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GB1231585A - - Google Patents

Info

Publication number
GB1231585A
GB1231585A GB1231585DA GB1231585A GB 1231585 A GB1231585 A GB 1231585A GB 1231585D A GB1231585D A GB 1231585DA GB 1231585 A GB1231585 A GB 1231585A
Authority
GB
United Kingdom
Prior art keywords
boom
accumulator
power
digging
ram
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.)
Expired
Application number
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 filed Critical
Publication of GB1231585A publication Critical patent/GB1231585A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2217—Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

1,231,585. Scoop-arm machines. HY-MAC Ltd. 9 Sept., 1968 [9 June, 1967], No. 26651/67: Heading E1F. [Also in Division F1] An excavator comprises a pivoted boom 3 and an accumulator 9 operably coupled to the boom to receive and store fluid under pressure during downward movement of the boom and to release the stored fluid to assist upward movement of the boom. An isolating valve in the fluid circuit is cam-operated when the boom moves downward to a given position, to disconnect the accumulator from the boom so that full power can be used for digging. A flow regulating valve may be provided in the circuit to regulate the speed of upward movement of the boom or to hold the latter in a desired position. When the accumulator is disconnected from a ram 8 operatively connected to the boom the ram may be automatically connected to a source of power so that extra-power is provided for digging.
GB1231585D 1967-06-09 1967-06-09 Expired GB1231585A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2665167 1967-06-09

Publications (1)

Publication Number Publication Date
GB1231585A true GB1231585A (en) 1971-05-12

Family

ID=10247026

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1231585D Expired GB1231585A (en) 1967-06-09 1967-06-09

Country Status (1)

Country Link
GB (1) GB1231585A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4046270A (en) * 1974-06-06 1977-09-06 Marion Power Shovel Company, Inc. Power shovel and crowd system therefor
FR2537184A1 (en) * 1982-12-03 1984-06-08 Orenstein & Koppel Ag HYDRAULIC PROCESS AND CIRCUIT FOR SAVING ENERGY WHEN OPERATING A MANEUVERING CYLINDER ON A HYDRAULIC EXCAVATOR
WO1993011363A1 (en) * 1991-12-04 1993-06-10 Hydac Technology Gmbh Energy recovering device
WO1998017576A1 (en) * 1996-10-18 1998-04-30 Lars Bruun Device relating to a crane

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4046270A (en) * 1974-06-06 1977-09-06 Marion Power Shovel Company, Inc. Power shovel and crowd system therefor
FR2537184A1 (en) * 1982-12-03 1984-06-08 Orenstein & Koppel Ag HYDRAULIC PROCESS AND CIRCUIT FOR SAVING ENERGY WHEN OPERATING A MANEUVERING CYLINDER ON A HYDRAULIC EXCAVATOR
WO1993011363A1 (en) * 1991-12-04 1993-06-10 Hydac Technology Gmbh Energy recovering device
US5477677A (en) * 1991-12-04 1995-12-26 Hydac Technology Gmbh Energy recovery device
WO1998017576A1 (en) * 1996-10-18 1998-04-30 Lars Bruun Device relating to a crane

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees