JPH1161A - Supporting pillar for plastic film greenhouse - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject supporting pillar usable for tucking up the film of a plastic film greenhouse in ventilating time by arching the pillar made of a metal pipe coated with a synthetic resin having multiple prominence standing in line allowing the prominence to direct to out side. SOLUTION: The subject supporting pillar A is made by coating the outside wall of the metallic pipe with the synthetic resin, forming multiple prominence 13 in line along the longitudinal direction of the outer wall of the resin layer, setting plural lines of the prominence 13 and adjusting to set one of the lines directs to outside and arching the pillar.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pillar for tunnel cultivation used for agricultural and horticultural purposes. In general, when the internal temperature rises excessively in tunnel cultivation, it is necessary to raise a part of the film and ventilate it to make it an appropriate temperature, and the present invention relates to tunnel cultivation used for raising the film during such ventilation. It is related to a support post.

[0002]

2. Description of the Related Art Conventionally, as a means for picking up and fixing a film of this kind, for example, a film-locking part having a U-shaped cross section and having a film-locking projection at an upper end portion is fitted to an appropriate position of a column. In some cases, the tucked-up film is locked on a film locking projection.

[0003]

However, such a conventional film hoisting method has a drawback that the film locking parts must be attached to a support in advance, which is inferior in workability and costly.

An object of the present invention is to provide a column for cultivating a tunnel used for raising a film at the time of ventilation which has solved the conventional problems.

[0005]

According to the present invention, there is provided a column for cultivating a tunnel according to the present invention, wherein an outer wall of a metal pipe material is covered with a synthetic resin layer, and the outer wall of the synthetic resin layer has a large number along the length direction. Are formed in a row to form a column main body, and the column main body is bent in an arc shape such that the row-shaped projections face outward.

[0006] The tunnel cultivation support of the present invention is formed such that a plurality of rows of projections are formed, and one row of the projections faces outward.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. In the drawings, A is a column for cultivating the tunnel of the present invention, and B is a vinyl film. The column A for tunnel cultivation is obtained by bending the column main body 1 in an arc shape.
The support body 1 has a synthetic resin layer 12 on the outer wall of a metal pipe material 11.
And a number of projections 13 are formed in a row on the outer wall of the synthetic resin layer along the length direction.

As the metal pipe material 1, for example, a steel pipe is used, and as a resin forming the synthetic resin layer 12, an extrudable thermoplastic synthetic resin such as polyethylene, polypropylene, or polyvinyl chloride is appropriately used. You.

It is preferable that a large number of projections 13 are formed simultaneously with the formation of the synthetic resin layer 12 on the outer wall of the metal pipe material 1 in one step.
After coating, a projection 13 is adhered to the outer wall of the synthetic resin layer 12,
It may be formed by fusion or the like. It is sufficient that at least one row of the projections 13 is provided, but it is preferable that a plurality of rows be formed since the column body 1 has no directionality.

In order to bend the column body 1 in an arc shape, it is generally preferable to use a bender. In that case, the row of the projections 13 is directed outward of the bent surface.

[0011]

EXAMPLE As a metal pipe material 1, a steel pipe having a diameter of 14.9 mm and a wall thickness of 0.45 mm was used. The outer wall of the steel pipe 1 was coated with polyethylene as a synthetic resin layer 12 with a thickness of 0.6 mm, and a large number of projections 13 were formed on the outer wall of the polyethylene 12 at substantially equal intervals in four rows. The protrusion 1
3 has a height of 1.3 mm, a width of 2.5 mm, and a height of 5.0 m
m, and the distance between the adjacent protrusions 13, 13 was 15 mm. The support body 1 was cut into a length of 3 m, and the center portion was bent in an arc at a curvature of 250R to obtain a support for tunnel cultivation.

The above-mentioned pillars for tunnel cultivation according to the present invention were erected approximately every 50 cm along the ridges of the field, and covered with a vinyl film from above.

When ventilation is required, the skirt of the vinyl film may be lifted up and hooked on the projection 13. When extending the vinyl film, the hem of the vinyl film may be pulled down.

[0014]

As described above in detail, the pillar for tunnel cultivation according to the present invention has a metal resin layer coated on the outer wall of a metal pipe material, and the outer wall of the synthetic resin layer has a large number of protrusions arranged in a longitudinal direction. The pillar body is formed in a shape and is made into a pillar body, and since the pillar body is bent in an arc shape, when ventilation is required during tunnel cultivation, the skirt of the vinyl film is lifted up and directly hooked to a protrusion at an appropriate position. This allows the vinyl film to be held in a state where the skirt is lifted up without using other locking parts.

Further, when a plurality of rows of projections are formed in the tunnel cultivation column of the present invention, when the column body is bent in an arc shape, any one of the columns of projections may be directed outward, so that alignment can be performed. Easy.

[Brief description of the drawings]

FIG. 1 is a front view of an example of a column for cultivating a tunnel according to the present invention.

FIG. 2 is a cross-sectional view of the use state of the pillar for tunnel cultivation of the present invention.

FIG. 3 is a partially cutaway perspective view showing a use state of a column for cultivating a tunnel according to the present invention.

[Explanation of symbols]

 A pillar for tunnel cultivation B vinyl film 1 pillar body 11 metal pipe material 12 synthetic resin layer 13 protrusion

Claims (2)

[Claims] 1. An outer wall of a metal pipe material is coated with a synthetic resin layer, and a number of projections are formed in a row on the outer wall of the synthetic resin layer along a length direction to form a column body. A pillar for tunnel cultivation in which a pillar body is bent in an arc shape such that a projection faces outward. 2. The column for tunnel cultivation according to claim 1, wherein a plurality of rows of projections are formed, and one row of the projections faces outward.