[go: up one dir, main page]

DE19681624T1 - Method in a pressure medium system, in particular for using and controlling a lifting boom unit, in connection with a work machine - Google Patents

Method in a pressure medium system, in particular for using and controlling a lifting boom unit, in connection with a work machine

Info

Publication number
DE19681624T1
DE19681624T1 DE19681624T DE19681624T DE19681624T1 DE 19681624 T1 DE19681624 T1 DE 19681624T1 DE 19681624 T DE19681624 T DE 19681624T DE 19681624 T DE19681624 T DE 19681624T DE 19681624 T1 DE19681624 T1 DE 19681624T1
Authority
DE
Germany
Prior art keywords
controlling
connection
work machine
pressure medium
medium system
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
DE19681624T
Other languages
German (de)
Other versions
DE19681624B4 (en
Inventor
Sakari Pinomaeki
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.)
Euroforest Yloejaervi Fi Oy
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
Publication of DE19681624T1 publication Critical patent/DE19681624T1/en
Application granted granted Critical
Publication of DE19681624B4 publication Critical patent/DE19681624B4/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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
    • 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
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/044—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the return line, i.e. "meter out"
    • F15B11/0445—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the return line, i.e. "meter out" with counterbalance valves, e.g. to prevent overrunning or for braking
    • 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
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/18—Control systems or devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/06—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs mounted for jibbing or luffing movements
    • B66C23/08—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs mounted for jibbing or luffing movements and adapted to move the loads in predetermined paths
    • B66C23/10—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs mounted for jibbing or luffing movements and adapted to move the loads in predetermined paths the paths being substantially horizontal; Level-luffing jib-cranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/54—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with pneumatic or hydraulic motors, e.g. for actuating jib-cranes on tractors
    • 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
    • E02F3/30—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 with a dipper-arm pivoted on a cantilever beam, i.e. boom
    • E02F3/301—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 with a dipper-arm pivoted on a cantilever beam, i.e. boom with more than two arms (boom included), e.g. two-part boom with additional dipper-arm
    • 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
    • E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
    • E02F3/43—Control of dipper or bucket position; Control of sequence of drive operations
    • 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
    • E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
    • E02F3/43—Control of dipper or bucket position; Control of sequence of drive operations
    • E02F3/435—Control of dipper or bucket position; Control of sequence of drive operations for dipper-arms, backhoes or the like
    • E02F3/436—Control of dipper or bucket position; Control of sequence of drive operations for dipper-arms, backhoes or the like for keeping the dipper in the horizontal position, e.g. self-levelling
    • 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
    • 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
    • E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function
    • 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
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2225—Control of flow rate; Load sensing arrangements using pressure-compensating valves
    • 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
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2225—Control of flow rate; Load sensing arrangements using pressure-compensating valves
    • E02F9/2228—Control of flow rate; Load sensing arrangements using pressure-compensating valves including an electronic controller
    • 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
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/20—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors controlling several interacting or sequentially-operating members
    • F15B11/205—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors controlling several interacting or sequentially-operating members the position of the actuator controlling the fluid flow to the subsequent actuator
    • 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50545—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using braking valves to maintain a back pressure
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50563—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure
    • F15B2211/50581—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure using counterbalance valves
    • F15B2211/5059—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure using counterbalance valves using double counterbalance valves
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/615—Filtering means
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting output members
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7114—Multiple output members, e.g. multiple hydraulic motors or cylinders with direct connection between the chambers of different actuators
    • F15B2211/7121—Multiple output members, e.g. multiple hydraulic motors or cylinders with direct connection between the chambers of different actuators the chambers being connected in series

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Automation & Control Theory (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Operation Control Of Excavators (AREA)
DE19681624T 1995-10-30 1996-10-22 Pressure medium system, in particular for applying and controlling a Hochhebeauslegereinheit, in conjunction with a work machine Revoked DE19681624B4 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI955172 1995-10-30
FI955172A FI955172A0 (en) 1995-10-30 1995-10-30 Foerfarande i ett tryckmediumsystem och ett tryckmediumsystem
PCT/FI1996/000559 WO1997016372A1 (en) 1995-10-30 1996-10-22 Method in a pressure medium system for employing and controlling a lifting boom unit particularly in connection with a work machine

Publications (2)

Publication Number Publication Date
DE19681624T1 true DE19681624T1 (en) 1998-12-10
DE19681624B4 DE19681624B4 (en) 2007-10-04

Family

ID=8544278

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19681624T Revoked DE19681624B4 (en) 1995-10-30 1996-10-22 Pressure medium system, in particular for applying and controlling a Hochhebeauslegereinheit, in conjunction with a work machine

Country Status (5)

Country Link
CA (1) CA2231498C (en)
DE (1) DE19681624B4 (en)
FI (2) FI955172A0 (en)
SE (1) SE525907C2 (en)
WO (1) WO1997016372A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI111938B (en) * 1999-07-06 2003-10-15 Plustech Oy Control system for a boom set on a terrain moving machine
DE102006018706A1 (en) 2006-04-21 2007-10-25 Robert Bosch Gmbh Hydraulic control arrangement
DE102007029355A1 (en) * 2007-06-26 2009-01-02 Robert Bosch Gmbh Hydraulic control arrangement
DE102007029358A1 (en) 2007-06-26 2009-01-02 Robert Bosch Gmbh Method and hydraulic control arrangement for pressure medium supply at least one hydraulic consumer
CN102605786B (en) * 2012-04-09 2014-07-16 山河智能装备股份有限公司 Pile pressing-in back stroke control system of static pile pressing-in machine and operation method of pile pressing-in back stroke control system
DE102012023562B3 (en) * 2012-12-01 2013-12-19 Festo Ag & Co. Kg Lifting device has control unit that is coupled for limiting the movement of movable wall portion, and primary and secondary chambers that are filled with an incompressible fluid from closed-force-feedback fluid system
FI124684B (en) * 2012-12-03 2014-12-15 Ponsse Oyj Crane
CN108516467B (en) * 2018-06-20 2019-10-25 徐州重型机械有限公司 The hydraulic control system and hoisting machinery of hoisting machinery
CN115231485A (en) * 2022-07-18 2022-10-25 湖南星邦智能装备股份有限公司 Leveling hydraulic control system and aerial work platform

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3884359A (en) * 1968-11-27 1975-05-20 Hopper Inc Level luffing crane
AT303647B (en) * 1970-06-23 1972-12-11 Boehler & Co Ag Geb Drill support
SE416538B (en) * 1979-04-02 1981-01-19 Hiab Foco Ab DEVICE FOR HYDRAULIC CRANES
JPS57195904A (en) * 1981-05-26 1982-12-01 Shimadzu Corp Hydraulic cylinder system
GB8404005D0 (en) * 1984-02-15 1984-03-21 Boart Int Ltd Drilling boom
SE454351B (en) * 1986-09-01 1988-04-25 Osa Ab DEVICE FOR LEVELING A TOOL FITTING TO A WEEKLY CRANE
DE4009163A1 (en) * 1990-03-02 1991-09-05 Schwing Gmbh F EXCAVATORS WITH AUTOMATIC PARALLEL POSITIONING HIS HAND-CONTROLLABLE WORK TOOL AND ARM SYSTEM THROUGH SENSORS
FI90584C (en) * 1991-04-10 1994-02-25 Seppo Ensio Nisula Method and apparatus for conducting a pressure medium to actuators

Also Published As

Publication number Publication date
SE525907C2 (en) 2005-05-24
FI122922B (en) 2012-08-31
WO1997016372A1 (en) 1997-05-09
CA2231498C (en) 2005-12-13
CA2231498A1 (en) 1997-05-09
FI980558A0 (en) 1998-03-12
FI955172A0 (en) 1995-10-30
SE9801290L (en) 1998-04-15
DE19681624B4 (en) 2007-10-04
SE9801290D0 (en) 1998-04-15
FI980558A7 (en) 1998-03-12

Similar Documents

Publication Publication Date Title
DE59708539D1 (en) Hydraulic actuator and method for bleeding a hydraulic actuator
DE69521345D1 (en) METHOD FOR DEGRADING CELLULOSE-CONTAINING FLUIDS DURING COMPLETE WORK IN OIL AND GAS HOLES
DE69733809D1 (en) METHOD FOR CONTROLLING A COMMUNICATION SYSTEM
DE69712564D1 (en) Device for controlling a hydraulic excavator
DE59400368D1 (en) Brake system with a force generating device for generating a reversible working stroke
DE69522402D1 (en) Process for controlling a central tire pressure control system
DE69524760D1 (en) METHOD FOR FORCING A HIERARCHICAL CALL STRUCTURE IN ASYNCHRONOUS REAL-TIME SOFTWARE APPLICATIONS
DE69629342D1 (en) METHOD AND DEVICE FOR REACHING A CONNECTION IN A COMMUNICATION SYSTEM
DE69520729D1 (en) Printer system for executing a printer job
DE4393919D2 (en) Method for controlling a torque transmission system
DE59605120D1 (en) METHOD FOR FILLING CONTAINERS WITH A LIQUID UNDER PRESSURE
ATA23590A (en) METHOD FOR PRODUCING A HIGH PRESSURE HOSE CONNECTION AND HIGH PRESSURE HOSE CONNECTION
ATE195106T1 (en) METHOD FOR CONTROLLING A TURRET REELER
DE69717460D1 (en) METHOD FOR CONTROLLING A SCREEN PRINTING MACHINE
DE68926911D1 (en) METHOD AND DEVICE FOR AUTOMATICALLY CONTROLLING AN ELECTRONICALLY ACTUATED HYDRAULIC CONSTRUCTION MACHINE
DE69812067D1 (en) METHOD OF LIFTING EXTENDED TOOLING MACHINES, DEVICE FOR CARRYING OUT THE METHOD AND MACHINE TOOL WITH SUCH A DEVICE
DE50000975D1 (en) METHOD FOR GRINDING CONVEX TREADS AND EXTERNAL DIAMETERS ON WAVE-SHAPED WORKPIECES IN A CLAMPING UP AND GRINDING MACHINE FOR IMPLEMENTING THE METHOD
DE69316841D1 (en) Method and control device for clamping a workpiece in a machine tool
DE19681624T1 (en) Method in a pressure medium system, in particular for using and controlling a lifting boom unit, in connection with a work machine
DE4497734T1 (en) Method for setting the position of a pressure piston and control unit for the pressure piston of a bending press
DE69609508D1 (en) METHOD FOR GRINDING AND FINISHING A DIE
DE59706277D1 (en) Method for operating a machine tool
DE69406769D1 (en) Method and device for controlling the pressure in a spot welding machine
DE19781687T1 (en) Device and method for extending a crane boom and accommodating a crane boom extension
DE69817343D1 (en) HYDRAULIC DRIVE WITH CONSTANT PRESSURE IN A PRESSURE LINE

Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8125 Change of the main classification

Ipc: B66C 1320

8127 New person/name/address of the applicant

Owner name: PINOX OY, YLöJäRVI, FI

8181 Inventor (new situation)

Inventor name: PINOMäK, SAKARI, YLöJäRVI, FI

8363 Opposition against the patent
8327 Change in the person/name/address of the patent owner

Owner name: METPRO OY, YLOEJAERVI, FI

8327 Change in the person/name/address of the patent owner

Owner name: EUROFOREST OY,, YLOEJAERVI, FI

8331 Complete revocation