GB1167614A - Method and Control System for Adjusting a Pit Prop Axis - Google Patents

Method and Control System for Adjusting a Pit Prop Axis

Info

Publication number
GB1167614A
GB1167614A GB668167A GB668167A GB1167614A GB 1167614 A GB1167614 A GB 1167614A GB 668167 A GB668167 A GB 668167A GB 668167 A GB668167 A GB 668167A GB 1167614 A GB1167614 A GB 1167614A
Authority
GB
United Kingdom
Prior art keywords
prop
ram
valve
port
angular position
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
GB668167A
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.)
Bergwerksverband GmbH
Original Assignee
Bergwerksverband GmbH
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 DEB85838A external-priority patent/DE1257720B/en
Priority claimed from DEB86704A external-priority patent/DE1260414B/en
Application filed by Bergwerksverband GmbH filed Critical Bergwerksverband GmbH
Publication of GB1167614A publication Critical patent/GB1167614A/en
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
    • E21D23/0069—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 without essential advancing shifting devices
    • 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
    • Y10T137/0753—Control by change of position or inertia of system
    • Y10T137/0923—By pendulum or swinging member
    • Y10T137/0947—With servo connection to valve

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)
  • Earth Drilling (AREA)
  • Servomotors (AREA)

Abstract

1,167,614. Advancing mine roof support control circuits. BERGWERKSVERBAND G.m.b.H. 13 Feb., 1967 [17. Feb., 1966: 16 April, 1966], No. 6681/67. Heading E1 P [Also in Division G3] A pit prop is provided with a control system operable to adjust the angular position thereof in relation to the vertical, the system comprising means for sensing the inclination of the prop from a predetermined angular setting in relation to the vertical to provide signals to control means for causing operation of at least one ram for adjusting the angular position. The angular position of the prop may be adjusted in a single plane by a single ram or in two perpendicular planes by two separately controlled rams. The ram or rams may act at the top or bottom of the prop. As shown, the sensing means is in the form of a pendulum 136, Fig. 3 (not shown) controlling the opening and closing of two valve ports 134, 135, but in alternative embodiments the sensing means is in the form of electrical contacts which co-operate with the prop itself or a pendulum thereon to provide the control signals. Assuming the port 134 is closed by the pendulum 136 due to an undesirable tilting of the prop, compressed air from a line 130 enters the other port 135 by way of a reducing valve 131 and a branch conduit 102. Air entering the port 135 flows to a line 105 and causes opening of a diaphragm operated valve 106 which thus directs air from a line 130b to cause a valve 108 to open. The opening of the valve 108 supplies hydraulic fluid through lines 150, 153 to the chamber 107b of a ram 121 and causes the piston rod 123 thereof to move the prop to its correct angular position. Hydraulic fluid in the other ram chamber 107a flows to a reservair 151 through a second valve 108. Tilting of the prop in the opposite direction opens port 134 to effect reverse operation of the ram.
GB668167A 1966-02-17 1967-02-13 Method and Control System for Adjusting a Pit Prop Axis Expired GB1167614A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEB85838A DE1257720B (en) 1966-02-17 1966-02-17 Control for a moving extension frame
DEB86704A DE1260414B (en) 1966-04-16 1966-04-16 Control for a moving extension frame

Publications (1)

Publication Number Publication Date
GB1167614A true GB1167614A (en) 1969-10-15

Family

ID=25967800

Family Applications (1)

Application Number Title Priority Date Filing Date
GB668167A Expired GB1167614A (en) 1966-02-17 1967-02-13 Method and Control System for Adjusting a Pit Prop Axis

Country Status (2)

Country Link
US (1) US3437010A (en)
GB (1) GB1167614A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2493914A1 (en) * 1980-11-13 1982-05-14 Bergwerksverband Gmbh METHOD AND DEVICE FOR CONTROLLING A SHIELD SUPPORT FOR UNDERGROUND EXPLOITATION

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU56825A1 (en) * 1968-09-05 1970-03-05
DE1800562A1 (en) * 1968-10-02 1970-07-09 Becorit Grubenausbau Gmbh Spring-loaded punch supports for a pit support element
DE1810869A1 (en) * 1968-11-26 1970-06-04 Bergwerksverband Gmbh Control for units of the wandering longwall mining
FR2056580A6 (en) * 1969-08-06 1971-05-14 Bergwerksverband Gmbh
US3712108A (en) * 1970-02-25 1973-01-23 Applied Power Ind Inc Freely positionable force distributing device
GB1388938A (en) * 1972-09-28 1975-03-26 Victor Products Ltd Control valves
US3853075A (en) * 1973-08-08 1974-12-10 Nasa Automatically operable self-leveling load table
US3964504A (en) * 1974-05-07 1976-06-22 Integrated Power, Incorporated Leveling valve
US4250360A (en) * 1978-01-05 1981-02-10 Svensson Gustav E Device to automatically activate or deactivate control means
US5538364A (en) * 1995-02-14 1996-07-23 Huntsman; Steven D. Yieldable mine post having a double ball and socket configuration
DE102007035848C5 (en) * 2007-07-31 2018-11-15 Marco Systemanalyse Und Entwicklung Gmbh Removal screen and method for controlling or determining the position of a removal screen
DE102009034216B4 (en) * 2009-07-22 2017-01-05 Marco Systemanalyse Und Entwicklung Gmbh Method for monitoring a cylinder and control for carrying out the method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1962924A (en) * 1930-10-29 1934-06-12 Globe Machinery & Supply Compa Lift for automobiles
US2565639A (en) * 1945-01-22 1951-08-28 Hpm Dev Corp Platen leveling multiple ram press
FR1096561A (en) * 1953-12-21 1955-06-22 Citroen Sa Andre Anti-roll device for vehicles
US3028175A (en) * 1959-06-15 1962-04-03 Thompson Ramo Wooldridge Inc Automatically leveling vehicle suspension system
US3355993A (en) * 1965-11-17 1967-12-05 Soule Steel Company Drive balancing apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2493914A1 (en) * 1980-11-13 1982-05-14 Bergwerksverband Gmbh METHOD AND DEVICE FOR CONTROLLING A SHIELD SUPPORT FOR UNDERGROUND EXPLOITATION

Also Published As

Publication number Publication date
US3437010A (en) 1969-04-08

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Legal Events

Date Code Title Description
414F Notice of opposition given (sect. 14/1949)
414A Case decided by the comptroller ** specification amended (sect. 14/1949)
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees