Height-adjustable corn header

Abstract

The height-adjustable corn header is characterized in that a plurality of movable wheels are arranged at the bottom of a header support in the width direction, the movable wheels are located below all guide walls, and butt joint shafts are arranged on at least two sides of the rear portion of the header support in a backward extending mode; the butt-joint shaft is used for being arranged at a butt-joint mechanism on the front portion of a harvester main vehicle body for structural butt joint, the butt-joint mechanism comprises a swing shaft and a butt-joint frame, the swing shaft is horizontally and rotatably installed on the front portion of the harvester main vehicle body, the butt-joint frame is arranged on the swing shaft, and a butt-joint hole allowing the butt-joint shaft to penetrate through for adaptive butt joint is formed in the butt-joint frame in the front-back direction in a penetrating mode. The butt joint shaft is structurally locked through a fastener after backwards penetrating out of the butt joint hole; when the header support is driven by the harvester to advance for use, the header support is lifted to adjust the height when the movable wheels meet foreign matters on the ground, and the header support and the harvester main vehicle body swing relative to the swing shaft to adjust the relative position. The height of the header support is flexibly adjusted, and collision of the structure is avoided.

Description

Technical Field

[0001] The invention relates to agricultural mechanical equipment, in particular to a corn cutting platform with adjustable height. Background Art

[0002] In the prior art, the front cutting table of a small corn harvester is manufactured as an integral part or installed separately from the overall harvesting vehicle body. After installation, the height position of the cutting table is fixed, which makes it inconvenient to adjust the height of the cutting mechanism. Due to the need to harvest different corn plants, or when driving and transferring in non-field areas, the cutting mechanism and even the entire cutting table need to be adjusted to a certain height position, which makes it more convenient to use flexibly, avoids the use loss of the harvester structure, and ensures good cutting of the bottom of the corn stalks without damaging the corn itself. The invention patent previously applied for by the applicant, patent number 202410546442.X, is named "Corn Harvester Low-Loss Harvesting Header". It is designed with an adjustable header bracket height and a structure that facilitates the disassembly and assembly of the header bracket and the main body of the harvester. However, the header bracket height of this structure requires the user to pre-adjust it according to the driving ground conditions, and the header bracket height cannot be changed in real time while driving. This requires the user to leave a height margin when adjusting to ensure that the bottom structure of the header is not damaged, and may not be able to cut as close to the bottom of the corn stalks as possible, and 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 prior art, the purpose of the present invention is to provide a corn cutting platform with adjustable height. Through structural design, the cutting platform bracket can swing relative to the main body of the harvester according to the ground conditions while moving, thereby changing the height of the cutting platform bracket from the ground, thereby avoiding foreign objects and carrying out orderly cutting of corn stalks.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a corn cutting platform with adjustable height, comprising a cutting platform bracket, a plurality of cutting parts are horizontally arranged at the front of the cutting platform bracket, guide walls for guiding the corn stalks to the corresponding cutting parts are arranged on both sides of the cutting parts, a channel is formed on the upper part of the cutting part and corn blocking parts are arranged on both sides of the channel, an auger is horizontally arranged at the end of the channel, a discharge port is arranged at the rear side of one end of the auger, a plurality of movable wheels are arranged along the width direction at the bottom of the cutting platform bracket, the movable wheels are located below each guide wall, and a docking shaft is arranged at least on both sides of the rear of the cutting platform bracket, and the docking shaft is used to be placed on a harvester Structural docking is performed at the docking mechanism at the front of the main body of the harvester, and the docking mechanism includes a swing shaft and a docking frame. The swing shaft is horizontally rotatably installed at the front of the main body of the harvester, and the docking frame is arranged on the swing shaft. The docking frame is penetrated by docking holes in the front-to-back direction for the docking shaft to pass through for adaptive docking. After the docking shaft passes through the docking hole backward, the structure is locked by fasteners; when the harvester is driven to move in use, a number of movable wheels contact the ground for rolling, and when the movable wheels encounter foreign objects on the ground, the harvester bracket is lifted for debugging height, and the harvester bracket and the main body of the harvester are swung relative to the swing shaft to adjust their relative positions.

[0005] As an improvement, an annular elastic buffer table is installed at the proximal end of the docking shaft relative to the cutting table bracket, and a mounting hole is penetrated through the distal end relative to the cutting table bracket. When the docking shaft passes through the corresponding docking hole and is in place, the elastic buffer table abuts against the front of the docking frame, and the distal end of the docking shaft passes through the mounting hole of 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 for the fastener to resist is installed at the rear of the docking frame.

[0007] As an improvement, the insertion end of the docking hole corresponding to the docking shaft is configured as an arc expansion to facilitate the insertion of the docking shaft.

[0008] As an improvement, the docking frame includes an upper frame body and a lower frame body, which are spliced ​​and fixed to each other and thus installed on a swing shaft. The docking hole is arranged on the upper frame body, and the mass of the lower frame body is heavier than that of the upper frame body, or a heavy object is arranged on the lower frame body, so that when the docking frame is not docked with the docking shaft, the lower frame body relies on its own weight to swing downward until the docking hole faces the front and rear direction.

[0009] As an improvement, movable wheels are arranged in two corresponding front and rear rows under each guide wall. When the cutting platform bracket is driven by the harvester for use, the front and rear rows of movable wheels contact the ground for rolling, and when the front and rear rows of movable wheels encounter foreign objects on the ground successively, the cutting platform bracket is lifted and adjusted to a higher height.

[0010] As an improvement, the docking shafts are arranged in three groups of left, middle and right at the rear of the header bracket.

[0011] The beneficial effects of the present invention are as follows: through the structural design, while realizing the rapid docking of the cutting table bracket with the main body of the harvester, the cutting table bracket can be flexibly floated and lifted upward to adjust the height when encountering uneven ground during travel, thereby preventing the cutting part or the bottom frame part from touching the ground or foreign objects too low, thereby protecting the structure on the cutting table; and its flexible height adjustment design, compared with traditional structures or other adjustable height structures, can set the cutting part relatively lower, thereby improving the cutting efficiency of the corn stalks, and facilitating the recovery of the corn stalks for utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The figure is a schematic diagram of the top view of the corn cutting platform of the present invention.

[0013] Figure 2 It is a schematic diagram of the structure of the corn cutting platform of the present invention when viewed from the side.

[0014] Figure 3 It is a schematic diagram of the longitudinal cross-sectional structure of the docking shaft and the docking mechanism matching portion of the present invention. DETAILED DESCRIPTION

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

[0016] like Figure 1 , 2 , 3 are specific embodiments of the corn cutting table with adjustable height of the present invention. The drawings only express the mutual coordination relationship between the structures. The positions and size ratios of the specific structures can be reasonably adjusted according to the actual product conditions, and do not limit the scope of protection of the present invention.

[0017] The specific embodiment includes a header bracket 2, a plurality of cutting parts 21 are horizontally arranged at the front of the header bracket 2, guide walls 22 for guiding corn stalks to correspond to the cutting parts 21 are arranged on both sides of the cutting parts 21, a channel is formed on the upper part of the cutting part 21 and corn blocking parts 23 are arranged on both sides of the channel, an auger 24 is horizontally arranged at the end of the channel, a discharge port 25 is arranged at the rear side of one end of the auger 24, a plurality of movable wheels 3 are arranged at the bottom of the header bracket 2 along the width direction, the movable wheels 3 are located below each guide wall 22, and a docking shaft 4 is extended backward at least on both sides of the rear of the header bracket 2, and the docking shaft 4 is used to be placed at the docking mechanism 5 at the front of the harvester main body 1 for docking. The docking structure 5 includes a swing shaft 51 and a docking frame 52. The swing shaft 51 is horizontally rotatably installed on the front part of the main body 1 of the harvester. The docking frame 52 is arranged on the swing shaft 51. The docking frame 52 is penetrated with a docking hole 53 in the front-to-back direction for the docking shaft 4 to pass through for adaptive docking. The docking shaft 4 is structurally locked by fasteners after passing through the docking hole 53 backwards. When the harvester drives the harvester to move, the harvester bracket 2 is rolled in contact with the ground by a number of movable wheels 3, and the height of the harvester bracket 2 is lifted when the movable wheels 3 encounter foreign objects on the ground. The harvester bracket 2 and the main body 1 of the harvester are swung relative to the swing shaft 51 to adjust the relative position.

[0018] When the present invention is in use, the header bracket 2 is installed on the front part of the harvester main body 1, and the user drives the corn harvester to correspond to the corn plants to be harvested. As the corn harvester moves forward, the corn stalks are gathered to the middle by the guide walls 22 on both sides to the cutting part 21. The cutting part 21 is a pair of cutting shafts, which rotate relative to each other to pull the corn stalks downward and cut them. The corn cobs on the stalks are cut off and blocked by the corn blocking part 23. As the conveyor reaches the auger 24 at the end, the auger 24 then conveys the corn cobs to the discharge port 25 on one side, and the discharge port 25 is connected to the feed port of the harvester main body 1, so that the corn is transported in an orderly manner to complete the collection.

[0019] As an innovative improvement, firstly, by setting a number of movable wheels 3 along the guide wall 22 corresponding to the width, the weight of the header bracket 2 can be effectively supported without affecting the normal entry of the corn stalks into the cutting and conveying channels, and the header bracket 2 can be supported to move synchronously with the movement of the harvester.

[0020] The header bracket 2 is installed to the docking mechanism 5 at the front of the harvester main body 1 by means of a plurality of docking shafts 4 to achieve structural docking. The disassembly and assembly method is simple, which is convenient for the user to dock and split the header bracket 2 with the harvester main body 1. The structural design makes the docking shaft 4 consistent with the height of the docking mechanism 5 when horizontal. When docking, the user holds the header bracket 2 and pushes it toward the harvester main body 1, and corresponds each docking shaft 4 to the docking mechanism 5, specifically the docking hole 53 of the docking frame 52, so that the docking shaft 4 is correspondingly inserted into the docking hole 53 and passed out from the rear end. After the docking shaft 4 is inserted in place, the docking shaft 4 and the docking frame 52 are fastened to complete the structural installation and positioning. The multi-position docking locking ensures the structural stability and strength between the header bracket 2 and the harvester main body 1. When splitting, the fasteners are removed and the header bracket 2 is pushed away to complete the docking with the harvester main body 1, which is very labor-saving and convenient. It can be used after being docked and locked. When the header bracket 2 is moving and encounters the ups and downs of the ground or the presence of foreign objects, the header bracket 2 will be lifted due to the foreign objects, and the upward swing of the swing shaft 51 at the docking point realizes the rising state of the header bracket 2, and the swing shaft 51 swings down again after passing the foreign objects. Through the design of the above structure, the header bracket 2 can be effectively lifted according to the ground conditions, so that the cutting part 21 or the bottom frame part will not be bumped after being lifted and passing foreign objects, which effectively protects the cutting part or the bottom frame part. The structure of the present invention is more flexible than other adjustable height structures, and the height can be adjusted during driving, which is more flexible to use. Compared with other adjustable height structures, the cutting part 21 or the bottom frame part can be set lower, so that the cutting part 21 can cut the corn stalks more fully, and the bottom frame part can have a more sufficient volume to set the components.

[0021] As an improved specific implementation method, an annular elastic buffer platform 41 is installed at the proximal end of the docking shaft 4 relative to the cutting table bracket 2, and a mounting hole 42 is penetrated through the distal end relative to the cutting table bracket 2. When the docking shaft 4 passes through the corresponding docking hole 53 and is in place, the elastic buffer platform 41 abuts against the front of the docking frame 52, and the distal 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 a 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, and through the extrusion deformation of the elastic buffer platform 41, the mounting hole 42 is further away from the rear of the docking frame 52, and then the fastener is installed. The fastener here can be installed at the mounting hole 42 using bolts and nuts with sufficient structural strength to form a longitudinally penetrated structure, and then the extrusion of the elastic buffer platform 41 is released. After the elastic buffer platform 41 restores its structure, the docking frame 52 abuts against the fastener at the rear, thereby forming a firm structural lock with a better buffer structure.

[0023] As an improved specific implementation, a layer of elastic pad 54 for fasteners to resist is installed at the rear of the docking frame 52.

[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 cooperate with the fastener, so that the front and rear of the docking frame 52 are respectively buffered by the elastic buffer platform 41 and the elastic pad 54, which can effectively cushion the structure when the cutting table bracket 2 and the harvester main body 1 are traveling, reducing the structural impact between the docking shaft 4 and the docking mechanism 5, thereby extending the service life of the mechanism while ensuring that the structure is firmly locked.

[0025] As an improved specific implementation manner, the insertion end of the docking hole 53 corresponding to the docking shaft 4 is configured as an arc expansion opening 531 for facilitating the insertion of the docking shaft 4 .

[0026] like Figure 3 As shown, as a structural optimization during installation, the arc expansion 531 is provided to facilitate the insertion of the docking shaft 4 into the docking hole 53, and with continued insertion, the docking shaft 4 passes through the docking hole 53 and forms a relatively stable docking structure with the docking shaft 4 and the docking hole 53 being of matching sizes.

[0027] As an improved specific implementation method, the docking frame 52 includes an upper frame body 521 and a lower frame body 522, and the upper frame body 521 and the lower frame body 522 are spliced ​​and fixed to each other so as to be installed on the swing shaft 51, and the docking hole 53 is arranged at the upper frame body 521, and the mass of the lower frame body 522 is heavier than that of the upper frame body 521, or a heavy object is arranged on the lower frame body 522, so that when the docking frame 52 is not docked with the docking shaft 4, the lower frame body 522 relies on its own weight to swing downward until the docking hole 53 faces the front and rear direction.

[0028] like Figure 3As shown, when designing the structure of the docking frame 52, it is designed to be spliced ​​into an upper frame body 521 and a lower frame body 522, and the docking hole 53 is opened separately on the upper frame body 521, and the splicing groove structure cooperating with the swing shaft 51 is processed on the upper frame body 521 and the lower frame body 522 respectively, which is convenient for separate manufacturing; by splicing the upper frame body 521 and the lower frame body 522 and installing them on the swing shaft 51 through 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 at multiple positions and the docking shaft 4 needs to be passed through horizontally, the lower frame 522 is further designed to be heavier than the upper frame 521. In specific implementation, the lower frame 522 can be made of heavier metal, or heavy objects can be configured so that when the docking frame 52 is not passed through the docking shaft 4, the lower frame 522 can swing downward under its own weight until the docking hole 53 faces the front and rear direction. In this state, it can greatly facilitate the docking shafts 4 at multiple positions on the cutting platform bracket 2 to be smoothly inserted into the docking hole 53 after being aligned with the docking mechanism 5, thereby greatly improving the assembly efficiency and reducing the maintenance difficulty for users.

[0029] As an improved specific implementation method, the movable wheels 3 are arranged in two corresponding front and rear rows below each guide wall 22. When the harvester is driven to move in use, the front and rear rows of movable wheels 3 contact the ground for rolling, and when the front and rear rows of movable wheels 3 successively encounter foreign objects on the ground, the harvester bracket 2 is lifted and adjusted to a higher height.

[0030] like Figure 1 , 2 As shown, as an optimization, two rows of movable wheels 3 are set in the front and rear, and the front and rear wheels can provide more stable ground support. The header bracket 2 will not easily rise and fall during travel. When the front wheel encounters an obvious foreign object that causes the header bracket 2 to be lifted, the rear wheel is ordered to leave the ground, that is, the header bracket 2 is lifted as a whole; and after the front wheel passes the foreign object, the rear wheel will pass the foreign object again, and then lift the header bracket 2 again, ensuring that the cutting structure and bracket structure at the front and rear positions can pass the foreign object after lifting to avoid being bumped and damaged. When selecting the width of the movable wheel 3, the movable wheel 3 can be set as wide as possible without affecting the normal travel and the transportation of corn stalks, so as to cover a larger contact ground area. Under the premise of ensuring stable travel, a larger area can be covered to ensure that when there is a foreign object, it can be pressed and the height can be adjusted.

[0031] As an improved specific implementation manner, the docking shafts 4 are arranged at the rear of the header bracket 2 into three groups: left, middle and right.

[0032] like Figure 1As shown, as a preference, the docking shaft 4 and the docking mechanism 5 can be arranged into three groups, left, middle and right. The structural docking at these three locations can ensure that the connection between the header bracket 2 and the harvester main body 1 is firm and stable, providing good structural strength.

[0033] The above are only preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A corn cutting platform with adjustable height, comprising a cutting platform support (2), a plurality of cutting parts (21) are arranged horizontally at the front of the cutting platform support (2), guide walls (22) are arranged on both sides of the cutting parts (21) for guiding corn stalks to correspond to the cutting parts (21), a channel is formed on the upper part of the cutting parts (21) and corn blocking parts (23) are arranged on both sides of the channel, an auger (24) is arranged horizontally at the end of the channel, and a discharge port (25) is arranged at the rear side of one end of the auger (24), characterized in that: The bottom of the harvester support (2) is provided with a plurality of movable wheels (3) along the width direction, and 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 harvester support (2) and extends backwards. The docking shaft (4) is used to be placed at a docking mechanism (5) at the front of the harvester main body (1) for structural docking. 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), and the docking frame (52) is provided. On the swing shaft (51), the docking frame (52) is penetrated with a docking hole (53) in the front-to-back direction for the docking shaft (4) to pass through for matching docking, and the docking shaft (4) is structurally locked by a fastener after passing through the docking hole (53) backwards; when the harvester is driven to move forward, the plurality of movable wheels (3) contact the ground to roll, and when the movable wheels (3) encounter foreign objects on the ground, the harvester bracket (2) is lifted to adjust the height, and the harvester bracket (2) and the harvester main body (1) swing relative to the swing shaft (51) to adjust the relative position.

2. The height-adjustable corn header according to claim 1, characterized in that: The docking shaft (4) is provided with an annular elastic buffer platform (41) at the proximal end relative to the header bracket (2), and a mounting hole (42) is provided through the distal end relative to the header bracket (2). When the docking shaft (4) passes through the corresponding docking hole (53) and is in place, the elastic buffer platform (41) abuts against the front of the docking frame (52), and the distal end of the docking shaft (4) passes through the mounting hole (42) of the docking hole (53) for fastener installation and abuts against the rear of the docking frame (52).

3. The height-adjustable corn header according to claim 2, characterized in that: A layer of elastic pad (54) for the fastener to resist is installed at the rear of the docking frame (52).

4. The height-adjustable corn cutting platform according to claim 2, characterized in that: The insertion end of the docking hole (53) corresponding to the docking shaft (4) is arranged as an arc expansion opening (531) for facilitating the insertion of the docking shaft (4).

5. A corn cutting platform with adjustable height according to claim 1, 2, 3 or 4, characterized in that: The docking frame (52) comprises an upper frame body (521) and a lower frame body (522), wherein the upper frame body (521) and the lower frame body (522) are spliced ​​and fixed to each other so as to be installed on the swing shaft (51), and the docking hole (53) is arranged at the upper frame body (521), and the mass of the lower frame body (522) is heavier than that of the upper frame body (521), or a heavy object is arranged on the lower frame body (522), so that when the docking frame (52) is not docked with the docking shaft (4), the lower frame body (522) swings downward by its own weight until the docking hole (53) faces the front-rear direction.

6. A corn cutting platform with adjustable height according to claim 1, 2, 3 or 4, characterized in that: The movable wheels (3) are arranged in two corresponding front and rear rows below each guide wall (22). When the harvester drives the cutting platform support (2) to move forward, the front and rear rows of movable wheels (3) contact the ground to roll, and when the front and rear rows of movable wheels (3) successively encounter foreign objects on the ground, the cutting platform support (2) is lifted to adjust the height.

7. A corn cutting platform with adjustable height according to claim 1, 2, 3 or 4, characterized in that: The docking shafts (4) are arranged in three groups, namely, left, middle and right, behind the header bracket (2).

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