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Winding and unwinding appliance for strip carrying posters, especially large ones, incorporate drive shafts, driiive mechanism, spring arrangement with coiled block
Winding and unwinding appliance for strip carrying posters, especially large ones, incorporate drive shafts, driiive mechanism, spring arrangement with coiled block
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机译:用于带状海报(特别是大型海报)的收卷和收卷装置,包括驱动轴,浮动机构,带线圈的弹簧装置
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摘要
The picture-changing appliance incorporates a strip with two vertical tubes for unwinding and winding parts (17, 23) which have drive shafts (18), a drive mechanism and at least one pre-tensioned spring arrangement (19). The spring arrangement comprises a helical spring coiled on a block with coils (20) at pre-set distances apart when untensioned, and at a radial distance from a pipe (21) enclosing the drive shaft and linked to an element
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