GB1050524A - - Google Patents

Info

Publication number
GB1050524A
GB1050524A GB1050524DA GB1050524A GB 1050524 A GB1050524 A GB 1050524A GB 1050524D A GB1050524D A GB 1050524DA GB 1050524 A GB1050524 A GB 1050524A
Authority
GB
United Kingdom
Prior art keywords
abutment
prop
extension
sections
hydraulic pit
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.)
Active
Application number
Other languages
English (en)
Publication of GB1050524A publication Critical patent/GB1050524A/en
Active 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
    • E21D15/48—Chocks or the like
    • E21D15/486—Chocks or the like with essential hydraulic or pneumatic details

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)
  • Jib Cranes (AREA)
GB1050524D Active GB1050524A (de)

Publications (1)

Publication Number Publication Date
GB1050524A true GB1050524A (de)

Family

ID=1755838

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1050524D Active GB1050524A (de)

Country Status (1)

Country Link
GB (1) GB1050524A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992001858A1 (de) * 1990-07-24 1992-02-06 Nlw Fördertechnik Gmbh Mehrstufiger hydraulischer grubenstempel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992001858A1 (de) * 1990-07-24 1992-02-06 Nlw Fördertechnik Gmbh Mehrstufiger hydraulischer grubenstempel

Similar Documents

Publication Publication Date Title
US5069488A (en) Method and a device for movement-compensation in riser pipes
NO840285L (no) Anordning ved broennboreinnretning
GB1050524A (de)
DK0543806T3 (da) Bjergboremaskine med hydraulisk drev i borehullet
CN204200762U (zh) 矿用设备进给油缸
GB977800A (en) Improvements in or relating to mine roof supports
CN216666090U (zh) 一种新型坑道钻机用主油缸
US3046949A (en) Props or jacks
CN202007674U (zh) 整体密封立柱
GB837916A (en) Improvements relating to telescopic tubular pit props
GB980581A (en) Improvements in hydraulic roof supports or chocks for mines
GB880173A (en) Improvements in or relating to pressure fluid rams
CN209370199U (zh) 推力水液压缸
CN216841664U (zh) 一种煤矿局部顶板液压胀裂器
RU2024764C1 (ru) Телескопическая гидростойка постоянного сопротивления
CN209781340U (zh) 缓冲油缸
CN219935333U (zh) 一种控压取土器
SU739243A1 (ru) Гидравлическа стойка с двойной телескопичностью
SU785506A1 (ru) Гидравлическа стойка шахтной крепи
CN108590718B (zh) 立柱止缩阀
GB898987A (en) Improvements in or relating to hydraulic supports
WO2024036036A3 (en) Piston assemblies and cylinders that control gas flow
DE69211701D1 (de) Verbesserungen an hydraulischen arbeitszylindern
RU48526U1 (ru) Стрела телескопическая
GB626806A (en) Improvements in or relating to pressure operated jack systems