Walking type automatic uniform fertilizing device

Abstract

The invention discloses a hand-held automatic uniform fertilization device, which relates to the technical field of agricultural machinery, and comprises a moving mechanism used for supporting and driving the whole device to walk; the fertilizer box is arranged on the moving mechanism and is used for storing a fertilizer; the soil cutting and discharging mechanism is arranged on the moving mechanism, is positioned below the fertilizer box and is used for forming a concave part on the ground and discharging the fertilizer in the fertilizer box into the concave part; and the soil covering mechanism is arranged on the soil cutting and discharging mechanism and is used for filling and leveling up the concave part in which the fertilizer is discharged. According to the device, through cooperative operation of the pit digging and discharging mechanism, the soil covering mechanism and the moving mechanism, whole-process automation from pit digging, fertilization to soil covering is achieved, and a traditional manual fertilization mode is thoroughly replaced. Through motor driving and mechanical structure control, the fertilizer applying amount, the fertilizer applying depth and point position distribution can be accurately controlled, and the problems of uneven fertilizer applying, local composting or insufficient nutrients and the like caused by manual hand feeling differences are effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, specifically to a hand-held automatic uniform fertilization device. Background Technology

[0002] In current agricultural planting, horticultural maintenance, and greenhouse operations, regular fertilization is a crucial step in ensuring healthy crop growth and increasing yield per unit area. For large, open farmland, large mechanized fertilizer spreaders are now widely used. However, for areas with more complex terrain, higher planting density, or limited operating space (such as hilly orchards, nurseries, and vegetable greenhouses), lightweight auxiliary tools are more commonly used. Existing such tools are mostly simple backpack or hand-push structures, designed to solve the problem of long-distance fertilizer transport, allowing the fertilization process to be completed within relatively narrow rows.

[0003] However, existing small- and medium-sized fertilization operations still have significant shortcomings in practical application. The current fertilization process is mainly based on manual labor. This highly manual method is not only extremely labor-intensive and inefficient, but also makes it very difficult to ensure uniform fertilizer distribution because the amount and distribution of fertilizer are entirely controlled by manual feel or experience. This often leads to localized fertilizer accumulation causing "seedling burn," or insufficient nutrients in some areas affecting growth, resulting in fertilizer waste and environmental pollution. Furthermore, long-term repetitive manual operations can easily cause chronic damage to the lumbar spine and arms of the workers. Summary of the Invention

[0004] The purpose of this invention is to provide a hand-held automatic uniform fertilization device, which solves the problem that the current fertilization process is mainly based on manual labor.

[0005] The present invention solves the above-mentioned technical problems through the following technical solutions, the present invention comprising: The moving mechanism is used to support and drive the entire device to move. A fertilizer bin, mounted on the moving mechanism, is used to store fertilizer; A soil excavation and material discharge mechanism, mounted on the moving mechanism and located below the fertilizer tank, is used to form a recess in the ground and discharge fertilizer from the fertilizer tank into the recess; and A soil-filling mechanism, installed on the soil-excavating and material-discharging mechanism, is used to fill the depression where fertilizer is discharged.

[0006] Preferably, the moving mechanism includes a connecting frame, with a drive wheel driven by a travel motor mounted at the front of the connecting frame, and a control armrest and support wheels at the rear of the connecting frame.

[0007] Preferably, the excavation and material discharge mechanism includes: Mounting plate, mounted on the moving mechanism; A flip motor is mounted on the mounting plate; The telescopic sleeve structure has its upper end connected to the output end of the flipping motor. The upper end of the telescopic sleeve structure is connected to the fertilizer box through a hose and is driven by the flipping motor to flip at an angle. A tapered head, fixed to the lower end of the telescopic sleeve structure, is inserted into the ground to form a recess, on which a discharge hole communicating with the telescopic sleeve structure is provided; and The material control component is located inside the telescopic sleeve structure and is used to control the opening and closing of the fertilizer flow channel.

[0008] Preferably, the telescopic sleeve structure includes an outer tube and an inner tube sleeved inside the outer tube and capable of axial sliding; The material control assembly includes multiple elastic flaps arranged in a ring shape inside the outer tube, and a pull rope connecting the elastic flaps to the inner tube. The opening and closing of the elastic flap is controlled by driving the inner tube to slide relative to the outer tube and pulling the rope.

[0009] Preferably, the soil-covering mechanism includes: A rotating seat is rotatably and adjustablely mounted on the outer tube; The flap is rotatably mounted on the rotating base via a rotating shaft; A torsion spring, acting on the pivot, provides torque to the flap to bring its lower end toward the ground; and A locking element is used to lock the flap in the position where it is lifted off the ground.

[0010] Preferably, the lower end of the flap is provided with a rubber block for gathering soil towards the center, and the lower end of the flap is also provided with multiple elastic strips that can adapt to the undulations of the ground.

[0011] Preferably, it also includes an angle adjustment mechanism for adjusting the lateral tilt angle of the excavation and material discharge mechanism; The angle adjustment mechanism includes a radial block mounted on a rotating shaft of a mounting plate, a flip block hinged to the radial block, a locking hole on the flip block, a circular block fixed to the lower side of the connecting frame, and multiple locking blocks selectively engaging with the locking holes on the circumferential surface of the circular block.

[0012] Preferably, it also includes a telescopic rod for driving the inner tube to slide, the telescopic rod being installed outside the outer tube, and its telescopic end being connected to the inner tube.

[0013] Preferably, the excavation and material discharge mechanism is configured to perform at least one of the following operating modes: Pit fertilization mode: The reversing motor drives the telescopic sleeve structure and the conical head to flip and insert into the pit to form a pit. Then, the material control component is opened to discharge fertilizer into the pit. Trench fertilization mode: The conical head is kept inserted into the ground by the telescopic sleeve structure, and a groove is continuously formed during the movement of the device. At the same time, the material control component is kept open to continuously discharge fertilizer into the trench.

[0014] Preferably, the locking element includes a fixing ring fixed to the rotating seat, a mounting inner hole opened on the rotating shaft, a spring and a limiting head disposed in the mounting inner hole, and a through hole opened on the fixing ring; The spring drives the limiting head to extend out of the mounting inner hole and engage with the through hole to limit the rotation of the shaft; The rear and front sides of the mounting plate are respectively fixed with a stop block and a stop rod by a first vertical rod and a second vertical rod. The stop block is used to contact and push the flap upward to the locked position when the telescopic sleeve structure flips backward. The stop rod is used to press against the limiting head of the locking member when the telescopic sleeve structure returns to the center position, so that it is released from the lock and the flap is released.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This device achieves full automation from pit opening and fertilization to soil covering through the coordinated operation of the pit-digging and material-discharging mechanism, the soil-covering mechanism, and the moving mechanism, completely replacing the traditional manual fertilization method. Driven by a motor and controlled by a mechanical structure, it can precisely control the amount of fertilizer applied, the depth of application, and the distribution of application points, effectively avoiding problems such as uneven fertilization, localized composting, or insufficient nutrients caused by differences in human touch. It significantly improves the uniformity of fertilization and the consistency of operations, making it particularly suitable for horticultural, greenhouse, and orchard planting scenarios with fixed row spacing and high requirements for fertilization location.

[0016] This device features a hand-held design with a lightweight and compact overall structure. The drive and support wheels work together to ensure stable movement, and the control handle integrates a control switch for easy single-person operation and steering. Compared to large fertilization machinery, this device can maneuver flexibly in confined spaces such as narrow rows, hilly slopes, and greenhouses, achieving precise row-to-row fertilization. The angle adjustment mechanism allows for lateral adjustment of the fertilization position to meet the agronomical requirements of different planting spacings, significantly expanding its applicable scenarios and filling the gap in the use of existing mechanized fertilization equipment in complex terrain.

[0017] Through the coordinated control of the flipping motor, telescopic pole, and material control components, this device can switch between two modes with a single button: pit fertilization (spot application) and trench fertilization (strip application). The pit fertilization mode is suitable for operations requiring localized, concentrated fertilization, such as transplanting and topdressing; the trench fertilization mode is suitable for operations requiring continuous, strip fertilization, such as ridging and ditching. Both modes can automatically complete the entire process of ditching, fertilization, and soil covering, making it a multi-purpose machine that effectively improves equipment utilization and economy, and meets the differentiated fertilization management requirements of different crops and different growth stages.

[0018] The soil-covering mechanism and the pit-digging and material-discharging mechanism are mechanically linked to automatically perform the soil-covering action after fertilization in pits or trenches. Its unique flipping plate, rubber blocks, and elastic strip structure effectively gather and compact the soil placed on both sides during excavation, ensuring that the fertilizer is fully covered and reducing fertilizer volatilization and loss due to sun exposure or rain erosion. This automated soil-covering function not only improves operational integrity but also helps maintain soil moisture and increase fertilizer utilization, aligning with the concepts of green, efficient, and precision agriculture.

[0019] In this device, the lifting, locking, and releasing actions of the soil-covering mechanism are all triggered by purely mechanical structures such as abutments, rods, and spring locking components, requiring no additional sensors or electronic control intervention. This design significantly reduces the system's electrical complexity and power consumption, improving its reliability and durability in harsh environments such as dusty and damp fields. Simultaneously, the rapid mechanical response and accurate movements ensure a seamless connection between fertilization and soil-covering, further guaranteeing consistent operational quality. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 for Figure 1 A three-dimensional structural diagram of the mid-angle adjustment mechanism and the soil-covering mechanism; Figure 3 for Figure 2 Schematic diagram of the main sectional view of the inner and outer tubes and the conical head; Figure 4 A schematic diagram of the first three-dimensional structure of the soil-covering mechanism; Figure 5 This is a schematic diagram of the second three-dimensional structure of the soil-covering mechanism; Figure 6 for Figure 4 A schematic diagram of the planar structure of the locking component; Figure 7 A schematic diagram of a soil excavation and material dispensing mechanism for digging pits and applying fertilizer. Figure 8 A schematic diagram of a trenching and fertilization mechanism for excavating soil and discharging materials. The numbers in the diagram represent: 11-Connecting frame; 12-Drive wheel; 13-Travel motor; 14-Control handle; 15-Support wheel; 2-Fertilizer box; 3-Digging and discharging mechanism; 31-Mounting plate; 32-Tilting motor; 33-Outer tube; 34-Conical head; 341-Discharging hole; 35-Inner tube; 36-Telescopic pole; 37-Elastic flap; 38-Pull rope; 4-Angle adjustment mechanism; 41-Circular block; 42-Clamping block; 43-Radial block; 44-Tilting block; 45-Clamping hole; 5-Soil covering mechanism; 51-Flip plate; 511-Elastic strip; 52-Abutting block; 53-Abutting rod; 54-Rotating seat; 55-Torsion spring; 56-Locking component; 561-Fixing ring; 562-Through hole; 563-Spring; 564-Limiting head; 57-Rubber block. Detailed Implementation

[0021] The above-mentioned and other technical features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings.

[0022] Example 1 This embodiment provides a technical solution: a hand-held automatic uniform fertilization device, such as... Figure 1 , Figure 2 , Figure 3 , Figure 7 as well as Figure 8 As shown, the device includes a moving mechanism and a fertilizer box 2, a soil excavation and dispensing mechanism 3, and a soil covering mechanism 5 integrated on the moving mechanism. The fertilizer box 2 is used to store fertilizer, and the soil excavation and dispensing mechanism 3 and the soil covering mechanism 5 are both located below the fertilizer box 2. The soil excavation and dispensing mechanism 3 is used to dig a pit or groove in the ground and discharge the fertilizer in the fertilizer box 2 into the pit or groove. The soil covering mechanism 5 fills the pit or groove, thereby realizing automatic fertilization.

[0023] The moving mechanism 1, serving as the load-bearing and power input unit of the entire machine, mainly consists of a connecting frame 11, a drive wheel 12, a travel motor 13, a control handle 14, and a support wheel 15. The connecting frame 11 is located in the middle of the device, and the drive wheel 12 is mounted at the front of the connecting frame 11. The drive wheel 12 is driven to rotate by the travel motor 13, thus serving as the power source for the device's forward movement. The outer periphery of the drive wheel 12 has gripping teeth to increase adhesion to the cultivated ground, ensuring stable rotational torque during manual propulsion. The control handle 14 is fixedly mounted at the rear end of the connecting frame 11 and extends upwards at an angle. Its end has a handle for easy gripping, and the handle has a switch for controlling the operation of the travel motor 13, allowing operators to easily control the device's movement and speed. A support wheel 15 is located below the rear of the connecting frame 11. This support wheel 15 cooperates with the front drive wheel 12 to form a multi-point support structure, ensuring the longitudinal stability of the device during fertilization operations. Meanwhile, the width of the support wheel 15 is greater than the fertilization trajectory, increasing the balance of the device. In other embodiments, two support wheels 15 can be provided to further ensure the balance of the device and prevent tilting. The fertilizer box 2 is located in the middle of the connecting frame 11, while the soil excavation and discharging mechanism 3 and the soil covering mechanism 5 are both located below the fertilizer box 2. When the operator pushes the device forward by manipulating the handle 14, the drive wheel 12 rotates accordingly, thereby performing the fertilization operation.

[0024] It should be noted that a battery and controller (not shown in the figure) are also provided on the connecting frame 11 to provide power and control to the various electrical appliances of this device.

[0025] The excavation and material discharge mechanism 3 includes an installation plate 31 installed below the connecting frame 11. A flipping motor 32 is installed on one side of the installation plate 31. An outer tube 33 is fixed to the output end of the flipping motor 32. The upper end of the outer tube 33 is connected to the bottom of the fertilizer box 2 through a hose, so that the fertilizer in the fertilizer box 2 flows into the outer tube 33 through the hose. An inner tube 35 that can slide axially is sleeved inside the outer tube 33. The two form a telescopic sleeve structure. The flipping motor 32 is used to drive the telescopic sleeve structure to flip at an angle.

[0026] A telescopic pole 36 is provided outside the outer tube 33. The telescopic end of the telescopic pole 36 is connected to the inner tube 35. The extension or retraction of the telescopic pole 36 drives the inner tube 35 to move up and down in the inner cavity of the outer tube 33, thereby adjusting the total length of the telescopic sleeve structure.

[0027] A conical head 34 is fixed at the bottom of the outer tube 33. A discharge hole 341 communicating with the pipeline is opened on one side of the conical head 34. It should be noted that the cross-section of the conical head 34 is conical, and the forward direction of this device is set at an acute angle, which makes it easy to break up soil clods and dig pits or trenches. In addition, the lower end of the inner tube 35 is designed with an inclination, so that the forward direction of the conical head 34 is a sharp angle close to the forward direction of this device, which makes it easier to break up the soil. The discharge hole 341 is located in the forward direction of the conical head 34 away from the forward direction of this device.

[0028] Multiple ring-shaped elastic flaps 37 are arranged inside the outer tube 33. These flaps converge towards the center in their natural state, blocking the fertilizer channel. Each elastic flap 37 is connected to a pull rope 38, the other end of which is fixed to the upper end of the inner tube 35. The opening and closing state of the elastic flaps 37 is controlled by the tension of the pull rope 38 through the axial displacement of the inner tube 35 relative to the outer tube 33.

[0029] The extension or retraction of the telescopic pole 36 causes the inner tube 35 to move up and down within the inner cavity of the outer tube 33, resulting in four positions for the inner tube 35 within the inner cavity of the outer tube 33, from top to bottom: position one, position two, position three, and position four. When the inner tube 35 is in the first position, the pull rope 38 is in an upward taut state. The lower side of the elastic flap 37 is pulled outward and flipped by the pull rope 38. The middle part of the multiple elastic flaps 37 opens a gap, so that the fertilizer in the outer tube 33 flows downward through the gap to realize the discharge of fertilizer, which is the upper discharge position. When the inner tube 35 is in the second position, the pull rope 38 is in a relaxed state, and the multiple elastic valves 37 are closed, which can prevent the fertilizer in the outer tube 33 from flowing downward. At this time, the cone head 34 is higher than the position for digging holes and fertilizing, which is the idle position. When the inner tube 35 is in the third position, the pull rope 38 is in a relaxed state, and the multiple elastic valves 37 are closed, which can prevent the fertilizer in the outer tube 33 from flowing downward. At this time, the cone head 34 is the position for digging holes and applying fertilizer, which is the digging position. When the inner tube 35 is in the fourth position, the pull rope 38 is pulled downward and taut. The lower side of the elastic flap 37 is pulled outward and flipped by the pull rope 38. The middle part of the multiple elastic flaps 37 opens a gap, so that the fertilizer in the outer tube 33 flows downward through the gap to realize the discharge of fertilizer, which is the lower feed position.

[0030] Furthermore, the fourth position can be adjusted slightly. The lower the position of the inner tube 35, the greater the range of rotation of the lower side of the elastic flap 37 pulled outward by the pull rope 38, and the greater the rate of fertilizer discharge. At this time, the lower the position of the cone head 34, the deeper the groove is, which can hold the discharged fertilizer.

[0031] The opening and closing states of multiple elastic blocks 37 are precisely locked with the gear position of the inner tube 35, achieving mechanical hard synchronization between the material feeding action and the depth of digging pits / grooves. This completely avoids problems such as fertilizer spillage, leakage, or blockage caused by electrical control delays or malfunctions, ensuring the accuracy of fertilizer application and the reliability of the operation process from the root.

[0032] By coordinating the flipping motor 32 and the telescopic pole 36, two different fertilization operation modes can be achieved: (1) Pit fertilization mode (spot application), such as Figure 7 As shown: Digging action: Before digging the hole for fertilization, the telescopic sleeve structure is driven to tilt by the flipping motor 32 and tilted to the rear side. The telescopic pole 36 drives the inner tube 35 to move to the third position. When the device moves to the predetermined fertilization point, the flipping motor 32 starts, drives the telescopic sleeve structure to flip downward and forcibly insert it into the ground through an arc trajectory. The physical shape of the cone head 34 is used to squeeze out a pit in the soil, and the original soil is squeezed to both sides of the pit. Discharge action: After the pit is dug, the telescopic pole 36 drives the inner tube 35 to move to the first position. At this time, the pull rope 38 connected to the top of the inner tube 35 is instantly tightened, which in turn pulls multiple elastic petals 37 to overcome their own elasticity and unfold outward, so that the fertilizer channel is opened. The fertilizer falls through the gaps between the elastic petals 37 and is finally accurately discharged into the pit through the discharge hole 341 on the side of the cone head 34. Reset and close: After fertilization, the telescopic pole 36 drives the inner tube 35 to move to the second position, the pull rope 38 loosens, and the elastic valve 37 rebounds inward to close again by its own elasticity, realizing the "switch" function of cutting off the flow of fertilizer. Since the position of the cone head 34 is higher than the position when digging the pit at this time, it can prevent the cone head 34 from bringing the fertilizer out of the pit.

[0033] (2) Trench fertilization method (strip application), such as Figure 8 As shown: Adjust the flipping motor 32 to keep the conical head 34 vertically downward or tilted forward, and drive the inner tube 35 to the fourth position by the telescopic pole 36, extending the conical head 34 to insert into the ground. At this time, the fertilizer falls through the gap of the elastic flap 37. With the forward movement of the moving mechanism 1, the conical head 34 continuously scratches grooves on the ground. Since the elastic flap 37 remains open, the fertilizer will be continuously discharged into the newly dug grooves as the device moves, thereby completing the uniform strip fertilization operation.

[0034] Example 2 This embodiment is a further optimization based on Embodiment 1. The parts that are the same as those described above will not be repeated here. Figure 2 , Figure 4 , Figure 5 as well as Figure 6 As shown, to further better realize the present invention, the following configuration is specifically adopted: The soil-covering mechanism 5 is mounted on the outer pipe 33 and includes a rotating seat 54 rotatably mounted on the outside of the outer pipe 33, with bolts threaded onto the rotating seat 54. The rotating seat 54 can be fixed or loosened relative to the outer pipe by tightening or loosening the bolts. A flap 51 is rotatably mounted on one side of the rotating seat 54 via a rotating shaft, wherein the flap 51 is fixedly connected to the rotating shaft, and the rotating seat 54 is rotatably connected to the rotating shaft. A torsion spring 55 is sleeved on the rotating shaft, which continuously applies a downward torque force to the flap 51.

[0035] Furthermore, two rubber blocks 57 are symmetrically arranged at the bottom of the flap 51, and the two rubber blocks 57 are distributed in a figure-eight shape. The function of these two rubber blocks 57 is to gather the soil that is discharged to both sides when digging a pit or trench towards the middle, so as to ensure that the pit or trench can be backfilled intact.

[0036] Furthermore, multiple slits are provided on the lower side of the flap 51 and the rubber block 57, forming multiple elastic strips 511 with a certain degree of elasticity on the lower side of the flap 51. These elastic strips 511 can adaptively bend according to the undulations of the ground, thus closely adhering to the uneven surface. It should be noted that the force applied by the torsion spring 55 is greater than the force generated by the deformation of the elastic strips 511, to ensure contact stability.

[0037] A stop block 52 and a stop rod 53 are fixed to the rear and front sides of the mounting plate 31 respectively by a first vertical rod and a second vertical rod, wherein the second vertical rod is detachably fixed to the mounting plate 31 by bolts. A locking member 56 is provided on the rotating shaft. When the flip plate 51 is flipped to a specific angle, the rotating shaft is locked by the locking member 56, so that the flip plate 51 will not flip over by gravity or inertia.

[0038] The locking element 56 comprises a retaining ring 561 fixed to the rotating base 54 and a mounting inner hole formed on the rotating shaft. A through hole 562 is formed in the retaining ring 561, and a spring 563 and a limiting head 564 are disposed within the mounting inner hole. The spring 563 exerts a force on the limiting head 564 to displace it outward, causing the outer end of the limiting head 564 to automatically extend into the through hole 562. This effectively restricts the rotation of the rotating shaft, preventing the flap 51 from flipping over on its own.

[0039] Under the two different fertilization operation modes, the operation of the soil covering mechanism 5 is as follows: (1) Pit fertilization mode (spot application), such as Figure 7 As shown: During the rearward flipping of the telescopic sleeve structure, the flap 51 will contact the abutment 52 fixed on the frame. As the flipping continues, the flap 51 flips upward relative to the rotating seat 54 until the limiting head 564 enters the through hole 562 under the force of the spring 563, thereby locking the rotating shaft and the flap 51 in the raised position. At this time, when the telescopic sleeve structure is driven to flip by the flipping motor 32 for lowering and digging for fertilizer, the flap 51 remains in the raised state and will not contact the ground to interfere with the operation.

[0040] After the excavation is completed, the telescopic sleeve structure returns to its original position. The stop rod 53 will abut against the limiting head 564 and push the limiting head 564 inward, disengaging it from the through hole 562. Under the torque force of the torsion spring 55, the flap 51 quickly flips downward, making the lower end of the elastic strip 511 close to the ground. Subsequently, when the telescopic sleeve structure flips backward again to prepare for the next action, the flap 51, under the action of the torsion spring 55, remains in contact with the ground, pushing the excavated soil back into the pit for backfilling.

[0041] (2) Trench fertilization method (strip application), such as Figure 8 As shown: In this mode, the flap 51 is moved to the rear of the telescopic sleeve structure (based on the forward direction of the device). The flap 51 remains in contact with the ground under the torque force of the torsion spring 55. As the device continues to move forward, the flap 51 and the rubber abutment 57 at its bottom continuously push the soil excavated by the trencher into the groove, completing automatic backfilling.

[0042] Example 3 This embodiment is a further optimization based on Embodiment 1. The parts that are the same as those described above will not be repeated here. Figure 2 As shown, to further better realize the present invention, the following configuration is specifically adopted: In order to meet the precise requirements of fertilization location under different planting spacing, this embodiment is equipped with an angle adjustment mechanism 4. The angle adjustment mechanism 4 is used to adjust the tilt angle of the soil digging and material dispensing mechanism 3, so that it can be shifted to the left or right, thereby changing the position of the fertilization point in the lateral direction.

[0043] Mounting plate 31 is rotatably mounted on connecting frame 11 via rotating shaft, allowing the entire excavation and material discharge mechanism 3 to swing slightly left and right around the rotating shaft.

[0044] A radial block 43 extending outward in a radial direction is fixed on the rotating shaft. A flip block 44 is hinged to the end of the radial block 43 away from the axis, and a locking hole 45 is provided at the center of the flip block 44.

[0045] Correspondingly, a circular block 41 is fixedly mounted on the connecting frame 11. On the outer circumference of the circular block 41, three locking blocks 42 are fixedly arranged in a fan shape with the rotation axis as the center. The width of the locking blocks 42 is adapted to the locking holes 45 on the flip block 44 to ensure that a stable rigid lock can be formed after the two are inserted.

[0046] Operators can quickly switch fertilization modes by manually operating the flipping block 44, based on the actual planting row spacing of crops in the field. Vertical center fertilization: When the flipping block 44 flips and engages with the locking block 42 located in the middle position, the locking hole 45 is firmly fitted onto the middle locking block 42. At this time, the radial block 43 is fixed in a vertically upward position, thereby restricting the rotating shaft from driving the mounting plate 31 to remain horizontal, so that the soil excavation and material discharge mechanism 3 below is in a vertical state, and the fertilizer is directly discharged directly below the device's movement.

[0047] Left or right offset fertilization: If it is necessary to adjust the fertilization position to the right or left, the operator first flips the flipping block 44 upward to disengage it from the middle locking block, and then moves the entire excavation and material discharging mechanism 3 (driving the mounting plate 31 and the rotating shaft to rotate together). When the mechanism is tilted to the predetermined angle so that the locking hole 45 is aligned with the left or right locking block 42, the flipping block 44 is flipped down again to insert and lock.

[0048] At this time, the soil excavation and material dispensing mechanism 3 is tilted to the left or right, and its bottom cone head 34 also shifts to the side, thereby achieving precise fertilization of the crop roots without changing the device's travel path.

[0049] This embodiment is not only easy to operate, but also, by utilizing the tight fit between the card hole 45 and the card block 42, it can effectively prevent the device from shifting its angle due to vibration during bumpy field operations.

[0050] The above description is merely a preferred embodiment of the present invention and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present invention, all of which will fall within the protection scope of the present invention.

Claims

1. A hand-held automatic uniform fertilization device, characterized in that, include: A moving mechanism (1) is used to support and drive the entire device to move; A fertilizer box (2) is mounted on the moving mechanism (1) and is used to store fertilizer; A soil excavation and material discharge mechanism (3), mounted on the moving mechanism (1) and located below the fertilizer box (2), is used to form a recess in the ground and discharge the fertilizer from the fertilizer box (2) into the recess; and The soil-covering mechanism (5) is installed on the soil-digging and material-discharging mechanism (3) and is used to fill the depression where fertilizer is discharged.

2. The hand-held automatic uniform fertilization device according to claim 1, characterized in that, The moving mechanism (1) includes a connecting frame (11), the front of which is equipped with a drive wheel (12) driven by a driving motor (13), and the rear of which is provided with a control armrest (14) and a support wheel (15).

3. The hand-held automatic uniform fertilization device according to claim 1, characterized in that, The excavation and material discharge mechanism (3) includes: Mounting plate (31) is mounted on the moving mechanism (1); A flip motor (32) is mounted on the mounting plate (31); The telescopic sleeve structure is connected at its upper end to the output end of the flipping motor (32). The upper end of the telescopic sleeve structure is connected to the fertilizer box (2) through a hose and is driven by the flipping motor (32) to flip at an angle. A conical head (34), fixed to the lower end of the telescopic sleeve structure, is used to insert into the ground to form a recess, on which a discharge hole (341) communicating with the telescopic sleeve structure is provided; and The material control component is located inside the telescopic sleeve structure and is used to control the opening and closing of the fertilizer flow channel.

4. The hand-held automatic uniform fertilization device according to claim 3, characterized in that, The telescopic sleeve structure includes an outer tube (33) and an inner tube (35) that is sleeved inside the outer tube (33) and can slide axially. The material control assembly includes multiple elastic flaps (37) arranged in a ring shape in the inner cavity of the outer tube (33), and a pull rope (38) connecting the elastic flaps (37) and the inner tube (35). The opening and closing of the elastic flap (37) is controlled by driving the inner tube (35) to slide relative to the outer tube (33) and pulling the rope (38).

5. The hand-held automatic uniform fertilization device according to claim 3, characterized in that, The soil covering mechanism (5) includes: The rotating seat (54) is rotatably mounted on the outer tube (33); The flap (51) is rotatably mounted on the rotating seat (54) via a rotating shaft; A torsion spring (55), acting on the pivot, provides torque to the flap (51) to bring its lower end toward the ground; and Locking element (56) is used to lock the flap (51) in the position where it is lifted off the ground.

6. The hand-held automatic uniform fertilization device according to claim 5, characterized in that, The lower end of the flap (51) is provided with a rubber block (57) for gathering soil towards the center, and the lower end of the flap (51) is also provided with a plurality of elastic strips (511) that can adapt to the undulations of the ground.

7. The hand-held automatic uniform fertilization device according to claim 3, characterized in that, It also includes an angle adjustment mechanism (4) for adjusting the lateral tilt angle of the excavation and material discharge mechanism (3); The angle adjustment mechanism (4) includes a radial block (43) mounted on the rotating shaft of the mounting plate (31), a flip block (44) is hinged on the radial block (43), a locking hole (45) is provided on the flip block (44), a circular block (41) is fixed on the lower side of the connecting frame (11), and a plurality of locking blocks (42) are provided on the circumferential surface of the circular block (41) to selectively engage with the locking hole (45).

8. The hand-held automatic uniform fertilization device according to claim 4, characterized in that, It also includes a telescopic pole (36) for driving the inner tube (35) to slide, the telescopic pole (36) being installed outside the outer tube (33) and its telescopic end being connected to the inner tube (35).

9. The hand-held automatic uniform fertilization device according to any one of claims 3 to 8, characterized in that, The excavation and material discharge mechanism (3) is configured to perform at least one of the following operating modes: Pit fertilization mode: The telescopic sleeve structure and the conical head (34) are driven by the flip motor (32) to flip and insert into the pit, and then the material control component is opened to discharge fertilizer into the pit; Trench fertilization mode: The conical head (34) is kept inserted into the ground by the telescopic sleeve structure and a groove is continuously formed during the movement of the device. At the same time, the material control component is kept open to continuously discharge fertilizer into the trench.

10. The hand-held automatic uniform fertilization device according to claim 5, characterized in that, The locking member (56) includes a fixing ring (561) fixed to the rotating seat (54), a mounting inner hole opened on the rotating shaft, a spring (563) and a limiting head (564) disposed in the mounting inner hole, and a through hole (562) opened on the fixing ring (561). The spring (563) drives the limiting head (564) to extend out of the mounting inner hole and engage with the through hole (562) to limit the rotation of the shaft; The rear and front sides of the mounting plate (31) are respectively fixed with a stop block (52) and a stop rod (53) by a first vertical rod and a second vertical rod. The stop block (52) is used to contact and push the flap (51) to rotate upward to the locked position when the telescopic sleeve structure flips backward. The stop rod (53) is used to press against the limiting head (564) of the locking member (56) when the telescopic sleeve structure returns to the center position, so that it is released from the lock and the flap (51) is released.

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