The invention provides a cantilever crane and a crane, and belongs to the field of hoisting transportation machinery. The arm frame comprises a main arm, a first variable-amplitude oil cylinder, an auxiliary arm and a second variable-amplitude oil cylinder; the first end of the main arm is used for being rotationally connected with a tower body, the fixed end of the first variable-amplitude oil cylinder is used for being connected with the tower body, and the telescopic end of the first variable-amplitude oil cylinder is connected with the outer wall, close to the first end, of the main arm; the first end of the auxiliary arm is rotationally connected with the second end of the main arm, and the second end of the auxiliary arm is bent relative to the first end of the auxiliary arm, so that the auxiliary arm is of a bent structure with a corner; the fixed end of the second variable-amplitude oil cylinder is connected with the outer wall, close to the second end, of the main arm, the telescopic end of the second variable-amplitude oil cylinder is connected with the outer wall, close to the first end, of the auxiliary arm, and the telescopic end of the second variable-amplitude oil cylinder is located at the corner of the auxiliary arm. According to the boom, the amplitude variation precision of the boom can be improved, and the weight of the head of the boom can be reduced.
本公开提供了一种臂架及吊机,属于起重运输机械领域。所述臂架包括主臂、第一变幅油缸、副臂和第二变幅油缸;所述主臂的第一端用于与塔身转动连接,所述第一变幅油缸的固定端用于与所述塔身连接,所述第一变幅油缸的伸缩端与所述主臂靠近第一端的外壁连接;所述副臂的第一端与所述主臂的第二端转动连接,所述副臂的第二端相对所述副臂的第一端弯折使得所述副臂为具有转角的弯折结构;所述第二变幅油缸的固定端与所述主臂靠近第二端的外壁连接,所述第二变幅油缸的伸缩端与所述副臂靠近第一端的外壁连接,且所述第二变幅油缸的伸缩端位于所述副臂的转角处。本公开通过臂架,可以提高臂架的变幅精度可以降低了臂架头部的重量。
Cantilever crane and crane
臂架及吊机
2023-01-03
Patent
Elektronische Ressource
Chinesisch
IPC: | B66C Krane , CRANES |
Cantilever crane anti-tilting device, cantilever crane system and crane
Europäisches Patentamt | 2023
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