Design of A Portable Elevator Balance Coefficient Test Device

The balance coefficient of the traction drive elevator must meet the requirement of 0.4-0.5. In the daily use of the elevator. If the lift car is not decorated, increase or reduce the number of counterweights. The balance coefficient of the elevator will not change significantly. According to the provisions of the elevator inspection specification TSG T7001-2009, the elevator balance coefficient test method is “current load method”. This method needs to carry heavy objects for many times. Under different load conditions, measure the current value of the elevator's up and down motors. The curve of current and load is formed by fitting, and its intersection point is the value of balance coefficient. This paper designs and studies a portable elevator balance coefficient measuring device. Its shape size is small, light weight, easy to carry, easy to operate, high efficiency. It can reduce the labor intensity, reduce the operation time, the measurement data and the error is small, improve the accuracy of the measurement value.