Permanent magnet variable frequency integrated driving device and scraper conveyor

By combining a U-shaped layout with a torque limiter module, the problems of excessive axial size and single transmission ratio in permanent magnet variable frequency integrated drive devices are solved. This enables the drive device to adapt to confined spaces and protect itself under extreme working conditions, thereby improving the applicability and reliability of the drive device.

CN122276353APending Publication Date: 2026-06-26CHINA COAL TECH & ENG GRP SHANGHAI
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA COAL TECH & ENG GRP SHANGHAI
Filing Date
2026-05-25
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing permanent magnet variable frequency integrated drive devices have excessively large axial dimensions, a single transmission ratio, and lack effective overload protection, making them difficult to adapt to complex working conditions in coal mines, especially the confined space and extreme impact conditions in thin coal seams and steeply inclined coal mining faces.

Method used

The permanent magnet variable frequency integrated drive unit with a U-shaped layout includes a motor module, a variable frequency controller module, a parallel shaft gear reducer module, a planetary gear reducer module, and a torque limiter module. The combination of the parallel shaft gear reducer module and the planetary gear reducer module forms a U-shaped transmission path, and the torque limiter module provides overload protection, enabling a wide range of transmission ratio adjustment.

Benefits of technology

It effectively compresses the axial dimensions of the drive unit, adapts to different speed and torque requirements, can cope with extreme impact conditions, provides comprehensive overload protection, and improves the applicability and reliability of the drive unit.

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Abstract

This invention relates to a permanent magnet variable frequency integrated drive device and a scraper conveyor for driving the sprocket rotation of the scraper conveyor. The device includes: a motor module for providing driving power; a variable frequency controller module electrically connected to the motor module for controlling the operation of the motor module; a parallel shaft gear reducer module whose input end is drively connected to the output end of the motor module for changing the transmission path; and a planetary gear reducer module whose input end is drively connected to the output end of the parallel shaft gear reducer module, and whose output end is drively connected to the sprocket. The input axis of the parallel shaft gear reducer module is parallel to and offset from its output axis, so that the motor module, the parallel shaft gear reducer module, and the planetary gear reducer module form a U-shaped transmission path. The scraper conveyor includes the above-mentioned drive device.
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