JPH05103549A - Method for stretching plastic sheet for growing in plastic greenhouse - Google Patents

Abstract

PURPOSE:To efficiently stretch a plastic sheet for growing in a plastic greenhouse on a roof by installing rollers so as to straddle valley parts formed form arch pipes, sliding a rolled plastic sheet on the rollers, pulling up the sheet and placing the sheet on the valley parts of the roof. CONSTITUTION:Rollers 4 straddling valley parts formed from arch pipes 2 installed side by side and the arch pipes 2 in the adjacent row are arranged and a rolled plastic sheet 5 placed on the ground is slid on the rollers 4, pulled up and placed on the valley parts of the roof. The plastic sheet 5 is then developed and stretched over the roof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for efficiently pulling up or pulling down a plastic sheet in a greenhouse cultivation house (hereinafter referred to as "vinyl house") of a type. Is.

[0002]

2. Description of the Related Art At present, various fruits and the like are provided by greenhouse cultivation. This makes it possible to cultivate varieties that cannot be cultivated in the open field, emphasize rare value and raise prices by shipping adjustments such as shipments that are delayed, and also allow rational allocation of labor. Because of its advantages, it costs more than open-field cultivation, but it is very popular.

In greenhouse cultivation, there is no heating (that is, a non-heating method in which the outside air is simply shut off and the room is heated by sunlight), and positive heating is performed by using electric heat, heavy oil combustion, solar heat, or geothermal heat. Different heating methods) are usually classified. There are various structures depending on the type of plant to be used and the installation environment, but the glass greenhouse type, which was the mainstream in the past, has not been newly built because it requires a large amount of capital and has replaced the vinyl house. The fact is that there is.

[0004]

That is, it can be said that the greatest advantage of the vinyl house is that the construction cost is low. However, regarding the durability, there is a problem that the sheet portion is easily deteriorated as compared with glass. Therefore, when releasing the coating heating at the end of the covering period of the roof sheet, it is very uneconomical to wait for the next covering period while leaving the wound sheet on the roof, and generally it is Every time, pulling work and pulling down work are performed. It is said that new sheets need to be renewed once in a year or two even after being carefully stored during such an unnecessary period. (Of course, even with such frequent sheet replacement, the overall cost is still cheaper than glass greenhouses.)

[0005] In such work, a sheet wound in a roll shape is pulled up on a roof to be developed and covered, or a sheet is rolled on the roof and pulled down, but a vinyl house whose height exceeds 2 m is used. Therefore, it is difficult to pull up and down the sheet on the roof part. In other words, the main pillars, horizontal pipes, arch pipes, etc., which are the skeleton parts of vinyl houses, are usually connected by bolts and nuts, but when pulling up a sheet rolled into a roll onto the roof, for example, such connecting parts There is a risk that the sheet may get caught in the protruding part and may be damaged. Therefore, for the work, usually one sheet is to be pulled out from the ground so that it does not hang on the skeleton, to receive it at the top of the roof, and to pull this sheet onto the roof. In particular, the work of the person who sends the sheet from the ground to the roof and the person who receives it on the roof so as not to catch the sheet and damage it is done by sandwiching the folding point of the heavy roll sheet. It was a painful job that requires both labor and attention because it is a job of.

In some houses, plastic sheets forming a roof portion are stretched at two-layer intervals. In such a case, the work of pulling up the plastic sheet on the lower side (also called inner lining) from the ground is extremely troublesome because the arch pipe that is the skeleton part of the roof on the upper side (also called outer lining) is an obstacle, The difficulty was even greater.

In addition, the actual state of fruit tree agriculture in recent years is often performed mainly by elderly people and women who are not suitable for performing such labor-intensive work, and in the field, it is efficient. There was a long-awaited way to lift the seats onto the roof.

[0008]

Therefore, the present inventor has finally completed the method of the present invention as a result of earnest research in view of the above points, and is characterized in that an arch pipe is connected in series. In a greenhouse for greenhouses in which a skeleton formed by arranging a plurality of rows is covered with a plastic sheet to form a roof portion, a roller that straddles the arch pipes that are continuously provided and the valleys formed by the arch pipes in the adjacent row , And the roll-shaped plastic sheet on the ground,
Slide on the roller, pull up and place it on the roof valley,
A house in which a double roof portion is formed by unfolding the plastic sheet and then tensioning it on the roof, or by covering the plastic sheet on the upper and lower parts of the skeleton formed by continuously connecting the arch pipes in two steps. In the cultivation house, the coating of the plastic sheet on the lower arch pipe is first near the top position of the upper arch pipe,
Suspend the roller support so that the roller body is located near the top of the lower arch pipe or at a position slightly higher than that, and pull up the rolled plastic sheet on the ground by sliding on the roller. Is placed near the top position of the lower arch pipe, and then the plastic sheet is unfolded and stretched on the roof.

Here, the "arch pipe" is one of the frame members of the roof part of the house to which the method of the present invention is applied,
The roof portion is constructed by arranging a large number of them and covering them with a plastic sheet. Therefore, the house that adopts the arch pipe in this way has a semi-cylindrical roof. In one of the methods of the present invention, the method is not a single-row type but a multi-row type (a house having at least two rows, which is generally called a multi-story house). In another one of the methods of the present invention, the arch pipe has two upper and lower portions.
It is a tier, so that the two plastic sheets that make up the roof can be spaced apart. In addition,
In the former, there is no limitation as to whether or not the arch pipe has two steps, and in the latter, whether the house is a multi-story type.

In the case of making a multi-story roof, a sheet wound in a roll shape is once placed along the valley portion of the roof, and then this sheet is unfolded. When making a two-tiered roof, the lower side is first stretched and then the upper side is stretched. The method of the present invention is a method for facilitating the pulling or pulling down of the sheet on the roof in this way, and the "roller" is a member used for that purpose, and the use of this is the greatest feature of the present invention. is there. The sheet is pulled up or down from the ground to the roof with the roller position as a bending point.

The structure of the roller is not particularly limited, but it is preferable that the roller is provided with a collar so that the sheet does not slip and come off during the work. Further, the rotation may be limited to one direction so that the roller surface does not rotate in the direction in which the sheet is lowered during the work. In addition, various pipes are crossed at the end of the house, and since it is also the end of the main pillar and the valley pipe, such end and bolts and nuts etc. as fixtures are present as protrusions. May damage the seat. Therefore, when it is used at the end portion, it is preferable to fix the roller so as to be located outside the house in order to avoid this portion. However, such a device is effective only when the roller is installed near the protruding portion of the house end,
In other cases, there is no problem if the arch pipe is fixed in the vertical direction.

Further, the plastic sheet is wound in a roll shape, but its length is usually considerably long (often more than 50 m), so that some auxiliary rollers are arranged on the way to facilitate movement of the entire sheet. If it is set, workability is further improved. However, the use of the auxiliary roller is not limited in the method of the present invention. Therefore, when used, it may have any structure, but basically it may be the same as the roller described above.

The term "vinyl house" includes other plastics because vinyl chloride was initially used rapidly and in a wide variety of fields in the early stages of agriculture using soft plastic sheets (and films). This is what is called in this way, and in this specification, according to this, it is defined as including polyethylene and other plastics. Further, the term “sheet” used in the present specification is not a narrow sense to distinguish it from “film” by its thickness, and there is no limitation on the thickness.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The method of the present invention will be described in more detail with reference to the drawings.

FIG. 1 shows a skeleton part of a greenhouse for viticulture as an example of a vinyl house for carrying out the method of the present invention. As is clear from the figure, the skeleton of this house is composed of a main pillar 1, an arch pipe 2, a horizontal pipe 3, and the like. The skeleton responsible for the roof surface is the arch pipe 2, which is divided into a sturdy one directly connected to the main pillar 1 and an auxiliary one connected to the horizontal pipe. The roller 4 which will be described later is installed on a sturdy arch pipe directly connected to the main pillar.

FIG. 2 shows an example of the roller 4. The roller 4 is a cylindrical body that is rotatable with respect to the shaft 41, and flanges 42 are provided at both ends of the roller 4 to prevent the plastic sheet 5 from coming off from the roller 4 during work. Hooking fittings 43 are provided on both ends of the shaft 41, so that the shaft 41 is hooked on the arch pipe 2.

FIG. 3 shows a state in which one of the methods of the present invention is actually carried out by using the roller 4 shown in FIG. 2, and the valley portion of the multi-story house is formed. The metal fittings 43 of the roller 4 are hung on the arch pipes 2 and 2. The latching metal 43 is configured such that the roller 4 is located at a position projecting outwardly from the bolt / nut or the like at a connecting portion with the skeleton portion of the arch pipe 2. Rolled plastic sheet 5 is this roller 4
When it is pulled up to the position, the whole point is pulled up along the valley of the roof with this as a turning point. Therefore, some intermediate rollers 6 are provided as an auxiliary member for facilitating the movement of the roll-shaped plastic sheet 5 at appropriate places in the roof valley. Unlike the roller 4, the intermediate roller 6 does not have to project outside the position of the arch pipe 2 and thus is positioned directly above the arch pipe 2, but may have the same structure as the roller 4.

FIG. 4 shows a state in which another one of the methods of the present invention is actually carried out. When pulling up the plastic sheet to the lower arch pipe 21 of the upper and lower two-layer house, the upper arch pipe is pulled up. At the top position of 20, the hook 43 of the roller 4 is hung.
The plastic sheet is pulled up between the upper arch pipe 20 and the roller 4.

Although the method of pulling up the plastic sheet has been described so far, the method of the present invention also includes pulling down the plastic sheet from the roof to the ground by the opposite method.

[0020]

As described in detail above, according to the method of the present invention, in a greenhouse for greenhouse cultivation, a skeleton part formed by a plurality of rows of arch pipes is covered with a plastic sheet to form a roof portion. In the valley formed by the installed arch pipe and the arch pipe in the row adjacent to this,
A roller that straddles these is disposed, and a roll-shaped plastic sheet on the ground is slid on the roller and pulled up to be placed on the valley portion of the roof, and then the plastic sheet is unfolded and stretched on the roof. Alternatively, in a house cultivation house in which a double roof portion is formed by covering a skeleton formed by continuously connecting arch pipes in two steps, a plastic sheet to the lower arch pipe. The coating is performed by suspending the roller support so that the roller main body comes near the top position of the upper arch pipe and at a position slightly higher than the top position of the lower arch pipe. -Shaped plastic sheet is slid on the roller and pulled up to be placed near the top position of the lower arch pipe, and then the plus Expand Kkushito a plastic sheet Zhang 設方 method for greenhouse cultivation, characterized in that the stretched on the roof, a very sophisticated invention having various effects such as described below. Since the roller is installed at the bending point, less force is required when pulling up or down. Since the roller is hung on the valley part of the roof or the seat is pulled up and down by hanging it on the upper arch pipe, it is possible to avoid the members such as bolts and nuts at the connection points of the pipes, and work can be done. The risk of sheet breakage is reduced. The equipment required for carrying out the method of the invention is only a few rollers, so that the cost is low.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a vinyl house for carrying out the method of the present invention.

FIG. 2 is a perspective view showing an example of a roller used in the present invention.

FIG. 3 is a partial side view showing a state in which one of the methods of the present invention is being carried out.

FIG. 4 is a front view showing a state in which another one of the methods of the present invention is carried out.

[Explanation of symbols]

 1 pillar 2 arch pipe 20 upper arch pipe 21 lower arch pipe 3 horizontal pipe 4 roller 41 shaft 42 collar 43 latch 5 plastic sheet 6 intermediate roller

Claims (4)

[Claims] 1. A greenhouse cultivation house in which a roof part is formed by covering a plastic sheet on a skeleton part formed by arranging a plurality of arch pipes in a row, and connecting the arch pipes and rows adjacent to the arch pipes. A roller that straddles these is arranged in the valley formed by the arch pipe, and a roll-shaped plastic sheet on the ground is slid on the roller and pulled up to be placed on the roof valley, and then the plastic sheet is expanded. A method for tensioning a plastic sheet for greenhouse cultivation, which comprises stretching the roof on the roof. 2. The roller comprises a shaft and a cylindrical body with a flange that is rotatable with respect to the shaft, and the shaft comprises:
2. The cylindrical body with a collar is inserted so as to project from both ends, and a latching member for latching the projecting portion is fixed to these so as to straddle the valley portion of the arch pipe. How to stretch plastic sheet for greenhouse cultivation. 3. A greenhouse for greenhouse cultivation, wherein a double roof portion is formed by coating a plastic sheet on the upper and lower parts of a skeleton formed by continuously connecting arch pipes in two steps, and a plastic for the lower arch pipe. First, cover the seat near the top of the upper arch pipe,
Suspend the roller support so that the roller main body is located near the top of the lower arch pipe or at a position slightly higher than that, and pull up the rolled plastic sheet on the ground by sliding on the roller. A method for tensioning a plastic sheet for greenhouse cultivation, which comprises placing the plastic sheet near the top position of the lower arch pipe, and then expanding the plastic sheet and stretching the plastic sheet on the roof. 4. The roller comprises a shaft and a cylindrical body with a flange that is rotatable with respect to the shaft, and the shaft comprises:
4. The greenhouse cultivation according to claim 3, wherein the flanged cylindrical body is inserted so as to project from both ends, and a locking member for locking the protruding portion is suspended and fixed at the top position of the arch pipe. How to stretch plastic sheet.