Lifting device and construction method for liner plate shafts
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- KANTO ELECTRIC KOJI
- Filing Date
- 2024-12-13
- Publication Date
- 2026-06-25
AI Technical Summary
【0014】 本発明のライナープレート立坑用吊り込み装置及び施工方法は、上記の構造より以下の効果のうち少なくとも1つを備える。 <1>ライナープレート立坑の内壁にクレーンユニットを移動自在に固定した構造であるため、作業員が坑内の状況を目視しながらクレーンを操作できる。このため、作業が容易で作業の安全性が高い。 <2>複数の立坑を施工する場合、各立坑の作業を同時並行できるため、作業効率が極めて高く、1つの立坑の施工が、他の立坑の進捗に影響を与えない。 <3>地上にクレーン設置用の用地を確保する必要がないため、作業ヤードを有効利用できると共に、上空制限のある橋梁下や、狭隘な市街地でも施工できる。 <4>ライナープレートの組み立てに使用する場合、ライナープレートを吊り上げた状態でボルト連結することができるため、作業員の肉体的負担が極めて小さく、従来2~3名を必要としていた作業を1名で容易に実施することができる。 <5>ライナープレートの組み立てに使用する場合、クレーンユニットを坑壁に沿って周方向に移動させることで、ライナープレートを連結部分の前面に吊り下ろすことができる。このため、ボルト連結が容易で、作業効率が高い。 <6>ライナープレートの組み立てに使用する場合、ライナープレートを坑外から坑内に吊り込んで、そのまま坑壁に連結すれば、立坑の底面にライナープレートを仮置きする必要がない。このため、限られた坑内の作業空間を有効利用することができる。
Smart Images
Figure 2026104186000001_ABST
Abstract
Claims
1. A liner plate shaft lifting device for use in a liner plate shaft formed by assembling multiple liner plates in a ring shape, A rail unit fixed to the inner wall of the liner plate shaft, A crane unit comprising a slide base and a crane body fixed to the slide base, The rail unit comprises a guide rail that curves along the inner wall of the liner plate shaft, The slide base is configured to be movable along the guide rail in the circumferential direction of the liner plate shaft, Liner plate lifting device for shafts.
2. The crane body comprises a mast erected above the slide base, an arm extending horizontally from the mast and rotatable around the mast, a winch fixed to the mast or the arm, and a wire that can be unwound / retracted by the winch. The wire is characterized by being suspended downward from the tip of the arm. A liner plate lifting device for a shaft according to claim 1.
3. The crane body includes a controller that is connected to the slide base and the winch in a manner that enables communication between them. The controller is configured to allow the crane body to be operated from the bottom of the liner plate shaft. The liner plate lifting device for shafts according to claim 2.
4. The rail unit comprises two guide rails arranged in parallel in the height direction, and a plurality of rail joints connecting the two guide rails vertically. The slide base is equipped with multiple guide rollers, The two guide rails are held in place by the plurality of guide rollers, characterized in that A liner plate lifting device for a shaft according to claim 1.
5. The slide base is characterized by comprising a drive means for rotating at least a portion of the plurality of guide rollers, The liner plate lifting device for shafts according to claim 4.
6. The guide rail is characterized by being made of a circular steel pipe. The liner plate lifting device for shafts according to claim 4.
7. The rail unit comprises a plurality of liner attachments that fix the rail joint to the inner wall of the liner plate shaft, The liner attachment comprises a long corrugated plate having corrugated side edges, and a plurality of fixing holes connecting both sides of the corrugated plate. The liner attachment is fixed to the side flange by bringing the side edge of the vertically oriented corrugated plate into contact with the corrugated surface of the liner plate, bringing one side of the corrugated plate into contact with the side flange of the liner plate, and passing a bolt through the fixing hole and the bolt hole of the side flange and screwing a nut into it. The liner plate lifting device for shafts according to claim 4.
8. A construction method using a liner plate shaft lifting device according to any one of claims 1 to 7, A positioning step involves moving the assembly liner plate below the lowest liner plate constituting the liner plate shaft, and bringing the upper flange of the assembly liner plate into contact with the lower flange of the lowest liner plate. The assembly includes a connecting step of connecting bolts to the bolt holes in the upper flange of the assembly liner plate and the bolt holes in the lower flange of the lowest liner plate, and screwing nuts into them. The positioning step and the connecting step are performed with the assembly liner plate lifted from the bottom surface of the liner plate shaft by the crane unit, characterized in that Construction method.