| 摘要 |
<p>Anti-skid device of the type including an arm (21), carrying in its outer end a chain provided pulley that is brought in contact with a vehicle wheel so that the chains are thrown in under the vehicle wheel. The arm is in its inner end journaled in a U-shaped or fork-shaped bracket (26) via a short axle (22) that in its ends rests in bowl shaped semisspherical (24) bearings (25) that are threaded in the legs of the bracket (26), the bearing bowls (25) are pretensioned against the axle (23). At the apex of the shaft's spherical ends recesses are made that take up lubrication grease and in this way a point-like contact between the bearing shells and the axle is eliminated.</p> |
