PL125322B1 - Apparatus for seating hydraulic mine props with a strong and uniform force - Google Patents

Apparatus for seating hydraulic mine props with a strong and uniform force Download PDF

Info

Publication number
PL125322B1
PL125322B1 PL1980223346A PL22334680A PL125322B1 PL 125322 B1 PL125322 B1 PL 125322B1 PL 1980223346 A PL1980223346 A PL 1980223346A PL 22334680 A PL22334680 A PL 22334680A PL 125322 B1 PL125322 B1 PL 125322B1
Authority
PL
Poland
Prior art keywords
pressure
valve
rack
pressure limiting
space
Prior art date
Application number
PL1980223346A
Other languages
English (en)
Polish (pl)
Other versions
PL223346A1 (xx
Inventor
Klaus Beckmann
Jans T Grisebach
Walter Weirich
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 PL223346A1 publication Critical patent/PL223346A1/xx
Publication of PL125322B1 publication Critical patent/PL125322B1/pl

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
    • E21D23/26—Hydraulic or pneumatic control
    • 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)
  • Safety Valves (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Presses (AREA)
PL1980223346A 1979-04-12 1980-04-09 Apparatus for seating hydraulic mine props with a strong and uniform force PL125322B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792914884 DE2914884A1 (de) 1979-04-12 1979-04-12 Einrichtung zum setzen hydraulischer grubenstempel mit hoher und gleichmaessiger setzkraft

Publications (2)

Publication Number Publication Date
PL223346A1 PL223346A1 (xx) 1981-01-30
PL125322B1 true PL125322B1 (en) 1983-04-30

Family

ID=6068183

Family Applications (1)

Application Number Title Priority Date Filing Date
PL1980223346A PL125322B1 (en) 1979-04-12 1980-04-09 Apparatus for seating hydraulic mine props with a strong and uniform force

Country Status (8)

Country Link
AU (1) AU533562B2 (xx)
BE (1) BE882725A (xx)
CA (1) CA1138303A (xx)
DE (1) DE2914884A1 (xx)
FR (1) FR2455673B2 (xx)
GB (2) GB2047316B (xx)
PL (1) PL125322B1 (xx)
ZA (1) ZA802130B (xx)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3128279A1 (de) * 1981-07-17 1983-02-03 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Nachsetzsteuerung fuer einen hydraulischen stempelausbau sowie hydraulisch ansteuerbares rueckschlagventil
DE3212747A1 (de) * 1982-04-06 1983-10-06 Gewerk Eisenhuette Westfalia Einrichtung zur hubsteuerung einer zylinddergruppe eines hydraulischen ausbausystems, insbesondere zum setzen der stempel einer schreitausbaueinheit
DE3301674C1 (de) * 1983-01-20 1984-01-05 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal Steuerung fuer hydraulische Stempel von Schreitausbaugestellen
GB2137314B (en) * 1983-03-26 1986-07-23 Dobson Park Ind Valve for mine support
PL146170B1 (en) * 1984-12-10 1989-01-31 Ct Kt Maszyn Gorniczych Komag Apparatus for changing curability and mineablity of a mineral deposit
DE3546278C1 (de) * 1985-12-28 1987-07-02 Bergwerksverband Gmbh Nachsetzsteuerung fuer den Strebausbau
DE3931625C1 (en) * 1989-09-22 1990-08-09 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal, De Underground mine roof support - maintains constant residual pressure during advance
GB9009859D0 (en) * 1990-05-02 1990-06-27 Meco Mining Equip A mine roof support
GB2274325B (en) * 1993-01-13 1996-04-03 Meco Mining Equip A yield valve
CN103775115A (zh) * 2014-01-21 2014-05-07 焦作欣扬程煤矿设备有限公司 侧摆移位立式压缸机

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1024167A (en) * 1964-02-14 1966-03-30 Dowty Mining Equipment Ltd Roof support assembly suitable for use in mines
GB1135942A (en) * 1964-12-07 1968-12-11 Groetschel Karl Maria Improvements relating to roof supports for mine workings
GB1180578A (en) * 1967-03-06 1970-02-04 Podmoskovny G Pk I Exi Gornogo Advancing Mine Roof Supports
DE1290109B (de) * 1967-10-21 1969-03-06 Gewerk Eisenhuette Westfalia Stempel fuer den Ausbau bzw. zur Abspannung im Streb/Streckenuebergang
DE1750834A1 (de) * 1968-06-10 1971-04-29 Gewerk Eisenhuette Westfalia UEberdruckventilpatrone mit Kolben-O-Ring-Dichtung
DE2146502C3 (de) * 1971-09-17 1982-04-29 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Ventilanordnung zum Setzen hydraulischer Grubenstempel mit hoher Setzkraft
DE2749312C2 (de) * 1977-11-04 1984-12-20 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Steuereinrichtung mit Nachsetzautomatik für einen hydraulischen Stempelausbau
DE2803283C2 (de) * 1978-01-26 1992-12-10 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Überdruckventil für hydraulische Grubenstempel

Also Published As

Publication number Publication date
GB2047316A (en) 1980-11-26
BE882725A (fr) 1980-07-31
AU5710080A (en) 1980-10-16
ZA802130B (en) 1981-05-27
CA1138303A (en) 1982-12-28
GB2096223A (en) 1982-10-13
FR2455673A2 (fr) 1980-11-28
PL223346A1 (xx) 1981-01-30
DE2914884C2 (xx) 1987-05-14
AU533562B2 (en) 1983-12-01
GB2047316B (en) 1983-04-20
DE2914884A1 (de) 1980-10-30
GB2096223B (en) 1983-05-11
FR2455673B2 (fr) 1987-05-07

Similar Documents

Publication Publication Date Title
PL125322B1 (en) Apparatus for seating hydraulic mine props with a strong and uniform force
KR930005274B1 (ko) 실린더용 유압회로
US4727792A (en) Hydraulic holding valve
US4485724A (en) Hydraulic control apparatus
US3906840A (en) Hydraulic control system for load supporting hydraulic motors
US5261232A (en) Valve system for supplying fluid from a pair of fluid pressure sources to a load
US4006667A (en) Hydraulic control system for load supporting hydraulic motors
CZ278203B6 (en) Pilot valve of a mechanical support hydraulic prop
US6256987B1 (en) Hydraulic operating apparatus
US4552488A (en) Mine roof support system
US4362089A (en) Valve system
US5235896A (en) Hydraulic cylinder/piston mechanism
US5638860A (en) Control valve for initial hydraulic surge pressure
US4286502A (en) Hydraulic load lifting system with automatic blocking valve
KR20030017324A (ko) 파일럿조작형 릴리프밸브 및 이를 사용한 유압장치
US4586424A (en) Hydraulic control arrangement
CA1331126C (en) Arrangement for operating hydraulic actuating means in a rock drilling boom and the like boom construction
EP0793023B1 (en) Hydraulic system
GB2212220A (en) Hydraulic control block
US5188015A (en) Automatically sequenced hydraulic cylinder mechanism
US3164171A (en) Directional control valve
EP0053608B1 (en) Valve system
USRE25415E (en) Hydraulic power unit and control system for tractors
EP1136702B1 (de) Druckwasserversorgung
SE440537B (sv) Hydraulkrets for en hydraulkran