阅读说明：本技术 一种茎穗兼收型玉米收获机秸秆处理系统 (Straw treatment system of stem-ear harvesting type corn harvester ) 是由 李衡 李侠 杨香林 于 2021-08-02 设计创作，主要内容包括：本发明公开了一种茎穗兼收型玉米收获机秸秆处理系统,包括秸秆收获系统、还田机、动力传递系统和发动机；秸秆收获系统包括下割台、喂入器、破碎机、抛送风机、二次抛送部和草仓；下割台、喂入器和破碎机前后依次连接,抛送风机的底部与破碎机连接；抛送风机的上部设有二次抛送部,与草仓相匹配；主传动轴的上依次设置有还田机动力输入链轮和主传动轴皮带轮二；还田机动力输入链轮通过动力传递系统将动力传递至还田机；下割台、喂入器、破碎机和抛送风机传动连接主传动轴皮带轮二。本发明通过一根主传动轴将动力传递至玉米收获机各个工作单元,节省空间,方便整机传动系统的布置,减少动力传递级数,提高传递效率以及可靠性。(The invention discloses a straw treatment system of a stem-ear harvesting type corn harvester, which comprises a straw harvesting system, a returning machine, a power transmission system and an engine; the straw harvesting system comprises a lower cutting table, a feeder, a crusher, a throwing and air-supplying machine, a secondary throwing and air-supplying part and a straw bin; the lower cutting table, the feeder and the crusher are sequentially connected from front to back, and the bottom of the throwing air feeder is connected with the crusher; the upper part of the throwing air feeder is provided with a secondary throwing part which is matched with the grass bin; a power input chain wheel of the returning machine and a belt pulley II of the main transmission shaft are sequentially arranged on the main transmission shaft; the power input chain wheel of the returning machine transmits power to the returning machine through a power transmission system; the lower cutting table, the feeder, the crusher and the throwing air feeder are in transmission connection with a main transmission shaft belt pulley II. The invention transmits power to each working unit of the corn harvester through the main transmission shaft, saves space, facilitates the arrangement of a transmission system of the whole machine, reduces the power transmission stages and improves the transmission efficiency and reliability.)

1. A straw treatment system of a stalk-ear harvesting type corn harvester comprises a straw harvesting system, a field returning machine, a power transmission system and an engine;

the straw harvesting system comprises a lower cutting table, a feeder, a crusher, a throwing and air-supplying machine, a secondary throwing and air-supplying part and a straw bin;

the lower header, the feeder and the crusher are sequentially connected from front to back and are arranged at the lower layer of the front part of the frame; the bottom of the throwing air feeder is connected with the crusher; the upper part of the throwing air feeder is provided with a secondary throwing part which is matched with the grass bin; the lower cutting table, the feeder, the crusher, the throwing blower and the returning machine are respectively in transmission connection with the engine through a power transmission system;

the device is characterized in that a power main output wheel is arranged on an engine, the power main output wheel is connected with a main transmission shaft belt pulley I arranged at the left end of a main transmission shaft through belt transmission, and a power input chain wheel of a field returning machine and a main transmission shaft belt pulley II are sequentially arranged at the other end of the main transmission shaft; the power input chain wheel of the returning machine transmits power to the returning machine through a power transmission system; the lower cutting table, the feeder, the crusher and the throwing air feeder are in transmission connection with a main transmission shaft pulley II.

2. The stalk treatment system of the corn harvester of claim 1, wherein: the transition shaft I of the returning machine is connected with the transition shaft II of the returning machine through the universal shaft in a transmission manner, the transition shaft II of the returning machine is provided with a driving belt pulley of the returning machine, and the driving belt pulley of the returning machine is in transmission connection with the power input belt pulley of the returning machine on the power shaft of the returning machine through a belt.

3. The straw treatment system of the stalk-ear harvesting type corn harvester according to claim 2, wherein: the reversing chain wheel set comprises a reversing main chain wheel, a reversing auxiliary chain wheel I, a reversing auxiliary chain wheel II and a reversing chain, and the reversing auxiliary chain wheel I and the reversing auxiliary chain wheel II are respectively positioned on two sides of the reversing main chain wheel;

the field returning machine power input chain wheel is sequentially connected with a first reversing auxiliary chain wheel, a first reversing main chain wheel and a second reversing auxiliary chain wheel through a reversing chain, wherein the field returning machine power input chain wheel, the first reversing auxiliary chain wheel and the second reversing auxiliary chain wheel are located on the inner side of the reversing chain, the reversing main chain wheel is located on the outer side of the reversing chain, and the reversing main chain wheel is arranged on a transition shaft of the field returning machine.

4. The stalk treatment system of the corn harvester of claim 1, wherein: a fan power shaft is arranged in the throwing and air supplying machine, a throwing and air supplying wheel is arranged on the fan power shaft, the fan power shaft is rotatably arranged on the side wall of the fan, and a fan power shaft power input belt pulley is arranged at the right end of the fan power shaft;

the crusher comprises a shell and a movable cutter roller which is rotatably arranged on the shell, wherein the movable cutter roller comprises a cutter shaft and a cutter shaft input wheel, and the cutter shaft input wheel is arranged at the left end of the cutter shaft;

the main transmission shaft belt pulley two-way is in transmission connection with a fan power shaft through a belt and a fan power shaft power input belt pulley, the other end of the fan power shaft is further provided with a fan power shaft power output belt pulley, and the fan power shaft power output belt pulley is in transmission connection with a cutter shaft through a belt and a cutter shaft input wheel.

5. The straw treatment system of the stalk-ear harvesting type corn harvester according to claim 4, wherein: the feeder comprises a feeder lower shaft, a feeder upper shaft, a front convex rib roller and a rear feeding smooth roller which are positioned on the lower layer, and a front sawtooth knife roller and a rear long knife roller which are positioned on the upper layer; the left end of the front convex rib roller is provided with a front convex rib roller input gear, the left end of the rear feeding smooth roller is provided with a rear feeding smooth roller input gear, the right end of the front serrated knife roller is provided with a front serrated knife roller input wheel, and the right end of the rear long knife roller is provided with a rear long knife roller input wheel;

the feeding device comprises a feeding device upper shaft, a feeding device lower shaft power input wheel, a feeding main shaft output wheel and a feeding main shaft output gear, wherein the feeding device lower shaft is provided with the feeding device lower shaft power input wheel, the feeding main shaft output wheel and the feeding main shaft output gear, the feeding main shaft output gear is meshed with a front rib roller input gear and a rear feeding smooth roller input gear at the same time, the feeding main shaft output wheel is in transmission connection with the feeding device upper shaft through a chain and a feeding device upper shaft input wheel, the right end of the feeding device upper shaft is provided with the feeding device upper shaft output wheel, and the feeding device upper shaft output wheel is in transmission connection with a front sawtooth knife roller input wheel and a rear long knife roller input wheel through the chain.

6. The straw treatment system of the stalk-ear harvesting type corn harvester according to claim 5, wherein: the right end of the cutter shaft is also provided with a crusher power shaft belt wheel II, and the crusher power shaft belt wheel II is in transmission connection with a feeder lower shaft through a belt and a feeder lower shaft power input wheel; the left end of the lower shaft of the feeder is connected with a header power shaft through a first coupler, and the header power shaft drives the lower header.

7. The straw treatment system of the stalk-ear harvesting type corn harvester of claim 6, wherein: the lower header comprises a header shell, a lower header auger and a straw cutting mechanism, wherein the lower header auger and the straw cutting mechanism are arranged on the header shell; the straw cutting mechanism comprises a movable cutter component and a swinging ring box for driving the movable cutter component to swing, and a swinging box input wheel is arranged on the swinging box;

the cutting table driving wheel is arranged at the right end of the cutting table power shaft and is connected with a cutting table lower driving shaft through chain transmission, a swing box driving belt pulley and a lower cutting table auger driving wheel are sequentially arranged on the cutting table lower driving shaft from left to right, and the swing box driving belt pulley is in transmission connection with a swing box through a belt and a swing box input wheel; the lower header auger driving wheel is connected with the lower header auger through a chain and a lower auger input wheel in a transmission way.

8. The stalk treatment system of the corn harvester of claim 7, wherein: the header shell comprises a left side plate, a right side plate, a rear side plate and a bottom plate, wherein a straw outlet is formed in the center of the rear side plate, and two ends of the lower header auger are respectively arranged on the left side plate and the right side plate; the straw cutting mechanism is arranged at the front end of the bottom plate.

9. The stalk treatment system of the corn harvester of claim 8, wherein: the lower header auger comprises a roller, and helical blades are symmetrically arranged on the outer side surface of the roller; the lower header auger is provided with two stirring mechanisms between the helical blades, and the positions of the stirring mechanisms correspond to the straw outlets.

10. The stalk treatment system of the corn harvester of claim 8, wherein: the straw cutting mechanism also comprises a fixed cutter assembly, the fixed cutter assembly comprises a plurality of fixed cutters which are arranged in parallel, and the fixed cutters are arranged at the front end of the bottom plate; the movable knife assembly comprises a plurality of movable knives arranged in parallel, the movable knives are arranged on a movable knife pull plate, the swing ring box is arranged on the left side plate, a swing arm is arranged on an output shaft of the swing ring box, a pull rod is hinged to the swing arm, and the pull rod is connected with the movable knife pull plate.

Technical Field

The invention relates to the field of corn harvesters, in particular to a straw treatment system of a stem-ear harvesting type corn harvester.

Background

A stalk and ear harvesting type corn harvester generally comprises a corn harvesting system, a straw harvesting system and a field returning machine, wherein the straw harvesting system and the field returning machine form a corn straw treatment system; the straw harvesting system comprises a lower header, a feeding device, a crusher, a throwing and air supplying machine, a throwing and conveying part and a grass cabin, wherein the lower header generally comprises a right swinging cutter and a packing auger and is used for cutting off straws from roots, the cut straws are conveyed to the crusher through the feeding device, the crusher cuts the straws, and the cut straws are thrown to the grass cabin through the throwing and conveying part for recycling under the action of the throwing and air supplying machine; the field returning machine is used for crushing the root of the straw and returning the crushed straw to the field.

The existing stalk and ear harvesting type corn harvester generally transfers power to a lower cutting table, a feeding device, a crusher, a throwing blower and the like through multi-stage transmission by an engine, and has large energy loss and low product reliability due to high power transfer stage number; the lower header in the straw treatment system of the existing corn harvester has the advantages that the poking and conveying capacity of the blades of the packing auger is limited, the poking and conveying efficiency of the packing auger is difficult to meet the requirement for quick harvesting, the packing auger is highly fixed, the installation difficulty is increased, the height adjustment cannot be carried out, the lower header cannot adapt to harvesting of corns with different densities, and the adaptability is lower.

Disclosure of Invention

In order to solve the technical problems, the invention adopts the following technical scheme:

a straw treatment system of a stalk-ear harvesting type corn harvester comprises a straw harvesting system, a field returning machine, a power transmission system and an engine;

the straw harvesting system comprises a lower cutting table, a feeder, a crusher, a throwing and air-supplying machine, a secondary throwing and air-supplying part and a straw bin;

the lower header, the feeder and the crusher are sequentially connected from front to back and are arranged at the lower layer of the front part of the frame; the bottom of the throwing air feeder is connected with the crusher; the upper part of the throwing air feeder is provided with a secondary throwing part which is matched with the grass bin; the lower cutting table, the feeder, the crusher, the throwing blower and the returning machine are respectively in transmission connection with the engine through a power transmission system;

the main power output wheel is connected with a first main transmission shaft belt pulley arranged at the left end of a main transmission shaft through a belt in a transmission manner, and a second main transmission shaft belt pulley and a power input chain wheel of the field returning machine are sequentially arranged at the other end of the main transmission shaft; the power input chain wheel of the returning machine transmits power to the returning machine through a power transmission system; the lower cutting table, the feeder, the crusher and the throwing air feeder are in transmission connection with a main transmission shaft pulley II.

Preferably, the first transition shaft of the returning machine is in transmission connection with a second transition shaft of the returning machine through a universal shaft, a transmission belt pulley of the returning machine is arranged on the second transition shaft of the returning machine, and the transmission belt pulley of the returning machine is in transmission connection with the first transition shaft of the returning machine on the power shaft of the returning machine through a belt.

Preferably, the reversing chain wheel set comprises a reversing main chain wheel, a reversing auxiliary chain wheel I, a reversing auxiliary chain wheel II and a reversing chain, and the reversing auxiliary chain wheel I and the reversing auxiliary chain wheel II are respectively positioned at two sides of the reversing main chain wheel;

the field returning machine power input chain wheel is sequentially connected with a first reversing auxiliary chain wheel, a first reversing main chain wheel and a second reversing auxiliary chain wheel through a reversing chain, wherein the field returning machine power input chain wheel, the first reversing auxiliary chain wheel and the second reversing auxiliary chain wheel are located on the inner side of the reversing chain, the reversing main chain wheel is located on the outer side of the reversing chain, and the reversing main chain wheel is arranged on a transition shaft of the field returning machine.

Preferably, the reversing chain wheel set further comprises a reversing chain tensioning assembly comprising a tensioning chain wheel. The tensioning chain wheel is arranged on the inner side or the outer side of the reversing chain.

Preferably, a fan power shaft is arranged in the throwing and air supplying machine, a throwing and air supplying wheel is arranged on the fan power shaft, the fan power shaft is rotatably arranged on the side wall of the fan, and a fan power shaft power input belt pulley is arranged at the right end of the fan power shaft;

the crusher comprises a shell and a movable cutter roller which is rotatably arranged on the shell, wherein the movable cutter roller comprises a cutter shaft and a cutter shaft input wheel, and the cutter shaft input wheel is arranged at the left end of the cutter shaft;

the main transmission shaft belt pulley two-way is in transmission connection with a fan power shaft through a belt and a fan power shaft power input belt pulley, the other end of the fan power shaft is further provided with a fan power shaft power output belt pulley, and the fan power shaft power output belt pulley is in transmission connection with a cutter shaft through a belt and a cutter shaft input wheel.

Preferably, the feeder comprises a lower feeder shaft, an upper feeder shaft, a front ribbed roll and a rear feeding smooth roll which are positioned on the lower layer, and a front sawtooth knife roll and a rear long knife roll which are positioned on the upper layer; the left end of the front convex rib roller is provided with a front convex rib roller input gear, the left end of the rear feeding smooth roller is provided with a rear feeding smooth roller input gear, the right end of the front serrated knife roller is provided with a front serrated knife roller input wheel, and the right end of the rear long knife roller is provided with a rear long knife roller input wheel;

the feeding device comprises a feeding device upper shaft, a feeding device lower shaft power input wheel, a feeding main shaft output wheel and a feeding main shaft output gear, wherein the feeding device lower shaft is provided with the feeding device lower shaft power input wheel, the feeding main shaft output wheel and the feeding main shaft output gear, the feeding main shaft output gear is meshed with a front rib roller input gear and a rear feeding smooth roller input gear at the same time, the feeding main shaft output wheel is in transmission connection with the feeding device upper shaft through a chain and a feeding device upper shaft input wheel, the right end of the feeding device upper shaft is provided with the feeding device upper shaft output wheel, and the feeding device upper shaft output wheel is in transmission connection with a front sawtooth knife roller input wheel and a rear long knife roller input wheel through the chain.

Preferably, the right end of the cutter shaft is also provided with a crusher power shaft belt wheel II, and the crusher power shaft belt wheel II is in transmission connection with the feeder lower shaft through a belt and a feeder lower shaft power input wheel; the left end of the lower shaft of the feeder is connected with a header power shaft through a first coupler, and the header power shaft drives the lower header.

Preferably, the lower header comprises a header shell, a lower header auger and a straw cutting mechanism, wherein the lower header auger and the straw cutting mechanism are arranged on the header shell; the straw cutting mechanism comprises a movable cutter component and a swinging ring box for driving the movable cutter component to swing, and a swinging box input wheel is arranged on the swinging box;

the cutting table driving wheel is arranged at the right end of the cutting table power shaft and is connected with a cutting table lower driving shaft through chain transmission, a swing box driving belt pulley and a lower cutting table auger driving wheel are sequentially arranged on the cutting table lower driving shaft from left to right, and the swing box driving belt pulley is in transmission connection with a swing box through a belt and a swing box input wheel; the lower header auger driving wheel is connected with the lower header auger through a chain and a lower auger input wheel in a transmission way.

Preferably, the header shell comprises a left side plate, a right side plate, a rear side plate and a bottom plate, a straw outlet is formed in the center of the rear side plate, and two ends of the lower header auger are respectively mounted on the left side plate and the right side plate; the straw cutting mechanism is arranged at the front end of the bottom plate.

Preferably, the lower header auger comprises a roller, and helical blades are symmetrically arranged on the outer side surface of the roller; the lower header auger is provided with two stirring mechanisms between the helical blades, and the positions of the stirring mechanisms correspond to the straw outlets.

Preferably, a first fixed disc is arranged in the roller, a spline shaft seat is arranged in the center of the first fixed disc, a spline shaft is arranged in the spline shaft seat in a matching manner, and the spline shaft is rotatably arranged on the right side plate; a second fixed disc is further arranged in the roller, a first fixed shaft is arranged in the middle of the second fixed disc, and the first fixed shaft is fixedly arranged on the right side plate; the second fixed disc is in running fit with the first fixed shaft; the end part of the first fixed shaft is provided with a first crank, the end part of the first crank is provided with an eccentric shaft, and the axis of the eccentric shaft deviates from the axis of the first fixed shaft.

Preferably, the toggle mechanism is rotatably mounted on the eccentric shaft and comprises a toggle rod, the end part of the toggle rod is provided with an anchor ear, and the anchor ear is rotatably mounted on the eccentric shaft; the roller middle section is provided with the opening, articulated seat is installed to the opening part, articulated seat articulates there is articulated piece, articulated piece is provided with the driving lever slide opening, the driving lever slides and passes the driving lever slide opening.

Preferably, a second crank is arranged at the end part of the eccentric shaft, a second fixed shaft is arranged at the end part of the second crank, and the second fixed shaft is coaxial with the first fixed shaft and the roller; the second fixed shaft is rotatably arranged on a third fixed disc, and the third fixed disc is arranged in the roller.

Preferably, the straw cutting mechanism further comprises a fixed cutter assembly, the fixed cutter assembly comprises a plurality of fixed cutters which are arranged in parallel, each fixed cutter comprises two fixed cutter blocks, and a fixed cutter groove is formed between the fixed cutter blocks; the fixed cutter block is arranged on a fixed cutter connecting angle plate, and the fixed cutter connecting angle plate is arranged at the front end of the bottom plate; the movable knife component comprises a plurality of movable knives arranged in parallel, the adjacent movable knives are connected together through a movable knife connecting plate, each movable knife comprises a V-shaped knife edge, and the V-shaped knife edges penetrate through the fixed knife grooves in a reciprocating mode so as to cut straws entering between the two fixed knife blocks.

Preferably, the fixed cutter mounting block is mounted on the fixed cutter connecting angle plate by rivets or bolts.

Preferably, move and install on the sword subassembly and move the sword arm-tie, the swing ring case sets up on the left side board, be provided with the swing arm on the output shaft of swing ring case, it has the pull rod to articulate on the swing arm, the pull rod with move the sword arm-tie and be connected.

After the technical scheme is adopted, compared with the prior art, the invention has the following advantages:

set gradually still field machine power input sprocket and final drive shaft belt pulley two on the final drive shaft, still field machine power input sprocket passes through drive assembly and transmits power to still field machine, final drive shaft belt pulley two is through drive assembly with power transmission to header, through a final drive shaft with power transmission to each work cell of maize picker, saves space, makes things convenient for whole machine transmission system's arrangement, reduces the power transmission progression, improves transmission efficiency and reliability.

Set up in the outside of switching-over chain and then realize the switching of direction of rotation through cooperating the switching-over main sprocket, compare in gear engagement's switching-over case, the structure is simpler, need not additionally to set up the guard box and lubricate with the filling machine oil, and no high temperature risk, cooperation required precision is low, and the fault rate is low.

The lower header of the invention adopts the fixed cutter assembly formed by arranging a plurality of fixed cutters in parallel and the movable cutter assembly formed by arranging a plurality of movable cutters in parallel, the movable cutter assembly is driven by the swing ring box to reciprocate relative to the fixed cutter assembly for cutting, the cutting efficiency is higher, each fixed cutter is provided with two fixed cutter blocks, corn stalks can enter between the two fixed cutter blocks for cutting, and the cutting missing can be effectively prevented.

The lower header auger is provided with symmetrical helical blades, straws are effectively gathered towards the middle, the poking and conveying mechanism is arranged at the middle position, corn straws can be quickly poked backwards to the feeding device, the conveying efficiency is high, the angular positions of the first fixed shaft and the eccentric shaft can be adjusted, the poking and conveying angle can be further adjusted, and the poking and conveying efficiency of the poking and conveying mechanism is improved; in addition, the two ends of the straw auger are adjustable, the height of the auger can be adjusted according to different land parcels, so that the straw auger is suitable for the pulling and conveying of corn grains with different densities, and the adaptability is strong.

Drawings

FIG. 1 is a whole vehicle structure view of the stalk and ear harvesting corn harvester of the present invention;

FIG. 2 is an overall structure diagram of the straw harvesting treatment system of the present invention;

FIG. 3 is a block diagram of the engine to power transmission system connection of the present invention;

FIG. 4 is a diagram of the power transfer system of the present invention;

FIG. 5 is a block diagram of the power transmission system of the throwing blower, the crusher, the feeder and the header of the present invention;

FIG. 6 is a view showing the internal structure of the blower of the present invention;

FIG. 7 is an overall view of the crusher of the present invention;

FIG. 8 is a view showing the internal structure of the crusher of the present invention;

FIG. 9 is a view of the structure of the lower shaft of the feeder and the power shaft of the header of the present invention;

FIG. 10 is an overall view of the feeder view of the present invention;

FIG. 11 is a perspective view of a feeder according to the present invention;

FIG. 12 is an overall view of the lower header of the present invention;

FIG. 13 is an overall structure diagram of the lower header auger of the present invention;

FIG. 14 is an exploded view of the lower header auger of the present invention;

FIG. 15 is a drawing of a structure of a toggle mechanism in the lower header auger of the present invention;

FIG. 16 is a view of the structure of a straw cutting mechanism in the lower header of the present invention;

FIG. 17 is a structural view of a fixed knife in the straw cutting mechanism of the present invention;

FIG. 18 is a structural view of a movable knife in the straw cutting mechanism of the present invention;

fig. 19 is a diagram of a lower header power transmission system of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-2, according to the embodiment of the present invention, a straw treatment system of a stalk-ear harvesting type corn harvester comprises a straw harvesting system, a returning machine 12, a power transmission system 9 and an engine 10;

the straw harvesting system comprises a lower cutting table 2, a feeder 5, a crusher 6, a throwing and air-supplying machine 7, a secondary throwing part 8 and a straw bin 13;

the upper cutting table 1, the lower cutting table 2, the feeder 5 and the crusher 6 are arranged at the front part of the frame, the upper cutting table 1 is arranged at the upper layer, and the lower cutting table 2, the feeder 5 and the crusher 6 are sequentially connected from front to back and arranged at the lower layer; the bottom of the throwing air blower 7 is connected with the crusher 6; the upper part of the throwing blower 7 is provided with a secondary throwing part 8 which is matched with the grass bin 13; the lower cutting table 4, the feeder 5, the crusher 6, the throwing blower 7 and the returning machine 12 are in transmission connection with an engine 10 through a power transmission system 9 respectively.

As shown in fig. 3, a power main output wheel 10.1 is arranged on the engine 10, the power main output wheel 10.1 is connected with a main transmission shaft belt pulley first 9.2 arranged on a main transmission shaft 9.1 through belt transmission, and in combination with fig. 4-5, the other end of the main transmission shaft 9.1 is also sequentially provided with a returning machine power input chain wheel 9.4 and a main transmission shaft belt pulley second 9.5; still field machine power input sprocket 9.4 passes through power transmission system 9 with power transmission to still field machine 12, main drive shaft belt pulley two 9.5 with power transmission to header, through a main drive shaft 9.1 with each work unit of power transmission to maize picker, save space, make things convenient for whole machine transmission system's arrangement, reduce the power transmission progression, improve transmission efficiency and reliability.

Further, as shown in fig. 4, the first returning machine power input sprocket 9.4 is in transmission connection with a first returning machine transition shaft 12.1 through a reversing sprocket group, the first returning machine transition shaft 12.1 is in transmission connection with a second returning machine transition shaft 12.3 through a cardan shaft 12.2, a second returning machine transmission belt pulley 12.4 is arranged on the second returning machine transition shaft 12.3, and the second returning machine transmission belt pulley 12.4 is in transmission connection with a second returning machine power input belt pulley 12.6 on the second returning machine power shaft 12.5 through a belt, so that the returning machine is driven to work.

The reversing chain wheel set comprises a reversing main chain wheel 9.38, a reversing auxiliary chain wheel I9.39, a reversing auxiliary chain wheel II 9.40 and a reversing chain 9.41, wherein the reversing auxiliary chain wheel I9.39 and the reversing auxiliary chain wheel II 9.40 are respectively positioned at two sides of the reversing main chain wheel 9.38;

the first reversing auxiliary chain wheel 9.39, the first reversing main chain wheel 9.38 and the second reversing auxiliary chain wheel 9.40 are sequentially connected with the power input chain wheel 9.4 of the field returning machine through a reversing chain 9.41, wherein the power input chain wheel 9.4 of the field returning machine, the first reversing auxiliary chain wheel 9.39 and the second reversing auxiliary chain wheel 9.40 are positioned on the inner side of the reversing chain 9.41, the reversing main chain wheel 9.38 is positioned on the outer side of the reversing chain 9.41, and the reversing main chain wheel 9.38 is arranged on a transition shaft first 12.1 of the field returning machine. Obviously, the reversing chain 9.41 surrounds the first reversing auxiliary chain wheel 9.39, the second reversing auxiliary chain wheel 9.40 and the returning machine power input chain wheel 9.4, so that the rotating directions of the first reversing auxiliary chain wheel 9.39, the second reversing auxiliary chain wheel 9.40 and the returning machine power input chain wheel 9.4 are consistent. The reversing main chain wheel 9.38 is matched with the outer side of the reversing chain 9.41, and the reversing auxiliary chain wheel I9.39, the reversing auxiliary chain wheel II 9.40 and the returning machine power input chain wheel 9.4 are obviously opposite in rotation direction, so that the rotation direction is switched. Through setting up the switching of direction of rotation in the outside of switching-over chain 9.41 and then realizing with the cooperation of switching-over main sprocket 9.38, compare in gear engagement's switching-over case, the structure is simpler, need not additionally to set up the guard box and lubricate with the filling machine oil, and no high temperature risk, cooperation required precision is low, and the fault rate is low.

Further, as shown in fig. 4, the reversing chain wheel set further comprises a reversing chain tensioning assembly comprising a tensioning chain wheel 9.42. The tension sprocket 9.42 is arranged inside or outside the reversing chain. The reversing chain tensioning assembly is a spring tensioning assembly or a hydraulic tensioning assembly, preferably a spring tensioning assembly. The reversing chain 9.41 is matched with the reversing main chain wheel 9.38, the reversing auxiliary chain wheel I9.39 and the reversing auxiliary chain wheel II 9.40 more tightly through the reversing chain tensioning assembly, so that falling off is prevented.

Further, as shown in fig. 6, a fan power shaft 9.47 is arranged inside the blower 7, the blower power shaft 9.47 is provided with a blower wheel 7.1, the fan power shaft 9.47 is rotatably mounted on the side wall of the fan, and the fan power shaft 9.47 is provided with a fan power shaft power input belt pulley 9.46. The power input belt pulley 9.46 of the fan power shaft is in transmission connection with the engine through a power transmission system 9.

As shown in fig. 7-8, the crusher 6 includes a housing 6.1, a fixed blade 6.2 and a movable blade roller 6.3, the fixed blade 6.2 is mounted on the housing 6.1, the movable blade roller 6.3 is rotatably mounted in the housing 6.1, the housing 6.1 is further provided with a fixed blade adjusting device 6.21, the fixed blade 6.2 is driven by the fixed blade adjusting device 6.21 to move relative to the movable blade roller 6.3, and then a cutting gap between the movable blade and the fixed blade 6.2 is adjusted. The corn stalks conveyed by the feeding device are cut up by driving the movable knife roller 6.3 to rotate and utilizing the cooperation of the blades on the movable knife roller 6.3 and the fixed blades 6.2.

Further, the knife roller 6.3 comprises a knife shaft 6.31, a blade assembly 6.32, a knife roller shaft tube 6.33, a shaft tube mounting seat 6.34 and a knife shaft input wheel 9.49, the knife roller shaft tube 6.33 is mounted on the knife shaft 6.31 through the shaft tube mounting seat 6.34, the blade assembly 6.32 is mounted on the knife roller shaft tube 6.33, wherein the blade assembly 6.32 is provided with a detachable blade.

Further, one end of the cutter shaft 6.31 is provided with a cutter shaft input wheel 9.49, and the cutter shaft input wheel 9.49 is in transmission connection with an engine through a power transmission system 9 so as to drive the movable cutter roller 6.3 to rotate.

Further, with reference to fig. 5, the second main transmission shaft belt pulley 9.5 is in transmission connection with the fan power shaft 9.47 through a belt and a fan power shaft power input belt pulley 9.46, and the middle part of the fan power shaft is connected with the fan blade of the throwing and blowing machine 7 to provide wind power for the secondary throwing and feeding part.

Further, the other end of the fan power shaft 9.47 is also provided with a fan power shaft power output belt wheel 9.48, and the fan power shaft power output belt wheel 9.48 is in transmission connection with the cutter shaft 6.31 through a belt and a cutter shaft input wheel 9.49 to provide power for the crusher.

Further, as shown in fig. 10 to 11, the feeder 5 includes a feeder lower shaft 9.52, and the feeder lower shaft 9.52 is provided with a feeder lower shaft power input wheel 9.51, a feeding main shaft output wheel 9.53 and a feeding main shaft output gear 9.54.

The feeder 5 also comprises a front convex rib roller 4.1 and a rear feeding smooth roller 4.2 which are positioned at the lower layer, and a front sawtooth knife roller 4.3 and a rear long knife roller 4.4 which are positioned at the upper layer. The left end of the front rib roller 4.1 is provided with a front rib roller input gear 9.55. And a rear feeding smooth roller input gear 9.56 is arranged at the left end of the rear feeding smooth roller 4.2. And a front sawtooth knife roller input wheel 9.57 is arranged at the right end of the front sawtooth knife roller 4.3. And a rear long knife roller input wheel 9.58 is arranged at the right end of the rear long knife roller 4.4.

And a feeding main shaft output gear 9.54 on the lower shaft 9.52 of the feeder is simultaneously meshed with a front rib roller input gear 9.55 and a rear feeding smooth roller input gear 9.56, so that the front rib roller 4.1 and the rear feeding smooth roller 4.2 are simultaneously driven to rotate.

The feeder 5 also comprises a feeder upper shaft 9.59, the left end of the feeder upper shaft 9.59 is provided with a feeder upper shaft input wheel 9.60, and the right end is provided with a feeder upper shaft output wheel 9.61; the upper shaft output wheel 9.61 of the feeder is in transmission connection with the front sawtooth knife roller input wheel 9.57 and the rear long knife roller input wheel 9.58 through a transmission belt or a chain. The feeding main shaft output wheel 9.53 is in transmission connection with the feeding device upper shaft input wheel 9.60 through a chain, so as to drive the feeding device upper shaft 9.59 to rotate, and further, the feeding device upper shaft output wheel 9.61 simultaneously drives the front sawtooth knife roller input wheel 9.57 and the rear long knife roller input wheel 9.58 to rotate so as to drive the front sawtooth knife roller 4.3 and the rear long knife roller 4.4 to rotate simultaneously.

The working process of the feeder 5 provided by the invention is as follows: corn stalks cut by the lower header enter between the front convex rib roller and the rear feeding smooth roller on the lower layer in the feeder 5 and the front sawtooth knife roller and the rear long knife roller on the upper layer, and are conveyed backwards to the crusher 6 under the action of the front convex rib roller and the rear feeding smooth roller on the lower layer and the front sawtooth knife roller and the rear long knife roller on the upper layer.

Further, as shown in fig. 5 and 9-11, the other end of the cutter shaft 6.31 is further provided with a second crusher power shaft belt wheel 9.50, the second crusher power shaft belt wheel 9.50 is in transmission connection with a lower feeder shaft 9.52 through a belt and a lower feeder shaft power input wheel 9.51, the lower feeder shaft 9.52 drives the feeder to work, and the left end of the lower feeder shaft 9.52 is connected with a power shaft 9.63 of the header through a first coupling 9.62, so that the upper header and the lower header are driven to work.

Further, as shown in fig. 12, the lower header 2 includes a header shell, and a lower header auger 200 and a straw cutting mechanism 202 which are installed on the header shell, the header shell includes a left side plate 2.1, a right side plate 2.2, a rear side plate 2.3 and a bottom plate 2.4, and a straw outlet 2.5 is provided in the center of the rear side plate 2.3. Two ends of the lower header auger 200 are respectively arranged on the left side plate 2.1 and the right side plate 2.2; the front end of the bottom plate 2.4 is provided with a straw cutting mechanism 202.

Further, as shown in fig. 13-15, the left end of the lower header auger 200 is provided with a lower auger input wheel 201, and the lower auger input sprocket 201 is in transmission connection with the header power shaft 9.63.

The lower header packing auger 200 comprises a roller 203, and helical blades 204 are symmetrically arranged on the outer side surface of the roller 203. Through the helical blade 204 that the symmetry set up, the straw that will cut off gathers together to the centre at the in-process that helical blade 204 stirred backward for the maize straw that enters into the straw header gathers together just to straw export 2.5, prevents effectively that the straw from gathering in the header and blockking up, reduces the fault rate of equipment. Two are located on the lower header auger 200 a toggle mechanism is arranged between the helical blades 204, and the position of the toggle mechanism corresponds to 2.5 of a straw outlet. The gathered straws are stirred backwards by the stirring mechanism and are output from the straw outlet 2.5 to enter the feeder.

As shown in fig. 14-15, a first fixing plate 205 is arranged in the roller 203, a spline shaft seat 206 is arranged at the center of the first fixing plate 205, a spline shaft 207 is arranged in the spline shaft seat 206 in a matching manner, and the spline shaft 207 is rotatably mounted on the right side plate 2.2. The tip of flower axle 207 is provided with down auger input wheel 201, and lower auger input wheel 201 drives flower axle 207 and rotates, and flower axle 207 drives first fixed disk 205 and rotates, and first fixed disk 205 drives roller 203 and rotates, and then makes header auger 200 begin to rotate and carry out work down.

A second fixed disk 208 is further arranged in the roller 203, a first fixed shaft 209 is arranged in the middle of the second fixed disk 208, and the first fixed shaft 209 is fixedly installed on the right side plate 2.2. The second fixing disc 208 is in rotating fit with the first fixing shaft 209. A first crank 212 is arranged at the end part of the first fixed shaft 209, an eccentric shaft 213 is arranged at the end part of the first crank 212, and the axis of the eccentric shaft 213 is deviated from the axis of the first fixed shaft 209. When the roller 203 rotates, the first fixed shaft 209 and the offset shaft 213 are fixed in position, and the roller 203 drives the second fixed disc 208 to rotate relative to the first fixed shaft 209 and the offset shaft 213 instead of rotating together.

A toggle mechanism is rotatably mounted on the eccentric shaft 213. The toggle mechanism comprises a toggle rod 214, an anchor ear 215 is arranged at the end part of the toggle rod 214, and the anchor ear 215 is rotatably arranged on an eccentric shaft 213. An opening 216 is formed in the middle section of the roller 203, a hinge seat 217 is installed at the opening 216, a hinge block 218 is hinged to the hinge seat 217, a deflector rod sliding hole is formed in the hinge block 218, and the deflector rod 214 penetrates through the deflector rod sliding hole in a sliding mode. When the roller 203 rotates, the first fixed shaft 209 and the eccentric shaft 213 are fixed, the roller 203 drives the hinged seat 217, the hinged block 218 and the shifting lever 214 to rotate, and the eccentric shaft 213 deviates from the central axis of the roller 203, so that the shifting lever 214 regularly extends out and retracts relative to the roller 203 when rotating, the backward shifting of the straws is realized, the backward shifting efficiency of the straws is further improved, the straws are prevented from being accumulated, and the risk of straw blockage is reduced.

A second crank (not shown) is arranged at the end of the eccentric shaft 213, a second fixed shaft 219 is arranged at the end of the second crank, and the second fixed shaft 219 is coaxial with the first fixed shaft 209 and the roller 203. The second fixed shaft 219 is rotatably mounted on a third fixed disk 220, and the third fixed disk 220 is mounted in the roller 203. The stability of the eccentric shaft 213 is improved by arranging the second crank, the second fixed shaft 219 and the third fixed disc 220, and the second shaking is prevented to reduce the dialing efficiency.

Further, as shown in fig. 16-18, the straw cutting mechanism 202 includes a stationary knife assembly and a movable knife assembly. The fixed knife assembly comprises fixed knives 221 which are arranged in parallel. The fixed knife 221 comprises two fixed knife blocks, a fixed knife slot 2211 is arranged between the fixed knife blocks, and one ends of the two fixed knife blocks are connected together through a fixed knife mounting block. The fixed blade mounting block is mounted on the fixed blade connection angle plate 222, and a plurality of fixed blades 221 are mounted on the fixed blade connection angle plate 222 in parallel to form a fixed blade assembly. The fixed knife mounting block is preferably mounted on the fixed knife connecting angle plate 222 by rivets or bolts, so that the fixed knife 221 can be conveniently detached and replaced. The fixed knife connecting angle plate 222 is arranged at the front end of the bottom plate 2.4.

The movable knife assembly comprises movable knives 223 arranged in parallel, and the movable knives 223 comprise V-shaped knife edges 2231. The V-shaped blade 2231 reciprocates through the stationary knife slot 2211 to cut straw entering between the two stationary knife blocks. The plurality of movable blades 223 are arranged in parallel, and two adjacent movable blades 223 are connected together through a movable blade connecting plate, so that an integrated movable blade assembly is formed. The moving knife assembly is provided with a moving knife pull plate 224, and the moving knife assembly is driven to reciprocate relative to the fixed knife assembly by reciprocating pulling the moving knife pull plate. Preferably, the movable blade pulling plate 224 is made of an elastic material.

The straw cutting mechanism 202 further comprises a swing ring box 210 arranged on the left side plate 2.1, a swing arm 225 is arranged on an output shaft of the swing ring box 210, a pull rod 226 is hinged on the swing arm 225, and the pull rod 226 is connected with the movable knife pull plate 224. The swing ring box 210 drives the swing arm 225 to swing back and forth, the swing arm 225 drives the pull rod 226 to move back and forth, the pull rod 226 drives the movable knife pulling plate 224 to move back and forth, the movable knife pulling plate 224 drives the movable knife assembly to move back and forth, the movable knife 223 is further driven to move back and forth in the fixed knife slot 2211, and corn grains entering between the two fixed knife blocks are further cut off. The corn stalks are cut off by adopting the reciprocating type straw cutter mechanism, compared with a fixed cutter, the cutting efficiency of the stalks is greatly improved, and the corn stalks can be effectively prevented from being missed to be cut by the plurality of fixed cutters and the plurality of movable cutters which are arranged in parallel, so that the harvesting quality of the corn stalks is improved.

Further, as shown in fig. 19, a swing box input wheel 211 is arranged on the swing box 210, and the swing box input wheel 211 is in transmission connection with the header power shaft 9.63 through a transmission belt.

A header driving wheel 9.64 is arranged at the right end of the header power shaft 9.63, the header driving wheel 9.64 is connected with a header lower driving shaft 9.65 through chain transmission, a swing box driving belt pulley 9.66 and a lower header auger driving wheel 9.67 are sequentially arranged on the header lower driving shaft 9.65 from left to right, and the swing box driving belt pulley 9.66 is in transmission connection with the swing box 210 through a belt and a swing box input wheel 211 so as to provide power for the swing box 210; the lower header auger driving wheel 9.67 is in transmission connection with the lower header auger 200 through a chain and a lower auger input wheel 201, so that power is provided for the lower header auger 200.

The foregoing is illustrative of the best mode of the invention and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The scope of the present invention is defined by the appended claims, and any equivalent modifications based on the technical teaching of the present invention are also within the scope of the present invention.