A high-temperature resistant, self-recovering railway brake pad

Abstract

This invention relates to a high-temperature resistant, self-recovering railway brake pad, belonging to the technical field of railway braking devices. It includes a clamping plate, in which connecting posts are rotatably mounted within multiple equidistant circular grooves on the front side of the clamping plate. Mounting plates are fixed to the front of the connecting posts. Buffer adjustment components are provided between the mounting plates and the clamping plate. Brake pads are fitted and slidably mounted within the grooves on the front side of the mounting plates. Through the cooperation of the reset component, mounting posts, friction blocks, and brake pads, the friction blocks can automatically reset after braking. The reset spring in the reset component restores the friction blocks to their initial gap state after braking, achieving chip removal and heat dissipation. The cooperation between the buffer adjustment component and the mounting plates allows the buffer spring in the adjustment groove to buffer the mounting plate during high-speed emergency braking, preventing damage to the friction blocks due to instantaneous impact and improving the service life of the friction blocks.

Description

Technical Field

[0001] This invention relates to the field of railway braking device technology, specifically to a high-temperature resistant, self-recovering railway brake pad. Background Technology

[0002] As railway transportation continues to develop towards high speed and heavy load, train braking systems need to withstand more severe instantaneous impacts and high-temperature loads. As a core friction component, the brake pads' buffering performance, reset accuracy, and high-temperature resistance directly determine braking safety and service life.

[0003] During braking, the friction blocks on existing railway brake pads rub against the brake disc. However, after braking, the friction blocks lack an automatic reset structure, making them prone to swaying and abnormal clearance due to uneven force. This hinders the return to the initial state of equal clearance, affecting the discharge of friction dust from the gap. The accumulation of dust further impairs heat dissipation, thus reducing the brake pad's high-temperature resistance. In addition, the brake pad and clamping plate are mostly rigidly fixed, which is not conducive to absorbing the instantaneous impact force during braking. During high-speed emergency braking, the friction blocks are prone to damage, affecting their use in subsequent braking processes. This, combined with the abnormal clearance of the friction blocks, further reduces the brake pad's high-temperature self-recovery capability.

[0004] To address the aforementioned issues, innovative designs are urgently needed based on existing approaches. Summary of the Invention

[0005] The purpose of this invention is to provide a high-temperature resistant, self-recovering railway brake pad to solve the problems mentioned in the background. The technical solution of this invention addresses the problem that the existing technical solutions are too simplistic and provides a solution that is significantly different from the existing technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-temperature resistant self-recovering railway brake pad, comprising a clamping plate, wherein connecting columns are rotatably installed in multiple equally spaced circular grooves on the front side of the clamping plate, and mounting plates are fixed to the front side of the connecting columns. A buffer adjustment assembly is provided between the mounting plates and the clamping plate. A brake pad is fitted and slidably installed in the grooves on the front side of the mounting plates. Mounting columns are rotatably slidably inserted through multiple through holes on the brake pad. A friction block is fixed to the front end of each mounting column. Multiple mounting grooves are provided on the back of the brake pad, and these grooves communicate with the multiple through holes on the brake pad. An annular groove segment on the surface of the mounting column is elastically engaged with the inner wall of the mounting groove by a torsion spring. A reset assembly is provided between the mounting column and the mounting plate, and the reset assembly is used to adjust the gap state of the multiple friction blocks.

[0007] Optionally, the buffer adjustment assembly includes two sliding pillars and two adjustment slots. The two sliding pillars are symmetrically fixed to the rear side of the mounting plate, and the sliding pillars are slidably positioned in the adjustment slots by two symmetrical buffer springs on the outer side. The two adjustment slots are symmetrically opened on the front side of the clamping plate.

[0008] Optionally, the two sliding columns are symmetrically installed on the rear side of the mounting plate with respect to the center of the connecting column. The opening positions of the two adjusting slots on the clamping plate correspond to the positions of the sliding columns. The two adjusting slots are designed with an arc-shaped structure, and the arc center of the adjusting slot corresponds to the center of the connecting column.

[0009] Optionally, the mounting plates are distributed with equal gaps along the arc surface structure of the clamping plate, and the external shape of the mounting plates corresponds to the external shape of the brake pad.

[0010] Optionally, the friction block is designed as a polygonal structure, and multiple friction blocks on each brake pad are distributed and arranged with corresponding gaps according to the actual area of ​​the brake pad.

[0011] Optionally, the number of friction blocks on each brake pad corresponds to the number of mounting slots, and the number of mounting slots corresponds to the number of mounting posts.

[0012] Optionally, the reset assembly includes a limiting hole, which is formed on the middle partition of the mounting plate. A limiting block is fitted and slidably installed in the limiting hole. The front end of the limiting block is fixedly connected to the rear end of the mounting column, and the rear end of the limiting block is connected to the inner wall of the rear side of the mounting plate through a reset spring.

[0013] Optionally, the limiting block is designed to be hexagonal, and the structure of the limiting block corresponds to the structure of the limiting hole. The position of the limiting hole opened on the partition in the middle of the mounting plate corresponds to the position of the corresponding limiting block.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] This invention achieves automatic reset of the friction block after braking by setting up a reset component, mounting post, friction block, and brake pad in cooperation. The friction block generates an instantaneous force when it contacts the brake disc. The connected mounting post can drive the friction block backward and compress the reset spring, forming a first-level buffer. At the same time, the hexagonal limit block disengages from the limit hole, and the friction block rotates at a small angle. Adjacent hexagonal friction blocks abut against each other to limit the friction force, avoiding localized force concentration and further buffering the friction force. After braking, the rebound force of the reset spring can accurately push the hexagonal limit block back into the corresponding hexagonal limit hole, realizing the automatic and precise reset of the friction block. This restores multiple friction blocks to an equal gap state, which can not only smoothly discharge the friction dust accumulated in the gap, avoiding dust blockage and affecting heat dissipation, but also effectively enhance the high temperature resistance of the brake pad. At the same time, it solves the problems of friction blocks not being able to return to their original position automatically and abnormal gaps affecting dust discharge.

[0016] This invention, through the cooperation between the buffer adjustment component and the mounting plate, enables the mounting plate to perform secondary buffering and automatic reset. The force generated by the mutual contact of adjacent friction blocks is transmitted to the mounting plate, pushing it to adjust its position on the clamping plate. At this time, the sliding column slides within the adjustment groove with the rotation center of the connecting column as the reference. In conjunction with the rotational connection between the connecting column and the clamping plate, a secondary buffer is formed, further absorbing the instantaneous impact force during braking and preventing damage to the friction blocks due to the instantaneous impact force. After braking, the buffer spring in the adjustment groove uses its rebound force to reset the sliding column to its initial position, driving the mounting plate to reset synchronously. This restores the gap between the mounting plates to normal, which not only smoothly discharges friction debris from the gap, ensuring smooth heat dissipation and improving high-temperature resistance, but also allows the mounting plate to return to its initial working position. Combined with the reset state of the friction blocks, this improves the service life of the friction blocks. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall front structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the overall rear structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the flip-and-disassemble structure of the mounting plate of the present invention;

[0020] Figure 4 This is a schematic diagram of the left cross-sectional structure of a single mounting plate of the present invention;

[0021] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle;

[0022] Figure 6 This is a schematic diagram of the internal structure of multiple mounting plates and multiple disassembled gate plates of the present invention;

[0023] Figure 7This is a cross-sectional view of the brake pad and a schematic diagram of the friction block structure of the present invention;

[0024] Figure 8 This is a schematic diagram of the connection structure between the friction block and the mounting post of the present invention;

[0025] Figure 9 This is a schematic diagram of the left side structure of the clamping plate of the present invention;

[0026] Figure 10 For the present invention Figure 9 Enlarged structural diagram at point B.

[0027] In the diagram: 1. Clamping plate; 2. Mounting plate; 3. Connecting post; 41. Sliding post; 42. Adjusting groove; 43. Buffer spring; 5. Brake plate; 6. Friction block; 7. Mounting post; 8. Torsion spring; 81. Mounting groove; 91. Limiting block; 93. Limiting hole; 92. Return spring. Detailed Implementation

[0028] To further illustrate the technical means and effects adopted by the present invention in order to achieve the intended purpose, the following detailed description is provided in conjunction with the accompanying drawings and preferred embodiments, based on the specific implementation methods, structures, features and effects of the present invention.

[0029] Example 1

[0030] Please see Figures 1 to 10This invention provides a technical solution: a high-temperature resistant self-recovering railway brake pad, comprising a clamping plate 1, with connecting posts 3 rotatably mounted in multiple equally spaced circular grooves on the front side of the clamping plate 1, mounting plates 2 fixed to the front side of the connecting posts 3, buffer adjustment components provided between the mounting plates 2 and the clamping plate 1, brake pads 5 being fitted and slidably mounted in the grooves on the front side of the mounting plates 2, the mounting plates 2 being evenly spaced along the arc surface structure of the clamping plate 1, and the external structure of the mounting plates 2 corresponding to the external structure of the brake pads 5, with mounting posts 7 rotatably sliding through multiple through holes on the brake pads 5, friction blocks 6 fixed to the front end of the mounting posts 7, the friction blocks 6 being designed as polygonal structures, and multiple friction blocks 6 on each brake pad 5 being evenly spaced according to the actual area of ​​the brake pad 5, and multiple mounting grooves 81 being provided on the back of the brake pad 5. 1. The mounting post 7 is connected to multiple through holes on the brake pad 5. The annular groove on the surface of the mounting post 7 is elastically engaged with the inner wall of the mounting groove 81 by a torsion spring 8. The number of friction blocks 6 on each brake pad 5 corresponds to the number of mounting grooves 81, and the number of mounting grooves 81 corresponds to the number of mounting posts 7. The buffer adjustment assembly includes two sliding posts 41 and two adjustment grooves 42. The two sliding posts 41 are symmetrically fixed on the rear side of the mounting plate 2. The sliding posts 41 are limited and slidably disposed in the adjustment grooves 42 by two symmetrical buffer springs 43 on the outer side. The two adjustment grooves 42 are symmetrically opened on the front side of the clamping plate 1. The two sliding posts 41 are symmetrically installed on the rear side of the mounting plate 2 with the center of the connecting post 3. The opening position of the two adjustment grooves 42 on the clamping plate 1 corresponds to the position of the sliding posts 41. The outer shape of the two adjustment grooves 42 is designed as an arc structure, and the arc center of the adjustment groove 42 corresponds to the center of the connecting post 3.

[0031] When adjacent friction blocks 6 collide with each other due to their polygonal structure, the compression return spring 92 drives the mounting plate 2 to adjust its position relative to the clamping plate 1. The sliding column 41 slides in the adjustment groove 42 with the connecting column 3 as the center. The rotation of the connecting column 3 helps to buffer the friction force and further absorb the braking friction force, preventing the friction blocks 6 from being damaged by the instantaneous impact force. After braking, the buffer spring 43 drives the sliding column 41 to reset, so that the mounting plate 2 returns to its initial gap, which facilitates the discharge of friction dust, ensures smooth heat dissipation, and improves the high temperature resistance and self-recovery performance of the device.

[0032] Example 2

[0033] Based on Example 1, please refer to Figures 1 to 10A reset assembly is provided between the mounting post 7 and the mounting plate 2. The reset assembly is used to adjust the gap state of multiple friction blocks 6. The reset assembly includes a limiting hole 93, which is opened on the middle partition of the mounting plate 2. A limiting block 91 is fitted and slidably installed in the limiting hole 93. The front end of the limiting block 91 is fixedly connected to the rear end of the mounting post 7. The rear end of the limiting block 91 is connected to the inner wall of the rear side of the mounting plate 2 through a reset spring 92. The limiting block 91 is designed to be hexagonal. The structure of the limiting block 91 corresponds to the structure of the limiting hole 93. The position of the limiting hole 93 opened on the middle partition of the mounting plate 2 corresponds to the position of the corresponding limiting block 91.

[0034] Mounting plate 2, brake pad 5 and friction block 6 are sequentially mounted on clamping plate 1. Friction block 6 is mounted on brake pad 5 through mounting post 7. Mounting post 7 is clamped and positioned in mounting groove 81 on surface of brake pad 5 by torsion spring 8. In addition, limiting block 91 at one end of mounting post 7 is limited and installed with limiting hole 93 on mounting plate 2. Limiting block 91 is elastically connected to mounting plate 2 inside reset spring 92.

[0035] During braking, the high-speed rotating brake disc contacts the friction block 6. The mounting post 7 connected to the friction block 6 compresses the return spring 92 and moves backward, simultaneously causing the brake pad 5 to embed into the front groove of the mounting plate 2. The hexagonal limit block 91 simultaneously disengages from the hexagonal limit hole 93. After losing its limit, the friction block 6 is affected by the instantaneous contact friction force and rotates at a small angle on the clamping plate 1. Its polygonal structure causes adjacent friction blocks 6 to contact and limit each other. The contact friction force is buffered by the backward movement and the small-angle rotation. When braking ends and the contact friction force disappears, the rebound force of the return spring 92 pushes the limit block 91 back to the corresponding limit hole 93, realizing the reset of the friction block 6. This restores the multiple friction blocks 6 on the brake pad 5 to an equal gap state, thereby smoothly discharging the friction dust accumulated in the gap, avoiding dust accumulation from affecting heat dissipation, and ensuring the high-temperature resistance of the brake pad 5.

[0036] Working principle: When using this high-temperature resistant self-recovering railway brake pad, the mounting plate 2, brake pad 5 and friction block 6 are first installed on the clamping plate 1 in sequence. The friction block 6 is installed on the brake pad 5 through the mounting post 7. The mounting post 7 is clamped and positioned in the mounting groove 81 on the surface of the brake pad 5 by the torsion spring 8. In addition, the limiting block 91 at one end of the mounting post 7 is limited and installed by the limiting hole 93 on the mounting plate 2. The limiting block 91 is elastically connected to the mounting plate 2 inside the return spring 92.

[0037] Based on the above, when the friction block 6 contacts the brake disc and the wheel is braked, during the high-speed rotation of the brake disc, when the friction block 6 abuts against the brake disc, the mounting post 7 connected to the friction block 6 moves backward through the return spring 92, and at the same time, it moves the brake pad 5 backward and embeds it into the front groove of the mounting plate 2. During the backward movement of the friction block 6, the hexagonal limiting block 91 disengages from the hexagonal limiting hole 93. At this time, the mounting post 7 loses its hexagonal limiting fixation, and due to the friction generated by the contact, each friction block 6 will be subjected to a large instantaneous force and rotate relative to the clamp plate 1. However, since the friction block 6 is polygonal in design, adjacent friction blocks 6 abut against each other, limiting the friction block 6. In this way, the backward movement and small-angle rotation of the friction block 6 are used to buffer the friction generated by the contact.

[0038] Based on the above, when adjacent friction blocks 6 collide with each other due to their polygonal structure design, the return spring 92 is compressed and pressed against the mounting plate 2, thereby pushing the mounting plate 2 to adjust its position on the clamping plate 1. After the mounting plate 2 is subjected to the contact force, the sliding column 41 will slide inside the adjustment groove 42. The rotational connection between the connecting column 3 and the clamping plate 1 will rotate in coordination with the mounting plate 2. The movement of the sliding column 41 in the adjustment groove 42 is adjusted with the rotation center of the connecting column 3. The mounting plate 2, in coordination with the position adjustment of the friction blocks 6, further buffers the friction force generated by the contact, preventing the friction blocks 6 from being damaged by the instantaneous impact force.

[0039] Based on the above, when the positions of friction block 6 and mounting plate 2 are adjusted, the gap between friction block 6 and mounting plate 2 will change. When the frictional force between friction block 6 and brake disc disappears, the limit block 91 will be pushed back into limit hole 93 under the action of the return spring 92. Since the limit hole 93 and limit block 91 are structurally corresponding and the hexagonal structure design is used, the limit block 91 and limit hole 93 can be accurately docked and positioned. By using the accurate docking between limit block 91 and limit hole 93, friction block 6 can be accurately reset, so that multiple friction blocks 6 on brake pad 5 can automatically return to the state of equal gap. After reset, the gap is restored. Due to the smaller gap caused by buffering, the powder and debris that fall from friction block 6 in the gap can be smoothly discharged, which enhances the discharge of debris and avoids the accumulation of powder and debris between friction blocks 6 due to the inability to automatically restore the original gap, which affects heat dissipation and is not conducive to improving the high temperature resistance effect.

[0040] Based on the above, when the friction block 6 is reset, the buffer spring 43 in the adjustment groove 42 uses the rebound force to reset the slide column 41 to the initial position in the adjustment groove 42, so that the gap between the mounting plates 2 is restored. After the gap between the mounting plates 2 is restored, the powder falling into the gap between the mounting plates 2 can be smoothly discharged without affecting heat dissipation, thus improving the high temperature resistance and self-recovery effect of the device.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations based on the disclosed technical content without departing from the scope of the technical solution of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the technical solution of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A high-temperature resistant, self-recovering railway brake pad, comprising a clamping plate (1), characterized in that, Connecting posts (3) are rotatably installed in multiple equally spaced circular grooves on the front side of the clamping plate (1). Mounting plates (2) are fixed on the front side of the connecting posts (3). Buffer adjustment components are provided between the multiple mounting plates (2) and the clamping plate (1). Brake plates (5) are fitted and slidably installed in the grooves on the front side of the multiple mounting plates (2). Mounting posts (7) are rotatably slidably passed through multiple through holes on the brake plates (5). Friction blocks (6) are fixed at the front end of the mounting posts (7). Multiple mounting grooves (81) are opened on the back of the brake plates (5), and the multiple mounting grooves (81) are connected to the multiple through holes on the brake plates (5). The annular groove section on the surface of the mounting posts (7) is elastically engaged with the inner wall of the mounting grooves (81) by a torsion spring (8). A reset component is provided between the mounting posts (7) and the mounting plates (2). The reset component is used to adjust the gap state of the multiple friction blocks (6).

2. The high-temperature resistant self-recovering railway brake pad according to claim 1, characterized in that: The buffer adjustment assembly includes two sliding columns (41) and two adjustment slots (42). The two sliding columns (41) are symmetrically fixed on the rear side of the mounting plate (2). The sliding columns (41) are limited and slidably disposed in the adjustment slots (42) by two symmetrical buffer springs (43) on the outer side. The two adjustment slots (42) are symmetrically opened on the front side of the clamping plate (1).

3. The high-temperature resistant self-recovering railway brake pad according to claim 2, characterized in that: The two sliding columns (41) are symmetrically installed on the rear side of the mounting plate (2) with the center of the connecting column (3). The opening positions of the two adjustment slots (42) on the clamping plate (1) correspond to the positions of the sliding columns (41). The two adjustment slots (42) are designed with an arc-shaped structure, and the arc center of the adjustment slots (42) corresponds to the center of the connecting column (3).

4. The high-temperature resistant self-recovering railway brake pad according to claim 1, characterized in that: Multiple mounting plates (2) are distributed at equal intervals along the arc surface structure of the clamping plate (1), and the external structure of the multiple mounting plates (2) corresponds to the external structure of the brake pad (5).

5. A high-temperature resistant self-recovering railway brake pad according to claim 1, characterized in that: The friction block (6) is designed as a polygonal structure, and multiple friction blocks (6) on each brake plate (5) are distributed and arranged according to the actual area and gap of the brake plate (5).

6. A high-temperature resistant self-recovering railway brake pad according to claim 1, characterized in that: The number of friction blocks (6) on each of the brake pads (5) corresponds to the number of mounting slots (81), and the number of mounting slots (81) corresponds to the number of mounting posts (7).

7. A high-temperature resistant self-recovering railway brake pad according to claim 1, characterized in that: The reset assembly includes a limiting hole (93), which is opened on the middle partition of the mounting plate (2). A limiting block (91) is fitted and slidably installed in the limiting hole (93). The front end of the limiting block (91) is fixedly connected to the rear end of the mounting column (7). The rear end of the limiting block (91) is connected to the inner wall of the rear side of the mounting plate (2) through a reset spring (92).

8. A high-temperature resistant self-recovering railway brake pad according to claim 7, characterized in that: The limiting block (91) is designed to be hexagonal. The structure of the limiting block (91) corresponds to the structure of the limiting hole (93). The position of the limiting hole (93) opened on the middle partition of the mounting plate (2) corresponds to the position of the corresponding limiting block (91).

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