FR2937356A1 - Telescopic floor element i.e. telescopic extension, for e.g. scaffolding field, has end fixed with traction cable, where translational movement of element is actuated by hand winch that is actuated by dismountable handle - Google Patents

Telescopic floor element i.e. telescopic extension, for e.g. scaffolding field, has end fixed with traction cable, where translational movement of element is actuated by hand winch that is actuated by dismountable handle Download PDF

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Publication number
FR2937356A1
FR2937356A1 FR0805862A FR0805862A FR2937356A1 FR 2937356 A1 FR2937356 A1 FR 2937356A1 FR 0805862 A FR0805862 A FR 0805862A FR 0805862 A FR0805862 A FR 0805862A FR 2937356 A1 FR2937356 A1 FR 2937356A1
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FR
France
Prior art keywords
actuated
cable
telescopic
winch
translational movement
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.)
Pending
Application number
FR0805862A
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French (fr)
Inventor
Xavier Marie Lombard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to FR0805862A priority Critical patent/FR2937356A1/en
Publication of FR2937356A1 publication Critical patent/FR2937356A1/en
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/15—Scaffolds primarily resting on the ground essentially comprising special means for supporting or forming platforms; Platforms
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/15—Scaffolds primarily resting on the ground essentially comprising special means for supporting or forming platforms; Platforms
    • E04G2001/157—Extensible platforms, e.g. telescopic platforms

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)

Abstract

The element i.e. telescopic extension (1), has an end fixed with a traction cable, where translational movement of the element is actuated by a hand winch (2). The cable forms round turns on a drum of the hand winch. A tightener with a spring is placed between an end of the cable and fixation of the cable to increase adherence of the cable on the drum. The winch is actuated by a dismountable handle (6) passing in a hole formed on a removable working floor.

Description

La présente invention a pour objet un élément de plancher télescopique utilisable dans le domaine de l'échafaudage, des passerelles d'accès et de circulation et tout domaine où il est nécessaire d'actionner un profilé guidé par des guides. The present invention relates to a telescopic floor element used in the field of scaffolding, access and circulation bridges and any area where it is necessary to operate a profile guided by guides.

Dans le domaine de la manutention ou de l'accès en hauteur, on connait des extensions télescopiques supportant des planchers amovibles qui permettent d'adapter la largeur d'un plancher de travail au profil d'une façade ou d'une construction. Ces extensions sont la plupart du temps actionnées manuellement en se penchant et donc en s'exposant au vide. Si elles sont commandées par un vérin, la mise en oeuvre d'un tel système est chère et les forces induites par les vérins peuvent avoir des conséquences sur la stabilité des planchers de travail. Dans l'invention on a résolu le problème en installant un treuil manuel sous le plancher. Suivant les figures 1 et 2, un câble de traction est fixé à une extrémité de l'extension télescopique (1), fait plusieurs tours morts autour du treuil (2), pour venir se refixer à l'autre bout de l'extension télescopique (3). Le treuil manuel est fixé sur la partie guidant l'extension, appelée guide ou fourreau (4) et a son axe de commande (5) orienté vers le haut (figures 2 et 4) de telle manière qu'à l'aide d'une manivelle (6) introduite dans un trou (7) du plancher aménagé à cet effet, on puisse faire tourner le tambour dans un sens ou dans l'autre, suivant le principe du va et vient. Un des perfectionnements de l'invention est de placer entre une extrémité du câble et sa fixation sur l'extension télescopique un tendeur (8) à lanterne ou un ressort (9) afin d'augmenter l'adhérence du câble sur le tambour. Un deuxième perfectionnement de l'invention est de munir le tambour, (figure 3) habituellement parfaitement circulaire, de facettes qui peuvent être constituées de barreaux concentriques dont le nombre peut être compris entre 2 et 8 par exemple (10). Ainsi on augmente considérablement l'adhérence du câble sur le treuil car l'élasticité du câble fait qu'il a tendance à vouloir rester le plus droit possible donc à avoir les rayons de courbure les plus grands alors qu'ils est contraint par des forces de traction qui le tendent d'angle à angle de facette. In the field of handling or access at height, telescopic extensions are known that support removable floors that make it possible to adapt the width of a work floor to the profile of a facade or a construction. These extensions are mostly manually operated by leaning and thus exposing themselves to vacuum. If they are controlled by a jack, the implementation of such a system is expensive and the forces induced by the jacks can have consequences on the stability of the work floors. In the invention the problem has been solved by installing a manual winch under the floor. According to FIGS. 1 and 2, a traction cable is fixed at one end of the telescopic extension (1), makes several turns around the winch (2), to come to rest at the other end of the telescopic extension (3). The manual winch is fixed on the extension guiding part, called guide or sheath (4) and has its control shaft (5) facing up (Figures 2 and 4) so that with the help of a crank (6) introduced into a hole (7) of the floor arranged for this purpose, it can rotate the drum in one direction or the other, according to the principle of going back and forth. One of the improvements of the invention is to place between an end of the cable and its attachment on the telescopic extension a tensioner (8) to lantern or a spring (9) to increase the adhesion of the cable on the drum. A second improvement of the invention is to provide the drum, (Figure 3) usually perfectly circular facets which may consist of concentric bars whose number may be between 2 and 8 for example (10). Thus, the adhesion of the cable to the winch is considerably increased because the elasticity of the cable makes it tend to want to remain as straight as possible so as to have the largest radii of curvature while they are constrained by forces pulling it from angle to facet angle.

Cette différence entre sa position en corde au repos et son placement en arc en traction crée une réserve de tension qui permet de conserver une très bonne adhérence bien que le câble ne soit pas parfaitement tendu. Un troisième perfectionnement de l'invention consiste à mettre en place des guides horizontaux qui permettent au câble d'entrée de rester à une extrémité du tambour (11) et au câble de sortie de rester à l'autre extrémité (12) de telle manière que les enroulements ne se chevauchent pas, ce qui aurait pour conséquence de bloquer la rotation du treuil. Un quatrième perfectionnement de l'invention consiste à motoriser le treuil.10 This difference between its rope position at rest and its arc placement in traction creates a reserve of tension which makes it possible to maintain a very good adhesion although the cable is not perfectly stretched. A third improvement of the invention is to set up horizontal guides which allow the input cable to remain at one end of the drum (11) and the output cable to remain at the other end (12) in such a manner. that the windings do not overlap, which would have the effect of blocking the rotation of the winch. A fourth improvement of the invention consists in motorizing the winch.

Claims (6)

REVENDICATIONS1) Elément télescopique caractérisé en ce que son mouvement de translation est actionné par un treuil manuel ou électrique CLAIMS1) Telescopic element characterized in that its translational movement is actuated by a manual or electric winch 2) Elément télescopique selon la revendication 1 caractérisé par le fait qu'un câble est fixé aux deux extrémités de l'extension et fait plusieurs tours morts autour du tambour du treuil 2) telescopic element according to claim 1 characterized in that a cable is attached to both ends of the extension and makes several turns around the drum of the winch 3) Elément télescopique selon la revendication 1 caractérisé par le fait qu'une ou deux extrémités du câble est équipé de tendeurs à ressort ou à lanterne 3) telescopic element according to claim 1 characterized in that one or two ends of the cable is equipped with spring tensioners or lantern 4) Elément télescopique selon la revendication 1 caractérisé par le fait que le tambour est équipé de facettes afin d'améliorer l'adhérence du câble 4) telescopic element according to claim 1 characterized in that the drum is equipped with facets to improve the adhesion of the cable 5) Elément télescopique selon la revendication 1 caractérisé par le fait que le treuil et actionné par une manivelle démontable passant dans un trou aménagé dans le plancher 5) telescopic element according to claim 1 characterized in that the winch and operated by a removable handle passing through a hole in the floor 6) Elément télescopique selon la revendication 1 caractérisé par le fait que le treuil est muni de guides qui empêchent les tours morts de se chevaucher. 6) telescopic element according to claim 1 characterized in that the winch is provided with guides that prevent the dead turns to overlap.
FR0805862A 2008-10-22 2008-10-22 Telescopic floor element i.e. telescopic extension, for e.g. scaffolding field, has end fixed with traction cable, where translational movement of element is actuated by hand winch that is actuated by dismountable handle Pending FR2937356A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0805862A FR2937356A1 (en) 2008-10-22 2008-10-22 Telescopic floor element i.e. telescopic extension, for e.g. scaffolding field, has end fixed with traction cable, where translational movement of element is actuated by hand winch that is actuated by dismountable handle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0805862A FR2937356A1 (en) 2008-10-22 2008-10-22 Telescopic floor element i.e. telescopic extension, for e.g. scaffolding field, has end fixed with traction cable, where translational movement of element is actuated by hand winch that is actuated by dismountable handle

Publications (1)

Publication Number Publication Date
FR2937356A1 true FR2937356A1 (en) 2010-04-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
FR0805862A Pending FR2937356A1 (en) 2008-10-22 2008-10-22 Telescopic floor element i.e. telescopic extension, for e.g. scaffolding field, has end fixed with traction cable, where translational movement of element is actuated by hand winch that is actuated by dismountable handle

Country Status (1)

Country Link
FR (1) FR2937356A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2481398A (en) * 2010-06-22 2011-12-28 Harsco Infrastructure Services Ltd Length adjustable platform system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US411824A (en) * 1889-10-01 Scaffold
US1774268A (en) * 1929-03-12 1930-08-26 Cephas W Eastman Extensible plank
BE734599A (en) * 1968-02-03 1969-12-01
FR2341716A1 (en) * 1976-02-20 1977-09-16 Ermi Retractable staircase fixed into two positions - consists of parallel girders on horizontal axle, with balustrade and two sets of steps
US4473916A (en) * 1982-02-24 1984-10-02 Gec Mechanical Handling Limited Access means
GB2167714A (en) * 1984-11-30 1986-06-04 British Petroleum Co Plc Emergency gangway

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US411824A (en) * 1889-10-01 Scaffold
US1774268A (en) * 1929-03-12 1930-08-26 Cephas W Eastman Extensible plank
BE734599A (en) * 1968-02-03 1969-12-01
FR2341716A1 (en) * 1976-02-20 1977-09-16 Ermi Retractable staircase fixed into two positions - consists of parallel girders on horizontal axle, with balustrade and two sets of steps
US4473916A (en) * 1982-02-24 1984-10-02 Gec Mechanical Handling Limited Access means
GB2167714A (en) * 1984-11-30 1986-06-04 British Petroleum Co Plc Emergency gangway

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2481398A (en) * 2010-06-22 2011-12-28 Harsco Infrastructure Services Ltd Length adjustable platform system
GB2481398B (en) * 2010-06-22 2012-05-16 Harsco Infrastructure Services Ltd A platform system

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