Search

EP-4737169-A1 - WORK VEHICLE

EP4737169A1EP 4737169 A1EP4737169 A1EP 4737169A1EP-4737169-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; a filling port 26 for the hydrogen gas; a pipe 22r connecting the filling port 26 and the tank 13; and a frame coupled to the vehicle body 11. The frame includes an attachment portion 27 to which the filling port 26 is mounted.

Inventors

  • TAKAKI, GO
  • HORIIKE, Kohei

Assignees

  • Kubota Corporation

Dates

Publication Date
20260506
Application Date
20240513

Claims (14)

  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; a filling port for the hydrogen gas; a pipe connecting the filling port and the tank; and a frame coupled to the vehicle body, wherein the frame includes an attachment portion to which the filling port is attached.
  2. The work vehicle according to claim 1, comprising a fuel cell located on a front side of the vehicle body and configured to generate electric power from the hydrogen gas as fuel, wherein the frame is located near a rear of the vehicle body.
  3. The work vehicle according to claim 2, comprising: a driver's seat installed on the vehicle body; and a cabin within which the driver's seat is located, wherein the fuel cell is located forward of the cabin, and the frame including the attachment portion is located rearward of the cabin.
  4. The work vehicle according to claim 2 or 3, comprising a housing accommodating the filling port, wherein the filling port is open rearward or sideward in the vehicle, and the pipe is coupled to the filling port from a front of the housing.
  5. The work vehicle according to any one of claims 1 to 4, comprising: a traveling device including front wheels and rear wheels; a driver's seat installed on the vehicle body; and a cabin within which the driver's seat is located, wherein the filling port is located rearward of the cabin and between the rear wheels on opposite sides in a vehicle-width direction.
  6. The work vehicle according to any one of claims 1 to 5, wherein the frame is a part of an installation frame with which the tank is installed on the vehicle body.
  7. The work vehicle according to any one of claims 1 to 6, comprising a clamp member with which the pipe is fixed to a part of the frame.
  8. The work vehicle according to any one of claims 1 to 7, comprising a coupling device configured to couple a separate instrument to a rear of the vehicle body, wherein the filling port is located above the coupling device when the vehicle body is seen from a rear.
  9. The work vehicle according to any one of claims 1 to 8, comprising: a driver's seat installed on the vehicle body; and a cabin within which the driver's seat is located, wherein the vehicle body includes a coupling bracket to which the cabin is attached, and the frame is coupled to the coupling bracket.
  10. The work vehicle according to any one of claims 2 to 4, wherein the attachment portion is located nearer to one side in a vehicle-width direction.
  11. The work vehicle according to any one of claims 1 to 10, wherein the frame includes a frame member extending upward from the vehicle body.
  12. The work vehicle according to claim 11, wherein the frame includes, as the frame member, a frame member located on a first side of the vehicle body in a vehicle-width direction, and a frame member located on a second side of the vehicle body in the vehicle-width direction.
  13. The work vehicle according to claim 12, wherein the frame includes a third frame member coupling the frame member on the first side in the vehicle-width direction and the frame member on the second side in the vehicle-width direction together.
  14. The work vehicle according to any one of claims 1 to 13, the work vehicle being used for farmwork.

Description

TECHNICAL FIELD The present invention relates to a work vehicle. The present application claims priority to Japanese Patent Application No. 2023-107634 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; a filling port for the hydrogen gas; a pipe connecting the filling port and the tank; and a frame coupled to the vehicle body, and the frame includes an attachment portion to which the filling port is attached. 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, a cabin is installed on a vehicle body, and the tank is placed on the cabin. It is necessary to fill the tank with hydrogen gas. Therefore, the work vehicle has a filling port for the hydrogen gas. Various structures are conceivable for placement of the filling port. When the filling port is placed near the tank located above the cabin, the length of the pipe connecting the filling port and the tank can be reduced. In this case, however, it may be difficult to perform hydrogen gas filling work since the filling port is located at a high position. Hence, an object of the present disclosure is to provide a work vehicle capable of facilitating hydrogen gas filling work. <Advantageous effect of the present disclosure> According to a work vehicle of the present disclosure, it is possible to facilitate hydrogen gas filling work. <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; a filling port for the hydrogen gas; a pipe connecting the filling port and the tank; and a frame coupled to the vehicle body, and the frame includes an attachment portion to which the filling port is attached. According to the work vehicle having this configuration, even when the tank is placed above the vehicle body, the attachment portion for the filling port can be disposed on a relatively low portion of the frame coupled to the vehicle body. Hydrogen gas, when being filled through the filling port, is supplied to the tank via a pipe. Using the frame including the attachment portion enables the work vehicle to have a degree of freedom in position where the filling port is placed and to facilitate hydrogen gas filling work. (2) Preferably, the work vehicle includes a fuel cell located on a front side of the vehicle body and configured to generate electric power from the hydrogen gas as fuel, and the frame is located near a rear of the vehicle body