EP2322421B1 - Stanchion for supporting, bearing and/or stabilizing an assembly or a structure and method for adjusting the length and locking such a stanchion at said length - Google Patents

Stanchion for supporting, bearing and/or stabilizing an assembly or a structure and method for adjusting the length and locking such a stanchion at said length Download PDF

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Publication number
EP2322421B1
EP2322421B1 EP20100189444 EP10189444A EP2322421B1 EP 2322421 B1 EP2322421 B1 EP 2322421B1 EP 20100189444 EP20100189444 EP 20100189444 EP 10189444 A EP10189444 A EP 10189444A EP 2322421 B1 EP2322421 B1 EP 2322421B1
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EP
European Patent Office
Prior art keywords
tubular element
tubular
notch
lug
stanchion
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EP20100189444
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German (de)
French (fr)
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EP2322421A1 (en
Inventor
Christophe Requier
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Nauti Park
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Nauti Park
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C5/00—Equipment usable both on slipways and in dry docks
    • B63C5/02—Stagings; Scaffolding; Shores or struts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C5/00—Equipment usable both on slipways and in dry docks
    • B63C5/02—Stagings; Scaffolding; Shores or struts
    • B63C2005/022—Shores or struts, e.g. individual oblique support elements for stabilizing hulls in dry-docks

Definitions

  • the present invention relates to a strut including support, support and / or stabilization of construction or structure, such as a boat hull dry and a method of adjustment in length and locking at the length of the support body of a forestay of the aforementioned type.
  • such struts comprise a support body formed of two tubular elements adapted to be mounted telescopically interlocked and retained in at least one predetermined axial position by means of pin-type locking means.
  • at least one of the tubular elements is provided with a series of axially offset lights, any one of said lights of said element being positionable facing the light of another tubular element to form a passageway.
  • introducing a pin which, in the state introduced into said lumens, retains the tubular elements in a predetermined axial position corresponding to the length chosen for the support body of the strut.
  • the disadvantage of such a solution lies in the risk of loss or inadvertent removal of the pin of its housing.
  • a strut comprising at least one support body provided at its lower end with a base, the support body being formed of at least two tubular elements adapted to being telescopically engaged and retained in at least one predetermined axial position by means of locking means, said locking means between two tubular elements of the support body, in the at least partially fitted state of said tubular elements being means bayonet type locking formed at least by at least one non-retractable lug and at least one notch carried respectively one, by one of the tubular elements, the other by the other of said tubular elements, said locking means being adapted to move from an unlocked position to a locked position in which the or at least one of the lugs of one of the tubular elements is inserted in said or at least one of the notches of the other tubular element and vice versa, by simple relative displacement at least in rotation of said tubular elements.
  • tubular elements of the support body have a circular cross section so that it is necessary for one of the tubular elements to have a longitudinal slot for axial relative displacement of said tubular elements together. This slot reduces the mechanical strength of said element and complicates its implementation.
  • An object of the present invention is therefore to provide a lengthwise adjustable stay whose design avoids any loss of the locking means of the tubular elements constituting the support body between them.
  • Another object of the present invention is to provide an adjustable stay in length whose design allows on the one hand, the realization at a reduced cost of the locking means without weakening the mechanical strength of the support body constituting the strut, on the other hand, an increase in the reliability of the operation of the locking means.
  • the subject of the invention is a strut, in particular for the support, the support and / or the stabilization of construction or structure, such as a hull of a ship that has been put to dry, said strut comprising at least one body support member provided at its lower end with a base, the support body being formed of at least two tubular elements adapted to be mounted telescopically interlocking and retained in at least one predetermined axial position by means of locking means, said locking means between two tubular members of the support body, in the at least partially fitted state of said tubular elements being bayonet-type locking means formed by at least one non-retractable lug and at least one notch respectively carried one, by one of the tubular elements, the other, by the other of said tubular elements, said locking means being able to pass from a position of locked in a locked position in which the or at least one of the lugs of one of the tubular elements is inserted in the said or at least one of the notches of the other tubular element and vice versa,
  • the realization of the locking means in the form of non-retractable elements allows on the one hand, to overcome springs or other parts useful complexes in the case of retractable lugs, on the other hand to allow, by simple relative displacement at least angular of the tubular elements, by rotation about their longitudinal axis, the transition from the unlocked position to the locked position and vice versa. locking means.
  • any risk of malfunction as could be the case of a retractable lug in the event of a defective spring, or impossibility of operation, as would be the case when the pin is lost, is excluded.
  • the realization of the tubular elements of the support body with a cross section of different shape from one tubular element to another allows to have an unlocked position in which the lug or lugs of one of the tubular elements are arranged in the space left free between the tubular walls of said tubular elements in the at least partially fitted state of said tubular elements.
  • This space left free results from the non-complementarity of the shapes of the cross sections of the tubular elements.
  • the lugs are thus disposed outside the notches so that axial relative displacement of the tubular elements between them is possible until a predetermined axial relative position of said tubular elements is selected from among a plurality of relative positions. predetermined axes.
  • the, or at least one of, the lugs affects the shape of a stud or external radial projecting nipple of the tubular element which carries it and the or at least one of the notches affects the shape of a light, preferably notched, formed in the tubular wall of the tubular element which carries it.
  • At least one of the lights, preferably each light, is delimited by a closed line.
  • the tubular ground support element provided with a base of the support body of the forestay, said lower tubular element, is a tubular element with a polygonal cross section and the tubular element, said
  • the upper, telescopically interlocking fitting in the lower tubular element is a tubular element with a circular cross-section, the upper tubular element being preferably inscribed in the lower tubular element.
  • the locking means form with the tubular element which carries them an inguermontable assembly.
  • the tubular element which carries them an inguermontable assembly.
  • the two tubular elements or at least two of the tubular elements of the support body comprise one, at least two lugs, the other, at least two circumferentially opposite notches, the lugs of the pair or one pairs of the tubular bearing-pin members being adapted to each insert, simultaneously, within a notch of the or a pair of circumferentially opposite notches of the tubular element-notches when passing from the unlocked position to the locked position of said tubular elements together.
  • each tubular element of the support body comprises, for its telescopic interlocking fitting with at least one other tubular element, an interlocking zone able to be at least partially covered by another tubular element. and / or an interlocking zone capable of covering at least partially another tubular element, the lug or lugs are arranged in the interlocking zone of said tubular element capable of being covered at least partially by another tubular element and the one or more notches are arranged in the interlocking zone of said tubular element capable of covering at least partially another tubular element.
  • tubular elements of the support body are able to be retained by means of the locking means in a predetermined axial position selected from a plurality of predetermined axial positions corresponding to each a length of said support body
  • at least one of the tubular elements of the support body, adapted to be mounted telescopically interlocking with another tubular element is equipped, in its interlocking zone, capable of covering at least partially another tubular element, a series of notches axially offset along said element, each stage of notches being formed of a single notch or at least two notches arranged circumferentially opposite on said tubular element.
  • the invention also relates to a method of length adjustment and locking the length of the support body of a forestay of the aforementioned type, said support body, provided at its lower end with a base, being formed of at least one lower tubular support element on the ground inside which is mounted telescopically a higher tubular element, said upper tubular element being able to be retained with respect to said lower tubular element in at least one axial position predetermined by through locking means formed at least by at least one notch and at least one lug carried respectively one, by the lower tubular element, the other by the upper tubular element, said lug of the upper tubular element being adapted to fit into the notch of the lower tubular element, characterized in that said method comprises at least one sliding axial displacement step of the upper tubular element in the lower tubular element to a position in which the or at least one of the non-retractable lugs of the upper tubular element is positioned at the same level as the or at least one selected notch of the lower tubular element, pin and notch being, during this
  • the transition from the unlocked position to the locked position and vice versa is facilitated and safe since it requires only a relative displacement of the tubular elements between them.
  • the strut 1, object of the invention is more particularly intended for support, support and / or stabilization of construction or structure, such as a boat hull dry .
  • This strut 1 comprises a support body 2 made in the form of an elongate body 2 and provided at its lower end with a base 3 made in one piece or attached to the support body 2, this base being fixedly mounted or orientable relative to said body.
  • the base 3 has the shape of a fixed circular plate mounted at one end, in this case the lower end of the support body.
  • the upper end of the support body 2 may be provided with a pad against which supports the construction or structure to be supported.
  • the support body 2 is formed of at least two tubular elements 4, 5 capable of being mounted telescopically interlocked and retained in at least one predetermined axial position via locking means 6. In the axial retention position, the axial displacement of the tubular elements is limited within a predetermined axial range of displacement.
  • the locking means 6 are of the bayonet type. They are formed at least by at least one non-retractable lug 7 and at least one notch 8 carried respectively one 7, by one 4 of the tubular elements, the other 8, by the other 5 of said elements 4, 5 tubular.
  • the locking means 6 are able to pass, by simple relative displacement of the tubular elements, from an unlocked position to a locked position in which the or at least one of the lugs 7 of one of the tubular elements is inserted in said or at least one of the notches 8 of the other tubular element and vice versa.
  • This passage from the unlocked position to the locked position is effected by simple relative displacement of said tubular elements 4, 5 in rotation about their longitudinal axis, this relative displacement in rotation being supplemented if necessary by a relative axial displacement of said tubular elements.
  • a simple relative displacement in rotation about their longitudinal axis of the tubular elements between them may be sufficient to move from a locked position to an unlocked position or vice versa from an unlocked position to a locked position while in some embodiments, it is necessary to proceed on the one hand to a relative displacement in rotation, on the other hand, to a relative axial displacement of said tubular elements to allow the transition from the locked position to the unlatched position and vice versa, it being understood that the unlocked position corresponds to a position in which the lug or lugs are arranged outside the notch or notches while the locked position corresponds to a position in which the lug or at least the lug one of the lugs is disposed inside a notch.
  • said strut of the type in which the tubular elements 4, 5 of the support body 2 are able to be retained via the locking means 6 in a predetermined axial position selected from a plurality of predetermined axial positions.
  • the support body 2 is formed of two tubular elements 4, 5 mounted telescopically interlocking, namely a lower tubular member 5, provided with a support base within which is mounted telescopically interlocking an upper tubular member 4.
  • the upper tubular member 4 carries one or more lugs 7 while the lower tubular member 5 generally carries a plurality of notches axially offset along said member. Any of the notches of this alignment of notches is adapted to cooperate with a lug of the upper tubular element so as to allow, in the inserted state of the lug 7 in the notch 8, an axial retention of the upper tubular element in a predetermined axial position relative to the lower tubular element, this retention corresponding to the desired length of the support body.
  • the support body 2 could equally have a number of tubular elements greater than two.
  • notches and lugs act in pairs.
  • the lower tubular element 5, provided with a base 2 of support body is equipped, in its interlocking zone capable of covering at least partially another tubular element, said element upper tubular, a series of notches axially offset along said element, each step of notches of said series being formed of two notches arranged circumferentially opposite on the tubular element, in this case on two opposite sides of the lower tubular element which has a quadrangular cross section.
  • Each notch 8 is formed by an oblong slot delimited by a closed line.
  • This oblong slot is oriented transversely to the longitudinal axis of the tubular element which carries it.
  • This light is directly formed in the tubular wall of the tubular element which carries it for example by drilling said wall.
  • One of the transverse edges of this light is therefore able to form an abutment against which the lug comes into abutment in the end position of said lug during the angular displacement of the tubular lug-holder element by the passage of the position unlocked at the position locked.
  • One of the longitudinal edges of said light preferably the lower longitudinal edge of this light, is provided with a notch whose role will be described below.
  • the upper tubular element 4 is equipped, in its interlocking zone capable of being covered at least partially by another tubular element, in this instance by the lower tubular element, with at least two spurs 7 arranged in a circumferentially opposite manner on said tubular member.
  • the lugs of the pair or one of the pairs of lugs of the tubular element 4 holding lugs each simultaneously fit inside a notch 8 of the or a pair of circumferentially opposite notches of the tubular ratchet member.
  • the upper tubular element could have, in its interlocking zone capable of being covered at least partially by another tubular element, a series of lugs offset axially along said body to increase the resistance of the assembly. in locked position.
  • the tubular ground support member provided with a support 3 of the strut, said lower tubular element is a tubular element with a polygonal cross section and the tubular element 4 , which can be telescopically fitted into the lower tubular element, is a tubular element with a circular cross-section, the upper tubular element 4 being preferably inscribed in the lower tubular element.
  • the lower tubular member is a square or rectangular section member, the notches being provided on at least one of the faces, preferably two opposite parallel faces of said tubular member.
  • the upper tubular element 4 is a circular section element, the lugs being arranged diametrically opposite and radially external projection on the tubular wall of said element 4.
  • the length adjustment of the support body is therefore as follows.
  • the upper tubular element is slidably introduced into the lower tubular element with a relative angular position of the tubular elements such that the lugs of the upper tubular element extend along a diagonal of the tubular wall of the element. tubular lower so as not to hinder the relative axial displacement of the tubular elements together.
  • the upper tubular element is rotated about its longitudinal axis by said rotation. quarter turn to a position in which the lug or lugs of said upper tubular member fit into the notch or notches at the same level of the lower tubular member, as illustrated by the passage of the figure 2 to the figure 3 .
  • the upper tubular element In this position, the upper tubular element, once released by the operator, tends, under the effect of its own weight, to move axially to allow the lug to be housed in a notch in the edge lower longitudinal of the light constituting the notch so that any inadvertent unlocking by simple rotation of the upper tubular element in an opposite direction is prevented without having previously raised said upper tubular element to allow the exit of the pin of the notch in the light.
  • the light here has the general shape of a keyhole.
  • the transition from the locked position to the unlocked position it is therefore necessary, for the transition from the locked position to the unlocked position to move axially, in this case to raise the upper tubular element to allow the exit of the lug from the notch before causing a displacement to rotating the upper tubular element relative to the lower tubular element to allow the output of the pin of said light.
  • the unlocking operation that is to say once the lug out of the notch
  • the relative axial displacement of the tubular elements can allow to select a new locking position corresponding to another length of the support body. Axial restraint said tubular element between them in this new axial position of the tubular elements operates as mentioned above.
  • the notch may be removed so that the transition from the locked position to the unlocked position or vice versa is effected by simple relative rotational movement of the tubular elements.

Description

La présente invention concerne un étai notamment pour le soutien, l'appui et/ou la stabilisation de construction ou de structure, telle qu'une coque de bateau mise à sec ainsi qu'un procédé d'ajustement en longueur et de verrouillage à la longueur du corps de soutien d'un étai du type précité.The present invention relates to a strut including support, support and / or stabilization of construction or structure, such as a boat hull dry and a method of adjustment in length and locking at the length of the support body of a forestay of the aforementioned type.

Des étais, en particulier pour le soutien de coque de bateau mis à sec, sont notamment connus à travers le brevet US-4.792.130 . Traditionnellement, de tels étais comprennent un corps de soutien formé de deux éléments tubulaires aptes à être montés à emboîtement télescopique et retenus dans au moins une position axiale prédéterminée par l'intermédiaire de moyens de verrouillage du genre goupille. A cet effet, au moins l'un des éléments tubulaires est muni d'une série de lumières décalées axialement, l'une quelconque desdites lumières dudit élément étant positionnable en regard de la lumière d'un autre élément tubulaire pour former un passage d'introduction d'une goupille qui, à l'état introduit dans lesdites lumières, retient les éléments tubulaires dans une position axiale prédéterminée correspondant à la longueur choisie pour le corps de soutien de l'étai. L'inconvénient d'une telle solution réside dans les risques de perte ou d'enlèvement intempestif de la goupille de son logement.Stays, in particular for the support of boat hulls put to dry, are known in particular through the patent US 4792130 . Traditionally, such struts comprise a support body formed of two tubular elements adapted to be mounted telescopically interlocked and retained in at least one predetermined axial position by means of pin-type locking means. For this purpose, at least one of the tubular elements is provided with a series of axially offset lights, any one of said lights of said element being positionable facing the light of another tubular element to form a passageway. introducing a pin which, in the state introduced into said lumens, retains the tubular elements in a predetermined axial position corresponding to the length chosen for the support body of the strut. The disadvantage of such a solution lies in the risk of loss or inadvertent removal of the pin of its housing.

Il est également connu à travers le document US 3,469,870 qui est considéré comme l'art antérieur le plus proche de la revendication 1, un étai comprenant au moins un corps de soutien muni à son extrémité inférieure d'un piètement, le corps de soutien étant formé d'au moins deux éléments tubulaires aptes à être montés à emboîtement télescopique et retenus dans au moins une position axiale prédéterminée par l'intermédiaire de moyens de verrouillage, lesdits moyens de verrouillage entre deux éléments tubulaires du corps de soutien, à l'état au moins partiellement emboîté desdits éléments tubulaires étant des moyens de verrouillage du type à baïonnette formés au moins par au moins un ergot non escamotable et au moins un cran portés respectivement l'un, par l'un des éléments tubulaires, l'autre, par l'autre desdits éléments tubulaires, lesdits moyens de verrouillage étant aptes à passer d'une position déverrouillée à une position verrouillée dans laquelle le ou au moins l'un des ergots de l'un des éléments tubulaires est inséré dans ledit ou au moins l'un des crans de l'autre élément tubulaire et inversement, par simple déplacement relatif au moins en rotation desdits éléments tubulaires. Dans cet étai, les éléments tubulaires du corps de soutien présentent une section transversale circulaire de sorte qu'il est nécessaire que l'un des éléments tubulaires présente une fente longitudinale pour un déplacement relatif axial desdits éléments tubulaires entre eux. Cette fente réduit la résistance mécanique dudit élément et complexifie sa réalisation.He is also known throughout the document US 3,469,870 which is considered as the prior art closest to claim 1, a strut comprising at least one support body provided at its lower end with a base, the support body being formed of at least two tubular elements adapted to being telescopically engaged and retained in at least one predetermined axial position by means of locking means, said locking means between two tubular elements of the support body, in the at least partially fitted state of said tubular elements being means bayonet type locking formed at least by at least one non-retractable lug and at least one notch carried respectively one, by one of the tubular elements, the other by the other of said tubular elements, said locking means being adapted to move from an unlocked position to a locked position in which the or at least one of the lugs of one of the tubular elements is inserted in said or at least one of the notches of the other tubular element and vice versa, by simple relative displacement at least in rotation of said tubular elements. In this stay, the tubular elements of the support body have a circular cross section so that it is necessary for one of the tubular elements to have a longitudinal slot for axial relative displacement of said tubular elements together. This slot reduces the mechanical strength of said element and complicates its implementation.

Un but de la présente invention est donc de proposer un étai ajustable en longueur dont la conception permet d'éviter toute perte des moyens de verrouillage des éléments tubulaires constitutifs du corps de soutien entre eux.An object of the present invention is therefore to provide a lengthwise adjustable stay whose design avoids any loss of the locking means of the tubular elements constituting the support body between them.

Un autre but de la présente invention est de proposer un étai ajustable en longueur dont la conception permet d'une part, la réalisation à un coût réduit des moyens de verrouillage sans affaiblissement de la résistance mécanique du corps de soutien constitutif de l'étai, d'autre part, une augmentation de la fiabilité du fonctionnement des moyens de verrouillage.Another object of the present invention is to provide an adjustable stay in length whose design allows on the one hand, the realization at a reduced cost of the locking means without weakening the mechanical strength of the support body constituting the strut, on the other hand, an increase in the reliability of the operation of the locking means.

A cet effet, l'invention a pour objet un étai, notamment pour le soutien, l'appui et/ou la stabilisation de construction ou de structure, telle qu'une coque de bateau mise à sec, ledit étai comprenant au moins un corps de soutien muni à son extrémité inférieure d'un piètement, le corps de soutien étant formé d'au moins deux éléments tubulaires aptes à être montés à emboîtement télescopique et retenus dans au moins une position axiale prédéterminée par l'intermédiaire de moyens de verrouillage, lesdits moyens de verrouillage entre deux éléments tubulaires du corps de soutien, à l'état au moins partiellement emboîté desdits éléments tubulaires étant des moyens de verrouillage du type à baïonnette formés au moins par au moins un ergot non escamotable et au moins un cran portés respectivement l'un, par l'un des éléments tubulaires, l'autre, par l'autre desdits éléments tubulaires, lesdits moyens de verrouillage étant aptes à passer d'une position déverrouillée à une position verrouillée dans laquelle le ou au moins l'un des ergots de l'un des éléments tubulaires est inséré dans ledit ou au moins l'un des crans de l'autre élément tubulaire et inversement, par simple déplacement relatif au moins en rotation desdits éléments tubulaires,
caractérisé en ce que les éléments tubulaires du corps de soutien présentent des sections transversales de forme différente d'un élément tubulaire à un autre.For this purpose, the subject of the invention is a strut, in particular for the support, the support and / or the stabilization of construction or structure, such as a hull of a ship that has been put to dry, said strut comprising at least one body support member provided at its lower end with a base, the support body being formed of at least two tubular elements adapted to be mounted telescopically interlocking and retained in at least one predetermined axial position by means of locking means, said locking means between two tubular members of the support body, in the at least partially fitted state of said tubular elements being bayonet-type locking means formed by at least one non-retractable lug and at least one notch respectively carried one, by one of the tubular elements, the other, by the other of said tubular elements, said locking means being able to pass from a position of locked in a locked position in which the or at least one of the lugs of one of the tubular elements is inserted in the said or at least one of the notches of the other tubular element and vice versa, by simple relative movement at least in rotation of said tubular elements,
characterized in that the tubular members of the support body have cross sections of different shape from one tubular member to another.

La réalisation des moyens de verrouillage sous forme d'éléments non escamotables, c'est-à-dire fixes ou stationnaires par rapport à l'élément tubulaire qui les porte, permet d'une part, de s'affranchir de ressorts ou autres pièces complexes utiles dans le cas d'ergots escamotables, d'autre part d'autoriser, par simple déplacement relatif au moins angulaire des éléments tubulaires, par rotation autour de leur axe longitudinal, le passage de la position déverrouillée à la position verrouillée et inversement des moyens de verrouillage. Ainsi, tout risque de dysfonctionnement, comme cela pourrait être le cas d'un ergot escamotable en cas de ressort défectueux, ou d'impossibilité de fonctionnement, comme cela serait le cas lors d'une perte de la goupille, est exclu.The realization of the locking means in the form of non-retractable elements, that is to say fixed or stationary relative to the tubular element which carries them, allows on the one hand, to overcome springs or other parts useful complexes in the case of retractable lugs, on the other hand to allow, by simple relative displacement at least angular of the tubular elements, by rotation about their longitudinal axis, the transition from the unlocked position to the locked position and vice versa. locking means. Thus, any risk of malfunction, as could be the case of a retractable lug in the event of a defective spring, or impossibility of operation, as would be the case when the pin is lost, is excluded.

La réalisation des éléments tubulaires du corps de soutien avec une section transversale de forme différente d'un élément tubulaire à un autre permet de disposer d'une position déverrouillée dans laquelle le ou les ergots de l'un des éléments tubulaires sont disposés dans l'espace laissé libre entre les parois tubulaires desdits éléments tubulaires à l'état au moins partiellement emboîté desdits éléments tubulaires. Cet espace laissé libre résulte de la non complémentarité des formes des sections transversales des éléments tubulaires. En position déverrouillée, les ergots sont donc disposés à l'extérieur des crans de sorte qu'un déplacement relatif axial des éléments tubulaires entre eux est possible jusqu'à sélection d'une position relative axiale prédéterminée desdits éléments tubulaires parmi une pluralité de positions relatives axiales prédéterminées. Une fois la position relative axiale prédéterminée sélectionnée, il suffit de provoquer un déplacement relatif angulaire par entraînement en rotation autour de leur axe longitudinal des éléments tubulaires pour amener l'ergot dans le cran et assurer une retenue axiale desdits éléments tubulaires entre eux à l'intérieur d'une plage axiale de déplacement prédéterminée.The realization of the tubular elements of the support body with a cross section of different shape from one tubular element to another allows to have an unlocked position in which the lug or lugs of one of the tubular elements are arranged in the space left free between the tubular walls of said tubular elements in the at least partially fitted state of said tubular elements. This space left free results from the non-complementarity of the shapes of the cross sections of the tubular elements. In the unlocked position, the lugs are thus disposed outside the notches so that axial relative displacement of the tubular elements between them is possible until a predetermined axial relative position of said tubular elements is selected from among a plurality of relative positions. predetermined axes. Once the predetermined axial relative position has been selected, it suffices to cause an angular relative displacement by rotationally driving about their longitudinal axis of the tubular elements to bring the lug into the notch and to ensure axial retention of said tubular elements to each other. within an axial range of predetermined displacement.

Généralement, le, ou au moins l'un des, ergots affecte la forme d'un plot ou téton en saillie radiale externe de l'élément tubulaire qui le porte et le ou au moins l'un des crans affecte la forme d'une lumière, de préférence à encochage, ménagée dans la paroi tubulaire de l'élément tubulaire qui le porte.Generally, the, or at least one of, the lugs affects the shape of a stud or external radial projecting nipple of the tubular element which carries it and the or at least one of the notches affects the shape of a light, preferably notched, formed in the tubular wall of the tubular element which carries it.

De préférence, au moins l'une des lumières, de préférence chaque lumière, est délimitée par une ligne fermée.Preferably, at least one of the lights, preferably each light, is delimited by a closed line.

Dans un mode de réalisation préféré, l'élément tubulaire d'appui au sol muni d'un piétement du corps de soutien de l'étai, dit élément tubulaire inférieur, est un élément tubulaire à section transversale polygonale et l'élément tubulaire, dit supérieur, apte à être monté à emboîtement télescopique dans l'élément tubulaire inférieur, est un élément tubulaire à section transversale circulaire, l'élément tubulaire supérieur étant, de préférence, inscrit dans l'élément tubulaire inférieur.In a preferred embodiment, the tubular ground support element provided with a base of the support body of the forestay, said lower tubular element, is a tubular element with a polygonal cross section and the tubular element, said The upper, telescopically interlocking fitting in the lower tubular element, is a tubular element with a circular cross-section, the upper tubular element being preferably inscribed in the lower tubular element.

De préférence, les moyens de verrouillage forment avec l'élément tubulaire qui les porte un ensemble indémontable. Ainsi, tout risque de perte d'au moins une partie des moyens de verrouillage est écarté.Preferably, the locking means form with the tubular element which carries them an indémontable assembly. Thus, any risk of loss of at least part of the locking means is discarded.

De préférence encore, les deux éléments tubulaires ou au moins deux des éléments tubulaires du corps de soutien comportent l'un, au moins deux ergots, l'autre, au moins deux crans circonférentiellement opposés, les ergots de la paire ou de l'une des paires de l'élément tubulaire porte-ergots étant aptes à s'insérer chacun, de manière simultanée, à l'intérieur d'un cran de la ou d'une paire de crans circonférentiellement opposés de l'élément tubulaire porte-crans lors du passage de la position déverrouillée à la position verrouillée desdits éléments tubulaires entre eux.More preferably, the two tubular elements or at least two of the tubular elements of the support body comprise one, at least two lugs, the other, at least two circumferentially opposite notches, the lugs of the pair or one pairs of the tubular bearing-pin members being adapted to each insert, simultaneously, within a notch of the or a pair of circumferentially opposite notches of the tubular element-notches when passing from the unlocked position to the locked position of said tubular elements together.

La présence d'ergots ou de crans fonctionnant par paire permet d'accroître la résistance mécanique de l'ensemble.The presence of lugs or notches operating in pairs increases the mechanical strength of the assembly.

Généralement, l'étai étant du type dans lequel chaque élément tubulaire du corps de soutien comporte, pour son montage à emboîtement télescopique avec au moins un autre élément tubulaire, une zone d'emboîtement apte à être au moins partiellement recouverte par un autre élément tubulaire et/ou une zone d'emboîtement apte à recouvrir au moins partiellement un autre élément tubulaire, le ou les ergots sont disposés dans la zone d'emboîtement dudit élément tubulaire apte à être recouverte au moins partiellement par un autre élément tubulaire et le ou les crans sont disposés dans la zone d'emboîtement dudit élément tubulaire apte à recouvrir au moins partiellement un autre élément tubulaire.Generally, the strut being of the type in which each tubular element of the support body comprises, for its telescopic interlocking fitting with at least one other tubular element, an interlocking zone able to be at least partially covered by another tubular element. and / or an interlocking zone capable of covering at least partially another tubular element, the lug or lugs are arranged in the interlocking zone of said tubular element capable of being covered at least partially by another tubular element and the one or more notches are arranged in the interlocking zone of said tubular element capable of covering at least partially another tubular element.

Dans un mode de réalisation préféré de l'invention, du type dans lequel les éléments tubulaires du corps de soutien sont aptes à être retenus par l'intermédiaire des moyens de verrouillage dans une position axiale prédéterminée sélectionnée parmi une pluralité de positions axiales prédéterminées correspondant chacune à une longueur dudit corps de soutien, au moins l'un des éléments tubulaires du corps de soutien, apte à être monté à emboîtement télescopique avec un autre élément tubulaire, est équipé, dans sa zone d'emboîtement, apte à recouvrir au moins partiellement un autre élément tubulaire, d'une série de crans décalés axialement le long dudit élément, chaque étage de crans étant formé d'un cran unique ou d'au moins deux crans ménagés de manière circonférentiellement opposée sur ledit élément tubulaire.In a preferred embodiment of the invention, of the type in which the tubular elements of the support body are able to be retained by means of the locking means in a predetermined axial position selected from a plurality of predetermined axial positions corresponding to each a length of said support body, at least one of the tubular elements of the support body, adapted to be mounted telescopically interlocking with another tubular element, is equipped, in its interlocking zone, capable of covering at least partially another tubular element, a series of notches axially offset along said element, each stage of notches being formed of a single notch or at least two notches arranged circumferentially opposite on said tubular element.

L'invention a également pour objet un procédé d'ajustement en longueur et de verrouillage à la longueur du corps de soutien d'un étai du type précité, ledit corps de soutien, muni à son extrémité inférieure d'un piétement, étant formé d'au moins un élément tubulaire inférieur d'appui au sol à l'intérieur duquel est monté à emboîtement télescopique un élément tubulaire supérieur, ledit élément tubulaire supérieur étant apte à être retenu par rapport audit élément tubulaire inférieur dans au moins une position axiale prédéterminée par l'intermédiaire de moyens de verrouillage formés au moins par au moins un cran et au moins un ergot portés respectivement l'un, par l'élément tubulaire inférieur, l'autre, par l'élément tubulaire supérieur, ledit ergot de l'élément tubulaire supérieur étant apte à s'insérer dans le cran de l'élément tubulaire inférieur, caractérisé en ce que ledit procédé comprend au moins une étape de déplacement axial à coulissement de l'élément tubulaire supérieur dans l'élément tubulaire inférieur jusqu'à une position dans laquelle le ou au moins l'un des ergots non escamotables de l'élément tubulaire supérieur est positionné au même niveau que le ou au moins un cran sélectionné de l'élément tubulaire inférieur, ergot et cran étant, au cours de ce déplacement axial, décalés angulairement l'un par rapport à l'autre, et au moins une étape de déplacement relatif en rotation de les éléments tubulaires inférieur et supérieur autour de leur axe longitudinal pour le passage du ou d'au moins l'un des ergots non escamotables de l'élément tubulaire supérieur de la position déverrouillée dans laquelle l'ergot est disposé à l'extérieur du cran sélectionné à une position verrouillée dans laquelle l'ergot est disposé à l'intérieur du cran sélectionné.The invention also relates to a method of length adjustment and locking the length of the support body of a forestay of the aforementioned type, said support body, provided at its lower end with a base, being formed of at least one lower tubular support element on the ground inside which is mounted telescopically a higher tubular element, said upper tubular element being able to be retained with respect to said lower tubular element in at least one axial position predetermined by through locking means formed at least by at least one notch and at least one lug carried respectively one, by the lower tubular element, the other by the upper tubular element, said lug of the upper tubular element being adapted to fit into the notch of the lower tubular element, characterized in that said method comprises at least one sliding axial displacement step of the upper tubular element in the lower tubular element to a position in which the or at least one of the non-retractable lugs of the upper tubular element is positioned at the same level as the or at least one selected notch of the lower tubular element, pin and notch being, during this axial displacement, angularly offset relative to each other, and at least one step of relative displacement in rotation of the lower and upper tubular elements about their longitudinal axis for the passage of the or at least one of the non retractable pins of the upper tubular element of the unlocked position in which the lug is disposed outside the selected notch in a locked position in which the lug is disposed within the selected notch.

Grâce à la conception des moyens de verrouillage, le passage de la position déverrouillée à la position verrouillée et inversement est facilité et sûr puisqu'il nécessite uniquement un déplacement relatif des éléments tubulaires entre eux.Thanks to the design of the locking means, the transition from the unlocked position to the locked position and vice versa is facilitated and safe since it requires only a relative displacement of the tubular elements between them.

L'invention sera bien comprise à la lecture de la description suivante d'exemples de réalisation, en référence aux dessins annexés dans lesquels :

  • la figure 1 représente une vue en perspective d'un étai à l'état verrouillé des éléments tubulaires constitutifs dudit étai dans une position de plus faible longueur du corps de soutien ;
  • la figure 2 représente une vue partielle en coupe et de face de l'étai en position déverrouillé des moyens de verrouillage ;
  • la figure 3 représente une vue partielle en coupe et de face de l'étai en position verrouillée des moyens de verrouillage ;
  • la figure 4 représente une vue partielle en perspective des éléments tubulaires et des moyens de verrouillage qu'ils portent.
The invention will be better understood on reading the following description of exemplary embodiments, with reference to the appended drawings in which:
  • the figure 1 represents a perspective view of a stay in the locked state of the tubular elements constituting said stay in a position of shorter length of the support body;
  • the figure 2 represents a partial view in section and front of the forestay in the unlocked position of the locking means;
  • the figure 3 is a partial view in section and front of the forestay in the locked position of the locking means;
  • the figure 4 represents a partial perspective view of the tubular elements and the locking means they carry.

Comme mentionné ci-dessus, l'étai 1, objet de l'invention, est plus particulièrement destiné au soutien, à l'appui et/ou à la stabilisation de construction ou de structure, telle qu'une coque de bateau mise à sec. Cet étai 1 comprend un corps 2 de soutien réalisé sous forme d'un corps 2 allongé et muni à son extrémité inférieure d'un piètement 3 réalisé d'une seule pièce ou rapporté sur le corps 2 de soutien, ce piètement étant monté fixe ou orientable par rapport audit corps. Dans l'exemple représenté, le piètement 3 affecte la forme d'une platine circulaire montée fixe à une extrémité, en l'occurrence l'extrémité inférieure du corps de soutien. L'extrémité supérieure du corps 2 de soutien peut être munie d'un patin contre lequel prend appui la construction ou structure à étayer.As mentioned above, the strut 1, object of the invention, is more particularly intended for support, support and / or stabilization of construction or structure, such as a boat hull dry . This strut 1 comprises a support body 2 made in the form of an elongate body 2 and provided at its lower end with a base 3 made in one piece or attached to the support body 2, this base being fixedly mounted or orientable relative to said body. In the example shown, the base 3 has the shape of a fixed circular plate mounted at one end, in this case the lower end of the support body. The upper end of the support body 2 may be provided with a pad against which supports the construction or structure to be supported.

Le corps 2 de soutien est formé d'au moins deux éléments 4, 5 tubulaires aptes à être montés à emboîtement télescopique et retenus dans au moins une position axiale prédéterminée par l'intermédiaire de moyens 6 de verrouillage. En position axiale de retenue, le déplacement axial des éléments tubulaires est limité à l'intérieur d'une plage axiale de déplacement prédéterminée.The support body 2 is formed of at least two tubular elements 4, 5 capable of being mounted telescopically interlocked and retained in at least one predetermined axial position via locking means 6. In the axial retention position, the axial displacement of the tubular elements is limited within a predetermined axial range of displacement.

De manière caractéristique à l'invention, les moyens 6 de verrouillage sont du type à baïonnette. Ils sont formés au moins par au moins un ergot 7 non escamotable et au moins un cran 8 portés respectivement l'un 7, par l'un 4 des éléments tubulaires, l'autre 8, par l'autre 5 desdits éléments 4, 5 tubulaires. Les moyens 6 de verrouillage sont aptes à passer, par simple déplacement relatif des éléments tubulaires, d'une position déverrouillée à une position verrouillée dans laquelle le ou au moins l'un des ergots 7 de l'un des éléments tubulaires est inséré dans ledit ou au moins l'un des crans 8 de l'autre élément tubulaire et inversement. Ce passage de la position déverrouillée à la position verrouillée s'opère par simple déplacement relatif desdits éléments 4, 5 tubulaires en rotation autour de leur axe longitudinal, ce déplacement relatif en rotation étant complété si nécessaire par un déplacement relatif axial desdits éléments tubulaires. En effet, selon la conception retenue par les moyens de verrouillage, un simple déplacement relatif en rotation autour de leur axe longitudinal des éléments tubulaires entre eux peut être suffisant pour passer d'une position verrouillée à une position déverrouillée ou inversement d'une position déverrouillée à une position verrouillée tandis que dans certains modes de réalisation, il est nécessaire de procéder d'une part à un déplacement relatif en rotation, d'autre part, à un déplacement relatif axial desdits éléments tubulaires pour permettre le passage de la position verrouillée à la position déverrouillée et inversement, étant entendu que la position déverrouillée correspond à une position dans laquelle le ou les ergots sont disposés à l'extérieur du ou des crans tandis que la position verrouillée correspond à une position dans laquelle l'ergot ou au moins l'un des ergots est disposé à l'intérieur d'un cran.Characteristically to the invention, the locking means 6 are of the bayonet type. They are formed at least by at least one non-retractable lug 7 and at least one notch 8 carried respectively one 7, by one 4 of the tubular elements, the other 8, by the other 5 of said elements 4, 5 tubular. The locking means 6 are able to pass, by simple relative displacement of the tubular elements, from an unlocked position to a locked position in which the or at least one of the lugs 7 of one of the tubular elements is inserted in said or at least one of the notches 8 of the other tubular element and vice versa. This passage from the unlocked position to the locked position is effected by simple relative displacement of said tubular elements 4, 5 in rotation about their longitudinal axis, this relative displacement in rotation being supplemented if necessary by a relative axial displacement of said tubular elements. Indeed, according to the design adopted by the locking means, a simple relative displacement in rotation about their longitudinal axis of the tubular elements between them may be sufficient to move from a locked position to an unlocked position or vice versa from an unlocked position to a locked position while in some embodiments, it is necessary to proceed on the one hand to a relative displacement in rotation, on the other hand, to a relative axial displacement of said tubular elements to allow the transition from the locked position to the unlatched position and vice versa, it being understood that the unlocked position corresponds to a position in which the lug or lugs are arranged outside the notch or notches while the locked position corresponds to a position in which the lug or at least the lug one of the lugs is disposed inside a notch.

Dans un mode de réalisation dudit étai, du type dans lequel les éléments 4, 5 tubulaires du corps 2 de soutien sont aptes à être retenus par l'intermédiaire des moyens 6 de verrouillage dans une position axiale prédéterminée sélectionnée parmi une pluralité de positions axiales prédéterminées correspondant chacune à une longueur dudit corps 2 de soutien, au moins l'un des éléments 4, 5 tubulaires du corps 2 de soutien, dans sa zone d'emboîtement, apte à recouvrir au moins partiellement un autre élément tubulaire, d'une série de crans 8 décalés axialement le long dudit élément, chaque étage de crans étant formé d'un cran unique ou d'au moins deux crans 8 ménagés de manière circonférentiellement opposée sur ledit élément tubulaire.In one embodiment of said strut, of the type in which the tubular elements 4, 5 of the support body 2 are able to be retained via the locking means 6 in a predetermined axial position selected from a plurality of predetermined axial positions. each corresponding to a length of said support body 2, at least one of the tubular elements 4, 5 of the supporting body 2, in its interlocking zone, capable of covering at least partially another tubular element, of a series notches 8 offset axially along said element, each stage of notches being formed of a single notch or at least two notches 8 formed circumferentially opposite on said tubular element.

Dans les exemples représentés, le corps 2 de soutien est formé de deux éléments 4, 5 tubulaires montés à emboîtement télescopique, à savoir un élément 5 tubulaire inférieur, muni d'un piètement d'appui à l'intérieur duquel est monté à emboîtement télescopique un élément 4 tubulaire supérieur. L'élément 4 tubulaire supérieur porte un ou plusieurs ergots 7 tandis que l'élément 5 tubulaire inférieur porte généralement une pluralité de crans décalés axialement le long dudit élément. L'un quelconque des crans de cet alignement de crans est apte à coopérer avec un ergot de l'élément tubulaire supérieur de manière à permettre, à l'état inséré de l'ergot 7 dans le cran 8, une retenue axiale de l'élément tubulaire supérieur dans une position axiale prédéterminée par rapport à l'élément tubulaire inférieur, cette retenue correspondant à la longueur souhaitée du corps de soutien.In the examples shown, the support body 2 is formed of two tubular elements 4, 5 mounted telescopically interlocking, namely a lower tubular member 5, provided with a support base within which is mounted telescopically interlocking an upper tubular member 4. The upper tubular member 4 carries one or more lugs 7 while the lower tubular member 5 generally carries a plurality of notches axially offset along said member. Any of the notches of this alignment of notches is adapted to cooperate with a lug of the upper tubular element so as to allow, in the inserted state of the lug 7 in the notch 8, an axial retention of the upper tubular element in a predetermined axial position relative to the lower tubular element, this retention corresponding to the desired length of the support body.

Bien entendu, le corps 2 de soutien aurait pu de manière équivalente comporter un nombre d'éléments tubulaires supérieur à deux.Of course, the support body 2 could equally have a number of tubular elements greater than two.

De préférence, crans et ergots agissent par paire. Ainsi, dans l'exemple représenté aux figures, l'élément 5 tubulaire inférieur, muni d'un piétement du corps 2 de soutien, est équipé, dans sa zone d'emboîtement apte à recouvrir au moins partiellement un autre élément tubulaire, dit élément tubulaire supérieur, d'une série de crans décalés axialement le long dudit élément, chaque étage de crans de ladite série étant formé de deux crans ménagés de manière circonférentiellement opposée sur l'élément tubulaire, en l'occurrence sur deux faces opposées de l'élément tubulaire inférieur qui présente une section transversale quadrangulaire.Preferably, notches and lugs act in pairs. Thus, in the example shown in the figures, the lower tubular element 5, provided with a base 2 of support body, is equipped, in its interlocking zone capable of covering at least partially another tubular element, said element upper tubular, a series of notches axially offset along said element, each step of notches of said series being formed of two notches arranged circumferentially opposite on the tubular element, in this case on two opposite sides of the lower tubular element which has a quadrangular cross section.

Chaque cran 8 est formé par une lumière oblongue délimitée par une ligne fermée. Cette lumière oblongue est orientée transversalement à l'axe longitudinal de l'élément tubulaire qui la porte. Cette lumière est directement ménagée dans la paroi tubulaire de l'élément tubulaire qui la porte par exemple par perçage de ladite paroi. L'un des bords transversaux de cette lumière est donc apte à former une butée contre laquelle l'ergot vient en butée en position de fin de course dudit ergot lors du déplacement angulaire de l'élément tubulaire porte-ergot par le passage de la position déverrouillée à la position verrouillée. L'un des bords longitudinaux de ladite lumière, de préférence le bord longitudinal inférieur de cette lumière, est muni d'une encoche dont le rôle sera décrit ci-après.Each notch 8 is formed by an oblong slot delimited by a closed line. This oblong slot is oriented transversely to the longitudinal axis of the tubular element which carries it. This light is directly formed in the tubular wall of the tubular element which carries it for example by drilling said wall. One of the transverse edges of this light is therefore able to form an abutment against which the lug comes into abutment in the end position of said lug during the angular displacement of the tubular lug-holder element by the passage of the position unlocked at the position locked. One of the longitudinal edges of said light, preferably the lower longitudinal edge of this light, is provided with a notch whose role will be described below.

Parallèlement, l'élément 4 tubulaire supérieur est équipé, dans sa zone d'emboîtement apte à être recouverte au moins partiellement par un autre élément tubulaire, en l'occurrence ici par l'élément tubulaire inférieur, d'au moins deux ergots 7 ménagés de manière circonférentiellement opposée sur ledit élément tubulaire. En position verrouillée, les ergots de la paire ou de l'une des paires d'ergots de l'élément 4 tubulaire porte-ergots s'insèrent chacun de manière simultanée à l'intérieur d'un cran 8 de la ou d'une paire de crans circonférentiellement opposés de l'élément 5 tubulaire porte-crans. En variante, l'élément tubulaire supérieur aurait pu comporter, dans sa zone d'emboîtement apte à être recouverte au moins partiellement par un autre élément tubulaire, une série d'ergots décalés axialement le long dudit corps pour accroître la résistance de l'ensemble en position verrouillée. De même, il aurait pu être prévu, de manière équivalente, un seul étage de crans sur l'élément tubulaire inférieur et une pluralité d'étages d'ergots sur l'élément tubulaire supérieur, chaque étage étant formé d'un ergot unique ou d'une paire d'ergots. Cette solution n'est pas préférée.In parallel, the upper tubular element 4 is equipped, in its interlocking zone capable of being covered at least partially by another tubular element, in this instance by the lower tubular element, with at least two spurs 7 arranged in a circumferentially opposite manner on said tubular member. In the locked position, the lugs of the pair or one of the pairs of lugs of the tubular element 4 holding lugs each simultaneously fit inside a notch 8 of the or a pair of circumferentially opposite notches of the tubular ratchet member. As a variant, the upper tubular element could have, in its interlocking zone capable of being covered at least partially by another tubular element, a series of lugs offset axially along said body to increase the resistance of the assembly. in locked position. Similarly, it could have been provided, in an equivalent manner, a single stage of notches on the lower tubular element and a plurality of stages of lugs on the upper tubular element, each stage being formed of a single lug or a pair of pins. This solution is not preferred.

Dans les exemples représentés, l'élément 5 tubulaire d'appui au sol muni d'un piétement 3 de l'étai, dit élément 5 tubulaire inférieur, est un élément tubulaire à section transversale polygonale et, l'élément 4 tubulaire, dit supérieur, apte à être monté à emboîtement télescopique dans l'élément 5 tubulaire inférieur, est un élément tubulaire à section transversale circulaire, l'élément 4 tubulaire supérieur étant de préférence inscrit dans l'élément 5 tubulaire inférieur.In the examples shown, the tubular ground support member provided with a support 3 of the strut, said lower tubular element, is a tubular element with a polygonal cross section and the tubular element 4 , which can be telescopically fitted into the lower tubular element, is a tubular element with a circular cross-section, the upper tubular element 4 being preferably inscribed in the lower tubular element.

En particulier, l'élément 5 tubulaire inférieur est un élément à section carrée ou rectangulaire, les crans étant ménagés sur au moins l'une des faces, de préférence deux faces parallèles opposées dudit élément 5 tubulaire. L'élément 4 tubulaire supérieur est un élément à section circulaire, les ergots étant ménagés de manière diamétralement opposés et en saillie radiale externe sur la paroi tubulaire dudit élément 4.In particular, the lower tubular member is a square or rectangular section member, the notches being provided on at least one of the faces, preferably two opposite parallel faces of said tubular member. The upper tubular element 4 is a circular section element, the lugs being arranged diametrically opposite and radially external projection on the tubular wall of said element 4.

Le réglage en longueur du corps de soutien s'opère donc comme suit. L'élément tubulaire supérieur est introduit à coulissement dans l'élément tubulaire inférieur avec une position angulaire relative des éléments tubulaires telle que les ergots de l'élément tubulaire supérieur s'étendent le long d'une diagonale de la paroi tubulaire de l'élément tubulaire inférieur pour ne pas gêner le déplacement relatif axial des éléments tubulaires entre eux. Une fois la longueur du corps de soutien choisie par positionnement de l'étage ou d'un étage d'ergots au même niveau qu'un étage de crans, l'élément tubulaire supérieur est entraîné à rotation autour de son axe longitudinal par rotation dite quart de tour jusqu'à une position dans laquelle le ou les ergots dudit élément tubulaire supérieur s'insèrent dans le ou les crans situés au même niveau de l'élément tubulaire inférieur, comme l'illustre le passage de la figure 2 à la figure 3. Dans cette position, l'élément tubulaire supérieur, une fois relâché par l'opérateur, tend, sous l'effet de son propre poids, à se déplacer axialement pour permettre à l'ergot de venir se loger dans une encoche ménagée dans le bord longitudinal inférieur de la lumière constitutive du cran de sorte que tout déverrouillage intempestif par simple entraînement en rotation de l'élément tubulaire supérieur suivant une direction opposée est empêché sans avoir au préalable soulevé ledit élément tubulaire supérieur pour permettre la sortie de l'ergot de l'encoche ménagée dans la lumière. La lumière a donc ici la forme générale d'un trou de serrure. Il est donc nécessaire, pour le passage de la position verrouillée à la position déverrouillée de déplacer axialement, en l'occurrence de soulever l'élément tubulaire supérieur pour permettre la sortie de l'ergot de l'encoche avant d'entraîner un déplacement à rotation l'élément tubulaire supérieur par rapport à l'élément tubulaire inférieur pour permettre la sortie de l'ergot de ladite lumière. Une fois le déverrouillage opéré, c'est-à-dire une fois l'ergot sorti du cran, le déplacement relatif axial des éléments tubulaires peut permettre de sélectionner une nouvelle position de verrouillage correspondant à une autre longueur du corps de soutien. La retenue axiale desdits élément tubulaires entre eux dans cette nouvelle position axiale des éléments tubulaires s'opère comme mentionné ci-dessus. Dans un mode de réalisation simplifié, l'encoche peut être supprimée de sorte que le passage de la position verrouillée à la position déverrouillée ou inversement s'opère par simple déplacement relatif en rotation des éléments tubulaires.The length adjustment of the support body is therefore as follows. The upper tubular element is slidably introduced into the lower tubular element with a relative angular position of the tubular elements such that the lugs of the upper tubular element extend along a diagonal of the tubular wall of the element. tubular lower so as not to hinder the relative axial displacement of the tubular elements together. Once the length of the support body chosen by positioning the stage or a stage of pins at the same level as a stage of notches, the upper tubular element is rotated about its longitudinal axis by said rotation. quarter turn to a position in which the lug or lugs of said upper tubular member fit into the notch or notches at the same level of the lower tubular member, as illustrated by the passage of the figure 2 to the figure 3 . In this position, the upper tubular element, once released by the operator, tends, under the effect of its own weight, to move axially to allow the lug to be housed in a notch in the edge lower longitudinal of the light constituting the notch so that any inadvertent unlocking by simple rotation of the upper tubular element in an opposite direction is prevented without having previously raised said upper tubular element to allow the exit of the pin of the notch in the light. The light here has the general shape of a keyhole. It is therefore necessary, for the transition from the locked position to the unlocked position to move axially, in this case to raise the upper tubular element to allow the exit of the lug from the notch before causing a displacement to rotating the upper tubular element relative to the lower tubular element to allow the output of the pin of said light. Once the unlocking operation, that is to say once the lug out of the notch, the relative axial displacement of the tubular elements can allow to select a new locking position corresponding to another length of the support body. Axial restraint said tubular element between them in this new axial position of the tubular elements operates as mentioned above. In a simplified embodiment, the notch may be removed so that the transition from the locked position to the unlocked position or vice versa is effected by simple relative rotational movement of the tubular elements.

Claims (9)

  1. A stanchion (1), notably for supporting, bearing and/or stabilizing an assembly or a structure, such as a dry-docked boat hull, said stanchion (1) comprising at least one supporting body (2) provided at its lower end with a base (3), the supporting body (2) being formed with at least two tubular elements (4,5) capable of being mounted with a telescopic fitting and retained in at least one predetermined axial position via locking means (6), said locking means (6) between two tubular elements (4,5) of the supporting body (2), in the at least partly fitted condition of said tubular elements (4,5), being locking means (6) of the bayonet type formed at least by at least one non-retractable lug (7) and at least one notch (8), one (7) being borne by one (4) of the tubular elements, the other one (8) being borne by the other one (5) of said tubular elements (4,5), respectively, said locking means (6) being capable of passing from an unlocked position to a locked position in which said lug or at least one of the lugs (7) of one of the tubular elements is inserted into said notch or at least one of the notches (8) of the other tubular elements and vice versa, by simple relative displacement at least in rotation of said tubular elements (4,5), characterized in that the tubular elements (4,5) of the supporting body (2) have cross-sections of a different shape from one tubular element to another.
  2. The stanchion (1) according to claim 1,
    characterized in that said lug or at least one of the lugs (7) assumes the shape of a stud or nipple radially protruding out of the tubular element (4) bearing it and, in that said notch or at least one of the notches (8) assumes the shape of a lumen, preferably with notching, made in the tubular wall of the tubular element (5) bearing it.
  3. The stanchion (1) according to claim 2,
    characterized in that at least one of the lumens, preferably each lumen, is delimited by a closed line.
  4. The stanchion (1) according to claim 1,
    characterized in that the ground-supported tubular element (5) provided with a base (3) of the body (2) supporting the stanchion, a so-called lower tubular element (5), is a tubular element with a polygonal cross-section and, in that the so-called upper tubular element (4), capable of being mounted with a telescopic fitting in the lower tubular element (5), is a tubular element with a circular cross-section, the upper tubular element (5) preferably being inscribed in the lower tubular element (5).
  5. The stanchion (1) according to one of claims 1 to 4,
    characterized in that the locking means (6) form with the tubular element (4,5) bearing them, an assembly which cannot be disassembled.
  6. The stanchion (1) according to one of claims 1 to 5,
    characterized in that both tubular elements (4,5) or at least two of the tubular elements of the supporting body (2) are such that one of them includes at least two lugs (7), the other one at least two circumferentially opposite notches (8), the lugs (7) of the pair or of one of the pairs of the lug-holder tubular element (4) being capable of each being inserted simultaneously inside a notch (8) of said or one pair of circumferentially opposite notches of the notch-holder tubular element (5) upon passing from the unlocked position to the locked position of said tubular elements between them.
  7. The stanchion (1) according to one of claims 1 to 6, of the type in which each tubular element (4, 5) of the supporting body (2) includes for its mounting with a telescopic fitting with at least one other tubular element, a fitting area capable of being at least partly covered by another tubular element and/or a fitting area capable of covering at least partly another tubular element,
    characterized in that said lug(s) (7) is(are) positioned in the fitting area of said tubular element, capable of being at least partly covered with another tubular element and in that the notch(es) (8) is(are) positioned in the fitting area of said tubular element, capable of at least partly covering another tubular element.
  8. The stanchion (1) according to one of claims 1 to 7, of the type in which the tubular elements (4,5) of the supporting body (2) are capable of being retained via locking means (6) in a predetermined axial position selected from a plurality of predetermined axial positions each corresponding to a length of said supporting body (2),
    characterized in that at least one of the tubular elements (4,5) of the supporting body (2), capable of being mounted with a telescopic fitting with another tubular element, is equipped in its fitting area, capable of at least partly covering another tubular element, with a series of notches (8) axially offset along said element, each stage of notches being formed by a single notch or by at least two notches (8) made in a circumferentially opposite way on said tubular element.
  9. A method for adjusting the length and locking such a stanchion (1) at said length of the supporting body (2), according to one of claims 1 to 8, said supporting body (2), provided at its lower end with a base (3), being formed with at least one ground-supported lower tubular element (5) inside which an upper tubular element (4) is mounted with a telescopic fitting, said upper tubular element (4) being capable of being retained relatively to said lower tubular element (5) in at least one predetermined axial position via locking means (6) at least formed with at least one notch (8) and at least one lug (7), one (8) being borne by the lower tubular element (5), the other one (7) being borne by the upper tubular element (4), respectively, said lug (7) of said upper tubular element (4) being capable of being inserted into the notch (8) of the lower tubular element (5),
    characterized in that said method comprises at least one step for axial displacement with the sliding of the upper tubular element (4) in the lower tubular element (5) as far as a position in which said non-retractable lug or at least one of the non-retractable lugs (7) of the upper tubular element (4) is positioned at the same level as said or at least one selected notch (8) of the lower tubular element (5), the lug (7) and the notch (8) being during this axial displacement, angularly offset relatively to each other, and at least one step for relative displacement in rotation of the lower and upper tubular elements (4,5) around their longitudinal axis for the passing of said non-retractable lug or of at least one of the non-retractable lugs of the upper tubular element (4) from the unlocked position in which the lug (7) is positioned outside the selected notch (8) to a locked position in which the lug (7) is positioned inside the selected notch (8).
EP20100189444 2009-11-16 2010-10-29 Stanchion for supporting, bearing and/or stabilizing an assembly or a structure and method for adjusting the length and locking such a stanchion at said length Active EP2322421B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0905489A FR2952611A1 (en) 2009-11-16 2009-11-16 IN PARTICULAR FOR THE SUPPORT, SUPPORT AND / OR STABILIZATION OF CONSTRUCTION OR STRUCTURE AND METHOD OF ADJUSTING LENGTH AND LATCHING TO THE LENGTH OF SUCH A STATE

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EP2322421A1 EP2322421A1 (en) 2011-05-18
EP2322421B1 true EP2322421B1 (en) 2012-06-20

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EP20100189444 Active EP2322421B1 (en) 2009-11-16 2010-10-29 Stanchion for supporting, bearing and/or stabilizing an assembly or a structure and method for adjusting the length and locking such a stanchion at said length

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EP (1) EP2322421B1 (en)
FR (1) FR2952611A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104828220A (en) * 2015-05-13 2015-08-12 广西金达造船有限公司 Production method for platform jig

Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
WO2013181734A1 (en) * 2012-06-07 2013-12-12 Athos Construction Products Inc. Scaffold post sleeve
FR3034443B1 (en) * 2015-04-01 2017-03-24 Francois Six DETECTION DEVICE, CONSTRUCTION COMPRISING SUCH A DEVICE AND METHOD FOR COATING A REFERENCE SURFACE USING SUCH AN INTERFACE DEVICE
CN106671222A (en) * 2017-01-25 2017-05-17 新世纪建设集团有限公司 Suspended type adjustable protective cover mechanism of woodworking disk saw

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Publication number Priority date Publication date Assignee Title
US3469870A (en) * 1967-11-24 1969-09-30 Homer A Barkus Telescopic structure with rotatable shaft
US4792130A (en) 1986-04-16 1988-12-20 Ardent John C Adjustable support system for marine craft
US4756642A (en) * 1987-03-19 1988-07-12 Jos. Dyson & Sons, Inc. Boat storage, shipping system and support therefore

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104828220A (en) * 2015-05-13 2015-08-12 广西金达造船有限公司 Production method for platform jig

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EP2322421A1 (en) 2011-05-18
FR2952611A1 (en) 2011-05-20

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