CN214698918U - Train brake pad - Google Patents
Train brake pad Download PDFInfo
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- CN214698918U CN214698918U CN202120751126.8U CN202120751126U CN214698918U CN 214698918 U CN214698918 U CN 214698918U CN 202120751126 U CN202120751126 U CN 202120751126U CN 214698918 U CN214698918 U CN 214698918U
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- friction block
- brake pad
- boss
- train brake
- friction
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Abstract
The utility model provides a train brake pad, belonging to the manufacturing technical field; the utility model discloses a: a steel backing and a plurality of friction blocks; one side of the steel back is a mounting surface, and the other side is provided with a dovetail plate; the mounting surface is provided with a plurality of circular bosses, and the middle of each boss is provided with a mounting hole; each friction block is arranged on the steel back through a boss; the friction block is provided with a back plate, a spherical groove is arranged on the back plate, and a shaft pin is also arranged in the spherical groove; the friction block is rotatably arranged on the boss through the spherical groove, and the friction block passes through the mounting hole through a shaft pin and is arranged on the steel back; the center of the spherical groove is provided with a concave spherical surface, the boss is provided with a convex spherical surface, and the concave spherical surface is arranged on the convex spherical surface and can rotate relative to the convex spherical surface. The brake pad of the utility model can effectively reduce the eccentric wear of the friction block when used for train braking; and after the friction block is abraded to the limit, the friction block is convenient to disassemble and replace.
Description
Technical Field
The utility model relates to a brake block manufacturing technology especially relates to a train brake block, belongs to powder metallurgy brake block and makes production technical field.
Background
In the prior art, the dovetail and the steel backing of the powder metallurgy brake pad for the 160-250km motor train unit vehicle at the speed per hour are mostly in split type structures and are connected together by adopting a riveting process or a welding process; the connection of the brake friction block and the steel backing also adopts a riveting process. The process is complex, and the brake friction block is inconvenient to disassemble after the abrasion reaches the limit. The brake pad in the connection mode has the potential risk of rivet or welding seam breakage failure, and the dovetail plate and the steel backing are easily peeled off and fall off in the running process of the train, so that potential safety hazards are caused to the train.
Generally, the friction block is generally installed on the steel back by adopting two positioning pins, and the positioning pins and the back plate are easy to lose fatigue and lose; in addition, the positioning pin is arranged at a vertex position of the triangular back plate, belongs to offset installation, and is easy to fall off due to the fact that the friction block can be subjected to large impact vibration due to uneven stress in the long-term driving process.
In the prior art, the brake pad is easy to generate eccentric wear because the friction block and the steel backing cannot be rotationally adjusted in the using process.
Therefore, the technical problem to be solved by technical personnel in the field is to develop a brake pad which can effectively reduce eccentric wear of a friction block and is convenient to mount and dismount the friction block.
SUMMERY OF THE UTILITY MODEL
The utility model provides a new train brake pad through adopting rotatable design between clutch blocks and steel backing to not only convenient to detach and installation can also effectively reduce the technical problem that clutch blocks ground partially among the prior art.
The utility model provides a train brake pad, include: a steel backing and a plurality of friction blocks; one side of the steel back is a mounting surface, and the other side of the steel back is provided with a dovetail plate;
the mounting surface is provided with a plurality of circular bosses, and the middle of each boss is provided with a mounting hole; each friction block is arranged on the steel back through the boss;
the friction block is provided with a back plate, a spherical groove is arranged on the back plate, and a shaft pin is also arranged in the spherical groove; the friction block is rotatably arranged on the boss through the spherical groove, and the friction block is arranged on the steel back through the shaft pin penetrating through the mounting hole;
the center department of sphere recess is provided with concave sphere, be provided with convex sphere on the boss, concave sphere installs on the convex sphere and can be relative the convex sphere rotates.
The train brake pad, wherein the friction block is in a regular polygon structure; the mounting surface is provided with a plurality of limiting bosses, and each limiting boss abuts against the side edge of the friction block.
The train brake pad as described above, wherein the friction block is of a regular triangle-like structure.
The train brake pad is characterized in that the limiting boss is a strip-shaped bulge, and the limiting boss abuts against the edge of the back plate.
The train brake pad is characterized in that the side surface fit clearance between the limiting boss and the friction block is 0.3-1.5 mm.
The train 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 mounted on the mounting hole through the spring buckle.
The train brake pad is characterized in that each steel back is provided with two symmetrically arranged steel backs, and each steel back is provided with 8, 10 or 12 friction blocks.
The train brake pad as described above, wherein the friction block further has a friction body; the back plate is provided with a plurality of cross-shaped auxiliary combination grooves, and the friction body is sintered on the back plate through the auxiliary combination grooves.
The train brake pad as described above, wherein the steel backing and the dovetail plate are of a one-piece metal structure.
In the brake pad of the utility model, the surface of the friction block can be well contacted with the brake disc when the train is braked and used, and the friction block is arranged on the convex spherical surface through the concave spherical surface on the spherical groove and can rotate relative to the convex spherical surface on the steel backing, thereby effectively reducing the eccentric wear of the friction block; and after the friction block is abraded to the limit, the friction block is convenient to disassemble and replace.
Drawings
Fig. 1 is an overall schematic view of a train brake pad according to an embodiment of the present invention;
fig. 2 is a schematic back view of a train brake pad according to an embodiment of the present invention;
FIG. 3 is a schematic view of a disassembled steel backing of a train brake pad according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a disassembled friction block of a train brake pad according to an embodiment of the present invention;
fig. 5 is a schematic partial cross-sectional view of a train brake pad according to an embodiment of the present invention;
fig. 6 is a back schematic view of a back plate of a train brake pad according to an embodiment of the present invention.
Detailed Description
The structure of the train brake pad of the utility model is mainly applied to the braking of the railway train with the speed per hour of 160 plus 250 kilometers.
As shown in fig. 1 and fig. 2, the train brake pad of the embodiment of the present invention includes: a steel back 1 and a plurality of friction blocks 2; one side of the steel back 1 is a mounting surface, and the other side is provided with a dovetail plate 19; the dovetail plate 19 serves to mount the entire brake pad on the brake device (caliper).
A plurality of circular spherical bosses 3 are arranged on the mounting surface, and mounting holes 30 are arranged in the middles of the bosses 3; the mounting hole 30 is a through hole and can penetrate through the steel back 1. Each friction block 2 is arranged on the steel backing 1 through the boss 3; the friction block 2 serves to increase the friction force, thereby achieving a deceleration effect.
The friction block 2 is provided with a back plate 21, a spherical groove 5 is arranged on the back plate 21, and a shaft pin 4 is further arranged in the spherical groove 5; the friction block 2 is rotatably arranged on the boss 3 through the spherical groove 5, and the friction block 2 is arranged on the steel backing 1 through the shaft pin 4 penetrating through the mounting hole 30.
In general, as shown in fig. 1, each steel back of this embodiment has two symmetrically arranged steel backs, and each steel back is provided with 8, 10 or 12 friction blocks.
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.
What is particularly important is that a concave spherical surface is arranged at the center of the spherical groove 5, a convex spherical surface is arranged on the boss 3, and the concave spherical surface is arranged on the convex spherical surface and can rotate relative to the convex spherical surface.
In the brake pad of the utility model, the surface of the friction block can be well contacted with the brake disc when the train is braked and used, and the friction block is arranged on the convex spherical surface through the concave spherical surface on the spherical groove and can rotate relative to the convex spherical surface on the steel backing, thereby effectively reducing the eccentric wear of the friction block; and after the friction block is abraded to the limit, the friction block is convenient to disassemble and replace.
In the train brake pad of the present embodiment, as shown in fig. 1 and 3, the friction block 2 has a regular polygon structure; the mounting surface is provided with a plurality of limiting bosses 12, and each limiting boss 12 abuts against the side edge of the friction block 2.
Further, the friction block 2 is of a regular triangle-like structure. In actual use, triangular and square structures are preferably adopted according to the service time and the replacement frequency of the friction block 2.
In general, the fit clearance between the limit boss 12 and the side surface of the friction block 2 is 0.3-1.5 mm. The limit boss 12 is generally in a strip shape, and one side of the strip shape abuts against the edge of the friction block 2, so that the friction block is prevented from rotating spontaneously. The friction block 2 is restricted by the limiting boss 12 and cannot rotate greatly; the rotation stopping structure has higher reliability than the rotation stopping of the split pin or the pin shaft.
In practical cases, the limiting boss 12 is a strip-shaped protrusion, and the limiting boss 12 abuts against the edge of the back plate 21.
Because the concave spherical surface can be adjusted in a self-adaptive relative rotation manner on the convex spherical surface of the steel back, the surface of the friction block 2 can be well contacted with a brake disc, and the eccentric wear phenomenon of the friction block 2 can be effectively reduced. Through use verification, the eccentric wear amount generated by the friction block 2 is less than or equal to 1.0 mm; the eccentric wear of the brake pad in the prior art is 1.5-4.0 mm.
In the train brake pad of the present embodiment, as shown in fig. 5, an annular groove 40 is disposed at the top end of the shaft pin 4, and a spring buckle 41 is installed on the annular groove 40; the friction block 2 is snap-fitted to the mounting hole 30 by the spring. The spring catch 41 ensures that the axle pin does not disengage from the mounting hole, thereby mounting the friction block.
The train brake pad of the embodiment, wherein the friction block 2 further has a friction body 22; the back plate 21 is provided with a plurality of cross-shaped coupling grooves 210, and the friction body 22 is sintered on the back plate 21 through the coupling grooves 210.
In another embodiment of the present invention, the difference between the present embodiment and the above embodiments is only that the friction blocks are 8, the spring fasteners are 8, and the dovetail-free side plane of the steel back is provided with 8 bosses. The steel back is divided into a left steel back and a right steel back, 8 limit bosses are arranged on the left steel back and the right steel back, and the matching clearance between the limit bosses and the side part of the back plate is 0.5 mm; the depth of the auxiliary combination groove is 0.8 mm.
The left steel back and the left dovetail plate are integrated metal structures formed by machining after forging; the right steel backing and the right dovetail plate are integrated metal structures formed by machining after forging.
The rest is the same as the above embodiment.
In another embodiment of the present invention, the difference between the present embodiment and the above embodiments is only that the friction blocks are 12, the spring fasteners are 12, and the dovetail-free side plane of the steel back is provided with 12 bosses. The steel back is divided into a left steel back and a right steel back, 12 limit bosses are arranged on the left steel back and the right steel back, and the matching clearance between the limit bosses and the side part of the back plate is 0.3 mm; the depth of the auxiliary combination groove is 0.3 mm.
The rest is the same as the above embodiment.
In another embodiment of the utility model, the fit clearance between the limit boss and the side part of the back plate is 1.5 mm; the depth of the auxiliary combination groove is 0.6 mm.
The rest is the same as the above embodiment.
In another embodiment of the utility model, the fit clearance between the limiting boss and the side part of the back plate is 0.8 mm; the depth of the auxiliary combination groove is 0.6 mm.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) the utility model discloses concave spherical surface on the brake lining backplate can be adjusted from suitable ground relative rotation on the convex spherical surface of steel backing, can make clutch blocks surface and brake disc well contact, can reduce the phenomenon that the clutch blocks produced the eccentric wear effectively.
(2) The rectangular limiting lug boss is arranged on the steel back of the brake pad, and the friction block is restrained by the limiting lug boss and can not rotate greatly in the braking use process of the train; the rotation stopping structure has higher reliability than the rotation stopping of the split pin or the pin shaft.
(3) The steel back and the dovetail plate of the brake pad of the utility model are of an integrated metal structure; the integrated metal structure design of the steel back and the dovetail plate is higher in reliability than the riveting structure or the welding structure design.
(4) A shaft pin is arranged at the central position of the back plate, and the spring buckle clamps an annular clamping groove of the shaft pin; the stress point of the spring buckle is positioned at the gravity center position of the friction block, and the spring buckle is uniformly stressed and is not easy to fall off in comparison with offset installation, so that the reliability is high. In addition, the friction block is more convenient to disassemble than a riveting structure after being worn to the limit.
The above embodiment numbers of the present invention are only for description, and do not represent the advantages and disadvantages of the embodiments. Through the above description of the embodiments, those skilled in the art will clearly understand that the above embodiment method can be implemented by some modifications plus the necessary general technical overlap; 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 the part contributing to the prior art is: overall structure, and cooperate the utility model discloses each embodiment the structure.
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; although the present invention has been described in detail with reference to the foregoing embodiments, it should 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; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (9)
1. A train brake pad, comprising: a steel backing and a plurality of friction blocks; one side of the steel back is a mounting surface, and the other side of the steel back is provided with a dovetail plate;
the mounting surface is provided with a plurality of circular bosses, and the middle of each boss is provided with a mounting hole; each friction block is arranged on the steel back through the boss;
the friction block is provided with a back plate, a spherical groove is arranged on the back plate, and a shaft pin is also arranged in the spherical groove; the friction block is rotatably arranged on the boss through the spherical groove, and the friction block is arranged on the steel back through the shaft pin penetrating through the mounting hole;
the center department of sphere recess is provided with concave sphere, be provided with convex sphere on the boss, concave sphere installs on the convex sphere and can be relative the convex sphere rotates.
2. The train brake pad of claim 1, wherein the friction block is a regular polygon structure; the mounting surface is provided with a plurality of limiting bosses, and each limiting boss abuts against the side edge of the friction block.
3. The train brake pad of claim 1, wherein the friction block is a regular triangle-like structure.
4. The train brake pad of claim 2, wherein the limiting boss is an elongated protrusion, and the limiting boss abuts against the edge of the back plate.
5. The train brake pad of claim 2, wherein the side fit clearance of the limit boss and the friction block is 0.3-1.5 mm.
6. The train brake pad according to any one of claims 1 to 3, wherein the top end of the axle 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.
7. The train brake pad according to any one of claims 1 to 3, wherein each steel backing has two symmetrically disposed blocks, and 8, 10 or 12 friction blocks are mounted on each steel backing.
8. The train brake pad of any one of claims 1-3, wherein the friction block further comprises a friction body; the back plate is provided with a plurality of cross-shaped auxiliary combination grooves, and the friction body is sintered on the back plate through the auxiliary combination grooves.
9. The train brake pad of any one of claims 1-3, wherein the steel backing and the dovetail plate are of unitary metal construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120751126.8U CN214698918U (en) | 2021-04-13 | 2021-04-13 | Train brake pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120751126.8U CN214698918U (en) | 2021-04-13 | 2021-04-13 | Train brake pad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214698918U true CN214698918U (en) | 2021-11-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120751126.8U Active CN214698918U (en) | 2021-04-13 | 2021-04-13 | Train brake pad |
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| Country | Link |
|---|---|
| CN (1) | CN214698918U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117135436A (en) * | 2023-03-22 | 2023-11-28 | 荣耀终端有限公司 | Driving motor, camera module and electronic equipment |
-
2021
- 2021-04-13 CN CN202120751126.8U patent/CN214698918U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117135436A (en) * | 2023-03-22 | 2023-11-28 | 荣耀终端有限公司 | Driving motor, camera module and electronic equipment |
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