Cover drum brake
By using an electric brake system in the cover drum brake, the electric drive lever and spring pull rod are used to achieve expansion and contraction of the brake tiles, which solves the problem of poor oil return, insufficient pressure, excessive residual pressure and insufficient hydraulic brake system. The problem of stability achieves more efficient, environmentally friendly and economical braking effects.
Patent Information
- Application Number
- CN202421347774.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-13
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-06-13
AI Technical Summary
The existing hydraulic brake system of the drum brake in the housing has problems such as poor oil return, insufficient pressure, and excessive residual pressure. The hydraulic system is unstable, which will cause pollution to the environment and be costly.
A cover drum brake is designed, using an electric brake system, and the braking system is achieved through the combination of base, mounting block, bearing, connecting rod, brake arm, spring barrel and drive device, and the electric drive lever and spring pull rod are used to achieve braking. The expansion and contraction of the tile replaces the traditional hydraulic braking system.
The electric braking system solves the problems of poor oil return, insufficient pressure, excessive residual pressure and unstable hydraulic system, avoids the pollution of the environment by hydraulic pressure, reduces costs, and has a simple structure, safe and reliable structure.
Smart Images
Figure CN222479285U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field related to brakes, in particular to a cover drum brake. Background Art
[0002] The brake is a device that has the function of slowing down, stopping or keeping the moving parts in a stopped state. It is a mechanical part that stops or slows down the moving parts in the machine. Commonly known as brakes, brakes. The brake is mainly composed of a frame, brake parts and operating devices. With the revitalization and development of the equipment manufacturing industry, the output of domestic brakes has also increased significantly, and the sales revenue of the brake industry has grown synchronously. There are different types of brakes, among which drum brakes are widely used. Drum brakes are a braking system that uses a brake transmission mechanism to make the brake shoe press the brake friction plate against the inside of the brake drum, thereby generating braking force. The braking effect of the drum brake is very good and has a long service life. Therefore, a cover drum brake is particularly needed.
[0003] However, the existing drum brakes and most brake hydraulic braking systems have problems such as poor oil return in the hydraulic system, insufficient system pressure, and excessive residual pressure. The poor oil return in the hydraulic system is generally difficult to detect. Secondly, the hydraulic pressure will pollute the environment, and the hydraulic cost is high and the hydraulic system is unstable. Utility Model Content
[0004] The purpose of the utility model is to provide a cover drum brake to solve the problems of the existing cover drum brake proposed in the above background technology. Most of the brake hydraulic braking systems have the problems of poor oil return of the hydraulic system, insufficient system pressure, excessive residual pressure, and poor oil return of the hydraulic system is generally difficult to be discovered. Secondly, the hydraulic pressure will cause pollution to the environment, and the hydraulic cost is high and the hydraulic system is unstable.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cover drum brake, comprising a base, a mounting block fixedly mounted on one side surface of the base, first bearings are arranged at both ends of the mounting block, a first connecting rod is arranged at one end of the first bearing, a first brake arm is connected to one end of the first connecting rod, a second brake arm is connected to one end of the first connecting rod, a brake shoe is arranged at one end of the first brake arm, a cover drum is arranged at one end of the brake shoe, second bearings are arranged at both ends of the first brake arm, a first connecting column is arranged at one end of the second bearing, a brake pull rod is fixedly connected to one end of the first connecting column, a second connecting column is fixedly connected to one end of the brake pull rod, a lever is arranged at one end of the second bearing, third bearings are arranged at both ends of the lever, a second connecting rod is arranged at one end of the third bearing, a spring cylinder is fixedly mounted on one side surface of the base, a spring is fixedly mounted inside the spring cylinder, a spring pull rod is arranged at one end of the spring, a torque nut is threadedly connected to one end of the spring pull rod, a connecting block is arranged at one end of the lever, and a driving device is arranged at one end of the lever.
[0006] Preferably, a mounting plate is fixedly mounted on one side surface of the base, a mounting column is fixedly mounted on one end of the mounting plate, and a limiting block is provided at one end of the mounting column.
[0007] Preferably, the first connecting rod forms a rotating structure with the mounting block through the first bearing, and one end of the first brake arm and the second brake arm are both provided with brake shoes.
[0008] Preferably, both ends of the first connecting column and the second connecting column are provided with second bearings, and the first connecting column forms a rotating structure with the first brake arm through the second bearings.
[0009] Preferably, the second connecting column and the lever form a rotating structure through a second bearing, and the second brake arm and the second connecting rod form a rotating structure through a third bearing.
[0010] Preferably, the spring pull rod forms a telescopic structure through a spring and a spring tube.
[0011] Preferably, two groups of the limit blocks are provided, and a limit groove is formed between the two groups of limit blocks.
[0012] Compared with the prior art, the utility model has the following beneficial effects: the cover drum brake is provided with a base, a mounting block, a first bearing, a first connecting rod, a first brake arm, a second brake arm, a brake shoe, a cover drum, a second bearing, a first connecting column, a brake rod, a second connecting column, a lever, a third bearing, a second connecting rod, a spring drum, a spring, a spring rod, a torque nut, a connecting block, a driving device, a mounting plate, a mounting column, and a limit block. When the driving device is energized to lift the lever, the lever will drive the brake rod to move, at which time the first brake arm and the second brake arm will expand to both ends, and the brake shoe will stop braking. When the driving device is powered off, the lever falls, and the spring force drives the spring rod to press down. The generated spring force will be transmitted to the brake shoe through the first brake arm and the second brake arm, and the two brake shoes will gather toward the middle to achieve a braking effect. This electric braking system replaces the transmission hydraulic brake, solves the problems of poor oil return in the hydraulic system, insufficient system pressure, excessive residual pressure, and instability of the hydraulic system, and also avoids the pollution of the hydraulic system to the environment. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of the side view of the appearance structure of the utility model;
[0014] Figure 2 This is a schematic diagram of the structure of the mounting block and the first brake arm cooperating with each other in the utility model;
[0015] Figure 3 This is a schematic diagram of the structure of the first brake arm and the brake shoe cooperating with each other in the utility model;
[0016] Figure 4 This is a schematic diagram of the structure of the first connecting column and the brake rod cooperating with each other in the utility model;
[0017] Figure 5 This is a schematic diagram of the structure of the spring tube and the spring cooperating with each other in the utility model;
[0018] Figure 6 This is a schematic diagram of the structure in which the mounting plate and mounting column cooperate with each other in the utility model.
[0019] In the figure: 1. base; 2. mounting block; 3. first bearing; 4. first connecting rod; 5. first brake arm; 6. second brake arm; 7. brake shoe; 8. cover cylinder; 9. second bearing; 10. first connecting column; 11. brake pull rod; 12. second connecting column; 13. lever; 14. third bearing; 15. second connecting rod; 16. spring cylinder; 17. spring; 18. spring pull rod; 19. torque nut; 20. connecting block; 21. drive device; 22. mounting plate; 23. mounting column; 24. limit block. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figure 1-6The utility model provides a technical solution: a drum-type brake, comprising a base 1, a mounting block 2 is fixedly mounted on one side surface of the base 1, first bearings 3 are arranged at both ends of the mounting block 2, a first connecting rod 4 is arranged at one end of the first bearing 3, a first brake arm 5 is connected to one end of the first connecting rod 4, a second brake arm 6 is connected to one end of the first connecting rod 4, a brake shoe 7 is arranged at one end of the first brake arm 5, a drum 8 is arranged at one end of the brake shoe 7, second bearings 9 are arranged at both ends of the first brake arm 5, a first connecting column 10 is arranged at one end of the second bearing 9, a brake pull rod 11 is fixedly connected to one end of the first connecting column 10, and a brake pull rod 11 is fixedly connected to one end of the brake pull rod 11 A second connecting column 12 is provided, a lever 13 is provided at one end of the second bearing 9, third bearings 14 are provided at both ends of the lever 13, a second connecting rod 15 is provided at one end of the third bearing 14, a spring cylinder 16 is fixedly installed on one side surface of the base 1, a spring 17 is fixedly installed inside the spring cylinder 16, a spring pull rod 18 is provided at one end of the spring 17, and a torque nut 19 is threadedly connected to one end of the spring pull rod 18, a connecting block 20 is provided at one end of the lever 13, and a driving device 21 is provided at one end of the lever 13, through the base 1, the mounting block 2, the first bearing 3, the first connecting rod 4, the first brake arm 5, the second brake arm 6, the brake shoe 7, the cover cylinder 8, the second bearing 9, the first A connecting column 10, a brake rod 11, a second connecting column 12, a lever 13, a third bearing 14, a second connecting rod 15, a spring tube 16, a spring 17, a spring rod 18, a torque nut 19, a connecting block 20 and a driving device 21 are arranged. When the driving device 21 is energized, one end of the lever 13 is lifted, and the other end of the lever 13 rotates at one end of the second brake arm 6 through the second connecting rod 15. At this time, the spring rod 18 pulls the spring 17, and the brake rod 11 is also driven to move. The movement of the brake rod 11 causes the two brake shoes 7 to expand outward at the same time, so that the brake shoes 7 will stop braking. When braking is required, the driving device 21 is powered off and the lever 13 is rotated at one end of the second brake arm 6. The lifted end of the rod 13 will be put down, and at this time the spring 17 drives the spring pull rod 18 to be pressed down, and the spring force generated by it is transmitted to the two brake shoes 7 through the first brake arm 5 and the second brake arm 6, so that the two brake shoes 7 are simultaneously contracted toward the middle, so that the brake shoes 7 will perform braking work, and secondly, the torque of the spring 17 can be adjusted by the torque nut 19, which is highly practical. This electric braking system replaces the hydraulic braking of the transmission, solves the problems of poor oil return of the hydraulic system, insufficient system pressure, excessive residual pressure and unstable hydraulic system, and also avoids the pollution of the environment by hydraulic pressure. Compared with hydraulic braking, the electric braking system has lower cost, simpler structure, safety and reliability.
[0022] Furthermore, a mounting plate 22 is fixedly installed on one side surface of the base 1, a mounting column 23 is fixedly installed on one end of the mounting plate 22, and a limiting block 24 is provided at one end of the mounting column 23. Through the arrangement of the mounting plate 22 and the mounting column 23, the lower end of the driving device 21 can be installed on the mounting column 23, thereby supporting and fixing the driving device 21.
[0023] Furthermore, the first connecting rod 4 forms a rotating structure with the mounting block 2 through the first bearing 3, and a brake shoe 7 is provided at one end of the first brake arm 5 and the second brake arm 6. Through the setting of the first bearing 3 and the first connecting rod 4, the first brake arm 5 and the second brake arm 6 rotate at one end of the mounting block 2 through the first bearing 3 and the first connecting rod 4, and the first brake arm 5 and the second brake arm 6 can perform braking work.
[0024] Furthermore, second bearings 9 are provided at both ends of the first connecting column 10 and the second connecting column 12. The first connecting column 10 forms a rotating structure with the first brake arm 5 through the second bearing 9. Through the setting of the second bearing 9, the first connecting column 10 and the second connecting column 12 can be rotated at one end of the first brake arm 5 and the lever 13 respectively through the second bearing 9, and the brake rod 11 can move smoothly.
[0025] Furthermore, the second connecting column 12 forms a rotating structure with the lever 13 through the second bearing 9, and the second brake arm 6 forms a rotating structure with the second connecting rod 15 through the third bearing 14. Through the setting of the third bearing 14 and the second connecting rod 15, the lever 13 can rotate at one end of the second brake arm 6 through the third bearing 14 and the second connecting rod 15.
[0026] Furthermore, the spring pull rod 18 forms a telescopic structure with the spring tube 16 through the spring 17. Through the arrangement of the spring 17 and the spring pull rod 18, the spring pull rod 18 drives the spring 17 to move, so that the spring 17 can generate a spring force to drive the brake shoe 7 to brake.
[0027] Furthermore, two groups of limit blocks 24 are provided, and a limit groove is formed between the two groups of limit blocks 24. Through the provision of the limit blocks 24, the limit groove formed between the two groups of limit blocks 24 will limit and fix the lower end of the driving device 21.
[0028] Working principle: When the driving device 21 is energized, one end of the lever 13 is lifted, and the other end of the lever 13 rotates at one end of the second brake arm 6 through the second connecting rod 15. At this time, the spring pull rod 18 will pull the spring 17, and the brake pull rod 11 will also be driven to move. The movement of the brake pull rod 11 causes the two brake shoes 7 to expand outward at the same time, so that the brake shoes 7 will stop braking. When braking is required, the driving device 21 is powered off, and the lifted end of the lever 13 will be lowered. At this time, the spring 17 drives the spring pull rod 18 to press down, and the spring force generated by it is transmitted to the two brake shoes 7 through the first brake arm 5 and the second brake arm 6, causing the two brake shoes 7 to shrink toward the middle at the same time, so that the brake shoes 7 will brake.
[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A drum brake, comprising a base (1), characterized in that: A mounting block (2) is fixedly mounted on a surface of one side of the base (1); first bearings (3) are arranged at both ends of the mounting block (2); a first connecting rod (4) is arranged at one end of the first bearing (3); a first brake arm (5) is connected to one end of the first connecting rod (4); a second brake arm (6) is connected to one end of the first connecting rod (4); a brake shoe (7) is arranged at one end of the first brake arm (5); a cover tube (8) is arranged at one end of the brake shoe (7); second bearings (9) are arranged at both ends of the first brake arm (5); a first connecting column (10) is arranged at one end of the second bearing (9); a brake pull rod (11) is fixedly connected to one end of the first connecting column (10); One end of the brake rod (11) is fixedly connected to a second connecting column (12), one end of the second bearing (9) is provided with a lever (13), both ends of the lever (13) are provided with a third bearing (14), one end of the third bearing (14) is provided with a second connecting rod (15), a spring cylinder (16) is fixedly mounted on a surface of one side of the base (1), a spring (17) is fixedly mounted inside the spring cylinder (16), one end of the spring (17) is provided with a spring rod (18), one end of the spring rod (18) is threadedly connected to a torque nut (19), one end of the lever (13) is provided with a connecting block (20), and one end of the lever (13) is provided with a driving device (21).
2. A cover drum brake according to claim 1, characterized in that: A mounting plate (22) is fixedly mounted on one side surface of the base (1), a mounting column (23) is fixedly mounted on one end of the mounting plate (22), and a limiting block (24) is provided at one end of the mounting column (23).
3. A cover drum brake according to claim 1, characterized in that: The first connecting rod (4) forms a rotating structure with the mounting block (2) via the first bearing (3), and a brake shoe (7) is provided at one end of each of the first brake arm (5) and the second brake arm (6).
4. A cover drum brake according to claim 1, characterized in that: Second bearings (9) are provided at both ends of the first connecting column (10) and the second connecting column (12); the first connecting column (10) forms a rotating structure with the first brake arm (5) via the second bearing (9).
5. A cover drum brake according to claim 1, characterized in that: The second connecting column (12) forms a rotating structure with the lever (13) via the second bearing (9), and the second brake arm (6) forms a rotating structure with the second connecting rod (15) via the third bearing (14).
6. A cover drum brake according to claim 1, characterized in that: The spring pull rod (18) forms a telescopic structure with the spring tube (16) through the spring (17).
7. A cover drum brake according to claim 2, characterized in that: The limit blocks (24) are provided in two groups, and a limit groove is formed between the two groups of limit blocks (24).