WORK MACHINE

Description

[0001] The present invention relates to a work machine having a machine room and a housing, wherein the housing at least partially surrounds or can surround the machine room.

[0002] From the state of the art, work machines with machine rooms from which substances or gases are discharged via pipes are known, such as from the document US 6 427 798 B1.

[0003] The pipes are led out of the engine room and the substances or gases are discharged into the environment from an open end of the pipe or a mouth.

[0004] The cable routing and the integration of the outlet into the working machine are often accessible from the outside and are designed in such a way that the cable or the outlet can be impaired in its function or damaged by vandalism.

[0005] Against this background, the present invention is based on the object of providing a structurally improved integration of cables in work machines.

[0006] This object is achieved by the subject matter having the features of independent claim 1. Advantageous developments of the invention are the subject matter of the dependent claims.

[0007] Accordingly, according to the invention, a ventilation space in which a line opening of a line ends is arranged on the housing, wherein the ventilation space is delimited from the machine room, preferably delimited in a gas-tight manner, and wherein the ventilation space is formed by a partial region of the housing and a base piece arranged in the machine room.

[0008] The term "engine room" should preferably be understood to mean a conventional engine compartment, a fuel system and / or tank installation location, or any other component installation location, e.g., fan drives. The engine room may contain ignition sources.

[0009] It is conceivable that the base piece is mounted securely to the machine.

[0010] It is preferably provided that the ventilation chamber is arranged on the machine room side.

[0011] The pipe outlet can also be referred to as a terminal piece. The pipe outlet of the pipe can also comprise part of the pipe. The pipe outlet can also be connected to the pipe, preferably screwed onto the pipe.

[0012] Substances and / or gases in the ventilation chamber should preferably not penetrate into the machine room, but should be discharged to the outside into the environment of the working machine.

[0013] Preferably, the partial area comprises a component mounted in the housing, preferably a box. The component is thus preferably enclosed by the housing and is a component of the housing.

[0014] Preferably, the partial area or ventilation chamber does not protrude outward from the housing. The partial area is preferably a recess in the housing, comparable to a loggia.

[0015] In an advantageous embodiment, the housing comprises an opening that is connected or connectable to the venting chamber, which is covered by a grille or perforated plate arranged on or in the housing. A substance or gas can preferably escape from the venting chamber into the environment through the opening. It can also be provided that the venting chamber has an opening through which gas can escape to the outside. The opening of the venting chamber can be the opening of the housing.

[0016] It is conceivable that the line is a degassing line, a hydrogen overpressure line or a vent line and / or that the line outlet has a protective cap.

[0017] It is conceivable that the cable outlet is mounted or attached to the base piece.

[0018] The cables or cable outlets are preferably arranged elegantly within the silhouette of the work machine and are preferably designed in accordance with the guidelines.

[0019] Covering the opening preferably ensures that the mandatory protective cap on the cable outlet cannot be lost due to vandalism.

[0020] It is preferably provided that seals are arranged on the base piece and / or on the housing, which can effect the, preferably gas-tight, demarcation of the ventilation space from the machine room.

[0021] The housing or the part of the housing and the base piece can preferably interact with the seals in such a way that a gas-tight ventilation space is created towards the machine room.

[0022] The sealing between the base and the box is achieved, for example, by means of rubber seals, which can also compensate for the varying gap dimensions between parts fixed to the machine room and the housing.

[0023] It is also conceivable that the housing can be lifted off or opened and / or is a hood or cover.

[0024] It can therefore preferably be provided that a box or console which is movable with the housing, the hood or the cladding, when the housing is closed, seals off the engine room together with the base piece, so that a substance or gas escaping from the line, such as hydrogen, can escape via a grid or perforated plate incorporated in the housing and cannot enter the engine room, thus preventing the substance or gas from igniting in the engine room.

[0025] Preferably, the venting chamber allows a protective cap to be blown off or detached from the pipe outlet.

[0026] The design of the section or the box or the venting chamber preferably allows the protective cap to be blown off in the event of pressure increase in the line.

[0027] It is also conceivable that water present in or penetrating the ventilation space can drain away via the base piece.

[0028] It can be provided that the housing comprises sheet metal and / or plastic and / or a plastic composite material and / or a combination of materials.

[0029] It is preferably provided that the work machine comprises a fuel cell drive and / or a hydrogen reciprocating piston engine and / or a fuel system, in particular a hydrogen fuel system, for fuel that is present at least partially in a gaseous state and / or that the work machine is a mobile work machine.

[0030] Preferably, the work machine is provided with a hydrogen fuel system that supplies a fuel cell drive or a hydrogen reciprocating piston engine.

[0031] Furthermore, the fuel in the fuel system can be any conceivable gaseous fuel, such as hydrogen, natural gas or methane gas.

[0032] It may be useful for the fuel system to be able to route outgassing lines and pressure relief lines from the engine room at a suitable position.

[0033] The work machine is preferably a wheel loader, a telescopic loader, an excavator with wheel and / or crawler chassis, an articulated dump truck, a bulldozer and / or crawler loader or a machine in the field of material handling technology.

[0034] It is preferably possible to discharge the lines or hydrogen overpressure lines or vent lines into the environment in accordance with the guidelines.

[0035] The invention solves the requirements of the Automotive Hydrogen Directive in an extremely practical, but also elegant manner.

[0036] It should be noted here that the terms "a" and "an" do not necessarily refer to exactly one of the elements, although this represents a possible embodiment, but can also refer to a plurality of the elements. Likewise, the use of the plural also includes the presence of the element in question in the singular, and conversely, the singular also encompasses several of the elements in question. Furthermore, all features of the invention described herein can be combined with one another as desired or claimed in isolation from one another.

[0037] Further advantages, features, and effects of the present invention will become apparent from the following description of preferred embodiments with reference to the figures, in which identical or similar components are designated by the same reference numerals. Herein: Fig. 1: a sectional view of an embodiment of a work machine according to the invention. Fig. 2: a sectional view of this embodiment of a work machine according to the invention from a different perspective. Fig. 3: a sectional view of this embodiment of a work machine according to the invention from a different perspective. Fig. 4: a partial view of this embodiment of a work machine according to the invention.

[0038] In Figure 1 it can be seen that a hood 10 at least partially surrounds a machine room 1.

[0039] A bracket 13 is attached to the hood 10. A recess 11 is formed by the housing 10 and the bracket 13. A seal 4 is attached to the bracket 13 and rests against a base piece 5. The base piece 5 is fastened to or on a tank pan. Another seal 4 is attached to the base piece 5 and rests against the inside of the housing 10. The recess 11 and the base piece 5, together with the seals 4, form a ventilation chamber. The recess 11 is covered on the outside by a perforated plate 12 arranged on the hood 10. Gas can escape through the perforated plate 12. The perforated plate 12 prevents anyone from reaching into the recess 11.

[0040] In Figure 1 It can also be seen that several cables 2 are routed through the base piece 5. The cables 2 terminate in cable outlets. The base piece 5 can be attached to the cables 2.

[0041] Protective caps 3 are shown in a position detached from the cable outlets to illustrate that the indentation 11 offers enough space for the protective caps 3 to be detached or blown off.

[0042] The cables 2 may only protrude upwards from the base piece 5 up to a certain height and the base piece 5 preferably has a minimum distance from the housing 10, since otherwise the cover 10 cannot be opened.

[0043] The Figure 2 and 3 shows the arrangement of the mentioned elements again from a different perspective.

[0044] In Figure 4 The hood 10 of a work machine is shown with an inwardly extending recess 11, which has an outward opening. Protective caps 3 are arranged in a detached position in the recess 11.

Claims

1. Working machine, comprising an engine room (1) and a housing (10), wherein the housing at least partially surrounds or can surround the engine room, characterized in that a venting space, in which a line mouth of a line (2) ends, is arranged on the housing, wherein the venting space is delimited from the engine room, preferably delimited in a gas-tight manner, and wherein the venting space is formed by a partial region of the housing and a bottom piece (5) arranged in the engine room.

2. Working machine according to claim 1, characterized in that the partial region comprises a component, preferably a box, mounted in the housing.

3. Working machine according to claim 1 or 2, characterized in that the housing comprises an opening connected or connectable to the venting space and covered by a grille or perforated plate arranged on or in the housing.

4. Working machine according to any one of the preceding claims, characterized in that the venting space does not project outwardly from the housing.

5. Working machine according to any one of the preceding claims, characterized in that the line mouth of the line is arranged at the bottom piece.

6. Working machine according to any one of the preceding claims, characterized in that the line is an outgassing line, a hydrogen overpressure line or a vent line and / or that the line mouth comprises a protective cap.

7. Working machine according to any one of the preceding claims, characterized in that seals are arranged on the bottom piece and / or on the housing, which can effect the, preferably gas-tight, delimitation of the venting space with respect to the engine room.

8. Working machine according to any one of the preceding claims, characterized in that the housing can be lifted or folded open and / or is a hood or casing.

9. Working machine according to any one of the preceding claims, characterized in that the venting space allows a protective cap to be popped off or detached from the line mouth.

10. Working machine according to any one of the preceding claims, characterized in that water present in the venting space can drain off via the bottom piece.

11. Working machine according to any one of the preceding claims, characterized in that the housing comprises sheet metal and / or plastic material and / or a plastic composite material and / or a combination of materials.

12. Working machine according to one of the preceding claims, characterized in that the working machine comprises a fuel cell drive and / or a hydrogen reciprocating engine and / or a fuel system, in particular a hydrogen fuel system, for fuel present at least in sections in the gaseous state and / or in that the working machine is a mobile working machine.