[go: up one dir, main page]

WO2014090688A1 - Parachute pour installation d'ascenseur - Google Patents

Parachute pour installation d'ascenseur Download PDF

Info

Publication number
WO2014090688A1
WO2014090688A1 PCT/EP2013/075728 EP2013075728W WO2014090688A1 WO 2014090688 A1 WO2014090688 A1 WO 2014090688A1 EP 2013075728 W EP2013075728 W EP 2013075728W WO 2014090688 A1 WO2014090688 A1 WO 2014090688A1
Authority
WO
WIPO (PCT)
Prior art keywords
brake
eccentric
safety gear
bearing axis
safety
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.)
Ceased
Application number
PCT/EP2013/075728
Other languages
German (de)
English (en)
Inventor
Josef Husmann
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.)
Inventio AG
Original Assignee
Inventio 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 Inventio AG filed Critical Inventio AG
Priority to EP13799595.7A priority Critical patent/EP2931640B1/fr
Publication of WO2014090688A1 publication Critical patent/WO2014090688A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
    • B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
    • B66B5/20—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by means of rotatable eccentrically-mounted members

Definitions

  • the invention relates to a safety gear for braking an elevator car and an elevator installation with such a safety gear.
  • the elevator system is installed in a building. It consists essentially of a cabin, which is connected via suspension means with a counterweight or with a second car. By means of a drive, which acts either on the support means, directly on the car or on the counterweight, the car is moved along, essentially vertical guide rails.
  • the lift system is used to move people and goods within the building over single or multiple floors.
  • Such elevator systems include devices to secure the elevator car in the event of failure of the drive or the support means or at best to protect even in a stop on a floor from unwanted drifting away.
  • safety devices are usually used, which can slow down the elevator car on the guide rails in case of need.
  • catching devices are preferred which can be controlled by an electronic monitoring system.
  • a braking device which can be controlled electromagnetically. It is rotated after delivery of a brake shoe to a brake bridge and moving elevator car of the brake shoes and moved longitudinally. As a result, the brake shoe can build up a braking force and brake the cab.
  • the solution presented below aims to provide an alternative braking device or safety gear, which is also suitable for attachment to an elevator car, and which can effect a braking of the elevator car.
  • the safety gear should be easy to operate and it should be easy to reset.
  • a proposed safety gear consists of a brake housing which is shaped to receive substantial parts of the safety gear.
  • the brake housing does not have to enclose these parts.
  • the brake housing may also be a base plate on or on which the essential parts are arranged.
  • This brake housing is designed to accommodate significant tension and braking forces.
  • the brake housing includes connections for attaching the safety gear to an elevator car.
  • a bearing axis or a bearing area is arranged and on this bearing axis, or the bearing area a Bremsexzenter is arranged with a cylindrical bearing bore, so that the Bremsexzenter on the bearing axis can be rotated.
  • the bearing axis is designed so that the brake eccentric is pushed perpendicular to the bearing axis in a direction of displacement. This is achieved, for example, in that the bearing axis over a first segment region has a cylindrical bearing bore compatible bearing surface for receiving a bearing or pressing force of the brake eccentric and the bearing axis is reset in a remaining segment area.
  • the brake eccentric In a non-braking state of the safety gear or in other words in a ready position of the safety gear, which also corresponds to a neutral position of the brake eccentric, the brake eccentric is retracted in a first position, or such that the cylindrical bearing bore rests against the first segment region of the bearing axis.
  • the brake eccentric can be displaced at right angles to the bearing axis in the region of the reset of the remaining segment area.
  • the catching device is preferably designed to cooperate, if necessary, with a brake web, preferably a brake web integrated in a guide rail.
  • the brake eccentric is advantageously moved by a first device to the first position or held in the first position, so that the brake eccentric is kept in the neutral position distanced from the brake bridge. From a second device of the brake eccentric is movable to a second position, so that the brake eccentric can be brought into contact with the brake bridge.
  • the safety gear can be brought either in the ready position and in a brake ready position.
  • the first means for moving the brake eccentric to the first position includes a spring or a spring mechanism that pulls the brake eccentric in the first segment region of the bearing axis defined first position. This is particularly advantageous because the spring, or the spring mechanism is elastic. Thus, for example, in an accidental strip of brake eccentric on the brake bridge this is not engaged, but it is a relevant contact pressure required to rotate the brake eccentric. Accidental operation of the safety gear is thus prevented.
  • the brake bridge is a component of a guide rail and the safety device interacts with this brake bridge for the purpose of braking the elevator cage.
  • the safety catch preferably further has a brake part which is opposite to the brake Sexzenter is arranged in or on the brake housing, so that the brake bar of the guide rail can be clamped in case of need between the brake eccentric and the brake member.
  • the brake is eccentric when it is brought from the second device in contact with the brake bridge, twisted by a relative movement between the brake bridge and safety gear so that it is pushed back into the first position.
  • the shape of the brake eccentric is designed so that a distance from the outer contour to the center of the cylindrical bearing bore in the direction of rotation steadily increases.
  • the brake eccentric is first pushed back until it in turn is present at the first segment area of the bearing axis. Thereafter, by further rotation of the brake eccentric, the bearing axis is displaced together with the brake housing, so that the brake member finally also touches the brake bridge and clamps.
  • the brake housing is preferably elastic, for example on sliding rods, laterally displaceably mounted. The sliding rods can thereby transmit a braking force, for example to the elevator car.
  • the first segment area of the bearing shaft takes over and transmits a contact force exerted by the brake eccentric and transmits this into the brake housing.
  • the bearing axis has a central passage opening. Through this protrudes a control pin of the second device and the control pin engages in a control disc.
  • This control disk is arranged in the cylindrical bearing bore, so that a feed movement of the control bolt via the control disk on the brake eccentric is transferable. As a result, the brake eccentric can be brought into contact with the brake stay by means of the feed movement of the control bolt.
  • the delivery force is such that, on the one hand, a retraction force of the first device can be safely overcome and in addition there is an excess of force sufficient to press the brake eccentric so strong against the brake bridge, that it can be safely rotated by the relative movement between the brake bridge and safety gear.
  • a delivery force is for example of the order of 150 to 700 Newton, preferably 500 to 600 Newton. With this delivery force can be twisted securely, usually provided with a Randr réelle or grooving Bremsexzenter.
  • control pin is a part of an actuating lever which is pivotally mounted in the brake housing.
  • the actuating lever in case of need of an actuator, as it is known, for example from document WO 2011/113753, are pivoted, so that the control bolt the brake eccentric, by means of the control disc, moves at right angles to the bearing axis and brings into contact with the brake bridge.
  • the bearing axis includes a guide nose and the control disk is guided displaceably by this guide nose.
  • a holding plate to the bearing axis is firmly connected, for example screwed, so that the holding plate, the control disc to the bearing axis and the positioned cylindrical bearing bore and at the same time secures the brake eccentric on the bearing axis.
  • the operating lever can be pivotally mounted in a rear part of the brake housing. The control pin of the actuating lever protrudes through the central passage opening of the bearing axis.
  • the brake eccentric possibly with an integrated bearing slide bushing, placed on the bearing axis and the control disk is inserted in the particular guide by the guide noses of the bearing axis guide, in an outer end portion of the cylindrical bearing bore.
  • the control pin engages in the control disk.
  • the holding plate is now placed on the guide lugs and screwed with them.
  • the retaining plate covers the bearing bore.
  • the spring mechanism of the first means for pulling the Bremsexzenters in the first position comprises a pull lever, a rocker arm and at least one spring.
  • the pull lever and the rocker arm are hinged together, wherein the pull lever is connected to the brake eccentric and the rocker arm is pivotally mounted in the brake housing.
  • the spring acts on the rocker arm in such a way that it pulls the brake eccentric into the first position via the pull lever.
  • an increase in force of the retracting force can be idealized and further, the rocker arm can easily operate a switch when it reaches a braking position of the Bremsexzenters corresponding tilting position.
  • a monitoring of the safety gear is easily possible and a controller can thus, for example, a second safety gear also actuate when a first safety gear accidentally caught in Fang. This prevents unilateral catching.
  • the spring mechanism further includes a grid position, which secures the brake eccentric in the first position against unintentional pivoting.
  • the grid position may be a ball catch or the like. This prevents a swinging of the brake eccentric.
  • FIG. 1 shows a schematic view of an elevator installation
  • FIG. 2 shows a pair of safety devices attached to an elevator car
  • FIG. 4 shows the safety gear of Figure 3 in a horizontal section
  • FIG. 5 shows a safety gear in a second, actuated position
  • FIG. 7 shows a safety gear in a braking position
  • Figure 9 is a detail view of a bearing axis.
  • FIG. 1 shows an elevator installation 1 in an overall view.
  • the elevator installation 1 is installed in a building and serves to transport persons or goods within the building.
  • the elevator installation includes an elevator car 2, which can move up and down along guide rails 6.
  • the elevator car 2 is accessible from the building via doors.
  • a drive 5 serves to drive and hold the elevator car 2.
  • the drive 5 is arranged in the upper area of the building and the car 2 is suspended by means of support means 4, for example carrying ropes or carrying straps, on the drive 5.
  • the suspension means 4 are further accessible via the drive 5 a counterweight 3 led.
  • the counterweight compensates for a mass fraction of the elevator car 2, so that the drive 5 has to compensate for the main thing only an imbalance between the car 2 and counterweight 3.
  • the drive 5 is arranged in the example in the upper part of the building. It could of course also be arranged in the area of the car 2 or the counterweight 3.
  • the elevator car 2 is equipped with a safety gear 10 which is suitable for securing and / or decelerating the elevator car 2 in the event of unexpected movement, overspeeding or stopping.
  • the safety gear 10 is arranged below the car 2 in the example.
  • the elevator installation 2 further includes a safety controller 11, which in the example is arranged on the elevator car 2.
  • the safety controller 11 monitors movements of the elevator car 2 and activates the safety gear 10 if necessary.
  • two safety gears 10 or a pair of safety gears 10 are arranged on the left and right of the elevator car 2, where necessary with guide rails 7 interact.
  • the pair of safety gears 10 is operated in the example of a central actuator 8, which in turn is controlled by the safety controller 11.
  • the actuator 8 is connected by means of connecting rods 9, preferably tie rods to the safety gear 10.
  • the safety gear 10 consists in the example shown in Figures 3 to 8 of a brake housing 17.
  • the brake housing is designed as a supporting structure. It is about at least a slide bar 34 and connected via tilt stops to the elevator car 2.
  • the brake housing 17 is made for example as a casting, as a welded construction or from another machined structure. It is designed to receive required braking and pressure forces and to transfer to the elevator car 2.
  • the brake housing 17 is held, for example via a spring arrangement (not shown) on the slide bar 34 in a base position defined by a stop screw 17a.
  • the brake housing 17 can align laterally to the brake pad 7 a of the guide rail 7 upon actuation of the safety gear 10.
  • a bearing axle 18 is arranged in the brake housing 17. This is firmly connected to the brake housing 17 or is a part of the same.
  • the bearing axis 18 has an opening 24 through which a control bolt 25 can protrude.
  • a brake eccentric 15 is arranged, via a sliding shell 15a.
  • the brake eccentric has a bearing bore 16 for this purpose.
  • the brake eccentric 15 further has, starting from a central region, a rising in both directions outer curve shape, which ends in a braking surface with a straight portion.
  • the bearing axis 18, as used in the embodiment of Figures 3 to 8, is shown for better illustration in Figure 9 in detail.
  • the bearing axle 18 is a part of the brake housing 17 or it may for example be welded into the brake housing 17.
  • the bearing shaft 18 protrudes, like a pin out of the brake housing.
  • a stop surface 17.1 is designed so that the brake eccentric 15 is guided with its cylindrical bearing bore 16 laterally to the brake housing 17.
  • the bearing axis 18 is in the region of the brake eccentric 15 off or reset.
  • the bearing shaft 18 consists of a first segment area 18.1 which extends approximately to one half of the axle circumference.
  • This first segment region 18.1 is shaped according to a diameter of the cylindrical bearing bore 16, or of the slide bushing 15a, and is associated with a load direction in which, when the brake eccentric 15 is pressed against the brake web 7a, a pressing or braking force has to be transmitted.
  • the bearing axis with respect to a particular through the cylindrical bearing bore 16 circular shape, reset.
  • the brake eccentric 15 can be delivered according to the reset side to the brake bridge 7a.
  • the reset preferably corresponds to at least twice the amount of play between the braking surfaces and the brake bridge.
  • the reset is for example about 3 to 8 millimeters.
  • the remaining segment area 18.2 is also round, but other shapes of the remaining segment area 18.2 are possible. It must be given only the possibility to move.
  • the bearing axis further includes the aperture 24, which provides space for the control pin 25.
  • the control pin 25 can thus by a rear portion of the brake housing 17 through the Bearing axis 18 are led forward.
  • the bearing axis 18 in the example includes two guide lugs 28 whose function will be explained below.
  • a control disk 26 is arranged in the cylindrical bearing bore 16, as again in connection with the figures 3 to 8 can be seen.
  • the control disc 26 fits into the cylindrical bearing bore 16, and it has in the center a receptacle into which the control pin 25 can engage from behind through the opening 24.
  • the control disk 26 is flattened laterally, so that it is guided in this area between the guide lugs 28 of the bearing axis 18. This can be moved laterally by means of the control pin 25 of the brake eccentric.
  • the brake eccentric 15 and the control disk 26 are held by a retaining plate 29, preferably a circular plate 29, as shown in FIGS. 3 to 8. In Figures 3 and 5, the retaining plate is omitted, so that the view of the guide lugs 28 of the bearing axis 18, the execution of the segment areas 18.1, 18.2 and the control disk 26 is more clearly visible.
  • control pin 25 is designed as part of an actuating lever 27.
  • the operating lever 27 is pivotally mounted in the brake housing 17 by means of a bearing pin 27a and the actuating lever 27, by means of a connection point 27b, to the connecting rod 9, preferably pull or push rods connected.
  • the connecting rods 9 are, as explained in connection with Figure 2, connected to an actuator 8.
  • the connecting rod 9 is provided with a length adjustment 9a, so that a desired position of the operating lever 27 can be accurately adjusted.
  • the safety gear includes a brake member 23 which is disposed opposite to the brake eccentric 15 in the brake housing 17 so that the brake pad 7a can be disposed between the brake eccentric 15 and the brake member 23.
  • the brake member is supported by means of compression springs 23 a, preferably prestressed compression springs 23 a, in the brake housing 17.
  • the brake member 23 can be biased by means of spring pin 23b and adjusting nuts 23c, against the compression springs 23a.
  • the brake eccentric is further held by means of a first device 19 in a first position, as shown in Figures 3 and 4.
  • a pull lever 30 attached to the brake eccentric is connected to a rocker arm 31, which in turn is pivotally mounted in a retaining plate 19a fastened to the brake housing 17.
  • the rocker arm 31, so that the pull lever 30 and finally finally the brake eccentric are kept so in the first position.
  • a position of the rocker arm 31 and thus a position of the brake eccentric 15 are monitored by a switch 32 by means of a switching cam 32a.
  • the brake eccentric In the first position shown in FIGS. 3 and 4, the brake eccentric is in its center position. He is distanced from the brake bridge 7a and the brake housing 17 is located at an end position determined by the stop screw.
  • the safety gear 10 and thus the elevator car 2 can thus move freely.
  • the switch 32 is in an unconfirmed switching position and this signal is passed on as needed to the safety controller 11 or to the elevator control 6.
  • a grid position 33 for example in the form of a Kugelschnäppers, integrated. This provides an additional holding force which keeps the brake eccentric in the first position.
  • a retaining force of the spring 21 can be selected correspondingly smaller.
  • the safety gear 10 is actuated.
  • the connecting rod 9 pulls on the actuating lever 27 and thus rotates the control pin 25 in the direction of the brake bridge 7a in a second position.
  • This further the brake eccentric 15 is delivered to the brake bridge and the brake housing is pulled on the slide bar 34 to the brake bridge, so that the brake bridge between the brake eccentric 15 and brake member 23 is clamped.
  • a contact force is significantly increased and a corresponding braking force is generated.
  • the provision can preferably be made by a method as shown in a European application EP 11191102.0 of the same Applicant.
  • the elevator expert can arbitrarily change the set shapes and arrangements.
  • any retraction device for example, only a spring.
  • the pull or push rods 9 connecting means such as a pull rope or a hydraulic actuation can be provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)

Abstract

Dans l'installation d'ascenseur selon la présente invention, une cabine d'ascenseur (2) est installée de manière à pouvoir se déplacer le long d'au moins deux rails guides (7), ladite cabine d'ascenseur étant équipée d'une paire de parachutes (10) et d'un déclencheur (8) pour actionner le parachute (10). Le parachute (10) pour le freinage d'une cabine d'ascenseur (2) comprend au moins un excentrique de freinage (15) doté d'un orifice de montage cylindrique (16), et un boîtier de frein (17) pourvu d'un axe de support (18) destiné à supporter l'excentrique de freinage (15). L'excentrique de freinage (15) est déplaçable perpendiculairement à l'axe de support (18). L'axe de support (18) présente en outre une première partie segmentaire (18.1) présentant une surface de support compatible avec l'orifice de montage cylindrique (16) pour la réception d'une force d'appui ou de pression de l'excentrique de freinage (15). Dans la partie segmentaire restante (18.2), l'axe de support (18) est en retrait, de manière à permettre le déplacement de l'excentrique de freinage (15) perpendiculairement à l'axe de support (18).
PCT/EP2013/075728 2012-12-13 2013-12-05 Parachute pour installation d'ascenseur Ceased WO2014090688A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13799595.7A EP2931640B1 (fr) 2012-12-13 2013-12-05 Dispositif antichute pour une installation d'ascenseur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP12196966.1 2012-12-13
EP12196966 2012-12-13

Publications (1)

Publication Number Publication Date
WO2014090688A1 true WO2014090688A1 (fr) 2014-06-19

Family

ID=47561117

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/075728 Ceased WO2014090688A1 (fr) 2012-12-13 2013-12-05 Parachute pour installation d'ascenseur

Country Status (2)

Country Link
EP (1) EP2931640B1 (fr)
WO (1) WO2014090688A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19850678C1 (de) * 1998-11-03 2000-03-16 Gerhard Schlosser Doppel-Bremsfangvorrichtung für Aufzüge oder Regalbediengeräte (RBG)
EP2112116A1 (fr) * 2007-02-15 2009-10-28 Mitsubishi Electric Corporation Dispositif de sécurité pour ascenseur
WO2011113753A2 (fr) 2010-03-18 2011-09-22 Inventio Ag Installation d'ascenseur avec dispositif de freinage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19850678C1 (de) * 1998-11-03 2000-03-16 Gerhard Schlosser Doppel-Bremsfangvorrichtung für Aufzüge oder Regalbediengeräte (RBG)
EP2112116A1 (fr) * 2007-02-15 2009-10-28 Mitsubishi Electric Corporation Dispositif de sécurité pour ascenseur
WO2011113753A2 (fr) 2010-03-18 2011-09-22 Inventio Ag Installation d'ascenseur avec dispositif de freinage

Also Published As

Publication number Publication date
EP2931640A1 (fr) 2015-10-21
EP2931640B1 (fr) 2017-01-18

Similar Documents

Publication Publication Date Title
EP2931641B1 (fr) Dispositif antichute pour une installation d'ascenseur
EP2651809B1 (fr) Actionnement d'un parachute
EP2760777B1 (fr) Dispositif de freinage doté d'un dispositif d'actionnement électromécanique
EP2925654B1 (fr) Dispositif antichute pour un corps mobile d'une installation de levage
EP2760776B1 (fr) Système de freinage à actionnement électromécanique
EP3197812B1 (fr) Frein d'ascenseur
EP2978702B1 (fr) Dispositif de freinage pour installation d'ascenseur
EP3938308B1 (fr) Frein de sécurité et procédé de freinage
EP0543154A1 (fr) Arrangement pour activer un dispositif de sécurité
DE102013111385A1 (de) Auslösevorrichtung einer Fangvorrichtung für eine Aufzugskabine einer Aufzugsanlage
WO2017211355A1 (fr) Parachute pour un dispositif de levage
EP1400476A1 (fr) Parachute pour ascenseurs
EP0787676A1 (fr) Dispositif de sécurité
EP4077190B1 (fr) Dispositif d'arrêt pour un ascenseur
EP3554981B1 (fr) Frein de stationnement
EP2931640B1 (fr) Dispositif antichute pour une installation d'ascenseur
EP3774629B1 (fr) Frein à mâchoires pour une installation d'ascenseur, servant en particulier de frein de maintien et de sécurité
EP3037375A1 (fr) Installation d'ascenseur dotée d'un dispositif d'arrêt et de réglage pour un système de cabine d'ascenseur
WO2025040579A1 (fr) Châssis pour une machine d'entretien de voie et procédé d'entretien d'une voie à l'aide d'une telle machine d'entretien de voie
EP2050706B1 (fr) Dispositif de fixation
WO2013175003A1 (fr) Unité d'amortissement pour ascenseur
DE19635245C2 (de) Sicherheits-Bremsvorrichtung für Seilförderanlagen
EP4234470B1 (fr) Unité de déclenchement pour un dispositif de capture
EP1514826B1 (fr) Ascenseur comprenant un dispositif pour actionner un parachute, une barre pour actionner un parachute et une méthode pour actionner un parachute
DE19635244C2 (de) Sicherheits- Bremsvorrichtung für Seilförderanlagen

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13799595

Country of ref document: EP

Kind code of ref document: A1

REEP Request for entry into the european phase

Ref document number: 2013799595

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2013799595

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE