JPH07112368B2 - Rice transplanter - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a rice transplanter for planting rice in a paddy field, which can save labor for cultivation management after planting seedlings.

[Conventional technology]

In vegetable cultivation, a black colored film (generally called "vinyl mulch") is attached to the surface of the field, a hole is opened at a predetermined position on this film, and seedlings and seeds are planted in this hole to grow. Has been adopted. According to this film covering cultivation method, there are advantages that the coloring of the film sufficiently absorbs sunlight and keeps it warm, prevents evaporation of water and fertilizer in the field, and also prevents weeds from growing.

[Problems to be Solved by the Invention]

Recently, it has been attempted to apply rice to hydroponic cultivation by taking advantage of the film-covered cultivation method which is carried out in vegetable cultivation as described above.

Rice grown with organic fertilizer using this film-covered cultivation method has the advantage of being less prone to pests than chemical fertilizers, and since it is unnecessary to spray pesticides, it is considered a safe food. It is in.

In this method, a black-colored film is laid on the surface of a paddy field, small holes are opened at appropriate places in the film, and seedlings are planted in the holes.

However, according to this method, because the paddy field is soft, at least two workers hold both ends of the film roll,
While retreating, the film needs to be unwound and laid on the surface of the paddy field, and another worker must plant seedlings while making holes at the specified positions of the film laid on the paddy field. Since the film is not spread evenly on the rice field because it is done by work, it is easy to bend, and wrinkles easily occur, and it is difficult to attach the film to the rice field, so the film is laid accurately on the rice field. I can't.

Moreover, because many workers concentrate on the paddy field to perform the work, the paddy field on which seedlings are planted is roughened to form irregularities, which makes it difficult to perform accurate planting without rising.

An object of the present invention is to provide a rice transplanter that utilizes the advantages of the film covering cultivation method and automates the film laying work and the seedling planting work at the same time.

[Means for Solving the Problems]

The present invention for attaining the above-mentioned object comprises means for laying a film on a front surface of a float of a planting device by spreading the film in the width direction of the planting device as the planting device advances and laying it on a rice field. Means for pressing both edges of the paddle against the paddy field, means for opening a hole at a predetermined position of the film at the same time as planting or prior to planting, and a planting claw for planting seedlings in the hole. It is a machine.

The best means for opening a small hole in the film is to use a planting claw having a cutting function. In this case, planting can be carried out simultaneously with the opening of the hole. Immediately before this planting, another cutting blade can be used for opening in conjunction with the planting operation.

It is necessary to press both ends of the film against the rice field by pressing it, and as a means for this, a film retaining ring is provided on the side of the float, by which both edges of the film are pressed against the rice field and pressed. The method is adopted. However, it is also possible to adopt, as the fixing means, one that slides and presses the end surface of the film like a ski.

[Action]

Along with the advance of the planting device, the film is developed and supplied to the lower side of the float, both edges of this film are pressed against the paddy field by pressure, and a small hole is opened at a predetermined position of this film. , Seedlings can be planted in this hole by planting claws.

Therefore, it is possible to lay the film on the rice field in a state where the film is opened and to surely perform the planting work.

〔Example〕

 Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a side view showing a main part of a rice transplanter according to the present invention, in which a hitch 3 is supported by a parallel link 2 provided at the rear of a mobile device main body 1 so that the hitch 3 can move up and down in parallel. A planting device 4 is supported by 3.

In the planting device 4, a plurality of drive cases 6 are supported by a connecting pin 5 provided in the central portion of the hitch 3 so as to be swingable right and left. A float 7 including a center float and a side float is supported below the drive case 6 via a link, and planting arms 8 are rotatably provided on both sides behind the float 7. A seedling mount 10 is supported in front of the drive case 6 via a support member 9 so as to be capable of intermittently reciprocating left and right while being tilted backward.

An input shaft 12 driven by the moving machine body 1 is provided in front of the drive case 6, and the power of the input shaft 12 gives a planting motion to the planting arm 8 and drives a napier shaft 13 to mount a seedling. The table 10 is intermittently moved left and right in conjunction with the planting movement of the planting arm 8.

A lever 15 for supporting the tight roll 14 is supported by a pin 16 on the front portion of the drive case 6, and the lever 15
The lower movement range is restricted by a stopper 17, and a spring 18 is stretched between the tip portion and the drive case 6 to press the tight roll 14 downward.

Further, the support member 9 supporting the seedling mounting table 10 includes a support member 20
The film roll 21 is supported via.

In the present embodiment, the spring 18 gives an elastic force in the direction of pushing the tight roll 14 downward,
The elastic force may be applied in the opposite direction to the above due to the weight of the tight roll 14 and the lever 15 and the like.

In the case of a six-row planting rice transplanter, as shown in FIG. 2, the float 7 has three floats, a side float and a center float, supported by a lever 30 below the drive case 6. The shaft 22 connecting the lever 30 and the float 7 is extended laterally, and the film retaining ring 23 is provided on the side of the side float.

The film retaining ring 23 can be supported by a shaft provided on the film 7 separately from the shaft 22.

Further, the planting claw 26 provided at the tip of the planting arm 8 has a function of making a small-diameter hole in the film 21a unwound from the film roll 21 and a function of supporting one bite of seedling.

The shape of the hole formed in the film 21a by the planting claw 26 is a circular cutout, and a U shape, a C shape, a U shape or an Ω shape is used so that a part of the hole is connected to the film 21a side. It is possible to do so, and it is necessary to take care not to form an acute-angled cut portion.

The film retaining ring 23 is a float 7 as shown in FIG.
The tread surface is located lower than the lower surface by a distance H.
Then, the edge of the film 21a is pushed into the soil and fixed by the presser ring 23.

The film used in the rice transplanter according to the present invention is
Generally, a black-colored vinyl chloride film sold under the general name of "vinyl mulch" is preferable. For example, a 6-row plant having a width of 300 mm and a width of 1.8 m is used. It should be noted that, in addition to the above-mentioned film, a sheet for covering the rice field surface can be similarly used.

Next, the operation of the rice transplanter according to the present invention will be described.

As the mobile body 1 advances, the film 21a is unwound from the film roll 21 supported on the front portion of the planting device 4,
A plurality of floats 7 unfolded in the width direction by the tight roll 14.
Will be guided below.

As shown in FIG. 2, under the float 7, both edges are pressed by the film presser ring 23, and the float 7 slides on a part of the presser wheel 23 slightly raised from the tread surface to give tension to the film 21a. The field surface is flattened, and the edge of the film 21a is pressed into the soil by pressure and pressure-bonded to the field surface.

Then, the lower end of the mat seedling placed on the seedling placing table 10 is planted with nails.
The film 21a is scraped off by 26 and a hole of a predetermined size is opened in the film 21a which is strained, and at the same time seedlings are planted.

The support member 20 for supporting the film roll 21 is provided in the planting device 4 and rolls together with the planting device 4, so that the film roll 21 can be always parallel to the rice field, and as a result, wrinkles do not occur and the rice field is not generated. The film 21a will be fed along.

Further, the film pressing wheel 23 is located at the same position as the swing fulcrum of the float 7, so that the depth at which the film 21a is pushed into the paddy field is not affected by the planting depth.

Since the float 7 slides on the film 21a which is unfolded and laid on the rice field, the friction force between the float 7 and the film 21a is large, and when the strength of the film 21a is not sufficient, this film 21a May be broken.

In such a case, a device for spraying water as a lubricant can be additionally provided in the front part of the float 7. It should be noted that what is described as a film in the specification is most preferably a vinyl film, but the present invention is not limited to this, and the same applies to a sheet-like material having the same function as this film. Can be applied to.

〔The invention's effect〕

The rice transplanter according to the present invention, in the front part of the float of the planting device, means for laying the film on the paddy field as the planting device progresses, and means for pressing the edge of the film to the paddy field, A planting claw that opens a predetermined position on the film and at the same time planting seedlings, or a means for opening a hole and a planting claw before planting is provided, and the following effects can be achieved. .

(1) Since the work of expanding and laying the film (vinyl mulch etc.) on the rice field and the planting work of seedlings can be performed simultaneously or successively, the planting work of the film-covered paddy rice cultivation is performed with high efficiency. be able to.

(2) Since the float slides on the surface of the film laid on the rice field, planting can be performed while reliably leveling the marks of the upper and lower automobile wheels in the planting section.

(3) Since both edges of the film laid on the rice field are stepped on by the film retaining ring, which is one of the fixing means, the edges of the film can be pressed down and fixed on the rice field, so that the film laid on the rice field Can be prevented.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a side view showing a main part of a rice transplanter, and FIG. 2 is a sectional view taken along line II-II of FIG. 1 ... Mobile device main body, 2 ... Parallel link 3 ... Hitch, 4 ... Planting device 5 ... Connecting pin, 6 ... Drive case 7 ... Float, 8 ... Planting arm 9 ... Support member , 10 …… seedling stand 12 …… input shaft, 13 …… napier shaft 14 …… tight roll, 15 …… lever 16 …… pin, 17 …… stopper 18 …… spring, 19 …… support member 20 …… Supporting member, 21 …… Film roll 22 …… Axis, 23 …… Film retainer ring 25 …… Bracket, 26 …… Planting claw

Claims (1)

[Claims] 1. A means for spreading a film in the width direction of the planting device and laying it on a rice field in front of a float of the planting device, and both edges of the film. A rice transplanter comprising: a means for pressing the sheet, means for opening a small hole at a predetermined position of the film simultaneously with or before planting, and a planting claw for planting seedlings in the hole.