CN216951417U

CN216951417U - Floating type motor train unit brake pad

Info

Publication number: CN216951417U
Application number: CN202220006193.1U
Authority: CN
Inventors: 不公告发明人
Original assignee: Shanghai Lianzong Rail Transit Technology Co ltd
Current assignee: Shanghai Lianzong Rail Transit Technology Co ltd
Priority date: 2022-01-05
Filing date: 2022-01-05
Publication date: 2022-07-12
Anticipated expiration: 2032-01-05

Abstract

The utility model provides a floating type motor train unit brake pad, belonging to the technical field of manufacturing; the utility model includes: a steel backing and a plurality of friction blocks; the steel backing is provided with a plurality of mounting grooves, and a mounting hole is formed in the center of each mounting groove; the friction block is provided with a back plate, and the shaft pin is arranged on the back plate; the friction block is inserted into the mounting hole through the shaft pin so as to be mounted in the mounting groove; the bottom of the back plate shaft pin is provided with a circular truncated cone, and the top surface of the circular truncated cone is a conical contact surface; and a disc spring is sleeved on the shaft pin, and the back plate enables the disc spring to tightly press the bottom of the mounting groove so as to enable the disc spring to be in contact with the conical contact surface. According to the utility model, the conical contact surface on the shaft pin of the back plate is in surface contact with the disc spring, so that the risk of scratching the surface of the back plate by the sharp edge of the disc spring is eliminated, the elastic floating between the friction block and the steel backing is ensured, and the excessive abrasion to the back plate can be effectively avoided.

Description

Floating type motor train unit brake pad

Technical Field

The utility model relates to a brake pad manufacturing technology, in particular to a floating type motor train unit brake pad, and belongs to the technical field of brake pad manufacturing production.

Background

The brake pad is used as a key safety piece for the execution of the brake system, and the effective friction area of the brake pad and the brake disc surface determines the braking efficiency of the train. When braking, whether a plurality of friction bodies on the brake pad can be correctly and effectively attached to the disc surface or not continuously provides braking force, and the safety running and parking braking of the train are guaranteed.

The brake pad has machining errors in the manufacturing process, and after all friction bodies are assembled, the friction surfaces are not necessarily in the same plane. When braking, the friction body is pressed on the brake disc and is jointed with the brake disc by the elastic element arranged between the steel back and the back plate, thereby achieving good braking efficiency.

Among the prior art is a floating disc brake pad, include: a steel back, a plurality of friction bodies, a plurality of adjusting spring plates and a plurality of positioning snap springs; the pin penetrates through the spring sheet groove to be fixedly connected with the positioning clamp spring, and the friction bodies are tightly connected and assembled on the steel back to form an elastic floating structure. The adjusting spring is generally a disc spring.

The direct unsteady form that holds in the palm the backplate sphere of top of dish spring, the hardness of dish spring is far above the backplate, at high frequency braking in-process, the continuous scraping backplate surface in dish spring hole edge, after the damage of long-time relapse, the backplate surface can form the recess, make the backplate sphere float along the reason beat on the dish spring with the function that dish spring held in the palm all inefficacy, lead to the brake lining to appear the clamping stagnation of floating mechanism, the wearing and tearing inconsistent, the eccentric wear scheduling problem, reduce the brake performance of brake lining and shorten the life of brake lining.

Therefore, it is a technical problem to be solved by those skilled in the art to develop a brake pad capable of eliminating the risk of scratching the surface of the backplate by the sharp edge of the disc spring, and having good braking performance and long service life.

SUMMERY OF THE UTILITY MODEL

The utility model provides a novel floating type brake pad for a motor train unit, which not only keeps the effective operation of a floating mechanism, but also solves the technical problem of back plate abrasion in the prior art by adopting the elastic design of a disc spring and a conical contact surface between a friction block and the back plate.

The utility model discloses a floating type motor train unit brake pad, which comprises: a steel backing and a plurality of friction blocks; the steel backing is provided with a plurality of mounting grooves, and a mounting hole is formed in the center of each mounting groove;

the friction block is provided with a back plate, and the shaft pin is arranged on the back plate; the friction block is inserted into the mounting hole through the shaft pin so as to be mounted in the mounting groove;

and a disk spring is sleeved on the shaft pin, and the back plate enables the disk spring to tightly press the bottom of the mounting groove.

The floating type motor train unit brake pad is characterized in that the friction blocks are divided into a plurality of groups, and each group at least comprises one friction block; gaps are reserved between each group of friction blocks and the adjacent group of friction blocks;

each friction block in the group is independently stopped; the back plate is provided with a plurality of anti-rotation pins, and the steel back is also provided with limiting holes for butting the anti-rotation pins.

The floating type motor train unit brake pad is characterized in that the bottom of the shaft pin is provided with a circular truncated cone which is used for being in contact with the belleville spring, and the top of the circular truncated cone is a conical contact surface.

The floating type motor train unit brake pad is characterized in that two surfaces of the disc spring are both concave conical surfaces, and the conical surfaces of the disc spring are in contact with the conical contact surfaces.

The floating type motor train unit brake pad is characterized in that the friction block is a square friction block, and four corners of the friction block are initially provided with round corners.

The floating type motor train unit brake pad is characterized in that the number of the anti-rotation pins is four, and the four anti-rotation pins are respectively positioned at four corners of the back plate.

The floating type motor train unit brake pad is characterized in that the top end of the shaft pin is provided with an annular clamping groove, and a spring buckle is arranged on the annular clamping groove; the friction block is installed on the installation hole through the spring buckle.

The floating type motor train unit brake pad is characterized in that the steel backing is provided with two symmetrically arranged steel backs, and each steel back is provided with 9 friction blocks; the friction blocks on each steel backing are divided into three groups, and the number of each group is 3.

The floating type brake pad for the motor train unit is characterized in that the width of the gap between the adjacent groups of friction blocks is 5-15 mm.

According to the floating type motor train unit brake pad, the conical contact surface on the back plate is in surface contact with the disc spring, and the risk that the sharp edge of the disc spring scratches the surface of the back plate is eliminated through the surface-to-surface contact; the self-adaptive adjustment of the elastic floating of the friction body can be realized by utilizing the elastic deformation of the disc spring, so that the friction body is attached to the surface of the brake disc, the effective friction area of the brake pad is ensured, and the braking efficiency is improved.

Drawings

FIG. 1 is an overall schematic view of a floating type motor train unit brake pad according to an embodiment of the utility model;

FIG. 2 is a schematic steel backing diagram of a floating type motor train unit brake pad according to an embodiment of the utility model;

FIG. 3 is an overall cross-sectional view of the brake pad of the floating type motor train unit according to the embodiment of the utility model;

FIG. 4 is a schematic diagram of the friction block after the floating type motor train unit brake pad is disassembled according to the embodiment of the utility model.

Detailed Description

The structure of the floating type motor train unit brake pad is mainly applied to the brake pad for the motor train unit train.

The floating EMUs brake lining of this embodiment includes: a steel back 1 and a plurality of friction blocks 2; a plurality of mounting grooves are formed in the steel back 1, and a mounting hole 10 is formed in the center of each mounting groove.

One side of the steel backing 1 is a mounting surface, and the other side is provided with a dovetail plate; the dovetail plate is used to mount the entire brake pad on the brake apparatus. In addition, the steel backing and the dovetail plate are of an integrated metal structure. The integrated metal structure of the steel back and the dovetail plate has higher reliability than a riveting structure or a welding structure.

As shown in fig. 4, the friction block 2 has a back plate 20, and the shaft pin 21 is disposed on the back plate 20; the friction block 2 is inserted into the mounting hole 10 through the shaft pin 21 to be mounted in the mounting groove; the mounting groove is a sunken groove for receiving and fixing the back plate 20 of the friction block.

As shown in fig. 3, a disk spring 3 is sleeved on the shaft pin 21, and the back plate 20 presses the disk spring 3 against the bottom of the mounting groove.

According to the floating type brake pad for the motor train unit, the friction blocks 2 are divided into a plurality of groups, and each group at least comprises one friction block 2; gaps are reserved between each group of friction blocks 2 and the adjacent group of friction blocks 2; preferably, the width of the gap between the friction blocks of adjacent groups is 5-15 mm.

As shown in FIG. 1, each friction block in the group is independently stopped rotating, and a gap of 1-2mm is reserved between adjacent friction blocks; the back plate 20 is provided with a plurality of anti-rotation pins 25, and the steel backing 1 is further provided with limiting holes 11 for butting the anti-rotation pins 25. The limiting hole 11 can prevent the friction block from rotating.

In general, the steel back 1 has two symmetrically arranged blocks, and each steel back 1 is provided with 9 friction blocks; the friction blocks on each steel backing 1 are divided into three groups, and the number of each group is 3.

3 one set of fan-shaped arrangements of 18 friction bodies form 7 chip removal, ventilation passageways in big clearance, and the brake disc face is thrown away under the effect of centrifugal force and wind after the abrasive dust leaves the friction interface, effectively prevents because of abrasive dust, stereoplasm granule and ice and snow mix with the abrasive grain wearing and the bonding wearing that leads to.

In this embodiment, a circular truncated cone 23 for contacting with the belleville spring 3 is disposed at the bottom of the shaft pin 21, and a top of the circular truncated cone 23 is a tapered contact surface.

Further, two surfaces of the disc spring 3 are both concave conical surfaces, and the conical surfaces of the disc spring 3 are in contact with the conical contact surfaces.

Through the cooperation of the conical contact surface on the back plate and the double-conical-surface disc spring, the risk of scratching the surface of the back plate by the sharp edge of the disc spring is eliminated through surface-to-surface contact, so that the back plate is not scratched by the disc spring. The self-adaptive adjustment of the elastic floating of the friction body is realized by utilizing the elastic deformation of the disc spring, so that the friction body is attached to the surface of the brake disc, the effective friction area of the brake pad is ensured, and the braking efficiency is improved.

In this embodiment, the friction block 2 is a square friction block, and the edge of the friction block 2 has a round angle.

Preferably, the rotation-preventing pins 25 have four corners, which are located at four corners of the back plate 20.

In the floating type brake pad for the motor train unit, the top end of the shaft pin 21 is provided with an annular clamping groove, and a spring buckle 22 is installed on the annular clamping groove; the friction block 2 is mounted on the mounting hole 10 through the spring catch 22.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments. Through the above description of the embodiments, those skilled in the art can clearly understand that the method of the above embodiment can be implemented by some variations and the necessary general technical superposition; of course, the method can also be realized by simplifying some important technical features in the upper level. Based on such understanding, the technical solution of the present invention essentially or contributing to the prior art is: integral structures and incorporating the methods described in the various embodiments of the present invention.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a floating EMUs brake lining which characterized in that includes: a steel backing and a plurality of friction blocks; the steel backing is provided with a plurality of mounting grooves, and a mounting hole is formed in the center of each mounting groove;

a back plate is arranged on the friction block, and a shaft pin is arranged on the back plate; the friction block is inserted into the mounting hole through the shaft pin, a disc spring is sleeved on the shaft pin, the back plate enables the disc spring to tightly press the bottom of the mounting groove, and the friction block is mounted on the steel back.

2. The floating multiple unit brake pad of claim 1, wherein the friction blocks are divided into a plurality of groups, each group including at least one of the friction blocks; gaps are reserved between each group of friction blocks and the adjacent group of friction blocks;

each friction block in the group is independently stopped rotating, and a gap of 1-2mm is reserved between adjacent friction blocks; the back plate is provided with a plurality of anti-rotation pins, and the steel back is also provided with limiting holes for butting the anti-rotation pins.

3. The floating type motor train unit brake pad as claimed in claim 1, wherein the bottom of the shaft pin is provided with a truncated cone for contacting with the belleville spring, and the top of the truncated cone is a conical contact surface.

4. The floating multiple unit brake pad according to claim 3, wherein both surfaces of the disc spring are concave conical surfaces, and the conical surfaces of the disc spring are in contact with the conical contact surface.

5. The floating multiple unit brake pad of claim 2, wherein the friction block is a square friction block with rounded corners.

6. The floating type motor train unit brake pad as claimed in claim 5, wherein the rotation preventing pins are four, and are located at four corners of the back plate.

7. The floating type motor train unit brake pad according to any one of claims 1 to 3, wherein the top end of the shaft pin is provided with a ring-shaped slot, and the ring-shaped slot is provided with a spring buckle; the friction block is mounted on the mounting hole through the spring buckle.

8. The floating type motor train unit brake pad as claimed in claim 2, wherein the steel backing has two symmetrically arranged blocks, each block having 9 friction blocks mounted thereon; the friction blocks on each steel backing are divided into three groups, and the number of each group is 3.

9. The floating multiple unit brake pad according to claim 8, characterized in that the gap width between adjacent sets of friction blocks is 5-15 mm.