Elevator dragging and suspension system

Abstract

The invention discloses an elevator dragging and suspension system. The elevator dragging and suspension system comprises a plurality of work wheels and a dragging and suspension rope wound on the work wheels. The work wheels comprise at least two classes, one class includes dragging wheels, and the other class includes guide wheels moving along with a lift car and a counterweight, and the dragging and suspension rope is matched with one class of work wheels in an axial limiting full-restraining mode, and matched with the other class of work wheels in an axial sliding free-restraining mode. The elevator dragging and suspension system is suitable for being used in various elevator systems with the winding ratio being 2:1 or 4:1. When an elevator operates, the dragging and suspension rope can swim and twist relative to the work surface of the guide wheels moving along with the lift car and the counterweight, abrasion of the dragging and suspension rope, caused by the dragging wheels and the guide wheels, is reduced, and the service life of the dragging and suspension rope is prolonged on the premise of safe and stable operation of the elevator.

Description

technical field [0001] The invention relates to the technical field of elevators, in particular to an elevator traction suspension system. Background technique [0002] The elevator is a moving device used to carry a certain load. Many factors will cause the problem of the deviation of the traction suspension cable during the operation of the elevator, for example, the construction quality of the building, ground settlement, building wind load, elevator installation quality, And the load distribution inside the car is not balanced. [0003] Once the traction suspension cable deviates too much, it will lead to faster wear and tear of the traction suspension cable and shorten its life. If it is not maintained in time, the traction suspension cable will have the risk of breaking. [0004] The winding ratio used in the elevator traction suspension system in the prior art is usually 2:1 or 4:1, and has been widely used in machine room elevators, machine room-less elevators, medi...

AI Technical Summary

Problems solved by technology

[0014] When the load in the car is unbalanced, or the installation accuracy of the elevator exceeds the expected error, since the steel belt wound on the traction wheel and the guide wheel can slide freely in the axial direction, it cannot be reset in time, which will cause the steel The belt shifts to a certain side, and eventually the side of the steel belt will produce interaxial friction with the traction wheel or guide wheel. The long-term axial friction will shorten the life of the steel belt. In severe cases, the steel belt may be worn off, causing security incident

[0015] In addition, in order to reduce the impact of unbalanced loads in the car, or to reduce the accuracy error of elevator installation, it is necessary to lengthen the working surface of the traction wheel or guide wheel, which leads to the lengthening of the traction shaft of the traction machine and the size of the main engine. bulky, costly

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