JP2000152707A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the depressed parts in ridge rows from causing soil collapse by the transplanting cup that vertically moves toward the upper face of the ridge. SOLUTION: The vertically swinging arm 31 having a transplanting cup 32 that holds and transplants a pot seedling to the field ridge on its top edge is guided by the rotary case 40, the crank arm 45 and the vertical guide rail 48 and is vertically swung. The transplanting cup 32 receives the pot seedling N from the seedling feeder via the relaying mechanism at its ascend-stop position to allow the vertically swinging arm 31 to go down and press down the upper soil of the ridge until a depression is formed on the ridge soil. At this time, almost upper half 48a1 of the guide groove of the vertical guide rail 48 is made almost vertical to the ground face and simultaneously the lower half 48a2 is inclined so that it may go backward on the rear side of the running direction of the tractor whereby almost lower half of the motion trace of the transplanting cup 32 is made almost vertical to the upper face of the ridge to inhibit the formed soil depression from collapsing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a seedling transplanter for transplanting seedlings for crops such as tobacco along the ridges of a field.

[0002]

2. Description of the Related Art Conventionally, a seedling transplanter for deeply transplanting seedlings along ridges in a field is disclosed in, for example, Japanese Utility Model Laid-Open No. 7-250513 proposed earlier by the present applicant.
A cup for transplanting the tip of a vertically swinging arm in a seedling planting device provided on the traveling body while traveling so as to straddle the ridge formed in the field on the left and right sides on the left and right sides of the traveling body. There was a configuration in which a recess was made on the upper surface of the ridge and the seedling was transplanted to the bottom.

[0003]

However, FIG.
As shown by the dotted line, the moving trajectory of the transplanting cup (the trajectory of the traveling body) due to the elevation of the vertical swing arm is the lower part thereof (the part pressed downward from the upper surface of the ridge) in the traveling direction of the traveling body. When it is convexly curved toward the front, the traveling speed increases as the traveling body is pushed forward by the recoil of the resistance of the transplanting cup that bites into the recess, and as a result, the bottom dead center When the transplanting cup rises from above, there is a problem that the soil surface in the recess is pressed on the front side of the transplanting cup (the front side in the traveling direction of the traveling machine body), and the collapse of the recess occurs.

[0004] Further, in the case where leaves grow over a wide range when grown, such as tobacco seedlings, the transplanting interval to the ridges is lengthened, and transplantation is performed in a deep planting hole having a large opening area on the upper surface side of the ridges. There is a need. For this reason, the shape of the transplanting cup is configured to be a half-cone having a large opening area on the upper surface side, so that the phenomenon of soil collapse in the recess at the front side of the transplanting cup increases. In particular, when transplanting seedlings on ridges of dry soil, the landslide described above becomes severe, and the dry soil around the upper surface of the ridges returns to the planting holes for the seedlings. However, there is also a problem that the seedlings are buried in the soil, and the attitude and depth of transplanting the seedlings of the pot seedlings vary, and the seedlings grow poorly.

The present invention has been made in order to solve these problems, and provides a seedling transplanter which does not cause landslide of a recess for a planting hole to be formed on the upper surface of a field ridge. The purpose is to do so.

[0006]

According to a first aspect of the present invention, there is provided a seedling transplanter, comprising: an engine and a transmission case; A seedling supply device for feeding potted seedlings arranged in a matrix on a seedling tray, and a transplanting mechanism for transplanting the potted seedlings into ridges by vertically moving an up-down swing arm equipped with the transplanting cup. And a seedling transplanter comprising: a vertical transplant guide rail for vertically guiding the vertical swing arm in a traveling machine body, and a guide groove of the vertical guide rail. The upper half of the guide groove is formed substantially perpendicular to the ground, and the guide groove of the vertical guide rail is formed so as to be inclined rearward in the traveling direction of the traveling body as the lower half of the guide groove goes downward. .

[0007] The invention described in claim 2 is the first invention.
In the seedling transplanter described in the above, the mulching body is held below the ridge upper surface for a certain section, and when the transplanting cup descends, the mulching body is interlocked so as to be held at a position above the ridge upper surface. The constructed mulching apparatus is provided in front of the transplanting mechanism. According to a third aspect of the present invention, in the seedling transplanter according to the first or second aspect, the seedling transplanting device causes the seedling supply device to pass the potted seedling to the transplanting cup at the ascending position. And a transfer mechanism comprising a seedling removal claw or the like, and when the transplanting cup is at the ascending position, the earthing body is interlocked so as to be located below the upper surface of the ridge.

[0008]

Next, an embodiment of the present invention will be described. FIG. 1 is a schematic side view of a seedling transplanter, FIG.
8A is a schematic plan view of the seedling transplanter, FIG. 8A is a schematic side view of the mulling device, FIG. 7B is a cross-sectional view showing the operation of the mulling device, FIG. FIG. 14 is a plan sectional view of a main part of the transplanting mechanism, FIG. 14 is a diagram of a moving locus of the transplanting cup with respect to the traveling body, and FIG. 15 is a diagram of a moving locus of the transplanting cup with respect to the ridge surface.

In a front frame 1a of the traveling body 1, a transmission case 17 containing an engine 18 and a speed change mechanism, and front traveling wheels 4, 4 and rear traveling wheels 5, 5 disposed on both left and right sides constitute an elevating mechanism. Mounted through the field ridges 7
It is configured to travel across the right and left. The lifting mechanism is configured as follows. That is, a piston rod of a hydraulic cylinder (not shown) for elevating and lowering is connected to an intermediate arm of a rotating shaft 9 which is rotatably supported by a bearing portion at a front portion of the traveling body 1 and extends left and right. To be rotatable.
An arm 1 fixed to both left and right ends of the rotating shaft 9
2 is extended to the rear of the traveling body 1, and the front traveling wheel 4 is attached to each arm 12.

On the other hand, the base end of the swing case 15 of the rear traveling wheel 5 is mounted on the axle projecting from both left and right sides of the transmission case 17 so as to be vertically rotatable. The traveling wheels 5 are driven to rotate. When the base end of each swing case 15 and the rotation shaft 9 are rotatably connected via a link mechanism 16 and the piston rod of the hydraulic cylinder is retracted, the rotation shaft 9 and the arm 12 are connected. The front running wheel 4 is moved downward with respect to the running body 1 by the
The rear traveling wheel 5 is moved downward via the swing case 6 and the swing case 15 to raise the traveling body 1 with respect to the ground (increase the ground height). Conversely, when the piston rod of the hydraulic cylinder is protruded, the front running wheels 4 and the rear running wheels 5 are simultaneously raised with respect to the traveling machine body 1 and the traveling machine body 1 is lowered with respect to the ground.

The traveling machine 1 is provided with a handle 19 extending rearward, and a seedling supply 20 is provided so as to be able to reciprocate right and left over a pair of left and right support rods 19a, 19a of the handle 19. The apparatus 3 is provided to reciprocate the seedling mounting table 20 left and right via a lateral feed mechanism 21. The seedling mounting section 20 is provided with a matrix of seedling pot portions 27a in front, rear, left and right in the traveling direction in plan view. The seedling pot 27a is placed one pitch at a time in the forward direction of the traveling machine 1 at the end of the horizontal feeding by the vertical feeding mechanism 22 provided on the seedling mounting table 20. It is configured to intermittently feed vertically.

The seedling supply device 3 will be described in more detail with reference to FIGS. As shown in FIGS. 2 and 3, etc., the seedling mounting table 20 has a substantially rectangular frame 1 in a plan view.
00 and a vertical feed case 10 incorporating a vertical feed transmission portion as a vertical feed mechanism disposed on one side of the frame 100.
1 and a transport chain 1 for vertically feeding the seedling tray 27
02, large and small chain sprockets 103 and 104,
The guide frame 105 and the like are arranged so that the empty seedling tray 27 is guided toward the rear end of the handle 19.

A front-rear guide roller 108 and a vertical guide roller 109 mounted on a frame 100 or the like of the seedling mounting table 20 are supported by left and right support rods 19 of the handle 19.
The seedling mounting table 20 is mounted so as to be able to move left and right without rattling up and down and back and forth by abutting a pair of front and rear U-shaped guide rails 106 and 107 fixed to the left and right sides fixed to a, 19a and the like. .

The seedling tray 27 is made of a soft synthetic resin material having flexibility, and can be bent along the circumference of the large-diameter chain sprocket 103 when mounted on the transport chain 102 and transported. I have. The pair of right and left transfer chains 102, 102 are composed of a large-diameter chain sprocket 103 mounted on a vertical feed drive shaft 110 driven via a power transmission system in a vertical feed case 101, and a frame frame 100.
And a small diameter chain sprocket 104 of a driven shaft 111 rotatably mounted on the driven shaft 111. The pair of right and left transfer chains 102, 102 are provided with laterally engaging pins 112 projecting at an appropriate pitch, and the right and left engaging pins 112 are arranged in the seedling tray 27 in the front-rear direction of transfer. The engaging portion 27a is engaged with the lower surface side of the continuous portion and is reliably transported in the direction of arrow C in FIG. The seedling tray 2 extends along the outer circumference of the large-diameter chain sprocket 103.
A guide piece 113 for guiding the 7 to bend is provided on the frame 100 or the like.

A reciprocating feed screw portion is formed on the lateral feed shaft 115 protruding from the transmission case in the lateral feed mechanism 21. A feed block 116 with a hull key and a seedling mounting table 20 screwed to the reciprocal feed screw portion are provided. An engagement piece 117 such as an engagement bolt projecting from the frame is connected to the seedling mounting table 2.
0 is reciprocated left and right in the width direction of the seedling tray 27 (see FIG. 5). On the other hand, the vertical feed shaft 118 protruding from the transmission case intermittently rotates at the horizontal feed end position of the seedling mounting table 20, and a pair of kicks provided on the vertical feed shaft 118 at the horizontal feed distance. Claws 119, 119
Is a driven cam (not shown) provided on the vertical feed case 101
, And the vertical feed drive shaft 110 is intermittently rotated via a transmission portion in the vertical feed case 101 so that the seedling pot portion 27a is intermittently vertically fed by a constant pitch P2. .

As shown in FIG. 8A, the seedling planting apparatus 2 holds a swinging arm 31 which swings up and down and a pot seedling to be transplanted at the tip of the swinging arm 31 and transplants the seedling to the ridge 7. Mechanism 30 including a transplanting cup 32 and the like, and a seedling pot portion 27 of a seedling tray 27 in the seedling supply device 3
a for removing seedlings for transfer from a to the transplanting cup 32
And a transmission path to the seedling supply device 3 and the transmission mechanism 29 via a plurality of chains 64 wound around the chain sprocket from the transmission case 17 to the seedling supply device 3 and the transmission mechanism 29. Power is transmitted through.

Next, with reference to FIGS. 6 and 7, the structure of the transfer mechanism 29 including the seedling removal claw 60 and the like will be described. The transfer mechanism 29 is provided with a bracket 67 fixed to the traveling machine 1 so that a pair of left and right seedling removal claws 60, which will be described later, are disposed substantially at the center of the traveling machine 1.
An input shaft 71 to which power is transmitted from the changer 64 or the like is rotatably fitted on the inner periphery of the sun gear 70 fixed to the support plate 68. The other end of 71 is fixed to the rotary case 72 so as to rotate integrally.

In the rotary case 72, a sun gear 70 is provided.
And a planetary gear 75 fixed to the crankshaft 74 and meshing with the intermediate gear 73, and a crank arm 76 attached to the crankshaft 74.
A camshaft 77 protruding from the tip of the seedling extraction arm 78 having a pair of left and right seedling extraction claws 60 mounted on one end.
Is rotatably fitted. A guide shaft 79 projecting from the other end of the seedling take-out arm 78 is provided with a substantially arc-shaped guide groove 81 in a guide plate 80 fixed in parallel with the support plate 68.
6, the rotation of the rotary case 72 around the input shaft 71 causes the pair of seedling removal claws 60, 60 to move from the position indicated by the solid line in FIG. It is configured so as to follow a locus that returns to its original state through a posture in which the seedling removal claw pierces the seedling pot portion 27a of the tray 27 for pinching the pot seedling.

The pair of left and right seedling removal claws 60, 6
0, the L-shaped pivots 84, 84
Each of the pivots 84 is rotatably mounted on a spectacle-shaped mounting portion 78a of the seedling take-out arm 78, and a pair of left and right mounting springs (not shown) connecting the left and right mounting pieces 83, 83 is used. The tip ends of the seedling removal claws 60 are urged to always close.

A cam plate 86 is fixed to the cam shaft 77,
On the wide front and back surfaces of the cam plate 86, arc-shaped end surface cam portions 87, 87 are protruded in a section at a rotation angle along the circumferential direction, and the bases of the pair of right and left seedling removal claws 60, 60 are formed. When the contact pieces 88, 88, such as spheres, protruding from the end attachment pieces 83, 83 so as to face each other, ride on the end cam portions 87, 87 and make contact with them, the tips of the two seedling removal claws 60, 60 come into contact with the springs. It is configured to open against the force of.

Further, the pin 8 of the seedling take-out arm 78
The base ends of a pair of rod-shaped pushers (not shown) are rotatably mounted on a mounting plate 90 that can rotate around nine places.
The distal end annular portions 91a of the pushers are slidably fitted to the chopstick-shaped seedling picking claws 60, 60, and the both ends are fixed by springs 93 mounted on a mounting plate 90 and a seedling picking arm 78. The annular portion 91a is urged to move toward the tip of the seedling removal claw 60, 60. A roller 92 attached to the mounting plate 90 is always in contact with the peripheral surface (peripheral cam portion) of the cam plate 86, and the roller 92 is positioned in a concave portion of a predetermined rotation section of the cam plate 86. (When the pot seedling pierced and pinched by the seedling removal claws 60, 60 is located above the transplanting cup 32), the pot seedling is pushed out by the tip annular portions 91a of the both pushing tools, and the seedling is removed. Nails 60,6
It is configured to release (withdraw) a pot seedling from zero.

Next, the transplanting mechanism 30 and the mulling device 120
Will be described with reference to FIGS. First, the implantation mechanism 30 will be described. As shown in FIGS. 9 and 10, the output shaft 23 protruding from the side surface of the transmission case 17 is used.
The base chain sprocket 35 in the chain case 34 of the transplant mechanism 30 is attached to the
The chain sprocket 37 fitted on the rotating shaft 36 on the free end side and the chain sprocket 35
8 to transmit power.

A rotary case 40 is rotatably fitted on one outer surface of the free end side of the chain case 34, and a sun gear 39 is fixedly provided concentrically with the rotation shaft 36. The intermediate gear 41 and the planetary gear 42 meshing therewith are rotatably supported in the rotary case 40. A friction clutch 43 is provided between the chain sprocket 37 and the rotating shaft 36 so that the rotating shaft 36 slides during overload and makes power transmission impossible.

A support shaft 44 on which the planetary gear 42 is mounted
The crank arm 45 is fixed to the
The fifth tip shaft 46 is rotatably mounted in the middle of the swing arm 31. Guide roller 47 at the base end of the swing arm 31
Is vertically slidably fitted to a vertical guide rail 48 which is provided so as to be substantially perpendicular to the ground. The upper and lower vertically long guide grooves 48a on which the guide rollers 47 slide in the vertical guide rails 48 are substantially perpendicular to the ground in the upper half, but go down in the lower half. It is formed in a rearward inclined shape so as to be on the rear side in the traveling direction of the traveling body 1.

The transplanting cup 32 is a pair of cup bodies 32a, 32 each of which has a substantially conical shape tapered downward and is halved in front and rear.
The rotation support shafts 49a and 49b fixed to the upper ends of the cup bodies 32a and 32b are pivotally supported by a support plate 50 protruding from one side of the swing arm 31. The two pivoting shafts 49a and 49b are configured to rotate in mutually opposite directions via an X-shaped link mechanism 51 in a side view in which the middle of the two link pieces is pivotally connected with pins. The link mechanism 51 has a pair of cup bodies 32a,
The lower end of 32b is urged by a spring 52 in such a direction that it always closes. The proximal end of the push rod 53 connected to the link mechanism 51 is supported to be able to move forward and backward with respect to the swing arm 31, and the proximal end of the push rod 53 is covered by the distal end shaft 46 of the crank arm 45. A cam 54 that fits and rotates integrally
Is provided so as to be always in contact.

With this configuration, when the rotary case 40 is rotated in the direction of arrow A in FIG. 9 (clockwise in FIG. 9) via the chain sprockets 35 and 37 and the rotation shaft 36 by the rotation of the output shaft 23, the sun Due to the meshing rotation of the gear 39, the intermediate gear 41, and the planetary gear 42, the crank arm 45 rotates in the direction of arrow B (counterclockwise in FIG. 9). The transplanting cup 32 moves up and down from the front position of the seedling tray 27 to the ridge 7 because it moves up and down along the vertically long guide groove 48 a of the vertical guide rail 48 while swinging back and forth around the location.

At this time, as described above, the vertically long guide groove 48a on which the guide roller 47 slides in the vertical guide rail 48 is substantially perpendicular to the ground in the upper half portion 48a1. In the half portion 48a2, the traveling body 1 is formed so as to be inclined rearward toward the rear in the traveling direction of the traveling body 1 as going downward (see FIG. 9), and as shown by a solid line in FIG. The movement trajectory 55 of the lower end of the transplantation cup 32 with respect to the phase from the 0 degree phase of the rotary shaft 36 (when the guide roller 47 is located slightly below the uppermost position of the upper half 48a1) to the vicinity of the 90 degree phase. A section corresponding to the section where the guide roller 47 passes through the upper half portion 48a1 is convexly curved in the traveling direction of the traveling body 1 (the direction of arrow D), but is a section from near 90 degrees to near 150 degrees. (The above guide roller Section 7 corresponds to a section passing through the lower half 48A2) will be lowered substantially perpendicular to the ground. The trajectory K indicated by the dotted line in FIG. 14 indicates the lower end of the transplantation cup 32 when the vertically long guide groove 48a in the vertical guide rail 48 is straight and at a posture of approximately 90 degrees with respect to the ground (conventional example). 4 shows a movement locus.

As can be understood from a comparison between the two trajectories, the trajectory K has a phase 150
Even in the section up to the vicinity of the degree, since the traveling body 1 is convexly curved in the traveling direction (the direction of arrow D), the traveling body 1 is moved forward by the recoil of the resistance of the transplanting cup 32 that has cut into the recess of the ridge 7. When the transplanting cup 32 ascends from the vicinity of the bottom dead center as a result of being pushed away, the front side of the transplanting cup (the front side in the traveling direction of the traveling body) has a soil in the recess. When the surface is pushed, the landslide of this recess occurs. However, when the transplanting cup 32 descends substantially perpendicularly to the upper surface of the ridge 7 as in the present invention, it is almost from the bottom dead center (phase is approximately 165 degrees). Traveling aircraft 1 even on the ascent stroke
Is hardly acted on, so that the soil on the front side of the concave portion 139 (the front side in the traveling direction of the traveling body) is not broken, and the rape leaves of the transplanted pot seedling N are buried in the soil. Since it does not occur, the subsequent generation is also good.

The transplanting cup 32 is in a closed state until the bottom dead center (approximately 165 degrees in phase), starts to open from this point, reaches a maximum opening at approximately 240 degrees in phase, and closes at 285 degrees in phase self-clutch. is there. The solid line in FIG. 15 is for transplanting to the ground (the ridge 7) when the guide roller 47 moves up and down along the vertical guide rail 48 having the lower half 48a2 of the downwardly inclined rearward direction as in the present embodiment. A movement locus (also referred to as a dynamic locus) 56 of the lower end of the cup 32 is shown. In this case, it is possible to descend substantially perpendicularly to the ground from near the phase of 120 degrees to near the bottom dead center. It can be seen that no landslide occurs because the soil surface inside the recess is not pushed at the (front side in the traveling direction of the traveling body). The trajectory of the dotted line in FIG. 15 corresponds to the trajectory K of the dotted line in FIG. 14 (conventional example), and is a moving trajectory (also referred to as a dynamic trajectory) with respect to the ridge 7 which is a stationary position.

In the transplanting cup 32, the lower ends of the pair of cup bodies 32a, 32b are closed at the raised position, so that the posture can be maintained even when the pot seedling N to be transplanted is inserted into the inside thereof. . In this case, in order to transplant the tobacco pot seedling N, the pair of cup bodies 32a and 32b in the embodiment have a circular opening area at the upper end and a conical shape with a short height. , 6
In order to prevent the potted seedlings N released from 0 onto the transplanting cup 32 from falling down, a half-frustoconical frustoconical guide tube 32c with a small difference in the upper and lower radii is provided on the inner diameter side of each of the cup bodies 32a and 32b. , 32d.

On the other hand, when the transplanting cup 32 is lowered and the lower ends of the cup bodies 32 a and 32 b pierce the soil surface of the ridge 7, the pushing rod 53 is pushed out by the cam 54, and both pivots are made via the link mechanism 51. Since the support shafts 49a and 49b are rotated in opposite directions to open the lower ends of the cup bodies 32a and 32b, the pot seedlings N inside can be transplanted to the ridges 7.

FIG. 8 (a) and FIG.
As shown in (b), the mulling body 121 made of a metal plate disposed at a position forward of the transplanting mechanism 30 and formed in a mountain shape in plan view as shown in FIGS. The cam plate 122 (see FIG. 10) fixed to the end of the rotary shaft 36 with bolts or the like is formed so that recesses are formed at appropriate intervals in the upper and lower surfaces of the ridge 7. ), And the earth moving body 121 is intermittently driven up and down via the following link mechanism having the driven roller 126.

The support shaft 12 is mounted on a bracket plate 124 projecting from the lower surface of the traveling body 1 in parallel with the chain case 34.
And a driven roller 126 pivotally supported at one end of a rotation lever 125 rotatably fitted on the support shaft 124.
Are disposed so as to be in sliding contact with the outer peripheral cam surface 122a of the cam plate 122. The link mechanism includes the rotating lever 12
5 and a first engagement hole 127 formed in the other piece 125a.
Turnbuckle 12 with one end connected to pin 128
9 and one of the turning pieces, the other end of which is integrally turned with a pivot 130 pivotally supported on a boss 131 provided on the lower end side of the bracket plate 124 so as to be rotatable. It is configured so as to be connected to the pin 132 via a pin 133.

Further, the burrower 1 is inserted into any one of a plurality of upper and lower mounting holes 132a formed in a pair of rotating pieces 132, 132 mounted on both ends of the pivot 130.
By connecting the arms 134 projecting from both ends of the respective 21 via connection pins 135, the mulling body 1 is connected.
It is configured such that the height position of 21 (the size of a pit depth H1 described later) can be adjusted. The boss 1
One end of the torsion spring 136 wound around the outer periphery of the base 31 is engaged with the bracket plate 124 or the like, and the other end of the torsion spring 136 is engaged with one of the turning pieces 132 or the like. It is biased upward. In this case, between the boss 130 and the rotating piece 134, a stopper mechanism 137 comprising a bolt whose screwing height can be changed and a restricting piece abutting on the bolt is provided to regulate the ascending position of the earthing body 121. , And the height thereof can be adjusted.

Outer peripheral cam surface 12 of the cam plate 122
When the driven roller 126 is pressed at 2a, the rotating lever 12
Since the rotating piece 132 is rotated clockwise in FIG. 11 via the 5, 125 a and the turnbuckle 129, the burrow 121 is pushed down below the upper surface of the ridge 7 against the urging force of the torsion spring 136. This pushing-down timing is performed while the transplanting cup 32 is stopped at the raised position for a certain period of time, and
Is held for a certain section at the level 7a below the upper surface of the (see FIG. 8A). When the transplanting cup 32 is lowered, the driven roller 126 is positioned at a phase without the cam plate 122, and the biasing force of the torsion spring 136 holds the earth moving body 121 at a position above the upper surface of the ridge 7. They work together.

When it is not desired to intermittently drive the mulling body 121 up and down as described above,
When it is desired to keep 0 in a non-operating state, the second engagement hole 127b ( The turnbuckle 12 is positioned at a position closer to the pivot 130 than the first engagement hole 127 is.
9 is connected to the pin 128 by a position switching device.
26 moves away from the cam plate 122 so as to be unrelated to the cam plate 122, so that the mulching body 121 can always be positioned above the upper surface of the ridge 7 to eliminate the descent, and can be easily applied to a seedling transplanting operation that does not require mulling. This has the effect.

With the above configuration, when the seedling supplying device 3 and the seedling planting device 2 are operated while the traveling machine 1 is moving forward, the seedling mounting table 20 in the seedling supplying device 3 moves rightward or leftward in the traveling direction. In synchronism with this movement, the pair of seedling removal claws 60 in the transfer mechanism 29 are moved to the seedling tray 2.
Then, the pot seedling N is pinched and extracted from the seedling pot portion 27a of No. 7, and the pot seedling N is released into the transplanting cup 32 stopped at the ascending position in the transplanting mechanism 30. Meanwhile, with the configuration of the above-mentioned mulching device 120, the mulling body 121 descends to move the upper surface of the ridge 7 by the depth H1 and the front and rear length L1.
After the mulling, the mulling body 121 returns to the raised position (see FIG. 8A). Next, the transplanting cup 32 is lowered,
The soil is pushed downward to below the level 7a to form a recess 139. A pot seedling N is planted on the ridge 7 near the lower end of the process at the location shown in FIG.

When the soil of the ridge 7 is dry, the transplanting cup 32 is immediately lowered to form a deep recess.
When the transplanting cup 32 is raised, the soil returns to the concave portion due to the landslide, burying the leaves of the potted seedling N, the sunlight does not hit, and the seedlings grow poorly. As in the present invention, by forming a recess 139 as a planting hole in the transplanting cup 32 after a part of the upper surface of the ridge 7 is once recessed with the earthing body 121, even if the soil is dry, The landslide does not occur, and the upper side of the concave portion 139 can be largely opened. Further, as shown in FIG. 8B, the recess 1
Since the embankment portion 140 is formed before and after the position 39, when the multi-film 141 is laid in a later step, the concave portion 1 is formed.
There is an effect that the space of 39 can be enlarged and the lighting can be made good.

As shown in FIG. 13, the shape of the mulching body 121 is such that the right and left ends of the traveling body 1 in the traveling direction are shallow, the left and right central sides are deep, and the traveling body 1 is advanced in the left and right central sides. If it is formed so that it is on the front side of the direction,
The resistance of the soil at the time of the burying operation is small, and the pushing resistance when forming the concave portion 139 as the planting hole in the transplanting cup 32 later can be reduced.

The mulling apparatus according to the present embodiment is also applicable to a seedling transplanter of a type in which an operator takes out pot seedlings manually from a seedling tray placed on a traveling machine and drops them onto a transplanting cup 32 of a transplanting mechanism. It goes without saying that it can be applied. Further, as in the present invention, a substantially upper half portion of the guide groove of the vertical guide rail 48 is formed substantially perpendicular to the ground, and the vehicle travels along a substantially lower half portion of the guide groove of the vertical guide rail. It is needless to say that the transplanting mechanism formed in a downward rearward inclined shape so as to be located on the rear side in the traveling direction of the body can be applied to a type that does not include the above-described mulling device and the seedling transfer mechanism.

[0041]

As described in detail above, the seedling transplanter according to the first aspect of the present invention includes an engine, a transmission case, and a seedling mounted on a traveling body which runs on a ridge with left and right traveling wheels. It is composed of a seedling supply device for supplying pot seedlings arranged in a matrix on a tray, and a transplanting mechanism for transplanting the pot seedlings into ridges by vertically moving an up-down swing arm equipped with the transplanting cup. A vertical guide rail for vertically guiding the vertically oscillating arm in a traveling machine body, and a substantially upper portion of the guide groove of the vertical guide rail. The half portion is formed substantially perpendicular to the ground, and is formed so as to be inclined rearward in the traveling direction of the traveling body as the lower half portion of the guide groove of the vertical guide rail goes downward.

With this configuration, the transplanting cup can be lowered almost perpendicularly to the upper surface of the ridge, and almost no component force is required to push the traveling body forward even during the ascent stroke from near the bottom dead center. It does not act, so the soil on the front side of the recess as a planting hole (the front side in the traveling direction of the traveling machine) is not broken, and the rape leaves of the transplanted pot seedlings are not buried in the soil. An effect that the generation is also good is exhibited.

Further, the invention described in claim 2 is the same as the claim 1.
In the seedling transplanter described in the above, the mulching body is held below the ridge upper surface for a certain section, and when the transplanting cup descends, the mulching body is interlocked so as to be held at a position above the ridge upper surface. The constructed mulching apparatus is provided in front of the transplanting mechanism. With this configuration, when the ridged soil is dry, the transplanting cup is suddenly lowered to form a deep recess, and when the transplanting cup is raised, the inside of the recess due to landslide is collapsed. The soil returns, fills the leaves of the pot seedlings, does not shine sunlight, and the seedlings grow poorly, but as in the present invention,
After a part of the upper surface of the ridge is once dented by the mulling device, a concave portion as a planting hole is formed by the transplanting cup, and according to the configuration of the invention of claim 1, the transplanting cup is mulled. Since it descends almost perpendicularly to the upper surface of the later soil, even if it is dry soil, no landslide occurs, and the upper side of the recess can be greatly opened, and the lighting efficiency is improved. This has the effect.

According to a third aspect of the present invention, there is provided the seedling transplanter according to the first or second aspect, wherein the seedling planting device is provided with a transplanting cup in which a pot seedling is raised from the seedling supply device. A transfer mechanism comprising a seedling extraction claw or the like for passing the seedlings to the plant, wherein when the transplanting cup is at the ascending position, the burrower is interlocked so as to be positioned below the upper surface of the ridge. 1 and Claim 2
In addition to the functions and effects of the above, the timing of the intermittently interlocking operation of the raising and lowering operation of the burying body and the raising and lowering operation of the transplanting cup does not cause parts to interfere with each other, and furthermore, the transfer mechanism to the transplanting cup at the raised position Since the pot seedlings can be automatically transferred from the seedling supply device, the effect of extremely simplifying the seedling transplantation operation is also achieved.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a seedling transplanter.

FIG. 2 is a schematic plan view of the seedling transplanter.

FIG. 3 is a schematic side view of a main part of a seedling mounting table.

FIG. 4 is a schematic side view of a seedling supply device.

FIG. 5 is a plan view of a main part of a lateral moving component of the seedling mounting table.

FIG. 6 is a side view showing a positional relationship among a transfer mechanism, a seedling supply device, and a transplanting cup.

FIG. 7 is a sectional view of a main part of the transfer mechanism.

FIG. 8A is a schematic side view showing a transplanting mechanism and a mulling device, and FIG. 8B is a diagram showing a transplanting state of a pot seedling.

FIG. 9 is a side view of a main part of the transplantation mechanism.

FIG. 10 is a plan sectional view of a main part of the transplantation mechanism.

FIG. 11 is a diagram illustrating the operation of the mulling device.

FIG. 12 is a schematic plan view of the mulling apparatus.

FIG. 13 is a perspective view of an earthen body.

FIG. 14 is a trajectory of vertical movement of the transplanting cup with respect to the traveling machine.

FIG. 15 is a locus of vertical movement of the transplantation cup with respect to the ridge.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 running machine 2 seedling planting device 3 seedling supply device 4 front running wheel 5 rear running wheel 7 ridge 17 transmission case 27 seedling tray 29 transfer mechanism 30 transplanting mechanism 31 swing arm 32 transplanting cup 34 chain case 40 rotary case 45 crank Arm 55 Movement locus 60 Seedling removal claw 120 Soil crusher 121 Soil crusher 122 Cam plate 125 Rotating lever 126 Follower roller 129 Turnbuckle 134 Arm 139 Recess

Claims (3)

[Claims] 1. A seedling supply device for supplying an engine, a transmission case, and a potted seedling arranged in a matrix on a seedling tray to a traveling machine body that is self-propelled across ridges with left and right traveling wheels, A seedling transplanter comprising a transplanting mechanism configured to transplant a pot seedling to a ridge by vertically moving an up-down swing arm equipped with a transplanting cup, and a seedling transplanter comprising: A vertical guide rail for guiding in the vertical direction is erected on the traveling body, and a substantially upper half of the guide groove of the vertical guide rail is formed substantially perpendicular to the ground, and a guide groove of the vertical guide rail is formed. A seedling transplanter characterized in that it is formed so as to be inclined rearward in the traveling direction of the traveling machine as the lower half of the traveling machine goes down. 2. The mulching body is held below the upper surface of the ridge for a certain section, and when the transplanting cup is lowered, the mulling body is interlocked so as to be held at a position above the upper surface of the ridge. The seedling transplanter according to claim 1, further comprising a mulling device provided in front of the transplanting mechanism. 3. The seedling planting device further includes a transfer mechanism including a seedling removal claw or the like for transferring the pot seedling from the seedling supply device to the transplanting cup at the raised position, and the transplanting cup is positioned at the raised position. The seedling transplanter according to claim 1, wherein the burrower is interlocked so as to be positioned below the upper surface of the ridge.