CN111075864A - Outer wrapping type friction block for high-speed train brake - Google Patents
Outer wrapping type friction block for high-speed train brake Download PDFInfo
- Publication number
- CN111075864A CN111075864A CN201911383594.8A CN201911383594A CN111075864A CN 111075864 A CN111075864 A CN 111075864A CN 201911383594 A CN201911383594 A CN 201911383594A CN 111075864 A CN111075864 A CN 111075864A
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- China
- Prior art keywords
- friction block
- friction
- steel back
- compact
- speed train
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- 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.)
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Classifications
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- 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
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- 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
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- 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
Abstract
The invention belongs to the technical field of train braking, and particularly relates to an externally-wrapped friction block for high-speed train braking, which comprises: the outer wrapping type friction block for the brake of the high-speed train comprises: the friction block steel back bottom plate, the friction block steel back arc claw, a friction block pressed compact, a first through hole and a second through hole; the outer wrapping structure tightly buckles the friction block pressed compact, is firmer, enhances the shearing resistance and the impact resistance between the steel back of the friction block and the bonding surface of the friction material layer, does not have the phenomena of falling off and falling of the friction material layer, and ensures that the brake pad works more safely and reliably.
Description
Technical Field
The invention belongs to the technical field of train braking, and particularly relates to an externally-coated friction block for high-speed train braking.
Background
With the increasing criss-cross of the highway network, the driving safety of the high-speed train is more and more emphasized. In the process of running a train from a high speed to a safe brake and stop running, a braking system is required to generate braking torque to complete braking, wherein a friction block is directly contacted with a wheel, kinetic energy is converted into heat energy through friction and is emitted into air. The performance requirements for the friction block are high. The friction block is generally formed by pressing and sintering a friction block compact and a friction block steel back, wherein the friction block compact and the friction block steel back have mutually corresponding structures. However, since the powder metallurgy friction material contains non-metallic components such as graphite, silicon dioxide and the like, and is not wetted with metal, pores are inevitably formed on an interface between a pressed compact and a steel backing of a friction block in a sintering process, so that the shearing resistance and the impact resistance of a bonding surface of the friction material are poor, the phenomena of falling and block falling of the friction material layer can be caused, and safety risk exists. How to solve the problem that the friction block drops, falls the piece, ensure the quality of brake lining, get rid of the safety risk is the problem that awaits a urgent need to be solved.
The current chinese patent application number is: 201721444056.1, discloses a high-speed train friction block, which comprises a small fan-shaped friction block and a large fan-shaped friction block, and is characterized in that the corresponding central angles of the small fan-shaped friction block and the large fan-shaped friction block are the same, the corresponding central angle of the small fan-shaped friction block is 8.4-9.4 degrees, the upper arc length corresponds to the circle radius of 240-246 mm, the lower arc length corresponds to the circle radius of 185-195 mm, and the distance between the two arc lengths is 50-56 mm; the central angle corresponding to the large fan-shaped friction block is 8.4-9.4 degrees, the upper arc length of the large fan-shaped friction block corresponds to the circle radius of 303-313 mm, the lower arc length of the large fan-shaped friction block corresponds to the circle radius of 246-256 mm, and the distance between the two arc lengths is 55-63 mm. The utility model has the advantages of good stability and large friction area in the using process. But does not provide an outer wrapping type friction block for braking a high-speed train.
Also, for example, the Chinese patent application number is: 201720541018.1, discloses a high speed train powder metallurgy brake pad friction block, which comprises a copper-plated back plate and a friction body, wherein a transition layer is arranged between the copper-plated back plate and the friction body, and the transition layer is completely metallurgically fused with the copper-plated back plate and the friction body respectively; the friction body, the transition layer and the copper-plated back plate are pressed and then sintered to form the high-speed train powder metallurgy brake pad friction block; and the transition layer is formed by mixing and sintering metal powder and copper powder. The friction block can overcome the defect that the back plate and the friction body are separated and easily fall off due to low bonding strength of the back plate and the friction body in the friction block, and greatly prolongs the service life of the high-speed train powder metallurgy brake pad made of the friction block. But also does not provide an outer wrapping type friction block for braking a high-speed train.
Disclosure of Invention
Aiming at the problems of the defects in the prior art, the invention provides an outer wrapping type friction block for braking a high-speed train.
The technical scheme for solving the problems is as follows:
the outer wrapping type friction block for the brake of the high-speed train comprises: the friction block steel back bottom plate, the friction block steel back arc claw, a friction block pressed compact, a first through hole and a second through hole; the friction block steel back bottom plate is characterized in that friction block steel back arc-shaped claws are distributed on one plane of the friction block steel back bottom plate according to each end part by taking the center of the end face as the original point, second through holes vertically penetrate through the friction block steel back bottom plate, first through holes matched with the second through holes vertically penetrate through the friction block pressed compact, and the friction block pressed compact and the friction block steel back bottom plate are formed through pressurization sintering.
Furthermore, 3 second through holes are oppositely formed in the friction block steel back bottom plate, and 3 first through holes are oppositely formed in the friction block pressed compact 3.
Furthermore, each arc-shaped end face of the friction block pressed compact is mutually abutted to the friction block steel back arc-shaped claw.
Furthermore, the compact of the friction block and the steel back bottom plate of the friction block are matched with each other to form a trihedron, the trihedron is provided with 3 side faces which are convex arc faces, and the other 3 side faces are planes.
Further, the axial height of the friction block compact was 26 mm.
Furthermore, the compact of the friction block is a powder metallurgy friction material.
Furthermore, the brake pad is composed of a friction block pressed blank, a friction block steel back arc claw, a friction block steel back bottom plate and a dovetail type brake pad steel back in sequence from top to bottom.
Compared with the prior art, the invention has the beneficial effects that:
1. the friction block steel backing outer wrapping friction block pressed compact with the friction block steel backing arc-shaped claw is adopted to be sintered by pressurization, so that the mechanical bonding strength of the friction block steel backing outer wrapping friction block pressed compact and the friction block steel backing outer wrapping friction block pressed compact are enhanced, the shearing resistance and the impact resistance between the friction block steel backing and the pressed compact are enhanced, the phenomena that a friction material layer falls off and blocks fall off are avoided, the friction block is safer and more reliable in work, and the service life of a brake pad is prolonged.
2. The first through hole and the second through hole through setting up effectively dispel the heat, reduce thermal fatigue risk, and have the effect of discharge abrasive dust, weight reduction.
Drawings
FIG. 1 is a schematic view of an outer wrapping friction block assembly for braking a high-speed train according to the invention;
FIG. 2 is an isometric view of the friction block steel backing of FIG. 1;
FIG. 3 is an isometric view of the friction block compact of FIG. 1;
FIG. 4 is a schematic view of the friction block steel backed arc pawls of FIG. 1;
fig. 5 is a schematic view of the damper blade.
Description of reference numerals: 1-friction block steel back bottom plate, 2-friction block steel back arc claw, 3-friction block pressed compact, 4-first through hole, 5-second through hole, and 6-dovetail type brake pad steel back.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 5, the outer wrapping type friction block for braking of a high-speed train comprises: the friction block steel back base plate 1, the friction block steel back arc-shaped claw 2, a friction block pressed compact 3, a first through hole 4 and a second through hole 5; the friction block steel backing arc-shaped claw 2 is distributed on one plane of the friction block steel backing base plate 1 by taking the end face center as the original point according to each end part, a second through hole 5 vertically penetrates through the friction block steel backing base plate 1, a first through hole 4 matched with the second through hole 5 vertically penetrates through the friction block pressed compact 3, and the friction block pressed compact 3 and the friction block steel backing base plate 1 are formed by pressurization sintering.
Further, as shown in fig. 2 and 3, 3 second through holes 5 are oppositely formed in the friction block steel back base plate 1, and 3 first through holes 4 are oppositely formed in the friction block compact 3.
Furthermore, each arc-shaped end face of the friction block pressed compact 3 is mutually abutted to the friction block steel back arc-shaped claw 2.
Further, the compact 3 of the friction block and the steel back bottom plate 1 of the friction block are matched with each other to form a trihedron, the trihedron is provided with 3 side faces which are convex arc faces, and the other 3 side faces are planes.
Further, the axial height of the friction block compact 3 was 26 mm.
Further, the friction block compact 3 is prepared from a powder metallurgy friction material.
Further, as shown in fig. 5, the brake pad is composed of a friction block pressed compact 3, a friction block steel back arc-shaped claw 2, a friction block steel back bottom plate 1 and a dovetail type brake pad steel back 6 from top to bottom in sequence.
The present invention is not limited to the above-described embodiments, and any variations, modifications, and alterations that may occur to one skilled in the art without departing from the spirit of the invention are intended to be within the scope of the invention.
Claims (7)
1. The utility model provides an outsourcing formula clutch block for high speed train brake which characterized in that includes: the friction block steel back bottom plate, the friction block steel back arc claw, a friction block pressed compact, a first through hole and a second through hole; the friction block steel back bottom plate is characterized in that friction block steel back arc-shaped claws are distributed on one plane of the friction block steel back bottom plate according to each end part by taking the center of the end face as the original point, second through holes vertically penetrate through the friction block steel back bottom plate, first through holes matched with the second through holes vertically penetrate through the friction block pressed compact, and the friction block pressed compact and the friction block steel back bottom plate are formed through pressurization sintering.
2. The externally wrapped friction block for braking of high-speed trains as claimed in claim 1, wherein 3 second through holes are oppositely arranged on the steel backing plate of the friction block, and 3 first through holes are oppositely arranged on the compact of the friction block.
3. The externally wrapped friction pad for a brake of a high speed train as claimed in claim 1, wherein each of the arc-shaped end surfaces of the friction pad compact abuts against the steel-backed arc-shaped claw of the friction pad.
4. The externally wrapped friction block for a brake of a high-speed train according to claim 1, wherein the friction block compact and the friction block steel back base plate are mutually matched to form a trihedron, 3 sides of the trihedron are convex cambered surfaces, and the other 3 sides are planes.
5. The outer covering friction block for a brake of a high speed train as claimed in claim 4, wherein the axial height of the friction block compact is 26 mm.
6. The outer wrapped friction block for high-speed train brakes according to claim 5, wherein the friction block compact is a powder metallurgy friction material.
7. The externally wrapped friction block for braking of the high-speed train as claimed in claim 1, wherein the brake pad is composed of a friction block green compact, a friction block steel back arc claw, a friction block steel back bottom plate and a dovetail type brake pad steel back in sequence from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911383594.8A CN111075864A (en) | 2019-12-27 | 2019-12-27 | Outer wrapping type friction block for high-speed train brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911383594.8A CN111075864A (en) | 2019-12-27 | 2019-12-27 | Outer wrapping type friction block for high-speed train brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111075864A true CN111075864A (en) | 2020-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911383594.8A Pending CN111075864A (en) | 2019-12-27 | 2019-12-27 | Outer wrapping type friction block for high-speed train brake |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113385670A (en) * | 2021-05-06 | 2021-09-14 | 汕头市西北航空科技有限公司 | Sintering tool and sintering method for powder metallurgy brake pad friction block |
-
2019
- 2019-12-27 CN CN201911383594.8A patent/CN111075864A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113385670A (en) * | 2021-05-06 | 2021-09-14 | 汕头市西北航空科技有限公司 | Sintering tool and sintering method for powder metallurgy brake pad friction block |
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