GB798414A - Improvements in control mechanism for hydraulically operated equipment - Google Patents

Improvements in control mechanism for hydraulically operated equipment

Info

Publication number
GB798414A
GB798414A GB3110054A GB3110054A GB798414A GB 798414 A GB798414 A GB 798414A GB 3110054 A GB3110054 A GB 3110054A GB 3110054 A GB3110054 A GB 3110054A GB 798414 A GB798414 A GB 798414A
Authority
GB
United Kingdom
Prior art keywords
valve
conveyer belt
props
unit
move
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
GB3110054A
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.)
EDWARD GEORGE JAGER
Hunt & Mitton Ltd
Original Assignee
EDWARD GEORGE JAGER
Hunt & Mitton 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 EDWARD GEORGE JAGER, Hunt & Mitton Ltd filed Critical EDWARD GEORGE JAGER
Priority to GB3110054A priority Critical patent/GB798414A/en
Publication of GB798414A publication Critical patent/GB798414A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/43—Programme-control systems fluidic
    • G05B19/46—Programme-control systems fluidic hydraulic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/26—Programme control arrangements
    • 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

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)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

798,414. Hydraulic pit props. HUNT & MITTON, Ltd., and JAGER, E. G. Oct. 21, 1955 [Oct. 28, 1954], No. 31100/54. Class 20(2) [Also in Groups XXIX and XXX] A valve assembly for controlling the operation in sequence of a plurality of hydraulic pit props 11 for supporting a coal-mine roof adjacent to a coal-cutting machine and moving a conveyer belt 12 and moving themselves, comprises a number of piston valves 30 operated by cams 40 on a. shaft 39, the heads of the valves being exposed to the pressure in the inlet manifold 18 to hold them against the cams. The valve units 15, 16 are connected to opposite sides of double-acting horizontal rams 50, 50a, Fig. 3 connected to the conveyer belt 12 and the unit 17 with the lower ends of single-acting pit-props 11. In operation, to move the equipment sideways, the shaft 39 is first rotated to a position to move the cam associated with the valve unit 17 so that this valve is urged upwardly by inlet pressure to connect the inlet manifold 18 to the lower ends of the pit props 11, which then move upwardly to support the roof. The shaft 39 is then rotated so that the valve unit 16 moves to supply pressure liquid to extend the rams 50, 50a to move the conveyer belt sideways. Then the shaft 39 is next rotated to a position in which the unit 17 connects the pit props 11 to exhaust, which then fall under gravity and finally to a position to .operate the valve unit 15 to retract the rams 50, 50a. Since the units on which the pit props 11 are mounted are lighter in weight than the conveyer belt and provided with suitable skids these units will on retraction of the rams 50, 50a move towards the conveyer belt. A non-return valve 53 may be fitted in the line between the unit 17 and the pit props 11 to prevent return flow in the event of excessive roof pressure. In these circumstances a spring- loaded, loose-ball valve 43 is fitted, the valve being unseated by means of a cam 44, roller 34a and a rod 57 to connect the pit props 11 to exhaust to enable them to be lowered.
GB3110054A 1954-10-28 1954-10-28 Improvements in control mechanism for hydraulically operated equipment Expired GB798414A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3110054A GB798414A (en) 1954-10-28 1954-10-28 Improvements in control mechanism for hydraulically operated equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3110054A GB798414A (en) 1954-10-28 1954-10-28 Improvements in control mechanism for hydraulically operated equipment

Publications (1)

Publication Number Publication Date
GB798414A true GB798414A (en) 1958-07-23

Family

ID=10317979

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3110054A Expired GB798414A (en) 1954-10-28 1954-10-28 Improvements in control mechanism for hydraulically operated equipment

Country Status (1)

Country Link
GB (1) GB798414A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1217907B (en) * 1958-12-20 1966-06-02 Bosch Gmbh Robert Use of a switching device with several fittings
DE1277787B (en) * 1967-03-30 1968-09-19 Bergwerksverband Gmbh Equipment for schedule control of hydraulic pit lining
DE1277786B (en) * 1958-09-18 1968-09-19 Bosch Gmbh Robert Control unit for hydraulic pit extensions
DE1289012B (en) * 1967-03-30 1969-02-13 Bergwerksverband Gmbh Equipment for schedule control of hydraulic pit lining
US4282902A (en) * 1979-05-04 1981-08-11 Becton Dickinson & Company Valve apparatus for simultaneous control of a plurality of fluid paths
GB2142074A (en) * 1983-06-21 1985-01-09 Dobson Park Ind Control of mine roof supports
CN103991815A (en) * 2014-05-30 2014-08-20 宁波天益齿轴齿轮有限公司 Lamplight jack

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1277786B (en) * 1958-09-18 1968-09-19 Bosch Gmbh Robert Control unit for hydraulic pit extensions
DE1217907B (en) * 1958-12-20 1966-06-02 Bosch Gmbh Robert Use of a switching device with several fittings
DE1277787B (en) * 1967-03-30 1968-09-19 Bergwerksverband Gmbh Equipment for schedule control of hydraulic pit lining
DE1289012B (en) * 1967-03-30 1969-02-13 Bergwerksverband Gmbh Equipment for schedule control of hydraulic pit lining
DE1289012C2 (en) * 1967-03-30 1973-04-05 Bergwerksverband Gmbh Equipment for the schedule control of hydraulic pit lining
US4282902A (en) * 1979-05-04 1981-08-11 Becton Dickinson & Company Valve apparatus for simultaneous control of a plurality of fluid paths
GB2142074A (en) * 1983-06-21 1985-01-09 Dobson Park Ind Control of mine roof supports
CN103991815A (en) * 2014-05-30 2014-08-20 宁波天益齿轴齿轮有限公司 Lamplight jack

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