CN103133569A - Floating brake pad - Google Patents
Floating brake pad Download PDFInfo
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- CN103133569A CN103133569A CN2013100475792A CN201310047579A CN103133569A CN 103133569 A CN103133569 A CN 103133569A CN 2013100475792 A CN2013100475792 A CN 2013100475792A CN 201310047579 A CN201310047579 A CN 201310047579A CN 103133569 A CN103133569 A CN 103133569A
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Abstract
The invention discloses a floating brake pad which comprises a pad back plate, a friction block, a clamp spring, an elastic support sheet arranged between the friction block and the pad back plate. The elastic support sheet comprises a spherical support surface and a support pawl on the outer side of the spherical support surface, wherein the spherical support surface is bonded with a spherical support part of the friction block, and a guiding hole suitable for a positioning part of the friction block to penetrate through is formed at the bottom center of the spherical support surface. The support pawl extend to the bottom of the spherical support surface from the periphery of the spherical support surface in the direction away from the guiding hole, the connection edge of the support pawl is connected with the periphery of the spherical support surface through a smooth transition section, and the support pawl and the support edge extend out of the bottom of the spherical support surface. The floating brake pad solves the problem that a pawl of the elastic support part of the existing brake pad is bent inwards instead of extending outwards, so that when stressed, the elastic support can extend outwards along the direction of the support pawl, and support of the corresponding part cannot fail.
Description
Technical field
The present invention relates to a kind of floating type brake pad, belong to the train braking technical field.
Background technique
At present, in the high-speed train braking device, what usually adopt is the disc type brake structure.The disc type brake structure mainly comprises brake disc and brake pad, and above-mentioned brake structure has consumed the kinetic energy of moving vehicle or equipment by the phase mutual friction of brake disc with brake pad, makes the train stop motion.But, what generally adopt due to brake pad is the mode that rivet is fixedly connected with, so when braking, be prone to the phenomenon that to fit fully between brake pad on brake pad and brake disc, make acting on brake pad and brake disc that active force can not be average, thereby the high stress point that causes brake pad crackle occurs, falls piece, damaged, produces the localized hyperthermia district, shortened working life of brake pad, affects braking effect.
For addressing the above problem, Chinese patent CN102384195A discloses a kind of composite floating type brake pad, this brake pad is the scotch block assembly that symmetric arrays distributes on supporting plate, scotch block assembly comprises: the brake pad, convex surface seat, concave surface seat, connecting rod and the pin that are sintered to one by brake slipper and base plate, the convex surface seat is fixed on the base plate of brake pad, the concave surface seat of the concave spherical that installing on the protruding sphere of convex surface seat matches with protruding spheric rotates.The floating type brake pad of combinations thereof, by the convex surface seat is fixed on the brake pad base plate, and concave surface seat with matching is set between base plate and convex surface seat, and make between brake pad and base plate and form floating structure, can the retardation pressure of proportionality action on supporting plate.But there is following problem in said structure: 1. the convex surface seat does not have elasticity, can't satisfy simultaneously brake pad in the vertical direction with substantially horizontal on freely adjust, brake pad is difficult to freely to adjust to the best effort face; 2. the linkage structure between brake pad and convex surface seat can cause producing frictional force between brake pad and convex surface seat, and reduced the working life of brake pad.
For never having flexible structure, solution is difficult to make brake pad freely to adjust to the problem of best effort face, Chinese patent literature CN102401047 discloses a kind of elastic support sheet, comprises spherical part, centre pilot bore portion and fixed support ratchet part.By above-mentioned elastic support sheet is arranged between brake pad and base plate, can make train when braking, the brake pad of brake lining can not only freely be adjusted in the elastic support sheet spherical, satisfy that position on the support plate substantially horizontal is adjusted and the direction vertical with support plate to a certain extent on the position adjustment, and the setting due to the fixed support ratchet, make support plate with structural elasticity, can satisfy the position adjustment of brake pad on the support plate Vertical direction, improve effective friction area of brake pad and brake disc.But, between fixed pawl in this technological scheme and spherical by having the right angle transition of several angle, when brake pad when being subject to the crunch that at a high speed braking brings, the angle of described transitional surface produces larger shearing stress, thereby causing the part ratchet outwards not upheld bends inwards on the contrary, the support of appropriate section was lost efficacy, even cause the damage that fractures of the ratchet of this part.
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 of the support inefficacy of appropriate section, 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, floating type brake pad of the present invention comprises the brake lining backboard, forms a plurality of positioning holes on described brake lining 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 the supporting portion, described supporting portion is spheric structure, the sphere of described supporting portion protrudes to described positioning part direction; Several jump rings, it is connected on described positioning part, and described brake pad is connected on described brake lining backboard with having certain amount of floating;
Also comprise the elastic support sheet that is arranged between described brake pad and described brake lining backboard, described elastic support sheet comprises: spherical is fitted and connected with described supporting portion; The bottom of described spherical is provided with and is suitable for the pilot hole that described positioning part is passed; Be arranged at the support ratchet in the described spherical outside, described support ratchet extends away from described pilot hole direction to described spherical bottom and tendency 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 on described support ratchet, the support edge relative with described connection edge extends to the bottom that surpasses described spherical.
Described brake pad is by friction piece, locating piece and dunnage one sinter molding, and wherein, described friction piece consists of described friction part, and described dunnage is that the middle part is the thin plate of spheric structure, and wherein outer spherical surface partly consists of described supporting portion; One end moulding described positioning part 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.
Form a plurality of and described positioning hole coaxial flat hole of ream on described brake lining backboard, described ream is placed described elastic support sheet on flat hole, and the slightly larger in diameter in described ream flat hole is in the external diameter of described elastic support sheet.
Described jump ring is by the spring steel bending and molding, and it comprises two supporting legs and circular collar, and described circular collar is connected in the locating groove of described positioning part.
Described support ratchet comprises: one section conical junction surface and one section columniform supporting surface, described junction surface and described supporting surface pass through arc transition.
The cone angle of described junction surface is 90-150 °.
Described spherical, formed by 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 described supporting portion face of described brake pad, and leaves the gap between the described supporting portion of described bottom land portions and described brake pad.
Described spherical is comprised of one section sphere, and described spherical contacts with the described supporting portion face of described brake pad.
Between adjacent described support ratchet, by U-shaped opening transition, the mouth end and the described section of seamlessly transitting of described U-shaped opening have a determining deviation.
The outside along described spherical is symmetrical arranged 4 described support ratchets.
Technique scheme of the present invention has the following advantages compared to existing technology:
(1) floating type brake pad of the present invention, be provided with elastic support sheet between described brake pad and described brake lining backboard, described elastic support sheet comprises spherical and supports ratchet, described support ratchet extends away from described pilot hole direction to described spherical bottom and tendency 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, on described support ratchet, the support edge relative with described connection edge extends to the bottom that surpasses described spherical, seamlessly transit and to make stress better average, the phenomenon that can not cause the part to lose, avoided the inside bending of support ratchet of elastic support sheet to cause supporting the problem of inefficacy.The support edge relative with described connection edge extends to the bottom that surpasses described spherical on described support ratchet, make the bottom of spherical be in vacant state when not being subjected to stress, form floating type structure, when elastic support sheet is subject to stress, can provide larger amount of elasticity.
(2) brake pad of floating type brake pad of the present invention is by friction piece, locating piece and dunnage one sinter molding, friction piece, locating piece and dunnage are integrated by sinter molding, can avoid producing wearing and tearing between friction piece and locating piece, cause the problem of the reduction in working life of brake pad.
(3) form a plurality of reams flat holes on the brake lining backboard of floating type brake pad of the present invention, be set to be slightly larger than the external diameter of elastic support sheet for the flat bore dia of ream of placing described elastic support sheet, the ratchet that can be elastic support sheet provides enough extending spaces when stretched out by stress, can prevent from also simultaneously that ratchet from excessively stretching out can't reply after causing elastic support sheet deformation failure, external force to remove.
(4) the support ratchet of floating type brake pad Elastic support plate of the present invention comprises one section conical junction surface and one section columniform supporting surface, and junction surface and supporting surface pass through arc transition.Support ratchet and formed by conical junction surface and cylindrical support face by arc transition, the stress that can well evenly be subject to, the phenomenon of avoiding the part of elastic support sheet to occur losing.
(5) in floating type brake pad of the present invention, between the adjacent supports ratchet of elastic support sheet, by U-shaped opening transition, the mouth end and the described section of seamlessly transitting of U-shaped opening have a determining deviation.U-shaped opening can make each support ratchet and not interfere with each other when stretching out, and can play respectively good buffer function when being subject to the stress of different direction.
Description of drawings
For content of the present invention is more likely to be clearly understood, the 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 brake pad of the present invention;
Fig. 2 is the sectional view of floating type brake pad of the present invention;
Fig. 3 is the partial schematic diagram of Fig. 2;
Fig. 4 is the structural representation of the brake pad of floating type brake pad of the present invention;
Fig. 5 is the partial sectional view of the brake lining backboard of floating type brake pad of the present invention;
Fig. 6 is the structural representation of the jump ring of floating type brake pad of the present invention;
Fig. 7 is the stereogram of the elastic support sheet of floating type brake pad of the present invention;
Fig. 8 is the sectional view of the elastic support sheet of the floating type brake pad in embodiment 1;
Fig. 9 is the sectional view of the elastic support sheet of the floating type brake pad in embodiment 2;
In figure, reference character is expressed as: 1-brake lining backboard; The 11-positioning hole; The flat hole of 12-ream; The 2-elastic support sheet; The 21-spherical; The 211-pilot hole; The 212-edge; 22-supports ratchet; 221-connects edge; The 222-support edge; 223-U type opening; The a-junction surface; The b-supporting surface; C-edge land portions; D-bottom land portions; The 23-section of seamlessly transitting; The 3-brake pad; The 31-friction part; The 3a-friction piece; The 32-positioning part; The 320-locating groove; The 3b-locating piece; The 33-supporting portion; The 3c-dunnage; The 4-jump ring; The 41-supporting leg; The circular collar of 42-.
Embodiment
Below with reference to accompanying drawing, use following examples that the present invention is further set forth.
Embodiment 1
Be depicted as floating type brake pad of the present invention as Fig. 1-8, it comprises: the brake lining backboard 1 that forms a plurality of positioning holes 11; Several brake pads 3, it comprises, friction part 31 inserts the positioning part 32 of described positioning hole 11 and is arranged at supporting portion 33 between described friction part 31 and described positioning part 32, described supporting portion 33 is spheric structure, and the sphere of described supporting portion 33 protrudes to described positioning part 32 directions; Several jump rings 4, its described jump ring are connected on described positioning part 32, and described brake pad 3 is connected on described brake lining backboard 1 with having certain amount of floating; Also comprise the elastic support sheet 2 that is arranged between described brake pad 3 and described brake lining backboard 1, described elastic support sheet 2 comprises: spherical 21, be fitted and connected with described supporting portion 33, the bottom of described spherical 21 is provided with and is suitable for the pilot hole 211 that described positioning part 32 is passed; Be arranged at the support ratchet 22 in described spherical 21 outsides, described support ratchet 22 from the edge 212 of described spherical 21 to described spherical 21 bottoms and tendency extend away from described pilot hole 211 directions; The connection edge 221 of described support ratchet 22 is connected by the section of seamlessly transitting 23 with the edge of described spherical 21, and on described support ratchet 22, the support edge 222 relative with described connection edge 221 extends to the bottom that surpasses described spherical 21.
When braking device was worked, retardation pressure acted on described brake lining backboard 1, was delivered on described brake pad 3 by some elastic support sheets 2, and the steady applying brake disc of some brake pads 3 is implemented braking.Because contacting with the supporting portion 33 of described brake pad 3, the spherical 21 of described elastic support sheet 2 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.
Need to prove, for realizing purpose of the present invention, the molding mode of described brake pad 3 is not unique, and it is preferred embodiment a kind of that the present embodiment provides, as shown in Figure 4, described brake pad 3 is by friction piece 3a, locating piece 3b and dunnage 3c one sinter molding, wherein, described friction piece 3a consists of described friction part 31, described dunnage 3c is that the middle part is the thin plate of spheric structure, and wherein outer spherical surface partly consists of described supporting portion 33, and its profile is consistent with the profile of described brake pad 3; The end moulding described positioning part 32 of described locating piece 3b, described positioning part 32 is passed described dunnage 3c and is inserted in described positioning hole 11, and the other end is connected with described friction piece 3a.Such mode of execution can be avoided between friction piece and locating piece producing wearing and tearing and cause the problem that reduces in working life of brake pad.
Simultaneously, the shape of described brake pad 3 is not unique yet, as long as it guarantee intermeshes between adjacent brake pad, realizes the locking of described brake pad 3 substantially horizontal in the mounting plane of described brake lining backboard 1.In the present embodiment, the pentagon that to be shaped as a limit be arc of described brake pad 3, having limit of arc and the curved portion of backboard fits substantially, the straight flange of other straight flanges and adjacent described brake pad 3 locks mutually, described brake pad 3 can only be offset by trace, and can not rotate in the horizontal direction.
Same, for realizing purpose of the present invention, the molding mode of described jump ring 4 is not unique yet, the present embodiment provides a kind of concrete design, as shown in Figure 6, described jump ring 4 is by the spring steel bending and molding, and it comprises two supporting legs 41 and circular collar 42, and described circular collar 42 is connected in the locating groove 320 of described positioning part 32.
In order to have enough extending spaces when stretched out by stress at the ratchet of elastic support sheet, preventing also simultaneously that ratchet from excessively stretching out can't reply after causing elastic support sheet deformation failure, external force to remove, as shown in Figure 5, form the coaxial ream of a plurality of and described positioning hole 11 flat hole 12 on described brake lining backboard 1, place described elastic support sheet 2 on the flat hole 12 of described ream, the slightly larger in diameter in described ream flat hole 12 is in the external diameter of described elastic support sheet 2.
In order better evenly to support the stress that ratchet is subject to, the phenomenon of avoiding the part of elastic support sheet to occur losing, described support ratchet 22 can be set to following structure: as shown in Figure 8, described support ratchet 22 is comprised of one section conical junction surface a and one section columniform supporting surface b, and described junction surface a and described supporting surface b pass through arc transition.Wherein, the cone angle of described junction surface a is not unique, can get the arbitrary value in 90-150 °, in the present embodiment, provides a kind of preferred design, and the cone angle of described junction surface a is 130 °.Same, for realizing purpose of the present invention, the quantity of described support ratchet 22 is not unique yet, and a kind of concrete design is provided in the present embodiment, is symmetrical arranged 4 described support ratchets 22 along the outside of described spherical 21.
For the slipping that makes brake pad more flexible, in the present embodiment, described spherical 21, formed by edge land portions c and bottom land portions d, the radius of curvature of described edge land portions c is less than the radius of curvature of described bottom land portions d, described edge land portions c directly contacts with the described supporting portion 33 of described brake pad 3, and leaves the gap between the described supporting portion 33 of described bottom land portions d and described brake pad 3.
Do not interfere with each other when stretching out for making each support ratchet, can play respectively good buffer function when being subject to the stress of different direction, between adjacent described support ratchet 22, by U-shaped opening 223 transition, the mouth end and the described section of seamlessly transitting 23 of described U-shaped opening 223 have a determining deviation.
Embodiment 2
The present embodiment and embodiment's 1 structure is basic identical, and the distinctive points of existence is:
As shown in Figure 9, in the present embodiment, described spherical 21 is comprised of one section sphere, described spherical 21 contacts with 33 of the described supporting portions of described brake pad 3, form described spherical 21 by edge land portions c and bottom land portions d to replace in embodiment 1, in the present embodiment, the set-up mode of described spherical 21 makes the machining operation of elastic support sheet convenient.
Obviously, above-described embodiment is only 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 invention.
Claims (10)
1. floating type brake pad comprises:
Brake lining backboard (1) forms a plurality of positioning holes (11) on described brake lining backboard (1);
Several brake pads (3), it comprises, friction part (31), insert the positioning part (32) of described positioning hole (11) and be arranged at described friction part (31) and described positioning part (32) between supporting portion (33), described supporting portion (33) is spheric structure, and the sphere of described supporting portion (33) protrudes to described positioning part (32) direction;
Several jump rings (4), it is connected on described positioning part (32), and described brake pad (3) is connected on described brake lining backboard (1) with having certain amount of floating; It is characterized in that,
Also comprise the elastic support sheet (2) that is arranged between described brake pad (3) and described brake lining backboard (1), described elastic support sheet (2) comprising:
Spherical (21) is fitted and connected with described supporting portion (33); The bottom of described spherical (21) is provided with and is suitable for the pilot hole (211) that passes described positioning part (32);
Be arranged at the support ratchet (22) in described spherical (21) outside, described support ratchet (22) extends away from described pilot hole (211) direction to described spherical (21) bottom and tendency from the edge (212) of described spherical (21); The connection edge (221) of described support ratchet (22) is connected by the section of seamlessly transitting (23) with the edge of described spherical (21), and the upper support edge (222) relative with described connection edge (221) of described support ratchet (22) extends to the bottom that surpasses described spherical (21).
2. floating type brake pad according to claim 1, it is characterized in that, described brake pad (3) is by friction piece (3a), locating piece (3b) and dunnage (3c) one sinter molding, wherein, described friction piece (3a) consists of described friction part (31), and described dunnage (3c) is the thin plate of spheric structure for the middle part, and wherein outer spherical surface partly consists of described supporting portion (33); The one described positioning part of end moulding (32) of described locating piece (3b), described positioning part (32) are passed described dunnage (3c) and are inserted in described positioning hole (11), and the other end is connected with described friction piece (3a).
3. floating type brake pad according to claim 1 and 2, it is characterized in that, form a plurality of and described positioning hole (11) the coaxial flat hole of ream (12) on described brake lining backboard (1), the upper described elastic support sheet (2) of placing in the flat hole of described ream (12), the slightly larger in diameter in the flat hole of described ream (12) is in the external diameter of described elastic support sheet (2).
4. the described floating type brake pad of according to claim 1-3 any one, it is characterized in that, described jump ring (4) is by the spring steel bending and molding, it comprises two supporting legs (41) and circular collar (42), and described circular collar (42) is connected in the locating groove (320) of described positioning part (32).
5. the described floating type brake pad of according to claim 1-4 any one, it is characterized in that, described support ratchet (22) comprising: one section conical junction surface (a) and one section columniform supporting surface (b), described junction surface (a) passes through arc transition with described supporting surface (b).
6. floating type brake pad according to claim 5, is characterized in that, the cone angle of described junction surface (a) is 90-150 °.
7. the described floating type brake pad of according to claim 1-6 any one, it is characterized in that: described spherical (21), formed by edge land portions (c) and bottom land portions (d), the radius of curvature of described edge land portions (c) is less than the radius of curvature of described bottom land portions (d), described edge land portions (c) contacts with described supporting portion (33) face of described brake pad (3), and leaves the gap between the described supporting portion (33) of described bottom land portions (d) and described brake pad (3).
8. the described floating type brake pad of according to claim 1-6 any one, it is characterized in that: described spherical (21) is comprised of one section sphere, and described spherical (21) contacts with described supporting portion (33) face of described brake pad (3).
9. the described floating type brake pad of according to claim 1-8 any one, it is characterized in that: between adjacent described support ratchet (22), by U-shaped opening (223) transition, the mouth end and the described section of seamlessly transitting (23) of described U-shaped opening (223) have a determining deviation.
10. the described floating type brake pad of according to claim 1-9 any one, it is characterized in that: the outside along described spherical (21) is symmetrical arranged 4 described support ratchets (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310047579.2A CN103133569B (en) | 2013-02-06 | 2013-02-06 | Floatation type brake pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310047579.2A CN103133569B (en) | 2013-02-06 | 2013-02-06 | Floatation type brake pad |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103133569A true CN103133569A (en) | 2013-06-05 |
| CN103133569B CN103133569B (en) | 2016-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310047579.2A Active CN103133569B (en) | 2013-02-06 | 2013-02-06 | Floatation type brake pad |
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| CN (1) | CN103133569B (en) |
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| 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 |
| 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 |
| CN105065521A (en) * | 2015-09-08 | 2015-11-18 | 湖南鼎懋科技有限公司 | Brake pad assembly structure for train |
| CN105587802A (en) * | 2015-09-28 | 2016-05-18 | 北京浦然轨道交通科技有限公司 | Powder metallurgy friction piece assembly of brake pad |
| CN106641035A (en) * | 2016-11-30 | 2017-05-10 | 北京天宜上佳新材料股份有限公司 | Automotive brake pad |
| CN107574943A (en) * | 2017-08-03 | 2018-01-12 | 昆明理工大学 | A kind of shock isolating pedestal installation method of the asymmetric flanged plate of buckle-type |
| TWI621788B (en) * | 2015-12-25 | 2018-04-21 | Nippon Steel & Sumitomo Metal Corp | Brake for railway vehicles and disc brakes for railway vehicles using the brakes |
| DE112018004539T5 (en) | 2017-10-16 | 2020-05-28 | Beijing Tianyishangjia New Material Corp., Ltd. | Protective cushion for a friction body of a brake pad and brake pad |
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| AT522675A5 (en) * | 2017-10-16 | 2021-01-15 | Beijing Tianyishangjia New Mat Corp Ltd | Protective cushion for a friction body from a brake pad and brake pad |
| AT522675B1 (en) * | 2017-10-16 | 2021-07-15 | Beijing Tianyishangjia New Mat Corp Ltd | Protective cushion for a friction body from a brake pad and brake pad |
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| CN103133569B (en) | 2016-04-06 |
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