A brake shoe adjustment device to prevent brake shoe wear.

Abstract

This invention discloses a brake shoe adjustment device to prevent uneven brake shoe wear, relating to the field of brake shoe adjustment. The outer end of the brake shoe body is connected to an adjustable preset shaft, which is used to adjust the position of the brake shoe by connecting with an external preset transmission device. The inner wall of the brake shoe body has a built-in transverse guide groove, and a built-in detachable contact component is nested inside the groove. A first return spring is fixedly connected to the inner end of the detachable contact component. This brake shoe adjustment device, by adaptively adjusting the positioning state of the lateral movable contact component through an auxiliary guiding structure, performs a centered contact deceleration operation on the contacting wheel from both sides. This avoids the uneven wear phenomenon that cannot be guaranteed by direct contact deceleration, allowing the moving wheel to decelerate stably according to different force states during high-speed operation, preventing positional deviation, and achieving stable positioning and speed limiting of the contacting brake shoe.

Description

Technical Field

[0001] This invention relates to the field of brake shoe adjustment technology, specifically to a brake shoe adjustment device that can prevent brake shoe wear. Background Technology

[0002] Brake shoes are braking components that directly rub against the wheels to stop a train during operation. They are tile-shaped brake pads made of cast iron or other materials, and require corresponding brake shoe adjustment devices for auxiliary operation during their work.

[0003] For example, a brake shoe angle adjustment device disclosed in patent CN112758129A includes: a lever support plate disposed on a brake lever; a through hole formed in the lever support plate; a balance screw slidably inserted in the through hole; one end of the balance screw being rotatably connected to the brake shoe support; and the other end of the balance screw being threadedly connected to an adjusting nut; a first balance spring disposed between the lever support plate and one end of the balance screw; and a second balance spring disposed between the lever support plate and the adjusting nut. This adjustment device can adjust the angle of the brake shoe relative to the wheel, solving problems such as jamming, deformation, and cracking in brake shoe adjustment devices. Furthermore, the first and second balance springs transform rigid contact into flexible contact, reducing damage to the adjustment device caused by braking.

[0004] For example, patent CN211599358U discloses an automatic brake shoe spacing adjustment device, which includes a threaded rod and a threaded tube. A fixed sleeve, a gear disk, and a rotating disk are sequentially fitted onto the outer surface of the threaded tube. An adjusting element is provided on the outer surface of the rotating disk. A manual disk is provided at the end of the threaded tube away from the threaded rod. A connecting pipe is provided on one side of the manual disk. A positioning hole is opened on the outer side of the connecting pipe. A fixing hole is opened through the outer surface of the threaded tube. A fixing component is installed inside the fixing hole, and the fixing component corresponds to the positioning hole. The device components are fixed by threaded engagement or by fixing components, which not only simplifies the structure but also facilitates installation and replacement and maintenance of the device components.

[0005] For example, patent CN216098679U discloses a locomotive brake shoe replacement and adjustment device, which includes: a telescopic assembly, the telescopic assembly including a sleeve rod and a telescopic rod, the telescopic rod being sleeved inside the sleeve rod; a claw plate assembly, the claw plate assembly including a connecting plate and claws, the claws being two or more, the two or more claws being spaced apart circumferentially along the connecting plate, and the two or more claws being rotatably connected to the connecting plate, the connecting plate having a mating hole on the side facing away from the claws, the mating hole being detachably connected to one end of the telescopic rod, and the claws being used to engage with the handwheel of the brake adjuster;

[0006] Most of the aforementioned existing technologies improve the overall structure. However, existing brake shoe adjustment devices mostly operate through direct contact deceleration. As the moving wheels are subjected to different stress states during high-speed operation, they are prone to positional deviations, making it impossible for the contacting brake shoes to stably perform positioning and speed limiting, thus limiting their usability. Summary of the Invention

[0007] The purpose of this invention is to provide a brake shoe adjustment device that can prevent brake shoe wear, thereby solving the problem in the background art where most of the deceleration operations are direct contact types. However, due to the fact that the moving wheels are prone to positional deviations during high-speed operation depending on different force states, the contacting brake shoes cannot stably perform positioning and speed limiting operations.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a brake shoe adjustment device to prevent brake shoe wear, comprising a brake shoe body and an adjustment movable preset shaft, wherein the outer end of the brake shoe body is connected to the adjustment movable preset shaft, and the position movement is performed by connecting the adjustment movable preset shaft to an external preset transmission device;

[0009] The inner wall of the brake shoe body is provided with a built-in transverse guide groove, and a built-in detachable contact is nested inside the built-in transverse guide groove. The inner end of the built-in detachable contact is fixedly connected to a first return spring, and the first return spring is fixedly connected to the inner side of the brake shoe body. A lateral movable docking part is nested and docked on the outer side of the brake shoe body, and an auxiliary guide structure is provided between the lateral movable docking part and the brake shoe body. The positioning state of the lateral movable docking part is adaptively adjusted by the auxiliary guide structure. An auxiliary pressure relief structure is provided on the inner side of the lateral movable docking part, and the outer side of the contacting wheel is quickly decelerated by the auxiliary pressure relief structure.

[0010] Furthermore, the auxiliary guide structure is provided with a reserved steel wire rope, which is connected to the lower outer side of the built-in detachable contact member. The reserved steel wire rope runs through the inner side of the brake shoe body, and the end of the reserved steel wire rope is connected to the outer end of the lateral movable docking member.

[0011] Furthermore, the lateral movable docking member has a built-in liquid storage cavity inside, and a reserved one-way atomizing nozzle is provided at the outer end of the lateral movable docking member. The inner wall of the built-in liquid storage cavity is fitted with a built-in fitting docking member, and the built-in fitting docking member is connected to the interior of the lateral movable docking member. The upper end of the lateral movable docking member is provided with a preset supply channel that can be connected to an external supply hose.

[0012] Furthermore, when the built-in detachable contact is pressed, it compresses the first return spring and moves along the interior of the brake shoe body. The built-in detachable contact drives the lateral movable docking part to form a traction structure through the reserved steel wire rope. When the brake shoe body contacts the wheel through the preset drive structure, the built-in detachable contact at its inner end will be pre-stressed, thereby causing the built-in detachable contact to be compressed and compress the first return spring to move along the interior of the brake shoe body.

[0013] Furthermore, the lateral movable docking parts are symmetrically distributed about the center point of the brake shoe body, and the lateral movable docking parts form a nested structure along the outer side of the brake shoe body, with the built-in fitting docking parts at the inner end of the lateral movable docking parts fitting and docking along their interior.

[0014] Furthermore, the auxiliary pressure relief structure is provided with a transverse nested docking member, which docks at the lower end of the lateral movable docking member. An external friction detachable member is bolted to the outer side of the transverse nested docking member, and the position of the external friction detachable member corresponds to the inner end of the lateral movable docking member.

[0015] Furthermore, a second return spring is fixedly connected to the inner wall of the lateral movable docking member, and the outer side of the second return spring contacts the inner end of the external friction detachable member. A magnetic docking member is fixedly connected to the outer side of the external friction detachable member and the lateral movable docking member. The laterally nested docking member slides laterally along the lower end of the lateral movable docking member, and the same magnetic pole docking member at the inner end of the external friction detachable member and the inner end of the lateral movable docking member form a reciprocating movable support structure.

[0016] Furthermore, during the inward movement of the lateral movable docking member, the external friction detachable member at its inner end is pre-stressed, and the external friction detachable member slides laterally along the lower end of the lateral movable docking member through the lateral nested docking member.

[0017] Furthermore, the external friction detachable component forms a reset support along the inner end of the lateral movable docking component through the contacting second reset spring, and the external friction detachable component forms a reciprocating movable support structure with the inner end of the lateral movable docking component through the magnet docking component with the same magnetic pole. The reserved one-way atomizing nozzle on the outside performs atomization cooling treatment to the outer position of the wheel, thereby effectively regulating the temperature during the high-speed wheel deceleration process and improving the service life of the device.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] This brake shoe adjustment device, which prevents uneven wear of the brake shoe, adaptively adjusts the positioning state of the lateral movable docking part through an auxiliary guide structure. When the brake shoe body contacts the wheel through a preset drive structure, the built-in detachable contact part at its inner end will be pre-stressed, thereby compressing the first reset spring and moving along the inside of the brake shoe body. At this time, the inwardly moving built-in detachable contact part will drive the lateral movable docking part to move inward through a reserved steel wire rope, thereby performing a centered contact deceleration operation on the contacting wheel from both sides. This avoids the phenomenon that direct contact deceleration cannot guarantee the wear of the brake shoe, allowing the moving wheel to decelerate stably according to different force states during high-speed operation, preventing positional deviation, and realizing stable positioning and speed limiting operation of the contacting brake shoe.

[0020] Furthermore, as the lateral movable docking part moves inward under force, its outer external friction detachable part will be pre-stressed, thereby sliding laterally along the lower end of the lateral movable docking part through the lateral nested docking part. This, together with the same-name magnetic pole docking part at the inner end of the outer friction detachable part, forms a reciprocating movable support structure with the inner end of the lateral movable docking part. This effectively adapts to the uniform speed of contact processing according to different high-speed wheel movement states, preventing hard direct contact from damaging the wheel.

[0021] Furthermore, an auxiliary pressure relief structure is provided. This structure rapidly decelerates the outer side of the contacting wheel. During the reciprocating inward movement of the external friction detachable component, when its inner end contacts the built-in fitting docking component, it pushes the built-in fitting docking component to apply pressure along the built-in liquid storage cavity inside the lateral movable docking component. This pressure is then atomized and cooled through the reserved one-way atomizing nozzle on the outer side, effectively regulating the temperature during the high-speed wheel deceleration process and improving the service life of the device. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the half-section three-dimensional structure of the present invention;

[0024] Figure 3 This is a partial three-dimensional structural schematic diagram of the present invention;

[0025] Figure 4 For the present invention Figure 3 A magnified schematic diagram of the central part of the structure;

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the adjustable preset axis of the present invention;

[0027] Figure 6 This is a three-dimensional structural diagram of the first reset spring of the present invention;

[0028] Figure 7 This is a three-dimensional structural diagram of the magnet docking component of the present invention;

[0029] Figure 8 This is a three-dimensional structural diagram of the external friction detachable component of the present invention.

[0030] In the diagram: 1. Brake shoe body; 2. Adjustable preset shaft; 3. Built-in detachable contact; 4. First return spring; 5. Reserved steel wire rope; 6. Lateral movable docking part; 7. Built-in liquid storage cavity; 8. Reserved one-way atomizing nozzle; 9. Built-in fitting docking part; 10. External friction detachable part; 11. Magnet docking part; 12. Second return spring; 13. Lateral nested docking part; 14. Built-in lateral guide groove. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1: Please refer to Figure 1-8 The present invention provides the following technical solution: a brake shoe adjustment device for preventing brake shoe wear, comprising a brake shoe body 1, an adjustment movable preset shaft 2, a built-in detachable contact part 3, a first return spring 4, a reserved steel wire rope 5, a lateral movable docking part 6, a built-in liquid storage cavity 7, a reserved one-way atomizing nozzle 8, a built-in fitting docking part 9, an external friction detachable part 10, a magnetic docking part 11, a second return spring 12, a transverse nested docking part 13, and a built-in transverse guide groove 14;

[0033] The outer end of the brake shoe body 1 is connected to an adjustable preset shaft 2, which is connected to an external preset transmission device to perform position movement through the adjustable preset shaft 2.

[0034] The inner wall of the brake shoe body 1 is provided with a built-in transverse guide groove 14, and a built-in detachable contact 3 is nested inside the built-in transverse guide groove 14. The inner end of the built-in detachable contact 3 is fixedly connected to a first reset spring 4, and the first reset spring 4 is fixedly connected to the inner side of the brake shoe body 1. A lateral movable docking part 6 is nested and docked on the outer side of the brake shoe body 1, and an auxiliary guide structure is provided between the lateral movable docking part 6 and the brake shoe body 1. The positioning state of the lateral movable docking part 6 is adaptively adjusted by the auxiliary guide structure.

[0035] The auxiliary guiding structure is equipped with a reserved steel wire rope 5, which is connected to the lower outer side of the built-in detachable contact 3. The reserved steel wire rope 5 runs along the inner side of the brake shoe body 1, and its end is connected to the outer end of the lateral movable docking part 6. The lateral movable docking part 6 has a built-in liquid storage cavity 7 inside, and a reserved one-way atomizing nozzle 8 is provided at its outer end. A built-in fitting docking part 9 is fitted to the inner wall of the built-in liquid storage cavity 7, and the built-in fitting docking part 9 is connected to the interior of the lateral movable docking part 6. The upper end of the lateral movable docking part 6 is provided with a preset supply channel that can be connected to an external supply hose. When the built-in detachable contact 3 is compressed, it compresses the first return spring 4 and moves along the interior of the brake shoe body 1. The built-in detachable contact 3 drives the lateral movable docking part 6 to form a traction structure through the reserved steel wire rope 5.

[0036] The lateral movable docking parts 6 are symmetrically distributed about the center point of the brake shoe body 1, and form a nested structure along the outer side of the brake shoe body 1. The built-in fitting docking parts 9 at the inner end of the lateral movable docking parts 6 fit together along their interior. When the brake shoe body 1 contacts the wheel through the preset drive structure, the built-in detachable contact part 3 at its inner end will be pre-stressed, thereby compressing the first return spring 4 and moving along the interior of the brake shoe body 1. At this time, the inwardly moving built-in detachable contact part 3 will drive the lateral movable docking parts 6 to move inward through the reserved steel wire rope 5, thereby performing a centered contact deceleration operation on the contacting wheel from both sides, avoiding the inability of direct contact deceleration to ensure safety. This system addresses the issue of uneven wear and deceleration of the brake shoes, allowing the moving wheel to decelerate stably under different stress conditions during high-speed operation, preventing positional deviations, and ensuring stable positioning and speed limiting of the contacting brake shoes. As the lateral movable docking piece 6 moves inward under force, its outer external friction detachable piece 10 is pre-stressed, causing the laterally nested docking piece 13 to slide laterally along the lower end of the lateral movable docking piece 6. This, combined with the matching magnetic pole docking piece 11 at the inner end of the outer friction detachable piece 10, forms a reciprocating movable support structure with the inner end of the lateral movable docking piece 6. This effectively provides uniform adaptive contact processing according to different high-speed wheel movement states, preventing damage to the wheel from hard direct contact.

[0037] Example 2: Based on Example 1, an auxiliary pressure relief structure is also disclosed, the specific structure of which is as follows:

[0038] The inner side of the lateral movable docking part 6 is provided with an auxiliary pressure relief structure, which quickly decelerates the outer side of the contacting wheel.

[0039] The auxiliary pressure relief structure is equipped with a transverse nested docking member 13, which docks with the lower end of the lateral movable docking member 6. An external friction detachable member 10 is bolted to the outer side of the transverse nested docking member 13, and the external friction detachable member 10 corresponds to the inner end of the lateral movable docking member 6. A second return spring 12 is fixedly connected to the inner wall of the lateral movable docking member 6, and the outer side of the second return spring 12 contacts the inner end of the external friction detachable member 10. A magnetic docking member 11 is fixedly connected to the outer side of the external friction detachable member 10 and the lateral movable docking member 6. During the inward movement of the lateral movable docking member 6, the external friction detachable member 10 at its inner end is pre-stressed, and the external friction detachable member 10 slides laterally along the lower end of the lateral movable docking member 6 via the transverse nested docking member 13.

[0040] The external friction detachable part 10 forms a reset support along the inner end of the lateral movable docking part 6 through the contacting second reset spring 12, and the external friction detachable part 10 forms a reciprocating movable support structure with the inner end of the lateral movable docking part 6 through the magnet docking part 11 with the same magnetic pole; during the process of the external friction detachable part 10 reciprocating and moving inward under force, when its inner end contacts the built-in fitting docking part 9, it will push the built-in fitting docking part 9 to apply pressure along the inside of the built-in liquid storage cavity 7 on the inner side of the lateral movable docking part 6, so that it can perform atomization and cooling treatment to the outer position of the wheel through the reserved one-way atomizing nozzle 8 on the outside, thereby effectively regulating the temperature during the high-speed wheel deceleration process.

[0041] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A brake shoe adjustment device for preventing brake shoe wear, comprising a brake shoe body (1) and an adjustment movable preset shaft (2), wherein the outer end of the brake shoe body (1) is connected to the adjustment movable preset shaft (2), and the position movement is performed by connecting the adjustment movable preset shaft (2) to an external preset transmission device; Its features are: The inner wall of the brake shoe body (1) is provided with a built-in transverse guide groove (14), and a built-in detachable contact (3) is nested inside the built-in transverse guide groove (14). The inner end of the built-in detachable contact (3) is fixedly connected to a first reset spring (4), and the first reset spring (4) is fixedly connected to the inner side of the brake shoe body (1). The outer side of the brake shoe body (1) is nested with a lateral movable docking piece (6), and an auxiliary guide structure is provided between the lateral movable docking piece (6) and the brake shoe body (1). The positioning state of the lateral movable docking piece (6) is adaptively adjusted by the auxiliary guide structure. The inner side of the lateral movable docking part (6) is provided with an auxiliary pressure relief structure, which is used to quickly decelerate the outer side of the contacting wheel. The auxiliary guide structure is provided with a reserved steel wire rope (5), and the reserved steel wire rope (5) is connected to the lower outer side of the built-in detachable contact (3). The reserved steel wire rope (5) passes through the inner side of the brake shoe body (1), and the end of the reserved steel wire rope (5) is connected to the outer end of the lateral movable docking part (6). The lateral movable docking part (6) has an internal liquid storage cavity (7) and a reserved one-way atomizing nozzle (8) at the outer end of the lateral movable docking part (6). The inner wall of the internal liquid storage cavity (7) is fitted with an internal fitting docking part (9), and the internal fitting docking part (9) is connected to the interior of the lateral movable docking part (6). The upper end of the lateral movable docking part (6) is provided with a preset supply channel that can be connected to an external supply hose. The auxiliary pressure relief structure is provided with a transverse nested docking part (13), and the transverse nested docking part (13) docks at the lower end of the lateral movable docking part (6), and the outer side of the transverse nested docking part (13) is connected to an external friction detachable part (10) by bolts, and the position of the external friction detachable part (10) corresponds to the inner end position of the lateral movable docking part (6). The inner wall of the lateral movable docking part (6) is fixedly connected to a second return spring (12), and the outer side of the second return spring (12) contacts the inner end of the external friction detachable part (10). The external friction detachable part (10) and the outer side of the lateral movable docking part (6) are fixedly connected to a magnetic docking part (11).

2. The brake shoe adjusting device for preventing uneven wear of brake shoes according to claim 1, characterized in that: When the built-in detachable contact (3) is pressed, it compresses the first reset spring (4) and moves along the inside of the brake shoe body (1). The built-in detachable contact (3) drives the lateral movable docking part (6) to form a traction structure through the reserved steel wire rope (5).

3. The brake shoe adjusting device for preventing uneven wear of brake shoes according to claim 2, characterized in that: The lateral movable docking parts (6) are symmetrically distributed about the center point of the brake shoe body (1), and the lateral movable docking parts (6) form a nested structure along the outer side of the brake shoe body (1). The built-in fitting docking parts (9) at the inner end of the lateral movable docking parts (6) fit and dock along its interior.

4. A brake shoe adjusting device for preventing uneven wear of brake shoes according to claim 3, characterized in that: During the inward movement of the lateral movable docking member (6), the external friction detachable member (10) at its inner end is pre-stressed, and the external friction detachable member (10) slides laterally along the lower end of the lateral movable docking member (6) through the lateral nested docking member (13).

5. A brake shoe adjusting device for preventing uneven wear of brake shoes according to claim 4, characterized in that: The external friction detachable part (10) forms a reset support along the inner end of the lateral movable docking part (6) through the contacting second reset spring (12), and the external friction detachable part (10) forms a reciprocating movable support structure with the inner end of the lateral movable docking part (6) through the magnet docking part (11) with the same magnetic pole.

Images