JP3416399B2 - Transplanting method and device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transplanting method and a device for sequentially transplanting vegetable seedlings such as lettuce and cabbage into ridges while running.

[0002]

[Prior art] Pot seedlings for vegetables (soil block seedlings)
Japanese Patent Application Laid-Open No. 7-2843 discloses a transplant device for a field for transplanting
As disclosed in Japanese Patent No. 12 publication, a traveling machine body having wheels on both left and right sides to travel across a ridge, and a planting device having a planting tube that moves up and down to plant seedlings in the ridge, There is one equipped with a seedling supply device for supplying seedlings to the planting device, and while running the traveling machine body across the ridges, a substantially elliptical orbit Ka which is vertically long in the planting cylinder of the planting device (Fig. 3a). (Illustrated in)
The planting cylinder is made to exercise, and the planting cylinder is made to plunge into the ridge at the lower part of the track on the front side to release the seedlings stored inside, and to come out on the rear side.

Since the planting cylinder moves forward while the orbital motion is made by the traveling of the traveling machine body, the disengagement position with respect to the ridge approaches the plunge position and is substantially perpendicular to the ridge (the disengagement position is substantially the same position as the plunge position). ), The transplant operation can be performed without damaging the ridges and the transplanted seedlings.

[0004]

However, in the above-mentioned prior art, when the stock spacing is changed significantly, for example,
When the distance between the stocks is changed to be shorter, the forward speed of the traveling vehicle becomes slower and the length of the planting cylinder becomes shorter in the front-rear direction, so that the detached position with respect to the ridge becomes farther backward than the plunged position (see FIG. 3b). The track Kb) and the ridges shown may be damaged and the running resistance may increase.

In order to solve this problem, the links and crank arms of the link mechanism for making the planting cylinder draw a substantially elliptical orbit are replaced with those of different lengths, which is very complicated and inefficient in work. In addition, it is necessary to easily use a different link mechanism, which results in high cost. In addition, it is more suitable for planting seedlings to draw an elliptical trajectory than to draw a vertical straight trajectory because the planting cylinder moves forward, but to move it almost vertically in the ridge, the residence time in the ridge
It is necessary to lengthen (because the forward movement distance during the staying time becomes longer), so if the movement speed of the planting cylinder over the entire track is slowed, the planting timing cannot be taken, and if it is faster, the staying time becomes shorter. This creates a dilemma.

According to the present invention, by making the moving speed in the ridge during the substantially elliptical orbital motion of the planting cylinder slower than the moving speed outside the ridge, the residence time in the ridge of the planting cylinder is lengthened. It is an object of the present invention to provide a transplantation method and device in which a detached position with respect to a ridge is brought closer to a plunge position. The present invention, by making the moving speed in the ridge during the substantially elliptical orbital motion of the planting cylinder different from the moving speed outside the ridge and enabling the speed change, the staying in the ridge of the planting cylinder. An object of the present invention is to provide an implantation method and device in which the time is adjusted so that the detached position with respect to the ridge can be brought closer to the plunge position.

[0007]

The first specific means for solving the problems in the method of the present invention is to move the traveling machine body 2 across the ridges 5 while moving the traveling cylinder 2 of the planting device 35 up and down. To make a long elliptical orbital motion, and move the planting cylinder 41 into an orbit K
In the transplantation method of rushing into the ridges 5 at the lower part and releasing the seedlings stored inside, during the orbital movement of the planting cylinder 41 in order to bring the detaching position of the planting cylinder 41 to the ridge close to the rushing position.
In this case, the average moving speed from the time when the planting cylinder 41 plunges into the ridge 5 to the time when it emerges is slower than the moving speed between the ridge 5 and the upper part of the track K.

As a result, the residence time of the planting cylinder 41 in the ridge 5 becomes longer, and the detached position from the ridge 5 becomes closer to the plunge position. Second for solving problems in the method of the present invention
The concrete means of the above is to make the planting cylinder 41 of the planting device 35 make a vertical elliptical orbital motion while running the traveling machine body 2 across the ridges 5 and to make the planting cylinder 41 below the ridge K. In the transplantation method in which the seedlings housed inside are rushed into 5 to release the seedlings stored inside , the planting cylinder 4 is moved during the orbital movement of the planting cylinder 41 in order to bring the detaching position of the planting cylinder 41 to the ridge closer to the plunge position.
That is, the average moving speed from the time when 1 enters the ridge 5 to the time when the ridge 5 emerges is made different from the moving speed between the ridge 5 and the upper part of the track K and the speed can be changed.

As a result, the planting cylinder 41 has a long residence time in the ridges 5, the position where it is detached from the ridges 5 is closer to the rush position, and the residence time can be adjusted. Planting is possible. The third concrete means for solving the problems in the method of the present invention is the first or second means.
In addition to the above concrete means, the orbital motion is stopped for a required time when the planting cylinder 41 penetrates into the ridge 5 and reaches the substantially lower end of the orbit K.

As a result, the planting cylinder 41 only stops at the substantially lower end of the track K, and the residence time in the ridge 5 becomes long,
The detached position is displaced so as to approach the inrush position. The fourth concrete means for solving the problem in the method of the present invention is the first
In addition to the specific means of or,
Decelerating within the ridge 5 and increasing speed outside the ridge 5.

As a result, the planting cylinder 41 is only decelerated in the ridge 5, the staying time in the ridge 5 becomes long, and the detached position is displaced so as to approach the plunge position. The first concrete means for solving the problem in the device of the present invention is to arrange the planting device 35 in the traveling machine body 2 traveling across the ridges 5, and to move vertically to the planting device 35 via the link mechanism 42. Is provided with a planting cylinder 41 that draws a long substantially elliptical orbit K, and a link mechanism 42
Orbital movement of the planting cylinder 41 through the ridge 5
In the transplantation device provided with a drive mechanism 37 for rushing into the chamber and releasing the seedlings stored inside, the drive mechanism 37
In addition, move the detaching position of the planting cylinder 41 from the ridge closer to the plunging position
In order to achieve this, a movement delay means is provided to make the average moving speed from the time when the planting cylinder 41 plunges into the ridge 5 to the time when it emerges from the moving speed between the ridge 5 and the upper part of the track K. Is.

As a result, the movement delay means of the drive mechanism 37 prolongs the residence time of the planting cylinder 41 in the ridge 5 and brings the detached position from the ridge 5 closer to the plunge position. The second concrete means for solving the problem in the device of the present invention is, in addition to the first concrete means of the device, the movement delay means, when the implanting cylinder 41 reaches the substantially lower end of the trajectory K, An electromagnetic clutch 54 for stopping the movement for a required time, an eccentric sprocket 55 with an adjustable eccentricity of a chain transmission means for transmitting the power of the orbital motion to the planting cylinder 41, or a variable motor 59 for giving the power of the orbital motion to the planting cylinder 41. Is either.

As a result, the shape of the lower part of the movement trajectory K is deformed with a simple structure, and the residence time of the planting cylinder 41 in the ridge 5 is adjusted.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1, 7 and 8, a vegetable transplanter 1 is a walking type having a transplanting device 3 and a steering handle 4 on a rear upper portion of a traveling machine body 2, and runs along a longitudinal direction while straddling a ridge 5 and traveling along a soil. Block seedlings are planted in the ridges 5 at predetermined intervals in the longitudinal direction.

The advancing direction of the transplanter 1 is called the front-back direction, and the lateral direction orthogonal to the advancing direction is called the left-right direction. The traveling machine body 2 has a pedestal 7 fixed to the front part of the transmission case 6 in a forwardly projecting manner, and an engine 8 and the like are mounted on the pedestal 7, and is mainly configured by front wheels 9 and rear wheels 10 provided on both left and right sides. It is supported so that it can run.

The power of the engine 8 is input to a power transmission mechanism in the mission case 6, and the power input in the mission case 6 is transmitted to a wheel transmission shaft 11 protruding to the left and right sides via a speed change mechanism or the like. At the same time, it can be taken out from the PTO shaft 12 that is provided behind the wheel transmission shaft 11 and projects to the left and right. A support cylinder 15 arranged in the left-right direction is fixed to a front wheel support frame 14 fixed to the front part of the gantry 7, and a pair of left and right front wheel support shafts 16 is rotatably inserted through the support cylinder 15, and the left and right parts are An upper end side of a support arm 18 is connected to the front wheel support shaft 16 via a mounting cylinder 17, and a front wheel 9 is pivotally supported on a lower end side of each support arm 18. 19 is supported by the front wheel support frame 14 and the ridge 5
It is a guide wheel that abuts on the upper part of the side surface.

Transmission cases 21 are mounted on the left and right sides of the transmission case 6 via support cylinders 20 on which wheel transmission shafts 11 are fitted.
The upper part of the case is rotatably supported.
A rear wheel 10 is rotatably supported on the lower part of the shaft 1 so that the position thereof can be adjusted in the left-right direction. An elevating cylinder 23 is provided at the front-rear intermediate portion of the gantry 7.
A cylindrical body 22 that is moved back and forth is supported by the movable body 24. The movable shaft 24 is inserted into the cylindrical body 22 in a protruding manner on both left and right sides. The left and right protruding portions of the movable shaft 24 are supported by the front connecting rod 27 by the front wheel support shaft 16 And the rear connecting rod 28 is interlocked with the transmission case 21.

A lift control valve 32 for controlling the lift cylinder 23 is provided on the mission case 6. A rolling cylinder 29 is mounted on the cylindrical body 22, and the rolling cylinder 29 is pivotally connected to a movable shaft 24 to move the left and right front wheels 9 and 10 up and down with respect to the right and front wheels 9 and 10. Horizontally controls the traveling body 2. The transplanting device 3 is provided in the transplanting frame 34 mounted on the rear part of the traveling machine body 2, and the transplanting device 3 for planting seedlings in the ridges 5
5, and a seedling supply device 36 for supplying seedlings to the planting device 35
And a perforation means 38 for forming a hole for planting in the mulch film covering the ridge 5.

The transplantation frame 34 includes a pair of left and right main frame members 34A whose front portions are fixed to the rear portion of the mission case 6 and a connecting member 39B which connects the rear end sides of the main frame members 34A to each other. The steering handle 4 extends rearward and is integrally fixed to the rear portion of the transplantation frame 34. The planting device 35 includes a planting cylinder 41 for planting seedlings in the ridges 5, a link mechanism 42 that supports the planting cylinder 41 so as to be vertically swingable (movable in a vertically long elliptical orbit), and a mission case 6 And a drive mechanism 37 for transmitting the power from the link mechanism 42 to the link mechanism 42 to move the planting cylinder 41 in a substantially elliptical locus.

The link mechanism 42 includes the transplantation frame 34.
A first parallel link 43 pivotally supported by a bracket 40 so as to swing back and forth; a swing plate 44 pivotally connected to the lower end of the first parallel link 43; The second parallel link 45 has a front portion pivotally connected so as to swing, and the planting cylinder 41 is pivotally connected to the rear end portion of the second parallel link 45.

The upper side link of the second parallel link 45 is pivotally connected to a crank arm 47a fixed to a lateral drive shaft 47 pivotally supported by a support piece 46 projecting downward from the implant frame 34. The drive mechanism 37 has the drive shaft 47 and the crank arm 47a, and also has a PTO.
Sprocket 48 for transmitting power from the shaft 12 to the drive shaft 47
A first winding transmission means (chain transmission means) 48 composed of A, 48B and a chain 48C is provided, and a drive shaft 47 is shown in FIG.
Rotate in the direction indicated by arrow B.

In the first embodiment shown in FIGS. 1 to 3, the drive mechanism 37 includes the PTO shaft 12 and the first winding transmission means 48.
Sprocket 48B provided on the drive shaft 47 for transmitting power to the second winding transmission means 69.
Has two chains wrapped around it, and the PTO shaft 12
The electromagnetic clutch 54 is interposed between the sprocket 48A and the sprocket 48A so that power transmission from the PTO shaft 12 to the sprocket 48A can be cut off for a set time.

53 is a support piece 46 (or the implant frame 3)
4) is a sensor attached to the crank arm 47a
It is detected that the planting cylinder 41 has reached the lower end of the locus K in contact with. The sensor 53 may be a non-contact sensor as well as a contact sensor. The electromagnetic clutch 54 is turned off by the operation of the sensor 53. By the way, when power is constantly transmitted with the electromagnetic clutch 54 in the contact state, the locus of movement of the planting cylinder 41 by the link mechanism 42 becomes a substantially elliptical locus Ka that is long vertically and short front and back, as shown in FIG. 3a. Since the forward movement of the traveling vehicle body 2 is added thereto, as shown in FIG. 3b, a trajectory Kb that draws a continuous arc is formed, and the ridge 5 enters the ridge 5 on the front side, reverses at the position of the set depth, and exits on the rear side. When the distance between the stocks is increased and the forward speed of the traveling vehicle body 2 is increased, the forward traveling distance of the traveling vehicle body 2 while the planting cylinder 41 is in the ridge 5 is increased, and thus the detached position of the planting cylinder 41 is increased. Will approach the plunge position and will make an ideal trajectory movement.

However, when the inter-plant distance is short, the detachment position is separated from the plunge position, and in this case, when the planting cylinder 41 comes to the lower part of the locus (preferably the lowermost end), the sensor 53 is placed.
When this is detected and the electromagnetic clutch 54 is disengaged for the time t, the planting cylinder 41 only moves forward for the time t, and the movement locus becomes as shown in FIG. The average moving speed during the period up to is decreased by the amount of the stop time provided, and is lower than the moving speed from the top of the ridge 5 to the upper part of the movement trajectory (the moving speed when the planting cylinder 41 enters and leaves is also substantially the same). Make a locus motion that slows down.

Therefore, the disengagement stroke of the planting cylinder 41 is displaced to a position close to the plunge stroke, and the planting cylinder 41 moves along the locus Kc which is almost vertical, pushing the soil of the ridge 5 backward. Planting is done in a proper posture without much movement, damage to the ridges 5 is reduced, and the released block seedlings are not pushed. The stop time t of the electromagnetic clutch 54 is adjustable, and is set so that the planting cylinder 41 moves as vertically as possible according to the size of the stock distance. The electromagnetic clutch 54 may be provided between the drive shaft 47 and the sprocket 48B.

In the second embodiment shown in FIGS. 3 to 5, the drive mechanism 37 includes an eccentric sprocket 55 (first winding transmission) in addition to the sprocket 48B for transmitting power to the drive shaft 47 to the second winding transmission means 69. (Means 48 is provided), and the chain 48C is wound around the eccentric sprocket 55, and the tension roller 56 absorbs the slack of the chain 48C.

The eccentric sprocket 55 has an eccentric cam 57 between itself and the drive shaft 47. By rotating the eccentric cam 57 with respect to the eccentric sprocket 55 and the drive shaft 47, the eccentric sprocket 55 with respect to the drive shaft 47. The eccentricity amount m and the eccentric direction can be changed. When changing only the amount of eccentricity m, the eccentric sprocket 5 for the chain 48C is used.
Also adjust the meshing position of 5.

The power transmitted from the sprocket 48A to the eccentric sprocket 55 is decelerated at a position far from the drive shaft 47 on the outer periphery of the eccentric sprocket 55, and is accelerated at a position near the eccentric sprocket 55. Even if the movement trajectory of the planting cylinder 41 by the link mechanism 42 is the same, the moving speed is increased or decreased. Therefore, by setting the deceleration region between the time when the planting cylinder 41 plunges into the ridge 5 and the time when the planting cylinder 41 separates, and by setting the speed increasing region between the time when the planting cylinder 41 separates and rushes into the ridge 5 The average moving speed from the time of moving to the time of leaving is slower than the moving speed when moving outside the ridge 5, and the movement trajectory Kd of the planting cylinder 41 is shown in FIG.
It becomes the state of.

By changing the eccentric direction of the eccentric sprocket 55 with respect to the drive shaft 47, the moving speed of the planting cylinder 41 in the ridge 5 can be increased. The eccentric sprocket 55 can also be provided on the PTO shaft 12. In the third embodiment shown in FIGS. 3 and 6, the drive mechanism 37 loosely fits a sprocket 48B for transmitting power from the PTO shaft 12 to the second winding transmission means 69 on the drive shaft 47 to drive a separate sprocket 58. It is fixed to the shaft 47, and the transplantation frame 34 is provided with a variable motor 59.
The sprocket 58 is driven via the.

Since the variable motor 59 moves the locus of the planting cylinder 41 through the link mechanism 42, the locus of movement of the planting cylinder 41 can be variously set by changing the rotation speed thereof. As shown in 3e, it becomes possible to draw a locus in which the lower part of a substantially elliptical locus that is long in the vertical direction is thin. When the planting cylinder 41 is moved along the locus Ke shown in FIG. 3e, the planting cylinder 41 approaches the ridge 5 at a relatively high moving speed, and suddenly decelerates after the plunge into the ridge 5 is started and then slow deceleration. In the state, it goes to the lower end of the locus, reverses, and is escaping from the ridge 5 while accelerating, and the average moving speed from the start of the entry of the planting cylinder 41 to the completion of the removal is the movement from the top of the ridge 5 to the upper part of the movement locus. Slower than speed.

The movement locus of the planting cylinder 41 can be changed by the variable motor 59 as shown in FIGS. 3c and 3d, and even when the stock distance is increased,
It can be used to make the speed of movement in the ridge 5 faster than the speed of movement outside, in order to optimize the movement trajectory. The second,
In the eccentric sprocket 55, the variable motor 59, etc. in the third embodiment, the average moving speed until the planting cylinder 41 thrusts into the ridge 5 and comes out (during the planting operation) is as follows: The moving speed can be slower than the moving speed during the period (outside the ridge operation), and in that case, the electromagnetic clutch 5 in the first embodiment can be used.
As in the case of 4, the movement delay means is configured.

In the planting mechanism 35, the drive mechanism 37 or an electromagnetic clutch for power connection / disconnection is provided in front of it, and when the planting cylinder 41 reaches the upper part of the locus K, its movement is stopped,
The stock interval can be set variously by adjusting the stop time, and the moving speed during the extra-ridge movement is the speed when the upper position stop time is not included.

The seedling feeding device 36 is arranged at the upper rear portion of the transplantation frame 34, and a seedling tray feeding mechanism 67 for intermittently feeding vertically and horizontally a seedling tray 66 containing a large number of soil block seedlings vertically and horizontally, and this seedling tray. It has a seedling distribution mechanism 68 which is arranged on the front side of the feeding mechanism 67 and takes out the seedlings one by one from the seedling tray 66 and supplies them to the planting cylinder 41.

The seedling tray 66 is made of plastic, is thin and has flexibility, and is provided with a large number of pot portions 66a arranged in a grid pattern at a predetermined pitch vertically and horizontally, and all pot portions 66a are soiled. Block seedlings are being raised. The seedling feeding mechanism 68 includes a swing motion mechanism 70 in which power is transmitted from the drive shaft 47 through the second winding transmission means 69, and the swing motion mechanism 70 is supported and fixed to the transplantation frame 34. , And has a seedling extraction nail 71.

Then, by the operation of the swing motion mechanism 70,
The seedling take-out claw 71 pierces the lower part of the block soil in the pot portion 66a from a diagonally forward direction, moves forward while slightly moving upward, pulls out the seedlings from the pot portion 66a, and thereafter puts the seedlings in a substantially vertical posture. The robot moves downward while changing its posture, releases seedlings at the lower end position of the movement locus thereof, drops and supplies them to the planting cylinder 41 located at the upper end of the movement locus of the planting cylinder, and then reciprocates so as to return to the original position.

As shown in FIGS. 1, 7, and 9, the seedling tray feeding device 67 includes a guide rail 73 fixed to the transplantation frame 34 and the handle 4, and the seedling tray 66 is movably mounted on the guide rail 73 in the left-right direction. Movable frame 7 loaded with
It is equipped with 4. The movable frame 74 is configured to be intermittently reciprocated in the left-right direction, and the seedlings are taken out while the movable frame 74 moves in the left-right direction. In addition, the movable frame 74 is provided with a vertical feed mechanism that vertically feeds the seedling trays 66, and when the seedlings have been taken out of the pots 66a arranged in a row, the seedling trays 66 are moved vertically to the pots 66a. 1
It is designed to be sent by the pitch.

The left and right side plates 76 of the movable frame 74 are provided with a support plate 75 for supporting the bottom of the seedling tray 66 across the pots 66a arranged in a row in the middle of the vertical direction, and a vertical feed drive shaft 77 is supported at the bottom. The vertical feed driven shaft 78 is disposed in the left-right direction at the upper part. Vertical feed drive shaft 77
A pair of left and right drive sprockets 79 are fixed to the driven shaft 78, and a pair of left and right driven sprockets 80 are fixed to the driven shaft 78. Further, an endless chain 81 is hung between the drive sprocket 79 and the driven sprocket 80, and a transport pin 82 that engages with a gap between the pot portions 66a in the vertical direction is attached to the chain 81. The vertical feed drive shaft 77 rotates in the direction indicated by the arrow A in FIG. 7 so that the seedling tray 66 can be vertically fed.

The carrying pin 82 is connected to the pot portion 66.
Pot portions 66a of several seedling trays 66 with different intervals of a
It is provided at a position matching the pitch between them or the mounting position can be changed. The left and right support members 83 fixed to the handle 4 on both the left and right sides of the movable frame 74 rotatably support a lateral feed shaft 84 that penetrates the left and right side plates 76 and has an endless spiral groove. A slider 85 having an engaging member that engages with the spiral groove is externally fitted to 84, and the slider 85 is connected to the movable frame 74.

Power from the seedling feeding device 68 is transmitted to the lateral feed shaft 84 via the third winding transmission means 86 to the power transmission means 87 in the right side support member 83, and this power transmission means 87. As a result, the lateral feed shaft 84 is intermittently driven to rotate, and the intermittent rotation drive causes the slider 85 to move left and right, whereby the movable frame 74 is intermittently reciprocated in the left-right direction.

As shown in FIGS. 9 and 10, vertical feed cams 88 are fixed on the left and right sides of the horizontal feed shaft 84, and a vertical feed actuating shaft 89 is rotatably supported on the movable frame 74 between the left and right side plates 76. The vertical feed operation shaft 89 is provided with a pair of left and right cam followers 90 and 91 that engage with the vertical feed cam 88 when the movable frame 74 moves to the leftmost end or the rightmost end.

Both the cam followers 90 and 91 can be engaged with the vertical feed cam 88, but the main cam follower 90 is fixed to the vertical feed operating shaft 89, while the auxiliary cam follower 91 is operated vertically. It is supported so as to be rotatable relative to the shaft 89. Further, the auxiliary cam follower 91 is elastically connected to the main cam follower 90 around the axis via a helical spring 92 wound around the vertical feed operation shaft 89.

The first link 93A is fixed to the protruding portion of the vertical feed operation shaft 89 protruding from the side plate 76, and the first link 9A is fixed.
3A is connected to a lock release lever 94 having an engagement pin 94a via a second link 93B. The lock release lever 94 is fixed to a one-way clutch 95 provided on the vertical feed drive shaft 77, a tension coil spring 98 is engaged with the arm portion 94b, and the lock release lever 94 moves in the direction A shown in FIG. It is biased to rotate.

The vertical feed drive shaft 77 has engaging teeth 96.
a, 97a with first and second longitudinal feed gears 96, 97
Is rotatably supported relative to each other, and both longitudinal feed gears 96 and 97 are interlocked so as not to rotate relative to each other. The second vertical feed gear 97 can be connected to and disconnected from the vertical feed drive shaft 77 by a clutch device (not shown), and the first and second vertical feed gears 96 and 97 are vertically moved by connecting and disconnecting the clutch device. It can rotate relative to or integrally with the feed drive shaft 77. Further, the first and second vertical feed gears 96 and 97 are interlocked and coupled with the one-way clutch 95 so as to rotate together only in the vertical feed direction (direction indicated by arrow A) (thus, the reverse direction idles. ).

The clutch device adjusts the position of the transport pin 82, and the seedling tray feeding mechanism 67 to the seedling tray 66.
Is forcibly pulled out, the drive shaft 77 is cut so as to be free. The engaging teeth 96a of the first vertical feed gear 96 and the engaging teeth 97a of the second vertical feed gear 97 are formed at different pitches. On the front upper side of the first and second vertical feed gears 96 and 97, first and second ratchet arms 99 for restricting rotation corresponding to these are provided.
100 is arranged and the corresponding longitudinal feed gears 96, 9 are provided.
7 engaging teeth 96a, 97a engaging portion 99a, 1
Support shaft 75 provided on the support plate 75
And is biased by tension coil springs 102 and 103 to engage the engaging teeth 96a and 97a, respectively.

Further, each ratchet arm 99, 100 is formed with a notch-shaped engagement surface 99b, 100b which engages with the engagement pin 95a of the lock release lever 94, so that the lock release lever 94 can be rotated. The engagement surfaces 99b and 100b are pushed up to release the engagement between the ratchet arms 99 and 100 and the vertical feed gears 96 and 97. A selection member 104 is provided in the vicinity of the both ratchet arms 99 and 100. The selection member 104 selects one of the two ratchet arms 99 and 100 to engage the selected ratchet arm. 99a, 1
00a is engaged with the corresponding engaging teeth 96a, 97a of the longitudinal feed gears 96, 97, and the other ratchet arm 99, 100 is pushed upward against the tension coil springs 102, 103 to engage the engaging teeth. It does not engage with 96a and 97a. In addition, in FIG.
The state where the first ratchet arm 99 is pushed up by the selection member 104 and the engaging portion 100a of the second ratchet arm 100 is brought into the engaging tooth 97a of the second vertical feed gear 97 is shown.

The operation of the intermittent vertical feed mechanism of the seedling tray 66 will be described with reference to FIGS. 9 and 10 in the above configuration. The horizontal feed shaft 84 is intermittently rotated in the arrow C direction to move the movable frame 74.
Is intermittently fed to the left and right, and the vertical feed cam 88 intermittently rotates in the arrow C direction together with the horizontal feed shaft 84. Then, when the movable frame 74 moves to the left and right ends, when the main cam follower 90 engages with the vertical feed cam 88 and is pushed in the direction of the arrow D, the vertical feed operating shaft 89 rotates, First link 93
The lock release lever 94 swings via A and the second link 93B, whereby the engagement pin 94a pushes up the engagement surface 100b of the second ratchet arm 100, and the engagement portion 100
a is disengaged from the engaging teeth 97a of the second vertical feed gear 97. At this time, the one-way clutch 95 idles and the first and second vertical feed gears 96 and 97 do not rotate.

Next, when the horizontal feed shaft 84 rotates, the push of the main cam follower 90 by the vertical feed cam 88 in the arrow C direction is released, and the lock release lever 94 is urged by the tension coil spring 98 to move the arrow A. Rotate in the direction to return to the original position,
At this time, the first and second vertical feed gears 96 and 97 are rotated together in the direction of arrow A through the one-way clutch 95, and the vertical feed drive shaft 77 rotates in the direction of arrow A.
The engaging portion 100a of the ratchet arm 100 engages with the engaging tooth 97a one pitch rear of the second vertical feed gear 97, and the rotation of the vertical feed drive shaft 77 is restricted.

As described above, the seedling tray 21 has the pot portion 2
1a is vertically fed by a distance corresponding to the vertical interval of 1a (1 pitch), then fed left and right, and when the removal of soil block seedlings from the horizontal row of pots 66a is completed, the seedling tray 66 is vertically moved to 1 Pitch sent. Also, the selection member 1
By switching the vertical feed gears 99 and 100 with 04, two kinds of seedling trays 21 can be supported.

By the way, in the vertical feed mechanism, if the tray feed pitch is changed, it becomes impossible to take out the seedlings from the seedling tray 66 by the seedling take-out pawls 71. Therefore, it is necessary to always feed the seedlings vertically in accordance with the tray pitch. At times, it is necessary to prevent deviation due to vibration or the like. Therefore, as shown in FIGS.
6, 97 troughs 96b, 97b engaging teeth 96a, 97a
Deeper valley recesses 96c and 97c are formed in the vicinity so that the engagement pin 95a pushes up the engagement surfaces 99b and 100b of the ratchet arms 99 and 100 at the final stage of the rotation of the lock release lever 94, and the ratchet arm 99, 100
The moving angle P of the engaging pin 95a for pushing up is set to be substantially equal to the top angle Q of the engaging teeth 96a, 97a.

As a result, the ratchet arms 99, 1 at the end of the rotation of the lock release lever 94 in the direction opposite to the arrow A direction.
The lock by 00 is promptly released, and the engaging portions 99a, 100a of the ratchet arms 99, 100 begin to descend at the beginning of the rotation of the lock release lever 94 in the direction of arrow A,
It abuts the troughs 96b and 97b, and further troughs 96c and 97
It descends to c and engages with the engaging teeth 96a and 97a. The engagement portions 99a and 100a are rapidly lowered and the valley recesses 96c and 9a are formed.
Even if the vertical feed gears 96 and 97 are selected and the tray pitch is changed, the rotation stop positions of the vertical feed gears 96 and 97 can be accurately set and stabilized because they engage with 7c. It is possible to reliably prevent the shift due to the vibration of the seedling tray 66.

As shown in FIGS. 1 and 7, the planting device 35 is used.
Behind and in front of the planting cylinder 41, the first and second detection rollers 49, 5 for grounding and rolling on the upper surface of the ridge 5 to detect the height of the ridge.
0 is provided, and it is possible to come into contact with the upper surface of the ridge and follow the unevenness thereof, and constitutes a part of the planting depth adjusting means 51, the sensitivity adjusting means 52 and the like. The present invention is not limited to the above-mentioned embodiment, but can be modified in various ways.
For example, although the transplanting machine 1 is shown as a self-propelled walking type, it may be a self-propelled riding type or a tractor mounting type, and the front part is pivotally supported on the traveling machine body 2 separately from the transplantation frame 34 having the seedling feeding device 36. It is also possible to provide a movable frame provided with the above-mentioned structure and to support the planting mechanism 35 on the movable frame. In addition, the rearward-facing second PT that branches off the power from the mission case 6 and the PTO shaft 12
Power may be transmitted to the seedling supply device 36 separately from the power transmission to the drive mechanism 37 by projecting the O shaft. In that case, the rotation speed of the PTO shaft 12 is made variable by a continuously variable transmission mechanism. Good.

[0052]

According to the present invention described in detail above, the planting cylinder 4
Since the average moving speed until 1 rushes into the ridge 5 and comes out is made slower than the moving speed between the ridge 5 and the upper part of the track K, the planting cylinder 41 has a residence time in the ridge 5. The length of the ridge 5 becomes longer, and the detached position from the ridge 5 becomes closer to the rush position, so that the seedlings can be reliably transplanted in a good condition, and the ridge 5 is not damaged or the running resistance is not increased.

Since the average moving speed until the planting cylinder 41 thrusts into the ridge 5 and comes out is made different from the moving speed between the ridge 5 and the upper portion of the track K, the speed can be changed. , The planting cylinder 41 can adjust the residence time in the ridges 5, and even if the spacing between the large stocks and small stocks is changed, the leaving position and the plunging position with respect to the ridges 5 are closer to each other, and the seedlings are in a good state. Can be reliably transplanted, and the ridges 5 are not damaged or running resistance is not increased.

When the planting cylinder 41 rushes into the ridge 5 and reaches the substantially lower end of the track K, the orbital motion is stopped for the required time. Therefore, the planting cylinder 41 only stops at the substantially lower end of the track K, and The residence time in the ridge 5 can be extended, and the separation position with respect to the ridge 5 can be displaced so as to approach the rush position. Since the orbital motion of the planting cylinder 41 is decelerated inside the ridge 5 and is accelerated outside the ridge 5, the planting cylinder 41 can only be decelerated inside the ridge 5 to increase the residence time in the ridge 5. , The disengagement position with respect to the ridge 5 can be displaced so as to approach the rush position.

The planting tube 41 is attached to the drive mechanism 37 which orbits the planting tube 41 via the link mechanism 42 and causes the seedling stored in the ridge 5 to be projected into the ridge 5 at the lower part of the track K. The average moving speed until it comes out to the
Since the movement delay means for slowing the movement speed between the upper part of the track K and the upper part of the track K is provided, the planting cylinder 4 is provided by this movement delay means.
1 can be retained in the ridge 5 for a longer time, the separation position with respect to the ridge 5 can be brought closer to the plunge position, the seedlings can be reliably transplanted in a good state, the ridges 5 can be damaged, and running resistance can be improved. It can be prevented from growing up.

In the movement delay means, the planting cylinder 41 has a track K.
Of the chain transmission means for transmitting the power of the orbital motion to the planting cylinder 41, or the eccentric sprocket 55 with adjustable eccentricity of the chain transmission means for transmitting the power of the orbital motion to the planting cylinder 41, or the orbiting to the planting cylinder 41. Since it is one of the variable motors 59 that gives power for movement, the lower part of the movement locus K can be deformed and the residence time in the ridge 5 of the planting cylinder 41 can be adjusted with a simple configuration.

[Brief description of drawings]

FIG. 1 is a side view of an implanting device showing an embodiment of the present invention.

FIG. 2 is a side view showing the first embodiment.

FIG. 3 is an explanatory diagram showing various movement trajectories of the planting cylinder.

FIG. 4 is a side view showing a second embodiment.

FIG. 5 is a side view showing a main part of the second embodiment.

FIG. 6 is a side view showing a third embodiment.

FIG. 7 is a side view showing the entire transplanter.

FIG. 8 is a plan view of the traveling machine body.

FIG. 9 is a sectional front view showing a seedling feeding device.

FIG. 10 is a side view showing a vertical feeding mechanism of the seedling feeding device.

FIG. 11 is a side view showing a main part of a vertical feed mechanism.

[Explanation of symbols]

2 traveling aircraft 5 ridges 12 PTO axis 34 transplantation frame 35 Planting device 36 Seedling supply device 37 Drive mechanism 41 Implanted cylinder 42 Link mechanism 47 drive shaft 54 Electromagnetic clutch 55 Eccentric sprocket 59 variable motor K movement trajectory

─────────────────────────────────────────────────── --- Continuation of front page (56) References JP-A-7-284312 (JP, A) JP-A-63-188309 (JP, A) Actual development Sho-56-86919 (JP, U) (58) Survey Field (Int.Cl. ⁷ , DB name) A01C 11/00-11/02 303 A01C 11/02 370-387

Claims (6)

(57) [Claims] 1. A planting cylinder (41) of a planting device (35) is caused to move vertically and substantially in a substantially elliptical orbit while the traveling machine body (2) is run across the ridges (5). In the transplantation method in which (41) is thrust into the ridge (5) at the lower part of the track (K) to release the seedlings stored inside, in order to bring the detaching position of the planting cylinder (41) to the ridge closer to the rush position, During the orbital motion of the planting cylinder (41), the average moving speed from the time when the planting cylinder (41) rushes into the ridge (5) to the time when the planting cylinder (41) comes out, the ridge (5) and the track (K) upper part A transplanting method characterized by being slower than the moving speed between and. 2. The planting cylinder (41) of the planting device (35) is caused to make an orbital motion of a long ellipse in the vertical direction while the traveling machine body (2) is traveling across the ridge (5). In the transplantation method in which (41) is thrust into the ridge (5) at the lower part of the track (K) to release the seedlings stored inside, in order to bring the detaching position of the planting cylinder (41) to the ridge closer to the rush position, During the orbital motion of the planting cylinder (41), the average moving speed from the time when the planting cylinder (41) rushes into the ridge (5) to the time when the planting cylinder (41) comes out, the ridge (5) and the track (K) upper part A transplantation method characterized in that the speed of movement is different and the speed can be changed. 3. The orbital motion is stopped for a required time when the planting cylinder (41) rushes into the ridge (5) and reaches substantially the lower end of the orbit (K). The described transplantation method. 4. The ridge (5) is used for orbital movement of the planting cylinder (41).
3. Implantation method according to claim 1 or 2, characterized in that it is decelerated inside and accelerated outside the ridge (5). 5. A planting device (35) is arranged on a traveling machine body (2) traveling across the ridge (5), and the planting device (3) is arranged.
5) is provided with a planting cylinder (41) that draws a vertically long elliptical orbit (K) through the link mechanism (42), and orbits to the planting cylinder (41) through the link mechanism (42). A transplantation device provided with a drive mechanism (37) that is moved to enter the ridge (5) at the lower part of the track (K) and release the seedlings stored therein, wherein the drive mechanism (37) has a planting cylinder. In order to bring the separating position of the ridge (41) from the ridge closer to the plunge position, the average moving speed from the time when the planting cylinder (41) plunges into the ridge (5) until it comes out is set to the ridge (5) and the orbit ( K) A transplantation device, characterized in that it is provided with a movement delay means for slowing the moving speed between the upper part and the upper part. 6. An electromagnetic clutch (54) for stopping the orbital movement for a required time when the planting cylinder (41) reaches a substantially lower end of the orbit (K), and the movement delay means orbits to the planting cylinder (41). It is characterized by being either an eccentric sprocket (55) capable of adjusting the eccentricity of a chain transmission means for transmitting motive power, or a variable motor (59) for giving orbital motive power to the planting cylinder (41). The implanting device according to claim 5.