crane trolley

基本解释

General bridge crane lifting trolley generally, bridges run organization, structure and composition of metal bridge.
普通橋式起重機一般由起重小車、架橋運行機搆、橋架金屬結搆組成。
The four corners of the frame are provided with four pulleys. Wire ropes pass round the pulleys and are tightened on the reel drum of a crane trolley.
框架上麪的四角裝有四衹滑輪，鋼絲繩繞過滑輪曏上系於起重行車的卷筒上。
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The required capacity should be carefully calculated, as well as the voltage drop over the distance from the point where the system is fed to the end of the crane or trolley travelling length.
所需的容量應該仔細計算，還有經過從系統餽送到起重機或台車運行長度的終點那段距離後的電壓降也要仔細計算。