CN118370036A - Agricultural planting ditcher - Google Patents

Abstract

The present invention discloses an agricultural planting trenching machine, and relates to the technical field of agricultural planting equipment. The present invention includes a support plate installed on a machine body, and also includes: two trenching parts, both of which include pillars rotatably installed on the support plate, both of which are rotatably installed with a knife disc through a sleeve disc, and both pillars are fixedly installed with a shell; a driving part, the driving part includes a rotating shaft rotatably connected to the support plate, and a transmission assembly is installed between the rotating shaft and the two knife discs, and an angle adjustment assembly is installed between the rotating shaft and the two pillars; two impurity removal parts, both of which include support plates fixedly installed on corresponding shells. The advantage is that the agricultural planting trenching machine can adjust the trenching angle according to needs, and can meet the trenching processing at different angles. At the same time, when trenching, stones and weeds in the trench can be cleaned to avoid affecting the subsequent seed burying and fertilization effects, and effectively improve the overall trenching effect.

Description

Agricultural planting trenching machine

Technical Field

The present invention relates to the technical field of agricultural planting equipment, and in particular to an agricultural planting trenching machine.

Background technique

In the process of agricultural planting, it is necessary to dig trenches in the farmland for burying seeds or applying fertilizers. Generally, trenching is carried out using a trencher, which can significantly improve planting efficiency, reduce labor intensity, and ensure that the depth and width of the trenches are uniform.

However, when farmland is first used for trenching, there may be many stones and weeds, and the existing trenching machines are unable to clean the stones and weeds in the farmland. The presence of stones and weeds after trenching will affect the subsequent seed burying or fertilization process, and the overall trenching effect is not good. At the same time, the trenching angle of the existing trenching machine is difficult to adjust and cannot meet different trenching needs. Therefore, it is necessary to design an agricultural planting trenching machine.

Summary of the invention

The purpose of the present invention is to solve the problems in the prior art that trenching machines cannot clean stones and weeds in farmland, the overall trenching effect is poor and the trenching angle is difficult to adjust, and to propose an agricultural planting trenching machine.

In order to achieve the above object, the present invention adopts the following technical solutions:

An agricultural planting trenching machine comprises a support plate mounted on a machine body, and further comprises:

Two ditching parts, each of the two ditching parts comprises a support rotatably mounted on the support plate, a cutter disc is rotatably mounted on each of the two supports through a sleeve disc 2, and a housing is fixedly mounted on each of the two supports;

A driving part, the driving part comprises a rotating shaft rotatably connected to the support plate, a transmission assembly is installed between the rotating shaft and the two cutter discs, and an angle adjustment assembly is installed between the rotating shaft and the two pillars;

Two impurity removal parts, both of which include support plates fixedly mounted on the corresponding shells, and both support plates are rotatably mounted with turntables and rotating columns, both rotating columns are fixedly mounted with multiple sieve stone racks, both turntables are fixedly mounted with grass cutting racks, and the two grass cutting racks are respectively matched with the corresponding multiple sieve stone racks, and reversing components are installed between the two turntables and the two rotating columns.

Furthermore, the transmission assembly includes two connecting shafts rotatably connected to the two shells, and a transmission shaft is universally connected between the two connecting shafts. The two connecting shafts are respectively fixedly connected to the two cutter discs, a bevel gear set is installed between the transmission shaft and the rotating shaft, and a power belt is installed between the two connecting shafts and the two rotating columns.

Furthermore, the angle adjustment component includes a slide groove opened on the rotating shaft, and an angle gear one is slidably installed on the slide groove, an angle gear two and an angle gear four are respectively sealed and slidably installed on the two pillars, an angle gear three is rotatably installed on the support plate through a round rod, the angle gear one cooperates with the angle gear two and the angle gear three, the angle gear three cooperates with the angle gear four, two air cavities are provided on the support plate, and the two air cavities cooperate with the angle gear two and the angle gear four respectively, a pneumatic mechanism is installed on the support plate, and the pneumatic mechanism cooperates with the angle gear one and the two air cavities.

Furthermore, the diameters of the corner gear one and the corner gear two are equal, and the diameter ratio of the corner gear one and the corner gear three is equal to the diameter ratio of the corner gear four and the corner gear three.

Furthermore, the pneumatic mechanism includes two piston boxes fixedly mounted on the side walls of the support plate, and piston plates are sealingly and slidably mounted in the two piston boxes, drag rods are fixedly mounted on the two piston plates, air pipes are connected between the two piston boxes and the two air cavities, piston covers sealingly and slidably connected to the corresponding drag rods are fixedly mounted on the ports of the two piston boxes, a sleeve disc 1 rotatably connected to an angle gear 1 is fixedly mounted between the two drag rods, and a spring 1 is installed between the sleeve disc 1 and the support plate.

Furthermore, a one-way exhaust valve is provided at one end of the bottom of the piston box away from the piston cover, and the inner diameter of the sleeve disc 1 is larger than the diameter of the rotating shaft.

Furthermore, a shaft is fixedly mounted on the support plate, and the shaft is rotatably connected to the rotating column and the rotating plate, and the shaft, the rotating column and the rotating plate are coaxially arranged.

Furthermore, the reversing assembly includes a support rod fixedly mounted on the side wall of the shaft, and a connecting gear is rotatably mounted on the support rod. A group of mirror teeth are fixedly mounted on the side wall of the rotating column and the end close to the turntable, and the two groups of mirror teeth are respectively meshed with the upper and lower sides of the connecting gear.

Furthermore, a plurality of bottom bevel teeth are fixedly installed in the support plate, and each bottom bevel tooth does not contact the turntable. A sliding cavity is provided on the side wall of the screen frame away from the rotating column, and a bevel tooth frame matching the plurality of bottom bevel teeth is installed in the sliding cavity through spring 2.

Furthermore, the length of the stone screening frame is greater than that of the grass cutting frame, and a bottom cover is installed at one end of the bottom of the shell body away from the blade disc through a latch.

Compared with the prior art, the present invention has the following advantages:

1: This agricultural planting trencher has the advantage of being able to perform trenching at different angles and can meet different trenching needs. Specifically, through the cooperation of the angle adjustment component and the pneumatic mechanism, the installation angle of the cutter disc can be adjusted and fixed as needed to enable trenching at different angles.

2: This agricultural planting trencher has the advantage of clearing stones and weeds in farmland, which can ensure the trenching effect. Specifically, through the design of the stone screening frame, the stones and weeds remaining in the trench can be taken out after the trenching is completed, so as to avoid affecting the subsequent seed burying and fertilization effects.

3: This agricultural planting trencher has the advantage of crushing weeds and some small-sized stones, which can further improve the trenching effect. Specifically, through the cooperation of the reversing component and the grass crushing rack, the small stones and weeds on the stone screening rack can be crushed to improve the farming environment.

In summary, the agricultural planting trenching machine can adjust the trenching angle according to needs, and can meet the trenching processing at different angles. At the same time, the stones and weeds in the trench can be cleaned during trenching to avoid affecting the subsequent seed burying and fertilization effects, effectively improving the overall trenching effect.

BRIEF DESCRIPTION OF THE DRAWINGS

The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

FIG1 is a schematic structural diagram of an agricultural planting trenching machine proposed by the present invention;

FIG2 is an enlarged schematic diagram of the structure of the support plate, rotating gear four and the cutter disc in FIG1;

FIG3 is an enlarged schematic diagram of the structure of the support plate, the piston box and the air cavity in FIG2;

FIG4 is an enlarged schematic diagram of the structure of the support, the second corner gear and the third corner gear in FIG2;

FIG5 is an enlarged schematic diagram of the structure of the angle gear 1, the sleeve disc 1 and the tow rod in FIG4;

FIG6 is an enlarged schematic diagram of the structure of the cutter disc and the second sleeve disc in FIG1;

FIG7 is an enlarged schematic diagram of the structure of the second sleeve disc and the power belt in FIG6;

FIG8 is an enlarged schematic diagram of the structure of the transfer column, the sieve stone frame and the support plate in FIG7;

FIG9 is a schematic diagram of the structure of the mirror image teeth and gears in FIG8 ;

FIG10 is an enlarged schematic diagram of the structure of the sliding chamber, spring 2 and helical gear rack in FIG9;

FIG. 11 is an enlarged schematic diagram of the structure of the bottom cover and the latch in FIG. 1 .

In the figure: 1. body; 2. rotating shaft; 3. support plate; 4. piston box; 5. air pipe; 6. air cavity; 7. one-way exhaust valve; 8. pillar; 9. corner gear one; 10. corner gear two; 11. corner gear three; 12. corner gear four; 13. sleeve disc one; 14. spring one; 15. drag rod; 16. shell; 17. cutter disc; 18. sleeve disc two; 19. power belt; 20. rotating column; 21. stone screen frame; 22. mirror tooth; 23. sliding cavity; 24. spring two; 25. oblique gear frame; 26. support disc; 27. grass cutting frame; 28. connecting gear; 29. bottom oblique tooth; 30. shaft rod; 31. slide groove; 32. piston plate; 33. piston cover; 34. bottom cover; 35. latch; 36. turntable.

Detailed ways

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Referring to Figures 1 to 11, an agricultural planting trenching machine includes a support plate 3 mounted on a machine body 1, the support plate 3 is mounted on the machine body 1 through existing trailer latches and other components, the machine body 1 can be an existing hand-held tractor, which is equipped with a corresponding engine and a shifting component, the machine body 1 is used to drive the support plate 3 and the components thereon, and also includes:

Two ditching parts, both ditching parts include a support 8 rotatably mounted on the support plate 3, a cutter disc 17 is rotatably mounted on the two supports 8 through a sleeve disc 18, and a shell 16 is fixedly mounted on the two supports 8. The end of the support 8 away from the support plate 3 is arc-shaped, and a plurality of bent rods are fixedly mounted at the end thereof, and one end of the plurality of bent rods is inserted into the shell 16 and fixedly connected to the sleeve disc 18. Through the design of the support 8, the installation angle of the shell 16 can be controlled. Since the cutter disc 17 is installed inside the shell 16, when the angle of the shell 16 changes, the installation angle of the cutter disc 17 will also change accordingly, so as to facilitate ditching at different angles.

The driving part includes a rotating shaft 2 rotatably connected to the support plate 3, and a transmission assembly is installed between the rotating shaft 2 and the two cutter discs 17. The transmission assembly includes two connecting shafts rotatably connected to the two housings 16, and a transmission shaft is universally connected between the two connecting shafts. The two connecting shafts are respectively fixedly connected to the two cutter discs 17 (the connecting shafts and the transmission shafts are not marked in the figure). Through the design of the universal connection, the transmission effect between the transmission shaft and the two connecting shafts can be guaranteed when the installation angle of the two housings 16 changes. A bevel gear set is installed between the transmission shaft and the rotating shaft 2. The bevel gear set consists of bevel gear 1 and bevel gear 2. Bevel gear 1 is fixedly installed on the transmission shaft, and bevel gear 2 is fixedly installed on the rotating shaft 2. Through the cooperation of bevel gear 1 and bevel gear 2, when the rotating shaft 2 rotates, the transmission shaft can be driven to rotate, and then the two cutter discs 17 are driven to rotate through the two connecting shafts to realize ditching.

An angle adjustment component is installed between the rotating shaft 2 and the two pillars 8. The angle adjustment component includes a slide groove 31 opened on the rotating shaft 2, and a corner gear 1 9 is slidably installed on the slide groove 31. The corner gear 1 9 can only slide forward and backward on the rotating shaft 2 but cannot rotate axially. The two pillars 8 are respectively sealed and slidably installed with a corner gear 2 10 and a corner gear 4 12. The corner gear 2 10 and the corner gear 4 12 can also only slide forward and backward on the corresponding pillars 8 but cannot rotate axially. A corner gear 3 11 is rotatably installed on the support plate 3 through a round rod. The corner gear 1 9 cooperates with the corner gear 2 10 and the corner gear 3 11, and the corner gear 3 11 cooperates with the corner gear 4 12;

Two air cavities 6 are provided on the support plate 3, and the two air cavities 6 are matched with the corner gear 2 10 and the corner gear 4 12 respectively. The two air cavities 6 have different sizes, which are specifically consistent with the corresponding corner gear 2 10 or the corner gear 4 12. When the corner gear 2 10 and the corner gear 4 12 are located in the corresponding air cavities 6, the two air cavities 6 are in a sealed state. At the same time, since the air cavities 6 limit the positions of the corner gear 2 10 and the corner gear 4 12, the two pillars 8 are also in a fixed state at this time, so the fixing of the installation angles of the two shells 16 can be ensured, and the problem of poor ditching effect or inability to perform ditching caused by the angle deflection of the shell 16 during the ditching process can be avoided;

When the corner gear 2 10 and the corner gear 4 12 move in the direction away from the support plate 3 and separate from the corresponding air cavity 6, the corner gear 1 9 can be simultaneously moved closer to the support plate 3 so that the corner gear 1 9, the corner gear 2 10, the corner gear 3 11 and the corner gear 4 12 are finally on the same horizontal plane. At this time, the rotation shaft 2 can be rotated to make the corner gear 1 9 drive the corner gear 2 10 and the corner gear 3 11 to rotate in the opposite direction. At the same time, the corner gear 3 11 drives the corner gear 4 12 to rotate in the opposite direction relative to it. Therefore, the two pillars 8 rotate relatively, and the two housings 16 deflect in different directions to achieve the adjustment of the installation angles of the two.

The diameters of the corner gear 1 9 and the corner gear 2 10 are equal, and the diameter ratio of the corner gear 1 9 to the corner gear 3 11 is equal to the diameter ratio of the corner gear 4 12 to the corner gear 3 11. The advantage of the size design here is that it can ensure that when the corner gear 1 9 rotates, the two pillars 8 can rotate to the same angle, so that the two shells 16 are always in a mirror-symmetrical state after the angle is adjusted, thereby ensuring that the support plate 3 is subjected to the same reaction force angle between the two cutter discs 17 and the farmland, ensuring the stable travel of the machine body 1.

A pneumatic mechanism is installed on the support plate 3, and the pneumatic mechanism cooperates with the corner gear 9 and the two air chambers 6. The pneumatic mechanism includes two piston boxes 4 fixedly installed on the side wall of the support plate 3, and the two piston boxes 4 are sealed and slidably installed with piston plates 32, and the two piston plates 32 are fixedly installed with drag rods 15. The two piston boxes 4 and the two air chambers 6 are connected with air pipes 5, and the ports of the two piston boxes 4 are fixedly installed with piston covers 33 that are sealed and slidably connected with the corresponding drag rods 15. A sleeve disc 13 rotatably connected to the corner gear 9 is fixedly installed between the two drag rods 15, and a spring 14 is installed between the sleeve disc 13 and the support plate 3. The iron wire on the shift assembly on the machine body 1 is used to apply force to the two drag rods 15 to move closer to the machine body. The pulling force at one end of the body 1 is applied, and the corner gear 1 9 approaches the support plate 3. At the same time, the movement of the drag rod 15 causes the piston plate 32 to move in the same direction in the piston box 4. The two air pipes 5 generate positive pressure, pushing the corner gear 2 10 and the corner gear 4 12 out of the air cavity 6 until they are just separated from the air cavity 6. At this time, the corner gear 1 9, the corner gear 2 10, the corner gear 3 11 and the corner gear 4 12 are just in the same horizontal plane to achieve mutual meshing. Therefore, the installation angle of the two cutter discs 17 can be adjusted and controlled by rotating the rotating shaft 2. After the adjustment is completed, the drag rod 15 is reset. At this time, the corner gear 1 9, the corner gear 2 10 and the corner gear 4 12 are reset at the same time, and the angles of the two cutter discs 17 are fixed.

A one-way exhaust valve 7 is provided at one end of the bottom of the piston box 4 away from the piston cover 33. The inner diameter of the sleeve disc 13 is larger than the diameter of the rotating shaft 2. The design of the one-way exhaust valve 7 allows air to be drawn inwardly from the piston box 4 only through the air pipe 5 during the resetting process of the drag rod 15. Therefore, the negative pressure generated in the air cavity 6 is greater, which can ensure the smooth resetting of the corner gear 2 10 and the corner gear 4 12.

Two impurity removal parts, both of which include a support plate 26 fixedly mounted on the corresponding housing 16, and a rotating disk 36 and a rotating column 20 are rotatably mounted on the two support plates 26, a shaft 30 is fixedly mounted on the support plate 26, and the shaft 30 is rotatably connected with the rotating column 20 and the rotating plate 36, and the shaft 30 is coaxially arranged with the rotating column 20 and the rotating plate 36;

A power belt 19 is installed between the two connecting shafts and the two rotating columns 20. The power belt 19 is an existing transmission belt, which is used to drive the rotating column 20 to rotate simultaneously when the connecting shaft rotates. A plurality of stone screening frames 21 are fixedly installed on the two rotating columns 20. When the rotating column 20 rotates, the stone screening frames 21 rotate simultaneously. Since the cutter disc 17 has completed the trenching process at the front end, the stone screening frames 21 can take out the stones and large-sized weeds in the trench when they rotate. The bottom end of the shell 16 away from the cutter disc 17 is installed with a bottom cover 34 through a latch 35. When the large-sized stones on the stone screening frames 21 rotate to a high position as the stone screening frames 21 rotate to a high position, they will be thrown onto the bottom cover 34 for separation under the action of their own gravity and centrifugal force, so as to avoid the adverse effects of these stones on the subsequent planting and fertilization.

A plurality of bottom bevel teeth 29 are fixedly installed in the support plate 26, and each bottom bevel tooth 29 does not contact the turntable 36. A sliding cavity 23 is provided on the side wall of the end of the sieve stone frame 21 away from the rotating column 20, and a bevel gear frame 25 matching with the plurality of bottom bevel teeth 29 is installed in the sliding cavity 23 through a spring 24. Referring to Figure 9, when the sieve stone frame 21 rotates clockwise with the axis of the rotating column 20 as a reference, due to the cooperation between the bevel gear frame 25 and the plurality of bottom bevel teeth 29, the bevel gear frame 25 will move up and down on the sieve stone frame 21. At this time, the sieve stone frame 21 will vibrate to a certain extent, which is convenient for shaking off the soil adhering thereto, and avoiding the problem that the stones on the sieve stone frame 21 cannot be smoothly detached due to the presence of soil.

A grass-chopping rack 27 is fixedly mounted on the two rotating disks 36, and the two grass-chopping racks 27 are respectively matched with the corresponding multiple stone screening racks 21. A reversing assembly is installed between the two rotating disks 36 and the two rotating columns 20. The reversing assembly includes a support rod fixedly mounted on the side wall of the shaft rod 30, and a connecting gear 28 is rotatably mounted on the support rod. A group of mirror teeth 22 is fixedly mounted on the side wall of the rotating column 20 and the rotating disk 36 at one end, and the two groups of mirror teeth 22 are respectively meshed with the upper and lower sides of the connecting gear 28. Under the action of the connecting gear 28 and the two groups of mirror teeth 22, when the rotating column 20 rotates, the rotating disk 36 can be driven to rotate in the opposite direction relative to it. At this time, the grass-chopping rack 27 will rotate in the opposite direction relative to the stone screening rack 21, so that the weeds on the stone screening rack 21 can be crushed and the small stones stuck on the stone screening rack 21 can be knocked down. The crushed weeds can also provide nutrients to the farmland and improve the farming environment.

The length of the stone screening frame 21 is greater than that of the grass shredder frame 27. The advantage of the size design here is that it can avoid the problem that the grass shredder frame 27 contacts with large-sized stones on the stone screening frame 21 when rotating relative to the stone screening frame 21, resulting in the grass shredder frame 27 being unable to be discharged smoothly.

In the present invention, the working principle of an agricultural planting trenching machine includes the following steps:

Grooving angle adjustment: When using the device, the user can use the existing walking tractor shift assembly to control the rotation speed of the shaft 2. At the same time, the wire used when the walking tractor is shifted can be used to pull the towing rod 15 away from the support plate 3, so that the corner gear 1 9, the corner gear 2 10, the corner gear 3 11 and the corner gear 4 12 are in the same plane to achieve mutual meshing;

Then, the installation angle of the two housings 16 is controlled by rotating the rotating shaft 2, driving the angle of the two cutter discs 17 to change to adjust the ditching angle. After the adjustment is completed, the traction force on the drag rod 15 is released, and the elastic force of the spring 14 is released, so that the angle gear 1 9, the angle gear 2 10 and the angle gear 4 12 are reset to fix the ditching angle.

Grooving: When the shaft 2 rotates, it drives the two cutter discs 17 to rotate. The cutter discs 17 cut the soil during rotation and can throw up the soil using the sheet shape. During the rotation of the cutter discs 17, the crushed soil has a low gravity and is dispersed through the housing 16 by the inertia generated by the cutter discs 17 and scattered outside the groove;

Stone separation: When the cutter head 17 rotates, the rotating column 20 is driven to rotate through the connecting shaft and the power belt 19. At this time, the stone screening frame 21 rotates simultaneously with the rotating column 20. During the rotation process, the curved hook shape design at the end of the stone screening frame 21 can pick up stones and use the inertia generated by the rotation of the stone screening frame 21 to throw the stones onto the bottom cover 34. After the work is completed, the user can pull out the pin 35 to remove the bottom cover 34 to discharge the stones;

Weed and small stone crushing: When the rotating column 20 rotates, the rotating disk 36 is driven to rotate in the opposite direction through the reversing assembly. At the same time, the grass crushing rack 27 is driven by the rotating disk 36. The grass crushing rack 27 crosses the stone screening rack 21 and rotates in the opposite direction. When the grass crushing rack 27 contacts the grass carried by the stone screening rack 21, it is crushed. Smaller stones may not be able to slide to the hook of the stone screening rack 21 due to insufficient inertia. At this time, they are crushed by the grass crushing rack 27 at the same time, thereby improving the farming environment.

The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims (10)

1. The utility model provides an agricultural planting ditcher, includes extension board (3) of installing on organism (1), its characterized in that still includes:

The two ditching parts comprise support posts (8) rotatably mounted on the support plate (3), cutter heads (17) are rotatably mounted on the support posts (8) through sleeve discs II (18), and shells (16) are fixedly mounted on the support posts (8);

The driving part comprises a rotating shaft (2) which is rotatably connected to the support plate (3), a transmission assembly is arranged between the rotating shaft (2) and the two cutterheads (17), and an angle adjusting assembly is arranged between the rotating shaft (2) and the two support posts (8);

Two edulcoration portions, two edulcoration portion is all including fixed mounting branch dish (26) on corresponding casing (16), and all rotate on two branch dish (26) and install carousel (36) and revolving post (20), two all fixed mounting has a plurality of sieve stone frame (21) on revolving post (20), two equal fixed mounting has garrulous grass frame (27) on carousel (36), two garrulous grass frame (27) cooperate with a plurality of sieve stone frame (21) that correspond respectively, two reversing assembly is all installed between carousel (36) and two revolving post (20).

2. An agricultural planting ditcher as claimed in claim 1, wherein the transmission assembly comprises two connecting shafts rotatably connected to the two housings (16), a transmission shaft is connected between the two connecting shafts in a universal manner, the two connecting shafts are fixedly connected with the two cutterheads (17) respectively, a bevel gear set is arranged between the transmission shaft and the rotating shaft (2), and a power belt (19) is arranged between the two connecting shafts and the two rotating posts (20).

3. The agricultural planting ditcher according to claim 1, wherein the angle adjusting assembly comprises a chute (31) formed in a rotating shaft (2), a first corner gear (9) is slidably mounted on the chute (31), a second corner gear (10) and a fourth corner gear (12) are mounted on the supporting columns (8) in a sealing sliding manner respectively, a third corner gear (11) is mounted on the supporting plates (3) in a rotating manner through round rods, the first corner gear (9) is matched with the second corner gear (10) and the third corner gear (11), the third corner gear (11) is matched with the fourth corner gear (12), two air cavities (6) are formed in the supporting plates (3), the two air cavities (6) are matched with the second corner gear (10) and the fourth corner gear (12) respectively, pneumatic mechanisms are mounted on the supporting plates (3), and the pneumatic mechanisms are matched with the first corner gear (9) and the two air cavities (6).

4. A machine as claimed in claim 3, wherein the first (9) and second (10) corner gears have the same diameter, and the ratio of the first (9) and third (11) corner gears has the same diameter as the ratio of the fourth (12) and third (11) corner gears.

5. A machine according to claim 3, characterized in that the pneumatic mechanism comprises two piston boxes (4) fixedly mounted on the side walls of the support plate (3), piston plates (32) are mounted in the two piston boxes (4) in a sealing sliding manner, drag bars (15) are fixedly mounted on the two piston plates (32), air pipes (5) are communicated between the two piston boxes (4) and the two air chambers (6), piston covers (33) in sealing sliding connection with the corresponding drag bars (15) are fixedly mounted at the ports of the two piston boxes (4), a first sleeve disk (13) in rotating connection with the first corner gear (9) is fixedly mounted between the two drag bars (15), and a first spring (14) is mounted between the first sleeve disk (13) and the support plate (3).

6. The agricultural planting ditcher of claim 5, wherein the bottom of the piston box (4) is provided with a one-way exhaust valve (7) at one end far away from the piston cover (33), and the inner diameter of the sleeve disc I (13) is larger than the diameter of the rotating shaft (2).

7. The agricultural planting ditcher of claim 1, wherein the support disc (26) is fixedly provided with a shaft lever (30), the shaft lever (30) is rotationally connected with the rotary column (20) and the rotary disc (36), and the shaft lever (30) is coaxially arranged with the rotary column (20) and the rotary disc (36).

8. An agricultural planting furrowing machine according to claim 7, wherein the reversing assembly comprises a supporting rod fixedly mounted on the side wall of the shaft lever (30), the supporting rod is rotatably provided with a connecting gear (28), one end side wall of the rotating column (20) and the rotating disc (36) close to each other is fixedly provided with a group of mirror image teeth (22), and the two groups of mirror image teeth (22) are respectively meshed with the upper side and the lower side of the connecting gear (28).

9. An agricultural planting ditcher as claimed in claim 1, wherein a plurality of bottom helical teeth (29) are fixedly arranged in the supporting disc (26), each bottom helical tooth (29) is not contacted with the rotary disc (36), a sliding cavity (23) is arranged on the side wall of one end of the stone sieve frame (21) far away from the rotary column (20), and a helical tooth frame (25) matched with the plurality of bottom helical teeth (29) is arranged in the sliding cavity (23) through a second spring (24).

10. An agricultural planting furrower as claimed in claim 1, wherein the length of the stone sieve frame (21) is greater than the length of the grass breaking frame (27), and a bottom cover (34) is mounted at one end of the bottom of the casing (16) far away from the cutterhead (17) through a bolt (35).