CN112889428A - Side variable fertilization adjusting device and method for transplanter - Google Patents

Abstract

The invention provides a side variable fertilization adjusting device and an adjusting method for a transplanter, and the device comprises a fixed frame, a driving assembly, a screw rod shaft, a scale adjusting seat, a chute adjusting seat and an angle sensor; both ends of the screw rod shaft are rotatably arranged on the fixed frame; the scale adjusting seat is matched with the screw rod shaft, the lower section of the scale adjusting seat is provided with a side damping seat, the side damping seat is provided with a pin shaft, and the pin shaft is hinged with an angle sensor connecting rod; the lower end of the angle sensor connecting rod is fixed on an angle swing arm; the output end of the angle swing arm is provided with a hinged shaft; the sliding groove adjusting seat is fixed on the fixed frame, one side of the sliding groove adjusting seat is fixed on the fixed frame, and the other side of the sliding groove adjusting seat is provided with a horizontally arranged slotted hole; a mounting seat is fixed on the lower section of the chute adjusting seat; the angle sensor is clamped on the mounting seat, and a hanging hole of the angle sensor is matched with a hinged shaft of the angle swing arm. The invention can automatically adjust the fertilizing amount of the field according to the difference of the fertility of the field condition, has larger storage space of seedlings and is convenient to operate.

Description

Side variable fertilization adjusting device and method for transplanter

Technical Field

The invention belongs to the technical field of agricultural production equipment, and particularly relates to a side variable fertilization adjusting device and an adjusting method for a rice transplanter.

Background

A rice transplanter is an agricultural machine for planting rice seedlings into rice fields. When planting, firstly, a mechanical claw takes out a plurality of rice seedlings from a seedbed and plants the soil in a field, and in order to keep the angle between the seedbed and the ground at a right angle, the front end of the mechanical claw must adopt an elliptic action curve when moving. The motion is completed by a planetary mechanism of a rotary or deformation gear, and the advancing engine can drive the motion machines at the same time. The rice transplanter must have anti-slip wheels and a floating design when moving on the soil. If the seedlings are cut into pieces, the rice seedlings are taken out from a specific seedling box and then planted in a mechanical mode. The rice transplanter generally is provided with a fertilizing mechanism, and can realize fertilizing actions while transplanting rice seedlings, and the fertilizing systems of a plurality of current rice transplanters adopt a thick and wild large-area fertilizing mode, so that fertilizer is wasted, the fertilizing accuracy is low, the fertilizing effect is influenced, and the subsequent rice seedling growth process is further influenced.

Therefore, there is a need in the art for a mechanism for automatically adjusting the amount of fertilizer to be applied, so as to achieve accurate control of the amount of fertilizer to be applied and to save labor cost.

Disclosure of Invention

The invention aims to provide a side variable fertilization adjusting device and an adjusting method for a transplanter, which can automatically adjust the fertilization amount of a field according to different field conditions and fertility so as to achieve the purpose of increasing yield and increment efficiently. In order to achieve the purpose, the invention adopts the following technical scheme:

a side-mounted variable fertilization adjusting device for a rice transplanter comprises:

the driving assembly is fixed on a fixing frame, and the output end of the driving assembly is connected with the screw shaft; both ends of the screw rod shaft are rotatably arranged on the fixed frame;

the scale adjusting seat comprises a sleeve with an internal thread, the sleeve is matched with the screw shaft, a side damping seat is arranged at the lower section of the scale adjusting seat, a pin shaft is arranged on the side damping seat, and an angle sensor connecting rod is hinged to the pin shaft; the lower end of the angle sensor connecting rod is fixed on an angle swing arm; the output end of the angle swing arm is provided with a hinged shaft;

the sliding groove adjusting seat is fixed on the fixed frame and comprises an accommodating space for accommodating the scale adjusting seat, one side surface of the sliding groove adjusting seat is fixed on the fixed frame, a horizontally arranged slotted hole is formed in one side surface, away from the fixed frame, of the sliding groove adjusting seat, and the slotted hole is matched with the side damping seat; a mounting seat is fixed on the lower section of one side surface of the sliding groove adjusting seat, which is far away from the fixed frame;

the angle sensor is clamped on the mounting seat, and the mounting seat is fixed on the sliding groove adjusting seat; the mounting seat is positioned on the outer side surface of the sliding groove adjusting seat; the hanging hole of the angle sensor is matched with the hinged shaft of the angle swing arm; the mounting seat and the angle swing arm are positioned on different sides of the fixed frame.

Preferably, the chute adjusting seat comprises an inner adjusting plate and an outer adjusting plate, a vertical section of the inner adjusting plate is arranged close to the fixing frame, a horizontal section of the inner adjusting plate extends towards the outer adjusting plate, and a horizontal section of the inner adjusting plate is fixed on the fixing frame; the tail end of the inner adjusting plate is fixed on the outer adjusting plate; the inner adjusting plate and the outer adjusting plate enclose an accommodating space for accommodating the scale adjusting seat, and one side of the inner adjusting plate is fixed on the fixing frame.

Preferably, the scale adjusting seat further comprises a scale bar, the scale bar is fixed on the sleeve, a hook is formed at the tail end of the scale bar, and the hook is arranged on the horizontal section of the fixing frame.

Preferably, the driving assembly comprises a fertilizer application motor fixed on the fixed frame, an output end of the fertilizer application motor is provided with a driving gear, the driving gear is meshed with a driven gear, and the driven gear is arranged at one end of the screw shaft.

A method for adjusting variable fertilization for a transplanter is based on a side variable fertilization adjusting device for the transplanter and comprises the following steps:

step 1: the field data measuring part transmits field information to the control part in real time, and the control part outputs the rotating speed to the fertilizing motor;

step 2: the fertilizer application motor is started, a driving gear on the fertilizer application motor drives a driven gear to rotate, the driven gear drives a screw rod shaft to rotate, the scale adjusting seat moves along the screw rod shaft, the angle sensor connecting rod drives the angle swinging arm to swing up and down, and the angle swinging arm drives the angle sensor to swing up and down; the angle sensor feeds back the swing angle information data to the control part;

and step 3: the control part acquires fertilizing amount information data and feeds the fertilizing amount information data back to a power source at the fertilizing power transmission assembly, and then the rotating speed of the fertilizing shaft is controlled, and finally fertilizing variable adjustment is achieved.

Compared with the prior art, the invention has the advantages that:

(1) the field data measuring part is arranged in the front wheel of the transplanter and is used for monitoring the information data of the field such as the fertility, the soil temperature and the like and feeding the information data back to the control part, and the control part acquires the fertilization parameters needing variable fertilization and then transmits the information to the fertilization motor; the fertilizing motor drives the screw rod shaft to rotate, the scale adjusting seat moves on the screw rod shaft, the scale adjusting seat drives the pin shaft and the angle sensor connecting rod to move left and right along the groove hole in the chute adjusting seat, the angle sensor connecting rod drives the angle swinging arm to swing up and down, and the angle swinging arm drives the angle sensor to swing up and down. Therefore, along with the swinging, the angle sensor feeds back the swinging angle information data to the control part, the control part calculates the corresponding relation between the swinging angle information and the standard fertilization reference, and the control part feeds back the fertilization amount information data to the power source, so as to control the rotating speed of the fertilization shaft and finally realize the fertilization variable adjustment.

(2) The adjusting device is arranged on two sides of the transplanter body, the space position of the rear side of the transplanter body can be larger due to the arrangement, more seedlings can be placed on the transplanter body more conveniently, the operation space is enlarged, and operators can place the seedlings more conveniently after standing on the rear side of the transplanter.

Drawings

Fig. 1 is a perspective view of a side variable rate fertilization adjusting device for a rice transplanter according to a first embodiment of the invention;

FIG. 2 is a further perspective view of FIG. 1;

FIG. 3 is a schematic view of the installation of the side-mounted variable fertilizing adjusting device and the fertilizing gear assembly for the rice transplanter according to the first embodiment of the invention;

FIG. 4 is a partial schematic view of FIG. 3;

FIG. 5 is a perspective view of the alternate orientation of FIG. 3;

FIG. 6 is a partial schematic view of FIG. 5;

FIG. 7 is a schematic view of the connection between the side-mounted variable fertilizing adjusting device and the fertilizing power transmission assembly for the rice transplanter;

fig. 8 is a perspective view of the fertilization power transmission assembly;

FIG. 9 is a partial schematic view of FIG. 8;

FIG. 10 is a schematic view of the connection of the ball head link and the swing link shaft of FIG. 8;

fig. 11 is a schematic view of fig. 8 taken along direction a.

Wherein, 1-a fixed frame, 2-a driving component, 21-a fertilizing motor, 3-a screw shaft, 4-a scale adjusting seat, 5-a chute adjusting seat, 6-a pin shaft, 7-an angle sensor connecting rod, 8-an angle swinging arm, 9-an angle sensor, 10-a mounting seat, 11-a side damping seat, 12-a middle damping seat, 13-a height swinging arm, 14-a connecting plate, 15-a fertilizing power transmission component, 151-a right-angle ball head, 152-a direct connecting rod, 153-a swinging transmission shaft, 154-a bearing seat, 155-a U-shaped seat, 156-a ball head connecting rod, 157-a local swinging arm, 16-a fertilizing gear component, 161-a fertilizing shaft, 162-a bearing component, 17-a transition connecting rod and 18-a fertilizing fan component, 19-fertilization rolling box, 20-fertilization box body.

Detailed Description

The present invention will now be described in more detail with reference to the accompanying schematic drawings, in which preferred embodiments of the invention are shown, it being understood that one skilled in the art may modify the invention herein described while still achieving the advantageous effects of the invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.

As shown in FIGS. 1 to 11, the embodiment discloses a side variable rate fertilization adjusting device for a rice transplanter

A side variable rate fertilization adjusting device for a rice transplanter is shown in figures 1-4 and comprises a fixed frame 1, a driving assembly 2, a screw rod shaft 3, a scale adjusting seat 4, a chute adjusting seat 5, an angle sensor connecting rod 7, an angle swinging arm 8, an installation seat 10 and an angle sensor 9. The device comprises a fixed frame 1, a driving component 2, a screw shaft 3, a scale adjusting seat 4, a chute adjusting seat 5, an angle sensor connecting rod 7, an angle swing arm 8, a mounting seat 10 and an angle sensor 9, wherein the angle sensor 9 is used for realizing angle measurement, and then a control part, a field data measuring part and a motor assembly are matched to finally realize fertilization amount adjustment;

the driving assembly 2 is fixed on the fixing frame 1, and the output end of the driving assembly 2 is connected with the screw shaft 3; both ends of the screw shaft 3 are rotatably mounted to the fixed frame 1 through bearing blocks 154. In this embodiment, the driving assembly 2 includes a fertilizer application motor 21 fixed to the fixing frame 1, and the output end of the fertilizer application motor 21 is provided with a driving gear engaged with a driven gear mounted at one end of the screw shaft 3.

The scale adjusting seat 4 comprises a sleeve with an internal thread, the sleeve is matched with the screw rod shaft 3 to move left and right on the screw rod shaft 3, a side damping seat 11 is arranged on the lower section of the scale adjusting seat 4, a pin shaft 6 is arranged on the side damping seat 11, and an angle sensor connecting rod 7 is hinged to the pin shaft 6; the lower end of the angle sensor connecting rod 7 is fixed on an angle swing arm 8; the output end of the angle swing arm 8 is provided with a hinged shaft. Preferably, the scale adjusting seat 4 further comprises a scale bar fixed on the sleeve, the tail end of the scale bar forms a hook, and the hook is hung on the horizontal section of the fixing frame 1.

The chute adjusting seat 5 is fixed on the fixed frame 1 (the fixed frame 1 is fixed on the transplanter body), so the chute adjusting seat 5 is always kept still. The chute adjusting seat 5 comprises an inner adjusting plate and an outer adjusting plate, wherein the vertical section of the inner adjusting plate is arranged close to the fixing frame 1, the horizontal section of the inner adjusting plate extends towards the outer adjusting plate, and the horizontal section of the inner adjusting plate is fixed on the fixing frame 1; the tail end of the inner adjusting plate is fixed on the outer adjusting plate. The inner adjusting plate and the outer adjusting plate enclose an accommodating space for accommodating the scale adjusting seat 4, a horizontally arranged slotted hole is formed in the outer adjusting plate, the slotted hole is a through groove and is matched with the side damping seat 11, and the scale adjusting seat 4, the pin shaft 6, the side nylon seat and the middle nylon seat can be transversely adjusted and moved together in the slotted hole of the sliding groove adjusting seat 5; the lower section of the outer adjusting plate is fixed with a mounting seat 10.

The angle sensor 9 is clamped on the mounting seat 10, and the mounting seat 10 is fixed on the sliding groove adjusting seat 5; the mounting seat 10 is positioned on the outer side surface of the sliding chute adjusting seat 5; a hanging hole of the angle sensor 9 is matched with a hinged shaft of the angle swing arm 8; the mounting 10 and the angular swing arm 8 are located on different sides of the fixed frame 1.

The fertilizing gear assembly 16 comprises a fertilizing shaft 161 and a driving gear. Specifically, the fertilizing shaft 161 is horizontally arranged and rotatably mounted at the bottom of a fertilizing rolling box 19 through a bearing; the fertilizing shaft 161 is provided with a driving gear and a bearing component 162; a fertilization rolling component is rotatably arranged in the fertilization rolling box 19; the output end of the fertilization rolling component extends out of the fertilization rolling box 19 and is meshed with a driving gear on the fertilization shaft 161, one end of the fertilization shaft 161 is connected with a power source, and the power source can be a motor. Wherein, fertilization rolls subassembly, fertilization and rolls the structure of case 19 and be prior art, as follows: the fertilization box body 20 is communicated with the fertilization rolling box 19, granular fertilizer is filled in the fertilization box body 20 and the upper box body of the fertilization rolling box 19 and used for fertilization operation, the fertilizer is acted into the box body of the fertilization rolling box 19 through gravity, and the fertilization rolling component rotates the fertilizer to the lower part (inside) of the fertilization rolling box 19. In addition, fertilization fan subassembly 18 communicates with fertilization roll box 19 through the blast pipe, also belongs to prior art above.

The variable fertilization principle is as follows:

the side variable rate fertilization adjusting device, the fertilization rolling box 19 and the fertilization gear assembly 16 are matched for use so as to realize variable rate fertilization.

(1) The field data measuring part is arranged in the front wheel of the transplanter and used for monitoring the information data of the field such as the fertility and the soil temperature and feeding the information data back to the control part, and the control part acquires the fertilization parameters needing variable fertilization and then transmits the information to the fertilization motor 21.

(2) The driving gear on the fertilizing motor 21 drives the driven gear to rotate so as to drive the screw shaft 3 to rotate, the scale adjusting seat 4 moves left and right on the screw shaft 3, the scale adjusting seat 4 moves left and right to drive the pin shaft 6 and the angle sensor connecting rod 7 to move left and right along the groove hole in the chute adjusting seat 5, the angle sensor connecting rod 7 drives the angle swinging arm 8 to swing up and down, and the angle swinging arm 8 drives the angle sensor 9 to swing up and down. Therefore, along with the swinging, the angle sensor 9 feeds back the swinging angle information data to the control part, the control part calculates the corresponding relation between the swinging angle information and the standard fertilization reference, and the control part feeds back the fertilization amount information data to the power source, so as to control the rotating speed of the fertilization shaft 161 and finally realize the fertilization variable adjustment.

On the basis of the scheme, the height swing arm 13, the fertilizing power transmission component 15 and the transition connecting rod 17 are further arranged, and meanwhile, a power source connected with the fertilizing shaft 161 is removed, and the power source is replaced by the fertilizing power transmission component 15, the transition connecting rod 17 and a motor assembly. Wherein, fertilization power transmission assembly 15 and fertilization gear assembly 16 all set up and two horizontal directions mutually perpendicular horizontally.

The variable quantity for the transplanter can transmit the fertilizing power (fertilizer overturning power) to the fertilizing gear assembly 16 from the fertilizing power transmission assembly 15, and finally realizes the fertilizing amount adjustment.

The input end of the side-mounted variable fertilization adjusting device for the transplanter is connected with a fertilization power transmission assembly 15, and the output end of the side-mounted variable fertilization adjusting device is connected with a fertilization gear assembly 16. The fertilizing power transmission assembly 15 is used for driving the height swing arm 13 of the side variable fertilizing adjusting device for the rice transplanter to swing up and down, and the fertilizing gear assembly 16 is used for overturning granular fertilizer in the fertilizing box body into a fertilizing pipe fitting.

The high swing arm 13 is used for connecting the fertilization power transmission assembly 15 and the fertilization gear assembly 16, and the high swing arm 13 is matched with the transition connecting rod 17 to realize that fertilization power (fertilizer overturning power) is transmitted to the fertilization gear assembly from the fertilization power transmission assembly 15.

A height swing arm 13 is arranged in the accommodating space, and the height swing arm 13 is arranged in parallel to the screw shaft 3; one section of the height swing arm 13 extends out of the chute adjusting seat 5 and is hinged with the fertilization power transmission assembly 15; the height swing arm 13 extends out of one section of the chute adjusting seat 5 and is hinged with a connecting plate 14 between one side surface (an outer adjusting plate) of the chute adjusting seat 5; the height swing arm 13 passes through a U-shaped groove formed in the upper (lower) section of the scale adjusting seat 4, so that the height swing arm 13 can swing up and down in the U-shaped groove; a middle damping seat 12 is fixed on the inner wall of the U-shaped groove, a middle groove hole extending in the horizontal direction is formed in the height swing arm 13, and the middle damping seat 12 is matched with the middle groove hole; the section of the height swing arm 13 far away from the fertilization power transmission assembly 15 is hinged with a transition connecting rod 17, and the upper end of the transition connecting rod 17 is hinged with a fertilization gear assembly 16.

The fertigation gear assembly 16 further comprises a bearing assembly 162, the bearing assembly 162 being mounted on the fertigation shaft 161, the bearing assembly 162 being connected to the transition link 17.

The fertilization power transmission assembly 15 comprises a right-angle ball head 151, a direct connecting rod 152, a swinging transmission shaft 153, a bearing seat 154, a U-shaped seat 155, a ball head connecting rod 156 and a local swinging arm 157. Specifically, the swing transmission shaft 153 is horizontally arranged, and the swing transmission shaft 153 is mounted on a rack through a bearing; the partial swing arm 157 is fixed at one end of the swing transmission shaft 153, and the other end, far away from the swing transmission shaft 153, of the partial swing arm 157 is hinged to a straight connecting rod 152; the swing transmission shaft 153 is hinged with the output end of a gearbox, and the input end of the gearbox is connected with a motor assembly (power source); the upper end of the straight connecting rod 152 is hinged to the height swing arm 13.

Preferably, the transmission device is arranged at the lower side of a pedal W at the rear side of the transplanter body along the width direction of the transplanter body, two ends of the swinging transmission shaft 153 are respectively connected with a side variable fertilizing and adjusting device for the transplanter, and the lower end of the swinging transmission shaft is connected with a power output E of a gearbox. The swing transmission shaft 153 is transversely installed on the rack through a bearing seat 154, a groove-shaped connecting plate 14 is arranged towards the rear side of the machine body of the swing transmission shaft 153, the groove-shaped connecting plate 14 is connected with and provided with a U-shaped seat 155, the U-shaped seat 155 is provided with and provided with a ball head connecting rod 156 towards the lower side of the machine body, a right-angle ball head 151 is arranged at the lower end of the ball head connecting rod 156, and the right-angle ball head 151; two ends of the swing transmission shaft 153 are provided with local swing arms 157, a direct connecting rod 152 is arranged between two upper and lower right-angle ball heads 151 at two ends of the swing transmission shaft 153, the lower right-angle ball head 151 is connected to the local swing arm 157, and the upper right-angle ball head 151 is hinged to a height swing arm 13 of the side variable fertilization adjusting device for the transplanter.

The variable fertilization principle is as follows:

(1) the field data measuring part is arranged in the front wheel of the transplanter and used for monitoring the information data of the field such as the fertility and the soil temperature and feeding the information data back to the control part, and the control part acquires the fertilization parameters needing variable fertilization and then transmits the information to the fertilization motor 21.

(2) The driving gear on the fertilizing motor 21 drives the driven gear to rotate so as to drive the screw shaft 3 to rotate, the scale adjusting seat 4 moves left and right on the screw shaft 3, the scale adjusting seat 4 moves left and right to drive the pin shaft 6 and the angle sensor connecting rod 7 to move left and right along the groove hole in the chute adjusting seat 5, the angle sensor connecting rod 7 drives the angle swinging arm 8 to swing up and down, and the angle swinging arm 8 drives the angle sensor 9 to swing up and down. Therefore, along with the swinging, the angle sensor 9 feeds back the swinging angle information data to the control part, the control part calculates the corresponding relation between the swinging angle information and the standard fertilization reference, and the control part feeds back the fertilization amount information data to the motor assembly connected with the fertilization power transmission component 15, so as to control the rotation speed of the fertilization shaft 161 and further realize the automatic variable fertilization. Wherein, the process that the output power of the motor assembly is transmitted to the fertilizing shaft 161 is as follows: the motor assembly transmits power to the fertilization power transmission assembly 15 through the gearbox, the swing transmission shaft 153 rotates to drive the transition connecting rod 17 to swing, the transition connecting rod 17 drives the bearing assembly 162 to rotate, the bearing assembly 162 drives the fertilization shaft 161 to rotate, the fertilization shaft 161 drives the driving gear on the fertilization shaft 161 to rotate, and the driving gear on the fertilization shaft 161 drives the gear on the fertilization rolling assembly to rotate. Namely the rotation speed of the fertilizing shaft 161, determines the fertilizing amount of the fertilizer.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (5)

1. A side-mounted variable fertilization adjusting device for a rice transplanter is characterized by comprising:

the driving assembly is fixed on a fixing frame, and the output end of the driving assembly is connected with the screw shaft; both ends of the screw rod shaft are rotatably arranged on the fixed frame;

the scale adjusting seat comprises a sleeve with an internal thread, the sleeve is matched with the screw shaft, a side damping seat is arranged at the lower section of the scale adjusting seat, a pin shaft is arranged on the side damping seat, and an angle sensor connecting rod is hinged to the pin shaft; the lower end of the angle sensor connecting rod is fixed on an angle swing arm; the output end of the angle swing arm is provided with a hinged shaft;

the sliding groove adjusting seat is fixed on the fixed frame and comprises an accommodating space for accommodating the scale adjusting seat, one side surface of the sliding groove adjusting seat is fixed on the fixed frame, a horizontally arranged slotted hole is formed in one side surface, away from the fixed frame, of the sliding groove adjusting seat, and the slotted hole is matched with the side damping seat; a mounting seat is fixed on the lower section of one side surface of the sliding groove adjusting seat, which is far away from the fixed frame;

the angle sensor is clamped on the mounting seat, and the mounting seat is fixed on the sliding groove adjusting seat; the mounting seat is positioned on the outer side surface of the sliding groove adjusting seat; the hanging hole of the angle sensor is matched with the hinged shaft of the angle swing arm; the mounting seat and the angle swing arm are positioned on different sides of the fixed frame.

2. The side-mounted variable fertilizing adjusting device for the rice transplanter as claimed in claim 1, wherein the chute adjusting seat comprises an inner adjusting plate and an outer adjusting plate, the vertical section of the inner adjusting plate is arranged close to the fixing frame, the horizontal section of the inner adjusting plate extends towards the outer adjusting plate, and the horizontal section of the inner adjusting plate is fixed to the fixing frame; the tail end of the inner adjusting plate is fixed on the outer adjusting plate; the inner adjusting plate and the outer adjusting plate enclose an accommodating space for accommodating the scale adjusting seat, and one side of the inner adjusting plate is fixed on the fixing frame.

3. The side-mounted variable fertilizing adjusting device for the rice transplanter as claimed in claim 2, wherein the scale adjusting base further comprises a scale strip, the scale strip is fixed on the sleeve, a hook is formed at the tail end of the scale strip, and the hook is hooked on the horizontal section of the fixing frame.

4. The side-mounted variable fertilizing adjusting device for the rice transplanter as claimed in claim 1, wherein the driving assembly comprises a fertilizing motor fixed on the fixing frame, the output end of the fertilizing motor is provided with a driving gear, the driving gear is meshed with a driven gear, and the driven gear is arranged at one end of the screw shaft.

5. A method for adjusting variable rate fertilization for a transplanter, which is based on the side variable rate fertilization adjusting device for the transplanter of any one of claims 3 to 4, and is characterized by comprising the following steps:

step 1: the field data measuring part transmits field information to the control part in real time, and the control part outputs the rotating speed to the fertilizing motor;

step 2: the fertilizer application motor is started, a driving gear on the fertilizer application motor drives a driven gear to rotate, the driven gear drives a screw rod shaft to rotate, the scale adjusting seat moves along the screw rod shaft, the angle sensor connecting rod drives the angle swinging arm to swing up and down, and the angle swinging arm drives the angle sensor to swing up and down; the angle sensor feeds back the swing angle information data to the control part;

and step 3: the control part acquires fertilizing amount information data and feeds the fertilizing amount information data back to a power source at the fertilizing power transmission assembly, and then the rotating speed of the fertilizing shaft is controlled, and finally fertilizing variable adjustment is achieved.

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