EP0114639A3 - Control for a hydraulic prop of advancing mine roof supports - Google Patents

Control for a hydraulic prop of advancing mine roof supports Download PDF

Info

Publication number
EP0114639A3
EP0114639A3 EP84100425A EP84100425A EP0114639A3 EP 0114639 A3 EP0114639 A3 EP 0114639A3 EP 84100425 A EP84100425 A EP 84100425A EP 84100425 A EP84100425 A EP 84100425A EP 0114639 A3 EP0114639 A3 EP 0114639A3
Authority
EP
European Patent Office
Prior art keywords
stamp
line
control
pressure
mine roof
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Withdrawn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
EP84100425A
Other languages
German (de)
French (fr)
Other versions
EP0114639A2 (en
Inventor
Karl Krieger
Jochem Hartleb
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 EP0114639A2 publication Critical patent/EP0114639A2/en
Publication of EP0114639A3 publication Critical patent/EP0114639A3/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Withdrawn legal-status Critical Current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)
  • Press Drives And Press Lines (AREA)
  • Safety Valves (AREA)
  • Actuator (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

Die Steuerung des Stempels (1) erfolgt mit einem Nachsetzgerät (10), das im Nebenschluß zu den Setz- und Raubventilen (4, 8) in die zum Druckraum (2) des Stempels (1) führende Nachsetzleitung (11) eingeschaltet ist. Der Nachsetzvorgang wird durch die Betätigung eines Schalt­ stößels (14) am Nachsetzgerät (10) ausgelöst, der ein 3/2-Wegeventil (13) mit der Hochdruckleitung P verbindet. Die einströmende Druckflüssigkeit beaufschlagt den Schalt­ kolben (16) von einem weiteren 3/2-Wegeventil (15), das Druckflüssigkeit zum Druckraum (2) des Stempels (1) und auf einen Schaltkolben (17) leitet. Dieser wirkt auf einen Riegel (18), der gegen die Kraft einer Sperrfeder (20) in eine Ausnehmung (19) des Schaltstößels (14) einrastet, wenn der Druck in der Nachsetzleitung (11) einen vorgegebenen Mindestsetzdruck übersteigt. Der Riegel (18) wird aus der Einraststellung durch Beaufschlagung eines Schaltkolbens (23) mit dem Raubventil (8) herausgenommen. The stamp (1) is controlled with a Follow-up device (10) which shunts the setting and Robber valves (4, 8) into the pressure chamber (2) of the stamp (1) leading follow-up line (11) is switched on. The Repositioning is done by pressing a switch plunger (14) on the repeater (10) triggered the one 3/2-way valve (13) connects to the high pressure line P. The inflowing hydraulic fluid acts on the switch piston (16) from another 3/2-way valve (15), the Hydraulic fluid to the pressure chamber (2) of the stamp (1) and on conducts a switching piston (17). This acts on a bolt (18) against the force of a locking spring (20) in a Recess (19) of the switching plunger (14) engages when the Pressure in the replenishment line (11) a predetermined Minimum set pressure exceeds. The bolt (18) is from the Locking position by acting on a switching piston (23) with the pirate valve (8).

EP84100425A 1983-01-20 1984-01-17 Control for a hydraulic prop of advancing mine roof supports Withdrawn EP0114639A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833301674 DE3301674C1 (en) 1983-01-20 1983-01-20 Control system for hydraulic stamps on walking frames
DE3301674 1983-01-20

Publications (2)

Publication Number Publication Date
EP0114639A2 EP0114639A2 (en) 1984-08-01
EP0114639A3 true EP0114639A3 (en) 1986-12-03

Family

ID=6188659

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84100425A Withdrawn EP0114639A3 (en) 1983-01-20 1984-01-17 Control for a hydraulic prop of advancing mine roof supports

Country Status (2)

Country Link
EP (1) EP0114639A3 (en)
DE (1) DE3301674C1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3506185A1 (en) * 1985-02-22 1986-08-28 Thyssen Industrie AG Schmiedetechnik/Bergbautechnik, 4100 Duisburg Control valve for a self-advancing support system
DE3816433C1 (en) * 1988-05-13 1989-06-01 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal, De Resetting control for hydraulic self-advancing support

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2408031A1 (en) * 1977-11-04 1979-06-01 Gewerk Eisenhuette Westfalia CONTROL DEVICE FOR HYDRAULIC SUPPORT IN THE FORM OF STREAKS OR SIMILAR ASSEMBLY
GB2047316A (en) * 1979-04-12 1980-11-26 Gewerk Eisenhuette Westfalia Improvements in hydraulic control apparatus for controlling the operation of mine roof support props
DE2942463A1 (en) * 1979-10-20 1981-04-30 Klöckner-Werke AG, 4100 Duisburg Hydraulic walking mine support frame setting mechanism - has manometer connecting following setting lead between prop and pressure load
DE3012299A1 (en) * 1980-03-29 1981-10-08 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal Hydraulic pit prop regulating system - has after-setting unit ahead of relief valve activating operating piston
DE3015411A1 (en) * 1980-04-22 1981-11-05 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal Hydraulic mine striding support prop. regulation - has fluid flowing to return valve controlling supply to pressure chamber
DE3123278C1 (en) * 1981-06-12 1982-12-16 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal Control for a hydraulic prop of a self-advancing support assembly

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3128279A1 (en) * 1981-07-17 1983-02-03 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen ADJUSTMENT CONTROL FOR A HYDRAULIC STAMP EXTENSION AND HYDRAULICALLY CONTROLLED CHECK VALVE

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2408031A1 (en) * 1977-11-04 1979-06-01 Gewerk Eisenhuette Westfalia CONTROL DEVICE FOR HYDRAULIC SUPPORT IN THE FORM OF STREAKS OR SIMILAR ASSEMBLY
GB2047316A (en) * 1979-04-12 1980-11-26 Gewerk Eisenhuette Westfalia Improvements in hydraulic control apparatus for controlling the operation of mine roof support props
DE2942463A1 (en) * 1979-10-20 1981-04-30 Klöckner-Werke AG, 4100 Duisburg Hydraulic walking mine support frame setting mechanism - has manometer connecting following setting lead between prop and pressure load
DE3012299A1 (en) * 1980-03-29 1981-10-08 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal Hydraulic pit prop regulating system - has after-setting unit ahead of relief valve activating operating piston
DE3015411A1 (en) * 1980-04-22 1981-11-05 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal Hydraulic mine striding support prop. regulation - has fluid flowing to return valve controlling supply to pressure chamber
DE3123278C1 (en) * 1981-06-12 1982-12-16 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal Control for a hydraulic prop of a self-advancing support assembly

Also Published As

Publication number Publication date
DE3301674C1 (en) 1984-01-05
EP0114639A2 (en) 1984-08-01

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Effective date: 19870203

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Inventor name: KRIEGER, KARL

Inventor name: HARTLEB, JOCHEM