Suspension and lock-out systems for a partially tracked vehicle

Patent metadata

Field	Value
Publication number	US-10202154-B2
Application number	US-201815890322-A
Country	US
Kind code	B2
Filing date	Feb 6, 2018
Priority date	Sep 13, 2013
Publication date	Feb 12, 2019
Grant date	Feb 12, 2019

Abstract

A partially tracked utility vehicle and conversion are provided. The converted partially tracked utility vehicle has a chassis, front wheels, and a trailing link suspension. The trailing link suspension has a trailing link with a first end pivotably connected to the chassis and a second end pivotably connected to a walking beam at a walking beam pivot; a shock having a first end pivotably connected to a tension shaft and a second end pivotably connected to the trailing link; the walking beam further comprising a plurality of axle mounted bogey wheels for engaging a track of the partially tracked utility vehicle; a sprocket mounted to a traction drive of the utility vehicle for engaging and providing rotational power to the track; and an actuator attached to the chassis, the actuator having a shaft pivotably connected to the tension shaft and configured to rotate the tension shaft.

First claim

What is claimed is:

1. A utility vehicle conversion for providing tracks for a traction drive of a utility vehicle having a chassis comprising:
a trailing link having a first end pivotably connectable to said chassis and a second end pivotably connectable to a walking beam at a walking beam pivot;
a shock having a first end pivotably connectable to a tension shaft and a second end pivotably connectable to said trailing link;
said walking beam further comprising a plurality of axle mounted bogey wheels for engaging a track, said walking beam is connectable to only a single trailing link, said trailing link is connectable to only a single shock; and
a sprocket mountable to the traction drive of said utility vehicle for engaging and providing rotational power to said track.

2. The utility vehicle conversion of claim 1 further comprising an actuator attachable to said chassis, said actuator having a shaft pivotably connected to said tension shaft and configured to rotate said tension shaft.

3. The utility vehicle conversion of claim 2 , wherein said utility vehicle further comprises front wheels having a steerable axle.

4. The utility vehicle conversion of claim 3 , wherein said traction drive of said track is synchronizable with said steerable axle to emulate Ackerman Steering geometry.

5. The utility vehicle conversion of claim 1 , wherein the rotation of said tension shaft increases or decreases the tension of said tracks.

6. The utility vehicle conversion of claim 1 , wherein the rotation of said tension shaft increases or decreases the height of said utility vehicle.

7. The utility vehicle conversion of claim 1 , wherein said shock is configured to act as a lock-out member.

8. The utility vehicle conversion of claim 1 , wherein said walking beam pivot of said walking beam is biased toward a front or a rear of said utility vehicle.

9. The utility vehicle conversion of claim 1 , wherein said shock is comprised of at least one of coil, leaf or torsion springs; wherein said shock is mechanical, hydraulic, and/or pneumatic.

10. The utility vehicle conversion of claim 1 , said utility vehicle conversion further comprising an attachment boom assembly having an boom and an attachment interface, said attachment boom assembly being pivotably attachable to said chassis.

11. The attachment boom assembly of claim 10 wherein said boom has a first end and a second end, said boom first end is pivotably attachable to said chassis and said boom second end is pivotably attachable to an attachment interface pivotably attached.

12. The attachment boom assembly of claim 10 , further comprising at least one of a lift cylinder or a pitch cylinder; said lift cylinder being pivotably mountable between said chassis and said boom, said pitch cylinder being pivotably mountable between said boom and said attachment interface.

13. The utility vehicle conversion of claim 1 , wherein said utility vehicle is a utility machine, a zero turn mower, or a zero turn tractor.

14. The utility vehicle conversion of claim 1 , wherein said track has a front and a rear, wherein said walking beam is located at said front of said track and said sprocket is located at said rear of said track.

15. The utility vehicle conversion of claim 1 , wherein said second end of said shock is pivotably connectable to said trailing link in an area located between a middle of said trailing link and said second end of said trailing link.

16. The utility vehicle conversion of claim 1 , wherein said first end of said trailing link is directly pivotably connectable to said chassis and said second end of said trailing link is directly pivotably connectable to said walking beam.

Assignees

• Mtd Products Inc

Inventors

• Eavenson Sr Jimmy N
• Buchanan Peter Joseph

Classifications

• B62D55/02 Primary

  with tracks and additional ground wheels {(for multi-purpose tractors B62D49/0635)} · CPC title

• B62D55/04

  with tracks and alternative ground wheels, e.g. changeable from endless track vehicle into wheeled vehicle and vice versa {(for multi-purpose tractors B62D49/0635)} · CPC title

• B62D55/108

  with mechanical springs, e.g. torsion bars · CPC title