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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?
7 W& H8 f. F& d2 I0 ~7 A8 x3 L) A以下是他们给的技术指导书中关于这个装置的描述:
_2 S9 R+ Q) d3.3.8 Hooks and hook blocks
( x. D& I, M3 x( w 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.
% G; T' d1 E! f8 H0 U, |4 `! { Hook blocks shall be constructed from rolled steel and have close fitting guards.
6 h/ X$ m4 F3 c3 e4 `% u谢谢大家积极讨论了。 |
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