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1. (WO2017171597) A COUNTERWEIGHTED ROPED HYDRAULIC LIFTING SYSTEM

Pub. No.:    WO/2017/171597    International Application No.:    PCT/SE2016/050269
Publication Date: Fri Oct 06 01:59:59 CEST 2017 International Filing Date: Fri Apr 01 01:59:59 CEST 2016
IPC: B66B 9/04
F15B 11/036
F15B 11/22
F15B 15/14
F15B 15/20
Applicants: SAAB AB
Inventors: LANDBERG, Magnus
Title: A COUNTERWEIGHTED ROPED HYDRAULIC LIFTING SYSTEM
Abstract:
The present invention regards a counter weighted roped hydraulic lifting system (101) comprising: a rope drive (109) coupled to a lifting member (115); a hoist arrangement (103) comprising a rope guide pulley arrangement (105); the rope drive (109) is coupled to a piston rod (117) of a fluid actuator arrangement (119); a first engagement and disengagement device (255') of a first piston body (245') and a second engagement and disengagement device (255'') of a second piston body (245''); the respective first (255') and second (255'') engagement and disengagement device is configured to clamp around the piston rod (117) for engagement; the piston rod (117) partly or entirely features a counterweight mass and being configured to balance said lifting member (115). The present invention also relates to a method for raising and lowering a lifting member of a counterweighted roped hydraulic lifting system.