日本无遮挡真人祼交视频_国产精品久久久久久成人影院_亚洲AV成人精品一区二区三区_久久久久久精品免费免费WE

What are the functions of hydraulic power tongs?

Hydraulic power tongs is a kind of workover tool for mechanically lifting and unscrewing tools operated by the workover rig. It has obvious advantages and is easy to use.

In the workover process, the large and heavy workload of the operators is the screwing of the upper and lower pipe and drilling tools. In the past, pipe tongs or chain tongs have been used, which is not only labor-intensive but also dangerous. Hydraulic power tongs are mechanical lifting and unloading tools operated by the workover rig, which can greatly reduce the labor intensity of workover workers and avoid or reduce the occurrence of injury accidents. At the same time, hydraulic power tongs increase the torque of pipe and drill wire fasteners and reduce the occurrence of pipe and drill trip accidents. The working principle of the hydraulic power tongs is to transfer the power of the workover rig to the hydraulic motor of the hydraulic power tongs via a stroke reducer, and then reduce the speed by two or one stage, so that the open gear of the tong head rotates to generate two high and low speeds, thereby driving The pipe (drill) rotates. When the open gear rotates, the plate frame does not rotate first under the braking action of the brake hammer, so that there is a relative movement between the open gear and the stern plate frame. In this way, the two rollers of the stern plate will climb the slope and force the jaws on the stern plate to move toward the center of the pipe (drilling tool) until they bite the pipe (drilling tool), and then engage Drive the pipe (drilling tool) together.