EP2050706A1 - Dispositif de fixation - Google Patents

Dispositif de fixation Download PDF

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Publication number
EP2050706A1
EP2050706A1 EP07020114A EP07020114A EP2050706A1 EP 2050706 A1 EP2050706 A1 EP 2050706A1 EP 07020114 A EP07020114 A EP 07020114A EP 07020114 A EP07020114 A EP 07020114A EP 2050706 A1 EP2050706 A1 EP 2050706A1
Authority
EP
European Patent Office
Prior art keywords
holding
rail
holding element
retaining device
brake shoe
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.)
Granted
Application number
EP07020114A
Other languages
German (de)
English (en)
Other versions
EP2050706B1 (fr
Inventor
Hermann Gehrig
Dominik Helfer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cobianchi Liftteile AG
Original Assignee
Cobianchi Liftteile AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cobianchi Liftteile AG filed Critical Cobianchi Liftteile AG
Priority to EP07020114A priority Critical patent/EP2050706B1/fr
Priority to DE502007004586T priority patent/DE502007004586D1/de
Priority to AT07020114T priority patent/ATE475621T1/de
Publication of EP2050706A1 publication Critical patent/EP2050706A1/fr
Application granted granted Critical
Publication of EP2050706B1 publication Critical patent/EP2050706B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B17/00—Hoistway equipment
    • B66B17/34—Safe lift clips; Keps
    • 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
    • B66B5/0043—Devices enhancing safety during maintenance
    • B66B5/005—Safety of maintenance personnel
    • B66B5/0056—Safety of maintenance personnel by preventing crushing
    • B66B5/0075—Safety of maintenance personnel by preventing crushing by anchoring the elevator car or counterweight

Definitions

  • the invention relates to a holding device for conveying means, in particular elevator cars, with a support element to be fastened to the conveying element and holding elements which are intended to hold the conveying means against a rail arranged in a stationary manner parallel to the conveying path.
  • Numerous safety brakes are known from the prior art, which are intended to stop the journey of a conveyor, especially in emergency situations.
  • the existence of an emergency situation is usually determined by the fact that the subsidy exceeds a predetermined speed.
  • the known catch brakes have brake shoes which engage a rail arranged in a stationary manner parallel to the conveying path and bring the conveying means to a standstill by friction.
  • the invention does not relate to a safety brake, but to a holding device, which is effective after stopping a conveyor and has the task, the Forderstoff starting from the position in which it is after stopping an unwanted movement after a few centimeters hold.
  • conveying means in particular elevator cars
  • conveying means are held stationary only by the drive, usually a cable winch, which is equipped for this purpose with a friction brake.
  • a friction brake With such brakes, there is always some slip that depends on the load on the conveyor and the condition of the brake. For example, if the brake is oily, this can lead to undesirable "walking" of the conveyor when the drive is inactive. Unintentional movements of the conveyor are always a safety hazard. In the case of passenger or goods lifts, this risk is evident when the cab and / or landing doors are open and especially when loading and unloading the cab.
  • lift drives have recently been made increasingly compact, the number of systems increases in which waived a machine room and the drive is installed directly in the elevator shaft.
  • Known retaining devices which have the task of ensuring the alignment of a conveyor to a building part, for example the floor of a floor, during loading or unloading of the conveyor are based on a positive connection, for example by engaging a displaceably arranged on the conveyor bolt in a building-fixed opening.
  • the obvious disadvantage of such retaining devices is that they are effective only in predefined positions of the conveyor. For example, as soon as an elevator car is stopped between two floors, such a holding device can not fulfill its function.
  • the present invention is based on the object to propose a retaining device, which can be simple, inexpensive and compact and can be activated in any position of the conveyor.
  • the object is achieved according to the invention in that at least a first holding element containing at least one permanent magnet movable in the conveying direction relative to the support element and by a drive between a release position in which it is spaced from the rail, and a holding position in which it the rail abuts, is movable, that at least a second holding element is pivotally mounted on the support member and that between the first holding member and the second holding member coupling means are arranged, with which the second holding element by a movement of the first holding member relative to the support member for engaging the rail can be brought.
  • the permanent magnet equipped with the first holding element requires only a single drive movement to bring it to the release position or the holding position and retains this position even in the event of a power failure.
  • the permanent magnet protects the rail. Since two retaining elements are present, the retaining device can be designed and operated such that the second retaining element only becomes active when the conveying means travels an undesired path. It is particularly advantageous that the second holding element is activated during a power failure, if the first holding element is in the holding position.
  • the second holding element is activated only when an undesirable slip actually occurs at the drive of the conveyor. For smaller movements, which inevitably occur, for example, during loading and unloading of the conveyor, the second holding element is not activated.
  • the second holding element has a lever which is pivotable about a pivot axis perpendicular to the longitudinal axis of the rail and spaced therefrom and which carries at least one brake shoe at its free end.
  • the second holding member is wedged in the manner of an eccentric and pressed the more strongly to the rail, the higher the force exerted by the conveyor on the retaining device force and the rail is thus always claimed only as strong as necessary.
  • two brake shoes are arranged symmetrically to a plane lying in the pivot axis at the free end of the lever.
  • the locking device is bidirectionally effective, that is, it is capable of preventing unwanted movements of the conveyor in both directions.
  • a particular embodiment of the bidirectionally effective retaining device provides that the coupling means comprise spring means which center the coupling means with respect to the first and / or second retaining element in a central position, such that said play is present in two opposite directions.
  • the activation of the second holding element occurs in both load directions of the conveyor only when an inadmissible slip occurs.
  • the brake shoe or each brake shoe elevations such as teeth for engagement in the rail.
  • the brake shoe or each brake shoe is pivotally mounted on the lever about a further pivot axis arranged parallel to the pivot axis, an absolutely parallel engagement of the braking surface of the brake shoe is achieved on the rail.
  • the first holding element is formed in pairs and contains at least two permanent magnets, which are arranged opposite one another such that they receive the rail between them and thus pinch in the holding position.
  • the second holding element is formed in pairs and two levers are arranged opposite one another such that they clamp the rail between them thus clamped like a pincer with activated second holding element.
  • guide means for guiding the retaining device are arranged on the rail on the support element. These guide means ensure an always constant distance of the holding elements to the rail.
  • a lift cabin fastening means are provided according to a further embodiment of the support member which are movable relative to the support member transversely to the conveying direction to allow the elevator car a certain movement transverse to the rail.
  • the drive has a preferably electrically operated motor, in particular a geared motor. This can be realized in a simple manner that the first retaining element retains its position in the event of a power failure, and that the relatively large force required to release the permanent magnets from the rail is applied.
  • Fig. 1 schematically shows parts of an embodiment for illustrating the function of the device according to the invention.
  • the device is intended to be attached to a conveyor, for example a lift cage. An example of the way this attachment will be presented later on Fig. 3 explained.
  • a conveyor for example a lift cage.
  • FIG. 1 shown position corresponds to the mounting position on a vertical elevator.
  • an intermediate part 2 is received vertically displaceable.
  • This intermediate part 2 carries a pair of first holding elements 3, which in Fig. 1 is shown schematically as a type of pliers.
  • the first holding elements 3 each contain a permanent magnet 4 and are movable towards and away from each other by means of a drive 5.
  • the first holding elements 3 are intended to be a stationary rail, the in Fig.
  • the permanent magnets 4 preferably contain at least one material from the group of rare earths, for example neodymium.
  • the drive 5 is preferably an electric drive, which is designed so that it is at an interruption the energy supply remains self-locking in the position in which it is currently located.
  • FIG. 1 Top in Fig. 1 is a pair of second support members 6 can be seen, which are each pivotable about a fixedly arranged on the support member 1 pivot axis 8.
  • Each of the second holding elements 6 consists of a lever 7, at the free end of which two brake shoes 9 intended for engagement with the rail are arranged and is guided by centering springs 10 in the in FIG Fig. 1 shown position held.
  • two brake shoes 9 are arranged on each retaining element 6, one being directed upwards and the other downwards.
  • the holding device acts both in the conveying direction downwards and upwards, as will become clear hereinafter in the description of the function of the holding device.
  • the geometry of the second holding elements 6 and their spacing on the support element 1 are chosen so that in the in Fig. 1 shown position the brake shoes 9 do not touch the rail.
  • the levers 7 are deflected out of their central rest position in a manner to be described, the brake shoes corresponding to the instantaneous loading direction of the elevator cabin come into contact with the rail.
  • the levers 7 of the second holding elements 6 each carry a pin 18 which engages in a slot 17 of an elongated release member 16.
  • the latter receives in a central, vertical bore a relative to the trigger member 16 slidable rod 11, which in turn is connected to the intermediate part 2.
  • the way that the rod 11 can travel vertically in the trigger part 16 is limited at the top by a spring 15 and a plate 13 and at the bottom by a spring 14 and a plate 12.
  • the springs 14 and 15 simultaneously cause the intermediate part 2 in the in Fig. 1 shown neutral position is held when the retaining device is not activated.
  • the device further comprises Fig. 1 Not shown guide means, with which it is guided on the rail.
  • Fig. 1 Locking device When the car is at a standstill, whether on the occasion of a regular stop on a floor or an extraordinary stop triggered by a passenger, a service person or the controller, the detention device is activated by a stop Signal of the lift control brought into a standby state.
  • the permanent magnets 4 are brought to bear on the rail by the drive 5 and the strong magnetic forces with which the permanent magnets 4 are pulled against the rail, cause the first holding elements 3 and the intermediate part 2 connected to them by frictional force on the Rail are held.
  • the standby state is triggered either automatically by the lift control or for example by a service engineer by means of a key switch.
  • the ready state can be canceled at any time by the drive 5, the first holding elements 3 away from the rail.
  • the second holding elements 6 remain in their in Fig. 1 shown neutral position in which the brake shoes 9 do not come into contact with the rail.
  • the tolerance range is given by the springs 14 and 15 and by the distances of the plates 12 and 13 and is for example 30 mm. In this tolerance range, the support element 1 and all parts firmly connected to it can move up and down relative to the intermediate part 2 clamped to the rail by the first retaining elements 3.
  • the triggering part 16 is displaced vertically by the rod 11 such that the second holding elements 6 are displaced from their neutral center position.
  • the second holding elements 6 are deflected upward with respect to the support element 1 and mutatis mutandis, the second holding elements 6 are deflected downward with respect to the support member 1 in a movement of the cabin.
  • the lower or upper brake shoes 9 on the rail to the plant after which the second holding elements 6 are increasingly pressed against the rail in a further, the same direction.
  • the holding force developed by the retaining device is dependent on the displacement force imposed on the cabin, and an unnecessary load on the rail is avoided.
  • the movement of the lever 7 of the second holding elements 6 through in the Fig. 1 limited stops not shown.
  • the thus engaged state of the holding device is detected by detectors, not shown, and transmitted to the lift control, the lift is disabled and an alarm is triggered.
  • the engaged condition can only be lifted by an authorized person.
  • FIG. 2 and 3 is a concrete exemplary embodiment of the retaining device according to the invention shown in perspective.
  • One recognizes the plate-shaped support element 1 and the vertically displaceable in this intermediate part 2.
  • Fig. 1 is in the Fig. 2 and 3 drawn the rail and designated 20.
  • the retaining device is guided on the rail 20 by two side guides 23, the interchangeable sliding elements 24 may contain a material having a low coefficient of friction, for example, tetrafluoroethylene.
  • the side guides 23 or the sliding elements 24 can be arranged interchangeable.
  • holding blocks 26 are connected to the support member 1, with which slide rails 25 are held horizontally displaceable on the support element 1.
  • the slide rails 25 At both ends of the slide rails 25 each have a mounting flange 27 is provided for connection to the elevator car.
  • the first holding elements 3 with their permanent magnets 4 are arranged horizontally and at right angles to the support element 1 aligned pivot axes 22 pivotally mounted on the intermediate part 2.
  • the drive 5 On the opposite side of the intermediate part 2, visible in Fig. 3 , The drive 5 is mounted, which may be formed for example by a DC motor with integrated gear.
  • the second holding elements 6 are in Fig.
  • the coupling means are constructed somewhat differently in this embodiment than in the schematic diagram according to Fig. 1 , from also existing rod 11 is in Fig. 2 only a small area to see.
  • the Zentrierfedem 10 of the lever 7 of the second holding elements 6 and the centering of the first holding elements 3 by the springs 14, 15 are combined in a Teleskopstabelement with two return springs whose outer return springs, according to the springs 10, in the example in Fig. 3 are recognizable.

Landscapes

  • Cage And Drive Apparatuses For Elevators (AREA)
  • Manipulator (AREA)
  • Braking Arrangements (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
EP07020114A 2007-10-15 2007-10-15 Dispositif de fixation Active EP2050706B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP07020114A EP2050706B1 (fr) 2007-10-15 2007-10-15 Dispositif de fixation
DE502007004586T DE502007004586D1 (de) 2007-10-15 2007-10-15 Festhaltevorrichtung
AT07020114T ATE475621T1 (de) 2007-10-15 2007-10-15 Festhaltevorrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07020114A EP2050706B1 (fr) 2007-10-15 2007-10-15 Dispositif de fixation

Publications (2)

Publication Number Publication Date
EP2050706A1 true EP2050706A1 (fr) 2009-04-22
EP2050706B1 EP2050706B1 (fr) 2010-07-28

Family

ID=39226802

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07020114A Active EP2050706B1 (fr) 2007-10-15 2007-10-15 Dispositif de fixation

Country Status (3)

Country Link
EP (1) EP2050706B1 (fr)
AT (1) ATE475621T1 (fr)
DE (1) DE502007004586D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU92027B1 (en) * 2012-06-21 2013-12-23 Khalil Mahmoud Abu Al-Rubb Lift safety mechanism
WO2024149464A1 (fr) * 2023-01-12 2024-07-18 Kone Corporation Support de guidage de pont de protection, pont de protection et procédé de guidage d'un pont de protection

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5467850A (en) * 1993-12-16 1995-11-21 Otis Elevator Company Permanent magnet, magnetodynamic safety brake for elevators and the like
EP1067084A1 (fr) * 1999-06-25 2001-01-10 Inventio Ag Dispositif et méthode pour éviter les glissements et les oscillations verticales sur des appareils de prise de charge pour des installations de transport vertical
EP1739045A1 (fr) * 2004-03-29 2007-01-03 Mitsubishi Denki Kabushiki Kaisha Methode d'excitation d'actionneur et circuit d'excitation d'actionneur

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5467850A (en) * 1993-12-16 1995-11-21 Otis Elevator Company Permanent magnet, magnetodynamic safety brake for elevators and the like
EP1067084A1 (fr) * 1999-06-25 2001-01-10 Inventio Ag Dispositif et méthode pour éviter les glissements et les oscillations verticales sur des appareils de prise de charge pour des installations de transport vertical
EP1739045A1 (fr) * 2004-03-29 2007-01-03 Mitsubishi Denki Kabushiki Kaisha Methode d'excitation d'actionneur et circuit d'excitation d'actionneur

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU92027B1 (en) * 2012-06-21 2013-12-23 Khalil Mahmoud Abu Al-Rubb Lift safety mechanism
WO2013189993A1 (fr) * 2012-06-21 2013-12-27 WATTERSON, Peer Marten John Mécanisme de sécurité d'ascenseur
US9556003B2 (en) 2012-06-21 2017-01-31 Khalil Mahmoud ABU AL-RUBB Lift safety mechanism
WO2024149464A1 (fr) * 2023-01-12 2024-07-18 Kone Corporation Support de guidage de pont de protection, pont de protection et procédé de guidage d'un pont de protection

Also Published As

Publication number Publication date
DE502007004586D1 (de) 2010-09-09
EP2050706B1 (fr) 2010-07-28
ATE475621T1 (de) 2010-08-15

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