CN115039543A

CN115039543A - Agricultural seeding machine

Info

Publication number: CN115039543A
Application number: CN202210971309.XA
Authority: CN
Inventors: 王少平; 李秀川; 和韩伟
Original assignee: Puxian Agricultural Resources Development Center
Current assignee: Puxian Agricultural Resources Development Center
Priority date: 2022-08-15
Filing date: 2022-08-15
Publication date: 2022-09-13

Abstract

The invention relates to the technical field of agricultural seeding, in particular to an agricultural seeding machine, which comprises a box body, wherein a cavity and a rotary table which are matched with each other are arranged in the box body, a holding tank is arranged on the periphery of the rotary table, a storage box is arranged on the box body and is communicated with the cavity through a first connecting pipe, an intermittent mechanism is arranged in the box body and drives the rotary table to rotate intermittently, and a watering mechanism and a material pushing mechanism matched with a transverse groove are arranged in the box body. According to the invention, the output end of the driving motor drives the turntable to intermittently rotate, the other output end drives the push rod to reciprocate, the seeds are sequentially transferred into the transverse groove through the accommodating groove, then the seeds are pushed out by the push block and fall down through the blanking pipe, the box body integrally moves at a constant speed, the distances among the falling seeds are the same, the seeds are uniformly distributed, the seeds are prevented from being distributed too densely or too sparsely, and the utilization rate of the land is improved on the premise of ensuring the normal growth of crops.

Description

Agricultural seeding machine

Technical Field

The invention relates to the technical field of agricultural sowing, in particular to an agricultural sowing machine.

Background

The seeding is a basic link of agriculture, the quality of the seeding quality influences the rate of emergence, and the seeding machine is a planting machine taking crop seeds as seeding objects. Seeders for certain types or crops are often referred to by the name of the crop type, such as grain drill, corn hill planter, cotton planter, grass spreader, and the like.

Along with the rapid development of science and technology, the agricultural has been from traditional manual seeding mechanization gradually, whether the seeding is even, interval between the seed, whether the volume of seeding is suitable, all can influence the harvest of crops, and corn seed uneven distribution's problem when present common corn seeding machinery exists the seeding, if the seed distribution is too intensive, lead to the plant after seedling too intensive, thereby strive for the nutrient each other when making crop growth, be unfavorable for the growth of crop, if the seed distribution is too sparse, then the utilization ratio in soil is lower.

Disclosure of Invention

The invention aims to: in order to solve the problems, an agricultural seeding machine is provided.

In order to achieve the purpose, the invention adopts the following technical scheme:

an agricultural sowing machine comprises a box body, wherein a cavity and a rotary table which are matched with each other are arranged in the box body, a holding tank is arranged on the periphery of the rotary table, a storage box is arranged on the box body and is communicated with the cavity through a first connecting pipe, an intermittent mechanism is arranged in the box body and drives the rotary table to rotate intermittently, a horizontal groove is formed in the box body below the cavity and is communicated with the cavity through a second connecting pipe, a discharging pipe is communicated with one end of the horizontal groove, the lower end of the discharging pipe extends to the lower portion of the box body, and a watering mechanism and a material pushing mechanism matched with the horizontal groove are arranged in the box body;

the intermittent mechanism comprises a first bracket and a second bracket which are fixedly connected with the bottom surface wall in the box body, a rotating shaft is rotatably connected on the second bracket, a rotating wheel is fixedly connected on the rotating shaft, a connecting shaft is rotatably connected on the rotating wheel, a transmission rod is rotatably connected on the connecting shaft, a limiting rod is arranged on the first bracket, a limiting groove which is slidably connected with the limiting rod is arranged at one end of the transmission rod, a third bracket is fixedly connected with the bottom surface wall in the box body, a connecting rod is rotatably connected on the third bracket, a disc and a turntable which are coaxially arranged are respectively and fixedly connected at two ends of the connecting rod, teeth are arranged on the periphery of the disc, a shifting block which is matched with the teeth is arranged at one end of the transmission rod, away from the limiting groove, a limiting component which is matched with the teeth is arranged on the third bracket, a supporting platform is arranged outside the second bracket, and a driving motor is arranged on the supporting platform, the output end of the driving motor is connected with the rotating shaft through a belt;

the pushing mechanism comprises a fixing ring fixedly connected with the inner bottom surface wall of the box body, a sliding ring is slidably connected to the inner side of the fixing ring, a cross is fixedly connected to the inner side of the sliding ring, a gear is rotatably connected to the cross, a gear ring is fixedly connected to the fixing ring, the gear is meshed with the gear ring and is connected with the output end of the driving motor, the middle portion of the cross is fixedly connected with the output end of the driving motor, a sliding sleeve is fixedly connected to the fixing ring, a push rod is slidably connected to the inner portion of the sliding sleeve, one end of the push rod is rotatably connected with the end face of the gear, the other end of the push rod extends to the inner portion of the transverse groove and is fixedly connected with a push block, and a support arm is arranged on the push block.

Preferably, the watering mechanism comprises a water storage tank arranged inside the box body and a water outlet pipe arranged in parallel with the discharging pipe, the lower end of the water outlet pipe extends to the lower part of the box body, the water storage tank is communicated with the upper end of the water outlet pipe through a third connecting pipe, and a switch assembly matched with the water outlet pipe is arranged inside the box body.

Preferably, the switch assembly comprises a groove arranged inside the box body, one end of the groove is communicated with the transverse groove, a spring and a baffle are arranged inside the groove, two ends of the spring are fixedly connected with one side of the baffle and the inner side wall of the groove respectively, a channel matched with a water outlet pipe is formed in the baffle, and a limiting block matched with the baffle is arranged in the transverse groove.

Preferably, the groove is horizontally arranged, and the baffle is consistent with the horizontal height of the support arm.

Preferably, the tooth is equipped with a plurality ofly, and is a plurality of the tooth is annular equidistance distribution about the axle center of disc, the holding tank is equipped with a plurality ofly, and is a plurality of the holding tank is annular equidistance distribution about the axle center of carousel, the quantity of tooth is the same with the quantity of holding tank.

Preferably, the driving motor is a double-head motor, and the rotating shaft is not overlapped with the axis of the connecting shaft.

Preferably, the limiting assembly comprises a connecting arm, a balancing weight and a roller, the middle part of the connecting arm is rotatably connected with the third support, one end of the connecting arm is fixedly connected with the balancing weight, the other end of the connecting arm is rotatably connected with the roller, and the roller is matched with the teeth.

Preferably, the lower end of the box body is provided with a travelling wheel, and one side of the box body is provided with a handle.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. this application is through being equipped with intermittent type mechanism and pushing equipment, output through driving motor drives the carousel intermittent type and rotates, another output drives push rod reciprocating motion, transport the cross slot with the seed in proper order through the holding tank in, release the seed by the ejector pad again, fall by the unloading pipe, along with the whole uniform velocity removal of box, interval after the whereabouts between the seed is the same, and can be according to soil environment, external factors such as weather, interval size between two adjacent seeds is adjusted to the translation rate through controlling the box, make seed distribution even, avoid seed distribution too intensive or too sparse, under the prerequisite of guaranteeing crop normal growth, the utilization ratio in soil has been improved.

2. This application is through being equipped with the mechanism of watering, drive support arm reciprocating motion through push rod reciprocating motion, when the ejector pad promotes the seed whereabouts, support arm and baffle contact, and promote the baffle and remove, make the spring compressed, align with the outlet pipe until the passageway, water source in the water storage box is gone into in the outlet pipe by the third connecting pipe, and finally go out water by outlet pipe lower extreme, water the seed of whereabouts, along with push rod reciprocating motion, support arm reverse motion, after the baffle loses the thrust of support arm, the original state need be replied to the spring of compressed, it resets to drive the baffle, until baffle and stopper contact, the baffle is stopped up the outlet pipe, realize intermittent type water irrigation, under the prerequisite of the irrigation demand of guaranteeing the seed, the utilization ratio of water resource has been improved.

Drawings

FIG. 1 is a schematic view showing the internal structure of a sowing machine provided according to an embodiment of the present invention;

FIG. 2 shows an enlarged view of the structure of FIG. 1 at A in accordance with the present invention;

FIG. 3 is a schematic structural diagram of an intermittent mechanism and a material pushing mechanism provided according to an embodiment of the invention;

FIG. 4 is a schematic view of another angle of the intermittent mechanism and the pushing mechanism provided according to the embodiment of the invention;

FIG. 5 is a schematic diagram illustrating a stop assembly engaged with a tooth structure provided in accordance with an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a rotating shaft and a connecting shaft provided in an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a material pushing mechanism provided according to an embodiment of the invention.

Illustration of the drawings:

1. a box body; 2. a handle; 3. a traveling wheel; 4. a material storage box; 5. a first connecting pipe; 6. a cavity; 7. a turntable; 8. a second connecting pipe; 9. a transverse groove; 10. a discharging pipe; 11. accommodating grooves; 12. a first bracket; 13. a second bracket; 14. a rotating shaft; 15. a rotating wheel; 16. a connecting shaft; 17. a transmission rod; 18. a limiting groove; 19. a limiting rod; 20. shifting blocks; 21. a third support; 22. a connecting rod; 23. a disc; 24. teeth; 25. a connecting arm; 26. a balancing weight; 27. a roller; 28. a support table; 29. a drive motor; 30. a belt; 31. a fixing ring; 32. a slip ring; 33. a cross; 34. a gear; 35. a ring gear; 36. a push rod; 37. a sliding sleeve; 38. a push block; 39. a support arm; 40. a water storage tank; 41. a third connecting pipe; 42. a water outlet pipe; 43. a groove; 44. a spring; 45. a baffle plate; 46. a channel; 47. and a limiting block.

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.

Referring to fig. 1-7, the present invention provides a technical solution:

an agricultural sowing machine comprises a box body 1, wherein a cavity 6 and a rotary table 7 which are mutually matched are arranged in the box body 1, an accommodating groove 11 is formed in the periphery of the rotary table 7, a material storage box 4 is arranged on the box body 1, the material storage box 4 is communicated with the cavity 6 through a first connecting pipe 5, an intermittent mechanism is arranged in the box body 1 and drives the rotary table 7 to rotate intermittently, a horizontal groove 9 is formed in the box body 1 below the cavity 6, the horizontal groove 9 is communicated with the cavity 6 through a second connecting pipe 8, one end of the horizontal groove 9 is communicated with a discharging pipe 10, the lower end of the discharging pipe 10 extends to the lower portion of the box body 1, a watering mechanism and a material pushing mechanism matched with the horizontal groove 9 are arranged in the box body 1; the intermittent mechanism comprises a first bracket 12 and a second bracket 13 which are fixedly connected with the bottom surface wall in the box body 1, a rotating shaft 14 is rotatably connected on the second bracket 13, a rotating wheel 15 is fixedly connected on the rotating shaft 14, a connecting shaft 16 is rotatably connected on the rotating wheel 15, a transmission rod 17 is rotatably connected on the connecting shaft 16, a limiting rod 19 is arranged on the first bracket 12, a limiting groove 18 which is slidably connected with the limiting rod 19 is arranged at one end of the transmission rod 17, a third bracket 21 is fixedly connected with the bottom surface wall in the box body 1, a connecting rod 22 is rotatably connected on the third bracket 21, a disc 23 and a rotating disc 7 which are coaxially arranged are respectively and fixedly connected at two ends of the connecting rod 22, teeth 24 are arranged on the periphery of the disc 23, a shifting block 20 which is matched with the teeth 24 is arranged at one end of the transmission rod 17 far away from the limiting groove 18, a limiting component which is matched with the teeth 24 is arranged on the third bracket 21, and a supporting table 28 is arranged outside the second bracket 13, a driving motor 29 is arranged on the supporting platform 28, and the output end of the driving motor 29 is connected with the rotating shaft 14 through a belt 30; the pushing mechanism comprises a fixing ring 31 fixedly connected with the inner bottom surface wall of the box body 1, a sliding ring 32 is slidably connected to the inner side of the fixing ring 31, a cross 33 is fixedly connected to the inner side of the sliding ring 32, a gear 34 is rotatably connected to the cross 33, a gear ring 35 is fixedly connected to the fixing ring 31, the gear 34 is meshed with the gear ring 35, the output end of the driving motor 29 is fixedly connected with the middle part of the cross 33, a sliding sleeve 37 is fixedly connected to the fixing ring 31, a push rod 36 is slidably connected to the inner part of the sliding sleeve 37, one end of the push rod 36 is rotatably connected with the end face of the gear 34, the other end of the push rod 36 extends to the inner part of the transverse groove 9 and is fixedly connected with a push block 38, and a support arm 39 is arranged on the push block 38. Drive carousel 7 intermittent type through driving motor 29 and rotate, drive push rod 36 reciprocating motion simultaneously, rotate through holding tank 11 intermittent type, transport the transverse groove 9 with the seed in proper order in, release the seed by ejector pad 38 again, fall by unloading pipe 10, along with the whole uniform velocity removal of box 1, interval between the seed after the whereabouts is the same, and can be according to soil environment, external factors such as weather, the rational arrangement seed interval, and adjust the interval size between two adjacent seeds through the moving speed of control box 1 or driving motor 29's rotational speed, make the seed distribution even, avoid the seed distribution too intensive or too sparse, under the prerequisite of guaranteeing crop normal growth, the utilization ratio of soil has been improved. Meanwhile, the diameter of the gear 34 is smaller than that of the gear ring 35, and the diameter of the gear 34 is larger than the radius of the gear ring 35, so that the push rod 36 and the joint of the push rod 36 and the gear 34 are always at the same horizontal height in the rotation process of the gear 34, and the reciprocating movement of the push rod 36 is realized.

Specifically, as shown in fig. 1 and 2, the watering mechanism includes a water storage tank 40 disposed inside the tank body 1 and a water outlet pipe 42 arranged in parallel with the discharging pipe 10, the lower end of the water outlet pipe 42 extends to the lower side of the tank body 1, the water storage tank 40 is communicated with the upper end of the water outlet pipe 42 through a third connecting pipe 41, and a switch assembly matched with the water outlet pipe 42 is disposed inside the tank body 1. Switch module is including offering in the inside recess 43 of box 1, and recess 43 one end and transverse groove 9 intercommunication, and the inside spring 44 and the baffle 45 of being equipped with of recess 43, spring 44's both ends respectively with baffle 45 one side and recess 43 inside wall fixed connection, seted up outlet pipe 42 matched with passageway 46 on the baffle 45, be equipped with in the transverse groove 9 with baffle 45 matched with stopper 47. The groove 43 is horizontally arranged, and the baffle 45 is consistent with the horizontal height of the support arm 39. The push rod 36 reciprocates to drive the support arm 39 to reciprocate, when the push block 38 pushes the seeds to fall, the support arm 39 contacts with the baffle 45 and pushes the baffle 45 to move, so that the spring 44 is compressed until the channel 46 is aligned with the water outlet pipe 42, a water source in the water storage tank 40 enters the water outlet pipe 42 through the third connecting pipe 41, and finally water is discharged from the lower end of the water outlet pipe 42, the seeds falling are irrigated, along with the reciprocating movement of the push rod 36, the support arm 39 moves reversely, after the baffle 45 loses the thrust of the support arm 39, the compressed spring 44 needs to return to the original state, the baffle 45 is driven to reset, until the baffle 45 contacts with the limiting block 47, the baffle 45 blocks the water outlet pipe 42, intermittent water outlet irrigation is realized, on the premise of ensuring the irrigation requirements of the seeds, the utilization rate of water resources is improved.

Specifically, as shown in fig. 3, 4, 5 and 6, there are a plurality of teeth 24, the plurality of teeth 24 are distributed in an annular equidistant manner about the axis of the circular disk 23, there are a plurality of receiving grooves 11, the plurality of receiving grooves 11 are distributed in an annular equidistant manner about the axis of the rotating disk 7, and the number of teeth 24 is the same as the number of receiving grooves 11. The driving motor 29 is a double-headed motor, and the axes of the rotating shaft 14 and the connecting shaft 16 do not coincide. The limiting assembly comprises a connecting arm 25, a balancing weight 26 and a roller 27, the middle part of the connecting arm 25 is rotatably connected with the third support 21, one end of the connecting arm 25 is fixedly connected with the balancing weight 26, the other end of the connecting arm is rotatably connected with the roller 27, and the roller 27 is matched with the tooth 24. The inside area that holds of holding tank 11 and the size of a dimension phase-match of seed for holding tank 11 is inside can only have a seed at most, is equipped with spacing subassembly simultaneously, makes when shifting block 20 breaks away from with tooth 24, and corresponding tooth 24 is blocked to gyro wheel 27 under the action of gravity of balancing weight 26, has guaranteed disc 23 and carousel 7's stability.

Specifically, as shown in fig. 1, the lower end of the box body 1 is provided with a walking wheel 3, and one side of the box body 1 is provided with a handle 2. The walking wheels 3 are arranged, so that the box body 1 can be conveniently moved, and the handle 2 is arranged, so that the operation of a worker can be conveniently carried out.

In summary, in the agricultural sowing machine provided by this embodiment, when in use, firstly, corn seeds are placed in the storage box 4, the driving motor 29 is started, the rotating shaft 14 is driven to rotate by the belt 30, the rotating wheel 15 is driven to rotate by the rotating shaft 14, the connecting shaft 16 is driven to rotate around the rotating shaft 14 by the rotating wheel 15, under the limit of the limit rod 19, the moving path of the shifting block 20 on the transmission rod 17 is annular, that is, the shifting block 20 is firstly clamped between two adjacent teeth 24, the shifting block 20 continues to move to drive the disc 23, after the disc 23 rotates by a certain angle, the shifting block 20 is separated from the teeth 24, and then continues to be clamped between the next two adjacent teeth 24, and the cycle is repeated in this way to drive the disc 23 to make intermittent rotation, when the disc 23 rotates, the teeth 24 in contact with the roller 27 drive the roller 27 to move down, when the disc 23 stops rotating, the roller 27 moves up the teeth 24 again under the gravity of the counterweight 26, the intermittently rotating disc 23 drives the rotating disc 7 to intermittently rotate through the connecting rod 22, when the rotating disc 7 is static, the accommodating groove 11 is just aligned with the first connecting pipe 5 and the second connecting pipe 8, only one seed exists in the accommodating groove 11 at the same time, the seeds in the storage box 4 enter the accommodating groove 11 along the first connecting pipe 5, along with the intermittent rotation of the rotating disc 7, the seeds sequentially enter the accommodating grooves 11 on the rotating disc 7, when the accommodating groove 11 filled with the seeds rotates to be aligned with the second connecting pipe 8, the seeds in the accommodating groove 11 fall into the transverse groove 9 through the second connecting pipe 8, the driving motor 29 drives the sliding ring 32 and the cross 33 to rotate around the axis of the sliding ring 32, so as to drive the gear 34 to rotate around the axis of the sliding ring 32, because the gear 34 is meshed with the gear ring 35, the gear 34 rotates around the axis of the sliding ring 32 at the same time, under the limit of the sliding sleeve 37, the push rod 36 is made to reciprocate, because the driving motor 29 drives the rotating shaft 14 to rotate for one circle, the disc 23 and the rotating disc 7 both intermittently rotate for one time, meanwhile, the driving motor 29 drives the sliding ring 32 to rotate for one circle, the push rod 36 makes one reciprocating movement, when seeds fall into the transverse groove 9, the push rod 36 drives the push block 38 to push the seeds in the transverse groove 9 to move until the seeds fall from the blanking pipe 10, the push rod 36 drives the push block 38 to move and simultaneously drives the support arm 39 to move, so that the support arm 39 is in contact with the baffle 45 and pushes the baffle 45 to move, so that the spring 44 is compressed until the channel 46 is aligned with the water outlet pipe 42, the water source in the water storage tank 40 enters the water outlet pipe 42 through the third connecting pipe 41 and finally flows out from the lower end of the water outlet pipe 42 to irrigate the seeds, along with the reciprocating movement of the push rod 36, the push block 38 and the support arm 39 reversely move, and after the baffle 45 loses the thrust of the support arm 39, compressed spring 44 needs the reconversion, drives baffle 45 and resets, and until baffle 45 and stopper 47 contact, baffle 45 blocks up outlet pipe 42, and ejector pad 38 resets simultaneously to next seed falls, so reciprocal, along with the whole uniform velocity of box 1 removes, and the interval between the adjacent seed is the same, adjusts the interval size between two adjacent seeds through the moving speed of control box 1.

The previous description of the embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An agricultural seeding machine comprises a box body (1) and is characterized in that a cavity (6) and a rotating disc (7) which are mutually matched are arranged inside the box body (1), the periphery of the turntable (7) is provided with an accommodating groove (11), the box body (1) is provided with a material storage box (4), the material storage box (4) is communicated with the cavity (6) through a first connecting pipe (5), an intermittent mechanism is arranged in the box body (1) to drive the turntable (7) to rotate intermittently, a horizontal groove (9) is arranged on the box body (1) below the cavity (6), the transverse groove (9) is communicated with the cavity (6) through a second connecting pipe (8), one end of the transverse groove (9) is communicated with a discharging pipe (10), the lower end of the discharging pipe (10) extends to the lower part of the box body (1), a watering mechanism and a material pushing mechanism matched with the transverse groove (9) are arranged in the box body (1);

the intermittent mechanism comprises a first support (12) and a second support (13) which are fixedly connected with the inner bottom surface wall of a box body (1), a rotating shaft (14) is connected to the second support (13) in a rotating manner, a rotating wheel (15) is fixedly connected to the rotating shaft (14), a connecting shaft (16) is connected to the rotating wheel (15) in a rotating manner, a transmission rod (17) is connected to the connecting shaft (16) in a rotating manner, a limiting rod (19) is arranged on the first support (12), a limiting groove (18) which is connected with the limiting rod (19) in a sliding manner is formed in one end of the transmission rod (17), a third support (21) is fixedly connected to the inner bottom surface wall of the box body (1), a connecting rod (22) is connected to the third support (21) in a rotating manner, a disc (23) and a turntable (7) which are coaxially arranged are fixedly connected to the two ends of the connecting rod (22) respectively, teeth (24) are arranged on the periphery of the disc (23), one end, far away from the limiting groove (18), of the transmission rod (17) is provided with a shifting block (20) matched with the teeth (24), a limiting component matched with the teeth (24) is arranged on the third support (21), a support table (28) is arranged on the outer side of the second support (13), a driving motor (29) is arranged on the support table (28), and the output end of the driving motor (29) is connected with the rotating shaft (14) through a belt (30);

the pushing mechanism comprises a fixing ring (31) fixedly connected with the inner bottom surface wall of the box body (1), a slip ring (32) is connected to the inner side of the fixed ring (31) in a sliding manner, a cross (33) is fixedly connected to the inner side of the slip ring (32), a gear (34) is rotatably connected on the cross (33), a gear ring (35) is fixedly connected on the fixed ring (31), the gear (34) is meshed with the gear ring (35), the output end of the driving motor (29) is fixedly connected with the middle part of the cross (33), a sliding sleeve (37) is fixedly connected on the fixing ring (31), a push rod (36) is connected in the sliding sleeve (37) in a sliding manner, one end of the push rod (36) is rotatably connected with the end face of the gear (34), the other end of the push rod (36) extends into the transverse groove (9) and is fixedly connected with a push block (38), and a support arm (39) is arranged on the push block (38).

2. An agricultural sowing machine according to claim 1, wherein the watering mechanism comprises a water storage tank (40) arranged inside the box body (1) and a water outlet pipe (42) arranged in parallel with the feeding pipe (10), the lower end of the water outlet pipe (42) extends to the lower part of the box body (1), the water storage tank (40) is communicated with the upper end of the water outlet pipe (42) through a third connecting pipe (41), and a switch assembly matched with the water outlet pipe (42) is arranged inside the box body (1).

3. The agricultural sowing machine according to claim 2, wherein the switch assembly comprises a groove (43) formed in the box body (1), one end of the groove (43) is communicated with the transverse groove (9), a spring (44) and a baffle (45) are arranged in the groove (43), two ends of the spring (44) are fixedly connected with one side of the baffle (45) and the inner side wall of the groove (43), a channel (46) matched with the water outlet pipe (42) is formed in the baffle (45), and a limit block (47) matched with the baffle (45) is arranged in the transverse groove (9).

4. An agricultural sowing machine according to claim 3, wherein the groove (43) is arranged horizontally and the baffle (45) coincides with the horizontal height of the arm (39).

5. An agricultural sowing machine according to claim 1, wherein a plurality of the teeth (24) are provided, a plurality of the teeth (24) are annularly and equidistantly distributed about the axial center of the disc (23), a plurality of the receiving grooves (11) are provided, a plurality of the receiving grooves (11) are annularly and equidistantly distributed about the axial center of the rotating disc (7), and the number of the teeth (24) is the same as the number of the receiving grooves (11).

6. An agricultural sowing machine according to claim 1, wherein the drive motor (29) is a double-headed motor, and the axis of the rotating shaft (14) is not coincident with the axis of the connecting shaft (16).

7. An agricultural sowing machine according to claim 1, wherein the limiting assembly comprises a connecting arm (25), a counterweight (26) and a roller (27), the middle part of the connecting arm (25) is rotatably connected with the third bracket (21), the counterweight (26) is fixedly connected with one end of the connecting arm (25), the roller (27) is rotatably connected with the other end of the connecting arm, and the roller (27) is matched with the tooth (24).

8. An agricultural sowing machine according to claim 1, wherein the lower end of the box body (1) is provided with a travelling wheel (3), and one side of the box body (1) is provided with a handle (2).