这里的chain fall是什么意思？

DraftMan · 发表于 2009-10-12 10:55

这里的chain fall是什么意思？

yqcheng123 · 发表于 2009-10-12 11:10

链条？

278114381 · 发表于 2009-10-12 15:29

本帖最后由 278114381 于 2009-10-12 15:58 编辑

chain fall 吊装设备用的

278114381 · 发表于 2009-10-12 15:33

Chain Fall

Heavy pieces could be raised into position using hand-powered hoists called chain falls. Chain falls worked on the pulley principle, allowing one person to slowly lift hundreds of pounds. The chain falls were supported by the roof trusses and moved back and forth on a track. Bridge components could be moved about the plant on the narrow-gauge railway tracks, then hoisted into position for the next operation using the system of chain falls.

This chain fall has been used to hoist a large box girder into position for the drill press. The chain fall has a large hook on the end (small red arrow), inserted into a chain wrapped around the box girder.

278114381 · 发表于 2009-10-12 15:34

Chain Fall 手拉葫芦

SWC · 发表于 2009-10-12 17:43

Chain Fall 手拉葫芦
278114381 发表于 2009-10-12 15:34

手拉葫芦还可以用 chain block

王者到达 · 发表于 2009-10-12 18:27

学习!

[轮机] 这里的chain fall是什么意思？