[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

EP2698500A3 - Prop - Google Patents

Prop Download PDF

Info

Publication number
EP2698500A3
EP2698500A3 EP13174793.3A EP13174793A EP2698500A3 EP 2698500 A3 EP2698500 A3 EP 2698500A3 EP 13174793 A EP13174793 A EP 13174793A EP 2698500 A3 EP2698500 A3 EP 2698500A3
Authority
EP
European Patent Office
Prior art keywords
prop
water
members
yielding
controls
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.)
Withdrawn
Application number
EP13174793.3A
Other languages
German (de)
French (fr)
Other versions
EP2698500A2 (en
Inventor
Christian Nissen
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.)
MINE SUPPORT PRODUCTS Pty Ltd
Original Assignee
MINE SUPPORT PRODUCTS Pty 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 MINE SUPPORT PRODUCTS Pty Ltd filed Critical MINE SUPPORT PRODUCTS Pty Ltd
Publication of EP2698500A2 publication Critical patent/EP2698500A2/en
Publication of EP2698500A3 publication Critical patent/EP2698500A3/en
Withdrawn legal-status Critical Current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
    • E21D15/14—Telescopic props
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
    • 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
    • E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/285—Telescopic props with parts held relatively to each other by friction or gripping by means of wedges or wedge combinations
    • 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

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)
  • Fluid-Damping Devices (AREA)
  • Sealing Devices (AREA)
  • Multiple-Way Valves (AREA)

Abstract

A prop which includes first and second telescopically engaged tubular members, wherein at least one member is internally pressurized with water and wherein yielding is controlled by means of a friction ring acting between opposing surfaces of the two members and by a release valve which controls the pressure of the water.
EP13174793.3A 2012-08-17 2013-07-02 Prop Withdrawn EP2698500A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA201206199 2012-08-17

Publications (2)

Publication Number Publication Date
EP2698500A2 EP2698500A2 (en) 2014-02-19
EP2698500A3 true EP2698500A3 (en) 2017-06-21

Family

ID=48782895

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13174793.3A Withdrawn EP2698500A3 (en) 2012-08-17 2013-07-02 Prop

Country Status (3)

Country Link
US (1) US20140050538A1 (en)
EP (1) EP2698500A3 (en)
AU (1) AU2013206571A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103912294B (en) * 2014-03-19 2016-05-18 北京天地玛珂电液控制系统有限公司 A kind of working surface hydraulic support group linearity control method that uses optical fiber
CN107905825A (en) * 2017-10-31 2018-04-13 山东里能鲁西矿业有限公司 It is a kind of new for no coal pillar mining and erosion control yield timbering
CN109057837A (en) * 2018-09-18 2018-12-21 安徽宝龙电器有限公司 A kind of self-adaptive hydraulic struts based on automatic monitoring system
CN113006837A (en) * 2021-02-03 2021-06-22 陕西陕煤韩城矿业有限公司 Modular single hydraulic prop

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2474464A (en) * 1947-04-24 1949-06-28 Cable Richard George Pit prop and the like
US3281107A (en) * 1965-12-15 1966-10-25 Ohio Brass Co Hydraulic support prop
US5720581A (en) * 1993-05-07 1998-02-24 Dorbyl Limited Support prop
US5921718A (en) * 1995-04-20 1999-07-13 Kolk; Theodor Prop for use in underground mining or tunnel construction
ZA996333B (en) * 1998-09-25 2000-04-10 Mine Support Products Propriet Support.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1765200A (en) * 1927-11-17 1930-06-17 Bullough Enoch Pit prop
SU1735592A1 (en) * 1986-11-27 1992-05-23 Институт Горного Дела Со Ан Ссср Hydraulic prop
ZA956530B (en) 1994-05-05 1996-05-23 Advanced Mining Software Ltd Prop

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2474464A (en) * 1947-04-24 1949-06-28 Cable Richard George Pit prop and the like
US3281107A (en) * 1965-12-15 1966-10-25 Ohio Brass Co Hydraulic support prop
US5720581A (en) * 1993-05-07 1998-02-24 Dorbyl Limited Support prop
US5921718A (en) * 1995-04-20 1999-07-13 Kolk; Theodor Prop for use in underground mining or tunnel construction
ZA996333B (en) * 1998-09-25 2000-04-10 Mine Support Products Propriet Support.

Also Published As

Publication number Publication date
EP2698500A2 (en) 2014-02-19
US20140050538A1 (en) 2014-02-20
AU2013206571A1 (en) 2014-03-06

Similar Documents

Publication Publication Date Title
EP4427712A3 (en) Methods and systems for providing or maintaining fluid flow through body passages
WO2013069018A3 (en) Ocular implant with intraocular fluid pressure regulation
CA2833275C (en) Delivering and/or receiving bodily fluids
EP2801739A3 (en) Gasket pressure sensor
TW201612053A (en) Systems and methods for supporting telescoping elements
WO2015020849A3 (en) Hydraulic cycle opening sleeve
EP2960498A3 (en) Rapidly modulated hydraulic supply for a robotic device
EP2520840A3 (en) Expandable hose assembly
EP2960429A3 (en) Straddle packer system
GB2530423A (en) Travel joint release devices and methods
GB2529087A (en) Travel joint release devices and methods
EP2975305A3 (en) Polymer seal assembly
EP2833040A3 (en) Handle insert for valve
WO2015114125A3 (en) A hydraulic system for a vehicle
EP3557143A3 (en) A local thermal energy consumer assembly and a local thermal energy generator assembly for a district thermal energy distribution system
FR3009849B1 (en) REVERSIBLE HYDRAULIC PRESSURE CONVERTER WITH TUBULAR VALVES
EP3009688A3 (en) Device for locking rod member using lock block
EP2698500A3 (en) Prop
WO2016007666A3 (en) Positive lock system
WO2014108405A3 (en) Cylinder release arrangement
WO2014136066A3 (en) Flow body with low-friction surface structure
WO2011124398A8 (en) Protective device for a pressure line, pressure line section and hydraulic system
EP3021188A8 (en) Pressure reduction valve and gas supply device
WO2015148540A3 (en) Hydraulic jar and a flow control device usable in the hydraulic jar
EP2728216A3 (en) Telescopic spring unit with a control device

Legal Events

Date Code Title Description
AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

RIN1 Information on inventor provided before grant (corrected)

Inventor name: NISSEN, CHRISTIAN

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIC1 Information provided on ipc code assigned before grant

Ipc: E21D 15/28 20060101AFI20170516BHEP

Ipc: E21D 15/51 20060101ALI20170516BHEP

Ipc: E21D 15/44 20060101ALI20170516BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20171222