Straw covering interlaced subsoiling topdressing machine for corn planting

Abstract

The invention relates to the technical field of corn planting, in particular to a straw covering interlaced subsoiling topdressing machine for corn planting, which comprises an advancing mechanism, a plurality of air pumps are fixedly mounted in an inner cavity of the advancing mechanism at equal intervals, and a fixing pipe is fixedly mounted at the output end of each air pump; a corrugated pipe is arranged on the side, away from the corresponding air pump, of each fixed pipe, a movable pipe is arranged on the side, away from the corresponding fixed pipe, of each corrugated pipe, the left side and the right side of the output end of each movable pipe communicate with two symmetrical sleeves, and a slope block is slidably arranged in an inner cavity of each sleeve; when the device is used for topdressing, sprayed fertilizer particles can be uniformly distributed on inclined planes on two sides of a V-shaped groove by virtue of a swinging discharge end pipeline; meanwhile, special treatment is carried out when spraying is carried out on the top areas of the two sides of the V-shaped groove, so that fertilizer particles can also be uniformly distributed in the relatively dry areas of the tops of the two sides of the V-shaped groove.

Description

Technical Field

[0001] This invention relates to the field of corn planting technology, specifically a corn planting straw mulching and deep loosening topdressing machine. Background Technology

[0002] The existing corn planting straw mulching and deep tillage topdressing machine first plows V-shaped grooves into the ground with a deep tillage shovel. This step aims to loosen the soil and create space for fertilizer. Then, the operator spreads fertilizer granules into the V-shaped grooves. These granules are mostly compound fertilizers or organic fertilizers, with small particle sizes for easy absorption. Next, the plowed soil is covered back onto the V-shaped grooves using a mechanical device to ensure that the fertilizer is completely buried to prevent volatilization or loss. Finally, after the soil covering is completed, straw is evenly spread on the soil surface to keep it warm, retain moisture, and suppress weeds. However, during the fertilizer granule dispersal stage, due to the bottom shape of the V-shaped trough and the effect of gravity, the granules tend to gather in the center of the trough bottom, forming a dense accumulation. When the subsequent covering operation is completed, moisture or dew in the soil easily penetrates the accumulation area, causing the fertilizer granules to absorb water and stick together, gradually agglomerating into larger hard lumps. This agglomeration not only hinders the natural dissolution and movement of fertilizer granules in the soil, but also slows down the natural dissolution process of nutrients into the surrounding soil, thereby reducing fertilizer utilization efficiency to a certain extent and affecting the root absorption and overall growth effect of corn crops. To address this, the present invention provides a straw mulching and deep loosening topdressing machine for corn planting. Summary of the Invention

[0003] The purpose of this invention is to provide a straw mulching and deep loosening topdressing machine for corn planting, so as to solve the problems mentioned in the background art.

[0004] The technical solution of this invention is: a straw mulching and deep tillage topdressing machine for corn planting, comprising a traveling mechanism, wherein a plurality of air pumps are fixedly installed at equal intervals in the inner cavity of the traveling mechanism, a fixed pipe is fixedly installed at the output end of each air pump, a corrugated pipe is provided on the side of each fixed pipe away from the corresponding air pump, a movable pipe is provided on the side of each corrugated pipe away from the corresponding fixed pipe, two symmetrical sleeves are connected to the left and right sides of the output end of each movable pipe, an inclined block is slidably arranged in the inner cavity of each sleeve, and two symmetrical baffles are welded on the sidewalls at both ends of each movable pipe. When performing topdressing operations, the device, with the oscillating discharge end pipe, enables the sprayed fertilizer particles to be evenly distributed on the inclined surfaces on both sides of the V-shaped groove; at the same time, when spraying the top areas on both sides of the V-shaped groove, special treatment is performed so that the fertilizer particles can also be evenly distributed in the relatively dry areas on both sides of the V-shaped groove; in addition, during the topdressing process, the device can also treat fertilizer particles that have clumped due to moisture, further promoting the natural dissolution of fertilizer particles.

[0005] Preferably, a support rod is welded to the wall of each fixed tube, and an installation ring is welded to the side of each support rod away from the corresponding fixed tube. Two symmetrical rotating shafts are rotatably connected to the upper and lower ends of the inner cavity of each installation ring, and several movable tubes are rotatably connected between the corresponding two rotating shafts.

[0006] Preferably, each of the mounting rings is fixedly mounted with an electric telescopic rod on its sidewall, and each electric telescopic rod has a mounting block fixedly mounted at its telescopic end. Each mounting block has a rack welded to its sidewall. Several rotating shafts are fixedly fitted with gears, and several racks mesh with corresponding gears. When the air pump operates, the feeding mechanism continuously transports fertilizer granules from the storage hopper to the fixed pipe. The high-speed airflow output by the air pump carries the fertilizer granules from the fixed pipe into the corrugated pipe and finally discharges them through the movable pipe, allowing the fertilizer granules to pass through the corrugated pipe. The material possesses significant kinetic energy during discharge, causing the fertilizer particles to "fly out" like bullets, embedding them into the surface of the moist soil and preventing them from rolling. Simultaneously, the electric telescopic rod drives the mounting plate and rack to move back and forth, the rack drives the gear and shaft to rotate back and forth, and the shaft drives the movable tube to swing back and forth. This ensures that the fertilizer particles "sprayed out" from the movable tube are evenly dispersed on the moist slopes on both sides of the "V-shaped groove," preventing them from concentrating in one place and affecting subsequent natural dissolution.

[0007] Preferably, each inclined block has a T-shaped plate welded to the side away from the inner cavity of the corresponding movable tube, and each sleeve has two symmetrical vertical blocks welded to its upper and lower ends. A return spring is connected to the side wall of each T-shaped plate, and several return springs are respectively connected between the side wall of the corresponding T-shaped plate and the side wall of the corresponding vertical block. When the movable tube "swings" to one end, the T-shaped plate is "obstructed" by the corresponding baffle and pushes the inclined block to slide towards the inner cavity of the movable tube, causing the inclined block to block half of the area near the top of the "V-groove" of the movable tube's "outlet," thereby reducing the swing... Fertilizer granules "sprayed" from the movable tube at the end are less likely to scatter outside the "V-shaped groove," thus avoiding waste. In addition, some fertilizer granules can be "retained" in the "angled area" formed by the inner wall of the sleeve and the inclined surface of the inclined block. When the movable tube "swings" to one end, the inclined block pushes out the fertilizer granules "retained" in this area, causing a surge in the number of fertilizer granules "sprayed" from the movable tube. This increases the probability that the fertilizer granules will embed into the drying area at the top of the inclined surface of the "V-shaped groove," thereby improving the uniformity of fertilizer granule distribution to some extent.

[0008] Preferably, several arc-shaped rods are welded at equal intervals between the two end sidewalls of the inner cavity of each mounting ring; two symmetrical movable plates are slidably disposed on the wall of each movable tube; a vertical rod is welded to each movable plate; several push rods are welded at equal intervals on the body of each vertical rod; a protrusion is welded to the top of each vertical rod; a return spring is connected between each vertical rod and the corresponding wall of the movable tube; and two corrugated plates are welded between the two end sidewalls of the inner cavity of each mounting ring. During the swinging process of the movable tube, the movable plates, vertical rods, protrusions, and push rods will swing synchronously with the movable tube. When some fertilizer granules in the storage silo clump together due to moisture, they are "blocked" by two adjacent arc-shaped rods when passing through the movable tube. During the swinging of the movable tube, the inner wall of the movable tube pushes the "blocked" clumps to move and position them between the arc-shaped rods and the corresponding push rods. As the movable tube and the protrusions swing synchronously, the protrusions are affected by the corrugated plate and move back and forth, which in turn causes the protrusions to drive the vertical rods and push rods to move back and forth synchronously. The push rods in the reciprocating motion "squeeze" the clumps, causing them to break up and thus allowing them to dissolve naturally in the soil more effectively.

[0009] Preferably, each of the fixed tubes is provided with a feeding mechanism at its top, and each feeding mechanism is connected to a storage bin at its top.

[0010] Preferably, a number of deep loosening shovels are welded at equal intervals to the bottom of the traveling mechanism, and a number of soil covering inclined plates are welded at equal intervals to the side wall of the traveling mechanism.

[0011] This invention provides an improved corn planting straw mulching and deep tillage topdressing machine, which has the following improvements and advantages compared with the prior art: 1. The high-speed airflow output by the air pump carries the fertilizer particles in the fixed pipe into the corrugated pipe and finally out through the movable pipe, so that the fertilizer particles have great kinetic energy when "discharging", thus making the fertilizer particles achieve an effect similar to "bullet flying out", so that they embed into the surface of the moist soil layer. 2. The rotating shaft drives the movable tube to swing back and forth, so that the fertilizer particles "sprayed out" by the movable tube can be evenly dispersed on the wetted slopes on both sides of the "V-shaped groove", avoiding them from concentrating in one place and affecting the subsequent natural dissolution operation. 3. When the movable tube "swings" to one end, the T-shaped plate is "obstructed" by the corresponding baffle and pushes the inclined block to slide towards the inner cavity of the movable tube. This causes the inclined block to block half of the area near the top of the "V-shaped groove" of the movable tube's "outlet". This makes it less likely for the fertilizer particles "sprayed" out by the movable tube that has swung to the end to fall outside the "V-shaped groove", thus avoiding waste of fertilizer particles. 4. A portion of fertilizer particles can be retained in the "angled area" formed by the inner wall of the sleeve and the inclined surface of the inclined block. When the movable tube "swings" to one end, the inclined block pushes out the fertilizer particles "retained" in this area, causing a surge in the number of fertilizer particles "sprayed" out by the movable tube at this time. This makes it more likely that the fertilizer particles will be embedded in the drying area at the top of the "V-shaped groove" inclined surface, which improves the uniformity of fertilizer particle distribution to a certain extent. 5. The push rod in reciprocating motion "squeezes" the agglomerated particles, causing them to break down and thus allowing them to dissolve more naturally in the soil. 6. Because the fertilizer particles are evenly distributed along the slope of the "V-shaped groove", the fertilizer particles in the "V-shaped groove" after covering with soil also exhibit a uniform distribution in the vertical direction. This further promotes the natural dissolution of the fertilizer particles. In summary, when performing topdressing operations, this device, with its oscillating discharge pipe, ensures that the sprayed fertilizer granules are evenly distributed on the inclined surfaces of both sides of the V-shaped trough. Simultaneously, special treatment is applied to the top areas on both sides of the V-shaped trough during spraying, ensuring that the fertilizer granules are also evenly distributed in the relatively dry areas at the top of the V-shaped trough. Furthermore, during topdressing, the device can also treat fertilizer granules that have clumped due to moisture, further promoting the natural dissolution of the fertilizer granules. Attached Figure Description

[0012] The present invention will be further explained below with reference to the accompanying drawings and embodiments: Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the deep loosening shovel structure of the present invention; Figure 3 This is a schematic diagram of the fixed tube structure of the present invention; Figure 4 This is a schematic diagram of the internal structure of the mounting ring of the present invention; Figure 5 This is a schematic diagram of the active tube structure of the present invention; Figure 6 This is the present invention. Figure 5 Enlarged schematic diagram of part A; Figure 7 This is a schematic diagram of the internal structure of the active tube of the present invention; Figure 8 This is the present invention. Figure 7 Enlarged schematic diagram of section B structure; Figure 9 This is the present invention. Figure 7 An enlarged schematic diagram of the C-section structure.

[0013] Explanation of reference numerals in the attached figures: 1. Traveling mechanism; 2. Air pump; 3. Fixed pipe; 4. Corrugated pipe; 5. Movable pipe; 6. Sleeve; 7. Inclined block; 8. Support rod; 9. Mounting ring; 10. Rotating shaft; 11. Electric telescopic rod; 12. Mounting block; 13. Rack; 14. Gear; 15. T-shaped plate; 16. Vertical block; 17. Return spring one; 18. Arc rod; 19. Movable plate; 20. Vertical rod; 21. Push rod; 22. Protrusion; 23. Return spring two; 24. Corrugated plate; 25. Feeding mechanism; 26. Storage bin; 27. Deep loosening shovel; 28. Soil covering inclined plate; 29. ​​Baffle. Detailed Implementation

[0014] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] This invention provides an improved corn planting straw mulching and deep tillage topdressing machine. The technical solution of this invention is as follows: like Figures 1-9 As shown, a deep tillage and topdressing machine for corn planting with straw mulching includes a traveling mechanism 1. Several deep tillage shovels 27 are welded at equal intervals to the bottom of the traveling mechanism 1. Several soil-covering inclined plates 28 are welded at equal intervals to the side wall of the traveling mechanism 1. Several air pumps 2 are fixedly installed at equal intervals inside the traveling mechanism 1. A fixed pipe 3 is fixedly installed at the output end of each air pump 2. A feeding mechanism 25 is provided at the top of each fixed pipe 3. A storage bin 26 is connected to the top of each feeding mechanism 25. A corrugated pipe 4 is provided on the side of each fixed pipe 3 away from the corresponding air pump 2. A movable pipe 5 is provided on the side of each corrugated pipe 4 away from the corresponding fixed pipe 3. The output end of each movable pipe 5... The device has two symmetrical sleeves 6 connected to both sides. Each sleeve 6 has a slidably mounted inclined block 7 inside. Each movable tube 5 has two symmetrical baffles 29 welded to the side walls at both ends. When performing topdressing, the device uses the swingable discharge pipe to ensure that the sprayed fertilizer particles are evenly distributed on the inclined surfaces on both sides of the V-shaped groove. At the same time, special treatment is applied to the top areas on both sides of the V-shaped groove when spraying, so that the fertilizer particles can also be evenly distributed in the relatively dry areas on both sides of the V-shaped groove. In addition, during the topdressing process, the device can also treat fertilizer particles that have clumped due to moisture, further promoting the natural dissolution of fertilizer particles.

[0016] Furthermore, each fixed pipe 3 has a support rod 8 welded to its wall, and each support rod 8 has an installation ring 9 welded to its side away from the corresponding fixed pipe 3. Each installation ring 9 has two symmetrical rotating shafts 10 rotatably connected to its inner cavity at both ends, and several movable pipes 5 are rotatably connected between the corresponding two rotating shafts 10. Each installation ring 9 has an electric telescopic rod 11 fixedly installed on its side wall, and each electric telescopic rod 11 has an installation block 12 fixedly installed at its telescopic end. Each installation block 12 has a rack 13 welded to its side wall. Several rotating shafts 10 have gears 14 fixedly fitted onto their shafts, and several racks 13 mesh with corresponding gears 14. When the air pump 2 operates, the feeding mechanism 25 continuously transports the fertilizer granules in the storage bin 26 to the solid... The high-speed airflow output from the fixed pipe 3 and the air pump 2 carries the fertilizer particles inside the fixed pipe 3 into the corrugated pipe 4 and finally out through the movable pipe 5. This gives the fertilizer particles a large kinetic energy when they are "discharged," making them "bullet-like" and embedding them into the surface of the moist soil, thus preventing them from rolling. At the same time, the electric telescopic rod 11 drives the mounting plate and rack 13 to move back and forth. The rack 13 drives the gear 14 and the rotating shaft 10 to rotate back and forth. The rotating shaft 10 drives the movable pipe 5 to swing back and forth, so that the fertilizer particles "sprayed out" from the movable pipe 5 can be evenly dispersed on the moist slopes on both sides of the "V-shaped groove," preventing them from concentrating in one place and affecting the subsequent natural dissolution operation.

[0017] Furthermore, a T-shaped plate 15 is welded to the side of each inclined block 7 away from the inner cavity of the corresponding movable tube 5, and two symmetrical vertical blocks 16 are welded to the upper and lower ends of each sleeve 6. A return spring 17 is connected to the side wall of each T-shaped plate 15, and several return springs 17 are respectively connected between the side wall of the corresponding T-shaped plate 15 and the side wall of the corresponding vertical block 16. When the movable tube 5 "swings" to one end, the T-shaped plate 15 is "obstructed" by the corresponding baffle 29 and pushes the inclined block 7 to slide towards the inner cavity of the movable tube 5, so that the inclined block 7 covers half of the area of ​​the "outlet" of the movable tube 5 near the top of the "V-shaped groove". The shielding design prevents fertilizer particles from being scattered outside the "V-shaped groove" when the movable tube 5 swings to the end, thus avoiding waste. In addition, some fertilizer particles can be retained in the "angled area" formed by the inner wall of the sleeve 6 and the inclined surface of the inclined block 7. When the movable tube 5 swings to one end, the inclined block 7 pushes out the fertilizer particles retained in this area, causing a surge in the number of fertilizer particles sprayed out by the movable tube 5. This increases the probability that the fertilizer particles will be embedded in the drying area at the top of the inclined surface of the "V-shaped groove", which improves the uniformity of fertilizer particle distribution to a certain extent.

[0018] Furthermore, several arc-shaped rods 18 are welded at equal intervals between the two end sidewalls of the inner cavity of each mounting ring 9. Two symmetrical movable plates 19 are slidably arranged on the wall of each movable tube 5. A vertical rod 20 is welded on each movable plate 19. Several push rods 21 are welded at equal intervals on the body of each vertical rod 20. A protrusion 22 is welded to the top of each vertical rod 20. A return spring 23 is connected between each vertical rod 20 and the corresponding wall of the movable tube 5. Two corrugated plates 24 are welded between the two end sidewalls of the inner cavity of each mounting ring 9. During the swinging process of the movable tube 5, the movable plates 19, vertical rods 20, protrusions 22 and push rods 21 will swing synchronously with the movable tube 5. When some fertilizer granules in the storage bin 26 clump together due to moisture, they are "blocked" by two adjacent arc-shaped rods 18 when passing through the movable tube 5. During the swinging process of the movable tube 5, the inner wall of the movable tube 5 pushes the clumped granules that have been "blocked" to move and displace them between the arc-shaped rods 18 and the corresponding push rods 21. As the movable tube 5 and the protrusion 22 swing synchronously, the protrusion 22 is affected by the corrugated plate 24 and moves back and forth, which in turn causes the protrusion 22 to drive the vertical rod 20 and the push rod 21 to move back and forth synchronously. The push rod 21 in the reciprocating motion "squeezes" the clumped granules, causing them to break up, and thus allowing them to better dissolve naturally in the soil.

[0019] Working principle: Before use, the traveling mechanism 1 is fixedly connected to the tail of the agricultural machine using rivet locking parts. During use, the agricultural machine drives the traveling mechanism 1 to move, which in turn drives the deep loosening shovel 27 to move, plowing out "V-shaped grooves" on the ground. At this time, the air pump 2 operates, and the feeding mechanism 25 continuously transports the fertilizer granules in the storage bin 26 to the fixed pipe 3. The high-speed airflow output by the air pump 2 carries the fertilizer granules in the fixed pipe 3 into the corrugated pipe 4 and finally discharges them through the movable pipe 5. This gives the fertilizer granules a large kinetic energy when "discharging," resulting in a "bullet-like" effect where the fertilizer granules embed themselves into the surface of the moist soil layer, thus preventing them from being crushed. Rolling occurs; simultaneously, the electric telescopic rod 11 drives the mounting plate and rack 13 to reciprocate, the rack 13 drives the gear 14 and rotating shaft 10 to reciprocate, and the rotating shaft 10 drives the movable tube 5 to swing back and forth, so that the fertilizer particles "sprayed" out by the movable tube 5 can be evenly dispersed on both sides of the wetted slope of the "V-shaped groove", avoiding them from concentrating in one place and affecting the subsequent natural dissolution operation; in addition, when the movable tube 5 "swings" to one end, the T-shaped plate 15 is "obstructed" by the corresponding baffle 29 and pushes the inclined block 7 to slide towards the inner cavity of the movable tube 5, so that the inclined block 7 blocks half of the area of ​​the "outlet" of the movable tube 5 near the top of the "V-shaped groove", thereby making the swing to the end The fertilizer granules "sprayed" from the movable tube 5 are less likely to scatter outside the "V-shaped groove," thus avoiding waste. Furthermore, a portion of the fertilizer granules can be "retained" in the "angled area" formed by the inner wall of the sleeve 6 and the inclined surface of the inclined block 7. When the movable tube 5 "swings" to one end, the inclined block 7 pushes out the "retained" fertilizer granules in this area, causing a surge in the number of fertilizer granules "sprayed" from the movable tube 5. This increases the probability that the fertilizer granules will embed into the drying area at the top of the inclined surface of the "V-shaped groove," thereby improving the uniformity of fertilizer granule distribution. During the swinging process of the movable tube 5, the movable plate 19, vertical rod 20, protrusion 22, and push rod 21 follow the movable tube 5. When fertilizer granules in the storage bin 26 clump together due to moisture, they are blocked by two adjacent arc rods 18 when passing through the movable tube 5. During the swing of the movable tube 5, the inner wall of the movable tube 5 pushes the clumped granules that have been blocked to move and position them between the arc rods 18 and the corresponding push rods 21. As the movable tube 5 and the protrusion 22 swing synchronously, the protrusion 22 is affected by the corrugated plate 24 and moves back and forth. This causes the protrusion 22 to drive the vertical rod 20 and the push rod 21 to move back and forth synchronously. The push rod 21 in the reciprocating motion "squeezes" the clumped granules, causing them to break up and thus allowing them to dissolve naturally in the soil. After the material is dispersed, the set soil covering slope 28 then covers the soil plowed out on both sides of the "V-shaped groove" back into the "V-shaped groove", completing the soil covering operation. In particular, since the fertilizer particles are evenly distributed along the slope of the "V-shaped groove", the fertilizer particles in the "V-shaped groove" after soil covering also exhibit a uniform distribution in the vertical direction. This further promotes the natural dissolution of fertilizer particles.

[0020] The foregoing description enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not 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. A straw mulching and deep tillage topdressing machine for corn planting, comprising a traveling mechanism (1), characterized in that: The traveling mechanism (1) has several air pumps (2) fixedly installed at equal intervals in its inner cavity. Each air pump (2) has a fixed pipe (3) fixedly installed at its output end. Each fixed pipe (3) has a corrugated pipe (4) on the side away from the corresponding air pump (2). Each corrugated pipe (4) has a movable pipe (5) on the side away from the corresponding fixed pipe (3). Each movable pipe (5) has two symmetrical sleeves (6) connected to the left and right sides of its output end. Each sleeve (6) has a slidably arranged inclined block (7) in its inner cavity. Each movable pipe (5) has two symmetrical baffles (29) welded to the side walls at both ends.

2. The corn planting straw mulching and inter-row deep tillage and topdressing machine according to claim 1, characterized in that: Each of the fixed tubes (3) has a support rod (8) welded on its wall. Each support rod (8) has an installation ring (9) welded on the side away from the corresponding fixed tube (3). The upper and lower ends of the inner cavity of each installation ring (9) are rotatably connected to two symmetrical rotating shafts (10), and several movable tubes (5) are rotatably connected between the corresponding two rotating shafts (10).

3. A straw mulching and deep tillage topdressing machine for corn planting according to claim 2, characterized in that: An electric telescopic rod (11) is fixedly installed on the side wall of each of the mounting rings (9), and an installation block (12) is fixedly installed on the telescopic end of each of the electric telescopic rods (11). A rack (13) is welded to the side wall of each of the mounting blocks (12). A gear (14) is fixedly sleeved on the shaft of several of the rotating shafts (10), and several racks (13) mesh with the corresponding gears (14).

4. The corn planting straw mulching and inter-row deep tillage and topdressing machine according to claim 1, characterized in that: Each inclined block (7) has a T-shaped plate (15) welded to the side away from the inner cavity of the corresponding movable tube (5). Each sleeve (6) has two symmetrical vertical blocks (16) welded to its upper and lower ends. Each T-shaped plate (15) has a reset spring (17) connected to its side wall. Several reset springs (17) are connected between the side wall of the corresponding T-shaped plate (15) and the side wall of the corresponding vertical block (16).

5. A straw mulching and deep tillage topdressing machine for corn planting according to claim 2, characterized in that: Several arc-shaped rods (18) are welded at equal intervals between the two side walls of the inner cavity of each mounting ring (9). Two symmetrical movable plates (19) are slidably arranged on the wall of each movable tube (5). A vertical rod (20) is welded on each movable plate (19). Several push rods (21) are welded at equal intervals on the body of each vertical rod (20). A protrusion (22) is welded to the top of each vertical rod (20). A reset spring (23) is connected between each vertical rod (20) and the wall of the corresponding movable tube (5). Two corrugated plates (24) are welded between the two side walls of the inner cavity of each mounting ring (9).

6. A straw mulching and deep tillage topdressing machine for corn planting according to claim 1, characterized in that: Each of the fixed tubes (3) is provided with a feeding mechanism (25) at the top, and each feeding mechanism (25) is connected to a storage bin (26) at the top.

7. A straw mulching and deep tillage topdressing machine for corn planting according to claim 1, characterized in that: The bottom of the traveling mechanism (1) is welded with several deep loosening shovels (27) at equal intervals, and the side wall of the traveling mechanism (1) is welded with several soil covering inclined plates (28) at equal intervals.

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