JPS55116925A - Stretchable leader apparatus - Google Patents

Stretchable leader apparatus

Info

Publication number
JPS55116925A
JPS55116925A JP2499479A JP2499479A JPS55116925A JP S55116925 A JPS55116925 A JP S55116925A JP 2499479 A JP2499479 A JP 2499479A JP 2499479 A JP2499479 A JP 2499479A JP S55116925 A JPS55116925 A JP S55116925A
Authority
JP
Japan
Prior art keywords
leader
subleader
lift block
guide rail
free
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
JP2499479A
Other languages
Japanese (ja)
Inventor
Shigehiro Tanaka
Yutaka Motohashi
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.)
Sanwa Kizai Co Ltd
Original Assignee
Sanwa Kizai 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 Sanwa Kizai Co Ltd filed Critical Sanwa Kizai Co Ltd
Priority to JP2499479A priority Critical patent/JPS55116925A/en
Publication of JPS55116925A publication Critical patent/JPS55116925A/en
Pending legal-status Critical Current

Links

Landscapes

  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Earth Drilling (AREA)

Abstract

PURPOSE: To facilitate the installation of the long-sized leader at job site so small as not to allow the leader to be erected by inserting a subleader into the main leader in such a manner as to be free to stretch.
CONSTITUTION: A subleader 5 is inserted into the main leader 4 in such a manner as to be free to stretch while a lift block 8 is inserted into the subleader 5 such in a manner as to be free to lift. A guide rail 11 is provided on the side of the main leader 4 while a guide rail 12 on the side of the lift block 8. When the lift block 8 comes in contact with the upper end of the main leader 4, both the rails 11 and 12 joins continuously. When the driving section 14 of the working machine is guided or withdrawn by both the rails, it moves up following the lift block 8. Thus, even when the subleader 5 is stretched, the driving section 14 can move up down freely with only the guide rail of single standard.
COPYRIGHT: (C)1980,JPO&Japio
JP2499479A 1979-03-03 1979-03-03 Stretchable leader apparatus Pending JPS55116925A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2499479A JPS55116925A (en) 1979-03-03 1979-03-03 Stretchable leader apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2499479A JPS55116925A (en) 1979-03-03 1979-03-03 Stretchable leader apparatus

Publications (1)

Publication Number Publication Date
JPS55116925A true JPS55116925A (en) 1980-09-08

Family

ID=12153523

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2499479A Pending JPS55116925A (en) 1979-03-03 1979-03-03 Stretchable leader apparatus

Country Status (1)

Country Link
JP (1) JPS55116925A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60172892U (en) * 1984-04-20 1985-11-15 大堀　正人 ground hole drilling machine
JPS6327591U (en) * 1986-08-06 1988-02-23

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60172892U (en) * 1984-04-20 1985-11-15 大堀　正人 ground hole drilling machine
JPS644953Y2 (en) * 1984-04-20 1989-02-08
JPS6327591U (en) * 1986-08-06 1988-02-23

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