Onboard weighing system for truck having single point suspension
First Claim
1. A single point vehicle suspension including a weight monitoring apparatus, the suspension comprising:
- a trunnion shaft;
means for attaching the shaft to a vehicle frame;
an axle spring assembly mounted to the trunnion shaft outboard of and spaced from the means for attaching; and
,means mounted to the trunnion shaft intermediate the means for attaching and the axle spring assembly for measuring changes in shear strain in the shaft.
2 Assignments
0 Petitions
Accused Products
Abstract
A trunnion mount single point vehicle suspension including a load monitoring apparatus. The suspension includes a trunnion shaft, means for attaching the shaft to a vehicle frame and an axle spring assembly mounted to the trunnion shaft and spaced from the attachment means. It also includes strain measuring means mounted in the trunnion shaft between the attaching means and the axle spring assembly for measuring changes in the shaft. In one embodiment the means for attaching the trunnion shaft to the vehicle frame is a trunnion hanger mounted inboard of the axle spring assembly. In another embodiment the attaching means is a clevis bracket which straddles the axle spring assembly. Also disclosed is a load monitoring apparatus for measuring the weight imposed by the trailer at its mounting point on the tractor. The apparatus includes at least one pin load cell having spaced shear strain measuring means and trailer mounting means attached to the pin cell intermediate the shear strain measuring means.
37 Citations
14 Claims
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1. A single point vehicle suspension including a weight monitoring apparatus, the suspension comprising:
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a trunnion shaft; means for attaching the shaft to a vehicle frame; an axle spring assembly mounted to the trunnion shaft outboard of and spaced from the means for attaching; and
,means mounted to the trunnion shaft intermediate the means for attaching and the axle spring assembly for measuring changes in shear strain in the shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A single point vehicle suspension system including a weight monitoring apparatus, the suspension comprising:
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first and second spaced means for attaching a trunnion shaft to a vehicle frame; a trunnion shaft having a center portion extending between and attached to each of the first and second means for attaching the trunnion shaft and opposing first and second outboard end portions attached to the first and second means for attaching, respectively; first and second axle spring assemblies mounted on the first and second outboard end portions respectively, outboard of and spaced from the first and second attaching means, respectively; means mounted to the first outboard end portion intermediate to first means for attaching and the first axle spring assembly for measuring changes in shear strain in the shaft. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification