The invention relates to a telescopic arm assembly and a crane. The telescopic arm assembly comprises a first arm, a second arm, a third arm and a fourth arm which are sequentially connected in a sleeved mode. A cylinder rod of the oil cylinder is connected to the first-section arm, and a cylinder barrel is connected to the second-section arm; the first rope pulley block is connected with the first-section arm, the cylinder barrel and the third-section arm; the second rope pulley block is connected with the third-section arm and the fourth-section arm; the third rope pulley block is connected with the first-section arm, the second-section arm and the fourth-section arm; the cylinder barrel is configured to stretch out relative to the cylinder rod so as to drive the second-section arm to stretch out, the first rope pulley block is configured to drive the third-section arm to stretch out in the stretching-out process of the cylinder barrel, and the second rope pulley block is configured to drive the fourth-section arm to stretch out in the stretching-out process of the third-section arm; the cylinder barrel is configured to retract relative to the cylinder rod so as to drive the second-section arm to retract, the third rope pulley block is configured to drive the fourth-section arm to retract in the retracting process of the second-section arm, and the second rope pulley block is configured to drive the third-section arm to retract in the retracting process of the fourth-section arm; and the telescopic efficiency is improved.
本发明涉及一种伸缩臂组件及起重机。伸缩臂组件包括:依次套接的一、二、三和四节臂;油缸,缸杆连接于一节臂,缸筒连接于二节臂;第一绳索滑轮组,连接一节臂、缸筒和三节臂;第二绳索滑轮组,连接三节臂和四节臂;以及第三绳索滑轮组,连接一节臂、二节臂和四节臂;缸筒被配置为相对于缸杆伸出,以带动二节臂伸出,第一绳索滑轮组被配置为在缸筒伸出的过程中带动三节臂伸出,第二绳索滑轮组被配置为在三节臂伸出的过程中带动四节臂伸出;缸筒被配置为相对于缸杆缩回,以带动二节臂缩回,第三绳索滑轮组被配置为在二节臂缩回的过程中带动四节臂缩回,第二绳索滑轮组被配置为在四节臂缩回的过程中带动三节臂缩回;提高了伸缩效率。
Telescopic arm assembly and crane
伸缩臂组件及起重机
2023-09-01
Patent
Elektronische Ressource
Chinesisch
IPC: | B66C Krane , CRANES |
Installation method of main beam assembly of telescopic quay crane and telescopic quay crane
Europäisches Patentamt | 2021
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