[go: up one dir, main page]

SE8003383L - SWITCHING SYSTEM, Separate for a gravel excavator - Google Patents

SWITCHING SYSTEM, Separate for a gravel excavator

Info

Publication number
SE8003383L
SE8003383L SE8003383A SE8003383A SE8003383L SE 8003383 L SE8003383 L SE 8003383L SE 8003383 A SE8003383 A SE 8003383A SE 8003383 A SE8003383 A SE 8003383A SE 8003383 L SE8003383 L SE 8003383L
Authority
SE
Sweden
Prior art keywords
implement
centre
cylinder
slewing
excavating
Prior art date
Application number
SE8003383A
Other languages
Unknown language ( )
Swedish (sv)
Inventor
S Lindblom
S-E Dahlin
Original Assignee
Volvo Bm
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 Volvo Bm filed Critical Volvo Bm
Priority to SE8003383A priority Critical patent/SE8003383L/en
Priority to DK199681A priority patent/DK199681A/en
Priority to NO811512A priority patent/NO811512L/en
Priority to GB8113793A priority patent/GB2075467A/en
Publication of SE8003383L publication Critical patent/SE8003383L/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/38—Cantilever beams, i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms; Dipper-arms, e.g. manufacturing processes, forms, geometry or materials used for dipper-arms; Bucket-arms
    • E02F3/382—Connections to the frame; Supports for booms or arms
    • E02F3/384—Connections to the frame; Supports for booms or arms the boom being pivotable relative to the frame about a vertical axis

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

A slewing system for an excavating implement (6) has, in addition to two symmetrically arranged lateral pivot cylinders (8, 9), an additional pivot cylinder (16) located in a plane of symmetry therebetween and lying on a different level from the lateral cylinders (8, 9) and the pivot shaft (5) of the excavating implement (6). The centre cylinder (16) is jointed to a point of attachment (19) on the excavating implement (6) located on its centre line. The lever arm of the centre cylinder (16) about the axis of rotation (5) of the implement (6) is thus zero when the implement is in its centre position (as shown) and increases with increasing slewing angle. When the implement is swung out 90 DEG , the centre cylinder (16) has a maximum slewing effect. Flow limitors (33, 35) in the feeder lines (31, 32) of the centre cylinder, cause the centre cylinder to be used at the same time as a brake for automatically reducing the speed of slewing as the excavating implement approaches its end positions. <IMAGE>
SE8003383A 1980-05-06 1980-05-06 SWITCHING SYSTEM, Separate for a gravel excavator SE8003383L (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE8003383A SE8003383L (en) 1980-05-06 1980-05-06 SWITCHING SYSTEM, Separate for a gravel excavator
DK199681A DK199681A (en) 1980-05-06 1981-05-05 SWITCHING INSTALLATION IS FOR A GRAVING UNIT
NO811512A NO811512L (en) 1980-05-06 1981-05-05 SWITCHING DEVICE, SPECIAL FOR A GRAVING UNIT.
GB8113793A GB2075467A (en) 1980-05-06 1981-05-06 Slewing device, especially for excavating implement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8003383A SE8003383L (en) 1980-05-06 1980-05-06 SWITCHING SYSTEM, Separate for a gravel excavator

Publications (1)

Publication Number Publication Date
SE8003383L true SE8003383L (en) 1981-11-07

Family

ID=20340907

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8003383A SE8003383L (en) 1980-05-06 1980-05-06 SWITCHING SYSTEM, Separate for a gravel excavator

Country Status (4)

Country Link
DK (1) DK199681A (en)
GB (1) GB2075467A (en)
NO (1) NO811512L (en)
SE (1) SE8003383L (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4419040A (en) * 1981-12-10 1983-12-06 J. I. Case Company Backhoe swing mechanism
US4389153A (en) * 1981-12-10 1983-06-21 J. I. Case Company Backhoe swing mechanism
GB9414694D0 (en) * 1994-07-21 1994-09-07 Thwaites Limited A dumper vehicle

Also Published As

Publication number Publication date
DK199681A (en) 1981-11-07
NO811512L (en) 1981-11-09
GB2075467A (en) 1981-11-18

Similar Documents

Publication Publication Date Title
JPS5552437A (en) Working instrument controller
FR2536733B1 (en) CRANE BOOM WITH VARIABLE RANGE, WITH AUTOMATIC BALANCING DEVICE
DE3066345D1 (en) Engine for cleaning ponds, marshes or canals
GB989580A (en) Improvements in or relating to hydraulically actuated shovel excavators
SE8003383L (en) SWITCHING SYSTEM, Separate for a gravel excavator
ES269665A1 (en) Mechanical shovel capable of working as a lifting device or loader
GB1429413A (en) Underwater excavating equipment for a vessel
ES291030A1 (en) Excavating apparatus
SE8502014L (en) CRANE
SE9202279L (en) Rocker arm crane with linkage device that switches the waypoint between the work area and the parking position
IE822487L (en) Earthmoving machine
JPS57127024A (en) Safety device for hydraulic excavator
GB1261805A (en) Scraping apparatus for an excavator
GB910576A (en) Improvements in or relating to multiple-purpose power shovels
JPS5631944A (en) Hydraulic excavator
GB883969A (en) Improvements in excavators
ATE55037T1 (en) TURNING DEVICE FOR ROTARY PLOWS.
GB1265817A (en)
GB762754A (en) Improvements in and relating to excavating and like machines
KR890008811Y1 (en) Excavator
GB1153533A (en) Tractor-Mountable Loader Bucket Unit
GB1166524A (en) Improvements in or relating to Excavators
GB749500A (en) Ditch and like cleaning machine
GB980137A (en) Improvements relating to mechanical excavators
JPS5581938A (en) Operating apparatus for excavator/loader

Legal Events

Date Code Title Description
NAV Patent application has lapsed

Ref document number: 8003383-0