EP0773181B1 - Anti-fall security device for a movable body - Google Patents
Anti-fall security device for a movable body Download PDFInfo
- Publication number
- EP0773181B1 EP0773181B1 EP96402350A EP96402350A EP0773181B1 EP 0773181 B1 EP0773181 B1 EP 0773181B1 EP 96402350 A EP96402350 A EP 96402350A EP 96402350 A EP96402350 A EP 96402350A EP 0773181 B1 EP0773181 B1 EP 0773181B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- roller
- rotating member
- constituted
- movable body
- 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.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
- B66B5/22—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by means of linearly-movable wedges
Definitions
- the present invention relates to a device designed to automatically block the movement of accidentally falling mobile body.
- the invention applies in particular to stopping the fall of a movable, tilting or vertical movement, without it being anything limiting because the invention can find applications in many other areas.
- a fall arrest system that includes a tension spring kept in balance by the tension of the suspension chains. Breaking accidental of a chain controls the pivoting, under the action of a torsion spring, a cleat which engages in one of the holes presented by the slide guide channels.
- Such a system has the disadvantage to be imposing, constraining in dimensions, and ensure blocking only at the rate of the pitch of the holes arranged in the slide.
- a progressive safety device used to stop a cabin or counterweight elevator.
- This device includes a housing fixed to the cabin or counterweight and receiving a fixed guide rail.
- the housing has a brake pad on one side of the rail and, on the other side, a set of springs defining a narrowed area with the rail.
- a roller is placed at inside the narrowed area and is connected to a regulator linked to the cabin or counterweight.
- the regulator pulls the roller upwards from the narrowed area pushing it between the spring and the rail, which press the rail against the brake shoe. Due to spring elasticity, immobilization due to the action of the device is only progressive.
- This known device ensuring only one progressive immobilization, cannot be used for applications where security requires immediate immobilization.
- this device requires a regulator which complicates the realization and significantly increases its cost.
- the object of the present invention is to remedy the drawbacks presented by the devices known above mentioned and it proposes for this purpose a fall protection system which, while of simple design and implementation, of a weak cost and reduced footprint, is of great reliability by ensuring an immediate and effective blocking of accidental fall of the moving body.
- the security device anti-fall is characterized in that it comprises two elements with relative sliding movement one by relation to the other, one of these elements being fixed and the other being integral with the movable body, these elements comprising a first element and a second element in form of housing having an interior housing arranged opposite said first element and containing at minus a rotating clamping member, the said housing presenting on its height a part of greater width in which the rotating clamping member is held by elastic retaining means and a part of reduced width in which the rotating member of tightening engages by inertia, against the action of the said retaining means, in the event of a sudden fall of said body, the rotating clamping member pressing said first element ensuring the immobilization of said body.
- the first element can be fixed and the second element is integral with the body mobile. Conversely, the first element can move by being linked to the movable body, the second element being fixed.
- the first element can be housed in a vertical slot in the second element and slide into this slot, tightening by triggering of the rotating member pressing the first element against the wall of the slot.
- the first element can be fixed, being for example constituted by a strap. It can also be rigid by being constituted for example by a rail.
- the first element can also be a tube.
- the interior housing of the second element may include radially several rotating clamping members which are evenly distributed around the periphery of the tube to simultaneously ensure effective clamping.
- the organ tightening turn consists of a roller which, rest, is maintained in the bottom of the enlarged part of the housing and in contact by its periphery with the first element under the action of a calibrated spring.
- the inertia of the clamping roller causes, against the action of the calibrated spring, the engagement of the roller in the narrowed part of the housing and the immediate stop of the relative sliding movement of the first and second elements.
- a strap anchored at its upper end to a fixed part 2 and along which can slide vertically a housing 3 secured to a movable element such as a door (not shown in drawing).
- Strap 1 slides in a slot internal vertical 4 of the housing 3, so that one of the sides of strap 1 either facing part full vertical of the housing 3, while part of the opposite face of the strap 1 is opposite a recessed internal housing 5 of the housing 3.
- the housing 5 is limited by lower 6 and upper 7 walls horizontal and, opposite the strap 1, by a vertical bottom wall 8 continuing with a inclined upper wall 9 approaching the strap 1.
- a roller 10 is placed inside the housing 5 so that, in the rest position (as shown in Figure 1), this roller 10 rests on the lower wall 6.
- a calibrated spring 11 presses on the roller 10 to hold it against the lower wall 6 and against the strap 1.
- the device has been described by way of example as comprising a housing wedging element sliding along a strap fixed, but without departing from the invention, one could provide a fixed box inside which slides a movable strap.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Emergency Lowering Means (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Control And Safety Of Cranes (AREA)
- Elevator Door Apparatuses (AREA)
- Telephone Function (AREA)
- Details Of Aerials (AREA)
Abstract
Description
La présente invention concerne un dispositif de sécurité destiné à bloquer automatiquement le mouvement de chute accidentelle d'un corps mobile.The present invention relates to a device designed to automatically block the movement of accidentally falling mobile body.
L'état de la technique le plus proche est vu dans le document FR-A-2,702,464.The closest prior art is seen in document FR-A-2,702,464.
L'invention s'applique en particulier à l'arrêt de la chute d'une porte mobile, basculante ou à mouvement vertical, sans que cela ne soit en rien limitatif car l'invention peut trouver des applications dans bien d'autres domaines.The invention applies in particular to stopping the fall of a movable, tilting or vertical movement, without it being anything limiting because the invention can find applications in many other areas.
On a proposé, en relation avec des portes verticales ou basculantes dont le tablier est attelé de chaque côté à une chaíne sans fin commandant son ouverture et sa fermeture, un système antichute qui comprend un ressort de traction maintenu en équilibre par la tension des chaínes de suspension. La rupture accidentelle d'une chaíne commande le pivotement, sous l'action d'un ressort de torsion, d'un taquet qui s'engage dans l'un des trous présentés par la glissière de guidage des chaínes.We proposed, in relation to doors vertical or tilting whose deck is hitched each side to an endless chain controlling its opening and closing, a fall arrest system that includes a tension spring kept in balance by the tension of the suspension chains. Breaking accidental of a chain controls the pivoting, under the action of a torsion spring, a cleat which engages in one of the holes presented by the slide guide channels.
Un tel système présente l'inconvénient d'être imposant, contraignant en dimensions, et de n'assurer un blocage qu'au rythme du pas des trous ménagés dans la glissière.Such a system has the disadvantage to be imposing, constraining in dimensions, and ensure blocking only at the rate of the pitch of the holes arranged in the slide.
Il est aussi connu, par le brevet français N° 2 543 122, un dispositif de sécurité progressive servant à arrêter une cabine ou un contrepoids d'ascenseur. Ce dispositif comprend un carter fixé à la cabine ou au contrepoids et recevant un rail-guide fixe. Le carter présente d'un côté du rail un patin de frein et, de l'autre côté, un ensemble de ressort définissant une zone rétrécie avec le rail. Un galet est placé à l'intérieur de la zone rétrécie et est relié à un régulateur lié à la cabine ou au contrepoids. Quand l'ascenseur prend une vitesse excessive, le régulateur tire le galet vers le haut de la zone rétrécie en poussant celui-ci entre le ressort et le rail, ce qui applique le rail contre le patin de frein. En raison de l'élasticité des ressorts, l'immobilisation due à l'action du dispositif n'est que progressive.It is also known, by the French patent No. 2,543,122, a progressive safety device used to stop a cabin or counterweight elevator. This device includes a housing fixed to the cabin or counterweight and receiving a fixed guide rail. The housing has a brake pad on one side of the rail and, on the other side, a set of springs defining a narrowed area with the rail. A roller is placed at inside the narrowed area and is connected to a regulator linked to the cabin or counterweight. When the elevator takes an excessive speed, the regulator pulls the roller upwards from the narrowed area pushing it between the spring and the rail, which press the rail against the brake shoe. Due to spring elasticity, immobilization due to the action of the device is only progressive.
Ce dispositif connu, n'assurant qu'une immobilisation progressive, n'est pas utilisable pour les applications où la sécurité demande une immobilisation immédiate. De plus, pour sa mise-en-oeuvre, ce dispositif nécessite un régulateur ce qui complique la réalisation et augmente sensiblement son coût.This known device, ensuring only one progressive immobilization, cannot be used for applications where security requires immediate immobilization. In addition, for its implementation, this device requires a regulator which complicates the realization and significantly increases its cost.
La présente invention a pour objet de remédier aux inconvénients présentés par les dispositifs connus mentionnés ci-dessus et elle propose à cet effet un dispositif de sécurité antichute qui, tout en étant de conception et de réalisation simples, d'un faible coût et d'un encombrement réduit, est d'une grande fiabilité en assurant un blocage immédiat et efficace de la chute accidentelle du corps mobile.The object of the present invention is to remedy the drawbacks presented by the devices known above mentioned and it proposes for this purpose a fall protection system which, while of simple design and implementation, of a weak cost and reduced footprint, is of great reliability by ensuring an immediate and effective blocking of accidental fall of the moving body.
Selon l'invention, le dispositif de sécurité anti-chute se caractérise en ce qu'il comprend deux éléments à mouvement de coulissement relatif l'un par rapport à l'autre, l'un de ces éléments étant fixe et l'autre étant solidaire du corps mobile, ces éléments comprenant un premier élément et un second élément en forme de boítier présentant un logement intérieur disposé en regard du dit premier élément et contenant au moins un organe tournant de serrage, le dit logement présentant sur sa hauteur une partie de plus grande largeur dans laquelle l'organe tournant de serrage est maintenu par un moyen de retenue élastique et une partie de largeur réduite dans laquelle l'organe tournant de serrage s'engage par inertie, contre l'action du dit moyen de retenue, en cas de chute brutale du dit corps, l'organe tournant de serrage pressant le dit premier élément en assurant l'immobilisation du dit corps.According to the invention, the security device anti-fall is characterized in that it comprises two elements with relative sliding movement one by relation to the other, one of these elements being fixed and the other being integral with the movable body, these elements comprising a first element and a second element in form of housing having an interior housing arranged opposite said first element and containing at minus a rotating clamping member, the said housing presenting on its height a part of greater width in which the rotating clamping member is held by elastic retaining means and a part of reduced width in which the rotating member of tightening engages by inertia, against the action of the said retaining means, in the event of a sudden fall of said body, the rotating clamping member pressing said first element ensuring the immobilization of said body.
Selon l'invention le premier élément peut être fixe et le second élément est solidaire du corps mobile. Inversement, le premier élément peut se déplacer en étant lié au corps mobile, le second élément étant fixe.According to the invention the first element can be fixed and the second element is integral with the body mobile. Conversely, the first element can move by being linked to the movable body, the second element being fixed.
Selon une forme de réalisation, le premier élément peut être logé dans une fente verticale du second élément et coulisser dans cette fente, le serrage par déclenchement de l'organe tournant pressant le premier élément contre la paroi de la fente.According to one embodiment, the first element can be housed in a vertical slot in the second element and slide into this slot, tightening by triggering of the rotating member pressing the first element against the wall of the slot.
Le premier élément peut être fixe, en étant par exemple constitué par une sangle. Il peut aussi être rigide en étant constitué par exemple par un rail. Le premier élément peut aussi être un tube.The first element can be fixed, being for example constituted by a strap. It can also be rigid by being constituted for example by a rail. The first element can also be a tube.
Lorsque le premier élément est un tube, le logement intérieur du second élément peut comporter radialement plusieurs organes tournants de serrage qui sont régulièrement répartis sur la périphérie du tube pour assurer simultanément un serrage efficace.When the first element is a tube, the interior housing of the second element may include radially several rotating clamping members which are evenly distributed around the periphery of the tube to simultaneously ensure effective clamping.
Selon une réalisation préférée, l'organe tournant de serrage est constitué par un galet qui, au repos, est maintenu dans le fond de la partie élargie du logement et en contact par sa périphérie avec le premier élément sous l'action d'un ressort taré. Sous l'effet de la secousse due au déclenchement de la chute du corps, l'inertie du galet de serrage (à laquelle s'ajoute l'effet d'entraínement dû au premier élément) provoque, contre l'action du ressort taré, l'engagement du galet dans la partie rétrécie du logement et l'arrêt immédiat du mouvement relatif de coulissement des premier et second éléments.According to a preferred embodiment, the organ tightening turn consists of a roller which, rest, is maintained in the bottom of the enlarged part of the housing and in contact by its periphery with the first element under the action of a calibrated spring. Under the influence of the shaking due to the triggering of the fall of the body, the inertia of the clamping roller (to which is added the training effect due to the first element) causes, against the action of the calibrated spring, the engagement of the roller in the narrowed part of the housing and the immediate stop of the relative sliding movement of the first and second elements.
Pour bien faire comprendre le dispositif de
sécurité selon l'invention on en décrira ci-après, à
titre d'exemple sans caractère limitatif, une forme
d'exécution préférée en référence au dessin schématique
annexé dans lequel :
En référence au dessin on a représenté en 1
une sangle, ancrée à son extrémité supérieure sur une
partie fixe 2 et le long de laquelle peut coulisser
verticalement un boítier 3 solidaire d'un élément mobile
tel par exemple qu'une porte (non représentée au
dessin).With reference to the drawing we have represented in 1
a strap, anchored at its upper end to a
La sangle 1 coulisse dans une fente
verticale interne 4 du boítier 3, de façon que l'une des
faces de la sangle 1 soit en regard d'une partie
verticale pleine du boítier 3, tandis qu'une partie de
la face opposée de la sangle 1 se trouve en regard d'un
logement interne évidé 5 du boítier 3. Le logement 5 est
limité par des parois inférieure 6 et supérieur 7
horizontales et, à l'opposé de la sangle 1, par une
paroi inférieure verticale 8 se poursuivant par une
paroi supérieure inclinée 9 se rapprochant de la
sangle 1.Strap 1 slides in a slot
internal vertical 4 of the
Un galet 10 est placé à l'intérieur du
logement 5 de façon que, en position de repos (comme
représenté à la figure 1), ce galet 10 repose sur la
paroi inférieure 6. Un ressort taré 11 appuie sur le
galet 10 pour le maintenir contre la paroi inférieure 6
et contre la sangle 1.A
Lors du déplacement normal de la porte, le
boítier 3 coulisse sans effort le long de la sangle 1,
le galet 10 tournant sur lui-même en raison de son
frottement sur la sangle 1, tout en restant maintenu au
fond du logement 5 sous l'action du ressort 11.During normal door movement, the
En cas d'une chute brutale de la porte, par
exemple à la suite de sa désolidarisation de son support
ou d'un élément d'équilibrage, un mouvement brutal de
descente est appliqué au boítier 3. Sous l'impulsion de
la force d'inertie, aidée par l'adhérence à la sangle 1,
le galet 10 repousse le ressort 11 (dont le tarage a été
calculé en conséquence) et remonte à l'intérieur du
logement 5 (voir figure 2) en pressant, sous l'effet de
coin qui lui est appliqué par la paroi inclinée 9, la
sangle 1 contre la face arrière de la fente 4 et en
bloquant ainsi le boítier 3, et la porte qui lui est
solidaire, sur la sangle 1.In the event of a sudden fall of the door, by
example following its separation from its support
or a balancing element, a sudden movement of
descent is applied to the
Après réparation de la porte, on remet sans difficulté le dispositif de sécurité en position de repos par une simple inversion du sens de déplacement de l'élément mobile qui est immédiatement apte à remplir à nouveau sa fonction de sécurité. Le dispositif est donc réutilisable de nombreuses fois.After repairing the door, we return without difficulty the safety device in position rest by simply reversing the direction of movement of the movable element which is immediately capable of filling at again its safety function. The device is therefore reusable many times.
On comprendra que la description ci-dessus a été donnée à simple titre d'exemple, sans caractère limitatif, et que des adjonctions ou des modifications constructives pourraient y être apportées sans sortir du cadre de l'invention.It will be understood that the above description has was given as an example, without character limiting, and that additions or modifications could be made without leaving the part of the invention.
On comprendra en particulier qu'on a décrit le dispositif de sécurité selon l'invention comme associé à une porte, mais qu'il pourrait être associé à tout autre élément mobile susceptible de subir une chute accidentelle.We will understand in particular that we have described the safety device according to the invention as associated with a door but that it could be associated with any other mobile element liable to fall accidental.
On comprendra aussi que le dispositif a été décrit à titre d'exemple comme comprenant un boítier à élément de coincement coulissant le long d'une sangle fixe, mais que sans sortir de l'invention, on pourrait prévoir un boítier fixe à l'intérieur duquel coulisse une sangle mobile.It will also be understood that the device has been described by way of example as comprising a housing wedging element sliding along a strap fixed, but without departing from the invention, one could provide a fixed box inside which slides a movable strap.
Claims (10)
- Safety device allowing the accidental fall of a movable body to be stopped, comprising two elements (1, 3) which move in a sliding manner relative to each other, one of the elements being fixed and the other being integral with the movable body, those elements comprising a first element (1) and a second element (3) in the form of a casing having an internal housing (5) which is arranged opposite the first element (1) and which contains at least one tightening rotating member (10), the housing (5) having over its height a wider portion, in which the tightening rotating member (10) is positioned under normal operating conditions, and a portion of reduced width, characterised in that the tightening rotating member (10) is engaged by means of inertia in the portion of reduced width in the event of abrupt displacement of the body, the tightening rotating member (10) pressing the first element (1), ensuring the immobilisation of the body.
- Device according to claim 1, characterised by a resilient retention means (11) which, under normal operating conditions, maintains the tightening rotating member (10) in the internal housing (5) and which becomes inoperative under the effect of the inertia of the rotating member (10) in the event of abrupt displacement.
- Device according to either claim 1 or 2, characterised in that the first element (1) is fixed, the second element (3) in the form of a casing being integral with the movable body.
- Device according to either claim 1 or 2, characterised in that the second element (3) in the form of a casing is fixed, the first element (1) being integral with the movable body.
- Device according to any one of claims 1 to 4, characterised in that the first element (1) is constituted by a flexible element, such as a strap.
- Device according to any one of claims 1 to 4, characterised in that the first element (1) is constituted by a rigid element, such as a rail.
- Device according to claim 5 or 6, characterised in that the first element (1) is constituted by a tube, the housing (5) of the second element (3) having several tightening rotating members (10) which are distributed regularly around the first element (1).
- Device according to any one of claims 1 to 7, characterised in that the tightening rotating member (10) is constituted by a roller which presses at its periphery on the first element (1).
- Device according to claim 8, characterised in that the resilient retention means (11) is constituted by a calibrated spring which acts on the roller (10), on the one hand in order to maintain the roller (10) in the wider portion of the housing (5) and, on the other hand, in order to apply the roller (10) against the first element (1).
- Device according to any one of the preceding claims, characterised in that the housing (5) has, opposite the first element (1), a wall which has a vertical portion (8) which extends by means of a portion (9) which is inclined in the direction of the passage (4).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9513126 | 1995-11-07 | ||
| FR9513126A FR2740854B1 (en) | 1995-11-07 | 1995-11-07 | FALL PROTECTION DEVICE FOR A MOBILE BODY |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0773181A1 EP0773181A1 (en) | 1997-05-14 |
| EP0773181B1 true EP0773181B1 (en) | 2000-08-02 |
Family
ID=9484289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96402350A Expired - Lifetime EP0773181B1 (en) | 1995-11-07 | 1996-11-06 | Anti-fall security device for a movable body |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0773181B1 (en) |
| AT (1) | ATE195111T1 (en) |
| DE (1) | DE69609583T2 (en) |
| FR (1) | FR2740854B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7097003B2 (en) | 2003-07-21 | 2006-08-29 | The Peelle Company Ltd. | Elevator landing door broken chain safety device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2897920A (en) * | 1958-01-28 | 1959-08-04 | Dresser Ind | Emergency brake for elevator cars |
| FR1599823A (en) * | 1968-11-08 | 1970-07-20 | ||
| US4333549A (en) * | 1980-06-25 | 1982-06-08 | Otis Elevator Company | Car blocking apparatus |
| AT376952B (en) | 1983-03-21 | 1985-01-25 | Otis Elevator Co | BRAKE CONTROL DEVICE |
| FR2702464B1 (en) * | 1993-03-10 | 1995-06-30 | Otis Elevator Co | PARACHUTE OF ELEVATOR CAB WITH INSTANTANEOUS ADJUSTMENT AND SELF-CENTERING. |
-
1995
- 1995-11-07 FR FR9513126A patent/FR2740854B1/en not_active Expired - Fee Related
-
1996
- 1996-11-06 AT AT96402350T patent/ATE195111T1/en not_active IP Right Cessation
- 1996-11-06 DE DE69609583T patent/DE69609583T2/en not_active Expired - Fee Related
- 1996-11-06 EP EP96402350A patent/EP0773181B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE69609583D1 (en) | 2000-09-07 |
| DE69609583T2 (en) | 2001-03-29 |
| FR2740854A1 (en) | 1997-05-09 |
| ATE195111T1 (en) | 2000-08-15 |
| FR2740854B1 (en) | 1998-01-09 |
| EP0773181A1 (en) | 1997-05-14 |
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