Beet harvesting machine

Abstract

The invention relates to a beet harvesting machine, in particular for sugar beet, having a machine frame, a cleaning device which has at least one star screen rotatable about a star screen axis and which is arranged on the machine frame, a conveying apparatus and a bunker for intermediately storing dug beets, wherein the star screen is mounted on the machine frame to move in a transverse direction transverse to a longitudinal centre axis of the beet harvesting machine.

Description

[0001] Beet harvester

[0002] The invention relates to a beet harvester, particularly for sugar beets, comprising a machine frame, a cleaning device arranged on the machine frame, which has at least one screen star rotatable about a screen star axis, a conveyor device, and a bunker for the temporary storage of harvested beets. During operation, the conveyor device transports the beets harvested by a harvesting unit to the cleaning device and / or from the cleaning device to the bunker.

[0003] Generic machines are expected to become increasingly more efficient, which is reaching its limits in the functional units described above, particularly with regard to cleaning.

[0004] It is an object of the present invention to make a generic device more efficient with regard to cleaning.

[0005] The object is achieved by an object according to claim 1. Advantageous embodiments of the invention can be found in the subclaims and the following description.

[0006] A beet harvester according to the invention, also called a beet harvester, is characterized in that the screening star and / or screening star frame is mounted on the machine frame so that it can move in a transverse direction transverse to a longitudinal center axis of the beet harvester. The screening star is arranged so that it can move in such a way that the position of the screening star axis can be changed in the transverse direction, i.e., the movement in the transverse direction does not mean the rotation of the screening star during operation.

[0007] Wherever this application refers to a movement and / or mobility of one or more screening stars in the transverse direction, this particularly refers to a movement and / or mobility of one or more screening star frames in the transverse direction. The at least one screening star and / or screening star frame can be moved, in particular co-moved, relative to the machine frame by moving a suspension, i.e., a suspension device with one or more suspension points, or by moving another mounting.

[0008] In the present case, a movement in the transverse direction means a movement of the respective screening star, screening star frame and / or its suspension or mounting transversely to the longitudinal center axis of the screening star in a plan view and independently or at least approximately independently of a height, relative to the longitudinal center axis, of the screening star and / or screening star frame above the ground on which the beet harvester stands.

[0009] Within the scope of this application, the movement in the transverse direction can be optionally

[0010] - a movement, mobility and / or displaceability exclusively in the transverse direction, ie horizontal transverse direction or alternatively - a movement, mobility and / or displaceability that occurs partially, in particular also proportionally in the transverse direction; preferably proportionally in the transverse direction over its entire course of movement.

[0011] In this application, the transverse direction refers in particular to the horizontal transverse direction. This is on the one hand transverse to the vertical direction and on the other hand

[0012] - transverse to the direction of travel and / or longitudinal center axis of the beet harvester

[0013] - or at least transversely to the longitudinal center axis of the machine frame in the area of ​​the cleaning device.

[0014] The movement and / or displacement in the transverse direction mentioned in this application is preferably one in which the orientation, in particular the tilting of a respective screen star and / or screen star frame, is essentially maintained and ideally remains unchanged. For this purpose, regardless of the option of changing its orientation or tilting through other movements and / or measures, for example,

[0015] - a multi-joint bearing, for example in the form of a parallelogram guide,

[0016] - a number of, for example, two parallelogram links pivoted on supports of the machine frame, and / or

[0017] - one or more adjusting means, for example in the form of a hydraulic cylinder, can be provided, optionally for one or more screening star frames, in particular for several screening star frames together. The increased installation space, particularly for lifting operation, allows throughput and cleaning to be significantly increased with improved, gentle conveying. At least one screening star can be pivoted out in the lifting position in order to increase the cleaning distance and throughput volume. In addition, one or more larger stars, which require more installation space during operation, can be used. The design according to the invention allows the potential of larger screening stars to be utilized by optimally relocating them laterally during operation. The cleaning distance and the cleaning area are correspondingly increased. Pivoting also allows more freedom to adjacent components.

[0018] The movement preferably takes place in such a way that the at least one movable sieve star can be transferred from a transport position into an operating position which extends laterally over an edge of the beet harvester. In the transport position, the beet harvester is in particular provided with the maximum permissible width of 3 m for road travel. In the operating position, i.e. during digging in a field, the width of 3 m permissible in Germany, for example, is exceeded when viewed in the longitudinal direction and when the beet harvester is aligned straight ahead and not in a crab steering position. For the present invention, for example, the longitudinal center axis is always assumed to be that the machine is aligned straight ahead, i.e. the machine is not in a crab steering position or cornering.The longitudinal center axis is a longitudinal axis through the machine, which, in a plan view, runs centrally from rear to front through the beet harvester. The orientation, in particular the tilt of a respective screening star and / or screening star frame, can be substantially maintained during its movement in the transverse direction. Furthermore, a plurality of discretely or continuously variable operating positions can be set, in which the respective screening star or screening star frame is displaced, in particular pivoted or shifted, to varying degrees in the transverse direction, essentially independent of its orientation, in particular its tilt.

[0019] The screen star can be mounted directly or indirectly on the machine frame for movement, for example, via a dedicated screen star frame in which the screen star axis is mounted. Perpendicular to the longitudinal center axis or in the transverse direction means that the screen star can move not just slightly by a few centimeters, but by at least 5 cm, preferably by a maximum of 100 cm, in particular by at least 10 cm to 30 cm, and furthermore in particular by 10 to 50 cm in the transverse direction, regardless of whether there is additional movement in the longitudinal direction.

[0020] The beet harvester preferably has at least two screening stars, wherein the screening stars are arranged on the machine frame so that they can move relative to each other in the transverse direction. By changing the spacing between the screening stars, the length of the cleaning section can be varied, for example, depending on the soil conditions and / or for a more intensive cleaning process. Furthermore, one of the screening stars can be fixedly arranged on the machine frame, while the other, at least one, screening star is movable in the transverse direction, perpendicular to the longitudinal center axis.

[0021] In an advantageous development of the beet harvesting machine according to the invention with at least three screening stars, at least two of the at least three screening stars are arranged on the machine frame so that they can move in the transverse direction. The movable screening stars can be moved into an operating position in which more installation space is available, so that the screening stars can have a larger circular diameter. In particular, at least the second or the second and third screening stars are mounted on the machine frame so that they can move in the transverse direction. Thus, one screening star, which receives beets from a conveyor device located, for example, between the front drive means, is arranged in a fixed position relative to the conveyor device, while the two subsequent screening stars are arranged so that they can move in the transverse direction to vary the screening distance.

[0022] According to a further development of the invention, a transverse movement of the at least two sieve stars can also result from a movement of the two sieve stars in different directions, so that a movement of the sieve stars in opposite directions of 5 cm each results in a total transverse movement of 10 cm.

[0023] In particular, the transversely movable screen stars are arranged on the machine frame via a common screen star frame, allowing them to move transversely. The two movable screen stars can thus be centrally mounted. They are moved simultaneously, in particular by an actuating device assigned to the screen star frame.

[0024] Preferably, the sieve star frame is mounted on the machine frame so that it can pivot and / or move linearly. The pivoting movement occurs in particular about one or more pivot axes running in the longitudinal direction, i.e., parallel to the longitudinal center axis of the beet harvester. Alternatively, it can also be pivoted about a pivot axis aligned vertically to the ground. Compared to linear movement of the sieve stars, pivoting offers the advantage of simpler and less susceptible to contamination bearings.

[0025] Alternatively, the transversely movable screening stars are each arranged on the machine frame via their own separate screen star frames. With this type of design, the screening stars can be moved in the same direction or in opposite directions, which increases the flexibility of the beet harvester. Even with this type of design, the screening star frames can each be pivotably and / or linearly displaceably arranged on the machine frame. It goes without saying that with this variant, too, one or more adjusting devices are advantageous for moving the screening star(s) back and forth between the various positions in the transverse direction and thus transversely to the longitudinal center axis. The screening star frames can also be coupled via a coupling rod in order to use only one adjusting device for the screening star frames, which then cannot move independently of one another.The term sieve star frame refers in particular to at least that part of the cleaning device on which a respective sieve star is rotatably mounted.

[0026] Preferably, the at least one sieve star frame is mounted on the machine frame via a multi-joint bearing, particularly designed as a parallelogram guide. This type of bearing is sufficiently stable, especially under load, and does not require any additional support towards the ground to absorb any loads due to the crop flow.

[0027] Preferably, the cleaning device and the conveying device overlap in a plan view both in the operating position and in the transport position, so that in both positions the cleaning device can move the crop flow through the sieve star arrangement.

[0028] In particular, the mobility of the screen star allows the height of a drop step of the cleaning device to be adjusted. This improves the adaptability of the cleaning tasks, particularly those performed by two or three screen stars.

[0029] Further advantages and details of the invention can be found in the following description of the figures. Schematically shown:

[0030] Fig. 1 shows an object according to the invention in a side view, Fig. 2 shows a cleaning device according to the invention in a plan view in the transport position,

[0031] Fig. 3 is a further, partially broken away view of the article according to Fig. 2,

[0032] Fig. 4 is a sectional view of the article according to Fig. 3 along IV-IV,

[0033] Fig. 5 shows the object according to Fig. 2 in an operating position,

[0034] Fig. 6 the object according to Fig. 5 in a further, partially broken

[0035] Opinion,

[0036] Fig. 7 is a sectional view of the article according to Fig. 5 according to VIII-VII.

[0037] Parts with the same or similar functions are provided with identical reference numerals where appropriate. The features and details of the invention described below may also be the subject of the invention in combinations other than those shown in the exemplary embodiments, as well as with the features of the independent claim.

[0038] A beet harvesting machine 2 according to the invention is presently designed as a self-propelled beet harvesting machine 2. In addition to a lifting unit 3, it has a machine frame 4 which, as a supporting basic structure, carries both a cleaning device 10 and a part of a conveying device 12 designed as an elevator (Fig. 1). The conveying device also comprises a conveyor belt 15 forming a conveying path between the lifting unit 3 and the cleaning device 10 (Fig. 2). Beets that are lifted during operation of the beet harvesting machine are transported by the conveyor belt 15 via three screening stars 8 to a receiving area 25 of the elevator. In order to transfer the beets, which are initially transferred from the conveyor belt 15 to a first screening star 8 in the conveying direction F, to the second screening star 8, the latter is arranged slightly below the first screening star 8 and thus forms a drop step 24 (Fig. 4).Furthermore, there is a drop step between the second sieve star 8 and the third sieve star 8.

[0039] According to the invention, the second and third screening stars 8, viewed in the conveying direction F, are pivotally mounted on the machine frame 4 via a common screening star frame 18. Figures 2, 3 and 4 illustrate the arrangement of the screening stars 8 in a transport position intended for road travel, in which the screening stars do not protrude beyond the sides of the beet harvester indicated by dashed lines 26.

[0040] Both in the transport position shown in Fig. 2 and in the operating position shown in Fig. 5, the third screening star 8 and the receiving area 25 overlap, so that beets already harvested in the transport position can be transported to the receiving area 25.

[0041] The second and third screening stars are pivotally mounted on the machine frame 4 via their common frame 18. For this purpose, a multi-joint bearing in the form of a parallelogram guide with two parallelogram links 28 is designed, which are pivotally mounted on supports 30 of the machine frame 4 (cf. Figs. 3 to 7). Furthermore, an adjusting means 32 in the form of a hydraulic cylinder is arranged on the machine frame 4. Due to the adjusting means 32, the screening star frame 18 pivots in a parallelogram manner from the storage position into the operating position shown in Figs. 5 to 7, in which the second screening star 8, displaced in the transverse direction Q, projects beyond the side edge, indicated by a straight line 26, of the beet harvester 2. In this operating position, the cleaning path is extended by the three screening stars 8, which leads to improved cleaning anddue to the possible higher conveying speeds, this leads to an increased conveying quantity through the three sieve stars 8 of the cleaning device 10.

[0042] By pivoting the parallelogram links 28 about respective pivot axes 34 parallel to the longitudinal center axis 16, different distances arise between the tines 36 of the first screening star and the tines 38 of the second screening star, depending on the pivot angle and the link lengths. This results in the drop step 24 shown in Fig. 4, which varies depending on the pivot angle.

Claims

Patent claims 1 . Beet harvesting machine, in particular for sugar beets, with a machine frame (4), a cleaning device (10) having at least one sieve star (8) rotatable about a sieve star axis, which is arranged on the machine frame (4), a conveyor device (12) and a bunker (14) for the intermediate storage of harvested beets, characterized in that the sieve star (8) is mounted on the machine frame (4) so ​​as to be movable in a transverse direction (Q) transversely to a longitudinal central axis (16) of the beet harvesting machine (2).

2. Beet harvesting machine according to claim 1 with at least two sieve stars (8), characterized in that the sieve stars (8) are arranged on the machine frame (4) so ​​as to be movable relative to one another in the transverse direction (Q).

3. Beet harvesting machine according to one of the preceding claims, comprising at least three screening stars (8), characterized in that at least two of the at least three screening stars (8) are arranged on the machine frame (4) so ​​as to be movable in the transverse direction (Q).

4. Beet harvesting machine according to claim 2 or 3, characterized in that the sieve stars (8) movable in the transverse direction (Q) are arranged on the machine frame (4) via a common sieve star frame (18) so as to be movable in the transverse direction (Q).

5. Beet harvesting machine according to claim 4, characterized in that the sieve star frame (18) is arranged pivotably and / or linearly displaceably on the machine frame (4).

6. Beet harvesting machine according to claim 2 or 3, characterized in that the sieve stars (8) movable in the transverse direction (Q) are arranged on the machine frame (4) so ​​as to be movable in the transverse direction (Q) via respective sieve star frames.

7. Beet harvesting machine according to claim 6, characterized in that the sieve star frames are each arranged pivotably and / or linearly displaceably on the machine frame (4).

8. Beet harvesting machine according to one of the preceding claims, characterized in that a suspension device or other holder connected to the machine frame, in particular a number of suspension points of one or more sieve stars (8) and / or sieve star frames (18), can be displaced by the bearing which is movable in the transverse direction transversely to the longitudinal central axis (16).

9. Beet harvesting machine according to one of claims 2 to 8, characterized in that a second sieve star frame (18) is arranged transversely relative to a a first sieve star frame (18) arranged upstream of said first sieve star frame and / or a third sieve star frame (18) is movably mounted and / or movably displaceable in the transverse direction relative to a second sieve star frame (18) arranged upstream of said second sieve star frame.

10. Beet harvesting machine according to one of the preceding claims, characterized in that the length of a cleaning section formed by the sieve stars (8) can be varied, in particular independently of an orientation and / or tilting of the respective sieve stars (8) and / or sieve star axes, by means of displacements of the positions, in particular transverse positions, of a second sieve star (8) and / or second sieve star frame (18) and of a third sieve star (8) and / or third sieve star frame (18) that can be made in opposite directions to one another in the transverse direction.

11. Beet harvesting machine according to one of claims 4 to 10, characterized in that the at least one sieve star frame (18) is arranged on the machine frame (4) via a multi-joint bearing (20) designed in particular as a parallelogram guide.

12. Beet harvesting machine according to one of the preceding claims, characterized in that the at least one movable sieve star (8) can be transferred from a transport position into an operating position projecting laterally beyond an edge (26) of the beet harvesting machine.

13. Beet harvesting machine according to one of the preceding claims, characterized in that the cleaning device (10) and the conveying device (12) overlap in a plan view both in the operating position and in the transport position.

14. Beet harvesting machine according to claim 12 or 13, characterized in that in the operating position the position of one or more sieve star frames (18), in particular the position of a suspension and / or a number of suspension points of one or more sieve star frames (18) can be varied in the transverse direction, in particular independently of an orientation and / or tilting of the respective sieve stars (8) and / or sieve star axes in the transverse direction.

15. Beet harvesting machine according to one of the preceding claims, characterized in that by means of the mobility of the at least one screening star (8) a drop step (24) of the cleaning device (10) can be varied in height.

16. Beet harvesting machine according to one of the preceding claims, characterized in that by means of the mobility of the at least one screening star (8) and / or screening star frame (18), the drop height of a drop step (24) between a second screening star (8) and a first screening star (8) arranged upstream thereof and / or the drop height of a drop step (24) between a third screening star (8) and a second screening star (8) arranged upstream thereof can be varied, in particular independently of an orientation and / or tilting of the respective screening stars (8) and / or screening star axes.

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