EP0884067B1 - Braking apparatus for ascending and descending device - Google Patents

Braking apparatus for ascending and descending device Download PDF

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Publication number
EP0884067B1
EP0884067B1 EP97810359A EP97810359A EP0884067B1 EP 0884067 B1 EP0884067 B1 EP 0884067B1 EP 97810359 A EP97810359 A EP 97810359A EP 97810359 A EP97810359 A EP 97810359A EP 0884067 B1 EP0884067 B1 EP 0884067B1
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EP
European Patent Office
Prior art keywords
rope
centrifugal
braking apparatus
brake
weights
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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
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EP97810359A
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German (de)
French (fr)
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EP0884067A1 (en
Inventor
Frank Wullimann
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Rollgliss AG
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Rollgliss AG
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Publication date
Application filed by Rollgliss AG filed Critical Rollgliss AG
Priority to AT97810359T priority Critical patent/ATE258074T1/en
Priority to DE59711234T priority patent/DE59711234D1/en
Priority to EP97810359A priority patent/EP0884067B1/en
Priority to US09/092,957 priority patent/US6223868B1/en
Priority to CA002240122A priority patent/CA2240122A1/en
Publication of EP0884067A1 publication Critical patent/EP0884067A1/en
Application granted granted Critical
Publication of EP0884067B1 publication Critical patent/EP0884067B1/en
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B1/00—Devices for lowering persons from buildings or the like
    • A62B1/06—Devices for lowering persons from buildings or the like by making use of rope-lowering devices
    • A62B1/08—Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brake mechanisms for the winches or pulleys
    • A62B1/10—Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brake mechanisms for the winches or pulleys mechanically operated

Definitions

  • the present invention relates to a braking device according to the preamble of claim 1, in particular for use on descenders.
  • Ascending / descending devices e.g. according to the European patent publication Applicant's EP-A-480 117 are preferred used to pull people or loads up on a rope or lower. Preferred areas of application are the emergency services or mobile use in general of these devices.
  • the up / down ropes have essentially the function of reducing the retention force when abseiling in connection with a safeguard against uncontrolled The person or load hanging on the rope falls.
  • An object of the present invention is to provide a Specify device that an increase in abseiling Abseiling speed over a given limit prevented.
  • an up / down rope device on the train side a braking device attached when exceeded a predetermined speed of the rope, preferably only when abseiling, a friction brake on the rope to engage brings.
  • the braking device increases the Braking effect of the friction brake with increasing Rope speed, so that even with heavy loads Rappelling speed no illegal, uncontrollable Speed reached.
  • FIG. 1 shows a rope brake device 1 according to the invention on an up / down rope device 2, z. B. one according to WO-A-9 717 107.
  • Friction wheel 3 with rimmed tread which is against a rope 4 is pressed.
  • Both in the rope-up 5 and in the rope-down direction 6 driving wheel 3 is taken along.
  • the pull end 7 of the rope passes through a rope guide 8 (see FIG. 2), which consists of two cheeks formed essentially mirror images of each other 9, 10 (Fig. 3) is composed.
  • One, stationary jaw 9 is firmly connected to the housing 11, while the second jaw 10 is designed to be movable.
  • the jaws 9, 10 are once through a fixed cone 13 or one displaceable on the axis 14, with the Centrifugal unit 16 coupled cone 15 held to others secured by a screw 17 against twisting.
  • a screw 17 On the screw 17 is a bolt 18 with an internal thread screwed on through a hole at the rear end of the Brake shoes 9, 10 passes near the plateaus 19 and is slightly conical to allow movement of the brake shoe 10 allow.
  • the movable shoe 10 tilts over the leading edges of the plateaus when the movable cone 15 through the centrifugal unit towards the solid Cone 13 is moved.
  • the centrifugal unit 16 consists of the friction wheel 3, in which a shaft 20 is rotatably supported. On the outer end the shaft 20 is a planet gear 21, which with a fixed, internally toothed ring gear 22 combs. At the another, inner end of the shaft 20 is seated Planet gear 23, which meshes with the sun gear 24. This planet gear 23 is on by means of a freewheel 25 the shaft 20 attached. The freewheel locks when roped so that about the friction wheel 3 and the planetary gear from the ring gear 22, the gears 21 and 23, the sun gear 24 is rotated.
  • the freewheel 25 decouples the two in the direction of the cable Gears 21 and 23 so that the sun gear 25 is not is driven and the friction wheel is free, light and with can rotate at any speed without one To cause rope braking.
  • the 4 flyweights 26 surround in a symmetrical arrangement the core 27 (Fig. 4), each covering a 90 ° sector.
  • a spiral spring 31 lying outside in the groove 30 holds the Flyweights pressed against the core 27 and forms the Antagonist to centrifugal force.
  • Two pins 32 are inclined into the flyweights 26 used and protrude in the direction of the axis 14 from the Centrifugal weights 26 out.
  • the pins 32 slide in bores 33 in the pressure ring 34.
  • the movable cone 15 is rotatable on a roller bearing 35.
  • a common design criterion for the braking device is, with a load of 150 kg abseiling speeds above Avoid 2 m / s.
  • the threshold and strength of the Brake is selected by appropriate choice of the different involved parts achieved, such as translation of the Planetary gear 21 - 24, weight of the flyweights 26, Strength and characteristics of the spiral spring 31, shape of the Brake shoes 9, 10 and the guide 8, etc.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Braking Arrangements (AREA)
  • Emergency Lowering Means (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Tires In General (AREA)

Abstract

A roller (4) has a flyback-block preventing the roller from rotating during lowering. The cable-brake (1) has cable-speed meter (3,16) co-operating with the cable (7) brake (9,10) where the speed-meter comprises a friction wheel (3) frictionally applied to the roller. The cable-speed meters contain a centrifugal unit (16) with a rotary arrangement of weights (26). The weights enclose a rotary core (27) in symmetrical formation, and have radial guides (28), preferably pins, protruding from it and holding the weights radially and movably. The weights are peripherally pre-tensioned against the core by a sprung elastic element (31) preferably in the form of a spiral spring. Couplings (15,32-34) transmit the effect of the centrifugal force on the weights onto the cable-brake.

Description

Die vorliegende Erfindung bezieht sich auf eine Bremsvorrichtung gemäss Oberbegriff des Anspruchs 1, insbesondere zur Verwendung an Auf/Abseilgeräten.The present invention relates to a braking device according to the preamble of claim 1, in particular for use on descenders.

Auf-/Abseilgeräte, z.B. gemäss der europäischen Patentveröffentlichung EP-A-480 117 der Anmelderin, werden bevorzugt dafür eingesetzt, Personen oder Lasten an einem Seil heraufzuziehen bzw. herunterzulassen. Bevorzugte Einsatzgebiete sind das Rettungswesen oder allgemein der mobile Einsatz dieser Geräte. Die Auf-/Abseilgeräte haben im wesentlichen die Funktion einer Reduktion der Rückhaltekraft beim Abseilen in Verbindung mit einer Sicherung gegen unkontrolliertes Abstürzen der am Seil hängenden Person oder Last.Ascending / descending devices, e.g. according to the European patent publication Applicant's EP-A-480 117 are preferred used to pull people or loads up on a rope or lower. Preferred areas of application are the emergency services or mobile use in general of these devices. The up / down ropes have essentially the function of reducing the retention force when abseiling in connection with a safeguard against uncontrolled The person or load hanging on the rope falls.

Diese bekannten Auf-/Abseilgeräte weisen eine grossvolumige Rolle auf, die mit einer Rücklaufsperre ausgestattet ist. Ein Seil wird meistens in 2½ Windungen um diese Rolle gelegt. Die Bedienung erfolgt derart, dass beim Heraufziehen die Rolle frei läuft und nur einen geringen Widerstand darstellt. Beim Herablassen dagegen wird die Rolle von der Rücklaufsperre blockiert, und das Seil rutscht über die Oberfläche der Rolle. Die dabei auftretende Reibung übernimmt einen Grossteil der Last, die am Seil hängt.These known up / down ropes have a large volume Roll that is equipped with a backstop. A rope is usually wrapped around this reel in 2½ turns. It is operated in such a way that when it is pulled up the role runs freely and represents little resistance. When lowering, however, the role of Backstop is blocked and the rope slips over the Surface of the roll. The resulting friction takes over a lot of the load hanging on the rope.

In der US-4 198 033 wird ein Abseilgerät beschrieben, das eine Rolle aufweist, in der ein Seil läuft. Mit einer Welle, auf der die Rolle gelagert ist, ist eine Bremsvorrichtung wirkverbunden. Die Rotationsbewegung der Rolle wird auf eine Bremseinrichtung übertragen. Die Bremswirkung basiert darauf, dass längsverschiebbare Elemente aufgrund von Zentrifugalkräften und einer Kulissenführung mit Einbuchtungen alternierend beschleunigt und abgebremst werden. In US-4 198 033 a descender is described which has a role in which a rope runs. With a wave on which the roller is mounted is a braking device operatively connected. The rotational movement of the roll is reduced to one Transfer braking device. The braking effect is based on the fact that longitudinally displaceable elements due to Centrifugal forces and a slide guide with indentations alternately accelerated and braked.

Beide Vorgänge sollen der Rotation der Rolle kinetische Energie entziehen und deshalb zu einer Bremswirkung führen. Das Funktionsprinzip der Bremswirkung ist somit reibungslos. Ein wesentlicher Nachteil dieser Vorrichtung besteht darin, dass bei einem Einsatz mit einer Aufseilbewegung ebenfalls eine Bremswirkung entsteht. Bei Auf-/Abseilgeräten ist aber eine Bremswirkung bei Aufseilbewegungen unerwünscht.Both processes are intended to kinetic the rotation of the roll Withdraw energy and therefore lead to a braking effect. The principle of operation of the braking effect is therefore smooth. A major disadvantage of this device is that also when used with a rope movement there is a braking effect. With up / down roping devices is however a braking effect on rope movements undesirable.

Zur Sicherung des Abseilens schlägt die internationale Patentanmeldung WO-A-9 717 107 vor, auf der Zugseite des Auf-/Abseilgerätes einen selbstauslösenden Seilstop vorzusehen. Die Anordnung bietet den Vorteil, dass der Seilstop nur einen Teil der Last übernehmen muss, da das Auf/Abseilgerät den grössten Teil des Zuges aufnimmt. To secure the abseiling, the international one strikes Patent application WO-A-9 717 107 before, on the train side of the Provide a self-releasing rope stop. The arrangement offers the advantage that the rope stop only has to take on part of the load, because the up / down device takes up most of the train.

Nachteilig an dieser Lösung ist jedoch, dass beim Erreichen der kritischen Abseilgeschwindigkeit das Abseilen vollständig gestoppt wird. Insbesondere wenn ein Abseilen nahe der erlaubten Grenze, z. B. 2 m/s, nötig ist, kann ein kurzzeitiges Überschreiten dieser Geschwindigkeitsgrenze den Seilstop auslösen.The disadvantage of this solution, however, is that when it is reached the critical abseiling speed is completely stopped. Especially when rappelling near the allowed limit, e.g. B. 2 m / s, is necessary briefly exceeding this speed limit Trigger rope stop.

Eine Aufgabe der vorliegenden Erfindung besteht darin, eine Vorrichtung anzugeben, die beim Abseilen eine Erhöhung der Abseilgeschwindigkeit über einen vorgegebenen Grenzwert verhindert.An object of the present invention is to provide a Specify device that an increase in abseiling Abseiling speed over a given limit prevented.

Eine Lösung dieser Aufgabe ist in Anspruch 1 angegeben. Die abhängigen Ansprüche geben bevorzugte Ausführungsformen der Erfindung an.A solution to this problem is given in claim 1. The dependent claims give preferred embodiments of the Invention.

Demgemäss wird an einem Auf/Abseilgerät auf der Zugseite eine Bremsvorrichtung angebracht, die bei Überschreiten einer vorgegebenen Geschwindigkeit des Seils, bevorzugt nur beim Abseilen, am Seil eine Reibungsbremse zum Eingriff bringt. Insbesondere erhöht die Bremsvorrichtung die Bremswirkung der Reibungsbremse bei weiter zunehmender Seilgeschwindigkeit, so dass auch bei schweren Lasten die Abseilgeschwindigkeit keine unzulässige, unkontrollierbare Geschwindigkeit erreicht.Accordingly, an up / down rope device on the train side a braking device attached when exceeded a predetermined speed of the rope, preferably only when abseiling, a friction brake on the rope to engage brings. In particular, the braking device increases the Braking effect of the friction brake with increasing Rope speed, so that even with heavy loads Rappelling speed no illegal, uncontrollable Speed reached.

Die Erfindung soll weiter an einem Ausführungsbeispiel unter Bezugnahme auf Figuren erläutert werden.

Fig. 1:
Draufsicht auf Auf/Abseilgerät mit erfindungsgemässer Bremsvorrichtung;
Fig. 2:
einen Schnitt durch die Bremsvorrichtung gemäss II-II in Fig. 1;
Fig. 3:
Draufsicht auf eine Bremsbacke der Seilbremse der Bremsvorrichtung;
Fig. 4:
Draufsicht auf die Zentrifugaleinheit;
Fig. 5 :
einen Schnitt längs der von den Bremsbacken gebildeten Seilführung gemäss V-V in Fig. 3 bei zusammengedrückten Bremsbacken.
The invention will be further explained using an exemplary embodiment with reference to figures.
Fig. 1:
Top view of the up / down cable device with the braking device according to the invention;
Fig. 2:
a section through the braking device according to II-II in Fig. 1;
Fig. 3:
Top view of a brake shoe of the rope brake of the braking device;
Fig. 4:
Top view of the centrifugal unit;
Fig. 5:
a section along the rope guide formed by the brake shoes according to VV in Fig. 3 with compressed brake shoes.

Die Konstruktion des eigentlichen Auf/Abseilgeräts entspricht demjenigen, das in der WO-A-9 717 107 beschrieben ist.The construction of the actual up / down descender corresponds to that described in WO-A-9 717 107 is.

Fig. 1 zeigt eine erfindungsgemässe Seilbremsvorrichtung 1 an einem Auf/Abseilgerät 2, z. B. eines gemäss der WO-A-9 717 107. In der Seilbremsvorrichtung 1 befindet sich ein Reibrad 3 mit randrierter Lauffläche, das gegen ein Seil 4 angedrückt ist. Sowohl in Aufseil- 5 wie in Abseilrichtung 6 wird Treibrad 3 mitgenommen. Das Zugende 7 des Seils durchläuft eine Seilführung 8 (s. Fig. 2), die sich aus zwei im wesentlichen spiegelbildlich zueinander geformten Backen 9, 10 (Fig. 3) zusammensetzt. Die eine, stationäre Backe 9 ist dabei fest mit dem Gehäuse 11 verbunden, während die zweite Backe 10 beweglich ausgeführt ist.1 shows a rope brake device 1 according to the invention on an up / down rope device 2, z. B. one according to WO-A-9 717 107. There is a in the cable brake device 1 Friction wheel 3 with rimmed tread, which is against a rope 4 is pressed. Both in the rope-up 5 and in the rope-down direction 6 driving wheel 3 is taken along. The pull end 7 of the rope passes through a rope guide 8 (see FIG. 2), which consists of two cheeks formed essentially mirror images of each other 9, 10 (Fig. 3) is composed. One, stationary jaw 9 is firmly connected to the housing 11, while the second jaw 10 is designed to be movable.

In der gezeigten Stellung werden die beiden Backen 9, 10 von einer Feder 12 in die geöffnete Ruhestellung gedrückt: In dieser Stellung ist die Führung 8 maximal geöffnet und weist den grössten Querschnitt auf, so dass das Seil 7 im wesentlichen ohne Widerstand durch die Führung hindurchgleitet.In the position shown, the two jaws 9, 10 of a spring 12 pressed into the open rest position: In In this position, the guide 8 is open to the maximum and points the largest cross section, so that the rope 7 in essentially without resistance from the leadership slide through.

Die Backen 9, 10 sind einmal durch einen feststehenden Konus 13 bzw. einen auf der Achse 14 verschiebbaren, mit der Zentrifugaleinheit 16 gekoppelten Konus 15 gehalten, zum anderen durch eine Schraube 17 gegen Verdrehen gesichert. Auf die Schraube 17 ist ein Bolzen 18 mit Innengewinde aufgeschraubt, der durch eine Bohrung am hinteren Ende der Bremsbacken 9, 10 nahe den Plateaus 19 hindurchtritt und leicht konisch ist, um eine Bewegung der Bremsbacke 10 zu erlauben. Beim Bremsen kippt die bewegliche Backe 10 über die Vorderkanten der Plateaus, wenn der bewegliche Konus 15 durch die Zentrifugaleinheit in Richtung auf den festen Konus 13 bewegt wird.The jaws 9, 10 are once through a fixed cone 13 or one displaceable on the axis 14, with the Centrifugal unit 16 coupled cone 15 held to others secured by a screw 17 against twisting. On the screw 17 is a bolt 18 with an internal thread screwed on through a hole at the rear end of the Brake shoes 9, 10 passes near the plateaus 19 and is slightly conical to allow movement of the brake shoe 10 allow. When braking, the movable shoe 10 tilts over the leading edges of the plateaus when the movable cone 15 through the centrifugal unit towards the solid Cone 13 is moved.

Die Zentrifugaleinheit 16 besteht aus dem Reibrad 3, in dem eine Welle 20 drehbar gelagert ist. Auf dem äusseren Ende der Welle 20 sitzt ein Planetenzahnrad 21, das mit einem feststehenden, innenverzahnten Zahnkranz 22 kämmt. Am anderen Ende der Welle 20 sitzt ein weiteres, inneres Planetenzahnrad 23, das mit dem Sonnenzahnrad 24 kämmt. Diese Planetenzahnrad 23 ist mittels eines Freilaufs 25 auf der Welle 20 angebracht. Der Freilauf sperrt, wenn abgeseilt wird, so dass über das Reibrad 3 und das Planetengetriebe aus Zahnkranz 22, den Zahnrädern 21 und 23 das Sonnenrad 24 in Drehbewegung versetzt wird.The centrifugal unit 16 consists of the friction wheel 3, in which a shaft 20 is rotatably supported. On the outer end the shaft 20 is a planet gear 21, which with a fixed, internally toothed ring gear 22 combs. At the another, inner end of the shaft 20 is seated Planet gear 23, which meshes with the sun gear 24. This planet gear 23 is on by means of a freewheel 25 the shaft 20 attached. The freewheel locks when roped so that about the friction wheel 3 and the planetary gear from the ring gear 22, the gears 21 and 23, the sun gear 24 is rotated.

In Aufseilrichtung entkoppelt der Freilauf 25 die beiden Zahnräder 21 und 23, so dass das Sonnenrad 25 nicht angetrieben wird und sich das Reibrad frei, leicht und mit beliebiger Geschwindigkeit drehen kann, ohne eine Seilbremsung zu bewirken.The freewheel 25 decouples the two in the direction of the cable Gears 21 and 23 so that the sun gear 25 is not is driven and the friction wheel is free, light and with can rotate at any speed without one To cause rope braking.

Um die auf die Zentrifugalkraft reagierenden Teile 26 nicht z schwer und nicht zu gross machen zu müssen, ist in der Regel eine Übersetzung vorteilhaft, so dass z. B. das Sonnenrad eine 8fach höherer Umdrehungszahl als das Reibrad 3 aufweist.Not around the parts 26 reacting to the centrifugal force It is difficult to make z difficult and not too big Usually a translation is advantageous, so that e.g. B. that Sun gear an 8 times higher number of revolutions than the friction wheel 3 has.

Mit dem Sonnenrad 24 fest verbunden ist der Kern 27, in den radial nach aussen stehende Stifte 28 eingesetzt sind. Auf jedem Stift 28 ist ein sektorförmiges Fliehgewicht 26 gleitend gelagert. Dazu weisen die Fliehgewichte jeweils eine Bohrung 29 für einen Stift 28 auf.With the sun gear 24, the core 27 is firmly connected pins 28 are inserted radially outward. On each pin 28 is a sector-shaped flyweight 26 slidably mounted. The centrifugal weights indicate this a bore 29 for a pin 28.

Die 4 Fliehgewichte 26 umgeben in symmetrischer Anordnung den Kern 27 (Fig. 4), wobei jeder einen 90°-Sektor abdeckt. Eine aussen in der Nut 30 liegende Spiralfeder 31 hält die Fliehgewichte gegen den Kern 27 gedrückt und bildet den Antagonist zur Zentrifugalkraft.The 4 flyweights 26 surround in a symmetrical arrangement the core 27 (Fig. 4), each covering a 90 ° sector. A spiral spring 31 lying outside in the groove 30 holds the Flyweights pressed against the core 27 and forms the Antagonist to centrifugal force.

In die Fliehgewichte 26 sind je zwei Stifte 32 schräg eingesetzt und ragen in Richtung auf die Achse 14 aus den Fliehgewichten 26 heraus. Die Stifte 32 gleiten in Bohrungen 33 im Druckring 34. Auf dem Druckring 34 sitzt schliesslich drehbar auf einem Wälzlager 35 der bewegliche Konus 15.Two pins 32 are inclined into the flyweights 26 used and protrude in the direction of the axis 14 from the Centrifugal weights 26 out. The pins 32 slide in bores 33 in the pressure ring 34. Finally sits on the pressure ring 34 the movable cone 15 is rotatable on a roller bearing 35.

Sämtliche sich drehenden Teile der Zentrifugaleinheit sind mit geeigneten Lagern 36 reibungsarm auf der Achse 14 und desgleichen die Welle 20 im Reibrad 3 gelagert. Stifte 32 und Stifte 28 bestehen aus Stahl, womit in den aus Messing bestehenden Fliehgewichten 26 und dem Druckring 32 ebenfalls aus Messing gute Gleiteigenschaften erzielt werden.All rotating parts of the centrifugal unit are with suitable bearings 36 low friction on the axis 14 and likewise the shaft 20 is mounted in the friction wheel 3. Pins 32 and pins 28 are made of steel, which in the Brass existing flyweights 26 and the pressure ring 32nd good sliding properties also achieved from brass become.

Beim Abseilen wird das Reibrad 3 vom Seil 4 in Drehbewegung versetzt und damit über das Planetengetriebe auch der Kern 27 und die umgebenden Fliehgewichte 26, da in dieser Richtung der Freilauf 25 sperrt. Ab einer gewissen Drehzahl werden die Fliehgewichte 26 beginnen, sich gegen die Kraft der Spiralfeder 31 nach aussen zu bewegen, bzw. netto auf die Stifte 32 eine nach aussen gerichtete Kraft ausüben. Die Stifte 32 setzen diese nach aussen gerichtete Bewegung und Kraft in eine axial gerichtete Kraft auf die Druckscheibe und damit den Konus 15 um. Der Konus 15 drückt die bewegliche Backe 10 in Richtung auf die feste Backe 9 und verengt damit den Querschnitt der Führung 8, wodurch eine zunehmend stärkere Reibungsbremskraft auf das in der Führung 8 liegende Zugende 7 ausgeübt wird. Zusätzlich befinden sich noch in den Rinnen 37 der Backen 9, 10, die zusammen die Führung 8 bilden, Erhebungen 38, so dass das Seil 7 zu einem zunehmend S-förmigen Verlauf in der Führung 8 gezwungen wird (Fig. 5), wodurch die Reibung weiter erhöht wird.When abseiling, the friction wheel 3 is rotated by the rope 4 offset and thus the core via the planetary gear 27 and the surrounding flyweights 26, as in this Direction of the freewheel 25 locks. From a certain speed the flyweights 26 will begin to counteract the force the spiral spring 31 to move outwards, or net on the pins 32 exert an outward force. The Pins 32 set this outward movement and Force into an axially directed force on the thrust washer and thus the cone 15 um. The cone 15 presses the movable jaw 10 towards the fixed jaw 9 and thus narrows the cross section of the guide 8, whereby a increasingly stronger friction braking force on that in the guide 8 lying pull end 7 is exercised. In addition there are still in the channels 37 of the jaws 9, 10, which together form the Form guide 8, elevations 38 so that the rope 7 to one increasingly S-shaped course in the guide 8 is forced (Fig. 5), which further increases the friction.

Ein gängiges Auslegungskriterium für die Bremsvorrichtung ist, bei einer Last von 150 kg Abseilgeschwindigkeiten über 2 m/s zu vermeiden. Die Einsatzschwelle und -stärke der Bremse wird durch geeignete Wahl der verschiedenen beteiligte Teile erreicht, wie Übersetzung des Planetengetriebes 21 - 24, Gewicht der Fliehgewichte 26, Stärke und Charakteristik der Spiralfeder 31, Form der Bremsbacken 9, 10 und der Führung 8, usw.A common design criterion for the braking device is, with a load of 150 kg abseiling speeds above Avoid 2 m / s. The threshold and strength of the Brake is selected by appropriate choice of the different involved parts achieved, such as translation of the Planetary gear 21 - 24, weight of the flyweights 26, Strength and characteristics of the spiral spring 31, shape of the Brake shoes 9, 10 and the guide 8, etc.

Abwandlungen der Erfindung und insbesondere des dargestellten Ausführungsbeispiels sind dem Fachmann ersichtlich, ohne den Schutzbereich der Erfindung zu verlassen.Modifications of the invention and in particular the illustrated embodiment are the expert can be seen without the scope of the invention leave.

Denkbar ist z. B. , anstelle der schrägen Stifte 32 Kombinationen von Kegel- oder Konusflächen zu verwenden, eventuell auch unter Verwendung von Wälzkörpern. Bei höheren Anforderungen, z. B. für grössere Lasten, kann die Sperrwirkung des Freilaufs 25 überfordert sein. Es ist jedoch möglich, mehr als eine Planetenwelle 20 mit jeweils einem Freilauf 25 vorzusehen, wodurch sich die Last auf die vorhandenen Freiläufe verteilt. Denkbar ist auch eine andere Anzahl von Fliehgewichten mit anderer Form oder anderem Winkel. Auch das Material, aus dem die Fliehgewichte und die Stifte 32 und Stifte 28 bestehen, kann anders gewählt werden, soweit die Verschiebbarkeit auf letzteren gewährt bleibt.It is conceivable, for. B., instead of the oblique pins 32nd To use combinations of conical or conical surfaces possibly also using rolling elements. At higher Requirements, e.g. B. for larger loads, the Locking effect of the freewheel 25 may be overwhelmed. It is however possible to have more than one planetary shaft 20 each provide a freewheel 25, whereby the load on the existing freewheels distributed. Another is also conceivable Number of centrifugal weights with a different shape or different Angle. Also the material from which the flyweights and the Pins 32 and pins 28 exist, can be chosen differently as far as the movability on the latter is granted remains.

Claims (10)

  1. Braking apparatus (1) for a hoisting/lowering device (2), in particular one for safely hoisting and lowering persons and loads using a rope, with a pulley (4) which preferably has a return stop to prevent rotation of the pulley (4) during lowering and is provided with a centrifugal unit with which it is possible to generate centrifugal forces dependent on a speed of the rope, characterized by rope speed measurement means (3, 16) which interact with a rope brake (9, 10) , designed as a friction brake and acting on the rope, in order to apply a frictional braking force to the rope (7) when the rope speed increases above a predetermined maximum speed.
  2. Braking apparatus according to Claim 1, characterized in that the rope speed measurement means comprise a friction wheel (3) which can be brought into frictional engagement with a rope (7) wound onto the pulley (4) of the hoisting/lowering device (2).
  3. Braking apparatus according to either of Claims 1 and 2, characterized in that the rope speed measurement means (3, 16) include a centrifugal unit (16) which comprises a rotatable arrangement of centrifugal weights (26), and in that coupling means (15, 32-34) are present which transmit the action of the centrifugal force on the centrifugal weights (26) to the rope brake (9, 10) in order to apply, to a rope (7), a braking force of the rope brake (9, 10) increasing as the speed of rotation increases.
  4. Braking apparatus according to Claim 3, characterized in that the centrifugal weights (26) are provided in a symmetrical arrangement surrounding a rotatable core (27) from which there extend radial guide means (28), preferably in the form of pins, by which the centrifugal weights are held radially movably, and the arrangement of centrifugal weights is surrounded peripherally by a resiliently elastic element (31), preferably a spiral spring, which pretensions the centrifugal weights (26) against the core (27) .
  5. Braking apparatus according to either of Claims 3 and 4, characterized in that, between the friction wheel (3) and the arrangement of centrifugal weights (26), a gear, in particular a planetary gear (21-25), is arranged in order to set the arrangement of centrifugal weights in rotational movement, preferably at a higher speed of rotation than the friction wheel (3).
  6. Braking apparatus according to one of Claims 1 to 5, characterized in that the rope speed measurement means (2, 16) have a device, in particular a freewheel (25), which interrupts the operative connection to the rope brake (9, 10) and/or preferably an operative connection within the rope speed measurement means upon movement in the hoisting direction (5), in order to prevent a response of the rope brake (9, 10) during hoisting (5).
  7. Braking apparatus according to one of Claims 1 to 6, characterized in that the rope brake (9, 10) comprises a width-adjustable, preferably substantially tubular rope guide (8) for a rope, said guide preferably having elevations and/or depressions (38) in order to impose on the rope (7), upon reduction of the width, an increasingly S-shaped profile so as to increase the braking action.
  8. Braking apparatus according to Claim 7, characterized in that at least one part (10) of the rope guide (8) is movable in order to permit width adjustment of the rope guide (8), and the movable part (10) can be moved by the coupling means (15, 32-34).
  9. Braking apparatus according to one of Claims 3 to 8, characterized in that the coupling means (32, 33, 15) comprise first contact zones (32) present on the centrifugal weights (26), and second contact zones (33) which are present on coupling means (34), displaceable parallel to the axis of rotation of the centrifugal unit, and which are oriented obliquely, in particular at approximately 45°, with respect to the axis of rotation, the first contact zones (32) being designed for sliding or moving of the first contact zones (32) on the second contact zones (33) via interposed rollers in order to convert the force and/or radial displacement of the centrifugal weights (26) under the action of a centrifugal force into a force or movement of the coupling means (15) directed substantially along the length of the axis of rotation (14) .
  10. Hoisting/lowering device with a braking apparatus according to one of the preceding claims.
EP97810359A 1997-06-09 1997-06-09 Braking apparatus for ascending and descending device Expired - Lifetime EP0884067B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT97810359T ATE258074T1 (en) 1997-06-09 1997-06-09 BRAKE DEVICE FOR UP/DOWN DEVICE
DE59711234T DE59711234D1 (en) 1997-06-09 1997-06-09 Braking device for up / down rope device
EP97810359A EP0884067B1 (en) 1997-06-09 1997-06-09 Braking apparatus for ascending and descending device
US09/092,957 US6223868B1 (en) 1997-06-09 1998-06-08 Brake mechanism for device for hauling up/down by rope
CA002240122A CA2240122A1 (en) 1997-06-09 1998-06-08 Brake mechanism for device for hauling up/down by rope

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97810359A EP0884067B1 (en) 1997-06-09 1997-06-09 Braking apparatus for ascending and descending device

Publications (2)

Publication Number Publication Date
EP0884067A1 EP0884067A1 (en) 1998-12-16
EP0884067B1 true EP0884067B1 (en) 2004-01-21

Family

ID=8230255

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97810359A Expired - Lifetime EP0884067B1 (en) 1997-06-09 1997-06-09 Braking apparatus for ascending and descending device

Country Status (5)

Country Link
US (1) US6223868B1 (en)
EP (1) EP0884067B1 (en)
AT (1) ATE258074T1 (en)
CA (1) CA2240122A1 (en)
DE (1) DE59711234D1 (en)

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US7963370B2 (en) * 2005-11-23 2011-06-21 Byung-Sun Hwang System and apparatus for personal high altitude rappel escape safety device
CN101444657B (en) * 2008-12-30 2011-04-06 黄金伦 Grooved pulley sliding cable device
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CN109316672A (en) * 2018-08-21 2019-02-12 叶泓希 A kind of simple automatic lifting escape device of top layer platform
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Also Published As

Publication number Publication date
ATE258074T1 (en) 2004-02-15
US6223868B1 (en) 2001-05-01
DE59711234D1 (en) 2004-02-26
CA2240122A1 (en) 1998-12-09
EP0884067A1 (en) 1998-12-16

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