Double-door single-control safety protection device for open type hydraulic power tongs

A double-door single-control safety protection device of an open type hydraulic power tong comprises a hydraulic motor, a power tong body, a left safety door, a right safety door, an ejector rod assembly, a swing plate assembly, a connecting cable assembly, a push-pull cable flexible shaft and a spring reset door control valve, and the ejector rod assembly and the swing plate assembly are installed on the inner side of the right safety door body. The top of an ejector rod on the ejector rod assembly abuts against a side plate of the left safety door, the side face of the head of the swing plate can abut against the tail of the ejector rod, and the swing plate assembly can be driven to rotate together when the right safety door rotates. An oil inlet and an oil return opening in a valve body of the spring reset door control valve are communicated with a motor oil opening of the hydraulic motor; the swing plate assembly is connected with the spring reset gating valve through the connecting cable assembly and the