CN218207573U

CN218207573U - Leading shoe wedge type brake

Info

Publication number: CN218207573U
Application number: CN202222878351.5U
Authority: CN
Inventors: 刘晓梅; 朱蕾; 臧志田
Original assignee: Qingdao Haitong Brake Co ltd
Current assignee: Qingdao Haitong Brake Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-01-03
Anticipated expiration: 2032-10-31

Abstract

The utility model relates to a wedge brake technical field, and disclose a leading shoe wedge brake, solved and adopted the cam rotation to realize that the brake shoe opens, can cause the range of opening of two brake shoes different, there is the problem of friction disc wearing and tearing speed asynchronism, causes two friction discs to wear inconsistent, and then can influence the problem of the whole life-span of stopper, it includes the brake cylinder body, one side of brake cylinder body is equipped with electric cylinder, is linked together through the intercommunicating pore between electric cylinder and the brake cylinder body, and electric cylinder's inside slidable mounting has the piston rod, and the one end of piston rod runs through the intercommunicating pore and extends to the inside of brake cylinder body, and the bilateral symmetry of brake cylinder body has seted up the opening; the design realizes synchronous opening of the leading brake shoe and the following brake shoe, further realizes equivalent abrasion rate of friction plates on the leading brake shoe and the following brake shoe, avoids waste of the friction plates on the following brake shoe, and prolongs the whole service life of the friction plates.

Description

Leading shoe wedge type brake

Technical Field

The utility model belongs to the technical field of wedge brake, specifically be a leading shoe wedge brake.

Background

A brake is a device having a function of decelerating, stopping, or maintaining a stopped state of a moving member (or a moving machine), and is a mechanical component that stops or decelerates a moving member in a machine, and is commonly referred to as a brake or a gate. The brake is used as a key part of the safety performance of the automobile, the braking performance is good or bad, the braking efficiency directly influences the safety of transportation, the braking efficiency is closely related to the friction of the brake, and the friction characteristic of the brake directly influences the overall braking performance of an automobile brake system.

The conventional brake is a drum brake, the drum brake mostly utilizes the rotation of a cam to realize the opening of brake shoes, however, the rotation of the cam can cause the opening range of the two brake shoes to be different, the problem of asynchronous abrasion speed of the friction plates exists, the abrasion of the two friction plates is inconsistent, and the integral service life of the brake can be influenced.

SUMMERY OF THE UTILITY MODEL

To the above situation, for overcoming prior art's defect, the utility model provides a lead shoe wedge brake, the effectual cam that adopts among the above-mentioned background of solution rotates and realizes that the brake shoe opens, can cause the range of opening of two brake shoes different, has the asynchronous problem of friction disc wearing and tearing speed, causes two friction disc wearing and tearing inconsistent, and then can influence the problem in the whole life-span of stopper.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a lead shoe wedge brake, including the brake cylinder body, one side of brake cylinder body is equipped with electric cylinder, be linked together through the intercommunicating pore between electric cylinder and the brake cylinder body, electric cylinder's inside slidable mounting has a piston rod, the one end of piston rod runs through the intercommunicating pore and extends to the inside of brake cylinder body, the opening has been seted up to the bilateral symmetry of brake cylinder body, the bilateral symmetry of brake cylinder body runs through in the inside push rod of opening, one side of brake cylinder body is equipped with leads the brake shoe, the opposite side of brake cylinder body is equipped with from the brake shoe, lead the brake shoe and keep away from one side mutually from the brake shoe and all be equipped with the friction disc, lead the brake shoe and all be equipped with the link plate from the lateral wall that the brake shoe is close to one side mutually, connect through linking shaft between push rod and the link plate, connect through pushing mechanism between piston rod and two push rods, connect through linking piece between two link plate.

Preferably, pushing mechanism includes ejector pad, gyro wheel, hypotenuse, resilience spring one, backstop piece and stabilizing member, the one end of two push rods all is equipped with the extrusion piece, the bottom of piston rod is equipped with the ejector pad that is located two extrusion piece tops, the ejector pad is the trapezium structure, two extrusion pieces are close to one side top mutually and have all been seted up the hypotenuse, two extrusion pieces are close to one side bottom mutually and all are equipped with the backstop piece, the gyro wheel is installed to the impartial distance in both sides of ejector pad, gyro wheel and hypotenuse swing joint, all the cover is equipped with the resilience spring one that is located between extrusion piece and the braking cylinder body on two push rods, be connected through the stabilizing member between braking cylinder body and two extrusion pieces.

Preferably, the stabilizing part comprises a sliding block, a sliding rod and a second rebound spring, the sliding block is arranged at the bottom end of the extrusion block, the sliding rod is installed at the inner bottom of the braking cylinder body, the two sliding blocks are slidably sleeved outside the sliding rod, and the second rebound spring connected with the side walls of the two sliding blocks is sleeved in the middle of the sliding rod.

Preferably, the linking piece includes installation axle, links up a section of thick bamboo, pull rod and links up the spring, and equal symmetry is equipped with the installation axle on two linking boards, and the epaxial equal movable sleeve of installation is equipped with links up a section of thick bamboo, links up and connects through the pull rod between a section of thick bamboo for two, and the one end of pull rod all extends to the inside that links up a section of thick bamboo, and links up through linking spring coupling between an inner wall and the pull rod of a section of thick bamboo.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) In the work, the pneumatic wedge type brake is provided with a brake cylinder body, an electric cylinder, a communication hole, a piston rod, a leading brake shoe, friction plates, a connecting plate, a following brake shoe, a push rod and a pushing mechanism, the leading brake shoe and the following brake shoe are opened in a pneumatic mode, the leading brake shoe and the following brake shoe are opened synchronously, the two friction plates are stressed the same, the abrasion rates of the friction plates on the leading brake shoe and the following brake shoe are equivalent, the waste of the friction plates on the following brake shoe is avoided, the integral service life of the friction plates is prolonged, the service life of the brake is prolonged, meanwhile, the pneumatic wedge type brake has lower cost compared with a drum brake, larger braking torque is achieved, and the braking efficiency is effectively improved.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

fig. 1 is a schematic structural view of a leading shoe wedge brake according to the present invention;

FIG. 2 is an enlarged schematic view of the structure of FIG. 1;

FIG. 3 is a schematic front view of the structure of FIG. 1 according to the present invention;

in the figure: 1. a brake cylinder; 2. an electric cylinder; 3. a communicating hole; 4. a piston rod; 5. leading the brake shoe; 6. a friction plate; 7. a connector tile; 8. a slave brake shoe; 9. a push rod; 10. a connecting shaft; 11. a push block; 12. a roller; 13. extruding the block; 14. a bevel edge; 15. a first rebound spring; 16. a stop block; 17. a slider; 18. a slide bar; 19. a second rebound spring; 20. installing a shaft; 21. a joining cylinder; 22. a pull rod; 23. engaging the spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

By figure 1 to 3, the utility model discloses a brake cylinder body 1, one side of brake cylinder body 1 is equipped with electric cylinder 2, be linked together through intercommunicating pore 3 between electric cylinder 2 and the brake cylinder body 1, electric cylinder 2's inside slidable mounting has piston rod 4, the one end of piston rod 4 runs through intercommunicating pore 3 and extends to the inside of brake cylinder body 1, the opening has been seted up to the bilateral symmetry of brake cylinder body 1, brake cylinder body 1's bilateral symmetry runs through in the inside push rod 9 of opening, one side of brake cylinder body 1 is equipped with leading brake shoe 5, the opposite side of brake cylinder body 1 is equipped with from brake shoe 8, leading brake shoe 5 and keeping away from one side mutually from brake shoe 8 and all being equipped with friction disc 6, leading brake shoe 5 and all being equipped with joint plate 7 from the lateral wall that brake shoe 8 is close to one side mutually, connect through joint axle 10 between push rod 9 and the joint plate 7, be connected through pushing mechanism between piston rod 4 and two push rod 9, connect through the joint piece between two joint plate 7.

The pushing mechanism comprises push blocks 11, rollers 12, bevel edges 14, first rebound springs 15, stop blocks 16 and stabilizing parts, extrusion blocks 13 are arranged at one ends of two push rods 9, the bottom end of a piston rod 4 is provided with the push blocks 11 positioned above the two extrusion blocks 13, the push blocks 11 are of a trapezoidal structure, the bevel edges 14 are arranged at the top ends of the two extrusion blocks 13 close to one side, the stop blocks 16 are arranged at the bottom ends of the two extrusion blocks 13 close to one side, the rollers 12 are arranged at equal distances on two sides of the push blocks 11, the rollers 12 are movably connected with the bevel edges 14, the first rebound springs 15 positioned between the extrusion blocks 13 and the brake cylinder body 1 are sleeved on the two push rods 9, the brake cylinder body 1 is connected with the two extrusion blocks 13 through the stabilizing parts, the stabilizing parts comprise sliding blocks 17, sliding rods 18 and second rebound springs 19, the bottom ends of the extrusion blocks 13 are provided with the sliding blocks 17, the sliding rods 18 are sleeved at the middle parts of the sliding blocks 18, and the second rebound springs 19 are connected with the side walls of the sliding blocks 17;

when braking is needed, under the action of the electric cylinder 2, the piston rod 4 slides in the communicating hole 3, the piston rod 4 drives the pushing block 11 to move, the two push rods 9 are convenient to be away from each other under the action of the pushing mechanism, the push rods 9 push the connecting plate 7 under the action of the connecting shaft 10, the connecting plate 7 pushes the leading shoe 5 and the trailing shoe 8 to be away from each other, the rebound spring I15 is compressed, the extrusion block 13 drives the sliding block 17 to slide on the sliding rod 18 and stretch the rebound spring II 19, the stop block 16 on the extrusion block 13 effectively limits the downward moving distance of the pushing block 11, the pushing block 11 moves downward to drive the roller 12 to roll on the roller 14, the friction force is effectively reduced, the synchronous movement of the leading shoe 5 and the trailing shoe 8 is realized, the synchronous separation of the two rebound springs 6 is realized, the traveling distance of the leading shoe 5 and the trailing shoe 8 in the braking process is consistent, the leading shoe 5 and the trailing shoe 8 are subjected to the same force, the trailing shoe 5 and the trailing shoe 8 are further subjected to the same as the friction plate, the service life of the friction plate 8 is fully prolonged; when the brake is contacted, the piston rod 4 drives the push block 11 to move upwards, and under the reverse acting force of the second rebound spring 19 and the first rebound spring 15, the two push rods 9 are close to each other, and further the leading brake shoe 5 and the trailing brake shoe 8 are close to each other.

The connecting piece comprises mounting shafts 20, connecting cylinders 21, pull rods 22 and connecting springs 23, the mounting shafts 20 are symmetrically arranged on the two connecting plates 7, the connecting cylinders 21 are movably sleeved on the mounting shafts 20, the two connecting cylinders 21 are connected through the pull rods 22, one ends of the pull rods 22 extend into the connecting cylinders 21, and the inner walls of the connecting cylinders 21 are connected with the pull rods 22 through the connecting springs 23; through the design of the mounting shaft 20, the connecting cylinder 21, the pull rod 22 and the connecting spring 23, the leading brake shoe 5 and the driven brake shoe 8 are stably connected, and further the leading brake shoe 5 and the driven brake shoe 8 are in the braking process, the push rod 9 can realize that the leading brake shoe 5 and the driven brake shoe 8 swing around the mounting shaft 20, the swinging amplitude of the leading brake shoe 5 and the driven brake shoe 8 is consistent, the stress of the two friction plates 6 is the same, and the overall service life of the wedge brake is shortened due to the fact that the two friction plates 6 are stressed unevenly.

Claims

1. A leading shoe wedge brake, includes brake cylinder body (1), its characterized in that: one side of the brake cylinder body (1) is provided with an electric cylinder (2), the electric cylinder (2) is communicated with the brake cylinder body (1) through a communication hole (3), a piston rod (4) is slidably mounted inside the electric cylinder (2), one end of the piston rod (4) penetrates through the communication hole (3) and extends to the inside of the brake cylinder body (1), openings are symmetrically formed in two sides of the brake cylinder body (1), push rods (9) inside the openings are symmetrically penetrated through two sides of the brake cylinder body (1), one side of the brake cylinder body (1) is provided with a leading brake shoe (5), the other side of the brake cylinder body (1) is provided with a following brake shoe (8), friction plates (6) are arranged on one sides of the leading brake shoe (5) and the following brake shoe (8) which are far away from each other, connecting plates (7) are arranged on the side walls of the leading brake shoe (5) and the side walls of the following brake shoe (8) which are close to one side, the push rods (9) and the connecting plates (7) are connected through connecting shafts (10), the piston rod (4) is connected with the two push rods (9) through a pushing mechanism, and the connecting plate (7) is connected through a connecting piece.

2. A leading shoe wedge brake as set forth in claim 1, wherein: push mechanism includes ejector pad (11), gyro wheel (12), hypotenuse (14), resilience spring (15), backstop (16) and stabilizing member, the one end of two push rods (9) all is equipped with extrusion piece (13), the bottom of piston rod (4) is equipped with ejector pad (11) that are located two extrusion piece (13) tops, ejector pad (11) are the trapezium structure, two extrusion piece (13) are close to one side top mutually and have all seted up hypotenuse (14), two extrusion piece (13) are close to one side bottom mutually and all are equipped with backstop (16), gyro wheel (12) are installed to the impartial distance in both sides of ejector pad (11), gyro wheel (12) and hypotenuse (14) swing joint, all overlap on two push rods (9) and be equipped with resilience spring (15) that are located between extrusion piece (13) and brake cylinder body (1), connect through the stabilizing member between brake cylinder body (1) and two extrusion piece (13).

3. A leading shoe wedge brake as set forth in claim 2, wherein: the stabilizing part comprises a sliding block (17), a sliding rod (18) and a second rebound spring (19), the sliding block (17) is arranged at the bottom end of the extrusion block (13), the sliding rod (18) is installed at the inner bottom of the brake cylinder body (1), the two sliding blocks (17) are slidably sleeved on the outer portion of the sliding rod (18), and the second rebound spring (19) connected with the side walls of the two sliding blocks (17) is sleeved at the middle of the sliding rod (18).

4. A leading shoe wedge brake as set forth in claim 1, wherein: the joint piece includes installation axle (20), a joint section of thick bamboo (21), pull rod (22) and links up spring (23), and equal symmetry is equipped with installation axle (20) on two joint board (7), and equal movable sleeve is equipped with a joint section of thick bamboo (21) on installation axle (20), links up through pull rod (22) between a section of thick bamboo (21) for two and connects, and the one end of pull rod (22) all extends to the inside of a joint section of thick bamboo (21), and links up and is connected through linking spring (23) between the inner wall of a section of thick bamboo (21) and pull rod (22).