Elastic connecting device of rotary encoder

Abstract

The invention relates to an elastic connecting device of a rotary encoder. The elastic connecting device comprises a circular base, a fixing bracket and an elastic coupling; a thickness-penetrating base circular hole is formed in the center of the circular base; the fixing bracket comprises a base fixing plate, a motor fixing plate and a cylinder; the base fixing plate and the motor fixing plate are symmetrically fixed to the two ends of the cylinder; circular holes are formed in the centers of the base fixing plate and the motor fixing plate; the rotary encoder comprises a shell and an encoder shaft; the circular base is fixedly connected with the encoder shell and the base fixing plate, and after connecting, the axis of the encoder shaft, the axis of the base circular hole, the axis of the circular hole in the center of the base fixing plate, the axis of the cylinder and the axis of the circular hole in the center of the motor fixing plate coincide; and the encoder shaft penetrates through the base circular hole and the circular hole in the center of the base fixing plate to be connected with the elastic coupling. The rotary encoder and a motor spindle are stably connected, and the fine concentricity deviation between the encoder shaft and the motor spindle is effectively eliminated.

Description

technical field [0001] The invention relates to an elastic connection device of a rotary encoder, which belongs to the technical field of electromechanical equipment. Background technique [0002] Frequency converters are widely used in metallurgical enterprises. During the working process of frequency converters, the realization of the speed sensor vector control algorithm and synchronization function requires the speed feedback of the speed sensor. In the industry, rotary encoders are usually used for speed acquisition and feedback, which requires the The motor shaft and the rotary encoder are connected to realize the function of the rotary encoder; most of the AC motors in metallurgical enterprises are large-scale AC motors with a protruding shaft at the tail. It is found in actual production that when the large-scale AC motor shaft is connected to the rotary encoder, the motor shaft It is difficult to calibrate the concentricity with the encoder shaft, and because the en...

AI Technical Summary

Problems solved by technology

[0002] Frequency converters are widely used in metallurgical enterprises. During the working process of frequency converters, the realization of the speed sensor vector control algorithm and synchronization function requires the speed feedback of the speed sensor. In the industry, rotary encoders are usually used for speed acquisition and feedback, which requires the The motor shaft and the rotary encoder are connected to realize the function of the rotary encoder; most of the AC motors in metallurgical enterprises are large-scale AC motors with a protruding shaft at the tail. It is found in actual production that when the large-scale AC motor shaft is connected to the rotary encoder, the motor shaft It is difficult to calibrate the concentricity with the encoder shaft, and because the encoder is a precision device and expensive, if a hard connection is used, the encoder is easily damaged under the action of radial stress for a long time; in order to solve this problem, some technical The personnel use simple elastic connection devices such as oxygen bags to connect the motor shaft and the encoder, but in practical applications, it is found that the stability of the system cannot be guaranteed, resulting in an increase in maintenance costs. For master-slave control, it may even cause vicious accidents and cause mechanical failure. Or electrical equipment is damaged, increasing production costs and affecting normal production

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