| 摘要 |
Freewheel flow track systems for transporting pallets and/or cartons in heavy-duty pallet and carton flow applications are disclosed. According to certain embodiments of the invention, a flow track system comprising multiple longitudinally extending, parallel track sub-assemblies is disclosed. The track sub-assemblies each comprise multiple wheel assemblies mounted to a track frame and arranged in a row extending from an entrance end of the track assembly to an exit end of the track assembly. Each wheel assembly comprises an axle and a polycarbonate resin wheel rotatably mounted on the axle. A lubricant coating is fixed to and bonded with the axle. The wheel is constructed from a polycarbonate-based resin that is impregnated with a lubricant for providing lifetime lubrication to the wheels. The wheel includes a hub, a rim concentric with the hub, a web connecting the hub to the rim, and ribs connecting the hub to the rim through the web. According to other embodiments of the invention, a flow track system including a single track assembly is disclosed. The track assembly includes multiple wheel assemblies mounted on a track frame and arranged in a row extending from an entrance end of the track assembly to an exit end of the track assembly. In these embodiments, each wheel assembly includes an axle and multiple polycarbonate resin wheels rotatably mounted on the axle. The flow track systems disclosed by the invention have a high load capacity, and the wheel assemblies of the flow track systems have a low coefficient of friction, high rollability and high durability. Therefore, the freewheel flow track systems disclosed by the invention provide reliable, efficient and safe pallet and carton flow.
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