CN110296167A - A kind of high-speed EMUs powder metallurgy brake pad of spherical triangle shape - Google Patents

A kind of high-speed EMUs powder metallurgy brake pad of spherical triangle shape Download PDF

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Publication number
CN110296167A
CN110296167A CN201910645106.XA CN201910645106A CN110296167A CN 110296167 A CN110296167 A CN 110296167A CN 201910645106 A CN201910645106 A CN 201910645106A CN 110296167 A CN110296167 A CN 110296167A
Authority
CN
China
Prior art keywords
friction block
steel
powder metallurgy
brake pad
triangle shape
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910645106.XA
Other languages
Chinese (zh)
Inventor
庾正伟
宋川
洪翔
黄杰
刘正华
江庆
田雅萍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Railway Longchang Materials Co Ltd
Original Assignee
China Railway Longchang Materials Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Railway Longchang Materials Co Ltd filed Critical China Railway Longchang Materials Co Ltd
Priority to CN201910645106.XA priority Critical patent/CN110296167A/en
Publication of CN110296167A publication Critical patent/CN110296167A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00Parts or details
    • F16D65/02Braking members; Mounting thereof
    • F16D65/04Bands, shoes or pads; Pivots or supporting members therefor
    • F16D65/092Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00Parts or details
    • F16D65/78Features relating to cooling
    • F16D65/84Features relating to cooling for disc brakes
    • F16D65/847Features relating to cooling for disc brakes with open cooling system, e.g. cooled by air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D69/00Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
    • F16D69/04Attachment of linings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00Parts or details
    • F16D65/78Features relating to cooling
    • F16D2065/788Internal cooling channels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D69/00Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
    • F16D69/04Attachment of linings
    • F16D2069/0425Attachment methods or devices
    • F16D2069/0433Connecting elements not integral with the braking member, e.g. bolts, rivets

Abstract

The invention discloses a kind of high-speed EMUs powder metallurgy brake pads of spherical triangle shape, including steel back and the friction block being arranged in steel back, the friction block is shape of the spherical triangle with straight flange, and arrangement quantity of the friction block on brake lining successively increases from inner ring to outer ring.Compared with prior art, the positive effect of the present invention is: 1, the structure of unique arc triangle Intermediate Gray circular hole, and total lateral area is bigger compared to other structures, and brake temperature can be effectively reduced in good heat dissipation effect;2, other arrangement modes are compared in the reasonable arrangement of friction block position, and more evenly, the consistency of Internal and external cycle friction block abrasion condition is more preferable for the friction piece temperature difference of Internal and external cycle;3, between friction block and steel back gap rational design, solve the problems, such as under bad working environments framework deformation caused by brake temperature is excessively high;4, the design of two straight flanges of friction block and anti-rotation boss effectively limits the rotation of friction block, improves the reliability of friction block in use.

Description

A kind of high-speed EMUs powder metallurgy brake pad of spherical triangle shape
Technical field
The present invention relates to a kind of high-speed EMUs powder metallurgy brake pads of spherical triangle shape.
Background technique
Important component of the powder metallurgy brake pad as motor train unit train braking system influences the safety of motor train unit train operation Property, stability, comfort.With the continuous promotion of motor train unit train operation speed per hour, to powder metallurgy brake pad performance requirements It is continuously improved, following problems often occurs in braking process in powder metallurgy brake pad:
1. the friction temperature on brake lining is high, heat fading accelerates, and frictional behaviour is caused to reduce;
2. the friction piece temperature difference of brake lining Internal and external cycle is big, cause each friction piece abrasion condition difference big;
3. the skeleton of friction block is easily-deformable during long service, lead to brake lining brake fade;
4. friction block rotates in braking process, the frictional behaviour of friction block is influenced, reduces the impact vibration of friction block Dynamic performance.
5. friction block is easy to happen greatly inclination due to brake force in use, cause friction block eccentric wear serious.
Therefore it need to optimize powder metallurgy brake pad structure to solve problem above.
Summary of the invention
The shortcomings that in order to overcome the prior art, the present invention provides a kind of high-speed EMUs powder smeltings of spherical triangle shape Golden brake lining.
The technical scheme adopted by the invention is that: a kind of high-speed EMUs powder metallurgy brake pad of spherical triangle shape, packet The friction block for including steel back and being arranged in steel back, the friction block are shape of the spherical triangle with straight flange, and the friction block is in lock The arrangement quantity of on piece successively increases from inner ring to outer ring.
Further, the friction block is distributed from inner ring to outer ring along camber line in steel back, is divided into 3 layers of arrangement, number of arranging Amount is successively 2,3,4 from inner ring to outer ring.
Further, special-shaped anti-rotation boss, the edge mate of the anti-rotation boss and friction block are set in steel back.
Further, the friction block is suppressed by friction piece and base combination, and each angle of the friction piece is by one The arc-shaped edges that the arc-shaped edges and a radius that radius is 50-55mm are 10-12mm are constituted, and one of angle, which has, to be symmetrical arranged Length be 20-22mm anti-rotation straight flange, be provided centrally with a circular hole in the friction piece.
Further, the diameter of the circular hole is 10-12mm, and the pedestal is interference fitted group by shop bolt and skeleton At.
Further, in the front setting disk spring mounting hole of the steel back, it is arranged in disk spring mounting hole Disk spring the circlip mounting hole concentric with disk spring mounting hole is arranged at the back side of the steel back, in circlip mounting hole Circlip is set, and the shop bolt passes through disk spring and protrudes into circlip mounting hole, the circlip on the circlip and shop bolt Card slot cooperation, friction block is fixed in steel back.
Further, the disk spring installs hole depth 1mm-2mm, and the circlip installs hole depth 4-5mm.
Further, spherical surface is equipped on the skeleton, the spherical surface is contacted with the inner ring of disk spring, the skeleton There is flying height between steel back.
Further, the radius of the spherical surface is 11-13mm, is highly 4-6mm.
Further, the flying height is 0.8-1.2mm.
Compared with prior art, the positive effect of the present invention is:
1, the structure of unique arc triangle Intermediate Gray circular hole, total lateral area are bigger compared to other structures, good heat dissipation effect, energy Brake temperature is effectively reduced;
2, the reasonable arrangement of friction block position, compares other arrangement modes, and the friction piece temperature difference of Internal and external cycle is more evenly, interior The consistency of outer ring friction block abrasion condition is more preferable;
3, between friction block and steel back gap rational design, solve brake temperature under bad working environments it is excessively high caused by bone Frame problem on deformation;
4, the design of two straight flanges of friction block and anti-rotation boss effectively limits the rotation of friction block, improves friction block Reliability in use.
5, high-speed EMUs of the invention is good with powder metallurgy brake pad using effect, and the service life is long.
Detailed description of the invention
Examples of the present invention will be described by way of reference to the accompanying drawings, in which:
Fig. 1 is the structural schematic diagram of the high-speed EMUs powder metallurgy brake pad of spherical triangle shape of the invention;
Fig. 2 is the structural schematic diagram of friction block of the invention;
Fig. 3 is the structural schematic diagram of friction block pedestal of the invention;
Fig. 4 is the A-A cross-sectional view of steel back of the invention;
Fig. 5 is the top view of the high-speed EMUs powder metallurgy brake pad of spherical triangle shape of the invention;
Fig. 6 is the structural schematic diagram of friction piece of the invention;
Fig. 7 is the structural schematic diagram of shop bolt of the invention;
Fig. 8 is the structural schematic diagram of skeleton of the invention.
Specific embodiment
A kind of high-speed EMUs powder metallurgy brake pad of spherical triangle shape, as shown in Figures 1 to 8, comprising: steel back 1, card Spring 2, disk spring 3, friction block 4, friction piece 5, pedestal 6, shop bolt 7, skeleton 8, circlip mounting hole 9, disk spring installation Hole 10, anti-rotation boss 11, anti-rotation boss 12, circular hole 13, circlip card slot 14, spherical surface 15 etc..Wherein:
As shown in Figure 1, bullet train powder metallurgy brake pad of the invention is by steel back 1, multiple circlips 2, multiple dish-shaped bullets Spring 3 and multiple friction blocks 4 form.
As shown in Figure 4 and Figure 5, circlip mounting hole 9, disk spring mounting hole 10, anti-rotation boss are equipped in the steel back 1 11, anti-rotation boss 12.Disk spring mounting hole 10 is the circular counter bore of depth 1mm-2mm, and steel back 1 is arranged in close to friction block 4 On one side;Circlip mounting hole 9 is the circular counter bore of depth 4-5mm, and the back side of disk spring mounting hole 10 is arranged in, and is pacified with disk spring It is concentric to fill hole 10;Friction block 4 is distributed from inner ring to outer ring along camber line in steel back 1, is divided into 3 layers of arrangement, and quantity of arranging is from inner ring It is successively 2,3,4 to outer ring;Anti-rotation boss 11 and anti-rotation boss 12 are equipped in steel back 1, respectively with the edge of 4 friction blocks 4 (as shown in Figure 5 and Figure 6, two sides of the anti-rotation boss 11 are anti-with friction piece respectively for cooperation control its amount of spin The arc triangle for turning straight flange and another friction piece contacts;Two sides of the anti-rotation boss 12 are anti-with two friction pieces respectively Turn straight flange contact), remaining friction block 4 controls its amount of spin by mutual anti-rotation straight flange cooperation.
It is formed as shown in Fig. 2, the friction block 4 is combined compacting by friction piece 5 with pedestal 6.
As shown in figure 3, pedestal 6 is made of shop bolt 7 and the interference fit of skeleton 8.
As shown in fig. 6, arc-shaped edges R1 of the friction piece 5 by 3 radius 50-55mm, 3 radius 10-12mm arc-shaped edges R2,2 The anti-rotation straight flange L1 of length 20-22mm, 1 diameter 10-12mm center hole 12 form.This special spherical triangle band The structure of two anti-rotation straight flanges ensure that the lateral area of friction piece maximizes, improve the thermal diffusivity of friction piece.Meanwhile two The design of anti-rotation straight flange also can control the rotation of friction piece.
As shown in fig. 7, shop bolt 7 is equipped with circlip card slot 14.
As shown in figure 8, skeleton 8 is equipped with the spherical surface 15 of radius 11-13mm height 4-6mm, spherical surface 15 and dish when use The inner ring of spring 3 contacts, this assembly method contacted by spherical surface with disk spring, floating when friction block braking may be implemented Dynamic adjustment effect, avoids friction block from friction phenomenon caused by inclination occur.Skeleton 8 and the flying height of steel back 1 are 0.8- 1.2mm, in braking process, when floating regulated quantity is equal to the flying height of skeleton 8 and steel back 1, skeleton 8 and steel back 1 are formed and are connect Touching, skeleton is supported by steel back at this time, can solve framework deformation problem.
When assembling, disk spring 3 is placed in the disk spring mounting hole 10 of steel back 1, friction block 4 is placed on disk spring 3 On, the shop bolt 7 of friction block 4 passes through disk spring 3 and reaches in the circlip mounting hole 9 at 1 back side of steel back, puts circlip 2 into steel Cooperate in the circlip mounting hole 9 of back 1 with the circlip card slot 14 on shop bolt 7, friction block 4 is fixed in steel back 1.
The operation principle of the present invention is that:
1, friction block 4 structure design of the unique spherical triangle of the present invention with anti-rotation straight flange, with other common friction blocks Structure is compared, and the lateral area of friction piece is bigger, and thermal diffusivity is more preferable.And the design of 5 center band circular hole 13 of friction piece, it is also beneficial to rub The heat dissipation and chip removal of rub body 5 efficiently solve the problems, such as that friction temperature is excessively high;
2, the different feature of linear velocity is braked according to brake lining Internal and external cycle rubbing surface, the arrangement of friction block rationally set Meter, the arrangement quantity from inner ring to outer ring friction block 4 successively increase, and so that the friction block of Internal and external cycle is heated more balanced, effectively solve The certainly big problem of the friction piece temperature difference of Internal and external cycle;
3, design is optimized to the flying height between friction block skeleton 8, disk spring 3 and steel back 1 in the present invention, increases Add steel back to the supportive of friction block skeleton.When brake lining brakes stress, disk spring stress deformation floats, friction block skeleton It is supported by steel back, solves the problems, such as framework deformation;
4, the friction block structure design of the unique two anti-rotation straight flanges of spherical triangle band of the present invention and anti-rotation boss 11, 12 designs effectively limit rotation of the friction block 4 in braking process, solve the problems, such as friction block rotation;
5, the design that the present invention is contacted using the spherical surface 15 of friction block skeleton 8 with disk spring 3, can enable friction block 4 exist Float in a certain range, achieve the effect that automatically adjust 4 working face of friction block, enable 4 working face of friction block preferably with braking Disk fitting, effectively solves the problems, such as 4 eccentric wear of friction block.

Claims (10)

1. a kind of high-speed EMUs powder metallurgy brake pad of spherical triangle shape, it is characterised in that: including steel back and be arranged in steel The friction block of back, the friction block be shape of the spherical triangle with straight flange, arrangement quantity of the friction block on brake lining from Inner ring successively increases to outer ring.
2. a kind of high-speed EMUs powder metallurgy brake pad of spherical triangle shape according to claim 1, it is characterised in that: The friction block is distributed from inner ring to outer ring along camber line in steel back, is divided into 3 layers of arrangement, arrangement quantity from inner ring to outer ring successively It is 2,3,4.
3. a kind of high-speed EMUs powder metallurgy brake pad of spherical triangle shape according to claim 1, it is characterised in that: Special-shaped anti-rotation boss, the edge mate of the anti-rotation boss and friction block are set in steel back.
4. a kind of high-speed EMUs powder metallurgy brake pad of spherical triangle shape according to claim 1, it is characterised in that: The friction block is suppressed by friction piece and base combination, and each angle of the friction piece is 50-55mm's by a radius The arc-shaped edges that arc-shaped edges and a radius are 10-12mm are constituted, and it is 20-22mm's that one of angle, which has symmetrically arranged length, Anti-rotation straight flange is provided centrally with a circular hole in the friction piece.
5. a kind of high-speed EMUs powder metallurgy brake pad of spherical triangle shape according to claim 4, it is characterised in that: The diameter of the circular hole is 10-12mm, and the pedestal is made of shop bolt and skeleton interference fit.
6. a kind of high-speed EMUs powder metallurgy brake pad of spherical triangle shape according to claim 5, it is characterised in that: In the front setting disk spring mounting hole of the steel back, disk spring is set in disk spring mounting hole, in the steel back The back side circlip mounting hole concentric with disk spring mounting hole is set, circlip, the positioning pin are set in circlip mounting hole Nail protrudes into circlip mounting hole across disk spring, and the circlip card slot on the circlip and shop bolt cooperates, and friction block is consolidated It is scheduled in steel back.
7. a kind of high-speed EMUs powder metallurgy brake pad of spherical triangle shape according to claim 6, it is characterised in that: The disk spring installs hole depth 1mm-2mm, and the circlip installs hole depth 4-5mm.
8. a kind of high-speed EMUs powder metallurgy brake pad of spherical triangle shape according to claim 6, it is characterised in that: Spherical surface is equipped on the skeleton, the spherical surface is contacted with the inner ring of disk spring, is had between the skeleton and steel back and is floated Gap.
9. a kind of high-speed EMUs powder metallurgy brake pad of spherical triangle shape according to claim 8, it is characterised in that: The radius of the spherical surface is 11-13mm, is highly 4-6mm.
10. a kind of high-speed EMUs powder metallurgy brake pad of spherical triangle shape according to claim 8, feature exist In: the flying height is 0.8-1.2mm.
CN201910645106.XA 2019-07-17 2019-07-17 A kind of high-speed EMUs powder metallurgy brake pad of spherical triangle shape Pending CN110296167A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910645106.XA CN110296167A (en) 2019-07-17 2019-07-17 A kind of high-speed EMUs powder metallurgy brake pad of spherical triangle shape

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910645106.XA CN110296167A (en) 2019-07-17 2019-07-17 A kind of high-speed EMUs powder metallurgy brake pad of spherical triangle shape

Publications (1)

Publication Number Publication Date
CN110296167A true CN110296167A (en) 2019-10-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910645106.XA Pending CN110296167A (en) 2019-07-17 2019-07-17 A kind of high-speed EMUs powder metallurgy brake pad of spherical triangle shape

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111677791A (en) * 2020-06-18 2020-09-18 沈阳远程摩擦密封材料有限公司 Carbon ceramic material brake pad for 200KMh speed grade power concentrated motor vehicle
CN113564406A (en) * 2021-06-23 2021-10-29 中铁隆昌铁路器材有限公司 High-melting-point alloy reinforced copper-based powder metallurgy friction material and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111677791A (en) * 2020-06-18 2020-09-18 沈阳远程摩擦密封材料有限公司 Carbon ceramic material brake pad for 200KMh speed grade power concentrated motor vehicle
CN113564406A (en) * 2021-06-23 2021-10-29 中铁隆昌铁路器材有限公司 High-melting-point alloy reinforced copper-based powder metallurgy friction material and preparation method thereof

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