The invention discloses a short-stroke trolley cross beam type tower crane balancing weight falling-off device which comprises two groups of bearing trolleys which are symmetrically arranged along the center line of a balance arm and are respectively in rolling fit with two lower chords of the balance arm; the bearing cross beam is horizontally connected between the two groups of bearing trolleys; the counterweight group is located between the two lower chords and is provided with a plurality of counterweight blocks which are sequentially and adjacently arranged in the horizontal direction, and the group of counterweight blocks close to the arm root direction of the balance arm are movably supported on the bearing cross beam; the same sides of any two adjacent groups of balancing weights are matched through a limiting structure; the front sides and the rear sides of any two adjacent balance weight blocks are matched through bearing structures. And a triggering mechanism. According to the invention, the balance weight group can sensitively fall off from the tail part of the balance arm, the backward tilting moment of the tower crane is instantly reduced, and the anti-overturning effect is achieved so as to cope with sudden unloading working conditions such as rope breakage and hanging anchor of the tower crane.
本发明公开了一种短行程小车横梁式塔机平衡重脱落装置,包括:两组承载小车,沿平衡臂的中心线对称布置,且分别与平衡臂的两根下弦杆构成滚动配合;承载横梁,水平连接在两组所述承载小车之间;平衡重组,位于两根所述下弦杆之间,具有若干沿水平方向依次相邻排布的平衡重块,其中,靠近所述平衡臂的臂根方向的一组平衡重块活动支撑在所述承载横梁上;任意相邻两组所述平衡重块的同一侧均通过限位结构配合;任意相邻两组所述平衡重块的前后侧之间均通过承重结构配合;触发机构。本发明能够使得平衡重组可以灵敏的从平衡臂尾部脱落,瞬间减小塔机的后倾力矩,达到抗倾覆的作用,以应对塔机出现断绳、吊锚等突然卸载工况。
Short-stroke trolley cross beam type tower crane counterweight falling-off device and working method
一种短行程小车横梁式塔机平衡重脱落装置及工作方法
2023-08-22
Patent
Elektronische Ressource
Chinesisch
IPC: | B66C Krane , CRANES |
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