CN106818034B

CN106818034B - Harvester

Info

Publication number: CN106818034B
Application number: CN201710184607.3A
Authority: CN
Inventors: 周建成; 贾文斌; 冯春明
Original assignee: Inner Mongolia Hongchang Machinery Manufacturing Co ltd
Current assignee: Inner Mongolia Hongchang Machinery Manufacturing Co ltd
Priority date: 2017-03-24
Filing date: 2017-03-24
Publication date: 2023-07-25
Anticipated expiration: 2037-03-24
Also published as: CN106818034A

Abstract

The invention relates to the technical field of agricultural machinery, in particular to a harvester. The harvester comprises a header and a threshing mechanism; the header comprises a supporting platform, a reel chain group, a stalk pulling roller group and a cutter; the straw pulling chain group is provided with a straw pulling chain inlet and a straw pulling chain outlet, so that the stalks are transmitted from the straw pulling chain inlet to the straw pulling chain outlet, and one side of the straw pulling chain group, which is close to the straw pulling chain outlet, is provided with a cutter; a gap is formed between the supporting platform and the cutter; the threshing mechanism comprises a threshing cylinder and a concave plate arranged at the bottom end of the threshing cylinder; the threshing cylinder comprises a cylinder body; the peripheral surface of the roller body is connected with a threshing element, and the length direction of the threshing element is parallel to the length direction of the roller body; the threshing elements are uniformly arranged along the circumferential direction of the roller body; the threshing element is smoothly transited. The invention provides a harvester, which aims to solve the technical problem that the impurity content of sunflower seeds harvested by the existing sunflower harvester is high.

Description

Harvester

Technical Field

The invention relates to the technical field of agricultural machinery, in particular to a harvester.

Background

The industries of all industries are gradually changed along with the progress of science and technology, and agricultural production is gradually developed to agricultural mechanization, wherein the harvesting of sunflower is also gradually replaced by manual harvesting by a harvester.

After the header of the existing sunflower harvester cuts the flower disc of the sunflower from the stalks, a section of stalk still remains on the flower disc, and the flower disc with the stalk enters a threshing mechanism to thresh the flower disc after passing through a bridge on the harvester. After passing through the threshing mechanism, not only the sunflower seeds are entrained with broken impurities of the flower disc, but also a large amount of impurities formed after the stems are broken, so that the impurity content of the seeds is increased.

In addition, the threshing mechanism in the sunflower harvester comprises a threshing cylinder rotating at high speed and a standing concave plate, a gap between the threshing cylinder and the concave plate is a threshing gap, and threshing elements for beating, rubbing, rolling and the like of a sunflower disk are arranged on the threshing cylinder. Referring to fig. 1, fig. 1 is a threshing cylinder, namely a spike-tooth threshing cylinder, which is a common threshing cylinder in a sunflower harvester in the prior art, wherein threshing elements of the spike-tooth threshing cylinder are spike teeth, the spike teeth are in a rod tooth shape, are thin and long, and are sharp in tooth heads and are used for brushing and grabbing a flower disc, and the threshing capability of the flower disc is improved, but the flower disc is crushed into powder or slag when passing through a threshing gap, so that a large amount of impurities formed by crushing the flower disc are mixed in sunflower seeds, and the impurity content of the seeds is further increased.

In summary, the existing sunflower harvester has high impurity content of the sunflower seeds after harvesting, reduces the yield of the sunflower seeds, and increases the load of the follow-up threshing mechanism and/or the cleaning mechanism.

Accordingly, the present application addresses the above-described problems by providing a new harvester.

Disclosure of Invention

The invention aims to provide a harvester which aims to solve the technical problem that the impurity content of sunflower seeds harvested by the existing sunflower harvester is high.

The invention provides a harvester, which comprises a header arranged at the front end of the harvester and a threshing mechanism communicated with the header;

the cutting table sequentially comprises a supporting platform for supporting a flower disc, a reel chain group, a stalk pulling roller group and a cutter for cutting off stalks from the top end to the bottom end of the cutting table; the seedling pulling chain group is provided with a seedling pulling chain inlet and a seedling pulling chain outlet, the stalks are conveyed from the seedling pulling chain inlet to the seedling pulling chain outlet, and one side, close to the seedling pulling chain outlet, of the seedling pulling chain group is provided with the cutter; the stalk pulling roller group is used for pulling stalks away from the supporting platform; a gap is formed between the supporting platform and the cutter;

the threshing mechanism comprises a threshing cylinder and a concave plate arranged at the bottom end of the threshing cylinder; the threshing cylinder comprises a cylinder body which can rotate along with a cylinder shaft; threshing elements are fixedly connected to the peripheral surface of the roller body, and the length direction of the threshing elements is parallel to the length direction of the roller body; the threshing elements are uniformly arranged along the circumferential direction of the roller body; the threshing element is smoothly transited everywhere.

Further, the threshing element is a cylinder;

alternatively, the threshing element is toothed; the tooth tips of the tooth-shaped threshing elements form an obtuse angle.

Further, the header is provided with the crop dividers along two sides perpendicular to the advancing direction of the header;

the crop divider comprises a crop lifting plate; the seedling raising plate is provided with a seedling dividing baffle on one side far away from the header, and the height of the seedling dividing baffle is higher than that of the supporting platform.

Further, the harvester of the invention also comprises a seed receiving tray;

a cavity for accommodating seeds is arranged in the seed receiving disc;

the seed receiving disc is arranged at the front end of the header and is positioned at two sides of the reel chain inlet.

Further, the harvester disclosed by the invention further comprises a gap bridge conveying auger and a grain conveying auger;

the length direction of the gap bridge conveying auger is perpendicular to the advancing direction of the header, and is arranged at the rear end of the header and used for receiving the flower disc output from the reel chain outlet;

the gap bridge conveying auger is provided with a spiral bulge for conveying the flower discs positioned on two sides of the gap bridge conveying auger along the length direction to the center of the gap bridge conveying auger along the length direction;

the seed conveying auger is connected between the gap bridge conveying auger and the seed receiving disc and is used for conveying the seeds falling into the seed receiving disc to the gap bridge conveying auger.

Further, the threshing mechanism is a multi-stage threshing mechanism;

the multi-stage threshing mechanism comprises a first-stage threshing mechanism, a second-stage threshing mechanism and a third-stage threshing mechanism, wherein the heads and the tails of the multi-stage threshing mechanisms are sequentially communicated and are arranged in a step-like manner;

the threshing element of the threshing cylinder of the first-stage threshing mechanism is a cylinder;

the threshing elements of the threshing cylinder of the second-stage threshing mechanism are cylinders, the radius of the cylinder body of the second-stage threshing mechanism is smaller than that of the cylinder body of the first-stage threshing mechanism, and the number of the threshing elements of the second-stage threshing mechanism is smaller than that of the threshing elements of the first-stage threshing mechanism;

threshing elements of a threshing cylinder of the third-stage threshing mechanism are tooth-shaped, and tooth tips of the tooth-shaped threshing elements form obtuse angles; the third-stage threshing mechanism is provided with a plurality of third-stage threshing mechanisms.

Further, the harvester disclosed by the invention further comprises a flower disc bin for collecting flower discs;

an output port of the third-stage threshing mechanism is connected with an elevator;

a hook plate for grabbing the flower disc is arranged on the elevator;

the end of the elevator is communicated with the flower disc bin.

Further, the harvester disclosed by the invention further comprises a seed auger;

the input port of the seed output auger is used for collecting the seeds output from the threshing mechanism, and the output port is communicated with a seed conveying pipe;

one end of the grain conveying pipe along the extending direction is provided with a fan for conveying air pressure into the grain conveying pipe, and the other end of the grain conveying pipe is communicated with a grain bin.

Further, the harvester disclosed by the invention further comprises a grain conveying auger, wherein the input end of the grain conveying auger is communicated with the grain bin;

the grain conveying auger is hinged with the grain bin.

Further, the harvester of the invention further comprises a lifting oil cylinder for lifting the header.

To sum up, during operation, draw stem roller group to keeping away from supporting platform's direction pulling for supporting platform closely supports the flower disc, and under supporting platform and draw stem roller group's effect, the stem is stretched, and then the cutter cuts off the stem after stretching, has realized having the support cutting to the stem, accomplishes the separation of flower disc and stem. The gap is formed between the supporting platform and the cutter, so that the supporting platform and the cutter are close to each other but are not in contact with each other, the cutter can cut off the stalks from a position close to the flower disc, the length of the stalks left on the cut flower disc is small, and even the stalks are not left on the flower disc. After passing through the threshing mechanism, the sunflower seeds only have impurities crushed by the flower disc, and no impurities formed after the stems are crushed, so that the impurity content of the seeds is reduced. In addition, the threshing element is smoothly transited everywhere, and threshing is carried out by the threshing element in a mode of rubbing the flower disc instead of the traditional mode of beating, rubbing and rolling the flower disc. When the threshing cylinder rotates at a high speed, the threshing element does not break the flower disc, but the flower disc remains intact, and a large amount of flower disc broken slag impurities are not doped in sunflower seeds, so that the impurity content of the sunflower seeds harvested by the harvester is further reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a front view of a schematic structural diagram of a harvester according to a first view angle provided by an embodiment of the invention;

fig. 2 is a front view of a schematic structural diagram of a harvester according to a second view of the invention;

fig. 3 is a front view of a schematic structural diagram of a harvester according to a third view of the invention;

fig. 4 is a perspective view of a header according to an embodiment of the present invention;

FIG. 5 is an enlarged view of part A of the header of FIG. 4;

fig. 6 is a top view of a header provided by an embodiment of the present invention (showing a state in which a bridge conveying auger is not shown and a supporting platform is not shown);

FIG. 7 is a top view of a header provided in an embodiment of the present invention (the status of the support platform, reel set, and cutter are not shown);

fig. 8 is a top view of a header provided by an embodiment of the present invention (the status of the support platform, stalk rolls set, and reel chain are not shown);

fig. 9 is a side view of a first construction of a threshing cylinder provided by an embodiment of the invention;

fig. 10 is a side view of a second construction of a threshing cylinder provided by an embodiment of the invention;

fig. 11 is a cross-sectional view (cross-sectional line is not shown) of a second construction of a threshing cylinder provided by an embodiment of the invention;

fig. 12 is a schematic structural diagram of a threshing mechanism according to an embodiment of the invention.

Icon: 11-a first platform; 12-a second platform; 13-hairbrush; 2-a reel chain; 21-reel teeth; 3-a stalk roll; 31-stem tendon pulling; 4-a disc cutter; 51-lifting grass plates; 52-a seedling dividing baffle; 53-seed tray; 61-a bridge conveying auger; 62-a kernel conveying auger; 63-an output port of the grain auger; 64-a grain conveying auger; 71-a roller body; 711-threshing element; 72-concave plate; 81-a flower disc bin; 82-a kernel bin; 91-a first stage threshing mechanism; 92-a second stage threshing mechanism; 93-a third stage threshing mechanism; 94-an elevator; 941-hook plate; 101-a kernel conveying pipe; 1011-kernel inlet; 102-a fan; 103-lifting oil cylinder.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Example 1

Referring to fig. 1-12, the present embodiment provides a harvester, including a header provided at a front end of the harvester and a threshing mechanism communicated with the header;

the threshing mechanism comprises a threshing cylinder and a concave plate 72 arranged at the bottom end of the threshing cylinder; the threshing cylinder comprises a cylinder body 71 which can rotate along with a cylinder shaft; a threshing element 711 is fixedly connected to the peripheral surface of the roller body 71, and the length direction of the threshing element 711 is parallel to the length direction of the roller body 71; the threshing elements 711 are plural, and the plural threshing elements 711 are uniformly arranged along the circumferential direction of the roller body 71; the threshing element 711 is smoothly transitioned.

It should be noted that the cutter may be a reciprocating cutter or a disk cutter. In addition, the header comprises a front end and a tail end, when the sunflower is harvested, the sunflower stalks are contacted with the front end of the header, under the transmission action of the seedling pulling chain group, the stalks move towards the direction close to the tail end of the header, one side of the seedling pulling chain group close to the front end of the header is the seedling pulling chain inlet, and one side of the seedling pulling chain group close to the tail end of the header is the seedling pulling chain outlet. A gap is formed between the supporting platform and the cutter, namely: the gap allows for access but no contact between the support platform and the cutter.

When the sunflower stalk harvester works, the sunflower stalk moves from the inlet of the seedling pulling chain to the outlet of the seedling pulling chain under the action of the seedling pulling chain group, and the sunflower disc is positioned above the supporting platform. The sunflower stalks are pulled in the direction away from the supporting platform by the stalk pulling roller set in the moving process, so that the supporting platform tightly supports the flower disc, the stalks are stretched under the action of the supporting platform and the stalk pulling roller set, and then the stretched stalks are cut off by the cutter, so that the support cutting of the stalks is realized, and the flower disc and the stalks are separated. The support platform is close to but not contacted with the cutter, when the flower disc is tightly supported by the support platform and under the action of the support platform and the stem pulling roller set, the cutter can cut off the stems from the positions close to the flower disc, so that the lengths of the stems left on the cut flower disc are very small, even the stems left on the flower disc are not left, the flower disc without the stems is output from the seedling pulling chain outlet, and then enters the threshing mechanism to thresh the flower disc, so that the impurity amount carried in sunflower seeds is reduced, only the impurity after the flower disc is crushed, the impurity formed after the stem is not crushed, the workload of separating and cleaning the seeds with the impurity is greatly reduced, the energy is saved, and the working efficiency of sunflower harvesting is improved. Solves the technical problem that a large amount of impurities are formed after the sunflower seeds which pass through the threshing mechanism are crushed in the prior art.

Threshing elements 711 are fixedly connected to the circumferential surface of the roller body 71, for example, the threshing elements 711 are nested on the roller body 71 or welded on the roller body 71, and of course, the threshing elements 711 can also be detachably connected with the roller body 71, for example, in a screwed connection manner.

The threshing element 711 is smoothly transited everywhere, for example, as shown in fig. 9, the threshing element 711 is a cylinder; alternatively, referring to fig. 10 and 11, the threshing element 711 is toothed; the tooth tips of the tooth-shaped threshing element 711 form an obtuse angle. Thus, threshing element 711 effects threshing by rubbing against the faceplate, rather than conventional striking, rubbing, rolling against the faceplate. When the threshing cylinder rotates at a high speed, the threshing element 711 does not break the flower disc, but the flower disc remains intact, so that the doping rate of sunflower seeds is low, and sunflower seeds and a little flower disc impurities fall into the step shaking plate from the gap of the concave plate 72 and then fall into the grain cleaning sieve. On the one hand, the complete flower disc can be collected and reused, for example as feed, without being wasted. On the other hand, as the flower disc is complete and is not broken, the flower disc can not enter the sorting mechanism along with the seeds, thereby reducing the workload of the sorting mechanism and saving energy. In summary, the threshing cylinder provided by the embodiment solves the technical problems that in the prior art, the flower disc is crushed after passing through the threshing cylinder, so that the flower disc is wasted, and the working pressure of the sorting mechanism for cleaning grains is increased.

In summary, on the one hand, there is no residual stalk on the disc chuck, or the length of the residual stalk is small, and the disc chuck enters the threshing mechanism to thresh the disc chuck. After passing through the threshing mechanism, the sunflower seeds only have impurities crushed by the flower disc, and no impurities formed after the stems are crushed, so that the impurity content of the seeds is reduced. In addition, the flower disc after the threshing mechanism basically keeps complete, a large amount of flower disc slag impurities are not doped in the sunflower seeds, and the impurity content of the seeds is further reduced.

Referring to fig. 1, the harvester according to the present embodiment further includes a cab.

Referring to fig. 4 and 5, the set of reel chains comprises two reel chains 2;

the gap between the two reel chains 2 is used for accommodating the stalks;

in the two adjacent straw poking chains 2, one side of each straw poking chain 2, which is close to the other straw poking chain 2, is provided with straw poking teeth 21 for poking the stalks;

the rotation directions of two adjacent straw pulling chains 2 are opposite, and the stems between the two straw pulling chains 2 move from the inlet of the straw pulling chains to the outlet of the straw pulling chains;

the reel chain group is provided with a plurality of reel chain groups.

Specifically, each of the reel chains is in driving connection with the first sprocket and the second sprocket, and each of the reel chain groups comprises a first reel chain and a second reel chain. In operation, the stalks enter the gap between the first and second chains from the chain inlet and are transported with the chain in the direction of the chain outlet by the teeth 21. The plurality of the poking chain groups are used for simultaneously conveying a plurality of rows of sunflower stems.

Referring to fig. 7, the stalk rolls group includes two stalk rolls 3;

the gap between the two stalk rolls 3 corresponds to the gap between the two stalk-pulling chains;

a stem pulling rib 31 for pulling the stems is arranged on each stem pulling roller 3;

the two stalk rolls 3 are turned oppositely, and the stalks between the two stalk rolls 3 are moved away from the supporting platform;

the stalk pulling roller group is provided with a plurality of stalk pulling roller groups.

The gap between the two stalk rolls 3 is used for accommodating stalks.

Preferably, the length direction of the stalk pulling rib 31 is parallel to the length direction of the stalk pulling roller 3, so that the stalk can be driven to rotate along with the stalk pulling roller 3, and the friction between the stalk pulling roller 3 and the stalk is increased.

Specifically, the stalk rolls 3 are driven by a motor, and the stalk rolls 3 comprise a stalk roll front section and a stalk roll rear section which are connected, wherein the front section is in a sharp angle shape, the rear section is in a cylinder shape, and the front section is used for shunting stalks and then enters a smaller gap between the two stalk roll rear sections from a larger gap formed between the two stalk roll front sections.

Preferably, the stalk-pulling ribs 31 are disposed on the rear section of the stalk-pulling roller, and the stalk-pulling ribs 31 are plural, the plural stalk-pulling ribs 31 are uniformly disposed along the circumference of the rear section of the stalk-pulling roller, and the stalk-pulling ribs 31 cooperate with a smaller gap between the rear sections of the two stalk-pulling rollers for pulling the stalk in a direction away from the supporting platform.

Alternatively, referring to fig. 5, the cutter is a disk cutter;

the disc cutter comprises a disc cutter 4; the circumference of one side of the disc cutter 4 along the thickness direction comprises a cutting edge;

the number of the disc cutters 4 is two, the cutting edges of the two disc cutters 4 are opposite, and the two disc cutters 4 are arranged in a staggered mode.

It should be noted that the cutter may also be a reciprocating cutter.

Specifically, referring to the figure, the cutting edges of the two circular cutters 4 are opposite, so that the two circular cutters 4 cut the stalks at equal heights, and thus the stalks can be cut by a wire, so that the stalks can be cut off quickly, and the cutting reliability is improved. The two disc cutters 4 are arranged in a staggered mode, and the reliability of cutting off the stalks is further enhanced.

Referring to fig. 5, the support platform comprises a first platform 11 and a second platform 12 with equal heights on a platform plane;

the gap between the first platform 11 and the second platform 12 corresponds to the gap between the two reel chains;

one surface of the supporting platform, which is far away from the reel chain, is a plane;

the support platform has a plurality of.

The gap between the first and second platforms 11, 12 is for the stalk to pass through, and the flower disc is located on the side of the first and second platforms 11, 12 remote from the reel chain for supporting the flower disc. The surface of the supporting platform, which is far away from the reel chain, is a plane and is used for horizontally placing the flower disc on the supporting platform so as to prepare for the next cutting and positioning.

Preferably, the sides of the first and second platforms 11 and 12 remote from the reel chains are provided with brushes 13 for shielding the gap between the first and second platforms 11 and 12.

Further preferably, the sides of the first platform 11 and the second platform 12 remote from the reel chain are each provided with a brush 13 for shielding the gap between the first platform 11 and the second platform 12.

Preferably, as shown in fig. 4, the header is provided with crop dividers along two sides perpendicular to the advancing direction of the header;

the crop divider comprises a crop lifting plate 51; a seedling separating baffle plate 52 is arranged on one side of the seedling lifting plate 51 away from the cutting table, and the height of the seedling separating baffle plate 52 is higher than that of the supporting platform.

The crop divider is used for dividing crops inside and outside the cutting area, and the front end of the crop divider is inserted into the crops during operation to divide the crops inside and outside the cutting area; because the height of the dividing baffle plate 52 is higher than that of the supporting platform, crops outside the cutting area are blocked outside the cutting table, the crops outside the cutting area and stalks between two reel chains are prevented from winding, and effective dividing of the crops is realized.

Preferably, referring to fig. 2, the harvester provided in this embodiment further includes a seed receiving tray 53;

a cavity for accommodating seeds is arranged in the seed receiving disc 53;

the seed receiving tray 53 is disposed at the front end of the header and is located at both sides of the reel inlet.

The cavity of the seed receiving tray 53 is used for collecting the seeds falling on the flower disc, so that the seeds falling into the field due to vibration of agricultural machinery and stalks in the operation process are prevented, and the waste of the seeds is avoided.

Preferably, referring to fig. 6, the harvester provided in this embodiment further includes a gap bridge conveying auger 61 and a kernel conveying auger 62;

the length direction of the gap bridge conveying auger 61 is perpendicular to the advancing direction of the cutting table and is arranged at the rear end of the cutting table, and is used for receiving the flower disc output from the reel outlet;

the bridge conveying auger 61 is provided with a spiral protrusion for conveying the flower discs positioned at two sides of the bridge conveying auger 61 along the length direction to the center of the bridge conveying auger 61 along the length direction, and for conveying the flower discs to the threshing mechanism for threshing;

the grain conveying auger 62 is connected between the gap bridge conveying auger 61 and the seed receiving tray 53, and is used for conveying grains falling into the seed receiving tray 53 to the gap bridge conveying auger 61. So as to recycle the seeds in the seed receiving tray 53 and prevent the seeds from overflowing after the seeds in the seed receiving tray 53 are filled up, thereby causing waste.

Preferably, as described with reference to fig. 12, the threshing mechanism is a multi-stage threshing mechanism;

the multi-stage threshing mechanism comprises a first-stage threshing mechanism 91, a second-stage threshing mechanism 92 and a third-stage threshing mechanism 93, and the multi-stage threshing mechanisms are sequentially communicated from head to tail and are arranged in a step-like manner;

the threshing element 711 of the threshing cylinder of the first-stage threshing mechanism 91 is a cylinder;

the threshing elements 711 of the threshing cylinder of the second-stage threshing mechanism 92 are cylinders, the radius of the cylinder body 71 of the second-stage threshing mechanism 92 is smaller than that of the cylinder body 71 of the first-stage threshing mechanism 91, and the number of the threshing elements 711 of the second-stage threshing mechanism 92 is smaller than that of the threshing elements 711 of the first-stage threshing mechanism 91;

the threshing elements 711 of the threshing cylinder of the third-stage threshing mechanism 93 are tooth-shaped, and the tooth tips of the tooth-shaped threshing elements 711 form obtuse angles; the third stage threshing mechanism 93 may be plural, for example, two, three, four, five, six or more.

Because threshing elements 711 on the threshing cylinder carry out friction threshing on the flower disc, threshing strength and intensity are not as high as those of the traditional threshing elements 711, the threshing rate of the flower disc is easy to be low, and aiming at the problem, the threshing efficiency is ensured by arranging a multi-stage threshing mechanism, the threshing intensity is enhanced and the threshing period is prolonged.

In summary, the multi-stage threshing mechanism provided in this embodiment can ensure the threshing rate of grains of the flower disc by arranging the multi-stage threshing mechanism, so that no waste of crops such as grains is caused, and the integrity of the flower disc is ensured by smoothly transiting the threshing element 711 on the threshing cylinder of each stage of threshing mechanism.

It should be noted that, the first stage threshing mechanism 91 is located at the front end of the flow path of the second stage threshing mechanism 92, and the second stage threshing mechanism 92 is located at the front end of the flow path of the third stage threshing mechanism 93, namely: the flower disc passing through the header firstly passes through the threshing action of the first-stage threshing mechanism 91, then passes through the threshing action of the second-stage threshing mechanism 92, and finally passes through the threshing action of the third-stage threshing mechanism 93.

In addition, the rotational speed of the threshing cylinder of the first stage threshing mechanism 91 is smaller than the rotational speed of the threshing cylinder of the second stage threshing mechanism 92, and the rotational speed of the threshing cylinder of the second stage threshing mechanism 92 is smaller than the rotational speed of the threshing cylinder of the third stage threshing mechanism 93.

The radius of the cylinder body 71 of the second stage threshing mechanism 92 is smaller than that of the cylinder body 71 of the first stage threshing mechanism 91, and the number of threshing elements 711 of the second stage threshing mechanism 92 is smaller than that of the threshing elements 711 of the first stage threshing mechanism 91, so that the friction area of the first stage threshing mechanism 91 to the flower disc is large, and the friction times of the threshing elements 711 to the flower disc are large.

When the threshing machine works, the flower disc firstly enters the first-stage threshing mechanism 91 with lower rotating speed to enable mature, full and easily-shed seeds to be shed rapidly, then the flower disc which is not shed is further enters the second-stage threshing mechanism 92 with higher rotating speed to enable the mature, full and easily-shed seeds on the flower disc to be shed completely, and only the less-mature, full seeds which are not easy to shed are left; the flower disc then enters the third-stage threshing mechanism 93 with the highest rotating speed, so that the residual less-easy-to-drop immature and plump seeds on the flower disc are shed under stronger friction, the threshing rate of the flower disc is further effectively ensured, and the integrity of the flower disc can be ensured.

The multi-stage threshing mechanism provided by the embodiment ensures that each stage of threshing mechanism has the functions, and the first-stage threshing mechanism 91 and the second-stage threshing mechanism 92 completely remove mature full and easy-to-shed seeds and then enter the third-stage threshing mechanism 93, so that the workload of the third-stage threshing mechanism 93 is reduced, the threshing period is further prolonged, and the threshing rate is ensured.

Preferably, as described with reference to fig. 2 and 12, the harvester provided in this embodiment further includes a flower disc bin 81 for collecting flower discs;

an output port of the third stage threshing mechanism 93 is connected with an elevator 94;

the lifting conveyer 94 is provided with a hook plate 941 for grabbing a flower disc;

the end of the elevator 94 communicates with the flower disc magazine 81.

The elevator 94 serves to elevate the flower trays output from the multi-stage threshing mechanism into the flower tray magazine 81, thereby collecting the flower trays for recycling.

Preferably, the lift 94 is provided with a hook plate 941 for gripping the flower disc, and the hook plate 941 can improve friction between the lift 94 and the flower disc, and prevent the flower disc from falling from the lift 94 during the lifting process and from being transported to the flower disc magazine 81.

Alternatively, elevator 94 may be a chain elevator 94 or a belt elevator 94.

Preferably, referring to fig. 2, the harvester provided in this embodiment further includes an output kernel auger;

the input port of the seed auger is used for collecting seeds output from the threshing mechanism, and the output port 63 of the seed auger is communicated with a seed conveying pipe 101;

one end of the grain conveying pipe 101 along the extending direction is provided with a fan 102 for conveying air pressure into the grain conveying pipe 101, and the other end of the grain conveying pipe is communicated with a grain bin 82 for collecting grains.

Seeds output from the threshing mechanism are conveyed into the seed conveying pipe 101 through a seed output auger, and the seeds in the seed conveying pipe 101 are blown into the seed bin 82 under the action of the fan 102 for collecting the seeds.

Specifically, as shown in fig. 3, a kernel inlet 1011 is formed in the kernel transport pipe 101, and an output port 63 of the kernel auger is connected to the kernel inlet 1011.

Preferably, referring to fig. 2, the grain conveyor 64 also comprises a grain conveyor inlet end communicated with the grain bin 82;

the grain auger 64 is hinged to the grain bin 82.

Optionally, the grain auger 64 is hinged to the grain bin 82 by a universal connector, and the grain auger 64 may be unfolded or folded: the grain bin 82 is unfolded when the grain is unloaded after being filled, so that the grain transporting vehicle can conveniently move to receive grains or unload grains at fixed points; the harvester is folded in the pulling or running process, so that the harvester is convenient to transfer.

Preferably, referring to fig. 1, the harvester provided in this embodiment further includes a lifting cylinder 103 for lifting the header, so as to adjust the height of the header to adapt to different sunflower varieties or sunflower flowers with different heights.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims

1. The harvester is characterized by comprising a header arranged at the front end of the harvester and a threshing mechanism communicated with the header;

the threshing mechanism comprises a threshing cylinder and a concave plate arranged at the bottom end of the threshing cylinder; the threshing cylinder comprises a cylinder body which can rotate along with a cylinder shaft; threshing elements are fixedly connected to the peripheral surface of the roller body, and the length direction of the threshing elements is parallel to the length direction of the roller body; the threshing elements are uniformly arranged along the circumferential direction of the roller body; the threshing element is smoothly transited everywhere;

the harvester further comprises a seed receiving disc, a cavity for accommodating seeds is arranged in the seed receiving disc, and the seed receiving disc is arranged at the front end of the header and positioned at two sides of the reel chain inlet;

the support platform comprises a first platform and a second platform with the same height on the platform plane; the gap between the first platform and the second platform corresponds to the gap between the two reel chains; one surface of the supporting platform, which is far away from the reel chain, is a plane; the support platform has a plurality of.

2. The harvester of claim 1, wherein the threshing element is a cylinder;

3. The harvester of claim 1, wherein the header is provided with crop dividers along two sides perpendicular to the direction of advance of the header;

4. The harvester of claim 1, further comprising a gap bridge conveyor auger and a kernel conveyor auger;

5. The harvester of claim 1, wherein the threshing mechanism is a multi-stage threshing mechanism;

6. The harvester of claim 5, further comprising a flower disc bin for collecting flower discs;

a hook plate for grabbing the flower disc is arranged on the elevator;

the end of the elevator is communicated with the flower disc bin.

7. The harvester of claim 6, further comprising an output kernel auger;

8. The harvester of claim 7, further comprising a grain auger having an input in communication with the grain bin;

the grain conveying auger is hinged with the grain bin.

9. The harvester of claim 1, further comprising a lift cylinder for lifting the header.