Space frame dump body pivot, suspension node, and rear frame connection

Patent metadata

Field	Value
Publication number	US-11040648-B2
Application number	US-201916663815-A
Country	US
Kind code	B2
Filing date	Oct 25, 2019
Priority date	Oct 25, 2019
Publication date	Jun 22, 2021
Grant date	Jun 22, 2021

Abstract

A dump body pivot pin, suspension node, and rear frame connection comprises a dump body pivot pin boss, a rear suspension connection boss, outer and inner upper rear frame tube connection bosses, outer and inner lower rear frame tube connection bosses, upper and lower beams, a beam connection web, and a support tube connection boss. The dump pivot pin boss has a pivot bore, a pin bore center axis, and inner and outer flat surfaces. The rear suspension connection boss includes a suspension connection center axis and inner and outer flat surfaces. The upper beam connects the outer and inner upper rear frame tube connection bosses to the dump body pivot pin boss. The lower beam connects the outer lower rear frame connection boss to the rear suspension connection boss and the dump body pivot pin boss and the inner lower rear frame tube connection boss to the dump body pivot pin boss.

First claim

The invention claimed is:

1. A space frame dump body pivot pin, suspension node, and rear frame connection system for a space frame of a rear haul truck, comprising:
a first seven-point dump body pivot pin, suspension node, and rear frame connection casting; and
a second seven-point dump body pivot pin, suspension node, and rear frame connection casting spaced from the first seven-point truck body pivot pin, suspension node, and rear frame connection casting in a width direction of the space frame,
wherein each of the first and second seven-point truck body pivot pin, suspension node, and rear frame connection castings includes:
a dump body pivot pin boss, wherein the dump pivot pin boss has a pivot pin bore, a pin bore center axis, a pin bore vertical centerline perpendicular to the pin bore center axis, an inner flat surface perpendicular to the pin bore center axis, and an outer flat surface perpendicular to the pin bore center axis,
a rear suspension connection boss, wherein the rear suspension connection boss includes a suspension connection center axis, an inner flat surface perpendicular to the suspension connection center axis, and an outer flat surface perpendicular to the suspension connection center axis,
an outer upper rear frame tube connection boss,
an inner upper rear frame tube connection boss,
an outer lower rear frame tube connection boss,
an inner lower rear frame tube connection boss,
an upper beam having an outer upper beam member connecting the outer upper rear frame tube connection boss to the dump body pivot pin boss, and an inner upper beam member connecting the inner upper rear frame tube connection boss to the dump body pivot pin boss, wherein the outer upper beam member and inner upper beam member are joined at the dump body pivot pin boss and are orientated at a first acute angle with respect to each other,
a lower beam having an outer lower beam member connecting the outer lower rear frame connection boss to the rear suspension connection boss and the dump body pivot pin boss, and an inner lower beam member connecting the inner lower rear frame tube connection boss to the dump body pivot pin boss, wherein the outer lower beam member and inner lower beam member are joined at the dump body pivot pin boss and are orientated at a second acute angle with respect to each other,
a beam connection web connecting the upper beam to the lower beam, wherein the beam connection web includes a curved surface blending the upper and lower beams, and wherein the upper and lower beams are oriented at a third acute angle with respect to each other, and
a support tube connection boss having a center axis, wherein the center axis of the support tube connection boss is parallel to the pin bore center axis of the dump body pivot pin boss and the suspension connection center axis of the rear suspension connection boss.

2. The space frame dump body pivot pin, suspension node, and rear frame connection system according to claim 1 , wherein the first, second, and third acute angles are different.

3. The space frame dump body pivot pin, suspension node, and rear frame connection system according to claim 1 , wherein the tube connection bosses are adapted to have fixedly attached thereto respective frame tubes or suspension linkages.

4. The space frame dump body pivot pin, suspension node, and rear frame connection system according to claim 1 , wherein the dump body pivot pin boss is a solid cylinder except for the pivot pin bore.

5. The space frame dump body pivot pin, suspension node, and rear frame connection system according to claim 1 , wherein the rear suspension connection boss is below the dump body pivot pin boss such that a portion of the dump body pivot pin boss overlaps a portion of the rear suspension connection boss in a top plan view and a side elevational view of the space frame dump body pivot pin, suspension node, and rear frame connection system.

6. The space frame dump body pivot pin, suspension node, and rear frame connection system according to claim 1 , wherein the upper beam is longer than the lower beam.

7. The space frame dump body pivot pin, suspension node, and rear frame connection system according to claim 1 , wherein the support tube connection boss is offset in a forward direction from the rear suspension connection boss and the dump body pivot pin boss such that no portion of the support tube connection boss overlaps any portion of the rear suspension connection boss and the dump body pivot pin boss in a top plan view and a side elevational view of the space frame dump body pivot pin, suspension node, and rear frame connection system.

8. The space frame dump body pivot pin, suspension node, and rear frame connection system according to claim 1 , wherein each of the tube connection bosses except the support tube connection bosses tapers from thick to thin toward the dump body pivot pin boss.

9. A dump body pivot pin, suspension node, and rear frame connection casting comprising:
a dump body pivot pin boss, wherein the dump pivot pin boss has a pivot pin bore, a pin bore center axis, an inner flat surface perpendicular to the pin bore center axis, and an outer flat surface perpendicular to the pin bore center axis;
a rear suspension connection boss, wherein the rear suspension connection boss includes a suspension connection center axis, an inner flat surface perpendicular to the suspension connection center axis, and an outer flat surface perpendicular to the suspension connection center axis;
an outer upper rear frame tube connection boss;
an inner upper rear frame tube connection boss;
an outer lower rear frame tube connection boss;
an inner lower rear frame tube connection boss;
an upper beam having an outer upper beam member connecting the outer upper rear frame tube connection boss to the dump body pivot pin boss, and an inner upper beam member connecting the inner upper rear frame tube connection boss to the dump body pivot pin boss, wherein the outer upper beam member and inner upper beam member are joined at the dump body pivot pin boss and are orientated at a first acute angle with respect to each other;
a lower beam having an outer lower beam member connecting the outer lower rear frame connection boss to the rear suspension connection boss and the dump body pivot pin boss, and an inner lower beam member connecting the inner lower rear frame tube connection boss to the dump body pivot pin boss, wherein the outer lower beam member and inner lower beam member are joined at the dump body pivot pin boss and are orientated at a second acute angle with respect to each other;
a beam connection web connecting the upper beam to the lower beam, wherein the upper and lower beams are oriented at a third acute angle with respect to each other; and
a support tube connection boss having a center axis, wherein the center axis of the support tube connection boss is parallel to the pin bore center axis of the dump body pivot pin boss and the suspension connection center axis of the rear suspension connection boss.

10. The dump body pivot pin, suspension node, and rear frame connection casting according to claim 9 , wherein respective casting interfaces are provided between the upper beam and the outer and inner upper rear frame tube connection bosses and between the lower beam and the outer and inner lower rear frame tube connection bosses.

11. The dump body pivot pin, suspension node, and rear frame connection casting according to claim 9 , wherein the first, second, and third acute angles are different.

12. The dump body pivot pin, suspension node, and rear frame connection casting according to claim 9 , wherein the tube connection bo

Assignees

• Caterpillar Inc

Inventors

• Miller Tad W
• Holthaus David W
• Harman Timothy D
• Dantuluri Venkara R

Classifications

• B62D27/023

  Assembly of structural joints · CPC title

• B62D21/186

  for building site vehicles or multi-purpose tractors (tracked vehicles B62D55/10; tractors in general B62D49/00; building site vehicles in general E02F; lift-trucks B66F) · CPC title

• B62D21/11

  with resilient means for suspension {, e.g. of wheels or engine; sub-frames for mounting engine or suspensions} · CPC title

• B62D21/08 Primary

  built up with interlaced cross members · CPC title

• B60P1/483

  using pivoted arms shifting the load-transporting element in a fore or aft direction · CPC title