoid valve 106 through the pipeline, so that when the oil circuit of the main control solenoid valve 106 is connected, the oil pump and the main control solenoid valve 106 are connected. The hydraulic oil supplied from the oil tank is sent to the swing motor 101 . And when the first solenoid valve 112a and the second solenoid valve 112b are de-energized, or the main control solenoid valve 106 is de-energized, the hydraulic oil delivery circuit from the oil tank to the rotary motor 101 is blocked, so that the rotary motor 101 stops running.

The hydraulic circuit between the main control solenoid valve 106 and the propulsion control solenoid valve 113 is shown in FIG. 5 . Wherein, the propulsion control solenoid valve 113 includes a third solenoid valve 113a and a fourth solenoid valve 113b, the third solenoid valve 113a is connected to the main control solenoid valve 106 through a pipeline, and the third solenoid valve 113a is also passed through a pipeline and on the pipeline. Corresponding reversing valves and other hydraulic structures are connected to the propulsion motor 102, and a pilot relief valve 122 is also provided on the pipeline to control the hydraulic pressure of the pipeline to stabilize the hydraulic pressure of the pipeline. On this basis, the fourth solenoid valve 113b is connected to the pilot oil circuit 127 of the pilot relief valve 122 to control the on-off of the hydraulic oil supplied by the pilot oil circuit to the pilot relief valve 122 .

It should be noted that an auxiliary hydraulic pipeline 114 is provided between the main control solenoid valve 106 and the propulsion motor 102 . Thus when the oil circuit of the main control solenoid valve 106, the oil circuit on the third solenoid valve 113a and the oil circuit on the fourth solenoid valve 113b are all connected, the hydraulic oil supplied by the oil pump and the oil tank passes through the auxiliary hydraulic pipeline 114 and the setting The pipeline for the propulsion control solenoid valve 113 is delivered to the propulsion motor 102, so that the propulsion motor 102 can drive the drill rod 128 to advance in a working state under the operation of the driver. When the oil circuit of the third solenoid valve 113a is disconnected from the oil circuit of the fourth solenoid valve 113b, and the oil circuit of the main control solenoid valve 106 is connected, the hydraulic oil is delivered from the auxiliary hydraulic pipeline 114 to the propulsion motor 102, so that the propulsion motor 102 drives the drill pipe 128 in a restricted state and advances slowly. When the oil circuit of the main control solenoid valve 106 is disconnected, the hydraulic oil cannot be delivered to the propulsion motor 102 , so that the propulsion motor 102 stops.

FIG. 6 shows the hydraulic circuit between the rod changing mechanism 115 and the rod changing control solenoid valve 116 . Wherein, the rod change control solenoid valve 116 includes a fifth solenoid valve 116a and a sixth solenoid valve 116b, and the hydraulic cylinder on the rod change mechanism 115 used to drive the relevant mechanical structure to clamp the drill pipe 128 is connected to the fifth solenoid valve 116a through a pipeline. . The hydraulic cylinder on the rod changing mechanism 115 used to drive the relevant mechanical structure to drive the drill rod 128 to move to the drill rod 128 storage of the rock drilling rig 100 is connected to the sixth solenoid valve 116b through a pipeline. In this way, when the oil passage of the fifth solenoid valve 116a is disconnected from the oil passage of the sixth solenoid valve 116b, the lever changing mechanism 115 cannot operate. When the oil passage of the fifth solenoid valve 116a is connected to the oil passage of the sixth solenoid valve 116b, the driver can perform corresponding operation to make the lever changing mechanism 115 actuate.

FIG. 6 shows the hydraulic circuit between the clamping mechanism 117 and the rod change control solenoid valve 116 . This figure shows the situation when the number of clamping mechanisms 117 on the rock drilling rig 100 is three, that is, the clamping mechanism 117 includes a clamping cylinder 117a, a clamping cylinder 117b and a clamping cylinder 117c. In this case, the rod change control solenoid valve 116 includes a seventh solenoid valve 118a, an eighth solenoid valve 118b and a ninth solenoid valve 118c, and these three solenoid valves are respectively connected to the corresponding clamping mechanism 117 through pipelines for realizing On the hydraulic cylinder of the clamping function. In this way, when the oil passage of the seventh solenoid valve 118a, the oil passage of the eighth solenoid valve 118b and the oil passage of the ninth solenoid valve 118c are disconnected, the lever changing mechanism 115 cannot operate. When the oil circuit of the seventh solenoid valve 118a, the oil circuit of the eighth solenoid valve 118b and the oil circuit of the ninth solenoid valve 118c are connected, the driver can perform corresponding operations to make the corresponding clamping oil cylinders 117a, 117b and 117c action.

Figure 7 shows a circuit diagram of the connection between the movable door relay 108 and the movable door sensor 107, and Figure 8 shows a circuit diagram of the connection between the movable door relay 108 and the main control solenoid valve 106 and other structures. Wherein, when the mode selection switch 110 is in the normal mode, if the dodge door 104 closes the maintenance channel 103b, the electromagnet of the dodge door relay 108 is energized, so that the first normally open contact 108a and the second normally open contact of the dodge door relay 108b and the third normally open contact 108c are connected, and then the main control solenoid valve 106 and the rod change control solenoid valve 116 respectively connected to each normally open contact of the movable door relay 108 are energized. At the same time, the electromagnet 121 holding the protection relay is energized, and the normally open contact 122 holding the protection relay is connected. In this way, the rotation motor 101 , the propulsion motor 102 , the rod changing mechanism 115 and the clamping mechanism 117 can operate normally.

When the mode selection switch 110 is in the normal mode, if the inspection channel 103b is open, the part of the rock drilling rig 100 located in the protective space 103a of the shield body 103 is exposed, which is prone to danger. Then dodge door sensor 107 sends control signal to dodge door relay 108, makes the electromagnet de-energization of dodge door relay 108, and each normally open contact of dodge door relay is disconnected, and rotation motor 101, propulsion motor 102, change bar mechanism 115 and clip The holding mechanism 117 stops running to avoid safety accidents.

With reference to shown in Figure 7, after the dodge door 104 is closed and the inspection channel 103b is closed, when the reset switch 109 is pressed, the electromagnet of the dodge door relay 108 is energized, so that the normally open contacts 108a, 108b, 108c is turned on, and then the main control solenoid valve 106 connected with the normally open contacts 108a, 108b, 108c of the movable door relay respectively, the rod change control solenoid valve 116 is energized and the clamping control solenoid valve 118 is energized, so that when driving The indoor operation rotates the motor 101, the propulsion motor 102, the rod changing mechanism 115 and the clamping mechanism 117 operate.

FIG. 8 also shows a circuit diagram of the connection between the mode selection relay 111 and the mode selection switch 110 . Wherein, a part of the circuit of the mode selection switch 110 is connected with the rotation control solenoid valve 112, so that when the mode selection switch 110 switches to the limited mode, the rotation control solenoid valve 112 is de-energized to stop the rotation motor 101 .

Another part of the circuit where the mode selection switch 110 is located is provided with a master control relay. When the mode selection switch 110 was in the working mode, the electromagnet 123 of the main control relay was energized so that the normally open contact 122 of the main control relay was connected, and the normally open contact 122 of the main control relay was connected to the second contact of the movable door relay 108. A normally open contact 108a is located in the circuit, so that in the working mode, the first normally open contact 108a of the movable door relay 108 can form an electrical connection with the main control solenoid valve 106 and other structures through the normally open contact 122 of the main control relay. connected to realize the control of the operation of the rotating motor 101, the propulsion motor 102, the rod changing mechanism 115 and the clamping mechanism 117 by using the movable door relay 108 in the working mode.

When the mode selection switch 110 is in the limited mode, the common circuit where the electromagnet of the main control relay and the mode selection switch 110 are located is de-energized, and the normally open contact of the main control relay is disconnected, so that in the limited mode, the movable door relay 108 no longer controls the operation of the rotation motor 101 , the propulsion motor 102 , the rod changing mechanism 115 and the clamping mechanism 117 .

When the mode selection switch 110 is in the working mode, the circuit where the mode selection switch 110 and the rotation control solenoid valve 112 are located is energized, and the rotation control solenoid valve 112 is energized at this time, while the main control solenoid valve 106 and the clamping control solenoid valve 118, Change lever control solenoid valve 116 etc. to be energized correspondingly when the electromagnet of dodge door relay 108 is energized, so that the rotary motor 101 and the propulsion motor 102 can operate normally with the working condition under the operation of the driver.

During maintenance, the mode selection switch 110 is in the limited mode, at this time, the circuit where the mode selection switch 110 and the rotation control solenoid valve 112 are located is powered off, and the rotation control solenoid valve 112 is powered off. The circuit where the electromagnet of the main control relay and the mode selection switch 110 are located together is de-energized, and the clamping control solenoid valve 118 is de-energized. The electromagnet of the mode selection relay 111 is connected with the common circuit of the mode selection switch 110, the electromagnet of the mode selection relay 111 is energized, and the normally closed contact of the mode control relay is disconnected, so that it is connected with the first normally closed contact of the mode selection relay respectively. The propulsion control solenoid valve 113 connected with the contact 111a, the second normally closed contact 111b, and the third normally closed contact 111c, the rod change control solenoid valve 116, etc. are de-energized, so that the rotary motor 101, the rotary motor 101, and the propulsion motor 102 are powered off. , the rod changing mechanism 115 and the clamping mechanism 117 stop running.

8 and 9, when the operation protection switch 119 is pressed in the limited mode, the electromagnet 125 of the operation protection relay is energized, at this time, the normally open contact 126 of the operation protection relay is connected, and the main control electromagnetic The valve 106 is energized, because the rotation control solenoid valve 112 is de-energized, the rotation motor 101 cannot be started, but the propulsion motor 102 will run in a limited state under the corresponding operation of the driver in the cab.

At the same time, with reference to Figures 8 and 10, when the operation protection switch 119 is pressed in the restricted mode, the electromagnet 121 clamping the protection relay and the normally open contact 126 of the operation protection relay are energized together, The normally open contact 122 of the clamping protection relay is turned on, so that the clamping mechanism 117 can operate under the corresponding operation of the driver in the cab.

The above descriptions are only some preferred embodiments of the present disclosure and illustrations of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solution formed by the specific combination of the above-mentioned technical features, but also covers the above-mentioned invention without departing from the above-mentioned inventive concept. Other technical solutions formed by any combination of technical features or equivalent features. For example, a technical solution formed by replacing the above-mentioned features with technical features with similar functions disclosed in (but not limited to) the embodiments of the present disclosure.

Claims (10)

1. A rock drilling rig, comprising: a shield body forming a protective space for accommodating at least a part of the rock drilling rig; Drill pipe for rock drilling; a rotary motor for driving the drill rod to rotate; a propulsion motor, used to drive the drill rod to propel; It is characterized by: The rock drilling rig also includes: a movable door; Wherein, the shield body is formed with an inspection channel communicating with the protective space; the movable door is movably connected to the shield body so that the movable door has at least a first movable position relative to the shield body and a second movable position; when the movable door is in the first movable position, the maintenance passage is closed; when the movable door is in the second movable position, the maintenance passage is opened; The rock drilling rig also includes: a main control solenoid valve for controlling the operation of the rotary motor or/and propulsion motor of the rock drilling rig; A movable door sensor, used to detect whether the movable door of the rock drilling rig opens the inspection channel; A dolly door relay, configured to receive the control signal of the dodge door sensor and control whether the main control solenoid valve acts; Wherein, the movable door relay is electrically connected with the main control solenoid valve and the movable door sensor respectively so that the movable door relay receives the control signal from the movable door sensor representing that the inspection channel is open. The signal de-energizes the master solenoid to stop or slow down the rotation motor and/or the propulsion motor. 2. The rock drilling rig according to claim 1, characterized in that: The rock drilling rig also includes: A reset switch, used for user operation to reset the movable door relay to a state where the main control solenoid valve is energized; Wherein, the reset switch is electrically connected to the movable door relay. 3. The rock drilling rig according to claim 1, characterized in that: The rock drilling rig also includes: a mode selection switch for selection by the user to be in the working mode or the restricted mode; a mode selection relay, configured to receive a control signal from the mode selection switch and control the rotation motor or/and the propulsion motor to be in a working state or a restricted state; Wherein, the mode selection switch is electrically connected to the mode selection relay so that when the mode selection switch is in the working mode, the rotation motor or/and the propulsion motor are in the working state and in the working mode When the selector switch is in the limited mode, the rotation motor or/and the propulsion motor is in a restricted state; the rotational speed of the rotation motor or/and the propulsion motor in the restricted state is lower speed in working condition. 4. The rock drilling rig according to claim 3, characterized in that: The rock drilling rig also includes: a rotary control solenoid valve for controlling the operation of the rotary motor; Wherein, the rotation control solenoid valve is electrically connected to the mode selection switch so that the rotation control solenoid valve is activated when the mode selection switch is in the restricted mode. 5. The rock drilling rig according to claim 3, characterized in that: The rock drilling rig also includes: a propulsion control solenoid valve for controlling operation of said propulsion motor; Wherein, the propulsion control solenoid valve is electrically connected to the mode selection relay so that the mode selection relay activates the propulsion control solenoid valve when the mode selection switch is in the restricted mode. 6. The rock drilling rig according to claim 3, characterized in that: The rock drilling rig also includes: A rod changing mechanism, used to realize the replacement of the drill rod; A rod-changing control solenoid valve, used to control the operation of the rod-changing mechanism; Wherein, the lever change control solenoid valve is electrically connected to the mode selection relay so that the mode selection relay makes the lever change control solenoid valve act to stop when the mode selection switch is in the limited mode. The operation of the rod changing mechanism. 7. The rock drilling rig according to claim 3, characterized in that: The rock drilling rig also includes: an operation protection switch for being operated by a user to unlock the restricted mode; An operation protection relay is used to control the action of the main control solenoid valve; Wherein, the operation protection relay is respectively electrically connected with the main control solenoid valve and the operation protection switch so that when the operation protection switch is triggered, the operation protection relay makes the main control solenoid valve act to restore Operation of the propulsion motor of the rock drilling rig. 8. The rock drilling rig according to claim 7, characterized in that: The rock drilling rig also includes: a clamping mechanism for clamping the drill rod; A clamping control solenoid valve, used to control the operation of the clamping mechanism; Wherein, the clamping control solenoid valve is electrically connected to the mode selection relay so that the mode selection relay can activate the clamping control solenoid valve to stop when the mode selection switch is in the limited mode. Operation of the clamping mechanism. 9. The rock drilling rig according to claim 8, characterized in that: The rock drilling rig also includes: A clamping protection relay, used to control the action of the clamping control solenoid valve; Wherein, the clamping protection relay is electrically connected to the clamping control solenoid valve and the operation protection relay respectively so that when the operation protection relay operates, the clamping protection relay makes the clamping control solenoid valve action thereby resuming the operation of the clamping mechanism. 10. A protection system for a rock drilling rig, characterized in that: The protection system includes: The shield body is formed with a protective space for accommodating at least a part of the rock drilling rig and an inspection channel communicating with the protective space; trap door; Wherein, the movable door is movably connected to the shield body so that the movable door has at least a first movable position and a second movable position relative to the shield body; when the movable door is in the first movable position closing the inspection passage; opening the inspection passage when the movable door is in the second active position; The protection system also includes: a main control solenoid valve for controlling the operation of the rotary motor or/and propulsion motor of the rock drilling rig; A dodge door sensor, used to detect whether the dodge door of the rock drilling rig opens the detection channel; A dolly door relay, configured to receive the control signal of the dodge door sensor and control whether the main control solenoid valve acts; Wherein, the movable door relay is electrically connected with the main control solenoid valve and the movable door sensor respectively so that the movable door relay receives the control signal from the movable door sensor representing that the inspection channel is open. The signal de-energizes the master solenoid valve to stop or slow down the rock drilling rig's rotary motor and/or propulsion motor.

Images