What is hydraulic power tong working principle?

The working principle of the hydraulic power clamp is that the power of the workover rig is transferred to the hydraulic motor of the hydraulic power clamp through the stroke reducer, and then through two or one deceleration, the opening gear of the clamp head rotates, resulting in high and low rotational speeds, thus driving the pipe tool (drilling tool) to rotate. When the opening gear rotates, the plate frame does not rotate under the braking action of the brake hammer, so that there is a relative motion between the opening gear and the palate plate frame. In this way, the two rollers of the palate plate will climb the slope and force the clamp teeth on the crotch plate to move toward the center of the pipe tool (drilling tool) until they bite the pipe tool (drilling tool), and then drive the pipe tool (drilling tool) to rotate together with the opening gear.