Mounting method of encoder of split synchronous high-voltage motor

Abstract

The invention discloses a mounting method of an encoder of a split synchronous high-voltage motor. The mounting method comprises the following steps of 1, connecting a synchronous motor dummy shaft (1) with the motor (2), 2, preliminarily fixing an encoder end cover (3) with a housing of the motor (2), 3, fixing the synchronous motor dummy shaft (1) with a coupler (4), 4, connecting and fixing the encoder (5) with the encoder end cover (3), 5, checking the concentricity of a small shaft of the encoder (5) and the synchronous motor dummy shaft (1), and 6, finally fixing the encoder end cover (3) with the motor (2). The mounting method of the encoder of the split synchronous high-voltage motor eliminates displacement caused by lifting of a rotor spindle, and vertical and horizontal deviations during high-speed operation, greatly reduces the stop time of a production line and purchase of unnecessary spare parts, saves the production cost, and improves the equipment efficiency.

Description

Technical field [0001] The invention relates to a method for installing a split type synchronous high-voltage motor encoder. Background technique [0002] The main motor of Sendzimir mill adopts 6000KW 4-pole high-voltage three-phase split synchronous motor. A total of 6 encoders are installed. The connection method is directly installed on the rotor shaft, such as external factors or motor body reasons (passed when restarting after shutdown When the oil-lifting motor raises the rotor shaft to a certain height), the concentricity deviation is too large, the left and right shaking is obvious, and the encoder life cycle is only about 3 months. Under normal circumstances, it will cause low measurement accuracy (large speed fluctuations, especially In the case of low speed), the mechanical position of the rotor is easy to lose, the excitation current is too large, which directly affects the production output and production efficiency, and the encoder is seriously damaged. Summary of...

AI Technical Summary

Problems solved by technology

[0002] The main motor of the Sendzimir rolling mill adopts a 6000KW 4-pole high-voltage three-phase split synchronous motor, and a total of 6 encoders are installed. The connection method is directly installed on the dummy shaft of the rotor, such as external factors or motor body reasons (by When the oil lift motor lifts the rotor shaft to a certain height), the concentricity deviation is too large, and the left and right shaking is obvious, and the life cycle of the encoder is only about 3 months, which generally leads to low measurement accuracy (the speed fluctuates greatly, especially In the case of low speed), the mechanical position of the rotor is easily lost, the excitation current is too large, which directly affects the production output and production efficiency, and the encoder is seriously damaged.

Images