Self-propelled corn harvester

Abstract

The invention relates to the field of agricultural machinery, in particular to a self-propelled corn harvester which comprises a crawler trolley, a portal frame arranged above the crawler trolley, a clamping mechanism fixed to the portal frame and a picking roller, and the clamping mechanism comprises a main beam inclining downwards from the tail to the head and a dividing assembly protruding out of the portal frame. The picking roller is connected to the tail part of the main beam and forms a lateral extrusion space with the clamping mechanism; the technical problems that a corn harvester is difficult to adapt to complex terrains, occupies too large space and cannot flexibly steer, energy consumption in the picking process is large, extrusion damage to corncobs in the picking process is large, and the quality of the corncobs is poor are solved. The flexible adaptive capacity and the use stability of automation in complex terrains are enhanced; the occupied space of the corn harvester is reduced, and flexible steering of the corn harvester is facilitated; extra power input is not needed in picking, energy consumption in the picking process is reduced, picking is more labor-saving, and the picking quality of the corncobs is improved.

Description

Technical Field

[0001] The present invention relates to the field of agricultural machinery, and more specifically, to a self-propelled corn harvester. Background Art

[0002] Corn is one of the main grains in my country, and its output has ranked first among the three major grains in recent years. Now, with the continuous improvement of people's quality of life, the demand for fresh corn with higher nutritional content and better taste is also increasing.

[0003] However, at present, the main areas for growing fresh corn in my country are concentrated in southern regions such as Yunnan and Guangdong. Due to the diverse terrain and complex topography in the south, most of the corn-growing areas are scattered, and large corn harvesters are difficult to operate on the ground, making it impossible for most agricultural machinery on the market to match its agronomy.

[0004] In addition to the problem that the above-mentioned corn harvester is difficult to adapt to the complex terrain environment of scattered small plots, the existing corn harvester occupies too much space and cannot be flexibly turned, which becomes a new defect; at the same time, in the process of picking corn, the picking roller requires additional input power. Furthermore, when picking corn ears, the corn ears are subjected to a bottom-up pulling force to break the stalks, causing serious squeezing damage to the corn ears and poor quality of the harvested corn ears; the above-mentioned defects are problems that need to be urgently solved in this field. Summary of the invention

[0005] The present invention aims to overcome at least one defect (shortcoming) of the above-mentioned prior art and provide a self-propelled corn harvester to solve the technical problems that the corn harvester is difficult to adapt to complex terrain, occupies too much space and cannot be flexibly turned, the picking process consumes a lot of energy, the picking process causes great squeezing damage to corn cobs, and the quality of corn cobs is poor.

[0006] The technical solution adopted by the present invention is a self-propelled corn harvester, which includes a crawler trolley, a gantry arranged above the crawler trolley, a clamping mechanism and a picking roller fixed on the gantry, the clamping mechanism includes a main beam inclined downward from the tail to the front and a straw dividing assembly protruding from the gantry, and the picking roller is connected to the tail of the main beam and forms a lateral extrusion space with the clamping mechanism.

[0007] It is beneficial to strengthen the traction and grip of the corn harvester through the crawler trolley, so as to enhance its automatic and flexible adaptability in complex terrain and enhance the stability of the corn harvester; it is beneficial to compactly arrange multiple components on the harvester through the gantry, reduce the space occupied by the corn harvester and facilitate its flexible steering; it is beneficial to change the connection space between the clamping mechanism and the picking roller and the force direction when squeezing the corn cobs through the inclined main beam; it is beneficial to make the picking of corn cobs without additional power input through the lateral squeezing space, and at the same time the lateral pulling force makes picking more labor-saving and the corn cobs are less damaged by squeezing.

[0008] Furthermore, the clamping mechanism includes two groups, each group of clamping mechanisms includes two main beams, the main beams are connected to the gantry through a square tube frame, the picking roller includes two symmetrical spiral double-roller structures, the first gap between the two main beams is aligned with the second gap between the two symmetrical spiral double-roller structures, and the connection between the first gap and the second gap forms a lateral extrusion space.

[0009] It is beneficial to clamp two rows of corn stalks simultaneously by two sets of clamping mechanisms; it is beneficial for the corn stalks to be transported to the second slit through the first slit and to be subjected to lateral force in the lateral extrusion space, which is more labor-saving and less damaging to the corn ears than the traditional bottom-up pulling force to break the stalks; it is beneficial to avoid the breakage and blockage of the corn stalks during the transmission process by aligning the first slit and the second slit, thereby reducing the corn picking efficiency.

[0010] Furthermore, the symmetrical spiral double-roller structure includes a first spiral roller and a second spiral roller, and the convex strips on the first spiral roller, the convex strips on the second spiral roller and the second gap form a V-shaped extrusion space.

[0011] The first spiral roller and the second spiral roller are arranged in parallel to form a symmetrical squeezing space, that is, a V-shaped squeezing space, so that the picking of corn stalks in the picking roller is more labor-saving.

[0012] Furthermore, each set of clamping mechanisms also includes a clamping hand wheel protruding from the main beam, and there is a gap between the two sets of parallel clamping mechanisms. A guide is provided at the head of the gap, and the straw separating assembly includes a straw separating belt. The clamping hand wheel and the guide form two clamping openings symmetrically arranged along the gap with the straw separating belt respectively, and the opening of the clamping opening gradually narrows to the first gap.

[0013] The invention is beneficial to providing a falling space for the corn cobs picked by the picking rollers through the gap; it is beneficial to push away the extra leaves in the corn field through the straw-separating component, restrict the corn stalks in the clamping mouth through the guide, and then drive the corn stalks into the first gap through the straw-separating belt, and support and drive the straw-separating belt through the clamping hand wheel, so that the upper end of the corn stalks straightened by the straw-separating component to the clamping hand wheel is clamped; the corn stalks are quickly arranged into a neat and single state during the clamping process by gradually narrowing the opening of the clamping mouth, so as to avoid the corn cobs being blocked when reaching the picking rollers and affecting the picking efficiency.

[0014] Furthermore, the straw separating assembly also includes a tensioning wheel, a fixed wheel and a driving wheel motor arranged in the main beam, and the driving wheel motor drives the straw separating belt to move on the tensioning wheel and the fixed wheel. The tensioning wheel and the fixed wheel are staggered in the main beam, and the ratio of the number of the tensioning wheel to the fixed wheel is 2:1.

[0015] It is beneficial to adjust the tightness of the straw-separating belt through the tensioning wheel and the fixed wheel, realize the transmission of the straw-separating belt through the driving wheel motor, and make the clamping of the straw-separating belt more compact through the staggered arrangement and ratio parameter values ​​of the tensioning wheel and the fixed wheel, thereby preventing the corn stalks from slipping.

[0016] Furthermore, it also includes a cutting knife, the gantry includes a multi-hole position adjusting square tube, the cutting knife is arranged between the crawler trolley and the gantry through a profiling component, and the cutting knife is adjusted in height on the gantry through the multi-hole position adjusting square tube.

[0017] When the clamping hand wheel clamps the upper end of the corn stalk, the bottom end of the corn stalk is cut off by the contour cutter, so that the corn plant is transported to the first gap along the rotation of the clamping hand wheel; it is beneficial to realize the height adjustment of the cutting position of the corn stalk by the contour cutter through the multi-porous position adjustment square tube to adapt to the cutting of corn plants under different terrains.

[0018] Furthermore, the cutter includes a driven walking wheel, a disc cutter and a cutter drive motor. The driven walking wheel is arranged on both sides of the crawler vehicle through a multi-hole position adjustment square tube. The driven walking wheels on both sides each include two, and the disc cutter protrudes from the gantry.

[0019] It is beneficial to realize flexible control of the disc cutter through the driven walking wheel, the disc cutter and the cutter driving motor, especially in the field with complex terrain, the cutting height of each corn stalk is different, and the traditional fixed cutter is easy to wear; it is beneficial to cut the corn stalks when entering the clamping mechanism by the disc cutter arranged outside the gantry, so as to avoid the corn stalks being pulled during the transportation of the grain separating belt, thereby affecting the service life of the grain separating belt.

[0020] Furthermore, the distance that the disc cutter protrudes from the front end of the gantry is smaller than the distance that the grass dividing assembly protrudes from the front end of the gantry.

[0021] The arrangement of the position of the grain-separating component in front and the disc cutter in the back is advantageous, so that when the corn stalk is cut, there is a fixed force point at the upper end thereof, and the stalk is not easy to slip during the cutting process, and the problems of missed cutting, insufficient cutting, and incomplete cutting can be avoided.

[0022] Furthermore, it also includes a collecting frame, which is arranged below the square tube frame and connected to the square tube frame in the gantry to form a collecting space. Along the length direction of the main beam, the length of the collecting space is greater than the length of the lateral extrusion space.

[0023] It is beneficial to collect the harvested corn cobs in time through the collecting frame, and by setting the length of the collecting space to be greater than the length of the lateral squeezing space, the corn cobs can fall completely into the collecting frame after being subjected to the lateral force of the picking roller.

[0024] Furthermore, it also includes a battery box arranged above the tracked trolley, the tracked trolley includes a track wheel plate, the collection frame includes a front plate, a bottom plate and a tail plate, the front plate and the bottom plate are both fixed on the track wheel plate and the battery box, and the tail plate is movably connected to the bottom plate by a hinge.

[0025] It is beneficial to power the entire corn harvester through the battery chassis, so as to achieve the effect of automatic harvesting by the unmanned corn harvester; it is beneficial to provide support for the collecting frame through the track wheel plate, and the frame is fixed on the battery chassis through the front plate and the rear plate, and the tail plate can be flexibly opened through the hinge.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: the traction and grip of the corn harvester are enhanced by the crawler trolley, so that the corn harvester can be more flexible and adaptable to complex terrain automatically, and the stability of the corn harvester is enhanced; the multiple components on the harvester are compactly arranged by the gantry, so that the space occupied by the corn harvester is reduced and the flexible steering is convenient; the connection space between the clamping mechanism and the picking roller and the force direction when squeezing the corn cobs are changed by the inclined main beam; the lateral squeezing space is used to make the picking of corn cobs without additional power input, thereby reducing the energy consumption of the picking process, and at the same time the lateral pulling force makes picking more labor-saving, the corn cobs are less damaged by squeezing, and the picking quality of the corn cobs is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the left front axonometric structure of the present invention.

[0028] Figure 2 It is a schematic diagram of the left rear axonometric structure of the present invention.

[0029] Figure 3 It is a left-side structural schematic diagram of the present invention.

[0030] Figure 4 It is a front view structural schematic diagram of the present invention.

[0031] Figure 5 It is a schematic diagram of the top structure of the present invention.

[0032] Figures and symbols: 1. Clamping mechanism; 2. Picking roller; 3. Cutting knife; 4. Collecting frame; 5. Track trolley; 6. Main beam; 7. Stranding assembly; 8. Multi-hole adjustment square tube; 9. Driven walking wheel; 10. Clamping hand belt; 11. Disc cutting knife; 12. Clamping hand big wheel; 13. Cutting knife driving motor; 14. Stranding belt; 15. Profiling assembly; 16. Track wheel unit; 17. Battery chassis; 18. Tail plate; 19. Protective shell; 20. Gantry; 21. Square tube frame. DETAILED DESCRIPTION

[0033] The drawings of the present invention are only for illustrative purposes and should not be construed as limiting the present invention. In order to better illustrate the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; it is understandable to those skilled in the art that some well-known structures and their descriptions in the drawings may be omitted. Example

[0034] like Figure 1-5 As shown, a self-propelled corn harvester includes a crawler trolley, a gantry arranged above the crawler trolley, a clamping mechanism and a picking roller fixed on the gantry, the clamping mechanism includes a main beam inclined downward from the tail to the front and a straw dividing assembly protruding from the gantry, and the picking roller is connected to the tail of the main beam and forms a lateral extrusion space with the clamping mechanism.

[0035] In this embodiment, the crawler trolley 5 is used to replace the traditional wheeled chassis, which is convenient for driving on various terrains, including mountains, hills and other complex terrains. In addition to strong adaptability, the crawler trolley 5 can also achieve a more stable corn harvester during driving through better traction and grip; in contrast, the traditional wheeled chassis is prone to slipping or overturning when dealing with complex terrain and soil conditions; the crawler trolley 5 can also achieve turning on the spot, and the turning radius is small, and flexible steering can be achieved in fields with smaller land. The gantry 20 has a large space and can carry a variety of components such as the clamping mechanism 1 and the picking roller 2, making the structure of the corn harvester more compact. The picking roller 2 is a symmetrical spiral double-roller structure, and the lateral extrusion space formed by the picking roller 2 and the clamping mechanism 1 is arranged in a "human" shape. Compared with the traditional corn harvester that picks the corn upwards, this "human" shape arrangement allows the corn ears to be picked from top to bottom. At the same time, when picking the corn ears, the force at the connection between the corn ears and the stalks is a lateral force, so that the driven rotation in the picking roller 2 does not require power input, which simplifies the overall structure of the picking roller 2 and reduces the quality damage of the corn ears caused by squeezing.

[0036] In this embodiment, the corn cob is on the branch of the corn stalk. When the upper end of the corn stalk is clamped by the clamping mechanism 1 and transported to the lateral squeezing space to start picking, the branch with the corn cob is heavier than the corn stalk, and it leans forward to contact the picking roller 2 first. The corn stalk is clamped and transported in the main beam 6. The corn cob branch in front is squeezed by the picking roller 2 and separated from the corn stalk behind. The picked corn cob falls to the bottom of the picking roller 2. The quality of the corn cob is not damaged during the whole picking process.

[0037] The clamping mechanism 1 includes two groups, each group of clamping mechanism 1 includes two main beams 6, and the main beams 6 are connected to the gantry 20 through a square tube frame 21. The picking roller 2 includes two symmetrical spiral double-roller structures. The first gap between the two main beams 6 is aligned with the second gap between the two symmetrical spiral double-roller structures, and the connection between the first gap and the second gap forms a lateral extrusion space.

[0038] In this embodiment, the clamping mechanism 1 uses the main beam 6 as the skeleton, the clamping hand wheel 12 is connected to the front and rear ends of the main beam 6, the driving motor is connected to the clamping hand wheel 12 installed on the rear side of the main beam 6, and the straw dividing assembly 7 is installed below the clamping hand wheel 12 on the front side of the clamping mechanism 1. A square tube frame 21 is fixed to the bottom of the gantry 20, and the main beam 6 is connected to the square tube frame 21. The clamping hand wheel 12 is connected to both ends of the main beam 6, and a protective shell 19 is fixed to the upper end of the main beam 6. The clamping hand wheel 12 on the rear side of the main beam 6 is installed with a driving motor 24, and the lower side of the clamping hand wheel 12 on the front side is fixed with the straw dividing assembly 7, and the picking roller 2 is connected to the clamping mechanism 1 through the square tube frame 21.

[0039] In the present embodiment, the corn cobs are on the branches of the corn stalks, and the corn stalks are divided into strands by the straw dividing assembly 7. When the corn stalks are clamped at the upper end by the clamping hand wheel 12 in the clamping mechanism 1 and transported to the lateral extrusion space at the first gap to start the picking action, the branches with corn cobs are heavier than the corn stalks, and they lean forward to contact the picking roller 2 first, while the corn stalks are still clamped and transported in the first gap. The force applied to the front corn cob branches at the second gap is different from the force applied to the rear corn stalks in the first gap, thereby generating a lateral force that separates the corn cob branches from the corn stalks, thereby improving the picking quality of the corn cobs.

[0040] The symmetrical spiral double-roller structure comprises a first spiral roller and a second spiral roller, and the convex strips on the first spiral roller, the convex strips on the second spiral roller and the second gap form a V-shaped extrusion space.

[0041] In this embodiment, the convex strips on the first spiral roller and the second spiral roller are arranged in a "V" shape. This arrangement allows the picking ear 2 rollers to rotate with the pulling of the corn stalks, without the need for power input, saving power input and simplifying the overall structure.

[0042] In this embodiment, the kinetic energy of the corn stalks at the first gap drives the first spiral roller and the second spiral roller to rotate, and the first spiral roller and the second spiral roller have opposite rotation directions due to the setting of the convex strips thereon. The contact surfaces of the corn cob branches and the corn stalks at the second gap are different, so that the forces applied to the two are also different. Therefore, the corn cob branches can be easily peeled off the corn stalks without damaging the quality of the corn cobs.

[0043] Each set of clamping mechanisms also includes a clamping hand wheel 12 protruding from the main beam 6. There is a gap between the two sets of parallel clamping mechanisms 1. A guide is provided at the head of the gap. The straw separating assembly 7 includes a straw separating belt 14. The clamping hand wheel 12 and the guide form two clamping openings symmetrically arranged along the gap with the straw separating belt 14 respectively. The opening of the clamping opening gradually narrows to a first gap.

[0044] In this embodiment, the two clamping hand wheels 12 on the outside of the front side are connected to the straw separating belt 14 and the clamping hand belt 10 at the same time. The clamping hand wheels 12 support and drive the clamping hand belt 10, so that the upper end of the corn stalk straightened by the straw separating component 7 to the clamping hand wheels 12 is clamped, and at the same time, the disc cutter cuts off the bottom end of the corn stalk, and the corn plant is transported backward and upward along with the clamping hand wheels 12.

[0045] In this embodiment, the clamping hand wheel 12 can also control the opening and closing angle of the straw separating component 7 to adapt to the clamping and picking of corn stalks of different densities.

[0046] The straw dividing assembly also includes a tensioning wheel, a fixed wheel and a driving wheel motor arranged in the main beam. The driving wheel motor drives the straw dividing belt to move on the tensioning wheel and the fixed wheel. The tensioning wheel and the fixed wheel are staggered in the main beam, and the ratio of the number of the tensioning wheel to the number of the fixed wheels is 2:1.

[0047] In this embodiment, the tensioning wheels 22 and the fixed wheels 23 are staggered and connected to the main beam 6, and the number of the tensioning wheels 22 and the fixed wheels 23 is set at 2:1, so that the clamping of the grain separation belt 14 is more compact, and the corn stalks are prevented from slipping.

[0048] It also includes a cutting knife 3, and the gantry 20 includes a multi-hole adjustable square tube 8. The cutting knife 3 is arranged between the crawler trolley 5 and the gantry 20 through a profiling component 15. The height of the cutting knife 3 is adjusted on the gantry 20 through the multi-hole adjustable square tube 8.

[0049] In this embodiment, the cutting knife 3 is connected to the square tube frame 21 through the profiling component 15. The cutting knife 3 can be profiled through the profiling component 15. The cutting knife 3 can be profiled according to the undulations of the ridge surface to avoid cutting into the soil and damaging the cutting knife, and can ensure the height of the cutting point from the ground.

[0050] The cutter 3 includes a driven running wheel 9, a disc cutter 11 and a cutter drive motor 13. The driven running wheel 9 is arranged on both sides of the crawler trolley 5 through a multi-hole position adjustment square tube 8. The driven running wheels 9 on both sides each include two. The disc cutter 11 protrudes from the gantry 20.

[0051] In this embodiment, the cutter 3 is composed of two driven walking wheels 9, a disc cutter 11 and a cutter drive motor 13 connected by a square tube frame 21. The cutter 3 can be adjusted in height by connecting to the porous positions on the square tube frame 21. The disc cutter 11 protrudes from the gantry 20 to cut the corn cobs before picking them, which is convenient for the sequential processing of the corn stalks in the clamping mechanism 1 and the picking roller 2, avoiding the uncut corn stalks from being pulled in the clamping mechanism 1, thereby damaging the service life of the corn harvester.

[0052] The distance that the disc cutter 11 protrudes from the front end of the gantry 20 is smaller than the distance that the grass dividing assembly 7 protrudes from the front end of the gantry 20.

[0053] In this embodiment, the straw separating component 7 contacts the corn stalks first, and the disc cutter 11 contacts the corn stalks later, so that the disc cutter 11 has an upper fixed point when exerting force to cut, avoiding slipping when cutting the corn stalks.

[0054] It also includes a collecting frame 4, which is arranged below the square tube frame 21 and connected to the square tube frame 21 in the gantry 20 to form a collecting space. Along the length direction of the main beam 6, the length of the collecting space is greater than the length of the lateral extrusion space.

[0055] In this embodiment, the picking roller 2 extends from the middle of the clamping mechanism 1 to the rear side to just below the end of the clamping mechanism 1, so that the picked corn ears fall into the collecting frame 4; the length of the collecting space is greater than the length of the lateral squeezing space to avoid the picked corn ears being missed.

[0056] It also includes a battery box 17 arranged above the crawler trolley 5, the crawler trolley 5 includes a track wheel plate, the collection frame 4 includes a front plate, a bottom plate and a tail plate 18, the front plate and the bottom plate are both fixed on the track wheel plate and the battery box 17, and the tail plate 18 is movably connected to the bottom plate by a hinge.

[0057] In this embodiment, the crawler trolley 5 is composed of crawler wheel monomers 16 on both sides of the vehicle body fixed by a gantry 20, the battery box 17 is fixed on the crawler wheel monomer 16, the collection frame 4 is fixed on the battery box 17, the collection frame 4 is arranged directly below the picking roller 2, and the bottom of the collection frame 4 has a backward and downward tilt angle, and the collection frame 4 and the tail plate 18 form a rotating structure through hinges, and the opening and closing ability is provided by an electric push rod. When the corn cobs in the collection frame 4 are full, the corn harvester moves to the storage place, and the electric push rod opens the tail plate 18. Since the bottom of the collection frame 4 is tilted backward and downward, the corn cobs slide out with the action of gravity.

[0058] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the technical solution of the present invention, and are not intended to limit the specific implementation methods of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the claims of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A self-propelled corn harvester, characterized in that: It includes a crawler trolley, a gantry frame arranged above the crawler trolley, a clamping mechanism and a picking roller fixed on the gantry frame, the clamping mechanism includes a main beam inclined downward from the tail to the front and a straw-dividing assembly protruding from the gantry frame, and the picking roller is connected to the tail of the main beam and forms a lateral extrusion space with the clamping mechanism.

2. The self-propelled corn harvester according to claim 1, characterized in that: The clamping mechanism includes two groups, each group of clamping mechanisms includes two main beams, the main beams are connected to the gantry through a square tube frame, the picking roller includes two symmetrical spiral double-roller structures, the first gap between the two main beams is aligned with the second gap between the two symmetrical spiral double-roller structures, and the connection between the first gap and the second gap forms a lateral extrusion space.

3. The self-propelled corn harvester according to claim 2, characterized in that: The symmetrical spiral double-roller structure comprises a first spiral roller and a second spiral roller, and the convex strips on the first spiral roller, the convex strips on the second spiral roller and the second gap form a V-shaped extrusion space.

4. The self-propelled corn harvester according to claim 2, characterized in that: Each set of clamping mechanisms also includes a clamping hand wheel protruding from the main beam. There is a gap between the two sets of parallel clamping mechanisms. A guide is provided at the head of the gap. The straw separating assembly includes a straw separating belt. The clamping hand wheel and the guide form two clamping openings symmetrically arranged along the gap with the straw separating belt respectively. The opening of the clamping opening gradually narrows to a first gap.

5. The self-propelled corn harvester according to claim 1, characterized in that: The straw dividing assembly also includes a tensioning wheel, a fixed wheel and a driving wheel motor arranged in the main beam. The driving wheel motor drives the straw dividing belt to move on the tensioning wheel and the fixed wheel. The tensioning wheel and the fixed wheel are staggered in the main beam, and the ratio of the number of the tensioning wheel to the number of the fixed wheels is 2:

1.

6. The self-propelled corn harvester according to claim 1, characterized in that: It also includes a cutting knife, the gantry includes a multi-hole position adjustment square tube, the cutting knife is arranged between the crawler trolley and the gantry through a profiling component, and the cutting knife is adjusted in height on the gantry through the multi-hole position adjustment square tube.

7. The self-propelled corn harvester according to claim 6, characterized in that: The cutter comprises a driven walking wheel, a disc cutter and a cutter driving motor. The driven walking wheels are arranged on both sides of the crawler trolley through a multi-hole position adjustment square tube. The driven walking wheels on both sides each comprise two, and the disc cutter protrudes out of the gantry.

8. The self-propelled corn harvester according to claim 6, characterized in that: The distance that the disc cutter protrudes from the front end of the gantry is smaller than the distance that the grass dividing assembly protrudes from the front end of the gantry.

9. The self-propelled corn harvester according to claim 2, characterized in that: It also includes a collecting frame, which is arranged below the square tube frame and connected to the square tube frame in the gantry to form a collecting space. Along the length direction of the main beam, the length of the collecting space is greater than the length of the lateral extrusion space.

10. The self-propelled corn harvester according to any one of claims 1 to 9, characterized in that: It also includes a battery box arranged above the crawler trolley, the crawler trolley includes a track wheel plate, the collection frame includes a front plate, a bottom plate and a tail plate, the front plate and the bottom plate are both fixed on the track wheel plate and the battery box, and the tail plate is movably connected to the bottom plate through a hinge.

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