CN112776768B

CN112776768B - Brake disc overheat automatic braking device for automobile

Info

Publication number: CN112776768B
Application number: CN202110201318.6A
Authority: CN
Inventors: 赵付舟
Original assignee: Changshu Institute of Technology
Current assignee: Changshu Institute of Technology
Priority date: 2021-02-23
Filing date: 2021-02-23
Publication date: 2022-04-29
Anticipated expiration: 2041-02-23
Also published as: CN112776768A

Abstract

The invention discloses an automatic brake device for overheat of a brake disc for an automobile, which comprises a tire, wherein a wheel hub is fixedly arranged on an inner ring of the tire, a coupling is fixedly arranged on one side of the wheel hub, a rotating shaft is fixedly arranged on one side of the coupling, and a rotatably connected installation box is sleeved on the rotating shaft. The operation is simple and convenient, the service life is long, and the running safety of the automobile is greatly improved.

Description

Brake disc overheat automatic braking device for automobile

Technical Field

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

Background

A vehicle brake system refers to a series of special devices that apply a certain force to certain parts of the vehicle (mainly the wheels) so as to apply a certain degree of forced braking thereto. The braking system has the following functions: the running automobile is forced to decelerate or even stop according to the requirement of a driver; stably parking a stopped vehicle under various road conditions (including on a slope); the speed of the vehicle running on the downhill is kept stable.

From the preceding description, which is intended to be definitional with respect to automotive brake systems, it is known that: the automobile brake system is a special brake mechanism installed in an automobile to technically ensure safe driving of the automobile, increase the average speed of driving of the automobile, and the like. Generally, a vehicle brake system includes two independent sets of a service brake device and a parking brake device. Among them, the service brake device is operated by the foot of the driver, so it is also called foot brake device. The parking brake device is operated by a hand of a driver, and is also called a hand brake device (conventionally called a "hand brake").

In automotive brake systems, brakes are components of the automotive brake system that are used to generate forces that resist the movement or tendency of the vehicle to move. Brakes used in vehicles are all friction brakes, i.e. the braking torque that resists movement of the vehicle is derived from the friction between the stationary element and the rotating work surface.

Most of the existing automobile braking devices adopt the contact of a brake disc and a brake pad to form a complete braking process, and the brake disc is overheated frequently in the braking process, so that the brake fails to work and safety accidents occur, therefore, the temperature reduction treatment needs to be carried out on the brake braking devices, and most of the existing temperature reduction methods adopt a water spraying method, but have some defects; secondly, long-term watering braking causes very big influence to the life of brake disc, reduces the life of brake disc. Furthermore, existing braking devices lack emergency braking measures after a brake disc brake failure.

Disclosure of Invention

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

The invention aims to provide an automatic brake device for overheating of a brake disc for an automobile, which comprises a tire, wherein a wheel hub is fixedly arranged on an inner ring of the tire, a coupling is fixedly arranged on one side of the wheel hub, a rotating shaft is fixedly arranged on one side of the coupling, a rotatably connected installation box is sleeved on the rotating shaft, four support rods are uniformly and fixedly connected to the top end of the installation box, a water tank is fixedly connected between the top ends of the four support rods, a plurality of groups of radiating fins are fixedly arranged on the outer walls of two sides of the water tank, a built-in water pump is fixedly arranged in the water tank, a radiating fan is fixedly arranged on the outer wall of one side of the water tank, a water feeding pipe is fixedly connected to the top of one side of the water tank, a valve is fixedly arranged on the water feeding pipe, a connecting water pipe is fixedly connected to one side of the bottom end of the water tank, and a water inlet pipe and a water outlet pipe are respectively fixedly connected to the other side of the bottom end of the water tank, a movable groove is arranged on one side of the top end of the installation box, a brake bar is arranged in the movable groove, a sliding groove is arranged on the brake bar, a sliding-connection movable pin is inserted in the sliding groove, two ends of the movable pin respectively extend into the inner walls on two sides of the movable groove and are rotationally connected with the movable groove, the bottom end of the brake bar extends into the installation box, two positioning rods are symmetrically and fixedly connected with the inner wall on one side of the installation box, positioning sleeves are respectively sleeved on the two positioning rods, a brake ring is fixedly connected with a support on one side of the two positioning sleeves, a first U-shaped block is fixedly connected with the top end of one positioning sleeve, a first hinge pin is arranged in the first U-shaped block, the bottom end of the brake bar extends into the first U-shaped block, the bottom end of the brake bar is hinged with the first U-shaped block through the first hinge pin, a sliding groove is arranged on one side wall of the brake bar, and a sliding block is slidably connected in the sliding groove, a spring is arranged in the chute, the top end of the spring is fixedly connected with the bottom end of a sliding block, the bottom end of the spring is fixedly connected with the inner bottom surface of the chute, the sliding block is a dovetail block, the chute is a dovetail groove, a second U-shaped block is fixedly connected onto one side wall of the sliding block, a second hinge pin is arranged in the second U-shaped block, a pull rod is arranged in the second U-shaped block, the pull rod is hinged with the second U-shaped block through the second hinge pin, a bearing is arranged at the joint of the installation box and the rotating shaft, the bearing is fixedly arranged on the installation box, a fixed rod is fixedly arranged on the top surface in the installation box, a stabilizing sleeve is fixedly arranged at the bottom end of the fixed rod, one end of the pull rod penetrates through the stabilizing sleeve and is in sliding connection with the stabilizing sleeve, L-shaped fixed rods are fixedly arranged on the inner top surface and the inner bottom surface of the installation box, and an installation ring is fixedly connected between the other ends of the two L-shaped fixed rods, the installation structure comprises an installation ring and a plurality of insertion rods, wherein the installation ring is characterized in that installation grooves are symmetrically arranged on one side wall of the installation ring, an electric telescopic rod is fixedly arranged in each installation groove, a first fixing ring is fixedly connected between the output ends of the two electric telescopic rods, a heating ring is fixedly connected to one side of the first fixing ring, an annular cavity is arranged in the heating ring, a second fixing ring is fixedly connected to the other end of the heating ring, the bottom end of each connection water pipe extends into an installation box and is fixedly connected and communicated with the annular cavity, each connection water pipe is a hose, a plurality of insertion rods are fixedly connected to the first fixing ring, a plurality of insertion holes are fixedly arranged on the installation ring, the insertion rods are respectively arranged opposite to the axes of the plurality of insertion holes, the plurality of insertion rods respectively extend into the corresponding insertion holes and are in sliding connection with the corresponding insertion holes, a connection pipe is fixedly connected to the heating ring, the connection pipe is communicated with the annular cavity, and a piston cylinder is fixedly installed on the top surface in the installation box, the piston cylinder is internally and slidably connected with a piston block, one end of a pull rod extends into the piston cylinder and is fixedly connected with the side wall of the piston block, a sealing ring is arranged at the joint of the pull rod and the piston cylinder, the sealing ring is fixedly arranged on the piston cylinder, the top end of a 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 end of the piston cylinder is fixedly connected with an exhaust pipe, the top end of the exhaust pipe penetrates out of the installation box, an electromagnetic valve is fixedly arranged on the exhaust pipe, two brake discs are fixedly sleeved on a rotating shaft and are arranged between a brake ring and a second fixing ring, an annular heat dissipation box is fixedly connected between the two brake discs, a plurality of heat conducting rods are arranged in the annular heat dissipation box, and two ends of the plurality of the heat conducting rods respectively penetrate out of the annular heat dissipation box and are fixedly connected with the opposite side walls of the two brake discs, the water inlet pipe and the water outlet pipe are respectively communicated with the rotating ring, and the water inlet pipe and the water outlet pipe are hard pipes.

Preferably, the cooling fan and the electric telescopic rod are electrically connected with the vehicle-mounted circuit through circuits.

Preferably, the inserted link is made of hard alloy materials.

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

Preferably, the electromagnetic valve on the exhaust pipe is electrically connected with the vehicle-mounted power supply through a circuit.

Preferably, the heat conduction rod is made of alloy materials.

Compared with the prior art, the invention has the beneficial effects that: according to the invention, the heat conducting rod and the annular heat dissipation box are arranged, heat is transferred to water in the annular heat dissipation box during normal braking, and the water is recycled through the water inlet pipe and the water discharge pipe, so that the road surface pollution caused by water falling on the road surface is avoided.

Drawings

FIG. 1 is a schematic of the present invention.

Fig. 2 is an enlarged view of a portion a of fig. 1.

Fig. 3 is an enlarged view of a portion B of fig. 1.

Fig. 4 is an enlarged view of a portion C of fig. 1.

Fig. 5 is an enlarged view of a portion D of fig. 1.

Fig. 6 is a side view of the mounting ring of fig. 1.

Figure 7 is a side view of the inlet pipe of figure 1.

Figure 8 is a side view of the brake disc of figure 1.

In the figure: the device comprises a tire 1, a hub 2, a coupling 3, a rotating shaft 4, a mounting box 5, a support rod 6, a water tank 7, a heat radiating fin 8, a built-in water pump 9, a heat radiating fan 10, a connecting water pipe 11, a water inlet pipe 12, a water outlet pipe 13, a movable groove 14, a brake rod 15, a sliding groove 16, a movable pin 17, a positioning rod 18, a positioning sleeve 19, a brake ring 20, a fixing rod 21, a stabilizing sleeve 22, a bearing 23, an L-shaped fixing rod 24, a mounting ring 25, a mounting groove 26, an electric telescopic rod 27, a first fixing ring 28, a heating ring 29, an annular cavity 30, a second fixing ring 31, a first hinge pin 32, a first U-shaped block 33, a sliding groove 34, a sliding block 35, a second U-shaped block 36, a pull rod 37, a second hinge pin 38, a spring 39, an exhaust pipe 40, a piston cylinder 41, a seal ring 42, a piston block 43, a connecting pipe 44, an insert rod 45, an insert hole 46, a disc 47, an annular heat radiating box 48, a heat conducting rod 49, a heat radiating fin 8, a water pump, the ring 50 is rotated.

Detailed Description

The invention is described in further detail below with reference to the following detailed description and accompanying drawings:

referring to fig. 1 to 8, an automatic brake device for overheat of a brake disc for an automobile comprises a tire 1, wherein a wheel hub 2 is fixedly installed on an inner ring of the tire 1, a coupling 3 is fixedly installed on one side of the wheel hub 2, a rotating shaft 4 is fixedly installed on one side of the coupling 3, a mounting box 5 in rotary connection is sleeved on the rotating shaft 4, four support 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 support rods 6, a plurality of groups of radiating fins 8 are fixedly installed on the outer walls of two sides of the water tank 7, a built-in water pump 9 is fixedly installed in the water tank 7, a radiating fan 10 is fixedly installed 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 installed on the water feeding pipe, and a connecting water pipe 11 is fixedly connected to one side of the bottom end of the water tank 7, the water tank 7 is characterized in that the other side of the bottom end of the water tank 7 is fixedly connected with a water inlet pipe 12 and a water outlet pipe 13 respectively, one side of the top end of the installation box 5 is provided with a movable groove 14, a brake bar 15 is arranged in the movable groove 14, a sliding groove 16 is arranged on the brake bar 15, a sliding connected movable pin 17 is inserted in the sliding groove 16, two ends of the movable pin 17 extend into the inner walls of two sides of the movable groove 14 respectively and are in rotary connection with the movable groove, the bottom end of the brake bar 15 extends into the installation box 5, two positioning rods 18 are symmetrically and fixedly connected to the inner wall of one side of the installation box 5, positioning sleeves 19 are sleeved on the two positioning rods 18 respectively, a brake ring 20 is fixedly connected to a support at one side of the two positioning sleeves 19, the top end of one positioning sleeve 19 is fixedly connected with a first U-shaped block 33, a first hinge pin 32 is arranged in the first U-shaped block 33, and the bottom end of the brake bar 15 extends into the first U-shaped block 33, the bottom end of the brake lever 15 is hinged with a first U-shaped block 33 through a first hinge pin 32, a sliding groove 34 is arranged on one side wall of the brake lever 15, a sliding block 35 is connected in the sliding groove 34 in a sliding manner, 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 on 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 with 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, 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, the bottom ends of the fixing rods 21 are fixedly provided with stabilizing sleeves 22, one end of the pull rod 37 penetrates through the stabilizing sleeves 22 and is in sliding connection with the stabilizing sleeves 22, the top surface and the inner bottom surface in the installation box 5 are fixedly provided with L-shaped fixing rods 24, the other ends of the two L-shaped fixing rods 24 are fixedly connected with an installation ring 25, one side wall of the installation ring 25 is symmetrically provided with installation grooves 26, each installation groove 26 is fixedly provided with an electric telescopic rod 27, a first fixing ring 28 is fixedly connected between the output ends of the two electric telescopic rods 27, one side of the first fixing ring 28 is fixedly connected with a heating ring 29, an annular cavity 30 is arranged in the heating ring 29, 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, a plurality of insertion rods 45 are fixedly connected to the first fixing ring 28, a plurality of insertion holes 46 are fixedly arranged on the mounting ring 25, the plurality of insertion rods 45 are respectively arranged opposite to the axes of the plurality of insertion holes 46, the plurality of insertion rods 45 respectively extend into the corresponding insertion holes 46 and are in sliding connection with the corresponding insertion holes, a connecting pipe 44 is fixedly connected to the heating ring 29, the connecting pipe 44 is communicated with the annular cavity 30, a piston cylinder 41 is fixedly arranged on the top surface in the mounting box 5, a piston block 43 is slidably connected to the piston cylinder 41, one end of a pull rod 37 extends into the piston cylinder 41 and is fixedly connected with the side wall of the piston block 43, a sealing ring 42 is arranged at the joint of the pull rod 37 and the piston cylinder 41, the sealing ring 42 is fixedly arranged 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, and an exhaust hole is arranged at the other end of the piston cylinder 41, the exhaust pipe 40 is fixedly connected to the top end of the piston cylinder 41, the top end of the exhaust pipe 40 penetrates out of the mounting box 5, the electromagnetic valve is fixedly mounted on the exhaust pipe 40, two brake discs 47 are fixedly sleeved on the rotating shaft 4, the two brake discs 47 are arranged between the brake ring 20 and the second fixing ring 31, an annular heat dissipation box 48 is fixedly connected between the two brake discs 47, a plurality of heat conduction rods 49 are arranged in the annular heat dissipation box 48, two ends of the plurality of heat conduction rods 49 respectively penetrate out of the annular heat dissipation box 48 and are fixedly connected with opposite side walls of the two brake discs 47, a rotary ring 50 in sealed rotary connection is inserted into the outer annular wall of the annular heat dissipation box 48, the section of the rotary ring 50 is in an I shape, the bottom ends of the water inlet pipe 12 and the water outlet pipe 13 both extend into the mounting box 5 and are fixedly connected with two sides of the top end of the rotary ring 50, the water inlet pipe 12 and the water outlet pipe 13 are respectively communicated with the rotary ring 50, the water inlet pipe 12 and the water outlet pipe 13 are hard pipes.

The cooling fan 10 and the electric telescopic rod 27 are electrically connected with the vehicle-mounted circuit through circuits.

The insertion rod 45 is made of hard alloy materials.

The connection pipe 44 is disposed between the piston block 43 and the sealing ring 42.

And the electromagnetic valve on the exhaust pipe 40 is electrically connected with a vehicle-mounted power supply through a circuit.

The heat conduction rod 49 is made of an alloy material.

The working principle is as follows: when the device needs to be used, the device is firstly placed in a working area and then is installed, and after the installation is finished, the power supply of each drive in the device is switched on to enable the device to be in a standby state, so that the device can be normally used.

When the brake is normally performed, an operator directly steps on the indoor brake, and then the brake rod 15 is shifted through the existing transmission device, so that the positioning sleeve 19 starts to move, so that the brake ring 20 extrudes the brake disc 47 positioned on the right side (described by the position in fig. 1), thereby forming the brake, the heat generated by the brake is transferred to the water in the annular heat dissipation box 48 through the heat conduction rod 49, the water in the annular heat dissipation box 48 circulates through the water inlet pipe 12 and the water outlet pipe 13, the two sides of the water tank 7 are provided with the heat dissipation fins 8 and the heat dissipation fan 10, so as to ensure the water cooling in the water tank 7, thereby realizing the cooling function of the brake disc 47, when the cooling function reaches the limit, namely when the complete brake fails to occur, the two electric telescopic rods 27 in the two mounting grooves 26 are started at this time, so that the two electric telescopic rods 27 start to stretch, the first fixing ring 28, the heating ring 29 and the second fixing ring 31 are pushed to move so as to be extruded with the brake disc 47 on the left side, so that secondary braking is formed, the annular cavity 30 is filled with water, heat generated when the second fixing ring 31 is attached to the brake disc 47 for braking is 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 is used for extruding the brake disc 47 on the right side is transferred to the water in the annular cavity 30, so that the water in the annular cavity 30 is heated, because of the huge heat, the water is evaporated into gas, and enters the piston cylinder 41 along the connecting pipe 44, the pressure in the piston cylinder 41 is increased, the piston block 43 is pushed to move to the left, so that the pull rod 37 further pulls the brake rod 15 to the left, the sliding grooves 34 and the sliding blocks 35 are arranged on the side wall of the brake rod 15, thereby ensuring the normal operation of the device, and the second U-shaped block 36 and the second hinge pin 38 are arranged, so that the pull rod 37 can keep the leftward pulling force without the occurrence of bending torque, so that the two brake discs 47 are pressed towards the middle simultaneously, thereby being tighter and tighter, and realizing the function of emergency braking, the plurality of insertion rods 45 and the insertion holes 46 are arranged, so as to avoid the brake discs 47 from being driven to rotate when being tightly attached to the second fixing ring 31, the second fixing ring 31 can be well prevented from rotating through the arrangement of the plurality of insertion rods 45, the normal use of the device is ensured, so as to ensure the braking performance of the automobile, when the ordinary braking is performed, because the connecting pipe 44 is communicated with the annular cavity 30, and the annular cavity 30 is communicated with the water tank 7 through the connecting water pipe 11, a passage can be formed, and the pressure in the piston cylinder 41 is ensured to be stable, and only when the connecting pipe 44 is inflated into the piston cylinder 41, because of lack of a passage, the air pressure in the piston cylinder 41 is increased, thereby realizing the braking effect of the device, and an exhaust hole is arranged on one side wall of the piston cylinder 41, thereby ensuring the normal use of the piston cylinder 41.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

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.