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Elevator long object hook detection device

A detection device and a technology for long objects, which are used in transportation and packaging, elevators, etc., and can solve problems such as difficult detection of hooks

Active Publication Date: 2016-09-28
HITACHI LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the ropes used in elevators have multiple strands twisted together, they stretch like a spring, or stretch as the twists tighten
Therefore, it is difficult to detect hooking from the rise of the lowermost end of a rope that is hundreds of meters long like a super high-rise building.

Method used

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  • Elevator long object hook detection device
  • Elevator long object hook detection device
  • Elevator long object hook detection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] [Principle Description]

[0083] figure 1 Indicates the state that the rope is hooked on the protrusion in the hoistway. figure 1 (a) is a view of the interior of the elevator hoistway 1 viewed from the side of the elevator hall door 100, figure 1 (b) is the figure which looked at the inside of this hoistway 1 from the front side direction of the elevator hall door 100. As shown in FIG. The top of the elevator car of the elevator is provided with a stop floor detection device (not shown), which is a magnetic sensor or a photoelectric sensor. Furthermore, on the side of the hoistway, a shielding panel 2 (the specific structure is not shown) is attached to the upper part of the door of each floor. As far as the shielding boards 2 (2-1 to 2-7) are concerned, when the elevator car of the elevator stops at any floor, the shielding boards 2 block the magnetism or light of the stop floor detection device, thereby detecting the elevator car. The stop or stop position of the...

Embodiment 2

[0130] Figure 13 It is a block diagram showing a long object hook detection device for an elevator as a second embodiment of the present invention.

[0131] In this embodiment, as the long object hooking detection parts 20-1, 20-2, ..., 20-n (n is an integer greater than or equal to 2) shown in this figure, a plurality of Figure 8 The long object hook detection device 20 of the elevator is shown. Each imaging unit that the long object hooking detection unit 20-1, 20-2, ..., 20-n possesses is installed in a manner to bring the shielding panels 2 of different floors into the field of view respectively (refer to figure 2 ). The outputs of the long object hooking detectors 20 - 1 , 20 - 2 , . And, when the output of the vibration sensor 45 is input to the activation unit 46, the activation unit 46 activates the long object hook detection units 20-1, 20-2, . . . , 20-n and the elevator car stop floor determination unit 47.

[0132] First, the vibration sensor 45 outputs an o...

Embodiment 3

[0135] Figure 14 It is a block diagram showing a long object hooking detection device for an elevator as a third embodiment of the present invention.

[0136] The long object hook detection device 50 of the elevator of the present embodiment includes an imaging unit 5, a three-dimensional distance sensor 51, a setting tool 21, an area image holding unit 25, a time averaging unit 26, a rope detecting unit 27, and a direction measuring unit 28. , a distance measurement unit 29 , a hook presence / absence determination unit 30 , and a determination result output unit 31 . It should be noted that, in the long object hook detection device 50 of the elevator, with Figure 8 The processing functions of the blocks with the same symbols in the processing blocks of the long object hooking detection device 20 of the elevator are also the same.

[0137] The three-dimensional distance sensor 51 can be a device capable of detecting distance in the depth direction, such as a stereo camera o...

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Abstract

The invention provides a hooking and detecting device for long-strip-shaped objects of an elevator capable of reliably determining whether ropes and other long-strip-shaped objects are hooked towards protrusions of an elevating channel after an earthquake shakes. The hooking and detecting device is provided with a camera shooting portion (5) for acquiring images of the elevating channel in the elevator, a direction measuring portion (28) used for measuring the directions of the ropes in the elevating channel based on images acquired by the elevating channel, a distance measuring portion (29) used for measuring distances among the protrusions in the elevating channel among the ropes and a hooking existence determining portion (30) used for determining whether the ropes are hooked towards the protrusions based on directions measured by the direction measuring portion (28) or the distances among the protrusions and the ropes measured by the distance measuring portion (29).

Description

technical field [0001] The invention relates to an elevator long object hooking detection device which uses images to detect the situation that ropes and other long objects are hooked on elevator equipment. Background technique [0002] Since the ropes of the elevator, which may be stopped due to large shaking such as an earthquake, are hooked to the equipment in the hoistway, it cannot be automatically restored even after the shaking is over. On the other hand, after the end of shaking, a maintenance worker is sent to the site to restore the rope after confirming that the rope is not caught. However, it takes a lot of time for maintenance workers to check all the elevators in urban areas after an earthquake or the like, thus delaying recovery. In response to this, there is known a technique for automatically determining whether or not the rope is caught. [0003] For example, in the technique described in Patent Document 1, the rope position after a constant time has elap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B5/00
CPCB66B5/0031B66B5/022
Inventor 高桥一哉中村元美山口胜美关根英则关谷裕二
Owner HITACHI LTD
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