CS252801B2 - Hydraulic prop - Google Patents

Hydraulic prop

Info

Publication number
CS252801B2
CS252801B2 CS76223A CS22376A CS252801B2 CS 252801 B2 CS252801 B2 CS 252801B2 CS 76223 A CS76223 A CS 76223A CS 22376 A CS22376 A CS 22376A CS 252801 B2 CS252801 B2 CS 252801B2
Authority
CS
Czechoslovakia
Prior art keywords
hydraulic prop
prop
hydraulic
Prior art date
Application number
CS76223A
Other languages
Czech (cs)
Other versions
CS22376A2 (en
Inventor
Karoly Balasz
Jozsef Korbuly
Laszlo Nemeth
Janos Viragh
Laszlo Zachar
Original Assignee
Banyaszati Kutato Intezet
Mecseki Szenbanyak
Szekesfehervari Koennyuefemmue
Tatabanyai Szenbanyak
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 Banyaszati Kutato Intezet, Mecseki Szenbanyak, Szekesfehervari Koennyuefemmue, Tatabanyai Szenbanyak filed Critical Banyaszati Kutato Intezet
Priority to CS868097A priority Critical patent/CS259543B2/en
Publication of CS22376A2 publication Critical patent/CS22376A2/cs
Publication of CS252801B2 publication Critical patent/CS252801B2/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
    • E21D15/14—Telescopic props
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/06—Foundation trenches ditches or narrow shafts
    • E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
    • E02D17/086—Travelling trench shores
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G25/00—Shores or struts; Chocks
    • E04G25/04—Shores or struts; Chocks telescopic
    • E04G2025/047—Shores or struts; Chocks telescopic which telescoping action effected by a piston

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Forging (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Check Valves (AREA)
  • Safety Valves (AREA)
  • Fluid-Damping Devices (AREA)
CS76223A 1975-01-15 1976-01-13 Hydraulic prop CS252801B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CS868097A CS259543B2 (en) 1975-01-15 1986-11-10 Hydraulic mine prop

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU76BA3188A HU171077B (en) 1975-01-15 1975-01-15 Hydraulic prop

Publications (2)

Publication Number Publication Date
CS22376A2 CS22376A2 (en) 1987-03-12
CS252801B2 true CS252801B2 (en) 1987-10-15

Family

ID=10993392

Family Applications (2)

Application Number Title Priority Date Filing Date
CS76223A CS252801B2 (en) 1975-01-15 1976-01-13 Hydraulic prop
CS868097A CS259543B2 (en) 1975-01-15 1986-11-10 Hydraulic mine prop

Family Applications After (1)

Application Number Title Priority Date Filing Date
CS868097A CS259543B2 (en) 1975-01-15 1986-11-10 Hydraulic mine prop

Country Status (11)

Country Link
AT (3) AT350026B (en)
BE (1) BE837562A (en)
BG (1) BG36048A3 (en)
CS (2) CS252801B2 (en)
DD (2) DD123216A5 (en)
DE (1) DE2600461C3 (en)
FR (1) FR2297994A1 (en)
HU (1) HU171077B (en)
PL (1) PL108022B1 (en)
RO (1) RO73938A (en)
YU (1) YU37216B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2368604A1 (en) * 1976-10-19 1978-05-19 Perrier Henri Hydraulic mining prop placing equipment - comprises mobile machine with extensible boom and hydraulic system for supplying pressure fluid to prop
DE8808519U1 (en) * 1988-07-04 1989-11-02 Heiliger, Martha-Catharina, 5166 Kreuzau Hydraulic steel pit ram
DE4323462C2 (en) * 1993-07-14 1995-05-04 Vos Richard Grubenausbau Gmbh Removal stamp for underground use with integrated pressure relief valve
CN103644166A (en) * 2013-12-26 2014-03-19 淮北安来机电装备有限公司 Oil/air cylinder with single cylindrical surface guide in inner cylinder hole

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1834506A (en) * 1929-02-25 1931-12-01 Standard Lift Company Hydraulic elevator
GB538277A (en) * 1940-01-18 1941-07-28 William Herbert Smith Improvements relating to mine roof or like supports
US2379949A (en) * 1943-03-04 1945-07-10 Fred S Carver Hydraulic device
DE971164C (en) * 1944-02-04 1958-12-18 F W Moll Soehne Maschinenfabri Pit punch head
FR939620A (en) * 1946-03-14 1948-11-19 Hydraulic lifting device permanently mounted on a vehicle to lift it
FR1005572A (en) * 1947-08-12 1952-04-11 Iron profile for mine support
DE924022C (en) * 1952-07-04 1955-02-24 Ringfeder Gmbh Crown plate movably arranged by means of a ball joint in the pressure piece of a pit punch
DE1085121B (en) * 1955-02-26 1960-07-14 Hoesch Ag Pressurized pit stamp
US2961839A (en) * 1956-08-28 1960-11-29 Fausto A Aresti Hydraulic compression member
BE630020A (en) * 1963-03-25
FR1549102A (en) * 1966-12-31 1968-12-06
GB1356008A (en) * 1971-09-17 1974-06-12 Coal Industry Patents Ltd Mine roof supports

Also Published As

Publication number Publication date
BG36048A3 (en) 1984-08-15
PL108022B1 (en) 1980-03-31
CS259543B2 (en) 1988-10-14
YU8476A (en) 1983-04-27
AT368601B (en) 1982-10-25
AT355536B (en) 1980-03-10
ATA103278A (en) 1979-08-15
CS809786A2 (en) 1988-02-15
CS22376A2 (en) 1987-03-12
ATA513476A (en) 1982-02-15
HU171077B (en) 1977-11-28
FR2297994B1 (en) 1982-10-08
ATA16176A (en) 1978-10-15
DE2600461C3 (en) 1978-11-16
DD123216A5 (en) 1976-12-05
DE2600461B2 (en) 1978-03-30
DD209876A5 (en) 1984-05-23
FR2297994A1 (en) 1976-08-13
DE2600461A1 (en) 1976-07-22
AT350026B (en) 1979-05-10
BE837562A (en) 1976-05-03
RO73938A (en) 1980-10-30
YU37216B (en) 1984-08-31

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