The invention relates to the technical field of hoisting protection, and discloses a crane anti-back-tipping device which comprises a base and a support, the support is fixedly mounted at the bottom of the base, a top frame is vertically and fixedly mounted at the top of the base, a retractable arm is rotatably mounted at one end of the top of the base, and a balance plate is horizontally and fixedly mounted at the other end of the top of the base; an extension plate is horizontally and fixedly installed on one side of the support, a rotating mechanism used for rotating the retractable arm is arranged on the extension plate and the top frame, a plurality of balancing weights are arranged on the top of the balance plate in a sliding mode, and a rectangular groove is formed in the top of each balancing weight. The number of the movable balancing weights can be adjusted according to the gravity of an object lifted by the crane, the balancing weights automatically move along with rotation of the retractable arm when moving, force arms are automatically adjusted, the force arms of the crane are the same during lifting, in addition, when the angle of the retractable arm is adjusted, the retractable arm is synchronously acted in the two modes, and the lifting efficiency of the crane is improved. And the retractable arm can be adjusted more stably.
本发明涉及起重保护技术领域,公开了一种起重机防后倾装置,包括底座和支架,支架固定安装于底座底部,且底座顶部竖直固定安装有顶架,底座顶部一端转动安装有收放臂,且底座顶部另一端水平固定安装有平衡板,支架一侧水平固定安装有延伸板,且延伸板和顶架上设有用于转动收放臂的转动机构,平衡板顶部滑动设置有多个配重块,且每个配重块顶部均开设有矩形凹槽。本发明能够根据起重机起重物体的重力,调节移动配重块的数量,并且在配重块移动时自动跟随收放臂的转动而移动,实现自动调节力臂,使得在起重时起重机力臂相同,另外在调节收放臂的角度时,通过两中方式同步对收放臂作用,使得收放臂调节的更加平稳。
Anti-back-tilting device of crane
一种起重机防后倾装置
2023-12-05
Patent
Elektronische Ressource
Chinesisch
IPC: | B66C Krane , CRANES |
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