Hydraulic system for cotton picker

Abstract

The utility model discloses a hydraulic system for a cotton picker, which comprises a plurality of working hydraulic systems including a first hydraulic system, a second hydraulic system, a third hydraulic system, a fourth hydraulic system, a fifth hydraulic system and a sixth hydraulic system. The first hydraulic system comprises a first hydraulic oil way, a second hydraulic oil way, a first oil cylinder and a second oil cylinder, the two ends of the first hydraulic oil way are connected with an oil tank and rod cavities of the first oil cylinder and the second oil cylinder respectively, and the two ends of the second hydraulic oil way are connected with a hydraulic source and rodless cavities of the first oil cylinder and the second oil cylinder respectively. A two-position two-way electromagnetic valve is arranged between the first hydraulic oil way and the second hydraulic oil way, and a two-position two-way electromagnetic valve is arranged on the second hydraulic oil way.

Description

Technical Field

[0001] The utility model relates to a hydraulic system for a cotton picker. Background Art

[0002] Agricultural machinery refers to various machines used in the processes of crop planting and animal husbandry production, as well as in the primary processing and handling of agricultural and livestock products. Agricultural machinery includes agricultural power machinery, farmland construction machinery, soil tillage machinery, planting and fertilizing machinery, plant protection machinery, farmland irrigation and drainage machinery, crop harvesting machinery, agricultural product processing machinery, animal husbandry machinery, and agricultural transportation machinery, etc.

[0003] The working functions of agricultural machinery are generally realized through hydraulic systems. Therefore, different agricultural machinery requires different supporting hydraulic systems. Content of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies of the above prior art and provide a hydraulic system for a cotton picker.

[0005] A hydraulic system for a cotton picker includes multiple working hydraulic systems. The working hydraulic systems include a first hydraulic system, a second hydraulic system, a third hydraulic system, a fourth hydraulic system, a fifth hydraulic system, and a sixth hydraulic system;

[0006] The first hydraulic system includes a first hydraulic oil circuit, a second hydraulic oil circuit, a first oil cylinder, and a second oil cylinder. Both ends of the first hydraulic oil circuit are respectively connected to the fuel tank and the rod chambers of the first oil cylinder and the second oil cylinder. Both ends of the second hydraulic oil circuit are respectively connected to the hydraulic source and the rodless chambers of the first oil cylinder and the second oil cylinder. A two-position two-way solenoid valve is provided between the first hydraulic oil circuit and the second hydraulic oil circuit, and a two-position two-way solenoid valve is provided on the second hydraulic oil circuit.

[0007] The second hydraulic system includes a third hydraulic oil circuit, a fourth hydraulic oil circuit, and a third oil cylinder. Both ends of the third hydraulic oil circuit are respectively connected to the rodless chamber of the third oil cylinder and the fuel tank. Both ends of the fourth hydraulic oil circuit are respectively connected to the hydraulic source and the rod chamber of the third oil cylinder. A two-position two-way solenoid valve is provided between the fourth hydraulic oil circuit and the third hydraulic oil circuit, and a two-position two-way solenoid valve is provided on the fourth hydraulic oil circuit.

[0008] One working position of the two-position two-way solenoid valve has a one-way cut-off function. The two-position two-way solenoid valve includes a first working position and a second working position. The two-position two-way solenoid valve includes a first liquid inlet and a first liquid outlet. First working position: The first liquid inlet is connected to the second liquid outlet. Second working position: The first liquid inlet is connected to the second liquid outlet, and a one-way valve is provided between the first liquid inlet and the second liquid inlet.

[0009] Preferably, the third hydraulic system includes a fifth hydraulic oil circuit, a sixth hydraulic oil circuit, a fourth oil cylinder, and a fifth oil cylinder. Both ends of the fifth hydraulic oil circuit are respectively connected to a hydraulic source and the rod chambers of the fourth oil cylinder and the fifth oil cylinder. Both ends of the sixth hydraulic oil circuit are respectively connected to a fuel tank and the rodless chambers of the fourth oil cylinder and the fifth oil cylinder. Both the fifth hydraulic oil circuit and the sixth hydraulic oil circuit are connected to a three-position four-way solenoid valve. Check valves are provided on both the fifth oil circuit and the sixth oil circuit, and the check valves are located between the three-position four-way solenoid valve and the fourth oil cylinder and the fifth oil cylinder.

[0010] Preferably, the fourth hydraulic system includes a seventh hydraulic oil circuit, an eighth hydraulic oil circuit, and a sixth oil cylinder. Both ends of the seventh hydraulic oil circuit are respectively connected to a hydraulic source and the rod chamber of the sixth oil cylinder. Both ends of the eighth hydraulic oil circuit are respectively connected to a fuel tank and the rodless chamber of the sixth oil cylinder. Both the seventh hydraulic oil circuit and the eighth hydraulic oil circuit are connected to a three-position four-way solenoid valve. Check valves are provided on both the seventh oil circuit and the eighth oil circuit, and the check valves are located between the three-position four-way solenoid valve and the sixth oil cylinder.

[0011] Preferably, the fifth hydraulic system includes a ninth hydraulic oil circuit, a tenth hydraulic oil circuit, and a seventh oil cylinder. Both ends of the ninth hydraulic oil circuit are respectively connected to a hydraulic source and the rod chamber of the seventh oil cylinder. Both ends of the tenth hydraulic oil circuit are respectively connected to a fuel tank and the rodless chamber of the seventh oil cylinder. Both the ninth hydraulic oil circuit and the tenth hydraulic oil circuit are connected to a three-position four-way solenoid valve. Check valves are provided on both the ninth oil circuit and the tenth oil circuit, and the check valves are located between the three-position four-way solenoid valve and the seventh oil cylinder.

[0012] Preferably, the three-position four-way solenoid valve includes a first working position, a second working position, and a third working position. The three-four-way solenoid valve includes a first liquid inlet, a second liquid inlet, a first liquid outlet, and a second liquid outlet. First working position: The first liquid inlet and the first liquid outlet are connected. Second working position: The second liquid inlet is connected to the first liquid outlet and the second liquid outlet. Third working position: The first liquid inlet is connected to the second liquid outlet, and the second liquid inlet and the first liquid outlet are connected.

[0013] Preferably, the sixth hydraulic system includes an eleventh hydraulic oil circuit, a twelfth hydraulic oil circuit, and a thirteenth hydraulic oil circuit. Both ends of the eleventh hydraulic oil circuit are respectively connected to a two-position three-way solenoid valve and a hydraulic source, and a pressure reducing valve is provided on the eleventh hydraulic oil circuit;

[0014] Both ends of the twelfth hydraulic oil circuit are respectively connected to both ends of the two-position three-way solenoid valve and the fuel tank. Both ends of the thirteenth hydraulic oil circuit are respectively connected to the two-position three-way solenoid valve and a hydraulic motor. The two-position three-way solenoid valve includes a first liquid inlet, a second liquid inlet, and a first liquid outlet. The two-position three-way solenoid valve includes a first working position and a second working position. First working position: The second liquid inlet is connected to the first liquid outlet. Second working position: The first liquid inlet is connected to the first liquid outlet.

[0015] Preferably, a stop valve is provided between the hydraulic source and the fuel tank.

[0016] Preferably, an overflow valve is provided between the hydraulic source and the fuel tank.

[0017] Beneficial effects: Compared with the prior art, the utility model meets the working requirements of agricultural machinery through the oil circuit system, simplifies the oil circuit structure to the greatest extent, and ensures the safety of the oil circuit at the same time. The function of the stop valve is realized by a two-position two-way solenoid valve with a one-way cut-off function, which ensures the hydraulic pressure of the hydraulic oil circuit. When the oil circuit pressure is too high, it can switch to another working position to relieve pressure, and the oil circuit hydraulic pressure is ensured by the overflow valve during operation, so as to meet some functional requirements of the cotton picker. Description of the Drawings

[0018] Figure 1 is a schematic diagram of a hydraulic system for a cotton picker;

[0019] In the figure, 1. First hydraulic system, 2. Second hydraulic system, 3. Third hydraulic system, 4. Fourth hydraulic system, 5. Fifth hydraulic system, 6. Sixth hydraulic system, 7. First hydraulic oil circuit, 8. Second hydraulic oil circuit, 9. Third hydraulic oil circuit, 10. Fourth hydraulic oil circuit, 11. Fifth hydraulic oil circuit, 12. Sixth hydraulic oil circuit, 13. Seventh hydraulic oil circuit, 14. Eighth hydraulic oil circuit, 15. Ninth hydraulic oil circuit, 16. Tenth hydraulic oil circuit, 17. Eleventh hydraulic oil circuit, 18. First oil cylinder, 19. Second oil cylinder, 20. Third oil cylinder, 21. Fourth oil cylinder, 22. Fifth oil cylinder, 23. Sixth oil cylinder, 24. Seventh oil cylinder, 25. Hydraulic motor, 26. Twelfth hydraulic oil circuit, 27. Thirteenth hydraulic oil circuit, 28. Two-position two-way solenoid valve, 29. Three-position four-way solenoid valve, 30. Pressure reducing valve, 31. Stop valve, 32. Overflow valve. Detailed Embodiments

[0020] In order to deepen the understanding of the present utility model, the present utility model will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present utility model and do not constitute a limitation on the protection scope of the present utility model.

[0021] As Figure 1As shown, a first hydraulic system 1, a second hydraulic system 2, a third hydraulic system 3, a fourth hydraulic system 4, a fifth hydraulic system 5, a sixth hydraulic system 6, a first hydraulic oil circuit 7, a second hydraulic oil circuit 8, a third hydraulic oil circuit 9, a fourth hydraulic oil circuit 10, a fifth hydraulic oil circuit 11, a sixth hydraulic oil circuit 12, a seventh hydraulic oil circuit 13, an eighth hydraulic oil circuit 14, a ninth hydraulic oil circuit 15, a tenth hydraulic oil circuit 16, an eleventh hydraulic oil circuit 17, a first oil cylinder 18, a second oil cylinder 19, a third oil cylinder 20, a fourth oil cylinder 31, a fifth oil cylinder 22, a sixth oil cylinder 23, a seventh oil cylinder 24, a hydraulic motor 25, a twelfth hydraulic oil circuit 26, a thirteenth hydraulic oil circuit 27, a two-position two-way solenoid valve 28, a three-position four-way solenoid valve 29, a pressure reducing valve 30, a stop valve 31, a relief valve 32;

[0022] A hydraulic system for a cotton picker, comprising a plurality of working hydraulic systems, the working hydraulic systems including a first hydraulic system 1, a second hydraulic system 2, a third hydraulic system 3, a fourth hydraulic system 4, a fifth hydraulic system 5, a sixth hydraulic system 6;

[0023] The first hydraulic system 1 includes a first hydraulic oil circuit 7, a second hydraulic oil circuit 8, a first oil cylinder 18, and a second oil cylinder 19. Both ends of the first hydraulic oil circuit 7 are respectively connected to the oil tank and the rod chambers of the first oil cylinder 18 and the second oil cylinder 19. Both ends of the second hydraulic oil circuit 8 are respectively connected to the hydraulic source and the rodless chambers of the first oil cylinder 18 and the second oil cylinder 19. A two-position two-way solenoid valve 28 is provided between the first hydraulic oil circuit 7 and the second hydraulic oil circuit 8, and a two-position two-way solenoid valve 28 is provided on the second hydraulic oil circuit 8.

[0024] The second hydraulic system 2 includes a third hydraulic oil circuit 9, a fourth hydraulic oil circuit 10, and a third oil cylinder 20. Both ends of the third hydraulic oil circuit 9 are respectively connected to the rodless chamber of the third oil cylinder 20 and the oil tank. Both ends of the fourth hydraulic oil circuit 10 are respectively connected to the hydraulic source and the rod chamber of the third oil cylinder 20. A two-position two-way solenoid valve 28 is provided between the fourth hydraulic oil circuit 10 and the third hydraulic oil circuit 9, and a two-position two-way solenoid valve 28 is provided on the fourth hydraulic oil circuit 10.

[0025] One working position of the two-position two-way solenoid valve 28 has a one-way cut-off function. The two-position two-way solenoid valve 28 includes a first working position and a second working position. The two-position two-way solenoid valve 28 includes a first liquid inlet and a first liquid outlet. First working position: The first liquid inlet is connected to the second liquid outlet. Second working position: The first liquid inlet is connected to the second liquid outlet, and a one-way valve is provided between the first liquid inlet and the second liquid inlet.

[0026] In this embodiment, the third hydraulic system 3 includes a fifth hydraulic oil circuit 11, a sixth hydraulic oil circuit 12, a fourth oil cylinder 31, and a fifth oil cylinder 22. Both ends of the fifth hydraulic oil circuit 11 are connected to the hydraulic source and the rod chambers of the fourth oil cylinder 31 and the fifth oil cylinder 22 respectively. Both ends of the sixth hydraulic oil circuit 12 are connected to the oil tank and the rodless chambers of the fourth oil cylinder 31 and the fifth oil cylinder 22 respectively. Both the fifth hydraulic oil circuit 11 and the sixth hydraulic oil circuit 12 are connected to a three-position four-way solenoid valve 29. Check valves are provided on both the fifth oil circuit and the sixth oil circuit, and the check valves are located between the three-position four-way solenoid valve 29 and the fourth oil cylinder 31 and the fifth oil cylinder 22.

[0027] In this embodiment, the fourth hydraulic system 4 includes a seventh hydraulic oil circuit 13, an eighth hydraulic oil circuit 14, and a sixth oil cylinder 23. Both ends of the seventh hydraulic oil circuit 13 are connected to the hydraulic source and the rod chamber of the sixth oil cylinder 23 respectively. Both ends of the eighth hydraulic oil circuit 14 are connected to the oil tank and the rodless chamber of the sixth oil cylinder 23 respectively. Both the seventh hydraulic oil circuit 13 and the eighth hydraulic oil circuit 14 are connected to a three-position four-way solenoid valve 29. Check valves are provided on both the seventh oil circuit and the eighth oil circuit, and the check valves are located between the three-position four-way solenoid valve 29 and the sixth oil cylinder 23.

[0028] In this embodiment, the fifth hydraulic system 5 includes a ninth hydraulic oil circuit 15, a tenth hydraulic oil circuit 16, and a seventh oil cylinder 24. Both ends of the ninth hydraulic oil circuit 15 are connected to the hydraulic source and the rod chamber of the seventh oil cylinder 24 respectively. Both ends of the tenth hydraulic oil circuit 16 are connected to the oil tank and the rodless chamber of the seventh oil cylinder 24 respectively. Both the ninth hydraulic oil circuit 15 and the tenth hydraulic oil circuit 16 are connected to a three-position four-way solenoid valve 29. Check valves are provided on both the ninth oil circuit and the tenth oil circuit, and the check valves are located between the three-position four-way solenoid valve 29 and the seventh oil cylinder 24.

[0029] In this embodiment, the three-position four-way solenoid valve 29 includes a first working position, a second working position, and a third working position. The three-way four-way solenoid valve includes a first liquid inlet, a second liquid inlet, a first liquid outlet, and a second liquid outlet. First working position: The first liquid inlet is connected to the first liquid outlet. Second working position: The second liquid inlet is connected to the first liquid outlet and the second liquid outlet. Third working position: The first liquid inlet is connected to the second liquid outlet, and the second liquid inlet is connected to the first liquid outlet.

[0030] In this embodiment, the sixth hydraulic system 6 includes an eleventh hydraulic oil circuit 17, a twelfth hydraulic oil circuit 26, and a thirteenth hydraulic oil circuit 27. Both ends of the eleventh hydraulic oil circuit 17 are connected to a two-position three-way solenoid valve and the hydraulic source respectively. A pressure reducing valve 30 is provided on the eleventh hydraulic oil circuit 17;

[0031] Both ends of the twelfth hydraulic oil circuit 26 are respectively connected to both ends of a two-position three-way solenoid valve and a fuel tank. Both ends of the thirteenth hydraulic oil circuit 27 are respectively connected to the two-position three-way solenoid valve and the hydraulic motor 25. The two-position three-way solenoid valve includes a first liquid inlet, a second liquid inlet, and a first liquid outlet. The two-position three-way solenoid valve includes a first working position and a second working position. First working position: The second liquid inlet is connected to the first liquid outlet. Second working position: The first liquid inlet is connected to the first liquid outlet.

[0032] In this embodiment, a stop valve 31 is provided between the hydraulic source and the fuel tank.

[0033] In this embodiment, a relief valve 32 is provided between the hydraulic source and the fuel tank.

[0034] Instructions for use: The first hydraulic system 1 is a rod lifting system, the second hydraulic system 2 is a film picking-up and lifting system, the third hydraulic system 3 is a bale opening system, the fourth hydraulic system 4 is a bracket lifting system, the fifth hydraulic system 5 is a clutch swing arm system, and the sixth hydraulic system 6 is an engine fan system.

[0035] According to different working requirements, control the solenoid valve to change positions.

[0036] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A hydraulic system for a cotton picker, characterized in that: It includes a plurality of working hydraulic systems, wherein the working hydraulic system includes a first hydraulic system, a second hydraulic system, a third hydraulic system, a fourth hydraulic system, a fifth hydraulic system, and a sixth hydraulic system; The first hydraulic system comprises a first hydraulic oil circuit, a second hydraulic oil circuit, a first oil cylinder and a second oil cylinder. The two ends of the first hydraulic oil circuit are respectively connected to the oil tank and the rod chambers of the first oil cylinder and the second oil cylinder. The two ends of the second hydraulic oil circuit are respectively connected to the hydraulic source and the rodless chambers of the first oil cylinder and the second oil cylinder. A two-position two-way solenoid valve is provided between the first hydraulic oil circuit and the second hydraulic oil circuit, and a two-position two-way solenoid valve is provided on the second hydraulic oil circuit. The second hydraulic system includes a third hydraulic oil circuit, a fourth hydraulic oil circuit, and a third oil cylinder. The two ends of the third hydraulic oil circuit are respectively connected to the rodless chamber of the third oil cylinder and the oil tank, and the two ends of the fourth hydraulic oil circuit are respectively connected to the hydraulic source and the rod chamber of the third oil cylinder. A two-position two-way solenoid valve is provided between the fourth hydraulic oil circuit and the third hydraulic oil circuit, and a two-position two-way solenoid valve is provided on the fourth hydraulic oil circuit.

2. A hydraulic system for a cotton picker according to claim 1, characterized in that: One station of the two-position two-way solenoid valve has a one-way shut-off function. The two-position two-way solenoid valve includes a first station and a second station. The two-position two-way solenoid valve includes a first liquid inlet and a first liquid outlet. In the first station: the first liquid inlet is connected to the second liquid outlet, and in the second station: the first liquid inlet is connected to the second liquid outlet, and a one-way valve is provided between the first liquid inlet and the second liquid inlet.

3. A hydraulic system for a cotton picker according to claim 1, characterized in that: The third hydraulic system includes a fifth hydraulic oil circuit, a sixth hydraulic oil circuit, a fourth oil cylinder, and a fifth oil cylinder. The two ends of the fifth hydraulic oil circuit are respectively connected to the hydraulic source and the rod chambers of the fourth oil cylinder and the fifth oil cylinder. The two ends of the sixth hydraulic oil circuit are respectively connected to the oil tank and the rodless chambers of the fourth oil cylinder and the fifth oil cylinder. The fifth hydraulic oil circuit and the sixth hydraulic oil circuit are both connected to a three-position four-way solenoid valve. Both the fifth oil circuit and the sixth oil circuit are provided with a one-way valve, and the one-way valve is located between the three-position four-way solenoid valve and the fourth oil cylinder and the fifth oil cylinder.

4. A hydraulic system for a cotton picker according to claim 1, characterized in that: The fourth hydraulic system includes a seventh hydraulic oil circuit, an eighth hydraulic oil circuit, and a sixth oil cylinder. The two ends of the seventh hydraulic oil circuit are respectively connected to the hydraulic source and the rod chamber of the sixth oil cylinder, and the two ends of the eighth hydraulic oil circuit are respectively connected to the oil tank and the rodless chamber of the sixth oil cylinder. The seventh hydraulic oil circuit and the eighth hydraulic oil circuit are both connected to a three-position four-way solenoid valve. Both the seventh oil circuit and the eighth oil circuit are provided with a one-way valve, and the one-way valve is located between the three-position four-way solenoid valve and the sixth oil cylinder.

5. The hydraulic system for a cotton picker according to claim 1, characterized in that: The fifth hydraulic system includes a ninth hydraulic oil circuit, a tenth hydraulic oil circuit, and a seventh oil cylinder. The two ends of the ninth hydraulic oil circuit are respectively connected to the hydraulic source and the rod chamber of the seventh oil cylinder, and the two ends of the tenth hydraulic oil circuit are respectively connected to the oil tank and the rodless chamber of the seventh oil cylinder. The ninth hydraulic oil circuit and the tenth hydraulic oil circuit are both connected to a three-position four-way solenoid valve. Both the ninth oil circuit and the tenth oil circuit are provided with a one-way valve, and the one-way valve is located between the three-position four-way solenoid valve and the seventh oil cylinder.

6. The hydraulic system for a cotton picker according to any one of claims 3 to 5, characterized in that: The three-position four-way solenoid valve comprises a first station, a second station and a third station. The three-position four-way solenoid valve comprises a first liquid inlet, a second liquid inlet, a first liquid outlet and a second liquid outlet. The first station: the first liquid inlet is connected to the first liquid outlet, the second station: the second liquid inlet is connected to the first liquid outlet and the second liquid outlet, the third station: the first liquid inlet is connected to the second liquid outlet, and the second liquid inlet is connected to the first liquid outlet.

7. A hydraulic system for a cotton picker according to claim 6, characterized in that: The sixth hydraulic system comprises an eleventh hydraulic oil circuit, a twelfth hydraulic oil circuit, and a thirteenth hydraulic oil circuit, the two ends of the eleventh hydraulic oil circuit are respectively connected to a two-position three-way solenoid valve and a hydraulic source, and a pressure reducing valve is provided on the eleventh hydraulic oil circuit; The two ends of the twelfth hydraulic oil circuit are respectively connected to the two-position three-way solenoid valve and the two ends of the oil tank, and the two ends of the thirteenth hydraulic oil circuit are respectively connected to the two-position three-way solenoid valve and the hydraulic motor, the two-position three-way solenoid valve includes a first liquid inlet, a second liquid inlet, and a first liquid outlet, the two-position three-way solenoid valve includes a first workstation and a second workstation, the first workstation: the second liquid inlet is connected to the first liquid outlet, the second workstation: the first liquid inlet is connected to the first liquid outlet.

8. A hydraulic system for a cotton picker according to claim 7, characterized in that: A stop valve is provided between the hydraulic source and the oil tank.

9. A hydraulic system for a cotton picker according to claim 7, characterized in that: An overflow valve is arranged between the hydraulic source and the oil tank.

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