L68A1 Mast Section Problems to be paid attention to in ensuring the stability of tower crane
The ratio of tower crane height to bottom bearing size is large, and the center of gravity of the tower body is high, the torque is large, the starting and braking are frequent, and the impact force is large. In order to increase its stability, the manufacturer of tower crane shall pay attention to the following aspects when analyzing and ensuring the stability of tower crane:
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Overloading
Different types of cranes usually use lifting moment as the main control. When the working range is increased or the weight exceeds the corresponding rated load, the overturning moment of the weight exceeds its stable moment, which may cause tower crane collapse.
Two, inclined crane
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When the weight is lifted obliquely, its overturning moment will be increased, horizontal and vertical components will be generated at the lifting point, and an additional overturning moment will be generated at the supporting point at the bottom of the tower crane, thus reducing the stability coefficient and causing the collapse of the tower crane.
Three, foundation
The tower crane foundation is uneven, the ground endurance is not enough, the perpendicularity error is too large will also cause the tower crane overturning moment to increase, so that the stability of the tower crane is reduced. Therefore, we should start from these key factors to strictly check and check, and prevent major equipment and personal safety accidents.
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