Safe self-locking swivel controls for lifting equipment

Abstract

The invention relates to a rotation control device capable of realizing safe self-locking for hoisting equipment. The device comprises a fixed outer ring, an inner side of the fixed outer ring is provided with a driven ring on which an internal gear is fixed, an inner side of the internal gear is provided with a driving gear, and multiple planet gears which are meshed with the internal gear and the driving gear are arranged between the internal gear and the driving gear; an outer edge surface of the driven ring is provided with multiple wedge-shaped grooves in which rollers are arranged, the rollers are provided with connecting rods, and two ends of the connecting rods are respectively hinged with the rollers and the planet gears; the wedge-shaped grooves are internally provided with grooves in which thrust springs which are in contact with the rollers are arranged; the driving gear is provided with an input shaft which is coaxial with the driving gear in arrangement, and the driven ring is provided with an output shaft which is coaxial with the driven ring in arrangement. According to the device, the structure is ingenious, the safe self-locking is realized through roller clamping, the reverse unlocking process is smooth and stable, the operation is simple, and the use safety is high.

Description

technical field [0001] The invention relates to the field of hoisting equipment, in particular to a safe self-locking rotation control device for the hoisting equipment. Background technique [0002] During the working process of lifting equipment, in order to prevent heavy objects from falling accidentally due to their gravity, a reverse self-locking device is usually installed on the lifting equipment, especially hand hoists, chain hoists, hoists, etc. Some light lifting equipment without its own power device, and because this type of equipment mainly relies on manpower to complete the operation, it is particularly important to protect the safety of the operator. At present, most of this type of equipment is equipped with reverse self-locking devices, but these self-locking devices are mostly primitive control structures, such as self-locking springs or ratchet pawls. This structure is not only unreliable, but also inconvenient to operate, such as The commonly used ratche...

AI Technical Summary

Problems solved by technology

At present, most of this type of equipment is equipped with reverse self-locking devices, but these self-locking devices are mostly primitive control structures, such as self-locking springs or ratchet pawls, etc. This structure is not only unreliable, but also inconvenient to operate, such as The commonly used ratchet and pawl structure needs to be shifted to complete self-locking or unlocking. Once it is misoperated, it may cause a major safety accident; although the self-locking spring can realize self-locking and unlocking without additional operations. Unlocking, but it is prone to slipping when working under heavy loads, and there are also major safety hazards

[0003] In addition, for some existing devices that can realize reverse automatic unlocking, most of the wedges or rollers are directly pulled out or pushed out of the clamping position to achieve unlocking. Although this operation is effective, when the weight is heavy, The friction force when the wedge or the roller is clamped is very large, which not only requires high strength of the entire self-locking device, but also requires a greater reverse force when unlocking, which easily deforms the internal parts and cannot be used normally. , or the reverse force makes the wedge or roller pop out suddenly and cause the heavy object to fall, there is a certain safety risk

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