Work vehicle

Patent metadata

Field	Value
Publication number	US-9932070-B2
Application number	US-201615006716-A
Country	US
Kind code	B2
Filing date	Jan 26, 2016
Priority date	Jan 26, 2016
Publication date	Apr 3, 2018
Grant date	Apr 3, 2018

Abstract

A work vehicle includes a pair of left and right steerable wheels, a pair of left and right drivable wheels, and a boss portion that supports the steerable wheel pivotally about a steering axis via a king pin. The boss portion is closer to a width center of the steerable wheel than a vehicle body inner lateral side end of the steerable wheel.

First claim

The invention claimed is:

1. A work vehicle comprising:
a pair of left and right steerable wheels;
a pair of left and right drivable wheels; and
a boss portion that supports a respective steerable wheel of the pair of left and right steerable wheels pivotally about a steering axis via a king pin, the boss portion being closer to a width center of the respective steerable wheel than a vehicle body inner lateral side end of the respective steerable wheel,
wherein the king pin has an approximately L-shape extending between the respective steerable wheel and the boss portion.

2. The work vehicle according to claim 1 , wherein the respective steerable wheel is set with a caster angle that inclines the steering axis rearwards as seen in a side view.

3. The work vehicle according to claim 1 , wherein the respective steerable wheel is set also with a king pin angle that inclines the steering axis towards a vehicle body laterally inner side as seen in the side view.

4. The work vehicle according to claim 1 , further comprising:
an operating member for steering the steerable wheels; and
a link member that operably links the operating member with the steerable wheels, and
wherein the king pin includes an arm member to which the link member is connected.

5. The work vehicle according to claim 4 , further comprising:
an axle frame that supports the pair of left and right steerable wheels; and
a mount bracket to which the axle frame is attached; and
wherein the mount bracket includes a recess for avoiding interference with the link member.

6. The work vehicle according to claim 1 , wherein the work vehicle comprises a mid-mount type grass mower.

Assignees

• Kubota Kk

Inventors

• Walden Robert

Classifications

• A01D34/64

  mounted on a vehicle, e.g. a tractor, or drawn by an animal or a vehicle (A01D34/695 takes precedence) · CPC title

• B62D7/16

  Arrangement of linkage connections (pivots per se F16C) · CPC title

• B62D7/18 Primary

  Steering knuckles; King pins · CPC title