JP2011244764A - Transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transplanter equipped with a seedling-carrying platform for carrying out transplantation operation in excellent workability and efficiency even in a cell tray in which seedlings are raised or in a box or storage vessel in which seedlings are stored.SOLUTION: In the transplanter equipped with a seedling supply device 24 for supplying seedlings to a machine furnished with a travel device 7, a seedling planting body 5 vertically moved by a vertical motion mechanism 4 and planting seedlings in a field, and the seedling-carrying platform 89, the seedling-carrying platform 89 is equipped with a plurality of stages of seedling-carrying parts 101a, 101b, and 101c, the seedling carrying parts 101a and 101b above the lowermost seedling carrying part 101c are freely changeable from a seedling carrying state in which the carrying parts are in parallel with or approximately in parallel with the lowermost carrying part 101c to a folded storage state in which the upper side of the lowermost carrying part 101c is opened.

Description

  The present invention relates to a transplanting machine for transplanting seedlings in a field with a seedling planting body, and more particularly to a transplanting machine equipped with a cell tray on which seedlings have been bred, a container or a box containing seedlings, and a seedling mounting stage on which a box is placed. .

  Some transplanting machines for transplanting seedlings in a field with a seedling planting body are equipped with a seedling mounting base provided with a plurality of seedling mounting parts for mounting a cell tray on the side of the machine body.

JP 2009-195176 A

  The above-mentioned background art is equipped with a seedling mounting base provided with a plurality of seedling mounting parts for mounting the cell tray on the side of the machine body, so that a plurality of cell trays can be placed on the machine body and the transplanting work efficiency is improved. However, there is a problem that it is difficult to take out the cell tray placed on the seedling mounting part below the upper stage among the plurality of seedling mounting parts because the upper seedling mounting part is obstructive. In addition, for example, when transplanting a commercially available seedling in a box, the height of the box is so high that it can only be placed on the uppermost seedling loading section, and the operator must It is difficult to take out the seedling from the box placed on the seedling placement section and perform the transplantation work, and there is a problem that the work efficiency is poor.

  Then, this invention makes it a subject to provide the transplanting machine equipped with the seedling mounting stage which can perform a transplantation operation | work efficiently and efficiently with the cell tray which grew the seedling, the box and the container which stored the seedling.

In order to solve the above problems, the present invention has taken the following technical means.
The invention according to claim 1 includes a seedling planting body 5 and a seedling mounting stand 89 that are moved up and down by a seedling supply device 24 that feeds seedlings to a machine body provided with a traveling device 7 and a vertical movement mechanism 4 and planting seedlings in a field. In the transplanting machine equipped, the seedling mounting stage 89 is provided with a plurality of seedling mounting parts 101a, 101b, 101c, and the seedling mounting parts 101a, 101b above the lowermost lower seedling mounting part 101c are arranged at the lower seedling mounting part 101c. The transplanter is configured to be switchable between a seedling placement state that is parallel or substantially parallel to and a folded storage state in which the upper portion of the lower seedling placement portion 101c is opened.

  Therefore, according to the first aspect of the present invention, when transplanting seedlings of the cell tray T, all the seedling mounting portions 101a, 101b, and 101c are placed in the seedling mounting state, the cell tray T is mounted on each seedling mounting portion, and transplanted Start work. The cell tray T is taken out in order from the upper stage among the plurality of seedling placement parts 101a, 101b, and 101c, and the seedling placement parts 101a and 101b from which the cell tray T has been taken out are switched from the seedling placement state to the folded storage state. Since the upper portion of the seedling mounting portion 101c on which T is placed is an open space, the cell tray T can be easily taken out, and workability and work efficiency are good.

  Further, when transplanting seedlings stored in a box or container such as a cardboard box, the lower seedling mounting portion 101c is formed by folding the seedling mounting portions 101a and 101b above the lowermost lower seedling mounting portion 101c into the folded storage state. Since the space above is open, it is possible to place a box or a container such as a cardboard containing seedlings in the lower seedling mounting portion 101c. And an operator can take out a seedling easily from boxes and storage containers, such as a corrugated cardboard mounted in this lower seedling mounting part 101c, and workability and work efficiency are good.

  The invention according to claim 2 is a seedling placement state in which the uppermost seedling mounting portion 101a on the seedling support frame 100 provided on the machine body is directed from the seedling support frame 100 toward the inside of the body with the upper pivot shaft 102a. And the seedling support frame 100 is rotated to the outside of the machine body so that it can be freely switched to the folded storage state facing downward, and the middle seedling mounting portion between the upper seedling mounting portion 101a and the lowermost lower seedling mounting portion 101c. Rotate 101b to the seedling support frame 100 to the position along the inside of the seedling support frame 100 from the seedling support frame 100 and to the position along the inside of the seedling support frame 100 by the middle stage pivot shaft 102b. The lower-stage seedling mounting portion 101c is fixed to the seedling support frame 100 in a state in which the lower seedling mounting portion 101c is mounted on the seedling support frame 100 in a state where the seedling is mounted toward the inside of the machine body. Described transplanter It was.

  Therefore, in addition to the operation of the invention described in claim 1, the invention described in claim 2 puts all the seedling mounting portions 101a, 101b, 101c in a seedling mounting state when transplanting seedlings of the cell tray T, The cell tray T is placed on each seedling placement part, and transplantation work is started. Then, first, the cell tray T is taken out from the upper seedling placing portion 101a, and when the upper seedling placing portion 101a is rotated from the seedling placing state to the outside of the body of the seedling support frame 100 and switched to the folded storage state facing downward, Since the upper part of the middle seedling placing part 101b is an open space, the cell tray T can be easily taken out from the middle seedling placing part 101b. Then, when the middle stage seed placement part 101b is rotated from the seedling placement state to a position along the inside of the seedling support frame 100 and switched to the folded storage state facing upward, the upper part of the lower stage seed placement part 101c is opened. Therefore, the cell tray T can be easily taken out from the lower seedling mounting portion 101c, and the workability and work efficiency are good.

  Further, when transplanting seedlings stored in a box such as a cardboard box or a container, the upper seedling mounting portion 101a is rotated to the outside of the body of the seedling support frame 100 so as to be folded and stored in the middle stage seedling. When the mounting portion 101b is rotated to a position along the inside of the seedling support frame 100 to be in the folded storage state facing upward, the upper portion of the lower seedling mounting portion 101c fixed to the seedling support frame 100 is opened. Therefore, it is possible to place a box or a container such as a cardboard containing seedlings in the lower seedling placing portion 101c. And an operator can take out a seedling easily from boxes and storage containers, such as a corrugated cardboard mounted in this lower seedling mounting part 101c, and workability and work efficiency are good. At this time, a cardboard box or container containing seedlings is placed on the lower seedling mounting portion 101c fixed to the seedling support frame 100, so the cardboard box or container containing seedlings is stable. It can be placed in a state, and a good seedling removal operation can be performed, resulting in high work efficiency.

  Further, the upper seedling mounting portion 101a is rotated from the seedling placement state to the outside of the body of the seedling support frame 100 to switch to the folded storage state facing downward, so that the upper seedling mounting portion 101a is supported in the folded storage state. Since it does not protrude upward from the frame 100, it is possible to avoid a situation in which the machine body height is increased and the upper seedling mounting portion 101a is in contact with another object and is damaged.

  The invention according to claim 3 includes a tray fall prevention body 103e that protrudes upward from the wall 103c of the seedling placement portions 101a, 101b, and 101c on the side that is inclined downward when the traveling device 7 is moved downward to raise the machine body. The transplanter according to claim 1 or claim 2 provided.

  Therefore, in addition to the action of the invention of claim 1 or claim 2, the invention of claim 3 lowered the traveling device 7 to raise the fuselage in order to turn the fuselage at the end of the heel U. Since the tray drop prevention body 103e that protrudes upward from the wall 103c of the seedling placement portions 101a, 101b, and 101c on the side that is inclined lowly is provided even if the aircraft is greatly inclined in the front-rear direction, the seedling placement portion The cell tray T placed on 101a, 101b, and 101c can be prevented from dropping from the machine body by the tray drop prevention body 103e, a good turning operation can be performed, and a transplanting operation can be performed with good workability.

  The invention according to claim 4 is provided with a seat 79 on which an operator sits on the body to perform transplantation work, and the seedling mounting portions 101a, 101b, and 101c of the left and right seedling mounting bases 89 face the seat 79 and the left and right sides of the body. The transplanter according to any one of claims 1 to 3, wherein the right and left seedling mounting base 89 is configured to be switchable between a state of projecting laterally and a state of being housed in the body in front of the seat 79. did.

  Therefore, in the invention described in claim 4, in addition to the operation of the invention described in any one of claims 1 to 3, the left and right seedling mounts 89 are arranged on the left and right sides of the seat 79 on the left and right sides of the body. In this state, the operator can easily take out the cell tray and the seedling from the left and right seedling mounts 89, and an appropriate transplanting operation with good workability and efficiency can be performed.

  Further, if the left and right seedling mounts 89 are housed inward in a state where the width of the left and right sides of the aircraft is narrowed at the front position of the aircraft in front of the seat 79, the steering operation of the aircraft is facilitated when traveling on the road. The operability of the aircraft is good. In addition, when the aircraft is loaded on a loading platform such as a truck or when the aircraft is accommodated in a barn or the like, the lateral width of the aircraft is reduced, so that the aircraft can be accommodated in a narrow space.

The invention according to claim 5 is the transplanter according to any one of claims 1 to 4, wherein the vertical intervals of the plurality of seedling placement portions 101a, 101b, and 101c are configured to be freely adjustable.
Therefore, in addition to the action of the invention according to any one of claims 1 to 4, the invention according to claim 5 is adapted to the kind of seedling to be transplanted and the difference in height of the seedling in the transplanting operation. Thus, the operator can adjust the intervals between the plurality of seedling placement parts 101a, 101b, and 101c, so that transplantation can be performed appropriately with good workability.

  Therefore, the transplanting machine according to the present invention can perform transplantation work efficiently and efficiently even in a cell tray in which seedlings have been nurtured or a box or a container such as a cardboard containing seedlings, and appropriately solves the problems of the invention with a simple configuration. can do.

It is a side view of a transplant machine. It is a top view of a transplant machine. It is a figure which shows a winding sprocket and its periphery (a: top view, b: perspective view). It is a perspective view which shows a seedling planting apparatus. It is an effect explanatory view which shows an effect | action of the seedling supply apparatus and seedling planting apparatus when it sets to 300 mm between stripes (a: Plan view for action description, b: Back view for action description). It is an effect explanatory view which shows an effect | action of the seedling supply apparatus and seedling planting apparatus when it sets to 300 mm between stripes (a: Plan view for action description, b: Back view for action description). It is an action explanatory view showing an operation of a seedling supply device and a seedling planting device when set to 350 mm between stripes (a: top view for explaining operation, b: rear view for explaining operation). It is an action explanatory view showing an operation of a seedling supply device and a seedling planting device when set to 350 mm between stripes (a: top view for explaining operation, b: rear view for explaining operation). It is an effect explanatory view which shows an effect | action of the seedling supply apparatus and seedling planting apparatus when set to 400 mm between stripes (a: Plan view for action description, b: Rear view for action description). It is an effect explanatory view which shows an effect | action of the seedling supply apparatus and seedling planting apparatus when set to 400 mm between stripes (a: Plan view for action description, b: Rear view for action description). It is an action explanatory view showing an operation of a seedling supply device and a seedling planting device when set to 450 mm between stripes (a: top view for explaining operation, b: rear view for explaining operation). It is an action explanatory view showing an operation of a seedling supply device and a seedling planting device when set to 450 mm between stripes (a: top view for explaining operation, b: rear view for explaining operation). It is an action explanatory view showing an operation of a seedling supply device and a seedling planting device when it is set to 500 mm between stripes (a: top view for explaining operation, b: rear view for explaining operation). It is an action explanatory view showing an operation of a seedling supply device and a seedling planting device when it is set to 500 mm between stripes (a: top view for explaining operation, b: rear view for explaining operation). It is a top view for action explanation which shows the arrangement relation of a rear wheel, a seedling planting device, and a pressure reducing wheel. It is a hydraulic circuit diagram which moves a right-and-left rear wheel up and down. It is a perspective view for action explanation which shows the up-and-down operation mechanism of a pressure reducing wheel. It is a side view which shows the up-and-down action mechanism of a pressure reducing wheel. It is a perspective view which shows the up-and-down action mechanism of a pressure reducing wheel. It is a rear view which shows a suppression wheel and an indicator. It is a perspective view for effect | action description which shows a parking stand. It is a side view of a seedling stand. It is a rear view for function explanation of a seedling stand. It is a perspective view for effect | action description of the rotation pivot support part of a seedling stand. It is a rear view for effect | action description of the rotation pivotal support part of a seedling stand. It is a rear view which shows the other example of a seedling stand. It is a perspective view which shows the other example of a seedling stand.

  A transplanter 1 according to an embodiment of the present invention will be described below. In the following description, the side on which the steering handle 2 is disposed is the rear, and the opposite side, that is, the side on which the engine 3 is disposed is the front. Then, the right hand side of the worker standing toward the front side of the machine body at the rear part of the machine body is set to the right, and the left hand side is set to the left.

  The transplanter 1 is provided with two openable and openable beak-like seedling planting bodies 5 that are moved up and down by a vertical movement mechanism 4 that is driven up and down to a machine body that includes a steering handle 2, and a pair of left and right front wheels 6 that are supported to roll freely. And a pair of left and right rear wheels 7, which is a traveling device that is driven to rotate by transmitting the power of the engine 3. The front wheel 6 and the rear wheel 7 can be guided in the gutter groove so that the aircraft can travel above the gutter U.

  A mission case 8 is disposed at the rear of the engine 3, and the output shaft of the engine 3 enters the mission case 8, and engine power is transmitted from the output shaft of the engine 3 to the transmission mechanism in the mission case 8. It has a configuration. A transmission case 9 is attached to both left and right sides of the transmission case 8 so as to be rotatable about a rotation fulcrum 9a, and the wheel drive is extended from the transmission case 8 to the left and right sides of the transmission case 9a. The tip of the shaft enters and transmits driving power to the transmission mechanism in the transmission case 9. The traveling power is transmitted to the axle 10 extending rearward of the machine body and projecting laterally on the rear end side via a transmission mechanism in the transmission case 9, and the rear wheel 7 is driven to rotate. .

  A hydraulic rolling cylinder 11 that can be expanded and contracted to adjust the horizontal tilt of the machine body is provided on the left side of the machine body, and can be rotated around a vertical axis by a lifting hydraulic cylinder 14 described later at the tip of a piston rod 11a of the rolling cylinder 11. The left end part of the balance rod 12 provided in is attached. Further, the right end of the balance rod 12 is connected to the rod 13.

  When the lifting control valve B1 is switched based on the detection result of the saddle height detection sensor S in the lifting hydraulic cylinder 14 provided in the center of the body, and the piston rod 14a protrudes rearward of the body, the rod 13 and the rolling cylinder 11 also moves rearward, and the left and right arms 16a connected to the respective bases of the rod 13 and the rolling cylinder 11 are rotated rearward in a side view of the body, and accordingly, the bases of the left and right arms 16a are fixed to each other. The left and right transmission cases 9 are rotated downward about the rotation fulcrum 9a, the left and right rear wheels 7 are lowered, and the body is raised. On the other hand, when the piston rod 14a of the lifting hydraulic cylinder 14 is retracted forward, the left and right arms 16a are rotated forward, and accordingly, the left and right transmission case 9 is rotated upward about the rotation fulcrum 9a. The left and right rear wheels 7 are raised and the aircraft is lowered.

  Here, the configuration of the part in which the right and left transmission case 9 rotates about the rotation fulcrum 9a through the left and right arms 16a in the lifting hydraulic cylinder 14 and the left and right rear wheels 7 move up and down will be described in detail. Hexagonal tubular left and right pivot cylinders 16b are provided on both sides of the mission case 8 so as to rotate around the left and right axle housings 8a provided to project outward from the left and right sides of the machine body, and left and right arms 16a are respectively provided on the left and right pivot cylinders 16b. The left and right rotating cylinder portion 16b is configured to be rotatably supported by the distal ends of left and right support bodies 20a whose base portions are fixed to the airframe. Then, a hexagonal cylindrical left and right internal rotation cylinder portion 16c that can be telescopically moved in the left and right direction by fitting with the internal hexagon of the left and right rotation cylinder portion 16b is provided, and the outer end of the left and right internal rotation cylinder portion 16c is provided. The base of the left and right transmission case 9 that swings up and down is fixed. In addition, left and right drive shafts for transmitting power from the transmission case 8 to the left and right transmission case 9 are provided in the left and right internal rotation cylinder portion 16c so as to coincide with the rotation fulcrum 9a.

  The left and right internal rotation cylinder portion 16c fitted into the left and right rotation cylinder portion 16b penetrates from the outer periphery of the left and right rotation cylinder portion 16b, and the left and right ends of the left and right internal rotation cylinder portions 16c are in contact with the outer periphery. The left-right movement is fixed by a bolt 16d with a handle. That is, when adjusting the horizontal position (tread adjustment) of the left and right rear wheels 7 in order to cope with the heel U width, the bolt 16d with the left and right handles is loosened and the left and right internal rotation with respect to the left and right rotation cylinder portion 16b is performed. The cylinder part 16c is moved in the left-right direction of the machine body to adjust the position of the left and right rear wheels 7, and the bolts 16d with left and right handles are tightened again to fix the left and right internal turning cylinder part 16c to the left and right turning cylinder part 16b. In this way, the left and right rear wheels 7 can be freely adjusted in the left-right position (tread adjustment).

  Further, when the rolling cylinder 11 is expanded and contracted, only the left transmission case 9 is moved up and down, and only the left rear wheel 7 is moved up and down, and the body is tilted left and right. Then, the rolling control valve B2 is operated by operating the manual machine tilt adjustment lever 15 provided in the vicinity of the feet of the worker who is seated in the seat 79 described later and is performing the transplanting operation, so that the operator Can arbitrarily expand and contract the rolling cylinder 11. That is, the operator can arbitrarily tilt the machine body left and right by arbitrarily operating the manual machine body tilt adjustment lever 15 according to the conditions of the field. For example, in a farm field on a sloping slope in a mountainous area, when the left and right grooves of the kite U have different heights, when the aircraft runs along the kite U, the aircraft is tilted toward the valley side. When the manual cylinder tilt adjustment lever 15 is operated and the rolling cylinder 11 is expanded and contracted so that the valley-side rear wheel 7 moves downward from the mountain-side rear wheel 7, the body is corrected to a horizontal state. It is possible to carry out transplanting work of seedlings appropriate for the cocoon U.

  The pair of front wheels 6 is rotatably attached to an axle 19 fixed to the side of the lower end of an arm portion 18 that extends downward from the left and right sides of the front wheel support frame 17 that extends from the left and right center position below the engine 3 to the left and right. .

  The steering handle 2 is attached to the rear end portion of the body frame 20 whose front end portion is fixed to the mission case 8. The body frame 20 is disposed at the center of the left and right sides of the body and extends rearward, and extends obliquely rearward and upward from the front and rear intermediate portion. The steering handle 2 extends rearward from the rear end portion of the body frame 20 to the left and right, and the rear end portions thereof serve as grip portions 2 a and 2 a of the steering handle 2. The left and right grip portions 2a of the steering handle 2 are set to an appropriate height so that the operator can easily grip the grip portions 2a and 2a with hands. In the example shown in the figure, the grip portions 2a and 2a are divided into left and right, but the left and right rear end portions of the steering handle 2 may be connected to each other left and right, and the connecting portion may be used as the grip portion 2a.

  The vertical movement mechanism 4 for operating the seedling planting body 5 is attached to a planting transmission case 22 in which power is transmitted from the transmission case 8 through the transmission shaft 21. In the planting transmission case 22, a transmission mechanism for transmitting power for driving the seedling planting body vertical movement mechanism 4 to move up and down is provided.

  The transmission mechanism in the planting transmission case 22 includes an intermittent drive mechanism that stops the vertical movement mechanism 4 and the pair of left and right seedling planting bodies 5 at the highest position of the vertical movement or at a position near the vertical movement mechanism, And a clutch mechanism that stops the vertical movement mechanism 4 and the seedling planting body 5 from moving up and down. The time to stop by the intermittent drive mechanism is adjusted by a speed change mechanism provided in the intermittent drive mechanism, and the adjustment is performed to change and adjust between the seedling planting stocks by the seedling planting body 5 by this adjustment.

  The seedling supply device 24 that supplies seedlings to the seedling planting device 23 including the seedling planting body 5 receives a seedling from above and accommodates seedlings inside thereof (32 seedling supply cups serving as a plurality of seedling containers). 25, a moving mechanism 26 for moving the seedling supply cup 25 so as to pass above the seedling planting body 5, and a bottom portion of the seedling supply cup 25 at the upper position of the seedling planting body 5 to be accommodated inside. An opening mechanism 27 serving as a seedling dropping supply mechanism that drops seedlings and supplies seedlings to the seedling planting body 5 is provided. The seedling supply cup 25 has a cylindrical body that opens up and down and a bottom lid 25a that opens and closes an opening on the lower side of the cylindrical body, and is connected to each other in a loop shape. The moving mechanism 26 is configured to rotate around an oval loop trajectory that is long to the left and right as viewed from above. The opening mechanism 27 is configured to open the bottom lid 25 a of the seedling supply cup 25 at a position above the seedling planting body 5. The seedling supply device 24 is configured to supply the seedlings by moving the seedling supply cup 25 around the two seedling planting bodies 5 in one round.

  A cylindrical outer peripheral portion is formed on the outer periphery of the seedling supply cup 25, and an engagement portion (round hole) that engages with the cylindrical outer periphery in a freely rotatable manner is provided to connect the two seedling supply cups 25. A plurality of bodies 28 are provided, the engaging part of the connecting body 28 is rotatably engaged with the outer peripheral part of the cylinder of the seedling supply cup 25, and the adjacent seedling supply cup 25 is rotatable about the outer peripheral part of the cylinder as a rotation axis. A plurality of seedling supply cups 25 are connected to each other. In other words, the seedling supply cup 25 and the connecting body 28 are connected like an endless chain. As a result, the seedling supply cup 25 supplies the seedlings from the seedling supply cup 25 to the seedling planting body 5 because the distance between the seedling supply cup 25 and the adjacent seedling supply cup 25 does not change regardless of whether the seedling supply cup 25 moves linearly or circularly. Thus, the seedling supply cup 25 is less likely to be displaced with respect to the seedling planting body 5, and the seedling supply is properly performed, so that an accurate seedling can be transplanted.

  The moving mechanism 26 wraps the seedling supply cup 25, which is connected to each other like an endless chain, by engaging with the arcuate cutouts on the outer periphery of the winding sprocket 29 provided on the left and right sides. By driving and rotating with the power extracted from the planting transmission case 22, the seedling supply cup 25 is configured to rotate counterclockwise in plan view of the machine body. From each of the output shafts, each rotary shaft 30 to which the winding sprocket 29 is rotatably attached is attached to a support frame that extends from the planting transmission case 22 to the left and right, and protrudes upward from the upper portion of the planting transmission case 22. The drive sprocket 33, the chain 34, and the driven sprocket 35 are transmitted to the rotating shaft 30 that rotates integrally with the driven sprocket 35. The driven sprocket 35 and the winding sprocket 29 are coupled by a bolt 36 so that both rotate integrally. Therefore, the circumferential movement path of the seedling supply cup 25 includes left and right semicircular arc-shaped portions 37 and front and rear linear portions 38 connected to the arc-shaped portion 37. Then, the seedling supply cup 25 moves to the right in the linear portion 38 on the rear side so as to pass above the left and right seedling planting bodies 25, and the seedlings fall into the seedling planting body 5 in the linear portions 38. Left and right drop supply positions 39 and 40 to be supplied are set. The left and right rotation shaft 30 around which the seedling supply cup 25 circulates is disposed on the inner side of the left and right rear wheels 7 and on the rear side of the axle 10 position of the rear wheels 7. The seedling planting body 5 is arranged on the rear side of the axle 10 position of the rear wheel 7.

  The bolt 36 is screwed into the screw hole of the driven sprocket 35 from below through an arc-shaped long hole 29a provided in the winding sprocket 29 that is long in the rotational direction. Therefore, by loosening the bolt 36, the rotational phase of the driven sprocket 35 and the winding sprocket 29 can be changed and adjusted within the range of the arc-shaped elongated hole 29a. The adjustment range by the arc-shaped elongated hole 29a is an arrangement pitch of the seedling supply cup 25 in the winding sprocket 29 (one half of an arrangement pitch of first and second seedling supply cups 25b and 25c described later). ) Is set. The arcuate long holes 29a, bolts 36, and the like accommodate the seedlings that are dropped and supplied to the seedling planting bodies 5 when the left and right seedling planting bodies 5 are moved upward in accordance with the change of the left and right fall supply positions 39, 40. The rotation timing changing mechanism C changes the rotation position of the seedling supply cup 25 with respect to the operation of the vertical movement mechanism 4 so that the seedling supply cup 25 reaches the drop supply positions 39 and 40.

  A plurality (32 in total) of seedling supply cups 25 are exclusively used for the first seedling supply cup 25b that accommodates seedlings to be supplied at one (left side) drop supply position 39, and the other (right side) drop supply position 40 is provided. A total of 16 second seedling supply cups 25c that contain seedlings to be supplied in a separate manner, and the first seedling supply cup 25b and the second seedling supply cup 25c are alternately connected to each other. It has become. And when the 1st seedling supply cup 25b is located in one fall supply position 39, it has set so that the 2nd seedling supply cup 25c may be located in the other fall supply position 40. Accordingly, the first and second seedling supply cups 25b and 25c are moved by the moving mechanism 26 around the looped path with the same amount of movement. 39 and 40 are configured to reach the same number of times at the same timing. Then, the bottom cover 25a of the first seedling supply cup 25b that accommodates the seedling to be supplied to the left seedling planting body 5 is provided with a protrusion 41 at the right end (outer end of the circulation) with respect to the circulation direction. . On the other hand, the bottom lid 25a of the second seedling supply cup 25c that accommodates the seedlings to be dropped and supplied to the right seedling planting body 5 is provided with a protrusion 41 at the left end (inner end of rotation) with respect to the rotation direction. .

  The opening mechanism 27 is provided with a support 42 that supports the bottom cover 25a from below so that the bottom cover 25a does not rotate downward below the orbit of the seedling supply cup 25. The support 42 is a seedling planting body. 5 so that the bottom cover 25a is supported by the support 42 when the seedling supply cup 25 passes through the upper position (the drop supply positions 39, 40) of the seedling planting body 5. Is released and rotated downward by its own weight and the gravity of the seedling, and the lower part of the seedling supply cup 25 is opened so as to drop the seedling downward. In addition, the rotation fulcrum of the bottom cover 25a is provided in the lower rotation side part of the seedling supply cup 25, and the bottom cover 25a is configured to open from the upper rotation side of the seedling supply cup 25.

  The support body 42 includes fixed support bodies 42a, 42b, 42c, and 42d fixed to the airframe, and movable support bodies 42e and 42f that can change positions relative to the airframe. The fixed supports 42 a, 42 b, 42 c, and 42 d include a main fixed support 42 a that covers the entire region of the left and right arc-shaped portions 37 and the front linear portion 38 in the circulation locus of the seedling supply cup 25, and the rear linear portion 38. Are provided with first, second and third sub-fixing supports 42b, 42c and 42d. The main fixed support 42a and the first, second, and third sub fixed supports 42b, 42c, and 42d are made of bar material. The main fixed support 42a is extended along the circular trajectory of the seedling supply cup 25 so as to contact the center of the bottom cover 25a, and opens the bottom lid 25a of the first and second seedling supply cups 25b and 25c. Support not to be. The first sub-fixing support 42b is provided in a straight line along the circulation locus of the seedling supply cup 25 so as to contact the protrusion 41 provided at the outer end of the rotation in the bottom lid 25a of the first seedling supply cup 25b. The bottom cover 25a of the first seedling supply cup 25b is supported so as not to open. The first sub-fixing support 42b supports the bottom cover 25a by closing and supporting only the bottom cover 25a of the first seedling supply cup 25b from the middle of the rectilinear portion 38 in the circumference of the seedling supply cup 25. Is provided at a position on the right side of the linear portion 38 on the rear side and on the upper side of the bottom lid of the main fixed support 42a so that the subsequent main fixed support 42a is taken over. The second sub-fixing support 42c is provided in a straight line along the circumferential locus of the seedling supply cup 25 so as to contact the protrusion 41 provided on the inner end of the circumference of the bottom lid 25a of the second seedling supply cup 25c. The bottom cover 25a of the second seedling supply cup 25c is supported so as not to open. The second sub-fixing support 42c takes over the support of the bottom cover 25a of the main fixed support 42a in the circumference of the seedling supply cup 25 and supports only the bottom cover 25a of the second seedling supply cup 25c. It is provided at a position on the left side of the linear portion 38 on the rear side and on the lower side of the bottom cover around the main fixed support 42a. The third sub-fixing support 42d is configured to contact the center of the bottom cover 25a, and the bottom cover 25a of the first seedling supply cup 25b from the middle of the linear portion 38 on the rear side in the circumference of the seedling supply cup 25. Is provided with a lower inclined portion toward the upper side of the circuit, and is closed while guiding the bottom lid 25a of the first seedling supply cup 25b opened at the inclined portion to the upper side. It is provided at a substantially central position of the portion 38 and in parallel with the start end (left end) of the first sub-fixing support 42b around the bottom lid. The end (right end) of the third sub-fixing support 42d in the bottom lid circulation is positioned on the upper side (left side) in the bottom lid rotation from the termination (right end) of the second sub-fixing support 42c in the bottom lid rotation. is doing. In addition, the start end part in the bottom cover circulation of the main fixed support 42a is provided with an inclined part that is lower on the upper side of the circulation so as to close the bottom cover 25a of the second seedling supply cup 25c, and is opened at the inclined part. The bottom lid 25a of the seedling supply cup 25c is closed while being guided upward.

  The first sub-fixing support 42b is provided by fixing the right end to a first support member 43 extending from the support frame 31 to the right end of the linear portion 38 on the rear side. The second sub-fixing support 42c is fixed to the second support member 44 extending from the support frame 31 to the left end of the linear portion 38 on the rear side, and the right end is rearward from the planting transmission case 22. The third support member 45 extends and is fixedly provided. The third sub-fixing support 42d is fixedly provided on the third support member 45. The main fixed support 42 a is fixedly provided on the upper surfaces of the first support member 43 and the second support member 44.

  The moving supports 42e and 42f are composed of a first moving support 42e and a second moving support 42f provided on a part of the linear portion 38 on the rear side. The first moving support 42e and the second moving support 42f are made of a plate material. The first moving support 42e is provided in a straight line along the orbit of the seedling supply cup 25 so as to contact the protrusion 41 provided on the outer end of the circumference of the bottom lid 25a of the first seedling supply cup 25b. The first seedling supply cup 25b is configured to support the bottom cover 25a of the first seedling supply cup 25b so as not to open, and the first seedling supply cup is taken over by supporting the bottom cover 25a of the main fixed support 42a around the seedling supply cup 25. In order to support only the bottom cover 25a of 25b, it is provided on the left side of the linear portion 38 on the rear side and on the lower side of the bottom cover around the main fixed support 42a. The first moving support body 42e is laterally moved to the second support member 44 via a disc spring 47 'by means of a mounting bolt 47 provided through the elongated hole 46 provided in the left-right direction provided in the second support member 44. The position in the left-right direction can be changed by the long hole 46, and the position is fixed by the elastic force of the disc spring 47 ′. The mounting bolt 47 is located on the outer side (rear side) of the surrounding area of the seedling supply cup 25 and is provided at a position where the seedling supply cup 25 does not get in the way. The drop position changing mechanism B is configured by a long hole 46 and a mounting bolt 47 which are provided in the first moving support 42e and the second support member 44 in the left-right direction.

  The second moving support body 42f includes a linear portion along the circulation locus of the seedling supply cup 25 so as to abut on the protrusion 41 provided on the inner end of the rotation of the bottom lid 25a of the second seedling supply cup 25c, The second seedling supply cup 25c is configured to support the bottom cover 25a so as not to open. In the circumference of the seedling supply cup 25, the second seedling supply cup 25c takes over the support of the bottom cover 25a of the second auxiliary fixed support 42c. At the position on the right side of the linear portion 38 on the rear side so as to support the bottom lid 25a of the supply cup 25c and at the end of the main lid 42a on the upper side of the circumference of the bottom lid (the arc-shaped portion 37 on the right side in the circumferential locus) (Starting end portion) and is provided with a space. The second moving support member 42f is moved in the left-right direction via the disc spring 49 'to the third support member 42d by a mounting bolt 49 penetrating the elongated hole 48 provided in the left-right direction provided in the second moving support member 42f. It is mounted freely, and the position in the left-right direction can be changed by the long hole 48, and is fixed at the position by the elastic force of the disc spring 49 ′. The second moving support 42f has a U-shape in plan view that is divided into two parts: a position adjusting portion provided with a long hole 48 and a bottom lid supporting portion that supports the bottom lid 25a. The second sub-fixing support 42c is disposed between the position adjusting portion and the bottom lid support portion, and the bottom lid 25a can be reliably supported by taking over the second sub-fixing support 42c. . Further, when the position of the second movable support 42f is set to the position (left end position) closest to the bottom cover around the long hole 48, the bottom cover support part is connected to the second sub fixed support 42c and the third sub support support 42c. The second movable support 42f and the second and third sub-fixed supports 42c and 42d are compactly arranged. The mounting bolt 49 is located on the inner side (front side) of the surrounding area of the seedling supply cup 25 and is provided at a position where the seedling supply cup 25 does not get in the way. The drop position changing mechanism B is constituted by the second moving support 42f, the long hole 48 provided in the left-right direction and the mounting bolt 49, etc. provided in the second moving support 42f.

  Further, the right end of the first moving support 42e and the second moving support 42f (release the support of the protrusion 41 of the bottom cover 25a from below with the first moving support 42e or the second moving support 42f, If a seedling guide for properly supplying seedlings into the seedling planting body 5 is provided at the bottom lid 25a of the seedling supply cup 25b and the seedlings are supplied into the seedling planting body 5 The seedlings in the seedling supply cup 25 are appropriately supplied into the seedling planting body 5 at the supply positions 39 and 40, so that a seedling supply mistake from the seedling supply cup 25 to the seedling planting body 5 is prevented, and a lack of stock is prevented. At the same time, the inner seedling planting body 5 can plant seedlings in an appropriate posture, and the planting posture of the seedlings is improved.

  Two elongated holes 46 and 48 and two mounting bolts 47 and 49 for changing the positions of the first moving support 42e and the second moving support 42f are provided on the left and right sides, respectively, and the first moving support 42e. In addition, the second moving support 42f is configured to be movable in the left-right straight direction. Further, the amount of position change of the first moving support 42e and the second moving support 42f is regulated by the long holes 46 and 48 to the arrangement pitch in the seedling supply cup 25, and planting which will be described later by this regulating means. The drop supply positions 39 and 40 are not adjusted to an incorrect position by changing the position. Accordingly, when the first seedling supply cup 25b moves to the position where the bottom cover 25a of the first seedling supply cup 25b is not supported at the end (right end) on the lower side of the bottom cover around the first moving support 42e. The bottom lid 25a of the first seedling supply cup 25b is opened. That is, the end (right end) of the first moving support 42e on the lower side around the bottom lid is the first (left side) drop supply position 39. Further, when the second seedling supply cup 25c moves to a position where the bottom cover 25a of the second seedling supply cup 25c is not supported at the end (right end) on the lower side of the bottom cover around the second moving support 42f. The bottom lid 25a of the second seedling supply cup 25c is opened. That is, the end (right end) of the second moving support 42f on the lower side of the bottom lid circulation is the second (right) drop supply position 40. The second sub-fixing support 42c constitutes an opening restricting means for preventing the bottom cover 25a of the second seedling supply cup 25c from being opened at the first drop supply position 39 on the upper side of the circuit.

  Therefore, when the first moving support 42e is positioned on the most peripheral lower side (right side) by the long hole 46, and the second moving support 42f is positioned on the most peripheral upper side (left side) by the long hole 48, the first The distance between the drop supply position 39 and the second drop supply position 40 is the smallest, and the space between the planting strips is the narrowest. At this time, the distance between the left and right drop supply positions 39, 40 is three times the arrangement pitch in the seedling supply cup 25, that is, 1.5 times the arrangement pitch in the first and second seedling supply cups 25b, 25c. On the other hand, when the first moving support 42e is positioned on the most circumferential upper side (left side) by the long hole 46, and the second moving support 42f is positioned on the most lower rotating side (right side) by the long hole 48, the first The distance between the second drop supply position 39 and the second drop supply position 40 is the largest, and the space between the planting strips is the widest. At this time, the distance between the left and right drop supply positions 39 and 40 is 5 times the arrangement pitch in the seedling supply cup 25, that is, 2.5 times the arrangement pitch in the first and second seedling supply cups 25b and 25c. Accordingly, the drop supply positions 39 and 40 can be changed in position by the arrangement pitch in the seedling supply cup 25, and the distance between the left and right drop supply positions 39 and 40 is the first and second seedling supply. It changes by a distance of an integral multiple (1 times) of the arrangement pitch in the cups 25b, 25c (an even multiple (2 times) of the arrangement pitch in the seedling supply cup 25).

  The seedling planting device 23 moves up and down between a beak-shaped seedling planting body 5 whose tip is directed downward, and a position where the lower end of the seedling planting body 5 is above the farm scene and a position below the farm scene. A vertical movement mechanism 4 for moving the seedling planting body 5 up and down, a closed state in which the lower end portion of the beak-shaped seedling planting body 5 is closed and a seedling is received from above and a seedling can be accommodated inside, and the lower end of the seedling planting body 5 An opening / closing mechanism 50 for opening and closing the seedling planting body 5 is provided in an open state in which the part opens left and right and the seedling accommodated inside can be released downward.

  This transplanter 1 has a configuration of a plurality of planted plants in which a plurality of seedling planting bodies 5 are arranged side by side at set intervals. In this example, it is set as the structure of the two-row planting which arrange | positioned the seedling planting body 5 side by side with the set space | interval at a set interval.

  The two seedling planting bodies 5 are attached integrally to the vertical movement mechanism 4 provided on the left and right side portions of the planting transmission case 22. A beak-like seedling planting body 5 with the tip facing downward is composed of a left seedling planting body 5L and a right seedling planting body 5R, and is divided into left and right parts. The body 5R rotates in the left-right direction to open the lower end. The left and right seedling planting body 5 is configured to vertically move and open and close alternately left and right by the vertical movement mechanism 4 and the opening and closing mechanism 50 and to plant two seedlings in a staggered manner in the field.

  The seedling guide 51 is a cylindrical body that is provided above the seedling planting body 5 and guides the seedling supplied from the seedling feeding device 24 into the seedling planting body 5. The seedling planting body 5 can be accurately supplied. The width L1 of the upper end opening of the seedling guide 51 is wider than twice the pitch P1 of the seedling supply cup 25 of the seedling supply device 24 (that is, the width of the bottom ends of the two seedling supply cups 25 arranged side by side. The width is wider than the interval L2.

  The vertical movement mechanism 4 of the seedling planting body 5 is provided on both right and left sides of the planting transmission case 22. Specifically, the upper and lower lift links 52, 53 are connected to the seedling planting body 5 by attaching the front part to the shaft projecting to the left and right sides of the planting transmission case 22 so that the front part can freely rotate up and down. , A drive shaft 54 that rotates from the side of the planting transmission case 22, a drive arm 55 that is attached so as to rotate integrally with the drive shaft 54, a rotation outer peripheral side end portion of the drive arm 55, and the aforementioned An interlocking arm 56 is rotatably connected to the upper lifting link 52. The rear end portions (rotating tip portions) of the upper and lower elevating links 52 and 53 are pivotally attached to and connected to the connecting member 57. The seedling planting body 5 is attached to the connecting member 57.

  Therefore, when the drive arm 55 is driven and rotated by the rotation of the drive shaft 54, the elevating links 52 and 53 move up and down, and the right and left seedling planting body 5 moves up and down. The lower end portion of the seedling planting body 5 is positioned above the field scene at the ascending position of the vertical movement, and the lower end portion of the seedling planting body 5 is positioned below the field scene at the descending position.

  Further, the rotation fulcrum shaft 58 of the upper elevating link 52 is provided at a position that is eccentric from the center axis of the output shaft 59 at the tip of the planting output shaft 59 that projects from the planting transmission case 22 and rotates. The rotation of the planting output shaft 59 moves around the axis of the planting output shaft 59 while rotating with an eccentric amount (the distance between the pivot fulcrum shaft 58 and the axis of the planting output shaft 59) as a radius. When the upper fulcrum shaft 58 moves up and down during the up-and-down movement of the upper elevating link 52, the seedling planting body 5 is tilted back and forth during the up-and-down movement, and the seedling planting body 5 is looped in a side view. It is configured to move up and down along the operating locus.

  Next, the opening / closing mechanism 50 of the seedling planting body 5 will be described. The end of the inner wire 61a of the opening / closing cable 61 is connected to the tip of the left opening / closing arm 60 provided on the left seedling planting body 5L, and the right opening / closing arm is provided on the right seedling planting body 5R. An end of the outer cable 61b of the opening / closing cable 61 is connected to the distal end of 62, and an operating arm 64 rotatably attached to a rotation fulcrum shaft 63 pivotally attached to the base of the lower lift link 53 is provided. The other end of the inner wire 61a of the opening / closing cable 61 is connected to the distal end of the operating arm 64, and the other end of the outer cable 61b of the opening / closing cable 61 is fixedly attached to the machine body side. FIG. 5 shows the left seedling planting device 23, and the right seedling planting device 23 is symmetrical with the left seedling planting device 23, so that the front end portion of the left opening / closing arm portion is shown. The end portion of the outer cable of the opening / closing cable is connected to the end portion, and the end portion of the inner wire of the opening / closing cable is connected to the tip portion of the right opening / closing arm portion. Then, the operating arm 64 is set under the action of a cam attached so as to rotate integrally with the planting output shaft 50 that rotates and moves the rotation fulcrum shaft 58 pivotally attached to the base of the upper lifting link 52. It is set as the structure rotated to the front side at timing. As a result, when the seedling planting body 5 moves up and down by the drive rotation of the drive shaft 54 and reaches the lowered lower end position, the operating arm 64 is rotated forward by the change of the operating position of the cam, and the outer cable of the opening / closing cable 61 The inner wire 61a is pulled to the right with respect to 61b and the left opening / closing arm 60 and the right opening / closing arm 62 rotate so as to approach each other, and the right seedling planting body 5R rotates to the right. The left seedling planting body 5L is rotated to the left in conjunction with the above, and the lower side of the seedling planting body 5 opens to the left and right, and opens downward. Then, the seedling planting body 5 rises and the operating arm 64 rotates to the original position (rear side) with respect to the seedling planting body 5 due to the change of the cam action position, so that the inner wire 61a of the opening / closing cable 61 is loosened. The lower part of the seedling planting body 5 opened to the left and right is closed. Thus, since the seedling planting body 5 is configured to be opened and closed by the opening / closing cable 61, the opening / closing cable 61 has a higher degree of freedom of connection than the conventional opening / closing mechanism using a rod or link, and therefore operates forward and backward. The actuating arm 64 can rotate the left seedling planting body 5L and the right seedling planting body 5R in different directions (left and right directions), and a desired opening / closing amount of the seedling planting body 5 with a small amount of actuation of the actuation arm 64 Can be obtained. Note that the left seedling planting body 5 </ b> L and the right seedling planting body 5 </ b> R are urged to rotate by the spring 65 toward the side where the lower portion of the seedling planting body 5 is closed.

  Respective rotation front end portions (rear end portions) of the upper and lower lift links 52 and 53 of the vertical movement mechanism 4 are connected to a connection member 57 via upper and lower connection shafts 66 and 67, respectively. The connecting member 57 is provided with a triangular plate 68 on the left and right sides, and the left and right plates 68 sandwich the tip portions of the upper and lower elevating links 52 and 53, and the rear portion spans the left and right plates 68. A left and right boss 69 is provided. In addition, the connecting shafts 66 and 67 and the boss 69 are arranged in the vicinity of each triangular apex of the plate 68 in a side view, and the boss 69 is arranged on the rear side of the upper and lower connecting shafts 66 and 67. The upper and lower connecting shafts 66 and 67 and the upper and lower elevating links 52 and 53 do not get in the way when a position adjusting shaft 70 described later is slid with respect to the boss 69. The left and right plates 68 have a substantially equilateral triangular shape, and the upper and lower connecting shafts 66 and 67 are turned upside down so that the connecting member 57 can be attached. The boss hole of the boss 69 has a hexagonal shape (polygonal shape). On the other hand, a hexagonal (polygonal) position adjusting shaft 70 extending in the left-right direction is fixedly provided at the base of the seedling planting body 5. Accordingly, the position adjusting shaft 70 is inserted into the boss 69, the seedling planting body 5 is supported by the connecting member 57, and the position adjusting shaft 70 is slid with respect to the boss 69 and moved in the left-right direction. The left and right positions of the body 5 can be changed. The boss 69, the position adjusting shaft 70, the set bolt 71 and the like constitute a planting position changing mechanism A.

  The change in the left and right position of the seedling planting body 5 is equivalent to the arrangement pitch in the seedling supply cup 25 so that the seedling planting body 5 is positioned below the drop supply positions 39 and 40 in accordance with the change of the drop supply positions 39 and 40. The length of the position adjusting shaft 70 is set so that the distance can be changed. That is, the interval between the left and right seedling planting bodies 5 can be changed by an integral multiple (1 time) of the arrangement pitch in the first and second seedling supply cups 25b and 25c, and the boss 69 and the position adjusting shaft 70 can be used. A planting position changing mechanism that can move the seedling planting body 5 is configured. The position adjusting shaft 70 can be fixed so as not to move left and right with respect to the boss 69 by a set bolt 71 provided on the boss 69. When the position adjusting shaft 70 is moved left and right, the set bolt 71 is loosened and moved. Yes. The set bolt 71 is provided on the rear side of the boss 69 and the position adjusting shaft 70, and can be easily tightened or loosened from the rear side without the lifting links 52 and 53 being in the way. In addition, the opposing vertex of the hexagonal shape (polygonal shape) of the cross section of the position adjusting shaft 70 is positioned vertically, and the section coefficient for bending in the vertical direction is improved. The strength required to support the cantilever 5 can be obtained. Further, five grooves 72 serving as a guide for the left and right positions of the seedling planting body 5 are provided on the outer periphery of the position adjusting shaft 70 at an appropriate position, and by aligning the grooves 72 with the ends of the bosses 69, a gap of 300 mm and 350 mm are provided. It can be adjusted to the left and right positions of the seedling planting body 5 between the streak, 400 mm streak, 450 mm streak, and 300 mm streak, and the position of the seedling planting body 5 can be easily changed. In addition, the left-right position of the seedling planting body 5 is not limited to the above five locations, and the left-right position of the seedling planting body 5 is fixed to the position adjusting shaft 70 at an arbitrary position, and the streak adjustment is performed steplessly from 300 mm to 300 mm Can be performed.

  In addition, a seedling table 90 is provided at a position above the center where the seedling supply cup 25 of the seedling supply device 24 moves around. The seedling stand 90 is formed in an oval tray shape in a plan view, and is configured to store seedlings supplied to the seedling supply cup 25 in the internal space. Then, two cell bodies 91a that are inclined so that the seat 79 side is lowered and are oriented in the longitudinal direction of the machine body are detachably fixed to the upper part of the seedling table 90 to constitute a cell tray mounting part 91. Yes.

  To describe the configuration of the cell tray mounting portion 91 in detail, the front wall 90a of the seedling table 90 is provided with two through holes 90b side by side, and the rear wall 90c is provided with two cutout grooves 90d from the upper end. The front end of the casing 91a is inserted into the through hole 90b of the front wall 90a, the middle part of the casing 91a is fitted into the notch groove 90d of the rear wall 90c, and the mounting plate 91b welded and fixed to the middle part of the casing 91a is bolt 91c. Is fixed to the rear wall 90c. Therefore, if the bolt 91c is removed, the two casings 91a (that is, the cell tray mounting portion 91) can be removed from the seedling table 90.

  That is, when transplanting a naked seedling (hereinafter referred to as a naked seedling) that is sold in a container such as cardboard, the cell tray mounting portion 91 is removed from the seedling mounting base 90, and the naked seedling is seeded. Are stored in the internal space of the seedling table 90, and an operator sitting on the seat 79 sequentially takes out the naked seedlings stored in the internal space of the seedling table 90 and supplies them to the seedling supply cups 25 for transplantation. Do the work.

  On the other hand, when transplanting seedlings grown in the cell tray T and transplanted into the cell tray T, the cell tray mounting portion 91 is attached to the seedling mounting stand 90 and formed between the pot portions P of the cell tray T containing seedlings. When the cell tray T is placed on the seedling stand 90 in a state where the bottom-side recessed portion thus fitted fits into the two casings 91a of the cell tray placement portion 91, the upper surface containing the seed of the cell tray T is placed on the seat 79. It is placed in a stable state facing the worker who is seated. Therefore, the operator sitting on the seat 79 can easily take out the seedling from the cell tray T and supply it to each seedling supply cup 25 to perform the transplanting operation efficiently and easily.

  In addition, the frame portion of the seedling supply device 24 is connected to the body frame 20 by the reinforcing frame 92 so that the support of the seedling supply device 24 is appropriate, and the seedling supply to each seedling planting body 5 of the seedling supply device 24 is accurately performed. It is configured so that it can be done.

  In addition, a mirror 93c that can be pivotally adjusted (the field of view can be adjusted) is attached to a lever positioning guide 93b of a planting depth adjusting lever 93a provided at a position in front of the right end of the seedling supply device 24, so that the moving direction of the machine body is adjusted. An operator who is seated on the seat 79 facing backwards and performing the transplanting operation can see the front in the traveling direction with the mirror 93c, and recognizes that the aircraft is near the end of the heel and the state of the traveling direction. It is possible and can be done safely. The planting depth adjustment lever 93a changes the vertical position of the heel height detection sensor S corresponding to the neutral position of the lift control valve B1 during the linkage mechanism of the heel height detection sensor S and the lift control valve B1. And adjusting the vertical position of the heel height detection sensor S corresponding to the neutral position of the lift control valve B1 by operating the adjustment part with the planting depth adjustment lever 93a, and the planting depth Can be adjusted.

  Then, while the vertical movement of the seedling planting body 5 is performed for one cycle by the vertical movement mechanism 4, the first and second seedling supply cups 25 b and 25 c are arranged for each arrangement pitch (2 of the seedling supply cup 25 in a row). Pieces: Since the pitch P1, which is the distance between the centers of the adjacent cups 25, is 80 mm, it moves around 160 mm). And, for example, when set between the 300 mm strips shown in FIGS. 5 and 6, the seedling planting body 5 has the timing of opening the bottom lid 25 a of the seedling supply cup 25 at the drop supply positions 39 and 40. It is set to be when it rises to the very bottom. At this time, the first moving support 42e for determining the left drop supply position 39 is set at a position marked with an interval of 300 mm, and the second moving support 42f for determining the right drop supply position 40 is also set between the stripes. Set to the position marked 300mm. Thereby, the seedling supply cup 25 can supply the seedlings simultaneously without passing the seedling supply leakage to the two seedling planting bodies 5 while passing through the upper part of the two seedling planting bodies 5 in series. It will be possible to supply seedlings to the two seedling planting bodies 5 without leaving a seedling supply cup 25 that has not been supplied with seedlings after passing over the planting body 5, and the seedling supply operation can be performed with a margin, In addition, seedlings can be reliably supplied to the two seedling planting bodies 5. At this time, the bottom cover 25a of the seedling supply cup 25 with respect to the left seedling planting body 5 opens at the center position of the width L1 of the upper end opening of the seedling guide 51 of the seedling planting body 5, and proper seedling supply and planting can be performed. . The bottom lid 25a of the seedling supply cup 25 with respect to the right seedling planting body 5 opens at a position slightly before the center position of the width L1 of the upper end opening of the seedling guide 51 of the seedling planting body 5, but the upper end opening of the seedling guide 51 The width L1 of the portion is wider than twice the pitch P1 of the seedling supply cup 25 of the seedling supply device 24 (that is, wider than the distance L2 between the two ends of the two seedling supply cups 25 arranged side by side). Since it is configured, it is possible to supply and plant appropriate seedlings.

  Next, when the 350 mm strip shown in FIG. 7 and FIG. 8 is set, the seedling planting body 5 is directly below the seedling supply cup 25 when the bottom lid 25a of the seedling supply cup 25 opens at the drop supply positions 39 and 40. It is set to be when it rises to the maximum. At this time, the first moving support 42e for determining the left drop supply position 39 is set at a position marked as 350 mm between the stripes, and the second moving support 42f for determining the right drop supply position 40 is also set between the stripes. Set to the position marked as 350 mm. Thereby, the seedling supply cup 25 can supply the seedlings simultaneously without passing the seedling supply leakage to the two seedling planting bodies 5 while passing through the upper part of the two seedling planting bodies 5 in series. It will be possible to supply seedlings to the two seedling planting bodies 5 without leaving a seedling supply cup 25 that has not been supplied with seedlings after passing over the planting body 5, and the seedling supply operation can be performed with a margin, In addition, seedlings can be reliably supplied to the two seedling planting bodies 5. At this time, the bottom cover 25a of the seedling supply cup 25 with respect to the left seedling planting body 5 opens at a position slightly past the center position of the width L1 of the upper end opening of the seedling guide 51 of the seedling planting body 5, The width L1 of the upper end opening is wider than twice the pitch P1 of the seedling supply cup 25 of the seedling supply device 24 (that is, wider than the interval L2 between the bottom ends of the two seedling supply cups 25 arranged side by side) ), So that appropriate seedlings can be supplied and planted. The bottom lid 25a of the seedling supply cup 25 with respect to the right seedling planting body 5 opens at a position slightly before the center position of the width L1 of the upper end opening of the seedling guide 51 of the seedling planting body 5, but the upper end opening of the seedling guide 51 The width L1 of the portion is wider than twice the pitch P1 of the seedling supply cup 25 of the seedling supply device 24 (that is, wider than the distance L2 between the two ends of the two seedling supply cups 25 arranged side by side). Since it is configured, it is possible to supply and plant appropriate seedlings.

  Next, when the interval between 400 mm shown in FIG. 9 and FIG. 10 is set, the seedling planting body 5 is directly below the seedling supply cup 25 when the bottom lid 25a of the seedling supply cup 25 opens at the drop supply positions 39 and 40. It is set to be when it rises to the maximum. At this time, the first moving support 42e for determining the left drop supply position 39 is set at a position marked as 400 mm between the stripes, and the second moving support 42f for determining the right drop supply position 40 is also set between the stripes. Set to the position marked 400mm. Thereby, the seedling supply cup 25 can supply the seedlings simultaneously without passing the seedling supply leakage to the two seedling planting bodies 5 while passing through the upper part of the two seedling planting bodies 5 in series. It will be possible to supply seedlings to the two seedling planting bodies 5 without leaving a seedling supply cup 25 that has not been supplied with seedlings after passing over the planting body 5, and the seedling supply operation can be performed with a margin, In addition, seedlings can be reliably supplied to the two seedling planting bodies 5. At this time, the bottom cover 25a of the seedling supply cup 25 with respect to the left seedling planting body 5 opens at a position slightly before the center position of the width L1 of the upper end opening of the seedling guide 51 of the seedling planting body 5, but the seedling guide 51 The width L1 of the upper end opening of the seedling is wider than twice the pitch P1 of the seedling supply cup 25 of the seedling supply device 24 (that is, wider than the distance L2 between both ends of the bottoms of the two seedling supply cups 25 arranged side by side) Width), it is possible to supply and plant proper seedlings. The bottom lid 25a of the seedling supply cup 25 with respect to the right seedling planting body 5 opens at the center position of the width L1 of the upper end opening of the seedling guide 51 of the seedling planting body 5, and proper seedling supply and planting can be performed.

  Next, when set between 450 mm strips shown in FIG. 11 and FIG. 12, the seedling planting body 5 is directly below the seedling supply cup 25 when the bottom lid 25 a of the seedling supply cup 25 opens at the drop supply positions 39 and 40. It is set to be when it rises to the maximum. At this time, the first moving support 42e for determining the left drop supply position 39 is set at a position marked with an interval of 450 mm, and the second moving support 42f for determining the right drop supply position 40 is also an interval between the stripes. Set to the position marked 450mm. Thereby, the seedling supply cup 25 can supply the seedlings simultaneously without passing the seedling supply leakage to the two seedling planting bodies 5 while passing through the upper part of the two seedling planting bodies 5 in series. It will be possible to supply seedlings to the two seedling planting bodies 5 without leaving a seedling supply cup 25 that has not been supplied with seedlings after passing over the planting body 5, and the seedling supply operation can be performed with a margin, In addition, seedlings can be reliably supplied to the two seedling planting bodies 5. At this time, the bottom cover 25a of the seedling supply cup 25 with respect to the left seedling planting body 5 opens at the center position of the width L1 of the upper end opening of the seedling guide 51 of the seedling planting body 5, and proper seedling supply and planting can be performed. . The bottom lid 25a of the seedling supply cup 25 with respect to the right seedling planting body 5 opens at a position slightly before the center position of the width L1 of the upper end opening of the seedling guide 51 of the seedling planting body 5, but the upper end opening of the seedling guide 51 The width L1 of the portion is wider than twice the pitch P1 of the seedling supply cup 25 of the seedling supply device 24 (that is, wider than the distance L2 between the two ends of the two seedling supply cups 25 arranged side by side). Since it is configured, it is possible to supply and plant appropriate seedlings.

  Next, when the 500 mm strip shown in FIG. 13 and FIG. 14 is set, the seedling planting body 5 is immediately below the seedling supply cup 25 when the bottom lid 25a of the seedling supply cup 25 opens at the drop supply positions 39 and 40. It is set to be when it rises to the maximum. At this time, the first moving support 42e for determining the left drop supply position 39 is set at a position marked as 500 mm between the stripes, and the second moving support 42f for determining the right drop supply position 40 is also set between the stripes. Set to the position marked 500mm. Thereby, the seedling supply cup 25 can supply the seedlings simultaneously without passing the seedling supply leakage to the two seedling planting bodies 5 while passing through the upper part of the two seedling planting bodies 5 in series. It will be possible to supply seedlings to the two seedling planting bodies 5 without leaving a seedling supply cup 25 that has not been supplied with seedlings after passing over the planting body 5, and the seedling supply operation can be performed with a margin, In addition, seedlings can be reliably supplied to the two seedling planting bodies 5. At this time, the bottom cover 25a of the seedling supply cup 25 with respect to the left seedling planting body 5 opens at a position slightly past the center position of the width L1 of the upper end opening of the seedling guide 51 of the seedling planting body 5, The width L1 of the upper end opening is wider than twice the pitch P1 of the seedling supply cup 25 of the seedling supply device 24 (that is, wider than the interval L2 between the bottom ends of the two seedling supply cups 25 arranged side by side) ), So that appropriate seedlings can be supplied and planted. The bottom lid 25a of the seedling supply cup 25 with respect to the right seedling planting body 5 opens at a position slightly before the center position of the width L1 of the upper end opening of the seedling guide 51 of the seedling planting body 5, but the upper end opening of the seedling guide 51 The width L1 of the portion is wider than twice the pitch P1 of the seedling supply cup 25 of the seedling supply device 24 (that is, wider than the distance L2 between the two ends of the two seedling supply cups 25 arranged side by side). Since it is configured, it is possible to supply and plant appropriate seedlings.

  Even when the spacing between the planting lines is changed in this way, the width L1 of the upper end opening of the seedling guide 51 is wider than twice the pitch P1 of the seedling supply cup 25 of the seedling supply device 24 (that is, two arranged side by side). The width of the seedling supply cup 25 is wider than the distance L2 between both ends of the seedling supply cup 25), so that the seedling supply device 25 can properly supply seedlings from the seedling supply cup 25 to the seedling planting body 5, The planting accuracy can be maintained. Further, the spacing between the planting strips can be easily changed by moving the seedling planting body 5 in the left-right direction and changing the drop supply positions 39 and 40. In particular, even if the spacing between the planting lines is changed, the left and right drop supply positions 39 and 40 can be changed with a simple configuration of changing the positions of the first moving support 42e and the second moving support 42f. The rotation position (phase) of the seedling container 25 can be changed by changing the rotation phase of the winding sprocket 29 relative to the driven sprocket 35 without changing the winding of the chain 34 and the seedling supply cup 25. It becomes easy to change between strips. In addition, the position change of the seedling planting body 5 and the pressure-reducing wheel 73 can be easily performed by merely sliding the position adjusting shaft 70 and the arm boss 75a of the pressure-reducing arm 75b.

  Moreover, as shown in the drawing, the left and right pressure reducing wheels 73 for reducing the soil around the seedling while covering the surrounding area of the planted seedling are provided on the right side of the left and right seedling planting body 5 respectively, The roots of the seedlings that have been planted are suppressed from both the left and right sides to promote rooting.

  Here, the support structure of the left and right pressure reducing wheels 73 will be described. A pressure-reducing arm shaft 74c having a regular hexagonal axis configuration along the horizontal direction is provided on a left and right support arm 74b extending from the pressure-reducing frame 74a fixed to the body frame 20 in a lateral direction and extending rearward of the body. . Then, left and right pressure-reducing wheels 73 are provided at the rear part of the left and right pressure-reducing arms 75 so as to be freely rotatable, and front portions of the left and right pressure-reducing arms 75 are respectively configured with U-shaped rotation base end portions 75a. As a configuration in which the pressure suppression arm shaft 74c is passed through a circular through hole 75b provided at the front end portion of the end portion 75a, the left and right arms 75 have a configuration in which the rear portion freely rotates up and down with the pressure suppression arm shaft 74c as a rotation fulcrum. It has become.

  On the other hand, a slide boss 75d penetrating the regular hexagonal hole 75c in the left-right direction is disposed inside the U-shape of the rotation base end 75a in a plan view and is externally fitted to the pressure-reducing arm shaft 74c so as to be able to move only to the left and right. Has been placed. That is, a regular hexagonal hole 75c formed through the slide boss 75d in the left-right direction is externally fitted to a regular hexagonal pressure-reducing arm shaft 74c, and the pressure-reducing arm shaft 74c is tightened by tightening a set bolt 75e. The movement can be fixed in the axial direction. Accordingly, by tightening the set boss 75e and fixing the slide boss 75d on the inner side of the rotation base end portion 75a of the pressure reducing arm 75 to the pressure reducing arm shaft 74c, the pressure reducing arm 75 moves in the left-right direction. Therefore, the rear left and right pressure reducing wheels 73 are only moved up and down, and the pressure reducing position of the left and right pressure reducing wheels 73 can be moved and adjusted left and right.

  A rear end portion of each pressure suppression arm 75 is formed in a gate-shaped rear frame 75f in a rear view, and the pair of left and right pressure suppression wheels 73 are disposed on both left and right sides of the rear frame 75f, and can be rotated by a support shaft 73a. I support it. The rear frame 75f is configured to be able to move in the forward direction across the upper part of the seedling planted in the ridge U. Further, a plurality of balance weights 75h are fitted and supported by a weight mounting arm 75g provided upward from the rear frame 75f, and the pressure reduction pressure can be adjusted by changing the number of the balance weights 75h.

  Stopper arms 75i are fixed to both the left and right sides of the slide boss 75d. The stopper arms 75i extend below the pivot base end 75a toward the rear of the machine body, and the leading end thereof is the pivot base end 75a. This is configured to restrict the pressure-reducing arm 75 from moving downward more than a predetermined amount in contact with the lower side of the U-shaped rear part. That is, the pressure-reducing arm 75 is rotated upward and downward from the position where the lower side of the rotation base end portion 75a contacts the stopper arm 75i, and the left-right pressure-reducing wheel 73 moves up and down.

  A lifting arm 74d that rotates integrally is provided at the right end portion of the pressure-reducing arm shaft 74c, and a right-turning cylinder portion 16b that is a part of a mechanism for moving the left and right rear wheels 7 up and down (by extending and retracting the rolling cylinder 11). The right arm 16a provided on the non-rotating side) is linked to the forced raising rod 76. The connecting portion between the front end of the forcibly rising rod 76 and the right arm 16a is provided with an interchangeable portion 76a formed of a long hole at the front end of the forcibly rising rod 76, and a pin having a base fixed to the right arm 16a. 76b is engaged, and the forcible raising rod 76 is not pushed and pulled by the vertical movement of the right rear wheel 7 by the vertical movement control at the time of normal seedling transplanting, and the left and right wheels 10 are largely moved downward when the aircraft is turning. Only when the forcible ascending rod 76 is pushed, the lifting arm 74d rotates in the direction of the arrow A, and the pressure-reducing arm shaft 74c rotates in the direction of the arrow A. The stopper arm 75i of the slide boss 75d is also rotated in the direction of the arrow A, and the left and right pressure reducing arms 75 are rotated in the upward movement direction by the stopper arm 75i, so that the left and right pressure reducing wheels 73 are automatically moved upward. It is configured to be accommodated rotated. Accordingly, when the left and right rear wheels 7 are moved downward during the turning operation of the aircraft at the end position of the heel U or when the aircraft is moved, the left and right pressure reducing wheels 73 are automatically housed and rotated upward. Can be turned and moved easily and workability is good.

  In addition, the mechanism for retracting and rotating the left and right pressure reducing wheels 73 is linked to the rear wheel 7 on the side that does not move up and down by the expansion and contraction operation of the rolling cylinder 11, so that it is appropriately affected by the expansion and contraction operation of the rolling cylinder 11. The left and right pressing wheels 73 can be stored upward.

  On the other hand, a stand support arm 74e is extended from the pressure-reducing frame 74a toward the lower side of the machine body to support the parking stand 77a. In the parking stand 77a, the tip of the left and right support rod 77d is fixed by welding to the grounding rod 77c provided at the tip, and a long hole 77e provided in the base of the left and right support rod 77d is provided between the left and right stand support portions 77b. The parking stand 77a is provided so as to be rotatable around the rotation shaft 77f. A parking engagement notch groove 77g is provided at a lower position of the left and right stand support portions 77b and a storage engagement notch groove 77h is provided at a rear position, and the front end side of the elongated hole 77e provided above the parking stand 77a An engagement shaft 77i that engages with the parking engagement notch groove 77g and the storage engagement notch groove 77h is provided, and a tension spring is provided between the spring receiving shaft 77j and the engagement shaft 77i provided above the rotation shaft 77f. 77k is provided so that the engagement shaft 77i can be kept engaged with the parking engagement notch groove 77g and the storage engagement notch groove 77h by the tensile force of the tension spring 77k.

  In a state where the engagement shaft 77i is engaged with the parking engagement notch groove 77g, the tip of the parking stand 77a faces downward, and the grounding rod 77c contacts the ground to support the aircraft. Yes. In this parking state, the tread adjustment of the left and right rear wheels 7 can be easily performed by operating the planting operation lever 88 to operate the lifting hydraulic cylinder 14 to raise the left and right rear wheels 7 to a position where they are not grounded. . Also, when the aircraft is placed on a truck bed or the like and moved, if the parking stand 77a is parked, even if the hydraulic pressure of the lifting hydraulic cylinder 14 is released and the left and right rear wheels 7 are moved, it is stable. The aircraft can be supported by the parking stand 77a.

  Next, until the engagement shaft 77i is disengaged from the engagement notch groove 77g for parking, the tension spring 77k is pulled by holding the parking stand 77a against the pulling force of the pulling spring 77k, and rotated upward and released. With the pulling force of 77k, the engaging shaft 77i engages with the storing engagement notch groove 77h, and the parking stand 77a is stored in the stored state above the fuselage. In this stored state, since the parking stand 77a is stored above the machine body, a favorable transplanting operation can be performed without interfering with the transplanting operation.

In this way, switching between the parking state and the storage state of the parking stand 77a can be easily performed with one touch, and the workability is good.
The left and right pressure-reducing arms 75 each provided with left and right pressure-reducing wheels 73 at the rear are provided with rod-shaped left and right indicators 78 that extend upward. Here, the configuration and operation of the left / right indicator 78 will be described. The base of the indicator 78 is supported by a pivot pin 78b in the left-right direction of the body on a U-shaped support 78a welded and fixed on the rear part of the pressure-reducing arm 75 slightly ahead of the ground contact position of the left-right pressure wheel 73 in a side view of the body. It is pivotally supported so as to be pivotable in the front-rear direction. The upper part of the left / right indicator 78 is provided in a state of extending upward through the left / right guide hole 78d of the indicator guide 78c attached to the body frame 20 at the left / right center part. The left and right guide holes 78d are elongated holes extending in the left-right direction of the machine body. As described above, the left and right pressure-reducing arms 75 are adjusted in the left-right position to change the left-right position of the left and right pressure-reducing wheels 73 to adjust the striations. In this case, the left / right indicator 78 is also configured to change its position in the left / right direction of the fuselage in accordance with the adjustment of the interval. Further, a conspicuous color marker 78e serving as an index is attached to the upper end of the left and right indicator 78.

  Therefore, when the pressure-reducing wheel 73 moves up and down following the heel U surface during the transplanting operation, the left and right pressure-reducing arms 75 provided with the pressure-reducing wheels 73 that repress the left and right planting positions respectively move up and down. The markers 78e of the left and right indicators 78 also move up and down in conjunction with the up and down movement of 75. In other words, when the right side of the upper surface of the heel U is high and the left side is inclined low when facing the advancing direction of the aircraft, the marker 78e of the right indicator 78 is higher than the marker 78e of the left indicator 78. The person can immediately recognize that the right side of the upper surface of the bag U is high and the left side is inclined low.

  Therefore, when the operator is seated on the seat 79 and performing the transplanting operation, the operator immediately recognizes the right / left inclination of the heel U by looking at the marker 78e of the left / right indicator 78 and the difference in height of the left / right marker 78e. Therefore, the height of the marker 78e of the left and right indicator 78 is made the same by operating the rolling control valve B2 by operating the manual body tilt adjusting lever 15 in the left and right direction of the body and expanding and contracting the rolling cylinder 11. Tilt the aircraft. Then, since the body is parallel to the inclination of the ridge U, the planting depth of the seedlings by the left and right seedling planting bodies 5 at the left and right planting positions becomes the same, and an appropriate seedling transplanting operation can be performed.

  In addition, since the left and right pressure-reducing arms 75 are biased toward the pressure-reducing wheel 73 on the inner side of the left and right pressure-reducing wheels 73, the distance between the left and right pressure-reducing arms 75 is narrow. Accordingly, the left / right distance of the left / right indicator 78 provided on the left / right pressure suppression arm 75 having a narrow distance in the left / right direction of the airframe is also narrowed, and the left / right marker 78e of the left / right indicator 78 is closer to the left and right. The difference is easy to understand, and the tilting operation of the airframe can be performed accurately and easily, and the workability is good.

  In addition, a rear seat 79 is provided above the bonnet Bo that covers the upper part of the engine 3 and the transmission case 8 so as to face the seedling supply device 24 side, and a flat step 80 for placing a foot between the seedling supply device 24 is provided. ing. The seat 79 is supported by the airframe via a support frame 81 that extends upward through one of the left and right sides (right side) of the bonnet Bo.

  The step 80 includes a main step 82 disposed between the seat 79 and the seedling supply device 24 in plan view of the machine body, and sub-steps 83 provided on both the left and right sides of the seat 79 and the bonnet Bo. The sub-step 83 extends forward and backward from the front end portion of the airframe to near the main step 82, the front portion 83a is configured to be one step lower than the rear portion 83b, and allows an operator to get on and off from the front end portion of the airframe. It is configured. An elevating mechanism (arm 16a, rolling cylinder 11, rod 13, etc.) for raising and lowering the wheel (rear wheel) 7 can be arranged below the rear part 83b which is the upper stage of the sub-step 83, and the space of the machine body is reduced. The aircraft is made compact by making effective use. Further, a transmission case 9 that rotates up and down can be disposed below the rear portion of the sub-step 83 in accordance with the tread change of the wheel (rear wheel) 7. In addition, a rising portion 82a is provided at the front end of the main step 82 so as to be inclined upward and the operator's foot sitting on the seat 79 contacts the vertical movement mechanism 4 of the seedling planting device 23 by the rising portion 82a. Protects against this. Further, by positioning the rising portion 82a below the seedling supply device 24, the longitudinal length of the machine body can be shortened. Moreover, the main step 82 is provided with the rising portion 82a, whereby the strength is improved. The rising portion 82a includes a main clutch lever 84 for driving the left and right rear wheels 7, the seedling planting device 23 and the seedling supply device 24, and a left and right side brake pedal 85 for braking the left and right rear wheels 7. The operator in the seat 79 can stop the aircraft and correct the traveling direction of the aircraft.

  At the front end of the fuselage between the left and right front wheels 6, there is provided a heel end sensor 86 for grounding the top surface of the heel U to detect the end of the heel U, and the heel end sensor 86 is free from wrinkles due to the forward movement of the body. It is configured to detect that the end of the heel has been reached by losing the sense of the upper surface of the heel after reaching. Based on the detection of the heel end by the heel end sensor 86, the main clutch is automatically disengaged to stop the driving of the left and right rear wheels 7, the driving of the seedling planting device 23 and the seedling supplying device 24, and the machine body is stopped. At the same time, an alarm (for example, a buzzer or the like) is issued to notify the worker. As a result, the worker sitting on the seat 79 faces backward with respect to the advancing direction of the aircraft, and since it concentrates on the seedling replenishment work, it is difficult to confirm the front of the aircraft and does not notice that the aircraft has reached the end of the heel. Although there is a risk of causing an accident such as a collision with surrounding structures, the dredge end sensor 86 automatically stops the aircraft at the end of the dredge and notifies the end of the dredge by an alarm. The seedling replenishment work can be concentrated on the seedling supply device 24 without worrying about the situation in front of the machine body and the position of the end of the heel, thereby improving the planting work efficiency. The heel end sensor 86 is disposed at a position on the right side with respect to the center of the left and right sides of the fuselage, and the influence of the vertical motion of the fuselage accompanying the vertical movement of the left rear wheel 7 by the rolling cylinder 11 is small. Thus, the upper surface of the ridge can be detected.

  Also, near the steering handle 2, the main clutch lever 87 for manually turning on and off the left and right rear wheels 7, the seedling planting device 23 and the seedling feeding device 24, the seedling planting device 28 and the seedling feeding device 32 are driven. And a planting operation lever 88 for manually turning on and off only. The planting operation lever 88 can be used to operate the lifting hydraulic cylinder 14 to manually lift and lower the machine body. Then, a sensor (detection means) for detecting the operation position of the planting operation lever 88 is provided, and only when the seedling planting device 23 and the seedling supply device 24 are operated in the drive state by the planting operation lever 88, It is configured such that the automatic stop control and alarm of the airframe are activated by the aforementioned heel end sensor 86. As a result, the automatic stop control and alarm of the aircraft can be activated only during planting work, and the aircraft endless sensor 86 is unnecessarily detected by the heel end sensor 86 not detecting the upper surface of the heel when traveling or turning at the heel end. Can be prevented, and the operability is improved. A seating sensor for detecting that an operator is seated on the seat 79 is provided in place of or in combination with the above-described automatic stop control of the machine and the operation of the alarm by the planting operation lever 88. Only when the person is seated, the automatic stop control and warning of the aircraft may be activated. Moreover, it can be set as the structure which a warning is act | operated first by the detection of the end of the hull by the hail end sensor 56, and the body stops automatically after the predetermined time (several seconds later). The airframe may be automatically stopped by stopping the engine 3.

  Further, when the planting operation lever 88 is operated to raise the machine body and turn on the heel, when the heel end sensor 86 is moved up and stored, the heel end sensor 86 is not in the way of turning. It can be turned easily.

  The heel end sensor 86 has a configuration in which a rotation roller 86b is rotatably provided at the lower end of a rotation arm 86a pivotally supported on the base of the machine body. A lower rotation restricting rod is provided at a position below the rotation arm 86a so that the rod end sensor 86 (rotating roller 86b) does not rotate downward more than necessary. When the planting operation lever 88 is operated to raise the machine body in cooperation with the lever 88, the downward rotation restricting rod is moved upward via the operation wire to contact the lower portion of the rotation arm 86a. Thus, the rotating arm 86a is rotated upward to the storage position.

  Left and right seedling platforms 89 are arranged on the left and right sides of the machine body. The left and right seedling mounting platforms 89 have three upper seedling mounting portions 101a, 101b, and lower seedlings on the inner side of the body above the seedling support frame 100, the base of which is rotatably and fixedly provided on the body. A mounting portion 101c is provided.

First, a configuration in which each of the left and right seedling mounting platforms 89 is provided on the machine body so as to be rotatable and fixed is described.
Since the mounting configuration of the left and right seedling mounting platform 89 with respect to the machine body is bilaterally symmetric, the mounting configuration of the left seedling mounting platform 89 with respect to the aircraft body will be described as a representative. A seedling mounting frame 120 is fixedly welded to the distal end of the left support 20a whose base is fixed to the machine body. The seedling mounting frame 120 includes a cylindrical portion 121 that rotatably supports the lower end portion of the seedling support frame 100, and two first locking holes 122 a and a second locking hole 122 b around the cylindrical portion 121. Is provided. The two first locking holes 122a and the second locking holes 122b are provided at positions 90 degrees apart from the center of the cylindrical portion 121 in plan view.

  On the other hand, the base portion of the vertical fixing pin support plate 123 is welded and fixed to the lower end portion of the seedling support frame 100, and the lock pin 125 is inserted into the through-holes 124 respectively provided in the vertical fixing pin support plate 123 to compress it. The lock 126 is urged by a spring 126 in a direction in which the tip of the lock pin 125 is inserted into the first lock hole 122a and the second lock hole 122b.

  Then, the lock pin 125 is pulled up against the compression spring 126, and each lock hole 122a is inserted from the state where the tip of the lock pin 125 is inserted into the first lock hole 122a or the second lock hole 122b. When the state is pulled out from 122b, the seedling support frame 100 can be rotated around the cylindrical portion 121, and the left seedling mounting platform 89 can be freely rotated. Therefore, when the left seedling mounting base 89 is rotated so that the tip of the lock pin 125 is inserted into the first locking hole 122a, the left seedling mounting base 89 has a transplanting operation state that projects to the left side of the machine body. Become. Further, when the left seedling mounting base 89 is rotated so that the tip of the lock pin 125 is inserted into the second locking hole 122b, the left seedling mounting base 89 is housed inside the body in front of the body. The storage state is reached.

  Accordingly, the respective lock pins 125 of the left and right seedling mounts 89 are lifted upward against the compression spring 126, the left and right seedling mounts 89 are rotated, and the tips of the lock pins 125 are inserted into the first locking holes 122a. When in the retracted state, the left and right seedling mounts 89 are in a transplanting operation state that protrudes from the left and right sides of the seat 79 to the left and right sides of the machine body, and an appropriate transplanting operation with good workability and efficiency can be performed.

  On the other hand, when the left and right seedling mounting platforms 89 are rotated so that the tips of the lock pins 125 are inserted into the second locking holes 122b, the left and right seedling mounting platforms 89 are positioned in front of the airframe ahead of the seats 79. When the vehicle is stored on the inside with the left and right widths narrowed, and the vehicle travels on the road, the aircraft can be easily steered and the operability of the aircraft is good. In addition, when the aircraft is loaded on a loading platform such as a truck or when the aircraft is accommodated in a barn or the like, the lateral width of the aircraft is reduced, so that the aircraft can be accommodated in a narrow space.

  The upper seedling loading portion 101a is rotated on the seedling support frame 100 by the upper pivot shaft 102a so that the seedling placement state is directed from the seedling support frame 100 toward the inside of the machine body and to the outside of the machine body of the seedling support frame 100. The middle-stage seedling mounting portion 101b is configured to be freely switchable to a folded storage state facing downward, and the seedling support portion 100b is a seedling that faces the inward body from the seedling support frame 100 on the middle support shaft 102b. It is configured to be able to rotate and switch between a mounted state and a folded storage state that is rotated upward to a position along the inside of the seedling support frame 100 and directed upward. And the lower stage seed mounting part 101c is fixing the base part to the seedling support frame 100 in the seedling mounting state which faced the inward body direction from the seedling support frame 100.

  In addition, each upper seedling mounting section 101a, middle stage seedling mounting section 101b, and lower seedling mounting section 101c can stably mount a cell tray T having a rectangular shape in plan view in which pot portions P are arranged in a vertical and horizontal manner and are integrally formed. 103 are provided. Each of the seedling platforms 103 is formed of a synthetic resin such as plastic on which the cell tray T is mounted, and has a rectangular mounting surface 103b having a plurality of through holes 103a in plan view, and a front and back of the mounting surface 103b. The front and rear walls 103c that are integrally formed upright, the left and right walls 103d that are integrally formed upright to the left and right of the placement surface 103b, and the cell tray T that is placed on the seedling stage 103 are placed in front of the aircraft. A tray that prevents the aircraft from falling forward when it is tilted (when the aircraft is raised by operating the lifting hydraulic cylinder 14 to lower the left and right rear wheels 7 to raise the aircraft) It is comprised by the fall prevention body 103e.

  And the tray fall prevention body 103e is comprised with the housing, and it inserted the lower end part into the upper surface of the front wall 103c (position biased outward from the left-right center of the seedling stand 103 in the body front view). In a state, it is fixed to the front wall 103c.

  In particular, the upper seedling mounting portion 101a is rotated to the outside of the body of the seedling support frame 100 to be in a folded storage state facing downward, and the middle seedling mounting portion 101b is moved to a position along the inside of the seedling support frame 100. If the folding storage state is turned and turned upward, the upper part of the lower seedling mounting part 101c fixed to the seedling support frame 100 becomes an open space, so that the seedlings are put on the seedling mounting base 103. A container such as a large cardboard can be placed, and the work of transplanting a bare seedling that is sold in a container such as a cardboard can be easily and efficiently performed.

Here, the operation in the case where the cell tray T on which the seedling has grown is placed on the left and right seedling mounting stand 89 and the transplanting operation is performed will be described.
The seedling support frame 100 is rotated so that the left and right seedling mounting platforms 89 are positioned on the left and right sides of the seat 79, and the upper seedling mounting unit 101a, the middle seedling mounting unit 101b, and the lower seedling mounting unit 101c are located in the body. A seedling placement state facing the work seat 79 is assumed. Next, the cell tray T on which the seedling has grown is placed on each of the upper seedling placing section 101a, the middle seedling placing section 101b, and the lower seedling placing section 101c. Then, the entire bottom surface portion of the cell tray T is stably received by the mounting surface 103b having a rectangular shape in plan view, and the cell tray T is in a stable state with each of the upper seedling mounting portions 101a, the middle seedling mounting portions 101b, and the lower seedling mounting portions 101c. Placed on.

  In addition, the cell tray T on which the seedling has grown is placed on the cell tray placement portion 91 of the seedling stand 90, and the operator sits on the seat 79, drives each part to advance the machine body, A seedling is taken out from the cell tray T placed on the cell tray placing portion 91 and supplied to each seedling supply cup 25 to perform a transplanting operation. At this time, the upper surface containing the seed of the cell tray T placed on the seedling table 90 is placed in a stable state facing the worker seated on the seat 79, and therefore the seat 79. The operator who is seated on can easily take out the seedling from the cell tray T and supply it to each seedling supply cup 25 to perform the transplanting operation efficiently and easily.

  Next, if there are no seeds in the cell tray T placed on the cell tray placement part 91 of the seedling placing stand 90, the cell tray T containing the seedling is taken out from any one of the upper seedling placing parts 101a of the left and right seedling placing stands 89, The cells are placed on the empty cell tray T on the cell tray mounting portion 91 of the seedling table 90, and the transplanting operation is continued. When the cell tray T placed on the upper seedling mounting portion 101a on the left and right seedling mounting platforms 89 has been used on both the left and right sides, the upper seedling mounting portion 101a is rotated from the seedling mounting state to the outside of the body of the seedling support frame 100. When switched to the folded storage state facing downward, the upper part of the middle seedling placing part 101b becomes an open space, so that the cell tray T containing the seedlings can be easily taken out from the middle seedling placing part 101b, The transplantation operation can be continued by placing the empty cell tray T on the cell tray mounting portion 91 of the table 90 in an overlapping manner from above. When the cell tray T placed on the middle seedling placing portion 101b of the left and right seedling placing stands 89 is also used, the middle stage seedling placing portion 101b is rotated from the seedling placing state to a position along the inside of the seedling support frame 100. When it is switched to the folded storage state facing upward, the upper part of the lower seedling mounting part 101c becomes an open space, so that the cell tray T containing the seedlings can be easily taken out from the lower seedling mounting part 101c, The transplantation operation can be continued by placing the empty cell tray T on the cell tray mounting portion 91 of the table 90 in an overlapping manner from above.

  In this way, the cell tray T on which the seedlings have grown can be placed on the left and right seedling placing platforms 89 and the cell tray placing portion 91, and the transplanting operation can be performed efficiently and efficiently. Further, the upper seedling mounting portion 101a, the middle seedling mounting portion 101b, and the lower seedling mounting portion 101c are configured by a box at a position biased outward from the center of the left and right of the seedling mounting base 103 in front view of the front wall 103c of the body. Since the tray fall prevention body 103e is provided, when the left and right rear wheels 7 are lowered to raise the airframe in order to turn the airframe at the end of the heel U, the airframe assumes a forward leaning posture. It is possible to prevent the placed cell tray T from falling to the front of the machine body with the tray drop prevention body 103e having a simple configuration constituted by a casing, and can perform a favorable turning operation and perform a transplanting operation with good workability.

Next, a description will be given of an operation in a case where a container such as a cardboard containing naked seedlings is placed on the left and right seedling mounting base 89 to perform a transplanting operation.
First, the upper seedling mounting portion 101a is rotated to the outside of the body of the seedling support frame 100 so as to be folded and stored downward, and the middle seedling mounting portion 101b is rotated to a position along the inside of the seedling support frame 100. Thus, the folded storage state is set so that the upper portion of the lower seedling mounting portion 101c fixed to the seedling support frame 100 is an open space. Then, a container such as a large cardboard in which a bare seedling is placed is placed on the seedling stage 103 of the lower seedling stage 101c. Then, naked seedlings are also placed in the internal space of the seedling table 90, and the operator sits on the seat 79, drives each part to advance the machine body, sequentially removes the naked seedlings from the seedling table 90, and each seedling. It is supplied to the supply cup 25 and transplanted. At this time, since the seedling table 90 is provided at an upper position in the center where the seedling supply cup 25 of the seedling supply device 24 moves around, the worker sitting on the seat 79 can easily bare the seedling table 90 from the seedling table 90. The seedlings can be taken out and supplied to each seedling supply cup 25 to perform the transplanting operation efficiently and easily.

  At this time, since a container such as a large cardboard containing naked seedlings is placed on the lower seedling mounting portion 101c fixed to the seedling support frame 100, the container such as a large cardboard containing naked seedlings is stable. It can be placed in a state, and a good seedling removal operation can be performed, resulting in high work efficiency.

Next, when there are no bare seedlings in the seedling stand 90, the bare seedlings are taken out from the cardboard container placed on the right and left seedling stand 89 and transferred to the seedling stand 90, and the transplanting operation is continued. To do.
In addition, since the upper stage seed placement part 101a is rotated from the seedling placement state to the outside of the body of the seedling support frame 100 and switched to the folded storage state facing downward, the upper stage seed placement part 101a is supported in the folded storage state. Since it does not protrude upward from the frame 100, it is possible to avoid a situation in which the machine body height is increased and the upper seedling mounting portion 101a is in contact with another object and is damaged.

  Next, when the machine body is loaded on a truck or stored in a warehouse, the seedling support frame 100 is released, the seedling support frame 100 is rotated, and the left and right seedling support platforms 89 are 90 degrees. When the seedling stand support frame 100 is fixed again in a state where it rotates and comes to the front position of the machine body, the left and right seedling support platforms 89 are configured to be substantially within the lateral width of the machine body. In this way, the body width can be reduced with a simple configuration, loading into a truck and storage in a warehouse are easy, and workability is good.

Next, another example of the left and right seedling mounts 89 different from the above embodiment will be described with reference to FIG.
FIG. 26 is a rear view of the left seedling stage 89, and the right seedling stage 89 has the same configuration as the left seedling stage 89 in the left-right symmetry. explain.

  In this embodiment, a base frame 100a in which the seedling support frame 100 is rotatably and fixedly mounted on the body, and an extendable telescopic frame that supports the upper seedling mounting portion 101a, the middle seedling mounting portion 101b, and the lower seedling mounting portion 101c. The telescopic frame 100b is fixed to the upper part of the base frame 100a.

  The telescopic frame 100b supports the lower seedling mounting portion 101c and rotates the lower frame 110 made of a pipe material fixed to the upper portion of the base frame 100a and the middle seedling mounting portion 101b with the middle pivot shaft 102b. A middle frame 111 that is freely supported and disposed above the lower frame 110, and an upper frame 112 that is rotatably supported by the upper pivot shaft 102a and supports the upper seedling mounting portion 101a on the upper frame 112a. It is configured.

  The middle frame 111 is configured by welding and fixing the upper part of the middle stage insertion support rod 111b fitted into the lower frame 110 to the lower part of the middle stage upper pipe part 111a made of pipe material. Three middle lower through-holes 111c are provided in the collar 111b. On the other hand, a lower through hole 110a having the same diameter as the middle lower through hole 111c of the middle insertion support rod 111b is provided at the upper end of the lower frame 110, and the lower insertion hole 111a of the middle insertion support rod 111b is provided in the lower through hole 110a of the lower frame 110. The vertical position of the middle frame 111 relative to the lower frame 110 can be adjusted and fixed by aligning the vertical position of any of the middle lower through-holes 111c and penetrating the locking pin 113a. That is, a configuration in which the vertical height of the middle seedling mounting portion 101b supported by the middle frame 111 can be adjusted to three levels with respect to the lower seedling placing portion 101c supported by the lower frame 110 (ie, the lower seedling placing portion 101c and the middle seedling seedling). The configuration is such that the interval between the mounting portions 101b can be changed.

  The upper frame 112 is configured by welding and fixing the upper portion of the upper insertion support rod 112b that fits inside the middle upper pipe portion 111a of the middle frame 111 at the lower portion of the upper upper pipe portion 112a made of pipe material. The upper insertion support rod 112b is provided with three upper through holes 112c. On the other hand, a middle upper through hole 111a having the same diameter as the upper through hole 112c of the upper insertion support rod 112b is provided at the upper end of the middle upper pipe portion 111a of the middle frame 111, and the middle upper through hole 111a of the middle frame 111 is provided. The upper position of the upper frame 112 with respect to the middle frame 111 is adjustable and fixed by aligning the upper and lower positions of any of the upper through holes 112c of the upper insertion support rod 112b with the locking pin 113b. That is, a configuration in which the vertical height of the upper seedling mounting portion 101a supported by the upper frame 112 can be adjusted to three levels with respect to the middle seedling mounting portion 101b supported by the middle frame 111 (that is, the middle seedling mounting portion 101b and the upper seedling mounting portion). The configuration is such that the interval between the mounting portions 101a can be changed.

  Accordingly, in the transplanting operation, the operator can adjust the intervals among the lower seedling mounting portion 101c, the middle seedling mounting portion 101b, and the upper seedling mounting portion 101a according to the type of seedling to be transplanted, the difference in the height of the seedling, etc. Transplantation can be performed with good quality and properness.

Furthermore, another example of the left and right seedling mounting platform 89 different from the above embodiment will be described with reference to FIG.
FIG. 27 is a perspective view of the left seedling stage 89, and the right seedling stage 89 has the same configuration as the left seedling stage 89 in the left-right symmetry. explain.

  In this embodiment, instead of the tray drop blocker 103e, each tray mount blocker 130 that locks the cell tray T mounted on the seedling mount 103 and prevents it from moving left and right and back and forth is provided. An example in which the base 103 is detachably provided is shown.

  The tray movement blocking body 130 is composed of a lateral movement blocking housing 130a whose front and rear ends are bent downward, and a short longitudinal movement blocking housing 130b which is welded and fixed in a direction perpendicular to the lateral movement blocking housing 130a. The forward / backward movement prevention housing 130b is biased to one side from the front / rear center position of the lateral movement prevention housing 130a (to the rear side of the machine body) and fixedly welded. Further, the tray movement blocking body 130 is mounted at a position biased from the center position to the inward side (seat 79 side) in the left-right direction of each seedling mounting base 103.

  Then, the front and rear ends bent downward of the lateral movement prevention housing 130a are inserted into the holes 103h provided in the front and rear walls 103c, and the pin 103i that can be manually pulled out by the operator is fixed to the end protruding downward. ing. Therefore, if the pin 103i is removed, the tray movement blocking body 130 can be easily removed, and for example, a box such as a cardboard containing seedlings can be placed on the seedling mounting table 103.

  In particular, the upper seedling mounting portion 101a is rotated to the outside of the body of the seedling support frame 100 to be in a folded storage state facing downward, and the middle seedling mounting portion 101b is rotated to a position along the inside of the seedling support frame 100. If the tray storage blocker 130 of the lower seedling mounting portion 101c is removed by folding the storage unit facing upward, the upper portion of the lower seedling mounting portion 101c fixed to the seedling support frame 100 becomes an open space. Therefore, a container such as a large cardboard containing seedlings can be placed on the seedling stage 103, and the operation of transplanting a bare seedling that is sold in a container such as a cardboard can be carried out easily and efficiently. Yes.

Here, the operation in the case where the cell tray T on which the seedling has grown is placed on the left and right seedling mounting stand 89 and the transplanting operation is performed will be described.
The seedling support frame 100 is rotated so that the left and right seedling mounting platforms 89 are positioned on the left and right sides of the seat 79, and the upper seedling mounting unit 101a, the middle seedling mounting unit 101b, and the lower seedling mounting unit 101c are located in the body. A seedling placement state facing the work seat 79 is assumed. Next, in the cell tray T on which the seedling has grown, the bottom side recesses formed in the vertical and horizontal directions between the pot parts P are placed on the horizontal movement blocking body 130a and the forward / backward movement blocking body 130b of the tray movement blocking body 130 from above. In the fitted state, it is placed on each upper seedling placing part 101a, middle seedling placing part 101b, and lower seedling placing part 101c. Then, the entire bottom surface portion of the cell tray T is stably received by the mounting surface 103b having a rectangular shape in plan view, and the bottom surface 130b of the tray movement blocking body 130 is formed vertically between the pot portions P. Since it fits in the side dent, the cell tray T is prevented from laterally moving laterally, and the forward / backward movement blocking body 130b of the tray movement blocker 130 is fitted in the bottom side dent formed between the pot portions P. Therefore, the cell tray T is prevented from moving back and forth, and the cell tray T is stably and accurately placed on each upper seedling placing portion 101a, middle seedling placing portion 101b, and lower seedling placing portion 101c.

  In particular, the tray movement blocking body 130 is a simple structure in which the lateral movement blocking housing 130a and the forward / backward movement blocking housing 130b are configured in a cross shape, so that it is inexpensive and the cell tray T is securely locked and moved. And the situation where the cell tray T placed from the upper seedling placement part 101a, the middle seedling placement part 101b, and the lower seedling placement part 101c falls down can be accurately avoided, and a good transplanting operation can be performed. Further, since the tray movement blocking body 130 is configured in a cross shape by a lateral movement blocking body 130a and a longitudinal movement blocking body 130b, the lateral movement blocking body 130a and the forward / backward movement blocking body 130b of the tray movement blocking body 130 are It fits into the bottom side recesses of various standard cell trays T having different volumes of the pot part P, and securely locks the various standard cell trays T to each upper seedling mounting part 101a, middle stage seedling mounting part 101b and lower seedling mounting. It can be stably placed on the portion 101c.

  Since the tray movement blocking body 130 is mounted at a position biased from the center position to the inward side (seat 79 side) in the left-right direction of the body of each seedling platform 103, each worker sitting on the seat 79 has each When the cell tray T is taken out from the seedling stage 103 of the upper stage seedling part 101a, the middle stage seedling part 101b, and the lower stage seedling part 101c, the cell tray T is lifted from the inside of the seedling stage 103. The cell tray T can be easily taken out from the seedling stage 103, and the workability is good. Furthermore, since the forward / backward movement-preventing casing 130b having a short length is provided so as to be biased to one side (on the rear side of the machine body) from the front / rear central position of the lateral movement-preventing casing 130a, the operator who is seated on the seat 79 can move to each upper stage. When the cell tray T is taken out from the seedling platform 103 of the seedling platform 101a, the middle seedling platform 101b, and the lower seedling platform 101c, the side of the seedling platform 103 on which the lateral movement blocking housing 130a is provided (rear side of the machine body) By lifting the cell tray T from the side), the lateral movement blocking housing 130a is surely separated from the irregularities on the bottom surface of the cell tray T, so that the cell tray T can be taken out from the seedling stage 103 more easily and the workability is good. .

In addition, although the above demonstrated the structure of 2 row planting, you may apply to the structure of 3 or more rows.
Moreover, although the above demonstrated the structure which staggers a plurality of lines, you may apply, for example to the structure which plantes a row of trees, such as the structure which made the operation | movement timing of the right-and-left seedling planting body 5 the same.

  The transplanter of the present invention is not limited to vegetable seedlings but can be used as a transplanter for transplanting other seedlings and bulbs. Moreover, although the riding type transplanter has been described in detail, a walking type transplanter may be used.

DESCRIPTION OF SYMBOLS 4 Vertical movement mechanism 5 Seedling planting body 7 Traveling device 24 Seedling supply device 79 Seat 89 Seedling stand 100 Seedling stand support frame 101a Upper stage seedling mounting part 101b Middle stage seedling mounting part 101c Lower stage seedling mounting part 102a Upper stage pivot shaft 102b Middle stage pivotal support Shaft 103c Wall (front and rear walls)
103e Tray fall prevention body

Claims (5)

  A seedling planting body (5) and a seedling mounting platform (89) for moving seedlings in a field by moving up and down by a seedling supply device (24) for supplying seedlings to a machine body provided with a traveling device (7) and a vertical movement mechanism (4) ) Is provided with a plurality of seedling mounting parts (101a, 101b, 101c) on the seedling mounting base (89), and the seedling mounting part (101c) above the lowest lower seedling mounting part (101c) ( 101a and 101b) are configured to be switchable between a seedling placement state parallel or substantially parallel to the lower seedling placement portion (101c) and a folded storage state in which the upper portion of the lower seedling placement portion (101c) is opened. Machine.   A seedling placement state in which the uppermost seedling mounting portion (101a) on the seedling support frame (100) provided on the machine body is directed from the seedling support frame (100) toward the inside of the machine body at the upper pivot shaft (102a). And the seedling support frame (100) is rotated to the outside of the machine body so that it can be freely switched to the folded storage state facing downward, and the upper seedling mounting portion (101a) and the lowermost lower seedling mounting portion (101c) are provided. In the middle stage seedling mounting portion (101b) between the seedling support frame (100) and the seedling support frame (100b) with the middle stage pivot shaft (102b) from the seedling support frame (100) toward the inside of the body. (100) is rotated to a position along the inner side of (100) so as to be freely switchable to a folded storage state facing upward, and the lower seedling mounting portion (101c) is directed toward the body of the seedling support frame (100). The seedling support frame (with the seedling placed on the base Transplanter according to claim 1, characterized in that fixed to 00).   A tray drop prevention body (103e) protruding upward from the wall (103c) of the seedling placement part (101a, 101b, 101c) on the side inclined downward when the traveling device (7) is moved downward to raise the machine body. The transplanter according to claim 1, wherein the transplanter is provided.   A seat (79) on which an operator sits on the body to perform transplantation work is provided, and the seedling mounting parts (101a, 101b, 101c) of the left and right seedling mounting bases (89) face the seat (79) and the left and right sides of the body 4. The left and right seedling mounts (89) are configured to be switchable between a state of projecting laterally and a state of being housed inside the body in front of the seat (79). The transplanter according to claim 1.   The transplanter according to any one of claims 1 to 4, wherein the vertical spacing of the plurality of seedling placement parts (101a, 101b, 101c) is configured to be adjustable.

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