CN216087568U

CN216087568U - Small-size semi-automatic agricultural seeding device that turns over

Info

Publication number: CN216087568U
Application number: CN202122648177.0U
Authority: CN
Inventors: 陈强国; 王红鹃; 吴玉琴; 赵永霞
Original assignee: Minle Aoxing Agricultural Technology Co ltd
Current assignee: Gansu Rennong Agricultural Development Co ltd
Priority date: 2021-11-01
Filing date: 2021-11-01
Publication date: 2022-03-22
Anticipated expiration: 2031-11-01

Abstract

The utility model provides a small semi-automatic agricultural plowing and seeding device, belonging to the field of agricultural mechanical equipment.A fixed frame is provided with a seeding groove; the seeding box is arranged in the seeding groove; negative pressure adsorption apparatus constructs, negative pressure adsorption apparatus constructs including sucking disc and negative pressure wind gap, the sucking disc sets up in the seeding incasement, it is used for adsorbing the seed to have seted up a plurality of suction holes on the sucking disc, through two spring and fixed block between the cooperation of elasticity down, the realization pushes down the negative pressure wind gap, it hugs closely to increase to seal between negative pressure wind gap and the sucking disc, negative pressure machine sets up on the seeding case, through the pipe connection between negative pressure machine and the negative pressure wind gap, negative pressure machine carries out the negative pressure through the pipeline to the negative pressure wind gap and inhales and provide negative pressure suction for the sucking disc, accomplish and adsorb the seed fast, realize the accurate ration of seed, and the seed distributes evenly, the later stage intertillage of being convenient for is weeded, finally realize the quick seeding of integration, the seed distributes evenly, the earthing depth is unified, the intertillage weed is convenient for in the later stage.

Description

Small-size semi-automatic agricultural seeding device that turns over

Technical Field

The utility model belongs to the field of agricultural mechanical equipment, and particularly relates to a small semi-automatic agricultural plowing and seeding device.

Background

The plowing refers to the process of leveling and loosening the soil by shoveling, scattering, dredging and the like, is the most preliminary process for farmers to cultivate, can lead seeds to breathe and grow easily in the soil, is also a cultivation method which is used for thousands of years in south and north China and is also the only unified cultivation method in south and north China.

The ploughing in-process needs to turn over earlier and sow last earthing, the broadcast sowing is about to spill the seed evenly in the field surface, according to the different characteristics of crop and local concrete condition, can earthing or not earthing after the broadcast sowing, north ploughing is because the large tracts of land is concentrated, the mechanized operation of being convenient for, south ploughing is because the decentralization, the earth's surface height is different, lead to cultivated land area little, the large-scale mechanized operation of being not convenient for, can not carry out integration quick seeding, manual operation is used to the majority, it is simple and convenient to save labour, but the seed is difficult for evenly distributing, the earthing depth is not uniform, inconvenient intertillage weeding in later stage.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a small semi-automatic agricultural plowing and seeding device, and aims to solve the problems that the plowing area is small due to the limitation of the decentralization of the plowed land in the south and the difference of the ground surface height, the large-scale mechanical operation is limited, the integrated rapid seeding cannot be carried out, the seeds for manual seeding are not easy to be uniformly distributed, the covering soil depth is different, and the intertillage and weeding are inconvenient in the later period.

In order to achieve the purpose, the utility model provides the following technical scheme:

a small semi-automatic agricultural tilling and seeding device comprising:

the fixed frame is provided with a seeding groove;

the seeding box is arranged in the seeding groove;

the negative pressure adsorption mechanism comprises a sucker and a negative pressure air port, the sucker is arranged in the sowing box and provided with a plurality of suction holes for adsorbing seeds, the negative pressure air port is rotatably connected into the sowing box through a hinge shaft, and the sucker is matched with the negative pressure air port for adsorbing the seeds;

the telescopic mechanism is arranged on the fixed frame and comprises a sliding block, and the telescopic mechanism is fixedly connected with the sowing box through the sliding block and used for pushing the sowing box to reciprocate;

the pressure transformation mechanism is arranged on the sowing box and used for breaking a negative pressure state to realize sowing; and

the bottom of the fixing frame is provided with a seed tray for storing seeds.

As a preferred scheme of the utility model, the negative pressure adsorption mechanism further comprises a negative pressure machine, two telescopic rods, two downward pressing springs and two fixed blocks, wherein the two telescopic rods are fixedly connected to the top of the negative pressure air port, the circumferential surfaces of the two telescopic rods are sequentially sleeved with the downward pressing springs and the fixed blocks from bottom to top, the two fixed blocks are both fixedly connected to the inner wall of the sowing box, the negative pressure machine is arranged on the sowing box, and the negative pressure machine is connected with the negative pressure air port through a pipeline.

As a preferred scheme of the utility model, the telescopic mechanism comprises a sliding block, a three-phase motor, a screw rod, two sliding grooves and limiting blocks, the three-phase motor is fixedly connected to the fixed frame, the control panel is fixedly connected to the output end of the three-phase motor, the three-phase motor is arranged in the sowing groove, the sliding block is sleeved on the circumferential surface of the screw rod, the two sliding grooves are arranged on the inner wall of the sowing groove, the two limiting blocks are respectively inserted in the two sliding grooves, and the two limiting blocks are both fixedly connected to the sowing box.

As a preferable scheme of the present invention, the transformation mechanism includes two sets of elastic members and a plurality of communication holes, each set of elastic members includes an insertion post, a lifting block, a return spring, an insertion groove, and a plurality of rollers, the lifting block is fixedly connected to the negative pressure air port, the insertion groove is provided on the lifting block, the insertion post is provided on the sowing box, one end of the lifting block is inserted into the insertion groove, the plurality of rollers are rotatably connected to the insertion post in the insertion groove, the return spring is sleeved on a circumferential surface of the other end of the insertion post, and the plurality of communication holes are provided on the sowing box.

As a preferred scheme of the utility model, the fixing frame is provided with a holding tank, a driving motor is arranged in the holding tank, the output end of the driving motor is fixedly connected with a driving gear, the fixing frame is provided with a soil turning roller, the soil turning roller is provided with a driven gear, and the circumferential surfaces of the driving gear and the driven gear are sleeved with gear belts.

As a preferable scheme of the present invention, four wheels are fixedly connected to the fixing frame.

As a preferable scheme of the utility model, the bottom of the seed tray is fixedly connected with a scraper which corresponds to the soil turning roller.

As a preferable scheme of the utility model, a battery is fixedly connected to the upper part of the sowing box, the battery is respectively and electrically connected with the negative pressure machine, the driving motor, the three-phase motor and the four wheels, and the control panel is connected with the battery through an elastic control line.

Compared with the prior art, the utility model has the beneficial effects that:

1. in this scheme, through two spring and the fixed cover between elastic fit down, realize pushing down the negative pressure wind gap, increase and seal between negative pressure wind gap and the sucking disc and hug closely, the negative pressure machine sets up on the seeding case, through the pipe connection between negative pressure machine and the negative pressure wind gap, the negative pressure machine carries out the negative pressure through the pipeline to the negative pressure wind gap and inhales for the sucking disc provides negative pressure suction, accomplish and adsorb the seed fast, realize the accurate ration of seed, and the seed distributes evenly, the later stage intertillage of being convenient for is weeded.

2. In this scheme, insert inserting of post through two, promote two lifting pieces and upwards rotate the negative pressure wind gap, when pivoted negative pressure wind gap highly is higher than the intercommunicating pore, destroy the negative pressure state between negative pressure wind gap and the sucking disc, make the adsorbed seed fall and sow on the sucking disc, realize quick seeding.

3. In this scheme, the control panel is connected with the battery through the elasticity control line, through the start-up and the closing of the steerable negative pressure machine of control panel, driving motor, three-phase motor, rotates through the direction of the steerable four wheels of control panel, realizes controlling means's steering, simplifies the operation mode of this device, reduces the operation degree of difficulty.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a top perspective view of the present invention;

FIG. 2 is a bottom perspective view of the present invention;

FIG. 3 is an exploded view of the structure of the present invention;

FIG. 4 is an exploded view of the disseminator of the present invention;

FIG. 5 is a cross-sectional view of the disseminator of the present invention;

figure 6 is an exploded view of the plowing module of the present invention;

fig. 7 is an internal structure view of the seeder of the present invention.

In the figure: 1. a fixed mount; 2. a sowing groove; 3. a sliding groove; 4. a seeding box; 5. a slider; 6. a negative pressure machine; 7. accommodating grooves; 8. a drive motor; 9. a wheel; 10. inserting the groove; 11. a control panel; 12. a three-phase motor; 13. a screw rod; 14. a battery; 15. a seed plate; 16. a squeegee; 17. a suction cup; 18. a soil turning roller; 19. a gear belt; 20. a limiting block; 21. a driving gear; 22. a driven gear; 23. inserting a column; 24. lifting the block; 25. a communicating hole; 26. a telescopic rod; 27. pressing down the spring; 28. a return spring; 29. a roller; 30. fixing a sleeve; 31. and a negative pressure tuyere.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Example 1:

referring to fig. 1-7, a small semi-automatic agricultural tilling and seeding device includes:

the fixed frame 1 is provided with a seeding groove 2.

In this embodiment, the fixing frame 1 is set as necessary, the fixing frame 1 is set to protect the internal mechanism parts of the device, the fixing frame 1 is the main framework of the device, the volume is small, the weight is light, the seeding of small plots is convenient, and the sowing grooves 2 are arranged to accommodate all the mechanisms conveniently.

The seeding box 4 is arranged in the seeding groove 2.

In this embodiment, the sowing box 4 is located between the inner walls of the sowing groove 2 for fixing a plurality of mechanisms.

Negative pressure adsorption apparatus constructs, negative pressure adsorption apparatus constructs including sucking disc 17 and negative pressure wind gap 31, and sucking disc 17 sets up in seeding case 4, has seted up a plurality of suction holes on sucking disc 17 and is used for adsorbing the seed, and driving gear 21 rotates through the hinge and connects in seeding case 4, and sucking disc 17 and negative pressure wind gap 31 cooperate and are used for realizing adsorbing the seed.

In this embodiment, sucking disc 17 fixed connection is on sowing 4 inner walls of case, it is used for adsorbing the seed to have seted up a plurality of suction holes on sucking disc 17, negative pressure wind gap 31 rotates through the hinge and connects on sowing 4 inner walls of case, make negative pressure wind gap 31 rotate in sowing 4 of case, closely laminate between sucking disc 17 and the negative pressure wind gap 31, it looks to be located the upside of kind of dish 15 when sucking disc 17, make things convenient for negative pressure machine 6 to carry out the negative pressure and breathe in the seed that corresponds with suction hole on adsorbing sucking disc 17, realize that the distribution of seed is even.

Telescopic machanism, telescopic machanism set up on mount 1, and telescopic machanism includes slider 5, and telescopic machanism passes through the fixed connection between slider 5 and the seeding case 4 for promote seeding case 4 and carry out reciprocating motion.

In this embodiment, telescopic machanism sets up on mount 1, and slider 5 fixed connection is in the top of sowing case 4, and telescopic machanism passes through the fixed connection between slider 5 and the sowing case 4 for promote sowing case 4 and carry out reciprocating motion, realize carrying out the displacement to sucking disc 17.

The transformation mechanism is arranged on the sowing box 4 and is used for breaking the negative pressure state to realize sowing;

in the present embodiment, taking fig. 4 as an example, the pressure changing mechanism is provided at the front end of the sowing box 4, and the pressure changing mechanism is provided to break the negative pressure state, release the adsorption of the seeds, and realize quick sowing.

The bottom of the fixed frame 1 is provided with a seed tray 15 for storing seeds.

In this embodiment, the seed tray 15 is disposed at the bottom of the fixing frame 1 for storing seeds, and the seed tray 15 corresponds to the suction cup 17 for facilitating the adsorption of the seeds.

Negative pressure adsorption device still includes negative pressure machine 6, two telescopic links 26, two push down spring 27 and two fixed covers 30, two telescopic links 26 fixed connection are in the top of negative pressure wind gap 31, the circumference surface of two telescopic links 26 is overlapped from bottom to top in proper order and is equipped with push down spring 27 and fixed cover 30, the equal fixed connection of two fixed covers 30 is in the inner wall of seeding case 4, negative pressure machine 6 sets up on seeding case 4, pass through the pipe connection between negative pressure machine 6 and the negative pressure wind gap 31.

In this embodiment, two telescopic link 26 fixed connection are in the top of negative pressure wind gap 31, two telescopic links 26 are located seeding case 4, the circumferential surface of two telescopic links 26 is equipped with down spring 27 and fixed cover 30 from bottom to top in proper order, two equal fixed connection of fixed cover 30 are in the inner wall of seeding case 4, through two elastic fit between down spring 27 and the fixed cover 30, the realization pushes down negative pressure wind gap 31, it hugs closely to increase between negative pressure wind gap 31 and the sucking disc 17 sealed, negative pressure machine 6 sets up on seeding case 4, through the pipe connection between negative pressure machine 6 and the negative pressure wind gap 31, negative pressure machine 6 carries out the negative pressure through the pipeline to negative pressure wind gap 31 and inhales for sucking disc 17 provides negative pressure suction, accomplish and adsorb the seed fast, realize the accurate ration of seed, and the seed distributes evenly, be convenient for later stage intertillage weed.

Telescopic machanism still includes three-phase motor 12, lead screw 13, two sliding tray 3 and stopper 20, three-phase motor 12 fixed connection is on mount 1, 11 fixed connection in three-phase motor 12's of control panel output, three-phase motor 12 sets up in seeding groove 2, the circumferential surface of lead screw 13 is located to 5 covers of slider, two sliding tray 3 are seted up on the inner wall of seeding groove 2, two stoppers 20 insert respectively and locate in two sliding tray 3, and two equal fixed connection of stopper 20 are on seeding case 4.

In this embodiment, taking fig. 1 as an example, a three-phase motor 12 is fixedly connected to the rear end of a fixing frame 1, a control board 11 is fixedly connected to the output end of the three-phase motor 12, the three-phase motor 12 is rotatably connected between the front and rear inner walls of a sowing groove 2, a slider 5 is sleeved on the circumferential surface of the lead screw 13, the lead screw 13 is driven by the three-phase motor 12 to rotate, the front and rear movement of the sowing box 4 is pushed through the rolling fit between the lead screw 13 and the slider 5, two sliding grooves 3 are formed on the inner wall of the sowing groove 2, the two sliding grooves 3 are formed to facilitate the sliding of two stoppers 20, the two stoppers 20 are respectively inserted into the two sliding grooves 3, the two stoppers 20 are both fixedly connected to the sowing box 4, the two stoppers 20 slide with respect to the two sliding grooves 3 to limit the movement of the sowing box 4, so as to realize the rapid displacement of the adsorbed seeds, the positioning seeding is convenient, and the seeds are further uniformly distributed.

The transformation mechanism comprises two groups of elastic components and a plurality of communicating holes 25, each group of elastic components comprises an insertion column 23, a lifting block 24, a reset spring 28, an insertion groove 10 and a plurality of idler wheels 29, the lifting block 24 is fixedly connected to a negative pressure air port 31, the insertion groove 10 is arranged on the lifting block 24, the insertion column 23 is arranged on the sowing box 4, one end of the lifting block 24 is inserted into the insertion groove 10, the idler wheels 29 are rotatably connected to the insertion column 23 in the insertion groove 10, the reset spring 28 is sleeved on the circumferential surface of the other end of the insertion column 23, and the communicating holes 25 are arranged on the sowing box 4.

In this embodiment, taking fig. 4 as an example, the lifting block 24 is fixedly connected to the upper end of the negative pressure air port 31, the insertion groove 10 is opened at the front end of the lifting block 24, the lifting block 24 is disposed to facilitate the insertion of the insertion post 23, the insertion post 23 is slidably inserted into the front end of the sowing box 4, the rear end of the lifting block 24 is inserted into the insertion groove 10, the plurality of rollers 29 are rotatably connected to the insertion post 23 in the insertion groove 10, the plurality of rollers 29 are disposed to reduce the friction between the insertion post 23 and the insertion groove 10, the reset spring 28 is sleeved on the circumferential surface of the front end of the insertion post 23, the reset spring 28 is disposed outside the sowing box 4, the plurality of communication holes 25 are opened on the sowing box 4, the plurality of communication holes 25 are distributed at the left and right ends of the sowing box 4, when the sowing box 4 moves forward, the two insertion posts 23 contact the inner wall of the sowing groove 2 and are pressed by the sowing box 4, the two inserting columns 23 are inserted into the two inserting grooves 10 in a backward sliding mode, the two lifting blocks 24 are pushed to enable the negative pressure air opening 31 to rotate upwards through the insertion of the two inserting columns 23, when the rotating negative pressure air opening 31 is higher than the communicating hole 25, the negative pressure state between the negative pressure air opening 31 and the sucking disc 17 is broken, the seeds adsorbed on the sucking disc 17 fall down to be sown, and the rapid sowing is achieved.

Example 2:

holding tank 7 has been seted up on mount 1, is provided with driving motor 8 in the holding tank 7, and driving motor 8 output end fixedly connected with driving gear 21 is provided with the roller 18 that digs on the mount 1, is provided with driven gear 22 on the roller 18 that digs, and the circumference surface cover of driving gear 21 and driven gear 22 is equipped with gear belt 19.

In this embodiment, use fig. 3 as an example, seting up of holding tank 7 is convenient for hold driving motor 8, driving motor 8 sets up to provide power for the rotation of the roller that digs 18, driving motor 8 output end fixedly connected with driving gear 21, the roller that digs 18 rotates through the fixed block and connects in the front end of mount 1, be provided with driven gear 22 on the roller that digs 18, the circumference surface cover of driving gear 21 and driven gear 22 is equipped with gear belt 19, gear belt 19 set up and realize linkage driving gear 21 and driven gear 22, realize the transmission of power, realize ploughing fast the arable land through the rotation of the roller that digs 18.

Four wheels 9 are fixedly connected to the fixed frame 1.

In the present embodiment, taking fig. 1 as an example, four wheels 9 are respectively fixedly connected to the left and right sides of the fixing frame 1, and the four wheels 9 are electric wheels.

A scraper 16 is fixedly connected to the bottom of the seed tray 15, and the scraper 16 corresponds to the soil turning roller 18.

In this embodiment, the scraper 16 is provided to level the ground plowed by the soil turning roller 18 and to cover the sown seeds with soil to make the soil covering depth uniform.

The upper fixedly connected with battery 14 of seeding case 4, battery 14 respectively with negative pressure machine 6, driving motor 8, three-phase motor 12 and four wheel 9 electric connection, control panel 11 is connected with battery 14 through the elasticity control line.

In this embodiment, battery 14 sets up and is used for storing electric power, battery 14 respectively with negative pressure machine 6, driving motor 8, three-phase motor 12 and four wheel 9 electric connection, control panel 11 is connected with battery 14 through the elasticity control line, through the start-up and the closing of the steerable negative pressure machine 6 of control panel 11, driving motor 8, three-phase motor 12, the direction rotation of the steerable four wheel 9 of control panel 11 is realized, simplify the operation mode of this device, reduce the operation degree of difficulty.

The utility model provides a working principle of a small semi-automatic agricultural plowing and seeding device, which comprises the following steps:

the device is moved to a land block needing ploughing and seeding, the driving motor 8 is started through the control panel 11, the gear belt 19 is meshed with the driving gear 21 and the driven gear 22 to drive the soil turning roller 18 to rotate, ploughing is rapidly carried out, the negative pressure air port 31 is pressed down through elastic fit between the two pressing springs 27 and the fixed sleeve 30, the sealing and clinging between the negative pressure air port 31 and the sucking disc 17 are increased, the negative pressure machine 6 is arranged on the seeding box 4, the negative pressure machine 6 is connected with the negative pressure air port 31 through a pipeline, the negative pressure machine 6 is started through the control panel 11, the negative pressure suction force is provided for the sucking disc 17 through negative pressure suction of the negative pressure air port 31, the seeds are quickly adsorbed, the accurate quantification of the seeds is realized, the seeds are uniformly distributed, the later-stage intertillage weeding is facilitated, the three-phase motor 12 is started through the control panel 11, the three-phase motor 12 drives the screw 13 to rotate, through the rolling fit between the screw 13 and the slider 5, the front and back movement of the seeding box 4 is pushed, the two sliding grooves 3 are arranged on the inner wall of the seeding groove 2, the arrangement of the two sliding grooves 3 is convenient for the sliding of the two limit blocks 20, the two limit blocks 20 are respectively inserted into the two sliding grooves 3, the two limit blocks 20 are fixedly connected on the seeding box 4, the limit sliding between the two limit blocks 20 and the two sliding grooves 3 is used for limit sliding of the movement of the seeding box 4, the rapid displacement of the adsorbed seeds is realized, the positioning seeding is convenient, the seeds are further uniformly distributed, the device is displaced by starting the four wheels 9 through the control panel 11, when the seeding box 4 moves forwards, the two inserting columns 23 contact with the inner wall of the seeding groove 2 and are extruded by the seeding box 4, the two inserting columns 23 are inserted into the two inserting grooves 10 in a backward sliding way, and the two inserting columns 23 are inserted, promote two lifting pieces 24 and upwards rotate negative pressure wind gap 31, when pivoted negative pressure wind gap 31 highly is higher than the intercommunicating pore 25, destroy the negative pressure state between negative pressure wind gap 31 and the sucking disc 17, make sucking disc 17 go up absorbent seed drop and sow, realize quick seeding, scraper 16's setting is used for carrying out the flattening to the ground of 18 ploughs of digging roll, and carry out the earthing to the seed that spills, make the earthing depth unified, finally realize the quick seeding of integration, the seed distributes evenly, the earthing depth is unified, the intertillage weeding of being convenient for in the later stage.

Claims

1. The utility model provides a small-size semi-automatic agricultural ploughing seeder which characterized in that includes:

the fixed frame (1) is provided with a seeding groove (2);

the seeding box (4), the seeding box (4) is arranged in the seeding groove (2);

the negative pressure adsorption mechanism comprises a sucker (17) and a negative pressure air port (31), the sucker (17) is arranged in the sowing box (4), a plurality of suction holes are formed in the sucker (17) and used for adsorbing seeds, the negative pressure air port (31) is rotatably connected into the sowing box (4) through a hinge shaft, and the sucker (17) is matched with the negative pressure air port (31) and used for adsorbing the seeds;

the telescopic mechanism is arranged on the fixed frame (1) and comprises a sliding block (5), and the telescopic mechanism is fixedly connected with the sowing box (4) through the sliding block (5) and used for pushing the sowing box (4) to reciprocate;

the transformation mechanism is arranged on the sowing box (4), and is used for breaking a negative pressure state to realize sowing; and

the bottom of the fixed frame (1) is provided with a seed tray (15) for storing seeds.

2. The small semi-automatic agricultural tilling and seeding device according to claim 1, wherein the negative pressure adsorption mechanism further comprises a negative pressure machine (6), two telescopic rods (26), two pressing springs (27) and two fixing sleeves (30), the two telescopic rods (26) are fixedly connected to the top of the negative pressure air port (31), the circumferential surfaces of the two telescopic rods (26) are sequentially sleeved with the pressing springs (27) and the fixing sleeves (30) from bottom to top, the two fixing sleeves (30) are both fixedly connected to the inner wall of the seeding box (4), the negative pressure machine (6) is arranged on the seeding box (4), and the negative pressure machine (6) is connected with the negative pressure air port (31) through a pipeline.

3. The small-sized semi-automatic agricultural tilling and seeding device according to claim 2, wherein the telescoping mechanism comprises a sliding block (5), a three-phase motor (12), a screw rod (13), two sliding grooves (3) and a limiting block (20), the three-phase motor (12) is fixedly connected to the fixing frame (1), a control panel (11) is fixedly connected to the output end of the three-phase motor (12), the three-phase motor (12) is arranged in the seeding groove (2), the sliding block (5) is sleeved on the circumferential surface of the screw rod (13), the two sliding grooves (3) are arranged on the inner wall of the seeding groove (2), the two limiting blocks (20) are respectively inserted in the two sliding grooves (3), and the two limiting blocks (20) are both fixedly connected to the seeding box (4).

4. The small semi-automatic agricultural tilling and seeding device according to claim 3, the transformation mechanism comprises two groups of elastic components and a plurality of communicating holes (25), each group of elastic components comprises an inserting column (23), a lifting block (24), a return spring (28), an inserting groove (10) and a plurality of rollers (29), the lifting block (24) is fixedly connected to the negative pressure air port (31), the insertion groove (10) is arranged on the lifting block (24), the inserting column (23) is arranged on the sowing box (4), one end of the lifting block (24) is inserted in the inserting groove (10), the plurality of rollers (29) are rotatably connected on the inserting column (23) in the inserting groove (10), the reset spring (28) is sleeved on the circumferential surface of the other end of the inserting column (23), and the communicating holes (25) are formed in the sowing box (4).

5. The small semi-automatic agricultural tilling and sowing device according to claim 4, wherein the fixing frame (1) is provided with a holding groove (7), a driving motor (8) is arranged in the holding groove (7), the output end of the driving motor (8) is fixedly connected with a driving gear (21), the fixing frame (1) is provided with a soil turning roller (18), the soil turning roller (18) is provided with a driven gear (22), and the circumferential surfaces of the driving gear (21) and the driven gear (22) are sleeved with a gear belt (19).

6. The small semi-automatic agricultural tilling and seeding device according to claim 5, wherein four wheels (9) are fixedly connected to the fixing frame (1).

7. The small semi-automatic agricultural tilling and seeding device according to claim 6, wherein a scraper (16) is fixedly connected to the bottom of the seed tray (15), and the scraper (16) corresponds to the tilling roller (18).

8. The small semi-automatic agricultural tilling and seeding device according to claim 7, wherein a battery (14) is fixedly connected to the upper portion of the seeding box (4), the battery (14) is electrically connected to the negative pressure machine (6), the driving motor (8), the three-phase motor (12) and the four wheels (9), and the control board (11) is connected to the battery (14) through an elastic control line.