crane trolley

基本解释

General bridge crane lifting trolley generally, bridges run organization, structure and composition of metal bridge.
普通桥式起重机一般由起重小车、架桥运行机构、桥架金属结构组成。
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.
框架上面的四角装有四只滑轮，钢丝绳绕过滑轮向上系于起重行车的卷筒上。
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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.
所需的容量应该仔细计算，还有经过从系统馈送到起重机或台车运行长度的终点那段距离后的电压降也要仔细计算。