GB2022220A - Hydraulic control systems - Google Patents

Hydraulic control systems

Info

Publication number
GB2022220A
GB2022220A GB7919567A GB7919567A GB2022220A GB 2022220 A GB2022220 A GB 2022220A GB 7919567 A GB7919567 A GB 7919567A GB 7919567 A GB7919567 A GB 7919567A GB 2022220 A GB2022220 A GB 2022220A
Authority
GB
United Kingdom
Prior art keywords
shovel
hydraulic control
control systems
function
lift
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
GB7919567A
Other versions
GB2022220B (en
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.)
JC Bamford Excavators Ltd
Original Assignee
JC Bamford Excavators Ltd
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 JC Bamford Excavators Ltd filed Critical JC Bamford Excavators Ltd
Priority to GB7919567A priority Critical patent/GB2022220B/en
Publication of GB2022220A publication Critical patent/GB2022220A/en
Application granted granted Critical
Publication of GB2022220B publication Critical patent/GB2022220B/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
    • E02F9/2004—Control mechanisms, e.g. control levers

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

In a control system for a shovel mounted on an excavating vehicle a linkage system interconnects two hydraulic slide valves (10, 11) so that a lift/lower function of the shovel, and a tipping function may be controlled simultaneously to maintain the shovel in a particular orientation, for example level to the grade surface, whilst lifting or lowering. <IMAGE>
GB7919567A 1978-05-16 1979-06-05 Hydraulic control systems Expired GB2022220B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7919567A GB2022220B (en) 1978-05-16 1979-06-05 Hydraulic control systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1973078 1978-05-16
GB7919567A GB2022220B (en) 1978-05-16 1979-06-05 Hydraulic control systems

Publications (2)

Publication Number Publication Date
GB2022220A true GB2022220A (en) 1979-12-12
GB2022220B GB2022220B (en) 1982-08-04

Family

ID=26254217

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7919567A Expired GB2022220B (en) 1978-05-16 1979-06-05 Hydraulic control systems

Country Status (1)

Country Link
GB (1) GB2022220B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0084067A2 (en) * 1982-01-14 1983-07-27 J.C. Bamford Excavators Limited Loader/excavating vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0084067A2 (en) * 1982-01-14 1983-07-27 J.C. Bamford Excavators Limited Loader/excavating vehicle
EP0084067A3 (en) * 1982-01-14 1983-09-28 J.C. Bamford Excavators Limited Loader/excavating vehicle

Also Published As

Publication number Publication date
GB2022220B (en) 1982-08-04

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee