Finisher, in particular slipform finisher

Abstract

The paver according to the invention comprises a machine frame 1 supported by undercarriages 3A, 3B, 4A, 4B and a paving unit 12 for paving material, wherein at least one distribution unit 13 is provided, which has a distribution element 20 arranged in the working direction A in front of the paving unit 12 for distributing the material to be paved in front of the paving unit. The paver according to the invention is characterized in that the at least one distribution unit 13 has a distribution arm 24, which comprises at least two articulated boom components 15, 16, wherein the lower part of the distribution arm 14 is pivotably attached to the machine frame 1 about an axis 18 that is substantially horizontal with respect to the working plane of the paver, and the distribution element 20 is pivotably attached to the upper part of the distribution arm 14 about an axis 21 that is substantially horizontal with respect to the working plane of the paver.The distributor arm 14 allows the distributor element 20 to be moved by pivoting movements of the at least two boom components 15, 16 in front of the paving device 12 in order to distribute the material to be paved over the working width of the paver.

Description

[0001] The invention relates to a paver, in particular a slipform paver, with a machine frame supported by running gears and an installation device for installing material.

[0002] Pavers are used for the installation of unbound and bound layers, such as asphalt or concrete. Slipform pavers, which have a slipform system, are used for the installation of concrete pavements.

[0003] The well-known slipform pavers allow for particularly economical concrete placement. The concrete to be placed is deposited directly in front of the slipform paver or transported from the side via a conveyor belt. To evenly distribute the concrete across the entire paving width, the slipform paver can be equipped with a distribution device, such as a spreading blade or a spreading auger. After placement, the concrete is homogeneously compacted with electric or hydraulic vibrators. The slipform then forms the concrete slab to a defined width and thickness as it advances forward.

[0004] Slipform pavers are known, for example, from DE 10 2011 101 944 A1, DE 10 2006 010 793 A1 and WO 2012 / 155904 A2.

[0005] In practice, the problem arises of evenly distributing a sufficient amount of material, such as concrete, across the paver's working direction. Generally, the material is unloaded from the side in front of the paver with an excavator or delivered by truck and tipped in front of the paver in the working direction. It is unavoidable that individual piles form, so the material must be evenly distributed across the entire working width.

[0006] EP 3 702 532 B1 describes a paver with a distribution device for distributing the material to be paved in a direction transverse to the working direction, which distribution device is arranged in front of the paving device in the working direction. The paver has an apron monitoring device configured to generate height profile data or signals that describe the height profile of the material deposited in front of the distribution device. Furthermore, a control device interacting with the monitoring device is provided, which controls the distribution device such that the material is transported from a section in which the height of the material is greater than a target height to a section in which the height of the material is less than the target height.

[0007] DE 10 2011 101 944 A1 describes a paver, in particular a slipform paver, which has a carriage attached to the machine frame with a linear guide, allowing the carriage to be moved in a direction perpendicular to the paver's working direction. Attached to the carriage are two spaced-apart distributor blades that can be pivoted about a horizontal axis. The distributor blades are plate-shaped or shovel-shaped elements. By moving the distributor blades perpendicular to the working direction, the material to be paved can be distributed across the entire working width of the paver.

[0008] The invention is based on the object of creating a paver that simplifies the paving process and allows for improved distribution of the material to be paved across the entire working width. This object is achieved according to the invention with the features of patent claim 1. The subject matter of the dependent claims relates to advantageous embodiments of the invention.

[0009] Another object of the invention is to provide a distribution device which simplifies the conversion of the machine frame to change the working width of the paver.

[0010] The paver according to the invention has a machine frame supported by undercarriages and an installation device for installing material, wherein at least one distribution device is provided, which has a distribution element arranged in front of the installation device in the working direction for distributing the material to be installed in front of the installation device. The paver can be a so-called 4-track machine with a front left-hand undercarriage in the working direction and a front right-hand undercarriage and a rear left-hand undercarriage and a rear right-hand undercarriage, or a so-called 2-track machine with only one left and one right-hand undercarriage. The undercarriages can be pivotally attached to the machine frame in order to be able to fold them through an angle of 90° into a transport position for loading onto a low-loader.

[0011] The paver according to the invention is characterized in that the at least one distribution device has a distribution arm comprising at least two boom components connected to one another in an articulated manner, wherein the lower part or base part of the distribution arm is pivotally attached to the machine frame about an axis that is essentially horizontal with respect to the working plane of the paver, and the distribution element is pivotally attached to the upper part or head part of the distribution arm about an axis that is essentially horizontal with respect to the working plane of the paver. The distribution arm thus allows the distribution element to be moved in front of the paving device by pivoting movements of the at least two boom components in order to be able to distribute the material to be paved across the working width of the paver.

[0012] In this context, the paver's working plane refers to the surface of the structure to be erected—for example, in the case of a slipform paver, the surface of the concrete slab. If the paver is tilted, for example, to construct an inclined surface, the swivel axes will not correspond to the horizontal relative to the earth's surface.

[0013] Attaching the distributor arm to the machine frame means that the distributor arm is supported by the machine frame. The distributor arm can be attached to any part of the machine frame. For example, the distributor arm can be pivotally attached to a support of the machine frame, such as a longitudinal beam or cross beam. Suitable brackets that allow pivoting movement of the distributor arm can also be used to pivot the distributor arm.

[0014] The distribution arm allows the distribution element to be moved over a relatively large range of motion, allowing the material to be paved to be captured and distributed across the entire working width of the paver. The distribution element can be moved not only in the plane of the terrain, but also vertically—i.e., up or down relative to the ground surface. This allows the distribution element to capture and displace the material to be paved not only from one side but also penetrate the material from above. This simplifies the distribution of the material across the entire working width.

[0015] The control of the distribution arm of the distribution device of the paver according to the invention can interact with the apron monitoring device known from EP 3 702 532 B1 in order to control the distribution arm such that the material is distributed in front of the paver. The known apron monitoring device allows monitoring of the apron relatively far ahead in the working direction. In combination with the known monitoring device, the advantages of the distribution device of the paver according to the invention are particularly evident, since, due to the large range of movement of the distribution arm, its distribution device can also detect material monitored by the monitoring device that is relatively far away from the paving device in the working direction.

[0016] The embodiments of the invention described below may comprise one or more of the features or combinations of features listed below. A feature designated with an indefinite article may also be present multiple times if the indefinite article is not to be understood as an explicit reference to a single use. Designating features with a number, for example, "first and second," does not exclude the possibility that these features may be present multiple times beyond the number indicated by the number. When describing all embodiments, the expression "may" should also be understood as "preferably" or "expediently."

[0017] One embodiment of the paver provides a special design for the distributor element that differs fundamentally from the known plate-shaped distributor blades. In this embodiment, the distributor element is a body designed like a cookie cutter. Consequently, the distributor element is open at the top and bottom and is only delimited by a circumferential, closed side wall. The shape of the cutter can basically be any, as long as the circumferential wall can penetrate into the material to be paved from above by a corresponding movement of the distributor arm or distributor element in a vertical direction and can be grasped and moved by a corresponding movement of the distributor arm or distributor element in a horizontal direction. The distributor element can thus be designed, for example, as a circular, oval, rectangular, or polygonal hollow body.In tests, a distribution element in the form of a hollow cylinder or a polygonal hollow body has proven effective. This element can be pushed or pressed into the material to be paved with relatively low forces, similar to a cutter. However, the distribution element of the slipform paver according to the invention can also be a conventional distribution blade.

[0018] The distribution element can pick up and move a specific amount of material, determined by the volume enclosed by the distribution element. Compared to a plate-shaped distribution blade, which can only move the material to be installed, the distribution element according to the invention facilitates picking up the material to be installed at a specific location and moving the material to a specific location in front of the installation device, since a specific amount of material can be captured and cannot be lost during the movement of the distribution element.

[0019] In tests, a ratio between the maximum width and the maximum height of the hollow body distributor element of between 1.5 and 2.5, in particular between 1.7 and 2.3, has proven particularly advantageous for practical applications. Furthermore, it has proven particularly advantageous if the hollow body encloses a volume for accommodating the material to be installed that lies between 0.1 and 1 m³, in particular between 0.2 and 0.4 m³.

[0020] The distributor element can be designed as an attachment for the distributor arm, allowing the paver to be equipped with distributor elements of different designs, i.e., sizes or shapes, for specific applications. Suitable brackets for interchangeable mounting of the distributor element are state-of-the-art.

[0021] The range of motion of the distribution element can be further increased by having at least one of the at least two boom components be a telescopic boom component. Compared to a distribution arm with non-telescopic boom components, a more compact design can be achieved with at least one telescopic boom component while maintaining the same range of motion.

[0022] The range of movement of the distributor element can also be increased by attaching the lower part or foot part of the distributor arm to the machine frame so that it can pivot about an axis that is essentially vertical with respect to the working plane of the paver, thereby achieving a further degree of freedom.

[0023] The machine frame of the paver according to the invention can have a left frame section running in the working direction and a right frame section running in the working direction. The machine frame can have a frame section running transversely to the working direction, which extends between the left and right frame sections. The individual frame sections can in turn consist of several parts. Such a paver design allows for the attachment of a distribution device to the frame section running transversely to the working direction, centrally between the right and left frame sections.

[0024] The central arrangement has the advantage that, with appropriate dimensions, a single distributor is sufficient to cover the area in front of the paving device across the entire working width of the paver. However, this generally requires that the distributor arm is pivotably mounted on the machine frame around a substantially vertical axis in order to cover the entire working width of the paver. However, the paver can also have two distributors arranged at a distance from each other in the working direction in front of the paving device for distributing the material to be paved in front of the paving device.

[0025] The lower or foot section of the distributor arm can also be attached to the left or right side of the machine frame in the working direction, for example to the left or right frame section directly or via an intermediate part, for example a side arm of a running gear, in such a way that the at least two boom components of the distributor arm extend in a direction transverse to the working direction. With appropriate dimensioning, a distributor device on just one of the two sides may be sufficient to cover the entire apron area. However, a distributor device can also be provided in both the left and right frame sections. These embodiments generally do not require a pivoting movement of the distributor arm about a vertical axis; however, a pivoting movement even around a small radius can significantly increase the width of the area covered by the distributor element.

[0026] The frame section of the machine frame running transversely to the working direction can be designed to be variable in length in the transverse direction. Such frame parts are state of the art. The frame part can, for example, be constructed in such a way that it can be extended using suitable add-on parts or telescopic parts. With such a frame part, the distribution device according to the invention, which, in contrast to a distribution blade for covering the entire apron area, does not need to be attached to the machine frame so that it can move in the transverse direction, proves to be advantageous because a carriage movable in the transverse direction is not required, which would complicate conversion work for increasing or reducing the working width of the paver or necessitate further modifications to the machine frame.

[0027] A further embodiment provides that a first boom component is pivotably connected to the machine frame by means of a first piston / cylinder arrangement about an axis that is substantially horizontal with respect to the working plane, a second boom component is pivotably connected to the first boom component by means of a second piston / cylinder arrangement about an axis that is substantially horizontal with respect to the working plane, and the distributor element is pivotably connected to the second piston / cylinder arrangement by means of a third piston / cylinder arrangement.

[0028] The control unit for actuating the piston / cylinder assemblies can be configured such that, by actuating an operating element, at least two piston / cylinder assemblies of the piston / cylinder assemblies are actuated simultaneously, so that the distributor arm executes a predetermined movement. In this context, a control unit is understood to be a device that, in conjunction with a hydraulic unit, controls the inflow or outflow of pressure medium for actuating the piston / cylinder assemblies, for example, by controlling valves in a hydraulic system.

[0029] For example, two boom components can be moved in such a way that the distribution element can be moved back and forth in a horizontal plane, for example, without having to operate multiple control elements simultaneously to control each boom component individually. For example, the control unit can be configured such that the distribution element remains in a predetermined angular position, in particular in a position parallel to the ground, during the pivoting movement of the distribution arm in order to be able to move the material. This simplifies the operation of the paver. Such controls, as such, are state of the art.

[0030] An alternative embodiment provides that the first and / or second boom component is designed as a parallelogram guide, so that the distributor element remains in a predetermined angular position during the pivoting movement of the distributor arm.

[0031] In the following, embodiments of the invention are explained in more detail with reference to the drawings.

[0032] They show: Fig. 1 shows an embodiment of a slipform paver according to the invention in perspective view, Fig. 2 shows the distributor arm of the distributor device of the slipform paver according to the invention of Fig. 1 in perspective view, Fig. 3Athe distribution element of the distribution device of Fig. 2 in perspective view, Fig. 3B the distributor element of the distribution device of Fig. 2 in plan view, Fig. 3C a side view of the distributor element of the distributor device of Fig. 2 from the direction of arrow I, Fig. 3D side view of the distributor element of the distribution device of Fig. 2 from the direction of arrow II, Fig. 4 a schematic representation of a slipform paver according to the invention with a central arrangement of the distribution device, Fig. 5 a schematic representation of a further embodiment of the slipform paver according to the invention with a central arrangement of the distribution device, Fig. 6 a schematic representation of a slipform paver according to the invention with two off-center arranged distribution devices, Fig. 7 a schematic representation of a slipform paver according to the invention with a translatory movement of the distribution device, Fig. 8 a schematic representation of a further embodiment of the slipform paver according to the invention with a lateral arrangement of the distribution device and Fig. 9 the control of the distribution device in a schematic representation

[0033] Fig. 1 shows a slipform paver as an example of a self-propelled construction machine in a perspective view. The slipform paver has a machine frame 1 supported by a chassis 2. The chassis 2 comprises a front, left-hand crawler track 3A and a front, right-hand crawler track 3B in the working direction A, and a rear, left-hand crawler track 4A and a rear, right-hand crawler track 4B in the working direction A, which rest on the ground. The crawler tracks 3A, 3B, 4A, 4B are attached to the machine frame 1 by means of front, left, and right lifting devices 5A, 5B and rear, left, and right lifting devices 6A, 6B, so that the machine frame 1 can be raised or lowered relative to the ground surface. The crawler tracks 3A, 3B, 4A, 4B are pivotally mounted on the machine frame 1 so that they can be folded through an angle of 90° into a transport position for loading onto a low-loader.The pivoting movement of the track drives 3A, 3B, 4A, 4B is effected by means of piston / cylinder arrangements 7, 8, 9, 10. Fig. 1 Shows the slipform paver in the working position, with the crawler tracks aligned in working direction A. The following description refers to this position. In this position, the front, left, and right side arms 3AA, 3BA of the front, left, and right crawler tracks 3A, 3B also extend in working direction A.

[0034] The machine frame 1 comprises a left frame section 11A in working direction A, a right frame section 11B, and a middle frame section 11C extending transversely to working direction A. The middle frame section 11C can be extended or shortened to change the working width of the slipform paver. For this purpose, individual frame sections 11CA, 11CB, 11CC can be inserted into or removed from the middle frame section 11C.

[0035] Between the outer frame parts 11A, 11B there is a cross-section to the working direction A Fig. 1 The paving device 12, shown largely concealed, is arranged for producing a concrete layer for a roadway. The paving device 12, which in the case of the slipform paver is a slipform, also has a variable working width, which can be adjusted, for example, by inserting and removing individual slipform segments. Such slipforms are state-of-the-art.

[0036] In addition, the slipform paver includes a distribution device 13 for distributing the concrete to be placed across the entire working width of the paver in a direction transverse to the working direction A. The distribution device 13 is arranged in front of the slipform 12 in the working direction A.

[0037] Fig. 1 shows an embodiment of the slipform paver with a distribution device 13 arranged centrally between the left and right frame parts 11A, 11B, which has a distribution arm 14. Fig. 2 shows the distributor arm 14 in an enlarged perspective view.

[0038] The distributor arm 14 comprises a first boom component 15 on the machine frame side and a second boom component 16 at the free end of the first boom component 15, which are pivotally connected to one another about an axis 17 that is horizontal with respect to the work plane. The lower part or foot part 15A of the first boom component 15 is pivotally attached to a pivot part 19 about an axis 18 that is horizontal with respect to the work plane, and a distributor element 20 is pivotally attached to the upper part or head part 16A of the second boom component 16 about an axis 21 that is horizontal with respect to the work plane.To actuate the first boom component 15, a first piston / cylinder arrangement 22 is provided, the piston 22A of which is articulated to the pivoting part 19 and the cylinder 22B of which is articulated to the first boom component 15, and to actuate the second boom component 16, a second piston / cylinder arrangement 23 is provided, the cylinder 23A of which is articulated to the first boom component 15 and the piston 23B of which is articulated to the second boom component 16. By retracting or extending the piston 22A of the first piston / cylinder arrangement 22, the first boom component 15 can be raised or lowered relative to the ground surface, and by retracting or extending the piston 23B of the second piston / cylinder arrangement 23, the second boom component 16 can be pivoted. The distributor element 20 can be retracted or extended.Extending the piston 24A of a third piston / cylinder assembly 24, whose cylinder 24B is pivoted to the second boom component 16, is pivoted via a lever mechanism 27 comprising two levers 25, 26, which is designed to reduce the angle of rotation of the distributor element 20 and increase the working torque. Instead of a piston of a piston / cylinder assembly, a cylinder of the piston / cylinder assembly can also be pivoted to the respective parts, or vice versa.

[0039] The Fig. 3A shows the distributor element in perspective and Fig. 3B in a top view in an enlarged view. The Figuren 3C und 3D show different side views of the distributor element from the direction of arrow I ( Fig. 3C ) and II ( Fig. 3D ) from Fig. 1 The distribution element 20 is designed like a cutter, with which material located on the ground surface, in particular concrete, can be picked up and moved. In the present embodiment, the distribution element 20 is designed as a polygonal hollow body that is open at its top and bottom. The side wall 20A of the hollow body can be manufactured relatively easily from several rectangular steel plates that are welded together. However, the hollow body can also be a hollow cylinder, for example.

[0040] The articulated attachment of the distribution element 20 to the second boom component 16 is achieved by a bracket 20B comprising two adjacent brackets 20BA that span the hollow body. The structure is further reinforced by lateral supports 20BB that engage the brackets 20BA and the side wall 20A.

[0041] The swivel part 19 is attached to a bracket 29 ( Fig. 1 ) is pivotally mounted about an axis 30 which is vertical with respect to the working plane and which is arranged on the machine frame 1 centrally between the left and right frame parts 11A, 11B. The piston 31A of a fourth piston / cylinder arrangement 31 engages on the right side of the console 29 in the working direction A, and the piston 32A of a fifth piston / cylinder arrangement 32 engages on the left side of the console 29 in the working direction A. Fig. 1 The cylinders of the piston / cylinder assemblies 31 and 32, which are concealed by other components, are connected to a frame part of the machine frame 1. By actuating the fourth and fifth piston / cylinder assemblies 31 and 32, respectively, the pivoting part 29 can be pivoted to the right or left side in the working direction A. Here, too, the piston and cylinder can be interchanged when fastening the piston / cylinder assembly.

[0042] Fig. 4 shows a highly simplified schematic representation of the slipform paver from Fig. 1 in plan view, wherein the corresponding parts are designated by the same reference numerals. The front side arms 3AA, 3BA of the carriages 3A to 4B in the working direction A are in the working position. The centrally arranged distributor arm 14 of the distributor device 13 can be pivoted to both sides within a wide range of motion B from an initial position extending in the working direction A. The range of motion B or working range of the distributor arm 14 is limited by the length of the boom components 15, 16 and their pivot angle. An even larger range of motion can be achieved by designing at least one boom component 15, 16 as a telescopic boom component.

[0043] Fig. 5 shows a highly simplified schematic representation of the slipform paver, in which the first boom component 15 is telescopic. The corresponding parts are again provided with the same reference numerals. The first boom component 15 consists of at least two intertwined hollow profiles 15A, 15B, which are connected by one or more Fig. 5 only schematically shown piston / cylinder arrangements 15C can be extended and retracted in order to increase or decrease the range of motion B.

[0044] Fig. 6 shows a further embodiment which differs from the embodiment of Fig. 4 or 5 in that instead of a central distribution device 13, two off-center, spaced-apart distribution devices 13' and 13" are attached to the middle frame part 11C of the machine frame 1. The corresponding parts are again provided with the same reference numerals. The distribution arms 14`, 14" of both distribution devices 13`, 13" are each pivotably attached to the machine frame 1 about a horizontal axis 30`, 30". This embodiment allows a relatively large working range even when the boom components 15`, 15", 16`, 16", of the distribution arms 14`, 14" are relatively short.

[0045] The embodiments described above have the advantage that a relatively large working area can be created without the need for a linear guide, which is required in a conventional spreading device that has a spreading blade that moves across the entire working width of the slipform paver to collect the material. Since a linear guide is not required, the width of the machine frame can be enlarged or reduced relatively easily.

[0046] Fig. 7 shows an alternative embodiment which differs from the embodiment of Fig. 6 differs in that instead of the two off-center distribution devices arranged at a distance from one another, only one distribution device 13 is provided, which can, however, be moved in a direction running transversely to the working direction A of the slipform paver. On the middle frame part 11C of the machine frame 1, which runs transversely to the working direction, there is a linear guide 31 with a carriage 31A, to which the distribution arm 14 of the distribution device 13 is fastened. The distribution arm 14 can be fastened to the carriage 31A so as to be pivotable about a vertical axis 30‴. However, this is generally not necessary with a translatory distribution device in order to cover a large range of movement. This embodiment, however, requires modification work on the linear guide in order to change the working width of the slipform paver.

[0047] Fig. 8 shows a further alternative embodiment which differs from the embodiments described above in that the distribution device 13 is fastened to the machine frame 1 in such a way that its distribution arm 14 extends in a direction running transversely to the working direction A. In this embodiment, the distribution arm is fastened on the right-hand side of the machine frame 1 in the working direction A, on the inside of the side arm 3BA of the right-hand drive 3B. The working area B can extend over the entire working width if the length of the boom components 15, 16 is sufficiently dimensioned. This embodiment can also have a distribution device 13 on the left-hand side of the machine frame 1 in the working direction A, on the inside of the side arm 3AA of the left-hand drive 3A.If a distribution device is provided on both the left and right side of the machine frame 1, the entire working width can be covered even with relatively compact distribution devices.

[0048] Fig. 9shows the control of the piston / cylinder arrangements of the distribution device 13 in a simplified schematic representation. The control system comprises a control unit 33, which can form an independent module or at least partially be a component of the central control unit (not shown) of the construction machine. The control unit 33 can, for example, have a general processor, a digital signal processor (DSP) for continuously processing digital signals, a microprocessor, an application-specific integrated circuit (ASIC), an integrated circuit consisting of logic elements (FPGA), or other integrated circuits (IC) or hardware components. A data processing program (software) can run on the hardware components to control the individual components.The control unit 33 interacts with a hydraulic unit 34 of a hydraulic system, which in turn interacts with the piston / cylinder assemblies 22, 23, 24, 31, 32 of the distribution device 13, so that the piston / cylinder assemblies are actuated in response to control commands from the control unit. Furthermore, the control system includes an input unit 35 for the machine operator, which can comprise at least one switch 35A, button 35B, joystick 35C, or touchscreen 35D. The input unit 35 is connected to the control unit 33 via a control line 36, which receives the output signals from the input unit.The control unit 33 is configured such that the respective piston / cylinder assemblies 22, 23, 24, 31, 32 are controlled depending on the output signals of the control unit, which correspond to the switching positions of operating elements, for example the position of a switch, button, or joystick, or the inputs on the touchscreen, in order to raise or lower the first and / or second boom component 15, 16 and / or to pivot the distributor arm 14 to the left or right. The control unit 33 is preferably configured such that by actuating an operating element, at least two piston / cylinder assemblies of the piston / cylinder assemblies 22, 23, 24, 31, 32 are actuated simultaneously, so that the distributor element 20 executes a movement along a predetermined path.In a preferred embodiment, for example, the first piston / cylinder arrangement 22 and the second piston / cylinder arrangement 23 are actuated simultaneously such that when the distributor arm 14 is extended, the distributor element 20 remains at a predetermined height. The third piston / cylinder arrangement 24 can be controlled such that the angular position of the distributor element 20 with respect to the ground surface remains unchanged regardless of the position of the first and / or second boom components 15, 16, so that, for example, the distributor element 20 always remains aligned parallel to the ground surface. This facilitates operation of the distributor element 20 by the machine operator.

[0049] The distributor arm 14 of the distribution device 13 can also have a parallelogram guide known to those skilled in the art, which is designed such that the boom components 15, 16 or the distributor element 20 carry out a predetermined movement, for example the distributor element 20 remains aligned parallel to the ground during a movement of the distributor arm 14.

Claims

1. Paver, in particular slipform paver, comprising a machine frame (1) carried by running gears (3A, 3B, 4A, 4B) and an installation device (12) for installing material, wherein at least one distribution device (13) is provided, which has a distribution element (20) arranged in front of the installation device (12) in the working direction (A) for distributing the material to be installed in front of the installation device (12), characterized in thatthe distribution device (13) has a distribution arm (14) which comprises at least two boom components (15, 16) which are connected to one another in an articulated manner, wherein the lower part of the distribution arm (14) is fastened to the machine frame (1) so as to be pivotable about an axis (18) which is substantially horizontal with respect to the working plane of the paver, and the distribution element (20) is fastened to the upper part of the distribution arm (14) so as to be pivotable about an axis (21) which is substantially horizontal with respect to the working plane of the paver, so that the distribution element (20) can be moved in front of the paving device in order to distribute the material to be paved by pivoting movements of the at least two boom components (15, 16).

2. Paver according to claim 1, characterized in that the distributor element (20) is a body designed in the manner of a cookie cutter, in particular as a circular, oval, rectangular or polygonal hollow body.

3. Paver according to claim 2, characterized in that the ratio between the maximum width and the maximum height of the hollow body is between 1.5 and 2.5, in particular between 1.7 and 2.

3.

4. Paver according to claim 2 or 3, characterized in that the distributor element (20) encloses a volume for receiving the material to be installed, which volume is between 0.1 and 1 m 3 , especially 0.2 and 0.4 m 3 , lies.

5. Paver according to one of claims 1 to 4, characterized in that at least one boom component of the at least two boom components (15, 16) is designed as a telescopic boom component.

6. Paver according to one of claims 1 to 5, characterized in that the lower part of the distributor arm (14) is pivotally attached to the machine frame (1) about an axis (30) which is substantially vertical with respect to the working plane of the paver.

7. Paver according to one of claims 1 to 6, characterized in thatthe machine frame (1) has a left frame part (11A) running in the working direction (A) and a right frame part (11B) running in the working direction, and the machine frame (1) has a frame part (11C) running transversely to the working direction.

8. Paver according to claim 7, characterized in that the frame part (11C) of the machine frame (1) running transversely to the working direction (A) is designed to be variable in length in the transverse direction.

9. Paver according to claim 7 or 8, characterized in that the lower part of the distributor arm (14) is fastened to the frame part (11C) running transversely to the working direction (B) centrally between the right and left frame parts (11A, 11B).

10. Paver according to claim 7 or 8, characterized in thatthe lower part of the distributor arm (14) is displaceably fastened to the frame part (11C) extending transversely to the working direction (A) between the right and left frame parts (11A, 11B) in a direction extending transversely to the working direction.

11. Paver according to one of claims 1 to 10, characterized in that the paver has two distribution devices (13`, 13") arranged at a distance from one another in the working direction (A) in front of the paving device (12) for distributing the material to be paved in front of the paving device (12).

12. Finisher according to one of claims 1 to 11, unless referred back to claim 11, characterized in that the lower part of the distributor arm (14) is fastened to the left or right side of the machine frame (1) in the working direction (A) in such a way that the at least two boom components (15, 16) of the distributor arm (14) extend in a direction transverse to the working direction.

13. Paver according to one of claims 1 to 12, characterized in that a first boom component (15) is pivotably connected to the machine frame (1) by means of a first piston / cylinder arrangement (22) about an axis (18) that is substantially horizontal with respect to the working plane, a second boom component (16) is pivotably connected to the first boom component (15) by means of a second piston / cylinder arrangement (23) about an axis (17) that is substantially horizontal with respect to the working plane, and the distributor element (20) is pivotably connected to the second boom component (16) by means of a third piston / cylinder arrangement (24).

14. Paver according to claim 13, characterized in thata control unit for actuating the piston / cylinder assemblies (22, 23, 24) is provided, which is configured such that by actuating an operating element at least two piston / cylinder assemblies of the piston / cylinder assemblies (22, 23, 24) are actuated simultaneously, so that the distributor element (20) executes a movement along a predetermined path.

15. Paver according to one of claims 1 to 14, characterized in that the first and / or second boom component (15, 16) is designed as a parallelogram guide, so that the distributor element (20) remains in a predetermined angular position during the pivoting movement of the distributor arm (14).

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