FR2718781A1 - Submerged telescopic mast - Google Patents
Submerged telescopic mast Download PDFInfo
- Publication number
- FR2718781A1 FR2718781A1 FR9404904A FR9404904A FR2718781A1 FR 2718781 A1 FR2718781 A1 FR 2718781A1 FR 9404904 A FR9404904 A FR 9404904A FR 9404904 A FR9404904 A FR 9404904A FR 2718781 A1 FR2718781 A1 FR 2718781A1
- Authority
- FR
- France
- Prior art keywords
- mast
- envelope
- motor
- water
- telescopic mast
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/18—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures movable or with movable sections, e.g. rotatable or telescopic
- E04H12/182—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures movable or with movable sections, e.g. rotatable or telescopic telescopic
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
Description
La présente invention concerne un mât télescopique immergé dans sa partie basse.The present invention relates to a telescopic mast immersed in its lower part.
On connait les mâts télescopiques immergés en partie basse dont l'élévation hors de l'eau est obtenue par un vérin hydraulique ou pneumatique contenu dans une enveloppe immergée servant à contenir un des mâts en position repliée tout en servant de guide audit mât lors de son élévation et d'ossature support une fois élevé, ledit vérin étant fixé en une des extrémités en partie basse de l'enveloppe, son autre extrémité (la tige) à la base du mât.We know the telescopic masts submerged in the lower part whose elevation out of the water is obtained by a hydraulic or pneumatic cylinder contained in a submerged envelope used to contain one of the masts in the folded position while serving as a guide to said mast during its elevation and support frame once raised, said cylinder being fixed at one of the ends in the lower part of the casing, its other end (the rod) at the base of the mast.
Ce mode d'élévation présente certains inconvénients suivant les usages, nécessitant d'une part la présence d'une centrale hydraulique ou pneumatique afin de pouvoir faire fonctionner le vérin, d'autre part il est nécessaire de recourir à des étanchéités onéreuses, généralement de faible durée, afin de préserver de l'eau les organes.This elevation mode has certain drawbacks depending on the uses, requiring on the one hand the presence of a hydraulic or pneumatic power station in order to be able to operate the jack, on the other hand it is necessary to have recourse to expensive seals, generally of short duration, in order to preserve the organs from water.
L'invention a pour but de pallier aux inconvénients précédemment exposés.The invention aims to overcome the drawbacks described above.
L'invention a pour objet un mât télescopique immergé contenu dans une enveloppe elle-même immergée, caractérisé en ce qu'en partie supérieure le mât est pourvu d'une obturation étanche, à l'intérieur dudit mât est contenu un moteur électrique relié par cardan à un arbre fileté se vissant ou se dévissant sur un écrou à billes solidaire d'un élément creux destiné à contenir l'arbre fileté lorsque le mât est en position repliée, ledit élément creux étant articulé en sa partie basse au fond de l'enveloppe, lors du déploiement du mât, l'enveloppe le contenant se remplit d'eau, durant sa descente l'eau contenue dans l'enveloppe immergée est évacuée à l'extérieur de cette dernière par la pression de l'air contenu à l'intérieur du mât agissant sur l'eau qui s'évacue latéralement entre le pourtour dudit mât et le pourtour intérieur de l'enveloppe isolant ainsi le moteur électrique du contact de l'eau.The subject of the invention is a submerged telescopic mast contained in an envelope which is itself submerged, characterized in that in the upper part the mast is provided with a sealed closure, inside said mast is contained an electric motor connected by gimbal with a threaded shaft screwing or unscrewing on a ball nut secured to a hollow element intended to contain the threaded shaft when the mast is in the folded position, said hollow element being articulated in its lower part at the bottom of the envelope, during the deployment of the mast, the envelope containing it fills with water, during its descent the water contained in the immersed envelope is evacuated outside of the latter by the pressure of the air contained at l interior of the mast acting on the water which is discharged laterally between the periphery of said mast and the internal periphery of the envelope thus isolating the electric motor from contact with water.
D'autres caractéristiques et avantages de l'invention ressortiront plus clairement de la description qui va suivre faite en regard des dessins joints donnés à titre d'exemple non limitatif, où - la figure 1 est une vue en élévation, le mât étant en position déployée, - la figure 2, est une vue en élévation, le mât replié contenu dans l'enveloppe.Other characteristics and advantages of the invention will emerge more clearly from the description which follows, given with reference to the accompanying drawings given by way of nonlimiting example, where - Figure 1 is an elevation view, the mast being in position deployed, - Figure 2, is an elevational view, the folded mast contained in the envelope.
Tel que représenté figures 1 et 2, le mât télescopique 1 présente une partie supérieure 2 étanche à l'intérieur 15 duquel est contenu et immobilisé en sa partie haute 3 un moteur électrique 4 généralement à courant continu afin d'être alimenté en basse tension, ledit moteur étant relié au moyen d'un cardan 5 à un arbre rotatif fileté 6 centré au moyen d'un palier 16 se vissant ou se dévissant selon la rotation du moteur 4 sur un écrou généralement à billes 7 maintenu en la partie supérieure d'un élément généralement cylindrique 8 destiné à contenir l'arbre fileté 6 en position basse du mât 1, ledit élément 8 étant maintenu articulé au moyen d'une rotule 9 en la partie basse de l'enveloppe 10 contenant ledit mât 1 et lui servant de guide en sa partie haute 11 tant en position repliée que déployée hors de l'enveloppe 10 au moyen dudit écrou 7.As shown in FIGS. 1 and 2, the telescopic mast 1 has a sealed upper part 2 inside of which is contained and immobilized in its upper part 3 an electric motor 4 generally with direct current in order to be supplied with low voltage, said motor being connected by means of a gimbal 5 to a threaded rotary shaft 6 centered by means of a bearing 16 which is screwed or unscrewed according to the rotation of the motor 4 on a generally ball nut 7 held in the upper part of a generally cylindrical element 8 intended to contain the threaded shaft 6 in the lower position of the mast 1, said element 8 being kept articulated by means of a ball joint 9 in the lower part of the casing 10 containing said mast 1 and serving as its guide in its upper part 11 both in the folded position and deployed out of the envelope 10 by means of said nut 7.
Lorsque le mât est en position déployée comme représenté figure 1 hors du niveau de l'eau 12, cette dernière pénètre par les interstices latéraux (13) à l'intérieur de l'enveloppe 10 mais ne pénètre que trés partiellement en la partie basse 14 à l'intérieur 15 dudit mât 1 en raison de l'air contenu dans ledit intérieur 15 du mât 1.When the mast is in the deployed position as shown in FIG. 1 out of the water level 12, the latter penetrates through the lateral interstices (13) inside the envelope 10 but only very partially penetrates into the lower part 14 inside 15 of said mast 1 due to the air contained in said inside 15 of mast 1.
Lors de la descente du mât 1 et comme représenté figure 2, l'eau contenue dans l'enveloppe 10 est refoulée de manière inverse à l'extérieur en raison de l'air contenu à l'intérieur 15 du mât 1 durant sa descente empéchant ainsi tout contact direct de l'eau avec le moteur électrique 4.During the descent of the mast 1 and as shown in FIG. 2, the water contained in the casing 10 is pumped inversely to the outside due to the air contained inside the mast 1 during its descent preventing thus any direct contact of water with the electric motor 4.
Sans sortir du cadre de l'invention, le mât 1 peut avantageusement présenter différentes sections, circulaire, carrée, rectangulaire, etc, l'enveloppe 10 le recevant présentant une section adéquate, le moteur électrique 4 est alimenté en courant continu au moyen d'un transformateur extérieur ou couplé avec une batterie afin de pallier aux inconvénients d'une panne de courant. Il va de soi que l'alimentation du moteur 4 en courant électrique est réalisée au moyen d'un câble conducteur non représenté contenu de manière extensible à l'intérieur 15 du mât 1 et de l'enveloppe 10, de même l'enveloppe 10 peut être disposée dans un sol non immergé, les eaux de pluie par exemple qui peuvent pénétrer dans l'enveloppe étant expulsées de la façon précédemment décrite.Without departing from the scope of the invention, the mast 1 may advantageously have different sections, circular, square, rectangular, etc., the casing 10 receiving it having an adequate section, the electric motor 4 is supplied with direct current by means of an external transformer or one coupled with a battery in order to overcome the drawbacks of a power failure. It goes without saying that the power supply of the motor 4 is carried out by means of a conductive cable not shown, extensively contained inside 15 of the mast 1 and of the casing 10, likewise the casing 10 can be disposed in a non-submerged soil, rainwater for example which can penetrate into the envelope being expelled in the manner previously described.
Selon une variante notamment lorsque l'enveloppe 10 est intégralement immergée, le fond 17 peut être obturé ou laissé libre, I'eau contenue dans ladite enveloppe 10, lorsque le fond est libre, est refoulée durant le repli du mât 1 au travers dudit fond 17, une partie infime étant refoulée au travers des interstices latéraux 13. According to a variant in particular when the envelope 10 is fully submerged, the bottom 17 can be closed or left free, the water contained in said envelope 10, when the bottom is free, is driven back during the folding of the mast 1 through said bottom 17, a tiny part being pushed back through the lateral interstices 13.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9404904A FR2718781B1 (en) | 1994-04-15 | 1994-04-15 | Submerged telescopic mast. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9404904A FR2718781B1 (en) | 1994-04-15 | 1994-04-15 | Submerged telescopic mast. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2718781A1 true FR2718781A1 (en) | 1995-10-20 |
FR2718781B1 FR2718781B1 (en) | 1996-12-20 |
Family
ID=9462443
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9404904A Expired - Fee Related FR2718781B1 (en) | 1994-04-15 | 1994-04-15 | Submerged telescopic mast. |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2718781B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2748448A1 (en) * | 1996-05-09 | 1997-11-14 | France Etat | Radar support mast for submarine periscope |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB191106974A (en) * | 1910-11-25 | 1911-08-03 | Fontana Maste Und Traeger Ges | Improved Telescoping Tubular Masts. |
FR2199038A1 (en) * | 1972-09-08 | 1974-04-05 | Sharp Inc G | |
FR2386645A2 (en) * | 1977-04-05 | 1978-11-03 | Doris Dev Richesse Sous Marine | Offshore platform resting on undersea structure - incorporates column with sliding hollow cylindrical element which can be evacuated so as to rise and support the platform (BR 26.9.78) |
US5035094A (en) * | 1990-03-26 | 1991-07-30 | Legare David J | Nested extension/retraction structure and method of fabrication |
-
1994
- 1994-04-15 FR FR9404904A patent/FR2718781B1/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB191106974A (en) * | 1910-11-25 | 1911-08-03 | Fontana Maste Und Traeger Ges | Improved Telescoping Tubular Masts. |
FR2199038A1 (en) * | 1972-09-08 | 1974-04-05 | Sharp Inc G | |
FR2386645A2 (en) * | 1977-04-05 | 1978-11-03 | Doris Dev Richesse Sous Marine | Offshore platform resting on undersea structure - incorporates column with sliding hollow cylindrical element which can be evacuated so as to rise and support the platform (BR 26.9.78) |
US5035094A (en) * | 1990-03-26 | 1991-07-30 | Legare David J | Nested extension/retraction structure and method of fabrication |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2748448A1 (en) * | 1996-05-09 | 1997-11-14 | France Etat | Radar support mast for submarine periscope |
Also Published As
Publication number | Publication date |
---|---|
FR2718781B1 (en) | 1996-12-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse | ||
RN | Application for restoration | ||
FC | Decision of inpi director general to approve request for restoration | ||
ST | Notification of lapse |