JPH0451831A - Sheet-opening and closing device at ridge of plant-cultivating house - Google Patents

Abstract

PURPOSE:To control the flow of air in an agricultural house and ideally perform the control of temperature in the house by attaching a string to a fixed rotational shaft and a transfer rotational shaft in a tangential type and further fixing one end of a soft thin filmy on the transfer rotation shaft. CONSTITUTION:The left half of a house is covered with a sheet 8 and the right half is covered with a sheet 10. At the position of a shaft Y the left end U of the sheet 10 is placed the sheet 8 to close the ridge of the house with the sheets 8 and 10. When the shaft Y is rotated counter clock wise toward the arrow, the shaft Y is left transferred and the sheet 8 and the string 4 and wound up and the string 4 is simultaneously unwound from the shaft X. The sheet on the ridge is opened only a distance of the counter clock wise rotation of the shaft Y, and when the shaft Y is transferred to a position of Z, the sheet of the ridge is opened for only a distance of U-V. In order to close the sheets of the ridge the shaft X is rotated clock wise when the string is an outer tangential type or the shaft X is rotated counter clock wise when the shaft X is an inner tangential type, thereby pulling the string of the shaft Z to rotate clock wise and pull the shaft Z in the direction. At the position of the shaft Y the sheet of the ridge is perfectly closed. The degree of closing or opening of the sheet can be controlled by suitably selecting the position of the shaft Z.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention opens and closes the sheet in the ridge of a plant cultivation house over the entire length of the ridge, controls the flow of air inside the house, and adjusts the temperature inside the house. This is ideal for adjustment.

(Prior art) This will be explained with reference to FIGS. 1 to 3. Temperature inside the house 1llII
When the temperature is high, WJ is the bottom part of the house, that is, (AB-B'A') part and the corresponding part (CD-D'') on the opposite side in Fig. 1.
G'[D',G' are not shown in the figure])'s soft thin film sheet (hereinafter referred to as the sheet) is rolled up around the shafts BB' and DD' to release the hem, or as shown in Figure 2. Lower back i.e. (
EF-F″E') part and the corresponding part on the opposite side (GH-H″G')
[H', G' are not shown in the figure) Sheet is attached to axis FF',
It is rolled up on the axis HH' to release the waist and allow air to flow parallel to the ground surface to lower the temperature, and when the temperature is low, the hem or waist is closed to prevent the temperature from dropping. A, B, E, F in Figure 3
correspond to Figures 1 and 2, and C'' and G' indicate the closed state of the right side of the house, respectively.The air inside the house is hotter at the top, but when the temperature is high, the seats at the hem and waist are closed. Even if the building is opened, the high-temperature air in the ridge remains trapped without being ventilated.

In order to ventilate the high temperature air in the ridge, a skylight 1 is provided in the ridge and opened as shown in Figures 1 and 2 (the position indicated by the solid line).

However, due to the high cost of equipment, skylights can only be installed at intervals, or are often left uninstalled.

FIG. 4 is a detailed view of a prior art winding device, in which the winding operation is carried out using a rotary handle with a square recess that fits exactly into the square shaft 2 at the end of the shaft.

When the shaft is in position B or F, the arch frame 3 has a steep slope, so when the winding force is loosened, the shaft and the rolled sheet tend to descend due to their own weight. Use "stop" to prevent reversal.

(Problem that the invention attempts to solve) The conventional technology has the following drawbacks.

(b) Even if there is no sunlight during the day, the temperature inside the greenhouse reaches over 30°C, making it difficult to maintain the appropriate temperature for plant growth.

(0) Even if a skylight is installed, there is considerable "unevenness" in the temperature inside the house.

(8) Houses are vulnerable to wind, and the entire frame may be blown away in strong winds.

(Means to solve the problem) It would be ideal if the sheet could be rolled up and opened and rolled back and closed over the entire length of the house, such as at the hem and waist, in place of the skylight of the house, but the opening and closing mechanism is This cannot be achieved due to the following reasons.

In Figure 4, when the shaft is further wound up from the F position and reaches the position (■), the slope of the arch frame 3 becomes gentler, so the frictional resistance becomes greater than the descending blade, so the downward tendency decreases, and the Then, even if the rotational force is relaxed, the shaft will not reverse and descend. Next, when you try to reverse the rotation using the rotating handle, the shaft slips inside the sheet that is being wound up, and the sheet does not rewind.

Therefore, I came up with the following seat opening/closing device for the house ridge.

This will be explained with reference to FIG. Fixed rotation axis X and moving rotation axis Y
A small hole is made along the diameter of the cross section, with the relative position slightly shifted on both axes of the cross section. Both ends of a strong string 4 of appropriate length are passed through each small hole, and knots 5 and 6 are made by tying both ends of the string into a knot shape so that it does not slip out of the hole. When node 6 is above node 5 in the position shown in the figure, turn axis Y about half a turn to the left (arrow) direction when looking from below, wrap string 4 so that it is below node 6, and then Rotate X to the right (arrow) direction and wrap the string 4 many times so that it goes above node 5, keeping the part of the string that connects axis X and axis Y taut. When node 6 is below node 5, the string is wound around both shafts so that both windings are to the right.This type of winding of the string is called the circumtangent type. *Figure 6). The winding of the string is J!, including when node 6 is above node 5 and when it is below node 5! It is conceivable that the string be wrapped as shown in Figure 5 (in such cases, the direction of the string wrapping will be opposite on both axes). This way of wrapping the string is called the inscribed line type. Next, insert the shaft X into the bearing 7, pull up one side of the sheet 8 through the lower left of the shaft Y, and fix it to the shaft Y with the stopper 9 (1!
Figure 7).

(Function) In FIGS. 6 and 7, the sheet 8 covers the left half of the house, and the sheet 10 covers the right half. At the position of the axis Y, the left end U of the seat 10 is below the seat 8, and the seat at the ridge is in a closed state. Figures 6 and 7
In the figure, when the axis Y is rotated to the left in the direction of the arrow, the axis Y rolls to the left and simultaneously winds up the sheet 8 and the string 4.
At the same time, the string 4 on the axis X is unwound. The seat in the ridge is axis Y
is opened by the distance rolled to the left, and when the shaft rolls to the Z position, the ridge seat is opened by the width of U-V (Fig. 3, Fig. 6, Fig. 7, Fig. 7). Figure 8). To close the ridge sheet, rotate the axis X to the right if it is a circumscribed type (
(in the direction of the arrow in Fig. 6), or in the case of the inscribed line type, by rotating to the left (in the direction of the arrow in Fig. 5), the string of shaft 2 is pulled, and the shaft 2
Rotate to the right and pull. At the position of axis Y, the ridge seat is completely closed. The degree of opening and closing of the seat can be adjusted by appropriately selecting the position of the shaft 2.

(Effects of the Invention) Unlike conventional skylights in which the ridge is partially opened, the sheet can be opened over the entire length of the ridge, resulting in complete ventilation. Since you can freely select the degree of opening and closing, you can maintain the optimum temperature for plant growth.

It is safe even in strong winds. When it rains, the ridge can be opened to let in rainwater.

(Example) Although the total length of a house is usually 50 m or more, the fixed rotation axis X and the movable rotation axis Y are provided over the entire length of the house. The opening/closing device shown in Figure 7 is installed at both ends of the house ridge and at several equally spaced locations in between.

The rectangular shaft portion 2 at the end of the shaft may be provided on one side of the shaft.

[Brief explanation of the drawing]

Figures 1 and 2 are panoramic views of the plant cultivation house, Figure 3 is an enlarged view of the house entrance, Figure 4 is an illustration of winding up on the arch frame, Figure 6 is a front view of the ridge opening/closing device, 7 and 8 are plan views thereof, and FIG. 5 is a supplementary explanatory view of FIG. 6. 1... Skylight, 2... Square shaft part at the shaft end,
3... Arch frame, 4... Winding cord, 5.
6... String node, 7... Bearing, 8.10
... Seat, 9... Seat stopper, 1
1... House depth straight members A, A', B, B'
,・・・・・・・・・・・・・・・・・・,G,G',
Each point H and H' indicates the position of the depth straight member U... Left end of the right sheet, ■... Axis 2
Tangential positions x, y, z on the roof surface of the house...The position of the rotation axis shading represents the sheet.

Claims (1)

[Claims] A string (4) is attached to the fixed rotation axis (X) and the movable rotation axis (Y) in a circumscribed line type or an inscribed line type, and a soft thin film sheet (8
) is a seat opening/closing device for the ridge of a plant cultivation house, with one side fixed to the moving rotation axis (Y).