CN103133568B - Floating type double-layer back plate brake pad - Google Patents
Floating type double-layer back plate brake pad Download PDFInfo
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- CN103133568B CN103133568B CN201310047560.8A CN201310047560A CN103133568B CN 103133568 B CN103133568 B CN 103133568B CN 201310047560 A CN201310047560 A CN 201310047560A CN 103133568 B CN103133568 B CN 103133568B
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Abstract
The invention discloses a kind of floating type double-layer back plate brake pad, it comprises, first backboard, be arranged on several brake pads on the first backboard, be arranged at the elastic support sheet between brake pad and the first backboard, and brake pad can be connected to the second backboard on the first backboard by floating ground, described elastic support sheet comprises, the spherical be fitted and connected with the spherical support portion of brake pad; The bottom centre of spherical forms the pilot hole that the positioning part that is suitable for brake pad is passed; Be arranged at the some support ratchets outside spherical, support ratchet from the edge of spherical to the bottom of spherical and tendency extend away from pilot hole direction, the connection edge supporting ratchet is connected by the section of seamlessly transitting with the edge of spherical, supports the bottom that the ratchet support edge relative with connecting edge extends beyond spherical.The elastic supporting member for supporting optical member part ratchet that this brake pad solves existing brake lining is not outwards upheld and is bent inwards on the contrary, makes the problem that the support of appropriate section was lost efficacy.
Description
Technical field
The present invention relates to a kind of disc brake being applied to bullet train, particularly the floating type double-layer back plate brake pad of one.
Background technique
Along with railroad train is to the trend of high speed development, there is higher requirement to train braking performance.In train disk braking system, brake pad is one of critical component, and direct and brake disc triboabsorption kinetic energy, makes train braking stop.Existing train brake plate generally adopts rivet to be fixedly connected with, when train is braked at a high speed, be difficult between brake pad and brake disc realize fitting completely, such brake lining easily produces brake pad crackle, falls the phenomenon such as block, defect under the acting in conjunction of bearing varying stress and high heat load, also can cause brake disc crackle time serious, affect the braking effect of bullet train.
In order to solve the problem, Chinese patent document CN102107665A discloses a kind of high-speed brake lining with elastic structure, belleville spring is installed additional between brake pad and backboard, when high speed brake lining is braked, the angle of brake pad can change and improve effective friction area between brake pad and brake disc, thus alleviates the eccentric wear of brake pad.But limit by disk-shape spring structure, it is linear contact lay between brake pad and belleville spring, the support force of belleville spring to brake pad is less, and the frictional force that during high-speed train braking, brake pad is subject to and pressure are all very large, so belleville spring is to the poor effect alleviating brake pad eccentric wear, and larger frictional force causes the working life of belleville spring shorter, the frequency changing belleville spring is higher.
For solving the problem, Chinese patent document CN102401047A discloses a kind of elastic support sheet for train brake plate, comprises spherical support face portion, centre pilot bore portion and fixed support detent portions.During train braking, the brake pad of brake lining automatically can adjust in elastic support sheet spherical, improves effective friction area of brake pad and brake disc.This elastic support sheet is compared belleville spring and is substantially increased elasticity and the support force to brake pad.But, fixed pawl spherical support part in this technological scheme and face transition directly by what there is several angle between spherical, when brake pad is when being subject to braking at a high speed the crunch brought, the angle of described transitional surface produces larger shearing stress, thus cause part ratchet outwards not upheld bending inwards on the contrary, the support of appropriate section was lost efficacy, this part ratchet even can be caused to fracture damage.
Summary of the invention
For this reason, technical problem to be solved by this invention is that the elastic supporting member for supporting optical member part ratchet of existing train brake plate is not outwards upheld and bends inwards on the contrary, make the problem that the support of appropriate section was lost efficacy, and then a kind of brake pad that reliablely and stablely can make brake pad and brake disc good fit is provided.
For solving the problems of the technologies described above, the present invention discloses a kind of floating type double-layer back plate brake pad, and it comprises, the first backboard, and described first backboard forms multiple positioning hole for connecting brake pad; Several brake pads, it comprises, friction part, the positioning part of inserting described positioning hole and the spherical support portion be arranged between described friction part and described positioning part, and the sphere in described spherical support portion protrudes to direction, described positioning part; Described brake pad realizes being connected with having certain amount of floating by the second backboard and described first backboard; Described second backboard forms multiple flanging bore for being socketed described brake pad, is fixedly connected with or removably connects between described second backboard with described first backboard; Also comprise the elastic support sheet be arranged between described brake pad and described first backboard, described elastic support sheet comprises, spherical, is fitted and connected with described spherical support portion; The bottom centre of described spherical forms the pilot hole being suitable for described positioning part and passing; Be arranged at the some support ratchets outside described spherical, described support ratchet is also inclined to away from the extension of described pilot hole direction from the edge of described spherical to the bottom of described spherical, the connection edge of described support ratchet is connected by the section of seamlessly transitting with the edge of described spherical, and the support edge that described support ratchet is relative with described connection edge extends beyond the bottom of described spherical.
Arrange rotation prevention structure between described brake pad and described second backboard, the circumference of described brake pad is provided with multiple anti-rotation projection; The hole wall of described flanging bore forms the anti-rotation groove with described anti-rotation male cooperation.
The roof of described anti-rotation groove forms rib, for described anti-rotation projection being arranged in described anti-rotation groove, realizes being connected with having certain amount of floating between described brake pad with described first backboard.
Described brake pad by friction piece, locating piece and dunnage one sinter molding; Wherein, described friction piece is cylindrical, and it forms described friction part, and described dunnage is the circular plate of middle part for spheric structure, and the circumference of described dunnage is evenly arranged three described anti-rotations protruding, wherein land portions forms described spherical support portion; The shaping described positioning part, one end of described locating piece, described positioning part is passed described dunnage and is inserted in described positioning hole, and the other end is connected with described friction piece.
Described first backboard forms the coaxial ream flat hole of multiple and described positioning hole, described ream flat hole places described elastic support sheet, the diameter of described ream flat hole is slightly larger than the external diameter of described elastic support sheet.
Described first backboard is having coattail board away from welding on a side of described brake pad or riveted joint.
Described support ratchet comprises one section of conical junction surface and one section of columniform supporting surface, and described junction surface and described supporting surface pass through arc transition.
Described spherical is made up of edge land portions and bottom land portions, the radius of curvature of described edge land portions is less than the radius of curvature of described bottom land portions, described edge land portions contacts with the land portions face of described brake lining brake pad, and leaves gap between described bottom land portions and described brake lining brake pad.
Described spherical is made up of one section of sphere, and described spherical contacts with the land portions face of described brake lining brake pad.
Outside along described spherical is symmetrical arranged 4 described support ratchets, by U-shaped opening transition between adjacent described support ratchet, at regular intervals with the described section of seamlessly transitting tool at the bottom of the mouth of described U-shaped opening.
Technique scheme of the present invention has the following advantages compared to existing technology:
(1) brake pad of the present invention forms floating type connecting structure by arranging elastic support sheet between brake pad and backboard, the spherical that elastic support sheet arranges the land portions for supporting brake lining brake pad and the support ratchet be positioned at outside spherical, supporting ratchet is fixed in the positioning hole of friction block, when bullet train is braked, brake pad is by spherical float support, can freely adjust best effort face, the effective brake area of the contact of brake pad and brake disc is increased, alleviates the eccentric wear phenomenon of brake pad.Further, be connected by smooth transition surface between spherical with support ratchet, when brake pad is subject to larger stress, stress outwards can be disperseed, support ratchet is outwards stretched.Compared to the structure of existing brake pad, support performance and the elasticity of elastic support sheet of the present invention improve all greatly.
(2) further, in brake pad of the present invention, first backboard and brake pad realize being connected by floating ground by the structure of the second backboard on the one hand, prevent brake pad rotation on the other hand, like this, brake pad can be designed to cylindrical, and its processing cost reduces, and compare the existing structure be connected with brake pad by backboard by elastic collar, the connection reliability of this structure improves greatly.
(3), in elastic support sheet of the present invention, support ratchet and comprise one section of conical junction surface and one section of columniform supporting surface, junction surface and supporting surface pass through arc transition.Decrease the problem that stress is concentrated, be more beneficial to support ratchet and outwards carry out resiliently deformable.
(3) further, in elastic support sheet of the present invention, its spherical is made up of edge land portions and bottom land portions, and edge land portions contacts with the land portions face of brake lining brake pad, and leaves gap between bottom land portions and brake lining brake pad; This structure can make the rotation of brake pad more flexible.
(5) further, in elastic support sheet of the present invention, by U-shaped opening transition between adjacent described support ratchet, at regular intervals with the described section of seamlessly transitting tool at the bottom of the mouth of U-shaped opening; Due to the main stress concentrated position that the section of seamlessly transitting supported between ratchet and spherical is elastic support sheet, U-shaped opening with seamlessly transit spacer segment one segment distance the supportive of elastic support sheet can be made to improve, avoid the poor phenomenon causing ratchet to fracture of support force.
Accompanying drawing explanation
In order to make content of the present invention be more likely to be clearly understood, below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the structural representation of floating type double-layer back plate brake pad of the present invention;
Fig. 2 is the A-A sectional drawing of Fig. 1;
Fig. 3 is the structural representation of brake pad of the present invention;
Fig. 4 is the plan view of elastic support sheet of the present invention;
Fig. 5 is the sectional drawing of a kind of elastic support sheet of the present invention;
Fig. 6 is the sectional drawing of another kind of elastic support sheet of the present invention;
Fig. 7 is the riveted structure schematic diagram of dorsulum of the present invention and coattail board.
In figure, reference character is expressed as:
1-first backboard, 11-positioning hole, 12-ream flat hole, 2-brake pad, 21-friction part, 22-spherical support portion, 23-positioning part, 24-anti-rotation is protruding, 3 second backboards, 31-flanging bore, 32-anti-rotation groove, 4-elastic support sheet, 41-spherical, 411-pilot hole, 412-edge, 42-supports ratchet, the 43-section of seamlessly transitting, and 421-connects edge, 422-support edge, 423-junction surface, 424-supporting surface, 5-friction piece, 6-locating piece, 7-dunnage, 8-coattail board, 9-rivet.
Embodiment
Below with reference to accompanying drawing, following examples are used to be further elaborated the present invention.
Fig. 1, Fig. 2 is floating type double-layer back plate brake pad of the present invention, it comprises, first backboard 1, be arranged on several brake pads 2 on described first backboard 1, be arranged at the elastic support sheet 4 between described brake pad 2 and described first backboard 1, and described brake pad 2 can be connected to the second backboard 3 on described first backboard 1 by floating ground.
Wherein, described first backboard 1 forms multiple positioning hole 11 for connecting brake pad 2; Preferably, described first backboard 1 forms the coaxial ream flat hole 12 of multiple and described positioning hole 11, described ream flat hole 12 places described elastic support sheet 4, the diameter of described ream flat hole 12 is slightly larger than the external diameter of described elastic support sheet 4.In the present embodiment, as shown in Figure 7, described first backboard 1 has coattail board 8 by described rivet 9 riveted joint on the side away from described brake pad 2.
Described brake pad 2 comprises friction part 21, the positioning part 23 of inserting described positioning hole 11 and the spherical support portion 22 be arranged between described friction part 21 and described positioning part 23, and the sphere in described spherical support portion 22 protrudes to direction, described positioning part 23.
Described second backboard 3 forms multiple flanging bore 31 for being socketed described brake pad 2, is fixedly connected with or removably connects between described second backboard 3 with described first backboard 1.In present embodiment, described backboard 3 welds with described first backboard 1.
Arrange rotation prevention structure between described brake pad 2 and described second backboard 3, the circumference of described brake pad 2 is provided with multiple anti-rotation projection 24; The hole wall of described flanging bore 31 forms the anti-rotation groove 32 coordinated with described anti-rotation protruding 24.The roof of described anti-rotation groove 32 forms rib, for described anti-rotation projection 24 being arranged in described anti-rotation groove 32, realizes being connected with having certain amount of floating between described brake pad 2 with described first backboard 1.
In present embodiment, as shown in Figure 3, described brake pad 2 is by friction piece 5, and dunnage 7 one sinter molding; Wherein, described friction piece 5 is cylindrical, and it forms described friction part 21, described dunnage 7 for middle part be the circular plate of spheric structure, the circumference of described dunnage 7 is evenly arranged three described anti-rotation projections 24, wherein land portions forms described spherical support portion 22; The shaping described positioning part 23, one end of described locating piece 6, described positioning part 23 is passed described dunnage 7 and inserts in described positioning hole 11, and the other end is connected with described friction piece 5.
As shown in Fig. 4, Fig. 5, Fig. 6, described elastic support sheet 4 comprises, spherical 41, is fitted and connected with described spherical support portion 22; The bottom centre of described spherical 41 forms the pilot hole 411 being suitable for described positioning part 23 and passing; Be arranged at the some support ratchets 42 outside described spherical 41, described support ratchet 42 is also inclined to away from the extension of described pilot hole 411 direction from the edge 412 of described spherical 41 to the bottom of described spherical 41, the connection edge 421 of described support ratchet 42 is connected by the section of seamlessly transitting 43 with the edge of described spherical 41, and the support edge 422 that described support ratchet 42 is relative with described connection edge 421 extends beyond the bottom of described spherical 41.
Described support ratchet 42 comprises one section of conical junction surface 423 and one section of columniform supporting surface 424, and described junction surface 423 passes through arc transition with described supporting surface 424.
In present embodiment, as shown in Figure 5, described spherical 41 is made up of edge land portions and bottom land portions, the radius of curvature of described edge land portions is less than the radius of curvature of described bottom land portions, described edge land portions contacts with the land portions face of described brake lining brake pad, and leaves gap between described bottom land portions and described brake lining brake pad.
In other mode of executions, as shown in Figure 6, in order to easy to process, described spherical 41 is made up of one section of sphere, and described spherical 41 contacts with the land portions face of described brake lining brake pad.
Outside along described spherical 41 is symmetrical arranged 4 described support ratchets 42, by the transition of U-shaped opening 44 between adjacent described support ratchet 42, at regular intervals with the described section of seamlessly transitting 43 tool at the bottom of the mouth of described U-shaped opening 44.
Brake pad assembling of the present invention is as follows:
Described coattail board 8 is passed through rivet with described first backboard 1, again the described support ratchet 42 of elastic support sheet described in several 4 is positioned in described ream flat hole 12, by the described positioning part 23 of brake pad described in several 2 respectively successively through in the described pilot hole 411 of described elastic support sheet 4 and the described positioning hole 11 of described first backboard 1, again described second backboard 3 is set on described brake pad 2, anti-rotation projection 24 on described brake pad 2 is inserted in the anti-rotation groove 32 on described second backboard 3, make relatively described first backboard 1 of described brake pad 2 can have certain amount of floating up and down, prevent described brake pad 2 from rotating simultaneously, finally described second backboard 3 is welded to connect with described first backboard 1.
During braking device work, retardation pressure acts on described first backboard 1, is delivered on described brake pad 2 by some elastic support sheets 4, and some brake pads 2 steadily laminating brake disc implement braking.Make brake lining brake pad can realize three-dimensional minor rotation because the spherical 41 of described elastic support sheet 4 contacts with the spherical support portion 22 of described brake pad 2, with the fricting working surface making brake pad farthest with brake disc, prevent the problem of brake pad eccentric wear.
In other mode of executions, described first backboard 1 is welded to connect with described coattail board 8, and described backboard 3 can also be removably connected by screw with described first backboard 1.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all mode of executions.And thus the apparent change of extending out or variation be still among the protection domain of the invention.
Claims (10)
1. a floating type double-layer back plate brake pad, is characterized in that: it comprises,
First backboard (1), described first backboard (1) forms multiple positioning hole (11) for connecting brake pad (2); Several brake pads (2), it comprises, friction part (21), the positioning part (23) of inserting described positioning hole (11) and the spherical support portion (22) be arranged between described friction part (21) and described positioning part (23), the sphere of described spherical support portion (22) protrudes to described positioning part (23) direction; Described brake pad (2) realizes being connected with having certain amount of floating by the second backboard (3) and described first backboard (1);
Described second backboard (3) forms multiple flanging bore (31) for being socketed described brake pad (2), is fixedly connected with or removably connects between described second backboard (3) with described first backboard (1);
Also comprise the elastic support sheet (4) be arranged between described brake pad (2) and described first backboard (1), described elastic support sheet (4) comprises, spherical (41), is fitted and connected with described spherical support portion (22), the bottom centre of described spherical (41) forms the pilot hole (411) being suitable for passing described positioning part (23), be arranged at some support ratchets (42) in described spherical (41) outside, described support ratchet (42) from the edge (412) of described spherical (41) to the bottom of described spherical (41) and tendency extend away from described pilot hole (411) direction, the connection edge (421) of described support ratchet (42) is connected by the section of seamlessly transitting (43) with the edge of described spherical (41), described support ratchet (42) support edge (422) relative with described connection edge (421) extends beyond the bottom of described spherical (41).
2. floating type double-layer back plate brake pad according to claim 1, is characterized in that:
Arrange rotation prevention structure between described brake pad (2) and described second backboard (3), the circumference of described brake pad (2) is provided with multiple anti-rotation projection (24); The hole wall of described flanging bore (31) forms the anti-rotation groove (32) coordinated with described anti-rotation projection (24).
3. floating type double-layer back plate brake pad according to claim 2, is characterized in that:
The roof of described anti-rotation groove (32) forms rib, for described anti-rotation projection (24) is arranged in described anti-rotation groove (32), realize being connected while there is certain amount of floating between described brake pad (2) with described first backboard (1).
4., according to the arbitrary described floating type double-layer back plate brake pad of claim 2-3, it is characterized in that:
Described brake pad (2) by friction piece (5), locating piece (6) and dunnage (7) one sinter molding; Wherein, described friction piece (5) is for cylindrical, it forms described friction part (21), described dunnage (7) for middle part be the circular plate of spheric structure, the circumference of described dunnage (7) is evenly arranged three described anti-rotation projections (24), wherein outer spherical surface part forms described spherical support portion (22); The shaping described positioning part (23) in one end of described locating piece (6), described positioning part (23) is through described dunnage (7) and insert in described positioning hole (11), and the other end is connected with described friction piece (5).
5., according to the arbitrary described floating type double-layer back plate brake pad of claim 1-3, it is characterized in that:
Described first backboard (1) forms the coaxial ream flat hole (12) of multiple and described positioning hole (11), described ream flat hole (12) is upper places described elastic support sheet (4), and the diameter of described ream flat hole (12) is slightly larger than the external diameter of described elastic support sheet (4).
6., according to the arbitrary described floating type double-layer back plate brake pad of claim 1-3, it is characterized in that:
Described first backboard (1) is welded or riveted on the side away from described brake pad (2) coattail board (8).
7., according to the arbitrary described floating type double-layer back plate brake pad of claim 1-3, it is characterized in that:
Described support ratchet (42) comprises one section of conical junction surface (423) and one section of columniform supporting surface (424), and described junction surface (423) and described supporting surface (424) pass through arc transition.
8., according to the arbitrary described floating type double-layer back plate brake pad of claim 1-3, it is characterized in that:
Described spherical (41) is made up of edge land portions and bottom land portions, the radius of curvature of described edge land portions is less than the radius of curvature of described bottom land portions, described edge land portions contacts with the land portions face of described brake lining brake pad, and leaves gap between described bottom land portions and described brake lining brake pad.
9., according to the arbitrary described floating type double-layer back plate brake pad of claim 1-3, it is characterized in that:
Described spherical (41) is made up of one section of sphere, and described spherical (41) contacts with the land portions face of described brake lining brake pad.
10., according to the arbitrary described floating type double-layer back plate brake pad of claim 1-3, it is characterized in that:
Outside along described spherical (41) is symmetrical arranged 4 described support ratchets (42), by U-shaped opening (44) transition between adjacent described support ratchet (42), at regular intervals with the described section of seamlessly transitting (43) tool at the bottom of the mouth of described U-shaped opening (44).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310047560.8A CN103133568B (en) | 2013-02-06 | 2013-02-06 | Floating type double-layer back plate brake pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310047560.8A CN103133568B (en) | 2013-02-06 | 2013-02-06 | Floating type double-layer back plate brake pad |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103133568A CN103133568A (en) | 2013-06-05 |
| CN103133568B true CN103133568B (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310047560.8A Active CN103133568B (en) | 2013-02-06 | 2013-02-06 | Floating type double-layer back plate brake pad |
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| CN (1) | CN103133568B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133571B (en) * | 2013-02-06 | 2016-04-13 | 北京天宜上佳新材料有限公司 | Train floatation type brake pad |
| CN104455105A (en) * | 2014-12-17 | 2015-03-25 | 北京天宜上佳新材料有限公司 | Floating type brake pad |
| EP3396193A4 (en) * | 2015-12-25 | 2018-12-12 | Nippon Steel & Sumitomo Metal Corporation | Brake lining for rolling stock and disc brake for rolling stock provided with same |
| AT519090B1 (en) * | 2017-03-21 | 2018-04-15 | Miba Frictec Gmbh | brake lining |
| CN107044501A (en) * | 2017-04-17 | 2017-08-15 | 北京天宜上佳新材料股份有限公司 | Brake pad and disk brake |
| US20230108312A1 (en) * | 2020-02-20 | 2023-04-06 | Volvo Truck Corporation | Brake pad retainer system, brake pad, and vehicle |
| KR102495055B1 (en) * | 2020-06-30 | 2023-02-02 | 주식회사 다윈프릭션 | Brake pad |
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| CN1796810A (en) * | 2004-10-07 | 2006-07-05 | Ims传动装置有限公司 | Bearing element |
| EP2290257A1 (en) * | 2009-09-01 | 2011-03-02 | Dawin Friction | Friction pad for brake system |
| CN102359523A (en) * | 2011-08-22 | 2012-02-22 | 北京天宜上佳新材料有限公司 | Floating type train brake pad capable of replacing friction block |
| CN203161918U (en) * | 2013-02-06 | 2013-08-28 | 北京天宜上佳新材料有限公司 | Floating double-back-plate brake pad |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100784504B1 (en) * | 2006-08-28 | 2007-12-11 | 주식회사 다윈프릭션 | Friction pad for brake system and method for manufacturing the same |
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2013
- 2013-02-06 CN CN201310047560.8A patent/CN103133568B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1796810A (en) * | 2004-10-07 | 2006-07-05 | Ims传动装置有限公司 | Bearing element |
| EP2290257A1 (en) * | 2009-09-01 | 2011-03-02 | Dawin Friction | Friction pad for brake system |
| CN102003478A (en) * | 2009-09-01 | 2011-04-06 | 达尔文菲利克生股份有限公司 | Friction pad for brake system |
| CN102359523A (en) * | 2011-08-22 | 2012-02-22 | 北京天宜上佳新材料有限公司 | Floating type train brake pad capable of replacing friction block |
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| CN103133568A (en) | 2013-06-05 |
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