CN217207440U - Composite brake shoe capable of improving bonding strength - Google Patents
Composite brake shoe capable of improving bonding strength Download PDFInfo
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- CN217207440U CN217207440U CN202120713695.3U CN202120713695U CN217207440U CN 217207440 U CN217207440 U CN 217207440U CN 202120713695 U CN202120713695 U CN 202120713695U CN 217207440 U CN217207440 U CN 217207440U
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Abstract
The utility model relates to an improve bonding strength's synthetic brake shoe, including even frictional body and the steel backing as an organic whole, the steel backing is arc platelike structure, the outside middle part of steel backing is the tile nose, and tile nose groove is the opening design, is formed with recessed circular arc along steel backing width direction in the both sides of tile nose, a plurality of material holes of grabbing and the claw of grabbing are gone out to the inside punching press in the steel backing outside, there is certain angle between the perpendicular line of claw and the circular arc tangent line through its root, it is downthehole that the material hole is used for making frictional body material embedding grab material, it is used for inserting the frictional body combination in the frictional body to grab the material claw. Compared with the prior art, the utility model discloses a set up on the steel backing and grab the material hole and grab the material claw, can effectively improve the bonding strength of brake shoe and steel backing. Concave arcs are formed on the two sides of the tile nose along the width direction of the steel backing, so that cracks can be prevented from appearing due to frequent impact of the root of the tile nose.
Description
Technical Field
The utility model belongs to the technical field of arresting gear technique is used in urban rail transit and specifically relates to an improve bonding strength's composite brake shoe is related to.
Background
With the development of urban rail transit in China, such as safety, heavy load and high speed, rail transit is gradually becoming an important way to improve the traffic conditions of large and medium cities. However, with the continuous encryption of subway lines in cities, the continuous reduction of subway operation interval time, frequent braking, the continuous increase of the full load rate of trains and even the frequent overload during rush hours and off-duty peaks, the requirements on the synthetic brake shoe for subway trains are higher and higher, and in the braking process of trains, the key part of the synthetic brake shoe is the synthetic brake shoe which mainly comprises a friction body and a steel back, wherein the friction body is the key part of the brake shoe and comprises a binder, a reinforcing material, a filler and the like, and when the trains are braked, the friction between the synthetic brake shoe and the wheel tread achieves the purpose of deceleration braking. The brake shoe is not firmly bonded with the steel back, particularly the edge part of the brake shoe is easy to cause the brake shoe to fall off the angle, the block and the block, once the friction body and the steel back fall off, the brake can not be realized, thereby causing the accident. Because the train operation station distance is short, the brake of the brake shoe and the wheel tread is frequent, the brake shoe tile nose and the tile support are impacted for many times, the tile nose root can have impact cracks, the tile nose has the risk of fracture, and the normal operation of the train is seriously influenced.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: how effectively improve the adhesive strength of brake shoe and steel backing, can avoid the frequent striking of the nose root of a tile to appear crackle simultaneously, based on this technical problem, the utility model provides an improve adhesive strength's synthetic brake shoe.
The purpose of the utility model can be realized by the following technical proposal:
the utility model provides an improve bond strength's composite brake shoe, including even friction piece and the steel backing as an organic whole, the steel backing is arc platelike structure, the outside middle part of steel backing is the tile nose, and the tile nose groove is the opening design, is formed with concave circular arc along steel backing width direction in the both sides of tile nose, the inside punching press in the steel backing outside goes out a plurality of material holes of grabbing and grabs the material claw, it is downthehole to grab the material hole and be used for making friction piece material embedding grab the material, it has certain angle to grab between the material claw and the perpendicular line through the circular arc tangent line of its root, it combines with the friction piece in being used for inserting the friction piece to grab the material claw.
The utility model discloses an in the embodiment, the tile nose directly forms from the stamping of steel backing for tile nose and steel backing structure as an organic whole have elasticity, and difficult emergence is out of shape, guarantees that the tile nose can not drop from the steel backing, reduces the occurence of failure, can improve the life of brake shoe. Avoid seting up tile nose mounting hole specially on the steel backing, fix the tile nose to corresponding downthehole again, easily cause the insecure connection of tile nose and steel backing, have the risk of droing.
In an embodiment of the present invention, the tile nose is shaped as "M", and the arc of the tile nose top inside the steel backing is the inner arc of the tile nose top. The stress concentration at the bending part is reduced by increasing the inner arc of the tile nose top, the formation of the bending fold of the inner arc and the generation of the stretching and tearing phenomena of the outer arc are reduced, and the phenomenon that the fold wrinkle is developed into cracks and crack extension caused by frequent impact of the tile nose and the tile support is avoided.
In one embodiment of the present invention, the tile nose and the tile pin insertion hole are formed on both sides of the tile nose.
The utility model discloses an in an embodiment, four angles of tile nose tile borer interlude hole are fillet structure for avoid bending that the right angle produced to tear, the crackle produces and the emergence of atress extension phenomenon, avoided stress concentration again simultaneously.
The utility model discloses be formed with recessed circular arc along steel backing width direction in the both sides of tile nose, the stress of brake shoe steel backing in the use can be eliminated to the recessed circular arc of make full use of, avoids tile nose root and tile to hold in the palm the frequent deformation that causes the steel backing and the emergence of crackle, plays the effect of dodging, improves steel backing life.
In one embodiment of the present invention, the material grabbing hole is formed by punching steel back to the inside.
The utility model discloses an in the embodiment, it is provided with 8 to grab the material hole, is provided with 4 respectively in the both sides of tile nose.
In an embodiment of the present invention, the material grabbing hole is circular.
The material grabbing hole is used for enabling the friction body material to be embedded into the material grabbing hole, so that the steel back and the friction body are firmly combined, and the bonding strength and the shearing strength of the brake shoe are improved.
The utility model discloses an among the embodiment, the welding has the welding plate on the steel backing inboard of both sides under the opening of the portion of bending of tile nose, the centre of welding plate is cut and is the opening.
The utility model discloses an in the embodiment, the shape that the claw is located the steel backing outside is the rectangle, and the part that is located the steel backing inboard designs into certain form of bending, it is 45 to grab between the claw and the perpendicular line through the circular arc tangent line of its root to make and grab during the more deep insertion friction material of claw, increase area of contact to improve bonding strength.
In one embodiment of the present invention, the gripper is formed by punching a steel back inward.
In one embodiment of the utility model, the number of the material grabbing claws is 14, the material grabbing claws are of 3 types,
the two sides of the tile nose are respectively provided with 2 first material grabbing claws in parallel to the length direction of the steel backing, 4 first material grabbing claws are arranged on the welding plate, the part of each first material grabbing claw positioned on the inner side of the steel backing is designed into a certain bent shape, and each first material grabbing claw is provided with 2 folded edges;
1 second material grabbing claw is arranged on each of two sides of the tile nose, the second material grabbing claws are located between the two positioning sheets, and the second material grabbing claws are provided with 1 folded edge;
two edges of the steel backs on two sides of the tile nose are respectively provided with 2 third material grabbing claws which point to different directions, the third material grabbing claws are arranged along the length direction of the steel backs, and the third material grabbing claws are provided with 2 folded edges.
The third grabs the length of material claw longer, and the width of third grabs the material claw is shorter. The third gripper can be inserted into the friction body edge from different angles. The friction body is hung on the inner arc surface of the steel back, and the four sides of the friction body are completely wrapped, so that the steel back is not easy to separate from the friction body, and the bonding strength of the steel back and the friction body is further improved.
The utility model discloses an in the embodiment the steel backing outside is located tile nose both sides and is equipped with the mounting hole, the distribution of two mounting hole symmetries in tile nose both sides, the mounting hole is used for playing the positioning action.
In an embodiment of the present invention, the mounting hole is circular.
In an embodiment of the present invention, two protruding positioning columns are disposed outside the steel back, and the two positioning columns are symmetrically disposed on two sides of the tile nose.
In an embodiment of the utility model, the reference column imbeds and passes the steel backing, rivets to the steel backing inboard.
In an embodiment of the present invention, the positioning column is in a shape of a circular truncated cone.
The positioning column is suitable for the installation and positioning of the brake shoe and the tile support, and can enable the brake shoe to be in contact with the tile support of the train to prevent the brake shoe from rotating forwards and backwards. The positioning column on the inner side of the steel backing is riveted in a cross shape and is inserted into the friction body to play a role in bonding when the product is pressed and cured.
In one embodiment of the present invention, the two sides of the tile nose are provided with positioning pieces.
The utility model discloses an in the embodiment, the spacer is provided with two respectively in tile nose both sides, the spacer sets up along the length direction of steel backing, two spacer parallel distribution.
In one embodiment of the present invention, the spacer is embedded in and passes through the steel back, and is riveted to the inner side of the steel back.
In an embodiment of the present invention, the structure of the positioning plate located inside the steel backing is zigzag, and is inserted into the friction body during pressing and curing of the product, so as to perform a bonding function.
The locating plate is used for preventing the brake shoe from rotating left, right, front and back.
The utility model discloses an among the embodiment, the welding plate on the steel backing is middle not cut when the suppression, prevents that the brake shoe from changing at suppression and curing process brake shoe tile nose size, guarantees mounting dimension. The middle of the welding plate is cut by sawing after the finished product is manufactured, the opening is arranged in the middle of the welding plate, the internal stress of the steel backing can be eliminated, and the brake shoe tread is favorably attached to a wheel during braking.
The utility model discloses an in the embodiment, tile nose opening below friction body middle part position is provided with the chip groove, the chip groove is logical groove, the chip groove runs through whole friction body along friction body width direction.
In an embodiment of the invention, the chip groove extends to the weld plate.
In an embodiment of the present invention, the chip groove is a rectangular chip groove. The width of the chip groove is 3mm-5 mm.
The chip groove effect has 2: firstly, dispel the heat, directly dispel the heat that produces in the braking friction, reduce brake shoe surface temperature, increase of service life effectively protects the dual. And secondly, the dust is removed, and the dust generated after friction is discharged, so that the normal use of the brake shoe is ensured. The groove is opened at the middle part of the friction body, so that the brake shoe can be flexibly and tightly attached to the shoe support, the brake shoe has elastic deformation capacity, the contact stress area is increased, the instantaneous stress at the two ends of the brake shoe is reduced, and the possibility of vibration damage is reduced.
In one embodiment of the present invention, the friction body is provided with a wear line on a side surface thereof. The position of wearing and tearing limit can be clearly marked to the wearing and tearing line, and convenient monitoring is favorable to in time changing, avoids the friction body wearing and tearing to exceed the potential safety hazard of driving that the limit leads to.
Compared with the prior art, the utility model discloses an advantage embodies in following aspect:
the utility model discloses a set up on the steel backing and grab the material hole and grab the material claw, can effectively improve the bonding strength of brake shoe and steel backing. Concave arcs are formed on the two sides of the tile nose along the width direction of the steel backing, so that cracks can be prevented from appearing due to frequent impact of the root of the tile nose. Still realize the locate function through setting up reference column, spacer etc. and prevent that the brake shoe from controlling the fore-and-aft rotation. The middle part of the friction body is provided with the chip groove, so that heat generated in braking friction can be directly dissipated, the surface temperature of the brake shoe is reduced, the service life is prolonged, the dual is effectively protected, and meanwhile, dust generated after friction is discharged, and the normal use of the brake shoe is ensured. And the chip groove is a through groove, so that the brake shoe can be flexibly and closely attached to the shoe support, the brake shoe has elastic deformation capacity, the contact stress area is increased, the instantaneous stress at two ends of the brake shoe is reduced, and the possibility of vibration damage is reduced. Four angles of the tile nose tile borer through insertion holes on two sides of the tile nose are designed to be of a fillet structure, so that the phenomena of bending tearing, crack generation and stress extension caused by right angle generation are avoided, and meanwhile, stress concentration is also avoided.
Drawings
FIG. 1 is a schematic perspective view of a composite brake shoe having improved bonding strength according to example 1 of the present invention.
FIG. 2 is a schematic structural view of the composite brake shoe with improved bonding strength according to embodiment 1 of the present invention.
FIG. 3 is a sectional view of the steel backing of the composite brake shoe for improving the adhesive strength according to embodiment 1 of the present invention.
FIG. 4 is a plan view of the steel backing of the composite brake shoe of example 1 of the present invention with improved adhesion strength.
The reference numbers in the figures indicate:
1. the novel bearing bush comprises a friction body, 2 steel backs, 3 tile noses, 4 concave arcs, 5 material grabbing holes, 6-1 first material grabbing claws, 6-2 second material grabbing claws, 6-3 third material grabbing claws, 7 mounting holes, 8 positioning columns, 9 positioning sheets, 10 welding plates, 11 chip grooves, 12 abrasion lines, 13 tile nose top inner arcs and 14 tile nose tile brazing rod penetrating and inserting holes.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Examples
Referring to fig. 1-4, this embodiment provides a synthetic brake shoe for improving bonding strength, including even friction body 1 and steel backing 2 as an organic whole, steel backing 2 is arc platelike structure, the outside middle part of steel backing 2 is tile nose 3, and the tile nose groove is the opening design, is formed with concave circular arc 4 along steel backing width direction in tile nose 3's both sides, inwards ram out a plurality of material grabbing holes 5 and material grabbing claw in the 2 outside of steel backing, there is certain angle between material grabbing claw and the perpendicular line through the circular arc tangent line of its root, material grabbing hole 5 is used for making friction body 1 material embedding material grabbing in the material grabbing hole 5, material grabbing claw is used for inserting in friction body 1 and combines with friction body 1.
In this embodiment, tile nose 3 is direct to be formed from the punching press on the steel backing 2 for tile nose 3 and steel backing 2 structure as an organic whole have elasticity, and difficult emergence is out of shape, guarantees that tile nose 3 can not follow steel backing 2 and drop, reduces the occurence of failure, can improve the life of brake shoe. Avoid seting up tile nose mounting hole specially on the steel backing, fix the tile nose to corresponding downthehole again, easily cause the insecure connection of tile nose and steel backing, have the risk of droing.
In this embodiment, the tile nose 3 is shaped like an "M", and the arc at the top of the tile nose on the inner side of the steel back is an inner arc 13 at the top of the tile nose. The stress concentration at the bending part is reduced by increasing the inner arc 13 at the top of the tile nose, the formation of the bending fold of the inner arc and the generation of the stretching and tearing phenomena of the outer arc are reduced, and the phenomenon that the fold wrinkle is developed into cracks and crack extension caused by frequent impact of the tile nose and the tile support is avoided.
In this embodiment, a shoe nose and shoe pin insertion hole 14 is formed in a side surface of the shoe nose 3.
In this embodiment, four corners of the tile nose tile pin insertion hole 14 are rounded structures, so that the phenomena of bending and tearing, crack generation and stress extension caused by right angles are avoided, and stress concentration is also avoided.
In this embodiment, concave circular arcs 4 are formed along the steel backing width direction in the both sides of tile nose 3, and the stress of brake shoe steel backing 2 in the use can be eliminated to make full use of concave circular arcs 4, avoids tile nose 3 root and tile support frequent impact to cause the deformation of steel backing 2 and the emergence of crackle, plays the effect of dodging, improves steel backing 2 life.
In this embodiment, the material grabbing hole 5 is formed by punching the steel back 2 inwards. Grab material hole 5 and be provided with 8, be provided with 4 respectively in 3 both sides of tile nose. The material grabbing hole 5 is circular. The material grabbing hole 5 is used for enabling the friction body 1 to be embedded into the material grabbing hole 5, so that the steel back 2 is firmly combined with the friction body 1, and the bonding strength and the shearing strength of the brake shoe are improved.
In this embodiment, the welding plate 10 is welded on the inner sides of the steel backs 2 on the two sides right below the opening of the bending part of the tile nose 3, and the middle of the welding plate 10 is cut into an opening.
In the embodiment, the middle of the welding plate 10 on the steel backing 2 is not cut during pressing, so that the size change of the brake shoe and shoe nose 3 in the pressing and curing processes of the brake shoe is prevented, and the installation size is ensured. The middle of the welding plate is cut by sawing after the finished product is manufactured, the opening is arranged in the middle of the welding plate, the internal stress of the steel backing can be eliminated, and the brake shoe tread is favorably attached to a wheel during braking.
In this embodiment, the material grabbing claw forms a 45-degree angle with a perpendicular line passing through a tangent line of an arc at the root of the material grabbing claw, so that the material grabbing claw is inserted into the material of the friction body 1 more deeply, the contact area is increased, and the bonding strength is improved. The material grabbing claw is formed by inwards stamping the steel back 2.
In the embodiment, 14 material grabbing claws are arranged, the number of the material grabbing claws is 3,
2 first material grabbing claws 6-1 are respectively arranged on two sides of the tile nose 3 in parallel to the length direction of the steel backing, 4 first material grabbing claws 6-1 are arranged on the welding plate 10, the part, located on the inner side of the steel backing, of each first material grabbing claw 6-1 is designed to be bent to a certain degree, and each first material grabbing claw 6-1 is provided with 2 folded edges; the first material grabbing claw 6-1 is inserted into the friction body, so that the contact area of the brake shoe and the steel back is increased, and the bonding strength of the brake shoe and the steel back is improved.
Two sides of the tile nose 3 are respectively provided with 1 second material grabbing claw 6-2, the second material grabbing claws 6-2 are positioned between the two positioning pieces 9, and the second material grabbing claws 6-2 are provided with 1 folded edge;
two edges of the steel backing 2 on two sides of the tile nose 3 are respectively provided with 2 third material grabbing claws 6-3 pointing to different directions, the third material grabbing claws 6-3 are arranged along the length direction of the steel backing 2, and the third material grabbing claws 6-3 are provided with 2 folded edges. The third material grabbing claw 6-3 is long in length, and the third material grabbing claw 6-3 is short in width. The third gripper 6-3 can be inserted into the edge of the friction body from different angles. The friction body is hung on the inner arc surface of the steel back, and the four sides of the friction body are completely wrapped, so that the steel back is not easy to separate from the friction body, and the bonding strength of the steel back and the friction body is further improved.
In this embodiment, the steel backing 2 outside is located tile nose 3's both sides and is equipped with mounting hole 7, and two mounting holes 7 symmetric distribution are in tile nose 3 both sides, mounting hole 7 is used for playing the positioning action. In this embodiment, the mounting hole 7 is circular.
In this embodiment, two protruding positioning columns 8 are arranged on the outer side of the steel backing 2, and the two positioning columns 8 are symmetrically located on two sides of the tile nose 3. In this embodiment, the positioning column 8 is embedded into and penetrates through the steel back 2, and is riveted to the inner side of the steel back 2. In this embodiment, the positioning column 8 is shaped like a circular truncated cone. The positioning column 8 is suitable for mounting and positioning the brake shoe and the tile support, and can enable the brake shoe to be in contact with the tile support of the train to prevent the brake shoe from rotating forwards and backwards. The positioning column 8 on the inner side of the steel back 2 is riveted in a cross shape and is inserted into the friction body 1 to play a role in bonding when a product is pressed and cured.
In this embodiment, the two sides of the tile nose 3 are both provided with positioning pieces 9. The locating plate 9 is provided with two respectively in tile nose 3's both sides, the locating plate 9 sets up along the length direction of steel backing 2, two locating plate 9 parallel distribution. The positioning plate 9 is embedded into and penetrates through the steel back 2 and is riveted to the inner side of the steel back 2. In this embodiment, the positioning plate 9 is located on the inner side of the steel backing 2 and has a zigzag structure, and is inserted into the friction body during pressing and curing of the product to play a role in bonding. The positioning plate 9 is used for preventing the brake shoe from rotating left and right and back and forth.
In this embodiment, a chip groove 11 is formed in the middle of the friction body 1 below the opening of the tile nose 3, the chip groove 11 is a through groove, and the chip groove 11 penetrates through the whole friction body 1 along the width direction of the friction body 1. The chip grooves 11 extend to the weld plate 10. The chip groove 11 is a rectangular chip groove. The width of the chip groove 11 is 3mm-5 mm.
The chip groove has 2 functions: firstly, dispel the heat, directly dispel the heat that produces in the braking friction, reduce brake shoe surface temperature, increase of service life effectively protects the dual. And secondly, the dust is removed, and the dust generated after friction is discharged, so that the normal use of the brake shoe is ensured. The groove is opened at the middle part of the friction body, so that the brake shoe can be flexibly and tightly attached to the shoe support, the brake shoe has elastic deformation capacity, the contact stress area is increased, the instantaneous stress at the two ends of the brake shoe is reduced, and the possibility of vibration damage is reduced.
In this embodiment, the friction body 1 is provided with a wear line 12 on a side surface thereof. The abrasion line can clearly mark the position of the abrasion limit, is convenient to monitor, is beneficial to timely replacement, and avoids the potential safety hazard of driving caused by the fact that the abrasion of the friction body exceeds the limit.
The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.
Claims (10)
1. The utility model provides an improve bonding strength's synthetic brake shoe, is including even friction member (1) and steel backing (2) as an organic whole, steel backing (2) are arc platelike structure, the outside middle part of steel backing (2) is tile nose (3), is formed with recessed circular arc (4) along steel backing width direction in tile nose (3) both sides, its characterized in that, a plurality of material holes (5) and the claw of grabbing are grabbed in punching press out in steel backing (2) outside, grab material hole (5) and be used for making friction member (1) material embedding grab material hole (5) in, there is an angle tangent line between the perpendicular line of the circular arc of grabbing the claw and passing through its root, grab the material claw and be used for inserting friction member (1) in combine with friction member (1).
2. The composite brake shoe for improving the bonding strength as claimed in claim 1, wherein the shoe nose (3) is "M" shaped, and the middle of the top of the shoe nose (3) is an inner arc (13) of the shoe nose top; and tile nose tile drill rod penetrating and inserting holes (14) are formed in two sides of the tile nose (3).
3. The composite brake shoe for improving bonding strength according to claim 2, wherein the shoe nose shoe drill penetration hole (14) has a round corner structure at four corners.
4. The composite brake shoe with improved bonding strength as claimed in claim 1, wherein a chip groove (11) is arranged at the middle position of the friction body (1) below the opening of the shoe nose (3), the chip groove (11) is a through groove, and the chip groove (11) penetrates through the whole friction body (1) along the width direction of the friction body (1).
5. The composite brake shoe with improved bonding strength as claimed in claim 1, wherein the material grabbing hole (5) is formed by punching the steel backing (2) inwards; the number of the material grabbing holes (5) is 8, and the number of the material grabbing holes is 4 respectively arranged on two sides of the tile nose (3).
6. The composite brake shoe with improved bonding strength as claimed in claim 1, wherein the welding plates (10) are welded on the inner sides of the steel back (2) at two sides right below the opening of the bending part of the shoe nose (3), and the middle of the welding plates (10) is cut to form an opening.
7. The composite brake shoe for improving the bonding strength according to claim 6, wherein the material grabbing claw is formed by inwards punching a steel backing (2) at an angle of 45 degrees with a perpendicular line passing through a tangent line of a circular arc at the root of the material grabbing claw;
the material grabbing claws are provided with 14 in number, the material grabbing claws are 3 types,
2 first material grabbing claws (6-1) are respectively arranged on two sides of the tile nose (3) in a direction parallel to the length direction of the steel backing, 4 first material grabbing claws (6-1) are arranged on the welding plate (10), the part, located on the inner side of the steel backing, of each first material grabbing claw (6-1) is designed to be bent, and 2 folded edges are arranged on each first material grabbing claw (6-1);
two sides of the tile nose (3) are respectively provided with 1 second material grabbing claw (6-2), the second material grabbing claws (6-2) are positioned between the two positioning sheets (9), and the second material grabbing claws (6-2) are provided with 1 folded edge;
two edges of the steel back (2) on two sides of the tile nose (3) are respectively provided with 2 third material grabbing claws (6-3) which point to different directions, the third material grabbing claws (6-3) are arranged along the length direction of the steel back (2), and the third material grabbing claws (6-3) are provided with 2 folded edges.
8. The composite brake shoe for improving the bonding strength according to claim 1, wherein the steel backing (2) is provided with mounting holes (7) at two sides of the tile nose (3), the two mounting holes (7) are symmetrically distributed at two sides of the tile nose (3), and the mounting holes (7) are used for positioning.
9. The composite brake shoe for improving the bonding strength according to claim 1, wherein two protruding positioning columns (8) are arranged on the outer side of the steel backing (2), and the two positioning columns (8) are symmetrically arranged on two sides of the shoe nose (3); the positioning column (8) is embedded into and penetrates through the steel back (2) and is riveted to the inner side of the steel back (2); the positioning column (8) is in a circular truncated cone shape; and the positioning column (8) is used for mounting and positioning the brake shoe and the tile support.
10. The composite brake shoe for improving the bonding strength as claimed in claim 1, wherein the shoe nose (3) is provided with positioning pieces (9) at both sides; 2 positioning pieces (9) are respectively arranged on two sides of the tile nose (3), the positioning pieces (9) are arranged along the length direction of the steel backing (2), and the two positioning pieces (9) are distributed in parallel; the positioning plate (9) is embedded into and penetrates through the steel back (2) and is riveted to the inner side of the steel back (2); the structure of the positioning sheet (9) on the inner side of the steel back (2) is zigzag and is used for preventing the brake shoe from rotating left, right, front and back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120713695.3U CN217207440U (en) | 2021-04-08 | 2021-04-08 | Composite brake shoe capable of improving bonding strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120713695.3U CN217207440U (en) | 2021-04-08 | 2021-04-08 | Composite brake shoe capable of improving bonding strength |
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| Publication Number | Publication Date |
|---|---|
| CN217207440U true CN217207440U (en) | 2022-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120713695.3U Active CN217207440U (en) | 2021-04-08 | 2021-04-08 | Composite brake shoe capable of improving bonding strength |
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| CN (1) | CN217207440U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4390173A1 (en) * | 2022-12-23 | 2024-06-26 | Nabtesco Corporation | Brake shoe for a vehicle |
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2021
- 2021-04-08 CN CN202120713695.3U patent/CN217207440U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4390173A1 (en) * | 2022-12-23 | 2024-06-26 | Nabtesco Corporation | Brake shoe for a vehicle |
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