FR2398879A1 - Appareil de commande pour soutenement marchant hydraulique - Google Patents

Appareil de commande pour soutenement marchant hydraulique

Info

Publication number
FR2398879A1
FR2398879A1 FR7734078A FR7734078A FR2398879A1 FR 2398879 A1 FR2398879 A1 FR 2398879A1 FR 7734078 A FR7734078 A FR 7734078A FR 7734078 A FR7734078 A FR 7734078A FR 2398879 A1 FR2398879 A1 FR 2398879A1
Authority
FR
France
Prior art keywords
walking support
hydraulic walking
control unit
piston
hydraulic
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Withdrawn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
FR7734078A
Other languages
English (en)
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
Priority claimed from DE19762651913 external-priority patent/DE2651913C2/de
Priority claimed from DE19772701668 external-priority patent/DE2701668C2/de
Priority claimed from DE19772710649 external-priority patent/DE2710649C2/de
Application filed by Hemscheidt Hermann Maschinenfabrik GmbH and Co filed Critical Hemscheidt Hermann Maschinenfabrik GmbH and Co
Publication of FR2398879A1 publication Critical patent/FR2398879A1/fr
Withdrawn legal-status Critical Current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
    • E21D23/26—Hydraulic or pneumatic control
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/4238—With cleaner, lubrication added to fluid or liquid sealing at valve interface
    • Y10T137/4245—Cleaning or steam sterilizing
    • Y10T137/4273—Mechanical cleaning
    • Y10T137/4336—Cleaning member reciprocates in passage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8158—With indicator, register, recorder, alarm or inspection means
    • Y10T137/8326—Fluid pressure responsive indicator, recorder or alarm
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87169—Supply and exhaust
    • Y10T137/87193—Pilot-actuated

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)
  • Check Valves (AREA)
  • Transplanting Machines (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

L'invention concerne un appareil de commande pour soutènement marchant hydraulique. Dans l'appareil de l'invention, on prévoit deux soupapes distributrices A, B dont une seule B comporte un étranglement 7 disposé dans un piston différentiel 13 et reliant une conduite d'alimentation de pression 3 à une chambre à pression 14, ces deux soupapes distributrices A, B formant une interconnexion influençant mutuellement les deux côtés du piston d'un groupe cylindre/piston. L'invention est utilisée afin de pouvoir, en cas de nécessité, interrompre immédiatement toute phase de travail dans un soutènement marchant hydraulique.
FR7734078A 1976-11-13 1977-11-14 Appareil de commande pour soutenement marchant hydraulique Withdrawn FR2398879A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19762651913 DE2651913C2 (de) 1976-11-13 1976-11-13 Gerät zur Steuerung eines hydraulischen Schreitausbaus
DE19772701668 DE2701668C2 (de) 1977-01-17 1977-01-17 Steuergerät für einen hydraulisch schreitenden Strebausbau
DE19772710649 DE2710649C2 (de) 1977-03-11 1977-03-11 Steuergerät für hydraulischen Schreitausbau

Publications (1)

Publication Number Publication Date
FR2398879A1 true FR2398879A1 (fr) 1979-02-23

Family

ID=27187034

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7734078A Withdrawn FR2398879A1 (fr) 1976-11-13 1977-11-14 Appareil de commande pour soutenement marchant hydraulique

Country Status (5)

Country Link
US (1) US4161136A (fr)
JP (1) JPS5362078A (fr)
FR (1) FR2398879A1 (fr)
GB (1) GB1550565A (fr)
PL (1) PL202089A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4640309A (en) * 1983-06-29 1987-02-03 Parker Hannifin Corporation Pilot operated poppet valve with speed control
FR2557218B1 (fr) * 1983-12-21 1988-01-15 Bennes Marrel Emetteur hydraulique de commande a distance avec amplificateurs de debit
US5103866A (en) * 1991-02-22 1992-04-14 Foster Raymond K Poppet valve and valve assemblies utilizing same
WO1994010457A1 (fr) * 1992-10-30 1994-05-11 Bw/Ip International, Inc. Vanne de regulation de pression destinee a un actuateur hydraulique
JP3778634B2 (ja) * 1996-11-22 2006-05-24 Ｓｍｃ株式会社 パイロットチェック弁付スピードコントローラ
US6755473B2 (en) * 2000-11-22 2004-06-29 Herman Miller, Inc. Fluid control system for an office furniture device
US7625190B2 (en) * 2004-04-14 2009-12-01 K.R. Anderson, Inc. Crossover switching valve
US8220485B2 (en) * 2005-05-31 2012-07-17 Fisher Controls International Llc Pneumatic pilot valve
CN103410548B (zh) * 2013-05-22 2016-05-25 三一重型装备有限公司 液压支架及其喷水阀

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3598148A (en) * 1969-08-14 1971-08-10 Airmatic Valve Inc Momentary contact poppet valve
US3989066A (en) * 1971-12-30 1976-11-02 Clifton J. Burwell by said Oded E. Sturman and said Benjamin Grill Fluid control system

Also Published As

Publication number Publication date
US4161136A (en) 1979-07-17
JPS5362078A (en) 1978-06-03
GB1550565A (en) 1979-08-15
PL202089A1 (pl) 1978-06-19

Similar Documents

Publication Publication Date Title
FR2398879A1 (fr) Appareil de commande pour soutenement marchant hydraulique
FR2366930A1 (fr) Presse a commande hydraulique
FR2412715A1 (fr) Injecteur a double aiguille
FR2454035B1 (fr) Soupape de limitation de pression pour etancons hydrauliques
FR2363016A1 (fr) Installation de commande hydraulique a deux pompes, notamment, pour engins de travaux publics
PL212963A1 (pl) Zawor nadcisnieniowy do hydraulicznego stojaka
FR2447503A1 (fr) Soupape de distribution pour circuits hydrauliques
FR2371724A1 (fr) Systeme perfectionne de regulation en surpilotage
FR2366473A1 (fr) Systeme hydraulique pour milieux extremement froids
NO155211C (no) Ventilanlegg til regulering av funksjonen hos en hydraulisk motor, saerlig en hydraulisk sylinder.
FR2363693A1 (fr) Appareil a commande multiple pour soutenement marchant hydraulique
ATE12971T1 (de) Pressluftmotor.
SE8005464L (sv) Sett och anordning for hydraulisk forsterkning av styrrorelsen hos en ratt
FR2323093A1 (fr) Alimentation en huile lubrifiante pour une machine
FR2438295A1 (fr)
SE7403635L (fr)
OA01498A (fr) Limiteur de pression pour freins hydrauliques.
JPS5438473A (en) Hydraulic braking pressure control system
GB1016400A (en) Hydraulic circuit with lockout valve in common return line
SU600075A1 (ru) Гидросистема подъемно-транспортного оборудовани
SU681236A1 (ru) Вибратор
FR1536764A (fr) Soupape de distribution à pression d'huile
SU626781A1 (ru) Огнепреградитель дл газовых магистралей
SU376599A1 (ru) Гидропульсатор
SE8204687D0 (sv) Forfarande och hydraulkrets for fordelning av en av en pump alstrad vetskestrom pa ett flertal arbetsanordningar

Legal Events

Date Code Title Description
ST Notification of lapse