Honeycomb-bird-bionics-based motor train unit brake pad wing-shaped connecting device

Abstract

The utility model relates to the field of motor train unit braking, and discloses a hummingbird bionics-based motor train unit brake pad wing-shaped connecting device which comprises a steel backing, an adjuster and a brake pad, the steel backing is mounted on a motor train unit braking system, the adjuster penetrates through the steel backing, and the brake pad is detachably mounted and fixed at the top of the adjuster. The brake pad has the following advantages and effects that the buffer energy absorption mechanism is utilized, the brake pad in a high-speed braking state can be tightly attached to the brake disc, relative sliding between the brake pad and the brake disc is reduced, the friction effect is enhanced, the braking force of a brake is improved, impact force generated when the brake pad makes contact with the brake disc can be effectively absorbed, and the service life of the brake pad is prolonged. High-frequency vibration generated in the braking process is relieved, the position of the brake pad can be adjusted, the friction area of the brake pad can be increased through vertical and horizontal deviation of the brake pad, the service life of the brake pad is prolonged, and braking faults caused by excessive abrasion of the brake pad are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of EMU brake technology, and in particular to an EMU brake pad wing-shaped connection device based on hummingbird bionics. Background Art

[0002] At present, the adjuster and steel back of the EMU brake pad are floating structures, which directly affects the wear resistance of the brake pad during high-speed operation of the EMU train, and cannot ensure the safety of the EMU during emergency braking. Due to the insufficient fit between the brake pad and the brake disc, uneven wear occurs, which will lead to unstable and reduced braking force. At the same time, excessive friction in certain areas will cause uneven friction of the brake pad and failure to fully press the brake disc, resulting in a reduced friction area, endangering driving safety and shortening the service life of the brake pad.

[0003] Therefore, we propose a wing-shaped connection device for EMU brake pads based on hummingbird bionics to solve the above problems. Utility Model Content

[0004] The purpose of this application is to provide a wing-shaped connection device for the brake pad of an EMU based on hummingbird bionics, which has the function of allowing the brake pad to fit tightly with the brake disc in a high-speed braking state, reducing the relative sliding between the brake pad and the brake disc, enhancing the friction effect, and improving the braking force. It can also effectively absorb the impact force generated when the brake pad contacts the brake disc, and slow down the high-frequency vibration generated during the braking process. It can also adjust the position of the brake pad so that the vertical and horizontal offset of the brake pad can increase the friction area of the brake pad, extend the service life of the brake pad, and reduce the brake failure caused by excessive wear of the brake pad.

[0005] The above technical purpose of the present application is achieved through the following technical solutions: a hummingbird bionic-based EMU brake pad wing-shaped connection device, including a steel back, an adjuster and a brake pad installed on the EMU braking system, the adjuster passes through the steel back, the brake pad is detachably mounted and fixed on the top of the adjuster, and a buffer energy absorption mechanism is provided between the steel back and the adjuster, and the buffer energy absorption mechanism is used to absorb the impact force generated by the brake pad during the braking process.

[0006] The present application is further configured as follows: the adjuster includes an upper connecting part, a middle adjusting part and a lower connecting part, the upper connecting part is located above the steel back, the middle adjusting part is fixedly connected to the bottom of the upper connecting part, and the lower connecting part is fixedly connected to the bottom of the upper connecting part.

[0007] The present application is further configured as follows: an installation groove 1 is provided on the top of the steel back, a connecting hole is provided on the bottom inner wall of the installation groove 1, an installation groove 2 communicating with the connecting hole is provided at the bottom of the steel back, the bottom of the middle adjustment part extends into the installation groove 1, and the bottom end of the lower connecting part passes through the connecting hole and the installation groove 2 in sequence.

[0008] The present application is further configured as follows: the buffer energy absorption mechanism includes an upper wing-shaped spring group and a lower wing-shaped spring group, the upper wing-shaped spring group is located between the first mounting groove and the middle adjustment portion, and the lower wing-shaped spring group is located between the lower connecting portion and the second mounting groove.

[0009] The present application is further configured as follows: the upper wing-shaped spring group consists of two upper wing-shaped springs, the ends of the two upper wing-shaped springs that are away from each other are fixedly connected to the inner walls on both sides of the mounting groove, and the ends of the two upper wing-shaped springs that are close to each other are fixedly connected to the bottom of the middle adjustment part, and the two upper wing-shaped springs are symmetrically distributed.

[0010] The present application is further configured as follows: the lower wing-shaped spring group consists of two lower wing-shaped springs, the ends of the two lower wing-shaped springs that are away from each other are fixedly connected to the inner walls on both sides of the mounting groove two, an annular groove is provided on the lower connecting part, the ends of the two lower wing-shaped springs that are close to each other are fixedly connected to the inner wall of the annular groove, and the two lower wing-shaped springs are symmetrically distributed.

[0011] The present application is further configured as follows: the brake pad is fixed to the top of the upper connecting portion by means of a hexagon socket bolt threaded installation.

[0012] This application includes at least one of the following beneficial technical effects:

[0013] The present application utilizes a buffering energy-absorbing mechanism composed of an upper wing-shaped spring group and a lower wing-shaped spring group. During the braking process, the brake pad in a high-speed braking state can be closely fitted with the brake disc, reducing the relative sliding between the brake pad and the brake disc, enhancing the friction effect, and improving the braking force. It can also effectively absorb the impact force generated when the brake pad contacts the brake disc, slowing down the high-frequency vibration generated during the braking process, and can adjust the position of the brake pad so that the vertical and horizontal offset of the brake pad can increase the friction area of the brake pad, extend the service life of the brake pad, and reduce brake failures caused by excessive wear of the brake pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the main view of this embodiment.

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure of this embodiment when viewed from above.

[0016] Figure 3 It is a schematic diagram of the main cross-sectional structure of this embodiment.

[0017] In the figure, 1. Steel back; 2. Adjuster; 3. Brake pad; 4. Buffer energy absorption mechanism; 5. Mounting slot 1; 6. Connecting hole; 7. Mounting slot 2; 8. Annular groove; 9. Hexagon socket bolt; 21. Upper connecting part; 22. Middle adjusting part; 23. Lower connecting part; 41. Upper wing-shaped spring; 42. Lower wing-shaped spring. DETAILED DESCRIPTION

[0018] The technical solutions of this application will be described clearly and completely below with reference to specific embodiments. Obviously, the embodiments described are only a portion of the embodiments of this application, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of this application without creative effort are also within the scope of protection of this application.

[0019] See also Figure 1 、 Figure 2 and Figure 3 The present application provides a wing-shaped connection device for brake pads of an EMU based on hummingbird bionics, comprising a steel back 1, an adjuster 2 and a brake pad 3 installed on the EMU braking system. The adjuster 2 passes through the steel back 1. The adjuster 2 comprises an upper connection part 21, an intermediate adjustment part 22 and a lower connection part 23. The upper connection part 21 is located above the steel back 1, the intermediate adjustment part 22 is fixedly connected to the bottom of the upper connection part 21, and the lower connection part 23 is fixedly connected to the bottom of the upper connection part 21. The top of the steel back 1 is provided with a mounting groove 5, and the bottom inner wall of the mounting groove 5 is provided with a connecting hole 6. The bottom of the steel back 1 is provided with a connecting hole 6. The bottom of the middle adjustment part 22 extends into the mounting groove 1 5, and the bottom end of the lower connecting part 23 passes through the communicating hole 6 and the mounting groove 2 7 in sequence. The brake pad 3 is detachably installed and fixed on the top of the adjuster 2. A buffering energy-absorbing mechanism 4 is provided between the steel back 1 and the adjuster 2. The buffering energy-absorbing mechanism 4 is used to absorb the impact force generated by the brake pad 3 during the braking process. When the brake pad 3 contacts the brake disc for braking, it can effectively absorb the impact force generated when the brake pad contacts the brake disc, thereby avoiding damage to the components of the braking system due to excessive impact force and extending the service life of the entire braking system.

[0020] In this embodiment, the above-mentioned buffer energy absorption mechanism 4 includes an upper wing-shaped spring group and a lower wing-shaped spring group. The upper wing-shaped spring group is located between the mounting groove 1 5 and the middle adjustment part 22, and the lower wing-shaped spring group is located between the lower connecting part 23 and the mounting groove 2 7. The buffering effect achieved by the cooperation of the upper wing-shaped spring group and the lower wing-shaped spring group makes the braking process smoother, and can avoid unstable conditions such as vehicle shaking caused by excessive impact force at the moment of braking, which is beneficial to maintaining the safety of vehicle operation. Among them, the upper wing-shaped spring group consists of two upper wing-shaped springs 41, and the ends of the two upper wing-shaped springs 41 away from each other are fixedly connected to the inner walls of both sides of the mounting groove 1 5 respectively, and the ends of the two upper wing-shaped springs 41 close to each other are fixedly connected to the bottom of the middle adjustment part 22, and the two upper wing-shaped springs 41 are symmetrically distributed, and the lower wing-shaped spring group consists of two lower wing-shaped springs 42, and the two lower wing-shaped springs 42 away from each other. One end is fixedly connected to the inner walls of both sides of the mounting groove 7 respectively, and an annular groove 8 is opened on the lower connecting part 23. The ends of the two lower wing-shaped springs 42 close to each other are fixedly connected to the inner wall of the annular groove 8, and the two lower wing-shaped springs 42 are symmetrically distributed, and the two upper wing-shaped springs 41 and the two lower wing-shaped springs 42 are symmetrically distributed. When absorbing impact force, the force can be evenly distributed in all directions to avoid damage to a component due to excessive local force, further enhancing the reliability and stability of the entire connecting device. It should be noted that the upper wing-shaped spring 41 and the lower wing-shaped spring 42 adopt a hummingbird bionic design, which draws on the excellent characteristics of natural organisms. This design concept may make the upper wing-shaped spring 41 and the lower wing-shaped spring 42 more optimized in structure and performance, and can better adapt to the complex mechanical environment during braking, improve the buffering energy absorption effect and the working performance of the entire device.

[0021] In this embodiment, it should be noted that, through the elastic characteristics of the upper wing-shaped spring 41 and the lower wing-shaped spring 42, the brake pad 3 can be moved in the vertical direction to a maximum of 0.55 mm and have a maximum horizontal deflection angle of 0.97 degrees, which is used to solve the problem of loose fit between the brake pad 3 and the brake disc, reduce the relative sliding between the brake pad and the brake disc, thereby enhancing the friction effect and improving the braking force. In addition, the vertical and horizontal offsets can increase the friction area of the brake pad 3 and extend its service life.

[0022] In this embodiment, the brake pad 3 is threadedly fixed to the top of the upper connecting part 21 by the hexagon socket bolt 9. The brake pad 3 is threadedly fixed to the top of the upper connecting part 21 by the hexagon socket bolt 9. This detachable installation method allows the brake pad 3 to be replaced conveniently and quickly after it is worn to a certain extent, without the need for large-scale disassembly of the entire braking system, thereby improving maintenance efficiency and ensuring the continuity of the braking performance of the EMU.

[0023] Through the above structure, the working principle of the hummingbird bionic-based EMU brake pad wing-shaped connection device provided in this application is as follows:

[0024] When the brake pad 3 contacts the brake disc during the braking process, the two symmetrically distributed upper wing-shaped springs 41 and two lower wing-shaped springs 42 can make the brake pad 3 in a high-speed braking state fit tightly with the brake disc, reducing the relative sliding between the brake pad 3 and the brake disc, enhancing the friction effect, and improving the braking force. It can also effectively absorb the impact force generated when the brake pad contacts the brake disc, and slow down the high-frequency vibration generated during the braking process. Moreover, through the elastic characteristics of the upper wing-shaped spring 41 and the lower wing-shaped spring 42 themselves, the position of the brake pad 3 can be adjusted, so that the vertical and horizontal offsets of the brake pad 3 can increase the friction area of the brake pad 3, extend the service life of the brake pad 3, and reduce brake failures caused by excessive wear of the brake pad 3.

Claims

1. A wing-shaped connection device for brake pads of EMU based on hummingbird bionics, characterized in that: The invention comprises a steel back (1), an adjuster (2) and a brake pad (3) installed on a motor vehicle braking system, wherein the adjuster (2) passes through the steel back (1), the brake pad (3) is detachably mounted and fixed on the top of the adjuster (2), and a buffer energy absorption mechanism (4) is provided between the steel back (1) and the adjuster (2), and the buffer energy absorption mechanism (4) is used to absorb the impact force generated by the brake pad (3) during the braking process.

2. The hummingbird-inspired EMU brake pad wing-shaped connection device according to claim 1 is characterized in that: The adjuster (2) comprises an upper connecting portion (21), an intermediate adjusting portion (22) and a lower connecting portion (23); the upper connecting portion (21) is located above the steel back (1); the intermediate adjusting portion (22) is fixedly connected to the bottom of the upper connecting portion (21); and the lower connecting portion (23) is fixedly connected to the bottom of the upper connecting portion (21).

3. The hummingbird-inspired EMU brake pad wing-shaped connection device according to claim 2 is characterized in that: The top of the steel back (1) is provided with a mounting groove 1 (5), the bottom inner wall of the mounting groove 1 (5) is provided with a connecting hole (6), the bottom of the steel back (1) is provided with a mounting groove 2 (7) communicating with the connecting hole (6), the bottom of the middle adjustment portion (22) extends into the mounting groove 1 (5), and the bottom end of the lower connecting portion (23) passes through the connecting hole (6) and the mounting groove 2 (7) in sequence.

4. The hummingbird-inspired EMU brake pad wing-shaped connection device according to claim 3 is characterized in that: The buffer energy absorption mechanism (4) comprises an upper wing-shaped spring group and a lower wing-shaped spring group, wherein the upper wing-shaped spring group is located between the first mounting groove (5) and the middle adjustment portion (22), and the lower wing-shaped spring group is located between the lower connecting portion (23) and the second mounting groove (7).

5. The hummingbird-inspired EMU brake pad wing-shaped connection device according to claim 4 is characterized in that: The upper wing-shaped spring group comprises two upper wing-shaped springs (41), the ends of the two upper wing-shaped springs (41) that are away from each other are fixedly connected to the inner walls of the two sides of the mounting groove (5), and the ends of the two upper wing-shaped springs (41) that are close to each other are fixedly connected to the bottom of the middle adjustment part (22), and the two upper wing-shaped springs (41) are symmetrically distributed.

6. The hummingbird-inspired EMU brake pad wing-shaped connection device according to claim 4, characterized in that: The lower wing-shaped spring group comprises two lower wing-shaped springs (42), the ends of the two lower wing-shaped springs (42) that are away from each other are fixedly connected to the inner walls of both sides of the second mounting groove (7), the lower connecting portion (23) is provided with an annular groove (8), the ends of the two lower wing-shaped springs (42) that are close to each other are fixedly connected to the inner wall of the annular groove (8), and the two lower wing-shaped springs (42) are symmetrically distributed.

7. The hummingbird-inspired EMU brake pad wing-shaped connection device according to claim 2, characterized in that: The brake pad (3) is threadedly mounted and fixed to the top of the upper connecting portion (21) via a hexagon socket bolt (9).

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