Simple G-shaped clamp

The invention relates to a simple G-shaped clamp. The simple G-shaped clamp comprises a clamp body, a movable head, a screw and a handle. The clamp body comprises a mounting portion and a clamping portion, the mounting portion is provided with a through hole, the screw penentrates the through hole, the movable head is arranged at one end of the screw right facing the clamping portion, the screw is movably connected with the other end of the screw through a pin shaft, the inner wall of the through hole is provided with an arc-shaped groove, an arc-shaped block with a thread is identical with the groove in shape and arranged in the same, the arc-shaped block is connected with the groove through a spring, the bottom of the groove is provided with a threaded hole communicated with the through hole, a stud is arranged in the threaded hole and penetrates the threaded hole and the spring to contact with the arc-shaped block, and the tail end of the stud is provided with a knob. By adopting the technical scheme, the stud is screwed by rotating the knob, and the thread of the arc-shaped block is meshed with the thread of the screw, so that the simple G-shaped clamp is locked or otherwise is unlocked. The simple G-shaped clamp is simple in structure and convenient to use.