Height-adjustable corn header

Abstract

The application discloses a corn header with adjustable height, the bottom of the header support is provided with a plurality of movable wheels along the width direction, the movable wheels are located below the guide walls, the rear of the header support is provided with a butt joint shaft at least on both sides, the butt joint shaft is used for structural butt joint at the butt joint mechanism of the front part of the main vehicle body of the harvester, the butt joint mechanism comprises a swing shaft and a butt joint frame, the swing shaft is horizontally rotatably installed on the front part of the main vehicle body of the harvester, the butt joint frame is arranged on the swing shaft, the butt joint frame is penetrated by a butt joint hole in the front-rear direction, the butt joint shaft is adapted to pass through the butt joint hole for butt joint, and the butt joint shaft is structurally locked by fasteners after passing out of the butt joint hole; when the header support is driven to travel by the harvester, the header support is lifted to adjust the height when the movable wheels meet ground foreign matters, and the header support and the main vehicle body of the harvester are swing-adjusted relative positions at the swing shaft. The application flexibly adjusts the height of the header support and avoids the collision of the structure.

Description

Technical Field

[0001] This invention relates to an agricultural machinery device, and more specifically to an adjustable-height corn harvester. Background Technology

[0002] In the existing technology, the front header of a small corn harvester is manufactured as an integral part of the overall harvesting vehicle body or installed separately. After installation, the height of the header is fixed, which makes it inconvenient to adjust the height of the cutting mechanism. Due to the different harvesting needs of corn plants, or when driving to transfer in non-field areas, it is necessary to adjust the height of the cutting mechanism and even the entire header to make it more flexible to use, avoid wear and tear on the harvester structure, and ensure good cutting of the bottom of the corn stalk without damaging the corn itself. The applicant's previous invention patent application, patent number 202410546442.X, entitled "Low-damage harvesting header for corn harvester," designed an adjustable header support height and a structure that facilitates the disassembly and assembly of the header support and the main body of the harvester. However, the height of the header support in this structure needs to be pre-adjusted by the user according to the driving ground conditions, and the height of the header support cannot be changed in real time while driving. This means that the user will leave a height margin when adjusting to ensure that the bottom structure of the header is not damaged, which may prevent the cutter from getting as close to the bottom of the corn stalk as possible. The uncut corn stalks cannot be collected for other uses, such as fertilizer or feed. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an adjustable height corn header. Through structural design, the header support can swing relative to the main body of the harvester according to the ground conditions during the movement, thereby changing the height of the header support off the ground, so as to avoid foreign objects and perform orderly corn stalk cutting.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an adjustable-height corn header, comprising a header support, several sets of cutting sections arranged horizontally at the front of the header support, guide walls on both sides of the cutting sections for guiding corn stalks to the corresponding cutting sections, a channel formed above the cutting sections with corn blocking sections on both sides of the channel, an auger horizontally arranged at the end of the channel, a discharge port on the rear side of one end of the auger, several movable wheels arranged along the width direction at the bottom of the header support, the movable wheels being located below each guide wall, and a docking shaft extending rearward at least on both sides of the rear of the header support, the docking shaft being used to mount a harvester. The main body of the harvester is connected to a docking mechanism at the front. The docking mechanism includes a swing shaft and a docking frame. The swing shaft is horizontally and rotatably mounted at the front of the harvester's main body. The docking frame is set on the swing shaft. The docking frame has docking holes that pass through it in the front-rear direction for the docking shaft to pass through for matching. After the docking shaft passes through the docking holes, it is structurally locked by fasteners. When the header support is driven by the harvester, it is rolled by several movable wheels in contact with the ground. When the movable wheels encounter foreign objects on the ground, the header support is raised to adjust its height. The header support and the main body of the harvester swing relative to the swing shaft to adjust their relative positions.

[0005] As an improvement, an annular elastic buffer is installed at the near end of the docking shaft relative to the cutter stand bracket, and a mounting hole is opened through the far end of the docking shaft relative to the cutter stand bracket. When the docking shaft passes through the corresponding docking hole, the elastic buffer abuts against the front of the docking frame. The mounting hole of the far end of the docking shaft passes through the docking hole for fasteners to be installed and abuts against the rear of the docking frame.

[0006] As an improvement, a layer of elastic pad is installed at the rear of the docking frame for the fasteners to contact.

[0007] As an improvement, the insertion end of the mating hole corresponding to the mating shaft is set as an arc-shaped flare to facilitate the insertion of the mating shaft.

[0008] As an improvement, the docking frame includes an upper frame and a lower frame. The upper frame and the lower frame are spliced ​​and fixed together to be installed on the swing shaft. The docking hole is set at the upper frame, and the lower frame is heavier than the upper frame, or a weight is placed on the lower frame. Thus, when the docking frame is not docked to the docking shaft, the lower frame swings downwards by its own weight until the docking hole faces the front-back direction.

[0009] As an improvement, the movable wheels are arranged in two rows below each guide wall. When the header support is driven by the harvester, the two rows of movable wheels contact the ground and roll. When the two rows of movable wheels encounter foreign objects on the ground, the header support is raised to adjust its height.

[0010] As an improvement, the docking shafts are set in three groups (left, center, and right) behind the cutter stand support.

[0011] The beneficial effects of this invention are as follows: Through structural design, while enabling rapid docking between the header support and the main body of the harvester, the header support can flexibly float and adjust its height when encountering uneven ground during travel, preventing the cutting section or the bottom frame from being too low and hitting the ground or foreign objects, thus protecting the structure on the header. Furthermore, compared with traditional structures or other adjustable height structures, its flexible height adjustment design allows the cutting section to be set relatively lower, increasing the cutting efficiency of corn stalks and facilitating the recycling of corn stalks for reuse. Attached Figure Description

[0012] Figure 1 This is a top view of the corn header structure of the present invention.

[0013] Figure 2 This is a side view of the corn header structure of the present invention.

[0014] Figure 3 This is a longitudinal cross-sectional view of the mating joint between the docking shaft and the docking mechanism of the present invention. Detailed Implementation

[0015] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0016] like Figure 1 , 2 Figure 3 shows a specific embodiment of the adjustable height corn header of the present invention. The accompanying drawings only illustrate the mutual cooperation between the structures. The position and size ratio of the specific structures can be reasonably adjusted according to the actual product situation, and do not limit the scope of protection of the present invention.

[0017] The specific embodiment includes a header support 2. Several sets of cutting sections 21 are horizontally arranged at the front of the header support 2. Guide walls 22 are provided on both sides of the cutting sections 21 to guide corn stalks to the corresponding cutting sections 21. A channel is formed above the cutting sections 21, and corn blocking sections 23 are provided on both sides of the channel. An auger 24 is horizontally arranged at the end of the channel. A discharge port 25 is provided on the rear side of one end of the auger 24. Several movable wheels 3 are arranged along the width direction at the bottom of the header support 2. The movable wheels 3 are located below each guide wall 22. A docking shaft 4 is provided at least on both sides of the rear of the header support 2, extending rearward. The docking shaft 4 is used to dock at the docking mechanism 5 at the front of the harvester's main body 1. The structural docking mechanism 5 includes a swing shaft 51 and a docking frame 52. The swing shaft 51 is horizontally and rotatably mounted on the front of the main body 1 of the harvester. The docking frame 52 is set on the swing shaft 51. The docking frame 52 has a docking hole 53 through it in the front-rear direction for the docking shaft 4 to pass through for appropriate docking. After the docking shaft 4 passes through the docking hole 53, it is structurally locked by fasteners. When the header support 2 is driven by the harvester, it is rolled by several movable wheels 3 in contact with the ground. When the movable wheels 3 encounter foreign objects on the ground, the header support 2 is raised to adjust its height. The header support 2 and the main body 1 of the harvester swing relative to the swing shaft 51 to adjust their relative positions.

[0018] In use, the header support 2 is installed at the front of the main body 1 of the harvester. The user drives the corn harvester to the corn plant to be harvested. As the corn harvester moves forward, the corn stalks are gathered from the guide walls 22 on both sides to the cutting part 21. The cutting part 21 consists of a pair of cutting shafts that rotate relative to each other to pull the corn stalks downward and cut them. After the corn cobs on the stalks are cut off, they are blocked by the corn blocking part 23. As the corn is conveyed to the end of the auger 24, the auger 24 then conveys the corn cobs to the discharge port 25 on one side. The discharge port 25 is connected to the inlet of the main body 1 of the harvester, thus orderly conveying the corn to complete the collection.

[0019] As an innovative improvement, several movable wheels 3 are set along the width of the guide wall 22 to effectively support the weight of the header support 2 without affecting the normal entry of the corn stalks into the cutting and conveying channel. As the harvester moves, the header support 2 can be supported to move synchronously.

[0020] The header support 2 is structurally connected to the harvester main body 1 via several docking shafts 4 mounted on a docking mechanism 5 at the front. The assembly and disassembly process is simple, facilitating easy connection and separation between the header support 2 and the harvester main body 1. The structural design ensures that the docking shafts 4 are at the same height as the docking mechanism 5 when horizontal. During connection, the user guides the header support 2 towards the harvester main body 1, aligning each docking shaft 4 with the docking hole 53 of the docking frame 52. The shaft 4 is then inserted into the corresponding hole 53 and exits from the rear. Once in place, fasteners secure the shaft 4 and docking frame 52, completing the structural installation and positioning. Multi-position docking locking ensures structural stability and strength between the header support 2 and the harvester main body 1. Disassembly is simple: removing the fasteners and pushing the header support 2 away completes the connection with the harvester main body 1, making it very labor-saving and convenient. After docking and locking, it can be used. When the header support 2 travels and encounters uneven ground or foreign objects, the header support 2 will be lifted due to the foreign objects. The upward swing of the swing shaft 51 at the docking point achieves the upward state of the header support 2. After passing the foreign objects, the swing shaft 51 swings down to reset. Through the design of the above structure, the header support 2 can be effectively raised according to the ground conditions, so that the cutting part 21 or the bottom frame part will not be bumped when passing foreign objects after being raised, thus effectively protecting the cutting part or the bottom frame part. The structure of this invention is more flexible than other height-adjustable structures. The height can be adjusted during travel, making it more flexible to use. Compared with other height-adjustable structures, the cutting part 21 or the bottom frame part can be set lower, allowing the cutting part 21 to cut corn stalks more thoroughly, and allowing more space for the bottom frame part to accommodate components.

[0021] As an improved specific implementation, the docking shaft 4 is equipped with an annular elastic buffer platform 41 at the near end relative to the cutting table support 2, and a mounting hole 42 is provided at the far end relative to the cutting table support 2. When the docking shaft 4 passes through the docking hole 53, the elastic buffer platform 41 abuts against the front of the docking frame 52. The far end of the docking shaft 4 passes through the mounting hole 42 of the docking hole 53 for fasteners to be installed and abuts against the rear of the docking frame 52.

[0022] like Figure 3 As shown, in specific implementation, when the docking shaft 4 passes through the docking hole 53 and is in place, the elastic buffer platform 41 abuts against the front of the docking frame 52. Through the compression deformation of the elastic buffer platform 41, the mounting hole 42 is moved further away from the rear of the docking frame 52. Then, the fasteners are installed. The fasteners here can be bolts and nuts with sufficient structural strength, which are installed at the mounting hole 42 to form a longitudinal through structure. Then, the compression of the elastic buffer platform 41 is released. After the elastic buffer platform 41 restores its structure, the docking frame 52 abuts against the rear fasteners, thereby forming a firm structural lock and having a good buffer structure.

[0023] As an improved specific implementation, the rear of the docking frame 52 is fitted with an elastic pad 54 for fasteners to abut against.

[0024] like Figure 3 As shown, as a further optimization of the buffer structure, an elastic pad 54 is provided at the rear of the docking frame 52 to engage with the fasteners. Thus, the front and rear of the docking frame 52 are buffered by the elastic buffer platform 41 and the elastic pad 54, respectively. When the header support 2 and the main body of the harvester 1 are moving, the structure can be effectively dampened, reducing the structural impact between the docking shaft 4 and the docking mechanism 5. This extends the service life of the mechanism while ensuring that the structure is locked firmly.

[0025] As an improved specific implementation, the insertion end of the docking hole 53 corresponding to the docking shaft 4 is set as an arc-shaped flared opening 531 to facilitate the insertion of the docking shaft 4.

[0026] like Figure 3 As shown, as a structural optimization during installation, the arc-shaped flared opening 531 makes it easier for the docking shaft 4 to be inserted into the docking hole 53. With continuous insertion, the docking shaft 4 passes through the docking hole 53, and a relatively stable docking structure is formed under the matching dimensions of the docking shaft 4 and the docking hole 53.

[0027] As an improved specific implementation, the docking frame 52 includes an upper frame 521 and a lower frame 522. The upper frame 521 and the lower frame 522 are spliced ​​and fixed to each other and thus installed on the swing shaft 51. The docking hole 53 is provided at the upper frame 521, and the lower frame 522 is heavier than the upper frame 521, or a heavy object is placed on the lower frame 522. Thus, when the docking frame 52 is not docked with the docking shaft 4, the lower frame 522 swings downward by its own weight until the docking hole 53 faces the front-back direction.

[0028] like Figure 3As shown, in the structural design of the docking frame 52, it is designed to be formed by splicing together an upper frame 521 and a lower frame 522. The docking hole 53 is opened separately on the upper frame 521. The splicing groove structure that cooperates with the swing shaft 51 is processed on the upper frame 521 and the lower frame 522 respectively, which facilitates separate manufacturing. By splicing the upper frame 521 and the lower frame 522 and installing them on the swing shaft 51 with fasteners, the stability and replaceability of the overall structure can be guaranteed, which is convenient for later maintenance and replacement. On the other hand, since the docking mechanism 5 is set in multiple positions and the docking shaft 4 needs to be inserted horizontally, the lower frame 522 is designed to be heavier than the upper frame 521. In specific implementation, the lower frame 522 can be made of heavier metal or a heavy object can be placed on it so that when the docking frame 52 is not inserted with the docking shaft 4, the lower frame 522 swings downwards by its own weight until the docking hole 53 faces the front and back direction. In this state, it is much more convenient for the docking shafts 4 at multiple positions on the cutting table bracket 2 to be smoothly inserted into the docking hole 53 after being aligned with the docking mechanism 5, which greatly improves the assembly efficiency and reduces the maintenance difficulty for users.

[0029] As an improved specific implementation, the movable wheels 3 are arranged in two rows below each guide wall 22. When the header support 2 is driven by the harvester, the two rows of movable wheels 3 roll in contact with the ground. When the two rows of movable wheels 3 encounter foreign objects on the ground, the header support 2 is raised to adjust its height.

[0030] like Figure 1 , 2 As shown, as an optimization, two rows of movable wheels 3 are set at the front and rear. The front and rear wheels can provide more stable ground support, and the header support 2 will not easily rise and fall during movement. Only when the front wheel encounters a significant foreign object causing the header support 2 to rise will the rear wheel be lifted off the ground, meaning the entire header support 2 is lifted. After the front wheel passes the foreign object, the rear wheel will pass the foreign object again, thus lifting the header support 2 again. This ensures that both the cutting structure and the support structure at the front and rear positions can pass the foreign object after being lifted, avoiding damage from impacts. When selecting the width of the movable wheels 3, the wider the movable wheels 3 can be, without affecting normal movement or the conveying of corn stalks, to cover a larger contact area with the ground. While ensuring stable movement, a larger coverage area ensures that foreign objects can be pressed down and the height adjusted.

[0031] As an improved specific implementation, the docking shaft 4 is set in three groups (left, center, and right) behind the cutting table support 2.

[0032] like Figure 1As shown, preferably, the docking shaft 4 and the docking mechanism 5 can be set into three groups: left, middle and right. The structural docking at these three points can ensure that the connection between the header support 2 and the main body of the harvester 1 is firm and stable, providing good structural strength.

[0033] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A height-adjustable corn header, comprising a header support (2), wherein a plurality of cutting sections (21) are horizontally arranged at the front of the header support (2), and guide walls (22) are provided on both sides of the cutting sections (21) for guiding corn stalks to the corresponding cutting sections (21), a channel is formed at the upper part of the cutting sections (21) and corn blocking sections (23) are provided on both sides of the channel, and an auger (24) is horizontally provided at the end of the channel, and a discharge port (25) is provided at the rear side of one end of the auger (24), characterized in that: The bottom of the header support (2) is provided with several movable wheels (3) along the width direction. The movable wheels (3) are located below each guide wall (22). At least on both sides, a docking shaft (4) is provided at the rear of the header support (2). The docking shaft (4) is used for structural docking at the docking mechanism (5) at the front of the harvester main body (1). The docking mechanism (5) includes a swing shaft (51) and a docking frame (52). The swing shaft (51) is horizontally rotatably installed at the front of the harvester main body (1). The docking frame (52) is provided with... On the swing shaft (51), the docking frame (52) has a docking hole (53) through which the docking shaft (4) passes for appropriate docking. After the docking shaft (4) passes through the docking hole (53) in the rearward direction, it is structurally locked by fasteners. When the header support (2) is driven by the harvester, it is rolled by several movable wheels (3) in contact with the ground. When the movable wheels (3) encounter foreign objects on the ground, the header support (2) is raised to adjust the height. The header support (2) and the main body of the harvester (1) swing relative to the swing shaft (51) to adjust their relative positions. The docking frame (52) includes an upper frame (521) and a lower frame (522). The upper frame (521) and the lower frame (522) are spliced ​​and fixed to each other and installed on the swing shaft (51). The docking hole (53) is set at the upper frame (521). The lower frame (522) is heavier than the upper frame (521), or a heavy object is placed on the lower frame (522). Thus, when the docking frame (52) is not docked with the docking shaft (4), the lower frame (522) swings downwards by its own weight until the docking hole (53) faces the front and back direction.

2. The adjustable height corn header according to claim 1, characterized in that: The docking shaft (4) has an annular elastic buffer platform (41) installed at the near end of the cutting table support (2) and a mounting hole (42) through it at the far end of the cutting table support (2). When the docking shaft (4) passes through the docking hole (53) in place, the elastic buffer platform (41) abuts against the front of the docking frame (52). The far end of the docking shaft (4) passes through the mounting hole (42) of the docking hole (53) for fasteners to be installed and abuts against the rear of the docking frame (52).

3. The adjustable height corn header according to claim 2, characterized in that: The rear of the docking frame (52) is fitted with an elastic pad (54) for fasteners to abut against.

4. The adjustable height corn header according to claim 2, characterized in that: The insertion end of the docking hole (53) corresponding to the docking shaft (4) is configured as an arc-shaped flared opening (531) to facilitate the insertion of the docking shaft (4).

5. A height-adjustable corn header according to claim 1, 2, 3, or 4, characterized in that: The movable wheels (3) are arranged in two rows below each guide wall (22). When the header support (2) is driven by the harvester, the two rows of movable wheels (3) contact the ground and roll. When the two rows of movable wheels (3) encounter foreign objects on the ground, the header support (2) is raised to adjust its height.

6. A height-adjustable corn header according to claim 1, 2, 3, or 4, characterized in that: The docking shaft (4) is set in three groups (left, middle, and right) behind the cutting table support (2).

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