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High-precision encoder and installation structure thereof on traction motor

A high-precision encoder and traction technology, applied in the direction of using electric/magnetic devices to transfer sensing components, electromechanical devices, structural connections, etc., can solve problems such as complex structures, and achieve high precision, high reliability, and simple structure Effect

Pending Publication Date: 2019-11-22
SHANGHAI GIE EM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem of "a kind of dual-coded high-precision magnetic encoder and motor" disclosed by the Chinese utility model patent authorization announcement number CN208567927U is that it is composed of two sets of magnetic bodies and has a complicated structure.

Method used

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  • High-precision encoder and installation structure thereof on traction motor
  • High-precision encoder and installation structure thereof on traction motor
  • High-precision encoder and installation structure thereof on traction motor

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] see Figure 1 to Figure 5 , the high-precision encoder shown in the figure includes a gear ring 4 and a detection device 2, and a series of induced teeth 4A, 4B are provided on the inner ring and outer ring of the gear ring 4. A series of induced teeth 4A, 4B are provided with tooth gaps between adjacent induced teeth.

[0020] The number of teeth of the induced teeth 4A on the inner ring of the ring gear 4 is not equal to the number of teeth of the induced teeth 4B on the outer ring of the ring gear 4, so as to achieve precise positioning of the magnetic poles of the traction motor rotor.

[0021] At least one special-shaped tooth 5A, 5B for determining the zero position is provided on the inner ring of the ring gear 4 and the outer ring of the ring gear 4 to determine the zero position. The tooth shape of the special-shaped tooth 5A ...

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Abstract

The invention discloses a high-precision encoder. The high-precision encoder comprises at least one gear ring and a detection device, a series of sensed teeth are respectively arranged on the inner ring and the outer ring of the gear ring, the detection device is provided with two sensors, one sensor correspondingly detects the positions of the sensed teeth on the inner ring of the gear ring, andthe other sensor correspondingly detects the positions of the sensed teeth on the outer ring of the gear ring. The invention further discloses an installation structure of the high-precision encoder on a traction motor. Compared with the prior art, the high-precision encoder and the installation structure thereof on the traction motor are high in precision, simple in structure, free of excitationloss risk and not prone to damage.

Description

technical field [0001] The invention relates to the technical field of encoders for elevators, in particular to a high-precision encoder and its installation structure on a traction motor. Background technique [0002] The encoder used in the traction machine includes a sensing device and an induced gear ring. The induced gear ring is installed on the rotor. The outer circumferential surface of the induced ring is processed with a number of teeth. The sensing device performs non-contact to the induced gear ring. Scanning to measure the magnetic pole position and rotational speed of the rotor. This technology solves the problem that it is difficult to install a photoelectric encoder on a shaft-fixed permanent magnet synchronous traction machine. However, this technology has the following problems: poor precision, far less than the precision of the photoelectric encoder, and the gear ring is easily damaged, rusted, and foreign objects make the reliability poor. [0003] In a...

Claims

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Application Information

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IPC IPC(8): G01D5/12G01D11/00H02K11/21
CPCG01D5/12G01D11/00H02K11/21
Inventor 屈义许志华
Owner SHANGHAI GIE EM
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