To reduce the impact of earthquakes on a crane device while maintaining the range of motion of a moving body under normal use.SOLUTION: A crane collision dumping device is provided on a moving body that travels along a rail while supporting a hanging device, or an object to be avoided that is located at least on one end side of the movable range of the moving body that runs on the rail so as to avoid collision with the moving body, comprising a shock absorber that attenuates the moving speed of the moving body toward the object to be avoided when the moving body reaches an operating position located on the front side in the longitudinal direction of the rail with respect to the object to be avoided, and a damper that is provided on the moving body or the object to be avoided, has a viscous resistor inside, and starts damping of the moving speed of the moving body toward the object to be avoided at a position on the front side in the longitudinal direction of the rail from the operating position.SELECTED DRAWING: Figure 1
【課題】クレーン装置において、地震発生時における衝撃の減衰と通常使用時における移動体の可動範囲の確保を両立させる。【解決手段】クレーンの衝突緩和装置は、吊り具を支持しながらレールに沿って走行する移動体、又はレールを走行する移動体の可動範囲の少なくとも一端側に位置して移動体との衝突を回避すべき回避対象物に設けられ、移動体が回避対象物よりレールの長手方向の手前側に位置する作動位置に達した場合に回避対象物に向かう移動体の移動速度を減衰させる緩衝器と、移動体又は回避対象物に設けられ、内部に粘性抵抗体を有し、作動位置よりレールの長手方向の手前側の位置において回避対象物に向かう移動体の移動速度の減衰を開始するダンパと、を備える。【選択図】 図1
CRANE COLLISION DAMPING DEVICE AND CRANE DEVICE
クレーンの衝突緩和装置及びクレーン装置
2020-08-31
Patent
Electronic Resource
Japanese
IPC: | B66C Krane , CRANES |