GB1409751A - Control arrangements for use with a mine roof support pro/ - Google Patents

Control arrangements for use with a mine roof support pro/

Info

Publication number
GB1409751A
GB1409751A GB4284672A GB4284672A GB1409751A GB 1409751 A GB1409751 A GB 1409751A GB 4284672 A GB4284672 A GB 4284672A GB 4284672 A GB4284672 A GB 4284672A GB 1409751 A GB1409751 A GB 1409751A
Authority
GB
United Kingdom
Prior art keywords
pressure
bore
slide
spring
bores
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
GB4284672A
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.)
Gewerkschaft Eisenhutte Westfalia GmbH
Original Assignee
Gewerkschaft Eisenhutte Westfalia 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
Application filed by Gewerkschaft Eisenhutte Westfalia GmbH filed Critical Gewerkschaft Eisenhutte Westfalia GmbH
Publication of GB1409751A publication Critical patent/GB1409751A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/50—Component parts or details of props
    • E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
    • E21D15/512—Arrangement of valves

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Safety Valves (AREA)
  • Control Of Presses (AREA)

Abstract

1409751 Valves GEWERKSCHAFT EISENHUTTE WESTFALIA 15 Sept 1972 [17 Sept 1971] 42846/72 Heading F2V [Also in Division F1] A valve 30, 31 for controlling a low-pressure supply P1 and a high pressure supply P2 to a prop for positioning same against a mine roof and then subjecting same to setting pressure respectively incorporates slides 34, 48, spring- loaded members 37, 38, a non-return valve 46 and parts 41, 42, 47, 55, 56, 40 arranged as shown. The arrangement is such that when the pressure in the bore 43 reaches the pressure P1 the slide 34 is lifted against a spring 39 so that the bore 41 communicates therewith and when the pressure in the bores 43, 41, 47 reaches P2 then the slide 48 lifts against a spring 51 to establish communication between the bore 47 and the chamber 40 via bores 55, 56 whereupon fluid acts on the member 37 serving as a differential piston; slide 34 now closes communication between the bores 41, 43. Chamber 40 may incorporate a pressure relief valve.
GB4284672A 1971-09-17 1972-09-15 Control arrangements for use with a mine roof support pro/ Expired GB1409751A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2146502A DE2146502C3 (en) 1971-09-17 1971-09-17 Valve arrangement for setting hydraulic pit rams with high setting force

Publications (1)

Publication Number Publication Date
GB1409751A true GB1409751A (en) 1975-10-15

Family

ID=5819839

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4284672A Expired GB1409751A (en) 1971-09-17 1972-09-15 Control arrangements for use with a mine roof support pro/

Country Status (4)

Country Link
US (1) US3776098A (en)
DE (1) DE2146502C3 (en)
FR (1) FR2152589B1 (en)
GB (1) GB1409751A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2214988A (en) * 1988-02-13 1989-09-13 Gullick Dobson Ltd Control system for hydraulic mine roof support

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2537715C3 (en) * 1975-08-23 1980-11-06 Saarbergwerke Ag, 6600 Saarbruecken Pressure reducing valve arrangement and design for the connection of the two pressure chambers of a two-stage telescopic pit ram
US4007826A (en) * 1976-04-02 1977-02-15 Stephens-Adamson, Inc. Dual pressure take-up apparatus and system for dual belt conveyor-elevator
US4089171A (en) * 1976-05-24 1978-05-16 Webster Electric Company, Inc. Four position valve assembly
DE2724264C2 (en) * 1977-05-28 1985-12-19 Robert Bosch Gmbh, 7000 Stuttgart Follow-up adjustment device for a hydraulic machine
DE2749312C2 (en) * 1977-11-04 1984-12-20 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Control device with automatic repositioning for hydraulic ram removal
DE2830510C3 (en) * 1978-07-12 1981-07-23 Bergwerksverband Gmbh, 4300 Essen Method and valve arrangement for setting the stamps of a walking support
DE2914884A1 (en) * 1979-04-12 1980-10-30 Gewerk Eisenhuette Westfalia DEVICE FOR SETTING HYDRAULIC PIT STAMP WITH HIGH AND EVEN SETTING FORCE
DE3015411C2 (en) * 1980-04-22 1982-10-28 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal Stamp control
DE3123278C1 (en) * 1981-06-12 1982-12-16 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal Control for a hydraulic prop of a self-advancing support assembly
GB2137314B (en) * 1983-03-26 1986-07-23 Dobson Park Ind Valve for mine support
DE10328286B4 (en) * 2003-06-23 2015-05-13 Caterpillar Global Mining Europe Gmbh Hydraulic shield removal
CN110716591A (en) * 2019-11-20 2020-01-21 南理工泰兴智能制造研究院有限公司 Pressure regulating device of mine working environment and safety artificial intelligence simulation equipment

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1103036A (en) * 1912-06-07 1914-07-14 Bridgeport Brass Co Controlling mechanism for hydraulic presses and the like.
US1428998A (en) * 1921-04-25 1922-09-12 Buckeye Iron & Brass Works Valve for cake-forming presses
US1805367A (en) * 1929-04-18 1931-05-12 Ronald T King Automatically operated press
US2391930A (en) * 1942-12-01 1946-01-01 Albert R Stone Power transmission system
DE1135849B (en) * 1958-05-22 1962-09-06 Kronprinz Ag Process and filling device for setting and loading purely hydraulic pit punches

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2214988A (en) * 1988-02-13 1989-09-13 Gullick Dobson Ltd Control system for hydraulic mine roof support

Also Published As

Publication number Publication date
DE2146502C3 (en) 1982-04-29
DE2146502A1 (en) 1973-03-22
FR2152589A1 (en) 1973-04-27
DE2146502B2 (en) 1979-08-30
FR2152589B1 (en) 1974-08-19
US3776098A (en) 1973-12-04

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee