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Speed detection device for escalator

A speed detection, escalator technology, applied in escalators, transportation and packaging, etc., can solve the problems of inaccurate speed feedback, large axial vibration of the escalator's main shaft, sensitive to the use environment, etc., to achieve high feedback accuracy, installation and maintenance. Simple and convenient, solve the effect of difficult maintenance

Pending Publication Date: 2018-10-02
上海昶屹机电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] First, the axial vibration of the main shaft of the escalator is large, and the photoelectric encoder installed at the end of the main shaft has the risk of fragmentation of the internal code disc due to vibration;
[0005] Second, because the traditional photoelectric encoder can only be installed at the end of the main shaft, when the escalator is installed on site, it is difficult for manpower to reach the end of the main shaft through the inspection cabin. Once the encoder fails, it will take a lot of work Manpower and material resources to carry out maintenance;
[0006] Third, use the through-beam photoelectric detection switch to detect the number of teeth of the sprocket to calculate the running speed and direction of the escalator. Due to the limitation of the structure of the escalator, the number of teeth of the sprocket is generally small, so the accuracy of the running speed of the escalator is low. , the speed feedback is not accurate;
[0007] Fourth, due to the limitations of its principle, the through-beam photoelectric detection switch cannot tolerate oil and dust, and the use environment is very sensitive

Method used

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  • Speed detection device for escalator
  • Speed detection device for escalator
  • Speed detection device for escalator

Examples

Experimental program
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Effect test

Embodiment 1

[0035] The invention provides a speed detection device of an escalator, which includes a sensing device and a device to be sensed that cooperate with each other;

[0036] Among them, the induced device is installed on the main shaft of the escalator, which can rotate synchronously with the main shaft of the escalator; the sensing device is installed on the static part of the escalator, or on the mounting bracket extended from the static part, and is used to sense that the induced device rotates with the main shaft to generate control Incremental and / or absolute value signals required by the system.

[0037] Sensing device 10 such as figure 1 As shown, it includes a magnetoresistive sensor 11, a signal processing circuit 12, and a drive output circuit 13; the magnetoresistive sensor 11 is used to sense the angle change of the magnetic pole or gear in the induced device, and generate a corresponding induction signal (the induction signal is a sine signal or cosine signal), the ...

Embodiment 2

[0047] Embodiment 2. In this embodiment, the installation position of the sensing part 21 is different from that of Embodiment 1. Correspondingly, the position of the sensing device 10 is also adjusted, and the rest are the same as Embodiment 1.

[0048]The induced device 20 includes two bearing parts 22 of a semi-circular structure, and a mounting part 25 extends from each bearing part 22; the two bearing parts 22 can be assembled into an integral ring through the connection of the two mounting parts 25 structure;

[0049] The end surface of the bearing part 22 is provided with an annular sensing part 21, and the sensing part 21 has a continuous tooth shape or a magnetic pole, and the sensing part 21 is provided with a reference point of the sensing device 10;

[0050] The carrying part 22 and / or the mounting part 25 is provided with a mounting hole 24 adapted to the size of the main shaft of the escalator;

[0051] The sensing device 10 is disposed opposite to the ring-shap...

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PUM

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Abstract

The invention provides a speed detection device for an escalator. The speed detection device comprises a sensing device and a sensed device which are matched with each other; the sensed device is configured to synchronously rotate with a main shaft of the escalator; the sensing device is used for sensing an increment signal and / or an absolute value signal required by a control system generated when the sensed device rotates along with the main shaft; furthermore, the sensed device comprises two bearing parts of semi-circular-ring structures, and a mounting part is arranged on each bearing partin an extending mode; the two bearing parts can be spliced into an integral annular structure through connection of the two mounting parts; sensing parts are arranged on the outer circumferences of the bearing parts and are provided with continuous tooth profiles or magnetic poles, and reference points of the sensing device are arranged on the sensing parts; mounting holes matched with the main shaft of the escalator in size are formed in the bearing poarts and / or the mounting parts; and the sensing device is arranged opposite to the outer circumferences of the bearing parts of the sensed device. The speed detection device has the advantages of being convenient to install and maintain and high in feedback precision.

Description

technical field [0001] The invention belongs to the technical field of elevator detection devices, and in particular relates to a speed detection device of an escalator. Background technique [0002] Escalators generally use the driving device and sprocket to drive the main shaft to move. For escalators under this structural system, it is generally not possible to use the encoder to directly measure the running speed of the driving device to judge the running speed and direction of the escalator, because the drive sprocket exists. The risk of fracture and dislocation, so the way to measure the running speed and direction of the escalator is to install a traditional photoelectric encoder at the end of the main shaft or install two through-beam photoelectric detection switches to detect the number of teeth of the sprocket to measure the escalator. running speed and direction. [0003] But also there is following deficiency in the escalator speed detecting device of above expr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B29/00B66B25/00
CPCB66B25/00B66B29/00
Inventor 付世强
Owner 上海昶屹机电科技有限公司