Three-speed full-time four-wheel-drive hydrostatic gearbox

Abstract

The utility model belongs to the technical field of gearboxes, and particularly discloses a three-speed full-time four-wheel-drive hydrostatic gearbox which comprises a filter box, a plurality of limiting strips are arranged in the filter box, every two limiting strips are arranged on the two opposite sides in the filter box respectively, the two opposite ends of a filter screen are inserted between the limiting strips in each group respectively, and the filter screen is arranged in the filter box. A sealing plate is arranged on the filter box above the filter screen and fixed to one side of a cover plate, a plurality of protruding blocks are fixed to the same side of the cover plate and the filter box respectively, one side of the filter box is connected with an oil inlet pipe, the end, away from the filter box, of the oil inlet pipe is connected with a cold radiator, an outer frame is fixed to one side of the cold radiator, and a support is fixed in the outer frame. A connecting pipe is arranged on the side, close to the cold row, of the support, an oil pump is connected to the end of the connecting pipe, a first oil conveying pipe is arranged at the end, away from the connecting pipe, of the oil pump, the other end of the first oil conveying pipe is connected with a second oil conveying pipe, and the fan arranged on the side face of the cold row is matched with the cold row to dissipate heat of high-temperature lubricating oil.

Description

Technical Field

[0001] The utility model relates to the technical field of gearboxes, in particular to a three-speed full-time four-wheel drive hydrostatic gearbox. Background Art

[0002] Hydrostatic transmission is used to transfer power between the engine and the drive wheels. Hydrostatic transmission consists of oil pump, hydraulic motor, pipeline, etc. According to different structures, hydrostatic transmission has two types: using hydraulic motor to drive the drive axle and directly driving the wheels. The working principle is that the engine drives the oil pump to increase the pressure of the working oil in the system, and the pressure oil is sent to the pipeline, various control components and hydraulic motor. The hydraulic motor converts the working oil pressure into torque to drive the drive axle or drive wheels of the car.

[0003] However, the existing hydrostatic transmission is often at high temperature, but no heat dissipation device is provided. For example, in the utility model with patent number CN216242121U, the temperature of the internal lubricating oil will increase as the working time increases, so that the lubricating oil cannot work at a suitable temperature, resulting in the mechanical structure not being effectively lubricated. In addition, no filtering device is provided for the lubricating oil. Since the mechanical structure will generate metal debris due to friction when working, after accumulating to a certain extent, it will be mixed in the lubricating oil to reduce the adhesion of the lubricating oil, and the mechanical structure cannot be effectively lubricated. Utility Model Content

[0004] The utility model aims to provide a three-speed full-time four-wheel drive hydrostatic transmission to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a three-speed full-time four-wheel drive hydrostatic transmission, comprising a filter box, wherein a plurality of limit strips are arranged in the filter box, and each limit strip is arranged in a group of two on two opposite sides of the filter box, and the opposite ends of the filter screen are respectively inserted between each group of limit strips, and a sealing plate is arranged on the filter box above the filter screen, and the sealing plate is fixed on one side of the cover plate, and a plurality of protrusions are respectively fixed on the same side of the cover plate and the filter box, and an oil inlet pipe is connected to one side of the filter box, and an outer frame is fixed to one side of the cold row, and a bracket is fixed in the outer frame, and a fan is arranged on the side of the bracket close to the cold row, and a connecting pipe is arranged on the side of the cold row close to the oil inlet pipe, and an oil pump is connected to the end of the connecting pipe, and a first oil delivery pipe is arranged at the end of the oil pump away from the connecting pipe, and a second oil delivery pipe is connected to the other end of the first oil delivery pipe, and the fan arranged on the side of the cold row cooperates with the cold row to dissipate the high-temperature lubricating oil, and the oil pump cooperates with the connecting pipe, the first oil delivery pipe and the second oil delivery pipe to transport the cooled lubricating oil to the transmission box.

[0006] Preferably, a rotating shaft is provided on one end of the filter box away from the protrusion and close to the cover plate, a plurality of protrusions are fixed by bolts, and the cover plate is opened and closed by the protrusions and the rotating shaft, so that the filter screen can be easily replaced.

[0007] Preferably, a T-shaped oil drain pipe is provided on the side of the filter box away from the oil inlet pipe, one end of the oil drain pipe away from the filter box is connected to an oil drain bolt and the remaining end is connected to the gearbox, and the end of the oil drain pipe connected to the oil drain bolt is used to drain waste oil and is used to connect the radiator and the gearbox.

[0008] Preferably, the first oil delivery pipe and the second oil delivery pipe have L-shaped side surfaces, so as to facilitate the delivery of the cooled lubricating oil to the gearbox.

[0009] Preferably, the bracket is in a cross shape, which is convenient for placing the fan and reducing air intake obstruction.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model achieves the purpose of filtering the lubricating oil through the filter screen, the limit strip and the filter box. By accurately filtering the lubricating oil, we can effectively reduce the metal debris inside the gearbox. It reduces the situation of metal debris blocking the pipeline and prevents it from affecting the normal operation of the gearbox. The filtering process not only removes these potential obstacles, but also helps to maintain the cleanliness and fluidity of the lubricating oil, thereby ensuring the stability of the internal environment of the gearbox. It also enhances the durability of the gears inside the gearbox. Clean lubricating oil can more effectively form a protective layer between the gears and reduce direct wear between the gears.

[0012] The utility model achieves the purpose of cooling the lubricating oil through structures such as a cold row, a fan, an oil pump, a first oil pipeline and a second oil pipeline. The cooled lubricating oil not only makes the lubricating oil at a suitable working temperature, but also increases the adhesion of the lubricating oil. This is because when the temperature of the lubricating oil is too high, its viscosity will decrease, resulting in a weakened lubricating effect. Therefore, by cooling the lubricating oil through a cooling system, it can be ensured that the lubricating oil forms a stable lubricating film on the mechanical structure inside the gearbox. Lowering the temperature of the lubricating oil can also prevent the lubricating oil from oxidizing, decomposing or producing sediments due to high temperature, thereby extending the service life of the lubricating oil. At the same time, a suitable working temperature also helps to maintain the chemical stability and wear resistance of the lubricating oil, further improving the lubricating effect of the mechanical structure inside the gearbox. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the cooling device of the utility model;

[0015] Figure 3 This is a schematic diagram of the three-dimensional structure of the radiator and fan of the utility model;

[0016] Figure 4 This is a schematic diagram of the three-dimensional structure of the filter box of the utility model.

[0017] In the figure: 1. gearbox; 2. radiator; 3. outer frame; 4. bracket; 5. connecting pipe; 6. oil pump; 7. first oil pipeline; 8. filter box; 9. second oil pipeline; 10. oil inlet pipe; 11. fan; 12. cover plate; 13. sealing plate; 14. shaft; 15. bump; 16. filter screen; 17. limit strip. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] See also Figure 1-4The utility model provides a technical solution: a three-speed full-time four-wheel drive hydrostatic transmission, including a filter box 8, a plurality of limit strips 17 are arranged in the filter box 8, and the limit strips 17 are arranged in a group of two on opposite sides of the filter box 8, and the opposite ends of the filter screen 16 are respectively inserted between each group of limit strips 17, and a sealing plate 13 is arranged on the filter box 8 above the filter screen 16, and the sealing plate 13 is fixed on one side of the cover plate 12, and a plurality of protrusions 15 are fixed on the same side of the cover plate 12 and the filter box 8, and an oil inlet pipe 10 is connected to one side of the filter box 8, and the oil inlet pipe 10 is far away from the filter box 8. One end of the radiator 2 is connected to a radiator 2, one side of the radiator 2 is fixed with an outer frame 3, a bracket 4 is fixed inside the outer frame 3, a fan 11 is provided on the side of the bracket 4 close to the radiator 2, the radiator 2 is provided with a connecting pipe 5 on the side close to the oil inlet pipe 10, the end of the connecting pipe 5 is connected to an oil pump 6, the end of the oil pump 6 away from the connecting pipe 5 is provided with a first oil pipe 7, the other end of the first oil pipe 7 is connected to a second oil pipe 9, the fan 11 arranged on the side of the radiator 2 cooperates with the radiator 2 to dissipate the high-temperature lubricating oil, and the oil pump 6 cooperates with the connecting pipe 5, the first oil pipe 7 and the second oil pipe 9 to transport the cooled lubricating oil to the gearbox 1.

[0022] Furthermore, a rotating shaft 14 is provided on one end of the filter box 8 away from the protrusion 15 and close to the cover 12 , and several protrusions 15 are fixed by bolts. The cover 12 is opened and closed by the protrusions 15 and the rotating shaft 14 , so that the filter screen 16 can be easily replaced.

[0023] Furthermore, a T-shaped oil drain pipe is provided on the side of the filter box 8 away from the oil inlet pipe 10, one end of the oil drain pipe away from the filter box 8 is connected to an oil drain bolt and the remaining end is connected to the gearbox 1, and the end of the oil drain pipe connected to the oil drain bolt is used to drain waste oil and is used to connect the radiator 2 and the gearbox 1.

[0024] Furthermore, the first oil delivery pipe 7 and the second oil delivery pipe 9 have L-shaped sides, which facilitates the delivery of the cooled lubricating oil to the gearbox 1 .

[0025] Furthermore, the bracket 4 is in a cross shape, which is convenient for arranging the fan 11 and reducing air intake obstacles.

[0026] Working principle: The gearbox 1 is equipped with a filtering system, which includes a filter box 8. A plurality of limit bars 17 are arranged inside, and the limit bars 17 are arranged in pairs on the opposite sides of the filter box 8 to fix the position of the filter screen 16. A sealing plate 13 is installed above the filter screen 16, and the sealing plate 13 is fixed to one side of the cover plate 12 to enhance the sealing performance of the overall structure. A plurality of protrusions 15 are arranged on the same side of the cover plate 12 and the filter box 8, which are used to fix and facilitate the opening and closing of the cover plate 12, so as to realize the rapid replacement of the filter screen 16. To replace the filter screen 16, you only need to open the cover plate 12 to pull out the filter screen 16, then insert a new filter screen 16, and close the cover plate 12.

[0027] One side of the filter box 8 is connected to the oil inlet pipe 10, which transports the lubricating oil from the gearbox 1 to the radiator 2. The design of the radiator 2 includes an outer frame 3 and an internal bracket 4, wherein a fan 11 is installed on the side of the bracket 4 close to the radiator 2. The fan 11 works in conjunction with the radiator 2 to effectively reduce the temperature of the lubricating oil. A connecting pipe 5 is provided on the same side of the radiator 2 and the oil inlet pipe 10, and the end of the connecting pipe 5 is connected to the oil pump 6. The oil pump 6 returns the cooled lubricating oil to the gearbox 1 through the first oil delivery pipe 7 and the second oil delivery pipe 9 to ensure the smooth operation of the system. The design of the entire filtering system takes into account both efficiency and convenience of maintenance. Through the mutual cooperation of various components, the reliability and durability of the gearbox 1 under different working conditions are ensured. A T-shaped oil drain pipe is provided on the side of the filter box 8 away from the oil inlet pipe 10, one end of which is connected to the oil drain bolt, and the other end is connected to the gearbox 1. The end of the oil drain bolt can effectively discharge the waste lubricating oil and support the connection between the cooling system and the gearbox 1. The first oil delivery pipe 7 and the second oil delivery pipe 9 are designed to be L-shaped, which helps to smoothly deliver the cooled lubricating oil to the gearbox 1. The bracket 4 adopts a cross-shaped structure, which is not only convenient for installing the fan 11, but also helps to reduce the resistance when air enters, thereby enhancing the overall heat dissipation effect.

[0028] It is worth noting that the entire device is controlled by a general control device. Since the devices matched with the control device are commonly used devices and belong to existing mature technologies, their electrical connection relationships and specific circuit structures will not be described in detail here.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-speed full-time four-wheel drive hydrostatic transmission, characterized in that: The invention comprises a filter box (8), wherein a plurality of limit strips (17) are arranged in the filter box (8), and each of the limit strips (17) is arranged in a group of two on opposite sides of the filter box (8), and the opposite ends of the filter screen (16) are respectively inserted between each group of limit strips (17). A sealing plate (13) is arranged on the filter box (8) above the filter screen (16), and the sealing plate (13) is fixed on one side of a cover plate (12). A plurality of protrusions (15) are respectively fixed on the same side of the cover plate (12) and the filter box (8), and one side of the filter box (8) is connected to an oil inlet. The oil inlet pipe (10) is connected to a cooling radiator (2) at one end away from the filter box (8); an outer frame (3) is fixed to one side of the cooling radiator (2); a bracket (4) is fixed inside the outer frame (3); a fan (11) is provided on the side of the bracket (4) close to the cooling radiator (2); a connecting pipe (5) is provided on the side of the cooling radiator (2) close to the oil inlet pipe (10); an oil pump (6) is connected to the end of the connecting pipe (5); a first oil delivery pipe (7) is provided on the end of the oil pump (6) away from the connecting pipe (5); and the other end of the first oil delivery pipe (7) is connected to a second oil delivery pipe (9).

2. A three-speed full-time four-wheel drive hydrostatic transmission according to claim 1, characterized in that: A rotating shaft (14) is provided on one end of the filter box (8) which is away from the protrusion (15) and close to the cover plate (12), and a plurality of protrusions (15) are fixed together by bolts.

3. A three-speed full-time four-wheel drive hydrostatic transmission according to claim 1, characterized in that: A T-shaped oil drain pipe is provided on the side of the filter box (8) away from the oil inlet pipe (10); one end of the oil drain pipe away from the filter box (8) is connected to an oil drain bolt and the remaining end is connected to the gearbox (1).

4. A three-speed full-time four-wheel drive hydrostatic transmission according to claim 1, characterized in that: The side surfaces of the first oil delivery pipe (7) and the second oil delivery pipe (9) are L-shaped.

5. A three-speed full-time four-wheel drive hydrostatic transmission according to claim 1, characterized in that: The support (4) is in a cross shape.

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