PL288947A1 - Valve for damping rock mass bounces - Google Patents

Valve for damping rock mass bounces

Info

Publication number
PL288947A1
PL288947A1 PL91288947A PL28894791A PL288947A1 PL 288947 A1 PL288947 A1 PL 288947A1 PL 91288947 A PL91288947 A PL 91288947A PL 28894791 A PL28894791 A PL 28894791A PL 288947 A1 PL288947 A1 PL 288947A1
Authority
PL
Poland
Prior art keywords
valve
rock mass
bounces
damping rock
damping
Prior art date
Application number
PL91288947A
Other versions
PL164702B1 (en
Inventor
Ernst Mateja
Felix Ecker
Original Assignee
Ecker Gmbh Maschbau
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 Ecker Gmbh Maschbau filed Critical Ecker Gmbh Maschbau
Publication of PL288947A1 publication Critical patent/PL288947A1/en
Publication of PL164702B1 publication Critical patent/PL164702B1/en

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)
  • Lift Valve (AREA)
  • Check Valves (AREA)
PL91288947A 1990-02-06 1991-02-04 Valve for damping rock mass bounces PL164702B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4003465A DE4003465A1 (en) 1990-02-06 1990-02-06 Pressure relief valve for hydraulic pip-prop - has gas spring to hold valve piston on its seat

Publications (2)

Publication Number Publication Date
PL288947A1 true PL288947A1 (en) 1991-12-02
PL164702B1 PL164702B1 (en) 1994-10-31

Family

ID=6399521

Family Applications (1)

Application Number Title Priority Date Filing Date
PL91288947A PL164702B1 (en) 1990-02-06 1991-02-04 Valve for damping rock mass bounces

Country Status (5)

Country Link
CS (1) CS28291A2 (en)
DE (1) DE4003465A1 (en)
HU (1) HUT56607A (en)
PL (1) PL164702B1 (en)
ZA (1) ZA91893B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103953372B (en) * 2012-07-04 2016-02-10 巨隆集团芜湖兴隆液压有限公司 A kind of nitrogen safety valve for colliery comprehensive mining hydraulic bracket
CN105065735A (en) * 2015-07-16 2015-11-18 苏州华达仪器设备有限公司 Intelligent pressure regulating valve
CN112576565B (en) * 2020-11-27 2023-08-22 北京天玛智控科技股份有限公司 Inflatable safety valve

Also Published As

Publication number Publication date
ZA91893B (en) 1991-10-30
DE4003465A1 (en) 1991-08-08
PL164702B1 (en) 1994-10-31
HUT56607A (en) 1991-09-30
CS28291A2 (en) 1991-09-15
HU910376D0 (en) 1991-08-28

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