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Wear detection device for elevator driving rope sheave

A detection device and rope wheel technology, which is applied in transportation, packaging, elevators, etc., can solve the problems of not considering the slipping of the elevator driving rope wheel and the elevator driving rope, relying on the elevator to write layers, and low accuracy of wear detection results, achieving high precision Effect

Active Publication Date: 2013-07-17
SHANGHAI MITSUBISHI ELEVATOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide an elevator drive sheave wear detection device that can set a uniform reference distance for all elevators to achieve high-precision detection of elevator drive sheave wear and evaluate the detection results. At the same time, it overcomes the shortcomings in the prior art such as the need to set different reference distances for different building measurements, low accuracy of wear detection results, reliance on elevator writing layers, and failure to consider the possible slippage between the elevator drive sheave and the elevator drive rope.

Method used

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  • Wear detection device for elevator driving rope sheave
  • Wear detection device for elevator driving rope sheave
  • Wear detection device for elevator driving rope sheave

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] see figure 1 Shown is the overall structure diagram of the first embodiment of the elevator drive sheave wear detection device of the present invention, the elevator drive sheave wear detection device includes an angular displacement detection device (driver) for detecting the elevator drive sheave angular displacement Sheave encoder 2), angular displacement detection start-stop determination device (8a and 8b, 6), storage unit for storing the distance of the reference interval formed by said reference object or object to be referred to and used for calculating the drive sheave of the elevator Worn wear calculation unit. The car 9 and the counterweight 10 are suspended in the elevator shaft by the driving rope 7 through the driving sheave 1 and the guide wheel 4 . Right below the car 9 and the counterweight 10 are respectively provided with a car buffer 12 and a counterweight buffer 13 . The car 9 drives the speed governor rope 5 to move synchronously through a connec...

Embodiment 2

[0062] see figure 2 The overall structure schematic diagram of the second embodiment of the elevator drive sheave wear detection device shown in the present invention is different from Embodiment 1 in that it is used to evaluate the calculation results of the wear calculation unit and give For the wear evaluation unit corresponding to the evaluation results, only the differences from Embodiment 1 will be described below.

[0063] The wear evaluation unit for evaluating the calculation result of the wear calculation unit evaluates the calculation result of the wear calculation unit according to a preset evaluation index, and gives a corresponding evaluation result. The evaluation index is a multi-segment interval index, such as: the allowable range of the diameter of the elevator drive sheave is 0~ΔD max , you can set 0~ΔD as needed max Divided into n (n≥2) intervals, that is, 0~ΔD max1 , ΔD max1 ~ΔD max2 ,...,ΔD maxn-1 ~ΔD maxn , and then name each interval separately,...

Embodiment 3

[0066] see image 3 The overall structure schematic diagram of the third embodiment of the elevator drive sheave wear detection device shown in the present invention is different from Embodiment 2 in that it is added to judge the elevator drive sheave 1 according to the detection results of the angular displacement detection device. The slip judging unit for whether there is slip between the driving rope 7 and only the differences from Embodiment 2 will be described below.

[0067] In addition to storing the reference interval distance, the storage unit also stores the nominal value of the diameter of the elevator driving sheave and / or the actual value of the diameter of the elevator driving sheave previously detected by the elevator driving sheave wear detection device.

[0068] The slip judgment unit judges whether there is slip between the elevator drive sheave 1 and the drive rope 7 according to one or more of the following methods:

[0069] Method 1: Calculate the rotati...

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Abstract

The invention discloses a wear detection device for an elevator driving rope sheave. The wear detection device comprises an angular displacement detection device, an angular displacement detection start-stop determining device, a storing unit, a wear calculating unit, a slippage judging unit and a wear evaluating unit, wherein the wear calculating unit is used for calculating the wear of the driving rope sheave according to the angular displacement of the driving rope sheave detected by using the angular displacement detection device in a time interval from the starting moment to the stopping moment of angular displacement detection determined by using the angular displacement detection start-stop determining device, and distances among standard intervals in the storing unit. According to the wear detection device for the elevator driving rope sheave disclosed by the invention, a uniform standard distance can be set for all elevators, the wear detection result accuracy of the driving rope sheave is high, the special situation of slippage existing between the elevator driving rope sheave and an elevator driving rope can be coped with, and corresponding evaluations can be made for a wear detection result.

Description

technical field [0001] The invention relates to an accessory of a traction elevator, in particular to an elevator driving sheave wear detection device. Background technique [0002] The traction elevator uses the driving motor to drive the driving sheave to rotate, and then uses the friction between the driving sheave and the rope used to suspend the elevator car to realize the lifting movement of the elevator car in the hoistway. Normally, the rope is transmitted by friction through contact with the sheave groove of the drive sheave. In addition, in some special cases, slipping will occur between the sheave groove and the rope. In the process of long-term contact friction and possible slippage, the contact surface between the sheave groove and the rope will be gradually worn. On the one hand, the wear of the contact surface will reduce the friction coefficient between it and the rope, increase the frequency of slipping, and cause safety problems such as braking that canno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B5/00
Inventor 陈玉东
Owner SHANGHAI MITSUBISHI ELEVATOR CO LTD
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