JP2883899B2 - Rice transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice transplanter, and more particularly, to a rice transplanter provided with a vertical feeding device at an intermediate position in a seedling feeding direction of a seedling table.

[0002]

2. Description of the Related Art Conventionally, this seedling transplanter supports a seedling mounting table so as to be able to reciprocate in the machine width direction, and a seedling set on a seedling mounting surface of the seedling mounting table below the seedling mounting table. Planting claw to take out from the lower side and plant it on the soil surface of the paddy field, and a vertical feeding device comprising a transport belt with a projection or the like is arranged at an intermediate portion of the seedling mounting table in the seedling feeding direction, and the seedling mounting table is provided. When is moved to both end positions in the machine width direction by the reciprocating motion, the transport belt is rotated by a predetermined pitch, and the set seedlings on the seedling mounting table are forcibly transported to the planting claw side by the protrusions of the transport belt. Then, while ensuring that the seedlings are taken out by the planting claws, the lower side of the vertical ribs arranged on both sides of the seedling mounting surface of the seedling mounting table has a predetermined gap between the seedling mounting surface and the seedling mounting surface. Attach a seedling holder that extends upward at an interval with an interval, and set the seedlings from above with the seedling holder. By elastically pressing against the side, the set seedling conveyed to the planting claw side by the vertical feeding device is prevented from floating or causing lateral displacement, and the removal of the seedling by the planting claw is reliably and well performed. To do it. Further, in order to prevent interference with the planting claw, the seedling presser may be configured such that a mounting base of the seedling presser is located at a lower side of a vertical rib in the seedling mounting table, and a seedling is provided by the planting claw of the seedling mounting table. It is supported above the take-out location, and extends upward from this support site along the seedling mounting surface of the seedling mounting table.

[0003]

However, in the above arrangement, the mounting base of the seedling holder is supported above the seedling receiving plate below the vertical ribs of the seedling mounting table, and from the support portion. Since it is extended upward along the seedling mounting surface of the seedling mounting table, in a portion facing the seedling presser on the upper side of the seedling mounting table, a good seedling holding effect by the seedling holder can be obtained. Although it can be exerted, a non-pressed portion of the seedling where the seedling press does not act occurs near the place where the seedling is removed by the planting claw on the lower side of the seedling mounting table, and the non-pressed portion, that is, removal of the seedling by the planting claw. In the vicinity of the place, the set seedlings floated up or shifted sideways, so that the seedlings could not be taken out by the planting claws, resulting in a problem of lack of stock.

[0004] It is an object of the present invention to prevent the seedlings set on the seedling table from floating or laterally shifting not only on the upper side of the seedling table but also on the lower end near the place where the seedlings are taken out by the planting claws. It is an object of the present invention to provide a rice transplanter that can reliably prevent the occurrence of seedlings, reliably and satisfactorily take out seedlings with a planting claw, and increase planting accuracy without causing a lack of stock.

[0005]

In order to achieve the above object, the present invention relates to a rice transplanter provided with a vertical feeding device 9 at an intermediate portion of the seedling mounting table 85 in the seedling feeding direction. A main seedling holder 10 and a sub-seedling holder 20 for pressing the seedlings placed on the seedling mounting surface of the seedling mounting table 85 against the seedling mounting surface side, and these seedling holders 10, 20 are independently moved up and down, respectively. Adjustably supported, and the sub seedling presser 20 is disposed inside and outside of the main seedling presser 10 in the machine width direction, and
The sub seedling presser 20 was formed of an elastic wire having a diameter smaller than that of the main seedling presser 10.

[0006] The sub-seedling presser foot 20 and the main seedling footed foot 10
Is preferably wrapped in the seedling feeding direction, and the wrap portion is preferably located near the lower end of the vertical feeding device 9.

[0007]

On the upper side of the seedling mounting table 85, the set seedlings on the seedling mounting table 85 conveyed by the vertical feeding device 9 are:
The main seedling holder 10 is pressed against the placement surface side of the seedling mounting base 85, and at the lower end side of the seedling mounting base 85 near the place where the seedling is taken out by the planting claw, the set seedling is set by the sub-seedling holder 20. The seedling holder 85 is pressed against the placement surface side. Therefore, the seedling holder 85 is substantially extended from the upper side of the seedling holder 85 to the lower end near the seedling take-out point by the planting claw at each of the seedling holders 10 and 20. Over the entire range, it is possible to reliably prevent the set seedlings being conveyed from floating or causing lateral displacement, and to reliably and satisfactorily take out the seedlings by the planting claws without inducing the occurrence of a lack of stock. Planting accuracy can be improved. In addition, each of the seedling pressers 10, 20
Are supported independently so that they can be adjusted up and down independently, so that the height of the seedling holders 10 and 20 with respect to the set seedlings can be individually set in accordance with the state of the seedlings set on the seedling mounting table 85 and the like. When the seedlings can be adjusted up and down, for example, when the number of set seedlings on the seedling mounting base 85 is reduced and the seedlings are placed only on the lower side of the seedling mounting base 85 facing the sub-seedling holder 20. By adjusting the height of the sub-seedling presser 20 to the lower side to increase the pressing force of the seedling by the sub-seedling presser 20, it is possible to reliably prevent the seedling from turning up or forming into a dumpling. The seedlings can be satisfactorily taken out by the planting claws, and the sub-seedling presser 2
0 is arranged inside and outside of the main seedling presser 10 in the machine width direction, so that the seedling holding effect by the planting claw near the place where the seedlings are taken out by the planting claw is reliable and good under the seedling mounting table 85. The seedlings can be more reliably taken out by the planting nails, and the planting accuracy can be improved. Further, the sub-seedling presser foot 20 is provided with the main seedling footed foot 1.
Since it is formed of an elastic wire material having a diameter smaller than 0, the sub-seedling presser 20 is made lightweight and does not cause a large increase in the body weight. It is possible to exert a reliable holding effect of the set seedling by the sub-seeding holder 20.

[0008] The sub-seedling presser foot 20 and the main seedling footed foot 10
When the wrap portion is wrapped in the seedling feed direction and the wrap portion is located near the lower end of the vertical feed device 9,
It is possible to more reliably prevent the set seedlings from turning over and laterally displaced immediately after passing through the vertical feeding device 9.

[0009]

FIG. 6 shows a riding type multi-row type rice transplanter. This rice transplanter has an engine 2 mounted on the front upper portion of an airframe 1 and the outer periphery of the engine 2 is covered with a bonnet 3. At the same time, a driver's seat 4 provided with a control seat 41 and a steering wheel 42 is provided at an upper rear portion of the fuselage 1, and a pair of left and right front wheels 5 is supported on both front sides of the fuselage 1, and
A pair of right and left rear wheels 6 driven by the engine 2 are supported on both rear sides of the body 1. In addition, a seedling plant 8 is supported at the rear of the body 1 via a parallel link mechanism 7 having a top link 71 and a pair of left and right lower links 72 so as to be vertically movable. 8
Is a planting case 81 to which rotational power is transmitted from the engine 2, a plurality of transmission cases 82 supported so as to be able to transmit power in the body width direction of the planting case 81, and the transmission case 82 is rotatable freely. The plant includes a plurality of supported planting claws 83, a plurality of floats 84 that receive and support the entire load of the seedling planting device 8, and a seedling mounting table 85 that is entirely reciprocated in the machine width direction.

More specifically, as shown in FIGS. 1 and 5, the seedling mounting table 85 has a plurality of vertical ribs 85a and a seedling mounting surface disposed on the bottom side between the vertical ribs 85a. And a bottom plate 85b, and an opening plate 85c provided at the lower end of the bottom plate 85b. The upper and lower portions on the rear side of the bottom plate 85b extend vertically in the body width direction as shown in FIGS. Rail frames 85d and 85e are provided, and a rolling element 87 provided on a support rod 86 extending upward from the planting case 81 is inserted into the upper rail 85d, and the lower rail frame 85e is transmitted through the lower rail frame 85d. It is slidably supported on a guide rail 89 fixed to a bracket 88 extending from the case 82, and the entire seedling mounting table 85 can reciprocate in the width direction with respect to the machine body 1 via the respective rail frames 85d and 85e. And Further, the guide rail 89 is provided with a seedling extraction plate 89a having a plurality of slits disposed below the seedling mounting table 85. The nails 83 are pushed in, and the seedlings 83 are taken out of the seedling mounting table 85 by the planting nails 83 and are planted on the paddy soil surface.

When the seedling rest 85 moves to both ends in the machine body width direction by reciprocating motion, the set seedlings on the bottom plate 85b are placed at the middle part of the seedling rest 85 in the vertical direction. A vertical feeding device 9 for forcibly transporting the seedlings on the bottom plate 85b by the vertical feeding device 9 to the planting nails 83 side by the vertical feeding device 9 is provided on the side.
To securely take out the seedlings from the seedling mounting table 85.

The vertical feeding device 9 is provided between the vertical ribs 85a, and a plurality of the vertical feeding devices 9 are provided corresponding to the number of planting strips.
As shown in FIGS. 1 and 5, each of these vertical feeders 9
A plurality of support frames 9 disposed on the rear side of the bottom plate 85b of the seedling mounting table 85 in the vertical direction in the body width direction.
1, common driven and drive shafts 92 and 93 supported on the upper and lower portions of each support frame 91, and the respective shafts 92 and 93
Driven and driven rollers 9 rotatably supported by
4 and 95 and the rollers 94 and 95,
A plurality of transport belts 96 having a large number of protrusions 96a protruding outward with respect to the bottom plate 85b of the seedling mounting table 85 are provided. Further, as is apparent from FIG.
A drive shaft 93 protruding from both sides of the transport belt 96 below the support frame 91 located at the center in the machine body width direction at the longitudinal middle portion, and a one-way clutch 97a is provided on at least one side. A pair of cylindrical rotators 97, 97 are provided, and each of these rotators 97 is provided.
The swinging arm 97b projecting from the connecting belt 97 extends in the body width direction and is connected by a connecting member 97c having a substantially inverted L-shaped cross section. The cam body 98 is attached to the center position in the width direction, and the rotating shaft 100 that constantly rotates during the seedling planting operation is protruded to both sides from the planting case 81 by the internal transmission mechanism. Are provided with operating arms 99, 99 having a rotor 99a to be brought into contact with the cam body 98.

When the seedling mounting table 85 moves to one end in the machine body width direction during the seedling operation, the cam body 98 faces one of the operating arms 99, 99 which is always rotating. By pushing the cam body 98 with the rotor 99a of the operation arm 99, the connecting member 97 is pushed.
c, the drive arm 93 is rotated by a predetermined angle through the one-way clutch 97a, and the transport belt 96 is rotated by a predetermined pitch in the seedling feed direction. The seedlings set on the seedling mounting table 85 by the projections 96a provided on the belt 96 are forcibly conveyed to the planting claws 83 side.
3 to ensure that the seedlings are extracted and planted on the paddy soil surface.

Thus, in the rice transplanter described above,
A main seedling holder 10 and a sub-seedling holder 20 for pressing the seedlings set on the seedling mounting surface of the seedling mounting base 85 against the seedling mounting surface are disposed below the seedling mounting base 85. Presser foot 10, 20
Are supported so as to be vertically adjustable independently of each other, and the sub-seedling presser foot 20 is formed of an elastic wire having a diameter smaller than that of the main seedling presser foot 10.

More specifically, as shown in FIGS. 1 and 2, each of the vertical ribs 85a of the seedling mounting table 85 is attached to the lower part of each of the vertical ribs 85a by the planting claw 83. A plurality of substantially L-shaped rods protruding into the seedling mounting table 85 from a nearby upper portion and extending upward from the vertical feeding device 9 at a predetermined interval between the seedling mounting table 85b and the bottom plate 85b. The main seedling holders 10 are attached, and the set seedlings on the bottom plate 85b conveyed by the vertical feeding device 9 are elastically pressed from above with each of the main seedling holders 10, so that the set seedlings rise or move laterally. While preventing
By taking out the seedlings with the planting claws 83, the planting claw 83 can take out the seedlings from the seedling mounting table 85 reliably and satisfactorily, thereby increasing the planting accuracy.

Each of the main seedling holders 10 is supported on a vertical rib 85a of the seedling mounting base 85 via a height adjusting device A so as to be vertically movable independently of the sub-seedling holder 20. Each of the main seedling holders 1 is set in accordance with the size of the seedlings set on the seedling mounting table 85 by the height adjusting device A, the state of softness, and the like.
By performing the height adjustment of 0, the seedling set 85 can be reliably and smoothly transported and supplied to the planting claw 83 side in any state, without causing the occurrence of a lack of stock.
The planting claws 83 allow a reliable planting operation.

More specifically, the height adjusting device A of the seedling presser 10 is configured as shown in FIGS. 1 and 2, that is, at the lower side of the vertical rib 85 a of the seedling mounting table 85, A mounting base 11 having a tubular portion 11a was fixed to an upper portion near the place where the seedlings were removed by the planting claws 83 via a fixing bracket B such as a bolt, and bent into a rectangular shape on the tubular portion 11a. The support 12 is inserted and fixed, and the support 1 is fixed.
A plurality of locking grooves 12a are formed in the upper end side of the upper part 2 in a vertically stepped manner, and a cylindrical support 13 is movably inserted into the column 12. In addition, a connecting plate 14 is integrally attached to the lower side of the peripheral surface of the support body 13, and the connecting plate 14 is provided with a shaft rod 14 a protruding in the machine body width direction, and a base end side of the main seedling presser 10. Is provided with a cylindrical shaft 10a.
a is inserted into and supported by the shaft rod 14a, and a bracket 15 having a substantially U-shape is integrally attached to the upper side of the peripheral surface of the support 13 facing the connecting plate 14, and the bracket 15 is At the tip, a locking groove 12a of the support 12
A substantially L-shaped holder 16 made of an elastic material having an engaging portion 16a elastically engaged with the holding member 16 is always urged in the engaging direction of the engaging portion 16a into the locking groove 12a. In this state, the operation piece 17 is fixed via a fixing bracket B such as a bolt or a nut, and the tip of the holding body 16 is provided with an operation piece 17 capable of releasing the engagement of the engagement portion 16a with the engagement groove 15a. Is attached via a fixing bracket B such as a bolt or a nut.

Further, near the mounting portion of the main seedling holder 10 in the vertical rib 85a of the seedling mounting base 85, the seedling removal of the guide rail 89 from the vicinity of the mounting portion along the bottom plate 85b of the seedling mounting base 85. A substantially L-shaped sub seedling presser 20 extending from the main seedling presser 10 and made of an elastic wire such as a piano wire having a diameter smaller than that of the main seedling presser 10 is provided. By pressing the set seedling near the seedling extraction plate 89a of the stand 85 against the seedling mounting surface, the seedling extraction plate 89a, that is, the seedling positioned near the seedling extraction location by the planting claw 83 is lifted or laterally shifted. This ensures that the seedlings 83 can be taken out of the seedlings reliably and satisfactorily without causing a lack of stock.

Further, the sub-seedling holder 20 is supported individually and vertically movable via a height adjusting device C different from the height adjusting device A on the main seedling holder 10 side. According to the condition of the seedlings set on the mounting table 85, the height of the seedling holders 10 and 20 with respect to the set seedlings can be individually and independently adjusted up and down.
When the number of the set seedlings on the top 5 decreases and the seedlings are placed only on the lower side of the seedling mounting table 85 facing the sub-seeding holder 20, the height of the sub-seeding holder 20 is lowered. By increasing the pressing force of the seedling by the sub-seedling presser 20, the seedling is reliably prevented from turning up or forming into a dumpling, and the seedling can be taken out by the planting claw 83 satisfactorily. To do so.

More specifically, the height adjusting device C of the sub-seedling holder 20 is configured as shown in FIGS. 1 and 2, that is, the height adjusting device C provided on the vertical rib 85a of the seedling mounting base 85. An adjustment plate 23 having an elongated hole 22 extending in the vertical direction is supported via a bracket 21 on the lower side in the vicinity of the mounting base 11, and a fixing bracket B such as a bolt or a nut is inserted into the elongated hole 22 of the adjustment plate 23. The support 24 bent in a substantially L-shape is mounted so as to be vertically adjustable, and the mounting base of the sub seedling presser 20 is disposed on the support 24, while the outer side of the support 24 on the mounting base. Fixing bracket B
The upper and lower two presser plates 25 and 26 are movably provided via a spring. A spring 27 is interposed between the respective presser plates 25 and 26 around the fixture B, and the elastic force of the spring 27 By elastically pressing and supporting the mounting base side of the sub-seedling presser 20 via each of the holding plates 25 and 26, the sub-seedling presser 20 is attached to the elongated hole 2 with the support 24.
The support 24 is elastically pressed and supported so as to be adjustable up and down in the range of 2.

As shown in FIG. 2, the sub-seedling presser 20 is formed into a substantially U-shape in plan view having two pressers 20a and 20b.
b is pressed and supported on the support 24 side by the holding plates 25 and 26 in which the springs 27 are interposed, and the holding portions 20a and 20b are held by the main seedling holding 10
Are arranged on both sides of the machine in the width direction. In such a configuration, the holding portions 20a and 20b of the sub-seeding presser 20 reliably and favorably maintain the seedling holding effect near the seedling take-out position by the planting claws 83 below the seedling mounting table 85. The seedlings can be reliably taken out by the planting claws 83 and planting accuracy can be improved.

Next, the operation of the above configuration will be described. During the seedling operation by the rice transplanter, the seedling table 85
When adjusting the height of the main seedling presser 10 with respect to the bottom plate 85b of the seedling mounting base 85 according to the size of the seedlings set in the small or soft state, first configure the height adjusting device A. The operation piece 17 is pushed with a finger or the like against the elastic urging force of the holding body 16.
6 is easily detached from the locking groove 12a of the support 12, and the support 13, that is, the seed presser 10 is free to move with respect to the support 12, so that the support 13 The height of the seedling holder 10 is adjusted so that the seedling holder 10 is at the optimum height with respect to the seedling set on the bottom plate 85b while moving the seedling vertically with respect to the support column 12. By releasing the finger from the operation piece 17 after this adjustment, the engaging portion 16a of the holding body 16 is easily engaged with the locking groove 12a of the support 12 by the elastic biasing force, and the support 1
The support 13, that is, the seedling presser 10, is fixed to a predetermined optimum height position with respect to 2.

Therefore, the seedling presser 10 for the support 12
Of the seedling presser 1 is prevented by the holding body 16.
0 can be reliably held at the optimal height position for the set seedlings on the seedling mounting table 85, and the set seedlings can be securely and firmly placed on the side of the planting claws 83 without causing the set seedlings to float or shift sideways. It can be smoothly transported and supplied, and the height of the seedling presser 10 can be easily adjusted by operating the operation piece 17 even at a seedling planting work site such as a paddy field.

The sub-seedling presser 20 is disposed on the lower end side of the seedling mounting table 85 near the attachment portion of the main seedling presser 10 and near the place where the seedlings 83 are taken out of the seedlings. The set seedlings of the seedling holder 85 are pressed against the mounting surface side by the sub seedling holder 20, so that the main seedling holder 10 exerts a holding effect on the set seedlings on the upper side of the seedling holder 85. Not only that, but also on the lower end side near the place where the seedling is removed by the planting claw 83,
Thereby, it is possible to reliably prevent the set seedlings from floating or causing lateral displacement, and to reliably and satisfactorily take out the seedlings with the planting claws 83 without causing the occurrence of a lack of stock, thereby improving the planting accuracy. Can be enhanced.

Further, the sub-seedling presser 20 is adjusted independently of the main seedling presser 10 in accordance with the condition of the seedling set on the seedling mounting table 85 by the height adjusting device C. For example, the set seedlings on the seedling mounting table 85 are consumed during the seedling work by the rice transplanter,
In the case where seedlings are placed only on the lower side of the seedling mounting table 85 facing the sub seedling holder 20, the seedling mounting table 8
5, the sub seedling presser 20 is adjusted downward with respect to the bottom plate 85b. That is, the support 24 on which the sub seedling presser 20 is supported is adjusted by loosening and tightening the fixing bracket B. It adjusts downward movement along the long hole 22 of
Then, the pressing force of the seedling by the sub-seedling presser 20 is increased, and it is possible to reliably prevent the seedling from turning up or forming into a dumpling, so that the removal of the seedling by the planting claw 83 can be performed well. it can. Further, the sub-seedling presser foot 20 is
Since the sub-seedling presser 20 is formed of an elastic wire having a diameter smaller than that of the main-seedling presser 10, the sub-seedling presser 20 can be made lightweight so that the sub-seedling presser 20 can follow the set seedling without causing a large increase in body weight. As good, a reliable pressing effect of the set seedling by the sub-seedling presser 20 can be exhibited. Further, in the embodiment of each drawing, the height adjustment amount of the sub-seedling presser 20 by the height adjusting device C is made larger than the height adjustment amount of the main seedling presser 10 by the height adjusting device A. The sub seedling presser 20 is provided so that it can be adjusted to be lower below the main seedling presser 10 than the main seedling presser 10, so that the seedlings are placed only on the lower side of the seedling mounting table 85. In such a case, the height of the sub seedling presser 20 is adjusted to be lower than that of the main seedling presser 10, so that the seedlings are prevented from turning up or forming a dumpling on the seedling mounting table 85, and the planting is performed. The removal of the seedlings by the claws 83 can be performed more favorably.

The main seedling presser foot 10 and the sub-seedling presser foot 20
As shown in FIG. 3, the lower part of the main seedling presser 10 and a part of the sub-seedling presser 20 are wrapped with each other in the seedling feed direction, and the wrap portion is located near the lower end of the vertical feeder 9. In this case, it is preferable that the set seedling immediately after passing through the vertical feeding device 9 is conveyed toward the planting claw 83 while continuously pressing the set seedling with the main seedling holder 10 and the sub-seedling holder 20. Therefore, it is possible to prevent the set seedlings from laterally displacing and turning up more favorably, and to reliably and satisfactorily take out the seedlings using the planting claws 83, thereby increasing the planting accuracy. Further, in the same figure, the rear side of the sub seedling presser 20 with respect to the mounting base is directed obliquely downward, and the rear end of the sub seedling presser 20 is bent rearward and upward by a predetermined α angle. When doing so, not only can the set seedlings be surely pressed by the sub-seeding holder 20, but also by the upwardly bent portion provided at the rear end side of the sub-seeding holder 20, By partially releasing the pressing force of the set seedlings, the seedlings can be satisfactorily taken out by the planting claws 83.

Further, the bottom plate 85 of the seedling mounting table 85
When the vertical feeding device 9 is interposed in the middle portion of the seedling feeding direction c, the transport belt 96 of the vertical feeding device 9 and the lower side of the bottom plate 85c facing the rear side in the transport direction of the transport belt 96 Since a gap is formed between the seedlings, the set seedlings of the seedling mounting table 85 are conveyed toward the planting claws 83 by the conveyance belt 96. Such was easy to occur. Therefore, in FIG. 4, the upper side of the bottom plate 85c located on the front side of the transport belt 96 in the transport direction and the bottom plate 8 located on the rear side of the transport belt 96 in the transport direction.
A step having a predetermined height t is provided on the lower side of the bottom plate 85c so that the lower side of the bottom plate 85c is lower than the upper side.
Can be quickly conveyed to the lower side of the set so as to prevent the set seedling from turning up. Further, as shown in the figure, it is preferable to provide a bent portion whose tip is directed inward and downward, as shown in the figure, at the upper and lower side edges of the bottom plate 85c facing the conveyor belt 95. The transport of the set seedlings from the upper side of the bottom plate 85c to the transport belt 96 and the transport of the set seedlings from the transport belt 96 to the lower side of the bottom plate 85c can be performed reliably and smoothly.

[0028]

As described above, according to the present invention, in a rice transplanter provided with the vertical feeding device 9 at an intermediate portion in the seedling feeding direction of the seedling mounting base 85, the seedling mounting base is provided below the seedling mounting base 85. 85
The main seedling presser 10 and the sub seedling presser 20 that press the seedlings placed on the seedling mounting surface of the plant to the seedling mounting surface side are arranged, and these seedling pressers 10 and 20 are independently supported so as to be vertically adjustable. In addition, since the sub seedling presser 20 is formed of an elastic wire having a smaller diameter than the main seedling presser 10, each of the seedling pressers 1
At 0,20, it is ensured that the seedlings rise or move laterally over almost the entire range of the seedling mounting 85 from the upper side of the seedling mounting 85 to the lower end near the place where the planting claws take out the seedlings. The seedlings can be reliably and satisfactorily taken out by the planting nails without increasing the number of stocks, and the planting accuracy can be improved. In addition, by supporting each of the seedling holders 10 and 20 independently so as to be vertically adjustable, the respective seedling holders 10 and 20 can be adjusted according to the state of the seedling set on the seedling mounting table 85 and the like.
The height of each of the 20 sets of seedlings can be individually adjusted up and down. For example, the number of set seedlings on the seedling mounting base 85 decreases, and the lower side of the seedling mounting base 85 opposed to the sub-seedling holder 20 is set. When only the seedlings are placed, the height of the sub-seedling retainer 20 is adjusted downward so that the pressing force of the sub-seedling retainer 20 for the seedlings is increased, and the seedlings are turned up or in a dumpling shape. Can be reliably prevented, and the seedlings can be satisfactorily taken out by the planting claws. In addition, the sub seedling presser 20 is arranged inside and outside the main seedling presser 10 in the machine width direction. By doing so, the seedling mounting table 85
And the seedling holding effect near the place where the seedlings are taken out by the planting claws can be reliably and satisfactorily exerted on the lower side of the plant. Thus, the seedlings can be taken out by the planting claws more reliably and the planting accuracy can be improved. Can be increased.

Further, since the sub-seedling holder 20 is formed of an elastic wire having a diameter smaller than that of the main seedling holder 10, the sub-seedling holder 20 can be made lighter without increasing the weight of the body. The followability of the sub-seedling presser 20 to the set seedlings is improved, so that the sub-seedling presser 20 can exert a reliable pressing effect on the set seedlings.

The sub-seedling presser foot 20 and the main seedling footed foot 10
Are wrapped in the seedling feeding direction, and the wrap portion is located near the lower end of the vertical feeding device 9, so that the set seedling immediately after passing through the vertical feeding device 9 can be more reliably turned up or laterally displaced. Can be prevented.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a main part of a rice transplanter according to the present invention.

FIG. 2 is a rear view of the same.

FIG. 3 is a side view showing an example of attachment of a main seedling presser and a sub-seedling presser.

FIG. 4 is a side view showing another example of the vertical feeding device.

FIG. 5 is a partially cutaway rear view of the vertical feeder.

FIG. 6 is a side view showing the entire structure of the rice transplanter.

[Explanation of symbols]

 85 Seedling stand 9 Vertical feeder 10 Main seedling holder 20 Sub-seedling holder

Claims (2)

(57) [Claims] In a rice transplanter provided with a vertical feeding device (9) at an intermediate portion of a seedling mounting table (85) in a seedling feeding direction, the seedling mounting (85) is mounted on a seedling mounting surface of the seedling mounting (85) below the seedling mounting (85). A main seedling presser 10 and a sub seedling presser 20 for pressing the seedlings against the seedling mounting surface are provided. Each of these seedling pressers 10 and 20 is independently supported so as to be vertically adjustable. Arranged inside and outside the machine width direction of the seedling presser foot 10, and
A rice transplanter characterized in that the sub-seedling presser foot 20 is formed of an elastic wire having a smaller diameter than the main seedling footed foot 10. 2. The rice transplanter according to claim 1, wherein the sub-planter presser foot 20 and the main seedling presser foot 10 are wrapped in the seedling feed direction, and the wrap portion is located near the lower end of the vertical feeder 9.