A corn harvester

Abstract

The present invention discloses a corn harvester for both ear and stalk harvesting. The harvester comprises a vehicle body, a header frame mounted at the front of the vehicle body, an elevator connected to the ear output end of the header frame, and a chopping device connected to the straw output end of the header frame. A feeding system and a stalk-pulling and ear-removing unit are mounted on the header frame. The feeding system includes a clamping chain. The stalk-pulling and ear-removing unit includes a pair of feeding rollers mounted on the front side of the top of a stalk-pulling and ear-removing gear box and a pair of ear-removing and stalk-pulling rollers corresponding to the feeding rollers and mounted on the rear side of the top of the stalk-pulling and ear-removing gear box. The upper portion of the feeding rollers is connected to a clamping sprocket that cooperates with the clamping chain. The present invention has the beneficial effects of enhancing conveying stability and harvesting efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of agricultural machinery technology, in particular to a kind of ear stem collection corn harvester. BACKGROUND

[0002] The existing corn harvester is provided with clamping chain and stalk roller arranged in sequence from front to back, and the feeding and clamping are mostly transmitted by using a clamping chain respectively on the left and right of the conveying channel, the stalk roller is connected with ear picking roller, and the clamping chain wheel for driving the clamping chain is installed between the stalk roller and the ear picking roller. When in use, the two clamping chain wheels drive the corn stalk to move backward, when the corn stalk reaches the clamping ear picking roller, the stalk roller and the ear picking roller continue to pull the corn stalk, and the corn ear is picked off. The function of the elevator in the corn harvester is to convey the corn ear picked off by the header to the granary or the peeling machine.

[0003] The above technical solution has the following disadvantages: 1, the stalk roller and the clamping chain wheel are coaxially arranged, the corn stalk is easy to be driven by the clamping chain to move forward again after passing around the stalk roller, which is easy to cause the stalk roller and the clamping chain to be wound by the leaf. SUMMARY

[0004] The purpose of the present application is to provide a kind of ear stem collection corn harvester to improve the conveying stability and harvesting efficiency.

[0005] To achieve the above purpose, the present application discloses a kind of ear stem collection corn harvester, which comprises a vehicle body, a header frame is installed at the front of the vehicle body, an elevator is connected to the fruit ear output end of the header frame, a chopping device is connected to the straw output end of the header frame, a feeding system and a stalk picking unit are installed on the header frame, the feeding system comprises a clamping chain, the stalk picking unit comprises a pair of feeding rollers installed on the top front side of the stalk picking gear box and a pair of ear picking stalk rollers corresponding to the feeding rollers and installed on the top rear side of the stalk picking gear box, and the upper part of the feeding roller is connected with a clamping chain wheel matched with the clamping chain.

[0006] The clamping chain is wound on the clamping chain wheel, and the clamping chain wheel is located in front of the stalk roller. When in use, the rotating directions of the two stalk rollers are opposite, the rotating directions of the two feeding rollers are opposite, the clamping chain drives the corn stalk to move backward, when the corn stalk reaches the clamping chain wheel, the stalk roller and the ear picking roller continue to pull the corn stalk, and the corn ear is picked off, the clamping chain continues to rotate, and the conveying of the next corn stalk is completed. The corn stalk will not pass around the stalk roller under the driving of the clamping chain, which reduces the probability of failure of the stalk roller caused by being wound by the leaf, and improves the production efficiency.

[0007] Preferably, the feeding system further comprises a poking feeding mechanism and a stalk clamping mechanism, the poking feeding mechanism comprises a poking frame and a poking chain rotatably mounted on the poking frame, the stalk clamping mechanism comprises a clamping frame and a clamping chain rotatably mounted on the clamping frame, the rear end of the poking chain and the front end of the clamping chain are in transmission connection, the outer side of the poking chain is provided with poking fingers for poking stalks, the poking fingers are perpendicular to the outer poking link plates and the inner poking link plates of the poking chain and the conveying direction of the stalks;

[0008] The front end of the poking frame is provided with a poking tension pulley, and the front end of the poking chain is mounted on the poking tension pulley.

[0009] In the prior art, the feeding and clamping of the stalks by the ear-and-stalk corn harvester are mostly performed by using one conveying chain on the left and right sides of the conveying channel, but this conveying mode has low clamping stability and is prone to blockage during the conveying of the stalks, which is troublesome and laborious to clean, thus reducing the harvesting efficiency, increasing the failure rate of the harvester and raising the maintenance cost.

[0010] The conveying chain is divided into the front poking chain for feeding and the rear clamping chain for clamping, the poking chain feeds the stalks to the clamping chain, and then the clamping chain conveys the stalks rearward, which enhances the stability of the conveying of the stalks and effectively reduces the blockage during the conveying of the stalks; in addition, the setting of the poking fingers can poke the stalks into the clamping channel, so that the clamping chain can clamp the stalks, thus enhancing the conveying stability and the harvesting efficiency.

[0011] Preferably, the upper and lower ends of the poking fingers are fixedly connected to the two opposite outer poking link plates or the two opposite inner poking link plates of the poking chain, which simplifies the structure of the poking chain.

[0012] Preferably, the poking fingers and the two outer poking link plates or the two inner poking link plates connecting the upper and lower ends of the poking fingers are integrally formed, which enhances the stability of the structure of the poking chain and further increases the stability of the feeding of the stalks.

[0013] Preferably, the poking fingers are arranged on the outer poking link plates and one poking finger is arranged every pair of outer poking link plates, or the poking fingers are arranged on the inner poking link plates and one poking finger is arranged every pair of inner poking link plates.

[0014] Preferably, a plurality of gear-shaped clamping teeth are arranged on the outer side of the clamping chain between the clamping inner link plates and the clamping outer link plates. The arrangement of the gear-shaped clamping teeth can enhance the clamping stability of the stalks and further prevent the blockage during the conveying of the stalks.

[0015] Preferably, a rotating tower is arranged at the joint of the poking frame and the clamping frame, and the front end of the clamping chain and the rear end of the poking chain are mounted on the rotating tower. The clamping chain transmits power to the poking chain through the rotating tower.

[0016] Preferably, the raking frame is provided with a raking sprocket.

[0017] Preferably, a feeding channel is formed between every two raking feeding mechanisms, and a clamping channel is formed between every two stalk clamping mechanisms, the left and right opening widths of the front end of the clamping channel are greater than the left and right opening widths of the middle and rear of the clamping channel, so as to facilitate the smooth entry of the stalks from the feeding channel into the clamping channel.

[0018] Preferably, the left and right clamping frames between the adjacent two clamping channels correspond to a raking frame.

[0019] In the prior art, the left and right clamping frames between the adjacent two clamping channels are each connected with a raking frame in front, and the structural stability is poor.

[0020] The raking frame in front of the left and right clamping frames between the adjacent two clamping channels is set as an integrated type, thereby enhancing the structural stability.

[0021] Preferably, the left and right clamping frames between the adjacent two clamping channels are each connected with a raking frame in front, and the structural stability is poor.

[0022] Preferably, the left and right clamping frames between the adjacent two clamping channels correspond to a raking frame.

[0023] Preferably, the adjusting rod comprises two steel pipes at the two ends and a threaded rod in the middle, the ends of the two steel pipes close to the threaded rod are respectively fixedly connected with two fixed nuts with opposite screw directions, the two ends of the threaded rod are respectively provided with threads matched with the threads of the two fixed nuts, and the two ends of the threaded rod respectively extend into the two steel pipes through the two fixed nuts. By adjusting the length of the adjusting rod by rotating the threaded rod, the opening and closing degree between the end raking frame and the adjacent raking frame can be adjusted, and the cutting pair of the corn harvesting header can be adjusted, which is convenient to operate and simple in structure.

[0024] Preferably, the threaded rod is provided with two movable nuts with the same screw direction as the threads of the two fixed nuts at positions close to the two fixed nuts, for fixing the adjusting rod, so as to ensure the stability between the threaded rod and the fixed nuts at the two ends thereof. The middle of the threaded rod is provided with a clamping groove convenient for adjusting by a wrench, that is, the threads on the threaded rod at the two ends of the clamping groove are opposite in screw direction.

[0025] Preferably, the clamping frame is provided with a tensioning wheel set, the tensioning wheel set is located on the side of the clamping frame away from the clamping channel, and in the two tensioning wheel sets between the left and right adjacent two clamping channels, the installation position of one of the two tensioning wheel sets is relatively backward compared with the other, so that the two tensioning wheel sets do not interfere with each other when adjusting the tension, and the tensioning stroke is increased.

[0026] Preferably, the tensioning wheel set comprises a clamping tensioning wheel and a clamping compression wheel, the clamping tensioning wheel and the clamping compression wheel are connected through a connecting plate, the clamping compression wheel is rotatably installed on the clamping frame, and the clamping tensioning wheel is hingedly connected to the clamping frame through an adjusting device.

[0027] Preferably, the front end of the clamping frame is provided with a front mounting shaft and a rear mounting shaft from front to back, the connection parts of the clamping frame and the connected reel frame and the end reel frame are all provided with a tower wheel mounting shaft in a straight line with the front mounting shaft and the rear mounting shaft, and the front mounting shaft, the rear mounting shaft and the tower wheel mounting shaft are connected through a strip-shaped plate, so as to increase the installation strength between the clamping frame and the connected reel frame or end reel frame.

[0028] Preferably, in the two tensioning wheel sets between the left and right adjacent two clamping channels, the adjusting device of one of the two tensioning wheel sets is hingedly connected to the clamping frame through the front mounting shaft, and the adjusting device of the other tensioning wheel set is hingedly connected to the clamping frame through the rear mounting shaft.

[0029] Preferably, the front end of the end reel frame is connected with a reel tensioning wheel through an elastic adjusting device, and the left and right ends of the front end of the reel frame are respectively connected with two reel tensioning wheels through elastic adjusting devices.

[0030] Preferably, a plurality of chain positioning mechanisms matched with the clamping chains are arranged on the adjacent sides of the two clamping frames, and the chain positioning mechanism comprises an anti-skid wheel and a limiting wheel arranged on the clamping frame.

[0031] At present, the stem clamping device is usually installed on the header frame of the harvester, and when the feeding amount of the stems increases during the operation of the device, the gap between the clamping chains working with each other increases, which leads to poor clamping effect of the clamping chains and slipping phenomenon, and the failure rate of the existing clamping and conveying mechanism is high, which wastes a lot of manpower and material resources during maintenance.

[0032] The plurality of anti-skid wheels and limiting wheels arranged on the two clamping frames enable the stems to move in an S-shaped path in the clamping channel, which can effectively ensure the clamping effect during the conveying of the stems and avoid the slipping phenomenon between the stems and the clamping chains during the conveying.

[0033] Preferably, the anti-skid wheels and the limiting wheels are spaced apart in the front-to-back direction of the clamping frame, and the spacing between the anti-skid wheels and the side of the clamping frame is greater than the distance between the limiting wheels and the side of the clamping frame. The limiting wheels close to the side of the clamping frame can facilitate support of the clamping chain, while the anti-skid wheels away from the side of the clamping frame can facilitate the formation of a depression in the clamping chain when the stem enters, thereby playing an anti-skid role during the process of clamping and conveying the stem.

[0034] Preferably, the anti-slip wheels and the limiting wheels on the two clamping frames are symmetrically arranged along the clamping channel formed by the two clamping frames, and the central axes of the anti-slip wheels and the limiting wheels are located in the same vertical plane.

[0035] Preferably, the distance between the rotating tower pulley and the chain positioning mechanism is greater than the distance between the anti-skid wheel and the limiting wheel, and bolts for fixing the clamping frame are provided between the anti-skid wheel and the limiting wheel near the clamping sprocket. The chain positioning mechanism is spaced a certain distance from the rotating tower pulley to facilitate the entry of the stems into the clamping channel, and the bolts provided between the anti-skid wheel and the limiting wheel at the end of the clamping channel reduce the distance between the anti-skid wheel and the limiting wheel, thereby facilitating the conveyance of the stems and preventing the stems from getting stuck at the end of the clamping channel.

[0036] Preferably, the diameter of the anti-slip wheel is smaller than the diameter of the limiting wheel.

[0037] Preferably, it also includes a straw divider, and a straw support rack hinged on the harvesting table frame is provided above the straw divider, and a plurality of straw support rods are provided on the straw support rack above the straw divider, and the distance between the front ends of two adjacent straw support rods is adapted to the distance between two adjacent straw dividers below the straw support rods.

[0038] At present, the straw supporting device is usually installed on the harvester's header frame, but most of the straw supporting devices are bent and processed as a whole and there is a problem that the straw dividers on both sides cannot be adjusted left and right, so the adaptability is poor when harvesting crops with different row spacings; since the existing straw dividers have no locking mechanism, there is a problem of large vibration during harvesting. At the same time, the straw dividers that are bent and formed as a whole also have problems such as large size and high transportation cost. Moreover, when the staff conducts maintenance, the disassembly and assembly process is also relatively cumbersome, which wastes a lot of manpower and material resources.

[0039] It is convenient for transportation and maintenance. By designing the straw divider and the straw support rod as a split structure, the device has low production and transportation costs and is easy and quick to open. The straw divider is clamped on the feeding system through a clamping mechanism, which can effectively ensure the stability of the straw divider during harvesting. The straw support rod hinged above the straw divider can adapt to the harvesting of crops with different growth conditions.

[0040] Preferably, the straw divider is a shell formed by multiple covering plates, which is closed on all sides and open at the bottom. The straw divider includes a protective shell and a straw dividing shell connected to the front end of the protective shell and clamped on the feeding system.

[0041] Preferably, the protective shell comprises a horizontally arranged first upper cover plate, first side cover plates arranged on the left and right sides of the first upper cover plate in an inclined manner, and a rear cover plate vertically connected to the rear end of the first upper cover plate and connected to the first side cover plates on the left and right sides; the first side cover plates are arranged on the outer side of the first upper cover plate in an inclined manner, and the plate body near the lower end of the first side cover plate is arranged in a vertical direction and perpendicular to the plane on which the first upper cover plate is located; the divider shell comprises a second upper cover plate arranged at the front end of the first upper cover plate and inclined downward, and a rectangular plate arranged at the front end of the second upper cover plate in a vertical direction; second side cover plates are arranged on the left and right sides of the second cover plate and connected to the first side cover plates; the lower end of the second inclined cover plate is flush with the lower end of the rectangular plate. By arranging the divider into a semi-cone-shaped shell, the divider can be quickly divided during operation. The rectangular plate arranged at the front end of the divider can cooperate with the divider tensioning wheel arranged at the front end of the divider frame to push away the stems at the end to make the stems quickly enter the feeding channel and avoid falling down.

[0042] A connecting hinge is arranged on the body near the rear end of the protective shell, and a clamping mechanism is arranged in the divider shell and connected to the divider frame; the rear end of the divider is hinged to the clamping frame through the connecting hinge, and the front part of the divider is clamped to the divider frame through the clamping mechanism, which facilitates the disassembly and assembly of the divider and facilitates the detection and maintenance of the staff.

[0043] Preferably, the clamping mechanism comprises a clamping rod arranged horizontally in the divider shell and a clamping seat arranged on the divider frame; the clamping seat comprises a connecting base fixed to the divider frame and a clamping buckle fixed to one side of the connecting base and cooperating with the clamping rod; a positioning plate is arranged on the clamping rod, a clamping groove cooperating with the positioning plate is arranged on the upper end surface of the connecting base, and the clamping opening of the clamping buckle extends vertically upward and out of the upper end surface of the connecting base. By clamping the positioning plate and the clamping rod into the clamping groove and the clamping buckle respectively, the disassembly and assembly of the divider are more convenient and fast, and the clamping mechanism has a supporting and limiting effect to effectively prevent the divider from swinging up and down.

[0044] Preferably, the dividers near the left and right ends of the header frame comprise a protective shell hinged to the side plate of the header frame and a divider shell hinged to the front end of the protective shell and clamped to the front end of the feeding system; rubber plates are arranged on the left and right side plates of the divider shell and cover the gap between the protective shell and the divider shell. The dividers near the left and right ends of the header frame are adjustable, and the front end of the divider located at the left and right ends of the header frame is arranged in a hinged structure, which can fully cooperate with the end divider frame and facilitate the straw located at the left and right ends of the header frame to enter the feeding channel of the header.

[0045] Preferably, the rear end face of the divider is provided with a guard plate, the lower bottom edge of the guard plate is flush with the lower bottom edge of the rear end face of the divider, and the outer end edges of the guard plates of the two adjacent dividers are attached to each other. By matching the guard plates of the two adjacent dividers, the dropped ear stalks after harvesting can be avoided.

[0046] Preferably, the left and right side plates of the header frame are provided with hinge seats, and the two ends of the lifting frame are hingedly connected to the hinge seats of the left and right side plates of the header frame. The hinge seat includes a support seat fixed to the inner end face of the side plate of the header frame, and two hinge plates are arranged on the support seat in a spaced manner. The two hinge plates are provided with corresponding hinge holes. The lifting frame is a rod body with two downwardly curved ends, and the rod body is provided with through holes corresponding to the hinge holes. Bolts are installed in the through holes and the hinge holes to hinge the rod body to the lifting frame. The lifting frame is a rod body with two downwardly curved ends, so that the lifting frame can have a certain height and facilitate the installation of the lifting rod.

[0047] Preferably, the lifting rod is a rod body with a downwardly curved front end, and the front end portion of the rod body is attached to the top surface of the divider. The rear end of the lifting rod is fixedly connected to the lifting frame. The setting direction of the lifting rod is adapted to the clamping channel of the header frame. A lifting limiting rod is arranged between two adjacent lifting rods located directly above the clamping channel. By matching the lifting rod with the curved front end and the divider, the lodging of the ear stalks during harvesting can be avoided, and the ear stalks can be conveniently fed into the input channel during cutting.

[0048] Preferably, the ear picking and stalk pulling roller includes an upper ear picking roller and a lower stalk pulling roller. The top of one of the ear picking rollers is drivingly connected to a reversing gear box.

[0049] Two vertically arranged stalk pulling roller shafts are rotatably connected to the stalk picking and pulling gear box. The stalk pulling rollers are installed on the stalk pulling roller shafts. The two stalk pulling roller shafts are arranged left and right. Two vertically arranged feed rollers are rotatably connected to the front of the stalk picking and pulling gear box. The feed rollers are installed on the feed roller shafts. The two feed roller shafts are arranged left and right. The two stalk pulling roller shafts are drivingly connected, and the two feed roller shafts are drivingly connected. One of the stalk pulling roller shafts and one of the feed roller shafts are drivingly connected.

[0050] Preferably, the first and second straw pulling roller gears are installed on one of the straw pulling roller shafts, the third straw pulling roller gear is installed on the other straw pulling roller shaft and meshes with the second straw pulling roller gear, the second and first feeding roller gears are installed on one of the feeding roller shafts, the third feeding roller gear is installed on the other feeding roller shaft and meshes with the second feeding roller gear, and the straw pulling roller shaft with the first straw pulling roller gear is arranged diagonally to the feeding roller shaft with the first feeding roller gear. In use, the power is transmitted from the ear picking roller reversing gear box to the first ear picking roller to drive the first ear picking roller and the first straw pulling roller shaft to rotate, the first straw pulling roller shaft drives the second straw pulling roller shaft to rotate through the second and third straw pulling roller gears, the first straw pulling roller shaft drives the first feeding roller shaft to rotate through the first and second feeding roller gears, and the first feeding roller shaft drives the second feeding roller shaft to rotate through the second and third feeding roller gears. This structure is compact and reliable in transmission.

[0051] Preferably, the first and second straw pulling roller gears are arranged at the lower part of the inside of the straw and ear picking gear box, the second and third straw pulling roller gears are arranged at the upper part of the inside of the straw and ear picking gear box, and the second and third feeding roller gears are arranged at the middle part of the inside of the straw and ear picking gear box. In use, the gears in the straw and ear picking gear box are arranged in three layers to reduce the risk of mutual interference and improve the space utilization. This structure is compact and reliable in transmission.

[0052] Preferably, the height of the upper end of the feeding roller shaft is greater than the height of the upper end of the straw pulling roller shaft. In use, the feeding roller shaft is used to install the feeding roller, and the length of the feeding roller shaft is relatively long to improve the stability of the feeding roller because the upper end of the feeding roller is arranged in a suspended manner. The straw pulling roller shaft is used to install the straw pulling roller and the ear picking roller, and the straw pulling roller shaft can be relatively short because the upper end of the ear picking roller is arranged in a suspended manner.

[0053] Preferably, the straw and ear picking gear box is provided with a feeding roller shaft sleeve that is sleeved on the feeding roller shaft, and the feeding roller shaft is rotatably connected to the upper end of the feeding roller shaft sleeve. In use, the feeding roller is sleeved on the feeding roller shaft, and the feeding roller shaft sleeve can improve the stability of the feeding roller shaft and the feeding roller.

[0054] Preferably, the upper end of the straw pulling roller shaft has a spline shaft structure, and the upper end of the feeding roller shaft has a spline shaft structure. In use, the spline shaft structure facilitates installation.

[0055] Preferably, the upper end of the straw and ear picking gear box is open, and the upper end of the straw and ear picking gear box is provided with a straw and ear picking gear box cover in a detachable manner. This facilitates the manufacture and installation of the straw and ear picking gear box.

[0056] Preferably, the lower end of the stalk pulling roller is rotatably connected with the bottom of the stalk pulling and ear picking gear box, the stalk pulling roller passes through the gear box cover and is rotatably connected with the gear box cover, the lower end of the feeding roller is rotatably connected with the bottom of the gear box, and the feeding roller passes through the gear box cover and is rotatably connected with the gear box cover. It is convenient to manufacture and install the stalk pulling and ear picking gear box.

[0057] Preferably, the distance between the central axes of the two stalk pulling rollers is smaller than the distance between the central axes of the two feeding rollers, and the width of the gap between the two stalk pulling rollers is smaller than the width of the gap between the two feeding rollers. When in use, it is convenient to transport the corn stalks.

[0058] Preferably, the shape of the stalk pulling and ear picking gear box is rectangular, and the four corners of the gear box are rounded. It is convenient to install the gears.

[0059] Preferably, the side of the feeding roller is connected with a plurality of feeding bars extending in the vertical direction, and the outer side of the feeding bar is provided with a plurality of protruding teeth. When in use, the feeding bars push the corn stalks to the rear of the feeding roller with the rotation of the feeding roller.

[0060] Preferably, the diameter of the upper end of the stalk pulling roller is larger than the diameter of the lower end, the side of the stalk pulling roller is connected with a plurality of stalk pulling bars extending in the vertical direction, and the outer side of the stalk pulling bar is vertically arranged. When in use, the gap between the lower ends of the two stalk pulling rollers is large, which facilitates the feeding of the corn stalks and reduces the blockage.

[0061] Preferably, the shape of the cross section of the side of the ear picking roller is octagonal, the side of the ear picking roller is connected with a plurality of first ear picking bars extending in the vertical direction. When in use, the first ear picking bars push the corn stalks to the rear of the ear picking roller with the rotation of the ear picking roller, which facilitates the separation of the corn ears and the corn stalks.

[0062] Preferably, the shape of the cross section of the first ear picking bar is circular. Preferably, the first ear picking bar is made of threaded round steel, which improves the friction between the ear picking roller and the corn stalks, and the first ear picking bar pushes the corn stalks to the rear of the ear picking roller, which facilitates the separation of the corn ears and the corn stalks.

[0063] Preferably, the number of the first ear picking bars is four, and the four first ear picking bars are arranged one-to-one corresponding to the four corners of the side of the ear picking roller. When in use, the first ear picking bars cooperate with the ear picking roller to push the corn stalks left and right, which facilitates the separation of the corn ears and the corn stalks.

[0064] Preferably, the shape of the cross section of the side of the ear picking roller is circular, the side of the ear picking roller is connected with a plurality of first ear picking bars, the shape of the first ear picking bar is U-shaped, the open end of the ear picking roller faces the direction of rotation of the ear picking roller, and the plurality of first ear picking bars are distributed in a spiral shape. When in use, the first ear picking bars push the corn stalks to the rear of the ear picking roller with the rotation of the ear picking roller, which facilitates the separation of the corn ears and the corn stalks.

[0065] Preferably, the length of the lower side of the first earing ridge is greater than the length of the upper side of the first earing ridge. In use, the friction between the earing roller and the corn stalk is increased, and the first earing ridge pushes the corn stalk to the rear of the earing roller, facilitating the separation of the corn ear and the corn stalk.

[0066] Preferably, the end of the lower side of the first earing ridge is inclined downward. In use, the friction between the earing roller and the corn stalk is increased, and the first earing ridge pushes the corn stalk to the rear of the earing roller, facilitating the separation of the corn ear and the corn stalk.

[0067] Preferably, the shape of the cross section of the side of the earing roller is circular, and the side of the earing roller is connected to the second earing ridge in a spiral shape. In use, as the earing roller rotates, the second earing ridge pushes the corn stalk to the rear of the earing roller, facilitating the separation of the corn ear and the corn stalk.

[0068] Preferably, the side of the earing roller is also connected to a plurality of first earing ridges, the first earing ridges extend in the vertical direction, and the first earing ridges are provided with a gap for the second earing ridges to pass through. In use, the friction between the earing roller and the corn stalk is increased, and the first earing ridges and the second earing ridges push the corn stalk to the rear of the earing roller, facilitating the separation of the corn ear and the corn stalk.

[0069] Preferably, the shape of the cross section of the first earing ridge and the second earing ridge is circular. Preferably, the first earing ridge is made of threaded round steel, which increases the friction between the earing roller and the corn stalk, and the first earing ridges and the second earing ridges push the corn stalk to the rear of the earing roller, facilitating the separation of the corn ear and the corn stalk.

[0070] Preferably, the pulling stem roller and the earing roller are hollow structures. This facilitates manufacturing and installation.

[0071] Preferably, the lower end of the pulling stem roller has a spline groove structure, and the upper end of the earing roller has a spline shaft structure. This facilitates manufacturing and installation.

[0072] Preferably, the chaffer roller is rotatably installed on the cutterbar frame, and the chaffer roller is located below the feeding system. The outer wall of the chaffer roller is provided with two groups of spiral scrapers, and the two groups of spiral scrapers are opposite in rotation direction and extend spirally along the axial direction of the chaffer roller.

[0073] The chaffer roller is installed on the rear side of the lower cutter, the front side of the ear conveying belt, and the lower side of the straw chain. After the corn stalk is cut by the lower cutter, it is transported backward through the straw chain. In this process, the chaffer roller rotates continuously under the drive of the power input mechanism and comes into contact with the corn stalk. The spiral scrapers on the chaffer roller can clean the mud and weeds adhered to the lower end of the corn stalk. The two groups of spiral scrapers on the chaffer roller can push the weeds on the corn stalk to both sides, ensuring the cleanliness of the chaffer roller and avoiding the entanglement of weeds.

[0074] In order to further improve the cleaning ability of the impurity removing roller, a transverse rib scraper is arranged on the outer wall of the impurity removing roller, and the transverse rib scraper extends along the axial direction of the impurity removing roller. The transverse rib scraper can scrape off the soil adhered to the straw, and effectively clean the straw.

[0075] Preferably, a plurality of transverse rib scrapers are arranged, and the plurality of transverse rib scrapers are arranged in a circumferential direction of the impurity removing roller at intervals. The cleaning ability of the impurity removing roller for the adhered soil can be further improved.

[0076] Preferably, the end of the spiral scraper and / or the transverse rib scraper away from the impurity removing roller is provided with a tooth. The tooth can play a role of pulling the weeds, and facilitate the pulling down of the weeds wound on the impurity removing roller.

[0077] Regarding the arrangement form of the tooth, the tooth is arranged in a wave shape. The tooth is in a triangular shape, and a plurality of teeth are arranged.

[0078] In order to avoid the winding of the weeds on the impurity removing roller, a fixed knife is further arranged. The fixed knife is installed on the header frame, and is arranged at the rear side of the impurity removing roller and spaced apart from the impurity removing roller. The fixed knife is spaced apart from the impurity removing roller by 2 to 3 mm. The impurity removing roller is used in cooperation with the fixed knife, so as to prevent the winding of the weeds on the impurity removing roller, and ensure the cleaning of the impurity removing roller.

[0079] Regarding the specific structure of the fixed knife, the fixed knife extends along the axial direction of the impurity removing roller, and the blade of the fixed knife faces the impurity removing roller.

[0080] Regarding the specific structure of the spiral scraper, the spiral scraper is composed of a plurality of blade assemblies. The plurality of blade assemblies are sequentially and abuttingly arranged in a spiral shape, and the abutting positions of the blade assemblies are located at the intersection of the two spiral scrapers. The arrangement facilitates the forming of the spiral scraper. When the spiral scraper is damaged, only the damaged blade assembly needs to be replaced, so that the maintenance of the impurity removing roller is facilitated.

[0081] Regarding the mounting structure of the impurity removing roller, the two ends of the impurity removing roller are provided with mounting shafts, and the impurity removing roller is rotatably mounted on the header frame through the mounting shafts.

[0082] Preferably, a chain harrow is arranged in the elevator. The chain harrow includes a plurality of conveying chains arranged in parallel. The elevator includes an upper shell and a lower shell. The lower end of the lower shell is connected to the header frame, and the upper end of the lower shell is hingedly connected to the lower end of the upper shell.

[0083] With the above structure, the lower shell and the upper shell are hingedly connected. The lower shell can rise and fall with the header frame, and is away from the ground. Therefore, the lower shell and the ground will not collide when the header frame is lowered for operation. Moreover, the foldable ear lifting device is used to transport crops, and the chain harrow is in a segmental form, so that the ear is not easily damaged, and the stems will not be blocked.

[0084] Preferably, the hinge point of the upper shell and the lower shell is located at the inner side of the chain harrow. The hinge structure is avoided from interfering with the chain harrow.

[0085] Preferably, a transverse hinge shaft is installed in the upper shell, a first shaft sleeve is fixedly connected to the upper shell and a second shaft sleeve is fixedly connected to the lower shell. The first shaft sleeve and the second shaft sleeve are staggered to improve the stability of the lower shell's swing.

[0086] Preferably, a first reinforcing tube is fixedly connected to the upper shell, and a first sleeve is installed on the first reinforcing tube; a second reinforcing tube is fixedly connected to the lower shell, and a second sleeve is installed on the second reinforcing tube, so as to strengthen the connection between the upper shell and the lower shell and the hinge structure to avoid deformation of the connection between the upper shell and the lower shell; a first middle partition is fixedly connected to the upper shell, and the lower end of the first middle partition is connected to the first reinforcing tube; a second middle partition is fixedly connected to the lower shell, and the upper end of the second middle partition is connected to the second reinforcing tube.

[0087] Preferably, both ends of the hinge shaft pass through the upper housing, one end of the hinge shaft is fixed with a mounting plate, and the mounting plate is detachably mounted on the upper housing. The mounting plate is used to limit the axial position of the hinge shaft, making replacement and maintenance of the hinge shaft easy to operate.

[0088] Preferably, first guide rails for guiding the return conveyor chain are installed on both sides of the upper shell. The first guide rails can guide the return conveyor chain passing through the first reinforcement tube to prevent the return conveyor chain from being blocked by the first reinforcement tube and getting stuck at the first reinforcement tube.

[0089] Preferably, second guide rails are installed on both sides of the lower housing and are located above the lifting and conveying chain. The second guide rails can guide the lifting and conveying chain to prevent the lifting and conveying chain from vibrating during the conveying process, causing the conveying chain to bounce upward and affect the conveying of crops.

[0090] Preferably, a track is installed on the second guide rail to press against the top of the lifting and conveying chain. The arrangement of the track can buffer the movement of the lifting and conveying chain, avoid wear of the lifting and conveying chain and the second guide rail, and increase the service life of the second guide rail.

[0091] Preferably, elevator connecting plates are hingedly connected to both sides of the lower end of the lower housing, and the other ends of the elevator connecting plates are hingedly connected to the header frame. The provision of the elevator connecting plates allows the lower housing to move up and down with the header frame via the elevator connecting plates, thus providing a certain range of motion for the lower housing and preventing the lower housing from being unable to connect to the header frame due to manufacturing errors.

[0092] Preferably, the lower shell is arranged to have a gradually tapered opening toward the upper shell, so that the material can be fed in more smoothly and the accumulation of the material can be avoided.

[0093] Preferably, the chopping device comprises a chopping housing comprising a feeding end and an output end at the front and rear ends respectively, characterized in that a chopping cutter shaft is arranged in the chopping housing near the output end, and a front upper feeding roller and a rear upper feeding roller are arranged in the chopping housing in sequence from front to back above the chopping cutter shaft, and a front lower feeding roller, a middle lower feeding roller and a rear lower feeding roller are arranged in the chopping housing in sequence from front to back below the chopping cutter shaft. The middle lower feeding roller arranged between the front lower feeding roller and the rear lower feeding roller can effectively prevent the straw from being blocked during conveying, thereby ensuring the smooth passage of the straw through the chopping channel and further ensuring the conveying efficiency of the straw.

[0094] Preferably, the distance between the front upper feeding roller and the front lower feeding roller is greater than the distance between the rear upper feeding roller and the rear lower feeding roller, that is, the opening between the front upper feeding roller and the front lower feeding roller is greater than the opening between the rear upper feeding roller and the rear lower feeding roller, thereby ensuring the smooth entry of the straw into the chopping channel.

[0095] Preferably, the rear upper feeding roller is a floating roller, which can ensure the smoothness of the chopping channel during straw conveying when the straw feeding amount is large, thereby effectively preventing the occurrence of blocking phenomenon.

[0096] Preferably, the chopping cutter shaft is provided with a plurality of chopping knife groups for chopping the straw.

[0097] Preferably, the chopping cutter shaft is drivingly connected to the front upper feeding roller, the front upper feeding roller is drivingly connected to the rear upper feeding roller and the middle lower feeding roller, the middle lower feeding roller is drivingly connected to the front lower feeding roller and the rear lower feeding roller, and the front upper feeding roller and the middle lower feeding roller rotate in opposite directions.

[0098] Preferably, the driving mode of the front upper feeding roller and the middle lower feeding roller is chain transmission, the middle lower feeding roller is provided with a reversing shaft, and the two sprockets provided at the ends of the front upper feeding roller and the reversing shaft are located inside the chain to form a forward driving connection, and the sprocket at the end of the middle lower feeding roller is located outside the chain to form a reverse driving connection with the front upper feeding roller.

[0099] Preferably, the chopping device further comprises a feeding transition shaft drivingly connected to the chopping cutter shaft and the front upper feeding roller, that is, the chopping cutter shaft is drivingly connected to the front upper feeding roller through the feeding transition shaft, so that the power transmission is more stable and reliable.

[0100] Preferably, a fixed knife is arranged behind the rear lower feeding roller to remove sundries wrapped or adhered to the upper surface of the rear lower feeding roller, and the fixed knife at the rear side cooperates with the chopping knife groups on the chopping cutter shaft to cut the straw.

[0101] Preferably, an upwardly open hanging groove is arranged above the front of the chopping shell, and a header hanging rod is arranged in the hanging groove.

[0102] Preferably, a chopping connecting rod is arranged below the front of the chopping shell, and a header connecting rod is detachably connected to the chopping connecting rod. The header connecting rod is fixedly connected to the header frame, that is, the front of the chopping shell is connected to the header frame through the detachably connected chopping connecting rod and header connecting rod. The fastening connection structure is simple and convenient to operate.

[0103] In summary, the beneficial effects of the present application are: 1. The clamping chain is wound on the clamping sprocket, and the clamping sprocket is located in front of the straw pulling roller. During use, the rotation directions of the two straw pulling rollers are opposite, and the rotation directions of the two feeding rollers are opposite. The clamping chain drives the corn stalks to move backward. When the corn stalks reach the clamping sprocket, the straw pulling roller and the ear picking roller continue to pull the corn stalks and pick the corn ears. The clamping chain continues to rotate to complete the transportation of the next corn stalk. The corn stalks will not be wound around the straw pulling roller by the clamping chain, reducing the probability of failure of the straw pulling roller due to being wound by the leaf, and improving the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0104] Figure 1 is a structure schematic diagram of a corn harvester for ear and stem harvesting according to the present application;

[0105] Figure 2 is a structure schematic diagram of a harvesting and chopping assembly in a corn harvester for ear and stem harvesting according to the present application;

[0106] Figure 3 is a structure schematic diagram of a header in a corn harvester for ear and stem harvesting according to the present application;

[0107] Figure 4 is a top view structure schematic diagram of a header in a corn harvester for ear and stem harvesting according to the present application;

[0108] Figure 5 is Figure 4 is an enlarged structure schematic diagram of a local part A in the corn harvester for ear and stem harvesting according to the present application;

[0109] Figure 6 is Figure 4 is an enlarged structure schematic diagram of a local part B in the corn harvester for ear and stem harvesting according to the present application;

[0110] Figure 7 is a structure schematic diagram of a corn harvester for ear and stem harvesting according to the present application;

[0111] Figure 8 is Figure 7 is a path schematic diagram of the corn harvester for ear and stem harvesting according to the present application;

[0112] Figure 9 is a structural schematic diagram of a chain in a corn harvester of the present application;

[0113] Figure 10 is a structural schematic diagram of a chain in a corn harvester of the present application;

[0114] Figure 11 is a structural schematic diagram of a chain in a corn harvester of the present application;

[0115] Figure 12 is a structural schematic diagram of a chain in a corn harvester of the present application;

[0116] Figure 13 is a structural schematic diagram of a chain in a corn harvester of the present application;

[0117] Figure 14 is a structural schematic diagram of a chain in a corn harvester of the present application;

[0118] Figure 15 is a structural schematic diagram of a chain in a corn harvester of the present application;

[0119] Figure 16 is a structural schematic diagram of a chain in a corn harvester of the present application;

[0120] Figure 17 is a structural schematic diagram of a chain in a corn harvester of the present application;

[0121] Figure 18 is a structural schematic diagram of a chain in a corn harvester of the present application;

[0122] Figure 19 is a structural schematic diagram of a chain in a corn harvester of the present application;

[0123] Figure 20 is a structural schematic diagram of a chain in a corn harvester of the present application; Figure 19 is a structural schematic diagram of a chain in a corn harvester of the present application;

[0124] Figure 21 is a structural schematic diagram of a chain in a corn harvester of the present application; Figure 19 is a structural schematic diagram of a chain in a corn harvester of the present application;

[0125] Figure 22 is a structural schematic diagram of a chain in a corn harvester of the present application; Figure 19 is a structural schematic diagram of a chain in a corn harvester of the present application;

[0126] Figure 23 is a structural schematic diagram of a chain in a corn harvester of the present application;

[0127] Figure 24 is a front view structural schematic diagram of the stalk pulling and ear picking gear box in the corn harvester of the present application;

[0128] Figure 25 is a top view structural schematic diagram of the stalk pulling and ear picking gear box in the corn harvester of the present application;

[0129] Figure 26 is a front view structural schematic diagram of the stalk pulling and ear picking gear box in the corn harvester of the present application; Figure 25 is a structural schematic diagram of the middle section E-E;

[0130] Figure 27 is a structural schematic diagram of the middle section F-F; Figure 25

[0131] Figure 28 is a front view structural schematic diagram of the inside of the stalk pulling and ear picking gear box in the corn harvester of the present application;

[0132] Figure 29 is a front view structural schematic diagram of the inside of the stalk pulling and ear picking gear box in the corn harvester of the present application;

[0133] Figure 30 is a top view structural schematic diagram of the inside of the stalk pulling and ear picking gear box in the corn harvester of the present application;

[0134] Figure 31 is a structural schematic diagram of the middle section G-G; Figure 30

[0135] is a structural schematic diagram of the middle section H-H; Figure 32 Figure 30

[0136] Figure 33 is a front view structural schematic diagram of the stalk pulling and ear picking gear box in the corn harvester of the present application;

[0137] Figure 34 is a sectional structural schematic diagram of the ear picking roller in the corn harvester of the present application;

[0138] Figure 35 is a sectional structural schematic diagram of the stalk pulling roller in the corn harvester of the present application;

[0139] Figure 36 is a front view structural schematic diagram of the stalk pulling and ear picking gear box in the corn harvester of the present application;

[0140] Figure 37 is a sectional structural schematic diagram of the ear picking roller in the corn harvester of the present application; ​​​

[0141] Figure 38 is a sectional view of the pulling roller of the corn harvester of the present application in another embodiment of the present application;

[0142] Figure 39 is a perspective view of the ear-pulling roller and the pulling roller of the corn harvester of the present application in another embodiment of the present application;

[0143] Figure 40 is a sectional view of the ear-pulling roller of the corn harvester of the present application in another embodiment of the present application;

[0144] Figure 41 is a sectional view of the pulling roller of the corn harvester of the present application in another embodiment of the present application;

[0145] Figure 42 is a sectional view of the pulling roller of the corn harvester of the present application in another embodiment of the present application;

[0146] Figure 43 is a sectional view of the pulling roller of the corn harvester of the present application in another embodiment of the present application;

[0147] Figure 44 is a sectional view of the pulling roller of the corn harvester of the present application in another embodiment of the present application; Figure 43 is an enlarged view of the partial I of the corn harvester of the present application;

[0148] Figure 45 is a perspective view of the corn harvester of the present application; Figure 42 is a perspective view of the corn harvester of the present application;

[0149] Figure 46 is a perspective view of the corn harvester of the present application; Figure 43 is a perspective view of the corn harvester of the present application;

[0150] Figure 47 is a perspective view of the corn harvester of the present application in another embodiment of the present application;

[0151] Figure 48 is a perspective view of the corn harvester of the present application in another embodiment of the present application;

[0152] Figure 49 is a perspective view of the corn harvester of the present application in another embodiment of the present application;

[0153] Figure 50 is a perspective view of the corn harvester of the present application in another embodiment of the present application; Figure 49 is an enlarged view of the partial J of the corn harvester of the present application;

[0154] Figure 51 is a perspective view of the corn harvester of the present application in another embodiment of the present application;

[0155] Figure 52Is a kind of invention is the stereogram of chopping device in ear and stem corn harvester of this application, does not show header hitch bar and header connecting rod;

[0156] Figure 53 Is the transmission route diagram of left end in the chopping device of a kind of ear and stem corn harvester of this application;

[0157] Figure 54 Is the schematic diagram of chopping device connected on the header of a kind of ear and stem corn harvester of this application in the harvester;

[0158] Figure 55 Is the structural schematic diagram of elevator in a kind of ear and stem corn harvester of this application;

[0159] Figure 56 Is the internal structure schematic diagram of elevator in a kind of ear and stem corn harvester of this application;

[0160] Figure 57 Is the overhead schematic diagram of hinge shaft in the elevator of a kind of ear and stem corn harvester of this application;

[0161] Figure 58 Is the structural schematic diagram of lower shell and header frame connection of elevator in a kind of ear and stem corn harvester of this application;

[0162] Figure 59 Is Figure 55 The enlarged structural schematic diagram of partial K in it;

[0163] Figure 60 Is Figure 55 The enlarged structural schematic diagram of partial L in it;

[0164] Figure 61 Is Figure 56 The enlarged structural schematic diagram of partial M in it;

[0165] Figure 62 Is Figure 56 The enlarged structural schematic diagram of partial N in it.

[0166] In the figure:

[0167] 101, vehicle body: 102, straw throwing cylinder: 103, cab: 104, ear box: 105, straw box:

[0168] 2, header: 201, header frame: 202, ear plate: 211, header hitch bar; 212, header connecting rod;

[0169] 3. Chopping device: 301, chopping housing; 302, chopping knife shaft; 331, front upper feed roller; 332, rear upper feed roller; 333, front lower feed roller; 334, middle lower feed roller; 335, rear lower feed roller; 336, feed transition shaft; 337, reversing shaft; 305, fixed knife; 306, hanging groove; 307, chopping connecting rod.

[0170] 4. Elevator; 40, chain rake; 400, conveying chain; 401, ascending conveying chain; 402, return conveying chain; 41, upper housing; 410, hinged shaft; 411, first shaft sleeve; 412, first reinforcing pipe; 413, first middle partition plate; 414, mounting plate; 415, first guide rail; 42, lower housing; 420, elevator connecting plate; 421, second shaft sleeve; 422, second reinforcing pipe; 423, second middle partition plate; 424, second guide rail; 425, track;

[0171] 501, reel frame; 502, clamping frame; 503, feed channel; 504, clamping channel; 505, adjusting rod; 506, support; 508, strip plate; 511, end reel frame; 512, mounting seat; 521, anti-skid wheel; 522, limiting wheel; 551, steel pipe; 552, threaded rod; 553, fixed nut; 554, movable nut; 555, clamping groove; 571, front mounting shaft; 572, rear mounting shaft; 573, tower wheel mounting shaft; 574, elastic adjusting device;

[0172] 601, reel chain; 602, clamping chain; 611, reel finger; 612, reel outer chain plate; 613, reel inner chain plate; 621, clamping tooth; 622, clamping inner chain plate; 623, clamping outer chain plate;

[0173] 701, rotating tower wheel; 702, reel tensioning wheel; 703, clamping sprocket; 704, reel sprocket; 705, clamping tensioning wheel; 706, clamping compression wheel; 707, connecting plate; 751, adjusting device;

[0174] 801, ear picking roller; 802, ear picking roller reversing gear box; 803, first ear picking comb; 804, second ear picking comb;

[0175] 901, stem pulling roller; 902, stem pulling comb;

[0176] 1001, stem pulling and ear picking gear box body; 1002, feed roller shaft; 1003, stem pulling roller shaft; 1004, feed roller shaft sleeve; 1005, first stem pulling roller gear; 1006, second stem pulling roller gear; 1007, third stem pulling roller gear; 1008, first feed roller gear; 1009, second feed roller gear; 1010, third feed roller gear; 1011, stem pulling and ear picking gear box cover;

[0177] 1101, feeding roller; 1102, feeding flute;

[0178] 12. Debris removal roller; 1201. Spiral scraper; 1202. Cross-rib scraper; 1203. Mounting shaft; 1204. Teeth; 1205. Blade assembly;

[0179] 13. Crop supporter; 1301. Crop divider; 1302. Crop support frame; 1303. Crop support rod; 1304. Protective housing; 1305. Crop divider housing; 1306. First upper cover plate; 1307. First side cover plate; 1308. Rear cover plate; 1309. Second upper cover plate; 1310. Rectangular plate; 1311. Second side cover plate; 1312. Connecting hinge; 1313. Snap-fit ​​rod; 1314. Connecting base; 1315. Buckle; 1316. Positioning plate; 1317. Snap-fit ​​groove; 1318. Rubber sheet; 1319. Guard plate; 1320. Articulated seat; 1321. Support seat; 1322. Articulated plate; 1323. Bolt;

[0180] 14. Fixed knife;

[0181] 15. Lower the cutting knife. DETAILED DESCRIPTION

[0182] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0183] like Figures 1 to 62 As shown, a corn harvester for harvesting both ears and stalks includes 101, a cutting platform 2 is installed at the front of the vehicle body 101, the cutting platform 2 includes a cutting platform frame 201, the ear output end of the cutting platform frame 201 is connected to the elevator 4, the straw output end of the cutting platform frame 201 is connected to the chopping device 3, an ear box 104 corresponding to the output end of the elevator 4 and a straw throwing drum 102 and a straw box 105 corresponding to the output end of the chopping device 3 are installed on the vehicle body 101, and a cab 103 is installed on the upper part of the vehicle body 101.

[0184] During operation, the feeding device at the front end of the corn harvester's header 2 first transports the corn stalks backward, and then the corn is picked by multiple stem pulling and ear removing units. The picked corn enters the elevator 4 for lifting and finally falls into the ear box 104. After being processed by the multiple stem pulling and ear removing units, the picked corn stalks enter the chopping device 3 for chopping. The chopped corn stalks pass through the straw throwing cylinder 102 and finally fall into the straw box 105.

[0185] The feeding system comprises a clamping chain 602, and the stalk pulling and ear picking unit comprises a pair of feeding rollers 1101 installed on the front side of the top of the stalk pulling and ear picking gear box body 1001 and a pair of ear picking and stalk pulling rollers corresponding to the feeding rollers 1101 and installed on the rear side of the top of the stalk pulling and ear picking gear box body 1001, the upper part of the feeding roller 1101 is connected with a clamping sprocket 703 matched with the clamping chain 602, and the elevator 4 is provided with a chain rake 40, the chain rake 40 comprises a plurality of conveying chains 400 arranged in parallel, and the elevator 4 comprises an upper shell 41 and a lower shell 42, the lower end of the lower shell 42 is connected with the header frame 201, and the upper end of the lower shell 42 is hingedly connected with the lower end of the upper shell 41.

[0186] As shown in Figures 4 to 11 , the feeding system further comprises a stalk poking feeding mechanism and a stalk clamping mechanism, the stalk poking feeding mechanism comprises a stalk poking frame 501 and a stalk poking chain 601 rotatably installed on the stalk poking frame 501, the stalk clamping mechanism comprises a clamping frame 502, the clamping chain 602 is rotatably installed on the clamping frame 502, the rear end of the stalk poking chain 601 is in transmission connection with the front end of the clamping chain 602, the outer side of the stalk poking chain 601 is provided with a stalk poking finger 611 for poking the stalk, and the stalk poking finger 611 is perpendicular to the conveying direction of the stalk.

[0187] The front end of the stalk poking frame 501 is provided with a stalk poking tension sprocket 702, and the front end of the stalk poking chain 601 is installed on the stalk poking tension sprocket 702.

[0188] The front and rear Figure 11 of the transmission route of the stalk are taken as the reference, the stalk is transported from the front end to the rear end of the feeding system, Figure 11 the arrow direction is from front to rear. The intersection of the stalk poking frame 501 and the clamping frame 502 is provided with a rotating tower wheel 701, the front end of the clamping chain 602 and the rear end of the stalk poking chain 601 are both installed on the rotating tower wheel 701, that is, the clamping chain 602 transmits power to the stalk poking chain 601 through the rotating tower wheel 701. The stalk poking frame 501 is provided with a stalk poking sprocket 704, the stalk poking chain 601 is installed on the rotating tower wheel 701, the stalk poking tension sprocket 702 and the stalk poking sprocket 704, the stalk poking tension sprocket 702 is used to make the stalk poking chain 601 in a tension state, the clamping frame 502 is provided with a clamping tension sprocket 705 and a clamping compression sprocket 706, and the clamping tension sprocket 705 and the clamping compression sprocket 706 are used to tension the clamping chain 602.

[0189] The upper and lower ends of the finger 611 are fixedly connected to the two outer chain plates 612 or the two inner chain plates 613 of the finger chain 601 respectively, and further, the finger 611 is integrally formed with the two outer chain plates 612 or the two inner chain plates 613 at the two ends thereof. The finger 611 is arranged on the outer chain plate 612 and arranged at intervals of one pair of the outer chain plates 612, or the finger 611 is arranged on the inner chain plate 613 and arranged at intervals of one pair of the inner chain plates 613.

[0190] A plurality of gear-shaped clamping teeth 621 are arranged on the clamping inner chain plate 622 and the clamping outer chain plate 623 at intervals on the outer side of the clamping chain 602. That is, the outer side of the clamping inner chain plate 622 and the clamping outer chain plate 623 is provided with the gear-shaped clamping teeth 621.

[0191] An intake channel 503 is formed between every two finger feeding mechanisms, and a clamping channel 504 is formed between every two stem clamping mechanisms. The left and right opening widths of the front end of the clamping channel 504 are greater than the left and right opening widths of the rear part of the clamping channel 504.

[0192] The left and right clamping racks 502 between the adjacent two clamping channels 504 correspond to one finger rack 501. In addition, two end finger racks 511 are arranged on the left and right sides of all the finger racks 501. The rear ends of the two end finger racks 511 are respectively rotatably connected to the front ends of the two clamping racks 502 on the leftmost side and the rightmost side. An intake channel 503 is also formed between the end finger rack 511 and the adjacent finger rack 501. The stems enter from the front end of the intake channel 503, are sequentially conveyed through the intake channel 503 and the clamping channel 504, and then are subjected to subsequent processing such as ear picking.

[0193] The adjusting rod 505 and the support 506 are further included. The adjusting rod 505 is capable of connecting the end finger rack 511 to the header rack 201, and the support 506 is fixedly connected to the header rack 201. The end finger rack 511 is provided with a mounting seat 512, and the two ends of the adjusting rod 505 are respectively hingedly connected to the mounting seat 512 and the support 506. The header rack 201 is part of a corn harvesting header. By adjusting the adjusting rod 505, the opening and closing degree between the two end finger racks 511 and the adjacent finger racks 501 can be conveniently controlled, the cutting width of the entire corn harvesting header for harvesting straw can be adjusted, and the harvesting requirements for corns with different planting distances can be met.

[0194] Specifically, the adjusting rod 505 comprises two steel pipes 551 at two ends and a threaded rod 552 in the middle, two fixed nuts 553 with opposite screw directions are fixedly connected to the ends of the two steel pipes 551 close to the threaded rod 552, the two ends of the threaded rod 552 are respectively provided with threads matched with the threads of the two fixed nuts 553, and the two ends of the threaded rod 552 respectively extend into the two steel pipes 551 through the two fixed nuts 553. Further, two movable nuts 554 with the same screw direction as the two fixed nuts 553 are arranged on the threaded rod 552 close to the two fixed nuts 553, for fixing the adjusting rod 505, and a clamping groove 555 is arranged in the middle of the threaded rod 552 for facilitating wrench adjustment. That is, the threads on the threaded rod 552 at both ends of the clamping groove 555 are opposite in screw direction. The length of the adjusting rod 505 can be adjusted by using a wrench to twist the threaded rod 552 at the clamping groove 555, and then the opening and closing degree between the end-end rake frame 511 and the rake frame 501 adjacent thereto can be adjusted. After adjusting the length of the adjusting rod 505, the movable nut is screwed to abut against the adjacent fixed nut, so that the adjusting rod 505 can be fixed, the stability between the threaded rod 552 and the fixed nuts at both ends thereof can be ensured, and the stability of the present application in conveying straw can be further improved.

[0195] The clamping frame 502 is provided with a tensioning wheel set, which is located on the side of the clamping frame 502 away from the clamping channel 504. The two tensioning wheel sets between the left and right adjacent two clamping channels 504 are asymmetrically arranged. Compared with one tensioning wheel set, the installation position of the other tensioning wheel set is relatively backward, so that the relative two tensioning wheel sets will not interfere with each other when adjusting the tensioning, and the tensioning stroke is increased. Specifically, the tensioning wheel set includes a clamping tensioning wheel 705 and a clamping compression wheel 706, the clamping tensioning wheel 705 and the clamping compression wheel 706 are connected through a connecting plate 707, the clamping compression wheel 706 is rotatably installed on the clamping frame 502, and the clamping tensioning wheel 705 is hingedly connected to the clamping frame 502 through an adjusting device 751. The front end of the clamping frame 502 is provided with a front mounting shaft 571 and a rear mounting shaft 572 from front to back, and the connection parts of the left and right two clamping frames 502 and the reel frame 501 connected thereto are all provided with two tower wheel mounting shafts 573 which are in a straight line with the front mounting shaft 571 and the rear mounting shaft 572 of the left and right two clamping frames 502; the connection part of the clamping frame 502 and the end reel frame 511 connected thereto is provided with a tower wheel mounting shaft 573 which is in a straight line with the front mounting shaft 571 and the rear mounting shaft 572. And the front mounting shaft 571, the rear mounting shaft 572 and the tower wheel mounting shaft 573 located on the same clamping frame 502 are connected through a strip-shaped plate 508, which can increase the installation strength between the clamping frame 502 and the reel frame 501 or the end reel frame 511 connected thereto. Specifically, in the two tensioning wheel sets between the left and right adjacent two clamping channels 504, the adjusting device 751 of one tensioning wheel set is hingedly connected to the clamping frame 502 through the front mounting shaft 571, and the adjusting device 751 of the other tensioning wheel set is hingedly connected to the clamping frame 502 through the rear mounting shaft 572, so that the installation position of the other tensioning wheel set is relatively backward compared with the one tensioning wheel set, which facilitates the adjustment of the tensioning of the relative two tensioning wheel sets.

[0196] The reel feeding mechanism includes a reel frame 501 and a reel chain 601 rotatably installed thereon, or an end reel frame 511 and a reel chain 601 rotatably installed thereon, and the stalk clamping mechanism includes a clamping frame 502 and a clamping chain 602 rotatably installed thereon. The connection parts of the reel frame 501 or the end reel frame 511 and the clamping frame 502 are all provided with a rotating tower wheel 701, the rotating tower wheel 701 is installed on the tower wheel mounting shaft 573, and the front end of the clamping chain 602 and the rear end of the reel chain 601 are both installed on the rotating tower wheel 701. That is, the clamping chain 602 transmits power to the reel chain 601 through the rotating tower wheel 701.

[0197] The front end of the end-end reel 511 is connected with a reel tensioning wheel 702 through an elastic adjusting device 574, and the left and right ends of the front end of the reel 501 are respectively connected with two reel tensioning wheels 702 through elastic adjusting devices 574. The rear end of the reel 501 is rotatably provided with a reel sprocket 703, and the rear end of the reel 602 is installed on the reel sprocket 703. The reel 501 is provided with two reel sprockets 704 corresponding to the two reel tensioning wheels 702, and the end-end reel 511 is provided with a reel sprocket 704. The reel chain 601 is installed on the rotating tower wheel 701, the reel tensioning wheel 702 and the reel sprocket 704, and the reel tensioning wheel 702 is used to keep the reel chain 601 in a tensioned state; the clamping tensioning wheel 705 and the clamping compression wheel 706 of the tensioning wheel set are used to tension the reel chain 602.

[0198] The adjacent side edges of the two reel 502 form a clamping channel for stem conveying; when designed, the reel 502 is in the form of a strip-shaped plate, and the two reel 502 are located in the same horizontal plane, the rear end of each reel 502 is installed on the header frame, and the number of stem clamping mechanisms can be set according to the size of the header frame; the reel 502 is provided with a driving sprocket set and a reel 602 matched with the driving sprocket set, the driving sprocket set includes a rotating tower wheel 701 installed at the front end of the reel 502, a reel sprocket 703 arranged at the rear end of the reel 502, a clamping compression wheel 706 and a clamping tensioning wheel 705 installed on the reel 502, and the clamping compression wheel 706 and the clamping tensioning wheel 705 are arranged on the side of the reel 502 away from the clamping channel, and the clamping compression wheel 706 and the clamping tensioning wheel 705 are usually arranged close to the rotating tower wheel 701, the reel 602 is installed on the driving sprocket set, so that the reel 602 forms a longer conveying channel through the cooperation of the rotating tower wheel 701 and the reel sprocket 703, and a triangular chain stable support structure is formed through the cooperation of the clamping tensioning wheel 705, the rotating tower wheel 701 and the reel sprocket 703, which can effectively ensure the stable operation of the reel 602, and the clamping compression wheel 706 and the clamping tensioning wheel 705 can effectively ensure the stability of the reel 602 when conveying stems, and facilitate adjustment of the tensioning degree of the reel 602.

[0199] A plurality of chain positioning mechanisms cooperating with the clamping chain 602 are arranged on the adjacent sides of the two clamping racks 502, and the chain positioning mechanism comprises an anti-skid wheel 521 and a limiting wheel 522 arranged on the clamping rack 502. In the design, the anti-skid wheel 521 and the limiting wheel 522 are arranged in the front-rear direction of the clamping rack 502, and the distance between the anti-skid wheel 521 and the side of the clamping rack 502 is greater than the distance between the limiting wheel 522 and the side of the clamping rack 502. Each limiting wheel 522 on the clamping rack 502 is equidistant from the side, and each anti-skid wheel 521 on the clamping rack 502 is also equidistant from the side. The limiting wheel 522 close to the side of the clamping rack 502 can support the clamping chain 602, and when the clamping chain 602 is not working, the clamping chain 602 is supported and limited by the limiting wheel 522, and the clamping chains 602 on the two clamping racks at the clamping passage are parallel. The anti-skid wheel 521 away from the side of the clamping rack 502 can facilitate the stem to enter and form a recess in the clamping chain 602, and then limit and prevent slipping during the stem clamping and conveying process.

[0200] The anti-skid wheels 521 and the limiting wheels 522 on the two clamping racks 502 are symmetrically arranged along the clamping passage formed by the two clamping racks 502, and the central axes of the anti-skid wheels 521 and the limiting wheels 522 are located in the same vertical plane. In the design, the anti-skid wheels 521 and the limiting wheels 522 on the two clamping racks are oppositely arranged, and the limiting wheel 522 on one side of the clamping rack 502 corresponds to the anti-skid wheel 521 on the other side of the clamping rack 502. This ensures that the stems move in an S-shaped path in the clamping passage, effectively ensuring the clamping effect and avoiding slipping. Of course, the diameter of the anti-skid wheel 521 is smaller than the diameter of the limiting wheel 522, which can save production cost.

[0201] The distance between the rotating tower wheel 701 and the chain positioning mechanism is greater than the distance between the anti-skid wheel 521 and the limiting wheel 522. The anti-skid wheel 521 and the limiting wheel 522 near the clamping sprocket 703 are provided with a bolt for fixing the clamping rack 502. The chain positioning mechanism and the rotating tower wheel 701 have a certain distance, which can facilitate more stems to stably enter the clamping passage. The bolt arranged between the anti-skid wheel 521 and the limiting wheel 522 at the end of the clamping passage reduces the distance between the anti-skid wheel 521 and the limiting wheel 522, which can facilitate stem conveying and avoid stem jamming at the end of the clamping passage.

[0202] The front end of the two clamping frames 502 is respectively provided with a raking frame 501, the raking frame 501 is provided with a raking chain 601, and a feeding channel 503 is formed through the two raking frames 501. When designing, the raking frame 501 provided at the front end of the two clamping frames 502 is in the shape of an expanding mouth, so that more stems can be conveniently fed, thereby controlling the stems to enter the clamping channel, and facilitating the conveying of the stems; when manufacturing, the intersection of the raking frame 501 and the clamping frame 502 is provided with a rotating tower wheel 701, the front end of the clamping chain 602 and the rear end of the raking chain 601 are both installed on the rotating tower wheel 701, and the raking chain 601 and the clamping chain 602 are controlled through the rotating tower wheel 701, so that the stable conveying of the stems is facilitated. A raking tensioning wheel 704 is arranged at the front end of the raking frame 501, and the raking frame 501 is also provided with a raking sprocket 702 matched with the raking chain 601. The raking sprocket 702, the raking tensioning wheel 704 and the rotating tower wheel 701 form a stable triangular structure, so that the raking chain 601 installed on the three is more stable when conveying the stems.

[0203] As shown in Figures 12 to 16 The raking frame 501 is provided with a raking tensioning wheel 704, and the raking frame 501 is also provided with a raking sprocket 702 matched with the raking chain 601. The raking sprocket 702, the raking tensioning wheel 704 and the rotating tower wheel 701 form a stable triangular structure, so that the raking chain 601 installed on the three is more stable when conveying the stems.

[0204] The raking frame 501 is provided with a raking tensioning wheel 704, and the raking frame 501 is also provided with a raking sprocket 702 matched with the raking chain 601. The raking sprocket 702, the raking tensioning wheel 704 and the rotating tower wheel 701 form a stable triangular structure, so that the raking chain 601 installed on the three is more stable when conveying the stems.

[0205] The protective shell 1304 comprises a horizontally arranged first upper cover plate 1306, first side cover plates 1307 arranged on the left and right sides of the first upper cover plate 1306, and a rear cover plate 1308 vertically connected to the rear end of the first upper cover plate 1306 and connected to the first side cover plates 1307 on the left and right sides. In the design, the first side cover plates 1307 are inclined to the outside of the first upper cover plate 1306, and the plate body near the lower end of the first side cover plate 1307 is arranged in the vertical direction and perpendicular to the plane where the first upper cover plate 1306 is located. The divider shell 1305 comprises a second upper cover plate 1309 arranged at the front end of the first upper cover plate 1306 and inclined downward, and a rectangular plate 1310 arranged in the vertical direction is connected to the front end of the second cover plate. The second side cover plates 1311 connected to the first side cover plates 1307 are arranged on the left and right sides of the second cover plate, and the lower end of the second inclined cover plate is flush with the lower end of the rectangular plate 1310. During installation, the divider 1301 is installed on the feeding system, and the divider tensioning wheel at the front end of the feeding system extends out of the vertical plane where the rectangular plate 1310 of the divider 1301 is located. Of course, during manufacturing, multiple reinforcing plates can be installed in the protective shell 1304 and the divider shell 1305 to ensure the stability of the shell, and the longitudinal section size of the connection end of the protective shell 1304 and the divider shell 1305 is equal and the shape is the same. By setting the divider 1301 as a semi-cone-shaped shell, it can be easily and quickly divided during work. The rectangular plate 1310 arranged at the front end of the divider 1301 can cooperate with the divider tensioning wheel arranged at the front end of the divider frame, and the divider tensioning wheel can push away the stems at the end to make the stems quickly enter the feeding channel, effectively avoiding the stems from being knocked down by the front end of the divider 1301.

[0206] The swathing frame 501 left and right of the header frame 201 is an adjustable structure, the split straw shell 1305 connected to the front end of the protective shell 1304 is divided into a hinged structure and a fixed structure, the straw distributor 1301 provided on the feeding system left and right of the header frame 201 is a swingable straw distributor 1301 hinged to the split straw shell 1305, and the straw distributor 1301 between the two swingable straw distributors 1301 is a straw distributor 1301 fixed to the front end of the protective shell 1304 of the split straw shell 1305. When designing, the straw distributor 1301 installed on the left and right sides of the header frame 201 includes a protective shell 1304 hinged to the side plate of the header frame 201 and a split straw shell 1305 hinged to the front end of the protective shell 1304 and clamped to the front end of the feeding system, and rubber plates 1318 are provided on the left and right side plates of the split straw shell 1305, which cover the gap between the protective shell 1304 and the split straw shell 1305. When manufacturing, a hinged baffle is provided on the top plate of the split straw shell 1305, and an arc-shaped opening is provided on the hinged baffle, and a hinge bolt for hinging the split straw shell 1305 to the protective shell 1304 is provided on the arc-shaped opening. By providing the rubber plates 1318, foreign matter can be prevented from entering the interior of the straw distributor 1301 through the gap between the protective shell 1304 and the split straw shell 1305, and the swathing frame 501 at the left and right ends of the header frame 201 is adjustable, and the front end of the straw distributor 1301 located at the left and right ends of the header frame 201 is provided as a hinged structure, which can fully cooperate with the end swathing frame 501, facilitating the straw located at the left and right ends of the header frame 201 to enter the feeding channel of the header. Of course, the outer end surface of the straw distributor 1301 on the feeding system at the left and right ends is flush with the outer end surface of the left and right side plates of the header frame 201 during manufacturing.

[0207] The protective shell 1304 is provided with a connecting hinge 1312 on the body near the rear end, and the divider shell 1305 is provided with a clamping mechanism connected with the divider frame 501. The rear end of the top plate of the divider 1301 at the left and right ends is provided with a connecting hinge 1312 hinged to the side plate of the header frame 201, and the rear cover plate 1308 of each divider 1301 between the two dividers 1301 is provided with a connecting hinge 1312 connected to the clamping frame 502. The dividers 1301 are hinged to the header frame 201 or the clamping frame 502 through the connecting hinges 1312, which facilitates the disassembly, maintenance and repair of the staff; the clamping mechanism includes clamping rods 1313 horizontally fixed to the left and right inner walls of the divider shell 1305 and a clamping seat provided on the divider frame 501. The clamping seat includes a connecting base 1314 fixed to the divider frame 501 and a clamping buckle 1315 fixed to one side of the connecting base 1314 and matched with the clamping rod 1313. The clamping rod 1313 is provided with a positioning plate 1316, and the upper end surface of the connecting base 1314 is provided with a clamping groove 1317 matched with the positioning plate 1316. The clamping opening of the clamping buckle 1315 extends vertically upward beyond the upper end surface of the connecting base 1314. During manufacturing, in order to stably clamp the divider 1301 on the feeding system, two clamping seats are required to cooperate with the clamping rod 1313, and two parallel positioning plates 1316 corresponding to the clamping seats are arranged on the clamping rod 1313. By clamping the positioning plate 1316 and the clamping rod 1313 into the clamping groove 1317 and the clamping buckle 1315 respectively, the divider 1301 can be disassembled and assembled more quickly and conveniently, and has a supporting and limiting effect to effectively prevent the divider 1301 from swinging up and down. The rear end surface of the divider 1301 is also provided with a guard plate 1319 made of rubber material. The lower bottom edge of the guard plate 1319 is flush with the lower bottom edge of the rear end surface of the divider 1301, and the outer end edges of the guard plates 1319 on the adjacent two dividers 1301 are in close contact. In this way, the guard plates 1319 on the adjacent two dividers 1301 can cooperate to prevent the harvested stems from falling off.

[0208] The divider 1301 is provided with a supporting frame 1302 hinged on the header frame 201, and a plurality of supporting rods 1303 are arranged above the divider 1301 and on the supporting frame 1302, the interval between the front ends of two adjacent supporting rods 1303 is adapted to the interval between two adjacent dividers 1301 below the supporting rods 1303; when designed, the hinge seats 1320 are installed on the left and right side plates of the header frame 201, and the two ends of the supporting frame 1302 are hinged on the hinge seats 1320 on the left and right side plates of the header frame 201; the hinge seat 1320 comprises a support seat 1321 fixed horizontally on the inner end face of the side plate of the header frame 201, two hinge plates 1322 are arranged on the support seat 1321 at intervals, and corresponding hinge holes are arranged on the two hinge plates 1322; the supporting frame 1302 is a rod body with two ends bent downward, the two ends of the rod body are provided with through holes corresponding to the hinge holes, the bending of the two ends of the supporting frame 1302 is not installed between the two hinge plates 1322, and the bolts 1323 hinging the two are installed in the through holes and the hinge holes; the supporting frame 1302 is hinged on the hinge seat 1320 through the bolts 1323, the supporting frame 1302 is a rod body with two ends bent downward, so that the supporting frame 1302 can have a certain height and facilitate the installation of the supporting rods 1303. The supporting rod 1303 arranged on the supporting frame 1302 is a rod body with the front end bent downward and the front end part abutting on the top surface of the divider 1301, the rear end of the supporting rod 1303 is fixedly connected to the supporting frame 1302, and the front and rear arrangement directions of the supporting rod 1303 are adapted to the clamping channel of the header frame 201; in order to facilitate the harvesting of stems, a supporting limiting rod is arranged between two adjacent supporting rods 1303 directly above the clamping channel, so that when the stems enter the conveying channel, the supporting rod 1303 above the stems forms a supporting path with the front end opening larger and the rear end opening smaller. Through the cooperation of the front-end-bent supporting rod 1303 and the divider 1301, the lodging of the ears and stems during harvesting can be avoided, and the ears and stems can enter the conveying channel conveniently during cutting.

[0209] As shown in Figures 17 to 41 the ear picking and stem pulling roller comprises an upper ear picking roller 801 and a lower stem pulling roller 901, and the top of one ear picking roller 801 is in transmission connection with a reversing gear box 802 providing power for it;

[0210] The two vertical puller shafts 1003 are rotatably connected to the puller gear box 1001, the puller rollers 901 are installed on the puller shafts 1003, and the two puller shafts 1003 are arranged left and right. The two vertical feed roller shafts 1002 are also rotatably connected to the puller gear box 1001 and located in front of the puller shafts 1003. The feed rollers 1101 are installed on the feed roller shafts 1002, and the two feed roller shafts 1002 are arranged left and right. The two puller shafts 1003 are transmission connected, and the two feed roller shafts 1002 are transmission connected. One of the puller shafts 1003 and one of the feed roller shafts 1002 are transmission connected.

[0211] One of the puller shafts 1003 is provided with a first puller roller gear 1005 and a second puller roller gear 1006, and the other puller shaft 1003 is provided with a third puller roller gear 1007 engaged with the second puller roller gear 1006. One of the feed roller shafts 1002 is provided with a second feed roller gear 1009 and a first feed roller gear 1008 engaged with the first puller roller gear 1005, and the other feed roller shaft 1002 is provided with a third feed roller gear 1010 engaged with the second feed roller gear 1009. The puller shaft 1003 with the first puller roller gear 1005 is diagonally arranged with the feed roller shaft 1002 with the first feed roller gear 1008. In use, the ear picker reversing gear box 802 transmits power to the first ear picker roller 801 to drive the first ear picker roller 801 and the first puller shaft 1003 to rotate. The first puller shaft 1003 drives the second puller shaft 1003 to rotate through the second puller roller gear 1006 and the third puller roller gear 1007. The first puller shaft 1003 drives the first feed roller shaft 1002 to rotate through the first puller roller gear 1005 and the first feed roller gear 1008. The first feed roller shaft 1002 drives the second feed roller shaft 1002 to rotate through the second feed roller gear 1009 and the third feed roller gear 1010. This structure is compact and reliable in transmission.

[0212] The first puller roller gear 1005 and the first feed roller gear 1008 are located in the lower part of the inside of the puller gear box 1001, the second puller roller gear 1006 and the third puller roller gear 1007 are located in the upper part of the inside of the puller gear box 1001, and the second feed roller gear 1009 and the third feed roller gear 1010 are located in the middle part of the inside of the puller gear box 1001. In use, the gears in the puller gear box 1001 are arranged in three layers, reducing the risk of mutual interference and improving space utilization. This structure is compact and reliable in transmission.

[0213] The height of the upper end of the feeding roller shaft 1002 is greater than the height of the upper end of the pulling roller shaft 1003. In use, the feeding roller shaft 1002 is used to install the feeding roller 1101, and because the upper end of the feeding roller 1101 is suspended, the length of the feeding roller shaft 1002 is longer, which is conducive to improving the stability of the feeding roller 1101; the pulling roller shaft 1003 is used to install the pulling roller 901 and the ear picking roller 801, and because the upper end of the ear picking roller 801 is suspended, the pulling roller shaft 1003 can be shorter.

[0214] The pulling and ear picking gear box 1001 is provided with a feeding roller shaft sleeve 1004 sleeved on the feeding roller shaft 1002, and the feeding roller shaft 1002 is rotationally connected with the upper end of the feeding roller shaft sleeve 1004. In use, the feeding roller 1101 is sleeved on the feeding roller shaft 1002, and the feeding roller shaft sleeve 1004 can improve the stability of the feeding roller shaft 1002 and the feeding roller 1101.

[0215] The upper end of the pulling roller shaft 1003 has a spline shaft structure, and the upper end of the feeding roller shaft 1002 has a spline shaft structure. In use, it is convenient to install.

[0216] The upper end of the pulling and ear picking gear box 1001 is open, and the upper end of the pulling and ear picking gear box 1001 is detachably provided with a pulling and ear picking gear box cover 1011. It is convenient to manufacture and install the pulling and ear picking gear box 1001.

[0217] The lower end of the pulling roller shaft 1003 is rotationally connected with the bottom of the pulling and ear picking gear box 1001, the pulling roller shaft 1003 passes through the pulling and ear picking gear box cover 1011 and is rotationally connected with the pulling and ear picking gear box cover 1011, the lower end of the feeding roller shaft 1002 is rotationally connected with the bottom of the pulling and ear picking gear box 1001, and the feeding roller shaft 1002 passes through the pulling and ear picking gear box cover 1011 and is rotationally connected with the pulling and ear picking gear box cover 1011. It is convenient to manufacture and install the pulling and ear picking gear box 1001.

[0218] The distance between the central axes of the two pulling roller shafts 1003 is less than the distance between the central axes of the two feeding roller shafts 1002; the width of the gap between the two pulling rollers 901 is less than the width of the gap between the two feeding rollers 1101. In use, it is convenient to transport corn stalks.

[0219] The shape of the pulling and ear picking gear box 1001 is rectangular, and the four corners of the pulling and ear picking gear box 1001 have rounded corners. It is convenient to install various gears.

[0220] The feeding roller 1101 is connected with a plurality of feeding bars 1102 on the side, the feeding bars 1102 extend in the vertical direction, and the outer side of the feeding bars 1102 has a plurality of protrusions. In use, with the rotation of the feeding roller 1101, the feeding bars 1102 push the corn stalks to the rear of the feeding roller 1101.

[0221] The diameter of the upper end of the stalk pulling roller 901 is larger than that of the lower end, and a plurality of stalk pulling bars 902 are connected to the side of the stalk pulling roller 901 and extend in the vertical direction, and the outer side of the stalk pulling bar 902 is vertically arranged. In use, the gap between the lower ends of the two stalk pulling rollers 901 is larger, facilitating the feeding of corn stalks and reducing blockage.

[0222] In an embodiment: the shape of the cross section of the side of the ear picking roller 801 is octagonal, and a plurality of first ear picking bars 803 are connected to the side of the ear picking roller 801 and extend in the vertical direction. In use, as the ear picking roller 801 rotates, the first ear picking bar 803 pushes the corn stalks to the rear of the ear picking roller 801, facilitating the separation of corn ears and corn stalks.

[0223] The cross section of the first ear picking bar 803 is circular. Preferably, the first ear picking bar 803 is made of threaded round steel, which improves the friction between the ear picking roller 801 and the corn stalks, and the first ear picking bar 803 pushes the corn stalks to the rear of the ear picking roller 801, facilitating the separation of corn ears and corn stalks.

[0224] The number of first ear picking bars 803 is four, and the four first ear picking bars 803 are arranged in correspondence with the four corners of the side of the ear picking roller 801. In use, the first ear picking bar 803 cooperates with the ear picking roller 801 to push and extrude the corn stalks left and right, facilitating the separation of corn ears and corn stalks.

[0225] In another embodiment: the shape of the cross section of the side of the ear picking roller 801 is circular, and a plurality of first ear picking bars 803 are connected to the side of the ear picking roller 801, and the shape of the first ear picking bar 803 is U-shaped, the open end of the ear picking roller 801 faces the direction of rotation of the ear picking roller 801, and a plurality of first ear picking bars 803 are distributed in a spiral shape. In use, as the ear picking roller 801 rotates, the first ear picking bar 803 pushes the corn stalks to the rear of the ear picking roller 801, facilitating the separation of corn ears and corn stalks.

[0226] The length of the lower side of the first ear picking bar 803 is greater than the length of the upper side of the first ear picking bar 803. In use, the friction between the ear picking roller 801 and the corn stalks is improved, and the first ear picking bar 803 pushes the corn stalks to the rear of the ear picking roller 801, facilitating the separation of corn ears and corn stalks.

[0227] The end of the lower side of the first ear picking bar 803 is inclined downward. In use, the friction between the ear picking roller 801 and the corn stalks is improved, and the first ear picking bar 803 pushes the corn stalks to the rear of the ear picking roller 801, facilitating the separation of corn ears and corn stalks.

[0228] In another embodiment, the side cross-section of the ear picking roller 801 is circular, and the side of the ear picking roller 801 is connected to a spiral second ear picking ridge 804. When in use, as the ear picking roller 801 rotates, the second ear picking ridge 804 pushes the corn stalks to the rear of the ear picking roller 801, making it easier to separate the corn ears from the corn stalks.

[0229] The side of the picking roller 801 is also connected to a plurality of first picking ridges 803. The first picking ridges 803 extend in the vertical direction and have notches that allow the second picking ridges 804 to pass through. When in use, the friction between the picking roller 801 and the corn stalks is increased, and the first picking ridges 803 and second picking ridges 804 push the corn stalks to the rear of the picking roller 801, making it easier to separate the corn ears from the corn stalks.

[0230] The cross-sections of the first and second ear-picking ridges 803 and 804 are circular. Preferably, the first ear-picking ridges 803 are made of threaded round steel to increase the friction between the ear-picking roller 801 and the corn stalks. The first and second ear-picking ridges 803 and 804 push the corn stalks to the rear of the ear-picking roller 801, making it easier to separate the corn ears from the corn stalks.

[0231] The stem pulling roller 901 and the ear picking roller 801 are hollow structures, which are convenient for manufacturing and installation.

[0232] The lower end of the stem pulling roller 901 has a spline groove structure, and the upper end of the ear picking roller 801 has a spline shaft structure, which is convenient for manufacturing and installation.

[0233] like Figures 42 to 50 As shown, a cleaning roller 12 is rotatably mounted on the cutting table frame 201. The cleaning roller 12 is located below the feeding system. Two sets of spiral scrapers 1201 are provided on the outer wall of the cleaning roller 12. The two sets of spiral scrapers 1201 rotate in opposite directions and extend spirally along the axial direction of the cleaning roller 12. Figure 1 , Attachment Figure 8 The dust collecting roller 12 is installed on the rear side of the lower cutter 15, the front side of the cob conveyor belt, and the lower side of the straw chain. When the corn stalks are cut by the lower cutter 15, they are transported backwards via the straw chain. During this process, the dust collecting roller 12 driven by the power input mechanism rotates continuously and comes into contact with the straw. The spiral scraper 1201 on the dust collecting roller 12 can clean the dirt and weeds stuck on the lower end of the corn stalks. The dust collecting roller 12 is provided with two sets of spiral scrapers 1201 with opposite rotation directions, which can push the weeds on the straw to both sides to ensure its own cleaning and prevent the weeder from being entangled in weeds.

[0234] In order to further improve the cleaning ability of the impurity removal roller 12, a transverse rib scraper 1202 is provided on the outer wall of the impurity removal roller 12. The transverse rib scraper 1202 extends along the axial direction of the impurity removal roller 12. The transverse rib scraper 1202 can scrape off the dirt stuck on the straw and effectively clean the straw. Figure 4 , the horizontal rib scraper 1202 is provided with a plurality of horizontal rib scrapers 1202 which are arranged in a circumferential interval around the impurity removing roller 12, and the cleaning capacity of the impurity removing roller 12 for sticky soil can be further improved. Figure 5 The end of the spiral scraper 1201 and / or the horizontal rib scraper 1202 away from the impurity removing roller 12 is provided with a tooth 1204. The tooth 1204 can play a role of pulling the weeds, and the weeds wound on the impurity removing roller 12 can be pulled down. As to the arrangement form of the tooth 1204, the tooth 1204 is arranged in a wave shape. The tooth 1204 is in a triangular shape, and the tooth 1204 is provided with a plurality of teeth.

[0235] In order to avoid the winding of weeds on the impurity removing roller 12, a fixed knife 14 is further included, the fixed knife 14 is installed on the header frame 201, and the fixed knife 14 is located at the rear side of the impurity removing roller 12 and is arranged in an interval with the impurity removing roller 12. The fixed knife 14 is spaced apart from the impurity removing roller 12 by 2-3 mm, and the impurity removing roller 12 cooperates with the fixed knife 14 to use, which can prevent the impurity removing roller 12 from winding the weeds and ensure the self-cleaning. As to the specific structure of the fixed knife 14, the fixed knife 14 extends along the axial direction of the impurity removing roller 12, and the blade part of the fixed knife 14 faces the impurity removing roller 12.

[0236] As to the specific structure of the spiral scraper 1201, the spiral scraper 1201 is composed of a plurality of blade assemblies 1205, the plurality of blade assemblies 1205 are sequentially butt-jointed and arranged in a spiral shape, and the butt-jointed part of the blade assembly 1205 is located at the intersection of the two groups of spiral scrapers 1201. This arrangement facilitates the molding of the spiral scraper 1201, and when the spiral scraper 1201 is damaged, only the damaged blade assembly 1205 needs to be replaced, which is convenient for the maintenance of the impurity removing roller.

[0237] As to the mounting structure of the impurity removing roller 12, the two ends of the impurity removing roller 12 are provided with mounting shafts 1203, and the impurity removing roller 12 is rotatably mounted on the header frame 201 through the mounting shafts 1203.

[0238] As shown in FIG. 1, the header 2 is provided with an impurity removing device 1, and the impurity removing device 1 is arranged at the lower end of the header 2.

[0239] Figures 55 to 62 As shown in FIG. 1, the header 2 is provided with an impurity removing device 1, and the impurity removing device 1 is arranged at the lower end of the header 2. As shown in FIG. 1, the header 2 is provided with an impurity removing device 1, and the impurity removing device 1 is arranged at the lower end of the header 2.

[0240] Through the hinged connection of the lower shell 42 and the upper shell 41, the lower shell 42 can be raised and lowered with the header frame 201 during machine operation, and the lower shell 42 is folded upward around the hinge of the upper shell 41, away from the ground, so that the lower shell 42 and the ground do not collide when the header frame 201 is lowered for operation, and the foldable ear assembly is used to transport crops, which is not easy to damage the ear, and the stem will not be blocked.

[0241] The lower end of the lower shell 42 is hinged on both sides with an elevator connecting plate 420, and the other end of the elevator connecting plate 420 is hinged with the header frame 201. Specifically, the header frame 201 is welded on both sides with an ear plate 202, the ear plate 202 is provided with a first circular hole, the elevator connecting plate 420 is provided with a second circular hole corresponding to the first circular hole, the other end of the elevator connecting plate 420 is provided with a third circular hole, and the lower shell 42 is provided with a fourth circular hole corresponding to the third circular hole. The first pin shaft passes through the first circular hole and the second circular hole and is locked with a split pin, and the second pin shaft passes through the third circular hole and the fourth circular hole and is locked with a split pin. The setting of the elevator connecting plate 420 makes the lower shell 42 move up and down with the header frame 201 through the elevator connecting plate 420, so that the lower shell 42 has a certain range of motion, avoids the processing error that the lower shell 42 cannot be connected with the header frame 201, reduces the installation difficulty of the lower shell 42 and the header frame 201, saves the processing cost and labor cost.

[0242] The hinge point of the upper shell 41 and the lower shell 42 is located on the inner side of the chain rake 40, avoiding the interference of the hinge structure and the chain rake 40, and the hinge shaft 410 is installed in the upper shell 41. The first shaft sleeve 411 is fixed on the upper shell 41 and sleeved on the hinge shaft 410, and the second shaft sleeve 421 is fixed on the lower shell 42 and sleeved on the hinge shaft 410. The first shaft sleeve 411 and the second shaft sleeve 421 are staggered, which can improve the stability of the swing of the lower shell 42.

[0243] As a preferred case of the embodiment, the first reinforcing pipe 412 is fixedly connected in the upper shell 41, the first shaft sleeve 411 is installed on the first reinforcing pipe 412, the second reinforcing pipe 422 is fixedly connected in the lower shell 42, and the second shaft sleeve 421 is installed on the second reinforcing pipe 422. Specifically, the first shaft sleeve 411 is welded and connected on the first reinforcing pipe 412, the second shaft sleeve 421 is welded and connected on the second reinforcing pipe 422, the first partition plate 413 is fixedly connected in the upper shell 41, the lower end of the first partition plate 413 is overlapped on the first reinforcing pipe 412 and welded and connected therewith, the second partition plate 423 is fixedly connected in the lower shell 42, the lower end of the second partition plate 423 is overlapped on the second reinforcing pipe 422 and welded and connected therewith. The first reinforcing pipe 412 and the second reinforcing pipe 422 reinforce the connection of the upper shell 41, the lower shell 42 and the partition plate and the hinge structure, avoiding deformation of the connection of the upper shell 41 and the lower shell 42.

[0244] In order to make the replacement and maintenance of the hinge shaft 410 more convenient, the two ends of the hinge shaft 410 are penetrated through the upper shell 41, the two ends of the hinge shaft 410 are penetrated through the upper shell 41, one end of the hinge shaft 410 is fixedly connected with the mounting plate 414, and the mounting plate 414 is detachably installed on the upper shell 41. Specifically, one end of the hinge shaft 410 is welded and connected with the mounting plate 414, and the upper shell 41 is welded and connected with a screw sleeve, and the end of the mounting plate 414 away from the hinge shaft 410 is screwed on the screw sleeve by bolts. When the hinge shaft 410 is installed, the hinge shaft 410 is penetrated through the first shaft sleeve 411 and the second shaft sleeve 421, and then the mounting plate 414 is locked on the upper shell 41, so that the replacement and maintenance of the hinge shaft 410 are easy to operate.

[0245] As a preferred case of the embodiment, the first guide rail 415 guiding the running of the return conveying chain 402 is installed on both sides of the upper shell 41. Preferably, the first guide rail 415 is arranged in a Z shape, the top of the first guide rail 415 is welded and connected with the bottom surface of the first partition plate 413, the bottom of the first guide rail 415 is welded and connected with the bottom of the first reinforcing pipe 412, and the middle part of the first guide rail 415 is arranged downward and inclined toward the first reinforcing pipe 412. When the chain harrow 40 runs to the first reinforcing pipe 412, the first guide rail 415 guides the return conveying chain 402 passing through the first reinforcing pipe 412, avoiding that the return conveying chain 402 is blocked by the first reinforcing pipe 412 and stuck at the first reinforcing pipe 412, ensuring smooth running of the chain harrow 40, avoiding machine failure and improving work efficiency.

[0246] As a preferred embodiment of this embodiment, second guide rails 424 are mounted on both sides of the lower housing 42, positioned above the lifting and conveying chains 401. These second guide rails 424 are L-shaped, with their tops bolted to the lower housing 42. When the chain rake 40 conveys material upward from the lower housing 42, the second guide rails 424 limit the height of the conveying chains 400, guiding the lifting and conveying chains 401. This prevents vibration during conveyance, which could cause the chains 401 to bounce upward and affect crop transport.

[0247] To prevent wear on the lifting and conveying chain 401 and the second guide rail 424 and to extend the service life of the second guide rail 424, a track 425 is mounted on the second guide rail 424, which presses against the top of the lifting and conveying chain 401. The track 425 can be mounted on the lower housing 42 or on the second guide rail 424. The material of the track 425 can be set to nylon, polyurethane, etc., and there is no limitation on the material of the track 425 in this embodiment. The provision of the track 425 can cushion the movement of the lifting and conveying chain 401 and prevent the conveying chain 400 from bumping during operation.

[0248] As a preferred example of this embodiment, the lower shell 42 is configured to have a gradually tapered diameter toward the upper shell 41. When the material is transported in the lower shell 42, the material is fed more smoothly and the accumulation of the material is avoided.

[0249] like Figures 51 to 54 As shown, the shredder device 3 includes a shredder shell 301, which includes a feeding end and an output end respectively located at the front and rear ends. It is characterized in that a shredder blade shaft 302 is installed in the shredder shell 301 near the output end, and a front upper feeding roller 331 and a rear upper feeding roller 332 installed in the shredder shell 301 are provided in sequence from front to rear on the front upper part of the shredder blade shaft 302, and a front lower feeding roller 333, a middle lower feeding roller 334 and a rear lower feeding roller 335 installed in the shredder shell 301 are provided in sequence from front to rear on the front lower part of the shredder blade shaft 302. Both ends of the chopper shaft 302, front upper feed roller 331, rear upper feed roller 332, front lower feed roller 333, middle lower feed roller 334, and rear lower feed roller 335 extend outside the chopper housing 301 and connect to drive wheels. In this embodiment, the power transmission method is a chain drive, that is, the drive wheel is a sprocket. Of course, the transmission method can also be other transmission methods known in the art and will not be described in detail here. A fixed blade 305 is provided behind the rear lower feed roller 335. Several chopping blade groups for chopping straw are mounted on the chopper shaft 302. The specific structure of the chopping blade groups is known in the art and will not be described in detail here.

[0250] A chopping channel is formed between the front upper feeding roller 331 and the rear upper feeding roller 332 located above and the front lower feeding roller 333, the middle lower feeding roller 334 and the rear lower feeding roller 335 located below. Figure 1 The arrow in the figure indicates the direction from the feed end at the front end of the shredder housing 301 through the shredder channel to the shredder blade shaft 302 for shredding, and then discharged through the output end at the rear end of the shredder housing 301. Furthermore, the distance between the front upper feed roller 331 and the front lower feed roller 333 is greater than the distance between the rear upper feed roller 332 and the rear lower feed roller 335. That is, the opening between the front upper feed roller 331 and the front lower feed roller 333 is greater than the opening between the rear upper feed roller 332 and the rear lower feed roller 335, ensuring that straw can smoothly enter and pass through the shredder channel. The rear upper feed roller 332 is preferably a floating roller. When the straw feed amount is large, it can ensure that the shredder channel is smooth during straw transportation and effectively prevent the occurrence of blockage.

[0251] The shredder blade shaft 302 is connected to a power mechanism that provides power thereto. The shredder blade shaft 302 is connected to the front upper feed roller 331, which is in turn connected to the rear upper feed roller 332 and the middle lower feed roller 334, which is in turn connected to the front lower feed roller 333 and the rear lower feed roller 335. The front upper feed roller 331 and the middle lower feed roller 334 rotate in opposite directions. Specifically, Figure 2 As shown, a reversing shaft 337 is provided below the middle and lower feed rollers 334. The front upper feed roller 331 is connected to the reversing shaft 337 in a forward transmission direction, while the reversing shaft 337 is connected to the middle and lower feed rollers 334 in a reverse transmission direction. In this embodiment, the front upper feed roller 331 and the middle and lower feed rollers 334 are connected by a chain drive. The two sprockets provided at the ends of the front upper feed roller 331 and the reversing shaft 337 are both located on the inner side of the chain, forming a forward transmission connection. The sprocket at the end of the middle and lower feed roller 334 is located on the outer side of the chain, forming a reverse transmission connection with the front upper feed roller 331. Of course, the transmission connection between the front upper feed roller 331 and the middle and lower feed rollers 334 is not limited to a chain drive. Other transmission connection methods known in the art can also be used to enable the front upper feed roller 331 and the middle and lower feed rollers 334 to rotate in opposite directions.

[0252] Furthermore, the present invention also includes a feed transition shaft 336 that is respectively connected to the chopper shaft 302 and the front upper feed roller 331, that is, the chopper shaft 302 is connected to the front upper feed roller 331 through the feed transition shaft 336, so that the power transmission is more stable and reliable.

[0253] The cutting shell 301 is provided with an upwardly open hanging groove 306 in front upper side, and a cutting table hanging rod 211 is placed in the hanging groove 306. The cutting table hanging rod 211 is fixedly connected to the cutting table frame 201, that is, the cutting shell 301 is hung on the cutting table frame 201 through the hanging groove 306 and the cutting table hanging rod 211. A cutting connecting rod 307 is arranged in front lower side of the cutting shell 301, and a cutting table connecting rod 212 is detachably connected to the cutting connecting rod 307. Specifically, in the embodiment, the cutting connecting rod 307 and the cutting table connecting rod 212 are connected by bolts. The cutting table connecting rod 212 is fixedly connected to the cutting table frame 201, that is, the cutting shell 301 is connected to the cutting table frame 201 through the detachable cutting connecting rod 307 and the cutting table connecting rod 212 in front lower side.

[0254] When the corn stalk conveying and cutting device needs to be installed on the corn harvesting cutting table, the cutting table hanging rod 211 connected to the cutting table frame 201 is hung in the hanging groove 306, and the cutting table connecting rod 212 and the cutting connecting rod 307 connected to the cutting table frame 201 and the cutting shell 301 respectively are fastened by bolts, so that the corn stalk conveying and cutting device can be easily and conveniently installed on the corn harvesting cutting table. When the corn stalk conveying and cutting device needs to be removed from the corn harvesting cutting table, the fastening bolts are removed first, and then the cutting table hanging rod 211 is removed from the hanging groove 306, so that the removal is easily completed.

[0255] The power of the present application is transmitted from the cutter shaft 302 to the cutting table transmission shaft and the feeding transition shaft 336.

[0256] The cutting table transmission shaft is transmitted to the header roller reversing gear box 802, the transition shaft and the rear spike roller.

[0257] The header roller reversing gear box 802 is transmitted to the first stalk pulling roller 901, the first stalk pulling roller 901 is transmitted to the stalk pulling and heading gear box, the stalk pulling and heading gear box is transmitted to the second stalk pulling roller 901 and the feeding roller 1101. The feeding roller 1101 is transmitted to the clamping chain 602 and the sweeping chain 601.

[0258] The transition shaft is transmitted to the cleaning roller 12, the conveying belt reversing gear box and the lower cutter 15. The conveying belt reversing gear box is transmitted to the conveying belt.

[0259] The feeding transition shaft 336 is transmitted to the front upper feeding roller 331, the front upper feeding roller 331 is transmitted to the rear upper feeding roller 332 and the middle lower feeding roller 334, and the middle lower feeding roller 334 is transmitted to the front lower feeding roller 333 and the rear lower feeding roller 335.

[0260] The cutting table transmission shaft, the transition shaft, the rear spike roller, the conveying belt reversing gear box and the conveying belt are prior art, and will not be described here.

[0261] The above merely describes the preferred embodiments of the present application, and it should be pointed out that, for those skilled in the art, several improvements and replacements can be made without departing from the technical principles of the present application, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. A corn harvester for harvesting both ears and stalks, characterized in that: The invention comprises a vehicle body (101), a cutting platform frame (201) is installed at the front of the vehicle body (101), a fruit ear output end of the cutting platform frame (201) is connected to a lift (4), a straw output end of the cutting platform frame (201) is connected to a chopping device (3), a feeding system and a stem pulling and ear picking unit are installed on the cutting platform frame (201), the feeding system comprises a clamping chain (602), the stem pulling and ear picking unit comprises a pair of feeding rollers (1101) installed at the front side of the top of the stem pulling and ear picking gear box (1001) and a pair of ear picking and stem pulling rollers corresponding to the feeding rollers (1101) and installed at the rear side of the top of the stem pulling and ear picking gear box (1001), and the upper part of the feeding roller (1101) is connected to a clamping sprocket (703) matched with the clamping chain (602); The ear picking and stem pulling rollers comprise an upper ear picking roller (801) and a lower stem pulling roller (901), wherein the top of one of the ear picking rollers (801) is transmission-connected to a reversing gear box (802) that provides power thereto; The distance between the central axes of the two stem pulling rollers (1003) is smaller than the distance between the central axes of the two feeding rollers (1002); the width of the gap between the two stem pulling rollers (901) is smaller than the width of the gap between the two feeding rollers (1101); A debris removal roller (12) is rotatably mounted on the cutting table frame (201), the debris removal roller (12) is located below the feeding system, and two groups of spiral scrapers (1201) are provided on the outer wall of the debris removal roller (12), the two groups of spiral scrapers (1201) rotate in opposite directions and extend spirally along the axial direction of the debris removal roller (12); A transverse rib scraper (1202) is provided on the outer wall of the impurity removal roller (12), and the transverse rib scraper (1202) extends along the axial direction of the impurity removal roller (12); A plurality of transverse rib scrapers (1202) are provided, and the plurality of transverse rib scrapers (1202) are arranged at intervals in the circumferential direction around the impurity removal roller (12); The spiral scraper (1201) and / or the transverse rib scraper (1202) is provided with teeth (1204) at one end away from the impurity removal roller (12); It also includes a fixed knife (14), which is installed on the cutting table frame (201), and the fixed knife (14) is located at the rear side of the debris removal roller (12) and is spaced apart from the debris removal roller (12); Mounting shafts (1203) are provided at both ends of the impurity-removing roller (12).

2. The corn harvester for harvesting both ears and stalks according to claim 1, characterized in that: The feeding system further comprises a straw feeding mechanism and a stalk clamping mechanism, wherein the straw feeding mechanism comprises a straw frame (501) and a straw chain (601) rotatably mounted thereon, and the stalk clamping mechanism comprises a clamping frame (502), the clamping chain (602) being rotatably mounted on the clamping frame (502), and the rear end of the straw chain (601) and the front end of the clamping chain (602) being transmission-connected; A reel tensioning wheel (702) is provided at the front end of the reel plowing frame (501), and a reel plowing chain (601) is mounted on the reel tensioning wheel (702); A rotating tower wheel (701) is provided at the junction of the plowing frame (501) and the clamping frame (502), and the front end of the clamping chain (602) and the rear end of the plowing chain (601) are both mounted on the rotating tower wheel (701); A reed-pulling frame (501) is provided with a reed-pulling sprocket (704).

3. The corn harvester for harvesting both ears and stalks according to claim 2, characterized in that: A feeding channel (503) is formed between every two straw feeding mechanisms, and a clamping channel (504) is formed between every two straw clamping mechanisms, and the left and right opening widths of the front end of the clamping channel (504) are larger than the left and right opening widths of the middle and rear parts of the clamping channel (504); The left and right clamping frames (502) between two adjacent clamping channels (504) correspond to a reeding frame (501); The invention also includes two end reeling frames (511) located on the left and right sides of all reeling frames (501), the rear ends of the two end reeling frames (511) are rotatably connected to the front ends of the two clamping frames (502) located on the leftmost and rightmost sides, and a feeding channel (503) is formed between the end reeling frames (511) and the adjacent reeling frames (501).

4. The corn harvester for harvesting both ears and stalks according to claim 3, characterized in that: A plurality of chain positioning mechanisms cooperating with the clamping chain (602) are respectively arranged at intervals on adjacent sides of the two clamping frames (502), and the chain positioning mechanisms include anti-slip wheels (521) and limiting wheels (522) arranged on the clamping frames (502); The anti-slip wheel (521) and the limiting wheel (522) are spaced apart along the front-back direction of the clamping frame (502), and the distance between the anti-slip wheel (521) and the side of the clamping frame (502) is greater than the distance between the limiting wheel (522) and the side of the clamping frame (502); The anti-slip wheels (521) and the limiting wheels (522) on the two clamping frames (502) are symmetrically arranged along the clamping channel formed by the two clamping frames (502), and the central axes of the anti-slip wheels (521) and the limiting wheels (522) are located in the same vertical plane.

5. The corn harvester for harvesting both ears and stalks according to claim 4, characterized in that: The invention also includes a straw divider (1301), wherein a straw support frame (1302) hinged to the cutting platform frame (201) is provided above the straw divider (1301), and a plurality of straw support rods (1303) located above the straw divider (1301) are provided on the straw support frame (1302), and the spacing between the front ends of two adjacent straw support rods (1303) is adapted to the spacing between two adjacent straw dividers (1301) below the straw support rods (1303).

6. The corn harvester for harvesting both ears and stalks according to claims 1 to 5, characterized in that: The diameter of the upper end of the stem pulling roller (901) is greater than the diameter of the lower end thereof, and a plurality of stem pulling ridges (902) are connected to the side of the stem pulling roller (901).

7. The corn harvester for both ear and stalk harvesting according to any one of claims 1 to 5, characterized in that: A chain rake (40) is provided in the elevator (4), and the chain rake (40) includes a plurality of conveyor chains (400) arranged in parallel. The elevator (4) includes an upper shell (41) and a lower shell (42), the lower end of the lower shell (42) is connected to the cutting table frame (201), and the upper end of the lower shell (42) is hinged to the lower end of the upper shell (41); The hinge point of the upper shell (41) and the lower shell (42) is located on the inner side of the chain rake (40); The lower shell (42) is arranged with a gradually decreasing diameter toward the upper shell (41).

8. The corn harvester for both ear and stalk harvesting according to any one of claims 1 to 5, characterized in that: The shredder device (3) comprises a shredder housing (301), the shredder housing (301) comprising a feed end and an output end respectively located at the front and rear ends, and is characterized in that a shredder blade shaft (302) is installed in the shredder housing (301) near the output end, a front upper feed roller (331) and a rear upper feed roller (332) installed in the shredder housing (301) are sequentially provided on the front upper portion of the shredder blade shaft (302) from front to rear, and a front lower feed roller (333), a middle lower feed roller (334) and a rear lower feed roller (335) installed in the shredder housing (301) are sequentially provided on the front lower portion of the shredder blade shaft (302) from front to rear.

Images