MOBILE WORK MACHINE, ESPECIALLY FORESTRY MACHINE

Description

[0001] The invention relates to a mobile work machine, in particular a forestry machine, which has a chassis and a drive unit which has an internal combustion engine and at least one hydraulic pump which is driven by the internal combustion engine and supplies a hydraulic system with pressure medium, wherein the internal combustion engine with the hydraulic pump is arranged in an engine compartment formed within a hood-like housing, wherein the work machine does not have a driver's workplace for an operator and is designed as a work machine which is remotely controlled by means of a radio remote control.

[0002] A generic remote-controlled work machine is known from DE 10 2018 104 810 A1.

[0003] Such mobile machines, designed for example as forestry machines, are used as tree felling aids and as forwarding aids for delivering felled trees to a forest road. Since the machine does not have a driver's workstation, a typical machine can be built compactly and lightweight, allowing it to be used in forest areas unsuitable for conventional large machines. The radio remote control makes the machine easy to operate and requires no lengthy training period. Furthermore, the remote control capability eliminates any risk for the operator on slopes or in the forest.

[0004] Mobile work machines of this type are operated outdoors by the operator using a remote control for long periods of time and in all weather conditions, whereby the operator is also exposed to the elements. To improve the working comfort of the operator operating the work machine, it is desirable to provide the operator with the option of carrying drinks and food in the work machine and keeping them warm, as well as carrying clothing, such as gloves, in the work machine, where they can dry and keep them warm. The work machine of this type known from DE 10 2018 104 810 A1 does not offer a solution for these requirements.

[0005] DE 20 2019 104 164 U1 discloses a storage compartment in a vehicle hood.

[0006] From WO 2008 / 129120 A1 a container is known which can be installed in a loading space of a vehicle and can be heated by the exhaust gas of the vehicle engine.

[0007] CN 101 780 762 A discloses a construction machine designed as an excavator, in which a space between two radiators is designed as a storage compartment for carrying tools and lubricants.

[0008] The present invention is based on the object of providing a work machine of the type mentioned at the outset which is improved with regard to the working comfort of the operator operating the work machine.

[0009] This object is achieved according to the invention in that at least one storage compartment which can be heated by the waste heat of the drive unit is arranged within the hood-like housing, wherein a first storage compartment which can be heated by the waste heat of at least one hot component of the drive unit is arranged within the hood-like housing, wherein the hot component of the drive unit represents an exhaust system of the internal combustion engine.

[0010] The source of the waste heat of the drive unit, which heats the at least one storage compartment, can be formed by the combustion engine or the at least one hydraulic pump or by hoses or pipes of the drive unit.

[0011] One or more storage compartments that can be heated by the waste heat from the drive unit make it possible to carry food and drinks, such as tea or coffee, and clothing, such as gloves, and to heat them or keep them hot, thus ensuring a high level of working comfort on the work machine.

[0012] The at least one storage compartment is arranged within the hood-like housing and is thus integrally built into the hood-like housing, whereby the at least one storage compartment does not lead to an increase in the external dimensions of the compact work machine.

[0013] According to the invention, a first storage compartment which can be heated by the waste heat of at least one hot component of the drive unit is arranged within the hood-like housing and, optionally, a second storage compartment which can be heated by the waste heat of at least one warm component of the drive unit is arranged within the hood-like housing.

[0014] According to the invention, hot components of the drive unit are an exhaust system of the internal combustion engine and in particular a manifold and a rear silencer of the exhaust system. Warm components of the drive unit are, for example, the hydraulic pumps and a cooling device of the internal combustion engine or a cooling device of the hydraulic system.

[0015] The first storage compartment thus forms a hot compartment, which is located close to a hot component of the drive unit and can be heated by its waste heat. The second storage compartment thus forms a warm compartment, which is located close to a warm component of the drive unit and can be heated by its waste heat.

[0016] The first storage compartment, which can be heated by the waste heat from the hot component of the drive unit, thus forms a hot compartment. This can be heated to temperatures in the range of 60-95°C by the waste heat from the hot component of the drive unit, making it suitable for carrying, heating, and keeping food and drinks, such as tea or coffee, hot. The second storage compartment, which can be heated by the waste heat from the warm component of the drive unit, thus forms a warm compartment. This can be heated to temperatures in the range of 30-70°C by the waste heat from the warm component of the drive unit, making it suitable for carrying, drying, and keeping clothing, such as gloves, warm.

[0017] According to an advantageous embodiment of the invention, an exhaust system of the internal combustion engine, comprising a rear muffler, and a cooling device of the hydraulic system or the internal combustion engine are arranged within the hood-like housing. The first storage compartment, which can be heated by the waste heat of the exhaust system, in particular the rear muffler, is arranged within the hood-like housing adjacent to the rear muffler, and / or the second storage compartment, which can be heated by the waste heat of the cooling device, is arranged within the hood-like housing adjacent to the cooling device. This makes it easy to create a hot compartment that can be heated by the waste heat of the rear muffler of the internal combustion engine as a hot component of the drive unit, which is thus suitable for carrying, heating, and keeping food and beverages, such as tea or coffee, hot.Furthermore, this makes it easy to create a warm compartment that can be heated by the waste heat from the cooling system of the internal combustion engine or the hydraulic system as a warm component of the drive unit, which is thus suitable for carrying, drying and keeping warm items of clothing, for example gloves.

[0018] According to an advantageous embodiment of the invention, the rear muffler is arranged in a cooler and exhaust chamber located within the hood-like housing above the engine compartment, with the first storage compartment being arranged in the cooler and exhaust chamber adjacent to the rear muffler. The arrangement of the first storage compartment in the cooler and exhaust chamber adjacent to the rear muffler enables the first storage compartment to be easily heated and tempered using the waste heat from the rear muffler.

[0019] According to an advantageous embodiment of the invention, the cooling device is arranged in the cooling and exhaust space located within the hood-like housing above the engine compartment, with the second storage compartment being arranged in the cooling and exhaust space adjacent to the cooling device. The arrangement of the second storage compartment in the cooling and exhaust space adjacent to the rear muffler enables easy heating and temperature control of the second storage compartment using the waste heat from the cooling device.

[0020] According to an advantageous embodiment of the invention, the rear muffler is arranged in a sound insulation box located in the radiator and exhaust chamber, with a side wall of the sound insulation box simultaneously forming a side wall of the first storage compartment. The sound insulation box thus forms a sound insulation box around the rear muffler and is heated by the waste heat from the rear muffler. If a side wall of the sound insulation box simultaneously forms a side wall of the first storage compartment, heat transfer from the sound insulation box to the first storage compartment can be achieved with a simple structure in order to heat the first storage compartment using the waste heat from the rear muffler.

[0021] In terms of a simple design, advantages arise if, according to an advantageous embodiment of the invention, the first storage compartment is arranged laterally and vertically above the rear muffler. With the arrangement of the first storage compartment laterally and vertically above the rear muffler, the first storage compartment integrated into the hood-like housing can be heated by the waste heat from the rear muffler, even with a simple design.

[0022] According to an advantageous embodiment of the invention, the second storage compartment has a side wall located in the exhaust air flow of the cooler device. This allows heat transfer from the exhaust air flow, and thus the waste heat flow of the cooler device, to the second storage compartment with a simple structure, in order to heat the second storage compartment using the waste heat from the cooler device.

[0023] Particular advantages can be achieved if, according to an advantageous embodiment of the invention, the cooling device is arranged horizontally in the cooling and exhaust chamber with an exhaust air flow directed vertically upwards. This allows the waste heat from the cooling device to be dissipated upwards to the environment via a large air outlet on the top of the working machine.

[0024] With regard to a simple structure, advantages arise if, according to an advantageous embodiment of the invention, the second storage compartment is arranged laterally and vertically above the cooler device. With the arrangement of the second storage compartment laterally and vertically above the cooler device, the second storage compartment integrated into the hood-like housing can be warmed and heated by the exhaust air flow of the cooler device directed upwards to the air outlet.

[0025] According to an advantageous embodiment of the invention, the at least one storage compartment is accessible by means of a cover arranged in a top wall or a side wall of the hood-like housing. Access to the corresponding storage compartment can be achieved easily via a cover arranged in the top wall or the side wall of the hood-like housing.

[0026] According to an advantageous development of the invention, the at least one storage compartment is provided with an additional electric heater. Such an additional heater can be used to control the temperature of the corresponding storage compartment when the waste heat from the drive unit is insufficient, for example, when the work machine is parked during extended downtimes.

[0027] According to an advantageous development of the invention, the at least one storage compartment is provided with an insulating flap device for temperature adjustment. With an insulating flap device, which can have one or more flaps, the temperature in the corresponding storage compartment can be easily adjusted by opening or closing the insulating flap device.

[0028] Further advantages and details of the invention are explained in more detail with reference to the embodiment shown in the schematic figures. Figure 1 a perspective view of a mobile work machine according to the invention, Figure 2 the work machine of the Figure 1 in a plan view of the front section of the working machine, Figure 3 a section along the line AA of the Figure 2 and Figure 4 a section along the line BB of the Figure 2 .

[0029] In the Figure 1a remote-controlled mobile work machine 1 according to the invention, for example a forestry machine, is shown in a perspective view.

[0030] The mobile work machine 1 comprises a chassis 2, which in the illustrated embodiment is formed by two crawler tracks 2a, 2b, each of which is driven, for example, by a hydraulic drive motor.

[0031] The mobile work machine 1 has as its drive source - as shown in the Figures 3 and 4 as can be seen, a drive unit M is arranged within a hood-like housing 4 in the front section thereof. The work machine 1 does not have a driver's workstation for an operator and can be remotely controlled by an operator using a radio remote control (not shown in detail).

[0032] In the illustrated embodiment, the work machine 1 further comprises a cable winch 5, a stanchion 6 and an adjustable ramp plate 7, which is arranged on the rear of a vehicle body 9 of the work machine 1 and is adjustable about a horizontal vehicle transverse axis 8.

[0033] The stanchion 6 is arranged vertically above a base plate 10 of the vehicle body 9.

[0034] The hood-like housing 4, in which the drive unit M and the cable winch 5 are arranged, forms a front half of the working machine 1. The base plate 10 with the stanchion 6 located thereon forms a rear half of the working machine 1. The drive unit M is arranged in a front section of the hood-like housing 4 and the cable winch 5 in a rear section of the hood-like housing 4.

[0035] The M drive unit has - as can be seen from the Figures 3 and 4can be seen - an internal combustion engine 15 and at least one hydraulic pump 16, 17 driven by the internal combustion engine 15, which supplies a hydraulic system of the working machine with pressure medium. The internal combustion engine 15 is - as can be seen from the Figures 3 and 4 As can be seen, it is arranged with a longitudinal axis in the transverse direction of the vehicle and drives at least one hydraulic pump 16, 17, for example a variable-displacement pump, which supplies the hydraulic system of the work machine 1 with pressure medium. The hydraulic system includes, as consumers, the travel drive motors, a hydraulic motor driving the cable winch 5, and other hydraulic consumers, for example hydraulic cylinders for adjusting the ramp shield 7.

[0036] The internal combustion engine 15 and the hydraulic pumps 16, 17, and thus the drive unit M, are arranged in a closed engine compartment 20 arranged within the hood-like housing 4. The engine compartment 20 is bounded on the sides by side panels 21, 22, downwards by the base plate 10, and upwards by a cover plate 23. The side panel 22 forms a lateral outer wall of the hood-like housing 4. The cover plate 23 is bent and has a higher section in the area of ​​the internal combustion engine 15 than in the area of ​​the hydraulic pumps 16, 17. In the longitudinal direction of the vehicle, towards the rear and front, the engine compartment 20 is bounded by a front wall and a rear wall. The engine compartment 20 is preferably provided with insulation (heat insulation and sound insulation).

[0037] In the vertical direction above the engine compartment 20, in which the internal combustion engine 15 and the hydraulic pumps 16, 17 are arranged, a cooling and exhaust gas chamber 30 is formed in the hood-like housing 4, in which a first cooling device 31, a second cooling device 32, and an exhaust system with a rear silencer 33 of the internal combustion engine 15 are arranged. In the illustrated embodiment, the first cooling device 31 is designed as a cooling device of the internal combustion engine 15, and the second cooling device 32 is designed as a cooling device, for example a hydraulic oil cooler, of the hydraulic system. It is understood that the cooling devices 31, 32 can also have interchanged functions, so that the first cooling device 31 is designed as a cooling device, for example a hydraulic oil cooler, of the hydraulic system, and the second cooling device 32 is designed as a cooling device of the internal combustion engine 15.

[0038] The cooling device 31 and / or the cooling device 32 can be provided with a driven fan that generates a cooling air flow. The cooling and exhaust chamber 30 is bounded laterally by the side panels 21, 22 and downwardly by the cover plate 23 of the engine compartment 20. The cooling and exhaust chamber 45 is essentially open at the top and is provided with an air outlet grille 35.

[0039] The cooling device 31 of the internal combustion engine 15 and / or the cooling device 32 of the hydraulic system are preferably arranged horizontally and have an air outlet for a cooling air flow directed vertically upwards. The cooling device 31 of the internal combustion engine 15 and / or the cooling device 32 of the hydraulic system thus enables air and heat dissipation upwards. The cooling device 31 of the internal combustion engine 15 is arranged on the raised section of the cover plate 23 above the internal combustion engine 15, and the cooling device 32 is arranged on the lower section of the cover plate 23 above the hydraulic pumps 16, 17.

[0040] The rear silencer 33 is also arranged on the lower section of the cover plate 23 above the hydraulic pumps 16, 17. The rear silencer 33 is also arranged in a sound insulation box 40 arranged in the cooler and exhaust chamber 30.

[0041] The Figure 2shows a plan view of the cooler and exhaust gas chamber 30 arranged above the engine compartment 20 with the air outlet grille 35 removed, wherein the rear silencer 33, the cooler device 32 of the hydraulic system and the cooler device 31 of the internal combustion engine 15 are shown. As can be seen from the Figure 2 As can be seen, the cooling device 31 of the internal combustion engine 15 and the cooling device 32 of the hydraulic system are arranged next to one another in the transverse direction of the vehicle and the rear silencer 33 is arranged in front of the cooling device 32 in the longitudinal direction of the vehicle.

[0042] According to the invention - as can be seen from the Figures 2 to 4As can be seen, at least one storage compartment 50 or 51, which can be heated by the waste heat of the drive unit M, is arranged within the hood-like housing 4. In the exemplary embodiment shown, two storage compartments 50, 51 are provided, wherein a first storage compartment 50, which can be heated by the waste heat of at least one hot component of the drive unit M, and a second storage compartment 51, which can be heated by the waste heat of at least one warm component of the drive unit M, are arranged within the hood-like housing 4.

[0043] In the illustrated embodiment, the hot component of the drive unit M that heats the first storage compartment 50 is formed by the rear silencer 33. Alternatively, the hot component of the drive unit M that heats the first storage compartment 50 can be formed by a manifold 80 of the exhaust system of the internal combustion engine 15. In the illustrated embodiment, the warm component of the drive unit M that heats the second storage compartment 51 is formed by the cooler device 32. Alternatively, the warm component of the drive unit M that heats the second storage compartment 51 can be formed by the cooler device 31 or by one or both hydraulic pumps 16 or 17 or by hoses or pipes connected to the hydraulic pump 16 or 17.

[0044] According to the invention, within the hood-like housing 4 - as can be seen from the Figures 2 and 3As can be seen, the first storage compartment 50, which can be heated by the waste heat from the hot component of the drive unit M, is arranged close to or adjacent to the hot component of the drive unit M, in the illustrated embodiment close to or adjacent to the rear silencer 33. The first storage compartment 50 is thus designed as a hot compartment, which is intended for carrying, heating, and keeping hot food and drinks, for example tea or coffee.

[0045] According to the invention - as can be seen from the Figures 2 and 4As can be seen, the second storage compartment 51, which can be heated by the waste heat of the warm component of the drive unit A, is arranged within the hood-like housing 4 near or adjacent to the warm component of the drive unit M, in the illustrated embodiment near or adjacent to the cooler device 32. The second storage compartment 51 is thus designed as a warm compartment, which is intended for carrying, drying, and keeping warm items of clothing, for example gloves.

[0046] The first storage compartment 50 is arranged in the cooler and exhaust gas chamber 30 near or adjacent to the rear silencer 33.

[0047] The second storage compartment 51 is accordingly arranged in the cooler and exhaust gas chamber 30 near or adjacent to the cooler device 32.

[0048] The first storage compartment 50 is delimited on the outside by the side panel 22 and on the inside by a vertical boundary panel 55 and a side wall 41 of the noise insulation box 40. The first storage compartment 50 extends forward in the vehicle's longitudinal direction to the front wall 60 of the hood-like housing 4 and rearward to a rear wall 61. The first storage compartment 50 is arranged laterally and vertically above the rear silencer 33 and extends in the area laterally next to the rear silencer 33 to the cover plate 23. The heat is transported from the hot component, in the illustrated embodiment from the rear silencer 33, to the first storage compartment 50 preferably via radiation from the hot component and / or via air mass transport of hot air and / or by heat conduction via the support components fastening the hot component, which may be made of metal or aluminum.

[0049] The second storage compartment 51 is bounded on the outside by the side panel 22 and on the inside by a side wall 56, which lies in the exhaust air flow of the cooler device 32. In the illustrated embodiment, the side wall 56 extends diagonally downward and adjoins the side panel 22 at its lower end. The second storage compartment 51 extends forward in the vehicle's longitudinal direction to the rear wall 61 of the first storage compartment 50 and rearward to a rear wall 63. The second storage compartment 51 is arranged laterally and vertically above the cooler device 32 and extends in the vehicle's transverse direction from the side panel 22 over approximately half the area of ​​the cooler device 32.The heat transport from the warm component, in the illustrated embodiment from the cooler device 32, to the second storage compartment 51 preferably takes place via radiation of the warm component and / or via air mass transport of warm air and / or by heat conduction via the support components fastening the warm component, which may be made of metal or aluminum.

[0050] The first storage compartment 50 is - as shown in the Figure 1 can be seen - accessible by means of a cover 70 arranged in an upper wall of the hood-like housing 4.

[0051] The second storage compartment 51 is - as in the Figure 1 can be seen - accessible by means of a cover 71 arranged in the upper wall of the hood-like housing 4.

[0052] The cover 70 and the cover 71 are arranged laterally next to the air outlet grille 35 in the transverse direction of the vehicle.

[0053] The first storage compartment 50 is thus designed as a storage compartment enclosed by walls 22, 41, 55, 60, 61, 23 and the lid 70.

[0054] The second storage compartment 51 is thus designed as a storage compartment enclosed by walls 22, 56, 61, 63 and the lid 71.

Claims

1. Mobile working machine (1), in particular a forestry machine, which has a chassis (2) and a drive unit (M) which has an internal combustion engine (15) and at least one hydraulic pump (16; 17) which is driven by the internal combustion engine (15) and supplies a hydraulic system with pressure medium, wherein the internal combustion engine (15) with the hydraulic pump (16; 17) is arranged in an engine compartment (20) formed within a hood-like housing (4), wherein the working machine (1) has no driver's workstation for an operator and is designed as a remote controlled working machine (1) controlled by means of a radio remote control, characterized in that at least one storage compartment (50; 51) which can be heated by the waste heat of the drive unit (M) is arranged within the hood-like housing (4), wherein a first storage compartment (50) which can be heated by the waste heat of at least one hot component of the drive unit (M) is arranged within the hood-like housing (4), wherein the hot component of the drive unit (M) is an exhaust system of the internal combustion engine (15).

2. Mobile working machine according to Claim 1, characterized in that a second storage compartment (51) which can be heated by the waste heat of at least one warm component of the drive unit (M) is arranged within the hood-like housing (4).

3. Mobile working machine according to Claim 1 or 2, characterized in that the exhaust system, comprising a rear silencer (33), of the internal combustion engine (15) and a radiator device (32) of the hydraulic system or of the internal combustion engine (15) are arranged within the hood-like housing (4), wherein the first storage compartment (50) which can be heated by the waste heat of the exhaust system, in particular of the rear silencer (33), is arranged within the hood-like housing (4) adjacently with respect to the rear silencer (33), and / or the second storage compartment (51) which can be heated by the waste heat of the radiator device (32) is arranged within the hood-like housing (4) adjacently with respect to the radiator device (32).

4. Mobile working machine according to Claim 3, characterized in that the rear silencer (33) is arranged in a radiator and exhaust compartment (30) arranged within the hood-like housing (4) above the engine compartment (20), wherein the first storage compartment (50) is arranged in the radiator and exhaust compartment (30) adjacently with respect to the rear silencer (33).

5. Mobile working machine according to Claim 3 or 4, characterized in that the radiator device (32) is arranged in the radiator and exhaust compartment (30) arranged within the hood-like housing (4) above the engine compartment (20), wherein the second storage compartment (51) is arranged in the radiator and exhaust compartment (20) adjacently with respect to the radiator device (32).

6. Mobile working machine according to one of Claims 3 to 5, characterized in that the rear silencer (33) is arranged in a sound insulation box (40) arranged in the radiator and exhaust compartment (30), wherein a side wall (41) of the sound insulation box (40) at the same time forms a side wall of the first storage compartment (51).

7. Mobile working machine according to one of Claims 3 to 6, characterized in that the first storage compartment (50) is arranged laterally and vertically above the rear silencer (33).

8. Mobile working machine according to one of Claims 3 to 7, characterized in that the second storage compartment (51) has a side wall (56) lying in the exhaust air flow of the radiator device (32).

9. Mobile working machine according to one of Claims 3 to 8, characterized in that the radiator device (32) is arranged lying in the radiator and exhaust compartment (30) with an exhaust air flow vertically upwards.

10. Mobile working machine according to one of Claims 3 to 9, characterized in that the second storage compartment (51) is arranged laterally and vertically above the radiator device (32).

11. Mobile working machine according to one of Claims 1 to 10, characterized in that the at least one storage compartment (50; 51) is accessible by means of a cover (70; 71) arranged in an upper wall or a side wall of the hood-like housing (4).

12. Mobile working machine according to one of Claims 1 to 11, characterized in that the at least one storage compartment (50; 51) is provided with an electric auxiliary heater.

13. Mobile working machine according to one of Claims 1 to 12, characterized in that the at least one storage compartment (50; 51) is provided with an insulating flap device in each case for temperature regulation.