CN208236963U - A kind of middle low speed EMU powder metallurgy brake pad - Google Patents
A kind of middle low speed EMU powder metallurgy brake pad Download PDFInfo
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- CN208236963U CN208236963U CN201820442855.3U CN201820442855U CN208236963U CN 208236963 U CN208236963 U CN 208236963U CN 201820442855 U CN201820442855 U CN 201820442855U CN 208236963 U CN208236963 U CN 208236963U
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- steel back
- small steel
- swallow
- low speed
- powder metallurgy
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Abstract
The utility model discloses a kind of middle low speed EMU powder metallurgy brake pads, swallow-tail form steel back and friction component including passing through rivet, the friction component is the small steel back being sintered into one and friction piece, at the small steel back center, intermediate ectosphere convex surface is set, positioning ball convex surface and positioning column is provided on three tops of small steel back, and 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.The utility model structure is more other to have carried out great optimization in brake lining height, and the brake lining device of design is able to satisfy its installation requirement；Brake lining device increases effective contact area by spherical surface, solves brake lining and bears the momentary shear power generated in braking process.
Description
Technical field
The utility model relates to a kind of middle low speed EMU powder metallurgy brake pads.
Background technique
With the raising of railway construction ability, quality, railway mileage was significantly increased in recent years.(speed is greater than at a high speed
250KM/h) railway transport of passengers greatly solves the problems, such as the long-distance trip of the people since speed is fast, stops website less.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 new requirement total height control to the height of brake lining
System is in 30 (+0 ,+1) mm and to guarantee the effective wear height 19.5mm of friction piece.The currently used assembling side to introduce foreign countries
Formula height is all larger than requirement height.
Summary of the invention
The shortcomings that the utility model is overcome in the prior art provides a kind of middle low speed EMU powder metallurgy lock
Piece had not only been able to satisfy new brake lining device height, but can solve brake lining friction piece in new equipment it is uniform braking, friction piece
The problems such as timeliness that radiates in uniform wear, braking process.
The technical solution of the utility model is: a kind of middle low speed EMU powder metallurgy brake pad, including passes through rivet riveting
The swallow-tail form steel back and friction component connect, the friction component is the small steel back being sintered into one and friction piece, in the small steel
Intermediate ectosphere convex surface is arranged in back center, is provided with positioning ball convex surface and positioning column, the friction piece on three tops of small steel back
Setting is in small steel back upper surface and identical as small steel back shape；The positioning column for small steel back is provided in the swallow-tail form steel back
The centre of the through-hole that is located by connecting, the positioning spherical concave surface and small steel back that are bonded with the positioning ball convex surface of small steel back that interference enters
The center spherical-concave-surface of ectosphere convex surface fitting.
Compared with prior art, the utility model has the advantages that: in this low speed EMU with powder metallurgy brake pad by pair
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 is able to satisfy its installation requirement；Brake lining device increases effective contact area by spherical surface, solves brake lining and bears braking
The momentary shear power generated in the process.Specific manifestation is as follows:
The section of the friction block 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 friction block is with 3 fillets
The Lay Lip river triangle of end transition, and 1 mounting hole is provided on each friction block, another side there are three protrusion as with steel back
The limit point of cooperation.The friction block 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.Friction block is in the arrangement of steel back according to the steel back uniform plane arrangement of brake lining, the cloth
There is biggish gap between the brake lining set, simultaneously because gap distribution is continuous, the brake lining friction piece structure in braking process
The drawbacks of stability is more preferable, and more evenly, thermal diffusivity is more preferable for abrasion, can effectively avoid brake lining.
Detailed description of the invention
The utility model will illustrate by example and with reference to the appended drawing, in which:
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 component-coattail board steel back structural schematic diagram of low speed EMU powder metallurgy brake pad in this
Fig. 5 is the A-A cross-sectional view 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 view 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 component-rivet structural schematic diagram 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 cross-sectional view after molding.
Specific embodiment
A kind of middle low speed EMU powder metallurgy brake pad, as shown in Figures 1 to 10, in which: Fig. 1-Fig. 3 is brake lining structure
Front view, side view and the rearview of pattern.It mainly include one piece of swallow-tail form steel back 1 shown in Fig. 4, small steel shown in Fig. 8
Back 2 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, comprising: 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
Connect that inserting surface positions spherical (recessed) face 14 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, comprising: 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, comprising: is determined by powder metallurgy friction block by three of compression moulding
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, comprising: 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 during the 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 by small 25 interference of steel back positioning column in small steel back 2 with swallow-tail form steel back 1
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
It connects inserting surface and positions the tangent fitting of 14 spherical surfaces of spherical (recessed) face, 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 the rivet of rivet 4 is reserved by friction piece
Centre bore is through the non-brake connection of swallow-tail form steel back in riveting through holes 22 and swallow-tail form steel back 1 among the small steel back in small steel back 2
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 41 of the rivet of rivet 4 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 small steel back centre riveting through holes 22 formation positioning, 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, include a small steel back of tool 2 and a setting small steel back upper surface and with it is small
The identical friction piece 3 of steel back shape；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 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 uses forging to machine integrated molding again as shown in Figure 4: on one side for butterfly platform, 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 of scale cun, 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 passes through spherical convex surface and flat face, the spherical boss of middle 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 middle position by rivet, after molding as shown in Figure 1.
Claims (7)
1. a kind of middle low speed EMU powder metallurgy brake pad, it is characterised in that: the swallow-tail form steel back including passing through rivet
And friction component, the friction component is the small steel back being sintered into one and friction piece, among the small steel back center setting
Ectosphere convex surface is 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
Riveting through holes are arranged in back center, and 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 center connection through-hole that the thin axis of rivet passes through swallow-tail form steel back 1 is 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 is 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 friction piece
Section be tool there are three end round-corner transition Lay Lip river triangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820442855.3U CN208236963U (en) | 2018-03-30 | 2018-03-30 | A kind of middle low speed EMU powder metallurgy brake pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820442855.3U CN208236963U (en) | 2018-03-30 | 2018-03-30 | A kind of middle low speed EMU powder metallurgy brake pad |
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| CN208236963U true CN208236963U (en) | 2018-12-14 |
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| CN201820442855.3U Active CN208236963U (en) | 2018-03-30 | 2018-03-30 | A kind of middle low speed EMU powder metallurgy brake pad |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425975A (en) * | 2018-03-30 | 2018-08-21 | 中铁隆昌铁路器材有限公司 | A kind of middle low speed EMU powder metallurgy brake pad and its installation method |
| CN108425975B (en) * | 2018-03-30 | 2024-05-31 | 中铁隆昌铁路器材有限公司 | Powder metallurgy brake pad for medium-low speed motor train unit and installation method thereof |
-
2018
- 2018-03-30 CN CN201820442855.3U patent/CN208236963U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425975A (en) * | 2018-03-30 | 2018-08-21 | 中铁隆昌铁路器材有限公司 | A kind of middle low speed EMU powder metallurgy brake pad and its installation method |
| CN108425975B (en) * | 2018-03-30 | 2024-05-31 | 中铁隆昌铁路器材有限公司 | Powder metallurgy brake pad for medium-low speed motor train unit and installation method thereof |
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