Double-tensioning-wheel tensioning device for compensating rope

Abstract

The invention relates to a double-tensioning-wheel tensioning device for a compensating rope. The double-tensioning-wheel tensioning device is characterized in that the double-tensioning-wheel tensioning device comprises a fixing rack, a lifting mechanism, compensating rope tensioning wheels and a tensioning wheel frame; the fixing rack comprises an installing base, guiding rail racks and a limiting rod, wherein the guiding rail racks are on the two sides of the fixing rack, and the limiting rod is on the top of the fixing rack; the lifting mechanism comprises a hydraulic cylinder installing base, symmetrical hydraulic cylinders and a lifting transverse beam driven by pushing rods of the hydraulic cylinders; the two compensating rope tensioning wheels are arranged in the tensioning wheel frames front and back; the top of the tensioning wheel frame is arranged below the lifting transverse beam; and guiding shoes on the two sides of the tensioning wheel frame are operationally installed on the guiding rail racks of the fixing rack correspondingly. The double-tensioning-wheel tensioning device for the compensating rope is scientific and reasonable in structure design, achieves jumping and swinging of the compensating rope, meanwhile, has a safety protection function, largely improves the operating safety of an elevator, and is the highly creative double-tensioning-wheel tensioning device for the compensating rope.

Description

technical field [0001] The invention belongs to the technical field of elevators, in particular to a compensation rope tensioning device with double tensioning pulleys. Background technique [0002] Compensation ropes are often used in high-speed and ultra-high-speed van elevators. Because when the elevator is on the top floor, the steel wire rope is on the counterweight side, and the weight of the steel wire rope is added to the counterweight side; when the elevator is on the bottom floor, the steel wire rope is on the car side, and the weight of the steel wire rope is added to the car side. Due to the weight of the steel wire rope, as the elevator moves up and down, dynamic imbalance will be generated. Therefore, the compensation rope can be used to balance this part of the drop, which is used to compensate the weight of the steel wire rope and make the elevator run smoothly. The compensation rope hangs in the hoistway, and will jump and swing along with the operation of ...

AI Technical Summary

Problems solved by technology

However, in this single-wheel compensating rope tensioning device, since the diameter of the wheel is smaller than the width between the counterweight mechanism and the car frame, after the compensating rope goes around, the entering and exiting ropes of the compensating rope are not vertical. Rather, it has a certain angle, which causes the compensation rope tensioner to be subjected to a certain torque, causing pressure friction on the guide shoe of the tensioner frame against the fixed frame, affecting its service life, and is not conducive to the stability of the car

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