Rice transplanter

Abstract

To create a rice transplanter that can reliably eradicate apple snails. [Solution] A rice transplanter equipped with a land leveling float 31, wherein the land leveling float 31 is provided with a hole 31a, and a means for collecting apple snails 4 32 is attached to the hole 31a, and the means for collecting apple snails 32 is composed of a shaft 32a pivotally supported around the hole 31a of the main body 31b of the land leveling float 31, and a linear member 32b attached to the shaft 32a having a cylindrical, spindle-shaped, or biconical shape with a space inside, wherein at least a part of the linear member 32b protrudes downward from the lower surface of the main body 31b of the land leveling float 31.

Description

Technical Field

[0001] The present invention relates to a rice transplanter capable of exterminating rice water weevils.

Background Art

[0002] Conventionally, a separation device 6 capable of separating removal targets such as rice water weevils existing in a field from muddy water is provided at the lower part of a traveling body 1 so as to move together with the traveling body 1, and a guiding mechanism for guiding the removal targets separated by the separation device 6 to a previously provided specific area is provided. There is known a rice transplanter provided with this (see Patent Document 1).

[0003] As an example of the specific area, it is under the wheels. That is, it was a rice transplanter that collected rice water weevils where the wheels passed and crushed them.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in such a rice transplanter, when the field is soft, there is a problem that it cannot be crushed, and it does not prevent the invasion of snails that lay eggs and breed in a water channel into the field.

[0006] In the present invention, in consideration of the problems of such a rice transplanter, an object is to provide a rice transplanter capable of reliably collecting and exterminating rice water weevils.

Means for Solving the Problems

[0007] A first aspect of the present invention is a rice transplanter equipped with a leveling float, wherein the leveling float is provided with hole portions, This rice transplanter is characterized in that a means for collecting apple snails is attached to the aforementioned hole.

[0008] The first aspect of this invention makes it possible to reliably collect apple snails.

[0009] The second aspect of the present invention is: The first rice transplanter of the present invention comprises a retrieval means consisting of a shaft pivotally supported around the hole in the main body of the land leveling float, and a linear member attached to the shaft that has a cylindrical, spindle-shaped, or biconical shape with a space inside, wherein at least a part of the linear member protrudes downward from the lower surface of the main body of the land leveling float.

[0010] The second aspect of the present invention allows for easy recovery of apple snails from the internal space.

[0011] The third invention is, A second rice transplanter of the present invention is provided, wherein a propeller-shaped blade is attached to the shaft of the collection means, enabling the apple snails collected in the internal space to be crushed.

[0012] With the third aspect of the present invention, the collected apple snails are crushed, thus eliminating the need for disposal.

[0013] The fourth aspect of the present invention is The third rice transplanter of the present invention has multiple ceramic balls, each larger than the spacing between the wires of the linear member, embedded in the internal space.

[0014] The fourth aspect of the present invention allows for more effective crushing of apple snails.

[0015] The fifth aspect of the present invention is: The aforementioned collection means is a cage-shaped object attached to the hole so as to protrude downward, The first rice transplanter of the present invention has an open front.

[0016] The fifth aspect of the present invention allows for easy collection of apple snails from inside the basket.

[0017] The sixth aspect of the present invention is comprising a center soil-preparing rotor and two left and right soil-preparing rotors, a center collection gutter is arranged on the rear side of the center soil-preparing rotor, two left and right collection gutters extending in the front-rear direction and communicating with the center collection gutter are arranged, two scum-ring gai collection boxes communicating with the rear ends of the respective left and right collection gutters are arranged, two rear left and right collection gutters are arranged on the rear sides of the two left and right soil-preparing rotors, the two rear left and right collection gutters communicate with the two scum-ring gai collection boxes respectively, the scum-ring gai collected by the center collection gutter moves to the two left and right collection gutters and then moves to and is collected by the two scum-ring gai collection boxes respectively, and the scum-ring gai collected by the two rear left and right collection gutters moves to the two scum-ring gai collection boxes respectively and is collected, which is the rice transplanter of the first aspect of the present invention.

[0018] According to the sixth aspect of the present invention, the scum-ring gai lifted by the soil-preparing rotor can be reliably collected.

Brief Description of the Drawings

[0019] [Figure 1] Perspective view of the automatic weed control device with a pest control function [Figure 3] Plan view showing the inside of the automatic weed control device [Figure 2] Perspective view showing the inside of the automatic weed control device [Figure 4] Longitudinal sectional view of the automatic weed control device [Figure 5] Partial side view of the automatic weed control device [Figure 6] Perspective view showing another embodiment of the automatic weed control device [Figure 7] Plan view of the embodiment of FIG. 6 [Figure 8] Longitudinal sectional view of the embodiment of FIG. 6 [Figure 9] Perspective view of the housing of the automatic weed control device [Figure 10] Plan view showing the operating status of the automatic weed control device at a sluice gate. [Figure 11] Figure 10: Longitudinal section view [Figure 12] Plan view centered on the leveling rotor of a rice transplanter according to an embodiment of the present invention. [Figure 13] (A) Front view of the collection trough, (B) Longitudinal section view of the collection trough [Figure 14] Perspective view of the collection box [Figure 15] (A) Perspective view of a land leveling float for a rice transplanter according to an embodiment of the present invention, (B) Perspective view of a plate for the land leveling float. [Figure 16] Perspective view of the recovery mechanism [Figure 17] Perspective view of another recovery method [Figure 18] Rear perspective view of the planting section of a rice transplanter. [Figure 19] Perspective view of a scooping device [Figure 20] Perspective view of another recovery method [Figure 21] Field plan [Figure 22] (A) Perspective view of a pest-catching robot, (B) Perspective view of a pest-catching robot, (C) Front view of a pest-catching robot [Figure 23] (A) Perspective view of a pest-catching robot, (B) Front view of a pest-catching robot, (C) Perspective view of a pest-catching robot [Figure 24] Field plan [Figure 25] (A) Perspective view of a pest-catching robot, (B) Front view of a pest-catching robot, (C) Perspective view of a pest-catching robot [Figure 26] (A) Perspective view of a pest-catching robot, (B) Front view of a pest-catching robot, (C) Perspective view of a pest-catching robot [Modes for carrying out the invention]

[0020] The embodiments of the present invention will be described in detail below with reference to the drawings.

[0021] Figure 1 is a perspective view showing the external appearance of the automatic weed control device. 1 is its housing, 2 is the brush mechanism, 3 is the collection unit, and 4 is the apple snail. Figure 2 is a plan view showing the internal structure of housing 1. Figure 3 is a perspective view showing a schematic of its internal structure. Here, 1 is its housing, 2 is the brush mechanism, 3 is the collection unit, and 4 is the apple snail. In the following, the direction of travel of this automatic weed control device will be used as the reference point for front, back, left, and right.

[0022] This automatic weed control device can suppress weeds while floating and traveling on the rice paddy. A brush mechanism 2 is built into the housing 1. This brush mechanism 2 has the function of moving the housing 1 forward and the function of stirring up and stirring up the mud in the rice paddy. Specifically, this brush mechanism 2 has two drive shafts, a front row drive shaft 2a and a rear row drive shaft 2b, which extend to the left and right, and are arranged front and rear. Furthermore, multiple brushes 2c (front row) and brushes 2d (rear row) are attached to each drive shaft 2a and 2b in the left and right directions, and the front row brushes 2c and the rear row brushes 2d are offset from each other by a predetermined amount in the left and right directions. This creates space to avoid seedlings. Also, when viewed from the side, the front row brushes 2c and the rear row brushes 2d overlap, so it is possible to crush apple snails 4 between them. In addition, because they overlap, the entire device is compact.

[0023] Furthermore, a collection unit 3 is provided for collecting apple snails in the mud by the rotation of the brush. This collection unit 3 has a sloping member 3a and a collection basket 3b. The sloping member 3a is provided below the rear row of brushes 2d, and the collection basket 3b is positioned behind the sloping member 3a. In this embodiment, the sloping member 3a is made up of multiple wires arranged in parallel, and the collection basket 3b is made up of multiple wires arranged in parallel behind it. The spacing between the wires is about 10 mm, and apple snails 4 larger than 10 mm are collected while allowing seedlings to escape through the gaps.

[0024] Because of this structure, the casing 1 moves forward as the brushes 2c and 2d rotate, stirring and churning up the mud in the process. This makes the water cloudy, making it difficult for sunlight to penetrate, and the weeds in the mud are stirred up, which helps to suppress weed growth.

[0025] Furthermore, at the same time, the apple snails 4 in the mud are also stirred up with the mud, but since there is a slope member 3a immediately behind it, as it moves forward, it is picked up onto the slope and then collected into the collection basket 3b located immediately behind it.

[0026] In Figure 3, 5 is a lamp that provides a warning when a certain amount or more of apple snails 4 have accumulated in the collection basket 3b. Therefore, a pressure sensor 10 is attached to the collection basket 3b. This warning lamp 5 is positioned on the center line of the housing 1 in a plan view to avoid disrupting the left-right balance. Furthermore, its placement at the top improves visibility.

[0027] A communication unit 7 is provided, which sends signals from the pressure sensor 10 to the warning lamp 5 and notifies the operator. 6 is the controller for this purpose. 9 is a solar panel that generates power. The warning lamp 5 is illuminated, the location is memorized by the GPS mechanism 8, and the system automatically returns to the pre-memorized home position to facilitate disposal of the apple snails 4. The collection basket 3b and the inclined member 3a have pivot points (not shown) to facilitate disposal of the collected apple snails 4. Furthermore, the side of the housing 1 corresponding to the side of the collection basket 3b can be opened to further facilitate disposal. After that, the system returns to the location where the warning lamp 5 was illuminated and continues the work.

[0028] In Figure 1, 11a is a dividing point located in the center of the drive shaft 2b, and the two resulting shafts can be driven independently by the left and right motors 11b and 11c. This makes it easy to change direction and trace paths.

[0029] Furthermore, a comb-shaped debris removal member 12 is provided as shown in Figures 2 and 4. This debris removal member 12 is composed of multiple comb-shaped wires that are arranged in a downward-sloping manner from the front to the rear of the housing 1. Examples of debris include straw, and this is to prevent it from entering the collection basket 3b.

[0030] This debris removal member 12 is elastic and prevents damage to seedlings. Alternatively, the rear end of the debris removal member 12 may be connected to the front end of the slope member 3a as shown in Figure 5. This makes it easier to push down debris and prevents it from entering the collection basket 3b.

[0031] Alternatively, it may be positioned near the front drive shaft 2a without being connected, and work in cooperation with the front brush 2c to prevent debris from getting trapped.

[0032] Furthermore, the debris removal member 12 may be made rotatable at the pivot point 12a so that it can be stored upward when not needed.

[0033] Next, another embodiment will be described with reference to Figures 6, 7, and 8. In the figures, a recovery mechanism 13 for recovering apple snails 4 is attached to the housing 1. This recovery mechanism 13 consists of two rows of recovery units 13a and 13b arranged in parallel, front to back.

[0034] The recovery units 13a and 13b are each composed of pivot shafts 13c and 13d and linear members 13e and 13f, respectively. Multiple linear members 13e and 13f are connected in parallel to the pivot shafts 13c and 13d, forming a cylindrical, spindle-shaped, or biconical shape as a whole, with an internal space and elasticity.

[0035] This collection mechanism 13 moves the housing 1 and also stirs up the mud to prevent weed growth. Furthermore, the front and rear row pivot axes 13c and 13d are driven independently by motors. In addition, the front row linear member 13e and the rear row linear member 13f are offset from each other with respect to the left-right direction. This allows for straight movement and turning by rotating, reversing, and stopping each motor. Also, by moving the flanges 13g and 13h provided at the ends of the linear members 13e and 13f as shown by the arrows, the distance between the linear members 13e and 13f can be changed, which allows for adjustment of the size of the apple snails 4 to be collected and facilitates the discharge of the collected apple snails 4.

[0036] Element 14 is an electrode plate, and by running it before rice planting, it becomes possible to measure the fertility of the field while collecting apple snails 4.

[0037] Next, another embodiment will be described with reference to Figures 9, 10, and 11. Here, 16 is a sluice gate, and 17 is the levee on which the sluice gate 16 is located.

[0038] The sluice gate 16 may be opened and closed for purposes such as adjusting the water level in the rice paddy. When the sluice gate 16 is opened and closed, apple snails 4 may enter the rice paddy from the outside. Alternatively, apple snails 4 that are already in the rice paddy may be washed out into the external waterway.

[0039] Therefore, in this embodiment, when water is introduced into the paddy field, as shown in Figures 10 and 11, the front side 18 of the housing 1 is brought into contact with the sluice gate 16, and the brushes 2c, 2d or linear members 13e, 13f are rotated at a position higher than the mud surface of the paddy field to prevent them from advancing. Even if apple snails 4 try to enter the paddy field from the outside, the brushes 2c, 2d etc. rotate and can collect them, thus preventing the intrusion of apple snails 4 from the outside. For this purpose, for example, as shown in Figure 9, the side surface 1a of the housing 1 is designed to extend downward. Alternatively, a separate bottom-raising member may be prepared and attached.

[0040] On the other hand, when using the sluice gate 16 to discharge water from the paddy field to the outside, the rear side 19 of the housing 1 is brought into contact with the sluice gate 16 (not shown), and brushes 2c, 2d or linear members 13e, 13f are rotated at a position higher than the mud surface of the paddy field to prevent them from moving forward, thereby collecting apple snails 4 that are flowing through the water and preventing them from flowing out of the paddy field to the outside.

[0041] Furthermore, by memorizing the position of the sluice gate and moving it in accordance with the opening and closing control of the sluice gate 16, it is possible to automatically prevent the entry and outflow of apple snails 4.

[0042] Next, with reference to Figure 12, a rice transplanter according to an embodiment of the present invention will be described. Specifically, Figure 12 is a plan view centered on the leveling rotors (center leveling rotor 20, left and right leveling rotors 21 and 22) of the rice transplanter.

[0043] Behind the center leveling rotor 20, a rain gutter-shaped, V-shaped center collection trough 23 is positioned almost parallel to the center leveling rotor 20. The height of the front wall of this center collection trough 23 is slightly shorter than the rear wall 27, making it easier for the apple snails 4 that are scooped up by the center leveling rotor 20 to enter this center collection trough 23. In this way, the apple snails 4 that are scooped up into the center collection trough 23 are pushed and carried away, mostly to the left and right, as the vehicle moves.

[0044] To the left and right of the central collection trough 23, left and right collection troughs 24 and 25 are positioned, respectively, extending from front to rear and sloping downwards towards the rear. These troughs have the same shape as the central collection trough 23 and are connected to each other midway. Furthermore, the front ends of both the left and right collection troughs 24 and 25 extend in front of the central leveling rotor 20, and in plan view, they form a figure-eight shape, with the front being narrower than the rear. This prevents the apple snails 4 that are hoisted up by the central leveling rotor 20 from escaping.

[0045] In this way, the migrated apple snails 4 are moved into the two interconnected, front-to-back extending left and right collection troughs 24 and 25, and then move further to the rear.

[0046] As shown in Figure 13, the left and right collection gutters 24 and 25 have multiple windows 26, 26, in the outer wall 27 to allow muddy water to escape and prevent apple snails 4 from overflowing. Such windows 26 are also formed in the other gutters.

[0047] Furthermore, rear left and right collection troughs 28 and 29, which have a similar trough structure, are provided parallel to each other immediately behind the two left and right leveling rotors 21 and 22. These rear left and right collection troughs 28 and 29 are slightly tilted towards the center and rearward, so that the apple snails 4 flow towards the center. In addition, the left and right outer ends of the rear left and right collection troughs 28 and 29 are bent sharply forward and are also tilted towards the center by an angle α in a plan view, as shown in the figure. This prevents the apple snails 4 that are swept up by the left and right leveling rotors 21 and 22 from escaping outwards.

[0048] The rear ends of the left and right collection troughs 24 and 25, and the central ends of the rear left and right collection troughs 28 and 29 are located in approximately the same position and both are connected to the apple snail collection box 30, so the apple snails 4 that have been carried downstream are collected into this apple snail collection box 30. The location of this apple snail collection box 30 is where the conventional rake was located.

[0049] Figure 14 is a perspective view of the apple snail collection box 30. Here, 30a is a knob bolt, 30b is a mesh-like body, and 30c is the entrance into which the apple snails 4 flow. When the box is full of apple snails 4, the knob bolt 30a is removed and the body 30b is rotated to discard the apple snails 4 inside.

[0050] Next, a rice transplanter according to an embodiment of the present invention will be described with reference to Figures 15, 16, and 17. Figure 15 is a perspective view of the floats (center, left and right) 31 of the rice transplanter. As shown in Figure 15(A), a through hole 31a is drilled near the front of the float 31. Figure 15(B) is a plate 31c for covering the hole 31a when it is not in use.

[0051] A means 32 for collecting apple snails 4 is provided in the hole 31a. That is, a collection means 32 as shown in Figure 16 is attached. This collection means 32 consists of a shaft 32a pivotally supported on the main body 31b of the float 31, and a linear member 32b attached to the shaft 32a, which has a space inside. The linear member 32b is cylindrical, spindle-shaped, or biconical. At least a part of it protrudes downward from the lower surface of the main body 31b of the float 31. Because it is attached to the float 31, apple snails 4 can be removed and collected in the planting section before planting seedlings.

[0052] Furthermore, a propeller-shaped blade 32c is attached to the shaft 32a of the recovery means 32, enabling it to crush the apple snails 4 that are recovered inside. In addition, multiple ceramic balls 32g, larger than the spacing between the wires of the linear member 32b, are embedded in the internal space. This allows the ceramic balls 32g to work in cooperation with the blade 32c to efficiently crush the apple snails 4.

[0053] Furthermore, by changing the width of the linear members 32b on both sides, the distance between the lines can be changed, accommodating varying sizes of apple snails 4. Disposal also becomes easier.

[0054] Figure 17 shows another modification, in which a cage-shaped member 32d, serving as a collection means, is attached to the hole 31a of the float 31, protruding downwards. The front of the cage is open, into which the apple snails 4 are collected. For this purpose, a claw portion 32d1 is provided at the lower end to dig up soil. Also, 32f is an opening for draining water.

[0055] Next, another embodiment will be described with reference to Figures 18, 19, and 20. Figure 18 is a perspective view of the planting section of a rice transplanter seen from the front, and 33 is a scooping device as shown in Figure 19. This scooping device 33 is made of wire and is shaped to collect apple snails 4 from the front. This scooping device 33 can be installed, for example, in place of a conventional rake. It is installed in front of the planting section so that it can be placed in the field before planting and used to scoop out the snails. Apple snails 4 that are deep in the field can be collected while the machine is moving.

[0056] Figure 20 shows another example 32' of the linear collection means 32 described above, which is similarly attached in place of a rake and allows for the spraying of chemicals from the center of the rotating shaft, enabling the eradication of captured apple snails 4 with chemicals. A propeller-like blade is provided at the center of the rotating shaft to crush the captured apple snails 4. By crushing them in this way, apple snails 4 do not accumulate inside, and maintenance is made easier.

[0057] As a modification, a guide mechanism may be provided at the bottom of the vehicle body to separate the target material, such as apple snails 4, present in the field from the muddy water by the means described above or known means, and to guide the separated target material to a pre-defined specific area. This specific area could be a basket provided on the leveling float. Alternatively, the specific area could be a position offset from the trajectory of the wheels, and could be a basket in place of a rake provided in the planting section.

[0058] Next, another embodiment will be described. Figure 21 shows an automatic weed control device that performs pest control in a field 34 by rotating a pest-catching cage made of, for example, a transparent wire as described above, with a motor, and using that as the driving force to travel. The device is equipped with GNSS and IMU and has a configuration that can store the travel route 35. It also has a configuration that stores the traveled route 35 and changes the angle at which it reverses so as not to travel the same route 35 again.

[0059] By being able to remember where it has traveled, it can travel throughout field 34 without repeatedly going over the same areas.

[0060] When attempting to move, the vehicle recognizes a ridge as the location where the GNSS-based position change ceases (vehicle speed becomes 0), and changes direction within a range of 90° to less than 270° to continue moving. By changing direction, the vehicle prevents becoming stuck on a ridge, allowing it to travel throughout the entire field 34, and by capturing numerous points where ridges are recognized, the vehicle can recognize the shape of the field.

[0061] As described above, the shape of the field 34 is used to create a travel path for the rice transplanter and other automated implements. Creating the travel path in the pre-operation process allows for prior confirmation of the path. This eliminates the need to teach the rice transplanter and other implements, improving work efficiency.

[0062] The system will enable the creation of map data in ISOXML format, etc., from the acquired field shapes of 34 fields. This will improve efficiency by allowing the creation of actual measured map data while pest control is being carried out, eliminating the need for position correction.

[0063] As shown in Figures 22(A), (B), and (C), the machine is equipped with an electrode sensor 36 for measuring soil fertility, and the fertility can be recorded in the map data. This allows the fertility status of the field 34 to be known and used for fertilization planning and farming information. A variable fertilization map is created according to the fertility with this configuration, and fertilization is performed using a map data-linked variable fertilization rice transplanter. Since soil fertility can be measured in advance by other methods, ultrasonic sensors and the like are not required in the rice transplanter, which reduces costs.

[0064] As shown in Figures 23(A), (B), and (C), the machine is equipped with an ultrasonic sensor 37 for measuring field depth, and the configuration allows the field depth to be recorded in the map data. The depth of the field 34 can be known and used for fertilization planning and farming information. A variable fertilization map is created according to the depth, and fertilization is performed using a map data-linked variable fertilization rice transplanter. Since the depth can be measured in advance by other methods, ultrasonic sensors for measuring depth on the rice transplanter become unnecessary, resulting in cost reduction.

[0065] As shown in Figure 24, the vehicle travels through the field along the created path, avoiding transplanted seedlings and seeds. This method is expected to control pests and weeds without damaging transplanted seedlings or germinated seeds, eliminating the need for herbicides (organic farming).

[0066] As shown in Figures 25(A), (B), and (C), the system is configured to measure the water level in field 34 using sensors (such as ultrasonic sensors). Conventionally, there are systems that measure the water level at one location and automatically open and close the sluice gates to automate water management. However, this has the problem that the entire field cannot be monitored from a single measurement point (water management becomes inadequate when water is shifted by wind), but this can be solved by the above method. In other words, by measuring the water level throughout field 34 and managing the water accordingly, crop growth becomes more stable and quality and yield improve.

[0067] As shown in Figures 26(A), (B), and (C), the system is equipped with a camera 38 that captures images of the growing field 34 along with location information, and uses AI to automatically monitor the growth status and check for the occurrence of pests and diseases. By monitoring the growth status and pests and diseases from actual images of the growing plants, appropriate fertilization and control can be performed, improving quality and yield.

[0068] In such cases, the system will be configured to record video and be used as a security camera. It will also utilize AI to identify pests, vermin, and harmful birds. In this configuration, it will be equipped with speaker 39 to provide audio warnings when crop thieves, harmful birds, or vermin are present. Furthermore, only videos of vermin will be automatically saved, while other videos will be automatically deleted. This saves memory while saving only necessary videos, making it useful for pest and security purposes. [Industrial applicability]

[0069] This invention is ideal for rice transplanters because it can reliably eliminate apple snails. [Explanation of symbols]

[0070] 1 cabinet 1a side 2 Brush mechanism 2a Drive wheels (front row) 2b Drive wheels (rear row) 2c Brush (front row) 2D brush (back row) 3. Recovery section 3a Inclined member 3b Collection basket 4. Apple snails 5. Warning lights 6 controllers 7. Communication Unit 8 GPS mechanism 9 Solar Panels 10. Pressure-sensitive sensor 11a Division point 11b Right motor 11c left motor 12. Contamination removal member 12 pivot points 13 Recovery mechanism 13a Front row retrieval unit 13b Rear row retrieval unit 13c Rotary shaft 13d Rotary axis 13e Linear member 13f Linear member 13g flange 13h flange 14 Electrode plate 15 Motor 16 Floodgate 17 ridge 18 Front 19 Rear side 20 Center Ground Leveling Rotor 21, 22 Left and right leveling rotors 23 Center Collection Tunnel 24, 25 Left and right collection gutters 26 windows 27 Outer wall 28, 29 Rear left and right collection boxes 30 Apple Snail Collection Box 30a Knob bolt 30b Main Unit 30c entrance 31 Floats 31a Hole 31b Main unit 31c board 32, 32' Recovery method 32a axis 32b Linear member 32c blade 32d Cage-shaped member 32e Claw part 32f aperture 33 Scoop 34 fields 35. Route 36 electrodes 37 Ultrasonic Sensor 38 Cameras 39 speakers

Claims

1. A rice transplanter equipped with a land leveling float, The aforementioned land leveling float is provided with a hole. A rice transplanter characterized in that a means for collecting apple snails is attached to the aforementioned hole.

2. The rice transplanter according to claim 1, wherein the recovery means comprises a shaft pivotally supported around the hole in the main body of the land leveling float, and a linear member attached to the shaft having a cylindrical, spindle-shaped, or biconical shape with a space inside, and at least a part of the linear member protrudes downward from the lower surface of the main body of the land leveling float.

3. The rice transplanter according to claim 2, wherein a propeller-shaped blade is attached to the shaft of the collection means, enabling the apple snails collected in the internal space to be crushed.

4. The rice transplanter according to claim 3, wherein the internal space contains a plurality of ceramic balls that are larger than the spacing between the wires of the linear member.

5. The aforementioned collection means is a cage-shaped object attached to the hole so as to protrude downward, The rice transplanter according to claim 1, the front side is open.

6. It is equipped with a central tilling rotor and two left and right tilling rotors. A center recovery trough is positioned behind the center leveling rotor. Two left and right collection troughs are arranged, communicating with the aforementioned center collection trough and extending in the front-to-back direction. Two apple snail collection boxes are positioned, each communicating with the rear end of the left and right collection troughs. Rear left and right recovery troughs are positioned behind the two left and right leveling rotors. The two rear left and right collection troughs are connected to the two apple snail collection boxes, respectively. The rice transplanter according to claim 1, wherein apple snails collected in the center collection trough are moved to the two left and right collection troughs, and then moved to the two apple snail collection boxes for collection, and apple snails collected in the two rear left and right collection troughs are moved to the two apple snail collection boxes for collection.

Images