Principle of operation of hydraulic power tongs

A large and heavy workload for operators during well workovers is the loading and unloading of pipe and threading of drilling tools. In the past, pipe wrench or chain wrench has been used, which is not only laborious but also dangerous.

Hydraulic power clamp is a mechanical loading and unloading threading tool operated by the power of well dressing machine, which can reduce the labor intensity of well dressing workers and avoid or reduce the occurrence of injury accidents. At the same time, hydraulic power pliers improve the torque of pipe and drilling tool threads, reducing the occurrence of pipe and drilling tool up and down drilling accidents.

The working principle of the hydraulic power tongs is to transfer the power of the well dressing machine to the hydraulic motor of the hydraulic power tongs through the stroke reducer, and then through the secondary or primary deceleration, so as to make the open gear jaws of the well dressing machine rotate to produce two speeds, high and low, so as to drive the tubing (drilling bit) to rotate. When the open gear rotates, the plate holder does not rotate under the braking effect of the brake hammer, so that the open gear and the palate plate holder have relative motion. In this way, the two rollers of the palate plate will climb up the slope, forcing the jaws on the crotch plate to move toward the center of the pipe (drilling tool) until it bites into the pipe (drilling tool), and then it will lock with the open gear to drive the pipe (drilling tool) to rotate together.