Hydraulic advancing support frame
AssigneeDBT Deutsch Bergbau-Technik GmbH
InventorHans-Otto Friedrichs
Life of this patent
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Abstract
An advancing support frame is connected to the face conveyor (9) via an advancing rod (7) engaging with the advancing cylinder (5). A lifting cylinder (10) is supported on the advancing rod (7), with which the base shoes (1) are lifted during the advancing process. The lifting cylinder (10) is guided so as to be able to move in height in longitudinal guides (15) on the inner sides of the base shoes (1). A U-shaped tension stirrup (18), whose shanks (19) directed towards the ground have elongated holes (20), is supported centrally by the lifting cylinder (10) and joined to the base shoes (1) via carrying bolts (21) fastened to them.
Claims6
A hydraulic advancing support frame with two parallel base shoes as the mounting for a prop supporting a roof canopy, with an advancing cylinder supported on a cross-beam between the base shoes, whose extensible piston rod engages on the goaf side with an advancing rod, which is taken below the advancing cylinder and is linked on the face side to a face conveyor, and with a lifting cylinder supported on the advancing rod in an upright position for lifting the base shoes during the advancing process, in which the lifting cylinder is mounted in side guides on the base shoes so as to be able to slide in height and joined to said side guides via a U-shaped tension stirrup, which is supported centrally by the lifting cylinder.
Dependencies are inferred from the claim text.