EP2931641A1 - Parachute pour installation d'ascenseur - Google Patents

Parachute pour installation d'ascenseur

Info

Publication number
EP2931641A1
EP2931641A1 EP13799596.5A EP13799596A EP2931641A1 EP 2931641 A1 EP2931641 A1 EP 2931641A1 EP 13799596 A EP13799596 A EP 13799596A EP 2931641 A1 EP2931641 A1 EP 2931641A1
Authority
EP
European Patent Office
Prior art keywords
brake
eccentric
safety
safety gear
bearing axis
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
EP13799596.5A
Other languages
German (de)
English (en)
Other versions
EP2931641B1 (fr
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 EP13799596.5A priority Critical patent/EP2931641B1/fr
Publication of EP2931641A1 publication Critical patent/EP2931641A1/fr
Application granted granted Critical
Publication of EP2931641B1 publication Critical patent/EP2931641B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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 used as a rule, 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.
  • the brake shoe is rotated and longitudinally displaced.
  • 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 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.
  • the safety gear is suitable for braking or holding the elevator car on a brake bridge.
  • on or in the brake housing se a brake eccentric arranged with a cylindrical bearing bore. This brake eccentric is received by a bearing axis, wherein this bearing axis is arranged pivotably or displaceably in the brake housing.
  • the brake eccentric arranged on the bearing axis is spaced apart from the brake bridge in a first position, and it can be brought into contact with the brake bridge in a second position.
  • the brake eccentric can on the one hand be kept in a neutral, non-braking position, spaced from the brake bridge, and on the other hand, in the case of a required braking, can be brought into contact with the brake bridge.
  • the brake housing preferably has an opening through which the bearing axle projects, and a first device moves or pulls the brake eccentric together with the bearing axle into the first position.
  • This first position is determined, for example, by an end stop of the opening.
  • a rigid stop which is carried out for example by a breakthrough in the form of a slot is sufficient.
  • the slot can preferably take over a leadership of the bearing axis. This is advantageous because the breakthrough can absorb significant forces that arise during braking.
  • the bearing axis is pivotally mounted in the brake housing about a vertical axis.
  • the bearing axis is mounted in a rear part of the brake housing about the vertical axis.
  • the first means for moving the brake eccentric in the first position is a spring or spring mechanism, which pulls the brake eccentric in the first stop defined by the end stop of the opening.
  • the spring on the one hand retracts the brake eccentric, if it is not clamped or operated, in the first position, and on the other hand, an actuating force for delivering the brake eccentric to the brake pad in a well-defined, calculable magnitude.
  • the spring, or the spring mechanism is elastic.
  • 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 catching device preferably further comprises a brake member, which is arranged opposite to the brake eccentric in or on the brake housing, so that the braking web of the guide rail in If necessary, between the brake eccentric and the brake member can be clamped.
  • the brake eccentric when brought from the second device in contact with the brake bridge, rotated 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 Bremsexzenters is designed so that a distance from the outer contour to the center of the cylindrical bearing bore in the direction of rotation increases steadily.
  • the brake eccentric is first pushed back until it is again present at the end stop of the breakthrough.
  • the bearing axis is moved together with the brake housing by further rotation of the brake eccentric, so that the braking member finally also touches the brake bridge and clamped.
  • 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 end stop of the opening preferably a slot, takes over and transmits thereby caused by the brake eccentric contact pressure and transmits it in the brake housing.
  • the brake eccentric when using a pivotable bearing axis, the brake eccentric is tilted only when pressed against the brake bridge within the required pivoting, and that the brake eccentric when pushing back to the end stop in turn reaches a flat plane to the brake work position.
  • the brake eccentric and the bearing axis is ideal load.
  • the bearing axis is fixedly connected to an actuating lever.
  • the Betsch Trentshe- is screwed, for example, with the bearing axis, welded or connected by bolts.
  • the connection is such that the bearing axis can be pivoted by the actuating lever about the vertical axis.
  • the brake eccentric can be brought by the actuating lever in contact with the brake bridge.
  • a 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 on the brake bridge, that it can be securely rotated by the relative movement between the brake bridge and safety gear.
  • Such 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.
  • the actuating lever can preferably be swiveled by an actuator, as is known, for example, from document WO 2011/113753, so that the actuating lever can bring the brake eccentric into contact with the brake web.
  • a retaining plate is used to secure the brake eccentric on the bearing axis.
  • the bearing axis is provided with a stop collar, possibly with a corresponding thrust washer, by means of which a position of the brake eccentric on the bearing axis is determined.
  • the bearing axis can be pivotally mounted in a rear part of the brake housing. The operating lever can be fixed to the bearing axis before, after or together with the bearing axis.
  • the brake is eccentric, possibly with an integrated bearing slide bushing, placed on the bearing axis and secured by means of the retaining washer on the bearing axis.
  • the retaining plate covers the bearing bore and it is preferably fastened with a pair of screws on the bearing axis.
  • 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 attachment of the pull lever on the brake eccentric is designed so that a, upon pivoting of the bearing axis resulting, skew of the brake eccentric can be added.
  • the spring continues to act on the rocker arm such 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 controller can thus, for example, operate a second safety gear also when a first safety gear accidentally caught in Fang. This prevents unilateral catching.
  • the spring mechanism further includes a grid position, which secures the Bremsexzen- ter 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; 3 shows a safety gear in a first, unactuated position,
  • FIG. 5 shows a safety gear in a second, actuated position
  • Figure 7 shows a safety gear in a braking position
  • 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, as required, see FIG interact with guide rails 7.
  • 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 connected via at least one slide bar 34 and 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. Thus, 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 arranged pivotably about a vertical axis 27a in the brake housing 17.
  • a brake eccentric 15 is arranged via a sliding shell 26.
  • the brake eccentric 15 has for this purpose a cylindrical bearing bore 16 and the bearing shaft 18 includes, preferably, a collar on which the brake eccentric can strike.
  • 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 brake housing 17 has, in the region between the brake eccentric 15 and the vertical axis 27 a, an opening 24, preferably a slot, through which the bearing axle 18 can protrude.
  • the opening 24 includes an end stop 24a on which the bearing axis 18 can be present and which is arranged so that the brake eccentric can be arranged substantially perpendicular to the brake bridge 7a, or a contact surface of the brake eccentric lies flat to the brake bridge.
  • the opening 24 is designed such that it allows delivery of the brake eccentric 15 to the brake bridge 7a.
  • the delivery corresponds to at least a double amount of a game between the braking surfaces and the brake bridge.
  • the delivery is for example about 3 to 8 millimeters.
  • the aperture 24 is shaped to be the bearing axis
  • the brake eccentric 15 is secured with a retaining plate 29 on the bearing axis 18.
  • the holding plate 29 is screwed, for example, with an end face of the bearing axis.
  • the brake eccentric 15 could also be held with a clamping or securing ring.
  • the bearing axis 18 is provided with an actuating lever 27.
  • the operating lever 27 is on the bearing axis 18 with a bearing journal of the vertical axis 27a and a bolt 27c so connected that an introduced into the operating lever 27 actuating force 27 can pivot the Lagerachs 18 about the vertical axis 27.
  • the actuating lever 27 is, by means of a connection point 27b, connected to the connecting rod 9, preferably in the form of pull or push rods.
  • 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 bearing axis 18 can be adjusted accurately.
  • one of the connections from the actuator 8 to the pivotable axle 18 is made with play or an elastic connection. This can compensate for inaccuracies or forces that can occur during reset, for example.
  • 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 in the brake housing 17 by means of compression springs 23a, preferably pretensioned compression springs 23a.
  • 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 FIGS. 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.
  • 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. In the first position shown in FIGS. 3 and 4, the brake eccentric is in its center position.
  • 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 retention force of the spring 21 can be selected correspondingly smaller.
  • the grid position can also be arranged, for example, in the case of the brake eccentric 15 In FIGS. 5 and 6, the safety gear 10 is actuated.
  • the connecting rod 9 pulls on the actuating lever 27 and thus pivots the bearing shaft 18 and the brake eccentric in the direction of the brake bridge 7a in a second position.
  • Characterized 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 7a between the brake eccentric 15 and brake member 23 is clamped.
  • the brake eccentric is, according to a pivoting of the bearing axis 18, inclined.
  • a connection from the pull lever 30 to the brake eccentric 15 is designed with lateral play, that the pull lever 30 can also be inclined to the brake eccentric 15, or that he does not jam.
  • a contact surface of the Bremsexzenters 15, which comes when delivering the first in contact with the brake bridge 7 a rounded or obliquely touched.
  • the provision can preferably be made by a method as shown in a European application EP 11191102.0 of the same Applicant.
  • the operation in the opposite direction of travel is analogous, in which case the brake eccentric 15 is rotated in the opposite direction.
  • 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.
  • the traction cable could, if necessary, act directly on the pivotable bearing axle 18 via deflecting rollers or via a Bowden cable.
  • the bearing shaft 18 may also be guided via a longitudinal guide, such as a parallel guide or a guide carriage, in the brake housing 17, so that the bearing axis 18 can be displaced together with the brake eccentric 15 to the brake bridge 7a.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Handcart (AREA)

Abstract

Dans l'installation d'ascenseur selon la présente invention, une cabine d'ascenseur (2) est de manière à pouvoir se déplacer le long d'au moins deux rails guides (7), ladite cabine d'ascenseur (2) 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) comprenant un axe de support (18) destiné à supporter l'excentrique de freinage (15). L'axe de support (18) est monté en pivotement ou en translation dans le boîtier de frein conjointement avec l'excentrique de freinage (15), de manière à permettre, dans une première position, le maintien de l'excentrique de freinage (15) monté sur l'axe de support (18) à une certaine distance de la nervure de freinage, et dans une seconde position, sa mise en contact avec la nervure de freinage (7a).
EP13799596.5A 2012-12-13 2013-12-05 Dispositif antichute pour une installation d'ascenseur Not-in-force EP2931641B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13799596.5A EP2931641B1 (fr) 2012-12-13 2013-12-05 Dispositif antichute pour une installation d'ascenseur

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP12196968 2012-12-13
EP13799596.5A EP2931641B1 (fr) 2012-12-13 2013-12-05 Dispositif antichute pour une installation d'ascenseur
PCT/EP2013/075730 WO2014090689A1 (fr) 2012-12-13 2013-12-05 Parachute pour installation d'ascenseur

Publications (2)

Publication Number Publication Date
EP2931641A1 true EP2931641A1 (fr) 2015-10-21
EP2931641B1 EP2931641B1 (fr) 2017-01-18

Family

ID=47561118

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13799596.5A Not-in-force EP2931641B1 (fr) 2012-12-13 2013-12-05 Dispositif antichute pour une installation d'ascenseur

Country Status (5)

Country Link
US (1) US9745171B2 (fr)
EP (1) EP2931641B1 (fr)
CN (1) CN104837758B (fr)
ES (1) ES2622712T3 (fr)
WO (1) WO2014090689A1 (fr)

Families Citing this family (13)

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Publication number Priority date Publication date Assignee Title
BR112015011997B1 (pt) * 2012-11-27 2022-01-18 Inventio Ag Freio de segurança para um sistema de elevador com pelo menos um corpo móvel e método para a frenagem e retenção de um corpo móvel de um sistema de elevador
EP3233707A1 (fr) * 2014-12-17 2017-10-25 Inventio AG Unité d'amortissement pour ascenseur
US20170275136A1 (en) * 2016-03-24 2017-09-28 Home Conveyance Safety Ltd. Emergency fall arresting system
DE202016103895U1 (de) * 2016-07-19 2017-10-20 Wittur Holding Gmbh Betätigungsorgan für eine Aufzugs-Bremseinrichtung
US10562739B2 (en) * 2017-08-25 2020-02-18 Otis Elevator Company Synchronized electronic safety actuator
IT201700117293A1 (it) * 2017-10-17 2019-04-17 Extrema S R L Gruppo frenante per un servoscala.
US11078045B2 (en) * 2018-05-15 2021-08-03 Otis Elevator Company Electronic safety actuator for lifting a safety wedge of an elevator
EP3620419A1 (fr) * 2018-09-07 2020-03-11 KONE Corporation Système d'engrenage de sécurité progressif de décélération constante
EP3898481A1 (fr) * 2018-12-21 2021-10-27 Inventio AG Agencement de système d'ascenseur comprenant un dispositif de freinage d'ascenseur
NL2025442B1 (en) * 2020-04-28 2021-11-09 Otolift Trapliften B V Overspeed governor for a stairlift
WO2022123624A1 (fr) * 2020-12-07 2022-06-16 株式会社日立製作所 Appareil ascenseur
CN114368702B (zh) * 2022-01-11 2024-03-15 安徽舒马克电梯股份有限公司 一种箱式电梯制动装置
CN115092789B (zh) * 2022-08-25 2022-11-11 河南起升智能科技有限公司 防意外移动装置、防意外移动组件和电梯

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Publication number Priority date Publication date Assignee Title
DE59806027D1 (de) * 1997-08-21 2002-11-28 Aufzugstechnologie Schlosser G Bremsfangvorrichtung
DE19850678C1 (de) 1998-11-03 2000-03-16 Gerhard Schlosser Doppel-Bremsfangvorrichtung für Aufzüge oder Regalbediengeräte (RBG)
US6659230B1 (en) * 2000-01-17 2003-12-09 Stannah Stairlifts Limited Safety brake for stairlifts
JP2004262652A (ja) * 2002-09-23 2004-09-24 Inventio Ag エレベータ用の安全装置
BRPI0601926B1 (pt) * 2005-06-17 2018-06-12 Inventio Aktiengesellschaft Dispositivo de pára-quedas do freio
WO2008099487A1 (fr) * 2007-02-15 2008-08-21 Mitsubishi Electric Corporation Dispositif de sécurité pour ascenseur
KR101124931B1 (ko) 2007-09-28 2012-03-27 미쓰비시덴키 가부시키가이샤 엘리베이터의 안전 장치
WO2011113754A1 (fr) * 2010-03-18 2011-09-22 Inventio Ag Actionneur pour un dispositif de freinage et une installation d'ascenseur
US9169104B2 (en) * 2010-12-17 2015-10-27 Inventio Ag Activating a safety gear
CA2816359C (fr) * 2010-12-17 2019-02-19 Inventio Ag Dispositif de surveillance permettant de constater un depart indesirable d'une cabine d'ascenseur a l'arret
ES2566063T3 (es) * 2011-09-30 2016-04-08 Inventio Ag Dispositivo de freno con accionamiento electromecánico
KR101997300B1 (ko) * 2011-09-30 2019-10-01 인벤티오 아게 전기기계식 작동기능을 갖춘 제동 장치
AU2012344215B2 (en) 2011-11-29 2017-08-03 Inventio Ag Safety brake with resetting means
EP2788271B1 (fr) * 2011-12-09 2015-04-15 Inventio AG Actionnement d'un frein de sécurité
WO2013092239A1 (fr) * 2011-12-21 2013-06-27 Inventio Ag Actionneur de frein d'ascenseur
KR102036941B1 (ko) * 2012-03-20 2019-11-26 인벤티오 아게 리프트 시스템에서의 캐치 디바이스

Also Published As

Publication number Publication date
CN104837758A (zh) 2015-08-12
EP2931641B1 (fr) 2017-01-18
CN104837758B (zh) 2017-04-12
ES2622712T3 (es) 2017-07-07
US9745171B2 (en) 2017-08-29
US20150321883A1 (en) 2015-11-12
WO2014090689A1 (fr) 2014-06-19

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