FR2478754A1

FR2478754A1 - Node joint demountable frame tubular members - uses segmental post collars to form split spigot with bolt which expands causing segments to grip post

Info

Publication number: FR2478754A1
Application number: FR8006301A
Authority: FR
Original assignee: Individual
Current assignee: Individual
Priority date: 1980-03-21
Filing date: 1980-03-21
Publication date: 1981-09-25
Also published as: FR2478754B1

Abstract

The node joint is used between the tubular metal posts (P) and rails (R) of storage racks and uses two or three piece post-collars (3) and spigot (4) fittings. Assembled spigots (4) have a central split with a hole (8) for a bolt, enlarging to wedge in a rail end as the bolt is screwed home, and simultaneously causing the collar segment to grip the post barrel. Collar segments may comprise one (3a), two (3b) or three quadrants of a round or a square ring with a demi-spigot (4) projecting perpendicularly or radially from each end. Internal spigot facers may be radial, the barrel being doubly conical (4a, 4b).

Description

I1 est connu selon le brevet 1.514.258 ( Fig 1 ) d'après (Fig 2) du brevet ci-dessus
Un raccord annulaire à plusieurs branches délimitant une cavité centrale, enveloppant sur tout son périmètre un tube poteau qui est susceptible d'être soumis à une expansion élastique par le serrage d'au moins une vis, montée dans un trou taraudé, prévu dans une partie angulaire du corps comprise entre deux tenons . Cette vis prend par son serrage, appui sur le tube poteau et permet au raccord par sa forme monobloc une expansion élastique, qui immobilise les tubes satellites perpendiculaires au tube poteau .A signaler que l'effet produit au serrage de la vis augmente la surface de la cavité centrale de ce raccord annulaire , et l'immobilisation de tout l'ensemble des tubes montés avec ce raccord sur le tube poteau n'est rendu possible qu'au moyen de la ou les vis
Le dispositif de montage selon l'invention ,..se distingue par quatre éléments mécaniques "modules" réf : A - B - C - D ( P1 2 et 3 )
Pour les tubes carrés : Fig (2~3-4-5)
Pour les tubes cylindriques : Fig (6-7-8-9) .I1 is known according to patent 1,514,258 (Fig 1) from (Fig 2) of the above patent
An annular connection with several branches delimiting a central cavity, enveloping over its entire perimeter a post tube which is liable to be subjected to elastic expansion by the tightening of at least one screw, mounted in a tapped hole, provided in a part body angle between two studs. This screw takes by its tightening, presses on the post tube and allows the connection by its one-piece form an elastic expansion, which immobilizes the satellite tubes perpendicular to the post tube. Note that the effect produced by the tightening of the screw increases the surface of the central cavity of this annular connection, and the immobilization of all of the tubes mounted with this connection on the post tube is only made possible by means of the screw (s)
The mounting device according to the invention, .. is distinguished by four mechanical "module" elements ref: A - B - C - D (P1 2 and 3)
For square tubes: Fig (2 ~ 3-4-5)
For cylindrical tubes: Fig (6-7-8-9).

La complémentarité de ces 4 modules (A-B-C-D) permet une très grande variété de compositions d'assemblages dans le choix de leur accouplement . I1 est possible sur un tube porteur d'assembler per pendiculairement entre eux 1 - 2 - 3 et même 4 tubes satellites
Les dessins perspectives (Fig 14 et 15 Y nous laissent entrevoir et envisager toutes leurs possibilités : emploi pratique, efficacité d'utilisation . Ils sont démontables et réutilisables à des montages de formes différentes , d'où leur grande fiabilité . C'est la configuration du montage qui détermine le choix d'accouplement parmi les 4 modules (A-B-C-D) servant à l'assemblage de tubes creux perpendiculairement entre eux (Fig 15)
Sur le plan (4) Fig (10) est décrit le principe d'utilisation de ces 4 modules . C'est l'assemblage d'un tube porteur (2) perpendiculairement à un tube satellite (1) avec les modules (A et B) .A l'intérieur du tube satellite sont engagés symétriquement opposés. les tenons (4) des modules (A et B ) dont les ailes (3) de chacun d'eux prennent sur sa partie externe le tube porteur (2) en tenaille et , lorsque le trou du tube satellite ( préalablement percé ) se trouve en face des gorges semi-cylindriques (5) de chaque tenon , opposée s l'une à l'autre , formant un logement cylindrique (8) expansible nous engageons un goujon , ou une vis au choix , pour provoquer I'ex- pansion des 2 tenons (4) qui , comprimés contre les parois intérieures du tube satellite (1) donnent un serrage efficace parachevé d'un verrouillage J en conséquence en (9) point de pivotement des modules , les ailes (3) des modules (A et 3) exercent en (10) une contre pression sur les parois extérieures du tube porteur , l'enserrant comme dans unétau . Cette immobilisation par serrages compensés ( interexter) des tubes (satellite et porteur ) découle des puissances de poussées opposées en (11) au niveau d'un point de pivotement (9) de dispositif présente l'avantage de ne créer aucune détérioration de surface sur les tubes porteurs . Le seul serrage consiste en un trou non débouchant sur le tube satellite qui reçoit intérieurement les tenons des modules à emboiter
La Fig (11) tubes carrés , Fig (13) tubes cylindriques , représentent les cas les plus significatifs de l'utilisation des 4 modules de base ( A-B-C-B) . The complementarity of these 4 modules (ABCD) allows a very wide variety of assembly compositions in the choice of their coupling. I1 is possible on a support tube to assemble per pendulum between them 1 - 2 - 3 and even 4 satellite tubes
The perspective drawings (Fig 14 and 15 Y allow us to glimpse and consider all their possibilities: practical use, efficiency of use. They are removable and reusable in assemblies of different shapes, hence their high reliability. This is the configuration of the assembly which determines the choice of coupling among the 4 modules (ABCD) used to assemble hollow tubes perpendicularly to each other (Fig 15)
On the plan (4) Fig (10) is described the principle of use of these 4 modules. It is the assembly of a carrier tube (2) perpendicular to a satellite tube (1) with the modules (A and B). Inside the satellite tube are engaged symmetrically opposite. the lugs (4) of the modules (A and B) whose wings (3) of each of them take on its external part the supporting tube (2) in pincers and, when the hole of the satellite tube (previously drilled) is opposite the semi-cylindrical grooves (5) of each tenon, opposite to each other, forming an expandable cylindrical housing (8) we engage a stud, or a screw of your choice, to cause expansion 2 studs (4) which, pressed against the interior walls of the satellite tube (1) provide effective tightening completed with a locking mechanism J accordingly (9) pivot point of the modules, the wings (3) of the modules (A and 3) exert in (10) a back pressure on the external walls of the support tube, enclosing it as in a vice. This immobilization by compensated tightening (interexter) of the tubes (satellite and carrier) results from the opposite thrust powers at (11) at a pivot point (9) of the device has the advantage of not creating any surface deterioration on the carrier tubes. The only tightening consists of a hole not opening on the satellite tube which internally receives the tenons of the modules to be fitted
The Fig (11) square tubes, Fig (13) cylindrical tubes, represent the most significant cases of the use of the 4 basic modules (ABCB).

La Fig (12) représente un cas spécial utilisable uniquement pour les tubes de sections carres Fig (12) represents a special case usable only for tubes with square sections

Claims

1 - Device for assembling hollow satellite tubes (1) on a carrier tube (2) consisting of a plurality of modules, four in number A -B -C - D - characterized in that each module, a one-piece mechanical part, includes a wing (3) external clamping element by compression> and a pin (4) internal clamping element by expansion

2 - Device according to claim 1, characterized in that the tenon (4) of elongated shape is provided with a flat surface, notched by a groove perpendicular (5) to the longitudinal axis, A relief (6) being defined on the opposite face to the flat face, which in its extension ends in a pronounced angular cut (7)

Fig 10 facilitating its introduction inside the satellite tube so that each stud penetrating element, coupled in symmetry to its double inside the satellite tube, the faces of these internal clamping elements, placed opposite the one of the other define by their groove (5) an expandable housing (8) intended to receive a stud which upon its introduction develops on the internal walls of the satellite tube a tightening by expansion

3 - Dassembly system according to the preceding claims intended for the assembly of satellite tubes on a carrier tube, AC reactivated in that it comprises 4 mechanical modules A -B- C-D

The module (D) is composed of a wing in (L) with two branches of equal length equipped at their end each with a tenon, which are positioned in symmetry with one another, inscribed in an angle at 900 the planar notched faces of their grooves facing outwards.

The module (B) is composed of a wing in (U) carrying a single tenon on a branch lateral to this wing. This same module (B) with 2 studs equipping each of the lateral branches, whose studs in extension of one another positioned symmetrically, the flat faces oriented with their groove outwards, represents the fourth stud (C).

The module (D) with one less post gives an exact replica of the module (A)

This module schematically has a W profile (4 D-type modules coupled around a support tube represent a four-pointed star)

4 - The assembly of a certain number of these 4 modules gives the possibility of fixing one, two, three or four satellite tubes (1) on a carrier tube (2)