The invention provides a multi-stage telescopic mechanism and engineering machinery, and relates to the technical field of engineering machinery. A multi-stage telescopic mechanism comprises a telescopic assembly, the telescopic assembly is used for driving a telescopic arm to stretch out and draw back, the telescopic assembly comprises a guide rod, a moving part, a driving part, a locking part and a pushing part, the guide rod is arranged on a chassis, the moving part is arranged on the guide rod in a sliding mode, and the driving part is connected with the moving part. The locking component comprises at least one locking pin, a locking pin grabbing piece and a first driving hydraulic cylinder. A through hole is formed in any telescopic arm, a plurality of connecting holes are formed in the telescopic arm, and the connecting holes can be in butt joint with the through holes. The locking pin can stretch into the locking hole and is in threaded connection with the interior of the locking hole, the first driving hydraulic cylinder is arranged on the moving part, and the locking pin grabbing piece is arranged at the output end of the first driving hydraulic cylinder and right faces the locking hole. The telescopic arm has the advantages of simple structure, convenience in operation and the like, and the size of the telescopic arm can be greatly reduced.

    本发明提出了一种多级伸缩机构及工程机械,涉及工程机械技术领域。一种多级伸缩机构,包括伸缩组件,伸缩组件构用于驱动伸缩臂伸缩,伸缩组件包括导向杆、移动部件、驱动部件、锁紧部件和推动部件,导向杆设置于底盘上,移动部件滑动设置于导向杆上,驱动部件与移动部件连接。锁紧部件包括至少一个锁紧销、锁紧销抓取件和第一驱动液压缸。任意伸缩臂上开设通孔,伸缩臂上开设有多个连接孔,连接孔均能与通孔对接。锁紧销能伸入到锁紧孔内,并与锁紧孔内部螺纹连接,第一驱动液压缸设置于移动部件上,锁紧销抓取件设置于第一驱动液压缸的输出端,锁紧销抓取件正对锁紧孔。本发明具有结构简单、操作方便等优点,能够极大的缩小伸缩臂的尺寸。


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    Title :

    Multi-stage telescopic mechanism and engineering machinery


    Additional title:

    一种多级伸缩机构及工程机械


    Contributors:
    MA CONG (author)

    Publication date :

    2022-06-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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