BR202020026188U2 - CONSTRUCTIVE ARRANGEMENT APPLIED ON BEACH STRINGER - Google Patents

Abstract

The following summary for a utility model refers to the development of stringers (1 and 1a) used in the assembly of pallet racks, whose straight section format, with two overlapping plates at the top (2 and 2a) and two more concave creases (5 and 6) in the middle portion of the two larger sides and two more concave creases (7, 7a and 8, 8a) in the lower portion, which allows a reduction in the thickness of the spar, in view of its better performance for the function for which will be used.

Description

CONSTRUCTIVE ARRANGEMENT APPLIED ON BEACH STRINGER TECHNICAL FIELD

[001] The following descriptive report for a utility model refers to the development of a stringer used in the assembly of pallet racks, whose straight section format, with two overlapping plates at the top, allows an optimization in the thickness of the stringer, having in view of its best performance for the function which will be used.

STATE OF ART

[002] A pallet truck is a storage support capable of sustaining high loads. It works as an excellent storage structure, used in industries and warehouses to store heavy items and ensure organization.

[003] The pallet truck for use in heavy loads is made of resistant metal, with firm columns (which form the base of the structure) and stringers, which are equipped with flat metal levels that act as shelves.

[004] Normally, the stringers are tubes with a rectangular section that are attached to the ends of the columns to allow the assembly of the pallet truck.

[005] These stringers are not necessarily tubes, they admit other more technological construction forms. An example of this can be seen in document DE 102009001275 which describes a flat panel for a warehouse shelf, comprising two stringers (12, 14) with an upper support surface (34), arranged parallel to each other, and at least one transverse bar (24) which is mounted with each of its two ends on one of the stringers (12, 14), in which - a flat panel element (18) rests on the stringers (12, 14), characterized by - edge sections The longitudinal edges (30) bent down on the two longitudinal edges of the panel element (18) are each joined at the bottom edge with a grid rod (40) running in a longitudinal direction, the respective grid rod (40) being substantially applied to the outer side of the stringers (12, 14), - in the area of the square line around which the longitudinal edge sections (30) have been folded, square openings (32) are provided in the panel element (18), facing each other the other. Another two respective square openings (32) in the transverse direction of the panel element (18), and - at each end of the crossbars (24) a hook element (28) having a support leg (44) is provided on which it rests on the associated stringer (12, 14) and a free leg (46) extending downwards from the support leg (44) and bordering the outer side of the stringer (12, 14), each element of which is hooked (28) in an associated square opening (32).

TECHNIQUE PROBLEM

[006] The stringer described in DE 102009001275 is constructed from a metal sheet bent to form a tube, containing two overlapping parts bent in the upper portion of the stringer, which has two longitudinal concave friezes next to the overlapping of the plates in the upper part.

[007] The theory of bending is based on the principle of stiffening flat sheets through bending. In the case of steel, it is the protection of the flat plate, through the fold or crease made in it, that is, it is how rigid the flat plate can be made, after bending, without it having local buckling in a length limited to the section.

[008] This is exactly what was done on 102009001275. However, this fold is positioned at the top. In this way, the remainder of the lateral surface of the spar is subject to buckling forces.

PROPOSED SOLUTION

[009] Thus, due to considerations pertaining to the previously discussed state of the art, it is one of the objectives of the present utility model described below, to carry out improvements in the stringer used in the construction of pallet trucks, where the rigidity of the same was increased through the application of bending theory, including more rigidity elements in the spar.

DESCRIPTION

[010] The characterization of this utility model is done by means of representative figures of the constructive disposition applied in stringer, in such a way that the product can be fully reproduced by appropriate technique, allowing full characterization of the functionality of the claimed object.

[011] Based on the prepared figures that express the best way to carry out the product now idealized, the descriptive part of the report is based, through a detailed and consecutive numbering, where it clarifies aspects that may be implied by the adopted representation, in order to clearly determine the intended protection.

• - A FIGURA 1 ilustra um segmento de uma proposta de longarina;
• - A FIGURA 2 ilustra um segmento de outra proposta de longarina;
• - A FIGURA 3 ilustra um exemplo de longarina soldada ao conector para colunas; e
• - A FIGURA 4 ilustra outro exemplo de longarina aplicada em um conector para colunas metálicas de um portapaletes.

[012] These figures are merely illustrative, and may vary, as long as they do not deviate from what was initially claimed:

• - FIGURE 1 illustrates a segment of a stringer proposal;
• - FIGURE 2 illustrates a segment of another stringer proposal;
• - FIGURE 3 illustrates an example of a stringer welded to the column connector; It is
• - FIGURE 4 illustrates another example of a stringer applied to a connector for metallic columns of a pallet truck.

[013] A preferred embodiment of the stringers comprises a folded metal sheet forming the stringers (1 and 1a) with overlapping of the leftovers at the top (2 and 2a), containing two concave creases (3, 3a and 4, 4a) on the upper part next to the overlap, two concave creases (5 and 6) in the middle portion of the two larger sides and two more concave creases (7, 7a and 8, 8a) in the lower portion,

[014] The stringers (1 and 1a) are welded to the connectors (9 and 10) to form the pallet trucks.

• - Fabricada a partir de perfis, proporcionando uma ótima relação entre espessura de material e capacidade de carga;
• - Quatro ganchos por conector fornecem forma confiável e travamento de força para qualquer carga, seja leve ou pesada;
• - Excelente rigidez longitudinal da construção das estantes;
• - A instalação de soldagem totalmente automatizada garante que tolerâncias muito estreitas sejam observadas; e,
• - As vigas podem ser ajustadas em altura em um passo de 50 mm, permitindo uma adaptação ideal às alturas de carregamento.

[015] With these modifications, the proposed spar has the following qualities:

• - Manufactured from profiles, providing an optimal ratio between material thickness and load capacity;
• - Four hooks per connector provide reliable shape and locking strength for any load, whether light or heavy.
• - Excellent longitudinal rigidity of the shelving construction;
• - Fully automated welding facility ensures very tight tolerances are observed; It is,
• - The beams can be adjusted in height in a 50 mm step, allowing optimal adaptation to loading heights.

Claims (2)

CONSTRUCTIVE ARRANGEMENT APPLIED ON A STRINGER, characterized by comprising a folded metal sheet forming the stringer (1 and 1a) with overlapping of the leftovers at the top (2 and 2a), containing two concave creases (3, 3a and 4, 4a) at the top next to the overlap, two concave creases (5 and 6) in the middle portion of the two larger sides and two more concave creases (7, 7a and 8, 8a) in the lower portion. CONSTRUCTIVE ARRANGEMENT APPLIED ON A STRINGER, according to claim 1 and characterized in that the struts (1 and 1a) are applied to the connectors (9 and 10) for the formation of the pallet trucks.

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