JPH0767420A - Defective seedling treating apparatus of transplanter - Google Patents

Abstract

PURPOSE:To provide a transplanter for planting a pot seedling to a field while traveling on the field, capable of excluding defective seedling and transplanting exclusively acceptable seedlings and enabling the continuous transplantation work even in the case of detecting a defective seedling. CONSTITUTION:Plural seedling chutes 62 for guiding pot seedlings C from a seedling-receiving tray to a planting means 57 and capable of holding the pot seedling C during the movement of the planting means 57 to the seedling receiving position E are placed between the planting means 57 and the seedling receiving tray to transfer the pot seedlings C one by one to the planting means 57 at a prescribed position. One of the seedling chutes 62 is placed at the seedling delivery position and the other seedling chutes 62 are positioned at the seedling non-delivery positions and acceptable seedlings are held in the chutes. These seedling chutes 62 are supported in a state to enable free exchange of their positions and, when a defective seedling is detected, the seedling chute 62 holding the defective seedling and positioned at the seedling delivery position F is moved to a seedling non-delivery position G and the seedling chutes 62 at the seedling non-delivery position G is transferred to the seedling delivery position F.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for treating defective seedlings in a transplanter, which sequentially transplants pot seedlings such as cabbage and lettuce into ridges while running.

[0002]

2. Description of the Related Art As a transplanter for transplanting pot seedlings to a field, there is one described in JP-A-4-16106.
This is a seedling box with many pots arranged vertically and horizontally.
Seedling pushing-out means for pushing out horizontal one-row pot seedlings from behind, and seedling feeding means for arranging a large number of seedling receiving trays for receiving the pushed horizontal one-row pot seedlings endlessly and for intermittently moving laterally By tilting the seedling receiving tray on the seedling feeding side of the seedling feeding means, each potted seedling on the seedling receiving tray is slid down and handed over to the planting means.

[0003]

By the way, all pot seedlings grown in a seedling box do not necessarily germinate and grow well. Therefore, before handing over to the planting means, the quality of the seedlings is checked. Inspected and rejected seedlings should be eliminated. Therefore, in the seedling feeding means, a sensor is arranged one pitch before reaching the seedling feeding portion, and the defective seedlings are detected and the seedling receiving tray is not tilted so that the defective seedlings do not fall to the planting means. Is being considered.

However, in the above-mentioned one, although the defective seedlings can be eliminated, the traveling device and the planting means must be stopped until the good seedlings come to the delivery position to the planting means, and the planting work efficiency is improved. There is a problem of being bad. In view of the above problems, it is an object of the present invention to eliminate defective seedlings so that only good seedlings can be transplanted, and even if defective seedlings are detected, they can be continuously transplanted.

[0005]

The technical means taken by the present invention to achieve the above-mentioned object is a large number of pot parts 31.
A plurality of seedling receiving trays 37 for receiving the pot seedlings C extruded from the seedling box 30 provided with are provided endlessly, and these seedling receiving trays 37 are intermittently moved so that the seedling receiving trays 37 at predetermined positions In a transplanter configured to deliver C one by one to the planting means 57 and detect whether or not the pot seedlings C are defective seedlings before delivering to the planting means 57, A seedling shooter capable of guiding the pot seedling C from the seedling receiving tray 37 to the planting means 57 between the receiving tray 37 and the planting means 57 and holding the pot seedling C while the planting means 57 moves to the seedling receiving position E. A plurality of 62 are provided, one seedling shooter 62 of which is placed at the seedling delivery position F, and the other seedling shooter 62 is placed at the non-seedling delivery position G and retains good seedlings. Each seedling shooter 62 is movably supported so that the seedling shooter 62 at the seedling delivery position F that holds the seedlings is moved to the non-seedling delivery position G and the seedling shooter 62 at the non-seedling delivery position G is moved to the seedling delivery position F. There is a point.

[0006]

[Operation] Pot seedlings extruded from the seedling box are received by endless seedling receiving trays, are intermittently fed, and are delivered one by one from the seedling receiving tray to the planting means through the seedling shooter at a predetermined position. To be done. The seedling shooter holds pot seedlings while the planting means moves to the seedling receiving position.

When a defective seedling is detected, the seedling shooter at the seedling delivery position holding the defective seedling is moved to the non-seedling delivery position and the seedling shooter at the non-seedling delivery position holding the good seedling is delivered. Move to position. The defective seedlings are excluded at the non-seedling delivery position, and the seedling shooters from which the defective seedlings have been excluded are replenished with good seedlings.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 3 and 4, the transplanter 1 is a walking type having a steering handle 3 at the rear of the traveling vehicle body 2 and is adapted to travel in the longitudinal direction across a ridge A covered with a multi-film. . An engine 5 is mounted on a pedestal 4 at the front part of the traveling vehicle body 2, and the engine 5 is covered with a bonnet 7 having a spare seedling box mounting base 6 on the left and right,
Further, a transmission case 8 is fixed to the rear portion of the gantry 4, and an input portion of the transmission case 8 and an output portion of the engine 5 are wound around a transmission member 9.
Are linked together.

From the inside of the mission case 8, the wheel transmission shaft 1
0 and the PTO shaft 12 for driving the working unit 11 take out power, and the left and right ends of the wheel transmission shaft 10 are interlocked with the left and right drive wheels 13, and the drive wheel 13 is Roll in the groove B between the ridges A. The working unit 11 includes a seedling transfer device 14, a planting device 15, a multi-punching device 16, and the like, and swings vertically around the power receiving shaft 17 supported on the fixed side of the mission case 8 and the like. The movable frame 18 is provided, and the rear portion of the movable frame 18 is elastically and suspendedly connected to the main frame 20 of the traveling vehicle body 2 by elastic supporting means 19. A bevel gear 21 that engages with the PTO shaft 12 is fixed on the power receiving shaft 17.

The seedling transfer device 14 includes a seedling box vertical feed mechanism 22.
, A seedling pushing mechanism 23, a seedling lateral feeding mechanism 24, and a defective seedling detecting mechanism 25, which are mounted on the movable frame 18 via a pair of front and rear stays 26 and the like. As shown in FIGS. 5 to 7, the seedling box vertical feed mechanism 22 is arranged along a pair of front and rear central guide rails 27 curved in an arcuate shape, and on the front side of the central guide rail 27 and along the lower half. Seedling box guide means 29 having a pair of front and rear side guide rails 28 is provided. The seedling box 30 is made of resin and has flexibility, and is provided with a plurality of pot portions 31 arranged vertically and horizontally so as to project on the back surface, and pot seedlings C are raised in the pot portion 31.
The seedling box 30 is inserted from a trumpet-shaped insertion opening in the upper part of the side guide rail 28, and is laterally inserted from an outlet in the lower part.

Further, the seedling box vertical feed mechanism 22 includes a seedling box 30.
Is provided with a pair of left and right feed pawls 32 for intermittently feeding the pots by one pitch in the vertical direction. The feed pawls 32 enter the space between the pot portions 31 adjacent in the vertical direction, and move downward and then exit. It has become. The seedling pushing mechanism 23 is provided with a pusher 33 for sticking out the horizontal rows of pot seedlings C from the rear of the seedling box 30 through the holes formed in the bottom wall of the pot portion 31.

As shown in FIGS. 6 to 8, the lateral seedling feeding mechanism 24 wraps an endless chain 36 around a drive sprocket 34 and a driven sprocket 35 which is disposed in front of and behind the drive sprocket 34. A large number of seedling receiving trays 37 are arranged in a row at intervals over the entire circumference in the longitudinal direction. The drive sprocket 34 is fixed to the drive shaft 38, and as shown in FIGS.
The driven wheel 40 of 9 is fixed, and the driven wheel 4 of the Geneva gear 39 is fixed.
1 is fixed on an intermediate shaft 42 parallel to the drive shaft 38. The intermediate shaft 42 is interlockingly connected with a cylinder shaft 44 fitted onto a support shaft 43 parallel to the intermediate shaft 42 via a chain transmission mechanism 45, and the cylinder shaft 44 is interlocked with the power receiving shaft 17 via a chain transmission mechanism 46. It is connected.

Therefore, the seedling lateral feed mechanism 24 is driven by the power from the PTO shaft 12 protruding from the mission case 8.
In this embodiment, the seedling lateral feeding mechanism 24 causes the seedling receiving tray 37 to rotate by ¼ rotation of the driven wheel 40 of the Geneva gear 39.
Is driven so as to intermittently move backward by one pitch. Further, as shown in FIGS. 9 and 10, four pins 47 arranged at equal intervals in the circumferential direction are fixed to the driven wheel 40 of the Geneva gear 39, and the driven wheel 40 is driven.
A proximity sensor 48 (or a limit switch or the like) that detects the pin 47 is provided in the vicinity of. The proximity sensor 48 detects the pin 47 when the driven vehicle 40 is stationary. By detecting the intermittent operation of the driven vehicle 40, the proximity sensor 48 detects the movement of the seedling receiving tray 37 of the lateral seedling feeding mechanism 24. It is supposed to do.

The seedling receiving tray 37 is swingable about a front-rear axis 49 from a horizontal posture to an inclined posture, and is biased by a torsion coil spring 50 so as to change from the horizontal posture to the inclined posture. Further, the seedling receiving tray 37 is held horizontally by the guide rails 51 on the upper side, and each pot seedling C extruded by the seedling pushing mechanism 22 is received by each upper seedling receiving tray 37. To be done.

The guide rail 51 is formed with a lowering portion 51A which is lowered by one step on the drive sprocket 34 side of the lateral seedling feeding mechanism 24. When the seedling receiving tray 37 arrives at the lowering portion 51A, the spring 50 forcibly forces it. The pot seedling 31 on the seedling receiving tray 37 is changed to the inclined posture and the block soil b
It is designed to be dropped from the side and sent out. The defective seedling detection mechanism 25, as shown in FIGS. 6 and 8, has a seedling detection sensor 5 arranged one pitch above the seedling delivery position.
2, an operating means 53 for moving the same up and down, and a contact member 54 provided on the whole seedling receiving tray 37.

The contact member 54 is pivotally supported by the seedling receiving tray 37, and a contact portion 54A that comes into contact with the foliage a of the pot seedling C and a sensing portion 54 that protrudes in a direction intersecting with the contact portion 54A.
When the stem and leaf a contact the contact portion 54A, the sensing portion 54B faces upward (detecting posture), and when the pot seedling C has no stem and leaf a, the sensing portion 54B faces downward (non-detecting posture). It is like this.

The seedling detection sensor 52 is formed of a limit switch or the like, the actuating means 53 is formed of a rotary solenoid or the like, and the seedling detection sensor 52 is attached to the rotary shaft of this rotary solenoid and the detection piece is attached to the contact member 54. 52
The tip of A rotates so as to move vertically. The actuating means 53 is actuated by the detection signal of the proximity sensor 48 in the vicinity of the driven wheel 40 of the Geneva gear 39, and actuates surely in synchronization with the movement of the seedling receiving tray 37. And the seedling receiving tray 37
When the seedlings move 1 pitch and stand still, the actuating means 53 lowers the detection piece 52A of the seedling detection sensor 52, and the detection piece 52A comes into contact with the detection portion 54B when the contact member 54 is in the foliage a detection state. After detecting it, after the detection, the seedling receiving tray 37 is returned to the upper position before moving.

Further, when the foliage a is not present, the detection piece 52A does not come into contact with the detection portion 54B even if it descends.
The seedling detection sensor 52 detects that the seedling on the seedling receiving tray 37 is a defective seedling. In the planting device 15, as shown in FIG. 5, a parallel link 56 is supported on the movable frame 18 via a suspension link 55 so as to be swingable in the vertical direction, and a beak tubular opening / closing is provided at the tip of the parallel link 56. Flexible planting cylinder 5
7 (planting means).

The parallel link 56 is biased upward by a spring, and an oblong fitting body 58 is fixed to the upper link thereof, and a rotatable roller 60 around a support shaft 59 is fitted to the fitting body 58. I am fit. Further, the support shaft 59 is interlocked with the power receiving shaft 17 through a chain transmission mechanism 61, and the roller 60 rotates around the support shaft 59 by the power from the PTO shaft 12, whereby the parallel link 56 moves forward and backward. While swinging, it also swings up and down, and the upper limit of the planting cylinder 57 is restricted by a stopper (not shown), so that the planting cylinder 57 moves up and down so as to draw a locus D as shown in FIG. ing.

The multi-punching device 16 is provided in front of the planting cylinder 57. The punching device 16 has a gas burner that uses the gas of a propane gas cylinder as a fuel, and burns the mulch film covered with the ridge A at regular intervals in the ridge longitudinal direction to form holes. Then, the descending planting cylinder 57 projects into this hole and the pot seedling C is transplanted into the ridge A.

Two seedling shooters 62 are provided between the seedling feeding side of the seedling lateral feeding mechanism 24 and the planting cylinder 57. The seedling shooter 62, as shown in FIG. 1 and FIG.
An upper and lower open tubular body 63, and a pivot 6 is attached to the lower portion of the tubular body 63.
And a lid 65 that is pivotally supported via 4 and that opens and closes the lower end opening of the tubular body 63 in an openable and closable manner. Of the two seedling shooters 62, one seedling shooter 62 is the seedling receiving tray 37.
The seedling receiving tray 37 is arranged between the seedling sending position of the seedlings and the seedling receiving position E of the planting cylinder 57, and at this position (seedling receiving position F).
The pot seedling C dropped and delivered from is guided to above the seedling receiving position E of the planting cylinder 57, and is held while the planting barrel 57 moves to the seedling receiving position E.

When the planting cylinder 57 arrives at the seedling receiving position E, the lid 65 is opened in conjunction with the operation of the planting cylinder 57 (or by a driving means such as a rotary solenoid or a motor). The pot seedling C is dropped and supplied to the planting cylinder 57. Also, another seedling shooter 62
Is placed at the non-seedling delivery position G and holds good seedlings.

The tubular body 63 of each seedling shooter 62 is supported by a boss 67 at the upper end of a rotary shaft 66 provided in the center between the two via an arm 68, and rotates the rotary shaft 66 about its axis. As a result, the positions of both seedling shooters 62 are switched to each other. Then, when the defective seedling detected by the defective seedling detection mechanism 25 is delivered to the seedling shooter 62 located at the seedling delivery position F, the rotation shaft 66 is rotated around the axis, and the planting cylinder 57 is removed. Before moving to the seedling receiving position E, the seedling shooter 62 in the seedling delivering position F that holds the defective seedlings and the non-seedling delivery position G that holds the good seedlings.
Replace the seedling shooter 62 in.

After that, the lid 65 of the seedling shooter 62, which has been moved to the non-seedling delivery position G, is opened to eliminate defective seedlings and to replenish good seedlings. As a result, defective seedlings are eliminated and only good seedlings are transplanted. In the above embodiment, the number of seedling shooters 62 is not limited to two and may be three or more.

[0025]

According to the present invention, the pot seedling is guided from the seedling receiving tray to the planting means between the seedling receiving tray and the planting means, and the pot seedling is held while the planting means moves to the seedling receiving position. There are multiple possible shooter shooters, one of which is located at the seedling delivery position, the other shooter is located at the non-seedling delivery position, and holds good seedlings. The seedling shooter at the seedling delivery position holding the seedlings was moved to the non-seedling delivery position, and the seedling shooter at the non-seedling delivery position was moved to the seedling delivery position. Therefore, only good seedlings can be transplanted, and even if bad seedlings are detected, they can be continuously transplanted, resulting in good work efficiency.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a main part of the present invention.

FIG. 2 is a plan view showing a main part of the present invention.

FIG. 3 is a side view of the transplanter.

FIG. 4 is a plan view of the transplanter.

FIG. 5 is a side view of a working unit.

FIG. 6 is a rear view of the working unit.

FIG. 7 is a plan view of a working unit.

FIG. 8 is a perspective view of a seedling lateral feeding mechanism and a defective seedling detection mechanism.

FIG. 9 is a schematic view of a power transmission system of a seedling lateral feeding mechanism.

FIG. 10 is a side view of a driven wheel of a Geneva gear.

[Explanation of symbols]

 30 seedling box 31 pot part 37 seedling receiving tray 57 planting cylinder (planting means) 62 seedling shooter C pot seedling E seedling receiving position F seedling delivering position

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuji Izumino 1-1-1 Amagasaki City, Hyogo Prefecture Electronic Technology Center, Kubota Corporation (72) Inventor Yuuji Watanabe 1-1-1 Amamazaki City, Hyogo Prefecture Kubota Technology Development Center Electronic Technology Center

Claims (1)

[Claims] 1. A large number of endless seedling receiving trays (37) for receiving potted seedlings (C) extruded from a seedling box (30) having a large number of pot portions (31) are provided endlessly. 37) is moved intermittently so that pot seedlings (C) are transferred one by one from the seedling receiving tray (37) to the planting means (57) at a predetermined position, and also to the planting means (57). In a transplanter configured to detect whether or not the pot seedling (C) is a defective seedling before delivery, in the seedling receiving tray (37) and the planting means (57), a seedling receiving tray ( 37) A seedling shooter (62) capable of guiding the pot seedling (C) from 37) to the planting means (57) and holding the pot seedling (C) while the planting means (57) moves to the seedling receiving position (E). Provide a plurality of seedlings, one of which is the seedling shooter (62). The seedling delivery position (F), the other shooter shooter (62) is placed in the non-seedling delivery position (G), and holds good seedlings. ) Seedling shooter (62)
Was moved to the non-seedling delivery position (G) and the seedling shooter (62) at the non-seedling delivery position (G) was moved to the seedling delivery position (F). A defective seedling treatment device for a transplanter, which is characterized in that