| 摘要 |
A vehicle platform scale includes a weighbridge platform mounted on transversely positioned load cell assemblies. Each load cell assembly is comprised of a deflectable load cell, a tray for supporting the load cell, and suspension means for suspending the load cell from the tray. The platform is mounted to the load cell assemblies such that loads on the platform are transmitted to the load cells producing a corresponding strain therein. Strain gauges mounted to the load cells produce output signals representing the strain of the load cells. Alternative load cell suspension configurations are disclosed for minimizing inaccuracies produced when a vehicle is miscentered on the platform thereby causing a tilt of a load cell within its tray. In one such configuration, the load cell is suspended from the tray by means of first and second spaced-apart pivots which permit rotational deflection of the intermediate portion of the load cell in response to an applied load. The pivots are aligned within an axial plane of the load cell, which axial plane is substantially neutral to both tensive and compressive transmitted loads. In various disclosed embodiments, the pivots are formed of pins projecting from each load cell that mate with seats or tracks in the tray, a ball affixed to, or hinged from the tray that mates with a socket on the load cell, or a pair of shackles that are pivotally mounted to both the load cell and the tray.
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