CN111706630A

CN111706630A - Car dish formula brake cooling processing apparatus

Info

Publication number: CN111706630A
Application number: CN202010604338.3A
Authority: CN
Inventors: 姚海燕
Original assignee: Xiamen Daosu Auto Accessories Co Ltd
Current assignee: Xiamen Daosu Auto Accessories Co Ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2020-09-25

Abstract

The invention discloses an automobile disc brake cooling processing device, which comprises an automobile body, wherein a tire is arranged on the automobile body, a brake disc is arranged on the front side end face of the tire, a brake driving device is arranged on the front side end face of the automobile body and used for providing power required by braking, a brake block cooling device is arranged on the brake driving device, a cooling water adjusting device positioned on the lower side of the brake block cooling device is arranged on the brake driving device, a brake disc cooling and water collecting device positioned on the front side of the brake disc is arranged on the brake driving device, the brake disc cooling and water collecting device can recover rainwater on the brake disc to prevent the rainwater on the brake disc from influencing normal braking, the invention realizes cooling by adopting active liquid cooling, has better cooling effect and effectively avoids brake failure caused by continuous braking, and can avoid rainwater influence normal braking.

Description

Car dish formula brake cooling processing apparatus

Technical Field

The invention relates to the technical field of brake pad cooling, in particular to an automobile disc brake cooling treatment device.

Background

Disc brakes refer to brake systems that employ metal blocks (discs) rather than drums. The disc brake is provided with a flat brake shoe on both sides of a brake disc, when the oil pressure of a brake master cylinder is pressed to a cylinder, the brake shoe is clamped towards the brake disc to achieve the effect of tight braking, the brake disc and a brake pad can generate larger heat in the automobile braking process, the temperature of the brake pad can be overhigh during continuous braking, and the brake pad can be out of order.

Disclosure of Invention

The technical problem is as follows: at present, the cooling mode of the disc brake mainly adopts natural air cooling, and the cooling effect is poor, so that the continuous brake is easy to cause brake failure.

In order to solve the problems, the embodiment designs an automobile disc brake cooling device, the automobile disc brake cooling device of the embodiment comprises an automobile body, wherein a tire is arranged on the automobile body, a brake disc is arranged on the front side end face of the tire, a brake driving device is arranged on the front side end face of the automobile body, the brake driving device is used for providing power required by braking, the brake driving device comprises a lifting plate arranged on the front side of the automobile body, a brake pad cooling device is arranged on the brake driving device, the brake pad cooling device is used for braking and cooling and radiating the brake pad, the cooling and cooling capacity can be automatically adjusted according to the heat generated by braking, a cooling water adjusting device arranged on the lower side of the brake pad cooling device is arranged on the brake driving device, the cooling water adjusting device changes the condensation rate of a refrigerant according to the heat generated by braking, the cooling water adjusting device comprises a main water tank fixedly connected to the end face of the rear side of the lifting plate, a water pump is arranged on the end face of the right side of the main water tank, an auxiliary water tank positioned on the upper side of the water pump is fixedly connected to the end face of the right side of the main water tank, an auxiliary water cavity communicated with the main water tank is arranged in the auxiliary water tank, a brake disc cooling and water collecting device positioned on the front side of the brake disc is arranged on the brake driving device, the brake disc cooling and water collecting device can cool the brake disc and can recover rainwater on the brake disc to avoid the influence of the rainwater on the brake disc on normal braking, the brake disc cooling and water collecting device comprises two sliding cylinders which are fixedly connected to the end face of the rear side of the lifting plate and are vertically symmetrical, the opening of the sliding cylinders faces backwards, and an auxiliary evaporator is connected in the sliding cylinders in a sliding manner, the rainwater collecting device is characterized in that a spring is connected between the auxiliary evaporator and the sliding barrel, a rainwater collecting disc is fixedly connected to the end face of the front side of the auxiliary evaporator, a water collecting cavity with an opening facing backwards and facing upwards is arranged in the spring, and three fixing blocks are distributed on the inner wall of the front side of the water collecting cavity in an annular array mode.

Preferably, the lifting plate is located on the front side of the tire, a hydraulic cylinder mechanism is fixedly connected to the end face of the front side of the vehicle body, a hydraulic rod extending forwards is arranged in the hydraulic cylinder mechanism, and the hydraulic rod is fixedly connected with the lifting plate.

Preferably, the brake pad cooling device comprises a compressor fixedly connected to the rear end face of the lifter plate, a rheostat is arranged on the upper end face of the compressor, the rheostat can adjust the amount of current of the compressor so as to control the power of the compressor, a piston rod extending rightwards is arranged on the right side of the rheostat, a piston cylinder positioned on the right side of the rheostat is fixedly connected to the rear end face of the lifter plate, a piston cavity with a leftward opening is arranged in the piston cylinder, a piston is connected in the piston cavity in a sliding manner, the piston rod extends into the piston cavity and is fixedly connected with the left end face of the piston, a compression spring is connected between the piston and the left inner wall of the piston cavity, an evaporator is fixedly connected to the rear end face of the lifter plate, and refrigerants are stored in the evaporator and the auxiliary evaporator, the evaporator and the compressor are communicated and connected with an output pipe, a temperature measuring box is arranged in the evaporator, fluid with a large thermal expansion coefficient is stored in the temperature measuring box, the temperature measuring box and the piston cavity are communicated and connected with a connecting pipe, and a brake pad is fixedly connected to the end face of the rear side of the evaporator.

Preferably, an auxiliary temperature measuring box is fixedly connected to the inner wall of the lower side of the auxiliary water cavity, a fluid with a relatively large thermal expansion coefficient is stored in the auxiliary temperature measuring box, a sealing plate is slidably connected to the inner wall of the left side of the auxiliary water cavity and can seal a communication port between the auxiliary water cavity and the main water tank, an auxiliary piston cylinder is fixedly connected to the end surface of the lower side of the auxiliary water tank, an auxiliary piston cavity communicated with the auxiliary temperature measuring box is arranged in the auxiliary piston cylinder, an auxiliary piston is slidably connected to the inner cavity of the auxiliary piston, an auxiliary compression spring is connected between the auxiliary piston and the inner wall of the lower side of the auxiliary piston cavity, an auxiliary piston rod extending downwards to the end surface of the auxiliary piston cavity is fixedly connected to the end surface of the lower side of the auxiliary piston, a cross rod located on the lower side of the auxiliary piston cylinder is fixedly connected to the end surface of the cross rod on the, the lifting rod is fixedly connected with the sealing plate, six radiating fins distributed in an array from bottom to top are fixedly connected to the auxiliary water tank, a water collecting tank is communicated and connected to the upper side end face of the auxiliary water tank, the opening of the water collecting tank faces upwards, a condenser is arranged on the inner wall of the upper side of the water collecting tank, a liquid conveying pipe is communicated and connected between the condenser and the compressor, a spray pipe is fixedly connected to the rear end face of the lifting plate, seven spray heads are distributed in an array from left to right on the lower side end face of the spray pipe, the openings of the spray heads face downwards, a water conveying pipe is communicated and connected between the spray pipe and the water pump, a valve body positioned on the lower side of the auxiliary piston cylinder is arranged on the water conveying pipe, a valve body cavity communicated with the water conveying pipe is arranged in the valve body, a valve core is slidably connected to, and the end surface of the upper side of the valve core is fixedly connected with a connecting rod which extends upwards to the outside of the end surface of the cavity of the valve body, and the connecting rod is fixedly connected with the cross rod.

Preferably, four balls are arranged on the end surface of the rear side of the fixed block, a soft rain wiping plate is fixedly connected to the end surface of one side of the fixed block, the soft rain wiping plate is used for wiping off rainwater on the front end face of the brake disc, the soft rain wiping plate on the upper side is fixedly connected to the right end face of the fixed block on the upper side, the soft rain wiping plate on the lower side is fixedly connected to the left end face of the fixed block on the lower side, the water collecting cavity is communicated and connected with the main water tank through a conveying pipe, the upper side end face of the condenser is communicated and connected with an auxiliary liquid conveying pipe, a four-way valve is arranged on the auxiliary infusion tube, an input tube is communicated and connected between the four-way valve and the auxiliary evaporator on the upper side, the input pipe is communicated with the evaporator and is connected with an auxiliary input pipe, the auxiliary input pipe is communicated with the auxiliary evaporator on the lower side, and the auxiliary evaporator is communicated with the evaporator and is connected with an auxiliary conveying pipe.

The invention has the beneficial effects that: the brake disc cooling and water collecting device can automatically scrape rainwater on the brake disc, avoid the influence of the rainwater on normal braking, collect the rainwater as cooling water and have a certain water saving effect.

Drawings

For ease of illustration, the invention is described in detail by the following specific examples and figures.

FIG. 1 is a schematic view of the overall structure of a disk brake cooling device for an automobile according to the present invention;

FIG. 2 is a schematic view of the structure in the direction "A-A" of FIG. 1;

FIG. 3 is an enlarged view of the structure at "B" in FIG. 1;

FIG. 4 is an enlarged view of the structure at "C" of FIG. 3;

FIG. 5 is an enlarged view of the structure at "D" of FIG. 3;

FIG. 6 is an enlarged view of the structure at "E" of FIG. 5;

FIG. 7 is a schematic view of the structure in the direction "F-F" of FIG. 3;

FIG. 8 is a schematic view of the structure in the direction "G-G" of FIG. 7;

FIG. 9 is a schematic view of the structure in the direction "H-H" of FIG. 7.

Detailed Description

The present invention will be described in detail with reference to fig. 1 to 9, and for the sake of convenience of description, the following orientations will be defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The invention relates to an automobile disc brake cooling treatment device, which is mainly applied to cooling a brake pad, and the invention is further explained by combining the attached drawings of the invention: the invention relates to an automobile disc brake cooling processing device, which comprises an automobile body 11, wherein the automobile body 11 is provided with a tire 13, the front side end face of the tire 13 is provided with a brake disc 58, the front side end face of the automobile body 11 is provided with a brake driving device 101, the brake driving device 101 is used for providing power required by braking, the brake driving device 101 comprises a lifting plate 21 arranged on the front side of the automobile body 11, the brake driving device 101 is provided with a brake pad cooling device 102, the brake pad cooling device 102 is used for braking and cooling a brake pad 41 and can automatically adjust the cooling capacity according to the heat generated by braking, the brake driving device 101 is provided with a cooling water adjusting device 103 positioned on the lower side of the brake pad cooling device 102, and the cooling water adjusting device 103 changes the condensation rate of a refrigerant according to the heat generated by braking, and can recover the waste water produced by cooling, the cooling water adjusting device 103 comprises a main water tank 16 fixedly connected to the rear end face of the lifting plate 21, a water pump 40 is arranged on the end face of the right side of the main water tank 16, an auxiliary water tank 15 positioned on the upper side of the water pump 40 is fixedly connected to the end face of the right side of the main water tank 16, an auxiliary water cavity 37 communicated with the main water tank 16 is arranged in the auxiliary water tank 15, a brake disc cooling and water collecting device 104 positioned on the front side of the brake disc 58 is arranged on the brake driving device 101, the brake disc cooling and water collecting device 104 can cool the brake disc 58 and can recover the rainwater on the brake disc 58 to avoid the influence of the rainwater on the brake disc 58 on normal braking, the brake disc cooling and water collecting device 104 comprises two sliding cylinders 56 which are fixedly connected to the rear end face of the lifting plate 21 and are vertically symmetrical, the opening of the sliding barrel 56 faces backwards, the sliding barrel 56 is connected with an auxiliary evaporator 19 in a sliding mode, a spring 57 is connected between the auxiliary evaporator 19 and the sliding barrel 56, a rainwater collecting disc 27 is fixedly connected to the end face of the front side of the auxiliary evaporator 19, a water collecting cavity 60 with an opening facing backwards and facing upwards is arranged in the spring 57, and three fixing blocks 59 are distributed on the inner wall of the front side of the water collecting cavity 60 in an annular array mode.

Advantageously, the lifting plate 21 is located at the front side of the tire 13, a hydraulic cylinder mechanism 22 is fixedly connected to the front end face of the vehicle body 11, a hydraulic rod 31 extending forwards is arranged in the hydraulic cylinder mechanism 22, and the hydraulic rod 31 is fixedly connected to the lifting plate 21.

Advantageously, the brake pad cooling device 102 comprises a compressor 23 fixedly connected to the rear end surface of the lifter plate 21, a rheostat 63 provided on the upper end surface of the compressor 23, the rheostat 63 being capable of adjusting the amount of current flowing through the compressor 23 to control the power of the compressor 23, a piston rod 42 extending rightward from the right side of the rheostat 63, a piston cylinder 64 located on the right side of the rheostat 63 and fixedly connected to the rear end surface of the lifter plate 21, a piston cavity 44 opened to the left side being provided in the piston cylinder 64, a piston 45 slidably connected to the piston cavity 44, the piston rod 42 extending into the piston cavity 44, the piston rod 42 being fixedly connected to the left end surface of the piston 45, a compression spring 43 connected between the piston 45 and the left inner wall of the piston cavity 44, and an evaporator 24 fixedly connected to the rear end surface of the lifter plate 21, the evaporator 24 and the auxiliary evaporator 19 are both stored with refrigerant, the evaporator 24 is communicated with the compressor 23 and is connected with an output pipe 26, a temperature measuring box 25 is arranged in the evaporator 24, fluid with a large thermal expansion coefficient is stored in the temperature measuring box 25, the temperature measuring box 25 is communicated with the piston cavity 44 and is connected with a connecting pipe 46, and the end face of the rear side of the evaporator 24 is fixedly connected with a brake pad 41.

Beneficially, an auxiliary temperature measuring box 38 is fixedly connected to the inner wall of the lower side of the auxiliary water cavity 37, a fluid with a relatively large thermal expansion coefficient is stored in the auxiliary temperature measuring box 38, a sealing plate 47 is slidably connected to the inner wall of the left side of the auxiliary water cavity 37, the sealing plate 47 can seal the communication port between the auxiliary water cavity 37 and the main water tank 16, an auxiliary piston cylinder 51 is fixedly connected to the end surface of the lower side of the auxiliary water tank 15, an auxiliary piston cavity 55 communicated with the auxiliary temperature measuring box 38 is arranged in the auxiliary piston cylinder 51, an auxiliary piston 52 is slidably connected to the auxiliary piston cavity 55, an auxiliary compression spring 53 is connected between the auxiliary piston 52 and the inner wall of the lower side of the auxiliary piston cavity 55, an auxiliary piston rod 54 extending downwards to the end surface of the auxiliary piston cavity 55 is fixedly connected to the end surface of the lower side of the auxiliary piston 52, and a cross rod 49, the lifting rod 48 extending upwards into the auxiliary water cavity 37 is fixedly connected to the upper end face of the cross rod 49, the lifting rod 48 is fixedly connected with the sealing plate 47, six cooling fins 36 distributed in an array from bottom to top are fixedly connected to the auxiliary water tank 15, the upper end face of the auxiliary water tank 15 is communicated with the water collecting tank 35, the opening of the water collecting tank 35 is upward, the condenser 14 is arranged on the inner wall of the upper side of the water collecting tank 35, the condenser 14 is communicated with the compressor 23 and is connected with the infusion tube 17, the rear end face of the lifting plate 21 is fixedly connected with the spray tube 33, seven spray heads 34 are distributed on the lower end face of the spray tube 33 in an array from left to right, the spray heads 34 are downward opened, the spray tube 33 is communicated with the water pump 40 and is connected with the water delivery tube 12, and the water delivery tube 12 is provided with a valve body, a valve body cavity 66 communicated with the water delivery pipe 12 is arranged in the valve body 39, a valve core 65 is connected on the inner wall of the left side of the valve body cavity 66 in a sliding manner, the valve core 65 can seal a through hole between the valve body cavity 66 and the water delivery pipe 12, a connecting rod 50 extending upwards to the outside of the end face of the valve body cavity 66 is fixedly connected on the end face of the upper side of the valve core 65, and the connecting rod 50 is fixedly connected with the cross rod 49.

Beneficially, four balls 61 are arranged on the end face of the rear side of the fixed block 59, a soft rain-wiping plate 62 is fixedly connected to the end face of one side of the fixed block 59, the soft rain-wiping plate 62 is used for wiping off rainwater on the end face of the front side of the brake disc 58, the soft rain-wiping plate 62 on the upper side is fixedly connected to the end face of the right side of the fixed block 59 on the upper side, the soft rain-wiping plate 62 on the lower side is fixedly connected to the end face of the left side of the fixed block 59 on the lower side, the water collecting cavity 60 and the main water tank 16 are communicated and connected with the delivery pipe 18, the end face of the upper side of the condenser 14 is communicated and connected with the auxiliary infusion pipe 32, the auxiliary infusion pipe 32 is provided with a four-way valve 30, the four-way valve 30 and the auxiliary evaporator 19 on the upper side are communicated and connected with each other to form an input pipe 28, the auxiliary input, and a secondary delivery pipe 20 is communicated between the secondary evaporator 19 and the evaporator 24.

The following describes in detail the usage steps of the automotive disc brake cooling device with reference to fig. 1 to 9: initial state: the lifting plate 21 is positioned at the front limit position, the ball 61, the rain-wiping soft plate 62 and the brake pad 41 are not contacted with the brake disc 58, the piston 45 is positioned at the right limit position under the action of the compression spring 43, the auxiliary piston 52 is positioned at the upper limit position under the action of the auxiliary compression spring 53, the valve core 65 is positioned at the upper limit position, and the opening of the valve cavity 66 and the communication port of the water pipe 12 is in the minimum state; during braking, the hydraulic cylinder mechanism 22 drives the hydraulic rod 31 and the lifting plate 21 to move backwards, so that the soft rain-scraping plate 62 is abutted to the first brake disc 58, if rainwater is arranged on the front end face of the brake disc 58 at the moment, the soft rain-scraping plate 62 can scrape off the rainwater on the brake disc 58 and collect the rainwater through the water collecting cavity 60, then the rainwater is conveyed into the main water tank 16 through the conveying pipe 18 for storage, then the soft rain-scraping plate 62 continuously moves rightwards so that the ball 61 and the brake pad 41 are abutted to the brake disc 58, braking is realized through abutting of the brake pad 41 to the brake disc 58, and meanwhile due to the rainwater scraping effect of the brake disc 58, the rainwater on the brake disc 58 is prevented from influencing the braking performance of the brake pad 41, so that normal braking in rainy days is; meanwhile, in the braking process, the compressor 23 and the water pump 40 are started, the evaporator 24 absorbs heat generated by the brake pad 41 during braking, the auxiliary evaporator 19 absorbs heat generated by the brake disc 58 during braking, then the compressor 23 extracts refrigerants in the evaporator 24 and the auxiliary evaporator 19 through the output pipe 26 and the auxiliary conveying pipe 20, conveys the refrigerants in the evaporator 24 and the auxiliary evaporator 19 to the condenser 14 through the conveying pipe 17 for cooling, and then conveys the refrigerants back to the auxiliary evaporator 19 and the evaporator 24 through the auxiliary conveying pipe 32, the four-way valve 30, the input pipe 28 and the auxiliary input pipe 29, so that the refrigeration cycle is realized, and the evaporators 24 and the auxiliary evaporators 19 are cooled; meanwhile, the temperature in the evaporator 24 is detected through the temperature measuring box 25, and the thermal expansion amount of the fluid in the temperature measuring box 25 is increased along with the rise of the temperature in the evaporator 24, so that the fluid in the temperature measuring box 25 pushes the piston 45 to move leftwards through the connecting pipe 46 to increase, the piston 45 and the piston rod 42 move leftwards to increase, the resistance of the rheostat 63 is reduced, the current amount of the compressor 23 is increased, the power of the compressor 23 is laterally improved, the cooling effect is improved along with the rise of the temperature of the brake pad 41, and the brake pad 41 is ensured to be heated slowly; meanwhile, the water pump 40 conveys cooling water in the main water tank 16 into the spray pipe 33 through the water pump 40, the valve body cavity 66 and the water conveying pipe 12, the cooling water is sprayed out through the spray head 34 to cool the condenser 14, the sprayed water flows into the auxiliary water cavity 37 through the water collecting tank 35 and then flows into the auxiliary water cavity 37 for storage and cooling, the temperature of the cooling water after cooling the condenser 14 is increased along with the increase of heat generated by braking, the temperature of the cooling water in the auxiliary water cavity 37 is detected by the auxiliary temperature measuring tank 38, the thermal expansion amount of fluid in the auxiliary temperature measuring tank 38 is increased along with the increase of the temperature of the water in the auxiliary water cavity 37, the auxiliary piston 52 is pushed to move downwards, the auxiliary piston 52 drives the auxiliary piston rod 54, the cross rod 49, the connecting rod 50, the valve core 65, the lifting rod 48 and the sealing plate 47 to move downwards to gradually close a through hole between the auxiliary water cavity 37 and the main water tank 16, and the amount of the water in the, therefore, the influence on the temperature of cooling water in the main water tank 16 is reduced, the valve core 65 moves downwards to enable the valve body cavity 66 to be gradually enlarged with the communication port of the water delivery pipe 12, the spraying amount of the cooling water of the spray head 34 is increased, the cooling effect on the condenser 14 is improved, the refrigerating effect of the whole refrigerating system is improved, the heat dissipation effect on the brake block 41 and the brake disc 58 is improved, namely the cooling effect is improved along with the temperature rise of the brake block 41, the brake block 41 is ensured to be slowly heated, and the braking effect is ensured.

In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.

Claims

1. The utility model provides an automobile disc brake cooling processing apparatus, includes the automobile body, its characterized in that: the automobile brake device is characterized in that a tire is arranged on the automobile body, a brake disc is arranged on the front side end face of the tire, a brake driving device is arranged on the front side end face of the automobile body and used for providing power required by braking, the brake driving device comprises a lifting plate arranged on the front side of the automobile body, a brake pad cooling device is arranged on the brake driving device and used for braking and cooling the brake pad, the cooling capacity can be automatically adjusted according to the heat generated by the braking, a cooling water adjusting device positioned on the lower side of the brake pad cooling device is arranged on the brake driving device and used for changing the condensation rate of a refrigerant according to the heat generated by the braking, the waste water generated by cooling can be recycled, and the cooling water adjusting device comprises a main water tank fixedly connected to the rear side end face of the lifting plate, the brake disc cooling and water collecting device comprises two sliding cylinders which are fixedly connected to the rear end face of the lifting plate and are symmetrical up and down, an auxiliary evaporator is connected in the sliding cylinders in a sliding mode, a spring is connected between the auxiliary evaporator and the sliding cylinders, and a rainwater collecting disc is fixedly connected to the front end face of the auxiliary evaporator, the spring is internally provided with a water collecting cavity with an opening facing backwards and facing upwards, and three fixing blocks are distributed on the inner wall of the front side of the water collecting cavity in an annular array manner.

2. A vehicle disc brake cooling treatment device according to claim 1, wherein: the lifting plate is located on the front side of the tire, a hydraulic cylinder mechanism is fixedly connected to the end face of the front side of the vehicle body, a hydraulic rod extending forwards is arranged in the hydraulic cylinder mechanism, and the hydraulic rod is fixedly connected with the lifting plate.

3. A vehicle disc brake cooling treatment device according to claim 1, wherein: the brake pad cooling device comprises a compressor fixedly connected to the rear end face of the lifting plate, a rheostat is arranged on the upper end face of the compressor and can adjust the current amount of the compressor so as to control the power of the compressor, a piston rod extending rightwards is arranged on the right side of the rheostat, a piston cylinder positioned on the right side of the rheostat is fixedly connected to the rear end face of the lifting plate, a piston cavity with an opening facing left is arranged in the piston cylinder, a piston is connected in the piston cavity in a sliding mode and extends into the piston cavity, the piston rod is fixedly connected with the left end face of the piston, a compression spring is connected between the piston and the left inner wall of the piston cavity, an evaporator is fixedly connected to the rear end face of the lifting plate, and refrigerants are stored in the evaporator and the auxiliary evaporator, the evaporator and the compressor are communicated and connected with an output pipe, a temperature measuring box is arranged in the evaporator, fluid with a large thermal expansion coefficient is stored in the temperature measuring box, the temperature measuring box and the piston cavity are communicated and connected with a connecting pipe, and a brake pad is fixedly connected to the end face of the rear side of the evaporator.

4. A vehicle disc brake cooling treatment device according to claim 1, wherein: an auxiliary temperature measuring box is fixedly connected to the inner wall of the lower side of the auxiliary water cavity, fluid with a larger thermal expansion coefficient is stored in the auxiliary temperature measuring box, a sealing plate is connected to the inner wall of the left side of the auxiliary water cavity in a sliding manner and can seal a communicating hole between the auxiliary water cavity and the main water tank, an auxiliary piston cylinder is fixedly connected to the end face of the lower side of the auxiliary water tank, an auxiliary piston cavity communicated with the auxiliary temperature measuring box is arranged in the auxiliary piston cylinder, an auxiliary piston is connected in the auxiliary piston cavity in a sliding manner, an auxiliary compression spring is connected between the auxiliary piston and the inner wall of the lower side of the auxiliary piston cavity, an auxiliary piston rod extending downwards to the end face of the auxiliary piston cavity is fixedly connected to the end face of the lower side of the auxiliary piston, a cross rod located on the lower side of the auxiliary piston cylinder is fixedly connected to the auxiliary piston rod, and, the lifting rod is fixedly connected with the sealing plate, six radiating fins distributed in an array from bottom to top are fixedly connected to the auxiliary water tank, a water collecting tank is communicated and connected to the upper side end face of the auxiliary water tank, the opening of the water collecting tank faces upwards, a condenser is arranged on the inner wall of the upper side of the water collecting tank, a liquid conveying pipe is communicated and connected between the condenser and the compressor, a spray pipe is fixedly connected to the rear end face of the lifting plate, seven spray heads are distributed in an array from left to right on the lower side end face of the spray pipe, the openings of the spray heads face downwards, a water conveying pipe is communicated and connected between the spray pipe and the water pump, a valve body positioned on the lower side of the auxiliary piston cylinder is arranged on the water conveying pipe, a valve body cavity communicated with the water conveying pipe is arranged in the valve body, a valve core is slidably connected to, and the end surface of the upper side of the valve core is fixedly connected with a connecting rod which extends upwards to the outside of the end surface of the cavity of the valve body, and the connecting rod is fixedly connected with the cross rod.

5. The vehicle disc brake cooling device according to claim 4, wherein: four balls are arranged on the end surface of the rear side of the fixed block, a soft rain wiping plate is fixedly connected on the end surface of one side of the fixed block, the soft rain wiping plate is used for wiping off rainwater on the front end face of the brake disc, the soft rain wiping plate on the upper side is fixedly connected to the right end face of the fixed block on the upper side, the soft rain wiping plate on the lower side is fixedly connected to the left end face of the fixed block on the lower side, the water collecting cavity is communicated and connected with the main water tank through a conveying pipe, the upper side end face of the condenser is communicated and connected with an auxiliary liquid conveying pipe, a four-way valve is arranged on the auxiliary infusion tube, an input tube is communicated and connected between the four-way valve and the auxiliary evaporator on the upper side, the input pipe is communicated with the evaporator and is connected with an auxiliary input pipe, the auxiliary input pipe is communicated with the auxiliary evaporator on the lower side, and the auxiliary evaporator is communicated with the evaporator and is connected with an auxiliary conveying pipe.