FR2341037A1 - Powered mine supports control valve - has high pressure and return admission valves with piston operated by offset shaft cams - Google Patents

Powered mine supports control valve - has high pressure and return admission valves with piston operated by offset shaft cams

Info

Publication number
FR2341037A1
FR2341037A1 FR7703851A FR7703851A FR2341037A1 FR 2341037 A1 FR2341037 A1 FR 2341037A1 FR 7703851 A FR7703851 A FR 7703851A FR 7703851 A FR7703851 A FR 7703851A FR 2341037 A1 FR2341037 A1 FR 2341037A1
Authority
FR
France
Prior art keywords
high pressure
piston
valve
valves
control valve
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.)
Withdrawn
Application number
FR7703851A
Other languages
French (fr)
Inventor
Horst Schurmann
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.)
Hemscheidt Hermann Maschinenfabrik GmbH and Co
Original Assignee
Hemscheidt Hermann Maschinenfabrik GmbH and 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 Hemscheidt Hermann Maschinenfabrik GmbH and Co filed Critical Hemscheidt Hermann Maschinenfabrik GmbH and Co
Publication of FR2341037A1 publication Critical patent/FR2341037A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Multiple-Way Valves (AREA)

Abstract

The powered mine supports control and sequencing valve consists of multiway valves which connect piston sides alternately to high pressure feed or returns. Sprung valves are controlled by lever actuated cams on a switching shaft. Each piston side is coupled to a multiple valve admitting a high pressure feed and also to a valve which is connected by cross bore to shut off the return line. With the lever neutralised, all valves are closed by present pressure, with mutually offset cams on the shaft. They are used to alternately operate the high pressure valve on one side of the piston and the return valve on the far side of the piston.
FR7703851A 1976-02-13 1977-02-11 Powered mine supports control valve - has high pressure and return admission valves with piston operated by offset shaft cams Withdrawn FR2341037A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762605758 DE2605758B1 (en) 1976-02-13 1976-02-13 CONTROL VALVE FOR HYDRAULICALLY STEPPING STRUCTURE

Publications (1)

Publication Number Publication Date
FR2341037A1 true FR2341037A1 (en) 1977-09-09

Family

ID=5969808

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7703851A Withdrawn FR2341037A1 (en) 1976-02-13 1977-02-11 Powered mine supports control valve - has high pressure and return admission valves with piston operated by offset shaft cams

Country Status (4)

Country Link
JP (1) JPS52148835A (en)
DE (1) DE2605758B1 (en)
FR (1) FR2341037A1 (en)
ZA (1) ZA77558B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106838367A (en) * 2016-10-17 2017-06-13 东莞市倍益清环保科技有限公司 It is a kind of can 360 ° of rotations realize three kinds of faucet type water purifier devices of water outlet form

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2851937C2 (en) * 1978-12-01 1986-05-28 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Control valve, especially for hydraulic support in mining operations
JPS593070U (en) * 1982-06-29 1984-01-10 株式会社藤井合金製作所 Dual channel simultaneous opening/closing device
DE3315313A1 (en) * 1983-04-27 1984-10-31 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen CONTROL VALVE WITH DEAD MAN CONTROL
DE3428652A1 (en) * 1984-08-03 1986-02-13 FAG Kugelfischer Georg Schäfer KGaA, 8720 Schweinfurt Mechanically operable, hydraulic directional-control-valve combination
CN107489789A (en) * 2017-09-25 2017-12-19 鸿大智能机械有限公司 Hard sealing low discharge reversal valve

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1400568A1 (en) * 1960-03-24 1969-02-06 Aurora Corp Valve device
FR2043221A5 (en) * 1969-04-24 1971-02-12 Gewerk Eisenhuette Westfalia

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1400568A1 (en) * 1960-03-24 1969-02-06 Aurora Corp Valve device
FR2043221A5 (en) * 1969-04-24 1971-02-12 Gewerk Eisenhuette Westfalia

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106838367A (en) * 2016-10-17 2017-06-13 东莞市倍益清环保科技有限公司 It is a kind of can 360 ° of rotations realize three kinds of faucet type water purifier devices of water outlet form
CN106838367B (en) * 2016-10-17 2018-05-08 东莞市倍益清环保科技有限公司 It is a kind of can 360 ° rotate and realize the faucet type water purifier devices of three kinds of water outlet forms

Also Published As

Publication number Publication date
DE2605758B1 (en) 1977-07-21
JPS52148835A (en) 1977-12-10
ZA77558B (en) 1977-12-28

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Legal Events

Date Code Title Description
ST Notification of lapse