The invention relates to the technical field of cranes, in particular to an anti-back-tilting structure of a luffing jib tower crane, and overcomes the defects that a crane boom in the prior art is easy to tilt backwards and danger occurs. The anti-back-tilting structure comprises a balance arm, a bracket, a cargo boom hinged with one side of the balance arm and a balancing weight arranged at the top end of the other side of the balance arm, wherein a luffing mechanism is arranged at the top end of the balance arm and used for adjusting the rotating angle of the cargo boom around the hinge point of the cargo boom and the balance arm, and an anti-back-tilting device is movably arranged on the side, close to the cargo boom, of the support through a connecting rod. By arranging an electronic limiting structure and a mechanical limiting structure, back tilting of the cargo boom within the range of all the rotating angles and thus danger are avoided, and the safety is higher.
本发明涉及起重机技术领域,尤其涉及动臂塔式起重机防后倾结构,解决现有技术中存在起重机臂架容易后倾,发生危险的缺点,包括平衡臂、支架,与平衡臂的一侧铰接的起重臂和设置在平衡臂另一侧顶端的配重块,所述平衡臂的顶端设置有变幅机构,用于调节起重臂绕着与平衡臂的铰接点旋转的角度,所述支架靠近起重臂的一侧通过连接杆活动设置有防后倾装置,通过设置电子限位结构和机械限位结构,避免起重臂在各个旋转角度的范围内后倾,发生危险,安全性更高。
Anti-back-tilting structure of luffing jib tower crane
动臂塔式起重机防后倾结构
2021-06-22
Patent
Electronic Resource
Chinese
IPC: | B66C Krane , CRANES |