CN113027961A - Friction body self-adaptive adjusting structure of powder metallurgy brake pad for high-speed motor train unit - Google Patents
Friction body self-adaptive adjusting structure of powder metallurgy brake pad for high-speed motor train unit Download PDFInfo
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- CN113027961A CN113027961A CN202110183365.2A CN202110183365A CN113027961A CN 113027961 A CN113027961 A CN 113027961A CN 202110183365 A CN202110183365 A CN 202110183365A CN 113027961 A CN113027961 A CN 113027961A
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- Prior art keywords
- friction body
- mounting groove
- brake pad
- powder metallurgy
- disc spring
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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
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/04—Attachment of linings
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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
- F16D2069/0425—Attachment methods or devices
- F16D2069/0433—Connecting elements not integral with the braking member, e.g. bolts, rivets
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a friction body self-adaptive adjusting structure of a powder metallurgy brake pad for a high-speed motor train unit, which comprises a friction body, a gasket, a disc spring and a steel backing, wherein: the friction body is formed by combining and sintering friction material blocks, a framework and pins; a disc spring mounting groove and a pin mounting through hole are formed in the front face of the steel back, and the disc spring is placed in the disc spring mounting groove; and a clamp spring mounting groove is formed in the back surface of the steel back and used for internally mounting a clamp spring, the pin penetrates through the gasket, the disc spring and the pin mounting through hole, and the friction body assembly is fixed on the steel back through the matching of the clamp spring and the clamp groove on the pin. Compared with the prior art, the invention has the following positive effects: the invention solves the problems of poor horizontal adjustment capability, uneven stress and eccentric wear of the friction body and realizes a self-adaptive structure with horizontal and vertical adjustment capability; meanwhile, the eccentricity of the pin and the clamp spring in the self-adaptive adjustment process of the friction body is reduced, and the reliability of the brake pad is improved.
Description
Technical Field
The invention relates to a friction body self-adaptive adjusting structure of a powder metallurgy brake pad for a dovetail type high-speed motor train unit.
Background
In the braking process of the powder metallurgy brake pad for the high-speed motor train unit, in order to obtain the optimal braking effect, the friction body needs to be in contact with the surface of the brake disc in the largest area, and therefore the friction body needs to have self-adaptive adjustment capability. At present, the dovetail type powder metallurgy brake pad mainly adopts a disc spring floating structure to enable a friction body to have adjusting capacity, an inner ring of the disc spring is in contact with a spherical part of the friction body, and the friction body is expected to have horizontal adjusting capacity by utilizing the spherical part and vertical adjusting capacity by utilizing the disc spring during braking. After the structure is applied by engineering, the following problems exist:
1. the contact area of the disc spring and the spherical part of the friction body is small, and the spherical part of the friction body is pressed and deformed by the inner ring of the disc spring during braking to form a pit, so that the spherical surface of the friction body is damaged, and the horizontal adjustment capability of the friction body is lost;
2. the friction body loses the horizontal adjustment capability, the contact area between the friction body and the brake disc surface is reduced, the braking stress of the friction body is uneven, the braking effect is reduced, and the eccentric wear phenomenon of the friction body is further increased;
3. when the friction body is braked for the first time and is deflected horizontally and cannot recover the initial position, the pin of the friction body is not positioned at the central position any more, the clamp spring for connecting the friction body and the steel back is also positioned in an eccentric state, and the clamp spring is easy to jump out of the connecting part due to uneven braking pressure, so that the brake pad is ineffective.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a friction body self-adaptive adjusting structure of a powder metallurgy brake pad for a dovetail type high-speed motor train unit.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a friction body self-adaptation adjustment structure of powder metallurgy brake lining for high-speed EMUs, includes friction body, gasket, belleville spring and steel backing, wherein: the friction body is formed by combining and sintering friction material blocks, a framework and pins; a disc spring mounting groove and a pin mounting through hole are formed in the front face of the steel back, and the disc spring is placed in the disc spring mounting groove; and a clamp spring mounting groove is formed in the back surface of the steel back and used for internally mounting a clamp spring, the pin penetrates through the gasket, the disc spring and the pin mounting through hole, and the friction body assembly is fixed on the steel back through the matching of the clamp spring and the clamp groove on the pin.
Further, the disk spring mounting groove and the pin mounting through hole are concentric.
Further, the disk spring mounting groove and the clamp spring mounting groove are concentric.
Furthermore, the depth of the disc spring mounting groove is 3-5 mm.
Further, the depth of the clamp spring installation groove is 4-6 mm.
Furthermore, a spherical surface is arranged on the framework.
Further, a ball socket is provided on the spacer.
Further, the spherical surface on the framework is in contact with the ball socket on the gasket.
Furthermore, the disc spring mounting groove and the disc spring inner ring clamp the gasket.
Furthermore, a gap of 0.5-2 mm is formed between the framework and the steel backing.
Compared with the prior art, the invention has the following positive effects:
(1) the invention adopts the adjusting structure with the ball socket gasket added between the friction body and the disc spring, solves the problems of poor horizontal adjusting capability, uneven stress and eccentric wear of the friction body, and realizes the self-adaptive structure with horizontal and vertical adjusting capability.
(2) According to the invention, through the embedded close fit design of the ball socket gasket, the disc spring and the steel backing mounting groove, the horizontal movement of the friction body is limited, the eccentric degree of the pin and the clamp spring in the self-adaptive adjustment process of the friction body is reduced, and the reliability of the brake pad is improved.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of a friction body adaptive adjustment structure of the present invention;
FIG. 3 is a schematic view of a gasket;
description of reference numerals:
the friction body 1, the gasket 2, the disc spring 3, the dovetail steel back 4 with the mounting groove, the clamp spring 5, the friction material block 6, the framework 7, the pin 8, the disc spring mounting groove 9, the pin mounting through hole 10, the clamp spring mounting groove 11, the clamping groove 12 and the ball socket 13.
Detailed Description
A friction body self-adaptive adjusting structure of a powder metallurgy brake lining for a dovetail type high-speed motor train unit is shown in figure 1 and is formed by combining a friction body 1, a gasket 2, a disc spring 3, a dovetail type steel back 4 with an installation groove and a clamp spring 5.
As shown in fig. 2, the friction body 1 is formed by sintering a combination of a friction material block 6, a frame 7 and a pin 8. The front surface of the steel back 4 is provided with a disk spring mounting groove 9 and a pin mounting through hole 10 concentric with the disk spring mounting groove 9, and the disk spring 3 is placed in the disk spring mounting groove 9. And a clamp spring mounting groove 11 concentric with the disc spring mounting groove 9 is formed in the back surface of the steel back 4, and a clamp spring 5 is arranged in the clamp spring mounting groove. The pin 8 penetrates through the gasket 2, the disc spring 3 and the pin mounting through hole 10, and the friction body assembly is fixed on the steel back through the matching of the snap spring 5 and a clamping groove 12 on the pin. The depth of the disc spring mounting groove 9 is 3-5 mm, and the depth of the clamp spring mounting groove 11 is 4-6 mm.
The structure of the gasket 2 is as shown in fig. 3, and a ball socket 13 is arranged on the gasket 2; the framework 7 is provided with a spherical surface which is in contact fit with a ball socket 13 on the gasket 2 to realize the adjustment of the friction body 1 in the horizontal direction, the lower plane of the gasket 2 (namely the maximum outer diameter of the ball socket 13) is in contact with the inner ring of the disc spring 3 in the disc spring mounting groove 9, and the outer diameter is matched with the inner diameter of the disc spring mounting groove 9, so that the limiting effect on the friction body 1 is realized, and the pin 8 is ensured to be positioned at the central position of the pin mounting through hole 10. A gap of 0.5-2 mm is arranged between the framework 7 and the steel back 4, so that the framework has vertical adjustment capability on the steel back.
The working principle of the invention is as follows:
(1) the spherical part of the friction body 1 is in contact with the ball socket 13 of the gasket 2, so that the contact area is increased, the problem of deformation of the spherical part of the friction body in the traditional scheme is avoided, and the horizontal adjustment capability of the friction body is ensured;
(2) a disk spring 3 is arranged below the gasket 2, so that the friction body can adapt to the fluctuation of the braking disk surface and the uniform pressure distribution, and the vertical adjustment capability is provided;
(3) gasket 2 and belleville spring 3 inlay in belleville spring mounting groove 9 of steel backing 4, through mounting groove and belleville spring inner circle chucking gasket 2, play limiting displacement, ensure that the pin 8 of friction body is in the center department of the pin installation through-hole 10 of steel backing.
Claims (10)
1. The utility model provides a friction body self-adaptation adjustment structure of powder metallurgy brake lining for high-speed EMUs which characterized in that: including friction piece, gasket, belleville spring and steel backing, wherein: the friction body is formed by combining and sintering friction material blocks, a framework and pins; a disc spring mounting groove and a pin mounting through hole are formed in the front face of the steel back, and the disc spring is placed in the disc spring mounting groove; and a clamp spring mounting groove is formed in the back surface of the steel back and used for internally mounting a clamp spring, the pin penetrates through the gasket, the disc spring and the pin mounting through hole, and the friction body assembly is fixed on the steel back through the matching of the clamp spring and the clamp groove on the pin.
2. The friction body self-adaptive adjusting structure of the powder metallurgy brake pad for the high-speed motor train unit according to claim 1 is characterized in that: the disk spring mounting groove is concentric with the pin mounting through hole.
3. The friction body self-adaptive adjusting structure of the powder metallurgy brake pad for the high-speed motor train unit according to claim 1 is characterized in that: the disk spring mounting groove and the clamp spring mounting groove are concentric.
4. The friction body self-adaptive adjusting structure of the powder metallurgy brake pad for the high-speed motor train unit according to claim 1 is characterized in that: the depth of the disc spring mounting groove is 3-5 mm.
5. The friction body self-adaptive adjusting structure of the powder metallurgy brake pad for the high-speed motor train unit according to claim 1 is characterized in that: the depth of the clamp spring mounting groove is 4-6 mm.
6. The friction body self-adaptive adjusting structure of the powder metallurgy brake pad for the high-speed motor train unit according to claim 1 is characterized in that: the framework is provided with a spherical surface.
7. The friction body self-adaptive adjusting structure of the powder metallurgy brake pad for the high-speed motor train unit according to claim 6 is characterized in that: a ball socket is arranged on the gasket.
8. The friction body self-adaptive adjusting structure of the powder metallurgy brake pad for the high-speed motor train unit according to claim 7 is characterized in that: the spherical surface on the framework is in contact with the ball socket on the gasket.
9. The friction body self-adaptive adjusting structure of the powder metallurgy brake pad for the high-speed motor train unit according to claim 1 is characterized in that: and the disc spring mounting groove and the disc spring inner ring clamp the gasket.
10. The friction body self-adaptive adjusting structure of the powder metallurgy brake pad for the high-speed motor train unit according to claim 1 is characterized in that: and a gap of 0.5-2 mm is formed between the framework and the steel backing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110183365.2A CN113027961A (en) | 2021-02-10 | 2021-02-10 | Friction body self-adaptive adjusting structure of powder metallurgy brake pad for high-speed motor train unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110183365.2A CN113027961A (en) | 2021-02-10 | 2021-02-10 | Friction body self-adaptive adjusting structure of powder metallurgy brake pad for high-speed motor train unit |
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| Publication Number | Publication Date |
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| CN113027961A true CN113027961A (en) | 2021-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110183365.2A Pending CN113027961A (en) | 2021-02-10 | 2021-02-10 | Friction body self-adaptive adjusting structure of powder metallurgy brake pad for high-speed motor train unit |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016577A (en) * | 2012-12-24 | 2013-04-03 | 贵州新安航空机械有限责任公司 | High-pasting-degree powder metallurgy high-speed brake pad |
| WO2013150881A1 (en) * | 2012-04-05 | 2013-10-10 | 曙ブレーキ工業株式会社 | Friction pad assembly for disk brake |
| WO2014171523A1 (en) * | 2013-04-18 | 2014-10-23 | 曙ブレーキ工業株式会社 | Friction pad assembly for disk brake |
| CN105864328A (en) * | 2016-06-08 | 2016-08-17 | 湖南鼎懋科技有限公司 | Train brake pad |
| DE102017100539A1 (en) * | 2017-01-12 | 2018-07-12 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Use of a non-contact optical laser triangulation method for determining the geometric properties of a brake pad |
| CN108488279A (en) * | 2018-05-22 | 2018-09-04 | 沈阳精合数控科技开发有限公司 | A kind of non-dove-tail form powder metallurgy brake pad |
| CN209294306U (en) * | 2019-03-19 | 2019-08-23 | 北京浦然轨道交通科技有限公司 | A kind of high and cold floatation type brake pad |
| CN210265615U (en) * | 2019-01-15 | 2020-04-07 | 北京浦然轨道交通科技有限公司 | Floating disc type 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 |
-
2021
- 2021-02-10 CN CN202110183365.2A patent/CN113027961A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013150881A1 (en) * | 2012-04-05 | 2013-10-10 | 曙ブレーキ工業株式会社 | Friction pad assembly for disk brake |
| CN103016577A (en) * | 2012-12-24 | 2013-04-03 | 贵州新安航空机械有限责任公司 | High-pasting-degree powder metallurgy high-speed brake pad |
| WO2014171523A1 (en) * | 2013-04-18 | 2014-10-23 | 曙ブレーキ工業株式会社 | Friction pad assembly for disk brake |
| CN105864328A (en) * | 2016-06-08 | 2016-08-17 | 湖南鼎懋科技有限公司 | Train brake pad |
| DE102017100539A1 (en) * | 2017-01-12 | 2018-07-12 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Use of a non-contact optical laser triangulation method for determining the geometric properties of a brake pad |
| CN108488279A (en) * | 2018-05-22 | 2018-09-04 | 沈阳精合数控科技开发有限公司 | A kind of non-dove-tail form powder metallurgy brake pad |
| CN210265615U (en) * | 2019-01-15 | 2020-04-07 | 北京浦然轨道交通科技有限公司 | Floating disc type brake pad |
| CN209294306U (en) * | 2019-03-19 | 2019-08-23 | 北京浦然轨道交通科技有限公司 | A kind of high and cold floatation type 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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