EP0279144B1 - Fangbremse - Google Patents

Fangbremse Download PDF

Info

Publication number
EP0279144B1
EP0279144B1 EP87730158A EP87730158A EP0279144B1 EP 0279144 B1 EP0279144 B1 EP 0279144B1 EP 87730158 A EP87730158 A EP 87730158A EP 87730158 A EP87730158 A EP 87730158A EP 0279144 B1 EP0279144 B1 EP 0279144B1
Authority
EP
European Patent Office
Prior art keywords
bore
base member
shaft
bolt
safety brake
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.)
Expired - Lifetime
Application number
EP87730158A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0279144A3 (en
EP0279144A2 (de
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/de
Publication of EP0279144A3 publication Critical patent/EP0279144A3/de
Application granted granted Critical
Publication of EP0279144B1 publication Critical patent/EP0279144B1/de
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 for a roller which can be pressed thereon by a release spring and which, when the speed of the shaft is excessive, causes the locking of a pawl into a toothed ring arranged on the shaft.
  • 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.
  • 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.
  • the mentioned pawl pin has bearing projections for two-armed levers with the pawls on both sides of the main body, and the two-armed levers have projections with bores for release springs, the fixed points of which are pins protruding from the main body.
  • each two-armed lever has a shut-off pin for actuating an emergency switch.
  • a driven shaft 1 is mounted, which is connected to a drive motor via gearwheels and chains, not shown.
  • Two brake disks 2 are fastened on the driven shaft 1 by means of tensioning elements 3 and screws 4.
  • Each brake disc 2 is provided 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 snapping into place.
  • the brake disks 2 each have an attachment 2a for a bearing 15, which carries a base body 16 provided with a common cover 17.
  • the base body 16 has a bore 16b for a pawl pin 12, a bore 16c for a connection bearing 18 of a torque support 19 which engages at a suitable point on a supporting structure A on which the shaft 1 is also mounted.
  • the base body 16 also has a bore 16d for an unlocking pin 20 and a bore 16e for a locking bolt 21 and two bores for pins 26.
  • the outer pins 26 are abutments for two release springs 14, of which only the right one is shown.
  • Each of the trigger springs 14 engages in a bore 10b of a projection 10a of the two-armed lever 10 and thus presses the roller 9 mounted therein against the edge of the cam plate 8.
  • the inner pins 26a each form fixed abutments for one end of a latch spring 27, the other end thereof the release spring 14 counteracts via a spring holder 24, which is arranged together with a spring support 23 by means of screws 22 coaxial to the pawl pin 12.
  • a protective plate 25 arranged on each of the screws 22 protects the latch area against unwanted contact.
  • the protective plate 25 only projects a shut-off pin 29 mounted in the two-armed lever 10, which, when the roller 9 is thrown away from the cam plate 8 via an emergency switch 30, switches off the system.
  • 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 to adjust.
  • 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 Fangbremse Expired - Lifetime EP0279144B1 (de)

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 EP0279144A2 (de) 1988-08-24
EP0279144A3 EP0279144A3 (en) 1989-12-13
EP0279144B1 true EP0279144B1 (de) 1992-10-14

Family

ID=6317415

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87730158A Expired - Lifetime EP0279144B1 (de) 1986-12-23 1987-12-01 Fangbremse

Country Status (2)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021013285A1 (de) 2019-07-24 2021-01-28 Columbus Mckinnon Industrial Products Gmbh Hebezeug

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE468089B (sv) * 1988-04-22 1992-11-02 Alimak Ab Faangapparat foer kuggstaangshiss
US5065845A (en) * 1990-09-13 1991-11-19 Pearson David B Speed governor safety device for stopping an elevator car
GB2264283B (en) * 1992-02-21 1995-02-15 Sunrise Medical Ltd Overspeed governor of a stairlift and method of operating the stairlift
US5458318A (en) * 1993-10-15 1995-10-17 Kci Konecranes International Corporation Drum brake
DE102010009357B4 (de) * 2010-02-25 2012-02-16 Konecranes Plc Seilzug mit Notbremseinrichtung
CN103318766B (zh) * 2012-09-24 2015-01-21 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

Family Cites Families (6)

* 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
DE2737433A1 (de) * 1977-08-19 1979-03-01 Pierre Marcel David Sicherheitsbremse fuer an einer flaeche entlanggleitende befoerderungsmittel, vor allem fuer aufzugkabinen
DE2753079A1 (de) * 1977-11-29 1979-05-31 Elba Werk Maschinen Gmbh & Co Fangvorrichtung fuer aufzuege, insbesondere solche mit zahnstangenantrieb
DE3137523A1 (de) * 1981-09-22 1983-04-28 Mannesmann AG, 4000 Düsseldorf Sicherheitseinrichtung fuer ein hebezeug

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021013285A1 (de) 2019-07-24 2021-01-28 Columbus Mckinnon Industrial Products Gmbh Hebezeug
WO2021013286A1 (de) 2019-07-24 2021-01-28 Columbus Mckinnon Industrial Products Gmbh Hebezeug
US20220242704A1 (en) * 2019-07-24 2022-08-04 Columbus Mckinnon Industrial Products Gmbh Lifting gear
US11999600B2 (en) 2019-07-24 2024-06-04 Columbus Mckinnon Industrial Products Gmbh Lifting gear
US12006190B2 (en) 2019-07-24 2024-06-11 Columbus Mckinnon Industrial Products Gmbh Lifting gear

Also Published As

Publication number Publication date
DE3782241D1 (de) 1992-11-19
EP0279144A3 (en) 1989-12-13
DE3644781C2 (tr) 1990-04-26
EP0279144A2 (de) 1988-08-24
DE3644781A1 (de) 1988-07-14

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