EP-4737151-A1 - WORK VEHICLE

EP4737151A1EP 4737151 A1EP4737151 A1EP 4737151A1EP-4737151-A1

Abstract

The present disclosure relates to a work vehicle. A work vehicle according to the present disclosure includes: an electric motor including an annular flange on a side surface on a first side in an axial direction; a vehicle body including an annular plate to which the electric motor is fixed; and an extension member that connects the flange and the plate, the extension member includes: a cylindrical boss portion; and a flange portion extending radially outward from an axial end of the boss portion, the plate is disposed on a first side of the flange in the axial direction, the boss portion is fixed to the flange by a first bolt inserted into a through hole formed in the plate from a first side in the axial direction and fastened to the flange from the first side in the axial direction, and the flange portion is fixed to the plate by a second bolt disposed on the first side of the plate in the axial direction and fastened to the plate from the first side in the axial direction.

Inventors

MINAMIDE, YUKI
OHNISHI, Teppei

Assignees

Kubota Corporation

Dates

Publication Date: 20260506
Application Date: 20240501

Claims (5)

A work vehicle comprising: an electric motor including an annular flange on a side surface on a first side in an axial direction; and a vehicle body including an annular plate to which the electric motor is fixed, wherein the work vehicle further comprises an extension member that connects the flange and the plate, the extension member includes: a cylindrical boss portion; and a flange portion extending radially outward from an axial end of the boss portion, the plate is disposed on a first side of the flange in the axial direction, the boss portion is fixed to the flange by a first bolt inserted into a through hole formed in the plate from a first side in the axial direction and fastened to the flange from the first side in the axial direction, and the flange portion is fixed to the plate by a second bolt disposed on the first side of the plate in the axial direction and fastened to the plate from the first side in the axial direction.
The work vehicle according to claim 1, wherein the flange includes an annular protruding portion protruding from a radially inner side to a first side in the axial direction, and the boss portion is fixed to the protruding portion inserted into the through hole from a second side in the axial direction.
The work vehicle according to claim 1 or 2, wherein the extension member includes: a first bolt hole through which the first bolt is inserted; and a second bolt hole through which the second bolt is inserted, and the first bolt hole is formed at a position radially inner than the second bolt hole.
The work vehicle according to claim 1 or 2, wherein in the extension member, an outer diameter of the flange portion is larger than an outer diameter of the flange.
The work vehicle according to claim 1 or 2, further comprising: a fuel cell module installed on the vehicle body; and a hydrogen pipe and a hydrogen tank that supply hydrogen to the fuel cell module.

Description

TECHNICAL FIELD The present disclosure relates to a work vehicle. BACKGROUND ART Conventionally, a work vehicle including an electric motor and a battery is known (see Patent Literature 1). In a work vehicle disclosed in Patent Literature 1, a battery is disposed inside a hood. The work vehicle disclosed in Patent Literature 1 is a tractor. CITATION LIST [PATENT LITERATURE] PATENT LITERATURE 1: Japanese Laid-Open Patent Publication No. 2022-060655 SUMMARY OF THE INVENTION A work vehicle according to an aspect of the present disclosure includes: an electric motor including an annular flange on a side surface on a first side in an axial direction; and a vehicle body including an annular plate to which the electric motor is fixed, the work vehicle further includes an extension member that connects the flange and the plate, the extension member includes: a cylindrical boss portion; and a flange portion extending radially outward from an axial end of the boss portion, the plate is disposed on a first side of the flange in the axial direction, the boss portion is fixed to the flange by a first bolt inserted into a through hole formed in the plate from a first side in the axial direction and fastened to the flange from the first side in the axial direction, and the flange portion is fixed to the plate by a second bolt disposed on the first side of the plate in the axial direction and fastened to the plate from the first side in the axial direction. The present disclosure can suppress distortion generated in an electric motor when the electric motor is fixed to a chassis in a work vehicle including the electric motor. BRIEF DESCRIPTION OF DRAWINGS [FIG. 1] FIG. 1 is a perspective view illustrating an embodiment of a work vehicle of the present disclosure.[FIG. 2] FIG. 2 is a front view illustrating the embodiment of the work vehicle of the present disclosure.[FIG. 3] FIG. 3 is a rear view illustrating the embodiment of the work vehicle of the present disclosure.[FIG. 4] FIG. 4 is a right side view illustrating the embodiment of the work vehicle of the present disclosure.[FIG. 5] FIG. 5 is a left side view illustrating the embodiment of the work vehicle of the present disclosure.[FIG. 6] FIG. 6 is a plan view illustrating the embodiment of the work vehicle of the present disclosure.[FIG. 7] FIG. 7 is a bottom view illustrating the embodiment of the work vehicle of the present disclosure.[FIG. 8] FIG. 8 is an exploded perspective view of a part of the work vehicle of the present disclosure.[FIG. 9] FIG. 9 is a left side view of the work vehicle in a state in which some parts are removed.[FIG. 10] FIG. 10 is a perspective view illustrating an installed state of a motor in a chassis.[FIG. 11] FIG. 11 is an overall perspective view illustrating a state in which the motor is fixed to a plate.[FIG. 12] FIG. 12 is an exploded perspective view illustrating a state in which the motor is fixed to the plate.[FIG. 13] FIG. 13 is a cross-sectional view illustrating a state in which the motor is fixed to the plate.[FIG. 14] FIG. 14 is a perspective view illustrating an extension member as viewed from a boss portion side. DETAILED DESCRIPTION <Problems to be Solved by the Invention> In recent years, a work vehicle that generates power using hydrogen as a fuel using a fuel cell module and drives an electric motor with the electric power to travel has been studied. In such a work vehicle, an electric motor installed on a vehicle body is fixed to a chassis included in the vehicle body. However, when the flatness of the mounting surface of the electric motor in the chassis is insufficient, distortion may be generated in the electric motor fixed to the mounting surface. An object of the present disclosure is to suppress distortion generated in an electric motor fixed to a chassis in a work vehicle including the electric motor. <Effects of the Invention> According to the work vehicle of the present disclosure, in the work vehicle including the electric motor, it is possible to suppress distortion generated in the electric motor when the electric motor is fixed to the chassis. <Outline of Embodiment of Present Disclosure> Hereinafter, an outline of an embodiment of the present disclosure will be listed and described. (1) A work vehicle according to the present embodiment includes: an electric motor including an annular flange on a side surface on a first side in an axial direction; and a vehicle body including an annular plate to which the electric motor is fixed, and the work vehicle further includes an extension member that connects the flange and the plate. The extension member includes a cylindrical boss portion and a flange portion extending radially outward from an axial end of the boss portion. The plate is disposed on a first side of the flange in the axial direction. The boss portion is fixed to the flange by a first bolt inserted into a through hole formed in the plate from a first side in the axial direction and fastened to th