Also known as the amplitudelimit or range indicator, jib cranes general boom are linked to a range of indicators.
也称变幅限位或幅度指示器，一般的动臂起重机的起重臂上都挂有一个幅度指示器。
2
When the arm runs to the upper and lower two limit position, respectively press the lower limit switch, cut off the main control circuit, variable amplitude motor parking, to limit the role.
当臂杆运行到上下两个极限位置时，分别压下限位开关，切断主控电路，变幅电机停车，达到限位的作用。
3
By using the nonlinear cumulative fatigue damage model considering the influence of the fatigue limit and the cyclic stress amplitude, the remaining life formula of the.