Roof of a multi-span pipe greenhouse for horticulture

Abstract

Provided is a roof of a multi-span pipe greenhouse for horticulture that maximally utilizes the strength of the covering material and significantly reduces the number of roof components. 【Solution means】In a multi-span pipe greenhouse for horticulture, the roof arch 6a is formed into a single bent shape, or a bent shape composed of two or more connected such that no arch pipe rotation phenomenon occurs and it does not come off. The lower parts on both sides thereof are fixed to the girders 2a, 2b located on the columns on both sides, the upper part of the roof arch is fixed with a ridge member, and the roof arches attached in the depth direction are similarly fixed at regular intervals. Further, pipe cross members 7a to 7d are arranged on a line connecting the upper part of the roof arch and the lower parts on both sides of any one of the roof arches in the depth direction.

Description

Technical Field

[0001] The present invention relates to the roof of a multi-span pipe greenhouse for horticulture.

Background Art

[0002] The roof structure of a multi-span pipe greenhouse for horticulture is formed by bending small-diameter pipes into circular arches, passing two of them from both sides, inserting the upper center part into an upper joint, and combining them. These arched structures are arranged continuously at regular intervals in the depth direction. For these arches, main house pipes are arranged at parallel intervals in the depth direction, and all intersections of the arches and the main house are fixed with clamps to form the roof structure. In addition, like in general architecture, rafters are arranged in the depth direction at large intervals with a gable, and multiple rows of main houses are passed in the depth direction for the gables. Further, on top of that, ground splitting materials are arranged in the roof flow direction. To increase rigidity, braces are arranged on the diagonal lines between the gables and at the intersections of the ridge and the lower girders, and the roof rigidity is formed by stretching in the direction of pulling both sides with these braces.

[0003] Patent Document 1 is not a roof structure but a three-layer cross pipe joint. It is a joint where the arches intersect at the upper part on the X and are fastened together with the ridge members. The truss structure formed by this joint is only formed in the ridge direction and is strong in the ridge direction, but it has a free shape from the side direction and the vertical direction, which is different from the present invention.

[0004] Patent Document 2 is not a roof structure but a ceiling joint for large-diameter pipes. It is an invention for easily connecting large-diameter pipes as ceiling joints in a pipe greenhouse. All of its installation methods utilize friction and are connection methods that do not achieve the same connection force as the original pipes using through bolts or the like, which is different from the connection method in the present invention.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] Due to the soaring prices of materials, the price of buildings has been continuously rising, so there is an urgent need to reduce costs. However, if the conventional method is maintained, widening the interval between members will slightly reduce the number of members, but the effect is small. Also, for the purpose of cost reduction, if the interval between the roof arches and the main building is widened, when the conventional film is stretched, the pressure-receiving area of the film becomes wider. If the strength of the film is weak, it cannot withstand the pressure of rain and wind, and the film will stretch, making it impossible to widen the interval between the roof arches and the main building. However, in recent years, materials with high strength and high durability have begun to spread as roof covering materials. Therefore, if high-strength and high-durability covering materials are used limitedly, and the strength of the covering materials is fully utilized, the number of roof components can be significantly reduced.

Means for Solving the Problems

[0007] In a multi-span pipe greenhouse for horticulture, the roof arch is formed into a single bent shape, or a bent shape composed of two or more connected so that the arch pipe rotation phenomenon does not occur and it does not come off. The lower parts on both sides are fixed to the girders located on the columns on both sides, the upper part of the roof arch is fixed with a ridge member, and the roof arches attached in the depth direction are also fixed in the same way at regular intervals. Further, a pipe cross member is arranged on the line connecting the upper part of the roof arch and the lower parts on both sides of any one of the roof arches in the depth direction. It is the roof of a multi-span pipe greenhouse for horticulture, characterized by this. The roof arch, combined with the pipe cross member, exerts force with a minimum number of members in all directions, from the windward direction of the wind, from the side direction, from the downward direction from above, and from the upward suction direction. Therefore, it can stand as a roof without a main building, and if the main building material, the arch, and the connecting member of the main building can be reduced, it will lead to a significant cost reduction.

Advantages of the Invention

[0008] When simply inserted into the upper joint of a conventional multi-span pipe greenhouse for horticulture, there is an arch pipe rotation phenomenon. However, by arranging multiple rows of main pipes in parallel in the building direction and fixing all the intersections, the rotation phenomenon of the arch pipe is stopped. As described above, when bending one roof arch or forming it with two roof arches and an upper joint, by making the upper joint a connection that does not come off or rotate, equivalent to bending one pipe, the rotation phenomenon of the roof arch itself disappears, and there is no need to prevent rotation by fixing the main building. Next, regarding the force in the building direction, in a conventional multi-span pipe greenhouse for horticulture, by fixing all the intersections of the arch and the main building, it becomes a planar structure with a certain strength and no bracing is installed. However, when arranging diagonal pipe braces near the attachment parts of the upper part as building members and the lower part as girders between one roof arch and the next roof arch, when the above-mentioned members are assembled into an integral structure, the roof arch, combined with the pipe braces, can respond to all directions, including from the windward side direction, the side direction, the downward direction from above, and the upward suction direction. Since a roof structure can be formed without a main building, a significant cost reduction is possible. Also, with the reduction of roof members, the member shadow decreases, the amount of light required for photosynthesis increases, and an increase in yield can be expected.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Embodiments for Carrying Out the Invention

[0010] The present invention relates to a roof structure among columns, girders, beams, and roofs of a multi-span pipe greenhouse for horticulture. The construction of columns, girders, and beams according to the number of spans is the same as the conventional one. On the girders, roof arch mounting folders are set at the positions where the roof arches are to be mounted from the gable side. After the roof arches are sequentially mounted at regular intervals in the depth direction with respect to the folders, the central roof arch upper purlin is mounted and fixed at the same interval as the mounting interval of the roof arches. Next, the cross braces are mounted on the line connecting the upper center of the roof arch, the point near the purlin fixing fitting, the lower part of the next roof arch, and the vicinity of the roof arch mounting folder set on the girder material. Symmetrically, by mounting cross braces on the line connecting the upper center of the next roof arch, the point near the purlin fixing fitting, the lower part of the first roof arch, and the vicinity of the roof arch mounting folder set on the girder material, it is combined with the above-mentioned cross braces to form two diagonal mountings. Furthermore, two diagonal cross braces are also mounted on the surface of the cross braces facing the purlin, and a total of four are mounted, so that as a roof, it can be structured to correspond to all directions, such as the depth direction from the front and back, the side direction from the right and left, the downward direction from above, and the upward suction direction from above. Furthermore, since the roof arches are continuously arranged and connected on the girders and corresponding purlins in the depth direction, the combination of two roof arches and four cross braces as a set will be installed only at the necessary locations in the depth direction of the roof in terms of structural calculation.

Embodiment

[0011] An embodiment will be described below with reference to the attached drawings. In the multi-span pipe greenhouse for horticulture, 1 is a column which is a normal house member, 2 is a purlin which is equipped with a 5-roof arch attachment folder, and 3 is a beam which is a normal house member. 4 is a ridge member which is equipped with a 4b roof arch attachment fitting. 6a is a roof arch and 6b is the next roof arch. 7a is a cross brace pipe 1 which is attached to the lower part of the 6b roof arch from the 4c attachment bolt of the 4b at the upper center of the 6a roof arch. It is installed near the 2a purlin-side roof arch attachment folder. 7b is also the same cross brace pipe 2 as above, which is attached diagonally to the 7a cross brace pipe from the upper center of the 6b roof. 7c is also a cross brace pipe 3 and 7d is also a cross brace pipe 4, which are attached from the upper centers of the 6a roof arch and the 6b roof arch towards the 2b next purlin so as to be targeted for the 4a ridge member.

[0012] As shown in Fig. 2, the roof structure composed of the combination of the purlin members 2a and 2b, the roof arches 6a and 6b, and the cross brace pipes 7a, 7d, 7c, and 7d does not have to be arranged over the entire roof, and can be arranged appropriately in terms of structural calculation.

[0013] In addition, the cross brace pipes 7a, 7d, 7c, and 7d can be installed dispersedly as a snow accumulation countermeasure for adjacent roof arches.

[0014] When the roof is composed of two roof arches and an upper joint, in order to connect the upper joint in the same way as a single bend so that it does not come off or rotate, through bolts can be used for the connection between the roof arch and the upper joint, or the pipe shape can be made into an oval or square shape, so that it will not come off or rotate, and a connection equivalent to a single bend can be achieved.

Explanation of Reference Numerals

[0015] 1 Column 2a Purlin 2b Next Purlin 3 Beam 4a Ridge Member 4b Ridge Attachment Fitting 4c Attachment Bolt of Ridge Attachment Fitting 5 Roof Arch Attachment Folder 6a Roof arch 6b Next roof arch 7a Cross-bracing pipe 1 7b Cross-bracing pipe 2 7c Cross-bracing pipe 3 7d Cross-bracing pipe 4

Claims

[Claim 1] In a roof of a multi-unit horticultural pipe house, the roof arch is made of a single bent shape, or made up of two or more connected pieces so that the arch pipe rotation phenomenon does not occur and the arch pipe does not come loose, and both lower sides of the roof arch are fixed to beams located on the pillars on both sides, the upper part of the roof arch is fixed to a ridge material, and the roof arches attached in the depth direction are also fixed in the same way at regular intervals, and further, pipe braces are arranged on the line connecting the upper part of the roof arch and the lower sides of either of the roof arches in the depth direction.

Images