Scraper arrangement

Abstract

A scraper arrangement for a soil tilling roller of a soil tilling machine, comprising a scraper bar (32) which is elongated in the direction of a longitudinal bar axis (B) and is to be attached or is attached by means of at least two articulated units (40) to a machine frame (22) of a soil tilling machine (10) so that it can pivot between an active position and an inactive position, wherein each articulated unit (40) comprises a first articulated carrier element (42) intended to be fixed to a machine frame (22) and a second articulated carrier element (44) intended to be fixed to the scraper bar (32), characterised in that each articulated unit (40) further comprises at least one first articulated connection element (46), wherein the at least one first articulated connection element (46) is pivotably connected to the first articulated carrier element (42) about a first pivot axis (S1) in a first pivot coupling region (50) of the at least one first articulated connection element (46) and is pivotably connected to the second articulated carrier element (44) about a second pivot axis (S2) which is substantially parallel to the first pivot axis (S1) in a second pivot coupling region (54) of the at least one first articulated connection element (46), and comprises at least one second articulated connection element (48), wherein the at least one second articulated connection element (48) is pivotably connected to the first articulated carrier element (42) about a third pivot axis (S3) which is substantially parallel to the first pivot axis (S1) in a first pivot coupling region (60) of the at least one second articulated connection element (48) and is pivotably connected to the second articulated carrier element (44) about a fourth pivot axis (S4) which is substantially parallel to the third pivot axis (S3) in a second pivot coupling region (66) of the at least one second articulated connection element (48).

1 . Scraper arrangement for a soil tilling roller of a soil tilling machine, comprising a scraper bar which is elongated in the direction of a longitudinal bar axis and is to be attached or is attached by means of at least two articulated units to a machine frame of a soil tilling machine so so as to be pivotable between an active position and an inactive position, wherein each articulated unit comprises:
 a first articulated carrier element intended to be fixed to a machine frame,   a second articulated carrier element intended to be fixed to the scraper bar,   at least one first articulated connection element, wherein the at least one first articulated connection element is pivotably connected to the first articulated carrier element about a first pivot axis in a first pivot coupling region of the at least one first articulated connection element and is pivotably connected to the second articulated carrier element about a second pivot axis which is substantially parallel to the first pivot axis in a second pivot coupling region of the at least one first articulated connection element, and at least one second articulated connection element, wherein the at   least one second articulated connection element is pivotably connected to the first articulated carrier element about a third pivot axis which is substantially parallel to the first pivot axis in a first pivot coupling region of the at least one second articulated connection element and is pivotably connected to the second articulated carrier element about a fourth pivot axis which is substantially parallel to the third pivot axis in a second pivot coupling region of the at least one second articulated connection element.   
     
     
         2 . Scraper arrangement according to  claim 1 ,
 wherein in at least one articulated unit two first articulated connection elements are arranged at a distance from one another in the direction of the first pivot axis and the second pivot axis, and in that a first pivot coupling region of the first articulated carrier element is arranged axially between the first pivot coupling regions of the first articulated connection elements and a first pivot coupling region of the second articulated connection element is arranged axially between the second pivot coupling regions of the first articulated connection elements, and/or in that in at least one articulated unit two second articulated connection elements are arranged at a distance from one another in the direction of the third pivot axis and the fourth pivot axis and in that a second pivot coupling region of the first articulated carrier element is arranged axially between the first pivot coupling regions of the second articulated connection elements and a second pivot coupling region of the second articulated connection element is arranged axially between the second pivot coupling regions of the second articulated connection elements.   
     
     
         3 . Scraper arrangement according to  claim 1 ,
 wherein a single first articulated connection element is provided for at least one articulated unit and in that a first pivot coupling region of the first articulated carrier element overlaps the first pivot coupling region of the first articulated connection element on its two axial sides and a first pivot coupling region of the second articulated carrier element overlaps the second pivot coupling region of the first articulated connection element on its two axial sides, and/or in that a single second articulated connection element is provided in at least one articulated unit and in that a second pivot coupling region of the first articulated carrier element overlaps the first pivot coupling region of the second articulated connection element on its two axial sides and a second pivot coupling region of the second articulated carrier element overlaps the second pivot coupling region of the second articulated connection element on its two axial sides.   
     
     
         4 . Scraper arrangement according to  claim 1 ,
 wherein the at least one first articulated connection element is pivotably connected in its first pivot coupling region to the first articulated carrier element by a pivot pin about the first pivot axis, and/or in that the at least one first articulated connection element is pivotably connected in its second pivot coupling region to the second articulated carrier element by a pivot pin about the second pivot axis, and/or in that the at least one second articulated connection element is pivotably connected in its first pivot coupling region to the first articulated carrier element by a pivot pin about the third pivot axis, and/or in that the at least one second articulated connection element is pivotably connected in its second pivot coupling region to the second articulated carrier element by a pivot pin about the fourth pivot axis.   
     
     
         5 . Scraper arrangement according to  claim 1 ,
 wherein a distance between the first pivot axis and the third pivot axis differs from a distance between the second pivot axis and fourth pivot axis.   
     
     
         6 . Scraper arrangement according to  claim 5 ,
 wherein the distance between the first pivot axis and the third pivot axis is smaller than the distance between the second pivot axis and fourth pivot axis.   
     
     
         7 . Scraper arrangement according to  claim 1 ,
 wherein a distance between the first pivot axis and the third pivot axis corresponds to a distance between the second pivot axis and fourth pivot axis.   
     
     
         8 . Scraper arrangement according to  claim 1 ,
 wherein the at least one first articulated connection element is curved between its first pivot coupling region and its second pivot coupling region at least on a side facing the at least one second articulated connection element, and/or in that the at least one second articulated connection element curved between its first pivot coupling region and its second pivot coupling region at least on a side facing the at least one first articulated connection element.   
     
     
         9 . Scraper arrangement according to  claim 8 ,
 wherein the at least one first articulated connection element and the at least one second articulated connection element are curved in opposite directions to one another, and/or in that the at least one first articulated connection element and/or the at least one second articulated connection element is concavely curved on the side facing the respective other articulated connection element.   
     
     
         10 . Scraper arrangement according to  claim 1 ,
 wherein a prestressing arrangement is provided, wherein the prestressing arrangement prestresses the scraper bar into the inactive position when the scraper bar is positioned in the inactive position and prestresses the scraper bar into the active position when the scraper bar is positioned in the active position.   
     
     
         11 . Scraper arrangement according to  claim 10 ,
 wherein the prestressing arrangement comprises at least one prestressing springs arranged at an axial distance from one another and acting between the first articulated carrier element and the second articulated carrier element.   
     
     
         12 . Scraper arrangement according to  claim 1 ,
 wherein at least one articulated connection element of the first articulated connection element and second articulated connection element is tiltable with respect to the respective pivot axis and/or displaced orthogonally to the respective pivot axis in at least one pivot coupling region of the first pivot coupling region and second pivot coupling region with respect to the articulated carrier element of the first articulated carrier element and second articulated carrier element coupled thereto.   
     
     
         13 . Soil tilling machine, in particular soil compactor, comprising at least one soil tilling roller and, in association with at least one soil tilling roller, at least one scraper arrangement comprising a scraper bar which is elongated in the direction of a longitudinal bar axis and is pivotably attachable by at least two articulated units to a machine frame so as to be movable between an active position and an inactive position, wherein each articulated unit comprises:
 a first articulated carrier element intended to be fixed to a machine frame,   a second articulated carrier element intended to be fixed to the scraper bar,   at least one first articulated connection element, wherein the at least one first articulated connection element is pivotably connected to the first articulated carrier element about a first pivot axis in a first pivot coupling region of the at least one first articulated connection element and is pivotably connected to the second articulated carrier element about a second pivot axis which is substantially parallel to the first pivot axis in a second pivot coupling region of the at least one first articulated connection element, and   at least one second articulated connection element, wherein the at least one second articulated connection element is pivotably connected to the first articulated carrier element about a third pivot axis which is substantially parallel to the first pivot axis in a first pivot coupling region of the at least one second articulated connection element and is pivotably connected to the second articulated carrier element about a fourth pivot axis which is substantially parallel to the third pivot axis in a second pivot coupling region of the at least one second articulated connection element.