Advance mechanism for a mine roof support unit

Patent · Mon Feb 04 23:00:00 EST 1980

OSTI ID:5835334

Dodt, J; Plevak, L

The invention relates to an advance mechanism for a roof support unit to be used in a longwall face of a mineral mining working. The advance mechanism comprises a hydraulic advance ram and guide means constituted by a guide rod means and a guide rail. One end of the guide rod means is attached to a conveyor extending along the longwall face, the other end of the guide rod means being attached to a guide element. The guide rail extends slidably through a guide aperture in the guide element and is pivotally attached to the floor sill of the roof support unit for pivotal movement in a vertical plane perpendicular to the longwall face. The hydraulic advance ram is attached to the guide element and acts on a member fixed to the floor sill.

• Assignee: Gewerkschaft Eisenhutte Westfalia (Germany, Federal Republic Of)
• Patent Number(s): US 4187042
• OSTI ID: 5835334
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
012000* -- Coal
Lignite
& Peat-- Mining
AUTOMATION
COAL MINING
DESIGN
EQUIPMENT
HYDRAULIC EQUIPMENT
LONGWALL MINING
MECHANICAL STRUCTURES
MINING
MINING EQUIPMENT
ROOFS
STRATA CONTROL
SUPPORTS
UNDERGROUND MINING