JPS55108541A - Multi-stage telescopic arm of hydraulic shovel - Google Patents
Multi-stage telescopic arm of hydraulic shovelInfo
- Publication number
- JPS55108541A JPS55108541A JP1460179A JP1460179A JPS55108541A JP S55108541 A JPS55108541 A JP S55108541A JP 1460179 A JP1460179 A JP 1460179A JP 1460179 A JP1460179 A JP 1460179A JP S55108541 A JPS55108541 A JP S55108541A
- Authority
- JP
- Japan
- Prior art keywords
- arm
- telescopic arm
- hydraulic
- hydraulic shovel
- telescopic
- 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
- Earth Drilling (AREA)
Abstract
PURPOSE: To increase excavation depth to a desired value by a method wherein an intermediate arm and a top arm are fitted telescopically in the order mention and vertically movable on the base end arm provided for up and downward tilting motion on the boom of a hydraulic shovel.
CONSTITUTION: While the boom 2 and the hydraulic cylinder 3 for arm of a hydraulic shovel are, associated with each other, a telescopic arm is led to a desired position above work place and kept almost perpendicular. A hydraulic motor 21 is driven by an elevator 20 to rewind elevating rope 16 so that a top arm 11n is lowered from the base end arm 11a to work place. When the telescopic arm extends from minimum length position, the intermediate arm 11b can directly determine the extension position thereof in accordance with the positions of arms 11n and 11a by the intermediate support ropes 14 and 15 hung on sheaves 12 and 13. The telescopic arm can therefore smoothly extended downward. When the telescopic arm is contracted, the arm 11n rises to come to minimum length position. Then, loading is possible with the arm 11n operated like an ordinary type arm of hydraulic shovels.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1460179A JPS55108541A (en) | 1979-02-10 | 1979-02-10 | Multi-stage telescopic arm of hydraulic shovel |
CA339,500A CA1132101A (en) | 1978-11-24 | 1979-11-08 | Excavator having telescopic arm assembly |
FR7928730A FR2442304A1 (en) | 1978-11-24 | 1979-11-21 | TUBULAR DEVICE FOR USE AS AN ARM IN AN EXCAVATOR |
DE19792947161 DE2947161A1 (en) | 1978-11-24 | 1979-11-22 | ROD AS AN ARM FOR AN EXCAVATOR |
US06/327,911 US4436476A (en) | 1978-11-24 | 1981-12-07 | Rod device for use as an arm of an excavator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1460179A JPS55108541A (en) | 1979-02-10 | 1979-02-10 | Multi-stage telescopic arm of hydraulic shovel |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55108541A true JPS55108541A (en) | 1980-08-20 |
JPS6217047B2 JPS6217047B2 (en) | 1987-04-15 |
Family
ID=11865704
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1460179A Granted JPS55108541A (en) | 1978-11-24 | 1979-02-10 | Multi-stage telescopic arm of hydraulic shovel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55108541A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5980827A (en) * | 1982-10-27 | 1984-05-10 | Junji Ogawa | Expandible arm of oil-pressure shovel |
JPS6158264U (en) * | 1984-09-21 | 1986-04-19 | ||
JPS6187035A (en) * | 1985-10-04 | 1986-05-02 | Hitachi Constr Mach Co Ltd | Rope type multi-stage expandible arm for construction machine |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS454605Y1 (en) * | 1965-12-14 | 1970-03-03 | ||
JPS4737799U (en) * | 1972-05-16 | 1972-12-26 | ||
JPS4832172U (en) * | 1971-08-11 | 1973-04-18 | ||
JPS508882U (en) * | 1973-05-19 | 1975-01-29 | ||
JPS51735U (en) * | 1974-06-18 | 1976-01-06 | ||
JPS5224631Y2 (en) * | 1975-02-08 | 1977-06-04 | ||
JPS5328705A (en) * | 1976-08-27 | 1978-03-17 | Takeda Chemical Industries Ltd | Heattresisting paper |
-
1979
- 1979-02-10 JP JP1460179A patent/JPS55108541A/en active Granted
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS454605Y1 (en) * | 1965-12-14 | 1970-03-03 | ||
JPS4832172U (en) * | 1971-08-11 | 1973-04-18 | ||
JPS4737799U (en) * | 1972-05-16 | 1972-12-26 | ||
JPS508882U (en) * | 1973-05-19 | 1975-01-29 | ||
JPS51735U (en) * | 1974-06-18 | 1976-01-06 | ||
JPS5224631Y2 (en) * | 1975-02-08 | 1977-06-04 | ||
JPS5328705A (en) * | 1976-08-27 | 1978-03-17 | Takeda Chemical Industries Ltd | Heattresisting paper |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5980827A (en) * | 1982-10-27 | 1984-05-10 | Junji Ogawa | Expandible arm of oil-pressure shovel |
JPH0213693B2 (en) * | 1982-10-27 | 1990-04-05 | Junji Ogawa | |
JPS6158264U (en) * | 1984-09-21 | 1986-04-19 | ||
JPS6187035A (en) * | 1985-10-04 | 1986-05-02 | Hitachi Constr Mach Co Ltd | Rope type multi-stage expandible arm for construction machine |
JPS6347849B2 (en) * | 1985-10-04 | 1988-09-26 | Hitachi Construction Machinery |
Also Published As
Publication number | Publication date |
---|---|
JPS6217047B2 (en) | 1987-04-15 |
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