GB1068355A - Improvements in or relating to mine roof supports - Google Patents

Improvements in or relating to mine roof supports

Info

Publication number
GB1068355A
GB1068355A GB13172/65A GB1317265A GB1068355A GB 1068355 A GB1068355 A GB 1068355A GB 13172/65 A GB13172/65 A GB 13172/65A GB 1317265 A GB1317265 A GB 1317265A GB 1068355 A GB1068355 A GB 1068355A
Authority
GB
United Kingdom
Prior art keywords
cylinder
small
return valve
bore
mine roof
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
GB13172/65A
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.)
Gullick Ltd
Original Assignee
Gullick 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 Gullick Ltd filed Critical Gullick Ltd
Publication of GB1068355A publication Critical patent/GB1068355A/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
    • E21D15/58—Devices for setting props or chocks
    • E21D15/585—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—Cantilever extension or similar protecting devices
    • E21D17/0206—Hydraulically operated extension devices
    • 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
    • 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
    • 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
    • F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids

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)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

1,068,355. Hydraulic intensifiers. GULLICK Ltd. March 29, 1965 [April 16, 1964], No. 13172/65. Heading F1P. A hydraulic intensifier in the line to a ram (34) Fig. 4 (not shown), operating a pivoted extension (30) of a mine roof support comprises two coaxial cylinders of different bore containing pistons 16, 17 formed integral with one another and having an axial bore containing a non-return valve preventing flow from the small bore cylinder 19 to the large bore cylinder 18. Fluid is introduced into the cylinder 18 and flows through the non-return valve to the small bore cylinder 19 until the pressure differential is sufficiently small for the non-return valve to close. The fluid then acts on the large piston 16, moving it against a compression spring 20 to increase the pressure in the small cylinder.
GB13172/65A 1964-04-16 1965-03-29 Improvements in or relating to mine roof supports Expired GB1068355A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR971121A FR1400585A (en) 1964-04-16 1964-04-16 Pressure multiplier device and its applications

Publications (1)

Publication Number Publication Date
GB1068355A true GB1068355A (en) 1967-05-10

Family

ID=8827909

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13172/65A Expired GB1068355A (en) 1964-04-16 1965-03-29 Improvements in or relating to mine roof supports

Country Status (4)

Country Link
US (1) US3333425A (en)
DE (1) DE1982420U (en)
FR (1) FR1400585A (en)
GB (1) GB1068355A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2304357A (en) * 1995-08-14 1997-03-19 Baker Hughes Inc Pressure-boost device for downhole tools

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3656868A (en) * 1967-12-01 1972-04-18 Orpha B Brandon Method of pumping fluids with an energy wave generator
GB1234661A (en) * 1968-01-17 1971-06-09
US3582237A (en) * 1968-10-18 1971-06-01 Tecalemit Engineering Fluid displacement units
DE2027299A1 (en) * 1970-06-03 1971-12-09 Klöckner-Werke ,4100 Duisburg Cap pull for the support frame of the traveling longwall mining
US3797967A (en) * 1972-05-10 1974-03-19 D Howeth Hydraulic throttle actuator
US4343595A (en) * 1976-12-20 1982-08-10 Wells David L Hydraulic power booster apparatus
US4659292A (en) * 1976-12-20 1987-04-21 Dennis J. Lawman Hydraulic power booster apparatus
US4773795A (en) * 1986-08-08 1988-09-27 Klockner-Becorit Gmbh Roof cap assembly with supporting cylinders for roof support mechanism
DE4229595C1 (en) * 1992-09-04 1993-08-19 Bayerische Motoren Werke Ag, 8000 Muenchen, De
FR2830058A1 (en) * 2001-09-26 2003-03-28 Beringer Sa Pressure amplifier for motor vehicle clutch or brake hydraulic circuit has shouldered piston sliding in coaxial chambers to control fluid flow and pressure
WO2009024136A2 (en) * 2007-08-23 2009-02-26 Tiefenbach Control Systems Gmbh Stope supporting structure for face support in mines
RU2637162C1 (en) * 2016-11-16 2017-11-30 Общество с ограниченной ответственностью Финансово-промышленная компания "Космос-Нефть-Газ" Hydraulic multiplier
RU2643574C1 (en) * 2016-11-16 2018-02-02 Общество с ограниченной ответственностью Финансово-промышленная компания "Космос-Нефть-Газ" Hydraulic multiplier
US10954966B2 (en) * 2017-10-25 2021-03-23 Raytheon Company Bootstrap accumulator containing integrated bypass valve
CN112610543B (en) * 2020-12-18 2022-04-15 中国矿业大学 Vertical shaft construction stepping template system, hydraulic control system thereof and pipeline collecting or installing method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2067358A (en) * 1934-09-08 1937-01-12 Thornton William Kenneth Tire pump
US3097829A (en) * 1959-01-16 1963-07-16 Gullick Ltd Roof support in mines
US3086470A (en) * 1960-03-28 1963-04-23 Skipor System for increasing fluid pressure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2304357A (en) * 1995-08-14 1997-03-19 Baker Hughes Inc Pressure-boost device for downhole tools
US5791412A (en) * 1995-08-14 1998-08-11 Baker Hughes Incorporated Pressure-boost device for downhole tools
GB2304357B (en) * 1995-08-14 1999-03-24 Baker Hughes Inc Pressure-boost device for downhole tools
USRE38866E1 (en) * 1995-08-14 2005-11-08 Baker Hughes Incorporated Pressure-boost device for downhole tools

Also Published As

Publication number Publication date
FR1400585A (en) 1965-05-28
DE1982420U (en) 1968-04-04
US3333425A (en) 1967-08-01

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