Combined hydraulic system and agricultural machine

Abstract

The utility model provides a combined hydraulic system which is used on agricultural machinery and comprises an oil tank, an oil pump and an electromagnetic hydraulic valve, the oil tank is detachably and fixedly arranged on the oil pump, and the electromagnetic hydraulic valve is detachably and fixedly arranged on one side of the oil pump; the oil pump is provided with an oil inlet end, and the oil inlet end is communicated with the oil tank; the oil pump is provided with an oil outlet end, and the oil outlet end is communicated with the electromagnetic hydraulic valve. According to the combined hydraulic system of the structure, the oil tank is directly arranged on the oil pump, the electromagnetic hydraulic valve is also arranged on the oil pump, the oil inlet end of the oil pump is directly communicated with the oil tank, and the oil outlet end of the oil pump is directly communicated with the electromagnetic hydraulic valve, so that the traditional mode that the oil pump is connected with the oil tank through a pipeline and the oil pump is connected with the hydraulic valve through a pipeline is changed; the overall size of the combined hydraulic system is effectively reduced, the occupied space is smaller, the hydraulic loss is smaller, and the working efficiency is higher. In addition, the utility model further provides an agricultural machine comprising the combined hydraulic system.

Description

Technical Field

[0001] The utility model relates to the field of agricultural machinery, in particular to a combined hydraulic system and an agricultural machinery. Background Art

[0002] In recent years, with the continuous development of technology, hydraulic systems of various structures have been more and more widely applied to various machines.

[0003] The currently widely used hydraulic system generally includes components such as an oil tank, an oil pump, and an electromagnetic hydraulic valve. The oil inlet end of the oil pump is connected to the oil tank through a pipeline, and the oil outlet end of the oil pump is connected to the electromagnetic hydraulic valve through a pipeline. The lengths of the pipelines are different, and relatively speaking, its volume is larger and it occupies more space. If the requirement for space is high, it cannot be used. In addition, if the length of the pipeline is long, due to reasons such as the friction between the oil and the pipeline, it will also affect the working efficiency of the hydraulic system to a certain extent.

[0004] In summary, how to provide a combined hydraulic system with a smaller occupied space, higher hydraulic efficiency, and a wider application range, as well as an agricultural machinery including this combined hydraulic system, has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a combined hydraulic system with a smaller occupied space, higher hydraulic efficiency, and a wider application range, as well as an agricultural machinery including this combined hydraulic system.

[0006] The solution of the utility model is realized as follows: The utility model provides a combined hydraulic system for an agricultural machinery, which includes an oil tank, an oil pump, and an electromagnetic hydraulic valve. The oil tank is detachably and fixedly arranged on the oil pump, and the electromagnetic hydraulic valve is detachably and fixedly arranged on one side of the oil pump; the oil pump is provided with an oil inlet end, and the oil inlet end is connected to the oil tank; the oil pump is provided with an oil outlet end, and the oil outlet end is connected to the electromagnetic hydraulic valve. For the combined hydraulic system with this structure, the oil tank is directly arranged on the oil pump, and the electromagnetic hydraulic valve is also arranged on the oil pump. The oil inlet end of the oil pump is directly connected to the oil tank, and the oil outlet end of the oil pump is directly connected to the electromagnetic hydraulic valve, changing the traditional connection method between the oil pump and the oil tank, and between the oil pump and the hydraulic valve through pipelines, effectively reducing the overall volume of the combined hydraulic system, with a smaller occupied space, less hydraulic loss, and higher working efficiency.

[0007] Another technical solution of the utility model is that on the basis of the above, one end of the oil pump is further provided with an input shaft for inputting power. When the input shaft rotates, it drives the oil pump to work.

[0008] Another technical solution of the present utility model is based on the above, wherein the oil pump is a gear pump and the input shaft is a spline shaft.

[0009] Another technical solution of the present utility model is based on the above, wherein a solenoid valve is further provided on the electromagnetic hydraulic valve. The solenoid valve is communicated with the electromagnetic hydraulic valve and can control the working state of the electromagnetic hydraulic valve.

[0010] Another technical solution of the present utility model is based on the above, wherein an oil outlet is further provided on the electromagnetic hydraulic valve. The oil outlet is used to provide pressure oil for the hydraulic components of agricultural machinery.

[0011] Another technical solution of the present utility model is based on the above, wherein an openable fuel tank cap is further provided on the fuel tank, and a first oil return port is further provided on the fuel tank.

[0012] Another technical solution of the present utility model is based on the above, wherein a second oil return port is further provided on the electromagnetic hydraulic valve. The second oil return port is communicated with the first oil return port.

[0013] Another technical solution of the present utility model is based on the above, wherein the combined hydraulic system further includes an oil return pipe. One end of the oil return pipe is connected to the first oil return port, and the other end of the oil return port is connected to the second oil return port.

[0014] On the other hand, the present utility model also provides an agricultural machinery, including a combined hydraulic system, and the combined hydraulic system is the combined hydraulic system as described above.

[0015] Another technical solution of the present utility model is based on the above, wherein the agricultural machinery includes an engine and hydraulic components. The input shaft of the oil pump is connected to the engine, and the oil outlet of the electromagnetic hydraulic valve is connected to the hydraulic components. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0017] Figure 1 FIG. is a schematic structural diagram of a combined hydraulic system of the present utility model;

[0018] Figure 2 is Figure 1 a schematic structural diagram from another perspective.

[0019] The corresponding relationship of the reference numerals is as follows:

[0020] 1 gear pump 2 fuel tank 3 electromagnetic hydraulic valve

[0021] 4 Return oil pipe, 5 Spline shaft, 6 Oil outlet

[0022] 7 Fuel tank cap, 8 Solenoid valve, 9 First return oil port

[0023] 10 Second return oil port Specific implementation mode

[0024] The present utility model will be described in detail below with reference to the accompanying drawings. The description of this part is only exemplary and explanatory, and should not have any restrictive effect on the protection scope of the present utility model. In addition, those skilled in the art can make corresponding combinations of the features in the embodiments and different embodiments in this document according to the description of this document.

[0025] The embodiments of the present utility model are as follows. Please refer to Figure 1 and Figure 2 The combined hydraulic system shown is used in agricultural machinery and specifically includes a fuel tank 2, an oil pump, and an electromagnetic hydraulic valve 3. The fuel tank 2 is detachably and fixedly arranged on the oil pump, that is, on the upper end face shown in the figure. The electromagnetic hydraulic valve 3 is detachably and fixedly arranged on one side of the oil pump, that is, Figure 2 the right side shown. The oil pump is provided with an oil inlet end for oil intake, and the oil inlet end is directly communicated with the fuel tank 2. At the same time, the oil pump is provided with an oil outlet end, and the oil outlet end is directly communicated with the electromagnetic hydraulic valve 3. For the combined hydraulic system with this structure, the fuel tank 2 is directly arranged on the oil pump, and the electromagnetic hydraulic valve 3 is also arranged on the oil pump. The oil inlet end of the oil pump is directly communicated with the fuel tank 2, and the oil outlet end of the oil pump is directly communicated with the electromagnetic hydraulic valve 3, changing the traditional connection method between the oil pump and the fuel tank 2, as well as between the oil pump and the hydraulic valve through pipelines, effectively reducing the overall volume of the combined hydraulic system, with a smaller occupied space, less hydraulic loss, and higher working efficiency.

[0026] On the basis of the above embodiment, in another embodiment of the present utility model, as Figure 1 shown, one end of the oil pump, that is, the left end shown in the figure, is also provided with an input shaft for inputting power to the oil pump. When the input shaft rotates, it drives the oil pump to work.

[0027] On the basis of the above embodiment, in another embodiment of the present utility model, as Figure 1 shown, for the oil pump, it is preferably a gear pump 1. For the input shaft, it is preferably a spline shaft 5, and the engine of the agricultural machinery, etc. is directly connected to the spline shaft 5. When the engine works, it drives the spline shaft 5 to rotate.

[0028] On the basis of the above embodiment, in another embodiment of the present utility model, as Figure 1 shown, the electromagnetic hydraulic valve 3 is also provided with a solenoid valve 8, and the solenoid valve 8 is communicated with the electromagnetic hydraulic valve 3. During operation, the solenoid valve 8 can control the working state of the electromagnetic hydraulic valve 3 as needed.

[0029] On the basis of the above embodiments, in another embodiment of the present utility model, as Figure 1 shown, an oil outlet 6 is further provided on the electromagnetic hydraulic valve 3, and the oil outlet 6 is used to connect with the hydraulic components of agricultural machinery and provide pressure oil for the hydraulic components.

[0030] On the basis of the above embodiments, in another embodiment of the present utility model, as Figure 1 shown, an openable fuel tank cover 7 is further provided on the fuel tank 2. The fuel tank cover 7 is arranged on the top of the fuel tank 2, and a first oil return port 9 is further provided on the fuel tank 2. The first oil return port 9 is arranged on the side wall of the fuel tank 2.

[0031] On the basis of the above embodiments, in another embodiment of the present utility model, as Figure 1 shown, a second oil return port 10 is further provided on the electromagnetic hydraulic valve 3. The second oil return port 10 is communicated with the first oil return port 9. The oil returned from the electromagnetic hydraulic valve 3 flows back to the fuel tank 2 after passing through the second oil return port and the first oil return port 9.

[0032] On the basis of the above embodiments, in another embodiment of the present utility model, as Figure 1 shown, the combined hydraulic system further includes an oil return pipe 4. One end of the oil return pipe 4, that is, the upper end shown in the figure, is connected to the first oil return port 9, and the other end of the oil return port, that is, the lower end shown in the figure, is connected to the second oil return port 10. The oil returned from the electromagnetic hydraulic valve 3 enters the oil return pipe 4 after passing through the second oil return port, and then flows back to the fuel tank 2 through the first oil return port 9.

[0033] For the combined hydraulic system with the above structure, the fuel tank 2 is directly arranged on the oil pump, and the electromagnetic hydraulic valve 3 is also arranged on the oil pump. The oil inlet end of the oil pump is directly communicated with the fuel tank 2, and the oil outlet end of the oil pump is directly communicated with the electromagnetic hydraulic valve 3. This changes the traditional connection method between the oil pump and the fuel tank 2, as well as between the oil pump and the hydraulic valve through pipelines, effectively reducing the overall volume of the combined hydraulic system, occupying less space, having less hydraulic loss, and higher working efficiency.

[0034] On the other hand, the present utility model also proposes an agricultural machinery, including a combined hydraulic system, and the combined hydraulic system is specifically the combined hydraulic system as described above.

[0035] On the basis of the above embodiments, in another embodiment of the present utility model, the agricultural machinery includes an engine and hydraulic components. The input shaft of the oil pump is connected to the engine, and the oil outlet 6 of the electromagnetic hydraulic valve 3 is connected to the hydraulic components.

[0036] For the agricultural machinery with this structure, correspondingly, it has the advantages of the above combined hydraulic system.

[0037] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A combined hydraulic system for agricultural machinery, characterized in that, It includes a fuel tank, an oil pump, and an electromagnetic hydraulic valve. The fuel tank is detachably and fixedly arranged on the oil pump, and the electromagnetic hydraulic valve is detachably and fixedly arranged on one side of the oil pump; The oil pump is provided with an oil inlet end, and the oil inlet end is communicated with the fuel tank; The oil pump is provided with an oil outlet end, and the oil outlet end is communicated with the electromagnetic hydraulic valve.

2. The combined hydraulic system according to claim 1, characterized in that, One end of the oil pump is further provided with an input shaft for inputting power. When the input shaft rotates, it drives the oil pump to work.

3. The combined hydraulic system according to claim 2, characterized in that, The oil pump is a gear pump, and the input shaft is a spline shaft.

4. The combined hydraulic system according to claim 3, wherein, The electromagnetic hydraulic valve is further provided with an electromagnetic valve. The electromagnetic valve is communicated with the electromagnetic hydraulic valve and can control the working state of the electromagnetic hydraulic valve.

5. The combined hydraulic system according to claim 4, wherein, The electromagnetic hydraulic valve is further provided with an oil outlet, and the oil outlet is used to provide pressure oil for the hydraulic components of agricultural machinery.

6. The combined hydraulic system according to claim 5, wherein, The fuel tank is further provided with an openable fuel tank cap, and the fuel tank is further provided with a first oil return port.

7. The combined hydraulic system according to claim 6, wherein The electromagnetic hydraulic valve is further provided with a second oil return port, and the second oil return port is communicated with the first oil return port.

8. The combined hydraulic system according to claim 7, characterized in that, The combined hydraulic system further includes an oil return pipe. One end of the oil return pipe is connected to the first oil return port, and the other end of the oil return port is connected to the second oil return port.

9. An agricultural machine, comprising a combined hydraulic system, characterized in that, The combined hydraulic system is the combined hydraulic system according to any one of claims 1 to 8.

10. The combined hydraulic system according to claim 8, characterized in that, The agricultural machinery includes an engine and hydraulic components. The input shaft of the oil pump is connected to the engine, and the oil outlet of the electromagnetic hydraulic valve is connected to the hydraulic components.

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