Abrasion self-compensating fixed caliper disc brake

Abstract

The invention discloses an abrasion self-compensating fixed caliper disc brake, which relates to the technical field of brakes and comprises a caliper body, a compensation adjusting mechanism, a cleaning protection mechanism and a detection protection mechanism, one side of the caliper body is fixedly connected with an oil inlet pipe, and the compensation adjusting mechanism comprises a brake piston. The compensation adjusting mechanism is used for adjusting the distance between the brake piston and the brake disc, the cleaning protection mechanism is used for cleaning impurity particles attached to the brake piston and the brake disc, and through the arrangement of the compensation adjusting mechanism and the detection protection mechanism, when the brake piston is abraded and becomes thin due to abrasion, the brake piston is prevented from being damaged. The compensation screw drives the sliding sleeve, the mounting sleeve and the brake piston to move by a proper distance towards the direction of the brake disc, so that the compensation of the abrasion thickness is completed, the self-compensation work of the abrasion of the brake piston can be automatically completed, the safety during braking is improved, and the precision and effect during the braking of the caliper body are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of brakes, in particular to a wear self-compensating fixed-caliper disc brake. Background Art

[0002] Disc brakes are an automotive braking system that uses the principle of friction braking. They have been widely used in cars and are gradually being adopted in new and high-end commercial vehicle models. Disc brakes are mainly composed of brake discs, friction pads (brake shoes), brake calipers, oil pipes, slave cylinders and other components. Among them, the brake disc is a rotating element that works on the end face, and the friction pads clamp the brake disc from both sides to produce a braking effect.

[0003] During the braking process of existing brakes, friction is generated between the brake pads and the brake disc, thereby achieving deceleration or stopping. Due to this continuous friction, the surface material of the brake pads will gradually be worn and consumed, causing their thickness to gradually become thinner. As a result, the distance between the thinned brake pads and the brake disc increases, affecting the braking accuracy and braking effect.

[0004] In addition, when the brake pads are in use, the brake system may be affected by the external environment, such as the intrusion of particles such as sand, dust, and pebbles. These particles will adhere to the brake pads. The presence of foreign particles may destroy the close fit between the brake pads and the brake disc, resulting in a decrease in braking performance.

[0005] Therefore, the present invention proposes a wear self-compensating fixed caliper disc brake to solve the above problems. Summary of the invention

[0006] In view of this, the technical problem to be solved by the present invention is to propose a wear self-compensating fixed caliper disc brake to solve the problem in the prior art that the distance between the thinned brake pad and the brake disc increases, affecting the braking accuracy and braking effect, and the presence of foreign particles will destroy the close fit between the brake pad and the brake disc, resulting in a decrease in braking performance.

[0007] To achieve the above objectives, the present invention provides the following technical solutions: a wear self-compensating fixed caliper disc brake, comprising a caliper body, one side of which is fixedly connected to an oil inlet pipe, and also comprising: a compensation adjustment mechanism, a cleaning protection mechanism and a detection protection mechanism.

[0008] The compensation adjustment mechanism comprises a brake piston, the compensation adjustment mechanism is used to adjust the distance between the brake piston and the brake disc, and the cleaning and protection mechanism is used to clean foreign particles adhered to the brake piston and the brake disc.

[0009] Preferably, the compensation adjustment mechanism also includes a connecting hose, which is fixedly connected to the oil inlet pipe, and a mounting sleeve is symmetrically penetrated and slidably connected to the inner wall of the caliper body, the connecting hose is connected to the mounting sleeve, the mounting sleeve penetrates the caliper body, and the brake piston is slidably connected to the inner surface of the mounting sleeve.

[0010] Preferably, a compensating screw is symmetrically rotatably connected to the outer wall of the caliper body, a sliding sleeve is provided on the threaded sleeve on the outer surface of the compensating screw, one end of the sliding sleeve is rotatably connected to an adjacent mounting sleeve, the sliding sleeve is slidably connected to the caliper body, a ball seat is symmetrically rotatably connected to the caliper body, and the ball seat is in contact with the sliding sleeve.

[0011] Preferably, the cleaning and protection mechanism includes an installation groove, which is symmetrically opened in the caliper body, an air charging box is fixedly connected in the installation groove, a push-pull plate is slidably connected in the air charging box, a drive frame is fixedly connected to one side of the push-pull plate, a one-way air intake valve is fixedly connected to one side of the air charging box, and the one-way air intake valve runs through the caliper body.

[0012] Preferably, a movable hose is equidistantly passed through and fixedly connected to one side of the pliers body, a blowing nozzle is fixedly connected to one end of the movable hose, the movable hoses are all connected to the inflation box, a connecting frame is fixedly connected between the blowing nozzles, a sliding block is fixedly connected to one side of the connecting frame, and the sliding block is slidably connected to the pliers body.

[0013] Preferably, a spring telescopic rod is fixedly connected between the sliding block and the clamp body, a linkage rod is fixedly connected to the side of the push-pull plate away from the drive frame, the linkage rod passes through the inflation box and the clamp body, a protrusion is fixedly connected to the top of the linkage rod, and the bottom of the sliding block and the top of the protrusion are both set to be arc-shaped.

[0014] Preferably, the detection and protection mechanism includes a rotating ring, which is rotatably connected to both sides of the inner wall of the caliper, and is sleeved on the outer surface of the brake piston. One end of the rotating ring is equidistantly fixedly connected to a scraper rod, and a through hole is opened on the outer wall of the scraper rod.

[0015] Preferably, one side of one of the scraper rods is fixedly connected to an infrared transmitter, and the other side of the scraper rod is fixedly connected to an infrared receiver, the infrared transmitter and the infrared receiver are arranged opposite to each other, the outer surface of the rotating ring is fixedly connected to a push-pull column, and the outer surface of the push-pull column is slidably connected to a linkage block.

[0016] Preferably, a guide plate is fixedly connected to the bottom of the linkage rod, a wave groove is provided on one side of the guide plate, a support sleeve is fixedly connected to one side of the caliper body, a sliding column is slidably connected through the support sleeve, a guide column is fixedly connected to the outer surface of the sliding column, the guide column is slidably connected to the wave groove, and the lower end of the sliding column is rotatably connected to the linkage block.

[0017] Compared with the prior art, the present invention provides a wear self-compensating fixed caliper disc brake, which has the following beneficial effects: 1. Through the setting of the compensation adjustment mechanism and the detection and protection mechanism, when the brake piston is worn and becomes thinner due to wear, the compensation screw drives the sliding sleeve, the mounting sleeve and the brake piston to move an appropriate distance toward the brake disc to complete the compensation for the wear thickness. The self-compensation work of the brake piston wear can be automatically completed, which improves the safety during braking, thereby ensuring the accuracy and effect of the caliper during braking.

[0018] In addition, by changing the angle at which the infrared transmitter emits infrared signals, the uniformity of brake piston wear can be detected. If during the rotation of the infrared transmitter, the infrared receiver sometimes receives infrared signals and sometimes the infrared signals are blocked by the brake piston, this means that the brake piston wears unevenly. Uneven wear will cause uneven friction between the brake piston and the brake disc, aggravating local wear and may even cause the brake disc to deform or crack. The alarm can then be activated through the controller to send out an alarm signal to ensure that staff can discover and solve the problem in a timely manner.

[0019] 2. By setting up the cleaning protection mechanism, the opposite side of the brake piston and the brake disc can be cleaned. At the same time, through the cooperation between the protrusion and the sliding block, it can swing up and down during the cleaning process. The up and down swinging action can increase the contact area, angle and contact frequency between the airflow blown out of the blowing nozzle and the surface to be cleaned, so as to more comprehensively remove foreign particles, reduce or eliminate these dead corners, and improve the thoroughness of cleaning. The up and down swinging cleaning method helps to ensure that the cleaning force is more evenly distributed on the entire surface to be cleaned, ensures the close fit of the brake piston and the brake disc, and improves the braking performance. At the same time, when the brake piston and brake disc are frequently used and become hot, they can also be cooled by blowing air through the cleaning protection mechanism, and the swinging motion will also increase the area and effect of heat dissipation.

[0020] 3. The outer surface of the brake piston is scraped by a scraper rod to improve the cleanliness of the outer surface of the brake piston and prevent foreign particles on the outside of the brake piston from falling into between the brake piston and the brake pad due to shaking when the brake piston slides and approaches the brake disc, thereby avoiding the problem that foreign particles may cause scratches or wear on the surface of the brake disc during braking, thereby shortening the service life of the brake disc, further improving the safety and stability of the caliper when in use. At the same time, through the setting of the through hole, the contact area between the scraper rod and the outside air can be increased to avoid affecting the heat dissipation effect of the brake piston and ensure the stability of the heat dissipation of the brake piston. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural diagram of the present invention.

[0022] Figure 2 For the present invention Figure 1 Middle section structural diagram.

[0023] Figure 3 It is a three-dimensional structural diagram of the installation groove in the present invention.

[0024] Figure 4 It is a cross-sectional structural diagram of the inflation box in the present invention.

[0025] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle.

[0026] Figure 6 It is a three-dimensional structural diagram of the rotating ring in the present invention.

[0027] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point B in the middle.

[0028] Figure 8 For the present invention Figure 6 Enlarged structural diagram at center C.

[0029] In the figure: 1. Clamp body.

[0030] 2. Oil inlet pipe; 201. Connecting hose; 202. Mounting sleeve; 203. Brake piston; 204. Compensating screw; 205. Sliding sleeve; 206. Ball seat.

[0031] 301, mounting slot; 302, inflation box; 303, push-pull plate; 304, drive frame; 305, movable hose; 306, blowing nozzle; 307, connecting frame; 308, sliding block; 309, spring telescopic rod; 310, linkage rod; 311, protrusion.

[0032] 401, rotating ring; 402, scraper rod; 403, infrared transmitter; 404, through hole; 405, infrared receiver; 406, push-pull column; 407, support sleeve; 408, sliding column; 409, guide column; 410, guide plate; 411, wave groove. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] The present invention is further described in detail below based on the accompanying drawings and embodiments.

[0035] Embodiments of the present invention: Please refer to Figures 1 to 8 As shown: In order to solve the problem mentioned in the technical solution, an embodiment of the present application provides a wear self-compensating fixed caliper disc brake, including a caliper body 1, one side of the caliper body 1 is fixedly connected to an oil inlet pipe 2, and also includes: a compensation adjustment mechanism, a cleaning protection mechanism and a detection protection mechanism.

[0036] The compensating adjustment mechanism includes a brake piston 203, which is composed of a piston rod and a brake pad. The compensating adjustment mechanism is used to adjust the distance between the brake piston 203 and the brake disc. The cleaning and protection mechanism is used to clean the foreign particles adhered to the brake piston 203 and the brake disc.

[0037] The compensation adjustment mechanism also includes a connecting hose 201, which is fixedly connected to the oil inlet pipe 2. The inner wall of the caliper body 1 is symmetrically penetrated and slidably connected with a mounting sleeve 202. The connecting hose 201 is connected to the mounting sleeve 202. The mounting sleeve 202 penetrates the caliper body 1. The brake piston 203 is slidably connected to the inner surface of the mounting sleeve 202. The outer wall of the caliper body 1 is symmetrically rotationally connected with a compensation screw 204. The outer surface of the compensation screw 204 is threadedly sleeved with a sliding sleeve 205. One end of the sliding sleeve 205 is rotationally connected to the adjacent mounting sleeve 202. The sliding sleeve 205 is slidably connected to the caliper body 1. A ball seat 206 is symmetrically rotationally connected inside the caliper body 1, and the ball seat 206 is in contact with the sliding sleeve 205.

[0038] The cleaning protection mechanism includes a mounting groove 301, which is symmetrically arranged in the pliers body 1, and a gas charging box 302 is fixedly connected in the mounting groove 301, and a push-pull plate 303 is slidably connected in the gas charging box 302, and a driving frame 304 is fixedly connected to one side of the push-pull plate 303, and a one-way air intake valve is fixedly connected to one side of the gas charging box 302, and the one-way air intake valve passes through the pliers body 1, and a movable hose 305 is fixedly connected to one side of the pliers body 1 at an equal distance, and a blowing nozzle 306 is fixedly connected to one end of the movable hose 305, and the movable hose 305 is connected to the gas charging box 30 2 are connected, a connecting frame 307 is fixedly connected between the blowing nozzles 306, a sliding block 308 is fixedly connected to one side of the connecting frame 307, the sliding block 308 is slidably connected to the clamp body 1, a spring telescopic rod 309 is fixedly connected between the sliding block 308 and the clamp body 1, a linkage rod 310 is fixedly connected to the side of the push-pull plate 303 away from the driving frame 304, the linkage rod 310 passes through the inflation box 302 and the clamp body 1, a convex block 311 is fixedly connected to the top of the linkage rod 310, and the bottom of the sliding block 308 and the top of the convex block 311 are both set to be arc-shaped.

[0039] In the prior art, during the braking process, friction is generated between the brake pad and the brake disc, thereby achieving deceleration or stopping. Due to this continuous friction, the surface material of the brake pad is gradually worn and consumed, resulting in its thickness gradually becoming thinner. Then, the distance between the thinned brake pad and the brake disc increases, affecting the accuracy and braking effect during braking. At the same time, when the brake pad is in use, the brake system may be affected by the external environment, such as the invasion of particles such as sand, dust, and pebbles. These particles will adhere to the brake pad. The presence of foreign particles may destroy the close fit between the brake pad and the brake disc, resulting in a decrease in braking performance. Compared with the prior art, the implementation of this embodiment cleans the brake piston 203 and the opposite side of the brake disc. At the same time, through the cooperation between the protrusion 311 and the sliding block 308, it swings up and down during the cleaning process. The up and down swinging action can increase the contact area, angle and contact frequency of the airflow blown out by the blowing nozzle 306 and the surface to be cleaned, so as to more comprehensively remove foreign particles, reduce or eliminate these dead corners, and improve the thoroughness of cleaning. The up and down swinging cleaning method helps to ensure that the cleaning force is more evenly distributed on the entire surface to be cleaned, ensures the close fit of the brake piston 203 and the brake disc, and improves the braking performance. At the same time, when the brake piston 203 and the brake disc are frequently used and become hot, they can also be cooled by blowing air through the cleaning protection mechanism, and the swinging motion will also increase the area and effect of heat dissipation.

[0040] For further examples, please refer to Figures 1 to 8 As shown: the detection and protection mechanism includes a rotating ring 401, which is rotatably connected to both sides of the inner wall of the caliper body 1, and the rotating rings 401 are sleeved on the outer surface of the brake piston 203. One end of the rotating ring 401 is fixedly connected to a scraper rod 402 at an equal distance. The outer wall of the scraper rod 402 is provided with a through hole 404. One side of one scraper rod 402 is fixedly connected to an infrared transmitter 403, and one side of the other scraper rod 402 is fixedly connected to an infrared receiver 405. The infrared transmitter 403 and the infrared receiver 405 are arranged opposite to each other. Each relative infrared transmitter 403 and infrared receiver 405 can be arranged at the same time. Multiple groups are arranged on the scraper rod 402 set at a distance, so that the detection angle increases when it rotates, the outer surface of the rotating ring 401 is fixedly connected with a push-pull column 406, the outer surface of the push-pull column 406 is slidably connected with a linkage block, the bottom of the linkage rod 310 is fixedly connected with a guide plate 410, a wave groove 411 is opened on one side of the guide plate 410, a support sleeve 407 is fixedly connected to one side of the pliers body 1, a sliding column 408 is slidably connected through the support sleeve 407, the outer surface of the sliding column 408 is fixedly connected with a guide column 409, the guide column 409 is slidably connected to the wave groove 411, and the lower end of the sliding column 408 is rotatably connected to the linkage block.

[0041] The implementation of this embodiment enables the compensation screw 204 to drive the sliding sleeve 205, the mounting sleeve 202 and the brake piston 203 to move an appropriate distance toward the brake disc, thereby completing the compensation for the wear thickness. It can automatically complete the self-compensation work for the wear of the brake piston 203, thereby improving the safety during braking, thereby ensuring the accuracy and effect of the caliper body 1 during braking.

[0042] The working principles of all the contents in the above embodiments are as follows: in the initial state: one end of the compensation screw 204 is connected to the external drive motor, one side of the drive frame 304 is fixedly connected to the external drive cylinder, the infrared transmitter 403 and the infrared receiver 405 are electrically connected to the external controller, and the external controller is electrically connected to the external drive motor and the alarm. Under normal circumstances, the infrared signal emitted by the infrared transmitter 403 will be blocked by the brake piston 203, and at this time the infrared receiver 405 will not receive the infrared signal emitted by the infrared transmitter 403.

[0043] The following is the working process of the cleaning protection mechanism: after the caliper body 1 has been used for a certain period of time, the external driving cylinder is started, and the driving frame 304 is driven by the external driving cylinder to push and pull the push-pull plate 303 to slide back and forth. When the push-pull plate 303 slides toward the driving frame 304, the space between the push-pull plate 303 and the inflation box 302 expands, generating negative pressure, thereby allowing outside air to enter the inflation box 302 from the one-way air inlet valve. When the push-pull plate 303 slides in the direction away from the driving frame 304, the space between the push-pull plate 303 and the inflation box 302 becomes smaller, thereby pushing the airflow in the inflation box 302 from the inflation box 302 into the movable hose 305, and then blown out from the blowing nozzle 306. The blown airflow blows at a certain speed toward the impurity particles adhered to the opposite side of the brake piston 203 and the brake disc, exerting an impact force on the granular impurities, thereby blowing them off, completing the cleaning of the brake piston 203 and the opposite side of the brake disc.

[0044] In addition, when the push-pull plate 303 moves back and forth, the push-pull plate 303 will simultaneously push the linkage rod 310 to slide back and forth, so that the linkage rod 310 drives the protrusion 311 to approach the bottom of the sliding block 308. Since the top of the protrusion 311 and the bottom of the sliding block 308 are both set to be arc-shaped, therefore, in the process of the reciprocating sliding of the protrusion 311, the arc-shaped surface of the protrusion 311 will squeeze the arc-shaped surface of the sliding block 308. At the same time, with the cooperation of the compression and rebound of the spring telescopic rod 309, the sliding block 308 moves up and down, thereby driving the connecting frame 307 to move up and down at the same time, so that the blowing nozzle 306 swings up and down at the same time during the blowing process, thereby increasing the angle of blowing cleaning.

[0045] By setting the cleaning protection mechanism, the brake piston 203 and the opposite side of the brake disc can be cleaned. At the same time, through the cooperation between the protrusion 311 and the sliding block 308, it can swing up and down during the cleaning process. The up and down swinging action can increase the contact area, angle and contact frequency between the airflow blown out by the blowing nozzle 306 and the surface to be cleaned, so as to more comprehensively remove foreign particles, reduce or eliminate these dead corners, and improve the thoroughness of cleaning. The up and down swinging cleaning method helps to ensure that the cleaning force is more evenly distributed on the entire surface to be cleaned, ensuring the close fit between the brake piston 203 and the brake disc, and improving the braking performance. At the same time, when the brake piston 203 and the brake disc are frequently used and hot, they can also be blown to dissipate heat through the cleaning protection mechanism, and through the swinging movement, the area and effect of heat dissipation will also be increased.

[0046] Please refer to the above working process Figures 1 to 8 .

[0047] The following is the working process of the compensation adjustment mechanism and the detection and protection mechanism: Furthermore, when the cleaning and protection mechanism is in use, the linkage rod 310 slides back and forth to drive the guide plate 410 to slide back and forth, thereby causing the wave groove 411 to move back and forth. Through the wave-shaped setting of the wave groove 411, when moving, the arc surface of the wave-shaped wave groove 411 will push the guide column 409 to drive the sliding column 408 to slide up and down, thereby causing the sliding column 408 to pull the lower end linkage block to move up and down, so that the linkage block pulls the push-pull column 406 to drive the rotating ring 401 to rotate back and forth, thereby driving the scraper rod 402 to rotate back and forth, so that the scraper rod 402 is against the outer surface of the brake piston 203. Scraping is performed to improve the cleanliness of the outer surface of the brake piston 203, and to prevent foreign particles on the outside of the brake piston 203 from falling into between the brake piston 203 and the brake pad due to shaking when the brake piston 203 slides and approaches the brake disc, thereby avoiding the problem that foreign particles may cause scratches or wear on the surface of the brake disc during braking, thereby shortening the service life of the brake disc, further improving the safety and stability of the caliper body 1 when in use. At the same time, through the setting of the through hole 404, the contact area between the scraper rod 402 and the outside air can be increased, avoiding affecting the heat dissipation effect of the brake piston 203, and ensuring the stability of the heat dissipation of the brake piston 203.

[0048] In addition, through the setting of the infrared transmitter 403 and the infrared receiver 405, when the brake piston 203 is worn, as the brake piston 203 becomes thinner due to wear, the infrared rays emitted by the infrared transmitter 403 are no longer blocked by the brake piston 203. At this time, the infrared rays emitted by the infrared transmitter 403 will be received by the infrared receiver 405. The received signal is transmitted to the external controller, and then the external controller drives the external drive motor to drive the compensation screw 204 to rotate, so that the compensation screw 204 drives the sliding sleeve 205, the mounting sleeve 202 and the brake piston 203 to move an appropriate distance toward the brake disc, completing the compensation for the wear thickness, and at the same time continuing to block the infrared rays emitted by the infrared transmitter 403. At this time, the controller controls the external drive motor to stop working, thereby completing the self-compensation work for the wear of the brake piston 203, thereby ensuring the accuracy and effect of the caliper body 1 during braking.

[0049] Furthermore, when the rotating ring 401 drives the scraper rod 402 to rotate back and forth at an appropriate angle, the scraper rod 402 will also drive the infrared transmitter 403 to rotate at a certain angle, so that the angle at which the infrared transmitter 403 transmits the infrared signal changes. By changing the angle at which the infrared transmitter 403 transmits the infrared signal, the uniformity of the wear of the brake piston 203 can be detected. If during the rotation of the infrared transmitter 403, the infrared receiver 405 sometimes receives the infrared signal and sometimes the infrared signal is blocked by the brake piston 203, this means that the brake piston 203 is unevenly worn. Uneven wear will cause uneven friction between the brake piston 203 and the brake disc, aggravating local wear and even causing deformation or cracks of the brake disc. Then, the alarm can be turned on through the controller to send out an alarm signal to ensure that the staff can find and solve the problem in time.

[0050] Please refer to the above working process Figures 1 to 8 .

[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wear self-compensating fixed caliper disc brake, comprising a caliper body (1), one side of the caliper body (1) being fixedly connected to an oil inlet pipe (2), characterized in that: It also includes: a compensation adjustment mechanism, a cleaning and protection mechanism, and a detection and protection mechanism; the compensation adjustment mechanism includes a brake piston (203), the compensation adjustment mechanism is used to adjust the distance between the brake piston (203) and the brake disc, and the cleaning and protection mechanism is used to clean foreign particles adhered to the brake piston (203) and the brake disc.

2. A wear self-compensating fixed caliper disc brake according to claim 1, characterized in that: The compensation adjustment mechanism also includes a connecting hose (201), the connecting hose (201) is fixedly connected to the oil inlet pipe (2), the inner wall of the caliper body (1) is symmetrically penetrated and slidably connected with a mounting sleeve (202), the connecting hose (201) is connected to the mounting sleeve (202), the mounting sleeve (202) penetrates the caliper body (1), and the brake piston (203) is slidably connected to the inner surface of the mounting sleeve (202).

3. A wear self-compensating fixed caliper disc brake according to claim 2, characterized in that: The outer wall of the caliper body (1) is symmetrically rotatably connected with a compensating screw (204); a sliding sleeve (205) is provided on the outer surface of the compensating screw (204) through a threaded sleeve; one end of the sliding sleeve (205) is rotatably connected to an adjacent mounting sleeve (202); the sliding sleeve (205) is slidably connected to the caliper body (1); a ball seat (206) is symmetrically rotatably connected inside the caliper body (1); the ball seat (206) is in contact with the sliding sleeve (205).

4. The wear self-compensating fixed caliper disc brake according to claim 1, characterized in that: The cleaning and protection mechanism comprises a mounting groove (301), the mounting groove (301) being symmetrically arranged in the caliper body (1), an air charging box (302) being fixedly connected in the mounting groove (301), a push-pull plate (303) being slidably connected in the air charging box (302), a driving frame (304) being fixedly connected to one side of the push-pull plate (303), a one-way air intake valve being fixedly connected to one side of the air charging box (302), and the one-way air intake valve passing through the caliper body (1).

5. The wear self-compensating fixed caliper disc brake according to claim 4, characterized in that: A movable hose (305) is fixedly connected to one side of the pliers body (1) at equal intervals, and an air blowing nozzle (306) is fixedly connected to one end of the movable hose (305). The movable hose (305) is communicated with the inflation box (302), and a connecting frame (307) is fixedly connected between the air blowing nozzles (306). A sliding block (308) is fixedly connected to one side of the connecting frame (307), and the sliding block (308) is slidably connected to the pliers body (1).

6. A wear self-compensating fixed caliper disc brake according to claim 5, characterized in that: A spring telescopic rod (309) is fixedly connected between the sliding block (308) and the clamp body (1); a linkage rod (310) is fixedly connected to the side of the push-pull plate (303) away from the drive frame (304); the linkage rod (310) passes through the inflation box (302) and the clamp body (1); a protrusion (311) is fixedly connected to the top of the linkage rod (310); and the bottom of the sliding block (308) and the top of the protrusion (311) are both arranged in an arc shape.

7. A wear self-compensating fixed caliper disc brake according to claim 6, characterized in that: The detection and protection mechanism comprises a rotating ring (401), the rotating ring (401) is rotatably connected to both sides of the inner wall of the caliper body (1), the rotating ring (401) is sleeved on the outer surface of the brake piston (203), one end of the rotating ring (401) is equidistantly fixedly connected to a scraper rod (402), and the outer wall of the scraper rod (402) is provided with a through hole (404).

8. The wear self-compensating fixed caliper disc brake according to claim 7, characterized in that: One side of one of the scraping rods (402) is fixedly connected to an infrared transmitter (403), and one side of the other scraping rod (402) is fixedly connected to an infrared receiver (405). The infrared transmitter (403) and the infrared receiver (405) are arranged opposite to each other. A push-pull column (406) is fixedly connected to the outer surface of the rotating ring (401), and a linkage block is slidably connected to the outer surface of the push-pull column (406).

9. The wear self-compensating fixed caliper disc brake according to claim 8, characterized in that: A guide plate (410) is fixedly connected to the bottom of the linkage rod (310), a wave groove (411) is formed on one side of the guide plate (410), a support sleeve (407) is fixedly connected to one side of the pliers body (1), a sliding column (408) is slidably connected through the support sleeve (407), a guide column (409) is fixedly connected to the outer surface of the sliding column (408), the guide column (409) is slidably connected to the wave groove (411), and the lower end of the sliding column (408) is rotatably connected to the linkage block.

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