CN223105339U - Switching control valves and agricultural machinery - Google Patents

Abstract

The utility model relates to the field of agricultural machinery and discloses a switching control valve bank and the agricultural machinery, wherein the switching control valve bank comprises a two-position six-way valve, a first hydraulic lock and a second hydraulic lock, the two-position six-way valve is provided with an oil inlet, an oil return port, a first working oil port, a second working oil port, a third working oil port and a fourth working oil port, when the switching control valve bank is positioned at a first valve position, the oil inlet is communicated with the first working oil port, the oil return port is communicated with the second working oil port, the second valve position, the oil inlet is communicated with the third working oil port, the oil return port is communicated with the fourth working oil port, the first hydraulic lock is directly communicated with the first working oil port and the second working oil port, and the second hydraulic lock is directly communicated with the third working oil port and the fourth working oil port. The switching control valve group can make the change of the hydraulic system smaller when the agricultural machinery needs a new execution mechanism, the installation process is simple and flexible, and the installation cost is effectively reduced.

Description

Switching control valve group and agricultural machine

Technical Field

The utility model belongs to the field of switching control valve groups, and particularly relates to a switching control valve group and agricultural machinery.

Background

Currently, agricultural machines may be configured with a plurality of different actuators to accommodate different job requirements. In the prior art, when an actuating mechanism is additionally arranged on an agricultural machine, the existing hydraulic system is required to be changed, the main changing modes are newly increased multi-way valve connection number or newly increased two-position four-way valve and the like, more hydraulic pipelines are required to be newly increased, the arrangement of the hydraulic pipelines of the hydraulic system is redesigned, the changing is large, the installation process is complex, and the installation cost is high.

Disclosure of utility model

Aiming at the defects or the defects in the prior art, the utility model provides a switching control valve group and an agricultural machine, and aims to solve the technical problems of great improvement on a hydraulic system, complex installation process and high installation cost when an executing mechanism is additionally arranged on the agricultural machine.

To achieve the above object, the present utility model provides a switching control valve group including:

The two-position six-way valve is provided with an oil inlet, an oil return port, a first working oil port, a second working oil port, a third working oil port and a fourth working oil port, when the valve is in a first valve position, the oil inlet is communicated with the first working oil port, the oil return port is communicated with the second working oil port, when the valve is in a second valve position, the oil inlet is communicated with the third working oil port, and the oil return port is communicated with the fourth working oil port;

The first hydraulic lock is arranged on the valve body of the two-position six-way valve and is provided with a first oil inlet channel and a first oil outlet channel, the oil inlet end of the first oil inlet channel is directly communicated with the first working oil port, and the oil outlet end of the first oil outlet channel is directly communicated with the second working oil port;

the second hydraulic lock is arranged on the valve body of the two-position six-way valve and is provided with a second oil inlet channel and a second oil outlet channel, the oil inlet end of the second oil inlet channel is directly communicated with the third working oil port, and the oil outlet end of the second oil outlet channel is directly communicated with the fourth working oil port.

Optionally, the first hydraulic lock is a unidirectional hydraulic lock, when the first oil inlet channel is used for oil inlet, the first oil outlet channel is conducted, and when the first oil inlet channel is stopped for oil inlet, the first oil outlet channel is cut off;

The second hydraulic lock is a one-way hydraulic lock, when the second oil inlet channel is used for oil inlet, the second oil outlet channel is communicated, and when the second oil inlet channel is stopped for oil inlet, the second oil outlet channel is stopped.

Optionally, the first hydraulic lock and the second hydraulic lock are both single-pilot operated check valves.

Optionally, the first hydraulic lock is a bidirectional hydraulic lock, when the first oil inlet channel is used for oil inlet, the first oil outlet channel is communicated, and when the first oil inlet channel is stopped for oil inlet, the first oil inlet channel and the first oil outlet channel are both blocked;

The second hydraulic lock is a one-way hydraulic lock, when the second oil inlet channel is used for oil inlet, the second oil outlet channel is communicated, and when the second oil inlet channel is stopped for oil inlet, the second oil inlet channel and the second oil outlet channel are both cut off.

Optionally, the first hydraulic lock is a double-pilot check valve.

Optionally, the valve body of the two-position six-way valve has a first side and a second side opposite to each other, the first working oil port and the second working oil port are both arranged on the first side, the third working oil port and the fourth working oil port are both arranged on the second side, the first hydraulic lock is arranged on the first side, and the second hydraulic lock is arranged on the second side.

Optionally, a sealing ring is respectively arranged at the connection part of the first hydraulic lock and the valve body of the two-position six-way valve and at the connection part of the second hydraulic lock and the valve body of the two-position six-way valve.

Optionally, the switching control valve group is of an integral casting structure.

Optionally, the two-position six-way valve is an electromagnetic valve, and is switched to the first valve position when power is obtained and is switched to the second valve position when power is lost.

The utility model also provides an agricultural machine comprising the switching control valve group.

Through the technical scheme, the switching control valve bank can be applied to a hydraulic system of an agricultural machine, the oil inlet and the oil return port of the two-position six-way valve are respectively connected with a hydraulic oil source of the hydraulic system, the first hydraulic lock is connected with the original executing mechanism, when the agricultural machine needs to be newly increased, the newly increased executing mechanism can be connected with the second hydraulic lock to connect the newly increased executing mechanism with the hydraulic system of the agricultural machine, and the switching control valve bank is arranged in such a way that more hydraulic pipelines are not needed to be newly increased and the hydraulic pipeline arrangement of the hydraulic system is not needed to be redesigned, the change of the hydraulic system is small, the installation process is simple, convenient and flexible, and the installation cost is effectively reduced. In addition, the switching control valve group is integrated by two-position six-way valve, first hydraulic lock and second hydraulic lock, and overall structure is compact and small and exquisite and the commonality is strong to, first hydraulic lock and second hydraulic lock have the characteristic that can lock non return way hydraulic oil, make the switching control valve group applicable in the condition that actuating mechanism needs pressurize operation.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the description serve to explain, without limitation, the utility model. In the drawings:

FIG. 1 is a schematic diagram of a switching control valve set according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of the switch control valve block of FIG. 1;

Fig. 3 is a schematic diagram of the switching control valve set in fig. 1.

Reference numerals illustrate:

1. two-position six-way valve

2. First hydraulic lock

21. First oil inlet passage 22 first oil outlet passage

3. Second hydraulic lock

31. Second oil feed passage 32 second oil discharge passage

B oil inlet A oil return port

B1 A first working oil port A1 and a second working oil port

B2 Third working oil port A2 and fourth working oil port

Detailed Description

Specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the present utility model.

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the present utility model, unless otherwise indicated, directional terms such as "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are generally based on the directional terms as shown in the drawings and are merely for convenience of describing the embodiments of the present utility model and to simplify the description, and do not denote or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model, and the directional terms "inner and outer" refer to the inside and outside with respect to the outline of the respective components themselves.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

The utility model firstly provides a switching control valve group.

In one embodiment, referring to fig. 1 to 3, the switching control valve group includes:

The two-position six-way valve 1 is provided with an oil inlet B, an oil return port A, a first working oil port B1, a second working oil port A1, a third working oil port B2 and a fourth working oil port A2, when the valve is positioned at a first valve position, the oil inlet B is communicated with the first working oil port B1, the oil return port A is communicated with the second working oil port A1, when the valve is positioned at a second valve position, the oil inlet B is communicated with the third working oil port B2, and the oil return port A is communicated with the fourth working oil port A2;

The first hydraulic lock 2 is arranged on the valve body of the two-position six-way valve 1 and is provided with a first oil inlet channel 21 and a first oil outlet channel 22, the oil inlet end of the first oil inlet channel 21 is directly communicated with the first working oil port B1, and the oil outlet end of the first oil outlet channel 22 is directly communicated with the second working oil port A1;

The second hydraulic lock 3 is arranged on the valve body of the two-position six-way valve 1 and is provided with a second oil inlet channel 31 and a second oil outlet channel 32, the oil inlet end of the second oil inlet channel 31 is directly communicated with the third working oil port B2, and the oil outlet end of the second oil outlet channel 32 is directly communicated with the fourth working oil port A2.

The switching control valve group of the embodiment can be applied to a hydraulic system of an agricultural machine, an oil inlet B and an oil return port A of a two-position six-way valve 1 are respectively connected with a hydraulic oil source of the hydraulic system, a first hydraulic lock 2 is connected with an original executing mechanism, particularly an oil outlet end of a first oil inlet channel 21 and an oil inlet end of a first oil outlet channel 22, when the agricultural machine needs to be newly added with the executing mechanism, the newly added executing mechanism is connected with a second hydraulic lock 3, particularly the newly added executing mechanism is connected with the oil outlet end of a second oil inlet channel 31 and the oil inlet end of a second oil outlet channel 32, so that the newly added executing mechanism is connected with the hydraulic system of the agricultural machine, the hydraulic system is not required to be newly added with more hydraulic pipelines and the hydraulic pipeline arrangement of the hydraulic system is redesigned, the change of the hydraulic system is small, the installation process is simple, convenient and flexible, and the installation cost is effectively reduced. In addition, the switching control valve group is integrated by the two-position six-way valve 1, the first hydraulic lock 2 and the second hydraulic lock 3, the whole structure is compact and small, the universality is strong, and the first hydraulic lock 2 and the second hydraulic lock 3 have the characteristic of being capable of locking the hydraulic oil in the non-return way, so that the switching control valve group can be suitable for the condition that the executing mechanism needs pressure maintaining operation, for example, the piston rod of the hydraulic oil cylinder can be kept at a preset extending position through the locking action of the first hydraulic lock 2 and the second hydraulic lock 3.

In one embodiment, the first hydraulic lock 2 is a one-way hydraulic lock, when the first oil inlet passage 21 is in oil, the first oil outlet passage 22 is turned on, and when the first oil inlet passage 21 is out of oil, the first oil outlet passage 22 is turned off;

The second hydraulic lock 3 is a one-way hydraulic lock, and when the second oil inlet passage 31 is in oil, the second oil outlet passage 32 is turned on, and when the second oil inlet passage 31 stops in oil, the second oil outlet passage 32 is turned off.

It can be appreciated that the switching control valve set of the present embodiment is applicable to an actuator that needs to lock the hydraulic oil output side during operation.

In one embodiment, referring to fig. 2 and 3, the first hydraulic lock 2 and the second hydraulic lock 3 are each single pilot operated check valves. The structure and working principle of the single pilot operated check valve are well known to those skilled in the art, and thus are not described in detail herein.

In one embodiment, the first hydraulic lock 2 is a two-way hydraulic lock, when the first oil inlet passage 21 is in oil, the first oil outlet passage 22 is in conduction, and when the first oil inlet passage 21 stops in oil, the first oil inlet passage 21 and the first oil outlet passage 22 are both in cut-off;

The second hydraulic lock 3 is a one-way hydraulic lock, and when the second oil inlet channel 31 is in oil inlet, the second oil outlet channel 32 is in conduction, and when the second oil inlet channel 31 stops in oil inlet, both the second oil inlet channel 31 and the second oil outlet channel 32 are in cut-off.

It can be appreciated that the switching control valve set of the present embodiment is applicable to an actuator that needs to lock the hydraulic oil input side and the hydraulic oil output side during operation.

In one embodiment, the first hydraulic lock 2 is a double pilot operated check valve. The structure and working principle of the double pilot operated check valve are well known to those skilled in the art, and thus are not described in detail herein.

In one embodiment, referring to fig. 1 and 2, the valve body of the two-position six-way valve 1 has opposite first and second sides, the first and second working ports B1 and A1 are each disposed on the first side, the third and fourth working ports B2 and A2 are each disposed on the second side, the first hydraulic lock 2 is disposed on the first side, and the second hydraulic lock 3 is disposed on the second side. The arrangement is such that the first hydraulic lock 2 and the second hydraulic lock 3 are spaced apart by a larger space, avoiding mutual interference of the pipelines respectively connected with the actuating mechanism.

Of course, in other embodiments, the arrangement of the first working oil port B1, the second working oil port A1, the third working oil port B2 and the fourth working oil port A2 is not limited thereto, and may be designed according to practical requirements.

In one embodiment, referring to fig. 2, sealing rings are respectively arranged at the connection part of the first hydraulic lock 2 and the valve body of the two-position six-way valve 1 and at the connection part of the second hydraulic lock 3 and the valve body of the two-position six-way valve 1. By the arrangement, the hydraulic oil tightness of the switching control valve group is effectively improved, and the oil drainage phenomenon is avoided.

In one embodiment, the switch control valve block is of an integral casting structure, and the switch control valve block is formed in a casting mode, so that compared with a conventional plate valve block, the switch control valve block is smaller in size and lower in manufacturing cost.

Of course, in other embodiments, the switching control valve block may also be formed by machining.

In one embodiment, referring to fig. 2 and 3, the two-position six-way valve 1 is a solenoid valve, and is switched to a first valve position when power is supplied and to a second valve position when power is lost. In the practical application, an operator can control the two-position six-way valve 1 to switch between the first valve position and the second valve position through the controller, so that the agricultural machinery is controlled to switch connection between the original executing mechanism and the newly-added executing mechanism.

The utility model also provides an agricultural machine comprising the switching control valve group. Obviously, the agricultural machine also has the beneficial effects of the switching control valve group.

In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, or communicable with each other, directly connected, indirectly connected through an intervening medium, or in communication between two elements or in an interactive relationship between two elements, unless otherwise explicitly specified. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. A switching control valve block, characterized in that the switching control valve block comprises:

The two-position six-way valve (1) is provided with an oil inlet (B), an oil return port (A), a first working oil port (B1), a second working oil port (A1), a third working oil port (B2) and a fourth working oil port (A2), when the valve is in a first valve position, the oil inlet (B) is communicated with the first working oil port (B1), the oil return port (A) is communicated with the second working oil port (A1), when the valve is in a second valve position, the oil inlet (B) is communicated with the third working oil port (B2), and the oil return port (A) is communicated with the fourth working oil port (A2);

The first hydraulic lock (2) is arranged on the valve body of the two-position six-way valve (1) and is provided with a first oil inlet channel (21) and a first oil outlet channel (22), the oil inlet end of the first oil inlet channel (21) is directly communicated with the first working oil port (B1), and the oil outlet end of the first oil outlet channel (22) is directly communicated with the second working oil port (A1);

The second hydraulic lock (3) is arranged on the valve body of the two-position six-way valve (1) and is provided with a second oil inlet channel (31) and a second oil outlet channel (32), the oil inlet end of the second oil inlet channel (31) is directly communicated with the third working oil port (B2), and the oil outlet end of the second oil outlet channel (32) is directly communicated with the fourth working oil port (A2).

2. The switching control valve group according to claim 1, characterized in that the first hydraulic lock (2) is a unidirectional hydraulic lock, when the first oil inlet channel (21) is in oil, the first oil outlet channel (22) is in conduction, when the first oil inlet channel (21) is out of oil, the first oil outlet channel (22) is out of conduction;

The second hydraulic lock (3) is a one-way hydraulic lock, when the second oil inlet channel (31) is used for oil inlet, the second oil outlet channel (32) is communicated, and when the second oil inlet channel (31) is stopped from oil inlet, the second oil outlet channel (32) is stopped.

3. The switching control valve group according to claim 2, characterized in that the first hydraulic lock (2) and the second hydraulic lock (3) are both single pilot operated check valves.

4. The switching control valve group according to claim 1, characterized in that the first hydraulic lock (2) is a two-way hydraulic lock, the first oil outlet channel (22) is turned on when the first oil inlet channel (21) is in oil, and both the first oil inlet channel (21) and the first oil outlet channel (22) are turned off when the first oil inlet channel (21) is out of oil;

the second hydraulic lock (3) is a one-way hydraulic lock, when the second oil inlet channel (31) is used for oil inlet, the second oil outlet channel (32) is communicated, and when the second oil inlet channel (31) is used for oil inlet stopping, the second oil inlet channel (31) and the second oil outlet channel (32) are both cut off.

5. The switching control valve group according to claim 4, characterized in that the first hydraulic lock (2) is a double pilot operated check valve.

6. The switching control valve group according to claim 1, characterized in that the valve body of the two-position six-way valve (1) has a first side face and a second side face which are opposite, the first working oil port (B1) and the second working oil port (A1) are respectively arranged on the first side face, the third working oil port (B2) and the fourth working oil port (A2) are respectively arranged on the second side face, the first hydraulic lock (2) is arranged on the first side face, and the second hydraulic lock (3) is arranged on the second side face.

7. The switching control valve group according to claim 6, wherein sealing rings are respectively arranged at the connection part of the first hydraulic lock (2) and the valve body of the two-position six-way valve (1) and at the connection part of the second hydraulic lock (3) and the valve body of the two-position six-way valve (1).

8. The switch control valve set of claim 1, wherein the switch control valve set is of unitary cast construction.

9. The switching control valve group according to claim 1, wherein the two-position six-way valve (1) is a solenoid valve, and is switched to the first valve position when power is supplied and to the second valve position when power is lost.

10. An agricultural machine, characterized in that it comprises a switching control valve group according to any one of claims 1 to 9.