A corn harvester header deployment positioning device

Abstract

This utility model relates to a corn harvesting header deployment and positioning device, belonging to the field of agricultural machinery manufacturing technology. The technical solution is as follows: the positioning plate has a concave groove, and the alignment plate has a protrusion. The protrusion and the concave groove are fitted together, and the positioning plate and the alignment plate are interconnected to form a docking positioning structure. The concave groove entrance of the positioning plate has groove guide rounded corners on both sides. The sliding surface of the groove and the bottom surface of the groove form an obtuse angle, and the sliding surface of the groove and the bottom surface of the groove form an acute angle. A positioning plate stress relief groove is provided at this acute angle. Alignment plate stress relief grooves are provided on both sides of the root of the protrusion of the alignment plate. The beneficial effects of this utility model are: rapid, rigid, and precise locking after the header is deployed; accurate vertical positioning between adjacent cutter roller frames of the main and auxiliary beams is achieved through the mutual docking and bearing of the positioning plate and the alignment plate, ensuring the reliability and consistency of the ear-picking device during operation.

Description

Technical Field

[0001] This utility model relates to a corn harvesting header deployment and positioning device, belonging to the field of agricultural machinery manufacturing technology. Background Technology

[0002] With the continuous improvement of agricultural scale and intensification, large-scale, wide-width corn harvesting headers are widely used due to their high operating efficiency. To facilitate road transport and field relocation, the headers are typically designed with a foldable structure; however, they need to be unfolded again for field operations. Examples include Chinese patent applications CN 202321993258.7 ("A Folding Device for a Corn Harvester's Header") and CN 201520467097.7 ("Foldable Corn Header"), both employing a folding method for the main and auxiliary headers. After unfolding, the main and auxiliary headers need to be positioned and locked. Under complex and bumpy field operating conditions, existing positioning devices struggle to ensure that the ear-picking devices on the main and auxiliary headers remain on the same working plane. This alignment deviation not only affects the machine's operational stability and service life but also poses potential structural safety hazards.

[0003] In addition, the existing technology has poor matching shapes between the two connecting hooks, which can easily lead to unstable hooking. Utility Model Content

[0004] The purpose of this utility model is to provide a corn harvesting header deployment and positioning device that achieves rapid, rigid, and precise locking after the main header and auxiliary header are deployed into position. With the mutual docking and support of the positioning plate and the alignment plate, the positioning of the main header and auxiliary header is accurately realized, ensuring the reliability and consistency of the ear-picking device during operation. Moreover, the structure is relatively simple, easy to maintain, and saves production costs, thus solving the above-mentioned technical problems existing in the prior art.

[0005] The technical solution of this utility model is: a corn harvesting header deployment and positioning device, installed between the main header and the auxiliary header of a foldable header, comprising a positioning plate, an alignment plate, a secondary beam boundary cutter roller frame, a main beam boundary cutter roller frame, a picking transfer box, a secondary beam of the header frame, and a main beam of the header frame. The main header frame has a forward-extending main beam boundary cutter roller frame on its main beam, and the auxiliary header frame has a forward-extending secondary beam boundary cutter roller frame on its secondary beam. Both the secondary beam boundary cutter roller frame and the main beam boundary cutter roller frame are arranged opposite each other near the folding position of the main and auxiliary headers. Both the main beam boundary cutter roller frame and the secondary beam boundary cutter roller frame are equipped with picking transfer boxes. The front end of the secondary beam boundary cutter roller frame has a positioning plate, and the front end of the main beam boundary cutter roller frame has an alignment plate that matches the positioning plate. The positioning plate has a concave groove, and the alignment plate has a protrusion. The protrusion and the concave groove are fitted together and matched. The positioning plate and the alignment plate are interconnected to form a docking positioning structure. The concave groove entrance of the positioning plate has groove guide rounded corners on both sides. The bottom surface of the groove is inclined. The upper sliding surface and the lower sliding surface of the groove on both sides are arranged parallel to each other. The angle between the upper sliding surface and the bottom surface of the groove is obtuse, and the angle between the lower sliding surface and the bottom surface of the groove is acute. A positioning plate stress relief groove is provided at the acute angle. The protrusion of the alignment plate includes an upper sliding surface, a lower sliding surface, and a top surface. The angle formed between the upper sliding surface, the lower sliding surface, and the top surface of the protrusion is the protrusion guide rounded corner. Alignment plate stress relief grooves are provided on both sides of the root of the protrusion. The positioning plate stress relief grooves and the alignment plate stress relief grooves prevent stress concentration and fatigue fracture of the protrusion during support.

[0006] Furthermore, the protrusion of the positioning plate slides into the concave groove of the alignment plate, the sliding surface of the protrusion contacts the sliding surface of the groove, and the sliding surface of the protrusion contacts the sliding surface of the groove. Through the interaction force of the contact surfaces, the upper and lower support positioning of the main beam boundary cutter roller frame and the secondary beam boundary cutter roller frame is achieved, so as to ensure that the main and secondary beam ear picking devices are located on the same plane and locked in the corresponding position when the corn harvesting header is deployed, avoiding structural hazards to the equipment and reducing the service life of the machine due to complex and bumpy field operations.

[0007] Furthermore, the positioning plate and the alignment plate are respectively provided with positioning plate mounting holes and alignment plate mounting holes.

[0008] Furthermore, the tail end of the main beam boundary cutter roller frame is provided with a right cutter roller frame mounting plate, which is connected to the right cutter roller frame mounting base surface on the ear-picking transfer box above it; the tail end of the secondary beam boundary cutter roller frame is provided with a left cutter roller frame mounting plate, which is connected to the left cutter roller frame mounting base surface on the ear-picking transfer box above it.

[0009] Furthermore, the main beam and the secondary beam of the header frame are respectively equipped with a transfer box main beam and a transfer box secondary beam. There are multiple ear-picking transfer boxes, which are arranged sequentially on the transfer box main beam and the transfer box secondary beam according to the corn harvesting header row spacing specifications.

[0010] The beneficial effects of this utility model are: it achieves rapid, rigid and precise locking after the cutting table is unfolded into place; under the mutual docking and bearing of the positioning plate and the alignment plate, it accurately realizes the vertical positioning between the adjacent cutter roller frames of the main and auxiliary beams, ensuring the reliability and consistency of the ear-picking device during operation; and the structure is relatively simple, easy to maintain, and saves production costs. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the assembly of the positioning plate and the alignment plate according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the positioning plate structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the alignment plate structure according to an embodiment of the present invention; Figure 4 This is a structural diagram illustrating the application process of an embodiment of the present invention; Figure 5 This is an embodiment of the present invention. Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 This is a diagram illustrating the unfolding action of the cutting platform according to an embodiment of the present invention; Figure 7 This is an embodiment of the present invention. Figure 6 Enlarged structural diagram at point B; Figure 8 This is a schematic diagram of the secondary beam boundary cutter roller frame structure according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the main beam boundary cutter roller frame structure according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the ear-picking separation box structure according to an embodiment of the present invention; In the diagram: Positioning plate 1, Positioning plate stress relief groove 101, Groove guide fillet 102, Groove sliding surface 103, Groove upper sliding surface 104, Concave groove 105, Groove bottom surface 106, Positioning plate mounting hole 107, Alignment plate 2, Alignment plate stress relief groove 201, Protrusion guide fillet 202, Protrusion upper sliding surface 203, Protrusion sliding surface 204, Protrusion 205, Protrusion top surface 206, Alignment plate mounting hole 207, Sub-beam boundary cutter roller frame 3, Left cutter roller frame mounting plate 301, Main beam boundary cutter roller frame 4, Right cutter roller frame mounting plate 401, Harvesting transfer box 5, Left cutter roller frame mounting base 501, Right cutter roller frame mounting base 502, Harvesting sprocket 503, Cutting table frame sub-beam 6, Transfer box sub-beam 601, Cutting table frame main beam 7, Transfer box main beam 701. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] See attached document Figure 1-10 A corn harvesting header deployment and positioning device is installed between the main header and the auxiliary header of a foldable header. It includes a positioning plate 1, an alignment plate 2, a secondary beam boundary cutter roller frame 3, a main beam boundary cutter roller frame 4, a picking transfer box 5, a header frame auxiliary beam 6, and a header frame main beam 7. The main header frame main beam 7 has a forward-extending main beam boundary cutter roller frame 4, and the auxiliary header frame auxiliary beam 6 has a forward-extending secondary beam boundary cutter roller frame 3. Both the secondary beam boundary cutter roller frame 3 and the main beam boundary cutter roller frame 4 are arranged opposite each other near the folding position of the main and auxiliary headers. Both the main beam boundary cutter roller frame 4 and the secondary beam boundary cutter roller frame 3 are equipped with picking transfer boxes 5. The front end of the secondary beam boundary cutter roller frame 3 has a positioning plate 1, and the front end of the main beam boundary cutter roller frame 4 has an alignment plate 2 that matches the positioning plate 1. The positioning plate 1 has a concave groove 105, and the alignment plate 2 has a protrusion 205. The positioning plate 1 and the alignment plate 2 are interlocked to form a docking positioning structure, which is matched with the concave groove 105. The concave groove 105 of the positioning plate 1 has groove guide rounded corners 102 on both sides at the entrance. The bottom surface 106 of the groove is an inclined surface. The upper sliding surface 104 and the lower sliding surface 103 of the groove on both sides are arranged parallel to each other. The angle between the upper sliding surface 104 and the bottom surface 106 of the groove is an obtuse angle, and the angle between the lower sliding surface 103 and the bottom surface 106 of the groove is an acute angle. A positioning plate stress relief groove 101 is provided at the acute angle. The protrusion 205 of the alignment plate 2 includes an upper sliding surface 203, a lower sliding surface 204, and a top surface 206. The angle formed between the upper sliding surface 203 and the lower sliding surface 204 and the top surface 206 is the protrusion guide rounded corner 202. Alignment plate stress relief grooves 201 are provided on both sides of the root of the protrusion 205. The stress relief groove 101 of the positioning plate and the stress relief groove 201 of the alignment plate prevent the protrusion 205 from experiencing stress concentration and fatigue fracture during the support process.

[0014] See attached document Figure 1-4 The protrusion 205 of the positioning plate 1 slides into the concave groove 105 of the alignment plate 2. The sliding surface 203 of the protrusion 205 contacts the sliding surface 104 of the groove of the concave groove 105. The sliding surface 204 of the protrusion 205 contacts the sliding surface 103 of the groove of the concave groove 105. The interaction force of the contact surfaces realizes the upper and lower support positioning of the main beam boundary cutter roller frame 4 and the secondary beam boundary cutter roller frame 3. This ensures that the main and secondary beam ear picking devices are located on the same plane and locked in the corresponding positions when the corn harvesting header is deployed. This avoids structural hazards caused by complex and bumpy field operations and reduces the service life of the machine.

[0015] See attached document Figure 1 The positioning plate 1 and the alignment plate 2 are respectively provided with positioning plate mounting holes 107 and alignment plate mounting holes 207. In this embodiment, there are two positioning plate mounting holes 107 and two alignment plate mounting holes 207.

[0016] See attached document Figure 8-10 The tail end of the main beam boundary cutter roller frame 4 is provided with a right cutter roller frame mounting plate 401, which is connected to the right cutter roller frame mounting base 502 on the ear-picking transfer box above it; the tail end of the secondary beam boundary cutter roller frame 3 is provided with a left cutter roller frame mounting plate 301, which is connected to the left cutter roller frame mounting base 501 on the ear-picking transfer box above it.

[0017] See attached document Figure 6 The main beam 7 and secondary beam 6 of the header frame are respectively equipped with a transfer box main beam 701 and a transfer box secondary beam 601. Multiple ear-picking transfer boxes 5 are arranged sequentially on the transfer box main beam 701 and transfer box secondary beam 601 according to the corn harvesting header row spacing specifications. Each ear-picking transfer box 5 is equipped with an ear-picking sprocket 503.

[0018] This invention has a simple structure, low cost, and reliable positioning, which improves the reliability and stability of corn harvesting header operations.

Claims

1. A corn harvesting header deployment and positioning device, installed between the main header and the auxiliary header of a foldable header, comprising a positioning plate (1), an alignment plate (2), a secondary beam boundary cutter roller frame (3), a main beam boundary cutter roller frame (4), a picking transfer box (5), a header frame secondary beam (6), and a header frame main beam (7), wherein the main header frame main beam (7) is provided with a forward-extending main beam boundary cutter roller frame (4), and the auxiliary header frame secondary beam (6) is provided with a forward-extending secondary beam boundary cutter roller frame (3), the secondary beam boundary cutter roller frame (3) and the main beam boundary cutter roller frame (4) are arranged opposite each other near the folding position of the main header and the auxiliary header, and both the main beam boundary cutter roller frame (4) and the secondary beam boundary cutter roller frame (3) are provided with a picking transfer box (5); characterized in that: The front end of the secondary beam boundary cutter roller frame (3) is provided with a positioning plate (1), and the front end of the main beam boundary cutter roller frame (4) is provided with a matching plate (2) that matches the positioning plate (1). The positioning plate (1) has a concave groove (105), and the matching plate (2) has a protrusion (205). The protrusion (205) and the concave groove (105) are fitted and matched. The positioning plate (1) and the matching plate (2) are connected to each other to form a docking positioning structure. The concave groove (105) of the positioning plate (1) has groove guide rounded corners (102) on both sides at the entrance of the concave groove (105). The bottom surface (106) of the groove is an inclined surface. The sliding surface (104) on the groove on both sides and the sliding surface (105) of the groove are connected to each other. 03) The groove is arranged in parallel with each other. The angle between the upper sliding surface (104) and the bottom surface (106) of the groove is obtuse, and the angle between the lower sliding surface (103) and the bottom surface (106) of the groove is acute. A positioning plate stress relief groove (101) is provided at the acute angle. The protrusion (205) of the alignment plate (2) includes the upper sliding surface (203), the lower sliding surface (204) and the top surface (206) of the protrusion. The angle formed between the upper sliding surface (203) and the lower sliding surface (204) and the top surface (206) of the protrusion is the protrusion guide fillet (202). Alignment plate stress relief grooves (201) are provided on both sides of the root of the protrusion (205).

2. A corn harvester head deployment positioning device according to claim 1, characterized in that: The protrusion (205) of the positioning plate (1) slides into the concave groove (105) of the alignment plate (2), the sliding surface (203) of the protrusion (205) contacts the sliding surface (104) of the groove of the concave groove (105), and the sliding surface (204) of the protrusion (205) contacts the sliding surface (103) of the groove of the concave groove (105).

3. A corn harvester head deployment positioning device according to claim 1 or 2, characterized in that: The positioning plate (1) and the alignment plate (2) are respectively provided with positioning plate mounting holes (107) and alignment plate mounting holes (207).

4. A corn harvester head deployment positioning device according to claim 3, wherein: The tail end of the main beam boundary cutter roller frame (4) is provided with a right cutter roller frame mounting plate (401), which is connected to the right cutter roller frame mounting base surface (502) on the ear-picking transfer box above it; the tail end of the secondary beam boundary cutter roller frame (3) is provided with a left cutter roller frame mounting plate (301), which is connected to the left cutter roller frame mounting base surface (501) on the ear-picking transfer box above it.

5. A corn harvester head deployment positioning device according to claim 4, wherein: The main beam (7) and the secondary beam (6) of the header frame are respectively provided with a transfer box main beam (701) and a transfer box secondary beam (601). There are multiple ear-picking transfer boxes (5), which are arranged in sequence on the transfer box main beam (701) and the transfer box secondary beam (601) according to the corn harvesting header row spacing specifications.

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