Joining a suspension assembly to a composite trailer structure

1. A cargo vehicle comprising:

a composite floor assembly configured to support cargo;

at least one wheel assembly configured to transport the cargo on the composite floor assembly;

a suspension assembly associated with the at least one wheel assembly, wherein the suspension assembly comprises a left air bag and a right air bag; and

an intermediate adapter assembly permanently coupled to the composite floor assembly and removably coupled to the suspension assembly, wherein the adapter assembly comprises a left front frame member that rests upon the left air bag of the suspension assembly and a right front frame member that rests upon the right air bag of the suspension assembly.

2. A cargo vehicle comprising:

a composite floor assembly configured to support cargo;

at least one wheel assembly configured to transport the cargo on the composite floor assembly;

a suspension assembly associated with the at least one wheel assembly, wherein the suspension assembly comprises a left pivoting frame assembly and a right pivoting frame assembly; and

an intermediate adapter assembly permanently coupled to the composite floor assembly and removably coupled to the suspension assembly, wherein the adapter assembly comprises a left rear frame member that rests upon the left pivoting frame assembly of the suspension assembly and a right rear frame member that rests upon the right pivoting frame assembly of the suspension assembly.

3. A cargo vehicle comprising:

a composite floor assembly configured to support cargo;

at least one wheel assembly configured to transport the cargo on the composite floor assembly;

a suspension assembly associated with the at least one wheel assembly; and

an intermediate adapter assembly permanently coupled to the composite floor assembly and removably coupled to the suspension assembly, wherein the adapter assembly comprises:

an upper frame member that is permanently coupled to the composite floor assembly; and

at least one lower frame member that is removably coupled to the suspension assembly.

4. The cargo vehicle of claim 3 , wherein the upper frame member is removably coupled to the at least one lower frame member.

5. The cargo vehicle of claim 4 , wherein:

the upper frame member includes a first flange; and

the at least one lower frame member includes a second flange;

wherein the first flange of the upper frame member is removably coupled to the second flange of the at least one lower frame member.

6. The cargo vehicle of claim 5 , wherein the first and second flanges extend vertically to receive fasteners horizontally.

7. The cargo vehicle of claim 5 , wherein:

the composite floor assembly comprises a longitudinal support beam; and

the first flange of the upper frame member is located outboard of the longitudinal support beam.

8. A cargo vehicle comprising:

a composite floor assembly configured to support cargo, the composite floor assembly comprising a left longitudinal support beam and a right longitudinal support beam;

at least one wheel assembly configured to transport the cargo on the composite floor assembly;

a suspension assembly associated with the at least one wheel assembly; and

an adapter assembly positioned between the composite floor assembly and the suspension assembly, the adapter assembly defining a left channel that receives the left longitudinal support beam of the composite floor assembly and a right channel that receives the right longitudinal support beam of the composite floor assembly.

9. The cargo vehicle of claim 8 , wherein the suspension assembly comprises:

a left pivoting frame assembly centered beneath the left longitudinal support beam of the composite floor assembly and the left channel of the adapter assembly; and

a right pivoting frame assembly centered beneath the right longitudinal support beam of the composite floor assembly and the right channel of the adapter assembly.

10. The cargo vehicle of claim 8 , wherein the adapter assembly comprises:

an upper left flange that extends vertically upward over an outer left side of the left longitudinal support beam;

an upper right flange that extends vertically upward over an outer right side of the right longitudinal support beam;

a lower left flange that extends vertically downward over an outer left side of the suspension assembly; and

a lower right flange that extends vertically downward over an outer right side of the suspension assembly.

11. The cargo vehicle of claim 8 , wherein the adapter assembly comprises:

at least one left chamfered edge in contact with the left longitudinal support beam; and

at least one right chamfered edge in contact with the right longitudinal support beam.

12. The cargo vehicle of claim 8 , wherein each of the left and right longitudinal support beams comprises a plurality of stiffening ribs adjacent to the adapter assembly.

13. A method of joining a suspension assembly of a cargo vehicle to a composite floor assembly of the cargo vehicle, the composite floor assembly having a left longitudinal support beam and a right longitudinal support beam, the method comprising the steps of:

providing an intermediate adapter assembly that defines a left channel and a right channel;

positioning the left longitudinal support beam of the composite floor assembly in the left channel of the intermediate adapter assembly and the right longitudinal support beam of the composite floor assembly in the right channel of the intermediate adapter assembly;

permanently coupling the adapter assembly to the composite floor assembly; and

removably coupling the adapter assembly to the suspension assembly.

14. The method of claim 13 , wherein the permanently coupling step comprises adhering the adapter assembly to the composite floor assembly by placing an adhesive in the left and right channels.

15. The method of claim 13 , wherein the permanently coupling step is performed without forming holes in the composite floor assembly.

16. The method of claim 13 , wherein the removably coupling step comprises mechanically fastening the adapter assembly to the suspension assembly.