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    • 3. 发明申请
    • System and apparatus for moving objects
    • WO2020178580A1
    • 2020-09-10
    • PCT/GB2020/050513
    • 2020-03-05
    • TREEEMAGINEERS LTD
    • COWELL, ChristopherTANNER, Elliot
    • A63G21/22
    • A trolley for lifting and/or moving a load on one or more lines and an installation and method using it are disclosed. The trolley comprises a first side plate (10) and a second side plate (12) and a plurality of sheave assemblies. Each sheave assembly includes a sheave axle (30) that includes an axle shaft (34) which projects from the first plate (10), a sheave cartridge (20) carried on the axle shaft (34) between the plates. Each sheave cartridge (20) includes a pulley wheel (22) that can rotate on a bearing (24) around an axis of the axle shaft (34). The axes of the shafts are parallel to one another. Retention fasteners (40, 42) extend thought the second plate (12) to secure the second plate (12) to the first plate (10) through the axle shafts (34). An installation comprises a trolley and a main line that extends between two fixed anchorages. In use, the main line passes between the plates (10, 12) of the trolley, whereby the main line makes contact with one or more sheave or pulley wheel (22) of the trolley whereby the trolley can be suspended from and travel along the main line.