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A platform for research: civil engineering, architecture and urbanism
STEEL PIPE SCREW COUPLING
PROBLEM TO BE SOLVED: To provide a steel pipe screw coupling capable of ensuring coupling tensile strength equal to or stronger than the strength of steel pipe main bodies even if tapered screws of coupled parts loosen.SOLUTION: A steel pipe screw coupling comprises: a tubular pin 2 joined to an end surface 11A of one steel pipe main body 1A; and a tubular box 3 joined to an end surface 11B of the other steel pipe main body 1B. In the steel pipe screw coupling, a tapered male screw 2 is formed on an outer circumferential surface of the pin 2, a tapered female screw 32 is formed on an inner circumferential surface of the box 3, the pin 2 is fastened to the box 3 by fitting the male screw 22 into the female screw 33, and the following expressions (1), (2), and (3) are satisfied.
【課題】継手部のテーパねじが緩んだ場合においても、鋼管本体以上の継手引張強度を確保する鋼管用ねじ継手を提供する。【解決手段】一方の鋼管本体１Ａの端面１１Ａに接合される管状のピン２と、他方の鋼管本体１Ｂの端面１１Ｂに接合される管状のボックス３とを備える鋼管用ねじ継手において、前記ピン２の外周面にテーパ状の雄ねじ２２が形成され、前記ボックス３の内周面にテーパ状の雌ねじ３２が形成されており、前記雄ねじ２２と前記雌ねじ３３とが嵌合することにより、前記ピン２と前記ボックス３が締結され、下記式（１）、（２）及び（３）を満たす、鋼管用ねじ継手。【選択図】図１
STEEL PIPE SCREW COUPLING
PROBLEM TO BE SOLVED: To provide a steel pipe screw coupling capable of ensuring coupling tensile strength equal to or stronger than the strength of steel pipe main bodies even if tapered screws of coupled parts loosen.SOLUTION: A steel pipe screw coupling comprises: a tubular pin 2 joined to an end surface 11A of one steel pipe main body 1A; and a tubular box 3 joined to an end surface 11B of the other steel pipe main body 1B. In the steel pipe screw coupling, a tapered male screw 2 is formed on an outer circumferential surface of the pin 2, a tapered female screw 32 is formed on an inner circumferential surface of the box 3, the pin 2 is fastened to the box 3 by fitting the male screw 22 into the female screw 33, and the following expressions (1), (2), and (3) are satisfied.
【課題】継手部のテーパねじが緩んだ場合においても、鋼管本体以上の継手引張強度を確保する鋼管用ねじ継手を提供する。【解決手段】一方の鋼管本体１Ａの端面１１Ａに接合される管状のピン２と、他方の鋼管本体１Ｂの端面１１Ｂに接合される管状のボックス３とを備える鋼管用ねじ継手において、前記ピン２の外周面にテーパ状の雄ねじ２２が形成され、前記ボックス３の内周面にテーパ状の雌ねじ３２が形成されており、前記雄ねじ２２と前記雌ねじ３３とが嵌合することにより、前記ピン２と前記ボックス３が締結され、下記式（１）、（２）及び（３）を満たす、鋼管用ねじ継手。【選択図】図１
STEEL PIPE SCREW COUPLING
鋼管用ねじ継手
TSURU EIJI (author) / TERADA YOSHIO (author) / TODA ARITAKA (author)
2015-06-18
Patent
Electronic Resource
Japanese
STEEL PIPE SCREW JOINT AND MANUFACTURING METHOD OF STEEL PIPE SCREW JOINT
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