| 摘要 |
To increase the load carrying capacity of a truck employing a separable power module having a sub-frame coupled to the main frame of a forward steerable unit and trailing therefrom, a trailing or tag axle assembly has its trailing arms coupled to the sub-frame of the power module through transverse axis non-slip rubber bushings. The tag axle proper is coupled to the rear ends of the trailing arms through longitudinal axis non-slip rubber bushings. The tag axle assembly includes seats for air springs disposed directly over the tag axle and carried by an extension of the main frame of the forward steerable unit. Stresses induced by sharp turning of the vehicle are transmitted to the sub-frame of the power module and not to the main frame of the vehicle resulting in better steerability and less wear and tear on tires and mechanical structures. The increased load carrying capacity of the truck is obtained with a minimal weight increase and with comparatively low cost of manufacturing.
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