GB822161A - Improvements in or relating to hydraulic pit props and liquid supply systems therefor - Google Patents

Improvements in or relating to hydraulic pit props and liquid supply systems therefor

Info

Publication number
GB822161A
GB822161A GB1389256A GB1389256A GB822161A GB 822161 A GB822161 A GB 822161A GB 1389256 A GB1389256 A GB 1389256A GB 1389256 A GB1389256 A GB 1389256A GB 822161 A GB822161 A GB 822161A
Authority
GB
United Kingdom
Prior art keywords
prop
pressure
conduit
pump
inner member
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
GB1389256A
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.)
BOCHUMER GES fur GRUBENAUSBAU
Original Assignee
BOCHUMER GES fur GRUBENAUSBAU
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 BOCHUMER GES fur GRUBENAUSBAU filed Critical BOCHUMER GES fur GRUBENAUSBAU
Publication of GB822161A publication Critical patent/GB822161A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
    • H01L21/06—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising selenium or tellurium in uncombined form other than as impurities in semiconductor bodies of other materials
    • H01L21/10—Preliminary treatment of the selenium or tellurium, its application to the foundation plate, or the subsequent treatment of the combination
    • H01L21/101—Application of the selenium or tellurium to the foundation plate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B66F3/42—Constructional features with self-contained pumps, e.g. actuated by hand
    • 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
    • E21D15/005—Props; Chocks, e.g. made of flexible containers filled with backfilling material characterised by the material
    • 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
    • E21D15/14—Telescopic props
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
    • E21D15/45—Hydraulic, pneumatic, or hydraulic-pneumatic props having closed fluid system, e.g. with built-in pumps or accumulators
    • 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
    • E21D15/14—Telescopic props
    • E21D15/46—Telescopic props with load-measuring devices; with alarm devices
    • E21D15/465—Telescopic props with load-measuring devices; with alarm devices with essential hydraulic or pneumatic details
    • 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
    • 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
    • E21D15/586—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 the props being pre-loaded

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Safety Valves (AREA)
  • Reciprocating Pumps (AREA)
  • Ink Jet (AREA)
  • Press Drives And Press Lines (AREA)
  • Check Valves (AREA)

Abstract

822,161. Hydraulic pit props. BOCHUMER GESELLSCHAFT FUR GRUBENAUSBAU UND TECHNIK. May 4, 1956 [May 6, 1955], No. 13892/56. Class 20(2) An hydraulic pit prop 1, Fig. 1, is initially set by low pressure liquid supplied through a conduit 35a having inserted therein a pump 36, Fig. 6, operable to apply the full setting pressure to the prop. The low pressure water from a supply pipe 34, Fig. 5 (not shown), passes through the conduit 35a, through non-return valves 38, 40 of the pump 36, and then through the conduit 35 and a non-return valve in a valve casing 22 into an annular chamber 7 between the outer prop member 1 and inner prop member 2. From the chamber 7 the water passes through recesses 5 in a guiding ring 4 at the bottom of the inner member 2, into the working space of the prop, causing the prop to extend until the inner member 2 engages the mine roof. The pump 36 is then operated to apply the full setting pressure to the prop. One or more packings 6 are mounted on the inner prop member 2 beneath a closure cap 3. A bore 11 in the inner member 2 is so positioned as to move outside of the cap 3 at a predetermined maximum extension of the prop so that pressure liquid can escape from the working space to prevent the guide ring 4 from bearing against the packings 6. A spring element 12, for example, a rubber band extends along the prop axis between holders 16, 17 rotatably mounted in the lower end of the outer member 1 and in the upper end of the inner member 2 respectively, the element 12 serving to retract the prop when the pressure is released by means of a pressure relief valve in the valve casing 22. Specification 822,162 is referred to.
GB1389256A 1955-05-06 1956-05-04 Improvements in or relating to hydraulic pit props and liquid supply systems therefor Expired GB822161A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT263755 1955-05-06

Publications (1)

Publication Number Publication Date
GB822161A true GB822161A (en) 1959-10-21

Family

ID=25608428

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1389256A Expired GB822161A (en) 1955-05-06 1956-05-04 Improvements in or relating to hydraulic pit props and liquid supply systems therefor
GB3013457A Expired GB822162A (en) 1955-05-06 1956-05-04 Improvements relating to hydraulic pit props

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB3013457A Expired GB822162A (en) 1955-05-06 1956-05-04 Improvements relating to hydraulic pit props

Country Status (5)

Country Link
BE (1) BE547581A (en)
DE (2) DE1167298B (en)
FR (1) FR1197629A (en)
GB (2) GB822161A (en)
NL (3) NL111780C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1170353B (en) * 1960-09-22 1964-05-21 Bwg Bergwerk Walzwerk Device for setting hydraulic pit lining elements

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1266708B (en) * 1965-12-02 1968-04-25 Kloeckner Werke Ag Hydraulic extension arms with a double-acting back cylinder
PL2536919T3 (en) 2010-02-19 2014-12-31 Council Scient Ind Res A device for roof support of underground mine/tunnel

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE871585C (en) * 1950-01-17 1953-03-23 Edgar Tacke Hydraulic pit ram
DE973341C (en) * 1951-03-13 1960-01-28 Ewald Wiemann Maschf Valve for hydraulic pit ram
DE924142C (en) * 1951-04-08 1955-02-28 Ringfeder Gmbh Pit stamp
DE928945C (en) * 1951-06-09 1955-06-16 Eisenwerk Wanheim G M B H Adjustable hydraulic pit ram
DE918562C (en) * 1951-11-24 1954-09-30 Werner Sogalla Dr Ing Hydraulic pit ram
DE904858C (en) * 1951-12-04 1954-02-22 Wilhelm Reppel Back and forth pressure intensifier for pneumatic systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1170353B (en) * 1960-09-22 1964-05-21 Bwg Bergwerk Walzwerk Device for setting hydraulic pit lining elements

Also Published As

Publication number Publication date
NL111780C (en) 1965-09-15
DE1207316B (en) 1965-12-23
FR1197629A (en) 1959-12-02
NL6501191A (en) 1965-05-25
BE547581A (en) 1956-11-05
GB822162A (en) 1959-10-21
DE1167298B (en) 1964-04-09
NL6501190A (en) 1965-05-25

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