Determination of Turn Radius of Pneumatic Puncher under Change of Its Motion Path in Soil
B. B. Danilov1, B. N. Smolyanitsky1,2, A. I. Chanyshev1,3, D. O. Cheshchin1
1Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630091 Russia
2Siberian State University of Transport, Novosibirsk, 630049 Russia
3Novosibirsk State University of Economics and Management, Novosibirsk, 630091 Russia
Keywords: Скважина, пневмопробойник, отклоняющее устройство, траектория, радиус поворота, грунт, отклоняющее усилие, Hole, pneumatic puncher, deflector, trajectory, turn radius, soil, deflecting force
Abstract
In order to ensure accurate hole-making in soil, it is required to adjust motion path of pneumatic puncher by deflecting its rear body relative to longitudinal axis. The structural layout of the path control mechanism, which allows upgrading series-production pneumatic punchers, is presented. The solution of problem on forces required to change the pneumatic punch path in soil is given. Soil body is considered as a rigid-plastic medium, and the deflector is assumed as a nondeformable body. The problem is solved in two stages: penetration of the deflector in soil and motion of the pneumatic puncher with the rear deflected at a certain angle in soil. The loads applied to the rear for changing pneumatic puncher path in soil and the turn radius under deflecting force are determined.
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