Radial pressing mechanism and lifting device comprising same

Abstract

The invention provides a radial pressing mechanism. The radial pressing mechanism comprises a rotating disc and a pressing part; the pressing part is of a chain structure and comprises chain plates and idler wheels; the chain plates are sequentially articulated; the idler wheels are articulated between the chain plates positioned at the two sides; the two ends of the pressing part are fixed and are arranged at the periphery of the rotating disc; a rope penetrates through the position between the rotating disc and the pressing part; the rope is pressed by the idler wheels so as to make contactwith the rotating disc; when the rotating disc runs on the rope, the rope is used for driving the idler wheels to rotate; the invention also provides a lifting device; the lifting device comprises a frame, the rope, a power mechanism and the radial pressing mechanism; the radial pressing mechanism has the advantages of simple structure, small abrasion, little generated heat, long service life andreliable pressing; and the lifting device comprising the radial pressing mechanism has the advantages of being simple in structure, safe, reliable and long in service life.

Description

technical field [0001] The invention relates to the field of mechanical equipment, in particular to a pressing mechanism and a lifting device. Background technique [0002] The lifting device is a device that enables people or things to move back and forth between low and high places. The important indicators of the lifting device are: 1. Safety; 2. Detachability; 3. Has the function of crisis relief and escape. [0003] At present, the common lifting mechanisms include civil elevators and building elevators. Civilian elevators have high requirements for supporting facilities, and generally cannot be used for outdoor operations; cables are used for lifting, and cable breakage is prone to fall accidents. In addition, power failure during operation is not conducive to escape. Construction lifts are suitable for outdoor use, but steel pipe supports are required, making the construction relatively complex and costly. At the same time, construction lifts are lifted by cables, wh...

AI Technical Summary

Problems solved by technology

Regardless of the above-mentioned method to ensure the static friction between the rope and the turntable, there are always the following problems: 1. During the lifting process of the lifting device, there is sliding friction between the pressing member and the rope, and the sliding friction and static friction The force is proportional to the relationship. On the one hand, the existence of the sliding friction will generate a lot of heat, which poses a safety hazard. On the other hand, long-term friction will cause the rope and the pressing parts to wear out continuously, which also poses a safety hazard.

2. The pressing parts are generally fixed. As the use time increases, the pressing parts will wear out continuously, the pressure will decrease, and the static friction will also decrease. On the one hand, the load-bearing capacity of the lifting device will be reduced, and on the other hand, there will be static friction Risk of abrupt change of force into sliding friction

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