Ryazanov A. The development of a hammer sampler for drilling of engineering-geological holes on the continental shelf

The hammer sampler. Investigate the conformities to action and ground the working parameters of sampler used for taking soil samples. Apparatus of theory oscillation, hydro-dynamics, experimental is planning. The mathematical description of stroke interction's process of elements "a pin-a core sampler-soft rock" is made. The model of working cycle is elaborate. The piston's motion with the motion of a pin is accordance. The results of theoretical researches were confirmed during the laboratory tests. The practical design is create, tested in industrial conditions. Quality and productivity of taking samples is raise. The sphere of use are drilling of holes.