JPS6439491A - Drilling device - Google Patents

Drilling device

Info

Publication number
JPS6439491A
JPS6439491A JP19523887A JP19523887A JPS6439491A JP S6439491 A JPS6439491 A JP S6439491A JP 19523887 A JP19523887 A JP 19523887A JP 19523887 A JP19523887 A JP 19523887A JP S6439491 A JPS6439491 A JP S6439491A
Authority
JP
Japan
Prior art keywords
channel parts
cutting edge
vertical channel
casing
edge pipe
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
JP19523887A
Other languages
Japanese (ja)
Inventor
Masaaki Hirose
Fumio Hiraga
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokyu Construction Co Ltd
Original Assignee
Tokyu Construction Co Ltd
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 by Tokyu Construction Co Ltd filed Critical Tokyu Construction Co Ltd
Priority to JP19523887A priority Critical patent/JPS6439491A/en
Publication of JPS6439491A publication Critical patent/JPS6439491A/en
Pending legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)

Abstract

PURPOSE: To avoid a release of engagement between a casing and a cutting edge pipe even when the casing is rotated in either direction by inserting engaging projections on the casing side into L-shaped channels on the cutting edge pipe side and then, closing the vertical channel parts with cover plates. CONSTITUTION: A cutting edge pipe 4 is inserted into an intermediate pipe 41 from the bottom of it and is integrally fitted thereto. In this case, engaging projections 43 are at first inserted into the vertical channel parts of L-shaped channels 44 and are inserted into circumferential channel parts by rotating the cutting edge pipe 4 at the ends of the channels. Then, cover plates 45 are fitted to the vertical channel parts of the L-shaped channels 44 from the outside and are welded to close the vertical channel parts.
JP19523887A 1987-08-06 1987-08-06 Drilling device Pending JPS6439491A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19523887A JPS6439491A (en) 1987-08-06 1987-08-06 Drilling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19523887A JPS6439491A (en) 1987-08-06 1987-08-06 Drilling device

Publications (1)

Publication Number Publication Date
JPS6439491A true JPS6439491A (en) 1989-02-09

Family

ID=16337782

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19523887A Pending JPS6439491A (en) 1987-08-06 1987-08-06 Drilling device

Country Status (1)

Country Link
JP (1) JPS6439491A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015001127A (en) * 2013-06-17 2015-01-05 三橋 満 Portable type electric earth auger
JP2021055273A (en) * 2019-09-27 2021-04-08 株式会社オトワコーエイ Head of boring casing

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60133189A (en) * 1983-12-20 1985-07-16 株式会社松沢基工 Casing auger construction method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60133189A (en) * 1983-12-20 1985-07-16 株式会社松沢基工 Casing auger construction method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015001127A (en) * 2013-06-17 2015-01-05 三橋 満 Portable type electric earth auger
JP2021055273A (en) * 2019-09-27 2021-04-08 株式会社オトワコーエイ Head of boring casing

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