JPH0321493U - - Google Patents

Info

Publication number
JPH0321493U
JPH0321493U JP8047389U JP8047389U JPH0321493U JP H0321493 U JPH0321493 U JP H0321493U JP 8047389 U JP8047389 U JP 8047389U JP 8047389 U JP8047389 U JP 8047389U JP H0321493 U JPH0321493 U JP H0321493U
Authority
JP
Japan
Prior art keywords
screw blade
drilling rod
shaft part
tip
drilling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8047389U
Other languages
English (en)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP8047389U priority Critical patent/JPH0321493U/ja
Publication of JPH0321493U publication Critical patent/JPH0321493U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)

Description

【図面の簡単な説明】
第1図乃至第4図は本考案の一実施例を示すも
ので、第1図は掘削ヘツドの正面図、第2図は同
側面図、第3図は第1図の−線に沿う横断上
面図、第4図は杭の埋込み施工の工程を示す図で
ある。また、第5図は拡大部を備えた掘削孔を示
す縦断面図、第6図は従来の掘削ヘツドを一部を
断面にて示す正面図、第7図は他の従来例を示す
第1図相当図である。 図面中、12……掘削ロツド、13……掘削孔
、13a……拡大部、14……掘削ヘツド、15
……シヤフト部、16……スクリユー羽根、17
……拡大掘削爪、18……支持部を示す。

Claims (1)

    【実用新案登録請求の範囲】
  1. 掘削装置の掘削ロツドの先端に設けられ、前記
    掘削ロツドに連なるシヤフト部とこのシヤフト部
    の外周に螺旋状に設けられたスクリユー羽根とを
    備えてなるものにおいて、前記掘削ロツドの逆回
    転時に先端部が前記スクリユー羽根よりも外側に
    突出する拡大掘削爪を、前記スクリユー羽根が形
    成する螺旋状の掘削土の通路内に位置して設けた
    ことを特徴とする掘削ヘツド。
JP8047389U 1989-07-07 1989-07-07 Pending JPH0321493U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8047389U JPH0321493U (ja) 1989-07-07 1989-07-07

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8047389U JPH0321493U (ja) 1989-07-07 1989-07-07

Publications (1)

Publication Number Publication Date
JPH0321493U true JPH0321493U (ja) 1991-03-04

Family

ID=31625567

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8047389U Pending JPH0321493U (ja) 1989-07-07 1989-07-07

Country Status (1)

Country Link
JP (1) JPH0321493U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999060680A1 (en) * 1998-05-20 1999-11-25 Koichi Wada Electric wire accessory

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999060680A1 (en) * 1998-05-20 1999-11-25 Koichi Wada Electric wire accessory

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