An agricultural sprayer implement which includes a wheeled main body and a cantilevered boom. The cantilevered boom has a plurality of sections which fold with respect to one another and place significant torsional stress on one or more of the boom sections. The interior boom sections have a cylindr
An agricultural sprayer implement which includes a wheeled main body and a cantilevered boom. The cantilevered boom has a plurality of sections which fold with respect to one another and place significant torsional stress on one or more of the boom sections. The interior boom sections have a cylindrical tube as a lower member and preferably a square tube as an upper member with a plurality of braces extending between them. The cylindrical tube resists the torsional stress which is maximized during folding of the boom. The square tube resists particularly an upward/downward bending moment.
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The invention claimed is: 1. An agricultural sprayer implement comprising: a wheeled main body; a cantilevered boom extending from the wheeled main body to a cantilevered end, the cantilevered boom including a torsion resistant section extending between a proximal end and a distal end, a hinge incl
The invention claimed is: 1. An agricultural sprayer implement comprising: a wheeled main body; a cantilevered boom extending from the wheeled main body to a cantilevered end, the cantilevered boom including a torsion resistant section extending between a proximal end and a distal end, a hinge including a first wing and a second wing, and an end section extending between a proximal end and the cantilevered end; the second wing of the hinge formed by a leading end brace of the end section adjacent to the proximal end of the end section; the first wing of the hinge formed by a trailing end brace of the torsion resistant section adjacent to the distal end of the torsion resistant section; the torsion resistant section including an upper member and a lower member terminating at the trailing end brace, the torsion resistant section further including a plurality of braces extending between the upper member and the lower member, the upper member positioned increasingly nearer to the lower member as the torsion resistant section extends from the proximal end to the distal end of the torsion resistant section, the lower member of the torsion resistant section including a non-dispensing cylindrical tube, the non-dispensing cylindrical tube and the upper member being generally centered along a common vertical plane of the cantilevered boom, and the non-dispensing cylindrical tube having an outside diameter greater than a maximum width of a transverse cross-sectional shape of the upper member; and a dispensing tube carried by the cantilevered boom for dispensing chemicals; wherein the cantilevered boom is moved from an extended orientation to a folded orientation by pivoting the end section relative to the torsion resistant section at the hinge between the torsion resistant section and the end section; wherein a torsional load is applied at the trailing end brace of the torsion resistant section by the end section when the end section is pivoted relative to the torsion resistant section to move the cantilevered boom from the extended orientation to the folded orientation; wherein at least a portion of the torsional load is carried by the non-dispensing cylindrical tube of the torsion resistant section; and wherein the end section does not include the non-dispensing cylindrical tube centered along the common vertical plane of the cantilevered boom. 2. The agricultural sprayer implement of claim 1, wherein the end section has a construction that is less torsion resistant than the torsion resistant section. 3. The agricultural sprayer implement of claim 1, wherein the upper member has a first wall that is parallel to the common vertical plane and a second wall that is orthogonal to the first wall. 4. The agricultural sprayer implement of claim 3, wherein the upper member has a square cross-sectional shape. 5. The agricultural sprayer implement of claim 1, wherein a sole function of the non-dispensing cylindrical tube is to provide structural support to the cantilevered boom and boom attachments. 6. The agricultural sprayer implement of claim 1, wherein the torsion resistant section further includes a first bar and a second bar extending between the proximal and the distal ends of the torsion resistant section, wherein the first bar and the second bar are positioned at a lower extremity of the torsion resistant section on opposite sides of the common vertical plane of the cantilevered boom. 7. The agricultural sprayer implement of claim 6, wherein the plurality of braces extends to the first and the second bars. 8. The agricultural sprayer implement of claim 1, further comprising a hydraulic cylinder adapted to move the cantilevered boom from the extended orientation to the folded orientation. 9. The agricultural sprayer implement of claim 2, further comprising a hydraulic cylinder adapted to move the cantilevered boom from the extended orientation to the folded orientation. 10. The agricultural sprayer implement of claim 3, further comprising a hydraulic cylinder adapted to move the cantilevered boom from the extended orientation to the folded orientation. 11. The agricultural sprayer implement of claim 4, further comprising a hydraulic cylinder adapted to move the cantilevered boom from the extended orientation to the folded orientation. 12. The agricultural sprayer implement of claim 5, further comprising a hydraulic cylinder adapted to move the cantilevered boom from the extended orientation to the folded orientation. 13. The agricultural sprayer implement of claim 1, wherein the plurality of braces that extend between the upper member and the lower member define a first, a second, and a third centerline that define the common vertical plane of the cantilevered boom. 14. The agricultural sprayer implement of claim 1, wherein the plurality of braces are each larger at the bottom and narrower at the top, the bottom matching an upper semi-cylindrical shape of said non-dispensing cylindrical tube and the top matching the upper member. 15. The agricultural sprayer implement of claim 13, wherein the plurality of braces are each larger at the bottom and narrower at the top, the bottom matching an upper semi-cylindrical shape of said non-dispensing cylindrical tube and the top matching the upper member. 16. The agricultural sprayer implement of claim 1, wherein the plurality of braces are attached to the upper member and to the non-dispensing cylindrical tube to capture the resistance to torsional stress of the non-dispensing cylindrical tube while increasing resistance to bending in up/down direction. 17. The agricultural sprayer implement of claim 1, wherein the function of the non-dispensing cylindrical tube consists essentially of providing resistance to torsional load when the end section is pivoted relative to the torsion resistant section to move the cantilevered boom from the extended orientation to the folded orientations. 18. The agricultural sprayer implement of claim 1, wherein the upper member and the plurality of braces provide additional resistance to bending in up/down direction or a forward/reverse direction. 19. The agricultural sprayer implement of claim 1, wherein the upper member, the plurality of braces, the non-dispensing cylindrical tube, the first bar, and the second bar provide a strong three dimensional cantilevered boom. 20. The agricultural sprayer implement of claim 2, wherein the torsion resistant section further includes a first bar and a second bar extending between the proximal and the distal ends of the torsion resistant section, wherein the first bar and the second bar are positioned at a lower extremity of the torsion resistant section on opposite sides of the common vertical plane of the cantilevered boom.
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이 특허에 인용된 특허 (9)
Ross E. Yocom ; Roger E. Yocom, Articulated spray boom apparatus.
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