CN109058337B - Floating structure train brake pad connected by special-shaped disc spring - Google Patents

Floating structure train brake pad connected by special-shaped disc spring Download PDF

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Publication number
CN109058337B
CN109058337B CN201810862437.4A CN201810862437A CN109058337B CN 109058337 B CN109058337 B CN 109058337B CN 201810862437 A CN201810862437 A CN 201810862437A CN 109058337 B CN109058337 B CN 109058337B
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CN
China
Prior art keywords
special
disc spring
shaped disc
steel
friction block
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CN201810862437.4A
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Chinese (zh)
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CN109058337A (en
Inventor
付邵鹏
郝文龙
陈磊
张龙
刘英凯
周晓莹
姚俊青
蒋志文
刘建刚
张瑞涛
周洋
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Boshen Co ltd
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Boshen Co ltd
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Priority to CN201810862437.4A priority Critical patent/CN109058337B/en
Publication of CN109058337A publication Critical patent/CN109058337A/en
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Publication of CN109058337B publication Critical patent/CN109058337B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D69/00Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
    • F16D69/04Attachment of linings
    • F16D69/0416Attachment of linings specially adapted for curved linings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D69/00Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
    • F16D69/04Attachment of linings
    • F16D2069/0425Attachment methods or devices
    • F16D2069/0441Mechanical interlocking, e.g. roughened lining carrier, mating profiles on friction material and lining carrier

Abstract

The invention relates to a special-shaped disc spring connected floating structure train brake pad, belonging to the technical field of train braking. The train brake pad comprises a steel back mounting plate, a left steel back mounting plate and a right steel back mounting plate which are symmetrical to each other, wherein a dovetail platform is arranged on one surface of the steel back mounting plate, the left dovetail platform and the right dovetail platform are symmetrically distributed on the left steel back mounting plate and the right steel back mounting plate respectively, a circular mounting counter bore is formed in one surface of the steel back mounting plate, a disc spring is placed in the circular mounting counter bore, and the dovetail platform is arranged on the other surface of the steel back mounting plate; the friction block is arranged on one surface of the disc spring; the friction block is fixedly installed, one end of the friction block penetrates through the circular installation counter bore and then is connected to the other surface of the steel back installation plate through the special-shaped disc spring.

Description

Floating structure train brake pad connected by special-shaped disc spring
Technical Field
The invention relates to a special-shaped disc spring connected floating structure train brake pad, and belongs to the technical field of train brake pads.
Background
The disc brake has the advantages of compact structure, high braking efficiency, high braking power and the like, and is used for high-speed trains. As train speeds increase, the demand for train braking also increases.
During the braking process of the train, continuous vertical pressure, tangential friction force, sudden impact force and the like exist on friction surfaces of the brake pads and the brake disc. Under the action of strong friction force, the temperature of the friction surface rises sharply, and a temperature gradient is formed to generate stress, so that the brake pad of the high-speed train is exposed to extremely harsh use conditions, and can fail due to various factors. For example, traditional brake lining passes through the jump ring and connects clutch blocks and steel backing, because the jump ring bears great prestressing force after the installation to and jump ring itself has great opening, causes the too big rotation of jump ring easily to cause the whole of clutch blocks to drop.
The brake pad is an important part of a disc brake and mainly comprises a friction block and a steel backing. The common steel backing is formed by riveting or welding a dovetail plate and a steel backing mounting plate to form the brake pad. However, the brake pad in the form has the risk of rivet or welding seam fracture failure, so that the steel backing mounting plate and the dovetail plate are peeled off, and potential safety hazards are caused to train running.
The operational environment of train brake pad is comparatively abominable, can receive sleet, the influence of sand and dust weather to and consider chip removal and radiating effect, all require to increase the clearance between the clutch blocks as far as possible, if the clutch blocks adopts the structure of stumbling from hindering, can't guarantee the requirement in clearance, and the contact of each other between the clutch blocks, can increase the risk that the clutch blocks drops, but too big clearance can lead to the clutch blocks to take place autogyration in braking process, thereby reduce braking effect.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a special-shaped disc spring connected floating structure train brake pad.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a unsteady structure train brake block that abnormal shape dish spring is connected, includes clutch blocks and steel backing mounting panel, is equipped with a plurality of clutch blocks on the steel backing mounting panel, the steel backing mounting panel is including the left steel backing mounting panel and the right steel backing mounting panel of symmetry of each other, the one side of steel backing mounting panel is equipped with the dovetail platform, divides left dovetail platform, right dovetail platform, and symmetric distribution is on left steel backing mounting panel and right steel backing mounting panel respectively, left side steel backing mounting panel and left dovetail platform integrated into one piece casting, right steel backing mounting panel and right dovetail platform integrated into one piece casting.
Preferably, left steel backing mounting panel and right steel backing mounting panel integrated into one piece casting that the steel backing mounting panel was symmetrical each other, steel backing mounting panel and left dovetail platform and right dovetail platform integrated into one piece casting.
Preferably, one side of the steel back mounting plate is provided with a circular mounting counter bore, a disc spring is placed in the circular mounting counter bore, and the other side of the steel back mounting plate is provided with a dovetail platform;
the friction block is arranged on one surface of the disc spring; one end of the friction block, which is fixedly arranged, penetrates through the circular mounting counter bore and is connected to the other surface of the steel backing mounting plate through the special-shaped disc spring; the special-shaped disc spring comprises a disc-shaped bottom, a special-shaped disc spring mounting hole and a special-shaped disc spring tripping opening.
Preferably, the clutch blocks include successively connected clutch blocks base body hood, dysmorphism dish spring installation department, clutch blocks location portion, clutch blocks friction portion, clutch blocks base body hood is the motion runway shape, dysmorphism dish spring installation department is cylindrical, clutch blocks location portion upper portion is cylindrical lower part and is the round platform shape, clutch blocks friction portion is the cuboid form, and vertical four sides are the radius angle.
Preferably, the friction block base body top cap rotates 90 degrees after penetrating through the special-shaped disc spring mounting hole, the special-shaped disc spring forms a tripping fit with the friction block base body top cap at the special-shaped disc spring mounting part, and the special-shaped disc spring is rotated after mounting to enable the special-shaped disc spring to trip a tripping opening to the position of a tripping boss of the special-shaped disc spring, so that the steel back mounting plate, the special-shaped disc spring and the friction block are fixedly connected.
Preferably, one surface of the steel back mounting plate is provided with a special-shaped disc spring tripping boss for preventing a special-shaped disc spring from rotating, the special-shaped disc spring tripping boss is in an arc cuboid shape, and the special-shaped disc spring tripping boss can be accommodated in the special-shaped disc spring tripping hole; the retention gap between the abnormal-shaped disc spring stumbling boss and the abnormal-shaped disc spring is 1-2 mm.
Preferably, the special-shaped disc spring is disc-shaped and comprises a sector part and a bottom part, an acute angle between the sector part and the bottom part is 30-50 degrees, the bottom part is an upward-convex arc surface, a sports track-shaped special-shaped disc spring mounting hole is formed in the center of the special-shaped disc spring mounting hole and matched with a top cap of a mounting friction block base body, the edge of the bottom part is circular, a special-shaped disc spring tripping opening is formed between the edge part of the bottom of the sector part and the sector part, and two sides of the opening of the special-shaped disc spring tripping opening are straight sides.
Preferably, one surface of the steel back mounting plate is provided with a plurality of friction block tripping bosses between the transverse direction and the longitudinal direction of the friction block, the friction block tripping bosses comprise transverse friction block tripping bosses and longitudinal friction block tripping bosses, and the remaining gap between each friction block tripping boss and each friction block is 0.5-1.0 mm; the lug boss is blocked to horizontal clutch blocks is the cuboid structure, and the boss is blocked to the vertical clutch blocks of steel backing mounting panel both sides for the rectangular structure of banding, and the clutch blocks block the length and the position of stumbling the boss can stumble adjacent clutch blocks.
Preferably, the rectangular side surface of the friction block and the contact surface of the friction block blocking lug boss form a blocking relationship.
Preferably, a gap is reserved between the friction blocks, and the gap range is 3-6 mm.
Compared with the prior art, the invention has the prominent technical effects that:
1. the conventional steel backing is formed by riveting or welding a dovetail plate and a steel backing mounting plate, but the brake pad in the form has the risk of failure due to breakage of a rivet or a welding line, so that the steel backing mounting plate and the dovetail plate are peeled off, and potential safety hazards are caused to train running. The invention adopts the mode that the dovetail platform and the steel back mounting plate are cast into a whole, thereby improving the structural strength of the steel back mounting plate of the train brake pad.
2. According to the invention, the risk of the whole falling of the friction block is reduced by designing the special-shaped disc spring structure. The friction block in the prior art is connected with the steel back mounting plate through the clamp spring, the degree of freedom of the friction block is limited mainly through the elasticity of the clamp spring, and after long-term work, the elasticity of the clamp spring can be gradually reduced, so that the risk that the friction block falls is increased. The friction block and the steel backing mounting plate are connected through the special-shaped disc spring, so that the risk of elastic failure of parts in long-term work is avoided.
3. According to the invention, the belt-type friction block stumbling boss is designed on the steel backing, so that the self-rotation of the friction block is limited, and the friction performance is improved.
4. The friction blocks with large gaps are designed and distributed, so that friction scraps are conveniently discharged, and heat dissipation is facilitated. The risk that debris and the like are deposited between the friction blocks to cause reduction of braking capacity and damage to the brake disc is reduced.
5. The friction block adopts an elastic floating structure, so that the optimal friction surface can be automatically adjusted in the braking process, eccentric wear is avoided, and the braking effect is ensured.
Drawings
FIG. 1 is a front view of a set of brake pads of the present invention;
FIG. 2 is a rear elevational view of a set of brake pads in accordance with the present invention;
FIG. 3 is a schematic view of a special-shaped disc spring stumbling boss on a steel backing mounting plate;
FIG. 4 is a schematic view of a shaped disc spring;
FIG. 5 is a schematic view of a friction block
FIG. 6 is a cross-sectional view of a brake pad of the present invention
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
See fig. 1-6. The reference numbers and meanings of the components in the figures are as follows:
1. the steel backing mounting plate, 2, the friction block, 3, the abnormal shape dish spring, 4, the dish spring, 5, the dovetail platform, 6, the abnormal shape dish spring hinders stumble the boss, 71, the horizontal friction block hinders stumble the boss, 72, the vertical friction block hinders stumble the boss, 8, the abnormal shape dish spring hinders stumble mouth 9, the abnormal shape dish spring mounting hole, 10, the friction block friction portion, 11, the friction block location portion, 12, the friction block base body hood, 13, the abnormal shape dish spring installation portion, 14, the abnormal shape dish spring sector, 15, the abnormal shape dish spring fan bottom.
The working principle of the invention is as follows:
the clutch blocks are hooked with the special-shaped disc springs and assembled on the steel backing mounting plate: the assembly process needs to rotate the heterotypic dish spring 90 to heterotypic dish spring and hinder stumble the boss position, and the dish spring hinders stumble the boss and blocks heterotypic dish spring, prevents that it from further taking place great rotation, and when rotating this position simultaneously, heterotypic dish spring mounting hole links with linking with each other with the linking of friction block base body hood, has accomplished the assembly of friction block. During braking, the friction block can rotate to a certain degree, but cannot rotate to a position tangent to the initial installation of the special-shaped disc spring, and the friction block is prevented from falling off.
The utility model provides a unsteady structure train brake block that abnormal shape dish spring is connected, includes clutch blocks and steel backing mounting panel 1, is equipped with a plurality of clutch blocks on the steel backing mounting panel, steel backing mounting panel 1 is including the left steel backing mounting panel and the right steel backing mounting panel of symmetry of each other, steel backing mounting panel 1's one side is equipped with the dovetail platform, divides left dovetail platform, right dovetail platform, and the symmetric distribution is on left steel backing mounting panel and right steel backing mounting panel respectively, left side steel backing mounting panel and left dovetail platform integrated into one piece casting, right steel backing mounting panel and right dovetail platform integrated into one piece casting.
The floating structure train brake pad that abnormal shape dish spring is connected, left steel backing mounting panel and the casting of right steel backing mounting panel integrated into one piece of steel backing mounting panel 1 symmetry each other, steel backing mounting panel 1 casts with left dovetail platform and right dovetail platform integrated into one piece.
One side of the steel back mounting plate 1 is provided with a circular mounting counter bore, a disc spring 4 is placed in the circular mounting counter bore, and the other side of the steel back mounting plate 1 is provided with a dovetail platform 5;
the friction block 2 is arranged on one surface of the disc spring 4; one end of the friction block 2, which is fixedly arranged, penetrates through the circular mounting counter bore and is connected to the other surface of the steel backing mounting plate 1 through the special-shaped disc spring 3; the special-shaped disc spring 3 comprises a disc-shaped bottom 15, a special-shaped disc spring mounting hole 9 and a special-shaped disc spring tripping opening 8;
the common steel backing is formed by riveting or welding a dovetail plate and a steel backing mounting plate to form the brake pad. However, the brake pad in the form has the risk of rivet or welding seam fracture failure, so that the steel backing mounting plate and the dovetail plate are peeled off, and potential safety hazards are caused to train running.
The floating structure train brake pad that abnormal shape dish spring is connected, clutch block 2 including consecutive clutch block base member hood 12, special-shaped dish spring installation department 13, clutch block location portion 11, clutch block friction portion 10, clutch block base member hood 12 is the motion runway shape, special-shaped dish spring installation department 13 is cylindrical, 11 upper portions in clutch block location portion are cylindrical lower part and are the round platform shape, clutch block friction portion 10 is the cuboid form, and vertical four sides are the radius angle.
The special-shaped disc spring connected floating structure train brake pad is characterized in that a special-shaped disc spring tripping boss 6 for preventing a special-shaped disc spring 3 from rotating is arranged on one surface of the steel back mounting plate 1, the special-shaped disc spring tripping boss 6 is in an arc cuboid shape, and the special-shaped disc spring tripping boss 6 can be accommodated in a special-shaped disc spring tripping opening 8; the range of the remaining gap between the abnormal-shaped disc spring stumbling boss 6 and the abnormal-shaped disc spring 3 is 1-2 mm.
The floating structure train brake pad that abnormal shape dish spring is connected, 3 appearances of special-shaped dish spring be the dish type, including sector and bottom, the acute angle of sector and bottom is 30 ~ 50, the bottom is the bellied cambered surface that makes progress, and open at the center has the special-shaped dish spring mounting hole 9 of motion runway shape, cooperatees with installation friction block base body hood 12, the bottom edge is circular, and it has the special-shaped dish spring to hinder stumble mouth 8 to open between sector bottom edge portion and the sector, the special-shaped dish spring hinder the both sides of stumbleing 8 openings and be the straight flange.
The floating structure train brake pad that abnormal shape dish spring is connected, clutch blocks base member hood 12 pass behind the special-shaped dish spring mounting hole 9 rotatory 90, abnormal shape dish spring 3 forms with clutch blocks base member hood 12 at special-shaped dish spring installation portion 13 and hinders stumbling the cooperation, rotate abnormal shape dish spring 3 after the installation and make the special-shaped dish spring hinder stumbling mouth 8 to the special-shaped dish spring and hinder stumbling boss 6 position, accomplish the steel backing mounting panel 1 and the clutch blocks between 2 and be connected.
The special-shaped disc spring rotates by 90 degrees or 270 degrees, so that the special-shaped disc spring tripping boss can be embedded into the special-shaped disc spring tripping opening, and at the moment, the special-shaped disc spring mounting hole and the friction block base body top cap are mutually hooked to complete mounting.
The large-gap floating structure train brake pad connected with the special-shaped disc spring is characterized in that a plurality of friction block tripping bosses are arranged on one surface of the steel back mounting plate 1 between the transverse direction and the longitudinal direction of the friction block, the friction block tripping bosses comprise transverse friction block tripping bosses 71 and longitudinal friction block tripping bosses 72, and the remaining gap between each friction block tripping boss and the corresponding friction block 2 is 0.5-1 mm; the transverse friction block stumbling boss 71 is of a cuboid structure, and the longitudinal friction blocks on two sides of the steel back mounting plate 1 are stumbling bosses 72 of a strip cuboid structure. The rectangular side surface of the friction block 2 and the contact surface of the friction block tripping boss form tripping relationship.
A gap is reserved between the friction blocks 2, and the range of the gap is 3-6 mm.
In this embodiment, the short side of 8 friction blocks 2 is parallel to the end face of the limit end of the steel back mounting plate dovetail platform 5, and the long side of 1 friction block 2 is parallel to the end face of the limit end of the steel back mounting plate dovetail platform 5.
The special-shaped disc spring blocking opening of the special-shaped disc spring 3 and the special-shaped disc spring blocking lug boss 6 block and prevent the special-shaped disc spring from rotating too much.
A gap is reserved between the friction block blocking lug boss 7 and the friction block 2. In the braking process, the friction block stumble-resisting lug boss can limit the overlarge self-rotation of the friction block, and the braking effect is ensured. As shown in FIG. 2, by calculating the effective friction area and the temperature distribution, the invention installs 9 friction blocks 2 on two symmetric brake pads.
The specific part structure is shown in fig. 1, fig. 2 and fig. 3. The invention adopts the mode that the dovetail platform and the steel backing mounting plate are cast into a whole, and improves the structural strength of the steel backing mounting plate, thereby improving the structural strength of the train brake pad, prolonging the service life of the train brake pad and reducing the risk of the whole falling of the friction block.
Braking process:
in the braking process of the train, after the braking clamp force is applied to the steel back mounting plate, the friction block is tightly attached to the brake disc, and due to the effect of the disc spring, the friction block can automatically adjust the friction surface, so that eccentric wear is avoided. The friction block bears braking friction force and can rotate automatically, and the steel back mounting plate is provided with the stumbling boss to prevent the friction block from rotating automatically. The friction block can not rotate to the position tangent with the mounting hole of the special-shaped disc spring, and the risk that the friction block falls is avoided.
The above embodiments are only used for clarity and illustration, wherein the structures of the components, especially the form of the stop lug on the steel back mounting plate and the slotted appearance structure of the special-shaped disc spring are designed as a whole and can be changed. All equivalent changes and modifications based on the technical scheme of the invention shall not be excluded from the protection scope of the invention.

Claims (5)

1. The utility model provides a floating structure train brake block that abnormal shape dish spring is connected, includes clutch blocks and steel backing mounting panel (1), is equipped with a plurality of clutch blocks (2), characterized by on the steel backing mounting panel: the steel back mounting plate (1) comprises a left steel back mounting plate and a right steel back mounting plate which are symmetrical to each other, one side of the steel back mounting plate (1) is provided with a dovetail platform, the left dovetail platform and the right dovetail platform are symmetrically distributed on the left steel back mounting plate and the right steel back mounting plate respectively, the left steel back mounting plate and the left dovetail platform are integrally formed and cast, and the right steel back mounting plate and the right dovetail platform are integrally formed and cast;
the left steel back mounting plate and the right steel back mounting plate which are mutually symmetrical are integrally formed and cast by the steel back mounting plate (1), and the steel back mounting plate (1), the left dovetail platform and the right dovetail platform are integrally formed and cast;
one side of the steel back mounting plate (1) is provided with a circular mounting counter bore, a disc spring (4) is placed in the circular mounting counter bore, and the other side of the steel back mounting plate (1) is provided with a dovetail platform (5); the friction block (2) is arranged on one surface of the disc spring (4); one end of the friction block (2) which is fixedly arranged penetrates through the round mounting counter bore and then is connected to the other surface of the steel backing mounting plate (1) through the special-shaped disc spring (3); the special-shaped disc spring (3) comprises a disc-shaped bottom (15), a special-shaped disc spring mounting hole (9) and a special-shaped disc spring tripping opening (8);
the friction block (2) comprises a friction block base body top cap (12), a special-shaped disc spring installation part (13), a friction block positioning part (11) and a friction block friction part (10) which are sequentially connected, wherein the friction block base body top cap (12) is in a motion runway shape, the special-shaped disc spring installation part (13) is in a cylindrical shape, the upper part of the friction block positioning part (11) is in a cylindrical shape, the lower part of the friction block positioning part is in a circular truncated cone shape, the friction block friction part (10) is in a rectangular shape, and four vertical edges of the friction block friction part are fillets;
the friction block base body top cap (12) penetrates through the special-shaped disc spring mounting hole (9) and then rotates 90 degrees, the special-shaped disc spring (3) and the friction block base body top cap (12) form a tripping fit in the special-shaped disc spring mounting part (13), and the special-shaped disc spring (3) is rotated after mounting to enable the special-shaped disc spring tripping opening (8) to reach the position of the special-shaped disc spring tripping boss (6), so that the steel back mounting plate (1), the special-shaped disc spring (3) and the friction block (2) are fixedly connected;
one surface of the steel back mounting plate (1) is provided with a special-shaped disc spring tripping boss (6) for preventing the special-shaped disc spring (3) from rotating, the special-shaped disc spring tripping boss (6) is arc-shaped cuboid, and the special-shaped disc spring tripping boss (6) can be accommodated in a special-shaped disc spring tripping opening (8) in size; the retention gap between the special-shaped disc spring stumbling boss (6) and the special-shaped disc spring (3) is 1-2 mm.
2. The special-shaped disc spring connected floating structure train brake pad of claim 1, which is characterized in that: the special-shaped disc spring (3) is disc-shaped and comprises a sector part and a bottom part, wherein an acute angle between the sector part and the bottom part is 30-50 degrees, the bottom part is an upward convex arc surface, a sports track-shaped special-shaped disc spring mounting hole (9) is formed in the center of the special-shaped disc spring, the special-shaped disc spring mounting hole is matched with a base top cap (12) for mounting a friction block, the edge of the bottom part is circular, a special-shaped disc spring tripping opening (8) is formed between the edge part of the bottom of the sector part and the sector part, and two sides of the opening of the special-shaped disc spring tripping opening (8) are.
3. The special-shaped disc spring connected floating structure train brake pad of claim 1, which is characterized in that: one surface of the steel back mounting plate (1) is provided with a plurality of friction block tripping bosses between the transverse direction and the longitudinal direction of the friction block, the friction block tripping bosses comprise transverse friction block tripping bosses (71) and longitudinal friction block tripping bosses (72), and the remaining gap between each friction block tripping boss and the corresponding friction block (2) is 0.5-1.0 mm; the transverse friction block stumble boss (71) is of a cuboid structure, and the longitudinal friction blocks on the two sides of the steel back mounting plate (1) stumble the boss (72) and are of a strip cuboid structure.
4. The special-shaped disc spring connected floating structure train brake pad of claim 3, which is characterized in that: the rectangular side surface of the friction block (2) and the contact surface of the friction block tripping boss form tripping resistance relation.
5. The special-shaped disc spring connected floating structure train brake pad of claim 4, which is characterized in that: and gaps are reserved between the friction blocks (2), and the range of the gaps is 3-6 mm.
CN201810862437.4A 2018-08-01 2018-08-01 Floating structure train brake pad connected by special-shaped disc spring Active CN109058337B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810862437.4A CN109058337B (en) 2018-08-01 2018-08-01 Floating structure train brake pad connected by special-shaped disc spring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810862437.4A CN109058337B (en) 2018-08-01 2018-08-01 Floating structure train brake pad connected by special-shaped disc spring

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Publication Number Publication Date
CN109058337A CN109058337A (en) 2018-12-21
CN109058337B true CN109058337B (en) 2021-04-06

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