CN207340565U - A kind of threshing cleaning unit and the millet combined harvester with the device - Google Patents

Abstract

A kind of threshing cleaning unit and the millet combined harvester with the device, belong to crop harvesting technical field.The utility model includes threshing separation unit and grain cleaning portion；The threshing cylinder of threshing separation unit includes cylinder after closed taper placket and open type；Cylinder includes the drum shaft coaxially connected with closed taper placket, the width disk for being connected to drum shaft both ends, the circumferential multiple threshing toothed bars for being distributed in drum shaft and being connected on width disk after open type；Part threshing toothed bar in multiple threshing toothed bars and every are equipped with a rasp bar ratch and multiple Lysimachia sikokiana teeth, and part threshing toothed bar and every are equipped with a combination ratch and multiple Lysimachia sikokiana teeth；Combination ratch is alternateed to be spaced by multiple threshing tooths and multiple arcs elastic claw to be formed；Grain cleaning portion includes the scroll centrifugal fan using arc plate leaf piece, has the reciprocating oscillating screen of double braid net and separator ridlle.The utility model threshing time is long, separating area is big, reduction is sieved with the paste of green stalk and blade, it is convenient to dismount, it is strong to clean ability.

Description

A kind of threshing cleaning unit and the millet combined harvester with the device

Technical field

It the utility model is related to crop harvesting technical field, more particularly to a kind of threshing cleaning unit and use the device Millet combined harvester.

Background technology

In recent years, coarse cereals consumption demand is significantly increased with the popularization and market of domestic high-quality hybrid millet, millet Production starts to be able to pay attention to and expand, and the Production Gain and plantation enthusiasm of peasant also greatly improve.However, millet is influenced at present Production maximum " bottleneck " surely belongs to harvest.

Millet belongs to small crop, and the green maturation of stalk band, grain ear hangs low, seed is small, grain is light, and paddy code is separated with stalk during harvest Difficulty, seed are not easy to purify, and entrainment is high with cleaning loss percentage, damage the problems such as serious and protrude.

At present, having been used for the roller of the grain threshing in market has three kinds, and one kind is single longitudinal axial flow finger-like tooth threshing cylinder, the Two kinds are double transverse-axis-flow rasp bar tooth threshing cylinders, the third is single crosscutting flow liner bar tooth threshing cylinder.The former, hitting power is strong, takes off Grain time length, you can to harvest rice, wheat, rape, can also suitably change roller or notch board ginseng according to received agrotype The means such as number harvest the seed class crop such as soybean, Semen Coicis, millet, and extremely well-adapted, belong to " omnipotent " threshing system.But deficiency Be finger-like tooth hitting power it is big and kneading force is small, its powerful impact force is not only difficult to control percentage of damage, is also also easy to produce big Amount crushing straw and to it is lower clean together bring load increase.Second, kneading force is strong, and hitting power is small.Two total length rasp bar rollings The powerful rubbing rate of cylinder and spiral long-time threshing can destroy the shell of millet and make percentage of damage index exceeding standard, equally also uncomfortable Rice should be harvested.The third, though also using the very strong full rasp bar threshing of kneading force, single crosscutting stream mode is to the crop threshing time Very short, stalk is more complete after taking off, and fringe rate of breaking is low, is conducive to subsequent treatment.Can unfortunately, since impact force is relatively weak it take off Only rate is general, is not suitable for the difficult de- crop such as harvest rice, when feeding is uneven, cereal humidity is larger, under threshing quality is obvious Drop.Therefore only still have utilization less than 4 meters to harvest in wheat, the wheeled type based on soybean in working width at present, and to damage Mistake rate is more demanding or the type of the difficult de- crop of harvest is gradually replaced by double or three crosscutting stream rollers, single longitudinal axial flow drum with rasp bars Generation.Double longitudinal axial flow drums with rasp bars are generally used in the large scale computer of American-European 6 meters and above working width.

See that the vibrating screen cleaned for millet also there are three kinds at present.One kind is that double-deck fish scale sieve adds four straw walkers Vibrating screen, due to can effectively prevent the miscellaneous remaining collection grain that enters such as short stem, capes code, blade to twist after double-deck fish scale sieve angle leveling Dragon, and four straw walkers are very strong to miscellaneous remaining disposal abilities such as short stem, empty paddy code, blades, can easily adapt to millet Emersion object is cleaned, it is disadvantageous that the Structure of Vibrating Screen is complicated and takes up space big.Second is upper strata adjustable angle sieve Piece, lower floor's braiding sieve vibrating screen, relative to the former, due to the board-like sieve that its upper strata is adjustable angle, lower floor is punching steel Plate or braided steel wire web frame, it is for fine grain crop, it is necessary to upper strata is board-like based on harvesting rice and wheat and larger seed crop Sieve opening is turned down, lower floor replace smaller mesh braided steel wire net tackled, relative to double-deck fish scale sieve add four keyed by For original text device vibrating screen, disposal ability is slightly weak with adaptability.The third be commonly used on rape harvest machine without installation afterbody The Double-level Reticulated chip vibrating sieve of separator ridlle, the vibrating screen is due to eliminating afterbody separator ridlle, though the miscellaneous remaining energy of long stalk is thrown backward Power has weakened, but also reduces percentage of impurity because greatly reducing the secondary treating capacity for taking off feedback again at the same time, therefore is usually used in receiving Obtain to taking off again on crop of less demanding.

The first patent of invention ZL2015105537826 of applicant discloses a kind of millet combined harvester and its threshing and cleaning Device and threshing and cleaning system, and specifically disclose threshing cleaning unit and include threshing separation unit, the threshing separation unit includes Threshing babinet, preceding threshing cylinder, rear threshing roller, preceding bolter, rear bolter, transition bolter, preceding threshing head cover, rear threshing Head cover and the transmission mechanism that power is provided for the preceding threshing cylinder and the rear threshing roller.The preceding threshing cylinder and The rear threshing roller accumbency separates between the two in the threshing box body, the preceding threshing cylinder and the rear threshing Handing-over mouth E is equipped between roller；The preceding bolter is located at the underface of the preceding threshing cylinder and is wrapped in the preceding threshing outside Roller；Bolter is located at the underface of the rear threshing roller and is partly wrapped in the rear threshing roller close to described preceding de- after described The leading portion of grain roller；The front side of the transition bolter is docked with the rear side of the preceding bolter, after the transition bolter Docked with the feeding mouth F of the rear bolter side；The preceding threshing head cover is installed on the preceding threshing cylinder, the rear threshing Head cover is installed on the rear threshing roller.

Threshing separation unit in the threshing cleaning unit be arranged in parallel with before and after using two nested structures are different, length is different, The different threshing system of parameter, preceding threshing system use half axial threshing principle of hemisection stream, with rubbing for chief commander paddy code rub it is broken；Afterwards Threshing system uses full axial threshing principle, further rubbing paddy code while, impact remnants not yet purify paddy code with Seed is thoroughly set to be separated from paddy code.But green stalk, blade make moist easily paste sieve on notch board when actually rubbing rolls, this Sample seed is not easy to purify.It is insufficient due to rubbing the time in single threshing cylinder, even with the common of two threshing cylinders Kneading action, because the threshing principle of each threshing cylinder is different, also fails to effectively solve above-mentioned paste sieve problem.

In addition, existing transverse-axis-flow Combined harvester concave plate uses the monoblock type notch board structure of 220 degree of -270 degree, and first Shen Notch board please（With reference to earlier application Figure of description 24,26）Using monoblock type notch board structure, wherein preceding grating and preceding steel wire structure Into notch board radian be 270 degree, rear grating is different in front and rear section from the notch board radian that rear steel wire is formed, to adapt to front and rear threshing system The threshing principle for uniting different.But monoblock type notch board structure must tear roller open when dismounting, dismounting is not convenient, and with usage time Different degrees of abrasion is presented in diverse location for longer notch board structure, then needs to change whole notch board, maintenance cost is high.

Utility model content

The utility model is in view of the problems of the existing technology, it is proposed that a kind of threshing time is long, separating area is big, reduces Paste sieve with green stalk and blade, dismount convenient, maintenance cost is low, to clean ability strong threshing cleaning unit and use the device Millet combined harvester.

The utility model technical scheme is that：

A kind of threshing cleaning unit, including threshing separation unit and grain cleaning portion, the grain cleaning portion is positioned at described de- The lower section of grain separation unit；The threshing separation unit includes threshing cylinder, the threshing cylinder head cover above threshing cylinder, is arranged on Grid concave plate below threshing cylinder；The threshing cylinder includes cylinder after closed taper placket and open type；Cylinder after the open type Including the drum shaft coaxially connected with closed taper placket, it is connected to the width disk at drum shaft both ends, is circumferentially distributed in the rolling Cylinder and is connected to multiple threshing toothed bars on width disk at axis；On part threshing toothed bar and every threshing toothed bar in multiple threshing toothed bars Equipped with a rasp bar ratch and multiple Lysimachia sikokiana teeth, and part threshing toothed bar and every threshing toothed bar are equipped with a combination ratch With multiple Lysimachia sikokiana teeth；The combination ratch is alternateed to be spaced by multiple threshing tooths and multiple arcs elastic claw to be formed；It is described Grain cleaning portion includes cleaning frame, wind turbine, the reciprocating oscillating screen with double braid net and separator ridlle；The wind turbine is arranged on institute The front upper place cleaned in frame is stated, the reciprocating oscillating screen is installed on the back upper place cleaned in frame.

The utility model threshing cleaning unit realizes threshing using the threshing toothed bar with rasp bar ratch and combination ratch, Not only kept to the paddy powerful rubbing of code and rolled ability, but have to pasting the stalk on sheller unit, blade dredge the energy of brush Power, improves seed threshing performance, reduces entrainment loss rate.Meanwhile the further sieving through too small mesh-structured grid concave plate, Empty, the lower leakage of capes code is hindered, millet combined harvester is reduced and cleans difficulty in next step.Afterwards, using wind turbine and back and forth Vibrating screen cleans seed, avoids sieve from blocking accumulation.

Preferably, the threshing toothed bar that combination ratch is equipped with multiple threshing toothed bars is symmetrically arranged, multiple threshing tooths The threshing toothed bar equipped with rasp bar ratch is symmetrically arranged in bar.

Preferably, the crown of the rasp bar tooth on the rasp bar ratch, with the Lysimachia sikokiana on the threshing toothed bar equipped with rasp bar tooth The crown of tooth is located at sustained height；The crown of the threshing tooth and the crown of rasp bar tooth be located at sustained height, and also with equipped with taking off The crown of Lysimachia sikokiana tooth on the threshing toothed bar of grain tooth is located at sustained height；The height of the arc elastic claw peak is de- higher than described The height of grain tooth crown.

Preferably, the Lysimachia sikokiana tooth on the rasp bar tooth or threshing toothed bar equipped with rasp bar tooth or the threshing equipped with threshing tooth The gap between Lysimachia sikokiana tooth or the threshing tooth and the notch board on ratch is not more than 10 millimeters.

Preferably, the gap between the arc elastic claw and the notch board is not less than 2 millimeters and no more than 5 millimeters.

Preferably, the notch board uses the symmetrical tile segmented grid concave plate of 180 degree.

Preferably, pitch-row is not less than 6 millimeters and no more than 8 millimeters between the notch board.

Preferably, the notch board includes the grating along notch board radian direction arrangement and the horizontal stroke along concave length direction arrangement Bar；The distance d that the horizontal stripe is higher by the grating is not less than 6 millimeters and no more than 7 millimeters.

Preferably, the arc convex portion direction on the arc elastic claw is consistent with the rotating direction of threshing cylinder.

Preferably, the threshing tooth and the Lysimachia sikokiana tooth are finger-like tooth.

Preferably, the wind turbine is arc plate scroll centrifugal fan.

Preferably, the arc plate number of the wind turbine is not less than 4 width and is not more than 8 width.

Preferably, the air inlet is provided with the air door plate of adjusting air inlet amount.

Preferably, the reciprocating oscillating screen include screen frame, screen frame soldering member, upper wire gauze sieve, lower wire gauze sieve, by original text plate； The screen frame soldering member is installed on the top of the screen frame after being combined with the upper wire gauze sieve；Lower wire gauze sieve is arranged on the screen frame Lower part；Described to be arranged on the screen frame Internal back end by original text plate, its top is higher by the back side panel of screen frame afterbody.

Preferably, the mesh center specification of the upper wire gauze sieve is 10 millimeters × 10 millimeters -12 millimeters × 12 millimeters； And/or the mesh center specification of the lower wire gauze sieve is 6 millimeters × 6 millimeters -8 millimeters × 8 millimeters.

A kind of millet combined harvester with above-mentioned threshing cleaning unit.

The utility model has the advantages that：

A kind of threshing cleaning unit of the utility model and the millet combined harvester with the device, it is simple in structure, it is easy to Dismount, fully rub, be not easy paste sieve, prevent capes code more than whole paddy code and half from falling into cleaning for combined harvester Portion, utilizes the straight panel spiral case centrifugation extension set collocation double braid sieve with door regulating plate and the reciprocating oscillating screen by original text harden structure Make the ability of cleaning stronger, percentage of impurity is lower.

Brief description of the drawings

Fig. 1 is a kind of profile of threshing cleaning unit of the utility model；

Fig. 2 is the axial sectional view of detachment roller in a kind of threshing cleaning unit of the utility model；

Fig. 3 is the shaft side figure of threshing cylinder in threshing separation unit in a kind of threshing cleaning unit of the utility model；

Fig. 4 a are the enlarged drawing of A in Fig. 3；

Fig. 4 b are the enlarged drawing of B in Fig. 3；

Fig. 5 is the exploded view of notch board in threshing separation unit in a kind of threshing cleaning unit of the utility model；

Fig. 6 pitch-row schematic diagrames between notch board in threshing separation unit in a kind of threshing cleaning unit of the utility model；

Fig. 7 be in a kind of threshing cleaning unit of the utility model in threshing separation unit notch board intrados and threshing tooth apex distance from Schematic diagram；

Fig. 8 is grain cleaning portion inner blower and housing shaft side figure in a kind of threshing cleaning unit of the utility model；

Fig. 9 is the axial sectional view of grain cleaning portion inner blower in a kind of threshing cleaning unit of the utility model；

Figure 10 a are the isometric side of compass screen surface on reciprocating oscillating screen in grain cleaning portion in a kind of threshing cleaning unit of the utility model View；

Figure 10 b are the isometric side of compass screen surface under reciprocating oscillating screen in grain cleaning portion in a kind of threshing cleaning unit of the utility model View.

Embodiment

It is specific embodiment of the utility model and with reference to attached drawing below, the technical solution of the utility model is made further Description, but the utility model is not limited to these embodiments.

Since millet belongs to small crop, relative to wheat, rice, corn, quality grain is small, and mass of 1000 kernel only has 2.4-3.5g, And having bar stem among grain ear, it produces level-one branch above, produces two level branch, three-level branch again in level-one branch, often Level-one branch is a small code, there is many seeds, some up to two or three hundred, according to traditional full-feeding combine harvester above Sheller unit certain modification into paddy code and stalk during threshing, can be caused to be not readily separated, seed is not easy to purify, it is big damage, carries secretly The significant deficiencies such as cleaning loss percentage height.There are the characteristics of stalk band is green ripe, moisture is big, threshing during along with summer millet maturation Cheng Zhong, together with stalk, blade, capes code are adhered with seed, separation is difficult.If notch board structure, with crown distance design do not conform to Suitable, not only threshing performance reduces, and will also produce a large amount of capes codes increases into cleaning and sorting system and clean difficulty.In addition, millet and rice Equally, outer layer has one layer of shell, according to strength threshing, it is easy to and it is hit in threshing course and is broken into millet, percentage of damage Height is that seed easy damaged is also a very intractable thing.Not only storage is easily gone mouldy, if being harvested for seed, is emerged Rate, germination percentage can be greatly affected.

First patent of invention ZL2015105537826 " a kind of millet combined harvester and its threshing cleaning unit and threshing Cleaning and sorting system " fails to overcome the above problem.The invention uses the rear threshing of preceding threshing cylinder and the holoaxial stream of hemisection stream semiaxis stream Roller, can to a certain degree by paddy code rub it is broken, but can not avoid paste sieve.In addition, formerly patent of invention is using non-holoaxial stream The threshing portion that two threshing cylinders are formed, its hitting power are weaker than the millet harvest-seed extraction roller for single longitudinal axial flow；Two threshings Effective threshing stroke that roller adds up falls short of.The notch board of first patent of invention is monoblock type, not easy to assemble.

The wind turbine in cleaning plant that first patent of invention uses is that adjustable input belt wheel is equipped with its fan shaft, is passed through Input pulley diameters have level to transfer to adjust the wind speed of centrifugation extension set.Although adjust the thickness adjustment sheet on input belt wheel or adjusting Gasket carrys out regulating wheel classification and realizes that change rotating speed adapts to wind speed needed for Different Crop, further avoid cleaning it is improper and caused by Sieve blocks accumulation problem.But for the millet combined harvester of single longitudinally axial flow threshing mode, it is both fan shaft and rotating speed Constant final drive shaft, the dependence mentioned by first patent of invention changes rotating speed can not use to improve the blower fan structure of wind speed.

For this reason, the utility model provides a kind of threshing cleaning unit and the millet combined harvester with the device.Fig. 1 shows A kind of profile of threshing cleaning unit of the utility model is gone out.The threshing cleaning unit includes threshing separation unit 200 and cereal Clean portion 300.The grain cleaning portion 300 is located at the lower section of the threshing separation unit 200.

Fig. 2 shows the sectional view of threshing separation unit in a kind of threshing cleaning unit of the utility model.The threshing separation unit Threshing cylinder head cover including threshing cylinder 100, above threshing cylinder 100（Not shown in figure）, arranged on threshing cylinder 100 The grid concave plate 5 of lower section.The threshing cylinder 100 includes cylinder 20 after closed taper placket 10 and open type.The roller is as big Diameter overlength roller is used for single longitudinally axial flow threshing, and not less than 600 millimeters and no more than 650 millimeters, it is rolled the diameter of the roller Cylinder size is 650 × 2000mm of φ 600 × 2000mm- φ.And the preceding threshing cylinder and rear threshing roller of first patent of invention A diameter of 540 millimeters, and preceding threshing cylinder size is 540 × 600mm of φ, rear threshing roller size is 540 × 1200mm of φ.Can See, the utility model substantially prolongs threshing time, increase separating area, and it is small to overcome single longitudinal axial flow ratch roller kneading force Problem, while the big advantage of single longitudinal axial flow ratch roller hitting power is employed, and better than formerly hair in threshing timeliness and area Bright patent, further increases millet and purifies efficiency.

The threshing cylinder head cover by centered on axle center the grand cowl top panel swelled upwards of the whole roller of rotating covering, And it is welded on the guiding work with cylinder axis into certain degree for two arranged in parallel that grand cowl top panel Right Inboard extends downwardly Thing leads careless muscle by what movement was spinned in regulation track.Crop is spinned fortune backward after entering roller in the case where head cover leads the guiding of careless muscle Dynamic, roller least significant end also extends to the rearmost end of millet cropper for Lysimachia sikokiana end, and Lysimachia sikokiana uses nature falling type.

Fig. 3 shows the structure chart of threshing cylinder.

The closed taper placket 10 is arranged on the front end of the millet harvest-seed extraction roller, it carries 2 or 3 helical-blades The closed conically shaped of piece.

Cylinder 20 includes drum shaft 201, width disk 202, multiple threshing toothed bars after the open type.The drum shaft and the closing Formula taper placket 10 is coaxially connected, when millet harvest-seed extraction roller rotates, the closed taper placket 10 and cylinder 20 after open type Rotate coaxially.Cylinder 20 is cylindrical open type roller after the open type, and visible 201 or so the directions of drum shaft of Fig. 2 are arranged in Cylinder 20 after the open type, 202 key connection of width disk is in 201 both sides of drum shaft, and multiple threshing toothed bar axis are in the roller The circumferential direction of axis 201 is uniformly distributed and is connected on the width disk 202.

Multiple threshing toothed bars have the threshing toothed bar of two kinds of different structures, are set on each rooted tooth bar of which part threshing toothed bar There are a rasp bar ratch 1 and multiple Lysimachia sikokiana teeth 4, the rasp bar ratch 1 is secured by bolts in the leading portion of the threshing toothed bar, is Improve rubbing and roll dynamics, paddy code is rubbed from stem stalk and take off and seed is separated from paddy code, it is described The length of rasp bar ratch 1 is at least 2/3rds of the threshing toothed bar length.In the threshing toothed bar back segment where rasp bar ratch For Lysimachia sikokiana section, which is equipped with multiple Lysimachia sikokiana teeth 4, and 4 arranged at equal intervals of Lysimachia sikokiana tooth are consolidated on threshing toothed bar with welding manner It is fixed.Wherein, the threshing toothed bar body equipped with rasp bar ratch 1 is won in succession by ratch, the downward projection of ratch in ratch both sides, projected upwards Support base form.

Each rooted tooth bar of which part threshing toothed bar is equipped with a combination ratch and multiple Lysimachia sikokiana teeth 4.The combination Ratch is alternateed to be spaced and formed by multiple threshing tooths 3 and multiple arcs elastic claw 2.It is described combination ratch threshing tooth 3 with 2 Combination Welding of arc elastic claw is in the leading portion of threshing toothed bar, in order to go paste to sieve in impact, since arc elastic claw 2 is higher than threshing tooth 5 ~ 7mm, the small―gap suture of itself and notch board are easier that short stem, the broken blade pasted in notch board inner surface are dredged and cleaned down.In combination ratch The threshing toothed bar back segment at place is Lysimachia sikokiana section, which is equipped with multiple Lysimachia sikokiana teeth 4, and 4 arranged at equal intervals of Lysimachia sikokiana tooth are in threshing On ratch, fixed with welding manner.Wherein, the threshing toothed bar body equipped with combination ratch is downwardly projected by ratch, ratch both sides Ratch win in succession, the support base that projects upwards is formed.

There are 6 for damage of the reduction to millet and in view of the substantially anhydrous rice in millet planting area, preferably above-mentioned threshing toothed bar, Wherein 4 threshing toothed bars and every threshing toothed bar are equipped with a rasp bar ratch and multiple Lysimachia sikokiana teeth, 2 threshing toothed bars and every Threshing toothed bar is equipped with a combination ratch and multiple Lysimachia sikokiana teeth.Wherein, 2 threshing toothed bars with combination ratch are symmetrical Set, 4 threshing toothed bars with rasp bar ratch are also symmetrically set, the injustice brought with eliminating threshing cylinder to run at high speed It is evenly effective when weighing apparatus and threshing.

The utility model threshing cylinder uses rasp bar ratch based on rubbing and roll in threshing section, by paddy code from stem leaf On rub and take off and seed is separated from paddy code, and use its curved wire bullet of combination ratch side impact lateral dominance Short stem, the broken blade pasted in notch board inner surface are dredged and cleaned down by tooth.Specifically, the tooth of the rasp bar tooth on the rasp bar ratch 1 The crown of Lysimachia sikokiana tooth 4 on point, with the threshing toothed bar equipped with rasp bar tooth is located at sustained height,；The crown and line of the threshing tooth 3 The crown of bar tooth is located at sustained height, and the crown also with the Lysimachia sikokiana tooth 4 on the threshing toothed bar equipped with threshing tooth 3 is located at same height Degree；The height of 2 peak of arc elastic claw is higher than the height of 3 crown of threshing tooth.So oneself and threshing tooth of arc elastic claw 2 Bar junction, which is risen, to stretch out, and it be in bending that it, which extends free end, and similar broom is by green stalk of the paste on notch board inner surface, leaf Piece cleans out.Such as Fig. 4 a, 4b, the difference in height of the height of 2 peak of arc elastic claw and 3 crown of threshing tooth is not small In 5 millimeters and no more than 7 millimeters, paste sieve thing so can be effectively cleared away.Wherein, to prevent roller from blocking, the arc on arc elastic claw 2 Shape lug boss direction is consistent with the rotating direction of threshing cylinder.The threshing tooth 3 is finger-like tooth, to rub, impact paddy code.

The utility model threshing cylinder is equipped with Lysimachia sikokiana tooth in Lysimachia sikokiana section, i.e., the end of every threshing toothed bar.The Lysimachia sikokiana tooth Width installation is equal with the straw outlet width in grain threshing portion.The Lysimachia sikokiana tooth is finger-like tooth, although hitting some for a long time Rubbing and impact but the remaining paddy code not purified yet, and make half ripe therein or immature remaining seed is completely separated out At the same time by outside the long stalk purified, the empty quick discharge machine of paddy code.

Grid concave plate 5 is equipped with below millet harvest-seed extraction roller, the grid concave plate 5 uses three sections of 180 degree cornerite Six tile shape grid screens（Referring to the drawings 5）, symmetrical grid screen fixed by positioning pin 51 and location hole 52, so can be not In the case of tearing roller open, notch board is dismounted.The grid concave plate 5 is all using close gap, specifically, on the notch board between grid Pitch-row is equal, and the paddy code and half paddy code to prevent to take off in threshing course leak down from sieve aperture, and a pitch-row d is not less than 6 millis Rice and no more than 8 millimeters, so only need to change when the situation of serious wear occurs in notch board part it is one of, can also Less one piece will be worn on notch board and is replaced and wears larger one piece, maintenance cost is greatly reduced, improves dismounting convenience.

Such as Fig. 6, the notch board includes the grating 54 along notch board radian direction arrangement and the horizontal stroke along concave length direction arrangement Bar 53.To make in threshing course notch board 5 be not easy paste sieve, the distance b that its horizontal stripe 53 is higher by grating 54 be arranged to not less than 6 millimeters and No more than 7 millimeters.

Such as Fig. 7, sieved in order to avoid pasting in the gap of notch board 5, threshing toothed bar and notch board, the tooth of tooth especially on threshing toothed bar The distance of point and notch board intrados limits within the specific limits.Specifically, the rasp bar tooth or the threshing tooth equipped with rasp bar tooth Between 4 or described threshing tooth 3 of Lysimachia sikokiana tooth and the notch board 5 on Lysimachia sikokiana tooth 4 on bar or the threshing toothed bar equipped with threshing tooth 3 Gap a is not more than 10 millimeters.Further, the gap between the arc elastic claw and the notch board is not less than 1 millimeter and little In 3 millimeters.

Such as Fig. 8,9,10a, 10b, the grain cleaning portion includes cleaning frame 301, wind turbine 302, having double braid net With the reciprocating oscillating screen 303 of separator ridlle.The wind turbine 302 is arranged on the front upper place cleaned in frame 301, described of reciprocating vibration Sieve 303 is installed on the back upper place cleaned in frame 301.

The wind turbine is arc plate scroll centrifugal fan, including volute of blower 31, wind turbine belt wheel 32, air-flow plate 33, arc Shape blade 34.The arc-shaped leaf the piece number of the wind turbine is not less than 4 width and is not more than 8 width.To make air quantity, wind speed evenly and reliability More preferably, the arc shaped blade of preferably above-mentioned wind turbine is secondary for 6.For adaptation great diameter and long roller list longitudinally axial flow threshing mode and as far as possible Short cleaning system, the final drive shaft of the fan shaft and millet combined harvester are arranged to same axis.The arc shaped blade 34 are arranged on final drive shaft.The volute of blower 31 covers at 34 side of arc shaped blade, and the air-flow plate 33 is arranged on described Volute of blower 31 installs the side of wind turbine belt wheel 32, mainly adjusts daughter board by the air quantity of both adjustable folding angles of two pieces of connections Form, for control intake number.Because millet seed is very light, seed and paddy third and the selection by winnowing critical speed phase of short stem Closely.If air quantity conference makes grain blow out and cause to waste, air quantity is small and sieve is blocked accumulation, passes through the big ditty of air door folding The adjusting of air force can be achieved in section.

The reciprocating oscillating screen include screen frame 41, screen frame soldering member 42, upper wire gauze sieve 43, lower wire gauze sieve 44, by original text plate 45. The top of screen frame 41 is bolted on after the screen frame soldering member 42 and the upper wire gauze sieve 43 combination, lower wire gauze sieve 44 is logical Cross bolt and be fixed on 41 lower part of screen frame, 41 Internal back end of screen frame is arranged on by original text plate 45, after its top is higher by 41 afterbody of screen frame Side plate 41a.The front upper place by original text plate 45 is further fixed on width and retreats with by original text plate 45, height 30 millimeters -50 millimeters Oblique baffle 451.Sieve is short on the reciprocating oscillating screen, easy to leak out the paddy for by original text plate 45, making not yet to purify code enter it is auxiliary Help the portion of cleaning again threshing secondary rethreshing device carry out threshing, to reduce cleaning loss.

To prevent paddy code shell from leaking down, the 43 mesh center specification of upper wire gauze sieve of the reciprocating oscillating screen is 10 millimeters × 10 millis - 12 millimeters × 12 millimeters of rice.To prevent capes code shell from leaking down to reduce percentage of impurity, the mesh center specification of lower wire gauze sieve 44 is 6 Millimeter × 6 millimeters -8 millimeters × 8 millimeters.

When plant is transported to threshing cylinder, rasp bar rubbing on roller, roll, and the paddy code on grain ear falls big portion by stranding Point, and spin be moved into roller stage casing backward entrainment of the mixture of paddy code, grain ear, stalk, in the continuation of roller rasp bar Under kneading action, paddy on grain ear code is completely fallen off, and more than 95% seed also comes off separation from paddy code, when continuation is transported backward During dynamic arrival roller latter end, the remaining paddy code not purified yet then is continued to impact and is completely fallen off by ratch rear end finger-like tooth. In whole threshing course, long stalk, big miscellaneous leaf, drop down onto ground under being thrown without grain paddy code and part capes code from drum outlet end Face, and seed and the capes code without grain can be fallen on following vibrating screen from the grid gap of notch board.Fall into vibrating screen surface On seed, light miscellaneous, capes code, classification can be handled under shaker vibration and the collective effect of wind-force, seed pass through two layer screen Net enters collection grain conveying auger, light miscellaneous and be blown machine without seed capes code, and the heavier capes also containing remaining seed Code can then fall into secondary rethreshing device from vibrating sieve tail, be sent into vibrating screen surface again by the auger in rethreshing device, repeat Once cleaned, so as to complete once complete grain threshing process.

The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute Described specific embodiment can be done various modifications or additions or using similar by belonging to those skilled in the art Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.

Claims (14)

1. a kind of threshing cleaning unit, including threshing separation unit and grain cleaning portion, the grain cleaning portion is located at the threshing The lower section of separation unit；It is characterized in that, the threshing separation unit includes threshing cylinder, the threshing cylinder above threshing cylinder Head cover, the grid concave plate below threshing cylinder；The threshing cylinder includes cylinder after closed taper placket and open type；It is described Cylinder includes the drum shaft coaxially connected with closed taper placket, the width disk for being connected to drum shaft both ends, is circumferentially evenly distributed with after open type In the drum shaft and it is connected to multiple threshing toothed bars on width disk；Part threshing toothed bar in multiple threshing toothed bars and every it is de- Grain ratch is equipped with a rasp bar ratch and multiple Lysimachia sikokiana teeth, and part threshing toothed bar and every threshing toothed bar are equipped with one Combine ratch and multiple Lysimachia sikokiana teeth；The combination ratch is alternateed by multiple threshing tooths and multiple arcs elastic claw and is spaced structure Into；The grain cleaning portion includes cleaning frame, wind turbine, the reciprocating oscillating screen with double braid net and separator ridlle；The wind Machine is arranged on the front upper place cleaned in frame, and the reciprocating oscillating screen is installed on the back upper place cleaned in frame.

2. a kind of threshing cleaning unit according to claim 1, it is characterised in that combination tooth is equipped with multiple threshing toothed bars The threshing toothed bar of bar symmetrically arranges that the threshing toothed bar equipped with rasp bar ratch is symmetrically arranged in multiple threshing toothed bars.

3. a kind of threshing cleaning unit according to claim 1, it is characterised in that rasp bar tooth on the rasp bar ratch The crown of Lysimachia sikokiana tooth on crown, with the threshing toothed bar equipped with rasp bar tooth is located at sustained height；The crown and line of the threshing tooth The crown of bar tooth is located at sustained height, and the crown also with the Lysimachia sikokiana tooth on the threshing toothed bar equipped with threshing tooth is located at same height Degree；The height of the arc elastic claw peak is higher than the height of the threshing tooth crown.

A kind of 4. threshing cleaning unit according to claim 2, it is characterised in that the rasp bar tooth or equipped with rasp bar tooth Between Lysimachia sikokiana tooth on threshing toothed bar or the Lysimachia sikokiana tooth on the threshing toothed bar equipped with threshing tooth or the threshing tooth and the notch board Gap be not more than 10 millimeters.

A kind of 5. threshing cleaning unit according to claim 3, it is characterised in that the arc elastic claw and the notch board it Between gap be not less than 2 millimeters and no more than 5 millimeters.

6. a kind of threshing cleaning unit according to claim 1, it is characterised in that the notch board uses symmetrical watt of 180 degree Piece segmented grid concave plate.

7. a kind of threshing cleaning unit according to claim 1, it is characterised in that pitch-row is not less than 6 between the notch board Millimeter and no more than 8 millimeters.

8. a kind of threshing cleaning unit according to claim 1 or 6, it is characterised in that the notch board is included along notch board arc The horizontal stripe spent the grating of direction arrangement and arranged along concave length direction；The distance d that the horizontal stripe is higher by the grating is not small In 6 millimeters and no more than 7 millimeters.

A kind of 9. threshing cleaning unit according to claim 1, it is characterised in that the arc convex on the arc elastic claw Portion's direction is consistent with the rotating direction of threshing cylinder.

10. a kind of threshing cleaning unit according to claim 1, it is characterised in that the threshing tooth and the Lysimachia sikokiana tooth It is finger-like tooth.

11. a kind of threshing cleaning unit according to claim 1, it is characterised in that the wind turbine centrifuges for arc plate volute Wind turbine.

A kind of 12. threshing cleaning unit according to claim 1, it is characterised in that the reciprocating oscillating screen include screen frame, Screen frame soldering member, upper wire gauze sieve, lower wire gauze sieve, by original text plate；The screen frame soldering member is installed on after being combined with the upper wire gauze sieve The top of the screen frame；Lower wire gauze sieve is arranged on the lower part of the screen frame；It is described to be arranged on the screen frame Internal back end by original text plate, Its top is higher by the back side panel of screen frame afterbody.

A kind of 13. threshing cleaning unit according to claim 12, it is characterised in that the mesh center of the upper wire gauze sieve Specification is 10 millimeters × 10 millimeters -12 millimeters × 12 millimeters；And/or the mesh center specification of the lower wire gauze sieve is 6 millimeters × 6 - 8 millimeters × 8 millimeters of millimeter.

A kind of 14. millet combined harvester with one of the claims 1-13 threshing cleaning unit.