Driving structure of a pneumatic monorail crane

Abstract

The utility model discloses a kind of driving structure of pneumatic monorail crane, include track, drive frame, rack, driving component and brake component, wherein, track both sides are equipped with sliding groove, top surface fixed rack, support roller on drive frame is embedded in sliding groove, in addition, each group of rack is equipped with a set of driving component, including pneumatic motor, speed reducer, worm worm wheel and walking gear, pneumatic motor power is transmitted to worm through speed reducer, worm drives worm wheel, worm wheel drives walking gear and rack meshing, realizes rack linear motion, brake component contains brake cylinder, brake shoe and spring, cylinder pushes brake arm to make brake shoe clamping tight track brake, spring reset releases brake, enhance safety and stability, the design combines gear rack antiskid, self-locking anti-falling and double brake, suitable for high stability requirement crane scene.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic monorail crane technology, specifically a drive structure for a pneumatic monorail crane. Background Technology

[0002] A pneumatic monorail crane is a lifting and transporting device powered by compressed air. It is widely used in environments such as mines, tunnels, and workshops, and is particularly suitable for harsh conditions such as flammable, explosive, or high-humidity environments. Currently, the main driving methods for monorail cranes include friction wheel drives. For example, the four-wheel drive device for a pneumatic monorail crane disclosed in publication number CN 219821411U utilizes the friction between the drive wheels and the track for propulsion. However, the above structure has the following drawbacks:

[0003] 1. The driving force of the friction wheel (drive wheel) directly depends on the friction coefficient between it and the track. However, in actual working conditions, the friction coefficient of the track surface may be reduced due to oil stains, water stains, dust or wear, causing the friction wheel to slip. Especially when the load is large or during start / brake, the risk of slippage is higher, which seriously affects the positioning accuracy and operating efficiency of the crane.

[0004] 2. To ensure sufficient friction, the friction wheel usually requires a large clamping force, which will lead to accelerated wear on the contact surface between the track and the friction wheel, shortening its service life. At the same time, the clamping mechanism (spring tensioning device) needs to be adjusted frequently, resulting in high maintenance costs.

[0005] 3. Existing drives typically rely on additional brakes to stop, but in cases of insufficient air pressure or sudden loss of pressure, existing braking mechanisms cannot achieve braking quickly, reducing safety. Utility Model Content

[0006] In view of the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide a pneumatic monorail crane drive structure with stable drive and excellent safety.

[0007] The technical solution adopted by this utility model to achieve the above objectives is: a drive structure for a pneumatic monorail crane, including a track, a drive frame, a rack, a drive component, and a braking component. The drive component includes a pneumatic motor, a reducer, a worm gear, a worm wheel, and a traveling gear. The track is provided with a sliding groove, and the rack is fixedly connected to the track.

[0008] A support roller is rotatably connected to the drive frame, the support roller is located in the sliding groove, a rotating shaft is rotatably connected to the drive frame, a traveling gear is fixedly connected to the rotating shaft, the traveling gear meshes with the rack, a worm wheel is fixedly connected to the rotating shaft, and a worm is rotatably connected to the drive frame, the worm meshes with the worm wheel.

[0009] The pneumatic motor and the reducer are fixedly connected to the drive frame. The pneumatic motor is powered by the reducer, and the reducer is powered by the worm gear.

[0010] The braking component is also provided on the drive frame.

[0011] In the above technical solution, the track adopts an I-shaped track, and both sides of the track are provided with recessed areas. The sliding groove is provided on the track at the bottom of the recessed area.

[0012] In the above technical solution, the rack is fixedly connected to the top surface of the track, and two sets of racks are used. The drive frame is equipped with the drive component for each set of racks.

[0013] In the above technical solution, a lubrication box is fixedly connected to the drive frame, the worm and worm wheel are located inside the lubrication box, the lubrication box contains lubricating oil, and an oil injection nozzle is fixedly connected to the lubrication box.

[0014] In the above technical solution, the braking component includes a brake cylinder, a brake shoe, a brake arm, and a spring. Two sets of brake arms are rotatably connected to the drive frame. The brake shoe is fixedly connected to the end of each set of brake arms. A spring is fixedly connected to each set of brake arms on the drive frame. The end of the spring is fixedly connected to the brake arm. A brake cylinder is provided between the two sets of brake arms. The end of the brake cylinder is rotatably connected to one set of brake arms, and the tail of the brake cylinder is rotatably connected to the other set of brake arms.

[0015] The beneficial effects of this utility model are as follows: When the pneumatic motor is working, it can drive the worm to rotate through the reducer. Then, the worm drives the worm wheel, causing the traveling gear to rotate. In this way, with the cooperation of the traveling gear and the rack, the drive frame can move linearly along the guide rail, thereby providing driving force for the pneumatic monorail crane. The use of gear and rack can prevent the pneumatic crane from slipping, improving the crane's movement stability. Moreover, the self-locking effect of the worm and worm wheel can lock when the pneumatic motor power is insufficient, preventing the crane from sliding down and improving safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a structural schematic diagram of the present invention from another angle;

[0018] Figure 3 This is a front view structural diagram of the present utility model.

[0019] In the diagram: 100 track, 101 recessed area, 102 sliding groove, 200 drive frame, 201 support roller, 300 rack, 401 pneumatic motor, 402 reducer, 403 worm gear, 404 worm wheel, 405 traveling gear, 406 rotating shaft, 407 lubrication box, 501 brake cylinder, 502 brake shoe, 503 brake arm, 504 spring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-3 A drive structure for a pneumatic monorail crane includes a rail 100, a drive frame 200, a rack 300, a drive component, and a braking component. The drive component includes a pneumatic motor 401, a reducer 402, a worm gear 403, a worm wheel 404, and a traveling gear 405. First, the rail 100 adopts an I-shaped rail, and both sides of the rail 100 are provided with recessed areas 101. A sliding groove 102 is provided at the bottom of the recessed area 101 on the rail 100, and two sets of racks 300 are fixedly connected to the top surface of the rail 100.

[0022] A support roller 201 is rotatably connected to the drive frame 200, and the support roller 201 is located in the sliding groove 102;

[0023] Furthermore, each rack 300 is equipped with a drive component on the drive frame 200. Specifically, a rotating shaft 406 is rotatably connected to the drive frame 200, and a traveling gear 405 is fixedly connected to the rotating shaft 406. The traveling gear 405 meshes with the rack 300. In addition, a worm gear 404 is fixedly connected to the rotating shaft 406, and a worm 403 is rotatably connected to the drive frame 200. The worm 403 meshes with the worm gear 404.

[0024] Furthermore, each set of drive components on the drive frame 200 is fixedly connected to a pneumatic motor 401 and a reducer 402. The pneumatic motor 401 is powered by the reducer 402, and the reducer 402 is powered by the worm gear 403. When the pneumatic motor 401 is working, it can transmit power to the reducer 402, and then to the worm gear 403. The worm gear 403 drives the worm wheel 404 to rotate. With the cooperation of the traveling gear 405 and the rack 300, the drive frame 200 can move linearly along the guide rail, thereby providing driving force for the pneumatic monorail crane. The cooperation of the gear and rack 300 can prevent the pneumatic crane from slipping, improve the crane's movement stability, and utilize the self-locking effect of the worm gear 403 and the worm wheel 404 to lock when the pneumatic motor 401 is not powerful enough, preventing the crane from sliding down and improving safety.

[0025] Furthermore, a lubrication box 407 is fixedly connected to the drive frame 200. The worm 403 and worm wheel 404 are located inside the lubrication box 407. The lubrication box 407 contains lubricating oil, and an oil injection nozzle is fixedly connected to the lubrication box 407. In this way, the lubricating oil can lubricate the worm 403 and worm wheel 404, thereby reducing the coefficient of friction, reducing tooth surface wear, extending the service life of parts, and preventing external dust from entering.

[0026] Furthermore, a braking component is also provided on the drive frame 200. The braking component includes a brake cylinder 501, brake shoes 502, brake arms 503, and springs 504. Specifically, a set of brake arms 503 is rotatably connected to both sides of the track 100 on the drive frame 200. Each set of brake arms 503 has a brake shoe 502 fixedly connected to its end. A spring 504 is fixedly connected to each set of brake arms 503 on the drive frame 200, with its end fixedly connected to the brake arm 503. A brake cylinder 501 is located between the two sets of brake arms 503. The end of the brake cylinder 501 rotates... The brake cylinder 501 is rotatably connected to one set of brake arms 503, and the tail of the brake cylinder 501 is rotatably connected to another set of brake arms 503. In this way, the brake cylinder 501 can drive the two sets of brake arms 503 to rotate, stretching the spring 504, thereby causing the brake shoe 502 to abut against the surface of the track 100 to achieve the braking effect. When the brake cylinder 501 releases the brake, the elastic force of the spring 504 is used to move the brake shoe 502 away from the track 100 to release the brake. This braking component can achieve the braking effect when braking is needed, reduce the force on the self-locking brake of the worm gear 403 and worm wheel 404, and improve stable braking.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A drive structure for a pneumatic monorail crane, comprising a rail (100), a drive frame (200), a rack (300), a drive component, and a braking component, wherein the drive component comprises a pneumatic motor (401), a reducer (402), a worm gear (403), a worm wheel (404), and a traveling gear (405), characterized in that: The track (100) is provided with a sliding groove (102), and the rack (300) is fixedly connected to the track (100); A support roller (201) is rotatably connected to the drive frame (200), the support roller (201) is located in the sliding groove (102), a rotating shaft (406) is rotatably connected to the drive frame (200), a traveling gear (405) is fixedly connected to the rotating shaft (406), the traveling gear (405) meshes with the rack (300), a worm gear (404) is fixedly connected to the rotating shaft (406), and a worm (403) is rotatably connected to the drive frame (200), the worm (403) meshes with the worm gear (404); The pneumatic motor (401) and the reducer (402) are fixedly connected to the drive frame (200). The pneumatic motor (401) is powered to the reducer (402), and the reducer (402) is powered to the worm gear (403). The braking component is also provided on the drive frame (200).

2. The drive structure of a pneumatic monorail crane according to claim 1, characterized in that: The track (100) adopts an I-shaped track, and recessed areas (101) are provided on both sides of the track (100). The sliding groove (102) is provided on the track (100) at the bottom of the recessed area (101).

3. The drive structure of a pneumatic monorail crane according to claim 2, characterized in that: The rack (300) is fixedly connected to the top surface of the track (100). There are two sets of racks (300). The drive frame (200) is equipped with the drive component for each set of racks (300).

4. The drive structure of a pneumatic monorail crane according to claim 3, characterized in that: A lubrication box (407) is fixedly connected to the drive frame (200). The worm (403) and worm wheel (404) are located inside the lubrication box (407). The lubrication box (407) contains lubricating oil, and an oil injection nozzle is fixedly connected to the lubrication box (407).

5. The drive structure of a pneumatic monorail crane according to claim 1, characterized in that: The braking components include a brake cylinder (501), a brake shoe (502), a brake arm (503), and a spring (504). Two sets of brake arms (503) are rotatably connected to the drive frame (200). The brake shoe (502) is fixedly connected to the end of each set of brake arms (503). The spring (504) is fixedly connected to each set of brake arms (503) on the drive frame (200). The end of the spring (504) is fixedly connected to the brake arm (503). The brake cylinder (501) is provided between the two sets of brake arms (503). The end of the brake cylinder (501) is rotatably connected to one set of brake arms (503), and the tail of the brake cylinder (501) is rotatably connected to the other set of brake arms (503).

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