| 摘要 |
FIELD: load lifting facilities. SUBSTANCE: device has outer frame 1 with screw clamps 15 for securing the device on parapet stones of repaired or erected building. Inner frame 4 is installed inside outer frame on hinge supports 12, 13 for turning at round vertical axle. Guides 16 for wheels of load lifting trolley 6 are mounted on inner frame. Widening members 17 are made in lower portion of guides. Butt-joined to outer frame are right-hand beam 2 and left-hand beam 3 connected with vertical crossmembers of outer frame by braces 10. Counterweights are mounted on rear ends of crossmembers. Lifting device is made completely dismountable, to be assembled at place of installation, compact, easy to operate, and convenient in use. It permits dispensing with lifting cranes and hoists. EFFECT: enlarged operating capabilities, increased efficiency. |
