CN203362913U - Anti-fracture composition brake shoe for metro vehicle - Google Patents
Anti-fracture composition brake shoe for metro vehicle Download PDFInfo
- Publication number
- CN203362913U CN203362913U CN 201320326398 CN201320326398U CN203362913U CN 203362913 U CN203362913 U CN 203362913U CN 201320326398 CN201320326398 CN 201320326398 CN 201320326398 U CN201320326398 U CN 201320326398U CN 203362913 U CN203362913 U CN 203362913U
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- China
- Prior art keywords
- brake shoe
- steel backing
- steel back
- watt
- nose position
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Abstract
The utility model discloses an anti-fracture composition brake shoe for a metro vehicle. The anti-fracture composition brake shoe for the metro vehicle comprises a steel back and a friction piece which is arranged on the steel back, wherein a brake shoe nose part which protrudes outwards is arranged in the middle of the steel back, an arc surface which is concave downwards is arranged on the top of the brake shoe nose part, and arc transition exists on the junction between the brake shoe nose part of the steel back and the cambered surface of the steel back. According to the anti-fracture composition brake shoe for the metro vehicle, due to the fact that the brake shoe nose part of the steel back of the brake shoe is divided into a plurality of cambered surfaces which are connected, the steel back is protected from deformation and cracks, interaction of brake pressure, impact force and stress can be effectively eliminated in the process that the steel back of the brake shoe is formed and used, the cracks caused by the stress in the process that the steel back is formed and used are effectively avoided, and driving safety is improved.
Description
Technical field
The utility model relates to the subway train braking and uses the brake shoe technical field, especially relates to the anti-fracture composite brake shoe of a kind of railcar.
Background technique
Track traffic is the mode that significantly improves traffic transport power supply capacity, can be the alleviation traffic congestion basic guarantee is provided.The operation experience of Foreign Metropolis city rail shows, greatly develops city rail and be the block up important channel of a difficult problem of domestic communication of releiving.Day by day serious along with urban traffic blocking, domestic city track traffic development will further be raised speed, and the future development space is large.Along with the development of urban track traffic, brake shoe also is widely applied as requisite brake member in a rail vehicle automatic system.
Brake shoe for train braking system should meet following requirement: (1) brake shoe structurally should meet usage requirement, guarantees that in use the brake shoe steel backing does not crack; (2) have height and stable friction factor, its material all should possess stable friction factor and the little character of heat-fading of trying one's best under braking and long steep grade braking condition continuously; (3) consider the combination property of material, suitably reduce the Young's modulus of brake shoe, while making its braking, can increase to greatest extent with the laminating degree of wheel tread and reach braking ability preferably; (4) increase the brake shoe thermal diffusivity, reduce the hot(test)-spot temperature of wheel tread. and consider brake shoe hardness number stability, reduce the damascene that is harmful to wheel; (5) when considering brake shoe self wear resistance, require its material should reduce the abrasion to wheel as far as possible; (6) focus on environmental protection.
Brake shoe in use, steel backing is not only bearing the impact force of brake head while braking, the fricative shearing force of friction piece and wheel while also bearing braking, and, due to the effect that is subject to retardation pressure, stress deformation and plastic deformation also can occur in the steel backing position of brake shoe.Therefore how to make the steel backing of brake shoe there is higher fatigue life and satisfactory texture, to guarantee that brake shoe is in braking using process frequently, steel backing can not crack, and to guarantee the subway train traffic safety, is current Construction of Urban Rail Traffic technical field problem demanding prompt solution.
The model utility content
In order to address the above problem, the utility model provides a kind of railcar anti-fracture composite brake shoe, this brake shoe mechanical strength is good, can effectively solve the steel backing breakage problem that brake shoe causes in the frequent using process of braking, the working life of greatly improving the brake shoe steel backing.
The utility model is achieved by following technical solution.
The anti-fracture composite brake shoe of a kind of railcar, comprise steel backing and be arranged at the friction piece on steel backing, and described steel backing middle part is watt nose position of outwardly convex, and top, described watt of nose position is set to recessed arc surface, under watt nose position, is provided with liner.
Described steel backing is provided with some kidney-shaped reinforced holes.
Watt nose position of described steel backing and the cambered surface intersection of steel backing adopt arc transition.
Be positioned at watt both sides, nose position and be respectively equipped with locating stud on described steel backing
Described liner and locating stud all are welded on steel backing by welding manner.
The beneficial effects of the utility model are:
Railcar described in the utility model has the advantages such as mechanical strength is good, fatigue resistance is high, working life is high with synthetic Anti-breaking brake shoe.And because watt nose position by the brake shoe steel backing is divided into many places circular arc cambered surface handing-over, thereby the distortion of steel backing and the generation of crackle have been avoided.By the arc transition structure, the steel backing that guarantees brake shoe can effectively be eliminated the interaction effect of retardation pressure, impact force and stress in shaping and using process, effectively avoided steel backing to form the phenomenon of living crackle due to effect of stress in shaping and using process, improve traffic safety, and be beneficial to batch production.With the conventional structure of brake shoe in prior art, compare, working life, efficiency can improve more than 120%.
The accompanying drawing explanation
Fig. 1 is the utility model plane structure schematic diagram;
Fig. 2 is the utility model perspective view;
The partial schematic diagram of the steel backing that Fig. 3 is composite brake shoe described in the utility model watt nose position.
In figure: 1-steel backing, 2-liner, 3-friction piece, 4-locating stud, 5-watt of nose position, 6-kidney-shaped reinforced hole.
Embodiment
Further describe the technical solution of the utility model below in conjunction with accompanying drawing, but that claimed scope is not limited to is described.
As shown in Figure 1 to Figure 3, the anti-fracture composite brake shoe of the described a kind of railcar of this practical sexual type, comprise steel backing 1 and be arranged at the friction piece 3 on steel backing 1, watt nose position 5 that described steel backing 1 middle part is outwardly convex, 5 tops, described watt of nose position are set to recessed arc surface, be provided with liner 2 under watt nose position 5, the effect of described liner 2 is the convenient area that enlarges friction piece 3.
Described steel backing 1 is provided with some kidney-shaped reinforced holes 6.Like this, friction piece 3 when compressing by being embedded on the kidney-shaped reinforced hole 6 on steel backing 1, thereby strengthen the power that is connected of friction piece 3 and steel backing 1.
For convenience of installation and the location of brake shoe on the brake head of railcar, be positioned at watt 5 both sides, nose position and be respectively equipped with locating stud 4 on steel backing 1.
Described liner 2 and locating stud 4 all are welded on steel backing 1 by welding manner.
5 tops, described watt of nose position are set to recessed arc surface.
The utility model takes full advantage of arc transition and eliminates stress concentratedly, eliminates brake shoe steel backing stress in use, has avoided the distortion of steel backing and the generation of crackle, thereby reach, extends the steel backing purpose in working life.Compare with existing conventional brake shoe structure, adopt the utility model efficiency in working life to improve more than 120%, and technological process is simpler, manufacturing efficiency is higher.
Claims (5)
1. the anti-fracture composite brake shoe of railcar, comprise steel backing (1) and be arranged at the friction piece (3) on steel backing (1), it is characterized in that: described steel backing (1) middle part is watt nose position (5) of outwardly convex, top, described watt of nose position (5) is set to recessed arc surface, under watt nose position (5), is provided with liner (2).
2. the anti-fracture composite brake shoe of a kind of railcar according to claim 1, it is characterized in that: described steel backing (1) is provided with some kidney-shaped reinforced holes (6).
3. the anti-fracture composite brake shoe of a kind of railcar according to claim 1, is characterized in that: watt nose position (5) of described steel backing (1) and the cambered surface intersection of steel backing (1) employing arc transition.
4. the anti-fracture composite brake shoe of a kind of railcar according to claim 1, is characterized in that: be positioned at watt both sides, nose position (5) and be respectively equipped with locating stud (4) on steel backing (1).
5. the anti-fracture composite brake shoe of a kind of railcar according to claim 1, it is characterized in that: described liner (2) and locating stud (4) all are welded on steel backing (1) by welding manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320326398 CN203362913U (en) | 2013-06-06 | 2013-06-06 | Anti-fracture composition brake shoe for metro vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320326398 CN203362913U (en) | 2013-06-06 | 2013-06-06 | Anti-fracture composition brake shoe for metro vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203362913U true CN203362913U (en) | 2013-12-25 |
Family
ID=49810685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320326398 Expired - Fee Related CN203362913U (en) | 2013-06-06 | 2013-06-06 | Anti-fracture composition brake shoe for metro vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203362913U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963971A (en) * | 2015-06-30 | 2015-10-07 | 贵州新安航空机械有限责任公司 | Powder metallurgy brake shoe structure and machining method thereof |
| CN105317890A (en) * | 2015-12-08 | 2016-02-10 | 南车二七车辆有限公司 | Brake shoe key for wagon |
-
2013
- 2013-06-06 CN CN 201320326398 patent/CN203362913U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963971A (en) * | 2015-06-30 | 2015-10-07 | 贵州新安航空机械有限责任公司 | Powder metallurgy brake shoe structure and machining method thereof |
| CN104963971B (en) * | 2015-06-30 | 2018-09-14 | 贵州新安航空机械有限责任公司 | A kind of powder metallurgy brake block structure and its processing method |
| CN105317890A (en) * | 2015-12-08 | 2016-02-10 | 南车二七车辆有限公司 | Brake shoe key for wagon |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 |