JPS55132812A - Elastic leader - Google Patents
Elastic leaderInfo
- Publication number
- JPS55132812A JPS55132812A JP4052679A JP4052679A JPS55132812A JP S55132812 A JPS55132812 A JP S55132812A JP 4052679 A JP4052679 A JP 4052679A JP 4052679 A JP4052679 A JP 4052679A JP S55132812 A JPS55132812 A JP S55132812A
- Authority
- JP
- Japan
- Prior art keywords
- leader
- pipe body
- working
- working tool
- auxiliary
- 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.)
- Granted
Links
Landscapes
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Earth Drilling (AREA)
Abstract
PURPOSE: To make the length of a leader adjustable by a method wherein the pipe body of a leader is composed of two pipes slidably moving against each other and further an auxiliary elevating body is provided with respect to the leader for lifting and lowering working tools such as a hammer, auger etc.
CONSTITUTION: An inside pipe body 3 of a leader is housed in an outside pipe body thereof. When a working device A is positioned high, the length of the leader is increased by lifting the inside body 3. Next, when the working tool A is lifted by a wire 12, a grip part a rises along a guide pipe 1 and transfers to the auxiliary guide pipe 5 of an auxiliary elevating device 4. In addition, a stopper 6 makes the auxiliary elevating device 4 accompany the rising working tool A, rising under the quid ance of the inside pipe body 3 of the leader. In this way, the working tool A can be lifted up to the given height of the inside pipe body 3 by winding up the wire 12.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54040526A JPS5827370B2 (en) | 1979-04-04 | 1979-04-04 | telescopic leader |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54040526A JPS5827370B2 (en) | 1979-04-04 | 1979-04-04 | telescopic leader |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55132812A true JPS55132812A (en) | 1980-10-16 |
JPS5827370B2 JPS5827370B2 (en) | 1983-06-09 |
Family
ID=12582924
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54040526A Expired JPS5827370B2 (en) | 1979-04-04 | 1979-04-04 | telescopic leader |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5827370B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60192083A (en) * | 1984-03-10 | 1985-09-30 | 株式会社西圧 | Vertical hole drilling apparatus |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54153103U (en) * | 1978-04-15 | 1979-10-24 |
-
1979
- 1979-04-04 JP JP54040526A patent/JPS5827370B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54153103U (en) * | 1978-04-15 | 1979-10-24 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60192083A (en) * | 1984-03-10 | 1985-09-30 | 株式会社西圧 | Vertical hole drilling apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPS5827370B2 (en) | 1983-06-09 |
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