CN204610642U - A kind of high-speed track passenger car powder metallurgy brake pad - Google Patents

A kind of high-speed track passenger car powder metallurgy brake pad Download PDF

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Publication number
CN204610642U
CN204610642U CN201520311923.9U CN201520311923U CN204610642U CN 204610642 U CN204610642 U CN 204610642U CN 201520311923 U CN201520311923 U CN 201520311923U CN 204610642 U CN204610642 U CN 204610642U
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China
Prior art keywords
brake pad
powder metallurgy
metal backing
backing
passenger car
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CN201520311923.9U
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Chinese (zh)
Inventor
邹怀森
苏星宇
郭明海
周建华
陈玉清
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BEIJING RAILWAY STAR FORTUNE HIGH-TECH Co Ltd
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BEIJING RAILWAY STAR FORTUNE HIGH-TECH Co Ltd
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Priority to CN201520311923.9U priority Critical patent/CN204610642U/en
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Abstract

The utility model discloses a kind of high-speed track passenger car powder metallurgy brake pad, described powder metallurgy brake pad comprises steel backing, brake pad, triangle holder and butterfly jump ring, described brake pad is made up of metal backing and friction piece, described metal backing is made up of centrepin and metal backing plane, and described friction piece is made up of matrix constituent element, lubricant component and friction component; Described triangle holder is located by locating stud, and carries out sphere laminating with the convex spherical on described brake pad and the concave spherical surface on metal backing respectively; Described brake pad is designed to regular hexagon or partially hexagonal shape, and engages each other and be arranged in described triangle holder, is directly fixed with described steel backing by the centrepin on described metal backing and described butterfly jump ring.This powder metallurgy brake pad can effectively regulate brake lining deformation, and abrasion is even, and braking is stable, long service life, and the feature of convenient disassembly when there is replacing.

Description

A kind of high-speed track passenger car powder metallurgy brake pad
Technical field
The utility model relates to railway equipment technical field, particularly relates to a kind of high-speed track passenger car powder metallurgy brake pad.
Background technique
At present, railway is the important infrastructure of country, the main artery of national economy and the popular traffic tool.In order to meet Chinese national economy construction demand, the actual operation EMU of China, in order to ensure EMU safe operation, must possess stable and good braking system.Brake pad is critical component and the easily damaged parts of high-speed train braking system.Along with improving constantly of EMU motion speed, the brake load of train also significantly increases, during braking, the huge kinetic energy produced during train operation will be converted into heat energy by friction by brake lining, so require the abrasion that brake lining has higher mechanical strength, good heat resistance and thermal conductivity, stable frictional behaviour, lower wearing and tearing and reduces wheel.
In order to the supporting technology production domesticization making EMU relevant, recent year scientific research institutions expand brake pad and study widely.In the prior art, powder metallurgy brake pad is primarily of steel backing, brake pad, triangle holder and butterfly jump ring four part composition, but because existing brake lining structural design is unreasonable, under alternating stress and high heat load effect, easily cause brake lining because of uneven generation bending deflection of being heated in causing train to be braked at a high speed, the each friction area of brake pad absorbs energy difference and causes eccentric wear, loosely cause bonding with friction piece of metal backing comes off, brake lining rotates and causes abrasive dust to assemble, the generation of these phenomenons can affect retardation efficiency, reduce brake lining working life, cause handling difficulty simultaneously.
Summary of the invention
The purpose of this utility model is to provide a kind of high-speed track passenger car powder metallurgy brake pad, can effectively regulate brake lining deformation, and abrasion is even, and braking is stable, long service life, and the feature of convenient disassembly when there is replacing.
A kind of high-speed track passenger car powder metallurgy brake pad, described powder metallurgy brake pad comprises steel backing, brake pad, triangle holder and butterfly jump ring, wherein:
Described brake pad is made up of metal backing and friction piece, and described metal backing is made up of centrepin and metal backing plane, and described friction piece is made up of matrix constituent element, lubricant component and friction component;
Described triangle holder is located by locating stud, and carries out sphere laminating with the convex spherical on described brake pad and the concave spherical surface on metal backing respectively;
Described brake pad is designed to regular hexagon or partially hexagonal shape, and engages each other and be arranged in described triangle holder, is directly fixed with described steel backing by the centrepin on described metal backing and described butterfly jump ring.
The technological scheme provided as can be seen from above-mentioned the utility model, this powder metallurgy brake pad can effectively regulate brake lining deformation, and abrasion is even, and braking is stable, long service life, and the feature of convenient disassembly when there is replacing.
Accompanying drawing explanation
In order to be illustrated more clearly in the technological scheme of the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 provides by the utility model embodiment the Facad structure schematic diagram of high-speed track passenger car powder metallurgy brake pad;
Fig. 2 provides by the utility model embodiment the structure schematic diagram of high-speed track passenger car powder metallurgy brake pad;
Fig. 3 provides by the utility model embodiment the structural representation of brake pad;
Fig. 4 provides by the utility model embodiment the structural representation of metal backing;
Fig. 5 provides by the utility model embodiment the structural representation of centrepin;
Fig. 6 provides by the utility model embodiment the structural representation of triangle holder;
Fig. 7 provides by the utility model embodiment the structural representation of butterfly jump ring;
Fig. 8 provides by the utility model embodiment the structural representation of steel backing.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technological scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on embodiment of the present utility model, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to protection domain of the present utility model.
Below in conjunction with accompanying drawing, the utility model embodiment is described in further detail, be illustrated in figure 1 the utility model embodiment the Facad structure schematic diagram of high-speed track passenger car powder metallurgy brake pad is provided; Be illustrated in figure 2 structure schematic diagram, in conjunction with Fig. 1 and 2, this powder metallurgy brake pad includes steel backing 1-1, brake pad 1-2, triangle holder 1-3 and butterfly jump ring 2-1, wherein:
Described brake pad 1-2 is made up of metal backing and friction piece, and described metal backing is made up of centrepin and metal backing plane, and described friction piece is made up of matrix constituent element, lubricant component and friction component; Wherein, described friction piece is specifically formed by mixing, shaping, the high temperature sintering of cold forming by matrix constituent element, lubricant component, friction component; Described metal backing is by centrepin and metal backing plane interference fit, closely nested by punching press;
Described triangle holder 1-3 is located by locating stud, and carries out sphere laminating with the convex spherical on described brake pad 1-2 and the concave spherical surface on metal backing respectively;
Described brake pad 1-2 is designed to regular hexagon or partially hexagonal shape, and engages each other and be arranged on described triangle holder 1-3, is directly fixed with described steel backing 1-1 by the centrepin on described metal backing and described butterfly jump ring 2-1.
Below in conjunction with accompanying drawing, the critical piece in this powder metallurgy brake pad is described, be illustrated in figure 3 the utility model embodiment the structural representation of brake pad is provided; Be illustrated in figure 4 the structural representation of metal backing; Be illustrated in figure 5 the structural representation of centrepin; Be illustrated in figure 6 the structural representation of triangle holder; Be illustrated in figure 7 the structural representation of butterfly jump ring; Be illustrated in figure 8 the structural representation of steel backing, composition graphs 3-8:
First, metal backing Vertical direction is designed with hemisphere convex surface 3-1, and the concave surface 6-1 of the Vertical direction of triangle holder shown in this convex surface and Fig. 6 design fits, and the deformation caused brake lining in effective adjustable brake process, to ensure that brake lining rubbing surface and brake disc are fitted; And the planar section of described metal backing is provided with hollow out, tight with the protrusions match in described friction piece plane.Thus ensure that the metal backing of described brake pad and friction piece can not come off in high-speed friction braking process.
Triangle holder simultaneously is also designed with hemisphere convex surface 6-2 on the direction parallel with steel backing, the concave surface 8-1 that this convex surface and steel backing substantially horizontal design fits, the deformation that can effectively cause brake lining in adjustable brake process equally, there is minute angle difference in plane and the steel backing plane of triangle holder convex spherical homonymy described here, the deformation that this design can effectively cause brake lining in adjustable brake process equally, better controls each brake pad simultaneously and wears away identical in braking process.Be provided with step at the concave surface 6-1 of triangle holder simultaneously, ensure under retardation pressure, the rotation adjustment of brake pad on pallet flexibly.Be provided with locating pin 6-3 at the triangle holder back side, ensure that the rotation of brake pad during braking keeps several angle.
In addition, the friction piece center portion of brake pad is provided with Hexagon through hole, and its expansion that Yin Gaowen produces in braking process can be made to be eased, and the friction piece prevented is heaved, and ensure that the abrasion of friction piece are even.And the edge of friction piece is provided with smooth fillet, thus ensure that friction piece can not come off because of edge effect fragmentation in high-speed friction braking process.
This brake pad is distribution straggly on described steel backing, and reduce brake lining entirety because of the amount of deformation of expanded by heating in braking process, when being also convenient to brake, the abrasive dust of brake pad is discharged in time.Further, described brake pad unit radius friction area and friction radius square proportional in described steel backing plane, the braking energy that brake pad on guarantor unit's area bears is identical, ensure that the abrasion of the brake pad in unit area are identical, effectively can improve brake lining working life.
As shown in Figure 4, the metal backing of described brake pad is provided with some through hole 4-1, the boss be provided with when suppressing with friction piece engages 3-2, effectively enhances the adhesion strength of metal backing and friction piece, thus can not cause coming off because of braking friction when ensureing that described powder metallurgy brake pad is braked.
In addition, as shown in Figure 5, be provided with boss 5-1 in the running shaft direction of centrepin, be embedded in friction piece, effectively prevent the obscission that friction piece occurs under the effect of the shearing force of braking generation at a high speed.Brake pad can with centrepin position for rotating center carries out small rotation above described triangle holder, the position of described centrepin, can ensure in braking process, the moment of torsion relative to rotating center that unit area friction produces is cancelled out each other with the moment of torsion relative to disc centres.
As shown in Figure 7, the inner circle 7-1 of butterfly jump ring, nested closely with the groove 5-2 of centrepin, ensure that brake pad, triangle holder, steel backing three are fixed together by centrepin and butterfly jump ring, be convenient to brake pad wear away limit after change.
As shown in Figure 8, steel backing is bilateral symmetry, and intermediate portion is thinner, and has two place's hollow outs.
It should be noted that the brake pad shape in the utility model only relate to hexagonal structure, allly apply design philosophy of the present utility model and only change other project organization of brake pad shape all in the protection authority of this patent.
In sum, brake lining of the present utility model can effectively regulate brake lining deformation, reduces braking force loss of causing because overcoming distortion, and the feature of convenient disassembly when there is replacing, and this hexagonal brake pad intensity is high, can effectively suppress to wear away block phenomenon in use.
The above; be only the utility model preferably embodiment; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.

Claims (8)

1. a high-speed track passenger car powder metallurgy brake pad, is characterized in that, described powder metallurgy brake pad comprises steel backing, brake pad, triangle holder and butterfly jump ring, wherein:
Described brake pad is made up of metal backing and friction piece, and described metal backing is made up of centrepin and metal backing plane, and described friction piece is made up of matrix constituent element, lubricant component and friction component;
Described triangle holder is located by locating stud, and carries out sphere laminating with the convex spherical on described brake pad and the concave spherical surface on metal backing respectively;
Described brake pad is designed to regular hexagon or partially hexagonal shape, and engages each other and be arranged in described triangle holder, is directly fixed with described steel backing by the centrepin on described metal backing and described butterfly jump ring.
2. high-speed track passenger car powder metallurgy brake pad according to claim 1, is characterized in that,
The Vertical direction of described metal backing is designed with hemisphere convex surface, and the concave spherical surface that this convex surface and described triangle holder Vertical direction design is fitted;
And the planar section of described metal backing is provided with hollow out, tight with the protrusions match in described friction piece plane.
3. high-speed track passenger car powder metallurgy brake pad according to claim 1, is characterized in that,
Described triangle holder is designed with hemisphere convex surface on the direction parallel with described steel backing, and the concave spherical surface that this convex surface and described steel backing substantially horizontal design is fitted.
4. high-speed track passenger car powder metallurgy brake pad according to claim 1, is characterized in that,
The hexagonal shape of described brake pad is arranged between sheet and sheet and is provided with gap;
And the distribution straggly on described steel backing of described brake pad.
5. high-speed track passenger car powder metallurgy brake pad according to claim 1, is characterized in that,
The edge of described friction piece is provided with smooth fillet;
And the center portion of described friction piece is provided with Hexagon through hole.
6. high-speed track passenger car powder metallurgy brake pad according to claim 1, is characterized in that,
Centrepin on described metal backing is provided with projection in running shaft direction, is embedded in described friction piece.
7. high-speed track passenger car powder metallurgy brake pad according to claim 1, is characterized in that,
The metal backing of described brake pad is provided with some through holes, and described friction piece is engaged by through hole with described metal backing, and closely bonds through high temperature.
8. high-speed track passenger car powder metallurgy brake pad according to claim 1, is characterized in that,
Described steel backing is bilateral symmetry, and intermediate portion is thinner, and has two place's hollow outs.
CN201520311923.9U 2015-05-14 2015-05-14 A kind of high-speed track passenger car powder metallurgy brake pad Active CN204610642U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520311923.9U CN204610642U (en) 2015-05-14 2015-05-14 A kind of high-speed track passenger car powder metallurgy brake pad

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520311923.9U CN204610642U (en) 2015-05-14 2015-05-14 A kind of high-speed track passenger car powder metallurgy brake pad

Publications (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107588132A (en) * 2017-08-25 2018-01-16 山东百德瑞轨道交通科技有限公司 A kind of bullet train powder metallurgy brake pad

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107588132A (en) * 2017-08-25 2018-01-16 山东百德瑞轨道交通科技有限公司 A kind of bullet train powder metallurgy brake pad

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