JPS5673720A - Expansible leader - Google Patents
Expansible leaderInfo
- Publication number
- JPS5673720A JPS5673720A JP15159079A JP15159079A JPS5673720A JP S5673720 A JPS5673720 A JP S5673720A JP 15159079 A JP15159079 A JP 15159079A JP 15159079 A JP15159079 A JP 15159079A JP S5673720 A JPS5673720 A JP S5673720A
- Authority
- JP
- Japan
- Prior art keywords
- leader
- working device
- cylinder
- guide pipe
- lifted
- 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 raise the working efficiency by providing a freely expansible leader by which a working device, e.g., hammer, auger, etc., is elevated.
CONSTITUTION: Leader cylinders 1 and 1' are extended by an oil-pressure cylinder 5 and a working device 10, e.g., auger, etc., is mounted to the guide pipe 2 of the outermost leader cylinder 1. When said working device 10 is lifted by a wire, etc., an excavator 11 is transferred from the guide pipe 2 to the guide pipe 2' of an auxiliary elevator B, and when the device 10 is further lifred, the excavator 11 is coupled by a stopper 3 and accompanied by the auxiliary elevator B. When it is furthermore lifted, the auxiliry elevator B is transferred to the carrier C of the leader cylinder 1" and accompanied by the auxiliary elevator B and the carrier C by a coupler 4, the working device 10 is lifted along the leader cylinder 1".
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15159079A JPS5929731B2 (en) | 1979-11-21 | 1979-11-21 | telescopic leader |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15159079A JPS5929731B2 (en) | 1979-11-21 | 1979-11-21 | telescopic leader |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5673720A true JPS5673720A (en) | 1981-06-18 |
JPS5929731B2 JPS5929731B2 (en) | 1984-07-23 |
Family
ID=15521832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15159079A Expired JPS5929731B2 (en) | 1979-11-21 | 1979-11-21 | telescopic leader |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5929731B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS618839U (en) * | 1984-06-22 | 1986-01-20 | 株式会社 岡崎製作所 | metal thermometer |
-
1979
- 1979-11-21 JP JP15159079A patent/JPS5929731B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5929731B2 (en) | 1984-07-23 |
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