DIGITAL TORQUE WRENCH Russian patent published in 2016 - IPC G01L5/24 B25B23/14 

FIELD: instrument making.

SUBSTANCE: invention relates to hand tools, namely to torque wrenches for tightening with calibrated torque of threaded connections, and can be used in machine building. Digital torque wrench comprises torque sensor, output, via amplifier connected to information input of analogue-to-digital converter (ADC). Information outputs of ADC are connected to data inputs of first memory register, by outputs connected to inputs of indication unit. Device contains turning angle sensor, memory unit, output connected to input “Record” of first memory register and S-input of trigger. Trigger R-input is connected to R-stroke of first memory register and via control button is connected to bus of “Logic unit voltage”, and by output through indicator is connected to common power bus. Posed technical result is achieved by fact that switch is equipped with second memory register, pulses counter, digital comparator and element “AND”, and data outputs of second memory register are connected to first inputs of digital comparator, second inputs connected to information outputs of analogue-to-digital converter, and by output to first input of “AND” element, and by second input connected to angle transducer output, and by output to pulses counter data input, mounting R-input connected to trigger R-input and by data outputs to inputs of memory unit.

EFFECT: expansion of technological capabilities of key by creating capabilities for threaded connections tightening with key in several stages with displacing key on threaded joint.

1 cl, 1 dwg