Self-propelled corn harvesting conveying device and method thereof

Abstract

The self-propelled corn harvesting conveying device comprises a main machine frame, a Z-shaped conveying frame is fixed to the top end of the main machine frame, a Z-shaped belt conveyor is installed in the Z-shaped conveying frame, and a harvesting box used for receiving corn ears is installed at the top end of the Z-shaped conveying frame; rib column type latticed grids are installed on the front inner wall and the rear inner wall of the harvesting box, and a roller dragging type chip removal assembly and a chip removal window are arranged on the portion, on one side of the rib column type latticed grids, of the inner wall of the harvesting box. Corn ears are conveyed upwards through the Z-shaped belt conveyor, and the three-shaft chain wheel transmission assembly forces the chain wheel coupling type wind power impurity removal assembly at the top end of the harvesting box and the roller dragging type chip removal assembly on the inclined inner wall to work. Scrap blowing airflow generated by the chain wheel coupling type wind power impurity removal assembly is used for blowing away crushed stems, leaves and straw at an inlet of the harvesting box, and unintercepted impurities are discharged by the roller dragging type chip removal assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of corn harvesters, and specifically to a self-propelled corn harvesting conveying device and method. Background Art

[0002] The corn cob conveying device in a self-propelled corn harvester is an important part to ensure efficient harvesting. Its main function is to quickly and smoothly transport the picked corn ears to the ear box or subsequent processing area. The conveying device usually consists of several main parts such as a conveyor belt or chain, a drive system, a guiding device, a support structure, and a cleaning device. The conveyor belt or chain is the core part, which is powered by the drive system to ensure the smooth movement of the ears. The guiding device is responsible for guiding the ears to move along a predetermined path, reducing the risk of deviation and blockage. The support structure provides stability for the entire device to ensure reliability during operation, while the cleaning device helps to keep the conveying process unobstructed. In terms of the working principle, after the corn ears are picked, they naturally fall into the conveying device by gravity. After the drive system is started, it drives the conveyor belt or chain to move, and the ears are gradually transported forward. The inclined design of the conveyor belt and the cooperation of the guiding device ensure the stable movement of the ears, and finally they reach the collection area smoothly;

[0003] For example, a conveying device of a self-propelled corn harvester disclosed in the authorized publication number CN218318858U includes a device main body. One end of the device main body is provided with a buffer plate. One end of the buffer plate is installed with a movable plate through a first rotating shaft. Both ends of the outer surface of the first rotating shaft are installed with first torsion springs. By setting the buffer plate, the first rotating shaft, the first torsion springs, and the movable plate, during the process of conveying corn, the inclined buffer plate can perform a certain buffering treatment on the corn. And when the corn rolls down onto the movable plate, the movable plate will flip downward through the first rotating shaft and compress the first torsion springs, so as to buffer and absorb the impact when the corn falls downward through the movable plate. However, in the above technical solution, when using a belt conveyor to receive and transport the corn cobs discharged from the self-propelled corn harvester, the self-propelled corn harvester will also send crushed stems and leaves (thickness < 0.5 mm) and crushed straws (length > 5 cm) into the conveying device. This is particularly obvious when dealing with overripe or dehydrated corn. At this time, this part of the corn husk and stem fragments enter the gaps of the conveying device and the subsequent bin. The mixing of sundries easily leads to increased wear of the conveyor belt and other mechanical components, shortening the service life of the equipment. Especially when the crushed stems and leaves and straws are embedded in the gaps of the belt conveyor roller bearings or idlers, forming hard jamming points, resulting in device failures and increasing the frequency of maintenance and repair; moreover, the mixing of crushed stems and leaves and straws will also occupy the space of the bin, resulting in a reduction in the actual available ear collection volume, thus affecting the overall collection efficiency. And during threshing and sorting, the appearance of sundries will also increase the complexity and difficulty of processing. Summary of the Invention

[0004] The object of the present invention is to provide a conveying device and method for self-propelled corn harvesting. In self-propelled corn harvesting, corn ears are removed and sent into the harvesting box by gravity. During this process, the bevel gear dual-zone drive unit transmits rotational power to the Z-shaped belt conveyor and the three-axis sprocket transmission assembly. The Z-shaped belt conveyor conveys the corn ears upward, while the three-axis sprocket transmission assembly forces the sprocket-coupled wind impurity removal assembly at the top of the harvesting box and the roller-dragging chip removal assembly on the inclined inner wall to work. Thus, the blowing chip airflow generated by the sprocket-coupled wind impurity removal assembly blows away crushed stems and leaves and crushed straw at the entrance of the harvesting box, and the unblocked foreign matters are discharged by the roller-dragging chip removal assembly, thereby reducing the retention of foreign objects on the harvesting box and the Z-shaped belt conveyor, so as to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A conveying device for self-propelled corn harvesting, comprising:

[0006] A main frame, at the top of the main frame is fixed a Z-shaped conveying frame, and inside the Z-shaped conveying frame is installed a Z-shaped belt conveyor. At the top of the Z-shaped conveying frame is installed a harvesting box for receiving corn ears, and on the front and rear inner walls of the harvesting box are installed rib-column type grid-like grilles. On one side of the inner wall of the harvesting box of the rib-column type grid-like grille is provided a roller-dragging chip removal assembly and a chip removal window. At the top opening positions on both sides of the Z-shaped belt conveyor of the harvesting box are installed sprocket-coupled wind impurity removal assemblies;

[0007] A double right-angle frame, the double right-angle frame is arranged on one side of the main frame. On the outer wall of the double right-angle frame close to the main frame are installed two three-axis sprocket transmission assemblies for driving the roller-dragging chip removal assembly and the sprocket-coupled wind impurity removal assembly to work. Between the two three-axis sprocket transmission assemblies is installed a pair of gear drives for maintaining power connection. On one side of the surface of the Z-shaped conveying frame is installed a bevel gear dual-zone drive unit for driving the Z-shaped belt conveyor and one of the three-axis sprocket transmission assemblies to work.

[0008] Preferably, a connecting beam is fixed inside the Z-shaped conveying frame near the outlet end of the Z-shaped belt conveyor, and at the top of the connecting beam are fixed two upward-extending convex columns, and at the top of the convex columns are fixed scraping rubber columns for contacting the lower surface of the conveyor belt of the Z-shaped belt conveyor.

[0009] Preferably, a plurality of baffles for supporting corn ears are arranged on the outer peripheral surface of the conveyor belt of the Z-shaped belt conveyor. The double right-angle frame is composed of two sub-frames and a vertical plate. The two sub-frames are arranged below the sprocket-coupled wind impurity removal assembly, and the vertical plate is fixed between the two sub-frames.

[0010] Preferably, the bevel gear dual-zone drive unit includes a reduction motor, a bevel gear transmission assembly, and a first-stage double-shaft sprocket transmission structure. The reduction motor is installed on an outer wall of one side of the Z-shaped conveyor frame and is used to drive the Z-shaped belt conveyor. The bevel gear transmission assembly is arranged on the outer wall of the other side of the Z-shaped conveyor frame. The first-stage double-shaft sprocket transmission structure is arranged on the back of the vertical plate, and the first-stage double-shaft sprocket transmission structure is used to transmit the rotational power of the reduction motor and the bevel gear transmission assembly to one of the three-shaft sprocket transmission assemblies and one of the roller drag type chip removal assemblies.

[0011] Preferably, the bevel gear transmission assembly includes a driving bevel gear installed at the end of the output shaft of the reduction motor, a coupling shaft rotatably installed on the outer wall of one side of the Z-shaped conveyor frame through a bearing seat, and a driven bevel gear fixed to one end of the coupling shaft. The driven bevel gear and the driving bevel gear mesh with each other. The other end of the coupling shaft penetrates to the outside of the vertical plate and is connected to the first-stage double-shaft sprocket transmission structure.

[0012] Preferably, the roller drag type chip removal assembly includes support plates fixed on both sides of the back of the rib-column type grid-like grille, a clearance part arranged between the two support plates, and a long rubber roller shaft rotatably installed between the two support plates. A plurality of rubber strips are fixed on the outer peripheral surface of the long rubber roller shaft. When the rubber strips rotate around the long rubber roller shaft, they contact the rib-column type grid-like grille. One end of the long rubber roller shaft sequentially penetrates to the outside of the support plate, the three-shaft sprocket transmission assembly, and the vertical plate and is connected to one end of the coupling shaft through the first-stage double-shaft sprocket transmission structure.

[0013] Preferably, the three-shaft sprocket transmission assembly includes a transmission shaft rotatably installed at the top of the auxiliary frame through a bearing seat, a driven short shaft rotatably installed at the top of the vertical plate, and a second-stage sprocket speed increasing transmission structure installed between the transmission shaft, the driven short shaft, and the long rubber roller shaft. The driven short shaft drives the operation of another three-shaft sprocket transmission assembly through a pair of gear drives.

[0014] Preferably, one side of the surface of the vertical plate is fixed with an inclined support arm, and one end of the surface of the inclined support arm is rotatably installed with a tensioning sprocket for pressing against the second-stage sprocket speed increasing transmission structure.

[0015] Preferably, the sprocket coupling type wind impurity removal assembly includes a hollow inclined arm obliquely fixed at the top of the auxiliary frame, a secondary shaft rotatably installed at one end inside the hollow inclined arm, and an axial flow fan fixed on one side of the top of the harvesting box. One end of the secondary shaft is installed with a belt drive structure for driving the input shaft of the axial flow fan to rotate. The other end of the secondary shaft is installed with a third-stage sprocket transmission structure for connecting with one end of the transmission shaft.

[0016] The present invention also provides a conveying method for self-propelled corn harvesting. For the self-propelled corn harvesting conveying device as described above, it includes the following steps:

[0017] S101: Check the lubricating oil condition of the bevel gear dual-zone drive unit to ensure smooth power transmission. Then, check the cleanliness of the ribbed columnar grid-like grille to ensure that no debris obstructs the passage of the ear. At the same time, check the tension and wear condition of the Z-type belt conveyor;

[0018] S102: The operator starts the self-propelled corn harvester and the bevel gear dual-zone drive unit to work. As the self-propelled corn harvester moves forward, under the action of the ear stripper rolls and ear stripper plates, the corn ears are collected into the harvesting box. The Z-type belt conveyor sends the ears out obliquely upward. At this time, broken corn stalks, straw, and foreign objects will enter the harvesting box together with the corn ears;

[0019] S103: The bevel gear dual-zone drive unit and the three-axis sprocket drive assembly drive the sprocket-coupled wind-removing assembly to work. The sprocket-coupled wind-removing assembly generates a strong airflow to blow away the debris at the entrance of the harvesting box. At the same time, the roller-dragging chip removal assembly timely discharges the debris that has not been removed by the wind from the chip discharge window to ensure the smooth discharge of the debris;

[0020] S104: After the harvesting is completed, the operator needs to clean the device, including cleaning the residual ears and debris in the harvesting box to keep the device clean. At the same time, check the wear condition of each component, including the Z-type belt conveyor, the sprocket-coupled wind-removing assembly, and the roller-dragging chip removal assembly, and perform necessary maintenance to ensure good condition for the next use.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: The conveying device and method for self-propelled corn harvesting of the present invention are provided with a harvesting box, a ribbed columnar grid-like grille, a Z-type belt conveyor, a bevel gear dual-zone drive unit, a three-axis sprocket drive assembly, and a sprocket-coupled wind-removing assembly and other cooperating structures. The self-propelled corn harvester removes the corn ears and relies on gravity to send them into the harvesting box. During this process, the bevel gear dual-zone drive unit transmits rotational power to the Z-type belt conveyor and the three-axis sprocket drive assembly. The Z-type belt conveyor conveys the corn ears upward, and the three-axis sprocket drive assembly forces the sprocket-coupled wind-removing assembly at the top of the harvesting box and the roller-dragging chip removal assembly on the inclined inner wall to work. Thus, the blowing airflow generated by the sprocket-coupled wind-removing assembly blows away the broken stalks and broken straw at the entrance of the harvesting box, and the unblocked debris is discharged by the roller-dragging chip removal assembly;

[0022] Among them, the bevel gear dual-zone drive unit drives the Z-shaped belt conveyor and the three-axis sprocket transmission assembly through a single input shaft, achieving spatial decoupling and functional coupling of power distribution. On the one hand, the Z-shaped belt conveyor uses a vertical-horizontal fold line layout to complete the directional lifting of corn ears in a limited space, avoiding the problem of material slipping caused by too large an inclination angle of the traditional straight conveyor belt. On the other hand, the three-axis sprocket transmission assembly optimizes the gear ratio, efficiently transmits power to the sprocket-coupled wind impurity removal assembly at the top, and simultaneously drives the roller-dragging chip removal assembly on the inclined inner wall. By integrating the two functions of conveying and cleaning under the same power source, it not only reduces the energy consumption and failure points brought by additional drive units, but also avoids mechanical interference through spatial misalignment layout. During this process, the sprocket-coupled wind impurity removal assembly generates a strong airflow to blow away impurities, ensuring cleanliness at the entrance of the harvesting box, reducing the retention of impurities in the harvesting box, and effectively preventing impurities from interfering with subsequent processing links. The roller-dragging chip removal assembly further ensures that impurities not removed by the wind can be discharged in time, reducing the accumulation of shredded stems and leaves and shredded straw inside the conveying device and the harvesting box, and preventing impurities from flowing back into the harvesting box, thereby reducing the occurrence frequency of device wear and failures;

[0023] Secondly, the directional airflow generated by the sprocket-coupled wind impurity removal assembly at the entrance of the harvesting box can sort and blow away shredded stems and leaves according to their different suspension characteristics. Hard impurities not removed by the airflow are forcibly discharged through the frictional traction force between the roller-dragging chip removal assembly and the inner wall of the harvesting box. This not only avoids the risk of failure of a single cleaning method in a complex impurity environment but also reduces the associated interference with corn ears, enabling the self-propelled corn harvester and conveyor to maintain continuous trouble-free operation even under overripe corn conditions;

[0024] Finally, the reduction of impurities directly reduces the risk of blockage caused by stem entanglement and debris caking. After the reduction of hard straw fragments, the probability of extrusion and scratching of corn ears during transportation decreases, the damage to the ear epidermis decreases, and at the same time, the space occupied by the harvesting box is reduced, maintaining the capacity of the harvesting box, ensuring the rapid collection of corn ears, reducing the cost and time of subsequent processing, and improving the overall harvesting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the main view sectional structure schematic diagram of the present invention;

[0026] Figure 2 is the three-dimensional structure schematic Figure 1 ;

[0027] Figure 3 is the three-dimensional structure schematic Figure 2 ;

[0028] Figure 4 is the three-dimensional structure schematicFigure 3 ;

[0029] Figure 5 Schematic diagram of the three-dimensional structure of the present invention Figure 4 ;

[0030] Figure 6 Schematic diagram of the three-dimensional sectional structure of the present invention;

[0031] Figure 7 Schematic diagram of the three-dimensional sectional structure of the Z-shaped belt conveyor of the present invention;

[0032] Figure 8 Schematic diagram of the three-dimensional structure of the roller-dragging type chip removal assembly of the second embodiment of the present invention Figure 1 ;

[0033] Figure 9 Schematic diagram of the three-dimensional structure of the roller-dragging type chip removal assembly of the second embodiment of the present invention Figure 2 ;

[0034] Figure 10 Schematic diagram of the three-dimensional structure of the rib-column type grid-shaped grille of the second embodiment of the present invention;

[0035] Figure 11 Schematic diagram of the three-dimensional structure of the three-axis sprocket drive assembly of the third embodiment of the present invention;

[0036] Figure 12 Schematic diagram of the three-dimensional structure of the sprocket coupling type wind impurity removal assembly of the third embodiment of the present invention.

[0037] In the figure: 1, main frame; 2, Z-shaped conveying frame; 201, connecting beam; 202, convex column; 203, scraping rubber column; 3, Z-shaped belt conveyor; 4, reduction motor; 5, harvesting box; 501, chip removal window; 6, baffle; 7, auxiliary frame; 8, vertical plate; 801, first-stage double-axis sprocket drive structure; 9, bevel gear drive assembly; 901, coupling shaft; 902, driven bevel gear; 903, driving bevel gear; 10, rib-column type grid-shaped grille; 1001, support plate; 1002, empty space part; 11, roller-dragging type chip removal assembly; 1101, long rubber roller shaft; 1102, rubber strip; 12, sprocket coupling type wind impurity removal assembly; 1201, hollow inclined arm; 1202, auxiliary shaft; 1203, third-stage sprocket drive structure; 1204, belt pulley drive structure; 1205, axial flow fan; 13, three-axis sprocket drive assembly; 1301, drive shaft; 1302, driven short shaft; 1303, second-stage sprocket speed increasing drive structure; 1304, diagonal support arm; 1305, tensioning sprocket; 14, pair gear drive. Detailed implementation manners

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] Embodiment 1 is given by Figures 1 to 7 The present invention includes a main frame 1. A Z-shaped conveyor frame 2 is fixed at the top of the main frame 1. A Z-shaped belt conveyor 3 is installed inside the Z-shaped conveyor frame 2. A harvesting box 5 for receiving corn cobs is installed at the top of the Z-shaped conveyor frame 2. Reinforced column grid-shaped grilles 10 are installed on the front and rear inner walls of the harvesting box 5. A roller-dragging chip removal assembly 11 and a chip removal window 501 are arranged on the inner wall of the harvesting box 5 on one side of the reinforced column grid-shaped grille 10. The internal inclination design of the harvesting box 5 and the inclined inner wall guide the corn cobs to naturally slide towards the conveying inlet of the Z-shaped belt conveyor 3, avoiding excessive local pressure caused by gravity accumulation. At the same time, as a temporary storage buffer pool, it balances the rhythm difference between mechanical harvesting and rear-end conveying and prevents instantaneous overload.

[0040] The reinforced column grid-shaped grille 10 allows crushed corn stems, leaves and straws to pass through, while intercepting the complete cobs in the harvesting box 5. The arrangement of its reinforced columns forms a non-uniform resistance field, prompting impurities to gather at the edge of the harvesting box 5. At the same time, when the high-carbon steel material and the cross-reinforced column welding structure of the reinforced column grid-shaped grille 10 bear the impact of corn, the stress is dispersed through deformation, avoiding the screening failure caused by grille deformation.

[0041] Sprocket-coupled wind-removing assemblies 12 are installed at the top opening positions on both sides of the Z-shaped belt conveyor 3 of the harvesting box 5.

[0042] Double right-angle frames are arranged on one side of the main frame 1. Two three-axis sprocket drive assemblies 13 for driving the roller-dragging chip removal assembly 11 and the sprocket-coupled wind-removing assembly 12 to work are installed on the outer wall of the double right-angle frame close to the main frame 1. A pair of gear drives 14 for maintaining power connection are installed between the two three-axis sprocket drive assemblies 13. A bevel gear dual-zone drive unit for driving the Z-shaped belt conveyor 3 and one of the three-axis sprocket drive assemblies 13 to work is installed on one side of the surface of the Z-shaped conveyor frame 2.

[0043] Inside the Z-shaped conveyor frame 2 near the outlet end of the Z-shaped belt conveyor 3, a connecting beam 201 is fixedly installed. At the top of the connecting beam 201, two protruding columns 202 extending upward are fixedly installed. At the top of the protruding columns 202, scraping rubber columns 203 for contacting the lower surface of the conveyor belt of the Z-shaped belt conveyor 3 are fixedly installed. When the Z-shaped belt conveyor 3 is driven to work by the bevel gear dual-zone drive unit, the connecting beam 201 and the protruding columns 202 provide a supporting force for the scraping rubber columns 203 in the Z-axis direction. Since the upper surface of the scraping rubber columns 203 contacts the belt surface of the Z-shaped belt conveyor 3, the residual and adhered broken corn leaves, stems and straws on the belt surface of the Z-shaped belt conveyor 3 are scraped off by the scraping rubber columns 203 to maintain the cleanliness of the belt surface of the Z-shaped belt conveyor 3;

[0044] On the outer peripheral surface of the conveyor belt of the Z-shaped belt conveyor 3, a number of baffles 6 for supporting corn ears are arranged. On the belt surface of the Z-shaped belt conveyor 3, baffles 6 for supporting the ears are arranged to prevent the ears from rolling and falling off, so as to realize the seamless connection of the vertical lifting and horizontal transfer of materials within the limited fuselage height;

[0045] The double right-angle frame is composed of two sub-frame racks 7 and a vertical plate 8. The two sub-frame racks 7 are arranged below the sprocket-coupled wind-removing assembly 12, and the vertical plate 8 is fixedly installed between the two sub-frame racks 7.

[0046] A conveying method for self-propelled corn harvesting in this embodiment, such as the above-mentioned conveying device for self-propelled corn harvesting, includes the following steps:

[0047] S101: Check the lubricating oil condition of the bevel gear dual-zone drive unit to ensure smooth power transmission. Then check the cleanliness of the ribbed grid-like grille 10 to ensure that there is no debris hindering the passage of the ears. At the same time, check the tension and wear condition of the Z-shaped belt conveyor 3;

[0048] S102: The operator starts the self-propelled corn harvester and the bevel gear dual-zone drive unit to work. As the self-propelled corn harvester travels, under the action of the ear-picking rollers and ear-picking plates, the corn ears are collected into the harvesting box 5, and the Z-shaped belt conveyor 3 sends the ears out obliquely upward. At this time, broken corn leaves, stems and straw foreign matters will enter the harvesting box 5 together with the corn ears;

[0049] S103: The bevel gear dual-zone drive unit and the three-axis sprocket transmission assembly 13 drive the sprocket-coupled wind-removing assembly 12 to work. A strong air flow is generated by the sprocket-coupled wind-removing assembly 12 to blow away the sundries at the entrance of the harvesting box 5. At the same time, the roller-dragging chip removal assembly 11 timely discharges the sundries that have not been removed by the wind from the chip discharge window 501 to ensure the smooth discharge of the sundries;

[0050] S104: After the harvesting is completed, the staff needs to clean the device, including cleaning the residual cobs and sundries in the harvesting box 5 to keep the device clean. At the same time, check the wear conditions of each component, including the Z-shaped belt conveyor 3, the sprocket-coupled wind impurity removal assembly 12, and the roller-dragging chip removal assembly 11, and perform necessary maintenance to ensure good condition for the next use.

[0051] Embodiment 2, based on Embodiment 1, is given by Figure 8 , Figure 9 and Figure 10 The bevel gear dual-zone drive unit includes a reduction motor 4, a bevel gear transmission assembly 9, and a first-stage double-shaft sprocket transmission structure 801. The reduction motor 4 is installed on the outer wall of one side of the Z-shaped conveyor frame 2 and is used to drive the Z-shaped belt conveyor 3 to work. The bevel gear transmission assembly 9 is arranged on the outer wall of the other side of the Z-shaped conveyor frame 2. The first-stage double-shaft sprocket transmission structure 801 is arranged on the back of the vertical plate 8. The first-stage double-shaft sprocket transmission structure 801 is used to transmit the rotational power of the reduction motor 4 and the bevel gear transmission assembly 9 to one of the three-shaft sprocket transmission assemblies 13 and one of the roller-dragging chip removal assemblies 11;

[0052] The bevel gear transmission assembly 9 includes a driving bevel gear 903 installed at the end of the output shaft of the reduction motor 4, a coupling shaft 901 rotatably installed on the outer wall of one side of the Z-shaped conveyor frame 2 through a bearing seat, a driven bevel gear 902 fixed to one end of the coupling shaft 901, and the driven bevel gear 902 and the driving bevel gear 903 are meshed with each other. The other end of the coupling shaft 901 penetrates to the outside of the vertical plate 8 and is connected to the first-stage double-shaft sprocket transmission structure 801;

[0053] When the bevel gear dual-zone drive unit is working, the output shaft of the reduction motor 4 drives the Z-shaped belt conveyor 3 to run directly. At the same time, the output shaft of the reduction motor 4 drives the driving bevel gear 903 to rotate, and uses the driving bevel gear 903 to drive the driven bevel gear 902 and the coupling shaft 901 to rotate. Since one end of the coupling shaft 901 passes through the outside of the vertical plate 8 and drives the input shaft of one of the three-shaft sprocket transmission assemblies 13 to rotate through the first-stage double-shaft sprocket transmission structure 801, the two three-shaft sprocket transmission assemblies 13 are synchronously driven to run under the connection of the gear transmission 14. The combined use of the bevel gear dual-zone drive unit, the first-stage double-shaft sprocket transmission structure 801, the bevel gear transmission assembly 9, the three-shaft sprocket transmission assembly 13, and the gear transmission 14 realizes the "one-source dual-drive" mode, which not only ensures the action synchronism but also reduces the power competition between sub-assemblies, thereby completing the power steering in a limited space;

[0054] The roller-dragging chip removal assembly 11 includes support plates 1001 fixed on both sides of the back of the rib-column type grid-shaped grille 10, a clearance part 1002 arranged between the two support plates 1001, and a long rubber roller shaft 1101 rotatably installed between the two support plates 1001. A number of rubber strips 1102 are fixed on the outer peripheral surface of the long rubber roller shaft 1101. When the rubber strips 1102 rotate around the long rubber roller shaft 1101, they contact the rib-column type grid-shaped grille 10. One end of the long rubber roller shaft 1101 sequentially penetrates to the outside of the support plate 1001, the three-axis sprocket transmission assembly 13, and the vertical plate 8 and is connected to one end of the coupling shaft 901 through a first-stage double-axis sprocket transmission structure 801. When the roller-dragging chip removal assembly 11 is working, the three-axis sprocket transmission assembly 13 drives the long rubber roller shaft 1101 and the rubber strips 1102 to rotate. At this time, the impurities passing through the rib-column type grid-shaped grille 10 enter the clearance part 1002 between the two support plates 1001 and contact the long rubber roller shaft 1101 and the rubber strips 1102. The gap formed between the long rubber roller shaft 1101 and the rib-column type grid-shaped grille 10 gradually squeezes the residual hard impurities. The rubber strips 1102 in the rotating state drag the impurities to the chip removal window 501 by using frictional force and axial thrust to overcome the physical limitations of pure pneumatic cleaning.

[0055] Embodiment 3, on the basis of Embodiment 2, is given by Figure 11 and Figure 12 The three-axis sprocket transmission assembly 13 includes a transmission shaft 1301 rotatably installed at the top of the auxiliary frame 7 through a bearing seat, a driven short shaft 1302 rotatably installed at the top of the vertical plate 8, and a second-stage sprocket speed-increasing transmission structure 1303 installed between the transmission shaft 1301, the driven short shaft 1302, and the long rubber roller shaft 1101. The driven short shaft 1302 drives the operation of another three-axis sprocket transmission assembly 13 through a pair of gear drives 14. The coupling shaft 901 drives the long rubber roller shaft 1101 to rotate through a first-stage double-axis sprocket transmission structure 801. The long rubber roller shaft 1101 drives the transmission shaft 1301 and the driven short shaft 1302 to rotate through the second-stage sprocket speed-increasing transmission structure 1303. During this process, the transmission shaft 1301 transmits the rotational power to the sprocket-coupled wind-removing impurities assembly 12, and the driven short shaft 1302 drives the operation of the three-axis sprocket transmission assembly 13 on the other side through a pair of gear drives 14. The three-axis sprocket transmission assembly 13 distributes the power as required to the sprocket-coupled wind-removing impurities assembly 12 and the roller-dragging chip removal assembly 11 and continuously operates stably under high load to ensure the normal operation of the device;

[0056] One side of the surface of the vertical plate 8 is fixedly provided with an inclined support arm 1304. One end of the surface of the inclined support arm 1304 is rotatably installed with a tensioning sprocket 1305 for tightly pressing against the secondary sprocket speed increasing transmission structure 1303. The tensioning sprocket 1305 rotatably installed at one end of the surface of the transmission shaft 1301 is used to tightly press against the chain in the secondary sprocket speed increasing transmission structure 1303, so that the secondary sprocket speed increasing transmission structure 1303 stably drives the long rubber roller shaft 1101, the transmission shaft 1301, and the driven short shaft 1302 to rotate;

[0057] The sprocket coupling type wind impurity removal assembly 12 includes a hollow inclined arm 1201 obliquely fixed at the top end of the auxiliary frame 7, a secondary shaft 1202 rotatably installed at one end inside the hollow inclined arm 1201, and an axial flow fan 1205 fixed on one side of the top end of the harvesting box 5. One end of the secondary shaft 1202 is provided with a belt pulley transmission structure 1204 for driving the input shaft of the axial flow fan 1205 to rotate. The other end of the secondary shaft 1202 is provided with a tertiary sprocket transmission structure 1203 for interconnecting with one end of the transmission shaft 1301. The transmission shaft 1301 drives the secondary shaft 1202 at the upper end of the hollow inclined arm 1201 to rotate through the tertiary sprocket transmission structure 1203. Then, the secondary shaft 1202 drives the input shaft and the fan blades of the axial flow fan 1205 to rotate through the belt pulley transmission structure 1204. A laminar air curtain is formed at the entrance of the harvesting box 5 through the axial flow fan 1205, so that the light debris is blown away from the material flow, and the corn ears maintain a stable movement trajectory due to their large mass.

[0058] When the embodiment of the present application is in use, first, the staff checks the lubricating oil condition of the bevel gear dual-zone drive unit to ensure smooth power transmission. Then, the cleanliness of the rib-column type grid-like grille 10 is checked to ensure that there is no debris obstructing the passage of the ear. At the same time, the tension and wear condition of the Z-shaped belt conveyor 3 are checked to ensure its normal operation. In addition, the staff also needs to check the working states of the sprocket-coupled wind impurity removal assembly 12 and the roller-dragging chip removal assembly 11 to ensure that both can effectively remove impurities. After the inspection, the staff starts the self-propelled corn harvester and the bevel gear dual-zone drive unit to work. At this time, the traveling speed and the cutter height of the self-propelled corn harvester are adjusted according to the conditions of the field to adapt to different crop growth states. As the self-propelled corn harvester travels, under the action of the ear picking rollers and the ear picking plates, the corn ears are collected into the harvesting box 5. Part of the rotary power of the bevel gear dual-zone drive unit is transmitted to the Z-shaped belt conveyor 3, and the Z-shaped belt conveyor 3 sends the ears obliquely upward. During this process, broken corn stems and leaves, and straw foreign matters will enter the harvesting box 5 together with the corn ears. At this time, the bevel gear dual-zone drive unit transmits power to one of the three-axis sprocket drive assemblies 13, and the power between the two three-axis sprocket drive assemblies 13 is connected through the pair gear drive 14. Then, the three-axis sprocket drive assembly 13 drives the sprocket-coupled wind impurity removal assembly 12 to work, and the sprocket-coupled wind impurity removal assembly 12 generates a strong airflow to blow away the impurities at the entrance of the harvesting box 5. At the same time, the roller-dragging chip removal assembly 11 timely discharges the impurities that have not been removed by the wind from the chip discharge window 501 to ensure the smooth discharge of the impurities and avoid blockage. During the entire harvesting process, the staff needs to continuously monitor the operating state of the harvester, especially the operating condition of the Z-shaped belt conveyor 3 and the working effects of the sprocket-coupled wind impurity removal assembly 12 and the roller-dragging chip removal assembly 11. If problems such as conveyor belt slipping, blockage, or insufficient wind power are found, measures should be taken promptly for adjustment or repair, and attention should be paid to the matching of the traveling speed of the harvester and the growth condition of the crop to avoid ear damage caused by too fast speed. After the harvesting is completed, the staff needs to clean the device, including cleaning the residual ears and impurities in the harvesting box 5 to keep the device clean. At the same time, the wear conditions of each component are checked, including the Z-shaped belt conveyor 3, the sprocket-coupled wind impurity removal assembly 12, and the roller-dragging chip removal assembly 11, and necessary maintenance and upkeep are carried out to ensure good condition for the next use.

[0059] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0060] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-propelled corn harvesting conveyor, characterized in that: include: A main frame (1), a Z-shaped conveying frame (2) is fixed at the top of the main frame (1), and a Z-shaped belt conveyor (3) is installed inside the Z-shaped conveying frame (2), a harvesting box (5) for receiving corn ears is installed at the top of the Z-shaped conveying frame (2), and rib-column-type grid-like grilles (10) are installed on the front and rear inner walls of the harvesting box (5), a roller-drawn chip removal assembly (11) and a chip removal window (501) are arranged on the inner wall of the harvesting box (5) on one side of the rib-column-type grid-like grille (10), and a sprocket-coupled wind-powered impurity removal assembly (12) is installed at the top opening position of the harvesting box (5) on both sides of the Z-shaped belt conveyor (3); A double right-angle frame is arranged on one side of a main frame (1); two three-axis sprocket drive assemblies (13) for driving a roller-pulled chip removal assembly (11) and a sprocket-coupled wind-powered impurity removal assembly (12) are installed on the outer wall of the double right-angle frame on one side close to the main frame (1); a pair of gear transmissions (14) for maintaining power connection are installed between the two three-axis sprocket drive assemblies (13); and a bevel gear double-zone drive unit for driving a Z-type belt conveyor (3) and one of the three-axis sprocket drive assemblies (13) is installed on one side of the surface of the Z-type conveying frame (2).

2. A self-propelled corn harvesting conveyor according to claim 1, characterized in that: A connecting beam (201) is fixed inside the Z-shaped conveying frame (2) near the outlet end of the Z-shaped belt conveyor (3), and two upwardly extending protruding columns (202) are fixed at the top of the connecting beam (201), and a scraper rubber column (203) for contacting the lower surface of the conveyor belt of the Z-shaped belt conveyor (3) is fixed at the top of the protruding column (202).

3. A self-propelled corn harvesting conveyor according to claim 2, characterized in that: A plurality of baffles (6) for supporting corn ears are arranged on the outer peripheral surface of the conveyor belt of the Z-type belt conveyor (3); the double right-angle frame is composed of two auxiliary frames (7) and a vertical plate (8); the two auxiliary frames (7) are arranged below the sprocket-coupled wind-powered impurity removal assembly (12); and the vertical plate (8) is fixed between the two auxiliary frames (7).

4. A self-propelled corn harvesting conveyor according to claim 3, characterized in that: The bevel gear dual-zone drive unit comprises a reduction motor (4), a bevel gear transmission assembly (9) and a primary double-axis sprocket transmission structure (801); the reduction motor (4) is mounted on one side outer wall of the Z-type conveying frame (2) and is used to drive the Z-type belt conveyor (3) to work; the bevel gear transmission assembly (9) is arranged on the other side outer wall of the Z-type conveying frame (2); the primary double-axis sprocket transmission structure (801) is arranged on the back side of the vertical plate (8); the primary double-axis sprocket transmission structure (801) is used to transmit the rotational power of the reduction motor (4) and the bevel gear transmission assembly (9) to one of the three-axis sprocket transmission assemblies (13) and one of the roller-type chip removal assemblies (11).

5. The self-propelled corn harvesting conveyor according to claim 4, characterized in that: The bevel gear transmission assembly (9) comprises a driving bevel gear (903) mounted on the end of the output shaft of the reduction motor (4), a connecting shaft (901) rotatably mounted on the outer wall of one side of the Z-shaped conveying frame (2) through a bearing seat, and a driven bevel gear (902) fixed at one end of the connecting shaft (901), the driven bevel gear (902) and the driving bevel gear (903) meshing with each other, and the other end of the connecting shaft (901) penetrates the outside of the vertical plate (8) and is connected to the primary double-axis sprocket transmission structure (801).

6. The self-propelled corn harvesting conveyor according to claim 5, characterized in that: The roller-drawn chip removal assembly (11) comprises support plates (1001) fixed on both sides of the back of the rib-column grid-shaped grille (10), a gap portion (1002) arranged between the two support plates (1001), and a long rubber roller shaft (1101) rotatably mounted between the two support plates (1001); a plurality of rubber strips (1102) are fixed to the outer peripheral surface of the long rubber roller shaft (1101); the rubber strips (1102) contact the rib-column grid-shaped grille (10) when rotating around the long rubber roller shaft (1101); one end of the long rubber roller shaft (1101) sequentially penetrates the support plate (1001), the three-axis sprocket transmission assembly (13), and the outside of the vertical plate (8), and is connected to each other through a primary double-axis sprocket transmission structure (801) and one end of a connecting shaft (901).

7. A self-propelled corn harvesting conveyor according to claim 6, characterized in that: The three-axis sprocket transmission assembly (13) comprises a transmission shaft (1301) rotatably mounted on the top of the auxiliary frame (7) via a bearing seat, a driven short shaft (1302) rotatably mounted on the top of the vertical plate (8), and a secondary sprocket speed-increasing transmission structure (1303) mounted between the transmission shaft (1301), the driven short shaft (1302), and the long rubber roller shaft (1101); the driven short shaft (1302) drives another three-axis sprocket transmission assembly (13) to operate via a gear driver (14).

8. The self-propelled corn harvesting conveyor according to claim 7, characterized in that: A diagonal support arm (1304) is fixed to one side of the surface of the vertical plate (8), and a tensioning sprocket (1305) for pressing against the secondary sprocket speed-increasing transmission structure (1303) is rotatably mounted on one end of the surface of the diagonal support arm (1304).

9. The self-propelled corn harvesting conveyor according to claim 7, characterized in that: The sprocket-coupled wind-driven impurity removal assembly (12) comprises a hollow oblique arm (1201) obliquely fixed at the top of the auxiliary frame (7), a secondary shaft (1202) rotatably mounted at one end inside the hollow oblique arm (1201), and an axial flow fan (1205) fixed at one side of the top of the harvesting box (5), one end of the secondary shaft (1202) being mounted with a pulley transmission structure (1204) for driving the input shaft of the axial flow fan (1205) to rotate, and the other end of the secondary shaft (1202) being mounted with a three-stage sprocket transmission structure (1203) for interconnecting with one end of a transmission shaft (1301).

10. A self-propelled corn harvesting conveying method, comprising the self-propelled corn harvesting conveying device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S101: Check the lubricating oil condition of the bevel gear dual-zone drive unit to ensure smooth power transmission, then check the cleanliness of the rib-column grid grille (10) to ensure that there are no debris blocking the passage of the fruit ears, and at the same time check the tension and wear condition of the Z-belt conveyor (3); S102: The staff starts the self-propelled corn harvester and the bevel gear dual-zone drive unit to work. As the self-propelled corn harvester moves, the corn ears are collected into the harvesting box (5) under the action of the ear picking roller and the ear picking plate. The Z-belt conveyor (3) sends the ears upward at an angle. At this time, the broken corn stems and leaves and straw foreign matter enter the harvesting box (5) together with the corn ears. S103: The bevel gear dual-zone drive unit and the three-axis sprocket transmission assembly (13) drive the sprocket-coupled wind-powered impurity removal assembly (12) to work, and the sprocket-coupled wind-powered impurity removal assembly (12) generates a strong airflow to blow away the impurities at the entrance of the harvest box (5), and at the same time, the roller-type chip removal assembly (11) promptly discharges the impurities that are not removed by the wind from the chip removal window (501) to ensure that the impurities are discharged smoothly; S104: After the harvest is completed, the staff needs to clean the device, including cleaning the remaining fruit ears and debris in the harvest box (5) to keep the device clean and tidy. At the same time, check the wear of each component, including the Z-belt conveyor (3) and the sprocket-coupled wind-powered debris removal assembly (12) and the roller-pulled chip removal assembly (11), and perform necessary maintenance and care to ensure that it is in good condition when used next time.

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