JP3309511B2 - 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 an improvement of a planting portion of a seedling transplanter.

[0002]

2. Description of the Related Art Conventionally, as a planting section of a seedling transplanter, a seedling is extruded from a pot of a seedling box at a seedling pushing position in a seedling box transporting path while the seedling box is transported along the seedling box transporting path. The seedling transfer holder of the seedling transfer device receives the seedlings at the seedling receiving position and transfers the seedlings to the seedling transfer position, where the seedling removing device drops the seedlings held by the seedling transfer holder onto the seedling transfer belt, and the seedlings are removed. Is transported to a planting position by a seedling transport belt.

[0003]

In the conventional planting section, the seedlings held by the seedling transfer holder are extracted by the seedling extracting arm of the seedling removing device, and after the extraction is completed, the seedling hitting arm is activated. Then, the seedlings are beaten down onto the seedling transport belt by the seedling strike arm. Therefore, conventionally, there has been a problem that the seedlings are not reliably hit by the seedling hitting arm, and the seedlings are quickly knocked down so that high-speed planting cannot be performed.

[0004] Therefore, an object of the present invention is to make sure that the seedlings are beaten by the seedling tapping arm, and to quickly knock down the seedlings to achieve high-speed planting.

[0005]

In order to achieve the above object, the present invention is configured as follows. That is, the present invention provides a seedling transfer holder of a seedling delivery device that pushes seedlings from a pot of a seedling box at a seedling pushing position in a seedling box transfer path while transferring the seedling boxes along the seedling box transfer path. Receives at the seedling receiving position and transports it to the seedling delivery position, at which position the seedling removal device drops the seedlings held by the seedling transport holder onto the seedling transport belt, and transports the seedlings to the planting position by the seedling transport belt. In the seedling transplanting machine having a planting section, the seedling removing device includes a fixed seedling extracting arm for extracting seedlings from the seedling transfer holder at the seedling transfer position, and placing the extracted seedlings on a seedling transport belt located below the seedling transferring belt. And a seedling supply arm that supplies the seedling supply arm to the seedling removal arm, and a seedling supply arm driving mechanism that drives the seedling supply arm during a seedling removal period by the seedling removal arm.

[0006]

According to the present invention, as shown in FIG. 4, when the seedling transfer holder 25 receives the seedling at the seedling receiving position (E), it starts transferring the seedling to the seedling transfer positions (F) to (G). When the seedling transfer holder 25 reaches the seedling transfer start position (F), the operation of extracting the seedlings held by the seedling transfer holder 24 by the fixed seedling extracting arm 40 starts. The process is continued until the holder 25 almost reaches the seedling delivery end position (G).

On the other hand, during the period of extracting the seedlings, the seedling supply arm 41 starts operating downward. Therefore, the seedlings held by the seedling transfer holder 25 are supplied to the lower seedling transfer belt by the seedling supply arm 41 immediately after being pulled out by the seedling removal arm 40.

[0008]

Next, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, a riding type fertilizer rice transplanter which is a kind of a seedling transplanter will be described as an example.

In this embodiment, as shown in FIG. 1, a six-row planting section 2 and a fertilizer 3
, And configured as a riding fertilizer rice transplanter as a whole. The planting section 2 is attached to a parallel link device 4 provided at a rear portion of the machine 1 so as to be able to move up and down with respect to the machine 1. The parallel link device 4 is configured to move up and down by a hydraulic cylinder 5.

The planting section 2 is a system in which seedlings are loaded together with a seedling box. As shown in FIG. 2, three planting units 6 are arranged at predetermined intervals. Each planting unit 6 includes left and right seedling planting devices 9, 9 for planting seedlings in a frame constituted by a transmission case of a transmission device 7, and the seedling planting device 9.
And a device for supplying seedlings for supplying seedlings one by one to the seedling picking position.

Each device for supplying seedlings is, as shown in FIG.
Seedling box transport path 10 having a U-shaped side view, and its seedling box transport path 10
, A seedling pushing device 12 for pushing seedlings out of a seedling box at a seedling pushing position on a seedling box transport path 10, and a seedling for transferring the seedlings pushed out by the seedling pushing device 12 to a seedling transport belt 13. Delivery device 14, seedling removal device 1 for dropping seedlings of seedling delivery device 14 onto conveyor belt 13
5. The seedling transfer belts 13 for transporting the seedlings received from the seedling transfer device 14 to the seedling collecting position of the seedling planting device 9.

The transmission 7 has gears, cams, shafts, bearings and the like arranged at predetermined positions in a transmission case, and receives power from an input shaft by using a seedling box feed drive shaft 7A, a seedling pushing drive shaft 7B, and a seedling delivery shaft. It is configured to be taken out from the drive shaft 7C and the cam shaft 7D.

The seedling box feeder 11 reciprocates the feed claw 11A by the power of the seedling box feed drive shaft 7A of the transmission 7,
The feeding claw 11A is inserted into the claw hole of the seedling box 8 to intermittently feed the seedling box 8 by one pot. The seedling box 8 has a plurality of pots arranged side by side. Seedling pushing device 1
Numeral 2 drives the slide mechanism 12A by the power of the seedling pushing drive shaft 7B of the transmission 7, and thereby the seedling pushing pin 1
2B is reciprocated so that the seedlings are pushed out of the pot.

The seedling transfer device 14 is configured such that the seedling transfer holder 25 transfers the seedlings onto the seedling transfer belts 13, 13 by the power of the seedling transfer drive shaft 7 C of the transmission 7.
The seedling removing device 15 removes the seedling in which the seedling removing arm 40 whose position is fixed is held by the seedling transfer holder 25, and the removed seedling is supplied to the seedling supply arm 41 driven by the power of the cam shaft 7 </ b> D of the transmission 7. The conveyor belts 13 are configured to be knocked down. At each end of the conveyor belts 13, a pair of left and right planting devices 9, 9 for planting the seedlings at the seedling collecting position by the planting rod 9A are arranged. Note that 1 in FIG.
7 is a float.

Next, specific examples of the seedling delivery device 14 and the seedling removing device 15 will be described with reference to FIGS.

The seedling delivery device 14 includes a gear case 20,
Support shafts 21A, 22 provided before and after the gear case 20
A pair of right and left links 21, 21 each having a base supported by A,
22, 22 and the connecting shaft 21 at the tip of the pair of links.
B, 21B, 22B, and 22B, the connecting members 23, 23 connected to each other constitute a parallel link device, and the seedlings are interlocked with the left and right connecting members 23, 23 in the shape of a rear view arched bracket 24, 24. The transport holder 25 is suspended. As shown in FIG. 5A, the seedling transfer holder 25 has a concave portion 25 having a circular bottom so that the floor soil portion of the seedling can be fitted.
A,... Are formed. The seedling transfer holder 25 has mounting members 25B, 25B projecting rearward from both left and right ends thereof.
To the brackets 24, 24.

The gear case 20 contains a large-diameter drive gear 27 fitted to the input shaft 26 and small-diameter driven gears 28, 29 fitted to the support shafts 21A, 22A. The number of teeth of both driven gears 28 and 29 is the same. A driven arm 31 is attached to a portion of the input shaft 26 protruding outside the case, and the drive arm 32 attached to the seedling transfer drive shaft 7C of the transmission 7 is connected to the driven arm 31 by a connecting rod 33. In FIG. 4, reference numerals 35 and 36 denote stoppers for regulating the vertical rotation range of the link 21, and reference numeral 37 denotes a buffer spring interposed on the connecting rod 33.

The seedling removing device 15 includes a fixed seedling removing arm 40, an operating arm 44 and a seedling hitting cam 4 as described later.
And a seedling supply arm 41 that is operated by a seedling supply arm drive mechanism composed of five or the like.

The seedling removing arm 40 is fixedly provided on the support shaft 42, and has a rear end branched into a predetermined number of seedling removing portions 40A,. Each seedling extraction section 40A,
.. Have a circular shape in rear view corresponding to the concave portions 25A of the seedling transfer holder 25 (see FIG. 5B).

The rear part of the seedling supply arm 41 also branches into a predetermined number, and the rear end part thereof is a horizontally bent seedling hitting part 41A,.
・The seedling supply arm 41 is rotatably attached to a support shaft 42, and the operation arm 44 fixed to the seedling supply arm 41 is swung by a seedling hitting cam 45 and a return spring 46, so that the seedling supply arm 41 is moved up and down. It is configured to rotate. That is, the seedling supply arm 41 is always in the raised position, and the roller 47 of the operation arm 44 is
45A of seedling hitting cam 45 attached to camshaft 7D
When it is fitted in the operating arm 4 by the action of the spring 46.
4 is raised, and the seedling supply arm 41 momentarily moves downward. Even when the seedling supply arm 41 is moved down, the seedling supply arm 41 is set so as not to enter the path of the seedling transfer holder 25.

Next, an example of the operation of the embodiment having the above configuration will be described with reference to the phase diagram of FIG.

First, the operation of the feeding claw 11A of the seedling box feeding device 11 for feeding the seedling box 8 is shown in "seeding of seedling" in FIG. That is, the feed claw 11A starts moving upward at an angle (phase) c1, then begins to disengage from the claw hole of the seedling box 8 at an angle c2, and stops moving upward at an angle c3. Next, the angle c
When it reaches 4, the feed claw 11A starts moving downward and stops moving at an angle c5. And this feed claw 11
When A moves downward, it engages with the claw hole of the seedling box 8 and the seedling box 8
Is moved downward by one pitch, that is, by one pot.

The operation of the seedling pushing pins 12B of the seedling pushing device 12 for pushing seedlings from the pot of the seedling box 8 is shown in "seeding pushing" of FIG. That is, the seedling push-out pin 12B has the angle d
From the angle d2 to the angle d3.
Retreat during the period. Therefore, each seedling pushed out of the row of pots of the seedling box 8 at once by the projection of the seedling pushing pin 12B is transferred to the seedling transfer holder 25 of the seedling delivery device 14 which is in standby at the seedling receiving position (E) in FIG. Each recess 25A
Next, the operation of the seedling transfer holder 25 of the seedling transfer device 14 is shown in "seeding transfer" of FIG. That is,
After the seedlings are supplied to the seedling transfer holder 25, when the angle reaches e1, the input shaft 26 starts rotating counterclockwise, so that the seedling transfer holder 25 holds the seedlings and the seedling transfer position (F).
To rotate toward (G). Then, when the seedling transfer holder 25 reaches the delivery / delivery start position (F) at an angle e3, the seedling removing portion 40A of the seedling removing arm 40 starts inserting the holder 25 into the recess 25. Thereby, the recess 25A
The operation of extracting the seedlings held in the rear is started,
This seedling extracting operation continues up to an angle e4 almost reaching the delivery / delivery end position (G).

On the other hand, when the roller 47 of the operating arm 44 enters the concave portion 45A of the seedling hitting cam 45 at the angle f1 immediately after the start of the above-described seedling extracting operation (see "seeding of seedling" in FIG. 6), the spring The operation arm 44 is pulled up by 46, and the seedling supply arm 41 starts moving downward.
Therefore, the seedlings held in the concave portions 25A of the seedling transfer holder 25 are pulled out in the seedling transfer direction by the seedling removing portion 40A of the seedling removing arm 40 as described above, and at the same time, the seedling supply arm 4 is moved.
Since the seedling hitting part 41A of 1 is hit downward,
The seedling hitting portion 41A can reliably hit the seedling without damaging the seedling.

Thereafter, the seedling transfer holder 25 is stopped at the seedling delivery end position (G) between the angle e4 and the angle e5. Then, from the angle e5 to the angle e6, when the seedling transport holder 25 moves upward and reaches the seedling receiving position (E) with the clockwise rotation of the input shaft 26, it stops to receive the next seedling there. And wait. On the other hand, the seedling supply arm 41 stops between the angle f2 and the angle f3,
After the upward movement at the angle f3 is started, the movement is stopped at the angle f4.

As described above, the seedlings that have been pulled out by the seedling removing arm 40 and hit by the seedling supply arm 41 simultaneously fall onto the transport belts 13. And seedling transport belt 1
The seedlings are conveyed toward the seedling collecting position of the seedling planting device 9 by 3, 13 and supplied to the seedling collecting positions at the respective timings a1 to a7 shown in the "seedling collecting position" in FIG. B1 to b of the "planted rod stop position" shown in FIG.
7 is a seedling planting device 12 when the planting clutch is released.
Is stopped, and the planting rod 9A stops at a position slightly past the seedling picking position regardless of when the clutch is disengaged.

As described above, in the embodiment, the seedling supply arm 41 starts operating during the period of extracting the seedlings by the seedling supply arm 40. Therefore, since the seedlings held by the seedling transfer holder 25 are hit downward by the seedling supply arm 41 immediately after being pulled out by the seedling extraction arm 40, the seedling supply arm 41 is surely downward without damaging the seedlings. It can be beaten, and the seedlings can be beaten quickly for high-speed planting.

In the above-described seedling transfer device 14, since the speed is transmitted from the input shaft 26 to the two support shafts 21A and 22A at an increased speed, the two links 2 are moved in comparison with the operating angle of the driven arm 31.
The operating angles of 1, 22 increase. Further, when the seedling transfer holder 25 is located at an intermediate point between the seedling transfer positions (F to G), the support shafts 21A and 22A, which are the pivots of the links 21 and 22, are provided.
Is arranged so that the connecting shafts 21B and 22B are located immediately below the center, the seedling transport holder 25 moves substantially horizontally forward between F and G. Therefore, the seedlings held by the seedling transfer holder 25 are smoothly removed by the seedling removing arm 40.

Next, another configuration example of the seedling removing device will be described.
This will be described with reference to FIG.

The seedling removing device 71 is different from the seedling removing device 15 shown in FIG. 4 in that the support shaft 42, which is the rotation fulcrum of the seedling supply arm 41, is disposed below the transport surface 13A of the seedling transport belt 13. Things. With this configuration,
The locus of the seedling tapping portion 41A in the seedling supply arm 41 when the seedling hits the seedling is directed outward as shown in FIG. 7, so that the beaten seedling falls on the seedling transport belt 13 in a state where the root side is low and inclined. Become. Therefore, the seedling hitting portion 41 </ b> A can stably hit the seedlings onto the seedling transport belt 13.

Next, another example of the structure of the seedling transfer holder will be described with reference to FIG.

The seedling transfer holder 81 is provided with a pair of small projections 82 on the entrance side of the concave portion 81A and a pair of small projections 83 on the exit side thereof. The seedling is held in the recess 81A. The protrusions 82 on the inlet side and the protrusions 83 83 on the outlet side are arranged so as to have different phases as shown in FIG.

In the seedling transfer holder 81 having such a configuration,
When the seedling pushed out of the seedling box by the protrusion of the seedling pushing pin 12B of the seedling pushing device 12 is accommodated in the recess 81A, the roots are securely held in the recess 81A by the projections 82 and 83, and the seedling transfer position in that state. Transported to Therefore,
At the time of removing seedlings by the seedling removing portion 40A of the seedling removing arm 40, the seedling removing portion 40A is securely brought into contact with the bottom of the root, and the seedlings are removed, so that the soil collapse of the root at the time of removing the seedlings can be prevented.

Next, another example of the structure of the seedling transfer holder will be described with reference to FIG. This seedling transfer holder 91
The projection 9 is opposed to the left and right inside the concave portion 91A for holding the seedling.
2, 92 are provided, and a pair of left and right guide plates 93, 93 are arranged to face each other on the outlet side of the concave portion 91A to form a seedling guide 94. When the seedling guide 94 is formed on the outlet side of the concave portion 91A in this manner, the seedling is guided by the seedling guide 94 in the direction of removing the seedling when the seedling removal arm 40 of the seedling removing device 15 pulls out the seedling. The belt 13 reliably falls between the positioning projections formed on the surface of the belt 13.

In the above embodiment, the seedling supply arm is used to knock the seedlings down onto the seedling transport belt. However, the present invention is not limited to this, and it is sufficient if the seedlings are supplied onto the seedling transport belt. .

[0036]

As described above, according to the present invention, when the seedling transfer holder reaches the seedling transfer position, the operation of extracting the seedlings from the seedling transfer holder is started by the seedling extracting arm. The supply arm was started to operate downward by the seedling supply mechanism. Therefore, in the present invention, the seedlings held by the seedling transfer holder are moved downward by the seedling supply arm immediately after being pulled out by the seedling removal arm, so that the seedling supply arm reliably moves the seedling without being damaged. It can be supplied on a seedling transport belt.

[Brief description of the drawings]

FIG. 1 is a side view showing an overall configuration of an embodiment of the present invention.

FIG. 2 is a plan view of the planting portion.

FIG. 3 is a side view of the planting portion.

FIG. 4 is a side view showing an example of a seedling transfer device and a seedling removing device.

FIG. 5A is a rear view of a seedling transfer holder, and FIG. 5B is a rear view of a seedling removing arm.

FIG. 6 is a phase diagram showing the operation of each operating section of the planting section.

FIG. 7 is a side view showing another example of the seedling removing device.

FIG. 8A is a front view showing another example of the seedling transfer holder, and FIG. 8B is a plan view thereof.

9A is a bottom view showing another example of the seedling transport holder, FIG. 9B is a cross-sectional view taken along line AA, and FIG. 9C is a rear view thereof.

[Explanation of symbols]

 2 Planting part 8 Seedling box 9 Seedling planting device 10 Seedling box transfer path 13 Seedling transfer belt 14 Seedling transfer device 25 Seedling transfer holder 15 Seedling removal device 40 Seedling removal arm 41 Seedling hitting arm

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Satoshi Kato 1st Hachikura, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd. In-house Engineering Department (72) Inventor Hideo Iseki 1-Yachikura, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd. In-Technology Department .Cl. ⁷ , DB name) A01C 11/00-11/02

Claims (1)

(57) [Claims] A seedling box is extruded from a pot of a seedling box at a seedling pushing position of the seedling box conveying path while the seedling box is conveyed along the seedling box conveying path, and the pushed seedling is transferred to a seedling transfer holder of a seedling transfer device. At the seedling receiving position, the seedlings are transferred to the seedling transfer position, at which position the seedling removal device drops the seedlings held by the seedling transfer holder onto the seedling transfer belt, and the seedlings are transferred to the planting position by the seedling transfer belt. In the seedling transplanter having a portion, the seedling removal device, a fixed seedling extraction arm to extract seedlings from the seedling transfer holder at the seedling delivery position, the extracted seedlings, on the seedling transfer belt located below the A seedling supply arm for supplying the seedling supply arm, and a seedling supply arm drive mechanism for driving the seedling supply arm during a seedling removal period by the seedling removal arm.