DIGGING/STIRRING TOOL

• Main Author: SATO ATSUYA
• Format: Patent
• Language: English; Japanese
• Published: 04.07.2019
• Subjects: EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

To provide a digging/stirring tool capable of making the mechanism for reducing the soil adhesion which causes the occurrence of a corotation phenomenon relatively simple and making the manufacturing cost and the management maintenance cost inexpensive, and capable of reliably preventing the corotation phenomenon.SOLUTION: The present invention has, as a plurality of stirring blades, a driving stirring blade that rotates integrally with a digging/stirring shaft, and a floating stirring blade that rotates in a floating state with respect to the digging/stirring shaft. The three-dimensional cam structure comprises a cam portion provided on one of the digging/stirring shaft or a boss portion and having an undulating surface which is undulated in the axial direction of the digging/stirring shaft with respect to the circumferential direction of the digging/stirring shaft, and a cam receiving portion provided on the other of the boss portion or the above-mentioned digging/stirring shaft and having a contact element capable of sliding contact with the undulating surface of the cam portion. The three-dimensional cam structure vibrates the floating stirring blade according to the undulation of the undulating surface by the relative rotation of the digging/stirring shaft to the boss portion.SELECTED DRAWING: Figure 1 【課題】共回り現象の発生原因となる土壌付着を低減化する機構を比較的簡単にして、製造コストや管理維持コストを安価にすることができ、共回り現象を確実に防止することができる掘削・撹拌具を提供する。【解決手段】複数の撹拌翼として、掘削・撹拌軸と一体に回転する駆動撹拌翼と、掘削・撹拌軸に対して遊動状態で回転する遊動撹拌翼と、を有し、掘削・撹拌軸又はボス部のいずれか一方に設けられ、掘削・撹拌軸の周方向について掘削・撹拌軸の軸方向に起伏する起伏面を有するカム部と、ボス部又は上記掘削・撹拌軸のいずれか他方に設けられ、カム部の起伏面に対して摺接可能な接触子を有するカム受部と、により立体カム構造をなし、立体カム構造は、掘削・撹拌軸のボス部に対する相対回転によって遊動撹拌翼を起伏面の起伏に応じて振動させるてなることとした。【選択図】図１