EP1990072A1 - Moving anchoring carriage for lifeline - Google Patents
Moving anchoring carriage for lifeline Download PDFInfo
- Publication number
- EP1990072A1 EP1990072A1 EP07107688A EP07107688A EP1990072A1 EP 1990072 A1 EP1990072 A1 EP 1990072A1 EP 07107688 A EP07107688 A EP 07107688A EP 07107688 A EP07107688 A EP 07107688A EP 1990072 A1 EP1990072 A1 EP 1990072A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- carriage
- lever
- braking
- rail
- head
- 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.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/18—Devices for preventing persons from falling
- E06C7/186—Rail or rope for guiding a safety attachment, e.g. a fall arrest system
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
- A62B35/0043—Lifelines, lanyards, and anchors therefore
- A62B35/0056—Horizontal lifelines
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
- A62B35/04—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion incorporating energy absorbing means
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- 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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
- E04G21/3261—Safety-nets; Safety mattresses; Arrangements on buildings for connecting safety-lines
- E04G21/3295—Guide tracks for safety lines
Definitions
- the present invention generally relates to the field of personal protective equipment against falls from heights, and more specifically to anchoring carriages for rigid belay supports.
- Such a system typically comprises a rigid belay support (rail or other metal profile) and a mobile anchor carriage and secured to the rigid belay support.
- the user is connected to the carriage which has an automatic locking function and guide means along the rigid belay support.
- the carriage moves along the belay support, accompanying the movement of the user without requiring intervention of it, and automatically hangs on the belay support when a fall occurs.
- the document EP-A2-1 253,280 for example describes such a lifeline system.
- the rigid belay support is a vertical profiled element acting as rail and the mobile fall arrester is constituted by a sliding carriage along the vertical rail.
- the carriage comprises a body with wheels for its movement along the rail, and a braking cam pivotally mounted about an axis with a return spring.
- the cam comprises at its outer end an anchor point, and at the opposite end a claw adapted to pivot and rub against the flat rail to block the carriage.
- the claw is made of a material harder than the material of the rail, so that it penetrates the softer metal by leverage and thus blocks the carriage when a downward force is abruptly applied to the point of contact. anchorage.
- the locking means employs a pivoting cam, which requires a prior orientation of the carriage on the rail, and allows effective braking only when, during a fall, the force is applied in the rail axis, to the bottom. It will therefore be understood that when a user has climbed a rising edge of a roof and wishes to descend on the opposite (and therefore descending) face, it is necessary, at the top, to reorient the carriage on the rail or on another rail, so that it can block in the direction of the fall. Note also that with a cart of this type, the braking efficiency is reduced when the user makes a side drop relative to the rail (off the hard rail axis).
- the object of the present invention is to provide an improved carriage for such a rigid belay support, which does not include the disadvantages mentioned above.
- this objective is achieved by a carriage according to claim 1.
- a mobile anchor carriage (or mobile fall arrest device) for a rigid belay support such as a rail comprises a carriage body and means capable of guiding the carriage integrally on a support device. rigid belay.
- An automatic locking means allows the carriage to lock on the rigid belay support during a fall of a user.
- the blocking means comprises an actuating lever mounted by means of a link with at least two degrees of freedom, to which the user is connected in use, so as to cause the blockage of the cart during a fall.
- the actuating lever is pivotally mounted by means of a ball joint connection (three degrees of freedom).
- Such a mounting of the lever gives it a possibility of actuation during falls in the axis of the rail, but also out of the axis, and thus allows effective braking in a plurality of directions, and not only in the axis of rail down.
- the end of the lever is preferably mounted so that it is accessible from the upper face of the carriage (opposite to the rail).
- the lever is advantageously associated with a braking member of the locking means so that actuation (movement) of the lever caused by a force applying to the latter due to a fall, causes braking and blocking of the truck on the rail by means of the braking member.
- the locking means comprises a cavity in the carriage body open, in use, towards the belay support.
- the operating lever is received in a braking head housed in the cavity of the carriage body, the head and the cavity defining a ball joint.
- the locking means is designed so that the braking head can be pivoted, by the actuating lever, a rest position in a locking position in which it causes the braking of the carriage.
- the braking head is provided for friction braking and "wedge effect", so that such a locking position is obtained by pivoting the braking head, generated by the pivoting of the lever, by an angle sufficient outside the rest position, to engage the braking head against the rigid belay support.
- a means of use is provided for immobilizing the carriage when the lever is in the rest position.
- the actuating lever comprises a rod axially passing through the braking head and provided at its inner end, that is to say. rigid support side, a polymer buffer, elastic means being provided for, in use, elastically compressing the buffer towards the support.
- Other means of exerting a slight friction on the belay support may however be imagined by those skilled in the art, not necessarily associated with the lever.
- the lever is provided at its accessible end with an anchor point for a user or another load to ensure.
- the guide means secured to the carriage may be hollow rollers adapted to engage on guide portions of the belay support.
- the present invention provides an improved carriage, which provides effective braking when a fall occurs in different directions.
- the invention is based generally on the use of a lever with at least two degrees of freedom, which cooperates with a braking member controlled preferably in the same manner and with the same intensity by the lever whatever the direction in which it is operated.
- the braking member may be of the wedge type.
- the braking member may be of the retractable ratchet type which, during a fall, is raised as a result of the actuation of the lever and ensures a locking in resting on locking notches provided on the belay support.
- the present invention also relates to a lifeline system comprising the carriage defined above associated with a rail.
- a rail may typically be a metal section provided with a flat.
- the profile is hollow and fixed to the structure that it must equip by means of a fastener, the profile having a longitudinal opening towards the structure; and the fastener comprises an attachment end to the structure and another end inserted in the profile and having a shape corresponding substantially to the inner profile of the profile.
- the present carriage 10 comprises a carriage body 12 and means for guiding the carriage integrally on a rigid belay support formed by a rail 14.
- the carriage 12 comprises four hollow rollers 16 which cooperate with a plate 18 of the rail 14 and allow a displacement (sliding) guided and secured to the rail 14 (only the plate 18 is shown in dashed lines on the Fig.1 ).
- the carriage 10 also comprises a means for automatically blocking the carriage on the rail 14 during the fall of a user connected to the carriage 10.
- the locking means comprises an actuating lever, generally indicated 20, extending here to the outside of the side of the upper face 21 of the carriage, and advantageously pivotally mounted by a link with three degrees of freedom, to which the user is bound. This effectively actuates the locking of the carriage 10 during a fall in various directions, and not only when the fall is parallel to the rail 14 as is the case with the known devices.
- the free end of the lever 20 is preferably provided with a point or anchoring ring 22, to which the user attaches via eg. a lanyard whose other end is connected to its harness (not shown).
- the lever 20 cooperates with a braking head 24 adapted to pivot, following the actuation of the lever 20, and rub, here by its lower edge (corner) 26, against the flat 18 of the rail 14 and to thus block the carriage 10, performing a braking "corner effect".
- the braking head 24 is housed in a cavity 28 of the carriage body opening in a lower face 30 of the carriage body 12 and thus to the rail 14, the cavity 28 and the braking head 24 forming a ball joint type (spherical connection, ie having 3 degrees of freedom).
- the lever 20 is connected to the braking head 24 so that it is the spherical connection between the braking head 24 and the cavity 28 which allows pivoting with three degrees of freedom of the lever 20, and implies that a pivoting of the lever 20 causes pivoting of the braking head 24.
- the braking head 24 has an outer surface which is spherical at the top and tapered at the bottom.
- the cavity 28 defines a spherical housing on which pivots the spherical upper part of the braking head 24, and continues towards the rail by a conical clearance.
- the braking head 24 has a bell-shaped or domed shape, and its lower edge 26 therefore defines an annular braking edge or surface which comes into contact with the rail.
- the edge 26 should not be too rounded.
- the lever is inclined upwards, downwards or laterally, it is possible to engage the annular edge 26 of the head 24 against the rail 20.
- the head here has a configuration of symmetry of revolution, this characteristic n It is not critical to achieve cornering braking, and the skilled person may consider various geometries to achieve such braking by pivoting the head following the actuation of an associated lever.
- the carriage 10 comprises an immobilization means on the rail when there is no fall.
- This is achieved in the present embodiment by a specific mounting of the lever 20 in the braking head 24.
- the lever 20 comprises a rod 32 which passes axially through the head 24 and at its end, rail side 14, equipped with a buffer 34 of material polymer, preferably having good abrasion resistance such as polyurethane.
- This buffer 34 is elastically constrained towards the rail by a spring 36 housed in the braking head 24 and which rests on a shoulder 38 of the rod 32.
- the braking head 24 having a symmetry of revolution and the lever having the ability to pivot all around its rest position, it will be caused to pivot and thus to force the edge 26 of the head against the flat 18 of the rail. the case of a downward fall in the rail axis, but also laterally producing the same braking effect as in Fig.3 , so with the same efficiency.
- the design of the present carriage 10 also avoids modifying the orientation of the carriage in the event of a reversal of the slope of the rail, since it is able to provide an effective braking force in all directions of fall.
- Some parameters of the blocking means can be adjusted as needed. For example, one can use for the braking head 22 a metal more hard for the rail 14, which allows better penetration into the flat rail. One can also play on the force of the spring 36 to adjust the friction force to overcome for a simple movement of the carriage along the rail without braking.
- the maximum pivoting angle of the lever will also be adjusted by controlling the diameter of the opening 40 in the upper face 31 of the carriage body 12, and as a function of the dimensions of the braking head. This opening 40 may constitute an abutment which limits the penetration of the head 24 into the rail 14.
- a fastener 50 comprising a fastening flange 52 to a support structure 54 (for example a roof beam) and a portion 56 cooperating with the rail 14 for its maintenance.
- the portion 56 has a complementary profile of the internal space of the profiled rail 14.
- the portion 56 connects the flange through a longitudinal opening 58 in the rail 14.
- the fastener 50 is therefore put in place by introducing the portion 56 by the end of the rail 14, then it can be slid along the rail 14 to position it at the chosen location, before attaching it to the support structure 54 by means of one or more screws 60 (or other).
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- Architecture (AREA)
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- Health & Medical Sciences (AREA)
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- Emergency Lowering Means (AREA)
Abstract
Description
La présente invention concerne généralement le domaine des équipements de protection individuelle contre les chutes de hauteur, et plus spécifiquement les chariots d'ancrage pour supports d'assurage rigides.The present invention generally relates to the field of personal protective equipment against falls from heights, and more specifically to anchoring carriages for rigid belay supports.
Les systèmes d'antichute mobile incluant un support d'assurage rigide, plus communément appelés « lignes de vie », sont utilisés couramment depuis une quinzaine d'années. Installés à demeure ou de manière temporaire sur des immeubles ou autres structures nécessitant l'intervention de personnel de maintenance en hauteur, les systèmes de lignes de vie sont conçus pour protéger ce personnel contre les chutes tout en leur permettant une grande mobilité.Mobile fall arrest systems including a rigid belay support, more commonly known as "lifelines", have been in widespread use for about fifteen years. Installed permanently or temporarily on buildings or other structures requiring the intervention of maintenance personnel at height, the lifeline systems are designed to protect these personnel against falls while allowing them great mobility.
Un tel système comprend typiquement un support d'assurage rigide (rail ou autre profilé métallique) et un chariot d'ancrage mobile et solidaire du support d'assurage rigide. L'utilisateur est relié au chariot qui possède une fonction de blocage automatique et des moyens de guidage le long du support d'assurage rigide. Le chariot se déplace le long du support d'assurage, accompagnant le déplacement de l'utilisateur sans exiger d'intervention de celui-ci, et se bloque automatiquement sur le support d'assurage lorsqu'une chute se produit.Such a system typically comprises a rigid belay support (rail or other metal profile) and a mobile anchor carriage and secured to the rigid belay support. The user is connected to the carriage which has an automatic locking function and guide means along the rigid belay support. The carriage moves along the belay support, accompanying the movement of the user without requiring intervention of it, and automatically hangs on the belay support when a fall occurs.
Le document
Bien qu'un tel chariot soit largement utilisé, il présente des inconvénients dans certaines circonstances, et notamment lorsqu'il est utilisé sur des lignes de vies installées sur des constructions modernes. En effet, le moyen de blocage emploie une came pivotante, ce qui requiert une orientation préalable du chariot sur le rail, et permet un freinage efficace uniquement lorsque, lors d'une chute, la force est appliquée dans l'axe du rail, vers le bas. On comprendra donc que lorsqu'un utilisateur a gravi un pan ascendant d'une toiture et souhaite redescendre sur le pan opposé (donc descendant), il est nécessaire, au sommet, de réorienter le chariot sur le rail ou sur un autre rail, afin qu'il puisse bloquer dans le sens de la chute. On notera encore qu'avec un chariot de ce type, l'efficacité du freinage est réduite lorsque l'utilisateur fait une chute latérale par rapport au rail (hors de l'axe dur rail).Although such a cart is widely used, it has drawbacks in certain circumstances, especially when used on lines of lives installed on modern buildings. Indeed, the locking means employs a pivoting cam, which requires a prior orientation of the carriage on the rail, and allows effective braking only when, during a fall, the force is applied in the rail axis, to the bottom. It will therefore be understood that when a user has climbed a rising edge of a roof and wishes to descend on the opposite (and therefore descending) face, it is necessary, at the top, to reorient the carriage on the rail or on another rail, so that it can block in the direction of the fall. Note also that with a cart of this type, the braking efficiency is reduced when the user makes a side drop relative to the rail (off the hard rail axis).
L'objet de la présente invention est de proposer un chariot amélioré pour un tel support d'assurage rigide, qui ne comprend pas les désavantages mentionnés ci-dessus.The object of the present invention is to provide an improved carriage for such a rigid belay support, which does not include the disadvantages mentioned above.
Conformément à l'invention, cet objectif est atteint par un chariot selon la revendication 1.According to the invention, this objective is achieved by a carriage according to claim 1.
Selon l'invention, un chariot d'ancrage mobile (ou antichute mobile) pour un support d'assurage rigide tel qu'un rail comprend un corps de chariot et des moyens aptes à assurer le guidage du chariot de manière solidaire sur un support d'assurage rigide. Un moyen de blocage automatique permet le blocage du chariot sur le support d'assurage rigide lors d'une chute d'un utilisateur.According to the invention, a mobile anchor carriage (or mobile fall arrest device) for a rigid belay support such as a rail comprises a carriage body and means capable of guiding the carriage integrally on a support device. rigid belay. An automatic locking means allows the carriage to lock on the rigid belay support during a fall of a user.
Selon un aspect important de l'invention, le moyen de blocage comprend un levier d'actionnement monté au moyen d'une liaison à au moins deux degrés de liberté, auquel est relié l'utilisateur, en utilisation, de sorte à provoquer le blocage du chariot lors d'une chute. De préférence, le levier d'actionnement est monté pivotant au moyen d'une liaison rotule (trois degrés de liberté).According to an important aspect of the invention, the blocking means comprises an actuating lever mounted by means of a link with at least two degrees of freedom, to which the user is connected in use, so as to cause the blockage of the cart during a fall. Preferably, the actuating lever is pivotally mounted by means of a ball joint connection (three degrees of freedom).
Un tel montage du levier lui confère une possibilité d'actionnement lors de chutes dans l'axe du rail, mais également hors de l'axe, et permet donc un freinage efficace dans une pluralité de directions, et pas uniquement dans l'axe du rail vers le bas.Such a mounting of the lever gives it a possibility of actuation during falls in the axis of the rail, but also out of the axis, and thus allows effective braking in a plurality of directions, and not only in the axis of rail down.
Dans la pratique, l'extrémité du levier est de préférence montée de sorte qu'elle soit accessible depuis la face supérieure du chariot (opposée au rail). Le levier est avantageusement associé à un organe de freinage du moyen de blocage de sorte que l'actionnement (déplacement) du levier causé par une force s'appliquant sur ce dernier en raison d'une chute, provoque un freinage et blocage du chariot sur le rail au moyen de l'organe de freinage.In practice, the end of the lever is preferably mounted so that it is accessible from the upper face of the carriage (opposite to the rail). The lever is advantageously associated with a braking member of the locking means so that actuation (movement) of the lever caused by a force applying to the latter due to a fall, causes braking and blocking of the truck on the rail by means of the braking member.
Selon une variante, le moyen de blocage comprend une cavité dans le corps de chariot ouverte, en utilisation, vers le support d'assurage. Le levier d'actionnement est reçu dans une tête de freinage logée dans la cavité du corps de chariot, la tête et la cavité définissant une liaison rotule. Le moyen de blocage est conçu de sorte que la tête de freinage peut être pivotée, par le levier d'actionnement, d'une position de repos dans une position de blocage dans laquelle elle provoque le freinage du chariot. De préférence, la tête de freinage est prévue pour un freinage par frottement et « effet de coin », si bien qu'une telle position de blocage est obtenue en pivotant la tête de freinage, engendrée par le pivotement du levier, d'un angle suffisant en dehors de la position de repos, pour engager la tête de freinage contre le support d'assurage rigide.Alternatively, the locking means comprises a cavity in the carriage body open, in use, towards the belay support. The operating lever is received in a braking head housed in the cavity of the carriage body, the head and the cavity defining a ball joint. The locking means is designed so that the braking head can be pivoted, by the actuating lever, a rest position in a locking position in which it causes the braking of the carriage. Preferably, the braking head is provided for friction braking and "wedge effect", so that such a locking position is obtained by pivoting the braking head, generated by the pivoting of the lever, by an angle sufficient outside the rest position, to engage the braking head against the rigid belay support.
De préférence, un moyen d'utilisation est prévu pour immobiliser le chariot lorsque le levier est en position de repos. A cet effet, le levier d'actionnement comprend une tige traversant axialement la tête de freinage et munie à son extrémité intérieure, c.-à-.d. côté support rigide, d'un tampon polymère, des moyens élastiques étant prévus pour, en utilisation, contraindre élastiquement le tampon en direction du support. D'autres moyens d'exercer un léger frottement sur le support d'assurage pourront toutefois être imaginés par l'homme du métier, pas nécessairement associés au levier.Preferably, a means of use is provided for immobilizing the carriage when the lever is in the rest position. For this purpose, the actuating lever comprises a rod axially passing through the braking head and provided at its inner end, that is to say. rigid support side, a polymer buffer, elastic means being provided for, in use, elastically compressing the buffer towards the support. Other means of exerting a slight friction on the belay support may however be imagined by those skilled in the art, not necessarily associated with the lever.
Typiquement, le levier est muni à son extrémité accessible d'un point d'ancrage pour un utilisateur ou une autre charge à assurer.Typically, the lever is provided at its accessible end with an anchor point for a user or another load to ensure.
Les moyens de guidage solidaire du chariot peuvent être des galets creux aptes à s'engager sur des portions de guidage du support d'assurage.The guide means secured to the carriage may be hollow rollers adapted to engage on guide portions of the belay support.
On appréciera donc que la présente invention propose un chariot amélioré, qui permet un freinage efficace lorsqu'une chute se produit dans différentes directions. L'invention repose globalement sur l'utilisation d'un levier à au moins deux degrés de libertés, qui coopère avec un organe de freinage commandé de préférence de la même manière et avec la même intensité par le levier quelle que soit la direction dans laquelle il est actionné.It will be appreciated, therefore, that the present invention provides an improved carriage, which provides effective braking when a fall occurs in different directions. The invention is based generally on the use of a lever with at least two degrees of freedom, which cooperates with a braking member controlled preferably in the same manner and with the same intensity by the lever whatever the direction in which it is operated.
Comme discuté ci-avant, l'organe de freinage peut être du type à effets de coin. On peut toutefois envisager d'autres types de freinage/blocage, par exemple l'organe de freinage peut être du type à cliquet rétractable qui, lors d'une chute est mis en saillie suite à l'actionnement du levier et assure un blocage en venant en appui sur des encoches de blocage prévues sur le support d'assurage.As discussed above, the braking member may be of the wedge type. However, it is possible to envisage other types of braking / locking, for example the braking member may be of the retractable ratchet type which, during a fall, is raised as a result of the actuation of the lever and ensures a locking in resting on locking notches provided on the belay support.
Selon un autre aspect, la présente invention concerne également un système de ligne de vie comprenant le chariot défini ci-dessus associé à un rail. Un tel rail peut être typiquement un profilé métallique muni d'un plat.In another aspect, the present invention also relates to a lifeline system comprising the carriage defined above associated with a rail. Such a rail may typically be a metal section provided with a flat.
De préférence, le profilé est creux et fixé à la structure qu'il doit équiper au moyen d'une pièce de fixation, le profilé ayant une ouverture longitudinale vers la structure ; et la pièce de fixation comprend une extrémité de fixation à la structure et une autre extrémité insérée dans le profilé et ayant une forme correspondant substantiellement au profil intérieur du profilé.Preferably, the profile is hollow and fixed to the structure that it must equip by means of a fastener, the profile having a longitudinal opening towards the structure; and the fastener comprises an attachment end to the structure and another end inserted in the profile and having a shape corresponding substantially to the inner profile of the profile.
D'autres particularités et caractéristiques de l'invention ressortiront de la description détaillée d'un mode de réalisation avantageux présenté ci-dessous, à titre d'illustration, en se référant aux dessins annexés. Ceux-ci montrent:
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FIG.1 : une vue en perspective du dessous d'un mode de réalisation préféré du chariot selon l'invention ; -
FIG.2 : une vue en coupe partielle du chariot de laFig.1 en position de repos, guidé sur un rail incliné ; -
FIG.3 : une vue en coupe partielle du chariot de laFig.1 , en position de blocage lors d'une chute ; -
FIG.4 : vue du chariot sur son rail en section transversale, en position de repos.
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FIG.1 : a perspective view from below of a preferred embodiment of the carriage according to the invention; -
FIG.2 : a partial sectional view of the trolley of theFig.1 in the rest position, guided on an inclined rail; -
FIG.3 : a partial sectional view of the trolley of theFig.1 in blocking position during a fall; -
FIG.4 : view of the carriage on its rail in cross section, in the rest position.
Dans la variante illustrée aux Figures, le présent chariot 10 comprend un corps de chariot 12 et des moyens assurant le guidage du chariot de manière solidaire sur un support d'assurage rigide formé par un rail 14. A cet effet, le chariot 12 comprend quatre galets creux 16 qui coopèrent avec un plat 18 du rail 14 et permettent un déplacement (coulissement) guidé et solidaire du rail 14 (seul le plat 18 est représenté en tirets sur la
Le chariot 10 comprend également un moyen de blocage automatique du chariot sur le rail 14 lors de la chute d'un utilisateur relié au chariot 10. On appréciera que le moyen de blocage comprend un levier d'actionnement, généralement indiqué 20, s'étendant ici vers l'extérieur du côté de la face supérieure 21 du chariot, et avantageusement monté pivotant par une liaison à trois degrés de liberté, auquel est lié l'utilisateur. Cela permet d'actionner efficacement le blocage du chariot 10 lors d'une chute dans diverses directions, et pas seulement lorsque la chute se fait parallèlement au rail 14 comme c'est le cas avec les dispositif connus.The
L'extrémité libre du levier 20 est de préférence pourvue d'un point ou anneau d'ancrage 22, auquel l'utilisateur s'attache par l'intermédiaire par ex. d'une longe dont l'autre extrémité est reliée à son harnais (non représentés).The free end of the
Selon la présente variante, le levier 20 coopère avec une tête de freinage 24 apte à pivoter, suite à l'actionnement du levier 20, et frotter, ici par son bord (coin) inférieur 26, contre le plat 18 du rail 14 et à bloquer ainsi le chariot 10, réalisant un freinage par « effet de coin ».According to the present variant, the
Comme on le voit aux
Dans la présente variante la tête de freinage 24 a une forme générale en cloche ou dôme, et son bord inférieur 26 définit donc un bord ou surface de freinage annulaire qui vient en contact avec le rail. Afin de mieux mordre le plat 18 du rail 14, le bord 26 ne devrait pas trop être arrondi. Ainsi, que le levier soit incliné vers le haut, le bas ou latéralement, il est possible d'engager le bord annulaire 26 de la tête 24 contre le rail 20. Si la tête a ici une configuration de symétrie de révolution, cette caractéristique n'est pas critique pour réaliser le freinage par effet de coin, et l'homme du métier pourra envisager diverses géométries pour réaliser un tel freinage par pivotement de la tête suite à l'actionnement d'un levier associé.In the present variant, the
De préférence, le chariot 10 comprend un moyen d'immobilisation sur le rail lorsqu'il n'y a pas de chute. Cela est réalisé dans la présente exécution par un montage spécifique du levier 20 dans la tête de freinage 24. Comme on le voit bien sur la
Ainsi, dans la position de repos illustrée à la
Pour déplacer le chariot 10, il suffit d'exercer sur le levier 20 une traction globalement perpendiculaire au plat 18 du rail 14 pour décoller le tampon 34 et déplacer le chariot 10 le long du rail 14. Dans le cas d'un rail vertical, l'utilisateur pourra plus simplement déplacer le chariot en plaçant sa main sous le chariot et en poussant au fur et à mesure de sa progression. Dans le cas d'un rail incliné, faisant par exemple un angle de 10 à 30° par rapport à l'horizontale, l'utilisateur pourra exercer sur le levier 20 une traction globalement perpendiculaire au rail par l'intermédiaire de la longe qui le relie à l'anneau d'ancrage 22.To move the
On comprendra que lors d'une chute, la force exercée sur le levier 20 sera telle que celui-ci va pivoter entièrement et son bord inférieur 26 nécessairement frotter contre le plat 18 du rail 14, prenant une position de freinage telle qu'illustrée sur la
Toutefois, la tête de freinage 24 ayant une symétrie de révolution et le levier ayant la capacité de pivoter tout autour de sa position de repos, il sera amené à pivoter et donc à forcer le bord 26 de la tête contre le plat 18 du rail en cas d'une chute vers le bas dans l'axe du rail, mais également latéralement produisant le même effet de freinage qu'en
On pourra ajuster certains paramètres du moyen de blocage selon les besoins. Par exemple, on peut utiliser pour la tête de freinage 22 un métal plus dur que pour le rail 14, ce qui permet de mieux pénétrer dans le plat du rail. On peut également jouer sur la force du ressort 36 pour ajuster la force du frottement à vaincre pour un simple déplacement du chariot le long du rail, sans freinage. On ajustera par ailleurs l'angle de pivotement maximum du levier en contrôlant le diamètre de l'ouverture 40 dans la face supérieure 31 du corps de chariot 12, et en fonction des dimensions de la tête de freinage. Cette ouverture 40 peut constituer une butée qui limite la pénétration de la tête 24 dans le rail 14.Some parameters of the blocking means can be adjusted as needed. For example, one can use for the braking head 22 a metal more hard for the
On notera encore la présence sur la
Claims (12)
le profilé est creux et fixé à une structure au moyen d'une pièce de fixation, le profilé ayant une ouverture longitudinale vers la structure ; et
la pièce de fixation comprend une extrémité de fixation à la structure et une autre extrémité insérée dans le profilé et ayant une forme correspondant substantiellement au profil intérieur du profilé.System according to the preceding claim, wherein
the profile is hollow and fixed to a structure by means of a fastener, the profile having a longitudinal opening towards the structure; and
the fastener comprises a fastening end to the structure and another end inserted into the profile and having a shape corresponding substantially to the inner profile of the profile.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07107688A EP1990072A1 (en) | 2007-05-08 | 2007-05-08 | Moving anchoring carriage for lifeline |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07107688A EP1990072A1 (en) | 2007-05-08 | 2007-05-08 | Moving anchoring carriage for lifeline |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1990072A1 true EP1990072A1 (en) | 2008-11-12 |
Family
ID=38545366
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07107688A Withdrawn EP1990072A1 (en) | 2007-05-08 | 2007-05-08 | Moving anchoring carriage for lifeline |
Country Status (1)
Country | Link |
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EP (1) | EP1990072A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9517368B2 (en) | 2014-02-06 | 2016-12-13 | Capital Safety Group (Northern Europe) Limited | Entry/exit gate assembly of a fall protection system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1425172A (en) * | 1965-02-24 | 1966-04-04 | Safety locking device for climbing | |
EP1253280A2 (en) * | 2001-04-20 | 2002-10-30 | New Technelec S.A. | Device for a safety anchor |
-
2007
- 2007-05-08 EP EP07107688A patent/EP1990072A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1425172A (en) * | 1965-02-24 | 1966-04-04 | Safety locking device for climbing | |
EP1253280A2 (en) * | 2001-04-20 | 2002-10-30 | New Technelec S.A. | Device for a safety anchor |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9517368B2 (en) | 2014-02-06 | 2016-12-13 | Capital Safety Group (Northern Europe) Limited | Entry/exit gate assembly of a fall protection system |
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