| 摘要 |
PROBLEM TO BE SOLVED: To provide a general hoist platform, wherein a shaft elevator is provided. SOLUTION: This hoist platform is an elevated floor compensator composed of two horizontal vehicle supports 5 and 6 including supporting elements 8 for vehicle wheels, hoisting elements 10 and 11 for hoisting the vehicle supports 10 and 11 in synchronization, and slippage resistant plate members 25 and 26. A floor compensator for giving a recess for the vehicle support inside a foundation or a support to cover a cavity, and a shaft elevator 13 movable in a longitudinal rail between the two vehicle supports are included. When the hoist platform is protruded or retreated, to completely cover not only the vehicle supports 5 and 6 but also the shaft elevator 13, a cavity 30 for partially containing at least the lowered shaft elevator 13 is provided in a continuos footing, and the floor compensators 25, 26 and 31 are designed to cover this cavity 30 as well when the vehicle supports 5 and 6 are in raised positions.
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