EP0773181B1 - Dispositif de sécurité anti-chute pour un corps mobile - Google Patents
Dispositif de sécurité anti-chute pour un corps mobile 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
Links
Images
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)
- Control And Safety Of Cranes (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Elevator Door Apparatuses (AREA)
- Details Of Aerials (AREA)
- Telephone Function (AREA)
Description
Claims (10)
- Dispositif de sécurité permettant de stopper la chute accidentelle d'un corps mobile, comprenant deux éléments (1,3) 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 dit corps mobile, ces éléments comprenant un premier élément (1) et un second élément (3) en forme de boítier présentant un logement intérieur (5) disposé en regard du dit premier élément (1) et contenant au moins un organe tournant de serrage (10), le dit logement (5) présentant sur sa hauteur une partie de plus grande largeur dans laquelle est logé l'organe tournant de serrage (10) dans des conditions normales de fonctionnement et une partie de largeur réduite caractérisé en ce que l'organe tournant de serrage (10) s'engage par inertie dans la partie de la largeur réduite en cas de déplacement brutal du dit corps, l'organe tournant de serrage (10) pressant le premier élément (1) en assurant l'immobilisation du dit corps.
- Dispositif selon la revendication 1, caractérisé par un moyen de retenue élastique (11) qui, dans les conditions normales de fonctionnement, maintient l'organe tournant de serrage (10) dans le dit logement intérieur (5), et qui s'efface sous l'effet de l'inertie de l'organe tournant (10) en cas de déplacement brutal.
- Dispositif selon l'une quelconque des revendications 1 et 2, caractérisé en ce que le premier élément (1) est fixe, et le second élément (3) en forme de boítier étant solidaire du corps mobile.
- Dispositif selon l'une quelconque des revendications 1 et 2, caractérisé en ce que le second élément (3) en forme de boítier est fixe, le premier élément (1) étant solidaire du corps mobile.
- Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le dit premier élément (1) est constitué par un élément souple tel qu'une sangle.
- Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le dit premier élément (1) est constitué par un élément rigide tel qu'un rail.
- Dispositif selon la revendication 5 ou la revendication 6, caractérisé en ce que le dit premier élément (1) est constitué par un tube, le dit logement (5) du second élément (3) présentant plusieurs organes tournants de serrage (10) régulièrement répartis autour du dit premier élément (1).
- Dispositif selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le dit organe tournant de serrage (10) est constitué par un galet s'appuyant par sa périphérie sur le premier élément (1).
- Dispositif selon la revendication 8, caractérisé en ce que le dit moyen de retenue élastique (11) est constitué par un ressort taré agissant sur le galet (10) d'une part pour maintenir celui-ci dans la partie de plus grande largeur du logement (5) et d'autre part pour appliquer le galet (10) contre le premier élément (1).
- Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le dit logement (5) présente, à l'opposé du dit premier élément (1), une paroi présentant une partie verticale (8) se poursuivant par une partie (9) inclinée en direction du dit passage (4).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9513126 | 1995-11-07 | ||
FR9513126A FR2740854B1 (fr) | 1995-11-07 | 1995-11-07 | Dispositif de securite antichute pour un corps mobile |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0773181A1 EP0773181A1 (fr) | 1997-05-14 |
EP0773181B1 true EP0773181B1 (fr) | 2000-08-02 |
Family
ID=9484289
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96402350A Expired - Lifetime EP0773181B1 (fr) | 1995-11-07 | 1996-11-06 | Dispositif de sécurité anti-chute pour un corps mobile |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0773181B1 (fr) |
AT (1) | ATE195111T1 (fr) |
DE (1) | DE69609583T2 (fr) |
FR (1) | FR2740854B1 (fr) |
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 (fr) * | 1968-11-08 | 1970-07-20 | ||
US4333549A (en) * | 1980-06-25 | 1982-06-08 | Otis Elevator Company | Car blocking apparatus |
AT376952B (de) | 1983-03-21 | 1985-01-25 | Otis Elevator Co | Bremsfangvorrichtung |
FR2702464B1 (fr) * | 1993-03-10 | 1995-06-30 | Otis Elevator Co | Parachute de cabine d'ascenseur a reglage instantane et a autocentrage. |
-
1995
- 1995-11-07 FR FR9513126A patent/FR2740854B1/fr not_active Expired - Fee Related
-
1996
- 1996-11-06 AT AT96402350T patent/ATE195111T1/de not_active IP Right Cessation
- 1996-11-06 DE DE69609583T patent/DE69609583T2/de not_active Expired - Fee Related
- 1996-11-06 EP EP96402350A patent/EP0773181B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ATE195111T1 (de) | 2000-08-15 |
EP0773181A1 (fr) | 1997-05-14 |
FR2740854B1 (fr) | 1998-01-09 |
DE69609583D1 (de) | 2000-09-07 |
DE69609583T2 (de) | 2001-03-29 |
FR2740854A1 (fr) | 1997-05-09 |
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