Double-sided brake shoe

Abstract

The utility model relates to the technical field of automobile braking, in particular to a double-sided brake shoe which comprises a brake base, and friction plates are fixedly connected to two sides of the brake shoe, so that the brake effect is achieved when the friction plate on the outer side of the brake shoe abuts against the side face of a brake drum during brake operation. When the friction plate on the outer side of the brake shoe is seriously abraded due to the fact that the brake shoe is used too many times, the sliding groove can be detached by detaching the bolt for connecting the sliding groove with the brake base, and then the brake shoe is detached by detaching the bolt for fixedly connecting the brake shoe with the driven rod; when the brake shoe is turned, the friction plate originally located on the inner side of the brake shoe faces the outer side, then all parts are installed on the brake base, and the brake function can be restored, so that the time for replacing the friction plate can be prolonged, the operation for obtaining the brake capacity again is simple, the period for replacing the friction plate is long, and the replacement is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile braking, in particular to a double-sided brake shoe. Background Art

[0002] The braking system of a car is crucial to its safety. The mainstream technologies of the current braking system of a car are drum brakes and disc brakes. Drum brakes mainly include brake drums, brake chassis, actuation systems, brake shoes, etc. The principle of drum brakes is that the actuation system receives the driver's command and pushes the brake shoe to move toward the brake drum. The brake drum and the brake chassis rotate relative to each other, and the brake shoe and the brake drum rub to brake. The outer surface of the brake shoe is provided with a friction plate, and the friction plate and the brake shoe are generally connected by riveting or bonding.

[0003] However, in actual use, traditional brake shoes have the following main disadvantages:

[0004] In actual use, the traditional brake shoe has a friction plate on only one side. After long-term use, the friction plate is worn out, resulting in poor braking effect. The replacement cycle of the friction plate is short and the replacement process is complicated.

[0005] In actual use, the process of replacing the friction plate is complicated to disassemble, which makes the efficiency of replacing the friction plate low. Summary of the invention

[0006] The utility model aims to provide a double-sided brake shoe to solve the problems raised in the above background technology.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions:.

[0008] A double-sided brake shoe is provided, comprising a brake base, a brake mechanism is fixedly connected to the brake base, a brake drum is covered on the brake mechanism, and the brake drum is fixedly connected to the brake base; wherein

[0009] The brake mechanism comprises:

[0010] Two driving assemblies are fixedly mounted on the brake base, and the two driving assemblies are symmetrically arranged about a plane where the axis of the brake base is located. The brake base is also slidably connected with four driven assemblies, and the four driven assemblies are respectively arranged on both sides of the two driving assemblies. The brake base is also provided with two brake shoes, and the two ends of the two brake shoes are respectively fixedly connected to one end of the four driven assemblies.

[0011] Furthermore, the two drive components each include:

[0012] A hydraulic cylinder, wherein the output end of the hydraulic cylinder is fixedly connected with a triangular block, the two sides of the triangular block respectively correspond to the positions of one end of two driven components, and the two side surfaces of the triangular block are parallel to the corresponding surfaces of one end of the two driven components.

[0013] Further, the four driven components each include:

[0014] A slide groove, the slide groove is fixedly connected to the brake base by bolts, a driven rod is slidably connected to the slide groove, one end of the driven rod is fixedly connected to one end of the brake shoe by bolts, and a return spring is also fixedly connected to the driven rod, and the other end of the return spring is fixedly connected to the slide groove.

[0015] Furthermore, friction plates are fixedly connected to both sides of the two brake shoes, and connecting holes are provided on the friction plates. One end of the driven rod is fixedly connected to the brake shoes through the connecting holes.

[0016] Furthermore, the brake drum is provided with heat dissipation holes.

[0017] The beneficial effects of the utility model are:

[0018] Since friction plates are fixedly connected on both sides of the brake shoe, when the brake is operated, the friction plates on both sides of the brake shoe are close to the sides of the brake drum. When the outer friction plates on the brake shoe abut against the sides of the brake drum, the braking effect is achieved. At this time, there is no friction between the friction plates on the inner side of the brake shoe and the sides of the brake drum and they will not wear. When the brake shoe is used too many times and the friction plates on the outer side of the brake shoe are severely worn, the slide slot can be removed by removing the bolts connecting the slide slot and the brake base, and then the bolts fixing the brake shoe and the driven rod can be removed to remove the brake shoe. Then, the brake shoe can be turned so that the friction plates originally on the inner side of the brake shoe face outward, and then the various parts can be installed on the brake base to restore the braking function. This arrangement can extend the time for replacing the friction plates, makes the operation of regaining braking ability simple, and the cycle for replacing the friction plates is long and more convenient.

[0019] When the brake shoe is used too many times and the friction plate on the outside of the brake shoe is severely worn, the slide slot can be removed by removing the bolts connecting the slide slot and the brake base, and then the bolts fixing the brake shoe to the driven rod can be removed to remove the brake shoe. This arrangement makes the entire process of removing and replacing the friction plate simpler and more efficient in replacing the friction plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the overall three-dimensional structure of the brake mechanism of the utility model;

[0023] Figure 4 It is a schematic diagram of the overall three-dimensional structure of the driven component of the utility model;

[0024] Figure 5 This is a schematic diagram of the overall three-dimensional structure of the brake shoe of the utility model;

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1. Brake base;

[0027] 2. Braking mechanism; 21. Driving assembly; 211. Hydraulic cylinder; 212. Triangular block; 22. Follower assembly; 221. Slide; 222. Follower rod; 223. Return spring; 23. Brake shoe; 231. Friction plate; 232. Connecting hole;

[0028] 3. Brake drum; 31. Cooling holes. DETAILED DESCRIPTION

[0029] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0030] The utility model provides the following preferred embodiments:

[0031] Reference Figure 1-2 As shown, a double-sided brake shoe comprises a brake base 1, a brake mechanism 2 is fixedly connected to the brake base 1, a brake drum 3 is covered on the brake mechanism 2, and the brake drum 3 is fixedly connected to the brake base 1; wherein

[0032] The brake mechanism 2 comprises:

[0033] Two driving components 21 are fixedly mounted on the brake base 1. The two driving components 21 are symmetrically arranged about a plane where the axis of the brake base 1 is located. The brake base 1 is also slidably connected with four driven components 22. The four driven components 22 are respectively arranged on both sides of the two driving components 21. The brake base 1 is also provided with two brake shoes 23. The two ends of the two brake shoes 23 are respectively fixedly connected to one end of the four driven components 22.

[0034] Since the driving assembly 21 is fixedly mounted on the brake base 1, when a braking operation is required, the driver controls the driving assembly 21 to work by operating, so that the driving assembly 21 extends. During the extension of the driving assembly 21, the driving assembly 21 is in a stationary state relative to the brake base 1. Since the brake base 1 is also slidably connected with four follower assemblies 22, the four follower assemblies 22 are respectively arranged on both sides of the two driving assemblies 21. Therefore, during the extension of the driving assembly 21, one end of the driving assembly 21 abuts against the follower assembly 22, thereby pushing the follower assembly 22 to slide on the brake base 1. In addition, since the brake base 1 is also provided with two brake shoes 23, the two ends of the two brake shoes 23 are respectively fixedly connected with one end of the four follower assemblies 22. When the follower assembly 22 moves, the brake shoe 23 is pushed to move, so that the brake shoe 23 contacts the brake drum 3, thereby generating friction force, and achieving the braking effect under the action of the friction force. Such a configuration makes the device more convenient to disassemble.

[0035] Reference Figure 3 As shown, the two driving components 21 each include:

[0036] The hydraulic cylinder 211 has a triangular block 212 fixedly connected to its output end. Both sides of the triangular block 212 correspond to one end of the two driven components 22 . The two side surfaces of the triangular block 212 are parallel to the corresponding surfaces of one end of the two driven components 22 .

[0037] Since the output end of the hydraulic cylinder 211 is fixedly connected to the triangular block 212, when the brake operation is performed, the output end of the hydraulic cylinder 211 drives the triangular block 212 to move together. Since the two sides of the triangular block 212 correspond to the positions of one end of the two driven components 22 respectively, when the triangular block 212 moves, it always abuts against one end of the driven component 22. Since the two sides of the triangular block 212 are inclined surfaces, the driven component 22 is pushed to move outward during the movement of the triangular block 212.

[0038] Reference Figure 4 As shown, the four driven components 22 each include:

[0039] A slide groove 221 is fixedly connected to the brake base 1 by bolts, a driven rod 222 is slidably connected to the slide groove 221, one end of the driven rod 222 is fixedly connected to one end of the brake shoe 23 by bolts, and a return spring 223 is also fixedly connected to the driven rod 222, and the other end of the return spring 223 is fixedly connected to the slide groove 221.

[0040] The two sides of the triangular block 212 are respectively abutted against one end of the two follower rods 222, so under the pushing action of the triangular block 212, the follower rod 222 moves outward. Since the follower rod 222 slides on the slide groove 221, the position of the follower rod 222 is kept constant during the process of moving outward. Since one end of the follower rod 222 is fixedly connected to one end of the brake shoe 23 by bolts, when the follower rod 222 moves outward, the brake shoe 23 is driven to move together and abut against the brake drum 3, thereby achieving the braking effect. In this process, the return spring 223 is stretched. When the braking is completed, the hydraulic cylinder 211 contracts. At this time, the triangular block 212 moves therewith. Under the elastic force of the return spring 223, the follower rod 222 slides in the opposite direction on the slide groove 221, driving the brake shoe 23 to separate from the side of the brake drum 3, and the braking effect is cancelled.

[0041] Reference Figure 5 As shown, friction plates 231 are fixedly connected to both sides of the two brake shoes 23 . A connecting hole 232 is formed on the friction plate 231 . One end of the driven rod 222 is fixedly connected to the brake shoe 23 through the connecting hole 232 .

[0042] When the brake shoe 23 is used too many times and the friction plate 231 on the outer side of the brake shoe 23 is severely worn, the friction plate 231 on the inner side of the brake shoe 23 can be removed by removing the bolts connecting the slide groove 221 and the brake base 1, and then the slide groove 221 can be removed, and then the bolts fixing the brake shoe 23 and the driven rod 222 can be removed, and the brake shoe 23 can be removed. Then, when the brake shoe 23 is turned, the friction plate 231 originally located on the inner side of the brake shoe 23 faces the outside, and then the various parts are installed on the brake base, and the braking function can be restored. This arrangement can extend the time for replacing the friction plate 231, making it simple to regain the braking ability.

[0043] The brake drum 3 is provided with heat dissipation holes 31 .

[0044] During the braking process, heat is generated due to the friction between the friction plate 231 and the outer side of the brake drum 3. The heat dissipation holes 31 are provided to better dissipate the heat, which is beneficial to protecting the device and extending its service life.

[0045] The beneficial effects of the present invention are specifically embodied in that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-sided brake shoe, characterized in that: It comprises a brake base (1), a brake mechanism (2) is fixedly connected to the brake base (1), a brake drum (3) is covered on the brake mechanism (2), and the brake drum (3) is fixedly connected to the brake base (1); wherein The brake mechanism (2) comprises: Two drive assemblies (21), the drive assemblies (21) are fixedly mounted on a brake base (1), the two drive assemblies (21) are symmetrically arranged about a plane where the axis of the brake base (1) is located, the brake base (1) is also slidably connected to four driven assemblies (22), the four driven assemblies (22) are respectively arranged on both sides of the two drive assemblies (21), and the brake base (1) is also provided with two brake shoes (23), the two ends of the two brake shoes (23) are respectively fixedly connected to one end of the four driven assemblies (22).

2. A double-sided brake shoe according to claim 1, characterized in that: The two drive components (21) each include: A hydraulic cylinder (211), wherein the output end of the hydraulic cylinder (211) is fixedly connected to a triangular block (212), two sides of the triangular block (212) respectively correspond to the positions of one end of two driven assemblies (22), and two side surfaces of the triangular block (212) are parallel to corresponding surfaces at one end of the two driven assemblies (22).

3. A double-sided brake shoe according to claim 2, characterized in that: The four driven components (22) each include: A slide groove (221), the slide groove (221) is fixedly connected to the brake base (1) by bolts, a driven rod (222) is slidably connected to the slide groove (221), one end of the driven rod (222) is fixedly connected to one end of the brake shoe (23) by bolts, and a return spring (223) is also fixedly connected to the driven rod (222), and the other end of the return spring (223) is fixedly connected to the slide groove (221).

4. A double-sided brake shoe according to claim 3, characterized in that: Friction plates (231) are fixedly connected to both sides of the two brake shoes (23), and a connection hole (232) is provided on the friction plate (231). One end of the driven rod (222) is fixedly connected to the brake shoe (23) through the connection hole (232).

5. A double-sided brake shoe according to claim 4, characterized in that: The brake drum (3) is provided with a heat dissipation hole (31).

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