Determining parameters of rotary skids for bases of powered support units

The article presents the studies into the interaction between the bases of powered support units and seam floor rocks. It is found that when the floor rocks are very soft and when the bases indent or plough into the seam floor during advance of the powered support units, it is necessary that the pressure at the toe of the base is minimal. The effective use of powered supports with solid rigid bases in the conditions of soft floors is possible only in combination with devices for lifting the bases of the powered support units when they are advanced. Reduction of the pressure exerted on the floor by the base divided into elements (skids) can be achieved if the base toe has devices for turning their leading edge. This can be achieved by installing rotary skids. The design of a rotary base skid is proposed, which ensures advance of the powered support unit without ploughing into the seam floor. The power and design parameters of the rotary skids, which allow removal of the powered support unit pressed into the floor, and the technical requirements for the design of the rotary skid, which increase efficiency of the powered support in the conditions of weak floor, are determined. The lift angle of the rotary skid toe to enable advance of the powered support unit without ploughing of the base into the seam floor and the rotation angle of the skid, which ensures removal of the powered support units pressed into the floor, are found. The criteria for the use of powered supports are determined with regard to the indentation resistance of the floor rocks and to the stress in the floor later under shearing.

Turuk Yu. V., Sysoev N. I., Lugantsev B. B., Streltsov S. V., Bogomazov A. A. Determining parameters of rotary skids for bases of powered support units. MIAB. Mining Inf. Anal. Bull. 2021;(9):113-121. [In Russ]. DOI: 10.25018/0236_1493_2021_9_0_113.

Yu.V. Turuk¹, Dr. Sci. (Eng.), Assistant Professor, Professor, e-mail: uraturuk@mail.ru,
N.I. Sysoev, Dr. Sci. (Eng.), Professor, Platov South-Russian State Polytechnic University (NPI), Novocherkassk, Russia,
B.B. Lugantsev¹, Dr. Sci. (Eng.), Assistant Professor, Professor,
S.V. Streltsov¹, Cand. Sci. (Eng.), Assistant Professor,
A.A. Bogomazov¹, Cand. Sci. (Eng.), Assistant Professor,
¹ Shakhty Road Institute, Branch of the Platov South-Russian State Polytechnic University (NPI), Shakhty, Russia.

Yu.V. Turuk, e-mail: uraturuk@mail.ru.

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