CN206487798U - Friction piece, brake shoe - Google Patents
Friction piece, brake shoe Download PDFInfo
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- CN206487798U CN206487798U CN201621301336.2U CN201621301336U CN206487798U CN 206487798 U CN206487798 U CN 206487798U CN 201621301336 U CN201621301336 U CN 201621301336U CN 206487798 U CN206487798 U CN 206487798U
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- rubbing surface
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Abstract
The utility model provides a kind of friction piece, brake shoe.The friction piece includes：Powder metallurgy matrix and carbon pottery matrix, powder metallurgy matrix has the first rubbing surface for being used for coordinating with wheel tread, carbon pottery matrix has the second rubbing surface for being used for coordinating with wheel tread, wherein, powder metallurgy matrix offers mounting hole on the first rubbing surface, carbon pottery matrix is arranged in mounting hole, and the face where the second rubbing surface of carbon pottery matrix is overlapped with the face where the first rubbing surface of powder metallurgy matrix.In the friction piece that the utility model is provided, friction piece combines powder metallurgy matrix and carbon pottery matrix, so as to which one side friction piece has the advantages that small thermal coefficient of expansion, high temperature resistant, frictional behaviour are high and stable in high-speed train braking, on the other hand, friction piece employs powder metallurgy matrix, it also ensure that manufacturing cost will not be too high, beneficial to being promoted at present on bullet train.
Description
Technical field
The utility model is related to braking technology field, and in particular to a kind of friction piece, brake shoe.
Background technology
Track traffic is mainly used in rail traffic vehicles tread brake with brake shoe, passes through the rubbing surface and wheel tread of brake shoe
Contact, is converted into frictional heat energy, so as to realize the braking of train, it is ensured that train in the presence of brake pressure by the kinetic energy of train
Driving and brake safe.
In the prior art, the material that track traffic is manufactured with brake shoe have polymer matrix composites, powdered metallurgical material and
Carbon ceramic material etc..Wherein, polymer matrix composites mainly extensive use, powder on the relatively low train of below 120km/h speed
The main extensive use on the higher train of more than 120km/h speed of metallurgical brake shoe, carbon ceramic material has that density is low, thermal expansion system
The small, high temperature resistants of number, frictional behaviour are high and stably, the especially good advantage of hygrometric state stable friction performance, but be due to technology
Manufacturing cost is high caused by immature, has to a small amount of application ON TRAINS at present.
And it is current, with the development of bullet train, the increase of train braking energy, on bullet train in the prior art
Widely used powder metallurgy brake block, produces higher temperature when being braked at a high speed due to train, powder metallurgy brake block has high temperature
Easy bonding, elevated temperature strength decline significantly, thermal shock resistance is poor, service life is short and hygrometric state condition under frictional behaviour it is poor etc. scarce
Fall into, it is difficult to meet the use requirement of bullet train.
Utility model content
Main purpose of the present utility model is to provide a kind of friction piece, brake shoe, to solve bullet train in the prior art
The problem of braking ability is poor during braking.
To achieve the above object, the utility model provides a kind of friction piece, including：Powder metallurgy matrix and carbon Tao Ji
Body, powder metallurgy matrix has the first rubbing surface for being used for coordinating with wheel tread, and carbon pottery matrix, which has, to be used for and wheel tread
The second rubbing surface coordinated, wherein, powder metallurgy matrix offers mounting hole on the first rubbing surface, and carbon pottery matrix is arranged on peace
Fill in hole, and the face where the second rubbing surface of carbon pottery matrix is overlapped with the face where the first rubbing surface of powder metallurgy matrix.
Further, the first rubbing surface and the second rubbing surface are curved surface.
Further, the surface area of the first rubbing surface and the surface area ratio of the second rubbing surface are 1:1 to 1.2:1 it
Between.
Further, the quantity of mounting hole is multiple, and the quantity of corresponding carbon pottery matrix is multiple.
Further, multiple mounting holes are uniformly distributed on the first rubbing surface.
Further, mounting hole is through hole or blind hole.
The utility model also provides a kind of brake shoe, including backboard and at least one friction piece on backboard, friction
Body is friction piece as described above.
Technical solutions of the utility model, have the following advantages that：
1. in the friction piece that the utility model is provided, friction piece combines powder metallurgy matrix and carbon pottery matrix, so that one
Aspect friction piece has the advantages that small thermal coefficient of expansion, high temperature resistant, frictional behaviour are high and stable in high-speed train braking, meets
Train efficient braking ability, on the other hand, friction piece employ powder metallurgy matrix, add the thermal capacity of friction piece and lead
While hot property, it also ensure that manufacturing cost will not be too high, beneficial to being promoted at present on bullet train.
2. in the friction piece that the utility model is provided, surface area and the carbon Tao Ji of the first rubbing surface of powder metallurgy matrix
The surface area ratio of the rubbing surface of body second is 1:1 to 1.2:Between 1, so, friction piece rubs when bullet train is braked
The braking ability of rub body can obtain larger carry relative to the braking ability for the powder metallurgy friction block that friction piece is used alone
Rise, it is sufficient to suitable for the braking requirement of current bullet train.Carbon ceramic material is used simultaneously and non-fully, expensive carbon pottery material is reduced
The use of material, relative to the friction piece using single carbon ceramic material, the manufacturing cost of friction piece is relatively low, beneficial on bullet train
Promote the use of.
3. in the friction piece that the utility model is provided, the quantity of mounting hole is multiple, and the quantity of corresponding carbon pottery matrix is
Multiple, in the case where not increasing carbon pottery matrix consumption, scattered multiple carbon pottery matrix is arranged on powder metallurgy matrix favorably
In the scattered of friction piece heat in the course of the work, beneficial to the radiating of friction piece.
4. in the brake shoe that the utility model is provided, due to the friction piece for having used the utility model to provide, so that at a high speed
Have the advantages that small thermal coefficient of expansion, high temperature resistant, frictional behaviour are high and stable during train braking, meet the efficient braking of train
Can, on the other hand, in brake shoe carbon ceramic material is used also and non-fully, also ensure that manufacturing cost will not be too high, beneficial to existing at present
Promoted on bullet train.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that, describe below
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.In the accompanying drawings：
Fig. 1 is the dimensional structure diagram of brake shoe in first embodiment of the present utility model；
Fig. 2 is the main structure diagram of brake shoe shown in Fig. 1；
Fig. 3 is structural representation of the brake shoe along B directions shown in Fig. 2；
Fig. 4 is cross section structure diagram of the brake shoe along A-A directions shown in Fig. 2；
The cross section structure diagram of friction piece in brake shoe shown in Fig. 5 Fig. 1.
Wherein, the reference in above-mentioned accompanying drawing is：
10- powder metallurgy matrixes；The rubbing surfaces of 11- first；20- carbon pottery matrix；The rubbing surfaces of 21- second；30- backboards.
Embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described
Embodiment is a part of embodiment of the utility model, rather than whole embodiments.Based on the embodiment in the utility model, sheet
The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality
Novel protected scope.
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation or position relationship of the instruction such as " level ", " interior ", " outer " are, based on orientation shown in the drawings or position relationship, to be only
Described for the ease of description the utility model and simplifying, rather than to indicate or imply that signified device or element must have specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or implying relative importance.
Embodiment 1
As shown in Figures 3 to 5, powder metallurgy matrix 10 is included according to the friction piece of the utility model embodiment and carbon is made pottery
Matrix 20, powder metallurgy matrix 10 has the first rubbing surface 11 for being used for coordinating with wheel tread, and carbon pottery matrix 20, which has, to be used for
The second rubbing surface 21 coordinated with wheel tread, wherein, powder metallurgy matrix 10 offers mounting hole on the first rubbing surface 11,
Carbon pottery matrix 20 is arranged in mounting hole, and the face where the second rubbing surface 21 of carbon pottery matrix 20 and powder metallurgy matrix 10
Face where first rubbing surface 11 is overlapped.
Due to combining powder metallurgy matrix 10 and carbon pottery matrix 20 in the friction piece in the utility model embodiment, so that
One side friction piece has the advantages that small thermal coefficient of expansion, high temperature resistant, frictional behaviour are high and stable in high-speed train braking, full
The foot efficient braking ability of train, on the other hand, friction piece employs powder metallurgy matrix 10, adds the thermal capacity of friction piece
While with heat conductivility, it also ensure that manufacturing cost will not be too high, beneficial to being promoted at present on bullet train.
Specifically, as depicted in figs. 1 and 2, the first rubbing surface 11 coordinated in the utility model embodiment with wheel tread
It is curved surface with the second rubbing surface 21, the curvature of the first rubbing surface 11 and the curved surface of the second rubbing surface 21 is needed according to wheel tread
Shape is adjusted.
Preferably, in the friction piece in the utility model embodiment, the first rubbing surface 11 of powder metallurgy matrix 10
Surface area and the surface area ratio of the carbon pottery rubbing surface 21 of matrix 20 second are 1:1 to 1.2:Between 1.Through measuring and calculating, at this
In proportion, friction piece when bullet train is braked, what the braking ability of friction piece was used alone relative to friction piece
The braking ability of powder metallurgy friction block can be highly improved, it is sufficient to suitable for the braking requirement of current bullet train.
Carbon ceramic material is used simultaneously and non-fully, the use of expensive carbon ceramic material is reduced, relative to rubbing using single carbon ceramic material
Rub body, the manufacturing cost of friction piece is relatively low, is promoted the use of beneficial on bullet train.
With further reference to Fig. 3, in the utility model embodiment the quantity of mounting hole be it is multiple, corresponding carbon pottery matrix 20
Quantity is multiple, in the case where not increasing the carbon pottery consumption of matrix 20, and scattered multiple carbon pottery matrix 20 is arranged in powder metallurgy
Be conducive to the scattered of friction piece heat in the course of the work on matrix 10, beneficial to the radiating of friction piece.
Preferably, multiple mounting holes are uniformly distributed on the first rubbing surface 11, the multiple carbon pottery matrix 20 being arranged so as to
It is uniformly distributed on powder metallurgy matrix 10, uniform force when being conducive to friction, it is ensured that the stabilization of friction piece operationally performance,
Braking is steady.
Specifically, the mounting hole in the utility model embodiment on friction piece be through hole or blind hole, using through hole just
In being processed, it is also beneficial to save carbon ceramic material using blind hole, while the not excessively consumption of increase carbon ceramic material,
Ensure performance of the friction piece when high speed is braked.
As shown in figures 1 and 3, the utility model also provides a kind of brake shoe, including backboard 30 and on backboard 30
Three friction pieces, friction piece is the friction piece described in above-described embodiment.So as to which the brake shoe in the utility model embodiment exists
Have the advantages that small thermal coefficient of expansion, high temperature resistant, frictional behaviour are high and stable during high-speed train braking, meet train and efficiently make
Dynamic performance, on the other hand, also and non-fully using carbon ceramic material in brake shoe, also ensure that manufacturing cost will not be too high, beneficial to mesh
It is preceding to be promoted on bullet train.
Embodiment 2
The utility model also provides a kind of processing method of friction piece, comprises the following steps：S10：By powder metallurgy matrix
10 powder-material forms prefabricated blank during cold pressing after reserving mounting hole, cold pressing；S20：Carbon pottery matrix 20 is put into powder
In the mounting hole of last metallurgy matrix 10；S30：By the prefabricated blank progress high temperature sintering for matrix 20 of being made pottery with carbon.Carbon make pottery matrix 20 with
The mode of interference fit is put into the mounting hole of powder metallurgy matrix 10.
Using the processing method of the friction piece of the present embodiment, carbon pottery matrix 20 can be securely fixed in powder metallurgy base
In body 10, make the combination of carbon pottery matrix 20 and powder metallurgy matrix 10 more solid and reliable, improve the braking ability of friction piece,
Extend the service life of friction piece.
Preferably, carbon pottery matrix 20 is put into the way of inlaying in the preformed hole of powder metallurgy matrix 10, so follow-up
Processing and it is difficult to separate with powder metallurgy matrix 10 using middle carbon pottery matrix 20, further ensures friction piece in use
Reliability.
Preferably, it is further comprising the steps of after step S30：Step S40：Curing process is carried out after hot-forming；
Step S50：It is machined after solidification.The overall performance of friction piece so can be further improved, mill is effectively reduced
Damage, and then stable brake force.
Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among the protection domain that variation is created still in the utility model.
Claims (7)
1. a kind of friction piece, it is characterised in that including：Powder metallurgy matrix (10) and carbon pottery matrix (20), the powder smelting
Auri body (10) has the first rubbing surface (11) for being used for coordinating with wheel tread, and the carbon pottery matrix (20), which has, to be used for and car
The second rubbing surface (21) that wheel tread coordinates, wherein, the powder metallurgy matrix (10) is opened on first rubbing surface (11)
Provided with mounting hole, the carbon pottery matrix (20) is arranged in the mounting hole, and the second rubbing surface of carbon pottery matrix (20)
(21) face where is overlapped with the face where the first rubbing surface (11) of the powder metallurgy matrix (10).
2. friction piece according to claim 1, it is characterised in that first rubbing surface (11) and second rubbing surface
(21) it is curved surface.
3. friction piece according to claim 2, it is characterised in that the surface area of first rubbing surface (11) with it is described
The surface area ratio of second rubbing surface (21) is 1:1 to 1.2:Between 1.
4. friction piece according to claim 1, it is characterised in that the quantity of the mounting hole be it is multiple, it is corresponding described
The quantity of carbon pottery matrix (20) is multiple.
5. friction piece according to claim 4, it is characterised in that the multiple mounting hole is in first rubbing surface (11)
On be uniformly distributed.
6. friction piece according to claim 1, it is characterised in that the mounting hole is through hole or blind hole.
7. a kind of brake shoe, it is characterised in that at least one friction piece including backboard (30) and on the backboard (30),
The friction piece is the friction piece any one of claim 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621301336.2U CN206487798U (en) | 2016-11-30 | 2016-11-30 | Friction piece, brake shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621301336.2U CN206487798U (en) | 2016-11-30 | 2016-11-30 | Friction piece, brake shoe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206487798U true CN206487798U (en) | 2017-09-12 |
Family
ID=59769161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621301336.2U Active CN206487798U (en) | 2016-11-30 | 2016-11-30 | Friction piece, brake shoe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206487798U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763356A (en) * | 2016-11-30 | 2017-05-31 | 北京天宜上佳新材料股份有限公司 | The processing method of friction piece, brake shoe and friction piece |
-
2016
- 2016-11-30 CN CN201621301336.2U patent/CN206487798U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763356A (en) * | 2016-11-30 | 2017-05-31 | 北京天宜上佳新材料股份有限公司 | The processing method of friction piece, brake shoe and friction piece |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 102206 Haidian District, Beijing, Shanghai town, xinxinli village, South Railway 500 meters north. Patentee after: Beijing Tianyi good high-tech materials Limited by Share Ltd Address before: 100094 Haidian District, Beijing, Shanghai town, xinxinli village, South Railway 500 meters north. Patentee before: Beijing Tianyi good new materials Limited by Share Ltd |
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| CP03 | Change of name, title or address |