L48A1 Mast Section Tower Crane Overload Limiter, published date
(1) overload operation does great harm to tower crane structure, it will not only cause the down-warping of the main beam of the tower crane, but also cause the instability, crack or welding seam of the upper cover plate and web plate of the main beam, and also cause the fracture of the tower crane arm or tower body.
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(2) the overload operation of tower crane will produce excessive stress, which can cause the wire rope to break, the transmission parts to be damaged, the electric motor to burn down, because the braking torque is relatively insufficient, causes the brake to be invalid and so on. (3) because the overload destroyed the overall stability of the tower crane, the tower crane collapse and other malignant accidents may occur. Service requirements for overload limiters
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