EP3613900B1 - Soil working machine with a conveyor device which can be removed from the milling unit quickly and method for same - Google Patents

Description

The present invention relates to a soil working machine, such as a road milling machine or a surface miner, according to the preamble of claim 1.

1. a.) Annähern eines dem Fräswerkzeuggehäuse näher gelegenen Abschnitts der Aufnahme-Fördereinrichtung an den Maschinenrahmen,
2. b.) Verbinden des dem Fräswerkzeuggehäuse näher gelegenen Abschnitts der Aufnahme-Fördereinrichtung mit dem Maschinenrahmen und dabei Bilden einer pendelbaren Aufhängung der Aufnahme-Fördereinrichtung am Maschinenrahmen, und
3. c.) Lösen einer ersten Bewegungskopplung des dem Fräswerkzeuggehäuse näher gelegenen Abschnitts der Aufnahme-Fördereinrichtung mit einem relativ zum Maschinenrahmen beweglichen Teil des Fräswerkzeuggehäuses.

The present invention further relates to a method for the temporary removal of a receiving conveyor device from a milling unit of a soil-removing soil cultivation machine that is ready for operation at the start of the process, in particular a road milling machine or a surface miner, the milling unit comprising a milling tool and a milling tool housing that shields the milling tool, wherein the Conveying device conveys soil material removed from the milling unit during a milling operation of the soil working machine, the method comprising the following steps:

1. a.) Approaching a section of the receiving conveyor device which is closer to the milling tool housing to the machine frame,
2. b.) connecting the section of the receiving conveyor device which is closer to the milling tool housing to the machine frame and thereby forming a pendulum suspension of the receiving conveyor device on the machine frame, and
3. c.) Releasing a first movement coupling of the section of the receiving conveyor device which is closer to the milling tool housing and a part of the milling tool housing that is movable relative to the machine frame.

A generic soil cultivation machine and a generic method are from the DE 10 2014 011 878 A1 known. The milling unit with the milling tool and the milling tool housing that shields the milling tool from the outside environment must be detached and removed from the machine frame from time to time. As a rule, immediately after removing a milling unit, another milling unit is mounted on the machine frame in order to avoid downtimes of the tillage machine as much as possible.

The milling unit according to the present application is attached to the tillage machine ready to be milled, as a rule, on the underside of the machine frame and is located in the longitudinal direction of the tillage machine between a front and a rear drive arrangement. The milling unit can usually only be removed from the machine frame in the transverse direction of the machine (parallel to the pitch axis) after being released from the machine frame due to the movement space restricted by the machine frame in the machine height direction (parallel to the yaw axis) due to the drives in the longitudinal direction of the machine (parallel to the roll axis) .

A milling tool housing within the meaning of the present application has lateral boundary walls which shield the outside environment parallel to the pitch axis to the milling tool. The side boundary walls are also referred to as "edge protection" in the professional world. The milling tool housing also has a front boundary wall, which runs ahead of the milling tool when the soil tillage machine moves forward and shields the milling tool from the outside in the direction parallel to the roll axis. The front boundary wall is also referred to as a "hold-down" in the specialist field. In addition, the milling tool housing has a rear delimitation wall which follows the milling tool when the soil cultivating machine moves forward. This rear boundary wall, which is also referred to as a "scraper" in the specialist field, also shields the outside environment parallel to the roll axis down to the milling tool. The shielding directions of the front and rear boundary wall are opposite to one another. The milling tool, which is ready to be milled, is located between the front and rear boundary walls and between the side boundary walls.

The problem behind the generic objects: Soil tillage machine and method is the following:
The lateral boundary walls of the milling tool housing protrude in many cases in the longitudinal direction of the machine over the front boundary wall of the milling tool housing. A longitudinal end of the receiving conveyor device that is closer to the milling unit is located between the sections of the lateral boundary walls protruding forward beyond the front boundary wall. A lateral removal of the milling unit from the machine frame is therefore only possible without collision if the lateral boundary walls and the longitudinal end of the receiving conveyor device closer to the milling unit no longer overlap when viewed along the pitch axis. Therefore, the longitudinal end of the receiving conveyor device closer to the milling unit is temporarily moved forward, that is to say in the forward direction of travel of the soil cultivating machine, away from the milling unit.

The DE 10 2014 011 878 A1 teaches this, first of all, the longitudinal end of the receiving conveying device, which is mounted on the front boundary wall, and which is closer to the milling unit, with the front boundary wall which is adjustable in height by means of an actuator Approach the machine frame, then attach it to the machine frame so that it can swing and loosen the bearing connection of the longitudinal end with the front boundary wall. The longitudinal end of the receiving conveyor device further away from the milling unit remains in the meantime mounted on the machine frame in a translationally sliding manner.

According to the known method and the known soil cultivating machine, the longitudinal end of the receiving conveyor device closer to the milling unit is deliberately suspended on the machine frame with inclined connecting means so that the entire receiving conveyor is biased away from the milling unit by gravity in the longitudinal direction of the machine. If the receiving conveyor device is allowed to run free, for example after removal of a securing connecting means which initially secures the longitudinal end nearer the milling unit in its longitudinal position in the machine longitudinal direction, the longitudinal end on the pendulous connecting means pivots away from the milling unit about its suspension point on the machine frame. The longitudinal end further away from the milling unit moves in a sliding manner, guided by its sliding bearing, also with a movement component which is directed away from the milling unit.

The disadvantage of this solution is, on the one hand, that the gravity-driven pivoting movement of the longitudinal end of the receiving conveyor device, which is closer to the milling unit, can only be controlled to a limited extent because of the large mass of the receiving conveyor device. Another disadvantage is that the gravity-driven movement drive of the longitudinal end of the receiving conveyor device, which is closer to the milling unit, only works in one direction, depending on the inclined course of the connecting means, - usually away from the milling unit - the longitudinal end closer to the milling unit, however, after a new arrangement of a milling unit on the machine frame, back to the milling unit must be approximated and connected to the front boundary wall for joint movement. This approach of the longitudinal end closer to the milling unit against the weight of the receiving conveyor requires either additional mechanical effort or increased effort and / or allows only a slight removal of the longitudinal end closer to the milling unit from the front boundary wall.

It is therefore the object of the present invention to facilitate a temporary removal of the longitudinal end of the receiving conveyor device, which is closer to the milling unit, in the light of the disadvantages outlined above.

This object is achieved by the present invention according to a device-related aspect by means of a soil cultivation machine of the type mentioned at the outset, the receiving conveyor device of which, in addition to the pendulum suspension on the machine frame, can be coupled in such a way by a second movement coupling different from the first with a component arrangement of the soil cultivation machine that can be driven to move relative to the machine frame that a driven movement of the component arrangement from a starting position into an end position different therefrom causes a displacement of the receiving conveying device, which is suspended on the machine frame, away from the milling unit.

• d.) Koppeln der Aufnahme-Fördereinrichtung mit einer zur Bewegung relativ zum Maschinenrahmen antreibbaren Bauteilanordnung der Bodenbearbeitungsmaschine mittels einer von der ersten verschiedenen zweiten Bewegungskopplung derart, dass eine angetriebene Bewegung der Bauteilanordnung von einer Ausgangsposition in eine davon verschiedene Endposition eine Verlagerung der Aufnahme-Fördereinrichtung von dem Fräsaggregat weg bewirkt, und
• e.) Antreiben der Bauteilanordnung zu einer Bewegung von der Ausgangsposition in die Endposition.

The present invention achieves this object according to a method-related aspect by a method of the type mentioned at the beginning, which additionally comprises the following method steps:

• d.) Coupling the receiving conveyor device to a component arrangement of the soil cultivating machine that can be driven to move relative to the machine frame by means of a second movement coupling different from the first such that a driven movement of the component assembly from a starting position to a different end position results in a displacement of the receiving conveyor device from causes the milling unit away, and
• e.) Driving the component arrangement to move from the starting position into the end position.

The core idea on which the present invention is based is the use of a component arrangement that can be driven relative to the machine frame for movement as a switchable movement drive for the receiving conveying device in order, after the pendulum suspension of the section of the Receiving conveyor device and after releasing the first movement coupling of the longitudinal end of the receiving conveyor device closer to the milling unit to drive this longitudinal end in a targeted manner to move away from the milling unit. A gravity-driven movement of the longitudinal end closer to the milling unit, which can only be controlled to a limited extent, can thus be avoided. In addition, by using the component arrangement drivable for movement as a movement drive of the receiving conveyor device, a longer movement path away from the milling unit can be realized than is possible with the known only gravity-driven removal movement. Besides, it does not matter whether the first movement coupling is released before or after the production of the pendulum suspension. This is because the longitudinal end of the receiving conveyor device, which is closer to the milling unit, is preferably gripped underneath in a form-fitting manner by a section of the part of the milling tool housing that is movable together with it, so that it cannot fall down if the first movement coupling is released, even if the portion of the receiving conveyor device that is closer to the milling tool is not yet suspended from the machine frame so that it can swing.

In connection with the suspension of the longitudinal end of the receiving conveyor device closer to the milling unit, the term "pendulum" does not in the present case mean that the pendulum suspension actually leads to a pendulum movement of the longitudinal end closer to the milling unit. For a pendulum suspension of the longitudinal end of the receiving conveyor device closer to the milling unit within the meaning of the present application, it is sufficient if the longitudinal end closer to the milling unit can be deflected in at least one direction around its machine frame-side suspension point after the first movement coupling has been released. The pendulum suspension or the pendulum suspendability is therefore implemented according to the invention by a suspension means, preferably with a chain section and / or a cable section. The suspension means according to the invention can alternatively or additionally also comprise a rod if these pivot axes are parallel and generally orthogonal to the longitudinal axis of the rod at their respective suspension locations on the machine frame on the one hand and on the receiving conveyor device on the other hand is pivotally coupled to the machine frame and the receiving conveyor. The suspension means with chain and / or the cable section preferably have coupling formations at least at one longitudinal end, preferably at both longitudinal ends, for coupling to the machine frame and / or to the receiving conveyor device. Such a coupling formation can be, for example, a hook, in particular a snap hook, or an eye.

The part of the milling tool housing coupled for common movement by the first movement coupling with the section of the receiving conveyor device which is closer to the milling tool is preferably at least a section of the front boundary wall of the milling tool housing. Particularly preferably, said section of the receiving conveyor is coupled to the hold-down device of the milling tool for joint movement.

The hold-down device is a housing part that closes off the front boundary wall of the milling tool housing from the floor to be machined and, during milling, slides in a floating manner on the floor section located in front of the milling tool. The hold-down device preferably has a sliding shoe which has a considerably larger dimension in the longitudinal direction of the machine than the sections of the front boundary wall which are further away from the ground to be processed in the vertical direction of the machine. Since milling tillage usually takes place in up-cut milling, at the end of the milling tool engagement with the ground, milling chisels emerge from the still unprocessed ground. The exit point is in front of the milling tool. There is therefore a high risk that clods of soil will flake off or break out in an undesired and uncontrolled manner. The hold-down device prevents such an undesired uncontrolled breaking out of clods in front of the milling tool by physically resting on the ground still to be worked in an area immediately ahead of the milling tool.

The hold-down device or generally that part of the milling tool housing coupled for joint movement with the section of the receiving conveyor device which is closer to the milling tool is preferably by means of a power device, such as for example a hydraulic or pneumatic piston-cylinder arrangement or an electromotive spindle, can be raised and lowered so that, preferably and without the use of additional actuators, the section of the receiving conveyor device closer to the milling tool housing can be brought closer to the machine frame by lifting the part of the Milling tool housing takes place.

The "assembled state" in the context of the present application denotes a state of the soil cultivating machine that is not ready for milling, in which the first movement coupling is released and the section of the receiving conveyor device closer to the milling tool is suspended on the machine frame such that it can swing.

A section of the receiving conveyor that is further away from the milling tool is preferably supported both in the operating state and in the assembled state with a translational degree of freedom on a bearing, preferably fixed to the machine frame, for example sliding on a slide bearing or hanging on a hanger. A sliding cam, which is in abutment engagement with a predetermined sliding path of the sliding bearing, projects preferably on the section of the receiving conveyor device which is further away from the milling tool. The slide path defines the relative movement path of the slide cam and thus of the section of the receiving conveyor device located further away from the milling tool relative to the machine frame. The slideway can be formed by a flank through and a groove wall of a sliding groove which is opposite the flank at a distance. The slide cam can slide in the slide groove and be secured against lifting off the slide track by the slide groove. As a rule, however, the weight of the receiving and conveying device is sufficient to prevent it from being lifted off, so that the sliding cam preferably merely rests on the sliding track. Of course, the slide cam can deviate from the illustration above on the machine frame and the slide track on the receiving conveyor device, although this is not preferred because of the available installation spaces of different sizes on the respective assemblies: machine frame and receiving conveyor device. However, it is advantageously sufficient to only use the storage situation of the storage of the receiving conveyor device, which is closer to the milling unit to change during the transition from the operating state to the assembly state and vice versa, while the storage situation of the storage of the receiving conveyor device further away from the milling unit can remain unchanged.

Particularly preferably, when the soil tillage machine stands on a flat horizontal surface as a reference state and is aligned for forward travel, a machine frame-side suspension point and a conveyor-side suspension point of one and the same pendulum suspension are located in a common plane orthogonal to the roll axis of the tillage machine, so that the weight of the receptacle -Feeder on the pendulum suspension does not cause any movement along the roll axis (in the longitudinal direction of the machine) away from the milling unit.

In view of the friction prevailing between the receiving conveyor device and the machine frame, strict orthogonality of the common plane of the suspension points mentioned is not absolutely necessary. A noteworthy gravity-driven movement of the suspension point on the conveyor side does not occur when the common arrangement plane of the machine frame-side suspension point and the conveyor-side suspension point with respect to the above-mentioned plane orthogonal to the roll axis as a reference plane by no more than 15 °, more preferably by no more than 10 ° the pitch axis of the tillage machine is inclined.

If a pendulum suspension is implemented through three suspension points, two on an assembly consisting of the machine frame and receiving conveyor and one on the other assembly, the condition described above to avoid a gravitational movement away from the milling unit in the longitudinal direction of the machine applies after the first movement coupling has been released for the bisecting plane between each of the two common planes inclined to the reference axis about the pitch axis, each of which contains a different suspension point on one assembly and the suspension point on the other assembly. Is this bisecting plane immediately before the first movement coupling is released If the amount is inclined by no more than 15 ° to the reference plane around the pitch axis, it is to be expected that the receiving conveyor device will automatically move away from the milling unit, driven by gravity, after the first movement coupling has been released. Avoiding such an automatic movement of the longitudinal end of the receiving conveyor device closer to the milling unit away from the milling unit facilitates a restoring movement of the longitudinal end closer to the milling unit through the component arrangement to the milling unit to re-establish the first movement coupling in order to make the tillage machine ready for milling again.

A movement of the component arrangement from the end position in the direction of the starting position preferably causes a displacement of the receiving conveyor device towards the milling unit. For this purpose, the second movement coupling can be designed in such a way that it can transmit both tensile and shear forces. Alternatively, the second movement coupling can be designed such that it can transmit tensile forces in opposite directions, for example by using two tensile means acting in opposite directions, of which only one or the other acts depending on the direction of movement of the component arrangement.

Due to the large mass of the receiving conveyor device, however, it is preferred that the receiving conveyor device, and with it its longitudinal end closer to the milling unit, causes an approaching movement to the milling unit by its weight due to the force of gravity. When the second movement coupling is established, the movement of the component arrangement from the end position back towards the starting position can control or moderate the gravity-induced return movement of the longitudinal end closer to the milling unit as a constraint.

According to the invention, the second movement coupling has pulling means, such as a pulling cable arrangement or a pulling chain arrangement, and / or pushing means, such as, for example, a pulling cable arrangement or a pulling chain arrangement, which can be coupled to both the receiving conveyor device and the component arrangement such as a push rod assembly to transmit forces from the component assembly to the receiving conveyor.

The second movement coupling preferably comprises traction means, particularly preferably exclusively traction means, since these can be stowed in a particularly small storage space when not in use. In order to be able to align the tensile forces that can be transmitted by traction means in a directionally appropriate manner for the desired distance movement of the longitudinal end of the receiving conveyor device closer to the milling unit, the second movement coupling preferably comprises, in addition to the traction means, deflection means, which are designed to deflect the course and the force of the traction means. Such a deflection means can comprise at least one deflection roller and / or at least one deflection-sliding formation. A deflecting slide formation can avoid an additional, separate deflecting component if a formation already present on the soil working machine is used as a deflecting slide formation in an advantageous manner. For this purpose, it may be sufficient if the deflecting slide formation is formed on a structure that cannot be moved together with the component arrangement between the starting position and the end position. Such a structure can be, for example, a crossbeam, rod, strut and the like on the soil cultivating machine. The structure having the deflecting slide formation can be fixed to the machine frame or can be movable both relative to the machine frame and relative to the movement of the component arrangement between the starting position and the end position.

When the second movement coupling is established, the deflection means are arranged in the force flow between the coupling points of the traction means on the receiving conveyor and the component arrangement in order to transmit forces between these coupling points in the best possible alignment from the component arrangement to the receiving conveyor.

The receiving conveyor is preferably a belt conveyor with a conveyor belt running around a conveyor frame. A first coupling point of the second movement coupling is therefore preferably located on the Conveyor frame rigid compared to the conveyor belt. In order to avoid undesirable tilting moments, there is preferably a second movement coupling on both sides of the conveyor belt about a tilting axis parallel to the conveying direction of the receiving conveyor, the coupling points of the two second movement couplings on the conveyor frame preferably - in the reference state defined above - only being spaced from one another along the pitching axis, however, have essentially the same coordinates along the roll axis and along the yaw axis of the soil working machine.

In principle, the receiving conveyor device can be the only conveyor device of the soil cultivation machine which conveys soil material removed by the milling tool away from the milling unit in the milling operation. In order to implement relatively long and / or non-straight conveying routes, the soil cultivating machine comprises, according to an advantageous development, a discharge conveying device following in the conveying direction away from the milling unit and onto the receiving conveying device. The receiving conveyor device then transfers soil material removed during the milling operation to the discharge conveyor device for further conveyance in the conveying direction. The discharge conveyor, which is usually designed to discharge the soil material transferred to it at its longitudinal end remote from the transfer to a pick-up vehicle traveling with the soil cultivation machine, is relative to the setting of the soil material discharge to the pick-up vehicle in the reference state defined above around a tilt axis parallel to the pitch axis tiltable to the machine frame. The component arrangement can include the discharge conveyor, which is already spatially close to the receiving conveyor, in order to cause the discharge conveyor to move away from the milling unit through its relative movement relative to the machine frame in the assembled state. A second coupling point of the second movement coupling can then be arranged on the discharge conveyor device. The first coupling point of the second movement coupling is, as described above, arranged on the receiving conveyor. For reasons of the highest possible stability and the greatest possible forces that can be transmitted via the second movement coupling, in particular Tensile forces, the second coupling point is preferably arranged on a frame of the discharge conveyor.

The discharge conveyor is preferably also a belt conveyor with a rigid frame and a conveyor belt that is guided around the frame.

In addition to being tiltable about the tilting axis, the discharge conveyor device can also be pivotable about a pivoting axis parallel to the yaw axis. Then the discharge conveyor is usually received on a holding bracket so that it can only be tilted about the tilt axis and is articulated together with the holding bracket about the pivot axis parallel to the yaw axis on the machine frame. Since the movement of the discharge conveyor between the starting position and the end position in order to move the receiving conveyor away from the milling unit is preferably a movement around the tilting axis, the holding bracket can have the above-mentioned deflection means, for example one that bridges the holding bracket parallel to the pitch axis Traverse, although the holding bracket itself is movable relative to the machine frame. It is sufficient that it is not movable together with the discharge conveyor in the direction in which the movement of the discharge conveyor serves as a drive for the removal movement of the receiving conveyor.

The component arrangement can comprise a component of a drive train of the receiving conveyor device or the discharge conveyor device following the receiving conveyor device in the conveying direction away from the milling unit. This drive train component can preferably be a drive roller of a conveyor belt of one of the aforementioned conveyor devices. If the drive train component is a drive train component of the receiving conveyor device, the coupling of the second movement coupling to the drive train component is a coupling to the receiving conveyor device. If the drive train component of the receiving conveyor device is coupled by the second movement coupling to the machine frame or to a component or assembly of the soil cultivation machine that is movable relative to the receiving conveyor device, the second movement coupling produced in this way by driving the drive train component, the receiving conveyor device can be removed from the milling unit and preferably brought closer to the milling unit again by reversing the direction of movement of the drive train component.

If, on the other hand, the drive train component is part of another conveyor device, for example the discharge conveyor device, the second movement coupling extends between the receiving conveyor device and the drive train component. Again, by driving the drive train component and by reversing its movement, the receiving conveyor device can be removed from the milling unit and brought closer again.

In order to provide a feed movement for the milling tool, the soil cultivation machine is preferably a self-propelled soil cultivation machine with a drive motor. The component arrangement can then comprise a section of a chassis of the soil cultivation machine, with which the soil cultivation machine stands on a substrate that supports it. Then the first coupling point of the second movement coupling, as set out above, can be arranged on the receiving conveyor device and the second coupling point of the second movement coupling can be on a part of the chassis that rolls on the ground during a travel movement of the soil tillage machine, such as a crawler or a running wheel , be arranged. Then the longitudinal end of the receiving conveyor device closer to the milling unit can be removed from the milling unit by a travel movement in which the rolling chassis part moves relative to the receiving conveyor device and preferably brought closer to it again by reversing the direction of travel.

The machine frame is preferably coupled to the chassis in a height-adjustable manner, with a height adjustment of the machine frame causing the displacement of the receiving conveyor device in the assembled state. In this case, the second coupling point of the second movement coupling can, but does not have to be, arranged on a rolling chassis part. The second coupling point of the second Movement coupling can instead be arranged on a component that can be moved together with the chassis relative to the machine frame, for example on a lifting column or on a chassis fork rigidly connected to the lifting column or on a chassis axle component that guides a rolling chassis part to the rolling movement. The first coupling point of the second movement coupling is arranged on the receiving conveyor. To convert the lifting and lowering movement of the machine frame into a removal or approach movement of the longitudinal end of the receiving conveyor device closer to the milling unit, an above-mentioned deflection device is preferably provided between the mentioned first and second coupling points of the second movement coupling, for example a cross member fixed to the machine frame or generally a deflector fixed to the machine frame -Gliding formation.

The component arrangement can alternatively also comprise that part of the milling tool housing to which the receiving conveyor device is coupled in the operating state by the first movement coupling, that is to say, for example, preferably the hold-down device. By coupling the receiving conveyor to the movable milling tool housing part with the interposition of at least one deflection means, the relative movement of the milling tool housing part relative to the machine frame can cause the receiving conveyor to move away from the milling unit. Likewise, by reversing the direction of movement of the milling tool housing part, an approaching movement to the milling unit can be brought about.

In principle, it can be thought of holding the receiving conveyor device in a desired position away from the milling unit by means of the component arrangement. Since holding in this position can be necessary for a considerable amount of time when changing milling units, it is advantageous to relieve the component arrangement and / or the second movement coupling if the receiving conveyor device in its position displaced away from the milling unit against a restoring approach movement to the Milling unit can be secured in. According to a structural embodiment, the soil cultivation machine can have a locking device for this purpose, in the engagement area of which a securing formation of the receiving conveyor device can be brought at a predetermined distance from the milling unit to produce a positive locking engagement. The securing formation of the receiving conveyor device can be, for example, the above-mentioned protruding slide cam, which executes a defined movement on the slide bearing pairing, preferably on the machine frame side, and therefore a predictable movement away from the milling unit during the removal movement of the longitudinal end of the receiving conveyor device closer to the milling unit. The locking device can have a bolt or hook, which can then be displaced in a blocking manner in the return movement path of the fixing formation when the fixing formation has passed the locking device along its removal movement path during a removal of the receiving conveyor from the milling unit. In this way, the locking device can physically block a return movement of the receiving conveyor device.

Simple and secure, because it avoids a locking actuation by an operator, the locking device can be a locking device for automatically producing a locking engagement with the fixing formation when the fixing formation comes into a predetermined locking engagement area of the locking device during a removal movement of the receiving conveyor device. For example, the latching device can comprise a hook which can be deflected out of a latching position and which can be deflected from a latching position into which it is pretensioned during a movement of the fixing formation away from the milling unit and which cannot be deflected during a movement of the fixing formation in the opposite direction. For example, the hook can have a bevel with which the fixing formation comes into contact during a movement away from the milling unit and removes the hook from the latching position against its bias by continuing the movement by means of the contact engagement. After passing the fixing formation on one in the direction of the removal movement on the run-up slope Following holding formation of the hook, the hook is adjusted back into the latching position by its bias, where it prevents the fixing formation and thus the receiving conveyor as a whole from moving closer to the milling unit. The hook must then be moved out of the latching position manually or by actuation by an operator in order to enable the receiving conveyor device to approach the milling unit again.

Of course, the securing formation can also be formed on the machine frame and the locking or latching device can be formed on the receiving conveyor device, although this is not preferred.

• f.) Sichern der Aufnahme-Fördereinrichtung in einer Stellung, in welcher die Aufnahme-Fördereinrichtung mit größerem Abstand vom Fräsaggregat angeordnet ist als in einem betriebsbereiten Zustand der Bodenbearbeitungsmaschine.

In general, the method for temporarily removing the receiving conveyor device from the milling unit can therefore include the following further step:

• f.) Securing the receiving conveyor device in a position in which the receiving conveyor device is arranged at a greater distance from the milling unit than when the soil tillage machine is ready for operation.

The milling tool is preferably a milling drum, which on its outside has milling chisels held exchangeably in chisel holders. To facilitate the exchange of worn milling tools, the tool holders are preferably tool holders. The milling drum is preferably rotatable about a milling drum axis running parallel to the pitch axis, preferably in the opposite direction in the milling operation. Consequently, the milling tool housing is preferably a milling drum box.

Fig. 1

eine grobschematische Seitenansicht einer erfindungsgemäßen Ausführungsform einer Bodenbearbeitungsmaschine in Gestalt einer Straßengroßfräse (Straßenfräsmaschine) im fräsbereiten Zustand,

Fig. 2

eine grobschematische Seitenansicht der Straßenfräsmaschine von Figur 1 mit der Aufnahme-Fördereinrichtung im Montagezustand, mit gelöster erster und hergestellter zweiter Bewegungskopplung,

Fig. 3

eine grobschematische Seitenansicht der Straßenfräsmaschine von Figur 2 mit zur Fräsmaschinen-Vorderseite hin vom Fräswalzenkasten entfernter Aufnahme-Fördereinrichtung,

Fig. 4

eine grobschematische Seitenansicht der Straßenfräsmaschine von Figur 1 mit der Aufnahme-Fördereinrichtung im Montagezustand, mit gelöster erster und hergestellter alternativer zweiter Bewegungskopplung,

Fig. 5

eine grobschematische Seitenansicht der Straßenfräsmaschine von Figur 4 mit zur Fräsmaschinen-Vorderseite vom Fräswalzenkasten entfernter Aufnahme-Fördereinrichtung, und

Fig. 6

eine grobschematische Seitenansicht einer Gleitlagerung eines vom Fräswerkzeug ferner gelegenen Abschnitts der Aufnahme-Fördereinrichtung mit Verriegelungsvorrichtung zur Lagesicherung des Abschnitts der Aufnahme-Fördereinrichtung.

The present invention will be explained in more detail below with reference to the accompanying figures. It shows:

Fig. 1

a roughly schematic side view of an embodiment according to the invention of a soil cultivation machine in the form of a large road milling machine (road milling machine) in the state ready to be milled,

Fig. 2

a roughly schematic side view of the road milling machine from Figure 1 with the receiving conveyor device in the assembled state, with released first and established second movement coupling,

Fig. 3

a roughly schematic side view of the road milling machine from Figure 2 with receiving conveyor device removed from the milling drum box towards the front of the milling machine,

Fig. 4

a roughly schematic side view of the road milling machine from Figure 1 with the receiving conveyor device in the assembled state, with released first and established alternative second movement coupling,

Fig. 5

a roughly schematic side view of the road milling machine from Figure 4 with receiving conveyor device removed from the milling drum box towards the front of the milling machine, and

Fig. 6

a roughly schematic side view of a sliding bearing of a section of the receiving conveyor located further away from the milling tool with a locking device for securing the position of the section of the receiving conveyor.

In Figure 1 an embodiment of a soil cultivating machine according to the invention is generally designated by 10. The soil cultivating machine 10 in the example shown is a road milling machine, more precisely a large road milling machine 10. It comprises a machine frame 12 which is supported on a chassis 14 such that it can be adjusted in height. The chassis 14 comprises at least one, usually two rear drives 16 and at least one, usually two front drives 18. The drives 16 and 18 are crawler drives in the illustrated case. One or more of the drives 16 and 18 can differ from this be wheel drives. The road milling machine 10 rests with the chassis 14 on a subsurface U, which in the present example is a flat, horizontal reference subsurface.

The rear drives 16 are each connected to the machine frame 12 by a rear lifting column 20 and the front drives 18 are each connected to the machine frame 12 by a front lifting column 22. The lifting columns 20 and 22 are each connected to the drives 16 and 18, respectively, via a chassis fork 24. The drives 16 and 18 are received in their respective chassis fork 24 so as to be pivotable about a pivot axis parallel to the pitch axis Ni. By extending the lifting columns 20, the distance of the machine frame 12 above the ground U parallel to the yaw axis Gi in the area of the rear bogies 16 can be increased, by extending the lifting columns 22 in an analogous manner in the area of the front bogies 18, retracting the lifting columns 20 or / and 22 accordingly reduces the distance between the machine frame 12 and the subsurface U in the area of the respective drives 16 and / or 18.

A replaceable milling unit 26 is arranged on the underside of the machine frame 12, comprising a milling drum 28 as a milling tool and a milling drum box 30 that shields the milling drum from the outside environment, and is fixedly mounted on the machine frame 12 for joint movement therewith. Parts of the milling drum box 30 are movable relative to the machine frame 12, in particular can be raised and lowered, for example to allow walls or wall sections of the milling drum box to float on the subsurface U while the road milling machine 10 is being milled, or to use actuators around walls or wall sections to avoid collisions with approaching ground formations to be able to raise and lower again. For the sake of clarity, the milling drum box 30 is only shown in broken lines.

In the milling operation and for maintenance, the milling drum 28 can be rotated about an axis of rotation, not shown, which is parallel to the pitch axis Ni. In the example shown, the milling drum 28 is translationally immovable relative to the machine frame 12. The setting of the milling depth is therefore carried out in the example shown by the lifting columns 20 and 22 and the setting of the height of the machine frame above the subsurface U. In a departure from this, the milling drum 28 can also be accommodated on the machine frame 12 in a height-adjustable manner.

The operation of the road milling machine 10 can be controlled from an operator's platform or operator's platform 32, which is located above the milling unit 26 in the example shown.

A motor 34 in the rear part of the machine frame 12 supplies the driving force both for the propulsion of the road milling machine 10 via the chassis 14 and for the milling drum 28 and, if desired, also for further actuators of the road milling machine 10. The motor 34 is an internal combustion engine, the mechanical output of which for Part converted into hydraulic energy and the latter is made available for use as drive energy at different locations of the road milling machine 10.

In front of the milling drum 28, i.e. closer to the front of the road milling machine 10, there is a receiving conveyor 36 in the form of a belt conveyor with a circumferential belt 38. A frame 40 of the receiving conveyor 36 supports the belt 38 and its guide, not shown in detail - and drive rollers. Only the end pulleys of the belt 38 mounted on the frame 40 are indicated by dashed lines.

At the front longitudinal end of the machine frame 12, a holding bracket 42 is connected to the machine frame 12 so as to be pivotable about a pivot axis 43 parallel to the yaw axis Gi. With the holding bracket 42, in turn, a discharge conveyor 46 is connected, which can be inclined relative to the holding bracket 42 about a tilting axis 44 parallel to the pitching axis Ni. The discharge conveyor 46 is also a belt conveyor with a revolving belt (not shown) and with a frame 48 guiding and supporting the belt. The end pulleys of the belt rotatably mounted on the frame 48 are indicated by dashed lines.

In the milling operation, a section 36a of the receiving conveyor 36, which is closer to the milling drum 28, picks up soil material from the subsurface U that has been removed as intended by the milling drum and conveys it away from the milling drum 28 to the discharge conveyor 46. In the area of its longitudinal end remote from the milling unit, the receiving conveyor 36 transfers the removed soil material to the discharge conveyor 46, which conveys it further away from the milling unit 26 and drops it at its longitudinal end 50 remote from the machine frame in a known manner, for example onto a receiving vehicle traveling with the road milling machine 10 .

At its longitudinal end which is closer to the milling drum 28, the receiving conveyor device 36 is connected to a hold-down device 52 on the milling drum box 30 via a first movement coupling 53 so as to be pivotable about a compensation axis 51 parallel to the pitch axis Ni. The first movement coupling 53 can, as in the present case, be a pair of bearing arms 53a which hold the longitudinal end of the receiving conveyor 36, which is closer to the milling unit, between them.

The hold-down 52 is in turn movable by an actuator 54, for example a hydraulic or pneumatic piston-cylinder arrangement or an electromotive actuator, parallel to the yaw axis Gi relative to the machine frame 12, that is, it can be raised and lowered. The hold-down device can be guided in such a way for the lifting and lowering movement. that during the lifting movement it also executes a pivoting movement about a pivoting axis parallel to the pitching axis in a first pivoting direction and, during the lowering movement, a pivoting movement in a second pivoting direction opposite to the first. Since the first movement coupling 53 of the hold-down device 52 with the take-up conveyor 36 only allows a pivoting movement about the compensation axis 51 as the only relative degree of freedom of movement between the take-up conveyor 36 and hold-down 52, the longitudinal end of the take-up conveyor 36 closer to the milling drum 28 moves when raising and lowering the hold-down device 52 with this jointly parallel to the yaw axis Gi. Because of the relative degree of freedom of movement described, the receiving conveyor device 36 makes any pivoting movement parallel to the pitch axis of the hold-down device 52 during its lifting or lowering not with. A section 36b of the receiving conveyor 36 further away from the milling drum 28 is guided in translation with a movement component in the direction of the roll axis Ro, possibly also with a movement component in the direction of the yaw axis Gi on a slide bearing. The plain bearing is usually fixed to the machine frame.

As in Figure 1 As can be seen, the lateral boundary walls 55 of the milling drum box 30 protrude forwards beyond the hold-down device 52, so that the end of the receiving conveyor device 36, which is closer to the milling drum, is located between solid wall sections of the lateral boundary walls 55 of the milling drum box 30 when the road milling machine 10 is ready to be milled.

Because of the position of the drives 16 and 18, the milling unit 26 can only be removed from the rest of the road milling machine 10 in the machine side direction, that is, parallel to the pitch axis Ni, after it has been detached from the machine frame 12. However, the described overlap of the lateral boundary walls 55 of the milling drum box 30 and of the longitudinal end of the receiving conveyor device 36, which is closer to the milling unit, stands in the way of such a removal movement.

This risk of collision, which prevents the milling unit 26 from being replaced, can advantageously be eliminated as described below:
With the actuator 54, the holding-down device 52 and, together with it, the longitudinal end of the receiving conveyor device 36, which is closer to the milling unit, is raised and thus brought closer to the machine frame 12. In a sufficiently approximated state, the section 36a of the receiving conveyor device 36 which is closer to the milling drum 28 is secured by means of a suspension means 57, comprising a cable arrangement,

Chain arrangement or rod, suspended on the machine frame 12 such that it can swing. Such a pendulum suspension 56 is shown in FIG Figure 2 shown.

In addition, the receiving conveyor device 36 is coupled by means of a second movement coupling 58, which in turn can comprise a connecting means 59 with a cable arrangement, chain arrangement or rod, with a component arrangement which can be driven relative to the machine frame 12 for movement; in the example of Figure 2 with the discharge conveyor 46.

After the pendulum suspension has been produced and after the second movement coupling 58 has been produced, the first movement coupling 53 with the hold-down device 52 is released so that the hold-down device 52 can be moved independently of the receiving conveyor 36. This situation is in Fig. 2 shown. The released first movement coupling 53 is no longer shown.

The movement coupling 58 can be guided via a deflection device, for example via a cross member 60 of the holding bracket 42. Because of the relative position of the two conveyor devices 36 and 46 to one another and because of the relative kinematics of the discharge conveyor device 46 relative to the machine frame 12 and relative to the receiving conveyor device 36 Alternatively, the second movement coupling 58 can also be coupled directly between the two conveying devices 36 and 46 without deflection devices, as in FIG Figure 2 is indicated by dashed lines.

The coupling point on the machine frame side and the coupling point of the pendulum suspension 56 on the side of the receiving conveyor 36 are preferably located in a plane E orthogonal to the roll axis Ro when the first movement coupling 53 is released - this applies to a reference state shown in the figures, with a flat and horizontal subsurface U. As a result, the weight of the receiving conveyor 36 cannot initiate any movement of the receiving conveyor 36 parallel to the roll axis Ro after the first movement coupling 53 has been released. Due to frictional effects between the remaining position of the receiving conveyor 36 in its section 36b further away from the milling drum 28, the plane E, unlike in the figures, can be slightly inclined relative to the illustrated roll axis-orthogonal plane E around the pitch axis Ni, without that it is because of this after the first movement coupling has been released 53 comes to a shift of the receiving conveyor 36 in the machine longitudinal direction, that is, parallel to the roll axis Ro. Above all, a gravity-driven movement of the receiving conveyor 36 away from the milling unit 26 should be avoided, since this makes it more difficult for the receiving conveyor 36 to approach the milling unit and thus to re-establish the first movement coupling 53.

Figure 3 now shows a position of the road milling machine 10 starting from the position of FIG Figure 2 The discharge conveyor 46 is lowered about the tilting axis 44. The discharge conveyor 46 can be inclined relative to the holding bracket 42 via a tilt actuator 62, for example a hydraulic piston-cylinder arrangement. The original position of the discharge conveyor 46 is shown in FIG Figure 3 indicated by dashed lines in the outline for comparison.

The coupling point of the second movement coupling 58 on the side of the discharge conveyor device 46 has been removed by the lowering movement about the tilting axis 44 from the position shown in FIG Figure 2 shown starting position of the discharge conveyor 46 along a circular path around the tilt axis 44 in the Figure 3 End position shown of the discharge conveyor 46 is moved. Due to this partial circular movement, the mentioned coupling point of the second movement coupling 58 has completed a movement with a component parallel to the roll axis Ro away from the installation location of the milling unit 26. Either via the traverse 60 as a deflecting slide formation or in direct connection with the receiving conveyor 36, the receiving conveyor 36 was moved out of the by the lowering movement of the discharge conveyor 46 Figure 2 The position shown is pulled away in the direction of the milling unit 26 towards the front of the road milling machine 10. The movement carried out by the section 36a of the receiving conveyor 36 which is closer to the milling drum 28 is also due to the deflection of the pendulum suspension 56 from the plane E in Figure 3 recognizable.

The section 36a of the receiving conveyor 36 now no longer overlaps along the roll axis Ro with the lateral boundary walls 55 of the milling drum box 30, so that the milling unit 26 can now be moved away from the machine frame 12 or from the rest of the road milling machine 10 parallel to the pitch axis Ni.

The second movement coupling 58, the receiving conveyor 36 in their Figure 3 The position shown pulled away from the milling unit 26 is held under tension or the receiving conveyor 36 is held in a form-fitting manner in this position by a locking means, preferably a latching means. As a result, the second movement coupling 58 and the discharge conveyor device 46 coupled to it can be mechanically relieved. Such an automatically locking locking means is roughly schematically shown in FIG Figure 6 shown below.

Figure 4 shows substantially the same posture and state of the road milling machine 10 as Fig. 2 With the only difference that the second movement coupling 58 or its connecting means 59 is not articulated at its longitudinal end remote from the receiving conveyor 36 to the discharge conveyor 46 as a component arrangement movable relative to the machine frame 12 and relative to the discharge conveyor 36 , but on at least one chassis fork 24 of the front drives 18 of the chassis 14. Due to the height adjustability of the machine frame 12 relative to the drives 16 and 18 and the powerful drive available for this, the height adjustment of the machine frame 12 can also be used as a drive for a displacement movement of the receiving conveyor 36 can be used away from the milling unit 26 in the longitudinal direction of the machine.

Figure 5 shows the road milling machine 10 by extending the front lifting columns 22 and thus by lifting the machine frame 12 over the front drives 18 starting from the starting position of FIG Figure 4 relocated to an end position.

The height adjustment of the machine frame 12 relative to the front drives 18 was in turn made by the cross member 60 of the holding bracket 42 as a deflecting slide formation The guided connection means 59 of the second movement coupling 58 are transferred to the receiving conveyor 36 and this is thus displaced away from the milling unit 26 in the longitudinal direction of the machine from its original position when the first movement coupling 53 is established. The starting position of the road milling machine 10 is again in FIG Figure 5 Shown in dashed lines - this time on the basis of the underside of the machine frame 12 - in order to illustrate the change in the position of the road milling machine 10.

Also in Figure 5 the discharge conveyor device 36 is so far removed from the milling unit 26 in the longitudinal direction of the machine that the milling unit 26 can be removed from the machine frame 12 without collision in a direction parallel to the pitch axis Ni.

It is easy to see that further component arrangements which can be driven for movement relative to the receiving conveying device 36 can be used as a drive for moving the receiving conveying device 36 away from the milling unit 26. For example, the hold-down device 52 that can be raised and lowered by the actuator 54 can also be used as such a component arrangement.

In Figure 6 the slide bearing 70 of the section 36b of the receiving conveyor device 36 located further away from the milling drum 28 is shown in a rough diagram.

A bearing cam 72 of the section 36b lies on the plane of the drawing Figure 6 orthogonal bearing surface 74a of a bearing projection 74 on the machine frame 12. The direction of gravity is parallel to the yaw axis Gi. The bearing surface 74a is inclined with respect to the ground U, specifically along the roll axis in the direction away from the milling unit 26 upwards.

The bearing cam 72 is shown in dashed lines in an in Figure 6 The position shown further to the left and further below is shown which the bearing cam 72 then assumes when the road milling machine 10 is ready for milling.

The bearing cam 72 is shown in a solid line Figure 6 drawn further to the right and further above with regard to its position ready for milling This position, shown with a solid line, is taken by the bearing cam 72 in the states of the road milling machine 10 of the Figures 3 or 5 on when the receiving conveyor 36 has been removed from the milling unit as described above by the second movement coupling 58.

In the course of the movement of the bearing cam 72 along the bearing surface 74a from the dashed line to the solid line position of the Figure 6 the bearing cam 72 moves a locking hook 78 against the bias of a spring 80 about the axis of rotation 81 from the position shown in FIG Figure 6 The latching position shown, which the latching hook 78, driven by the spring 80, assumes again when the bearing cam 72 reaches the engagement area 82 of the latching hook 78.

In the opposite direction of movement of the bearing cam 72, the latching hook 78 cannot automatically be moved out of its latching position by the cam movement. For this purpose, a release actuator 84 is arranged, which raises the latching hook 78 about its axis of rotation 81 to such an extent that the bearing cam 72 can slide back into the position ready for milling. For example, the receiving conveyor device 36 can be secured in its position in its position remote from the milling unit 26 until necessary work in the area of the milling unit 26, such as an exchange of the milling unit 26, has been completed and the receiving conveyor device 36 has to re-establish the first movement coupling 53 is to be approached again to the milling unit 26 by reversing the movements of the second movement coupling 58 described above.

Claims (15)

1. An earth working machine (10), for example a road milling machine (10) or a surface miner, having

   - a machine frame (12);

   - a milling unit (26) that is carried on the machine frame (12) and encompasses a milling tool (28) and a milling tool housing (30) that shields the milling tool (28) with respect to the external environment of the earth working machine (10); and

   - a receiving conveying device (36) that is operationally embodied to convey earth material, removed by the milling tool (28), away from the milling unit (26);

   wherein the receiving conveying device (36), both in an operationally ready operating state and in a non-operationally-ready installation state, is supported on the earth working machine (10) movably relative to the machine frame (12); wherein in the operating state of the receiving conveying device (36), a portion of the receiving conveying device (36) which is located closer to the milling tool (28) is coupled by means of a first motion coupling (53) for motion together with a part (52) of the milling tool housing (30) which is movable relative to the machine frame (12);
   wherein, in order to establish the installation state:

   i) the first motion coupling (53) is disengageable, and

   ii) the earth working machine (10) comprises a suspension means (57), by which the portion (36a) of the receiving conveying device (36) which is located closer to the milling tool (28) is swingably suspendable on the machine frame (12),

   characterized in that the earth working machine (10) comprises a second motion coupling (58), being different from the first one, said second motion coupling (58) comprising pulling means and/or pushing means couplable to the receiving conveying device (36) as well as to a component arrangement (24, 46) of the earth working machine (10), which is drivable to move relative to the machine frame (12), by which the receiving conveying device (36), in addition to the swingable suspension (56) at the machine frame (12) is couplable to the component arrangement (24, 46) in such a way that a driven motion of the component arrangement (24, 46), from an initial position into a final position different therefrom, brings about a displacement of the swingably suspended receiving conveying device (36) away from the milling unit (26).
2. The earth working machine (10) according to Claim 1, characterized in that a motion of the component arrangement (24, 46) from the final position into the initial position brings about a displacement of the receiving conveying device (36) toward the milling unit (26), in particular in gravity-induced fashion as a result of the weight of the receiving conveying device (36).
3. The earth working machine (10) according to Claim 1 or 2, characterized in that the pulling means are a tension cable arrangement or a tension chain arrangement, and/or that the pushing means are a pushrod arrangement.
4. The earth working machine (10) according to Claim 3, characterized in that the second motion coupling (58) comprises pulling means as well as deflection means (60) which are embodied to deflect the course and the applied force of the pulling means, for example at least one deflection roller and/or at least one deflecting slide configuration (60), for example a crossmember (60), rod, strut, and the like, which is not movable together with the component arrangement (24, 46) between the initial position and the final position, in particular is machine-frame-mounted.
5. The earth working machine (10) according to one of the preceding claims, characterized in that the component arrangement (24, 46) encompasses an ejection conveying device (46) which follows the receiving conveying device (36) in a conveying direction away from the milling unit (26) and onto which the receiving conveying device (36) transfers removed substrate material for further conveyance in a conveying direction.
6. The earth working machine (10) according to one of the preceding claims, characterized in that the component arrangement (24, 46) encompasses a component of a drive train of the receiving conveying device, or of an ejecting conveying device (46) which follows the receiving conveying device (36) in a conveying direction away from the milling unit (26), for example a drive roller of a conveying belt.
7. The earth working machine (10) according to one of the preceding claims, characterized in that it encompasses a self-propelled earth working machine (10) having a drive motor (34), the component arrangement (24, 46) encompassing a portion (24) of a propelling unit (14) with which the earth working machine (10) stands on a substrate (U) that supports it.
8. The earth working machine (10) according to Claim 7, characterized in that the machine frame (12) is coupled vertically adjustably to the drive unit (14), a vertical adjustment of the machine frame bringing about the displacement of the receiving conveying device (36) in the installation state.
9. The earth working machine (10) according to one of the preceding claims, characterized in that the component arrangement (24, 46) encompasses that part of the milling tool housing (52) to which the receiving conveying device (36) is coupled by the first motion coupling (53) in the operating state.
10. The earth working machine (10) according to Claim 9, characterized in that the part (52) of the milling tool housing (30) encompasses a front wall of the milling tool housing which precedes the milling tool (28) in its advancing direction and/or encompasses a preceding hold-down device (52).
11. The earth working machine (10) according to one of the preceding claims, characterized in that the receiving conveying device (36) is securable, in its position displaced away from the milling unit (26), against a returning approaching motion toward the milling unit (26).
12. The earth working machine (10) according to Claim 11, characterized in that it comprises a locking apparatus (78) into whose engagement region (82) a retaining configuration (72) of the receiving conveying device (36) can be brought, in the context of a predetermined distance from the milling unit (26), in order to establish a positive locking engagement.
13. The earth working machine (10) according to Claim 12, characterized in that the locking apparatus (78) is a latching apparatus (78) for automatically establishing a latching engagement with the retaining configuration (72) when the retaining configuration (72) arrives in a predetermined latching engagement region (82) of the latching apparatus during a distancing motion of the receiving conveying device (36).
14. A method for temporarily distancing a receiving conveying device (36) from a milling unit (26), which encompasses a milling tool (28) and a milling tool housing (30) that shields the milling tool (28), of a substrate-removing earth working machine (10), in particular a road milling machine or a surface miner, that is operationally ready at the beginning of the method, the receiving conveying device (36) conveying substrate material, removed during milling operation of the earth working machine (10), away from the milling unit (26), the method encompassing the following steps:

    a) bringing a portion (36a), located closer to the milling tool housing (30), of the receiving conveying device (36) closer to the machine frame (12);

    b) connecting that portion (36a) of the receiving conveying device (36) which is located closer to the milling tool housing (30) to the machine frame (12) and thereby creating a swingable suspension (56) of the receiving conveying device (36) on the machine frame (12);

    c) disengaging a first motion coupling (53) between that portion of the receiving conveying device (36) which is located closer to the milling tool housing (28) and a part (52) of the milling tool housing (30) which is movable relative to the machine frame (12);

    d) coupling the receiving conveying device (36), by means of a second motion coupling (58) different from the first, to a component arrangement (24, 46) of the earth working machine (10) which is drivable to move relative to the machine frame (12), in such a way that a driven motion of the component arrangement (24, 46), from an initial position into a final position different therefrom, brings about a displacement of the receiving conveying device (36) away from the milling unit (26); and

    e) driving the component arrangement (24, 46) to move from the initial position into the final position.
15. The method according to Claim 14,
    wherein it encompasses the following further step:

    f) securing the receiving conveying device (36) in a position in which the receiving conveying device (36) is arranged with a greater spacing from the milling unit (26) than in a milling-ready state of the earth working machine (10).

Images