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51. 发明授权

US07172082B2 Mobile crane with a telescopic main boom 有权
标题翻译：移动式起重机具有伸缩主臂
公开(公告)号：US07172082B2
公开(公告)日：2007-02-06
申请号：US10480705
申请日：2002-05-31
申请人： Michael Irsch , Alexander Knecht , Jens Fery
发明人： Michael Irsch , Alexander Knecht , Jens Fery
IPC分类号： B66C23/42
CPC分类号： B66C23/828
摘要： A mobile crane includes an under carriage, a superstructure that is rotatably mounted on the superstructure, and a main boom, which is composed of a base body and several telescopic lengths up to a predetermined maximum number, which slide into one another and can be extended from the base body. The main boom is mounted on the superstructure so that it can rotate about a horizontal axis and its inclination can be adjusted by means of a hydraulic tilting cylinder that is hinged on the superstructure and the base body. A maximum permissible weight is predefined for the main boom, as a result of a restriction on the permissible axle load of the mobile crane during road haulage. The crane is also provided with a lifting capacity increasing device, which significantly increases the lifting capacity of the main boom when the telescopic lengths are extended, in relation to the state without the lifting capacity increasing device. The lifting capacity increasing device, as part of the standard basic equipment of the mobile crane, is connected in a fixed manner to the main boom, while maintaining the maximum number of telescopic lengths that are carried.
摘要翻译：移动式起重机包括下支架，可旋转地安装在上部结构上的上部结构，以及主起重臂，其由基体和几个伸缩长度达到预定最大数量组成，彼此滑动并可延伸从基体。主悬臂安装在上部结构上，使其能够围绕水平轴线旋转，并且其倾斜度可以通过铰接在上部结构和基体上的液压倾斜缸来调节。由于在公路运输期间对移动式起重机的允许轴负载的限制，主臂的最大允许重量是预先确定的。起重机还具有提升能力增加装置，当伸缩长度延长时，相对于没有提升能力增加装置的状态，这显着增加了主起重臂的提升能力。作为移动式起重机的标准基础设备的一部分的起重能力增加装置以固定的方式连接到主起重臂，同时保持承载的最大数量的伸缩长度。

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