| 摘要 |
A running wheel structure for a trolley or a similar transport vehicle comprises a wheel support (2) with two fork arms designed to be mounted beneath the trolley or cart and between which a wheel (3) is mounted having on either side an annular indentation (14) between a peripheral rim portion (11) constituting externally the running surface (12) of the wheel and a central hub portion (10) with a continuous bore for the wheel shaft (4). On either side of the wheel the hub portion (10) is covered by a cap (7) designed as a comparatively narrow cupular shred catcher with a side wall (33) substantially equiform with and positioned at a short distance from the hub portion (10) and a bottom face(32) which is kept at a short distance from an end face (15) of the hub portion by a tube (17) inserted in the bore of the hub portion (10). The side wall (33) of the cap (30) terminates at a short distance from the bottom (13) of the indentation (14), thereby forming a comparatively narrow sluicing duct (34) between the cap (30) and the end and outer surfaces of the hub portion (10). <IMAGE>
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