US 12,428,802 B2
Work vehicle
Satoshi Takaki, Sakai (JP); and Takahiro Usami, Sakai (JP)
Assigned to KUBOTA CORPORATION, Osaka (JP)
Filed by Kubota Corporation, Osaka (JP)
Filed on Nov. 28, 2022, as Appl. No. 17/994,389.
Claims priority of application No. 2022-011088 (JP), filed on Jan. 27, 2022.
Prior Publication US 2023/0235527 A1, Jul. 27, 2023
Int. Cl. E02F 3/42 (2006.01); E02F 9/08 (2006.01); E02F 3/34 (2006.01)
CPC E02F 3/422 (2013.01) [E02F 3/427 (2013.01); E02F 9/085 (2013.01); E02F 3/3414 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A work vehicle comprising:
a vehicle body frame having a front-back direction, a lateral direction perpendicular to the front-back direction, and a height direction perpendicular to the front-back direction and the lateral direction;
an arm assembly attached to the vehicle body frame to be rotatable about a first rotational axis extending in the lateral direction;
an arm cylinder attached to the vehicle body frame to be rotatable around a second rotational axis substantially parallel to the first rotational axis to control raising and lowering of the arm assembly in the height direction;
a front plate attached to the vehicle body frame in front of the arm cylinder in the front-back direction;
a back plate attached to the vehicle body frame in back of the arm cylinder in the front-back direction;
a side plate attached to the front plate and the back plate opposite to the vehicle body frame with respect to the arm cylinder in the lateral direction;
a bottom plate attached to the vehicle body frame and the side plate below the arm cylinder in the height direction;
the vehicle body frame, the front plate, the back plate and the side plate surrounding the arm cylinder;
the front plate extending in a reference direction in which the arm cylinder is directed when a work equipment attached to the arm assembly is grounded;
the bottom plate including a downward extending portion extending in the reference direction below the second rotational axis in the height direction; and
the downward extending portion, the front plate, the side plate, and the vehicle body frame defining an opening below the arm cylinder.