Supporting wheel hydraulic control system and seeder

Abstract

The utility model relates to a supporting wheel hydraulic control system and a seeder, the hydraulic control system comprises a main control valve, a reversing valve B and two oil cylinders A, an oil outlet on the main control valve is communicated with one end of an oil supply pipeline, and an oil return port on the main control valve is communicated with one end of an oil return pipeline; the reversing valve B is fixedly installed on the oil return pipeline and provided with a first connector and a second connector which are communicated with each other or disconnected from each other, and the first connector and the second connector are communicated with the oil return pipeline; the other end of the oil supply pipeline is communicated with the rod cavity of one oil cylinder, the other end of the oil return pipeline is communicated with the rodless cavity of the other oil cylinder, and the rodless cavity of one oil cylinder is communicated with the rod cavity of the other oil cylinder. The utility model has the beneficial effects that the structure is simple, the design is reasonable, the main control valve is adopted to control the support wheel of the seeder, the remote operation is realized, the efficiency is greatly improved, the intensity of operators is greatly reduced, and the great promotion effect on the vigorous popularization of the multifunctional seeder is realized.

Description

Technical Field

[0001] This utility model relates to the field of seeder technology, specifically to a hydraulic control system for support wheels and a seeder. Background Technology

[0002] With the widespread use of seeders, the technology platform of seeders has gradually improved. Not only is there a requirement for the accuracy of seeding, but the auxiliary functions of seeding are also becoming more and more abundant, such as fans, downforce, seeding rate, marking machine, support wheels, and side folding. Utility Model Content

[0003] This invention provides a hydraulic control system for a support wheel and a seeder, aiming to solve the problems in the prior art.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0005] A hydraulic control system for a support wheel includes a main control valve, a directional valve B, and two oil cylinders A. The oil outlet of the main control valve is connected to one end of the oil supply pipeline, and the oil return port of the main control valve is connected to one end of the oil return pipeline.

[0006] The reversing valve B is fixedly installed on the return oil pipeline, and has an interface one and an interface two that are interconnected or disconnected. The interface one and the interface two are respectively connected to the return oil pipeline.

[0007] The other end of the oil supply line is connected to the rod chamber of one of the cylinders, and the other end of the oil return line is connected to the rodless chamber of another cylinder, and the rodless chamber of one cylinder is connected to the rod chamber of the other cylinder.

[0008] The beneficial effects of this utility model are: during operation, the main control valve and two directional valves B are used to control the flow of oil to provide oil for the two oil cylinders A, so as to realize the extension and retraction of the two oil cylinders A. The control is convenient and the efficiency is high.

[0009] This utility model has a simple structure and reasonable design. It uses a main control valve to control the support wheels of the seeder, realizing remote operation, which greatly improves efficiency and reduces the intensity of operation. It plays a significant role in promoting the widespread use of multi-functional seeders.

[0010] Based on the above technical solution, the present invention can be further improved as follows.

[0011] Furthermore, it also includes a reversing valve A, which is fixedly installed on the return oil line and located between one end of the return oil line and the reversing valve B; the reversing valve A is provided with an interface three and an interface four that are interconnected or disconnected, and the interface three and the interface four are respectively connected to the return oil line.

[0012] The advantages of adopting the above-mentioned further solution are that the structure is simple and the design is reasonable. The switching valve A is used to realize the on-off of the entire oil, so that the two oil cylinders A are kept in the set state.

[0013] Furthermore, the reversing valve A is a solenoid reversing valve.

[0014] The advantage of adopting the above-mentioned further solution is that it is more reasonable to use an electromagnetic directional valve for directional valve A, and it is easier to operate.

[0015] Furthermore, the reversing valve A is a two-position two-way valve.

[0016] The advantage of adopting the above-mentioned further solution is that it is more reasonable to use a two-position two-way valve for the reversing valve A, which is convenient to operate.

[0017] Furthermore, it also includes a reversing valve C and two hydraulic cylinders B, wherein the rod chamber of one of the hydraulic cylinders B is connected to the oil supply line through a pipeline one, and the rodless chamber of the other hydraulic cylinder B is connected to the return line through a pipeline two, and the rodless chamber of one of the hydraulic cylinders B is connected to the rod chamber of the other hydraulic cylinder B.

[0018] The reversing valve C is fixedly installed on the pipeline 2, and has an interface 5 and an interface 6 that are interconnected or disconnected. The interface 5 and the interface 6 are respectively connected to the pipeline 2.

[0019] The beneficial effect of adopting the above-mentioned further solution is that during the operation, the main control valve, reversing valve B and reversing valve C are used to control the oil, thereby realizing the extension and retraction of the two oil cylinders B, which is convenient to operate.

[0020] Furthermore, a hydraulic lock is fixedly installed on the first pipeline, and the control port of the hydraulic lock is connected to the second pipeline through a control pipeline.

[0021] The advantages of adopting the above-mentioned further solution are that it has a simple structure, reasonable design, uses a hydraulic lock to realize the on / off of oil return, and is easy to operate.

[0022] Furthermore, the reversing valve C is a two-position, two-way electromagnetic reversing valve.

[0023] The advantage of adopting the above-mentioned further solution is that it is more reasonable to use a two-position, two-way electromagnetic directional valve for the directional valve C, which is also convenient to operate.

[0024] Furthermore, the reversing valve B is an electromagnetic reversing valve.

[0025] The advantage of adopting the above-mentioned further solution is that it is more reasonable to use an electromagnetic directional valve for directional valve B, and it is easier to operate.

[0026] Furthermore, the reversing valve B is a two-position two-way valve.

[0027] The advantage of adopting the above-mentioned further solution is that it is more reasonable to use a two-position two-way valve for the reversing valve B, which is convenient to operate.

[0028] This utility model also relates to a seeder, including the hydraulic control system for the support wheels as described above.

[0029] The beneficial effect of adopting the above-mentioned further solutions is that this utility model also provides a seeder with a simple structure and reasonable design. It uses a main control valve to control the support wheels of the seeder, realizes remote operation, greatly improves efficiency, and at the same time greatly reduces the intensity of operation. It plays a significant role in promoting the widespread use of multi-functional seeders. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the present invention;

[0031] Figure 2 This is a schematic diagram of the hydraulic cylinder in the extended state in this utility model;

[0032] Figure 3 This is a schematic diagram of the hydraulic cylinder in the retracted state in this utility model.

[0033] Figure 4 This is a schematic diagram of the hydraulic cylinder in the locked state in this utility model.

[0034] The attached diagram lists the components represented by each number as follows:

[0035] 1. Main control valve; 2. Directional control valve A; 3. Directional control valve B; 4. Directional control valve C; 5. Hydraulic lock; 6. Cylinder A; 7. Cylinder B. Detailed Implementation

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0037] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] Example 1

[0041] like Figures 1 to 4 As shown, this embodiment provides a hydraulic control system for a support wheel, including a main control valve 1, a directional valve B3 and two oil cylinders A6. The oil outlet of the main control valve 1 is connected to one end of the oil supply pipeline, and the oil return port of the main control valve 1 is connected to one end of the oil return pipeline.

[0042] The reversing valve B3 is fixedly installed on the return oil pipeline, and has an interface one and an interface two that are interconnected or disconnected. The interface one and the interface two are respectively connected to the return oil pipeline.

[0043] The other end of the oil supply line is connected to the rod chamber of one of the cylinders, and the other end of the oil return line is connected to the rodless chamber of another cylinder, and the rodless chamber of one cylinder is connected to the rod chamber of the other cylinder.

[0044] During operation, the main control valve and two directional valves B are used to control the flow of oil to supply oil to the two hydraulic cylinders A, so as to realize the extension and retraction of the two hydraulic cylinders A. The control is convenient and efficient.

[0045] This embodiment has a simple structure and reasonable design. It uses a main control valve 1 to control the support wheels of the seeder, enabling remote operation, which greatly improves efficiency and reduces the intensity of operation for workers. This has greatly promoted the widespread adoption of multi-functional seeders.

[0046] Example 2

[0047] Based on Embodiment 1, this embodiment also includes a reversing valve A2, which is fixedly installed on the return oil pipeline and located between one end of the return oil pipeline and the reversing valve B3; the reversing valve A2 is provided with an interface three and an interface four that are interconnected or disconnected, and the interface three and the interface four are respectively connected to the return oil pipeline.

[0048] The scheme has a simple structure and reasonable design. It uses the reversing valve A2 to realize the on and off of the entire oil, thereby keeping the two oil cylinders A6 in the set state.

[0049] Example 3

[0050] Based on Example 2, in this example, the reversing valve A2 is an electromagnetic reversing valve.

[0051] It is more reasonable to use an electromagnetic directional valve for the A2 reversing valve, as it is easy to operate.

[0052] Example 4

[0053] Based on any one of Embodiments 2 to 3, in this embodiment, the reversing valve A2 is a two-position two-way valve.

[0054] It is more reasonable to use a two-position two-way valve for the reversing valve A2, as it is convenient to operate.

[0055] Example 5

[0056] Based on the above embodiments, this embodiment also includes a reversing valve C4 and two hydraulic cylinders B7. The rod chamber of one of the hydraulic cylinders B7 is connected to the oil supply pipeline through pipeline one, and the rodless chamber of the other hydraulic cylinder B7 is connected to the return oil pipeline through pipeline two. The rodless chamber of one of the hydraulic cylinders B7 is connected to the rod chamber of the other hydraulic cylinder B7.

[0057] The reversing valve C4 is fixedly installed on the second pipeline, and has an interface five and an interface six that are interconnected or disconnected. The interface five and the interface six are respectively connected to the second pipeline.

[0058] During operation, the main control valve 1, directional valve B3 and directional valve C4 are used to control the hydraulic fluid, thereby enabling the extension and retraction of the two hydraulic cylinders B7, which is convenient to operate.

[0059] Example 6

[0060] Based on embodiment 5, in this embodiment, a hydraulic lock 5 is fixedly installed on the first pipeline, and the control oil port of the hydraulic lock 5 is connected to the second pipeline through a control pipeline.

[0061] The scheme has a simple structure and reasonable design. It uses hydraulic lock 5 to realize the on and off of oil return, and is easy to operate.

[0062] Example 7

[0063] Based on any one of Embodiments 5 to 6, in this embodiment, the reversing valve C4 is a two-position, two-way electromagnetic reversing valve.

[0064] It is more reasonable to use a two-position, two-way solenoid directional valve for the C4 directional valve, as it is easy to operate.

[0065] Example 8

[0066] Based on the above embodiments, in this embodiment, the reversing valve B3 is an electromagnetic reversing valve.

[0067] Using an electromagnetic directional valve for directional valve B3 is more reasonable and convenient to operate.

[0068] Example 9

[0069] Based on the above embodiments, in this embodiment, the reversing valve B3 is a two-position two-way valve.

[0070] It is more reasonable to use a two-position two-way valve for the reversing valve B3, as it is convenient to operate.

[0071] Example 10

[0072] Based on the above embodiments, this embodiment also provides a seeder, including the support wheel hydraulic control system as described above.

[0073] This embodiment also provides a seeder with a simple structure and reasonable design. It uses a main control valve to control the support wheels of the seeder, realizing remote operation, which greatly improves efficiency and reduces the intensity of operation. It plays a significant role in promoting the widespread use of multi-functional seeders.

[0074] The working principle of this utility model is as follows:

[0075] (1) Hydraulic cylinder extended state:

[0076] At this time, solenoid directional valve A is de-energized, while solenoid directional valves B and C are energized. By operating the main control valve, the pressurized oil passes through solenoid valve A and then through solenoid valve B, splitting into two paths. One path goes to the large chamber of cylinder A, while the oil from the small chamber of cylinder A goes to the large chamber of the other cylinder A, causing both cylinders A to extend simultaneously. The other path goes through solenoid valve C to the large chamber of cylinder B, while the oil from the small chamber of cylinder B goes to the large chamber of the other cylinder B, causing both cylinders B to extend simultaneously. Hydraulic lock 5 will be forcibly opened under pressure, and the return oil from both cylinders B and cylinder A will converge and return to the oil tank via the main control valve (see reference). Figure 2 ).

[0077] (2) Hydraulic cylinder retracted state:

[0078] At this time, solenoid directional valve A is de-energized, while solenoid directional valves B and C are energized. By operating the main control valve, the pressure oil is divided into two paths. One path goes to the small chamber of cylinder A, while the oil from the large chamber of cylinder A goes to the small chamber of the other cylinder A, causing both cylinders A to retract simultaneously. The other path, after passing through hydraulic lock 5, goes to the small chamber of cylinder B, while the oil from the large chamber of cylinder B goes to the small chamber of the other cylinder B, causing both cylinders B to retract simultaneously. Thus, the return oil from both cylinders B and cylinder A is combined and returns to the oil tank via solenoid valves B and A through the main control valve (see reference). Figure 3 ).

[0079] (3) Hydraulic cylinder locked state:

[0080] After the support wheel is adjusted into position, operate the main control valve to the neutral position. Simultaneously, solenoid valve A is energized, while solenoid valves B and C are de-energized. The large chambers of cylinders A and B are closed by the check valve inside solenoid valve B, and the small chamber of cylinder B is closed by hydraulic lock 5. Solenoid valve A is energized, and its built-in check valve prevents external pressure oil from being supplied to the large chamber of cylinder A due to misoperation, thus preventing malfunction. At the same time, solenoid valve C is de-energized, preventing pressure shocks from affecting cylinder B. Thus, cylinders A and B are completely locked and remain stationary (see reference). Figure 4 ).

[0081] The beneficial effects of this utility model are as follows:

[0082] 1. The control function of the seeder's support wheels is realized by using the tractor's main control valve;

[0083] 2. Remote operation is achieved through electro-hydraulic control, which is convenient and quick;

[0084] 3. Position control of the support wheel is achieved by using logic control between components;

[0085] 4. The position of the support wheel is locked by adopting a special hydraulic locking structure.

[0086] It should be noted that the arrows in the attached diagram only indicate the path of oil flow and have no other substantial meaning.

[0087] In addition, all electronic components involved in this utility model adopt existing technology, and all the above-mentioned components are electrically connected to the controller, and the control circuit between the controller and each component is existing technology.

[0088] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0089] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0090] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hydraulic control system for a support wheel, characterized in that: It includes a main control valve (1), a reversing valve B (3) and two oil cylinders A (6). The oil outlet of the main control valve (1) is connected to one end of the oil supply pipeline, and the oil return port of the main control valve (1) is connected to one end of the oil return pipeline. The reversing valve B(3) is fixedly installed on the return oil pipeline, and has an interface one and an interface two that are connected or disconnected from each other, and the interface one and the interface two are respectively connected to the return oil pipeline. The other end of the oil supply line is connected to the rod chamber of one of the cylinders, and the other end of the oil return line is connected to the rodless chamber of another cylinder, and the rodless chamber of one cylinder is connected to the rod chamber of the other cylinder.

2. The hydraulic control system for the support wheel according to claim 1, characterized in that: It also includes a reversing valve A (2), which is fixedly installed on the return oil pipeline and located between one end of the return oil pipeline and the reversing valve B (3); the reversing valve A (2) is provided with an interface three and an interface four that are interconnected or disconnected, and the interface three and the interface four are respectively connected to the return oil pipeline.

3. The hydraulic control system for the support wheel according to claim 2, characterized in that: The reversing valve A(2) is an electromagnetic reversing valve.

4. The hydraulic control system for the support wheel according to claim 2, characterized in that: The reversing valve A(2) is a two-position two-way valve.

5. The hydraulic control system for the support wheel according to any one of claims 1-4, characterized in that: It also includes a reversing valve C(4) and two oil cylinders B(7), one of the oil cylinders B(7) has a rod chamber connected to the oil supply line through a pipeline one, and the other oil cylinder B(7) has a rodless chamber connected to the return line through a pipeline two, and the rodless chamber of one of the oil cylinders B(7) is connected to the rod chamber of the other oil cylinder B(7); The reversing valve C(4) is fixedly installed on the second pipeline, and has an interface five and an interface six that are interconnected or disconnected. The interface five and the interface six are respectively connected to the second pipeline.

6. The hydraulic control system for the support wheel according to claim 5, characterized in that: A hydraulic lock (5) is fixedly installed on the first pipeline, and the control port of the hydraulic lock (5) is connected to the second pipeline through the control pipeline.

7. The hydraulic control system for the support wheel according to claim 5, characterized in that: The reversing valve C(4) is a two-position, two-way electromagnetic reversing valve.

8. The hydraulic control system for the support wheel according to any one of claims 1-4, characterized in that: The reversing valve B(3) is an electromagnetic reversing valve.

9. The hydraulic control system for the support wheel according to any one of claims 1-4, characterized in that: The reversing valve B(3) is a two-position two-way valve.

10. A seeder, characterized in that: Includes the hydraulic control system for the support wheel as described in any one of claims 1-9.

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