CN217509422U - Header matched with split type rice harvester - Google Patents

Abstract

The utility model relates to a rice harvester field specifically discloses a header supporting with split type rice harvester, include: the rice harvester comprises a rack, a rice cutting device with a first rice cutting knife group, a second rice cutting knife group and a rice cutting wheel, a transfer grain bin, a threshing device, a first conveying device, a second conveying device, a winnowing device, a knife group driving part and a rice straw shifting assembly. The header matched with the split type rice harvester in the embodiment can realize the operations of cutting, threshing, storing, conveying and the like of rice by arranging the cutting device, the threshing device, the transfer grain bin and the lifting device, the second cutting knife group cuts the upper rice ears, the rice ears are input into the threshing device for threshing, the amount of rice stalks entering the threshing device is reduced, and the threshing efficiency is improved; the first rice cutting knife set cuts rice stems and reserves proper rice stump height, so that the yield of ratoon rice is improved.

Description

Header matched with split type rice harvester

Technical Field

The utility model belongs to the field of rice harvesters, in particular to a header matched with a split type rice harvester.

Background

Currently, cultivated Oryza sativa (Oryza sativa L) planted in production is evolved from Oryza rufipogon Griff, which is a common wild rice (Oryza rufipogon Griff) that grows in the Yangtze river basin in Guangxi, through hundreds of years of natural evolution and artificial improvement. The ancestors of the cultivated rice are perennial, the root system still keeps vitality after the overground part of the ancestors withers, and a new plant is grown in the next season under proper conditions, namely, the ancestors have strong regeneration capacity. The agronomic characters of the wild rice are fundamentally changed by strong manual intervention. The first green revolution marked by rice dwarf breeding (fifties of the last century) and the second green revolution starting from successful cultivation of hybrid rice (seventies of the last century) have the core purpose of improving the economic coefficient and the yield of rice to the maximum extent, and the improved rice variety has short plant, thick stalk and large spike and greatly weakened regeneration capacity of most varieties. Since twenty-first century, the rice production has changed from the pure pursuit of yield to the consideration of yield, quality and benefit, the reduction of production cost and labor intensity will be a strong demand for rice production in future. In recent years, researchers have developed a new variety of rice with high regeneration ability by digging up a regeneration gene of rice, and have developed a series of techniques for cultivating regenerated rice. The yield of the ratoon rice can reach more than 500 kg per mu at most by adopting a method of manual harvesting and fine management.

When the ratooning rice is harvested, in order to keep the root system of the ratooning rice alive, a section of about 20-30 cm rice stake needs to be left on the ground close to the root, and the rice straw needs to be left in the field to return the rice straw to the field. Most of the existing rice harvesters adopt single-layer cutters, the length of rice straw entering the threshing device is too long, so that the threshing efficiency is influenced, blockage is easily caused, and meanwhile, the height of a remained pile is not easily controlled, so that the growth of regenerated rice and the formation of yield are not facilitated.

The above background disclosure is only provided to aid understanding of the inventive concepts and solutions of the present invention, and it does not necessarily pertain to the prior art of this patent application, and it should not be used to assess the novelty and inventive aspects of this application without explicit evidence that such contents are disclosed at the filing date of this patent application.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a header with split type rice harvester is supporting to overcome current harvester when reaping first season rice, the straw length overlength that enters into in the thresher influences the efficiency of threshing and stays a high uncontrollable defect.

In order to achieve the above object, the utility model provides a header with split type rice harvester is supporting, include: the device comprises a frame, wherein one end of the frame is provided with a grain cutting device, the other end of the frame is provided with a transfer grain bin, the grain cutting device comprises a grain cutting bucket with a bucket opening, a spiral roller is arranged in the grain cutting bucket, the bucket opening is provided with a first grain cutting knife group and a second grain cutting knife group, the first grain cutting knife group is positioned below the second grain cutting knife group, and a grain poking wheel is arranged above the second grain cutting knife group; the threshing device is arranged between the grain cutting device and the transfer grain bin, a first conveying device is arranged between the threshing device and the grain cutting bucket, a second conveying device is arranged between the threshing device and the transfer grain bin, and a winnowing device is arranged on the second conveying device; the lifting device comprises a lifting inlet and a lifting outlet, the lifting inlet is communicated with the transfer barn, and a lifting helical blade is arranged between the lifting inlet and the lifting outlet.

Preferably, in the above technical solution, two sides of the bucket opening are respectively provided with a branch shovel, and a head of the branch shovel extends obliquely downward to the outside of the bucket opening.

Preferably, in the above technical scheme, an ear inlet opposite to the opening is formed in the inner wall of the grain cutting bucket, a first helical blade and a second helical blade are arranged on the periphery of the helical drum, the first helical blade and the second helical blade are respectively located on two sides of the ear inlet, and the rotation directions of the first helical blade and the second helical blade are opposite.

Preferably, in the above technical solution, the periphery of the spiral drum is further provided with a plurality of spaced separation blades, and the separation blades are located between the first spiral blade and the second spiral blade.

Preferably, in the above technical solution, a distance from the first reel knife group to the spiral drum in the horizontal direction is smaller than a distance from the second reel knife group to the spiral drum in the horizontal direction.

Preferably, in the above technical scheme, the first reel knife group includes a first fixed knife tooth and a first movable knife tooth, the first fixed knife tooth is fixedly connected with the reel bucket, and the first movable knife tooth is slidably connected with the first fixed knife tooth; the second straw cutting knife group comprises a second fixed knife tooth and a second movable knife tooth, the second fixed knife tooth is fixedly connected with the straw cutting bucket, and the second movable knife tooth is connected with the second fixed knife tooth in a sliding mode.

Preferably, in the above technical solution, the cutting device further includes a cutter group driving unit including: the driving wheel is rotationally connected with the grain cutting bucket; one end of the driving rod is provided with a first connecting end, the other end of the driving rod is provided with a second connecting end and a third connecting end, the first connecting end is connected with the driving wheel through a first crank, the second connecting end is connected with the first movable cutter tooth through a second crank, and the third connecting end is connected with the second movable cutter tooth through a third crank; when the driving wheel rotates, the driving rod can simultaneously drive the first fixed cutter tooth and the first movable cutter tooth and the second fixed cutter tooth to reciprocate.

Preferably, in the above technical scheme, the rice harvester further comprises two rice poking rod assemblies, the two rice poking rod assemblies are symmetrically arranged between the first rice cutting knife group and the spiral roller, each rice poking rod assembly comprises a plurality of chain wheels, a chain is sleeved outside each chain wheel, a plurality of poking rods are arranged on the chains at intervals, and one of the chain wheels is connected with the output end of the poking rod motor.

Preferably, among the above-mentioned technical scheme, thresher's one end is equipped with the ear of rice export, thresher's the other end is equipped with corn export and straw export the ear of rice export with be equipped with threshing cage between the corn export, first conveyor connects the ear of rice entry with between the ear of rice export, second conveyor connects the corn export with between the transit grain storehouse.

Preferably, in the above technical scheme, the air separation device includes an air inlet, a first air outlet and a second air outlet, the air inlet is communicated with the inside of the second conveying device, the first air outlet is connected to the threshing device and faces the straw outlet, and the second air outlet faces the outside of the air separation device.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the header matched with the split rice harvester in the utility model can realize the operations of cutting rice, threshing, storing, conveying and the like of rice by arranging the cutting device, the threshing device, the transfer grain bin and the lifting device, the second cutting knife group cuts the upper rice ears, the rice ears are input into the threshing device for threshing, the amount of rice stalks entering the threshing device is reduced, and the threshing efficiency is improved; the first rice cutting knife set cuts rice stems, and proper rice pile height is reserved, so that rice roots can grow conveniently, and the yield of ratoon rice is improved.

2. The utility model provides a still install at the rear of first cutting standing grain knife tackle with the supporting header of split type rice harvester and dial the straw subassembly, its straw that can inlay the middle part of head after removing the tail with rice stirs to the both sides of harvester, makes the straw of this part be dialled into the field to can wet manure still field, and can also avoid the harvester to take place to block up advancing the in-process.

3. The utility model provides a bilateral symmetry in the place ahead of bucket mouth is provided with a branch line shovel, and it can stir the rice in place ahead to both sides at the in-process of reaping to make the rice pole collect to the direction of bucket mouth more easily.

4. The utility model provides a last welding of helical cylinder has first helical blade and the second helical blade that revolves to opposite, carry out the pivoted in-process when helical cylinder, can extrude and collect the straw that has the ear of rice after the cutting to the region between first helical blade and the second helical blade, and can enter into the ear of rice entry more easily, carry threshing device by first conveyor in, consequently, the effect of a direction can be played, and still be provided with the multi-disc between first helical blade and second helical blade skin and separate the blade, it can play the effect that prevents to block up.

5. The utility model provides a first grass cutting knife tackle is less than the distance that the second cuts the horizontal direction of grass cutting knife tackle to spiral drum to the horizontal direction's of spiral drum distance to can cut off the rice earlier and cut the rice stake again, it can guarantee that the rice is in vertical state all the time when cutting the rice ear of grain, makes the cutter exert oneself better, and can also avoid dialling the interference of rice stem device when reaping the rice ear of grain.

6. The utility model provides a knife tackle drive division just can drive first activity sword tooth and the synchronous motion of second activity sword tooth through a actuating lever to make first cutting standing grain knife tackle and second cut standing grain knife tackle synchronous working, its simple structure easy to maintain, and the structure quality is light.

7. The utility model provides a be provided with two air outlets of first air outlet and second air outlet among the wind selector, it not only can get rid of the impurity among the second conveyor, but also can blow to the straw exit to make the straw more easily discharged, the straw after preventing to thresh is located to block up here.

Drawings

Fig. 1 is a structural diagram of the cutting table matched with the split rice harvester.

Fig. 2 is a structural view of the cutting device.

Fig. 3 is a structural view of the first and second groups of cutting blades and the driving part of the blade group.

Fig. 4 is a structural view of the threshing device and the lifting device.

Fig. 5 is a block diagram of another angle of the threshing device and the lifting device.

Description of the main reference numerals:

1-a frame;

2-a grain cutting device, 21-a grain cutting bucket, 22-a bucket opening, 23-a first grain cutting knife group, 231-a first fixed knife tooth, 232-a first movable knife tooth, 233-a first clamping groove, 24-a second grain cutting knife group, 241-a second fixed knife tooth, 242-a second movable knife tooth, 243-a second clamping groove, 25-a spiral roller, 251-a first spiral blade, 252-a second spiral blade, 253-a separating blade, 26-a grain poking wheel, 27-a rice ear inlet and 28-a dividing shovel;

3-transferring the grain to a granary;

4-threshing device, 41-ear outlet, 42-grain outlet, 43-straw outlet and 44-threshing cage;

5-a first conveying device;

6-a second conveying device;

7-a wind selection device, 71-an air inlet, 72-a first air outlet and 73-a second air outlet;

8-lift, 81-lift inlet, 82-lift outlet;

9-a knife set driving part, 91-a driving wheel, 92-a driving rod, 921-a first connecting end, 922-a second connecting end, 923-a third connecting end, 924-a first crank, 925-a second crank, 926-a third crank;

10-rice pulling rod component, 101-chain wheel, 102-chain, 103-pulling rod, 104-pulling rod motor.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. The terms "first", "second" and "third", if any, are used for descriptive purposes only and for distinguishing between technical features and are not to be construed as indicating or implying relative importance or implying a number of indicated technical features or a precedence of indicated technical features.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "disposed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The following describes an embodiment of the present invention according to its overall structure.

As shown in fig. 1 to 5, the header associated with the split-type rice harvester in this embodiment includes: the rice combine comprises a frame 1, a rice cutting device 2, a rice cutting bucket 21, a bucket opening 22, a first rice cutting knife group 23, a first fixed knife tooth 231, a first movable knife tooth 232, a second rice cutting knife group 24, a second fixed knife tooth 241, a second movable knife tooth 242, a spiral roller 25, a first spiral blade 251, a second spiral blade 252, a separating blade 253, a rice poking wheel 26, a rice ear inlet 27, a separating shovel 28, a grain transferring bin 3, a threshing device 4, a rice ear outlet 41, a grain outlet 42, a rice straw outlet 43, a threshing cage 44, a first conveying device 5, a second conveying device 6, a winnowing device 7, an air inlet 71, a first air outlet 72, a second air outlet 73, a lifting device 8, a lifting inlet 81, a lifting outlet 82, a knife group driving part 9, a driving wheel 91, a connecting end 92, a first connecting end 921, a second connecting end 922, a third connecting end 923, a first crank 924, a second crank 925 and a third crank 926, the rice poking rod assembly 10, a chain wheel 101, a chain 102, a poking rod 103 and a poking rod motor 104.

A grain cutting device 2 is fixedly installed at one end of a rack 1, a transfer grain bin 3 is fixedly installed at the other end of the rack, a supporting foot capable of being placed on the ground is arranged at the bottom of the rack 1, the grain cutting device 2 comprises a grain cutting bucket 21, a bucket opening 22 is formed in one end of the grain cutting bucket 21, a rotatable spiral roller 25 is installed in the grain cutting bucket 21, the axis of the spiral roller 25 is arranged in the horizontal direction, a first grain cutting knife group 23 and a second grain cutting knife group 24 are installed at the bucket opening 22, the first grain cutting knife group 23 is located below the second grain cutting knife group 24, and a rotatable grain poking wheel 26 is installed above the second grain cutting knife group 24; two sides of the bucket opening 22 are respectively provided with a branch shovel 28, the head of the branch shovel 28 extends to the oblique lower part of the outer part of the bucket opening 22, and the head of the branch shovel 28 is provided with a sharp-angled structure; the inner wall of the grain cutting bucket 21 is provided with an ear inlet 27 opposite to the bucket opening 22; a first helical blade 251 and a second helical blade 252 are welded on the periphery of the helical drum 25, the axes of the first helical blade 251 and the second helical blade 252 are coincident with each other and are respectively positioned at two sides of the rice ear inlet 27, and the rotation directions of the first helical blade 251 and the second helical blade 252 are opposite; two partition blades 253 which are parallel to each other and are arranged at intervals are welded on the periphery of the spiral roller 25, the shape of each partition blade 253 is triangular, and each partition blade 253 is positioned between the first spiral blade 251 and the second spiral blade 252; the distance from the first cutting blade group 23 to the horizontal direction of the spiral drum 25 is less than the distance from the second cutting blade group 24 to the horizontal direction of the spiral drum 25; the threshing device 4 is arranged between the grain cutting device 2 and the transfer grain bin 3, the first conveying device 5 is arranged between the threshing device 4 and the grain cutting bucket 21, the second conveying device 6 is arranged between the threshing device 4 and the transfer grain bin 3, and the side surface of the second conveying device 6 is fixedly provided with the winnowing device 7; the lifting device 8 is fixedly arranged in the transit grain bin 3 and comprises a lifting inlet 81 and a lifting outlet 82, the lifting inlet 81 is communicated with the interior of the transit grain bin 3, and a rotatable lifting helical blade is arranged between the lifting inlet 81 and the lifting outlet 82; the two rice poking rod assemblies 10 are symmetrically arranged between the first rice cutting knife group 23 and the spiral roller 25, each rice poking rod assembly 10 comprises two chain wheels 101, a chain 102 is sleeved outside each chain wheel 101, a plurality of poking rods 103 are arranged on each chain 102 at intervals, each poking rod 103 has certain flexibility, and one chain wheel 101 in each group of rice poking rod assemblies 10 is connected with the output end of a poking rod motor 104.

Specifically, the first cutting blade group 23 includes a first fixed blade 231 and a first movable blade 232, the first fixed blade 231 is fixedly connected with the cutting hopper 21, and the first movable blade 232 is slidably connected with the first fixed blade 231 so as to enable the first movable blade 232 to slide along the length direction of the first fixed blade 231; the second cutting knife group 24 comprises a second fixed knife tooth 241 and a second movable knife tooth 242, the second fixed knife tooth 241 is fixedly connected with the cutting bucket 21, the second movable knife tooth 242 is connected with the second fixed knife tooth 241 in a sliding mode so that the second movable knife tooth 242 can slide along the length direction of the second fixed knife tooth 241, and the direction of each knife tooth faces the outside of the bucket opening 22; the knife group driving part 9 is simultaneously connected with the first grain cutting knife group 23 and the second grain cutting knife group 24, and the knife group driving part 9 comprises a driving wheel 91 and a driving rod 92; the driving wheel 91 is rotationally connected with the rear end of the grain cutting bucket 21; the rod body of the driving rod 92 is in a shape of a Y, a first connecting end 921 is arranged at one end of the driving rod 92, a second connecting end 922 and a third connecting end 923 are arranged at the other end of the driving rod 92, the first connecting end 921 is connected with the driving wheel 91 through a first crank 924, one end of the first crank 924 is fixedly connected with the axis of the driving wheel 91, the other end of the first crank 924 is rotatably connected with the first connecting end 921, and the axis of the rotating shaft is parallel to the direction of the rotating axis of the driving wheel 91; the second connecting end 922 is connected with the first movable cutter tooth 232 through a second crank 925, one end of the first movable cutter tooth 232 is provided with a first clamping groove 233, the length direction of the first clamping groove 233 is perpendicular to the length direction of the first movable cutter tooth 232, the second crank 925 is of an L-shaped structure, the middle of the second crank 925 is rotatably connected with the end part of the first fixed cutter tooth 231, one end of the second crank 925 is provided with a sliding pin, the sliding pin can slide in the first clamping groove 233, and the other end of the second crank 925 is in spherical hinge connection with the second connecting end 921; the third connecting end 923 is connected with the second movable cutter tooth 242 through a third crank 926, one end of the second movable cutter tooth 242 is provided with a second clamping groove 243, the length direction of the second clamping groove 243 is perpendicular to the length direction of the second movable cutter tooth 242, the third crank 926 is in an L-shaped structure, the middle of the third crank 926 is rotatably connected with the end of the second fixed cutter tooth 241, one end of the third crank 926 is provided with a sliding pin, the sliding pin can slide in the second clamping groove 243, and the other end of the third crank 926 is in spherical hinge with the third connecting end 923; when the driving wheel 91 rotates, the driving rod 92 can simultaneously drive the first fixed cutter tooth 231 and the first movable cutter tooth 232 and the second movable cutter tooth 242 and the second fixed cutter tooth 241 to reciprocate, so that cutting is performed.

Specifically, ear of grain export 41 has been seted up to the bottom of thresher 4's one end, corn export 42 and straw export 43 have been seted up side by side to the bottom of thresher 4's the other end, install rotatable threshing cage 44 between ear of grain export 41 and corn export 42, the axis of rotation of this threshing cage 44 is by the directional its other end of thresher 4's one end, first conveyor 5 connects between ear of grain entry 27 and ear of grain export 41, second conveyor 6 connects between corn export 42 and transit grain storehouse 3, the link joint is all installed to first conveyor 5 and second conveyor 6's inside.

Specifically, the winnowing device 7 includes an air inlet 71, a first air outlet 72 and a second air outlet 73 which are opened on the housing of the winnowing device, a rotatable volute is arranged inside the winnowing device 7, the air inlet 71 is communicated with the inside of the second conveying device 6, the first air outlet 72 is connected to the threshing device 4 and the air outlet direction of the first air outlet is towards the rice straw outlet 43, and the second air outlet 73 is opened on the side portion of the housing of the winnowing device 7 and towards the outside of the winnowing device 7.

Next, the working principle of the header associated with the split-type rice harvester in this embodiment will be described in detail, so that those skilled in the art can understand the present invention more:

when in use, the rice ear part is cut by the second rice cutting knife group 24 above, then the first rice cutting knife group 23 is used for cutting at the position close to the root part, a short rice pile is left, the rice straw part with the middle cut off is pulled out from the two sides of the rice cutting device 2 by the rice straw pulling component, the rice straw at the cut rice ear part is pulled into the spiral roller 25 by the rice ear of the rice pulling wheel 26, when the spiral roller 25 rotates, the first spiral blade 251 and the second spiral blade 252 drive the ears of rice to the ear inlet 27 simultaneously, so that the ears of rice enter the ear inlet 27, and then the first conveying device 5 conveys the ears of rice to the threshing device 4, in the threshing device, the threshing cage 44 beats the ears of rice into rice grains, the beaten grains enter the grain outlet 42, the grains are conveyed into the transit grain bin 3 by the second conveying device 6, and finally the grains are lifted into an independent grain storage bin by the lifting device 8; when the grains pass through the second conveying device 6, sundries or unsaturated rice husks are sucked out and winnowed by the winnowing device 7, and the first air outlet 72 in the winnowing device 7 faces the straw outlet so as to blow the threshed straws out of the straw outlet 43.

In conclusion, the header matched with the split-type rice harvester in the embodiment is provided with the rice cutting device, the threshing device, the transfer grain bin and the lifting device, so that rice can be cut, threshed, stored and conveyed, the second rice cutting knife group cuts the upper rice ears, the rice ears are input into the threshing device for threshing, the amount of rice stalks entering the threshing device is reduced, and the threshing efficiency is improved; the first rice cutting knife set cuts rice stems, and proper rice pile height is reserved, so that rice roots can grow conveniently, and the yield of ratoon rice is improved.

The foregoing description of the specific exemplary embodiments of the invention has been presented for the purposes of illustration and description, and is not intended to limit the invention to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching, although examples of the invention have been illustrated and described, the present examples are intended to be illustrative of the invention and are not intended to be limiting of the invention, the particular features, structures, materials or characteristics described may be suitably combined in any one or more of the examples or illustrations, the examples being selected and described for the purpose of illustrating particular principles of the invention and their practical application, thereby enabling others skilled in the art to which this invention pertains to read this disclosure without departing from the principles and spirit of the invention, modifications, substitutions, variations and various alternatives and changes of the embodiments may be made as necessary without inventive contribution to the art, but are protected by patent laws within the scope of the claims of the present invention.

Claims (10)

1. The utility model provides a header with split type rice harvester is supporting, its characterized in that includes:

the device comprises a rack (1), wherein a grain cutting device (2) is arranged at one end of the rack (1), a transfer grain bin (3) is arranged at the other end of the rack (1), the grain cutting device (2) comprises a grain cutting bucket (21) with a bucket opening (22), a spiral roller (25) is arranged in the grain cutting bucket (21), a first grain cutting knife group (23) and a second grain cutting knife group (24) are arranged at the bucket opening (22), the first grain cutting knife group (23) is positioned below the second grain cutting knife group (24), and a grain poking wheel (26) is arranged above the second grain cutting knife group (24);

the threshing device (4) is arranged between the grain cutting device (2) and the transfer grain bin (3), a first conveying device (5) is arranged between the threshing device (4) and the grain cutting bucket (21), a second conveying device (6) is arranged between the threshing device (4) and the transfer grain bin (3), and a winnowing device (7) is arranged on the second conveying device (6);

the lifting device (8) comprises a lifting inlet (81) and a lifting outlet (82), the lifting inlet (81) is communicated with the interior of the middle grain bin (3), and a lifting spiral blade is arranged between the lifting inlet (81) and the lifting outlet (82).

2. The header as claimed in claim 1, wherein a branch shovel (28) is respectively arranged on each of two sides of the hopper opening (22), and the head of the branch shovel (28) extends obliquely downward to the outside of the hopper opening (22).

3. The header of claim 1, characterized in that an ear inlet (27) opposite to the opening (22) is opened on the inner wall of the grain cutting bucket (21), a first helical blade (251) and a second helical blade (252) are arranged on the periphery of the helical drum (25), the first helical blade (251) and the second helical blade (252) are respectively located on two sides of the ear inlet (27), and the rotation directions of the first helical blade (251) and the second helical blade (252) are opposite.

4. The header of claim 3, characterized in that the periphery of the spiral drum (25) is further provided with a plurality of spaced-apart separating blades (253), and the separating blades (253) are located between the first spiral blade (251) and the second spiral blade (252).

5. The header of claim 1, characterized in that the distance of the first group (23) of cutting blades to the horizontal direction of the spiral drum (25) is smaller than the distance of the second group (24) of cutting blades to the horizontal direction of the spiral drum (25).

6. The header of claim 5, characterized in that the first cutting group (23) comprises a first fixed tooth (231) and a first movable tooth (232), the first fixed tooth (231) is fixedly connected with the cutting hopper (21), and the first movable tooth (232) is slidably connected with the first fixed tooth (231); the second grass cutting knife group (24) comprises a second fixed knife tooth (241) and a second movable knife tooth (242), the second fixed knife tooth (241) is fixedly connected with the grass cutting bucket (21), and the second movable knife tooth (242) is connected with the second fixed knife tooth (241) in a sliding mode.

7. The header of claim 6, further comprising a knife group drive (9) comprising:

a driving wheel (91) which is rotationally connected with the grain cutting bucket (21);

one end of the driving rod (92) is provided with a first connecting end (921), the other end of the driving rod (92) is provided with a second connecting end (922) and a third connecting end (923), the first connecting end (921) is connected with the driving wheel (91) through a first crank (924), the second connecting end (922) is connected with the first movable cutter tooth (232) through a second crank (925), and the third connecting end (923) is connected with the second movable cutter tooth (242) through a third crank (926);

when the driving wheel (91) rotates, the first fixed cutter tooth (231) and the first movable cutter tooth (232) as well as the second movable cutter tooth (242) and the second fixed cutter tooth (241) can be driven to reciprocate simultaneously by the driving rod (92).

8. The header of claim 7, further comprising two rice poking rod assemblies (10), wherein the two rice poking rod assemblies (10) are symmetrically arranged between the first rice cutting blade group (23) and the spiral drum (25), each rice poking rod assembly (10) comprises a plurality of chain wheels (101), a chain (102) is sleeved outside each chain wheel (101), a plurality of poking rods (103) are arranged on the chain (102) at intervals, and one of the chain wheels (101) is connected with an output end of a poking rod motor (104).

9. The header of claim 3, wherein one end of the threshing device (4) is provided with an ear outlet (41), the other end of the threshing device (4) is provided with a grain outlet (42) and a straw outlet (43), a threshing cage (44) is arranged between the ear outlet (41) and the grain outlet (42), the first conveying device (5) is connected between the ear inlet (27) and the ear outlet (41), and the second conveying device (6) is connected between the grain outlet (42) and the transfer bin (3).

10. The header with split type rice harvester according to claim 9, wherein the air separation device (7) comprises an air inlet (71), a first air outlet (72) and a second air outlet (73), the air inlet (71) is communicated with the inside of the second conveyor (6), the first air outlet (72) is connected to the threshing device (4) and faces the straw outlet (43), and the second air outlet (73) faces the outside of the air separation device (7).

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