Title:
ASSEMBLING METHOD OF STEEL TOWER, MAST GUIDE DEVICE FOR DERRICK FOR BUILDING DEMOLITION WORK, AND TRANSFERRING METHOD OF THE MAST GUIDE DEVICE
Document Type and Number:
Japanese Patent JP2020158302
Kind Code:
A
Abstract:
To provide a mast guiding device that eliminates the lifting and lowering work that workers move between a steel tower and a mast when assembling the steel tower.SOLUTION: A mast guide device 7 surrounds a mast 3 so as to be able to move up and down relative to each other, is supported by a steel tower main pillar material P by a horizontal branch line 9, and holds the mast 3 perpendicularly to a steel tower T, comprising an annular frame 14 that surrounds the mast 3 so as to be able to move up and down relative to each other, a guide roller 15 provided thereon, and a stopper 16. The guide roller 15 can roll up and down on the outside of mast main pillar materials 3a to 3d. The stopper 16 can freely restrain and release the mast main pillar materials 3a to 3d, and is urged to a restrained position by the spring 17. The horizontal branch line 9, with one end side being connected to the stopper 16, arranges the stopper 16 at a release position against the urging force of the spring 17 when the other end side is locked to the steel tower main pillar material P with a predetermined tension.SELECTED DRAWING: Figure 7
Inventors:
KAWASE JUNJI
NORITAKE KATSUYA
ISOMURA ATSUJI
WATANABE SHINYA
KAWASAKI NORIAKI
SUZUKI HIROYUKI
NORITAKE KATSUYA
ISOMURA ATSUJI
WATANABE SHINYA
KAWASAKI NORIAKI
SUZUKI HIROYUKI
Application Number:
JP2019063129A
Publication Date:
October 01, 2020
Filing Date:
March 28, 2019
Export Citation:
Assignee:
C TEKKU KK
SANWA TEKKI CORP
SANWA TEKKI CORP
International Classes:
B66C23/28; B66C23/60
Domestic Patent References:
| JPS63196493A | 1988-08-15 | |||
| JPS4725941A | ||||
| JP2009133139A | 2009-06-18 | |||
| JPS5943795A | 1984-03-10 | |||
| JP2017119571A | 2017-07-06 |
Foreign References:
| US20150167342A1 | 2015-06-18 |
Attorney, Agent or Firm:
Tadashi Otsuka