Elevator traction system

Abstract

The invention discloses an elevator traction system. The system comprises two lift cars which are sequentially arranged in the same hoistway in the height direction, two driving devices mounted at thetop of the hoistway, a balance weight and a set of traction ropes, wherein vertical projection positions of the driving devices are located on the same sides of the cars, the balance weight is located in the hoistway and located below the two driving devices, two ends of the traction ropes are directly or indirectly connected with the hoistway through corresponding rope head devices, and the traction ropes sequentially wind around one lift car, one driving device, the balance weight, the other driving device, the other lift car from one ends of the traction ropes to the other ends of the traction ropes. The system is advantaged in that the balance weight is balanced in stress, operation is stable, and cost and the well space are saved.

Description

technical field [0001] The present application relates to the technical field of elevators, in particular to an elevator traction system. Background technique [0002] In order to effectively improve the operating efficiency of elevators in high-rise buildings, there are many elevator systems that install two or more cars in the same shaft, and the two or more cars can run independently up and down, so as to use the building space more effectively and Improve the transportation capacity of the elevator system. The core of realizing the mechanical part of this elevator system lies in how reasonable the components of the traction system (hereinafter referred to as "traction system"), such as the balance weight, driving device, suspension rope and its guide sheave, are pulled by each car. Optimum design and layout can ensure the optimal use of the hoistway space and keep the traction system of the elevator safe, reliable and stable during operation. [0003] Disclosed a kind ...

AI Technical Summary

Problems solved by technology

[0004] (1) The traction suspension rope of the lower car is divided into two parts, which are respectively fixed on both sides of the car. If the rope is not evenly tightened or the car is unbalanced during the installation process, the problem of uneven wear of the ropes on both sides will easily occur.

[0005] (2) The two cars share a balance counterweight, the two cars adopt a traction ratio of 1:1, and the balance counterweight adopts a traction ratio of 2:1. The separated suspension ropes on the side of the lower car will merge together as the two cars go up the hoistway, and then go around the reverse sheave set on the balance device together, and the unevenly worn ropes will go around Passing the reverse sheave is easy to cause job hopping

[0007] (4) The layout of the driving device and the corresponding guide sheave in the machine room is too complicated, which greatly increases the cost and design difficulty of the corresponding load-bearing support structure. At the same time, the complex load-bearing support structure will inevitably lead to the operation and maintenance of equipment in the machine room. greatly limited

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