A crane rigid anti-swing hoisting mechanism

Abstract

A crane rigid anti-swing lifting mechanism is provided to solve the problems of high cost and poor anti-swing effect, which comprises a lifting trolley, a winding drum is installed on the left and right sides of the lifting trolley, the winding drum is wound with a first steel wire rope and a second steel wire rope, a sleeve is fixed at the lower end of the lifting trolley, a rigid guide column is slidably connected in the sleeve, a lifting tool is fixed at the lower end of the rigid guide column, a first pulley block and a second pulley block are fixed on the lifting tool, a first lock and a second lock are fixed on one side of the winding drum on the lifting trolley, the first steel wire rope is fixedly connected with the first lock through the first pulley block, the second steel wire rope is fixedly connected with the second lock through the second pulley block, a first limiting ring is coaxially fixed on the upper end of the rigid guide column, a plurality of limiting blocks are uniformly fixed on the circumference of the sleeve and inserted into the sleeve, the limiting blocks correspond to the first limiting ring in the up-down direction, a plurality of mounting frames are uniformly fixed on the circumference of the sleeve, rollers located in the sleeve are rotatably connected on the mounting frames, and the rollers are rollingly connected with the rigid guide column.

Description

Technical Field

[0001] This utility model belongs to the field of crane technology, and in particular relates to a rigid anti-sway lifting mechanism for cranes. Background Technology

[0002] Crane anti-sway technology is an active, control system-based technique that actively suppresses or eliminates the swaying of the load (hook and load) by controlling the acceleration and deceleration of the crane trolley (or main trolley). Currently common crane anti-sway technologies include electronic anti-sway systems and flexible damping. Electronic anti-sway systems rely on sensors, controllers, and algorithms, making them complex and costly to manufacture and maintain. Flexible damping cannot fundamentally eliminate the inherent swaying caused by flexible components such as wire ropes, and its effectiveness may deteriorate under conditions of strong winds or severe shaking. Utility Model Content

[0003] In view of the above situation and to overcome the defects of the prior art, the purpose of this utility model is to provide a rigid anti-sway lifting mechanism for cranes, so as to solve the problems of high cost and poor anti-sway effect.

[0004] The technical solution to the technical problem is as follows: A lifting trolley is included, with drums installed on both sides of the trolley. A first wire rope and a second wire rope are wound on the drums. A sleeve corresponding to the drum is fixed to the lower end of the lifting trolley. A rigid guide post is slidably connected inside the sleeve. A lifting device is fixed to the lower end of the rigid guide post. A first pulley block and a second pulley block are fixed on the lifting device. The rigid guide post is located between the first pulley block and the second pulley block. A first lock and a second lock are fixed on one side of the drum on the lifting trolley. The first wire rope is fixedly connected to the first lock via the first pulley block, and the second wire rope is fixedly connected to the second lock via the second pulley block. A first limiting ring is coaxially fixed to the upper end of the rigid guide post. Multiple limiting blocks inserted into the sleeve are evenly fixed around the circumference of the sleeve, corresponding vertically to the first limiting ring. Multiple mounting brackets are evenly fixed around the circumference of the sleeve, with rollers rotatably connected to the mounting brackets inside the sleeve. The rollers are tumblingly connected to the rigid guide post and are located below the limiting blocks.

[0005] Preferably, a second limiting ring is coaxially fixed at the lower end of the sleeve, and the rigid guide post is fixedly connected to the lifting device via a flange. The second limiting ring limits the upward movement of the flange.

[0006] Preferably, the crane trolley is equipped with a motor, which is connected to the drum via a reducer.

[0007] This invention has the following advantages over traditional equipment: it combines a sleeve with a rigid guide column, resulting in a stable structure. Multiple rollers not only clamp and limit the rigid guide column but also reduce friction, ensuring the stability of the rigid guide column sliding up and down within the sleeve. This improves the overall stability of the rigid guide column and the lifting device, providing excellent anti-swaying effect. Furthermore, it is a rigid anti-sway device with a simple structure, low cost, and the ability to fundamentally suppress load swaying from a mechanical perspective. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the front view of this utility model; Figure 2 This is a schematic diagram of the top view of this utility model; Figure 3 This is a schematic diagram of the left view of this utility model; Figure 4 yes Figure 1 A magnified schematic diagram of part A in the diagram.

[0009] Reference numerals in the attached drawings: 1. Crane trolley; 2. Drum; 3. First wire rope; 4. Second wire rope; 5. Sleeve; 6. Rigid guide post; 7. Lifting device; 8. First pulley block; 9. Second pulley block; 10. First locking buckle; 11. Second locking buckle; 12. First limiting ring; 13. Limiting block; 14. Mounting bracket; 15. Roller; 16. Second limiting ring; 17. Flange; 18. Motor. Detailed Implementation

[0010] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0011] Depend on Figures 1 to 4 Provided is a rigid anti-sway lifting mechanism for a crane, comprising a crane trolley 1, with drums 2 installed on both the left and right sides of the crane trolley 1. A first wire rope 3 and a second wire rope 4 are wound on the drums 2. A sleeve 5 corresponding to the drums 2 is fixed to the lower end of the crane trolley 1. A rigid guide post 6 is slidably connected vertically within the sleeve 5. A lifting device 7 is fixed to the lower end of the rigid guide post 6. A first pulley block 8 and a second pulley block 9 are fixed on the lifting device 7. The rigid guide post 6 is located between the first pulley block 8 and the second pulley block 9. A first locking buckle 10 and a second locking buckle are fixed on one side of the drums 2. 11. The first wire rope 3 is fixedly connected to the first lock 10 via the first pulley group 8, and the second wire rope 4 is fixedly connected to the second lock 11 via the second pulley group 9. The upper end of the rigid guide post 6 is coaxially fixed with a first limiting ring 12. Multiple limiting blocks 13 inserted into the sleeve 5 are evenly fixed around the circumference of the sleeve 5. The limiting blocks 13 correspond vertically to the first limiting ring 12. Multiple mounting brackets 14 are evenly fixed around the circumference of the sleeve 5. Rollers 15 located inside the sleeve 5 are rotatably connected to the mounting brackets 14. The rollers 15 are rotatably connected to the rigid guide post 6. The rollers 15 are located below the limiting blocks 13.

[0012] The lower end of the sleeve 5 is coaxially fixed with a second limiting ring 16. The rigid guide post 6 and the lifting device 7 are fixedly connected via a flange 17. The second limiting ring 16 limits the upward movement of the flange 17.

[0013] The crane trolley 1 is equipped with a motor 18, which is connected to the drum 2 via a reducer.

[0014] In use, the crane trolley 1 is equipped with a trolley traveling mechanism (the trolley traveling mechanism is existing technology; it is the core mechanical device for the crane to achieve horizontal transport function, consisting of a motor, reducer, brake, coupling, wheels, and angular bearing housing, etc. Its structural design adopts a modular concept, and the torque distribution and maintenance convenience can be optimized through a centrally or side-mounted reducer layout). The trolley traveling mechanism is activated, and the crane trolley 1 moves to a suitable position. The motor 18 is then activated, and the motor 18 drives the drum 2 to rotate via the reducer. The drum 2 simultaneously releases the first wire rope 3 and the second wire rope 4. The first wire rope 3 is fixedly connected to the first locking buckle 10 via the first pulley block 8, and the second wire rope 4 is fixedly connected to the second locking buckle 11 via the second pulley block 9. The rigid guide post 6 is located between the first pulley block 8 and the second pulley block 9, raising the rigid guide post 6 and... The stability of the lifting motion of the lifting device 7 is ensured by the downward movement of the lifting device 7 and the rigid guide column 6 under their own weight. As the rigid guide column 6 moves downward within the sleeve 5, multiple mounting brackets 14 are evenly fixed around the circumference of the sleeve 5. Rollers 15, which are rotatably connected to the mounting brackets 14 and rolledly connected to the rigid guide column 6, not only clamp and limit the rigid guide column 6, but also reduce friction, ensuring the stability of the rigid guide column 6 sliding up and down within the sleeve 5 and preventing the lifting device 7 from swaying. This provides a good anti-sway effect. During the downward movement of the rigid guide column 6 within the sleeve 5, when the first limiting ring 12 moves downward to the limiting block 13, the limiting block 13 provides limiting support for the rigid guide column 6. At this time, the rigid guide column 6 and the lifting device 7 move downward to their extreme positions, effectively preventing the rigid guide column 6 from falling out of the sleeve 5 and improving safety. When materials need to be lifted, the drum 2 simultaneously retracts the first wire rope 3 and the second wire rope 4. The first wire rope 3 and the second wire rope 4 simultaneously drive the lifting device 7 to move upward. The rigid guide column 6 moves upward inside the sleeve 5. When the flange 17 contacts the second limit ring 16, the rigid guide column 6 and the lifting device 7 move upward to the limit position. The operation is simple, safe and stable.

[0015] This embodiment does not impose any limitation on the shape, material, structure, etc. of this utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. A rigid anti-sway lifting mechanism for a crane, comprising a lifting trolley (1), characterized in that, The crane trolley (1) is equipped with drums (2) on both the left and right sides. The drums (2) are wound with a first wire rope (3) and a second wire rope (4). The lower end of the crane trolley (1) is fixed with a sleeve (5) corresponding to the drum (2). A rigid guide post (6) is slidably connected inside the sleeve (5). A lifting device (7) is fixed at the lower end of the rigid guide post (6). A first pulley block (8) and a second pulley block (9) are fixed on the lifting device (7). The rigid guide post (6) is located between the first pulley block (8) and the second pulley block (9). The crane trolley (1) is fixed with a first lock (10) and a second lock (11) located on one side of the drum (2). The first wire rope (3) passes through the first... A pulley block (8) is fixedly connected to the first lock (10), and the second steel wire rope (4) is fixedly connected to the second lock (11) via the second pulley block (9). The upper end of the rigid guide post (6) is coaxially fixed with a first limiting ring (12). Multiple limiting blocks (13) inserted into the sleeve (5) are evenly fixed around the circumference of the sleeve (5). The limiting blocks (13) correspond to the first limiting ring (12) vertically. Multiple mounting brackets (14) are evenly fixed around the circumference of the sleeve (5). A roller (15) located inside the sleeve (5) is rotatably connected to the mounting bracket (14). The roller (15) is rotatably connected to the rigid guide post (6). The roller (15) is located below the limiting block (13).

2. The rigid anti-sway lifting mechanism for a crane according to claim 1, characterized in that, The lower end of the sleeve (5) is coaxially fixed with a second limiting ring (16), and the rigid guide column (6) and the lifting device (7) are fixedly connected via a flange (17). The second limiting ring (16) limits the upward movement of the flange (17).

3. A rigid anti-sway lifting mechanism for a crane according to claim 1, characterized in that, The crane trolley (1) is equipped with a motor (18), which is connected to the drum (2) via a reducer.

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