| 摘要 |
An improved cotton module builder which has a motorized bridge assembly. The cotton module builder includes a bin, a pair of tracks mounted adjacent the top of the bin and a tamper for tamping the cotton. A bridge supports the tamper. Wheels are provided for rollingly supporting the body of the bridge on the tracks. Hydraulic motors are supported by the bridge body and operably coupled to the wheels for moving the bridge along the tracks. A hydraulic source is provided which is remote from the bridge and is coupled to the hydraulic motors located on the bridge for actuating the hydraulic motors to move the bridge along the tracks. Stabilizing wheels are provided at opposite ends of the bridge for preventing racking of the bridge. The stabilizing wheels respectively engage the webs of a pair of I-beams, the upper surfaces of which form the tracks. In a modification of the cotton module builder each of the wheels is driven directly by a separate hydraulic motor. In another modification the stabilizing wheels are respectively urged against the webs by compression springs. In still another modification pulling assemblies respectively pull the wheels against the tracks to increase traction.
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