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Tester for analyzing stress uniformity for elevator towing steel rope

A technology with uniform tension and elevator traction, applied in tension measurement, analysis of materials, instruments, etc., can solve problems such as difficulty in improving efficiency, difficulty in operation, and difficulty in ensuring measurement accuracy.

Inactive Publication Date: 2009-05-06
李宝华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because this method is difficult to operate, the measurement accuracy is difficult to guarantee
Moreover, after the inspection is completed, it is necessary to use a calculator to calculate the percentage of the tension deviation of each steel wire rope from the average value, so as to determine whether the tension of each steel wire rope meets the requirements, and the efficiency is difficult to improve

Method used

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  • Tester for analyzing stress uniformity for elevator towing steel rope
  • Tester for analyzing stress uniformity for elevator towing steel rope
  • Tester for analyzing stress uniformity for elevator towing steel rope

Examples

Experimental program
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Embodiment

[0029] In the design of the instrument, a photoelectric detection device composed of two hollow metal tubes with a square cross-sectional shape is cast on the upper part of the insulating casing. In order to ensure the fixed strength of the two metal tubes, the photoelectric detection device can not only detect the vibration period of the steel wire rope, but also eliminate the interference of the steel wire rope next to the steel wire rope under test. The plastic casting part is welded or riveted together with metal, and the length of the exposed part of the two metal pipes is recommended to reach 200mm. An infrared photo-emitting diode and an infrared receiving diode are respectively installed at the middle opening of the exposed part of the two metal tubes. A 5-digit LED digital tube is set in the middle and upper part of the insulating shell to display various information of the analyzer. Among them, the first digit from the left is used to display the serial number of th...

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Abstract

The invention relates to a tension uniformity analyzer of lifter drawing steel line, wherein said tester uses photoelectric detector to collect the vibration period of each steel line, and transforms the period into vibration frequency to be stored into the memory of single chip; based on the function relation between said frequency and tension, calculating out the tension percentage of each steel line; displaying the result on the LED. The invention can avoid force tester and steel rule, with simple operation. And it uses the vibration period to obtain the tension information, with high repeatability. And the single chip can display the result quickly, to improve the testing result.

Description

technical field [0001] The invention relates to an instrument for analyzing the tension uniformity of elevator traction wire ropes (hereinafter referred to as steel ropes) by measuring the vibration period, which is suitable for analyzing the tension uniformity of each steel wire rope of a traction-driven elevator. Shows the deviation of the individual rope tension from the average of all rope tensions. Background technique [0002] The uniformity of the elevator traction wire rope tension directly affects the service life of the elevator wire rope and traction sheave. At present, the domestic measurement method is mainly to use the tension meter and the steel ruler to measure together. First, the elevator car is run to the upper two-thirds of the stroke. The tension value when the wire rope is pulled the same distance. Because this method is difficult to operate, it is difficult to guarantee the measurement accuracy. And after detection, also will utilize calculator to c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L5/04G01D5/26G01N19/00
Inventor 李宝华
Owner 李宝华