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Break detection device

A detection device, the technology of the broken part, applied in the direction of transportation and packaging, lifts, etc., can solve the problem of broken strands and other problems

Active Publication Date: 2019-08-23
MITSUBISHI ELECTRIC CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If multiple wires break, sometimes strands made of twisted wires also break

Method used

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Examples

Experimental program
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Embodiment approach 1

[0039] figure 1 It is a figure which schematically shows an elevator apparatus. The car 1 moves up and down in the hoistway 2 . The hoistway 2 is, for example, a vertically extending space formed in a building. Counterweight 3 moves up and down in shaft 2. The car 1 and the counterweight 3 are suspended in the hoistway 2 by the main rope 4 . The roping method for suspending the car 1 and the counterweight 3 is not limited to figure 1 Example shown. For example, the car 1 and the counterweight 3 can also be suspended in the hoistway 2 in a 1:1 roping manner. In the following content, an example of suspending the car 1 and the counterweight 3 in a 2:1 roping manner will be described in detail.

[0040] One end 4 a of the main rope 4 is supported by a fixed body of the hoistway 2 . For example, the end part 4a of the main rope 4 is supported by the fixed body provided in the ceiling of the hoistway 2. As shown in FIG. The main rope 4 extends downward from the end portion ...

Embodiment approach 2

[0112] In this embodiment, differences from the example disclosed in Embodiment 1 will be described in detail. Regarding the points that are the same as those in the example disclosed in Embodiment Mode 1, description thereof will be appropriately omitted. The control device 13 in this embodiment and Figure 9 The illustrated example also includes, for example, a storage unit 20 , a car position detection unit 21 , an abnormal change detection unit 22 , a calculation unit 23 , a fracture determination unit 24 , an operation control unit 25 , and a notification unit 26 . In the example shown in this embodiment, the sensor signal is also input to the control device 13 . For example, a weighing signal output from the weighing device 12 is input to the control device 13 . The acceleration signal output from the accelerometer 14 is input into the control device 13 . The torque signal output from the hoisting machine 11 is input to the control device 13 . In addition, the rotati...

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PUM

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Abstract

A break detection device comprises a sensor, an abnormal variation detector (22), a storage unit (20), an arithmetic logical unit (23), and a break determination unit (24). The arithmetic logical unit(23) adds a determination point when the abnormal variation detector (22) detects that an abnormal variation has been generated when an elevator car (1) passes through a position stored in the storage unit (20). The arithmetic logical unit (23) subtracts a determination point if the abnormal variation detector (22) does not detect that an abnormal variation has been generated when the elevator car (1) passes through the position. The break determination unit (24) determines whether a break is present on a rope on the basis of the determination points.

Description

technical field [0001] The invention relates to a device for detecting a wire break or a strand break in a rope. Background technique [0002] Various types of ropes are used in elevator installations. For example, the car of an elevator is suspended in the hoistway by main ropes. The main rope is hung on pulleys such as the driving sheave of the traction machine. The main rope is bent repeatedly due to the movement of the car. Therefore, the main rope gradually ages. As the main rope ages, the wires that make up the main rope break. If multiple wires break, sometimes the strands made up of twisted wires also break. Breakage of the wire or breakage of the strands can also occur due to foreign matter being bitten between the main rope and the pulley. [0003] Broken wires or strands protrude from the surface of the main rope. Therefore, when the elevator is operated in a state where the wire or strand is broken, the broken wire or strand comes into contact with equipme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B5/02
CPCB66B7/1215B66B5/02B66B5/12
Inventor 加藤利明中泽大辅福井大树中谷彰宏村上博行盐崎秀树
Owner MITSUBISHI ELECTRIC CORP