Locking kinematics for a channel plate of a road finisher
Patent Information
- Application Number
- EP2023198261
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-09-19
- Publication Date
- 2025-03-26
Smart Images
Figure IMGAF001_ABST
Abstract
Description
[0001] The present invention relates to the technical field of road pavers. In particular, the invention relates to road pavers with a channel plate arrangement, locking kinematics for such a channel plate arrangement, and a method for pivoting a channel plate of a road paver.
[0002] Road pavers are well known in the art. To increase their usability, screeds with variable working widths were designed. The working width is the width with which the screed distributes the paving material over the subsoil. For example, EP 2 169 117 A1 discloses a screed with a continuously variable working width. The paving material is distributed by a spreading auger in front of the screed, perpendicular to the paving direction of the road paver.
[0003] Adjusting the working width of the screed also changes the width of the applied paving material. To prevent excess paving material from being applied in the direction of paving, the width of the channel plate assembly can also be optionally adjusted to the working width. This can be achieved, for example, by using laterally pivoting plates on the outer sides of the channel plate assembly.
[0004] EP 3 988 714 A1 discloses a channel plate assembly for a road paver with pivoting channel plates. The channel plates are pivoted and held in position by means of a hydraulic pivoting device.
[0005] The object of the present invention is to provide a compact and secure locking device for pivotable components, in particular pivotable channel plates of a road paver.
[0006] This object is achieved by a channel plate arrangement according to claim 1, a locking kinematics according to claim 12 or a method for pivoting a channel plate according to claim 15.
[0007] A first aspect of the invention relates to a channel plate arrangement for a road paver. The channel plate arrangement comprises a channel plate and a pivoting device. The channel plate arrangement can also comprise further channel plates. The channel plate is attached to a component of the road paver, in particular to a component of the channel plate arrangement, by means of the pivoting device. The channel plate is rotatable about the pivoting device. The pivoting device can enable rotation of the channel plate about a vertical axis. The channel plate can be pivoted horizontally. The channel plate is rotatable between a minimum channel plate position and a maximum channel plate position.
[0008] The channel plate assembly may further comprise a locking device. The locking device is configured to assume a first locking position and a second locking position. In the first locking position, the locking device is configured to block the rotation of the channel plate about the pivoting device when the channel plate is in a first channel plate position, in the direction of the minimum channel plate position. In the second locking position, the locking device is configured to block the rotation of the channel plate about the pivoting device when the channel plate is in a second channel plate position, in the direction of the maximum channel plate position.
[0009] By rotating the channel plate, the width of the channel plate arrangement can be varied. The minimum channel plate position can correspond to the smallest width of the channel plate arrangement. The maximum channel plate position can correspond to the maximum width of the channel plate arrangement. In the minimum channel plate position, the channel plate can rest against the road paver. In the maximum channel plate position, the channel plate can protrude from the road paver, particularly orthogonally.
[0010] The road paver moves in a paving direction while paving the paving material. In the minimum channel plate position, the channel plate can extend parallel to the paving direction. The pivoting device can then be arranged at a front end of the channel plate relative to the paving direction. In the minimum channel plate position, the channel plate can be pivoted backward, opposite to the paving direction. In the maximum channel plate position, the channel plate can extend orthogonally to the paving direction.
[0011] The first channel plate position may be closer to the maximum channel plate position than the second channel plate position. The first channel plate position may correspond to the maximum channel plate position. The second channel plate position may correspond to the minimum channel plate position or a channel plate position between the minimum and maximum channel plate positions.
[0012] The first locking position of the locking device may differ from the second locking position.
[0013] The locking device can be designed to fix the channel plate in the first channel plate position, in particular in the maximum channel plate position, in the first locking position.
[0014] The locking device can be designed to fix the channel plate in the second channel plate position, in particular in the minimum channel plate position, in the second locking position.
[0015] The locking device can be configured to assume a third locking position. The locking device can be configured to block the rotation of the channel plate around the pivoting device in the third locking position when the channel plate is in a third channel plate position, in the direction of the maximum channel plate position.
[0016] The second channel plate position can be between the minimum channel plate position and the maximum channel plate position. The second channel plate position can be between the first channel plate position and the third channel plate position. The first channel plate position can correspond to the maximum channel plate position. The third channel plate position can correspond to the minimum channel plate position.
[0017] The locking device can be designed to fix the channel plate in the third channel plate position, in particular in the minimum channel plate position, in the third locking position.
[0018] The locking device can be designed to block, in the second locking position, the rotation of the channel plate about the pivoting device when the channel plate is in a fourth channel plate position, in the direction of the minimum channel plate position.
[0019] The fourth channel plate position can be between the second and third channel plate positions. The fourth channel plate position can correspond to the third channel plate position.
[0020] The locking device can be configured to limit the rotation of the channel plate around the pivoting device to an angular range in the second locking position. The angular range can essentially span an angle of 60 degrees. The angular range can represent the range between 0 and 60 degrees, or between 120 and 180 degrees, relative to the installation direction of travel.
[0021] In the first channel plate position, the channel plate can have a first angle relative to the paving direction of travel of the road paver. The channel plate can be rotatable between a second angle and a third angle relative to the paving direction of travel of the road paver when the locking device is in the second locking position. In the third channel plate position, the channel plate can have the third angle relative to the paving direction of travel of the road paver. The second angle can be between the first angle and the third angle.
[0022] The first angle can be substantially 80 to 100 degrees, in particular 90 degrees, relative to the installation direction of travel. The second angle can be substantially 50 to 70 degrees, in particular 60 degrees, or 110 to 130 degrees, in particular 120 degrees, relative to the installation direction of travel. The second angle can be inclined backwards relative to the installation direction of travel. The third angle can be substantially 0 to 10 degrees, in particular 0 degrees, or 170 to 180 degrees, in particular 180 degrees, relative to the installation direction of travel. The third angle can be inclined backwards relative to the installation direction of travel.
[0023] The locking device may comprise a latch configured to assume the first locking position and the second locking position. The latch may be configured to assume the third locking position.
[0024] The locking device may comprise a latch configured to assume the first locking position, the second locking position, and the third locking position. The locking device may comprise a latch configured to assume the second locking position and the third locking position. The locking device may comprise a latch configured to assume the first locking position and the third locking position. The latch may additionally assume an unlocking position.
[0025] The latch can be connected to the channel plate. In the first locking position, when the channel plate is in the first channel plate position, the latch can abut with a first surface against a stop of the road paver, in particular against a stop of the pivoting device. As a result, rotation of the channel plate in the direction of the minimum channel plate position can be prevented by the latch. In the second locking position, when the channel plate is in the second channel plate position, the latch can abut with a second surface against a stop of the road paver, in particular against a stop of the pivoting device. As a result, rotation of the channel plate in the direction of the maximum channel plate position can be prevented by the latch.
[0026] The term "stop" may refer to a component or surface that can be brought into contact with the latch and thereby restricts the movement of the latch in at least one direction.
[0027] The latch can be configured to assume the third locking position. In the third locking position, when the channel plate is in the third channel plate position, the latch can abut with a third surface against a stop of the road paver, in particular against a stop of the pivoting device. This can prevent rotation of the channel plate in the direction of the maximum channel plate position by the latch.
[0028] The latch can be connected to the channel plate directly or via at least one intermediate piece. The latch can be rotatable together with the channel plate around the pivoting device.
[0029] A channel plate projection can be attached to the channel plate. The channel plate projection can form a stop for the latch. In the first locking position, the latch can abut against the stop of the channel plate projection with a surface facing away from the channel plate. In the third locking position, the latch can abut against the stop of the channel plate projection with a surface facing away from the channel plate. In the first and third locking positions, the latch can abut against the same stop of the channel plate projection with the same surface facing away from the channel plate. The latch can have a projection in the direction of its thickness. In the second locking position, the latch can abut against a stop of the channel plate projection with a further surface, in particular a surface of the latch projection facing away from the pivoting device.
[0030] The latch can be connected to a component of the road paver, in particular the pivoting device. In the first locking position, when the channel plate is in the first channel plate position, the latch can abut with a first surface against a stop of the channel plate. This can prevent rotation of the channel plate in the direction of the minimum channel plate position by the latch. In the second locking position, when the channel plate is in the second channel plate position, the latch can abut with a second surface against a stop of the channel plate. This can prevent rotation of the channel plate in the direction of the maximum channel plate position by the latch.
[0031] In the third locking position, when the channel plate is in the third channel plate position, the latch can rest with a third surface against a stop of the channel plate. This can prevent the latch from rotating the channel plate toward the maximum channel plate position.
[0032] The locking device can be configured to assume an unlocking position. The channel plate can be freely rotatable around the pivoting device between the minimum channel plate position and the maximum channel plate position when the locking device is in the unlocking position.
[0033] The bolt can be held in the first, second, and / or third locking position by its own weight. The bolt can be held in the first and second locking positions by its own weight. The bolt can be held in the unlocked position by its own weight.
[0034] The third locking position may be different from the first locking position and the second locking position.
[0035] The channel plate arrangement may include a further channel plate that is not pivotable. The non-pivoting channel plate may be designed to be laterally displaceable. The channel plate arrangement may include two further channel plates that are not pivotable.
[0036] The swivel device can be attached to the paver. The swivel device can be attached to the non-swiveling channel plate. The swivel device can be attached to the non-swiveling, movable channel plate.
[0037] The pivoting device can be designed as a hinge. The pivoting device can enable rotation of the channel plate about a vertical axis. The pivoting device can consist of a first cylinder and a second cylinder. The two cylinders can extend in the vertical direction. The second cylinder can be a hollow cylinder. The first cylinder can be arranged in the hollow cylinder. The two cylinders can be designed such that they are rotatable relative to one another. The first cylinder or the second cylinder can be connected to the channel plate. The other cylinder of the first or second cylinder can be connected to a component of the road paver, in particular a component of the channel plate arrangement, in particular a non-pivoting channel plate of the channel plate arrangement.
[0038] The first cylinder and the second cylinder enable rotation of the channel plate relative to the rest of the channel plate arrangement.
[0039] The road paver may have a hydraulic cylinder configured to retract and extend the channel plate assembly. The road paver may have a hydraulic cylinder configured to rotate the channel plate about the pivoting device. The road paver may have an electric drive configured to rotate the channel plate about the pivoting device. The rotation of the channel plate about the pivoting device can be done manually. The rotation of the channel plate about the pivoting device can be caused by the paving material, in particular when the paving material is conveyed by the transverse distribution device toward the channel plate.
[0040] The latch can be subjected to bending in the first locking position. This can block the rotation of the channel plate toward the minimum channel plate position. The latch can be subjected to bending in the third locking position. This can block the rotation of the channel plate toward the maximum channel plate position. The latch can be subjected to compression in the second locking position. This can block the rotation of the channel plate toward the maximum channel plate position.
[0041] The latch can be designed according to the latch described in the third aspect of the invention. The latch can be a first latch. The locking device can have a second latch. The second latch can be designed the same as the first latch. The second latch can be designed according to the latch described in the third aspect of the invention. The second latch can be arranged vertically below the first latch. The second latch can be arranged vertically above the first latch. The second latch can be designed to assume the second and third locking positions, in particular simultaneously with the first latch. The second latch can be designed to assume the first, second and third locking positions, in particular simultaneously with the first latch.
[0042] The road paver, in particular the pivoting device, can have a second stop. The second stop can interact with the second bar. The second bar can be connected to the channel plate.
[0043] In the first locking position of the second latch, when the channel plate is in the first channel plate position, the second latch can abut against the second stop with a first surface. This can prevent rotation of the channel plate toward the minimum channel plate position by the second latch.
[0044] In the second locking position of the second latch, when the channel plate is in the second channel plate position, the latch can abut against the second stop with a second surface. This can prevent rotation of the channel plate toward the maximum channel plate position by the second latch.
[0045] In the third locking position of the second latch, when the channel plate is in the third channel plate position, the latch can abut against the second stop with a third surface. This can prevent rotation of the channel plate toward the maximum channel plate position by the second latch.
[0046] The second latch can be configured to assume only the second and third locking positions. The second latch can be configured to assume an unlocking position. The second stop can be configured such that the second latch can only assume the second and third locking positions.
[0047] The first latch may have an elongated hole. The first latch may be attached to the channel plate by means of a fastening means, in particular a screw or a bolt, through the elongated hole. The second latch may have an elongated hole. The second latch may be attached to the channel plate by means of a fastening means, in particular a screw or a bolt, through the elongated hole.
[0048] The channel plate assembly may include a control device. The control device may be configured to rotate the channel plate about the pivoting device. The control device may be configured to move the channel plate to the first, second, and / or third channel plate position. The control device may be configured to move the latch to the unlocked position. The control device may be configured to move the latch to the first, second, and / or third locked position.
[0049] A second aspect of the invention relates to a road paver comprising a screed assembly. The road paver can move along a paving direction of travel while paving paving material. The screed assembly can be configured to be variable in width. The width of the screed assembly can refer to the extent of the screed assembly orthogonal to the paving direction of travel. The road paver comprises a transverse distribution device. The transverse distribution device can be configured to distribute paving material transversely to the paving direction of travel. The transverse distribution device can be a conveyor screw. The road paver has a first channel plate assembly. The first channel plate assembly can be configured according to the first aspect of the invention. The first channel plate assembly is arranged in front of the transverse distribution device in the paving direction of travel.The transverse distribution device is arranged in front of the screed arrangement in the paving direction.
[0050] The first channel plate arrangement can be arranged on a first side of the road paver, for example on the left side as viewed in the paving direction. The road paver can have a second channel plate arrangement. The second channel plate arrangement can be designed according to the first aspect of the invention. The second channel plate arrangement can be arranged on a second side opposite the first side, for example on the right side as viewed in the paving direction. The first channel plate arrangement and the second channel plate arrangement can form a channel plate device. The channel plate device can additionally have a further channel plate that is not pivotable. The channel plate device can additionally have two further channel plates that are not pivotable.The channel plate device may comprise hydraulic cylinders configured to pivot the pivotable channel plates of the first channel plate arrangement and the second channel plate arrangement. The channel plate device may comprise electric drives configured to pivot the pivotable channel plates of the first channel plate arrangement and the second channel plate arrangement.
[0051] The road paver may include a control device. The control device may be configured to rotate the channel plate about the pivoting device. The control device may be configured to move the channel plate into the first, second, and / or third channel plate position. The control device may be configured to move the latch into the unlocking position. The control device may be configured to move the latch into the first, second, and / or third locking position.
[0052] A third aspect of the invention relates to locking kinematics for a pivotable component of a construction machine, in particular for a channel plate arrangement according to the first aspect of the invention. The locking kinematics comprises at least one locking component. The locking component has a first stop, a second stop, and a third stop. The stops can be designed as surfaces. The locking kinematics further comprises at least one latch that extends substantially along an axial direction between a first distal end and a second distal end. The latch can have an elongated hole. The elongated hole can extend in the axial direction of the latch, in particular can be arranged parallel to the axial direction. The latch can be rotatably attached to the pivotable component by means of a fastening means, in particular a screw or a bolt, through the elongated hole.The fastening means can be movable within the elongated hole. This allows the latch to be displaceable relative to the pivotable component. The latch can have a projection in the thickness direction at a first distal end. The thickness direction can extend orthogonally to the axial direction. The latch can be L-shaped. The projection can represent one leg of the L-shape. The other leg of the L-shape can be formed by the extension of the latch in the axial direction. The projection can have a beveled surface on the side facing away from the second distal end.
[0053] The latch can be moved to a first locking position. The latch can be moved to a second locking position. The latch can be moved to a third locking position. In the first locking position, a surface of the projection facing the second distal end of the latch can abut against the first stop. In the second locking position, the beveled surface of the projection can abut against the second stop. In the third locking position, a surface of the projection facing the pivotable component can abut against the third stop. The first locking position can be different from the second and / or third locking position. The second locking position can be different from the first and / or third locking position.
[0054] The beveled surface of the projection may extend at an angle, in particular an angle between 50 and 70 degrees, in particular an angle of 60 degrees, to the axial direction of the bolt. The beveled surface of the projection may extend at an angle, in particular an angle between 20 and 40 degrees, in particular an angle of 30 degrees, to the thickness direction of the bolt.
[0055] The second stop and the third stop can represent the same stop. The second stop and the third stop can be formed by the same surface.
[0056] The locking component can be attached to a pivoting device. The pivotable component can be secured to the pivoting device. The pivotable component can be rotatable about the pivoting device. The locking component can be configured such that it is not rotatable about the pivoting device.
[0057] When the latch is in the first locking position, the pivotable member can be movable between a first pivot angle and a second pivot angle. When the latch is in the second locking position, the pivotable member can be movable between a third pivot angle and a fourth pivot angle. When the latch is in the third locking position, the pivotable member can be movable between the fourth pivot angle and a fifth pivot angle.
[0058] The first pivot angle can correspond to a maximum pivot position. The pivot device or the construction machine can be designed such that the pivotable component cannot be pivoted further than the maximum pivot position. The fifth pivot angle can correspond to a minimum pivot position. The pivot device or the construction machine can be designed such that the pivotable component cannot be pivoted further than the minimum pivot position. The pivot device or the construction machine can be designed such that the pivotable component can be pivoted between the minimum pivot position and the maximum pivot position.
[0059] The first pivot angle can be identical to the second pivot angle. When the latch is in the first locking position, the pivotable component can be fixed at the position of the first pivot angle or the second pivot angle, in particular the maximum pivot position. The fourth pivot angle can be identical to the fifth pivot angle. When the latch is in the third locking position, the pivotable component can be fixed at the position of the fourth pivot angle or the fifth pivot angle, in particular the minimum pivot position.
[0060] When the latch is in the first locking position, the fastening means may be located at an end of the elongated hole facing the second distal end of the latch. When the latch is in the second locking position, the fastening means may be located at an end of the elongated hole facing the first distal end of the latch. When the latch is in the third locking position, the fastening means may be located at an end of the elongated hole facing the second distal end of the latch. When the latch is in the unlocking position, the fastening means may be located at an end of the elongated hole facing the second distal end of the latch.
[0061] The latch may represent a first latch. The locking mechanism may include a second latch. The second latch may be identical to the first latch.
[0062] The locking component may represent a first locking component. The locking kinematics may include a second locking component. The second locking component may be attached to the pivoting device. The second locking component may be configured such that it is not rotatable about the pivoting device. The second locking component has a first stop, a second stop, and a third stop. Alternatively, the second locking component may have only one stop. The second locking component may be formed integrally with the first locking component.
[0063] The second latch can be moved into a first, second, and third locking position. The second latch can be moved into an unlocking position. In the first locking position, a surface of the projection of the second latch facing the second distal end of the second latch can abut the first stop of the second locking component. In the second locking position, the beveled surface of the projection of the second latch can abut the second stop of the second locking component. In the third locking position, a surface of the projection of the second latch facing the pivotable component can abut the third stop of the second locking component.
[0064] Alternatively, the second latch can only be moved to the second and third locking positions and the unlocking position. In the second locking position, the beveled surface of the projection of the second latch can abut the stop of the second locking component. In the third locking position, a surface of the projection of the second latch facing the pivotable component can abut the stop of the second locking component. When the first latch is in the first locking position, the second latch can be in the unlocking position.
[0065] A projection can be attached to the pivotable component. The projection can form a stop for the latch. The projection can be L-shaped. In the first locking position, the latch can abut against the stop of the projection with a surface facing away from the pivotable component. In the third locking position, the latch can abut against the stop of the projection with a surface facing away from the pivotable component. In the first and third locking positions, the latch can abut against the same stop of the projection with the same surface facing away from the pivotable component. In the second locking position, the latch can abut against a stop of the projection of the pivotable component with a further surface, in particular a surface of the projection of the latch facing the second distal end.
[0066] A road paver, in particular the road paver according to the second aspect of the invention, comprises a screed assembly. The road paver can move along a paving direction of travel during the paving of paving material. The road paver comprises a transverse distribution device, in particular a conveyor screw. The road paver has a pivotable component. The pivotable component is arranged in front of the transverse distribution device in the paving direction of travel. The road paver comprises the locking kinematics according to the third aspect of the invention. The locking kinematics can be designed to fix the pivotable component in different positions or to limit the rotation of the pivotable component.
[0067] The locking kinematics may include a control device. The control device may be configured to rotate the pivotable component. The control device may be configured to move the latch into the unlocking position. The control device may be configured to move the latch into the first, second, and / or third locking position.
[0068] A fourth aspect of the invention relates to the use of a locking kinematics according to the third aspect of the invention for locking a channel plate arrangement according to the first aspect of the invention.
[0069] A fifth aspect of the invention relates to a method for pivoting a channel plate of a road paver. The method comprises moving a locking device of the road paver into an unlocking position. When the locking device is in the unlocking position, the channel plate is pivotable between a minimum channel plate position and a maximum channel plate position, in particular about a vertical axis. The method further comprises pivoting the channel plate into a channel plate position located between the minimum channel plate position and the maximum channel plate position. The method further comprises moving the locking device into a locking position. In the locking position, the channel plate is pivotable between the minimum channel plate position and a middle channel plate position.The middle channel plate position is located between the minimum channel plate position and the maximum channel plate position.
[0070] The mean channel plate position may be closer to the maximum channel plate position than to the minimum channel plate position.
[0071] The method may further comprise moving the locking device into the unlocking position and then pivoting the channel plate into the minimum or maximum channel plate position. The locking device may then be moved into a further locking position, which differs in particular from the other locking position. When the locking device is in the further locking position, the channel plate may be fixed in the minimum channel plate position or the maximum channel plate position, respectively.
[0072] The pivoting of the channel plate into the channel plate position, the minimum channel plate position, the middle channel plate position, and / or the maximum channel plate position can be accomplished by means of a hydraulic cylinder and / or electric drive. The pivoting of the channel plate into the channel plate position, the minimum channel plate position, the middle channel plate position, and / or the maximum channel plate position can be accomplished by a control unit.
[0073] The locking device can be moved to the unlocking position manually. The locking device can be moved to the locking position manually. The locking device can be moved to the further locking position manually.
[0074] The channel plate arrangement according to the first aspect of the invention can be used in a road paver according to the second aspect of the invention and / or with method steps of the method according to the fifth aspect of the invention. The channel plate arrangement according to the first aspect of the invention can be used in combination with the locking kinematics according to the third aspect of the invention. The channel plate arrangement according to the first aspect of the invention and the locking kinematics according to the third aspect of the invention can be used after use according to the fourth aspect of the invention. The locking kinematics according to the third aspect of the invention can be used in a road paver according to the second aspect of the invention and / or with method steps of the method according to the fifth aspect of the invention.The use of locking kinematics according to the fourth aspect of the invention can be carried out with locking kinematics according to the third aspect of the invention, in a road paver according to the second aspect of the invention and / or using method steps of the method according to the fifth aspect of the invention. The method according to the fifth aspect of the invention can be carried out with a channel plate arrangement according to the first aspect of the invention, with a road paver according to the second aspect of the invention and / or locking kinematics according to the third aspect of the invention.
[0075] The terms "first," "second," "third," and "fourth" are merely designations for a specific element or component and do not necessarily imply a particular order of the components or elements mentioned. For example, the presence of a second component does not necessarily imply the presence of a first component, and vice versa.
[0076] In the following, the invention is explained in more detail using embodiments. Fig. 1 shows a schematic side view of a road paver with a channel plate arrangement according to an embodiment of the invention. Fig. 2 shows a schematic plan view of a road paver with a channel plate device with a channel plate arrangement according to an embodiment of the invention. Fig. 3 shows a schematic front view of a section of the channel plate device from Fig. 2 . Fig. 4 shows a schematic plan view of a channel plate arrangement according to an embodiment of the invention. Fig. 5 shows a detailed view of a latch according to an embodiment of the invention. Fig. 6 shows a detailed view of a locking device according to an embodiment of the invention in the unlocking position. Fig. 7 shows a detailed view of the locking device from Fig. 5 in a first locking position. Fig. 8 shows a detailed view of the locking device from Fig. 5 in a second locking position. Fig. 9 shows a detailed view of the locking device from Fig. 5 in a third locking position.
[0077] Fig. 1 shows a road paver 1 according to an embodiment of the invention. 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 in Fig. 1 merely sketched schematically. In the front area of the road paver 1, a material hopper 4 for receiving paving material is arranged. The paving material, also referred to as paving material, is transported rearward by a material transport device of the towing vehicle 2 against the paving direction 100 and presented to the screed assembly 3. In the rear area of the towing vehicle 2, a transverse distribution device 5 is provided, which distributes the paving material orthogonally to the paving direction 100 in front of the screed assembly 3. A channel plate device 6 with at least one channel plate assembly 7 is arranged in the paving direction 100 in front of the transverse distribution device 5. The channel plate device 6 prevents the paving material from deflecting in the paving direction 100.
[0078] Fig. 2 shows a plan view of a road paver 1 according to an embodiment of the invention. The screed assembly 3 comprises a base screed 8. The base screed has a base screed working width 201. The base screed working width 201 can 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 can additionally have extending screeds 9. The total working width 202 is composed of the base screed 8 and the extending screeds 9. The extending screeds 9 can be designed to be movable relative to the base screed 8 in the transverse direction 200. As a result, the total working width 202 can be varied. The screed assembly 3 can 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 into areas that lie laterally outside the paving screed arrangement 3.
[0079] The transverse distribution device 5 is arranged in front of the screed assembly 3 in the paving direction 100. The channel plate device 6 is arranged in front of the transverse distribution device 5 in the paving direction 100. The channel plate device 6 has a channel plate assembly 7. The channel plate assembly 7 has a pivotable channel plate 11. The channel plate 11 is rotatable about a pivoting device 12, in particular about a vertical axis.
[0080] The channel plate device 6 can have a base channel plate 13. The base channel plate 13 extends substantially in the transverse direction 200. The channel plate device 6 can additionally have an extendable channel plate 14. The extendable channel plate 14 can be moved in the transverse direction 200 relative to the base channel plate 13 by means of a displacement device 15, for example a hydraulic cylinder or an electric drive. The laterally extendable channel plate 14 allows the effective width of the channel plate device 6 to be varied. The channel plate device 6 can have an intermediate channel plate 16. The intermediate channel plate 16 can be arranged between the base channel plate 13 and the extendable channel plate 14. The extendable channel plate 14 can be fastened to the base channel plate 13 or the intermediate channel plate 16. The displacement device 15 can be fastened to the base channel plate 13 or the intermediate channel plate 16.
[0081] The pivoting device 12 can be attached to the base channel plate 13, the extendable channel plate 14, or the intermediate channel plate 16. The pivoting channel plate 11 can thus be rotated relative to the base channel plate 13, the extendable channel plate 14, or the intermediate channel plate 16.
[0082] The channel plate device 6 can have two channel plate arrangements 7, as in Fig. 2 shown. The two channel plate arrangements 7 can advantageously be arranged on the left and right sides of the road finisher 1. The channel plate device 6 can have two extendable channel plates 14, two travel devices 15 and two intermediate channel plates 16, as in Fig. 2 shown. These can advantageously be arranged on the left and right sides of the road paver 1.
[0083] Fig. 3 shows a front view of the channel plate device 6 from Fig. 2 The channel plate device 6 comprises the base channel plate 13, to which the intermediate channel plate 16 is attached laterally in the transverse direction 200. The displacement device 15 is attached to the intermediate channel plate 16 and is designed to move the extendable channel plate 14 adjacent to the intermediate channel plate 16 in the transverse direction 200. The pivotable channel plate 11 is attached to the extendable channel plate 14 by means of the pivoting device 12. The pivoting device 12 is designed to enable rotation of the pivotable channel plate 11 about a vertical axis.
[0084] Fig. 4 shows a schematic top view of a channel plate assembly 7 according to an embodiment of the invention. In this embodiment, the channel plate assembly 7 is attached directly to the base channel plate 13. The pivotable channel plate 11 is fastened to the base channel plate 13 by means of the pivoting device 12. The pivotable channel plate 11 can be rotated about the pivoting device 12 between a minimum channel plate position 17 and a maximum channel plate position 18.
[0085] Fig. 4 shows the pivotable channel plate 11 in a first channel plate position 19, a second channel plate position 20 and a third channel plate position 21. The first channel plate position 19 corresponds to the maximum channel plate position 18. The third channel plate position 21 corresponds to the minimum channel plate position 17. In the first channel plate position 19, the channel plate 11 has a first angle 22 to the paving direction 100. The first angle 22 can be 90 degrees. In the second channel plate position 20, the channel plate 11 has a second angle 23 to the paving direction 100. The second angle 23 can be 120 degrees. In the third channel plate position 21, the channel plate 11 has a third angle 24 to the paving direction 100. The third angle 24 can be 180 degrees. In the third channel plate position 21, the channel plate 11 can run parallel to the paving direction 100.
[0086] The channel plate assembly 7 further comprises a locking device 25 with a first latch 26. The locking device 25 may additionally comprise a second latch 27.
[0087] The first bar 26 is in Fig. 5 shown in a detailed view. The latch 26 has a latch base body 28 which extends 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 projection 31 in the thickness direction 400 at the first distal end 29. The material thickness of the projection 31 is greater than the material thickness of the latch base body 28. The projection 31 has a beveled surface 32 on the side facing away from the second distal end 30. The beveled surface 32 runs at an angle to the axial direction 300, wherein the angle differs from 90 degrees. The beveled surface 32 runs at an angle to the thickness direction 400.The surface 33 of the projection 31 facing the second distal end 30 extends orthogonally to the axial direction 300. The latch 26 further has an elongated hole 34. The elongated hole 34 is arranged in the latch base body 28 and can extend in the axial direction 300. The second latch 27 can be configured identically to the first latch 26.
[0088] The Fig. 6 bis 9 show detailed views of a locking device 25 according to an embodiment of the invention in the unlocking position and three locking positions. The first latch 26 and the second latch 27 are each connected to the pivotable channel plate 11 by means of a screw 35 that is guided through the elongated hole 34. In the embodiment shown, the latches 26, 27 are not connected directly to the channel plate 11, but indirectly via an intermediate piece 36 each. The intermediate pieces 36 can be welded to the channel plate 11. In addition, the intermediate pieces 36 are connected to a component of the pivoting device 12, for example, welded to it. The component and thus the channel plate 11 is rotatable about the rest of the pivoting device 12. The channel plate 11 additionally has two channel plate projections 37, which are connected to the channel plate 11, for example, welded to it, and are each arranged below the intermediate pieces 36.
[0089] The locking device 25 further comprises a first locking component 38. The first locking component 38 has a first stop 39, a second stop 40, and a third stop 41. The second stop 40 and the third stop 41 can be the same stop. The term stop can refer to a component or a surface that can be brought into contact with the latch 26 and thereby limits 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 stop 43. The first locking component 38 can be formed integrally with the second locking component 42. The first locking component 38 and the second locking component 42 are connected to the pivot device 12.The first locking component 38 and the second locking component 42 do not rotate about the pivot device 12. The channel 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.
[0090] Fig. 6 shows the locking device 25 in the unlocked position. The two latches 26, 27 can be in a position folded away from the pivoting device 12. The two latches 26, 27 can rest on the respective channel plate projection 37. The two latches 26, 27 are held in the unlocked 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 that faces the second distal end 30. The channel plate 11 can be rotated about the pivoting device 12 between the minimum channel plate position 17 and the maximum channel plate position 18.
[0091] Fig. 7 shows the locking device 25 in the first locking position. The channel plate 11 is located in the first channel plate position 19. The first latch 26 is folded toward the pivoting device 12. The surface 33 of the projection 31 of the first latch 26 facing the second distal end 30 bears against the first stop 39 of the first locking component 38. The first stop 39 has a surface that extends at an angle to a horizontal plane and at an angle to a vertical plane. The interaction between the first latch 26 and the first locking component 38 blocks the rotation of the channel plate 11 in the direction of the minimum channel plate position 17.
[0092] The second bar 27 is located at the Fig. 7 shown embodiment in the unlocked position. The screw 35 of the first latch 26 is arranged at the end of the elongated hole 34 of the first latch 26 that 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 that faces the second distal end 30 of the second latch 27.
[0093] Alternatively, the second latch 27 can also be in the first locking position. In such a case, the second locking component 42 is configured identically to the first locking component 38.
[0094] Fig. 8 shows the locking device 25 in the second locking position. The channel plate 11 is in the second channel plate position 20. The two latches 26, 27 are folded toward the pivoting 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 that 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 that faces the first distal end 29 of the second latch 27.
[0095] The beveled surface 32 of the first latch 26 abuts the second stop 40 of the first locking component 38. The surface 33 of the projection 31 of the first latch 26 facing the second distal end 30 can abut the channel plate projection 37 associated with the first latch 26.
[0096] The beveled surface 32 of the second latch 27 abuts the stop 43 of the second locking component 42. The surface 33 of the projection 31 of the second latch 27 facing the second distal end 30 can abut the channel plate projection 37 associated with the second latch 27.
[0097] The interaction between the first latch 26 and the first locking component 38 and, if applicable, the channel plate projection 37 blocks the rotation of the channel plate 11 in the direction of the maximum channel plate position 18. The interaction between the second latch 27 and the second locking component 42 and, if applicable, the channel plate projection 37 blocks the rotation of the channel plate 11 in the direction of the maximum channel plate position 18.
[0098] Fig. 9shows the locking device 25 in the third locking position. The channel plate 11 is in the third channel plate position 21. The two latches 26, 27 are folded toward the pivoting 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 that 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 that faces the second distal end 30 of the second latch 27.
[0099] A surface of the first latch 26 facing the channel plate 11 abuts the third stop 41 of the first locking component 38. A surface of the first latch 26 facing away from the channel plate 11 can abut the channel plate projection 37 associated with the first latch 26.
[0100] A surface of the second latch 27 facing the channel plate 11 abuts the stop 43 of the second locking component 42. A surface of the second latch 27 facing away from the channel plate 11 can abut the channel plate projection 37 associated with the second latch 27.
[0101] The interaction between the first latch 26 and the first locking component 38 and, if applicable, the channel plate projection 37 blocks the rotation of the channel plate 11 in the direction of the maximum channel plate position 18. The interaction between the second latch 27 and the second locking component 42 and, if applicable, the channel plate projection 37 blocks the rotation of the channel plate 11 in the direction of the maximum channel plate position 18.
Claims
1. Channel plate arrangement (7) for a road paver (1) comprising a channel plate (11), a pivoting device (12), and a locking device (25), wherein the channel plate (11) is attached to a component of the road paver (1) by means of the pivoting device (12), wherein the channel plate (11) is rotatable about the pivoting device (12) between a minimum channel plate position (17) and a maximum channel plate position (18), wherein the locking device (25) is designed to assume a first locking position and a second locking position, wherein the locking device (25) is designed to block the rotation of the channel plate (11) about the pivoting device (12) in the first locking position when the channel plate (11) is in a first channel plate position (19) in the direction of the minimum channel plate position (17), and to block the rotation of the channel plate (11) about the pivoting device (12) in the second locking position,when the channel plate (11) is in a second channel plate position (20), to block in the direction of the maximum channel plate position (18).
2. Channel plate arrangement according to claim 1, wherein the locking device (25) is designed to assume a third locking position, wherein the locking device (25) is designed to block, in the third locking position, the rotation of the channel plate (11) about the pivoting device (12) when the channel plate (11) is in a third channel plate position (21), in the direction of the maximum channel plate position (18).
3. Channel plate arrangement according to claim 2, wherein the locking device (25) is designed to block, in the second locking position, the rotation of the channel plate (11) about the pivoting device (12) when the channel plate (11) is in a fourth channel plate position, in the direction of the minimum channel plate position (17).
4. Channel plate arrangement according to claim 2 or 3, wherein the channel plate (11) in the first channel plate position (19) has a first angle (22) to the paving direction of travel (100) of the road paver (1), wherein, when the locking device (25) is in the second locking position, the channel plate (11) is rotatable between a second angle (23) and a third angle (24) to the paving direction of travel (100) of the road paver (1), wherein the channel plate (11) in the third channel plate position (21) has the third angle (24) to the paving direction of travel (100) of the road paver (1), wherein the second angle (23) is between the first angle (22) and the third angle (24).
5. Channel plate arrangement according to one of the preceding claims, wherein the locking device (25) has a latch (26) which is designed to assume the first locking position and the second locking position, wherein the latch (26) is held in the first locking position and the second locking position in particular by its own weight.
6. Channel plate arrangement according to claim 5, wherein the latch (25) is connected to the channel plate (11), wherein in the first locking position, when the channel plate (11) is in the first channel plate position (19), the latch (26) bears with a first surface (33) against a stop (39) of the road finisher (1), such that rotation of the channel plate (11) in the direction of the minimum channel plate position (17) is prevented by the latch (26), and / or in the second locking position, when the channel plate (11) is in the second channel plate position (20), the latch (26) bears with a second surface (32) against a stop (40) of the road finisher (1), such that rotation of the channel plate (11) in the direction of the maximum channel plate position (18) is prevented by the latch (26).
7. Channel plate arrangement according to claim 5 or 6, insofar as these refer back to claim 2, wherein the latch (26) is designed to assume the third locking position, wherein in the third locking position, when the channel plate (11) is in the third channel plate position (21), the latch (26) bears with a third surface against a stop (41) of the road finisher (1), so that rotation of the channel plate (11) in the direction of the maximum channel plate position (18) is prevented by the latch (26).
8. Channel plate arrangement according to claim 5, wherein the latch (26) is connected to a component of the road paver (1), wherein in the first locking position, when the channel plate (11) is in the first channel plate position (19), the latch (26) bears with a first surface against a stop of the channel plate (11), such that rotation of the channel plate (11) in the direction of the minimum channel plate position (17) is prevented by the latch (26), and / or in the second locking position, when the channel plate (11) is in the second channel plate position (20), the latch (26) bears with a second surface against a stop of the channel plate (11), such that rotation of the channel plate (11) in the direction of the maximum channel plate position (18) is prevented by the latch (26).
9. Channel plate arrangement according to one of the preceding claims, wherein the locking device (25) is designed to assume an unlocking position, wherein, when the locking device (25) is in the unlocking position, the channel plate (11) is freely rotatable about the pivoting device (12) between the minimum channel plate position (17) and the maximum channel plate position (18).
10. Channel plate arrangement according to one of the preceding claims, wherein the channel plate arrangement (7) comprises a pivoting device, wherein the pivoting device is designed to rotate the channel plate (11) about the pivoting device (12), wherein the pivoting device has a hydraulic cylinder and / or an electric drive.
11. Road finisher (1) comprising: a screed assembly (3), a transverse distribution device (5) which is designed to distribute paving material transversely to a paving direction of travel (100) of the road finisher (1), and a channel plate assembly (7) according to one of the preceding claims, wherein the channel plate assembly (7) is arranged in front of the transverse distribution device (5) in the paving direction of travel (100).
12. Locking kinematics for a pivotable component of a construction machine, in particular for a channel plate arrangement (7) according to one of claims 1 to 10, comprising at least one locking component (38) having a first stop (39), a second stop (40) and a third stop (41), and at least one latch (26) extending substantially along an axial direction (300) between a first distal end (29) and a second distal end (30), wherein the latch (26) has an elongated hole (34) through which the latch (26) is rotatably attached to the pivotable component by means of a fastening means, wherein the latch (26) has a projection (31) in the thickness direction at the first distal end (29), wherein the projection (31) has a beveled surface (32) on the side facing away from the second distal end (30), wherein the latch (26) can be pivoted into a first locking position,a second locking position and a third locking position, wherein in the first locking position a surface (33) of the projection (31) facing the second distal end (30) abuts the first stop (39), wherein in the second locking position the beveled surface (39) abuts the second stop (40), and wherein in the third locking position a surface of the projection (31) facing the pivotable component abuts the third stop (41).
13. Locking kinematics according to claim 12, wherein, when the latch (26) is in the first locking position, the pivotable component is movable between a first pivot angle and a second pivot angle, wherein, when the latch (26) is in the second locking position, the pivotable component is movable between a third pivot angle and a fourth pivot angle, and / or wherein, when the latch is in the third locking position, the pivotable component is movable between the fourth pivot angle and a fifth pivot angle.
14. Use of a locking kinematics according to claim 12 or 13 for locking a channel plate arrangement according to one of claims 1 to 10.
15. A method for pivoting a channel plate (11) of a road paver (1), comprising: - moving a locking device of the road paver into an unlocking position so that the channel plate (11) can be pivoted between a minimum channel plate position (17) and a maximum channel plate position (18), - pivoting the channel plate (11) into a channel plate position which is located between the minimum channel plate position (17) and the maximum channel plate position (18), and - moving the locking device into a locking position so that the channel plate (11) can be pivoted between the minimum channel plate position (17) and a middle channel plate position, wherein the middle channel plate position is located between the minimum channel plate position (17) and the maximum channel plate position (18).
Citation Information
Patent Citations
Road finisher
EP2169117A1
Channel sheet assembly for a paver
EP3988714A1
Asphalt finisher
WO2020009123A1
Cited By
road paver
DE102024123919A1