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Chain extension detection device of passenger conveyor

A technology for passenger conveyors and detection devices, which is used in transportation, packaging, escalators, etc., and can solve the problem of being unable to remotely detect chain elongation

Pending Publication Date: 2022-02-18
TOSHIBA ELEVATOR KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The operator goes to the site and directly measures the amount of deformation when the chain is pressed or stretched by calipers or the like, and the dimensions between the chain rollers that make up the chain, so as to confirm whether the chain has elongated or not, and it is impossible to remotely detect the chain. elongation

Method used

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  • Chain extension detection device of passenger conveyor
  • Chain extension detection device of passenger conveyor
  • Chain extension detection device of passenger conveyor

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Experimental program
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no. 2 Embodiment approach

[0104] Image 6 It is an explanatory diagram of main parts of the chain elongation detection device of the second embodiment.

[0105] The second embodiment differs from the first embodiment in that it is configured not to detect the rotation of the teeth of the sprocket, but to detect the rotation of the teeth of a disc-shaped detection piece that rotates integrally with the sprocket.

[0106] This reduces the possibility of missing teeth without applying a load to the detection piece, improves maintainability, and enables the detection piece to be arranged at a certain distance from the sprocket, thereby reducing the influence of oil stains and the like.

[0107] Such as image 3 As shown, the chain elongation detection device 10 of the embodiment includes a first sensor unit 11 and a second sensor unit 12 .

[0108] In this case, the first sensor unit 11 is provided to detect the rotation of the teeth of the disk-shaped detection piece 21 having a plurality of teeth that ...

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PUM

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Abstract

The invention relates to a chain extension detection device of a passenger conveyor, which can accurately detect the extension of a chain even in a long distance. According to the embodiment, the chain extension detection device of the passenger conveyor comprises a first sensor unit that detects a rotation state of one of a pair of sprockets on which a chain is erected and outputs a first rotation detection signal; a second sensor unit that detects the rotation state of the other sprocket and outputs a second rotation detection signal; and a control part that detects the extension of the chain on the basis of the difference between the phase of the first rotation detection signal and the phase of the second rotation detection signal.

Description

[0001] This application is based on Japanese patent application 2020-131993 (filing date: August 3, 2020), and enjoys the priority of this application. This application incorporates the entire content of this application by reference. technical field [0002] Embodiments of the present invention relate to a chain elongation detection device of a passenger conveyor. Background technique [0003] Conventionally, in passenger conveyors, a plurality of steps are connected endlessly by a step chain. Then, the step chain is driven by the drive of the motor connected via the sprocket, the drive chain, and the speed reducer, and the steps are rotated (circulated) and moved. In addition, the moving handrail is driven by the handrail drive chain. These chains elongate due to years of use. In this way, when the chain elongates (slacks), the engagement between the chain and the sprockets deteriorates. [0004] Therefore, it is necessary to carry out maintenance and inspection work t...

Claims

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Application Information

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IPC IPC(8): B66B27/00B66B25/00
CPCB66B27/00B66B25/006
Inventor 岩井俊宪
Owner TOSHIBA ELEVATOR KK