JP2021090360A - Spreading method of roof film sheet, operation tool for cultivation house roof, cultivation house of long span arched roof - Google Patents

Abstract

To provide a cultivation house in which sunlight can be effectively utilized by decreasing number of roof rafters.SOLUTION: A spreading method of a film sheet on a roof of a cultivation house in which an interval S of roof rafters is 1,000 mm to 3,000 mm repeatedly performs in this order the steps of: fixing a film sheet to a roof rafter 21 to which the film sheet is fixed at first; temporarily fixing the film sheet in a free state to a temporary fixing member 31 by extending the film sheet in a direction of a roof rafter to which the film sheet is fixed next; tensioning the film sheet by applying tension to the temporary fixing member; and fixing the film sheet to a next roof rafter 22 in a tensioned state by use of a presser material 32.SELECTED DRAWING: Figure 1

Description

The present invention is a technique relating to a cultivation house. In particular, it relates to a technique for expanding a roof film sheet of a cultivation house having a long-span roof arch.

Cultivation houses are attracting attention and are widespread as institutional agriculture.
In particular, agriculture is required to solve the structural problems of Japanese agriculture, revitalize agriculture, and strengthen its competitiveness. It is at a turning point such as Agricultural Commerce and Industry Federation, Sixth Industrialization, TPP, and entry of companies. As the industrialization of agriculture from the market, it is required to satisfy the factors such as stable quality, stable shipment quantity, and year-round supply. From the perspective of producing agricultural products and supplying them, if these three factors can be satisfied, stable sales destinations (markets) can be secured, and management can be stabilized. It can be converted to and can be expected to grow as an industry.
House cultivation is effective as a means of planned cultivation and stable shipment by mitigating the effects of climate change and controlling the cultivation environment. It is one of the technically effective means to solve agricultural problems.

As an example of a house, a house for cultivation (a house for cultivation in which a large number of pipe frames in which round pipes are bent into an arch shape are arranged in a row at intervals of about 60 to 100 cm, and a skeleton combining horizontal and diagonal materials is covered with a film sheet. (See FIG. 16).
Further, the applicant has already provided patent documents 1 (Japanese Patent No. 6247046), Patent Document 2 (Japanese Patent Laid-Open No. 2018-174799), and patents for a large durable house using an octagonal pipe (see FIG. 17). It is proposed in Document 3 (Japanese Unexamined Patent Publication No. 2016-16803).

Japanese Patent No. 6247046 JP-A-2018-174799 Japanese Unexamined Patent Publication No. 2016-16803

An object of the present invention is to develop a cultivation house capable of increasing the available sunlight. In particular, reducing the number of roof rafters can increase the amount of sunlight entering the house, but in the past, if the intervals between roof rafters were widened, roof work would become difficult, film sheet extension work would not be possible, and trials would be possible. When the film sheets were stretched on the roof rafters at wide intervals, there was a problem that the tension was insufficient, the wind fluttered, and the edges of the film sheet retainers rubbed and torn.

(1) A method for spreading a roof film sheet of a cultivation house in which the distance between roof rafters is 1000 mm to 3000 mm.
The process of fixing the film sheet to the roof rafters that starts first,
Next, the process of extending the film sheet in the direction of the roof rafters to be fixed and temporarily fixing the free film sheet to the temporary fixing member.
A tensioning process in which tension is applied to the temporary fixing member to tension the film sheet.
Fixing process to fix the film sheet to the next roof rafter with a holding material in a tense state,
A method of spreading a roof film sheet, which is characterized by repeating in the order of.
(2) The method for stretching a roof film sheet according to (1), wherein the film sheet is a fluorine film sheet or a PO film sheet.
(3) The method for expanding a roof film sheet according to (1) or (2), wherein the roof rafter is an octagonal pipe arch material and the holding material is a holding material circumscribing three sides of the octagonal pipe arch material.
(4) The temporary fixing process is
The temporary fixing member has a temporary fixing portion for fixing the sheet supported by the temporary receiving octagonal pipe arch material, and the temporary fixing portion is composed of a grooved sheet receiving member and a corrugated wire rod, and the film sheet is used as a groove. It is a process of inserting and inserting and fixing the corrugated wire in the groove.
The tensioning process is characterized in that the wire material is attached to the temporary receiving octagonal pipe arch material, the wire material is attached to the member of the cultivation house via the tension adjusting member, and the wire material is tightened and tensioned (1) to (3). The method for expanding the roof film sheet described in any of the above.
(5) A jig for roof work of a cultivation house having a ladder part and a scaffolding part for work.
The work scaffolding portion is at least the upper part of the ladder portion and is attached to the lower surface side of the vertical frame, the length of the work scaffolding member is equal to or greater than the roof rafter spacing S, and has an upper warped end portion. And
The ladder section is a jig for roof work of a cultivation house, which is characterized by having a grounding member having a width larger than the interval between vertical frames.
(6) The roof of a cultivation house in which a film sheet is spread on the roof rafters of the roof arranged at intervals S.
The roof rafters are octagonal pipe arch materials, and the distance S between the roof rafters is 1000 mm to 3000 mm.
The film sheet is a fluorine film sheet or a PO film sheet,
A cultivation house characterized in that a film sheet is covered on an octagonal pipe arch material and is fixed and stretched by a holding material having three pieces circumscribing the three sides of the octagonal pipe arch material. Long span roof.
(7) A plurality of pillars erected in parallel at intervals larger than the roof rafters of the roof, an eaves frame with beams attached between the columns, and an upper part of the eaves frame (6). A cultivation house with a long-span roof, characterized in that it is fitted with the long-span roof described in.

1. 1. The present invention has realized a cultivation house in which the roof rafter spacing is widened to 1000 to 3000 mm by developing a roof film sheet extension method for the cultivation house, and has been able to increase the amount of sunlight entering the cultivation house. .. In particular, for the arrangement of long-span roof rafters, by using octagonal pipe arch material as the roof rafters, stable roof film sheet extension and durable cultivation house were realized.
2. We have developed a roof work jig with a work scaffolding section at the top of the ladder that is longer than the space between the roof rafters, making it easier to work between adjacent roof rafters and moving to adjacent roof rafters one after another. Workability has improved because it can be done. In the past, it was possible to work while standing on the roof rafters and move across the adjacent roof rafters because the spacing (about 600 mm) was narrow, but the problem caused by the widening spacing was the development of the above roof work jig. Could be solved by.
3. 3. In the present invention, the film sheet on the roof rafter side to be stretched next is temporarily fixed to the temporary fixing member and a tension force is applied to give a uniform and strong tension force to the entire width of the film sheet, and the roof rafters are in that state. By fixing the film sheet from above with a pressing material, the film sheet that maintained strong tension was fixed between the roof rafters, and the highly durable film sheet that was suppressed from fluttering due to the wind was stretched.
In the past, the film sheet was pulled by hand and tensioned to fix the film sheet to the roof rafters, but when the distance between the roof rafters is 1000 mm or more, the tension of the film sheet becomes loose, and the film sheet vibrates due to wind pressure, causing the film sheet to vibrate. There was a problem that the durability of the film sheet was lowered due to rubbing against the edge of the holding material and tearing, and it was not possible to widen the space between the roof rafters. Since the fluorine sheet lasts for about 10 years, improvement of wear resistance is an important factor.
A PO film sheet or a fluorine film sheet is suitable as the film sheet material to be expanded. When using PO film sheets, the spacing between roof rafters to which appropriate tension can be applied is less than 1500 mm, preferably 1400 mm or less. With the fluorine sheet, the distance between the roof rafters can be expanded up to 3000 mm, preferably 2500 mm or less.
4. A roof with a film sheet spread over a roof frame in which octagonal pipe arches are arranged over a long span of 1000 mm or more was realized, and a cultivation house equipped with a long-span roof with the roof attached to the eaves frame structure was realized. Regular octagonal pipe materials and modified octagonal pipe materials are suitable as roof arch materials that can withstand long spans.

Long-span roof film extension schematic The figure which shows the example of the octagonal pipe and the sheet holding material Diagram showing seat tension work The figure which shows the example of the film sheet temporary fixing means Long span arch roof cultivation house side view Long span arch roof cultivation house plan view Long span arch roof cultivation house cross section Diagram showing the wife side of a greenhouse for cultivation Diagram showing a jig for roof work Schematic diagram of roof work jig usage The figure which shows the tension load state The figure which shows the sheet extension state and the laying state of the roof work jig Holding state diagram Diagram showing the whole view of a long-span roof cultivation house Diagram showing the internal state of a long-span roof cultivation house Example of arch frame of pipe frame house Cross-sectional view of a cultivation house using the octagonal pipe material shown in Patent Document 2.

The present invention is a method of spreading a film sheet in an appropriate tension state at a roof rafter interval of 1000 to 3000 mm, which is a long span that cannot be realized in the past, and is a cultivation house provided with a long span roof rafter. A suitable roof work jig. It is an invention to realize a cultivation house capable of increasing the amount of light entering the cultivation house and promoting photosynthesis of plants by applying an appropriate tension to the intervals of long-span roof rafters and spreading the film. An octagonal pipe arch material is suitable as a roofing timber that exhibits strength that allows the film sheet to be stretched over a long span. By using the octagonal pipe material previously proposed by the applicant, a long span using a pipe arch is used. It is an invention that realized a roof and realized a cultivation house with a long-span arch roof mounted on the frame under the eaves.
We developed a tension jig that temporarily applies tension to the film sheet to fix the film sheet in an appropriate tension state, and developed a roof work jig suitable for long-span roof structures on the roof. It is also an invention with improved workability.
As the film sheet material, a fluorine film sheet and a PO film sheet are suitable because they can withstand a strong spreading tension. The PO film sheet is suitable for roof rafter spacing of 1000 to 1500 mm (particularly 1400 mm or less), and the fluorine film sheet is suitable for roof rafter spacing of 1000 to 3000 mm (particularly 2500 mm or less).

The step of spreading the film sheet on the roof of the cultivation house where the distance between the roof rafters of the present invention is 1000 to 3000 mm is performed by the following step.
First process: The process of fixing the film sheet to the roof rafters that starts first,
Second step: A step of extending the film sheet in the direction of the roof rafter to be fixed and temporarily fixing the free film sheet 1 to the temporary fixing member.
Third step: A tensioning step in which tension is applied to the temporary fixing member to tension the film sheet.
Fourth step: Fixing step of fixing the film sheet to the next roof rafter with a pressing material in a tense state,
Repeating step: The roof film sheet is spread by repeating the second to fourth steps in order.

An embodiment of the film sheet stretching step will be described with reference to FIG.
FIG. 1 schematically shows a method of spreading a film sheet on roof rafters arranged in a long span.
The illustrated example is an example in which the film sheet is fixed from the roof rafter on the right end and then stretched on the roof rafter on the left side in order.
As the first step, the film sheet 1 is sandwiched between the holding members 32 and fixed to the roof rafters 21 that are first started by driving the screws 36.
As a second step, the film sheet 1 is then extended toward the roof rafter 22 to be fixed next on the left side, and the free portion of the extended film sheet is temporarily fixed to the temporary fixing member 31.
As a third step, a wire material 33 provided between the temporary receiving material 31b supporting the temporary fixing member 31 and the roof rafter 2 on the left side is used to tension the film sheet 1 in a free state. Give power.
As the fourth step, the film sheet 1 in a tense state is sandwiched between the roof rafters 22 and the pressing material 32 which are adjacent to the left side of the roof rafters 21 which are first started and are fixed next, and the screws 36 are driven in and fixed.
In the illustrated example, the film sheet 1 in a tense state can also be fixed to the third unfixed roof rafter 23 by sandwiching it with the pressing member 32. In this step, the film sheet can be fixed to some roof rafters and is not limited to the illustrated example.
Next, the temporary fixing is released, the film sheet is stretched to the left, and the temporary fixing step of the second step is repeated in order to advance the extension of the film sheet.
In the illustrated example, an example of expanding to the left is shown, but it may be to the right, or it may be advanced from the middle portion to both sides.

By developing this stretching method, an appropriate tension can be applied to the entire roof rafter span of 1000 mm or more, and the film sheet can be temporarily fixed and fixed to the roof rafter in a tense state. In particular, with a fluorine film sheet to which a strong tension force can be applied, it has become possible to realize a roof rafter span of 1500 mm or more, particularly 2000 mm or more. And the roof rafters made of octagonal pipes can support the large load brought about by this long span.

FIG. 2 shows an example of a sheet holding material when an octagonal pipe is used for a roof rafter. (A) shows a state in which the pressing member 32 is fixed to the octagonal pipe arch member 2a with screws 36. In this example, the octagonal pipe arch material uses 42.7 mm.
(B) shows the pressing material 32. The pressing member 32 has an "eight" shape circumscribing the three sides of the octagonal pipe. The central piece 32c is provided with a thick screw fixing portion 32d, and the pressing pieces 32a are provided so as to be bent downward to the left and right of the central piece 32c. The tip of the holding piece 32a is formed on an outwardly curved curved end 32b. In this example, the holding piece 32a is formed longer than the side of the octagonal pipe. Since vibration is generated in the stretched film sheet due to wind, etc., by lengthening the holding piece, the holding piece is made longer than the side of the octagonal pipe while absorbing the vibration while applying tension to reduce fluttering. As a result, rubbing between the corners of the octagonal pipe and the film sheet is prevented, and by forming a curved end portion, rubbing against the end portion of the holding piece is prevented, and rubbing of the film sheet is prevented.
It is desirable to bend the corner portion (holding material end portion 32e) of the end portion in the longitudinal direction of the pressing material 32 outward so as not to damage the film sheet (see FIG. 13B).
FIG. 2C shows an example in which the deformed octagonal pipe material 2b and the pressing material 32 are combined.

FIG. 3 shows a state of the work of tensioning the film sheet.
(A) shows a state in which the temporary fixing portion 3 is provided by temporarily fixing the free-state portion of the stretched film sheet in the second step to the temporary fixing member. The left side of the free film sheet 1a is temporarily fixed along the arched octagonal pipe.
(B) shows the temporarily fixed portion of the film sheet 1a in an enlarged manner. In this example, the temporary fixing member 31 is composed of a grooved seat receiving member 37 and a temporary receiving octagonal pipe arch member 31c that supports the grooved seat receiving member 37. The film sheet 1a is inserted into the groove and fixed in the groove with a corrugated wire rod.
(C) shows a state in which the temporarily fixed portion shown in (b) is viewed from below. A state in which the seat receiving member 37 is supported by the temporary receiving octagonal pipe arch material 31c is shown, and the tip of the wire material 33 is wound around the temporary receiving octagonal pipe arch material 31c. This wire is tightened to give tension to the film sheet 1a.
(D) shows the rear end side of the wire material 33. A turnbuckle 34 is provided at the rear end of the wire material 33, and the other end of the turnbuckle 34 is attached to a member of the house. The turnbuckle 34 is adjusted to pull the wire material 33 and tension the film sheet 1a. The wire material 33 can be provided at two locations, one on the ridge side and the other on the eaves side, and can be adjusted so that a constant tension force is applied to the film sheet as a whole. By interposing a tension measuring device (spring scale, etc.), the tension force can be easily adjusted. In addition to the turnbuckle, means for adjusting the tension (winding reel, etc.) can also be used.

FIG. 4 shows a state in which a temporary receiving portion of a film sheet is formed by using the grooved sheet receiving member. (A) shows a state in which the film sheet 1a is fixed in the groove 37a of the sheet receiving member 37, and (b) shows a state in which the sheet receiving member is supported by the temporary receiving material 31b.
The sheet receiving member 37 is a long material provided with a groove 37a having a widened back side. The film sheet 1a is inserted into the groove 37a, and the elastic corrugated wire rod bent in a trapezoidal shape is pushed into the groove to fix the film sheet 1a in the groove. As a result, the film sheet 1a can be temporarily fixed over the entire length of the arch from the ridge to the eaves.
(B) shows a cross section. The sheet receiving member 37 is formed by bending a thin plate to form a trapezoidal groove on the inside, and a groove widened on the back side. The film sheet 1a inserted from the open side of the groove 37a is fixed by the corrugated wire rod 38. Since the sheet receiving member 37 shown in this example is made of a thin plate, the temporary receiving material 31b is applied to the back surface side of the sheet receiving member 37 and fixed with screws or the like. A wire attachment ring may be provided on the temporary receiving material 31b. The sheet receiving member 37 can also be welded to the temporary receiving material 31b.
In the example shown in FIG. 3, an octagonal piper material similar to the roof arch material is used as the temporary receiving material 31b.

Figures 11 to 15 show the state of the cultivation house in which the film sheet is adjusted.
FIG. 11 shows the state of the roof of the cultivation house in a state where the film sheet before fixing is tensioned. In (a), the film sheet is already fixed to the arch material on the right gable side, and the film sheet on the left side is temporarily fixed to give tension, and the second and third arch materials are not pressed. is there. (B) shows that the film sheet in the prepared state of (a) is temporarily fixed.
FIG. 12 shows a state of a roof of a cultivation house in which a pressing material 32 is applied to an arch material with a film sheet sandwiched and fixed with screws 36, following FIG. It is also shown that the roof work jig 200 used for the film sheet extension is built on the gutter 43. In FIG. 12, it can be seen that the hem of the film sheet 1 is fixed to the inside of the gutter 43. For the hem of the film sheet, for example, the grooved sheet receiving member shown in FIG. 4 is attached to the gutter, and the hem of the film sheet is inserted and fixed in the groove.
FIG. 13 shows a pressing state in which the film sheet 1 is fixed by the pressing member 32. (A) shows a state in which the holding material 32 is fixed by screws 36 along the roof arch, and (b) shows a state in which the holding material end portion 32e of the holding material 32 is bent outward. The end portion 32e of the pressing material is bent to prevent it from biting into the film sheet and being damaged. The cross section of the holding portion is the same as in FIG. 2A.
In this way, a panoramic view of the long-span roof cultivation house in which the film sheet 1 is extended is shown in the figure.
In the cultivation house shown in FIG. 14, the octagonal pipe arch material 2a is arranged in a long span of 2000 mm, and the fluorine film sheet 1F is spread. A gutter 43 is provided in the eaves portion, side pillars 54 are provided under the eaves at a pitch of 4000 mm, and side rafters 55 are provided at a pitch of 600 mm. Three girders 45 are provided on the side surface.
FIG. 15 shows the inside of a long-span arched roof cultivation house.

The film sheet materials suitable for providing the roof rafters in the 1000 to 3000 mm span of the present invention are a fluorine film sheet and a PO film sheet.
The PO film sheet is particularly suitable for a span of 1000 to 1500 mm, and the fluorine film sheet is suitable for a span of 1000 to 3000 mm because it can withstand high tension.
The raw material resin of the PO film sheet is a polyolefin resin, which also contains low density polyethylene (LDPE), which is a raw material for agricultural poly, and ethylene vinyl acetate copolymer resin (EVA), which is a raw material for agricultural shavings. .. Agricultural PO film sheets are a new category of film sheets that are specialized so as to give a wide range of quality levels by using polyolefin resin as a raw material resin, blending various additives, and forming a multi-layer structure of the film sheet. .. An agricultural film sheet made of a polyolefin resin and having a plurality of functions such as durability, heat retention, light ray selectivity, antifogging property, and fog resistance. It is used in a wide range of fields as a structural material because it is inexpensive and has excellent mechanical properties.
The fluorine film sheet is a film sheet made of a fluororesin obtained by polymerizing an olefin containing fluorine. Polytetrafluoroethylene (tetrafluoroethylene), polychlorotrifluoroethylene (trifluorinated resin), polyvinylidene fluoride, vinyl fluoride, perfluoroalkoxyfluorine resin, ethylene tetrafluoride / propylene hexafluoride copolymer, ethylene -Teflon tetrafluoroethylene copolymer, ethylene / chlorotrifluoroethylene copolymer.
A fluororesin film sheet in which these fluororesins and other resins are formed in multiple layers has been put into practical use as a film sheet for cultivation. Has excellent durability and translucency.

FIGS. 5 to 8 show an example of a cultivation house provided with a long-span roof.
FIG. 5 is a side view of the cultivation house 100, FIG. 6 is a plan view of the cultivation house 100, a partial plan view of the cultivation house 110 which is a continuous building, and FIG. 7 is a cross-sectional view of the cultivation house 100 and the cultivation house 110 which is a continuous building. A partial cross section of is shown. FIG. 8 shows a cultivation house in which a roof with a long span arch is placed on a frame under the eaves.

The long-span arch roof cultivation house 100 (sometimes referred to as “cultivation house 100”) is provided with arch-shaped roof rafters 25 at an interval (span) of 2000 mm. An octagonal pipe arch material 2a is used as the arch-shaped roof rafters 25. Fluorine film sheet is used for the film sheet to be put on the roof.
From the side view (see FIG. 5), the pillars are provided with side pillars 54 at intervals of 4000 mm. An eaves beam 59 and a gutter 43 are provided at the upper ends of the side pillars 54. Side rafters 55 are provided at intervals of 600 mm from the eaves beam 59 downward. The girders 45 that connect the side rafters 55 are provided in three stages. In the cultivation house 100, the distance between the left and right wives 44 and 44 is 20 m (length 20 m). A film sheet is stretched on the side surface using the side rafters 55. A PO film sheet is used as the side film sheet.

The cultivation house 100 is built in a continuous building to which the cultivation house 110 is connected. In a plan view (see FIG. 6), only a part of the cultivation house 110 is shown, except that the span S1 of the arched roof rafters is 1334 mm and the PO film sheet is used as the spreading material. Since it is the same as 100, it is abbreviated.
The roof of the cultivation house 100 has an arched roof rafter 25 having a span (S) of 2000 mm, and the arched roof rafter 25 of the cultivation house 110 has a span (S1) of 1334. Brace 47 is provided on the gable side of both sides. A skylight 48 is provided in parallel with the ridge 42. A gutter 43 is provided in the eaves, and a gutter 43 is also provided in the connecting portion of the continuous building. The width of the wife side is set to 8 m for the cultivation house 100 and 6 m for the cultivation house 110.
An octagonal pipe arch material 2a is used for the arch-shaped roof rafters 25. The octagonal pipe arch material is extended from the left and right and connected under the ridge to form a roof arch.
The octagonal pipe arch material 2a uses an outer diameter of 42.7 mm.

The cross-sectional structure of the cultivation house 100 (the same applies to the cultivation house 110) is shown in FIG.
The valley pillar 53 and the upper part of the side pillar 54 are connected by a land beam 56 to form a basic structure under the eaves. Steel square lumber is used for the column material and the land beam material (the same applies to the eaves beam 59 shown in FIG. 5).
Arch-shaped roof rafters 25, 25 are extended from the left and right and joined at the ridge via eaves beams provided above the valley pillar 53 and the side pillar 54. As the arch-shaped roof rafters 25, an octagonal pipe arch material 2a is used and connected by an octagonal joint. Supporting materials are provided on the eaves beams above the columns to attach the base of the arched roof rafters. A gutter 43 is provided above the side pillar 54 and the valley pillar 53. A part of the member supporting the arch material may be provided on the side surface of the gutter.
A side rafter 55 is horizontally provided on the outside of the side pillar 54 via the furring strip 58. The side rafter 55 is a function of fixing the film material stretched on the side surface of the cultivation house. In this example, the side rafters 55 are provided with grooves for inserting and fixing the film, and are arranged at intervals of 600 mm.
A skylight 48 is provided on the right side of the building 42. Skylights can be provided on one or both of the left and right sides.

A perspective view in which a long-span arch roof structure is provided on an eaves frame composed of columns and beams is shown in FIG. 8 in a simulated manner. Although this cultivation house is shown in a double ridge, it is shown for explanation and does not conform to the embodiment of the present invention.
The frame under the eaves is provided with side columns 54, 54 on both sides at predetermined intervals. Valley pillars 53 are provided at the same intervals as the side pillars 54 at the joints of the consecutive buildings. The upper parts of the side pillars 54 and the valley pillars 53 are connected by a land beam 56, and the upper parts of the adjacent side pillars 54 and 54 are connected by an eaves beam 59. The upper parts of the adjacent valley columns 53 and 53 are also connected by eaves beams (not shown because they cannot be seen). Although members such as girders passed below the land beam 56 and the eaves beam 59 are omitted, constituent members of the end portion and side girder members (such as the girder member 45 shown in FIG. 5) are provided.
Gutters 43 are provided in the eaves on both sides of the cultivation house and in the valley in the middle.

In the arch structure of the roof, a support member is provided on the eaves beam to support the base of the arch material (arch-shaped roof rafter 25). A part of the support member can be attached to the gutter 43 to increase the stability. The arch material (arch-shaped roof rafter 25) is formed by connecting pipe materials extending from the left and right at a ridge. A large number of the arch materials (arch-shaped roof rafters 25) are arranged at predetermined intervals in the ridge direction, and the tops of the arch materials (arch-shaped roof rafters 25) are connected to the ridge 42. Although not shown, a girder (such as the roof intermediate girder 46 shown in FIG. 6) is often provided in the middle of the arch material (arch-shaped roof rafters 25).
In the present invention, the arrangement interval of the arch material is as long as 1000 to 3000 mm. An octagonal pipe arch material 2a that can withstand a large shearing or bending load is suitable for this long span.
With this configuration, it is possible to provide a cultivation house having an eaves frame composed of columns and beams and a long-span arch roof structure that is not affected by the column span. The applicant has already proposed a cultivation house using an octagonal pipe material. The regular octagonal pipe material is disclosed in Japanese Patent No. 6247046, and the modified octagonal pipe material is disclosed in Japanese Patent Application Laid-Open No. 2018-174799. ing.
For example, in the cultivation house according to the embodiment shown in FIGS. 5 to 7, the arch spans are 2000 mm and 1334 mm. The distance between columns is set to 4000 mm. The cultivation house 100 has a wife surface width of 8 m, and the cultivation house 110 has a wife surface width of 6 m.

Examples of roof work jigs are shown in FIGS. 9 and 10.
We have developed a roof work jig 200 suitable for arched roof work of a cultivation house.
The roof work jig 200 includes a ladder portion 210 provided with a tread rail and a work scaffolding portion 220 provided above the ladder portion 210.
The ladder portion 210 includes two vertically arranged vertical frames 212, a tread 215 passed between the vertical frames 212, and a grounding member 214 provided at the lower end of the vertical frame 212. When the tread 215 is fixed to the surface side of the vertical frame 212, the foot on the tread can be separated from the film sheet, and the risk of scratching the film sheet is reduced.
The vertical frame 212 can be made of straight material or curved material along the roof arch. As the bending material, an octagonal pipe arch material can be used, and since the roof arch and the bending have the same shape, it is suitable. The grounding member 214 is longer than the distance between the two vertical frames 212 to ensure grounding stability.
It is also possible to configure the vertical frame 212 into two upper and lower frames to increase the frame width and increase the stepping width of the crosspiece on which the foot is placed. The upper frame can also be used as a handrail to ensure work stability. An example in which the vertical frame 212 is vertically configured is shown in the roof work jig 200 shown in FIG.
A long work scaffold member 221 is used for the work scaffold portion 220. The length is larger than the span S of the roof arch, which is 2400 mm in this example. A plurality of ladder fixing members 223 are provided on the work scaffolding member 221 at intervals of the vertical frame 212. In this example, four are provided. The end portion of the work scaffolding member 221 is preferably the upward warp end portion 222 of the upward warp. By making it warp upward, the risk of damaging the film sheet is reduced. Further, a rubber material can be attached to the work scaffolding member 221 to prevent slipping. The octagonal pipe arch material can also be used as the work scaffolding member 221. The work scaffolding member can also be provided in the middle of the vertical frame.
The upper part 213 of the ladder portion, which is the upper end of the vertical frame 212, fits with the ladder fixing member 223, and the work scaffolding member 221 is attached. The fixing member to be attached can be selected according to the work place and the span of the roof hanging timber.

FIG. 10 shows the usage state of the roof work jig, and FIG. 12 shows an example of concretely placing the jig on the roof.
An octagonal pipe arch member 2a is arranged between the ridge 42 and the gutter 43 at an interval S (S = 2000 mm in this example). The grounding member 213 of the roof work jig 200 is placed on the gutter 43, and the work scaffolding material 221 is placed on the adjacent octagonal pipe arch material 2a. In this state, the film sheet can be screwed and fixed to the left and right octagonal pipe arch members 2a.
If a plurality of roof work jigs are used, the work can be continued while moving laterally as it is.

According to the present invention, a cultivation house having a long-span roof arch can be realized, and as the roof arch material is reduced, the light taken into the house increases, photosynthesis can be promoted, and the cultivation yield can be increased. In addition, the cost of installing a cultivation house can be saved because the amount of roof arch material is reduced.
The octagonal pipe arch material has high strength and durability, and the film sheet can be pressed with a surface touch, realizing a structurally durable cultivation house and having a durability of about 5 to 10 years. It is suitable as an arch material for the cultivation house of the present invention because it can fully exert the functions of a certain PO film sheet and a fluorine film sheet having a durability of 10 years or more.

S, S1 interval (span)
100, 110 Long span arch roof cultivation house 1 film sheet 1a film sheet 1F fluorine film

2 Roof rafters 2a Octagonal pipe arch material 2b Deformed octagonal pipe material 21 Roof rafters to start first 22 Roof rafters to be fixed next 23 Unfixed roof rafters 25 Arched roof rafters

3 Temporary fixing part 31 Temporary fixing member 31b Temporary receiving material 31c Temporary receiving octagonal pipe arch material
32 Pressing material 32a Pressing piece 32b Curved end 32c Central piece 32d Screw fixing part 32e Pressing material end 33 Wire material 34 Turnbuckle 36 Screw 37 Sheet receiving member 37a Groove 38 Corrugated wire material 39 Locking part

42 Building 43 Gutter 44 Wife 45 Girder 46 Roof intermediate girder 47 Streaks 48 Top window 49 Top window receiving straight pipe 51 Building side straight pipe 53 Valley pillar 54 Side pillar 55 Side rafters 56 Land beams
58 furring strip
59 eaves beams

200 Roof work jig 210 Ladder part 211 Handrail 212 Vertical frame 213 Upper part of ladder part 214 Grounding member 215 Step rail 220 Work scaffolding part 221 Work scaffolding member 222 Upper warp end part 223 Ladder fixing member

Claims (7)

It is a method of spreading the roof film sheet of a cultivation house where the distance between the roof rafters is 1000 mm to 3000 mm.
The process of fixing the film sheet to the roof rafters that starts first,
Next, the process of extending the film sheet in the direction of the roof rafters to be fixed and temporarily fixing the free film sheet to the temporary fixing member.
A tensioning process in which tension is applied to the temporary fixing member to tension the film sheet.
Fixing process to fix the film sheet to the next roof rafter with a holding material in a tense state,
A method of spreading a roof film sheet, which is characterized by repeating in the order of. The method for expanding a roof film sheet according to claim 1, wherein the film sheet is a fluorine film sheet or a PO film sheet. The method for expanding a roof film sheet according to claim 1 or 2, wherein the roof rafter is an octagonal pipe arch material, and the holding material is a holding material circumscribing three sides of the octagonal pipe arch material. The temporary fixing process is
The temporary fixing member has a temporary fixing portion for fixing the sheet supported by the temporary receiving octagonal pipe arch material, and the temporary fixing portion is composed of a grooved sheet receiving member and a corrugated wire rod, and the film sheet is used as a groove. It is a process of inserting and inserting and fixing the corrugated wire in the groove.
The tensioning step is any of claims 1 to 3, wherein the wire material is attached to the temporary receiving octagonal pipe arch material, the wire material is attached to the member of the cultivation house via the tension adjusting member, and the wire material is tightened and tensioned. How to stretch the roof film sheet described in Crab. It is a jig for roof work of a cultivation house that has a ladder part and a scaffolding part for work.
The work scaffolding portion is at least the upper part of the ladder portion and is attached to the lower surface side of the vertical frame, the length of the work scaffolding member is equal to or greater than the roof rafter spacing S, and has an upper warped end portion. And
The ladder section is a jig for roof work of a cultivation house, which is characterized by having a grounding member having a width larger than the interval between vertical frames. It is the roof of a cultivation house where a film sheet is spread on the roof rafters of the roof arranged at intervals S.
The roof rafters are octagonal pipe arch materials, and the distance S between the roof rafters is 1000 mm to 3000 mm.
The film sheet is a fluorine film sheet or a PO film sheet,
A cultivation house characterized in that a film sheet is covered on an octagonal pipe arch material and is fixed and stretched by a holding material having three pieces circumscribing the three sides of the octagonal pipe arch material. Long span roof. The sixth aspect of claim 6 is a plurality of pillars erected in parallel at intervals larger than the roof rafters of the roof, an eaves frame with beams attached between the columns, and an upper part of the eaves frame. A cultivation house with a long-span roof, which is characterized by being fitted with a long-span roof.

Images