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EP-4737178-A1 - WORK VEHICLE

EP4737178A1EP 4737178 A1EP4737178 A1EP 4737178A1EP-4737178-A1

Abstract

The present disclosure relates to a work vehicle. A work vehicle of the present disclosure includes: a vehicle body; a driver's seat, an electric motor, and a fuel cell module each installed on the vehicle body; a cabin disposed around the driver's seat; a hydrogen pipe and a hydrogen tank through and from which hydrogen is supplied to the fuel cell module; and a tank case disposed above the cabin and accommodating the hydrogen tank. The tank case includes a lower plate covering a lower surface of the hydrogen tank, side plates covering side surfaces of the hydrogen tank, and an upper plate covering an upper surface of the hydrogen tank, and has a first vent that is open in the lower plate.

Inventors

  • TAKAKI, TAKAHIRO

Assignees

  • Kubota Corporation

Dates

Publication Date
20260506
Application Date
20240501

Claims (10)

  1. A work vehicle comprising: a vehicle body; a driver's seat, an electric motor, and a fuel cell module each installed on the vehicle body; a cabin disposed around the driver's seat; a hydrogen pipe and a hydrogen tank through and from which hydrogen is supplied to the fuel cell module; and a tank case disposed above the cabin and accommodating the hydrogen tank, wherein the tank case includes a lower plate covering a lower surface of the hydrogen tank, side plates covering side surfaces of the hydrogen tank, and an upper plate covering an upper surface of the hydrogen tank, and the tank case has a first vent that is open in the lower plate.
  2. The work vehicle according to claim 1, wherein the tank case further has a second vent being open in an upper portion of the side plate.
  3. The work vehicle according to claim 2, further comprising a hydrogen sensor, wherein the hydrogen sensor is disposed in the tank case at a position adjacent to the second vent.
  4. The work vehicle according to claim 2 or 3, wherein the upper plate is disposed to be inclined with respect to the lower plate, and the second vent is open in the upper portion of the side plate adjacent to a portion of the upper plate, the portion being farthest from the lower plate.
  5. The work vehicle according to claim 2 or 3, wherein the tank case includes a pair of the side plates that are opposite to each other, and has a pair of the second vents that are respectively open in the side plates.
  6. The work vehicle according to claim 1, wherein the tank case has an openable/closable door supported at the side plate in an openable/closable manner with a hinge.
  7. The work vehicle according to claim 6, wherein the hydrogen tank includes a valve configured to adjust an amount of hydrogen flowing into the hydrogen tank and an amount of hydrogen flowing out of the hydrogen tank, and the side plate facing the valve is a first side plate, and the openable/closable door is disposed on the first side plate.
  8. The work vehicle according to claim 7, wherein the tank case includes a second side plate extending in parallel with the first side plate, and the openable/closable door is further disposed on the second side plate.
  9. The work vehicle according to claim 6 or 7, wherein the upper plate is inclined with respect to the lower plate in the tank case.
  10. The work vehicle according to claim 9, wherein the tank case includes a third side plate and a fourth side plate each extending perpendicular to the first side plate and the second side plate, and the upper plate is inclined downward toward at least one of the third side plate and the fourth side plate.

Description

TECHNICAL FIELD The present disclosure relates to a work vehicle. BACKGROUND ART A work vehicle including an electric motor and a battery has conventionally been known (see Patent Literature 1). In the work vehicle disclosed in Patent Literature 1, the battery is disposed in 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 of the present disclosure includes: a vehicle body; a driver's seat, an electric motor, and a fuel cell module each installed on the vehicle body; a cabin disposed around the driver's seat; a hydrogen pipe and a hydrogen tank through and from which hydrogen is supplied to the fuel cell module; and a tank case disposed above the cabin and accommodating the hydrogen tank, and the tank case includes a lower plate covering a lower surface of the hydrogen tank, side plates covering side surfaces of the hydrogen tank, and an upper plate covering an upper surface of the hydrogen tank, and has a first vent that is open in the lower plate. A work vehicle of the present disclosure includes: a vehicle body; a driver's seat, an electric motor, and a fuel cell module each installed on the vehicle body; a cabin disposed around the driver's seat; a hydrogen pipe and a hydrogen tank through and from which hydrogen is supplied to the fuel cell module; and a tank case disposed above the cabin and accommodating the hydrogen tank, and the tank case includes a lower plate covering a lower surface of the hydrogen tank, a side plate covering a side surface of the hydrogen tank, and an upper plate covering an upper surface of the hydrogen tank, and has an openable/closable door supported at the side plate in an openable/closable manner with a hinge. According to the present disclosure, in a work vehicle including a fuel cell module, a hydrogen tank can be accurately protected by a tank case. According to the present disclosure, in a work vehicle including a tank case for a hydrogen tank, maintenance of the hydrogen tank can be facilitated. 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 illustrating the work vehicle according to the embodiment of the present disclosure.[FIG. 3] FIG. 3 is a rear view illustrating the work vehicle according to the embodiment of the present disclosure.[FIG. 4] FIG. 4 is a right side view illustrating the work vehicle according to the embodiment of the present disclosure.[FIG. 5] FIG. 5 is a left side view illustrating the work vehicle according to the embodiment of the present disclosure.[FIG. 6] FIG. 6 is a plan view illustrating the work vehicle according to the embodiment of the present disclosure.[FIG. 7] FIG. 7 is a bottom view illustrating the work vehicle according to the embodiment of the present disclosure.[FIG. 8] FIG. 8 is a partially exploded perspective view illustrating the work vehicle of the present disclosure.[FIG. 9] FIG. 9 is a left side view of the work vehicle from which some components are removed.[FIG. 10] FIG. 10 is a perspective view of a tank case.[FIG. 11] FIG. 11 is an explanatory view of a placement of the tank case in the work vehicle.[FIG. 12] FIG. 12 is a schematic sectional view of a tank and the tank case.[FIG. 13] FIG. 13 is a perspective view illustrating the tank case in a state in which an openable/closable door is open, and a tank in the tank case. DETAILED DESCRIPTION <Problems to be solved by the invention> Consideration has recently been given to work vehicles that travel in such a manner that an electric motor is driven using electric power generated from hydrogen as fuel by a fuel cell module. Such work vehicles include a hydrogen tank configured to store the hydrogen. It has conventionally been desired to develop a tank case capable of accurately protecting the hydrogen tank from an external impact, a temperature rise, and the like. It has been required for the tank case to facilitate maintenance of the hydrogen tank accommodated in the tank case. An object of to the present disclosure is, in a work vehicle including a fuel cell module, to accurately protect a hydrogen tank by a tank case. Another object of the present disclosure is, in a work vehicle including a tank case for a hydrogen tank, to facilitate maintenance of the hydrogen tank. <Advantageous effect of the invention> According to the present disclosure, in a work vehicle including a fuel cell module, it is possible to accurately protect a hydrogen tank by a tank case. According to the present disclosure, in a work vehicle including a tank case for a hydrogen tank, it is possible to facilitate maintenance of the hydrogen tank. <Outline of embodiments of the present disclosure> An outline of below-listed embodiments of the present disclosure is described. (1) A work vehicle of t