Brake disc structure and brake disc assembly method

Abstract

The present invention relates to a brake disc structure, comprising a brake caliper, a brake disc, a pressure block and a friction pad, wherein the interior of the brake caliper is an accommodating cavity, the inner surface of the accommodating cavity is equipped with a locking device, the limiting device comprises a rubber airbag and a locking block, the interior of the rubber airbag is an air cavity, the surface of the brake disc is provided with a plurality of locking grooves used in pair with the locking block, and the middle part of the brake disc is equipped with a connecting platform for connecting to the automobile wheel hub; the method comprises the following steps: S1: assembling the brake caliper; S2: assembling the limiting device; S3: assembling the connecting platform; the surfaces of both ends of the brake disc are brake-locked simultaneously by adopting the arc surface contact of the friction pad and the point surface contact of the brake pad, 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 by the double locking method, and when the distance is short and the braking stroke is long, the continuous sliding of the automobile tire is reduced by the double locking method.

Description

Technical Field

[0001] The present invention relates to the technical field of brake discs, and in particular to a brake disc structure and a brake disc assembly method. Background Art

[0002] Brakes come in three types: disc brakes, drum brakes, and air brakes. Disc brakes are used in many models. Because disc brakes dissipate heat better than drum brakes and are less susceptible to thermal decay during high-speed braking, they offer superior high-speed braking performance. However, at low speeds and cold braking, their braking performance is inferior to that of drum brakes.

[0003] The brake disc is a round plate that rotates as the car moves. The brake caliper clamps the disc, generating braking force. When you apply the brakes, it's the disc that slows or stops the car. Disc brakes offer superior braking performance and are easier to maintain than drum brakes.

[0004] An existing Chinese patent with reference publication number CN217873902U discloses a steel brake disc structure for new energy vehicle brake pads, comprising a main body, a heat dissipation mechanism, and an auxiliary mechanism. The heat dissipation mechanism is located at the outer end of the main body, and the auxiliary mechanism is located at the inner end of the main body. The main body comprises a brake disc body, brake disc 1, brake disc 2, mounting disc 1, and mounting disc 2. Brake disc 1 is fixedly mounted at the upper end of the brake disc body, and brake disc 2 is fixedly mounted at the lower end of the brake disc body. By installing the heat dissipation mechanism, the oil in the metal oil storage tank is cooled, which not only reduces the temperature but also lubricates it, reducing friction, lowering the temperature, and preventing the brake disc body from rusting and becoming insensitive. The hollow tube and ventilation holes can accelerate air circulation during driving, remove excess heat, and play an auxiliary cooling role.

[0005] The existing Chinese patent with reference publication number CN103979058A discloses a method for assembling a disc brake disc, comprising a retaining ring, an inner nut, an outer nut, and a plurality of locating pins. The inner nut body is provided with locating pin holes that correspond one-to-one with the mounting holes on the brake disc. During assembly, the retaining ring is first inserted through the assembly end of the rotating body, and then the inner nut is installed. The retaining ring is tightly fixed to the shaft shoulder of the rotating body. The outer edge of the retaining ring at least partially covers the locating pin holes of the inner nut. The locating pins are installed into the locating pin holes of the inner nut. The mounting holes on the brake disc are then aligned with the locating pins, and the brake disc is pushed in. Finally, the outer nut is installed. The outer edge of the outer nut at least partially covers the mounting holes on the brake disc. The outer nut and the inner nut form opposing locking forces to lock the brake disc. This method improves assembly efficiency, reduces production costs, and has a loosening prevention function, which improves safety, allowing users to use the vehicle with confidence and minimize safety hazards.

[0006] Although the above patents all disclose a locking structure for the brake disc, none of them has a secondary braking structure or function. When the brake pad is in a worn state, the force used for emergency braking locking is too large, which may cause uneven force on the worn part of the brake pad and cause the brake pad to break, thereby causing the possibility of traffic accidents. Since the above patents all do not have a secondary braking structure, when the brake pad breaks, it is impossible to use or use other structures to lock the brake disc, resulting in an increased risk of causing traffic accidents. For this reason, the inventors have proposed a brake disc structure and a brake disc assembly method to solve the above-mentioned technical problem of proposing secondary braking locking of the brake disc. Summary of the Invention

[0007] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0008] A brake disc structure, comprising a brake caliper, a brake disc, a pressure block, and a friction pad. The interior of the brake caliper is a receiving chamber for receiving the brake disc. The inner surface of the receiving chamber is equipped with a locking device for braking the brake disc. The locking device comprises a piston, an oil pipe, a brake pad, and a top block. The piston is respectively mounted on the surfaces at both ends of the receiving chamber. The brake pad and the top block are respectively mounted on the surface of the piston. One end of the oil pipe extends into the interior of the piston, and the other end of the oil pipe is used to connect to an external hydraulic cylinder.

[0009] A limiting device for locking the brake disc is installed on the inner surface of the accommodating cavity. The limiting device includes a rubber airbag and a locking block. The rubber airbags are respectively installed on the surfaces of both ends of the accommodating cavity. 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 used in pair with the locking blocks. A connecting platform for connecting to the automobile wheel hub is installed in the middle of the brake disc.

[0010] Furthermore, the locking grooves are arranged in a ring shape on the outer side of the locking groove, and the distance between two adjacent locking grooves is set equidistantly. Both ends of the brake disc are provided with a wear-resistant layer, and the wear-resistant layer is composed of a ceramic material. The main material of the ceramic material is mineral fiber, aramid fiber or ceramic fiber. While providing excellent braking performance, it does not wear the mating parts, and has good heat resistance, good thermal conductivity, and high hardness. It has a good relative friction effect on the stainless steel disc, which plays a role in brake locking. The surface of the wear-resistant layer is provided with a plurality of heat dissipation grooves for assisting heat dissipation. The heat dissipation grooves are arranged in a circular array on the surface of the wear-resistant layer and pass through both ends of the brake disc.

[0011] The external hydraulic cylinder is connected through an oil pipe, so that the piston operates under the action of oil pressure. The piston pushes the pressure block, which pushes the friction plate to lock the brake disc. At the same time, the piston at one end of the accommodating chamber pushes the brake pad, so that the brake pad contacts the surface of the wear-resistant layer. The brake pad applies force to the wear-resistant layer through the action of oil pressure to lock it, thereby completing the locking process of the brake disc.

[0012] Furthermore, the friction plate is installed on one end of the pressure block, and one end of the pressure block is in contact with the surface of the top block. The surface of the pressure block is provided with a connector for matching with the brake caliper. The middle part of the connector is a through hole. The surface of the brake caliper is connected with a locking nut matched with the connector. The locking nut is used to limit the position of the brake caliper and the pressure block. The curvature of the brake caliper and the pressure block is consistent.

[0013] Furthermore, the air cavity is located between the rubber airbag and the brake caliper, and a threaded connection port for connecting an external air pump is provided on the surface of the brake caliper, and the threaded connection port extends to the interior of the air cavity. When the threaded connection port is connected to the external air pump, the pressure generated by the air pump causes the gas to enter the interior of the air cavity, thereby causing the rubber airbag and the locking block to move toward the brake disc under the driving force generated by the expansion of the gas inside the air cavity, and the brake disc is brake-locked for the first time by the friction pad and the brake pad. When the locking block moves to a position where it produces a mutual interference force with the locking groove, the locking groove is clamped by the locking block, thereby causing the brake disc to have a secondary locking effect.

[0014] Furthermore, the connecting platform and the brake disc are coaxially arranged, and a mounting hole is opened in the middle of the connecting platform, and the mounting hole passes through the surfaces of both ends of the connecting platform. The connecting platform is connected to the connecting platform through a connecting block, and the connecting blocks are arranged in a circular array on the surface of the connecting platform. The distance between two adjacent connecting blocks is equidistant. The circular array structure makes the force points between the connecting blocks uniform, which has the effect of dispersing the force and avoiding the deformation or breakage of the connecting blocks due to excessive local force. The mounting hole is used to connect to the external automobile wheel hub.

[0015] Furthermore, a clamping block is provided at one end of the connecting 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 interior of the connecting platform, and a plurality of connecting holes that are matched with the clamping block are provided on the surface of the connecting platform. The connecting holes are used to connect external screws, which are connected to the connecting holes and the through hole in the middle of the clamping block through the external screws. While the clamping block limits the position of the connecting platform, it increases the connection stability between the connecting platform and the brake disc and reduces the possibility of the connecting platform falling off from the middle of the brake disc.

[0016] Furthermore, a magnetic sheet is installed at one end of the brake caliper. The shape of the magnetic sheet is consistent with that of the brake caliper. The magnetic sheet is fixedly connected to one end of the brake caliper. The magnetic sheet is composed of a neodymium magnet. When the brake caliper is installed, the magnetic sheet generates a magnetic force to adsorb the surface of the external device that matches it. When the installer releases the brake caliper, the speed at which the brake caliper falls to the ground is slowed down by the magnetic force. By slowing down the falling speed, the installer's reaction time is increased, thereby reducing the probability of the brake caliper falling to the ground.

[0017] A brake disc assembly method is provided, wherein the assembly method is used to assemble a brake disc structure, and the method comprises the following steps:

[0018] S1: Assemble the brake caliper; install the piston and oil pipe on the inner surface of the accommodating chamber respectively, and install the brake pad and top block on the surface of the piston respectively, and then connect the connector through the lock nut to install the dynamic pressure block inside the accommodating chamber. One end of the friction pad is used to lock the brake disc, and the end of the pressure block away from the friction pad is in contact with the surface of the top block. The external hydraulic cylinder is connected through the oil pipe, so that the piston operates under the action of oil pressure. The pressure block is pushed by the piston, so that the pressure block pushes the friction pad to lock the brake disc. At the same time, the piston at one end of the accommodating chamber pushes the brake pad, so that the brake pad contacts the surface of the wear-resistant layer. The brake pad applies a force to the wear-resistant layer through the action of oil pressure to lock it, thereby completing the locking process of the brake disc;

[0019] S2: Assemble the limiting device; fix the rubber airbag inside the accommodating cavity by bonding and locking the surface of the rubber airbag with a nut, and the locking block and the rubber airbag are detachable structures;

[0020] S3: Assemble the connecting platform; the brake disc, connecting block and clamping block are formed in an integrated manner, and then the connecting platform, the connecting block and the clamping block are spliced ​​together by installation. An open slot can be opened at one end of the connecting platform, and the clamping block is connected through the open slot to fix the connecting platform. Then, an external connecting plate is installed at one end of the clamping block so that the connecting plate is flush with the surface of one end of the connecting platform, and an external screw is connected through the connecting hole so that the screw generates a locking force to further limit the connecting platform.

[0021] Furthermore, 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 contact mode of the brake pad is point surface contact.

[0022] Furthermore, in S2, the distance between the highest point of the locking block and the surface of the brake disc is 5 mm.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The surfaces of both ends of the brake disc are braked and locked simultaneously by means of arc-shaped contact of the friction plate and point-surface contact of the brake pad. The locking groove is then clamped by the locking block, thereby achieving a secondary locking effect on the brake disc.

[0025] 2. The emergency locking speed of the brake disc is increased by locking twice. When the distance is short and the braking travel is long, the continuous sliding of the car tire is reduced by locking twice;

[0026] 3. When the brake pads and friction pads are used to reduce the rotation speed of the brake disc, the locking block is used to clamp the locking groove, thereby reducing the continuous friction between the brake disc and the brake pads and friction pads, reducing the surface loss of the brake pads and friction pads, and avoiding the phenomenon of uneven force caused by local wear, which may lead to uneven force on the worn parts of the brake pads and friction pads and cause breakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is an exploded view of a brake disc structure of the present invention;

[0028] Figure 2 It is an axial view of a brake disc structure of the present invention;

[0029] Figure 3 It is a three-dimensional diagram of a brake disc structure of the present invention;

[0030] Figure 4 is another perspective view of a brake disc structure of the present invention;

[0031] Figure 5 It is a three-dimensional diagram of a brake caliper in a brake disc structure of the present invention;

[0032] Figure 6 This is a diagram of the internal structure of a brake caliper in a brake disc structure of the present invention;

[0033] Figure 7 It is a three-dimensional diagram of a connecting platform in a brake disc structure of the present invention;

[0034] Figure 8 It is a schematic flow chart of a method for assembling a brake disc according to the present invention;

[0035] 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-accommodation chamber, 10-rubber airbag, 11-locking block, 12-air cavity, 13-threaded connection port, 14-locking groove, 15-wear-resistant layer, 16-heat dissipation groove, 17-connector, 18-locking nut, 19-connecting platform, 20-mounting hole, 21-connecting block, 22-clamping block, 23-connecting hole, 24-magnetic sheet. DETAILED DESCRIPTION

[0036] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0037] For this example, please refer to Figures 1-8 , a brake disc structure specifically implemented therein includes a brake caliper 1, a brake disc 2, a pressure block 3 and a friction pad 4. The interior of the brake caliper 1 is an accommodating chamber 9 for accommodating the brake disc 2. The inner surface of the accommodating chamber 9 is installed 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 a top block 8. The piston 5 is respectively installed on the surfaces of both ends of the accommodating chamber 9, and 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 interior of the piston 5, and the other end of the oil pipe 6 is used to connect to an external hydraulic cylinder;

[0038] The inner surface of the accommodating chamber 9 is installed with a limiting device for braking and locking the brake disc 2. The limiting device includes a rubber airbag 10 and a locking block 11. The rubber airbags 10 are respectively installed on the surfaces of both ends of the accommodating chamber 9. The locking blocks 11 are evenly arranged on the surface of the rubber airbag 10. The interior of the rubber airbag 10 is an air cavity 12. The surface of the brake disc 2 is provided with several locking grooves 14 used in pair with the locking blocks 11. A connecting platform 19 for connecting to the automobile wheel hub is installed in the middle of the brake disc 2.

[0039] The locking grooves 14 are arranged in a ring shape on the outer side 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 a wear-resistant layer 15, and the wear-resistant layer 15 is made of ceramic material. The main material of the ceramic material is mineral fiber, aramid fiber or ceramic fiber. While providing excellent braking performance, it does not wear the counterpart. It has good heat resistance, good thermal conductivity, and high hardness. It has a good relative friction effect on the stainless steel disc and plays a brake locking effect. The surface of the wear-resistant layer 15 is provided with a plurality of heat dissipation grooves 16 for assisting heat dissipation. The heat dissipation grooves 16 are arranged in a circular array on the surface of the wear-resistant layer 15 and pass through both ends of the brake disc 2.

[0040] The external hydraulic cylinder is connected through the oil pipe 6, so that the piston 5 operates under the action of oil pressure, and the piston 5 pushes the pressure block 3, 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 accommodating chamber 9 pushes the brake pad 7, so that the brake pad 7 contacts the surface of the wear-resistant layer 15. The brake pad 7 applies a force to the wear-resistant layer 15 through the action of oil pressure to lock it, thereby completing the locking process of the brake disc 2.

[0041] The friction plate 4 is installed on one end of the pressure block 3, and one end of the pressure block 3 is in contact with the surface of the top block 8. The surface of the pressure block 3 is provided with a connecting head 17 for matching with the brake caliper 1. The middle part of the connecting head 17 is a through hole. The surface of the brake caliper 1 is connected with a locking nut 18 that is matched with the connecting head 17. The locking nut 18 is used to limit the position of the brake caliper 1 and the pressure block 3. The curvature of the brake caliper 1 and the pressure block 3 is consistent.

[0042] The air cavity 12 is located between the rubber airbag 10 and the brake caliper 1. A threaded connection port 13 for connecting an external air pump is provided on the surface of the brake caliper 1. The threaded connection port 13 extends to the interior of the air cavity 12. When the threaded connection port 13 is connected to the external air pump, the air pump (not shown) generates pressure to allow gas to enter the interior of the air cavity 12. As a result, the rubber airbag 10 and the locking block 11 are moved toward the brake disc 2 under the driving force generated by the expansion of the gas inside the air cavity 12. The brake disc 2 is braked for the first time by the friction pad 4 and the brake pad 7. When the locking block 11 moves to a position where it produces a mutual interference force with the locking groove 14, the locking groove 14 is clamped by the locking block 11, thereby achieving a secondary locking effect on the brake disc 2.

[0043] The connecting platform 19 and the brake disc 2 are coaxially arranged. A mounting hole 20 is opened in the middle of the connecting platform 19. The mounting hole 20 passes through the surfaces of both ends of the connecting platform 19. The connecting platform 19 is connected to the connecting platform 19 through a connecting block 21. The connecting blocks 21 are arranged in a circular array on the surface of the connecting platform 19. The distance between two adjacent connecting blocks 21 is equidistant. The circular array structure makes the force points between the connecting blocks 21 uniform, which has the effect of dispersing the force and avoiding the deformation or breakage of the connecting blocks 21 due to excessive local force. The mounting hole 20 is used to connect to the external automobile wheel hub.

[0044] One end of the connecting block 21 is provided with a clamping block 22, the middle part of the clamping block 22 is in the shape of a through hole, 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 connecting holes 23 that are matched with the clamping block 22. The connecting holes 23 are used to connect external screws, which are connected to the through hole in the middle of the clamping block 22 through the external screws. When the clamping block 22 limits the position of the connecting platform 19, it increases the connection stability between the connecting platform 19 and the brake disc 2 and reduces the possibility of the connecting platform 19 falling off from the middle part of the brake disc 2.

[0045] A magnetic sheet 24 is installed at one end of the brake caliper 1. The shape of the magnetic sheet 24 is consistent with that of the brake caliper 1. The magnetic sheet 24 is fixedly connected to one end of the brake caliper 1. The magnetic sheet 24 is composed of a neodymium magnet. When the brake caliper 1 is installed, the magnetic sheet 24 generates a magnetic force to adsorb the surface of the external equipment that matches it. When the installer releases the brake caliper 1, the speed at which the brake caliper 1 falls to the ground is slowed down by the magnetic force. By slowing down the falling speed, the installer's reaction time is increased, thereby reducing the probability of the brake caliper 1 falling to the ground.

[0046] A brake disc assembly method is provided, wherein the assembly method is used to assemble a brake disc structure, and the method comprises the following steps:

[0047] S1: Assemble the brake caliper; install the piston 5 and the oil pipe 6 on the inner surface of the accommodating chamber 9 respectively, and install the brake pad 7 and the top block 8 on the surface of the piston 5 respectively. Then, connect the connector 17 with the lock nut 18 to install the dynamic pressure block 3 inside the accommodating chamber 9. One end of the friction plate 4 is used to lock the brake disc 2. The end of the pressure block 3 away from the friction plate 4 is in contact with the surface of the top block 8. Connect the external hydraulic cylinder through the oil pipe 6, so that the piston 5 is operated by the force of the oil pressure. The piston 5 pushes the pressure block 3, so that the pressure block 3 pushes the friction plate 4 to lock the brake disc 2;

[0048] At the same time, the piston 5 at one end of the accommodating chamber 9 pushes the brake pad 7, so that the brake pad 7 contacts the surface of the wear-resistant layer 15. The brake pad 7 applies a force to the wear-resistant layer 15 through the action of the oil pressure to lock it, thereby completing the locking process of the brake disc 2. The highest point of the friction pad 4 is 0.1mm from the surface of the brake disc 2, and the highest point of the brake pad 7 is 0.1mm from the surface of the brake disc 2. The contact mode of the friction pad 4 is arc surface contact, and the contact mode of the brake pad 7 is point surface contact.

[0049] S2: Assemble the limiting device; fix the rubber airbag 10 to the inside of the accommodating cavity 9 by bonding and tightening the lock nut 18 to the surface of the rubber airbag 10. The locking block 11 and the rubber airbag 10 are detachable. The distance between the highest point of the locking block 11 and the surface of the brake disc 2 is 5 mm.

[0050] S3: Assemble the connecting platform; the brake disc 2, the connecting block 21 and the clamping block 22 are formed in an integrated manner, and then the connecting platform 19 is spliced ​​with the connecting block 21 and the clamping block 22 by installation. An open groove can be opened at one end of the connecting platform 19, and the clamping block 22 is connected through the open groove to fix the connecting platform 19. Then, an external connecting plate is installed at one end of the clamping block 22 so that the connecting plate is flush with the surface of one end of the connecting platform 19, and an external screw is connected through the connecting hole 23 so that the screw generates a locking force to further limit the connecting platform 19.

[0051] The key points of the present invention are: the surfaces of both ends of the brake disc 2 are braked and locked simultaneously by the arcuate surface contact of the friction plate 4 and the point surface contact of the brake plate 7, and then the locking block 11 is clamped in the locking groove 14, so that the brake disc 2 has a secondary locking effect;

[0052] The emergency locking speed of the brake disc 2 is increased by locking twice. When the distance is short and the braking stroke is long, the continuous sliding of the vehicle tire is reduced by locking twice.

[0053] When the rotation speed of the brake disc 2 is reduced by the brake pad 7 and the friction pad 4, the locking groove 14 is clamped by the locking block 11, thereby reducing the continuous friction between the brake disc 2 and the brake pad 7 and the friction pad 4, reducing the surface loss of the brake pad 7 and the friction pad 4, and avoiding the phenomenon of uneven force caused by local wear, which may lead to uneven force on the worn parts of the brake pad 7 and the friction pad 4 and cause breakage.

[0054] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention should not be considered to be limited to these descriptions. For those skilled in the art of the present invention, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all of these should be considered as the scope of protection of the present invention.

Claims

1. A brake disc structure, comprising a brake caliper, a brake disc, a pressure block and a friction plate, characterized in that: The interior of the brake caliper is a housing chamber for accommodating the brake disc. The inner surface of the housing chamber 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. The piston is respectively mounted on the surfaces at both ends of the housing chamber, the brake pad and the top block are respectively mounted on the surface of the piston, one end of the oil pipe extends to the interior of the piston, and the other end of the oil pipe is used to connect to an external hydraulic cylinder. The inner surface of the accommodating cavity is provided with a limiting device for locking the brake disc. The limiting device includes a rubber airbag and a locking block. The rubber airbags are respectively installed on the surfaces of both ends of the accommodating cavity. 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 a number of locking grooves used in pair with the locking blocks. A connecting platform for connecting to the automobile wheel hub is installed in the middle of the brake disc. The locking grooves are arranged in an annular manner on the outer side of the brake disc, and the distance between two adjacent locking grooves is equidistant. Both ends of the brake disc are provided with a wear-resistant layer, which is made of ceramic material. The surface of the wear-resistant layer is provided with a number of stripes. Heat dissipation grooves are used to assist in heat dissipation. The heat dissipation grooves are arranged in a circular array on the surface of the wear-resistant layer and pass through both ends of the brake disc. The friction plate is installed on one end of the pressure block, and one end of the pressure block is in contact with the surface of the top block. The surface of the pressure block is provided with a connector for matching with the brake caliper. The middle part of the connector is a through hole. The surface of the brake caliper is connected to a locking nut that matches the connector. The locking nut is used to limit the position of the brake caliper and the pressure block. The brake caliper and the pressure block have the same curvature. The air cavity is located between the rubber airbag and the brake caliper. The surface of the brake caliper is provided with a threaded connection port for connecting an external air pump, and the threaded connection port extends to the interior of the air cavity.

2. A brake disc structure according to claim 1, characterized in that: The connecting platform and the brake disc are coaxially arranged, and a mounting hole is opened in the middle of the connecting platform. The mounting hole passes through the surface of both ends of the connecting platform. The connecting platform is connected to the brake disc through a connecting block. The connecting blocks are arranged in a ring array on the surface of the connecting platform, and the distance between two adjacent connecting blocks is equidistant.

3. The brake disc structure according to claim 2, characterized in that: One end of the connecting block is provided with a card block, the middle part of the card block is a through hole, one end of the card block extends to the inside of the connecting platform, and the surface of the connecting platform is provided with a plurality of connecting holes that are matched with the card block.

4. The brake disc structure according to claim 1, characterized in that: A magnetic sheet is installed at one end of the brake caliper. The shape of the magnetic sheet is consistent with that of the brake caliper, and the magnetic sheet is fixedly connected to one end of the brake caliper.

5. A method for assembling a brake disc, characterized in that: The assembly method is used to assemble a brake disc structure according to any one of claims 1 to 4. The following steps are involved: S1: Assemble the brake caliper; install the piston and oil pipe on the inner surface of the accommodating chamber, and install the brake pad and top block on the surface of the piston. Then, connect the connector with a lock nut to install the pressure block inside the accommodating chamber. 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 in contact with the surface of the top block. Connect the external hydraulic cylinder through the oil pipe, so that the piston operates under the action of oil pressure. S2: Assemble the limiting device; fix the rubber airbag inside the accommodating cavity by bonding and locking the surface of the rubber airbag with a nut, and the locking block and the rubber airbag are detachable structures; S3: Assemble the connecting platform; the brake disc, connecting block and clamping block are formed in an integrated manner, and then the connecting platform, connecting block and clamping block are spliced ​​together by installation. An open slot can be opened at one end of the connecting platform, and the clamping block is connected through the open slot to fix the connecting platform. Then, an external connecting plate is installed at one end of the clamping block so that the connecting plate is flush with the surface of one end of the connecting platform, and an external screw is connected through the connecting hole so that the screw generates a locking force to further limit the connecting platform.

6. The brake disc assembly method according to claim 5, characterized in that: In S1, the distance between the highest point of the friction pad and the brake disc surface is 0.1 mm, the distance between the highest point of the brake pad and the brake disc surface is 0.1 mm, the contact mode of the friction pad is arc surface contact, and the contact mode of the brake pad is point surface contact.

7. The brake disc assembly method according to claim 6, characterized in that: In the above-mentioned S2, the distance between the highest point of the locking block and the surface of the brake disc is 5 mm.

Images