JPH119024A - Transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transplanter capable of carrying out a good delivery of seedlings by allowing a seedling-supplying position to agree with the stopping position of a transplanting body in spite of presence or absence of a multi-film. SOLUTION: This transplanter having a boring body 16 and a transplanting body, supported so as to be freely lifted and lowered at the rear part of a traveling body, capable of boring a hole for transplanting in a multi-film M by lowering the boring body 16 to be brought into contact with the multi-film M, forming a transplanting hole in a ridge R by lowering the transplanting body and protruding the transplanting body from the hole for transplanting formed by the boring body 16 to the ridge R and dropping and releasing a seedling into the transplanting hole to transplant the seedling while traveling has a lifting and lowering structure 31 for supporting the boring body 16 so as to approach the transplanting body according to the lowering of the boring body 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transplanter for planting seedlings such as vegetables on a ridge while running.

[0002]

2. Description of the Related Art As a transplanting machine for planting seedlings such as vegetables on ridges, there is a transplanting machine provided with a transplanting device behind a running body so that the seedlings are planted while running across a ridge. As a transplanting device, a planting body for planting seedlings, a punching device for forming holes for planting in a multi-film covering the ridges, a seedling mounting table for placing a seedling tray on which a large number of soil block seedlings were raised, and a seedling Remove seedlings from seedling tray by taking out nails
There is an apparatus which comprises a seedling feeding device which takes out the seedlings one by one and supplies them to the plantlets from above.

[0003] The planting body is supported by an oscillating link mechanism comprising a parallel link oscillating back and forth and a parallel link oscillating up and down. As shown in the figure, the plant body 122 moves in the direction indicated by the arrow D with respect to the traveling direction of the running body on an elliptical motion trajectory K1 that is long vertically. The movement trajectory K1 indicates the movement trajectory of the lower end of the plant body 122.

[0004] The drilling device has a drilling body 123 heated by a burner or the like, and this drilling body 123 is supported by a lifting mechanism comprising a parallel link mechanism so as to be raised and lowered only in the vertical direction, and is lowered to cover the ridge. By contacting the multi-film, a planting hole is formed in the multi-film. The planting body 122 has a perforator 124 which can be opened and closed back and forth at the lower part. The seedling is dropped and supplied on the upper side of the movement trajectory K1. Piercing into the ridge through the planting hole formed by the above and opening back and forth, forming a transplanting hole in the ridge, and dropping and discharging the seedling into the transplanting hole.

[0005] Further, the implant 122 temporarily stops at the upper side of the movement trajectory K1 (during which the transplanter is advancing),
By adjusting the stop time, the interval between the plants (planting interval in the longitudinal direction of the ridges of the seedlings) is adjusted. FIG.
Represents a ground trajectory K2 of the plant body 122 obtained by adding a displacement in the traveling direction to the movement trajectory K1 of the plant body 122;
The point is a position for supplying seedlings to the planted body 122, and the point B is the perforated body 1.
The position at which the plant 23 is dropped and the point C indicate the position at which the plant 122 is stopped.

[0006]

In the prior art, when the ridge R is not covered with the multi-film, the perforated body 123 is unnecessary, and the planting body 122 is stopped at the point A. When the plant 122 is stopped at the point A, the plant 1
Since the stopping of the plant 22 and the delivery of the seedlings are performed at about the same time, the delivery of the seedlings can be performed very stably. However, when the ridge R is covered with the multi-film, as described above, Since the seedlings are dropped and supplied when they stop at the point C of No. 11 and start to move and pass the point A, the delivery of the seedlings is unstable, and the seedlings 122
Is in the stop position C, the seedlings are waiting in a state where the floor soil portion is pierced by the seedling removal nails, and there is a problem that the seedlings may fall off the seedling removal nails.

This is because the distance L2 in the front-rear direction from the point A to the ridge entry position of the plant body 122 is the distance in the front-rear direction between the lower end position of the movement trajectory K1 of the plant body 122 and the drop position of the perforated body 123. When the planting body 122 is stopped at the point A when the ridge R is covered with the multi-film because it is shorter than L1, when the planting body 122 enters the ridge, the perforated body 123
Of the planting body 122 in front of the planting hole perforated in the multi-film.
2 changes and causes poor planting), and therefore, the distance L3 in the front-rear direction from the falling position of the perforated body 123 on the ground trajectory K2 to the rush position of the planted body 122
Is the position of the lower end of the movement trajectory K1 of the plant
When the drop position of the piercing body 123 is taken at a position which is the same distance as the distance L1 in the front-rear direction from the drop position of the piercing member 23, as shown in FIG. And the stop position of the plant body 122 is a point C behind it.

The distance L1 in the front-rear direction between the lower end position of the movement locus K1 of the planting body 122 and the falling position of the perforated body 123
Can be reduced to the same distance as L2,
Draws an elliptical trajectory, and the perforated body 123 moves up and down. Therefore, when the distance L1 is reduced, the perforated body 123 and the plant
22 will interfere with each other. In addition, the plant 12
2 is raised and lowered only in the vertical direction by the parallel link mechanism,
That is, when the planting body 122 is moved up and down substantially in parallel with the perforated body 123, the planting body 122 enters the ridge diagonally from the rear and exits the ridge diagonally forward due to the displacement in the traveling direction. Will have an adverse effect on

Further, it is sufficient to set the drop supply position of the seedlings at point C. However, at point C, the seedlings cannot be supplied because the hole opener 124 of the planting body 122 is not completely closed. In view of the above problems, an object of the present invention is to provide a transplanter that can transfer a seedling satisfactorily regardless of the presence or absence of a perforated body.

[0010]

The technical means taken by the present invention to achieve the above object is to support the boring body and the planting body at the back of the traveling body so as to be able to move up and down, and to lower the boring body. By forming a planting hole in the multi-film by contacting the multi-film, and by lowering the planting body to penetrate the ridge from the planting hole formed by the perforated body,
In a transplanting machine in which a transplanting hole is formed in a ridge and a seedling is dropped and released into the transplanting hole, and the seedling is planted in the ridge while running, the transplanter is supported so as to approach the planting body as the boring body is lowered. The lifting mechanism is provided.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 3 shows a transplanting machine 1 for transplanting seedlings such as vegetables into a ridge R. In FIG. 3, the vegetable transplanting machine 1 is a walking type having a transplanting device 3 and a steering handle 4 behind a traveling body 2, The soil block seedlings are automatically planted at predetermined intervals on the ridges R while running in the longitudinal direction across the ridges R.

The direction of travel of the transplanter 1 is referred to as the front-rear direction, and the lateral direction perpendicular to the direction of travel is referred to as the left-right direction. The traveling body 2 has a gantry 6 attached to and fixed to a front portion of the transmission case 5 in a forwardly protruding manner, and has a traveling body 8 mainly constructed by mounting an engine 7 and the like on the gantry 6. Front wheel 10 and rear wheel 1 provided with 8 on both left and right sides
1 so that it can run.

The transplanting device 3 is provided on a transplanting frame 12 attached to the rear of the traveling machine 8 and includes a planting body 13 for planting a seedling in a ridge R, and a seedling supply for supplying a seedling to the planting body 13. The apparatus is mainly provided with a device 14, a soil cover ring 15 for covering and suppressing the roots of the planted seedlings, and a perforated body 16 for forming a planting hole in a multi-film covering the ridge R.

The transplanting frame 12 is disposed behind the traveling body 8 and has a fixed portion 12A having a front portion fixed to the transmission case 5 and a fixed portion 12A disposed below the fixed frame 12A and having a front portion mounted on the transmission frame. A movable frame 12B pivotally attached to the case 5 so as to be rotatable around the left and right axes and supported so as to be able to swing up and down. The seedling supply device 14 is provided on the fixed frame 12A, and after the fixed frame 12A. The steering handle 4 is attached to the end,
A planting body 13, a covering soil ring 15, and a perforated body 16 are supported by the movable frame 12B.

The fixed frame 12A is formed in a rectangular shape in a plan view from a pair of left and right side frames and frame materials before and after connecting the left and right side frames, and the movable frame 12B is formed of a pair of left and right side frames and the left and right sides. An open U-shape is formed forwardly in a plan view from the rear frame connecting the rear end side of the frame. Planting body 13
As shown in FIGS. 2 and 4, the upper part is formed of a vertically-opening cylindrical body, and the lower part is provided with a beaker-shaped opening device 13A that can be opened and closed back and forth. It is freely supported.

The swing link mechanism 18 has a first parallel link 20 whose upper end is pivotally supported by a bracket 19 fixed to the movable frame 12B and swings back and forth, and is pivotally connected to a lower end of the first parallel link 20. Relay plate 21 and relay plate 2
A second parallel link 2 whose front end is pivotally supported by 1 and swings up and down.
The cylindrical portion of the plant 13 is pivotally connected to the rear end of the second parallel link 22.

A bearing 23 is fixed to an upper link 22a of the second parallel link 22. The bearing 23 is provided between a crank arm 24a of a crankshaft 24 rotatably supported on a movable frame 12B around a left and right axis. Crank pin 24b
Is inserted. Therefore, the power from the transmission case 5 causes the crankshaft 24 to rotate counterclockwise in FIG.
2, the plant 13 moves up and down while swinging back and forth, and the plant 13 moves with respect to the traveling body 2 along a vertically long substantially elliptical motion trajectory K1 as shown in FIG. Move in the direction of the arrow as you draw. Then, the movement locus K of the plant 13
At the upper end side of the seedling S, the seedlings S are dropped and supplied, and the planting body 13 is lowered with the lower opening device 13a closed, and is opened through the planting hole H1 formed in the multi-film M by the perforator 16. The device 13a enters the ridge R, and after the entry, the opening device 13a is opened back and forth by the interlocking tool 25 to form a transplant hole H2 in the ridge R, and the implant hole H2 is inserted into the implant 13 inside. The stored seedlings S are dropped and released.

After the seedlings S have been released into the transplanting hole H2, a pair of left and right covering soil wheels 15 rolling on the ridges R located at the rear of the planting body 13 cause the right and left sides of the seedling-planting portion to move right and left. The soil is buried from both sides and the stake is suppressed. As shown in FIG. 3, the seedling supply device 14 mounts and supports a seedling tray T in which a large number of soil block seedlings are accommodated vertically and horizontally and tilts backward so as to laterally feed the seedling tray 27. And the seedlings 13 are taken out from the seedling tray T one by one,
And a seedling delivery device 28 for transporting the seedlings to

As shown in FIG. 4, the seedling feeding device 28 has a seedling picking claw 30 supported by a movement mechanism 29, and the seedling picking nail 30 is attached to the floor soil portion in the pot portion P of the seedling tray T. 30
The seedling S is taken out from the pot portion P by moving the seedling removal nail 30 forward in the pierced state,
After being taken out, the tip of the seedling removal nail 30 is swung forward and downward to change the posture of the seedling S so that the floor portion is on the lower side, and in this state, the planting body 13 located on the lower side is changed. It is configured to drop and release the seedling S. After the release of the seedlings S, the seedling removal claws 30 return to their original positions and repeat the above operation.

The seedling mounting table 27 is stopped during the removal of the seedlings by the seedling delivery device 28, and when the seedlings S are removed, the seedlings are moved in the horizontal direction by an amount corresponding to one horizontal pitch of the pot portion P of the seedling tray T. Moving. Further, the seedling mounting table 27 is provided with a vertical feeding mechanism for vertically feeding the seedling tray T by one pitch of the pot portion after one horizontal row of seedlings is taken out. The seedling tray T is made of resin and has flexibility, and a plurality of pots P arranged vertically and horizontally are provided so as to protrude from the rear surface.
Soil block seedlings S are raised.

The rotation of the crankshaft 24 is applied to the plant 13
As shown by the solid line in FIG. 4, the motor is stopped (the power transmission to the crankshaft 24 is disconnected by the clutch) at the seedling supply position at the upper end (or a position slightly lowered from the upper end) of the movement trajectory K1. The stop time is adjusted (the stop time is lengthened or shortened) to enable adjustment between strains. At this time, the power transmission to the seedling delivery device 28 and the seedling placing table 27 is also cut off, and the seedling removal claw 30 stops after the seedling is released.

As described above, since the planted body 13 is stopped at the seedling supply position where the seedling S is dropped and supplied from the seedling removal claw 30, a stable delivery of the seedling S is performed. Has become. The perforated body 16 is configured to be heated by a gas burner, an electric heater, or the like. As shown in FIGS. 1 and 2, the perforated body 16 is moved by an elevating mechanism 31 including a link mechanism.
, And can move up and down with respect to the traveling body 2.

The perforated body 16 may be a perforated multi-film or a perforated multi-film. The lifting mechanism 31 includes a pair of upper and lower links 32 and 33 and a disk-shaped cam 34. The upper link 32 is formed in a rectangular shape, and the front side is supported by a bearing 35 fixed to the movable frame 12B via a support shaft 36 so as to be rotatable around the left-right axis. 37 is pivotally connected via a support shaft 38 so as to be rotatable around a left-right axis. A roller 39 is pivotally mounted on a middle portion of the upper link 33 so as to be rotatable around an axial center in the left-right direction.

The lower link 33 has a movable frame 1 on the front side.
A support shaft 4 is attached to a bracket 40 fixed to the lower side of 2B.
1 to be rotatably supported around the left-right axis,
The rear side is pivotally attached to a mounting member 37 via a support shaft 42 so as to be rotatable around a left-right axis. The cam 34 is fixed so as to rotate integrally with the crankshaft 24, and the roller 39 rolls around the outer periphery of the cam 35.
5 is pressed against the outer periphery. Further, a concave portion 43 into which the roller 34 falls is formed on the outer periphery of the cam 34.

An intermediate plate 44 is provided below the mounting member 37.
Are fixed by bolts 45 and nuts, and a mounting plate 46 fixed to the perforated body 16 is fixed to the intermediate plate 44 by bolts 47 and nuts. The bolt insertion hole 48 for inserting the bolt 45 in the intermediate plate 44 is formed in a long hole shape in the front-rear direction, and the mounting position of the perforated body 16 in the front-rear direction can be changed.
The mounting position of the mounting plate 46 in the vertical direction with respect to the intermediate plate 46 can be changed, and the mounting position of the perforated body 16 in the vertical direction can be changed.

In the lifting mechanism 31 having the above structure, the roller 39 falls into the concave portion 43 of the cam 34,
The upper and lower links 32 and 33 swing downward by their own weight, the perforated body 16 descends by its own weight, and the perforated body 16 comes into contact with the multi-film M, and the contacted portion disappears by the action of heat, and the multi-film A planting hole is formed in the hole.

At this time, the distance between the support shafts 41 and 42 is longer than the distance between the support shafts 36 and 38, and the support shaft 42 is moved rearward of the support shaft 38 as the boring body 16 descends. , So that as the perforated body 16 descends, it approaches the rear, that is, toward the planting body 13 side,
The piercing body 16 is configured to move so as to enter the trajectory K3 of the extension of the planting body 13.

Thereafter, the rotation of the cam 34 in the counterclockwise direction in FIG. 1 causes the roller 39 to be guided by the guide surface 43a of the concave portion 43 to the outer peripheral surface of the cam 34 other than the concave portion 43.
The perforated body 16 rises so as to be separated from the planted body 13 so that the perforated body 16 does not interfere with the descending planted body 13. The outer peripheral surface of the cam 34 other than the concave portion 43 is provided with the crankshaft 2 so as to hold the piercing body 16 at the standby position as far as possible.
4 is formed in a circular shape having a substantially constant distance from the axis.

When the plant 13 is stopped at the seedling supply position, the perforated body 16 and the elevating mechanism 31 are in the state shown by the solid line in FIG. At a position where the roller 39 starts to move and slightly moves, the roller 39 is
It is configured such that it falls into 3 and the perforated body 16 descends. In this manner, the distance from the lower end of the movement trajectory K1 of the planted body 13 to the perforated body 16 at the ascending position is longer than the distance in the front-rear direction until the planted body 13 starts moving from the stop position and enters the ridge R. Even in the case where the distance in the direction is long, the lower part of the perforator 13a of the planting body 13 can protrude into the planting hole formed by the perforated body 16.

The cam 34 has a first cam 34a for holding the piercing member 16 at the standby position (see FIG. 3) and a concave portion 43 for lowering the piercing member 16 from the standby position and raising it again to the standby position. The first cam 34a is fixed to the crankshaft 24, and the second cam 34b is connected to the first cam 34a around the axis of the crankshaft 24 so that the relative angle can be adjusted. Have been
The position at which the roller 39 falls can be adjusted.

As shown in FIG. 2, FIG. 3, FIG. 7, FIG. 8, and FIG. 10, the covering earth ring 15 is provided around a shaft 49 in the left-right direction via a support shaft 50 on a bracket 49 fixed to the rear of the movable frame 12B. The cover frame 51 is rotatably supported by a rear portion of the soil cover frame 51 which is rotatably supported by the shaft. The soil covering frame 51 is connected to the movable frame 12B via a planting depth adjusting mechanism 52, and the rear part of the movable frame 12B is supported by the soil covering member 15, so that the movable frame 12B changes the height of the ridge R. It is adapted to move up and down.

The planting depth adjusting mechanism 52 includes a planting depth adjusting lever 53, a locking member 54 for locking the planting depth adjusting lever 53, a planting depth adjusting lever 53 and a soil cover frame. And a connecting member 55 connecting the connecting member 51 and the connecting member 51. The locking member 54 is formed of a plate material, and is fixed to a pair of left and right brackets 57 attached to a fixed attaching member 56 at the rear end of the movable frame 12B. A shaft 58 having a left-right axis is rotatably supported on the mounting member 56 around the axis. A mounting plate 60 is mounted on a boss 59 fixed to the shaft 58 so as to be rotatable integrally. The planting depth adjusting lever 53 is swingable around the axis of the support shaft 58.

At the upper part of the connecting member 55, a front portion of the mounting plate 60 is pivotally attached to a turning member about a left-right axis.
At the lower part of 5, a rear part of the soil cover frame 51 is pivotably mounted around a left-right axis. In addition, the locking member 5
4 is formed with a guide groove that allows the planting depth adjusting lever 53 to swing, and a locking portion that restricts the swinging of the planting depth adjusting lever 53 is formed in this guide groove. A plurality of attachment depth adjustment levers 53 are formed at intervals in the swing direction.

Therefore, by swinging the planting depth adjusting lever 53 backward, the soil covering member 15 is lifted with respect to the movable frame 12B, and the movable frame 12
B is narrowed, and conversely, by swinging the planting depth adjusting lever 53 forward, the movable frame 12B
The covering member 15 is lowered with respect to the movable frame 12B.
(The vertical swinging position of the covering member 15 with respect to the movable frame 12B can be adjusted), and as a result, the movable frame 12B swings up and down, and the ridge R , The depth of planting of seedlings can be changed.

In the illustrated example, as the locking position of the planting depth adjusting lever 53 moves forward, the movable frame 12B
The height of the plant becomes higher and the planting depth becomes shallower. Further, a contact member 26A made of a rod material capable of contacting the fixed frame 12A is fixed to an upper portion on the rear side of the movable frame 12B, and a rod material capable of contacting the movable frame 12B is attached to the rear end of the fixed frame 12A. Is fixed, and the movable frame 12B is fixed between the position where the contact member 26A contacts the fixed frame 12B and the position where the movable frame 12B contacts the contact member 26A. Up and down swing adjustment with respect to the frame is enabled.

On the other hand, as shown in FIGS. 3, 5 and 6,
The traveling body 8 is supported to be able to move up and down. That is, a support cylinder 6A having a left-right axis is fixed to the front part of the gantry 6, and the left-right inner ends of a pair of left and right front-wheel support shafts 61 are rotatable around the left-right axis. The mounting cylinder 62 is externally fitted to the left and right front ends of the left and right front wheel support shafts 61.

A front wheel support arm 63 is provided on each of the left and right mounting cylinders 62.
The upper end of the front wheel 10 is connected and fixed, and the front wheel 10 is attached to the lower end of each front wheel support arm 63 via an axle so as to be rotatable around the left and right axes. The outer ends of the left and right front wheel support shafts 61 and the mounting cylinder 62 are formed in a hexagonal cross section and are configured to rotate integrally, and the left and right front wheels 10 are connected to the front wheel support shaft 6.
It can swing up and down around one turn.

The outer end sides of the left and right front wheel support shafts 61 and the mounting cylinder 62 are fixed by pins penetrating both, and the pin insertion holes formed on the outer end sides of the left and right front wheel support shafts 61 are axially centered. The left and right positions of the front wheel 10 can be adjusted (that is, the wheel distance of the front wheel 10 can be adjusted). The rotational power of the engine 7 is input to a power transmission device in the transmission case 5, and the power of the traveling system is output from an output shaft 64 protruding to the left and right of the transmission case 5 in a shiftable manner. In addition, from the transmission case 5, the PTO
A PTO shaft from which a PTO-based power whose power can be freely connected and disconnected by the clutch is output is projected, and power is transmitted from the PTO shaft to each drive unit of the implanting device 3.

On both left and right sides of the transmission case 5,
An upper portion of a transmission case 65 having a lower portion supporting the rear wheel 11 is rotatably supported around the output shaft 64. In this transmission case 65, a chain winding transmission mechanism 66 is provided, and power is transmitted from the output shaft 64 to the axle 67, and the rear wheel 11 is rotated by the power of the engine 7. ing.

The positions of the left and right transmission cases 65 can be independently changed to two positions in the left and right direction, and the distance of the rear wheel 11 can be adjusted by moving the transmission case 65 left and right. In addition, it is possible to cope with the difference (wide and narrow) in the ridge width between the entire multi ridge and the high ridge. In the illustrated example, the right and left front and rear wheels 10 and 11 are positioned when the transmission case 65 is set to the wide position, and the left and right front and rear wheels 10 and 11 are set when the transmission case 65 is set to the narrow position. However, during normal use, the left and right positions are set to the wide position or the narrow position.

The left and right rear wheels 11 are fixed to the axle 67 by pins, and a plurality of pin insertion holes formed in the axle 67 are formed in the axial direction, so that the left and right positions of the rear wheel 11 can also be adjusted. It has been. A rolling shaft 68 disposed in the left-right direction is supported at the front-rear intermediate portion of the gantry 6 via a bearing 69 so as to be rotatable around the left-right axis and movable back and forth. A lifting cylinder 70 composed of a hydraulic cylinder is arranged in front and fixed to the gantry 6. This lifting cylinder 70
The piston rod 70A of the
8 is connected via a cylindrical body or the like that is rotatably fitted to the outside, and the rolling shaft 68 can be moved back and forth by the reciprocation of the piston rod 70A.

The rolling shaft 68 can be fixed to the gantry 6 by fixing means. Brackets 71L and 71R are fixed to the left and right sides of the rolling shaft 68, front connection brackets 72L and 72R are fixed to the left and right front wheel support shafts 61, and rear connection brackets 73L and 73R are fixed to the left and right transmission cases 65. The right bracket 71R projects downward, and the left bracket 71L and the front and rear connection brackets 72L, 72L are provided.
R, 73L, and 73R are projected upward.

The brackets 71L, 71R and the rear connection brackets 73L, 73R are connected by a connection link 74, and the front connection brackets 72L, 72R and the rear connection brackets 73L, 73R are connected by a connection rod 75. Note that a pair of left and right connecting portions of the brackets 71L, 71R and the front connecting brackets 72L, 72R are provided so as to be able to adjust the left and right position of the transmission case 65.

By moving the piston rod 70A of the elevating cylinder 70 back and forth, the right and left connecting links 74 are pushed and pulled back and forth, and the rear connecting bracket 73
L and 73R, the transmission case 65 swings up and down relatively to the traveling machine body 8, and the connecting rod 75 is pushed and pulled back and forth to connect the front connecting brackets 72L and 72R, the front wheel support shaft 61 and the mounting cylinder 62. Through the front wheel support arm 63
Swings up and down relatively to the traveling body 8, whereby the left and right front and rear wheels 10 and 11 simultaneously move up and down relative to the traveling body 8 and the front and rear wheels 10 and 11 contact the ground. As a result, the traveling machine body 8 inevitably moves up and down with respect to the ridge R, and can follow the change in the height of the upper surface of the ridge R to move the transplanting device 3 up and down.

A rolling cylinder 76 composed of a hydraulic cylinder is mounted on the gantry 6 so as to move along with the rolling shaft 68, and a piston rod 76 A of the rolling cylinder 76 is pivotally mounted on a bracket 58 fixed to the rolling shaft 68. ing. Therefore, by moving the piston rod 76A of the rolling cylinder 76 back and forth, the rolling shaft 68 rotates around the left and right axis, one of the left and right connection links 74 is pulled forward, and one of the left and right connection rods 75 is moved forward. The left and right connecting links 74 are pushed rearward while the other right and left connecting rods 75 are pulled rearward, and the left and right front and rear wheels 10 and 11 move up and down in mutually opposite directions. As a result, the traveling body 8 and the transplanting device 3 can be maintained in a horizontal state even on a slope.

An elevating control valve 78 for controlling the elevating cylinder 70 is fixed on the transmission case 5, and a rolling control valve (not shown) for controlling the rolling cylinder 76 is disposed above the control valve 78. I have. As shown in FIGS. 7 and 9, a grounding roller 80 that rolls on the upper surface of the ridge R is disposed below the rear side of the transmission case 5 and in front of the planting body 13. It also serves as a pressure-reducing wheel that suppresses the upper surface of the ridge R. On both left and right sides of the ground roller 80, a swing arm 81 is disposed so as to be inclined forward and rearward. The swing arm 81 is supported by a support shaft 82 whose front portion penetrates the arm 81 and is screwed to the transmission case 5 so as to be swingable around the left and right axes, and has a rear portion via a pivot shaft 83. A grounding roller 80 is rotatably mounted around the left and right axes.
As 0 follows the change in the height of the ridge upper surface, the swing arm 81 swings around the support shaft 82 to detect a change in the height of the ridge R.

The left and right swing arms 81 have their front and rear portions connected to each other, and the lower end of an interlocking arm 86 arranged in the vertical direction rotates about the axis of the support shaft 82 on the left support shaft 82. It is freely supported. An arc-shaped long hole 87 of the arm 86 is formed in the upper part of the interlocking arm 86.
A pin 88 is slidably fitted to 7, and this pin 88 is pivotally connected to one end of an elevating valve arm 89 shaped like a side view. An intermediate portion of the elevating valve arm 89 is rotatably supported on the body of the elevating control valve 78 via a support shaft 90 around a left-right axis. An engaging groove is provided at the other end of the elevating valve arm 89. 91 are formed.

A pin 93 provided at one end of an operation lever 92 composed of a bell crank is engaged with the engagement groove 91 of the elevation valve arm 89. Attached to the rotating spool 94 of the valve 78. At the lower rear portion of the interlocking arm 86, an operation lever 95 constituted by a bell crank is pivotally mounted via a support shaft 96 so as to be rotatable around a left-right axis. The upper end of the link 98 is rotatably pivoted around the left-right axis via a shaft 96, and the lower end of the link 98 is turned around the left-right axis via a support shaft 99 on the swing arm 81. It is pivoted freely.

The other end of the operating lever 95 has a pivot 10
0 is provided so as to be rotatable around the left-right axis, and the front end side of the rod 101 is movable in the axis direction of the rod 101 in a direction orthogonal to the axial direction of the pivot 100. A stopper member 102 disposed between the front end of the rod 101 and the pivot 100 is fixed to the rod 101, and the rod 101
A coil spring 104 disposed between the spring receiving member 103 fixed to the middle of the shaft and the pivot 100 is externally fitted in a compressed manner.

As shown in FIGS. 7, 8 and 10, the rear end of the rod 101 is mounted on a support plate 106 fixed to a cylindrical body 105 which is rotatably fitted to the support shaft 58. Is rotatably pivoted about the axis of the. This support plate 1
05, a ground roller height adjustment lever 107 is fixed, and the ground roller height adjustment lever 107 is
The swing operation can be performed around the center of the shaft.

A guide plate 108 is fixed to the support shaft 58 so as to be rotatable integrally. The guide plate 108 is formed with a guide groove for allowing the ground roller height adjusting lever 107 to swing. In this guide groove, a plurality of locking portions for restricting the swing of the ground roller height adjusting lever 107 are formed at intervals in the swing direction of the ground roller height adjusting lever 107.

As shown in FIGS. 7 and 9, the movable frame 12B and the elevating valve arm 89 are linked by an interlocking mechanism 110. The interlocking mechanism 110 includes a lever 111 composed of a bell crank rotatably attached to the fixed frame 12A around a left-right axis, and a link 112 for interlockingly connecting one end of the lever 111 to the movable frame 12B. And an interlocking rod 114 interlockingly connecting the other end of the lever 111 and a connecting plate 113 fixed to the elevating valve arm 89.

The link rod 114 and the connecting plate 113 are connected to each other by a pin 115 pivotally attached to the connecting plate 113.
4 is a longitudinal groove 1 formed in the engaging plate 116 fixed to the front and rear direction.
17 are slidably fitted to each other so as to be linked to each other. In the above configuration, when the ground roller 80 is lowered, the swing arm 81 and the interlocking arm 86 move
Around this, the valve arm 89 is swung clockwise in FIG.
Pivots around the support shaft 90 in the counterclockwise direction in FIG. 9, whereby one end of the operation lever 92 is pulled up, and the rotary spool 94 of the elevation control valve 78 is operated in the direction of lowering the traveling machine body 8. , Piston rod 7 of lifting cylinder 70
0A operates in the evacuation direction, and the traveling machine body 8 descends until the rotary spool 94 returns to the neutral position.

When the ground roller 80 is raised, the swing arm 81 and the interlocking arm 86 are rotated around the support shaft 82 in the counterclockwise direction in FIG.
9, whereby one end of the operating lever 92 is pulled down, and the rotating spool 94 of the elevating control valve 78 is operated in a direction to raise the traveling machine body 8, and the elevating cylinder 70 The traveling body 8 rises until the piston rod 70A operates in the projecting direction and the rotating spool 94 returns to the neutral position.

When the earth covering wheel 15 is lowered, the interlocking mechanism 1 is moved.
10, the elevating valve arm 89 rotates counterclockwise in FIG.
Is lifted and the rotary spool 94 of the lift control valve 78 is operated in the direction of lowering the traveling machine body 8, the piston rod 70A of the lift cylinder 70 operates in the retracting direction, and the rotary spool 94 is in the neutral position. The traveling body 8 descends until returning.

When the earth covering wheel 15 is raised, the interlocking mechanism 1 is moved.
The lifting valve arm 89 is rotated clockwise in FIG. 9 around the support shaft 90 via the lever 10, whereby one end of the operating lever 92 is pulled down, and the rotating spool 94 of the lifting control valve 78 moves the traveling machine body 8. The moving body 8 is operated until the piston rod 70A of the elevating cylinder 70 operates in the protruding direction and the rotary spool 94 returns to the neutral position.
Rises.

In this structure, when the ground roller 80 and the earth covering ring 15 are both on the ridge R, the pin 115 is not moved even if the movable frame 12B swings up and down.
17, the control valve 78 is not affected, and the grounding roller 80 controls the lifting and lowering of the traveling machine body 8 in accordance with the change in the height of the upper surface of the ridge R. . Further, when planting near the outlet (front end in the planting direction) of the ridge R, when the contact roller 80 comes off the ridge R or when the height of the ridge R changes greatly, the covering soil ring The reference numeral 15 serves as a ground roller for detecting the height of the upper surface of the ridge R in order to control the elevation of the traveling machine body 8.

In the above-described structure, when the planting depth is adjusted, the pin 115 is positioned at the center of the elongated groove 117 (the movable frame 12B is substantially at the center between the upper limit position and the lower limit position). The vertical position of the grounding roller 80 with respect to the traveling machine body 8 must be adjusted so as to be positioned. In the above-described configuration, the guide plate 108, The ground roller height adjustment lever 107 swings along with it, and the rod 101 is pushed and pulled back and forth, whereby the operation lever 95,
The swing arm 81 swings up and down around a support shaft 82 via a link 98 so that the vertical position of the ground roller 80 is adjusted. The vertical position adjustment is also performed.

In the case of climbing a sloping land or in a wet field, the rear wheel 11 sinks and the transplanter 1 moves upward. In this case, the contact roller height adjusting lever 107 is swung forward. By changing the locking position of the ground roller height adjusting lever 107, the swing arm 81 is swung downward via the rod 101, the operating lever 95, and the link 98, and the height of the ground roller 83 can be adjusted. It is configured to be able to do it.

The other end of the operating lever 92 is hooked to one end of a sensitivity spring 119 composed of a tension spring, and the other end of the sensitivity spring 119 is fixed to the fixed frame 12.
The pressing force of the grounding roller 80 against the upper surface of the ridge R can be changed by changing the position where the sensitivity spring 119 is hooked on the hooking member 120 because it is hooked on the hooking member 120 attached and fixed to the A side. Thereby, the following sensitivity of the ground roller 80 to the upper surface of the ridge R can be adjusted.

[0061]

According to the present invention, the perforated body is separated from the plant in the ascending position, and is close to the plant when descending to form the planting hole in the multi-film. Therefore, it is possible to make the seedlings and the supply position of the seedlings coincide with each other, and to perform good delivery of the seedlings.

[Brief description of the drawings]

FIG. 1 is a side view of a punching device.

FIG. 2 is a side view of the planting section.

FIG. 3 is a side view of the transplanter.

FIG. 4 is a side view of an implant side.

FIG. 5 is a plan view of the traveling body.

FIG. 6 is a side view of the interlocking mechanism of the front and rear wheels.

FIG. 7 is a side view of a ridge height detection mechanism and a planting depth adjustment mechanism.

FIG. 8 is a side view of a planting depth adjusting mechanism.

FIG. 9 is a side view of a ridge height detection mechanism.

FIG. 10 is a rear view of a support portion of the planting depth adjusting lever.

FIG. 11 is a schematic side view showing the relationship between an implant and a perforated body.

FIG. 12 is a view showing a ground locus of a planting body.

[Explanation of symbols]

 2 Running body 13 Planting body 16 Drilling body 31 Elevating mechanism H1 Planting hole H2 Transplanting hole M Multi-film R Ridge

Claims (1)

[Claims] 1. A perforated body and a planting body are supported at the back of a traveling body so as to be able to move up and down, and the perforated body is lowered to contact a multi-film, thereby forming a planting hole in the multi-film. By lowering the attachment and projecting into the ridge from the planting hole formed by the perforated body, a transplanting hole is formed in the ridge, and the seedling is dropped and released into the transplanting hole, so that the seedling is planted in the ridge while running. The transplanting machine according to claim 1, further comprising an elevating mechanism for supporting the boring body closer to the implant as the boring body is lowered.