CN113455178A - Threshing device and threshing method of semi-feeding combine harvester - Google Patents

Abstract

The invention discloses a threshing device and a threshing method of a semi-feeding combine harvester, and belongs to the field of grain threshing. The device comprises a frame; a threshing drum section horizontally arranged in the frame; a first screen plate portion horizontally arranged below the threshing cylinder portion; a cleaning chamber arranged below the first screen plate portion; the impurity conveying auger is horizontally arranged below the cleaning chamber; the device also comprises a re-disengaging roller part which is horizontally arranged between the disengaging roller part and one side surface of the frame; the second sieve plate part is horizontally arranged below the re-threshing roller part and is matched with the re-threshing roller part to sieve grains in the residual impurity materials; the invention provides a threshing device, which is characterized in that a sundry lifting auger is obliquely fixed on one side surface of a rack, a feed inlet of the sundry lifting auger is communicated with a discharge outlet of the sundry conveying auger, and the discharge outlet of the sundry lifting auger conveys sundry materials to a re-threshing roller.

Description

Threshing device and threshing method of semi-feeding combine harvester

Technical Field

The invention belongs to the technical field of grain threshing, and particularly relates to a threshing device and a threshing method of a semi-feeding combine harvester.

Background

Along with the improvement of people's standard of living in recent years, millet, wheat etc. are as high-quality cereal, market demand is more and more, but the millet is the clean crop of difficult threshing, combine harvester that exists at present on the market is the vertical axial-flow type mostly, generally improves the threshing performance of harvester through increasing threshing cylinder length, longer threshing cylinder can increase the threshing time of crop, obtain better threshing effect, but when facing a large amount of crops to feed, very easily take place blocking phenomenon at thresher's feed inlet, cause threshing load to increase, the miscellaneous processing is unclean and leads to threshing cylinder axle fracture even.

At present, the trash generated in the harvesting and threshing process of the semi-feeding combined rice harvester is treated by a rethresher, namely, the unhulled residual ears are brushed by utilizing a blade rotating at a high speed for secondary combing, the threshed objects are conveyed above a vibrating screen again by a lifting auger for secondary separation, but when the millet is harvested, the rethreshing effect of the trash rethresher is poor, the trash rethresher is easy to block in operation, the reliability is poor, the cleaning effect is poor, the normal operation cannot be realized, and the structure of the existing semi-feeding combined rice harvester matched with the rethresher is complicated in redundancy, the occupied space is large, the equipment cost is high, and the maintenance cost is high.

Through retrieval, the Chinese patent publication number: CN 107960213A; the publication date is as follows: year 2018, month 4, day 27; the combine harvester comprises a combine body, the re-threshing cleaning device is mounted on the combine body and comprises a grain re-threshing roller, the grain re-threshing roller comprises an outer barrel, a feed inlet and a discharge outlet are formed in two ends of the outer barrel respectively, an inner barrel is coaxially arranged inside the outer barrel, the outer barrel and the inner barrel are rotatably assembled, auger blades used for conveying materials are arranged on at least one of the inner surface of the outer barrel or the outer surface of the inner barrel, a material conveying channel is formed between the inner barrel and the outer barrel, and a compression roller used for being matched with the inner surface of the outer barrel and/or the outer surface of the inner barrel to roll and thresh grains passing through is arranged between the inner barrel and the outer barrel. The device of this application rolls through the rethreshing cylinder and realizes the rethreshing of cereal, blocks the damage easily in the use, and the rethreshing effect of rolling action remains to be improved.

Disclosure of Invention

In order to solve at least one of the above technical problems, according to an aspect of the present invention, there is provided a threshing device of a head-feed combine harvester, the device comprising:

a frame;

a threshing drum section horizontally arranged in the frame;

the first sieve plate part is horizontally arranged below the threshing cylinder part and is matched with the threshing cylinder part to sieve grains in the rice materials;

the cleaning chamber is arranged below the first sieve plate part, cleans the grains in the materials screened by the first sieve plate part and discharges the impurity materials from the lower part of the cleaning chamber;

the residue conveying auger is horizontally arranged below the cleaning chamber and used for directionally conveying residue materials discharged from the cleaning chamber to the outer side of the rack;

further comprising:

the re-threshing drum part is horizontally arranged between the threshing drum part and one side surface of the rack;

the second sieve plate part is horizontally arranged below the re-threshing roller part and is matched with the re-threshing roller part to sieve grains in the residual impurity materials;

and the impurity lifting auger is obliquely fixed on one side surface of the frame, a feed inlet of the impurity lifting auger is communicated with a discharge outlet of the impurity transmission auger, and a discharge outlet of the impurity lifting auger transmits impurity materials to the re-threshing roller part.

According to the threshing device of the semi-feeding combine harvester provided by the embodiment of the invention, optionally, the cleaning chamber is positioned below the first sieve plate part and the second sieve plate part at the same time.

According to the threshing device of the semi-feeding combine harvester provided by the embodiment of the invention, optionally, the threshing roller part is an arch-tooth type roller, and the first sieve plate part is a concave sieve.

According to an embodiment of the invention, the threshing device of the semi-feeding combine harvester, optionally, the re-threshing roller part comprises:

the middle shaft is rotatably connected with the rack;

the circular tube is sleeved and fixed on the outer side wall of the intermediate shaft;

the auger blade is spirally fixed on the outer side wall of the circular tube in a surrounding way;

a plurality of cutter teeth which are connected with the outer side edge of the auger blade and extend outwards;

the axis of the middle shaft is parallel to the axis of the threshing cylinder part.

According to the threshing device of the semi-feeding combine harvester provided by the embodiment of the invention, optionally, the cutter teeth are detachably connected with the auger blades.

According to the threshing device of the semi-feeding combine harvester of the embodiment of the invention, optionally, the second sieve plate part is a concave sieve.

According to the threshing device of the semi-feeding combine harvester provided by the embodiment of the invention, optionally, the outer side wall of the circular tube at the tail end of the auger blade is fixedly connected with the grass discharging plate, and the grass discharging plate is arranged along the radial direction of the circular tube;

grass outlets are formed in the side face of the machine frame corresponding to the grass discharge plate.

According to the threshing device of the semi-feeding combine harvester provided by the embodiment of the invention, optionally, a sundry residue inlet is formed in the side surface of the frame corresponding to the head end of the auger blade, and a discharge hole of the sundry residue lifting auger is communicated with the sundry residue inlet;

the cleaning plate is fixedly connected to a rotating shaft at the discharge port of the impurity lifting auger and is arranged along the radial direction of the rotating shaft.

According to the threshing device of the semi-feeding combine harvester provided by the embodiment of the invention, optionally, the second sieve plate part sequentially comprises a first section, a middle section and a tail section from one end to the other end, the sieve pore area at the first section is the largest, and the sieve pore area at the middle section is the smallest;

the tail section is positioned below the grass discharging plate.

According to another aspect of the present invention, there is provided a threshing method of a threshing device of a semi-feeding combine harvester, comprising the steps of:

firstly, feeding, namely adding a rice material into a threshing cylinder part;

secondly, primary threshing, wherein the threshing roller part is matched with the first sieve plate part to sieve grains in the rice materials to a cleaning chamber;

thirdly, primary cleaning, wherein the cleaning chamber is used for selecting grains in the materials screened by the first sieve plate part and discharging the impurity materials from the lower part of the cleaning chamber to the impurity conveying auger;

fourthly, impurity conveying, namely conveying the impurity materials to a feeding port of an impurity lifting auger by an impurity conveying auger in a fixed direction, and conveying the impurity materials to an impurity feeding port of a re-threshing roller part by the impurity lifting auger;

fifthly, re-threshing, wherein the re-threshing roller part is matched with a second sieve plate part to sieve grains in the impurity materials to a cleaning chamber, and the forage in the impurity materials is discharged from a forage outlet;

and sixthly, secondary cleaning, wherein the cleaning room selects out the grains in the materials screened by the second sieve plate part.

Advantageous effects

Compared with the prior art, the invention at least has the following beneficial effects:

(1) according to the threshing device of the semi-feeding combine harvester, the re-threshing roller part and the second sieve plate part are added in the original space of the frame, an old impurity re-thresher is replaced, the equipment space is saved, impurity materials after primary threshing of the threshing roller part are transmitted to the re-threshing roller part through the impurity transmission packing auger and the impurity lifting packing auger for secondary threshing, the overall threshing time of the threshing device is prolonged on the premise that the length of the threshing roller part is not lengthened and the occupied space of the equipment is not enlarged, and the threshing rate is improved;

(2) according to the threshing device of the semi-feeding combine harvester, the threshing cylinder part adopts the arch-tooth type cylinder and can continuously comb, brush and hit rice materials when rotating, so that grain is promoted to be separated, the first sieve plate part adopts the concave plate sieve, the area of the fed rice materials under the combing effect can be increased, and the threshing work efficiency can be improved;

(3) according to the threshing device of the semi-feeding combine harvester, the re-threshing roller part can convey sundry materials and simultaneously realize re-threshing, so that the blockage of a large amount of materials during feeding can be effectively avoided, the operation efficiency is improved, the threshing device is simple in structure, high in reliability and convenient to maintain, the re-threshing effect can be improved due to the design of the cutter teeth, and the threshing rate is further improved;

(4) according to the threshing device of the semi-feeding combine harvester, the cutter teeth of the re-threshing roller part are detachably connected with the auger blades, so that the replacement and maintenance of the cutter teeth are convenient, and the condition that the re-threshing roller part is damaged and fails due to the damage of one or more cutter teeth is prevented;

(5) according to the threshing device of the semi-feeding combine harvester, the tail end of the re-threshing roller part is provided with the grass outlet, and the weed discharging plate can discharge the weed, branch and stalk and other sundries which are subjected to re-threshing in time;

(6) according to the threshing device of the semi-feeding combine harvester, the size of the sieve pores of the second sieve plate part is specially set, so that normal sifting of grains can be guaranteed on the premise of reducing weed sifting, and the threshing rate is guaranteed;

(7) the threshing method of the threshing device of the semi-feeding combine harvester has long total threshing time, and after the rice materials are threshed, the impurity materials are transmitted for secondary threshing, so that the threshing rate is high, and the cleaning effect is good.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below, and it is apparent that the drawings in the following description only relate to some embodiments of the present invention and are not limiting on the present invention.

Fig. 1 shows a schematic view of the structure of a threshing device of a semi-feeding combine harvester of the invention;

fig. 2 shows a side view of a semi-feeding combine harvester threshing apparatus of the present invention;

FIG. 3 shows a schematic view of the internal structure of the threshing device of the semi-feeding combine harvester of the invention;

FIG. 4 shows a schematic view of the hybrid lift system of the present invention;

FIG. 5 illustrates another perspective view of the present invention debris lift system;

figure 6 shows a schematic view of a second drum section and a second screen section of the present invention;

FIG. 7 shows a schematic view of a second drum portion of the invention;

figure 8 shows a second screen section schematic of the invention;

FIG. 9 shows an enlarged view at A in FIG. 6;

reference numerals:

1. a frame;

2. a threshing drum part; 20. arch teeth;

3. a first screen panel portion;

4. a cleaning chamber;

5. conveying the remaining mixture by a packing auger;

6. a roller part is taken off again; 60. an intermediate shaft; 61. a circular tube; 62. a screw blade; 63. cutter teeth; 64. grass discharging plates; 65. a reinforcing plate;

7. a second screen panel portion; 70. screening holes; 71. a first stage; 72. a middle section; 73. a tail section;

8. the sundry residue lifting auger; 80. and (4) cleaning the board.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another.

Example 1

The half-feed combine harvester threshing device of the embodiment comprises:

a frame 1;

a threshing drum part 2 horizontally arranged in the frame 1;

the first sieve plate part 3 is horizontally arranged below the threshing roller part 2, and the first sieve plate part 3 is matched with the threshing roller part 2 to sieve grains in the rice materials;

the cleaning chamber 4 is arranged below the first sieve plate part 3, and the cleaning chamber 4 cleans grains in the materials sieved by the first sieve plate part 3 and discharges the impurity materials from the lower part of the cleaning chamber 4;

the residue impurity conveying auger 5 is horizontally arranged below the cleaning chamber 4 and used for directionally conveying residue impurities discharged from the cleaning chamber 4 to the outer side of the rack 1;

further comprising:

the re-threshing drum part 6 is horizontally arranged between the threshing drum part 2 and one side surface of the frame 1;

the second sieve plate part 7 is horizontally arranged below the re-threshing roller part 6, and the second sieve plate part 7 is matched with the re-threshing roller part 6 to sieve grains in the impurity materials;

and the impurity lifting auger 8 is obliquely fixed on one side surface of the frame 1, a feed inlet of the impurity lifting auger 8 is communicated with a discharge outlet of the impurity transmission auger 5, and a discharge outlet of the impurity lifting auger 8 transmits impurity materials to the re-threshing roller part 6.

The threshing device of the existing semi-feeding combine harvester structurally comprises a threshing cylinder part 2 horizontally arranged on a frame 1, the threshing cylinder part 2 rotates around the axis of the threshing cylinder part under the driving of a transmission unit, a combing brush is interacted with a first sieve plate part 3 arranged below the threshing cylinder part in the rotating process to add rice materials of the threshing device, grains on rice ears are removed, the removed grains fall from sieve holes of the first sieve plate part 3, meanwhile, broken ears broken along with the combing brush are screened off, the remaining ears are doped with grains which do not fall, the grains screened off from the first sieve plate part 3 can fall to a cleaning chamber 4 arranged below the first sieve plate part 3, the cleaning chamber 4 comprises a fan, a vibrating screen, an air suction fan and other components, the materials fall to the cleaning chamber 4, the debris is blown away by the fan, the vibrating screen screens out the removed grains, and the broken ears for removing the grains and larger and heavier weeds, The miscellaneous materials such as straws and the like are discharged from the lower part of the cleaning chamber 4 and fall to an miscellaneous transmission auger 5 horizontally arranged below the cleaning chamber 4, the miscellaneous transmission auger 5 directionally transmits the miscellaneous materials to the outer side of the frame 1, the miscellaneous materials are sent to a re-thresher to re-shed the miscellaneous materials, the secondary carding is carried out by utilizing blades rotating at high speed to brush the incomplete ears which are not completely shed, then the threshed objects are conveyed to the upper part of the vibrating screen again by a lifting auger to carry out secondary separation, the existing threshing device has poor re-threshing efficiency, the cleaning effect of the materials after re-threshing is poor, blockage is easy to cause, the structure of the re-thresher is complicated in redundancy, the equipment cost and the maintenance cost are high, the threshing time is usually prolonged by lengthening the threshing cylinder part 2 of the threshing cylinder part of the traditional threshing device, and the adjustment needs to adaptively adjust the structures of the frame 1, the cleaning plate part 3 of the first screen, the cleaning chamber 4 and the like, and the occupied space of the equipment can be increased, the use is limited, and the transportation difficulty is increased.

Aiming at the problems, the invention provides a threshing device of a semi-feeding combine harvester.

As shown in figures 1, 2 and 3, the embodiment is improved based on the existing threshing device of the semi-feeding combine harvester, the impurity conveying auger 5 directionally conveys the impurity materials to the outer side of the frame 1, the embodiment is provided with the impurity lifting auger 8 communicated with the tail end of the impurity conveying auger 5 and the discharge port of one end of the material, one end part of the impurity lifting auger 8, namely a feed port, is communicated with the discharge port of the impurity conveying auger 5, the impurity materials conveyed from the impurity conveying auger 5 can enter the impurity lifting auger 8, the impurity lifting auger 8 is fixed on the outer side surface of the frame 1 and is arranged obliquely, the feed port of the impurity lifting auger 8 is positioned at the lower part of the frame 1, the discharge port is positioned at the upper part of the frame 1, the impurity materials are directionally lifted and conveyed to the discharge port through the impurity lifting auger 8, the discharge port of the impurity lifting auger 8 is communicated with the repeated threshing drum part 6, the method comprises the steps of feeding sundries into a re-threshing roller part 6, arranging the re-threshing roller part 6 between a threshing roller part 2 and one side face of a rack 1, namely arranging the re-threshing roller part in the rack 1, arranging a second sieve plate part 7 below the re-threshing roller part 6, re-threshing the sundries at the re-threshing roller part 6 according to the principle of separating from the threshing roller part 2, combing the sundries through the action of the re-threshing roller part 6 and the second sieve plate part 7, performing secondary threshing on residual ears in the sundries, and screening off grains from the second sieve plate part 7 to finish re-threshing.

The threshing device of the semi-feeding combine harvester of the embodiment is characterized in that the re-threshing roller part 6 and the second sieve plate part 7 are added in the original space of the frame 1 to replace an old impurity re-thresher, so that the equipment space is saved, the impurity materials after primary threshing of the threshing roller part 2 are transmitted to the re-threshing roller part 6 through the impurity transmission auger 5 and the impurity lifting auger 8 for secondary threshing, the total threshing time of the threshing device is prolonged on the premise of not lengthening the length of the threshing roller part 2 and not increasing the occupied space of the equipment, and the threshing rate is improved.

In this embodiment, the trash conveying auger 5 and the trash lifting auger 8 form a trash lifting system, the trash conveying auger 5 and the trash lifting auger 8 are both spiral feeding structures commonly used in the material conveying field, and can realize the directional conveying function under the condition of directional rotation, two ends of the trash lifting auger 8 are respectively a feeding end and a discharging end, the feeding end is the end connected with the trash conveying auger 5, the trash is fed from the feeding end and is located at the lower part of the rack 1, the discharging end is the end to which the trash is finally conveyed, the trash is conveyed to the end and then discharged, and the trash is located at the upper part of the rack 1 and is flush with the re-threshing roller part 6 in height.

Further, the cleaning chamber 4 is located both below the first screen section 3 and below the second screen section 7.

As shown in FIG. 3, the materials screened by the first screen plate part 3 and the second screen plate part 7 fall into the cleaning chamber 4 for cleaning.

Example 2

The threshing device of the semi-feeding combine harvester is further improved on the basis of embodiment 1, the threshing roller part 2 is an arch-tooth type roller, and the first sieve plate part 3 is a concave sieve.

As shown in figure 3, the arch-tooth type roller, namely, a plurality of arch teeth 20 are formed on the side wall of the roller in a protruding way, so that the corn material can be brushed and beaten continuously when rotating, thereby promoting the corn to be separated, the concave plate sieve can increase the area of the fed corn material which receives the combing and brushing action, and the threshing work efficiency can be improved.

Example 3

The threshing device of the semi-feeding combine harvester of the embodiment is further improved on the basis of the embodiment 2, and the re-threshing roller part 6 comprises:

an intermediate shaft 60 rotatably connected to the frame 1;

a circular tube 61 which is fixedly sleeved on the outer side wall of the intermediate shaft 60;

the auger blade 62 is spirally fixed on the outer side wall of the circular tube 61 in a surrounding way;

a plurality of cutter teeth 63 which are connected with the outer edge of the auger blade 62 and extend outwards;

the axis of the middle shaft 60 is parallel to the axis of the threshing cylinder part 2.

As shown in fig. 6 and 7, the intermediate shaft 60 of the rethreshing drum part 6 of the present embodiment is rotatably connected to the frame 1, one end of the intermediate shaft 60 is rotatably connected to the frame 1 through a bearing seat structure, the other end of the intermediate shaft 60 is also rotatably connected to the frame 1 through a bearing seat structure, and is in transmission connection with a transmission structure such as a motor through a shaft coupling structure and the like, the transmission structure can drive the intermediate shaft 60 to rotate, the circular tube 61 is a hollow tube member, which is sleeved on the intermediate shaft 60 and welded and fixed to the intermediate shaft 60, so as to protect the intermediate shaft 60, the auger blade 62 is a helical blade, and can achieve the effect of directional transportation of materials when axially rotating, the auger blade 62 is fixed to the outer side wall of the circular tube 61 through a welding manner, a plurality of cutter teeth 63 are uniformly arranged at the edge of the auger blade 62, each cutter tooth 63 protrudes outward from the edge of the auger blade 62, and when the auger blade 62 rotates to transport materials, the cutter teeth 63 arranged at intervals can continuously hit the materials.

The miscellaneous residue lifting auger 8 feeds the miscellaneous residue material into one end of the re-removing drum part 6, the auger blade 62 of the re-removing drum part 6 is driven by the circular tube 61 to rotate, so that the miscellaneous residue material is directionally conveyed to the other end of the re-removing drum part 6 along the length direction of the re-removing drum part 6, the cutter teeth 63 connected to the edge of the auger blade 62 move along with the rotation of the auger blade 62, the miscellaneous residue material between the auger blade 62 and the second sieve plate part 7 can be continuously beaten, grains in the residual ears are removed, the grains are sieved from the sieve pores 70 of the second sieve plate part 7, and the grains in the miscellaneous material can be continuously sieved under the beating action of the cutter teeth 63 along the length direction of the re-removing drum part 6 along with the continuous directional movement of the miscellaneous residue material along the length direction of the re-removing drum part 6.

The re-threshing roller part 6 of the embodiment can realize re-threshing when conveying sundry materials, can effectively avoid blockage when a large amount of materials are fed, improves the operation efficiency, has a simple structure, is high in reliability and convenient to maintain, and the design of the cutter teeth 63 can improve the re-threshing effect and improve the threshing rate.

Example 4

The threshing device of the semi-feeding combine harvester is further improved on the basis of the embodiment 3, and the cutter teeth 63 are detachably connected with the auger blades 62.

In this embodiment, the cutter teeth 63 are detachably connected with the auger blades 62 through bolt structures, one end of each cutter tooth 63 is a striking part which is in a triangular shape and has a tip end, the other end of each cutter tooth is a fixing part, bolt holes are formed in the fixing part, bolt holes are also formed in corresponding positions of the edges of the auger blades 62, and the cutter teeth 63 are fixedly connected with the auger blades 62 through bolts.

Because during grain rethreshing, the sword tooth 63 can constantly hit and beat miscellaneous surplus material, has wearing and tearing on the one hand, and on the other hand often receives the impact force and the junction of auger blade 62 is inefficacy easily, adopts the mode of can dismantling the connection to make things convenient for the change maintenance of sword tooth 63, prevents that single or a plurality of sword tooth 63 damages to lead to damaging the condition emergence that rethread drum portion 6 became invalid.

Example 5

The threshing device of the semi-feeding combine harvester of the embodiment is further improved on the basis of the embodiment 4, and the second sieve plate part 7 is a concave sieve.

As shown in fig. 6 and 8, the second sieve plate part 7 is a concave plate sieve structure, the middle part is concave, the side view is semicircular, the concave radian of the concave plate sieve is matched with the radian of the re-threshing roller part 6, a distance is reserved between the concave side surface of the second sieve plate part 7 and the auger blade 62, the minimum distance between the concave side surface of the second sieve plate part 7 and the auger blade 62 is larger than zero, the rotation of the auger blade 62 cannot be influenced, meanwhile, the concave plate sieve structure increases the area of the impurity materials contacting the second sieve plate part 7 and the auger blade 62, the material transmission efficiency is improved, the probability that the cutter tooth 63 effectively strikes the impurity materials is also improved, and the threshing rate is improved.

Example 6

The threshing device of the semi-feeding combine harvester of the embodiment is further improved on the basis of the embodiment 5, the outer side wall of a circular tube 61 at the tail end of an auger blade 62 is fixedly connected with a grass discharging plate 64, and the grass discharging plate 64 is arranged along the radial direction of the circular tube 61;

a grass outlet is arranged on the side surface of the frame 1 corresponding to the grass discharging plate 64.

As shown in fig. 7, the grass discharging plate 64 is fixed at the end of the re-threshing roller part 6 for conveying the material, when the intermediate shaft 60 of the re-threshing roller part 6 rotates directionally, the material is conveyed in a fixed direction, the impurity material is added from the head end of the re-threshing roller part 6, the material completes secondary re-threshing in the transmission process along with the rotation of the intermediate shaft 60, the amount of grains in the impurity material conveyed to the grass discharging plate 64 is very small, the impurity such as weeds, branches and stalks can be pulled out from the gap between the re-threshing roller part 6 and the second sieve plate part 7 through the grass discharging plate 64, and the impurity is discharged from a grass outlet arranged on the side surface of the frame 1, so that the grass discharging effect is achieved.

Further, the number of the grass discharge plates 64 can be two or more than two, so that the grass discharge efficiency can be improved.

Further, this embodiment still is provided with reinforcing plate 65 welded fastening on the tip terminal surface that pipe 61 is connected with row grass board 64, through the setting of reinforcing plate 65, make a side of row grass board 64 can with reinforcing plate 65 fixed welding, thereby row grass board 64 fixed knot constructs's intensity has been reinforceed, because row grass board 64 can be atress at row grass in-process, the atress is in the junction of row grass board 64 and pipe 61, row grass board 64 only leans on with pipe 61 a welded construction fixed unreliable, it can strengthen fixed effect to set up reinforcing plate 65.

Example 7

The threshing device of the semi-feeding combine harvester is further improved on the basis of the embodiment 6, a sundry residue feeding hole is formed in the side face, corresponding to the head end of the auger blade 62, of the rack 1, and a discharging hole of the sundry residue lifting auger 8 is communicated with the sundry residue feeding hole;

the rotating shaft at the discharge port of the impurity lifting auger 8 is fixedly connected with a cleaning plate 80, and the cleaning plate 80 is arranged along the radial direction of the rotating shaft.

As shown in fig. 2, the miscellaneous lifting auger 8 is obliquely arranged on the side surface of the frame 1, the lower end of the miscellaneous lifting auger 8 is a feeding port, the upper end of the miscellaneous lifting auger 8 is a discharging port, the side surface of the frame 1 at the position corresponding to the discharging port is provided with an miscellaneous feeding port, the miscellaneous feeding port also corresponds to the head end of an auger blade 62 of the rethreshing drum part 6 in the frame 1, and the miscellaneous materials discharged from the miscellaneous lifting auger 8 can be fed into the rethreshing drum part 6 through the miscellaneous feeding port.

As shown in fig. 4 and 5, the residual material lifting and transporting of the residual material by the residual lifting auger 8 is realized by rotating the rotating shaft to drive the helical blades to directionally transport the material, in this embodiment, the cleaning plate 80 is fixedly connected to the rotating shaft at the discharge port of the residual lifting auger 8, the cleaning plate 80 rotates along with the rotating shaft, and when the residual material is transported to the discharge port of the residual lifting auger 8, the residual material is stirred into the residual material inlet under the rotation of the cleaning plate 80, so that the residual material is fed into the re-releasing drum part 6.

Example 8

The threshing device of the semi-feeding combine harvester of the embodiment is further improved on the basis of the embodiment 7, the second sieve plate part 7 sequentially comprises a first section 71, a middle section 72 and a tail section 73 from one end to the other end, the area of the sieve holes 70 at the first section 71 is the largest, and the area of the sieve holes 70 at the middle section 72 is the smallest;

the tail section 73 is located below the grass discharge plate 64.

As shown in fig. 8, when the impurity material is fed into the repeated stripping drum part 6, the impurity material is transported from the first section 71 of the second screen part 7, through the middle section 72, and finally to the end section 73, then the waste materials are discharged by the grass discharging plate 64, the waste materials which are just added into the re-threshing drum part 6 are not frequently beaten by the cutter teeth 63, the sieve holes 70 with large area are beneficial to primarily sieving off the grains which are easy to fall off, the waste materials are transported to the middle section 72 and then beaten by the cutter teeth 63, the grains in the materials can be beaten to fall off, meanwhile, the weeds are also easy to be broken, so the middle section 72 is provided with a smaller sieve pore 70, the screening amount of the weeds and the branches is reduced, when the miscellaneous materials are transported to the tail section 73, the grains in the miscellaneous materials are basically fallen off, meanwhile, weeds are also relatively finely crushed, but leave the beating area of the cutter teeth 63 at the moment, and the sieve holes 70 with the proper pore diameter are arranged at the beating area for final sieving.

Further, in this embodiment, the sieve holes 70 are rectangular, the widths of the sieve holes 70 at different positions are the same and are 5mm, the length of the sieve hole 70 at the first section 71 is 120mm, the sieve holes 70 at the middle section 72 are formed by ten rows of 50mm sieve holes 70 along the length direction, and the sieve holes 70 at the tail section 73 are formed by three rows of sieve holes 70 with the lengths of 74.5mm, 60mm and 60mm in sequence along the length direction.

Further, as shown in fig. 9, the minimum distance L between the knife teeth 63 and the concave side surface of the second sieve plate portion 7 is 5mm in this embodiment, and this distance is designed for rethreshing the miscellaneous materials of wheat and grains, so that when the rethreshing drum portion 6 rethreads, the knife teeth 63 can effectively hit the grains in rethreshing the miscellaneous materials, and meanwhile, excessive extrusion damage to the grains is not generated, and the rethreshing drum portion 6 does not have the phenomenon of being stuck when rotating.

Example 9

The threshing method of the threshing device of the semi-feeding combine harvester comprises the following steps:

firstly, feeding, namely adding rice materials into a threshing cylinder part 2;

secondly, primary threshing, namely, the threshing roller part 2 is matched with the first sieve plate part 3 to sieve grains in the rice materials to a cleaning room 4;

thirdly, primary cleaning, wherein the cleaning chamber 4 is used for selecting grains in the materials screened by the first sieve plate part 3 and discharging the impurity materials from the lower part of the cleaning chamber 4 to the impurity conveying auger 5;

fourthly, impurity conveying, namely conveying the impurity materials to a feeding port of an impurity lifting auger 8 in a fixed direction by an impurity conveying auger 5, and then conveying the impurity materials to an impurity feeding port of a re-threshing roller part 6 by the impurity lifting auger 8;

fifthly, re-threshing, wherein the re-threshing roller part 6 is matched with the second sieve plate part 7 to sieve grains in the impurity materials to the cleaning chamber 4, and the forage in the impurity materials is discharged from a forage outlet;

and sixthly, secondary cleaning, wherein the cleaning room 4 is used for selecting grains in the materials screened by the second screen plate part 7.

By the threshing method, the total threshing time is long, after the rice materials are threshed, the impurity materials are conveyed for secondary threshing, the threshing rate is high, and the cleaning effect is good.

The examples described herein are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall within the protection scope of the present invention.

Claims (10)

1. A threshing device of a semi-feeding combine harvester, which comprises,

a frame;

a threshing drum section horizontally arranged in the frame;

the first sieve plate part is horizontally arranged below the threshing cylinder part and is matched with the threshing cylinder part to sieve grains in the rice materials;

the cleaning chamber is arranged below the first sieve plate part, cleans the grains in the materials screened by the first sieve plate part and discharges the impurity materials from the lower part of the cleaning chamber;

the residue conveying auger is horizontally arranged below the cleaning chamber and used for directionally conveying residue materials discharged from the cleaning chamber to the outer side of the rack;

it is characterized by also comprising:

the re-threshing drum part is horizontally arranged between the threshing drum part and one side surface of the rack;

the second sieve plate part is horizontally arranged below the re-threshing roller part and is matched with the re-threshing roller part to sieve grains in the residual impurity materials;

and the impurity lifting auger is obliquely fixed on one side surface of the frame, a feed inlet of the impurity lifting auger is communicated with a discharge outlet of the impurity transmission auger, and a discharge outlet of the impurity lifting auger transmits impurity materials to the re-threshing roller part.

2. A semi-feeding combine harvester threshing apparatus according to claim 1, wherein: the cleaning room is located first sieve portion and second sieve portion below simultaneously.

3. A semi-feeding combine harvester threshing apparatus according to claim 2, wherein: the threshing cylinder part is an arch-tooth cylinder, and the first sieve plate part is a concave sieve.

4. A semi-feeding combine harvester threshing apparatus according to claim 3, wherein the re-threshing drum section comprises:

the middle shaft is rotatably connected with the rack;

the circular tube is sleeved and fixed on the outer side wall of the intermediate shaft;

the auger blade is spirally fixed on the outer side wall of the circular tube in a surrounding way;

a plurality of cutter teeth which are connected with the outer side edge of the auger blade and extend outwards;

the axis of the middle shaft is parallel to the axis of the threshing cylinder part.

5. A semi-feeding combine harvester threshing apparatus according to claim 4, wherein: the cutter teeth are detachably connected with the auger blade.

6. A semi-feeding combine harvester threshing apparatus according to claim 4, wherein: the second screen plate portion is a concave screen.

7. A semi-feeding combine harvester threshing apparatus according to claim 4, wherein:

the outer side wall of the round pipe at the tail end of the auger blade is fixedly connected with a grass discharging plate, and the grass discharging plate is arranged along the radial direction of the round pipe;

grass outlets are formed in the side face of the machine frame corresponding to the grass discharge plate.

8. A semi-feeding combine harvester threshing apparatus according to claim 7, wherein:

a sundry feed inlet is formed in the side face of the frame corresponding to the head end of the screw blade, and a discharge port of the sundry lifting screw is communicated with the sundry feed inlet;

the cleaning plate is fixedly connected to a rotating shaft at the discharge port of the impurity lifting auger and is arranged along the radial direction of the rotating shaft.

9. A semi-feeding combine harvester threshing apparatus according to claim 8, wherein: the second sieve plate part sequentially comprises a first section, a middle section and a tail section from one end to the other end, the sieve mesh area at the first section is the largest, and the sieve mesh area at the middle section is the smallest;

the tail section is positioned below the grass discharging plate.

10. A threshing method of a threshing device of a semi-feeding combine harvester is characterized by comprising the following steps:

firstly, feeding, namely adding a rice material into a threshing cylinder part;

secondly, primary threshing, wherein the threshing roller part is matched with the first sieve plate part to sieve grains in the rice materials to a cleaning chamber;

thirdly, primary cleaning, wherein the cleaning chamber is used for selecting grains in the materials screened by the first sieve plate part and discharging the impurity materials from the lower part of the cleaning chamber to the impurity conveying auger;

fourthly, impurity conveying, namely conveying the impurity materials to a feeding port of an impurity lifting auger by an impurity conveying auger in a fixed direction, and conveying the impurity materials to an impurity feeding port of a re-threshing roller part by the impurity lifting auger;

fifthly, re-threshing, wherein the re-threshing roller part is matched with a second sieve plate part to sieve grains in the impurity materials to a cleaning chamber, and the forage in the impurity materials is discharged from a forage outlet;

and sixthly, secondary cleaning, wherein the cleaning room selects out the grains in the materials screened by the second sieve plate part.

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