CN114688128B - Emergency pumping control package, hydraulic system and pumping equipment - Google Patents
Emergency pumping control package, hydraulic system and pumping equipment Download PDFInfo
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- CN114688128B CN114688128B CN202011623659.4A CN202011623659A CN114688128B CN 114688128 B CN114688128 B CN 114688128B CN 202011623659 A CN202011623659 A CN 202011623659A CN 114688128 B CN114688128 B CN 114688128B
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- 238000005086 pumping Methods 0.000 title claims abstract description 86
- 238000004891 communication Methods 0.000 claims abstract description 40
- 239000002699 waste material Substances 0.000 abstract description 7
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 239000000446 fuel Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 112
- 238000003756 stirring Methods 0.000 description 13
- 239000010720 hydraulic oil Substances 0.000 description 10
- 230000000875 corresponding effect Effects 0.000 description 9
- 230000009471 action Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
- F15B21/087—Control strategy, e.g. with block diagram
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/20—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors controlling several interacting or sequentially-operating members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/10—Special arrangements for operating the actuated device with or without using fluid pressure, e.g. for emergency use
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention provides an emergency pumping control package, a hydraulic system and pumping equipment, wherein the emergency pumping control package comprises an emergency operation module and a power interface module, the emergency operation module is used for receiving an operation instruction of starting control of at least one of forward/reverse pumping of the pumping system and left/right swinging of a distribution valve by a user, the emergency communication interface is electrically connected with the emergency operation module and is electrically connected with a control valve group on a fuel circuit of the hydraulic system. The invention can realize the emergency control of the hydraulic system through the emergency pumping control package, can ensure that the concrete pump truck can still continue to operate under the condition that the main control system fails, and effectively prevents the waste of concrete and the environmental pollution caused by the waste.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to an emergency pumping control bag, a hydraulic system and pumping equipment.
Background
The concrete pump truck is construction equipment for realizing concrete conveying through a pumping mechanism, and a hydraulic system of the concrete pump truck generally comprises four independent systems, namely a pumping hydraulic system, an arm support hydraulic system, a distributing valve hydraulic system and a stirring hydraulic system. The hydraulic system comprises a pumping hydraulic system, an arm support hydraulic system and a distributing valve hydraulic system, wherein reversing valves are arranged on oil ways of the pumping hydraulic system, the arm support hydraulic system and the distributing valve hydraulic system, so that positive/negative pumping of a concrete pump truck, telescopic action of the arm support, swinging reversing of the distributing valve and the like are realized through corresponding hydraulic executing components respectively.
At present, when the electric control of a hydraulic system fails or even fails completely in the operation process of the concrete pump truck, normal pumping, arm support operation and other actions cannot be performed through the hydraulic system on the concrete pump truck, namely, the concrete pump truck cannot normally perform operation, so that concrete is solidified in a conveying cylinder, a conveying pipe and a hopper, waste of the concrete is caused, and the environment is polluted.
Disclosure of Invention
The invention provides an emergency pumping control packet, a hydraulic system and pumping equipment, which are used for solving the problem that the existing concrete pump truck cannot normally operate when the electrical control of the hydraulic system of the existing concrete pump truck fails.
The invention provides an emergency pumping control package, which comprises an emergency operation module and an emergency communication interface; the emergency operation module is used for receiving an operation instruction of a user for starting control of at least one of positive/negative pumping of the pumping system and left/right swinging of the distribution valve; the emergency communication interface is electrically connected with the emergency operation module, the emergency communication interface is used for being electrically connected with a control valve group on an oil path of the hydraulic system, the control valve group can respond to the operation instruction to control the conduction state of the hydraulic system, and the hydraulic system is used for driving the pumping system and the distribution valve.
According to the emergency pumping control package provided by the invention, the signal outgoing lines of the control valves on the control valve group are connected with the wire harness interface in a centralized manner, and the wire harness interface and the emergency communication interface are connected in a communication manner.
According to the emergency pumping control package provided by the invention, the wire harness interface comprises a plurality of pins, and the emergency operation module is connected with part of the pins of the wire harness interface through the emergency communication interface.
According to the emergency pumping control package provided by the invention, the emergency operation module comprises four electric control buttons, namely a first button, a second button, a third button and a fourth button, wherein the first button and the second button are respectively used for controlling positive/negative pumping of the pumping system, and the third button and the fourth button are respectively used for controlling left/right swinging of the distribution valve.
According to the emergency pumping control package provided by the invention, the emergency communication interface comprises a plurality of conductive pins and grounding pins, and the first button, the second button, the third button and the fourth button are used for enabling at least part of the conductive pins and the grounding pins to form an electrified loop; or, the emergency communication interface comprises a plurality of conductive pins and grounding pins, and the first button, the second button, the third button and the fourth button are used for enabling at least part of the conductive pins to be electrically connected with the positive electrode of the external power supply and enabling the grounding pins to be electrically connected with the negative electrode of the external power supply.
According to the invention, an emergency pumping control packet is provided, and the control packet further comprises: the power interface module is electrically connected with the emergency operation module and is used for being connected with an external power supply.
The invention also provides a hydraulic system which comprises a control valve group, a system control circuit and the emergency pumping control package; and the system control circuit is used for being electrically connected with the control valve group on the oil way of the hydraulic system. According to the hydraulic system provided by the invention, the control valve group comprises a first pilot valve; the hydraulic system comprises a pumping switching oil way for connecting a main oil cylinder of the pumping system, a first reversing valve is arranged on the pumping switching oil way, two pilot control ends on the first reversing valve are respectively communicated with the first pilot valves in a one-to-one correspondence manner, and the first pilot valves control the switching of the oil way on the first reversing valve.
According to the hydraulic system provided by the invention, the control valve group comprises a first overflow valve, and the first overflow valve is arranged at the oil inlet end of the pumping switching oil way; the control valve group comprises a first control valve; the first reversing valves comprise two oil inlet ends of the first reversing valves are communicated, oil return ends of the first reversing valves are communicated, and the first control valves are connected in series between two oil outlet ends of the first reversing valves.
According to the hydraulic system provided by the invention, the control valve group comprises a second type pilot valve; the hydraulic system comprises a distribution valve switching oil way for connecting the swing valve oil cylinder, a second reversing valve is arranged on the distribution valve switching oil way, two pilot control ends on the second reversing valve are respectively communicated with the second pilot valves in a one-to-one correspondence manner, and the second pilot valves control the switching of the oil way on the second reversing valve.
According to the hydraulic system provided by the invention, the control valve group comprises a second overflow valve, and the second overflow valve is arranged at the oil inlet end of the distribution valve switching oil way; and a hydraulic accumulator is also arranged on the oil path between the second reversing valve and the oil inlet end of the distribution valve switching oil path.
According to the hydraulic system provided by the invention, the control valve group comprises a third type of pilot valve; the hydraulic system comprises a stirring hydraulic oil way, and the third pilot valve is installed on the stirring hydraulic oil way.
The invention also provides a pumping device provided with the hydraulic system.
According to the emergency pumping control package, the hydraulic system and the pumping equipment, the emergency operation module and the emergency communication interface which are in communication connection are arranged, so that the emergency communication interface is conveniently and directly connected with the control valve group on the oil path of the hydraulic system, when the electric control of the hydraulic system on the concrete pump truck fails, an operator can directly input a control instruction to the emergency operation module, and control operation on at least one of the forward/reverse pumping and the left/right swinging of the distribution valve of the pumping system is started, so that the conduction state of the oil path on the hydraulic system is controlled through the corresponding control valve group, the hydraulic execution part communicated with the hydraulic system can complete corresponding action, the concrete pump truck can still continue to operate under the condition that the main control system fails, and the concrete waste and the environmental pollution caused by the concrete waste can be effectively prevented.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of an emergency pumping control packet connected to a hydraulic system according to the present invention;
FIG. 2 is a schematic diagram of a hydraulic system according to the present invention;
FIG. 3 is a schematic diagram of a main valve island integrated by a pumping switching oil circuit;
fig. 4 is a schematic structural diagram of an auxiliary valve island integrated by a distributing valve switching oil circuit and a stirring hydraulic oil circuit;
reference numerals:
1: a control package; 11: an emergency operation module; 12: a power interface module;
2: a control valve group; 3: a hydraulic system; 31: pumping switching oil way;
32: switching oil paths of the distribution valve; 33: stirring hydraulic oil way; 4: an emergency communication interface;
5: and a harness interface.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The emergency pumping control pack, hydraulic system and pumping device of the present invention are described below in connection with fig. 1-4.
As shown in fig. 1, the present embodiment provides an emergency pumping control packet, and the control packet 1 includes: the emergency operation module 11 is connected with the emergency communication interface 4; the emergency operation module 11 is used for receiving an operation instruction of a user for starting control of at least one of positive/negative pumping of the pumping system and left/right swinging of the distribution valve; the emergency communication interface 4 is electrically connected with the emergency operation module 11, the emergency communication interface 4 is used for being electrically connected with the control valve group 2 on the oil path of the hydraulic system, the control valve group 2 can respond to the operation instruction to control the conduction state of the hydraulic system 3, and the hydraulic system 3 is used for driving the pumping system and the distributing valve.
Specifically, in this embodiment, by setting the emergency operation module 11 and the emergency communication interface 4 that are in communication connection, the emergency communication interface 4 is conveniently and directly connected with the control valve group 2 on the oil path of the hydraulic system 3, when the electrical control of the hydraulic system 3 on the concrete pump truck fails, an operator can directly input a control command to the emergency operation module 11, and start the control operation of at least one of the forward/reverse pumping of the pumping system and the left/right swinging of the distribution valve, so as to control the on state of the oil path on the hydraulic system 3 through the corresponding control valve group 2, so that the hydraulic execution component communicated with the hydraulic system 3 can complete corresponding actions, ensure that the concrete pump truck can still continue working under the condition that the main control system fails, and effectively prevent the waste of concrete and the environmental pollution caused by the waste.
Further, in order to facilitate the communication connection between the emergency communication interface 4 and the control valve group 2 on the oil circuit of the hydraulic system 3, in this embodiment, the signal outgoing lines of the control valves on the control valve group 2 are centrally connected with the wire harness interface 5, and the wire harness interface 5 and the emergency communication interface 4 are in communication connection in a plugging manner. One of the harness interface 5 and the emergency communication interface 4 is of a male structure, the other is of a female structure, and the male structure and the female structure are correspondingly inserted into a whole.
Specifically, the harness interface 5 shown in the present embodiment includes a plurality of pins, and the emergency operation module 11 is connected to part of the pins of the harness interface 5 through the emergency communication interface 4.
Further, the emergency operation module 11 in this embodiment includes any one of an electrically controlled operation handle, an electrically controlled button, and a touch screen controller.
Specifically, in this embodiment, an electric control operation handle or an electric control button corresponding to each valve in the control valve group 2 is provided, so as to individually control the open/close states of each valve in the control valve group 2. In this embodiment, a configuration interface may be provided on the touch screen controller, so that an operator can input a control command manually in a targeted manner to control the opening and closing states of the valves in the control valve group 2.
Further, the emergency operation module 11 shown in this embodiment is specifically configured as an electric control button, where the electric control button includes four buttons, that is, a first button, a second button, a third button, and a fourth button, where the first button and the second button are respectively used to control the forward/reverse pumping of the pumping system, and the third button and the fourth button are respectively used to control the left/right swing of the distributing valve.
Further, the emergency communication interface 4 in this embodiment includes a plurality of conductive pins and a ground pin, and the first button, the second button, the third button, and the fourth button are used to make at least part of the conductive pins and the ground pin form an electrical loop; or, the emergency communication interface comprises a plurality of conductive pins and grounding pins, and the first button, the second button, the third button and the fourth button are used for enabling at least part of the conductive pins to be electrically connected with the positive electrode of the external power supply and are used for enabling the grounding pins to be electrically connected with the negative electrode of the external power supply.
Therefore, the embodiment can directly control the conductive connection state between the corresponding conductive pin and the grounding pin on the emergency communication interface 4 by operating each electric control button so as to control the power-on state of the coil of each valve in the control valve group 2, namely, control the conduction state of each valve in the control valve group 2.
Further, the control packet 1 shown in this embodiment is further provided with a power interface module 12, where the power interface module 12 is electrically connected to the emergency operation module 11, and the power interface module 12 is used for connecting to an external power supply.
Specifically, the power interface module 12 shown in this embodiment may be an ac-dc conversion module or a dc conversion module, which is well known in the art, and the power interface module 12 may be directly connected to a dc emergency power source, for example, the power interface module 12 may be directly connected to a battery on a chassis of a working machine, and in case of failure of the battery, the power interface module 12 may also be connected to a battery on a chassis of another working machine. At the same time, the power interface module 12 can also be connected to a mains supply on site.
As shown in fig. 1 and 2, the present embodiment further provides a hydraulic system, where the hydraulic system 3 includes a control valve group 2, a system control circuit, and an emergency pumping control packet as described above; the system control circuit is used for being electrically connected with the control valve group 2 on the oil circuit of the hydraulic system 3.
Therefore, under the condition that the hydraulic system of the pumping equipment normally operates, the system control circuit controls the opening and closing actions of the control valve group 2 on the oil circuit of the hydraulic system 3, and when the system control circuit fails or the power supply of the system control circuit fails, the emergency communication interface 4 on the emergency pumping control bag can be connected with the control valve group 2, and an operator can realize emergency control on the control valve group 2 by operating the emergency operation module 11 so that the hydraulic system 3 can normally operate.
Preferably, the control valve group 2 shown in this embodiment comprises a first type of pilot valve; the hydraulic system 3 comprises a pumping switching oil way 31 for connecting a main oil cylinder of the pumping system, a first reversing valve is arranged on the pumping switching oil way 31, two pilot control ends on the first reversing valve are respectively communicated with a first pilot valve in one-to-one correspondence, and the switching of the oil way on the first reversing valve is controlled by the first pilot valve.
As shown in fig. 2 and 3, the pumping switching oil path 31 shown in the present embodiment is provided with an oil inlet P1, an oil return port T1, and oil outlets A1, B1 and A2, B2. The oil inlet P1 shown in the embodiment is used for being communicated with a pumping output side of a main oil pump, the oil outlets A1 and B1 are respectively used for being communicated with two rodless cavities on a main oil cylinder of a pumping system, and the oil outlets A2 and B2 are used for being communicated with two rod cavities on the main oil cylinder. The two rodless cavities on the main oil cylinder can be controlled to be turned on and off by the first control valve, or the two rodless cavities on the main oil cylinder can be controlled to be turned on and off by the first control valve.
Here, two first reversing valves shown in this embodiment are provided, where two first reversing valves are respectively identified as QJ1 and QJ2 in fig. 2, oil inlet ends of the first reversing valves QJ1 and QJ2 are all communicated with an oil inlet P1 on the main valve island, oil return ends of the first reversing valves QJ1 and QJ2 are all communicated with an oil return port T1 on the main valve island, two oil outlet ends of the first reversing valve QJ1 are respectively correspondingly communicated with oil outlets A1 and B1 on the main valve island, and two oil outlet ends of the first reversing valve QJ2 are respectively correspondingly communicated with oil outlets A2 and B2 on the main valve island. Thus, in normal operation of the electrical control of the hydraulic system 3, the control of the working state of the master cylinder of the pumping system can be achieved based on the control of the switching states of the two first reversing valve oil passages.
However, in order to ensure that the master cylinder of the pumping system can work normally when the electrical control of the hydraulic system 3 fails or fails, the two pilot control ends on each first reversing valve are respectively communicated with the first pilot valve in a one-to-one correspondence manner. An operator can input an operation command through the emergency operation module 11, and realizes switching control of an oil way on the first reversing valve by controlling the switching state of the first pilot valve.
As shown in fig. 2, two pilot control ends of the first reversing valve QJ1 are respectively connected to the first pilot valve DT7 and the first pilot valve DT6. The oil ports A on the first pilot valve DT7 and the first pilot valve DT6 are respectively communicated with two pilot control ends of the first reversing valve QJ1, the oil ports P on the first pilot valve DT7 and the first pilot valve DT6 are respectively communicated with the oil ports P2 on the auxiliary valve island, and the oil ports T7 and the oil ports T6 on the first pilot valve DT7 and the first pilot valve DT6 are respectively communicated with the oil return port T3 on the valve island.
Meanwhile, two pilot control ends of the first reversing valve QJ2 are respectively communicated with the first pilot valve DT8 and the first pilot valve DT9. Here, the specific communication states of the first reversing valve QJ2 with the first type pilot valve DT8 and the first type pilot valve DT9, respectively, will not be described in detail.
In addition, the pumping switching oil path 31 shown in the embodiment is further provided with a first relief valve DT1, where one end of the first relief valve DT1 is communicated with the oil inlet P1, and the other end of the first relief valve DT1 is communicated with the oil return port T2.
Preferably, the control valve group 2 shown in this embodiment comprises a second type of pilot valve; the hydraulic system 3 comprises a distributing valve switching oil way 32 for connecting the swing valve oil cylinder, a second reversing valve is arranged on the distributing valve switching oil way 32, two pilot control ends on the second reversing valve are respectively communicated with the second pilot valves in a one-to-one correspondence manner, and the switching of the oil way on the second reversing valve is controlled by the second pilot valves.
As shown in fig. 2 and 4, the second pilot valves in this embodiment are respectively identified as DT4 and DT5, and the second reversing valve is identified as QJ3. The oil inlet end of the distributing valve switching oil path 32 is a P2 oil port on the auxiliary valve island, and the P2 oil port is used for communicating with the pumping output side of the gear pump. The P2 oil port is communicated with the P oil port of the second reversing valve QJ3 through a one-way valve, the T oil port of the second reversing valve QJ3 is communicated with an oil return port T4 on the auxiliary valve island, two oil outlets of the second reversing valve QJ3 are respectively communicated with the A3 oil port and the B3 oil port on the auxiliary valve island, and the distribution valve can be communicated with the B3 oil port through the A3 oil port. Thus, when the electrical control of the hydraulic system 3 is operating normally, the switching control of the operating state of the distribution valve can be realized based on the control of the switching state of the oil passage of the second direction valve QJ3.
However, in order to ensure that the distribution valve can operate normally when the electrical control of the hydraulic system 3 fails or fails, the present embodiment may control the switching state of the oil passage on the second reversing valve QJ3 through the second type pilot valves DT4 and DT 5. The oil ports A on the second pilot valve DT4 and DT5 are respectively communicated with two pilot control ends on the second reversing valve QJ3, the oil ports P on the second pilot valve DT4 and DT5 are respectively communicated with the oil ports P2, and the oil ports T on the second pilot valve DT4 and DT5 are respectively communicated with the oil return port T3.
Meanwhile, the control valve group 2 shown in this embodiment includes a second relief valve DT17, where one end of the second relief valve DT17 is connected to the oil port P2, and the other end is connected to the oil return port T3 on the auxiliary valve island.
In order to facilitate effective control of the action of the distribution valve, the hydraulic accumulator PL is further provided in the oil passage between the second direction valve QJ3 and the oil inlet end of the distribution valve switching oil passage 32 in the present embodiment. The hydraulic accumulator PL may be provided in particular in an oil passage between the check valve and the second direction valve QJ3 in the distribution valve switching oil passage 32.
Further, the control valve group 2 shown in the embodiment further includes a third type of pilot valve; the hydraulic system 3 includes a stirring hydraulic oil path 33, and a third pilot valve is installed on the stirring hydraulic oil path 33.
As shown in fig. 2, the stirring hydraulic oil path 33 in this embodiment includes an oil inlet P3 and an oil return port T5 provided on the auxiliary valve island, and oil ports A4 and B4 provided on the auxiliary valve island. Wherein, hydraulic fluid port A4 and B4 are used for the intercommunication stirring pump respectively. The third type pilot valves shown in this embodiment may be respectively identified as DT10 and DT11, and hydraulic oil may be guided by the third type pilot valves DT10 and DT11 to flow from the oil inlet P3 to the oil port A4 through the third type pilot valve DT11 to be delivered to the stirring pump, and meanwhile, hydraulic oil on the stirring pump flows back to the oil return port T5 through the oil port B4 through the third type pilot valve DT 10.
Further, an emergency communication interface 4 is further arranged on the control pack 1 shown in the embodiment, the emergency communication interface 4 is in communication connection with the emergency operation module 11, a plurality of signal outgoing lines on the control valve group 2 are concentrated and connected with the wire harness interface 5, and the wire harness interface 5 is spliced with the emergency communication interface 4 so as to quickly realize communication connection between the emergency operation module 11 and the control valve group 2.
As can be seen from the above, based on the hydraulic system 3 shown in the above embodiment, in the case of failure of the control system, the control packet 1 shown in the present embodiment can be quickly inserted into the system, so as to implement the actions of forward/reverse pumping, telescopic action of the boom, swing reversing of the distributing valve, and the like of the concrete pump truck, and the operation process is as follows:
first, a signal is given to a proportional valve on a main oil pump of a main system through an emergency operation module 11, so that the main oil pump outputs driving oil according to a certain displacement.
Then, the first relief valve DT1 and the second relief valve DT17 are controlled to be respectively energized so that the system can supply the first-come control oil to the pumping switching oil passage 31, the distributing valve switching oil passage 32, and the agitating hydraulic oil passage 33, respectively.
Then, the first pilot valve DT8 and the first pilot valve DT9 corresponding to the first reversing valve QJ2 are controlled to be alternately electrified, and the second pilot valve DT4 and the second pilot valve DT5 corresponding to the second reversing valve QJ3 are controlled to be alternately electrified, so that the forward/reverse pumping control of the concrete pump truck is carried out according to actual needs.
In the process, the emergency control module can also be used for conveying control instructions to control the stirring action of the stirring pump and the telescopic action of the arm support, which are not described in detail herein.
Preferably, the present embodiment also provides a pumping device comprising a hydraulic system as described above.
The pumping equipment shown in the embodiment comprises a concrete pump truck, a vehicle-mounted pump or a drag pump and the like.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. An emergency pumping control pack, the control pack comprising:
the emergency operation module is used for receiving an operation instruction of a user for starting control of at least one of positive/negative pumping of the pumping system and left/right swinging of the distribution valve;
the emergency communication interface is electrically connected with the emergency operation module and is used for being electrically connected with a control valve group on an oil circuit of a hydraulic system, the control valve group can respond to the operation instruction to control the conduction state of the hydraulic system, and the hydraulic system is used for driving a pumping system and a distribution valve;
the control package further comprises a power interface module, wherein the power interface module is electrically connected with the emergency operation module and is used for being connected with an external power supply;
the signal outgoing lines of the control valves on the control valve group are connected with the wire harness interface in a centralized mode, and the wire harness interface is connected with the emergency communication interface in a plugging mode.
2. The emergency pumping control package of claim 1, wherein the harness interface includes a plurality of pins, the emergency operation module being coupled to a portion of the pins of the harness interface through the emergency communication interface.
3. The emergency pumping control pack of claim 1, wherein the emergency operation module comprises four electronically controlled buttons, a first button, a second button, a third button, and a fourth button, respectively, the first button and the second button being used to control the positive/negative pumping of the pumping system, respectively, and the third button and the fourth button being used to control the left/right swing of the dispensing valve, respectively.
4. The emergency pumping control pack of claim 3, wherein the emergency communication interface comprises a plurality of conductive pins and ground pins, the first button, the second button, the third button, and the fourth button being configured to cause at least a portion of the conductive pins to form an electrical circuit with the ground pins; or,
the emergency communication interface comprises a plurality of conductive pins and grounding pins, wherein the first button, the second button, the third button and the fourth button are used for enabling at least part of the conductive pins to be electrically connected with the anode of an external power supply and enabling the grounding pins to be electrically connected with the cathode of the external power supply.
5. A hydraulic system, comprising:
an emergency pumping control pack according to any one of claims 1 to 4;
a control valve group;
and the system control circuit is used for being electrically connected with the control valve group on an oil way of the hydraulic system.
6. The hydraulic system of claim 5, wherein the control valve bank includes a first type of pilot valve; the hydraulic system comprises a pumping switching oil way for connecting a main oil cylinder of the pumping system, a first reversing valve is arranged on the pumping switching oil way, two pilot control ends on the first reversing valve are respectively communicated with the first pilot valves in a one-to-one correspondence manner, and the first pilot valves control the switching of the oil way on the first reversing valve.
7. The hydraulic system of claim 5, wherein the control valve bank includes a second type of pilot valve; the hydraulic system comprises a distribution valve switching oil way for connecting a swing valve oil cylinder, a second reversing valve is arranged on the distribution valve switching oil way, two pilot control ends on the second reversing valve are respectively communicated with the second pilot valves in a one-to-one correspondence manner, and the switching of the oil way on the second reversing valve is controlled by the second pilot valves;
the control valve group comprises a second overflow valve which is arranged at the oil inlet end of the distribution valve switching oil way;
and a hydraulic accumulator is also arranged on the oil path between the second reversing valve and the oil inlet end of the distribution valve switching oil path.
8. A pumping apparatus, characterized in that it comprises a hydraulic system according to any one of claims 5 to 7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011623659.4A CN114688128B (en) | 2020-12-31 | 2020-12-31 | Emergency pumping control package, hydraulic system and pumping equipment |
| PCT/CN2021/103551 WO2022142220A1 (en) | 2020-12-31 | 2021-06-30 | Emergency pumping control packet, hydraulic system, and pumping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011623659.4A CN114688128B (en) | 2020-12-31 | 2020-12-31 | Emergency pumping control package, hydraulic system and pumping equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114688128A CN114688128A (en) | 2022-07-01 |
| CN114688128B true CN114688128B (en) | 2023-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011623659.4A Active CN114688128B (en) | 2020-12-31 | 2020-12-31 | Emergency pumping control package, hydraulic system and pumping equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114688128B (en) |
| WO (1) | WO2022142220A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115962189B (en) * | 2023-02-02 | 2025-08-22 | 山东浩铭精密工业有限公司 | Switch assembly for hydraulic transmission device and hydraulic transmission device |
| CN117948310B (en) * | 2024-03-25 | 2024-05-31 | 四平市顺邦农机制造有限公司 | Hydraulic system, hydraulic method and switching method of straw feed bundling machine |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3119722B2 (en) * | 1992-05-25 | 2000-12-25 | 株式会社小松製作所 | Hydraulic circuit of 4-position closed center switching valve by pressure proportional control valve |
| CN201381976Y (en) * | 2009-03-12 | 2010-01-13 | 张邦球 | Hydraulic control system of aggregate concrete pump |
| CN102477975B (en) * | 2010-11-22 | 2014-05-28 | 北汽福田汽车股份有限公司 | Emergency operation box, pump truck pumping control system and pump truck pumping system |
| CN202247623U (en) * | 2011-09-07 | 2012-05-30 | 中联重科股份有限公司 | Paver and emergency control device thereof |
| CN102400968B (en) * | 2011-11-18 | 2014-10-15 | 三一汽车制造有限公司 | Hydraulic valve, hydraulic system and concrete pumping equipment |
| CN202787993U (en) * | 2012-07-18 | 2013-03-13 | 山推楚天工程机械有限公司 | Emergency treatment device of concrete pump truck |
| CN102926539B (en) * | 2012-11-06 | 2016-04-06 | 三一重工股份有限公司 | Pumping machine and emergency driving system thereof |
| CN104019076B (en) * | 2014-05-27 | 2017-04-12 | 安徽星马专用汽车有限公司 | Main oil pump reversing system of closed system pump truck and closed system pump truck |
-
2020
- 2020-12-31 CN CN202011623659.4A patent/CN114688128B/en active Active
-
2021
- 2021-06-30 WO PCT/CN2021/103551 patent/WO2022142220A1/en not_active Ceased
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| Publication number | Publication date |
|---|---|
| WO2022142220A1 (en) | 2022-07-07 |
| CN114688128A (en) | 2022-07-01 |
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