The invention relates to a double-rotation amplitude-changing type portal crane which comprises a first rotation mechanism, the first rotation mechanism is connected with a middle rotation support to drive the middle rotation support to rotate, one end of the middle rotation support is connected with a second rotation mechanism, and the second rotation mechanism is connected with a rotation arm frame to drive the rotation arm frame to rotate. A lifting mechanism is installed on the rotating arm frame and connected with a lifting rope, the lifting rope is wound around an end pulley of the rotating arm frame, then the movable end of the lifting rope is connected with a lifting appliance, the amplitude changing mode of the portal crane is not prone to being affected by wind loads, and flexibility is good.
本发明涉及一种双回转变幅式门座起重机,包括第一回转机构,第一回转机构与中部旋转支撑连接以带动中部旋转支撑转动,中部旋转支撑的一端与第二回转机构连接,第二回转机构与旋转臂架连接以带动旋转臂架转动,旋转臂架安装有提升机构,提升机构与起吊绳索连接,起吊绳索绕过旋转臂架的端部滑轮后其活动端连接有吊具,本发明的门座起重机变幅方式不易受风荷载影响,灵活性好。
Double-rotation amplitude-changing gantry crane
一种双回转变幅式门座起重机
2024-06-14
Patent
Electronic Resource
Chinese
IPC: | B66C Krane , CRANES |