CN116557451A - Brake disc structure and method for assembling the brake disc - Google Patents

Abstract

The invention relates to a brake disc structure, which comprises a brake caliper, a brake disc, a pressing block and a friction plate, wherein an accommodating cavity is formed in the brake caliper, a locking device is arranged on the inner surface of the accommodating cavity, the limiting device comprises a rubber air bag and a locking block, an air cavity is formed in the rubber air bag, a plurality of locking grooves matched with the locking block for use are formed in the surface of the brake disc, and a connecting table for connecting an automobile hub is arranged in the middle of the brake disc; the method comprises the following steps: s1: assembling a brake caliper; s2: assembling a limiting device; s3: assembling a connecting table; the surfaces at two ends of the brake disc are simultaneously braked and locked in a mode of arc-shaped surface contact of the friction plate and point-surface contact of the brake plate, and then the locking groove is clamped by the locking block, so that the brake disc has a secondary locking effect; the emergency locking speed of the brake disc is increased in a twice locking mode, and when the distance is short and the braking stroke is long, the continuous sliding of the automobile tire is reduced in a twice locking mode.

Description

Brake disc structure and brake disc assembly method

technical field

The invention relates to the technical field of brake discs, in particular to a brake disc structure and a brake disc assembly method.

Background technique

Brakes include disc brakes, drum brakes and air brakes. Many models adopt disc brake structure. Because the heat dissipation of disc brakes is better than that of drum brakes, it is not easy to produce thermal recession under high-speed braking conditions, so its high-speed braking effect is better. But when the brake is cold at low speed, the braking effect is not as good as that of the drum brake.

The brake disc is a circular plate that rotates when the car is moving. The brake caliper clamps the brake disc to generate braking force. When the brake is applied, it clamps the brake disc to slow down or stop the car. Disc brakes provide better braking and are easier to maintain than drum brakes.

The existing Chinese patent whose notification number can be referred to is CN217873902U discloses a steel brake disc structure for a new energy vehicle brake pad, including a main body, a heat dissipation mechanism and an auxiliary mechanism. The outer end, the auxiliary mechanism is located at the inner end of the main body, the main body includes a brake disc body, brake disc 1, brake disc 2, mounting disc 1 and mounting disc 2, and the brake disc 1 is fixedly installed on the brake disc body At the upper end, the brake disc two is fixedly installed at the lower end of the brake disc body. By installing a heat dissipation mechanism, the oil in the metal oil storage tank can be cooled, which can not only reduce the temperature, but also lubricate at the same time, reduce the friction force, and the temperature will also decrease, and it can also prevent the brake disc body from rusting and insensitive. The hollow tube And ventilation holes can speed up the circulation of air during driving, take away excess heat, and play an auxiliary role in cooling.

The existing Chinese patent whose notification number is CN103979058A can be referred to, which discloses a brake disc assembly method for disc brakes, including a retaining ring, an inner nut, an outer nut and several positioning pins. There are positioning pin holes corresponding to the mounting holes on the brake disc. When assembling, first insert the retaining ring from the assembly end of the rotary body, and then install the inner nut, and connect the retaining ring to the shaft of the rotary body. The shoulder should be fixed tightly, and the outer edge of the retaining ring should block at least a part of the positioning pin hole of the inner nut. Install the positioning pin shaft into the positioning pin hole of the inner nut, and then align the mounting hole on the brake disc with the positioning pin shaft. Push the brake disc in, and finally install the outer nut. The outer edge of the outer nut must at least cover a part of the installation hole on the brake disc. The outer nut and the inner nut form opposite locking forces to lock the brake disc. The assembly efficiency is improved, the production cost is reduced, and it has an anti-loosening effect, which improves safety, enables users to use it safely during driving, and minimizes potential safety hazards.

Although the above-mentioned patents all disclose the locking structure of the brake disc, they do not have the structure and function of secondary braking. When the brake pads are in a worn state, the force used for emergency braking and locking is too large. , may lead to uneven force on the worn parts of the brake pads and cause the breakage of the brake pads, thus causing the possibility of traffic accidents. Since the above-mentioned patents do not have a secondary braking structure, when the brake pads break, they cannot be used. Or lock the brake disc through other structures, which will increase the risk of causing traffic accidents. For this reason, the inventor proposes a brake disc structure and an assembly method of the brake disc to solve the above-mentioned two-way brake disc. A technical problem with secondary brake lockup.

Contents of the invention

In order to overcome the disadvantages of the above-mentioned situation, the invention aims to provide a technical solution that can solve the above-mentioned problems.

A brake disc structure, including a brake caliper, a brake disc, a pressure block and a friction plate, the interior of the brake caliper is a housing chamber for housing the brake disc, and the inner surface of the housing chamber is installed with a The brake disc is a locking device for braking. The locking device includes a piston, an oil pipe, a brake pad and a top block. The pistons are respectively installed on the surfaces of both ends of the accommodating chamber, and the brake pad and the top block are respectively installed on the surface of the piston. One end of the oil pipe extends to the inside of the piston, and the other end of the oil pipe is used to connect to the external hydraulic cylinder;

The inner surface of the accommodation chamber is equipped with a limit device for braking and locking the brake disc. The limit device includes rubber airbags and locking blocks. The rubber airbags are respectively installed on the surfaces at both ends of the accommodation chamber, and the locking blocks are evenly arranged. On the surface of the rubber airbag, the interior of the rubber airbag is an air cavity, the surface of the brake disc is provided with several locking grooves for matching with the locking blocks, and the middle part of the brake disc is installed with a connecting platform for connecting the wheel hub of the car.

Further, the locking grooves are circularly arranged on the outer surface of the locking grooves, the distance between two adjacent locking grooves is equidistant, and both ends of the brake disc are provided with wear-resistant layers, which are wear-resistant. The layer is made of ceramic materials. The main material of ceramic materials is mineral fiber, aramid fiber or ceramic fiber. While providing excellent braking performance, it does not wear the counterpart, and it has good heat resistance, good thermal conductivity and high hardness. The relative friction effect of the stainless steel disc is better, and it has the effect of braking and locking. There are several heat dissipation grooves on the surface of the wear-resistant layer for assisting heat dissipation. The heat dissipation grooves are arranged in a circular array on the surface of the wear-resistant layer. And run through both ends of the brake disc;

The oil pipe is connected to the external hydraulic cylinder, so that the piston operates through the force of the oil pressure, and the piston pushes the pressure block, so that the pressure block pushes the friction plate to lock the brake disc, and the piston at one end of the accommodation chamber pushes the brake plate, The brake pads are in contact with the surface of the wear-resistant layer, and the brake pads apply force to the wear-resistant layer through the force of oil pressure to lock, thereby completing the locking process of the brake disc.

Further, the friction plate is installed on one end of the pressure block, and one end of the pressure block is attached to the surface of the top block, and the surface of the pressure block is provided with a connector for matching with the brake caliper, and the middle part of the connector is a through hole Shape, the surface of the brake caliper is connected with a lock nut that is paired with the connector, and the lock nut is used to limit the position of the brake caliper and the pressure block, and the brake caliper and the pressure block have the same arc.

Further, the air chamber is located between the rubber airbag and the brake caliper, and the surface of the brake caliper is provided with a threaded connection port for connecting to an external air pump, and the threaded connection port extends to the inside of the air chamber. When the threaded connection port is connected to the external air pump When the pressure is generated by the air pump, the gas enters the interior of the air cavity, so that the rubber air bag and the locking block move towards the brake disc under the driving force generated by the expansion of the gas inside the air cavity, and the friction plate and the brake plate are pressed against each other. The brake disc is braked and locked for the first time. When the locking block moves to the position where it produces a conflicting force with the locking groove, the locking groove is clamped by the locking block, so that the brake disc performs a second brake lock. locking effect.

Further, the connection platform and the brake disc are coaxially arranged, and the middle part of the connection platform is provided with installation holes, and the installation holes run through the surfaces of both ends of the connection platform. On the surface of the connecting table, the distance between two adjacent connecting blocks is set equidistantly, and the structure of the ring array is adopted to make the stress point between the connecting blocks uniform, which has the effect of dispersing the force and avoids excessive local force. Large enough to cause deformation or breakage of the connecting block, the mounting hole is used to connect the outer car hub.

Further, one end of the connecting block is provided with a clamping block, the middle part of the clamping block is in the shape of a through hole, one end of the clamping block extends to the inside of the connecting platform, and the surface of the connecting platform is provided with several connecting holes for matching connection with the clamping block , the connection hole is used to connect the external screw, and the external screw is connected with the connection hole and the through hole in the middle of the block, so that the block can limit the position of the connection table and increase the connection stability between the connection table and the brake disc , to reduce the possibility of the connecting table falling off from the middle of the brake disc.

Further, one end of the brake caliper is equipped with a magnetic suction piece, the shape of the magnetic suction piece is consistent with the shape of the brake caliper, the magnetic suction piece is fixedly connected with one end of the brake caliper, and the magnetic suction piece is composed of a neodymium magnet. When installing the brake caliper, the magnetic suction sheet generates magnetic attraction to absorb the surface of the equipment that matches with it. When the installer releases the brake caliper, the brake caliper will be slowed down by the magnetic attraction. The speed of landing on the ground increases the reaction time of the installer by slowing down the falling speed, thereby reducing the probability of the brake caliper falling to the ground.

An assembling method of a brake disc, the assembling method is used for assembling a brake disc structure, and the method comprises the following steps:

S1: Assemble the brake caliper; install the piston and the oil pipe on the inner surface of the housing chamber respectively, and install the brake pad and the top block on the surface of the piston respectively, and then connect the joint head through the lock nut to install the dynamic pressure block on the housing Inside the cavity, one end of the friction plate is used to lock the brake disc, and the end of the pressure block away from the friction plate is attached to the surface of the top block, and the external hydraulic cylinder is connected through the oil pipe, so that the piston moves forward through the force of the oil pressure. Operation, through the piston to push the pressure block, so that the pressure block pushes the friction plate to lock the brake disc, and at the same time, the piston at one end of the accommodation chamber pushes the brake pad, so that the brake pad is in contact with the surface of the wear-resistant layer, and through the action of oil pressure The force makes the brake pad apply force to the wear layer to lock, thus completing the locking process of the brake disc;

S2: Assemble the limit device; connect the surface of the rubber airbag by bonding and locking the nut, so that the rubber airbag is fixed inside the accommodation cavity, and the locking block and the rubber airbag are detachable structures;

S3: Assembling the connection table; the brake disc, the connection block and the clamping block are formed by one-piece molding, and then the connection table is spliced with the connection block and the clamping block by means of installation. One end of the connection table can be provided with an opening slot, through the opening The slot connects the block to fix the connection table, and then installs an external connection plate on one end of the block to make the connection plate flush with the surface of one end of the connection table, and connects the external screw through the connection hole, so that the screw generates a locking force to further limit the connection tower.

Further, in S1, the highest point of the friction pad is 0.1 mm from the surface of the brake disc, and the highest point of the brake pad is 0.1 mm from the surface of the brake disc. The contact mode of the friction pad is arc surface contact, and the braking The contact mode of the sheet is point-surface contact.

Further, in S2, the distance between the highest point of the locking block and the surface of the brake disc is 5 mm.

Compared with prior art, the beneficial effect of the present invention is:

1. The surface of both ends of the brake disc is braked and locked at the same time by means of the arc surface contact of the friction plate and the point surface contact of the brake plate, and then the locking groove is clamped by the locking block, so that the brake disc can play a role. The effect of secondary locking;

2. Increase the emergency locking speed of the brake disc through two locking methods. When the distance is short and the braking stroke is long, the continuous sliding of the car tires can be reduced by two locking methods;

3. When reducing the rotation speed of the brake disc through the brake pads and friction pads, lock the locking groove through the locking block to reduce the continuous friction between the brake disc and the brake pads and friction pads, and reduce the friction between the brake pads and friction pads. The degree of surface wear and tear can avoid the phenomenon of uneven force due to local wear, which will lead to uneven force on the worn part of the brake pad and friction plate, resulting in fracture.

Description of drawings

Fig. 1 is an exploded view of a brake disc structure of the present invention;

Fig. 2 is an axial view of a brake disc structure of the present invention;

Fig. 3 is a perspective view of a brake disc structure of the present invention;

Fig. 4 is another perspective view of a brake disc structure of the present invention;

Fig. 5 is a perspective view of a brake caliper in a brake disc structure of the present invention;

Fig. 6 is an internal structure diagram of a brake caliper in a brake disc structure of the present invention;

Fig. 7 is a perspective view of a connecting platform in a brake disc structure of the present invention;

Fig. 8 is a schematic flow chart of an assembly method of a brake disc of the present invention;

In the figure: 1-brake caliper, 2-brake disc, 3-pressure block, 4-friction plate, 5-piston, 6-oil pipe, 7-brake pad, 8-top block, 9-accommodating chamber, 10 -Rubber airbag, 11-lock block, 12-air cavity, 13-threaded connection port, 14-lock groove, 15-wear layer, 16-radiation groove, 17-connector, 18-lock nut, 19 -connection table, 20-installation hole, 21-connection block, 22-card block, 23-connection hole, 24-magnetic suction sheet.

Detailed ways

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

In this embodiment, please refer to Fig. 1-Fig. 8, a kind of brake disc structure of its specific implementation, comprises brake caliper 1, brake disc 2, pressing block 3 and friction plate 4, the inside of described brake caliper 1 is The accommodation cavity 9 for accommodating the brake disc 2, the inner surface of the accommodation cavity 9 is equipped with a locking device for braking the brake disc 2, the locking device includes a piston 5, an oil pipe 6, a brake pad 7 and the top block 8, the piston 5 is respectively installed on the surface of the two ends of the accommodating cavity 9, the brake pad 7 and the top block 8 are respectively installed on the surface of the piston 5, one end of the oil pipe 6 extends to the inside of the piston 5, and the other end of the oil pipe 6 For connection to external hydraulic cylinders;

The inner surface of the accommodation chamber 9 is equipped with a limit device for braking and locking the brake disc 2. The limit device includes a rubber airbag 10 and a locking block 11. The rubber airbags 10 are respectively installed on the surfaces at both ends of the accommodation chamber 9. The locking blocks 11 are evenly arranged on the surface of the rubber airbag 10, the inside of the rubber airbag 10 is an air cavity 12, and the surface of the brake disc 2 is provided with several locking grooves 14 that are paired with the locking blocks 11. The middle part of 2 is equipped with the connection stand 19 that is used to connect automobile wheel hub.

The locking grooves 14 are circularly arranged on the outer surface of the locking grooves 14, and the distance between two adjacent locking grooves 14 is set equidistantly. Both ends of the brake disc 2 are provided with wear-resistant layers 15, Wear-resistant layer 15 is made of ceramic material, and the main material of ceramic material is mineral fiber, aramid fiber or ceramic fiber. Higher, the relative friction effect for the stainless steel disc is better, and the effect of braking and locking is played. The surface of the wear-resistant layer 15 is provided with several heat dissipation grooves 16 for assisting heat dissipation. The heat dissipation grooves 16 are arranged in a circular array on the The surface of the wear-resistant layer 15, and runs through both ends of the brake disc 2;

The oil pipe 6 is connected to the external hydraulic cylinder, so that the piston 5 operates through the force of the oil pressure, and the pressure block 3 is pushed by the piston 5, so that the pressure block 3 pushes the friction plate 4 to lock the brake disc 2, and at the same time, the accommodating chamber 9 The piston 5 at one end pushes the brake pad 7 so that the brake pad 7 is in contact with the surface of the wear-resistant layer 15, and the brake pad 7 exerts force on the wear-resistant layer 15 to lock the brake pad 7 through the force of oil pressure. Locking process of brake disc 2.

The friction plate 4 is installed on one end of the pressure block 3, and one end of the pressure block 3 is attached to the surface of the top block 8, and the surface of the pressure block 3 is provided with a connecting head 17 for pairing with the brake caliper 1. The connecting head 17 The middle part of the brake caliper is in the shape of a through hole. The surface of the brake caliper 1 is connected with a lock nut 18 that is paired with the connector 17. The lock nut 18 is used to limit the position of the brake caliper 1 and the pressure block 3. The brake caliper 1 and the The 3 arcs of the pressing block are consistent.

The air chamber 12 is located between the rubber airbag 10 and the brake caliper 1, and the surface of the brake caliper 1 is provided with a threaded connection port 13 for connecting an external air pump. The threaded connection port 13 extends to the inside of the air chamber 12. When the threaded connection When the port 13 is connected to an external air pump, the air pump (not shown) generates pressure so that the gas enters the interior of the air chamber 12, so that the rubber airbag 10 and the locking block 11 move towards the brake under the driving force generated by the expansion of the gas inside the air chamber 12. The direction of the disc 2 is moved, and the brake disc 2 is braked and locked for the first time through the friction plate 4 and the brake plate 7. When the locking block 11 moves to the position where the locking groove 14 produces a conflict , the locking groove 14 is clamped by the locking block 11, so that the brake disc 2 has the effect of secondary locking.

The connection platform 19 and the brake disc 2 are arranged coaxially, and the middle part of the connection platform 19 is provided with an installation hole 20, and the installation holes 20 run through the surfaces of both ends of the connection platform 19, and the connection platform 19 is connected to the connection platform 19 through a connection block 21 , the connecting blocks 21 are arranged in a circular array on the surface of the connecting table 19, and the distance between two adjacent connecting blocks 21 is equidistantly arranged, and the structure of the circular array is adopted to make the stress points between the connecting blocks 21 uniform and play a role of dispersion The effect of force, to avoid the deformation or fracture of the connection block 21 due to excessive local force, the mounting hole 20 is used to connect the outer hub of the car.

One end of the connecting block 21 is provided with a clamping block 22, the middle part of the clamping block 22 is a through hole shape, one end of the clamping block 22 extends to the inside of the connecting platform 19, and the surface of the connecting platform 19 is provided with a plurality of clamping blocks 22. Connecting hole 23, the connecting hole 23 is used to connect the external screw, and the external screw is connected with the connecting hole 23 and the through hole in the middle of the block 22, so that the block 22 can limit the position of the connecting platform 19 and increase the connecting platform The connection stability between 19 and the brake disc 2 reduces the possibility that the connection platform 19 falls off from the middle of the brake disc 2 .

One end of the brake caliper 1 is equipped with a magnetic suction sheet 24, the shape of the magnetic suction sheet 24 is consistent with the shape of the brake caliper 1, the magnetic suction sheet 24 is fixedly connected with one end of the brake caliper 1, and the magnetic suction sheet 24 is formed by It is composed of neodymium magnets. When the brake caliper 1 is installed, the magnetic attraction force is generated by the magnetic attraction piece 24 to absorb the surface of the equipment matched with it. When the installer releases the brake caliper 1, it is absorbed by the magnetic attraction force The speed at which the brake caliper 1 falls to the ground is slowed down by slowing down the falling speed, and the reaction time of the installation personnel is increased by slowing down the falling speed, thereby reducing the probability of the brake caliper 1 falling to the ground.

An assembling method of a brake disc, the assembling method is used for assembling a brake disc structure, and the method comprises the following steps:

S1: Assemble the brake caliper; install the piston 5 and the oil pipe 6 on the inner surface of the housing chamber 9 respectively, and install the brake pad 7 and the top block 8 on the surface of the piston 5 respectively, and then connect the connector through the lock nut 18 17 Install the dynamic pressure block 3 inside the housing chamber 9, one end of the friction plate 4 is used to lock the brake disc 2, and the end of the pressure block 3 far away from the friction plate 4 is attached to the surface of the top block 8, through the oil pipe 6. Connect the external hydraulic cylinder so that the piston 5 operates through the force of the oil pressure, and the pressure block 3 is pushed by the piston 5, so that the pressure block 3 pushes the friction plate 4 to lock the brake disc 2;

At the same time, the piston 5 at one end of the accommodation chamber 9 pushes the brake pad 7, so that the brake pad 7 contacts the surface of the wear-resistant layer 15, and the brake pad 7 exerts an active force on the wear-resistant layer 15 through the force of the oil pressure to lock , so as to complete the locking process of the brake disc 2, the highest point of the friction disc 4 is 0.1mm from the surface of the brake disc 2, the highest point of the brake disc 7 is 0.1mm from the surface of the brake disc 2, and the distance between the highest point of the friction disc 4 and the surface of the brake disc 2 The contact mode is arc-shaped surface contact, and the contact mode of the brake pad 7 is point-surface contact;

S2: Assemble the limit device; the rubber airbag 10 is fixed in the interior of the accommodation cavity 9 by bonding and locking the nut 18 to connect the surface of the rubber airbag 10, and the locking block 11 and the rubber airbag 10 are detachable structures. The distance between the highest point of the stop block 11 and the surface of the brake disc 2 is 5mm;

S3: Assembling the connection table; the brake disc 2, the connection block 21 and the clamping block 22 are formed by integral molding, and then the connection table 19 is spliced with the connection block 21 and the clamping block 22 by means of installation, and one end of the connection table 19 An open slot can be provided, and the connecting block 22 can be connected through the open slot so that the connecting platform 19 can be fixed, and then an external connecting plate can be installed on one end of the locking block 22 to make the connecting plate flush with the surface of one end of the connecting platform 19, and the connecting plate can be connected through the connecting hole 23. An external screw, so that the screw generates a locking force to further define the connection platform 19 .

The key points of the design of the present invention are: adopting the method of contacting the arc surface of the friction plate 4 and the surface contact of the brake plate 7 points to brake and lock the surfaces of the brake disc 2 at the same time, and then lock and lock it through the locking block 11 Groove 14, so that the brake disc 2 has the effect of secondary locking;

Increase the emergency locking speed of the brake disc 2 by double locking, and reduce the continuous sliding of the car tires by double locking when the distance is short and the braking stroke is long;

When the speed of rotation of the brake disc 2 is reduced by the brake disc 7 and the friction disc 4, the locking groove 14 is clamped by the locking block 11 to reduce the continuous friction between the brake disc 2 and the brake disc 7 and the friction disc 4, thereby reducing The degree of wear on the surface of the brake pad 7 and the friction pad 4 avoids the phenomenon of uneven stress due to local wear, which leads to uneven force on the worn parts of the brake pad 7 and friction pad 4, resulting in fracture.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field of the present invention, without departing from the concept of the present invention, some simple deduction or replacement can also be made, which should be regarded as the protection scope of the present invention.

Claims (10)

1. A brake disc structure, comprising a brake caliper, a brake disc, a briquetting block and a friction plate, characterized in that: the inside of the brake caliper is an accommodating cavity for accommodating the brake disc, the cavity of the accommodating cavity The inner surface is equipped with a locking device for braking the brake disc. The locking device includes a piston, an oil pipe, a brake pad and a top block. Installed on the surface of the piston, one end of the oil pipe extends to the inside of the piston, and the other end of the oil pipe is used to connect to the external hydraulic cylinder; The inner surface of the accommodation chamber is equipped with a limit device for braking and locking the brake disc. The limit device includes rubber airbags and locking blocks. The rubber airbags are respectively installed on the surfaces at both ends of the accommodation chamber, and the locking blocks are evenly arranged. On the surface of the rubber airbag, the interior of the rubber airbag is an air cavity, the surface of the brake disc is provided with several locking grooves for matching with the locking blocks, and the middle part of the brake disc is installed with a connecting platform for connecting the wheel hub of the car. 2. A brake disc structure according to claim 1, characterized in that: the locking grooves are arranged circularly on the outer surface of the locking grooves, and the distance between two adjacent locking grooves is equidistant. , Both ends of the brake disc are equipped with wear-resistant layers, the wear-resistant layer is made of ceramic materials, and the surface of the wear-resistant layer is provided with a number of heat dissipation grooves for assisting heat dissipation, and the circular array of heat dissipation grooves is arranged on the wear-resistant layer surface, and runs through both ends of the brake disc. 3. A brake disc structure according to any one of claims 1-2, characterized in that: the friction plate is installed at one end of the pressure block, and one end of the pressure block is attached to the surface of the top block, and the surface of the pressure block The surface is provided with a connector for matching with the brake caliper. The middle part of the connector is in the shape of a through hole. The surface of the brake caliper is connected with a lock nut that is matched with the connector. The lock nut is used to limit the brake caliper and The position of the pressing block, the brake caliper is consistent with the arc of the pressing block. 4. A brake disc structure according to any one of claims 1-2, characterized in that: the air cavity is located between the rubber airbag and the brake caliper, and the surface of the brake caliper is provided with a hole for connecting an external air pump. The threaded connection port extends to the inside of the air cavity. 5. A brake disc structure according to any one of claims 1-2, characterized in that: the connecting platform and the brake disc are arranged coaxially, and a mounting hole is opened in the middle of the connecting platform, and the mounting hole penetrates through the connection On the surfaces at both ends of the platform, the connecting platform is connected to the connecting platform through connecting blocks, the connecting blocks are arranged in a circular array on the surface of the connecting platform, and the distance between two adjacent connecting blocks is equidistant. 6. A brake disc structure according to claim 5, characterized in that: one end of the connecting block is provided with a clamping block, the middle of the clamping block is in the shape of a through hole, and one end of the clamping block extends to the inside of the connecting platform, The surface of the connection platform is provided with several connection holes which are paired and connected with the clamping blocks. 7. A brake disc structure according to any one of claims 1-2, characterized in that: one end of the brake caliper is equipped with a magnetic attraction piece, the shape of the magnetic attraction piece is consistent with the shape of the brake caliper, One end of the magnetic suction piece and the brake caliper is fixedly connected. 8. A brake disc assembly method, characterized in that: the assembly method is used to assemble a brake disc structure described in any one of claims 1-7, the method comprising the following steps: S1: Assemble the brake caliper; install the piston and the oil pipe on the inner surface of the housing chamber respectively, and install the brake pad and the top block on the surface of the piston respectively, and then connect the joint head through the lock nut to install the dynamic pressure block on the housing Inside the cavity, one end of the friction plate is used to lock the brake disc, and the end of the pressure block away from the friction plate is attached to the surface of the top block, and the external hydraulic cylinder is connected through the oil pipe, so that the piston moves forward through the force of the oil pressure. operation; S2: Assemble the limit device; connect the surface of the rubber airbag by bonding and locking the nut, so that the rubber airbag is fixed inside the accommodation cavity, and the locking block and the rubber airbag are detachable structures; S3: Assembling the connection table; the brake disc, the connection block and the clamping block are formed by one-piece molding, and then the connection table is spliced with the connection block and the clamping block by means of installation. One end of the connection table can be provided with an opening slot, through the opening The slot connects the block to fix the connection table, and then installs an external connection plate on one end of the block to make the connection plate flush with the surface of one end of the connection table, and connects the external screw through the connection hole, so that the screw generates a locking force to further limit the connection tower. 9. A brake disc assembly method according to claim 8, characterized in that: in said S1, the highest point of the friction pad is 0.1 mm from the surface of the brake disc, and the highest point of the brake pad is 0.1 mm from the surface of the brake disc. 0.1mm on the surface, the contact mode of the friction plate is arc-shaped surface contact, and the contact mode of the brake pad is point-surface contact. 10 . The method for assembling a brake disc according to claim 8 , wherein in said S2 , the distance between the highest point of the locking block and the surface of the brake disc is 5 mm. 11 .