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Pulley wearing amount measuring device of elevator

A technology for measuring device and wear amount, which is applied to measuring devices, optical devices, elevators in buildings, etc., can solve problems such as deviation error of stop position, and achieve the effect of simple structure

Inactive Publication Date: 2011-09-21
TOSHIBA ELEVATOR KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the above-mentioned deviation in the stop position of the car becomes a measurement error.

Method used

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  • Pulley wearing amount measuring device of elevator
  • Pulley wearing amount measuring device of elevator
  • Pulley wearing amount measuring device of elevator

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0034] figure 1 It is an overall schematic view showing the sheave wear amount measuring device for an elevator according to the first embodiment. Fig. 2 is a schematic diagram illustrating a method of detecting a travel distance of a passenger car. image 3 It is a functional block diagram of the calculation unit of the wear amount of the pulley groove. In these drawings, the same symbols represent the same elements.

[0035] The pulley wear measurement device includes: a hoisting pulley 4 (pulley) directly connected to the engine shaft 3 of the engine 2, a pulse generator 5 that outputs a symbolic pulse signal according to the number of rotations of the engine shaft 3 and the rotation angle, and respectively winding Multiple (only one is shown in the figure) hoisting cables 6 on the hoisting pulley 4. The hoisting pulley 4 has a groove portion on which the hoisting cable 6 is wound. The hoisting pulley 4 and the engine 2 constitute a hoisting machine. The pulse generat...

no. 2 approach

[0077] The elevator sheave wear measuring device according to the second embodiment of the present invention similarly measures the effective diameter of the hoisting sheave 4 and measures the wear of the sheave groove surface in which the hoisting rope 6 is fitted.

[0078] The sheave wear amount measurement device of an elevator according to the present embodiment measures the wear amount by using a speed control device whose movement speed detection error is small by periodic calibration.

[0079] Figure 5 It is an overall schematic view of the elevator sheave wear measuring device according to the present embodiment. Figure 6 It is a functional block diagram of the calculation unit of the wear amount of the pulley groove. In these drawings, the same symbols as those appearing before represent the same constituent elements.

[0080] The pulley wear measurement device of the elevator comprises: a hoisting pulley 4 directly connected to the motor shaft 3 of the motor 2 of...

no. 3 approach

[0105] In the first embodiment, the modified example, and the second embodiment described above, any one of the pulley wear measuring devices may have the function of correcting the data of the effective diameter. The elevator sheave abrasion measuring device according to the third embodiment of the present invention measures the effective diameter of the hoisting sheave 4 and measures the abrasion of the sheave groove surface where the hoisting cable 6 is fitted.

[0106] Figure 7 It is a functional block diagram of the calculation part of the wear amount of a sheave groove in the elevator sheave wear amount measurement apparatus concerning this embodiment. In the pulley wear measuring device of the present embodiment, the function of the calculation unit 45 is provided in a calculation device in a control panel. The function of the calculation unit 45 is realized by CPU, ROM, RAM, and the like. The computing device has a function of storing the cable diameter of the hoist...

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Abstract

The present invention provides a pulley wearing amount measuring device of an elevator, which can correctly measure wearing amount of pulley grooves through a simple structure. The pulley wearing amount measuring device comprises the following components: a windlass which is provided with a pulley (4) and an engine (2) that causes the pulley (4) to rotate, while the pulley is provided with a slot part on which a hoisting cable (6) of a suspension cage (8) is suspended; a cage position detection part (18a) which detects rotation amount of the pulley (4) and detects the cage position through the rotation amount; a stopping detection device (9) which is provided in the cage (8); a reference part (11) which is referred by the stopping detection device (9) and is provided in a lifting channel (7); a storage part (17) which stores the position of the reference part (11) in the lifting channel; a pulley rotation amount detection part (19) which detects whether a cage (8) moves for a preset reference distance through a position in the lifting channel and the cage position that is detected by the cage position detection part (18a) and detects a rotation amount of the pulley (4) in an advance reference distance period of the cage (8); and a calculation part (18) which calculates the abrasion amount of groove part of the pulley (4) through the rotation amount of the pulley (4).

Description

technical field [0001] The invention relates to a device for measuring the wear amount of pulleys of an elevator. Background technique [0002] An elevator is composed of a hoist and a sheave as a drive unit, an elevator car chamber, a counterweight (C / W), and a plurality of cables connecting the car and the counterweight. Each cable is suspended by a pulley. Through the rotary motion of the pulley, the passenger car travels in the up and down direction. Also, the outer peripheral surface of the pulley is provided with a pulley groove allowing frictional force to act between the cable and the pulley. [0003] The pulley grooves provided in the pulleys are gradually worn due to contact with the cables over time. As wear increases, the friction of the cables and pulleys decreases. As a result, the weight difference between the passenger car and the counterweight cannot be absorbed by the pulley groove. Thus, the cable tends to slip. Therefore, the management of the pulle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B5/00B66B11/04G01B11/00
Inventor 上村晃正中田好彦吉冈贤司
Owner TOSHIBA ELEVATOR KK
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