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) produce an analog signal which is applied to the controller. When the release point is reached the controller sends a signal to a solenoid (44) 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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