Special cantilever lifting appliance
By adjusting the counterweight position in the cantilever spreader and using the torque balance principle, the problem of torque imbalance on both sides of the lifting point in the prior art is solved, the smooth lifting of items and the safety of operators are achieved, and the operation efficiency is improved.
Patent Information
- Application Number
- CN202421588343.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-07
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-07-07
AI Technical Summary
During the lifting process, it is difficult to achieve moment balance between the two sides of the lifting point, resulting in unstable objects being lifted and prone to problems of space crossing and human-machine contact.
A special cantilever spreader is designed to adjust the counterweight position and use the torque balance principle to realize the translation of the lifting point, avoid the crossing of equipment in the vertical direction, and ensure that the operator maintains a safe distance from the lifted items.
The smooth lifting of objects to be lifted is achieved, avoiding space crossing and human-machine contact, improving operational efficiency, and reducing risks during the lifting process.
Smart Images
Figure CN222512756U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a special cantilever hanger. Background Art
[0002] Cantilever spreader is a kind of lifting equipment widely used in industrial production. Its main function is to carry and lift materials in vertical and horizontal directions. According to its structural characteristics and functions, cantilever spreader can be divided into many types, such as manual cantilever spreader, electric cantilever spreader, single-beam cantilever spreader, double-beam cantilever spreader, etc. In practical application, cantilever spreader transfers the weight of the goods on the hook to the cantilever beam through transmission devices such as lifting chains and electric hoists, thereby realizing the lifting of goods. Summary of the invention
[0003] The utility model aims to provide a special cantilever sling, which can achieve moment balance on both sides of the lifting point by adjusting the counterweight position, so that the lifted objects can be balanced by the lifting beam to avoid spatial intersection, thereby achieving the purpose of stable lifting.
[0004] The technical solution adopted by the utility model is a special cantilever sling, including a hanging beam main body, a working hook is arranged at one end of the hanging beam main body, an adjusting hand wheel is arranged at the other end of the hanging beam main body, a lifting beam is vertically fixedly arranged on the hanging beam main body close to the adjusting hand wheel, a lifting ring is arranged at the top of the lifting beam, a driven sprocket is arranged on the hanging beam main body below the lifting ring, a counterweight positioning block is slidingly arranged on the hanging beam main body between the adjusting hand wheel and the driven sprocket, a transmission chain is arranged between the adjusting hand wheel and the driven sprocket, the counterweight positioning block is connected to the transmission chain, and the adjusting hand wheel is rotated to drive the counterweight positioning block to move back and forth horizontally.
[0005] This sling is different from conventional cantilever slings. It does not have a lifting fulcrum, and is not designed with any support on the plane. The crane's lifting point is used as the fulcrum. The direction of the force is upward, and the direction of the force of the hoisted object is downward. The principle of action and reaction is used to adjust the torque to achieve the balance of the entire lifting, and the lifting operation is achieved by relying on the principle of torque balance. After the crane's lifting ring is firmly hung, a trial lift is performed. The adjusting handwheel is adjusted to move the counterweight toward the lifting point so that the cantilever sling has a balanced system under no-load. After the entire mechanism is lifted smoothly, the lifting beam is operated to move the working hook to the top of the guide guard, the guide guard is tied, and the handwheel is adjusted to move the counterweight to the position corresponding to the rough rolling guide guard. The adjusting handwheel is locked, and the crane is slowly lifted for a trial lift. The operator operates the lifting beam at the end of the counterweight to make the guide guard detach from the machine body and lift it out smoothly. The entire guide and guard disassembly operation was successfully completed. During the entire process, the personnel maintained a safe distance from the hoisted guide and guard. In addition, through the balancing torque of the lifting beam, the lifting machinery was kept away from the reducer of the vertical rolling mill, and the space was optimized to avoid hooking and wearing the reducer during hoisting. The relevant requirements for the intrinsic safety of the equipment were met.
[0006] The utility model realizes the safe lifting of vertically distributed equipment. The principle of moment balance is reasonably used to translate the lifting point. The vertical equipment crossing is avoided, and the human-machine contact during the operation is avoided. Manual pushing is avoided during the whole process, and stable lifting is achieved, and the operation efficiency is improved. Due to the simple structure, convenient maintenance and large load-bearing capacity, it is suitable for the lifting operation of equipment distributed in the vertical direction. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 It is a schematic diagram of the main structure of the utility model. DETAILED DESCRIPTION
[0008] A special cantilever sling, such as Figure 1 As shown, it includes a beam body 5, a working hook 6 is provided at one end of the beam body 5, an adjusting handwheel 1 with a driving sprocket 13 is provided at the other end of the beam body 5, a lifting beam 4 is vertically fixedly provided on the beam body near the adjusting handwheel 1, a lifting ring 9 is provided at the top of the lifting beam, a driven sprocket 8 is provided on the beam body below the lifting ring 9, a counterweight positioning block 12 is slidingly provided on the beam body between the adjusting handwheel 1 and the driven sprocket 8, a transmission chain 11 is provided between the adjusting handwheel 1 and the driven sprocket 8, the counterweight positioning block 12 is connected to the transmission chain 11, and rotating the adjusting handwheel 1 drives the counterweight positioning block 12 to move horizontally back and forth.
Claims
1. A special cantilever hanger, comprising a hanging beam body, characterized in that: A working hook is arranged at one end of the hanging beam body, and an adjusting handwheel is arranged at the other end of the hanging beam body. A lifting beam is vertically fixedly arranged on the hanging beam body near the adjusting handwheel, a lifting ring is arranged at the top of the lifting beam, and a driven sprocket is arranged on the hanging beam body below the lifting ring. A counterweight positioning block is slidingly arranged on the hanging beam body between the adjusting handwheel and the driven sprocket, and a transmission chain is arranged between the adjusting handwheel and the driven sprocket. The counterweight positioning block is connected to the transmission chain, and the adjusting handwheel is rotated to drive the counterweight positioning block to move horizontally back and forth.