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 gear and an installation device for installing material.

[0002] Pavers are used for laying unbound and bound layers, such as asphalt or concrete. Slipform pavers, which are equipped with a slipform, are used for laying concrete slabs.

[0003] The well-known slipform pavers allow for particularly economical concrete placement. The concrete to be placed is either deposited directly in front of the slipform paver or conveyed to it from the side via a conveyor belt. To ensure even distribution of the concrete across the entire paving width, the slipform paver can be equipped with a distribution device, such as a distribution blade or auger. After distribution, the concrete is compacted homogeneously using electric or hydraulic vibrators. The slipform then shapes the concrete slab to a defined width and thickness as it moves 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 challenge lies in evenly distributing a sufficient quantity of material, such as concrete, across the paver's working direction. Generally, the material is unloaded from the side in front of the paver using an excavator, or delivered by truck and dumped in the direction of travel ahead of the paver. It is unavoidable that some material will accumulate, necessitating its even distribution across the entire working width.

[0006] EP 3 702 532 B1 describes a paver with a distribution device for distributing the material to be laid in a direction transverse to the working direction, which is arranged in front of the paving unit in the working direction. The paver has an upstream 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 in such a way that the material is transported from a section where the material height is greater than a target height to a section where the material height 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 by a linear guide, allowing the carriage to move in a direction transverse to the paver's working direction. Two distribution blades, pivotable about a horizontal axis and spaced apart from each other, are attached to the carriage. The distribution blades are plate-shaped or scoop-shaped elements. By moving the distribution blades transversely to the working direction, the material to be laid can be distributed across the entire working width of the paver.

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

[0009] One objective of the invention is also to create a distribution device that simplifies the modification 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 tracks and a material placement device, wherein at least one distribution device is provided which has a distribution element arranged in front of the placement device in the working direction for distributing the material to be placed in front of the placement device. The paver can be a so-called 4-track machine with a front left track, a front right track, a rear left track, and a rear right track, or a so-called 2-track machine with only a left and a right track. The tracks can be pivotally mounted on the machine frame so that they can be folded down by 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 articulated boom components, wherein the lower part or foot part of the distribution arm is pivotably mounted on the machine frame about an axis that is substantially horizontal with respect to the paver's working plane, and the distribution element is pivotably mounted on the upper part or head part of the distribution arm about an axis that is substantially horizontal with respect to the paver's working plane. 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 distribute the material to be paved across the paver's working width.

[0012] In this context, the working plane of the paver is understood to be the surface of the structure to be erected, for example, the surface of the concrete slab in the case of a slipform paver. If the paver is to be tilted, for example, to produce an inclined surface, the pivot axes will therefore not correspond to the horizontal relative to the ground 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 mounted to a support of the machine frame, such as a longitudinal beam or crossbeam. Suitable brackets that allow the distributor arm to pivot can also be used for this pivoting mounting.

[0014] The distributor arm allows the distributor element to move within a relatively large range of motion, enabling the material to be picked up and distributed across the entire working width of the paver. The distributor element can be moved not only horizontally but also vertically, i.e., up or down relative to the ground surface. This allows the distributor element to pick up and move the material not only from one side but also from above. This simplifies the distribution of the material across the entire working width.

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

[0016] The embodiments of the invention described below may include one or more of the features or combinations of features listed below. A feature designated by an indefinite article may also be present multiple times if the indefinite article is not to be understood as indicating only a single use. Designating features with a numeral, for example, "first and second," does not preclude the possibility that these features may be present a further number beyond the number indicated by the numeral. In the description of all embodiments, the term "may" is also to be understood as "preferably" or "advantageously."

[0017] One embodiment of the manifold features a special design for the distributor element that differs fundamentally from known plate-shaped distributor blades. In this embodiment, the distributor element is a body shaped like a cookie cutter. Consequently, the distributor element is open at the top and bottom, bounded only by a surrounding, closed side wall. The shape of the cutter can be arbitrary, as long as the surrounding wall can penetrate the material to be installed from above by a corresponding movement of the distributor arm or distributor element in a vertical direction, and can be engaged 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 trials, a distributor element in the form of a hollow cylinder or a polygonal hollow body has proven effective, as it can be inserted or pressed into the material to be installed with relatively low force, similar to a cutter. However, the distributor element of the slipform paver according to the invention can also be a conventional distributor blade.

[0018] The distributor element can pick up and move a specific quantity of material, determined by the volume enclosed by the distributor element. Compared to a plate-shaped distributor blade, which can only move the material to be installed, the distributor 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 upstream of the installation device, since a specific quantity of material can be captured and cannot be lost during the movement of the distributor element.

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

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

[0021] The range of motion of the distributor element can be further increased by using at least one of the two boom components as a telescopic boom component. Compared to a distributor arm with non-telescoping 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 motion of the distributor element can also be increased by mounting the lower part or foot part of the distributor arm pivotably on the machine frame about an axis that is essentially vertical with respect to the working plane of the machine, thereby achieving a further degree of freedom.

[0023] The machine frame of the machine according to the invention can have a left frame section extending in the working direction and a right frame section extending in the working direction, and the machine frame can have a frame section extending 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 construction of the machine allows a distribution device to be attached to the frame section extending transversely to the working direction, centrally between the right and left frame sections.

[0024] The central arrangement has the advantage that, with appropriate dimensioning, a single distribution unit is sufficient to cover the area in front of the paving unit across the entire working width of the paver. However, this generally requires that the distribution arm be pivotably mounted to the machine frame around a substantially vertical axis to cover the entire working width of the paver. Alternatively, the paver can have two distribution units positioned at a distance from each other in the working direction in front of the paving unit to distribute the material to be paved in the area in front of the paving unit.

[0025] The lower or base section of the distributor arm can also be attached to the left or right side of the machine frame in the direction of operation, for example, directly to the left or right frame section or via an intermediate part, such as 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 direction of operation. With appropriate dimensioning, a distributor unit on only one of the two sides may be sufficient to cover the entire area in front of the machine. However, distributor units can also be provided in the area of ​​both the left and right frame sections. These embodiments do not generally 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 with variable lengths in the transverse direction. Such frame sections are part of the prior art. The frame section can, for example, be designed so that it can be extended by means of suitable attachments or telescopic sections. With such a frame section, the distributor device according to the invention, which, unlike a distributor blade for covering the entire area in front of the machine, does not generally need to be mounted in a transversely movable manner, proves advantageous because a transversely movable carriage is not required, which would complicate the conversion work for increasing or decreasing the working width of the paver or necessitate further modifications to the machine frame.

[0027] Another embodiment provides that a first boom component is pivotably connected to the machine frame about an axis that is essentially horizontal with respect to the working plane by means of a first piston / cylinder arrangement, a second boom component is pivotally connected to the first boom component about an axis that is essentially horizontal with respect to the working plane by means of a second piston / cylinder arrangement, and the distributor element is pivotally 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 a control element, at least two piston / cylinder assemblies are actuated simultaneously, causing the distributor arm to execute a predetermined movement. In this context, a control unit is understood to be a device that, in conjunction with a hydraulic unit, controls the flow of hydraulic fluid to actuate 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 distributor element can be moved back and forth in a horizontal plane without having to operate multiple controls simultaneously to operate each boom component individually. For instance, the control unit can be configured so that the distributor element remains in a predefined angular position, particularly parallel to the ground, during the swiveling movement of the distributor arm, in order to move the material. This simplifies the operation of the paver. Such control systems 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] Exemplary embodiments of the invention are explained in more detail below 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. Fig. 1 In perspective view, Fig. 3A, the distributor element of the distributor device of Fig. 2 in perspective view, Fig. 3B the distributor element of the distributor device of Fig. 2 In the top view, Fig. 3C, a side view of the distributor element of the distributor device of Fig. 2 from the direction of arrow I, Fig. 3 Your side view of the distributor element of the distributor device from 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 distributor device, Fig. 5 a schematic representation of a further embodiment of the slipform paver according to the invention with a central arrangement of the distributor device, Fig. 6 a schematic representation of a slipform paver according to the invention with two off-center arranged distributor devices, Fig. 7 a schematic representation of a slipform paver according to the invention with a translational movement of the distributor device, Fig. 8 a schematic representation of a further embodiment of the slipform paver according to the invention with a lateral arrangement of the distributor device, and Fig. 9 the control of the distributor device in a schematic representation

[0033] Fig. 1 Figure 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, which is supported by a chassis 2. The chassis 2 comprises a front left track 3A and a front right track 3B in the working direction A, and a rear left track 4A and a rear right track 4B in the working direction A, all of which rest on the ground. The track 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 track units 3A, 3B, 4A, 4B are pivotably attached to the machine frame 1, so that they can be folded down by 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 Figure 1 shows the slipform paver in the working position, with the undercarriages 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 tracked undercarriages 3A, 3B also extend in working direction A.

[0034] The machine frame 1 comprises a left frame section 11A in the working direction A, a right frame section 11B, and a middle frame section 11C extending transversely to the working direction A. The middle frame section 11C can be lengthened 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 is a groove running transversely to the working direction A. Fig. 1 The largely concealed installation device 12 is arranged for the production of a concrete layer for a roadway. The installation device 12, which is a slipform in the case of the slipform paver, 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] Furthermore, the slipform paver includes a distribution device 13 for distributing the concrete to be placed in a direction transverse to the working direction A across the entire working width of the paver. The distribution device 13 is arranged in the working direction A in front of the slipform 12.

[0037] Fig. 1 shows an embodiment of the slipform paver with a distributor device 13 arranged centrally between the left and right frame parts 11A, 11B, which has a distributor 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, located on the machine frame side, and a second boom component 16 at the free end of the first boom component 15, which are pivotably connected to each other about an axis 17 horizontal to the working plane. The lower part or foot section 15A of the first boom component 15 is pivotably attached to a pivoting part 19 about an axis 18 horizontal to the working plane, and a distributor element 20 is pivotably attached to the upper part or head section 16A of the second boom component 16 about an axis 21 horizontal to the working plane.A first piston / cylinder assembly 22 is provided for actuating the first boom component 15, the piston 22A of which is articulated to the pivoting element 19 and the cylinder 22B of which is articulated to the first boom component 15. A second piston / cylinder assembly 23 is provided for actuating the second boom component 16, 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 assembly 22, the first boom component 15 can be raised or lowered relative to the ground surface. By retracting or extending the piston 23B of the second piston / cylinder assembly 23, the second boom component 16 can be pivoted. The distributor element 20 can be extended or retracted by retracting or extending the piston 23B of the second piston / cylinder assembly 23.The extension of the piston 24A of a third piston / cylinder assembly 24, whose cylinder 24B is articulated to the second boom component 16, is pivoted via a lever mechanism 27 comprising two levers 25, 26, which is designed such that the rotation angle of the distributor element 20 is reduced and the working torque is increased. Instead of a piston of a piston / cylinder assembly, a cylinder of the piston / cylinder assembly can also be articulated to the respective parts, or vice versa.

[0039] The Fig. 3A shows the distributor element in perspective view and Fig. 3B in a top view, enlarged. 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 distributor element 20 is designed in the form of a scoop, which can be used to pick up and move material, particularly concrete, located on the ground surface. In the present embodiment, the distributor element 20 is designed as a polygonal hollow body, which 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 welded together. However, the hollow body can also be, for example, a hollow cylinder.

[0040] The distributor element 20 is articulatedly attached to the second boom component 16 by a bracket 20B, which comprises two adjacent brackets 20BA spanning the hollow body. The structure is further reinforced by lateral supports 20BB, which engage the brackets 20BA and the side wall 20A.

[0041] The swivel part 19 is attached to a console 29 ( Fig. 1 ) pivotably mounted about an axis 30 vertical with respect to the working plane, which is arranged on the machine frame 1 centrally between the left and right frame parts 11A, 11B. On the right side of the console 29 in the working direction A, the piston 31A of a fourth piston / cylinder assembly 31 engages, and on the left side of the console 29 in the working direction A, the piston 32A of a fifth piston / cylinder assembly 32 engages. The in 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 pistons and cylinders can be interchanged when mounting the piston / cylinder assembly.

[0042] Fig. 4 shows a highly simplified schematic representation of the slipform paver from Fig. 1 In a top view, the corresponding parts are designated with the same reference numerals. The front side arms 3AA, 3BA of the running gear 3A to 4B, located in the working direction A, are in the working position. The centrally arranged distributor arm 14 of the distributor unit 13 can be pivoted to both sides within a wide range of motion B from a starting 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 greater range of motion can be achieved by designing at least one boom component 15, 16 as a telescopic boom component.

[0043] Fig. 5 Figure 1 shows a highly simplified schematic representation of the slipform paver, in which the first boom component 15 is telescopic. The corresponding parts are again labelled with the same reference numerals. The first boom component 15 consists of at least two interlocking hollow profiles 15A, 15B, which are connected by one or more Fig. 5 Only schematically represented piston / cylinder arrangements 15C can be extended and retracted to increase or decrease the range of motion B.

[0044] Fig. 6 shows a further embodiment that differs from the embodiment of Fig. 4 or 5, in that instead of a central distributor 13, two eccentrically arranged distributors 13' and 13" are attached to the central frame section 11C of the machine frame 1. The corresponding parts are again designated with the same reference numerals. The distributor arms 14', 14" of both distributors 13', 13" are each pivotably mounted on the machine frame 1 about a horizontal axis 30', 30". This embodiment allows a relatively large working range even if the boom components 15', 15", 16', 16", of the distributor 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 pick up the material. Since a linear guide is not required, the width of the machine frame can be relatively easily increased or decreased.

[0046] Fig. 7 shows an alternative embodiment that differs from the embodiment of Fig. 6 This design differs in that, instead of two off-center distributors spaced apart, only one distributor 13 is provided, which, however, is movable in a direction transverse to the working direction A of the slipform paver. A linear guide 31 with a slide 31A is provided on the central frame section 11C of the machine frame 1, which extends transversely to the working direction. The distributor arm 14 of the distributor 13 is attached to the slide 31A. The distributor arm 14 can be pivotally mounted on the slide 31A about a vertical axis 30‴. However, this is generally not necessary for a translational distributor in order to cover a large range of motion. This embodiment, however, requires modifications to the linear guide to change the working width of the slipform paver.

[0047] Fig. 8 Figure 1 shows a further alternative embodiment, which differs from the embodiments described above in that the distributor 13 is attached to the machine frame 1 such that its distributor arm 14 extends in a direction transverse to the working direction A. In this embodiment, the distributor arm is attached to the inside of the side arm 3BA of the right undercarriage 3B on the right side of the machine frame 1 in the working direction A. With sufficient dimensioning of the length of the boom components 15, 16, the working area B can extend over the entire working width. This embodiment can also have a distributor 13 on the left side of the machine frame 1 in the working direction A, on the inside of the side arm 3AA of the left undercarriage 3A.If a distribution device is provided on both the left and right sides of the machine frame 1, the entire working width can be covered even with relatively compact distribution devices.

[0048] Fig. 9Figure 1 shows a simplified schematic representation of the control of the piston / cylinder arrangements of the distributor device 13. The control system comprises a control unit 33, which can form an independent assembly or be at least partially part of the central control unit of the construction machine (not shown). The control unit 33 can, for example, include a general-purpose processor, a digital signal processor (DSP) for continuous processing of digital signals, a microprocessor, an application-specific integrated circuit (ASIC), a free form factor integrated circuit (FPGA), or other integrated circuits (ICs) 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 distributor device 13, so that the piston / cylinder assemblies are actuated depending on control commands from the control unit. The control system also includes an input unit 35 for the machine operator, which may comprise at least one switch 35A, push button 35B, joystick 35C, or touch-sensitive screen 35D (touchscreen). 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 actuated, 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 assembly 22 and the second piston / cylinder assembly 23 are actuated simultaneously such that the distributor element 20 remains at a predetermined height when the distributor arm 14 is extended. The third piston / cylinder assembly 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 component 15, 16, so that, for example, the distributor element 20 always remains 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 cantilever components 15, 16 or the distributor element 20 perform a predetermined movement, for example, the distributor element 20 remains aligned parallel to the ground when the distributor arm 14 moves.

Claims

1. Paver, in particular slipform paver, comprising a machine frame (1) supported by running gear (3A, 3B, 4A, 4B) and a paving device (12) for paving material, wherein at least one distribution device (13) is provided which has a distribution element (20) arranged 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), characterized by the fact thatThe distributor device (13) has a distributor arm (14) which comprises at least two articulated boom components (15, 16) connected to each other, wherein the lower part of the distributor arm (14) is pivotably attached to the machine frame (1) about an axis (18) which is substantially horizontal with respect to the working plane of the paver, and the distributor element (20) is pivotably attached to the upper part of the distributor arm (14) about an axis (21) which is substantially horizontal with respect to the working plane of the paver, so that the distributor element (20) can be moved in front of the paving device to distribute the material to be installed by pivoting movements of the at least two boom components (15, 16).

2. Manufacturer according to claim 1, characterized by the fact 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. Manufacturer according to claim 2, characterized by the fact 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. Manufacturer according to claim 2 or 3, characterized by the fact that the distribution element (20) includes a volume for receiving the material to be installed, which is between 0.1 and 1 m³ 3 , especially 0.2 and 0.4 m 3 , lies.

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

6. Manufacturer according to any one of claims 1 to 5, characterized by the fact that the lower part of the distributor arm (14) is pivotably attached to the machine frame (1) about an axis (30) which is essentially vertical with respect to the working plane of the paver.

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

8. Manufacturer according to claim 7, characterized by the fact that The frame part (11C) of the machine frame (1), which runs transversely to the working direction (A), is designed to be variable in length in the transverse direction.

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

10. Manufacturer according to claim 7 or 8, characterized by the fact thatthe lower part of the distributor arm (14) is slidably attached to the frame part (11C) running transversely to the working direction (A) between the right and left frame parts (11A, 11B) in a direction transverse to the working direction.

11. Manufacturer according to any one of claims 1 to 10, characterized by the fact that the paver has two distribution devices (13', 13") arranged at a distance from each other in the working direction (A) in front of the paving device (12) for distributing the material to be installed in front of the paving device (12).

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

13. Manufacturer according to any one of claims 1 to 12, characterized by the fact 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) which is essentially 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) which is essentially horizontal with respect to the working plane, and the distributor element (20) is pivotally connected to the second boom component (16) by means of a third piston / cylinder arrangement (24).

14. Manufacturer according to claim 13, characterized by the fact 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) performs a movement along a predetermined path.

15. Manufacturer according to any one of claims 1 to 14, characterized by the fact 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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