Frame for special vehicles

The invention relates to a chassis for special-purpose vehicles, with height-adjustable suspension, having the driver remotely controllable vertical actuators for changing the ground clearance, the suspensions are provided with remotely controllable by the driver horizontal actuators for changing the track while driving.

Various methods and devices are known from the prior art in order to adjust the track width and the amount of special vehicles.

An adjustable in height chassis is made of <patcit id="pcit0001" dnum="DE10320291A1"><text>DE 103 20 291 A1</text></patcit> known. The therein disclosed hydraulic suspension system consists of a central hydraulic unit and vertically arranged hydraulic cylinders for height adjustment of the suspension. Using this hydraulic suspension system, the load of the vehicle when driving on slopes or in curves can always be divided equally between the wheels of the vehicle. Furthermore, uneven ground, especially balanced on the hillside while driving and the ride height to be changed.

Next describes the <patcit id="pcit0002" dnum="US6311795B1"><text>US 6,311,795 B1</text></patcit> an arrangement for raising and lowering of a bogie for agricultural vehicles, in which the vehicle is configured such that both the track and the ground clearance is variable. The change in the gauge can take place, inter alia, setting units, where the wheels of the vehicle are secured. The adjustment in height can be carried out via hydraulic actuators whose stroke movement results in an adjustment of wheel axle, whereby the ground clearance of the vehicle is varied. The adjustment of the track width alternatively by pivoting arm on which the wheel supports are arranged.

From the <patcit id="pcit0003" dnum="US6454294B1"><text>US 6,454,294 B1</text></patcit> is an agricultural vehicle is known, which is adjustable in ride height and the track gauge. The change in the ground clearance is carried out via indirect acting hydraulic cylinders that act pretending to a Verstellgestell. The adjustment of the track via an interlocking sliding adjustment system, which is also variable via hydraulic actuators.

The <patcit id="pcit0004" dnum="US3236324A"><text>US 3,236,324 A</text></patcit> describes an arrangement for an agricultural vehicle which is variable in its track width and ground clearance. The vehicle in this case has a chassis having a platform, are arranged on the individually controllable suspension. The change of gauge takes place one or both sides with the aid of hydraulic cylinders, which can be extended by applying pressure and so perform a track widening during the forward or backward movement. The adjustment of the ground clearance is also done with the help of pressurizable hydraulic cylinders, which then change in their length.

The <patcit id="pcit0005" dnum="EP1685988A1"><text>EP 1685988 A1</text></patcit> discloses a suspension system for an agricultural vehicle, in particular for an agricultural sprayer, with a vertically arranged support tube assembly having an axially movable and rotatable mounting, a fixed at the lower end of the support tube suspension, a rotation about the support pipe axis arranged steering arm, the support tube relative to the steering arm is axially displaceable, a holder and a spring body, which is accommodated between the upper end of the support tube and the holder, and a damping for the wheel suspension provides, when the support tube is moved axially in the support tube bearing. It is in particular an air suspension that allows only a very limited height adjustment on the applied air pressure. Furthermore, the agricultural vehicle or the chassis of which has yet to an adjustment of the track width.

The <patcit id="pcit0006" dnum="DE102007050252A1"><text>DE 10 2007 050 252 A1</text></patcit> discloses a leveling system of a motor vehicle. Here, each wheel of the motor vehicle is associated with a fluid-actuated, in particular designed as a spring strut leveling element, which can be customized and controlled, so that the structure of the vehicle can always be kept in a horizontal position. A corresponding control program with associated sensors is also provided.

From the subsequently <patcit id="pcit0007" dnum="DE102007053906"><text>DE 10 2007 053 906</text></patcit> is a chassis known for special vehicles with height-adjustable suspension, having the driver remotely controllable vertical actuators for changing the ground clearance, the suspensions are provided with remotely controllable by the driver horizontal actuators for changing the track while driving.

Object of the invention, a chassis according <patcit id="pcit0008" dnum="DE102007053906A1"><text>DE 10 2007 053 906 A1</text></patcit> indicate with the gentlest possible treatment of agricultural crops and also be driven on public roads and streets is possible without time-consuming conversions need to be carried out, whereby a desired orientation of the chassis base frame is guaranteed in any terrain, so that any structures and / or equipment is oriented in a desired orientation.

This object is achieved with a chassis according

<patcit id="pcit0009" dnum="DE102007053906A1"><text>DE 10 2007 053 906 A1</text></patcit>Wherein the height-adjustable wheel suspensions are individually controllable and adjustable. The special vehicle can then drive to multidimensional inclined slopes or ramps, with the individual height-adjustable suspension can be individually controlled so as to always align the vehicle in a desired position on the hillside. Here, in particular, be particularly preferably the horizontal position of the special vehicle, as in a horizontal orientation of the special vehicle, the entire weight is distributed to all individual wheels. For example, this is four wheels. Of course, a configuration with more than four wheels and possible on the application conditions is also useful. In particular, with heavy loads, the weight is hereby distributed even better on the slope, so that an excessive wheel load and slippage or excessive sinking of the special vehicle is prevented. A drive diagonally across a slope is possible with this embodiment, so that a multi-dimensional gradient can be compensated. In particular, the individual control of the individual height-adjustable suspension is particularly advantageous if it deep unevenness in the lane indicates the slope to be traversed, which can be compensated by the individual control of the individual height-adjustable suspension.

The fact that the height-adjustable suspension each page by page, namely the adjustable suspension in the direction of travel on the left side of the special vehicle and the height-adjustable suspensions are in the direction of travel on the right side of the special vehicle, controllable and adjustable, are rides on the hillside substantially perpendicular to the gradient of the slope easy to implement, since that total weight of the special vehicle is distributed evenly on all wheels and an almost horizontal alignment of the special vehicle and the superstructure is possible on it. The driver of the special vehicle no longer needs to specifically take care of the hillside and permanently monitor the vehicle on a possible overturning on slopes. The driver can rather take care of the actual tasks of his work.

If the height-adjustable suspension namely are in pairs, the height-adjustable suspension controlled and adjustable at the front of the special vehicle and the height-adjustable suspension in the direction of travel at the rear of the special vehicle, the special vehicle can travel especially on a slope, the special vehicle and in particular the superstructure horizontal are aligned. The bodies on the side hangabwärtigen can by raising the hangabwärtigen vehicle tail and corresponding leveling have a much greater distance to the surface of the slope, whereby any attachments or equipment of special vehicle over obstacles be performed. This equipment or attachments can be, for example spraying systems which are used for pest control or for fertilizing, which are then passed over upstanding plants without damage occurs to this.

In particular, in the design of the special vehicle with the corresponding vertical actuators destruction of growing plants on a slope is effectively prevented. The natural vegetation is also directed at the slope vertically upwards, so that would be knocked down when traveling through an appropriate slope passage with standard vehicles, the plants downslope of the wheels and the chassis or destroyed. The wheels would extend due to the vertical formation on the surface of the slope in these plants and destroy them. By using the invention adjustable special vehicle is not affected in parallel alignment of the wheels to the cultivated plants of the plant canopy.

Characterized in that the special vehicle has superstructures, wherein at the special-purpose vehicle and / or the superstructure an equipment is arranged, said equipment to one along the traveling direction oriented axis of rotation via a Winkelverstellaufnahme through an angle is arranged to be rotatable, the equipment may have a different angle, so that the equipment can be aligned parallel to the slope, although the vehicle is horizontal, ie at an angle α to the slope, aligned. Thus the weight of the special vehicle can be distributed evenly to all wheels while the equipment are performed in parallel to the slope. For example, as described above, this equipment be spraying, which can only work sensibly and efficiently when they have a uniform distance to the ground or to the objects to be sprayed.

When a central control unit is provided for individual control and / or paginated control the height adjustable suspension and / or the Winkelverstellaufnahme, the entire control of a central point is controlled. At the same time, the central control unit for this purpose also include a display on which the driver can read the inclination. Warnings, if the inclination should not exceed the maximum allowable slope once, may also be displayed. It can be done, an automatic adjustment while driving, so that the special vehicle orients itself permanently. For this purpose it is particularly advantageous if the central control unit has tilt sensors.

If the suspensions are provided with remotely controllable by the driver horizontal actuators for changing the gauge while driving, this allows the adjustment of the track width of the agricultural culture, are grown in crop plants such as corn, canola or sunflowers in different row spacings. In addition, the widening of the gauge has the advantage that a greater ground clearance can be adjusted without the stability of the vehicle would be dangerously reduced. This allows the use of an inventive vehicle equipped even with very high-growing crops, such as corn and sunflower, as the ground clearance can be chosen large enough.

The remote-controlled adjustment of the track width and the ground clearance and the drive to align the vehicle to the terrain, such as tilt, etc. of the cab means for the user a lot of work, while the work safety is increased. It must not hazardous installation work is carried out locally in order to change the height, width, or tilt the chassis. Also, the use of presses, bolts and a torque wrench is not necessary. The risk of accidents and related losses are reduced, and the driver does not need skills for work as remodeling contractor. As to the business point of view, the work can be much more economically performed by less skilled workers and in less time.

After work both ride height, track width and an individually set inclination can be easily reduced again to public paths and roads traveled may. Legally, the width of a vehicle to 2.5 m and the height is limited to 4.0 m. These values ​​can be met easily. To change the track, the ground clearance and / or the inclination of the driver does not even need to get out. In further use, track, ground clearance and inclination can be adjusted again to very different conditions, without the need for special preparations for it.

In a preferred embodiment, the actuators for the actuating units are designed as hydraulic cylinders. Hydraulic units are reliable, widely available and inexpensive to obtain. Usually here coming into question special vehicle is already equipped with a hydraulic system, so that only small additional costs for implementation of the invention arise.

To support the vehicle weight sliding guide profiles made of steel are reciprocally provided which are transverse to the direction of load by the vehicle weight and thus relieve the actuators, which are loaded only with forces in the adjustment.

If the track width is adjustable in the range between 1.8 m and 3.0 m, the legal regulations for driving on public roads can be maintained in the lower part of the adjustment on the other hand is a sufficient margin for adjusting the track width of the planting distances of agricultural crops available. In this way, can always find a track width at the roll all the wheels between two rows of plants and do not damage the plants.

When a device to display the current track is provided on the platform, preferably in the form of a computer terminal, the operator can see the currently selected track quite convenient and adjust, if necessary, to another desired value, for example, for driving on public roads or for Use of motor vehicles a maize field, of which the distance of the rows of plants is known. A test or manual tuning of the gauge is not required.

In the invention, a control switch for track width adjustment is provided on the platform, preferably at a computer terminal. The arrangement of the control switch, the driver can, without the driver's cab to leave carry, while driving the vehicle, the track width adjustment, because without a slight forward speed can not be made the track adjustment. The start button will be easily arranged at the computer terminal, which also includes the gauge display.

If the gauge set is preselected, in particular by selecting a track width of several fixed predetermined values, the operator does not need to pay constant attention to the changing values, to interrupt the tracking adjustment at the right moment. Rather, the desired value by the measure selected, then the control switches are actuated until the desired gauge has set.

Because an adjustment of the gauge at standstill of the wheels is not possible and eventually can lead to damage, proposes a development of the invention that a lock is provided to prevent a change of gauge at standstill of the wheels, preferably in the form of a software-based or hardware-based electronic lock in a control device for controlling the horizontal actuators. Such barrier can be realized particularly easily when the control device includes a programmable microprocessor. The control device must then be connected only with one or more rotation sensors for detecting the rotational movement of the wheels. Such rotary sensors are usually already present for detecting the vehicle speed and therefore need not be installed separately. Then the realization of the electronic lock is limited to insert a so considered program in the control software.

In the invention, the suspensions are provided with a mechanical lock for the track, preferably in the form of an eccentric lock. The mechanical locking the set track width is kept constant without the horizontal actuators are charged or have to be activated. An unintentional adjustment of the track width is thus prevented.

In a preferred embodiment the mechanical lock can be actuated hydraulically and remotely controllable from the driver. For locking or releasing the lock of the driver therefore does not need to leave the platform. Hydraulic actuation in turn has the advantages already mentioned above.

In the invention, the wheels of a driven axle are each provided with a hydraulic hub motor, preferably two driven axles are provided with four wheels. A hydraulic motor can be realized at present anyway hydraulic system with little effort. The embodiment form as hub motor accounts for drive shafts and differential. In its simplest embodiment, the chassis has four wheels, which are preferably all driven for safe transportation in difficult terrain.

In an embodiment of the vertical parking units is provided that these are designed in the form of two in the direction of travel one behind the other are arranged vertically oriented hydraulic cylinders. In this way, can be dispensed with more suspension agents, especially the handlebars. Only the steered wheels must be pivotally mounted.

In an embodiment of the invention provides that a selective ground clearance, conditionally be adjusted by the inclination, between 0.3 m and 4.0 m. For this purpose a minimum distance to the ground can be preselected, so that this distance is maintained in any case at thinnest point. The highest ground clearance of 4.0 m is sufficient to order traveled corn or sunflower crops on an inclined slope can, without damaging the plants. With a ground clearance of 1.15 m, a safe driving on public roads is possible without the legal maximum height of the vehicle is exceeded and without the risk of tipping over.

has a display device to display the current ground clearance at the platform, preferably in the form of a computer terminal, a control switch for height adjustment on the driver's cab, preferably at computer terminal, and the Vorwählbarkeit of ground clearance, in particular by selecting from several preset values ​​the above in connection with the track width adjustment described advantages.

To increase security, and in particular for preventing the tilting of the vehicle is provided that a drive control device has a speed limiter, which limits with a larger ground clearance than a predetermined limit value the speed of travel of the chassis to a predetermined value, preferably, with a larger ground clearance than 1 3m speed electronically limited to 15 km / h.

In an embodiment of the invention, an air suspension is provided which comprises a load controller that keeps the ride height constant at variable load weight. This ensures that the ground clearance is always constant having the preselected value, even when the vehicle has taken up load, for example spraying. Similarly, the ground clearance remains constant when the vehicle, for example, sprayed in the operation in the field and the spray loses load weight.

In an embodiment of a front axle with steerable wheels, a pendulum-mounted front axle is provided which is connected via a centrally arranged pivot bearing to the chassis and provided with an anti-roll bar. To ensure the function of the front axle also when adjusting the track width, the front axle to the steering of the front wheels is provided with a tie rod, which has a hydraulic cylinder which synchronously used for longitudinal adjustment of the track rod for adjusting the track width of the front wheels.

The chassis of the invention is further improved if the wheels are provided with Pflanzenabweisern, the surrounding of a the front of the wheels cladding metal or plastic, which tapers towards the front. This panel ensures that possibly be pushed into the area of ​​the wheels protruding parts of plants when passing to the side and not run over. The plant material is thus protected.

An exemplary embodiment of the chassis according to the invention for special vehicles with the accompanying drawings in detail.

In which:<dl id="dl0001"><dt>Fig. 1</dt><dd>a schematic representation of a special vehicle on a slope;</dd><dt>FIG. 2</dt><dd>a perspective view of a chassis according to the invention in the state with minimum track width and ground clearance;</dd><dt>Fig. 3</dt><dd>a perspective view of a chassis according to the invention in the state with maximum track width and ground clearance; </dd><dt>Fig. 4</dt><dd>a partial view of a rear suspension in the retracted state;</dd><dt>Fig. 5</dt><dd>a partial view of a rear suspension in the extended state;</dd><dt>Fig. 6</dt><dd>a perspective view of a chassis according to the invention Vorderachsbereichs in the retracted state;</dd><dt>Fig. 7</dt><dd>a sectional view of a chassis Vorderachsbereichs invention in the retracted state with minimum track width</dd><dt>Fig. 8</dt><dd>a sectional view of a chassis Vorderachsbereichs invention in the extended state with maximum track width.</dd></dl>

<figref idrefs="f0001">Fig. 1</figref> shows a special vehicle 1 on a slope G. The special vehicle 1 comprises a chassis 2 with a horizontal actuator 23 and a suspension 21st The suspension 21 includes, a vertical actuator 22, at the respective lower end a wheel 3 of the special vehicle is located

Further, the special vehicle at 1 structures. 4 These assemblies 4 include the motor assembly, the cab and corresponding vehicle-specific devices such as aggregates or the like. Further, the special vehicle 1 even equipment 5 on. This equipment 5, for example, as in the illustrated embodiment, be spraying a large working width, for example, to fertilize plants or conduct a pest on these plants. For such a sprayer in particular include a reservoir, which is placed on the special vehicle and a pump assembly, and an extendable, if required, or -klappbares Spritzgestänge with spray nozzles.

The special vehicle 1 moves in the direction of travel F, ie in the plane of projection <figref idrefs="f0001">Fig. 1</figref> inside, on a slope G, which is substantially perpendicular to the direction of travel F a slope with an angle α having. The site is on the left side L higher than on the right side R. This slope gradient would lead the special vehicle, which has a considerable weight, let slip on a slope or the overturning of the special vehicle normally in the direction of travel F. To counteract this tipping over or sliding off, the special vehicle 1 in addition to the horizontal actuator units 23 on the chassis 2, the vertical actuators 22, which are individually controllable α corresponding to the angle. By far out driving single or in pairs moving out of vertical actuators 22, the vehicle can be aligned horizontally, despite the slope ride, so tipping or slipping is prevented on a slope. This is in particular effected by the same prevailing loads on the individual wheels, so that the focus is held in the center of the vehicle.

However, when the special vehicle 1 an equipment 5 corresponding to a spraying system, as shown here, comprises the spraying equipment could not operate efficiently and save resources because not everywhere prevails a uniform distance to the information held on the slope plant P. The plants on the slope P G would be so covered with varying intensity of chemicals, fertilizers or pesticides, which would lead to a significant negative impact on plant growth and harvest. In order to prevent such economic damage to the stock of plants P now the spray boom, also rotated α at an angle, so that the spray boom and the slope G parallel are aligned. This ensures that over the entire operating range of the equipment 5, there is a uniform distance to the slope or to the plants P G.

Another advantage of the horizontal alignment of the special vehicle is the associated vertical orientation of the vertical adjusting elements 22 and the wheels 3. By this approximately vertical orientation of the vertical components of the chassis 2 and the wheels 3, the stock of plants P is protected. Since the plants themselves on a slope G vertically skyward grow, damaging the plants P would probably be when driving on a slope G without compensating a slope. The wheels and parts of the chassis 2 would parts of the plants P over or bypassed, so that at least in the ranks right R left wheels 3 L and right R right wheels 3 R plants P depressed and would simply run over. This would cause significant economic damage, which can be avoided with the special vehicle according to the invention.

In the <figref idrefs="f0002">Figs. 2 and 3</figref> is shown on agricultural crops, a chassis 2 for 1 special vehicles, in particular for use in agriculture, for example, as injection vehicle for applying pesticides. The respective configuration (equipment 5) for the chassis 2, for example, a tank and retractable arms for dispensing the spray, are in the<figref idrefs="f0002">Figures 2 and 3</figref> not shown.

The chassis 2 shown has four suspensions 21, with which both the height of the chassis and thus its ground clearance 70 and the track 71 of the wheels 3 is adjustable. With the help of the inventive design allows the track 71 between 1.8 m (see<figref idrefs="f0002">Fig. 2) and 3</figref>, 0 m (see <figref idrefs="f0002">Fig. 3</figref>) set to. The setting is done by means of electro-hydraulic means, is provided for displaying the current track on the platform 6, a display device not shown.

The display is in the form of a computer terminal, which is also provided with a control switch for remote track width adjustment by the driver. The computer terminal is connected to a control unit, preferably a computer, via which the electro-hydraulic adjusting units can be controlled. In the computer a plurality of predetermined values ​​for track widths are stored, so that the driver only needs to select an appropriate gauge on the computer terminal. In addition, the driver can enter any value for the track in the computer terminal. Of course, the track width adjustment is directly vornehmbar also by means of the control switch, the driver or an assistant observes the wheels in order to determine when the desired track is reached 71st

Since the track width adjustment is only possible during the journey, an electronically realized lock ensures the control device that the adjustment of the track width is 71 blocks at standstill of the wheels. 3

How best in the <figref idrefs="f0003">Fig. 4 and Fig. 5</figref> recognizes, each suspension 21 is provided with two vertical actuators 22, which are arranged in driving direction F after the other, and consist of vertically arranged hydraulic cylinders. At the bottom of the vertical actuators 22 are each a hydraulic wheel motor 31 is fixed, which carries the respective wheel third In the present embodiment, four wheel hub motors 31 are provided at each of the four wheels 3, so that all the wheels 3 both "axes" are powered on.

To change the ground clearance 70, the hydraulic cylinders of the vertical actuators 22 are extended on all four wheel suspension 21, so that the chassis 2 moves generally upwardly. It is a maximum displacement path 20 (see<figref idrefs="f0003">Fig. 5</figref>) Of 0.85 m available.<ul><li><figref idrefs="f0003">Fig. 4</figref> shows the state with fully retracted vertical actuators 22, wherein the ground clearance of 1.15 m is obtained.</li><li><figref idrefs="f0003">Fig. 5</figref> shows the state with fully extended vertical actuators 22, wherein the ground clearance of 2.0 m is achieved.</li></ul>

As with the horizontal adjustment of a display device for displaying the ground clearance 70 is provided at the driver's cab 6, namely in the above-mentioned computer terminal, which is not shown in the drawings. Also, a control switch for remote controlled height adjustment by the driver from the driver's cab 6 from is provided at the computer terminal. This can choose between predetermined, computer-stored values ​​for ground clearance, or a value for the ground clearance 70 type directly or the control switch long operate until the desired ground clearance is achieved 70th

About the computer terminal and terrain inclinations can be entered, so that the special vehicle is driven with its vertical actuators 22 so that a desired orientation of the vehicle, is preferably horizontal, achieved. In this case, the respective currently driven direction to the slope to be considered when setting the vertical actuators, for example, four different height settings can be set at a diagonal drive on a slope in order to align the vehicle horizontally. For this purpose it is also possible that there is provided a measuring device for the spatial orientation of the vehicle itself, with changes in the measured orientation appropriate countermeasures is immediately given by individual variation of height adjustment of the vertical actuators.

Furthermore, it is realized in the said onboard computer a drive control device having a speed limitation. In the case that the ground clearance 70 has a larger value than a predetermined limit, the overspeed governor causes the driving speed of the chassis is limited to a predetermined value also. In the present case the driving speed is electronically limited to a maximum of 15 km / h when the clearance 70 is greater than 1.3 m.

How best in the <figref idrefs="f0002 f0003">FIG. 2 to FIG. 5</figref> recognizes the chassis is provided with an air suspension, which consists of four air spring units 24 and a pneumatic supply unit, not shown. The air spring units 24 are also connected to a control device, which is housed in the said onboard computer. Moreover, in the figures not shown load controller are provided which have sensors for the ground clearance 70 and the air spring units 24 each driving so that with changing the load weight, a constant ground clearance 70 is produced.

How best to <figref idrefs="f0003">Fig. 6</figref> detects a pendulum-mounted front axle 28 is provided which is connected via a centrally arranged pivot bearing 29 to the chassis 2 and having a Querstabilistator 25th

For the horizontal adjustment in the adjustment direction 72, each axis two horizontal actuators 23 which by way of example for the front axle 28 in <figref idrefs="f0004">FIGS. 7 and Fig. 8</figref> are shown in detail. Each horizontal adjustment unit 23 has two hydraulic cylinders 27 which are arranged inside an outer guide profile 81st The outer guide profiles 81 are fixed to the front axle 29th Inside the outer guide profiles 81 inner guiding profiles 82 are displaceably arranged. The internal guide profiles 82 are fixedly connected to the vertical actuators 22nd The hydraulic cylinders 27 are supported at one end on each outer guide section 81 from and are secured with your mobile ends on the 72 displaced in the adjusting internal guide profiles 82nd Upon actuation of the horizontal actuator 23, the hydraulic cylinders 27 are supplied with hydraulic fluid, so that the inner guide profiles 82 moved to the outer guide profiles 82 in the adjustment 72nd The fixedly connected to the inner guide profiles 82 vertical actuators 22 and the composite end with the vertical actuators 22 wheels 3 is also displaced in the adjustment direction 72, and although depending on the actuation of the hydraulic cylinders. 27 either outwardly or inwardly The hydraulic cylinders 27 are only subjected to a displacement force in the adjustment 72nd The for supporting the chassis 2 via the wheels 3 acting in the vertical direction forces resulting from the weight forces on the wheel suspension 21, acting transversely to the displacement direction 72 and therefore burden the guide profiles 81, 82nd

One provided for the steering of the front wheels 3 tie rod 26 is designed essentially in the form of a further hydraulic cylinder 27 to 26 adjust the length of the tie rod to the changing track 71 during an adjustment of the gauge 71 in the adjustment 72nd The adjustment of the length of the tie rod 26 takes place synchronously with the adjustment of the gauge 71 in the adjustment 72nd

The adjustment of the rear axle is completely analogous to the adjustment of the front axle 28, said horizontal actuator 23 are formed accordingly. Only the tie rod 26 is not provided at the rear axle.

LIST OF REFERENCE NUMBERS

<dl id="dl0002"><dt>1</dt><dd>special-purpose vehicle</dd><dt>2</dt><dd>chassis</dd><dt>20</dt><dd>Adjustment, vertical</dd><dt>21</dt><dd>Arm</dd><dt>22</dt><dd>Vertical adjusting unit</dd><dt>23</dt><dd>Horizontal adjustment unit</dd><dt>24</dt><dd>Air suspension unit</dd><dt>25</dt><dd>anti-roll bar</dd><dt>26</dt><dd>tie rod</dd><dt>27</dt><dd>hydraulic cylinders</dd><dt>28</dt><dd>Front</dd><dt>29</dt><dd>Spherical plain bearings</dd><dt>3</dt><dd>wheel</dd><dt>31</dt><dd>hub motor</dd><dt>4</dt><dd>constructions</dd><dt>5</dt><dd>equipment</dd><dt>51</dt><dd>Winkelverstellaufnahme</dd><dt>6</dt><dd>platform</dd><dt>70</dt><dd>ground clearance</dd><dt>71</dt><dd>gauge</dd><dt>72</dt><dd>adjustment</dd><dt>81</dt><dd>outer guide profile</dd><dt>82</dt><dd>inner guide profile</dd></dl><dl id="dl0003" compact="compact"><dt>F</dt><dd>direction of travel</dd><dt>G</dt><dd>hillside</dd><dt>P</dt><dd>plant</dd><dt>α</dt><dd>Angle, slope gradient</dd><dt>L</dt><dd>Left</dd><dt>R</dt><dd>Right</dd></dl>