WO1986003184A1 - Freins et dispositif de securite pour ascenseurs - Google Patents

Freins et dispositif de securite pour ascenseurs Download PDF

Info

Publication number
WO1986003184A1
WO1986003184A1 PCT/US1985/002259 US8502259W WO8603184A1 WO 1986003184 A1 WO1986003184 A1 WO 1986003184A1 US 8502259 W US8502259 W US 8502259W WO 8603184 A1 WO8603184 A1 WO 8603184A1
Authority
WO
WIPO (PCT)
Prior art keywords
brake
signal
response
safety
car
Prior art date
Application number
PCT/US1985/002259
Other languages
English (en)
Inventor
Jean-Michel Junguas
Rene Vivien
Original Assignee
Otis Elevator Company
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 Otis Elevator Company filed Critical Otis Elevator Company
Publication of WO1986003184A1 publication Critical patent/WO1986003184A1/fr

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

Definitions

  • This invention relates to elevators, in particular, elevator brakes and safeties.
  • the brake which is electromechanically operated, is located in the machining room, where it is attached to the drive.
  • the braking force is limited by the traction between the cables and the drive.
  • the drive may "slip traction", reducing the braking force significantly.
  • the elevator safety a separate stopping device, is located on the elevator car.
  • a safety rapidly engages the elevator rail to stop the elevator car.
  • the safeties are usually progressive; that is, they progressively reach a maximum tolerable acceleration rate.
  • Safety operation is typically controlled by an elevator governor, which, generally speaking, is a mechanical device that is connected to the elevator car and which, upon sensing elevator car overspeed, provides a mechanical pull (actuation) to the safety, causing it to engage the rail. Disclosure of the Invention
  • An object of the present invention is have both the brake and safety on the car.
  • a brake e.g. caliper brake
  • the brake is mechanically biased to normally freely engage the rail, but the bias is overcome or prevented by a brake control when braking is not needed. If overspeed is detected, however, the operative connection between the brake control and the brake is interupted, allowing the mechanical bias to apply the brake.
  • the bias is overcome by a hydraulic actuator operated by energizing a solenoid to operate a master cylinder.
  • the line connecting the master cylinder and Jthe actuator is vented by another valve when overspeed is detected, thereby eliminating the need to retract the master cylinder to apply the brake.
  • Fig. 1 is a function block diagram of an elevator according to the invention.
  • Fig. 2 is a function block diagram of a brake control system according to the invention.
  • Fig. 3 is plain view of a brake and a rail that may be used in an elevator embodying the invention. Best Mode for Carrying Out the Invention
  • a car 10 In the elevator in Fig. 1, there is a car 10, counterweight (CW) 12, motor 14, motor control (MCNTRL) 16 and two guide rails 18.
  • CW counterweight
  • MCNTRL motor control
  • PPT motor control
  • the governor in this application is connected to the velocity transducer, which, for illustrative purposes, senses car motion relative to a tape 20a to provide car velocity output signals. Position and velocity measurement in that manner is well known.
  • the governor When the velocity or acceleration or both exceeds predetermined levels, the governor provides an ES signal to bring the car to an emergency stop.
  • the ES signal is supplied to a brake control 28, also on top of the car.
  • the brake control 28 which is also connected to the motor control 16 by a traveling cable 30, controls operation of two brakes 32 and they are also on top of the car. These brakes engage the rails, but are maintained in disengagement by the brake control 28 in response to a brake release (BR) signal provided from the motor control except when the car is stopping or is parked, conditions when braking is needed.
  • BR brake release
  • Fig. 2 shows that the brake control 28 contains an oil tank 29 containing a reservoir of hydraulic fluid, and a master cylinder (MC) 31 operated by a solenoid (SOL) 33 which receives the BR signal from the motor control 16.
  • the solenoid has a plunger 33a that controls the position of the master cylinder.
  • the master cylinder provides fluid through two lines 31a to the brakes, each of which contains brake shoes 32a that are squeezed against the guide rails by means of the caliper 32b, as shown in Fig 3.
  • Each brake contains a spring 40 which expands outwardly so as to force the pads against the rail, an action by which the brake is applied.
  • Each brake also contains two separate brake actuators or cylinders (BC) 32c on opposite sides of the spring.
  • BC brake actuators or cylinders
  • the governor senses that from the transducer and provides the ES signal to the brake control.
  • another solenoid 50 receives the signal and operates a release valve (RV) 52, and this "vents" the master cylinder to the tank, (i.e., releases the pressure in the lines 31a) .
  • the ES signal thus interupts the operative connection between the master cylinder and the brake cylinders. Consequently, all pressure from brake cylinders 32c is eliminated, allowing the caliper to ciose immediately by operation of the spring, even if the BR signal is still applied.
  • a hydraulic pump may be used, but with a similar control that positively releases the brake cylinders. That is, even if a configuration like that is utilized, an electromechanical valve which is operated independently by the governor should still be employed to positively release the pressure on the brake actuators.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Elevator Control (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Types And Forms Of Lifts (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)

Abstract

Deux freins à commande hydraulique (32) sont fixés à une cabine d'ascenseur (10) et chaque frein s'engage dans un rail de guidage (18). Chaque frein (32) est sollicité par un ressort (40). Ce dernier est comprimé pour libérer le frein, par l'actionnement de cylindres hydrauliques (31) à l'aide d'un maître cylindre électromécanique (31) qui réagit à un signal provenant de la commande du moteur (16). Une soupape de relaxation électromécanique (52) est actionnée par un régulateur (22), en cas de vitesse excessive, pour libérer rapidement la pression dans les cylindres, ce qui produit l'application des freins.
PCT/US1985/002259 1984-11-23 1985-11-18 Freins et dispositif de securite pour ascenseurs WO1986003184A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8417901A FR2573741B3 (fr) 1984-11-23 1984-11-23 Frein et dispositif de securite pour ascenseur
FR84/17901 1984-11-23

Publications (1)

Publication Number Publication Date
WO1986003184A1 true WO1986003184A1 (fr) 1986-06-05

Family

ID=9309894

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1985/002259 WO1986003184A1 (fr) 1984-11-23 1985-11-18 Freins et dispositif de securite pour ascenseurs

Country Status (7)

Country Link
EP (1) EP0183616A3 (fr)
JP (1) JPS62500864A (fr)
CN (1) CN1007613B (fr)
AU (1) AU568036B2 (fr)
CA (1) CA1262875A (fr)
FR (1) FR2573741B3 (fr)
WO (1) WO1986003184A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5209325A (en) * 1991-04-12 1993-05-11 Eaton-Kenway, Inc. Braking apparatus and method for storage and retrieval vehicles

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5228540A (en) * 1992-07-24 1993-07-20 Hollister-Whitney Elevator Corp. Elevator car brake with shoes actuated by springs
DE9210608U1 (de) * 1992-08-08 1992-10-15 C. Haushahn GmbH & Co, 7000 Stuttgart Aufzugsfangvorrichtung
DE59309330D1 (de) * 1993-10-18 1999-03-04 Inventio Ag Bremssicherheitseinrichtung für eine Aufzugskabine
US6193026B1 (en) 1997-12-22 2001-02-27 Otis Elevator Company Elevator brake
GB2349865A (en) * 1999-05-13 2000-11-15 Bode & Son Ltd F Arresting assembly
JP2001019292A (ja) * 1999-06-25 2001-01-23 Inventio Ag 鉛直搬送装置の荷重支持手段の鉛直方向変位と鉛直方向振動とを防止する装置および方法
US6981575B2 (en) * 1999-09-27 2006-01-03 Otis Elevator Company Concrete rail safety device for an elevator car
WO2005113402A1 (fr) * 2004-05-20 2005-12-01 Mitsubishi Denki Kabushiki Kaisha Dispositif d’arret d’urgence pour ascenseur
ES2543412T3 (es) * 2006-03-16 2015-08-19 Thyssenkrupp Aufzugswerke Gmbh Accionamiento de ascensor con un motor eléctrico
US8210319B2 (en) * 2007-08-31 2012-07-03 John W. Boyd Hydraulic elevating platform assembly
NL2002882C2 (en) * 2009-05-13 2010-11-18 Thomas Regout Internat B V Device for suspension of substantially vertically movable objects and automatic measurement and adjustment system therefore.
CN101979302B (zh) * 2010-10-27 2013-01-02 曹锦泉 可变配重电梯及液压电梯
US9688510B2 (en) 2012-08-02 2017-06-27 Otis Elevator Company Hydraulic brake system for elevator
CN103264946A (zh) * 2013-04-07 2013-08-28 三洋电梯(珠海)有限公司 一种无对重装置式电梯
CA2908798A1 (fr) * 2013-04-30 2014-11-06 Inventio Ag Systeme de freinage hydraulique
CN104627773A (zh) * 2013-11-14 2015-05-20 中国人民解放军军械工程学院 独立式电梯快速响应多级安全防护系统
CN104340804A (zh) * 2014-10-30 2015-02-11 国家电网公司 电梯紧急制动装置
CN104495584B (zh) * 2014-12-11 2016-11-23 吴家集 气动曳引系统
CN105035906A (zh) * 2015-08-21 2015-11-11 李宝 一种带有防坠落装置的垂直升降电梯
CN105398907B (zh) * 2015-12-28 2017-11-24 陈勇 电梯箱体防跌落装置之过速自动减速装置
US10336577B2 (en) * 2016-05-18 2019-07-02 Otis Elevator Company Braking system for an elevator system
EP3309104B1 (fr) * 2016-10-14 2019-10-09 KONE Corporation Procédé destiné à éviter un déclenchement d'un équipement de protection dans un système d'ascenseur, organe de commande conçu pour exécuter un tel procédé, frein de régulateur et système d'ascenseur ayant respectivement un tel organe de commande
CN108002168B (zh) * 2016-10-27 2021-04-02 奥的斯电梯公司 远程触发装置，限速器组件以及电梯
CN109095308B (zh) * 2018-07-24 2020-04-21 温州大学 一种电梯轮槽磨耗可靠度检测方法
CN110143505A (zh) * 2019-05-20 2019-08-20 嘉世达电梯有限公司 一种电梯防坠落装置
CN111532939A (zh) * 2020-04-30 2020-08-14 山西新富升机器制造有限公司 一种摩擦提升机钢丝绳智能防滑系统及控制方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1896776A (en) * 1928-02-17 1933-02-07 Westinghouse Electric & Mfg Co Multiple elevator system
US1934508A (en) * 1932-02-06 1933-11-07 Westinghouse Elec Elevator Co Elevator safety
US1948746A (en) * 1930-11-26 1934-02-27 Westinghouse Elec Elevator Co Elevator safety device
SU897685A2 (ru) * 1980-04-24 1982-01-15 Всесоюзный Научно-Исследовательский Институт Горной Механики Им. М.М.Федорова Ловитель парашюта с тормозными канатами дл улавливани и остановки шахтной клети

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB345035A (en) * 1929-02-06 1931-03-19 Ass Elect Ind Improvements in or relating to safety apparatus for elevators and the like
US1803762A (en) * 1929-07-05 1931-05-05 Otis Elevator Co Elevator safety apparatus
GB377059A (en) * 1930-11-26 1932-07-21 Westinghouse Electric & Mfg Co Improvements in or relating to safety devices for elevators
US2122943A (en) * 1935-08-15 1938-07-05 Jaeckel Franz Otto Safety catch for hoist conveyeances
US2925151A (en) * 1954-07-26 1960-02-16 Clifford E Chandler Mine cage safety device
US3155199A (en) * 1963-10-11 1964-11-03 Goodyear Tire & Rubber Spring applied brake

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1896776A (en) * 1928-02-17 1933-02-07 Westinghouse Electric & Mfg Co Multiple elevator system
US1948746A (en) * 1930-11-26 1934-02-27 Westinghouse Elec Elevator Co Elevator safety device
US1934508A (en) * 1932-02-06 1933-11-07 Westinghouse Elec Elevator Co Elevator safety
SU897685A2 (ru) * 1980-04-24 1982-01-15 Всесоюзный Научно-Исследовательский Институт Горной Механики Им. М.М.Федорова Ловитель парашюта с тормозными канатами дл улавливани и остановки шахтной клети

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5209325A (en) * 1991-04-12 1993-05-11 Eaton-Kenway, Inc. Braking apparatus and method for storage and retrieval vehicles

Also Published As

Publication number Publication date
AU568036B2 (en) 1987-12-10
FR2573741B3 (fr) 1987-03-20
CN1007613B (zh) 1990-04-18
JPS62500864A (ja) 1987-04-09
EP0183616A2 (fr) 1986-06-04
EP0183616A3 (fr) 1987-11-11
AU5196586A (en) 1986-06-18
FR2573741A1 (fr) 1986-05-30
CN85109248A (zh) 1986-07-02
CA1262875A (fr) 1989-11-14

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