SE9903794L - Hydraulic power supply - Google Patents

Hydraulic power supply

Info

Publication number
SE9903794L
SE9903794L SE9903794A SE9903794A SE9903794L SE 9903794 L SE9903794 L SE 9903794L SE 9903794 A SE9903794 A SE 9903794A SE 9903794 A SE9903794 A SE 9903794A SE 9903794 L SE9903794 L SE 9903794L
Authority
SE
Sweden
Prior art keywords
piston
chamber
appliance
actuator
power supply
Prior art date
Application number
SE9903794A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE517549C2 (en
SE9903794D0 (en
Inventor
Lennart Axelsson
Original Assignee
Vreten Ab
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 Vreten Ab filed Critical Vreten Ab
Priority to SE9903794A priority Critical patent/SE517549C2/en
Publication of SE9903794D0 publication Critical patent/SE9903794D0/en
Priority to AU11832/01A priority patent/AU1183201A/en
Priority to PCT/SE2000/002013 priority patent/WO2001029329A1/en
Publication of SE9903794L publication Critical patent/SE9903794L/en
Publication of SE517549C2 publication Critical patent/SE517549C2/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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1476—Special return means
    • 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
    • E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
    • E02F3/7609—Scraper blade mounted forwardly of the tractor on a pair of pivoting arms which are linked to the sides of the tractor, e.g. bulldozers
    • 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
    • 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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/021—Installations or systems with accumulators used for damping
    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1409—Characterised by the construction of the motor unit of the straight-cylinder type with two or more independently movable working pistons

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Actuator (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

The invention relates to a hydraulic actuator (3) with a casing (10), a piston (12) which is movable in the casing and divides it into a first chamber (18) and a second chamber (16), and a piston rod (14) fixedly connected with the piston (12). Moreover the piston is movable towards an abutment surface (30) which is adapted to take up, against spring action, part of the weight of the appliance when the appliance (2) is in the second lowered position. Preferably the actuator has a second piston (22) which runs along the piston rod (14) and which is adapted to divide the first chamber into a third chamber (18a) and a fourth chamber (18b), a surface of said second piston facing the first piston constituting said abutment surface (30). The actuator is intended to be used to operate a vertically adjustable appliance which is mounted on a vehicle.
SE9903794A 1999-10-19 1999-10-19 Hydraulic power tool for a tool intended to be driven by vehicles SE517549C2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE9903794A SE517549C2 (en) 1999-10-19 1999-10-19 Hydraulic power tool for a tool intended to be driven by vehicles
AU11832/01A AU1183201A (en) 1999-10-19 2000-10-18 Hydraulic actuator
PCT/SE2000/002013 WO2001029329A1 (en) 1999-10-19 2000-10-18 Hydraulic actuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9903794A SE517549C2 (en) 1999-10-19 1999-10-19 Hydraulic power tool for a tool intended to be driven by vehicles

Publications (3)

Publication Number Publication Date
SE9903794D0 SE9903794D0 (en) 1999-10-19
SE9903794L true SE9903794L (en) 2001-04-20
SE517549C2 SE517549C2 (en) 2002-06-18

Family

ID=20417433

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9903794A SE517549C2 (en) 1999-10-19 1999-10-19 Hydraulic power tool for a tool intended to be driven by vehicles

Country Status (3)

Country Link
AU (1) AU1183201A (en)
SE (1) SE517549C2 (en)
WO (1) WO2001029329A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103758817A (en) * 2014-02-17 2014-04-30 王建虎 Supporting cylinder and spackling machine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3893518A (en) * 1974-03-11 1975-07-08 Frink Sno Plows Blade rotating, blade tripping and shock absorbing hydraulic cylinder for scraper-type snow plows
GB2016980A (en) * 1978-01-31 1979-10-03 B & G Hydraulics Ltd Apparatus for operating hydraulic rams
IT1107816B (en) * 1978-05-26 1985-12-02 Pelazza Andrea IMPROVED SNOW PUTTING TOOL
US4622884A (en) * 1981-04-10 1986-11-18 Buchl Andrew F Floating piston depth control apparatus
US5921010A (en) * 1997-02-12 1999-07-13 Little Falls Machine, Inc. Flow blade operating system

Also Published As

Publication number Publication date
SE517549C2 (en) 2002-06-18
SE9903794D0 (en) 1999-10-19
WO2001029329A1 (en) 2001-04-26
AU1183201A (en) 2001-04-30

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Legal Events

Date Code Title Description
NUG Patent has lapsed