JPS55108541A - Multi-stage telescopic arm of hydraulic shovel - Google Patents

Multi-stage telescopic arm of hydraulic shovel

Info

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
Application number
JP1460179A
Other languages
Japanese (ja)
Other versions
JPS6217047B2 (en
Inventor
Ryutaro Yoritomi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP1460179A priority Critical patent/JPS55108541A/en
Priority to CA339,500A priority patent/CA1132101A/en
Priority to FR7928730A priority patent/FR2442304A1/en
Priority to DE19792947161 priority patent/DE2947161A1/en
Publication of JPS55108541A publication Critical patent/JPS55108541A/en
Priority to US06/327,911 priority patent/US4436476A/en
Publication of JPS6217047B2 publication Critical patent/JPS6217047B2/ja
Granted legal-status Critical Current

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
JP1460179A 1978-11-24 1979-02-10 Multi-stage telescopic arm of hydraulic shovel Granted JPS55108541A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (7)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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