Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
EXPANSION DRILLING APPARATUS AND EXPANSION DRILLING METHOD
PROBLEM TO BE SOLVED: To overcome a problem with a publicly known example for confirming compressive deformation of a test piece that the deformation may be confirmed only after completion of the work and expansion cannot be confirmed in a real-time basis, and to overcome a problem with another publicly known example for estimating expansion of an expansion blade based on resistance against rod drilling that actual expansion of the expansion blade cannot be confirmed.SOLUTION: An expansion drilling apparatus has a drilling machine 5 suspended from a leader 2 fitted on a traveling base machine 1, the drilling machine comprising a plurality of rods 12 provided vertically and an expansion head 15 having an expansion blade 4 provided in a lower part of the rod 12 in a lowest tier. The expansion head 15 has the expansion blade 4 fitted at a prescribed position above a drilling head 17 provided at a bottom end of a head rod 16, the expansion blade being fitted rotatably between a housing position located roughly in parallel with the head rod 16, and an expansion position opened outward than a drilling diameter of the drilling head 17. Detection means 25 is provided between the expansion blade 4 and the head rod 16, for detecting an expanded state of the expansion blade 4 while drilling into a ground.SELECTED DRAWING: Figure 2
【課題】試験片の圧縮変形を確認する公知例では、変形を確認できるのは作業終了後であり、リアルタイムで拡開を確認できないという課題がある。また、ロッドの掘削抵抗により拡大翼の拡開を予測する公知例では、実際の拡大翼の拡開を確認できないという課題がある。【解決手段】 走行可能なベースマシン１に装着する、リーダ２に吊設する掘削機５を、上下に複数のロッド１２と最下端のロッド１２の下部に設けた拡大翼４を有する拡大ヘッド１５とにより構成し、前記拡大ヘッド１５は、ヘッドロッド１６の下端に設けた掘削ヘッド１７の上方所定位置に前記拡大翼４を、前記ヘッドロッド１６と略平行に位置する格納位置と前記掘削ヘッド１７の掘削径よりも外側に開いた拡開位置との間回動自在に取付けて構成し、前記拡大翼４とヘッドロッド１６との間には、地中での掘削作業中に拡大翼４の拡開状態を検出する検出手段２５を設けた拡大掘削装置。【選択図】図２
EXPANSION DRILLING APPARATUS AND EXPANSION DRILLING METHOD
PROBLEM TO BE SOLVED: To overcome a problem with a publicly known example for confirming compressive deformation of a test piece that the deformation may be confirmed only after completion of the work and expansion cannot be confirmed in a real-time basis, and to overcome a problem with another publicly known example for estimating expansion of an expansion blade based on resistance against rod drilling that actual expansion of the expansion blade cannot be confirmed.SOLUTION: An expansion drilling apparatus has a drilling machine 5 suspended from a leader 2 fitted on a traveling base machine 1, the drilling machine comprising a plurality of rods 12 provided vertically and an expansion head 15 having an expansion blade 4 provided in a lower part of the rod 12 in a lowest tier. The expansion head 15 has the expansion blade 4 fitted at a prescribed position above a drilling head 17 provided at a bottom end of a head rod 16, the expansion blade being fitted rotatably between a housing position located roughly in parallel with the head rod 16, and an expansion position opened outward than a drilling diameter of the drilling head 17. Detection means 25 is provided between the expansion blade 4 and the head rod 16, for detecting an expanded state of the expansion blade 4 while drilling into a ground.SELECTED DRAWING: Figure 2
【課題】試験片の圧縮変形を確認する公知例では、変形を確認できるのは作業終了後であり、リアルタイムで拡開を確認できないという課題がある。また、ロッドの掘削抵抗により拡大翼の拡開を予測する公知例では、実際の拡大翼の拡開を確認できないという課題がある。【解決手段】 走行可能なベースマシン１に装着する、リーダ２に吊設する掘削機５を、上下に複数のロッド１２と最下端のロッド１２の下部に設けた拡大翼４を有する拡大ヘッド１５とにより構成し、前記拡大ヘッド１５は、ヘッドロッド１６の下端に設けた掘削ヘッド１７の上方所定位置に前記拡大翼４を、前記ヘッドロッド１６と略平行に位置する格納位置と前記掘削ヘッド１７の掘削径よりも外側に開いた拡開位置との間回動自在に取付けて構成し、前記拡大翼４とヘッドロッド１６との間には、地中での掘削作業中に拡大翼４の拡開状態を検出する検出手段２５を設けた拡大掘削装置。【選択図】図２
EXPANSION DRILLING APPARATUS AND EXPANSION DRILLING METHOD
拡大掘削装置および拡大掘削方法
MATSUI YOSHINORI (Autor:in) / TAKADA TAKEHIRO (Autor:in) / SATO YUICHI (Autor:in) / SAGI KENICHI (Autor:in) / NAMAKIYAMA YUJI (Autor:in) / MAKINO HIDEO (Autor:in) / IMAI KYOJI (Autor:in)
07.12.2017
Patent
Elektronische Ressource
Japanisch
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