Harvesting Attachment for a Harvester

Abstract

A harvesting attachment for a harvester comprises a frame which includes a rear wall and a base wall. The frame is formed as an extrusion profile.

Claims

1. A harvesting attachment having a frame comprising a rear wall and a base wall, wherein the frame is formed as an extrusion profile.

2. A harvesting attachment according to claim 1, wherein the frame is formed as a light metal extrusion profile.

3. A harvesting attachment according to claim 1, further comprising a curved connection wall between the rear wall and the base wall.

4. A harvesting attachment according to claim 1, wherein the frame is composed of a plurality of extrusion profile parts.

5. A harvesting attachment according to claim 4, wherein the extrusion profile parts are welded to one another.

6. A harvesting attachment according to claim 4, wherein, the frame comprises an extrusion profile rear wall, an extrusion profile base wall and a curved extrusion profile connection wall.

7. A harvesting attachment according to claim 1, wherein at least one of the extrusion profile, the extrusion profile rear wall, the extrusion profile base wall and the extrusion profile connection wall have a front wall and a back wall.

8. A harvesting attachment according to claim 7, wherein the bracing walls extend perpendicular to at least one of the front wall and the back wall.

9. A harvesting attachment according to claim 7, wherein the bracing walls extend obliquely to at least one of the front wall and the back wall.

10. A harvesting attachment according to claim 1, wherein the frame is provided with a guide housing for a base that is longitudinally displaceably supported therein.

11. A harvesting attachment according to claim 10, wherein the displaceable base is formed as an extrusion profile.

12. A harvesting attachment according to claim 1, further comprising a cover sheet attached to the front side of the frame.

13. A harvesting attachment according to claim 12, wherein the cover sheet is galvanically separated from the extrusion profile.

Description

[0026] Embodiments of the invention will be explained in detail in the following with reference to the enclosed drawing. There are shown in

[0027] FIG. 1 a harvesting attachment in a perspective view from the front;

[0028] FIG. 2 the harvesting attachment according to FIG. 1 in a perspective view from the rear;

[0029] FIG. 3 the harvesting attachment according to FIGS. 1 and 2 in a view from the front;

[0030] FIG. 4 the detail B from FIG. 1 in an enlarged view;

[0031] FIG. 5 a section along the line C-C in FIG. 3;

[0032] FIG. 6 a section along the line D-D in FIG. 3;

[0033] FIG. 7 the detail F from FIG. 5 in an enlarged view;

[0034] FIG. 8 the harvesting attachment according to FIGS. 1 to 7 provided with a base in a perspective view from the front;

[0035] FIG. 9 the harvesting attachment according to FIG. 8 in a perspective view from the rear;

[0036] FIG. 10 the harvesting attachment according to FIGS. 8 and 9 in a view from the rear;

[0037] FIG. 11 a section along the line A-A in FIG. 10;

[0038] FIG. 12 a section along the line G-G in FIG. 10; and

[0039] FIG. 13 the detail E from FIG. 8 in an enlarged view.

[0040] The harvesting attachment for a harvester, in particular for a combine harvester, shown in FIG., 1 comprises a frame 1 which has a rear wall 2 and a base wall 3. The frame 1 has an L-shaped angular form. The rear wall 2 extends substantially in the vertical direction and the base wall 3 extends substantially in the horizontal direction.

[0041] The longitudinal extent of the frame 1 corresponds to the working width. The frame 1 has side walls 4 at its ends.

[0042] The rear wall 2 is provided with an elevated portion 5 at the center of the frame 1. The elevated portion 5 extends as a prolongation of the rear wall 2. It has laterally inclined portions 6. The inclined portions 6 are covered by a cover sheet 7, as shown also in FIG. 4.

[0043] Furthermore, a passage opening 8 is provided at the center of the rear wall 2 and is bounded on both sides by the rear wall sections, and by the base wall 3 and the elevated portion 5 as well. The passage opening 8 can serve to mount the frame 1 to the harvesting vehicle. The crop can further be conveyed through the passage opening 3 from the front side of the frame 1 to the harvesting vehicle. An auger (not shown in the drawing) can be provided in the frame 1 to convey the harvest.

[0044] FIG. 2 shows the frame 1 in a perspective representation from the rear.

[0045] The frame 1 is shown in a view from the front in FIG. 3.

[0046] The frame 1 is formed as an extrusion profile as can be seen in particular from FIGS. 5 and 6. It is a light metal extrusion profile of aluminum or of a material containing aluminum. A curved connection wall 9 is present between the rear wall 2 and the base wall 3. The rear wall 2 and the base wall 3 are connected to one another by the connection wall 9.

[0047] The frame 1 is composed of a plurality of extrusion profile parts. These are an extrusion profile rear wall 10, an extrusion profile base wall 11 and a curved extrusion profile connection wall 12 which are connected to one another, actually welded to one another.

[0048] The extrusion profile rear wall 10 has a front wall 13 and a back wall 14. The front wall 13 and the back wall 14 extend parallel to one another. They are connected to one another by bracing walls 15 which extend perpendicular to the front wall 13 and to the back wall 14. The bracing walls 15 are spaced apart from one another, with the spacing of adjacent bracing walls 15 each being of equal size.

[0049] The front wall 13 and the back wall 14 are furthermore connected to one another by further bracing walls 16 which extend obliquely to the front wall 13 and obliquely to the back wall 14. An obliquely extending bracing wall 16 is present in every area between two adjacent bracing walls 15 and in each case extends diagonally through this field. The obliquely extending bracing walls 16 extend in a zigzag line.

[0050] The extrusion profile base wall 11 is designed in a similar manner. It has a front wall 17 and a back wall 21. The front wall 17 has a straight section 18 at the side facing the connection wall 12, said straight section merging in the direction away from the connection wall 12 into a curved section 19 and into a further straight end section 20 adjoining it. The back wall 21 has on the side facing the connection wall 12 a straight section 22 which extends parallel to the straight section 18 of the front wall 17. A further straight end section 23 adjoins the straight section 22 of the back wall 21 and extends at an angle thereto; its end is connected to the end of the straight end section 20 of the front wall 17.

[0051] The front wall 17 and the back wall 21 are connected to one another by bracing walls 24, 25 which extend perpendicular to the straight sections 18, 20 of the front wall 17. The outer bracing walls 24 also extend perpendicular to the straight sections 22, 23 of the back wall 21. The middle bracing wall 25 extends at an angle to the straight end section 23.

[0052] The front wall 17 and the back wall 21 are furthermore connected to one another by further bracing walls 26 which extend obliquely to the front wall 17 and obliquely to the back wall 21.

[0053] The connection wall 12 has a front wall 27 which comprises three straight sections which each extend at an angle to one another. The first straight section 28 is aligned with the front wall 13 of the rear wall 10; the third straight section 30 is aligned with the straight section 18 of the base wall 11. The second straight section 29 connects the first straight section 28 to the third straight section 30.

[0054] The back wall 31 of the connection wall 12 has the shape of a segment of a circle. It tangentially adjoins both the back wall 14 of the rear wall 10 and the back wall 22 of the base wall 11.

[0055] The connection wall 12 has a first bracing wall 32 which extends from the connection line of the straight sections 28, 29 of the front wall 27 to the center of the curved back wall 31. It furthermore has a second bracing wall 33 which extends from the connection line of the straight sections 29, 30 of the front wall 27 to the center of the curved back wall 31. The connection wall 12 furthermore has a further bracing wall 34 which extends from the connection line of the straight sections 29, 30 of the front wall 27 to the back wall 31 and a further bracing wall 35 which extends from the end of the straight section 30 facing the base wall 11 to the end of the back wall 31 likewise facing the base wall 11. The bracing walls 34, 35 extend perpendicular to the straight section 30 and perpendicular to the back wall 31.

[0056] Further bracing walls 36 are arranged in the field bounded by the bracing walls 34, 35. The bracing walls 36 extend obliquely to the straight section 30 and obliquely to the back wall 31. They are furthermore arranged in a V shape, with the tip of the V being at the center of the bracing wall 34.

[0057] The extrusion profile 37 of the elevated portion 5 is designed in a manner similar to the extrusion profile rear wall 10, as can be seen from FIG. 6. It has a front wall 38, a back wall 39, bracing walls 40 which extend perpendicular to the front wall 38 and to the back wall 39, and bracing walls 41 which extend obliquely to the front wall 38 and to the rear wall 39. The upper end wall 42 of the extrusion profile 37 extends obliquely to the front wall 38 and obliquely to the back wall 39, with the slope facing the side of the base wall 11.

[0058] FIG. 7 shows the weld connection between the connection wall 12 and the base wall 11. The straight section 30 and the back wall 31 project beyond the bracing wall 35. They are aligned with the straight section 18 and with the straight section 22. The straight section 30 and the straight section 18 are positioned abutting one another. The weld seam 43 is located at the abutment line. It connects the straight section 30 to the straight section 18.

[0059] In a corresponding manner, the back wall 31 and the straight section 22 are positioned abutting one another. The weld seam 44 is located at the abutment line. It connects the back wall 31 and the straight section 22.

[0060] The bracing wall 24 connects the ends of the straight sections 18, 22. Positioning sections 45, 46 extend from the bracing wall 24 toward the connection wall 12. They have support heads at their ends which contact the inner sides of the straight section 30 and of the back wall 31. The end of the base wall 11 can in this manner be inserted into the end of the connection wall 12 that faces said end of the base wall, until the straight sections 30, 18 and the back wall 31 and the straight section 22 respectively come into abutment. This assembly movement is guided by the heads of the positioning sections 45, 46. The weld seams 43, 44 then can be applied.

[0061] FIG. 8 shows the harvesting attachment according to FIGS. 1 to 7 with an additional base 50. A cutter bar 51 is attached to the base 50.

[0062] FIG. 9 shows the same frame in a perspective representation from the rear.

[0063] The frame 1 is shown in a view from the rear in FIG. 10.

[0064] As can be seen from FIGS. 11 and 12, the base 50 is longitudinally displaceably supported in a guide housing 52. The base 50 is made as an extrusion profile 62. It includes a front section part 53 and a rear section part 54. The section parts 53, 54 are made from light metal, in particular from aluminum or from a material containing aluminum. They each have a front wall 55 and a back wall 56 which extend parallel to one another. The front wall 55 and the back wall 56 are connected to one another by bracing walls 57 which extend perpendicular to the front wall 55 and perpendicular to the back wall 56. The bracing walls 57 are spaced apart from one another, with the spacing of adjacent bracing walls 57 each being of equal size. The section parts 53, 54 are connected, in particular welded to one another.

[0065] The base 50 has guide sleeves 58 (FIG. 11) which are longitudinally displaceably supported in guide cylinders 59. The guide cylinders 59 are arranged fixed to the frame. They are fastened to cheeks 60 which are in turn fastened to the frame 1. The cheeks 60 are fastened to the rear wall 10 and to the connection wall 12.

[0066] A cover sheet 61 is attached to the front side of the frame 1. The cover sheet 61 is galvanically separated from the extrusion profile 10, 11, 12.

[0067] The extrusion profiles 10, 11, 12 extend over the total working width, hence over the total length of the frame 1.