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我矿井下通风设备用2台70B2－21N024扇风机（一台备用），其配套驱动电机为740r／min、570kW。近年来风机、电机运转震动逐渐增大。当停机检修时发现，因风机、空心轴与电机的同轴度超出规定值，造成联轴节内、外齿磨损。1．测量电机与风机轴心线（1）将联接电机、空心轴与风机
I mine ventilation equipment with 2 70B2-21N024 fans (a spare), its supporting drive motor 740r / min, 570kW. In recent years, fans, motor operation vibration gradually increased. When the downtime maintenance found that, due to fans, hollow shaft and the electrical coaxial beyond the specified value, resulting in coupling, the external teeth wear. 1. Measuring the motor and fan shaft (1) will connect the motor, hollow shaft and fan