Upper buckle torque detecting control device of oilfield drilling preparing operation power tongs

The utility model relates to a torque detection controlling device, in specific to a torque detection controlling device of the hydraulic power claw for the oil-field drilling and repairing operation, which comprises a torque signal acquiring mechanism that is arranged on the drilling and repairing operation vehicle, an upper latching coil quantity acquiring mechanism, a main controller and a torque controlling mechanism. Through detecting the pressure signal, flow amount signal and flow velocity signal in the hydraulic power claw hydraulic system circuit on the drilling and repairing vehicle and under the circumstance of in-directing contact the hydraulic power claw, the torque signal, upper latching coil quantity signal and rotation velocity signal are acquired. Adopting the indirect measuring way to acquire the signal, the utility model is characterized in that the device does not make any changes to the hydraulic power claw that is in terrible condition and does not acquire the required signal directly from the hydraulic power claw, which improves the safety, adaptability and reliability of the torque detection controlling device and the hydraulic power claw as well as the whole system. The utility model is beneficial to improve the working efficiency and working quality and reduces the consumption so as to improve the economic benefit.