JPH0974829A - Taking-out and transferring in divided state of soil-sticking seedling in transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently perform the taking out of a soil-sticking seedling and transferring in a divided state in a transplanter and prevent the stinging or breaking of a leaf or root of a seedling by letting a seedling-taking out tine come into a soil-sticking seedlings on the basis of the open edge of a pot part regardless of the size of a seedling tray. SOLUTION: A seedling-taking out tine 4 is made to reciprocally move between a seedling-taking out position for taking out a soil-sticking seedling 5 from the pot part 3 of a seedling tray 2 and a seedling-supplying position for dropping the soil- sticking seedling 5 against a planting apparatus 35 from above. The taking out of a soil-sticking seedling and transferring in a divided state in a transplanter is performed by letting a seedling-taking out tine 4 come into the soil-sticking seedling 5 on the basis of the open edge of the pot part 3 ragardless of the size of the seedling tray 2. Further, it is preferable that when the seedling-taking out tine 4 come into the soil-sticking seedling 5, it comes into the soil in an inclined state in terms of the direction of the depth of the pot part 3 and comes out in a state roughly parallel to the direction of the shaft of the pot part 3, and the soil-sticking seedling 5 is separated from the pot part 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for picking up and distributing soiled seedlings in a transplanter, and is used for transplanting vegetables such as cabbage and lettuce.

[0002]

2. Description of the Related Art A vegetable transplanting machine for growing seedlings in a seedling tray having a pot portion in a vertical and horizontal lattice arrangement, and taking out seedling soil (soiled seedlings) from the pot portion and transplanting the seedlings is well known. Is trying to mechanize. As disclosed in Japanese Patent Laid-Open No. 4-330211, this type of vegetable transplanting machine has a pair of seedling take-out nails that are capable of plunging into the seedling soil in the pot section of the seedling tray and the pair of seedlings. A claw support provided at the tip of the picking claws away from each other, a pair of claw guides for guiding the advance and retreat of a pair of seedling picking claws, and a holding body for supporting the claw support and the claw guide in a reciprocating manner, respectively. And a pawl operating mechanism that reciprocates the pawl support and the pawl guide.

Then, the seedling take-out claws are inserted into the seedling soil from the opening side of the pot portion and then withdrawn to take out the seedling soil from the opening of the pot portion, and the taken seedling soil is transferred to above the planting device, After setting the nail support and the nail guide in a substantially downward posture corresponding to the planting cylinder, move the nail guide to the tip side of the seedling picking nail, and remove the seedling soil taken out by the seedling picking nail from the seedling picking nail. It is designed to be dropped and supplied to the planting device.

[0004]

The seedling trays are different in size depending on the type of seedlings with soil and the degree of growth, and the shape of the pots (especially the shape of the opening edge) and the number of the pots arranged in a vertical and horizontal lattice pattern are different. ing. Therefore, when plunging the seedling take-out nails into the seedling soil from the opening side of the pot part, if the plunge was carried out randomly without considering the size of the seedling tray, the seedlings might be stabbed or fallen leaves.

Further, the pot portion has a tapered shape in which the bottom becomes thin, and when the seedling soil is pulled out (disengaged) from the pot portion, the seedling soil may be deformed. It has fallen inside and is a factor of stock-out. Furthermore, when the seedling soil extracted from the pot part is dropped from above into the planting tube in the planting device that is moving up and down, if the timing of the movement of the seedling take-out claw and the movement of the planting tube is misaligned, it will come off the planting tube. The seedlings were dropped at a certain position, which was a factor of stock loss.

Therefore, according to the present invention, regardless of the size of the seedling tray, by setting the plunging position of the seedling take-out claw, the seedling soil can be pierced with certainty, and when the seedling soil is taken out from the pot portion, the seedling soil is set in the axial direction of the pot portion. The seedlings are compressed in parallel to prevent the seedlings from collapsing, and during the feeding, the shoulders of the seedlings are supported to feed the seedlings so that the seedlings can be prevented from unexpectedly forming during the feeding. It is an object of the present invention to provide a method for removing and distributing soil-grown seedlings that prevents the seedlings from falling into the planting cylinder and prevents the seedling soil from falling.

[0007]

According to the present invention, a seedling take-out position for taking out the soil-bearing seedlings 5 from the pot portion 3 of the seedling tray 2 and a seedling supply for dropping the soil-bearing seedlings 5 into the planting device 35 from above. A method for picking up / separating soiled seedlings from a transplanting machine, in which the seedling picking nail 4 reciprocates between the position and the position, and the following technical measures are taken to achieve the above-mentioned object.

That is, the present invention is characterized in that regardless of the size of the seedling tray 2, the seedling take-out claws 4 are inserted into the earthed seedlings 5 with reference to the opening edge of the pot portion 3.
By setting the entry position of the seedling take-out nail 4 in this way, the seedling soil can be reliably pierced without damaging the seedling (claim 1). Further, in the present invention, when the seedling take-out nail 4 is thrust into the soil-grown seedling 5, it is thrust obliquely in the depth direction of the pot portion 3, and then the seedling take-out nail 4 is pulled out substantially parallel to the axial direction of the pot portion 3. By doing so, the soil-seeded seedlings 5 are separated from the pot portion 3, and thus the pot portion 3 is removed.
By removing the soil-grown seedlings 5 from the above, the soil-grown seedlings 5 are not compressed in the pot portion 3 and the shape deformation is surely prevented (claim 2).

Further, according to the present invention, when the seedling taking-out nail 4 is thrust into the soil-grown seedling 5, the guide portion 11 of the seedling taking-out nail 4 is pushed against the opening edge of the pot portion 3 to guide it. It is characterized in that the portion 11 is fed while being pressed against the shoulder portion of the soil-grown seedling 5, and the shoulder portion of the soil-grown seedling 5 pierced by the seedling take-out nails 4 is thus guided. The feeding and feeding are performed while being supported by 11, and the accidental drop of the soil-grown seedlings 5 during the feeding is reliably prevented (claim 3).

Further, in the present invention, the soil seedlings 5 are planted in the planting device 3
5, when it is dropped from above, the planting device 35
It is characterized in that the soil-grown seedlings 5 are dropped in a state of being positioned in the upper part of the planting cylinder 43 in FIG. Even if slipped, the seedlings with soil 5 are surely planted in the cylinder 4.
3 can be dropped (claim 4).

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 12 to 14 show the entire passenger transplanter 21, which is used as the passenger traveling vehicle 2.
2, which is equipped with a transplanting device 23 at the rear of the plant, and automatically planting seedling soil 5 (soil block seedlings) at predetermined intervals in each ridge while traveling in the longitudinal direction across two ridges. Is.

The traveling vehicle 22 is provided with an engine, a fuel tank and the like covered with a bonnet 25 and a steering section 26 provided with a steering wheel on a front portion of a vehicle body frame 24.
A driver's seat 27 is provided at the rear of the control unit 26, and the main body frame 24 is movably supported by a pair of left and right front wheels 28 and a pair of left and right rear wheels 29. The front wheels 28 are steering wheels, and the rear wheels 29 or the front and rear wheels 2 are used.
Power from the engine can be transmitted to 8 and 29, and a preliminary seedling stand 30 is provided on the left and right sides of the bonnet 25.

The transplanting device 23 is provided with a carrier device 34 on the upper front side of the main frame 33 for intermittently feeding the seedling trays 2 containing a large number of seedling soils 5 vertically and horizontally, and at the lower rear of the carrier device 34. A planting device 35 provided below the main frame 33 by taking out the seedlings 5 one by one from the seedling tray 2.
The seedling take-out device 1 for delivering to the main frame 33 is provided, and a soil covering / squeezing roller 36 is provided below the rear portion of the main frame 33 to mainly configure the main unit.

The seedling tray 2 is made of plastic, is thin and has flexibility, and is provided with a large number of pot portions 3 arranged in a grid pattern at a predetermined pitch in the vertical and horizontal directions. The parts are connected to each other in a planar shape, and a drain hole is formed in the bottom of the pot part 3.
Then, the pot portion 3 is filled with bed soil, and the seed soil 5 is cultivated by sowing and raising the seedling there.

The main frame 33 is supported at the rear portion of the vehicle body frame 24 of the traveling vehicle 22 so as to be able to move up and down through a three-point link mechanism 38 composed of a top link 38a and a pair of left and right lower links 38b, and the vehicle body frame 24 and the top frame A hydraulic cylinder 39 is provided between the link 38a and the implanting device 23 so that the implanting device 23 can be moved up and down.

The planting device 35 includes a horizontal frame 4 on the main frame 33.
The power to be transmitted from the PTO shaft of the traveling vehicle 22 via the power transmission means 44, which supports the planting cylinder 43 via the swinging link mechanism 42 on the movable frame 41 which is vertically movably supported via 0. Thus, the planting cylinder 43 can be operated so as to draw a long elliptical locus in the vertical direction. The planting cylinder 43 is provided with an opener that can be opened and closed at the bottom, and the opener opens back and forth when it enters the ridge at the lower end side of the elliptical locus to form a planting hole and the upper end of the locus to the planting hole. The seedlings 5 supplied by the side can be planted.

The soil covering / squeezing roller 36 is supported by a movable frame 41 via a support arm 46, and height adjusting means 47 is provided between the movable frame 41 and the support arm 46, and a rear end of the support arm 46 is provided. Engages with a long hole 48a of a lifting limit member 48 provided on the main frame 33. The ascending / descending operation of the movable frame 41 can be interlocked with a control valve that operates the hydraulic cylinder 39 via the ascending / descending operation transmission means 49, and the height of the ridge changes significantly, so that the rear end of the support arm 46 moves up and down. When there is a large vertical movement from the approximate center of the elongated hole 48a of the restriction member 48, the height of the transplantation device 23 is adjusted by operating the hydraulic cylinder 39.

As shown in FIGS. 1 to 11, the seedling take-out device 1 takes out the seedling soils 5 one by one from the pot portion 3 of the seedling tray 2 at a predetermined seedling takeout position with respect to the transport device 34, and The seedling 5 is transferred to above the planting cylinder 43 of the planting device 35 and dropped. The seedling taking-out device 1 includes a pair of needle-shaped seedling taking-out nails 4, a nail support 8 provided with the pair of seedling taking-out nails 4 at the tips thereof, and a nail guide 6 for guiding the pair of seedling taking-out nails 4 back and forth. A holding body 9 that supports the claw support 8 and the claw guide 6 so as to be reciprocally movable in the longitudinal direction, and a claw operation mechanism 10 that appropriately operates the claw support 8 and the claw guide 6.

The pawl operating mechanism 10 reciprocates the seedling take-out pawl 4 between the seedling tray 2 and the planting cylinder 43 while changing the posture thereof, and supports the support frame 14 fixed on the main frame 33. This support frame 14 has a PT
A rotary shaft 51 is provided with a crank body 52 that is driven to rotate counterclockwise in FIGS. 1 and 5 by rotational power from the O-axis. A crank pin 53 is provided on the crank body 52 so as to protrude laterally via an arm, and a drive cam 52A is provided coaxially with the crank body 52.

A lower portion of the swing arm 54 is pivotally connected to the support frame 14 below the crank body 52 by a swing shaft 54A, and a middle portion of the swing arm 54 is vertically (along the arm length). Direction) is formed, and the crank pin 53 of the crank body 52 is formed in the long hole 55.
The pawl operating mechanism 10 is swung for the swing arm 54 to pick up the seedlings 5 to the transport device 34, and the return stroke time is short, while the seedling device 35 is swung. A quick return mechanism is configured in which the forward stroke time of rocking for supplying the soil 5 is longer.

That is, the pot portion 3 is formed by the seedling take-out nail 4.
During the return stroke Y for taking out the seedlings 5 from the soil, the movement is accelerated, and the seedlings 5 are taken out from the pot part 3 and the planting cylinder 4
At the time of the forward path X to be delivered to 3, make a slow movement,
We are trying to improve the efficiency of seedling extraction and supply while preventing the seedling soil 5 from falling during transfer. The holder 9 is pivotally connected to the upper part of the swing arm 54 via a pin 54B. This holder 9
Has a tubular shape at the portion where the pin 54B is provided,
A claw support 8 made of a pipe is inserted and guided in the tubular portion so as to be movable in the axial direction, and the claw support 8 can be moved toward and away from the seedling tray 2 of the transport device 34. A pair of seedling take-out nails 4 that are pierced obliquely into the seedling soil 5 in the pot portion 3 are attached to the tip ends of the nail supporters 8.

A roller 57 is attached to the holder 9 via a bracket 56 so as to be freely rotatable.
7 is engaged with a cam groove 60 formed in a guide plate 59 that is swingably attached to the upper portion of the support frame 14 via a pin 58. The guide plate 59 has a rolling roller 61 at the tip of the protruding arm, and the rolling roller 61 is in contact with the drive cam 52A, and the guide plate 59 is pinned by the counterclockwise rotation of the drive cam 52A. It is possible to swing about 58.

The swinging of the guide plate 59 around the pin 58 causes the leaf 5 of the seedling 5 to move from before the plunge start point (see FIG. 1) when the seedling take-out claw 4 advances toward the pot 3. Pin the tip of the seedling take-out nail 4 with the pin 5
4B is swung, and the posture of the holding body 9 (in particular, the relative angle of the holding body 9 with respect to the swing arm 54) according to the swing angle of the swing arm 54 is regulated.

That is, when the seedling soil 5 is pulled out from the pot portion 3 (from the state shown in FIG. 1 to the state shown in FIG. 2), the relative angle of the holding body 9 with respect to the swing arm 54 does not change so much. The front side (right side in FIG. 1) of the cam groove 60 is shaped so as to move the roller 57 around the swing shaft 54A of the swing arm 54. As a result, the seedling extraction nail 4
The seedling 5 is slowly picked up from the pot part 3 while drawing a locus around the swing shaft 54A of the swing arm 54.

That is, irrespective of the size of the seedling tray 2, the seedling take-out nail 4 is thrust into the seedling soil 5 with reference to the opening edge of the pot portion 3 as shown in FIG. Then, at the plunging start end, the guide portion 11 formed at the tip of the claw guide 6 is pressed against the opening edge of the pot portion 3 so that the pot portion 3
Sloping in the depth direction of the pot, and then pulling out the seedling take-out claws 4 approximately in parallel with the axial direction of the pot part 3 to detach the seedling 5 with soil without compressing it in the pot part 3, It prevents the shape of the.

The seedling soil 5 taken out from the pot portion 3
When the seedlings are transferred to the upper part of the planting cylinder 43 (from the state shown in FIG. 2 to the state shown in FIG. 3), the seedling take-out claw 4 is moved largely backward and downward, and is changed to a substantially downward posture, so that the seedling soil 5
To a substantially vertical position. Therefore, the rear side (left side in FIG. 2) of the cam groove 60 is shaped to move the roller 57 in a direction away from the swing shaft 54A of the swing arm 54.

That is, when the seedling take-out nail 4 stabs the seedling soil 5 in a state of being largely moved rearward for feeding, the shoulder portion of the seedling soil 5 is pressed by the guide portion 11 formed at the tip of the nail guide 6. The seedlings 5 are sent while being prevented from being accidentally dropped. As shown in FIGS. 6 to 9, the claw support 8 is attached to the outer periphery of the claw support 8 in a direction in which the claw support 8 is retracted between the base body 65 provided at the base end thereof and the tubular portion of the holding body 9. A biasing coil spring 66 is interposed, and a claw attachment 67 is fitted and fixed to the front end of the claw support 8.

A pair of seedling picking nails 4 is attached to the nail fitting 67.
Are pivotally supported as shafts by bending the base of the seedling take-out nail 4 at a right angle via the shaft 4a, and the tips of the pair of seedling take-out nails 4 move relative to the claw attachment 67. It is possible to swing. An extruding link 68 is rotatably connected to the lower end of the holding body 9 via a pin 69. A long hole (or long groove) 70 is formed at the tip of the push-out link 68, and is engaged with a pin 71 provided on the protruding arm of the claw attachment 67.

A cam plate 73 is provided on the push-out link 68, and the cam plate 73 can contact the crank pin 53 of the crank body 52. The swing arm 54 is the transport device 34.
When it is located at the swing end on the side (see FIG. 1), the pushing link 68 swings via the cam plate 73 by the rotating crank pin 53, and the pawl attachment 6 is attached to the holding body 9.
7 and the claw support 8 are pushed toward the conveyance device 34 side, and the coil spring 66 is compressed. As a result, the seedling take-out claw 4 is projected and the claw support 8 has a restoring force for retracting.

Reference numeral 6 denotes a claw guide which is slidably inserted in the claw support 8, the base body 65 and the claw attachment 67 in the longitudinal direction, and is formed of a round bar or the like, and the guide portion 1 is provided at the front end thereof.
The member forming 1 is attached across both seedling picking nails 4,
An L-shaped plate-like operating member 76 in side view is attached to the rear end, and a stopper 77 is fixed in the middle thereof.
A spring 78 is fitted between and.

As shown in FIGS. 8, 9, and 11, the claw guide 6
Are triangularly arranged with respect to the two seedling take-out nails 4, two guide-insertion holes 11a are formed in the guide portion 11, and the intervals between the left and right claw-insertion holes 11a are the pivotal support portions of the left and right take-away nails 4. The distance is set to be narrower than the distance K (the distance between the shafts 4a, which are the pivot portions). Therefore, when the seedling take-out nail 4 and the nail guide 6 move relative to each other, the distance L between the tip ends of the seedling take-out nail 4 changes. That is, when the guide portion 11 is located on the tip side of the seedling taking-out nail 4, the distance L between the nail tips is widest, and if the guide portion 11 is immovable and the seedling taking-out nail 4 is projected from this state, the seedling The base side of the take-out claw 4 approaches the guide portion 11, and the distance L between the claw tips gradually decreases.

Therefore, in order to take out the seedlings 5 from the pot part 3, when the seedlings 5 are moved forward, the tips of the left and right seedling picking fingers 4 approach each other while sticking out, and the left and right centerlines S of the seedlings 5 are moved.
It will move on a substantially linear orbit inclined with respect to. Further, when the seedling soil 5 is taken out by the seedling take-out nail 4, when the guide portion 11 of the nail guide 6 is moved from the state of being located on the base side of the seedling take-out nail 4 to the tip side, the distance L between nail tips is set.
Becomes wider from a narrow state, and in parallel to this, the guide portion 11 comes into contact with the seedling soil 5 and pushes out from the seedling take-out nail 4.
At this time, the tip of the seedling take-out claw 4 with respect to the seedling 5 will be removed in the same orbit as the plunging orbit, and damage to the seedling 5 will be minimized during the plunging and the detaching.

Although the claw guide 6 is inserted into the claw support 8 and arranged in a double shaft, the claw guide 6 is separated from the claw support 8 and arranged in parallel vertically or horizontally. Alternatively, it may be arranged between the left and right seedling picking nails 4. In the side view shown in FIG. 6 and the like, the seedling take-out nail 4 is far from the center line S of the seedling soil 5 in the pot portion 3 on the surface side (opening edge side of the pot portion 3) and on the bottom side. Since the seedlings 5 are arranged to be inclined, and thus the seedlings 5 have a substantially truncated pyramid shape, the two seedling picking nails 4 are pierced from the lower two corners of the surface to the center of the bottom face. Since the leaves and roots are not pierced and the tips of the left and right seedling extracting claws 4 are narrowed, they do not collide with the vicinity of the bottom of the pot portion 3.

6 to 9, an operating piece 81 is pivotally supported by the holding body 9 via a shaft 82 and is urged clockwise by a spring in FIG. 6, and the operating piece 81 is one foot. The left arm has a lock portion 81A, the right arm has a release portion 81B, and the foot has a pushing portion 81C. The operating member 76 fixed to the claw guide 6 has a portion 76A parallel to the claw guide 6,
The slide of this portion 76A is guided by the holding body 9 in a non-rotating state, and the operating piece 8 protruding on the sliding surface thereof.
By engaging with the first lock portion 81A, the movement of the claw guide 6 in the protruding direction is restricted.

A lock arm 83 is pivotally supported on the base body 65 at the rear end of the pawl support body 8.
Is urged clockwise by a spring, and an engaged portion 83a engageable with the engaging portion 9a of the holding body 9 is provided on the front side.
, An inclined surface 83b, and a projection 83c protruding forward are formed. When the claw support 8 is projected, the engaged portion 83a of the lock arm 83 is engaged with the engaging portion 9a of the holding body 9 to maintain the state, and the operating piece 81 is rotated to lock the claw support 8. The lock of the actuating member 76 with respect to the portion 76A by 81A is released, the claw guide 6 projects, and the portion 76A abuts the inclined surface 83b.
Even if the engaged portion 83a is disengaged from the engaging portion 9a, and the disengagement is incomplete, the release portion 81B pushes up the projection 83c by the further rotation of the operating piece 81, and the engaged portion 8a.
3a is forcibly disengaged from the engaging portion 9a.

The pushing portion 81C of the actuating piece 81 is adapted to be rotated by contacting a lock releasing member 84 which is provided on the guide plate 59 and whose position can be adjusted. When it moves to the state of FIG. 3 in which the claw 4 is in a substantially downward posture, it abuts on the lock releasing member 84 to cause the claw guide 6 to project, and then the claw support 8 is retracted together with the claw guide 6. The lock releasing member 84 is formed of a bolt or a pin.

The holder 9, the crank 52, the drive cam 52A, the swing arm 54, the guide plate 59, the pushing link 68, and the like support the claw guide 6, the claw support 8, and the like, and the pot portion 3 of the seedling tray 2. From the seedling picking posture toward the planting cylinder 4
A claw movement mechanism 10 that moves while changing the posture to a substantially downward seedling detachment posture facing 3 and takes out the seedling 5 in the seedling take-out posture and drops the seedling 5 in the seedling detachment posture.
Is configured.

Further, the operating piece 8 having the lock portion 81A
1, the operating member 76, the lock arm 83, and the like, when the claw guide 6 is moved to the claw tip side, the claw support 8 and the claw guide 6
The return interlocking means 12 for simultaneously retracting and is configured, and the operation piece 81 having the releasing portion 81B, the lock arm 83, and the like constitute the return ensuring means 13 for ensuring the return operation of the claw support 8 after the operation of the return interlocking means 12. Has been done.

In FIGS. 3 and 11, reference numeral 15 denotes a rounded tongue-shaped disengagement guide body whose upper and lower sides are open and which is attached to a bracket 87 projecting from the support frame 14 so that the position thereof can be adjusted. Is arranged above the planting cylinder 43. This detachment guide body 15 is used for the seedling picking nail 4.
When it takes a substantially downward (slightly inclined) posture, it surrounds the seedling take-out claw 4 and the claw guide 6, and comes into contact with the seedling soil 5 that is separated from the seedling take-out claw 4 by the claw guide 6 and falls. And hold the seedling soil 5 in a proper posture or correct the improper posture.

The separation guide 15 is made of metal, synthetic resin,
The spring material may be formed into a flat plate shape, a half cup shape, a rod shape, or the like, and a contact surface with the seedling soil 5 is formed into a shape that can guide the seedling soil 5 in an appropriate posture. Next, a seedling taking-out operation of the seedling taking-out nail 4 by the nail operating mechanism 10 will be described. In the state of FIGS. 1 and 8, the holding body 9 is at the position closest to the seedling tray 2, and when the crank pin 53 rotates in the central arc portion of the elongated hole 55 of the swing arm 54 from this state, the pushing link 68 is swung about the pin 69, and the nail support 8 and the seedling picking nail 4 are moved to the pot portion 3 via the nail attaching tool 67.
Move it toward the seedling 5 inside.

At this time, as shown in FIG. 6, the claw guide 6
Is immovable because the operating member 76 is in contact with the operating piece 81, and the base body 65 advances, so that the spring 66,
78 is compressed, the engaged portion 83a of the lock arm 83 engages with the engaging portion 9a of the holding body 9, and the return operation is blocked. Further, since the seedling take-out claws 4 move forward with respect to the immovable guide part 11, the pair of left and right seedling take-out claws 4 are restricted by the claw insertion holes 11a of the guide part 11 which are narrower than the interval K between the pivot parts, and the seedling take-out claws 4 are cut. Pierces the seedling 5 while advancing the tip of the and while narrowing the distance L between the tips of the nails. In a side view, the piercing direction of the seedling take-out nail 4 is inclined with respect to the center line S of the seedling soil 5,
It does not penetrate the stems and roots of seedlings.

In this stuck state, the left and right seedling take-out nails 4
Shows a wide V from the two-dot chain line state in FIG. 9 to the solid line state.
It changes from a letter shape to a narrow V shape. In the V-shaped state of the seedling take-out claw 4, the seedling soil 5 is less likely to come off than in the case of being parallel, and the seedling 5 can be strongly taken out from the pot part 3, and the seedling soil 5 is not pinched at the time of change. Therefore, the seedling soil 5 is not damaged.

At this time, the bottom of the pot portion 3 at the seedling take-out position is supported by the backing member 89, and the seedling tray 2
The deformation of the seedlings is prevented, and the stable extraction of the seedling soil 5 by the seedling extraction nails 4 is guaranteed. When the crank body 52 rotates after completion of the stab of the seedling soil 5 by the seedling take-out claw 4, the swing arm 54 swings leftward via the crank pin 53,
Both the seedling take-out claw 4 and the claw guide 6 are separated from the seedling tray 2 and moved on the forward path X through the state of FIG.

When the holder 9 is moved along the forward trajectory X, the rollers 57 provided on the holder 9 are guided by the cam grooves 60 of the guide plate 59, whereby the seedling take-out claws 4 and the claw guides 6 are in a substantially horizontal take-out posture. When the roller 57 moves to the vicinity of the rear end of the cam groove 60 when the roller 57 is changed to a substantially downward disengagement posture shown in FIG. 3, the pushing portion 81C of the operating piece 81 is unlocked by the unlocking member 8.
Start contacting 4.

When the operating piece 81 comes into contact with the lock releasing member 84 and starts rotating (the operation of the return interlocking means 12), the lock portion 81A releases the lock of the operating member 76, and the claw guide 6 is compressed until then. 3 is elastically projected by the spring 78, and as shown in the chain double-dashed line in FIG. 3 and in FIG. 7, it moves forward to the nail tip side with respect to the stationary seedling take-out nail 4 and pushes out the stabbed seedling soil 5. And let go.

At this time, the guide portion 11 of the claw guide 6 is brought into contact with a large surface which does not damage the seedling soil 5, and the detached seedling soil 5 is guided by the detachment guide body 15 so that its posture is properly adjusted. Then, it drops toward the planting cylinder 43 of the planting device 35 and is delivered. When the pawl guide 6 is projected, the unlocked operating member 76 moves integrally,
As shown in FIG. 7, the portion 76A comes into contact with the inclined surface 83b of the lock arm 83 to release the engagement between the engaged portion 83a and the engaging portion 9a. Therefore, the claw support 8 held in the protruding state is elastically retracted by the spring 66 in the compressed state.

At this time, the operating member 7 at the rear end of the claw guide 6
Since 6 is in contact with the back surface of the base body 65 via the cushion 88, the claw guide 6 is also retracted as the claw support 8 is retracted, and both are quickly retracted by the spring 66, so that the falling seedling soil 5 is prevented. Contact of the claw guide 6 with the leaves is avoided as much as possible. If the portion 76A cannot lift the inclined surface 83b of the lock arm 83 due to some reason such as the movement resistance of the claw guide 6 being too large, when the roller 57 moves to the rear end of the cam groove 60, the lock is generated. Release member 84
The operating piece 81 is further rotated by this, and the lock arm 83 is rotated via the projection 83c at the releasing portion 81B (ensuring means 1
3), the engaged portion 83a is forcibly disengaged from the engaging portion 9a, and the backward movement of the seedling take-out claw 4 is ensured. As a result, even if the seedling soil 5 on the seedling taking-out nail 4 cannot be removed by the nail guide 6, the seedling taking-out nail 4 retracts to come off the seedling soil 5 by hitting the nail guide 6.

Then, as shown in FIG. 4, both the seedling take-out claw 4 and the claw guide 6 are returned to the retracted position, and the operating member 76 is locked. When the crank body 52 is rotated from this state, the swing arm 54 is swung to the right, and the holding body 9 is moved to the state shown in FIG. To go back fast. In the movement on the backward movement locus Y, the protrusion of the drive cam 52A acts on the roller 61 of the guide plate 59 from before the seedling take-out claw 4 and the claw guide 6 approach the seedling tray 2, and abruptly changes from the downward posture. Changed to a horizontal posture, so that the seedlings 5 advance to the plunge start position so as to scoop up the leaves of the seedlings 5 or to scoop them under the leaves, so that there are no leaves on the projecting track of the seedling ejection claw 4. To do.

It should be noted that, in FIGS. 1 to 4, the seedling take-out nail 4 is attached to the seedling soil 5.
From the time of piercing the seedling to the time of dropping the seedling soil 5 above the planting cylinder 37, the trajectory X of the tip of the seedling taking-out nail 4 in the seedling taking-out process (forward stroke) is indicated by a chain line, The locus Y of the tip of the claw 4 is shown by a two-dot chain line. Transport device 34
As shown in FIGS. 5 and 12 to 14, the movable frame 92 is arranged rearward of the driver's seat 27 and is supported by the support frame 91 fixed to the main frame 33 in the left-right direction via guide rails or the like. Is equipped with.

The movable frame 92 is arranged forwardly, and the seedling tray 2 is loaded from the upper side of the movable frame 92 along the rear surface of the movable frame so that the opening of the pot portion 3 faces upward and rearward.
The lateral movement of the movable frame 92 laterally feeds it,
It is configured to be vertically fed in the movable frame 92. It should be noted that the movable frame 92 has two seedling trays 2 arranged vertically.
Can be loaded.

The movable frame 92 is provided with a support plate 93 for supporting and guiding the bottom portion of the seedling tray 2 (that is, the bottom portion of the pot portion 3) across the pot portions 3 arranged in a row. The support plate 93 is extended to the pot portion 3 at a position where the seedling soil 5 is taken out by the seedling take-out nail 4.
The tip portion of 3 serves as a backing member 89 for preventing the seedling tray 2 from bending when the seedling take-out nail 4 is pierced into the seedling soil 5 and for stably taking out the seedling soil 5 by the seedling take-out nail 4. ing.

A lateral feed shaft 102 having an endless spiral groove is rotatably supported on the support frame 91,
Power from the seedling take-out device 1 side can be transmitted to the lateral feed shaft 102, and a lateral feed mechanism 103 for laterally feeding the movable frame 92 is provided between the lateral feed shaft 102 and the movable frame 92. The horizontal feed mechanism 103 enables the movable frame 92 to reciprocate horizontally in the left-right direction over substantially the entire width of the seedling tray 2.

A horizontal shaft 94 is rotatably attached to the lower part of the movable frame 92. A pair of left and right vertical feed wheels 95 are provided on the horizontal shaft 94 via a one-way clutch. A chain 97 is hooked over the driven wheel 96 provided on the upper portion of the movable frame 92, and a transport pin 98 that engages with the gap between the pot portions 3 in the vertical direction is attached to the chain 97. ing.

Between the horizontal feed shaft 102 and the horizontal shaft 94, when the laterally fed movable frame 92 reaches the end of its horizontal movement, it corresponds to one pot pitch between the seedling trays 2. Intermittent feed means 99 for intermittently moving the chain 97 through the vertical feed wheel 95 by a distance is provided, and the vertical feed wheel 95, the chain 97, the transport pin 98, the intermittent feed means 99 and the like feed the seedling tray 2 laterally. An intermittent vertical feed mechanism 100 that vertically feeds one pitch later is configured.

15 to 17 show an embodiment in which the transplanter for carrying out the above-mentioned method of the present invention is of a walking type, and the basic structure is common to the contents already described with reference to FIGS. 1 to 14. Common parts are denoted by common reference numerals, and differences will be described below. The traveling vehicle 22 has four wheels with two axles and two front wheels.
8 is a steering wheel, and the rear wheel 29 is a drive wheel.
A pair of left and right transmission cases 29A for 9 are drive shafts 29B.
By being able to swing around, the vehicle height can be adjusted according to the height of the ridge U.

The mission case 2 is mounted on the vehicle body frame 24.
4A, a movable frame 41 is provided on both sides of the transmission case 24A via a horizontal shaft 40, and a planting cylinder 43 is supported on the movable frame 41 via a swing link mechanism 42. The drive shaft 29B is provided in the mission case 24A.
Engine power is branched to the PTO shaft 44 and
The driving force of the seedling take-out nail and the driving force of the transport device 34 are transmitted to the O-axis 44 via the joint shaft 44A.

Main frame 3 from mission case 24A
3 extends rearward and has a steering handle 33A at the rear portion of the main frame 33. The handle 33A has a substantially rectangular frame shape in a plan view and a support plate 93 which is a seedling tray support for the transport device 34. The transverse feed shaft 102 allows intermittent movement. A pitch changing means 103A for varying the lateral feed pitch is provided in the middle of the transmission system including the lateral feed mechanism 103, and the means 103A is normally used for the lateral feed shaft 10.
In the present embodiment, the second end is provided in the vicinity of the driving means 103B of the seedling take-out claw, so that the front-rear weight balance is improved as much as possible because it is a walking type.

The pitch changing means 103A is of the shift gear type and can be shifted by remote control from the handle 33A. Parallel quadruple swing link mechanism 4
The planting cylinder 43, which is movably supported vertically by 2, has an opener 43A that can be opened and closed at the bottom, and the seedlings 5 are laid on the mulch film F by moving along the locus T shown in FIG. It is portable to U.

Seedling soil 5 sent by the seedling picking nail 4
When dropping from above the planting cylinder 43, drop the seedling soil 5 in a state where the seedling soil 5 is positioned in the upper part of the planting barrel 43, that is, the seedling soil 5 and the planting barrel 43 overlap each other in the vertical direction. The nail movement and the planting cylinder 4
The seedlings 5 can be surely dropped even if there is a slight timing difference with the exercise of 3.

Furthermore, the dropping position of the seedling 5 is the locus T.
By setting T2 just before reaching the top dead center T1,
The seedling soil 5 received by utilizing the upward movement of the planting cylinder 43 from T2 to T1 can be smoothly slid while vibrating.

[0061]

As described in detail above, according to the method of the present invention,
Regardless of the size of the seedling tray, the seedling take-out claws are inserted into the soil-grown seedlings based on the opening edge of the pot section, so there is no need to pierce or break the leaves of the seedling soil. At the time of detaching, since it is pulled out substantially in parallel with the axial direction of the pot portion, there is an effect that the seedling soil can be detached without being excessively compressed in the pot portion and without losing its shape.

[Brief description of drawings]

FIG. 1 is a cross-sectional side view of a transplanter used in the method of the present invention immediately before seedling removal.

FIG. 2 is a sectional side view immediately after taking out the seedlings.

FIG. 3 is a sectional side view immediately before leaving the seedling.

FIG. 4 is a cross-sectional side view immediately after the seedling is detached.

FIG. 5 is a side view showing a relationship between a seedling take-out device and a carrying device.

FIG. 6 is a cross-sectional side view of the main part of the seedling take-out device when the seedling is pierced.

FIG. 7 is a cross-sectional side view of the main part of the seedling take-out device when the seedling is removed.

FIG. 8 is a sectional side view of a main part of the seedling take-out device before the seedling is pierced.

FIG. 9 is a cross-sectional plan view of the main part of the seedling take-out device when the seedling is pierced.

FIG. 10 is a rear view of the main part of the seedling take-out device.

FIG. 11 is a perspective view of a separation guide body.

FIG. 12 is an overall side view of the transplanter.

FIG. 13 is an overall plan view of the transplanter.

FIG. 14 is an overall side view of the implanting device.

FIG. 15 is a plan view of the ambulatory implanter used in the method of the present invention.

FIG. 16 is a side view of the same.

FIG. 17 is likewise a side view of the main part.

[Explanation of symbols]

 1 Seedling take-out device 2 Seedling tray 3 Pot part 4 Seedling take-out claw 5 Seedling soil 6 Claw guide 8 Claw support 9 Holding body 10 Claw operating mechanism 11 Guide part 12 Return interlocking means 13 Guarantee means 14 Support frame 15 Release guide 21 Transplant Machine 34 Transport device 35 Planting device 43 Planting cylinder

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akio Hamada 64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd. (72) Masayuki Harada, 64, Ishizukitamachi, Sakai City, Osaka Prefecture Kubota Sakai Manufacturing Co., Ltd. In-house

Claims (4)

[Claims] 1. A seedling take-out position for taking out the soil-grown seedlings (5) from the pot section (3) of the seedling tray (2) and dropping the soil-grown seedlings (5) into the planting device (35) from above. A method for picking up and distributing soiled seedlings of a transplanter for reciprocally moving a seedling picking nail (4) between a seedling feeding position and a pot section (3) regardless of the size of the seedling tray (2). A method for picking up and distributing soiled seedlings in a transplanting machine, characterized in that the seedling picking nail (4) is thrust into the soiled seedling (5) based on the opening edge. 2. When plunging the seedling take-out nail (4) into the soil-grown seedling (5), the seedling take-out nail (4) is slanted in the depth direction of the pot portion (3), and then the seedling take-out nail (4) is put into the pot portion (3). The method for removing and distributing soil-grown seedlings in a transplanter according to claim 1, wherein the soil-grown seedlings (5) are detached from the pot portion (3) by pulling out the soil-grown seedlings (5) substantially parallel to the axial direction. 3. A seedling take-out position for taking out the soil-grown seedlings (5) from the pot section (3) of the seedling tray (2) and dropping the soil-grown seedlings (5) into the planting device (35) from above. A method for distributing soiled seedlings of a transplanter, which reciprocally moves a seedling extraction nail (4) between a seedling supply position, wherein when the seedling extraction nail (4) is thrust into the soil seedling (5), The guide part (11) of the seedling take-out nail (4) was pushed in while being pressed against the opening edge of the pot part (3), and the guide part (11) was pressed against the shoulder part of the soil-grown seedling (5). A method for picking up and sending soiled seedlings from a transplanter, which is characterized in that the seeds are sent in the state. 4. The soil seedling (5) in the upper part of the planting cylinder (43) in the planting device (35) when the soil seedling (5) is dropped into the planting device (35) from above. The method for removing / separating soiled seedlings from a transplanter according to any one of claims 1 to 3, characterized in that the seedlings are dropped in a state where they are positioned.