FR2471738A1 - Greenhouse roof with ventilation - has plastic film held in V=shape by tensioner hook underneath and adjustable air flap at side - Google Patents

Abstract

The greenhouse comprises rows of rigid uprights (1,2), spaced apart and provided with horizontal metal rods between them These rods locate the sides of plastic sleeves (11,12), fitting inside them, with one rod being higher than its counterpart. Hooks (20) pass through this plastic film, their upper ends passing over a rod (10) on the film roof and tensioned by a spring (22) onto a cable (14) below. This provides a vee shape to the roof with rainwater collecting in a gutter (23). At the side a ventilation (AB) space is covered by a flap (25), its opening adjusted by the linkage.

Description

The object of the invention relates to a structured and simplified functional mounting device for chapel greenhouses.

 It is intended to suppress traditional trusses and to produce a flexible, reinforced and stabilized, self-resisting super-structure in order to suppress rigid trusses and their assemblies.

 In the given devices, the most complex part consisted of the super-structure comprising trusses on which the synthetic films were stretched.

We were then obliged not only to stabilize these elements but also to mount ventilation systems with controls that are difficult to adjust.

These assemblies required numerous elements, the assembly of which required costly labor with considerable assembly work time.

 Maintenance was also expensive and wind resistance defective.

 The device according to the invention eliminates these in; convenient and allows for rapid assembly, significant savings in labor and raw materials, as well as self-structuring giving the assembly increased resistance while facilitating ventilation and maintenance with total elimination of conventional @igid farms.

It is essentially characterized by the combination of synthetic resin sheaths forming a covering and carrying element, self-stabilized by lateral frames supported by symmetrically opposite hooks and installed at different heights on the supporting pillars and a frame or rod axial stretched by hooks anchored on a transverse cable connected to the studs in a plane below the top of the inverted double slope.

In the accompanying drawings given by way of nonlimiting example of one of the embodiments of the subject of the invention
Figure 1 shows seen in elevation and in longitudinal section the entire device characterizing the invention.

 Figure 2 shows the tension cable stabilizing the flexible and inverted super-structure.

 Figure 3 shows on a different scale the construction detail of the super structure.

 The simplified construction of greenhouses includes an installation of uprights 1, 2, 3, and others (fig 1).

These pillars are preferably tubular with a round or square section.

They are anchored according to conventional methods, either with concrete studs, or by any other known means with normal distances.

 They are supported by tie rods 4 and others with terminal ends.

The upper parts are provided with hooks 5, 6 installed on the opposite faces at different heights.

 These hooks retain metal rods 7, 8, which pass through the opposite ends of the synthetic resin sheaths 9.

 A median metal rod 10 stretches the two double-walled sectors 11, 12.

 The cover has the profile of an inverted V with equal opposite symmetrical sectors, with opposite inclinations.

This axial stiffening edge is stretched by a tie rod 13 hung on a perpendicular cable 14.

This target is formed by two parallel metal wires the '15, 16, each bucIant by a complete strapping 17, 18, on each pillar.

 They are tensioned by twisting by means of a key and are held at the desired tension by the rod of the hook 19.

The axial hooking system can be constituted by an upper hook 20 encircling the rod 10 (FIG. 3).

The hook rod 21 is connected via a tensioner 222 to a support ring 22 in the axis of which is positioned a longitudinal bowl 23
This collector is intended to receive rainwater which can flow through the passage opening of the hook rod, as well as the fumes which can accumulate under the lower facings of the covering sectors 11, 12.

 The difference in installation height of the hooks 5, 6 determines a height spacing A, B, letting the air penetrate in the vertical interval, at the same point where the covering surface 11 stops (FIG. 3).

This ventilation opening 24 can be closed on command by the hinged flap 25, the curvilinear functional profile of contact, avoiding any damage to the upper part of the film of the sheath.

 This flap can be controlled from the inside and articulated in one direction or the other using a conventional wheelhouse.

 It can even be made of translucent or transparent material, and controlled by thermostat.

This elimination of trusses by the new application of a synthetic resin sheath with an inverted slope compared to traditional slopes has maximum advantages.

 Wind resistance is maximum, the lateral side stays 4 and other curvilinear offer a line of flight at the highest serial pressures.

This structural resistance is completed by the erasure of the inverted "farm" and the continuation line initiated by the profiled flap 24.

The sectors 11, 12, form a gutter in the event of rain and with a reduced slope 9 ensure complete drainage as well as rapid flow.

Finally, the double slope with inverted top, causes a thermal defection avoiding the accumulation of heat in the upper part and facilitates the distribution of the air conditioning by lowering the classic high collector point.

 It is also possible to use the sheaths as conductive pipes or insulating element by using the static air mattress remaining therein, in the absence of an additional collection or circulation installation.

However, the shapes, dimensions and arrangements of the various elements may vary within the limit of the equivalents, as moreover the materials used for their manufacture, without thereby changing the general design of the invention which has just been described.

 This is how it is possible to connect the posts longitudinally to each other by targets 26, 27 according to the same principle as that described in FIG. 2.

Claims (4)

10 Structured and simplified functional mounting device for chapel greenhouses, allowing the removal of traditional rigid trusses and producing a flexible, reinforced, stabilized, self-resisting super-structure characterized by the combination of a synthetic resin sheath forming self-supporting and covering element stabilized by lateral longitudinal reinforcement or rods (7, 8) supported by symmetrically opposite hooks (5, 6) and installed at different heights on the vertical supporting pillars and an axial longitudinal reinforcement or rod (10) tensioned by hooks (13) on transverse cable (14) connected to the supporting uprights (1, 2, 3).  2 Device according to claim 1 characterized by the fact that the implantation of the symmetrically opposite hooks (5, 6) provides a free ventilation space (15) is closed by an articulated flap (24) with control linkage adjusting the aperture  3 Device according to claim 1 characterized in that the tension cable (14) connected by hook (13) to the axial frame (10) consists of a double wire (159 16) anchored on the vertical pillars and forming a double loop (17, 18) allowing the passage of a torsion key and stabilized at the desired tension by the hook (13) for fixing to the axial frame (10). 4 Device according to claim 1 characterized by the fact that the posts can be fixed longitudinally by wiring (26, 27).