JPH07298723A - Apparatus for division and transportation of seedling for transplanter - Google Patents

Abstract

PURPOSE:To prevent the damage of the leaf part of a seedling during the lateral transfer of a seedling frame even in the case of using a seedling having high plant height such as green soybean or welsh onion in a seedling dividing and transferring apparatus of a transplanter to push seedlings from a seedling frame one by one during the lateral transfer of a seedling frame holding a number of laterally and longitudinally arranged pot seedlings, clamp the seedling, transfer to a planting apparatus and release in the planting apparatus. CONSTITUTION:A seedling transfer mechanism 58 for transferring a pot seedling 41 pushed out from a seedling frame 42 to a planting apparatus is provided at the tip end with a pair of freely openable and closable clamping parts 82L to clamp the soil part 41b of the pot seedling 41 and with a clamping member supported at the base part with a supporting frame 39 to enable the motion of the clamping part 82L between a seedling receiving position and a seedling releasing position. The pot seedling 41 is received between the clamping parts 82L in the case of pushing out the pot seedling 41 with the seedling pushing mechanism by opening the clamping parts 82L by an opening means 84 placed between the base part side of the clamping member and the supporting frame 39.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a transplant for transporting pot seedlings (soil block seedlings) such as vegetables grown in a seedling frame having a large number of pot portions one by one from the seedling frame to a planting device. Machine seedling delivery device.

[0002]

2. Description of the Related Art Conventionally, as a transplanter for transplanting pot seedlings of vegetables or the like to a field, there is one described in JP-A-58-190303. As shown in FIG. 21, this transplanter has a seedling frame 151 having a large number of pots 151a vertically and horizontally.
Is supported by the traveling machine body in a posture in which the pot seedlings 152 in the pot portion 151a are in a sideways shape, and an extrusion rod 153 that pushes the pot seedlings 152 backward one by one while the seedling frame 151 is laterally fed. Behind the seedling frame 151, a seedling picking body 155 that holds the pot seedling 152 extruded by the extruding rod 153 and sends it to the planting cup 154 for release.
Are supported by the support 156.

The seedling collecting body 155 has a pot seedling 15 on the tip side.
A pair of left and right sandwiching parts 1 for sandwiching and holding two soil parts 152a
57, each holding portion 157 has a locking claw 158 protruding inward. The base of the seedling collecting body 155 is pivotally attached to the rotating arm 160 that rotates around the rotating shaft 159, and the middle part of the seedling collecting body 155 is pivotally attached to the swinging arm 162 that swings around the support shaft 161. By the rotation of the arm 160 in the direction of the arrow F, the holding portion 157 has a D-shaped locus G.
, And move in the direction of the arrow H.

Below the seedling collecting body 155, the planting cup 1
54 is supported by a parallel link mechanism 163 so as to be vertically swingable, and the pot portion 15 at the seedling pushing position of the seedling frame 151.
A spreading guide 164 is provided on the lower rear side of the la 1 so as to extend upward. Then, the pot seedlings 152 are extruded one by one onto the expansion guide 164 by the extruding rod 153 while the seedling frame 151 is laterally fed, while the seedling collecting body 1 is
When 55 moves upward, the holding part 157 is opened by the expansion guide 164, and when the locking claw 158 is disengaged from the expansion guide 164, the holding part 157 is closed and the locking claw 158 fixes the soil part 152a of the pot seedling 152. Hold it so that it sticks from both sides.

After that, the seedling collecting body 155 is moved backward,
When the pot seedling 152 is disengaged from the expansion guide 164, the pot seedling 152 rotates around the locking claws 158 so that the leaves face upward, while the planting cup 154 rises.
The discharge cam 165 provided on the planting cup 154 has a holding portion 1
By interposing between 57, the nipping portion 157 is opened, the pot seedlings 152 are discharged to the planting cup 154, and then the planting cup 154 descends and is pierced into the field and spreads. The seedlings 152 are adapted to be planted.

[0006]

In the above-mentioned conventional one, the pot seedling 152 extruded from the pot portion 151a.
Expansion guide 16 for opening the holding portion 157 before holding
4 is a pot portion 151a at the seedling extrusion position of the seedling frame 151
Since it is arranged at the lower rear side of the plant, for example, in the case of a long-length plant such as edamame or green onion, the leaf portion of the seedling 152 hangs down, and this leaf portion expands when the seedling frame 151 is fed laterally. There is a problem that the guide 164 is caught and the seedling 152 is damaged.

Further, as shown in FIG. 21, when a vertically oscillating planting cup 154 is used as a transplanting device, it is necessary to consider that interference between the expansion guide 164 and the planting cup 154 should be avoided. Therefore, there is also a problem that the space between the seedling frame 151 and the planting device in the seedling extrusion direction becomes large, and the device becomes large accordingly. Then, this invention aims at solving the said problem.

[0008]

The technical means taken by the present invention to achieve the above-mentioned object is to obtain a large number of pot seedlings 41.
A seedling pushing mechanism 57 for pushing out the pot seedlings 41 one by one is provided by the seedling pushing mechanism 57 while horizontally feeding the seedling frame 42 in which the pot seedlings 41 are horizontally laid down. A seedling feeding device of a transplanting machine, which is provided with a seedling conveying mechanism 58 for sandwiching the extruded pot seedling 41 and sending it to the lower planting device 26, which is the seedling conveying mechanism 5.
8 includes a sandwiching body having a pair of openable and closable sandwiching portions 82L and 82R for sandwiching the soil portion 41b of the pot seedling 41 on the tip side, and the base portion side of the sandwiching body is the sandwiching portions 82L and 82R.
R is supported by the support frame 39 so as to move between a seedling receiving position for sandwiching the extruded pot seedling 41 and a seedling discharging position for discharging to the planting device 26. When the seedling 41 is pushed out by the seedling pushing mechanism 57, the first opening means 84 for opening the sandwiching portions 82L, 82R so that the pot seedling 41 is received between the sandwiching portions 82L, 82R is provided with the first opening means 84. And support frame 39
It is in the point provided between and.

Further, the holding portion 82 by the first opening means 84.
The opening of L, 82R is set to an opening size necessary and sufficient for receiving the soil portion 41b of the pot seedling 41, and the pot seedling 41 is planted between the base side of the sandwiching body and the support frame 39.
It is preferable to provide the second opening means 88 that makes the opening of the sandwiching portions 82L and 82R when discharging to the upper side larger than the opening when pushing out the pot seedlings.

Further, a crank arm 62 and an upper part of a swing arm 63 arranged behind the crank arm 62 are pivotally attached to the support frame 39, and the crank pin 66 at the turning end of the crank arm 62 and the swing arm 63 swing. The pin 67 at the moving end is interlocked and linked by an interlocking link 68, and the holding body is composed of a pair of left and right holding arms 77L and 77R.
A spring 80 for urging the sandwiching portions 82L and 82R in a closing direction is provided between the L and 77R, and the base portions of the sandwiching arms 77L and 77R are linked so that the tip ends of the sandwiching arms 77L and 77R project rearward. The pot 68 is rotatably supported by the link 68 about the vertical axis and holds the pot seedling 41 between the arms 77L, 7L.
It is preferable to be configured to push forward at the rear position of 7R.

Furthermore, a pair of left and right interlocking arms 71 are rotatably supported by the interlocking link 68 about the vertical axis and interlockingly connected so as to allow the pivotal movement about the vertical axis.
By fixing the base portions of the left and right holding arms 77L and 77R to the L and 71R, the holding portions 82L and 82R are opened and closed, and the engaging portions 85 and 89 are provided on one of the interlocking arms 71L and 71R. In the middle of the movement path of the interlocking link 68, the engaging portion 8 is attached to the support frame 39.
It is preferable that the first and second opening means 84 and 88 are configured by providing the engaged portions 86a and 90 that engage with each other 5 and 89 to open the sandwiching portions 82L and 82R.

[0012]

The pot seedling 41 has the seedling pushing mechanism 57 while the seedling frame 42 is laterally fed in a posture in which the pot seedling 41 is in a sideways state.
Extruded one by one by this extruded pot seedling 4
1 is sandwiched by the seedling transport mechanism 58 and sent to the planting device 26 and released. The seedling conveying mechanism 58 is provided with a sandwiching body having a pair of openable and closable sandwiching portions 82L and 82R for sandwiching the soil portion 41b of the pot seedling 41 on the tip side, and the base of the sandwiching body is the sandwiching portion. 82L and 82R are supported by the support frame 39 so as to move between the seedling receiving position and the seedling releasing position, and the pot seedling 41 has the seedling pushing mechanism 5.
When the pot seedling 41 is pushed out by the
Clamping portions 82L and 8 so as to be received between 2L and 82R
The first opening means 84 for opening the 2R is provided between the base side of the holding body and the support frame 39, and the lateral movement of the seedling frame 42 causes the opening means 84 to cause the leaf portion 41 of the pot seedling 41.
There is no fear of catching a.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 9 and FIG. 10, the transplanter 1 has a walking type, and includes the moving device 2 and the transplanting device 3 mounted on the moving device 2. Hereinafter, the advancing direction of the transplanter 1 is referred to as the front-rear direction, and the lateral direction orthogonal to the advancing direction is referred to as the left-right direction.

The moving device 2 includes a vehicle body frame 4, an engine body 5 mounted on the frame body 4, a transmission case 6, a pair of left and right handles 7, and the like, and a traveling system that supports and moves the vehicle body 8. And device 9. The traveling device 9 has a pair of left and right front wheels 10 and a pair of left and right rear wheels 11. A generator 12 driven by the engine 5, a hydraulic pump 13, a battery 14 and the like are mounted on the front portion of the vehicle body frame 4. The front wheel 10 is rotatably provided on a support member 15, and the support member 15 is attached to a support shaft 16 provided at the front end of the vehicle body frame 4 in the left-right direction so as to be movable and fixed in the axial direction.

As shown in FIG. 11, the rear wheel 11 is fixed to an axle 18 provided at the lower portion of the transmission case 17, and the upper portion of the transmission case 17 is at the upper portion of the transmission case 6 or the vehicle body frame 4.
It is fixed to the axle case 19 provided on the left and right side surfaces of the axle case 1 so as to project outward, and the power from the engine 5 is applied to the axle case 1
9 and the power transmission mechanism in the transmission case 17, etc., and is transmitted to the axle 18 to rotate the rear wheel 11. Axle 1
8 is provided with a plurality of holes for fixing the rear wheel 18 along the axial direction, and by selecting one of the holes, the left and right rear wheels 1
1 is adjustable to any position in the left-right direction.

The axle case 19 is constructed so that it can be expanded and contracted in the left-right direction, and it is expanded and contracted by the feed screw device 20.
Also by this, the left and right rear wheels 11 can be independently adjusted to any positions in the left-right direction. As shown in FIG. 10, the axle case 19 has a vehicle height adjusting hydraulic cylinder 21.
The axle case 19 is rotatably operated by the expansion and contraction of the cylinder 21, whereby the transmission case 17 swings up and down about the axis of the axle case 19 to increase the vehicle height. It is supposed to be adjusted. Further, one end of the arm 22 and the support shaft 16 supporting the front wheel 10 are connected via a front wheel retreat hydraulic cylinder 24, and the front wheel 10 moves up and down together with the vehicle height adjusting hydraulic cylinder 21. In addition to being swung, only the front wheel 10 is swung up and down by the expansion and contraction of the front wheel retreat hydraulic cylinder 24.

As shown in FIG. 12, the handle 7 has a horizontal portion 7a extending rearward from the rear portion of the transmission case 6 or the body frame 4 while maintaining a substantially horizontal shape, and extends diagonally upward from the rear end of the horizontal portion. The handle 7 is provided with various operation levers and switches such as a clutch lever and an operation panel (not shown), which is composed of an inclined portion 7b and a grip portion 7c extending rearward from the upper end of the inclined portion 7b.

The transplanting device 3 comprises a seedling supplying device 25, a planting device 26, and a soil covering device 27 which are integrated into a unit.
It is arranged between the rear part of the mission case 6 and the grip 7c of the handle 7, and is attached to the machine body 8 by a pivotal support device 28 in the front part and a resilient support device 29 in the rear part. Pivot device 2
As shown in FIG. 11, 8 has a graft device mounting bracket 30 fixed to the rear portion of the machine body 8.
A drive shaft 32, which is a spline shaft, is rotatably supported between a pair of left and right bearing portions 31 provided on the drive shaft 32. An input sprocket 33 that is rotationally driven by power from the engine 5 is provided at one end of the drive shaft 32. The sprocket 33 and the drive shaft 32 are provided so as to be rotatable relative to each other, and can be connected and separated via a clutch 34.

A cylinder shaft 35 is spline-fitted to the drive shaft 32 so as to be movable in the left-right direction, and a drive sprocket 36 is fixed to the cylinder shaft 35. An outer cylinder 37 is fitted onto the cylinder shaft 35 via a bearing, and a feed screw device 38 is provided between the outer cylinder 37 and the bracket 30, and a feed screw 38a of the device 38 is rotated. By doing
The outer cylinder 37 and the cylinder shaft 35 move integrally on the drive shaft 32 in the left-right direction.

A support frame 39 is fixed to the outer cylinder 37 so as to project rearward and upward, and the support frame 39 is formed by vertically arranging a single steel plate. An elastically supporting device 29 elastically supports the horizontal portion 7a of the left and right handle 7 so as to be vertically movable and movable in the left and right directions. The seedling feeding device 25 is used for a large number of pot seedlings 4
A seedling frame feeding device 43 for intermittently feeding the seedling frame 42 containing 1 vertically and horizontally, and a seedling feeding device 44 for transporting the pot seedlings 41 from the seedling frame 42 to the planting device 26 one by one. It is configured.

The seedling frame 42 is made of plastic and has flexibility, and has a large number of pot portions 42a arranged in a grid pattern at a predetermined pitch in the vertical and horizontal directions, and the opening edges of the pot portions 42a are mutually flat. Pot portion 4
A hole is opened at the bottom of 2a. Then, by filling the pot portion 42a with bed soil, sowing and raising seedlings there,
Pot seedling 41 composed of leaf portion 41a and soil portion 41b
It is said that

As shown in FIGS. 12 to 15, the seedling feeding device 43 includes a fixed frame 45 and a movable frame 46, and the fixed frame 45 is framed in a rectangular shape by upper and lower frames and left and right frames, and a support frame 39. Is fixed to the mounting frame 47 that is fixed to the rear end of the movable frame 4 in an inclined manner.
A frame 6 is composed of left and right side members and a connecting member for connecting the side members, and is supported on the front side of the fixed frame 45 so as to be movable in the left and right directions.

A rack 48 is fixed to the back side of the movable frame 46 along the left-right direction, and a pinion 49 meshing with the rack 48 and a transverse feed motor 50 for driving the pinion 49 are provided on the fixed frame 45. The lateral feed motor 50 is intermittently driven by a predetermined amount, and the pinion 49 is intermittently rotated to move the movable frame 46 in one of the left and right directions at a predetermined pitch. By rotating the motor 50 forward and backward, the movable frame 46 is rotated. 46 moves back and forth in the left-right direction.

The lower portions of the left and right side members of the movable frame 46 are curved and formed rearward, and a guide groove 51 for guiding the seedling frame is formed in the side member along the side member. A U-shaped groove that opens inward in the left-right direction, and also opens at the upper and lower ends of the side members. The left and right edges of the seedling frame 42 are inserted from the openings of the upper end portions of the guide grooves 51 on both the left and right sides, and the pot seedling 41 is held in a posture in which the pot seedling 41 is in a slightly inclined sideways-like shape toward the front upper side. Frame 4
2 is guided by the guide groove 51 to move downward and can be discharged from the opening at the lower end.

The movable frame 46 has a drive sprocket 52 at the bottom of the left and right members and a driven sprocket 5 at the top.
3 is provided, a chain 54 is hung between both sprockets 52 and 53, engagement projections 55 are projected on the chain 54 at predetermined intervals, and the drive sprocket 52 is driven by a vertical feed motor 56. By intermittently driving the motor 56, the engaging projections 55 engage with the pot portions 42a of the left and right outermost rows of the seedling frames 42 inserted into the guide grooves 51 from above to move the seedling frame 42 downward. The left and right drive sprockets 52 are connected by a rotary shaft, and the lateral feed motor 50 and the vertical feed motor 56 are DC motors. The seedling feeder 44 laterally feeds the seedling frame 42. It is composed of a seedling pushing mechanism 57 for pushing the pot seedlings 41 forward one by one in between, and a seedling transport mechanism 58 for sandwiching the pushed pot seedlings 41 one by one and sending them to the planting device 26 for discharging. ing

The seedling extruding mechanism 57 includes an extruding rod 59 that is removably inserted into the pot portion 42a through a hole at the bottom, a crank mechanism 60 that reciprocates the extruding rod 59 in its axial direction, and the crank. An extrusion motor 61 that rotationally drives the mechanism 60, and the extrusion motor is a DC motor. The push-out bar 59 is arranged so as to be located in a substantially central portion in the left-right direction of the fixed frame 45 and in a linear portion slightly above the curved portion of the movable frame 46, and
The push rod 59 is attached to the fixed frame 45 to the bracket 72 so that the push rod 59 is provided so as to be tilted slightly upward toward the front so as to match the tilt direction of the pot seedling 41, and is provided so as to push the bottom center of the pot seedling 41. It is supported by being inserted through a guide pipe 73 which is fixedly mounted via the shaft so as to be movable in the axial direction.

As shown in FIGS. 1 to 8, the seedling transfer mechanism 58 includes a crank arm 62 arranged in the front part on the upper right side of the support frame 39 and a swing arm 63 arranged in the rear part of the upper part. Have and. The crank arm 62 is fixed to an end portion of a crank shaft 64 which is rotatably supported by the support frame 39 so as to have a horizontal axis. An upper portion of the swing arm 63 is pivotally supported by the support frame 39 via a pivot shaft 65, and a lower portion thereof is swingable in the front-rear direction.

The crank pin 66 of the crank arm 62 and the pin 67 at the swing end of the swing arm 63 are linked to each other by the interlocking link 6
8, and a mounting base 69 is fixed to the interlocking link 68 so as to project rightward. The mounting base 69 is formed by a plate material in a U shape that is open downward.
A pair of left and right interlocking arms 71L and 71R are arranged at intervals above the tube 9 via a cylindrical spacer, and a supporting shaft 70 inserted into each interlocking arm 71L and 71R is projected downward. The left and right interlocking arms 71L and 71R are fixed to each other and supported by the mount 69 via the support shaft 70 so as to be rotatable around the vertical axis.

The inner end sides of the pair of interlocking arms 71L and 71R are vertically overlapped with each other so that the right interlocking arm 71R is on the lower side. The dowel pin 74 is fixed, and a U-shaped engaging groove 75 that engages with the engaging pin 74 is formed in the left interlocking arm 71L. Then, by the engagement of the engagement groove 75 and the engagement pin 74, both the interlocking arms 71
L and 71R are interlockingly connected so that the rotation around the support shaft 70 is allowed.

A support block 76 is fixed to the lower surface of each interlocking arm 71R, 71L, and the base portions (front end side) of the holding arms (holding bodies) 77L, 77R are fixed to the left and right support blocks 76.
Is inserted through in the front-rear direction so that the holding arms 77L, 7L
7R is provided so as to project rearward, and the interlocking arm 71
The front end side (rear end side) of the left and right holding arms 77L and 77R is configured to approach and separate from each other, that is, to open and close by rotating the R and 71L around the support shaft 70. Also, the holding arm 7
7L and 77R are fixed to a support block 76 by bolts 78, and by loosening the bolts 78, the forward and backward movements are allowed and the forward and backward positions can be adjusted.

A mounting plate 79 is fixed to the lower surface of the left and right support blocks 76, and a tension coil spring 80 is provided between the left and right mounting plates 79 so that the tip ends of the pair of left and right holding arms 77L and 77R come close to each other. Further, the one mounting plate 79 has the other mounting plate 7
A stopper bolt 81 is provided for contacting with 9 to regulate the distance between the left and right holding arms 77L, 77R when the left and right holding arms 77L, 77R are closed, and the stopper bolt 81 is screwed and retracted in the axial direction. By doing so, both arms 77L,
The 77R closed interval is adjustable.

A sandwiching portion 82 for sandwiching the soil portion 41b of the pot seedling 41 is provided on the tip end side of each of the left and right sandwiching arms 77L, 77R.
L and 82R are provided, the left holding portion 82L is made of a vertically oriented plate material, and the right holding portion 82R is made up of a vertically oriented side plate portion 83a and a horizontally oriented bottom plate portion 83b, and from the tip of the holding arm 77R. The L-shaped plate 83 has a length that extends in the middle of the lengthwise direction, and is formed by the rear end side portion of the side plate portion 83a.

The seedling transport mechanism 58 includes a left and right holding arm 77.
Two opening means are provided in order to move the L and 77R in the separating direction, that is, to perform the opening operation. First opening means 8
Reference numeral 4 is for opening the pot seedling 41 pushed out from the seedling frame 42 so as to receive the pot seedling 42 between the holding portions 82L and 82R before holding the pot seedling 41. The cam roller (engaging portion) 85 and the cam plate 4 are provided. And a cam surface (engaged portion) 86a formed on 86. The cam roller 85 is
The left interlocking arm 71L is attached to the left side of a bent portion 87 formed by bending the left end side downward, the cam plate 86 is formed in an inverted L shape, and is attached and fixed to the left side of the support frame 39. An arcuate cam surface 86a with which the cam roller 85 abuts is formed at the corner of the cam plate 86.

The second opening means 88 is the pot seedling 4 which is sandwiched.
1, which is opened to release 1 to the planting device 26, and includes a spring plate (engagement portion) 89 and a cam block (engagement portion).
And 90. The spring plate 89 has a slit that opens leftward in a mounting block 91 that is fixed to the left side of the support shaft 70 on the upper surface of the left interlocking arm 71L, and is inserted into this slit so as to project to the left and bolts. The cam block 90 is mounted by fixing it with the cam block 90, and the projection amount can be adjusted by loosening the mounting bolt 92.
Is fixed to the upper front portion of the right side surface of the cam plate 86.

A plate 93 is fixed to the left side surface of the interlocking link 68, and a stopper bolt 94 for contacting the left interlocking arm 71L and restricting the open limit of the left and right holding arms 77L and 77R is provided on the plate 93. By opening and closing the stopper bolt 94, the open limit of the left and right holding arms 77L and 77R can be adjusted.

The crankshaft 64 projects to the left of the support frame 39, and a cylindrical body 96 is fixed to the protruding portion via a friction joint 95, and a sprocket 97 is fixed to the cylindrical body 96. The friction joint 95
As shown in FIG. 20, a sleeve 98 interposed between the cylindrical body 96 and the crankshaft 64, and a flange 100 fastened to the flange portion of the sleeve 98 by a bolt 99.
And the flange 100 is tightened by tightening the bolt 99 so that the flange 100 has the piston ring 101 and the sealing ring 10.
2 presses the pressure medium 103 contained in the sleeve 98 to integrally fix the crankshaft 64 and the sprocket 97, and loosens them in the opposite direction to release the fixation of the crankshaft 64 and the sprocket 97. The rotational position can be adjusted arbitrarily.

The sprocket 97 is shown in FIG. 11 and FIG.
As shown in FIG. 6, the support frame 3 is disposed below the support frame 3
9 is interlockingly connected to a sprocket 104 pivotally supported by 9 through a chain 105, and a gear 107 is fixed to a support shaft 106 supporting the sprocket 104. The gear 107 is pivotally supported by a support frame 39 via a support shaft 108. Shaft 108 that is engaged with the gear 109 and supports the gear 109.
A sprocket 111, which is linked to the drive sprocket 36 via a chain 110, is fixed to the.

By this seedling distribution power transmission system, the power from the engine 5 is transmitted to the crankshaft 64 and the crank arm 62 rotates in the direction of arrow A, and the crank arm 62 is rotated.
In one rotation, the holding portion 82 of the holding arms 77L, 77R
The tip portions of L and 82R move in the direction of arrow B so as to draw a D-shaped locus C. The planting device is shown in FIGS.
As shown in FIG. 9, there is a pair of front and rear first parallel links 112 arranged on the right side surface of the support frame 39. The upper end of the first parallel link 112 is pivotally supported by the support frame 39, and A swing plate 113 is pivotally mounted, and a pair of upper and lower second parallel links 114 are attached to the swing plate 113.
The front end portion of is attached to the shaft, and the planting cylinder 115 is pivotally attached to the rear end of the second parallel link 114.

The planting cylinder 115 is a tubular body having a rectangular cross-section that is open and closed, and a receiving plate 116 projecting obliquely upward and forward is fixed to the front edge of the upper end opening of the planting cylinder 115. A beak-shaped perforating claw 117 that is freely openable and closable is pivotally supported in the front and rear, and the lower end opening of the planting cylinder 115 is openably and closably covered by the front and rear perforating claw 117. In addition, the front and rear drilling claws 11
5, the interlocking device 118 is adapted to open and close in conjunction with the vertical movement of the planting cylinder 115.

The first parallel link 112 has the support shaft 108.
By the first crank mechanism 119 which is driven by the second parallel link 11
4 is vertically swung around the front end shaft supporting portion by the second crank mechanism 120 which is driven by the power transmitted from the support shaft 108 through the chain transmission mechanism 121, whereby the planting cylinder 115 is rocked back and forth and up and down. It moves and moves in the direction of arrow E so as to draw a D-shaped locus D. The connection between the second crank mechanism 120 and the chain transmission mechanism 121 is also shown in FIG.
The friction joint 95 shown in 0 is used.

As shown in FIGS. 12 and 17, the soil covering device includes a supporting frame 39 and a reinforcing frame 1 facing the supporting frame 39.
The bottom of the mounting arm 123 protruding downward from the lower part of the cover 22 is covered with the earth cover frame 12 pivotally supported in the vertical direction.
4, a pair of left and right soil-covering wheels 125 are supported by the soil-covering wheel frame 124 in a freely rotatable manner. Soil cover 125
Is formed such that its outer peripheral surface is a tapered surface, and the rotating shaft of the earth covering wheel 125 is arranged so as to be inclined so that the tapered surface makes surface contact with the upper surface of the ridge.

The rear end of the soil-covered wheel frame 124 is suspended by a suspension culvert 126. The hanging culm is engaged with the engaging portion 127 fixed to the mounting frame 47 in a height adjustable manner. In the above structure, the pot seedling 41 is transplanted to the field as follows. First, the movable frame 46 is stopped at either one of the left and right stroke end positions, the seedling frame 42 is inserted into the guide groove 51 of the movable frame 46, and the vertical feed motor 56 is started to feed the seedling frame 42 downward. The bottom pot portion 42a of the frame 42 is the push rod 59.
The motor 56 automatically stops when it reaches the seedling pushing position.

Next, the extruding motor 61 of the seedling extruding mechanism 57 is started by a command to start planting work, and the crank mechanism 6 is started.
The push rod 59 moves forward through 0 to move to the pot portion 42a.
It is inserted from the bottom hole into the pot seedling 41
Is pushed forward. The push rod 59 is then attached to the pot portion 4
Exit from 2a and stop at the standby position. When the seedling 41 is extruded, the transverse feed motor 50 starts and the movable frame 46
To move 1 pitch laterally and stop.

On the other hand, when the seedling 41 is extruded, the sandwiching portions 82L and 82R of the seedling transport mechanism 58 are located immediately in front of the pot portion 42a from which the pot seedling 41 is extruded, as shown in FIG. The upper rear end of the locus C) and the cam roller 85 contacts the cam surface 86a so that the left and right holding portions 82L, 8
2R is open and the seedling 41 is sandwiched between the left and right parts 82L, 82R.
It is supposed to be accepted in the meantime. Left and right sandwiching portion 82 at this time
The opening amounts of L and 82R are set such that the sandwiching portions 82L and 82R do not interfere with the leaf portion 41a of the seedling 41 that is adjacent to the pushing position. Further, the sandwiching arms 77L, 77R are inclined downward slightly toward the rear, and the pot seedling 41
It is configured so as to intersect the pushing direction of No. 1 and to sandwich the soil portion 41b so as not to interfere with the leaf portion 41a.

Then, as shown in FIG. 1, the interlocking link 68 and the holding arm 77 are rotated by the rotation of the crank arm 62.
L, 77R and the like are moved slightly forward and the cam roller 85 is disengaged from the cam surface 86a.
82R is closed and the pot seedling 41 is pinched. At this time, the holding arms 77L, 77R are positioned below the line segment a in the seedling pushing direction passing through the center of the pot seedling 41 and along the direction intersecting the line segment a.
The soil portion 41b can be reliably held without the L and 82R interfering with the pot seedling 41 leaf portion 41a.

When the soil portion 41b of the pot seedling 41 is sandwiched, the left and right sandwiching portions 82L and 82R are closed so that the soil portion 41b is firmly sandwiched so that the soil portion 41b does not collapse. Has been done. As a result, even if the extruded leaf portion 41a of the pot seedling 41 is entangled with the leaf portion 41a of the adjacent pot seedling 41, the leaf portion 41a can be reliably separated.

After that, by the rotation of the crank arm 62, the sandwiching arms 77L and 77R move forward and then largely incline downward, and as shown in FIGS. 5 and 6, the pot seedling 41 moves from the sideways posture to the soil portion 41b. The posture is changed to the vertically oriented posture, and the spring plate 89 contacts the cam block 90 at substantially the lowest point of the locus C, and the left interlocking arm 71
Left and right holding part 82 until L contacts stopper bolt 94
L and 82R are opened to release the sandwiching of the pot seedling 41, and the pot seedling 41 is located at the uppermost point of the locus D and the sandwiching portion 82L,
It is released to the planting cylinder 115 located below the seedling releasing position of 82R.

At this time, the pot seedling 41 slides on the bottom plate portion 83b of the L-shaped plate 83 provided on the right holding arm 77R and is guided downward by this, so that the posture is stable and the plant height such as edamame or green onions is stable. Even if the seedling has a long length, it is extremely unlikely that the leaf portion 41a hangs and is caught by something. In addition, the left and right holding portions 82L when releasing the seedlings,
The opening amount of 82R is set to be larger than the opening amount at the seedling receiving position in order to surely release it to the planting cylinder 115.

The released pot seedling 41 is inserted into the planting tube 115, and then the planting tube 115 is lowered while holding the pot seedling 41 and pierced in the field, and at the same time, the perforating nail 17 is formed.
Is opened and the soil portion 41b of the pot seedling 41 is placed in the planting hole formed by the drilling claw 17, and then the soil cover 125
The soil is covered and the transplant is completed. While the pot seedling 41 is planted in the field, the sandwiching portions 82L and 82R are in the locus C.
From the lowest point to the upper direction while moving backward (at this time, the spring plate 89 elastically deforms and slides on the cam block 90), and as shown in FIGS. When it is disengaged, the sandwiching portions 82L and 82R are closed once, and immediately thereafter, the cam roller 85 contacts the cam surface 86a to open the sandwiching portions 82L and 82R, and in this open state, the sandwiching portions 82L and 82R are raised to raise the seedlings described above. Reach the pickup location.

When the pot seedlings 41 are pushed out from all the pot portions 42a on the horizontal steps of the seedling frame 42 by repeating the above-mentioned operation, the vertical feeding motor 56 feeds the seedling frame 42 downward by one pitch, In the opposite direction, the movable frame 46 is intermittently fed laterally by one pitch and the seedling planting operation is continued. By repeating the above operation, the pot seedlings 41 of all the pot portions 42a of the seedling frame 42 are extruded one by one and transplanted.

The seedling feeding device 25 is provided with a control device for controlling the lateral feeding, the vertical feeding, and the pushing operation of the seedlings. Further, electric power is supplied to the transverse feed motor, the longitudinal feed motor, and the extrusion motor from the generator or the battery via the control device.

[0052]

According to the present invention, when the pot seedlings are extruded by the seedling pushing mechanism, the first opening means for opening the sandwiching portions so that the pot seedlings can be received between the sandwiching portions, the sandwiching body. By installing it between the base side and the support frame of the plant, when the seedling frame is fed laterally, the leaf of the pot seedling is hooked on the expansion guide that opens the holding part, which damages the seedling. Even if a vertically swinging planting cup is used as the transplanting device, the gap between the seedling frame and the planting device in the seedling pushing direction can be reduced, and the device can be downsized accordingly.

Further, the opening of the nipping portion by the first opening means is set to an opening dimension necessary and sufficient for receiving the soil portion of the pot seedling, and the pot seedling is planted between the base side of the nipping body and the support frame. By providing the second opening means for making the opening of the nipping portion when discharging to the attaching device larger than the opening when the pot seedling is extruded, at the seedling receiving position, the nipping portion is adjacent to the extruding position. It does not interfere with the leaf part, and the sandwiching part can be fully opened at the seedling releasing position.

[Brief description of drawings]

FIG. 1 is a side view of a seedling feeding device.

FIG. 2 is a view showing an arrow I in FIG.

3 is a cross-sectional view taken along the line JJ of FIG.

FIG. 4 is a plan view showing a state where the seedling dispensing device is expanded by the first opening means.

FIG. 5 is a side view of the seedling dispensing device at a seedling discharging position.

FIG. 6 is a view showing an arrow K in FIG.

FIG. 7 is a side view of the seedling dispensing device on the way from the seedling discharging position to the seedling receiving position.

FIG. 8 is a side view of the seedling dispensing device on the way from the seedling discharging position to the seedling receiving position.

FIG. 9 is an overall side view of the transplanter.

FIG. 10 is an overall plan view of the transplanter.

FIG. 11 is a partial cross-sectional plan view of the pivotal portion of the implant device.

FIG. 12 is a side view of the transplanter.

FIG. 13 is a side view of the seedling feeding device.

FIG. 14 is a front view of the seedling feeding device.

FIG. 15 is a plan view of a seedling feeding device.

FIG. 16 is a side view of the seedling feeding device.

FIG. 17 is a plan view of a seedling supply device and a soil covering device.

FIG. 18 is a front cross-sectional view of the drive part of the planting device.

FIG. 19 is a plan sectional view of a part for driving the planting device.

FIG. 20 is a sectional view of a friction joint.

FIG. 21 is a side view showing a conventional feeder for a transplanter.

[Explanation of symbols]

 26 Planting Device 39 Support Frame 41 Pot Seedling 42 Seedling Frame 57 Seedling Extrusion Mechanism 58 Seedling Transfer Mechanism 62 Crank Arm 63 Swing Arm 66 Crankpin 67 Pin 71L Interlocking Arm 71R Interlocking Arm 77L Clamping Arm 77R Clamping Arm 30 Coil Spring 82L Clamping Part 82R Clamping portion 84 First opening means 85 Cam roller (engagement portion) 86a Cam surface (engaged portion) 88 Second opening means 89 Spring plate (engagement portion) 90 Cam block (engaged portion)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Takashi Terada, 64 Ishizukitamachi, Sakai City, Osaka Prefecture, Kubota Sakai Factory Co., Ltd. (72) Hideo Fujita, 64, Ishizukitamachi, Sakai City, Osaka Manufacturing, Kubota Corporation In-house (72) Inventor Yukio Shimono, 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Factory

Claims (4)

[Claims] 1. The pot seedlings (41) are fed one by one while the seedling frame (42) accommodating a large number of pot seedlings (41) vertically and horizontally is fed in a horizontal posture. A seedling conveying mechanism that includes a seedling pushing mechanism (57) that pushes out the seedlings one by one, and that holds the pot seedling (41) that is pushed by the seedling pushing mechanism (57) and sends it to the lower planting device (26) for release. A seedling dispensing device for a transplanter equipped with a mechanism (58), wherein the seedling transport mechanism (58) has a pot seedling (41) on the tip side.
It has a sandwiching body having a pair of openable and closable sandwiching portions (82L) and (82R) for sandwiching the soil portion (41b), and the base side of the sandwiching body is the sandwiching portions (82L) and (82R).
Supported by a support frame (39) so as to move between a seedling receiving position for sandwiching the extruded pot seedling (41) and a seedling discharging position for discharging to the planting device (26). In the case where the pot seedling (41) is extruded by the seedling extruding mechanism (57), the pot seedling (41) is clamped by the holding part (82).
L), (82R) so as to be received between the sandwiching portion (82
L), the first opening means (84) for opening (82R),
A seedling dispenser for a transplanter, which is provided between the base side of the holding body and the support frame (39). 2. A holding part (8) by the first opening means (84).
2L) and (82R) are set to an opening size necessary and sufficient for receiving the soil portion (41b) of the pot seedling (41),
Between the base side of the sandwiching body and the support frame (39), the opening degree of the sandwiching portions (82L), (82R) when the pot seedling (41) is discharged to the planting device (26) is the pot seedling. The seedling dispensing device for a transplanter according to claim 1, further comprising a second opening means (88) having a larger opening than the opening degree during extrusion. 3. A support frame (39) having a crank arm (62) and a swing arm (63) arranged behind the crank arm (62).
The crank pin (66) at the pivot end of the crank arm (62) and the pin (67) at the pivot end of the pivot arm (63) are interlocked by an interlocking link (68). The holding body is composed of a pair of left and right holding arms (77L) and (77R), and left and right holding arms (77L) and (77R).
A spring (80) for urging the holding portions (82L) and (82R) in the closing direction is provided between the R and R, and each holding arm (77).
L), (77R), the holding arms (77L),
(77R) is rotatably supported by the interlocking link (68) about the vertical axis so that the tip side of the (77R) protrudes rearward, and the pot seedling (41) is located at the rear position of the holding arms (77L), (77R). The seedling dispensing device of the transplanter according to claim 1 or 2, which is configured to be pushed forward. 4. A pair of left and right interlocking arms (71L) rotatably supported by the interlocking link (68) about the vertical axis and interlockingly connected so as to allow the pivotal movement about the vertical axis.
(71R), left and right clamping arms (77L), (77R)
By fixing the base part of the holding part (82L), (82L)
R) is configured to be opened and closed, and the interlocking arm (71
L) and (71R) are provided with engaging portions (85) and (89), and the engaging portions (85) and (89) are engaged in the middle of the movement path of the interlocking link (68). Engagement part (86) for opening the holding parts (82L), (82R)
The seedling distribution of the transplanter according to claim 3, wherein the first and second opening means (84) and (88) are configured by providing a) and (90) on the support frame (39). apparatus.