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 PDFInfo
- 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
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- CN
- China
- Prior art keywords
- friction block
- powder metallurgy
- brake pad
- triangle shape
- spherical triangle
- 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
Links
- 238000004663 powder metallurgy Methods 0.000 title claims abstract description 24
- 241000271559 Dromaiidae Species 0.000 title claims abstract description 20
- 241000357293 Leptobrama muelleri Species 0.000 claims abstract description 36
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005299 abrasion Methods 0.000 abstract description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 3
- 238000009510 drug design Methods 0.000 abstract description 2
- 230000008092 positive effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000003723 Smelting Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/78—Features relating to cooling
- F16D65/84—Features relating to cooling for disc brakes
- F16D65/847—Features relating to cooling for disc brakes with open cooling system, e.g. cooled by air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/04—Attachment of linings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/78—Features relating to cooling
- F16D2065/788—Internal cooling channels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/04—Attachment of linings
- F16D2069/0425—Attachment methods or devices
- F16D2069/0433—Connecting elements not integral with the braking member, e.g. bolts, rivets
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
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
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.
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 |
Family
ID=68031326
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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| CN (1) | CN110296167A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111059182A (en) * | 2019-12-27 | 2020-04-24 | 北京北摩高科摩擦材料股份有限公司 | Improved brake pad for high-speed train |
| 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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| CN104455104A (en) * | 2014-12-17 | 2015-03-25 | 北京天宜上佳新材料有限公司 | Floating type brake pad |
| DE112014000699T5 (en) * | 2013-02-06 | 2015-10-15 | Beijing Tianyishangjia New Material Co., Ltd | In case of rain and snow, applicable floating brake pad |
| CN205025982U (en) * | 2015-08-27 | 2016-02-10 | 北京浦然轨道交通科技有限公司 | Floating whole brake pad |
| CN205371418U (en) * | 2016-01-22 | 2016-07-06 | 上海弗置新材料科技有限公司 | High -speed railway is powder metallurgy brake lining for EMUs |
| CN206377190U (en) * | 2016-12-30 | 2017-08-04 | 北京瑞斯福高新科技股份有限公司 | The kilometer motor vehicle group powder metallurgy brake pad of dovetail steel back integral type speed per hour 160~250 |
| CN109322949A (en) * | 2018-10-10 | 2019-02-12 | 北京瑞斯福高新科技股份有限公司 | A kind of dovetail steel back integral type standard EMU powder metallurgy brake pad |
| CN210715668U (en) * | 2019-07-17 | 2020-06-09 | 中铁隆昌铁路器材有限公司 | Arc triangle-shaped's high-speed powder metallurgy brake lining for EMUs |
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2019
- 2019-07-17 CN CN201910645106.XA patent/CN110296167A/en active Pending
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| DE112014000699T5 (en) * | 2013-02-06 | 2015-10-15 | Beijing Tianyishangjia New Material Co., Ltd | In case of rain and snow, applicable floating brake pad |
| CN104455104A (en) * | 2014-12-17 | 2015-03-25 | 北京天宜上佳新材料有限公司 | Floating type brake pad |
| CN205025982U (en) * | 2015-08-27 | 2016-02-10 | 北京浦然轨道交通科技有限公司 | Floating whole brake pad |
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| CN210715668U (en) * | 2019-07-17 | 2020-06-09 | 中铁隆昌铁路器材有限公司 | Arc triangle-shaped's high-speed powder metallurgy brake lining for EMUs |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111059182A (en) * | 2019-12-27 | 2020-04-24 | 北京北摩高科摩擦材料股份有限公司 | Improved brake pad for high-speed train |
| 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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