CN203161918U - Floating double-back-plate brake pad - Google Patents
Floating double-back-plate brake pad Download PDFInfo
- Publication number
- CN203161918U CN203161918U CN 201320069327 CN201320069327U CN203161918U CN 203161918 U CN203161918 U CN 203161918U CN 201320069327 CN201320069327 CN 201320069327 CN 201320069327 U CN201320069327 U CN 201320069327U CN 203161918 U CN203161918 U CN 203161918U
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- brake pad
- backboard
- spherical
- support
- land portions
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Abstract
The utility model discloses a floating double-back-plate brake pad comprising a first back plate, a plurality of friction blocks, elastic support plates, and a second back plate. The friction blocks are arranged on the first back plate. The elastic support plates are disposed between the friction blocks and the first back plate. The friction blocks are connected to the second back plate on the first back plate in a floating manner. Each elastic support plate comprises a spherical support surface and a plurality of support pawls, wherein the spherical support surface is connected with a spherical support part of one friction block in an attached manner, a guide hole for passage of a positioning part of one friction block is formed at the bottom of each spherical support surface, the support pawls are disposed on the outer side of the spherical support surface and extend from the edge of the spherical support surface to the bottom of the spherical support surface and tends to leave the guide hole, connecting edges of the support pawls are smoothly connected with the edge of the support spherical surface, and support edges of the support pawls, opposite to the connecting edges, extend out of the bottom of the spherical support surface. The floating double-back-plate brake pad has the advantage that the problem that corresponding parts of the existing brake pad fails in supporting as part of the pawls of the elastic support parts of the existing brake pad are not extended outwards but bent inwards is solved.
Description
Technical field
The utility model relates to a kind of disc brake that is applied to bullet train, particularly a kind of floating type double-deck backboard brake pad.
Background technique
Along with the trend of railroad train to high speed development, the train braking performance there has been higher requirement.In the train disk braking system, brake pad is one of critical component, and direct and brake disc friction absorbs kinetic energy, and train braking is stopped.Existing train braking brake lining generally adopts rivet fixedly connected, when train is braked at a high speed, be difficult between brake pad and the brake disc realize fitting fully, like this brake lining under the acting in conjunction of bearing varying stress and high heat load, be easy to generate the brake pad crackle, fall piece, phenomenon such as damaged, also can cause the brake disc crackle when serious, influence the braking effect of bullet train.
In order to address the above problem, Chinese patent file CN102107665A discloses a kind of elastic structure high speed brake lining, between brake pad and backboard, install belleville spring additional, the angle of brake pad can change and improve effective friction area between brake pad and the brake disc when the high speed brake lining is braked, thereby alleviates the eccentric wear of brake pad.But limit by the belleville spring structure, contact for line between brake pad and the belleville spring, belleville spring is less to the support force of brake pad, and brake pad is subjected to during high-speed train braking frictional force and pressure are all very big, so belleville spring is to alleviating the poor effect of brake pad eccentric wear, and bigger frictional force causes the working life of belleville spring shorter, and the frequency of changing belleville spring is higher.
For addressing the above problem, Chinese patent file CN102401047A discloses a kind of elastic support sheet for the train braking brake lining, comprises spherical part, centre pilot bore portion and fixed support ratchet part.The brake pad of brake lining can be adjusted in elastic support sheet spherical automatically during train braking, improves effective friction area of brake pad and brake disc.This elastic support sheet compares that belleville spring has improved elasticity greatly and to the support force of brake pad.But, between the spherical supporting part of fixed pawl in this technological scheme and the spherical by having the transition of facing directly of several angle, when brake pad when being subjected to the crunch that at a high speed braking brings, the angle of described transitional surface produces big shearing stress, bend inwards on the contrary thereby cause the part ratchet outwards not upheld, to make the support of appropriate section lose efficacy, even can cause the damage that fractures of this part ratchet.
The model utility content
For this reason, technical problem to be solved in the utility model is that the elastic supporting member for supporting optical member part ratchet of existing train braking brake lining 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 can reliablely and stablely make brake pad and brake disc good fit is provided.
For solving the problems of the technologies described above, the utility model discloses a kind of floating type double-deck backboard brake pad, and it comprises, first backboard forms a plurality of for the positioning hole that connects brake pad on described first backboard; Several brake pads, it comprises, friction part, insert the positioning part of described positioning hole and be arranged at described friction part and described positioning part between spherical supporting portion, the sphere of described spherical supporting portion protrudes to described positioning part direction; Described brake pad realizes that by second backboard and described first backboard having certain amount of floating ground is connected; Described second backboard forms a plurality of flange holes for the described brake pad of socket, fixedlys connected between described second backboard and described first backboard or removably connects; Also comprise the elastic support sheet that is arranged between described brake pad and described first backboard, described elastic support sheet comprises, spherical is fitted and connected with described spherical supporting portion; The bottom centre of described spherical forms and is suitable for the pilot hole that described positioning part is passed; Be arranged at some support ratchets in the described spherical outside, described support ratchet extends away from described pilot hole direction to bottom and the tendency of described spherical from the edge 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.
Between described brake pad and described second backboard rotation prevention structure is set, upwards is provided with a plurality of anti-rotation projectioies the week of described brake pad; Form the anti-rotation groove that cooperates with described anti-rotation projection on the hole wall in described flange hole.
The roof of described anti-rotation groove constitutes rib, is used for described anti-rotation projection is arranged in the described anti-rotation groove, realizes that having certain amount of floating ground between described brake pad and described first backboard is connected.
Described brake pad is by friction piece, locating piece and dunnage one sinter molding; Wherein, described friction piece is cylindrical, and it constitutes described friction part, and described dunnage is that the middle part is the circular plate of spheric structure, and the week of described dunnage upwards evenly arranges three described anti-rotation projectioies, and wherein land portions constitutes described spherical supporting portion; The described positioning part of one end moulding of described locating piece, described positioning part is passed described dunnage and is inserted in the described positioning hole, and the other end is connected with described friction piece.
Form the coaxial flat hole of ream of a plurality of and described positioning hole on described first backboard, place described elastic support sheet on the flat hole of described ream, the slightly larger in diameter in the flat hole of described ream is in the external diameter of described elastic support sheet.
Described first backboard has coattail board in side welding or the riveted joint away from described brake pad.
Described support ratchet comprises one section conical junction surface and one section 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 the gap between described bottom land portions and the described brake lining brake pad.
Described spherical is made up of one section sphere, and described spherical contacts with the land portions face of described brake lining brake pad.
The outside along described spherical is symmetrical arranged 4 described support ratchets, and by U-shaped opening transition, the mouth end and the described section of seamlessly transitting of described U-shaped opening have a determining deviation between the adjacent described support ratchet.
Technique scheme of the present utility model has the following advantages compared to existing technology:
(1) brake pad of the present utility model constitutes floating type linkage structure by the elastic support sheet is set between brake pad and backboard, the elastic support sheet be provided for supporting the brake lining brake pad land portions spherical and be positioned at the support ratchet in the spherical outside, the support ratchet is fixed in the positioning hole of friction block, when bullet train is braked, brake pad floats by spherical and supports, can freely adjust the best effort face, brake pad is increased with the effective brake area that contacts of brake disc, alleviated the eccentric wear phenomenon of brake pad.And spherical is connected by smooth transition surface with supporting between the ratchet, when brake pad is subjected to bigger stress, stress outwards can be disperseed, and the support ratchet is outwards stretched.Than the structure of existing brake pad, the support performance of elastic support sheet of the present utility model and elasticity all improve greatly.
(2) further, in the brake pad of the present utility model, the structure of second backboard realizes that with first backboard and brake pad but floating ground is connected on the one hand, prevent the 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 that backboard is connected with brake pad by elastic collar, the connection reliability of this structure improves greatly.
(3) in the elastic support sheet of the present utility model, support ratchet and comprise one section conical junction surface and one section columniform supporting surface, junction surface and supporting surface pass through arc transition.Reduced the problem that stress is concentrated, be beneficial to the support ratchet more and outwards carry out resiliently deformable.
(3) further, in the elastic support sheet of the present utility model, its spherical is made up of edge land portions and bottom land portions, and the edge land portions contacts with the land portions face of brake lining brake pad, and leaves the gap between bottom land portions and the brake lining brake pad; This structure can make the rotation of brake pad more flexible.
(5) further, in the elastic support sheet of the present utility model, by U-shaped opening transition, the mouth end and the described section of seamlessly transitting of U-shaped opening have a determining deviation between the adjacent described support ratchet; Because the section of seamlessly transitting that supports between ratchet and the spherical is the main stress concentrated position of elastic support sheet, U-shaped opening with seamlessly transit spacer segment one segment distance and can make the supportive of elastic support sheet improve the phenomenon of having avoided the support force difference to cause ratchet to fracture.
Description of drawings
Content of the present utility model is easier clearly to be understood in order to make, and according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is the structural representation of floating type double-deck backboard brake pad of the present utility model;
Fig. 2 is the A-A sectional drawing of Fig. 1;
Fig. 3 is the structural representation of brake pad of the present utility model;
Fig. 4 is the plan view of elastic support sheet of the present utility model;
Fig. 5 is the sectional drawing of a kind of elastic support sheet of the present utility model;
Fig. 6 is the sectional drawing of another kind of elastic support sheet of the present utility model;
Fig. 7 is the riveted structure schematic representation of the utility model dorsulum and coattail board.
Reference character is expressed as among the figure:
1-first backboard, 11-positioning hole, the flat hole of 12-ream, 2-brake pad, 21-friction part, the spherical supporting portion of 22-, 23-positioning part, 24-anti-rotation projection, 3 second backboards, 31-flange hole, the 32-anti-rotation groove, 4-elastic support sheet, 41-spherical, 411-pilot hole, the 412-edge, 42-supports ratchet, the 43-section of seamlessly transitting, 421-connects edge, the 422-support edge, 423-junction surface, 424-supporting surface, 5-friction piece, the 6-locating piece, 7-dunnage, 8-coattail board, 9-rivet.
Embodiment
Below with reference to accompanying drawing, use following examples that the utility model is further set forth.
Fig. 1, Fig. 2 is floating type double-deck backboard brake pad of the present utility model, 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, but and described brake pad 2 floating grounds be connected in second backboard 3 on described first backboard 1.
Wherein, form a plurality of positioning holes 11 for connection brake pad 2 on described first backboard 1; Preferably, form the coaxial flat hole 12 of ream of a plurality of and described positioning hole 11 on described first backboard 1, place described elastic support sheet 4 on the flat hole 12 of described ream, the slightly larger in diameter in the flat hole 12 of described ream is in 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 joints on away from a side of described brake pad 2.
Described brake pad 2 comprises friction part 21, inserts the positioning part 23 of described positioning hole 11 and is arranged at spherical supporting portion 22 between described friction part 21 and the described positioning part 23, and the sphere of described spherical supporting portion 22 protrudes to described positioning part 23 directions.
Described second backboard 3 forms a plurality of flange holes 31 for the described brake pad 2 of socket, fixedlys connected between described second backboard 3 and described first backboard 1 or removably connects.In the present embodiment, described backboard 3 and 1 welding of described first backboard.
Between described brake pad 2 and described second backboard 3 rotation prevention structure is set, upwards is provided with a plurality of anti-rotation projectioies 24 week of described brake pad 2; Form on the hole wall in described flange hole 31 and described anti-rotation projection 24 anti-rotation grooves that cooperate 32.The roof of described anti-rotation groove 32 constitutes rib, is used for described anti-rotation projection 24 is arranged in the described anti-rotation groove 32, realizes that having certain amount of floating ground between described brake pad 2 and described first backboard 1 is connected.
In the present embodiment, as shown in Figure 3, described brake pad 2 is by friction piece 5, and dunnage 7 one sinter moldings; Wherein, described friction piece 5 is cylindrical, and it constitutes described friction part 21, and described dunnage 7 is the circular plate of spheric structure for the middle part, the week of described dunnage 7 upwards evenly arranges three described anti-rotation projectioies 24, and wherein land portions constitutes described spherical supporting portion 22; The described positioning part 23 of one end moulding of described locating piece 6, described positioning part 23 are passed described dunnage 7 and are inserted in the described positioning hole 11, and the other end is connected with described friction piece 5.
As Fig. 4, Fig. 5, shown in Figure 6, described elastic support sheet 4 comprises, spherical 41 is fitted and connected with described spherical supporting portion 22; The bottom centre of described spherical 41 forms and is suitable for the pilot hole 411 that described positioning part 23 is passed; Be arranged at some support ratchets 42 in described spherical 41 outsides, described support ratchet 42 extends away from described pilot hole 411 directions to bottom and the tendency of described spherical 41 from the edge 412 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 described support ratchet 42 and described connection edge 421 relative support edges 422 extend beyond the bottom of described spherical 41.
Described support ratchet 42 comprises one section conical junction surface 423 and one section columniform supporting surface 424, and described junction surface 423 passes through arc transition with described supporting surface 424.
In the 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 the gap between described bottom land portions and the described brake lining brake pad.
In other mode of executions, as shown in Figure 6, for easy to process, described spherical 41 is made up of one section sphere, and described spherical 41 contacts with the land portions face of described brake lining brake pad.
The outside along described spherical 41 is symmetrical arranged 4 described support ratchets 42, and by U-shaped opening 44 transition, the mouth end and the described section of seamlessly transitting 43 of described U-shaped opening 44 have a determining deviation between the adjacent described support ratchet 42.
Brake pad assembling of the present utility model is as follows:
Described coattail board 8 is passed through rivet with described first backboard 1, described support ratchet 42 with several described elastic support sheets 4 is positioned in the flat hole 12 of described ream again, the described positioning part 23 of several described brake pads 2 is passed respectively successively in the described positioning hole 11 of the described pilot hole 411 of described elastic support sheet 4 and described first backboard 1, again described second backboard 3 is set on the described brake pad 2, anti-rotation projection 24 on the described brake pad 2 is inserted in the anti-rotation groove 32 on described second backboard 3, make described relatively first backboard 1 of described brake pad 2 can have certain amount of floating up and down, prevent that simultaneously described brake pad 2 from rotating, and is welded to connect described second backboard 3 at last with described first backboard 1.
During braking device work, retardation pressure acts on described first backboard 1, is delivered on the described brake pad 2 by some elastic support sheets 4, and some brake pad 2 steady applying brake discs are implemented braking.Because contacting with the spherical supporting portion 22 of described brake pad 2, the spherical 41 of described elastic support sheet 4 make the brake lining brake pad can realize that the three-dimensional trace rotates, so that the fricting working surface of brake pad farthest contacts 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 removably connect by screw with described first backboard 1.
Obviously, above-described embodiment only is for example clearly is described, and is not the restriction 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 need not also can't give all mode of executions exhaustive.And the apparent variation of being extended out thus or change still are among the protection domain of the utility model creation.
Claims (10)
1. floating type double-deck backboard brake pad is characterized in that: it comprises,
First backboard (1) forms a plurality of for the positioning hole (11) that connects brake pad (2) on described first backboard (1);
Several brake pads (2), it comprises, friction part (21), insert the positioning part (23) of described positioning hole (11) and be arranged at described friction part (21) and described positioning part (23) between spherical supporting portion (22), the sphere of described spherical supporting portion (22) protrudes to described positioning part (23) direction; Described brake pad (2) realizes that by second backboard (3) and described first backboard (1) having certain amount of floating ground is connected;
Described second backboard (3) forms a plurality of flange holes (31) for the described brake pad of socket (2), fixedlys connected between described second backboard (3) and described first backboard (1) or removably connects;
Also comprise the elastic support sheet (4) that is 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 supporting portion (22); The bottom centre of described spherical (41) forms and is suitable for the pilot hole (411) that passes described positioning part (23); Be arranged at some support ratchets (42) in described spherical (41) outside, described support ratchet (42) extends away from described pilot hole (411) direction to bottom and the tendency of described spherical (41) from the edge (412) 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).
2. floating type double-deck backboard brake pad according to claim 1 is characterized in that:
Between described brake pad (2) and described second backboard (3) rotation prevention structure is set, the week of described brake pad (2) upwards is provided with a plurality of anti-rotation projectioies (24); Form the anti-rotation groove (32) that cooperates with described anti-rotation projection (24) on the hole wall in described flange hole (31).
3. floating type double-deck backboard brake pad according to claim 2 is characterized in that:
The roof of described anti-rotation groove (32) constitutes rib, is used for described anti-rotation projection (24) is arranged in the described anti-rotation groove (32), realizes that having certain amount of floating ground between described brake pad (2) and described first backboard (1) is connected.
4. according to the arbitrary described floating type double-deck backboard brake pad of claim 1-3, it is characterized in that:
Described brake pad (2) is by friction piece (5), locating piece (6) and dunnage (7) one sinter molding; Wherein, described friction piece (5) is cylindrical, it constitutes described friction part (21), described dunnage (7) is the circular plate of spheric structure for the middle part, the week of described dunnage (7) upwards evenly arranges three described anti-rotation projectioies (24), and wherein outer spherical surface partly constitutes described spherical supporting portion (22); The described positioning part of one end moulding (23) of described locating piece (6), described positioning part (23) are passed described dunnage (7) and are inserted in the described positioning hole (11), and the other end is connected with described friction piece (5).
5. floating type double-deck backboard brake pad according to claim 4 is characterized in that:
Form the coaxial flat hole of ream (12) of a plurality of and described positioning hole (11) on described first backboard (1), the flat hole of described ream (12) is gone up and is placed described elastic support sheet (4), and the slightly larger in diameter in the flat hole of described ream (12) is in the external diameter of described elastic support sheet (4).
6. floating type double-deck backboard brake pad according to claim 5 is characterized in that:
Described first backboard (1) has coattail board (8) in side welding or the riveted joint away from described brake pad (2).
7. floating type double-deck backboard brake pad according to claim 6 is characterized in that:
Described support ratchet (42) comprises one section conical junction surface (423) and one section columniform supporting surface (424), and described junction surface (423) passes through arc transition with described supporting surface (424).
8. floating type double-deck backboard brake pad according to claim 7 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 the gap between described bottom land portions and the described brake lining brake pad.
9. floating type double-deck backboard brake pad according to claim 7 is characterized in that:
Described spherical (41) is made up of one section sphere, and described spherical (41) contacts with the land portions face of described brake lining brake pad.
10. floating type double-deck backboard brake pad according to claim 7 is characterized in that:
The outside along described spherical (41) is symmetrical arranged 4 described support ratchets (42), by U-shaped opening (44) transition, the mouth end and the described section of seamlessly transitting (43) of described U-shaped opening (44) have a determining deviation between the adjacent described support ratchet (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320069327 CN203161918U (en) | 2013-02-06 | 2013-02-06 | Floating double-back-plate brake pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320069327 CN203161918U (en) | 2013-02-06 | 2013-02-06 | Floating double-back-plate brake pad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203161918U true CN203161918U (en) | 2013-08-28 |
Family
ID=49023104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320069327 Withdrawn - After Issue CN203161918U (en) | 2013-02-06 | 2013-02-06 | Floating double-back-plate brake pad |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203161918U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133568A (en) * | 2013-02-06 | 2013-06-05 | 北京天宜上佳新材料有限公司 | Floating type double-layer back plate brake pad |
| WO2014121704A1 (en) * | 2013-02-06 | 2014-08-14 | 北京天宜上佳新材料有限公司 | Floating type brake pad for train |
| CN106678206A (en) * | 2015-09-28 | 2017-05-17 | 北京浦然轨道交通科技有限公司 | Adjustable floating brake pad |
-
2013
- 2013-02-06 CN CN 201320069327 patent/CN203161918U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133568A (en) * | 2013-02-06 | 2013-06-05 | 北京天宜上佳新材料有限公司 | Floating type double-layer back plate brake pad |
| WO2014121704A1 (en) * | 2013-02-06 | 2014-08-14 | 北京天宜上佳新材料有限公司 | Floating type brake pad for train |
| CN103133568B (en) * | 2013-02-06 | 2016-04-13 | 北京天宜上佳新材料有限公司 | Floating type double-layer back plate brake pad |
| EA029606B1 (en) * | 2013-02-06 | 2018-04-30 | Бейджинг Тяньишанцзя Нью Матириал Корп., Лтд | Floating brake pad for a train |
| CN106678206A (en) * | 2015-09-28 | 2017-05-17 | 北京浦然轨道交通科技有限公司 | Adjustable floating brake pad |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130828 Effective date of abandoning: 20160413 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |