JP2635225B2 - Seedling 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 seedling transplanter for planting seedlings of crops such as rush and rye in a field.

[0002]

2. Description of the Related Art A seedling transplanter for rush, which is an example of a seedling transplanter, has a guide for supporting a lower end of a seedling nest on which rush seedlings are placed and a lower end of the seedling nest like a normal rice transplanter. A traversing mechanism that drives the rail and seedling nest reciprocally traversely along the guide rail, and a planting that removes seedlings from the seedling nest from a seedling outlet that is opened in the guide rail in conjunction with the traversing mechanism, and planting in a field. There has been proposed a mechanism provided with a vertical feed mechanism for feeding the seedlings of the seedling rest to the guide rail side when the hook and the seedling rest reach the stroke end of the lateral feed.

[0003]

In the case of mat-type rice seedlings, the connection between the roots of the seedlings is relatively weak. The roots of the seedlings to be taken out and the roots of the seedlings remaining on the seedling rest are relatively easily separated, and one seedling can be taken out without any particular trouble. On the other hand, the connection between roots of rush seedlings is much stronger than that of rice, so that after the seedlings are grown in a mat shape, one seedling (equivalent to the amount of planted nails taken out at one time)
In some cases, the divided seedlings are re-assembled and placed on a seedling rest.

[0004] However, even if the seedlings are divided into single plants and placed on the seedling rest in the rush, the roots of one plant of seedlings may become entangled while being sent by the vertical feed mechanism. . In such a state, when removing the seedling of one plant while the planting nails pass through the seedling outlet, the roots of the seedlings to be removed and the roots of the seedlings remaining on the seedling rest cannot be sufficiently separated. There is a possibility that the roots of the seedlings remaining on the seedling rest may be dragged out together by the planting nails. SUMMARY OF THE INVENTION It is an object of the present invention to provide a seedling transplanter so that when a planted nail passes through a seedling outlet, one seedling can be taken out without any trouble.

[0005]

A feature of the present invention is that a seedling transplanter is configured as follows. The seedling rest on which the seedlings of the crop are placed, the guide rail supporting the lower end of this seedling rest, and the first seedling near the seedling ejection opening opened in the guide rail, the root of which is located below the seedling ejection outlet. A holding arm that is reciprocally driven over a rush position forcibly moving to a position, and a retreat position away from the seedling, and a position below the seedling take-out port of the root of the seedling that is forcibly moved by the holding arm. And a vertical feed mechanism that feeds the seedlings to the guide rails when the seedlings reach the stroke end of the lateral feed.

[0006]

According to the first aspect of the present invention, for example, as shown in FIG. 1, the holding arm 6 at the retracted position moves leftward in the drawing.
For example, as shown in FIG. 2, first, the holding arm 6 forcibly moves the seedling A in the vicinity of the seedling outlet 12 such that the root portion A1 is located below the seedling outlet 12 (see FIG. 2). Equivalent to the entry position). Thus, the seedling A is separated to some extent from the seedling A near the seedling outlet 12.
Next, as shown in FIG. 3, for example, the planting claw 3a passes through a position below the seedling outlet 12 and the root A1 of the seedling A described above.
(Located below the seedling outlet 12), the held seedlings A are separated from the seedlings remaining in the seedling rest 8, and are planted in the field by the planting claws 3a. In this case, the roots of the seedlings near the seedling outlet were separated to some extent below the seedling outlet from the roots of the seedlings remaining in the seedling cradle by the holding arms, so the planting claws were separated. When the seedlings are sandwiched and planted, the roots of the seedlings are separated without difficulty from the roots of the seedlings remaining on the seedling rest.

[II] According to the feature of the first aspect, the holding arm takes out the seedling from the seedling outlet, and the planting claw does not pass through the seedling outlet and the seedling taken out by the holding arm. (Seedling whose root has been forcibly moved to a position below the seedling outlet)
Are configured to be sandwiched. With this, in the case of planting nails, there is no need to particularly consider what kind of seedling extraction passage should be set for taking out seedlings from the seedling extraction port. What kind of planting trajectory should be set in order to plant the plants should be considered. Therefore, the above-described planting locus can be set appropriately without being restricted by the setting of the above-described locus of passing at the seedling outlet.

[0008]

According to the first aspect of the present invention, the seedlings at the seedling outlet are not taken out at once by using only the planting nails, but the roots of the seedlings near the seedling outlet are held at the seedling rest by the holding arms. By removing the seedlings near the seedling outlet in two stages by the holding arm and the planting claw, the roots of the seedlings to be taken out remain in the seedling pedestal. It was possible to suppress the phenomenon that the seedlings were separated from the roots of the seedlings without any trouble, and the seedlings remaining on the seedling rest were dragged together, thereby preventing poor planting beforehand.

According to the first aspect of the present invention, the trajectory of the sandwiched seedlings in the field is set appropriately without being restricted by the setting of the trajectory of the planting claws at the seedling outlet. It is possible to prevent seedlings from being planted diagonally in the field, or to reduce the soil in the field that is scraped when the planting claws rush into the field to prevent the seedlings from falling after planting. As a result, the planting performance of the seedling transplanter could be improved.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an entire side view of a seedling transplanter for rush, in which a crank arm 2 which is rotationally driven at a rear portion of a planting mission case 1 is provided with a planting claw 3a and a seedling pushing-out portion 3b. An arm 3 is attached, and a holding arm 6 is attached to a pair of front and rear links 4 and 5 provided on an upper part of the planting mission case 1. A seedling rest 8 is provided which is reciprocally slid along a guide rail 7 fixed to the upper surface of the planting mission case 1, and a plurality of sets of seedling outlets 12 are opened in the guide rail 7. As a result, the float 13
Is supported, and a seedling transplanter for rush is constructed.

The seedling stand 8 is, as shown in FIGS.
A large partition plate 10 is provided in a partition portion 9 that separates a portion corresponding to each planting strip, and a belt-type vertical feed mechanism 11 is provided in a portion corresponding to each planting strip.
The seedlings A for rushes are grown in a mat shape, and then the seedlings A are divided into individual strains.
Place between 0.

Next, the holding arm 6 will be described. FIG.
As shown in FIG. 3, a cam plate 18 is fixed to a support shaft 17 of the crank arm 2, and the support shaft 17, the cam plate 18, and the planting arm 3 are driven by power from the planting transmission case 1.
Is rotated in the counterclockwise direction on the paper surface, and the link 4 is driven to swing back and forth by the action of a spring (not shown) that urges the cam plate 18 and the link 4 in the counterclockwise direction on the paper surface in FIG.
A pair of right and left holding claws 6 a is supported at the tip of the holding arm 6 so as to be vertically swingable. A cam mechanism 14 that swings the holding claw 6 a up and down based on the swing of the link 4 is attached to the holding arm 6. It is decorated.

Next, the movement of the planting arm 3 and the holding arm 6 will be described. FIG. 1 shows a state immediately after the planting arm 3 has planted the seedling A in the field G (the holding arm 6 is located at the evacuation position). When the support shaft 17 is driven to rotate counterclockwise from this state, first, the right and left holding claws 6a of the holding arm 6 are moved to the seedlings near the seedling outlet 12 of the guide rail 7 as shown in FIGS. A enters above the root A1 of A. Next, the left and right holding claws 6a of the holding arm 6 are
The seedling A is driven to swing downward by the action of the cam mechanism 14.
Is forcibly pushed down to a position below the seedling outlet 12 (corresponding to the position where the holding arm 6 enters).
Accordingly, the seedling A is separated to some extent from the next seedling A located next to the seedling outlet 12 and the seedling A located above the seedling outlet 12.

A guide 15 having a U-shaped cross section for guiding a seedling A to a field G as shown in FIG.
Is fixed, the seedling A pushed down to a position below the seedling outlet 12 is in the pushed-down position due to friction with the guide 15 and weak connection with the seedling A remaining on the seedling rest 8. Stop.

In the case shown in FIG. 2, the planting nail 3a is
Just before. Next, as shown in FIG. 3, the holding claw 6a of the holding arm 6 moves away from the seedling A to the right side of the paper, and the planting claw 3a passes through a position below the seedling take-out port 12 so that the planting claw 3a The root part A1 of the seedling A that has been pushed down is sandwiched between the seedling pushing part 3b. After that, the planting arm 3 is driven downward, and the above-described depressed seedling A
Are separated from the seedlings A remaining on the seedling rest 8 without any trouble.
Planted in.

After the operation of the holding arm 6 and the planting arm 3 as described above, the seedling rest 8 is fed along the guide rail 7 by a distance corresponding to the lateral width of the seedling outlet 12. 6 and the operation of the planting arm 3 and the lateral feeding of the seedling rest 8 are repeated. When the seedling rest 8 reaches the stroke end of the horizontal feed, the vertical feed mechanism 1 shown in FIG.
By 1, the seedlings A of the seedling placing stand 8 are sent to the guide rail 7 side.

Next, a description will be given of the horizontal feeding structure of the seedling placing stand 8 and the driving structure of the vertical feeding mechanism 11 described above. As shown in FIGS. 1 and 4, one lateral feed shaft 16 is supported in the lateral direction of the planting mission case 1, and the seedling rest 8 is mounted on a support arm 19 fixed to both left and right ends of the lateral feed shaft 16. Is supported. The lateral feed shaft 16 is driven to reciprocate right and left by a feed mechanism (not shown) in the planting transmission case 1 to drive the seedling rest 8 laterally.

A support shaft 21 is rotatably mounted on the support arm 19, and a first arm 22 and a pair of left and right second arms 23 having an L shape in a side view are fixed to the support shaft 21. A link 24 is provided between the first arm 22 and an arm 11 b of a one-way clutch (not shown) provided inside the drive roller 11 a of the vertical feed mechanism 11. With the above structure, when the seedling rest 8 reaches the stroke end of the lateral feed, the crank arm 25 of the planting transmission case 1 rotates while rotating in the counterclockwise direction in FIG.
The arm 23 is pushed upward in the drawing. Thereby, the drive roller 11a rotates by the set angle, and the seedling A is sent to the guide rail 7 side.

As shown in FIG. 4 and FIG.
A portion of the support shaft 21 extending laterally from the support 9 is supported by a pipe member 26 fixed to the support arm 19 so as not to bend. A support plate 27 for suppressing the slack near the middle of the vertical feed mechanism 11 is fixed to the seedling rest 8.
A stay 28 is erected and connected to the pipe member 26.

[Alternative Embodiment] In the above embodiment, the seedling rest 8 is driven to reciprocate laterally to the left and right.
Rows of seedlings A are placed from the upper side of the seedling stand 8 to the lower seedling outlet 12.
To the side, the holding arm 6 and the planting arm 3 may be configured to be sequentially fed with each operation.

[0021] In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[Brief description of the drawings]

[Fig. 1] Side view of whole seedling transplanter for rush

FIG. 2 is a side view showing a state in which the holding arm has entered the seedling from the state shown in FIG. 1 and the seedling at the seedling outlet has been pushed down to a position below a guide rail.

FIG. 3 is a side view showing a state in which a holding arm is retracted from the state shown in FIG. 2 and a pushed down seedling is held by a planting claw;

FIG. 4 is a plan view showing a horizontal feeding structure of a seedling placing table and a driving structure of a vertical feeding mechanism of a seedling;

[Explanation of symbols]

 3a Planting Claw 6 Holding Arm 7 Guide Rail 8 Seedling Stand 11 Vertical Feeding Mechanism 12 Seedling Outlet A Seedling A1 Root of Seedling G Field

Claims (1)

(57) [Claims] 1. A seedling stand (8) on which a seedling (A) of a crop is placed, a guide rail (7) supporting a lower end of the seedling stand (8), and an opening in the guide rail (7). The seedling outlet (1
2) The first seedling (A) in the vicinity extends over a rush position where the root (A1) is forcibly moved so that its root (A1) is located below the seedling outlet (12) , and a retracted position away from the seedling (A).
An arm (6) holding reciprocatingly driven Te, roots of seedling holding arm (6) is forcibly moved (A) to (A1), a position below the said seedling outlet (12)
With a planting claw (3)
a) and a vertical feed mechanism (11) for feeding the seedling (A) of the seedling rest (8) to the guide rail (7) side when the seedling rest (8) reaches the stroke end of the lateral feed. Seedling transplanter.