Working vehicle

Patent metadata

Field	Value
Publication number	US-12337780-B2
Application number	US-202418648860-A
Country	US
Kind code	B2
Filing date	Apr 29, 2024
Priority date	Nov 2, 2021
Publication date	Jun 24, 2025
Grant date	Jun 24, 2025

Abstract

A work vehicle includes a vehicle body, an engine mounted on the vehicle body, a hood covering the engine, a driver's seat on one side with respect to the hood in a front-rear direction of the vehicle body, a step extending under the driver's seat and having a width wider than a lateral width of the hood in a left-right direction of the vehicle body, and a ROPS including left and right columns respectively located on two lateral sides of the vehicle body between a front end of the hood and a front end of the driver's seat, the left and right columns including upper end portions coupled to each other. Each of the columns is located within a range extending from a laterally outermost end of the hood and to a laterally outermost end of the step in the left-right direction of the vehicle body.

First claim

What is claimed is:

1. A work vehicle comprising:
a vehicle body including a body frame;
an engine mounted on the vehicle body;
a hood covering the engine;
a driver's seat on a rear side with respect to the hood;
a step extending under the driver's seat and having a width wider than a lateral width of the hood in a left-right direction of the vehicle body; and
a roll-over protective structure including left and right columns respectively located on two lateral sides of the vehicle body between a front end of the hood and a front end of the driver's seat, the left and right columns including upper end portions coupled to each other; and
left and right lower supports respectively supporting lower end portions of the left and right columns; wherein
each of the columns is located within an area between a laterally outermost end of the hood and a laterally outermost end of the step as viewed in a front-rear direction of the vehicle body; and
each of the left and right lower supports is supported by the body frame.

2. The work vehicle according to claim 1 ,
wherein
the left and right lower supports extend from the lower end portions of the columns toward a vehicle body center in the left-right direction of the vehicle body.

3. The work vehicle according to claim 2 , wherein laterally outer end portions of the left and right lower supports are coupled to the lower end portions of the columns from laterally inner sides.

4. The work vehicle according to claim 3 , wherein
the columns include hollow structures; and
the lower end portions of the columns are open downward.

5. The work vehicle according to claim 2 , further comprising:
left and right brackets respectively coupled to laterally inner end portions of the left and right lower supports; wherein
each of the left and right brackets is fixed to the vehicle body with a plurality of fasteners at a plurality of positions in the front-rear direction of the vehicle body; and
each of the left and right lower supports has a center deviated to one side with respect to a fixing center in the front-rear direction of the vehicle body, the fixing center being a center between a front fastener and a rear fastener of the plurality of fasteners.

6. The work vehicle according to claim 5 , further comprising:
a first fastener and a second fastener included in the plurality of fasteners, the first fastener being located above the left and right lower supports, the second fastener being located below the left and right lower supports;
a first reinforcement coupled to one of the left and right lower supports and one of the left and right brackets and extending from the one of the left and right lower supports toward a side in an up-down direction on which side the first fastener is located; and
a second reinforcement coupled to the one of the left and right lower supports and the one of the left and right brackets and extending from the one of the left and right lower supports toward a side in the up-down direction on which side the second fastener is located.

7. The work vehicle according to claim 6 , further comprising:
a third reinforcement located on one side with respect to the one of the left and right lower supports in the front-rear direction of the vehicle body and coupled to the one of the left and right lower supports and the one of the left and right brackets;
a third fastener included in the plurality of fasteners and located on a side opposite to the one of the left and right lower supports with respect to the third reinforcement in the front-rear direction of the vehicle body; and
a fourth reinforcement extending from the third reinforcement toward the third fastener in the front-rear direction of the vehicle body and coupled to the one of the left and right brackets and the third reinforcement.

8. The work vehicle according to claim 7 , further comprising:
a fourth fastener of the plurality of fasteners located on a side of the one of the left and right lower supports with respect to the third reinforcement in the front-rear direction of the vehicle body; wherein
the third reinforcement is between the third fastener and the fourth fastener in the front-rear direction of the vehicle body.

9. A work vehicle comprising:
a vehicle body;
an engine mounted on the vehicle body;
a hood covering the engine;
a driver's seat on a rear side with respect to the hood;
a step extending under the driver's seat and having a width wider than a lateral width of the hood in a left-right direction of the vehicle body:
a roll-over protective structure including left and right columns respectively located on two lateral sides of the vehicle body between a front end of the hood and a front end of the driver's seat, the left and right columns including upper end portions coupled to each other;
left and right lower supports respectively supporting lower end portions of the left and right columns;
left and right brackets respectively coupled to laterally inner end portions of the left and right lower supports; and
a device for the engine on one side with respect to the left and right lower supports in the front-rear direction of the vehicle body; wherein
each of the columns is located within an area between a laterally outermost end of the hood and a laterally outermost end of the step as viewed in the front-rear direction of the vehicle body;
the left and right lower supports extend from the lower end portions of the columns toward a vehicle body center in the left-right direction of the vehicle body:
each of the left and right brackets is fixed to the vehicle body with a plurality of fasteners at a plurality of positions in the front-rear direction of the vehicle body;
each of the left and right lower supports has a center deviated to one side with respect to a fixing center in the front-rear direction of the vehicle body, the fixing center being a center between a front fastener and a rear fastener of the plurality of fasteners; and
the center of the left and right lower supports is deviated to a side opposite to the device with respect to the fixing center in the front-rear direction of the vehicle body.

Assignees

• Kubota Kk

Inventors

• Tanaka Ryosuke

Classifications

• B62D25/10

  Bonnets or lids {, e.g. for trucks, tractors, busses, work vehicles (for truck beds B60J7/1607; for boats B63B19/12; doors arranged at the vehicle rear B60J5/10; inlet covers for vehicle fuel tanks B60K15/05; for protecting non-occupants of a vehicle B60R21/38)} · CPC title

• B60R21/131 Primary

  Protective devices for drivers in case of overturning of tractors (means for preventing overturning or tipping of tractors B62D49/08) · CPC title

• B60R21/13 Primary

  Roll-over protection (electrical circuits for triggering safety arrangements B60R21/01) · CPC title