GB846730A - Improvements in or relating to hydraulic mine supporting devices - Google Patents

Improvements in or relating to hydraulic mine supporting devices

Info

Publication number
GB846730A
GB846730A GB837957A GB837957A GB846730A GB 846730 A GB846730 A GB 846730A GB 837957 A GB837957 A GB 837957A GB 837957 A GB837957 A GB 837957A GB 846730 A GB846730 A GB 846730A
Authority
GB
United Kingdom
Prior art keywords
piston
pressure
disc
relating
supporting devices
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
GB837957A
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.)
EBERHARD VON CAMPENHAUSEN
WILLY EGGEMANN
Original Assignee
EBERHARD VON CAMPENHAUSEN
WILLY EGGEMANN
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 EBERHARD VON CAMPENHAUSEN, WILLY EGGEMANN filed Critical EBERHARD VON CAMPENHAUSEN
Publication of GB846730A publication Critical patent/GB846730A/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
    • E21D15/14—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
    • E21D15/14—Telescopic props
    • E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
    • E21D15/22—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with member, pin, cross- piece, or the like, ruptured, sheared through, or permanently deformed upon excessive pressure
    • 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

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)
  • Actuator (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)

Abstract

846,730. Hydraulic pit props. EGGEMANN, W., and CAMPENHAUSEN von, E. [trading as SCHWARZ, KOMM.-GES., H.]. March 14, 1957 [March 23, 1956], No. 8379/57. Class 20(2) Excessive pressure in the pressure chamber 26 of a telescopic hydraulic pit prop, fractures a disc 12 and releases a small quantity of the pressure liquid to a chamber 13 forcing a piston rod 15 out by a piston 14 as an indication of this pressure release and the piston 14 opens a pipe 17 to a further piston and cylinder with a disc 121 which fractures at a higher pressure and makes a similar connection to a further disc 1211 and piston and cylinder 111. In a modification Fig. 3 (not shown) the cylinders may all be connected to a common pipe.
GB837957A 1956-03-23 1957-03-14 Improvements in or relating to hydraulic mine supporting devices Expired GB846730A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH19818A DE1000315B (en) 1956-03-23 1956-03-23 Multi-part hydraulic support element for excavation work

Publications (1)

Publication Number Publication Date
GB846730A true GB846730A (en) 1960-08-31

Family

ID=7428586

Family Applications (1)

Application Number Title Priority Date Filing Date
GB837957A Expired GB846730A (en) 1956-03-23 1957-03-14 Improvements in or relating to hydraulic mine supporting devices

Country Status (2)

Country Link
DE (1) DE1000315B (en)
GB (1) GB846730A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2636791A1 (en) * 1975-09-09 1977-03-17 Voest Ag HYDRAULIC PIT STAMP
CN101864972A (en) * 2010-06-04 2010-10-20 中煤北京煤矿机械有限责任公司 Small supporting point full-protection-type tunnel bracket and supporting method thereof

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1078516B (en) * 1956-07-17 1960-03-31 Bwg Bergwerk Walzwerk Compliant hydraulic pit ram
NL251933A (en) * 1959-07-03
CN106884668A (en) * 2017-03-14 2017-06-23 苏州蓝王机床工具科技有限公司 A kind of structure of hydraulic pressure breaking-off timber

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2636791A1 (en) * 1975-09-09 1977-03-17 Voest Ag HYDRAULIC PIT STAMP
CN101864972A (en) * 2010-06-04 2010-10-20 中煤北京煤矿机械有限责任公司 Small supporting point full-protection-type tunnel bracket and supporting method thereof

Also Published As

Publication number Publication date
DE1000315B (en) 1957-01-10

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