PT102205B

PT102205B - PLASTIC COVERING AUTO LUBRICANT

Info

Publication number: PT102205B
Application number: PT10220598A
Authority: PT
Inventors: Antonio Francisco Febra
Original assignee: Antonio Francisco Febra
Priority date: 1998-09-25
Filing date: 1998-09-25
Publication date: 2002-01-30
Also published as: PT102205A

Abstract

Self-lubricating plastic sheathing, used especially in paving slabs, of square or rectangular configuration, self-locking 1, using no nails, easy to assemble and transport. Stable thanks to the joints 2 of the support structure, it offers great safety. It is made of any polymer and can be self-lubricating, which allows an easier stripping and no sticking of the concrete, and furthermore it is lighter than the materials used today and just as strong as they are. <IMAGE>

Description

“Cofragem plástica auto-lubrificante”“Self-lubricating plastic formwork”

A presente invenção refere-se a uma cofragem de plástico, em particular, a uma cofragem de plástico autolubrificante, para substituição das cofragens tradicionais feitas tábuas de pinho, ou outros materiais, e pregos, utilizadas na construção civil, com evidentes vantagens de custos e operacionalidade.The present invention relates to a plastic formwork, in particular, a self-lubricating plastic formwork, to replace traditional formwork made of pine boards, or other materials, and nails, used in civil construction, with evident cost advantages and operability.

A cofragem de acordo com o invento tem as características indicadas nas reivindicações 1 a 7.The formwork according to the invention has the characteristics indicated in claims 1 to 7.

A Fig. 1 mostra um corte parcial e um outro corte da cofragem de acordo com o invento e dois pormenores ampliados da mesma.Fig. 1 shows a partial section and another section of the formwork according to the invention and two enlarged details thereof.

A Fig. 2 mostra parcialmente um outro corte da cofragem da Fig. 1, tendo montados perfis de reforço.Fig. 2 partially shows another section of the formwork of Fig. 1, with reinforcement profiles mounted.

A Fig. 3 mostra em perspectiva isomêtrica por cima de uma cofragem parcialmente montada de acordo a Fig. 1.Fig. 3 shows in isometric view over a partially assembled formwork according to Fig. 1.

A Fig. 4 mostra em perspectiva isomêtrica por debaixo da cofragem parcialmente montada da Fig. 1.Fig. 4 shows in isometric view under the partially assembled formwork of Fig. 1.

A Fig. 5 mostra em perspectiva isomêtrica por cima de uma prancha de cofragem utilizada na cofragem da Fig. 1.Fig. 5 shows in isometric view over a formwork board used in the formwork of Fig. 1.

A Fig. 6 mostra em perspectiva isomêtrica por debaixo de uma prancha de cofragem utilizada na cofragem da Fig. 1.Fig. 6 shows in isometric perspective under a formwork board used in the formwork of Fig. 1.

A Fig. 7 mostra em perspectiva isomêtrica anterior de um esquadro utilizado na cofragem da Fig. 1.Fig. 7 shows in front isometric view of a square used in the formwork of Fig. 1.

A Fig. 8 mostra em perspectiva isomêtrica posterior de um esquadro utilizado na cofragem da Fig. 1.Fig. 8 shows in a posterior isometric view of a square used in the formwork of Fig. 1.

As Figs. 1 e 2 mostram a cofragem de acordo com a invenção parcialmente montada, a qual quando totalmente montada pode tomar as formas quadrada ouFigs. 1 and 2 show the formwork according to the partially assembled invention, which when fully assembled can take the form of square or

98/ rectangular em secção transversal, e na qual se torna desnecessário a utilização de pregos ou dispositivos de fixação semelhantes, devido à existência dos seus encaixes macho/fêmea 1 nas pranchas de cotragem A.98 / rectangular in cross section, and in which the use of nails or similar fixing devices becomes unnecessary, due to the existence of their male / female grooves 1 in the formwork planks A.

A cofragem é composta por diversas pranchas de cofragem A, sendo tornada estática por meio de perfis de reforço 3, que correm em encaixes definidos na face oposta à face lisa das pranchas de cofragem A, constituindo os perfis de reforço 3 uma estrutura de suporte, como é tradicional.The formwork is composed of several formwork boards A, being made static by means of reinforcement profiles 3, which run in defined grooves on the face opposite to the smooth face of the formwork boards A, the reinforcement profiles 3 constituting a support structure, as is traditional.

As pranchas de cofragem A apresentam uma parede lisa num dos seus lados a qual é reforçada no lado oposto por uma estrutura reticulada de faixas finas de reforço 2 e 4, a qual pode apresentar diversas configurações, e na qual são descarregados os esforços exercidos nas pranchas de cofragem A .The formwork planks A have a smooth wall on one side which is reinforced on the opposite side by a reticulated structure of thin reinforcement strips 2 and 4, which can have different configurations, and in which the efforts exerted on the planks are unloaded. formwork.

A cofragem utiliza como matéria-prima o plástico (qualquer tipo de polímero). Devido ao facto do betão não aderir facilmente aos plásticos, a descofragem é fácil. De modo a facilitar ainda mais a descofragem está prevista a utilização de polímeros autolubrificantes. Além disso, cofragem é muito leve o que facilita o seu transporte, é mais barata do que a cofragem utilizada actualmente, sendo totalmente reciclável.The formwork uses plastic (any type of polymer) as raw material. Due to the fact that concrete does not adhere easily to plastics, stripping is easy. In order to further facilitate stripping, the use of self-lubricating polymers is foreseen. In addition, formwork is very light which facilitates its transport, it is cheaper than the formwork used today, being completely recyclable.

Os acabamentos laterais da cofragem são feitos por meio de esquadros de plástico 5, fixos ou móveis, de fácil aplicação, que apresentam zonas de encaixe anti-derrapantes 6, 6’, e as quais são também de fácil aplicação e montagem. A zona de encaixe 6 tem a forma de um gancho e a zona de encaixe é constituída por orifícios existentes na aba do esquadro 5 e por pernos de plástico, os quais são encaixados nos encaixes 1.The side finishes of the formwork are made using plastic brackets 5, fixed or mobile, easy to apply, which have non-slip fitting areas 6, 6 ’, which are also easy to apply and assemble. The locking zone 6 is in the form of a hook and the locking zone consists of holes in the flange of the square 5 and plastic pins, which are fitted into the locks 1.

Devido à leveza das peças que compõem a cofragem, é possível a montagem no solo de grandes painéis e a sua posterior elevação e montagem no local, com o auxílio dos ganchos de suporte 7, dispostos regularmente no lado posterior das pranchas de cofragem A.Due to the lightness of the parts that make up the formwork, it is possible to mount large panels on the ground and then raise and assemble them on site, with the support hooks 7, regularly arranged on the rear side of the formwork A.

Lisboa, ·> 25. 5EX ' <Lisbon, ·> 25. 5EX '<

Por ANTÓNIO FRANCISCO FEBRABy ANTÓNIO FRANCISCO FEBRA

I.· ANTÓNIO JOAOI. · ANTÓNIO JOAO

DA CUNHA FERREIRA Ag. Oj. Pr. Ind.DA CUNHA FERREIRA Ag. Oj. Pr. Ind.

Sus das Flores, 74 - 4.’ 1200 LISBOASus das Flores, 74 - 4. ’1200 LISBON

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1/21/2

Claims

1 - Plastic formwork, characterized by comprising light weight formwork boards (A), which are assembled together by means of male / female fittings (1), in order to form panels, which for forming the formwork of square or rectangular section, they are assembled by means of side formwork boards (A) and squares (5) fitted to said side formwork boards (A), using reinforcement profiles (3), which are fitted into fittings opposite the smooth wall of the formwork planks, for reinforcing and consolidating the formwork.

2 - Plastic formwork according to claim 1, characterized in that any type of self-lubricating polymer is used as raw material.

Plastic formwork according to claims 1 and 2, characterized in that the formwork boards (A) comprise a smooth wall on one of its sides, which is reinforced on the opposite side by a lattice structure of thin reinforcement strips (2 and 4), which can have different configurations, and in which the efforts exerted on the formwork boards (A) are unloaded.

Plastic formwork according to claims 1 to 3, characterized in that the formwork boards (A) comprise male / female fittings (1), which are used for their assembly and hooks (7), which are used for their assembly. lifting and as fittings for the reinforcement profiles (3).

Plastic formwork according to any of the preceding claims, characterized in that the reinforcement profiles (3) run in defined grooves in the lattice structure of thin reinforcement strips (2 and 4) and in the hooks (7).

Plastic formwork according to claim 1, characterized in that the brackets (5) are fixed to the formwork by fitting, with their fitting parts having non-slip zones (6).

7 - Plastic formwork according to the previous claims, characterized in that the formwork boards (A) can be assembled in large

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2/2 panels, which are subsequently placed in their working positions, being used for this purpose the hooks (7).