| 摘要 |
FIELD: process engineering.SUBSTANCE: invention relates to lifting assembly systems for lifting of, for example, weights in theatre performances. Proposed system comprises conical drum with constant-diameter section and increasing-diameter section, rope control system with rope fitted in one layer in flute, intake device for tube with fixation at beam to allows said tube to displace relative to said beam and to be fixed thereto, rope holder and rope sag detector to retain the rope around the drum after loss in rope tension, horizontal low-profile rope regulator to adjust rope length, brake, rotary tilt lever turning at tube one end to direct the ropes at preset tilt angle and/or pull-type load transducer connected between the tube and drum to measure change in load force and to adjust weight displacement.EFFECT: reliable passage of ropes, uniform rope wear by friction, lower noise during performance.24 cl, 37 dwg |
