Experimental research design elements of wedge clamping device

In order to define optimal parameters of the drilling pipes wedge holderbats and verify the results of the theoretical researches the experimental studies of the retention impact of some parameters as well as impact on the stressed state and deformation of the drilling pipe in the clamp zone. These parameters include clamping jaws incision type, wedge inclination angles, pipe wrapping angles of the clamping jaws etc.