LOCKING KINEMATICS FOR A LIMITING PLATE OF A ROAD PAVER

Abstract

A limiting plate assembly for a road paver includes a limiting plate, swiveling device, and locking device. The limiting plate is attached to a component of the road paver via the swiveling device. The limiting plate is rotatable about the swiveling device between a minimum limiting plate position and a maximum limiting plate position. The locking device is adapted to adopt a first locking position and a second locking position. The locking device is adapted, in the first locking position, to block the rotation of the limiting plate about the swiveling device in the direction of the minimum limiting plate position, when the limiting plate is in a first limiting plate position and, in the second locking position, to block the rotation of the limiting plate about the swiveling device in the direction of the maximum limiting plate position, when the limiting plate is in a second limiting plate position.

Claims

1. A limiting plate assembly for a road paver, the assembly comprising: a limiting plate; a swiveling device; and a locking device; wherein the limiting plate is attached to a component of the road paver via the swiveling device, wherein the limiting plate is rotatable about the swiveling device between a minimum limiting plate position and a maximum limiting plate position, wherein the locking device is adapted to adopt a first locking position and a second locking position, and wherein the locking device is adapted, in the first locking position, to block rotation of the limiting plate about the swiveling device toward the minimum limiting plate position when the limiting plate is in a first limiting plate position, and in the second locking position, to block the rotation of the limiting plate around the swiveling device toward the maximum limiting plate position when the limiting plate is in a second limiting plate position.

2. The limiting plate assembly according to claim 1, wherein the locking device is adapted to adopt a third locking position, wherein the locking device is adapted, in the third locking position, to block the rotation of the limiting plate about the swiveling device in the direction of the maximum limiting plate position when the limiting plate is in a third limiting plate position.

3. The limiting plate assembly according to claim 2, wherein the locking device is adapted, in the second locking position, to block the rotation of the limiting plate about the swiveling device in the direction of the minimum limiting plate position when the limiting plate is in a fourth limiting plate position.

4. The limiting plate assembly according to claim 2, wherein the limiting plate in the first limiting plate position has a first angle to the paving direction of the road paver, wherein, when the locking device is in the second locking position, the limiting plate is rotatable between a second angle and a third angle relative to the paving direction of the road paver, wherein the limiting plate in the third limiting plate position has the third angle to the paving direction of the road paver, wherein the second angle is located between the first angle and the third angle.

5. The limiting plate assembly according to claim 3, wherein the limiting plate in the first limiting plate position has a first angle to the paving direction of the road paver, wherein, when the locking device is in the second locking position, the limiting plate is rotatable between a second angle and a third angle relative to the paving direction of the road paver, wherein the limiting plate in the third limiting plate position has the third angle to the paving direction of the road paver, wherein the second angle is located between the first angle and the third angle.

6. The limiting plate assembly according to claim 1, wherein the locking device comprises a latch which is adapted to adopt the first locking position and the second locking position, wherein the latch is held in the first locking position and the second locking position by its own weight.

7. The limiting plate assembly according to claim 2, wherein the locking device comprises a latch which is adapted to adopt the first locking position and the second locking position, wherein the latch is held in the first locking position and the second locking position by its own weight.

8. The limiting plate assembly according to claim 3, wherein the locking device comprises a latch which is adapted to adopt the first locking position and the second locking position, wherein the latch is held in the first locking position and the second locking position by its own weight.

9. The limiting plate assembly according to claim 4, wherein the locking device comprises a latch which is adapted to adopt the first locking position and the second locking position, wherein the latch is held in the first locking position and the second locking position by its own weight.

10. The limiting plate assembly according to claim 6, wherein the latch is connected to the limiting plate, wherein in the first locking position, when the limiting plate is in the first limiting plate position, the latch abuts with a first surface against a limit stop of the road paver, so that a rotation of the limiting plate in the direction of the minimum limiting plate position is prevented by the latch, and/or in the second locking position, when the limiting plate is in the second limiting plate position, the latch abuts with a second surface against a limit stop of the road paver, so that a rotation of the limiting plate in the direction of the maximum limiting plate position is prevented by the latch.

11. The limiting plate assembly according to claim 7, wherein the latch is adapted to adopt the third locking position, wherein in the third locking position, when the limiting plate is in the third limiting plate position, the latch abuts with a third surface against a limit stop of the road paver, so that a rotation of the limiting plate in the direction of the maximum limiting plate position is prevented by the latch.

12. The limiting plate assembly according to claim 6, wherein the latch is connected to a component of the road paver, wherein in the first locking position, when the limiting plate is in the first limiting plate position, the latch abuts with a first surface against a limit stop of the limiting plate, so that a rotation of the limiting plate in the direction of the minimum limiting plate position is prevented by the latch, and/or in the second locking position, when the limiting plate is in the second limiting plate position, the latch abuts with a second surface against a limit stop of the limiting plate, so that a rotation of the limiting plate in the direction of the maximum limiting plate position is prevented by the latch.

13. The limiting plate assembly according to claim 1, wherein the locking device is adapted to adopt an unlocking position, wherein, when the locking device is in the unlocking position, the limiting plate is freely rotatable about the swiveling device between the minimum limiting plate position and the maximum limiting plate position.

14. The limiting plate assembly according to claim 1, wherein the limiting plate assembly comprises a pivoting apparatus, wherein the pivoting apparatus is adapted to rotate the limiting plate about the swiveling device, wherein the pivoting apparatus comprises a hydraulic cylinder and/or an electric drive.

15. A road paver comprising: a screed assembly; a transverse distribution device adapted to distribute paving material transversely to a paving direction of the road paver; and a limiting plate assembly according to claim 1; wherein the limiting plate assembly is arranged in front of the transverse distribution device in the paving direction.

16. A locking kinematics for a pivotable component of a construction machine, the pivotable component comprising a limiting plate assembly according to claim 1, the locking kinematics comprising: at least one locking component, which has a first limit stop, a second limit stop and a third limit stop; and at least one latch extending substantially along an axial direction between a first distal end and a second distal end; wherein the latch has an elongated hole through which the latch is rotatably attached to the pivotable component via a fastener, wherein the latch has a protrusion in the thickness direction at the first distal end, wherein the protrusion has a slanted surface on the side facing away from the second distal end, wherein the latch is displaceable into a first locking position, a second locking position and a third locking position, wherein, in the first locking position, a surface of the protrusion facing the second distal end abuts against the first limit stop, wherein in the second locking position the slanted surface abuts against the second limit stop, and wherein, in the third locking position, a surface of the protrusion facing the pivotable component abuts against the third limit stop.

17. The locking kinematics according to claim 16, wherein, when the latch is in the first locking position, the pivotable component is movable between a first swiveling angle and a second swiveling angle, wherein, when the latch is in the second locking position, the pivotable component is movable between a third swiveling angle and a fourth swiveling angle, and/or wherein, when the latch is in the third locking position, the pivotable component is movable between the fourth swiveling angle and a fifth swiveling angle.

18. A method for locking a limiting plate assembly for a road paver using the locking kinematics according to claim 16.

19. A method for locking a limiting plate assembly for a road paver using the locking kinematics according to claim 17.

20. A method for pivoting a limiting plate of a road paver comprising: moving a locking device of the road paver into an unlocking position so that the limiting plate is pivotable between a minimum limiting plate position and a maximum limiting plate position; pivoting the limiting plate into a limiting plate position which is located between the minimum limiting plate position and the maximum limiting plate position; and moving the locking device into a locking position so that the limiting plate is pivotable between the minimum limiting plate position and an intermediate limiting plate position, wherein the intermediate limiting plate position is located between the minimum limiting plate position and the maximum limiting plate position.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0078] FIG. 1 shows a schematic side view of a road paver with a limiting plate assembly according to an embodiment of the disclosure;

[0079] FIG. 2 shows a schematic top view of a road paver with a limiting plate assembly according to an embodiment of the disclosure;

[0080] FIG. 3 shows a schematic front view of a section of the limiting plate device from FIG. 2;

[0081] FIG. 4 shows a schematic top view of a limiting plate assembly according to an embodiment of the disclosure;

[0082] FIG. 5 shows a detailed view of a latch according to an embodiment of the disclosure;

[0083] FIG. 6 shows a detailed view of a locking device according to an embodiment of the disclosure in the unlocking position;

[0084] FIG. 7 shows a detailed view of the locking device of FIG. 5 in a first locking position.

[0085] FIG. 8 shows a detailed view of the locking device of FIG. 5 in a second locking position; and

[0086] FIG. 9 shows a detailed view of the locking device of FIG. 5 in a third locking position.

DETAILED DESCRIPTION

[0087] FIG. 1 shows a road paver 1 according to an embodiment of the disclosure. The road paver 1 comprises a towing vehicle 2 and a screed assembly 3. The screed assembly 3 is arranged behind the towing vehicle 2 with respect to the paving direction 100. The screed assembly 3 is only schematically displaced in FIG. 1. A material hopper 4 for receiving paving material is arranged in the front area of the road paver 1. The paving material, also referred to as paving goods, is transported to the rear by a material transport device of the towing vehicle 2 against the paving direction 100 and provided to the screed assembly 3. A transverse distribution device 5 is provided in the rear area of the towing vehicle 2, which distributes the paving material orthogonally to the paving direction 100 in front of the screed assembly 3. A limiting plate device 6 with at least one limiting plate assembly 7 is arranged in front of the transverse distribution device 5 in the paving direction 100. The limiting plate device 6 prevents the paving material from deviating in the direction of the paving direction 100.

[0088] FIG. 2 shows a top view of a road paver 1 according to an embodiment of the disclosure. The screed assembly 3 comprises a base screed 8. The base screed has a base screed operating width 201. The base screed operating width 201 may be the extension of the base screed 8 in the transverse direction 200. The transverse direction 200 extends orthogonally to the paving direction 100. The screed assembly 3 may additionally have extending screeds 9. The total operating width 202 is made up of the base screed 8 and the extending screeds 9. The extending screeds 9 may be adapted to be movable relative to the base screed 8 in the transverse direction 200. This allows the total operating width 202 to be varied. The screed assembly 3 may furthermore have side shields 10. The side shields 10 extend in particular in the paving direction 100 and prevent the paving material from being distributed in areas that are laterally outside the screed assembly 3.

[0089] The transverse distribution device 5 is arranged in front of the screed assembly 3 in the paving direction 100. The limiting plate device 6 is arranged in front of the transverse distribution device 5 in the paving direction 100. The limiting plate device 6 has a limiting plate assembly 7. The limiting plate assembly 7 has a pivotable limiting plate 11. The limiting plate 11 is rotatable about a swiveling device 12, in particular about a vertical axis.

[0090] The limiting plate device 6 may have a base limiting plate 13. The base limiting plate 13 extends substantially in the transverse direction 200. The limiting plate device 6 may additionally comprise an extendable limiting plate 14. The extendable limiting plate 14 may be moved in the transverse direction 200 relative to the base limiting plate 13 via a traversing device 15, for example a hydraulic cylinder or an electric drive. The laterally extendable limiting plate 14 may be used to vary the effective width of the limiting plate device 6. The limiting plate device 6 may have an intermediate limiting plate 16. The intermediate limiting plate 16 may be arranged between the base limiting plate 13 and the extendable limiting plate 14. The extendable limiting plate 14 may be attached to the base limiting plate 13 or the intermediate limiting plate 16. The traversing device 15 may be attached to the base limiting plate 13 or the intermediate limiting plate 16.

[0091] The swiveling device 12 may be attached to the base limiting plate 13, the extendable limiting plate 14 or the intermediate limiting plate 16. The pivotable limiting plate 11 may therefore be rotated relative to the base limiting plate 13, the extendable limiting plate 14 or the intermediate limiting plate 16.

[0092] The limiting plate device 6 may have two limiting plate assemblies 7, as shown in FIG. 2. The two limiting plate assemblies 7 may advantageously be arranged respectively on the left and right side of the road paver 1. The limiting plate device 6 may have two extendable limiting plates 14, two traversing devices 15 and two intermediate limiting plates 16, as shown in FIG. 2. Advantageously, these may each be arranged on the left and right side of the road paver 1.

[0093] FIG. 3 shows a front view of the limiting plate device 6 of FIG. 2. The limiting plate device 6 comprises the base limiting plate 13, to which the intermediate limiting plate 16 is attached laterally in the transverse direction 200. The traversing device 15 is attached to the intermediate limiting plate 16 and is adapted to move the extendable limiting plate 14 adjacent to the intermediate limiting plate 16 in the transverse direction 200. The pivotable limiting plate 11 is attached to the extendable limiting plate 14 via the swiveling device 12. The swiveling device 12 is adapted to enable rotation of the pivotable limiting plate 11 about a vertical axis.

[0094] FIG. 4 shows a schematic top view of a limiting plate assembly 7 according to an embodiment of the disclosure. In this embodiment, the limiting plate assembly 7 is attached directly to the base limiting plate 13. The pivotable limiting plate 11 is attached to the base limiting plate 13 via the swiveling device 12. The pivotable limiting plate 11 may be rotated about the swiveling device 12 between a minimum limiting plate position 17 and a maximum limiting plate position 18.

[0095] FIG. 4 shows the pivotable limiting plate 11 in a first limiting plate position 19, a second limiting plate position 20 and a third limiting plate position 21. The first limiting plate position 19 corresponds to the maximum limiting plate position 18. The third limiting plate position 21 corresponds to the minimum limiting plate position 17. In the first limiting plate position 19, the limiting plate 11 has a first angle 22 relative to the paving direction 100. The first angle 22 may be 90 degrees. In the second limiting plate position 20, the limiting plate 11 has a second angle 23 to the paving direction 100. The second angle 23 may be 120 degrees. In the third limiting plate position 21, the limiting plate 11 has a third angle 24 to the paving direction 100. The third angle 24 may be 180 degrees. In the third limiting plate position 21, the limiting plate 11 may run parallel to the paving direction 100.

[0096] The limiting plate assembly 7 also has a locking device 25 with a first latch 26. The locking device 25 may also have a second latch 27.

[0097] The first latch 26 is shown in a detailed view in FIG. 5. The latch 26 has a latch base body 28 extending substantially along an axial direction 300 between a first distal end 29 and a second distal end 30. The material thickness of the latch 26 is measured in the thickness direction 400. The thickness direction 400 of the latch 26 is the direction in which the latch 26 has the smallest extension. The latch 26 has a protrusion 31 at the first distal end 29 in the thickness direction 400. The material thickness of the protrusion 31 is greater than the material thickness of the latch base body 28. The protrusion 31 has a slanted surface 32 on the side facing away from the second distal end 30. The slanted surface 32 extends at an angle to the axial direction 300, wherein the angle differs from 90 degrees. The slanted surface 32 extends at an angle to the thickness direction 400. The surface 33 of the protrusion 31 facing the second distal end 30 extends orthogonally to the axial direction 300. The latch 26 further comprises an elongated hole 34. The elongated hole 34 is arranged in the latch base body 28 and may extend in the axial direction 300. The second latch 27 may be adapted identically to the first latch 26.

[0098] FIGS. 6 to 9 show detailed views of a locking device 25 according to an embodiment of the disclosure in the unlocking position and three locking positions. The first latch 26 and the second latch 27 are each connected to the pivotable limiting plate 11 via a screw 35, which is guided through the elongated hole 34. In the embodiment shown, the latches 26, 27 are not directly connected to the limiting plate 11, but are each indirectly connected via an intermediate piece 36. The intermediate pieces 36 may be welded to the limiting plate 11. In addition, the intermediate pieces 36 are connected to a component of the swiveling device 12, for example welded to it. The component and thus the limiting plate 11 is rotatable about the rest of the swiveling device 12. The limiting plate 11 additionally has two limiting plate protrusions 37, which are connected to the limiting plate 11, for example welded to it, and are each arranged below the intermediate pieces 36.

[0099] The locking device 25 further comprises a first locking component 38. The first locking component 38 has a first limit stop 39, a second limit stop 40 and a third limit stop 41. The second limit stop 40 and the third limit stop 41 may be the same limit stop. The term limit stop may refer to a component or surface that may be brought into contact with the latch 26, thereby limiting the movement of the latch 26 in at least one direction. The locking device 25 further comprises a second locking component 42. The second locking component 42 has a limit stop 43. The first locking component 38 may be formed integrally with the second locking component 42. The first locking component 38 and the second locking component 42 are connected to the swiveling device 12. The first locking component 38 and the second locking component 42 do not rotate about the swiveling device 12. The limiting plate 11 and thus the first latch 26 and the second latch 27 rotate relative to the first locking component 38 and the second locking component 42.

[0100] FIG. 6 shows the locking device 25 in the unlocking position. The two latches 26, 27 may be in a position tilted away from the swiveling device 12. The two latches 26, 27 may rest on the respective limiting plate protrusion 37. The two latches 26, 27 are held in the unlocking position by their own weight. The screws 35 are arranged at the end of the respective elongated hole 34 of the first and second latches 26, 27, which faces the second distal end 30. The limiting plate 11 may be rotated about the swiveling device 12 between the minimum limiting plate position 17 and the maximum limiting plate position 18.

[0101] FIG. 7 shows the locking device 25 in the first locking position. The limiting plate 11 is in the first limiting plate position 19. The first latch 26 is tilted in the direction of the swiveling device 12. The surface 33 of the protrusion 31 of the first latch 26 facing the second distal end 30 abuts against the first limit stop 39 of the first locking component 38. The first limit stop 39 has a surface that extends at an angle to a horizontal plane and at an angle to a vertical plane. Due to the interaction between the first latch 26 and the first locking component 38, the rotation of the limiting plate 11 in the direction of the minimum limiting plate position 17 is blocked.

[0102] In the embodiment shown in FIG. 7, the second latch 27 is in the unlocking position. The screw 35 of the first latch 26 is arranged at the end of the elongated hole 34 of the first latch 26, which faces the second distal end 30 of the first latch 26. The screw 35 of the second latch 27 is arranged at the end of the elongated hole 34 of the second latch 27, which faces the second distal end 30 of the second latch 27.

[0103] Alternatively, the second latch 27 may also be in the first locking position. In such a case, the second locking component 42 has the same form as the first locking component 38.

[0104] FIG. 8 shows the locking device 25 in the second locking position. The limiting plate 11 is in the second limiting plate position 20. The two latches 26, 27 are tilted in the direction of the swiveling device 12. The screw 35 of the first latch 26 is arranged at the end of the elongated hole 34 of the first latch 26, which faces the first distal end 29 of the first latch 26. The screw 35 of the second latch 27 is arranged at the end of the elongated hole 34 of the second latch 27, which faces the first distal end 29 of the second latch 27.

[0105] The slanted surface 32 of the first latch 26 abuts the second limit stop 40 of the first locking component 38. The surface 33 of the protrusion 31 of the first latch 26 facing the second distal end 30 may abut the limiting plate protrusion 37 assigned to the first latch 26.

[0106] The slanted surface 32 of the second latch 27 abuts the limit stop 43 of the second locking component 42. The surface 33 of the protrusion 31 of the second latch 27 facing the second distal end 30 may abut the limiting plate protrusion 37 assigned to the second latch 27.

[0107] The rotation of the limiting plate 11 in the direction of the maximum limiting plate position 18 is blocked by the interaction between the first latch 26 and the first locking component 38 and, if applicable, the limiting plate protrusion 37. The rotation of the limiting plate 11 in the direction of the maximum limiting plate position 18 is blocked by the interaction between the second latch 27 and the second locking component 42 and, if applicable, the limiting plate protrusion 37.

[0108] FIG. 9 shows the locking device 25 in the third locking position. The limiting plate 11 is in the third limiting plate position 21. The two latches 26, 27 are tilted in the direction of the swiveling device 12. The screw 35 of the first latch 26 is arranged at the end of the elongated hole 34 of the first latch 26, which faces the second distal end 30 of the first latch 26. The screw 35 of the second latch 27 is arranged at the end of the elongated hole 34 of the second latch 27, which faces the second distal end 30 of the second latch 27.

[0109] A surface of the first latch 26 facing the limiting plate 11 abuts against the third limit stop 41 of the first locking component 38. A surface of the first latch 26 facing away from the limiting plate 11 may abut against the limiting plate protrusion 37, which is assigned to the first latch 26.

[0110] A surface of the second latch 27 facing the limiting plate 11 abuts against the limit stop 43 of the second locking component 42. A surface of the second latch 27 facing away from the limiting plate 11 may abut against the limiting plate protrusion 37, which is assigned to the second latch 27.

[0111] The rotation of the limiting plate 11 in the direction of the maximum limiting plate position 18 is blocked by the interaction between the first latch 26 and the first locking component 38 and, if applicable, the limiting plate protrusion 37. The rotation of the limiting plate 11 in the direction of the maximum limiting plate position 18 is blocked by the interaction between the second latch 27 and the second locking component 42 and, if applicable, the limiting plate protrusion 37.