BR-102022023712-B1 - Flexible structure assembly system for agricultural greenhouses, with a spring-loaded movement system in response to wind action.

Abstract

METHOD FOR ASSEMBLING A FLEXIBLE STRUCTURE FOR AGRICULTURAL GREENHOUSES, WITH A SPRINGING SYSTEM FOR MOVEMENT IN RELATION TO WIND ACTION. To enable an agricultural greenhouse for suspended cultivation troughs (C) to follow the movement of the winds, canceling the friction force thanks to its structure working in a springing system. For this purpose, columns (1) fixed in the ground (S) following the contour of the cultivation area are completed by posts (2), the whole assembly having slots (3) at the top, for the passage and direction of cables (4), extended transversely (4a) and cables extended longitudinally (4b) tensioned and fixed in the ground (S) by anchors (5). Course delimiting cables (4c) are tied to the transverse cables (4a), which also receive the posts (2) tied from notches (2a) made near their top. In addition, the transverse cables (4a) receive curved beams (6) fixed by through holes (7) at their ends, the beams (6) being subsequently distributed at regular spacing, forming a frame of rows in the longitudinal direction to receive, in each row, the respective film (8) with reinforcement (9) on the sides for holes (10) through which the films (8) are tied, which are stretched by their head edges (11) and also fixed by the anchors (5). Upon receiving a gust of (...).

Inventors

• PAULO KREITMAIER FRANCO

Assignees

• POLITEC INDUSTRIA DE PLÁSTICOS LTDA

Dates

Publication Date

20260310

Application Date

20221122

Claims (3)

1. 1 - “FLEXIBLE STRUCTURE ASSEMBLY SYSTEM FOR AGRICULTURAL GREENHOUSES”, consisting of a cultivation area (A) of any size, which is delimited by columns (1) driven into the ground (S) and completed by sequences of shorter posts (2), distributed more internally, but only set by their bases in the ground (S), such columns (1) and posts (2) having slots (3) characterized by the passage and upper direction of cables; said cables (4a) extending transversely through the slots (3) of the columns (1) and cables (4b) extending longitudinally through the slots of the posts (2), both (4a) and (4b) being directed downwards, stretched at a gradual inclination to a point away from the cultivation area (A) and connected by their ends to anchors (5) driven into the ground (S); said cables (4a) receiving the tie of the posts (2), from notches (2a) made next to their top, in addition to the tie of course delimiting cables (4c) of the ascent of said posts (2); the transverse cables (4a) also fixing beams (6) through the through holes (7) of their ends, the beams (6) being curved galvanized tubes, subsequently distributed in regular spacing so as to form rows in the longitudinal direction, over the transverse cables (4a) of the set of columns (1) and posts (2); said rows of beams (6) being covered by respective polymeric film (8), with reinforcement (9) on the sides, pierced by regularly spaced holes (10), said films (8) tied together, side by side in each row of beams (6) through the holes (10) of their side reinforcements (9), being pulled by their head edges (11) and brought in gradual inclination to a point away from the cultivation area (A) where they are tied forming film terminals (12) to be attached to the anchors (5).
2. 2 - “FLEXIBLE STRUCTURE ASSEMBLY SYSTEM FOR AGRICULTURAL GREENHOUSES”, according to claim 1, the structure assembled in a position related to the incidence of winds, characterized by said structure being completely open laterally, forming, by the rows of films (8) a single block, with a convex contour at its top delineated by the curvature of the beams (6), fixed to the transverse strands (4a), as well as the posts (2), fixed at their top also by the transverse strands (4a), in addition to the longitudinal strands (4b) and the strands (4c) delimiting the course of the posts (2), all in a flexible condition.
3. 3 - “SPRINGING SYSTEM OF MOVEMENT IN RELATION TO THE ACTION OF WINDS”, where the greenhouse defined in claims 1 and 2, upon receiving a gust of wind, is characterized by lifting its film covering (8) and curved beams (6), canceling these natural forces and carrying the posts (2) upwards to a height delimited by the delimiting cables (4c), maintaining, by the arrangement of cables (4a), (4b) and (4c) connected to their anchors (5), a tension to obtain a force contrary to the force imposed by the winds on the heads (11) of the greenhouse, further fixing its entire flexible structure to the ground; after the gust passes, the greenhouse slowly descends, naturally returning to its original position until the bases of the posts (2) settle on the ground (S).

Description

[001] This descriptive report refers to a patent application for an invention for a structure mounted in a cultivation area using columns driven into the ground combined with (shorter) posts, which are in turn only set in the ground by their bases, and have upper passage slots for transverse and longitudinal cables directed downwards for fixing in the ground. The transverse cables receive curved arch beams, which are distributed to receive the respective polymeric film covering, tied side by side to each other, forming rows of covering to protect suspended hydroponic cultivation troughs. [002] The resulting structure is flexible, completely open so that when a gust of wind exerts its force against the domed covering of polymeric films over the beams, these carry the posts upwards, delimiting the upward path, in order to soften friction. After the gust passes, this covering assembly naturally returns to settle the posts by their bases on the ground, stabilizing the entire structure, in a unique spring-loaded (oscillating) "floating agricultural greenhouse" system. Technical comments [003] As shown in the image inserted as an example for the request to be described later as figure 1, greenhouses for growing plants are formed by rigid wooden structures properly anchored in the ground, intertwined at the top by beams. In addition, the benches for cultivation, extended longitudinally along the structure, are expensive (requiring quality wood and carpentry services), generally not being properly distributed for the optimized use of the planting area and, furthermore, not favoring the visualization of blockages in the irrigation system, etc. These problems were solved by the same inventor of the application to be described later, who holds patent BR102021007978-9 entitled “MACHINE FOR THE PRODUCTION OF PLASTIC MAT AND ASSEMBLY AS A SUSPENDED TROUGH FOR SEMI-HYDROPONIC CULTIVATION, IN A STRUCTURE ADAPTED FOR THE PRODUCTION OF VARIOUS CROPS”, granted on June 21, 2022, through dispatch 16.1 of RPI 2685, which protects a system of gutters kept suspended by small posts approximately 70 centimeters high, fixing, by crossbars, a polymeric mat specially developed for the project, which houses bags filled with the substrate where the seedlings are planted, receiving water and nutrients through an irrigation system for their development. Subject of the request [004] The inventor now almost completely reduces the rigidity of conventional wooden greenhouse structures, making them "floating," protecting the cultivation troughs (for example, the troughs of the type described in patent letter BR102021007978-9) by their flexible covering. This flexible structure or springy structure for plant cultivation will be detailed below. [005] Figures 1 and 2, as already explained, refer to what is known. [006] The following related figures, numbered 3 to 9, refer to the invention: Figure 3 - shows a properly measured cultivation area, which is delimited by a series of columns fixed in the ground, combined with posts (of lower height), only resting on the ground by their bases, all made of wood and equipped with slots at the top. The columns and posts are distributed in such a way as to form corridors for the installation of suspended cultivation troughs. As can be seen, cables are passed and directed through the slots, both transversely and longitudinally, which are stretched and tensioned below to anchors fixed in the ground, already flexibly structuring this wooden assembly, combining static pieces (columns) with pieces (posts) capable of being suspended from the ground; Figure 4 - shows a section of the assembled set of columns and posts. As shown in detail A, the posts have notches near their top for wire passage to secure them to the transverse cables. These transverse cables also contain delimiting cables to control the upward movement (under wind action) of the posts when the greenhouse is in use. These delimiting cables are also directed downwards and secured by anchors. The transverse cables also secure beams formed by curved, galvanized tubes, fixed through through holes at their ends, details B and C. These curved beams are distributed upwards, in a regularly spaced sequence along the longitudinal length of the column and post assembly; Figure 5 shows each sequence of curved beams receiving, in the longitudinal direction, the respective coating of perforated polymeric film with holes in the edges, reinforced laterally. Detail A is a photograph, inserted to better illustrate this covering; Figure 6 shows the curved beams already covered. As can be seen in detail A, the films corresponding to each row of beams are tied together along the longitudinal length of the greenhouse, along their reinforced edges. At their head edges, the films are pulled and directed towards the anchors fixed in the ground. Detail B is a photograph of the roof's fastening; Figure 7 - diagram showing a gust of wind hitting one side of the greenhouse, when