To provide a lifting device which can stabilize engagement between an engaging pin of a lock device and an engaged part of a leg, and suppress the weight or cost increase of the leg, and a work barge equipped with the lifting device.SOLUTION: A lifting device 4 enables relative movement with respect to a leg 3 which supports a platform 2, and a plurality of engaging recesses 35 are formed on the two opposing engaging surfaces of the leg in the longitudinal direction of the leg. The lifting device comprises: a pair of lock devices 50 that drive an engaging pin 56 for locking and fixing the leg and engage the engaging projected surface 58 of the engaging pin with the engaging recessed surfaces 36 of the engaging recesses; and a lifting cylinder device 60 that lifts one of the pair of lock devices so as to enable the pair of lock devices to approach each other. The engaging recesses are formed to be tapered toward the inside of the leg, and the engaging pin is formed to be tapered toward the engaging recesses.SELECTED DRAWING: Figure 3
【課題】ロック装置の係合ピンとレグの被係合部との間での係合が安定するとともに、レグの重量アップやコストアップを抑制できる昇降装置および該昇降装置を備える作業台船を提供する。【解決手段】プラットフォーム2を支持するレグ3に対して相対移動を可能にする昇降装置4であって、レグの対向する2面の係合面には、複数の係合凹部35がレグの長手方向に形成されており、昇降装置は、レグをロック固定するための係合ピン56を駆動して、係合ピンの係合凸面58を係合凹部の係合凹面36に係合させる一対のロック装置50と、一対のロック装置が互いに離れるかまたは近づくように、一対のロック装置のうちの一方を昇降させる昇降シリンダ装置60とを備え、係合凹部がレグの内側に向けて先細のテーパー形状をしているとともに、係合ピンが係合凹部に向けて先細のテーパー形状をしている。【選択図】図3
LIFTING DEVICE AND WORK BARGE EQUIPPED WITH THE SAME
昇降装置および該昇降装置を備える作業台船
2020-06-25
Patent
Electronic Resource
Japanese
IPC: | B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last / E02B HYDRAULIC ENGINEERING , Wasserbau |
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