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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?. `# |! O% r0 ~! o, v
以下是他们给的技术指导书中关于这个装置的描述:5 I- t: V& F3 ?- k' U8 z2 r
3.3.8 Hooks and hook blocks
* b0 q# ]& P m5 [( D4 ]/ P/ @ 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.' b) v: ]* s3 g3 X' ]) T! j1 \- `
Hook blocks shall be constructed from rolled steel and have close fitting guards.
8 j% U3 K9 ?' f" w7 B/ |谢谢大家积极讨论了。 |
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