Digital display torque wrench with wireless transmission function

The utility model relates to a torque wrench which exerts tightening moment to a thread pair in a quantitative manner and displays moment value in a real-time manner, in particular to a digital display torque wrench with wireless transmission function, which comprises a ratchet wheel head 1, a sensor 2, a measuring circuit 3, an operating keystoke 4 and a wrench handle 5. The measuring circuit mainly comprises a highly integrated singlechip; a signal amplifier, an analog-to-digital converter and a display drive circuit are integrated in the singlechip; in addition, the measuring circuit also comprises a battery voltage testing circuit, an upper and lower limit warning circuit, a unit converting circuit and a radio communication circuit. By adopting a highly integrated singlechip system, the circuit of the digital display torque wrench is simple and the cost is low, and the use is more convenient and more reliable at the same time by adopting advanced Zigbee wireless communication technology.