CN102301864A - Small size corn combine - Google Patents

Abstract

The invention relates to a small size corn combine. The corn combine comprises more than one harvesting unit and each harvesting unit comprises a clamping delivery mechanism for vertically delivering cornstalks from front to back, a snapping unit and a cornstalk shredding mechanism; the snapping unit comprises two snapping rollers which are horizontally arranged at the back low side of the corresponding clamping delivery mechanism and form a roller pair; and a guide opening for guiding roots of the cornstalks from the corresponding clamping delivery mechanism to the two snapping rollers is arranged between the front ends of two snapping rollers of the same snapping unit; and the cornstalk shredding mechanism is arranged under the corresponding snapping unit. According to the small size corn combine provided by the invention, the included angle between the cornstalks and the cornstalk shredding mechanism is increased to some extent, so that the crushed sections formed by cutting off the cornstalks are greatly shortened and the length of the crushed sections satisfies the requirement of directly returning the cornstalks back to the field.

Description

A kind of small-sized corn combine

Technical field

The present invention relates to agricultural mechanical field, especially a kind of small-sized corn combine.

Background technology

Corn is one of most widespread cereal crops in the world, extensively plants in China, is one of staple food crop of the Chinese north and mountain area, southwestern hills and other winterbourne area people.

Results are important steps of Maize Production.At present, in vast flat area, reaping corn machineryization degree improves day by day.The existing corn combine in market can be divided into single file machine, duplicate rows machine, multirow machine by the work capacity branch.Press power outfit form branch, can be divided into self-powered self-propelled, workpiece and be installed in backpack on the four-wheel tractor, towed by the four-wheel tractor towage.Its job content comprises plucks fringe, spike collecting, the processing of stem stalk, and main difference is to pluck fringe and stem stalk processing mode.Corn combine like existing a kind of duplicate rows results; Be through external power during its work; Be generally the dragging of tractor of 50-70 horsepower; Under travel condition with the corn straw in the place ahead from root cut off and through clamping convey device be delivered to backward one or two vertical be provided with pluck roller, the stem stalk directly is delivered to a grass chopper after plucking roller to pluck fringe and smashes through said; The simultaneously above-mentioned parts such as roller, grass chopper of plucking all are that engine by corresponding tractor drives running; Above-mentioned corn combine has obtained good application in the establishing in large scale area in Plain; But in vast knob; Owing to the restriction of reasons such as receiving that road is narrow, geographical complicated, the plot is little and the adjacent plot discrepancy in elevation is big, above-mentioned corn combine is difficult to apply; In addition, because above-mentioned combine uses described grass chopper to pulverize the stem stalk with the mode of smashing, therefore required power is very big, and is also higher relatively to the requirement of drive unit, and effect is than low.

For the narrow application range that solves above-mentioned corn combine and effect than low problem; Application number is that 200820112647.3 Chinese patent discloses a kind of hand steered single file corn picker; Said hand steered single file corn picker comprises hand tractor; The engine of said hand tractor is arranged at below thereafter through an engine support; Its front upper place is provided with the transfer gantry that becomes certain inclination angle with the bottom surface, and the transfer gantry back upper place is provided with speed-changing gear box; Be equipped with clutch on the said speed-changing gear box, pluck roller (pair roller) on vertical, the vertical roller (pair roller), correspondence plucked down be arranged at two chopper and the supporting plates of plucking after the roller; Chopper has a housing and parallel and rotate and to be assemblied in the interior movable knife disc of said housing with the said upper and lower roller of plucking; Movable knife disc is provided with moving knife; Housing has charging aperture near a said upper and lower side of plucking roller and is provided with the stationary knife with said moving knife corresponding matching in the charging aperture place; Transfer gantry is provided with two chains, and chain is provided with left and right backplate in (top) left and right sides correspondence; Said left and right backplate top is respectively arranged with retaining fringe plate, and right backplate right side is provided with side shield; The transfer gantry front upper place is provided with and a pair ofly holds up the standing grain railing, initiatively holds up standing grain wheel and the passive standing grain wheel of holding up; Main, the passive standing grain wheel of holding up holds up the standing grain band to be in transmission connection through one; The transfer gantry right side is equipped with universal support wheel through a wheel carrier; The transfer gantry left side is provided with maize cob collector, and the front lower place of transfer gantry is provided with reciprocating cutterbar; Said engine drives chopper, chain, master respectively, is turned round by movable sprocket, reciprocating type, main, passive standing grain wheel and the upper and lower roller of plucking held up through said clutch, speed-changing gear box; When above-mentioned hand steered single file corn picker is worked, under travel condition, drive chopper, chain, master, turned round by movable sprocket, reciprocating cutterbar, master, passive standing grain wheel and the upper and lower roller of plucking held up through engine and corresponding transmission mechanism; At first by holding up the standing grain railing that cornstalk top is imported; By holding up the standing grain band that the corn bottom is imported; The bottom was cut off by reciprocating cutterbar when cornstalk marched to reciprocating cutterbar; Top is transferred the chain clamping simultaneously; Cut cornstalk is transported to the standing position form under the effect of chain and is delivered to two and plucks between the roller; Promptly under the effect of carrier chain; Cornstalk and pluck and form an angle between the center line of roller; The cornstalk root at first gets into two and plucks between the roller, sheds on ground after moving up into the chopper and the section of being cut into behind the cornstalk; The corncob of when plucking the roller rotation, leaving behind from cornstalk drops on left and right backplate, is kept off the guiding of fringe plate and the entering maize cob collector.

Above-mentioned hand steered single file corn picker has solved the problem of the narrow application range of large-scale corn combine effectively; Change the stalk powder crushing device into shredding mechanism in addition, reduced the work required drive greatly, therefore in actual production, obtained using widely, but some problems in use also occurred.At first; Because the said roller of plucking is the vertical roller of plucking; And said chain is that standing position is carried to the conveying of cornstalk; Cut cornstalk in course of conveying all the time and pluck between the center line (pivot center) of roller and have an angle (less); Therefore cornstalk is when roller and corresponding chopper are plucked in entering and pluck an inclination angle is all arranged between roller and the chopper, and this has increased required drive on the one hand; Specifically; Promptly since cut cornstalk when getting into chopper all and be an angle between the rotation of the cutting knife of said chopper; Therefore the increase of the work area of the cutting knife of chopper; Promptly not radially the footpath bar is cut off along cornstalk; Thereby directly increased the required power of chopper work, increased energy consumption and the power of engine has been required also comparatively strict; On the other hand because cut cornstalk is less with the angle of the angle of the rotation of said chopper when getting into chopper, and the external diameter of each section of cornstalk differs, and therefore the footpath bar is not to get into along its length to pluck roller and chopper and speed instability; Thereby the length of the cornstalk that the cornstalk after causing being cut off forms broken section (often being the skin shape after the cutting in the reality) is inhomogeneous and whole inclined to one side length (because it is almost parallel with the axis of plucking roller to get into the cornstalk of plucking between the roller); Can't directly go back the field operation; Must do subsequent treatment through manual work, can't fundamentally handle cornstalk; Secondly; Because plucking roller is arranged at the said top that roller is arranged at transfer gantry of plucking; Therefore the fruit ear of being removed (corncob) can't in time be collected, and as the above, need at first fall on the left and right backplate after said retaining fringe plate can fall into maize cob collector collects; And corn is being thrown to said left and right backplate from plucking roller after being removed, and causes losing of part corncob unavoidably, even falls to said chain place and hinder conveying; In addition, drop on the ground, described side shield must be set, influenced the compactedness and the outward appearance of package unit in order to prevent fruit ear; And very inconvenience of the follow-up collection of fruit ear to building up to side shield and left and right backplate place; The 3rd; Since above-mentioned hand steered single file corn picker pluck roller and shredding mechanism is vertical; Therefore make the central whole of this grain header higher; Under the shock effect of shredding mechanism; Its use occasion often is the area of ground condition differences such as mountain region, hills in addition; Therefore overturn accident very easily takes place, and has also brought hidden danger for operating personnel's personal safety; The 4th, pluck roller and shredding mechanism blocks pilot's line of vision, make very inconvenience of driver behavior; At last,, therefore turn to very inconvenience, increased operator's labour intensity greatly because said support wheel is arranged at the right side of said transfer gantry; Very inconvenience when occasion little in some plot, that need frequently turn to is used.

Summary of the invention

The object of the present invention is to provide a kind of small-sized corn combine, to subtract broken section the long problem of length that existing small-sized corn combine cuts off corn footpath bar back formation that solves.

To solve the above problems, the present invention is small corn technical solution combines the following: A small corn combine harvester, harvesting unit comprises more than one, each of said harvesting unit includes a standing position for transport front to back clip cornstalk holding conveyor, snapping device and corn stalks chopped device, said device including snapping bedroom located in the corresponding clamping conveyor rollers after the formation of the bottom and two pick rollers, the same device snapping the front two pick rollers the correspondence between the holder for conveyor roots coming from corn stalks caused between the two pick rollers guide the mouth; said corn stalks lying chopping device located at the bottom of the device corresponds to snapping.

Said two pluck roller pivot center separately all extends along the throughput direction of corresponding clamping convey device.

The left side of said each ear-picking unit or right side are provided with corresponding maize cob collector, and each ear-picking unit is lower than the position of plucking roller away from corresponding maize cob collector near the position of plucking roller of corresponding maize cob collector.

Describedly respectively pluck boot segment, columniform fringe section and the columniform footpath section of drawing of plucking that roller includes the taper that concentricity successively from front to back line is connected; The said roller of respectively plucking all is provided with the spiral bar that is used for carrying backward corresponding stem stalk in its periphery of plucking the fringe section, and the periphery of Yu Qila footpath section upwards is provided with the straight burr muscle that extends along this pivot center direction of plucking roller.

Said cornstalk shredding mechanism comprises that housing and rotation are assemblied in the rotating shaft on the said housing, and the top of said housing has the charging aperture corresponding with corresponding ear-picking unit, and the bottom has discharging opening; Said rotating shaft be provided with one with the upper edge it radially disperses the handle of a knife of extension, described handle of a knife is provided with the chopping moving knife away from an end of rotating shaft, the charging aperture place of housing is provided with the chopping stationary knife with said chopping moving knife corresponding matching.

Two groups of driving and driven sprocket wheels that set up separately about said clamping convey device comprises and correspondingly be set around two clamping chains on said two groups of driving and driven sprocket wheels are formed for the clamp port of clamping cornstalk between said two clamping chains.

End spinning on described two driven sprockets respectively and be furnished with power transmission shaft; The lower end of said each power transmission shaft extends to said clamping convey device below and is equipped with the cutter sweep that is used to cut off cornstalk, and said cutter sweep comprises the cutting stationary knife that is fixed between two power transmission shafts and ends spinning and is assigned in the star moving knife on two power transmission shafts.

The upper end of described two power transmission shafts is all ended spinning and is furnished with initiatively rice-pulling chain wheel, and the front end of conveying plant is provided with corresponding driven rice-pulling chain wheel, is in transmission connection through a rice crop poking belt between the corresponding driving and driven rice-pulling chain wheel.

Described small-sized corn combine also comprises vehicle frame and drive unit; Be equipped with running gear on the said vehicle frame; Said drive unit is arranged at the rear portion of vehicle frame; The said clamping convey device of respectively gathering in the crops the unit and ear-picking unit are set in turn on the vehicle frame from front to back and transmission mechanism and drive unit through correspondence are in transmission connection, and described cornstalk shredding mechanism is arranged at the below of ear-picking unit and is in transmission connection with drive unit.

Described vehicle frame is the hand tractor vehicle frame, and described drive unit is arranged at the rear portion of vehicle frame through an engine support; The rear portion of vehicle frame is provided with universal wheel and driver's seat.

Since the present invention combines a small corn ear hook means of said two rollers lying hook provided at the rear of said clamping means below the conveyor in the same two snapping hook means is provided between the front roller to via coming from the corresponding conveying device gripping the root cause of the corn stalk rolls pick between two pilot port, and the corn stalk shredding said device is arranged in the lower portion of the corresponding snapping means, so the work can through the guided by the corresponding port clamping conveyor transported over the corn stalks standing root cause snapping device corresponds to two pick rollers, pick rollers in the process of snapping up the receiving conveyor fed corn stalks down to the corresponding cornstalks shredding means; as coming from the clamping conveyor corn stalks remain standing, the angle with the vertical plane and the horizontal angle is much less; therefore can be corn stalks and corn stalk chopping device corresponding position The angle between the cutting direction changed to nearly 90 degrees, which can greatly shorten the cut corn stalks after the formation of broken segments, so as to satisfy field directly requirements; addition, since the said snapping devices and corn stalks chopped devices are horizontal, thus reducing the overall harvester of gravity, making it run more smoothly and reliably, effectively avoid rollover accidents.

Description of drawings

Fig. 1 is the structural representation of the embodiment 1 of small-sized corn combine of the present invention;

Fig. 2 is the structural representation of the clamping convey device among Fig. 1;

Fig. 3 is the structural representation of the cutter sweep among Fig. 1;

Fig. 4 is the upward view of Fig. 3;

Fig. 5 is the structural representation of the ear-picking unit among Fig. 1;

Fig. 6 is ear-picking unit and the combination sketch map of cornstalk shredding mechanism among Fig. 1;

Fig. 7 is vehicle frame and the structural representation of drive unit among Fig. 1;

Fig. 8 is the transmission principle figure of the embodiment 1 of small-sized corn combine of the present invention;

Fig. 9 is the structural representation of the arrangement of clutch among Fig. 1.

Embodiment

The present invention is small corn combine harvester in Example 1, as shown in Figure 1 to 9, having a frame 11 (Figure 7), the frame 11 using the tractor frame, the frame 11 is fitted with a walking device 12 and thereafter the Ministry through a frame 13 is provided with casters 14, walking tractor itself means 12 to the wheel, caster 14 in the vertical plane can be rotated 360 degrees, wheel frame 13 by a support beam is provided with a seat 15, the caster 14 is provided on the rear frame 11, the frame 11 thus does not affect the steering during walking, reduce the operating force required for steering, reducing the intensity of work of the staff, in addition , the driver's seat 15 allows the operator more comfortable operation; frame 11 at the rear undercarriage 12 and caster 14 is also provided between the bracket 16 and the engine through the engine bracket 16 is provided with a drive 17, drive 17 diesel engine; undercarriage 12 and the drive means 17 of the gearbox itself by tractor 18 and the corresponding drive and transmission devices connected to the frame 11 is provided with a harvesting unit for harvesting maize, the harvesting unit has a hold transport means for snapping apparatus and corn stalk chopping device, the clamping device is arranged on the conveyor frame end 11, is used to cut corn stalks remain standing after transport from front to back, the clamping conveyor (Figure 2) has passed conveyor frame 19 is divided into two symmetrical right and left sides of the frame 11 of the conveyor 20, the outside of the conveyor have a guard cover, the front end of the conveyor frame and the lower frame 11 are disposed between the lift rod 21, the latter ends are fitted with a rotating shaft via a driving sprocket 22, the conveyor frame 19 on the plane of rotation of the drive sprocket, and the conveying frame are parallel to the surface of the upper, distal end of the stent are transported through the corresponding shaft 23 is provided with the corresponding The driven sprocket 24, the two conveyor 20 are located in the corresponding primary winding, a driven sprocket, the two adjacent conveyor 20 is formed between the side of the clamp for clamping the corn stalk port 25, conveying means of its gripping clamp at the front end opening 25 also has a supporting frame 55 Wo, on the conveyor frame 19 to the corresponding master, is arranged between the driven sprocket corresponding to the idle sprocket 26; other two conveyor bracket means 27 is also provided with a buffer, the buffer device 27 has a frame 11 along the lateral direction is set to the corresponding transfer activity on the plunger holder, ejector port 25 near one end of the clamp to the corresponding inner ring supported on the transport conveyor chain port 25 near the side of said holder; cushioning device 27 for the two nips formed between the conveyor 25 for different width of stalk diameter of corn stalks, corn stalks to avoid pinch-off; two transmission piercing the upper end of the shaft 23 are driven sprocket and the corresponding spin-ended initiative reel equipped with 28, two conveyor frame 19 to the corresponding active front of the reel rotation through the corresponding vertical shaft is equipped with a driven reel 29 , two vertical shaft are the top through the corresponding clamping device 30 is fixed, the top 30 by screw tightening means, when used can be adjusted to adjust the top tight means for the primary, driven reel distance between the driving and driven reel are the same chain, located on the same side of the driving and driven through the corresponding reel belt 31 drive connection dial Wo, Wo dial base portion 31 with a chain, the chain belt 31 Wo dial on the front side is provided for corn stalks released to dial between two conveyor 20 Wo claw, dial Wo band structure of the prior art are not described here; two piercing the lower end of the drive shaft 23 corresponding to the transport bracket is fitted with cutting device ( Figure 3-4), cutting device for cutting grain belt 31 from the allocation dial into the corn stalks, even in two by a solid shaft 23 between the cutting knife 32 and were given only two rotating shaft fitted in the bottom of the star 33 knife-shaped configuration, wherein the cutting blade 32 fixed to the left and right ends fixed respectively connected to the two driving shaft; work star fixed knife 33 is rotated with the cutting knife 32 with the corresponding cut off from the roots of corn stalks; snapping means (Figure 5) provided on the conveying device gripping the lower rear, a transmission case 34 and the rotating assembly of the transmission case 34 on the two pick rollers 35, two pick rollers 35 and the axis of rotation parallel to each other along a conveying device for conveying clamping direction; two pick rollers 35 through the rear transmission case 34 corresponding gear drive connected to form a pair of rollers; each pick rollers are sequentially from front to back with a solid connection with the center line of the guide cone segments, snapping paragraph and pull-diameter section, wherein the pick roller section and the ear hook are pulled cylindrical diameter section, and each section of the ear hook pick roller outer circumferential rib 36 having a helical pull the outer diameter section is provided along the circumferential direction of the pick roller the axis of rotation extending ribs 37 extending in the direction ruled; two pick rollers is formed between the respective guide section for guiding a port 38, port 38 is used to guide the delivery device by clamping the roots coming from the corn stalk pick roller 35 caused by the two room; snapping segment is used to drive along the corn stalks while doing pick roller 35 in the axial direction and the axial movement along the tangential direction tangential motion, axial movement prevents clogging pick rollers, the tangential movement aims snapping, a large part of the corn stalk segment completed in snapping snapping and leave the pick roller into the stalk of corn stalk chopping device, part of the stem segments by snapping into the pull stem, pull the stems into corn stalks are not axially movement, just pick roller tangential movement along quickly left the pick roll into corn stalks stalk chopping device; frame 11 to the right at the bottom of the device corresponds to snapping a set of spike box (not shown), set spike box by snapping device for collecting disassembly ear (ear of corn); two pick rollers in a box near the set of spike (the right one) is less than the height of the height of the other, so in order to pick rollers of the two formed between the box office has been set spike slope gradually downward sloping, so as to be removable ear of corn dropped into the collection box without losing ear; corn stalk shredding device (Figure 6) provided at the bottom of snapping device, has a housing 39, an upper housing 39 having a feed opening and the feed opening is provided with the chopper blade 40 fixed, the cutting device located at the feed inlet means of snapping the bottom two pick roller 35, the casing 39 lower portion of the discharge port, the other casing 39 is also fitted with a rotary shaft 41, the shaft 41 and the axis of two hook snapping device parallel to the axis of rotation of roller 35, the shaft 41 is fixedly connected in the circumferential direction handle 42, handle 42 from fixed end-to-end overhang is moving away from the axis of the shaft 41 and its end overhang knife 43 is equipped with a chopped, chopped knife blade 43 using chopped knife blade 43 extending along the direction of the axis of the shaft 41 extension.This embodiment of the transmission between the various components (Figure 8), first drive means 17 of the power transmitted through the belt and the frame undercarriage supporting the gearbox and the transmission input shaft through a pulley 44 transmitted to the clutch device , clutch device (Figure 9) includes a clutch shaft 45, the clutch shaft 45 through a fixed bearing 48 and the corresponding rotation of the bearing mounted on the frame 11, one end of the bearing air through the corresponding sleeve with said gearbox input shaft drive pulley 44 connected by a belt pulley 49, the clutch shaft 45 away from the end of the drive pulley 49 for rotating the driven pulley assembly 50, the clutch shaft 45 near one end of the drive pulley 49 is fitted with a clutch 51, clutch 51 is used jaw clutch, the clutch lever 52 controls the power-off the two axes, a power driven pulley 50 and the intermediate shaft 56 is connected through a belt drive, the intermediate shaft 56, respectively, force the power transmitted to the ear hook device provided in the transmission box on the power input shaft 53 and the gripping conveyor drive sprocket, snapping device by setting its gearbox on a power output shaft 54 of the power transmitted to the corn stalk shredding device shaft 41; drive sprocket Further the power transmitted to the driving reel, reel and driven cutting device, and ultimately drive organic whole device connection.This embodiment the work small corn combine harvester, the frame of the traveling state of the first clutch by operating the drive means to the power transmission means snapping, corn stalk chopping device, hold transport means, the cutting device and help Wo belt; with the help Wo under the action of the corn corn stalks to be dialed from the root to the cutting apparatus and is cut, the cut corn stalks forthwith oblique posture (transporting means and the holding direction perpendicular) to enter the clip conveying means for holding the mouth clamping front to back and are sandwiched two transport conveyor, corn stalks corresponding conveying means is conveyed to the rear clamping device after snapping the two pilot port cause the pick rollers and simultaneously and the holding means from the transport into the snapping roll unit between two pick corn pick roller lever under the action of snapping section while doing pick roller along the axial direction and in the tangential direction of the axial movement of the tangential motion, axial movement of the pick roller to prevent clogging tangential movement aims snapping, most of the corn stalk segment completed in snapping snapping and leave the pick roller into the stalk of corn stalk chopping device, part of the stem segments by snapping Pull into the stem, pull the stems into corn stalks without axial movement along only pick roller tangential motion, quickly left the pick rollers, corn stalks into the stalk chopping device; Because two pick rollers along the axis of rotation clip holding the conveying direction of the conveying means extending between the two pick rollers extending direction of the gap with the conveying direction of the conveying device holding the same, two pick rollers by corn stalk corn stalk shredding apparatus into the corn stalk shredding is still device where the knife cutting direction (presumably) vertical device into corn stalks chopped corn stalks are cut into radial segments, forming shorter pieces, and because the two pick roll speed is certainly , that means snapping feeding speed is constant, so that the corn stalks were broken off after the formation of uniform length, short and broken segments uniform field directly meet the requirements; pick rollers in two segments are snapping Abstract out of the corn in two pick rollers under the effect of the difference in height is set directly into the device at the bottom right of snapping spike box set collection, effectively preventing the lost ear problems.

In the foregoing description, can also on vehicle frame, be set up in parallel plural results unit from left to right successively, and transmission device and the drive unit of each results unit through correspondence is in transmission connection; Vehicle frame can also adopt the four-wheel tractor vehicle frame; Two of said ear-picking unit is plucked roller, and can also to be made as a right high left side low, in such cases, maize cob collector must be arranged at the lower left of ear-picking unit; The moving knife of cutter sweep can also be the disc type moving knife; Star identical with above-mentioned cutter sweep structure or disc type moving knife and stationary knife can also be set in the housing of said cornstalk shredding mechanism and above stationary knife, add corresponding guide plate or block, so as not to not Qie Duan after the top sideslip of stalk; Two of said ear-picking unit is plucked all right horizontal positioned of roller, and in such cases, the cornstalk shredding mechanism can move with plucking roller as required.

Claims (10)

1. small-sized corn combine; Comprise more than one and gather in the crops the unit; The said unit that respectively gathers in the crops includes clamping convey device, ear-picking unit and the cornstalk shredding mechanism that is used for the cornstalk of standing position conveying from front to back; It is characterized in that: said ear-picking unit comprises crouching to be located at the corresponding clamping convey device back lower place and to form two of pair roller plucks roller, and two of same ear-picking unit is plucked the root that has the cornstalk that is used for transmitting through corresponding clamping convey device between the front end of roller and caused this two guiding port of plucking between the roller; Described cornstalk shredding mechanism crouches and is located at the below of corresponding ear-picking unit.

2. small-sized corn combine according to claim 1 is characterized in that: said two pluck roller pivot center separately all extends along the throughput direction of corresponding clamping convey device.

3. small-sized corn combine according to claim 1; It is characterized in that: the left side of said each ear-picking unit or right side are provided with corresponding maize cob collector, and each ear-picking unit is lower than the position of plucking roller away from corresponding maize cob collector near the position of plucking roller of corresponding maize cob collector.

4. small-sized corn combine according to claim 1 is characterized in that: describedly respectively pluck boot segment, columniform fringe section and the columniform footpath section of drawing of plucking that roller includes the taper that concentricity successively from front to back line is connected; The said roller of respectively plucking all is provided with the spiral bar that is used for carrying backward corresponding stem stalk in its periphery of plucking the fringe section, and the periphery of Yu Qila footpath section upwards is provided with the straight burr muscle that extends along this pivot center direction of plucking roller.

5. small-sized corn combine according to claim 1; It is characterized in that: said cornstalk shredding mechanism comprises that housing and rotation are assemblied in the rotating shaft on the said housing; The top of said housing has the charging aperture corresponding with corresponding ear-picking unit, and the bottom has discharging opening; Said rotating shaft be provided with one with the upper edge it radially disperses the handle of a knife of extension, described handle of a knife is provided with the chopping moving knife away from an end of rotating shaft, the charging aperture place of housing is provided with the chopping stationary knife with said chopping moving knife corresponding matching.

6. small-sized corn combine according to claim 1; It is characterized in that: two groups of driving and driven sprocket wheels that set up separately about said clamping convey device comprises and correspondingly be set around two clamping chains on said two groups of driving and driven sprocket wheels are formed for the clamp port of clamping cornstalk between said two clamping chains.

7. small-sized corn combine according to claim 6; It is characterized in that: end spinning on described two driven sprockets respectively and be furnished with power transmission shaft; The lower end of said each power transmission shaft extends to said clamping convey device below and is equipped with the cutter sweep that is used to cut off cornstalk, and said cutter sweep comprises the cutting stationary knife that is fixed between two power transmission shafts and ends spinning and is assigned in the star moving knife on two power transmission shafts.

8. small-sized corn combine according to claim 6; It is characterized in that: the upper end of described two power transmission shafts is all ended spinning and is furnished with initiatively rice-pulling chain wheel; The front end of conveying plant is provided with corresponding driven rice-pulling chain wheel, is in transmission connection through a rice crop poking belt between the corresponding driving and driven rice-pulling chain wheel.

9. according to each described small-sized corn combine of claim 1～8; It is characterized in that: also comprise vehicle frame and drive unit; Be equipped with running gear on the said vehicle frame; Said drive unit is arranged at the rear portion of vehicle frame; The said clamping convey device of respectively gathering in the crops the unit and ear-picking unit are set in turn on the vehicle frame from front to back and transmission mechanism and drive unit through correspondence are in transmission connection, and described cornstalk shredding mechanism is arranged at the below of ear-picking unit and is in transmission connection with drive unit.

10. small-sized corn combine according to claim 9 is characterized in that: described vehicle frame is the hand tractor vehicle frame, and described drive unit is arranged at the rear portion of vehicle frame through an engine support; The rear portion of vehicle frame is provided with universal wheel and driver's seat.

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