JPH086415Y2 - Transplanter seedling supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to an improvement of a transplanter, and in particular,
TECHNICAL FIELD The present invention relates to a seedling supply device suitable for transplanting elongated seedlings such as long onions.

Conventional technology Conventionally, transplanters such as long green onions have a belt conveyor in the horizontal direction in front of the driver's seat as a transfer mechanism for laterally transferring seedlings to a self-propelled vehicle, and the delivery end of this belt conveyor is The seedlings that intersect and intersect with each other are sandwiched between a pair of conveyor belts that are provided in a facing state, and have a lower conveyance mechanism that conveys the seedlings downward.
The seedlings were sandwiched between a pair of rubber-planted discs and received,
Rotate the angle of the seedlings by about 90 degrees to make them stand upright with the roots down, and stand them up in the planting groove created by the open groove device of the transplanter. It is known that the root is covered with soil by a mulcher, a compaction wheel, etc. as a planting mechanism provided in the plant, and the plant is pressed down on the soil. (See JP-A-62-228205).

Problem A mechanism that changes the holding posture of the seedling from the horizontal state to the upright state by such a disc with rubber planting is a seedling with a short length, for example, 30 cm at most, like spring onion seedlings. Although there is not much trouble in planting plants of the order, those that reach 40 to 50 cm, such as green onion seedlings after summer, have their leaf tips entwined with each other when the posture is changed by the planting disc. However, there are inconveniences such as falling down and tilting at the time of planting, and it is difficult to plant at equal intervals. In order to avoid such a situation, if the diameter of the planted disc is increased, the position of the transport belt of the transport mechanism of the seedlings related to this and the mounting position of the drive system member of the disc and the belt must be moved upward. There was a dilemma that the entire transplanter became large and the operability deteriorated because it could not be obtained.

For this reason, when planting long onion seedlings, such as when planting in summer or autumn, unavoidably cut off the leaves to reduce the overall length to half. Planting with a transplanter is performed, but this is a drawback that affects the growth of seedlings after planting because it cuts off nearly half of the leaf stems, including the growth points important for seedling growth. was there.

Purpose of the Invention The present invention avoids the drawbacks of the conventional transplanter as described above,
Not to mention short seedlings, thin and long seedlings can be planted as they are without the need to cut short, like the spring onion seedlings other than spring. It is an object of the present invention to disclose a transplanter that can be used for transplanting a seedling having a complicated shape such as having a branched branch or having a ridge in the middle of a stem.

Configuration of the Invention The gist of the present invention is to connect a lateral transfer mechanism for laterally transferring seedlings and a delivery end of the lateral transfer mechanism near the upper part so that seedlings sent from the delivery side face each other. In a seedling feeding device of a transplanter equipped with a downward conveying mechanism for conveying to a lower seedling transplanting mechanism while being sandwiched between conveying belts, the downward conveying mechanism is stretched linearly in a descending state toward the ground. It is composed of a conveyor belt row formed by vertically arranging a plurality of opposed conveyor belt pairs, the conveyance speed of each of the conveyor belt pairs, the root side conveyor belt pair for sandwiching the root side of the seedlings. Move the belts in sequence from the root side conveyor belt pair toward the growth point side conveyor belt pair so that the speed of the growth point side conveyor belt pair that conveys the growth point side opposite to the root is fast. As the seedlings are transported, the speed is gradually reduced so that the seedlings can be planted. It is characterized in that its posture is changed from the lateral direction to a direction in which it stands upright while it reaches the plant, and is fed to the planting position in the most suitable posture according to the type of seedling. It is in the seedling supply device of the transplanter. Hereinafter, embodiments will be described in detail with reference to the drawings.

[Embodiment] FIGS. 1 and 2 show an outline of a long onion transplanter provided with a seedling feeding device A according to the present invention in a self-propelled vehicle C. The self-propelled vehicle C is an engine. The crawler belt is a crawler vehicle that travels by transmitting the output of 30 to a crawler belt 33 via a transmission 31 and a winding transmission device 32 such as a chain, and the crawler belt 33 travels in a planting groove D provided in advance.

The self-propelled vehicle C also has a handle 34 projecting in the traveling direction F, and an arm 35 is projectingly provided in a horizontal direction perpendicular to the projecting direction of the handle 34 (see FIG. 2). . Near the center of the arm 35, a seat 41 and a footrest step
42 is supported, and an auxiliary wheel 36 is attached to the end of the arm so that the auxiliary wheel 36 travels in a planting groove adjacent to the planting groove in which the crawler belt 33 travels. Has become. Therefore, the distance between the auxiliary wheel 36 and the crawler belt 33 can be expanded and contracted by a known mechanism so that it can be set in accordance with the pitch of the planting groove, and similarly, the arm
The distance from 35 to the contact surface of the auxiliary wheel 36 can also be expanded or contracted,
In both cases, the illustration of the mechanism is omitted.

On the opposite side of the steering wheel 34 of such a self-propelled vehicle C, one end is firmly fixed to the self-propelled vehicle C side.
7, 37, ... are projected, and the support frame 1 for supporting the transplantation device is fixedly held at the projecting end of the holding arms 37 ,. There is. The transplanting device comprises a seedling feeding device A and a planting mechanism B for planting the seedlings received from the feeding device. Further, the seedling feeding device A conveys the seedlings laterally as shown in FIG. The horizontal transfer mechanism E and the downward transfer mechanism G that transfers the seedlings sent from the horizontal transfer mechanism E toward the planting mechanism B. The lateral transport mechanism E is a rotary shaft rotatably supported by a frame structure (not shown) standing on the horizontal arm 1a of the support frame 1 extending in the left-right direction in front of the operator sitting on the seat 41. A plurality of (5 in the figure) equal-diameter pulleys 3a, 3a, which are provided at predetermined intervals, respectively on 2a, 2b,
, 3b, 3b, ... And V belts 14, 14 wound around the pulleys.

The rotation shafts 2a, 2b and, on the way from one rotation shaft 2a to the other 2b, pivotally support tension belts 15, 15, ... for preventing the belts 14, 14 from sagging due to the seedling load. Pivot 13
Is provided with a downward slope toward the seat 41 in accordance with the inclination of the support frame 1.

The green onion seedlings P are placed on the V-belt row in a direction orthogonal to the V-belts with the root side facing you. 16 (Figs. 1 and 3
(See the drawing) is a conveyor belt for aligning the root positions of the green onion seedlings and sending them to the downward transfer mechanism G when the green onion seedlings P are slid down and abutted against each other by the inclination of the V-belt row. Are provided so as to slightly project from the plane formed by the transport sides of the V belts 14, 14 ,. Reference numeral 16a is a pulley drive shaft, and 16b is a power transmission gear between orthogonal shafts connecting the rotary shaft 2a and the pulley drive shaft 16a.

The rotating shaft 2a is rotationally driven at a speed proportional to the traveling speed of the self-propelled vehicle C by a sprocket 39 fixed to the tip of the output side 38 from the transmission 31 and a sprocket 3 connected via a chain 40.

The upper end of the downward conveying mechanism G is connected to the delivery end of the lateral conveying mechanism E in such a manner that the upper portion of the downward conveying mechanism G intersects. The transport mechanism G has a frame structure (not shown) that stands on the inclined portion 1b of the support frame 1 so that the rotary drive shaft 5 is substantially parallel to the shaft 2a near the rotary shaft 2a of the lateral transport mechanism E. Are rotatably arranged side by side on the rotary drive shaft 5
A plurality of (four in the figure) drive pulleys 5a to 5d having a gradually decreasing radius are provided so as to be integrally rotatable with the rotary drive shaft 5 from the side closer to the side to the side farther from the side. This drive pulley 5a
Corresponding to .about.d, the same number of driven pulleys 7a.about.d are pivotally supported near the planting mechanism B near the lower portion of the support frame 1.
Between these drive shaft pulleys 5a-d and driven pulleys 7a-d,
Conveyor belts 8a to 8d each composed of an endless V-belt are wound around each. On the other hand, on the rotary shaft 2a, which is the drive shaft of the belt conveyor, a drive pulley having the same diameter as the drive pulleys 5a to 5d having different diameters is provided in the middle of each of the pulleys 3a, 3a, ... Pulleys 4a to 4d are also close to the root side of the green onion seedling.
4a has the largest diameter, and the growth point side of the green onion seedling has the smallest diameter, and can rotate integrally with the shaft 2a.
Further, driven pulleys 6a to 6d are axially supported on the support frame 1 at positions facing the driven pulleys 7a to 7d, and similarly, the driven pulleys 4a to 4d and the driven pulleys 6a to 6d are also supported. The conveyor belts 9a to 9d are mounted between the corresponding pulleys. The shafts 5 and 2a for driving these belt groups are erected at right angles to the support frame 1 inclined in the traveling direction, and the straight line connecting the driven pulleys 7a to d and 6a to d is Since it is provided so as to be substantially perpendicular to the ground, the length of the conveyor belt is longer on the root side and shorter on the growth point side.

Thus, the conveyor belts 8a and 9a, 8b and 9b, ..., 8d and 9d
A plurality of (4 in the figure
Individual conveyor belt pairs, and these conveyor belt pairs are arranged in four rows in substantially the same direction to form a conveyor belt row. The sprocket 5e provided at the end of the rotary drive shaft 5 is rotationally driven in synchronization with the rotary shaft 2a by connecting the output shaft 38 from the self-propelled vehicle C via the chain 40. . Reference numerals 10, 11, and 12 are tension pulleys.

The planting mechanism B includes a grooving device 21 having a wedge shape in a plan view, which is provided below the support frame 1, a clay wheel 22 for returning the soil scraped by the grooving device 21 to the groove, and a clay wheel. It is composed of a compaction wheel 23 that presses on the soil returned by the above, and the soil wheel 22 faces the driven pulleys 6a to 7d and 7a to 7d.

(Operation) In the long green onion transplanter according to the above-mentioned embodiment, the green onion seedlings are vertically placed on the V-belts 14, 14, ... From the seedling placement case (not shown) provided on the seat 41. , Place the root side along the conveyor belt 16. The green onion seedling reaches the delivery end (immediately above the shaft 2a) in the same posture, is sandwiched between the pair of conveyor belts of the downward conveying mechanism, and moves downward.
At this time, since the radii of the drive pulleys 5a to d and 4a to d are gradually reduced, the respective conveyor belt pairs (8a: 9a), (8b: 9b), ...
The transport speed of the seedlings has also been reduced for a while, so that the root side of the seedlings is transported faster and the growth point side is transported later, and as the planting mechanism B approaches, the posture of the seedlings approaches the upright state. The driven pulleys 6a to 7d and 7a to 7d which finally form the sending end
The opener is released while standing upright on the bottom surface of the planting groove M dug. The soil ring 22 covers the soil of the root of this seedling immediately, and the compaction wheel 23 presses on it to complete the planting.

In the above embodiment, as a mechanism for reducing the conveying speed of the pair of conveyor belts, the case where the pulleys having different diameters mounted on the single shaft are used is shown.However, the same diameter pulleys are respectively attached to separate drive shafts, A known mechanism, such as rotationally driving each drive shaft via reduction gears having different reduction ratios, can be adopted.

FIG. 3 shows an essential part of another embodiment of the present invention, in which the same members as those in the above embodiment are designated by the same reference numerals.
The difference between this embodiment and the above embodiment is that the seedling is released to the wall surface K side of the planting groove M dug by the grooving device at the seedling delivery end at the lower end of the downward transfer mechanism G. The point is that a pair of deflecting and conveying belts G'for performing the above is attached. The deflecting and conveying belt pair G '
Is provided so that the lower end of the support frame 1 is kept horizontal and is erected on a slightly extended portion toward the wall surface K side, and is integrally formed with pivot shafts 6a and 7a that rotate integrally with the driven pulleys 6a and 7a. Outputs are taken out from the rotating pivot shafts 6A and 7A and driven by an appropriate power transmission means such as a gear train and a winding transmission device.

Since such a deflective conveyance belt G ′ releases seedlings along the wall surface, the seedlings can be prevented from collapsing at the time of release, and it is particularly effective for planting seedlings with low self-sustainability. Of course, also in the above-mentioned embodiment, the shape of the grooving device 21 and the relative position between the outlet of the downward conveying mechanism G and the grooving device 21 are appropriately designed according to the type of seedling, so that the seedling falls. Needless to say, it can be planted.

Effect A conventional transplanter changes the orientation of a seedling into a posture of planting, by placing a leaf tip near the center of rotation of an elastic disc such as a rubber disc and projecting a root from a peripheral edge of the disc. It is sandwiched in a state, rotated by the required angle, and then released to the planting mechanism, so that the length of the seedling is the radius of the disc, such as long onion seedlings other than spring planting. When it became longer, the leaf tips became entangled and it did not work well, so there was a problem that it could not be used as it was. Therefore, unavoidably,
Since the grown seedlings had to be cut in half, it was easy to avoid using transplanters. Furthermore, since the conventional seedling transport mechanism has a structure in which the seedlings are sandwiched between the above-mentioned discs or belt-shaped transport belts, if there is a raised portion such as a branching point of a branch of the seedling, another portion will be present. However, since the clamping force was not applied, there was a drawback that the seedlings could not be planted correctly at the time of planting, because during the transportation, the raised parts pivot about the pivot to disturb the posture. Since the seedling feeding device of the present application sandwiches the seedlings between relatively thin belts, and the sandwiching points extend over a plurality of places, even if the seedlings have the above-mentioned raised portions, the posture of the seedlings may be disturbed during transportation. Absent. In addition, since the seedling planting posture is set to a desired state by changing and setting the conveying speeds of the respective conveyor belt pairs that form the conveyor belt row, it is possible to use the disk mechanism like the disk mechanism. ,
There are no restrictions on the length of seedlings used. In addition, the drive system of the seedling supply device can also be integrated in the upper part of the mounting frame, and there is no need for a drive device or seedling transfer device with different timings such as disk rotation and belt transfer, so the mechanism can be simplified. Have.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a state where one embodiment of the present invention is mounted on a long onion transplanter. FIG. 2 is an explanatory view of the main parts of the transplanter of FIG. 1 as viewed in the traveling direction thereof. FIG. 3 is an explanatory view showing a main part of another embodiment of the present invention.

Claims (3)

[Scope of utility model registration request] 1. A lateral transfer mechanism for laterally transferring seedlings and a delivery end of the lateral transfer device, which intersects in the vicinity of an upper portion,
In a seedling supply device of a transplanter, which comprises a downward conveying mechanism that conveys a seedling to be sent to a lower seedling transplanting mechanism while sandwiching it between opposed conveying belts, the lower conveying mechanism is in a descending state toward the ground. Consists of a conveyor belt row composed of a plurality of pairs of opposing conveyor belts stretched in a straight line in the vertical direction, and conveys the conveying speed of each of the conveyor belt pairs by sandwiching the root side of the seedling. A seedling feeding device for a transplanter, which is set so as to gradually decrease from a pair of belts toward a pair of conveyor belts that sandwich the growth point side. 2. The conveyor belt row is driven by a rotary shaft integrally rotatably provided with a drive pulley whose diameter gradually decreases from the root side conveyor belt drive pulley toward the growth point side conveyor belt drive pulley. 2. The seedling supply device for a transplanter according to claim 1, wherein the conveying speed of each pair of conveyor belts forming the conveyor belt row is configured to gradually decrease. 3. The seedling supply according to claim 1 or 2, wherein a pair of deflection conveyor belts for biasing the seedlings to the wall surface of the planting groove is provided at the seedling delivery end of the downward conveying mechanism. apparatus.