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Wear detection device for elevator driving rope sheave and detection method

A detection device and detection method technology, applied in the direction of measuring devices, transportation and packaging, instruments, etc., can solve the problems of not considering the slippage of the elevator driving rope sheave and the low accuracy of wear detection results

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

[0005] 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 at the same time overcome the existing public technology Existing problems such as the inability to evaluate the detection results, not relying on the elevator to write layers, low accuracy of wear detection results, not considering the possible slippage between the elevator drive sheave and the elevator drive rope, and the elevator driving can only be performed when the car is in a specific area Defects such as rope wheel wear

Method used

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

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Embodiment 1

[0059] 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), the line displacement detection device (code reader 14 and yardstick 13) that is used to detect elevator drive sheave line displacement and the elevator drive sheave angular displacement and line that detect according to described angular displacement detection device The wear calculation unit for calculating the wear and tear of the elevator drive sheave from the displacement of the elevator drive sheave line detected by the displacement detection device. The car 8 and the counterweight 9 are suspended in the elevator shaft by the driving rope 6 through the driving sheave 1 and the guide wheel 5 . Right below the car 8 and the counter...

Embodiment 2

[0082] see figure 2 The overall structural schematic diagram of the second embodiment of the elevator drive sheave wear detection device of the present invention shown is different from Embodiment 1 in that it is used to evaluate the calculation results of the wear detection calculation unit and give The wear evaluation unit with the corresponding evaluation results will only be described below with regard to the differences from Embodiment 1.

[0083] 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 driving sheave is 0~△D max , you can set 0~△D as needed max Divided into n (n≥2) intervals, namely 0~△D max1 、△D max1 ~△D max2 ,...,△D maxn-1 ~△D maxn , and then name eac...

Embodiment 3

[0086] see image 3 The schematic diagram of the overall structure of the third embodiment of the elevator drive sheave wear detection device of the present invention is shown. The difference from Embodiment 2 is that the detection results based on the angular displacement detection device and the linear displacement detection device are added. The slipping judging unit for judging whether there is slipping between the elevator driving sheave and the driving rope will only be described below with regard to the differences from Embodiment 2.

[0087] The slip judgment unit judges whether there is slip between the elevator drive sheave and the drive rope according to one or more of the following methods:

[0088] Method 1: Using the linear displacement of the elevator driving sheave detected by the linear displacement detection device and the nominal value of the diameter of the elevator driving sheave to calculate the rotation angle of the elevator driving sheave, and combining...

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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, a linear displacement detection device and a wear calculating unit, wherein the wear calculating unit is used for calculating the wear of the elevator driving rope sheave; and the wear calculating unit is used for calculating the practical value of the diameter of the elevator driving rope sheave according to the angular displacement of the elevator driving rope sheave detected by using the angular displacement detection device and the linear displacement of the elevator driving rope sheave detected by using the linear displacement detection device, and is further used for calculating the wear loss of the elevator driving rope sheave according to the practical value of the diameter and the nominal value of the diameter of the elevator driving rope sheave. According to the wear detection device, the linear displacement or angular displacement can be changed as required, slippage between the elevator driving rope sheave and an elevator driving rope can be judged, the wear detection result of the elevator driving rope sheave can be evaluated correspondingly, a specific area where an elevator car is positioned is not limited, and wear of the elevator driving rope sheave can be detected at any time. The invention further discloses a wear detection method for the elevator driving rope sheave.

Description

technical field [0001] The invention relates to an accessory of a traction elevator, in particular to an elevator driving sheave wear detection device. The invention also relates to a method for detecting the wear of the elevator driving sheave. Background technique [0002] In the process of long-term contact friction and possible slippage, the contact surface between the elevator drive sheave and the rope will gradually be worn. The wear of the contact surface of the elevator driving sheave will reduce the friction coefficient between it and the rope on the one hand, increase the occurrence frequency of slipping, and cause safety problems such as braking that cannot immediately stop the car. On the other hand, excessive sheave grooves Wear will also lead to a large error between the actual radius of rotation of the elevator drive sheave and its nominal value, resulting in a reduction in elevator control performance (such as leveling accuracy, etc.). Therefore, it is nece...

Claims

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Application Information

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IPC IPC(8): B66B5/00G01B21/12
Inventor 陈玉东
Owner SHANGHAI MITSUBISHI ELEVATOR CO LTD
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