External cooling system structure of manual transmission

Abstract

The utility model provides an external cooling system structure of a manual transmission. The external cooling system structure of the manual gearbox comprises the manual gearbox and a cooling system, the oil inlet pipe is installed on the front face of the manual gearbox, the oil return pipe is installed on the front face of the manual gearbox, the connecting pipes are installed at the other ends of the oil return pipe and the oil inlet pipe, the pipe hoops are arranged at the other ends of the connecting pipes, the filter is installed on one side of the manual gearbox, and the filter is installed on the other side of the manual gearbox. A heat exchanger is mounted on one side of the manual gearbox; the water inlet pipe is installed at an inlet of the heat exchanger through an L-shaped rubber pipe. According to the external cooling system structure of the manual transmission, the external cooling system is additionally arranged, the gear oil temperature of the transmission is reduced in a water cooling mode, the oil temperature of the manual transmission can be kept below 100 DEG C even if the environment temperature is high, and the use reliability of the manual transmission is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of external cooling systems for gearboxes, in particular to an external cooling system structure for a manual gearbox. Background Art

[0002] A manual transmission is a speed-changing device that is used to change the speed and torque transmitted from the engine to the drive wheels, allowing the vehicle to obtain different traction and speeds under various operating conditions such as starting from a standstill, climbing a hill, turning, and accelerating, while allowing the engine to operate within a more favorable operating range.

[0003] Off-road wide-body dump trucks equipped with manual transmissions mostly operate under heavy-load uphill conditions. When the heavy-load uphill conditions continue, especially when the ambient temperature is high in summer, the gear oil temperature inside the transmission will be too high.

[0004] Currently, most off-road wide-body dump trucks have manual transmissions and are not equipped with a transmission cooling system. Excessively high oil temperatures can cause the oil viscosity to decrease, exacerbating the friction and wear of internal gears. Excessively high oil temperatures can also cause aging of rubber seals and premature oil leakage.

[0005] Therefore, it is necessary to provide a manual transmission external cooling system structure to solve the above technical problems. Utility Model Content

[0006] The utility model provides a manual transmission external cooling system structure, which solves the problem that a dump truck equipped with a manual transmission lacks a transmission cooling system, and the oil temperature is too high during the uphill load process, which leads to a decrease in oil viscosity, accelerated gear friction and rubber seal aging, resulting in oil leakage.

[0007] In order to solve the above technical problems, the manual transmission external cooling system structure provided by the utility model includes: a manual transmission; an oil inlet pipe, the oil inlet pipe is installed on the front of the manual transmission, the front of the manual transmission is installed with an oil return pipe, the other ends of the return pipe and the oil inlet pipe are both installed with connecting pipes, the other ends of the connecting pipes are both provided with pipe clamps, a filter is installed on one side of the manual transmission, and a heat exchanger is installed on one side of the manual transmission; a water inlet pipe, the water inlet pipe is installed at the inlet of the heat exchanger through an L-shaped hose, and the outlet of the heat exchanger is installed with a water return pipe through an L-shaped hose.

[0008] Preferably, the heat exchanger and the filter are fixed to the manual transmission body via a heat exchanger bracket, and two water pipe clamps are installed on the top of the manual transmission.

[0009] Preferably, the water inlet pipe and the water return pipe both adopt a rubber hose plus a steel pipe structure, the heat exchanger water inlet and outlet interfaces use clamps to fix the L-shaped rubber hose, and the other end of the L-shaped rubber hose is connected to the water inlet pipe and the water return pipe using a clamp.

[0010] Compared with the related art, the manual transmission external cooling system structure provided by the utility model has the following beneficial effects:

[0011] The utility model provides a manual transmission external cooling system structure. In order to prevent the oil temperature from being too high during the uphill loading process of a dump truck equipped with a manual transmission, a built-in oil pump is first installed inside the manual transmission, and the gear oil inside the manual transmission is sent to the filter through an oil inlet pipe and a connecting pipe. The hot oil filtered by the filter enters the interior of the heat exchanger. In this process, the engine water pump sends the coolant from the warm air return port through the water inlet pipe into the interior of the heat exchanger, and reduces the gear oil temperature by heat exchange. The gear oil then returns to the engine warm air inlet through the water return pipe, and circulates back and forth. The gear oil cooled by the heat exchanger returns to the interior of the manual transmission through the oil return pipe, and circulates back and forth. By adding an external cooling system, the gear oil temperature of the transmission is reduced by water cooling, and the manual transmission oil temperature can be kept below 100°C even when the ambient temperature is high, thereby improving the reliability of the manual transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic structural diagram of a first embodiment of an external cooling system structure for a manual transmission provided by the utility model;

[0013] Figure 2 Provided for the utility model Figure 1 An enlarged view of point A is shown;

[0014] Figure 3 A schematic structural diagram of a second embodiment of the manual transmission external cooling system structure provided by the utility model;

[0015] Figure 4 A structural schematic diagram of a filter bucket is provided for the utility model;

[0016] Figure 5 The utility model provides a structural schematic diagram of a sealing plug.

[0017] Numbers in the figure: 1. Manual transmission, 2. Oil inlet pipe, 3. Oil return pipe, 4. Connecting pipe, 5. Pipe clamp, 6. Filter, 7. Water inlet pipe, 8. Water return pipe, 9. Water pipe clamp, 10. L-shaped hose, 11. Heat exchanger, 12. First fixed pipe, 13. Filter box, 14. Buckle, 15. Second fixed pipe, 16. Mounting bolt, 17. Flange, 18. Sealing cover, 19. Fixing bolt, 20. Filter bucket, 21. Drain hole, 22. Sealing plug. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0019] Please refer to Figure 1 , Figure 2 ,in, Figure 1 A schematic structural diagram of a first embodiment of an external cooling system structure for a manual transmission provided by the utility model; Figure 2 Provided for the utility model Figure 1 An enlarged view of point A is shown. The structure of the manual transmission external cooling system includes: a manual transmission 1;

[0020] An oil inlet pipe 2, the oil inlet pipe 2 is installed on the front of the manual gearbox 1, an oil return pipe 3 is installed on the front of the manual gearbox 1, a connecting pipe 4 is installed on the other end of the oil return pipe 3 and the oil inlet pipe 2, a pipe clamp 5 is provided on the other end of the connecting pipe 4, a filter 6 is installed on one side of the manual gearbox 1, and a heat exchanger 11 is installed on one side of the manual gearbox 1;

[0021] A water inlet pipe 7, the water inlet pipe 7 is installed at the inlet of the heat exchanger 11 through an L-shaped hose 10, and a return pipe 8 is installed at the outlet of the heat exchanger 11 through the L-shaped hose 10;

[0022] The other end of the connecting pipe 4 connected to the oil inlet pipe 2 is connected to the filter 6 through the pipe clamp 5, and the other end of the connecting pipe 4 connected to the oil return pipe 3 is connected to the oil outlet of the heat exchanger 11 through the pipe clamp 5. The oil inlet pipe 2 and the oil return pipe 3 use a whole rubber hose. The oil inlet pipe 2 is connected to the oil outlet of the manual transmission 1 and the filter 6. The oil return pipe 3 is connected to the oil outlet of the heat exchanger 11 and the oil inlet of the manual transmission 1. The oil pipe is fixed to the lower end of the heat exchanger 11 bracket through a pipe clamp. The oil inlet of the heat exchanger 11 is connected to the outlet of the filter 6. A built-in oil pump is installed inside the manual transmission 1 to deliver the internal gear oil of the manual transmission 1 to the inside of the filter 6 through the oil inlet pipe 2 and the connecting pipe 4.

[0023] The heat exchanger 11 and the filter 6 are fixed to the manual transmission 1 body through the heat exchanger 11 bracket, and two water pipe clamps 9 are installed on the top of the manual transmission 1;

[0024] The advantage of the external cooling system structure is that it does not use other space structures and can be arranged only on the gearbox. The installation of the heat exchanger 11 and the filter 6 is shown in FIG. Figure 1 The water inlet pipe 7 and the water return pipe 8 are fixed to the gearbox housing through water pipe clamps to avoid excessive pipe vibration. For details, refer to Figure 2 The rear cover of the manual transmission 1 is fixed to the heat exchanger 11 bracket by bolts, the heat exchanger 11 is fixed on the heat exchanger 11 bracket by bolts, and the filter 6 is fixed under the heat exchanger 11 by bolts.

[0025] The water inlet pipe 7 and the water return pipe 8 are both in the form of a rubber pipe plus a steel pipe. The water inlet and outlet interfaces of the heat exchanger 11 are fixed with an L-shaped rubber pipe 10 by a clamp, and the other end of the L-shaped rubber pipe 10 is connected to the water inlet pipe 7 and the water return pipe 8 by a clamp.

[0026] The advantages of the water inlet pipe 7 and the water return pipe 8 are that the rubber hose ensures installation and the steel pipe is easy to fix.

[0027] The working principle of the manual transmission external cooling system structure provided by the utility model is as follows:

[0028] First, a built-in oil pump is installed inside the manual transmission 1, and the gear oil inside the manual transmission 1 is sent to the filter 6 through the oil inlet pipe 2 and the connecting pipe 4. The hot oil filtered by the filter 6 enters the heat exchanger 11. In this process, the engine water pump sends the coolant from the warm air return port through the water inlet pipe 7 to the heat exchanger 11, and reduces the gear oil temperature by heat exchange. Then, the gear oil returns to the engine warm air inlet through the return pipe 8, and the cycle is repeated. The gear oil cooled by the heat exchanger 11 returns to the manual transmission 1 through the return oil pipe 3, and the cycle is repeated.

[0029] Compared with the related art, the manual transmission external cooling system structure provided by the utility model has the following beneficial effects:

[0030] In order to prevent the dump truck equipped with a manual transmission from having an oil temperature that is too high during the uphill load-carrying process, a built-in oil pump is first installed inside the manual transmission 1 to send the gear oil inside the manual transmission 1 to the filter 6 through the oil inlet pipe 2 and the connecting pipe 4. The hot oil filtered by the filter 6 enters the heat exchanger 11. During this process, the engine water pump sends the coolant from the warm air return port through the water inlet pipe 7 into the heat exchanger 11, and reduces the gear oil temperature by heat exchange. The coolant then returns to the engine warm air inlet through the water return pipe 8, and circulates back and forth. The gear oil cooled by the heat exchanger 11 returns to the manual transmission 1 through the oil return pipe 3, and circulates back and forth. This structure increases an external cooling system and uses water cooling to reduce the gear oil temperature of the transmission. Even when the ambient temperature is high, the oil temperature of the manual transmission 1 can be kept below 100°C, thereby improving the reliability of the manual transmission 1.

[0031] Second embodiment

[0032] Please refer to Figure 3-Figure 4 - Figure 5 , Figure 3 A schematic structural diagram of a second embodiment of the manual transmission external cooling system structure provided by the utility model; Figure 4 A structural schematic diagram of a filter bucket is provided for the utility model; Figure 5 The utility model provides a structural schematic diagram of the sealing plug. Based on the manual transmission external cooling system structure provided by the first embodiment of the present application, the second embodiment of the present application proposes another manual transmission external cooling system structure. The second embodiment is only a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0033] Specifically, the structure of the manual transmission external cooling system provided in the second embodiment of the present application is different in that the other end of the water inlet pipe 7 is installed with a second fixing pipe 15 through a flange 17 and a mounting bolt 16, and the other end of the second fixing pipe 15 is fixedly connected with a filter box 13;

[0034] One end of the second fixed pipe 15 also has a flange 17. The connection method of the water inlet pipe 7 and the second fixed pipe 15 is as shown in FIG. Figure 3 .

[0035] A filter hopper 20 is installed inside the filter box 13, and drainage holes 21 are provided on the outer surface of the filter hopper 20;

[0036] The inlet of the filter bucket 20 faces one side of the first fixed pipe 12 , and the filter bucket 20 can filter the coolant entering the filter box 13 .

[0037] The other side of the filter box 13 is fixedly connected with a first fixed pipe 12, the top of the filter box 13 is installed with a sealing cover 18 through a fixing bolt 19, the bottom of the sealing cover 18 is installed with a sealing plug 22, and the top of the sealing cover 18 is installed with a buckle 14;

[0038] The sealing plug 22 is inserted into the interior of the filter box 13 and contacts the top of the inlet of the filter bucket 20. The other end of the first fixed pipe 12 is also installed with a flange 17 to facilitate connection with the engine coolant pipeline.

[0039] Compared with the related art, the manual transmission external cooling system structure provided by the utility model has the following beneficial effects:

[0040] In order to prevent impurities in the coolant from entering the heat exchanger 11, a filter box 13 is installed at the inlet end of the water inlet pipe 7 through the flange 17 and the second fixed pipe 15, and a filter bucket 20 with a drainage hole 21 is installed inside the filter box 13, and the opening of the filter bucket 20 is facing the direction of the liquid inlet, and a sealing cover 18 is installed on the top of the filter box 13 through a sealing plug 22. The sealing cover 18 is fixed on the filter box 13 by fixing bolts 19. In actual use, the coolant will enter the interior of the filter box 13 from the first fixed pipe 12, and the impurities will be blocked when filtering the coolant through the filter bucket 20, and the coolant will be discharged from the drainage hole 21, and then flow into the interior of the water inlet pipe 7 through the second fixed pipe 15. The staff only needs to open the sealing cover 18 regularly to clean the filter bucket 20. Through this structure, the coolant entering the heat exchanger 11 can be filtered to prevent impurities from flowing into the heat exchanger 11 and causing blockage, which is beneficial to improving the working stability of the heat exchanger 11.

[0041] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A manual transmission external cooling system structure, characterized in that: include: Manual transmission; An oil inlet pipe, the oil inlet pipe is installed on the front of the manual gearbox, an oil return pipe is installed on the front of the manual gearbox, the other ends of the oil return pipe and the oil inlet pipe are both installed with connecting pipes, the other ends of the connecting pipes are both provided with pipe clamps, a filter is installed on one side of the manual gearbox, and a heat exchanger is installed on one side of the manual gearbox; A water inlet pipe is installed at the inlet of the heat exchanger through an L-shaped hose, and a return pipe is installed at the outlet of the heat exchanger through an L-shaped hose.

2. The manual transmission external cooling system structure according to claim 1, characterized in that: The heat exchanger and the filter are fixed on the manual transmission body through a heat exchanger bracket, and two water pipe clamps are installed on the top of the manual transmission.

3. The manual transmission external cooling system structure according to claim 1, characterized in that: The water inlet pipe and the water return pipe both adopt the structure of a rubber hose and a steel pipe. The water inlet and outlet interfaces of the heat exchanger use clamps to fix the L-shaped rubber hose, and the other end of the L-shaped rubber hose is connected to the water inlet pipe and the water return pipe using a clamp.

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