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楼主 |
发表于 2007-5-21 17:33:05
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来自: 中国上海
谢谢cdxwg.最好有这种装置的图纸或者照片。还有,如果能够说服业主,这个是不需要的?( ]$ F2 z$ c, ], f! z1 |
以下是他们给的技术指导书中关于这个装置的描述:3 T6 ?! `; S. L6 b: f
3.3.8 Hooks and hook blocks% J/ A# Y+ P4 \$ S8 D! v% h4 i! f
The hooks shall be made of forged steel and shall swivel on antifrication bearings arranged to exclude dirt and equipped for lubrication. Hook shall have a locking device which, when engaged,will lock the hook in the desired orientation.
5 S# A. u( F, E Hook blocks shall be constructed from rolled steel and have close fitting guards.2 p+ g. H5 @! F1 }2 `4 C' T
谢谢大家积极讨论了。 |
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