Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
  • F16D65/00—Parts or details
  • F16D65/02—Braking members; Mounting thereof
  • F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
  • F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
  • F16D65/095—Pivots or supporting members therefor
  • F16D65/097—Resilient means interposed between pads and supporting members or other brake parts
  • F16D65/0973—Resilient means interposed between pads and supporting members or other brake parts not subjected to brake forces
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
  • F16D65/00—Parts or details
  • F16D65/02—Braking members; Mounting thereof
  • F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
  • F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B61—RAILWAYS
  • B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
  • B61H5/00—Applications or arrangements of brakes with substantially radial braking surfaces pressed together in axial direction, e.g. disc brakes
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
  • F16D65/00—Parts or details
  • F16D65/02—Braking members; Mounting thereof
  • F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
  • F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
  • F16D65/095—Pivots or supporting members therefor
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
  • F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
  • F16D69/04—Attachment of linings
  • F16D69/0408—Attachment of linings specially adapted for plane linings
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
  • F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
  • F16D69/04—Attachment of linings
  • F16D2069/0425—Attachment methods or devices
  • F16D2069/0433—Connecting elements not integral with the braking member, e.g. bolts, rivets
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
  • F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
  • F16D69/04—Attachment of linings
  • F16D2069/0425—Attachment methods or devices
  • F16D2069/0441—Mechanical interlocking, e.g. roughened lining carrier, mating profiles on friction material and lining carrier

Definitions

• the invention relates to a floating brake pad for trains, belonging to the technical field of train braking.
• the disc brake structure mainly comprises a brake disc and a brake pad.
• the above brake structure rubs the friction between the brake disc and the brake disc, and consumes the kinetic energy of the moving vehicle or the device to stop the train.
• the brake ram is generally used in the manner of fixed connection of the rivet, when braking, the friction block on the brake pad and the brake disc are not completely fitted, so that the force cannot be averaged.
• the function of the friction block and the brake disc causes cracks, falling blocks and defects at the high stress point of the brake pad, resulting in local high temperature zone, shortening the service life of the brake pad and affecting the braking effect. .
• Cik Patent No. CN102384195A discloses a combined floating brake pad which is a brake block assembly symmetrically arranged on a pallet, the brake block assembly comprising: a brake block and a bottom plate Sintered as a friction block, a convex seat, a concave seat, a connecting rod and a pin, the convex seat is fixed on the bottom plate of the friction block, and a concave spherical surface concave seat which is rotated in cooperation with the convex spherical surface is mounted on the convex spherical surface of the convex seat .
• the above-mentioned combined floating brake pad can form a floating structure between the friction block and the bottom plate by fixing the convex seat on the bottom plate of the friction block and providing a concave seat seat matched between the bottom plate and the convex seat. Balance the brake pressure on the pallet.
• the above structure has the following problems: 1.
• the convex seat does not have elasticity, and the free adjustment of the friction block in the vertical direction and the horizontal direction cannot be simultaneously satisfied, and the friction block is difficult to freely adjust to the optimal working surface; 2.
• the friction block and the convex seat The connection structure between the two causes friction between the friction block and the convex seat, which reduces the service life of the friction block.
• the Chinese patent document CN102401047 discloses an elastic support piece including a spherical support surface portion, a central guide hole portion, and a fixed support pawl portion. .
• the friction block of the brake piece can be freely adjusted not only in the spherical supporting surface of the elastic supporting piece when the train is braking, but also satisfies the position adjustment in the horizontal direction of the supporting piece.
• the support piece has structural elasticity, which can satisfy the positional adjustment of the friction block in the vertical direction of the support piece, Increase the effective friction area of the friction block and the brake disc.
• the fixed pawl and the spherical supporting surface in the technical solution pass through a right angle transition with a certain angle, and when the friction block is subjected to strong pressure brought by high-speed braking, the angle of the transition surface is greatly cut. The stress causes the partial pawl not to extend outward but to bend inward, thereby invalidating the support of the corresponding portion, and even causing the pawl of the portion to be broken and damaged.
• the technical problem to be solved by the present invention is that the elastic support member portion of the existing train brake pad does not extend outward and is bent inward, so that the support of the corresponding portion fails, thereby providing a stable A brake pad that reliably fits the friction block to the brake disc.
• the floating brake pad for train of the present invention comprises a back plate, and the two back plates are spliced into a brake back plate; the back plate is formed with a plurality of positioning holes; a block, the friction portion, a positioning portion inserted into the positioning hole, and a support portion disposed between the friction portion and the positioning portion, the support portion is a spherical structure, and the ball portion of the support portion faces The positioning portion protrudes in a direction; a plurality of snap springs are coupled to the positioning portion, and the friction block is coupled to the back plate with a certain amount of floating.
• the elastic support piece disposed between the friction block and the back plate, the elastic support piece includes: a spherical support surface, which is in close contact with the support portion; a guiding hole passing through the positioning portion; a supporting pawl disposed outside the spherical supporting surface, the supporting pawl extending from an edge of the spherical supporting surface toward a bottom of the spherical supporting surface and inclined away from the guiding a connecting direction of the supporting pawl and an edge of the spherical supporting surface are connected by a smooth transition section, and a supporting edge of the supporting pawl opposite to the connecting edge extends beyond the spherical supporting surface bottom.
• the back plate is welded or riveted with a dovetail plate on a side away from the friction block.
• the friction block is integrally sintered by the friction body, the positioning member and the support plate, wherein the friction body constitutes the friction portion, and the support plate is a thin plate having a spherical structure in the middle, wherein the outer spherical portion constitutes the support
• the positioning portion is formed at one end of the positioning member, the positioning portion passes through the support plate and is inserted into the positioning hole, and the other end is connected to the friction body.
• the elastic support piece is placed on the flat hole, and the diameter of the flat hole is slightly larger than the outer side of the elastic support piece path.
• the circlip is formed by spring steel bending, and includes two legs and a circular collar.
• the circular collar is engaged in the positioning slot of the positioning portion.
• the support pawl comprises: a section of conical connecting surface and a section of cylindrical supporting surface, the connecting surface and the supporting surface transitioning through a circular arc.
• the connecting surface has a taper angle of 90-150°.
• the spherical supporting surface is composed of an edge spherical portion having a radius of curvature smaller than a radius of curvature of the bottom spherical portion, and a bottom spherical portion having a radius of curvature of the bottom spherical portion and the supporting portion of the friction block Contact, and a gap is left between the bottom spherical portion and the support portion of the friction block.
• the spherical support surface is composed of a length of spherical surface that is in surface contact with the support portion of the friction block.
• the adjacent support pawls are transitioned through a U-shaped opening, and the bottom of the U-shaped opening has a certain distance from the smooth transition section.
• the floating brake pad for train of the present invention wherein an elastic support piece is disposed between the friction block and the back plate, the elastic support piece includes a spherical support surface and a support pawl, and the support a pawl extending from an edge of the spherical supporting surface toward a bottom of the spherical supporting surface and inclined away from the guiding hole, and a connecting edge of the supporting pawl and an edge of the spherical supporting surface are connected by a smooth transition section
• the supporting edge of the supporting pawl opposite to the connecting edge extends beyond the bottom of the spherical supporting surface, and the smooth transition can make the stress better average without causing local breakage, and avoiding the elastic supporting piece Supporting the pawl to bend inward causes the support to fail.
• a supporting edge on the supporting pawl opposite to the connecting edge extends beyond the bottom of the spherical supporting surface, so that the bottom of the spherical supporting surface is in a suspended state when unstressed, forming a floating structure, When the elastic support piece is stressed, it can provide a greater amount of elasticity.
• the friction block of the floating brake pad for train of the present invention is integrally sintered by the friction body, the positioning member and the support plate, and the friction body, the positioning member and the support plate are integrally formed by sintering, thereby avoiding the friction body and Wear occurs between the positioning members, causing a problem that the service life of the friction blocks is lowered.
• the floating plate of the floating brake pad for train of the present invention is formed with a plurality of flat holes, and the diameter of the flat hole for placing the elastic support piece is set to be slightly larger than the outer diameter of the elastic support piece.
• the pawl of the elastic support piece can provide sufficient expansion space when being extended outward by stress, and can also prevent the elastic support piece from being deformed and deformed due to excessive outward extension of the pawl, and the external force cannot be recovered after being removed.
• the supporting pawl of the elastic supporting piece in the floating brake pad for train of the present invention comprises a conical connecting surface and a cylindrical supporting surface, and the connecting surface and the supporting surface are transitioned by a circular arc.
• the supporting pawl is composed of a circular conical connecting surface and a cylindrical supporting surface which are transitioned through a circular arc, and can well receive the stress uniformly and avoid the partial breakage of the elastic supporting piece.
• the adjacent support pawls of the elastic support piece are transitioned through the U-shaped opening, and the mouth bottom of the U-shaped opening has a certain distance from the smooth transition section.
• the U-shaped opening allows the respective supporting pawls to not interfere with each other when extending outward, and can be well buffered when subjected to stress in different directions.
• FIG. 1 is a schematic structural view of a back plate of a floating brake pad for a train of the present invention
• FIG. 2 is a schematic structural view showing the splicing of two back plates of the floating brake pad for trains according to the present invention
• 3 is a schematic structural view showing a dovetail plate of a floating brake pad for a train mounted on a back plate of the present invention
• FIG. 4 is a partial cross-sectional view of the floating brake pad for a train of the present invention
• Figure 5 is a schematic structural view of a friction block of a floating brake pad for a train of the present invention
• Figure 6 is a partial cross-sectional view showing the back plate of the floating brake pad for train of the present invention.
• FIG. 7 is a schematic structural view of a circlip of a floating brake pad for a train according to the present invention.
• Figure 8 is a perspective view of the elastic support piece of the floating brake pad for train of the present invention.
• Figure 9 is a cross-sectional view showing the elastic supporting piece of the floating brake pad for trains in Embodiment 1;
• Figure 10 is a cross-sectional view showing an elastic supporting piece of the floating brake pad for trains in Embodiment 2;
• 3a-friction body 32-positioning portion; 320-positioning card slot; 3b-positioning member; 33-support portion; 3c-support plate; 4-circle spring; 41-leg; 42-circular collar.
• FIG. 1-9 shows a floating brake pad for a train according to the present invention, which includes: a back plate 1 formed with a plurality of positioning holes 11, and two of the back plates 1 are spliced into a back plate of the brake; a friction block 3, comprising: a friction portion 31, a positioning portion 32 inserted into the positioning hole 11, and a support portion 33 disposed between the friction portion 31 and the positioning portion 32, the support portion 33 being a spherical surface a structure, the ball of the support portion 33 protrudes toward the positioning portion 32; a plurality of circlips 4, the circlip 4 of the circlip 4 is engaged with the positioning portion 32, and the friction block 3 has a certain floating
• the elastic support piece 2 is disposed between the friction block 3 and the back plate 1 , and the elastic support piece 2 includes: a spherical support surface 21, The supporting portion 33 is affixed and connected, and the bottom of the spherical supporting surface 21 is provided with a guiding hole 211 adapted to
• brake pressure acts on the backing plate 1 and is transmitted to the friction block 3 through a plurality of elastic support pieces 2, and the friction blocks 3 are smoothly fitted to the brake disk to perform braking. Since the spherical supporting surface 21 of the elastic supporting piece 2 is in contact with the supporting portion 33 of the friction block 3, the brake pad can realize three-way micro-rotation to make friction The frictional working surface of the block is in contact with the brake disc to the greatest extent, preventing the problem of eccentric wear of the friction block.
• the dovetail plate 1 is also fixed with a dovetail plate 8 on a side away from the friction block 2.
• the manner of fixing the dovetail plate 8 includes, but is not limited to, welding or riveting.
• the dovetail plate 8 is provided with a riveting hole, and the dovetail plate 8 is mounted on the back plate 1 by rivets. on.
• the friction block 3 is not uniquely formed.
• the friction block 3 is The friction body 3a, the positioning member 3b and the support plate 3c are integrally formed by sintering, wherein the friction body 3a constitutes the friction portion 31, and the support plate 3c is a thin plate having a spherical structure in the middle, wherein the outer spherical portion constitutes the
• the support portion 33 has an outer shape conforming to the outer shape of the friction block 3; one end of the positioning member 3b forms the positioning portion 32, and the positioning portion 32 passes through the support plate 3c and is inserted into the positioning hole 11 The other end is connected to the friction body 3a.
• Such an embodiment avoids the problem that wear between the friction body and the positioning member is caused to cause a decrease in the service life of the friction block.
• the shape of the friction block 3 is not unique, as long as the mutual friction between the adjacent friction blocks is ensured, and the horizontal locking of the friction block 3 in the mounting plane of the back plate 1 is achieved.
• the friction surface of the friction block 3 located at the middle of the back plate of the shutter has two parallel straight sides, and the two ends of the parallel straight sides are connected by a circular arc;
• the curved portions of the backing plate 1 are substantially fitted; the straight side portions are locked to each other, so that the friction blocks 3 can only be slightly offset, and cannot be rotated in the horizontal direction.
• the friction block 3 located at the end of the shutter back plate is a block having a pentagonal cross section with an arc curved, wherein the curved edge is close to the curved portion of the back plate 1, and other straight sides
• the straight edges of the adjacent friction blocks 3 are interlocked with each other, so that the friction blocks 3 can only be slightly displaced, and cannot be rotated in the horizontal direction.
• the forming manner of the circlip 4 is not unique.
• This embodiment provides a specific design. As shown in FIG. 7, the circlip 4 is folded by a spring steel. The bending is formed, which includes two legs 41 and a circular collar 42 . The circular collar 42 is engaged in the positioning slot 320 of the positioning portion 32 .
• the back plate 1 is formed with a plurality of flat holes 12 coaxial with the positioning holes 11, and the elastic support piece 2 is placed on the flat hole 12, and the diameter of the flat hole 12 is slightly larger than The outer diameter of the elastic support piece 2 is described.
• the support pawl 22 can be configured as follows: As shown in FIG. 9, the support pawl 22 is composed of a section The conical connecting surface a and a cylindrical supporting surface b are formed, and the connecting surface a and the supporting surface b are transitioned by a circular arc. Wherein, the taper angle of the connecting surface a is not unique, and may take any value of 90-150°. In the embodiment, a preferred design is provided, and the taper angle of the connecting surface a is 130°. . Similarly, for the purpose of implementing the invention, the branch The number of the supporting pawls 22 is also not unique. In this embodiment, a specific design is provided in which four of the supporting pawls 22 are symmetrically disposed along the outer side of the spherical supporting surface 21.
• the spherical support surface 21 is composed of an edge spherical portion c and a bottom spherical portion d, and the radius of curvature of the edge spherical portion c is smaller than the bottom spherical portion. a radius of curvature of d, the edge spherical portion c is in direct contact with the support portion 33 of the friction block 3, and a gap is left between the bottom spherical portion d and the support portion 33 of the friction block 3 .
• the respective supporting pawls In order to prevent the respective supporting pawls from interfering with each other when extending outward, they can respectively perform a good buffering action when subjected to stresses in different directions, and the adjacent supporting pawls 22 are transitioned through the U-shaped opening 223.
• the bottom of the U-shaped opening 223 has a certain distance from the smooth transition section 23.
• Embodiment 1 is basically the same as the structure of Embodiment 1, and the differences are as follows:
• the spherical supporting surface 21 is composed of a spherical surface, and the spherical supporting surface 21 is in surface contact with the supporting portion 33 of the friction block 3 instead of the first embodiment.
• the spherical support surface 21 is composed of the edge spherical portion c and the bottom spherical portion d.
• the spherical support surface 21 is disposed in such a manner that the processing operation of the elastic support sheet is more convenient.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Braking Arrangements (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=48493837

Family Applications (1)

Country Status (6)

Cited By (11)

Families Citing this family (15)

Citations (22)

Family Cites Families (5)

• 2013
  • 2013-02-06 CN CN201310047736.XA patent/CN103133571B/zh active Active
• 2014
  • 2014-01-26 EA EA201500829A patent/EA029606B1/ru not_active IP Right Cessation
  • 2014-01-26 KR KR1020157024315A patent/KR101899874B1/ko active IP Right Grant
  • 2014-01-26 ES ES201590084A patent/ES2553928B1/es active Active
  • 2014-01-26 WO PCT/CN2014/071451 patent/WO2014121704A1/zh active Application Filing
  • 2014-01-26 DE DE112014000704.8T patent/DE112014000704T5/de not_active Withdrawn

Patent Citations (22)

Also Published As

Similar Documents

Legal Events