Railway vehicle brake lining capable of suppressing brake noise during braking

Abstract

The brake lining for the railway vehicle comprises a back plate used for being connected with the vehicle, a first groove is formed in the side wall of the back plate, a friction plate made of non-asbestos organic materials is fixedly connected to the side wall of the back plate, the corners of the friction plate are subjected to chamfering treatment, and the first groove is formed in the side wall of the back plate. Scale marks are fixedly connected to the side wall of the friction plate, a cross-shaped groove is formed in the friction plate, the friction plate is arranged, the friction plate is made of non-asbestos organic materials, the friction coefficient of the non-asbestos organic materials is low, aggressiveness to a brake disc is smaller, braking noise can be remarkably reduced, and the service life of the brake disc is prolonged. The friction plate is subjected to straight chamfering treatment, the noise performance under the cold-state working condition can be improved, the cross-shaped groove is formed in the upper end of the friction plate, and the braking noise can be further reduced by increasing the heat dissipation area of the friction face and improving the stability of the friction film through the design of the cross-shaped groove.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of brake lining, specifically to railway vehicle brake lining capable of restraining brake noise during braking. BACKGROUND

[0002] Noise generated during braking of railway vehicles is an important consideration, especially in urban environments. Brake linings use a special friction material that has a low coefficient of friction and stable friction performance, which can reduce noise generated by friction during braking. The structure of the brake lining is specially designed to disperse and reduce stress during braking, thereby reducing noise generated by stress concentration. Brake linings have good lubricity to reduce direct contact and friction between brake components, thereby reducing noise generation. Good wear resistance not only ensures the service life of the brake lining, but also ensures that its noise suppression effect does not decrease during long-term use. During braking, brake linings are affected by high temperatures, so their thermal stability is also an important consideration. Brake linings with good thermal stability can maintain good performance, including noise suppression ability, at high temperatures.

[0003] The existing device has the problem of excessive noise of train brake lining during use, which is a common drawback. It mainly manifests as high-frequency screeching noise or low-frequency "moan" noise during braking. These noises not only affect the comfort of railway passengers, but also cause noise pollution. Excessive noise of brake linings is usually accompanied by unstable vibration inside the braking system. This vibration can cause accelerated wear of key components such as brake discs, brake calipers, and linings, and even cause component fatigue damage, affecting the overall reliability of the braking system. Therefore, we need to propose a railway vehicle brake lining capable of restraining brake noise during braking. SUMMARY

[0004] The utility model discloses a railway vehicle brake lining capable of restraining brake noise during braking. The friction plate is made of non-asbestos organic material, which has a lower friction coefficient and is less aggressive to the brake disc, significantly reducing brake noise. The friction plate has a straight chamfer, which can improve noise performance under cold working conditions. The upper end of the friction plate is provided with a cross-shaped groove, which can increase the heat dissipation area of the friction surface and improve the stability of the friction film, further reducing brake noise to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] The utility model provides a railway vehicle brake pad capable of inhibiting brake noise during braking, comprising a back plate for connecting with a vehicle, a first groove is arranged on the side wall of the back plate, a friction plate made of non-asbestos organic material is fixedly connected on the side wall of the back plate, the corners of the friction plate are chamfered, a scale line is fixedly connected on the side wall of the friction plate, a cross groove is arranged in the interior of the friction plate, a second groove is arranged on the side wall of the friction plate, two symmetrically distributed threaded holes are arranged on the side wall of the back plate, and a fixing bolt is threadedly connected in the interior of the two threaded holes.

[0007] Preferably, two mounting holes symmetrically distributed are arranged on the side wall of the back plate, and a pin is arranged in the interior of the two mounting holes.

[0008] Preferably, a first rubber plate is in contact with the side wall of the back plate, and two first through holes symmetrically distributed are arranged in the interior of the first rubber plate.

[0009] Preferably, a steel plate is in contact with the side wall of the first rubber plate, and two second through holes symmetrically distributed are arranged in the interior of the steel plate.

[0010] Preferably, a second rubber plate is in contact with the side wall of the steel plate, and two third through holes symmetrically distributed are arranged in the interior of the second rubber plate.

[0011] Preferably, the two pins are slidably connected with the two first through holes, the two second through holes and the two third through holes respectively.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The utility model discloses a friction plate made of non-asbestos organic material, and the friction coefficient of the non-asbestos organic material is relatively low, the attack on the brake disc is smaller, brake noise can be significantly reduced, the straight chamfering treatment of the friction plate can improve the noise performance under cold state conditions, the upper end of the friction plate is provided with a cross groove, the cross-shaped groove design can increase the heat dissipation area of the friction surface and improve the stability of the friction film, and brake noise is further reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is one of the structural schematic diagram of the utility model;

[0015] Figure 2 It is the second structural schematic diagram of the utility model;

[0016] Figure 3 It is the local structural schematic diagram of the utility model;

[0017] Figure 4 It is the expanded structural schematic diagram of the local structure of the utility model.

[0018] In the figure: 1, back plate; 2, first groove; 3, friction plate; 4, scale line; 5, cross slot; 6, second groove; 7, threaded hole; 8, fixing bolt; 9, mounting hole; 10, pin; 11, first rubber plate; 12, first through hole; 13, steel plate; 14, second through hole; 15, second rubber plate; 16, third through hole. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0020] Please refer to Figures 1-4 The utility model provides a technical scheme:

[0021] A railway vehicle brake pad capable of inhibiting brake noise during braking, comprising a back plate 1 for connecting with a vehicle, a first groove 2 is arranged on the side wall of the back plate 1, a friction plate 3 made of non-asbestos organic material is fixedly connected to the side wall of the back plate 1, the corners of the friction plate 3 are chamfered, a scale line 4 is fixedly connected to the side wall of the friction plate 3, a cross slot 5 is arranged in the friction plate 3, a second groove 6 is arranged on the side wall of the friction plate 3, two symmetrically distributed threaded holes 7 are arranged on the side wall of the back plate 1, and a fixing bolt 8 is threadedly connected to the inside of each threaded hole 7.

[0022] Exemplarily, the friction plate 3 is made of non-asbestos organic material, the friction coefficient of the non-asbestos organic material is relatively low, the attack on the brake disc is smaller, brake noise can be significantly reduced, the straight chamfering of the friction plate 3 can improve the noise performance under cold working conditions, the upper end of the friction plate 3 is provided with the cross slot 5, the cross-shaped groove design can increase the heat dissipation area of the friction surface and improve the stability of the friction film, further reducing brake noise, the first groove 2 and the second groove 6 are used to reduce the weight of the back plate 1 and the friction plate 3, and the scale line 4 is convenient for reminding maintenance personnel to replace the back plate 1 and the friction plate 3.

[0023] Two symmetrically distributed mounting holes 9 are arranged on the side wall of the back plate 1, and a pin 10 is arranged in the inside of each mounting hole 9.

[0024] Exemplarily, the mounting hole 9 is used for mounting the pin 10.

[0025] The side wall of the back plate 1 is in contact with a first rubber plate 11, the inside of the first rubber plate 11 is provided with two first through holes 12 which are symmetrically distributed, the side wall of the first rubber plate 11 is in contact with a steel plate 13, the inside of the steel plate 13 is provided with two second through holes 14 which are symmetrically distributed, the side wall of the steel plate 13 is in contact with a second rubber plate 15, the inside of the second rubber plate 15 is provided with two third through holes 16 which are symmetrically distributed, and the two pin nails 10 are slidably connected with the two first through holes 12, the two second through holes 14 and the two third through holes 16 respectively.

[0026] Exemplarily, the second rubber plate 15 provides good damping characteristics and absorbs high-frequency vibration, the steel plate 13 increases structural rigidity and simultaneously isolates the outer rubber to prevent performance degradation under high temperature or harsh environment, the first rubber plate 11 further enhances the damping effect and ensures the stability of the overall structure, the multilayer rubber structure (sandwich design of rubber-steel plate-rubber) effectively absorbs vibration energy by increasing the damping ratio of the system, converts mechanical energy into heat energy, thereby reducing high-frequency vibration and noise during braking, and the pin nail 10 fixes the first rubber plate 11, the steel plate 13 and the second rubber plate 15 through the first through hole 12, the second through hole 14 and the third through hole 16.

[0027] Working principle: when the utility model is used, the friction plate 3 is made of non-asbestos organic material, the friction coefficient of the non-asbestos organic material is relatively low, the attack on the brake disc is smaller, and the brake noise can be significantly reduced, the friction plate 3 is straightly chamfered, the noise performance under cold working conditions can be improved, the upper end of the friction plate 3 is provided with a cross groove 5, the cross-shaped groove design can increase the heat dissipation area of the friction surface and improve the stability of the friction film, further reducing the brake noise, the first groove 2 and the second groove 6 are used to reduce the weight of the back plate 1 and the friction plate 3, and the scale line 4 facilitates reminding maintenance personnel to replace the back plate 1 and the friction plate 3.

[0028] Exemplarily, the second rubber plate 15 provides good damping characteristics and absorbs high-frequency vibration, the steel plate 13 increases structural rigidity and simultaneously isolates the outer rubber to prevent performance degradation under high temperature or harsh environment, the first rubber plate 11 further enhances the damping effect and ensures the stability of the overall structure, the multilayer rubber structure (sandwich design of rubber-steel plate-rubber) effectively absorbs vibration energy by increasing the damping ratio of the system, converts mechanical energy into heat energy, thereby reducing high-frequency vibration and noise during braking, and the pin nail 10 fixes the first rubber plate 11, the steel plate 13 and the second rubber plate 15 through the first through hole 12, the second through hole 14 and the third through hole 16.

[0029] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A railway vehicle brake pad capable of suppressing brake noise during braking, comprising a back plate (1) for connection to a vehicle, characterized in that: The side wall of the back plate (1) is provided with a first groove (2), the side wall of the back plate (1) is fixedly connected with a friction plate (3) made of non-asbestos organic material, the corners of the friction plate (3) are chamfered, the side wall of the friction plate (3) is fixedly connected with a scale line (4), the inside of the friction plate (3) is provided with a cross groove (5), the side wall of the friction plate (3) is provided with a second groove (6), and the side wall of the back plate (1) is provided with two symmetrically distributed threaded holes (7), the inside of the two threaded holes (7) is threadedly connected with a fixing bolt (8).

2. The railway vehicle brake pad capable of suppressing brake noise during braking according to claim 1, characterized by: The side wall of the back plate (1) is provided with two symmetrically distributed mounting holes (9), and the inside of the two mounting holes (9) is provided with a pin (10).

3. The railway vehicle brake pad capable of suppressing brake noise during braking according to claim 2, characterized by: The side wall of the back plate (1) is in contact with a first rubber plate (11), and the inside of the first rubber plate (11) is provided with two symmetrically distributed first through holes (12).

4. The railway vehicle brake pad capable of suppressing brake noise during braking according to claim 3, characterized by: The side wall of the first rubber plate (11) is in contact with a steel plate (13), and the inside of the steel plate (13) is provided with two symmetrically distributed second through holes (14).

5. The railway vehicle brake pad capable of suppressing brake noise during braking according to claim 4, characterized by: The side wall of the steel plate (13) is in contact with a second rubber plate (15), and the inside of the second rubber plate (15) is provided with two symmetrically distributed third through holes (16).

6. The railway vehicle brake pad capable of suppressing brake noise during braking according to claim 2, characterized by: The two pins (10) are respectively connected with the two first through holes (12), the two second through holes (14) and the two third through holes (16) in a sliding mode.

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