Apparatus for use in mining or tunnelling installations
AssigneeGewerkschaft Eisenhutte Westfalia
InventorGiselher Fritz
Life of this patent
Estimating the term…
Abstract
Apparatus for use in mining or tunnelling installations comprises a shield for housing excavation machinery, and a floor sill for supporting said machinery. The shield is constituted by a plurality of generally cylindrical sections. Means are provided for advancing the shield whilst the floor sill is held stationary. Means are also provided for advancing the floor sill whilst the shield is held stationary.
Claims24
Apparatus for supporting and shielding excavation machinery for use in mining or tunnelling operations, said apparatus comprising:
- a. a floor sill for supporting said machinery;
- b. a shield for shielding said machinery, said shield being constituted by a plurality of generally cylindrical shield sections;
- c. means for advancing said shield whilst said floor sill remains stationary;
- and
- d. means for advancing said floor sill whilst said shield remains stationary;
- whereby, during operation, said shield is advanced relative to said floor sill and then subsequently, said floor sill is drawn up to follow the advancement of said shield.
Apparatus for supporting and shielding excavation machinery for use in mining or tunnelling operations, said apparatus comprising:
- a. A floor sill for supporting said machinery;
- b. a shield for shielding said machinery, said shield being constituted by a plurality of generally cylindrical shield sections;
- and
- c. means for advancing said shield whilst said floor sill remains stationary and for advancing said floor sill whilst said shield remains stationary;
- whereby, during operation, said shield is advanced relative to said floor sill and then subsequently, said floor sill is drawn up to follow the advancement of said shield.
Apparatus for supporting and shield excavation machinery for use in mining or tunnelling operations, said apparatus comprising:
- a. a floor sill for supporting said machinery, said floor sill being subdivided, in the longitudinal direction, into three sill sections;
- b. a shield for shielding said machinery, said shield being constituted by three generally cylindrical shield sections each of which comprises a frame, a sill beam and a shield member mounted thereon;
- c. a first set of hydraulic advancing rams for advancing said shield sections one after another whilst said floor sill remains stationary, said rams of said first set acting between said frames of each pair of adjacent shield sections;
- and
- d. a second set of hydraulic advancing rams for advancing said floor sill whilst said shield remains stationary, said rams of said second set acting between said sill sections and said sill beams of said shield sections;
- whereby, during operation, said shield sections are advanced one after another relative to said floor sill and then subsequently, said floor sill sections are drawn up to follow the advancement of said shield.
Dependencies are inferred from the claim text.