To provide a mobile crane easily assembled and disassembled even in a narrow construction site.
This mobile crane is structured such that a jib base end is connected to a jib tip at a connection part having an inward-folding connection structure to constitute a jib; the jib base end and the jib tip are fixed by a jib fixation device so as not to be folded inward at the connection part; a relative angle between a boom and the jib end is fixed by a relative angle fixation means; and the fixation of the relative angle by the relative angle fixation means is released by a relative angle fixation releasing means. Thereby, the need of securing a very long ground for assembly and disassembly of the mobile crane is obviated, thereby a large mobile crane can be assembled and disassembled even in a narrow construction side, and work efficiency of the assembly and the disassembly of the mobile crane is improved.
NAKATSU TAKESHI
HOSHINO HIROYUKI
YAMAMOTO KAZUNORI
KAHARA AKIRA
| JPH1029791A | 1998-02-03 | |||
| JPH10316366A | 1998-12-02 | |||
| JPH11106185A | 1999-04-20 | |||
| JP2006176242A | 2006-07-06 | |||
| JPH1029791A | 1998-02-03 | |||
| JPH10316366A | 1998-12-02 | |||
| JPH11106185A | 1999-04-20 |