CN207754135U - A kind of flexible threshing roller and maize sheller - Google Patents

Abstract

The utility model discloses a kind of flexible threshing rollers, are made of mandrel, set axis and elastic shaft.Mandrel is fixed in the set axis, and set axis is fixed in the elastic shaft.The flexible threshing roller uses multilayered structure, the mandrel of internal layer that can keep the integral strength of grain threshing roller, avoid being bent when work.Intermediate set axis is prismatic structure, and protruding portion stretches into elastic shaft.The threshing tooth that elastic shaft adopts outside can periodically slough niblet.Due to being guaranteed for the protruding portion of rigidity, the integral strength of grain threshing roller inside threshing tooth.When grain threshing roller rotates, protruding portion provides tangential impact force, ensures that niblet is cut.The invention also discloses a kind of maize shellers.

Description

A kind of flexible threshing roller and maize sheller

Technical field

The utility model is related to a kind of flexible threshing roller, it is de- that the utility model further relates to the corn with the flexible threshing roller Grain machine.

Background technology

《The design of corn combine longitudinal axial flow threshing device and control system》（School of Mechanical Engineering of University Of Ji'nan, Open a kind of jade etc.）A kind of longitudinal axial flow threshing device is devised, with single grain threshing roller, patterns under short and threshing are set on the outside of grain threshing roller Pawl.The layout of grain threshing roller is simple, and threshing efficiency is low, can not adapt to various sizes of corn ear.

《Reducing becomes the design of spacing spiral lamina dentition formula maize sheller and experiment》（Xibei Univ. of Agricultural ＆ Forest Science ＆ Technology's machinery and electronics Engineering college, Zhao Wuyun etc.）It is intended to the threshing difficulty in the niblet in different threshing stages and breakage rate amendment according to corn ear The cutter tooth form at each position of grain threshing roller.Such as from threshing machine inlet to core discharging outlet direction, the coronal tooth that is distributed on sheller unit Spacing increases, and tablet space width reduces, and the diameter of coronal tooth and tablet tooth has increase.

《The exploitation of flexible corn thresing machine》（Changchun agricultural machinery research institute, Wang Shulan etc.）It is proposed the design of flexible threshing machine Thinking.Its main shaft drives threshing helical teeth, the rotation of threshing straight-tooth to rub the de- stick threshing of corn with the hands to squeeze by threshing tooth support plate and driven shaft. During threshing, when threshing tooth is by high resistance, driven shaft can be made to rotate.Threshing tooth is avoided to be obstructed generation Excessive impact force keeps niblet and corn ear pulverized.The basic ideas of flexible threshing principle are to provide the active force of elasticity, Avoid unexpected increased active force damage corn.

Utility model content

The utility model proposes a kind of flexible threshing rollers, adopt multilayer threshing roll structure, and grain threshing roller is kept to rush corn Power is hit, while avoiding cutter tooth incision is too deep from pulverizing corn ear.The utility model also proposed a kind of with the flexible threshing roller Maize sheller.

What the technical solution of the utility model was realized in：

A kind of flexible threshing roller, which is characterized in that be made of mandrel, set axis and elastic shaft, the mandrel is fixed on this It covers in axis, the set axis is fixed in the elastic shaft, wherein the set axis includes multiple protruding portion and for connecting the protruding portion Arcwall composition, the lateral wall of the mandrel is fitted on the inside of the arcwall, and the inside of the elastic shaft has at least one Recessed groove, for the protruding parts in the recessed groove, the outside of the elastic shaft has multiple threshing tooths, at least one threshing Tooth position is located at the outside of the arcwall in the outside of the protruding portion, at least one threshing tooth.

In this flexible threshing roller of the utility model, the threshing tooth is justified by the protrusion circular arc and recess being connected with each other Arc forms, and the center of curvature of the protrusion circular arc is located at the inside of the elastic shaft, and the center of curvature of the recess circular arc is positioned at described The outside of elastic shaft.

In this flexible threshing roller of the utility model, which intersects composition with the lateral surface of the elastic shaft One obtuse angle, it is in an acute angle which with the lateral surface of the elastic shaft intersects structure.

In this flexible threshing roller of the utility model, the mandrel and/or set axis are by carbon structural steels or No. 45 steel It is made.

In this flexible threshing roller of the utility model, the elastic shaft is made of isoprene rubber and/or neoprene.

A kind of maize sheller, is at least made of holder and thresher, the thresher include threshing motor, feeding roller, The flexible threshing roller, the threshing motor are fixed on the stent outer, which is connected to a transmission shaft repeatedly, should Transmission shaft connects the grain threshing roller and/or feeding roller through a gear set.

In this maize sheller of the utility model, which further includes soft readjustment component, the soft readjustment Component includes crossbeam, connecting rod, the first swing arm, the second swing arm and adjustment spring, the middle part of first swing arm and the second swing arm It is hinged on the crossbeam, the upper end of first swing arm is hinged to the grain threshing roller of one of them, first swing arm Lower end is sleeved on the connecting rod, and the upper end of second swing arm is hinged to the adjacent grain threshing roller, under second swing arm End is hinged on the connecting rod, and the adjustment spring is sleeved on the connecting rod, and the both ends of the adjustment spring are pressed respectively against described The lower end of one swing arm and the second swing arm.

In this maize sheller of the utility model, the outside of the connecting rod is equipped with and sleeve, which is sleeved on institute State the outside of adjustment spring.

This flexible threshing roller and maize sheller for implementing the utility model, have the advantages that：The flexibility Grain threshing roller uses multilayered structure, the mandrel of internal layer that can keep the integral strength of grain threshing roller, avoid being bent when work.Intermediate set axis For prismatic structure, protruding portion stretches into elastic shaft.The threshing tooth that elastic shaft adopts outside can periodically slough niblet.Due to It is the protruding portion of rigidity inside threshing tooth, the integral strength of grain threshing roller is guaranteed, and when grain threshing roller rotates, protruding portion carries For tangential impact force, ensure that niblet is cut.Elastic shaft is made of rubber, threshing tooth be obstructed generate it is excessive when, threshing Partial deformation can occur for land mouth, and impact force is avoided to keep niblet and corn ear pulverized.

Description of the drawings

Fig. 1 is the schematic diagram of the flexible threshing roller of the utility model；

Fig. 2 is the schematic diagram of the utility model maize sheller；

Fig. 3 is a kind of sectional view of Fig. 2；

Fig. 4 is another partial sectional view of Fig. 2；

Fig. 5 is the partial view of Fig. 4, the main presentation part-structure of eccentric swage；

Fig. 6 is the schematic diagram of the other direction of Fig. 5；

Fig. 7 is the schematic diagram of the other direction of Fig. 4；

Fig. 8 is the partial view of the feeder of Fig. 2；

Fig. 9 is the schematic diagram of the other direction of Fig. 8；

Figure 10 is the schematic diagram of the feeding roller of Fig. 2.

Specific implementation mode

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe.

The relevant prior art state of feeder：《Corn ear feeds the relationship research of form and seed damage rate》（River Southern University of Science and Technology's vehicle and Power Engineering School, Lee's heart equality）Have studied the different influences to breakage rate of feed direction.But it should Feed direction only includes two kinds of approach axis of corn ear, does not include the posture of corn ear itself.201210231110.X That maize sheller, threshing cylinder top are equipped with corn and feed component, fed between component and threshing cylinder in corn It is additionally provided with the locating part for limiting corncob position in threshing course.Corn when locating part can control hand fed State.But if the very low positive feed of the rate of feeding of the device or quick feeding, locating part are difficult to play a role. 201521053912.1 disclose a kind of maize sheller feeding regulating device, are longitudinally rotated in feeding hopper and are connected with 2 controls Axis processed, two control shaft corresponding surfaces are connected with driving lever, and control outer end is connected with crank.Crank can control corn along two different sides To into thresing machine.But the case is still unable to control direction when corn ear enters thresing machine.That of 2016106865061 Maize sheller uses the structure of machinist's fast blanking.It generally comprises feed box, threshing chamber and the first rotary shaft, and first Rotary shaft is between feed box and threshing chamber.First rotary shaft is equipped with baffle.In quick feeding procedure, baffle is periodical Spout is blocked, uneven feeding is avoided to cause equipment impaired.The case can control rate of feeding, be unable to control feed direction. 201610228854.4 be a kind of shearing maize sheller of axial direction, it include feed bin, rolling plate, surge bunker, pedestal, impeller feed Glassware.It uses the means of transportation of rolling that corn ear is stacked in order, and by rotary feeder by stacking sequence on the offensive It is conveyed into threshing in order in maize sheller device.The device can not effectively control the direction of corn ear, between feeding blade Whether one and only one corn ear is also the case yet unresolved issue.Corn Seeds in threshing course it is broken mainly with punching Hit that power is related, threshing efficiency can be improved in the impact force of suitable size, but larger impact force may increase breakage.The work of impact force Percentage of damage is influenced with position.Since threshing is shaft shape structure, when corn ear is arranged in parallel with grain threshing roller, Threshing is best. When corn ear is arranged vertically with grain threshing roller, Threshing is worst.

The relevant prior art state of eccentric swage：201510938130.4 that maize sheller with eccentric swage, tool There is a binder axis.Active binder axis nested encryptions have an active nip rolls, the active binder roll on be equipped be uniformly arranged it is convex Block.Corn ear is persistently suppressed in the rolling of active binder in rotation process, is kept corn ear to be tightly fitted in and is detached from roller.But if When the cause not of uniform size of corn ear, corn ear may be damaged since press power is excessive or press power is too small makees without practical With.200910263459.X discloses another maize sheller with eccentric swage, is mainly made of sheller unit.Sheller unit It is made of thrashing cylinder, pressing plate and baffle.Pressing plate is located at arc-shaped above thrashing cylinder, and baffle is located at the side of thrashing cylinder and pressing plate. Arc threshing bin is formed between thrashing cylinder, pressing plate and baffle.Pressing plate is made of pressing plate, pressure pipe, press strip, compression spring, the top of pressing plate It is provided with elastic device.The case solves the different corn ear of big spillikin diameter by height-adjustable elastic press-plate and feeds And the problem of threshing.The pressure of pressing plate is controlled by corn ear, can not active period adjusting corn stick and be detached from roller contact Pressure and contact position.

The relevant prior art state of feeding roller of thresher：The structure of existing threshing roller group can refer to 201510234368.9 described in the maize sheller waited.Grain threshing roller group configures helix, or it includes an independent band spiral shells The feeding roller of spin line.The helix is at least used to that corn ear to be driven to rotate and move forward.201410176378.7 that is reversible The maize sheller of threshing illustrates a kind of variable threshing muscle（Helix）Thrashing cylinder.Threshing muscle includes epimere threshing muscle under Section threshing muscle, epimere threshing muscle and the hypomere threshing muscle hand of spiral are opposite.Change threshing bin by way of changing double-layer rib Highly, realize that corn ear can obtain abundant threshing in the different spaces part of threshing bin.The threshing of this variable helical line Machine roller group can be used as the reference of the application.《The single factor analysis of corn seed differential threshing》（University Of Science and Technology Of He'nan's vehicle with it is dynamic Power engineering college, Lee's heart equality）Analyze influence of the various factors to differential sheller unit efficiency.Wherein, the increasing of straight roller rotating speed Add it is advantageous to non-threshing performance in a certain range, the increase of the straight roller rotating speed of corn while and seed damage rate increases.The increasing of feed quantity Adding can make Threshing be deteriorated, and non-threshing performance increases.《The development of single roller spiketooth type maize sheller》（Qiqihar University's machine Electrical engineering institute, Wang Fengjuan etc.）And《The structure design of small-sized corn thresher high speed rotor and finite element analysis》（Qingdao section Skill university Electrical and Mechanical Engineering College, Wu Junfei etc.）Deng design threshing apparatus critical component key dimension, and from optimization roller, spike-tooth Deng size start with improve thresher structure.The case can be included in the application as reference.

The relevant prior art state of grain threshing roller of thresher：《Corn combine longitudinal axial flow threshing device and control The design of system》（School of Mechanical Engineering of University Of Ji'nan, a kind of jade etc.）A kind of longitudinal axial flow threshing device is devised, with single Grain threshing roller, grain threshing roller outside setting patterns under short and threshing pawl.The layout of grain threshing roller is simple, and threshing efficiency is low, can not adapt to difference The corn ear of size.《Reducing becomes the design of spacing spiral lamina dentition formula maize sheller and experiment》（Xibei Univ. of Agricultural ＆ Forest Science ＆ Technology's machinery With Institute Of Electrical Engineering, Zhao Wuyun etc.）It is intended to the threshing difficulty in the niblet in different threshing stages and breakage according to corn ear Rate corrects the cutter tooth form at each position of grain threshing roller.Such as from threshing machine inlet to core discharging outlet direction, it is distributed on sheller unit Coronal space width increases, and tablet space width reduces, and the diameter of coronal tooth and tablet tooth has increase.《Flexible corn thresing machine Exploitation》（Changchun agricultural machinery research institute, Wang Shulan etc.）It is proposed the mentality of designing of flexible threshing machine.Its main shaft passes through threshing tooth support plate Threshing helical teeth, the rotation of threshing straight-tooth is driven to rub the de- stick threshing of corn with the hands to squeeze with driven shaft.During threshing, work as threshing tooth When by high resistance, driven shaft can be made to rotate.It avoids threshing tooth from being obstructed to generate excessive impact force and make niblet and jade Rice stick is pulverized.The basic ideas of flexible threshing principle are to provide the active force of elasticity, avoid unexpected increased active force damage Corn.

Such as Fig. 1, the flexible threshing roller 330 of the utility model is made of mandrel 331, set axis 332 and elastic shaft 333.Core Axis 331 is fixed in the set axis 332, and the set axis 332 is fixed in the elastic shaft 333.The flexible threshing roller 330 uses multilayer Structure, the mandrel 331 of internal layer can keep the integral strength of grain threshing roller 330, avoid being bent when work.It includes multiple prominent to cover axis 332 Go out portion 334 and the arcwall 335 for connecting the protruding portion 334 forms.Intermediate set axis 332 is prismatic structure, protruding portion 334 stretch into elastic shaft 333.The lateral wall of mandrel 331 is fitted in 335 inside of arcwall, and the inside of elastic shaft 333 is with multiple Recessed groove 336, protruding portion 334 are located in the recessed groove 336, and the outside of the elastic shaft 333 has multiple threshing tooths 337.Due to 337 inside of threshing tooth is rigid protruding portion 334, and the integral strength of grain threshing roller 330 is guaranteed.When grain threshing roller 330 rotates, Protruding portion 334 provides tangential impact force, ensures that niblet is cut.In the present invention, mandrel 331 and set axis 332 by Carbon structural steels or No. 45 steel are made.Elastic shaft 333 is made of isoprene rubber and/or neoprene.Elastic shaft 333 uses rubber Be made, threshing tooth 337 be obstructed generate it is excessive when, partial deformation can occur for 337 cutting edge of threshing tooth, avoid impact force make niblet and Corn ear 600 is pulverized.

Part threshing tooth 337 is located at the outside of protruding portion 334, the part threshing tooth 337 by rigid tab 334 branch The effect of holding, intensity higher, is conducive to threshing.Part threshing tooth 337 is located at the outside of arcwall 335, this part threshing tooth 337 can Certain deformation is born, niblet is avoided damage to.Preferably, threshing tooth 337 is justified by the protrusion circular arc 338 and recess being connected with each other Arc 339 forms, and the center of curvature of the protrusion circular arc 338 is located at the inside of elastic shaft 333.Prominent circular arc 338 is smooth introducing Cambered surface is conducive to niblet and enters in the cutting edge of threshing tooth 337.The center of curvature of recess circular arc 339 is located at the outer of elastic shaft 333 Side, recess circular arc 339 are hook arrangement.The protrusion circular arc 338 intersects with the lateral surface of elastic shaft 333 constitutes an obtuse angle, this is recessed Falling into circular arc 339, with the lateral surface of elastic shaft 333 to intersect structure in an acute angle.It is appreciated that on the direction of rotation of grain threshing roller 330, Prominent circular arc 338 is more forward.

Thresher 300 includes threshing motor 310, feeding roller 320, flexible threshing roller 330 and soft readjustment component 340. Threshing motor 310 is fixed on 100 outside of holder, which is connected to a transmission shaft 360 repeatedly.Transmission shaft 360 is through a tooth Wheel group 370 connects feeding roller 320.In the present embodiment, gear set 370 includes one group of conical gear 371 and one group of roller gear 372.Transmission shaft 360 is connected to feeding roller 320 through the conical gear 371, and feeding roller 320 is connected to de- through the roller gear 372 Grain roller 330.In this embodiment, grain threshing roller 330 and feeding roller 320 is oppositely oriented, reaches the purpose of differential threshing.Another In feasible scheme, the gear drive of grain threshing roller and feeding roller 320 through a chain and the number of teeth not etc. also can reach differential threshing Purpose.To avoid gear set 370 from being blocked by maize pulp, the bottom of feeding cover body 210 is equipped with isolation board 213, which covers It covers on grain threshing roller 330 and positioned at close to the side of gear set 370.

Soft readjustment component 340 provides a flexible active force, auxiliary improve when thresher 300 transmits corn ear 600 by Power state avoids unexpected increased active force damage corn.It includes crossbeam 341, connecting rod 342, the first swing arm 343, second pendulum Arm 344 and adjustment spring 345.The middle part of first swing arm 343 and the second swing arm 344 is hinged on crossbeam 341.First pendulum The upper end of arm 343 is hinged to the grain threshing roller 330 of one of them, and the lower end of first swing arm 343 is sleeved on connecting rod 342.The The upper end of two swing arms 344 is hinged to another grain threshing roller 330, in the lower end articulated linkage 342 of second swing arm 344. First swing arm 343 and the second swing arm 344 constitute a pair of lever mechanism adjusted in opposite directions.Adjacent 320 stress of feeding roller is to both sides When opening, the end portion of swing arm is close to each other.Adjustment spring 345 is sleeved on connecting rod 342, the both ends point of the adjustment spring 345 It is not pressed in the lower end of the first swing arm 343 and the second swing arm 344.If corn ear 600 is caught between adjacent feeding roller 320 In gap, the end portion of swing arm is close to each other and squeezes spring, while equipment being avoided to smash small size corn ear 600.It is caught in After object takes out or disappears, adjustment spring 345 pushes feeding roller 320 to return to initial position through swing arm.It is anticipated that, two feedings Helix between roller 320 extends outwardly, and corn ear 600 can be under the guiding of helix between surprisingly squeezing into feeding roller 320 Discharge.Preferably, the outside of connecting rod 342 is equipped with is sleeved on the outside of adjustment spring 345 with sleeve 346, the sleeve.The structure can be kept away Exempt from adjustment spring 345 to be blocked by maize pulp.

Feeding roller 320 is by 321, threshing sections 322 of entrance, secondary threshing section 323 and 324 groups of threshing section three times At.There is entrance 321 reverse acting spiral slot 325, a threshing section 322 there is the first helicla flute 326, secondary threshing section 323 to have There is the second helicla flute 327, threshing section 324 has third helicla flute 328 three times.The helical pitch of reverse acting spiral slot 325 and the first spiral Slot 326 is identical but rotation direction is opposite with the first helicla flute 326.600 structure of complete corn ear is closely knit, and first threshing difficulty is big, needs Want the impact threshing of long period.When the short pitch helix of threshing section 322 can extend the delay of corn ear 600 here Between, the reverse acting spiral line of entrance 321 also can reach this purpose.First helicla flute 326 tends to corn ear 600 being moved to outlet Place, reverse acting spiral slot 325 tend to reversely drive corn ear 600 to the root of feeding roller 320.The helical pitch of second helicla flute 327 It is four times of the first helicla flute 326 and rotation direction is identical as the first helicla flute 326, the screw pitch and rotation direction of third helicla flute 328 are equal It is identical as the second helicla flute 327.After the partial kernels of corn ear 600 are divested, remaining niblet is easier to be peeled off.Two The long screw pitch structure of secondary threshing section 323 can accelerate the movement speed of corn ear 600, improve threshing efficiency.In third helicla flute 328 Equipped with multiple spike-tooths 329, the upper surface of the spike-tooth 329 is higher than the upper surface of the feeding roller 320.Threshing section 324 three times Spiral groove depth is big, and spike-tooth 329 constitutes an occlusion structure with bottom portion of groove, is conducive to peeling and is distinctly difficult to the corn removed Grain.

It is surveyed according to sample, 320 diameter of feeding roller of the utility model is about 10 to 20cm.Reverse acting spiral slot 325, first Helicla flute 326, the second helicla flute 327 are dual-thread helix.Third helicla flute 328 is single thread helix.Entrance 321 Length be 10cm, the length of a threshing section 322 is 20cm, and the length of secondary threshing section 323 is 60cm, three times threshing section 324 length is 60cm.The facewidth of reverse acting spiral slot 325 is 2cm, and the facewidth of the first helicla flute 326 is 2cm, the second helicla flute 327 facewidth is 8cm, the facewidth of third helicla flute 328 is 8cm.The helical pitch of reverse acting spiral slot 325 is 5cm, the first helicla flute 326 helical pitch is 5cm, the helical pitch of the second helicla flute 327 is 29cm, the helical pitch of third helicla flute 328 is 12cm.Dimensions above permits Perhaps certain measurement error.

If the thresing machine of Fig. 2 to 10, the utility model include mainly holder 100, feeder 200, thresher 300, binder Device 400 and loading head 500.Holder 100 is made of multiple truss, is main support member, other internal components are respectively mounted On the holder 100.

Feeder 200 includes feeding cover body 210 and multigroup vibration component 220.Feeding cover body 210 is flared, corn ear 600 enter equipment from upper part opening.Vibration component 220 is arranged side by side, the spacing and vibration group of adjacent vibration component 220 The spacing of part 220 and 210 side wall of feeding cover body is more than the diameter of most corn ear 600 and less than the length of corn ear 600.In a jumble The corn ear 600 of accumulation is located at 220 top of vibration component.220 frequent vibration of vibration component makes corn ear 600 change direction. The corn vertical with Turbogrid plates 222 continues forced vibration, and the corn ear 600 parallel with Turbogrid plates 222 enters thresher 300.I.e. Make corn ear 600 is a large amount of quickly to enter feeder 200, the posture that corn ear 600 enters thresher 300 is still effectively adjusted Whole, feeding efficiency is improved.Preferably, the direction of vibration of adjacent vibration component 220 just differs half period.Vibration group 220 vibrational state of part is different, and when corn ear 600 is pressed on multiple Turbogrid plates 222 simultaneously, this structure is more advantageous to corn ear 600 adjustment postures.

In the present invention, vibration component 220 includes cross bar 221, Turbogrid plates 222, vibration source 223 and vibrating spring 224.Cross bar 221 is fixed in feeding cover body 210, and the cross bar 221 is parallel with the grain threshing roller 330 and/or feeding roller 320, should Cross bar 221 is equipped with multiple guide pipes 225.The bottom of Turbogrid plates 222 is equipped with multiple guide posts 226, and the guide post is slideably Stretch into guide pipe.Guide pipe can keep Turbogrid plates 222 vertically to vibrate.The spacing of adjacent Turbogrid plates 222 is 4 to 10cm （The diameter of most corn ear 600 to corn ear 600 length）.Vibration source 223 is fixed on cross bar 221, the vibration source 223 Output is pivotally connected to Turbogrid plates 222.Vibrating spring 224 is sleeved on the outside of guide pipe, and one end of the vibrating spring 224 is fixed on institute It states on cross bar 221, the other end withstands on the bottom of the Turbogrid plates 222.Vibrating spring 224 is so that the vibration of Turbogrid plates 222 is more equal It is even（Damping action）, and initial pretension is provided.And vibrating spring 224 is tension state, corn ear in the initial state After 600 accumulations, spring is in smaller elongation state.When vibration source 223 vibrates, spring periodic elongation and shortening.The structure Can backward spring fatigue, and avoid vibration source 223 work when pressure it is excessive.In addition, the 222 have a generally triangular shape knot of Turbogrid plates There are structure two groups of guide surfaces 227, corn ear 600 can be slided along the guide surface.The vibration source 223 of the present embodiment can be mangneto Telescope motor, the motor with screw rod（Electric pushrod）Etc..

Eccentric swage 400 includes binder arm 410, promotes spring 420 and at least one set of binder axis 430, binder pipe 431 and pressure Expect spring 432.Binder arm 410 is located at 320 top of grain threshing roller 330 and feeding roller.Binder arm 410 is inverted T-shaped structure.Binder Arm 410 has a slide-bar 411 and two lateral bearing portions 412.The one end for promoting spring 420 is fixed on feeding cover body 210, The other end is connected to binder arm 410.Promotion spring 420 is compression spring, can lift binder arm 410 and its accessory structure.Stop It is opposite when spring action direction is with work when machine.When shutdown, promotes spring 420 and compressed；When work, the pressure of spring 420 is promoted Contracting amount reduces or negative drawing.If the initial forces of spring are identical as the direction of the active force of corn ear 600, spring can It can be caused to damage by limiting pressure.Specifically, feeding cover body 210 has a support plate 211, the 211 top tool of support plate There is a sleeve 212.Slide-bar 411 passes through sleeve 212, sleeve 212 to play guiding role, and guiding binder arm 410 moves.Slide-bar 411 Top there are multiple nuts 413, promote spring 420 and be sleeved on the outside of sleeve, the both ends of the spring are separately fixed at 413 He of nut In support plate 211.The elemental height that binder arm 410 can be adjusted by nut 413, adapts to various sizes of corn ear 600.This Outside, binder arm 410 is equipped with two groups of binder pipes 431, and binder pipe 431 or so is arranged in 410 both sides of binder arm, it is equal to form a kind of stress The state of weighing apparatus.Binder pipe 431 is symmetrical arranged four trapezoidal pressing plates 433, and binder pipe 431 is symmetrical arranged six trapezoidal pressing plates 433.Number The pressure that the trapezoidal pressing plate 433 that mesh is not equal, size is different forms corn ear 600 is different, ensures the corn ear 600 of needles of various sizes Can effectively it be suppressed.

Binder axis 430 is rotatably mounted in binder arm 410, which is connected to a motor 434.Binder pipe 431 are slideably sleeved in binder axis 430, and the side wall of the binder pipe 431 connects multiple trapezoidal pressing plates 433.Motor drives binder Axis 430 rotates, and binder axis 430 suppresses corn ear 600 with dynamic pressure plate.One end of binder spring 432 is fixed on binder axis 430, The other end is fixed in binder pipe 431.Binder spring 432 and promotion spring 420 are so that the application of eccentric swage 400 is a kind of elasticity Press power, further decrease the damage to corn ear 600.In the present embodiment, binder axis 430 is equipped with two groups of nuts 435, pressure Expects pipe 431 is located between two groups of nuts 435, and binder spring 432 withstands on 435 inside of nut.Nut 435 adjusts binder spring 432 Pretightning force and binder pipe 431 initial position, adapt to the corn of different sizes and threshing depth.Binder pipe 431 has one to prolong Extending portion 436, binder spring 432 are located in the extension 436.Binder spring 432 is protected in extension 436, avoids corn Fragment is stuck in gapping of spring.

In the present invention, 320 height of feeding roller is less than grain threshing roller 330,330 shape of two pairs of feeding rollers 320 and grain threshing roller At with groove structure, corn ear 600 is in the inner.Corn ear 600 is moved along feeding roller 320, and grain threshing roller 330 peels niblet off. In the best condition, corn is located on feeding roller 320 and is in close contact grain threshing roller 330.Trapezoidal pressing plate 433 has long side and short Side, long side are located at the close feeding roller 320 of trapezoidal pressing plate 433, close grain threshing roller 330 of the short side close to the trapezoidal pressing plate 433 Side.The bottom of trapezoidal pressing plate 433 is bevel edge, which constitutes one to corn ear 600 and be directed toward grain threshing roller 330 and feeding roller 320 pressure ensure that corn ear 600 is movably in close contact grain threshing roller 330 simultaneously along feeding roller 320.The pressure gradually changes, beautiful It is compressed in grain threshing roller 330 to rice 600 gradual change of stick, threshing efficiency is further improved.Under smaller press power, major diameter The niblet at position is deviate from.When press power gradually increases, the niblet at path position is deviate from, and constant press power is avoided to squeeze Bad corn ear 600, percentage of damage is minimized.

Loading head 500 is the accessory structure of the utility model, is used to the niblet of thresher 300 everywhere concentrating storage And it releases.Loading head 500 includes auger 510 and mesh plate 520.The mesh plate 520 is fixed on 100 bottom of holder, and fraising can turn It is fixed on dynamicly in mesh plate 520, motor drives auger 510 to store niblet.Fine grain dust is from mesh plate 520.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection domain within.

Claims (8)

1. a kind of flexible threshing roller, which is characterized in that be made of mandrel, set axis and elastic shaft, the mandrel is fixed on the set In axis, the set axis is fixed in the elastic shaft, wherein the set axis includes multiple protruding portion and for connecting the protruding portion Arcwall forms, and the lateral wall of the mandrel is fitted on the inside of the arcwall, and the inside of the elastic shaft is at least one Recessed groove, for the protruding parts in the recessed groove, the outside of the elastic shaft has multiple threshing tooths, at least one threshing tooth Positioned at the outside of the protruding portion, at least one threshing tooth is located at the outside of the arcwall.

2. flexible threshing roller according to claim 1, which is characterized in that the threshing tooth is by the protrusion circular arc that is connected with each other With recess circular arc composition, the center of curvature of the protrusion circular arc is located at the inside of the elastic shaft, the center of curvature of the recess circular arc Positioned at the outside of the elastic shaft.

3. flexible threshing roller according to claim 2, which is characterized in that the lateral surface of the protrusion circular arc and the elastic shaft Intersection constitutes an obtuse angle, and it is in an acute angle which with the lateral surface of the elastic shaft intersects structure.

4. flexible threshing roller according to claim 3, which is characterized in that the mandrel and/or set axis are by carbon structural steels Or No. 45 steel are made.

5. flexible threshing roller according to claim 3, which is characterized in that the elastic shaft is by isoprene rubber and/or neoprene Rubber is made.

6. a kind of maize sheller, is at least made of holder and thresher, the thresher includes threshing motor, feeding roller, such as Flexible threshing roller described in claim 1 to 5 any one, the threshing motor are fixed on the stent outer, threshing electricity Machine is connected to a transmission shaft, which connects the grain threshing roller and/or feeding roller through a gear set.

7. maize sheller according to claim 6, which is characterized in that the thresher further includes soft readjustment component, should Soft readjustment component includes crossbeam, connecting rod, the first swing arm, the second swing arm and adjustment spring, and first swing arm and second are put The middle part of arm is hinged on the crossbeam, and the upper end of first swing arm is hinged to the grain threshing roller of one of them, this The lower end of one swing arm is sleeved on the connecting rod, and the upper end of second swing arm is hinged to the adjacent grain threshing roller, this second The lower end of swing arm is hinged on the connecting rod, and the adjustment spring is sleeved on the connecting rod, and the both ends of the adjustment spring are pressed respectively In the lower end of first swing arm and the second swing arm.

8. maize sheller according to claim 7, which is characterized in that the outside of the connecting rod is equipped with and sleeve, the set Jacket casing is in the outside of the adjustment spring.