Brake shoe circulating cooling system for vehicle

Abstract

The utility model discloses a brake shoe circulating cooling system for a vehicle, which relates to the technical field of brake cooling and comprises a brake bottom plate disc, a brake wheel drum, an inner ring wave-shaped friction plate, an inner ring wave hollow shoe, an outer ring wave hollow shoe, a liquid storage container and the like. The brake cam rotates to drive the inner ring wave hollow shoe and the outer ring wave hollow shoe to be opened outwards, and meanwhile the concave-convex heat dissipation inclined grooves in the wheel drum increase the air flow speed to achieve the brake function and the enhanced heat dissipation function. Cooling liquid is driven by the circulating water pump to conduct internal circulation cooling in the pressurizing pipeline, the backflow pipeline and a cavity of the inner and outer ring wave hollow shoe, and therefore the damage of a spraying cooling method to the wheel drum is overcome. The liquid storage container achieves the control function of the circulating cooling process by adjusting the pressure adjusting valve and turning on the circulating switch, and achieves the heat dissipation cooling function by air cooling heat dissipation of the heat dissipation water tank through the circulating water pump.

Description

Technical Field

[0001] The utility model relates to the technical field of brake cooling, in particular to a brake shoe circulation cooling system for a vehicle. Background Art

[0002] At present, the main reasons for overheating of vehicle brake systems are: mountain roads are long and winding, and in order to control the speed, the brakes are frequently used. At the same time, the friction between the expanding brake shoe and the rotating brake drum will generate excessive temperature, and the excessive temperature is directly transmitted to the wheel hub, wheel drum and rim, causing the brake drum to overheat, resulting in vehicle loss of control, wheel drum explosion, tire flash fire, and bearing annealing damage. For the problem of overheating of vehicle brake systems, the more common and effective solution is to use a spray system to directly cool the wheel drum.

[0003] Freight vehicles usually move across provinces, and they need a brake shoe circulation cooling system that can reduce the risk of brake drum bursting and winter icing and can adapt to most vehicle models to solve the shortcomings of existing brake cooling systems.

[0004] For example, the patent with publication number CN105626727A provides a liquid-cooled drum brake with a coolant circulation control system; in this solution, the friction plate is fixed on the outer arc surface of the air-cooled brake shoe, and the air-cooled brake drum is only limited in transferring high-temperature heat energy by the heat transfer plate and the heat transfer plate bolts. Moreover, since the contact area between the cooling tube and the liquid-cooled brake shoe is limited, the cooling effect is also very limited; at the same time, in this solution, the height of the friction plate and the heat transfer plate is consistent. Affected by the width of the heat transfer plate, the friction coefficient of the contact area between the friction plate and the air-cooled brake drum becomes smaller, which directly affects the braking distance and effect. Utility Model Content

[0005] The purpose of the utility model is to provide a brake shoe circulation cooling system for vehicles, aiming to develop an effective brake cooling method, better solve the problem of high-temperature heat dissipation, ensure the safety of vehicles on mountain roads, and avoid serious traffic accidents caused by vehicle loss of control due to slippery or icy roads.

[0006] In view of the above technical problems, the technical solution adopted by the utility model is: a brake shoe circulating cooling system for a vehicle, comprising a brake base plate disc, a brake wheel drum, an inner ring corrugated friction plate, an inner and outer ring corrugated hollow shoe, a return tension spring, a brake cam, a heat dissipation water tank, a circulating water pump, a liquid storage container, and a front and rear axle of the vehicle; brake mounting holes are provided on the rear axle and the front axle of the vehicle; the brake base plate disc is fixedly connected to the brake mounting holes of the rear axle of the vehicle and the brake mounting holes of the front axle of the vehicle respectively; the brake wheel drum is hinged to the rear axle of the vehicle and the brake base plate disc respectively; the two ends of the return tension spring are fixedly mounted on the two inner and outer ring corrugated hollow shoes respectively; a boost pipe and a return pipe are provided on the circulating water pump; the boost pipe is fixedly connected to the inner and outer ring corrugated hollow shoe; the return pipe is fixedly connected to the inner and outer ring corrugated hollow shoe; a brake wheel drum is provided on the inner arc surface Inner ring corrugated friction plate; the material of the inner ring corrugated friction plate is insulating material; the inner ring corrugated friction plate is used to increase the contact area and braking effect with the inner and outer ring corrugated hollow shoes; the inner and outer ring corrugated hollow shoes are provided with eccentric support pins and cooling cavities; the inner and outer ring corrugated hollow shoes are hinged to the inner side of the brake base plate disc through the eccentric support pins; cooling liquid is provided in the cooling cavity; the cooling liquid is automobile coolant; the cooling cavity and the cooling liquid are used to absorb and take away heat; the brake cam is hinged to the brake base plate disc; the brake cam is also in friction matching contact with the inner and outer ring corrugated hollow shoes; the circulating water pump is fixedly connected to the heat sink through the boost pipe and the return pipe; the boost pipe and the return pipe are used for the circulation of cooling liquid; the liquid storage container is fixedly connected to the return pipe.

[0007] Furthermore, the brake drum also includes a vehicle wheel hub, a rear wheel drive shaft, and concave-convex heat dissipation grooves; the vehicle wheel hub is fixedly connected to the brake drum by bolts; the rear wheel drive shaft is fixedly connected to the vehicle wheel hub by bolts; the rear wheel drive shaft is hinged on the rear axle of the vehicle; the concave-convex heat dissipation grooves are arranged on the outer arc surface of the brake drum; the concave-convex heat dissipation grooves are used to increase air flow, thereby increasing the heat dissipation effect of the brake drum.

[0008] Furthermore, the outer arc surface of the inner and outer ring wave hollow shoes is a ring wave shape, and also includes an outflow joint, an inflow joint, and a connecting hose; the two ends of the connecting hose are respectively fixedly installed on the two cooling cavities; the outflow joint and the inflow joint are respectively fixedly installed on the two cooling cavities; the outflow joint is also fixedly connected to the return pipe; the inflow joint is also fixedly connected to the boost pipe.

[0009] Furthermore, a wave-shaped protrusion is provided on the inner wall of the cooling cavity; the wave-shaped protrusion is used to increase the contact area between the inner wall of the cooling cavity and the cooling liquid.

[0010] Furthermore, a cam shaft is provided on the brake cam; the cam shaft is hinged on the brake base plate disc; the cam shaft is used to drive the brake cam to rotate.

[0011] Furthermore, the circulating water pump also includes a front diverter joint, an engine, a rear diverter joint, a rear merging joint, a circulating switch, a front merging joint, a cooling fan, and water pump blades; the engine is fixedly connected to the vehicle body; the cooling fan is fixedly connected to the output shaft of the engine; the water pump blades are fixedly connected to the output shaft of the engine; the front diverter joint is respectively fixedly connected to the three boost pipes; the rear diverter joint is respectively fixedly connected to the three boost pipes; the rear merging joint is respectively fixedly connected to the three return pipes; the circulating switch is fixedly installed on the reflux pipe between the water pump blades and the liquid storage container; the front merging joint is respectively fixedly connected to the three return pipes.

[0012] Furthermore, a pressure regulating valve and cooling liquid are provided on the liquid storage container; the pressure regulating valve is used to regulate the internal pressure of the liquid storage container.

[0013] Compared with the prior art, the present invention has the following beneficial effects: (1) In the prior art, the friction plate is usually placed on the outer arc surface of the brake shoe, and the contact between the friction plate and the wheel drum is arc surface contact, which cannot effectively isolate heat and increase the braking effect. However, the brake drum in the present application avoids the high temperature of the brake drum due to friction by placing the inner ring corrugated friction plate on the inner arc surface of the brake drum. The inner ring corrugated friction plate is made of heat-insulating material, and the arc surface contact is changed to wave-type contact to increase the contact area and improve the braking effect. (2) In the prior art, air cooling and liquid cooling of the brake shoe and wheel drum are mainly limited to the surface of the brake shoe and wheel drum, and cannot better increase the cooling effect. However, the inner and outer ring corrugated hollow shoe in the present application realizes the internal circulation cooling function by circulating the cooling liquid between the boost pipe, the return pipe and the cooling cavity, directly taking away the high temperature generated by friction, and overcoming the harm of the spray cooling method to the wheel drum and tire. (3) On the basis of the existing automobile coolant circulation system, only the installation position of the inner ring corrugated friction plate and the structure of the inner and outer ring corrugated hollow shoes are changed, and then the liquid storage container and other cooling circulation components are added. The cooling liquid increases the capacity of the automobile engine's cooling circulation liquid reserves to achieve the improvement of the vehicle's safety braking performance and reduce the upgrade cost of the braking system and the circulating cooling system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a plan cross-sectional view of an embodiment of the utility model.

[0015] Figure 2 It is a side sectional view of an embodiment of the utility model.

[0016] Figure 3 It is a partial schematic diagram of a plane section of an embodiment of the utility model.

[0017] Figure 4 It is a side sectional view of the working state of the embodiment of the utility model.

[0018] Figure 5 This is a working state structure setting diagram of an embodiment of the utility model.

[0019] In the figure: 1-brake base plate disc; 2-brake drum; 3-inner ring corrugated friction plate; 4-cooling cavity; 5-inner and outer ring corrugated hollow shoes; 6-outflow joint; 7-vehicle wheel hub; 8-vehicle rear axle; 9-rear wheel drive shaft; 10-cam shaft; 11-inflow joint; 12-concave and convex heat dissipation inclined groove; 13-eccentric support pin; 14-connecting hose; 15-brake mounting hole; 16-return tension spring; 17-brake cam; 18-cooling water tank; 19-front diverter joint; 20-circulating water pump; 21-boosting pipeline; 22-engine; 23-rear diverter joint; 24-rear confluence joint; 25-return pipeline; 26-cooling liquid; 27-pressure regulating valve; 28-liquid storage container; 29-circulation switch; 30-front confluence joint; 31-cooling fan; 32-water pump blades; 33-vehicle front axle. DETAILED DESCRIPTION

[0020] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0021] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0022] Figures 1 to 5 It is a preferred embodiment of the present utility model.

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, brake mounting holes 15 are provided on the rear axle 8 and the front axle 33 of the vehicle; the brake base plate disc 1 is fixedly connected to the brake mounting holes 15 of the rear axle 8 and the brake mounting holes 15 of the front axle 33 of the vehicle respectively; the brake drum 2 is hinged to the rear axle 8 and the brake base plate disc 1 respectively; the two ends of the return tension spring 16 are fixedly installed on the two liquid-cooled brake shoes 5 respectively; the circulating water pump 20 is provided with a boost pipe 21 and a return pipe 25; the boost pipe 21 is fixedly connected to the inner and outer ring wave hollow shoes 5; the return pipe 25 is fixedly connected to the inner and outer ring wave hollow shoes 5; an inner ring wave friction plate 3 is provided on the inner arc surface of the brake drum 2; the material of the inner ring wave friction plate 3 is a heat-insulating material; the inner ring wave friction plate 3 is used to increase the contact of friction and heat dissipation. area; an eccentric support pin 13 and a cooling cavity 4 are provided on the inner and outer ring wave hollow shoes 5; the liquid-cooled brake shoe 5 is hinged to the inner side of the brake base plate disc 1 through the eccentric support pin 13; a cooling liquid 26 is provided in the cooling cavity 4; the cooling liquid 26 is a car coolant; the cooling cavity 4 and the cooling liquid 26 are used to absorb and take away the heat; the brake cam 17 is hinged on the brake base plate disc 1; the brake cam 17 is also in frictional contact with the liquid-cooled brake shoe 5; the circulating water pump 20 is fixedly connected to the heat dissipation water tank 18 through the boost pipe 21 and the return pipe 25; the boost pipe 21 and the return pipe 25 are used for the circulation of the cooling liquid 26; the liquid storage container 28 is fixedly connected to the return pipe 25; in the brake wheel drum 2, the vehicle wheel hub 7 is connected to the brake wheel by bolts. The rear wheel drive shaft 9 is fixedly connected to the vehicle wheel hub 7 by bolts; the rear wheel drive shaft 9 is hinged on the vehicle rear axle 8; the concave-convex heat dissipation inclined groove 12 is arranged on the outer arc surface of the brake wheel drum 2; the concave-convex heat dissipation inclined groove 12 is used to increase the flow of air, thereby increasing the heat dissipation effect of the brake wheel drum 2; in the liquid-cooled brake shoe 5, the two ends of the connecting hose 14 are respectively fixedly installed on the two cooling cavities 4; the outflow joint 6 and the inflow joint 11 are respectively fixedly installed on the two cooling cavities 4; the outflow joint 6 is also fixedly connected to the return pipe 25; the inflow joint 11 is also fixedly connected to the boost pipe 21; in the cooling cavity 4, a wave-shaped protrusion is arranged on the inner wall of the cooling cavity 4; the wave-shaped protrusion is used to increase the cooling cavity 4 The contact area between the inner wall and the cooling liquid 26; in the brake cam 17, a cam shaft 10 is provided on the brake cam 17; the cam shaft 10 is hinged on the brake bottom plate disc 1; the cam shaft 10 is used to drive the brake cam 17 to rotate; in the circulating water pump 20, the engine 22 is fixedly connected to the vehicle body; the cooling fan 31 is fixedly connected to the output shaft of the engine 22; the water pump blade 32 is fixedly connected to the output shaft of the engine 22; the front flow splitter joint 19 is fixedly connected to the three boosting pipes 21 respectively; the rear flow splitter joint 23 is fixedly connected to the three boosting pipes 21 respectively; the rear confluence joint 24 is fixedly connected to the three return pipes 25 respectively; the circulation switch 29 is fixedly installed on the return pipe 25 between the water pump blade 32 and the liquid storage container 28;The front confluence joint 30 is fixedly connected to the three return pipes 25 respectively; in the liquid storage container 28, the pressure regulating valve 27 is used to adjust the internal pressure of the liquid storage container 28. ;

[0024] The working principle of this utility model: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The usage and corresponding scenarios of the utility model are given. The posture control of the brake shoe during braking and cooling is determined by the brake wheel drum 2, the inner and outer ring wave hollow shoes 5, the circulating water pump 20 and the liquid storage container 28. The posture of the brake wheel drum 2 is determined by the inner and outer ring wave hollow shoes 5, the posture of the circulating water pump 20 is determined by the inner and outer ring wave hollow shoes 5, and the posture of the liquid storage container 28 is determined by the inner and outer ring wave hollow shoes 5. Therefore, the inner and outer ring wave hollow shoes 5 are the core of the brake shoe braking and cooling process.

[0025] Taking the first embodiment as an example, when the vehicle needs to control the speed while traveling on a mountain road with long slopes and many bends, the circulation switch 29 is turned on in advance, and the cooling liquid 26 in the liquid storage container 28 is pressurized by the circulating water pump 20, and then transported to each inner and outer ring wave hollow shoe 5 through the pressurization pipeline 21 and the rear diversion joint 23, and then the cooling liquid 26 absorbs the heat on the brake drum 2, and the cooling liquid 26 flows into the liquid storage container 28 through the return pipeline 25 and the rear confluence joint 24 to realize the liquid cooling circulation of the inner and outer ring wave hollow shoe 5. When the vehicle is traveling on a road on a vast plain, in order to extend the service life of the entire system, the circulation switch 29 can be turned off to cut off the circulation of the cooling liquid 26.

[0026] Specifically, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, when the car brakes, the cam shaft 10 on the brake base disc 1 controls the brake cam 17 to rotate, and the brake cam 17 drives the two inner and outer ring wave hollow shoes 5 to open outward around the axis of the eccentric support pin 13, so that the inner and outer ring wave hollow shoes 5 are in friction contact with the inner ring wave friction plate 3, and the inner ring wave friction plate 3 drives the brake drum 2 to decelerate through the friction force, and the brake drum 2 drives the rear wheel drive shaft 9 to decelerate through the vehicle wheel hub 7 to achieve the braking function; when the vehicle is traveling on a mountain road and needs to control the speed, the driver turns on the circulation switch 29 in advance, The cooling liquid 26 in the liquid storage container 28 enters the circulating water pump 20 through the return pipe 25, and then the engine 22 drives the water pump blade 32 to rotate, so that the cooling liquid 26 flowing out of the circulating water pump 20 is pressurized, and then transported to the inlet joints 11 of each liquid-cooled brake shoe 5 through the pressurization pipe 21 and the rear diversion joint 23, and then enters a cooling cavity 4 from the inlet joint 11, and the cooling liquid 26 then flows into another cooling cavity 4 through the connecting hose 14, and at the same time, the cooling liquid 26 will contact the inner wall of the cooling cavity 4, which will make the inner ring corrugated The heat on the friction plate 3 and the inner and outer ring wave hollow shoes 5 is absorbed, and then flows into the liquid storage container 28 through the outflow joint 6, the return pipe 25 and the rear confluence joint 24, thereby realizing the liquid cooling circulation function of the liquid-cooled brake shoe 5; when the cooling liquid 26 in the circulating water pump 20 is pressurized and flows out, the cooling liquid 26 will also enter the cooling water tank 18 through the front diversion joint 19. At this time, the engine 22 will drive the cooling fan 31 to rotate, and then flow into the circulating water pump 20 through the return pipe 25 and the front confluence joint 30 to realize the rapid cooling of the cooling liquid 26 Cooling function; when the vehicle is running, air will flow in the concave and convex heat dissipation grooves 12 of the brake drum 2, and the air will absorb the heat on the brake drum 2 and take it away; when the vehicle is running on a road on a vast plain, in order to extend the service life of the entire system, the circulation switch 29 can be closed to cut off the circulation of the cooling liquid 26; the return spring 16 is used to return the inner and outer ring wave hollow shoes 5 to their original positions; the brake mounting hole 15 is used to position and install the brake base plate disc 1 and the vehicle front axle 33 and the vehicle rear axle 8; the pressure regulating valve 27 is used to adjust the internal pressure of the liquid storage container 28.

[0027] The present invention is not limited to the above-mentioned specific implementation modes. Various changes made by technicians in the relevant technical field based on the above-mentioned conception without creative labor all fall within the protection scope of the present invention.

Claims

1. A brake shoe circulation cooling system for a vehicle, comprising a brake base disc (1), a brake drum (2), a vehicle rear axle (8), inner and outer ring wave hollow shoes (5), a return tension spring (16), a brake cam (17), a heat dissipation water tank (18), a circulation water pump (20), a liquid storage container (28), and a vehicle front axle (33); the vehicle rear axle (8) and the vehicle front axle (33) are both provided with brake mounting holes (15); the brake base disc (1) is respectively connected to the brake mounting holes (15) of the vehicle rear axle (8) and the brake mounting holes (15) of the vehicle rear axle (8) and the brake mounting holes (15) of the vehicle rear axle (8) and the brake mounting holes (15) of the vehicle rear axle (8) and the brake mounting holes (15) of the vehicle rear axle (8) and the brake mounting holes (15) of the vehicle rear axle (8) and the brake mounting holes (15) of the vehicle front axle (33) and ... ), and the brake mounting hole (15) of the front axle (33) of the vehicle; the brake drum (2) is hinged to the rear axle (8) of the vehicle and the brake base plate disc (1) respectively; the two ends of the return tension spring (16) are respectively fixedly mounted on the two inner and outer ring wave hollow shoes (5); the circulating water pump (20) is provided with a boosting pipeline (21) and a return pipeline (25); the boosting pipeline (21) is fixedly connected to the inner and outer ring wave hollow shoes (5); the return pipeline (25) is fixedly connected to the inner and outer ring wave hollow shoes (5), and is characterized in that: An inner annular corrugated friction plate (3) is arranged on the inner arc surface of the brake drum (2); the material of the inner annular corrugated friction plate (3) is a heat-insulating material, and its inner annular arc surface is an annular wave shape; the inner annular corrugated friction plate (3) is used to increase the contact area and braking effect with the inner and outer annular corrugated hollow shoes (5), while blocking the high temperature generated by the brake drum (2); the inner and outer annular corrugated hollow shoes (5) are provided with an eccentric support pin (13) and a cooling cavity (4); the inner and outer annular corrugated hollow shoes (5) are hinged to the inner side of the brake base plate disc (1) through the eccentric support pin (13); the cooling cavity (4) contains a cooling liquid (26); the cooling liquid (26) is a vehicle coolant; the cooling cavity (4) and the cooling liquid (26) are used to absorb and flow away heat; the brake cam (17) is hinged on the brake base plate disc (1); the brake cam (17) is also in matching friction contact with the inner and outer ring wave hollow shoes (5); the circulating water pump (20) is fixedly connected to the heat dissipation water tank (18) through the boosting pipeline (21) and the return pipeline (25); the boosting pipeline (21) and the return pipeline (25) are used for the circulation of the cooling liquid (26); the liquid storage container (28) is fixedly connected to the return pipeline (25).

2. A brake shoe circulation cooling system for a vehicle as claimed in claim 1, characterized in that: The brake drum (2) further comprises a vehicle wheel hub (7), a rear wheel drive shaft (9), and a concave-convex heat dissipation inclined groove (12); the vehicle wheel hub (7) is fixedly connected to the brake drum (2) by bolts; the rear wheel drive shaft (9) is fixedly connected to the vehicle wheel hub (7) by bolts; the rear wheel drive shaft (9) is hinged on the vehicle rear axle (8); the concave-convex heat dissipation inclined groove (12) is arranged on the outer arc surface of the brake drum (2); the concave-convex heat dissipation inclined groove (12) is used to increase air flow, thereby increasing the heat dissipation effect of the brake drum (2).

3. A brake shoe circulation cooling system for a vehicle as claimed in claim 2, characterized in that: The inner and outer ring wave hollow shoe (5) further comprises an outflow joint (6), an inflow joint (11), and a connecting hose (14); the two ends of the connecting hose (14) are respectively fixedly mounted on the two cooling cavities (4); the outflow joint (6) and the inflow joint (11) are respectively fixedly mounted on the two cooling cavities (4); the outflow joint (6) is also fixedly connected to the return pipe (25); and the inflow joint (11) is also fixedly connected to the boost pipe (21).

4. A brake shoe circulation cooling system for a vehicle as claimed in claim 3, characterized in that: A wave-shaped protrusion is provided on the inner wall of the cooling cavity (4); the wave-shaped protrusion is used to increase the contact area between the inner wall of the cooling cavity (4) and the cooling liquid (26).

5. A brake shoe circulation cooling system for a vehicle as claimed in claim 4, characterized in that: A cam shaft (10) is provided on the brake cam (17); the cam shaft (10) is hinged on the brake base disc (1); and the cam shaft (10) is used to drive the brake cam (17) to rotate.

6. A brake shoe circulation cooling system for a vehicle as claimed in claim 5, characterized in that: The liquid storage container (28) is provided with a pressure regulating valve (27) and cooling liquid (26); the pressure regulating valve (27) is used to regulate the internal pressure of the liquid storage container (28).

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