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Rope deterioration elongation diagnosis device for elevator, rope deterioration elongation diagnosis method for elevator, and projecting member for rope deterioration elongation diagnosis for elevator

A diagnostic device and rope technology, which is applied in the field of elevator rope degradation stretching diagnosis device, diagnosis and protrusion parts for elevator rope deterioration stretching diagnosis, can solve the problems of time and effort, and achieve the effect of suppressing vibration

Active Publication Date: 2017-05-10
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, even when the distance between the counterweight and the buffer is reliably ensured to be greater than the set value, the maintenance personnel need to check the distance between the counterweight and the buffer every time during periodic inspections.
Therefore, time and effort are spent on regular inspections by maintenance personnel

Method used

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  • Rope deterioration elongation diagnosis device for elevator, rope deterioration elongation diagnosis method for elevator, and projecting member for rope deterioration elongation diagnosis for elevator
  • Rope deterioration elongation diagnosis device for elevator, rope deterioration elongation diagnosis method for elevator, and projecting member for rope deterioration elongation diagnosis for elevator
  • Rope deterioration elongation diagnosis device for elevator, rope deterioration elongation diagnosis method for elevator, and projecting member for rope deterioration elongation diagnosis for elevator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0041] figure 1 It is a block diagram showing the whole elevator in Embodiment 1 of the present invention. like figure 1 As shown, the machine room 2 is set on the top of the hoistway 1. In the machine room 2, a hoisting machine 3 having a sheave, a deflector pulley 4, and an elevator control device 20 are installed. In addition, the hoisting machine 3 and the deflector pulley 4 are arranged at intervals from each other.

[0042] A common main rope (for example, rope, belt) 5 is wound around the sheave and deflector pulley 4 . Hereinafter, the main rope 5 will be described as the rope 5 . Car 6 and counterweight 7 are suspended on rope 5 . In this example, the upper portion of the car 6 is connected to one end of the rope 5 via a shackle spring 8a, and the upper portion of the counterweight 7 is connected to the other end of the rope 5 via a shackle spring 8b.

[0043] The sheave is rotated by the driving force of the traction machine 3, whereby the car 6 and the counter...

Embodiment approach 2

[0117] In Embodiment 1 above, the position S1 where the protruding member 30 is attached is determined without considering the change characteristics of the elongation rate of the rope accompanying the deterioration of the rope 5 . On the other hand, in this Embodiment 2, the case where the position S1 which attaches the protrusion member 30 is suitably determined using the change characteristic of the rope elongation rate accompanying the deterioration period of the rope 5 is demonstrated.

[0118] Figure 15 It is a graph showing the relationship between the number of operations and the rope elongation ratio when the rope 5 of the elevator in the second embodiment is subjected to bending fatigue along with the operation of the elevator. like Figure 15 As shown, the deteriorated stretch of the rope 5 can be roughly classified into three regions.

[0119] Specifically, the first zone is the initial tension zone Z1 where rope tension occurs from the moment the elevator is in...

Embodiment approach 3

[0127] In the above-mentioned Embodiment 1, the example in which the one protrusion member 30 was provided along the height direction of the counterweight rail 9 was demonstrated. On the other hand, in this third embodiment, an example in which a plurality of protrusion members 30 are provided along the height direction of the counterweight rail 9 will be described.

[0128] Figure 16 It is an enlarged perspective view showing the protruding member 30 provided on the counterweight guide rail 9 in the third embodiment. like Figure 16 As shown, on the opposing surface 90a of the sliding portion 9a of the counterweight guide rail 9, a plurality (three in this example) of counterweight guide rails 9 having the same cross-sectional shape as that of the first embodiment is provided along the height direction of the counterweight guide rail 9. Protruding part 30.

[0129] In Embodiment 3, each protrusion member 30 is arrange|positioned in the state adjacent to each other in the ...

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PUM

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Abstract

The present invention is provided with a protruding member (30) which is provided between an initial stop position of a balance weight (7) when a car (6) is stopped on the top floor at the time of installation and a weight buffer (11) disposed below the balance weight (7), and when the deterioration elongation amount of a rope (5) due to aged deterioration exceeds a preset allowable range, mechanically comes into contact with the balance weight (7) and gives disturbance thereto, and the protruding member (30) has such a cross-sectional shape that the frequency of the disturbance given from the protruding member (30) to the balance weight (7) becomes a desired specific frequency defined such that vibration transmitted to the car (6) via the balance weight (7) becomes smaller than a predetermined vibrational frequency.

Description

technical field [0001] The present invention relates to an elevator rope deterioration tension diagnosis device for diagnosing deterioration tension generated in an elevator rope due to aging deterioration, an elevator rope deterioration tension diagnosis method, and an elevator rope deterioration tension diagnosis protrusion member . Background technique [0002] In general, the ropes connecting the car and the counterweight of the elevator are hung on the pulleys for use. As a result, the rope is subjected to repeated bending fatigue over a long period of time as the car is raised and lowered, so that the rope is stretched. In the state where the rope is stretched, the stop position of the counterweight when the car stops at the uppermost floor is in a state that is closer to the bottom of the hoistway by the amount of rope stretch than at the time of installation. [0003] Therefore, in the case of placing regardless of the tension of the rope, the distance between the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B5/12B66B5/00
CPCB66B7/022B66B5/12B66B7/1215
Inventor 福井大树
Owner MITSUBISHI ELECTRIC CORP