The invention discloses a height limiter for a crane. The height limiter comprises a suspension arm, a sliding groove, a screw rod, a second bolt and connecting rods; a guide wheel is rotatably connected with the upper left end of the suspension arm, and a steel wire rope is arranged on the outer side of the guide wheel in an attached mode; fixing discs are fixedly installed on the front side andthe rear side of the upper left end of the suspension arm through first bolts; and rotary frames are suspended below the left part of the guide wheel, and the tops of the rotary frames are fixedly connected with the lower sides of rotary arms. The height limiter for the crane is provided with the rotary arms, the rotary frames, the connecting rods and fixed frames, and when the angle between the steel wire rope and the suspension arm is changed, the steel wire rope pulls the rotary frame to rotate with one end of the rotary arm as a fulcrum, so that the rotary frame is still fixed on the steelwire rope and the suspension arm; when the steel wire rope shakes, the fixed frame is pushed by the guide shaft to rotate with one end of the connecting rod as a fulcrum, the steel wire rope is keptin the center of the fixed frame, the structure plays a role in compensation and positioning, rigid friction is reduced while the steel wire rope shakes, abrasion is reduced, and the service life is prolonged.
本发明公开了一种起重机用高度限位器,包括吊臂、滑槽、螺杆、第二螺栓和连接杆,所述吊臂左上端转动连接有导向轮,且导向轮外侧贴合设置有钢丝绳,所述吊臂左上端前后两侧通过第一螺栓固定安装有固定盘,所述导向轮左下方悬空有旋转架,且旋转架顶部与旋臂下侧固定连接。该起重机用高度限位器,设置有旋臂、旋转架、连接杆和固定架,钢丝绳与吊臂之间角度发生改变时,钢丝绳拉动旋转架以旋臂一端为支点转动,使旋转架依旧固定在钢丝绳与吊臂上,钢丝绳晃动时通过导向轴推动固定架以连接杆一端为支点转动,使钢丝绳保持在固定架中心部位,上述结构起到补偿和定位的作用,使其适应晃动的钢丝绳同时减少刚性摩擦,降低了磨损,延长了使用寿命。
Height limiter for crane
一种起重机用高度限位器
2021-02-19
Patent
Electronic Resource
Chinese
IPC: | B66C Krane , CRANES |