CN201018784Y

CN201018784Y - Corn harvester

Info

Publication number: CN201018784Y
Application number: CNU2007200058525U
Authority: CN
Inventors: 赵英斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-03-16
Filing date: 2007-03-07
Publication date: 2008-02-13
Anticipated expiration: 2017-03-07

Abstract

The utility model relates to a corn reaper, comprising a frame and a transmission mechanism installed thereon. The frame comprises a vertical frame, an upper frame and a special shaped frame which are mutually connected, the transmission mechanism comprises a picking ear device, a transporting ear device, a transporting straw device and a cutting knife device, as well as a supporting grain sprocket and chain. The utility model corn reaper is installed on the motor vehicle such as tractor, reaps two ridges once when reaping, all levels of corn ear on the straw can be completely picked from the pedicle, picking thoroughly without breaking; cuts the straw from the lower part, the straw leaves keeps complete, and the height can be adjusted; two ridges of straw lays toward the same empty ridge direction and the direction can be adjusted; harvests back and forth at one side of the farmland without opening trip. The utility model can mate-using with the agricultural little quadricycle of over twenty horsepower, has high production efficiency, small consumed power, low cost and welcomed by individual farmer. The utility model also can mate with large locomotive, multi-ridge harvesting, the production efficiency is dozens of times of artificial.

Description

Corn picker

Technical field

The utility model relates to a kind of grain header, is on a kind of motor vehicle that is installed in tractor and so on specifically, can pluck corncob automatically and collect the corn picker of straw.

Background technology

Corn is one of China's staple food crop, and cultivated area is big, output height, particularly northern area.But the results of corn still are the original fringe of manually plucking, and reaping hook is cut the conventional method of straw, and is both time-consuming, misses the farming season again.A kind of type corn picker of returning crop stocks to the field is the corncob on the straw to be taken the back automatically transmit collection, simultaneously straw is pulverized, and directly scatters in the ground.According to the national conditions of China, the life fuel in vast rural area and animal feeding-stuff are based on straw, because the redevelopment of straw in recent years utilizes the development of technology, described straw is pulverized and directly scattered in the ground again, and waste is too unfortunate, and vast farmers is unacceptable.Thereby this grain header can not promote the use of in vast rural area always, and simultaneously, the corn snapping unit in the machine is imperfection very, damages the iblet on the corncob easily, influences the quality and the output of corn.

The utility model content

The technical problems to be solved in the utility model provides a kind of high efficiency corn grain header of laborsaving fast, complete recovery straw.

The utility model corn picker comprises frame and rack-mounted transmission mechanism, and its mid frame comprises stand, upper frame and special-shaped frame, and transmission mechanism comprises ear-picking unit, defeated fringe device, grain lifter, defeated straw device and cutter; The stand of vertically laying comprises a preceding left side, preceding correct frame and the preceding middle frame of interconnective afterframe, symmetry, correct frame is positioned on the same plane parallel with afterframe before a preceding left side, the preceding neutralization, and with the defeated straw passage that afterframe has constituted, constitute two inlets with defeated straw channel connection before a preceding left side, the preceding neutralization between the correct frame; Upper frame comprises top frame that level is laid and the frid that is fixed therein, and the baffle plate on both sides, and the front end of top frame is fixedlyed connected with the upper end of stand; Special-shaped frame comprises the left and right frame and the central frame of symmetry, the left side, centre, the right framework include two upper side frames and two lower frames, and interconnect by connecting rod again after the front end of every pair of described upper and lower frame is fixedly connected, and every upper side frame all is inclined upwardly backward and lays, every all downward-sloping backward the laying of lower frame, fixedly connected with correct frame before a corresponding preceding left side, the preceding neutralization respectively in the rear end of upper and lower frame; Two parallel straw passages that advance that constitute between the left side, centre, the right framework are communicated with defeated straw channel vertical by inlet respectively, and the front end of on the left side, centre, the right framework is provided with the horn mouth that expands outwardly each other; Be equipped with backplate at the medial surface that advances straw passage, defeated straw passage; Defeated fringe device comprises a pair of tassel-conveying chain bar that is installed on the top frame, laterally connect several screeding devices between the tassel-conveying chain bar, the transmission main shaft of tassel-conveying chain bar is installed in the top frame rear end, and is connected driving by the head sprocket that is fixed on main shaft one end with the power set of motor vehicle rear; The A transition axis of tassel-conveying chain bar middle frame top before being installed in and the B transition axis of its below, after being installed in steering spindle on the lower frame and turning to, the D transition axis of the C transition wheel of middle frame below and its top before being installed in again, portion's direction is back and forth rotated backward from the front portion; The baffle plate on corresponding frid and both sides also extends forward downwards and fixing along the tassel-conveying chain bar; Ear-picking unit comprises a pair of snapping bar and laterally is installed in the power transmission shaft of central frame front portion; Power transmission shaft is rotationally connected by sprocket wheel chain and steering spindle, bevel gear all is equipped with at two ends at power transmission shaft, described bevel gear and another bevel gear engagement that is installed in the snapping bar front end, snapping bar is respectively along two installed inside of advancing the straw channel direction, and two snapping bar axis are positioned on the same plane that becomes 30 °～40 ° of angles with horizontal plane; Tooth sector also is equipped with at two ends at the D transition axis, tooth sector respectively with the power shaft of the left and right gearbox that is installed in stand top on gears engaged; The rear output shaft of right gearbox is connected with the defeated straw device that is installed in the afterframe middle and lower part downwards, in the afterframe bottom cutter that is connected with defeated straw device is housed also, and the support that is connected with motor vehicle front end is housed on afterframe top.

The utility model corn picker, wherein snapping bar comprises the spindle nose that hollow shaft and two ends are connected as a single entity with it, on the external diameter of hollow shaft, along axis direction, be mutually 120 ° of fixedly connected three trapezoidal wing plates of angle, the free margins of trapezoidal wing plate is that circular arc changes the limit, and the bearing block that snapping bar is rotationally connected by the spindle nose with two ends is fixed on the upper side frame of central frame.

The utility model corn picker, wherein screeding device comprises scraper plate and scraper shaft, scraper plate two ends on one side are connected with scraper shaft by a pair of engaging lug that is connected as a single entity respectively, on the scraper shaft between every pair of engaging lug, be respectively installed with roll sleeve down, and the middle part on this limit forms breach, the middle part of scraper plate another side also forms breach, in breach, be provided with parallel with scraper shaft on roll sleeve; The oblique baffle plate of fixing on one side direction of the middle part on the scraper shaft, the baffle plate upper end contacts with scraper plate, and angle is 12 °～17 ° between two planes; Be respectively installed with torsion spring on the scraper shaft that is positioned at the baffle plate left and right sides, an end and the baffle plate of torsion spring link, and its other end and scraper plate link; The two ends of scraper shaft by L type connector respectively with vertical connection of tassel-conveying chain bar on both sides.

The utility model corn picker, wherein defeated straw device comprises commutator and the left and right power transmission shaft that is connected transmission with three defeated straw chains; Commutator is installed in the middle part on afterframe right side, and its power shaft one end is fixedlyed connected with the rear output shaft of right gearbox by back link, and its other end is by the gears engaged on gear and right power transmission shaft top; Right power transmission shaft vertically is fixed on the bottom on afterframe right side, and is connected transmission by the defeated straw chain that is placed in its three positions, upper, middle and lower with the Left Drive axle that is placed in bottom, afterframe left side respectively; Outwards evenly distribute on defeated straw chain and fix several driving levers, driving lever stretches in the defeated straw passage.

The utility model corn picker, wherein cutter comprises high speed transmission, left and right cutter shaft and blade; High speed transmission is installed in the bottom on afterframe right side, the fixed gear engaged transmission of its input gear and right power transmission shaft bottom, after the multi-stage gear speed change, with the meshed transmission gear on the right cutter shaft that is installed in the afterframe lower right side, right cutter shaft top is connected transmission with the cutter chain with the left cutter shaft that is installed in bottom, afterframe left side by sprocket wheel; Left and right cutter shaft is over against inlet, and its bottom is connected with blade is vertical, and blade stretches on the bottom of defeated straw passage.

The utility model corn picker, wherein grain lifter comprises sprocket wheel and the seeding supporting chain bar that two ends are in transmission connection on the upper side frame that is installed in left and right frame, the sprocket wheel on the right is fixedlyed connected with the front output shaft of right gearbox with right connecting rod by universal joint, and the sprocket wheel on the left side is fixedlyed connected with the output shaft of left gearbox with left connecting rod by universal joint; The seeding supporting chain bar on left and right both sides all is positioned at the snapping bar top and becomes on the same plane of 30 °～40 ° of angles with horizontal plane, and install along two outsides of advancing the straw channel direction respectively, and two seeding supporting chain bars by forward direction after, mutual reciprocal rotation, the driving lever that connects on the seeding supporting chain bar stretches in the straw passage.

The utility model corn picker wherein is equipped with hydraulic cylinder between support and motor vehicle front end.

The utility model corn picker, wherein the rear end lower at top frame is provided with the collecting box that is connected with motor vehicle.

The utility model corn picker is installed on the motor vehicle of tractor and so on, is provided with the defeated straw device of unique ear-picking unit, defeated fringe device, grain lifter and band cutter etc.During harvesting, once gather in two ridges, the corncob that height does not wait on the straw can both all be taken from the base of a fruit, and it is thorough to pluck fringe, not broken grain, cut off straw from the lower end, the bar leaf is kept perfectly, and is highly also adjustable, two ridge straws are put the shop to same empty ridge side direction, and direction is adjustable, can gather in back and forth in the side of ploughing, and need not open time.Supporting with the agricultural handcar more than 20 horsepowers, the production efficiency height, consumed power is little, and cost is low, is subjected to peasant farmer's welcome deeply.Also can be supporting with large automobile, the harvesting of many ridges, production efficiency is artificial tens times.

Description of drawings

Fig. 1 is the utility model corn picker structural principle schematic diagram;

Fig. 2 is the schematic top plan view of Fig. 1;

Fig. 3 is defeated fringe device and an ear-picking unit drive mechanism schematic diagram in the utility model;

Fig. 4 is the schematic top plan view of Fig. 3;

Fig. 5 is defeated straw device and a grain lifter drive mechanism schematic diagram in the utility model;

Fig. 6 is the schematic top plan view (top that does not comprise stand) of Fig. 5;

Fig. 7 looks schematic diagram (top that does not comprise stand) for the right side of Fig. 5;

Fig. 8 is a snapping bar structural representation in the utility model;

Fig. 9 looks schematic diagram for the left side that Fig. 8 is;

Figure 10 is a snapping bar working condition schematic diagram (right snapping bar) in the utility model;

Figure 11 is that the utility model middle scraper device is installed the connection status schematic diagram;

Figure 12 is Figure 11 middle scraper apparatus structure schematic diagram;

Figure 13 looks schematic diagram for the left side of Figure 12;

Figure 14 is defeated straw chain (seeding supporting chain bar) and a driving lever connection status schematic diagram in the utility model;

Figure 15 looks schematic diagram for the right side of Figure 14.

Embodiment

By Fig. 1～Fig. 6 as seen, the utility model corn picker comprises frame and rack-mounted transmission mechanism, and its mid frame comprises interconnective stand, upper frame and special-shaped frame; The stand of vertically laying comprises the preceding left frame 2, preceding correct frame 2 of interconnective afterframe 1, symmetry ' and preceding middle frame 3, on the parallel same plane of correct frame 2,3,2 before the wherein preceding left side, preceding neutralization ' be positioned at and afterframe 1, and the defeated straw passage 4 that has constituted with afterframe 1, and correct frame 2,3,2 before the preceding left side, preceding neutralization ' between constitute two inlets 5 that are communicated with defeated straw passage 4; Upper frame comprises the top frame 6 that level is laid and is fixed on slot in frames plate 7, and the baffle plate on both sides, and the front end of top frame 6 is fixedlyed connected with the upper end of stand; Special-shaped frame comprises the left side of symmetry, the right framework 8,8 ' and central frame 9, the left side, middle, the right framework 8,9,8 ' include two upper side frames 10 and two lower frames 11, and on every pair, lower frame 10, be connected to one by many connecting rods again after 11 front end is fixedly connected, and every upper side frame 10 all be inclined upwardly backward 35 ° (with horizontal direction) install, every lower frame all downward-sloping backward 2.5 ° (with horizontal direction) is installed, on, lower frame 10,11 rear end is respectively with corresponding preceding left, correct frame 2 before the preceding neutralization, 3,2 ' fixedly connected, constitute leg-of-mutton profiled frame; The left side, centre, the right framework 8,9,8 ' between constitute two parallel advance straw passage 4 ', and respectively by inlet 5 and defeated straw passage 4 vertical connections, on the left side, centre, the right framework 8,9,8 ' front end be provided with the horn mouth that expands outwardly each other; Advance straw passage 4 ', defeated straw passage 4 medial surfaces are equipped with backplate.The transmission mechanism of installing on frame comprises ear-picking unit, defeated fringe device, defeated straw device and cutter, and the seeding supporting chain of transmission wheel chain.Rear end lower at top frame 6 is provided with the collecting box 49 that is connected with motor vehicle.

During the utility model reaping corn machine operation, it must be connected with the motor vehicle of agricultural little four-wheel and so on, promptly be provided with the support 27 that is connected with motor vehicle front end, between support 27 and motor vehicle front end, be vertically installed with hydraulic cylinder 48 on afterframe 1 top; Simultaneously, the head sprocket 12 that is installed in transmission main shaft 15 1 ends of top frame 6 rear ends is connected driving with the power set of motor vehicle rear; Top frame 6 is also fixedlyed connected with motor vehicle by support link, so that job run is more reliable and more stable.Hydraulic cylinder 48 can be regulated the height of grain header front portion far from ground, promptly regulates the height that cuts stubble.Two are advanced straw passage 4 ' over against two ridge corn straws, motor vehicle is advanced forward, corn stalk be arranged in into straw passage 4 ', by the corncob of the snapping bar 22 that rotates with different height on the straw, after fractureing, the fringe base of a fruit falls on the frid 7, by the screeding device 14 that is connected with tassel-conveying chain bar 13 corncob of all taking upwards is sent to the rear portion at top from the front portion, and in the collecting box 49 of packing into.

Wherein defeated fringe device comprises a pair of tassel-conveying chain bar 13 that is installed in the top frame 6, laterally vertical several screeding devices 14 that connect between this tassel-conveying chain bar 13, the transmission main shaft 15 of tassel-conveying chain bar 13 is installed in top frame 6 rear ends, and is connected driving by the head sprocket 12 that is fixed on main shaft 15 1 ends with the power set at locomotive rear portion; The A transition axis 16 of tassel-conveying chain bar 13 middle frame 3 tops before being installed in and the B transition axis 17 of its below, after being installed in steering spindle 18 on the lower frame 11 and turning to, the D transition axis 20 of the C transition wheel 19 of middle frame 3 belows and its top before being installed in again, portion's direction is back and forth rotated backward from the front portion; The baffle plate on corresponding frid 7 and both sides also extends forward downwards and fixing along tassel-conveying chain bar 13.Ear-picking unit comprises a pair of snapping bar 22 and laterally is installed in the power transmission shaft 21 of central frame 9 front portions; Power transmission shaft 21 is rotationally connected by sprocket wheel chain and steering spindle 18, bevel gear 23 all is equipped with at two ends at power transmission shaft 21, bevel gear 23 and another bevel gear engagement that is installed in snapping bar 22 front ends, snapping bar 22 is respectively along two installed inside of advancing straw passage 4 ' direction, and two snapping bar 22 axis are positioned on the same plane that becomes 35 ° of angles with horizontal plane.Snapping bar 22 comprises the spindle nose 38 that hollow shaft 37 and two ends are connected as a single entity with it, on the external diameter of hollow shaft 37, along axis direction, be mutually 120 ° of fixedly connected three trapezoidal wing plates 39 of angle, the free margins of trapezoidal wing plate 39 is that circular arc changes the limit, and the bearing block that snapping bar 22 is rotationally connected by the spindle nose 38 with two ends is fixed on the upper side frame 10 of central frame 9.Two snapping bars 22 are picked corncob, as Fig. 8～Figure 10 by the rightabout rotation in the middle of export-oriented.

Figure 11～Figure 13 is the structure and annexation schematic diagram of screeding device 14: its middle scraper 40 two ends on one side are connected with scraper shaft 41 by a pair of engaging lug 42 that is connected as a single entity respectively, on the scraper shaft between every pair of engaging lug 42 41, be respectively installed with roll sleeve 43 down, and the middle part on this limit forms breach, the middle part of scraper plate 40 another sides also forms breach, in this breach, also be provided with parallel with scraper shaft 41 on roll sleeve 44; The oblique baffle plate 45 of fixing on one side direction of the middle part on the scraper shaft 41, baffle plate 45 upper ends contact with scraper plate 40, and angle is 15 ° between two planes; Be positioned on the scraper shaft 41 on limit, baffle plate 45 left and right sides and be respectively installed with torsion spring 46, an end and the baffle plate 45 of torsion spring 46 link, and its other end and scraper plate 40 link; The two ends of scraper shaft 41 by L type connector 47 respectively with 13 vertical connections of tassel-conveying chain bar on both sides.When scraper plate 40 moves on the frid 7 of top frame 6, central frame 9 and preceding middle frame 3, the scraper plate 40 that torsion spring 46 chuckings are supported by baffle plate 45, continue again to transmit after corncob is delivered to upper frame to the rear portion, and when moving between A transition axis 16 above preceding middle frame 3 and the B transition axis 17 below it, force scraper plate 40 to be folded to chain, from the back side of frid 7 and the gap between the preceding middle frame 3, move, leave B transition axis 17 backs and reset by torsion spring 46 and erect.

Enter into straw passage 4 ' when plucking fringe at corn, in order to make straw upright, also be provided with grain lifter, wherein the driving lever on the seeding supporting chain bar 35 is helped corn and is entered synchronously, wing plate 39 on the snapping bar 22 that helps rotating is plucked each corncob disconnected by means of the reaction force of seeding supporting chain bar 35 from the base of a fruit.Grain lifter be left and right frame 8,8 ' upper side frame 10 on two ends sprocket wheel and the seeding supporting chain bar 35 that is in transmission connection is housed respectively, the sprocket wheel on the right by universal joint and right connecting rod 36 ' with right gearbox 25 ' front output shaft fixedly connected, and the sprocket wheel on the left side is fixedlyed connected with the output shaft of left gearbox 25 with left connecting rod 36 by universal joint; The seeding supporting chain bar 35 on left and right both sides all is positioned at snapping bar 22 tops, becomes with horizontal plane on the same plane of 35 ° of angles, and install along two outsides of advancing straw passage 4 ' direction respectively, and two seeding supporting chain bars 35 by behind the forward direction, mutual reciprocal rotation, the driving lever that on seeding supporting chain bar 35, is provided with stretch to into straw passage 4 ' in; And be installed in the left and

right gearbox

25,25 on stand top ' be the tooth sector of installing by at D transition axis 20 two ends 24, after the tooth sector engagement on left and right gearbox 25, the 25 ' power shaft, carry out transmission respectively.

Under the propelling of motor vehicle, the corn of having plucked fringe 5 enters in the defeated straw passage 4 from entering the mouth, and the blade 33 of two high speed rotating cuts off each self-corresponding straw from the bottom.By the driving lever 30 on the defeated straw chain 29 straw is laterally outputed to grain header one side, so that concentrate bundling to transport.In order to adapt to the harvesting of working continuously back and forth, straw output is put the shop direction and can be adjusted by commutator 28, straw is put be layered on the vacant lot that has gathered in the crops.

As shown in Figure 7, defeated straw device comprise commutator 28 and the left and right

power transmission shaft

30,30 that is connected transmission with three defeated straw chains 29 '; Commutator 28 is installed in the middle part on afterframe 1 right side, its power shaft one end by back link 26 and right gearbox 25 ' rear output shaft fixedly connected, its other end is by the gears engaged on gear and right power transmission shaft 30 ' top; Right power transmission shaft 30 ' vertically be fixed on the bottom on afterframe 1 right side, and be connected transmission by the defeated straw chain 29 that is placed in its three positions, upper, middle and lower with the Left Drive axle 30 that is placed in bottom, afterframe 1 left side respectively; Outwards evenly distribute on defeated straw chain 29 and fix several driving levers 50, see Figure 14, Figure 15, driving lever 50 stretches in the defeated straw passage 4.

Wherein cutter comprises high speed transmission 31, left and right cutter shaft 32,32 ' and blade 33; High speed transmission 31 is installed in the bottom on afterframe 1 right side, the fixed gear engaged transmission of its input gear and right power transmission shaft 30 ' bottom, after the multi-stage gear speed change, with the right cutter shaft 32 that is installed in afterframe 1 lower right side ' on meshed transmission gear, right cutter shaft 32 ' top is connected transmission with cutter chain 34 with the left cutter shaft 32 that is installed in bottom, afterframe 1 left side by sprocket wheel; Left and right cutter shaft 32,32 ' respectively is over against inlet 5, its bottom and 33 vertical connections of blade, and blade 33 stretches on the bottom of failing straw passage 4.

Claims

1. a corn picker comprises frame and rack-mounted transmission mechanism, it is characterized in that described frame comprises stand, upper frame and special-shaped frame, and described transmission mechanism comprises ear-picking unit, defeated fringe device, defeated straw device, grain lifter and cutter; The described stand of vertically laying comprises a preceding left side, preceding correct frame (2,2 ') and the preceding middle frame (3) of interconnective afterframe (1), symmetry, correct frame (2,3,2 ') is on a plane parallel with described afterframe (1) before a described preceding left side, the preceding neutralization, and with the defeated straw passage (4) that described afterframe (1) has constituted, constitute two inlets (5) that are communicated with described defeated straw passage (4) before a described preceding left side, the preceding neutralization between the correct frame (2,3,2 '); Described upper frame comprises top frame (6) that level is laid and the frid (7) that is fixed therein, and the baffle plate on both sides, and the front end of described top frame (6) is fixedlyed connected with the upper end of described stand; Described special-shaped frame comprises the left side of symmetry, the right framework (8,8 ') and central frame (9), the described left side, middle, the right framework (8,9,8 ') include two upper side frames (10) and two lower frames (11), and every pair described on, lower frame (10,11) interconnect by connecting rod again after front end is fixedly connected, and every described upper side frame (10) all is inclined upwardly backward and lays, every described lower frame (11) is all downward-sloping backward to be laid, described on, lower frame (10,11) rear end is respectively with corresponding described preceding left, correct frame (2 before the preceding neutralization, 3,2 ') fixedly connected; Constitute between the described left side, centre, the right framework (8,9,8 ') two be parallel to each other advance straw passages (4 ') respectively by described inlet (5) and described defeated straw passage (4) vertical connection, on the described left side, the front end of centre, the right framework (8,9,8 ') is provided with the horn mouth that expands outwardly each other; Be equipped with backplate at the described medial surface that advances straw passage, defeated straw passage (4 ', 4); Described defeated fringe device comprises a pair of tassel-conveying chain bar (13) that is installed on the described top frame (6), laterally connect several screeding devices (14) between the described tassel-conveying chain bar (13), the transmission main shaft (15) of described tassel-conveying chain bar (13) is installed in described top frame (6) rear end, and is connected driving by the head sprocket (12) that is fixed on described main shaft (15) one ends with the power set of motor vehicle rear; Described tassel-conveying chain bar (13) around be installed in described before the A transition axis (16) and the B transition axis (17) below it of middle frame (3) top, after being installed in steering spindle (18) on the described lower frame (11) and turning to, again through be installed in described before the C transition wheel (19) and the D transition axis (20) above it of middle frame (3) below, portion's direction is back and forth rotated backward from the front portion; The baffle plate on corresponding described frid (7) and both sides also extends forward downwards and fixing along described tassel-conveying chain bar (13); Described ear-picking unit comprises a pair of snapping bar (22) and laterally is installed in the anterior power transmission shaft (21) of described central frame (9); Described power transmission shaft (21) is rotationally connected by sprocket wheel chain and described steering spindle (18), at the two ends of described power transmission shaft (21) bevel gear (23) is housed all, described bevel gear (23) and another bevel gear engagement that is installed in described snapping bar (22) front end, described snapping bar (22) is respectively along two described installed inside of advancing straw passage (4 ') direction, and two described snapping bars (22) axis is positioned on the same plane that becomes 30 °～40 ° of angles with horizontal plane; At the two ends of described D transition axis (20) tooth sector (24) is housed also, described tooth sector (24) respectively with the power shaft of the left and right gearbox that is installed in described stand top (25,25 ') on gears engaged; The rear output shaft of described right gearbox (25 ') is connected with the described defeated straw device that is installed in described afterframe (1) middle and lower part downwards, in described afterframe (1) bottom the described cutter that is connected with described defeated straw device is housed also; Be provided with the support (27) that is connected with motor vehicle front end on described afterframe (1) top.

2. corn picker according to claim 1, it is characterized in that described snapping bar (22) comprises the spindle nose (38) that hollow shaft (37) and two ends are connected as a single entity with it, on the external diameter of described hollow shaft (37), along axis direction, be mutually 120 ° of fixedly connected three trapezoidal wing plates of angle (39), the free margins of described trapezoidal wing plate (39) is that circular arc changes the limit, and the bearing block that described snapping bar (22) is rotationally connected by the described spindle nose (38) with two ends is fixed on the described upper side frame (10) of described central frame (9).

3. corn picker according to claim 1, it is characterized in that described screeding device (14) comprises scraper plate (40) and scraper shaft (41), described scraper plate (40) two ends on one side are connected with described scraper shaft (41) by a pair of engaging lug (42) that is connected as a single entity respectively, on the described scraper shaft (41) between every pair of described engaging lug (42), be respectively installed with roll sleeve (43) down, and the middle part on this limit forms breach, the middle part of described scraper plate (40) another side also forms breach, is provided with the last roll sleeve (44) parallel with described scraper shaft (41) in breach; Left side, middle part on described scraper shaft (41) is upward to fixing a baffle plate (45), and described baffle plate (45) upper end contacts with described scraper plate (40), and angle is 12 °～17 ° between two planes; Be positioned on the described scraper shaft (41) on described baffle plate (45) limit, the left and right sides and be respectively installed with torsion spring (46), an end of described torsion spring (46) and described baffle plate (45) link, and its other end and described scraper plate (40) link; The two ends of described scraper shaft (41) by L type connector (47) respectively with vertical connection of described tassel-conveying chain bar (13) on both sides.

4. according to claim 1,2 or 3 described corn pickers, it is characterized in that described defeated straw device comprises commutator (28) and the left and right power transmission shaft (30,30 ') that is connected transmission with three defeated straw chains (29); Described commutator (28) is installed in the middle part on described afterframe (1) right side, power shaft one end of described commutator (28) is fixedlyed connected with the rear output shaft of described right gearbox (25 ') by back link (26), and its other end is by the gears engaged on gear and described right power transmission shaft (30 ') top; Described right power transmission shaft (30 ') vertically is fixed on the bottom on described afterframe (1) right side, and described right power transmission shaft (30 ') is connected transmission by the described defeated straw chain (29) that is placed in its three positions, upper, middle and lower with the described Left Drive axle (30) that is placed in bottom, described afterframe (1) left side respectively; Outwards go up evenly distribution at described defeated straw chain (29) and fix several driving levers (50), described driving lever (50) stretches in the described defeated straw passage (4).

5. corn picker according to claim 4 is characterized in that described cutter comprises high speed transmission (31), left and right cutter shaft (32,32 ') and blade (33); Described high speed transmission (31) is installed in the bottom on described afterframe (1) right side, the fixed gear engaged transmission of its input gear and described right power transmission shaft (30 ') bottom, after the multi-stage gear speed change, with the meshed transmission gear on the described right cutter shaft (32 ') that is installed in described afterframe (1) lower right side, described right cutter shaft (32 ') top is connected transmission with cutter chain (34) with the described left cutter shaft (32) that is installed in bottom, described afterframe (1) left side by sprocket wheel; Described left and right cutter shaft (32,32 ') is over against described inlet (5), its bottom and vertical connection of described blade (33), and described blade (33) stretches on the bottom of described defeated straw passage (4).

6. corn picker according to claim 5, it is characterized in that sprocket wheel and seeding supporting chain bar (35) that described grain lifter comprises that the two ends on the described upper side frame (10) that is installed in described left and right frame (8,8 ') are in transmission connection, the sprocket wheel on the right is fixedlyed connected with the front output shaft of described right gearbox (25 ') with right connecting rod (36 ') by universal joint, and the sprocket wheel on the left side is fixedlyed connected with the output shaft of described left gearbox (25) with left connecting rod (36) by universal joint; The described seeding supporting chain bar (35) on left and right both sides all is positioned at described snapping bar (22) top, becomes on the same plane of 30 °～40 ° of angles with horizontal plane, and install along two described outsides of advancing straw passage (4 ') direction respectively, and two described seeding supporting chain bars (35) by behind the forward direction, mutual reciprocal rotation, the driving lever that is provided with on described seeding supporting chain bar (35) stretches to and describedly advances in the straw passage (4 ').

7. corn picker according to claim 6 is characterized in that being equipped with hydraulic cylinder (48) between described support (27) and motor vehicle front end.

8. corn picker according to claim 7 is characterized in that being provided with the collecting box (49) that is connected with motor vehicle in the rear end lower of described top frame (6).