A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
ROTARY TYPE MULTI-PIPE SAMPLER AND SWIVEL HEAD THEREWITH
To provide a rotary type multi-pipe sampler which securely prevents co-rotation of an inner pipe without increasing the number of components and weight, and can collect core samples without disturbing from the ground including hard steelmaking slugs like calcia modified soil.SOLUTION: A rotary type multi-pipe sampler (1) is configured to: connect, with a swivel joint, an approximately cylindrical outer pipe head (23) which holds an outer pipe (11) having a drilling bit (10) installed at its tip from a rear end side, and an approximately cylindrical inner pipe head (22) which holds an inner pipe (21) arranged inside the outer pipe from the rear end side in the outer pipe; rotate and cut the ground by the tip of the outer pipe that rotates with the outer pipe head; and store uncut core samples in the inside by a transparent pipe (31) arranged inside the inner pipe. The rotary type multi-pipe sampler inhibits co-rotation of the inner pipe with rotation of the outer pipe, by taking off the center of gravity of the inner pipe head from a rotating shaft of the swivel joint.SELECTED DRAWING: Figure 1
【課題】 部品点数や重量を増大せずとも内管の供回りを確実に防ぎ、カルシア改質土のように硬質な製鋼スラグを含む地盤からコアサンプルを乱れなく採取することが可能なロータリー式多重管サンプラーを提供する。【解決手段】ロータリー式多重管サンプラー（１）は、先端に掘削ビット（１０）が取り付けられた外管（１１）をその後端側から保持する概略円柱状の外管ヘッド（２３）と、前記外管の内側に配置される内管（２１）をその後端側から前記外管内で保持する概略円柱状の内管ヘッド（２２）とをスイベルジョイントで連結し、前記外管ヘッドと供に回転する前記外管の先端で地盤を回転切削し、その内側に削り残されるコアサンプルを、前記内管の内側に配置された透明管（３１）で収容するロータリー多重管サンプラーにおいて、前記内管ヘッドの重心を前記スイベルジョイントの回転軸から外すことにより、前記外管の回転に伴う前記内管の供回りを抑える。【選択図】 図１
ROTARY TYPE MULTI-PIPE SAMPLER AND SWIVEL HEAD THEREWITH
To provide a rotary type multi-pipe sampler which securely prevents co-rotation of an inner pipe without increasing the number of components and weight, and can collect core samples without disturbing from the ground including hard steelmaking slugs like calcia modified soil.SOLUTION: A rotary type multi-pipe sampler (1) is configured to: connect, with a swivel joint, an approximately cylindrical outer pipe head (23) which holds an outer pipe (11) having a drilling bit (10) installed at its tip from a rear end side, and an approximately cylindrical inner pipe head (22) which holds an inner pipe (21) arranged inside the outer pipe from the rear end side in the outer pipe; rotate and cut the ground by the tip of the outer pipe that rotates with the outer pipe head; and store uncut core samples in the inside by a transparent pipe (31) arranged inside the inner pipe. The rotary type multi-pipe sampler inhibits co-rotation of the inner pipe with rotation of the outer pipe, by taking off the center of gravity of the inner pipe head from a rotating shaft of the swivel joint.SELECTED DRAWING: Figure 1
【課題】 部品点数や重量を増大せずとも内管の供回りを確実に防ぎ、カルシア改質土のように硬質な製鋼スラグを含む地盤からコアサンプルを乱れなく採取することが可能なロータリー式多重管サンプラーを提供する。【解決手段】ロータリー式多重管サンプラー（１）は、先端に掘削ビット（１０）が取り付けられた外管（１１）をその後端側から保持する概略円柱状の外管ヘッド（２３）と、前記外管の内側に配置される内管（２１）をその後端側から前記外管内で保持する概略円柱状の内管ヘッド（２２）とをスイベルジョイントで連結し、前記外管ヘッドと供に回転する前記外管の先端で地盤を回転切削し、その内側に削り残されるコアサンプルを、前記内管の内側に配置された透明管（３１）で収容するロータリー多重管サンプラーにおいて、前記内管ヘッドの重心を前記スイベルジョイントの回転軸から外すことにより、前記外管の回転に伴う前記内管の供回りを抑える。【選択図】 図１
ROTARY TYPE MULTI-PIPE SAMPLER AND SWIVEL HEAD THEREWITH
ロータリー式多重管サンプラー及びこれに用いられるスイベルヘッド
TAKAURA MAKOTO (author) / TOKUYAMA MASANARI (author)
2019-11-14
Patent
Electronic Resource
Japanese