Paver

Abstract

The paver is provided with a machine frame supported by a walking mechanism and a paving device used for paving materials, at least one distributor device is arranged, and the distributor device is provided with a distributor element arranged in front of the paving device in the operation direction and used for distributing the materials to be paved in front of the paving device. The paver is characterized in that at least one distributor device (13) is provided with a distributor arm, the distributor arm comprises at least two cantilever components hinged to each other, and the lower portion of the distributor arm is fastened to a machine frame in a pivoted mode around the axis which is basically horizontal relative to the working plane of the paver. The distributor element is pivotably secured to the upper portion of the distributor arm about an axis that is substantially horizontal relative to a working plane of the paver. The distributor arm allows the distributor element to move in front of the laying device by pivotal movement of the at least two cantilever members to distribute the material to be laid over a working width of the paver.

Description

TECHNICAL FIELD

[0001] The utility model relates to a paver, in particular a slipform paver, which comprises a machine frame supported by a travel mechanism and a laying device for laying material. BACKGROUND

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

[0003] Known slipform pavers allow particularly economical concrete laying. The concrete to be laid is either laid directly in front of the slipform paver or transported from the side to the front of the paver via a conveyor belt. In order to distribute the concrete uniformly across the entire laying width, the slipform paver can have a distributor device, such as a distributor blade or a distributor drill. After distribution, the concrete is compacted uniformly using an electric or hydraulic vibrator. 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 10 200 6 010 793 A1 and WO 2012 / 155904 A2.

[0005] In practice, the problem is to distribute a sufficient amount of material, such as concrete, uniformly for laying perpendicular to the working direction of the paver. Typically, the material is unloaded from one side in front of the paver by an excavator or delivered by a truck and poured in front of the paver in the working direction. It is unavoidable that individual accumulations will form, and the material must therefore be distributed uniformly across the entire working width.

[0006] EP 3 702 532 B1 describes a paver with a distributor device for distributing the material to be laid in a direction extending transversely to the working direction, which is arranged in front of the laying device in the working direction. The paver is provided with a front monitoring device configured to generate height profile data or signals, which describe the height profile of the material deposited in front of the distributor device. Furthermore, a control device is provided, which interacts with the monitoring device and controls the distributor device such that material is transported from parts where the material height is greater than the target height to parts 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, having a carriage which is fastened to a machine frame by linear guides, so that the carriage can be moved in a direction which extends transversely to the working direction of the paver. Two distributor blades which are pivotable about a horizontal axis are fastened to the carriage and are arranged at a distance from one another. The distributor blades are plate-shaped elements or blade-shaped elements. By moving the distributor blades transversely to the working direction, the material to be laid can be distributed over the entire working width of the paver. Utility model content

[0008] The object of the utility model is to propose a paver which simplifies the laying process and which allows the distribution of the material to be laid over the entire working width to be improved. According to the utility model, this object is achieved by the following features.

[0009] A further object of the utility model is to propose a distributor device which simplifies the modification of the machine frame in order to change the working width of the paver.

[0010] The paver according to the utility model comprises a machine frame which is supported by running gear and a laying device for laying material, wherein at least one distributor device is provided, which has a distributor element which is arranged in front of the laying device in the working direction, for distributing the material to be laid in front of the laying device. The paver can be a so-called four-track machine (having a front left running gear and a front right running gear and a rear left running gear and a rear right running gear, viewed in the working direction) or the paver can be a so-called two-track machine (having only a left running gear and a right running gear). The running gears are pivotably fastened to the machine frame, so that they can be folded down by an angle of 90° into a transport position in order to be loaded onto a low loader.

[0011] The paver according to the utility model is characterized in that the at least one distributor device has a distributor arm which comprises at least two cantilever parts which are hinged to one another, wherein a lower part or foot part of the distributor arm is fastened to the machine frame so as to be pivotable about an axis which is substantially horizontal with respect to the working plane of the paver, and a distributor element is fastened to an upper part or head part of the distributor arm so as to be pivotable about an axis which is substantially horizontal with respect to the working plane of the paver. The distributor arm thus allows the distributor element to be moved in front of the laying device by a pivoting movement of the at least two cantilever parts, so as to be able to distribute the material to be laid over the working width of the paver.

[0012] In the present application, the working plane of the paver is understood to mean the surface of the structure to be established, for example the surface of the concrete mat in the case of a slipform paver. If the paver is angled to produce an inclined surface, for example, the pivot axis does not correspond to a horizontal plane relative to the ground surface.

[0013] Fastening the distributor arm to the machine frame is understood to mean that the distributor arm is supported by the machine frame. The distributor arm can be fastened to any part of the machine frame. For example, the distributor arm can be pivotably fastened to a member of the machine frame, for example a longitudinal member or a transverse member. Suitable brackets can also be used to pivotably fasten the distributor arm, which enables the distributor arm to be moved in a pivoting movement.

[0014] The distributor arm enables the distributor element to be moved in a relatively large movement range, so that the material to be laid can be captured and distributed over the entire working width of the paver. The distributor element can not only be moved in the plane of the terrain, but also in a vertical plane, i.e. moved upwards or downwards relative to the surface of the terrain, so that the distributor element can not only capture and move material to be laid on one side, but also penetrate the material from above. This simplifies the distribution of the material across the entire working width.

[0015] The control system of the distributor arm of the distributor device of the paver according to the utility model can interact with the front monitoring device known from EP 3702 532 B1 in order to control the distributor arm so that material is distributed in front of the paver. The known front monitoring device allows monitoring to be carried out in the working direction in a front part that is relatively far in front. In combination with the known monitoring device, the advantages of the distributor device of the paver according to the utility model are particularly suitable, because due to the large movement range of the distributor arm, the distributor device of the paver can also capture material that is monitored by the monitoring device, which is relatively far away from the laying device in the working direction.

[0016] The embodiments of the utility model described below can comprise one or more of the features mentioned below, or a combination of several features. If the indefinite article is not to be understood as an explicit reference to a single use, features specified with the indefinite article can also be present more than once. Features specified with numerical words, such as "first and second", do not exclude that the number of these features can be greater than the number indicated by the numerical words. In the description of all embodiments, the expression "may" is also to be understood as "preferably" or "advantageously".

[0017] One embodiment of a slipform paver provides a specific design of the distributor element which fundamentally differs from the known plate-shaped distribution blades. In this embodiment, the distributor element is a body which is designed as a cookie cutter. The distributor element is thus a body which is open at the top and at the bottom and is limited only by a circumferential closed side wall. The cookie cutter can in principle have any shape, as long as the circumferential wall can be penetrated from above into the material to be paved by a corresponding movement of the distributor arm or the distributor element in the vertical direction and can capture and move the material by a corresponding movement of the distributor arm or the distributor element in the horizontal direction. The distributor element can thus be designed as a hollow circular, oval, rectangular or polygonal body, for example. In tests, distributor elements in the form of hollow cylinders or hollow polygonal bodies have proven to be effective, which can be pushed or pressed into the material to be paved in the manner of a cookie cutter with relatively low force. However, the distributor element of the slipform paver according to the invention can also be a conventional distribution blade.

[0018] The distributor element can pick up and move an amount of material which is determined by the volume enclosed by the distributor element. In comparison to plate-shaped distribution blades which can only transfer the material to be paved, the distributor element according to the invention makes it easier to pick up the material to be paved at a specific location and to move the material to a specific location in front of the paving device, since the amount of material can be captured and is not lost during the movement of the distributor element.

[0019] In tests, it has proven particularly advantageous for practical applications if the ratio of the maximum width to the maximum height of the distributor element designed as a hollow body is between 1.5 and 2.5, in particular between 1.7 and 2.3. Furthermore, it has proven particularly advantageous if the hollow body encloses a volume of between 0.1 and 1 m 3 , in particular a volume of between 0.2 and 0.4 m 3 for receiving the material to be paved.

[0020] The distributor element can be designed in the form of an accessory for the distributor arm, so that the paver can be equipped with different designs, i.e. sizes or shapes, of the distributor element for each application. Suitable mounts for exchangeably fastening the distributor element belong to the prior art for this purpose.

[0021] By at least one of the at least two boom components being a telescopic boom component, the range of movement of the distributor element can be further increased. In comparison to a distributor arm with non-telescopic boom components, a more compact design can be achieved by at least one telescopic boom component with the same range of movement.

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

[0023] The machine frame of the paver according to the application can have a left frame part which extends in the working direction and a right frame part which extends in the working direction, and the machine frame can have a machine frame part which extends transversely to the working direction between the left frame part and the right frame part. The individual frame parts can in turn consist of a plurality of parts. This construction of the paver allows the distributor device to be fastened to the frame part which extends transversely to the working direction between the right frame part and the left frame part.

[0024] The central arrangement has the advantage that, at appropriate dimensions, a single distributor device is sufficient to cover the area in front of the laying device over the entire working width of the paver. However, this generally requires the distributor arm to be fastened pivotably to the machine frame about an axis which is essentially perpendicular, in order to be able to cover the entire working width of the paver. However, the paver can also have two distributor devices which are arranged in front of the laying device at a distance from one another in the working direction for distributing the material to be laid in front of the laying device.

[0025] The lower part or foot part of the distributor arm can also be fastened to the left or right side of the machine frame in the working direction, directly or via an intermediate part, for example a side arm of the running gear, for example to the left frame part or the right frame part, so that at least two cantilever parts of the distributor arm extend in a direction transversely to the working direction. If appropriately dimensioned, a distributor device on only one of the two sides is sufficient to cover the entire area in front of the paver. However, the distributor devices can also be provided in the region of the left frame part and the right frame part. These embodiments do not in principle require a pivoting movement of the distributor arm about a perpendicular axis, but can significantly increase the width of the area covered by the distributor element even with a pivoting movement about a small radius.

[0026] The length of the frame part of the machine frame which extends transversely to the working direction can be variable in the transverse direction. Such frame parts belong to the prior art. The frame part can for example be designed so as to be extendable using appropriate attachments or telescoping parts. In such frame parts, the distributor device according to the application does not in principle need to be fastened to the machine frame so as to move in the transverse direction compared to the distributor blades for covering the entire area in front, which has proven to be advantageous since no carriage which is movable in the transverse direction is required (which would lead to a complex modification of the working width of the paver, either by increasing or reducing it, or to the need for further changes to the machine frame).

[0027] Another embodiment provides that the first boom member is articulated to the machine frame by a first piston / cylinder arrangement so as to be pivotable about an axis which is essentially horizontal relative to the working plane, the second boom member is articulated to the first boom member by a second piston / cylinder arrangement so as to be pivotable about an axis which is essentially horizontal relative to the working plane, and the distributor element is pivotally articulated to the second piston / cylinder arrangement by a third piston / cylinder arrangement.

[0028] The control unit for actuating the piston / cylinder arrangements can be configured to, by actuating the operating element, simultaneously actuate at least two of the piston / cylinder arrangements so that the distributor arm performs a predetermined movement. In the present application, a control unit is understood to be a device which, in conjunction with a hydraulic unit, controls the inflow or outflow of pressure medium to actuate the piston / cylinder arrangements, for example control valves in a hydraulic system.

[0029] For example, the two boom members can be moved so that, for example, the distributor element can be moved back and forth in a horizontal plane without having to operate multiple operating elements simultaneously in order to control each boom member individually. For example, the control unit can be configured to, during the pivoting movement of the distributor arm, keep the distributor element in a predetermined angular position, in particular in a position parallel to the ground, in order to be able to move the material. This simplifies the operation of the paver. Such a control system is per se known from the prior art.

[0030] Another embodiment provides that the first and / or second boom member is designed as a parallelogram guide so that, during the pivoting movement of the distributor arm, the distributor element is kept in a predetermined angular position. BRIEF DESCRIPTION OF DRAWINGS

[0031] Embodiments of the present application will be explained in more detail below with reference to the drawings.

[0032] In the drawings:

[0033] Figure 1 is a perspective view of an embodiment of a slipform paver according to the present application;

[0034] Figure 2 is a perspective view of a distributor arm of a distributor device of a slipform paver according to the present application from Figure 1

[0035] Figure 3A is a perspective view of a distributor element of a distributor device from Figure 2

[0036] Figure 3B is a plan view of a distributor element of a distributor device from Figure 2

[0037] Figure 3C is a plan view of a distributor element of a distributor device from​​​Figure 2 Side view of the distributor element of the distributor device from the direction of arrow I;

[0038] Figure 3D Figure 2 Side view of the distributor element of the distributor device from the direction of arrow II;

[0039] Figure 4 Schematic view of a slipform paver according to the present utility model, which has a central arrangement of distributor devices;

[0040] Figure 5 Schematic view of another embodiment of a slipform paver according to the present utility model, which has a central arrangement of distributor devices;

[0041] Figure 6 Schematic view of a slipform paver according to the present utility model, in which two distributor devices are arranged eccentrically;

[0042] Figure 7 Schematic view of a slipform paver according to the present utility model, which has a translational movement of distributor devices;

[0043] Figure 8 Schematic view of another embodiment of a slipform paver according to the present utility model, which has a lateral arrangement of distributor devices;

[0044] Figure 9 Schematic view of a control system of a distributor device. DETAILED DESCRIPTION

[0045] Figure 1 is a perspective view of a slipform paver as an example of a self-propelled construction machine. The slipform paver has a machine frame 1 which is supported by a travel mechanism 2. The travel mechanism 2 comprises a left front track 3A and a right front track 3B along the working direction A, and a left rear track 4A and a right rear track 4B along the working direction A, which rest on the ground surface. The tracks 3A, 3B, 4A, 4B are fastened to the machine frame 1 by means of a left front lifting device 5A and a right front lifting device 5B, and a left rear lifting device 6A and a right rear lifting device 6B, so that the machine frame 1 can be raised or lowered relative to the ground surface. The tracks 3A, 3B, 4A, 4B are fastened to the machine frame 1 pivotally, so that the tracks 3A, 3B, 4A, 4B can be folded down into a transport position at an angle of 90° in order to be loaded onto a low loader. The pivotal movement of the tracks 3A, 3B, 4A, 4B is performed by means of a piston / cylinder arrangement 7, 8, 9, 10. Figure 1 ​A slipform paver is shown in a working position, in which the travel mechanism is aligned in the working direction A. The following description relates to this position. In this position, the left front side arms 3AA and the right front side arms 3BA of the left front track 3A and the right front track 3B also extend in the working direction A.

[0046] The machine frame 1 comprises, in the working direction A, a left frame part 11A, a right frame part 11B and a middle frame part 11C extending transversely to the working direction A. The middle frame part 11C can be extended or shortened to change the working width of the slipform paver. For this purpose, separate frame pieces 11CA, 11CB, 11CC can be inserted into or removed from the middle frame part 11C.

[0047] A paving device 12 (mostly hidden in Figure 1 Fig. 2) for producing a concrete layer for a road is arranged between the outer frame parts 11A, 11B and extends transversely to the working direction A. The paving device 12 is a slipform of the slipform paver, which also has a variable working width, which can be adjusted, for example, by inserting and removing individual slipform segments. Such a slipform is known from the prior art.

[0048] In addition, the slipform paver comprises a distributor device 13 for distributing the concrete to be paved over the entire working width of the paver in a direction extending transversely to the working direction A. The distributor device 13 is arranged in front of the slipform 12 in the working direction A.

[0049] Figure 1 An embodiment of the slipform paver is shown, in which the distributor device 13 is arranged in the middle between the left frame part 11A and the right frame part 11B, the distributor device 13 having a distributor arm 14. Figure 2 An enlarged perspective view of the distributor arm 14 is shown.

[0050] The distributor arm 14 comprises a first cantilever part 15 on the machine frame side and a second cantilever part 16 at the free end of the first cantilever part 15, which are pivotably connected to each other about an axis 17 which is horizontal relative to the working plane. A lower part or foot part 15A of the first cantilever part 15 is pivotably fastened to a pivot part 19 about an axis 18 which is horizontal relative to the working plane, and a distributor element 20 is pivotably fastened to an upper part or head part 16A of the second cantilever part 16 about an axis 21 which is horizontal relative to the working plane. In order to actuate the first cantilever part 15, a first piston / cylinder arrangement 22 is provided, the piston 22A of which is articulated to the pivot part 19 and the cylinder 22B of which is articulated to the first cantilever part 15, and in order to actuate the second cantilever part 16, a second piston / cylinder arrangement 23 is provided, the cylinder 23A of which is articulated to the first cantilever part 15 and the piston 23B of which is articulated to the second cantilever part 16. By retracting and extending the piston 22A of the first piston / cylinder arrangement 22, the first cantilever part 15 can be raised and lowered relative to the ground surface, and by retracting and extending the piston 23B of the second piston / cylinder arrangement 23, the second cantilever part 16 can be pivoted. The distributor element 20 can be pivoted by retracting or extending the piston 24A of a third piston / cylinder arrangement 24, the cylinder 24B of which is articulated to the second cantilever part 16 by means of a lever mechanism 27 comprising two levers 25, 26, which mechanism is designed such that the angle of rotation of the distributor element 20 is reduced and the working torque is increased. Instead of the piston of the piston / cylinder arrangement, the cylinder of the piston / cylinder arrangement can also be articulated to each part, or vice versa.

[0051] Figure 3A is a perspective view of the distributor element, Figure 3B is an enlarged plan view of the distributor element. Figure 3C and 3D show different side views of the distributor element from the direction of the arrows I Figure 1 and II Figure 3C and II Figure 3D The distributor element 20 is designed like a cookie cutter by which material on the ground surface, in particular concrete, can be picked up and moved. In the present embodiment, the distributor element 20 is designed like a hollow polygonal body which is open at the top and at the bottom. The side walls 20A of the hollow body can be made relatively easily from a plurality of rectangular steel plates which are welded together. However, the hollow body can also be, for example, a hollow cylinder.

[0052] The distributor element 20 is articulated to the second cantilever part 16 by means of a mounting 20B which comprises two legs 20BA which are arranged next to each other across the hollow body. This structure is further reinforced by lateral supports 20BB which engage the legs 20BA and the side walls 20A.

[0053] The pivot part 19 is pivotably mounted on a bracket 29 about an axis 30 perpendicular in relation to the working plane (A) which is arranged on the machine frame 1 between the left frame part 11A and the right frame part 1 IB. In the working direction A, the piston 31A of the fourth piston / cylinder arrangement 31 engages with the right side of the bracket 29 and in the working direction A, the piston 32A of the fifth piston / cylinder arrangement 32 engages with the left side of the bracket 29. Figure 1 The cylinders of the piston / cylinder arrangements 31 and 32 which are hidden by other components are connected to the machine frame parts of the machine frame 1. By actuating the fourth piston / cylinder arrangement 31 and the fifth piston / cylinder arrangement 32, the pivot part 29 can be pivoted to the right or to the left in the working direction A. Here, the pistons and cylinders can also be exchanged again when the piston / cylinder arrangements are fastened. Figure 1

[0054] Figure 4 In plan view Figure 1 A highly simplified schematic representation of a slipform paver, wherein the respective parts are provided with the same reference signs. In the working direction A, the front side arms 3AA, 3BA of the walking mechanisms 3A to 4B are in the working position. The centrally arranged distributor arm 14 of the distributor device 13 can be pivoted from a starting position which extends in the working direction A to both sides within a wide range of movement B. The range of movement B or working range of the distributor arm 14 is limited by the length of the cantilever parts 15, 16 and by their pivoting angle. By designing at least one cantilever part 15, 16 as a telescopic cantilever part, an even greater range of movement can be achieved.

[0055] Figure 5 A highly simplified schematic representation of a slipform paver is shown, wherein the first cantilever part 15 is telescopic. The respective parts are again provided with the same reference signs. The first cantilever part 15 is composed of at least two hollow profiles 15A, 15B which extend inside one another and can be retracted and extended by one or more piston / cylinder arrangements 15C (only schematically shown in Figure 5 ).

[0056] Figure 6 Another embodiment is shown which is similar to Figure 4 or Figure 5 ​The embodiment in FIG. 1 differs in that, instead of a central distributor device 13, two eccentric distributor devices 13' and 13" arranged at a distance from one another are fastened to the central machine frame part 11C of the machine frame 1. Corresponding parts are again provided with the same reference numerals. The distributor arms 14', 14" of the two distributor devices 13', 13" are each pivotably mounted on the machine frame 1 about a horizontal axis 30', 30". Even though the cantilever parts 15', 15", 16', 16" of the distributor arms 14', 14" are relatively short, this embodiment allows a relatively large working range.

[0057] The above embodiment has the advantage that a relatively large working envelope can be created without the need for linear guides, as is the case with conventional distributor arrangements with distributor blades that move across the entire working width of the slipform paver to pick up material. Since linear guides are not required, the width of the machine frame can be increased or decreased relatively easily.

[0058] Figure 7 An alternative embodiment is shown, which is Figure 6 The embodiment in differs in that, instead of two eccentric distributor devices arranged at a distance from each other, only one distributor device 13 is provided which, however, can be moved in a direction extending transversely to the working direction A of the slipform paver. A linear guide 31 with a carriage 31A is arranged on the middle frame part 11C of the machine frame 1, running transversely to the working direction, to which carriage a distributor arm 14 of the distributor device 13 is fastened. The distributor arm 14 is fastened to the carriage 31A pivotably about a vertical axis 30'". In a translatory distributor device, however, this is generally not necessary to cover a large range of movement. However, this embodiment requires modifications to the linear guide in order to vary the working width of the slipform paver.

[0059] Figure 8 Another alternative embodiment is shown, which differs from the above-described embodiment in that the distributor device 13 is fastened to the machine frame 1 so that its distributor arm 14 extends transversely to the working direction A. In this embodiment, the distributor arm is fastened to the inside of the side arm 3BA of the right chassis 3B, located on the right side of the machine frame 1 in the working direction A. If the length dimensions of the cantilevered arm members 15 and 16 are sufficiently large, the working range B can extend across the entire working width. This embodiment can also include the distributor device 13 on the inside of the side arm 3AA of the left chassis 3A, located on the left side of the machine frame 1 in the working direction A. If the distributor device is arranged on both the left and right sides of the machine frame 1, the entire working width can be covered even with a relatively compact distributor device.

[0060] Figure 9A simplified schematic of a control system of the piston / cylinder arrangement of the distributor device 13 is shown. The control system comprises a control unit 33, which can form a separate component or at least a part of it can be a part of a central control unit (not shown) of the construction machine. The control unit 33 can have, for example, a general-purpose processor, a digital signal processor (DSP) for continuous processing of digital signals, a microprocessor, an application-specific integrated circuit (ASIC), a field-programmable gate array (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 the hydraulic system, which in turn interacts with the piston / cylinder arrangements 22, 23, 24, 31, 32 of the distributor device 13, so that the piston / cylinder arrangements are actuated in dependence on control commands from the control unit. In addition, the control system comprises an input unit 35 for the machine operator, which can comprise at least one switch 35A, a button 35B, a joystick 35C or a touch-sensitive screen 35D (touch screen). The input unit 35 is connected to the control unit 33 via control lines 36, which receive output signals from the input unit. The control unit 33 is configured to control the relevant piston / cylinder arrangements 22, 23, 24, 31, 32 in dependence on the output signals from the control unit, which correspond to the switching position of the operating element, for example the position of a switch, a button or a joystick or an input on a touch-sensitive screen (touch screen), in order to raise or lower the first boom part 15 and / or the second boom part 16 and / or to pivot the distributor arm 14 to the left or to the right. The control unit 33 is preferably configured to actuate at least two of the piston / cylinder arrangements 22, 23, 24, 31, 32 simultaneously by actuating the operating element, and thus the distributor element 20 performs 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, so that the distributor element 20 remains at a predetermined height when the distributor arm 14 is extended. The third piston / cylinder arrangement 24 can be actuated so that the angular position of the distributor element 20 relative to the ground surface remains unchanged regardless of the position of the first boom part 15 and / or the second boom part 16, so that, for example, the distributor element 20 always remains parallel to the ground surface. This makes it easier for the machine operator to operate the distributor element 20.

[0061] The distributor arm 14 of the distributor device 13 can also have a parallelogram guide known to a person skilled in the art, which is designed so that the boom parts 15, 16 or the distributor element 20 make / perform a predetermined movement, for example the distributor element 20 remains parallel to the ground when the distributor arm 14 is moved.

Claims

1. A paving machine comprising a machine frame (1) supported by a running gear (3A, 3B, 4A, 4B) and paving means (12) for laying material, provided with at least one distributor device (13) having a distributor element (20) arranged in front of the paving means (12) in a working direction A for distributing material to be laid in front of the paving means (12); characterized in that the distributor device (13) has a distributor arm (14) comprising at least two cantilever parts (15, 16) hinged to each other, a lower part of the distributor arm (14) is pivotably fastened to the machine frame (1) about a first axis (18) which is substantially horizontal relative to a working plane of the paving machine, and the distributor element (20) is pivotably fastened to an upper part of the distributor arm (14) about a second axis (21) which is substantially horizontal relative to the working plane of the paving machine, so that the distributor element (20) can be moved in front of the paving means to distribute material to be laid by pivotal movement of the at least two cantilever parts (15, 16).

2. The paver of claim 1, wherein, The distributor element (20) is a body which is open at the top and at the bottom and is limited only by a closed circumferential wall, the circumferential wall of which penetrates from above into the material to be laid by corresponding movement of the distributor arm or distributor element in the vertical direction and captures and moves the material by corresponding movement of the distributor arm or distributor element in the horizontal direction.

3. The paver of claim 2, wherein, The distributor element (20) is designed as a hollow body which is circular, oval, or polygonal.

4. The paver of claim 3, wherein, The ratio of the maximum width to the maximum height of the hollow body is between 1.5 and 2.

5.

5. The paver of claim 3 or 4, characterized in that The distributor element (20) encloses a volume of between 0.1 m 3 and 1 m 3 for receiving the material to be laid.

6. The paver of any one of claims 1 to 4, characterized in that, At least one of the at least two cantilever parts (15, 16) is designed as a telescopic cantilever part.

7. The paver of any one of claims 1 to 4, characterized in that, The lower part of the distributor arm (14) is pivotably fastened to the machine frame (1) about an axis (30) which is substantially perpendicular relative to the working plane of the paving machine.

8. The paver of any one of claims 1 to 4, characterized in that, The machine frame (1) has a left frame part (11A) which extends in the working direction A and a right frame part (11B) which extends in the working direction, and the machine frame (1) has a frame part (11C) which extends transversely to the working direction.

9. The paver of claim 8, wherein, The frame part (11C) of the machine frame (1) which extends transversely to the working direction A has a variable length in the transverse direction.

10. The paver of claim 8, wherein, The lower part of the distributor arm (14) is fastened to the frame part (11C) which extends transversely to the working direction A in the middle between the left frame part (11A) and the right frame part (11B).

11. The spreader of claim 8, wherein, The lower part of the distributor arm (14) is fastened to the frame part (11C) which extends transversely to the working direction A to be movable in a direction extending transversely to the working direction between the left frame part (11A) and the right frame part (11B).

12. The paver of any one of claims 1 to 4, characterized by The paver has two distributor devices (13', 13") arranged at a distance from each other in front of the laying device (12) in the working direction A for distributing material to be laid in front of the laying device (12).

13. The paver of any one of claims 1 to 4, characterized by, A 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, so that at least two cantilever parts (15, 16) of the distributor arm (14) extend in a direction extending transversely to the working direction.

14. The paver of any one of claims 1 to 4, characterized by, A first cantilever part (15) is pivotably hinged to the machine frame (1) about a first axis (18) which is essentially horizontal relative to the working plane by means of a first piston cylinder arrangement (22), a second cantilever part (16) is pivotably hinged to the first cantilever part (15) about a third axis (17) which is essentially horizontal relative to the working plane by means of a second piston cylinder arrangement (23), and the distributor element (20) is pivotably hinged to the second cantilever part (16) by means of a third piston cylinder arrangement (24).

15. The paver of claim 14, wherein, A control unit for actuating the piston cylinder arrangements (22, 23, 24) is provided, which is configured to actuate at least two of the piston cylinder arrangements (22, 23, 24) simultaneously by actuating an operating element, and thus the distributor element (20) performs a movement along a predetermined path.

16. The paver of claim 14, wherein, The first cantilever part (15) and / or the second cantilever part (16) are designed as parallelogram guides, so that the distributor element (20) remains in a predetermined angular position during the pivoting movement of the distributor arm (14).

17. The spreader of claim 1, wherein, The paver is a slipform paver.

18. The paver of claim 4, wherein, The ratio of the maximum width to the maximum height of the hollow body part is between 1.7 and 2.

3.

19. The paver of claim 5, wherein, The distributor element (20) encloses a volume of between 0.2 m 3 and 0.4 m 3 .

20. The spreader of claim 3, wherein, The distributor element (20) is designed as a rectangular hollow body part.

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