CN112776768B - Brake disc overheat automatic braking device for automobile - Google Patents

Abstract

The invention discloses an overheating automatic braking device for a brake disc for an automobile, which comprises a tire, a wheel hub is fixedly installed on the inner ring of the tire, a coupling is fixedly installed on one side of the wheel hub, a rotating shaft is fixedly installed on one side of the coupling, and the rotating shaft is fixed on the rotating shaft. The installation box is sleeved with a rotary connection. The present invention is provided with a heat-conducting rod and an annular heat-dissipating box. During normal braking, the heat is transferred to the water in the annular heat-dissipating box, and the water is recycled through the water inlet pipe and the drain pipe. In order to avoid water spilling on the road surface, thereby avoiding the pollution of the road surface, and avoiding the occurrence of fines, it is provided with a second fixing ring, and the brake ring realizes the function of squeezing from both sides to the middle, and is provided with a piston cylinder to utilize heat The steam generated, under the action of air pressure, makes the two squeeze the brake disc more and more tightly, so as to realize the function of emergency braking, the operation is simple and convenient, the service life is long, and the safety of the car is greatly increased.

Description

An automatic braking device for automobile brake disc overheating

technical field

The invention relates to the technical field of automobile braking systems, in particular to an automobile brake disc overheating automatic braking device.

Background technique

Automobile braking system refers to a series of special devices that exert a certain force on some parts of the car (mainly the wheels), so as to perform a certain degree of forced braking on it. The function of the braking system is: to make the moving car decelerate or even stop according to the driver's request; to make the parked car park stably under various road conditions (including on the slope); to make the car driving downhill. The speed remains stable.

It can be seen from the foregoing description that tends to define the automobile braking system: the automobile braking system refers to the special braking system installed on the automobile in order to technically ensure the safe driving of the automobile and improve the average speed of the automobile. mechanism. Generally speaking, the automobile braking system includes two independent devices, the service braking device and the parking braking device. Among them, the service brake device is operated by the driver's foot, so it is also called the foot brake device. The parking brake device is operated by the driver's hand, so it is also called the hand brake device (habitually called "hand brake").

In an automobile braking system, a brake is a component in an automobile braking system that is used to generate a force that resists the movement or tendency of a vehicle to move. The brakes used in cars are friction brakes, that is, the braking torque that prevents the movement of the car is derived from the friction between the stationary element and the rotating working surface.

Most of the existing automobile braking devices use the brake disc to contact the brake pads to form a complete braking process. During the braking process, the brake disc is often overheated, resulting in the failure of the brakes and the occurrence of safety accidents. Therefore, it is necessary to cool down the brake device, and most of the existing cooling methods use water spraying, but there are some defects. First, installing a water spraying device on a car is illegal modification, and often faces the problem of fines; secondly, long-term watering Braking has a great impact on the service life of the brake disc, reducing the service life of the brake disc. In addition, the existing brake devices lack emergency braking measures after the brake disc brake fails.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned problems, an object of the present invention is to provide an automatic brake disc overheating braking device for automobiles that contributes to the realization of a good emergency braking function.

The purpose of the present invention is accomplished in this way, an automatic braking device for an automobile brake disc overheating, comprising a tire, a wheel hub is fixedly installed on the inner ring of the tire, a coupling is fixedly installed on one side of the wheel hub, and the connecting A rotating shaft is fixedly installed on one side of the shaft, and a rotatably connected installation box is sleeved on the rotating shaft. The top of the installation box is evenly and fixedly connected with four support rods, and a water tank is fixedly connected between the tops of the four support rods. A plurality of sets of radiating fins are fixedly installed on the outer walls of both sides of the water tank, a built-in water pump is fixedly installed in the water tank, a cooling fan is fixedly installed on the outer wall of one side of the water tank, and a water supply pipe is fixedly connected to the top of one side of the water tank , a valve is fixedly installed on the water supply pipe, a connecting water pipe is fixedly connected to one side of the bottom end of the water tank, a water inlet pipe and a drain pipe are fixedly connected to the other side of the bottom end of the water tank, and one side of the top end of the installation box is fixed There is a movable slot, a braking rod is arranged in the movable slot, a sliding slot is arranged on the braking rod, and a movable pin for sliding connection is inserted into the sliding slot, and the two ends of the movable pin respectively extend into the movable slot. The inner walls on both sides of the groove are connected in rotation with them, the bottom end of the braking rod extends into the installation box, two positioning rods are symmetrically and fixedly connected on the inner wall of one side of the installation box, and the positioning rods are respectively sleeved with positioning rods. Sleeve, a brake ring is fixedly connected to one side bracket of two positioning sleeves, and a first U-shaped block is fixedly connected to the top of one of the positioning sleeves, and a first hinge pin is arranged in the first U-shaped block. The bottom end of the moving rod extends into the first U-shaped block, the bottom end of the braking rod is hinged with the first U-shaped block through a first hinge pin, a sliding groove is provided on one side wall of the braking rod, and the sliding A sliding block is slidably connected in the groove, a spring is arranged in the sliding groove, the top end of the spring is fixedly connected with the bottom end of the sliding block, the bottom end of the spring is fixedly connected with the inner bottom surface of the sliding groove, and the sliding block is a dovetail block, The chute is a dovetail slot, a second U-shaped block is fixedly connected to one side wall of the sliding block, a second hinge pin is arranged in the second U-shaped block, and a second U-shaped block is arranged in the second U-shaped block. A pull rod, the pull rod and the second U-shaped block are hinged through a second hinge pin, a bearing is provided at the connection between the installation box and the rotating shaft, the bearing is fixedly installed on the installation box, and the inner top surface of the installation box is fixedly installed There is a fixing rod, the bottom end of the fixing rod is fixedly installed with a stabilizing sleeve, one end of the tie rod passes through the stabilizing sleeve and is slidably connected with it, and the inner top surface and the inner bottom surface of the installation box are fixedly installed with an L-shaped fixing sleeve. A mounting ring is fixedly connected between the other ends of the two L-shaped fixing rods. Mounting grooves are symmetrically arranged on one side wall of the mounting ring. Each mounting groove is fixedly installed with an electric telescopic rod. Two electric telescopic rods A first fixing ring is fixedly connected between the output ends of the heating ring, a heating ring is fixedly connected on one side of the first fixing ring, an annular cavity is arranged in the heating ring, and the other end of the heating ring is fixedly connected with a second ring. A fixing ring, the bottom end of the connecting water pipe extends into the installation box and is fixedly connected and communicated with the annular cavity, the connecting water pipe is a hose, and a plurality of insertion rods are fixedly connected to the first fixing ring, and the A plurality of sockets are fixedly arranged on the mounting ring, and a plurality of insertion rods are respectively arranged opposite to the shaft centers of the sockets. The rods respectively extend into the corresponding jacks and are slidably connected with them. A connecting pipe is fixedly connected to the heating ring, and the connecting pipe is communicated with the annular cavity. A piston cylinder is fixedly installed on the top surface of the installation box. A piston block is slidably connected in the piston cylinder, one end of the tie rod extends into the piston cylinder and is fixedly connected to the side wall of the piston block, a sealing ring is provided at the connection between the tie rod and the piston cylinder, and the sealing ring is fixedly installed on the piston cylinder. On the cylinder, the top end of the connecting pipe is fixedly connected and communicated with the bottom end of the piston cylinder, the other end of the piston cylinder is provided with an exhaust hole, the top of the piston cylinder is fixedly connected with an exhaust pipe, and the exhaust pipe The top end goes out of the installation box, a solenoid valve is fixedly installed on the exhaust pipe, two brake discs are fixedly sleeved on the rotating shaft, and the two brake discs are arranged between the brake ring and the second fixing ring. An annular heat dissipation box is fixedly connected between the brake discs, and a plurality of heat conduction rods are arranged in the annular heat dissipation box, and both ends of the plurality of heat conduction rods respectively pass through the annular heat dissipation box and are fixedly connected with the opposite side walls of the two brake discs. A rotating ring for sealing and rotating connection is inserted on the outer ring wall of the annular heat sink. The cross section of the rotating ring is I-shaped. connection, the water inlet pipe and the drain pipe are respectively communicated with the rotating ring, and the water inlet pipe and the drain pipe are made of hard pipes.

Preferably, the cooling fan and the electric telescopic rod are all electrically connected to the vehicle-mounted circuit through a circuit.

Preferably, the plunger is made of hard alloy material.

Preferably, the connecting pipe is arranged between the piston block and the sealing ring.

Preferably, the solenoid valve on the exhaust pipe is electrically connected to the vehicle power supply through a line.

Preferably, the heat conducting rod is made of alloy material.

Compared with the prior art, the beneficial effects of the present invention are: the present invention is provided with a heat-conducting rod and an annular heat-dissipating box, during normal braking, the heat is transferred to the water in the annular heat-dissipating box, and the heat is transferred to the water in the annular heat-dissipating box through the water inlet pipe and the drain pipe. Realize the recycling of water, so as to avoid the pollution of the road caused by the water spilling on the road. The second fixing ring and the brake ring are arranged to realize the function of squeezing from both sides to the middle, and a piston cylinder is arranged to use the heat generated by the steam in the air pressure. Under the action of the brake, the two squeeze the brake disc more and more tightly, so as to realize the function of emergency braking, the operation is simple and convenient, the service life is long, and the safety of the car can be significantly increased.

Description of drawings

Figure 1 is a schematic diagram of the present invention.

FIG. 2 is an enlarged view of part A of FIG. 1 .

FIG. 3 is an enlarged view of part B of FIG. 1 .

FIG. 4 is an enlarged view of a portion C of FIG. 1 .

FIG. 5 is an enlarged view of part D of FIG. 1 .

FIG. 6 is a side view of the mounting ring of FIG. 1 .

FIG. 7 is a side view of the water inlet pipe of FIG. 1 .

FIG. 8 is a side view of the brake disc of FIG. 1 .

In the figure: tire 1, wheel hub 2, coupling 3, rotating shaft 4, installation box 5, support rod 6, water tank 7, heat sink 8, built-in water pump 9, cooling fan 10, connecting water pipe 11, water inlet pipe 12, drain pipe 13. Active groove 14, brake rod 15, sliding groove 16, active pin 17, positioning rod 18, positioning sleeve 19, brake ring 20, fixed rod 21, stable sleeve 22, bearing 23, L-shaped fixed rod 24, Mounting ring 25, mounting groove 26, electric telescopic rod 27, first fixing ring 28, heating ring 29, annular cavity 30, second fixing ring 31, first hinge pin 32, first U-shaped block 33, chute 34 , slider 35, second U-shaped block 36, pull rod 37, second hinge pin 38, spring 39, exhaust pipe 40, piston cylinder 41, sealing ring 42, piston block 43, connecting pipe 44, insert rod 45, insert Hole 46 , brake disc 47 , annular heat dissipation box 48 , heat conduction rod 49 , rotating ring 50 .

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments:

Please refer to FIGS. 1 to 8 , an automatic braking device for an automobile brake disc overheating, comprising a tire 1, a wheel hub 2 is fixedly mounted on the inner ring of the tire 1, and a coupling 3 is fixedly mounted on one side of the wheel hub 2, A rotating shaft 4 is fixedly installed on one side of the coupling 3, and a rotatably connected installation box 5 is sleeved on the rotating shaft 4. The top of the installation box 5 is evenly and fixedly connected with four support rods 6. The four support rods 6. A water tank 7 is fixedly connected between the top ends, and a plurality of groups of radiating fins 8 are fixedly installed on the outer walls of both sides of the water tank 7. A built-in water pump 9 is fixedly installed in the water tank 7, and the outer wall of one side of the water tank 7 is fixed A cooling fan 10 is installed, a water supply pipe is fixedly connected to the top of one side of the water tank 7, a valve is fixedly installed on the water supply pipe, a connecting water pipe 11 is fixedly connected to the bottom end of the water tank 7, and the bottom end of the water tank 7 is fixedly connected. The other side is fixedly connected with the water inlet pipe 12 and the drain pipe 13 respectively, the top side of the installation box 5 is provided with a movable groove 14, the movable groove 14 is provided with a brake rod 15, and the brake rod 15 is provided with There is a sliding slot 16, and a movable pin 17 for sliding connection is inserted into the sliding slot 16. The two ends of the movable pin 17 respectively protrude into the inner walls on both sides of the movable slot 14 and are rotatably connected with it. The bottom of the brake lever 15 The end protrudes into the installation box 5, and two positioning rods 18 are symmetrically and fixedly connected to the inner wall of one side of the installation box 5. The two positioning rods 18 are respectively sleeved with positioning sleeves 19. One side of the two positioning sleeves 19 The bracket is fixedly connected with the brake ring 20 , the top of one of the positioning sleeves 19 is fixedly connected with a first U-shaped block 33 , and the first U-shaped block 33 is provided with a first hinge pin 32 , and the bottom end of the brake lever 15 Protruding into the first U-shaped block 33, the bottom end of the brake lever 15 is hinged with the first U-shaped block 33 through the first hinge pin 32, and a sliding groove 34 is provided on one side wall of the brake lever 15, so A slider 35 is slidably connected in the chute 34, a spring 39 is arranged in the chute 34, the top end of the spring 39 is fixedly connected with the bottom end of the slider 35, and the bottom end of the spring 39 is fixed with the inner bottom surface of the chute 34. The sliding block 35 is a dovetail block, the sliding groove 34 is a dovetail groove, a second U-shaped block 36 is fixedly connected to a side wall of the sliding block 35, and a second U-shaped block 36 is arranged in the second U-shaped block 36. The second hinge pin 38, the second U-shaped block 36 is provided with a pull rod 37, the pull rod 37 and the second U-shaped block 36 are hinged through the second hinge pin 38, and the connection between the installation box 5 and the rotating shaft 4 is provided There is a bearing 23, the bearing 23 is fixedly installed on the installation box 5, a fixing rod 21 is fixedly installed on the inner top surface of the installation box 5, and a stabilizing sleeve 22 is fixedly installed at the bottom end of the fixing rod 21. One end of 37 passes through the stabilizing sleeve 22 and is slidably connected to it, the inner top surface and the inner bottom surface of the installation box 5 are fixedly installed with an L-shaped fixing rod 24, and the other ends of the two L-shaped fixing rods 24 are fixedly connected with each other. Mounting ring 25, a side wall of the mounting ring 25 is symmetrically provided with mounting grooves 26, each mounting groove 26 is fixedly installed with an electric telescopic rod 27, and the output ends of the two electric telescopic rods 27 are fixedly connected with a The first fixing ring 28, one side of the first fixing ring 28 is fixedly connected with a heating ring 29, the heating ring 29 is provided with an annular cavity 30, and the other end of the heating ring 29 is fixedly connected with a second fixing ring 31. The bottom end of the connecting water pipe 11 extends into the installation box 5 and is fixedly connected and communicated with the annular cavity 30. The connecting water pipe 11 is a hose, and the first fixing ring 28 is fixedly connected with a plurality of plugs. Rod 45, a plurality of insertion holes 46 are fixedly arranged on the mounting ring 25, the plurality of insertion rods 45 are respectively arranged opposite the axes of the plurality of insertion holes 46, and the plurality of insertion rods 45 respectively extend into the corresponding insertion holes 46 and slidably connected with it, the heating ring 29 is fixedly connected with a connecting pipe 44, the connecting pipe 44 communicates with the annular cavity 30, and a piston cylinder 41 is fixedly installed on the inner top surface of the installation box 5, and the piston cylinder A piston block 43 is slidably connected in the 41, and one end of the pull rod 37 extends into the piston cylinder 41 and is fixedly connected to the side wall of the piston block 43. A sealing ring 42 is provided at the connection between the pulling rod 37 and the piston cylinder 41. The sealing ring 42 is fixedly installed on the piston cylinder 41, the top end of the connecting pipe 44 is fixedly connected and communicated with the bottom end of the piston cylinder 41, the other end of the piston cylinder 41 is provided with an exhaust hole, and the top end of the piston cylinder 41 is fixedly connected There is an exhaust pipe 40 , the top of the exhaust pipe 40 protrudes out of the installation box 5 , a solenoid valve is fixedly installed on the exhaust pipe 40 , and two brake discs 47 are fixedly sleeved on the rotating shaft 4 . The brake disc 47 is arranged between the brake ring 20 and the second fixing ring 31 , and an annular heat dissipation box 48 is fixedly connected between the two brake discs 47 . Both ends of the rod 49 respectively pass through the annular heat dissipation box 48 and are fixedly connected with the opposite side walls of the two brake discs 47. A rotating ring 50 for sealing and rotating connection is inserted on the outer ring wall of the annular heat dissipation box 48. The rotating ring 50 The cross section is I-shaped, the bottom ends of the water inlet pipe 12 and the drain pipe 13 both extend into the installation box 5 and are fixedly connected to both sides of the top of the rotating ring 50, and the water inlet pipe 12 and the drain pipe 13 are respectively communicated with the rotating ring 50. , the water inlet pipe 12 and the drain pipe 13 are hard pipes.

The cooling fan 10 and the electric telescopic rod 27 are all electrically connected to the vehicle-mounted circuit through a circuit.

The insertion rod 45 is made of hard alloy material.

The connecting pipe 44 is arranged between the piston block 43 and the sealing ring 42 .

The solenoid valve on the exhaust pipe 40 is electrically connected to the vehicle power supply through a circuit.

The heat conducting rod 49 is made of alloy material.

Working principle: When the device needs to be used, first place the device in the working area, and then install it. After installation, turn on the power of each driver in the device to make it in a standby state, so that the device can be used normally.

When braking normally, the operator directly steps on the indoor brake when braking, and then offsets the brake lever 15 through the existing transmission device, so that the positioning sleeve 19 starts to move, so that the brake ring 20 is positioned in the opposite direction. The brake disc 47 on the right is squeezed (described by the position in FIG. 1 ) to form a brake, and the heat formed by the brake is transferred to the water in the annular heat dissipation box 48 through the heat conduction rod 49 , and the water in the annular heat dissipation box 48 . Circulation is carried out through the water inlet pipe 12 and the drain pipe 13, and the cooling fins 8 and the cooling fan 10 are provided on both sides of the water tank 7 to ensure the cooling of the water in the water tank 7, so that the cooling function of the brake disc 47 is realized. When the cooling function reaches the limit , that is, when the brake cannot be completely braked, the two electric telescopic rods 27 in the two installation grooves 26 are activated at this time, so that the two electric telescopic rods 27 start to stretch, and the first fixed ring 28, the heating ring 29 and the first fixed ring 28 are moved. The second fixing ring 31 starts to move, so as to squeeze with the left brake disc 47 to form a secondary braking, and the annular cavity 30 is filled with water. The heat generated will be transferred to the water in the annular cavity 30 through the second fixing ring 31 , and a part of the heat generated when the brake ring 20 squeezes the brake disc 47 on the right side will also be transferred to the annular cavity 30 . The water in the annular cavity 30 heats the water in the annular cavity 30. Due to the huge heat, the water evaporates into gas and enters the piston cylinder 41 along the connecting pipe 44. The air pressure in the piston cylinder 41 increases and pushes the piston block 43 to the left. , so that the pull rod 37 further pulls the brake rod 15 to the left, and the side wall of the brake rod 15 is provided with a chute 34 and a slider 35 to ensure the normal operation of the device, and a second U-shaped block is provided. 36 and the second hinge pin 38, so that the pull rod 37 can maintain the pulling force to the left without the occurrence of bending torque, so that the two brake discs 47 are subjected to the force of pressing both sides to the middle at the same time, so that more and more To achieve the function of emergency braking, a plurality of insertion rods 45 and sockets 46 are provided to avoid driving the brake disc 47 to rotate when it is closely fitted with the second fixing ring 31. Through the setting of the plurality of insertion rods 45, The rotation of the second fixing ring 31 can be well prevented to ensure the normal use of the device, thus ensuring the braking performance of the vehicle. During normal braking, because the connecting pipe 44 communicates with the annular cavity 30, the annular cavity 30 By connecting the water pipe 11 and the water tank 7, a passage can be formed to ensure that the air pressure in the piston cylinder 41 is stable, and only when the connecting pipe 44 is inflated into the piston cylinder 41, due to the lack of passage, the air pressure in the piston cylinder 41 is increased, Thereby, the braking effect of the device is realized, and an exhaust hole is arranged on one side wall of the piston cylinder 41 to ensure the normal use of the piston cylinder 41. When the car is completely stopped, the electromagnetic solenoid on the exhaust pipe 40 is turned on through the switch in the vehicle. The valve is discharged, and the device is reset to release the brake. The operation is simple and convenient, the service life is long, and the safety of the car is greatly increased.

The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and the descriptions in the above-mentioned embodiments and the description are only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have Various changes and modifications fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. An automatic brake device for overheat of a brake disc for an automobile comprises a tire (1), wherein a wheel hub (2) is fixedly mounted on the inner ring of the tire (1), a coupler (3) is fixedly mounted on one side of the wheel hub (2), a rotating shaft (4) is fixedly mounted on one side of the coupler (3), and a mounting box (5) in rotary connection is sleeved on the rotating shaft (4); the mounting box is characterized in that four supporting rods (6) are uniformly and fixedly connected to the top end of the mounting box (5), a water tank (7) is fixedly connected between the top ends of the four supporting rods (6), a plurality of groups of radiating fins (8) are fixedly mounted on the outer walls of two sides of the water tank (7), a built-in water pump (9) is fixedly mounted in the water tank (7), a radiating fan (10) is fixedly mounted on the outer wall of one side of the water tank (7), a water feeding pipe is fixedly connected to the top of one side of the water tank (7), a valve is fixedly mounted on the water feeding pipe, a connecting water pipe (11) is fixedly connected to one side of the bottom end of the water tank (7), a water inlet pipe (12) and a water outlet pipe (13) are respectively and fixedly connected to the other side of the bottom end of the mounting box (5), a movable groove (14) is formed in one side of the top end of the movable groove (14), a brake rod (15) is arranged in the movable groove (14), and a sliding groove (16) is formed in the brake rod (15), the brake device is characterized in that a sliding-connection movable pin (17) is inserted into the sliding groove (16), two ends of the movable pin (17) respectively extend into inner walls of two sides of the movable groove (14) and are rotatably connected with the inner walls, the bottom end of the brake rod (15) extends into the installation box (5), two positioning rods (18) are symmetrically and fixedly connected with the inner wall of one side of the installation box (5), positioning sleeves (19) are respectively sleeved on the two positioning rods (18), a brake ring (20) is fixedly connected with a support on one side of each of the two positioning sleeves (19), a first U-shaped block (33) is fixedly connected with the top end of one of the two positioning sleeves (19), a first hinge pin (32) is arranged in the first U-shaped block (33), the bottom end of the brake rod (15) extends into the first U-shaped block (33), and is hinged with the first U-shaped block (33) through the first hinge pin (32), the brake device is characterized in that a sliding groove (34) is formed in one side wall of the brake rod (15), a sliding block (35) is connected in the sliding groove (34) in a sliding mode, a spring (39) is arranged in the sliding groove (34), the top end of the spring (39) is fixedly connected with the bottom end of the sliding block (35), the bottom end of the spring (39) is fixedly connected with the inner bottom surface of the sliding groove (34), the sliding block (35) is a dovetail block, the sliding groove (34) is a dovetail groove, a second U-shaped block (36) is fixedly connected to one side wall of the sliding block (35), a second hinge pin (38) is arranged in the second U-shaped block (36), a pull rod (37) is arranged in the second U-shaped block (36), the pull rod (37) is hinged to the second U-shaped block (36) through the second hinge pin (38), a bearing (23) is arranged at the joint of the installation box (5) and the rotating shaft (4), and the bearing (23) is fixedly installed on the installation box (5), the fixing device is characterized in that a fixing rod (21) is fixedly mounted on the inner top surface of the mounting box (5), a stabilizing sleeve (22) is fixedly mounted at the bottom end of the fixing rod (21), one end of a pull rod (37) penetrates through the stabilizing sleeve (22) and is in sliding connection with the stabilizing sleeve, L-shaped fixing rods (24) are fixedly mounted on the inner top surface and the inner bottom surface of the mounting box (5), a mounting ring (25) is fixedly connected between the other ends of the two L-shaped fixing rods (24), mounting grooves (26) are symmetrically arranged on one side wall of the mounting ring (25), an electric telescopic rod (27) is fixedly mounted in each mounting groove (26), a first fixing ring (28) is fixedly connected between the output ends of the two electric telescopic rods (27), a heating ring (29) is fixedly connected to one side of the first fixing ring (28), an annular cavity (30) is arranged in the heating ring (29), and a second fixing ring (31) is fixedly connected to the other end of the heating ring (29), the bottom of connecting water pipe (11) stretches into in install bin (5) and with annular cavity (30) fixed connection and communicate with each other, it is the hose to connect water pipe (11), a plurality of inserted bars (45) of fixedly connected with on first solid fixed ring (28), fixedly on collar (25) be provided with a plurality of jacks (46), a plurality of inserted bars (45) set up with a plurality of jacks (46) axle center respectively relatively, a plurality of inserted bars (45) stretch into corresponding jack (46) respectively and rather than sliding connection, fixedly connected with connecting pipe (44) on heating ring (29), connecting pipe (44) communicate with each other with annular cavity (30), fixed mounting has piston cylinder (41) on the top surface in install bin (5), sliding connection has piston piece (43) in piston cylinder (41), the one end of pull rod (37) stretches into in piston cylinder (41) and piston piece (43) lateral wall fixed connection, pull rod (37) and piston cylinder (41) junction are provided with sealing washer (42), sealing washer (42) fixed mounting is on piston cylinder (41), the top and piston cylinder (41) bottom fixed connection of connecting pipe (44) communicate with each other, be provided with the exhaust hole on the other end of piston cylinder (41), piston cylinder (41) top fixedly connected with blast pipe (40), outside installation case (5) was worn out on blast pipe (40) top, fixed mounting has the solenoid valve on blast pipe (40), fixed cup joint two brake discs (47) on pivot (4), two brake discs (47) set up between brake ring (20) and second solid fixed ring (31), fixedly connected with annular heat dissipation case (48) between two brake discs (47), be provided with a plurality of heat conduction poles (49) in annular heat dissipation case (48), annular heat dissipation case (48) are worn out respectively and are relative with two discs (47) at the both ends of a plurality of heat conduction poles (49), and annular heat dissipation case (48) are worn out respectively The side wall is fixedly connected, a rotating ring (50) in sealed rotary connection is inserted into the outer annular wall of the annular heat dissipation box (48), the section of the rotating ring (50) is in an I-shaped shape, the bottom ends of the water inlet pipe (12) and the water outlet pipe (13) extend into the installation box (5) and are fixedly connected with the two sides of the top end of the rotating ring (50), the water inlet pipe (12) and the water outlet pipe (13) are respectively communicated with the rotating ring (50), and the water inlet pipe (12) and the water outlet pipe (13) are made of hard pipes.

2. The automatic brake device for the overheat of the brake disc for the automobile according to claim 1, wherein: the cooling fan (10) and the electric telescopic rod (27) are electrically connected with the vehicle-mounted circuit through circuits.

3. The automatic brake device for the overheat of the brake disc for the automobile according to claim 1, wherein: the inserted bar (45) is made of hard alloy materials.

4. The automatic brake device for the overheat of the brake disc for the automobile according to claim 1, wherein: the connecting pipe (44) is arranged between the piston block (43) and the sealing ring (42).

5. The automatic brake device for the overheat of the brake disc for the automobile according to claim 1, wherein: and the electromagnetic valve on the exhaust pipe (40) is electrically connected with a vehicle-mounted power supply through a circuit.

6. The automatic brake device for the overheat of the brake disc for the automobile according to claim 1, wherein: the heat conducting rod (49) is made of alloy materials.

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