| 摘要 |
A reaction arm for a power-driven torque intensifier having a housing with an axis, a torque intensifier unit and a switching device for switching the torque intensifier unit between high speed/low torque and low speed/high torque, is configured for operating the switching device so that when the reaction arm is placed in a first position, the torque intensifier unit is switched to high speed/low torque and the reaction arm is usable as a handle by an operator, and when the reaction arm is placed in a second position the torque intensifier unit is switched to low speed/high torque and the reaction arm can abut against a stationary object since the high torque can not be absorbed by the operator.
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