JPH0515215A - Seedling feeder in transplanter - Google Patents

Abstract

PURPOSE:To feed seedlings without fail by detecting decrease of seedlings on the seedling-retaining plate by right and left sensors and starting supply of seedlings on the spare seedling-retaining plate. CONSTITUTION:If decrease of seedlings on the descending seedling-retaining plate 5 is detected by right and left sensors 27 and 28, supply of seedlings restored on the spare seedling-retaining plate 23 is started. Misdetection due to projection of the bed soil or crumbling of the bed soil caused by incomplete growth of the roots can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to automatic seedling replenishment in a seedling planting machine, and is intended to increase the certainty thereof.

[0002]

2. Description of the Related Art A seedling planting machine cannot carry out seedling transplanting work when seedlings run out on the seedling mounting table during seedling transplanting. In such a case, the seedling planting machine is provided with a spare seedling placing table that holds a spare seedling to be supplied on the seedling placing table. The supply is artificially performed by stopping the operation of the seedling planting machine.

Attempts to automatically perform this replenishment have been widely made, as seen in JP-A-2-135018 and others, but various problems have not yet been put to practical use.

[0004]

One of the problems is the reliability of preliminary seedling supply. That is, a switch, which is one sensor, is provided on the seedling table on which the seedlings descend, and when the upper edge of the seedling table passes over this switch, it is springed up and the switch is turned on, and the preliminary seedling table is placed. The supply of seedlings owned by the stand is started. Of the seedlings that are transplanted here, the mat seedlings that are frequently used have the upper end of the mat seedlings that the part where the switch operates is lifted due to the bending of the soil or the root is broken due to poor growth. May emit a signal when not passing over the switch. Then, due to mistrust, supplementary seedlings will start to be supplied, causing confusion.

[0005]

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention aims to solve the above-mentioned problems by causing seedlings 5 to fall while the seedlings are cut off by a seedling planting rod 6, and the seedlings thereof. A preliminary seedling placing table 23 for holding the seedlings to be supplied on the placing table 5 is provided, and when the two side-by-side sensors 27, 28 detect the decrease of the seedlings on the seedling placing table 5, the preliminary seedling placing table 23 holds the seedlings. The seedling replenishing device for a seedling planting machine is characterized in that it is provided so that the replenishment of seedlings is started.

[0006]

Since the present invention is configured as described above, the seedlings on the seedling mounting table 5 are cut off by the seedling planting rod 6 one by one and transplanted to the field. The seedlings on the seedling mounting table 5 move to the seedling planting rod 6 side while decreasing due to the lack of the seedling planting rod 6. The end of the seedling opposite to the seedling planting rod 6 is a pair of left and right sensors 2
When passing the positions of 7 and 28, each sensor 2
With the signals from 7 and 28, the spare seedling mounting table 23 starts to supply the spare seedlings that the spare seedling mounting table 23 has onto the seedling mounting table 5.

[0007]

[Effect] According to the present invention, the decrease of the seedlings on the seedling mounting table 5 is detected by the two left and right sensors 27 and 28, and the supplementation of the seedlings held by the preliminary seedling mounting table 23 is started based on the detection result. Therefore, the detection result is accurate, and the seedlings can be reliably replenished without the false belief caused by the rise of the bed soil and the false belief of the collapse of the bed soil due to the defective root generation as in the conventional case.

[0008]

Embodiments of the present invention will be described below. Figure 1
As described above, the seedling planting device 3 is attached to the traveling vehicle body 1 by the pair of upper and lower links 2 to form a riding-type seedling planting machine. This seedling planting device 3 includes a gear box 4 at the center, a seedling mounting table 5 provided on the gearbox 4 that is tilted forward and moves left and right, and an oval shape that faces downward from the lower end of the seedling mounting table 5. It is made up of a seedling planting rod 6 whose tip turns in a track, and a float 7 which is provided below the gear box 4 and slides on a mud surface.

A pair of planting cases 8 extend rearward from both sides of the gear box 4 under the seedling table 5, and four sets of seedling rods 6 are provided on the left and right of each of the rear ends of the gearbox 4. It is a planting device 3 for planting. Rail 9 so that it extends across the left and right planting cases 8
Is fixed, and the rail 9 supports the abdomen at the lower end of the seedling planting device 3 so as to move left and right. Also, the pillar 10
Extends upward from the gear box 4, and the slider 11 attached to the upper end of the gear box 4 supports the abdomen in the middle of the seedling stand 5. A seedling receiving plate 12 wider than the seedling mounting table 5 is fixed to the rail 9 so as to cover the lower end of the seedling mounting table 5. This seedling support plate 12
Is provided with four outlets through which the tips of the seedling planting rods 6 pass, and the mat seedlings on the seedling mounting table 5 are cut off by the respective seedling planting rods 6 on the outlets and descended. , Is being transplanted to the mud.

A laterally moving rod 13 is laterally attached to the gear box 4, and is provided so as to reciprocate left and right by the power of the engine of the traveling vehicle body 1. A supporting plate 14 fixed to both sides of the laterally moving rod 13 is provided. Is fixed to the lower abdomen of the seedling mounting table 5 so that the seedling mounting table 5 can be reciprocated left and right by the power of the engine.
As shown in FIG. 2, five support rods 15 and 16 are horizontally fixed to the lower abdomen of the seedling stand 5. The upper and lower ends of the left and right supporting rods 15 extend further than the top of the seedling mounting table 5 and the horizontal shaft 17 is fixed, and the upper end of the center supporting rod 16 extends slightly above the middle of the seedling mounting table 5. Has become. On the upper surface of the seedling mounting table 5, five walls 5a and 5b formed by bending a plate upward are formed, and four mat seedlings are vertically mounted side by side. The seedling mounting table 5 has such a length that two mat seedlings can be placed above and below, and eight mat seedlings can be placed at once. The left and right walls 5a are made narrower than the central wall 5b. Further, the wall 5b at the central portion has an upper surface cut open above the intermediate portion so that a pair of left and right links described below project.

The following are four sets of the same or symmetrical type,
Unless stated otherwise, one of them will be explained. That is, as shown in FIGS. 1 and 2, the motor 18 is provided in the center abdomen of the seedling mounting table 5, and the gear 19 driven by the motor 18 meshes with the gear 21 of the support shaft 20. A link 22 extends from the support shaft 20, and a tip end of the link 22 is rotatably attached to the left side of the preliminary seedling stand 23 by a shaft 36. The preliminary seedling placing table 23 has a size in which both sides of the plate are bent upward so that a preliminary mat seedling is placed vertically on its flat surface. The right side face also has the same link 22 at the same position as the above-mentioned link 22, and the left end thereof has the support shaft 20 of the adjacent gear 21.
It is rotatably supported by. A pair of links 24 extend to the left from the left and right of the upper part of the spare seedling stand 23, and an inverted U-shaped receiver 25 is fixed to the end of the link 24.
7 is engaged in a saddle shape. Also, the links 22 and 24 on the left
The damper 26 is installed between the spare seedling stand 23 and the support rod 1 between
5, the operator holds the left end of the spare seedling mount 23 clockwise and rotates the spare seedling mount 23 around the support shaft 36, as shown by the chain line in FIG. The upper part of the top of the table 5 is opened so that seedlings can be easily supplied.

A pair of left and right seedling feeding belts 37 are provided at the lower part of the seedling placing table 5, and the mat seedlings on the seedling placing table 5 are sent to the seedling planting rod 6 side by the rotation thereof. Switch 27,
28 are provided side by side between the pair of seedling feeding belts 37 and on the wall 5a, and the lower end of the mat seedling is cut off by the seedling planting rod 6 to decrease and fed down by the seedling feeding belt 37. When the upper end of the lever passes the switches 27 and 28, the respective operating pieces stand up and are turned on. The switches 27 and 28 are arranged in series as shown in FIG. 3 and are connected to the motor 18. When the switches are turned on at the same time, the motor 18 rotates normally, the gear 19 drives the gear 21, and the link 22 moves. It rotates in the clockwise direction of 1 and descends so that the preliminary seedling placing table 23 contacts the upper surface of the seedling placing table 5. At this time,
The center portion of the lower end of the spare seedling placing table 23 is cut off, the upper part of the belt 37 engages with the bottom surface of the mat seedling on the spare seedling placing table 23, and the rotation of the belt 37 causes the spare seedling placing table 23 to rotate. The above spare mat seedlings are sent out.

The switch 29 shown in FIG. 3 is used for the seat 3 of the traveling vehicle body 1.
It is provided on the side of 0 and other places, and when this is turned on, relay 3
1 was activated and the motor 18 was rotated in the reverse direction, and the auxiliary seedling stand 2 was lowered.
3 is designed to return to its original position. As shown in FIG. 1, a hopper 32 for putting fertilizer is provided between the seat 30 and the seedling placing table 5, and the fertilizer fed from the feeding section 33 below the fertilizer is guided by the hose 34 to the grooving gutter 35, where It is to be sprayed in mud beside the planting rod 6.

Although the sensor of the embodiment uses a micro switch, a photoelectric tube, a pressure sensitive switch and various other types are used without being particular about this.

[Brief description of drawings]

FIG. 1 is a side view of a seedling planting machine according to the present invention.

FIG. 2 is a plan view of a part thereof.

FIG. 3 is a power distribution diagram of the switch and the motor.

[Explanation of symbols]

 5 Seedling mounting table 6 Seedling planting rod 23 Preliminary seedling mounting table 27 Sensor (switch) 28 Sensor (switch)

Claims (1)

Claims: 1. A seedling mounting table 5 that is lowered while the deposited seedlings are cut off by a seedling planting rod 6, and a seedling that is replenished on the seedling mounting table 5. The auxiliary seedling table 23 is provided so that the two sensors 27, 28 arranged side by side detect that the seedlings on the seedling table 5 have decreased and the supplementary seedling table 23 starts supplying the seedlings. A seedling replenishing device for a seedling planting machine.