CN220307820U - Corn harvester - Google Patents

Abstract

The utility model discloses a corn harvester, and belongs to the field of agricultural machinery. The corn harvester solves the problems that in the prior art, a corn harvester is easy to plug by corn straws during working, is difficult to clean after plugging, and is easy to cause injury to people due to manual cleaning. The straw cutting machine mainly comprises a cutting table and a straw cutting device, wherein the cutting table comprises an upper cutting table and a lower cutting table, and the upper cutting table is fixedly connected with the lower cutting table; the lower header is fixedly connected with the straw chopping device; the lower cutting table is provided with a cutting knife and a straw auger; the straw chopping device is provided with a feeding inlet and a feeding roller; the corn harvester is provided with a header gearbox, and a power output shaft of the header gearbox is in transmission connection with the header and the straw cutting device. The utility model is mainly used for large corn harvesters, and can also be used for small corn harvesters and other agricultural harvesters.

Description

Corn harvester

Technical Field

The utility model relates to an agricultural machine, in particular to a corn harvester.

Background

With the great popularization of agricultural mechanization in China, the degree of agricultural mechanization in China is higher and higher, and especially in the sowing and harvesting links of crops, the degree of mechanization is improved considerably in the last ten years. The popularization of the corn harvesting machine greatly improves the working efficiency of corn harvesting and reduces the labor intensity of farmers. However, while mechanized harvesting of corn improves efficiency, existing corn harvesters themselves have some undesirable areas. The existing corn harvester comprises an upper header, a lower header, a straw chopping device and a header transmission mechanism, wherein the upper header is used for corn ear picking, the lower header is used for straw harvesting, an ear picking box, a straw pulling device and an ear picking roller are arranged on the upper header, a lower header auger, a cutter and a swinging ring box are arranged on the lower header, the power of a host machine of the corn harvester is directly transmitted to the header transmission mechanism through the middle transmission mechanism, the header transmission mechanism drives the ear picking box, the lower header auger and the swinging ring box to move, the straw pulling device, the ear picking roller and the cutter are driven to move, the rotation of the header transmission mechanism is controlled only through the host machine of the corn harvester, and the situation that the ear picking roller of the header is choked or the straw chopping device is choked can often occur in the working process of the corn harvester. Once the snapping roll of the header is choked, the corn harvester cannot work normally, at this time, a driver often stops the corn harvester, a worker stands in front of the header to clean the corn harvester manually, and the corn stalks clamped in the snapping roll are pulled out by hands to tear out the corn stalks easily, so that the power of the header of the corn harvester is not cut off. The operation is dangerous, the human is easy to hurt, and the arm of the human can be rolled in by carelessness, so that serious injury is caused; time and labor are wasted, and the operation efficiency of the corn harvester can be affected to a certain extent; in corn harvesting season, the moisture of the corn straw is often very big, and when the corn straw moisture is great, the feeding roller in the straw cutting device is easy to be choked, and at this moment, the feeding roller continues to rotate, and the corn straw slips in the middle of the feeding roller, does not walk backwards, and the auger of the lower header is still constantly feeding the corn straw, if not in time clear up, very easily causes serious damage to the machine. At present, no practical solution is available to solve the problem of choking of the feed roller in the straw chopper. Therefore, there is an urgent need for a corn harvester that overcomes the above-described drawbacks of the prior art corn harvesters.

Disclosure of Invention

The utility model aims to provide a corn harvester, which overcomes the defects that in the prior art, once a snapping roll is choked or a straw cutting device is choked in the working process of the corn harvester, the corn straw of a cutting table is required to be manually cleaned or the straw cutting device is cleaned, so that workers are easy to be injured, even mechanical parts are damaged, and the working efficiency of the corn harvester is reduced.

The utility model is realized by adopting the following technical scheme:

the corn harvester comprises a header and a straw cutting device, wherein the header comprises an upper header and a lower header which are fixedly connected; the lower header is fixedly connected with the straw chopping device; the method is characterized in that: the corn harvester is provided with a header gearbox, a power output shaft of the header gearbox is in transmission connection with the header, and the header gearbox is provided with a reversing speed change mechanism.

Further, the power output shaft of the header gearbox is also in transmission connection with the straw chopping device.

Further, the header gearbox is also provided with a positive speed change mechanism.

Further, the header gearbox comprises a power input shaft, a power output shaft and an idler shaft, wherein a first-gear driving gear, a second-gear driving gear and a reverse gear driving gear are arranged on the power input shaft, a first-gear output gear, a second-gear output gear and a reverse gear driven gear are arranged on the power output shaft, and a first-gear intermediate gear and a second-gear intermediate gear are arranged on the idler shaft.

Further, the straw cutting device also comprises a cutting table transmission mechanism for transmitting power to the cutting table, and the straw cutting device is provided with a feeding port and a feeding roller; the cutting table gearbox is fixedly arranged on the cutting table, power is output from two ends of a power output shaft of the cutting table gearbox, one end of the power output shaft is in transmission connection with the cutting table transmission mechanism, and the other end of the power output shaft is in transmission connection with the feeding roller on the straw cutting device.

Further, one end of a power output shaft of the header gearbox is provided with a chain wheel and/or a belt pulley, the other end of the power output shaft of the header gearbox is provided with a shaft connecting device I, one end of the power output shaft of the header gearbox is in transmission connection with the header transmission mechanism through the chain wheel or/and the belt pulley, and the other end of the power output shaft of the header gearbox is in transmission connection with the feeding roller through the shaft connecting device I; the power input shaft of the header gearbox is connected with the power transmission output by the main machine of the corn harvester.

Further, the cutting table transmission mechanism comprises a transmission belt I, a transmission chain II and a transmission chain III, a cutting knife and a lower cutting table auger are arranged on the lower cutting table, and the cutting knife is driven by the swinging ring box; the transmission belt I is in transmission connection with the swing ring box, the transmission chain II is in transmission connection with the auger of the lower header, and the transmission chain III is in transmission connection with the feeding roller.

Further, two pairs of feeding rollers are arranged on the straw cutting device, one pair is arranged on the straw cutting device, the two feeding rollers on the upper side are in transmission connection with the two feeding wheels through a transmission chain IV, the rotation directions are the same, and the two feeding rollers on the lower side are in transmission connection with the two feeding wheels through a transmission chain III, and the rotation directions are the same.

Further, the header gearbox is fixedly arranged on the straw chopping device, a transmission shaft is arranged in the straw chopping device, a cutter is arranged on the transmission shaft, a power input shaft of the header gearbox is connected with a power transmission output by a main machine of the corn harvester, one end of a power output shaft of the header gearbox outputs power and is connected with one end of the transmission shaft, and the other end of the transmission shaft is in transmission connection with a header transmission mechanism and a feeding roller of the straw chopping device.

Further, the header gearbox is fixedly arranged on a main machine of the corn harvester, a power input shaft of the header gearbox is connected with power transmission output by the main machine of the corn harvester, and one end of a power output shaft of the header gearbox outputs power and is in transmission connection with a header transmission mechanism and a feeding roller of the straw cutting device.

Compared with the prior art, the utility model has the beneficial effects that:

the corn harvester is provided with the header gearbox, so that the inversion of the header transmission mechanism of the corn harvester and the straw cutting device can be realized, namely, the reel chain, the snapping roll and the feeding roll in the straw cutting device can be inverted. When the corn harvester works, once the cornstalk is choked by the reel chains and the snapping rollers of the header or the feeding rollers in the straw cutting device are choked, the reversing function of the gearbox of the header can be started, so that the cornstalk plugged in the reel chains and the snapping rollers or in the feeding rollers can be spitted out, the difficulty of manual operation is greatly reduced, and the occurrence of hurting people is effectively avoided; the forward rotation of the header gearbox can be increased, and the header gearbox has a certain effect on cleaning corn stalks in a reel chain and a snapping roll or in a feeding roll; according to the operation needs, when the forward rotation speed increasing function of the header gearbox is started, the working efficiency of the corn harvester can be improved.

Drawings

FIG. 1 is a front view of a schematic structural view of a header and straw chopper of a corn harvester;

FIG. 2 is a top view of a schematic structural view of a header and straw chopper of the corn harvester;

FIG. 3 is a B-B view of FIG. 1;

FIG. 4 is a front view of the header gearbox of embodiment 1;

FIG. 5 is a left side view of the header gearbox of example 1;

FIG. 6 is a right side view of the header gearbox of example 1;

FIG. 7 is a sectional view A-A of FIG. 6;

FIG. 8 is a partial view of the H-H cross-sectional view of FIG. 5;

FIG. 9 is a D-D sectional view of FIG. 6;

FIG. 10 is a partial view of the E-E cross-sectional view of FIG. 9;

FIG. 11 is a schematic view of the lower header and straw chopper of example 2;

fig. 12 is a front view of a schematic structural view of the straw chopper;

FIG. 13 is a rear view of a schematic structural view of the straw chopper;

fig. 14 is a schematic view of the lower header and straw chopper of example 4;

fig. 15 is a structural sectional view of a header gearbox in embodiment 4.

In the figure: 1. a protective cover; 2. a cutting table is arranged; 3. feeding a cutting table auger chain wheel; 4. a telescopic pull rod; 5. a straw chopping device; 6. a driving wheel I; 7. a tensioning wheel; 8. a drive chain; 9. a driving wheel II; 10. a power output shaft; 11. a header transmission mechanism; 12. a header gearbox; 13. a transmission housing; 14. a second gear driving gear; 15. a meshing sleeve; 16. reverse gear driving gear; 17. a first gear drive gear; 18. a sprocket; 19. a shaft connecting device I; 20. a belt pulley; 21. a second gear intermediate gear; 22. reverse gear driven gear; 23. a feeding wheel; 24. a support sleeve; 25. a spline shaft seat; 26. feeding a header auger; 27. a lower cutting table; 28. a cutting table auger is arranged; 29. a feeding port; 30. a cutting knife; 31. a power input shaft; 32. a shaft connecting device II; 33. a feed roller; 34. a seedling pulling device; 35. snapping rolls; 36. a first intermediate gear; 37. a first gear output gear; 38. a second gear output gear; 39. an idler shaft; 40. a gearbox bracket; 41. a vent plug 42, a second shift rail; 43. a first gear and reverse gear shift rail; 44. a stay wire connecting hole; 45. a driving wheel III; 46. a transmission belt I; 47. a transmission chain II; 48. a drive chain III; 49. a transmission shaft; 50 ear picking boxes, 51 and cutters; 52. a swing ring box, 53, a reel chain; 54. a gear I; 55. a gear II; 56. a driving wheel IV; 57. a wheel axle; 58. a transmission belt II; 59. a driving wheel V; 60. a feed roller shaft; 61. a drive chain III; 62. and a transmission chain IV.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

Example 1:

as shown in fig. 1-10:

the corn harvester comprises a header and a straw chopping device 5, wherein the header comprises an upper header 2 and a lower header 27, and the upper header 2 is fixedly connected with the lower header 27; the lower header 27 is fixedly connected with the straw chopping device 5; the lower header 27 is provided with a cutter 30 and a straw auger 28; the straw chopper 5 is provided with a feed port 29 and a feed roller 33; the corn harvester is provided with a header gearbox 12, and a power output shaft 10 of the header gearbox 12 is in transmission connection with the header and the straw cutting device 5;

the header gearbox 12 is provided with a forward rotation speed change mechanism and a reverse rotation speed change mechanism;

as shown in fig. 3, the header gearbox 12 is fixedly mounted on the lower header 27, and as shown in fig. 6-7, the two ends of the power output shaft 10 of the header gearbox 12 output power, one end of the power output shaft is provided with a belt pulley 20 and two chain wheels 18, and the other end of the power output shaft is provided with a shaft connecting device I19; as shown in fig. 2, a lower header auger 28, a cutter 30, a seedling-collecting device 34, a snapping roll 35 and a snapping box 50 are arranged on the header, and a header transmission mechanism 11 comprises a transmission belt I46, a transmission chain II 47 and a transmission chain III 48; as shown in fig. 3, one end of the power output shaft 10 of the header gearbox 12 drives the ear picking box 50 to work through a sprocket 18 and a transmission chain iii 48, power is transmitted to the seedling collecting device 34 and the ear picking roller 35 through the ear picking box 50, the lower header auger 28 is driven to work through another sprocket 18 and a transmission chain ii 47, the swinging ring box 52 is driven to work through the belt pulley 20 and a transmission belt i 46, and then the cutter 30 is driven to work through the swinging ring box 52. The other end of the power output shaft 10 of the header gearbox 12 is in transmission connection with a feeding roller 33 on the straw chopping device 5 through a shaft connecting device I19; the feeding roller is provided with a feeding wheel 23 which is used for being in transmission connection with other feeding rollers; the straw cutting device 5 is internally provided with a transmission shaft 49, one end of the transmission shaft 49 is provided with a transmission wheel III 45, the transmission wheel III 45 is connected with power transmitted by a corn harvester host, the other end of the transmission shaft 49 is provided with a transmission wheel I6, the transmission shaft 49 positioned in the straw cutting device 5 is provided with a cutter 51, the power input shaft 31 of the header gearbox 12 is connected with a transmission wheel II9 through a shaft connecting device III32, the transmission wheel II9 is connected with the transmission wheel I6 through a transmission chain, and thus, the power input shaft 31 of the header gearbox 12 is connected with power transmitted by the corn harvester host through the shaft connecting device III32, the transmission wheel II9, the transmission wheel I6, the transmission shaft 49 and the transmission wheel III 45. The transmission connection structure of the ear picking box 50, the seedling pulling device 34 and the ear picking roller 35 is the prior art, and can be seen in Chinese patent application CN113519274A; the swinging ring box is the prior art, and can be seen in China patent CN206042823U.

The straw cutting device 5 is provided with two pairs of feeding rollers 33, one pair is arranged up and down, the upper feeding roller and the lower feeding roller are matched with each other, and corn straw is conveyed backwards from the middle of the two feeding rollers. As seen from fig. 12, the upper two feeding rollers 33 are in transmission connection with the two feeding wheels 23 through a transmission chain iv 62, the rotation directions are the same, and the lower two feeding rollers 33 are in transmission connection with the two feeding wheels 23 through a transmission chain iii 61, the rotation directions are the same; as seen in fig. 13, the upper feeding roller 33 is provided with a driving wheel V59, the driving wheel V59 is in driving connection with a driving wheel IV 56 through a driving belt II 58, the driving wheel IV 56 is arranged on a wheel shaft 57, and the wheel shaft 57 is fixed on the shell of the straw chopping device 5; the wheel shaft 57 is provided with a gear II55, and the gear II55 is engaged with a gear I54 provided on the feed roller shaft 60 so that the lower two feed rollers 33 are rotated in the opposite direction to the upper two feed rollers 33.

As shown in fig. 2-3 and 6-7, the header gearbox 12 is provided with a neutral gear, a first forward gear, a second forward gear and a reverse gear, the header gearbox 12 is provided with a power input shaft 31, a power output shaft 10 and an idler shaft 39, the power input shaft 31 is provided with a first gear driving gear 17, a second gear driving gear 14 and a reverse gear driving gear 16, the power output shaft 10 is provided with a first gear output gear 37, a second gear output gear 38 and a reverse gear driven gear 22, and the idler shaft 39 is provided with a first gear intermediate gear 36 and a second gear intermediate gear 21.

When the reverse driving gear 16 and the reverse driven gear 22 are meshed, the header transmission mechanism 11 reverses, so that the reel chain 53, the snapping roll 35 and the feeding roll 33 realize reversing, namely reversing, and the feeding wheel 23 drives other feeding rolls to rotate together through a chain; the first-gear output gear 37 and the first-gear intermediate gear 36, the second-gear output gear 38 and the second-gear intermediate gear 21 are in a constant mesh state; when the first gear driving gear 17 and the first gear intermediate gear 36 are meshed, the header transmission mechanism 11 and the feeding roller 33 rotate positively, and the normal working speed is achieved; when the second gear driving gear 14 and the second gear intermediate gear 21 are meshed, each working part of the header transmission mechanism 11 and the straw chopper 5 rotates positively to achieve 1.2 times of speed increase.

When the header gearbox 12 is in first gear, the speed of each working part of the corn harvester header is the normal working speed; in second gear, the speed of the corn harvester header and the various working components of the straw chopper 5 is 1.2 times the normal speed.

The shaft connecting device I19 and the shaft connecting device II32 can be universal joints, couplings, spline shaft seats and the like.

The power take-off shaft 10 is connected to the feed roller 33 by means of a universal joint, which is simple and easy to implement.

The corn harvester is provided with a header gearbox 12, so that the operation components on the header and the operation components of the straw chopping device can rotate forward and backward. The header gearbox 12 is fixedly mounted on the corn harvester header in a relatively close relationship to the drive components of the header and the header frame structure is relatively easy to mount.

When the corn harvester works normally, namely corn is harvested, the corn harvester advances forwards at a certain speed; the cutting table gearbox 12 is hung in a first forward gear or a second forward gear; the power transmitted by the engine of the corn harvester through the main machine gearbox is transmitted to the driving wheel III 45, the driving wheel III 45 drives the transmission shaft 49 and the driving wheel I6 to rotate, the driving wheel I6 drives the driving wheel II9 to rotate, and the driving wheel II9 transmits the power to the power input shaft 31. The two ends of the power output shaft 10 of the header gearbox 12 output power, one end of the power output shaft drives the transmission belt I46 to rotate through the belt pulley 20, the power is transmitted to the swinging ring box 52, and the swinging ring box 52 drives the cutter 30 to work; the chain wheel 18 drives the transmission chain II 47 and the transmission chain III 48 to rotate, the transmission chain II 47 drives the lower header auger 28 to work, and the transmission chain III 48 drives the ear picking box 50 to work; the other end of the power take-off shaft 10 is connected to the feed roller 33 via a shaft connection I19. When the corn harvester operates normally, as seen in fig. 1, the driving wheel I6, the driving wheel II9 and the power input shaft 31 rotate in the counterclockwise direction, and after the speed change of the header gearbox 12, the power output shaft 10 also rotates in the counterclockwise direction and drives the driving belt I46, the driving chain II 47 and the driving chain iii 48 to rotate in the counterclockwise direction. When the ear picking roller 35 and the straw pulling chains 53 are arranged in pairs, and the ear picking box 50 works normally, the front end of the corn harvester is positioned at the cutter 30, the inner sides of the two straw pulling chains 53 are pulled backwards, the two ear picking rollers 35 rotate towards the inner sides in opposite directions, so that the corn ears are picked off and sent to the corn collecting box through the upper header screw conveyor 26, meanwhile, the cut corn straws are pulled to the lower header screw conveyor 28 through the ear picking rollers 35, and the lower header screw conveyor 28 further conveys the cut corn straws to the feeding port 29 and finally to the straw cutting device 5; as seen in fig. 12, the upper two feed rollers 33 rotate in the counterclockwise direction, and the lower two feed rollers 33 rotate in the clockwise direction; under the action of the feed roller 33 and the cutter 51, the corn stalks are cut into pieces and finally fed into a stalk collection box by a conveyor.

When the snapping roll 35 or the feeding roll 33 is choked, the corn harvester stops advancing, the header gearbox 12 is changed into a reverse gear, at the moment, the power output shaft 10 is reversed, so that the header transmission mechanism 11 and the feeding roll 33 are driven to be reversed, the snapping roll 35, the reel chains 53 and the lower header auger 28 are also reversed, at the moment, the header transmission mechanism 11 rotates clockwise, so that the two snapping rolls 35 rotate outwards away from each other, and the inner sides of the two reel chains 53 are pulled forwards; as seen in fig. 12, the upper two feed rolls 33 are turned clockwise, and the lower two feed rolls 33 are turned counterclockwise, so that the straw choked on the snapping roll 35 or the feed rolls 33 is pushed outward, i.e., "spit" out, and at this time, if pulled outward by manpower with assistance from the upper header, a better effect is obtained.

Example 2:

the corn harvester comprises a header and a straw chopping device 5, wherein the header comprises an upper header 2 and a lower header 27, and the upper header 2 is fixedly connected with the lower header 27; the lower header 27 is fixedly connected with the straw chopping device 5; the lower header 27 is provided with a cutter 30 and a straw auger 28; the straw chopper 5 is provided with a feed port 29 and a feed roller 33; as shown in fig. 11, the corn harvester is provided with a header gearbox 12, the header gearbox 12 is fixedly arranged on the straw chopping device 5, a power input shaft 31 of the header gearbox 12 is connected with power transmission output by a corn harvester host, one end of a power output shaft 10 of the header gearbox 12 outputs power and is connected with one end of a transmission shaft 49, and the other end of the transmission shaft 49 is in transmission connection with a header transmission mechanism 11 and a feeding wheel 23 of the straw chopping device 5 through a transmission wheel I6 and a transmission wheel II 9; the header gearbox 12 is provided with a forward rotation speed change mechanism and a reverse rotation speed change mechanism; the internal structure of the header gearbox 12 is the same as in embodiment 1; otherwise, the same as in example 1 was used.

In embodiment 2, when the header gearbox 12 is put into reverse, the drive shaft 49 is also reversed.

Example 3:

unlike the embodiment 2, the header gearbox (12) is fixedly installed on the main machine of the corn harvester, the power input shaft 31 of the header gearbox 12 is connected with the power transmission output by the main machine of the corn harvester, and one end of the power output shaft 10 of the header gearbox 12 outputs power and is in transmission connection with the header transmission mechanism 11 and the feeding roller 33 of the straw chopping device 5 through the transmission wheel III 45, the transmission shaft 49, the transmission wheel I6 and the transmission wheel II 9.

In embodiment 3, when the header gearbox 12 is put into reverse, the transmission wheel iii 45 and the transmission shaft 49 are also reversed.

Example 4:

the corn harvester comprises a header and a straw chopping device 5, wherein the header comprises an upper header 2 and a lower header 27, and the upper header 2 is fixedly connected with the lower header 27; the lower header 27 is fixedly connected with the straw chopping device 5; the corn harvester is provided with a header gearbox 12, a power output shaft 10 of the header gearbox 12 is in transmission connection with the header, and the header gearbox 12 is provided with a forward and reverse speed change mechanism; the header gearbox 12 is arranged on the header, and a power output shaft 10 of the header gearbox 12 is in transmission connection with the header transmission mechanism 11; the power input shaft 31 of the header gearbox 12 is connected with the power transmission output by the main machine of the corn harvester.

When the corn harvester is used, a corn harvester cutting table is arranged and fixed on the corn harvester cutting table or a main machine of the corn harvester through a gearbox bracket 40 according to design requirements, an operating lever of a cutting table gearbox 12 is arranged in a cab and is connected with a gear shifting stay wire, the gear shifting stay wire is connected with a second gear shifting fork shaft 42, a stay wire connecting hole 44 of a first gear shifting fork shaft 43 and a reverse gear shifting fork shaft 43, and a shifting fork is arranged on the gear shifting fork shaft; the shifting fork is controlled by the control rod to realize gear engagement and gear shifting.

Claims (10)

1. The corn harvester comprises a header and a straw chopping device (5), wherein the header comprises an upper header (2) and a lower header (27), and the upper header (2) is fixedly connected with the lower header (27); the lower cutting table (27) is fixedly connected with the straw chopping device (5); the method is characterized in that: the corn harvester is provided with a header gearbox (12), a power output shaft (10) of the header gearbox (12) is in transmission connection with the header, and the header gearbox (12) is provided with a reversing speed change mechanism.

2. The corn harvester of claim 1, wherein: the power output shaft (10) of the header gearbox (12) is also in transmission connection with the straw chopping device (5).

3. The corn harvester of claim 2, wherein: the header gearbox (12) is also provided with a positive speed change mechanism.

4. A corn harvester according to claim 3, wherein: the cutting table gearbox (12) comprises a power input shaft (31), a power output shaft (10) and an idler shaft (39), wherein a first-gear driving gear (17), a second-gear driving gear (14) and a reverse gear driving gear (16) are arranged on the power input shaft (31), a first-gear output gear (37), a second-gear output gear (38) and a reverse gear driven gear (22) are arranged on the power output shaft (10), and a first-gear intermediate gear (36) and a second-gear intermediate gear (21) are arranged on the idler shaft (39).

5. The corn harvester of any one of claims 1-4, wherein: the straw cutting device also comprises a cutting table transmission mechanism (11) for transmitting power to the cutting table, and the straw cutting device (5) is provided with a feeding port (29) and a feeding roller (33); the cutting table gearbox (12) is fixedly arranged on the cutting table, two ends of the power output shaft (10) of the cutting table gearbox (12) output power, one end of the power output shaft is in transmission connection with the cutting table transmission mechanism (11), and the other end of the power output shaft is in transmission connection with the feeding roller (33) on the straw cutting device (5).

6. The corn harvester of claim 5, wherein: one end of a power output shaft (10) of the header gearbox (12) is provided with a chain wheel and/or a belt pulley, the other end of the power output shaft is provided with a shaft connecting device I (19), one end of the power output shaft (10) of the header gearbox (12) is in transmission connection with the header transmission mechanism (11) through the chain wheel and/or the belt pulley, and the other end of the power output shaft is in transmission connection with the feeding roller (33) through the shaft connecting device I (19); the power input shaft (31) of the header gearbox is connected with the power transmission output by the main machine of the corn harvester.

7. The corn harvester of claim 5, wherein: the cutting table transmission mechanism (11) comprises a transmission belt I (46), a transmission chain II (47) and a transmission chain III (48), a cutting knife (30) and a lower cutting table auger (28) are arranged on the lower cutting table (27), and the cutting knife (30) is driven by a swinging ring box (52); the driving belt I (46) is in driving connection with the swinging ring box (52), the driving chain II (47) is in driving connection with the lower cutting table auger (28), and the driving chain III (48) is in driving connection with the feeding roller (33).

8. The corn harvester of claim 5, wherein: the straw cutting device (5) is provided with two pairs of feeding rollers (33), one pair is arranged at the top and the bottom, the two feeding rollers (33) at the upper side are in transmission connection with the two feeding wheels (23) through a transmission chain IV (62), the rotation directions are the same, and the two feeding rollers (33) at the lower side are in transmission connection with the two feeding wheels (23) through a transmission chain III (61), and the rotation directions are the same.

9. The corn harvester of any one of claims 1-4, wherein: the utility model provides a maize picker main machine output's power transmission is connected, power output shaft (10) one end output power of header gearbox (12) and be connected with transmission shaft (49) one end, transmission shaft (49) other end and header drive mechanism (11) and feeding roller (33) transmission of straw cutting device (5) are provided with transmission shaft (49) on straw cutting device (5) fixed mounting on straw cutting device (5), are provided with cutter (51) on transmission shaft (49).

10. The corn harvester of any one of claims 1-4, wherein: the cutting table gearbox (12) is fixedly arranged on a main machine of the corn harvester, a power input shaft (31) of the cutting table gearbox (12) is connected with power transmission output by the main machine of the corn harvester, and one end of a power output shaft (10) of the cutting table gearbox (12) outputs power and is in transmission connection with a cutting table transmission mechanism (11) and a feeding roller (33) of the straw cutting device (5).