Folding handrail for work vehicle

• US 10,293,755 B2
• Filed: 03/21/2017
• Issued: 05/21/2019
• Est. Priority Date: 04/28/2016
• Status: Active Grant

• Current Assignee: Deere & Company
• Original Assignee: Deere & Company
• Inventors: Brett, William A., Thelen, Kevin A.
• Primary Examiner(s): Chavchavadze, Colleen M
• Application Number:
  US15/465,164
• Publication Number:
  US 20170313255A1
• Time in Patent Office: 791 Days
• CPC Class Codes: B60P 3/2205 Constructional features
• CPC Class Codes: B60R 3/005 Catwalks, running boards for vehicle tops, access means for vehicle tops; Handrails therefor
• CPC Class Codes: E04G 21/3228 Folding railings for flat roof edge, e.g. to hide the railings from view when not in use
• CPC Class Codes: E04G 5/14 Railings

Abstract

A handrail system for a work vehicle has a handrail including a first rail member configured to extend in first direction and a second rail member coupled to the first rail member and configured to extend in a second direction substantially perpendicular to the first direction. The handrail system also has a fold structure configured to couple the handrail to the work vehicle and move the handrail between an upright position and a folded position with respect to the work vehicle. When in the folded position, the handrail has a support surface that is elevated along a central area of the handrail higher than at least one side of the handrail.

Claims

1. A handrail system for a work vehicle, comprising:

a handrail including a first rail member configured to extend in a first direction and a second rail member coupled to the first rail member and configured to extend in a second direction substantially perpendicular to the first direction; and

a fold structure configured to couple the handrail to the work vehicle and move the handrail between an upright position and a folded position with respect to the work vehicle;

wherein, when in the folded position, the handrail has a support surface that is elevated along a central area of the handrail higher than at least one side of the handrail;

wherein the support surface is an edge of a planer wall, the planer wall mounted to at least one of the first and second rail members and extending in the second direction and in a third direction at an angle to the first and second directions.

2. The handrail system of claim 1, wherein, when the fold structure is configured to be coupled to the work vehicle, such that the first rail member extends in the first direction substantially in line with a direction of travel of the work vehicle, and the second direction in which the second rail member extends, when in the folded positioned, extends substantially between lateral sides of the work vehicle;

and

wherein the central area of the handrail is laterally between the lateral sides of the work vehicle.

3. The handrail system of claim 1, wherein the planner wall is a divider.

4. The handrail system of claim 3, wherein the edge of the divider is one of inclined and curved in the second direction such that, when in the folded position, the support surface has a decreasing height in the second direction.

5. The handrail system of claim 3, wherein there are a plurality of first rail members spaced apart in the second direction and a plurality of second rail members spaced apart in the first direction;

and

wherein there are a plurality of dividers, at least one of which is arranged between consecutive second rail members with respect to the first direction.

6. The handrail system of claim 1, further comprising an attachment device coupled to at least one of the first and second rail members and configured to removably couple at least one of a tool and a grate to the handrail.

7. The handrail system of claim 1, wherein the fold structure includes an actuator having a first end pivotally coupled to at least one of the first and second rail members and a second end configured to pivotally couple to the work vehicle;

and

wherein the actuator is at least one of an electronic actuator and an extendable and retractable hydraulic cylinder.

8. The handrail of claim 1, wherein the fold structure includes a detent in communication with a biasing device configured to releasably bias the handrail in the upright position when connected to the work vehicle.

9. A work vehicle, comprising:

a vehicle frame;

a platform mounted at a top side of the vehicle frame; and

a handrail system positioned near the platform and including;

a handrail including a first rail member extending in a first direction and a second rail member coupled to the first rail member and extending in a second direction substantially perpendicular to the first direction; and

a fold structure configured to move the handrail between an upright position and a folded position with respect to the work vehicle;

wherein, when in the folded position, the handrail has a support surface that is elevated along a central area of the handrail higher than at least one side of the handrail;

wherein the support surface is an edge of a planer wall, the planer wall mounted to at least one of the first and second rail members and extending in the second direction and in a third direction at an angle to the first and second directions.

10. The work vehicle of claim 9, wherein the first rail member extends in the first direction substantially in line with a direction of travel of the work vehicle, and the second direction in which the second rail member extends, when in the folded positioned, extends substantially between lateral sides of the work vehicle;

and

wherein the central area of the handrail is laterally between the lateral sides of the work vehicle and the fold structure moves the handrail perpendicular to the direction of travel.

11. The work vehicle of claim 10, wherein the work vehicle includes a material application system including a tank;

and

wherein the handrail is positioned substantially along the center of the tank.

12. The work vehicle of claim 11, wherein the platform is a grate for covering an opening of the tank.

13. The work vehicle of claim 10, wherein the fold structure includes an actuator having a first end pivotally coupled to at least one of the first and second rail members and a second end pivotally coupled to the work vehicle;

and

wherein the actuator is at least one of an electronic actuator and an extendable and retractable hydraulic cylinder.

14. The work vehicle of claim 10, wherein the fold structure includes a detent in communication with a biasing device configured to releasably bias the handrail in the upright position with respect to the work vehicle.

15. The handrail system of claim 10, wherein the planner wall is a divider.

16. The work vehicle of claim 15, wherein the edge of the divider is one of inclined and curved in the second direction such that, when in the folded position, the support surface has a decreasing height in the second direction.

17. The work vehicle of claim 15, wherein the divider has a first divider portion and a second divider portion;

wherein the first divider portion is fixed with respect to the work vehicle and the second divider portion is mounted to at least one of the first and second rail members and is movable with the handrail with respect to the work vehicle.

18. The work vehicle of claim 17, wherein there are a plurality of first rail members spaced apart in the second direction and a plurality of second rail members spaced apart in the first direction;

and

wherein there are a plurality of dividers, at least one of which is arranged between consecutive second rail members with respect to the first direction and extends between lateral sides of the work vehicle.