| 摘要 |
In the embodiment of a wheel arrangement described in the specification, the central portion of a wheel is in the form of a disk having an annular planar attachment zone surrounding a central hole for engagement with the substantially planar face of a hub. Bolt holes evenly distributed about the annular attachment zone of the disk receive stud bolts mounted in the hub so that the wheel disk and the hub are held in angularly fixed position with respect to each other. The hub has a centering offset projecting axially from its planar face which is located concentrically with a trunnion and has the shape of a circular annulus with a slightly conically tapered peripheral surface which engages the central hole of the wheel disk so as to center the wheel precisely with respect to the trunnion. The wheel disk is removably attached to the hub by a central nut screwed onto the trunnion which engages a substantially circular axially-resilient clamp disk having a central hole and a series of oblong holes located on a bolt circle concentric therewith. The oblong bolt holes receive the hub stud bolts and are engaged in annular groove-like undercuts formed therein so as to clamp the wheel disk firmly against the hub when the central nut is tightened.
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