A topdressing device

Abstract

This utility model belongs to the field of topdressing technology, specifically relating to a topdressing device. It includes a fertilizer cylinder and a mounting frame. The fertilizer cylinder is mounted on the mounting frame, with a rotating shaft passing through the bottom of the mounting frame. Rollers are mounted on the rotating shaft. A storage tube is installed inside the fertilizer cylinder, and a first discharge component and a second discharge component are provided at the bottom of the storage tube. The first discharge component includes a storage box and a transmission rod. One end of the transmission rod extends out of the fertilizer cylinder, and the other end is hinged to the bottom of the storage box via a connecting rod. A support rod is provided at the bottom of the fertilizer cylinder, and a pointed shovel is installed at the bottom of the cylinder body. A lip plate is rotatably connected to the top of the pointed shovel. A push rod is fixedly connected to the transmission rod. The second discharge component includes a discharging wheel and a transmission component installed in the mounting groove. This invention solves the problems of existing red bean topdressing devices having a single topdressing method, unable to flexibly switch between single-plant precise topdressing and general broadcast topdressing modes, leading to fertilizer waste or low efficiency in large-area topdressing.

Description

Technical Field

[0001] This utility model belongs to the field of topdressing technology, specifically relating to a topdressing device. Background Technology

[0002] Before planting red beans, farmyard manure should be applied to the soil to improve soil fertility, and the soil should be deeply tilled to ensure it is loose and fertile. At the same time, weeds and stones should be removed to create favorable planting conditions. During the initial flowering stage of red beans, appropriate topdressing can promote flower bud differentiation and increase the fruit set rate. Topdressing is usually done using a fertilizer applicator, which can greatly improve work efficiency and results. However, existing red bean fertilizer applicators offer only one application method and cannot flexibly switch between precise topdressing of individual plants and general application, leading to fertilizer waste or low efficiency in large-area topdressing.

[0003] In view of this, the inventor conducted in-depth research on the aforementioned deficiencies in the prior art, which led to the creation of this case. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a topdressing device to solve the problems of existing red bean topdressing devices having a single topdressing method, being unable to flexibly switch between two fertilization modes of single-plant precise topdressing and general topdressing, or causing fertilizer waste or low efficiency of large-area topdressing.

[0005] This utility model solves the above-mentioned technical problems through the following technical means:

[0006] A topdressing device includes a fertilizer cylinder and a mounting frame. The fertilizer cylinder is slidably mounted on the mounting frame. A rotating shaft is passed through the bottom of the mounting frame, and rollers are fixedly mounted at both ends of the rotating shaft. The fertilizer cylinder includes a cylinder body and a cylinder cover, which are connected by threads. A storage tube is fixedly installed inside the cylinder body. A first discharge assembly and a second discharge assembly are arranged side by side at the bottom of the storage tube. The first discharge assembly includes a storage box slidably mounted at the bottom of the storage tube and a transmission rod rotatably mounted at the bottom of the fertilizer cylinder. One end of the transmission rod passes through the fertilizer cylinder, and the other end is hinged to the bottom of the storage box by a connecting rod. A support rod is provided at the bottom of the fertilizer cylinder. The support rod is used to drive the transmission rod to control the discharge and feed of the storage box. A pointed shovel head is fixedly mounted at the bottom of the cylinder body. A lip plate is rotatably connected to the top of the pointed shovel head. A push rod is fixedly connected to the transmission rod. The push rod is used to expand the lip plate when the transmission rod rotates. The second discharge assembly includes a discharge wheel rotatably mounted in the mounting slot and a transmission assembly for driving the discharge wheel in and out of the machine. The transmission assembly is rotatably mounted on the mounting frame and is connected to the discharge wheel via a transmission mechanism.

[0007] Based on the above technical solution, the present invention has made the following improvements:

[0008] Furthermore, the bottom of the storage pipe has a first through groove and an installation groove. The storage box is slidably installed in the first through groove, and the feeding wheel is rotatably installed in the installation groove. The vertical cross-section of the storage box is a parallelogram with a right-high and left-low profile and a central through-hole. Baffles are fixedly installed on opposite sides of the first through groove, and the storage box slides in contact with the baffles. This structural design facilitates material feeding from the storage pipe at the highest point on the right side of the storage box and material discharge when it leaks out at the lowest point on the left side. The baffles facilitate quantitative feeding and prevent material feeding from the right side when the storage box moves down to discharge. The feeding wheel rotates stably in the installation groove and works with the transmission component to quantitatively feed the material. The two are set independently and do not interfere with each other, so that the first and second discharging components can work separately as needed, realizing flexible switching between different fertilizers or different fertilization modes, effectively improving the efficiency and applicability of topdressing operations.

[0009] Furthermore, the support rod includes a hollow rod fixedly installed on the fertilizer cylinder and a sliding rod slidably installed on the hollow rod. The rotating end of the transmission rod has a second through groove, through which the sliding rod passes. A spring connects the sliding rod and the hollow rod. When the support rod touches the ground and is subjected to force, the sliding rod slides inside the hollow rod, causing one end of the transmission rod to tilt upwards, causing the other end, which is hinged to the storage box via a connecting rod, to rotate downwards, thereby pulling the storage box downwards to discharge the material. At this time, the spring is compressed and stores force. Simultaneously, the push rod fixedly installed on the transmission rod pushes open the lip plate, causing the lip plate to rotate outwards and open, forming a fertilizer channel between it and the pointed shovel head. This allows the fertilizer to be applied directly to the soil layer near the roots, avoiding exposure to the surface for volatilization, improving the targeting and effectiveness of topdressing per plant, helping the crop roots absorb nutrients, and promoting balanced plant growth. After fertilization is completed, lift the device. Under the action of spring energy release and gravity of the slide rod, the transmission rod returns to a horizontal state and drives the lip plate to close and the storage box to move upward. This structural design is simple and practical, and quick and convenient to use.

[0010] Furthermore, the transmission assembly includes a first gear, a second gear, a driving wheel, and a driven wheel. The second gear is coaxially mounted on the outside of the fertilizer cylinder with the feeding wheel. The first gear is rotatably mounted on the mounting frame and meshes with the second gear. The driven wheel is coaxially mounted on the mounting frame with the first gear. The driving wheel is rotatably mounted on the rotating shaft, and the driving wheel and the driven wheel are driven by a belt. The rotating shaft is driven by a roller, which in turn drives the driven wheel through the belt. The first gear, coaxial with the driven wheel, rotates accordingly, and the second gear, meshing with the first gear, also rotates, causing the feeding wheel, coaxial with the second gear, to rotate and feed the material. This structural design requires no additional power source; the rotation of the rollers during the device's movement enables the automatic rotation and feeding of the feeding wheel, ensuring continuous topdressing operations and improving fertilization efficiency and automation when applying fertilizer to large areas of crops.

[0011] Furthermore, the outer ring of the cylinder is equipped with a conversion component, which includes a sleeve and a mounting bracket. The sleeve is fitted onto the outer ring of the cylinder and has a sliding groove and a placement groove on it. The sliding groove and the placement groove are connected. A slider is fixedly installed on the outer ring of the fertilizer cylinder, and the slider matches the sliding groove. When the slider is placed on top of the sleeve, rotating the fertilizer cylinder causes the first gear and the second gear to mesh. The rotation of the roller during the movement of the device enables the automatic rotation of the feeding wheel to discharge the material. When the slider slides into the placement groove, the first gear and the second gear disengage. At this time, the first gear of the pulling device rotates freely, and the feeding wheel cannot discharge the material. When the pulling device is moved to the crop that needs topdressing, rotating the fertilizer cylinder presses it down from the sliding groove, which can insert the pointed shovel and the lip plate into the ground. The force on the support rod drives the transmission shaft to tilt up and pull the storage box down to discharge the material. This structural design achieves flexible switching between large-area broadcasting topdressing and single-plant precision topdressing modes by switching the meshing state of the gears, adapting to different farmland topdressing scenarios.

[0012] Furthermore, the distance between the bottom of the sliding rod and the ground in its natural spring state is greater than the distance between the pointed shovel head and the ground. This structural design allows the pointed shovel head and lip plate to enter the soil first when the fertilizer cylinder is pressed down, and then the sliding rod contacts the ground, causing the rotating plate to rotate and drive the pointed shovel head to open in the soil. At the same time, the storage box moves down, and the fertilizer falls from the storage box into the fertilization channel formed between the lip plate and the pointed shovel head, completing the deep application of fertilizer. This avoids the risk of fertilizer directly contacting the crop and burning the seedlings, and improves the effectiveness and safety of fertilization.

[0013] Furthermore, the cap is equipped with a handle; this structural design makes it easy for operators to apply downward pressure to complete the fertilization action of individual plants. At the same time, when switching fertilization modes, the operator can rotate the fertilization cylinder by holding the handle to switch modes. It also makes it easy to push the device in the field when spreading fertilizer, improving the convenience of operation and making field operations more efficient and labor-saving.

[0014] The beneficial effects of this utility model are as follows: By controlling different fertilization modes through the switching components, the first discharge component is a linkage between the support rod, the storage box and the transmission shaft. The sliding rod touches the ground and compresses the spring to drive the transmission shaft to rotate, so that the connecting rod pulls the storage box to discharge a certain amount of fertilizer. At the same time, the lip plate opens to form a fertilization channel, realizing precise deep fertilization of individual red bean plants. The second discharge component is driven by the rotation of the roller through the belt and gear transmission to drive the discharge wheel to spread fertilizer at a uniform speed. The fertilizer falls between the lip plate and the pointed shovel head, forming a general topdressing mode, which is suitable for the large-area topdressing needs of red beans during the flowering and pod-forming stage, reduces fertilizer waste, and improves topdressing efficiency. Attached Figure Description

[0015] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0016] Figure 1 This is a schematic diagram of the structure of a topdressing device in an embodiment of this utility model. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of a topdressing device in an embodiment of this utility model. Figure 2 ;

[0018] Figure 3 This is a schematic diagram of the longitudinal section of a topdressing device according to an embodiment of this utility model;

[0019] Figure 4 yes Figure 3 An enlarged view of point A;

[0020] Among them, 1-fertilizer cylinder, 101-cylinder body, 102-cylinder cover, 2-storage pipe, 201-first through groove, 202-installation groove, 3-first discharge component, 301-storage box, 302-transmission rod, 3021-push rod, 303-baffle, 305-connecting rod, 306-support rod, 3061-hollow rod, 3062-slide rod, 307-second through groove, 308-spring, 4-second discharge component, 41-discharge wheel, 42-second gear, 5-conversion component, 501-sleeve, 5011-slide groove, 5012-placement groove, 502-installation frame, 503-rotating shaft, 504-roller, 505-drive wheel, 506-driven wheel, 507-first gear, 6-slider, 7-pointed shovel head, 8-lip plate, 10-handle. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments:

[0022] like Figures 1 to 4As shown, a topdressing device includes a fertilizer cylinder 1 and a mounting frame 502. The fertilizer cylinder 1 is slidably mounted on the mounting frame 502. A rotating shaft 503 passes through the bottom of the mounting frame 502, and rollers 504 are fixedly mounted at both ends of the rotating shaft 503. The fertilizer cylinder 1 includes a cylinder body 101 and a cylinder cover 102, which are connected by threads. A storage tube 2 is fixedly installed inside the cylinder body 101. A first discharge component 3 and a second discharge component 4 are arranged side by side at the bottom of the storage tube 2. The first discharge component 3 includes a storage box slidably mounted at the bottom of the storage tube 2. A transmission rod 302 is rotatably mounted at the bottom of the fertilizer cylinder 1. One end of the transmission rod 302 extends out of the fertilizer cylinder 1, and the other end is hinged to the bottom of the storage box 301 via a connecting rod 305. A support rod 306 is provided at the bottom of the fertilizer cylinder 1. The support rod 306 is used to drive the transmission rod 302 to control the discharge and feed of the storage box 301. A pointed shovel head 7 is fixedly mounted at the bottom of the cylinder body 101. A lip plate 8 is rotatably connected to the top of the pointed shovel head 7. A push rod 3021 is fixedly connected to the transmission rod 302. The push rod 3021 is used to expand the lip plate 8 when the transmission rod 302 rotates. The second discharge assembly 4 includes a discharge wheel 41 rotatably mounted in the mounting groove 202 and a transmission assembly for driving the discharge wheel 41 to move in and out of the cylinder. The transmission assembly is rotatably mounted on the mounting frame 502 and is connected to the discharge wheel 41.

[0023] Fill the storage pipe 2 with fertilizer, and then tighten the cap 102. When in single-plant precision fertilization mode, the slider 6 on the fertilizer cylinder 1 is placed in the placement groove 5012. At this time, the second gear 42 and the first gear 507 are in a disengaged state. Then, the slider 6 is rotated into the sliding groove 5011, causing the fertilizer cylinder 1 to slide downward. The pointed shovel head 7 and the lip plate 8 are inserted into the ground first, and then the sliding rod 3062 touches the ground and continues to press down. The sliding rod 3062 compresses the spring 308 until it abuts against the top of the hollow rod 3061. The transmission shaft inside the fertilizer cylinder 1 rotates downward, driving the connecting rod 305 to pull the storage box 301 down along the first through groove 201. The top right side of the storage box 301 is blocked by the baffle 303 and cannot be fed in. The left side of the storage box 301 is unblocked and the material is discharged. At the same time, the push rod 3021 on the transmission rod 302 pushes the lip plate 8 to rotate, forming a fertilization channel between the shovel head 7 and the soil. The fertilizer falling out of the storage box 301 falls into the soil through the fertilization channel. After fertilization, lift the fertilizer cylinder 1 upwards along the slide 5011. The rotating plate rotates in the opposite direction, causing the storage box 301 to move upwards. The left side of the storage box 301 is blocked, and the right side receives fertilizer from the storage pipe 2, completing the quantitative fertilization of a single plant. During this process, you can step on the bottom of the mounting frame 502 to prevent the device from moving. Finally, rotate the fertilizer cylinder 1 to make the slider 6 rotate into the placement groove 5012, and then drag the device to the next fertilization point.

[0024] During general topdressing, the slider 6 on the fertilizer cylinder 1 is positioned at the top of the sleeve 501. At this time, the second gear 42 meshes with the first gear 507. Simply tilt the device and pull the handle 10 forward, causing the roller 504 to roll. The drive wheel 505, also mounted on the rotating shaft 503, rolls accordingly, driving the driven wheel 506, which is connected to the drive wheel 505 via a belt, to rotate. This causes the first gear 507, coaxial with the driven wheel 506, to rotate, driving the second gear 42, which meshes with the first gear 507, to rotate. This causes the feeding wheel 41, coaxial with the second gear 42, to rotate, thus performing fertilization. This design, through the conversion component 5, avoids the limitations of a single fertilization method. It can flexibly switch between the needs of precise fertilization for individual plants during the seedling stage of red beans and the needs of rapid topdressing over a large area during the flowering and podding stage, reducing fertilizer waste while improving nutrient supply efficiency and adapting to the agronomic requirements of different growth stages.

[0025] Specifically, the bottom of the storage pipe 2 is provided with a first through groove 201 and an installation groove 202. The storage box 301 is slidably installed in the first through groove 201, and the feeding wheel 41 is rotatably installed in the installation groove 202. The vertical cross section of the storage box 301 is a parallelogram with a right-high and left-low profile and a central through-hole. Baffles 303 are fixedly installed on opposite sides of the first through groove 201, and the storage box 301 slides in contact with the baffles 303. This structural design facilitates the feeding of material from the storage pipe 2 at the highest point on the right side of the storage box 301 and the discharge when the lowest point on the left side leaks out. The baffles 303 facilitate quantitative feeding and prevent material from feeding from the right side when the storage box 301 moves down to discharge. The feeding wheel 41 rotates stably in the installation groove 202 and cooperates with the transmission component to quantitatively feed material. The two are set independently and do not interfere with each other, so that the first and second discharge components 4 can work separately as needed, realizing flexible switching between different fertilizers or different fertilization modes, effectively improving the efficiency and applicability of topdressing operations.

[0026] Specifically, the support rod 306 includes a hollow rod 3061 fixedly mounted on the fertilizer cylinder 1 and a sliding rod 3062 slidably mounted on the hollow rod 3061. A second through groove 307 is provided at the rotating end of the transmission rod 302, through which the sliding rod 3062 passes. A spring 308 connects the sliding rod 3062 and the hollow rod 3061. When the support rod 306 touches the ground and is subjected to force, the sliding rod 3062 slides within the hollow rod 3061, causing one end of the transmission rod 302 to tilt upwards, thus opening the passage... The other end of the connecting rod 305, which is hinged to the storage box 301, rotates downward, thereby pulling the storage box 301 down to discharge the material. At this time, the spring 308 is compressed and stores energy. Simultaneously, the push rod 3021, which is fixedly installed on the transmission rod 302, pushes open the lip plate 8, causing the lip plate 8 to rotate outward and open, forming a fertilization channel between it and the pointed shovel head 7. This allows the fertilizer to be applied directly to the soil layer near the roots, avoiding exposure to the surface for volatilization. This improves the targeting and effectiveness of topdressing per plant, helps the crop roots absorb nutrients, and promotes balanced plant growth. After fertilization is completed, the device is lifted. Under the release of energy from the spring 308 and the gravity of the sliding rod 3062, the transmission rod 302 returns to a horizontal state and drives the lip plate 8 to close, causing the storage box 301 to move upward. This structural design is simple, practical, and quick and convenient to use.

[0027] Specifically, the transmission assembly includes a first gear 507, a second gear 42, a driving wheel 505, and a driven wheel 506. The second gear 42 is coaxially mounted on the outside of the fertilizer cylinder 1 with the feeding wheel 41. The first gear 507 is rotatably mounted on the mounting frame 502 and meshes with the second gear 42. The driven wheel 506 is coaxially mounted on the mounting frame 502 with the first gear 507. The driving wheel 505 is rotatably mounted on the rotating shaft 503, and the driving wheel 505 and the driven wheel 506 are driven by a belt. The rotating shaft 506 is driven by a roller 504. 03 This causes the drive wheel 505 to rotate, which in turn drives the driven wheel 506 via a belt. The first gear 507, which is coaxial with the driven wheel 506, rotates accordingly. The second gear 42, which meshes with the first gear 507, also rotates, causing the feeding wheel 41, which is coaxial with the second gear 42, to rotate and discharge material. This structural design does not require an additional power source. The automatic rotation of the feeding wheel 41 and the discharge of material can be achieved by the rotation of the roller 504 when the device is moving, ensuring that the topdressing operation is carried out continuously. This improves the fertilization efficiency and automation when topdressing crops over a large area.

[0028] Specifically, the outer ring of the cylinder body 101 is provided with a conversion component 5, which includes a sleeve 501 and a mounting bracket 502. The sleeve 501 is fitted onto the outer ring of the cylinder body 101, and the sleeve 501 has a sliding groove 5011 and a placement groove 5012. The sliding groove 5011 communicates with the placement groove 5012. A slider 6 is fixedly installed on the outer ring of the fertilizer cylinder 1, and the slider 6 matches the sliding groove 5011. When the slider 6 is placed on top of the sleeve 501, and the fertilizer cylinder 1 is rotated to make the first gear 507 mesh with the second gear 42, the automatic feeding wheel 41 can be realized by the rotation of the roller 504 when the device is moving. Rotate the feeder; when the slider 6 slides into the placement groove 5012, the first gear 507 and the second gear 42 disengage. At this time, the first gear 507 of the pulling device rotates freely, and the feed wheel 41 cannot discharge material. When the pulling device reaches the crop that needs topdressing, rotate the fertilizer cylinder 1 and press it down from the slide groove 5011. The pointed shovel head 7 and the lip plate 8 can be inserted into the ground. The force on the support rod 306 drives the transmission shaft to tilt up and pull the storage box 301 down to discharge material. This structural design realizes the flexible conversion between large-area topdressing and single-plant precision topdressing modes by switching the meshing state of the gears, which is suitable for different farmland topdressing scenarios.

[0029] Specifically, the bottom of the slide bar 3062 is farther from the ground than the pointed shovel head 7 is in the natural state of the spring 308. This structural design allows the pointed shovel head 7 and the lip plate 8 to enter the soil first when the fertilizer cylinder 1 is pressed down, and then the slide bar 3062 contacts the ground, causing the rotating plate to rotate and drive the pointed shovel head 7 to open in the soil. At the same time, the storage box 301 moves down, and the fertilizer falls from the storage box 301 into the fertilizer application channel formed between the lip plate 8 and the pointed shovel head 7, completing the deep application of fertilizer, avoiding the risk of burning seedlings due to direct contact of fertilizer with crops, and improving the effectiveness and safety of fertilization.

[0030] Specifically, the cap 102 is equipped with a handle 10; this structural design makes it easy for operators to apply downward pressure to complete the single-plant fertilization action. At the same time, when switching fertilization modes, the operator can rotate the fertilization cylinder 1 by holding the handle 10 to complete the mode switching. It also makes it easy to push the device in the field when spreading fertilizer, improving the convenience of operation and making field operations more efficient and labor-saving.

[0031] The method of using this utility model is as follows: fill fertilizer into the storage tube 2, and then tighten the cap 102. When in single-plant precision fertilization mode, the slider 6 on the fertilizer cylinder 1 is placed in the placement groove 5012. At this time, the second gear 42 and the first gear 507 are in a disengaged state. Then, the slider 6 is rotated into the sliding groove 5011, causing the fertilizer cylinder 1 to slide downward. The pointed shovel head 7 and the lip plate 8 first insert into the ground, and then the sliding rod 3062 touches the ground and continues to press down. The sliding rod 3062 compresses the spring 308 until it abuts against the top of the hollow rod 3061. The transmission shaft 302 inside the fertilizer cylinder 1 rotates downward, driving the connecting rod 305 to pull the storage box 301 down along the first through groove 201. The top right side of the storage box 301 is blocked by the baffle 303 and cannot feed material. The left side of the storage box 301 is unblocked and leaks out material. At the same time, the push rod 3021 on the transmission rod 302 pushes the lip plate 8 to rotate, forming a fertilization channel between the shovel head 7 and the soil. The fertilizer falling out of the storage box 301 falls into the soil through the fertilization channel. After fertilization, lift the fertilizer cylinder 1 upwards along the slide 5011. The rotating plate rotates in the opposite direction, causing the storage box 301 to move upwards. The left side of the storage box 301 is blocked, and the right side receives fertilizer from the storage pipe 2, completing the quantitative fertilization of a single plant. During this process, you can step on the bottom of the mounting frame 502 to prevent the device from moving. Finally, rotate the fertilizer cylinder 1 to make the slider 6 rotate into the placement groove 5012, and then drag the device to the next fertilization point.

[0032] When applying topdressing fertilizer, the slider 6 on the fertilizer cylinder 1 is placed on top of the sleeve 501. At this time, the second gear 42 meshes with the first gear 507. Simply tilt the device and pull the handle 10 forward. The roller 504 rolls accordingly, and the drive wheel 505, which is also mounted on the rotating shaft 503, rolls accordingly. This drives the driven wheel 506, which is connected to the drive wheel 505 by a belt, to rotate. This causes the first gear 507, which is coaxial with the driven wheel 506, to rotate. This drives the second gear 42, which meshes with the first gear 507, to rotate. This causes the feeding wheel 41, which is coaxial with the second gear 42, to rotate, thus enabling large-area fertilization.

[0033] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model. Technologies, shapes, and structural parts not described in detail in this utility model are all known technologies.

Claims

1. A topdressing device, characterized in that: The system includes a fertilizer cylinder (1) and a mounting frame (502). The fertilizer cylinder (1) is slidably mounted on the mounting frame (502). A rotating shaft (503) is passed through the bottom of the mounting frame (502). Rollers (504) are fixedly mounted at both ends of the rotating shaft (503). The fertilizer cylinder (1) includes a cylinder body (101) and a cylinder cover (102). The cylinder body (101) and the cylinder cover (102) are connected by threads. A storage tube (2) is fixedly installed inside the cylinder body (101). A first discharge assembly (3) and a second discharge assembly (4) are arranged side by side at the bottom of the storage tube (2). The first discharge assembly (3) includes a storage box (301) slidably mounted at the bottom of the storage tube (2) and a transmission rod (302) rotatably mounted at the bottom of the fertilizer cylinder (1). One end of the transmission rod (302) passes through the fertilizer cylinder (1), and the other end... A connecting rod (305) is hinged to the bottom of the storage box (301). A support rod (306) is provided at the bottom of the fertilizer cylinder (1). The support rod (306) is used to drive the transmission rod (302) to control the discharge and feed of the storage box (301). A pointed shovel head (7) is fixedly installed at the bottom of the cylinder body (101). A lip plate (8) is rotatably connected to the top of the pointed shovel head (7). A push rod (3021) is fixedly connected to the transmission rod (302). The push rod (3021) is used to expand the lip plate (8) when the transmission rod (302) rotates. The second discharge assembly (4) includes a discharge wheel (41) rotatably installed in the mounting groove (202) and a transmission assembly for driving the discharge wheel (41) to enter and exit the material. The transmission assembly is rotatably installed on the mounting frame (502). The transmission assembly is connected to the discharge wheel (41) in a transmission connection.

2. The topdressing device according to claim 1, characterized in that: The bottom of the storage tube (2) is provided with a first through groove (201) and an installation groove (202). The storage box (301) is slidably installed in the first through groove (201). The feeding wheel (41) is rotatably installed in the installation groove (202). The storage box (301) is open. Baffles (303) are fixedly installed on opposite sides of the first through groove (201). The storage box (301) and the baffles (303) are in sliding contact.

3. The topdressing device according to claim 2, characterized in that: The support rod (306) includes a hollow rod (3061) fixedly installed on the fertilizer cylinder (1) and a slide rod (3062) slidably installed on the hollow rod (3061). The rotating end of the transmission rod (302) is provided with a second through groove (307). The slide rod (3062) passes through the second through groove (307). A spring (308) is connected between the slide rod (3062) and the hollow rod (3061).

4. The topdressing device according to claim 3, characterized in that: The transmission assembly includes a first gear (507), a second gear (42), a drive wheel (505), and a driven wheel (506). The second gear (42) is coaxially arranged with the feeding wheel (41) outside the fertilizer cylinder (1). The first gear (507) is rotatably mounted on the mounting frame (502). The first gear (507) and the second gear (42) cooperate with each other. The driven wheel (506) is coaxially arranged with the first gear (507) on the mounting frame (502). The drive wheel (505) is rotatably mounted on the rotating shaft (503). The drive wheel (505) and the driven wheel (506) are driven by a belt.

5. A topdressing device according to claim 4, characterized in that: The outer ring of the cylinder body (101) is provided with a conversion component (5). The conversion component (5) includes a sleeve (501) and a mounting bracket (502). The sleeve (501) is fitted on the outer ring of the cylinder body (101). The sleeve (501) is provided with a sliding groove (5011) and a placement groove (5012). The sliding groove (5011) communicates with the placement groove (5012). A slider (6) is fixedly installed on the outer ring of the fertilizer cylinder (1). The slider (6) matches the sliding groove (5011).

6. A topdressing device according to claim 5, characterized in that: The bottom of the slide bar (3062) is farther from the ground than the tip of the shovel (7) in its natural state when the spring (308) is in its natural state.

7. A topdressing device according to claim 6, characterized in that: The cylinder cover (102) is provided with a handle (10).

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