Axial tightly-pressing mechanism and lifting device provided with same

Abstract

The invention discloses an axial tightly-pressing mechanism. The axial tightly-pressing mechanism comprises a rotating disc and a tightly-pressing component. A support table extends out of the circumferential side of the bottom of the rotating disc. A rope surrounds the periphery of the rotating disc in the circumferential direction of the rotating disc and is arranged on the support table. The tightly-pressing component comprises a pressing shell and pressing rolling wheels. The pressing rolling wheels are rotatably arranged on the pressing shell. The pressing shell can be fixed in the axialdirection of the rotating disc. The pressing rolling wheels press the rope in the axial direction of the rotating disc and enable the rope to be in contact with the support table. When the rotating disc advances on the rope, the rope drives the pressing rolling wheels to rotate. A lifting device comprises a rack, a rope, a power mechanism and the axial tightly-pressing mechanism. The axial tightly-pressing mechanism has the advantages of being simple in structure, small in abrasion, low in heat generation capacity, long in service life and reliable in pressing. The lifting device 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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