Abstract
Abstract
The paper describes the mode of functioning of the reverse action hydraulic hammer with piston driven in the positive direction by the energy of air compressed during cocking of the piston by the hydraulic drive. The authors discuss various control circuits of such hydraulic hammers, control sensors, capabilities of the circuits, as well as their advantages and disadvantages.
Reference13 articles.
1. Analysis of modern trends in subsoil borehole drilling;Danilov;J. Fndamemnt. Appl. Min. Sci.,2014
2. The technology improvement and development of the new design-engineering principles of pilot bore directional drilling;Shadrina;IOP Conf. Series: Earth and Environmental Science,2016
3. Equipment for trenchless laying of underground communications on the basis of pneumatic punches and the prospects for its development;Dobroselsky;ROBT,1996