E - Fixed Constructions – 21 – C
Patent
E - Fixed Constructions
21
C
E21C 27/36 (2006.01)
Patent
CA 2736867
The present invention relates to a self-propelled surface cutter, preferably in the form of an asphalt cutter, a snow cutter or a surface miner, having working equipment including a rotatingly drivable roller body, and having at least one roller drive unit which is received in the interior of the roller body and forms at least one part of a rotatable support of the roller body at a roller carrier frame, wherein the rotatable support of the roller body includes at least two roller bearing arrangements which support the roller body at two roller carrier frame parts engaging around the roller body at the end face, wherein each of the named two roller bearing arrangements on its own forms a statically determined or overdetermined radial and axial support which includes at least two mutually spaced apart bearing points and supports the roller body at the respective roller carrier frame part in an axially and radially fixed manner and/or at a fixed angle to one another so that the roller body overall is supported with static overdetermination at the roller carrier frame. In accordance with the invention, an axial compensation apparatus for compensating deviations of the axial spacing of the two roller bearing arrangements from the axial spacing of the bearing fastening points of the roller carrier frame parts is provided at the roller carrier frame and/or between the roller carrier frame and one of the roller bearing arrangements. An axial restriction and axial overloads of the roller bearing arrangements are hereby avoided which are themselves tilt-resistant as well as radially fixed and axially fixed and thus axially non-resilient, which in turn suppresses or avoids overload and offset impairing the leak-tightness of the sealing elements for sealing the at least one drive unit. Sealing apparatus such as floating ring seals which are more sensitive to offset, but which seal better, can hereby be used.
Graner Klaus
Hausladen Norbert
Schindler Viktor
Liebherr-Werk Biberach Gmbh
Shapiro Cohen
LandOfFree
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