CN116686550A - combine harvester - Google Patents

Abstract

The invention relates to a combine harvester (1), comprising a chassis frame (8) and a cleaning device as a working unit of the combine harvester (1), said chassis frame having a front axle (2) and a rear axle (3 ), said cleaning device comprises a screen assembly arranged in a screen box, wherein said screen box is arranged in a receiving structure (11) in the front axle (2) Between the receiving part (9) and the receiving part (10) for the rear axle (3) is arranged on the chassis frame (8), wherein the receiving structure (11) is connected to the user via a first reinforcing structure (15) It is connected to the receptacle (9) for the front axle (2) and is connected to the receptacle (10) for the rear axle (3) via a second reinforcement structure (16).

Description

combine harvester

technical field

The invention relates to a self-propelled combine harvester.

Background technique

A self-propelled combine harvester of the aforementioned type is known, for example, from EP 3 150 059 A1. The combine harvester comprises a chassis frame having a reception for a front axle and a rear axle, and a cleaning device comprising a screen assembly arranged in a screen box, wherein the screen box is arranged in a receiving structure, The receptacle is arranged on the chassis frame between the receptacles for the front axle and the rear axle. The receiving structure receives below the screen box a transverse auger extending transversely to the longitudinal axis of the combine, which conveys the grain separated by the cleaning device to the grain elevator. The screen box is mounted approximately horizontally in the combine harvester movably in all directions by four connecting rods, at the ends of which rubber-metal bearings are arranged. The chassis frame is subjected to alternating mechanical loads which are applied to the chassis frame via the front and/or rear axle during travel, in particular due to unevenness in the area to be worked. The forces and torques absorbed by the front and/or rear axle can lead to undesired deformations of the chassis frame.

Contents of the invention

On the basis of the prior art described above, the task of the present invention is to improve a combine harvester which avoids the disadvantages of the prior art, in particular preventing chassis frame damage due to the forces and torques absorbed by the front and/or rear axle out of shape.

This object is solved by a combine harvester having the features of a preferred embodiment of the invention. Advantageous embodiments and developments are given in the alternatives.

According to this preferred solution, a combine harvester is proposed, comprising a chassis frame and a cleaning device as a working unit of the combine, the chassis frame having receiving parts for the front axle and the rear axle, the cleaning device comprising an arrangement A screen assembly in a screen box, wherein the screen box is arranged in a receiving structure arranged on the chassis frame between a reception for the front axle and a reception for the rear axle. According to the invention, the receiving structure is connected via a first reinforcing structure to the receiving part for the front axle and via a second reinforcing structure to the receiving part for the rear axle. The stiffness of the chassis frame is improved by means of the first and second reinforcement structures, so that the chassis frame can absorb greater mechanical loads introduced by the front and/or rear axle substantially without deformation.

In particular, the chassis frame comprises two side members extending parallel to one another. These longitudinal members extend parallel to the longitudinal axis of the chassis frame. Receptacles for the front and rear axles and the receptacle for the screen box are arranged between these longitudinal beams. Receptacles for the front and rear axles are arranged extending transversely between the side members. The receiving structure of the screen box extends between the two stringers in the transverse direction and in sections in the longitudinal direction.

According to a development, the receiving structure can be connected to the chassis frame by a material fit and/or a force fit and a form fit. Preferably, the receiving structure is connected to the chassis frame by a welded connection. Compared to connecting the receiving structure to the chassis frame by means of a screw connection as a non-positive and form-fit connection, an additional increase in the rigidity of the chassis frame can be achieved by the welded connection. To this end, the receiving structure can be connected to the chassis frame along its extension in the longitudinal direction of the combine by a welded connection.

In particular, the receiving structure can have a base extending transversely to the longitudinal axis of the chassis frame and two sides oriented substantially perpendicularly to the base, which are arranged opposite each other on an outer edge region of the base and substantially perpendicular to the The bottom section extends in the longitudinal direction of the chassis frame. The receiving structure may have a substantially U-shaped cross-section relative to the longitudinal axis of the chassis frame.

In this case, the side parts can be connected to the chassis frame by means of welded connections. For this purpose, the sides can extend substantially parallel to the longitudinal beams of the chassis frame. In the region of the outer edge of the sides facing away from the base, these sides can be connected to the corresponding stringer by continuous or discontinuous weld seams. Alternatively, a material-fit and/or force-fit and form-fit connection of the sides to the chassis frame is also conceivable.

According to a refinement, the first reinforcement structure can have at least two longitudinal struts extending substantially parallel to the longitudinal axis of the chassis frame, which are each detachably connected to the receptacle of the front axle and to the receptacle structure. To this end, the longitudinal strut is connected at one end to the reception of the front axle and at the other end to the receiving structure, for example by screwing or bolting.

According to a refinement, the first stiffening structure can have at least two diagonal struts, of which a first diagonal strut, in particular, is detachably fastened at a first connection point to the receptacle of the front axle and is diagonally opposite The other diagonal brace is secured to the receiving structure at a first attachment point and the other diagonal brace is secured to the receiving portion of the front axle at a second attachment point and to the receiving structure at a diagonally opposite second attachment point. The torsional rigidity of the chassis frame can be increased by means of these in particular detachably fastened diagonal struts.

In particular, brackets may be provided for fixing the longitudinal struts and/or the diagonal struts of the first stiffening structure.

In this case, corresponding longitudinal struts can be fastened to supports which are formed or molded onto the front axle receptacle and the receptacle structure. The brackets on the front axle receptacle and on the receptacle structure can be attached to them, for example, by means of a welded connection. In particular, corresponding longitudinal struts can be fastened detachably to these supports. Preferably, the longitudinal strut is fixed on the support by screw connection or bolt connection.

In particular, the first attachment point and the second attachment point of the front axle receptacle are arranged on the side of the receptacle facing the base, and the first attachment point and the second attachment point of the receiving structure are arranged on the base's side facing the front axle on one side of the

Preferably, said two diagonal struts should be arranged between said longitudinal struts. In particular, the longitudinal struts and the diagonal struts can be arranged in a common, substantially horizontally extending plane.

According to a preferred refinement, the second reinforcement structure can have at least two struts, which are fastened to the bottom of the receiving structure and extend in the direction of the rear axle receptacle, wherein the two struts converge (or convergently) extend. In this context, extending convergingly (or convergingly) means that the two struts have a course approaching one another in the direction of the rear axle receptacle starting from the bottom of the receiving structure. The two struts are preferably not joined together at a point on the rear axle receptacle, but are arranged on the chassis frame at a distance from each other in the transverse direction of the chassis frame.

In this case, the at least two struts can be joined together in a common fastening element, via which the struts are connected to the rear axle receptacle.

Further preferably, the at least two struts can extend obliquely in the height direction of the combine harvester. For this purpose, the at least two struts can be arranged with one end on the base. The opposite end of the strut facing the rear axle receptacle is arranged on the rear axle receptacle, wherein the rear axle receptacle is offset in the vertical direction relative to the bottom of the receiving structure. Here, the receiving portion of the rear axle is higher than the bottom of the receiving structure.

Preferably, the longitudinal struts, the diagonal struts and the struts can be designed as open and/or closed profile or profile components. As a result, a reduction in the component weight of the longitudinal struts, diagonal struts and/or struts can be achieved with the same strength as compared to a solid design made of solid material. At least the bottom of the support structure can also be designed as an open and/or closed profile element (or profile element).

Description of drawings

The present invention is explained in detail below with reference to the embodiments shown in the drawings.

In the attached picture:

Figure 1 shows a schematic perspective view of a combine harvester;

Figure 2 shows a simplified schematic perspective view of the chassis frame of the combine harvester;

Figure 3 shows a perspective view of the chassis frame according to Figure 2, without ground engaging means; and Figure 4 shows a view of the underside of the chassis frame.

Detailed ways

FIG. 1 shows a schematic perspective view of a combine harvester 1 . The combine harvester 1 comprises a front axle 2 and a rear axle 3 on which ground engaging devices 4 designed as wheels 5 are arranged. The combine harvester 1 has several work units for processing and handling crops. The working unit 6 forms an attachment 7 for receiving crops. Other not-shown working units 6 form a threshing device, a separating device and a cleaning device arranged inside the combine harvester 1 . The cleaning device includes a screen assembly arranged in the screen box. The above-mentioned working units of the combine harvester 1 are known in principle with respect to their structure and mode of function, so no further explanations are provided in this respect.

FIG. 2 shows a simplified schematic perspective view of the undercarriage frame 8 of the combine harvester 1 . The front axle 2 and the rear axle 3 are shown only symbolically in FIG. 2 . FIG. 3 shows a perspective view of the chassis frame 8 without the ground engaging device 4 . The chassis frame 8 of the combine harvester 1 comprises a receptacle 9 for the front axle 2 and a receptacle 10 for the rear axle 3 . The screen box of the cleaning device is arranged in a substantially box-shaped receptacle 11 which is arranged on the chassis frame 8 between the receptacle 9 for the front axle 2 and the receptacle 10 for the rear axle 3 . Preferably, the receiving structure 11 of the screen box is connected to the undercarriage frame 8 by a material fit and/or a force fit and a form fit connection.

The chassis frame 8 comprises two side members 12 extending parallel to each other. The two longitudinal beams 12 extend parallel to the longitudinal axis L of the chassis frame 8 . The receptacles 9 , 10 for the front axle 2 and the rear axle 3 and the receptacle structure 11 extending transversely to the longitudinal members are arranged between the two longitudinal members 12 . The receiving structure 11 extends between the longitudinal beams 12 in the transverse direction and in sections in the longitudinal direction.

The receiving structure 11 has a base 13 extending transversely to the longitudinal axis L of the chassis frame 8 and sides 14 each oriented substantially perpendicularly to the base 13 . The base 13 extends substantially parallel to a horizontal plane spanned by the two longitudinal beams 12 . The sides 14 are arranged opposite each other on outer edge regions of the base 13 and extend substantially perpendicularly to this section of the base 13 in the longitudinal direction of the chassis frame 8 . In particular, the side parts 14 are connected to the chassis frame 8 by welded connections.

The receptacle 11 is connected via a first reinforcement structure 15 to the receptacle 9 for the front axle 2 and via a second reinforcement structure 16 to the receptacle 10 for the rear axle 3 . The rigidity of the chassis frame 8 is improved by means of the first reinforcement structure 15 and the second reinforcement structure 16, so that the chassis frame 8 can absorb the introduction of the front axle 2 and/or the rear axle 3 into the chassis frame in a substantially deformation-free manner. 8 for greater mechanical loads.

As shown in FIG. 3 , a trough 27 is arranged on the upper side of the bottom 13 , to which the cleaned crops separated by the cleaning device reach. Above the trough plate 27, a not shown transverse screw conveyor is arranged, which transports the cleaned crop away.

FIG. 4 shows a view of the underside of the chassis frame 8 to better illustrate the arrangement of the first reinforcement structure 15 and the second reinforcement structure 16 .

The first reinforcement structure 15 has at least two longitudinal struts 17 extending substantially parallel to the longitudinal axis L, which are each detachably connected to the receptacle 9 of the front axle 2 and the receptacle 11 of the screen box. A screw connection may be provided to detachably fix the longitudinal strut 17 on the receiving portion 9 and the receiving structure 11 . In order to fix the longitudinal struts 17, brackets 18 formed on the receiving part 9 and the receiving structure 11, respectively, can be arranged on these longitudinal struts.

Furthermore, the first reinforcement structure 15 has at least two diagonal struts 19 , 20 . A diagonal strut 19 is detachably fastened to the receiving portion 9 of the front axle 2 at a first attachment point 21 and to the receiving structure 11 at a diagonally opposite first attachment point 22 . A further diagonal brace 20 is detachably fastened at a second attachment point 23 to the receiving portion 9 of the front axle 2 and at a diagonally opposite second attachment point 24 to the receiving structure 11 . The first connection point 21 and the second connection point 23 of the receptacle 9 of the front axle 2 are arranged on the side of the receptacle 9 facing the bottom 13 . The first attachment point 22 and the second attachment point 24 of the receiving structure 11 are arranged on the side of the base 13 facing the front axle 2 .

The two diagonal struts 19 , 20 are arranged between the longitudinal struts 17 . In particular, the longitudinal struts 17 and the diagonal struts 19 , 20 can be arranged substantially in a common horizontal plane on the underside of the chassis frame 8 .

The second reinforcement structure 16 has at least two struts 25 . These struts 25 are fastened to the base 13 of the receiving structure 11 and extend in the direction of the receptacle 10 for the rear axle 3 . The two struts 25 have a converging arrangement. The two struts 25 are fastened at a distance from one another in the transverse direction of the chassis frame 8 to the receptacle 10 of the rear axle 3 . Here, the arrangement of struts 25 essentially corresponds to an isosceles triangle. The at least two struts 25 can be joined together in a common fastening element 26 via which they are connected to the receptacle 10 of the rear axle 3 . Furthermore, the at least two struts 25 extend obliquely in the height direction of the combine harvester 1 . Starting from the lower bottom 13 of the receiving structure 11 , the at least two struts 25 are arranged rising in the direction of the higher receiving portion 10 of the rear axle 3 , as shown in FIG. 3 .

Preferably, the longitudinal struts 17 , the diagonal struts 19 , 20 and the struts 25 and at least the bottom 13 of the receiving structure 11 are designed as open and/or closed profile or profile components.

List of reference signs

1 combine harvester

2 front axles

3 rear axles

4 ground engaging devices

5 wheels

6 work units

7 attachments

8 chassis frame

9 Receiving Department

10 Receiving Department

11 receiving structure

12 stringers

13 bottom

14 side

15 first reinforcement structure

16 second reinforcement structure

17 Longitudinal struts

18 brackets

19 diagonal braces

20 diagonal braces

21 9's First Link

22 11 of the first junction

23 9's Second Link

24 11 second junction

25 poles

26 fixed elements

27 slot plate

L vertical axis.

Claims (13)

1. A combine harvester (1), comprising a chassis frame (8) and a cleaning device as a working unit of the combine harvester (1), the chassis frame has a front axle (2) and a rear axle (3) receiving parts (9, 10), said cleaning device comprises a screen assembly arranged in a screen box, wherein said screen box is arranged in a receiving structure (11) for receiving the front axle (2) part (9) and the receiving part (10) for the rear axle (3) is arranged on the chassis frame (8), characterized in that the receiving structure (11) passes through the first reinforcing structure (15) It is connected to the receptacle (9) for the front axle (2) and via the second reinforcement (16) to the receptacle (10) for the rear axle (3). 2. The combine harvester (1) according to claim 1, characterized in that the receiving structure (11) is connected to the chassis frame (8) in a material fit and/or force fit and form fit manner. 3. The combine harvester (1) according to claim 1 or 2, characterized in that the receiving structure (11) has a bottom ( 13) and two sides (14) oriented substantially perpendicular to the bottom (12), which are arranged opposite each other on the outer edge region of the bottom (13) and are substantially perpendicular to the bottom (12 ) sectionally extends in the longitudinal direction of the chassis frame (8). 4. The combine harvester (1) according to claim 3, characterized in that, the side portion (14) is connected to the chassis frame (8) through a welded connection portion. 5. The combine harvester (1) according to one of the preceding claims, characterized in that said first reinforcement structure (15) comprises at least two longitudinal struts extending substantially parallel to said longitudinal axis (L) Rods (17), these longitudinal struts are respectively detachably connected to the receiving portion (9) of said front axle (2) and said receiving structure (11). 6. Combine harvester (1) according to one of the preceding claims, characterized in that said first reinforcement structure (15) comprises at least two braces (19, 20), one of which (19) fixed to the receiving portion (9) of said front axle (2) at a first attachment point (21) and to said receiving structure (11) at a diagonally opposite first attachment point (22), And another diagonal brace (20) is fixed on the receiving part (9) of said front axle (2) at the second joint point (23) and fixed at the diagonally opposite second joint point (24) on said receiving structure (11). 7. The combine harvester (1) according to claim 6, characterized in that the corresponding longitudinal struts (17) are arranged on a bracket (18) shaped in the reception of the front axle (2) part (9) and said receiving structure (11). 8. The combine harvester (1) according to claim 6 or 7, characterized in that the first connection point (21) and the second connection point (22) of the receiving portion (9) of the front axle (2) ) is arranged on the side of the receiving part (9) facing the bottom (13), and the first attachment point (23) and the second attachment point (24) of the receiving structure (11) are arranged on the On the side of the bottom (13) facing the front axle (2). 9. The combine harvester (1) according to any one of claims 6 to 8, characterized in that a bracket (18) is provided to fix the longitudinal struts (17) and/or Diagonal braces (19, 20). 10. The combine harvester (1) according to one of the preceding claims, characterized in that said second reinforcement structure (16) comprises at least two struts (25) fixed on said receiving The structure (11) extends on the bottom (13) and in the direction of the receptacle (10) of the rear axle (3), wherein the at least two struts (25) extend convergingly. 11. The combine harvester (1) according to claim 10, characterized in that said at least two struts (25) are joined together in a common fixing element (26), said struts (25) The fastening element is connected to the receptacle (10) of the rear axle (3). 12. The combine harvester (1 ) according to claim 10 or 11, characterized in that the at least two struts (25) extend obliquely in the height direction of the combine harvester (2). 13. The combine harvester (1) according to any one of claims 5 to 12, characterized in that the longitudinal struts (17), the diagonal struts (19, 20) and the struts ( 25) Embodying as an open and/or closed profiled component.