The invention discloses a mast jacking mechanism and a crane, relates to the field of engineering machinery, and aims to optimize the structure of the mast jacking mechanism so that a mast can be flatly placed on a rotary table. The mast jacking mechanism comprises a rotary table, a mast, a guide piece and a jacking oil cylinder. The mast is rotatably connected with the rotary table. The guide piece is fixed to the end, close to the rotary table, of the mast and comprises an open sliding groove. One end of the jacking oil cylinder is rotatably connected with the rotary table, and the other end of the jacking oil cylinder is matched with the sliding groove and is configured to be switched between the following two positions: the jacking oil cylinder is located in the sliding groove and separated from the sliding groove. According to the mast jacking mechanism provided by the technical scheme, the jacking frame is not arranged, the jacking oil cylinder is matched with the guide piece, and the guide piece is fixedly connected with the mast, so that the mast is driven to rotate when the jacking oil cylinder extends out. When the jacking oil cylinder is horizontally placed, the jacking oil cylinder can be flatly placed on the rotary table. In addition, the number of the components is small, hinge points between the components are reduced, and the assembly relation is reliable.
本发明公开了一种桅杆顶升机构以及起重机,涉及工程机械领域,用以优化桅杆顶升机构的结构,使得桅杆可以平整地放置于转台上。桅杆顶升机构包括转台、桅杆、导向件以及顶升油缸。桅杆与转台可转动连接。导向件固定于桅杆靠近转台的一端,导向件包括敞口的滑槽。顶升油缸的一端与转台可转动连接,顶升油缸的另一端与滑槽配合且被构造为在以下两个位置之间切换:位于滑槽中、脱离滑槽。上述技术方案提供的桅杆顶升机构,没有顶升架,顶升油缸与导向件配合,导向件与桅杆固定连接,实现顶升油缸伸出时带动桅杆转动。顶升油缸在平放时,可以平整地放置于转台上。并且,各部件数量少,部件之间的铰接点减少,装配关系可靠。
Mast jacking mechanism and crane
桅杆顶升机构以及起重机
2023-10-03
Patent
Electronic Resource
Chinese
IPC: | B66C Krane , CRANES |
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