EP2855327B1 - Dampening unit for a lift - Google Patents
Dampening unit for a lift Download PDFInfo
- Publication number
- EP2855327B1 EP2855327B1 EP13724609.6A EP13724609A EP2855327B1 EP 2855327 B1 EP2855327 B1 EP 2855327B1 EP 13724609 A EP13724609 A EP 13724609A EP 2855327 B1 EP2855327 B1 EP 2855327B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- damping unit
- brake shoe
- brake
- unit according
- brake shoes
- 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.)
- Not-in-force
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/02—Cages, i.e. cars
- B66B11/026—Attenuation system for shocks, vibrations, imbalance, e.g. passengers on the same side
- B66B11/0293—Suspension locking or inhibiting means to avoid movement when car is stopped at a floor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/36—Means for stopping the cars, cages, or skips at predetermined levels
- B66B1/365—Means for stopping the cars, cages, or skips at predetermined levels mechanical
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B17/00—Hoistway equipment
- B66B17/34—Safe lift clips; Keps
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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
Definitions
- the invention relates to a damping unit for an elevator.
- Lifts contain cabs which are movable via suspension means, for example in the form of suspension ropes or carrying straps, by means of a drive unit in an elevator shaft.
- suspension means for example in the form of suspension ropes or carrying straps
- drive unit in an elevator shaft.
- guide rails are fixed, which specify a linear guide for the elevator car.
- Persons or goods that enter or leave the elevator car during a car standstill cause undesirable vertical vibrations of the car due to the elasticity of the suspension elements.
- Such vertical vibrations occur in particular on lifts on suspension straps based on suspension, which enjoy in recent times growing popularity. Since belts have a less favorable vibration behavior compared to steel cables, the vertical vibrations increasingly affect the comfort feeling of the passengers and the operational safety.
- the device has a brake caliper, which can be pressed against the guide rail via a toggle mechanism. At the front ends of the lever of the brake caliper brake shoes are arranged. This device causes a frictional caused more or less rigid adherence of the car to the guide rails. In practice, however, it has been found that such retaining devices are demanding in terms of the control technology. In particular, it is difficult or expensive to operate the elevator in such a way that after the cabin stoppage the car can start smoothly.
- a damping unit for the reduction of vertical vibrations of the car in standstill phases shows, for example, the EP 1 424 302 A1 .
- the damping unit has an approximately half the cabin depth extending lever arm, at the free end of a pivotally mounted brake shoes is arranged.
- the damping unit is mechanically coupled to a door opening unit of the cabin; this activatable via the door drive damping unit requires a complicated Lever and transmission mechanism, which is why this solution is expensive and prone to failure.
- the device can not be retrofitted into existing existing older elevator systems. Another disadvantage then is that the damping behavior of the cabin does not meet higher demands in terms of ride comfort and reliability.
- the damping unit should also be suitable for installation in existing systems. Such a retrofit of the elevator installation should be possible simply and with comparatively low costs.
- the preferably equipped with two brake shoes damping unit includes brake shoe holder, which are operatively connected to move the brake shoes with an actuator.
- the brake shoes are movable in a rest position during a cabin ride contactless along a guide rail. After activation of the actuator, which is geared to the brake shoe holders, the brake shoes held by the brake shoe holders are pressed against the guide rail during the car stoppage in an active position.
- the damping unit further comprises a housing or other support structure (for example in the form of a simple support plate) for the brake shoe holder.
- the spring device is designed as a bending spring made of metal.
- the spiral spring can be designed such that it can only be deflected in two dimensions. Bending springs also have the advantage that they are easily connectable both to the support structure and to the cab. Bend springs can also be produced easily and inexpensively. Finally, bending springs can be optimally adapted to the desired degrees of freedom.
- the spring device is formed by a cross-sectionally approximately C-shaped box-like profile.
- a C-profile With such a C-profile, the desired two-dimensionally resilient mounting of the support structure can be achieved in an advantageous manner.
- the C-shaped profile can be arranged or positioned in the damping unit such that the profile longitudinal direction of the C-profile runs parallel to the braking surfaces of the brake shoes.
- a further advantage of such a spring device is that the cavity predetermined by the C can be used to completely or partially accommodate a guide shoe, as a result of which compact elevator cars with comparatively low overall heights can be realized.
- the spring device may have a fastening section on or resting on the carrier structure for fastening the carrier structure and two side walls which are opposite each other and preferably adjoin the attachment section approximately at right angles. Next can connect to the side walls in each case parallel to the attachment portion extending end portions, via which the damping unit can be fastened to the cabin.
- the end portions may have attachment means for attaching the spring unit to the cabin, for example in the form of holes for receiving screws.
- each brake shoe is supported in each case via at least one spring element resiliently on the respective brake shoe holder.
- the additional cushioning of the brake shoes results in a further optimized behavior of the cabin during standstill phases.
- spring elements are in particular metallic spring means.
- the spring element may be a helical compression spring.
- the damping unit may have one, two or even a plurality of helical compression springs per brake shoe.
- the brake shoes are arranged limitedly displaceable on the brake shoe holders.
- To limit the displacement of the brake shoe holder may be equipped with appropriate stops.
- the brake shoes can be attached to support elements or rest on these.
- the support elements may be made of a metallic material, for example made of steel.
- the spring elements can abut the support elements on one side.
- the spring elements can abut on one side on the brake shoe holders and on the other side on the support elements.
- the actuator comprises a preferably electrically driven motor.
- This motor can be configured, for example, as a stepping motor with which the desired pressing force for reducing the vertical vibrations of the cabin can be adjusted with high precision.
- the damping unit for moving both brake shoes has a common motor with which the brake shoe holder are preferably simultaneously, but in the opposite direction movable.
- the damping unit may have a carrier structure formed, for example, by a housing, on which the brake shoe holders are arranged and preferably mounted displaceably. In the latter case, the direction of displacement would be transverse to the running or driving direction of the cabin.
- the damping unit may comprise an eccentric arrangement, via which the brake shoes are movable back and forth. Thanks to the eccentric arrangement can be adjusted in a particularly simple and efficient way, the rest position and active position of the brake shoe holder.
- the eccentric mechanism allows precise and at the same time simple loading of the braking surface with a pressing force with high power transmission to reduce the vertical vibrations of the elevator car in standstill phases, which small actuators (eg electric motor) can be used.
- An advantageous geared connection between brake shoe holders and actuator results when the actuator is connected via a gear transmission with the brake shoe holders.
- the gear transmission may be formed, for example, as a spur gear and have a subsequent to a drive shaft of the motor and rotatably connected thereto central drive gear. Further, the gear transmission may have two eccentric gears, each associated with an eccentric gear each having a brake shoes. Depending on the rotational position of the centrally via the drive gear driven eccentric gears, the rest position or active position for the brake shoes can be specified.
- the eccentric gears may have eccentrically arranged trunnions (i.e., each eccentric gear each has a journal) which respectively engage in bearing seats of the brake shoes for moving the brake shoe holders.
- the journals indicate the rest position or the active position.
- the invention may further be directed to an elevator with a cabin and with at least one damping unit in the manner of the previously described damping unit.
- the spring unit is arranged between the support structure and the cabin and to a certain extent forms a resilient interface of the damping unit to the cabin.
- FIG. 1 shows an elevator with a vertically movable up and down cabin 2 for the transport of persons or goods.
- a support means for moving the car 2 are exemplary configured as a belt or ropes support means 34.
- the elevator system has two in the vertical direction z extending guide rails 3.
- Each guide rail 3 has three guide surfaces extending in the direction of travel of the car.
- At the cabin 2 are in FIG. 1 attached as an example as roller guide shoes designed guide shoes.
- the damping unit designated 1 unwanted vertical vibrations of the cabin can be reduced during a standstill. Such vertical vibrations occur when people enter or leave the cabin 2.
- the change in load causes the car 2 to vibrate. This phenomenon is particularly pronounced in sling-based elevators with high shaft heights.
- With z the direction is indicated, in which the guide rail extends, the arrow z also indicates the direction of travel of the car 2 at.
- the elevator installation has damping units 1 arranged on both sides of the cabin 2.
- the two damping units 1 can be controlled via a (not shown) control device.
- the control device sends a control command to the damping units as soon as the car stops, for example, or when the car door opens. Activation will usually take so long maintained until the doors are closed again and thus no significant load changes are possible. During activation, the controller may continue to send control commands to the damping units.
- the damping units 1 are mounted at the top of the car 2, being placed separately from the upper guide shoes 14.
- the guide shoes and damping units can also be combined or arranged with each other in other ways.
- the at least one damping unit could also be mounted at the bottom of the cabin.
- the damping unit may be attached to a console that includes the guide shoe 15 in whole or in part.
- the mentioned console is designed as designated 6 and explained in more detail below spring means.
- the exemplified as a sliding guide shoe and shown with dotted lines guide shoe 15 is evidently enclosed by the "C" forming device 6.
- a damping unit 1 is shown in a lateral front view.
- the damping unit 1 includes two opposing brake shoes 7, wherein each brake shoe in each case one of the plane-parallel guide surfaces of the (not shown here) guide rail faces.
- Each brake shoe 7 is held by a designated 8 brake shoe holder.
- the brake shoe holders 8 are guided laterally on binding elements 16 and can be moved towards or away from the guide rail. Arrows s indicate the respective directions of movement.
- the individual guide elements 16 are fastened via screw connections 36 to a housing 20.
- the brake shoes 7 are mounted together with support elements 9 resiliently on the brake shoe holders 8.
- the brake shoes 7 give in contacting the respective guide surfaces of the guide rail and move relative to the brake shoe holder 8 in the b-direction back.
- this additional springy storage is not necessarily mandatory. Tests have shown that with damping units that were equipped with designed as a bending springs spring devices in which, however, the brake shoes are more or less rigidly connected to the brake shoe holders, ie have no resiliently mounted by means of mechanical springs brake shoes, already satisfactory Results in terms of ride comfort and reliability are achievable.
- a C-shaped, box-like profile is arranged in the region of an upper side of the housing 20, in the region of an upper side of the housing 20, a C-shaped, box-like profile is arranged.
- This C-profile forms a spring device 6, thanks to which the housing 20 with the brake shoes 7 and brake shoe holders 8 arranged thereon is mounted resiliently on the cabin indicated by 2.
- the spring device 6, which is formed from a sheet metal by bending processes, has a fastening section 21, side walls 22 adjoining it at right angles thereto and end sections 23 connecting at right angles to the side walls.
- the C-profile for the spring device 6 is preferably made of a blank made of sheet steel. Particular preference is given to using a spring steel.
- the spring device 6 is thus obviously designed as a metal bending spring.
- the spring travel created by the spring device 6 resilient mounting is indicated by a double arrow v.
- the special configuration of the spring device 6 results in a parallelogram configuration which allows an approximately linear parallel displacement of the housing 20 to the underside of the car
- the end portions 23 of the spring device 6 are flat on a part of the cabin 2 and are fixedly connected thereto via a screw 37.
- the mentioned cabin part can be formed for example by a cabin floor, a supporting frame of the cabin or by another part associated with the cabin.
- the guide rail 3 is shown.
- the brake shoes 7 can travel without contact along the guide rail 3 during the cabin ride.
- the brake shoe holder 8 are pushed together with the brake shoe 7 disposed thereon against the guide rail 3.
- the pressed against the respective guide surfaces of the guide rails 3 brake shoes 7 cause a reduction in the vertical vibrations of the cabin caused by load changes.
- the activation can be triggered, for example, by the door opening or possibly already before (eg as soon as the car is stationary).
- a designated 4 electric motor As a drive for moving the brake shoe holder 8 is used in the present case a designated 4 electric motor. In principle, however, other actuators would be such as lifting drives imaginable.
- the electric motor 4 is geared to the brake shoe holders 8.
- the geared connection comprises a gear transmission 10 and an eccentric arrangement for converting the rotational movement into the linear movement in the s direction.
- the gear transmission 10 in this case has a central, with the drive axis of the electric motor 4 connected to the drive gear 11 which drives the 12 and 12 'designated gears. How out FIG. 3 as well as from the following FIG. 4 shows, the gear transmission 10 is designed as a spur gear. Of course, other gear-transmission types would be conceivable.
- the respective eccentric gears 12, 12 'are rotatably connected to axle parts 18, to the end side of the bearing pin 13 are formed.
- FIG. 4 Details of the arrangement and operation of the gear transmission 10 of the damping unit shows FIG. 4 ,
- the drivers eg feather keys
- FIG. 4 Details of the arrangement and operation of the gear transmission 10 of the damping unit shows FIG. 4 ,
- the drivers eg feather keys
- FIG. 5 the individual components of the damping unit can be seen.
- the side of rail-like guide members 16 transverse to the direction of travel or profile longitudinal direction the guide rails are movable back and forth.
- a separate assembly is in FIG. 5 recognizable at the bottom right, wherein the brake shoes and brake shoe holder have been designated here 7 'and 8'.
- the support structure is designed substantially in three parts and consists of a GeHouseGermanteil 26, a housing upper part 25 and a cross-section or in plan view U-shaped housing part 27.
- the guide members 16 ' are by means of screws 36.2 and nuts 36.1 attached to the housing part 27.
- the gear transmission 10 can be preassembled on a formed from a sheet metal rear side wall 24, which is installed in the final assembly in the rest of the housing.
- the spring device 6 designed as a spiral spring in C-shape has end sections 23 directed toward one another, which have holes 30 for screw connections for fastening the spring device 6 to the cab (not shown here). Using screws 33, the spring device 6 is screwed in the region of the upper side 25 with the housing of the damping unit and fixed so.
- FIGS. 6 and 7 show an assembly (or brake shoe unit) with brake shoe holder 8 and brake shoe 7.
- the brake shoe 7 may be made of a metallic material.
- the brake shoe 7 may also consist of a plastic material or a material mixture.
- Advantageous braking surfaces for the desired reduction of the vertical vibrations of the cabin arise, for example, when the known at least in the automotive industry under the names "semi-metallic", “Organic” or “low-metallic” brake pads for the brake shoes.
- the brake shoe 7 rests on a comparatively rigid support element 9 made of steel. Supported on the support member 9 brake shoes 7 is resiliently supported by two helical compression springs 5 on the brake shoe holder 8.
- the arrow w indicates the direction of movement in which the brake shoes 7 are moved back when the guide rail is acted on.
- the brake shoe 7 is arranged limitedly displaceable on the brake shoe holder 8 together with the associated support member by means of screws 31 and nuts 32. Depending on requirements, the inner and front nuts 32 can be tightened so far that the brake shoe 7 is biased.
- the outer and rear nuts serve as counter nuts.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Automation & Control Theory (AREA)
- Civil Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
- Braking Arrangements (AREA)
- Vibration Dampers (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Springs (AREA)
Description
Die Erfindung betrifft eine Dämpfungseinheit für einen Aufzug. Aufzüge enthalten Kabinen, die über Tragmittel beispielsweise in Form von Tragseilen oder Tragriemen mittels einer Antriebseinheit in einem Aufzugsschacht bewegbar sind. Im Aufzugsschacht sind Führungsschienen befestigt, die eine Linearführung für die Aufzugskabine vorgeben. Personen oder Güter, die während eines Kabinen-Stillstands die Aufzugskabine betreten oder verlassen, bewirken wegen der Elastizität der Tragmittel unerwünschte Vertikalschwingungen der Kabine. Solche Vertikalschwingungen treten insbesondere bei auf Tragriemen als Tragmittel basierenden Aufzügen auf, die sich in jüngerer Zeit wachsender Beliebtheit erfreuen. Da Riemen im Vergleich zu Stahlseilen ein ungünstigeres Schwingungsverhalten aufweisen, beeinträchtigen die Vertikalschwingungen zunehmend das Komfortgefühl der Fahrgäste und die Betriebssicherheit.The invention relates to a damping unit for an elevator. Lifts contain cabs which are movable via suspension means, for example in the form of suspension ropes or carrying straps, by means of a drive unit in an elevator shaft. In the elevator shaft guide rails are fixed, which specify a linear guide for the elevator car. Persons or goods that enter or leave the elevator car during a car standstill cause undesirable vertical vibrations of the car due to the elasticity of the suspension elements. Such vertical vibrations occur in particular on lifts on suspension straps based on suspension, which enjoy in recent times growing popularity. Since belts have a less favorable vibration behavior compared to steel cables, the vertical vibrations increasingly affect the comfort feeling of the passengers and the operational safety.
Aus der
Anstelle von Festhaltevorrichtungen lässt sich ein ausreichend angenehmes Komfortgefühl für die Fahrgäste während des Kabinenstillstands auch erreichen, wenn die Vertikalschwingungen der Kabine lediglich gedämpft bzw. reduziert werden, wozu erheblich kleinere Kräfte notwendig sind. Eine Dämpfeinheit zur Reduktion von Vertikalschwingungen der Kabine in Stillstandsphasen zeigt beispielsweise die
Aus der
Es ist deshalb eine Aufgabe der vorliegenden Erfindung, die Nachteile des Bekannten zu vermeiden und insbesondere eine Dämpfungseinheit zu schaffen, mit der Vertikalschwingungen der Aufzugskabine während eines Stillstands optimal und auf einfache Weise reduziert werden können. Die Dämpfungseinheit soll weiter auch zum Einbau in bestehende Anlagen geeignet sein. Ein solcher Retrofit der Aufzugsanlage soll einfach und mit vergleichsweise geringen Kosten möglich sein.It is therefore an object of the present invention to avoid the disadvantages of the known and in particular to provide a damping unit with which vertical vibrations of the elevator car during a standstill can be optimally and easily reduced. The damping unit should also be suitable for installation in existing systems. Such a retrofit of the elevator installation should be possible simply and with comparatively low costs.
Diese Aufgaben werden erfindungsgemäss mit einer Vorrichtung mit den Merkmalen des Anspruchs 1 gelöst. Die vorzugsweise mit zwei Bremsbacken ausgerüstete Dämpfungseinheit enthält Bremsbacken-Halter, die zum Bewegen der Bremsbacken mit einem Aktuator in Wirkverbindung stehen. Die Bremsbacken sind in einer Ruhestellung während einer Kabinenfahrt berührungslos entlang einer Führungsschiene fahrbar. Nach Aktivierung des Aktuators, der getriebemässig mit den Bremsbacken-Haltern verbunden ist, werden die von den Bremsbacken-Haltern gehaltenen Bremsbacken während des Kabinenstillstands in einer Aktivstellung gegen die Führungsschiene gepresst. Die Dämpfungseinheit weist weiter ein Gehäuse oder eine andere Trägerstruktur (beispielsweise in Form einer einfachen Trägerplatte) für die Bremsbacken-Halter auf. Dadurch, dass die Dämpfungseinheit eine an der Trägerstruktur befestigte Federeinrichtung, die an die Kabine anbringbar oder angebracht ist und die der federnden Lagerung der Trägerstruktur dient, ergeben sich eine Reihe von Vorteilen. Mit der Federeinrichtung lassen sich unerwünschte seitliche Auslenkung der Kabine quer zur Fahrtrichtung auf einfache Art und Weise auffangen und reduzieren. Weiter wirken sich fertigungs- und montagebedingte Toleranzen zwischen Führungsschiene und Bremsbacken nicht negativ aus.These objects are achieved according to the invention with a device having the features of claim 1. The preferably equipped with two brake shoes damping unit includes brake shoe holder, which are operatively connected to move the brake shoes with an actuator. The brake shoes are movable in a rest position during a cabin ride contactless along a guide rail. After activation of the actuator, which is geared to the brake shoe holders, the brake shoes held by the brake shoe holders are pressed against the guide rail during the car stoppage in an active position. The damping unit further comprises a housing or other support structure (for example in the form of a simple support plate) for the brake shoe holder. Characterized in that the damping unit attached to the support structure spring means which is attached to the cabin or mounted and which serves the resilient mounting of the support structure, there are a number of advantages. With the spring device can be unwanted lateral deflection of the cabin transverse to the direction of travel in a simple manner and reduce. Next affect manufacturing and assembly-related tolerances between the guide rail and brake shoes not negative.
Die Federeinrichtung ist als Biegefeder aus Metall ausgestaltet. Die Biegefeder kann derart ausgestaltet sein, dass sie lediglich zweidimensional auslenkbar ist. Biegefedern haben weiter den Vorteil, dass sie einfach sowohl mit der Trägerstruktur als auch mit der Kabine verbindbar sind. Biegefedern lassen sich auch einfach und kostengünstig herstellen. Schliesslich können Biegefedern optimal an die gewünschten Freiheitsgrade angepasst werden.The spring device is designed as a bending spring made of metal. The spiral spring can be designed such that it can only be deflected in two dimensions. Bending springs also have the advantage that they are easily connectable both to the support structure and to the cab. Bend springs can also be produced easily and inexpensively. Finally, bending springs can be optimally adapted to the desired degrees of freedom.
Besonders vorteilhaft wird die Federeinrichtung durch ein im Querschnitt etwa C-förmiges kastenartiges Profil ausgebildet. Mit einem derartigen C-Profil lässt sich die gewünschte zweidimensional federnde Lagerung der Trägerstruktur auf vorteilhafte Art und Weise erreichen. Das C-förmige Profil kann derart in der Dämpfungseinheit angeordnet bzw. positioniert werden, dass die Profillängsrichtung des C-Profils parallel zu den Bremsflächen der Bremsbacken verläuft. Ein weiterer Vorteil einer derartigen Federeinrichtung besteht darin, dass der durch das C vorgegebene Hohlraum dazu verwendet werden kann, einen Führungsschuh ganz oder teilweise aufzunehmen, wodurch kompakte Aufzugskabinen mit vergleichsweise geringen Bauhöhen realisierbar sind.Particularly advantageously, the spring device is formed by a cross-sectionally approximately C-shaped box-like profile. With such a C-profile, the desired two-dimensionally resilient mounting of the support structure can be achieved in an advantageous manner. The C-shaped profile can be arranged or positioned in the damping unit such that the profile longitudinal direction of the C-profile runs parallel to the braking surfaces of the brake shoes. A further advantage of such a spring device is that the cavity predetermined by the C can be used to completely or partially accommodate a guide shoe, as a result of which compact elevator cars with comparatively low overall heights can be realized.
Die Federeinrichtung kann einen an die Trägerstruktur an oder aufliegenden Befestigungsabschnitt zum Befestigen der Trägerstruktur und zwei einander gegenüberliegende, an den Befestigungsabschnitt vorzugsweise etwa rechtwinklig anschliessende Seitenwände aufweisen. Weiter können an die Seitenwände jeweils parallel zum Befestigungsabschnitt verlaufende Endabschnitte anschliessen, über die die Dämpfungseinheit an der Kabine befestigbar ist. Die Endabschnitte können Befestigungsmittel zum Befestigen der Federeinheit an die Kabine beispielsweise in Form von Löchern zur Aufnahme von Schrauben aufweisen.The spring device may have a fastening section on or resting on the carrier structure for fastening the carrier structure and two side walls which are opposite each other and preferably adjoin the attachment section approximately at right angles. Next can connect to the side walls in each case parallel to the attachment portion extending end portions, via which the damping unit can be fastened to the cabin. The end portions may have attachment means for attaching the spring unit to the cabin, for example in the form of holes for receiving screws.
Weiterhin kann es vorteilhaft sein, wenn jede Bremsbacke jeweils über wenigstens ein Federelement federnd am jeweiligen Bremsbacken-Halter abgestützt ist. Die zusätzliche Abfederung der Bremsbacken ergibt ein weiter optimiertes Verhalten der Kabine während Stillstands-Phasen. Als Federelemente eignen sich insbesondere metallische Federmittel. In einer bevorzugten Ausführungsform kann das Federelement eine Schraubendruckfeder sein. Die Dämpfungseinheit kann je Bremsbacke eine, zwei oder sogar eine Vielzahl von Schraubendruckfedern aufweisen.Furthermore, it may be advantageous if each brake shoe is supported in each case via at least one spring element resiliently on the respective brake shoe holder. The additional cushioning of the brake shoes results in a further optimized behavior of the cabin during standstill phases. As spring elements are in particular metallic spring means. In a preferred embodiment, the spring element may be a helical compression spring. The damping unit may have one, two or even a plurality of helical compression springs per brake shoe.
Vorteilhaft kann es weiter sein, wenn die Bremsbacken begrenzt verschiebbar an den Bremsbacken-Haltern angeordnet sind. Für die Begrenzung des Verschiebewegs können die Bremsbacken-Halter mit entsprechenden Anschlägen ausgerüstet sein.Advantageously, it may be further, if the brake shoes are arranged limitedly displaceable on the brake shoe holders. To limit the displacement of the brake shoe holder may be equipped with appropriate stops.
Die Bremsbacken können an Stützelementen befestigt sein oder an diesen aufliegen. Die Stützelemente können aus einem metallischen Werkstoff, beispielsweise aus Stahl gefertigt sein. Zur federnden Lagerung der Bremsbacken können die Federelemente an den Stützelementen auf einer Seite anstossen. Somit können die Federelemente auf einer Seite an den Bremsbacken-Haltern und auf der anderen Seite an den Stützelementen anstossen.The brake shoes can be attached to support elements or rest on these. The support elements may be made of a metallic material, for example made of steel. For resilient mounting of the brake shoes, the spring elements can abut the support elements on one side. Thus, the spring elements can abut on one side on the brake shoe holders and on the other side on the support elements.
Zum optimalen Einstellen der Dämpfungskraft ist es vorteilhaft, wenn der Aktuator einen vorzugsweise elektrisch antreibbaren Motor umfasst. Dieser Motor kann beispielsweise als Schrittmotor ausgestaltet sein, mit dem mit hoher Präzision die gewünschte Presskraft zur Reduktion der Vertikalschwingungen der Kabine einstellbar ist.For optimal adjustment of the damping force, it is advantageous if the actuator comprises a preferably electrically driven motor. This motor can be configured, for example, as a stepping motor with which the desired pressing force for reducing the vertical vibrations of the cabin can be adjusted with high precision.
Besonders vorteilhaft kann es weiter sein, wenn die Dämpfungseinheit zum Bewegen beider Bremsbacken einen gemeinsamen Motor aufweist, mit dem die Bremsbacken-Halter vorzugsweise simultan, jedoch in gegensinniger Richtung bewegbar sind.It may be particularly advantageous if the damping unit for moving both brake shoes has a common motor with which the brake shoe holder are preferably simultaneously, but in the opposite direction movable.
Die Dämpfungseinheit kann eine beispielsweise durch ein Gehäuse gebildete Trägerstruktur aufweisen, auf der die Bremsbacken-Halter angeordnet und vorzugsweise verschiebbar gelagert sind. Im letzten Fall würde die Verschieberichtung quer zur Lauf- oder Fahrtrichtung der Kabine verlaufen.The damping unit may have a carrier structure formed, for example, by a housing, on which the brake shoe holders are arranged and preferably mounted displaceably. In the latter case, the direction of displacement would be transverse to the running or driving direction of the cabin.
Die Dämpfungseinheit kann eine Exzenteranordnung umfassen, über die die Bremsbacken hin und her bewegbar sind. Dank der Exzenteranordnung lässt sich auf besonders einfache und effiziente Art und Weise die Ruhestellung und Aktivstellung der Bremsbacken-Halter einstellen. Insbesondere erlaubt die Exzenter-Mechanik eine präzise und zugleich einfache Beaufschlagung der Bremsfläche mit einer Presskraft mit hoher Kraftübertragung zur Reduktion der Vertikalschwingungen der Aufzugskabine in Stillstandsphasen, wodurch kleine Aktoren (z.B. Elektromotor) eingesetzt werden können.The damping unit may comprise an eccentric arrangement, via which the brake shoes are movable back and forth. Thanks to the eccentric arrangement can be adjusted in a particularly simple and efficient way, the rest position and active position of the brake shoe holder. In particular, the eccentric mechanism allows precise and at the same time simple loading of the braking surface with a pressing force with high power transmission to reduce the vertical vibrations of the elevator car in standstill phases, which small actuators (eg electric motor) can be used.
Eine vorteilhafte getriebemässige Verbindung zwischen Bremsbacken-Haltern und Aktuator ergibt sich, wenn der Aktuator über ein Zahnradgetriebe mit den Bremsbacken-Haltern verbunden ist.An advantageous geared connection between brake shoe holders and actuator results when the actuator is connected via a gear transmission with the brake shoe holders.
Das Zahnradgetriebe kann beispielsweise als Stirnrad-Getriebe ausgebildet sein und eine an eine Antriebswelle des Motors anschliessendes und mit dieser drehfest verbundenes zentrales Antriebs-Zahnrad aufweisen. Weiter kann das Zahnradgetriebe zwei Exzenter-Zahnräder aufweisen, wobei jeweils ein Exzenter-Zahnrad je einem Bremsbacken zugeordnet ist. Je nach Drehlage der zentral über das Antriebs-Zahnrad antreibbaren Exzenter-Zahnräder kann die Ruhestellung oder Aktivstellung für die Bremsbacken vorgegeben werden.The gear transmission may be formed, for example, as a spur gear and have a subsequent to a drive shaft of the motor and rotatably connected thereto central drive gear. Further, the gear transmission may have two eccentric gears, each associated with an eccentric gear each having a brake shoes. Depending on the rotational position of the centrally via the drive gear driven eccentric gears, the rest position or active position for the brake shoes can be specified.
Die Exzenter-Zahnräder können exzentrisch angeordnete Lagerzapfen aufweisen (d.h. jedes Exzenter-Zahnrad weist je einen Lagerzapfen auf), die jeweils in Lageraufnahmen der Bremsbacken zum Bewegen der Bremsbacken-Halter eingreifen. Die Lagerzapfen geben je nach Drehlage die Ruhestellung oder die Aktivstellung vor.The eccentric gears may have eccentrically arranged trunnions (i.e., each eccentric gear each has a journal) which respectively engage in bearing seats of the brake shoes for moving the brake shoe holders. Depending on the rotational position, the journals indicate the rest position or the active position.
Die Erfindung kann weiter auf einen Aufzug mit einer Kabine und mit wenigstens einer Dämpfungseinheit in der Art der vorgängig beschriebenen Dämpfungseinheit gerichtet sein. Die Federeinheit ist zwischen Trägerstruktur und Kabine angeordnet und bildet gewissermassen eine federnde Schnittstelle der Dämpfungseinheit zur Kabine.The invention may further be directed to an elevator with a cabin and with at least one damping unit in the manner of the previously described damping unit. The spring unit is arranged between the support structure and the cabin and to a certain extent forms a resilient interface of the damping unit to the cabin.
Weitere Einzelmerkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels und aus den Zeichnungen. Es zeigen:
- Figur 1
- eine vereinfachte Darstellung eines Aufzugs in einer Seitenansicht,
Figur 2- eine Darstellung einer erfindungsgemässen Dämpfungseinheit für einen Aufzug,
Figur 3- einen Querschnitt durch die Dämpfungseinheit (Schnittlinie A-A in
Figur 2 ), Figur 4- ein Zahnradgetriebe für die
Dämpfungseinheit gemäss Figur 2 , Figur 5- eine perspektivische Explosionsdarstellung der Dämpfungseinheit,
Figur 6- eine vergrösserte Darstellung einer Baugruppe mit einem Bremsbacken-Halter und einem Bremsbacken für die
Dämpfungseinheit gemäss Figur 2 , und Figur 7- eine perspektivische Explosionsdarstellung der Baugruppe aus
Figur 6 .
- FIG. 1
- a simplified representation of a lift in a side view,
- FIG. 2
- a representation of an inventive damping unit for a lift,
- FIG. 3
- a cross section through the damping unit (section line AA in
FIG. 2 ) - FIG. 4
- a gear transmission for the damping unit according to
FIG. 2 . - FIG. 5
- an exploded perspective view of the damping unit,
- FIG. 6
- an enlarged view of an assembly with a brake shoe holder and a brake shoe for the damping unit according to
FIG. 2 , and - FIG. 7
- an exploded perspective view of the assembly
FIG. 6 ,
Zur Reduktion dieser Vertikalschwingungen weist die Aufzugsanlage auf beiden Seiten der Kabine 2 angeordnete Dämpfungseinheiten 1 auf. Die zwei Dämpfungseinheiten 1 sind über eine (nicht dargestellte) Steuereinrichtung ansteuerbar. Die Steuereinrichtung sendet einen Steuerbefehl an die Dämpfungseinheiten sobald die Kabine beispielsweise anhält oder wenn die Kabinentür aufgeht. Die Aktivierung wird in der Regel solange aufrechterhalten, bis die Türen wieder geschlossen sind und somit keine wesentlichen Laständerungen mehr möglich sind. Während der Aktivierung kann die Steuereinrichtung weiter Regelbefehle für die Dämpfungseinheiten senden.To reduce these vertical vibrations, the elevator installation has damping units 1 arranged on both sides of the
Im Ausführungsbeispiel gemäss
In
Die Bremsbacken 7 sind zusammen mit Stützelementen 9 federnd an den Bremsbacken-Haltern 8 gelagert. Die Bremsbacken 7 geben bei Kontaktierung der jeweiligen Führungsflächen der Führungsschiene nach und bewegen sich relativ zum Bremsbacken-Halter 8 in b-Richtung zurück. Diese zusätzliche federnde Lagerung ist allerdings nicht unbedingt zwingend. Tests haben gezeigt, dass mit Dämpfungseinheiten, die zwar mit als Biegefedern ausgeführten Federeinrichtungen bestückt wurden, bei denen jedoch die Bremsbacken mehr oder weniger starr mit den Bremsbacken-Haltern verbunden sind, d.h. die keine mittels mechanischer Federn federnd gelagerten Bremsbacken aufweisen, schon zufriedenstellende Ergebnisse im Hinblick auf Fahrkomfort und Betriebssicherheit erreichbar sind.The
Im Bereich einer Oberseite des Gehäuses 20 ist ein im Querschnitt C-förmiges, kastenartiges Profil angeordnet. Dieses C-Profil bildet eine Federeinrichtung 6, dank der das Gehäuse 20 mit den daran angeordneten Bremsbacken 7 und Bremsbacken-Haltern 8 federnd an der mit 2 angedeuteten Kabine gelagert ist. Die aus einem Metallblech durch Abkant-Prozesse geformte Federeinrichtung 6 weist einen Befestigungsabschnitt 21, rechtwinklig daran anschliessende Seitenwände 22 und rechtwinklig an die Seitenwände anschliessende Endabschnitte 23 auf. Das C-Profil für die Federeinrichtung 6 wird vorzugsweise aus einem Zuschnitt aus Stahlblech gefertigt. Besonders bevorzugt wird dabei ein Federstahl verwendet. Die Federeinrichtung 6 ist somit ersichtlicherweise als metallische Biegefeder ausgestaltet. Der Federweg der durch die Federeinrichtung 6 geschaffenen federnden Lagerung ist mit einem Doppelpfeil v angedeutet. Die spezielle Ausgestaltung der Federeinrichtung 6 ergibt eine Parallelogramm-Konfiguration, die eine etwa lineare Parallelverschiebung des Gehäuses 20 zur Unterseite der Kabine 2 in v-Richtung bzw. quer in horizontaler Richtung zur Fahrtrichtung z erlaubt.In the region of an upper side of the
Die Endabschnitte 23 der Federeinrichtung 6 liegen flächig an einem Teil der Kabine 2 auf und sind mit diesem über eine Schraubverbindung 37 fest verbunden. Das erwähnte Kabinenteil kann beispielsweise durch einen Kabinenboden, einen Tragrahmen der Kabine oder durch ein anderes der Kabine zugeordnetes Teil gebildet sein.The
Aus der Schnittdarstellung gemäss
Das Zahnradgetriebe 10 weist dabei ein mittiges, mit der Antriebsachse des Elektromotors 4 verbundenes Antriebs-Zahnrad 11 auf, das die mit 12 und 12' bezeichneten Zahnräder antreibt. Wie aus
Details zur Anordnung und Wirkungsweise des Zahnradgetriebes 10 der Dämpfungseinheit zeigt
In
Die als Biegefeder in C-Form ausgeführte Federeinrichtung 6 weist aufeinander zugerichtete Endabschnitte 23 auf, die Löcher 30 für Schraubverbindungen zum Befestigen der Federeinrichtung 6 an der (hier nicht dargestellten) Kabine aufweisen. Unter Verwendung von Schrauben 33 wird die Federeinrichtung 6 im Bereich der Oberseite 25 mit dem Gehäuse der Dämpfungseinheit verschraubt und so fixiert.The
Die
Die Bremsbacke 7 liegt auf einem vergleichsweise starren Stützelement 9 aus Stahl auf. Der am Stützelement 9 abgestützte Bremsbacken 7 ist federnd über zwei Schraubendruckfedern 5 am Bremsbacken-Halter 8 abgestützt. Mit dem Pfeil w ist die Bewegungsrichtung angedeutet, in der bei Beaufschlagung der Führungsschiene der Bremsbacken 7 zurück bewegt wird. Der Bremsbacken 7 ist zusammen mit dem zugehörigen Stützelement mittels Schrauben 31 und Muttern 32 begrenzt verschiebbar am Bremsbacken-Halter 8 angeordnet. Je nach Bedarf lassen sich die inneren bzw. vorderen Muttern 32 soweit anziehen, dass die Bremsbacke 7 vorgespannt wird. Die äusseren bzw. hinteren Muttern dienen als Konter-Muttern. Zur Sicherstellung einer möglichst linearen Bewegung des Bremsbackens 7 bei Beaufschlagung der Führungsschiene ist am Bremsbacken-Halter ein zylindrischer Führungszapfen 28 und im Stützelement 9 ein zum Führungszapfen komplementäre Führungsaufnahme 29 angeordnet.The
Claims (10)
- Damping unit for a lift for reducing vertical oscillations of a cage (2) during standstill, with mutually opposite brake shoe holders (8, 8'), which are movable between a rest setting and an active setting by means of an actuator and which are provided with brake shoes (7, 7'), wherein the brake shoes (7, 7') in the rest setting are movable contactlessly along a guide rail (3) during cage travel and in the active setting are pressable against the guide rail (3) during standstill, wherein the brake shoe holders (8, 8') are connected with the actuator by a transmission, and wherein the damping unit comprises a housing or other support structure (20) for the brake shoe holders (8, 8'), characterised in that for resilient mounting of the housing or support structure (20) a spring device (6) attached to the housing or the support structure (2) is mountable on the cage (2), wherein the spring device (6) is formed as a bending spring of metal.
- Damping unit according to claim 1, characterised in that the spring device (6) in a cross-section forms an approximately C-shaped profile.
- Damping unit according to claim 1 or 2, characterised in that the spring device (6) comprises a fastening section (21), which bears against or rests on the support structure (20), for fastening the support structure and two mutually opposite side walls (22) connected with the fastening section preferably approximately at right angles.
- Damping unit according to claim 3, characterised in that respective end sections (23), which extend parallel to the fastening section and by way of which the damping unit (1) is securable to the cage (2), are connected with the side walls (22).
- Damping unit according to any one of claims 1 to 4, characterised in that the brake shoes (7, 7') are each resiliently supported at the respective brake shoe holder (8, 8') by way of at least one spring element (5).
- Damping unit according to claim 5, characterised in that the brake shoes (7, 7') are arranged at the brake shoe holders (8, 8') to be capable of limited displacement.
- Damping unit according to claim 5 or 6, characterised in that the brake shoes (7, 7') are fastened to support elements (9) against which, for resilient mounting of the brake shoes, the spring elements (5) bear on one side.
- Damping unit according to any one of claims 1 to 7, characterised in that the damping unit has, for movement, a common motor (4) by which the two brake shoe holders (8, 8') are movable.
- Damping unit according to any one of claims 1 to 8, characterised in that the brake shoe holders (8, 8') are movable by way of an eccentric arrangement for setting the rest setting or the active setting.
- Lift with a cage (2) and at least one damping unit (1) according to any one of claims 1 to 9 arranged at the cage.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13724609.6A EP2855327B1 (en) | 2012-05-24 | 2013-05-24 | Dampening unit for a lift |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12169299 | 2012-05-24 | ||
PCT/EP2013/060791 WO2013175001A1 (en) | 2012-05-24 | 2013-05-24 | Damping unit for a lift |
EP13724609.6A EP2855327B1 (en) | 2012-05-24 | 2013-05-24 | Dampening unit for a lift |
Publications (2)
Publication Number | Publication Date |
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EP2855327A1 EP2855327A1 (en) | 2015-04-08 |
EP2855327B1 true EP2855327B1 (en) | 2016-05-25 |
Family
ID=48483099
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13724609.6A Not-in-force EP2855327B1 (en) | 2012-05-24 | 2013-05-24 | Dampening unit for a lift |
Country Status (16)
Country | Link |
---|---|
US (1) | US9718645B2 (en) |
EP (1) | EP2855327B1 (en) |
JP (1) | JP2015517447A (en) |
KR (1) | KR20150013330A (en) |
CN (1) | CN104334488B (en) |
AU (1) | AU2013265155B2 (en) |
BR (1) | BR112014029136A2 (en) |
CA (1) | CA2874368A1 (en) |
HK (1) | HK1206321A1 (en) |
MX (1) | MX351844B (en) |
NZ (1) | NZ702052A (en) |
PH (1) | PH12014502592A1 (en) |
RU (1) | RU2014152249A (en) |
SG (1) | SG11201408283XA (en) |
WO (1) | WO2013175001A1 (en) |
ZA (1) | ZA201409521B (en) |
Families Citing this family (9)
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EP3070043A1 (en) * | 2015-03-18 | 2016-09-21 | Inventio AG | Clamping device in elevator installations |
CN104803254B (en) * | 2015-05-20 | 2017-03-15 | 南通中尧特雷卡电梯产品有限公司 | A kind of mechanical type elevator shock-absorbing device |
CN107098286B (en) | 2016-02-22 | 2021-05-11 | 奥的斯电梯公司 | Elevator brake and method for replacing shock pad of elevator brake |
DE202016103895U1 (en) * | 2016-07-19 | 2017-10-20 | Wittur Holding Gmbh | Actuator for an elevator braking device |
CN108285081B (en) | 2017-01-10 | 2021-08-03 | 奥的斯电梯公司 | Elevator car stabilizing device, control method thereof and elevator system |
EP3569548A1 (en) * | 2018-05-18 | 2019-11-20 | Otis Elevator Company | Elevator safety gear assembly |
CN108821054B (en) * | 2018-08-27 | 2024-03-19 | 博众精工科技股份有限公司 | Car anti-falling device and car lifting system |
CN111237363A (en) * | 2018-11-28 | 2020-06-05 | 奥的斯电梯公司 | Braking device, braking system for elevator and elevator system |
CN109748172B (en) * | 2019-03-08 | 2023-11-24 | 兰州交通大学 | Anti-falling device applied to vertical lifting elevator |
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US5209325A (en) * | 1991-04-12 | 1993-05-11 | Eaton-Kenway, Inc. | Braking apparatus and method for storage and retrieval vehicles |
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JP3390578B2 (en) | 1995-07-26 | 2003-03-24 | 三菱電機株式会社 | Elevator governor |
EP0899231B1 (en) | 1997-08-21 | 2002-10-23 | Aufzugstechnologie Schlosser GmbH | Double action braking device |
JP2000302357A (en) * | 1999-04-22 | 2000-10-31 | Otis Elevator Co | Safety block integrated roller guide |
JP2001019292A (en) | 1999-06-25 | 2001-01-23 | Inventio Ag | Device and method to prevent vertical directional displacement and vertical directional vibration of load support means of vertical carrier device |
KR100520927B1 (en) | 2001-07-16 | 2005-10-17 | 미쓰비시덴키 가부시키가이샤 | Elevator device |
FR2852588B1 (en) * | 2003-03-20 | 2006-04-14 | Thyssenkrupp Elevator Mfg F | PARACHUTE-GUIDE FOR ELEVATOR, AND THE ELEVATOR SO EQUIPPED |
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JP5390988B2 (en) | 2009-08-19 | 2014-01-15 | 日本オーチス・エレベータ株式会社 | Elevator equipment |
CN102040139A (en) * | 2009-10-15 | 2011-05-04 | 河南理工大学 | Direct drive type hoist with boosting caliper brake |
JP5501946B2 (en) * | 2010-12-15 | 2014-05-28 | 株式会社日立製作所 | elevator |
-
2013
- 2013-05-24 SG SG11201408283XA patent/SG11201408283XA/en unknown
- 2013-05-24 JP JP2015513213A patent/JP2015517447A/en active Pending
- 2013-05-24 EP EP13724609.6A patent/EP2855327B1/en not_active Not-in-force
- 2013-05-24 BR BR112014029136A patent/BR112014029136A2/en not_active IP Right Cessation
- 2013-05-24 RU RU2014152249A patent/RU2014152249A/en not_active Application Discontinuation
- 2013-05-24 US US14/402,707 patent/US9718645B2/en not_active Expired - Fee Related
- 2013-05-24 MX MX2014014198A patent/MX351844B/en active IP Right Grant
- 2013-05-24 CN CN201380027104.5A patent/CN104334488B/en not_active Expired - Fee Related
- 2013-05-24 CA CA2874368A patent/CA2874368A1/en not_active Abandoned
- 2013-05-24 WO PCT/EP2013/060791 patent/WO2013175001A1/en active Application Filing
- 2013-05-24 KR KR1020147035740A patent/KR20150013330A/en not_active Application Discontinuation
- 2013-05-24 AU AU2013265155A patent/AU2013265155B2/en not_active Ceased
- 2013-05-24 NZ NZ702052A patent/NZ702052A/en not_active IP Right Cessation
-
2014
- 2014-11-20 PH PH12014502592A patent/PH12014502592A1/en unknown
- 2014-12-23 ZA ZA2014/09521A patent/ZA201409521B/en unknown
-
2015
- 2015-07-17 HK HK15106830.4A patent/HK1206321A1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP2855327A1 (en) | 2015-04-08 |
MX351844B (en) | 2017-10-31 |
CN104334488A (en) | 2015-02-04 |
CA2874368A1 (en) | 2013-11-28 |
AU2013265155B2 (en) | 2016-07-28 |
PH12014502592A1 (en) | 2015-01-26 |
JP2015517447A (en) | 2015-06-22 |
MX2014014198A (en) | 2015-06-04 |
SG11201408283XA (en) | 2015-02-27 |
RU2014152249A (en) | 2016-07-20 |
AU2013265155A1 (en) | 2014-12-18 |
CN104334488B (en) | 2016-12-07 |
HK1206321A1 (en) | 2016-01-08 |
NZ702052A (en) | 2016-07-29 |
US9718645B2 (en) | 2017-08-01 |
ZA201409521B (en) | 2016-08-31 |
BR112014029136A2 (en) | 2017-06-27 |
KR20150013330A (en) | 2015-02-04 |
US20150151949A1 (en) | 2015-06-04 |
WO2013175001A1 (en) | 2013-11-28 |
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