Scraper strip for a scraper device

Abstract

A scraper strip for a scraper device including at least one adjusting disk positioned in a recess of the scraper strip and rotatably attached to a scraper strip support, the adjusting disk comprising an eccentric guide track, which extends in a spiral shape or at least approximately as a circle involute, from a region at least close to a center point of the at least one adjusting disk in the direction of an edge region of the adjusting disk, and so as to linearly displace the scraper strip with respect to the scraper strip support of the scraper device when the adjusting disk is rotated. A fastener is accommodated by a groove extending substantially in a displacement direction of the scraper strip such that the scraper strip is displaced with respect to the fastener.

Claims

1. A scraper strip for a scraper device, comprising: a scraper strip body moveably attached to a scraper strip support; at least one adjusting disk positioned in a recess of the scraper strip body and comprising an eccentric guide track, which extends in a curved shape from a region at least close to a center point in the direction of an edge region of the adjusting disk, the adjusting disk rotatably attached to a scraper strip support via a guide positioned within the eccentric guide track to linearly displace the scraper strip body with respect to the scraper strip support when the at least one adjusting disk is rotated; and a first fastener connected to the scraper strip support and positioned in a guide groove of the scraper strip body, the guide groove extending substantially in a displacement direction of the scraper strip body, such that the scraper strip body is displaced with respect to the first fastener; and wherein the guide is coupled to the scraper strip support and configured to slide in the eccentric guide track of the adjusting disk when the adjusting disk moves, and wherein the guide allows the adjusting disk to rotate when the guide is in a first position and fixes the adjusting disk to the scraper strip support when the guide is in a second position.

2. The scraper strip of claim 1, wherein the eccentric guide track extends in one of a spiral shape and at least approximately as a circle involute.

3. The scraper strip of claim 1, wherein the at least one adjusting disk has a circular cross section and/or having a thickness substantially corresponding to a thickness of the scraper strip body.

4. The scraper strip of claim 1, wherein at least two adjusting disks are provided, which are disposed with mirror symmetry with respect to a longitudinal axis of the scraper strip body.

5. A scraper device for reducing adhesions on a roller which interacts with a bale of an agricultural round baler, comprising: a scraper strip including at least one adjusting disk positioned in a recess of the scraper strip and the at least one adjusting disk comprising an eccentric guide track, which extends in a curved shape, from a region at least close to a center point in the direction of an edge region of the adjusting disk, the adjusting disk rotatably attached to a scraper strip support via a guide positioned within the eccentric guide track to linearly displace the scraper strip with respect to the scraper strip support when the at least one adjusting disk is rotated; and a first fastener connected to the scraper strip support and positioned in a guide groove of the scraper strip, the guide groove extending substantially in a displacement direction of the scraper strip and configured to selectively couple the scraper strip to the scraper strip support, such that the scraper strip is displaced with respect to the first fastener; and wherein the guide is coupled to the scraper strip support and configured to slide in the eccentric guide track of the adjusting disk when the adjusting disk moves, and wherein the guide allows the adjusting disk to rotate when the guide is in a first position and fixes the adjusting disk to the scraper strip support when the guide is in a second position.

6. The scraper device of claim 5, wherein the first fastener is a screw connecting the scraper strip to the scraper strip support.

7. The scraper device of claim 5, wherein the eccentric guide track extends in one of a spiral shape and at least approximately as a circle involute.

8. The scraper device of claim 5, wherein the at least one adjusting disk has a circular cross section and/or having a thickness substantially corresponding to a thickness of the scraper strip.

9. The scraper device of claim 5, wherein at least two adjusting disks are provided, which are disposed with mirror symmetry with respect to a longitudinal axis of the scraper strip.

10. An agricultural round baler for producing round bales, comprising at least one movable component interacting with a bale, comprising: a scraper device including a scraper strip having at least one adjusting disk positioned in a recess of the scraper strip and the at least one adjusting disk comprising an eccentric guide track, which extends in a curved shape, from a region at least close to a center point in the direction of an edge region of the adjusting disk, the adjusting disk rotatably attached to a scraper strip support via a guide positioned within the eccentric guide track to linearly displace the scraper strip with respect to the scraper strip support when the at least one adjusting disk is rotated; a first fastener connected to the scraper strip support and positioned in a guide groove of the scraper strip, the guide groove extending substantially in a displacement direction of the scraper strip and configured to selectively couple the scraper strip to the scraper strip support, such that the scraper strip is displaced with respect to the first fastener; wherein the guide is coupled to the scraper strip support and configured to slide in the eccentric guide track of the adjusting disk when the adjusting disk moves, and wherein the guide allows the adjusting disk to rotate when the guide is in a first position and fixes the adjusting disk to the scraper strip support when the guide is in a second position.

11. The agricultural round baler of claim 10, wherein the eccentric guide track extends in one of a spiral shape and at least approximately as a circle involute.

12. The agricultural round baler of claim 10, wherein the at least one adjusting disk has a circular cross section and/or having a thickness substantially corresponding to a thickness of the scraper strip.

13. The agricultural round baler of claim 10, wherein at least two adjusting disk are provided, which are disposed with mirror symmetry with respect to a longitudinal axis of the scraper strip.

14. The agricultural round baler of claim 10, wherein the first fastener is a screw connecting the scraper strip to the scraper strip support.

15. The scraper strip of claim 1, wherein the guide is a second fastener.

16. The scraper strip of claim 1, comprising an engagment point positioned on a top surface of the adjusting disk and configured to be driven.

17. The scraper strip of claim 1, wherein the guide groove extends from an edge of the scraper strip body.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) In the drawing:

(2) FIG. 1 shows a side view of a round baler including a scraper device,

(3) FIG. 2 shows a view of a roller, which is situated above a lower gap, of the round baler according to FIG. 1, which baler includes a scraper device assigned to the roller,

(4) FIG. 3 shows a side view of the roller and the scraper device according to FIG. 2, and

(5) FIG. 4 shows a cross-sectional view of the adjusting disk, scraper strip, scraper strip support, and screw.

DETAILED DESCRIPTION

(6) FIG. 1 shows a round baler 10 for generating a pressed product in the form of a bale 12. The baler shown is designed in the form of a round baler and can be used in agricultural and industrial applications for producing a bale, which is round-cylindrical, in particular, and is usually referred to as a round bale, of crop material but also of rubbish, paper, cloth or woven fabric, cotton, tobacco, etc. Such a round baler 10 can be drawn by a non-illustrated working vehicle, for example a tractor, or can be designed to be self-propelled.

(7) The round baler 10 includes a vehicle frame 12, which is supported on the ground 18 via an axle 14 having wheels 16, a housing 20 having side panels 22, a crop feeding device 24, and a drawbar 26, by means of which the round baler 10 can be connected to the non-illustrated working vehicle.

(8) A bale chamber 28 is provided within the housing 20, which chamber extends between the two side panels 22 and is enclosed by a plurality of rollers 30, which are situated at least substantially on a circle, wherein the rollers 30, in the front region of the round baler 10, leave an upper gap 32 for a non-illustrated twine wrap device and a lower gap 34 for the crop feeding device 24.

(9) A scraper device 36 is assigned to a roller 30 situated above the lower gap 34, which scraper device includes a scraper strip support 38 and a scraper strip 40.

(10) Reference is now made to FIGS. 2, 3, and 4 in which the roller 30, the scraper strip support 38, and the scraper strip 40 are shown in greater detail. The scraper strip 40 can be displaceably fixed on the scraper strip support 38 by means of fastening means 42. The fastening means 42 can be designed in the form of screws 44, for example hexagon head screws, which at least substantially fixedly hold the scraper strip 40 on the scraper strip support 38 in the operating state, for example, in that said fastening means extend through openings 45 (merely indicated) in the scraper strip support 38 and engage in guide grooves 46, which are open at one end, in the scraper strip 40, in order to interact with nuts 48, which are disposed on a side 52 of the scraper strip support 38 opposite a screw head 50 of the screws 44. For improved clarity, the screw 44 on the right in FIG. 2 is shown without its hexagonal screw head 50. For the purpose of changing or setting a spacing distance A between the scraper strip 40 and the roller 30, the fastening means 42 can be loosened, for example the screws 44 can be loosened with respect to the particular nut 48. As an alternative, it is conceivable that the fastening means 42 interact with the scraper strip support 38 in such a way that the screws 44 engage into threads (not illustrated) provided in the scraper strip support 38.

(11) In addition, adjusting means 54 designed as adjusting disks are provided, which adjusting means are freely rotatably accommodated in circular recesses 56 of the scraper strip 40; in particular, said adjusting means are inserted into the scraper strip 40. Alternatively, the adjusting means 54 can also be rotatably fastened on the scraper strip 40 in any other manner. According to the exemplary embodiment depicted in the drawing, two adjusting means 54 having a circular cross section are provided, which adjusting means are disposed with mirror symmetry with respect to a longitudinal axis Lrelative to the operating direction of the round baler 10of the scraper strip 40, and are each correspondingly assigned to one of the guide grooves 46. The adjusting means 54 are designed substantially in the form of a flat cylindrical body or are designed as a type of disk and have approximately the same thickness as the scraper strip 40.

(12) The adjusting means 54 have slots 58 extending therethrough, which slotswith respect to a centre point M of the particular adjusting means 54assume at least substantially the shape of a spiral or a circle involute, which extends from the centre point M to an edge region 60 of the adjusting means 54.

(13) If the scraper strip 40 is mounted on the scraper strip support 38, one of the screws 44 extends through the slot 56, in each case, of the associated adjusting disk 54. As described above, the scraper strip 40 can be fixed on the scraper strip support 38 by means of the screw 44 engaging into the guide grooves 46 and by means of the particular nut 48. It is conceivable that flat washers, spring washers, or the like are additionally provided. The screws 44 extending through the adjusting disks 54, in turn, fix the particular adjusting means 54 with respect to the scraper strip support 38.

(14) The function of the scraper device 36 will be described in greater detail in the following:

(15) The scraper device 36 according to the exemplary embodiment shown in the drawing is used to counteract an adhesion of material, such as, for example, mud, crop material or crop material residue, dirt, etc., in order to thereby ensure an optimal function of the round baler 10 shown or, in particular, the roller 30. As a result, a regular movement of the bale 12, for example, and/or a uniform feeding of a non-illustrated binding or covering material can be supported.

(16) To this end, the scraper strip 40 extends as close as possible to the rotating roller 30 in order to thereby scrape off adhering material and/or to prevent adhesion. In order to ensure a good function of the scraper device 36, the spacing distance A between the scraper strip 40 and the roller 30 is displaceable.

(17) If the objective is to reduce the spacing distance A if said spacing distance has become too great, for example, due to wear of the scraper strip 40, or because, for example, the crop material tyings have changed, the scraper strip 40 is moved towards the roller 30 or, in order to increase the spacing distance A, is moved away from said roller. It can be necessary to (re-) adjust the spacing distance when a new or an alternative scraper strip 40 is installed, or within the framework of maintenance.

(18) To this end, the fastening means 42 are loosened, whereby the scraper strip 40 can be displaced relative to the scraper strip support 38. The screws 44 guide the scraper strip 40 in the guide grooves 46 in the longitudinal direction with respect to the operating direction of the round baler 10.

(19) The scraper strip 40 and/or the adjusting means 54 can be gripped, for example, manually, for the actual adjustment of the scraper strip 40 with respect to the scraper strip support 38. Alternatively, a motor-driven and/or automatic adjustment is conceivable.

(20) If the scraper strip 40 is displaced, the guide grooves 46 in the scraper strip 40 move along the screws 44 held in the scraper strip support 38. At the same time, the adjusting means 54 or the slots 58 in the adjusting disks 54 slide along the corresponding screws 44, whereby the adjusting disk 54 is set into rotation about its centre point M and rotates in the recess 56 in the scraper strip 40. Since the slots 58 extend from the centre point M of the adjusting means 54 generally eccentrically in the direction of the edge region 60 or, according to the exemplary embodiment depicted in the figures of the drawing, are designed in the form of a spiral extending from the centre point M in the direction of the edge region 60 or, more specifically, are designed in the shape of a circle involute, the rotation of one of the adjusting disks 54 results in a linear movement of the adjusting means 54 and, therefore, of the scraper strip 40.

(21) As shown in FIG. 2, two adjusting disks 54 are provided. If the scraper strip 40 is displaced, the adjusting means 54 move at least substantially synchronously, whereby a displacement of the spacing distance A with respect to the roller 30 along the entire width B of the scraper strip can be achieved. It is also possible, however, to provide only one or multiple adjusting means 54. In addition, engagement points 62 can be provided on one or all of the adjusting means 54 for simplifying a manual or a motor-driven rotation of the adjusting means. These can be, for example, threaded nuts, into which a corresponding, non-illustrated screw can be screwed, which an operator can use as a grip.