CN212650041U - Pneumatic paddy field fertilizing and seeding machine - Google Patents

Abstract

The utility model discloses a pneumatic paddy field fertilizing and seeding machine, which comprises a traction frame, a main frame and a floating connecting assembly; the traction frame is provided with a connecting part for connecting the wheel type tractor, and two groups of multi-channel discharging devices for respectively discharging seeds and fertilizer are arranged on the traction frame; the main frame is provided with an operation assembly, and the operation assembly sequentially comprises a wheel track processing device, a soil leveling mechanism and a seeding and fertilizing assembly from front to back; the floating connecting assembly is connected with the traction frame and the main frame. The utility model discloses a pneumatic paddy field fertilizing and seeding machine is provided with the main frame and pulls the frame, is provided with unsteady coupling assembling in order to establish the unsteady connection relation between the two between the main frame and the frame of pulling, but pulls the frame and connect the tractor, and the main frame can be carried out the profile modeling and float the operation subassembly that makes its installation and effectively act on the paddy field to can carry out wheel rut and handle, flat soil, fluting, broadcast kind, fertilization, the application cost is low, and can realize efficient seeding fertilization operation.

Description

Pneumatic paddy field fertilizing and seeding machine

Technical Field

The utility model relates to the field of agricultural machinery, in particular to a pneumatic paddy field fertilizing and seeding machine.

Background

The direct seeding technology of the rice machine saves the links of seedling raising, seedling lifting and transplanting, is a simple modern rice planting technology, and is developed rapidly in China in recent years. The existing paddy planter is mostly matched with a transplanter chassis to adapt to paddy field operation, and cannot be matched with the wheel tractor with larger holding capacity at present, so that the application cost of the machine is higher, the popularization is limited, and the matching ratio of the machine and the utilization rate of the power machinery are reduced. The technical problems that walking wheel tracks of paddy fields are large, machine bodies are prone to inclining, the forming quality of seedbeds is affected and the like mainly exist in paddy field direct seeding operation of the wheeled tractor, and the requirements of paddy field direct seeding operation cannot be met.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the defects in the prior art, the utility model provides a pneumatic paddy field fertilizing and seeding machine which can be matched with a wheel type tractor.

The technical scheme is as follows: in order to achieve the above purpose, the utility model discloses a pneumatic paddy field fertilizing and seeding machine, it includes:

a traction frame which is provided with a connecting part for connecting the wheel type tractor and is provided with two groups of multi-channel discharging devices for discharging seeds and fertilizer respectively; each group of the multipath discharging devices is connected with a plurality of discharging pipes, and the multipath discharging devices can discharge seeds or fertilizers into the discharging pipes and introduce airflow into the discharging pipes;

the main frame is provided with an operation assembly, and the operation assembly sequentially comprises a wheel track processing device, a soil leveling mechanism and a seeding and fertilizing assembly from front to back; the seeding and fertilizing assembly comprises a plurality of groups of feeding assemblies arranged in a left-right linear array, and each group of feeding assemblies comprises a seed feeding assembly and a fertilizing assembly; the seed feeding assembly and the fertilizer feeding assembly are respectively connected with the discharging pipe for seeding and the discharging pipe for fertilizing; and

and the floating connecting assembly is used for connecting the traction frame and the main frame so that the main frame can elastically float up and down and elastically swing left and right relative to the traction frame.

Further, the seed feeding assembly and the fertilizer feeding assembly contained in each group of feeding assemblies are arranged in parallel;

the seed throwing assembly comprises a seed groove scribing block and a seed sowing unit; the fertilizer feeding assembly comprises a fertilizer groove scribing block and a fertilizer feeding unit;

the upper ends of the seeding unit and the fertilizing unit are respectively connected with a seeding pipe for seeding and a fertilizing pipe for fertilizing.

Further, a fertilizer groove widening unit is installed at the rear end of the fertilizer groove dividing block, and the fertilizer groove dividing block and the fertilizer groove widening unit can be matched with each other to form a fertilizer groove with a narrow upper part and a wide lower part on the land.

Further, the floating connection assembly comprises a transition frame, the transition frame is connected with the traction frame through an elastic floating mechanism, and the elastic floating mechanism enables the transition frame to elastically move up and down on the rear side of the traction frame; the main frame can elastically swing left and right relative to the transition frame.

Furthermore, the multi-channel discharger comprises a case, wherein a material cabin, an air cabin and a plurality of discharging channels are arranged in the case;

a plurality of groups of discharging assemblies are mounted in the case, and the discharging assemblies can obtain seeds or fertilizers from the material cabin and discharge the seeds or the fertilizers into the discharging channel;

the case is provided with an air blower for blowing air flow into the air cabin, and the air cabin is provided with an air outlet;

the blanking pipe can receive seeds or fertilizers falling from the blanking channel and airflow overflowing from the air outlet.

Furthermore, a land wheel is rotatably mounted on the main frame and establishes a transmission relation with the discharging assembly through a flexible shaft.

Further, the discharging assembly is driven by a motor to operate, the motor is connected with a controller, and the controller is further connected with a detector for detecting the overall speed or the operation displacement of the pneumatic paddy field fertilizing and seeding machine.

Further, each group of discharging components can be opened and closed independently.

Further, the working assembly further comprises a furrow opener.

Further, the wheel rut processing device comprises an auger shaft and an auger assembly; the auger assembly is adjustable in position in the length direction of the auger shaft; the auger assembly is provided with two helical portions with opposite helical directions.

Has the advantages that: the utility model discloses a pneumatic paddy field fertilizing and seeding machine is provided with the main frame and pulls the frame, is provided with unsteady coupling assembling in order to establish the unsteady connection relation between the two between the main frame and the frame of pulling, but pulls the frame and connect the tractor, and the main frame can be carried out the profile modeling and float the operation subassembly that makes its installation and effectively act on the paddy field to can carry out wheel rut processing, flat soil, fluting, broadcast kind, fertilization. The utility model discloses a pneumatic paddy field fertilizing and seeding machine can use with ordinary wheeled tractor is supporting, uses with low costsly, and can realize efficient seeding fertilization operation.

Drawings

FIG. 1 is a side view of a pneumatic paddy field seeder combined with fertilising apparatus;

FIG. 2 is a front view of a pneumatic paddy field fertilizing and seeding machine;

FIG. 3 is a schematic diagram of a multi-channel discharger driven by a motor;

FIG. 4 is a cross-sectional view of a multiple discharger;

FIG. 5 is a half-sectional three-dimensional structure view of a multi-channel discharger;

FIG. 6 is a structural diagram of a land wheel driven multi-way discharger;

FIG. 7 is a view showing a structure of a discharging wheel for discharging fertilizer;

FIG. 8 is a view showing a structure of a discharge wheel for seed metering;

FIG. 9 is an enlarged structural view of the portion A in FIG. 3, i.e., a structural view of a first state outside the discharging assembly portion;

FIG. 10 is a view of the exterior side of the discharge assembly in a first state;

FIG. 11 is an enlarged structural view of a handle portion;

FIG. 12 is an enlarged view of the portion C of FIG. 5, i.e., a view of the inner side of the discharge assembly in a first state;

FIG. 13 is a second state view of the inner side of the discharge assembly;

fig. 14 is an enlarged structural view of a portion B in fig. 3, that is, a first state structural view of a material discharge assembly portion;

FIG. 15 is a second state block diagram of the material delivery assembly portion;

FIG. 16 is a first perspective view of the main frame, the tractor frame and the task module;

FIG. 17 is a second perspective view of the main frame, the tractor frame and the working assembly;

FIG. 18 is a cross-sectional view of the main frame, the tractor frame and the operating assembly;

FIG. 19 is a bottom view of the main frame, the tractor frame and the working assembly;

FIG. 20 is an enlarged structural view of portion D of FIG. 16;

FIG. 21 is a block diagram of the auger assembly;

FIG. 22 is an enlarged structural view of portion E of FIG. 17;

FIG. 23 is an enlarged structural view of portion F of FIG. 16;

FIG. 24 is a block diagram of a portion of the floating attachment assembly;

FIG. 25 is a structural drawing of a scale.

In the figure: 1-a chassis; 11-material compartment; 12-a wind cabin; 13-a blanking channel; 131-an opening; 14-a slide plate; 15-a discharge opening; 16-air inlet; 17-a separator; 18-an air outlet; 19-arc chute; 110-a separation unit; 120-a box door; 130-a barrier net; 2-a discharge assembly; 21-a discharge wheel; 211-material accommodating groove; 212-a distribution tray; 213-raised teeth; 214-chamfering; 22-scraping plate; 221-a drive end; 23-a spacing wheel; 24-a handle; 241-loosening the arc surface section; 242-tensioning the arc segment; 243-spacing protrusions; 3-a material exporting assembly; 31-state switching structure; 311-a rotating shaft; 312-a toggle piece; 313-hand wheel; 314-a fixture; 32-an interception unit; 4-a drive unit; 41-ground wheel; 42-a motor; 43-a flexible shaft; 5-seeding and fertilizing components; 51-groove scribing block; 52-seeding unit; 54-a fertilizer groove widening unit; 541-side plate; 542-flaring portion; 55-a fertilizer applying unit; 61-side baffle; 62-a foot support; 63-plug of the plug part; 7-a blanking pipe; 71-a transition bucket; 8-a floating connection assembly; 81-suspension pins; 812-a fourth shaft; 82-a transition frame; 821-a third stem; 83-elastic floating mechanism; 831-first bar; 832-second bar; 833-spring cartridge; 834-a tie rod; 835-scale; 8351-hinged end; 8352-axially extending end; 8353-indicating end; 836-compression spring; 84-tension spring; 85-adjusting bolts; 9-a wheel track processing device; 91-auger support; 92-auger shaft; 921-square shaft section; 922-a first shaft section; 923-a second shaft section; 93-an auger assembly; 931-the helical portion; 932-a midsection; 9321-round tube portion; 9322-end plate; 933-tightening the screw; 94-a power unit; 941-hydraulic motor; 942-proportional valve; 95-an adjustment mechanism; 951-a handle seat; 952-adjusting the handle; 953-swivel nut; 10-a main frame; 20-a tractor frame; 30-a soil leveling mechanism; 301-earth leveling plate; 302-a triangle; 40-a furrow opener; 401 — an insert; 50-a blower; 60-stirring shaft.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The pneumatic paddy field fertilizing and seeding machine shown in fig. 1 and fig. 2 comprises a main frame 10 and a traction frame 20 which are connected through a floating connection assembly 8. The floating connecting assembly 8 enables the main frame 10 to elastically float up and down and swing left and right relative to the traction frame 20. When tractors such as tractors pull agricultural cultivation and seeding machinery to operate, the tractor frame 20 is directly mounted on the tractor, and the tractor is not stable in the movement process, so that the tractor frame 20 can generate large jolt along with jolt movement of the tractor, the floating connection assembly 8 can effectively and automatically adjust the relative pose between the main frame 10 and the tractor frame 20 in real time, and filter jolt of the tractor frame 20, so that devices on the main frame 10 can be attached to the ground in real time.

The traction machine frame 20 is used for connecting traction machines such as tractors, and two groups of multi-channel discharging devices are fixedly mounted on the main machine frame 10, wherein one multi-channel discharging device is used for discharging seeds, the other multi-channel discharging device is used for discharging fertilizers, and the multi-channel discharging device for discharging seeds and the multi-channel discharging device for discharging fertilizers can respectively discharge seeds and fertilizer flow stably and continuously to the outside of the machine case 1.

The main frame 10 is provided with an operation assembly which is a part of the agricultural cultivation machine directly acting on the land and is used for carrying out land surface leveling, grooving, seeding and fertilizing and ditching operations.

As shown in fig. 16-19, the working assembly comprises a wheel track processing device 9, a soil leveling mechanism 30, a furrow opener 4 and a seeding and fertilizing assembly 5; wherein, the wheel track processing device 9, the soil leveling mechanism 30 and the seeding and fertilizing assembly 5 are arranged in sequence from front to back; the furrow opener 4 is mounted on the soil levelling means 30. Therefore, when the operation assembly operates, the operations of wheel track covering, soil leveling, ditch opening, seeding and fertilization can be sequentially performed.

As shown in fig. 17, the sowing and fertilizing assembly 5 comprises a plurality of groups of feeding assemblies arranged in a linear array, and each group of feeding assemblies comprises a seed feeding assembly and a fertilizing assembly which are arranged in parallel; as shown in fig. 22, the seed feeding assembly comprises a seed groove dividing block 51 and a seeding unit 52, the seed groove dividing block 51 can divide a seed groove on the ground, the upper end of the seeding unit 52 is connected with a multi-channel discharger for discharging seeds through a discharging pipe 7, and the lower end of the seeding unit drops the seeds discharged by the multi-channel discharger into the seed groove.

The fertilizer feeding assembly comprises a fertilizer groove dividing block 53 and a fertilizer discharging unit 55, the fertilizer groove dividing block 53 can divide a fertilizer groove on the land, the upper end of the fertilizer discharging unit 55 is connected with a multi-channel discharger for discharging fertilizer through a discharging pipe 7, and the fertilizer discharged by the multi-channel discharger is dropped into the fertilizer groove through the lower end of the fertilizer discharging unit. Preferably, since the fertilizer needs to be deeply applied and covered with soil, a fertilizer groove widening unit 54 is provided at the rear side of the fertilizer groove partitioning block 53, and a blanking guide groove with the upper side butted with the lower fertilizer unit 55 is formed on the fertilizer groove widening unit 54; the trough widening unit 54 includes two side plates 541, and an outwardly flared portion 542 extending rearward from a lower side of each of the side plates 541, so that the outer width of the trough widening unit 54 is increased from narrow to wide in a front-to-rear direction. Widen unit 54 through above-mentioned fat groove, because the existence of the portion 542 that flare outward, the portion 542 that flare outward can widen the latter half in the groove that the fat groove cutting block 53 was drawn, make the fertilizer groove narrow under the final shaping wide, after fertilizer put in the bottom in fertilizer groove through the unloading guide slot, because the fertilizer groove is narrow under the wide, the earth of top can sink and get down and cover fertilizer, has satisfied the input demand of the deep-fertilizing earthing of fertilizer.

The multiple discharger shown in fig. 3-5 comprises a cabinet 1, a discharge assembly 2, a blower 50, a driving unit 4 and a discharge pipe 7.

The case 1 comprises a case body 1; the chassis body 1 is internally provided with a slideway plate 14 and a clapboard 17, wherein the slideway plate 14 and the clapboard 17 are both arranged in an inclined manner, and the inclined directions of the slideway plate 14 and the clapboard 17 are opposite, namely, one of the slideway plate and the clapboard is inclined forwards, and the other is inclined backwards, so that the structure layout of the chassis body is in a herringbone structure. The chute plate 14 and the partition plate 17 divide the space in the case body 1 into three parts, namely a material cabin 11, an air cabin 12 and a blanking area, wherein the blanking area is divided into a plurality of blanking channels 13 which are linearly arranged in an array manner in the left-right direction by a plurality of dividing units 110. The material cabin 11 is located at the uppermost position and is located obliquely above the chute plate 14, the wind cabin 12 is located obliquely below the chute plate 14 and the partition plate 17, and the blanking area is located obliquely above the partition plate 17.

The material cabin 11 is used for containing agricultural materials, the upper side of the material cabin is bucket-shaped, more materials can be added at one time, and a box cover capable of being opened and closed is arranged above the material cabin 11. The stirring shaft 6 is further installed on the lower side of the material cabin 11, the stirring shaft 6 is composed of a shaft body and a plurality of split pins fixed on the shaft body, and an angle between the axial direction of each split pin and the axial direction of the shaft body is an acute angle, so that the stirring range of the split pins is larger after the shaft body rotates. Through setting up (mixing) shaft 60, can prevent that the material from forming the state of stable not unloading in material cabin 11, the (mixing) shaft 60 can break the stable condition and make the material in the material cabin 11 constantly discharged by row material subassembly 2 in succession. In addition, the stirring shaft 60 can also stir the agglomerated materials to facilitate discharging. The material cabin 11 has a barrier net 130 on the upper side, the barrier net 130 can prevent the mud blocks mixed in the agricultural material from entering the material cabin 11, and can prevent the user from mistakenly dropping the workpiece and other objects into the material cabin 11.

The air chamber 12 extends along the left and right direction of the case body 1, and is in a long strip shape, an air inlet 16 leading to the air chamber 12 is arranged at the side end (left end or right end) of the case body 1, the blower 50 is correspondingly installed at the side end of the case body 1, and an air outlet of the blower 50 is connected with the air inlet 16 to blow air into the air chamber 12.

In the prior art, due to the adoption of the single discharger, feeding and discharging are complex, and a complex air path needs to be designed to realize pneumatic auxiliary discharging of each single discharger, so that the whole structure of the discharger is complex and bloated. In this embodiment, benefit from the chassis body 1 of integral type design, all arrange the material subassembly 2 and concentrate and install in chassis 1 for row's material ware overall structure is compact, and all arrange the material of material subassembly 2 sharing same material cabin 11, can realize unified reinforced, compare in prior art and will singly arrange the reinforced situation of material ware to every monomer formula alone, reinforced very simple, chassis body 1 left right direction's length is short, and reinforced back material is difficult for the part to pile up. In addition, thanks to the design of the centralized case, the air path is greatly simplified, and because the arrangement position of the air cabin 12 and the installation position of the blower 5 are reasonably arranged, the front end and the rear end of the case body 1 are occupied by one end except the blanking area, and the other end is not occupied by other structures, a discharge opening 15 can be formed at the bottom of the material cabin 11, and the discharge opening 15 and the blanking channel 13 are respectively arranged at the front side and the rear side of the case body 1; a box door 120 which can be opened and closed relative to the chassis body 1 is installed at the position of the discharge opening 15. By setting the discharge opening 15 at the above position, the discharge opening 15 extends in the widest direction (i.e., the left-right direction) of the size of the cabinet body 1, and opening the door 120, all the remaining materials in the material compartment 11 can be tilted out.

As shown in fig. 12, the discharge assembly 2 includes a discharge wheel 21, a divider wheel 23, and a scraper plate 22. The plurality of groups of discharging assemblies 2 are arranged in a linear array, the number of the discharging assemblies 2 is consistent with that of the discharging channels 13, and the discharging assemblies and the discharging channels are arranged in a one-to-one correspondence manner. The discharging wheel 21 is a main component for executing discharging operation, the scraping plate 22 is used for matching with the discharging wheel 21 to execute distributing operation, and the scraping plate 22 separates the material cabin 11 from the discharging channel 13 when the discharging assembly 2 executes discharging operation, so that agricultural materials in the material cabin 11 are prevented from directly falling into the discharging channel 13.

The periphery of the discharge wheel 21 is provided with a plurality of material accommodating grooves 211 arranged in a circumferential array, the scraping plate 22 is of an arc-shaped plate structure, the axis of the scraping plate coincides with the rotating shaft of the discharge wheel 21, and each section of the distribution plate 212 on the discharge wheel 21 is always provided with a plurality of top ends of the convex tooth parts 213 which are attached to the scraping plate 22 (where "attached" means that the top ends of the convex tooth parts 213 are contacted with the inner wall of the scraping plate 22 or are close to each other without contacting each other, when the top ends of the convex tooth parts 213 are not contacted with the scraping plate 22, only a gap between the top ends of the convex tooth parts 213 and the scraping plate 22 needs to contain particles; when the discharging assembly 2 executes discharging operation, the material cabin 11 and the discharging channel 13 are respectively located at the head end and the tail end. As shown in fig. 12, two sides of the discharge wheel 21 are respectively provided with a circular separating wheel 23, the inner wall of the scraping plate 22 is always attached to a part of the outer circumferential surface of the separating wheel 23 (the attaching meaning is the same as the above attaching meaning), so that a material accommodating cavity for transporting agricultural materials is surrounded by the inward side end surface of the separating wheel 23, the inner wall of the scraping plate 22 and the material accommodating groove 211 on the discharge wheel 21, along with the rotation of the discharge wheel 21, the agricultural materials in the material compartment 11 can be transported to the discharging channel 13 along with the material accommodating cavity and discharged out of the case 1, and other spreading devices of the agricultural machine can spread the agricultural materials discharged by the material distributing device to the ground.

When the discharging assembly 2 is operated, the discharging wheel 21 rotates, the material accommodating groove 211 arranged in the material cabin 11 on the material distribution disc 212 is filled with materials, along with the rotation of the material distribution disc 212, the material accommodating groove 211 filled with the materials enters the material scraping plate 22 from the head end of the material scraping plate 22, and the material scraping plate 22 scrapes the outer side of the material accommodating groove 211 flat, so that the amount of agricultural materials accommodated in the material accommodating groove 211 is a fixed numerical value (actually, small deviation exists). When the material containing groove 211 filled with the material is rotated out of the scraping plate 22 from the tail end of the scraping plate 22, the agricultural material in the material containing groove 211 falls to the discharging channel 13 to realize one-time discharging due to the action of gravity.

The discharge wheels 21 of the multi-channel discharger for seed metering and the multi-channel discharger for fertilizer metering are different in structure.

As shown in fig. 7, which is a structural diagram of a discharging wheel 21 for discharging fertilizer, a plurality of material accommodating grooves 211 are arranged on the circumferential array of the periphery of the discharging wheel 21, and when the discharging wheel 21 rotates, the discharging wheel 21 can continuously convey the fertilizer in the material compartment 11 to the discharging channel 13.

As shown in fig. 8, which is a structural diagram of a discharging wheel 21 for seed metering, the discharging wheel 21 is composed of a plurality of segments of distribution discs 212 coaxially arranged, a plurality of raised tooth portions 213 arranged in a circumferential array are formed on the periphery of each segment of distribution disc 212, and a material accommodating groove 211 is formed between two adjacent raised tooth portions 213; every two adjacent sections of the distributing discs 212 are staggered by a set angle, so that the material accommodating grooves 211 on the two adjacent sections of the distributing discs 212 are staggered. In this embodiment, the discharge wheel 21 is composed of two distribution discs 212, and if each distribution disc 212 has N raised tooth portions 213 on the periphery, the two distribution discs 212 are staggered by 360 °/N, so that the raised tooth portions 213 of one distribution disc 212 are located at the material accommodating grooves 211 of the other distribution disc 212 when viewed in the axial direction of the discharge wheel 21. The materials discharged from the multiple material distribution discs 212 of the same discharge wheel 21 all enter the same discharging channel 13 corresponding to the discharge wheel 21. For the same section of the material distribution disc 212, due to the existence of the convex tooth part 213, an interval is formed between every two times of material distribution, but a material distribution wheel structure shown in the attached drawing 8 is adopted, because the material distribution wheel 21 comprises two sections of the material distribution discs 212, the material accommodating grooves 211 of the two sections of the material distribution discs 212 are arranged in a staggered manner, the material distribution processes of the two sections of the material distribution discs 212 are alternately carried out, the material distribution process of one section of the material distribution disc 212 is carried out in the material distribution interval time of the other section of the material distribution disc, so that the two sections of the material distribution discs 212 alternately distribute materials to the same material distribution channel 13, the material distribution process is. The operating principle of the discharge wheel 21 determines that the amount of the material discharged in the discharge process is consistent and the operation is stable, and meanwhile, due to the continuity of the discharge process, the flow of the material discharged integrally by the discharge wheel 21 is stable, and the fluctuation is small.

Preferably, for the discharge wheel 21 for seed metering, the edge of one side of each protruding tooth part 213 on one section of the distribution disc 212, which is close to the other section of the distribution disc 212, in two adjacent sections of the distribution discs 212 has a chamfer 214. The chamfer 214 is arranged to form a V-shaped ring groove for communicating all the material accommodating grooves 211 between the two material distributing discs 212, so that agricultural materials are always discharged to the discharging channel 13 when the material distributing discs 212 rotate, and the continuity of discharging can be further ensured. If the material accommodating grooves 211 of the material distribution discs 212 on the same discharge wheel 21 are arranged independently, the material distribution spaces can be compensated by the alternate discharge of the material distribution discs 212 when the discharge wheel 21 rotates, but the flow of the material discharged by the whole discharge wheel 21 still has large fluctuation; and make the material containing groove 211 of all minute charging trays 212 communicate each other, can make the volatility of the whole discharge material's of relief wheel 21 flow greatly reduced, the material flow remains stable, can promote the homogeneity of the agricultural machine who carries this feed divider greatly and scatter the material.

When the plowing work is actually performed and plowed to the edge of the field, the number of remaining uncultivated roads is generally smaller than the number of groups of the discharging assemblies 2, and therefore, it is necessary to close the discharging assemblies 2 which are not used to continue the plowing work on the uncultivated roads.

In order to make the above-mentioned discharge assembly 2 closable, said scraper plate 22 is movable around its central axis to switch between a blocking condition and an operating condition; as shown in fig. 13 and fig. 10, in the blocking state, the scraper plate 22 covers the portion of the discharge wheel 21, which is disposed in the material accommodating groove 211, so that the agricultural material in the material cabin 11 cannot enter the material accommodating groove 211; as shown in fig. 12 and fig. 9, in an operating state, the material accommodating groove 211 of the discharging wheel 21 can take the agricultural material from the material cabin 11 and release the agricultural material to the discharging channel 13 at the tail end of the scraper 22. In this way, by adjusting the position of the scraper 22, the material distribution disc 212 can cut off the connection between the material discharge wheel 21 and the material compartment 11, so that the material distribution device can be switched between a material discharge state (the material discharge wheel 21 performs material discharge operation) and an idle state (the material discharge wheel 21 idles, does not perform material discharge operation). In this embodiment, each scraper 22 is connected to a handle 24, and a user can pull the scraper 22 to move through the handle 24, so that the scraper 22 switches states. In this embodiment, the chassis 1 has an arc-shaped portion, a plurality of arc-shaped sliding grooves 19 are linearly arranged on the arc-shaped portion in an array, a driving end 221 is formed on the scraper 22, the driving end 221 passes through the arc-shaped sliding grooves 19, the handle 24 is hinged to an end portion of the driving end 221, and a body portion of the scraper 22 and the handle 24 are respectively disposed on an inner side and an outer side of the chassis 1, so that a user can pull the scraper 22 from the outside of the chassis 1 to switch states.

The handle 24 can rotate relative to the driving end 221 to tighten and fix the scraper plate 22 or to move the scraper plate 22 relative to the chassis body 11. In particular, the side edge of the handle 24 is provided with a profile, as shown in fig. 11, which is provided with a release arc segment 241 corresponding to the released state and a tightening arc segment 242 corresponding to the tightened state, and a spacing convex portion 243 is provided between the release arc segment 241 and the tightening arc segment 242. With respect to the center of rotation of both the handle 24 and the drive end 221, a point on the tightening arc 242 is farther from the center of rotation than a point on the loosening arc 241, while the top end of the spacing projection 243 is farthest from the center of rotation (as compared to the point on the tightening arc 242 and the point on the loosening arc 241); when the tensioning arc-shaped segment 242 abuts against the outer wall of the chassis body 11, since the point on the tensioning arc-shaped segment 242 is farther from the rotation center, the part of the driving end 221 which is pulled out to the outer side of the chassis body 11 is more, so that the outer wall of the scraping plate 22 abuts against the inner wall of the chassis body 11, and the scraping plate 22 can be fixed relative to the chassis body 11 by the friction action of the two; when the release arc 241 faces the outer wall of the chassis body 11, since the point on the tightening arc 242 is closer to the rotation center, the part of the driving end 221 that is pulled out to the outside of the chassis body 11 is less, and at this time, the outer wall of the scraper 22 and the inner wall of the chassis body 11 are in a non-close state, and the friction between the two is small, so that the scraper 22 can move relative to the chassis body 11 by pulling the handle 24. The spacing convex part 243 is arranged between the loosening arc surface section 241 and the tightening arc surface section 242, and the top part of the spacing convex part is farthest away from the rotating center, so that a user needs to exert a large force to enable the handle 24 to switch the state, the handle 24 cannot rotate by itself to enable the scraping plate 22 to loosen under the state that the scraping plate 22 is tightened and fixed, and the scraping plate 22 can be effectively prevented from loosening or position creeping under the action of mechanical vibration.

The air blown into the air chamber 12 by the blower 50 can enter the blanking pipe 7 to assist the agricultural material to be blanked, specifically, as shown in fig. 4 and 5, the air chamber 12 is provided with an air outlet 18, and the material outlet and the air outlet 18 are respectively disposed at two sides of the lower end of the partition 17. The air outlet 18 is long and extends along the left-right direction of the case body 1, all the blanking tubes 7 are also arranged in a linear array in the extending direction of the air outlet 18, the air flow blown by the air blower 50 is along the extending direction of the air outlet 18, and the air inlet direction of the pipe orifice of each blanking tube 7 is perpendicular to the extending direction of the air outlet 18, so that the air flow blown into the air cabin 12 by the air blower 50 cannot directly enter any blanking tube 7, the air pressure in the air cabin 12 can be increased, the air in the air cabin 12 is discharged to each blanking tube 7 through the air outlet 18, the flow velocity of the air flow discharged into each blanking tube 7 can be ensured to be uniform, the blanking speed of each blanking tube 7 is ensured to be uniform, and the uniformity of material spreading and material removing can be ensured.

Because the baffle 17 is arranged obliquely, the included angle between the baffle 17 and the bottom plate at the lower end of the air cabin 12 is an acute angle, and the air outlet 18 is positioned at the acute angle, so that the baffle 17 has a guiding effect on the air flow overflowing out of the air outlet 18, the air flow direction is consistent with the air inlet direction of the inlet of each blanking tube 7, and the air flow overflowing out of the air outlet 18 can smoothly enter each blanking tube 7 to assist blanking.

In addition, each partition unit 14 has a part extending to the other side of the partition 17, and the part extending to the other side of the partition 17 is disposed at the position of the air outlet 18, so as to play a role in guiding the flow, thereby effectively preventing the phenomenon of turbulence of the air flow overflowing to the outside of the air outlet 18 due to the longer air outlet 18, and enabling the air flow overflowing to the outside of the air outlet 18 to enter each blanking pipe 7 more smoothly.

The lower end of each blanking channel 13 is connected with a transition hopper 71, the transition hopper 71 is connected with the blanking pipe 7, and agricultural materials falling from the blanking channels 13 and airflow overflowing from the air outlet 18 enter the blanking pipe 7 through the transition hoppers 71.

The discharge wheels 21 of all the discharge assemblies 2 are driven to rotate by the same drive unit 4.

In a first embodiment, as shown in fig. 6, the driving unit 4 comprises a ground wheel 41 which is passively rotated by contacting the ground, and the ground wheel 41 is in driving connection with the discharging wheel 21 through a flexible shaft 43. The relation between the rotation angle of the discharge wheel 21 and the displacement of the agricultural cultivation machine can be established through the land wheel 41, the agricultural cultivation machine generates a certain displacement, the discharge wheel 21 rotates by a corresponding angle and discharges materials with corresponding quality, and the uniformity of the materials for sowing and removing can be ensured without accurate control.

In a second embodiment, as shown in fig. 3, the driving unit 4 comprises a motor 42, and the motor 42 is in driving connection with the discharging wheel 21; the motor 42 is connected with the controller, the controller is further connected with a detector for measuring the speed or displacement of the agricultural cultivation machine, in the embodiment, the detector is a GPS module, the controller can calculate the running speed of the agricultural machine through implementation position information acquired by the GPS module, the controller can calculate the rotating speed of the discharge wheel 21 according to the running speed of the agricultural machine and the discharge amount of all the discharge assemblies 2 in a unit period, and accordingly the motor 42 is controlled to operate, so that the discharge speed of the discharge assemblies 2 is matched with the moving speed of the agricultural cultivation machine, and uniform agricultural material spreading is achieved.

In order to calculate the target rotating speed of the motor 42, the unit-cycle discharge amount of all the discharge assemblies 2 needs to be known, and since the discharge assemblies 2 are different from each other in the unit-cycle discharge amount of different agricultural materials, the unit-cycle discharge amount of all the discharge assemblies 2 needs to be calibrated for each agricultural material, the case 1 is provided with the material leading-out assembly 3 for weighing the material discharged by the discharge assemblies 2, the material leading-out assembly 3 can be used for leading out the agricultural material falling from the discharge channel 13 to the outside of the case 1, so that the user can set the number cycle by operating all the control discharge assemblies 2 and obtain the material led out by the material leading-out assembly 3 for metering, and the unit-cycle discharge amount of all the discharge assemblies 2 can be calculated.

As shown in fig. 14, the material guiding assembly 3 includes an intercepting unit 32 and a state switching structure 31, where the intercepting unit 32 can be switched between an idle state and an intercepting state, and the state switching structure 31 is used for switching the intercepting unit 32 to the state; as shown in fig. 12, in the idle state, the material can fall from the blanking channel 13 and be thrown to the target position (i.e. enter the blanking pipe 7 and fall along the blanking pipe 7 and be thrown to the ground); in the intercepting state, as shown in fig. 5, the intercepting unit 32 intercepts all the feeding channels 13 and guides the materials passing through the feeding channels 13 to the outside of each feeding channel 13. That is, under the interception state, the interception unit 32 blocks the transmission path between the discharging channel 13 and the discharging pipe, and makes the material flow out of the discharging channel 13, and the user can set the receiving unit to receive the material flowing out of all the discharging channels 13 at one time without collecting and summarizing the material from each discharging channel 13 in sequence, thereby greatly facilitating the material collection work. Because the position that unloading passageway 13 was located is higher, consequently carry out material collection comparatively convenient.

Each of the blanking passages 13 has a square cross section, and one side wall of each of the blanking passages 13 has an opening 131. The intercepting units 32 are in a comb-tooth-shaped plate structure, notches are formed in positions corresponding to the separating units 110, and the separating units 110 are embedded into the corresponding notches one by one. When the intercepting unit 32 is in the idle state, the intercepting unit 32 seals the opening 131 to prevent the material from leaking out of the opening 131, when the intercepting unit 32 is in the intercepting state, the intercepting unit 32 is in the inclined state, the end part of the intercepting unit 32 abuts against the side wall opposite to the side wall where the opening 131 is located to completely intercept the material, and the material can be led out by the obliquely arranged intercepting unit 32.

As shown in fig. 14, the state switching structure 31 includes a rotating shaft 311 that is rotatably disposed, and a toggle piece 312 is fixed on the rotating shaft 311; when the intercepting unit 32 is in an idle state, the toggle piece 312 presses one side end face of the intercepting unit 32; when the intercepting unit 32 is in the intercepting state, the toggle piece 312 presses the other side end surface of the intercepting unit 32.

A hand-operated wheel 313 is fixed on the rotating shaft 311, and a plurality of grooves which are circumferentially arrayed are formed in the outer edge of the hand-operated wheel 313 so as to facilitate manual rotation of a user; the state switching structure 31 further includes a fixing member 314 for fixing the rotating shaft 311, in this embodiment, the fixing member 314 is a hand screw, and the hand screw can act on an end of the rotating shaft 311 to fix the rotating shaft 311 in a tightening manner, so that the intercepting unit 32 can be maintained in a certain state.

The discharge per unit period of all the discharge assemblies 2 described above is calculated according to the following formula:

in the formula: q _ calibt: the unit period discharge capacity is g/r;

m _ caliibt: the total amount of samples discharged in a set period of operation of all the discharging assemblies 2 is 3000g in the embodiment;

x: the value of the set period for all the discharge assemblies 2 to operate is 20 cycles in this embodiment.

The target rotation speed of the motor 42 is calculated according to the following equation:

in the formula, n _ current: a target rotational speed of the motor 42 in r/min;

q _ aim: the target discharge amount, which is 9.00 kg/mu in this example;

GPS _ speed: the operating speed of the agricultural cultivation and sowing machine is 4-5 km/h in the embodiment;

b: the operation width is 3m in this embodiment.

According to the above value calculation, the following results can be obtained:

compared with the traditional single discharger in which the flow is adjusted by adjusting the effective length of the discharge groove, the material flow adjusting mode is simple to operate, time can be saved without adjusting each discharge assembly 2 in sequence, and relatively speaking, the discharger disclosed by the invention is not provided with an adjusting device, so that the difficulty of an assembly process is lower, and the cost is saved.

As shown in fig. 16, the rut processing device 9 includes an auger support 91, an auger shaft 92, an auger assembly 93, and a power unit 94.

Wherein the auger shaft 92 is rotatably mounted relative to said auger support 91, the rotation of which is driven by a power unit 94. The power unit 94 includes a hydraulic motor 941, the hydraulic motor 941 is connected to a proportional valve 942 through an oil pipe, the proportional valve 942 is connected to a pressure oil source through an oil pipe, and the pressure oil source includes an oil cylinder and an oil pump. Compared with the traditional motor, the hydraulic motor 941 is more resistant to severe environment, is suitable for the field of plowing and sowing, and has high reliability and low failure rate.

As shown in fig. 19, three rotation support structures are mounted on the auger support 91, and support both ends and the center of the auger shaft 92. The above-described rotation support structure is provided with a bearing, so that not only can the auger shaft 92 smoothly rotate with respect to the auger support 91, but also the auger shaft 92 is effectively supported, which is not bent due to being excessively long.

Two sets of auger assemblies 93 are symmetrically mounted on the left and right sides of the auger shaft 92, and the two sets of auger assemblies 93 are respectively positioned on two sides of the rotation supporting structure in the middle. As shown in fig. 19, each auger assembly 93 comprises two symmetrically arranged spiral portions 931, and the spiral directions of the two spiral portions 931 are opposite; the two spiral portions 931 are spaced apart from each other; each set of the auger assemblies 93 is adjustable in position along the length of the auger shaft 92.

In the above structure, the two sets of auger assemblies 93 are respectively used for processing two wheel tracks generated by a tractor or other traction machinery. For the same auger assembly 93, when in use, the interval between the two spiral parts 931 faces the wheel of the traction machine, and the wheel track pressed out by the wheel of the traction machine is positioned between the two spiral parts 931. In addition, the spiral portion 931 scrapes the ground surface once while pushing the floating soil, so as to perform a primary soil leveling function on the ground. Because the positions of the auger assemblies 93 can be adjusted in the length direction of the auger shaft 92, when the agricultural cultivation machines are pulled by the traction machines of different models, the positions of the two auger assemblies 93 can be adjusted in advance according to the wheel track of the traction machines, so that the middle parts of the auger assemblies 93 are aligned with the wheel track to achieve the best processing effect, the processing effect on the wheel track can be greatly improved, and the auger structure is suitable for the traction machines of different models.

Preferably, the auger shaft 92 corresponds to each auger assembly 93 all is equipped with square shaft section 921, auger assembly 93 includes well pipe portion 932, well pipe portion 932 cover is established on square shaft section 921, just install on the well pipe portion 932 and be used for the tight top the tight screw 933 of top of square shaft section 921 outer wall. When the position of the auger assembly 93 needs to be adjusted, only the jacking screw 933 needs to be loosened and the auger assembly 93 is moved, after the position is adjusted, the jacking screw 933 is screwed down to enable the end part of the jacking screw to prop against the square shaft section 921, and the adjusting device is convenient to adjust, simple in structure and low in implementation cost.

Specifically, as shown in fig. 21, the middle tube part 932 includes a round tube part 9321, and end plates 9322 having a square hole at the center are fixed to both ends of the round tube part 9321; the square hole at end plate 9322 middle part with square shaft section 921 sliding fit, so, well pipe 932 need not set up the quad slit with its whole running through, only relies on the quad slit on two end plates 9322 just can reach the effect of direction and transmission moment of torsion.

In addition, auger shaft 92 comprises two axles of first axle section 922 and second axle section 923, and two shaft drive are connected, and both arrange in the centre respectively rotate supporting structure's both sides, all possess square shaft section 921 on first axle section 922 and the second axle section 923, and two auger assemblies 93 are installed respectively on two axles. This reduces the difficulty in machining and assembling the auger shaft 92.

In a further embodiment, due to different degrees of softness of the soil, the depth of the screw 931 needs to be adjusted to achieve better treatment effect for different degrees of softness. The auger support 91 is rotatably mounted at the front end of the main support 1, and the pitch angle of the auger support 91 relative to the main support 1 can be adjusted by an adjusting mechanism 95.

Specifically, as shown in fig. 20, a handle seat 951 is rotatably mounted on the main support 1, an adjusting handle 952 is rotatably mounted on the handle seat 951, and the adjusting handle 952 has a screw rod portion; the screw feeder support 91 is rotatably provided with a screw sleeve rotating joint 953, and the screw rod part is in thread pair fit with the screw sleeve rotating joint 953. Through this structure, through rocking adjustment handle 952, can make the screw rod portion rotate for swivel nut swivel 953 is close to or keeps away from for the afterbody of adjustment handle 952, in order to realize the regulation to screw feeder support 91 every single move angle. When the soil is softer, the deeper the wheel track extruded by the tractor is, the more the required floating soil is, the lower the auger support 91 needs to be adjusted, and the deeper the soil penetration depth of the spiral part 931 is; conversely, when the soil is harder, the lighter the track the tractor can extrude, the less soil is required, the higher the auger support 91 needs to be adjusted, and the shallower the depth of penetration of the helical portion 931.

As shown in fig. 17 to 18, the soil leveling mechanism 30 includes a soil leveling plate 31, and a front side of the soil leveling plate 31 is tilted upward. The front end of the soil leveling plate 31 is directly connected with the main frame 10, and the flat plate part at the rear end of the soil leveling plate 31 is connected with the main frame 10 through a plurality of triangular pieces 32. The soil leveling plate 31 is of the structure, so that the soil leveling plate 31 can achieve a good soil leveling effect.

The two furrow openers 4 are symmetrically arranged at the lower end of the soil leveling plate 31; as shown in fig. 4, the flat soil plate 31 has a recessed portion recessed upward in the middle thereof, the recessed portion extending in the left-right direction of the flat soil plate 31, and the furrow opener 4 has an insertion portion 41 inserted into the recessed portion. Thus, the furrow opener 4 is firmly and firmly installed, and the installation position of the furrow opener cannot move forwards and backwards when the ditch is opened.

Preferably, as shown in fig. 23, two side guards 61 are symmetrically arranged on two sides of the main frame 10, and the side guards 61 are mounted on the main frame 10 by means of a foot support 62; the footrest member 62 is T-shaped, and the footrest member 62 is detachable with respect to the main frame 10. Specifically, the foot supporting member 62 is provided with an inserting portion, the inserting portion is inserted into a preformed hole on the main frame 10, and the inserting portion is fixed relative to the main frame 10 through a bolt 63. When the soil leveling, seeding and fertilizing device executes operation, the foot supporting pieces 62 are reversely inserted on the main frame 10, and the foot supporting pieces 62 are in a regular T shape and are completely separated from the ground; when the soil leveling, seeding and fertilizing device is in an idle state, in order to clean the operation assembly conveniently, the foot supporting piece 62 is inserted on the main frame 10, and the foot supporting piece 62 is in an inverted T shape and supports the whole soil leveling, seeding and fertilizing device. The two side baffles 61 can gather soil between the two side baffles 61 when the flat soil seeding and fertilizing device executes operation, and the soil is prevented from being pushed to the adjacent area which is already ploughed and sowed when the flat soil seeding and fertilizing device supports operation.

As shown in fig. 19 and 24, the floating connection assembly 8 includes a transition frame 82, a resilient floating mechanism 83, a tension spring 84, and an adjusting bolt 85.

The tractor frame 20 has a connection structure for connecting a wheeled tractor; here, the connection structure includes three suspension pins 81 arranged in a triangular configuration, one suspension pin 81 is installed at the upper end of the traction frame 20, two suspension pins 81 are installed at the lower end of the traction frame 20, and the two suspension pins 81 are arranged in bilateral symmetry. The rear end of a wheeled tractor such as a tractor is provided with a three-point suspension device (not shown in the figure), the three-point suspension device can be driven by a hydraulic lifting oil cylinder to lift relative to the wheeled tractor, three suspension pins 81 are arranged on the three-point suspension device in a plugging mode, and thus the hydraulic lifting oil cylinder can drive the traction frame 20 to lift so as to be convenient for the disassembly and assembly of the traction frame 20. The tractor frame 20 is fixed relative to the wheeled tractor so that the tractor frame 20 will have a large pitch with the pitching motion of the wheeled tractor.

The transition frame 82 is connected with the traction frame 20 through an elastic floating mechanism 83, and the elastic floating mechanism 83 enables the transition frame 82 to elastically float up and down on the rear side of the traction frame 20. The main frame 10 is used for mounting working components and can elastically swing left and right relative to the transition frame 82.

Through the structure, the main frame 10 serves as the tail end of the frame for installing the operation components, can elastically float up and down and elastically swing left and right relative to the traction frame 20 connected with the tractor, can effectively and automatically adjust the relative pose between the main frame 10 and the traction frame 20 in real time, and filters the jolt of the traction frame 20, so that the operation components on the main frame 10 are attached to the ground in real time.

Specifically, the elastic floating mechanism 83 includes a link mechanism and an elastic connector, and the transition frame 82 is connected to the traction frame 20 through the link mechanism. The link mechanism includes a first rod 831 and a second rod 832, the transition frame 82 has a third rod 821 fixed relative to its body, the traction frame 20 has a fourth rod 812 fixed relative to its body, both ends of the first rod 831 and the second rod 832 are respectively hinged on the fourth rod 812 and the third rod 821, the four of the first rod 831, the second rod 832, the third rod 821 and the fourth rod 812 form a four-bar mechanism, and preferably, the first rod 831 and the second rod 832 are equal in length and always parallel to each other, four hinge points at both ends of the two rods form four vertices of a parallelogram, so that the four-bar mechanism is a parallelogram, when the transition frame 82 floats up and down relative to the traction frame 20, due to the characteristics of the parallelogram four-bar mechanism, the transition frame 82 is always translated relative to the traction frame 20 without angular deflection, stability of transition frame 82 and other components on transition frame 82 during the up and down floating process may be maintained.

The elastic connector is disposed between the traction frame 20 and the first rod 831, and enables the first rod 831 to have a downward swinging trend, and the downward swinging trend of the first rod 831 enables the transition frame 82 and the main frame 10 mounted on the transition frame 82 to have a downward moving trend.

Specifically, the elastic connector includes a spring cylinder 833, a tension rod 834, and a compression spring 836; a first end of the pull rod 834 is disposed within the spring cylinder 833, and the pressure spring 836 is disposed between the first end and a first cylinder end of the spring cylinder 833; the second end of the pull rod 834 penetrates out of the first cylinder end of the spring cylinder 833; the second end of the pull rod 834 is hinged to the first rod 831, and the second cylinder end of the spring cylinder 833 is hinged to the traction frame 20. With the above-described structure, an elastic tensile force can be formed between the first lever 831 and the traction frame 20 by the compression spring 836, so that the first lever 831 has a downward swinging movement tendency with respect to the traction frame 20.

In addition, because the soft degree of different ground is different, in order to adapt to the ground of different soft degree, need adjust the elasticity of transition frame 82 and float the range, the more effective method is the rigidity of adjusting pressure spring 836, and traditional structure needs to change the pressure spring 836 of different rigidity in order to adjust the elasticity and float the range. In the invention, the traction frame 20 is arranged on the hydraulic lifting cylinder, and the height of the traction frame 20 is adjusted by driving the hydraulic lifting cylinder to operate, so that the pre-compression amount of the pressure spring 836 can be adjusted. Specifically, the higher the traction frame 20 is lifted by the hydraulic lifting cylinder, since the main frame 10 has the self weight and cannot lift along with the self weight, the four-bar mechanism deforms, the relative position of the pull rod 834 and the spring cylinder 833 changes, the pre-compression amount of the compression spring 836 becomes large, the rigidity of the compression spring 836 becomes large, the elastic floating amplitude of the transition frame 82 relative to the traction frame 20 becomes small, and generally, the transition frame 82 can be lifted to be higher for a ground with small softness to reduce the elastic floating amplitude. Conversely, when the hydraulic lifting cylinder lowers the traction frame 20, the four-bar mechanism deforms reversely, the relative position of the pull rod 834 and the spring cylinder 833 changes, so that the pre-compression amount of the compression spring 836 decreases, the rigidity of the compression spring 836 decreases, the elastic floating amplitude of the transition frame 82 relative to the traction frame 20 increases, and the transition frame 82 can be lifted to be higher to increase the elastic floating amplitude generally for a ground with larger softness.

Through the structure, the elastic floating amplitude can be conveniently adjusted by using the hydraulic lifting oil cylinder, and an adjusting mechanism or springs with different rigidities do not need to be additionally arranged. As can be seen from the above description, when the pre-compression amount of the compression spring 836 is changed, the relative position between the draw rod 834 and the spring cylinder 833 is changed, and for this reason, in order to facilitate the user to know the real-time elastic floating amplitude condition, the elastic connector further includes a scale 835; the scale 835 has a hinged end 8351, an axially extending end 8352, and an indicating end 8353; the hinged end 8351 is coaxially hinged with the second end of the pull rod 834; the axially extending end 8352 extends axially along the tension rod 834; the outer wall of the spring cylinder 833 is provided with scales, and the indicating end 8353 is used for indicating the scales. As shown in fig. 25, the indicating end 8353 is annular and is sleeved on the periphery of the spring cylinder 833, the inner side of the annular indicating end 8353 has an indicating protrusion extending toward the center thereof, two supporting protrusions are symmetrically arranged on two sides of the indicating protrusion, and the two supporting protrusions contact with the outer wall of the spring cylinder 833 to reduce friction. By setting the scale 835, the user can conveniently read the scale of the corresponding position of the indicating end 8353 to know whether the current elastic floating amplitude corresponds to the softness of the ground.

The middle of the main frame 10 is rotatably connected with the middle of the transition frame 82, and at least one pair of tension springs 84 are symmetrically arranged between the main frame and the transition frame on two sides of the rotation axis. In this manner, the main frame 10 can elastically swing left and right with respect to the transition frame 82.

Preferably, the pretension amount of the tension spring 84 is adjustable, one end of the tension spring 84 is connected to the main frame 10 by an adjusting bolt 85, and the axial position of the adjusting bolt 85 is adjustable relative to the main frame 10. In this way, the amount of pretension of the tension spring 84 changes due to the change in the axial position of the adjusting bolt 85, and the amplitude of the leftward and rightward elastic oscillation changes. For the soil with higher softness, the pre-stretching amount can be reduced, and for the soil with lower softness, the pre-stretching amount can be increased.

The utility model discloses a pneumatic paddy field fertilizing and seeding machine is provided with the main frame and pulls the frame, is provided with unsteady coupling assembling in order to establish the unsteady connection relation between the two between the main frame and the frame of pulling, but pulls the frame and connect the tractor, and the main frame can be carried out the profile modeling and float the operation subassembly that makes its installation and effectively act on the paddy field to can carry out wheel rut processing, flat soil, fluting, broadcast kind, fertilization. The utility model discloses a pneumatic paddy field fertilizing and seeding machine can use with ordinary wheeled tractor is supporting, uses with low costsly, and can realize efficient seeding fertilization operation.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims (10)

1. The utility model provides a pneumatic paddy field fertilizing and seeding machine which characterized in that, it includes:

a traction frame (20) which is provided with a connecting part for connecting the wheel type tractor and is provided with two groups of multi-channel discharging devices for respectively discharging seeds and fertilizer; each group of the multi-channel discharger is connected with a plurality of discharging pipes (7), and the multi-channel discharger can discharge seeds or fertilizers into the discharging pipes (7) and introduce airflow into the discharging pipes (7);

the main frame (10) is provided with an operation assembly, and the operation assembly sequentially comprises a wheel track processing device (9), a soil leveling mechanism (30) and a seeding and fertilizing assembly (5) from front to back; the seeding and fertilizing assembly (5) comprises a plurality of groups of feeding assemblies arranged in a left-right linear array, and each group of feeding assemblies comprises a seed feeding assembly and a fertilizing assembly; the seed feeding assembly and the fertilizer feeding assembly are respectively connected with the discharging pipe (7) for seeding and the discharging pipe (7) for fertilizing; and

a floating connection assembly (8) connecting the traction frame (20) and the main frame (10) so that the main frame (10) can elastically float up and down and elastically swing left and right relative to the traction frame (20).

2. The pneumatic paddy field fertilizing and seeding machine as claimed in claim 1, wherein the seed feeding assembly and the fertilizer feeding assembly included in each group of the feeding assemblies are arranged in parallel;

the seed throwing assembly comprises a seed groove scribing block (51) and a seed sowing unit (52); the fertilizer feeding assembly comprises a fertilizer groove dividing block (53) and a fertilizer feeding unit (55);

the upper ends of the seeding unit (52) and the fertilizing unit (55) are respectively connected with the seeding pipe (7) for seeding and the seeding pipe (7) for fertilizing.

3. The pneumatic paddy field fertilizing and seeding machine as claimed in claim 2, characterized in that the rear end of the fertilizing groove block (53) is provided with a fertilizing groove widening unit (54), and the fertilizing groove block (53) and the fertilizing groove widening unit (54) can be matched to open a fertilizing groove with a narrow top and a wide bottom on the ground.

4. The pneumatic paddy field fertilizing and seeding machine as claimed in claim 1, characterized in that the floating connection assembly (8) comprises a transition frame (82), the transition frame (82) is connected with the traction frame (20) through a resilient floating mechanism (83), the resilient floating mechanism (83) enables the transition frame (82) to move up and down resiliently at the rear side of the traction frame (20); the main frame (10) can elastically swing left and right relative to the transition frame (82).

5. The pneumatic paddy field fertilizing and seeding machine as claimed in claim 1, characterized in that the multi-channel discharger comprises a case (1), the case (1) is provided with a material cabin (11), a wind cabin (12) and a plurality of discharging channels (13);

a plurality of groups of discharging assemblies (2) are mounted in the case (1), and the discharging assemblies (2) can obtain seeds or fertilizers from the material cabin (11) and discharge the seeds or fertilizers into the discharging channel (13);

a blower (50) for blowing air flow into the air cabin (12) is installed on the case (1), and the air cabin (12) is provided with an air outlet (18);

the blanking pipe (7) can receive seeds or fertilizers falling from the blanking channel (13) and airflow overflowing from the air outlet (18).

6. A pneumatic paddy field fertilizing and seeding machine as claimed in claim 5, characterized in that the main frame (10) is rotatably mounted with ground wheels (41), the ground wheels (41) establishing a driving relationship with the discharging assembly (2) through flexible shafts (43).

7. The pneumatic paddy field fertilizing and seeding machine as claimed in claim 5, characterized in that the discharging assembly (2) is driven by a motor (42) to operate, the motor (42) is connected with a controller, and the controller is further connected with a detector for detecting the overall speed or the operation displacement of the pneumatic paddy field fertilizing and seeding machine.

8. The pneumatic paddy field fertilizing and seeding machine as claimed in claim 5, characterized in that each set of discharging assemblies (2) can be opened and closed independently.

9. The pneumatic paddy field fertilizing and seeding machine as claimed in claim 1, characterized in that the working assembly further comprises a furrow opener (40).

10. A pneumatic paddy field fertilizing and seeding machine as claimed in claim 1, characterized in that the wheel rutting treatment device (9) comprises an auger shaft (92) and an auger assembly (93); the auger assembly (93) is adjustable in position in the length direction of the auger shaft (92); the auger assembly (93) is provided with two helical portions (931) having opposite helical directions.

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