| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a mobile crane optimal for lifting work or the like of a very heavy load. <P>SOLUTION: The mobile crane A includes: an annular base ring 1; a revolving frame 3 placed turnably around the center of the base ring through a turning roller device 2 interposed on the base ring; a lifting facility 4 installed on the revolving frame; and a plurality of traveling bodies 5 provided in a travelable manner at the lower face of the base ring at each predetermined angle along the circumferential direction to support the base ring. Each traveling body preferably has a lateral pair of crawlers 61, and is provided at the lower face of the base ring turnably through the turning device 62. <P>COPYRIGHT: (C)2012,JPO&INPIT |
