CN214007844U - Three-groove composite brake shoe for railway freight car - Google Patents
Three-groove composite brake shoe for railway freight car Download PDFInfo
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- CN214007844U CN214007844U CN202023030710.9U CN202023030710U CN214007844U CN 214007844 U CN214007844 U CN 214007844U CN 202023030710 U CN202023030710 U CN 202023030710U CN 214007844 U CN214007844 U CN 214007844U
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- brake shoe
- composite brake
- heat dissipation
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- dissipation groove
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Abstract
The utility model relates to a three-groove composite brake shoe for a railway freight car, which comprises a composite brake shoe, wherein the radial middle position of the back of the composite brake shoe is provided with a shoe nose which is bent and then protrudes outwards; the bottom of the composite brake shoe is provided with a heat dissipation groove, the heat dissipation groove comprises a first heat dissipation groove arranged at the center of the bottom of the composite brake shoe, a second heat dissipation groove and a third heat dissipation groove which are symmetrically arranged at two sides of the first heat dissipation groove, and the inner side surface of the first heat dissipation groove extends to be connected with the inner side surface of the shoe nose; the two ends of the back of the composite brake shoe are symmetrically provided with bulges. The beneficial effects increase the radiating groove gas velocity of flow, more effective dispels the heat faster, and the radiating groove is also more effective simultaneously promotes the discharge that the friction produced the fines, avoids the static that the friction can produce.
Description
Technical Field
The utility model relates to a composite brake shoe technical field specifically is a three-groove composite brake shoe for railway freight car.
Background
The brake shoe is an important part for braking of a railway locomotive and mainly comprises a shoe nose, a shoe back and a friction block, wherein the brake shoe is fixed on a shoe support connected with the locomotive through the shoe nose. During braking, the air brake generates thrust to push the tile holder to move, so that the brake shoe is attached to the wheel tread, and the railway locomotive is braked by means of the friction force between the friction block and the wheel tread.
The inventors have discovered that the wear of the composite brake shoe is related to the pressing force, coefficient of friction and temperature between the brake shoe and the wheel. In the prior art, when a locomotive brakes, a great extrusion force is generated between a composite brake shoe and a wheel, the composite brake shoe and the wheel surface generate relative friction motion under the strong extrusion force, a large amount of heat is rapidly generated, the composite brake shoe is easy to wear under the environment, the service life is short, the composite brake shoe needs to be frequently replaced, and the equipment maintenance cost is increased.
Chinese patent document CN209483836U discloses a three-groove high friction coefficient composite brake shoe for railway engineering truck, including composite brake shoe, composite brake shoe's top is equipped with the tile nose, and composite brake shoe's below is equipped with the radiating groove, and the radiating groove is including setting up the first radiating groove in composite brake shoe bottom center department, and the both ends of first radiating groove are equipped with second radiating groove and third radiating groove respectively, and second radiating groove and third radiating groove are the symmetrical structure setting, and composite brake shoe's both sides are equipped with symmetrical arch.
Among the above-mentioned patent document, because the circulation of air that produces in high-speed operation, can take away the heat through the radiating groove, the radiating groove has played the effect of chip groove simultaneously, but because the static that the friction can produce, adsorb some fines near the radiating groove, perhaps the piece that produces is outdated too much and can block up the radiating groove too soon to discharge, produce the inlay metal because of the chip removal is not smooth, inlay metal causes the damage to the wheel, the driving safety is seriously influenced, threaten the normal production operation of railway, cause important personal accident and loss of property when serious. Therefore, it is necessary to provide a three-groove composite brake shoe for railway freight cars.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a three-groove composite brake shoe for a railway freight car, which solves the problems that the heat dissipation groove is blocked by effective heat dissipation and fine scraps under high-temperature friction.
In order to achieve the purpose, the utility model adopts the following technical scheme that the three-groove composite brake shoe for the railway freight car comprises a composite brake shoe, wherein a bent convex tile nose is arranged at the radial middle position of the back of the composite brake shoe;
the bottom of the composite brake shoe is provided with a heat dissipation groove, the heat dissipation groove comprises a first heat dissipation groove arranged at the center of the bottom of the composite brake shoe, a second heat dissipation groove and a third heat dissipation groove which are symmetrically arranged at two sides of the first heat dissipation groove, and the inner side surface of the first heat dissipation groove extends to be connected with the inner side surface of the shoe nose;
the two ends of the back of the composite brake shoe are symmetrically provided with bulges.
Furthermore, the openings of the first heat dissipation groove, the second heat dissipation groove and the third heat dissipation groove are gradually increased from inside to outside along the radial direction of the composite brake shoe, and the size and the structure of the second heat dissipation groove are consistent with those of the third heat dissipation groove.
Further, the bulge is arranged in a concave structure, and the concave opening faces the tile nose.
Furthermore, the cross section of the bottom of the composite brake shoe is arranged in an arc-shaped structure.
Furthermore, eight groups of plum blossom holes are arranged above the composite brake shoe, and four groups of plum blossom holes are arranged on two sides of the shoe nose respectively and are arranged in a rectangular structure.
Furthermore, positioning protrusions are symmetrically arranged on two sides of the tile nose on the back of the composite brake shoe, and the positioning protrusions are displaced from the center of the rectangle formed by the four groups of plum blossom holes.
Further, the composite brake shoe long side is provided with wear limit markings.
The utility model has the advantages that: first radiating groove medial surface extends and is connected with the tile nose lateral surface, first radiating groove and tile nose inner chamber intercommunication, at synthetic brake shoe during operation, the air current passes the radiating groove, especially first radiating groove, increase the gaseous velocity of flow of radiating groove, more effective heat dissipation more fast, the radiating groove is the discharge that produces the fines more effectual promotion friction simultaneously, avoid the static that the friction can produce, adsorb near the radiating groove with partial fines, perhaps the piece that produces is too old too much to come the appearance that can block up the radiating groove condition of discharge.
Drawings
Fig. 1 is a schematic front view of a cross-sectional structure of the present invention;
fig. 2 is a schematic top view of the present invention;
FIG. 3 is a side view of the tile nose 2 of FIG. 1;
reference numerals: 1. the composite brake shoe comprises a composite brake shoe, 2. a brake shoe nose, 3. a first heat dissipation groove, 4. a second heat dissipation groove, 5. a bulge, 6. a third heat dissipation groove and 7. a plum blossom hole.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and embodiments.
Example (b):
referring to fig. 1, fig. 2 and fig. 3, the three-groove composite brake shoe for the railway freight car comprises a composite brake shoe 1, wherein a bent convex shoe nose 2 is arranged at the radial middle position of the back of the composite brake shoe 1;
the bottom of the composite brake shoe 1 is provided with a heat dissipation groove, the heat dissipation groove comprises a first heat dissipation groove 3 arranged at the center of the bottom of the composite brake shoe 1, a second heat dissipation groove 4 and a third heat dissipation groove 5 symmetrically arranged at two sides of the first heat dissipation groove 3, and the inner side surface of the first heat dissipation groove 3 extends to be connected with the inner side surface of the tile nose 2;
the two ends of the back of the composite brake shoe 1 are symmetrically provided with bulges 5.
The three-groove composite brake shoe for the railway freight car is provided with three radiating grooves, when the railway freight car brakes, a wheel tread and a contact surface of the composite brake shoe 1 generate a large amount of heat through friction, scraps generated by friction and the like can be effectively transferred and radiated through the radiating grooves, because the inner side of a first radiating groove 3 extends to be connected with the inner side surface of a tile nose 2, partial heat can be radiated into the atmosphere through the tile nose 2, a better radiating effect can be achieved, the width and the depth of the first radiating groove 3 are enough to ensure the radiating, meanwhile, the scraps generated by friction and the like can be discharged along the first radiating groove 3, furthermore, a second radiating groove 4 and a third radiating groove 5 which are symmetrically arranged at two sides of the first radiating groove 3 can also discharge partial heat and scraps generated by friction, the symmetrical design ensures the strength of the brake shoe in use and also ensures the heat radiation effect of scrap discharging, so that the wheel tread can continuously run under a more appropriate temperature condition, the wheel tread is more reliable and durable.
Further, in this embodiment, the openings of the first heat dissipation groove 3, the second heat dissipation groove 4 and the third heat dissipation groove 5 gradually increase from inside to outside along the radial direction of the composite brake shoe 1, and the size and the structure of the second heat dissipation groove and the third heat dissipation groove 5 are the same.
Further, in this embodiment, the protrusion is disposed in a concave structure, and the concave opening faces the tile nose 2. The two ends of the back of the composite brake shoe 1 are symmetrically provided with bulges 5, and the arrangement of the bulges 5 ensures that the brake shoe can be matched with a matched concave structure on a brake head (not shown in the figure) to form firmer connection, thereby ensuring that the brake shoe is more reliable in operation action.
Further, in this embodiment, the synthetic brake shoe 1 is provided with an arc-shaped bottom cross-section. This is to ensure better contact of the brake shoe with the wheel surface.
Further, in this embodiment, the back of the composite brake shoe 1 is provided with a plum blossom hole 7, and four sets of the shoe noses 2 are symmetrically arranged on two sides and are arranged in a rectangular structure. The design of the back plum blossom hole 7 of the composite brake shoe 1 can increase the contact area between the brake shoe and the shoe support in the actual use process of the brake shoe, the plum blossom hole 7 is in a rectangular structure and is symmetrically designed so as to ensure that the contact area between the brake shoe and the shoe support is increased, and meanwhile, the integral strength of the brake shoe is ensured not to be reduced due to the existence of the plum blossom hole 7.
Furthermore, the two sides of the back tile nose 2 of the composite brake shoe 1 are symmetrically provided with positioning protrusions 8, and the positioning protrusions 8 are displaced from the center of the rectangle formed by the four groups of holes of the plum blossom 1.
Further, in the present example, the long side of composite brake shoe 1 is provided with wear limit markings. The arrangement of the abrasion mark can help maintenance personnel to observe the abrasion condition of the contact end surface of the composite brake shoe 1 in time, so that the composite brake shoe 1 can be replaced in time, the train is ensured to have the best brake performance all the time, and the running safety of the train is ensured.
The utility model provides a pair of three-groove composite brake shoe for railway freight car's theory of operation as follows:
the three-groove composite brake shoe for the railway freight car is provided with three radiating grooves, when the railway freight car brakes, a wheel tread and a contact surface of the composite brake shoe 1 generate a large amount of heat through friction, scraps generated by friction and the like can be effectively transferred and radiated through the radiating grooves, because the inner side of a first radiating groove 3 extends to be connected with the inner side surface of a tile nose 2, partial heat can be radiated into the atmosphere through the tile nose 2, a better radiating effect can be achieved, the width and the depth of the first radiating groove 3 are enough to ensure the radiating, meanwhile, the scraps generated by friction and the like can be discharged along the first radiating groove 3, furthermore, a second radiating groove 4 and a third radiating groove 5 which are symmetrically arranged at two sides of the first radiating groove 3 can also discharge partial heat and scraps generated by friction, the symmetrical design ensures the strength of the brake shoe in use and also ensures the heat radiation effect of scrap discharging, so that the wheel tread can continuously run under a more appropriate temperature condition, the wheel tread is more reliable and durable.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The above embodiments are merely examples of the present invention, and do not limit the protection scope of the present invention, and all designs the same as or similar to the present invention belong to the protection scope of the present invention.
Claims (7)
1. The three-groove composite brake shoe for the railway freight car is characterized by comprising a composite brake shoe (1), wherein a shoe nose (2) which is bent and protrudes outwards is arranged at the radial middle position of the back of the composite brake shoe (1);
the bottom of the composite brake shoe (1) is provided with a heat dissipation groove, the heat dissipation groove comprises a first heat dissipation groove (3) arranged at the center of the bottom of the composite brake shoe (1), a second heat dissipation groove (4) and a third heat dissipation groove (6) which are symmetrically arranged at two sides of the first heat dissipation groove (3), and the inner side surface of the first heat dissipation groove (3) extends to be connected with the inner side surface of the tile nose (2);
the two ends of the back of the composite brake shoe (1) are symmetrically provided with bulges (5).
2. The three-groove composite brake shoe for railway freight cars according to claim 1, characterized in that the openings of the first heat dissipation groove (3), the second heat dissipation groove (4) and the third heat dissipation groove (6) are gradually increased from inside to outside along the radial direction of the composite brake shoe (1), and the sizes and structures of the second heat dissipation groove (4) and the third heat dissipation groove (6) are the same.
3. The triple-groove composite brake shoe for railway freight cars according to claim 1, characterized in that the protrusions (5) are arranged in a concave structure with the concave opening facing the shoe nose (2).
4. The three-groove composite brake shoe for railway freight cars as claimed in claim 1, wherein the bottom section of the composite brake shoe (1) is arranged in a circular arc structure.
5. The three-groove composite brake shoe for railway freight cars according to claim 1, characterized in that a quincunx hole (7) is arranged above the composite brake shoe (1), eight groups of the quincunx holes (7) are arranged, four groups of the brake shoe nose (2) are arranged on two sides respectively, and the brake shoe nose is arranged in a rectangular structure.
6. The three-groove composite brake shoe for railway freight cars according to claim 1, characterized in that the back shoe nose (2) of the composite brake shoe (1) is symmetrically provided with positioning protrusions (8) at both sides, and the positioning protrusions (8) are positioned at the center of a rectangle formed by four groups of plum blossom holes (7).
7. A three-groove composite brake shoe for railway freight cars according to claim 1, characterized in that the long side of the composite brake shoe (1) is provided with wear limit markings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023030710.9U CN214007844U (en) | 2020-12-16 | 2020-12-16 | Three-groove composite brake shoe for railway freight car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023030710.9U CN214007844U (en) | 2020-12-16 | 2020-12-16 | Three-groove composite brake shoe for railway freight car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214007844U true CN214007844U (en) | 2021-08-20 |
Family
ID=77311954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023030710.9U Active CN214007844U (en) | 2020-12-16 | 2020-12-16 | Three-groove composite brake shoe for railway freight car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214007844U (en) |
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2020
- 2020-12-16 CN CN202023030710.9U patent/CN214007844U/en active Active
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