| 摘要 |
The trolley (1) runs on wheels (20,21) supporting the powered hoist (9,10) with vertical guides (3) which move the linked arms (4) carrying the platform (5) which can move outwards and inwards. A stop (13) restricts outward movement of the platform, and handles (11) are used to move the platform. Projections (12) engage hooks (6) with trip handles (8) to hold the platform retracted. Push buttons control the vertical movements of the platform.
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