JP3341375B2 - 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 part of a seedling transplanter, a seedling is taken out from a pot of a seedling box at a position where the seedling box is taken out of the seedling box carrying path while the seedling box is carried along a seedling box carrying 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.At that position, the seedling removing device drops the seedlings held by the seedling transfer holder onto the seedling transfer belt, and Is transported to a planting position by a seedling transport belt.

[0003]

However, in the above-described conventional planting section, when the removal of the seedling from the pot of the seedling box at the seedling removal position fails, the next feeding operation of the seedling box is performed. Sometimes seedlings are sent down in pots.
Then, at the time of taking out the next seedling, the previous poorly taken seedling is hindered, which also causes the failure of taking out the seedling from the pot of the seedling box.

[0004] Therefore, an object of the present invention is to prevent the removal of the next seedling even if the removal of the seedling from the pot of the seedling box fails at the seedling removal position.

[0005]

In order to achieve the above object, the present invention is configured as follows. That is, the present invention relates to a seedling transplanter for transferring a seedling box along a seedling box transfer path, removing a seedling from a seedling box pot at a seedling removal position in the seedling box transfer path, and planting the seedling. seedlings was taken out from the pot by the take-out position is the following when taking out the next seedling
A seedling transplanter characterized by providing a regulating means for regulating so as not to interfere with the removal of seedlings.

[0006]

According to the present invention, when the seedlings taken out seedlings from the pot at a position not taken out, seedlings could not get this preparative is, the restriction means so as not to interfere with the extraction of the next seedling to regulate when taking out the next seedling .

[0007]

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 the rear of the machine 1 and is configured 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.

As shown in FIG. 3, the seedling supply devices include a seedling box transport path 10 having a U-shaped side view, a seedling box feeding device 11 provided in the seedling box transporting path 10, and a seedling box transporting apparatus. Seedling removal device 12 for removing seedlings from a seedling box at a seedling removal position on road 10, seedling delivery device 14 for delivering seedlings taken out by seedling removal device 12 to seedling transfer belt 13, and transporting seedlings of seedling delivery device 14 Seedling dropping device 1 that falls on 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 is configured such that gears, cams, shafts, bearings and the like are arranged at predetermined positions in a transmission case, and power from an input shaft is taken out from output shafts 7A, 7B, 7C, 7D.

The seedling box feeder 11 reciprocates the feed claw 11A by the power of the output shaft 7A of the transmission 7 and inserts it into the claw hole of the seedling box 8 so that the seedling box 8 is intermittently arranged for one row of pots. Configure to send. The seedling box 8 has a plurality of pots arranged side by side. The seedling removal device 12 is configured to drive the slide mechanism 12A by the power of the output shaft 7B of the transmission 7, thereby reciprocating the seedling removal pin 12B and removing the seedling from the pot.

The seedling transfer device 14 is configured such that the seedling transfer holder 14A transfers the seedlings onto the seedling transfer belts 13, 13 by the power of the output shaft 7C of the transmission device 7. The seedling removing device 15 removes a seedling whose fixed position is a seedling removing arm (not shown) held by the seedling transfer holder 14A, and the removed seedling is driven by the power of the output shaft 7D of the transmission 7. The striking arm 15A is configured to strike down on the conveyor belts 13,13. At each end of the conveyor belts 13, a pair of left and right planting devices 9, 9 are arranged. In addition, 17 in FIG. 2 is a float.

Next, a specific example of the seedling delivery device 14 will be described with reference to FIGS.

The seedling transfer device 14 attaches the seedling transfer holder 14A to the link of the pair of left and right link mechanisms 21, 21. Then, the link mechanism 21 is configured so that the seedling transfer holder 14A reciprocates between the seedling receiving position indicated by the solid line in FIGS. 4 and 5 and the seedling transfer position indicated by the two-dot chain line in FIG. I do. Further, the seedling transfer holder 14A
5 is horizontal when in the seedling receiving position shown by the solid line in FIG. 5, and when in the seedling receiving position shown by the two-dot chain line in FIG. Inclined low with respect to the horizontal transport surface of the
Is set to a predetermined value.

The link mechanism 21 is composed of a fixed link formed by engaging the driven gears 23 and 24 around the drive gear 22 and three movable links 25, 26 and 27, and supports these links. Shafts 28, 29, 30, 31
To form a trapezoidal shape as shown in FIG.

The shaft 32 of the drive gear 22 is connected to the output shaft 7C of the transmission 7 via an arm 33, a rod 34, and the like, so that the drive gear 22 rotates forward and backward by reciprocating the rod 34. The gear ratio of both driven gears 23 and 24 is the same. Reference numerals 35 and 36 in FIG.
1 is a stopper for restricting the movement range.

In the seedling delivery device 14 having such a configuration,
The seedling transfer holder 14A receives the seedling at the seedling receiving position indicated by the solid line in FIG. Next, when the rod 34 moves forward, the drive gear 22 rotates counterclockwise. Accordingly, both the left and right driven gears 23 and 24 rotate clockwise. It is transported to the seedling delivery position indicated by the chain line.

At the seedling transfer position, the seedling transfer holder 14A
Is in a state where its base end side is inclined low with respect to the horizontal transport surface of the transport belt 13. Therefore, the seedling transfer holder 1
The seedling held by 4A is in a state where the root side is low and the side of the leaf is inclined high. In this state, the seedling removing device 15 drops the seedling on the transport belt 13. Therefore, when falling
Since the root portion and the leaf portion of the seedling are in contact with the seedling transport belt 13 at the same time, the seedlings are orthogonal to the transport direction on the seedling transport belt 13, and in that state, the seedlings are placed at the seedling placement position of the seedling planting device 9. Supplied. Therefore, the planting rod 9A can plant only seedlings that should be planted, and does not drag in the next seedlings, so that normal planting can be planted.

Next, another specific example of the seedling delivery device 14 will be described with reference to FIG.

The seedling delivery device 14 includes a fixed link 42
And three movable links 43, 44, 45, and these links are supported by support shafts 46, 47, 48, 49,
The parallel link mechanism 41 is configured. The parallel link mechanism 41 causes the seedling transfer holder 14A to reciprocate between a seedling receiving position indicated by a solid line in FIG. 6 and a seedling receiving position indicated by a two-dot chain line in FIG. Further, the seedling holding surface of the seedling transfer holder 14A is orthogonal to the seedling transfer direction of the seedling box transfer path 10 at the seedling receiving position, and the base end side of the seedling transfer belt 13 is at the seedling transfer position at the seedling transfer position. It is configured to incline at a low angle with respect to the horizontal transport surface, and to set the inclination angle θ to a predetermined value.

Next, a specific example of the seedling removal device 12 will be described with reference to FIGS.

The seedling pick-up device 12 has a predetermined number (for example, 14) of seedling picking pins 1 for picking up seedlings one row at a time from the pot of the seedling box 8 located at the picking position of the seedling box transport path 10.
2B, which are integrally attached to the attachment member 51 at predetermined intervals. On the left and right sides of the mounting member 51, projecting portions 52, 52 are provided integrally downward. Through holes 53, 53 are formed in the projecting portions 52, 52, respectively.
The rear part of the sensor pin 54 is inserted into the through holes 53. Further, each sensor pin 54 is configured to be constantly biased from the projecting portion 52 toward the seedling box transport path 10 by a spring 55 (see FIG. 8). The position of the sensor pin 54 is set to a position separated from the mounting position of the seedling extraction pin 12B by the feed pitch of the seedling box 8 directly below. The rear ends of the sensor pins 54 are connected to each other by a connecting member 56, and the sensor 57 is operated by the connecting member 56.

On the left and right of the mounting member 51, connecting pins 61 are provided.
The left and right drive rods 59, 59 are connected to each other via the, and the connection between these two can be released by the left and right sensor pins 54, 54 as described later.

That is, through holes 68, 68 are formed on the left and right sides of the mounting member 51, and a pin hole 58 that connects the through hole 68 and the through hole 53 is formed. Each pin hole 58
, A connecting pin 61 is inserted, and a drive rod 59 is inserted into each through hole 68. When one end of the connection pin 61 comes into contact with the peripheral surface of the sensor pin 54 and the other end is fitted into a concave portion 60 formed in the circumferential direction of the drive rod 59, the left and right drive rods 59 are connected via the connection pin 61. To the mounting member 51. The rear end of the drive rod 59 is a slide mechanism 1 composed of a rack, a pinion, or the like.
2A, so that the drive rod 59 moves forward and backward.

As shown in FIG. 8, the seedling removal device 12 having such a configuration arranges the seedling removal pins 12B at the seedling removal position of the seedling box transport path 10, and moves the sensor pin 54 to the seedling box position relative to the seedling removal position. Is arranged downward by the feed pitch of.
Then, the seedling box 8 is moved backward when the seedling removal pin 12B is retracted and pulled out from the pot of the seedling box 8 between the seedling extracting device 12 and the seedling box 8 conveyed in the seedling box conveying path 10. Is provided.

The base plate 62 has a through hole 63 through which the seedling removal pin 12B passes, and a through hole 64 through which the sensor pin 54 passes.
In addition, a confirmation hole 65 for confirming the presence of the seedling box 8 by the operator of the rice transplanter sitting in the driver's seat and looking at the back is drilled directly above the position of the through hole 63 by the feed pitch of the seedling box. (Fig. 9
reference). The confirmation hole 65 formed in the base plate 62 may be an elongated hole 66 as shown in FIG. When the confirmation hole 65 and the oblong hole 66 are formed in the base plate 62 in this manner, the operator of the rice transplanter does not need to turn back one by one to the seedling box transport path 10.
It is possible to easily confirm whether or not there is a seedling box 8, and it is also possible to easily confirm the presence or absence of a seedling in a pot, thereby improving workability.

In the seedling removal device 12 as described above, the left and right drive rods 59,
59 moves forward, but when the pot of the seedling box 8 is at the correct seedling take-out position, the tips of the left and right sensor pins 54 can pass through the seedling take-out hole at the bottom of the pot. for that reason,
With the advancement of the drive rods 59, 59,
B moves forward and removes the seedlings in the pot all at once.

On the other hand, when the pot of the seedling box 8 is out of the correct seedling removal position, the left and right sensor pins 54, 5
The tip of No. 4 cannot advance through the seedling removal hole at the bottom of the pot. Therefore, as the drive rods 59, 59 advance, the sensor pin 54 retreats against the bias of the spring 55, and the sensor pin 54 side of the connecting pin 61 engages with the tapered portion of the sensor pin 54. The drive rod 59 side of the connecting pin 61 comes off the concave portion 60. as a result,
The connection between the left and right drive rods 59, 59 and the attachment member 51 by the connection pin 61 is released, and only the left and right drive rods 59 advance, so that the seedling extraction pin 12B integral with the attachment member 51 cannot advance. Therefore, when the pot of the seedling box 8 is out of the seedling removal position, the seedling is not forcibly removed from the pot.

Next, the seedling box conveying path 10 and the seedling box conveying path 1
1 and FIG.
This will be described with reference to FIG.

The seedling box transport path 10 is configured so that the left and right edges of the seedling box 8 are sandwiched between the left and right edges of the bottom plate 71 and the corresponding holding members 72, and the seedling box 8 is guided in the sandwiched state. At the seedling removal position of the seedling box transport path 10, a base plate 73 having a through hole 63 through which the seedling removal pin 12B penetrates is provided, and a seedling box 8 is provided at the left, right, and center from the removal position. Three rails 74 to guide,
75 and 76 are arranged. And these rails 74, 7
A cover 78 that can be opened and closed around a bar-shaped horizontal frame 77 is provided above the upper and lower parts 5 and 76. The cover 78 has a reinforcing member 79 at the center and the entirety of the rails 74 and 7.
5 and 76, and a pair of hooks 80 and 80 are provided on the left and right sides thereof. The cover 78 also functions as an upper rail with respect to the three lower rails 74, 75, and 76.

When the cover 78 is opened and closed as described above, maintenance becomes extremely easy. Also, since the cover 78 also functions as the upper rail, removing the cover 78 will cause the upper rail to come off, so that when the transport of the seedling box 8 is abnormal, the seedling box 8 can be easily removed. It is convenient to take it out.

Next, another example of the cover provided on the seedling box transport path 10 will be described with reference to FIGS.

The cover 81 is a restricting means for restricting the seedlings that could not be taken out of the pot at the position where the seedlings were taken out so as not to interfere with taking out the next seedlings.
In addition to being openable and closable about the center 7, the upper end is formed in a saw-tooth shape. The other configuration is the same as that of the cover 78 shown in FIG. 11, so the same reference numerals are given and the description thereof will be omitted.

The operation of the cover 81 having such a configuration will be described. If the removal of the seedlings from the pot of the seedling box at the position where the seedlings are removed fails, the seedlings are not moved during the next feeding operation of the seedling box. It is sent down in the pot. And at the time of taking out the next seedling,
Because of the saw-toothed portion at the upper end of the cover 81, the seedlings taken out this time are bent laterally as shown in FIG. 14, so that the seedlings taken out this time can be taken out smoothly without being hindered by taking out the seedlings that are not taken out well. You.

Next, another example of the cover provided on the seedling box transport path 10 will be described with reference to FIG.

The cover 91 is provided with a rod-shaped horizontal frame 7.
A cover 92 that can be opened and closed around the center 7 and the cover 9
A pair of left and right seedling bending members 93, 93 for bending the seedlings, which have failed to be taken out of the seedling box from the pot, laterally are provided at the upper part of 2. Each of the seedling bending members 93, 93 has an uneven portion and has a pair of left and right long holes 94, 94, and the pins 95, 95 attached to the cover portion 92 are inserted through the long holes 94, 94. 93 is stopped on the upper part of the cover part 92.

The two seedling bending members 93 are connected to each other by springs 95A at their inner portions, so that they are always brought to the center. A pin 96 is attached to a portion near the outside of the seedling bending member 93, and the pin 96 is inserted into a long hole 98 formed in one end of the arm 97. The arm 97 is configured to be rotatable about a shaft 99 attached to the cover portion 92, and a pin 100 is attached to the other end. The pin 10
0 engages with a pin (not shown) provided on the feed claw when the feed by the feed claw (not shown) of the seedling box feeder ends, and the arms 97 and 97 rotate. The seedling bending members 93 are configured to move outward from each other. The cover 92 may not be configured to be openable and closable, but may be integrally attached to the horizontal frame 77 or the like.

The operation of the cover 91 having such a configuration will be described. If the removal of the seedlings from the pot of the seedling box at the position where the seedlings are removed fails, the seedlings are not moved during the next feeding operation of the seedling box. It is sent down in the pot. However, near the end of the feeding operation, the left and right arms 97, 97 rotate respectively, and the seedling bending members 93, 9
3 move outward, so that the seedling bending member 9
The seedling that has entered the concave portion of No. 3 is bent laterally. Therefore, when the seedlings are next taken out, the seedlings that have failed to be taken out can be smoothly moved without being hindered.

[0040]

As described above, according to the present invention, since the seedlings that could not be taken out of the pot at the position where the seedlings were taken out are provided with regulating means for regulating the taking out of the next seedling when taking out the next seedling , Even if the removal of the seedling from the pot of the seedling box fails at the seedling removal position, the removal of the next seedling can be performed smoothly.

[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 plan view showing an example of a seedling delivery device.

FIG. 5 is a side view thereof.

FIG. 6 is a side view showing another example of the seedling delivery device.

FIG. 7A is a plan view illustrating an example of a seedling removal device,
(B) is a front view thereof.

FIG. 8 is a side view of the device.

FIG. 9 is a front view of the base plate.

FIG. 10 is a front view showing another example of the base plate.

FIG. 11 is a front view showing a seedling box transport path and a cover thereof.

FIG. 12 is a longitudinal sectional view thereof.

FIG. 13 is a front view showing another example of the seedling box transport path and its cover.

FIG. 14 is a diagram illustrating the operation of the saw-toothed portion of the cover.

FIG. 15 is a front view showing still another example of the seedling box transport path and its cover.

[Explanation of symbols]

 2 Planting part 8 Seedling box 10 Seedling box transfer path 13 Seedling transfer belt 14 Seedling transfer device 14A Seedling transfer holder 15 Seedling removing device 21, 41 Link mechanism

Claims (1)

(57) [Claims] 1. While transporting a seedling box along a seedling box transport path,
At the seedling removal position of the seedling box transport path, the seedlings are taken out from the pot of the seedling box, and in a seedling transplanter for planting the seedlings, the seedlings that could not be taken out of the pot at the seedling removal position are used when the next seedling is taken out . A seedling transplanter comprising a regulating means for regulating the removal of seedlings so as not to interfere.