JPH07298721A - Transplantation apparatus - Google Patents

Abstract

PURPOSE:To prevent the damage of seedling by a swinging mechanism for supporting and vertically swinging a seedling transfer member to clamp a seedling and transfer the seedling downward. CONSTITUTION:This transplantation apparatus is provided with a seedling transfer member having a pair of freely openable and closable clamping parts 82L for clamping the soil part 41b of a seedling 41 at the tip end of the transfer member and supported at the base part with a supporting frame 39 in such a manner as to enable vertical swing of the clamping part 82L. The seedling transfer member is composed of clamping arms 77L, 77R and an interlocking link 68, etc., and positioned under a line (a) passing the center of the seedling 41 and directing in the pushing direction of the seedling to take a posture crossing the line (a) in the case of clamping the pushed seedling 41. The base part of the seedling transfer member is pivoted to the rotary end of a crank arm 62 pivoted to the supporting frame 39 to enable the vertical swing of the clamping part 82L of the seedling transfer member. The middle part of the seedling transfer member is pivoted to the swinging end of a swinging arm 63 pivoted to the supporting frame 39 at the upper end.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention extrudes pot seedlings (soil block seedlings) such as vegetables grown in a seedling frame having a large number of pots one by one from the seedling frame and conveys them downward. The present invention relates to a transplanting device adapted to be planted in a field.

[0002]

2. Description of the Related Art As a conventional transplantation device, Japanese Patent Laid-Open No. 56-7
Japanese Patent No. 2611 discloses an implanting device as shown in FIG. In FIG. 21, reference numeral 131 denotes a seedling frame having a large number of pot portions in the vertical and horizontal directions, and pot seedlings 133 are grown in the pot portion of the seedling frame 131. The seedling frame 13
No. 1 is held by a holding frame 134 fixed to the traveling machine body with its upper end inclined forward, and an extrusion rod 135 is provided in front of the holding frame 134 so as to advance and retreat, and the seedling frame 131 is laterally fed. In the meantime, the pot seedlings 133 are pushed backward one by one by the push rod 135, and the pushed pot seedlings 133 are sandwiched and sent downward by the seedling transport mechanism 136, and are placed on the field. Is released.

The seedling transport mechanism 136 has a holding arm 137 for holding the soil portion of the pot seedling 133, and the holding arm 13
The rear end portion of 7 is pivotally attached to the lower end portion of a swing arm 138 whose upper end portion is pivotally attached to a support frame fixed to the traveling machine body, and the middle end portion of the sandwiching arm 137 is pivotally attached to the support frame at the lower end portion. The vertical moving rod 139 is pivotally attached to the upper end portion thereof, and the midway portion of the vertical moving rod 139 is pivotally attached to the lower end portion of the operating rod 141 provided with the eccentric ring mechanism 140 on the upper end portion.

When the eccentric ring mechanism 140 rotates, the holding arm 137 causes the pot seedling 1 to be pushed out.
It moves up and down between a seedling receiving position (shown by a solid line) for sandwiching the soil portion 33 and a planting position (shown by a virtual line) for carrying the pot seedling 133 downward and planting it in the field. .

[0005]

In the above-mentioned conventional one, at the seedling receiving position, the holding rod 137 does not coincide with the pushing direction of the pot seedling 133, in other words, with respect to the seedling pushing direction. Since the cross section of the pot seedling 133 is sandwiched, the leaves of the pot seedling 133 do not interfere with the soiling of the pot seedling 133 and the leaf portion is not damaged. In the case of a seedling having a long grass height as described above, the leaf portion may interfere with the eccentric ring mechanism 140 and be caught.

An object of the present invention is to eliminate the above problems.

[0007]

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 transplantation device comprising a seedling transport mechanism 58 for sandwiching and pushing out the extruded pot seedling 41, wherein the seedling transport mechanism 58 is a pot seedling 4 on the tip side.
A pair of openable and closable holding portions 82 for holding the first soil portion 41b.
A seedling carrier having L and 82R and having a base side supported by a support frame 39 so that the sandwiching portions 82L and 82R swing up and down is provided, and this seedling carrier has an extruded pot seedling 41. When sandwiched, the seedling is formed so as to be positioned below the line segment a in the seedling extrusion direction passing through the center of the pot seedling 41 and along the direction intersecting with the line segment a. In order to swing the sandwiching portions 82L, 82R of the carrier up and down, the base end side of the carrier seedling is pivotally supported on the rotating end of the crank arm 62 pivotally mounted on the support frame 39, and The middle part is located at a point where the upper end side is pivotally supported on a swing end of a swing arm 63 whose upper end is pivotally attached to a support frame 39.

[0008]

In the pot seedling 41, the seedling pushing mechanism 5 is used while the seedling frame 42 is fed laterally in a posture in which the pot seedling 41 is in a horizontal state.
The pot seedlings 41 are extruded one by one by 7 and the extruded pot seedlings 41 are sandwiched by the sandwiching portions 82L and 82R provided on the leading end side of the seedling transporter of the seedling transport mechanism 57.

The seedling carrier has a support frame 39 on the base end side.
Is pivotally supported on the rotating end of a crank arm 62 pivotally mounted on
The middle portion is pivotally supported on the swing end of a swing arm 63 whose upper end side is pivotally attached to the support frame 39, and
The holding portions 82L and 82R are configured to swing up and down by two rotations, and the pot seedling 41 held by the seedling carrier is sent downward and discharged.

When sandwiching the pot seedling 41 with the sandwiching portions 82L and 82R extruded, the seedling carrier transports the center of the pot seedling 41 in order to securely sandwich the soil portion 41b of the pot seedling 41. It is positioned below the line segment a in the direction of pushing out the seedlings and has a posture along the direction intersecting with the line segment a. In the case of the pot seedling 41 having a long plant height, the leaf portion 41a reaches the swing arm 63. The swing arm 63
Since it only swings around the shaft attachment part on the upper end side, there is no problem.

[0011]

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 body for supporting and moving 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 this support frame 39 is formed by vertically arranging a single steel plate, and the rear portion of the support frame 39 is the above-mentioned. 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 is flexible, and has a large number of pot portions 42a arranged in a vertical and horizontal pattern at a predetermined pitch, and the opening edge portions 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 is provided with 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 that meshes with the rack 48 and a transverse feed motor 50 that drives 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 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 horizontal feed motor 50 and the vertical feed motor 56 are connected.
Is a DC motor. The seedling feeding device 44 is a seedling pushing mechanism 57 that pushes the potted seedlings 41 forward one by one while the seedling frame 42 is fed laterally, and one pushed potted seedling 41. It is composed of a seedling transport mechanism 58 which sandwiches each of them and sends them to the planting device 26 for release.

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 bases (front end sides) of the sandwiching arms 77L, 77R are inserted through the left and right support blocks 76 in the front-rear direction to penetrate the sandwiching arm 77L. , 77R are provided so as to project rearward, and the left and right holding arms 77L, 77L are rotated by rotating the interlocking arms 71R, 71L around the support shaft 70.
The front end side (rear end side) of 77R is configured to approach and separate, that is, to open and close. Also, the holding arms 77L, 77R
Is fixed to the support block 76 by bolts 78,
By loosening 8, the back and forth movement is allowed, and the back and forth position can be adjusted.

A mounting plate 79 is fixed to the lower surfaces 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, 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 ends 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.

A seedling carrier is mainly constituted by the interlocking link 68, the mounting base 69, the interlocking arms 71L and 71R, the sandwiching arms 77L and 77R, and the sandwiching portions 82L and 82R. The seedling transport mechanism 58 includes right and left holding arms 77L and 77L.
Two opening means are provided in order to move R in the direction away from each other, that is, to open the opening. The first opening means 84 is for opening the pot seedling 41 to be received between the sandwiching portions 82L and 82R before sandwiching the pot seedling 41 extruded from the seedling frame 42, and the cam roller 85 and the cam plate. And a cam surface 86a formed on 86.
The cam roller 85 is attached to the left side surface of a bent portion 87 formed by bending the left end side of the left interlocking arm 71L downward, and the cam plate 86 is formed in an inverted L shape to form the support frame 3
9 is attached and fixed to the left side surface of the cam plate 8
An arc-shaped cam surface 86 in which the cam roller 85 abuts on the corner of 6
a is formed.

The second opening means 88 is used for the pot seedling 4 which is sandwiched.
It is opened to release 1 to the planting device 26, and is composed of a spring plate 89 and a cam block 90. The spring plate 89 is the support shaft 7 on the upper surface of the left interlocking arm 71L.
The mounting block 91 fixed to the left side from 0 is formed with a slit open to the left, inserted so as to project to the left in this slit, and fixed by a bolt 92 to be mounted. The projection amount can be adjusted by loosening 92, and the cam block 90 is
It is fixed to the upper front part of the right side surface of 6.

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 feeding 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 that projects 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 pushing motor 61 of the seedling pushing mechanism 57 is started by a command to start the 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 seedling carrier composed of the sandwiching arms 77L, 77R, the interlocking link 68, etc. is located below the line segment a in the seedling extrusion direction passing through the center of the pot seedling 41 and in the direction intersecting with the line segment a. And the sandwiching portions 82L and 82R securely engage the soil portion 41b without interfering with the pot seedling 41 leaf portion 41a.
It can be clamped.

Further, when the soil portion 41b of the pot seedling 41 is sandwiched, the closing amount of the left and right sandwiching portions 82L and 82R is set so that the soil portion 41b is firmly sandwiched so as not to 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.

Thereafter, the rotation of the crank arm 62 causes the holding arms 77L and 77R to move forward and then largely incline downward, so that the pot seedling 41 moves from the sideways posture to the soil portion 41b as shown in FIGS. 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 like 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 descends while holding the pot seedling 41 to be pierced into the field, and the perforating claw 17
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.

[0050]

EFFECT OF THE INVENTION According to the present invention, the seedling conveying mechanism for nipping the pot seedlings extruded by the seedling extruding mechanism and sending the potted seedlings downward is opened and closed by nipping the soil portion of the potted seedlings on the tip side. A seedling carrier having a pair of holding parts and having a base side supported by a supporting frame so that the holding parts swing up and down is provided, and the seedling carrier holds the extruded pot seedlings. At this time, in the transplanting device configured to be positioned below the line segment in the seedling extrusion direction that passes through the center of the pot seedling and to be in a posture along the direction intersecting with the line segment, in particular, the tip of the seedling carrier. In order to swing the holding part on the side up and down,
The base end side of the seedling carrier is pivotally supported on the rotating end of a crank arm pivotally mounted on a support frame, and the middle part of the seedling carrier is pivotally supported on the upper end side of a swing arm. Since a swinging motion mechanism that is pivotally supported at the swinging end is used, if the conventional one holds the extruded pot seedling, the leaf portion will be Although there is a risk of being caught in the eccentric wheel mechanism, in the case of the present invention, the leaf portion reaches the swing arm, and the swing arm only swings around the shaft attachment portion on the upper end side. It has a unique effect of not involving a part.

[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 implanting device.

[Explanation of symbols]

 41 Pot Seedling 41b Soil 42 Seedling Frame 39 Support Frame 57 Seedling Extrusion Mechanism 58 Seedling Conveying Mechanism 62 Crank Arm 63 Swing Arm 82L Clamping Part 82R Clamping Part

Claims (1)

[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 extruding mechanism (57) for extruding the seedlings one by one, and a seedling conveying mechanism (58) for sandwiching the pot seedlings (41) extruded by the seedling extruding mechanism (57), sending the seedlings downward, and discharging The transplanting device, wherein the seedling transport mechanism (58) has a pot seedling (41) on the tip side.
And a pair of openable and closable holding portions (82L) and (82R) for holding the soil portion (41b) of the
L) and (82R) are provided with a seedling carrier whose base side is supported by a supporting frame (39) so that the seedling carrier can hold an extruded pot seedling (41). In the seedling extrusion direction that passes through the center of the pot seedling (41) and is positioned below the line segment (a) in the direction of crossing the line segment (a). The crank arm (62) pivotally mounted on the support frame (39) at the base end side of the seedling carrier so as to vertically swing the sandwiching parts (82L), (82R) of the seedling carrier. A transplanting device, which is pivotally supported at an end thereof, and in which a midway portion of the seedling carrier is pivotally supported at a swing end of a swing arm (63) whose upper end side is pivotally attached to a support frame (39). .