Hydraulic tong protection device

The utility model discloses a hydraulic tong protection device and belongs to the technical field of petroleum drilling, oil extraction and workover rigs. A Z-shaped stroke valve fixing rack is connected with an inclined plate; two fixing rack fixing holes are distributed in the Z-shaped stroke valve fixing rack; two stroke valve fixing holes are distributed in the inclined plate; a lengthening rod is connected with a stop iron; two fixed bolts are connected to the lengthening rod; a safety gate is connected to the stop iron; a jackscrew and two vertical adjusting bolts are connected to the stop iron; a two-position four-way hydraulic control valve is of a valve plate type; the front of the two-position four-way hydraulic control valve is correspondingly communicated with a valve opening of a valve plate; the back of the two-position four-way hydraulic control valve is correspondingly communicated with a valve opening of a three-position four-way hand-operated direction valve; the two faces of the two-positio