The invention discloses a mast crane boom head multi-web box-shaped structure and a mast crane, the multi-web box-shaped structure comprises a main arm, an auxiliary arm, a head cross beam, a pin shaft, a lifting fixed pulley block, a lifting movable pulley block and a variable amplitude pull plate, the head cross beam is formed by welding an upper wing plate, a lower wing plate and a plurality of groups of webs; the head beam is integrally welded to the head of the main arm, and the auxiliary arm is fixed to the head beam through a pin shaft. The lifting fixed pulley block is directly arranged on the head cross beam of the boom, and the variable-amplitude pull plate is mounted on the head cross beam. The variable-amplitude pulling plate and the auxiliary arm share the cross beam web at the head of the main arm, and the structure is compact; the mast crane is not provided with a lifting pull plate and a movable pulley frame, and under the same lifting height, the length of the boom is shorter, and the lifting performance is better.
本发明公开了一种桅杆起重机臂架头部多腹板箱形结构及桅杆起重机,所述多腹板箱形结构包括主臂、副臂、头部横梁、销轴、起升定滑轮组、起升动滑轮组和变幅拉板,所述头部横梁由上翼板、下翼板和多组腹板焊接而成;头部横梁整体焊接在主臂的头部,副臂通过销轴固定在头部横梁上;起升定滑轮组直接布置在臂架头部横梁上,变幅拉板安装在头部横梁上。本发明变幅拉板和副臂共用主臂头部的横梁腹板,结构紧凑;桅杆起重机不设置起升拉板及动滑轮架,相同起升高度下,臂架长度更短,起升性能更好。
Mast crane boom head multi-web box-shaped structure and mast crane
一种桅杆起重机臂架头部多腹板箱形结构及桅杆起重机
2025-02-25
Patent
Electronic Resource
Chinese
IPC: | B66C Krane , CRANES |
Single-double combined boom structure of crane and mast crane thereof
European Patent Office | 2025
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