EP0279144A2 - Safety brake - Google Patents

Safety brake 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
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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
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German (de)
French (fr)
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EP0279144A3 (en
EP0279144B1 (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
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Filing date
Publication date
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Publication of EP0279144A2 publication Critical patent/EP0279144A2/en
Publication of EP0279144A3 publication Critical patent/EP0279144A3/en
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Publication of EP0279144B1 publication Critical patent/EP0279144B1/en
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Expired - Lifetime legal-status Critical Current

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    • 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.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

A safety brake for a driven shaft, with brake disc and cam plate for a running roller which can be pressed thereon by a tripping spring and has a pawl engaging during excessive speed. So that this safety brake can be designed in such a way that it can respond for both directions of rotation, it is proposed that two toothed rings (5) with opposed blocking action of the teeth (5a) as well as a basic body (16) with a pawl bolt (12) for opposite pawls (11) be arranged on the shaft (1). An unlocking pin (20) and a locking bolt (21) are mounted in the basic body (16) for the simultaneous engagement and release of the pawls (11). <IMAGE>

Description

Die Erfindung betrifft eine Fangbremse für eine angetriebene Welle mit Bremssscheibe und Kurvenscheibe für eine von einer Auslösefeder darauf drückbare Laufrolle, die bei überhöhter Drehzahl der Welle das Einrasten einer Sperrklinke in einen auf der Welle angeordneten Zahnring veranlaßt.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.

Eine derartige Fangbremse ist durch die DE-OS 31 37 523 bekannt und ermög­licht beim plötzlichen Einrasten der Sperrklinke in den Zahnring ein ge­dämpftes Abbremsen der Welle, so daß Schäden durch ruckartiges Bremsen verhindert werden. Die Verwendung einer solchen Fangbremse ist vor allem bei Hebezeugen angebracht, die über Ketten angetrieben werden. Wenn sie jedoch, wie bei Aufzügen und Hub- und Senkstationen innerhalb Förder­anlagen mit Hängebahnen oder Rollenförderbahnen, mit Gegengewichten ver­sehen sind, kann für beide Drehrichtungen der Welle eine überhöhte Geschwindigkeit eintreten, für die es noch keine geeigneten Fangbremsen gibt.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. However, if, as with elevators and lifting and lowering stations within conveyor systems with overhead conveyors or roller conveyor conveyors, they are provided with counterweights, an excessive speed can occur for both directions of rotation of the shaft, for which there are still no suitable safety brakes.

Aufgabe der Erfindung ist es daher, eine Fangbremse für beide Drehrichtun­gen zu schaffen. Diese Aufgabe wird dadurch gelöst, daß auf der angetrie­benen Welle zwei Zahnringe mit einander entgegengerichteter Sperrwirkung für die Zähne für entgegengesetzt gerichtete Sperrklinken angeordnet sind. Bei einer überhöhten Drehgeschwindigkeit der Welle, sei es bei zu großer Nutzlast oder, wenn eine vorgesehene Nutzlast nicht vorhanden ist und daher das Gegengewicht zu groß ist, rastet eine der Sperrklinken in die Zähne des Zahnringes ein und bewirkt das Abbremsen der Welle.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.

In weiterer Ausgestaltung der Erfindung sind die Zahnringe auf Bremsscheiben gelagert, die über Spannelemente und Schrauben miteinander und mit der Welle verbunden sind und zueinander gerichtete Ansätze für ein gemeinsames Lager für einen Grundkörper haben, der außer einer Bohrung für das Lager auch eine Bohrung für einen Sperrklinkenbolzen und eine Bohrung für ein Anschlußlager einer Momentenstütze hat. Dieser Grundkörper ist der eigentliche Träger der Fangbremse, die auf die Welle gesteckt und mit ihrer Momentenstütze an geeigneter Stelle einer Hub- und Senkstation bzw. eines Aufzuges angebracht wird.In a further embodiment of the invention, 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.

Der genannte Sperrklinkenbolzen hat in weiterer Ausgestaltung der Erfindung auf beiden Seiten des Grundkörpers Lageransätze für zweiarmige Hebel mit den Sperrklinken, und die zweiarmigen Hebel haben Vorsprünge mit Bohrungen für Auslösefedern, deren Festpunkte aus dem Grundkörper herausragende Stifte sind. Außerdem hat jeder zweiarmige Hebel einen Abschaltstift zur Betätigung eines Notschalters.In a further embodiment of the invention, 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. In addition, each two-armed lever has a shut-off pin for actuating an emergency switch.

Damit die Welle, z.B. zum Durchführen von Inspektions- oder Wartungsarbeiten an Hub- und Senkstationen bewußt festgelegt werden kann, können beide Sperrklinken gleichzeitig in den Zahnring einrasten. Hierzu hat der Grundkörper in Nähe der Bohrung für den Sperrklinkenbolzen eine Bohrung für einen drehbaren Entriegelungsstift sowie eine Bohrung für einen Verriegelungsbolzen mit Exzenter.So that the shaft, for example for performing inspection or maintenance work on lifting and lowering stations, can be deliberately fixed, both pawls can snap into the gear ring at the same time. For this purpose, the base body has a hole for a rotatable unlocking pin and a hole for a locking bolt with an eccentric near the hole for the pawl pin.

Am Sperrklinkenbolzen ist auf beiden Seiten ein Federträger angeord­net, und die darin gelagerten Federn mit zugeordnetem Federhalter bewirken beim Drehen der Exzenter das gleichzeitige Einrasten der Sperrkliken. Das gleichzeitige Lösen der Sperrklinken erfolgt durch Drehen des Entriegelungsstiftes.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.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung darge­stellt un dim folgenden erläutert. Es zeigen:

  • Fig. 1 eine Fangbremse in der Seitenansicht,
  • Fig. 2 einen Längsschnitt durch Fig. 1,
  • Fig. 3 die Ansicht der Fangbremse aus der Richtung X aus aus Fig. 2.
An embodiment of the invention is illustrated in the drawing and explained below. Show it:
  • 1 is a side view of a safety brake,
  • 2 shows a longitudinal section through FIG. 1,
  • 3 shows the view of the safety brake from the direction X from FIG. 2.

An einer nicht gezeichneten Hub- und Senkstation ist eine angetrie­bene Welle 1 gelagert, die über nicht gezeichnete Zahnräder und Ket­ten mit einem Antriebsmotor verbunden ist. Auf der angetriebenen Welle 1 sind zwei Bremsscheiben 2 mittels Spannelementen 3 und Schrauben 4 befestigt. Jede Bremsscheibe 2 ist für eine der Dreh­richtungen vorhanden un dvon einem aus mehreren Segmenten gebildeten Zahnring 5 umgeben, wobei zwischen diesem und der Bremsscheibe 2 ein Bremsbelag 6 mit seitlichen Dichtungsringen 7 angeordnet ist. Die Zähne 5a der Zahnringe 5 sind entgegengesetzt gerichtet. Neben jedem Zahnring 5 ist eine Kurvenscheibe 8 für eine Laufrolle 9 angeordnet. Diese ist auf einem Ende eines zweiarmigen Hebels 10 gelagert, der auf dem anderen Ende eine Sperrklinke 11 hat und über einen Bolzen 12 in einem Grundkörper 16 gelagert ist.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. On the driven shaft 1, 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.

Beim Überschreiten einer vorgegebenen Drehzahl der Welle 1 werden beide Laufrollen 9 entgegen der Kraft von Auslösefedern 14 von den Kurvenscheiben 8 weggeschleudert, und die für die jeweilige Dreh­richtung wirksame Sperrklinke 11 rastet in einen Zahn 5a des Zahn­ringes 5 ein. Dieser wird schlagartig angehalten, und der Bremsbelag 6 bewirkt ein langsames Bremsen der Bremsscheibe 2 und damit der Welle 1, so daß die Last langsam gebremst wird. Die nicht wirksame Sperrklinke der anderen Seite gleitet wirkungslos über die Zähne und hat keine Möglichkeit zum Einrasten.When a predetermined speed of the shaft 1 is exceeded, 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.

Die Bremssscheiben 2 haben, wie in Fig. 2 zu erkenne, je einen Ansatz 2a für ein Lager 15, das einen it einer gemeinsamen Abdeckung 17 versehenen Grundkörper 16 trägt. Der Grundkörper 16 hat außer der Bohrung 16a für das Lager 15 eine Bohrung 16b für einen Sperrklinken­bolzen 12, eine Bohrung 16c für ein Anschlußlager 18 einer Momenten­stütze 19, die an geeigneter Stelle einer Tragkonstruktion A angreift, an der auch die Welle 1 gelagert ist. Der Grundkörper 16 hat außerdem eine Bohrung 16d für einen Entriegelungsstift 20 und eine Bohrung 16e für einen Verriegelungsbolzen 21 sowie je zwei Bohrungen für Stifte 26. die äußeren Stifte 26 sind Widerlager für zwei Auslösefedern 14, von denen nur die rechte gezeichnet ist. Jede der Auslösefedern 14 greift in eine Bohrung 10b eines Vorsprunges 10a des Zweiarmigen Hebels 10 ein und drückt so die darin gelagerte Laufrolle 9 gegen den Rand der Kurvenscheibe 8. Die inneren Stifte 26a bilden je feste Widerlager für ein Ende einer Fallenfeder 27, deren anderes Ende der Auslösefeder 14 über einen Federhalter 24 entgegnwirkt, der zusammen mit einem Federträger 23 mittels Schrauben 22 koaxial zum Sperrklinkenbolzen 12 angeordnet ist. Eine auf jeder der SChrauben 22 angeordnete Schutzplatte 25 schützt den Klinkenberiech vor ungewollter Berührung.As can be seen in FIG. 2, 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. In addition to the bore 16a for the bearing 15, 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 disc 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 from unwanted contact.

Durch die Schutzplatte 25 ragt lediglich ein im zweiarmigen Hebel 10 gelagerter Abschaltstift 29, der beim Wegschleudern der Laufrolle 9 von der Kurvenscheibe 8 über einen Notschalter 30 das Abschalten der Anlage bewirkt.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.

Zum bewußten Ein- und Austrasten der Sperrklinken 11 aus dem Zahnring 5 sind in den bereits erwähnten Federträgern 23 jeweils die Fallen­feder 27 und eine weitere Feder 28 vorhanden, die über den Federhal­ter 24 im Zusammenwirken mit einer Abflachung des Entriegelungs­stiftes 20 und dem Verriegelungsbolzen 21, je nach deren Stellung seines Exzenters das Verstellen bewirken. Ein plombierter Sicher­heitsstift 31 verhindert unbefugtes Verdrehen des Entriegelungs­stiftes 20 und des Verriegelungsbolzens 21 mit seinem Exzenter 21a.For deliberate engagement and disengagement of the pawls 11 from the toothed ring 5, 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.

Claims (7)

1. Fangbremse für eine angetriebene Welle mit Bremsscheibe und Kurven­scheibe für eine von einer Auslösefeder darauf drückbare Laufrolle, die bei Überhöhter Drehzahl der Welle das Einrasten einer Sperrklinke in einen auf der Welle angeordneten Zahnring veranlaßt,
dadurch gekennzeichnet,
daß auf der Welle (1) zwei Zahnringe (5) mit entgegengerichteter Sperr­wirkung der Zähne (5a) sowie ein Grundkörper (16) mit einem Sperr­klinkenbolzen (12) für entgegengesetzt gerichtete Sperrklinken (11) angeordnet sind, für deren gleichzeitiges Einrasten und Lösen im Grundkörper (16) ein Entriegelungsstift (20) und ein Verriegelungs­bolzen (21) gelagert sind.1. Safety brake for a driven shaft with a brake disc and cam disc for a roller that can be pressed onto it by a release spring, which causes the pawl to snap into a toothed ring arranged on the shaft when the shaft is rotated excessively.
characterized,
that on the shaft (1) two toothed rings (5) with opposing locking action of the teeth (5a) and a base body (16) with a pawl pin (12) for oppositely directed locking pawls (11) are arranged for their simultaneous engagement and release in the base body (16) an unlocking pin (20) and a locking bolt (21) are mounted. 2. Fangbremse nach Anspruch 1,
dadurch gekennzeichnet,
daß die Zahringe (5) auf Bremsscheiben (2) gelagert sind, die über Spannelemente (3) und Schrauben (4) miteinander und mit der Welle (1) verbunden sind und zueinander gerichtete Ansätze (2a) für ein gemein­sames Lager (15) für den Grundkörper (16) haben, der außer einer Bohrung (16a) für das Lager (15) auch eine Bohrung (16b) für einen Sperrklinkenbolzen (12) und eine Bohrung (16c) für ein Anschlußlager (18) einer Drehmomentenstütze (19) hat.2. safety brake according to claim 1,
characterized,
that the teeth (5) are mounted on brake discs (2), which are connected to one another and to the shaft (1) by means of tensioning elements (3) and screws (4) and mutually directed approaches (2a) for a common bearing (15) for have the base body (16) which, in addition to a bore (16a) for the bearing (15), also has a bore (16b) for a pawl pin (12) and a bore (16c) for a connection bearing (18) of a torque support (19) . 3. Fangbremse nach Anspruch 2,
dadurch gekennzeichnet,
daß der Sperrklinkenbolzen (12) auf beiden Seiten des Grundkör­pers (16) Lageransätze (13) für zweiarmige Hebel (10) mit den Sperrklinken (11) hat.3. safety brake according to claim 2,
characterized,
that the pawl pin (12) on both sides of the base body (16) bearing approaches (13) for two-armed lever (10) with the pawls (11). 4. Fangbremse nach Anspruch 3,
dadurch gekennzeichnet,
daß die zweiarmigen Hebel (10) Vorsprünge (10a) mit Bohrungen (10b) für Auslösefedern (14) haben, deren Festpunkte aus dem Grundkörper (16) herausragende Stifte (26) sind.4. safety brake according to claim 3,
characterized,
that the two-armed levers (10) have projections (10a) with bores (10b) for release springs (14), the fixed points of which are protruding pins (26) from the base body (16). 5. Fangbremse nach einem oder mehreren der vorgenannten Anspruche, dadurch gekennzeichnet,
daß jeder zweiarmige Hebel (10) einen Abschaltstift (29) zur Be­tätigung eines Notschalters (30) hat.5. safety brake according to one or more of the preceding claims, characterized in
that each two-armed lever (10) has a shut-off pin (29) for actuating an emergency switch (30). 6. Fangbremse nach Anspruch 2,
dadurch gekennzeichnet,
daß der Grundkörper (16) in Nähe der Bohrung (16b) für den Sperr­klinkenbolzen (12) eine Bohrung (16d) für den drehbaren Entrie­gelungsstift (20) sowie eine Bohrung (16e) für den Verriegelun­gsbolzen (21) mit Exzenter hat.6. safety brake according to claim 2,
characterized,
that the base body (16) in the vicinity of the bore (16b) for the pawl bolt (12) has a bore (16d) for the rotatable unlocking pin (20) and a bore (16e) for the locking bolt (21) with an eccentric. 7. Fangbremse nach einem oder mehreren der vorgenannten Ansprüche, dadurch gekennzeichnet,
daß koaxial zum Sperrklinkenbolzen (12) bzw. seinen Lageransätzen (13) auf beiden Seiten ein Federträger (23) angeordnet ist, und daß beim gleichzeitigen Einrasten und Lösen der Sperrklinken (11) darin gelagerte Federn (27, 28) über Federhalter (24) und Exzenter (20a) den drehbaren Entriegelungsstift. (20) und den Verriegelungsbolzen (21) halten.7. Safety brake according to one or more of the preceding claims, characterized in that
that a spring support (23) is arranged coaxially to the pawl bolt (12) or its bearing lugs (13), and that springs (27, 28) mounted therein via spring retainers (24) when the pawls (11) engage and disengage at the same time and eccentric (20a) the rotatable unlocking pin. (20) and the locking bolt (21).
EP87730158A 1986-12-23 1987-12-01 Safety brake Expired - Lifetime EP0279144B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3644781 1986-12-23
DE19863644781 DE3644781A1 (en) 1986-12-23 1986-12-23 FAN BRAKE

Publications (3)

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

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Application Number Title Priority Date Filing Date
EP87730158A Expired - Lifetime EP0279144B1 (en) 1986-12-23 1987-12-01 Safety brake

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DE (2) DE3644781A1 (en)

Cited By (5)

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EP0338613A2 (en) * 1988-04-22 1989-10-25 Alimak Ab A catch apparatus for a rack lift
EP0475114A1 (en) * 1990-09-13 1992-03-18 Inventio Ag Safety catch for an elevator with a speed governor attached to the cabin
GB2264283A (en) * 1992-02-21 1993-08-25 Sunrise Medical Ltd Overspeed governor of a stairlift and method of operating the stairlift.
EP0648706A1 (en) * 1993-10-15 1995-04-19 KCI Konecranes International Corporation Safety mechanism
CN103318766A (en) * 2012-09-24 2013-09-25 上海振华重工(集团)股份有限公司 Electric guide plate and torque protection device thereof

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DE102010009357B4 (en) * 2010-02-25 2012-02-16 Konecranes Plc Cable with emergency braking device
DE102019120036A1 (en) 2019-07-24 2021-01-28 Columbus Mckinnon Industrial Products Gmbh Hoist

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US3768609A (en) * 1972-07-24 1973-10-30 Humphrey Elevator Truck Co Lock device for elevator safety brake
FR2332220A1 (en) * 1975-11-24 1977-06-17 Holler Armand Lift and hoist safety device - has brake shoe assembly secured together by screwed rods with release lever
FR2409953A1 (en) * 1977-11-29 1979-06-22 Elba Werk Maschinen Gmbh & Co Safety brake system for rack driven lifts - has pinion driven centrifugal weights actuating brake discs for stopping
DE3137523C2 (en) * 1981-09-22 1987-04-02 Mannesmann AG, 4000 Düsseldorf Safety device for a lifting device

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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 (en) * 1975-11-24 1977-06-17 Holler Armand Lift and hoist safety device - has brake shoe assembly secured together by screwed rods with release lever
FR2409953A1 (en) * 1977-11-29 1979-06-22 Elba Werk Maschinen Gmbh & Co Safety brake system for rack driven lifts - has pinion driven centrifugal weights actuating brake discs for stopping
DE3137523C2 (en) * 1981-09-22 1987-04-02 Mannesmann AG, 4000 Düsseldorf Safety device for a lifting device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0338613A2 (en) * 1988-04-22 1989-10-25 Alimak Ab A catch apparatus for a rack lift
EP0338613B1 (en) * 1988-04-22 1993-09-01 Alimak Ab A catch apparatus for a rack lift
EP0475114A1 (en) * 1990-09-13 1992-03-18 Inventio Ag Safety catch for an elevator with a speed governor attached to the cabin
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 (en) * 1993-10-15 1995-04-19 KCI Konecranes International Corporation Safety mechanism
CN103318766A (en) * 2012-09-24 2013-09-25 上海振华重工(集团)股份有限公司 Electric guide plate and torque protection device thereof

Also Published As

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

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