CN220622564U - Train brake pad - Google Patents
Train brake pad Download PDFInfo
- Publication number
- CN220622564U CN220622564U CN202321642004.0U CN202321642004U CN220622564U CN 220622564 U CN220622564 U CN 220622564U CN 202321642004 U CN202321642004 U CN 202321642004U CN 220622564 U CN220622564 U CN 220622564U
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- spherical
- triangular support
- steel back
- friction
- triangular
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- 241000357293 Leptobrama muelleri Species 0.000 claims abstract description 49
- 238000007667 floating Methods 0.000 claims abstract description 22
- 238000009434 installation Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 13
- 238000005299 abrasion Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Abstract
A train brake pad comprising: the device comprises a steel back, N triangular supports, 3N friction blocks and 3N spring bayonets; each friction block is arranged on the steel back through a triangular bracket; the steel back is provided with N spherical grooves and 3N mounting holes; three spherical concave cavities and a positioning pin are arranged on each triangular bracket; the triangular support is provided with a spherical bulge, and the positioning pin is positioned at the top of the spherical bulge; the triangular support is arranged in the positioning hole through a positioning pin and is matched with the spherical groove through a spherical bulge; and each friction block is provided with a back plate, the back plate is provided with a spherical boss and a shaft pin, the shaft pin is arranged on the steel back through a mounting hole, and the spherical boss is embedded in the spherical concave cavity. According to the utility model, the friction block is matched with the triangular support through the spherical structure, the triangular support is also matched with the steel back through the spherical structure, the friction block on the triangular support in braking can generate a floating effect, so that the stress is more uniform, and the eccentric wear amount generated by the friction block can be effectively reduced.
Description
Technical Field
The utility model relates to a brake pad manufacturing technology, in particular to a train brake pad, and belongs to the technical field of brake pad production and manufacturing.
Background
At present, disc brake systems are adopted in domestic motor train unit trains, huge kinetic energy in the running process of the trains is converted into heat energy through friction between brake pads and brake discs, the running speed of the trains is slowed down, and the motor train unit trains are ensured to finish parking braking within a safe distance. The brake pad is the most critical executive component in a train braking system of a motor train unit, not only is the stable, wear-resistant and high-temperature-resistant friction coefficient required, but also the effective friction area of the brake pad and a brake disc is ensured, the phenomena of unstable braking, abnormal abrasion, edge breakage, block falling and the like caused by eccentric wear are reduced, and the braking efficiency and the service life of the brake pad are improved.
The powder metallurgy brake pad for the motor train unit in the prior art generally comprises a steel back, a regulator, a friction block and a spring buckle; the friction block pin shaft passes through the through hole on the adjuster and the steel back mounting hole is connected with the steel back through the spring buckle. The friction blocks are divided into a first friction block hexagon and a second friction block pentagon. The second friction blocks are distributed in two rows along the edges of the inner arc and the outer arc of the front surface of the steel back and clamp the first friction blocks in the middle. The friction blocks are distributed more dispersedly, and in each friction block group, the distances from each friction block in the group to the stress point are different; the phenomenon that the stress is uneven and the abrasion degree of friction blocks in the group is inconsistent or abnormal abrasion exists; even if a spherical contact surface is arranged below each friction block, the single friction block can realize floating deflection; however, since the positions of the friction blocks of each group are different, the abrasion amounts between the friction blocks of each group are not uniform.
Therefore, developing a brake pad that can effectively reduce the eccentric wear of the friction block is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The utility model aims to solve the technical problem of overcoming the defects in the prior art and providing the train brake pad with the friction block capable of being effectively regulated in a floating manner.
The train brake pad of the utility model comprises: the device comprises a steel back, N triangular supports, 3N friction blocks and 3N spring bayonets; each friction block is arranged on the steel back through the triangular support; the steel back is provided with N spherical grooves and 3N mounting holes, and the bottom of each spherical groove is provided with a positioning hole; three spherical concave cavities and a positioning pin are arranged on each triangular support, and through holes are formed in the bottoms of the spherical concave cavities; the triangular support is provided with a spherical bulge, and the positioning pin is positioned at the top of the spherical bulge; the triangular support is arranged in the positioning hole through the positioning pin, so that the triangular support is matched with the spherical groove through the spherical protrusion; a back plate is arranged on each friction block, and a spherical boss is arranged on each back plate; the spherical boss is provided with a shaft pin, the shaft pin penetrates through the through hole and is installed on the steel back through the installation hole, and the spherical boss is embedded in the spherical concave cavity.
Further, each triangular support is provided with a limiting bayonet lock, and the limiting bayonet lock and the locating pin are positioned on the same side of the triangular support; a limiting hole is formed in the steel back; each triangular support is inserted into the limiting hole through the limiting bayonet lock on the triangular support.
Further, the floating clearance between the triangular support and the steel back in spherical surface fit is 0.3-0.6mm, and the floating clearance between the triangular support and the friction block upper back plate in spherical surface fit is 0.8-1.4mm.
Further, the friction surface of the friction block is a round-corner regular hexagon; the friction blocks are distributed on the left side and the right side of the steel back in a trapezoid shape along the symmetry axis of the steel back.
Further, an annular clamping groove is formed in the top of the shaft pin, and a spring buckle is installed in the annular clamping groove; the friction block is buckled and mounted on the steel back through the spring; and the steel back is provided with an accommodating counter bore for accommodating the spring buckle.
Further, three friction blocks are arranged on the triangular support, the three friction blocks are in central symmetry along the center of the positioning pin, and a gap of 1-2mm is arranged between the friction blocks.
Further, a gap of 3-6mm is arranged between the friction blocks on the adjacent triangular supports.
Further, the N is equal to 5 or 6, preferably N is equal to 6.
In the braking process of the train, the friction blocks are in contact fit with the triangular support through the spherical structure, and the triangular support is also in contact fit with the steel back through the spherical structure, so that the friction blocks on the triangular support can generate a floating displacement effect when braking is performed, the stress is more uniform, and the eccentric wear condition of the friction blocks can be effectively reduced.
Drawings
FIG. 1 is an overall schematic diagram of a train brake pad according to an embodiment of the present utility model;
FIG. 2 is a schematic view of section C-C of FIG. 1;
FIG. 3 is a schematic view of the friction block of FIG. 1;
FIG. 4 is a schematic view of the steel back structure of FIG. 1;
FIG. 5 is a schematic view of the triangular bracket of FIG. 1;
FIG. 6 is a schematic back view of FIG. 5;
FIG. 7 is a schematic view in section A-A of FIG. 6;
fig. 8 is a schematic back view of fig. 4.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1, and with reference to fig. 2-7; the train brake pad of the embodiment of the utility model comprises: comprising the following steps: the steel back is 1, the 6 triangular supports are 3, the 18 friction blocks are 2, and the 18 spring bayonets are 4; each friction block 2 is mounted on the steel back 1 through the triangular support 3; 6 spherical grooves 10 and 18 mounting holes 12 are formed in the steel back 1, and a positioning hole 11 is formed in the bottom of each spherical groove 10; three spherical concave cavities 33 and a positioning pin 31 are arranged on each triangular bracket 3, and a through hole 34 is formed in the bottom of each spherical concave cavity 33; the triangular support 3 is provided with a spherical protrusion 30, and the positioning pin 31 is positioned at the top of the spherical protrusion 30; the triangular support 3 is installed in the positioning hole 11 through the positioning pin 31, so that the triangular support 3 is matched with the spherical groove 10 through the spherical protrusion 30; a back plate 20 is arranged on each friction block 2, and a spherical boss 21 is arranged on the back plate 20; the spherical boss 21 is provided with a shaft pin 22, the shaft pin 22 passes through the through hole 34 and is installed on the steel back 1 through the installation hole 12, and the spherical boss 21 is embedded in the spherical concave cavity 33.
A limiting bayonet lock 32 is arranged on each triangular support 3, and the limiting bayonet lock 32 and the positioning pin 31 are positioned on the same side of the triangular support 3; a limiting hole 13 is formed in the steel back 1; each triangular bracket 3 is inserted into the limiting hole 13 through the limiting bayonet 32 thereon.
The floating clearance between the triangular support 3 and the steel back 1 in spherical fit is 0.4mm, and the floating clearance between the triangular support 3 and the back plate 20 on the friction block 2 in spherical fit is 1.1mm.
The friction surface of the friction block 2 is round-corner regular hexagon; the friction blocks 2 are distributed on the left side and the right side of the steel back 1 in a trapezoid shape along the symmetry axis of the steel back 1.
An annular clamping groove 23 is formed in the top of the shaft pin 22, and a spring buckle 4 is installed in the annular clamping groove 23; the friction block 2 is mounted on the steel back 1 through the spring buckle 4; the steel back 1 is provided with an accommodation counter bore 14 for accommodating the spring buckle 4.
Three friction blocks 2 are arranged on the triangular support 3, the three friction blocks 2 are symmetrical in center along the center of the positioning pin 31, and a gap of 1.5mm is arranged between the friction blocks 2.
A gap of 4.5mm is arranged between the friction blocks 2 on the adjacent triangular supports 3.
The limit bayonet lock 32 ensures that the whole triangular support 3 can not rotate relative to the steel back 1, and the mutual collision of friction blocks on adjacent triangular supports is avoided.
And a gap of 3-6mm is arranged between the friction blocks 2 on the adjacent triangular supports 3. Thereby forming chip removal channels between the triangular supports 3 and ensuring good chip removal, ventilation and heat dissipation effects.
The friction blocks 2 adopt regular hexagon structures with round corners, and a self-locking structure can be formed among the three friction blocks 2 on each triangular support 3, so that an additional rotation stopping structure is not needed; and only one friction block is adopted, so that the production cost is reduced.
In the using process of the brake pad, the friction block is in contact fit with the triangular support through the spherical structure, and the triangular support is also in contact fit with the steel back through the spherical structure; thereby the surface contact fit is formed between the triangular support and the steel back and between the friction block and the triangular support; in the actual use process, when the friction blocks are matched with the brake pads in a contact way, not only the single friction block has a certain floating effect, but also the friction blocks on each triangular support can integrally maintain a certain floating effect, so that the stress of all the friction blocks is more uniform. When the brake pad is used, the eccentric wear amount of the friction block is 1.0-1.8mm; in the prior art of the brake discs of the same type, the eccentric wear amount of the friction block is 5-7.5mm.
Example 2
The difference between this embodiment and embodiment 1 is that the floating gap between the triangular support 3 and the steel back 1 is 0.3mm, and the floating gap between the triangular support 3 and the back plate 20 on the friction block 2 is 0.8mm; three friction blocks 2 are arranged on the triangular support 3, the three friction blocks 2 are symmetrical in center along the center of the positioning pin 31, and a gap of 1.0mm is arranged between the friction blocks 2. A gap of 3.0mm is arranged between the friction blocks 2 on the adjacent triangular supports 3.
When the brake pad is used, the eccentric wear amount of the friction block is 1.0-1.6mm; in the prior art of the brake discs of the same type, the eccentric wear amount of the friction block is 5-7.5mm.
The procedure is as in example 1.
Example 3
The difference between this embodiment and embodiment 1 is that the floating gap between the triangular support 3 and the steel back 1 is 0.6mm, and the floating gap between the triangular support 3 and the back plate 20 on the friction block 2 is 1.4mm; three friction blocks 2 are arranged on the triangular support 3, the three friction blocks 2 are symmetrical in center along the center of the positioning pin 31, and gaps of 2.0mm are arranged between the friction blocks 2. A gap of 6.0mm is arranged between the friction blocks 2 on the adjacent triangular supports 3.
When the brake pad is used, the eccentric wear amount of the friction block is 1.2-2.2mm; in the prior art of the brake discs of the same type, the eccentric wear amount of the friction block is 5-7.5mm.
The procedure is as in example 1.
Example 4
The difference between this embodiment and embodiment 1 is that N is equal to 5, the floating gap between the triangular support 3 and the steel back 1 is 0.5mm, and the floating gap between the triangular support 3 and the back plate 20 on the friction block 2 is 1.0mm; three friction blocks 2 are arranged on the triangular support 3, the three friction blocks 2 are symmetrical in center along the center of the positioning pin 31, and a gap of 1.8mm is arranged between the friction blocks 2. A gap of 5.5mm is arranged between the friction blocks 2 on the adjacent triangular supports 3.
When the brake pad is used, the eccentric wear amount of the friction block is 1.2-2.0mm; in the prior art of the brake discs of the same type, the eccentric wear amount of the friction block is 5-7.5mm.
The procedure is as in example 1.
Example 5
The difference between this embodiment and embodiment 1 is that N is equal to 5, the floating gap between the triangular support 3 and the steel back 1 is 0.6mm, and the floating gap between the triangular support 3 and the back plate 20 on the friction block 2 is 0.8mm; three friction blocks 2 are arranged on the triangular support 3, the three friction blocks 2 are symmetrical in center along the center of the positioning pin 31, and gaps of 2.0mm are arranged between the friction blocks 2. A gap of 6.0mm is arranged between the friction blocks 2 on the adjacent triangular supports 3.
When the brake pad is used, the eccentric wear amount of the friction block is 1.1-2.1mm; in the prior art of the brake discs of the same type, the eccentric wear amount of the friction block is 5-7.5mm.
The procedure is as in example 1.
Example 6
The difference between this embodiment and embodiment 1 is that N is equal to 5, the floating gap between the triangular support 3 and the steel back 1 is 0.3mm, and the floating gap between the triangular support 3 and the back plate 20 on the friction block 2 is 1.4mm; three friction blocks 2 are arranged on the triangular support 3, the three friction blocks 2 are symmetrical in center along the center of the positioning pin 31, and a gap of 1.0mm is arranged between the friction blocks 2. A gap of 3.0mm is arranged between the friction blocks 2 on the adjacent triangular supports 3.
When the brake pad is used, the eccentric wear amount of the friction block is 1.0-2.0mm; in the prior art of the brake discs of the same type, the eccentric wear amount of the friction block is 5-7.5mm.
The procedure is as in example 1.
The foregoing embodiment numbers of the present utility model are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments. From the description of the above embodiments, it will be apparent to those skilled in the art that the above example methods may be implemented by means of a superposition of some variants plus the necessary general techniques; of course, the method can also be realized by simplifying some important technical features. Based on such understanding, the technical solution of the present utility model essentially or partly contributes to the prior art is: overall structure, and with the methods described in the various embodiments of the utility model.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (8)
1. A train brake pad, comprising: the device comprises a steel back, N triangular supports, 3N friction blocks and 3N spring bayonets; each friction block is arranged on the steel back through the triangular support; the steel back is provided with N spherical grooves and 3N mounting holes, and the bottom of each spherical groove is provided with a positioning hole;
three spherical concave cavities and a positioning pin are arranged on each triangular support, and through holes are formed in the bottoms of the spherical concave cavities; the triangular support is provided with a spherical bulge, and the positioning pin is positioned at the top of the spherical bulge; the triangular support is arranged in the positioning hole through the positioning pin, so that the triangular support is matched with the spherical groove through the spherical protrusion;
a back plate is arranged on each friction block, and a spherical boss is arranged on each back plate; the spherical boss is provided with a shaft pin, the shaft pin penetrates through the through hole and is installed on the steel back through the installation hole, and the spherical boss is embedded in the spherical concave cavity.
2. The train brake pad of claim 1, wherein each of said triangular brackets is provided with a limit detent, said limit detent and said locating pin being on the same side of said triangular bracket; a limiting hole is formed in the steel back; each triangular support is inserted into the limiting hole through the limiting bayonet lock on the triangular support.
3. The train brake pad according to claim 1 or 2, wherein a floating gap between the triangular support and the steel back in spherical fit is 0.3-0.6mm, and a floating gap between the triangular support and the friction block upper back plate in spherical fit is 0.8-1.4mm.
4. The train brake pad of claim 1, wherein the friction surface of the friction block is rounded regular hexagon; the friction blocks are distributed on the left side and the right side of the steel back in a trapezoid shape along the symmetry axis of the steel back.
5. The train brake pad of claim 1, wherein an annular clamping groove is formed in the top of the shaft pin, and a spring buckle is installed in the annular clamping groove; the friction block is buckled and mounted on the steel back through the spring; and the steel back is provided with an accommodating counter bore for accommodating the spring buckle.
6. The train brake pad according to claim 1, wherein three friction blocks are installed on the triangular support, the three friction blocks are symmetrical in center along the center of the locating pin, and a gap of 1-2mm is arranged between the friction blocks.
7. The train brake pad of claim 1, wherein a gap of 3-6mm is provided between the friction blocks on adjacent ones of the triangular brackets.
8. The train brake pad of claim 1, wherein N is equal to 5 or 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321642004.0U CN220622564U (en) | 2023-06-26 | 2023-06-26 | Train brake pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321642004.0U CN220622564U (en) | 2023-06-26 | 2023-06-26 | Train brake pad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220622564U true CN220622564U (en) | 2024-03-19 |
Family
ID=90222595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321642004.0U Active CN220622564U (en) | 2023-06-26 | 2023-06-26 | Train brake pad |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220622564U (en) |
-
2023
- 2023-06-26 CN CN202321642004.0U patent/CN220622564U/en active Active
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| GR01 | Patent grant |