ZA826989B - Hydraulic ram - Google Patents

Hydraulic ram

Info

Publication number
ZA826989B
ZA826989B ZA826989A ZA826989A ZA826989B ZA 826989 B ZA826989 B ZA 826989B ZA 826989 A ZA826989 A ZA 826989A ZA 826989 A ZA826989 A ZA 826989A ZA 826989 B ZA826989 B ZA 826989B
Authority
ZA
South Africa
Prior art keywords
hydraulic ram
ram
hydraulic
Prior art date
Application number
ZA826989A
Inventor
Harry Rosenberg
Karl Heinz Plester
Original Assignee
Gewerk Eisenhuette Westfalia
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 Gewerk Eisenhuette Westfalia filed Critical Gewerk Eisenhuette Westfalia
Publication of ZA826989B publication Critical patent/ZA826989B/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
    • F15B15/2807—Position switches, i.e. means for sensing of discrete positions only, e.g. limit switches
    • 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
    • F15B15/2861—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT using magnetic means

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Actuator (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
ZA826989A 1981-09-24 1982-09-23 Hydraulic ram ZA826989B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3137951A DE3137951C2 (en) 1981-09-24 1981-09-24 Hydraulic push-piston gear, in particular for use as a back and forth cylinder in underground mining operations, with permanent magnets arranged on the piston rod

Publications (1)

Publication Number Publication Date
ZA826989B true ZA826989B (en) 1983-07-27

Family

ID=6142459

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA826989A ZA826989B (en) 1981-09-24 1982-09-23 Hydraulic ram

Country Status (9)

Country Link
JP (1) JPS5869997A (en)
AU (1) AU8856582A (en)
BE (1) BE894469A (en)
DE (1) DE3137951C2 (en)
ES (1) ES8306520A1 (en)
FR (1) FR2513370A1 (en)
GB (1) GB2106984B (en)
PL (1) PL135861B1 (en)
ZA (1) ZA826989B (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3241237C2 (en) * 1982-11-09 1985-10-24 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Thrust piston gear, in particular for use as a return cylinder in mining operations, with a permanent magnet system arranged on the piston rod
DE3507937A1 (en) * 1985-03-06 1986-09-11 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal Device for direction-referred measurement and transmission of path lengths in the case of hydraulic walking supports
DE3508479A1 (en) * 1985-03-09 1986-09-11 Ruhrkohle Ag, 4300 Essen Device for displacement measurement, for example measuring of the return travel during mining operations in coal mining
DE3518162C1 (en) * 1985-05-21 1986-04-24 Bochumer Eisenhütte Heintzmann GmbH & Co KG, 4630 Bochum Device for monitoring the synchronism of a back cylinder and a cap sliding cylinder
DK195886A (en) * 1986-04-29 1987-10-30 Niels Hvilsted WORKING CYLINDER WITH STAMP AND WITH A MAGNETIC DEVICE FOR DETERMINING A STAMP POSITION
CH674058A5 (en) * 1986-10-22 1990-04-30 Festo Kg
JPH02186102A (en) * 1989-01-10 1990-07-20 Nakamura Koki Kk Piston position detecting device for piston type accumulator
DE9412435U1 (en) * 1994-08-02 1994-09-29 Festo Kg Working cylinder
DE19724388A1 (en) * 1997-06-10 1998-12-17 Bosch Gmbh Robert Displacement sensor
DE10219950C1 (en) * 2002-05-03 2003-10-30 Hilti Ag Pneumatic hammer mechanism with magnetic field sensitive sensor
EP2009404A3 (en) 2007-06-29 2014-12-24 Melexis Technologies NV Magnetic structure for detecting a relative motion between the magnetic structure and a magnetic field sensor
US8857530B2 (en) 2011-03-07 2014-10-14 Cnh Industrial Canada, Ltd. Automatic depth control system for an agricultural implement
WO2018064671A1 (en) 2016-09-30 2018-04-05 Milwaukee Electric Tool Corporation Power tool
DE102018002053A1 (en) * 2018-03-14 2019-09-19 Festo Ag & Co. Kg Piston for a drive device, drive device and method for producing a piston

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2917609C2 (en) * 1979-05-02 1985-12-19 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Device for controlling the pre-pledging caps of a walking support depending on the progress of the dismantling
DE2933557C2 (en) * 1979-08-18 1982-11-04 Robert Bosch Gmbh, 7000 Stuttgart Transmitter for non-contact distance or speed measurement
DE2945895C2 (en) * 1979-11-14 1986-06-05 Festo-Maschinenfabrik Gottlieb Stoll, 7300 Esslingen Magnetic position transmitter for hydraulic or pneumatic working cylinders

Also Published As

Publication number Publication date
ES515918A0 (en) 1983-06-01
JPS5869997A (en) 1983-04-26
GB2106984B (en) 1985-01-23
BE894469A (en) 1983-01-17
FR2513370A1 (en) 1983-03-25
DE3137951C2 (en) 1985-10-17
GB2106984A (en) 1983-04-20
DE3137951A1 (en) 1983-04-07
PL135861B1 (en) 1985-12-31
PL238318A1 (en) 1983-05-23
ES8306520A1 (en) 1983-06-01
AU8856582A (en) 1983-03-31

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