FIELD: mechanical engineering.
SUBSTANCE: device comprises the drive for vertical movement, vertically movable carriage, guiding column, rope-block system, and counterweight. The drive for vertical movement comprises screw and loading nut connected with the carriage positioned on the guiding column. The loading nut is detachable and has additional mechanism for disengaging it with the screw. The carriage is connected with the counterweight through a rope-block system. The mechanism for disengaging the nut with the screw is made of an electromagnet clutch connected with the end switches and system for control of fusing process.
EFFECT: enhanced efficiency.
1 cl, 1 dwg
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