The tower crane is mainly composed of vertical tower, horizontal tower, tower tower and balance arm, as shown in Figure 3.67.
塔式起重机主要由竖直塔身、水平塔臂、塔顶和平衡臂等主要部件组成，如图3.67所示。
The paper presents a designing method for the tail—end balance weight of the swing—arm of the "Crane" type portal cranes.
本文向读者推荐港口鹤式起莺机摇臂尾端平衡重设计方法。
Balance weight block installation position is not accurate, will cause the boom and the balance arm balance torque deviation is too large, easily lead to instability of the tower crane.
平衡重块安装位置不准确，会造成起重臂与平衡臂平衡力矩偏差过大，轻易造成塔吊失稳。
By the terms of the calculated result we found a rule that all this type tower crane don't need to estimate the fatigue life of balance beam.
根据疲劳寿命结果得出该类型式起重机起重臂的设计不用考虑疲劳问题。
The present invention discloses a crane comprising a bipod and a balance weight hoisting device.
本发明公开了一种起重机，包括人字架和配重提升装置；
The present invention discloses a crane comprising a bipod and a balance weight hoisting device.
本发明公开了一种起重机，包括人字架和配重提升装置；
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