SE8602348D0 - HYDRAULIC SYSTEM FOR TREE FELLING HEADER - Google Patents

HYDRAULIC SYSTEM FOR TREE FELLING HEADER

Info

Publication number
SE8602348D0
SE8602348D0 SE8602348A SE8602348A SE8602348D0 SE 8602348 D0 SE8602348 D0 SE 8602348D0 SE 8602348 A SE8602348 A SE 8602348A SE 8602348 A SE8602348 A SE 8602348A SE 8602348 D0 SE8602348 D0 SE 8602348D0
Authority
SE
Sweden
Prior art keywords
tree
valve means
unit
hydraulic
devices
Prior art date
Application number
SE8602348A
Other languages
Swedish (sv)
Other versions
SE464678B (en
SE8602348L (en
Inventor
Sakari Pinomeki
Original Assignee
Pinomaeki Sakari
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 Pinomaeki Sakari filed Critical Pinomaeki Sakari
Publication of SE8602348D0 publication Critical patent/SE8602348D0/en
Publication of SE8602348L publication Critical patent/SE8602348L/en
Publication of SE464678B publication Critical patent/SE464678B/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • F15B11/10—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor in which the servomotor position is a function of the pressure also pressure regulators as operating means for such systems, the device itself may be a position indicating system
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G23/00—Forestry
    • A01G23/02—Transplanting, uprooting, felling or delimbing trees
    • A01G23/08—Felling trees

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Ecology (AREA)
  • Forests & Forestry (AREA)
  • Environmental Sciences (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Shovels (AREA)
  • Working Measures On Existing Buildindgs (AREA)

Abstract

A hydraulic system for a tree-felling unit comprises valve means 6,8 and connecting lines 11,13 for feeding hydraulic fluid through the said valve means to and from hydraulic working devices 2,3,4,5 for the members for tilting of the unit, for rotation of the unit, for gripping of the tree and for cross-cutting of the tree. The hydraulic working devices 2,3,4,5, which are driven in sequence during the work cycle, are connected in pairs to the same valve means. The control devices 2,3 for the tree-felling unit are connected to separate valve means 6,8 and the processor devices 4,5 for the tree are connected to separate valve means 6,8. The flow of the hydraulic fluid to the working devices 3,5 is regulated by a control valve 17, which is driven by the pressure in the hydraulic fluid lines belonging to the unit. <IMAGE>
SE8602348A 1985-05-27 1986-05-23 Hydraulic system for tree-felling unit SE464678B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI852096A FI78972C (en) 1985-05-27 1985-05-27 Pressure medium system for precipitating units

Publications (3)

Publication Number Publication Date
SE8602348D0 true SE8602348D0 (en) 1986-05-23
SE8602348L SE8602348L (en) 1986-11-28
SE464678B SE464678B (en) 1991-06-03

Family

ID=8520876

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8602348A SE464678B (en) 1985-05-27 1986-05-23 Hydraulic system for tree-felling unit

Country Status (3)

Country Link
FI (1) FI78972C (en)
SE (1) SE464678B (en)
SU (1) SU1540662A3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI91587C (en) * 1989-12-18 1996-10-22 Plustech Oy System for controlling the pressing elements of a harvester, in particular a grapple harvester
FI90613C (en) * 1990-10-08 1994-03-10 Plustech Oy Tree feeding device at the end of a swing bar of a tree processing machine, in particular of a gripper harvester

Also Published As

Publication number Publication date
SE464678B (en) 1991-06-03
FI78972C (en) 1989-10-10
FI852096A0 (en) 1985-05-27
FI78972B (en) 1989-06-30
FI852096L (en) 1986-11-28
SU1540662A3 (en) 1990-01-30
SE8602348L (en) 1986-11-28

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