WO2009037388A1

WO2009037388A1 - Agricultural shelter with simplified roof structure

Info

Publication number: WO2009037388A1
Application number: PCT/FR2007/001535
Authority: WO
Inventors: André Barre
Original assignee: Barre Andre
Priority date: 2007-09-20
Filing date: 2007-09-20
Publication date: 2009-03-26
Also published as: MA31781B1; EP2211603A1

Abstract

The invention relates to an agricultural shelter of the greenhouse type, that comprises a structure (1) erected on the ground and adapted for bearing at least one flexible covering member (2) in the form of a web and/or net, said structure including anchoring poles (3) inserted into the ground and to which rigid mounts are attached, said poles (3) and mounts (4) being arranged into rows and columns. According to the invention, each mount (4) in each row is connected to the anterior or posterior mount in this same row by at least two strut members (5) in abutment and removably attached together by a junction member (6) halfway between said two mounts. Each strut member (5) is connected to its mount so that it can be either folded back along the latter or extended substantially radially relative to the latter and connected by the junction member (6) to the homologous strut member. The mounts (4) in each column are then united at their upper ends by an upper horizontal rigid elongated member (7).

Description

SHELTER FOR AGRICULTURAL USE WITH SIMPLIFIED ROOFING ROOF Technical area

The present invention relates to a greenhouse type shelter, for example, simplified roof structure, this shelter providing crop protection against adverse weather conditions. This shelter can also provide protection against the unwanted introduction of insects, arthropods and other crop predators. State of the art

The greenhouses for agricultural use and similar shelters, are traditionally made of rigid arches, metal, joined to each other by horizontal rails consisting of rigid metal profiles.

The dimensions of the arches in height and width determine the height and the width of the greenhouse. When these dimensions are small, the arches are generally in one piece and are easily transportable in vehicles of the road size. On the other hand, for large arches, the impossibility of transporting them in shape in vehicles corresponding to the road gauge has led to them being produced in several sections. In this way the hoops are transportable each in the disassembled state and on site, are assembled by abutment and interlocking sections that compose them. One of the drawbacks of this design method lies in the relative complexity of making the arch sections. Indeed it is used a plurality of bending work of the various sections of arch and deformation of the end portions of the latter by constriction or expansion for the realization of interlocking forms.

In addition, because of the high height of the greenhouses, work at height a few meters above the ground is generally performed, in particular to fix the horizontal rails to the arches previously erected. Other work at height will also be necessary to arrange and fix the tarp on the frame of the greenhouse. These works at height require the implementation of security means can easy to use. For this reason, very often, because of the constraints imposed, the people employed to assemble the greenhouse disobey the safety instructions by neglecting to ensure the lines of lives.

To facilitate the mounting of greenhouses and avoid any work at height is known from the state of the art as reflected in the patent application a greenhouse whose roof is mounted on the ground and is then raised by specific means along supporting pillars to be placed and fixed at the end of the latter. Such a procedure significantly reduces the importance of work at height for this reason it is a factor of saving time and security. Disclosure of the invention

The object of the present invention is to solve the aforementioned problems by proposing a simplified frame greenhouse no longer using arches, designed to be integrally assembled at a short distance from the ground and in a folded state on the ground and then raised to above the ground to be brought into a deployed state and designed so that during assembly the longitudinal bays can be exempted from any obstacle opposing the free movement of the personnel assigned to the assembly which allows an easy installation of the elements of recovery. For this purpose, the greenhouse-type agricultural shelter comprising a structure erected on the floor so as to support at least one flexible covering element in the form of a fabric and / or a net, said framework comprising anchoring piles engaged in the ground to which are fixed rigid amounts, said piles and uprights being arranged in rows and columns, characterized in that each amount of each row is joined to the anterior or posterior amount of the same row by at least two bracing elements abutted and fixed l one to the other halfway between the two said uprights, by a connecting member, that each spacer element is secured to its amount so that it can be folded along the latter or be deployed substantially radially relative to the latter and be joined by the connecting member to the homologous bracing element and that the amounts of each column are consecutive utially joined at the upper end by an upper horizontal rigid elongated element.

The fact of being able to fold the bracing elements makes it possible to free each longitudinal span and to allow the free passage in the latter for the personnel assigned to the assembly.

According to yet another characteristic of the invention, under each longitudinal row formed by the connecting elements is arranged a trough for collecting rain water, snow and hail, said chute or gutter and being carried out of place in place by oblique elongated elements of the corresponding longitudinal span.

According to another characteristic of the invention, the upper elongate element is rigid and is in the form of a clipping metal profile provided with an upper opening running along its entire length which opening is bordered by two lips curved towards the outside. the inside of the profile, the sheet being inserted into the profile and pinched between the lips of the latter and a U-shaped section with a holding wedge being introduced into the clipping profile.

According to another characteristic of the invention, the shelter, from a folded position on the ground according to which the support posts are inclined on the horizontal and rest individually on the anterior anchoring pile, is brought into the deployed position by pivoting the support elements about their hinge pin to their anchoring piles and said greenhouse is held in this extended position by locking the support members in vertical position against their anchoring piles.

According to another characteristic of the invention, each bracing member is made of a flexible wire of synthetic material. The replacement of most roof framing elements by flexible wire elements which can be made of inextensible or slightly extensible synthetic material makes it possible to significantly reduce material costs and manufacturing costs since to make the roof it is sufficient to attach to the support elements the pre-cut frame wire of adequate length.

According to another characteristic of the invention, the covering element is an anti-hail net, permeable to water and air.

According to yet another characteristic of the invention, the two slopes formed in each longitudinal span by the bracing elements are each covered by a sheet of synthetic material transparent to light and impervious to water and air, which tarpaulin spans the entire length of the longitudinal span and is supported foldably by corresponding oblique oblique elements.

According to another characteristic of the invention, the sheet is fixed on the one hand to the corresponding upper longifoπne element and on the other hand to a winding bar extending over the entire length of the span, said bar of winding being coupled to a maneuvering member.

According to yet another characteristic of the invention, the two slopes extending on either side of each upper elongate element are covered by a same tarpaulin fixed by its longitudinal central zone to said upper elongate element.

According to another characteristic of the invention, the two slopes extending on either side of each upper elongate element are each covered by a collapsible shading net by winding towards the upper elongate element of the corresponding slope Advantages brought

The shelter according to the invention does not have an arch which simplifies its realization. Moreover, its mounting on the ground and in particular the mounting on the ground of the covering elements from the longitudinal spans which are free of any obstacle created by the bracing elements reduces the difficulty and the dangerousness of assembling operations performed in height.

Other advantages and features of the invention will appear on reading the description of a preferred embodiment given by way of non-limiting example with reference to the drawings defined below. Brief description of the drawings

FIG. 1 is a perspective view of a shelter according to a first embodiment,

FIG. 2 is a perspective view of the frame of the shelter according to the first embodiment,

FIG. 3 is a partial view, in section, of the shelter at one of the upper longiform elements; FIG. 4 is a partial view, in section, of the shelter at the level of one of the lower longiform elements,

FIG. 5 is a partial view, in section, of the shelter illustrating another method of fastening the nets and tarpaulin to the upper longiform element,

FIG. 6 is a perspective view of detail showing a joining member according to a first embodiment, FIG. 7 is a plan view of the unabridged frame according to a second embodiment,

FIG. 8 is a plan view of the joining member for a shelter according to the second embodiment,

FIG. 9 is a partial view at the level of the upper elongate element of a shelter according to a third embodiment; FIG. 10 is a partial view at the level of the lower longiform element of a shelter according to FIG. a third embodiment,

FIG. 11 is a view of the frame of a shelter in the folded position on the ground,

FIG. 12 is a view of the lower end of an upright and its anchoring pile,

FIG. 13 is a sectional view of a telescopic post in the form of a jack, - Figure 14 is a sectional view of the lower end of a post according to another embodiment,

- Figure 15 is a perspective view of a pile according to another embodiment.

FIG. 16 shows in perspective another embodiment of the shelter, FIG. 17 shows sheets of tarpaulins cooperating with a winding bar according to another embodiment,

FIG. 18 shows in particular a connecting member according to another embodiment,

FIG. 19 shows two sheets of tarpaulin or net associated with tensioning elements,

FIG. 20 shows another embodiment of a connecting member, as well as another embodiment of the fastening of the permanent thread pieces and the fixing of the flexible gutter,

Best mode of realization of the invention

The agricultural shelter according to the invention comprises a frame 1 erected on the floor designed to support at least one flexible covering element 2, in the form of a fabric and / or net, which can form in combination with the frame 1 a volume closed greenhouse that can be opened for aeration. The frame 1 of this shelter, comprises anchoring piles 3 engaged in the ground to which are secured vertical uprights 4, rigid, metallic, which carry away from the ground the covering element 2.

The anchoring piles 3 and the uprights 4 are arranged in rows and columns, the anchoring piles 3 of each column being evenly spaced. Two consecutive columns determine a longitudinal span whereas two successive rows determine a transverse span.

According to one of the aspects of the invention, each upright 4 of each row is joined to the front or rear upright 4 of the same row by at least two transverse bracing elements 5 joined together and secured to each other. halfway between the uprights, by a connecting member 6. Each spacer element (5) is secured to its amount so that it can either be folded along the latter or be deployed substantially radially relative to the latter and be detachably joined by the connecting member 6 to the homologous bracing element. By folding the bracing elements 5 along the amounts it becomes possible to clear each longitudinal span of any obstacle. This arrangement, when the shelter is in particular folded on the ground, allows the free movement along the longitudinal bays and facilitate the installation from inside the shelter, the cover elements.

Moreover, the uprights 4 of each column are consecutively joined at the upper end by a longitudinal horizontal rigid upper longitudinal element 7.

The covering element 2 extends over one or more successive transverse bays and preferably along the entire length of the associated longitudinal bays and ensures a permanent or temporary covering of the corresponding bay or bays. This covering element 2 may be constituted by a permeable net in the air. The mesh of this net may be of a small size to prevent the passage of hailstones and insects or other arthropods while allowing good aeration of the greenhouse and good penetration of rain or cast iron. the snow. If the stitches are sufficiently fine, this net can be a sunscreen capable of reducing the rate of solar light in the shelter.

In each longitudinal span formed between two consecutive columns may be disposed, according to a first embodiment, a longitudinal longitudinal rigid element, horizontal lower 8 occupying a lower position with respect to the upper longiform elements 7, and secured to the junction members 6 of the corresponding span. Preferably, each lower elongate element 8 extends above the connecting members 6 which carry it.

According to this aspect of the invention the covering element 2 or each covering element is successively engaged at least on an upper elongate element 7 and under a lower elongate element 8, said covering element 2 being applied against the upper elongate element 7 and against the lower elongated element 8 under the effect of its tensioning.

According to an alternative embodiment, the shelter is free of lower longiform elements 8 and the covering element or elements are only fixed to the upper longiform elements 7. These covering elements may be arranged in tension between the upper longiform elements in a relaxed manner so that it can rest on the bracing elements (5). This arrangement is able to carry over these bracing elements and no longer exclusively on the covering elements the weight of hailstones, snow or sand may eventually accumulate on the cover elements. Such an arrangement is shown in Figure 16 which illustrates the two mounting options. To the covering element 2 may be associated a shading net 9 and a transparent cover

10 in synthetic material. The shading net 9 may be arranged on the anti-hail net in successive bands, extending longitudinally respectively on the upper longitudinal longiform elements to which they are fixed in the manner to be described later. Each band is arranged astride its upper elongate element 7. Each band, on either side of the longitudinal upper element which carries it, cooperates with a winding bar 90 operable by any known means. By winding the band on each bar 90 or unwinding it is possible to adjust the degree of shading of the greenhouse.

As can be seen, the shading net 9 is carried by the permanent net 2. To maintain the shading net 9 against the permanent net 2, there will be provided holding son 11 extending in tension from the first fingers vertical projections 70 projecting upwards carried by the upper longitudinal longiform elements 7, towards second vertical fingers 80, projecting upwards, carried by the longitudinal lower longitudinal elements 8.

The transparent cover 10 may also be formed of successive bands extending longitudinally on the upper elongate elements 7 to which they are fixed as will be described later. Each sheet 10 on either side of the upper longitudinal elongate element 7 winds on two winding bars 100. The two rollers that form the sheet and the two winding bars are carried by the oblique longiform elements 5 .

The degree of winding and unfolding of each pan tarpaulin 10 determines the degree of ventilation of the greenhouse and the degree of closure of the internal volume of the latter. The winding bars 90 and 100 are respectively coupled to their own operating means.

Each winding bar 90, 100 may be constituted by at least one tubular or solid metal profile. This bar may consist only of a single tabular section, for example a section of square section. In this case the band will be fixed by clamps to the winding profile.

The winding bar as can be seen in FIG. 17 may consist of at least two solid sections of circular cross section disposed respectively on either side of the corresponding edge of the strip and joined one to the other. other across the band by staples evenly spaced. These profiles can be deployed in a helix. Such an arrangement can be adopted to join two bands to each other for example at each level (Fig.17).

Preferably, each longitudinal longitudinal elongated element 7 consists of a clipping profile, namely a profile having at least one longitudinal opening delimited by two longitudinal lips formed by folding the profile wall inwards. In this clipping profile, according to a first embodiment, fastening profiles 71 held in abutment against the lips of the profile by nut clamping 72, engaged in screwing on the threaded rods of U-shaped flanges engaged in bores, will be introduced. the fastening section 71, the flange by its core coming against the underside of said fastening section 71. The clamping nuts 72 come to bear against the clipping profile by means of platelets. The upper part of the flanges form the vertical fingers 70 mentioned above.

The various nets and sheets 2, 9, 10 will be attached to the threaded rods 70 of the flanges. For this purpose they will be provided with fixing eyelets by which they will be engaged on the rods of the flanges. Seals may be arranged at the eyelets.

The various nets 2, 9 and tarpaulin 10 can be fixed at each of the rods by pinching between two common nuts, or be fixed on each rod either collectively but dissociated manner, each net and tarpaulin then being fixed on the rod corresponding by pinching between two nuts proper to each.

According to another embodiment, as represented in FIG. 5, the fastening of the nets 9 and the tarpaulin 10 is effected by introducing the latter into the upper elongate element 7 and blocking the latter against the lips of the elongate element by introduction into the latter of a U-shaped section 73 designed to receive a holding wedge 74. In this figure the permanent thread 2 is not fixed to the elongated element 7 but alternatively it can be attached to the latter of the way that has just been described.

Previously described nets and tarpaulin formed strips extending longitudinally on the greenhouse but alternatively, they can extend transversely. According to the preferred embodiment, each upright 4 comprises at the upper end a head

12 by which it carries the corresponding longitudinal elongate element 7.

Each lower longitudinal elongated element 8 is constituted by a tabular profile of circular cross-section to good by a clipping profile of the same type as that described above. According to a first embodiment, the elements bracing 5 joining the amounts of each row are constituted by flexible son preferably of synthetic material, of the type of those for example, known under the trade name of "BAICO".

At their point of their abutment, the bracing elements 5 are joined to one another by the joining member 6 constituted, according to a first variant of execution as illustrated in FIG. clamping member comprising a lower jaw 60 and an upper jaw 61 secured to one another by two threaded rods 62 carrying at the upper end the corresponding lower elongate element 8.

The two threaded rods are joined at the upper end by a transverse bridge 63 and are engaged in two through-bores made in the lower elongate element 8, said elongated element abutting against the transverse bridge 63 under the effect of tensioning. of the corresponding covering element 2.

According to another embodiment as represented in FIG. 7 oblique elements 5 in the form of flexible wires, the latter at each upright 4 are each arranged in a loop extending between the head 12 of the corresponding upright 4 and a point lower of the latter.

The junction member 6, according to this embodiment, consists of two angled elements 64 backed to each other to form an X-shaped structure, and fixed to the same plate 65 by flanges 66. Each element Longiforme 5 in the form of a loop is engaged on a bent element 64 which is specific to it. Each bent element comprises a vertical dorsal portion and two bent side portions, said portions forming a groove for holding the corresponding wire 5.

With such an arrangement, in the position of complete deployment of the tarpaulin panels 10, the end portions of the latter develop vertically facing the dorsal zone of the corresponding bent element. This arrangement avoids the formation of a water pocket behind the winding bars 100. According to another embodiment as shown in FIG. 18, each connecting member

6 consists of a flange consisting of two flanges flanges 601 joined to each other by at least one clamping bolt 602, the two bracing elements 5 to be joined being engaged between the two flange flanges for there be immobilized by tightening. Clamping is performed by bringing the two flange flanges closer together by screwing the nut of the bolt onto the bolt of the bolt. Preferably the flange comprises two opposite curved surfaces 603 of winding of the two bracing elements 5, the width of each winding surface being less than the diameter of the constituent wire of each bracing member 5 so that the two flanges 601 can come under pressure against the bracing elements 5.

Advantageously are provided two clamping bolts 602 around the threaded rod of the screw of each and between the two flanges is engaged a roller whose rim is one of the curved surfaces 603 above-mentioned.

By removing the bolts 602 it becomes possible to separate one of the bracing elements 5 from the other and thus free a free passage in each longitudinal span. According to an alternative embodiment of the agricultural shelter (Fig.18), the covering element is formed of several strips, each of which is attached to an upper profile and to one and form two sides in slope on either side of this profile. According to this arrangement each longitudinal span can be covered by two sheets of tarpaulin or net, the latter being rollable on a winding bar constituted as previously described by two solid profiles joined to one another through the pan of tarpaulin by regularly spaced staples. To immobilize the two sheets of tarpaulin or net in the deployed position, each joining member 6 in the form of a flange as previously described, removably carries a clip 604 substantially U-shaped, each of the side branches is bent downwards and the outside so as to form a hook. This clamp is engaged removably between the flanges 601. This clamp 604 therefore comprises two hooks which are provided to perforate the two panels behind their winding bar. The loop shape that forms the U of the clamp can be used for the tensioning weight suspension. For the removal of the clamp, the user releases the two hooks of the two panels by pushing upwards and then by hand tightening, bring the two branches of the U closer together so that the clamp can be removed. the connecting member 6.

According to another embodiment as shown in FIG. 19, the two sections of temporary covering elements associated with each longitudinal span are biased towards each other, that is to say in a recovery position of the corresponding bay, by tensioning elements 610. Through the action of these elements 610 the two sides can be embedded or overlap which ensures sealing. According to this embodiment, the sheets of tarpaulin or netting are no longer disposed above the bracing elements 5 but are arranged in the triangular shape that each of them is caused to form. Each tensioning element 610 co-operates on the one hand with one of the uprights 3 and on the other hand with the panel of facing element opposite this upright. More particularly, the tensioning member 610 is detachably attached to the sheet of sheet or associated net and acts radially on the winding bar that it has. Advantageously, each tensioning member 610 is constituted by an elastic spring-like spring or an elastic cable of the type known under the trade name "Sandow". The pulling line of each tensioning element may be in the plane of the lap panel or may be arranged obliquely to the plane. On the right side of the figure is shown a tensioning element in the form of coil spring while on the left side is shown a tensioning element in the form of an elastic cable.

Thanks to these provisions, in the case where snow, hail or sand has accumulated on the two sheets of tarpaulin or net, they may deviate from each other if the weight supported is too important and can lead to destruction of both sides of the frame of the shelter. The elements accumulated on the net can thus flow towards the ground. In addition, the fact of arranging each sheet of tarpaulin or net in the triangle formed by the corresponding spacer element 5, has the advantage of using this triangular shape to maintain the pan tarpaulin or corresponding net. Thus the sheet of tarpaulin or net is confined in the triangle formed and can not extract itself.

According to another embodiment of the greenhouse according to the invention as represented in FIGS. 9 and 10, the transverse longiform elements 5 joining the uprights of each row are constituted by rigid elements in tabular form for example, each secured at their upper end to the head 12 carried by the corresponding amount 4.

According to this arrangement, each bracing element 5 has a rectilinear vertical bottom portion opposite which is positioned the winding bar 100 of the corresponding sheet 10 when said pan is fully deployed. Such an arrangement allows the flow of water on the sheet without forming retention pockets due to the presence of the winding bar.

Each bracing member 5, by its upper part is preferably articulated along a horizontal axis parallel to the columns, the head 12 carried by the corresponding amount 4.

As mentioned above, the bracing members 5, at their lower end, are attached to a connecting member 6.

In Figure 10 we can see a connecting member adapted to this embodiment. This joining member comprises a vertical plate 67 receiving in fixing two flanges 68 in the form of a collar in each of which is engaged the rectilinear and vertical lower part of the corresponding bracing element 5. To this plate can be fixed the elongate element lower 8. Under each lower elongate element 8 is disposed a chute 13 for collecting rainwater, snow and hail. This chute 13, which can be seen in Figure 4, is parallel to the lower elongate element 8 and is carried from place to place by the oblique oblique elements 5 of the corresponding longitudinal span.

According to the preferred embodiment, each chute 13 or gutter is constituted by a strip of a sheet of a flexible waterproof material, bordered along its two longitudinal sides by two flexible beads 131 receiving suspension hooks 132 to spacer elements 5 of the corresponding longitudinal span.

Each flexible gutter may have transverse struts extending from one longitudinal bead to the other to maintain the beads of the chute spaced from each other and prevent under the effect of the weight of the water the gutter narrows by approaching the beads 131. According to another arrangement, the bracing members 5 fixedly carry supports 133 able to receive the hooks 131.

According to another variant of execution as shown in FIG. 20, the joining member 6 of the rigid bracing elements 5 is constituted by a U-shaped arch comprising two parallel arcuate side segments joined one to the other. another by a basic arch segment. The two lateral hoop segments are rectilinear and are designed to be releasably nested each in the vertical part of the corresponding element 5. The basal segment can be curved or rectilinear.

It is noted that according to this variant embodiment, the lower elements 8 are no longer present. Advantageously, the bracing elements 5 will each be braced by a strut, not shown. Each strut will be secured on the one hand detachably to the corresponding element 5 and on the other hand articulated to the upright 4 associated with the corresponding element 5. Each element 5 with its strut and the amount forms a triangle.

Still according to this embodiment, each permanent covering element 2 is fixed to a clipping profile 620 fixed by flange on the lower part of the bracing elements 5. correspondents. Preferably each clipping profile 620 has two opposite clipping grooves, one of which receives the permanent covering element 2 in attachment. The other groove is designed to receive the gutter 13 in attachment, the latter always being made of a watertight flexible strip forming two lateral flanks and a curved bottom joined to the two lateral flanks. According to this embodiment it can be seen that the gutter 13 extends under each junction member 6 of the same longitudinal span.

Advantageously, the gutter 13 has two lateral sealing flaps 130 extending upwards from the corresponding clipping profile 620, opposite each of which is positioned the lower part of the temporary covering strip 10 when the latter is fully deployed. . This ensures a good water and windtightness.

Advantageously, each gutter 13 is fixed to each corresponding clipping profile along a horizontal line spaced from the horizontal upper edge of the corresponding flank, which ensures the formation of the two lateral flaps 130.

According to the preferred embodiment, the head 12 that comprises each upright 4 is mounted in an articulated manner on the latter and in a horizontal axis perpendicular to the columns. Moreover, each upright 4 is also hingedly mounted to its anchoring pile 3 and this along a horizontal axis parallel to the axis of articulation of the head to the upright 4. Because of these arrangements, the shelter of the kind greenhouse, of a folded position on the ground (Figure 11), according to laqueËe the retaining posts 4 are inclined on the horizontal and individually rest on the anterior anchoring pile 3, is brought into the deployed position by pivoting the amounts around from their axis of articulation to their anchoring piles. The framework of the greenhouse is maintained in this deployed position by locking the uprights 4 in vertical position against their anchoring piles 3.

Each amount 4 retaining, as can be seen in Figure 12, is immobilized vertically against its anchoring piles 3 by a fastening flange secured to said anchoring piles. This anchoring pile, as can be seen comprises a vertical extension 3a carrying the fastening flange 14, the amount in the extended position coming against the extension 3a.

To allow the deployment of the greenhouse from its folded position on the ground to its deployed position may be used traction devices such as slings and winches.

According to another embodiment, as shown in FIG. 13, the uprights 4 are telescopic and are arranged in water cylinders, the upper part of the upright constitutes the rod 40 of the jack, the lower part of the upright constitutes the body 41. cylinder rod 40, in the lower part, is provided with a cylindrical widening carrying a piston 42. The tubular body 41 in the lower part receives a closure cap 43 in which is formed a bore for introducing water under pressure into the cylinder body formed. After deployment, the cylinder rod 40 is locked in the body 41 by a diametral pin.

So that the upright 4 can recover when it is supplied with water, the upper part of the rod 40 is connected to two lateral stabilization cables fixed at their lower end to piles driven into the ground. According to another embodiment, as shown in FIG. 14, the upright 4, in the lower part, comprises a sleeve shape 44 through which it is fitted on the pile 3.

Preferably, the furnace shape 44 that comprises each upright 4 is formed by casting concrete in said amount. According to another embodiment, each pile 3 comprises a vertical cylindrical sleeve 30 intended to receive the lower part of the upright 4. To this sleeve is fixed a metal anchoring rod on the ground, of strong section comprising a twist which facilitates its engagement in the ground.

According to the preferred embodiment, the anchor rod and the sleeve are one.

The covering element 2 or each covering element facing each lower elongate element 8 is provided with holes for evacuating hailstones, rain water and snow towards the lower chute 13. This provision aims at to prevent the accumulations of hailstones or snow under the effect of their weight from tearing the net.

According to another embodiment of the invention, always to prevent the weight of hail, snow or sand from breaking the permanent net or the elements that support it, the permanent net 2 consists of several panels joined to each other by elastic tensioning links, whereby the panels, under the effect of weight can deviate to release hail or snow evacuation openings and return to position following this evacuation under the effect of the elasticity of the tensioning links. _

It goes without saying that the present invention may receive any arrangements and variations in the field of technical equivalents without departing from the scope of this patent.

Claims

claims

1 / Shelter for agricultural use of the greenhouse type comprising a frame (1) erected on the floor designed to support at least one flexible covering element (2) in the form of a fabric and / or net, said framework comprising piles (3) anchors engaged in the ground to which are secured rigid uprights, said piles (3) and uprights (4) being arranged in rows and columns, characterized in that each upright (4) of each row is joined to the anterior or posterior amount of this same row by at least two bracing members (5) abutting and detachably secured to each other midway between said two uprights, by a connecting member (6), that each element bracing (5) is secured to its amount so that it can be folded along the latter or be deployed substantially radially relative thereto and be joined by the junction member (6) to the element d bridging ue and that the uprights (4) of each column are consecutively joined at the upper end by a horizontal rigid elongate element (7) upper.

2 / Shelter according to any one of the preceding claims characterized in that it comprises at least one temporary covering element secured to a winding bar (90, 100). 3 / shelter for agricultural use according to claim 1, characterized in that in each longitudinal span formed between two consecutive columns is disposed a rigid elongate element, horizontal lower (8) occupying a lower position with respect to the upper longiform elements (7), and secured to the connecting members (6) of the corresponding span, and that the covering element (2) or each covering element is successively engaged at least on an upper elongate element (7) and under a lower elongate element (8). ), said covering element (2) being applied against the upper elongate element (7) and against the lower elongate element (8) under the effect of its tensioning.

4 / Shelter for agricultural use according to any one of the preceding claims, characterized in that the covering element (2) or each covering element extends over one or more successive transverse bays formed between the rows and that of one end to the other of the said bay or bays and ensures a permanent covering of the corresponding bay (s).

5 / Shelter for agricultural use according to claim 1 or claim 3, characterized in that under each lower elongate element (8) is disposed a chute (13) for the recovery of rainwater, snow and hail said trough (13) or gutter being parallel to the lower elongate element (7) and being carried from place to place by the bracing members (5) of the corresponding longitudinal span.

6 / Shelter for agricultural use according to the preceding claim, characterized in that each chute (13) or gutter is constituted by a strip of a sheet of a flexible waterproof material bordered along its two longitudinal sides by two flexible beads (131) receiving suspension hooks (132) with oblique longitudinal elements (5) of the corresponding longitudinal span.

Il shelter for agricultural use according to the preceding claim characterized in that each flexible gutter (13) has transverse spacers extending from one longitudinal bead to the other.

8 / Shelter for agricultural use according to any one of the preceding claims, characterized in that each lower elongate element (8) extends above the connecting members (6) which carry it. _w

13

91 Shelter for agricultural use according to any one of the preceding claims, characterized in that each connecting member (6) is a clamping member which comprises a lower jaw (60) and an upper jaw (61) secured one to the other by two threaded rods (62) carrying at the upper end the corresponding lower elongate element (8). 10 / shelter for agricultural use according to claim 9, characterized in that the two threaded rods (62) are joined at the upper end by a transverse bridge (63) and they are engaged in two through holes made in the elongate element lower (8), said elongate element (8) abutting against the transverse bridge under the effect of the tensioning of the corresponding covering element (2). 11 / shelter for agricultural use according to any one of the preceding claims, characterized in that "each spacer element (5) is constituted by a synthetic thread forming a loop from the amount that carries it.

12 / Shelter for agricultural use according to claim 11 characterized in that each connecting element (6) consists of two elbows (64) back to each other to form an X structure, each of said son (5) being engaged on a bent element (5) which is specific to it.

13 / Shelter for agricultural use according to claim 12, characterized in that each elbow element (64) comprises a vertical dorsal portion and two bent side portions, said groove portions for holding the wire (5) corresponding.

14 / Shelter for agricultural use according to claim 11, characterized in that each connecting member (6) consists of a flange consisting of two flange flanges (601) joined to one another by at least one bolt clamping device (602), the two spacer elements (5) to be joined being engaged between the two flange flanges to be immobilized by clamping. Clamping is effected by bringing the two flange flanges closer together by screwing the nut of the bolt onto the bolt of the bolt and the flange comprises two opposite curved surfaces (603) for winding the two elements. of bracing (5), the width of each winding surface being smaller than the diameter of the constituent wire of each bracing element (5) so that the two flanges (601) can come into pressure against the bracing elements ( 5).

15 / Shelter for agricultural use according to any one of the preceding claims characterized in that the covering element (2) is a net anti-hail, permeable to water and air. 16 / Shelter for agricultural use according to any one of the preceding claims, characterized in that the covering element or each covering element (2) facing each lower elongate element is provided with perforations of hail evacuation, rainwater and snow to the lower chute (13).

17 / Shelter for agricultural use according to any one of claims 1 to 15, characterized in that the permanent thread (2) consists of several panels joined to each other by elastic links through which the panels, under the effect weight can deviate to release hail openings or snow and return to position following this evacuation.

18 / Shelter for agricultural use according to any one of the preceding claims, characterized in that the two slopes formed in each longitudinal span by the bracing elements (5) are each covered by a sheet (10) of light-transparent, water-tight and airtight synthetic material, which sheet extends over the entire length of the longitudinal span and is foldably supported by the long-form elements oblique (5) corresponding.

19 / Shelter for agricultural use according to the preceding claim, characterized in that the sheet (10) is fixed on the one hand to the corresponding upper elongate element (7) and on the other hand to a winding bar (100) extending over the entire length of the span, said winding bar (100) being coupled to an operating member.

20 / Shelter for agricultural use according to claim 18 or claim 19, characterized in that the covering cover (10) is disposed under the permanent cover member (2). 21 / Shelter for agricultural use according to any one of claims 18 to 20, characterized in that the two slopes extending on either side of each upper elongate element (7) are covered by a same sheet (10) fixed by its central longitudinal zone to said upper elongate element (7).

22 / Shelter for agricultural use according to any one of the preceding claims, characterized in that the upper elongate element (7) is rigid and is in the form of a clipping metal profile provided with an upper opening current on its entire length which opening is bordered by two lips bent inwardly of the profile, the sheet (10) being inserted into the profile and clamped between the lips of the latter and a U-profile with a holding wedge being introduced into the clipping profile.

23 / Agricultural shelter according to any one of the preceding claims, characterized in that the permanent covering element (2) is attached to the upper longiform elements.

24 / Shelter for agricultural use according to any one of the preceding claims, characterized in that the two slopes extending on either side of each upper elongate element are each covered by a shading net (9) foldable by winding to the upper elongate element (8) of the corresponding slope. 25 / shelter for agricultural use according to any one of the preceding claims, characterized in that each upright 4 of the frame 1 is provided at the upper end with a pivoting head 12 mounted in an articulated manner on the latter and that each upright 4 is also hingedly mounted to its anchoring pile 3.

26 / Shelter for agricultural use according to the preceding claim characterized in that each upright 4 is articulated to its pile 3 by its lower part and is held vertically against its pile 3 by a flange 14.

27 / Shelter for agricultural use according to the preceding claim, characterized in that each upright 4 is arranged in a water jack.

28 / Shelter for agricultural use according to any one of the preceding claims, characterized in that each upright 4 in the lower portion comprises a sleeve shape 44 through which it is fitted on the pile 3.

29 / Shelter according to any one of the preceding claims, characterized in that each pile 3 comprises a vertical cylindrical sleeve 30 for receiving the lower portion of the upright 4. 30 / Shelter according to claim 1, characterized in that the bracing elements (5) joining the uprights of each row are constituted by rigid elements, secured at their upper end to the head (12) carried by the amount (4) corresponding.

31 / Shelter according to claims 2 and 30 taken together, characterized in that each element (5) has a vertical lower portion opposite which is positioned the winding bar (100) of the corresponding tarpaulin (10), when said pan is fully deployed.

32 / Shelter according to claim 30 or claim 31, characterized in that each spacer element (5), by its upper part is articulated to the head (12) carried by the upright (4) corresponding. 33 / Shelter according to any one of claims 30 to 32, characterized in that the connecting member 6 of the rigid elements 5 is constituted by a U-shaped arch comprising two lateral segments of the hoop parallel parallel to each other. another by a base segment of a bow, the two side bow segments being rectilinear and being adapted to be releasably engaged each in the vertical part of the corresponding member (5). 34 / Shelter according to the preceding claim, characterized in that each permanent covering element (2) is fixed to a clipping profile (620) fixed by flange on the lower part of the corresponding bracing elements (5), that each profile clipping device (620) has two opposite clipping grooves, one of which receives in fixing the permanent covering element 2 and whose other groove is intended to receive the gutter (13) in fixation, the latter being always constituted by a flexible watertight strip forming two lateral flanks and a curved bottom joined to the two lateral flanks. •

35 / Shelter according to the preceding claim, characterized in that the gutter (13) has two lateral sealing flaps (130) extending upwardly from the corresponding clipping profile (620), opposite each of which is positioned the lower portion of the temporary lap strip (10) when the latter is fully deployed. 36 / Shelter according to claim 2 characterized in that the winding bar (90, 100) is constituted by at least two solid sections of circular cross section disposed respectively on either side of the corresponding edge of the strip and joined to each other across the web by regularly spaced staples.

37 / Shelter according to claim 2 characterized in that the two sections of temporary covering element associated with each longitudinal span are biased towards each other, that is to say in a covering position of the corresponding span , by tensioning elements (610) which are arranged in the triangular shape formed by the corresponding bracing member (5), that each tensioning element (610) cooperates on the one hand with one of the uprights (3) and on the other hand with the panel of facing element opposite this amount. 38 / Shelter according to claim 37, characterized in that the tensioning member (610) is detachably attached to the associated cover member and acts radially on the winding bar that it has.

39 / Shelter according to the preceding claim, characterized in that each tensioning member (610) is constituted by an elastic link.