A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
GROUND IMPROVEMENT MACHINE
PROBLEM TO BE SOLVED: To provide a ground improvement machine in which a lower swing stopper does not wear by a corner part of a rod and a mud removing mechanism is not necessarily provided separately, even when a stirring rod is used which has a polygonal cross-section over the entire length thereof.SOLUTION: In a ground improvement machine, a guide member 17 is attached to a stirring rod 7, the guide member having an outer side of a circular shape and an inner side of a polygonal shape that corresponds to an outer shape of the stirring rod 7 and in which the stirring rod 7 is slidable in an axial direction. A lower swing stopper comprises a pair of left and right arms 26 provided in a bracket of a leader so as to be freely opened/closed. The left and right arms 26 respectively include: recessed parts 26a of a semi-circular shape on the opposing surfaces of both of the arms; flanges 26b, 26c protruding toward the inner peripheral side of the recessed parts on upper and lower parts of both of the arms; and guide grooves 27 for housing the guide member 17 in a rotatable manner with the recessed parts 26a and the upper and lower flanges 26b, 26c, when both of the arms 26 are closed.
【課題】全長に亘って断面多角形状の撹拌ロッドを用いた場合でも、下部振れ止めがロッドの角部で摩耗することがなく、泥落とし機構を別途設ける必要がない地盤改良機を提供する。【解決手段】撹拌ロッド７に、外側を円形とし、内側を撹拌ロッド７の外形に対応し、撹拌ロッド７が軸方向に摺動可能な多角形状とした円筒状のガイド部材１７を取り付け、下部振れ止めは、リーダのブラケットに開閉可能に設けられた左右一対のアーム２６を有し、両アームの対向面にそれぞれ半円弧状の凹部２６ａを設けるとともに、両アーム２６の上下に凹部内周側に突出する鍔２６ｂ，２６ｃを設け、両アーム２６が閉じたときに、凹部２６ａと上下の鍔２６ｂ，２６ｃとにより、ガイド部材１７を回転可能に収容するガイド溝２７を形成している。【選択図】図２
GROUND IMPROVEMENT MACHINE
PROBLEM TO BE SOLVED: To provide a ground improvement machine in which a lower swing stopper does not wear by a corner part of a rod and a mud removing mechanism is not necessarily provided separately, even when a stirring rod is used which has a polygonal cross-section over the entire length thereof.SOLUTION: In a ground improvement machine, a guide member 17 is attached to a stirring rod 7, the guide member having an outer side of a circular shape and an inner side of a polygonal shape that corresponds to an outer shape of the stirring rod 7 and in which the stirring rod 7 is slidable in an axial direction. A lower swing stopper comprises a pair of left and right arms 26 provided in a bracket of a leader so as to be freely opened/closed. The left and right arms 26 respectively include: recessed parts 26a of a semi-circular shape on the opposing surfaces of both of the arms; flanges 26b, 26c protruding toward the inner peripheral side of the recessed parts on upper and lower parts of both of the arms; and guide grooves 27 for housing the guide member 17 in a rotatable manner with the recessed parts 26a and the upper and lower flanges 26b, 26c, when both of the arms 26 are closed.
【課題】全長に亘って断面多角形状の撹拌ロッドを用いた場合でも、下部振れ止めがロッドの角部で摩耗することがなく、泥落とし機構を別途設ける必要がない地盤改良機を提供する。【解決手段】撹拌ロッド７に、外側を円形とし、内側を撹拌ロッド７の外形に対応し、撹拌ロッド７が軸方向に摺動可能な多角形状とした円筒状のガイド部材１７を取り付け、下部振れ止めは、リーダのブラケットに開閉可能に設けられた左右一対のアーム２６を有し、両アームの対向面にそれぞれ半円弧状の凹部２６ａを設けるとともに、両アーム２６の上下に凹部内周側に突出する鍔２６ｂ，２６ｃを設け、両アーム２６が閉じたときに、凹部２６ａと上下の鍔２６ｂ，２６ｃとにより、ガイド部材１７を回転可能に収容するガイド溝２７を形成している。【選択図】図２
GROUND IMPROVEMENT MACHINE
地盤改良機
TOMITA YASUKIMI (author) / YAJIMA IPPEI (author)
2015-10-22
Patent
Electronic Resource
Japanese
IPC:
E02D
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