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Rope inspection system for elevator

An inspection system, rope technology, used in elevators, transportation and packaging, etc., can solve problems such as the influence of marking interval measurement accuracy and the inability to synchronize

Active Publication Date: 2021-05-28
TOSHIBA ELEVATOR KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If such a slipping phenomenon exists, the number of pulses with respect to the feeding amount of the rope cannot be accurately synchronized, which will affect the measurement accuracy of the mark interval.

Method used

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  • Rope inspection system for elevator
  • Rope inspection system for elevator
  • Rope inspection system for elevator

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0031] figure 1 It is a figure which shows the schematic structure of the elevator concerning 1st Embodiment. exist figure 1 In the example of , assume a machine-room-less elevator that does not have a machine room.

[0032] The car 20 and the counterweight 21 are vertically supported by guide rails 11 and 12 vertically installed in the hoistway 10, respectively. Furthermore, a traction machine 23 having a traction sheave 22 is provided on the upper portion of the hoistway 10 . The car 20 and the counterweight 21 are suspended in the hoistway 10 by a plurality of main ropes 24 . In addition, in figure 1 Only one main rope 24 is shown in , and illustration of the other main ropes 24 is omitted.

[0033] Both ends of the main rope 24 are fixed to the upper end of the hoistway 10 via tether members 25a, 25b, respectively. In addition, the main rope 24 is continuously wound around the car sheave 26, the traction sheave 22, and the counterweight sheave 27 at an intermediate p...

no. 2 Embodiment approach

[0084] Next, a second embodiment will be described.

[0085] In the second embodiment, the marking interval is measured during the preparatory operation, and if the measurement result is within a predetermined range, it is treated as valid.

[0086] Figure 10 It is a flowchart for explaining the operation of the rope inspection system in the second embodiment, and shows a process of automatically measuring the intervals between the plurality of marks 45 given to the main rope 24 .

[0087] First, the control panel 40 starts preliminary operation at a predetermined speed after initial setting of various conditions related to marker measurement including the lift range and operating speed (step S201 ).

[0088] Here, in the second embodiment, the marking interval measurement process is executed during the preliminary operation. That is, while the car 20 is running at a predetermined speed, the calculation device 30 acquires the pulse signal output from the encoder 29 via the ...

no. 3 Embodiment approach

[0099] Next, a third embodiment will be described.

[0100] In the third embodiment, the rope inspection system having the preparatory operation and the measuring operation is provided with a function of counting the number of marks during the measuring operation, and when the number of marks finally obtained after the operation is abnormal, it is required to Perform rope repairs.

[0101] Figure 11 It is a flowchart for explaining the operation of the rope inspection system in the third embodiment, and shows a process of automatically measuring the intervals between the plurality of marks 45 given to the main rope 24 .

[0102] First, the control panel 40 starts preliminary operation at a predetermined speed after initial setting of various conditions related to marker measurement including the lift range and operating speed (step S301 ).

[0103] After the preliminary operation is completed (YES in step S303), the control panel 40 performs a measurement operation at a pre...

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PUM

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Abstract

The invention provides a rope inspection system for an elevator, which measures a mark interval on a rope with high precision and performs strength management with high reliability. In the rope inspection system for the elevator according to one embodiment, the degradation state of a plurality of ropes which hang a lift car and a counterweight through a traction sheave of a traction machine and have a structure of which the surfaces are coated with resin can be inspected by measuring the intervals of the plurality of marks arranged on the surfaces of the ropes. The rope inspection system for the elevator is provided with a control device which performs a preliminary operation for averaging the tension between the ropes, and then performs a measurement operation for measuring the intervals between the marks.

Description

[0001] This application is based on Japanese Patent Application No. 2019-204802 (filing date: November 12, 2019), and enjoys priority based on this earlier application. This application incorporates the entire content of the above-mentioned prior application by referring to the above-mentioned prior application. technical field [0002] Embodiments of the present invention relate to a rope inspection system for an elevator. Background technique [0003] In general, there is a machine-room-less elevator in which space is saved by accommodating elevator equipment such as a traction machine in a hoistway. In machine-room-less elevators, the sheave (traction sheave) of the traction machine is downsized. Therefore, steel cables in which the surface of the tensile member is coated with a resin material having wear resistance and a high coefficient of friction such as polyurethane are used as main ropes having a high-strength rope structure that is strong in bending fatigue resist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B7/12B66B7/06B66B5/00
CPCB66B7/1238B66B7/1223B66B7/06B66B5/0037
Inventor 中田好彦田岛翔
Owner TOSHIBA ELEVATOR KK