EP0279144A2 - Dispositif d'arrêt - Google Patents

Dispositif d'arrêt Download PDF

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Publication number
EP0279144A2
EP0279144A2 EP87730158A EP87730158A EP0279144A2 EP 0279144 A2 EP0279144 A2 EP 0279144A2 EP 87730158 A EP87730158 A EP 87730158A EP 87730158 A EP87730158 A EP 87730158A EP 0279144 A2 EP0279144 A2 EP 0279144A2
Authority
EP
European Patent Office
Prior art keywords
safety brake
pawl
bore
shaft
base body
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
EP87730158A
Other languages
German (de)
English (en)
Other versions
EP0279144B1 (fr
EP0279144A3 (en
Inventor
Heinz-Uwe Jansen
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.)
Vodafone GmbH
Original Assignee
Mannesmann 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 Mannesmann AG filed Critical Mannesmann AG
Publication of EP0279144A2 publication Critical patent/EP0279144A2/fr
Publication of EP0279144A3 publication Critical patent/EP0279144A3/de
Application granted granted Critical
Publication of EP0279144B1 publication Critical patent/EP0279144B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/32—Detent devices
    • B66D5/34—Detent devices having latches
    • 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

  • the invention relates to a safety brake for a driven shaft with a brake disc and cam disc for a roller that can be pressed by a release spring thereon, which causes the locking of a pawl into a toothed ring arranged on the shaft if the speed of the shaft is excessive.
  • Such a safety brake is known from DE-OS 31 37 523 and enables a damped braking of the shaft when the pawl suddenly engages in the toothed ring, so that damage caused by jerky braking is prevented.
  • the use of such a safety brake is particularly appropriate for hoists that are driven by chains.
  • an excessive speed can occur for both directions of rotation of the shaft, for which there are still no suitable safety brakes.
  • the object of the invention is therefore to provide a safety brake for both directions of rotation.
  • This object is achieved in that two toothed rings with opposing locking action on the driven shaft are arranged for the teeth for oppositely directed pawls. If the shaft rotates excessively, either if the payload is too high or if a planned payload is not available and the counterweight is therefore too large, one of the pawls snaps into the teeth of the toothed ring and causes the shaft to brake.
  • the toothed rings are mounted on brake disks, which are connected to one another and to the shaft via tensioning elements and screws and have mutually directed approaches for a common bearing for a base body, which, in addition to a hole for the bearing, also has a hole for a pawl pin and has a bore for a connection bearing of a torque arm.
  • This basic body is the actual carrier of the safety brake, which is placed on the shaft and attached with its torque support at a suitable point on a lifting and lowering station or an elevator.
  • a spring support is arranged on both sides of the pawl pin, and the springs mounted therein with an associated spring holder cause the locking clicks to snap into place when the eccentrics are turned.
  • the pawls are released at the same time by turning the unlocking pin.
  • a driven shaft 1 is mounted on a lifting and lowering station, not shown, which is connected to a drive motor via toothed wheels and chains, not shown.
  • two brake disks 2 are fastened by means of clamping elements 3 and screws 4.
  • Each brake disc 2 is available for one of the directions of rotation and is surrounded by a toothed ring 5 formed from a plurality of segments, a brake pad 6 with lateral sealing rings 7 being arranged between the latter and the brake disc 2.
  • the teeth 5a of the toothed rings 5 are directed in opposite directions.
  • a cam 8 for a roller 9 is arranged next to each toothed ring 5. This is mounted on one end of a two-armed lever 10 which has a pawl 11 on the other end and is mounted in a base body 16 via a pin 12.
  • both rollers 9 are thrown against the force of release springs 14 by the cams 8, and the pawl 11 effective for the respective direction of rotation engages in a tooth 5a of the toothed ring 5. This is stopped suddenly, and the brake pad 6 causes the brake disc 2 and thus the shaft 1 to brake slowly, so that the load is slowed down slowly.
  • the non-effective pawl on the other side slides ineffectively over the teeth and has no possibility of latching.
  • the latch spring 27 and a further spring 28 are present in the spring supports 23 already mentioned, which, via the spring holder 24, interact with a flattening of the unlocking pin 20 and the locking bolt 21, each after the position of its eccentric effect the adjustment.
  • a sealed security pin 31 prevents unauthorized rotation of the unlocking pin 20 and the locking bolt 21 with its eccentric 21a.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
EP87730158A 1986-12-23 1987-12-01 Dispositif d'arrêt Expired - Lifetime EP0279144B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863644781 DE3644781A1 (de) 1986-12-23 1986-12-23 Fangbremse
DE3644781 1986-12-23

Publications (3)

Publication Number Publication Date
EP0279144A2 true EP0279144A2 (fr) 1988-08-24
EP0279144A3 EP0279144A3 (en) 1989-12-13
EP0279144B1 EP0279144B1 (fr) 1992-10-14

Family

ID=6317415

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87730158A Expired - Lifetime EP0279144B1 (fr) 1986-12-23 1987-12-01 Dispositif d'arrêt

Country Status (2)

Country Link
EP (1) EP0279144B1 (fr)
DE (2) DE3644781A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0338613A2 (fr) * 1988-04-22 1989-10-25 Alimak Ab Appareil d'arrêt pour un ascenseur à crémaillère
EP0475114A1 (fr) * 1990-09-13 1992-03-18 Inventio Ag Parachute pour un ascenseur avec un régulateur de vitesse monté sur la cabine
GB2264283A (en) * 1992-02-21 1993-08-25 Sunrise Medical Ltd Overspeed governor of a stairlift and method of operating the stairlift.
EP0648706A1 (fr) * 1993-10-15 1995-04-19 KCI Konecranes International Corporation Dispositif de sécurité
CN103318766A (zh) * 2012-09-24 2013-09-25 上海振华重工(集团)股份有限公司 电动导板机构及其力矩保护装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010009357B4 (de) * 2010-02-25 2012-02-16 Konecranes Plc Seilzug mit Notbremseinrichtung
DE102019120036A1 (de) 2019-07-24 2021-01-28 Columbus Mckinnon Industrial Products Gmbh Hebezeug

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3729071A (en) * 1971-04-08 1973-04-24 Humphrey Elevator & Truck Co Combined overspeed safety brake and reverse holdback mechanism for elevators
US3768609A (en) * 1972-07-24 1973-10-30 Humphrey Elevator Truck Co Lock device for elevator safety brake
FR2332220A1 (fr) * 1975-11-24 1977-06-17 Holler Armand Dispositif de securite et de retenue pour parachute de cabines d'ascenseurs, monte-charge et autres
FR2409953A1 (fr) * 1977-11-29 1979-06-22 Elba Werk Maschinen Gmbh & Co Dispositif d'arret d'urgence pour ascenseurs ou monte-charge, notamment pour ceux qui comportent un entrainement par cremaillere
DE3137523C2 (fr) * 1981-09-22 1987-04-02 Mannesmann Ag, 4000 Duesseldorf, De

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2737433A1 (de) * 1977-08-19 1979-03-01 Pierre Marcel David Sicherheitsbremse fuer an einer flaeche entlanggleitende befoerderungsmittel, vor allem fuer aufzugkabinen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3729071A (en) * 1971-04-08 1973-04-24 Humphrey Elevator & Truck Co Combined overspeed safety brake and reverse holdback mechanism for elevators
US3768609A (en) * 1972-07-24 1973-10-30 Humphrey Elevator Truck Co Lock device for elevator safety brake
FR2332220A1 (fr) * 1975-11-24 1977-06-17 Holler Armand Dispositif de securite et de retenue pour parachute de cabines d'ascenseurs, monte-charge et autres
FR2409953A1 (fr) * 1977-11-29 1979-06-22 Elba Werk Maschinen Gmbh & Co Dispositif d'arret d'urgence pour ascenseurs ou monte-charge, notamment pour ceux qui comportent un entrainement par cremaillere
DE3137523C2 (fr) * 1981-09-22 1987-04-02 Mannesmann Ag, 4000 Duesseldorf, De

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0338613A2 (fr) * 1988-04-22 1989-10-25 Alimak Ab Appareil d'arrêt pour un ascenseur à crémaillère
EP0338613B1 (fr) * 1988-04-22 1993-09-01 Alimak Ab Appareil d'arrêt pour un ascenseur à crémaillère
EP0475114A1 (fr) * 1990-09-13 1992-03-18 Inventio Ag Parachute pour un ascenseur avec un régulateur de vitesse monté sur la cabine
GB2264283A (en) * 1992-02-21 1993-08-25 Sunrise Medical Ltd Overspeed governor of a stairlift and method of operating the stairlift.
GB2264283B (en) * 1992-02-21 1995-02-15 Sunrise Medical Ltd Overspeed governor of a stairlift and method of operating the stairlift
EP0648706A1 (fr) * 1993-10-15 1995-04-19 KCI Konecranes International Corporation Dispositif de sécurité
CN103318766A (zh) * 2012-09-24 2013-09-25 上海振华重工(集团)股份有限公司 电动导板机构及其力矩保护装置

Also Published As

Publication number Publication date
EP0279144B1 (fr) 1992-10-14
DE3644781C2 (fr) 1990-04-26
DE3644781A1 (de) 1988-07-14
DE3782241D1 (de) 1992-11-19
EP0279144A3 (en) 1989-12-13

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