WO2006040055A1

WO2006040055A1 - Multipurpose vehicle, particularly a harvesting machine or other off-road vehicle

Info

Publication number: WO2006040055A1
Application number: PCT/EP2005/010742
Authority: WO
Inventors: Johann Rainer
Original assignee: Harain Verwaltungsgesellschaft Mbh & Co. Kg
Priority date: 2004-10-12
Filing date: 2005-10-06
Publication date: 2006-04-20
Also published as: DE202004015747U1; DE202005021280U1

Abstract

The invention relates to a multipurpose vehicle (30), particularly a harvesting machine or other off-road vehicle, comprising at least two frame sections (32) which are connected to each other via at least one articulation device (60), comprising a first horizontal shaft (36) of a first chassis (32) and a second horizontal shaft (40) of a second chassis (38) and at least one add-on element (42). According to the invention, at least one of the horizontal shafts (36, 40) and at least two frame sections (32) or the at least three frame sections (32) can be respectively pivoted against each other about an axis of rotation (20) which is essentially vertical or slightly inclined in relation to the vertical, said pivoting movements being coupled to each other.

Description

More than one vehicle, it is particularly useful in the art

The invention relates to a multi-purpose vehicle, in particular a harvesting machine or another off-road vehicle.

description

Particularly in agriculture, it is increasingly a requirement to spare soils and especially farmland from excessive weight loads by machinery and vehicles in order to avoid unnecessary soil compaction. For this reason, for example, harvester vehicles use large-volume wide tires or belt tape drives or crawler belt drives which, due to large contact surfaces, distribute the pressure on the ground and are suitable for being used on field crops. High demands are placed on the steering concepts for such vehicles, since they are intended to ensure the greatest possible maneuverability of the large and heavy vehicles, enable a lane-shifted driving of a front and a rear axle or a multi-row harvesting and at the same time protect the floor , In particular, in multi-purpose vehicles, which have different attachments and structures, at the same time the correct arrangements of unter¬ different components to each other at any time to be maintained.

From DE 199 58 766 A1 a harvesting or harvesting vehicle is known, the frame of which is composed of two sections, which are connected in the front region of the vehicle via a joint arrangement and pivotable about a vertical axis relative to each other. Each of the two frame sections has two trolleys each. The wheel axles of both frame sections are steerable and arranged on the wheel axle of the rear frame section chassis (wheels) are pivotable so that they can always stand parallel to the direction of travel, even if the rear frame section is oblique to the direction of travel. The front attachment of the vehicle, for example a lifting unit, is pivotable in such a way that it can protrude laterally beyond the front frame section without oblique position. In this way a track-displaced driving and harvesting is possible.

DE 39 37 124 A1 describes a working with profile tape drives

Multi-purpose vehicle, the frame of which also consists of two articulated composed of interconnected frame sections. The frame sections can be rotated at an angle to the longitudinal axis of the vehicle as well as around the horizontal plane of the rear section relative to the front section. The Kurven¬ ride is controlled by arranged between the two frame sections lifting cylinder.

Such vehicles, which are composed of two mutually pivotable Rah¬ menabschnitten bring with it the advantage that a Lenkein¬ shock is mög¬ Lich not only in the rear, but also in the front of the vehicle, which is advantageous for the maneuverability of the vehicle , At the same time, however, such a single-articulated steering system can bring about problems, since an attachment to a front frame section, for example a harvesting unit, and attachment or assembly to a rear frame section, for example a conveying or cleaning device, occur at a steering angle on the front Connecting axis of the vehicle sections by the same amount as the frame sections pivot against each other. In this way, there is a relative shift of the corresponding elements gegenein¬ other that complicate their interaction or can prevent. There is a reduction of the area in which this interaction is possible, and thus to a reduction of the space, in particular the width, for example, in a Ern¬ temaschine for conveying or cleaning facilities available, if a flow of material from the front attachment should be ensured at any time to a rear portion of the vehicle. In particular, attachment or assembly elements which are arranged in the region of the front running gear, for example, a conveyor, which runs between two wheels or belt drives, a steering angle of the front bogies a.

In practice, some attempts to circumvent the problem by a

Conveying and / or cleaning device above a front axle is angeord¬ net, but this brings the disadvantage of a considerable and leading to problems Ver¬ pollution of frame and axle parts, which are below the conveyor and Reinigungs¬ stretch, with it.

Another problem is that a steering angle, which is directly on a arranged at one end of the vehicle and outstanding attachment, for example. A lifting unit transmits, in practice can lead to significant disadvantages, in¬ the example. A compensation steering a change in a Harvesting result. task

An object of the present invention is to avoid the abovementioned disadvantages and to design a steering axle concept which, on the one hand, ensures high maneuverability of the vehicle, but at the same time makes possible a controllable directional guidance of attachments. In addition, there should be sufficient space, especially for harvesting machines, for further devices, for example for a conveyor and / or a cleaning device. None of the attachment or assembly devices of the vehicle should impair the overall steering ability of the vehicle. On the other hand, steering of the vehicle should have no or very little influence resulting from changes in direction on the functional interaction of attachments or superstructures.

This object is achieved according to claim 1 of the present invention.

A multi-purpose vehicle according to the preamble of the present invention, in particular a harvesting vehicle or another off-highway vehicle, has at least two frame sections, which are connected to one another via at least one articulated arrangement. In addition, it has a first horizontal axis of a first chassis and a second horizontal axis of a second chassis and at least one attachment or superstructure element.

Such a multi-purpose vehicle may have further horizontal axles and chassis.

As horizontal axes are referred to in the present context, the bearings of the chassis. The horizontal axes may be the axes of rotation of the chassis or of chassis components, for example, in that they are wheel axles about which the wheels rotate. However, they can also be pure bearing axes, for example by being points of contact for belt drive or other drives. The horizontal axes of the running gears can be physical axes, at the end portions of which chassis components are mounted; For example, they can be continuous axles. However, they can also be virtual axes in that they are formed only by bearing points on a common horizontal line, as is the case, for example, with a single-wheel suspension. - A -

In the present context, the term "chassis" generally includes locomotion devices that are mounted on a-physically or virtually-common horizontal axis. [Ein Ein] A chassis can accordingly have, for example, two wheels arranged on opposite ends of a wheel axle or even two In the present context, the single wheel or drive is generally referred to as "a chassis portion".

The at least one joint arrangement, which connects the at least two frame sections of the vehicle to one another, can enable a mobility of the frame sections connected to them in all spatial directions relative to one another. In particular, the frame sections in the region of the joint arrangement can execute a bending movement, that is to say a horizontal pivoting of the frame sections about a vertical axis.

According to the invention, it is provided that at least one of the horizontal axes and at least two frame sections or at least three frame sections are pivotable relative to each other about a substantially vertical or slightly inclined relative to a vertical axis of rotation, wherein the pivoting movements are coupled together.

In the present context, the term "vertical" encompasses not only the exact vertical, but also always a substantially vertical, that is to say a space direction or axis which is slightly inclined with respect to the exact vertical.This definition also expressly refers to the claims.

According to the present invention, in each case two of the frame sections can be pivotally mounted on a common vertical axis of rotation. If the vehicle is composed of more than two frame sections, a plurality of vertical pivot axes can be present, around which the at least two frame sections can be pivoted relative to one another. Alternatively, a plurality of frame sections may each be pivotally mounted on a common vertical axis of rotation.

The horizontal axes of the trolleys can each be pivotable about vertical axes of rotation, that is steerable. For this purpose, in each case a continuous, physical axis or a connecting element between suspension suspension point th be rotatable about a vertical axis. Alternatively, the trolleys can be suspended independently of one another on a virtual, horizontal axis and can each be independently rotatable or steerable. Such vertical axes of rotation of the horizontal chassis axles may coincide with vertical axes of rotation of frame sections or be arranged separately therefrom.

At least one of the vertical axes of rotation can coincide with a vertical articulated axis of the vehicle formed by the joint arrangement.

According to a preferred embodiment of the invention, the Mehr¬ purpose vehicle is composed of at least three frame sections. In this case, the at least one attachment or assembly element, the first horizontal axis and the second horizontal axis are preferably arranged on respectively different frame sections of the vehicle.

At least two of the frame sections of the vehicle can be coupled together by means of at least one pivoting device. This pivoting device can pivot the at least two frame sections which it couples together by a predeterminable angle about at least one vertical axis of rotation relative to one another.

For example. Such a pivoting device may comprise hydraulic or pneumatic cylinders. For example. For example, two steering cylinders may be arranged between two frame sections in such a way that their counteracting operation results in a pivoting movement of the frame sections directed counter to one another. Such steering cylinders are advantageously designed identically and arranged symmetrically with respect to the longitudinal axis of the vehicle between the frame sections. An arrangement of such steering cylinder at a great distance from the vertical axis of rotation or at large angles to the longitudinal axis of the vehicle allows pivoting of the frame sections with little effort. The steering cylinder can thus have small dimensions.

In addition, other types of pivoting devices are conceivable. For example. a pivoting device may be formed by sprockets or steering belts. All conceivable pivoting devices that are suitable for pivoting the

To enable frame sections can be used within the scope of the invention. The invention is not limited in this regard. According to a preferred embodiment, a multi-purpose vehicle according to the invention has a pivoting device for coupling at least three frame sections, wherein at least two of the at least three frame sections are coupled to one another by at least one further pivoting device.

Such a vehicle thus has at least two pivoting devices.

In this case, a first pivoting device couples the pivoting movements of at least three frame sections to one another. This can be done, for example, by the pivoting device allowing joint pivoting of at least two frame sections against at least one further frame section. In this case, a first frame section can be coupled directly to the at least one further frame section via the first pivoting device, for example by the pivoting device connecting these two frame sections directly to one another. A second frame section may be indirectly coupled to the at least one further frame section by being coupled to the first frame section. This coupling between the at least two jointly pivotable frame sections, that is to say, for example between the first and the second frame section, takes place, for example, and preferably via a further pivoting device, by means of which the at least two jointly pivotable frame sections can be pivoted relative to one another ,

The pivoting movements mentioned here take place, as already mentioned, in each case about vertical axes of rotation. Even in the described arrangement with several pivoting devices for coupling a plurality of frame sections, the frame sections can be pivoted about different vertical axes of rotation or alternatively about a common vertical axis of rotation which can coincide with the bending axis of the vehicle.

According to a particularly preferred embodiment of the invention, a first pivoting device permits common pivoting of a second and a third frame section against a first frame section of the vehicle, and a second pivoting device enables pivoting of the second frame section against the third frame section.

Here are a direct coupling by a first pivoting zwi¬ tween the first and the second frame portion, a direct coupling through a second pivoting device between the second and the third Rahmenab¬ cut and thereby provides an indirect coupling between the first and the third frame portion. In the present context, such a relationship is also referred to as "double coupling".

Preferably, in this embodiment, on the second frame portion a connecting or mounting element and on the third frame portion, the horizontal axis of a first landing gear is arranged.

According to the invention, different frame sections can be brought into different swing angle positions relative to one another by the effect of a plurality of pivoting devices in each case in the amount and in the direction.

Pivoting angles of frame sections coupled to one another by means of pivoting devices can influence one another.

For example. changed a first pivoting device, which allows a common Ver¬ pivoting of a second and a third frame portion against a first frame portion of the vehicle by a first pivot angle, the pivot angle between the second frame portion and the first Rahmenab¬ cut and simultaneously between the third frame portion and the first Frame section. A second pivoting device, which allows pivoting of the second frame section against the third frame section by a second pivot angle, not only changes the pivoting angle between the second and third frame sections, but also the pivoting angle between the third and first frame sections, if the second Frame section remains rigid relative to ers¬ th frame section, the first pivoting device is thus not operated. The total swivel angle of the third frame section relative to the first frame section thus results from the sum of the first and the second swivel angle, taking account of the signs (directions of rotation or swiveling).

Depending on whether the corresponding frame sections carry trolleys and / or attachment or superstructure elements, these swivel angles have an effect on a steering input and / or a bending position of the vehicle or articulation angle between vehicle attachments or superstructures. In the case of a double coupling of three frame sections as described above, in which the horizontal axis of a first chassis is arranged on the third frame section, a total steering angle of the vehicle results from the sum of the pivoting angles of the different frame sections, taking into account the pivoting directions , The total steering angle is divided into two stages. In contrast to a single articulated steering, there is a multiple articulated steering, in the specific case a double articulated steering.

The total steering angle may be greater than or less than or equal to the bending angle between the first and the second frame section. In this way, the bending angles of buckling axes between vehicle frame sections can be decoupled from the steering angles of the running gears. Vehicle frame sections can, for example, only be slightly pivoted against each other, although at the same time a strong steering angle takes place. In this way, a vehicle can be very manoeuvrable and at the same time an interaction of attachments or body parts to vehicle sections can be guaranteed. On the other hand, in the case of a strong steering angle of the running gears, a bending angle of the vehicle required for the passage of attachments or body parts between the running gears can be taken. This bend angle can be less than the total steering angle, whereby the available space for attachments or structures between the chassis increased, in particular widened.

For example. In the case of a harvesting vehicle, a material flow from a harvesting unit arranged on a front frame section can be ensured at all times via a conveying device arranged on a central frame section and / or a cleaning device towards a transport or storage device arranged on a rear frame section. There is a wide passage for this flow of material available because the different components have to perform a comparison in comparison to the steering angle lower relative pivoting each other.

Also, pivoting movements of frame sections and pivoting movements of horizontal suspension axles may be coupled to each other in a similar manner. For example. a rotation of a arranged on a first frame portion, steerable horizontal suspension axle about a vertical axis of rotation a simultaneous Pivoting a second frame portion to have a common or separate vertical axis of rotation result, and the second frame portion can additionally ver¬ pivoted independently of the horizontal axis against the first frame portion. Even in such an embodiment of the invention, the steering angle and the bending movement of the vehicle are decoupled from each other.

A coupling of the pivoting movements about the vertical axes of rotation can be done not only as described by a mechanical coupling of frame sections by pivoting devices, but also, for example, by an electronic coupling.

The different pivoting movements can over at least one

Control unit controlled. For example. If necessary, the various swivel angles can be monitored by means of sensors, and compliance with the maximum swivel angle can be ensured via the control unit. The control device can also automate compensatory steering movements which, for example, enable a substantially constant direction of travel on uneven terrain while at the same time maintaining the harvesting area.

In the following, preferred embodiments of a erfindungsge¬ MAESSEN multi-purpose vehicle will be explained, which are not intended to be limiting.

A multi-purpose vehicle according to the invention can have on at least one frame section a receiving device for a chassis mounted on a horizontal axle, which comprises at least two receiving forks opened downwards.

The running gears of a multipurpose vehicle according to the invention may comprise at least two wheels, preferably with wide tires.

The suspensions of a multi-purpose vehicle according to the invention preferably comprise at least one belt drive and / or at least one endless track drive.

In the context of the present invention, such drives preferably extend in a triangular shape with a wide support surface and the largest possible height. The space that is available between the drives for the passage of ancillary or Aufbauele¬ elements is large in this way in width and height. A drive of the chassis is preferably angeord¬ net in the range of a chassis. The drive is preferably arranged on a frame section which can be pivoted about a substantially vertical axis of rotation with a horizontal chassis axis, and here between the chassis or chassis components (for example between wheels or triangular drives). The drive should not interfere with the passage space for attachment or superstructure elements between the running gears or as little as possible. Therefore, an arrangement of the drive as high as possible above the footprint of Fahr¬ or as high as possible on arrival or superstructure elements which run between the chassis, for example. A conveyor.

The drive may comprise a hydraulic motor and / or a differential gear.

Attachments may be work equipment, eg. A harvesting device such as a lifting unit.

A structural element can be a conveyor, for example a conveyor belt, which ensures a material flow from one area of the vehicle to another area of the vehicle, for example from a harvesting device to a cleaning device and / or to a storage facility.

Such a conveyor is preferably arranged between two chassis or chassis parts, for example. Between two wheels or belt drives, and is referred to in this context as Zwischenachsband. A conveying device or an intermediate axle belt is preferably arranged on a frame section, on which the horizontal suspension axle is also arranged, and preferably runs parallel to the direction of movement of the running gear. The frame portion is preferably pivotable about a vertical axis of rotation.

A height adjustment of the conveyor is possible by connection to an attachment or superstructure element which is arranged on the corresponding frame section via a three-point lifting mechanism.

Another attachment or assembly element may be a cleaning device and, for example, comprise rotating cleaning stars.

A cleaning device can also be mounted on a frame section which can be pivoted about a substantially vertical axis of rotation and has a horizontal running gear axis. be ordered. For this purpose, this frame section can have a suitable attachment which, for example, allows a movable arrangement of the cleaning device.

The attachment or assembly element may be a collection or storage device. For example, a harvested good is transported there, collected there and possibly further processed.

In summary and with reference to a specific embodiment, which is not to be understood restrictive, the invention can be described as follows:

It is envisaged that the total steering angle of a vehicle axle is divided into two stages, which can be actuated independently of one another and which preferably take place about a common, vertical steering axle, similar to a rotary steering.

According to the invention, a further frame, here called the front frame, is mounted rotatably on a main frame of the vehicle with a transverse spar around a vertical steering axle. Double-sided steering cylinders (inner steering cylinders) move the front frame at an angle of ± α about the vertical steering axis.

Further, a front axle frame is rotatably mounted on the same vertical steering axle, which is connected via two outer steering cylinder with the front frame. With the help of the outer steering cylinder, the front frame and the front axle frame can be adjusted by an angle of ± ß to each other.

The Vorderachsrahmen is designed so that in each case a webbing drive can be accommodated in two forks formed by a total of four fork arms. The belt drives preferably run in a triangular shape.

The thus configured steering axle now allows a steering angle between the front frame and the main frame of the vehicle by driving the two inner steering cylinder by an angle of ± α. In this case, the Vorderachsrahmen, which is connected via the outer steering cylinder to the front frame, rotated by the same angle of ± α. For a further steering lock then provide the outer steering cylinder by moving the Vorderachsrahmen by an angle of ± ß. The total steering angle or angle thus results from the sum of the angles of α and β taking into account the signs. An advantage of the invention is that the triangular drives are not moved relative to each other by the choice of a central, vertical steering axle and thus in each steering position, a wide passage for a conveyor is available.

Furthermore, the separation of the steering movements ensures that the horizontal relative movement between a working device mounted on the front frame, for example a harvesting device such as a lifting unit, and a conveying device mounted on the front axle frame is small, but at the same time the overall steering angle is great. Thus, for example, during the turning process of a harvesting machine on the headland, in which, for example, a lifting unit is not in use and lifted, the total steering angle can be used to advantage.

In the blow it is during the working position, in which, for example. A harvesting device is lowered down and in operation, possible to use the steering angle between Vorder¬ frame and main frame to achieve a track offset driving front and rear axle and with the steering angle between the front frame and Vor¬ derachsrahmen the corrective steering for straight ahead or Hangabdrift auszufüh¬ ren.

Since the belt drive runs in a triangular shape and the belt drive wheels are arranged centrally above, the drive for the belt straps also lies high above their contact surface. This in turn has an advantageous effect on a conveying device lying below, in that a large space is available for this.

A conveying device, preferably a belt (also referred to as an intermediate axle belt in the present context), is preferably connected between the belt-conveyor drives via a corresponding boom in the direction of travel at the rear of the front axle carrier. The position between the belt drives is thus maintained during all steering movements and the total passage width between the belt drive can be optimally utilized.

In the forward direction of travel, the interaxle belt is articulated to a working device guided and connected via the front frame in such a way that all relative movements are compensated for one another. In a preferred embodiment, cleaning devices are subsequently arranged on the intermediate axle belt. The cleaning devices are also mounted on the boom of the front axle frame in the direction of travel at the front. This has the advantage that there is little relative movement between the interaxle belt and cleaning devices and simple, gentle material flow transitions can be displayed.

As an alternative to the triangular drives, a vehicle steered according to the invention can also have a wheel axle with wheels arranged thereon at a lower vehicle weight, wherein the conveying device can run between the wheels. A wheel axle can be used with or without additional axle steering. The described advantages and functions of Lenkach¬ senkonzeptes invention are also given in a wheel drive.

Description of an embodiment

The invention will be explained in more detail below with reference to a preferred embodiment with reference to the accompanying drawings. The example serves to illustrate the invention, but is in no way limiting. Identical and identically acting parts are designated in the figures by the same reference numerals; a multiple explanation is partly omitted.

1 shows a schematic representation of the basic structure of a vehicle according to the invention in a side view,

2 shows a schematic representation of the basic structure of a vehicle according to the invention in plan view,

3 shows a schematic representation of a detail of the steering axis of the vehicle according to the invention in plan view,

4 shows a schematic sectional view of the basic structure of a vehicle according to the invention,

5 shows a schematic sectional view of a section on the steering axis, Fig. 6 shows a schematic representation of the front axle frame alone from the front, and

Fig. 7 shows a schematic representation of the front axle frame with Laufwer¬ ken and Zwischenachsband from the front.

Fig. 1 shows a schematic representation of the basic structure of a Erntefahr¬ tool 30 (in the example of a Rübenvollernters shown) with front, two-stage steering axle 20 according to the present invention in the side view.

It can be seen that three frame sections 32 are arranged around the central, vertical steering axle 20, which is identical to the hinge arrangement 60 in the exemplary embodiment, namely the main frame 7, the front frame 8 and the front axle frame 9. On the front axle frame 9 a first chassis 34 in the form of two triangular drives 6, 6a arranged (triangular drive 6a is not visible in the illustration of FIG. 1), which are mounted on a first horizontal axis 36, namely the hinge axis 26 of the drives 6, 6a. On the main frame 7, a second horizontal suspension axle 40 in the form of a steerable rear wheel 5 and the dar¬ mounted second chassis 38 in the form of rear wheels 5a is arranged.

Furthermore, an attachment element 42 is shown, which in the direction of travel (shown by the arrow) at the front via a Dreipunkthubwerk 13 on the front frame 8 attached working device 22, in the special case, a Roder 2 ,. Further illustrated structural elements (44) are the cab 1 built on the front frame 8, the bunker 3 constructed on the main frame 7 and the engine cockpit 4 mounted above the rear axle 5. A conveying device runs between the drives 6, 6a 46 arranged in the form of a conveyor belt or Zwischenachsbandes 10. Behind this, cleaning devices 11 and an elevator 12 are arranged.

In the illustration of Figure 1 are further recognizable a first Schwenkein¬ direction 50, which is formed by inner steering cylinder 16, 17 (in the illustration, only the left inner steering cylinder 16 is visible), and a second pivoting device 52, the outer Steering cylinder 14, 15 is formed (in the illustration, only the left outer steering cylinder 14 is visible).

The main load of the harvesting vehicle 30 is supported by the front axle frame

9 and the pivot axes 26 of the triangular drives 6, 6a on the triangular drives 6, 6a off. The weight is thus distributed to the large bearing surface of the triangular drives 6, 6a.

2 shows a schematic representation of the basic structure of a Erntefahrzeu¬ ges 30 (in the example of a Rübenvollernters shown) with front arranged, two-stage steering axle 20 according to the present invention in plan view. The Fahr¬ zeug 30 is in the representation in straight ahead. It can be seen how the main frame 7, the front frame 8, the front axle frame 9 with the Dreieckslauf¬ plants 6, 6 a are arranged around the central vertical steering axis 20. The illustration of Figure 2 also shows the outer steering cylinder left 14 and right 15 and the inner steering cylinder left 16 and 17 right.

The working device 22, in the special case the Roder 2, which is connected via a Drei¬ punkthubwerk 13 to the front frame 8, and the subsequent Zwischenachsband 10 and the cleaning devices 11, in the special case cleaning stars, as well as their arrangement to each other are also visible.

Furthermore, it can be seen that the rear axle 5 is attached to the main frame 7.

Fig. 3 shows a schematic representation of a section of the two-stage steering axle 20 in plan view. In this view, the erfindungs¬ proper structure of the steering axle 20 and its function is now very clearly recognizable.

Arranged around the central, vertical steering axle 20 are the main frame 7, the front frame 8 with transverse bar 8a and the front axle frame 9 with the triangular drives 6, 6a. The Roder 2 arranged on the front frame 8 via the three-point lifting mechanism 13 is indicated. It can be seen how the Zwischenachsband 10 is articulated to the boom 9a of the Vorderachsrahmens 9 and the cleaning elements 11 are also attached to the boom 9a.

With the help of Lenkzyiinder inside left 16 and right 17, which are articulated between the cross member 8a of the front frame 8 and the main frame 7, the front frame 8 relative to the main frame 7 by an angle of ± α about the central vertical steering axis 20 moves tively become.

By attaching the steering cylinder inside left 16 and right 17 very far outside on the cross member 8 a of the front frame 8 and relatively far back on the main Very favorable leverage ratios are created which make it possible to keep the cylinders relatively small in diameter in relation to the high steering forces.

FIG. 3 also makes it clear that, during a steering movement of the front frame 8, the implement 2 connected via the three-point lifting mechanism 13 and the front derachs frame 9, which is connected to the front frame 8 via the two steering cylinders on the outside left 14 and right 15, also moves become.

By actuation of the steering cylinder outside left 14 and right 15, the zwi¬ tween the cross member 8 a of the front frame 8 and the Vorderachsrahmen 9 are introduced, the Vorderachsrahmen 9 by an angle of ± ß to Vorderrah¬ men 8 around the central, vertical steering axle 20 are moved. By far outboard steering cylinder 14, 15, these can in turn be kept small in dimensions

In the manner described, a steering movement is divided into two stages.

The total steering angle δ of the front axle frame 9 relative to the main frame 7 results from the sum of the individual steering angles α between the front frame 8 and the main frame 7 and the steering angle β between the front frame 8 and the front frame 9, taking into account the signs.

In FIG. 3, a maximum total steering angle δ is deflected to the left in the direction of travel. According to the invention, the steering angle ß should only be designed so large that sufficient steering movements for correcting the straight ahead of a machine or against a hangover drift are available. The horizontal relative movement between the working device 22, for example. The Roder 2, and the Zwischenachsband 10 can be kept small and manageable in this way. The steering angle α can then be designed as large as it allows the transfer situation to the cleaning elements 11, since, as shown in the embodiment, the working device 22, for example. The Roder 2, and the car 1 perform this steering movement with.

4 shows a schematic sectional view of a vehicle 30 with a two-stage steering axle 20 according to the invention, in which the left-hand triangular drive 6 is not shown and the front axle frame 9 is shown in section. This is the reason velvet arrangement of the main frame 7, the front frame 8 and the Vorderachsrah¬ mens 9 about the central, vertical steering axis 20 recognizable.

The articulation of the Zwischenachsbandes 10 takes place on the bearing axis 23 of the Zwischenachsbandes 10 on the boom 9a, via which a connection to the front axle 9 and thus to the steering axis 20 is made.

The connection of the working device 22, for example the Roders 2 to the Zwi¬ schenachsband 10 via the bearing point 24, at which a height guide of the Zwischenachsbandes 10 takes place. The design of the bearing point 24 is dependent on the working device 22 used and is therefore not described here in detail.

5 shows a schematic sectional view of a cutout on the two-axis steering axle 20. In the exemplary embodiment shown, the main frame 7 is designed such that the central, vertical steering axle 20 results due to a kind of triple fork, around which the shaft is still rotatably mounted Front frame 8 and the Vorderachsrah- 9 are arranged.

The Zwischenachsband 10 is disposed on the bearing axis 23. By the boom 9a, which is part of the Vorderachsrahmens 9, the mounted in the axis 23 Zwischenachsband 10 and the cleaning element 11 to each other and the Vorderachsrahmen 9 and thus also to the triangular drives 6, 6a determined in the position.

Further, it can be seen that by using a triangular drive 6, 6a whose drive 18, for example. A hydraulic motor or a differential gear, can be arranged high above the drive footprint, whereby the passage height 28 for transported on the Zwischenachsband 10 Good is very generous.

Fig. 6 shows a schematic representation of the Vorderachsrahmen 9 from the front and thus the two forks resulting from the arrangement of the four fork arms 9 b on the front axle 9. Since, according to the invention, the front axle frame 9 is mounted in the central, vertical steering axle 20, this is also a component on the front axle frame 9.

In a useful embodiment of the front axle frame 9, at least two of the fork arms 9b can be connected in a screwed manner to the front axle frame 9 be (not shown). The two outer fork arms 9b are preferably connected in a screwed manner to the front axle frame 9 in order to simplify the mounting of the three-corner drives 6, 6a.

Furthermore, the fork arms 9b may be cranked so that they lie in the region of the pivot axes 26 of the triangular drives 6, 6a (see also FIG. 7) in the shadow of the belt bands (also not shown). In this way, the space between the drives can be optimally used.

Fig. 7 shows a schematic representation of the Vorderachsrahmen 9 with Lauf¬ works 6, 6a and Zwischenachsband 10 and the drive 18 of the triangular drives 6 and 6a from the front. In the example shown, the drive 18 is a hydraulic motor or a differential that is connected to the front axle frame 9 and is as high as possible above the footprint of the drives (height of the final drive) so that a passage height 28 is possible for goods carried on the intermediate conveyor belt 10 is.

The drive 18 and the pivot axes 26 of the triangular drives 6, 6a may be on a plane or axis, but need not. It makes sense that the pivot axis 26 of the triangular drives 6, 6a below the drive 18 and the inner fork arms 9b are designed for a drive through, as this results in more favorable support angle for the drive torque and a variety of drive concepts can be connected.

From the inventive arrangement of the triangular drives 6, 6a further results in a large passage width 29, which is used here by the Zwischenachsband 10.

Summary description of the embodiment

To a central, vertical steering axis 20 are each rotatably mounted

Main frame 7, a front frame 8 and a front axle frame 9 attached. For a specific positioning of the elements main frame 7, front frame 8 and Vor¬ derachsrahmen 9 to each other, each adjusting or steering cylinder are ange¬ as follows ange¬: The steering cylinder inside left 16 and steering cylinder inside right 17 connect the main frame 7 and the front frame 8, which can be moved around the steering axis 20 to each other by the steering angle α. Furthermore, the front axle frame 9 via the steering cylinder outside left 14 and steering cylinder outside right 15 connected to the Vorder¬ frame 8, which in turn the Vorderachsrahmen 9 to the front frame 8 about the steering axis 20 and the steering angle ß moves and can be positioned. As a result, a total steering angle δ results for the front axle frame 9 relative to the main frame 7 from the sum of the steering angles α and β. The steering angles α and β can each be positive or negative in each case, ie be deflected in the direction of travel to the left or to the right. The total steering angle δ results from the sum of the steering angles (α + β) taking into account the respective signs.

Furthermore, the front axle frame 9 is configured such that 9 four front forks 9 bifurcation for the two Dreiecks¬ drives 6, 6a result from the four fork arms. The triangular drives 6, 6a are each mounted for receiving the longitudinal inclination of the drives rotatably about a pivot axis 26 in the Gabel¬ arms 9b of the front axle frame 9.

The steering axle concept according to the invention further distinguishes that by selecting the drive form as a triangle, the drive 18 of the triangular drives 6, 6a can be mounted high above the drive footprint.

In summary, the following aspects of the exemplary embodiment are emphasized again:

The invention comprises a two-stage steering axle concept for harvesting machines, for example for self-propelled sugar beet harvesters and other off-road vehicles, in which a main vertical frame (7), a front frame (8) is rotatably mounted about a central, vertical steering axle (LAV). and a front axle frame (9) are attached. Furthermore, for targeted positioning of the elements main frame rear (7), front frame (8) and front axle frame (9) to each other each adjusting or steering cylinder attached as follows: The steering cylinder inside left (16) and steering cylinder inside right (17) connect the main frame behind (7) and the front frame (8), which can be moved around the steering axis (LAV) to each other by the steering angle (α). Furthermore, the front axle frame (9) via the steering cylinder outside left (14) and steering cylinder outside right (15) connected to the front frame (8), which again um¬ the front axle frame (9) to the front frame (8) about the steering axis (LAV) and the steering angle (ß) can be moved and positioned. The result is for the Vorderachsrahmen (9) relative to the main frame behind (7) a total steering angle (δ) of the sum of the steering angle (α) and (ß). The steering angles (α) and (β) can each be positive or negative in each case, ie they can be deflected to the left or right in the direction of travel (FR). The total steering angle (δ) thus results from the steering angles (α + β) taking into account the respective signs. Furthermore, the front axle frame (9) is designed such that two receiving forks for two triangular drives (6) and (6a) result from the four fork arms (9b) of the front axle frame (9). The triangular drives (6) and (6a) are in each case rotatably mounted about the articulation triangle drive (D) in the fork arms (9b) of the Vorderachsrahmens (9) for receiving the Längs¬ inclination of the drives. Furthermore, the steering axle concept distinguishes that the drive of the triangular drives, eg hydraulic motors or differential (18), can be mounted high above the runningway contact surface at a distance (HA) through the choice of the drive form (triangle).

In a harvester with a two-stage steering axle concept according to the present invention, an intermediate axle belt (10) in the direction of travel (FR) at the rear, via the boom (9a) on the front axle frame (9) rotatably mounted about the bearing axis Zwischenachsband (A). For height guidance of the Zwi¬ schenachsbandes (10) in the direction of travel (FR) front, it is hinged at a bearing Zwi¬ schenachsband on Roder (B). Characteristic of the bearing point Zwachsachsband on Roder (B) is that it is designed so that there is no restriction kung for the steering angle (ß), where in steering movements in the horizontal relative movement between a Roder (2) and a Zwischenachsband (10) statt¬ finds.

A harvesting machine with a two-stage steering axle concept according to the present invention has a cleaning device (11), here cleaning stars, following the intermediate axle belt (10), which in turn, in the direction of travel (FR), again on the correspondingly designed boom (9a) of the front axle frame (9). is so movably ge outsourced that the steering angle (α) and (ß), and thus the total steering angle (δ) are not limited according to their interpretation.

A harvester with two-stage steering axle concept according to the present

Invention may instead of the two triangular drives (6) and (6a) have a wheel axle not described in detail here with or without additional axle pivot steering. The features of the invention disclosed in the above description, the drawings and the claims can be of importance both individually and in any desired combination for the realization of the invention in its various forms. The invention is not limited to the above Ausführungsbei¬ games. On the contrary, a large number of variants and modifications are conceivable that make use of the idea according to the invention and therefore also fall within the scope of protection.

LIST OF REFERENCE NUMBERS

1 cabin

2 Roder 3 bunkers

4 engine cockpit

5 rear axle steerable 5a rear wheels

6 triangular drive left 6a right triangular drive

7 first frame section or main frame

8 second frame portion and front frame 8a cross member of the front frame

9 third frame portion or front axle 9a boom on Vorderachsrahmen

9b fork arms on the front axle frame

10 intermediate axle belt

11 cleaning device

12 Elevator 13 Three-point hoist

14 steering cylinder outside left

15 steering cylinder outside right

16 steering cylinder inside left

17 steering cylinder inside right 18 drive

20 steering axle vertical

22 work equipment

23 Bearing axle intermediate axle - front axle frame

24 Bearing point intermediate-axis belt - working device 26 Anlenkachse of the triangular drives

28 passage height

29 passage width

30 harvesting vehicle

32 frame section first chassis first horizontal axis second chassis second horizontal axis add-on or superstructure element conveyor first swivel device second swivel device Joint arrangement

Claims

P at a d e p o rt

1. Multi-purpose vehicle, in particular harvesting vehicle (30) or other gelände¬ common vehicle having at least two frame sections (32) which are interconnected via at least one hinge assembly (60) having a first horizontal axis (36) of a first chassis (34 ) and a second horizontal axis (40) of a second chassis (38) and with at least one attachment or assembly element (42), characterized in that at least one of the horizontal axes (36, 40) and at least two frame sections (32) or that at least three frame sections (32) are each pivotable relative to each other about a substantially vertical or slightly inclined relative to a vertical axis of rotation (20), wherein the pivoting movements are coupled together.

2. Multi-purpose vehicle according to claim 1, wherein in each case two frame sections (32) are pivotally mounted on a common vertical axis of rotation (20).

3. Multi-purpose vehicle according to claim 1, in which a plurality of Rahmenab¬ sections (32) are pivotally ge to a common vertical axis of rotation (20) superimposed.

4. Multi-purpose vehicle according to one of the preceding claims, in which at least one of the horizontal axes (36, 40) of the chassis (34, 38) and at least two frame sections (32) pivotable about a common vertical Drehach¬ se (20) are.

5. Multi-purpose vehicle according to one of claims 1 to 3, wherein at least one of the horizontal axes (36, 40) of the chassis (34, 38) and at least two frame sections (32) are pivotable about separate vertical axes of rotation.

6. Multi-purpose vehicle according to one of the preceding claims, wherein the at least one mounting or structural element (42), the first horizontal axis (36) and the second horizontal axis (40) at each different Rah¬ menabschnitten (32) are arranged.

7. Multi-purpose vehicle according to one of the preceding claims, in which at least one of the vertical axes of rotation (20) coincides with a hinge arrangement (60) formed by the substantially vertical articulated axis.

8. Multi-purpose vehicle according to one of the preceding claims, wherein at least two frame sections (32) by means of at least one Schwenkeinrich¬ device (50) are coupled together by the effect of at least two frame sections (32) by a predetermined angle by at least one ver Tical axis of rotation (20) are mutually pivotable.

9. Multi-purpose vehicle according to claim 8, which has at least one Schwenkeinrich¬ device (50) for coupling at least three frame sections (32), wherein at least two of the at least three frame sections (32) by at least one further pivoting device (52) are coupled together ,

10. Multi-purpose vehicle according to claim 8 or 9, wherein at least one

Swiveling device (50) allows joint pivoting of at least two frame sections (32) against at least one other frame section (32).

11. Multi-purpose vehicle according to claim 10, which comprises a first pivoting device (50) for common pivoting of a second (8) and a third Rah¬ menabschnitts (9) against a first frame portion (7) and a second pivoting means (52) for pivoting the second frame portion (8) against the third frame portion (9).

12. Multi-purpose vehicle according to claim 11, wherein at least one mounting or mounting element (42) on the second frame section (8) and on the third

Frame portion (9), the horizontal axis (36) of a first chassis (34) is arranged.

13. Multi-purpose vehicle according to one of claims 8 to 12, in which unterschied¬ Liche frame sections (32) under the action of several pivoting devices (50, 52) in each case the amount and the direction for different Schwenk¬ turn each other.

14. Multi-purpose vehicle according to claim 13, wherein a total steering angle of the vehicle (30) from the sum of the pivot angle of the different frame sections (32), taking into account the pivoting directions.

15. Multi-purpose vehicle according to one of claims 8 to 14, wherein the at least one pivot means (50, 52) comprises a hydraulic or pneumatic cylinder.

16. Multi-purpose vehicle according to one of the preceding claims, in which the pivoting movements are coupled together via at least one control unit.

17. A multi-purpose vehicle according to one of the preceding claims, which has at least one frame section (32) a receiving device for a mounted on a horizontal axis (36, 40) landing gear (34, 38) which comprises at least two downwardly open receiving forks.

18. Multi-purpose vehicle according to one of the preceding claims, wherein the trolleys comprise at least one belt drive (6, 6a).

19. Multi-purpose vehicle according to one of the preceding claims, wherein the trolleys comprise at least one crawler track drive.

20. Multi-purpose vehicle according to one of the preceding claims, wherein the trolleys comprise at least one extending in triangular form drive (6, 6a).

21. Multi-purpose vehicle according to one of the preceding claims, in which the running gears comprise wheels (5a).

22. Multi-purpose vehicle according to one of the preceding claims, wherein a drive (18) of at least one chassis (34) on a pivotable about a substantially vertical axis of rotation (20) frame portion (9) with horizont¬ tal suspension axle (36) is arranged ,

23. Multi-purpose vehicle according to claim 22, characterized by an arrangement of the drive (18) high above the footprint of the chassis (34).

24. Multi-purpose vehicle according to one of the preceding claims gekennzeich¬ net by an arrangement of the drive (18) high above a mounting or Auf¬ component (42) which extends between chassis components.

25. Multi-purpose vehicle according to one of the preceding claims, wherein the drive comprises a hydraulic motor.

26. Multi-purpose vehicle according to one of the preceding claims, wherein the drive comprises a differential gear.

27. Multi-purpose vehicle according to one of the preceding claims, which as An¬ component (42) has at least one working device (22).

28. Multipurpose vehicle according to one of the preceding claims, wherein the at least one working device is a harvesting device (2).

29. Multipurpose vehicle according to one of the preceding claims, which as An¬ building or structural element (42) has at least one conveyor (46).

30. Multi-purpose vehicle according to claim 29, wherein the conveyor (46) is a conveyor belt (10).

31. Multi-purpose vehicle according to claim 29 or 30, characterized by an arrangement of the conveyor (46) between two chassis parts.

32. Multi-purpose vehicle according to one of claims 29 to 31, characterized by an arrangement of the conveyor (46) on a pivotable about a substantially vertical axis of rotation (20) pivotable frame portion (9) with hori¬ zontal suspension axle (36).

33. Multi-purpose vehicle according to one of claims 29 to 32, wherein the För¬ dereinrichtung (46) parallel to the running direction of at least one chassis (34, 38) is arranged.

34. Multi-purpose vehicle according to one of claims 29 to 33, wherein the För¬ dereinrichtung (46) by connection to a mounting or superstructure element (42), which is arranged via a three-point linkage (13) on the corresponding Rahmenab¬, height adjustable ,

35. Multi-purpose vehicle according to one of the preceding claims, which has at least one cleaning device (11) as An¬ building or structural element (42).

36. Multi-purpose vehicle according to claim 35, characterized by an arrangement of the cleaning device (11) on a substantially vertical

Rotary axis (20) pivotable frame portion (9) with horizontal Fahrwerk¬ axis (36).

37. Multi-purpose vehicle according to one of the preceding claims, which as An¬ building or structural element (42) has a collecting and / or transport device.