CN108425975A - A kind of middle low speed EMU powder metallurgy brake pad and its installation method - Google Patents
A kind of middle low speed EMU powder metallurgy brake pad and its installation method Download PDFInfo
- Publication number
- CN108425975A CN108425975A CN201810275854.9A CN201810275854A CN108425975A CN 108425975 A CN108425975 A CN 108425975A CN 201810275854 A CN201810275854 A CN 201810275854A CN 108425975 A CN108425975 A CN 108425975A
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- China
- Prior art keywords
- steel back
- swallow
- small steel
- tail form
- small
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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
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/04—Attachment of linings
- F16D69/0408—Attachment of linings specially adapted for plane linings
Abstract
The invention discloses a kind of middle low speed EMU powder metallurgy brake pad and its installation methods, metallurgical brake lining includes the swallow-tail form steel back and friction component by rivet, the friction component is the small steel back being sintered into one and friction piece, on the small centrally disposed intermediate ectosphere convex surface of steel back, it is both provided with positioning ball convex surface and positioning column on three tops of small steel back, the friction piece setting is in small steel back upper surface and identical as small steel back shape；It is provided in the swallow-tail form steel back for the positioning column interference of the small steel back through-hole that is located by connecting entered, the center spherical-concave-surface positioning being bonded with the positioning ball convex surface of small steel back spherical concave surface, be bonded with the intermediate ectosphere convex surface of small steel back.Structure of the invention is more other to have carried out great optimization in brake lining height, and the brake lining device of design can meet its installation requirement；Brake lining device increases effective contact area by spherical surface, solves the momentary shear power that brake lining bears to generate in braking process.
Description
Technical field
The present invention relates to a kind of middle low speed EMU powder metallurgy brake pad and its installation methods.
Background technology
With the raising of railway construction ability, quality, railway mileage was significantly increased in recent years.(speed is more than at a high speed
250KM/h) railway transport of passengers greatly solves the problems, such as the long-distance trip of the people less since speed is fast, stops website.Currently,
The characteristics of general speed train still bears the passenger traffic task of long range, and big small site is stopped, determines that the mission of passenger traffic is mainly inclined
To in meeting the short-range trip of the people.With the raising of national economic strength, people's improvement of living standard is right
While safety concerns high request, ride comfort is similarly important.
Middle low speed motor-car (speed≤160KM/h) gradually replaces general iron passenger traffic, meets the travel requirement of the people：Safety
Property, comfort, economy etc..Safety is required as primary, and the braking system of middle low speed motor-car is exactly primarily to solve the problems, such as it
One, and the effect of brake lining is also unquestionable in braking system.Continuous development and powder metallurgy in view of PM technique rub
Stabilization of the rub body on high speed motor car, it is reliable use, such brake lining friction piece continues to continue to use powder metallurgy forming.For locomotive system
It makes factory's braking system and proposes new demand to brake lining device, installation region proposes the height of brake lining new requirement total height control
System is in 30 (+0 ,+1) mm and to ensure the effective wear height 19.5mm of friction piece.Use at present be Introduced From Abroad assembling side
Formula height is all higher than requirement height.
Invention content
In order to overcome the disadvantages mentioned above of the prior art, the present invention provides a kind of middle low speed EMU powder metallurgy brake pads
And its installation method, new brake lining device height can be met, while it is uniform in new equipment to solve brake lining friction piece again
The problems such as promptness that radiates in braking, friction piece uniform wear, braking process.
The technical solution adopted by the present invention to solve the technical problems is：A kind of middle low speed EMU powder metallurgy lock
Piece, includes swallow-tail form steel back and friction component by rivet, the friction component be the small steel back being sintered into one and
Friction piece, on the small centrally disposed intermediate ectosphere convex surface of steel back, three tops of small steel back be both provided with positioning ball convex surface and
Positioning column, friction piece setting is in small steel back upper surface and identical as small steel back shape；It is arranged in the swallow-tail form steel back
Have for the positioning column interference through-hole that is located by connecting entered of small steel back, the positioning spherical female being bonded with the positioning ball convex surface of small steel back
Face, the center spherical-concave-surface being bonded with the intermediate ectosphere convex surface of small steel back.
The present invention also provides a kind of middle low speed EMU powder metallurgy brake pad installation method, by small steel back be pressed into
The friction piece of type is integrated by sinter molding, and the part stress generated in sintering process positions load by three friction pieces
Hole is embedded in small steel back, forms friction component；The friction component enters swallow-tail form steel by the positioning column interference in small steel back
Being located by connecting in through-hole for the back of the body forms 3 points of limits, until the positioning spherical female on positioning the ball convex surface and swallow-tail form steel back of small steel back
Face paste is closed, the intermediate ectosphere convex surface of small steel back fits into only with the center spherical-concave-surface of swallow-tail form steel back；By the thin axis of the rivet of rivet
Pass sequentially through the reserved centre bore of friction piece, the riveting through holes of small steel back connects through-hole with the center of swallow-tail form steel back, up to riveting
The countersunk head of nail and the intermediate spherical-concave-surface of small steel back fit into only；The thin axis of the rivet of rivet is riveted to the riveting slot of swallow-tail form steel back
In, and be paved with riveting slot and form riveted joint.
Compared with prior art, the positive effect of the present invention is：Low speed EMU powder metallurgy brake pad passes through right in this
The size of restricted clearance confirms that such apparatus structure is more other to have carried out great optimization, the brake lining of design in brake lining height
Device can meet its installation requirement；Brake lining device increases effective contact area by spherical surface, solves brake lining and bears to brake
The momentary shear power generated in the process.Specific manifestation is as follows：
The section of the brake pad is Lay Lip river triangle, three equal arc transitions of endpoint.Friction piece distribution is revolved along steel back
Turn direction to be circular layout；The swallow-tail form steel back be integrally formed casting and forming finishing；The brake pad is with 3 fillets
The Lay Lip river triangle of end transition, and 1 mounting hole is provided on each brake pad, another side there are three protrusion as with steel back
The limit point of cooperation.The brake pad of powder metallurgy brake pad uses Lay Lip river triangle as a result, its size can more meet brake lining steel back,
Obtain more favorable frictional contact surface.Brake pad is in the arrangement of steel back according to the steel back uniform plane of brake lining arrangement, the cloth
There is larger gap between the brake lining set, simultaneously because gap distribution is continuous, the brake lining friction piece structure in braking process
Stability is more preferable, and evenly, thermal diffusivity is more preferable for abrasion, the drawbacks of can effectively avoid brake lining.
Description of the drawings
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein：
Fig. 1 is the structural schematic diagram of low speed EMU powder metallurgy brake pad in this；
Fig. 2 is the side view of low speed EMU powder metallurgy brake pad in this；
Fig. 3 is the schematic rear view of Fig. 1；
Fig. 4 is the structural schematic diagram of component-coattail board steel back of low speed EMU powder metallurgy brake pad in this
Fig. 5 is the A-A sectional views of Fig. 4；
Fig. 6 is the structural schematic diagram of the small steel back of component-of low speed EMU powder metallurgy brake pad in this；
Fig. 7 is the B-B views of Fig. 6；
Fig. 8 is the structural schematic diagram of the friction piece assembly of low speed EMU powder metallurgy brake pad in this；
Fig. 9 is the structural schematic diagram of component-rivet of low speed EMU powder metallurgy brake pad in this；
Figure 10 is low speed EMU powder metallurgy brake pad Fig. 3 in this about rivet C-C sectional views after molding.
Specific implementation mode
A kind of middle low speed EMU powder metallurgy brake pad and its installation method, as shown in Figures 1 to 10, wherein：Fig. 1-
Fig. 3 is front view, side view and the rearview of brake lining structure and morphology.Mainly include one piece of swallow-tail form steel back 1 shown in Fig. 4,
Small steel back 2 shown in Fig. 8 is sintered friction component (totally 5), the rivet shown in Fig. 94 (totally 5) being integrated with friction piece 3.
The structure of swallow-tail form steel back 1 is as shown in Figure 4 and Figure 5, including：The non-brake connection inserting surface astrosphere of swallow-tail form steel back
(recessed) face 11, the non-brake connection inserting surface center connection through-hole 12 of swallow-tail form steel back, riveting slot 13, the non-brake company of swallow-tail form steel back
It connects spherical (recessed) face 14 of inserting surface positioning and the non-brake connection inserting surface of swallow-tail form steel back is located by connecting through-hole 15.
The structure of small steel back is as shown in Figure 6 and Figure 7, including：Ectosphere (convex) face 21, the riveting of small steel back centre among small steel back
Through-hole 22, small steel back intermediate (recessed) face 23, small steel back positioning ball (convex) face 24, small steel back positioning column 25 and friction piece positioning are held
Power hole 26.
The structure of friction piece assembly is as shown in figure 8, include：Determined by three of compression moulding by powder metallurgy friction block
Position protrusion is with three location hole physical connections of small steel back then by being sintered into entirety.
The structure of rivet is as shown in figure 9, include：The thin axis 41 of rivet and countersunk head 42.
Small steel back 2 and the friction piece 3 of compression moulding are integrated by sinter molding, and the part generated in sintering process is answered
Power positions force-bearing hole 26 by three friction pieces and is embedded in small steel back 2, forms friction component such as Fig. 8.The friction component passes through
Small steel back 2 first enters the non-brake connection of swallow-tail form steel back with swallow-tail form steel back 1 by small 25 interference of steel back positioning column in small steel back 2
Inserting surface, which is located by connecting in through-hole 15, forms 3 points of limits, until small steel back positioning ball (convex) face 24 is non-brake with swallow-tail form steel back
Connect the tangent fitting of spherical 14 spherical surfaces of (recessed) face of inserting surface positioning, small steel back centre ectosphere (convex) face 21 and the non-system of swallow-tail form steel back
Until the dynamic connection 11 tangent fitting of spherical surface of inserting surface astrosphere (recessed) face.The thin axis 41 of rivet of rivet 4 is reserved by friction piece
Centre bore is through riveting through holes 22 among the small steel back in small steel back 2 and the non-brake connection of swallow-tail form steel back in swallow-tail form steel back 1
Inserting surface center connects through-hole 12, and the countersunk head 42 in rivet 4 is fitted into small steel back intermediate (recessed) face 23 in small steel back 2
Only, the thin axis of the rivet of rivet 4 41 is riveted in the riveting slot 13 of swallow-tail form steel back 1 using special equipment, is paved with completely
It forms riveted joint 44 and height is close to swallow-tail form steel back plane but no more than riveting 13 depth of slot, as shown in Figure 10.Periphery three
A non-brake connection inserting surface of swallow-tail form steel back is located by connecting through-hole 15 around the formation of riveting through holes 22 positioning among small steel back, protects
The component that card friction piece 3 is formed with small steel back 2 does not rotate in swallow-tail form steel back 1.
The friction component as shown in figure 8, including the setting of a tool small steel back 2 and one small steel back upper surface and with it is small
The identical friction piece of steel back shape 3；The small steel back 2 is provided centrally with riveting through holes 22 among a small steel back, in the friction
Body skeleton three top as shown in FIG. 6 is both provided with small steel back positioning ball (convex) face 24 of spherical surface boss and small steel back positioning column 25.
The friction piece centre bore is concentric with the small steel back reverse side boss hole of the friction piece and penetrates through, and is integrated by sinter molding.
The dovetail steel back machines integrated molding again using forging as shown in Figure 4：It is butterfly platform on one side, another side is
5 spherical concave surfaces are provided with by certain requirement, are provided with the ball of 3 undersizeds by certain position requirement around each spherical concave surface
Shape concave surface.
The small steel back is as shown in fig. 6, the stamped one-pass molding of this product, copper coating.It is intermediate on one side to be provided with one for one
The through-hole being sized, this face and the powder mass sinter molding through die cast are integrated；The position of three arc-shaped transitions of another side
It is equipped with the cylindrical bar of certain size respectively and by spherical convex surface and flat face, the spherical boss of centre position setting is by another
The through-hole in face extends.
3 cylinders between each brake lining friction piece and steel back first by small steel back close to arc-shaped transition fix its position
It sets, fixation is then riveted by centre position by rivet, after molding as shown in Figure 1.
Claims (10)
1. a kind of middle low speed EMU powder metallurgy brake pad, it is characterised in that：It include the swallow-tail form steel back by rivet
And friction component, the friction component is the small steel back being sintered into one and friction piece, in the small centrally disposed centre of steel back
Ectosphere convex surface is both provided with positioning ball convex surface and positioning column on three tops of small steel back, and the friction piece is arranged in small steel back
Surface and identical as small steel back shape；The positioning entered for the positioning column interference of small steel back is provided in the swallow-tail form steel back
Connection through-hole, be bonded with the positioning ball convex surface of small steel back position spherical shape concave surface, be bonded with the intermediate ectosphere convex surface of small steel back
Center spherical-concave-surface.
2. a kind of middle low speed EMU powder metallurgy brake pad according to claim 1, it is characterised in that：In the small steel
Centrally disposed riveting through holes are carried on the back, the another side and riveting through holes corresponding position on intermediate ectosphere convex surface are provided with intermediate spherical-concave-surface,
Center connection through-hole corresponding with the riveting through holes of small steel back is provided in the swallow-tail form steel back；The rivet of the rivet is thin
The riveting through holes that axis passes sequentially through the centre bore, small steel back reserved on friction piece connect through-hole with the center of swallow-tail form steel back, institute
The intermediate spherical-concave-surface of the countersunk head and small steel back of stating rivet is bonded.
3. a kind of middle low speed EMU powder metallurgy brake pad according to claim 2, it is characterised in that：The rivet
The thin axis of rivet passes through the center connection through-hole of swallow-tail form steel back 1 to be riveted in the riveting slot of swallow-tail form steel back, is paved with riveting completely
Slot forms riveted joint.
4. a kind of middle low speed EMU powder metallurgy brake pad according to claim 3, it is characterised in that：The riveted joint
Height is close to swallow-tail form steel back plane but no more than riveting groove depth.
5. a kind of middle low speed EMU powder metallurgy brake pad according to claim 1, it is characterised in that：The swallow-tail form
Steel back is integrally formed to machine again and be made using forging.
6. a kind of middle low speed EMU powder metallurgy brake pad according to claim 1, it is characterised in that：The small steel back
Stamped one-pass molding, copper coating.
7. a kind of middle low speed EMU powder metallurgy brake pad according to claim 1, it is characterised in that：The brake pad
Section be tool there are three end round-corner transition Lay Lip river triangle.
8. a kind of middle low speed EMU powder metallurgy brake pad installation method, it is characterised in that：By small steel back and compression moulding
Friction piece is integrated by sinter molding, and the part stress generated in sintering process is embedding by three friction pieces positioning force-bearing holes
Enter in small steel back, forms friction component；The friction component enters swallow-tail form steel back by the positioning column interference in small steel back
It is located by connecting in through-hole and forms 3 points of limits, until the positioning spherical female face paste on positioning the ball convex surface and swallow-tail form steel back of small steel back
It closes, the intermediate ectosphere convex surface of small steel back fits into only with the center spherical-concave-surface of swallow-tail form steel back；Successively by the thin axis of the rivet of rivet
The riveting through holes of the centre bore, small steel back reserved by friction piece connect through-hole with the center of swallow-tail form steel back, until rivet
Countersunk head and the intermediate spherical-concave-surface of small steel back fit into only；The thin axis of the rivet of rivet is riveted in the riveting slot of swallow-tail form steel back,
And it is paved with riveting slot and forms riveted joint.
9. a kind of middle low speed EMU powder metallurgy brake pad installation method according to claim 8, it is characterised in that：Institute
State three of swallow-tail form steel back riveting through holes of the through-holes among small steel backs that are located by connecting and form positioning, it is ensured that friction piece with it is small
The friction component that steel back is formed does not rotate in swallow-tail form steel back.
10. a kind of middle low speed EMU powder metallurgy brake pad installation method according to claim 8, it is characterised in that：
The friction component is circular layout along the direction of rotation of swallow-tail form steel back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810275854.9A CN108425975A (en) | 2018-03-30 | 2018-03-30 | A kind of middle low speed EMU powder metallurgy brake pad and its installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810275854.9A CN108425975A (en) | 2018-03-30 | 2018-03-30 | A kind of middle low speed EMU powder metallurgy brake pad and its installation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108425975A true CN108425975A (en) | 2018-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810275854.9A Pending CN108425975A (en) | 2018-03-30 | 2018-03-30 | A kind of middle low speed EMU powder metallurgy brake pad and its installation method |
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| CN (1) | CN108425975A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268412A (en) * | 2018-09-28 | 2019-01-25 | 贵州新安航空机械有限责任公司 | Low abrasion brake lining brake block structure |
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| CN101493127A (en) * | 2008-10-31 | 2009-07-29 | 贵州新安航空机械有限责任公司 | Copper-based powder metallurgy high speed brake lining |
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| EP2703684A1 (en) * | 2012-08-31 | 2014-03-05 | Dawin Friction Co., Ltd. | Brake pad |
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| CN107420465A (en) * | 2017-04-24 | 2017-12-01 | 北京优材百慕航空器材有限公司 | Overall dovetail template train brake plate |
| CN206860731U (en) * | 2017-06-27 | 2018-01-09 | 北京天宜上佳新材料股份有限公司 | A kind of friction piece steel back mounting structure and there is its brake pad |
| CN208236963U (en) * | 2018-03-30 | 2018-12-14 | 中铁隆昌铁路器材有限公司 | A kind of middle low speed EMU powder metallurgy brake pad |
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2018
- 2018-03-30 CN CN201810275854.9A patent/CN108425975A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080257664A1 (en) * | 2005-11-24 | 2008-10-23 | John David Holme | Pad Assembly For Use in a Disc Brake |
| CN101493127A (en) * | 2008-10-31 | 2009-07-29 | 贵州新安航空机械有限责任公司 | Copper-based powder metallurgy high speed brake lining |
| CN102537158A (en) * | 2010-12-22 | 2012-07-04 | 吴佩芳 | Mounting structure for powder metallurgy brake pad of high-speed train |
| EP2703684A1 (en) * | 2012-08-31 | 2014-03-05 | Dawin Friction Co., Ltd. | Brake pad |
| CN204226509U (en) * | 2014-07-10 | 2015-03-25 | 北京瑞斯福高新科技股份有限公司 | A kind of Novel powder metallurgy brake lining |
| CN206539626U (en) * | 2016-12-26 | 2017-10-03 | 常州中车铁马科技实业有限公司 | A kind of train brake plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268412A (en) * | 2018-09-28 | 2019-01-25 | 贵州新安航空机械有限责任公司 | Low abrasion brake lining brake block structure |
| CN109268412B (en) * | 2018-09-28 | 2023-10-13 | 贵州新安航空机械有限责任公司 | Low-abrasion brake pad and brake block structure |
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