CN216058334U - Harvester header and grain harvester - Google Patents

Abstract

The utility model provides a harvester header which comprises a cutting knife, a transmission device, an auger, a header shell, a transportation assisting plate and a first fixing plate. The cutting knife comprises a movable knife and a fixed knife; the transmission device is arranged on one side of the header and comprises a swing arm which is connected with one side of the movable knife and used for driving the movable knife to reciprocate; the screw feeder is used for feeding the crops cut by the cutter to the rear part of the machine; the header shell is arranged around the header and used for accommodating the cutting knife, the transmission device and the screw conveyer; the motion assisting plate is arranged above the cutting knife and is fixedly connected with the movable knife, the motion assisting plate comprises a first motion assisting plate, and the first motion assisting plate comprises first sawtooth parts which are arranged at intervals; the first fixing plate is arranged between the movable knife and the motion assisting plate and used for limiting the upward and downward movement of the movable knife. The first auxiliary conveying plate comprises a first avoidance part arranged above the first fixing plate; the first auxiliary board comprises a second avoidance part arranged above the swing arm, and the height of the first sawtooth part corresponding to the second avoidance part is larger than that of the first sawtooth part corresponding to the first avoidance part.

Description

Harvester header and grain harvester

Technical Field

The utility model relates to the field of agricultural machinery, and particularly provides a harvester header.

Background

The crop harvester is an integrated machine for harvesting crops, can complete harvesting and threshing at one time, concentrates grains into a storage bin, and then conveys the grains to a transport vehicle through a conveying belt.

The harvester header is a common working device on a crop harvester and can complete the process of cutting off and conveying crops backwards. The harvester header on the existing market is mostly composed of a cutting knife, an auger, a transportation assisting plate and a transmission device, wherein the transmission device is arranged on one side of the header and connected with the cutting knife to provide power for the reciprocating motion of the cutting knife, and the transportation assisting plate is arranged above the cutting knife and connected with the cutting knife to help the cut crops to be fed into the auger. However, in the process of harvesting, the cutting knife and the transmission device are connected to generate large vibration, so that the transportation assisting plate close to one side of the transmission device is broken, the header cannot normally work, and the harvesting efficiency is seriously affected. Therefore, there is an urgent need to provide a harvester header to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a harvester header, which solves the problem that an auxiliary conveying plate is easy to break under the vibration of a transmission device by improving the strength of the auxiliary conveying plate at one side close to the transmission device, so that the failure rate of the harvester header is reduced, the maintenance cost is reduced, and the working efficiency of machines and tools can be improved.

The utility model provides a harvester header which comprises a cutting knife, a transmission device, an auger, a header shell, a transportation assisting plate and a first fixing plate. The cutting knife comprises a movable knife and a fixed knife, and the crop is cut off by the shearing force generated between the reciprocating motion of the movable knife and the fixed knife; the transmission device is arranged on one side of the header and comprises a swing arm which is connected with one side of the movable knife and used for driving the movable knife to reciprocate.

The auger is used for feeding the crop cut by the cutting knife to the rear part of the machine; the header shell is arranged around the header and used for accommodating the cutting knife, the transmission device and the auger; the conveying assisting plate is arranged above the cutting knife and fixedly connected with the movable knife, the conveying assisting plate gathers cut crops to the center of the header so as to be picked up by an auger, the conveying assisting plate comprises a first conveying assisting plate, and the first conveying assisting plate comprises first saw tooth parts which are arranged at intervals and are obliquely arranged; the first fixing plate is arranged between the movable knife and the motion assisting plate and used for limiting the upward and downward jumping of the movable knife in the reciprocating motion process.

Further, the first transportation assisting plate comprises a first avoiding part which is arranged above the first fixing plate and used for avoiding the first fixing plate; the first conveying assisting plate further comprises a second avoiding portion arranged above the swing arm and used for avoiding the swing arm, and the height of the first sawtooth portion corresponding to the second avoiding portion is larger than that of the first sawtooth portion corresponding to the first avoiding portion.

Further, the second conveying assisting plate comprises a first avoiding part, and the first conveying assisting plate and the second conveying assisting plate are arranged on two sides of the header at intervals;

further, the second transportation assisting plate comprises second saw teeth which are arranged at intervals and are arranged in an inclined mode, and the inclined directions of the first saw teeth and the second saw teeth are opposite and face the center of the header;

further, the first pumping plate comprises a first flat portion disposed between the first saw tooth portions to connect the first saw tooth portions, and the second pumping plate comprises a second flat portion disposed between the second saw tooth portions to connect the second saw tooth portions;

further, the height of the first straight part corresponding to the upper part of the second avoidance part is larger than that of the first straight part corresponding to the upper part of the first avoidance part; the length of the second avoidance part is larger than that of the first avoidance part.

Further, the header shell comprises a first side wall and a second side wall which are arranged on two sides of the header shell, the first side wall is arranged on one side where the transmission device is arranged, and the second side wall is arranged on the other side of the header shell;

preferably, the first motion assisting plate is arranged on one side of the first side wall, the second motion assisting plate is arranged on one side of the second side wall, the first motion assisting plate is 10 mm-100 mm away from the first side wall in the reciprocating motion process of the first motion assisting plate along with the movable knife, and the second motion assisting plate is 10 mm-100 mm away from the second side wall in the reciprocating motion process of the second motion assisting plate along with the movable knife.

Furthermore, the header shell also comprises a third side wall arranged at the bottom of the header shell, and the first fixing plate is arranged between the movable knife and the motion-assisting plate and fixed on the third side wall to limit the upward and downward movement of the movable knife in the reciprocating motion process.

Preferably, the length of the first auxiliary board is greater than that of the second auxiliary board, the length of the first auxiliary board ranges from 1200mm to 1500mm, the length of the second auxiliary board ranges from 400mm to 600mm, and the distance between the first auxiliary board and the second auxiliary board ranges from 200mm to 300 mm.

Furthermore, the first fixing plate comprises a first connecting portion, a pressing and toughening portion and a protruding portion arranged between the first connecting portion and the pressing and toughening portion, the first connecting portion comprises a first mounting hole, the first fixing plate is fixedly connected with the third side wall through the first mounting hole, and the pressing and toughening portion is used for limiting the up-and-down jumping of the movable knife in the reciprocating motion process.

Preferably, the first sawtooth part and the second sawtooth part are triangular or trapezoidal, the distance between the first sawtooth parts ranges from 10mm to 30mm, and the distance between the second sawtooth parts ranges from 10mm to 30 mm.

Furthermore, the harvester header also comprises a second fixing plate, and the second fixing plate is arranged between the motion-assisting plate and the movable knife and used for fixing the motion-assisting plate on the movable knife.

Further, the second fixing plate comprises a second connecting portion and a third connecting portion, a second mounting hole is formed in the second connecting portion, a third mounting hole is formed in the third connecting portion, the second connecting portion is fixedly connected with the movable knife through the second mounting hole, and the third connecting portion is fixedly connected with the transportation assisting plate through the third mounting hole

Further, the utility model also provides a grain harvester comprising the harvester header.

The header of the harvester provided by the utility model can bring at least one of the following beneficial effects:

through improving the intensity of fortune helping board being close to transmission one side in this scheme to solve the easy cracked problem of fortune helping board under transmission's vibration, and then reduce the fault rate of harvester header, further reduce cost of maintenance, can improve machines work efficiency simultaneously.

Drawings

The utility model is described in further detail below with reference to the following figures and detailed description:

FIG. 1 is a schematic structural view of a header of the harvester of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic view of the structure of the position limiting device of the present invention;

FIG. 4 is a schematic view of another perspective structure of the spacing device of the present invention;

FIG. 5 is a partial enlarged view of FIG. 1 at B;

FIG. 6 is a front view of a harvester header of the present invention;

FIG. 7 is an enlarged view of a portion of FIG. 6 at D;

FIG. 8 is an enlarged view of a portion of FIG. 6 at C;

FIG. 9 is an enlarged view of a portion of FIG. 6 at E;

FIG. 10 is a schematic illustration of a structure of the booster of the present invention;

FIG. 11 is a schematic diagram of a first fixing plate structure according to the present invention;

FIG. 12 is a schematic diagram of a second fixing plate structure according to the present invention;

fig. 13 is a schematic structural view of the screw of the present invention.

The reference numbers illustrate:

100-a cutting table; 1-a cutter; 11-moving the knife; 12-stationary knife; 2-a transmission device; 21-swing arm; 211-eighth mounting hole; 212-mounting shaft; 213-a first bearing; 22-a drive shaft; 23-a rocker arm; 231-sixth mounting holes; 232-seventh mounting hole; 24-a second bearing; 25-eccentric oscillating ring; 26-a clevis; 3-screw conveyer; 31-auger carrier roller and 32-left helical blade; 33-right helical blade; 34-a feed bar; 4-header shell; 41-a first side wall; 42-a second side wall; 43-a third side wall; 5-a transportation assisting plate; 51-a first aid board; 511-a first serration; 512-a first straight portion; 513 — a first avoidance portion; 52-a second aid panel; 521-a second serration; 522-a second straight portion; 523-a second avoidance portion; 6-a first fixing plate; 61-a first connection; 611 — a first mounting hole; 62-a toughening part; 63-a boss; 7-a second fixing plate; 71-a second connection; 711-second mounting hole; 72-a third connection; 721-a third mounting hole; 8-a limiting device; 81-a first mounting plate; 811-a fourth connecting portion; 8111-a fourth mounting hole; 812-a fifth connection; 8121-fifth mounting hole; 82-a second mounting plate; 821-sixth connecting part; 8211-waist hole; 822-a seventh connecting portion; 83-abrasion resistant strips.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the utility model, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.

Embodiments of the present invention are described in further detail below with reference to the accompanying drawings of the specification.

The fore-aft relationship described herein is with reference to the direction of movement of the harvester, which includes a track assembly, a threshing assembly, a gap bridge, a control bin, a chassis, a grain bin, a threshing housing, a grain discharge bin, and a harvesting assembly. The crawler belt assembly is arranged at the bottom of the chassis and used for driving the harvester to move. Reap the subassembly including setting up in header 100 in chassis the place ahead and being fixed in the reel of header upper end, the gap bridge sets up and is used for carrying cereal to the subassembly of threshing in header 100 rear, the subassembly of threshing sets up and sends grain to the grain tank after threshing in threshing shell is inside to be used for threshing. The control bin is arranged in front of the grain tank and used for controlling the operation of the harvester. Because the structures of the track assembly, the threshing assembly, the gap bridge, the chassis, the grain tank, the threshing shell, the grain unloading cylinder and the control bin are mature technologies in the field, the detailed description of the pictures and the characters is not provided herein, and only the header 100 related to the utility model is described in detail.

Referring to fig. 1, the header 100 includes a header housing 4, a cutter 1, an auger 3, a transmission device 2, a limiting device 8, and a transportation assistance plate 5. The cutting knife 1 comprises a movable knife 11 and a fixed knife 12, and crops are cut off through shearing force generated between reciprocating motion of the movable knife 11 and the fixed knife 12. The transmission device 2 is arranged on one side of the cutting table 100 to provide power for the reciprocating motion of the movable knife 11. The limiting device is arranged above the power output end of the transmission device 2 and used for limiting the power output direction of the transmission device 2. The motion-assisting plate 5 is arranged above the cutting knife 1 and fixedly connected with the movable knife 11, and the cut crops are gathered towards the center of the header 100 by the motion-assisting plate 5 so as to be picked up by the auger 3. The auger 3 is arranged behind the cutting knife 1 and is used for feeding the crops cut by the cutting knife 1 to the rear of the machine. Header 100 is arranged in around in header casing 4 and is used for holding cutting knife 1, transmission 2, screw feeder 3 and stop device 8 and helping fortune board 5.

Referring to fig. 2 to 4, the limiting device 8 includes a first mounting plate 81, a second mounting plate 82 disposed on the first mounting plate 81, and a wear strip 83 fixedly connected to the bottom of the second mounting plate 82, and the second mounting plate is adjustable in the height direction of the first mounting plate. The transmission device 2 comprises a swing arm 21 connected with the movable knife 11, and a first bearing 213 is rotatably arranged on one side of the swing arm 21; the bottom of the wear-resistant strip 83 is arranged at an interval with the outer ring of the first bearing 213, and the interval distance is 0.3-0.8 mm; the length of the wear-resistant strip is 10-100 mm. Through wear-resisting strip 83 and first bearing 213, effectively increase wear resistance and spacing fluency, further ensure that swing arm 21 can prolong the assigned direction steady motion, in addition, consider to harvester operational environment, cutting knife 1 needs the motion space of moderate degree, through the interval that rationally sets up wear-resisting strip 83 and first bearing 213, effectively ensure the steady reciprocating motion of cutting knife 1.

The first mounting plate 81 comprises a fourth connecting part 811 and a fifth connecting part 812 arranged at an angle with the fourth connecting part 811, a fourth mounting hole 8111 is formed in the fourth connecting part 811, and the first mounting plate 81 is fixedly connected with the header housing 4 through the fourth mounting hole; the fifth connecting part 812 is provided with at least two fifth mounting holes 8121 for connecting with the second mounting plate 82; the second mounting plate 82 comprises a sixth connecting portion 821 connected with the fifth connecting portion 812 and a seventh connecting portion 822 used for limiting the swing arm 21, wherein a waist hole 8211 matched with the position and the size of the fifth mounting hole 8121 is formed in the sixth connecting portion 821, and the second mounting plate 82 is enabled to be adjustable in the first mounting plate 81. The wear-resistant strip 83 is welded with the bottom of the seventh connecting part 822.

Referring to fig. 5, the transmission device 2 further includes a transmission shaft 22 for transmitting power and a rocker arm 23 disposed at one end of the transmission shaft; the rocker arm 23 comprises a sixth mounting hole 231 and a seventh mounting hole 232 which are arranged at two ends; the transmission shaft 22 is in transmission connection with the rocker arm 23 through a sixth mounting hole 231; the rocker arm 23 is rotatably connected with the swing arm 21 through a seventh mounting hole 232; the other end of the swing arm 21 is provided with an eighth mounting hole 211; the swing arm 21 is connected with the movable blade 11 through an eighth mounting hole 211; the transmission shaft 22 drives the swing arm 23 to rotate, and further drives the swing arm 21 and the movable blade 11 connected with the swing arm 21 to reciprocate.

A mounting shaft 212 is arranged in the eighth mounting hole 211; the first bearing 213 is engaged with the mounting shaft 212. The transmission 2 further comprises a second bearing 24 cooperating with the transmission shaft 22; the second bearing 24 is mounted on the header housing 4.

The transmission device 2 further comprises an eccentric swinging ring 25 and a connecting fork 26 rotatably arranged on the outer ring of the eccentric swinging ring 25; the other end of the transmission shaft 22 is fixedly connected with a connecting fork 26; the connecting fork 26 is arranged along the radial direction of the eccentric swinging ring 25 in a rotating way; the eccentric swinging ring 25 makes eccentric motion to drive the connecting fork 26 to rotate, and further drive the transmission shaft 22 to rotate.

Referring to fig. 10, the header housing 4 includes a first sidewall 41 and a second sidewall 42 disposed on both sides thereof, the first sidewall 41 being disposed on one side of the transmission 2, and the second sidewall 42 being disposed on the other side of the header housing 4. The transportation assisting plate 5 comprises a first transportation assisting plate 51 and a second transportation assisting plate 52, the first transportation assisting plate 51 and the second transportation assisting plate 52 are arranged on two sides of the header 100 at intervals, the first transportation assisting plate 51 is arranged on one side of the first side wall 41, the second transportation assisting plate 52 is arranged on one side of the second side wall 42, the range a of the first transportation assisting plate 51 from the first side wall 41 is 10 mm-100 mm in the reciprocating motion process of the movable knife 11, and the range b of the second transportation assisting plate 52 from the second side wall 42 is 10 mm-100 mm in the reciprocating motion process of the movable knife 11.

The length of the first auxiliary board 51 is greater than that of the second auxiliary board 52, the length range value c of the first auxiliary board 51 is 1200 mm-1500 mm, the length range value d of the second auxiliary board 52 is 400 mm-600 mm, and the distance range value e between the first auxiliary board 51 and the second auxiliary board 52 is 200 mm-300 mm.

The first transportation assisting plate 51 comprises first saw teeth 511 which are arranged at intervals and are arranged obliquely, the second transportation assisting plate 52 comprises second saw teeth 521 which are arranged at intervals and are arranged obliquely, the first saw teeth 511 and the second saw teeth 521 are opposite in oblique directions and face the center of the harvester header 100, the first transportation assisting plate 51 comprises first flat parts 512 which are arranged between the first saw teeth 511 and used for connecting the first saw teeth 511, and the second transportation assisting plate 52 comprises second flat parts 522 which are arranged between the second saw teeth 521 and used for connecting the second saw teeth 521.

The first serration portion 511 and the second serration portion 521 are triangular or trapezoidal, the first serration portion 511 and the second serration portion 521 have the same size and shape, the first flat portion 512 and the second flat portion 522 have the same size and shape, and the length range value f of the first flat portion 512 and the second flat portion 522 is 10mm to 30 mm.

The header shell 4 further comprises a third side wall 43 arranged at the bottom of the header shell, the harvester header 100 further comprises a first fixing plate 6, and the first fixing plate 6 is arranged between the movable knife 11 and the transportation assisting plate 5 and fixed on the third side wall 43 to limit the upward jumping of the movable knife 11 in the reciprocating process.

Referring to fig. 11, the first fixing plate 6 includes a first connecting portion 61, a pressing and toughening portion 62, and a protruding portion 63 disposed between the first connecting portion 61 and the pressing and toughening portion 62, the first connecting portion 61 includes a first mounting hole 611, the first fixing plate 6 is fixedly connected to the third side wall 43 through the first mounting hole 611, and the pressing and toughening portion 62 is configured to limit upward movement of the movable blade 11 during the reciprocating motion.

The harvester header 100 further comprises a second fixing plate 7, and the second fixing plate 7 is arranged between the motion assisting plate 5 and the movable knife 11 and used for fixing the motion assisting plate 5 on the movable knife 11.

Referring to fig. 12, the second fixing plate 7 includes a second connecting portion 71 and a third connecting portion 72, the second connecting portion 71 is provided with a second mounting hole 711, the third connecting portion 72 is provided with a third mounting hole 721, the second connecting portion 71 is fixedly connected to the movable blade 11 through the second mounting hole 711, and the third connecting portion 72 is fixedly connected to the motion assisting plate 5 through the third mounting hole 721.

The first and second assistance plates 51 and 52 shown in fig. 6 to 9 include a first escape part 513 disposed above the first fixing plate 6 to escape the first fixing plate 6.

The first auxiliary board 51 further comprises a second avoidance portion 523 which is arranged above the swing arm 21 and is used for avoiding the swing arm 21, and the length of the second avoidance portion 523 is greater than that of the first avoidance portion 513; the height of the first serration 511 above the second escape part 523 is greater than the height of the first serration 511 above the first escape part 513; the height of the first straight portion 512 above the second escape portion 523 is greater than the height of the first straight portion 512 above the first escape portion 513.

Referring to fig. 13, the auger 3 includes an auger roller 31, a left helical blade 32 disposed on the auger roller, a right helical blade 33 disposed on the auger roller, and a retractable feeding rod 34 disposed between the left helical blade 32 and the right helical blade 33; the left helical blade 32 and the right helical blade 33 cooperate with each other to gather the crop to the area of the feed stalk 34.

When the grain harvester works, the eccentric swing ring 25 rotates to drive the connecting fork 26 to rotate, so as to drive the driven transmission shaft 22 to rotate, the transmission shaft 22 drives the swing arm 21 to do horizontal reciprocating motion through the rocker arm 23, so that the swing arm 21 drives the movable knife 11 to do reciprocating motion, the movable knife 11 and the fixed knife 12 generate shearing force to cut off crops, meanwhile, the driven transmission shaft is fixedly connected with the movable knife 11, the first transportation assisting plate 51 and the second transportation assisting plate 52 gather the cut-off crops and convey the gathered crops to the auger 3, the left helical blade 32 and the right helical blade 33 rotate along with the auger carrier roller 31 to gather the crops to the feeding rod 34, the feeding rod 34 feeds the crops to the gap bridge, the crops are conveyed to the threshing component through the gap bridge to be threshed, and the threshed crops are conveyed to a grain tank to realize crop harvesting.

It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present invention without departing from the spirit and scope of the utility model. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

Claims (10)

1. A harvester header, its characterized in that, it includes:

the cutting knife comprises a movable knife and a fixed knife, and the crop is cut off by the shearing force generated between the reciprocating motion of the movable knife and the fixed knife;

the transmission device is arranged on one side of the header and comprises a swing arm connected with one side of the movable cutter and used for driving the movable cutter to reciprocate;

the screw conveyor is used for feeding the crops cut off by the cutting knife to the rear part of the machine;

the header shell is arranged around the header and used for accommodating the cutting knife, the transmission device and the auger;

the conveying assisting plate is arranged above the cutting knife and fixedly connected with the movable knife, the conveying assisting plate gathers cut crops to the center of the header so as to be picked up by an auger, the conveying assisting plate comprises a first conveying assisting plate, and the first conveying assisting plate comprises first saw tooth parts which are arranged at intervals and are obliquely arranged;

the first fixing plate is arranged between the movable knife and the motion assisting plate and used for limiting the upward and downward jumping of the movable knife in the reciprocating motion process;

the first auxiliary conveying plate comprises a first avoiding part which is arranged above the first fixing plate and used for avoiding the first fixing plate; the first conveying assisting plate further comprises a second avoiding portion arranged above the swing arm and used for avoiding the swing arm, and the height of the first sawtooth portion corresponding to the second avoiding portion is larger than that of the first sawtooth portion corresponding to the first avoiding portion.

2. A harvester header as in claim 1, wherein:

the conveying assisting plates comprise second conveying assisting plates, the second conveying assisting plates comprise first avoidance parts, and the first conveying assisting plates and the second conveying assisting plates are arranged on two sides of the header at intervals;

the second auxiliary conveying plate comprises second saw tooth parts which are arranged at intervals and are obliquely arranged, and the first saw tooth parts and the second saw tooth parts are opposite in oblique direction and face the center of the header;

the first pumping plate comprises a first flat part which is arranged between the first saw-tooth parts and is used for connecting the first saw-tooth parts, and the second pumping plate comprises a second flat part which is arranged between the second saw-tooth parts and is used for connecting the second saw-tooth parts;

the height of the first straight part corresponding to the upper part of the second avoidance part is greater than that of the first straight part corresponding to the upper part of the first avoidance part; the length of the second avoidance part is larger than that of the first avoidance part.

3. A harvester header as in claim 2, wherein:

the header shell comprises a first side wall and a second side wall which are arranged on two sides of the header shell, the first side wall is arranged on one side where the transmission device is arranged, and the second side wall is arranged on the other side of the header shell;

the first motion assisting plate is arranged on one side of the first side wall, the second motion assisting plate is arranged on one side of the second side wall, the first motion assisting plate is 10 mm-100 mm away from the first side wall in the reciprocating motion process of the moving knife, and the second motion assisting plate is 10 mm-100 mm away from the second side wall in the reciprocating motion process of the moving knife.

4. A harvester header as in claim 1, wherein:

the header shell further comprises a third side wall arranged at the bottom of the header shell, and the first fixing plate is arranged between the movable knife and the motion assisting plate and fixed on the third side wall to limit the upward and downward jumping of the movable knife in the reciprocating motion process.

5. A harvester header as in claim 2, wherein:

the length of the first auxiliary board is larger than that of the second auxiliary board, the length range value of the first auxiliary board is 1200-1500 mm, the length range value of the second auxiliary board is 400-600 mm, and the distance range value between the first auxiliary board and the second auxiliary board is 200-300 mm.

6. A harvester header as claimed in claim 4, wherein:

the first fixing plate comprises a first connecting portion, a pressing and toughening portion and a protruding portion arranged between the first connecting portion and the pressing and toughening portion, the first connecting portion comprises a first mounting hole, the first fixing plate is fixedly connected with the third side wall through the first mounting hole, and the pressing and toughening portion is used for limiting the up-and-down movement of the movable knife in the reciprocating motion process.

7. A harvester header as in claim 2, wherein:

the first sawtooth parts and the second sawtooth parts are triangular or trapezoidal, the distance range value of the intervals between the first sawtooth parts is 10 mm-30 mm, and the distance range value of the intervals between the second sawtooth parts is 10 mm-30 mm.

8. A harvester header as claimed in claim 4, wherein:

the harvester header also comprises a second fixing plate, and the second fixing plate is arranged between the motion-assisting plate and the movable cutter and used for fixing the motion-assisting plate on the movable cutter.

9. A harvester header as in claim 8, wherein:

the second fixing plate comprises a second connecting portion and a third connecting portion, a second mounting hole is formed in the second connecting portion, a third mounting hole is formed in the third connecting portion, the second connecting portion is fixedly connected with the third side wall through the second mounting hole, and the third connecting portion is fixedly connected with the transportation assisting plate through the third mounting hole.

10. A grain harvester, characterized by: comprising a harvester header as claimed in any one of claims 1 to 9.

Images