会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 10. 发明专利
    • SCREWING STEEL PIPE PILE
    • JP2001073364A
    • 2001-03-21
    • JP24950099
    • 1999-09-03
    • KUBOTA KK
    • OTSUKI MITSUGIKUROSAWA FUTOMASA
    • E02D5/56E02D5/28E02D5/72
    • PROBLEM TO BE SOLVED: To lessen the insertion resistance of a steel pipe pile by fixing a spiral wing over substantially one winding on the lower end of a steel pipe making the body of the pile, hanging a leading cylinder fixed on the inner periphery of the spiral wing and projected downward thereof, and projecting a plurailty of window holes and excavation plates on the peripheral wall of the leading cylinder. SOLUTION: When the steel pipe pile is pushed into ground while rotating it, the excavation plate 9 of the leading cylinder 7 excavates the ground. A part of soil and sand is made into flow to the leading cylinder 7 from the window hole 8, and the other part of soil and sand is moved to the lower face of an inner wing part 5b along the conical face of the leading cylinder 7. Next, the spiral wing 5 is cut into the outside ground of the leading cylinder 7, and screwed by the reaction force of the ground acting on the upper face of the spiral wing 5 to promote insertion. Soil and sand entering a gap 6b is consolidated on the peripheral ground while sliding on the upper face of the wing of spiral inclination. Lower side soil and sand and soil and sand excavated by the excavation plate 9 are made to flow in to be pumped into the steel pipe 1. Thus, the pile can be inserted and promoted only by rotating it by slight push pressure force, and can be buried without removing soil.