Air cut-off brake structure

Abstract

The utility model discloses an air-cut brake structure, which belongs to the technical field of automobile accessories and comprises a friction disc fixedly mounted on a spindle, and a brake disc component capable of being in contact with the friction disc is movably arranged on one side of the friction disc. A sleeve is rotationally arranged on the friction disc, a sliding seat which is fixedly arranged with the brake disc assembly is arranged on the sleeve in a sliding manner, and a spring which pushes the brake disc assembly to move towards one side of the friction disc and locks the friction disc is arranged between the sliding seat and the sleeve; a limiting piece is fixedly arranged at the end, close to one side of the friction disc, of the sleeve, and an air bag for pushing the sliding seat to move so as to enable the brake disc assembly and the friction disc to fall off is arranged between the limiting piece and the sliding seat. The utility model is used for solving the problems of high processing cost and complex disassembly, assembly and maintenance structure of the existing air-break brake structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile accessories, in particular to an air-cut brake structure. Background Art

[0002] The importance of the brake system in automotive safety braking technology is self-evident. It is a key technology for ensuring driving safety, especially in emergency situations, where the performance of the brake system is directly related to the safety of both the driver and the vehicle. However, existing brake systems are at risk of failure in certain situations, such as a sudden loss of air pressure, which undoubtedly poses a significant threat to driving safety.

[0003] Existing air brake structures often use pistons, plungers, and other components to control the braking action. For example, CN206297545U discloses an automatic air brake device for automobile handbrake and foot brake systems. This device automatically applies emergency braking when the air pressure in the pressure chamber drops or the air is suddenly cut off. Under the action of a pressure spring, the pressure spring pushes the piston to work normally. However, a problem with this air brake structure is that it is highly dependent on the sealing between the piston and the outer cylinder. When the sealing ring is damaged or the sealing is reduced, the braking performance will be reduced. In addition, the air brake structure requires higher processing precision during processing, and the disassembly and maintenance costs are high, and the price is relatively high. These problems limit the widespread application of air brakes, especially in situations that require fast response and high braking force.

[0004] Therefore, an air-cut brake structure with a simple braking structure and lower processing and disassembly costs is proposed to solve the above problems. Utility Model Content

[0005] In view of the above problems, the present invention provides an air-cut brake structure, which is used to solve the problems of high processing cost and complex disassembly and maintenance structure of the existing air-cut brake structure.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] An air-cut brake structure includes a friction disc fixedly mounted on a main shaft, and a brake disc assembly movably provided on one side of the friction disc and capable of contacting the friction disc.

[0008] A sleeve is rotatably provided on the friction disc, and a sliding seat is slidably provided on the sleeve and fixedly provided with the brake disc assembly. A spring is provided between the sliding seat and the sleeve to push the brake disc assembly toward one side of the friction disc and lock the friction disc.

[0009] A limiting piece is fixedly provided on the end portion of the sleeve close to the friction disc, and an air bag is provided between the limiting piece and the sliding seat to push the sliding seat to move so that the brake disc assembly and the friction disc fall off.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: through the provided spring, the brake disc assembly is pushed toward the friction disc, so that the brake disc assembly can contact the friction disc and play a braking role; high-pressure gas can be introduced into the airbag, and when the airbag is inflated and swells, the sliding seat and the connecting seat can be squeezed in a direction away from the friction disc, thereby releasing the brake; by changing the structure of the piston to a separate component installation, the processing accuracy of each part can be significantly reduced, and there is no need to control the sealing of the entire structure, so the cost of the entire brake can be reduced, and its structure is easier to install than the piston structure, and it is more convenient to disassemble and maintain.

[0011] As a further improvement of the above solution, a connecting seat is fixedly provided between the brake disc assembly and the sliding seat, and an air pipe is provided on the airbag to connect with the air pipe, which passes through the connecting seat.

[0012] The technical effect of the above improvement is: the connecting seat is used to connect the brake disc assembly and the sliding seat, to squeeze and support the brake disc assembly, and the airbag is injected or discharged to the outside through the air pipe.

[0013] As a further improvement of the above solution, the limiting member is threadedly provided on the sleeve, and a locking pin is further provided between the sleeve and the limiting member.

[0014] The technical effect of the above improvement is: the locking pin limits the installation position of the limiter and the sleeve, preventing the limiter from detaching from the sleeve. Therefore, when the airbag is filled with gas, the airbag can push the sliding seat to move on the sleeve under the obstruction of the limiter.

[0015] As a further improvement of the above solution, a first closed shell and a second closed shell assembled together are provided on the outer sides of the friction disc and brake disc assembly;

[0016] The brake disc assembly includes a mounting seat, on which a first brake disc and a second brake disc are fixedly arranged.

[0017] As a further improvement to the above solution, a slide rod is fixedly provided on the mounting seat, the slide rod is slidably provided in the adjusting sleeve rod, and a threaded sleeve fixed on the second sealing shell is threadedly provided on the adjusting sleeve rod;

[0018] The adjusting sleeve rod is provided with a limiting step and a limiting pin which can limit the movable range of the adjusting sleeve rod, and the limiting pin is plugged into the outer side of the adjusting sleeve rod.

[0019] The technical effect of the above improvement is: by setting the first brake disc and the second brake disc, better friction can be provided. Secondly, in response to some special circumstances, the adjusting sleeve can be rotated to make the threaded sleeve pull the sliding rod outward to reduce the positive pressure between the brake disc assembly and the friction disc, thereby achieving partial unlocking of the brake, thereby reducing the resistance to rotation on the friction disc, ensuring temporary rotation of the main shaft after the air is cut off, that is, the need to move the car in a small range, and avoiding the situation where maintenance is neglected because the brake does not work after unlocking. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 2 for Figure 1 Schematic diagram of the local enlarged structure at A in the middle;

[0022] Figure 3 It is a schematic diagram of the partial cross-sectional structure inside the adjusting sleeve rod.

[0023] In the figure: 10, main shaft; 11, friction disc; 12, brake disc assembly; 121, first brake disc; 122, second brake disc; 123, mounting seat; 13, sleeve; 14, sliding seat; 15, connecting seat; 16, spring; 17, airbag; 18, limit member; 19, air pipe; 20, slide rod; 21, first closing shell; 22, second closing shell; 23, adjusting sleeve; 231, limit step; 24, threaded sleeve; 25, limit pin; 26, locking pin. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution, the present invention is described in detail below in conjunction with the embodiments. The description in this section is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention.

[0025] like Figure 1-3 As shown, the specific scheme of this embodiment is: an air-cut brake structure, including a friction disc 11 fixedly mounted on a main shaft 10, a brake disc assembly 12 movably provided on one side of the friction disc 11 and capable of contacting the friction disc 11, and a first closed shell 21 and a second closed shell 22 assembled together are provided on the outer sides of the friction disc 11 and the brake disc assembly 12, and the first closed shell 21 and the second closed shell 22 are fixedly mounted on the vehicle body;

[0026] A sleeve 13 is rotatably provided on the friction disc 11. The sleeve 13 and the second closed shell 22 are fixed to each other. A sliding seat 14 is slidably provided on the sleeve 13 and fixed to the brake disc assembly 12. Specifically, the sliding seat 14 can only slide on the sleeve 13. A spring 16 is provided between the sliding seat 14 and the sleeve 13 to push the brake disc assembly 12 toward the side of the friction disc 11 and lock the friction disc 11. Under the push of the elastic force of the spring 16, the brake disc assembly 12 can press the friction disc 11, thereby braking the friction disc 11.

[0027] A stopper 18 is fixedly provided on the end of the sleeve 13 near the friction disc 11. An airbag 17 is provided between the stopper 18 and the sliding seat 14 to push the sliding seat 14 to move so that the brake disc assembly 12 and the friction disc 11 fall off. An air pipe 19 is connected to the airbag 17, which is connected to the air supply system of the entire vehicle brake. When the air supply system can provide normal pressure, it will synchronously drive the airbag 17 to swell, thereby pushing the sliding seat 14 to separate the brake disc assembly 12 and the friction disc 11, and not have a braking effect. When the air supply system pressure is insufficient, the airbag 17 cannot push the sliding seat 14. Under the pressure of the spring 16, the brake disc assembly 12 is pressed against the friction disc 11, thereby playing a braking role. Through the above structure, compared with the traditional piston-type air brake, the precision of each component can be significantly reduced, and there is no need to control the sealing. The various components used are more easily available, the use cost can be reduced, and the entire brake structure is simpler, and assembly, disassembly and maintenance are more convenient.

[0028] As a preferred embodiment of the above embodiment, a connecting seat 15 is fixedly provided between the brake disc assembly 12 and the sliding seat 14. The connecting seat 15 is mainly used to connect the brake disc assembly 12 and the sliding seat 14, and supports the brake disc assembly 12, and the air pipe 19 passes through the connecting seat 15; as a further embodiment, at least two air pipes 19 are provided, one of which is connected to the inflation system, and a control valve is connected to the other air pipe 19. The control valve is controlled by PLC, and the control valve is controlled by a pressure signal. That is, when the pressure of the inflation system is lower than the set value, the control valve opens to exhaust, and the control valve closes after the exhaust continues for at least 30s. At this time, the spring 16 squeezes the brake disc assembly 12 to brake.

[0029] As a preferred embodiment of the above embodiment, the limit member 18 is threadedly arranged on the sleeve 13, and a locking pin 26 is also provided between the sleeve 13 and the limit member 18. The locking pin 26 mainly fixes the limit member 18 at the end of the sleeve 13 to provide more stable support for the airbag 17.

[0030] As a preferred embodiment of the above embodiment, the brake disc assembly 12 includes a mounting seat 123, on which a first brake disc 121 and a second brake disc 122 are fixedly mounted. The first brake disc 121 and the second brake disc 122 are made of different materials, wherein the second brake disc 122 is made of a rubber material with high elasticity. A slide rod 20 is fixedly mounted on the mounting seat 123, and the slide rod 20 is slidably mounted in the adjustment sleeve rod 23. Figure 3 The adjusting sleeve 23 is provided with a threaded sleeve 24 fixed on the second closing shell 22, and the adjusting sleeve 23 is provided with a limit step 231 and a limit pin 25 that can limit the range of movement of the adjusting sleeve 23. The limit pin 25 is inserted into the outer side of the adjusting sleeve 23. By turning the end of the adjusting sleeve 23 with a wrench, the adjusting sleeve 23 can be driven to rotate on the threaded sleeve 24, thereby driving the slide bar 20 to move in the direction away from the friction disc 11. After the brake disc assembly 12 and the friction disc 11 contact the brake, the brake is unlocked. Unlocking the brake is mainly used in some special circumstances, such as when the engine cannot be started and cannot be inflated normally, but the vehicle needs to be pulled to move; but for In order to prevent the danger caused by the complete loss of braking effect of the air brake after unlocking, such as the vehicle directly sliding away or the driver forgetting to check the brake system or forget to repair it, the limit step 231 and the limit pin 25 provided in the present application can limit the range of movement of the adjustment sleeve 23. The specific solution principle is that the adjustment sleeve 23 can only move the distance between the limit step 231 and the limit pin 25, so the slide rod 20 can only move a short distance, so the positive pressure of the first brake disc 121 and the second brake disc 122 on the friction disc 11 is reduced, and the friction force is reduced, but the braking effect is not completely lost. Therefore, the safety brought by the brake can still be guaranteed while ensuring normal use.

[0031] It should be noted that, in this article, the terms include, contain or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Specific examples are used herein to illustrate the principles and implementation methods of the technical solution of the present utility model. The above examples are only used to help understand the method of the present utility model and its core idea. The above is only a preferred embodiment of the present utility model. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present utility model, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should all be regarded as the scope of protection of the present utility model.

Claims

1. An air-cut brake structure, characterized in that: The invention comprises a friction disc (11) fixedly mounted on a main shaft (10), and a brake disc assembly (12) movably arranged on one side of the friction disc (11) and capable of contacting the friction disc (11); A sleeve (13) is rotatably provided on the friction disc (11), a sliding seat (14) is slidably provided on the sleeve (13) and is fixedly provided with the brake disc assembly (12), and a spring (16) is provided between the sliding seat (14) and the sleeve (13) to push the brake disc assembly (12) toward one side of the friction disc (11) and lock the friction disc (11); A stopper (18) is fixedly provided on the end portion of the sleeve (13) close to the friction disc (11), and an air bag (17) is provided between the stopper (18) and the sliding seat (14) to push the sliding seat (14) to move so that the brake disc assembly (12) and the friction disc (11) fall off.

2. The air-break brake structure according to claim 1, characterized in that: A connecting seat (15) is fixedly arranged between the brake disc assembly (12) and the sliding seat (14); an air pipe (19) is connected to the air bag (17), and the air pipe (19) passes through the connecting seat (15).

3. The air-break brake structure according to claim 1, characterized in that: The limiting member (18) is threadedly arranged on the sleeve (13), and a locking pin (26) is also arranged between the sleeve (13) and the limiting member (18).

4. The air-break brake structure according to claim 1, characterized in that: A first sealing shell (21) and a second sealing shell (22) that are assembled together are provided on the outer sides of the friction disc (11) and the brake disc assembly (12); The brake disc assembly (12) comprises a mounting seat (123), on which a first brake disc (121) and a second brake disc (122) are fixedly mounted.

5. The air-break brake structure according to claim 4, characterized in that: A slide rod (20) is fixedly provided on the mounting seat (123), and the slide rod (20) is slidably provided in the adjusting sleeve rod (23). A threaded sleeve (24) fixed on the second sealing shell (22) is threadedly provided on the adjusting sleeve rod (23); The regulating sleeve rod (23) is provided with a limiting step (231) and a limiting pin (25) capable of limiting the range of movement of the regulating sleeve rod (23), and the limiting pin (25) is plugged into the outer side of the regulating sleeve rod (23).

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