GB2106984B - Hydraulic ram with stroke indication - Google Patents

Hydraulic ram with stroke indication

Info

Publication number
GB2106984B
GB2106984B GB08226870A GB8226870A GB2106984B GB 2106984 B GB2106984 B GB 2106984B GB 08226870 A GB08226870 A GB 08226870A GB 8226870 A GB8226870 A GB 8226870A GB 2106984 B GB2106984 B GB 2106984B
Authority
GB
United Kingdom
Prior art keywords
hydraulic ram
stroke indication
stroke
indication
ram
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.)
Expired
Application number
GB08226870A
Other versions
GB2106984A (en
Inventor
Harry Rosenberg
Karl-Heinz Plester
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.)
Gewerkschaft Eisenhutte Westfalia GmbH
Original Assignee
Gewerkschaft Eisenhutte Westfalia GmbH
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 Gewerkschaft Eisenhutte Westfalia GmbH filed Critical Gewerkschaft Eisenhutte Westfalia GmbH
Publication of GB2106984A publication Critical patent/GB2106984A/en
Application granted granted Critical
Publication of GB2106984B publication Critical patent/GB2106984B/en
Expired 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
    • 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
GB08226870A 1981-09-24 1982-09-21 Hydraulic ram with stroke indication Expired GB2106984B (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 (2)

Publication Number Publication Date
GB2106984A GB2106984A (en) 1983-04-20
GB2106984B true GB2106984B (en) 1985-01-23

Family

ID=6142459

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08226870A Expired GB2106984B (en) 1981-09-24 1982-09-21 Hydraulic ram with stroke indication

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
JP5116576B2 (en) 2007-06-29 2013-01-09 メレクシス テッセンデルロ エヌヴィ Magnetic structure for detecting relative motion between a 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
CN114211453A (en) 2016-09-30 2022-03-22 米沃奇电动工具公司 Method of operating a hydraulic crimping tool to crimp a connector
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
DE3137951C2 (en) 1985-10-17
AU8856582A (en) 1983-03-31
ES515918A0 (en) 1983-06-01
DE3137951A1 (en) 1983-04-07
GB2106984A (en) 1983-04-20
PL238318A1 (en) 1983-05-23
BE894469A (en) 1983-01-17
ZA826989B (en) 1983-07-27
FR2513370A1 (en) 1983-03-25
PL135861B1 (en) 1985-12-31
ES8306520A1 (en) 1983-06-01
JPS5869997A (en) 1983-04-26

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee