Title:
BRIDGE CONSTRUCTION CRANE FOR INSTALLING A GIRDER IN A CURVED SECTION
Document Type and Number:
WIPO Patent Application WO/2012/039547
Kind Code:
A2
Abstract:
Disclosed is a crane for installing a girder on the upper portion of a pier to construct a bridge. The crane includes: a crane girder constituting the body of the crane; a leg part longitudinally fixed to the crane girder, and including a first leg fixed to a front pier, a second leg installed on the top surface of a preinstalled girder, and a third leg spaced a certain distance from the second leg such that the center of gravity of the crane is located behind the second leg; a rotation member installed on the second leg to rotate the crane girder by a certain angle; and a sliding member installed on the first leg to slide when the crane girder is rotated by a certain angle. Thus, when a girder is installed in a curved section, a change in rotation of about 3° is made about the second leg using a main cylinder and an auxiliary cylinder, thereby making a rotation correction. In addition, the sliding member installed on the first leg facilitates the installation of a girder in a curved section.
Inventors:
SONG BYOUNG-HYOUN (KR)
Application Number:
PCT/KR2011/005415
Publication Date:
March 29, 2012
Filing Date:
July 22, 2011
Export Citation:
Assignee:
EK HEAVY IND CO LTD (KR)
SONG BYOUNG-HYOUN (KR)
SONG BYOUNG-HYOUN (KR)
International Classes:
B66C23/18; E01D21/00; E01D21/08
Foreign References:
| JP2007162402A | 2007-06-28 | |||
| KR20070104048A | 2007-10-25 | |||
| JP2001146716A | 2001-05-29 | |||
| KR20030052742A | 2003-06-27 | |||
| JP2004263449A | 2004-09-24 |
Attorney, Agent or Firm:
CHO, Hyeon-Seog (KR)
조현석 (KR)
조현석 (KR)
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Claims: