The telescopic supporting leg comprises a fixed supporting leg box with an opening in one end and a movable supporting leg arranged in the fixed supporting leg box in a sleeved mode, the movable supporting leg is driven by a horizontal oil cylinder to extend outwards or retract, and through holes allowing a transmission shaft to penetrate through are formed in a front panel and a rear panel of the fixed supporting leg. A transverse U-shaped plate is arranged in the middle of the movable supporting leg, when the movable supporting leg extends outwards or retracts, the transmission shaft penetrating through the through hole is avoided through the U-shaped plate, and a supporting block used for being in lap joint with a top plate and a bottom plate of the U-shaped plate is arranged on the closed side of the U-shaped plate. A driving mechanism for driving the supporting block to be close to the opening or the through hole in the end part of the fixed supporting leg box when the movable supporting leg stretches out and draws back is arranged in the movable supporting leg. A transmission shaft of a transmission system penetrates through the through hole, the supporting block is driven to be close to the end opening of the fixed supporting leg box, the movable supporting leg extends out of the supporting block to be located on the opening side of the U-shaped plate and is in lap joint with the top plate and the bottom plate to complement the bearing capacity lost by the movable supporting leg, the supporting block is driven to be close to the through hole, and the movable supporting leg is fully retracted and hidden.
本发明公开了一种伸缩支腿系统及起重机,伸缩支腿包括一端开口的固定支腿箱、套设于固定支腿箱内的活动支腿,活动支腿由水平油缸驱动外伸或回缩,所述固定支腿前后面板开设供传动轴穿过的通孔,所述活动支腿中部设有横向的U型板,活动支腿外伸或者回缩时通过U型板避让从通孔穿过的传动轴,所述U型板闭合侧设有用于搭接U型板顶板和底板的支撑块,活动支腿内设有在活动支腿伸缩时带动支撑块靠近固定支腿箱端部开口或者通孔的驱动机构。通孔供传动系统的传动轴穿过,支撑块被驱动靠近固定支腿箱端部开口,活动支腿伸出支撑块位于U型板开口侧,搭接其顶板和底板,补足活动支腿损失的承载力,支撑块被驱动靠近通孔,活动支腿全缩回收、隐藏。
Telescopic supporting leg system and crane
伸缩支腿系统及起重机
2024-09-06
Patent
Electronic Resource
Chinese
IPC: | B66C Krane , CRANES |
Crane telescopic boom, system and method for actuating crane telescopic boom
European Patent Office | 2023
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