JPS6443695A - Casing expansion joint device in excavator - Google Patents

Casing expansion joint device in excavator

Info

Publication number
JPS6443695A
JPS6443695A JP19623887A JP19623887A JPS6443695A JP S6443695 A JPS6443695 A JP S6443695A JP 19623887 A JP19623887 A JP 19623887A JP 19623887 A JP19623887 A JP 19623887A JP S6443695 A JPS6443695 A JP S6443695A
Authority
JP
Japan
Prior art keywords
ground
protruded
groove
plate
retracted
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
JP19623887A
Other languages
Japanese (ja)
Inventor
Kaname Nakayama
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.)
Sunoco Inc R&M
Original Assignee
Sunoco Inc R&M
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 Sunoco Inc R&M filed Critical Sunoco Inc R&M
Priority to JP19623887A priority Critical patent/JPS6443695A/en
Publication of JPS6443695A publication Critical patent/JPS6443695A/en
Pending legal-status Critical Current

Links

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  • Earth Drilling (AREA)

Abstract

PURPOSE: To improve excavation efficiency by a method wherein the head of a screw anger is protruded or retracted from the lower end of a casing according to the state of a ground, such as a soft ground, a boulder stone ground, and a hard ground. CONSTITUTION: A pair of rectangular plate-form keys are protruded in positions situated facing each other in the direction of diameter from an inside coupling cylinder 12 connected to a rotary drive cylinder 11, a guide groove is formed between a stripe guide plate 16 of an outside coupling cylinder 13 connected to a casing 6 and a combtooth-like groove plate 17, and three stages of upper, middle, and lower lock grooves are respectively formed in the groove plate 17. Normally, a key is normally engaged with the middle state lock groove, when the key reaches a hard ground, it with the lower stage lock groove, and when it reaches a soft ground and a boulder stone ground, it with the upper stage lock groove. The augers 8 are protruded approximately to the same positions at the lower end of the respective casings 6 or protruded downward or retracted to an upward position, and excavation is practicable according to the condition of a ground.
JP19623887A 1987-08-07 1987-08-07 Casing expansion joint device in excavator Pending JPS6443695A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19623887A JPS6443695A (en) 1987-08-07 1987-08-07 Casing expansion joint device in excavator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19623887A JPS6443695A (en) 1987-08-07 1987-08-07 Casing expansion joint device in excavator

Publications (1)

Publication Number Publication Date
JPS6443695A true JPS6443695A (en) 1989-02-15

Family

ID=16354496

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19623887A Pending JPS6443695A (en) 1987-08-07 1987-08-07 Casing expansion joint device in excavator

Country Status (1)

Country Link
JP (1) JPS6443695A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0384115A (en) * 1989-08-25 1991-04-09 Matsuzawa Kiko:Kk Excavated casing
KR100891129B1 (en) * 2008-07-24 2009-04-03 (주)한국중기계 Pile case of auger for engineering work underground pile
KR101044485B1 (en) * 2009-12-30 2011-06-27 이규철 Casing for deep depth filing hole
EP2455388A1 (en) 2010-11-23 2012-05-23 LanthioPep B.V. Novel angiotensin type 2 (AT2) receptor agonists and uses thereof.
JP2021110094A (en) * 2020-01-06 2021-08-02 株式会社エヌテイマテックス casing

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0384115A (en) * 1989-08-25 1991-04-09 Matsuzawa Kiko:Kk Excavated casing
KR100891129B1 (en) * 2008-07-24 2009-04-03 (주)한국중기계 Pile case of auger for engineering work underground pile
KR101044485B1 (en) * 2009-12-30 2011-06-27 이규철 Casing for deep depth filing hole
EP2455388A1 (en) 2010-11-23 2012-05-23 LanthioPep B.V. Novel angiotensin type 2 (AT2) receptor agonists and uses thereof.
WO2012070936A1 (en) 2010-11-23 2012-05-31 Lanthiopep B.V. Novel angiotensin type 2 (at2) receptor agonists and uses thereof
JP2021110094A (en) * 2020-01-06 2021-08-02 株式会社エヌテイマテックス casing

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