Temperature-controllable wet brake forced cooling system

Abstract

The utility model discloses a temperature-controllable wet brake forced cooling system, which relates to the technical field of wet brakes and comprises a forced cooling oil tank, a front axle synchronous diverter valve and a rear axle synchronous diverter valve. A system safety overflow valve is installed at the output end of the forced cooling system gear pump, a radiator assembly is arranged at the output end of the system safety overflow valve, a rear brake is installed at the output end of the radiator assembly, and the front and rear axle synchronous diverter valve is arranged at one end of the rear brake. According to the temperature-controllable wet brake forced cooling system, oil in the forced cooling oil tank can be shunted to enter the interiors of the oil backward brake and the front axle brake through the design of the front and rear axle synchronous diverter valve, so that a friction plate I and a friction plate II are prevented from being burnt out due to friction heating; therefore, the braking efficiency of the rear brake and the front axle brake is ensured, and the safety of the vehicle in use is further ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of wet brakes, in particular to a temperature-controllable wet brake forced cooling system. Background Art

[0002] The full name of wet brake is closed multi-disc oil-cooled brake (abbreviated as wet brake). Wet brake can be divided into two categories according to different structural forms, one is non-independent type and the other is independent type. Non-independent type can be divided into: in-machine (semi-axle) brake (i.e. Inboard brake), planetary brake (i.e. PLCB brake); independent type is divided into: hydraulic brake, spring release brake (i.e. LCB brake), spring brake, hydraulic release brake (POSI-STOP brake). Existing wet brakes are all multi-friction plate full-disc brakes, mainly composed of outer friction plate, inner friction plate, pressure plate, piston, fixed element, rotating element, return spring and other parts. The outer friction plate and the fixed element are connected by spline, the inner friction plate and the rotating element are connected by spline, and the inner and outer friction plates are arranged alternately.

[0003] For example, the utility model with application number CN201811339792.X provides a gearbox wet brake test fixture, in which the larger end of the motor rotor shaft is connected to the bracket, the smaller end of the motor rotor shaft passes through the motor rotor shaft installation perforation of the box body, and a gap is left between the outer side of the smaller end of the motor rotor shaft and the inner wall of the motor rotor shaft installation perforation of the box body to form a low-pressure lubricating oil channel, the middle part of the motor rotor shaft is connected to the box body, and a brake installation space is formed between the larger end of the motor rotor shaft and the closed end of the box body, the open end of the box body is fixed on the bracket, one end of the oil distribution shaft passes through the oil distribution shaft installation perforation of the bracket, and the gap is sleeved in the inner cavity of the motor rotor shaft, and the oil distribution shaft is fixed on the bracket, and the oil distribution shaft and the motor rotor shaft are connected by a needle bearing. The gearbox wet brake test fixture of this utility model has a simple structure, few tooling parts, convenient installation and disassembly, and relatively accurate test data, but the cooling oil delivery efficiency is insufficient when the wet brake is used, and it is difficult to provide a good cooling effect.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a temperature-controllable wet brake forced cooling system is proposed. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a temperature-controllable wet brake forced cooling system, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a temperature-controllable wet brake forced cooling system, including a forced cooling oil tank and a front and rear axle synchronous diverter valve, a forced cooling system gear pump is installed at one end of the forced cooling oil tank, and a system safety overflow valve is installed at the output end of the forced cooling system gear pump, a radiator assembly is provided at the output end of the radiator assembly, a rear brake is installed at the output end of the radiator assembly, the front and rear axle synchronous diverter valve is provided at one end of the rear brake, and a front axle brake is installed at the output end of the front and rear axle synchronous diverter valve.

[0007] Furthermore, a cooling oil chamber seal A- is provided on the outside of the front axle brake, and a friction plate 1 is installed at one end of the front axle brake near the cooling oil chamber seal A-.

[0008] Furthermore, a brake piston 1 is provided on the outer side of the friction plate 1, and a cooling oil chamber oil seal B 1 is installed on the inner side of the front axle brake away from the cooling oil chamber oil seal A 1.

[0009] Furthermore, a forced cooling oil outlet is provided at the rear side of the front axle brake, and a forced cooling oil inlet is provided at the bottom of the rear side of the front axle brake.

[0010] Furthermore, a second forced cooling oil outlet is provided at the upper rear end of the rear brake, and a second forced cooling oil inlet is provided at the lower rear end of the rear brake.

[0011] Furthermore, a cooling oil chamber seal A2 is provided on the outer side of the rear brake, and a friction plate 2 is installed on the outer side of the cooling oil chamber seal A2.

[0012] Furthermore, a brake piston 2 is provided on one side of the friction plate 2, and a parking piston is installed on one side of the brake piston 2.

[0013] Furthermore, a cooling oil chamber oil seal B2 is provided inside the rear brake, and the rear brake is provided with two sets.

[0014] Furthermore, two groups of front axle brakes are provided, and a front and rear axle synchronous diverter valve is connected between the rear brake and the front axle brake.

[0015] Furthermore, the two groups of front axle brakes are connected via pipes, and the two groups of rear brakes are connected via pipes.

[0016] The utility model provides a temperature-controllable wet brake forced cooling system, which has the following features:

[0017] Beneficial effects:

[0018] 1. The temperature-controllable wet brake forced cooling system, through the design of the front and rear axle synchronous diverter valve, enables the oil in the forced cooling oil tank to be diverted into the rear brake and the front axle brake, preventing the friction plate 1 and the friction plate 2 from being burned out due to friction heat, thereby ensuring the braking efficiency of the rear brake and the front axle brake, and further ensuring the safety of the vehicle when in use. In addition, the friction plate 1 and the friction plate 2 are made of metal film material. The metal film material is characterized by high strength, hardness and elastic modulus, can withstand high load pressure, and has a stable friction coefficient, so that the structural performance of the entire wet brake is stable when in use, ensuring the safety of the wet brake when in use.

[0019] 2. The temperature-controllable wet brake forced cooling system, through the system safety relief valve design, can play a safety protection role when the oil in the forced cooling tank flows to the rear brake and front axle brake areas. When the system pressure exceeds the specified value, the system safety relief valve will open and discharge part of the gas in the system into the atmosphere, so that the system pressure does not exceed the allowable value, thereby ensuring that the system will not cause accidents due to excessive pressure, thereby improving the stability and safety performance of the entire wet brake forced cooling system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the principle structure of a temperature-controllable wet brake forced cooling system of the utility model;

[0021] Figure 2 This is a schematic diagram of the front axle brake structure of a temperature-controllable wet brake forced cooling system of the utility model;

[0022] Figure 3 It is a schematic diagram of the cross-sectional structure of a front axle brake of a temperature-controllable wet brake forced cooling system of the utility model;

[0023] Figure 4 It is a schematic diagram of the rear view structure of the front axle brake of a temperature-controllable wet brake forced cooling system of the utility model;

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of a front axle brake of a temperature-controllable wet brake forced cooling system of the utility model;

[0025] Figure 6 This is a schematic diagram of the rear brake structure of a temperature-controllable wet brake forced cooling system of the utility model;

[0026] Figure 7 It is a schematic diagram of the cross-sectional structure of a rear brake of a temperature-controllable wet brake forced cooling system of the utility model;

[0027] Figure 8The utility model is a three-dimensional structural schematic diagram of a rear brake of a temperature-controllable wet brake forced cooling system.

[0028] In the figure: 1. forced cooling oil tank; 2. forced cooling system gear pump; 3. system safety overflow valve; 4. radiator assembly; 5. rear brake; 6. front and rear axle synchronous diverter valve; 7. front axle brake; 8. cooling oil chamber oil seal A1; 9. friction plate 1; 10. brake piston 1; 11. cooling oil chamber oil seal B1; 12. forced cooling oil outlet 1; 13. forced cooling oil inlet 1; 14. forced cooling oil outlet 2; 15. forced cooling oil inlet 2; 16. cooling oil chamber oil seal A2; 17. friction plate 2; 18. brake piston 2; 19. parking piston; 20. cooling oil chamber oil seal B2. DETAILED DESCRIPTION

[0029] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, the utility model provides a technical solution: a temperature-controllable wet brake forced cooling system, including a forced cooling oil tank 1, a forced cooling system gear pump 2, a system safety overflow valve 3, a radiator assembly 4, a rear brake 5, a front and rear axle synchronous diverter valve 6, a front axle brake 7, a cooling oil chamber oil seal A-8, a friction plate-9, a brake piston-10, a cooling oil chamber oil seal B-11, a forced cooling oil outlet-12, a forced cooling oil inlet-13, a forced cooling oil outlet-214, a forced cooling oil inlet-215, a cooling oil chamber oil seal A-16, a friction plate-217, a brake piston-218, a parking piston-19 and a cooling oil chamber oil seal B-20. A forced cooling system gear pump 2 is installed at one end of the forced cooling oil tank 1, and a forced cooling system gear pump 2 is installed at one end of the forced cooling oil tank 1. A system safety overflow valve 3 is installed at the output end of the gear pump 2 of the forced cooling system. The design of the forced cooling system gear pump 2 can transport the cooling oil inside the forced cooling oil tank 1 and increase the pressure, thereby improving the cooling oil delivery efficiency. A radiator assembly 4 is provided at the output end of the system safety overflow valve 3. The design of the radiator assembly 4 transfers the cooling oil to the cooling water tank for heat dissipation. The above operation is used to control the temperature of the cooling oil. A rear brake 5 is installed at the output end of the radiator assembly 4. A cooling oil chamber oil seal B20 is provided on the inner side of the rear brake 5, and two groups of rear brakes 5 are provided. A cooling oil chamber oil seal A216 is provided on the outer side of the rear brake 5, and a friction plate 217 is installed on the outer side of the cooling oil chamber oil seal A216. A brake piston 18 is provided on one side of 17, and a parking piston 19 is installed on one side of the brake piston 18. A forced cooling oil outlet 14 is provided on the upper end of the rear side of the rear brake 5, and a forced cooling oil inlet 15 is provided on the lower end of the rear side of the rear brake 5. The design of the forced cooling oil outlet 14 and the forced cooling oil inlet 15 allows the cooling oil to circulate inside the rear brake 5. The cooling oil circulating in the rear brake 5 can take away the heat of the rear brake 5 during operation, ensuring the stable use of the rear brake 5 while extending the service life of the rear brake 5. The front and rear axle synchronous diverter valve 6 is provided at one end of the rear brake 5, and the front axle brake 7 is installed on the output end of the front and rear axle synchronous diverter valve 6. The two groups of front axle brakes 7 are connected The two groups of rear brakes 5 are connected through pipelines. Two groups of front axle brakes 7 are provided. A front and rear axle synchronous diverter valve 6 is connected between the rear brake 5 and the front axle brake 7. The design of the front and rear axle synchronous diverter valve 6 allows the oil in the forced cooling oil tank 1 to be diverted into the oil-toward rear brake 5 and the front axle brake 7, preventing the friction plate 1 9 and the friction plate 2 17 from being burned due to friction heat, thereby ensuring the braking efficiency of the rear brake 5 and the front axle brake 7, and further ensuring the safety of the vehicle when in use. A cooling oil chamber oil seal A-8 is provided on the outside of the front axle brake 7, and a friction plate 9 is installed at one end of the front axle brake 7 near the cooling oil chamber oil seal A-8. Through the design of the system safety overflow valve 3,It can play a safety protection role when the oil in the forced cooling oil tank 1 flows to the rear brake 5 and the front axle brake 7 area. When the system pressure exceeds the specified value, the system safety overflow valve 3 is opened to discharge part of the gas in the system into the atmosphere so that the system pressure does not exceed the allowable value, thereby ensuring that the system does not cause accidents due to excessive pressure, so that the stability and safety performance of the entire wet brake forced cooling system are improved. The friction plate 1 9 and the friction plate 2 17 are made of metal film material. The metal film material is characterized by high strength, hardness and elastic modulus, can withstand high load pressure, and has a stable friction coefficient, so that the structural performance of the entire wet brake is stable when in use, ensuring the safety of the wet brake when in use.

[0031] like Figure 1 and Figure 4 As shown, a brake piston 10 is provided on the outer side of the friction plate 9, a cooling oil chamber seal B-11 is installed on the side of the front axle brake 7 away from the cooling oil chamber seal A-8, a forced cooling oil outlet 12 is provided on the rear side of the front axle brake 7, and a forced cooling oil inlet 13 is provided on the rear bottom of the front axle brake 7. The design of the forced cooling oil outlet 12 and the forced cooling oil inlet 13 allows the cooling oil to circulate in the front axle brake 7, and the circulated cooling oil takes away the temperature generated during the operation of the front axle brake 7, thereby ensuring the stable use of the front axle brake 7 and extending the service life of the front axle brake 7 to a certain extent.

[0032] In summary, if Figure 1-Figure 8As shown, the temperature-controllable wet brake forced cooling system, the working principle of the wet brake braking system is to use the mutual friction between the non-rotating element connected to the body (or frame) and the rotating element connected to the wheel (or drive shaft) to prevent the rotation or rotation tendency of the wheel. When in use, the forced cooling system gear pump 2 is designed to transport the cooling oil inside the forced cooling oil tank 1 and increase the pressure to improve the transmission efficiency of the cooling oil. Then, the system safety overflow valve 3 is designed to allow the oil in the forced cooling oil tank 1 to be pumped to the rear brake 5 and the front brake 5. When the system pressure exceeds the specified value, the system safety relief valve 3 is opened to discharge part of the gas in the system into the atmosphere, so that the system pressure does not exceed the allowable value, thereby ensuring that the system does not cause accidents due to excessive pressure, so that the stability and safety performance of the entire wet brake forced cooling system are improved. In addition, through the design of the front and rear axle synchronous diverter valve 6, the oil in the forced cooling oil tank 1 can be diverted into the rear brake 5 and the front axle brake 7, preventing the friction plate 1 9 and the friction plate 2 17 from being damaged due to friction. Heat is generated and burned, thereby ensuring the braking efficiency of the rear brake 5 and the front axle brake 7, and further ensuring the safety of the vehicle when in use. The friction plate 1 9 and the friction plate 2 17 are made of metal film material. The metal film material is characterized by high strength, hardness and elastic modulus, can withstand high load pressure, and has a stable friction coefficient, so that the structural performance of the entire wet brake is stable when in use, ensuring the safety of the wet brake when in use. Secondly, the design of the forced cooling oil outlet port 2 14 and the forced cooling oil inlet port 2 15 allows the cooling oil to circulate inside the rear brake 5. The cooling oil circulating in the rear brake 5 can take away the heat when the rear brake 5 is in operation, ensuring the stable use of the rear brake 5 while extending the service life of the rear brake 5. Finally, the design of the forced cooling oil outlet port 12 and the forced cooling oil inlet port 13 allows the cooling oil to circulate in the front axle brake 7. The circulating cooling oil takes away the temperature generated when the front axle brake 7 is in operation, ensuring the stable use of the front axle brake 7 while also extending the service life of the front axle brake 7 to a certain extent.

[0033] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A temperature-controllable wet brake forced cooling system, comprising a forced cooling oil tank (1) and a front and rear axle synchronous diverter valve (6), characterized in that: A forced cooling system gear pump (2) is installed at one end of the forced cooling oil tank (1), and a system safety overflow valve (3) is installed at the output end of the forced cooling system gear pump (2), a radiator assembly (4) is arranged at the output end of the system safety overflow valve (3), a rear brake (5) is installed at the output end of the radiator assembly (4), the front and rear axle synchronous diverter valve (6) is arranged at one end of the rear brake (5), and a front axle brake (7) is installed at the output end of the front and rear axle synchronous diverter valve (6).

2. A temperature-controllable wet brake forced cooling system according to claim 1, characterized in that: A cooling oil chamber oil seal A-(8) is arranged inside and outside the front axle brake (7), and a friction plate-(9) is installed at one end of the front axle brake (7) close to the cooling oil chamber oil seal A-(8).

3. A temperature-controllable wet brake forced cooling system according to claim 2, characterized in that: A brake piston (10) is provided on the outer side of the friction plate (9), and a cooling oil chamber oil seal (11) is installed on the inner side of the front axle brake (7) away from the cooling oil chamber oil seal (8).

4. A temperature-controllable wet brake forced cooling system according to claim 1, characterized in that: A forced cooling oil outlet (12) is provided on the rear side of the front axle brake (7), and a forced cooling oil inlet (13) is provided on the rear bottom of the front axle brake (7).

5. A temperature-controllable wet brake forced cooling system according to claim 1, characterized in that: The rear upper end of the rear brake (5) is provided with a second forced cooling oil outlet (14), and the rear lower end of the rear brake (5) is provided with a second forced cooling oil inlet (15).

6. A temperature-controllable wet brake forced cooling system according to claim 1, characterized in that: The rear brake (5) is provided with a cooling oil chamber oil seal A2 (16) inside and outside, and a friction plate 2 (17) is installed outside the cooling oil chamber oil seal A2 (16).

7. A temperature-controllable wet brake forced cooling system according to claim 6, characterized in that: A brake piston 2 (18) is arranged on one side of the friction plate 2 (17), and a parking piston (19) is installed on one side of the brake piston 2 (18).

8. The temperature-controllable wet brake forced cooling system according to claim 1, characterized in that: A cooling oil chamber oil seal B2 (20) is arranged inside the rear brake (5), and the rear brake (5) is provided with two groups.

9. A temperature-controllable wet brake forced cooling system according to claim 1, characterized in that: The front axle brake (7) is provided with two groups, and a front and rear axle synchronous flow dividing valve (6) is connected between the rear brake (5) and the front axle brake (7).

10. The temperature-controllable wet brake forced cooling system according to claim 1, characterized in that: The two sets of front axle brakes (7) are connected via pipes, and the two sets of rear brakes (5) are connected via pipes.

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