EP2920101A1 - Aufzug mit einer sicherheitsbremse - Google Patents
Aufzug mit einer sicherheitsbremseInfo
- Publication number
- EP2920101A1 EP2920101A1 EP13802541.6A EP13802541A EP2920101A1 EP 2920101 A1 EP2920101 A1 EP 2920101A1 EP 13802541 A EP13802541 A EP 13802541A EP 2920101 A1 EP2920101 A1 EP 2920101A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- brake
- elevator
- brake body
- articulated arm
- 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.)
- Granted
Links
- 230000004913 activation Effects 0.000 claims abstract description 37
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 claims description 4
- 238000004146 energy storage Methods 0.000 claims description 3
- 230000003213 activating effect Effects 0.000 claims description 2
- 239000000725 suspension Substances 0.000 claims description 2
- 230000001960 triggered effect Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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
-
- 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
- B66B5/22—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 linearly-movable wedges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
Definitions
- the invention relates to an elevator with a safety brake, in particular an electrically releasable safety brake, which can prevent a possible crash of a car in a dangerous operating state of the elevator.
- a traction drive is composed at least of a motor, a traction sheave and a traction means, such as a rope or belt.
- the motor drives the traction sheave via a shaft.
- the traction sheave transmits traction to the traction means by means of frictional forces.
- the traction means are a cab and a counterweight that balances the weight of the cab suspended.
- a hydraulic drive comprises at least a hydraulic cylinder and a hydraulic piston. In the hydraulic cylinder, a working fluid is compressed, which converts the hydraulic piston depending on the built-up pressure in a vertical upward or downward movement. A mounted on the piston cab is moved accordingly.
- the European safety standard EN-81 requires the use of a safety brake or a so-called safety brake.
- a safety brake is mounted on the cab and, in the event of a drive failure, such as a traction tore or rapid pressure drop in the hydraulic cylinder, may save the cab from a fatal crash.
- the safety brake is traditionally connected to a mechanical speed limiter. This speed limiter triggers the safety brake in the event of an overspeed, the safety brake builds up a braking force on the guide rails and thus brings the car to a safe stop.
- Patent EP 1 400 476 A1 shows such an electronically releasable safety brake.
- This safety brake can be triggered by a solenoid controlled by the overspeed governor and must be fail-safe actuated. Therefore, the safety brake is held by the electric motor against a spring-biased lever arm in a rest position. In the event of a power failure, power to the solenoid is cut off and the energy stored in the spring is released. Consequently, the safety brake is triggered.
- the safety brake shown in EP 1 400 476 AI is characterized by a high trigger safety. However, this is associated with a constantly energized at rest, solenoid to hold the safety brake against a preloaded spring in a rest position.
- the object of the present invention is to develop an electronically releasable safety brake, which identifies a low energy requirement even when at rest.
- an elevator with a car which is guided on guide rails, and with a safety brake which is arranged on the car and which is designed to exert a braking force on the guide rails in the event of non-compliance with a safety criterion.
- the safety brake comprises a brake housing which has a wedge-shaped opening in which at least part of a guide rail is insertable, a brake body which is insertable in the wedge-shaped opening between a wedge-shaped opening defining surface of the brake housing and a guide surface of the guide rail Activation mechanism, via which an activation force is transferable to the brake body and over which the brake body can be pressed against the limiting surface and guide surface, and a release mechanism which is directly or indirectly connected to the brake body and holds the brake body against the activation force in a rest position.
- the elevator is characterized in that the release mechanism has at least one articulated arm, which can be brought into an extended position and a folded position, the articulated arm in the extended position holding the brake body in the rest position and in the folded position, the activation force for a Transmission on the brake body releases.
- the advantage of the invention is that by means of the articulated arm, the safety brake can be kept against a relatively high activation force with little energy in a rest position.
- the release mechanism for the release of the activation force also requires little energy, since the articulated arm is easily brought from its extended position with the application of a small lateral force in a kinked position.
- the release mechanism has an adjustment mechanism connected to the articulated arm.
- the adjusting mechanism is designed to bend the articulated arm from its extended position to its kinked position.
- the adjusting mechanism has an electric drive, in particular a solenoid or linear motor of the like. This drive is controlled to bring the articulated arm of the stretched position in the folded position.
- the adjusting mechanism is connected to a deflectable joint of the articulated arm.
- a particularly simple connection to the actuating mechanism can be created at the joint and secondly, the force that acts upon the force of rotation is particularly small when the force is applied to the joint because of the maximum utilization of the lever effects.
- the activation mechanism has a lever arm, which is operatively connected to the brake body and transmits the activation force to the brake body.
- a lever arm which is operatively connected to the brake body and transmits the activation force to the brake body.
- the ratio between the activation force and the structure of the braking force can be adjusted particularly easily and reliably.
- the lever arm is connected to the articulated arm in such a way that, in its extended position, the articulated arm holds the lever arm against the activation force in the rest position.
- the lever arm is connected to a prestressable spring, which pretensioned transmits the activation force to the lever arm.
- the pen is a special one low-cost component that can store the activation force over long periods of time and delivers reliably when needed.
- a longitudinal axis of the articulated arm and a longitudinal axis of the spring are aligned with each other.
- the release mechanism can be controlled by a safety device, wherein the safety device monitors the safety criterion and, if the safety criterion is not met, controls the release mechanism to such an extent that the activation force can be released for transmission to the brake body.
- the safety criterion preferably represents a cabin speed, a fluid operating pressure of a hydraulic drive or a state of a suspension element on which the cabin is suspended.
- the brake body is designed as a roller body or wedge.
- Such brake bodies are wedged reliably between the limiting surface of the brake housing and the guide surface of a guide rail and accordingly exert a sufficient braking force in each case on the guide rail.
- Fig. 1 shows an embodiment of the elevator with a safety brake
- Fig. 2 is a schematic view of the safety brake in a rest position
- Fig. 3 is a schematic view of the safety brake in an activated position.
- 1 shows an embodiment of the elevator 10 with a car 11.
- the car 11 is in a shaft 14 along a roadway, which is defined by guide rails 12, movable.
- the elevator 10 has a hydraulic drive.
- only one hydraulic piston 13 thereof is visible.
- a hydraulic cylinder in which the hydraulic piston 13 is guided and which moves the hydraulic piston 13 vertically up or down.
- the cabin 11 is equipped at the bottom with two safety brakes 1.
- the elevator 10 can be equipped with a traction drive as an alternative to the hydraulic drive, which has traction means on which the car 11 and a counterweight are suspended, and a motor which has a traction drive is in operative contact with the traction means via a traction sheave.
- traction means ropes, belts or the like can be used as traction means ropes, belts or the like.
- the safety brake 1 is shown in a rest position.
- the safety brake comprises a brake housing 2, a brake body 3, an activation mechanism 4 and a release mechanism 5.
- the brake housing 2 has an opening 20 in which at least part of a guide rail 12 can be inserted.
- the guide rail 12 is made as a T-profile.
- the guide rail 12 may be designed as a U-profile or other suitable profile shape.
- the cab 11 facing the end flange of the guide rail 12 is inserted into the opening 20 of the brake housing 2.
- the opening 20 is delimited on one side by a first surface extending parallel to the guide rail 12 and on the other side by a second surface which, together with the first surface, defines a space wedge-shaped tapering towards the top.
- the brake body 3 is held in a lower rest position.
- the brake body is here designed as a roller body, which is pressed after activation of the brake on the second surface of the brake housing 3 and a guide surface of the guide rail 12 and wedged in a vertically downward movement direction of the car 11 further between the second surface and the guide surface , In this case, the guide rail 12 between the first surface of the brake housing 2 and the brake body 3 clamped.
- the safety brake 1 thus exerts a braking force on the guide rail 12.
- the brake body 3 deviating from the reel body also wedge-shaped or another suitable form engaging interpreted interpretable.
- the activation mechanism 4 comprises a lever arm 8 and a compression spring 9, which is shown in Figure 2 in a biased position.
- the lever arm 8 is articulated at a first end with respect to the brake housing 2.
- At its second freely movable end of the brake body 3 is mounted.
- the compression spring 9 starts.
- the compression spring 9 is between the lever arm 8 and the brake housing
- the release mechanism 5 comprises an articulated arm 6 and an adjusting mechanism 7.
- the articulated arm 6 is composed of two rod elements, which are connected via a deflectable joint. A first end of the buckling bar 6 is articulated relative to the brake housing 2. A second end is hingedly connected to the lever arm 8.
- the adjusting mechanism 7 is mounted on the brake housing 3 and connected via the joint between the rod elements with the lever arm 8. The adjusting mechanism 7 holds the articulated arm 6 in the shown Figure 2 in an extended position. In the extended position of the articulated arm 6 acts against the activation force of the spring 9 and thus holds the brake body
- the adjusting mechanism 7 may be realized as a solenoid, linear motor or the like.
- a movable element of the adjusting mechanism 7 is connected to the joint of the articulated arm 6.
- the adjusting mechanism 7 can be controlled by a safety device, not shown.
- This safety device comprises at least one speed limiter, which upon detection of an overspeed of the car 11 controls the setting mechanism 7 to such an extent that the release mechanism 5 releases the activation force.
- the safety device may also include a pressure sensor, which monitors the pressure of the working fluid in the hydraulic cylinder in a hydraulically driven elevator 10 and also controls the actuating mechanism 7 to release the activation energy at a critical negative pressure. The same applies to a further sensor of the safety device, which monitors a traction means and the control mechanism 7 controls accordingly in a crack of the traction means.
- control mechanism 7 in the above sense to control the elevator 10 to transfer to a safe state, or the safety brake trigger.
- FIG. 3 shows the safety brake 1 in an activated state.
- the adjusting mechanism 7 of the release mechanism 5 is controlled by the safety device.
- the adjusting mechanism 7 brings the buckling bar 6 from its extended position in a bent position.
- the force acting on the buckling mechanism 6 by the adjusting mechanism 7 is shown in FIG. 3 by an arrow.
- the stored energy in the spring 5 is released as an activating force, wherein the activation force is transmitted in the illustration shown vertically upwards on the lever arm 4.
- the lever arm 4 is offset by the activation force about its bearing point in a rotational movement upward and transmits the activation force on the brake body 3.
- the brake body 3 is pressed against the second surface of the brake housing 2 and the guide surface of the guide rail 12.
- the brake body 3 wedged between said surfaces and clamps the guide rail against the first surface of the brake housing 2.
- the force applied to the guide rail 12 braking force finally brings the car 11 to a standstill.
- the safety brake 1 can also prevent inadmissible upward travel.
- the safety brake 1 is vertically mirror-inverted to the cabin 11 to be arranged.
- the brake body is pressed after the release of the activation force vertically downwards against the second surface of the brake housing and the guide surface of the guide rail and wedged in a vertically upward movement of the car 11 between said surfaces.
- the brake body clamps the guide rail 12 against the first surface of the brake housing and thus brings the car 11 to a standstill.
- the release mechanism 5 has an energy storage unit, not shown, such as a battery, another spring or similar. This energy storage unit ensures that the safety brake 1 remains activated even in the event of a power failure.
- the release mechanism 5, in particular the deflectable joint of the articulated arm 6 comprise a one-sided stop.
- the stop is particularly advantageously arranged with respect to a movement of the joint such that a maximum movement of the joint against the stop results in a slight overstretching of the articulated arm 6.
- the stop is located on the side facing away from the adjusting mechanism 7.
- the release mechanism 5 optionally has the further spring, which exerts a release force on the articulated arm 6 in the direction of adjustment of the adjusting mechanism 7.
- the adjusting mechanism 7 acts in the rest position of the safety brake 1 with a counterforce against the release force of the other spring and holds the articulated arm 6 against the stop of the deflectable joint pushing in its extended position.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13802541.6A EP2920101B1 (de) | 2012-11-13 | 2013-11-05 | Aufzug mit einer sicherheitsbremse |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12192317 | 2012-11-13 | ||
EP13802541.6A EP2920101B1 (de) | 2012-11-13 | 2013-11-05 | Aufzug mit einer sicherheitsbremse |
PCT/EP2013/073057 WO2014075954A1 (de) | 2012-11-13 | 2013-11-05 | Aufzug mit einer sicherheitsbremse |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2920101A1 true EP2920101A1 (de) | 2015-09-23 |
EP2920101B1 EP2920101B1 (de) | 2017-01-11 |
Family
ID=47177810
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13802541.6A Active EP2920101B1 (de) | 2012-11-13 | 2013-11-05 | Aufzug mit einer sicherheitsbremse |
Country Status (5)
Country | Link |
---|---|
US (1) | US9695011B2 (de) |
EP (1) | EP2920101B1 (de) |
CN (1) | CN104781175B (de) |
ES (1) | ES2622333T3 (de) |
WO (1) | WO2014075954A1 (de) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10054176B2 (en) | 2015-02-25 | 2018-08-21 | Rock Exotica Llc | Lift systems, line brakes, and methods of vertically moving loads |
DE102015217423A1 (de) * | 2015-09-11 | 2017-03-16 | Thyssenkrupp Ag | Elektrisch betätigbare Fangvorrichtung für eine Aufzugsanlage und Verfahren zum Auslösen einer solchen |
US10486939B2 (en) | 2015-09-27 | 2019-11-26 | Otis Elevator Company | Breaking system for a hoisted structure and method of controlling braking a hoisted structure |
CN108349695B (zh) * | 2015-11-26 | 2021-04-16 | 三菱电机株式会社 | 电梯轿厢的紧急停止装置 |
DE102016218635A1 (de) | 2016-09-28 | 2018-03-29 | Thyssenkrupp Ag | Elektromechanischer Betätiger zum Betätigen einer Bremse einer Aufzugsanlage |
US10173144B2 (en) | 2016-10-19 | 2019-01-08 | James HEATH | Lift system with moving cam assembly and related methods |
EP3606857A1 (de) * | 2017-04-04 | 2020-02-12 | FLSmidth A/S | Sicherheitsbremse einer minenschachtförderung |
US11434104B2 (en) | 2017-12-08 | 2022-09-06 | Otis Elevator Company | Continuous monitoring of rail and ride quality of elevator system |
CN108750883A (zh) * | 2018-07-05 | 2018-11-06 | 安川双菱电梯有限公司 | 带失重保障装置的电梯 |
EP3670414B1 (de) * | 2018-12-20 | 2023-06-14 | KONE Corporation | Aufzugsfangvorrichtungsauslöse- und -rückstellsystem |
EP3677534B1 (de) * | 2019-01-02 | 2021-07-21 | Otis Elevator Company | Aktor einer sicherheitsvorrichtung eines aufzugs |
KR20220051347A (ko) | 2019-08-29 | 2022-04-26 | 다이나텍, 다이나믹스 앤드 테크놀러지, 에스. 엘. | 승강기용 양방향 비상 정지 장치의 전기 기계적 작동부 |
WO2020234490A1 (es) | 2019-08-29 | 2020-11-26 | Dynatech, Dynamics & Technology, S.L. | Accionamiento electromecánico de un dispositivo unidireccional de parada de emergencia de un ascensor |
ES2821014A1 (es) | 2019-09-06 | 2021-04-23 | Orona S Coop | Dispositivo de frenado de aparatos elevadores y procedimiento de frenado asociado |
EP3995431A1 (de) * | 2020-11-06 | 2022-05-11 | Otis Elevator Company | Sicherheitsbremsen mit einstellbarer bremskraft |
TWI823303B (zh) * | 2022-03-23 | 2023-11-21 | 辛耘企業股份有限公司 | 具有防止掉落功能的升降設備與第一制動裝置 |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2274000A (en) * | 1941-10-16 | 1942-02-24 | Otis Elevator Co | Elevator safety apparatus |
US2490653A (en) * | 1948-09-02 | 1949-12-06 | Otis Elevator Co | Safety mechanism for elevators |
US3282383A (en) * | 1964-06-30 | 1966-11-01 | Triax Co | Free-fall safety brake |
GB1226439A (de) * | 1968-12-09 | 1971-03-31 | ||
US4449615A (en) | 1981-08-04 | 1984-05-22 | Mcdonald Elevator | Hydraulic ram safety device with circular brake |
JP2529771B2 (ja) * | 1990-11-06 | 1996-09-04 | 三菱電機株式会社 | ロ―プレスリニアモ―タエレベ―タ― |
US5228540A (en) * | 1992-07-24 | 1993-07-20 | Hollister-Whitney Elevator Corp. | Elevator car brake with shoes actuated by springs |
JP3532349B2 (ja) * | 1996-06-11 | 2004-05-31 | 三菱電機株式会社 | エレベータの安全装置 |
FI105177B (fi) * | 1997-04-14 | 2000-06-30 | Kone Corp | Menetelmä ja koestuslaitteisto hissin tarrainlaitetta varten |
US5819879A (en) * | 1997-11-06 | 1998-10-13 | Otis Elevator Company | Safety brake |
US6173813B1 (en) * | 1998-12-23 | 2001-01-16 | Otis Elevator Company | Electronic control for an elevator braking system |
TW513374B (en) * | 2000-12-08 | 2002-12-11 | Inventio Ag | Safety brake with retardation-dependent braking force |
EP1400476B1 (de) | 2002-09-23 | 2009-10-21 | Inventio Ag | Fangvorrichtung für Aufzüge |
JP2004262652A (ja) * | 2002-09-23 | 2004-09-24 | Inventio Ag | エレベータ用の安全装置 |
MY135853A (en) * | 2003-02-04 | 2008-07-31 | Inventio Ag | Safety device for an elevator |
DE10334654A1 (de) * | 2003-07-22 | 2005-02-10 | Thyssenkrupp Elevator Ag | Seilbremse |
AU2003304530A1 (en) * | 2003-10-07 | 2005-05-26 | Otis Elevator Company | Remotely resettable ropeless emergency stopping device for an elevator |
BRPI0808877A2 (pt) * | 2007-03-12 | 2014-08-26 | Inventio Ag | Elevador |
CN102120539B (zh) * | 2010-12-30 | 2013-09-04 | 沈阳博林特电梯股份有限公司 | 电磁楔形双向夹绳器 |
CN102491144A (zh) * | 2011-11-20 | 2012-06-13 | 江都市显业集团有限公司 | 平底浸麦槽主机断绳保护装置 |
EP2895416B1 (de) * | 2012-09-14 | 2016-07-13 | Inventio AG | Betätigungselement für eine fangvorrichtung |
ES2656196T3 (es) * | 2013-12-19 | 2018-02-26 | Inventio Ag | Freno de zapatas para instalaciones de ascensor |
-
2013
- 2013-11-05 US US14/442,414 patent/US9695011B2/en active Active
- 2013-11-05 ES ES13802541.6T patent/ES2622333T3/es active Active
- 2013-11-05 CN CN201380059264.8A patent/CN104781175B/zh active Active
- 2013-11-05 EP EP13802541.6A patent/EP2920101B1/de active Active
- 2013-11-05 WO PCT/EP2013/073057 patent/WO2014075954A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2014075954A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2920101B1 (de) | 2017-01-11 |
US9695011B2 (en) | 2017-07-04 |
WO2014075954A1 (de) | 2014-05-22 |
ES2622333T3 (es) | 2017-07-06 |
CN104781175B (zh) | 2016-09-14 |
US20160272464A1 (en) | 2016-09-22 |
CN104781175A (zh) | 2015-07-15 |
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