CN102972145B - Multi-purpose agricultural harvester - Google Patents

Abstract

The invention relates to a novel multi-purpose agricultural harvester, which includes the chassis of the harvester, a power device, a hydraulic system, an electrical device, and a driving operating system, and is characterized in that it also includes a detachable wheat harvesting system and a detachable corn harvesting system . The detachable wheat harvesting system includes: header (1) for harvesting wheat, inclined conveyor (2) for transporting wheat, grain tank (3), grain elevator (4), threshing system for separating wheat grains (5 ), connected sequentially from front to back. A detachable corn harvesting system, comprising a corn header, a stalk transporting device (3'), a corn straw husk separating device (6'), a corn storage bin (5'), and a corn ear elevator (4'). The multipurpose agricultural harvester described above can harvest wheat during the wheat ripening season, and after installing some devices, it can harvest corn during the corn harvest season, and tear the corn stalks into thin strips, shred the leaves and pulp, and discharge them separately And storage.

Description

Multipurpose Farm Harvester

technical field

The invention relates to a multi-purpose harvester and a using method thereof, in particular to a wheat combine harvester capable of harvesting corn, belonging to the field of agricultural machinery. This multi-purpose harvester can realize the harvesting of corn and wheat through simple replacement of parts, and complete the separation of straw and pulp while harvesting.

Background technique

Wheat and corn are the two major food crops in my country. The current status of wheat and corn harvesting mechanization is: wheat harvesters are highly specialized, can only harvest one season a year, have short operating hours, and the machines are parked for a long time. The investment in purchasing a corn harvester is large, and it can only harvest corn for one season. There is also the problem of long-term idleness of the machine.

CN2932967Y discloses a wheat combine harvester for simultaneously harvesting corn, which includes the chassis of the combine harvester, a power unit, an electrical device, a hydraulic system, a driving control system, a detachable wheat header for harvesting wheat, and a detachable wheat harvester. Detachable device, detachable wheat elevator, detachable wheat rear tailstock, among which: it also includes corn earing platform replaceable wheat header, corn elevator replaceable wheat elevator and corn setter The ear box is a detachable corn stalk returning machine located at the rear end of the chassis of the combine harvester; by replacing the wheat and corn harvesting parts, the wheat combine harvester can be used to the maximum, and the wheat and corn can be harvested separately to achieve one machine dual purpose.

Patent application 89106848.1 discloses a method and structure for refitting a self-propelled combine harvester into a wheat and corn multipurpose combine harvester. In the method, the corn header of the combine harvester is refitted, corn ears are harvested without threshing, and a set of corn stalk chopping device is added to return the stalks to the field. In this way, the mechanized harvesting of wheat and corn can be completed on one combine harvester only by changing the header, which not only improves the effective use time of the combine harvester but also reduces the agricultural investment in machinery.

CN201299006 discloses a corn harvester with interchangeable headers, which belongs to agricultural machinery, has a self-propelled wheat and rice combine harvester, and has a corn harvester suitable for the position of the self-propelled wheat and rice combine harvester. The ear picking platform is equipped with a corn ear elevator and an ear box. The elevator is bridged between the ear picking platform and the ear box. The ear box is fixed at the position of the grain box of the self-propelled wheat and rice combine harvester. The self-propelled wheat and rice The rear of the combine harvester is connected to the corn stalk returning machine. It can not only harvest wheat, rice, but also corn, and one machine can be used for multiple purposes, saving equipment resources.

The current corn harvester adopts the method of crushing corn stalks and returning them to the field, which is used as fertilizer after crushing. However, corn stalks are divided into several parts: straw skin, pulp, and leaves. Among them, the pulp and leaves can be used as land fertilizer after decay. The main component of the outer husk is fiber, which takes a long time to rot and cannot improve the soil. After the corn stalks are crushed and returned to the field, the soil is easy to swell and reduce the water storage capacity of the soil. Underused. Corn stalks can be used as raw materials for papermaking. If the husk, pulp and leaves of corn stalks are separated and dried in the sun, the utilization value of corn stalks will be further improved.

Contents of the invention

The purpose of the present invention is to aim at the deficiencies of the prior art, and provide a multipurpose harvester that can be used for wheat and corn with low cost and wide application range. The harvester can realize the conversion of wheat harvesting and corn harvesting by replacing a small number of parts, and, at the same time of harvesting, it can realize wheat threshing or corn stalk separation.

Technical scheme of the present invention is as follows:

A multi-purpose agricultural harvester includes a harvester chassis, a power device, a hydraulic system, an electrical device, and a driving operating system, and is characterized in that it also includes a detachable wheat harvesting system and a detachable corn harvesting and straw separation system.

Preferably, the detachable wheat harvesting system, as shown in Figure 1, includes: a header 1 for harvesting wheat, an inclined conveyor 2 for transporting wheat, a grain tank 3, a grain elevator 4, and a threshing system for separating wheat grains 5; header 1, inclined conveyor 2, threshing system 5, grain elevator 4, and grain tank 3 are connected sequentially from front to back.

Preferably, the threshing system 5 includes a roller and a sieve. When harvesting wheat, the harvester moves forward. After the wheat header cuts off the wheat in the field, it enters the inclined conveyor, and then the wheat is transported to the threshing system 5 by the inclined conveyor. Through the cooperation of the roller rotation of the threshing system 5 and the sieve, the threshing is completed, and the wheat grains fall from the holes on the sieve and are transported to the grain tank 3 through the grain elevator 4 to complete a harvesting operation.

Preferably, the threshing system 5 is also equipped with a fan 8; more preferably, a re-offline 9 is installed after the threshing system 5, and the re-offline 9 is connected to the grain elevator 4.

Preferably, there is a reel 7 on the header 1.

The above-mentioned parts are all detachable.

Preferably, the detachable corn harvesting and stalk separation system, as shown in Figure 2 and Figure 3, includes the following components:

The corn header, located at the front of the car body, includes a corn ear harvester (1') for harvesting corn and a stem harvester located under the corn ear harvester (1') for cutting and collecting corn stalks (2'),

The stem transporting device (3') is used for transporting corn stalks, and the front part is connected with the stem harvesting platform (2'),

The corn stalk husk separating device (6'), used for separating the husk and husk of the corn stalk, is located behind the stem conveying device (3'), and is connected to the corn header through the stem conveying device (3');

The corn storage bin (5') is located at the rear of the harvester and is used to hold corn ears; the corn ear elevator (4') is connected to the corn ear harvesting platform (1') and the corn storage bin (5').

Described corn harvesting platform, as shown in Figure 16, comprises picking ear cutting platform (1 '), harvesting stem cutting platform (2 '), picking ear harvesting platform (1 ') and harvesting stem cutting platform (2 ') by picking The ear harvesting platform support (37) and the adjusting oil cylinder (34) are connected by pin shafts, the ear harvesting platform (1') is located above the stem harvesting platform (2'), and the ear harvesting platform can be adjusted by adjusting the oil cylinder (34) height, wherein the ear harvesting platform has a reel chain (32) and an ear roller (33), and the stem harvesting platform includes a conveying auger (35) and a cutter (36), and the cutter is installed on the stem harvesting platform front end. As shown in Figure 9 and Figure 10, the included angle α between the cutter and the inner bottom surface of the harvesting head is between 15° and 20°, preferably 15°.

Described corn stalk losing device, as shown in Figure 15, comprises driving sprocket (26), driven sprocket (20), tensioning sprocket (24), movable arm ( 23) and the chain rake assembly (28), the chain rake assembly (28) walks around the driving sprocket (26), the driven sprocket (20) and leans on the tensioning sprocket (24) tensioning, the chain rake assembly ( 28) The conveying space is formed with the bottom plate of the stem conveying device housing (27); the corn stalks cut by the cutter are transported to the interior of the harvester by the rotation of the chain rake assembly (28) in this conveying space. Preferably, the movable arm (23) is installed on the driven sprocket (20); the driven sprocket (20) is equipped with a lower limit pin (21) and an upper limit pin (22) for fixing the driven sprocket (20). Chain rake assembly (28) claims again chain rake conveyor, comprises chain and rake bar, and chain and rake bar are connected with rivet or screw. The below of the corn stalk losing device is equipped with an oil cylinder support (25), and the oil cylinder support (25) fixes the corn stalk losing device on the car body. A polyethylene bracket (29) and a support (30) are installed below the chain rake assembly (28).

The corn cob elevator, as shown in Figure 17 and Figure 18, includes a housing, a conveying chain (41) and a supporting plate (40). The conveyor chain (41) and the supporting plate (40) are installed in the casing, and the elevator driving sprocket (44) and the elevator passive sprocket (42) are installed in the casing; the conveyor chain bypasses the elevator driving sprocket (44) and elevator passive sprocket (42), form conveying space with elevator housing, supporting plate (40) is installed on the conveying chain (41). The ear of corn falls on the pallet, and the ear of corn is transported to the corn storage bin with the rotation of the chain. As shown in Figure 17 and Figure 18. Preferably, the housing includes an upper housing (43) and a lower housing (45), and the upper housing and the lower housing are connected by bolts to the elevator for transporting the ears of corn picked off by the ear harvesting platform to the corn In order to make the elevator easy to install, the storage bin is divided into two sections, which are connected by flange bolts, which reduces the difficulty of installation.

The corn stalk husk separation device includes a drum and a sieve. The sieve (e) is arranged below the axial flow drum (d) along the length of the axial flow drum (d). There is a gap between the axial flow drum and the sieve, and the gap forms Straw separation space. As shown in Figure 2, Figure 3 and Figure 4. The sieve is a semicircular grid-like frame structure, and the holes of the grid-like frame formed are rectangular holes, which are suitable for falling irregular lumpy crumbs and flake-like leaves, as shown in Figures 9 and 10. The drum includes a support disc, a gear bar and spikes. The gear bar is in the shape of an oblong tube and is fixed on the outer circumference of the support disc. The spikes are fixed on the gear bar, as shown in FIGS. 5 and 6 .

Alternatively, the drum includes a supporting disc, a gear bar, a tooth bar, nail teeth, and plate teeth. Teeth, plate teeth, one end of the tooth bar is fixed with the threaded bar tooth, accounting for 10-45% of the length of the tooth bar; the other end of the tooth bar is fixed with the plate tooth, accounting for 10-45% of the length of the tooth bar; , accounting for 10 to 80% of the length of the gear rod, as shown in Figure 8. Alternatively, the drum includes a support disc, a gear bar, a tooth bar and a plate tooth, the tooth bar is an oblong tube type, and is fixed on the outer circumference of the support disc, and the bar teeth and the plate teeth are fixed on the tooth bar, such as Figure 7 shows.

The described bar teeth, nail teeth and plate teeth can all adopt the shapes of the prior art, and those skilled in the art can determine their size and length according to the common knowledge in this field and the structure and internal space of the harvester.

Preferably, the corn stalk husk separating device (6') is installed on the car body, and the harvesting frame (11) above it is equipped with a spiral deflector, and the spiral deflector (17) on the harvesting frame (11) The inner surface of the sieve (e) forms a substantially cylindrical tube concentric with the axial flow drum (d), and a straw separation space is formed between the cylindrical tube and the outer surface of the axial flow drum (d). Corn stalk husk separation device can be installed 1-3 sets.

Preferably, at the outlet (9') of the drum end (the end is relative to the side where the stalk enters the drum) of the corn stalk husk separation device (6'), a straw husk dispersion device (7' ), the feed port of the straw husk dispersing device is connected with the discharge port of the corn stalk husk separating device through bolts. It is used to break up thin strips of straw. As shown in Figure 1, Figure 2, Figure 3, Figure 4 and Figure 14. After the straw husk dispersing device, a straw husk collecting device can also be provided for collecting the straw husks.

Preferably, an anti-blocking device (8') is also provided, installed between the sieve e and the gap between the distribution auger 13. As shown in Figure 2, Figure 3, Figure 4 and Figure 14. The anti-blocking device is composed of a cleaning roller and a rotating shaft (a1). The cleaning roller is composed of a sleeve (a2) and round steel teeth (a3) distributed on the circumference of the sleeve. The cleaning roller and the rotating shaft pass through the set screw ( a4) Connection.

Because the present invention is relatively complicated, only the main content is described, and the parts not described in detail in the present invention can adopt the prior art.

The installation and use method of the multi-purpose agricultural harvester is that only the detachable wheat harvesting system is installed on the multi-purpose harvester, header (1), inclined conveyor (2), threshing system (5), grain elevator (4), grain The box (3) is connected sequentially from front to back to become a wheat harvester; the wheat harvester (1) is replaced with a corn harvester (1′) and stem harvester (2)′, and the inclined conveyor (2) is replaced Complete the stem transporting device (3)', remove the threshing system (5), the grain elevator (4), the grain tank (3), and install the corn ear elevator (4)' and the corn storage bin (5)' Install the roller and the sieve of the stalk husk dispersing device, install the stalk husk dispersing device (7) ' and the anti-blocking device (8) ' additionally, and adjust the shaking sieve plate to a closed state, and this equipment becomes a corn harvester.

The purpose of the multi-purpose agricultural harvester is used for wheat harvesting, and only the detachable wheat harvesting system is installed on the multi-purpose harvester. The header 1, the inclined conveyor 2, the threshing system 5, the grain elevator 4, and the grain tank 3 are connected sequentially from front to back. When harvesting wheat, the harvester moves forward, and the wheat header cuts off the wheat in the field, then enters the inclined conveyor, and then the inclined conveyor transports the wheat to the threshing system 5, through the cooperation of the roller rotation of the threshing system 5 and the sieve , complete the threshing, the wheat grains fall from the holes on the sieve and are transported to the grain tank 3 through the grain elevator 4 to complete a harvesting operation.

The purpose of the multi-purpose agricultural harvester is used for corn harvesting, and only the detachable corn harvesting system is installed on the multi-purpose harvester. The stem harvesting header (1′) at the lower part of the corn header is sequentially connected with the stem transporting device (3′) and the corn stalk husk separation device (6 ′), which is used for separating the husk and pulp of corn stalks; the ear picking at the upper part of the corn header The header (1') is sequentially connected with the corn ear elevator (4') and the corn storage bin (5') for picking and transporting the corn ears.

1. By replacing the wheat and corn harvesting parts, the wheat combine harvester can be used to the maximum, and the wheat and corn harvesting can be realized respectively, so as to achieve the purpose of one machine with two uses; using this utility model, the user can carry out spring harvesting without much investment. For operation in autumn and autumn, corn harvesting can be carried out only by replacing some parts of the wheat harvester, and the separation of straws can be realized. The economic and social benefits are very significant. 2. The new multi-purpose agricultural harvester described above can harvest wheat during the wheat ripening season, and after installing some devices, it can harvest corn during the corn harvest season, tear the corn stalks into thin strips, and tear up the leaves and pulp , discharge and storage respectively.

3. The multi-purpose harvester of the present invention can not only harvest wheat and corn, but also can divide corn stalks into strip-shaped stalk skins, irregular lumpy husks, and small-flaky leaves while harvesting corn, and discharge them separately, and After drying in the sun, they are sorted and utilized to increase the utilization value of the straw. Description of drawings

Fig. 1 is the structural representation when multipurpose agricultural harvester harvests wheat;

Fig. 2 and Fig. 3 are the structural representations when the multipurpose agricultural harvester harvests corn;

Fig. 4 is the schematic diagram of corn stalk conveying process;

Fig. 5 is a front view of a full-toothed drum, and Fig. 6 is a left view of a full-toothed drum;

Fig. 7 is a schematic diagram of a combined roller with rib teeth and plate teeth;

Fig. 8 is a schematic diagram of a combined roller with bar teeth, nail teeth and plate teeth;

Fig. 9 is a front view of a grid-shaped sieve, and Fig. 10 is a left view of a grid-shaped sieve;

Fig. 11 is the schematic diagram of anti-blocking device;

Figure 12 and Figure 13 are schematic diagrams of straw husk dispersion devices.

Fig. 14 is an enlarged view of the positional relationship of the corn stalk pulp separation device and the anti-blocking device;

Fig. 15 is a schematic diagram of the internal conveying structure of the stem transporting device;

Fig. 16 is the structural representation of the ear harvesting platform and the stem harvesting platform;

Fig. 17 is the front view of corn cob elevator,

Fig. 18 is the left view of corn ear elevator

in:

1. Wheat header, 2. Inclined conveyor, 3. Grain tank, 4. Grain elevator, 5. Wheat threshing system, 6. Cab, 7. Reel, 8. Fan, 9. Re-offline ;

1', ear harvesting platform, 2', stem harvesting platform, 3', stem delivery device, 4', corn ear elevator, 5', corn storage bin, 6', corn stalk husk separation device, 7 ', straw husk dispersing device, 8', anti-blocking device;

b. Chain rake assembly, c. Cutting flow drum, d. Axial flow drum, e. Sieve, f. Shaking sieve plate, g. Distributing auger 1, h, Distributing auger 2, i, fan;

a1, transmission shaft, a2, sleeve, a3, round steel tooth, a4, set screw;

b1, casing, b2, breaking blades, b3, rotating shaft;

11. Harvesting frame, 12. Anti-blocking device cleaning drum, 13. Distribution auger 1, 14. Distribution auger 2, 15. Sieve, 16. Drum, 17, Spiral deflector

20, passive sprocket, 21, lower limit pin, 22, upper limit pin, 23, movable arm, 24, tensioning sprocket, 25, oil cylinder support, 26, driving sprocket, 27, the housing of the stem transporting device, 28, chain rake assembly, 29, polyethylene bracket 30, bracket

31. Header shield, 32. Reeling chain, 33. Picking roller, 34. Regulating oil cylinder, 35. Conveying auger, 36. Cutter

40, pallet, 41, conveyor chain, 42, passive sprocket of elevator, 43, upper casing, 44, driving sprocket of elevator, 45, lower casing

A1, support disc, A2, gear rod, A3 nail teeth, A5 threaded rod teeth, A4 plate teeth

detailed description

Specifically, the utility model utilizes the chassis of the wheat combine harvester, power, electricity, hydraulic system, driving control system, etc., to harvest the special parts of the original wheat: header, threshing system, grain elevator 4, grain box 3 (see accompanying drawing 1), etc. are dismantled, and the special parts for corn are replaced: corn header, stalk conveying device 3', corn ear lifter 4', corn storage bin 5', corn stalk husk separation device 6' ( See accompanying drawing 2), just can realize corn ear picking, fruit ear conveying, header box, grain unloading and straw husk separation operation at one time, and the header of former wheat machine, threshing system, grain elevator 4, grain After parts such as box 3 are assembled and restored, wheat can be harvested again. Since the parts for harvesting wheat and corn are independent and do not affect each other, the structure, performance and operation effect of the original machine will not be damaged after replacement.

In one embodiment of the present invention, as shown in Figure 1, the multi-purpose harvester is used for wheat harvesting, and only the detachable wheat harvesting system is installed on the multi-purpose harvester. The header 1, the inclined conveyor 2, the threshing system 5, the grain elevator 4, and the grain tank 3 are connected sequentially from front to back. When harvesting wheat, the harvester moves forward, and the wheat header cuts off the wheat in the field, then enters the inclined conveyor, and then the inclined conveyor transports the wheat to the threshing system 5, through the cooperation of the roller rotation of the threshing system 5 and the sieve , complete the threshing, the wheat grains fall from the holes on the sieve and are transported to the grain tank 3 through the grain elevator 4 to complete a harvesting operation.

Wherein the wheat header 1 of the wheat harvester, the inclined conveyor 2, the grain elevator 4, the roller and the sieve of the threshing system 5 are all detachable, and the wheat header 1 is replaced with the corn ear picking header 1 ' and Stem harvesting platform 2', the inclined conveyor 2 is replaced by the stem conveying device 3', the corn ear lifter 4' and the corn storage bin 5' are installed, the roller and sieve of the straw husk dispersion device are added, and the straw is installed Peel dispersing device 7 ' and anti-blocking device 8 ', and the shaking sieve plate is adjusted to closed state, and this equipment just becomes corn harvester.

In another embodiment of the present invention, the multi-purpose harvester is used for corn harvesting, and only the corn harvesting system is detachable on the multi-purpose harvester. The stem harvesting header (1′) at the lower part of the corn header is sequentially connected with the stem transporting device (3′) and the corn stalk husk separation device (6 ′), which is used for separating the husk and pulp of corn stalks; the ear picking at the upper part of the corn header The header (1') is sequentially connected with the corn ear elevator (4') and the corn storage bin (5') for picking and transporting the corn ears.

When harvesting, the machine walks along the corn rows, the corn stalks are fed into the corn cutting platform, the ears are squeezed off by the ear picking platform 1′, and are transported to the corn storage bin (5′) by the corn ear elevator (4′). '), when the box is full, the hydraulic cylinder lifts the ear box to unload the grain; the stalk is pulled down by the harvesting platform (1'), and sent to the corn stalk husk separation device (6') through the stem delivery device (3') ), to separate the skin and pulp of the straw.

As shown in Fig. 2 and Fig. 3, it is the corn harvester structural diagram, comprises the corn ear harvesting platform (1 ') that is used for harvesting corn in front of the harvester, is positioned at the corn ear harvesting platform (1 ') below for Cutting and collecting corn stalk harvesting platform (2'), connected to the stalk harvesting platform (2') for transporting corn stalks and transporting device (3'), located at the rear of the harvester for containing corn ears The storage bin (5') and the corn ear lifter (4') connected to the corn ear harvesting platform (1') and the corn storage bin (5') are located at the discharge port on the operation side of the harvester drum to remove the thin strips of straw The straw husk dispersing device (7') for breaking up the husk is also provided with a corn stalk husk separating device (6') and an anti-blocking device (8') located on the operation side of the harvester drum to prevent the sieve from being blocked.

As shown in Figure 4, the schematic diagram of corn stalk transportation. During work, the ear rollers on the corn ear harvesting platform remove the corn ears from the upright corn stalks, and the corn ears enter the corn storage bin through the corn elevator. The straw is cut by the harvesting platform and enters the stem transporting device through the auger on the cutting platform. The straw is transported to the cut-off drum by the chain rake assembly in the stem transporting device, and the straw is thrown into the cutting-flow drum. The corn stalk husk separation device, with the rotation of the axial flow drum of the separation device, and under the guidance of the spiral deflector, the corn stalks perform spiral movement in the straw husk separation device. Under the cooperation of the axial-flow roller nail teeth and the sieve of the separation device, the corn stalks are repeatedly hit, turned and rubbed by the rotating nail teeth, and the corn stalks are torn and divided into thin strips of straw skin and irregular blocks. Crumb and small flaky leaves. Irregular lumpy crumbs and small pieces of leaves fall from the holes of the sieve, and are conveyed by the distribution auger to the shaking sieve plate behind the harvester. The crumbs and leaves are discharged from the rear of the harvester by the shaking of the fan and the shaking sieve Thin strips of straw skin enter the dispersion device at the outlet at the end of the axial flow drum, and then are dispersed by the straw skin dispersion device and then discharged to complete the operation.

The invention improves the utilization rate of the self-propelled wheat combine harvester, and by exchanging some parts for harvesting wheat and corn, one machine can be used for two purposes: both wheat and corn can be harvested, and two-season operations can be realized. The farmers can realize multiple benefits without more investment, which is conducive to improving farmers' enthusiasm for machine purchase and accelerating the implementation of corn harvesting mechanization.

Claims (7)

1. A multi-purpose agricultural harvester, comprising the chassis of the harvester, a power unit, a hydraulic system, an electrical device, and a driving operating system, is characterized in that it also includes a detachable wheat harvesting system and detachable corn harvesting and straw separation system; Detachable corn harvesting and straw separation system, including the following components: Corn header, located at the front of the vehicle body, includes a corn ear header (1´) for harvesting corn and a stem harvester located under the corn ear header (1´) for cutting and collecting corn stalks (2), Corn stalk conveying device (3´), used for transporting corn stalks, front connected to stalk harvesting head (2´), The corn stalk husk separation device (6´), used for the husk separation of corn stalks, is located after the corn stalk transporting device (3´), and is connected to the corn cutting platform through the corn stalk transporting device (3´); the corn stalk The peel and pulp separation device includes an axial flow drum and a sieve. The sieve (e) is arranged below the axial flow drum (d) along the length of the axial flow drum (d). There is a gap between the axial flow drum and the sieve, which forms a straw separation space; The corn storage bin (5´), located at the rear of the harvester, is used to hold corn ears; the corn ear elevator (4´) is connected to the corn ear harvesting platform (1´) and the corn storage bin (5´); The detachable wheat harvesting system includes: header for harvesting wheat (1), inclined conveyor for transporting wheat (2), grain tank (3), grain elevator (4), threshing system for separating wheat grains (5 ); header (1), inclined conveyor (2), threshing system (5), grain elevator (4), and grain tank (3) are connected sequentially from front to back. 2. The multi-purpose agricultural harvester as claimed in claim 1, characterized in that, the threshing system (5) is also provided with a fan (8); after the threshing system (5), a re-offline (9) is installed, Connect the grain elevator (4) after the off-line (9); the harvester (1) has a reel (7). 3. multipurpose agricultural harvester as claimed in claim 1, is characterized in that, described corn harvesting platform comprises corn ear harvesting platform (1 ') and stem harvesting platform (2 '), corn ear harvesting platform (1´) is connected with the stem harvesting platform (2´) by the ear harvesting platform bracket (37) and the adjustment oil cylinder (34) through the pin shaft, and the corn ear harvesting platform (1´) is located on the corn harvesting platform (2´ ), the height of the corn ear harvesting platform can be adjusted by adjusting the oil cylinder (34), wherein the corn ear harvesting platform has a reel chain (32) and ear picking rollers (33), and the stem harvesting platform includes a conveying auger ( 35) and the cutter (36), the cutter (36) is installed at the front end of the stem harvesting header (2´); the angle α between the cutter and the inner bottom surface of the stem harvesting header is between 15º and 20º; The corn stem transporting device includes a driving sprocket (26), a passive sprocket (20), a tensioning sprocket (24), a movable arm (23) and a chain rake assembly installed in the stem transporting device housing (27). into (28), the chain rake assembly (28) bypasses the driving sprocket (26), the passive sprocket (20) and is tensioned by the tension sprocket (24), the chain rake assembly (28) and the stem transporting device The bottom plate of the casing (27) forms a conveying space; the corn stalks cut by the cutter are transported to the interior of the harvester by the rotation of the chain rake assembly (28) in this conveying space; The movable arm (23) is installed on the driven sprocket (20); the lower limit pin (21) and the upper limit pin (22) are installed on the driven sprocket (20) for fixing the driven sprocket (20); the chain rake assembly (28) includes the chain and the rake bar, and the chain and the rake bar are connected by rivets or screws; An oil cylinder support (25) is installed under the corn stem transporting device, and the oil cylinder support (25) fixes the corn stem transporting device on the car body; a polyethylene bracket (29) is installed under the chain rake assembly (28) and bracket (30); The corn cob elevator includes an elevator housing, a conveying chain (41) and a pallet (40); the conveying chain (41) and the pallet (40) are installed in the elevator housing, and the elevator housing The elevator driving sprocket (44) and the elevator passive sprocket (42) are installed; the conveying chain bypasses the elevator driving sprocket (44) and the elevator passive sprocket (42), and the elevator The shell forms a conveying space, and the supporting plate (40) is installed on the conveying chain (41); the ear of corn falls on the supporting plate, and the ear of corn is transported to the corn storage bin with the rotation of the chain; the elevator shell It includes an upper shell (43) and a lower shell (45), and the upper shell and the lower shell are connected by bolts. 4. The multi-purpose agricultural harvester according to claim 2, characterized in that the corn stalk husk separation device (6´) is installed on the car body, and the harvesting frame (11) above it is equipped with a spiral guide The inner surfaces of the plates, helical deflectors (17) and sieves (e) on the harvester frame (11) form a roughly cylindrical barrel concentric with the axial flow drum (d), which is aligned with the outer surface of the axial flow drum (d). A straw separation space is formed between the surfaces. 5. The multipurpose agricultural harvester according to claim 4, characterized in that there are 1 to 3 sets of corn stalk husk separating devices. 6. The multi-purpose agricultural harvester according to claim 1, characterized in that, at the discharge port (9´) at the end of the axial flow drum of the corn stalk husk separation device (6´), there is also a straw husk Dispersion device (7´), the feed inlet of the straw husk dispersion device is connected with the discharge port of the corn stalk husk separation device by bolts, and is used to disperse the thin straw husks; an anti-blocking device ( 8´), installed in the gap between the sieve and the distribution auger (13); the anti-blocking device is composed of a cleaning roller and a rotating shaft (a1), and the cleaning roller is composed of a sleeve (a2) and a It consists of circular steel teeth (a3) distributed around the circumference, and the cleaning drum and the rotating shaft are connected by set screws (a4). 7. The use of a multipurpose agricultural harvester, characterized in that the multipurpose agricultural harvester according to any one of claims 1-6 is used for corn harvesting, and only detachable corn is installed on the multipurpose agricultural harvester Harvesting system; the stalk harvesting unit (2´) at the lower part of the corn stalk is connected to the corn stalk transporting device (3´) and the corn stalk husk separation device (6´) in turn, which is used for the husk separation of corn stalks; the corn stalk The upper corn ear harvesting platform (1´) is sequentially connected with the corn ear elevator (4´) and the corn storage bin (5´) for picking and transporting corn ears.