JPH08103172A - Structure for feeding soil in seeding plant - Google Patents

Abstract

PURPOSE: To enable the storing of a different amount of soil according to various forms in a tank for temporarily storing bed soil or cover soil in a seeding plant. CONSTITUTION: This structure for feeding soil in a seeding plant is obtained by installing delivery rate sensors 17 and 18 for sensing the amount of soil delivered from outlets of soil feeders 3 and 6 into the interior of each nursery box 2 and further providing supply mean 15 and 16 for supplying the same amount of soil as that delivered from the outlets of the soil feeders 3 and 6 to tanks 7 and 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seeding plant in which soil and seeds are continuously placed in a nursery box for growing seedlings for planting crops.

[0002]

2. Description of the Related Art An example of the seed plant described above is disclosed in Japanese Patent Laid-Open No. 4-234918. In this seeding plant, first, a soil feeding device for floor soil (see the above-mentioned publication) while continuously feeding a nursery box (2 in the above-mentioned publication, 1) by a conveyor (1 in the above-mentioned publication). From 3) in Fig. 1, soil is fed into the nursery box to form a bed soil. Next, seeds were sown on the bed soil of the seedling raising box by a seeding device (5 in FIG. 1 of the publication), and the seeds were placed in the seedling raising box from a soil supply device for covering soil (6 in FIG. 1 of the publication). The soil is fed and the soil is formed on the seeds in the nursery box.

In the above seeding plant, the soil is replenished to the tanks (7 and 8 in FIG. 1 of the above publication) of the soil supplying device as follows. A contact-type sensor that detects the presence or absence of soil at a predetermined vertical position in the tank (see FIG. 1 of the above publication).
15a, 15b, 16a, 16b) and the soil is automatically placed in the tank from the transport device (14 in FIG. 1 of the above publication) so that the soil surface is located between the upper and lower sensors. It is configured to replenish. As a result, a certain amount of soil is always stored in the tank regardless of how much soil is fed from the soil supply device to the nursery box.

[0004]

In the above-mentioned seeding plant, the soil and seeds are put in the seedling raising box without putting anything in the seedling raising box, or the soil and seeds are put in the pot raising sheet put in the seedling raising box. (See Japanese Utility Model Laid-Open No. 1-98550 and Japanese Patent Application Laid-Open No. 59-187707), and a form in which seeds for soil and vegetables are put in a nursery box, so that various forms can be obtained. There is. As a result, the capacity of the tank is set to be large so that it can be used in various forms (for pot sheets and vegetables, a lot of soil is placed in the nursery box) so that it can be used in various forms. The positions of the upper and lower sensors in the tank are set so that much soil is stored.

On the contrary, in the case of a form in which the soil is little consumed (a small amount of soil is not put in the seedling raising box when there is no pot sheet in the seedling raising box), the amount of soil fed out from the soil supply device is large. Therefore, if a lot of soil is stored in the tank as described above, the pressure from the soil in the tank causes
A soil bridging phenomenon may occur near the connecting portion between the tank and the soil supplying device, which may lead to soil clogging. It is an object of the present invention to prevent clogging of soil in a tank due to a bridge phenomenon in a seeding plant configured to cope with various forms of different soil consumption.

[0006]

A feature of the present invention is that the soil supply structure of the seed plant as described above is configured as follows. That is, a tank for temporarily storing the floor soil or the cover soil, and a soil supply device for putting the soil in the tank into the nursery box sent on the conveyor are provided and fed from the outlet of the soil supply device to the nursery box. The feeding amount sensor for detecting the amount of soil and the replenishing means for replenishing the tank with the amount of soil fed from the outlet of the soil feeding device based on the detection of the feeding amount sensor are provided.

[0007]

[Action]

[I] With the configuration according to the present invention, for example, in the case where the amount of soil consumption is small as shown in FIG. 1, the amount of soil to be put into the tanks 7 and 8 first may be set small as shown by the solid line. . As a result, when the soil is fed from the soil feeders 3 and 6 to the seedling raising box 2 as the sowing work progresses, the amount of the fed soil is detected by the feed amount sensors 17 and 18, and the feeding means 15 and 16 are used. The same amount of soil as the amount fed from the soil supply devices 3, 6 is replenished in the tanks 7, 8, and the amount of soil in the tanks 7, 8 is always maintained in the state shown by the solid line in FIG. Therefore, the pressure from the soil in the tanks 7 and 8 can be reduced to suppress the bridging phenomenon of the soil in the vicinity of the connection portion of the soil supply devices 3 and 6.

On the contrary, in the case where the amount of soil consumed is large, the amount of soil to be put in the tanks 7 and 8 may be set to be large as shown by the dashed line in FIG. As a result, the same amount of soil as the amount fed from the soil supply devices 3, 6 is replenished to the tanks 7, 8 by the replenishing means 15, 16 so that the amount of soil in the tanks 7, 8 is always the same. The state shown by the alternate long and short dash line in FIG. 1 is maintained. In this way, it is possible to store a desired amount of soil in the tank corresponding to various forms in which soil consumption is different.

[II] As described above, as a configuration for storing a desired amount of soil in the tank, a position sensor for detecting the position of the surface (level) of the soil in the tank, the amount of soil to be stored in the tank So that the soil surface (level) is located at the position set by the setting device and the position set by the setting device,
It is conceivable to provide a control device or the like for activating the replenishing means based on the detected value of the position sensor, but such a configuration would be complicated and large-scale overall.

On the other hand, when the configuration of the present invention is adopted,
The position of the soil surface (level) of the tank is set depending on how much soil is put in the tank at the start of operation, and after this, the amount of soil in the tank is the amount of soil added at the start of operation. Therefore, the complicated and large-scale devices such as the position sensor, the setting device, and the control device described above are not required.

[0011]

As described above, in a sowing plant constructed so as to be capable of coping with various forms of different soil consumption, it becomes possible to store the amount of soil corresponding to each form in a tank. In particular, the workability could be improved by suppressing the bridge phenomenon especially when the amount of soil stored in the tank is small. Then, the amount of soil to be stored in the tank can be changed by simply changing the amount of soil in the tank at the start of operation. It is not necessary and is advantageous in terms of simplification of structure and cost reduction.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. The whole seeding plant is shown in FIG. 1, and an empty nursery box 2 is sent from the left side of the drawing to the right side of the drawing on the conveyor 1. First, the soil is supplied from the soil supplying device 3 for floor soil into the empty nursery box 2 and spread, and the floor soil is formed in the nursery box 2, and the excess floor soil is scraped off by the rotary brush 4. Go. Next, seed paddy is sown from the seeding device 5 on the bed soil in the seedling raising box 2, and soil is supplied from the soil supplying device 6 for covering soil to the seed pad in the seedling raising box 2 to form a cover soil. . As described above, the seedling-raising box 2 that has been sown is further sent to the right side of the paper, stacked in multiple stages, and sent to the germination chamber (not shown).

The soil supplying device 3 for the above-mentioned floor soil and covering soil
Each of the tanks 6 and 6 is provided with a tank 7 or 8 for temporarily storing soil.
Takes out the soil one by one. Next, a configuration for replenishing the tanks 7 and 8 with soil will be described. As shown in FIG. 1, a soil storing section 9 is provided for storing soil, and the soil in the soil storing section 9 is sent to a receiving section 11 by a first conveyor device 10 of a belt conveyor type. At the time of soil supply from the soil supply device 3 for floor soil, at the time of scraping by the brush 4 and at the time of soil supply from the soil supply device 6 for covering soil, the soil spilled from the seedling raising box 2 is conveyed by the belt conveyor type second transfer. The apparatus 12 collects and conveys it, and sends it to the receiving unit 11.

The soil of the receiving portion 11 is scraped off and lifted by a bucket type lifting device 13.
The lifting device 13 is configured by fixing a plurality of buckets 13b to a wide rubber belt 13a, and by rotating the rubber belts 13a in the clockwise direction of the paper surface of FIG. 1, each bucket 13b scratches the soil of the receiving portion 11. Pick up and go.

A bifurcated chute 14 extends downward from the upper end of the lifting device 13, and a pair of belt conveyor type feeding devices 15 and 16 (corresponding to replenishing means) are arranged at the lower end of the chute 14. Feeding device 15,
Motors 15a and 16a for driving the 16 in the forward and reverse directions are provided. At the lower outlets of the soil supply devices 3 and 6, there are provided feed amount sensors 17 and 18 (optical type or electrostatic capacitance type) for detecting the amount of soil fed from the outlets, and the feeding devices 15 and 16 are provided. Similarly, the feed amount sensors 19 and 20 for detecting the feed amount of soil are also provided at the ends of the.

With the above structure, for example, in the case where the soil consumption is small, as shown by the solid line in FIG.
Set a small amount of soil to put in 8. As a result, when the soil is delivered from the soil supply devices 3 and 6 to the seedling raising box 2 as the sowing work progresses, the delivery amount sensor 17,
The amount of soil fed by 18 is detected, and the motor 1
The feeding devices 15 and 16 are normally driven by 5a and 16a, and based on the detection of the feeding amount sensors 19 and 20, the same amount of soil as the amount fed from the soil feeding devices 3 and 6 is supplied to the tanks 7 and 8. To be done.

When this replenishment is completed, the motor 15
When a and 16a are driven in reverse, the soil from the lifting device 13 and the chute 14 is sent to the duct 21 by the sending devices 15 and 16, and is returned from the duct 21 to the soil storage section 9. In this way, since the same amount of soil as the amount fed from the soil supply devices 3, 6 is replenished in the tanks 7, 8, the amount of soil in the tanks 7, 8 is always maintained in the state shown by the solid line in FIG. To be done. On the contrary, in the case of consuming a large amount of soil, as shown by the alternate long and short dash line in FIG. As a result, the same amount of soil as the amount fed out from the soil supplying devices 3, 6 is replenished in the tanks 7, 8 in the same manner as described above, and the amount of soil in the tanks 7, 8 is always shown in FIG.
The state shown by the alternate long and short dash line is maintained.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a front view of the vicinity of a conveyor, a tank, and a soil feeder in a seeding plant.

[Explanation of symbols]

 1 Conveyor 2 Nursery box 3,6 Soil supply device 7,8 Tank 15,16 Replenishment means 17,18 Feeding amount sensor

Claims (1)

[Claims] 1. A tank (7), (8) for temporarily storing floor soil or cover soil, and a tank (7), (8) in the nursery box (2) sent on a conveyor (1). A soil feeding device (3), (6) for feeding soil is provided, and feeding for detecting the amount of soil fed out to the seedling raising box (2) from the outlet of the soil feeding device (3), (6). Based on the detection of the quantity sensors (17) and (18) and the feeding quantity sensors (17) and (18), the amount of soil fed from the outlets of the soil feeding devices (3) and (6) is Replenishment means (15), (1) for replenishing the tanks (7), (8)
6) The soil supply structure of the sowing plant, which comprises