Hydraulic system for power gear shifting and gearbox heat dissipation

Abstract

The utility model provides a power shifting and gearbox radiating hydraulic system, which comprises a gearbox, a radiator, a control valve and a gear pump, a pipeline is arranged among the gearbox, the radiator, the control valve and the gear pump, a buffer inner pipe is arranged in the pipeline close to the gearbox, a cavity is arranged between the buffer inner pipe and the inner wall of the pipeline, and the gear pump is arranged in the cavity. The cavity is communicated with the pipeline, and a buffering structure and a constant-temperature structure are arranged on the buffering inner pipe. The buffer inner pipe is installed in the pipeline, hydraulic oil can be buffered through the buffer inner pipe, impact caused by large pressure of the hydraulic oil is prevented, pressure can be relieved through the buffer inner pipe, the constant-temperature structure is installed on the buffer inner pipe, and the temperature of the hydraulic oil can be guaranteed through the constant-temperature structure. And control lag caused by low temperature of the hydraulic oil is prevented.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic system technology, specifically a hydraulic system for power shifting and gearbox cooling. Background Technology

[0002] With the continuous improvement of agricultural mechanization, it has become common for large machinery to be equipped with power shift transmissions. When the existing transmission hydraulic system is in use, the hydraulic oil will generate a large impact at the moment of hydraulic oil movement, which will cause noise and reduce the service life of the device. In addition, when the weather is cold in winter, the viscosity of the hydraulic oil is higher, which will cause control to lag. The damping of the oil through the valve port increases, resulting in slow action and affecting vehicle safety.

[0003] Therefore, this utility model provides a hydraulic system for power shifting and gearbox cooling. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a hydraulic system for power shifting and gearbox cooling, thereby solving the problems mentioned in the background section. This invention can buffer the hydraulic oil to prevent large pressures from causing shocks, and can also release pressure through the buffer inner tube; it can also ensure the temperature of the hydraulic oil to prevent low hydraulic oil temperature from causing control lag.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a hydraulic system for power shifting and gearbox cooling, comprising a gearbox, a radiator, a control valve, and a gear pump, wherein a pipe is installed between the gearbox, the radiator, the control valve, and the gear pump, and a buffer inner tube is installed in the pipe near the gearbox, a cavity is provided between the buffer inner tube and the inner wall of the pipe, the cavity is connected to the pipe, and a buffer structure and a constant temperature structure are installed on the buffer inner tube.

[0006] Furthermore, the inner buffer tube is fixedly connected to the pipeline, and multiple communication ports are opened on the periphery of the inner buffer tube.

[0007] Furthermore, the connecting port is connected to the pipe and the cavity, and multiple connecting ports are located at both ends of the buffer inner tube.

[0008] Furthermore, the buffer structure includes a piston that slides within the inner side of the buffer inner tube.

[0009] Furthermore, both ends of the inner buffer tube are equipped with limiting rings.

[0010] Furthermore, the constant temperature structure includes a resistance wire, which is fixed inside the buffer inner tube.

[0011] Furthermore, a safety valve and a filter are installed between the control valve and the gear pump, and the safety valve and the filter are connected to the gear pump through pipes and the control valve.

[0012] Furthermore, an energy storage device is installed on one side of the control valve.

[0013] The beneficial effects of this utility model are as follows: This utility model provides a hydraulic system for power shifting and gearbox cooling, comprising: pipes; a buffer inner pipe; a constant temperature structure; a gearbox; a control valve; and a radiator.

[0014] Installing a buffer inner tube inside the pipeline can buffer the hydraulic oil, preventing large pressure shocks from the hydraulic oil. It can also release pressure through the buffer inner tube. Installing a temperature-regulating structure on the buffer inner tube can maintain the temperature of the hydraulic oil and prevent control lag caused by low hydraulic oil temperature. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a hydraulic system for power shifting and gearbox cooling according to the present invention;

[0016] Figure 2 This is a schematic diagram of the pipeline structure in a hydraulic system for power shifting and gearbox cooling according to the present invention.

[0017] Figure 3 This is a schematic diagram of the assembly cross-sectional structure of the pipes and buffer inner tube in a hydraulic system for power shifting and gearbox cooling according to the present invention.

[0018] In the diagram: 1. Gearbox; 2. Control valve; 3. Radiator; 4. Gear pump; 5. Safety valve; 6. Filter; 7. Energy accumulator; 8. Pipeline; 9. Buffer inner tube; 10. Cavity; 11. Connecting port; 12. Piston; 13. Resistance wire. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] Please see Figures 1 to 3 This utility model provides a technical solution: a hydraulic system for power shifting and gearbox cooling, including a gearbox 1, a radiator 3, a control valve 2 and a gear pump 4. A pipe 8 is installed between the gearbox 1, the radiator 3, the control valve 2 and the gear pump 4. A buffer inner pipe 9 is installed in the pipe 8 near the gearbox 1. A cavity 10 is provided between the buffer inner pipe 9 and the inner wall of the pipe 8. The cavity 10 is connected to the pipe 8. A buffer structure and a constant temperature structure are installed on the buffer inner pipe 9.

[0021] In this embodiment, the inner buffer tube 9 is fixedly connected to the pipe 8. Multiple communication ports 11 are opened on the periphery of the inner buffer tube 9. The communication ports 11 are connected to the pipe 8 and the cavity 10. The multiple communication ports 11 are located at both ends of the inner buffer tube 9. The buffer structure includes a piston 12. The piston 12 is slidably fitted on the opposite inner side of the inner buffer tube 9. Limiting rings are installed at both ends of the inner buffer tube 9.

[0022] Specifically, when high-pressure hydraulic oil enters pipe 8, it enters the buffer inner tube 9. Then, a portion of the hydraulic oil enters the cavity 10 through the connecting port 11 and flows out directly from the connecting port 11 at the other end, thus achieving a pressure relief effect. The other portion of the hydraulic oil enters the buffer inner tube 9 and pushes the piston 12, thereby buffering the hydraulic oil through the piston 12.

[0023] The constant temperature structure includes a resistance wire 13, which is fixed inside the buffer inner tube 9.

[0024] Specifically, when the weather is cold in winter, the resistance wire 13 can be energized to heat the hydraulic oil in the buffer inner tube 9, preventing the hydraulic oil from becoming viscous due to the cold weather. Once the hydraulic oil has heated up, the heating can be stopped to prevent the hydraulic oil temperature from becoming too high.

[0025] A safety valve 5 and a filter 6 are installed between the control valve 2 and the gear pump 4. The safety valve 5 and the filter 6 are connected to the gear pump 4 through the control valve 2 via the pipeline 8. An energy storage device 7 is installed on one side of the control valve 2.

[0026] Specifically, the gearbox 1 can be used to change gears, thereby enabling functions such as switching the parking brake. It can also be used to dissipate heat through the radiator 3 to ensure thermal balance and lubricate the internal parts of the gearbox 1.

[0027] 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.

Claims

1. A hydraulic system for power shifting and gearbox cooling, comprising a gearbox (1), a radiator (3), a control valve (2), and a gear pump (4), characterized in that, A pipe (8) is installed between the gearbox (1), radiator (3), control valve (2) and gear pump (4). A buffer inner tube (9) is installed in the pipe (8) near the gearbox (1). A cavity (10) is provided between the buffer inner tube (9) and the inner wall of the pipe (8). The cavity (10) is connected to the pipe (8). A buffer structure and a constant temperature structure are installed on the buffer inner tube (9).

2. The hydraulic system for power shifting and gearbox cooling according to claim 1, characterized in that: The inner buffer tube (9) is fixedly connected to the pipe (8), and multiple communication ports (11) are opened on the periphery of the inner buffer tube (9).

3. The hydraulic system for power shifting and gearbox cooling according to claim 2, characterized in that: The connecting port (11) is connected to the pipe (8) and the cavity (10), and multiple connecting ports (11) are located at both ends of the buffer inner tube (9).

4. The hydraulic system for power shifting and gearbox cooling according to claim 1, characterized in that: The buffer structure includes a piston (12), which is slidably fitted to the inner side of the buffer inner tube (9).

5. The hydraulic system for power shifting and gearbox cooling according to claim 1, characterized in that: Both ends of the inner buffer tube (9) are equipped with limiting rings.

6. The hydraulic system for power shifting and gearbox cooling according to claim 1, characterized in that: The constant temperature structure includes a resistance wire (13), which is fixed inside the buffer inner tube (9).

7. The hydraulic system for power shifting and gearbox cooling according to claim 1, characterized in that: A safety valve (5) and a filter (6) are installed between the control valve (2) and the gear pump (4). The safety valve (5) and the filter (6) are connected to the gear pump (4) through the pipe (8) and the control valve (2).

8. The hydraulic system for power shifting and gearbox cooling according to claim 1, characterized in that: An energy storage device (7) is installed on one side of the control valve (2).

Images