| 摘要 |
The intermediate body 2, which has an annular shape and contributes to the formation of the roof of its base container 1, is solidly attached to its upper body 3. The means permitting the upper body 3 and the intermediate body 2 to move by sliding on one or more columns 5 solidly attached to the base container 1 are constituted by a winch 9 carried by a framework 6, 7 which, solidly attached to the base container 1, actuates a cable 10, one of the ends of which bears on the drum of this winch and which, after passing over return pulleys which are carried, ones 13, 15 by the fixed framework 5, 6 and the other 14 by the framework 8, 12, 16 of the upper body 3, is fixed by its other end to this framework 8, 12, 16. <IMAGE>
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