ARBEITSMASCHINE

Abstract

The present invention relates to a work machine, in particular a wheeled loader, having a cabin for the operator of the work machine and having an engine room arranged behind the cabin, wherein the work machine has a drive that is operable with hydrogen; and in that one or more tanks for the reception of hydrogen are present, with the tank or tanks being arranged in a hydrogen fuel system behind the cabin and above the engine room.

Claims

1. A work machine, having a cabin for the operator of the work machine and having an engine room arranged behind the cabin, wherein the work machine has a drive that is operable with hydrogen; and in that one or more tanks for the reception of hydrogen are present, with the tank or tanks being arranged in a hydrogen fuel system behind the cabin and above the engine room.

2. A work machine in accordance with claim 1, wherein the engine room is configured as narrowed to improve the view of the machine operator.

3. A work machine in accordance with claim 2, wherein the narrowing is present at one side or at both sides of the engine room.

4. A work machine in accordance with claim 2, wherein fewer cameras and/or sensor(s) are arranged by means of which images or signals behind the work machine can be transmitted to the machine operator than with a conventional work machine having such an image or sensor detection; or in that no such camera and/or no such sensor is/are present.

5. A work machine in accordance with claim 1, wherein the hydrogen fuel system is suitable to store hydrogen in liquid and/or gaseous form and/or in bound form.

6. A work machine in accordance with claim 1, wherein a structure is present that protects against mechanical influences and that at least partially surrounds the hydrogen fuel system.

7. A work machine in accordance with claim 1, wherein cladding is present that at least partially surrounds the hydrogen fuel system.

8. A work machine in accordance with claim 1, wherein no other component of the work machine that may represent an ignition source is located above the hydrogen fuel system.

9. A work machine in accordance with claim 1, wherein the work machine has a fuel cell for the generation of electrical energy by means of hydrogen and/or has a hydrogen combustion engine.

10. A work machine in accordance with claim 1, wherein the work machine does not have any combustion engine for diesel fuel or gasoline to drive the work machine; or in that the work machine has a combustion engine for diesel fuel or gasoline to drive the work machine in addition to the drive operable by hydrogen.

11. A work machine in accordance with claim 1, wherein the components of the hydrogen fuel system are not fixedly connected to the work machine, but are replaceable.

12. A work machine in accordance with claim 1, wherein the hydrogen fuel system at least partially forms a preinstallation assembly.

13. A work machine in accordance with claim 11, wherein the hydrogen fuel system comprises or consists of one or more of the components of tank for the receiving of hydrogen or containing hydrogen; valve; or piping.

Description

BRIEF DESCRIPTION OF THE FIGURES

[0033] There are shown:

[0034] FIG. 1: a schematic side view of a wheeled loader from the right;

[0035] FIG. 2: a schematic side view of a wheeled loader from the left;

[0036] FIG. 3: a schematic plan view of the wheeled loader;

[0037] FIG. 4: a schematic plan view of the wheeled loader in a sectional plane beneath the hydrogen fuel system with a field of vision of the machine operator to the rear; and

[0038] FIG. 5: a schematic plan view of the wheeled loader with a field of vision of the machine operator to the rear.

DETAILED DESCRIPTION

[0039] FIGS. 1 to 2 show side views of an embodiment of the wheeled loader 1 in accordance with the invention.

[0040] The wheel loader 1 has a front part 2 and a rear part 3 that are connected to one another by an articulated joint.

[0041] The cabin is marked by the reference numeral 4.

[0042] The engine room 8 that inter alia has the drive technology of the wheeled loader for driving the drive axles 7 of the wheeled loader 1 is located in the rear part.

[0043] As can be seen from FIGS. 1 and 2, the hydrogen fuel system comprising a plurality of individual tanks 5 is located behind the cabin 4 and above the engine room 8. Said hydrogen fuel system is surrounded at all sides by protective cladding 6.

[0044] The cladding or the hydrogen fuel system extends substantially up to the cabin roof and/or over the entire width of the cabin.

[0045] 9 designates the field of view of the machine operator to the rear.

[0046] FIG. 3 shows a plan view of the wheeled loader in accordance with FIG. 1 and illustrates the exemplary design in which a plurality of tanks 5 are arranged behind one another transversely to the direction of travel.

[0047] The double arrow around the articulated joint shown by dashed lines illustrates the movability of the front and rear parts relative to one another.

[0048] A plan view without a hydrogen fuel system or in a sectional plane beneath the hydrogen fuel system can be seen from FIG. 4.

[0049] As can be seen from FIG. 4, the cladding of the engine room 8 has an indentation 10, i.e. a narrowing, at both sides that is triangular in a plan view and that allows the machine operator to have sufficient visibility to the rear despite the hydrogen fuel system. The field of view of the machine operator to the rear is marked by reference numeral 9.

[0050] This indentation 10 preferably extends at both sides of the engine room or from its cladding.

[0051] This indentation 10 preferably extends over the entire height of the engine room or from its cladding.

[0052] FIG. 5 shows the arrangement in accordance with FIG. 4, however with tanks 5. It can be seen from FIG. 5 that the field of view 9 to the rear in accordance with FIG. 4 is not restricted by the hydrogen fuel system or its cladding due to the narrowing.