DK400982A - HYDRAULIC CYLINDER WITH POSITION ERRORS - Google Patents

HYDRAULIC CYLINDER WITH POSITION ERRORS Download PDF

Info

Publication number
DK400982A
DK400982A DK400982A DK400982A DK400982A DK 400982 A DK400982 A DK 400982A DK 400982 A DK400982 A DK 400982A DK 400982 A DK400982 A DK 400982A DK 400982 A DK400982 A DK 400982A
Authority
DK
Denmark
Prior art keywords
bar
wiper
bore
piston
shaped
Prior art date
Application number
DK400982A
Other languages
Danish (da)
Inventor
Ronnie Franklin Burk
Original Assignee
Deere & Co
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 Deere & Co filed Critical Deere & Co
Publication of DK400982A publication Critical patent/DK400982A/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
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/28—Means for indicating the position, e.g. end of stroke
    • F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
    • F15B15/2853—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT using potentiometers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Vehicle Body Suspensions (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Reciprocating Pumps (AREA)
  • Looms (AREA)
  • Characterised By The Charging Evacuation (AREA)
  • Valve Device For Special Equipments (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

A piston (16) and rod (18) slide in a double acting cylinder with closed end (12) from which extends a bar (60) having a T-shaped cross-section with a cross piece (64) and stiffening web (66), the edges of which are rounded to engage and slide on the wall of a bore (22) in the piston rod (18), thus supporting the bar in a rigid manner. The face (68) of the cross piece (64) supports a potentiometer track which co-operates with a wiper (118) carried by an insulating carrier (110) fitted into the bore (22). The T-shaped bar (60) partitions the bore (22) into three chambers (65, 67, 69) which are in communication at the distal end of the bar. The carrier (110) is shaped to close the chamber (65) containing the wiper so that there is no fluid flow past the wiper as the piston (16) moves.
DK400982A 1981-09-08 1982-09-08 HYDRAULIC CYLINDER WITH POSITION ERRORS DK400982A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US30033181A 1981-09-08 1981-09-08

Publications (1)

Publication Number Publication Date
DK400982A true DK400982A (en) 1983-03-09

Family

ID=23158660

Family Applications (1)

Application Number Title Priority Date Filing Date
DK400982A DK400982A (en) 1981-09-08 1982-09-08 HYDRAULIC CYLINDER WITH POSITION ERRORS

Country Status (11)

Country Link
EP (1) EP0074266B1 (en)
JP (1) JPS5854208A (en)
AT (1) ATE18286T1 (en)
AU (1) AU549902B2 (en)
BR (1) BR8205185A (en)
CA (1) CA1180916A (en)
DE (2) DE3269407D1 (en)
DK (1) DK400982A (en)
ES (1) ES515508A0 (en)
MX (1) MX154307A (en)
ZA (1) ZA826527B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE436072B (en) * 1983-03-22 1984-11-05 Hara Ab POTENTIOMETER DEVICE FOR DETERMINATION OF PHYSICAL HYDRAULIC PISTONS AND SIMILAR
DE3744254A1 (en) * 1987-12-24 1989-07-13 Integral Hydraulik Co Linear potentiometer which is operated under oil
US6725761B1 (en) 2002-09-30 2004-04-27 Prince Manufacturing Corporation Spooling device assembly for hydraulic cylinder and method of assembling same
US8100045B2 (en) 2008-10-21 2012-01-24 Clark Equipment Company Hydraulic cylinder rod position sensor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3175094A (en) * 1962-05-24 1965-03-23 Guerin Engineering Inc Electrohydraulic actuator
FR1382342A (en) * 1963-11-09 1964-12-18 Mitchell Hydraulics Ltd Improvements to mechanical control devices actuated by pressurized fluid
US3412391A (en) * 1964-10-31 1968-11-19 Gullick Ltd Pressure-fluid-operated devices and means for indicating the condition thereof
US3726191A (en) * 1971-02-08 1973-04-10 Bunker Ramo Electrically controlled hydraulic system and transducer therefor

Also Published As

Publication number Publication date
ES8402054A1 (en) 1984-01-01
AU8745882A (en) 1983-03-17
AU549902B2 (en) 1986-02-20
EP0074266A1 (en) 1983-03-16
ES515508A0 (en) 1984-01-01
MX154307A (en) 1987-06-30
JPS5854208A (en) 1983-03-31
CA1180916A (en) 1985-01-15
ZA826527B (en) 1984-04-25
JPH0233883B2 (en) 1990-07-31
EP0074266B1 (en) 1986-02-26
DE74266T1 (en) 1983-08-04
DE3269407D1 (en) 1986-04-03
BR8205185A (en) 1983-08-16
ATE18286T1 (en) 1986-03-15

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Legal Events

Date Code Title Description
AHB Application shelved due to non-payment