Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
CONNECTION STRUCTURE AND EXCAVATION CLAW
PROBLEM TO BE SOLVED: To provide an inexpensive connection structure and an excavation claw, for heavy excavation, excellent in attachability-detachability, hardly causing bit dropout, restraining a residual stress crack after soldering, reducing a tip loss, being lightweight and small size, having the long service life, and being high in excavation efficiency.SOLUTION: A connection structure of an excavation claw 1 detachably installed in excavation means for excavating the ground and a holder 3 for fixing the excavation claw 1 to the excavation means, comprises a fitting hole 12 for fitting a shaft part 32 of the holder 3 for fixing the excavation claw 1 to the excavation means, and holds a tip 2 by two surfaces or more in the longitudinal direction for making excavation force act, and a rear end part 21 of the tip 2 is arranged in front and the vicinity of the fitting hole 12, and insertion holes 13 and 14 of a pin 4 uniform in an outer diameter are arranged by two on the same line in an outer peripheral part of the fitting hole 12, and these eliminate looseness between the pin 4 and itself. In the holder 3, a shaft part 32 is provided with a through-hole 33 for penetratingly inserting the pin 4, and is constituted so as to have looseness in at least a part between the pin 4 and itself.SELECTED DRAWING: Figure 1
【課題】重掘削用で、着脱性が良く、ビット脱落が殆どなく、ロウ付け後の残留応力割れを抑制し、チップ欠損が少なく、軽量小型、長寿命で、掘削効率が高い、安価な接続構造と掘削爪を提供する。【解決手段】地盤を掘削する掘削手段に着脱自在に取り付けられる掘削爪１と掘削爪１を掘削手段に固定するホルダー３との連結構造であって、掘削爪１を掘削手段に固定するホルダー３の軸部３２が嵌合する嵌合穴１２を有し、チップ２を掘削力が作用する前後方向に２面以上で保持し、チップ２の後端部２１を嵌合穴１２の前方且つ近傍に配置し、嵌合穴１２の外周部に、外径が一様なピン４の挿入穴１３，１４を同一線上に２つ設け、これらがピン４との間にガタがないようにする。また、ホルダー３には、軸部３２に、ピン４を貫通して挿入する貫通穴３３を設け、ピン４との間で少なくとも一部にガタを有するように構成する。【選択図】図１
CONNECTION STRUCTURE AND EXCAVATION CLAW
PROBLEM TO BE SOLVED: To provide an inexpensive connection structure and an excavation claw, for heavy excavation, excellent in attachability-detachability, hardly causing bit dropout, restraining a residual stress crack after soldering, reducing a tip loss, being lightweight and small size, having the long service life, and being high in excavation efficiency.SOLUTION: A connection structure of an excavation claw 1 detachably installed in excavation means for excavating the ground and a holder 3 for fixing the excavation claw 1 to the excavation means, comprises a fitting hole 12 for fitting a shaft part 32 of the holder 3 for fixing the excavation claw 1 to the excavation means, and holds a tip 2 by two surfaces or more in the longitudinal direction for making excavation force act, and a rear end part 21 of the tip 2 is arranged in front and the vicinity of the fitting hole 12, and insertion holes 13 and 14 of a pin 4 uniform in an outer diameter are arranged by two on the same line in an outer peripheral part of the fitting hole 12, and these eliminate looseness between the pin 4 and itself. In the holder 3, a shaft part 32 is provided with a through-hole 33 for penetratingly inserting the pin 4, and is constituted so as to have looseness in at least a part between the pin 4 and itself.SELECTED DRAWING: Figure 1
【課題】重掘削用で、着脱性が良く、ビット脱落が殆どなく、ロウ付け後の残留応力割れを抑制し、チップ欠損が少なく、軽量小型、長寿命で、掘削効率が高い、安価な接続構造と掘削爪を提供する。【解決手段】地盤を掘削する掘削手段に着脱自在に取り付けられる掘削爪１と掘削爪１を掘削手段に固定するホルダー３との連結構造であって、掘削爪１を掘削手段に固定するホルダー３の軸部３２が嵌合する嵌合穴１２を有し、チップ２を掘削力が作用する前後方向に２面以上で保持し、チップ２の後端部２１を嵌合穴１２の前方且つ近傍に配置し、嵌合穴１２の外周部に、外径が一様なピン４の挿入穴１３，１４を同一線上に２つ設け、これらがピン４との間にガタがないようにする。また、ホルダー３には、軸部３２に、ピン４を貫通して挿入する貫通穴３３を設け、ピン４との間で少なくとも一部にガタを有するように構成する。【選択図】図１
CONNECTION STRUCTURE AND EXCAVATION CLAW
連結構造及び掘削爪
KITAMURA MORIO (Autor:in) / TSUZUKI YOSHIO (Autor:in) / HORIKAWA YUKINORI (Autor:in) / FUJITA TOMOYA (Autor:in)
18.05.2017
Patent
Elektronische Ressource
Japanisch
IPC:
E21B
EARTH OR ROCK DRILLING
,
Erd- oder Gesteinsbohren
/
E02F
Baggern
,
DREDGING
/
E21C
Bergbau oder Steinbruchbetrieb
,
MINING OR QUARRYING
/
F16B
DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES
,
Vorrichtungen zum Befestigen oder Sichern von Konstruktionselementen oder Maschinenteilen, z.B. Nägel, Bolzen, Schrauben, Sprengringe, Klemmen, Klammern oder Keile
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