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EP-4737170-A1 - WORK VEHICLE

EP4737170A1EP 4737170 A1EP4737170 A1EP 4737170A1EP-4737170-A1

Abstract

A work vehicle 10 includes: a vehicle body 11; a fuel cell 24; a tank 13 configured to store hydrogen gas to be supplied to the fuel cell 24; and an installation frame 17 with which the tank 13 is installed on the vehicle body 11, the vehicle body 11 includes a support portion located on opposite sides in a vehicle-width direction, and the installation frame 17 includes: an upper frame portion 171 supporting the tank 13; and a frame portion extending upward from the support portion and supporting the upper frame portion 171 on the opposite sides in the vehicle-width direction.

Inventors

  • TAKAKI, GO
  • HORIIKE, Kohei

Assignees

  • Kubota Corporation

Dates

Publication Date
20260506
Application Date
20240514

Claims (20)

  1. A work vehicle comprising: a vehicle body; a fuel cell; a tank configured to store hydrogen gas to be supplied to the fuel cell; and an installation frame with which the tank is installed on the vehicle body, wherein the vehicle body includes a support portion located on opposite sides in a vehicle-width direction, and the installation frame includes: an upper frame portion supporting the tank; and a frame portion extending upward from the support portion and supporting the upper frame portion on the opposite sides in the vehicle-width direction.
  2. The work vehicle according to claim 1, wherein the support portion includes: a front support portion located on the opposite sides in the vehicle-width direction; and a rear support portion located on the opposite sides in the vehicle-width direction.
  3. The work vehicle according to claim 2, wherein the installation frame includes, as the frame portion supporting the upper frame portion on the opposite sides in the vehicle-width direction: a front frame portion extending upward from the front support portion and supporting a front portion of the upper frame portion on the opposite sides in the vehicle-width direction; and a rear frame portion extending upward from the rear support portion and supporting a rear portion of the upper frame portion on the opposite sides in the vehicle-width direction.
  4. The work vehicle according to claim 3, comprising a driver's seat installed on the vehicle body, wherein the upper frame portion is located above the driver's seat, and the front frame portion is located forward of the driver's seat.
  5. The work vehicle according to claim 3 or 4, comprising a driver's seat installed on the vehicle body, wherein the upper frame portion is located above the driver's seat, and the rear frame portion is located rearward of the driver's seat.
  6. The work vehicle according to any one of claims 3 to 5, comprising a traveling device including front wheels and rear wheels, wherein the front frame portion is located between the front wheels and the rear wheels.
  7. The work vehicle according to claim 6, comprising a driver's seat located rearward of the front wheels and installed on the vehicle body, wherein the front frame portion is located between the front wheels and the driver's seat.
  8. The work vehicle according to any one of claims 3 to 7, comprising a traveling device including front wheels and rear wheels, wherein the front frame portion is located within a range in the vehicle-width direction between the front wheels on the opposite sides in the vehicle-width direction.
  9. The work vehicle according to any one of claims 3 to 8, comprising a traveling device including front wheels and rear wheels, wherein the rear frame portion includes a frame member located between the rear wheels on the opposite sides in the vehicle-width direction, and the rear frame portion is located within a range between the rear wheels in a vehicle front-rear direction.
  10. The work vehicle according to any one of claims 1 to 9, comprising: a driver's seat installed on the vehicle body; a cabin within which the driver's seat is located; and a tank case accommodating the tank, wherein the upper frame portion is located above the cabin, and a front end of the tank case is located forward of the cabin.
  11. The work vehicle according to any one of claims 3 to 9, comprising a hydrogen pipe connected to the tank, wherein the hydrogen pipe is disposed along at least one of the front frame portion and the rear frame portion.
  12. The work vehicle according to any one of claims 3 to 9, comprising: a driver's seat installed on the vehicle body; and a cabin within which the driver's seat is located, wherein the upper frame portion is located above the cabin, and the cabin includes a rear window openable rearward, and the rear frame portion includes a pair of frame members located on opposite ends of the rear window in the vehicle-width direction, the rear window being in an open state.
  13. The work vehicle according to any one of claims 3 to 9, comprising: a driver's seat installed on the vehicle body; and a cabin within which the driver's seat is located, wherein the upper frame portion is located above the cabin, and the cabin includes a pair of front pillars on the opposite sides in the vehicle-width direction, and a pair of rear pillars on the opposite sides in the vehicle-width direction, the front frame portion is provided separately from the front pillars, and the rear frame portion is provided separately from the rear pillars.
  14. The work vehicle according to claim 13, wherein the front frame portion is located forward of the front pillars, and the rear frame portion is located rearward of the rear pillars.
  15. The work vehicle according to any one of claims 3 to 9, wherein the rear frame portion includes: a pair of first frame members respectively extending upward from opposite ends of the rear support portion in the vehicle-width direction; a beam member connecting to the pair of first frame members in the vehicle-width direction; and a pair of second frame members extending upward from opposite ends of the beam member in the vehicle-width direction, and coupled to the upper frame portion.
  16. The work vehicle according to claim 15, wherein the first frame member extends upward and rearward from the rear support portion, and the second frame member extends upward and forward from the beam member.
  17. The work vehicle according to any one of claims 3 to 9, wherein the installation frame includes an inclined frame portion extending rearward and upward from a portion of the front frame portion and coupled to a portion of the upper frame portion.
  18. The work vehicle according to any one of claims 3 to 9, wherein the vehicle body includes a second front support portion located forward of the front support portion and on the opposite sides in the vehicle-width direction, and the installation frame includes a second front frame portion extending upward and rearward from the second front support portion and coupled to the upper frame portion or the front frame portion.
  19. The work vehicle according to any one of claims 2 to 18, wherein the vehicle body includes a chassis, the front support portion is fixed to a part of the chassis, and the rear support portion is fixed to another part of the chassis.
  20. The work vehicle according to any one of claims 3 to 9, wherein the front frame portion has a linear shape from the front support portion toward the upper frame portion.

Description

TECHNICAL FIELD The present invention relates to a work vehicle. The present application claims priority to Japanese Patent Application No. 2023-107656 filed on June 30, 2023, the entire disclosure of which is hereby incorporated by reference. BACKGROUND ART Patent Literature 1 discloses a work vehicle including a tank configured to store hydrogen gas, a fuel cell, and a motor. The fuel cell generates electric power from the hydrogen gas supplied from the tank, and the motor rotates using the electric power. The work vehicle travels using the torque from the motor as a driving force. CITATION LIST [PATENT LITERATURE] PATENT LITERATURE 1: Japanese Laid-Open Patent Publication No. 2023-13186 SUMMARY OF THE INVENTION A work vehicle according to an aspect of the present disclosure includes: a vehicle body; a fuel cell; a tank configured to store hydrogen gas to be supplied to the fuel cell; and an installation frame with which the tank is installed on the vehicle body, the vehicle body includes a support portion located on opposite sides in a vehicle-width direction, and the installation frame includes: an upper frame portion supporting the tank; and a frame portion extending upward from the support portion and supporting the upper frame portion on the opposite sides in the vehicle-width direction. BRIEF DESCRIPTION OF DRAWINGS [FIG. 1] FIG. 1 is a perspective view illustrating a work vehicle according to an embodiment of the present disclosure.[FIG. 2] FIG. 2 is a front view of the work vehicle illustrated in FIG. 1.[FIG. 3] FIG. 3 is a rear view of the work vehicle illustrated in FIG. 1.[FIG. 4] FIG. 4 is a side view of the work vehicle illustrated in FIG. 1.[FIG. 5] FIG. 5 is a side view of the work vehicle illustrated in FIG. 1.[FIG. 6] FIG. 6 is a plan view of the work vehicle illustrated in FIG. 1.[FIG. 7] FIG. 7 is a bottom view of the work vehicle illustrated in FIG. 1.[FIG. 8] FIG. 8 is a partially exploded perspective view of the work vehicle illustrated in FIG. 1.[FIG. 9] FIG. 9 is a side view of the work vehicle from which a hood and the like are removed.[FIG. 10] FIG. 10 is a perspective view of a vehicle body from which a right rear wheel is removed.[FIG. 11] FIG. 11 is a side view of the work vehicle illustrated in FIG. 5, from which a rear wheel and a front frame portion are removed.[FIG. 12] FIG. 12 is an explanatory view of a filling unit attached to a bracket and its surroundings.[FIG. 13] FIG. 13 is an explanatory view of a fuel cell and a discharge path.[FIG. 14] FIG. 14 is a perspective view of a battery unit and a discharge pipe supported by a support structure.[FIG. 15] FIG. 15 is an exploded perspective view of the battery unit, the discharge pipe, and the support structure.[FIG. 16] FIG. 16 is a front view of the battery unit and the discharge pipe supported by the support structure.[FIG. 17] FIG. 17 is a front view illustrating the support structure and the battery unit separated from the support structure. DETAILED DESCRIPTION <Problems to be solved by the present disclosure> According to the work vehicle disclosed in Patent Literature 1, the tank is disposed in an internal space defined in a cabin. In other words, the cabin has a ceiling wall in which a ceiling space is defined between double walls, and the tank is disposed in the ceiling space. As compared with a conventional work vehicle configured to travel using an internal combustion engine, the tank for hydrogen gas changes, for example, a position of the center of gravity of the vehicle to affect traveling performance. The development of a structure for installing the tank on the vehicle body is proceeding. Hence, an object of the present disclosure is to provide a novel structure for installing a tank on a vehicle body. <Advantageous effect of the present disclosure> According to the work vehicle of the present disclosure, a load of a tank located above a vehicle body is supported by a vehicle body via an installation frame, which allows the work vehicle to travel stably. <Outline of embodiments of the present disclosure> An outline of below-listed embodiments of the present disclosure is described. (1) A work vehicle of the present embodiment includes: a vehicle body; a fuel cell; a tank configured to store hydrogen gas to be supplied to the fuel cell; and an installation frame with which the tank is installed on the vehicle body, the vehicle body includes a support portion located on opposite sides in a vehicle-width direction, and the installation frame includes: an upper frame portion supporting the tank; and a frame portion extending upward from the support portion and supporting the upper frame portion on the opposite sides in the vehicle-width direction. According to the work vehicle having this configuration, the upper frame portion supporting the tank is supported, at opposite ends of the upper frame portion in the vehicle-width direction, on the vehicle body with the frame portion. A load of the tank located above