| 摘要 |
An electromechanical releasing torque wrench which includes an electronic controller (50) and transducers (32) or (34) to measure and actuate a release of the wrench with physical, audible and visual signals. In operation, the user sets the desired torque-release-point on the keypad (60) of the electronic controller and then attaches the wrench to a workpiece with the ratchet means which pivotally protrudes from the enclosure (20). The user tightens the workpiece, normally a threaded fastener, and the force sensing means attached to the ratchet (28) or (62) produce an analog signal to the controller. When the release point is reached the controller sends a signal to a solenoid (44) or linear actuator (66) creating linear mechanical motion causing the mechanical advantage locking latch and trigger means to disconnect the ratchet producing a momentary reduction of force felt by the operator and an audible clicking sound as the ratchet strikes the enclosure.
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