JP2019216641A - Seedling transplant device - Google Patents

Abstract

To provide a seedling transplant device capable of properly transplanting seedlings.SOLUTION: A seedling transplant device comprises: a main body frame which moves on a field by a crawler; transplant claws 18 provided on the main body frame for transplanting seedlings to the field; and a rising body 20 which is provided on a front side (+X side) of a travel direction of the transplant claws of the main body frame. The rising body 20 comprises a pair of thin plate shaped parts 34a, 34b facing each other, and an interval between lower ends of the pair of thin plate shaped parts is narrower than an interval between upper ends, and in a state in which lower ends of the pair of thin plate shaped parts enter the ground of the field, the main body frame moves in the travel direction, soil on a part where the seedlings are transplanted passes a space between the pair of thin plate shaped parts 34a, 34b.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a seedling transplantation device.

  For example, when cultivating soft vegetables such as spinach, direct sowing cultivation, in which seeds are sown directly in the field and cultivated, is generally performed. Producers are also increasing.

  In the case of transplant cultivation, a semi-automatic transplanter that supplies seedlings by hand or a fully-automatic transplanter with high work efficiency can be used. However, when seedlings are transplanted with a semi-automatic transplanter or a fully automatic transplanter, the seedlings often become shallow depending on the hardness of the field. For example, although there may be cases in which soil crushing is not performed before transplantation, in such a case, the hardness of the field is high, so that the plant is often shallow. Comparing shallowly planted plants to those of standard planting depth, shallowly planted plants grow poorly and require days to harvest. For this reason, it is preferable that the transplanting machine is provided with a function of implanting at a standard implantation depth.

  BACKGROUND ART Conventionally, a vegetable transplanter that transplants a deep-rooted onion or the like while cutting a groove with a groove making machine provided in front of a planting claw is known (for example, see Patent Document 1). Further, there is known a transplanter in which a planting hole is formed intermittently in a field scene by an ascending and descending groove provided in front of a seedling planting device, and a seedling is planted in the planting hole (for example, Patent Document 1). 2). There is also known a transplanter that cuts a groove with a groove tool that is inclined forward and downward and curved forward and downward, and that seedlings are planted in the groove (for example, see Patent Document 3). Further, there is known a transplanter for planting a tobacco seedling or the like in a hole dug by a digging mechanism for forming an enlarged hole which is shallower and larger than a seedling planting hole (for example, see Patent Document 4).

JP 2005-65656 A JP-A-11-187712 JP 2008-104363 A JP 2014-64528 A

  In the above-mentioned Patent Documents 1 to 4, when forming a groove or a hole in a field, the soil is retreated from a position where the seedlings are planted. (Position) may be difficult to maintain.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a seedling transplantation device that can plant a seedling in an appropriate state.

  In one aspect, the seedling transplantation device is a seedling transplantation device that transplants seedlings to the field while moving the field along the traveling direction, and is provided in the main body that moves in the field, and provided in the main body. A transplanting mechanism for transplanting seedlings to the field, and a cut-and-raised body provided on the front side in the traveling direction of the main body with respect to the transplanting mechanism, wherein the cut-and-raised body is a pair of thin plates facing each other. The distance between the lower ends of the pair of thin plate-shaped portions is smaller than or equal to the distance between the upper ends of the pair of thin plate-shaped portions. Moves in the traveling direction, so that the soil at the location where the seedlings are transplanted passes between the pair of thin plate-shaped portions.

  ADVANTAGE OF THE INVENTION The seedling transplantation apparatus of this invention has the effect that a seedling can be planted in an appropriate state.

It is a side view showing typically the seedling transplantation device concerning one embodiment. It is a perspective view which shows the planting nail vicinity. It is a figure for explaining composition of a cutting and raising object. It is a perspective view which shows the cutting and raising body and a planting nail in a working state. FIGS. 5A and 5B are diagrams (part 1) for explaining the operation of the seedling transplantation device. 6A and 6B are diagrams (part 2) for explaining the operation of the seedling transplantation device. FIGS. 7A and 7B are diagrams (part 3) for explaining the operation of the seedling transplantation device. FIGS. 8A and 8B are diagrams (part 4) for explaining the operation of the seedling transplantation device. FIGS. 9A to 9D are views (part 1) illustrating a modification of the cut and raised body. FIGS. 10A to 10C are diagrams (part 2) illustrating a modified example of the cut-and-raised body.

  Hereinafter, a seedling transplantation device according to an embodiment will be described in detail with reference to FIGS. 1 to 8B. FIG. 1 is a side view schematically showing a seedling transplantation apparatus 100 according to one embodiment. The seedling transplanting apparatus 100 is a fully automatic seedling transplanting apparatus that transplants soft vegetable seedlings such as spinach and mizuna into a field while moving in the traveling direction (+ X direction in FIG. 1). In FIG. 1, the front-rear direction of the seedling transplanting apparatus 100 is defined as an X-axis direction, the left-right direction is defined as a Y-axis direction, and the up-down direction is defined as a Z-axis direction.

  As shown in FIG. 1, the seedling transplanting device 100 includes a main body frame 10, a crawler 12, a seedling extracting unit 14, a seedling guiding cylinder 16, a planting claw 18 as a transplanting mechanism, a cutting and raising body 20, And an earth covering wheel 22.

  In the seedling transplanting apparatus 100 shown in FIG. 1, a plurality of sets of the seedling extracting unit 14, the seedling guiding tube 16, the planting claws 18, the cutting and raising body 20, and the earth covering ring 22 are provided at predetermined intervals in the Y-axis direction. (For example, four sets).

  The main body frame 10 is formed of, for example, an aluminum frame, and holds each part of the seedling transplantation device 100. A seedling tray 24 on which a large number of seedlings can be set in a matrix along the X-axis direction and the Y-axis direction can be placed on the main body frame 10. Note that the seedling tray 24 can be reciprocated along the Y-axis direction by a Y moving mechanism (not shown). The main body frame 10 is provided with a handle 26. The operator corrects the traveling direction of the seedling transplantation device 100 using the handle 26.

  The crawler 12 is an endless track driving mechanism. Two crawlers 12 are provided at predetermined intervals in the Y-axis direction. The seedling transplanting device 100 is moved by the crawler 12 in the traveling direction (+ X direction in FIG. 1).

  There are a plurality (for example, four) of seedling extracting portions 14 at predetermined intervals in the Y-axis direction. Each seedling extracting portion 14 extracts one seedling from the seedling tray 24 one by one, and places the seedling in the corresponding seedling guiding cylinder 16. throw into. Here, the plurality of seedling extracting portions 14 can reciprocate in the X-axis direction by a common X drive actuator 28X, and can reciprocate in the Z-axis direction by a common Z drive actuator 28Z. The plurality of seedling extracting portions 14 are sequentially aligned with the seedlings arranged in the X-axis direction of the seedling tray 24 by the X drive actuator 28X, and are driven downward by the Z drive actuator 28Z. Then, when the finger at the tip of each seedling extracting unit 14 performs a closing operation, each of the plurality of seedling extracting units 14 grasps the seedling at the same timing. Further, each seedling extraction unit 14 holding the seedling is driven upward by the Z drive actuator 28Z to extract the seedling from the seedling tray 24, and is thereafter driven in the -X direction by the X drive actuator 28X. It is positioned above the seedling guiding cylinder 16. Then, each seedling extracting section 14 throws the seedling into the seedling guiding cylinder 16 by performing an opening operation of the finger portion at the tip or the like. Although the seedling extracting unit 14 cannot move in the Y-axis direction, since the seedling tray 24 can move in the Y-axis direction as described above, all the seedlings set in the seedling tray 24 are extracted. It can be removed by any of the parts 14. However, the invention is not limited to this, and the seedling extracting unit 14 may be capable of reciprocating in the Y-axis direction. In this case, the Y moving mechanism of the seedling tray 24 may be omitted.

  The seedling guiding cylinders 16 are a plurality of (for example, four) cylindrical members arranged on the main body frame 10 at predetermined intervals in the Y-axis direction. Each of the seedling guiding cylinders 16 is disposed above each of a plurality (for example, four) of planting claws 18. The seedling guiding cylinder 16 guides the seedlings introduced from above by the seedling extracting unit 14 downward, and throws the seedlings into the planting claws 18 from above.

  There are a plurality (for example, four) of planting claws 18 at predetermined intervals in the Y-axis direction, and has a function of planting seedlings in a field. FIG. 2 is a perspective view showing the vicinity of the planting claws 18. As shown in FIG. 2, the planting claw 18 has a pair of beak members 30A and 30B having a pointed shape that can pierce the field. Since the beak members 30A and 30B have a substantially semicircular XY cross section, they have a substantially conical shape when fitted together as shown in FIG. 2, and an inner space having an open upper end between the pair of beak members 30A and 30B. Is formed.

  The planting claw 18 can be moved in the vertical direction by a vertical actuator (not shown). The lower ends of the pair of beak members 30A and 30B can be opened or closed in a direction indicated by an arrow A in FIG. 4 by an opening / closing actuator (not shown). For this reason, according to the planting claw 18, the pair of beak members 30A, 30B are pierced into the field with the seedlings inserted into the internal space of the planting claw 18, and the lower ends of the beak members 30A, 30B are changed from that state. , The seedlings can be planted in the field.

  Returning to FIG. 1, there are a plurality (for example, four) of the cut-and-raised bodies 20 corresponding to each of the planting claws 18, and they are provided on the front side (+ X side) in the traveling direction of the planting claws 18. FIG. 3 is a diagram illustrating a state where the cut and raised bodies 20 (two) in FIG. 1 are viewed from the −X side. The cut-and-raised body 20 is formed by processing a thin plate-like material (for example, an iron plate, an aluminum plate, SUS, or the like) into a substantially V shape, and as shown in FIG. Fixed by welding or the like.

  The cut-and-raised body 20 has a pair of thin plate portions 34a and 34b facing each other in the X-axis direction. The interval between the lower ends (-Z ends) of the pair of thin plate portions 34a and 34b is smaller than the upper end (+ Z ends). The lower ends of the pair of thin plate portions 34a and 34b are connected by a connecting portion 34c.

  The cut-and-raised body 20 has a first state (referred to as a work state) in which the longitudinal direction is coincident with the Z-axis direction, as shown in FIGS. 3 and 4, and an X-axis, as shown in FIG. A transition can be made between a second state (called a standby state) that matches the direction. The operator operates the manual operation bar 36 (see FIG. 1) provided at the −Y end of the rotating shaft member 32 in a counterclockwise direction or a clockwise direction, so that the rotating shaft member 32 becomes the rotating shaft. By rotating the cut-and-raised body 20, the cut-and-raised body 20 can be transitioned between the working state and the standby state. When the operator hooks the manual operation bar 36 on the stopper 38 provided on the main body frame 10, the cut-and-raised body 20 is in a working state, and the cut-and-raised body 20 cannot be rotated in the counterclockwise and clockwise directions. In this manner, by hooking the manual operation bar 36 on the stopper 38, the cut-and-raised body 20 comes into contact with the soil of the field as shown in FIG. 4, and a force (load) in the -X direction is applied to the cut-and-raised body 20. However, the cut and raised body 20 can be maintained in the working state.

  When the seedling transplantation device 100 moves in the traveling direction (+ X direction) in a state where the lower ends of the pair of thin plate portions 34a and 34b of the cut and raised body 20 enter the ground as shown in FIG. The soil of the field passes between the portions 34a and 34b. Thus, the soil at the location where the seedlings are transplanted is crushed by the thin plate portions 34a and 34b, and thereafter returns to the original position in the field. For this reason, when the planting nail 18 is to plant a seedling, the lower end of the planting nail 18 is easily pierced from the ground surface to a desired depth (for example, about 40 mm to 50 mm). Note that while the seedling transplantation device 100 moves in the traveling direction, the cut-and-raised body 20 does not have to keep entering the ground. For example, only the soil at the location where the seedlings are transplanted may be crushed by vertically moving the cut-and-raised body 20 (repeated movement of falling and rising). In this case, the operation timing of the cut-and-raised body 20 and the planting claw 18 is controlled so that the planting claw 18 descends toward the crushed portion after the cutting and raising body 20 descends and breaks the soil. Just fine. It should be noted that a motor is provided on the manual operation bar 36, and the rotation of the motor in a predetermined direction and the rotation in the opposite direction are repeated so as to realize the vertical movement (repetition of lowering and raising) of the cutting and raising body 20. You may.

  On the other hand, when the cut-and-raised body 20 is in a standby state as shown in FIG. 2, the cut-and-raised body 20 is located above the ground surface, and is located between the pair of thin plate portions 34a and 34b of the cut-and-raised body 20. The planting claws 18 enter. As described above, when the cut-and-raised body 20 is in the standby state, the planting claws 18 are set inside the cut-and-raised body 20, so that the storage space for the cut-and-raised body 20 can be reduced.

  Returning to FIG. 1, two earth covering rings 22 are provided in the traveling direction rear (−X side) of each planting claw 18, two for each planting claw 18. The earth covering wheel 22 can transition between a state in which it is in contact with the ground surface of the field (working state) and a state in which it is separated from the ground surface (standby state). The soil cover ring 22 in the working state passes (closes) surrounding soil to the root portion of the seedling by passing the vicinity of the root portion of the seedling planted by the planting claws 18. On the other hand, when the earth covering wheel 22 is in a standby state, it does not hinder the movement of the seedling transplanting device 100.

(About operation of seedling transplantation device 100)
Next, the operation of the seedling transplantation device 100 will be described in detail with reference to FIGS. 5 (a) to 8 (b). FIG. 5A shows a state before the seedling transplantation apparatus 100 starts the operation of transplanting seedlings. In the state of FIG. 5A, the manual operation bar 36 is in a state of falling forward (+ X side) in the traveling direction, and the cutting and raising body 20 is in a standby state (the state of FIG. 2). The earth covering wheel 22 is also in a state (standby state) separated from the ground surface of the field. 5A, the operator places a seedling tray 24 on which a number of seedlings are set on the main body frame 10.

  When starting the transplanting operation of the seedlings by the seedling transplanting apparatus 100 from the state of FIG. 5A, the operator tilts the manual operation bar 36 counterclockwise as shown in FIG. The operation bar 36 is hooked on the stopper 38. Further, the worker lowers the earth covering wheel 22 and brings the earth covering wheel 22 into contact with the ground surface of the field. This completes the preparation for starting the transplant operation.

  When the worker inputs the start of the seedling transplanting operation from the state of FIG. 5B via an input device (not shown), the crawler 12 starts moving in the traveling direction. Along with the start of the movement, a transplanting operation of the seedlings is started. The operation of transplanting the seedlings is executed by a control device (not shown). At the stage of FIG. 5B, the lower end of the planting claw 18 does not contact the ground surface of the field.

  When the transplanting operation of the seedlings is started, the control device controls the X drive actuator 28X to move each seedling extracting section 14 in the + X direction as shown in FIG. 6A (see arrow B). Further, the control device starts the Z drive actuator 28Z from the stage where the position in the X-axis direction of each seedling extraction unit 14 is located at a predetermined position (for example, above the seedling set on the most -X side of the seedling tray 24). Under control, each seedling extracting unit 14 is moved in the −Z direction (see arrow C). Then, the control device causes each seedling extracting unit 14 to grip the seedling by changing the finger of each seedling extracting unit 14 from the open state to the closed state when each seedling extracting unit 14 is located at the predetermined height. . The predetermined height is a position at which the tip (lower end) of the finger portion of each seedling extraction unit 14 on the -Z side penetrates the soil (soil covering the root of the seedling) in the seedling tray 24.

  Next, the control device raises each seedling extraction unit 14 as shown in FIG. 6B (arrow D). Thereby, each seedling extracting unit 14 extracts a seedling from the seedling tray 24. Each seedling extraction unit 14 extracts seedlings from the seedling tray 24 together with the soil covering the roots of the seedlings. Next, the control device moves each seedling extraction unit 14 in the −X direction (arrow E). Then, when each seedling extracting unit 14 reaches above the seedling guiding cylinder 16, the control unit changes the finger portion of each seedling extracting unit 14 from the closed state to the open state. Further, the control device raises each seedling extracting unit 14 (arrow F). As a result, the seedlings held by each seedling extracting unit 14 are thrown into the seedling guiding tube 16, and the seedlings thrown into the seedling guiding tube 16 pass through the seedling guiding tube 16 and are inserted into the inner space of the planting claws 18. Will be thrown into. Note that each seedling extracting unit 14 may be provided with an extruding mechanism for pushing out the seedlings downward when the finger of each seedling extracting unit 14 is opened. By providing such an extruding mechanism, the seedlings can be easily dropped from each seedling extracting unit 14. Since the seedling transplanting device 100 is moving in the traveling direction (+ X direction) even while the above-described operation by the seedling extracting unit 14 is being performed, the cut and raised body 20 removes soil in front of the planting claws 18. Continue to crush. However, the present invention is not limited to this. As described above, while the seedling transplanting apparatus 100 moves in the traveling direction, the cutting and raising body 20 moves up and down, so that only the soil at the location where the seedling is transplanted is cut and raised. 20 may be crushed.

  Next, the control device controls a vertical actuator (not shown) to drive down the planting claws 18 as shown in FIG. 7A (see arrow G). Thereby, the lower end of the planting claw 18 pierces the field. In this case, since the soil at the place where the planting nail 18 pierces is crushed by the cut-and-raised body 20, the planting nail 18 can easily pierce from the ground surface to a desired depth. From this state, the control device opens the lower ends of the pair of beak members 30A and 30B of the planting claws 18 to plant the seedlings in the field. Thereby, the planting depth of the seedlings can be stabilized. Also, since the place where the seedlings are planted is not a groove, there is abundant soil supporting the seedlings around the planted seedlings. Thereby, it is possible to prevent the planted seedling from falling down. In addition, the control device moves the seedling tray 24 by one seedling in the Y-axis direction (for example, the + Y direction) via a Y moving mechanism (not shown) while the seedling is being planted by the planting claws 18. And by controlling the seedling extracting unit 14 in the same manner as in FIG. 6A (see the arrows B and C in FIGS. 7A and 7B), the seedling next to the previously extracted seedling is controlled. (−Y side seedling).

  Next, as shown in FIG. 7B, the control device controls a vertical actuator (not shown) to raise the planting claw 18 (arrow H). In addition, the control device drives the seedling extracting unit 14 in the same manner as in FIG. 6B (arrows D, E, and F in FIG. 7B), thereby causing the seedlings to be thrown into the planting claws 18.

  After that, the control device repeatedly executes the operation of FIGS. 7A and 7B and the operation of moving the seedling tray 24 in the + Y direction. By repeating this, when all the seedlings of one row arranged in the Y-axis direction of the seedling tray 24 have been extracted, the control device sets the seedlings of the next row (the row on the + X side) as the extraction target. When the seedling in the next row is to be extracted, the control device performs the same operations as those in FIGS. 7A and 7B (the operations illustrated in FIGS. 8A and 8B), and The movement of the seedling tray 24 in the -Y direction is repeatedly executed. 8A and 8B, the amount of movement of each seedling extractor 14 in the X-axis direction is larger than in FIGS. 7A and 7B. Thereafter, the control device repeatedly executes the same processing as described above, each time when all the seedlings of the row to be extracted have been extracted, while the seedlings of the row on the + X side of that row are to be extracted.

  In addition, while the seedling transplanting apparatus 100 is performing the planting operation while moving, the earth covering ring 22 passes near the + Y side and the −Y side of the root of the seedling planted in the field. Thus, the surrounding soil can be brought close to the root portion of the seedling (covered soil).

  According to the above-described operation, in this embodiment, four rows of seedlings can be simultaneously planted at a desired planting depth by a plurality (for example, four) of planting claws 18 arranged in the Y-axis direction.

  In addition, as can be understood from the above description, in the present embodiment, the function as the main body that moves in the field is realized by the main body frame 10 and the crawler 12.

  As described above in detail, according to the present embodiment, the seedling transplanting apparatus 100 is provided with the main body frame 10 that moves in the field by the crawler 12 and the planting that transplants the seedling to the field. A claw 18 and a cut-and-raised body 20 provided on the front side (+ X side) in the traveling direction of the planting claw 18 of the main body frame 10 are provided. The cut-and-raised body 20 has a pair of thin plate portions 34a and 34b facing each other, and the interval between the lower end portions of the pair of thin plate portions 34a and 34b is smaller than the interval between the upper end portions. In addition, the main frame 10 moves in the traveling direction with the lower end portions of the pair of thin plate portions 34a and 34b entering the ground of the field, so that the soil at the place where the seedlings are to be transplanted becomes a pair of thin plate portions 34a and 34a. 34b. That is, in the present embodiment, when the lower end portion of the cut and raised body 20 passes through the ground, the soil at the location where the seedlings are transplanted can be crushed, and the crushed soil can be returned to the original place. Thereby, the soil at the place where the seedlings are planted is softened, and the planting claws 18 are easily pierced, so that the seedlings can be planted at a desired depth. In addition, since the place where the seedlings are planted does not become a groove and the crushed soil is present, it is possible to prevent the planted seedlings from falling down. As described above, in the present embodiment, the seedlings are planted in an appropriate state without being shallowly planted, so that the growth is better than in the case of shallow planting, and the number of days until harvest can be reduced.

  In the present embodiment, the cut-and-raised body 20 has a connecting portion 34c that connects the lower ends of the pair of thin plate portions 34a and 34b. Thereby, since the strength of the cut and raised body 20 can be increased, it is possible to suppress the deformation of the cut and raised body 20 due to resistance due to contact with the soil.

  Further, in the present embodiment, the cut-and-raised body 20 is provided on the rotating shaft member 32, and is rotated around the rotating shaft member 32 so that the lower end portions of the thin plate portions 34 a and 34 b are grounded. The state transitions between a state in which the thin plate portions 34a and 34b are positioned above the ground surface and a standby state (a state in which the lower ends of the thin plate portions 34a and 34b are located above the ground surface). This makes it possible to easily transition the cut-and-raised body 20 to an appropriate state when the seedling transplanting apparatus 100 performs the planting operation and when the seedling transplanting apparatus 100 moves in the field without performing the planting operation. Can be. That is, when the seedling transplanting device 100 changes direction during the planting operation, or moves to the planting start position when starting the planting operation, the planting end device moves from the planting end position to another position after the planting operation is completed. In the case where the field is moved without performing the planting operation, such as when the field is moved, the cut-and-raised body 20 can be prevented from contacting the soil of the field. Can be prevented from becoming a hindrance (becoming a resistance when moving).

  In the present embodiment, the planting claw 18 is positioned between the pair of thin plate-shaped portions 34a and 34b when the cut-and-raised body 20 is in a standby state. Thereby, when in the standby state, that is, at the time of storage, the installation space of the cut-and-raised body 20 can be reduced.

(Modification)
In the above embodiment, the case where the cut-and-raised body 20 has a shape as shown in FIG. 3 has been described, but the present invention is not limited to this. For example, the cut-and-raised body 20 may have a shape as shown in FIGS. 9 (a) to 10 (c).

  The cut and raised body 120 of FIG. 9A has a pair of thin plate portions 34a and 34b, like the cut and raised body 20 of FIG. 3, but the lower ends of the pair of thin plate portions 34a and 34b are connected. It has not been. Even in this manner, similarly to the cut and raised body 20 in FIG. 3, the soil at the place where the seedlings are planted can be crushed, and the crushed soil can be returned to the original position.

  The cut-and-raised body 121 in FIG. 9B has a pair of thin plate portions 134a and 134b extending in the Z-axis direction, and a lower end of the pair of thin plate portions 134a and 134b extends in the Y-axis direction. 134c. Even in this case, similarly to FIG. 3, the soil at the place where the seedlings are planted can be crushed, and the crushed soil can be returned to the original position. Further, the strength of the cut-and-raised body 121 can be increased by the connecting portion 134c.

  In the cut-and-raised body 122 of FIG. 9C, a gap 134d is formed in a part of the connecting portion 134c of the cut-and-raised body 121 of FIG. 9B. Even with such a cut-and-raised body 122, the soil at the location where the seedlings are to be planted can be crushed and the crushed soil can be returned to the original position.

  The pair of thin plate portions 234a and 234b of the cut and raised body 123 in FIG. 9D have a curved shape, unlike the pair of thin plate portions 34a and 34b of the cut and raised body in FIG. The lower ends of the pair of thin plate portions 234a and 234b are connected by a connecting portion 234c. Even with such a cut-and-raised body 123, as in the case of the cut-and-raised body 20 of FIG. 3, it is possible to crush the soil where the seedlings are to be planted and return the crushed soil to its original position. Further, since the lower ends of the pair of thin plate portions 234a and 234b are connected by the connecting portion 234c, the strength of the cut and raised body 123 can be increased.

  The cut and raised body 124 of FIG. 10A has a pair of thin plate portions 234a and 234b, like the cut and raised body 123 of FIG. 9D, but the lower ends of the pair of thin plate portions 234a and 234b. Parts are not connected. Even in this case, similarly to the cut and raised body 123 in FIG. 9D, the soil at the place where the seedlings are planted can be crushed, and the crushed soil can be returned to the original position.

  The cut and raised body 125 in FIG. 10B has a substantially U-shaped shape. Even with such a shape, the same effect as that of the cut-and-raised body 20 in FIG. 3 can be exerted.

  The cut-and-raised body 126 in FIG. 10C has thin plate-shaped portions 334a and 334b extending in the Z-axis direction. That is, the interval between the lower ends of the thin plate portions 334a and 334b is the same as the interval between the upper ends. Even with such a shape, the same effect as the cut and raised body 120 of FIG. 9A and the cut and raised body 124 of FIG. 10A can be exerted.

  In the above-described embodiment, the case where the seedling transplanting apparatus 100 is a fully automatic transplanting apparatus has been described. However, the present invention is not limited thereto, and may be a semi-automatic transplanting apparatus. That is, the seedling extracting unit 14 may be omitted from the seedling transplanting apparatus 100 of FIG. In this case, the operator may throw the seedlings into the seedling guiding cylinder 16.

  The above-described embodiment is a preferred embodiment of the present invention. However, the present invention is not limited to this, and various modifications can be made without departing from the scope of the present invention.

10 Body frame (part of body part)
12 Crawler (part of main body)
18 Planting nails (transplantation mechanism)
Reference Signs List 20 cut and raised body 34a, 34b thin plate-like portion 34c connecting portion 100 seedling transplantation device

Claims (4)

A seedling transplantation apparatus for transplanting seedlings into the field while moving the field along the traveling direction,
A main body moving the field,
A transplant mechanism that is provided in the main body and transplants seedlings to the field,
A cut-and-raised body provided on the front side in the traveling direction of the main body with respect to the transplantation mechanism,
The cut-and-raised body has a pair of thin plate-shaped portions facing each other, the interval between lower ends of the pair of thin portions is smaller than or equal to the interval between upper ends, and the lower end of the pair of thin portions is A seedling transplanting device, wherein the soil at the place where the seedlings are transplanted passes between the pair of thin plate-shaped portions by moving the main body portion in the traveling direction in a state where the seedlings are in the ground. .   The seedling transplantation device according to claim 1, wherein the cut-and-raised body has a connecting portion that connects lower ends of the pair of thin plate portions.   The cut-and-raised body is rotated about a rotation shaft provided on the pair of thin plate portions, so that a lower end portion of each of the pair of thin plate portions enters the ground, The seedling transplanting apparatus according to claim 1, wherein a transition is made between a second state in which a lower end of each of the pair of thin plate portions is located above the ground surface. 4. The seedling transplantation device according to claim 3, wherein when the cut-and-raised body is in the second state, the transplantation mechanism is located between the pair of thin plate portions. 5.

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