A high-speed train anti-eccentric wear brake pad

Abstract

The present invention belongs to the technical field of brake equipment, and discloses a high-speed train anti-bias wear brake pad, including a back plate and a plurality of friction blocks, the plurality of friction blocks are arranged on the back plate, a plurality of plug holes are provided on the back plate, a plurality of foot posts are provided on one side of each friction block, and the gap of each foot post is inserted into the plug hole, an elastic member is provided between the back plate and the friction block, and a limiting member is connected to the end of each foot post away from the friction block, and the limiting member abuts against the back plate under the pressure of the elastic member, and each friction block is provided with a plurality of protrusions and a plurality of depressions along the cross-sectional edge parallel to the friction surface, and the plurality of protrusions and the plurality of depressions are staggered, and the plurality of protrusions and the plurality of depressions are transitioned in a circular arc, and are arranged in a wave shape. The present invention improves the heat dissipation effect through the protrusions and depressions on the friction blocks, reduces heat accumulation and local overheating, and at the same time improves the braking performance and service life by increasing the contact area and improving the self-cleaning function, optimizes the stress distribution, and enhances the overall reliability and safety of the braking system.

Description

Technical Field

[0001] The invention belongs to the technical field of brake equipment, and in particular relates to an anti-eccentric wear brake pad for high-speed trains. Background Art

[0002] The braking system is one of the key systems for high-speed train safety and emergency response, which directly affects the operational safety of the train and the comfort of passengers. As one of the nine core technologies for the development of high-speed trains, the performance of the braking system is crucial, and the brake pad is an indispensable and important part of the braking system.

[0003] At present, the designs of brake pad friction blocks are mainly hexagonal, triangular and circular. These friction blocks are easily affected by uneven temperature and thermal stress cycles during braking, resulting in "hot spots" in local areas of the friction surface, causing thermal fatigue damage and ultimately causing eccentric wear of the brake pad. This eccentric wear not only affects the braking effect, but may also cause safety hazards to the system.

[0004] The Chinese patent document with publication number CN219673149U discloses a long hexagonal brake pad for high-speed railway EMUs, which uses long hexagonal friction blocks arranged in a 2.5:3.5:3 manner, and a positioning block with a limit plate is fixed on the brake pad mounting plate. Although the eccentric wear problem of the inner ring is improved, there is still stress concentration at the sharp corners of the long hexagonal friction block, which easily aggravates the wear of the friction block.

[0005] The Chinese patent document with publication number CN109240280A discloses a brake pad that prevents eccentric wear. The center of gravity of the friction block is optimized to coincide with the horizontal projection of the axis of the longitudinal rod to ensure uniform force; the friction blocks are arranged symmetrically to further balance the force; the friction block group is arranged in a triangle to stabilize the center of gravity; an elastic support is introduced to apply biasing force to ensure that the friction block is close to the brake disc, thereby optimizing the force of the brake pad and extending the service life of the brake pad. However, the center of gravity and symmetrical arrangement of the friction assembly need to be precisely controlled, and the manufacturing process is complex and costly.

[0006] The Chinese patent document with publication number CN111396474A discloses a high-speed train brake pad with optimized friction particle combination and installation method. It adopts the combination optimization of polygonal and circular friction particles, takes advantage of the advantages of particles of different shapes, ensures braking reliability and safety, and has vibration reduction and noise reduction effects; uses non-cylindrical guide shafts and matching mounting holes to prevent particles from rotating; introduces damping support pads and thermal insulation layers to reduce vibration and thermal effects and extend the service life of the brake pad. However, it has high requirements for the coordination between the various components of the high-speed train braking system, especially in the coordination of force and wear of friction particles of different shapes.

[0007] Although these existing technical solutions have their own innovations, they still have various deficiencies in practical applications and are difficult to completely solve the problems of brake pad eccentric wear and thermal fatigue. Therefore, it is necessary to develop a new and efficient brake pad design to improve the braking performance and safety of high-speed trains. Summary of the invention

[0008] The invention provides a high-speed train anti-eccentric wear brake pad to solve the existing technical problems.

[0009] In order to solve the above technical problems, the technical solution proposed by the present invention is:

[0010] A high-speed train anti-bias wear brake pad comprises a back plate and a plurality of friction blocks, wherein the plurality of friction blocks are arranged on the back plate, a plurality of insertion holes are provided on the back plate, a plurality of foot posts are provided on one side of each of the friction blocks, and a gap between each of the foot posts is inserted into the insertion hole, an elastic member is provided between the back plate and the friction block, a limiting member is connected to one end of each of the foot posts away from the friction block, and the limiting member abuts against the back plate under the pressure of the elastic member, and each of the friction blocks is provided with a plurality of protrusions and a plurality of depressions along a cross-sectional edge parallel to a friction surface, the plurality of protrusions and the plurality of depressions are staggered, and the plurality of protrusions and the plurality of depressions have arc transitions and are arranged in a wave shape.

[0011] As a further improvement of the above technical solution:

[0012] Each of the friction blocks is provided with a plurality of heat dissipation and chip collection holes perpendicular to the friction surface, and the axis of each of the heat dissipation and chip collection holes coincides with the axis of the foot column.

[0013] The elastic member is a pressure spring, which is arranged in the insertion hole and sleeved on the foot column. One end of the pressure spring abuts against the step in the insertion hole, and the other end abuts against one side of the friction block.

[0014] The back plate comprises a mounting plate and a pressure-bearing plate, and the pressure-bearing plate is located at a side close to the friction block.

[0015] The limiting member is connected to one end of each of the foot posts away from the friction block and abuts against the mounting plate under the pressure of the elastic member.

[0016] The mounting plate is provided with a mounting protrusion, which extends along the length direction of the mounting plate and has two ends that are forked in a Y shape.

[0017] Each of the jacks comprises a guide hole and a mounting hole, wherein the guide hole is arranged on the mounting plate, and the mounting hole is arranged on the pressure plate, the inner diameter of the guide hole is smaller than the inner diameter of the mounting hole, and the pressure spring abuts against the step between the guide hole and the mounting hole.

[0018] The outer diameter of the guide hole is larger than the outer diameter of the foot column, and the outer diameter of the guide hole is smaller than the outer diameter of the pressure spring.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. Reduce eccentric wear: The friction block is inserted into the socket on the back plate through the gap between the legs, and the floating connection and uniform force of the friction block are achieved through the combination of elastic parts and limit parts, which can effectively reduce the eccentric wear of the friction block and improve the stability and reliability of the braking system.

[0021] 2. Improve heat distribution: The floating connection design enables the friction block to adaptively fine-tune its position during operation, reducing the high-temperature "hot spots" phenomenon in local areas, improving heat distribution, and reducing thermal fatigue damage, thereby extending the service life of the brake pad.

[0022] 3. Simplified manufacturing process: Compared with the complex design that requires precise control of the center of gravity position of the friction component, this embodiment achieves floating connection and uniform force of the friction block through a simple structural design, simplifies the manufacturing process and reduces production costs.

[0023] 4. Easy maintenance: Each friction block is connected by plug-in connection of the foot column and the socket, combined with the fixing method of the elastic part and the limit part, which makes the disassembly and replacement of the friction block more convenient and facilitates daily maintenance and repair.

[0024] 5. Improve braking performance: The elastic parts provide buffering and vibration absorption between the friction block and the back plate, which can reduce the vibration and noise generated during braking, and further improve the performance of the braking system and ride comfort.

[0025] 6. The convex and concave design on the friction block of the present invention effectively improves the heat dissipation effect, reduces heat accumulation and local overheating, and at the same time improves the braking performance and service life by increasing the contact area and improving the self-cleaning function. This design also optimizes the stress distribution and enhances the overall reliability and safety of the braking system.

[0026] The present invention effectively solves the problems of eccentric wear of the friction block, thermal fatigue damage, etc. through innovative structural design, simplifies the manufacturing process and maintenance process, and improves the overall performance and reliability of the brake system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a schematic diagram of the cross-sectional structure of the anti-eccentric wear brake pad of a high-speed train.

[0029] Figure 2 yes Figure 1 A partial enlarged view of .

[0030] Figure 3 It is a schematic diagram of the three-dimensional structure of the anti-eccentric wear brake pad of a high-speed train.

[0031] Figure 4 It is a structural diagram of the mounting plate.

[0032] Figure 5 It is a structural schematic diagram of the pressure plate.

[0033] Figure 6 This is a schematic diagram of the friction block structure. Figure 1 .

[0034] Figure 7 This is a schematic diagram of the friction block structure. Figure 2 .

[0035] Legend:

[0036] 1. Back plate; 11. Mounting plate; 111. Mounting protrusion; 12. Pressure plate; 2. Friction block; 21. Foot column; 22. Protrusion; 23. Depression; 24. Heat dissipation and chip collection hole; 3. Plug hole; 31. Guide hole; 32. Mounting hole; 33. Step; 4. Limiting piece; 5. Pressure spring. DETAILED DESCRIPTION

[0037] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively and meticulously below in conjunction with the accompanying drawings and preferred embodiments of the present invention, but the protection scope of the present invention is not limited to the following specific embodiments.

[0038] Unless otherwise defined, all professional terms used below have the same meanings as those generally understood by those skilled in the art. The professional terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the scope of protection of the present invention.

[0039] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present invention can be purchased from the market or prepared by existing methods.

[0040] Example: Figure 1-Figure 7As shown, the high-speed train anti-eccentric wear brake pad of this embodiment includes a back plate 1 and a plurality of friction blocks 2, wherein the plurality of friction blocks 2 are arranged on the back plate 1, and a plurality of insertion holes 3 are provided on the back plate 1. A plurality of foot posts 21 are provided on one side of each friction block 2, and each foot post 21 is inserted into the insertion hole 3 with a gap. An elastic member is provided between the back plate 1 and the friction block 2, and one end of each foot post 21 away from the friction block 2 is connected to a limiting member 4, and the limiting member 4 abuts against the back plate 1 under the pressure of the elastic member. The friction block 2 is inserted into the insertion hole 3 on the back plate 1 through the gap of the foot post 21, and the combination of the elastic member and the limiting member 4 realizes the floating connection and uniform force of the friction block 2, which can effectively reduce the eccentric wear phenomenon of the friction block 2 and improve the stability and reliability of the braking system. The floating connection design enables the friction block 2 to fine-tune its position adaptively during operation, reduce the high temperature "hot spot" phenomenon in the local area, improve the heat distribution, reduce the thermal fatigue damage, and thus extend the service life of the brake pad. Compared with the complex design that requires precise control of the center of gravity position of the friction component, this embodiment achieves the floating connection and uniform force of the friction block 2 through a simple structural design, simplifies the manufacturing process, and reduces production costs. Each friction block 2 is connected by plug-in connection through the foot 21 and the socket 3, combined with the fixing method of the elastic member and the limit member 4, so that the disassembly and replacement of the friction block 2 is more convenient, which is convenient for daily maintenance and inspection. The elastic member provides a buffering and vibration absorption effect between the friction block 2 and the back plate 1, which can reduce the vibration and noise generated during the braking process, and further improve the performance of the braking system and ride comfort. In summary, the high-speed train anti-bias wear brake pad of this embodiment effectively solves the problems of eccentric wear and thermal fatigue damage of the friction block 2 through an innovative structural design, while simplifying the manufacturing process and maintenance process, and improving the overall performance and reliability of the braking system.

[0041] In this embodiment, each friction block 2 is provided with six protrusions 22 and six recesses 23 along the cross-sectional edge parallel to the friction surface. This design can enhance the heat dissipation effect of the friction block 2, reduce heat accumulation, and further prevent local overheating of the friction block 2 through the staggered arrangement of the protrusions 22 and recesses 23. At the same time, the structure of the protrusions 22 and recesses 23 helps to capture and discharge wear debris, keep the friction surface clean, and improve the braking effect and the service life of the friction block 2.

[0042] In this embodiment, the six protrusions 22 and the six recesses 23 are arranged alternately, and the six protrusions 22 and the six recesses 23 are arranged in a wave shape. The plum blossom design formed by the six protrusions 22 and the six recesses 23 increases the surface area of ​​the friction block 2, which helps to dissipate heat more effectively during braking. The combination of the protrusions 22 and the recesses 23 can form an air flow channel, promote the circulation of cooling air, improve thermal management performance, and reduce thermal fatigue; the shape and arrangement of the protrusions 22 and the recesses 23 can help disperse the stress on the friction block 2, reduce local stress concentration, and reduce the wear of the friction block 2 in high stress areas. This helps to extend the service life of the friction block 2 and improve the durability of the overall system; the combined design of the protrusions 22 and the recesses 23 can increase the contact area between the friction block 2 and the brake disc during braking, thereby increasing the braking force. Especially in emergency braking situations, this design can provide better grip and braking effect; the structure of the protrusions 22 and recesses 23 helps to scrape and remove impurities and wear debris on the surface of the friction block 2 during braking, reduce contamination of the brake disc, keep the friction surface clean, and further improve braking efficiency. In general, the design of the protrusions 22 and recesses 23 on the friction block 2 not only improves the heat dissipation effect and stress distribution, but also improves the braking performance and self-cleaning function, providing higher reliability and safety for the high-speed train braking system.

[0043] In this embodiment, each friction block 2 is provided with four heat dissipation and chip collection holes 24 perpendicular to the friction surface, and the axis of each heat dissipation and chip collection hole 24 coincides with the axis of the foot column 21. The provision of the heat dissipation and chip collection holes 24 increases the surface area of ​​the friction block 2, and the distribution of the holes allows air to circulate more effectively, thereby promoting the dissipation of heat. This helps to reduce the heat accumulation generated by the friction block 2 during high-intensity braking, and prevent overheating and thermal fatigue. These heat dissipation and chip collection holes 24 are designed not only to dissipate heat, but also to collect tiny particles and impurities generated by the wear of the friction block 2 during the braking process. By effectively collecting and removing wear debris, the friction surface can be kept clean, the change in the friction coefficient can be reduced, and stable braking performance can be maintained. The position of the heat dissipation and chip collection holes 24 coincides with the axis of the foot column 21. This precise alignment helps to keep the overall structure of the friction block 2 evenly stressed, reduce local stress concentration, and further extend the service life of the friction block 2. This design helps to simplify the manufacturing process of the friction block 2, because the alignment of the heat dissipation and chip collection holes 24 and the foot column 21 can be completed at one time during the processing process. In addition, the installation and maintenance process of the friction block 2 is simplified, and the production efficiency and maintenance convenience are improved. In general, the design of the heat dissipation and chip collection holes 24 provides important technical guarantees for the reliability and durability of the high-speed train braking system by improving heat dissipation efficiency, effectively collecting wear chips, optimizing stress distribution, and simplifying manufacturing and installation.

[0044] In this embodiment, the radii of the depression 23 are R3.51 and R4.65 respectively, and the radius of the protrusion 22 is R3.70. The overall size of the friction block 2 is a maximum width of 23.85 mm and a minimum width of 20 mm. There are four heat dissipation and chip collection holes 24 in the center, and the horizontal and vertical distances between the heat dissipation and chip collection holes 24 are both 20 mm. The diameter of each heat dissipation and chip collection hole 24 is 5 mm. The total thickness of the friction block 2 is 22 mm and the total height is 49.83 mm. The diameter of the foot column 21 is 8 mm and the length is 14 mm.

[0045] In this embodiment, the elastic member is a pressure spring 5, which is arranged in the insertion hole 3 and sleeved on the foot column 21. One end of the pressure spring 5 abuts against the step 33 in the insertion hole 3, and the other end abuts against one side of the friction block 2. This design effectively absorbs and disperses the uneven pressure generated during the braking process through the elastic effect of the pressure spring 5, ensures the stability and uniform force of the friction block 2, and reduces the eccentric wear phenomenon. At the same time, the arrangement of the pressure spring 5 enhances the close fit between the friction block 2 and the back plate 1, and improves the reliability and durability of the braking system.

[0046] In this embodiment, the back plate 1 includes a mounting plate 11 and a pressure plate 12, and the pressure plate 12 is located on a side close to the friction block 2. The setting of the pressure plate 12 enhances the overall structural strength of the back plate 1. The pressure plate 12 directly contacts the friction block 2, which can effectively disperse and bear the pressure generated by the friction block 2 during the braking process, and prevent the back plate 1 from being deformed or damaged. The pressure plate 12 is arranged on a side close to the friction block 2, so that the braking force can be more effectively transmitted to the friction block 2. This design reduces the loss in the force transmission process and ensures that the braking system responds more quickly and accurately. The pressure plate 12 provides a more uniform force-bearing surface, so that the friction block 2 is uniformly stressed during operation, reducing the local stress concentration phenomenon. This helps to extend the service life of the friction block 2 and reduce maintenance costs. The layered design of the mounting plate 11 and the pressure plate 12 makes it more convenient to maintain and replace the friction block 2. The pressure plate 12 can be inspected and replaced as an independent component without disassembling the entire back plate 1 structure, thereby improving maintenance efficiency. The setting of the pressure plate 12 not only helps to dissipate heat, but also reduces the impact of thermal stress on the back plate 1. The heat generated by the friction block 2 during operation can be conducted away more quickly through the pressure plate 12, preventing heat accumulation and improving the safety and stability of the braking system. In summary, the design of the mounting plate 11 and the pressure plate 12 in the back plate 1 combines the advantages of strength, conduction efficiency, durability and ease of maintenance, providing a higher performance guarantee for the anti-bias wear brake pads of high-speed trains.

[0047] In this embodiment, one end of each leg 21 away from the friction block 2 is located on the side of the mounting plate 11 away from the pressure plate 12 and is connected to the limiting member 4. The limiting member 4 is connected to the end of each leg 21 away from the friction block 2 and abuts against the mounting plate 11 under the pressure of the elastic member. Such a design enables the limiting member 4 to be tightly pressed against the mounting plate 11 under the pressure of the pressure spring 5, thereby ensuring that the friction block 2 remains stable and positioned during operation. In this way, the friction block 2 can be effectively prevented from shifting or loosening during braking, further improving the stability and safety of the braking system, reducing eccentric wear, and extending the service life of the brake pad.

[0048] In this embodiment, a mounting protrusion 111 is provided on the mounting plate 11. The mounting protrusion 111 extends along the length direction of the mounting plate 11 and has two ends that are Y-shaped and bifurcated. The double Y-shaped mounting protrusion 111 is designed on the mounting plate 11 to fix the brake pad. The double Y-shaped mounting protrusion 111 adopts a longitudinal inverted triangle design with an inclination angle of 43°, which helps to ensure that the braking pressure is evenly distributed between the friction block 2 and the brake disc. The design of the mounting protrusion 111 provides an additional fixing point, making the positioning of the friction block 2 on the mounting plate 11 more stable, reducing the looseness or displacement that may occur during the braking process. This Y-shaped bifurcated structure provides a stronger mechanical locking effect at both ends, effectively preventing the friction block 2 from slipping or falling off. The Y-shaped bifurcated structure can evenly distribute the force from the friction block 2 to the mounting plate 11, reduce local stress concentration, and reduce performance degradation caused by excessive wear. This design ensures the uniformity of force during braking and improves the durability of the entire braking system. The design of the mounting protrusion 111 simplifies the installation and removal process of the friction block 2, especially the Y-shaped fork provides a clear installation direction and positioning, making the maintenance and replacement of the friction block 2 more convenient and quick, saving time and labor costs. The mounting protrusion 111 not only enhances the fixation of the friction block 2, but also provides additional surface area, which helps to dissipate heat during braking. The Y-shaped fork structure can promote air circulation, further improve the efficiency of heat dissipation, and reduce heat accumulation between the friction block 2 and the mounting plate 11. Overall, the design of the mounting protrusion 111 provides higher safety and performance guarantees for the high-speed train braking system by improving the stability of the friction block 2, optimizing the force distribution, facilitating maintenance and improving thermal management.

[0049] In this embodiment, the mounting protrusion 111 is a dovetail. The dovetail design provides a stronger mechanical locking effect. Its unique shape makes the connection between the friction block 2 and the mounting plate 11 tighter, effectively preventing sliding or loosening caused by vibration or external force. This connection method is particularly suitable for high-stress application scenarios in high-speed train braking systems. The structural characteristics of the dovetail make it show excellent stability when subjected to shear force. This design can effectively disperse the shear force applied to the connection, reduce local stress concentration, and thus extend the service life of the friction block 2 and the mounting plate 11. The dovetail design not only enhances the fixation, but also simplifies the installation and removal process of the friction block 2. When maintaining and replacing the friction block 2, the dovetail provides a clear installation path and positioning, making the operation easier and faster, saving time and labor costs. The dovetail design can ensure the high consistency and accuracy of the connecting parts during the manufacturing process. This not only improves the product quality, but also reduces the problems caused by inconsistent parts during the assembly process. The dovetail connection not only has practical functions, but also has certain aesthetic value. Its tightly combined appearance makes the design of the entire braking system more compact and coordinated. At the same time, the reliability of this design can ensure stable performance and long service life under the high-intensity use conditions of high-speed trains. In summary, the dovetail design of the mounting protrusion 111 provides a higher connection strength, shear resistance, installation convenience and structural aesthetics for the high-speed train anti-bias wear brake pad, significantly improving the reliability and durability of the system.

[0050] In this embodiment, each jack 3 includes a guide hole 31 and a mounting hole 32. The guide hole 31 is provided on the mounting plate 11, and the mounting hole 32 is provided on the pressure plate 12. The inner diameter of the guide hole 31 is smaller than the inner diameter of the mounting hole 32, and the pressure spring 5 abuts against the step 33 between the guide hole 31 and the mounting hole 32. The inner diameter of the guide hole 31 is smaller than the inner diameter of the mounting hole 32, forming a stepped transition. Such a design forms a step 33 through the guide holes 31 and the mounting holes 32 with different inner diameters, provides stable support and positioning for the pressure spring 5, effectively limits the moving range of the pressure spring 5, and ensures that the spring can play the best elastic role during the braking process. This not only helps to evenly disperse the pressure and reduce the eccentric wear of the friction block 2, but also improves the stability and durability of the braking system.

[0051] In this embodiment, the outer diameter of the guide hole 31 is larger than the outer diameter of the foot column 21, and the outer diameter of the guide hole 31 is smaller than the outer diameter of the pressure spring 5. This design ensures that the foot column 21 can be smoothly inserted into the guide hole 31 by making the outer diameter of the guide hole 31 between the outer diameters of the foot column 21 and the pressure spring 5, while providing appropriate support and restriction for the pressure spring 5. This design can effectively prevent the pressure spring 5 from lateral displacement during operation, ensure that the friction block 2 is evenly stressed during braking, reduce eccentric wear, and extend the service life of the brake pad.

[0052] In this embodiment, the mounting protrusion 111 is a dovetail. The dovetail design provides a stronger mechanical locking effect. Its unique shape makes the connection between the friction block 2 and the mounting plate 11 tighter, effectively preventing sliding or loosening caused by vibration or external force. This connection method is particularly suitable for high-stress application scenarios in high-speed train braking systems. The structural characteristics of the dovetail make it show excellent stability when subjected to shear force. This design can effectively disperse the shear force applied to the connection, reduce local stress concentration, and thus extend the service life of the friction block 2 and the mounting plate 11. The dovetail design not only enhances the fixation, but also simplifies the installation and removal process of the friction block 2. When maintaining and replacing the friction block 2, the dovetail provides a clear installation path and positioning, making the operation easier and faster, saving time and labor costs. The dovetail design can ensure the high consistency and accuracy of the connecting parts during the manufacturing process. This not only improves the product quality, but also reduces the problems caused by inconsistent parts during the assembly process. The dovetail connection not only has practical functions, but also has certain aesthetic value. Its tightly combined appearance makes the design of the entire braking system more compact and coordinated. At the same time, the reliability of this design can ensure stable performance and long service life under the high-intensity use conditions of high-speed trains. In summary, the dovetail design of the mounting protrusion 111 provides a higher connection strength, shear resistance, installation convenience and structural aesthetics for the high-speed train anti-bias wear brake pad, significantly improving the reliability and durability of the system.

[0053] In this embodiment, the stopper 4 is a nut. The nut serves as the stopper 4 to ensure that the distal end of the foot column 21 remains fixed to the mounting plate 11 and provides a stable connection under the pressure of the pressure spring 5. The use of the nut provides a reliable mechanical lock to prevent the friction block 2 from moving or loosening due to the influence of the braking force during the braking process, thereby ensuring the stable position of the friction block 2 and the overall stability of the system.

Claims

1. A high-speed train anti-bias wear brake pad, comprising a back plate (1) and a plurality of friction blocks (2), wherein the plurality of friction blocks (2) are arranged on the back plate (1). It is characterized in that The back plate (1) is provided with a plurality of insertion holes (3), and a plurality of foot posts (21) are provided on one side of each friction block (2), and each foot post (21) is inserted into the insertion hole (3) with a gap. An elastic member is provided between the back plate (1) and the friction block (2), and an end of each foot post (21) away from the friction block (2) is connected to a limiting member (4), and the limiting member (4) abuts against the back plate (1) under the pressure of the elastic member. Each friction block (2) is provided with a plurality of protrusions (22) and a plurality of recesses (23) along a cross-sectional edge parallel to the friction surface, and the plurality of protrusions (22) and the plurality of recesses (23) are arranged alternately, and the plurality of protrusions (22) and the plurality of recesses (23) are arranged alternately. The depressions (23) have arc transitions and are arranged in a wave shape. Each of the friction blocks (2) is provided with a plurality of heat dissipation and chip collection holes (24) perpendicular to the friction surface. The axis of each of the heat dissipation and chip collection holes (24) coincides with the axis of the foot column (21). The elastic member is a pressure spring (5). The pressure spring (5) is arranged in the insertion hole (3) and is sleeved on the foot column (21). One end of the pressure spring (5) abuts against a step (33) in the insertion hole (3), and the other end abuts against one side of the friction block (2). The back plate (1) comprises a mounting plate (11) and a pressure plate (12). The pressure plate (12) is located on a side close to the friction block (2).

2. The high-speed train anti-eccentric wear brake pad according to claim 1, It is characterized in that The limiting member (4) is connected to one end of each foot column (21) away from the friction block (2), and abuts against the mounting plate (11) under the pressure of the elastic member.

3. The high-speed train anti-eccentric wear brake pad according to claim 2, It is characterized in that The mounting plate (11) is provided with a mounting protrusion (111), the mounting protrusion (111) extending along the length direction of the mounting plate (11) and having two ends that are forked in a Y shape.

4. The high-speed train anti-eccentric wear brake pad according to claim 3, It is characterized in that Each of the jacks (3) comprises a guide hole (31) and a mounting hole (32); the guide hole (31) is arranged on the mounting plate (11); the mounting hole (32) is arranged on the pressure plate (12); the inner diameter of the guide hole (31) is smaller than the inner diameter of the mounting hole (32); and the pressure spring (5) abuts against a step (33) between the guide hole (31) and the mounting hole (32).

5. The high-speed train anti-eccentric wear brake pad according to claim 4, It is characterized in that The outer diameter of the guide hole (31) is greater than the outer diameter of the foot column (21), and the outer diameter of the guide hole (31) is smaller than the outer diameter of the pressure-bearing spring (5).

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