FR1355414A - Dispositif de commande pour supports de toit de mine - Google Patents

Dispositif de commande pour supports de toit de mine

Info

Publication number
FR1355414A
FR1355414A FR934230A FR934230A FR1355414A FR 1355414 A FR1355414 A FR 1355414A FR 934230 A FR934230 A FR 934230A FR 934230 A FR934230 A FR 934230A FR 1355414 A FR1355414 A FR 1355414A
Authority
FR
France
Prior art keywords
control device
mine roof
roof supports
supports
mine
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
FR934230A
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.)
Dowty Mining Equipment Ltd
Original Assignee
Dowty Mining Equipment Ltd
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 Dowty Mining Equipment Ltd filed Critical Dowty Mining Equipment Ltd
Priority to FR934230A priority Critical patent/FR1355414A/fr
Application granted granted Critical
Publication of FR1355414A publication Critical patent/FR1355414A/fr
Expired 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
    • E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
    • E21D23/0073—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices with advancing shifting devices connected therewith
    • 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
    • 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08—Servomotor systems incorporating electrically operated control means

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)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
FR934230A 1963-05-09 1963-05-09 Dispositif de commande pour supports de toit de mine Expired FR1355414A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR934230A FR1355414A (fr) 1963-05-09 1963-05-09 Dispositif de commande pour supports de toit de mine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR934230A FR1355414A (fr) 1963-05-09 1963-05-09 Dispositif de commande pour supports de toit de mine

Publications (1)

Publication Number Publication Date
FR1355414A true FR1355414A (fr) 1964-03-13

Family

ID=8803442

Family Applications (1)

Application Number Title Priority Date Filing Date
FR934230A Expired FR1355414A (fr) 1963-05-09 1963-05-09 Dispositif de commande pour supports de toit de mine

Country Status (1)

Country Link
FR (1) FR1355414A (fr)

Similar Documents

Publication Publication Date Title
FR1371533A (fr) Dispositif de commande pour lasers
FR1395354A (fr) Dispositif de commande
FR1421076A (fr) Dispositif de commande pour support de toit de mine
FR1426031A (fr) Appareil de support de toit pour mines
FR1510885A (fr) Dispositif de commande hydraulique
FR1337380A (fr) Dispositif pour la dératisation
FR1356380A (fr) Dispositif de commande automatique de fréquence
FR1381162A (fr) Dispositif hydraulique de commande de direction
FR1355414A (fr) Dispositif de commande pour supports de toit de mine
FR1421042A (fr) Dispositif de commande pour support de soutènement de toit de mine
FR1394500A (fr) Dispositif de montage pour tableaux de commande
FR1448877A (fr) Dispositif de commande hydraulique asservie
FR1404693A (fr) Dispositif de commande de freins
FR1372007A (fr) Dispositif de commande perfectionné pour stores
FR1357050A (fr) Dispositif de commande irréversible
FR1473791A (fr) Dispositif de commande hydraulique
FR89683E (fr) Dispositif de commande de freins
FR1396711A (fr) Dispositif de commande hydraulique
FR1378929A (fr) Dispositif de commande pour cisailles hydrauliques
FR1309934A (fr) Dispositif de commande perfectionné pour store
FR1384952A (fr) Dispositif de commande
FR1399401A (fr) Dispositif de commande
FR1367366A (fr) Dispositif de commande des fusées
FR1362846A (fr) Support de toit pour mines
FR1534670A (fr) Dispositif de commande pour véhicule