JPH10164916A - Transplanting method and transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To almost double planting efficiency by simultaneously taking out two seedling pots from a seedling tray and planting them. SOLUTION: Two pairs of seedling take-out pawls 4 are respectively projected to two pot parts in one vertically and horizontally intermittentely movable seedling tray and pierced to the two seedling pots, the seedling take-out pawls 4 are withdrawn and the seedling pots are taken out. Both seedling take-out pawls 4 are moved to the upper part of two planting cylinders 6, the seedling pots 5 are delivered from both seedling take-out pawls 4 to the planting cylinders 6, the respective planting cylinders 6 are lowered and the seedling pots 5 are transplanted to a ridge N.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a transplanting method and a transplanting machine used for transplanting vegetables such as cabbage and lettuce.

[0002]

2. Description of the Related Art Vegetable transplanters for raising seedlings in seedling trays having pot portions in an arrangement of vertical and horizontal lattices, taking out seedling pots (earthed seedlings) from the pot portions and transplanting them are known. Is being mechanized. As disclosed in Japanese Patent Application Laid-Open No. Hei 8-214624, this type of vegetable transplanter has a main configuration in which a seedling tray is placed on a traveling machine body and is capable of intermittently moving vertically and horizontally. A seedling removal device that takes a seedling pot from a seedling tray on a seedling supply device and moves it to a required position, and receives a seedling pot from a seedling removal device to a planting tube at a required position, and lowers this planting tube and transplants it to a ridge. And a planting device.

[0003] A pair of seedling removal nails is inserted into and out of the seedling pot with two pieces from the opening side of the pot portion, so that the seedling pot is taken out from the opening of the pot portion, and the taken out seedling pot is planted. The seedling pot is transferred to the upper part of the planting tube of the apparatus, the seedling pot is detached from the seedling take-out nail, dropped and supplied to the planting tube, and the planting tube is lowered and pierced into the ridge to plant the seedling pot. I have. In the transplanting machine, the seedling removing device has only one pair of seedling removing claws, and the seedling pot can be removed from only one pot portion in one seedling tray by one operation. There is also one planting cylinder, and the seedling supply device has one intermittent feed in the pot section both vertically and horizontally.

[0004]

In the above prior art, the seedling pots are always taken out and planted one by one.
When planting efficiency is low and two rows are planted in one ridge, it can be carried out by offsetting the planting tube or the like from the center of the traveling machine to the left and right and reciprocating transplanting in one ridge.
It is difficult to set the planting positions of the streaks identically or staggered as appropriate.

[0005] An important object of the present invention is to provide a transplanting method in which two seedling pots are simultaneously taken out from a seedling tray and planted so that the planting efficiency can be approximately doubled. An object of the present invention is to take out two seedling pots from a seedling tray at the same time, plant them in two rows, and plant these two rows at the same position in the longitudinal direction of the ridge or at a shifted position, so that the two rows at the same position or staggered position are obtained. It is an object of the present invention to provide a transplanting method and a transplanting machine which can be used for planting.

[0006] An object of the present invention is to take out two seedling pots from a seedling tray at the same time, plant them in two rows, and plant these two rows at the same position in the longitudinal direction of the ridge or at a staggered position so that they are staggered. An object of the present invention is to provide a transplanting method and a transplanting machine which can perform double-row planting at a position. An object of the present invention is to provide a transplanter in which two seedling pots are simultaneously taken out from a seedling tray and planted at the same time in the longitudinal direction of the ridge so that the efficiency of single-row planting can be approximately doubled.

[0007] An object of the present invention is to provide a shoot means between a seedling removal claw and a planting tube so that a seedling pot can be reliably transferred from two pairs of seedling removal claws to two planting tubes. To provide a transplanter that has been developed.

[0008]

The first concrete means for solving the problem in the method of the present invention is that two pairs of pots 3 in one seedling tray 2 which can be intermittently moved vertically and horizontally are provided in two pairs. The seedling removal nails 4 are respectively inserted and pierced into two seedling pots 5, and the seedling removal nails 4 are withdrawn and the seedling pots 5 are taken out.
The two seedling extraction claws 4 are moved to above the two planting cylinders 6 and the seedling pots 5 are transferred from the both seedling extraction claws 4 to the planting cylinder 6.
And transplanting the seedling pot 5 into the ridge N.

Thus, the two pairs of seedling removal claws 4 simultaneously take out two seedling pots 5 from one seedling tray 2 and transfer them to two planting cylinders 6 in one operation. The two seedling pots 5 are transplanted to the ridge N by lowering the seedlings 6. A second specific means for solving the problem in the method of the present invention is, in addition to the first specific means, two planting cylinders 6 are located in a direction intersecting the longitudinal direction of the ridge N, In addition, the period of descent to the ridge N is the same or shifted.

[0010] Thus, the two seeding tubes 6 transplant the seedling pot 5 into two rows on the ridge N, and set the planting state at the same position or the staggered position in the longitudinal direction of the ridge N. The first concrete means for solving the problem in the device of the present invention is the traveling body 11
A seedling supply device 12 on which the seedling tray 2 is placed and which can be intermittently moved vertically and horizontally, and a seedling removal device 13 which takes out the seedling pot 5 from the seedling tray 2 on the seedling supply device 12 and moves to a required position.
And a planting device 14 for receiving the seedling pot 5 from the seedling take-out device 13 to the planting tube 6 at a required position, and lowering the planting tube 6 and transplanting it to the ridge N. 13 has two pairs of seedling removal claws 4 that simultaneously pierce the seedling pots 5 in the two pot portions 3 in one seedling tray 2, and the planting device 14 supplies the seedling pots 5 from each seedling removal nail 4. The seedling supply device 12 has two pairs of seedling removal claws 4.
In the arrangement direction, there is provided a feeding means for intermittently feeding the seedling tray 2 by two pot portions 3 and intermittently feeding the seedling tray 2 by one pot portion 3 in a direction orthogonal to the arrangement.

In this way, the two pairs of seedling take-out claws 4 simultaneously take out two seedling pots 5 from one seedling tray 2 and transfer them to two planting tubes 6 in one operation. 6, the two seedling pots 5 are transplanted to the ridge N, and the seedling supply device 12 sends the seedling tray 2 in the arrangement direction of the two pairs of seedling removal claws 4 at a distance corresponding to the two pot portions 3. To move.

A second aspect of the present invention for solving the problem in the apparatus is
A specific means is that, in addition to the first specific means, the two pairs of seedling removal claws 4 are located in a direction intersecting with or in the same direction as the longitudinal direction of the ridge N. Thus, two seedling pots 5 can be planted in two rows, or two seedlings 5 can be planted in one row.

[0013] A third aspect of the present invention for solving the problems in the apparatus is as follows.
The specific means is that, in addition to the first specific means, the two planting tubes 6 are located in a direction intersecting the longitudinal direction of the ridge N, and are provided in the transmission system of one of the planting tubes 6. Is ridge N to the other
Is provided with timing changing means 16 for shifting the descending cycle from the same state to the same state. As a result, the two planting cylinders 6 transplant the seedling pots 5 into two rows on the ridge N, and shift the planting state between the one seedling pot 5 and the same position in the longitudinal direction of the ridge N and the shifted position. Can be changed.

A fourth aspect of the present invention for solving the problems in the apparatus.
The concrete means is that, in addition to the first concrete means, the planting device 14 puts the seedling pots 5 released from the two pairs of seedling removal claws 4 above the two planting cylinders 6, respectively. That is, it has a chute means 15 for guiding to the attachment tube 6. by this,
The two seedling pots 5 are guided by the chute means 15 without fail depending on the distance between the two pairs of seedling extraction claws 4 and the two planting tubes 6 and the arrangement direction, and are reliably transferred to the planting tube 6. Can be delivered.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 11 show a first embodiment, and a transplanting machine 1 has a traveling body 1 as shown in FIG.
1 is a walking type having a transplanting device 10 and a control handle 20 in the upper rear portion, and while running in the longitudinal direction across the ridge N, the soil block-shaped seedling pots 5 are arranged on the ridge N at predetermined longitudinal intervals. And plant it.

The traveling direction (longitudinal direction of the ridge N) of the transplanter 1 is referred to as the front-rear direction, and the lateral direction (direction intersecting the longitudinal direction of the ridge N) perpendicular to the traveling direction is referred to as the left-right direction. The traveling body 11 has a gantry 22 fixed to a front portion of a transmission case 21 so as to protrude forward, and an engine 23 and the like are mounted on the gantry 22, and is mainly configured by a front wheel 24 and a rear wheel 25 provided on both left and right sides. It is supported so that it can run.

The power of the engine 23 is input to a power transmission mechanism in the transmission case 21 and transmitted to a wheel transmission shaft 26 projecting to the left and right sides via a transmission mechanism or the like. It can be taken out from a PTO shaft 27 provided at the rear. A support cylinder 2 arranged in the left-right direction is provided on a front wheel support frame 28 fixed to the front portion of the gantry 22.
9, a pair of left and right front wheel support shafts 30 are rotatably inserted into the support cylinder 29, and upper ends of support arms 31 are fitted and connected to the left and right front wheel support shafts 30, respectively. A front wheel 24 is pivotally supported at the lower end of the front wheel. Reference numeral 32 denotes a guide wheel that is supported by the front wheel support frame 28 and contacts the upper side of the ridge N.

A transmission case 35 is provided on both left and right sides of the transmission case 6 via a support cylinder 34 into which the wheel transmission shaft 26 is fitted.
Of the transmission case 3 is rotatably supported.
A rear wheel 25 is supported on the lower axle 5 so that the position in the left and right directions can be adjusted. A cylindrical body 37 that is moved back and forth by an elevating cylinder 36 is supported at a front and rear intermediate portion of the gantry 22,
A movable shaft 38 is inserted into the cylindrical body 37 in a protruding manner on both left and right sides. The left and right protruding portions of the movable shaft 38 are connected to the front wheel support shaft 30 by a front connection rod 39 and an arm, and a rear connection rod 40 and an arm With the transmission case 35, it is linked and connected.

An elevating control valve 42 for controlling the elevating cylinder 36 is provided on the transmission case 21.
By operating the control valve 42, the height of the traveling machine body 11 is controlled. A rolling cylinder 43 is mounted on the cylindrical body 37. The rolling cylinder 43 is pivotally connected to a movable shaft 38, and moves up and down the left and right front wheels 24 and 25 with respect to the right and left front wheels 24 and 25. Traveling aircraft 11
The horizontal control of

The transplanting device 10 is provided on a transplanting frame 45 which constitutes a rear portion of the traveling machine body 11, and is provided with a seedling tray 2.
Seedling supply device 12 which can be intermittently moved vertically and horizontally by placing the seedlings, seedling removal device 13 which takes out seedling pot 5 from seedling tray 2 on seedling supply device 12 and moves to a required position, And a planting device 14 for receiving the seedling 5 from the seedling removal device 13 to the planting tube 6 and descending the planting tube 6 and transplanting the planting tube 6 to the ridge N. Extend upward and rearward and are integrally fixed.

The planting device 14 is provided with a planting tube 6 for planting the seedling pots 5 in the ridges N, a link mechanism 47 for supporting the planting tube 6 so as to be able to swing up and down and back and forth, and receives power from the transmission case 21. And a drive mechanism 48 that transmits the planting tube 6 to the link mechanism 47 to move the planting tube 6 vertically in a substantially elliptical orbit, and these are paired left and right and arranged symmetrically. Each of the left and right link mechanisms 47 is pivotally connected to a first parallel link 49 pivotally supported by a left and right side of the transplant frame 45 via a bracket so as to swing back and forth, and a lower end of the first parallel link 49. And a second parallel link 50 whose front portion is pivotally connected so as to swing up and down via the swinging plate. The planting tube 6 is pivotally connected to the rear end of the second parallel link 50. .

The upper link of each of the left and right second parallel links 50 is pivotally connected to a crank arm 53, and the crank arm 53 is driven by a pair of left and right driving supports pivotally supported by a support piece 51 projecting downward from the transplant frame 45. It is fixed to a shaft 52. The left and right drive shafts 52 are arranged concentrically, and their opposite ends are supported by each other via bearings. The drive mechanism 48 has a drive shaft 52 and a crank arm 53, and has a pair of left and right chain transmission means 54 for transmitting power from the PTO shaft 27 to the drive shaft 52.

In FIG. 7, the power from the engine 23 is transmitted to a main shaft 57 via a main clutch 56, and is separated from the main shaft 57 into a traveling system and a PTO system. The power is transmitted to the counter shaft 59, transmitted from the sub shaft 59 to the wheel transmission shaft 26, and the PTO system is transmitted from the main shaft 57 to the PTO shaft 27 via the idler gear 60 on the sub shaft 59.

The power of the PTO shaft 27 is transmitted to a transmission PTO shaft 62 via a bevel gear 61 to drive the seedling supply device 12 and the seedling removal device 13. Power can be transmitted to the left and right chain transmission means 54 via the power transmission means. The PT
The O-axis 27 is divided into two right and left parts,
The timing changing means 16 is constituted by, for example, a dog-type clutch, and one clutch body 16a is slidably spline-fitted to one PTO shaft 27. And this clutch body 1
The left and right PTO shafts 27 rotate integrally by disengaging the 6a with the other clutch body, disengage the clutch body 16a via the shifter, and move the other By changing the vertical position, the left and right P
The phase of the TO shaft 27 is changed, so that the planting timing of the left and right planting cylinders 6 can be changed from the same state to a state shifted.

An electromagnetic clutch 63 for connecting and disconnecting the power transmitted from the left and right PTO shafts 27 to the left and right chain transmission means 54
When the left and right planting cylinders 6 reach the upper part of the elliptical orbit, it is detected by the sensor 64, and the power is cut off for a set time by a detection signal from the sensor 64. Is adjusted so that the distance between the stocks can be changed.

The lowering of the planting tube 6 is detected by another sensor, and the electromagnetic clutch 63 is disconnected while the planting tube 6 is in the ridge N, so that the planting tube 6 is placed in the ridge N. The moving distance of the traveling machine body 11 during a certain period may be adjusted so that the detaching position and the entering position of the planting tube 6 with respect to the ridge N are made closer to each other so that a locus substantially perpendicular to the locus is moved. The planting cylinder 6 is provided with an openable / closable opener at a lower portion. The opener is opened back and forth by a pulling link 69 when it enters the ridge at the lower end side of the elliptical locus, and forms a planting hole. The seedling pot 5 supplied at the upper end of the locus can be planted in the planting hole.

2 and 4, a chute means 15 is arranged on the transplant frame 45 above the locus of movement of the transplanting tube 6. The chute means 15 pivotally supports a pair of left and right guide chutes 15A via a pivot shaft 15B and connects them with a link 71 whose length can be adjusted so that the angle in the horizontal direction can be adjusted. It is configured to supply the pot 5 into the planting tube 6 while guiding the pot 5 left and right.

A stopper 72 for temporarily receiving the seedling pot 5 received from the seedling take-out claw 4 is provided at the discharge opening of each of the left and right guide chutes 15A so as to be freely opened and closed. The stopper 72 is urged in the closing direction by a spring and has a contact piece 72A protruding therefrom. On the other hand, the planting cylinder 6 has a push rod 6A which comes into contact with the contact piece 72A when ascending. Therefore, the planting cylinder 6
When the arm reaches the upper part of the movement trajectory, the contact piece 72A is pushed by the push rod 6A to open the stopper 72, and the guide chute 1
The seedling pot 5 held at 5A is transferred to the planting cylinder 6.

Further, the chute means 15 has a separation plate 15C at a position overlapping with the tip trajectory of the seedling extraction claw 4 in the middle upper side of the left and right guide chute 15A, so that the sticking of the leaves of the seedling pot 5 can be separated. Has become. Each of the left and right guide chutes 15A may be formed in a tubular shape in addition to the gutter shape, so that the seedling pot 5 can be guided reliably.

As shown in FIGS.
The first and second detection rollers 66 and 67 are provided in front of and behind the seeding tube 6 to contact the upper surface of the ridge N and roll to detect the height of the ridge, and contact the upper surface of the ridge to follow the unevenness. It is possible to operate the control valve 42 via the link interlocking means 68 so that the planting depth can be kept constant, and the planting depth and the ridge detection sensitivity can be adjusted.

The second detection roller 67 on the rear side also serves as a soil covering wheel. As shown in FIG.
7R and a central roller 67S, so that two seedling pots 5 planted by the left and right planting cylinders 6 can be crushed from the left and right, respectively. Numeral 70 denotes a pair of left and right scrapers supported by the transplant frame 45 corresponding to the left and right planting cylinders 6, which enter the inside when the planting cylinders 6 move upward to scrape the soil adhered to the inner surface. It is configured to drop.

The seedling tray 2 is made of plastic, is formed to be thin, has flexibility, and has a large number of pot portions 3 arranged in a grid pattern at predetermined pitches vertically and horizontally. The seedling pot 5 is grown by filling the soil with seeds and sowing and raising the seeds there. Seedling supply device 12 is shown in FIGS.
As shown in FIGS. 8 and 9, a guide rail 73 fixed to the transplant frame 45 and the steering handle 20 is provided, and the guide rail 73 is provided with a movable frame 74 into which the seedling tray 2 is loaded so as to be movable in the left-right direction.

The movable frame 74 is configured to reciprocate intermittently in the left-right direction, and the seedlings 5 are taken out while the movable frame 74 moves in the left-right direction. Further, the movable frame 74 is provided with a vertical feed mechanism for vertically feeding the seedling tray 2, and the seedling tray 2 is moved vertically when the removal of the seedlings from the horizontal row of pot portions 3 is completed. One pitch is sent.

A support plate 75 for supporting the bottom of the seedling tray 2 is provided on the left and right side plates of the movable frame 74 in the middle of the vertical direction, a vertical feed drive shaft 77 is supported on a lower portion, and a vertical feed driven shaft is provided on an upper portion. They are arranged in the horizontal direction. The vertical feed drive shaft 77
An endless chain 78 is mounted on the shaft and the vertical feed driven shaft via a sprocket, and a transport pin 79 that engages with the gap between the pot portions 3 in the vertical direction is attached to the chain 78. The pivotal operation allows the seedling tray 3 to be vertically fed via the transport pin 79.

The handle 2 is provided on both the left and right sides of the movable frame 74.
The horizontal feed shaft 8 having an endless spiral groove and penetrating the left and right side plates
1 is rotatably supported, and a slider having an engaging member that engages with the spiral groove is externally fitted to the lateral feed shaft 81, and the slider is connected to the movable frame 74. The power from the seedling removal device 13 is transmitted to the power transmission means in the right support member 80 via the wrapping transmission means 82, and the lateral transmission shaft 81 is intermittently transmitted to the lateral feed shaft 81 by the power transmission means. The movable frame 74 is moved left and right by a distance (two pitches) corresponding to the two pot portions 3 via the slider by the intermittent rotation drive,
This is intermittently repeated to reciprocate, and these constitute an intermittent transverse feed means.

A vertical feed cam 83 is fixed to the left and right sides of the horizontal feed shaft 81, and a movable frame 74 moves between the vertical feed cam 83 and the vertical feed drive shaft 77 to the leftmost end or the rightmost end. Then, a vertical feed interlocking means 84 for engaging the vertical feed cam 83 and rotating the vertical feed drive shaft 77 by a predetermined angle is provided, and the vertical feed drive shaft 77, the vertical feed driven shaft, and the chain 7 are provided.
8, the vertical feed cam 83 and the vertical feed interlocking means 84 constitute an intermittent vertical feed means.

The seedling supply device 12 feeds the seedling tray 2 vertically (1 pitch) corresponding to the vertical interval of the pot portion 3 and then feeds it to the left and right. Is sent by an amount (2 pitches) equivalent to twice the
When the removal of the seedling pots 5 from the horizontal row of pot portions 3 is completed, the seedling tray 2 is fed one pitch in the vertical direction again. Note that both the vertical feed and the horizontal feed can be adjusted according to a plurality of types of seedling trays 2 having different numbers of pot portions 3. Seedling tray 2 has 1 pot 3
There are 28 (8 × 16) types and 200 (10 × 20) types, and they may be arranged vertically or horizontally.

The seedling take-out device 13 takes out the seedling pot 5 from the two pot portions 3 of the seedling tray 2 at a predetermined seedling take-out position with respect to the seedling supply device 12, as shown in FIGS. The two seedling pots 5 are transported to above the two planting cylinders 6 of the planting device 14 and supplied by dropping. Seedling removal device 13
Are two pairs of needle-shaped seedling removal nails 4 which are paired with each other, a nail support 87 provided with the two pairs of seedling removal nails 4 at the tips,
A claw guide 88 for guiding the pair of seedling supporting claws 4 forward and backward, a claw support 87 and a holder 89 for supporting the claw guide 88
And a claw operating mechanism 90 for appropriately operating the claw support 87 and the claw guide 88.

The nail operating mechanism 90 reciprocates the seedling extracting nail 4 between the seedling tray 2 and the planting cylinder 6 while changing the posture. The supporting frame 91 is provided with a rotating shaft 93 that is rotated by the rotating power from the transmission PTO shaft 62. The rotating shaft 93 is rotated counterclockwise in FIG. And a driving cam 95 is provided coaxially with the crank body 92.
Is provided. The crank pin 92 is attached to the crank body 92.
4 are protruded.

The base end of a swing arm 96 is pivotally connected to the support frame 91 below the crank body 92 by a swing shaft 97. ) Is formed, and the crank pin 94 of the crank body 92 is inserted into and engaged with the elongated hole 98. The illustrated shape of the elongated hole 98 is such that when the return stroke Y for removing the seedling pot 5 from the pot portion 3 by the seedling removal claw 4 is accelerated, the movement is accelerated, and the seedling pot 5 is taken out from the pot portion 3 and planted. During the forward stroke X to be transferred to the cylinder 6, the shape is such that the moving speed is slow, and the efficiency of taking out and supplying the seedlings is improved while preventing the falling of the seedling pots 5 during the transfer.

A holding body 89 is pivotally connected to the tip of the swing arm 96 via a pin 99. The holding member 89 is formed in a cylindrical shape at a portion where a pin 99 is provided. A claw support 87 made of a pipe is guided through the cylindrical portion so as to be movable in the axial direction. Is capable of moving back and forth toward the seedling tray 2 of the seedling supply device 12. A claw support 87a is formed at the tip of the claw support 87, and a pair of seedling removal claws 4 are attached to the left and right sides of the claw support 87a, and the seedlings 5 in the two pots 3 are obliquely mounted. It can be pierced. The base of each pair of two seedling removal claws 4 is swingably supported so that the tip moves far and near with respect to the claw support portion 87a.

A roller 102 is attached to the holding body 89 through a bracket 101 so as to be freely rotatable. The roller 102 is mounted on an upper portion of a support frame 91 via a pin 103 so as to be swingable. The cam groove 105 is formed in the cam groove 105. The guide plate 104
Has a rolling roller 106 at the tip of the protruding arm. The rolling roller 106 is in contact with the driving cam 95, and the guide plate 104 is rotated about the pin 103 by rotating the driving cam 95 counterclockwise. It is swingable.

When the guide plate 104 swings about the pin 103, when the seedling take-out claw 4 advances toward the pot portion 3, the leaves of the seedling pot 5 start from just before the entry start point (see FIG. 1). Pin 4 of the seedling removal nail 4 so that the
In addition to swinging around the swing arm 9, the posture of the holder 89 according to the swing angle of the swing arm 96 (particularly, the relative angle of the holder 89 with respect to the swing arm 96) is regulated.

That is, when pulling out the seedling pot 5 from the pot portion 3, the front side of the cam groove 105 is positioned so that the relative angle of the holder 89 to the swing arm 96 does not change so much.
The roller 102 is shaped so as to move around the swing shaft 97 of the swing arm 96. Thus, the seedling pot 5 is picked up slowly from the pot portion 3 while the tip of the seedling picking claw 4 draws a locus about the swing axis 97 of the swing arm 96.

When the seedlings 5 taken out of the pot portion 3 are transferred above the planting tube 6, the seedling taking-out claws 4 are largely moved forward and are changed to a substantially downward posture, so that the seedlings 5 are substantially moved downward. Be in a vertical position. For this purpose, the rear side of the cam groove 105 is connected to the roller 102 by the swing shaft 97 of the swing arm 96.
It is shaped to be moved away from the camera. At the lower end of the holding body 89, a pushing link 111 is provided with a pin 112.
Is rotatably connected via a. This extrusion link 1
A long hole (or a long groove) is formed at the tip of 11 and is engaged with a pin 113 provided on a protruding arm of the claw support 87a.

On the outer periphery of the claw support 87, a coil spring 110 for urging in the retreating direction is interposed. When the swing arm 96 is located at the swing end on the seedling supply device 12 side, the cam plate 1 is rotated by the rotating crank pin 94.
14, the push-out link 111 is swung, and the holding body 89 is moved.
Then, the claw support 87 is pushed toward the seedling supply device 12 to compress the coil spring 110. This allows
The seedling removal nail 4 protrudes, and the nail support 87 has a restoring force for retreating.

The claw guide 88 is formed of a round bar or the like and is slidably inserted in the claw support 87 in the longitudinal direction. A member forming a guide portion 88a is attached to the front end of the claw guide 87, and the rear end has a side view L. A plate-shaped operating member 115 is mounted, a stopper 116 is fixed at an intermediate portion, and a spring 117 is fitted between the stopper 116 and the rear end of the claw support 87.

Two guide holes 88b are formed on the left and right sides of the guide portion 88a of the guide 88, and the distance between the right and left finger holes 88b is equal to the distance K between the pivotal support portions of the right and left seedling removal claws 4.
It is set narrower. Accordingly, when the seedling removal nail 4 and the nail guide 88 move relatively, the distance L between the nail tips of the seedling removal nail 4 changes. That is, when the guide portion 88a is located at the tip end side of the seedling removal nail 4, the distance L between the nail tips is the widest.
, The guide portion 88a approaches the base side of the seedling extraction nail 4, and the distance L between the nail tips gradually narrows.

Therefore, when the seedling pot 5 is taken out of the pot portion 3 and moved forward, the tips of the left and right seedling take-out claws 4 approach each other while protruding, and are substantially linear orbits inclined with respect to the left and right center lines. Will move up. In a state where the seedling pot 5 is taken out by the seedling take-out nail 4, a nail guide 8 is provided.
When the guide portion 88a is moved from the position located at the base portion side of the seedling removal claw 4 to the tip side, the distance L between the claw tips increases from a narrow state to a wide state, and the guide portion 88a abuts on the seedling pot 5 in parallel with this. And pushes out the seedling removal nail 4. At this time, the tip of the seedling removal claw 4 with respect to the seedling pot 5 comes off substantially in the same orbit as the trajectory that has entered, so that damage to the seedling pot 5 at the time of entry and detachment is minimized.

An operating piece 120 is attached to the holder 89 by the shaft 12.
9 and is urged clockwise in FIG. 9 by a spring. This operating piece 120 is substantially T-shaped having one foot and both left and right arms, and has a lock portion 1 on the left arm.
20A, the release part 120B on the right arm, and the pushing part 1 on the foot.
20C are formed. The operating member 115 fixed to the claw guide 88 has a portion parallel to the claw guide 88, and this portion is guided by a holding body 89 so as to be prevented from rotating. By engaging with the locking portion 120A of the piece 120, the movement of the claw guide 88 in the protruding direction is restricted.

A lock arm 122 is pivotally supported at the rear end of the claw support 87. The lock arm 122 is urged clockwise by a spring. 122 is the holder 89
The state is maintained by engaging with the claw guide 8.
The lock of the lock arm 122 is disengaged by the operation member 115 by the protrusion of the lock member 122, and the lock arm 122 is rotated by the rotation of the operation piece 120 to perform the engagement release. .

The pushing portion 120C of the operating piece 120 can be brought into contact with a lock releasing member 123 provided on the support frame 91, and the operating piece 120 is rotated by this contact, so that the claw guide 88 is projected. The holding body 89, the crank body 92,
The claw guide 88 and the claw support 87 are supported by the drive cam 95, the swing arm 96, the guide plate 104, the push-out link 111, and the like. A claw operation mechanism 90 is configured to move while changing the posture to a substantially downward facing seedling detaching position, take out the seedling 5 in the seedling removing position, and drop the seedling 5 in the seedling detaching position. I have.

A return interlocking means for simultaneously retreating the claw support 87 and the claw guide 88 when the claw guide 88 is moved to the claw tip side by the operating piece 120, the operating member 115, the lock arm 122, and the like. The operation piece 120, the lock arm 122, the lock release member 123, and the like constitute return ensuring means for guaranteeing the return operation of the claw support 87 after the operation of the return interlocking means.

Next, the operation of picking the seedlings 4 by the above-mentioned claw operating mechanism 90 will be described. In the state of FIG.
Reference numeral 9 denotes a position closest to the seedling tray 2. When the crank pin 94 rotates within the central arc of the long hole 98 of the swing arm 96 from this state, the pushing link 111 is swung about the pin 112. Then, the nail support 87 and the seedling removal nail 4 are advanced toward the seedling pot 5 in the pot portion 3. Fixed nail guide 8
8, the pair of left and right seedling extraction claws 4 is regulated by the nail insertion holes 88b of the guide portions 88a that are narrower than the pivotal support interval K, and the tip of the seedling extraction nail 4 moves forward. At the same time, it is pierced into the seedling pot 5 while reducing the distance L between the nail tips. In a side view, the piercing direction of the seedling removal nail 4 is inclined with respect to the center line of the seedling pot 5, and does not pierce the stem and root of the seedling.

When the crank body 92 is rotated after the seedling extraction claw 4 has pierced the seedling pot 5, the swing arm 96 swings leftward through the crank pin 94, and moves forward through the state shown in FIG. Move on the locus X. In the movement on the forward movement trajectory X, the roller 89 provided on the holding body 89 is guided by the cam groove 105 of the guide plate 104, whereby the seedling extraction claw 4 and the claw guide 88 are moved from the substantially horizontal extraction position in FIG.
When the roller 102 moves to the vicinity of the rear end of the cam groove 105, the operating piece 1
The pushing portion 120 </ b> C starts to contact the unlocking member 123.

When the operation piece 120 comes into contact with the lock release member 123 and starts rotating (operation of the return interlocking means), the lock portion 120A releases the lock of the operation member 115, and the claw guide 88 is compressed to that point. As shown by a two-dot chain line in FIG. 10, the spring 117 is resiliently protruded and advances toward the tip of the immovable seedling picking claw 4 to push out the piercing seedling pot 5.

At this time, the claw guide 88 is brought into contact with the guide portion 88a on a large surface without damaging the seedling pot 5, and the detached seedling pot 5 is supplied into the chute means 15 and held by the stopper 72. . In this state, the planting cylinder 6 rises, and the push rod 6A comes into contact with the contact piece 72A to stop the stopper 72.
Is released, the seedling pot 5 is dropped and supplied from the guide chute 15 </ b> A into the planting tube 6 and delivered to the planting tube 6.

If the lock arm 122 cannot be rotated for some reason, such as the movement resistance of the claw guide 88 is too large, the operating piece 120 is further rotated by the lock release member 123 and the release portion 120B is turned on. Lock arm 1
22 is forcibly rotated (operation of the security means) to ensure that the seedling removal claw 4 is retracted. The rotation of the crank body 92 from this state swings the swing arm 96 to the right, moves the holding body 89 to the state shown in FIG.
Is quickly returned on the backward movement trajectory Y.

FIG. 12 shows a modification of the mounting structure of the seedling picking nail 4. The nail supporting portion 87 a of the nail support 87 has a seedling picking nail mounting hole 8 for a seedling tray having 128 pots.
Seedling removal claw mounting holes 87c for seedling trays 7b and 200
Are formed in the guide portion 88a of the nail guide 88, and the nail insertion holes 88b and 20 for the seedling tray having 128 pots are provided.
A seedling tray insertion hole 88c for the seedling tray 0 is formed, and the mounting position of the seedling extraction nail 4 can be changed in accordance with the type change of the seedling tray 2.

The claw support portion 87a of the claw support 87 and the guide portion 88a of the claw guide 88 are prepared in two types, one for the 128 pot portion and the other for the 200 pot portion, and can be replaced as needed. Is also good. FIG. 13 shows a modification of the power transmission system of the planting cylinder 6, in which power is transmitted from the PTO shaft 27 to one chain transmission means 54, and an intermediate portion is provided between the chain transmission means 54 and the left and right drive shafts 52. A shaft 126 is provided, and one of the drive shafts 52 is driven from the intermediate shaft 126 via the electromagnetic clutch 63 and the gear 127, and the intermediate shaft 12
6 to drive the other drive shaft 52 via the electromagnetic clutch 63 and the timing changing means 16.

The timing changing means 16 of this modification is
A gear body 128 having two gears is loosely fitted to the intermediate shaft 126 so that power can be connected and disconnected by the electromagnetic clutch 63, and the gears 129 and 13 mesh with the drive shaft 52 with the two gears of the gear body 128.
0 is loosely fitted and the intermediate shift body 131 is moved, so that the gear 1 is moved through the pin 132 provided on the shift body 131.
29 and 130 are alternatively engaged. The phases of the pin engagement holes in the gears 129 and 130 are 1
It is shifted by 80 °.

The shift body 131 connects the pin 132 to the gear 1
29, the other drive shaft 52 rotates in synchronization with the one drive shaft 52, so that the left and right planting cylinders 6 plant the seedling pots 5 at the same position in the longitudinal direction of the ridge N, and move the shift body 131. When the pin 132 is moved to engage with the gear 130, the other drive shaft 52 rotates 180 ° out of phase with the one drive shaft 52, and the left and right planting cylinders 6 are out of phase with each other, and The seedling pot 5 is planted at the staggered position in the longitudinal direction.

FIGS. 14 to 16 show a second embodiment of the present invention, in which seedling pots 5 are simultaneously taken out from two pot portions 3 in the vertical direction of a seedling tray 2. FIG. The nail support portion 87a of the nail support 87 of the seedling removal device 13 is vertically long,
Two pairs of seedling removal claws 4 are arranged up and down.
Can guide two pairs of upper and lower seedling removal claws 4 so that the seedling pots 5 are simultaneously taken out of the upper and lower two pot portions 3 of the seedling tray 2.

The vertical and horizontal feed structure of the seedling supply device 12 is such that the seedling tray 2 is intermittently fed one pot portion at a time in the horizontal direction as in the prior art, and the structure of the vertical feed interlocking means 84 is changed in the vertical direction. The pot portion is configured to be intermittently fed.
In the planting device 14, the two front and rear planting tubes 6 are attached to the rear ends of the left and right second parallel links 50 via the tube mounting body 133, and the rear end of the pulling link 69 is connected to the interlocking rod 134.
The two guide chutes 15A of the chute means 15 are arranged in the front and rear directions by connecting to the two front and rear planting cylinders 6 through the front and rear sides, and allowing the rear planting tube 6 to be adjusted in the front and rear position.

It is to be noted that the tube mounting body 133 can be used in the first embodiment as well, and as shown by the two-dot chain line in FIG. In this case, in this case, both or one of the planting cylinders 6 is connected to the cylinder mounting body 13.
3 can be attached to the left and right positions freely. FIG.
Reference numeral 7 denotes a modification of the second embodiment, in which the rear planting tube 6 can be moved forward and backward with respect to the tube mounting body 133 and the interlocking rod 134, and is urged forward by a spring 135. , And can be moved backward by Bowden wires 136 and 137.
The front and rear guide chutes 15A are connected by a link 140 so as to be able to move back and forth, and the rear guide chutes 15A are urged forward by a spring 141 and rotatable rearward by a Bowden wire 138.

The three Bowden wires 136, 137, 1
Reference numeral 38 is connected to an adjustment lever 139 provided on the steering handle 20. By rotating the adjustment lever 139, the front and rear position of the rear planting cylinder 6 is adjusted, and the rear guide chute 15A is correspondingly adjusted. Can be arranged, and the planting interval of the seedling pot 5 can be adjusted. It should be noted that the present invention is not limited to the above-described embodiment, and can be variously modified. For example, the transplanter 1 shows a self-propelled walking type, but may be configured as a riding type mounted on a traveling vehicle,
Two sets of right and left can be arranged, and two seedlings can be transplanted to each of the two ridges N, or four seedlings can be transplanted to one ridge N at a time. Two pairs of seedling removal claws 4 are arranged in the left-right direction, two planting cylinders 6 are arranged in the front-back direction, and the shoot means 15 guides the two left-right seedling pots 5 back and forth. Two pairs of seedling removal claws 4 are arranged vertically,
Two planting cylinders 6 may be arranged in the left-right direction, and the shoot means 15 may guide the two upper and lower seedling pots 5 left and right.

When the seedlings 5 are planted by the two front and rear planting cylinders 6, the distance between the two seedlings 5 to be planted at the same time and the transplanting machine 1
May be the same or different from the strain interval formed by moving the strain forward. When the ridge N is covered with the multi-film, a straight or cross-shaped cutting blade is formed at the lower end of the planting tube 6, or the plant is burned down with an electric heater or a gas heater in front of the planting tube 6. A piercing means for forming an additional hole is provided. When this perforating means is provided, two planting cylinders 6
And two sets are arranged in such a manner as to move up and down.

Further, the seedling supply device 12 sets the seedling tray 2 to 3
It is possible to intermittently feed horizontally or vertically by a plurality of pitches equal to or more than the pot portion. In the seedling extracting device 13, three or more pairs of right and left or front and rear seedling extracting claws 4 are provided. A plurality of three or more pieces are provided before and after, and a chute means 15 is provided correspondingly, and three seedlings 5 are placed on one ridge N.
It is also possible to plant one or more plants at the same time.
One or more multiple simultaneous planting structures can be easily configured.

[0069]

As described above in detail, according to the present invention, two pairs of seedling removal claws 4 take out two seedling pots 5 from one seedling tray 2 at the same time and perform two planting operations. The two seedling pots 5 can be transplanted to the ridges N by transferring the seedlings 6 to each other and descending the respective seeding cylinders 6, so that the planting efficiency can be approximately doubled and dense planting is possible.

The two planting cylinders 6 can transfer the seedling pots 5 in two rows to the ridge N, and can set the planting condition at the same position or the staggered position in the longitudinal direction of the ridge N. Can be planted. . Two seedling pots 5 can be planted at the same time two by one. The planting efficiency can be approximately doubled, dense planting can be performed, and a transplanter with low cost can be provided.

The two seedling pots 5 can be reliably transferred to the planting tube 6 without being affected by the distance between the two pairs of seedling removal claws 4 and the two planting tubes 6.

[Brief description of the drawings]

FIG. 1 is a cross-sectional plan view of a main part of a seedling removal device according to a first embodiment of the present invention.

FIG. 2 is a sectional front view of a main part of the planting device.

FIG. 3 is a side view showing the entire transplanter.

FIG. 4 is a side view showing a main part of the transplanter.

FIG. 5 is a plan view showing a rear part of the transplanter.

FIG. 6 is a plan view of a traveling body.

FIG. 7 is a diagram showing a power transmission system of the transplanter.

FIG. 8 is a side view showing a seedling supply device and a seedling removal device.

FIG. 9 is a cross-sectional side view of a main part of the seedling removal device when the seedling is removed.

FIG. 10 is a cross-sectional side view of a main part of the seedling removal device when the seedling is released.

FIG. 11 is a side view of a main part of the seedling removal device when piercing a seedling.

FIG. 12 is a partial cross-sectional plan view showing a modification of the seedling removal nail attachment structure.

FIG. 13 is a diagram showing a modification of the transmission system of the planting cylinder.

FIG. 14 is a cross-sectional side view of a seedling removal device according to a second embodiment of the present invention.

FIG. 15 is a side view of the planting device.

FIG. 16 is a plan view of the planting device.

FIG. 17 is a side view showing a modification of the second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transplanter 2 Seedling tray 3 Pot part 4 Seedling picking claw 5 Seedling pot 6 Planting tube 10 Transplanting device 11 Traveling body 12 Seedling supply device 13 Seedling removing device 14 Planting device 15 Shooting means 16 Timing changing means

Claims (6)

[Claims] 1. Two pairs of seedling removal claws (4) are inserted into two pot portions (3) of a single seedling tray (2) that can be intermittently moved in the vertical and horizontal directions, respectively, and two seedling pots (4) are inserted. 5), the seedling extraction nail (4) is retreated, the seedling pot (5) is taken out, and both seedling extraction nails (4) are moved to above the two planting cylinders (6), and both seedling extraction nails are moved. The seedling pot (5) is delivered from the planting tube (6) to the planting tube (6), and the planting tube (6) is lowered to the ridge (N).
Transplanting the seedling pot (5) into the plant. 2. The two planting tubes (6) are located in a direction intersecting the longitudinal direction of the ridge (N), and have a same or different descent period to the ridge (N). The transplantation method according to claim 1, wherein 3. A seedling supply device (12) on which a seedling tray (2) is placed on a traveling body (11) and which can be intermittently moved vertically and horizontally.
The seedling removal device (13) which takes out the seedling pot (5) from the seedling tray (2) on the seedling supply device (12) and moves to a required position, and the seedling removal device (1) at the required position.
From 3) to the planting tube (6) and this planting tube (6)
And a transplanting device (14) for transplanting the seedlings to the ridges (N), wherein the seedling removal device (13) is provided in two pot portions (3) in one seedling tray (2). The planting device (14) has two pairs of seedling removal claws (4) for simultaneously piercing the seedling pots (5), and the planting device (14) receives two seedling pots (5) from each seedling removal nail (4). The seedling supply device (12) has an intermittent feed of the seedling tray (2) by two pot portions (3) in the arrangement direction of the two pairs of seedling removal claws (4) and is orthogonal to the arrangement. A transplanting machine having a feeding means for intermittently feeding a seedling tray (2) one pot portion (3) in a direction. 4. The transplanter according to claim 3, wherein the two pairs of seedling removal claws (4) are located in a direction intersecting with or in the same direction as the longitudinal direction of the ridge (N). . 5. The two transplanting tubes (6) are located in a direction intersecting the longitudinal direction of the ridge (N), and the transmission system of one of the transplanting tubes (6) is arranged with respect to the other. The transplanter according to claim 3, further comprising timing changing means (16) for shifting a descent period to the ridge (N) from the same state. 6. The planting device (14) comprises two planting tubes (6).
4. A chute means (15) for guiding seedling pots (5) released from two pairs of seedling removal claws (4) to two planting cylinders (6), respectively. The transplantation machine according to 1.