Liable supporting foot of the mining longwall lining

摘要

the podporowa has linear actuator spring, which cylinder (1) is connected with a podporowu0105 (5), and to naciskowu0105 propped up. keep him quiet spring (3) of the piston (2) is rigidly secured in the lock (4) made of ksztau0142townika enclosure.the piston (2) has the shape of a cylinder tube closed at the lower end of the bottom (2a) and at the end of the upper cover (2b) of the outer flange, which is based naciskowa spring (3), and a lock unit (4) is mounted to the piston (2) by przyspawanie ksztau0142townika to dna (2a) and the turning ywy (2b) in the location of the geometric centre of ksztau0142townika axis piston (2).the cylinder (1) is connected with the actuator plate podporowu0105 (5) by the cylindrical pivot (7) about the axis perpendicular to the axis of the cylinder (1).