Single-cylinder floating disc brake for coal mine overhead passenger device braking system

Abstract

The utility model belongs to mine hoisting equipment technical field, specifically disclose a single cylinder floating type disc brake for coal mine overhead passenger device braking system, be equipped with gravity compensation mechanism above the brake body, and gravity compensation mechanism includes pressing plate, upper tension bolt, adjusting nut and spring assembly, and pressing plate is fixedly connected with support body, is equipped with upper tension bolt in the pressing plate top, and upper tension bolt lower end portion passes through pressing plate and brake body in proper order and is connected with upper brake shoe through the connecting block after, be provided with oil cavity between oil cylinder and piston assembly, and one end of piston assembly is connected with one end of connecting plate through lower tension bolt, and the other end of connecting plate is connected with lower brake shoe, through setting up gravity compensation mechanism, offset the influence of self weight to upper brake shoe opening gap value when installing vertically, improve the service life of brake shoe and brake disc, improve equipment operation efficiency and operation reliability, overcome the problem that traditional single cylinder floating type disc brake is affected by gravity and cannot be installed vertically.

Description

Technical Field

[0001] This utility model belongs to the technical field of mine hoisting equipment, and specifically discloses a single-cylinder floating disc brake for the braking system of overhead personnel transport devices in coal mines. Background Technology

[0002] The aerial passenger transport system in coal mines, commonly known as the "monkey car," is widely used in underground coal mines and is one of the preferred equipment for transporting personnel underground.

[0003] The single-cylinder floating disc brake is mounted on a dedicated support structure, forming a complete brake unit. It works in conjunction with a hydraulic station and control system to achieve both working and safety braking functions. When a conventional disc brake is installed vertically, due to gravity, the upper brake shoe contacts the brake disc when not braking. This not only affects the opening operation and fails to meet actual braking needs, but also leads to abnormal wear of the upper brake shoe, affecting the service life of the disc brake. Utility Model Content

[0004] To address the problems in the background art, this utility model discloses a single-cylinder floating disc brake for a braking system of an overhead passenger transport device in a coal mine, including a gravity compensation mechanism to counteract the influence of its own weight on the opening gap value when vertically installed, ensuring long-term operation of the system with the brake open.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: A single-cylinder floating disc brake for use in the braking system of overhead passenger transport devices in coal mines includes a brake body, which can slide up and down relative to a support body. A hydraulic cylinder, a piston assembly, and a disc spring assembly are housed within the brake body. Upper and lower brake shoes are spaced vertically within the brake body and are positioned opposite each other on the upper and lower sides of the brake disc. A gravity compensation mechanism is located above the brake body, comprising a U-shaped pressure plate with its opening facing downwards. The pressure plate is fixedly connected to the support body. An upper tension bolt passes through the top of the pressure plate, and the lower end of the upper tension bolt passes through the pressure plate and the brake body sequentially before connecting to the upper brake shoe via a connecting block. The hydraulic cylinder is threadedly connected to the brake body via an adjusting nut. An oil chamber is provided between the hydraulic cylinder and the piston assembly. One end of the piston assembly is connected to one end of a connecting plate with a cylindrical body via a lower tension bolt, and the other end of the connecting plate is connected to the lower brake shoe.

[0006] Furthermore, the single-cylinder floating disc brake for the braking system of the overhead passenger vehicle in the coal mine has an adjusting nut screwed to the upper end of the upper tensioning bolt, and a spring assembly is provided between the adjusting nut and the pressure plate, with the spring assembly sleeved on the upper tensioning bolt.

[0007] Furthermore, the single-cylinder floating disc brake for the braking system of the overhead passenger vehicle in coal mine has several limiting screws between the pressure plate and the top of the brake body. The lower end of the limiting screw faces the top of the brake body, and the limiting screw is used to limit the maximum upward movement of the brake body relative to the support body. The upper end of the limiting screw passes through the pressure plate and is screwed with a locking nut.

[0008] Furthermore, the single-cylinder floating disc brake used in the braking system of the overhead passenger vehicle in coal mine has a positive pressure sensor installed between the connecting block and the inner wall of the brake body.

[0009] Furthermore, the single-cylinder floating disc brake used in the braking system of the overhead passenger vehicle in coal mine has a displacement sensor installed at the other end of the piston assembly.

[0010] Furthermore, in the single-cylinder floating disc brake used in the braking system of the overhead passenger vehicle in coal mine, the disc spring assembly is located on the outside of the cylinder body of the liner plate with the cylinder body.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This utility model relates to a single-cylinder floating disc brake for a braking system of an overhead passenger transport device in a coal mine. A gravity compensation mechanism is provided above the brake body. This mechanism includes a pressure plate, an upper tension bolt, an adjusting nut, and a spring assembly. By setting up this gravity compensation mechanism, the influence of the brake's own weight on the upper brake shoe opening gap value during vertical installation is offset, ensuring long-term open-circuit operation of the system, improving the service life of the brake shoes and brake disc. The design is simple, stable, reliable, and compact, facilitating installation and maintenance, improving equipment operating efficiency and reliability, and overcoming the problem that traditional single-cylinder floating disc brakes cannot be installed vertically due to gravity. Attached Figure Description

[0012] Figure 1 This is a cross-sectional structural diagram of the single-cylinder floating disc brake of this utility model; In the above diagram: 1-Piston assembly; 2-Adjusting nut; 3-Oil cylinder; 4-Disc spring assembly; 5-Lower brake shoe; 6-Upper brake shoe; 7-Positive pressure sensor; 8-Pressure plate; 9-Limit screw; 10-Spring assembly; 11-Adjusting nut; 12-Upper tension bolt; 13-Displacement sensor; 14-Lower tension bolt; 15-Brake body; 16-Bracket body. Detailed Implementation

[0013] To better understand this utility model, the following embodiments further illustrate the content of this utility model, but the content of this utility model is not limited to the following embodiments.

[0014] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0015] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0016] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0017] Combined with appendix Figure 1 This invention details a single-cylinder floating disc brake for use in the braking system of overhead passenger transport devices in coal mines. The brake body includes a brake body 15, which can slide vertically relative to a support body 16. Within the brake body 15 are a hydraulic cylinder 3, a piston assembly 1, and a disc spring assembly 4. Upper brake shoes 6 and lower brake shoes 5 are spaced vertically within the brake body 15 and are positioned opposite each other on the upper and lower sides of the brake disc. A gravity compensation mechanism is located above the brake body 15. The device includes a U-shaped pressure plate 8 with its opening facing downwards. The pressure plate 8 is fixedly connected to the support body 16. An upper tension bolt 12 is inserted through the top of the pressure plate 8. The lower end of the upper tension bolt 12 passes through the pressure plate 8 and the brake body 15 in sequence and is connected to the upper brake shoe 6 through a connecting block. The oil cylinder 3 is threadedly connected to the brake body 15 through an adjusting nut 2. An oil chamber is provided between the oil cylinder 3 and the piston assembly 1. One end of the piston assembly 1 is connected to one end of the connecting plate with a cylinder through a lower tension bolt 14. The other end of the connecting plate is connected to the lower brake shoe 5.

[0018] As an optional design, the preferred single-cylinder floating disc brake for the braking system of the overhead passenger vehicle in coal mine has an adjusting nut 11 screwed onto the upper end of the upper tension bolt 12. A spring assembly 10 is provided between the adjusting nut 11 and the pressure plate 8. The spring assembly 10 is sleeved on the upper tension bolt 12. By adjusting the adjusting nut 11, the preload of the spring assembly 10 can be adjusted, thereby generating an upward preload to counteract the influence of the brake body's own weight when vertically installed. With the help of this preload, the upper brake shoe 6 can overcome gravity and effectively counteract the influence of the upper brake shoe 6's own weight on the opening gap when vertically installed.

[0019] As an optional design, the preferred single-cylinder floating disc brake for the braking system of the overhead passenger vehicle in coal mine has several limiting screws 9 between the pressure plate 8 and the top of the brake body 15. The lower end of the limiting screw 9 faces the top of the brake body 15, and the upper end of the limiting screw 9 passes through the pressure plate 8 and is screwed with a locking nut. Through the limiting screw 9 and the locking nut, the limiting screw 9 is used to limit the maximum upward movement of the brake body 15 relative to the support body. When the brake body 15 slides to the uppermost position relative to the support body 16, the lower end of the limiting screw 9 abuts against the top of the brake body 15 to limit the further upward movement of the brake body 15, locking the brake body 15 relative to the pressure plate 8. By adjusting the extension of the limiting screw 9, the gap value between the upper brake shoe 6 and the brake disc can be adjusted.

[0020] As an optional design, the preferred single-cylinder floating disc brake for the braking system of the overhead passenger vehicle in coal mine has a positive pressure sensor 7 installed between the connecting block and the inner wall of the brake body 15.

[0021] As an optional design, the preferred single-cylinder floating disc brake for the braking system of the overhead passenger vehicle in coal mine has a displacement sensor 13 at the other end of the piston assembly 1. The displacement sensor 13 measures the gap between the lower brake shoe 5 and the upper brake shoe 6 and the brake disc after the brake is opened.

[0022] As an optional design, the preferred single-cylinder floating disc brake for the braking system of the overhead passenger vehicle in coal mine has the disc spring assembly 4 located on the outside of the cylinder with a liner plate.

[0023] The working process of this utility model is as follows: When the brake is closed, the upper brake shoe 6 and the lower brake shoe 5 of the brake contact the brake disc under the action of the spring force stored in the disc spring assembly 4 and provide the positive pressure required for closing the brake. When the control system issues the "open brake" command, the hydraulic system begins to supply oil to the brake and raises the oil pressure to the preset opening pressure value. The hydraulic oil enters the closed oil chamber composed of the cylinder 3 and the piston assembly 1. The pressurized oil acts on the piston assembly 1, and the piston assembly 1 moves downward. Through the transmission of the lower tension bolt 14, it drives the lower brake shoe 5 to move downward, so that the lower brake shoe 5 disengages from the brake disc and forms a gap. At the same time, the disc spring assembly 4 is further compressed. At this time, the positive pressure between the lower brake shoe 5 and the brake disc disappears. Under the combined action of the reaction force, the spring assembly 10 and the upper tension bolt 12, the brake body 15 floats upward relative to the bracket body 16. During this process, the upper brake shoe 6 moves upward and disengages from the brake disc until the top of the brake body 15 is in tight contact with the limit screw 9. Finally, both the upper and lower brake shoes of the brake have a certain gap with the brake disc, and the opening action is completed. When the control system issues the "close" command, the hydraulic system is unloaded and depressurized. Due to the spring force stored in the disc spring assembly 4, the lower brake shoe 5 will move upward to contact the brake disc and form positive pressure. This positive pressure acts on the entire brake, causing the brake body 15 to float downward relative to the bracket body 16, which in turn causes the upper brake shoe 6 to move downward and contact the brake disc to form positive pressure. Finally, both the upper and lower brake shoes of the brake contact the brake disc and form the positive pressure required for braking, and the closing action is completed.

[0024] The above description is only an application implementation of this utility model, but the protection scope of this utility model is not limited thereto and cannot be used to limit the scope of rights of this utility model. Any equivalent changes made according to the technical solution of this utility model should be included within the protection scope of this utility model.

Claims

1. A single-cylinder floating disc brake for use in the braking system of overhead passenger transport devices in coal mines, comprising a brake body, the brake body including a brake sleeve, the brake sleeve being able to slide up and down relative to a support body, and a hydraulic cylinder, piston assembly, and disc spring assembly disposed within the brake sleeve, characterized in that: The brake body has upper and lower brake shoes spaced apart vertically. The upper and lower brake shoes are positioned opposite each other on the upper and lower sides of the brake disc. A gravity compensation mechanism is provided above the brake body. The gravity compensation mechanism includes a U-shaped pressure plate with its opening facing downwards. The pressure plate is fixedly connected to the support body. An upper tension bolt passes through the top of the pressure plate. The lower end of the upper tension bolt passes through the pressure plate and the brake body in sequence and is connected to the upper brake shoe through a connecting block. The hydraulic cylinder is threadedly connected to the brake body through an adjusting nut. An oil chamber is provided between the hydraulic cylinder and the piston assembly. One end of the piston assembly is connected to one end of a connecting plate with a cylinder through a lower tension bolt. The other end of the connecting plate is connected to the lower brake shoe.

2. The single-cylinder floating disc brake for the braking system of an overhead passenger vehicle in a coal mine according to claim 1, characterized in that: An adjusting nut is screwed to the upper end of the upper tensioning bolt. A spring assembly is provided between the adjusting nut and the pressure plate, and the spring assembly is sleeved on the upper tensioning bolt.

3. The single-cylinder floating disc brake for the braking system of an overhead passenger transport device in a coal mine according to claim 2, characterized in that: Several limiting screws are provided between the pressure plate and the top of the brake body. The lower end of the limiting screw faces the top of the brake body. The limiting screw is used to limit the maximum upward movement of the brake body relative to the support body. The upper end of the limiting screw passes through the pressure plate and is screwed with a locking nut.

4. The single-cylinder floating disc brake for the braking system of an overhead passenger vehicle in a coal mine, as described in claim 3, is characterized in that: A positive pressure sensor is installed between the connecting block and the inner wall of the brake body.

5. The single-cylinder floating disc brake for the braking system of an overhead passenger vehicle in a coal mine according to claim 3, characterized in that: A displacement sensor is installed at the other end of the piston assembly.

6. The single-cylinder floating disc brake for the braking system of an overhead passenger vehicle in a coal mine according to claim 3, characterized in that: The disc spring assembly is located on the outside of the cylinder with a liner.

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