EP3538468B1 - Frein à câble, cabine d'ascenseur et ascenseur - Google Patents

Frein à câble, cabine d'ascenseur et ascenseur Download PDF

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Publication number
EP3538468B1
EP3538468B1 EP17793654.9A EP17793654A EP3538468B1 EP 3538468 B1 EP3538468 B1 EP 3538468B1 EP 17793654 A EP17793654 A EP 17793654A EP 3538468 B1 EP3538468 B1 EP 3538468B1
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EP
European Patent Office
Prior art keywords
brake
cable
braking
brake shoe
elevator system
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EP17793654.9A
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German (de)
English (en)
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EP3538468A1 (fr
Inventor
Josef Husmann
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Inventio AG
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Inventio AG
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    • 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
    • B66B5/24—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 acting on guide ropes or cables
    • 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

Definitions

  • the invention relates to a cable brake for an elevator system, an elevator car with a cable brake and an elevator system with a cable brake.
  • Brakes for braking an elevator car are known in various ways. From the prior art, for example, are from WO 03/002446 A1 or EP 0 651 724 B1 Known rope brakes that are fixedly mounted in the elevator shaft and interact with a rope that is moved with the elevator car.
  • Brakes can also be connected to the elevator car or to the counterweight of an elevator car and interact with a rail fixed in the elevator shaft, as for example in FIG EP15186504.5 (not yet published), or as a rope brake with a brake rope fixed immovably in the elevator shaft, as for example in DE 11 2011 104 744 T5 or U.S. 2,550,839 shown.
  • EP0651724 shows a cable brake in which a movable brake shoe is guided by a spring-loaded cam device.
  • the spring means is held in the open position by releasable locking means, for example a latch connected to an electrically actuable solenoid.
  • releasable locking means for example a latch connected to an electrically actuable solenoid.
  • the springs of the spring device are compressed, which is brought about by a piston-cylinder unit. When braking, part of the braking force has to be used to move the piston.
  • EP 1646575 discloses a cable brake in which a brake shoe coupled to a pivotably mounted lever can be moved back and forth between its braking position and its release position via a linear drive.
  • the linear drive can be coupled to an electromagnet.
  • the object is achieved by an elevator installation according to claim 1.
  • the brake cable is designed as a so-called standing cable, which is tensioned or fastened in the elevator shaft along the direction of travel of the elevator car.
  • a braking force caused by the cable brake is introduced into the brake cable and transferred to a building structure via the brake cable.
  • the brake cable is preferably attached in the upper area of the elevator shaft.
  • the brake cable is preferably fastened in the lower region of the elevator shaft, for example by means of a fastening clamp, a tension spring or a tension weight.
  • At least one first brake shoe can be moved for a movement of the braking surface between a braking position in which the cable can be pressed against the braking surface of the other brake shoe and a release position in which the cable between the brake shoes can be released.
  • a brake shoe is fixedly mounted and a brake shoe is movable relative to it.
  • the cable brake preferably comprises a releasable holding device which applies a holding force to the first brake shoe in the release position.
  • the cable brake has a resetting device, by means of which the first brake shoe can be transferred from the braking position into the release position.
  • the brake position is to be understood as a position of the brake in which the first brake shoe begins to clamp the cable between the brake shoes.
  • the resetting device is thus advantageously not designed to return the first brake shoe from the fully tensioned braking position.
  • the pivot arms are preferably hinged on the one hand rotatably to a cable brake housing and on the other hand rotatably connected to the first brake shoe.
  • the parallelogram is formed by the swivel arms and the connecting lines of the articulation points, on the one hand on the housing and on the other hand on the brake shoe.
  • the parallelogram lies in a plane that is parallel to the direction of the rope passage.
  • the braking surface of the first brake shoe thus always remains parallel to the direction of cable passage, and the braking surface therefore remains parallel to the other braking surface during the transition from the release position to the braking position.
  • the approach of the braking surfaces takes place evenly over the entire surface. This prevents the rope from pinching or squeezing.
  • the holding device comprises a switchable electromagnet which holds the first brake shoe in the release position, in particular when current is applied.
  • the lock can be released very quickly in the event of braking, without the need for a mechanical displacement of a bolt, for example. It is also excluded that there is a malfunction of a mechanical component, such as a break or jamming.
  • the holding device and the resetting device are separate devices. Therefore, the holding device can not only be actuated quickly, it can also be arranged completely independently of the resetting device.
  • the holding device can be arranged essentially in the same plane as the swivel arms forming the parallelogram.
  • the electromagnet can, for example, interact with an armature which is arranged on a swivel arm. This enables not only a compact but also a flat arrangement. This allows a rope brake to be attached between the elevator car and elevator shaft.
  • the brake shoes each have a braking surface and are preferably designed to brake precisely one rope.
  • they preferably have an extension that is longer in the direction of the cable feed-through than across it.
  • the brake shoes in particular have braking surfaces with a shape that is adapted to the shape of the cable.
  • the braking surfaces preferably have a partially cylindrical shape and are therefore suitable for a rope with a round diameter.
  • the swivel arms have a spring device which acts on the first brake shoe with a spring force in the braking position.
  • Each swivel arm is equipped with at least one brake spring, for example a disc spring or a package of disc springs.
  • the brake spring ensures that the brake shoes are still sprung against each other when there is contact with the cable and the brake shoes are pulled into the braking position by the friction with the cable. This prevents the rope from being squeezed.
  • the brake spring is pretensioned between two discs, for example.
  • the brake springs are preferably designed as brake pressure springs and the brake pressure is adjustable in each case.
  • the swivel arms are deflected by an angle with respect to a perpendicular to the cable feed-through direction, in particular in the assembled state by an angle with respect to the horizontal.
  • the swivel arms are deflected downwards in the release position, for example in the assembled state, when the rope brake is mounted on an elevator car and the car is to be prevented from falling.
  • the swivel arms can also be deflected upwards if upward acceleration is to be prevented.
  • the first brake shoe can be moved into the release position when the reset device is subjected to current. This can be done, for example, by means of a spindle motor or an air-pressure operated ram.
  • the resetting device preferably comprises a switchable lifting magnet.
  • the lifting magnet reacts immediately to a change in the application of current.
  • the resetting device can therefore be deactivated again very quickly, so that the brake shoes can immediately take up the braking position again.
  • the reset device is arranged in particular in such a way that it acts on a swivel arm.
  • a lifting magnet can be equipped with a lifting rod that presses on a counterpart on one of the swivel arms.
  • the resetting device no longer needs to be supplied with current, since the brake shoe is held in the release position by the holding device.
  • the reset device can be brought back into a position in which it does not hinder the transition of the brake shoe from the release position to the braking position. This is beneficial for a quick transition of the brake shoe into the braking position.
  • the resetting device can act on a different swivel arm than the holding device or it can act on the same swivel arm, but from an opposite side. Resetting device, holding device and swivel arms can thus be arranged essentially in one plane, which further favors the flat design of the rope brake.
  • the cable brake has a stop which is arranged so that in the braking position in which the cable is clamped between the brake shoes, at least one swivel arm and / or the first brake shoe rests against the stop.
  • the stop accordingly defines a certain limit position of the swivel arms and / or the first brake shoe, in which the swivel arms and the first brake shoe are also held under the influence of a frictional force which is brought about by a rope moved relative to the brake shoes.
  • the swivel arms can therefore not slip out of the braking position.
  • the pivot points of the swivel arms preferably form a rectangle in the braking position.
  • the swivel arms are directed in the direction of the perpendicular to the rope feed-through direction.
  • the articulation points on the brake shoes have the maximum distance from the articulation points on the cable brake housing and the parallelogram has its maximum extension.
  • the brake springs can optimally develop their braking force in the direction of the opposite brake shoe and thus in the direction of the cable.
  • the stop is particularly preferably arranged such that the parallelogram assumes an approximately rectangular position in the event of braking.
  • the holding device and / or the resetting device of the cable brake are preferably inactive in the case of braking, in particular when there is no current. If the power supply fails, the rope brake automatically switches to the braking position.
  • the holding device and the restoring device can be coupled to one another in such a way that the restoring device can only be activated, i.e. the first brake shoe can be transferred into a release position when the holding device is active, i.e. the holding device is ready, the first brake shoe in To hold the release position.
  • the cable brake comprises an electrical circuit which ensures that a switchable lifting magnet of the resetting device can only be supplied with current when the switchable electromagnet of the holding device is supplied with current. When the electromagnet is released, the lifting magnet is also de-energized.
  • the cable brake advantageously comprises a safety device, in particular a speed limiter, or can be coupled to a safety device, in particular a speed limiter.
  • the securing device is set up in such a way that it ensures that the holding device is released as soon as a predefinable or predefined speed is exceeded.
  • the electromagnet of the holding device can be activated by the safety device.
  • the reset device is also released with the interruption of the electromagnet.
  • the cable brake comprises a housing in which the brake shoes, the pivot arms, the holding device and the resetting device are arranged.
  • the housing can be connected to an elevator car so that the rope brake preferably interacts with a brake rope that is fixedly mounted in an elevator shaft.
  • a particularly preferred flat arrangement of the cable brake is made possible if the holding device and the resetting device, and possibly the stop, are arranged on a common housing plate on which the pivot arms are also articulated.
  • a fixed brake shoe can also be mounted on the same housing plate.
  • a cable brake is particularly advantageously provided with at least one feed spring which exerts a force on the first brake shoe in the direction of the braking position.
  • the feed spring is preferably mounted rotatably about an axis which is arranged parallel to the axes of rotation of the pivot arms.
  • the feed spring is pivoted on the one hand rotatably to a cable brake housing and on the other hand rotatably connected to the first brake shoe.
  • the feed spring can thus be arranged in essentially the same plane as the pivot arms forming the parallelogram and does not impair the flat structure of the cable brake.
  • the feed spring ensures that the first brake shoe moves in the direction of the braking position after the holding device is released.
  • the spring force of the feed spring has a force component in the direction of the cable feed-through.
  • feed springs arranged parallel to one another are provided.
  • the force in the direction of the braking position is thus distributed to the feed springs.
  • the spring forces are preferably designed so that in the event of a spring failure, for example in the event of a break, the remaining springs still apply a sufficiently large force to safely move the brake shoe.
  • each of the springs must apply at least 150% of the necessary force.
  • a spring force of at least 300%.
  • the required 150% of the necessary force is provided by the remaining three springs in the event of a spring failure.
  • the maximum available operating force when equipped with four springs therefore only corresponds to at least 200% of the necessary force.
  • the springs can be tension springs. Extension springs are inexpensive and do not require any additional guidance.
  • the feed spring is arranged in such a way that it is deflected by an feed angle in the release position relative to a perpendicular to the cable feed-through direction, and in the braking position by an angle that is smaller than the feed angle.
  • the feed springs can therefore be moved relatively easily from the braking position back into the release position, the force required for this increasing as the angle increases.
  • the cable brake comprises guide rollers for aligning the cable with respect to the brake shoes.
  • the guide rollers are preferably arranged in pairs along the cable feed-through direction and attached to the cable brake housing.
  • the guide rollers are particularly necessary when the cable brake is attached to an elevator car and interacts with a stationary brake cable.
  • the elevator car is generally guided in the elevator shaft, but the brake cable can nevertheless have a certain amount of play with respect to the elevator car.
  • the joining rollers ensure that the brake cable is always centered between the brake shoes.
  • the object is achieved by an elevator car with at least one rope brake as described above.
  • the rope brake is firmly connected to the elevator car.
  • the rope brake can be integrated into an outer wall of the elevator car.
  • the rope brake comprises a housing which is connected to a supporting structure of the elevator car, for example to the floor of the elevator car.
  • the rope brake is then easily accessible, for example for maintenance purposes.
  • An elevator car is preferably equipped with two rope brakes, which interact with stationary brake ropes provided on both sides of the elevator car.
  • the brake cables and thus the cable brakes can, for example, be arranged on opposite sides of the elevator car on a central or symmetry line of the elevator car, or they can be arranged along a diagonal line rotated relative to the central or symmetry line of the elevator car.
  • the arrangement is preferably such that the effect of a management force on the guide rails is minimal.
  • the braking force is evenly transferred to the elevator car when braking.
  • Elevator cars can be guided through the elevator shaft along guide ropes.
  • the elevator car is advantageously equipped with a rail guide.
  • the rail guide preferably comprises two guide elements. These can be arranged on the side of the elevator car or on a wall of the elevator car, which corresponds to a so-called " piggyback arrangement".
  • an elevator system with a rope brake as described above and / or an elevator car as described above and at least one brake rope that can be fixedly attached in an elevator shaft.
  • Two brake cables are typically provided in an elevator shaft for an elevator car.
  • the elevator system comprises hollow rails for guiding the elevator car.
  • the hollow rails can be arranged on opposite shaft walls or for a "piggyback arrangement" next to one another on a wall.
  • Unreinforced hollow rails are designed to guide the elevator car, but are not sufficiently pressure-resistant for braking. As a rule, they are significantly cheaper and easier to assemble than reinforced rails.
  • the object is also achieved by a method for braking an elevator car, in particular as described above, with a cable brake, in particular as described above, with the following steps.
  • a holding device is released and at least one first brake shoe changes from a release position into a braking position, with at least two rotatably mounted pivot arms connected to the brake shoe changing their position.
  • the swivel arms are arranged in a parallelogram, one side of which is parallel to the direction of rope passage.
  • the holding device is released by interrupting the power supply to an electromagnet.
  • the holding magnet acts, for example, on a counterpart that is attached to one of the swivel arms. If the holding force no longer acts on the swivel arms, the swivel arms typically change their position due to the spring force of feed springs which pull the first brake shoe in the direction of the braking position.
  • a limit position of the brake shoe is reached when the brake shoe or at least one of the swivel arms hits a stop.
  • Brake springs which are integrated in the swivel arms, for example, determine the pressure of the brake shoes on the rope. This force can be adjusted by adjusting the preload of the brake springs.
  • the brake shoes can be brought back into a release position.
  • the lifting magnet presses, for example, a brake shoe or a swivel arm back into a tensioned position in which the brake shoe or the swivel arm is held by the electromagnet.
  • a cable brake has always been assumed which works together with a preferably stationary cable or brake cable.
  • this can also be a rail brake with the same effect, which is then connected to a corresponding brake rail, preferably a correspondingly shaped guide rail cooperates.
  • a rail is then to be understood instead of the rope.
  • Figure 1 shows a cable brake 1 in the release position in a side view.
  • Figures 2 and 3 show the same rope brake 1 in the braking position.
  • the cable brake 1 comprises two brake shoes 2, 3, which have braking surfaces 4, 5 facing one another.
  • This in Figures 1-3 Brake cable 24 not explicitly shown (see Figures 4a, 4b , 5a, 5b ) can be carried out along a rope lead-through direction 6 between the braking surfaces 4, 5.
  • a first brake shoe 2 is connected to two rotatably mounted swivel arms 10a, 10b, which are arranged as a parallelogram, one side of which, for example the connection line of the articulation points on the brake shoe 2, is aligned parallel to the cable feed-through direction 6.
  • the first brake shoe 2 can be switched between a braking position in which the cable is pressed against the braking surface 5 of the other brake shoe 3 ( Figure 2 , and Figure 3 ), and a release position ( Figure 1 ), in which there is a sufficiently large distance 27 between the braking surfaces 4, 5 to release the rope, are moved.
  • the rope brake 1 has a releasable holding device 8, which applies a holding force to the first brake shoe 2 in the release position.
  • the holding device 8 comprises a switchable electromagnet 14 which, when energized, holds the first brake shoe 2 in the release position.
  • the electromagnet 14 interacts with an armature 28, which is attached to one of the pivot arms 10a and holds the pivot arms 10a, 10b at a deflection angle 33 relative to a perpendicular 13 to the cable feed-through direction 6 Swivel arms 10a, 10b can change their position. In the braking position, the articulation points of the pivot arms 10a, 10b form approximately a rectangle.
  • the change in position is brought about by, for example, four feed springs 19 which are arranged parallel to one another. They provide a force in the direction of the braking position.
  • the feed springs 19 are preferably rotatably mounted about an axis 29, which is parallel to axes of rotation 30 ( Fig. 3 ) the pivot arms 10a, 10b is arranged.
  • the feed springs 19 are deflected by an infeed angle 12a in relation to the vertical 13 to the cable feed-through direction 6 (in the assembled state in relation to the horizontal) and in the braking position by an angle 12b which is smaller than the infeed angle 12a.
  • the closing force component of the feed springs 19 is therefore smaller in the braking position, in which the frictional force of the rope is already acting, than in the release position.
  • the first brake shoe 2 can be transferred from the braking position into the release position by means of a restoring device 9.
  • the resetting device 9 comprises, for example, a switchable lifting magnet 15 which is in particular arranged such that it acts on a swivel arm 10a.
  • the electromagnet 14 and the lifting magnet 15 are preferably switched in such a way that they are de-energized when braking.
  • the electromagnet 14 and the lifting magnet 15 are preferably coupled, so that the lifting magnet 15 can only be energized when the electromagnet 14 is energized.
  • each swivel arm 10a, 10b has a spring device 7 which acts on the first brake shoe 2 with a spring force in the braking position.
  • each swivel arm 10a, 10b is each equipped with a brake spring 11, for example a pretensionable compression spring, in particular a disc spring or a package of disc springs.
  • the rope brake 1 has a stop 16 which is arranged such that at least the first brake shoe 2 rests against the stop 16 in the braking position.
  • the rope brake 1 can include a position sensor 34, via which it can be determined whether the rope brake 1 is in the braking position. If the use of the rope brake is detected via the position sensor 34, normal travel of the elevator can be prevented in this case.
  • the position sensor 34 can be designed as a switch which is actuated when a swivel arm 10b strikes the position sensor 34 in the braking position.
  • the rope brake 1 preferably comprises a housing plate 18 which, together with a cover not shown in the figure, forms a housing 17 (see FIG Figures 4a, 4b , 5a, 5b ) forms.
  • the pivot arms 10a, 10b are articulated to the housing plate and a brake shoe 3, the holding device 8 and the resetting device 9 are fixedly mounted.
  • Guide rollers 23 are also attached to the housing plate 18 to align the cable with respect to the brake shoes 2, 3.
  • the guide rollers 23 are elastically coupled to the brake shoe 3 by means of spring devices 35, so that the guide rollers 23 retreat when the brake cable is pressed against the brake shoe 3 can.
  • a holder 31 for fixing the feed springs 19 is provided on the housing plate 18.
  • Figure 4a shows a schematic representation of a first example of an elevator system 25 in a top view from above;
  • Figure 4b shows a schematic representation of the same example for an elevator installation 25 in a side view.
  • two hollow rails 26 are provided which are attached to two opposite walls.
  • the hollow rails are used to guide an elevator car 20.
  • the brake cables 24 are arranged along a diagonal line 36 rotated with respect to the center or symmetry line of the elevator car 32.
  • cable brakes 1 are attached to the elevator car 20.
  • the rope brakes 1 each include a housing 17 which is attached to a supporting structure of the elevator car 20, such as the floor 21 or a supporting frame.
  • Figure 5a shows a schematic representation of a second example of an elevator system 25 in a plan view from above
  • Figure 5b shows a schematic representation of the same example for an elevator installation 25 in a side view.
  • two hollow rails 26 are provided which are attached to a wall.
  • the hollow rails 26 serve to guide an elevator car 20 and interact with rail guides 22 which are attached to the elevator car 20.
  • the brake cables 24 are arranged on opposite sides of the elevator car 20 on the center or symmetry line 32 of the elevator car 20.
  • rope brakes 1 are attached to the elevator car 20.
  • the rope brakes 1 comprise a housing 17 which is fastened to the floor 21 or to a supporting structure of the elevator car 20.
  • the rope brake 1 has a very flat design, so that there is space next to an elevator car 20 even in a narrow elevator shaft.
  • the cable brake 1 can typically be used for brake cables 24 with diameters between 11 and 19 mm.
  • a pair of rope brakes can secure transport loads between 1000 and 2000kg.
  • the overall depth is only about four times the rope diameter and is largely determined by the components used, for example the diameter of the brake springs 11 or the electromagnet 15. For example, an overall depth of about 50mm with an overall height of more than 500mm is conceivable.

Claims (13)

  1. Ascenseur (25) doté d'au moins un frein à câble (1) pour un ascenseur (25) à câble de frein (24), comprenant au moins une paire de mâchoires de frein (2, 3) qui comportent des surfaces de freinage (4, 5) orientées l'une vers l'autre, dans lequel le câble de frein (24) peut être passé entre les surfaces de freinage (4, 5), dans lequel au moins une première mâchoire de frein (2) est déplaçable, pour un mouvement de la surface de freinage (4), entre une position de freinage, dans laquelle le câble peut être pressé contre la surface de freinage (5) de l'autre mâchoire de frein (3), et une position de libération dans laquelle le câble peut être libéré entre les mâchoires de frein (2, 3), comprenant un dispositif de retenue amovible (8) qui applique une force de retenue à la première mâchoire de frein (2) dans la position de libération, dans lequel le frein à câble (1) comprend en outre au moins deux bras pivotants (10a, 10b) montés en rotation, qui sont reliés à la première mâchoire de frein (2) et qui sont disposés dans un parallélogramme, dont un côté est orienté parallèlement à la direction de passage de câble (6), et le frein à câble (1) comprend en outre un dispositif de rappel (9) à l'aide duquel la première mâchoire de frein (2) peut être transférée de la position de freinage à la position de libération, caractérisé en ce que les mâchoires de frein (2, 3), les bras pivotants (10a, 10b), le dispositif de retenue (8) et le dispositif de rappel (9) sont disposés dans un boîtier (17), de préférence sur une plaque de boîtier (18) commune, et le boîtier (17) est relié à une cabine d'ascenseur (20), et le dispositif de retenue (8) et/ou le dispositif de rappel (9) sont inactifs en cas de freinage, en particulier ne sont pas alimentés, et au moins un câble de frein (24) qui peut être fixé ou est fixé dans une cage d'ascenseur.
  2. Ascenseur (25) selon la revendication 1, dans lequel le dispositif de retenue amovible (8) comprend un électroaimant commutable (14) qui, en particulier sous l'effet du courant, maintient la première mâchoire de frein (2) dans la position de libération.
  3. Ascenseur (25) selon l'une des revendications précédentes, dans lequel la première mâchoire de frein (2) peut être transférée dans la position de libération lorsque le courant est appliqué au dispositif de rappel (9).
  4. Ascenseur (25) selon l'une des revendications précédentes, dans lequel et le dispositif de rappel (9) comprend un aimant de levage commutable (15) qui est disposé en particulier de telle manière qu'il agisse sur un bras pivotant (10a).
  5. Ascenseur (25) selon l'une des revendications précédentes, dans lequel le frein à câble comprend une butée (16) disposée de telle manière qu'au moins un bras pivotant (10b) et/ou la première mâchoire de frein (2) bute contre la butée (16) dans la position de freinage
  6. Ascenseur (25) selon l'une des revendications précédentes, dans lequel le dispositif de retenue (8) et le dispositif de rappel (9) peuvent être accouplés l'un à l'autre de telle manière que le dispositif de rappel (9) ne puisse être activé que lorsque le dispositif de retenue (8) est actif.
  7. Ascenseur (25) selon l'une des revendications précédentes, dans lequel le frein à câble comprend au moins un ressort d'ajustage (19), en particulier plusieurs, de préférence quatre, ressorts d'ajustage (19) disposés parallèlement les uns aux autres, qui appliquent une force dans la direction de la position de freinage à la première mâchoire de frein (2), dans lequel le ressort d'ajustage (19) est un ressort de traction et est monté de préférence en rotation autour d'un axe disposé parallèlement aux axes de rotation des bras pivotants (10a, 10b).
  8. Ascenseur (25) selon la revendication 7, dans lequel le ressort d'ajustage (19) est disposé de telle manière qu'il soit dévié, dans la position de libération, d'un angle d'ajustage (12a) par rapport à une perpendiculaire (13) à la direction de passage de câble (6) et, dans la position de freinage, d'un angle (12b) inférieur à l'angle d'ajustage.
  9. Ascenseur (25) selon l'une des revendications précédentes, dans lequel le frein à câble comprend des rouleaux de guidage (23) pour aligner le câble par rapport aux mâchoires de frein (2, 3).
  10. Ascenseur (25) selon la revendication 1, dans lequel la cabine d'ascenseur (20) est équipée d'un rail de guidage (22).
  11. Ascenseur (25) selon la revendication 1 comportant des rails creux (26) pour guider la cabine d'ascenseur (20).
  12. Procédé de freinage d'une cabine d'ascenseur (20) selon l'une des revendications 1 ou 10, comprenant les étapes suivantes
    - le desserrage d'un dispositif de retenue (8),
    - le passage d'au moins une mâchoire de frein (2) d'une position de libération à une position de freinage, dans lequel au moins deux bras pivotants (10a, 10b) montés en rotation modifient leur position et sont disposés dans un parallélogramme dont un côté est orienté parallèlement à la direction de passage de câble (6), caractérisé en ce que l'alimentation en courant d'un électroaimant (14) est interrompue pour desserrer le dispositif de retenue (8).
  13. Procédé selon la revendication 12, caractérisé en ce que le contact entre la surface de freinage de la mâchoire de frein (2) et en ce que le câble de frein (24) entraîne une fermeture supplémentaire du frein à câble (1) au moyen de la force de frottement.
EP17793654.9A 2016-11-10 2017-11-03 Frein à câble, cabine d'ascenseur et ascenseur Active EP3538468B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16198242 2016-11-10
PCT/EP2017/078116 WO2018086989A1 (fr) 2016-11-10 2017-11-03 Frein à câble, cabine d'ascenseur et ascenseur

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EP3538468B1 true EP3538468B1 (fr) 2020-10-07

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US (1) US11661314B2 (fr)
EP (1) EP3538468B1 (fr)
CN (1) CN109963805B (fr)
AU (1) AU2017358502B2 (fr)
ES (1) ES2832730T3 (fr)
WO (1) WO2018086989A1 (fr)

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CN111532939A (zh) * 2020-04-30 2020-08-14 山西新富升机器制造有限公司 一种摩擦提升机钢丝绳智能防滑系统及控制方法
CN115215180A (zh) * 2021-04-15 2022-10-21 奥的斯电梯公司 电梯系统
CN113734932B (zh) * 2021-09-14 2023-05-05 台州富士电梯股份有限公司 钢丝绳制动器

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Publication number Publication date
US11661314B2 (en) 2023-05-30
CN109963805A (zh) 2019-07-02
ES2832730T3 (es) 2021-06-11
WO2018086989A1 (fr) 2018-05-17
AU2017358502B2 (en) 2020-10-29
AU2017358502A1 (en) 2019-05-23
BR112019008832A2 (pt) 2019-07-09
US20190276276A1 (en) 2019-09-12
CN109963805B (zh) 2021-02-26
EP3538468A1 (fr) 2019-09-18

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