CONSTRUCTION MACHINE AND METHOD FOR OPERATING A CONSTRUCTION MACHINE

Abstract

The invention relates to a construction machine, comprising a carrier device, a mast which is in particular configured as a leader, and an articulation device, with which the mast is adjustably mounted on a front side of the carrier device, wherein the mast is adjustable between an operating position, in which the mast is arranged upright, and a lying down position, in which the mast is arranged in a lying down manner, wherein the articulation device comprises two support rods, arranged substantially in parallel with one another, for forming a parallelogram arrangement, which rods are each pivotably articulated to the carrier device on the one hand and to a kinematics stand on the other hand, which stand is mounted on the mast so as to be pivotable about an articulation axis, two support cylinders, which are pivotably articulated, on the one hand to the kinematics stand and on the other hand to the mast, and at least one actuating cylinder, which is configured for adjusting the parallelogram arrangement and thus for pivoting the kinematics stand relative to the carrier device. It is in accordance with the invention that the articulation device is configured to pivot the mast out of the upright operating position, forwards into the lying down position, in which the mast is arranged in front of the front side of the carrier device and extends forwards away from the carrier device.

Description

The invention relates to a construction machine comprising a carrier device, a mast which is in particular configured as a leader, and an articulation device, with which the mast is adjustably mounted on a front side of the carrier device, wherein the mast is adjustable between an operating position, in which the mast is arranged upright, and a lying down position, in which the mast is arranged in a lying down manner, wherein the articulation device has two support rods, arranged substantially in parallel with one another, for forming a parallelogram arrangement, which rods are each pivotably articulated to the carrier device on the one hand and to a kinematics stand on the other hand, which stand is mounted on the mast so as to be pivotable about an articulation axis, two support cylinders, which are pivotably articulated on the one hand to the kinematics stand and on the other hand to the mast, and at least one actuating cylinder, which is configured for adjusting the parallelogram arrangement and thus for pivoting the kinematics stand relative to the carrier device, according to the preamble of claim 1.

The invention furthermore relates to a method for operating a construction machine, wherein the construction machine comprises a carrier device, a mast, which is configured in particular as a leader, and an articulation device, by means of which the mast is adjustably mounted on a front side of the carrier device, wherein the articulation device comprises two support rods, arranged substantially in parallel with one another, for forming a parallelogram arrangement, which rods are each pivotably articulated to the carrier device on the one hand and to a kinematics stand on the other hand, which stand is mounted on the mast so as to be pivotable about an articulation axis, two support cylinders, which are pivotably articulated on the one hand to the kinematics stand and on the other hand to the mast, and at least one actuating cylinder, which is configured for adjusting the parallelogram arrangement and thus for pivoting the kinematics stand relative to the carrier device, wherein the mast is adjusted, by means of the articulation device, between an operating position, in which the mast is arranged upright, and a lying down position, in which the mast is arranged in a lying down manner, according to the preamble of claim 11.

EP 3 214 258 B1 and EP 1 655 415 A1 disclose construction machines comprising a carrier device and a mast, in particular a leader, mounted thereon, wherein the mast is pivotably articulated to the carrier device in a lower region. The mast can be held in a substantially vertical operating position by two support cylinders, also referred to as neck cylinders, which are supported on the one hand on the mast and on the other hand on the carrier device. The spacing of the two support cylinders increases downwards in the manner of an inverted V. This results in a particularly stable support of the mast relative to the carrier device. Extending the support cylinders makes it possible for the mast to be tilted forwards, about its lower articulation point on the carrier device, into a lying down position, as can be derived in particular from EP 3 214 258B1. A lying down mast arrangement of this kind, in front of the carrier device, is advantageous for mounting and dismantling the mast. This arrangement is referred to in the following as V-kinematics.

Dismantling of the mast is then necessary if the transport dimensions of the construction machine are to be reduced in size, for example in the case of transport of the construction machine from one construction site to the next. In a position lying on the ground, the relatively long mast can be dismantled into individual partial segments, which can then be handled and transported relatively easily.

However, a disadvantage in the case of V-kinematics is that, due to the short articulation to the carrier device in its upright operating position the mast can be adjusted only a little in the lying down direction, only to a limited extent relative to the carrier device. In order to bring the tool into the desired position, e.g. to the desired drilling point, relatively fine pre-positioning with the carrier device has to take place. Therefore, exact positioning of the mast at a work site can be associated with some movement effort and time expenditure.

A generic construction machine follows for example from EP 4 311 881 A1. In this known mast arrangement, the mast is not articulated directly on the carrier device. A pivotable articulation of the mast relative to a kinematics stand, also referred to as a kinematics triangle, exists, which kinematics stand is itself adjustably mounted on the carrier device by means of a parallelogram arrangement with two support rods. The two support rods of the parallelogram arrangement are arranged substantially in parallel and spaced apart from one another. Furthermore, two support or neck cylinders are provided, which are supported on the one hand on the mast and on the other hand on the kinematics stand. Said cylinders hold the mast in a substantially vertical operating position.

The kinematics stand, and thus also the mast mounted thereon, can be pivoted relative to the carrier device by means of one or more actuating cylinder(s) on the parallelogram arrangement of the support rods, wherein it is possible to adjust and set a spacing of the mast with respect to the carrier device, in the lying down direction.

Furthermore, the parallelogram arrangement makes it possible to transfer the mast towards the rear, on the carrier device, in the case of pivoting of the kinematics stand forwards and simultaneous retraction of the support cylinders. For this purpose, a receiving region for the mast is formed on the carrier device. Furthermore, the kinematics stand must be configured to be as compact and slim as possible, in order that it can also be transferred, without colliding with a driver's cab formed on the carrier device. The transfer and dismantling of the mast is often not necessary for transport purposes. However, should dismantling of the mast nonetheless be required due to restrictions, e.g. in transport weight, the arrangement of the mast in a position substantially lying down on the carrier device makes mounting and dismantling of the mast more difficult. Crane equipment is required for lifting the mast onto or from the carrier device.

The object of the invention is to specify a construction machine and a method, with which a particularly efficient operation of the construction machine can be achieved.

The object is achieved, according to the invention, on the one hand by a construction machine having the features of claim 1, and on the other hand by a method having the features of claim 11. Preferred embodiments of the invention are specified in the respective dependent claims.

In the case of the construction machine, it is provided according to the invention that the deflection device is configured to pivot the mast forwards, out of the upright operating position into the lying down position, in which the mast is arranged in front of the front side of the carrier device and extends forwards away from the carrier device.

A basic concept of the invention consists in configuring a construction machine having an articulation device, with which a greater spacing of the mast to the carrier device can be adjusted, and it is possible, with continuing good support of the mast, to pivot said mast forwards into a lying down position, in front of the carrier device. In a lying down position of this kind, the mast can be laid directly on the ground, which makes it possible for the mast to be mounted or dismantled without complex crane equipment.

According to a first aspect of the invention, this is achieved in that the articulation device comprises a parallelogram arrangement having two support rods arranged substantially in parallel with one another, which rods are in each case pivotably articulated to the carrier device on the one hand and to a kinematics stand on the other hand. In this case, the mast is mounted on the kinematics stand so as to be pivotable about an articulation axis. The axes of the support rods and of the kinematic stand are preferably oriented in parallel with one another and face in a lying down direction or in a transverse direction with respect to the longitudinal direction of the mast.

Furthermore, according to a further aspect of the invention, two support cylinders are arranged, which are pivotably articulated to the kinematics stand on the one hand and to the mast on the other hand. These pivot axes can also be arranged in parallel with the axes of the support rods and the articulation axis of the kinematics stand. Since the kinematics stand is arranged in front of the carrier device, and also remains in front of the carrier device when the mast is pivoted into the lying down position, the kinematics stand can be configured having a high degree of freedom. In particular, the kinematics stand can be configured having a width, in the transverse direction, which preferably extends over a substantial part or the entire width of the carrier device. This allows a particularly stable mast support by the support cylinders in a triangle arrangement in the manner of an inverted V, wherein the support cylinders move towards one another, from the kinematics stand in the direction towards the mast. A certain angular adjustment of the mast with respect to the vertical can also be achieved using the support cylinders.

Finally, according to a further aspect of the invention, at least one actuating cylinder is arranged on the parallel arrangement, which cylinder can serve for adjusting the parallel arrangement and thus for pivoting the kinematics stand relative to the carrier device. The actuating cylinder can thus be used for setting a desired spacing of the mast relative to the carrier device, without changing its essential orientation.

Thus, in the case of the construction machine according to the invention, the mast can be adjusted relative to the carrier device with a high degree of freedom, wherein there is furthermore a high rigidity in the mast support and a possibility of laying the mast down forwards into a lying down position.

In principle, the support cylinders can be configured in any suitable manner, depending on the structural conditions of the articulation device. According to one embodiment of the invention, it is particularly preferred for the support cylinders to be in a retracted state in the upright operating position, and for the support cylinders to be extended in order to reach the lying down position. In the retracted position, the length of the support cylinders is reduced and the support cylinders are particularly rigid in this state. Thus, the support cylinders can contribute particularly well to the stable support of the mast in the upright operating position, in which relatively high forces can occur during operation.

However, the support cylinders are extended upon reaching the lying down position. In this position, however, forces are barely exerted thereon. In the lying down position, the mast also does not require any notable support by the support cylinders, in particular due to the direct support by the ground or another underlay. Indeed, high tractive forces are required for erecting the mast, but the rigidity of the arrangement does not play any role at this moment.

According to a further embodiment variant of the invention, it is advantageous for the at least one actuating cylinder to be pivotably articulated to the carrier device or one of the support rods on the one hand, and to the kinematics stand or one of the support rods on the other hand. What is essential is that the support rods of the parallelogram arrangement pivot approximately in parallel with one another, during extending or retracting of the at least one actuating cylinder, and in the process a spacing of the mast with respect to the carrier device can be yet further adjusted and set. This allows for simplified adjusting of the mast without complex displacing of the carrier device.

For particularly efficient tilting of the mast forwards, it is expedient according to a configuration variant of the invention for the articulation axis of the kinematics stand to be arranged at a lower end region of the mast, in particular at the lower end of the mast.

A further preferred embodiment of the invention consists in that the at least one actuating cylinder is retractable and/or extendable in order to reach the lying down position, wherein the kinematics stand and the support rods are pivotable forwards. In particular in the case of extending of the support rods for tilting into the lying down position, a particularly reliable pivot movement forwards can take place. In a lying down position, dismantling of the mast from the support cylinders and the kinematics stand can then take place relatively easily. Vice versa, in order to mount the mast, said mast can be arranged in a lying down position in front of the carrier device, such that after corresponding connection of the components, in particular of the articulation device, to the mast, the mast can be moved into an upright operating position directly from the carrier device itself, without crane equipment.

According to a further embodiment variant of the invention, a particularly stable mast support is achieved in that the support cylinders are mounted, on the one hand on a rear side of the mast, and, on the other hand on bearing portions of the kinematics stand. The rear side of the mast is the side of the mast which is facing the carrier device. The connection bearings are, in particular configured as pivot bearings, such that a tilting of the mast forwards is readily made possible. A certain angular setting of the mast relative to a vertical can also be achieved by corresponding shaping of the bearings of the support cylinders, even in the case of an asymmetrical actuation of the support cylinders.

According to a further advantageous embodiment of the invention, it is provided that the carrier device is configured approximately in a box-like manner with a length and a width, and that the support cylinders are mounted on the kinematics stand on bearing portions that are opposite one another in the width direction, the outer ends of which portions are spaced apart from one another approximately in a manner corresponding to the width of the carrier device. Thus, in order to form a V-arrangement with the support cylinders, largely the entire width of the carrier device can be used. It is also possible that the kinematics stand can protrude laterally beyond the carrier device. In this way, a particularly wide “V” can be achieved in the arrangement of the support cylinders, which contributes to particularly stable and rigid mast support.

According to a further possible configuration of the invention, it is particularly advantageous for the kinematics stand to comprise two lateral bearing portions, which are interconnected via a central portion, and for the lateral bearing portions to be triangular, L-shaped or beam-shaped in side view. The articulation points or connection bearings for the support cylinders, the mast, and optionally the at least one actuating cylinder can be efficiently arranged on the lateral bearing portions. Thus, such a design of the kinematics stand makes it possible for a particularly compact and at the same time stable kinematics stand to be achieved. The central portion located between the lateral bearing portions, designed in this way, can have a smaller cross-section than the lateral bearing portions.

The carrier device comprises a movable undercarriage, which in particular comprise a caterpillar chassis, and an upper structure, which is rotatably mounted on the undercarriage. The carrier device can thus be configured to be mobile. The preferably rotatable mounting of an upper structure on a movable undercarriage, in particular comprising a caterpillar chassis, makes it possible for particularly efficient positioning of the mast at a desired work site to be achieved.

In principle, the construction machine can be configured for any suitable employment purpose. Particularly advantageous configuration variants of the invention consist in that said machine is configured as an earth auger device, a slotted wall device, a vibrator device, or a pile driver. An earth auger device can, in particular be configured for pile drilling by material-removing and/or displacing drilling to create a drilled hole in the ground. In the case of a slotted wall device, both a trench cutter with rotatably driven milling wheels, and a slotted wall gripper with gripper blades, can be held so as to be adjustable along the mast. In the case of a vibrator device, a vibrator means, and in the case of a pile driver, a pile-driving device, can be arranged, which can be configured, in particular for introducing a vibrator or ramming material, for example a sheet piling plank.

The invention furthermore includes a method for operating a construction machine, in particular one according to the invention, wherein the method according to the invention is characterised in that the mast is pivoted, by means of the articulation device, out of the upright operating position, forwards into the lying down position, in which the mast is arranged in front of the front side of the carrier device and extends forwards away from the carrier device. This allows for particularly simple dismantling or mounting of the mast, with continued very good support of the mast in the operating position. The method can, in particular be carried out by the construction machine according to the invention, described above. Correspondingly, the advantages described above can be achieved.

A preferred variant of the method according to the invention consists in that the support cylinders are retracted in order to reach the upright operating position, and that the support cylinders are extended in order to reach the lying down position. In the retracted state of the support cylinders, these are particularly rigid, which contributes to a stable support of the mast in the operating position.

Finally, it is provided, according to a further preferred embodiment of the invention, that in order to reach the lying down position, the at least one actuating cylinder is retracted or extended, wherein the kinematics stand and the support rods are pivoted forwards. This allows for efficient tilting of the mast forwards in front of the carrier device into a lying down position. In such a position, mounting and dismantling work, and maintenance, which is possibly required, can be carried out on the mast in an efficient manner. Preferably, the at least one actuating cylinder can also be configured and arranged in such a way that it is retracted in order to reach the lying down position. In principle, the at least one actuating cylinder can also be configured and arranged in the manner of a kinematic reversal, in such a way that it is extended in order to reach the lying down position.

An advantageous variant of the method according to the invention furthermore consists in that the parallelogram arrangement with the two support rods is dismantled and the support cylinders and the mast are mounted on the carrier device, with or without the kinematics stand, in order to form a rigid mast attachment. In this way, a virtually conventional V-kinematics without a parallelogram arrangement can be achieved, which is particularly rigid. After dismantling of the support rods and the at least one actuating cylinder, the support cylinders and the mast can be mounted on the carrier device, with or without the kinematics stand. Existing construction machines with a conventional V-arrangement can also be reconstructed and retrofitted accordingly.

The invention is explained in more detail in the following, with reference to a preferred embodiment, which is shown schematically in the drawings, in which show:

FIG. 1 a side view of a construction machine according to the invention, with a first mast position close to the carrier device;

FIG. 2 a side view of the construction machine from FIG. 1 with a second mast position further spaced apart from the carrier device;

FIG. 3 a front view of the construction machine according to FIG. 2; and

FIG. 4 a side view of the construction machine according to FIG. 1 to 3 with a mast tilted forwards.

FIG. 1 to 3 show the basical structure of a construction machine 10 according to the invention, in which a mast 20 is located in an upright operating position. The operating position corresponds, in particular to the vertical, but can deviate relative to the vertical by a few angular degrees depending on the operating situation.

The construction machine 10 according to the invention, which is shown, comprises a carrier device 12 to which the mast 20 is pivotably articulated via an articulation device 30. According to the exemplary embodiment, the carrier device 12 can comprise a movable undercarriage 14, which can preferably include a caterpillar chassis, and an upper structure 16, which is preferably rotatably mounted on the undercarriage 14. An operator cab as well as drives and winches, as well as further components, can be arranged on the carrier device 12.

According to the specified exemplary embodiment, the mast 20 can preferably be configured as a leader having a front linear guide 24. For example, a drill carriage 26 with a drilling drive for rotatably driving a drilling tool 28 can be guided along the linear guide 24. The drill, which is preferably configured in this way, can furthermore comprise a Kelly bar 27, via which a torque can be transmitted from the drilling drive to a drilling tool 28 at the lower end of the Kelly bar 27, and the drilling tool 28 can be raised and lowered.

According to the invention, the mast 20 is pivotably connected to the carrier device 12 via the articulation device 30, with a kinematics stand 32. In this case, the mast 20 is pivotably connected to the kinematics stand 32 at a lower end region, in particular at the lower end, via an articulation axis 22. The kinematics stand 32 is adjustably mounted on the carrier device 12 via a parallelogram arrangement 40 with two support rods 40 that are oriented substantially in parallel with one another. Furthermore, the mast 20 is connected to the kinematics stand 32 of the articulation device 30 via two support cylinders 50, wherein an upper end of the support cylinders 50 is articulated to a rear side of the mast 20, while a lower end of the support cylinders 50 is in each case hingedly connected to the kinematics stand 32. In this case, the spacing of the support cylinders 50 from one another widens from top to bottom, wherein a downwardly directed V is formed, as can be seen in FIG. 3.

The carrier device 12 with the upper structure 16 can be is configured in a box-like manner with a length and a width, wherein the support cylinders 50 are mounted on the kinematics stand 32 on bearing portions 34 that are opposite one another in the width direction, the outer ends of which portions can be spaced apart from one another approximately in a manner corresponding to the width of the carrier device 12. The two lateral bearing portions 34 of the kinematics stand 32 can be interconnected via a central portion 36, as is shown in FIG. 3. The lateral bearing portions 34 can preferably be triangular, L-shaped or beam-shaped in side view. FIGS. 1 and 2 show an approximately triangular shape.

In order to adjust the kinematics stand 32 and thus the mast 20, at least one actuating cylinder 46 is provided, which can be supported, in the embodiment shown by way of example, on the one hand on the carrier device 12 and on the other hand on the kinematics stand 32. In the exemplary embodiment according to FIG. 1 to 3, two actuating cylinders 46 are arranged, wherein, however, only one is visible in the side views according to FIGS. 1 and 2.

If the at least one actuating cylinder 46 is extended, according to the exemplary embodiment, the support rods 42 are directed upwards and the kinematics stand 32 together with the mast 20 articulated thereto are moved upwards. In this position, the mast 20 is located relatively close to the carrier device 12, as can be seen in FIG. 1.

The at least one actuating cylinder 46 can also be arranged in such a way that the support rods 42 are directed upwards (not shown) in the retracted state of the actuating cylinder 46.

If the at least one actuating cylinder 46 is retracted, in the embodiment shown the support rods 42 and the kinematics stand 32 are pivoted forwards, wherein the mast 20 is lowered and spaced further apart from the carrier device 12, as FIG. 2 clearly shows. During such a pivot movement of the kinematics stand 32, the support cylinders 50 can be held unchanged in a retracted position, wherein the mast 20 is held in its upright operating position and is reliably supported by the support cylinders 50. The articulation device 30 according to the invention thus makes it possible for a spacing between the mast 20 and the carrier device 12, and a height of the mast 20 with respect to the ground, to be efficiently set.

In the alternative arrangement, described above but not shown, of the at least one actuating cylinder 46, the support rods 42 and the kinematics stand 32 are correspondingly pivoted forwards during extension of the at least one actuating cylinder 46.

Proceeding from the position according to FIG. 2, in the embodiment shown the mast 20 can be pivoted out of its upright operating position, forwards into a lying down position in front of the carrier device 12, by extending the support cylinders 50. In this case, if the carrier device 12 comprises an undercarriage 14 and an upper structure 16 rotatably mounted thereon, the undercarriage 14 and upper structure 16 should preferably be oriented in the longitudinal direction.

In the position of the mast 20 according to FIG. 4, where it is lying on the ground, particularly simple dismantling of the mast 20 from the carrier device 12 can take place. For this purpose, in particular the support cylinders 50 can be detached, with their upper ends, from the mast 20. Furthermore, the kinematics stand 32 can be detached from the mast 20 at the articulation axis 22, such that after a detachment of support and winch cables, which may be necessary if applicable, the mast 20 can be easily separated from the carrier device 12. Vice versa, simple mounting of the mast 20 on the carrier device 12 can be performed by corresponding attachment of the support cylinders 50 and the kinematics stand 32 on the carrier device 12 again.

According to a further embodiment variant of the invention, the support rods 42 and the at least one actuating cylinder 46 can be dismantled from the carrier device 12, wherein the support cylinders 50 and the mast 20 can then be directly attached to the carrier device 12, with or without the kinematics stand 32. For this purpose, corresponding articulation points can be formed or arranged on the carrier device 12 or a connection component. As a result, it is possible to achieve simple reconstruction of the construction machine 10 according to the invention with the parallelogram arrangement 40, to form a construction machine with a V-arrangement of the support cylinders 50, without a parallelogram arrangement 40.

Claims

1. A construction machine, comprising

a carrier device,

a mast which is in particular configured as a leader, and

an articulation device, with which the mast is adjustably mounted on a front side of the carrier device, wherein the mast is adjustable between an operating position, in which the mast is arranged upright, and lying down position, in which the mast is arranged in a lying down manner,

wherein the articulation device comprises two support rods, arranged substantially in parallel with one another, for forming a parallelogram arrangement, which rods are each pivotably articulated to the carrier device on the one hand and to a kinematics stand on the other hand, which stand is mounted on the mast so as to be pivotable about an articulation axis, two support cylinders, which are pivotably articulated on the one hand to the kinematics stand and on the other hand to the mast, and at least one actuating cylinder, which is configured for adjusting the parallelogram arrangement and thus for pivoting the kinematics stand relative to the carrier device,

wherein

the articulation device is configured to pivot the mast out of the upright operating position, forwards into the lying down position, in which the mast is arranged in front of the front side of the carrier device and extends forwards away from the carrier device.

2. The construction machine according to claim 1,

wherein

in the upright operating position the support cylinders are in a retracted state, and

the support cylinders are extended in order to reach the lying down position.

3. The construction machine according to claim 1,

wherein

the at least one actuating cylinder is pivotably articulated to the carrier device or one of the support rods on the one hand, and to the kinematics stand or one of the support rods on the other hand.

4. The construction machine according to claim 1,

wherein

the articulation axis of the kinematics stand is arranged at a lower end region of the mast, in particular at the lower end of the mast.

5. The construction machine according to claim 1,

wherein

in order to reach the lying down position the at least one actuating cylinder can be retracted and/or extended, wherein the kinematics stand and the support rods can be pivoted forwards.

6. The construction machine according to claim 1,

wherein

the support cylinders are mounted on the one hand on a rear side of the mast and on the other hand on bearing portions of the kinematics stand.

7. The construction machine according to claim 1,

wherein

the carrier device is configured approximately in a box-like manner with a length and a width, and

the support cylinders are mounted on the kinematics stand on bearing portions that are opposite one another in the width direction, the outer ends of which portions are spaced apart from one another approximately in a manner corresponding to the width of the carrier device.

8. The construction machine according to claim 1,

wherein

the kinematics stand comprises two lateral bearing portions, which are interconnected via a central portion, and

the lateral bearing portions are triangular, L-shaped or beam-shaped in side view.

9. The construction machine according to claim 1,

wherein

the carrier device comprises an undercarriage, which in particular comprises a caterpillar chassis, and an upper structure, which is rotatably mounted on the undercarriage.

10. The construction machine according to claim 1,

wherein

these are configured as an earth auger device, a slotted wall device, a vibrator device or a pile driver.

11. A method for operating a construction machine, in particular according to claim 1, wherein the construction machine comprises

a carrier device,

a mast, which is in particular configured as a leader, and

an articulation device, by means of which the mast is adjustably mounted on a front side of the carrier device,

wherein the articulation device comprises two support rods, arranged substantially in parallel with one another, for forming a parallelogram arrangement, which rods are each pivotably articulated to the carrier device on the one hand and to a kinematics stand on the other hand, which stand is mounted on the mast so as to be pivotable about an articulation axis, two support cylinders, which are pivotably articulated, on the one hand to the kinematics stand and on the other hand to the mast, and at least one actuating cylinder, which is configured for adjusting the parallelogram arrangement and thus for pivoting the kinematics stand relative to the carrier device,

wherein the mast is adjusted, by means of the articulation device, between an operating position, in which the mast is arranged upright, and a lying down position, in which the mast is arranged in a lying down manner,

wherein

the mast is pivoted, by means of the articulation device, out of the upright operating position, forwards into the lying down position, in which the mast is arranged in front of the front side of the carrier device and extends forwards away from the carrier device.

12. The method according to claim 11,

wherein

in order to reach the upright operating position, the support cylinders are retracted, and

in order to reach the lying down position, the support cylinders are extended.

13. The method according to claim 11,

wherein

in order to reach the lying down position, the at least one actuating cylinder is retracted or extended, wherein the kinematics stand and the support rods are pivoted forwards.

14. The method according to claim 11,

wherein

in order to form a rigid V-arrangement, the parallelogram arrangement with the two support rods is dismantled, and the support cylinders and the mast are carried on the carrier device.