SINGLE-AXLE VEHICLE

Description

Technical field

[0001] The invention relates to a single-axle vehicle according to the preamble of claim 1. State of the art

[0002] Such single-axle vehicles are already known and in use in a variety of forms and designs. For example, DE 10 2005 026 754 A1 and EP 1 731 014 A1 disclose a single-axle vehicle in which the drive for at least one spiked roller is arranged in the spiked roller itself.

[0003] Reference is further made to publication XP009520012 entitled "Original Operating Instructions Brielmaier Motor Mower" dated November 30, 2013. Reference is also made to publication XP055716736 entitled "Brielmaier: The High-Performance Universal Machine" dated December 31, 2015. In addition, reference is made to publication XP055716729 entitled "Mowing Technology Forage Harvesting et al.: Rapid MONTA Powerful Mower for Extremely Steep Slopes" dated May 31, 2016. These publications describe single-axle mowers according to the preamble of claim 1.

[0004] Reference is also made to AT 513 191 A1, which, among other things, discloses a control handle for a single-axle tractor according to the preamble of claim 1. JP 2009 184411 A discloses a wheel for an agricultural machine which has circular openings in the rim area.

[0005] Furthermore, reference is made to DE 10 2005 026 761 A1, which features a vehicle with at least one spiked roller with a roller shell on the surface of which there are projections with a point, wherein the projections are pyramidal or conical in shape as spikes. Object of the invention

[0006] The object of the present invention is to provide a single-axle vehicle which, compared to the prior art, has a significantly improved design of the spiked rollers. Solution to the task

[0007] The features according to claim 1 lead to the solution of the problem.

[0008] The single-axle vehicle according to the invention comprises a drive, a radiator, a hydraulic system with connections for attachments, for example, standardized hydraulic coupling connections, a tool holder, a first spiked roller, and a second spiked roller. In the preferred embodiment, the drive is an internal combustion engine. Other drive systems are also conceivable in principle.

[0009] A crossbeam is arranged between the first and second spiked rollers, with the drive unit and the cooler located on this crossbeam. The drive unit is connected to the two spiked rollers via a power transmission mechanism. "Power transmission" here means the transfer of energy from the drive unit to the two spiked rollers, for example, via a suitable gearbox, gear ratios, and a shaft.

[0010] Each spiked roller has a cylindrical shell whose surface features pointed projections, which are pyramidal or conical in shape, resembling spikes. The point of each projection is attached to a base and detachably connected to it. The projections are at least partially integral and extend from the cylindrical shell. An outer surface or side of the projection curves concavely inwards from the point to a base.

[0011] The tip has a threaded hole for receiving a screw bolt. Furthermore, the screw bolt is pierced by a washer or similar component, which in turn is inserted into the base.

[0012] The disc has a larger diameter than the upper opening of the base, which is covered by the tip. Furthermore, the tip is inserted into the opening of the base with a supported ring collar.

[0013] The tip, in turn, is made of a relatively wear-resistant plastic.

[0014] The first spiked roller and / or the second spiked roller is / are designed to be air-permeable. Specifically, this means that the spiked rollers must be air-permeable in such a way that air can flow into the interior of the spiked rollers, either via the running surface or, more preferably, via the end faces facing away from the drive, in order to be directed from the interior onto the cooler.

[0015] The spiked rollers feature numerous replaceable spikes on their outer surface. The outer surface refers to the rolling area of ​​the spiked roller. These replaceable spikes can be made of metal or plastic. The choice of spike material depends on the user's preferences and requirements.

[0016] In another embodiment, the cooler is arranged in the first spiked roller and / or the second spiked roller, wherein the first spiked roller and / or the second spiked roller are / are designed to be permeable to air. In this embodiment, the cooling circuit or the cooling medium would then have to be brought from the respective spiked roller to the drive.

[0017] When air from the outside of the spiked roller enters the interior, it is cooled as it passes through, further increasing the cooler's efficiency. This cooling also occurs because the spiked roller, which is mostly made of metal, transfers heat to the surface it rolls on, thereby cooling the air passing through it.

[0018] In each of the first and / or second spiked rollers, an inner shell and an outer shell are also present. For example, hemispherical or funnel-shaped structures are suitable as inner or outer shells within the scope of the invention, wherein the hemisphere may have an irregular, non-harmonic surface area. In the two spiked rollers, the respective inner shell is arranged relative to the crossbeam, and the respective outer shell is arranged away from the crossbeam. Furthermore, the inner shell forms a second base, and the outer shell forms a first base, with the two bases abutting each other. The respective base may be a partially planar region of the hemispherical or funnel-shaped structure. By providing the inner and outer shells in the spiked roller, the spiked roller is stabilized in a special way.Furthermore, the inner shell of the spiked roller creates additional storage space, which can be used to hold suitable parts. This relieves the load on the crossbeam.

[0019] Parts can be shifted from the centrally located crossbeam to the outer spiked rollers. This, in turn, shifts the center of gravity towards the outer edges of the crossbeam. Furthermore, the parts can also be positioned below the crossbeam within the spiked roller.

[0020] For this purpose, the components are arranged below the section of the crossbeam that extends into the spiked roller, for example, below the hub drive. Within the scope of the invention, the hub drive is referred to as the power transmission. This, in turn, has the advantage that the center of gravity is brought closer to the ground, thereby achieving a better working position, for example, on steep terrain.

[0021] Power transmission takes place within the interior of each spiked roller. This is a functional unit that transmits the drive force to the respective spiked roller via rotation.

[0022] The spiked rollers feature numerous replaceable spikes on their outer surface. The outer surface refers to the rolling area of ​​the spiked rollers. These replaceable spikes can be made of either metal or plastic. The choice of spike material depends on the user's preferences and requirements.

[0023] The first spiked roller and / or the second spiked roller each consist of a roller tube. This is a cylindrical structure open at both ends. The outer surface represents the outer circumference of the cylindrical structure, which is larger than the inner surface of the roller tube. It is also conceivable that the outer surface of the spiked roller or the roller tube could have ventilation openings. These could be used in addition to other such openings or as the sole means of ventilation.

[0024] Furthermore, the outer shell and the inner shell are arranged in the inner area of ​​the roller tube, wherein the outer shell and the inner shell have a funnel shape, wherein the first funnel shape of the outer shell forms a first bottom and the second funnel shape forms a second bottom.

[0025] Each funnel-shaped structure has a single base that is essentially flat. From this base, the funnel walls expand, meaning they increase in circumference and spread outwards.

[0026] In this context, the outer shell has an intake opening. In a preferred embodiment, this intake opening is circular and / or oval. Preferably, a plurality of intake openings are arranged in the outer shell. They are recessed into the respective funnel wall and serve to introduce fresh air into the roller tube, with the fresh air flowing into the roller tube from the side facing away from the drive or the cooler. In a particularly preferred embodiment, the intake openings near an outer flange of the intake opening have a larger circumference than the intake openings located near the first base. This results in a particularly advantageous flow characteristic.

[0027] Furthermore, the inner shell has a passage opening. In fact, it has a plurality of passage openings. Similarly, the inner shell includes an inner flange. In a preferred embodiment, this passage opening is circular and / or oval. It is recessed into the respective funnel wall and serves to release fresh air from the roller tube, with the fresh air flowing out of the roller tube on the side facing the drive or the cooler. In a particularly preferred embodiment, the passage openings near the inner flange have a larger circumference than the passage openings located near the second bottom. This results in a particularly advantageous flow characteristic.

[0028] The first and second end plates form a common opening when installed, which accommodates a roller connection. "Installed" here means that the spiked roller is fully assembled and ready for use in a single-axle vehicle. The common opening is formed by the first plate having one opening and the second plate having another. When installed, the two openings are essentially congruent. A drive shaft for the roller connection protrudes through the opening, secured by a dust-resistant assembly that connects the drive shaft to both the inner and outer shells, thereby transmitting and fixing all components. The respective roller connection is operatively linked to the power transmission.This in turn means that when the drive shaft rotates, the spiked roller rotates in the same way.

[0029] The outer shell includes the outer flange. This is a folded-over section of the outer shell's end. This is the end section that, in the installed state, faces away from the cooler or drive. The inner shell also has its largest circumference in the area of ​​its outer appearance, allowing it to be at least partially recessed into the roller tube. At least the portion of the inner shell that projects into the roller tube has corresponding bores so that the outer shell can be connected to the roller tube using screws or other fasteners through the roller tube's bores.

[0030] The inner shell features a cover plate. This cover plate is positioned within the inner shell in such a way that it essentially leaves a through-slot between the funnel wall of the inner shell and itself, allowing air inside the roller tube to escape through this slot. This enables a more controlled, compressed airflow. Furthermore, the cover plate also serves, among other things, to protect the power transmission.

[0031] The hydraulic system, which is intended for the operation of the various attachments, has several interconnected hydraulic reservoirs located at different positions on the single-axle vehicle.

[0032] Furthermore, the hydraulic system is operatively connected to the cooler. Operative connection here means that the cooler cools the hydraulic fluid of the hydraulic system.

[0033] The placement of a first and second hydraulic reservoir inside the inner shell of the first and second spiked rollers, respectively, offers a significant advantage in addition to shifting the center of gravity towards the ground. Because the first and second spiked rollers are designed to be air-permeable and feature intake openings, through-holes, and slots, a continuous airflow exists inside them. This airflow, combined with the heat dissipated to the ground via the roller tube, provides passive cooling for the first and / or second hydraulic reservoirs. This particularly benefits the radiator, which is less stressed by the hydraulic system and thus retains more capacity for cooling the drive system. Character description

[0034] Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawings; these show in: Figure 1 shows a first partial side view of the single-axle vehicle according to the invention from the left; Figure 2 shows a frontal view of the single-axle vehicle from the Figure 1 Figure 3 shows a second partial side view of the single-axle vehicle according to the invention from the right; Figure 4 shows a cutaway enlarged view of a spiked roller according to the invention. Example of implementation

[0035] In Figure 1 Figure 1 shows a single-axle vehicle E. It consists primarily of a drive 1, which is arranged relatively centrally between a first spiked roller 3 and a second spiked roller 4.

[0036] Furthermore, a crossbeam 6 is shown, which runs from the first spiked roller 3 to the second spiked roller 4 and on which the drive 1 is mounted. The drive 1 is arranged closer to the second spiked roller 4, and a cooler 2 is located closer to the first spiked roller 3. Part of a hydraulic system 26 is also visible in the area of ​​the cooler 2.

[0037] Furthermore, a tool holder 5 is provided, which is arranged at an angle on the front side in front of the drive 1. This tool holder 5 serves for the subsequent attachment of a work implement, such as a mowing device or other agricultural equipment.

[0038] As in the Figure 1As can be clearly seen, the cooler is not arranged parallel behind the tool holder 5, but rotated away from the drive 1 in the direction of the first spiked roller 3. This means that the cooler 2 is arranged to receive air towards the first spiked roller 3, which is designed to be air-permeable.

[0039] Furthermore, an intake opening 7.1 is shown on an end face of the second spiked roller 4. This intake opening 7.1, like the other intake openings shown, serves to introduce fresh air into the second spiked roller 4.

[0040] Finally, the two spiked rollers 3, 4 have a large number of spikes 16 on their outer surface or outer running surface.

[0041] The one in Figure 1 Features already described are only described again separately in the following figures if there is a specific need to do so. Otherwise, the explanations regarding the Figure 1This also applies to the features of the other figures. This is especially true when the same functional features are assigned the same reference numbers.

[0042] In the Figure 2 is a frontal view of the Figure 1 shown. It shows how the cooler 2 is arranged at a slight angle to the drive 1, with one air intake side of the cooler 2 clearly facing the first spiked roller 3.

[0043] In the Figure 3 is in addition to those in the Figure 1 and 2 The described features indicate that an intake opening 7 is present inside the first spiked roller 3.

[0044] Furthermore, a third hydraulic reservoir 29 is particularly clearly visible from this view, which is arranged laterally in the direction of travel on the cooler 2. The third hydraulic reservoir 29 also has corresponding hydraulic coupling connections 30 for the attachments.

[0045] As already described, this variant represents only one embodiment, whereby in particular the positioning or presence of the third hydraulic reservoir 29 can be flexibly designed.

[0046] In the Figure 4 Figure 1 shows a sectional side view of the first spiked roller 3. A roller tube 8 is shown, on whose outer surface the spikes 16 are arranged. Furthermore, an outer shell 9 and an inner shell 10, which are arranged inside the roller tube 8, can be seen.

[0047] The outer shell 9 has a first funnel shape 20. The first funnel shape 20 in turn forms a first base 21. The first base 21 is flat. The first funnel shape 20 forms the intake opening 7. The first base 21 has one end of the first funnel shape 20. The other end of the first funnel shape 20 forms an outer flange 14.

[0048] Furthermore, it can be seen how the outer flange 14 is connected to the roller tube 8 via a second connecting element 19.

[0049] The inner shell 10 is arranged towards the drive 1 or the cooler 2. The outer shell 9 is arranged away from the drive 1 or the cooler 2. The inner shell 10 forms a second funnel shape 22, in which a through-opening 12 is incorporated. In addition to the designated through-opening 12, further through-openings without reference numerals are also shown. The second funnel shape 22 forms a second bottom 23 on one end and an inner flange 15 on the other.

[0050] The first floor 21 and the second floor 23 are positioned approximately centrally within the first spiked roller 3. The two floors 21 and 23 form a common opening 24. A roller connection 13 is shown within this opening 24, and this roller connection 13 is in turn connected to a power transmission 17.

[0051] Furthermore, a first connecting element 18 is shown, which connects the inner shell 10 to the roller tube 8. Its cover plate 11 is also shown, which is connected to the power transmission 17 and forms a through-slot 25 between the inner shell 10 and the cover plate 11.

[0052] A first hydraulic reservoir 27 is arranged on the underside of the power transmission 17 and inside the inner shell 10, where underside means the side which faces a ground or a drivable surface when the single-axle vehicle is used properly.

[0053] In the present embodiment, the first hydraulic reservoir 27 is comparatively small and does not occupy the maximum volume below the power transmission unit 17 within the inner shell 10. Regardless of the embodiment shown in the figure in Figure 4 As shown, the first hydraulic reservoir 27 can occupy significantly more volume in this area, so that the maximum volume in this area below the power transmission 17 is utilized. The shape of the hydraulic reservoir 27 can also differ from the shape of the hydraulic reservoir 27 shown. Figure 4The difference lies in the design. Here, with regard to filling the available free space, a shape adapted to the inner shell 10 and the power transmission is conceivable, which utilizes the maximum volume. Maximum in this context means that the hydraulic reservoir 27 is arranged below the power transmission 17 in the inner shell 10, filling the entire volume and extending up to the second funnel shape 22. The rotational capability of the first spiked roller 3 should not be impaired.

[0054] The description for the first spiked roller 3 also applies to the second spiked roller 4. The second spiked roller 4 also has an additional inner shell, an additional outer shell, an additional power transmission, and a second hydraulic reservoir. In the illustrated embodiment, the two spiked rollers 3 and 4 are identical. Reference symbol list

[0055] 1 drive 2 cooler 3 First spiked roller 4 Second spiked roller 5 Tool holder 6 crossbeam 7 Intake opening 8 Roller tube 9 outer shell 10 inner shell 11 Cover plate 12 Passage opening 13 Roller connection 14 Outer flanging 15 inner flanging 16 Spine 17 Power transmission 18 First connecting element 19 Second connecting element 20 First funnel shape 21 First floor 22 Second funnel shape 23 Second floor 24 breakthrough 25 Through-slot 26 hydraulic system 27 first hydraulic reservoir 28 29 third hydraulic reservoir 30 hydraulic coupling connections 31 32 E single-axle vehicle

Claims

1. Single-axle vehicle (E) with a drive (1), a radiator (2), a first spiked roller (3), a second spiked roller (4) and a hydraulic system (26), wherein a cross member (6) is arranged between the first spiked roller (3) and the second spiked roller (4), wherein the drive (1) and the radiator (2) are arranged on the cross member (6), wherein the drive (1) is connected to the two spike rollers (3, 4) via respective power transmission means (17.1, 17.2) for transmitting power, wherein the hydraulic system (26) is operatively connected to the radiator (2), characterised in that the first and / or second spiked rollers (3, 4) have an inner shell (10) and an outer shell (9), the inner shell (10) being arranged towards the cross member (6) and the respective outer shell (9) being arranged away from the cross member (6), the inner shell (10) has a second base (23) and the outer shell (9) has a first base (21), the first base (21) and the second base (23) being arranged adjacent to each other, the first spiked roller (3) and the second spiked roller (4) being designed to be air-permeable and having suction openings (7), passage openings (12) and passage slots (25).

2. Single-axle vehicle (E) according to claim 1, characterised in that a first hydraulic reservoir (27) is arranged within a first inner shell (10.1) of the first spiked roller (3) below the first power transmission (17.1).

3. Single-axle vehicle (E) according to one of claims 1 or 2, characterised in that a second hydraulic reservoir is arranged within a second inner shell (10.2) of the second spiked roller (4) below the second power transmission (17.2).

4. Single-axle vehicle (E) according to one of claims 2 or 3, characterised in that the first hydraulic reservoir (27) and the second hydraulic reservoir fill a maximum volume in the area below the power transmission (17.1, 17.2) within the inner shell (10) towards an inner wall of the inner shell (10.1, 10.2), wherein the first hydraulic reservoir (27) is arranged at one end of the cross member (6) below the first power transmission (17.1) and the second hydraulic reservoir is arranged at the second end of the cross member (6) below the second power transmission (17.2).

5. Single-axle vehicle (E) according to claim 1, characterised in that the hydraulic system (26) is in operative connection with the radiator (2).

6. Single-axle vehicle (E) according to claim 1, characterised in that the hydraulic system (26) has hydraulic coupling connections (30) for attachments.

7. Single-axle vehicle (E) according to claim 6, characterised in that the hydraulic coupling connections (30) are arranged on a third hydraulic reservoir (29).

8. Single-axle vehicle (E) according to one of the previous claims 2 or 3, characterised in that the first hydraulic reservoir (27) and / or the second hydraulic reservoir each have a separate heat exchange device