JPS6439497A - Reaming bit for propulsion - Google Patents

Reaming bit for propulsion

Info

Publication number
JPS6439497A
JPS6439497A JP19370187A JP19370187A JPS6439497A JP S6439497 A JPS6439497 A JP S6439497A JP 19370187 A JP19370187 A JP 19370187A JP 19370187 A JP19370187 A JP 19370187A JP S6439497 A JPS6439497 A JP S6439497A
Authority
JP
Japan
Prior art keywords
bit
reaming bit
reaming
hard ground
teeth
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
JP19370187A
Other languages
Japanese (ja)
Inventor
Motoyuki Takasu
Koichi Hara
Sumio Fukuda
Hisao Takeuchi
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
Koken Boring Machine Co Ltd
Original Assignee
Tokyu Construction Co Ltd
Koken Boring Machine 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, Koken Boring Machine Co Ltd filed Critical Tokyu Construction Co Ltd
Priority to JP19370187A priority Critical patent/JPS6439497A/en
Publication of JPS6439497A publication Critical patent/JPS6439497A/en
Pending legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

PURPOSE: To efficiently excavate general ground and hard ground without changing a reaming bit by providing a bit for general soil and the bit for the hard ground. CONSTITUTION: This reaming bit 1 is composed of the cylindrical main body 1 of a bottomed structure and the guide pipe 12 of a small diameter positioned on an open end side. The front surface of the cylindrical main body 11 is provided with a plurality of sets of the bits for which the two kinds of teeth 2 and a roller bit 3 are one set. During excavation by the reaming bit 1, the roller bit 3 for the hard ground performs excavation preceding the teeth 2 for the general soil at all times. Earth and sand fetched into the reaming bit 1 are discharged by a screw conveyor 5.
JP19370187A 1987-08-04 1987-08-04 Reaming bit for propulsion Pending JPS6439497A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19370187A JPS6439497A (en) 1987-08-04 1987-08-04 Reaming bit for propulsion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19370187A JPS6439497A (en) 1987-08-04 1987-08-04 Reaming bit for propulsion

Publications (1)

Publication Number Publication Date
JPS6439497A true JPS6439497A (en) 1989-02-09

Family

ID=16312348

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19370187A Pending JPS6439497A (en) 1987-08-04 1987-08-04 Reaming bit for propulsion

Country Status (1)

Country Link
JP (1) JPS6439497A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61151396A (en) * 1984-12-25 1986-07-10 株式会社イセキ開発工機 Shield tunnel excavating apparatus
JPS61155595A (en) * 1984-12-28 1986-07-15 東京瓦斯株式会社 Drilling head in non-cut-and-cover construction method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61151396A (en) * 1984-12-25 1986-07-10 株式会社イセキ開発工機 Shield tunnel excavating apparatus
JPS61155595A (en) * 1984-12-28 1986-07-15 東京瓦斯株式会社 Drilling head in non-cut-and-cover construction method

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