EP1234089B1 - Catch device for a climbing protection system - Google Patents

Catch device for a climbing protection system Download PDF

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Publication number
EP1234089B1
EP1234089B1 EP00985113A EP00985113A EP1234089B1 EP 1234089 B1 EP1234089 B1 EP 1234089B1 EP 00985113 A EP00985113 A EP 00985113A EP 00985113 A EP00985113 A EP 00985113A EP 1234089 B1 EP1234089 B1 EP 1234089B1
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EP
European Patent Office
Prior art keywords
pawl
fall arrester
attachment point
guide rail
horizontal
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
EP00985113A
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German (de)
French (fr)
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EP1234089A2 (en
Inventor
Klaus Meister
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.)
Honeywell Fall Protection Deutschland GmbH and Co KG
Original Assignee
Sperian Fall Protection Deutschland GmbH and Co KG
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 Sperian Fall Protection Deutschland GmbH and Co KG filed Critical Sperian Fall Protection Deutschland GmbH and Co KG
Publication of EP1234089A2 publication Critical patent/EP1234089A2/en
Application granted granted Critical
Publication of EP1234089B1 publication Critical patent/EP1234089B1/en
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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
    • A62B35/0081—Equipment which can travel along the length of a lifeline, e.g. travelers
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/18—Devices for preventing persons from falling
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/18—Devices for preventing persons from falling
    • E06C7/186—Rail or rope for guiding a safety attachment, e.g. a fall arrest system
    • E06C7/187—Guiding rail

Definitions

  • the invention relates to a safety device for a climbing protection system for preventing a person from falling from a ladder, a pedestal or the like.
  • the catcher runs in a vertical guide rail.
  • the person to be secured carries a safety harness and is connected by a connecting means with the catching device.
  • the catching device has a runner or carriage running in the guide rail.
  • the rotor has a housing and a rotatably mounted therein pawl, which is loaded by a spring. The spring pushes the pawl into a locked position. In the unlocked position, the connecting line between the axis of rotation and the stop point forms an acute angle with the horizontal. In the event of a fall, the pawl then hits against catch pegs or a perforation in the guide rail.
  • the connecting means is attached to the attachment point of the pawl. To descend the pawl is pivoted against the force of the spring in an unlocked position.
  • Such a catching device which is suitable for a fall arrest system, is out EP-A-0 168 021 .
  • DE-A-27 36 037 and DE-A-19 61 757 known.
  • a guide rail with C-profile is used.
  • the edges of the longitudinal opening of the C-profile are the guide flanges on which the catching device is guided.
  • catch pegs are pushed out or holes punched, against which the pawl runs in a crash, so that the locking takes place positively.
  • the pawl points downwards, so that when ascending the pawl passes over the catching pegs or the perforation in the rear wall of the C-profile.
  • the user can lean back (back pull) so that the pawl is pulled away from the rear wall of the guide rail and the carriage can travel freely downhill.
  • this known catching device is not described as absolutely necessary.
  • connection line of the pivot point of the pawl and the abutment point forms an acute angle of about 30 ° with the horizontal and the pawl is pivoted about 25 to 30 ° from the fully unlocked to the fully locked position.
  • the pawl is pressed by a relatively strong spring in the locked position.
  • For distributing the load and the abrasion on the rollers of the pivot point of the pawl is approximately in the middle between the two axes of the rollers.
  • the object of the invention is a catching device, with which one can climb without problems in narrow shafts (descend without backtrack), but which can also be used in the usual way on ladders (dismount with backtrack).
  • this object is achieved in that the catching device is unlocked when the connecting line between the pivot point of the pawl and stop point forms an angle with the horizontal of about 5 °, so that the spring exerts an optimal torque on the pawl, which is smaller than that Torque generated by the weight of the catcher.
  • an angle of about 2 ° to the horizontal is established in the connecting means, the person applying a force of up to about 600 N into the connecting means. Due to different friction between rotor and guide rail or the state of the guide rail, this angle can be slightly smaller (0 °) or larger (4 °). If you want to get off now unhindered, the pawl must remain pulled in this range of 0 ° to 4 ° in any case by the back pull.
  • the stop point of the pawl is below the going through the pivot point of the pawl horizontal.
  • the connecting line of the stop point and pivot point of the pawl forms an angle of approximately 5 ° with the horizontal when the pawl is in the unlocked position. This ensures that the pawl is safe in the unlocked position when dismounting with back pull.
  • the pawl passes through a pivoting of only about 15 ° in the locked position.
  • the pawl protrudes so far from the underside of the rotor out that they against the catch pegs or the perforation in the rear wall of the Guide rail abuts.
  • the distance of the tip of the pivot point is as large as possible.
  • the pivot point is preferably located at the upper end of the rotor and the tip of the pawl at the lower end.
  • the stop point Due to the small angle, the stop point is in the unlocked position below the horizontal and the small pivot angle between unlocked and locked position, the horizontal path is very small, the stop point travels between two positions. Despite the relatively low force of the spring, therefore, the full reliability is guaranteed.
  • the runner is an approximately rectangular housing with a central opening.
  • the pawl is rotatably mounted in the central opening about a horizontal axis of rotation.
  • the catcher is guided by guide means in the guide rail.
  • the guide means are on the outside and inside of the guide flanges of the guide rail.
  • the guide means are provided at the top and bottom of the rotor and can, as from the DE 299 06 047 known, each having two pairs of stationary rollers.
  • two additional standing rollers are provided in the catcher according to the invention, which are in use within the guide rail, wherein the pivot point of the pawl is approximately between these additional rollers and the guide means at the upper end of the catcher.
  • the catcher 10 forms the moving part of a climbing protection system and runs in a guide rail.
  • the secured person wears a safety harness and strikes himself with a connecting means and a snap hook on the capture device 10. The secured person is thereby held in a crash.
  • the catching device 10 has a housing 12 with a central opening 14, in which a pawl 16 is mounted pivotably about a horizontal axis 18. At the upper and lower ends of the catching device 10 are each guide means 20, 22 are provided for guiding the catching device 10 in the guide rail.
  • the guide rail has that off DE 299 06 047 known C-profile with guide flanges along the opening in the front of the C-profile and with a rear wall.
  • the catcher 10 is guided in this opening.
  • the guide means consist of four standing rollers 24, which are arranged in pairs, so that rolls of each pair, a roller 24 on the inside of the guide flanges and one on the outside.
  • the axes of rotation of the rollers 24 are parallel to the horizontal axis of rotation 18 of the pawl sixteenth
  • sliding elements 25 of low-wear, high-density polyethylene with a low coefficient of friction which guides the catch laterally.
  • the housing 12 is provided with a common base 26, which fills almost the entire width of the interior of the C-profile of the guide rail.
  • the widespread base 26 adjoins front and rear directly to stationary rollers 24.
  • the widespread base 26 is interrupted approximately to the upper third by additional standing rollers 28, which are also in use within the C-profile of the guide rail and roll on the inside of the guide flanges.
  • additional rollers 28 the opening 14 is bridged on the underside of the housing 12 by a web 30 which stiffen the housing 12 and the base 26 stabilized. Within the web 30, the axis of the additional rollers 28 runs.
  • the horizontal axis of rotation 18 of the pawl 16 is located approximately between the upper standing rollers 24 and the additional rollers 28 and approximately in the plane of the axes of these roles.
  • the pawl 16 has a tip 32 at the lower end and has as an attachment point an opening 34.
  • the connecting lines between the tip 32 and the axis 18 on the one hand and between the opening 34 and the axis 18 on the other hand form at the axis 18 at an angle of about 90 ° .
  • the pawl 16 is pivotable between a locked position and an unlocked position. In the in FIG. 2 shown locked position, the tip 32 protrudes on the back of the catcher 10. In the unlocked position, the pawl 16 is pivoted back so that its tip 32 flush in the back of the catcher 10 and does not project.
  • a pin 37 On the right side of the catching device 10 is a pin 37, which runs at a wrong orientation of the catcher 10 against a cast on the left side of the guide rail or screwed protruding cam and the catcher 10 stops.
  • a person climbing the ladder wears a harness and strikes the opening 34 of the pawl 16 by means of a lanyard and snap hook.
  • ascending the pawl 16 is pivoted, depending on the attitude taken by the person in the unlocked position, in the Figures 3 and 4 is shown in bold, or, when in the locked position, it travels from below over the catching latches 38 in the rear wall 39 of the guide rail.
  • the person When descending along a ladder with sufficient back freedom, the person leans away from the ladder, exerting a traction illustrated by the arrow 40 up to 600 N on the pawl 16.
  • On the catcher also acts dargestelle by the arrow 42 friction.
  • the pawl 16 is formed so that the line connecting the axis of rotation 18 and opening 34 is approximately 5 ° below the horizontal when the pawl 16 is then in the unlocked position, i. the tip 32 is flush with the rear of the catcher 10.
  • the torque exerted by the spring 36 on the pawl 16 torque can be neglected.
  • the pawl 16 comes into the locked position in which the tip 32 projects on the underside of the catching device 10 and abuts against the catching pawls 38.
  • FIG. 4 In FIG. 4 are the forces acting on the catcher 10 and the pawl 16 when the secured Person descends the ladder without backtrack, as is necessary eg in narrow shafts or ladder ladders.
  • the secured person can not lean back from the ladder, so that the catcher 10 hangs down under its own weight.
  • the arrow 40 is the force acting on the knockout point 34 traction. It therefore points vertically upwards. Since the connecting line between the axis of rotation 18 and the opening 34 is approximately horizontal, acts on the pawl 16, the maximum torque.
  • the spring 36 presses approximately in the middle between the axis 18 and the opening 34 against the pawl 16.
  • the force of the spring 36 which is represented by the arrow 44, is chosen so that the torque exerted by it on the pawl 16 is smaller than the torque generated by the tensile force 40.
  • the size of the tensile force 40 is determined by the weight of the capture device 10. It is opposite to the weight force represented by the arrow 46.

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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)
  • Emergency Lowering Means (AREA)
  • Ladders (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)
  • Toys (AREA)
  • Helmets And Other Head Coverings (AREA)
  • Control And Safety Of Cranes (AREA)
  • Earth Drilling (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Soil Working Implements (AREA)
  • Exchange Systems With Centralized Control (AREA)

Abstract

A fall arrester for a climbing protection system to prevent a person from falling from a ladder, platform, or similar structure. The fall arrester can be guided in a guide rail and has a housing and a pawl with an attachment point where the person to be secured is attached. The pawl is swivellable between an unlocked and a locked position of the fall arrester so that in the unlocked position, the connection line between the rotational axis and the attachment point form an acute angle to the horizontal, and the torque exerted by the spring on the pawl is less than the torque produced by the weight force of the fall arrester when the fall arrester is held at the attachment point.

Description

Die Erfindung betrifft eine Fangeinrichtung für ein Steigschutzsystem zur Verhinderung eines Absturzes einer Person von einer Leiter, einem Podest oder dergleichen. Die Fangeinrichtung läuft in einer vertikal verlaufenden Führungsschiene. Die zu sichernde Person trägt einen Auffanggurt und ist durch ein Verbindungsmittel mit der Fangeinrichtung verbunden. Die Fangeinrichtung weist einen Läufer oder Schlitten auf, der in der Führungsschiene läuft. Der Läufer hat ein Gehäuse und eine darin drehbar gelagerte Sperrklinke, die durch eine Feder belastet ist. Die Feder drückt die Sperrklinke in eine verriegelte Position. In der entriegelten Position bildet die Verbindungslinie zwischen der Drehachse und dem Anschlagpunkt einen spitzen Winkel mit der Waagerechten. Bei einem Absturz stößt die Sperrklinke dann gegen Fangrasten oder eine Lochung in der Führungsschiene. Das Verbindungsmittel wird an dem Anschlagpunkt der Sperrklinke befestigt. Zum Absteigen wird die Sperrklinke gegen die Kraft der Feder in eine entriegelte Position geschwenkt.The invention relates to a safety device for a climbing protection system for preventing a person from falling from a ladder, a pedestal or the like. The catcher runs in a vertical guide rail. The person to be secured carries a safety harness and is connected by a connecting means with the catching device. The catching device has a runner or carriage running in the guide rail. The rotor has a housing and a rotatably mounted therein pawl, which is loaded by a spring. The spring pushes the pawl into a locked position. In the unlocked position, the connecting line between the axis of rotation and the stop point forms an acute angle with the horizontal. In the event of a fall, the pawl then hits against catch pegs or a perforation in the guide rail. The connecting means is attached to the attachment point of the pawl. To descend the pawl is pivoted against the force of the spring in an unlocked position.

Eine derartige Fangeinrichtung, die für ein Steigschutzsystem geeignet ist, ist aus EP-A-0 168 021 , DE-A-27 36 037 und DE-A-19 61 757 bekannt. Bei diesen Steigschutzsystemen wird eine Führungsschiene mit C-Profil verwendet. Die Ränder der längsverlaufenden Öffnung des C-Profils sind die Führungsflansche, auf denen die Fangeinrichtung geführt wird. In der Rückwand des C-Profils sind Fangrasten herausgedrückt oder Aussparungen gelocht, gegen die die Sperrklinke bei einem Absturz läuft, so daß die Arretierung formschlüssig erfolgt.Such a catching device, which is suitable for a fall arrest system, is out EP-A-0 168 021 . DE-A-27 36 037 and DE-A-19 61 757 known. In these fall arrest systems a guide rail with C-profile is used. The edges of the longitudinal opening of the C-profile are the guide flanges on which the catching device is guided. In the rear wall of the C-profile catch pegs are pushed out or holes punched, against which the pawl runs in a crash, so that the locking takes place positively.

Die Sperrklinke zeigt nach unten, so daß beim Aufsteigen die Sperrklinke die Fangrasten oder die Lochung in der Rückwand des C-Profils überfährt. Beim Absteigen entlang der Leiter kann sich der Benutzer zurück lehnen (Rückenzug), so daß die Sperrklinke von der Rückwand der Führungsschiene weggezogen wird und der Schlitten ungehindert abwärts fahren kann. Bei der aus DE-A-2 736 037 und DE-A-1 961 757 bekannten Fangeinrichtung ist dies jedoch nicht als zwingend nötig beschrieben.The pawl points downwards, so that when ascending the pawl passes over the catching pegs or the perforation in the rear wall of the C-profile. When descending along the ladder, the user can lean back (back pull) so that the pawl is pulled away from the rear wall of the guide rail and the carriage can travel freely downhill. At the DE-A-2 736 037 and DE-A-1 961 757 However, this known catching device is not described as absolutely necessary.

Bei diesen Fangeinrichtungen schließt die Verbindungslinie des Drehpunktes der Sperrklinke und des Anschlagpunktes einen spitzen Winkel von etwa 30° mit der Waagerechten ein und wird die Sperrklinke um etwa 25 bis 30° aus der vollständig entriegelten in die vollständig verriegelte Stellung verschwenkt. Aus Gründen der Betriebssicherheit wird die Sperrklinke dabei durch eine relativ kräftige Feder in die verriegelte Stellung gedrückt. Zur Verteilung der Belastung und des Abriebs auf die Laufrollen liegt der Drehpunkt der Sperrklinke ungefähr in der Mitte zwischen den beiden Achsen der Laufrollen.In these trapping the connection line of the pivot point of the pawl and the abutment point forms an acute angle of about 30 ° with the horizontal and the pawl is pivoted about 25 to 30 ° from the fully unlocked to the fully locked position. For reasons of operational reliability, the pawl is pressed by a relatively strong spring in the locked position. For distributing the load and the abrasion on the rollers of the pivot point of the pawl is approximately in the middle between the two axes of the rollers.

In manchen Fällen ist ein Absteigen mit Rückenzug nicht möglich. Um durch enge Schachtabdeckungen, Schächte, Rückenkorbleitern, usw. steigen zu können, muß sich die auf- oder absteigende Person nahe an der Leiter halten. Infolge des fehlenden Rückenzugs wird die Sperrklinke durch die Feder in das Führungsschienenprofil gedrückt, so daß die Fangeinrichtung von den Fangrasten oder der Lochung in der Rückwand der Führungsschiene aufgehalten wird und ein Absteigen nicht möglich ist. Für die Benutzung der Fangeinrichtung in solchen Fällen werden spezielle Läufer verwendet, die so konstruiert sind, daß die Gewichtskraft des Körpers des Läufers größer ist als die Kraft der die Sperrklinke belastenden Feder, so daß die Sperrklinke entriegelt wird, wenn man die Fangeinrichtung am Anschlagpunkt hält.In some cases it is not possible to dismount with the back. In order to climb through narrow manhole covers, shafts, spine ladders, etc., the ascending or descending person must hold himself close to the ladder. Due to the lack of backward pull the pawl is pressed by the spring in the guide rail profile, so that the catching device is held up by the catching pegs or the perforation in the rear wall of the guide rail and a descent is not possible. For the use of the catcher in such cases special runners are used, which are constructed so that the weight of the body of the rotor is greater than the force of the pawl loading spring, so that the pawl is unlocked when the catcher stops at the anchor point ,

Es ist eine Fangrichtung bekannt, die nur für Absteigen ohne Rückenzug verwendbar ist, da durch den Rückenzug die Sperrklinke in die verriegelte Stellung gezogen würde.There is a fishing direction is known, which is only suitable for descending without backward pull, as would be pulled by the back of the pawl in the locked position.

Aus EP-A-0 812 606 ist eine Steigvorrichtung bekannt, die eine Sperrklinke ähnlich der DE-A-19 61 757 aufweist. Die Sperrklinke enthält jedoch keinen Anschlagpunkt für einen Sicherungsgurt, sondern an ihr ist ein Griffrohr befestigt.Out EP-A-0 812 606 a riser device is known which is similar to a pawl DE-A-19 61 757 having. However, the pawl does not contain a stop point for a safety belt, but at her a handle tube is attached.

Die Aufgabe der Erfindung ist eine Fangeinrichtung, mit der man ohne Probleme in enge Schächte steigen kann (Absteigen ohne Rückenzug), die aber auch in üblicher Weise an Leitern (Absteigen mit Rückenzug) benutzt werden kann.The object of the invention is a catching device, with which one can climb without problems in narrow shafts (descend without backtrack), but which can also be used in the usual way on ladders (dismount with backtrack).

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß die Fangeinrichtung entriegelt ist, wenn die Verbindungslinie zwischen Drehpunkt der Sperrklinke und Anschlagpunkt einen Winkel mit der Waagerechten von etwa 5° bildet, so daß die Feder ein optimales Drehmoment auf die Sperrklinke ausübt, das kleiner ist als das durch das Gewicht der Fangeinrichtung erzeugte Drehmoment.According to the invention this object is achieved in that the catching device is unlocked when the connecting line between the pivot point of the pawl and stop point forms an angle with the horizontal of about 5 °, so that the spring exerts an optimal torque on the pawl, which is smaller than that Torque generated by the weight of the catcher.

So kann man die Fangeinrichtung universell bei allen Bedingungen einsetzen und ermöglicht dem Benutzer gleichzeitig den größten Komfort.So you can use the catcher universally in all conditions and allows the user at the same time the greatest comfort.

Beim Absteigen mit Rückenzug stellt sich im Verbindungsmittel ein Winkel von etwa 2° zur Waagerechten ein, wobei die Person eine Kraft von bis zu etwa 600 N in das Verbindungsmittel einbringt. Bedingt durch unterschiedliche Reibung zwischen Läufer und Führungsschiene oder den Zustand der Führungsschiene kann dieser Winkel geringfügig kleiner (0°) oder größer (4°) sein. Will man nun ungehindert absteigen, muß die Sperrklinke in diesem Bereich von 0° bis 4° auf jeden Fall durch den Rückenzug gezogen bleiben.When dismounting with back pull, an angle of about 2 ° to the horizontal is established in the connecting means, the person applying a force of up to about 600 N into the connecting means. Due to different friction between rotor and guide rail or the state of the guide rail, this angle can be slightly smaller (0 °) or larger (4 °). If you want to get off now unhindered, the pawl must remain pulled in this range of 0 ° to 4 ° in any case by the back pull.

Der Anschlagpunkt der Sperrklinke liegt unterhalb der durch den Drehpunkt der Sperrklinke gehenden Waagerechten. Die Verbindungslinie von Anschlagpunkt und Drehpunkt der Sperrklinke bildet einen Winkel von etwa 5° mit der Waagerechten, wenn sich die Sperrklinke in der entriegelten Position befindet. Dadurch wird erreicht, daß sich die Sperrklinke beim Absteigen mit Rückenzug betriebssicher in der entriegelten Position befindet.The stop point of the pawl is below the going through the pivot point of the pawl horizontal. The connecting line of the stop point and pivot point of the pawl forms an angle of approximately 5 ° with the horizontal when the pawl is in the unlocked position. This ensures that the pawl is safe in the unlocked position when dismounting with back pull.

Vorzugsweise gelangt die Sperrklinke durch ein Verschwenken von nur etwa 15° in die verriegelte Position. Die Sperrklinke ragt dabei soweit von der Unterseite des Läufers hervor, daß sie gegen die Fangrasten oder die Lochung in der Rückwand der Führungsschiene stößt. Um trotz dieses relativ kleinen Schwenkwinkels eine ausreichende Verlagerung der Spitze der Sperrklinke zwischen der entriegelten und der verriegelten Position zu erreichen, ist der Abstand der Spitze von dem Drehpunkt möglichst groß. Der Drehpunkt befindet sich dazu vorzugsweise am oberen Ende des Läufers und die Spitze der Sperrklinke am unteren Ende.Preferably, the pawl passes through a pivoting of only about 15 ° in the locked position. The pawl protrudes so far from the underside of the rotor out that they against the catch pegs or the perforation in the rear wall of the Guide rail abuts. In order to achieve a sufficient displacement of the tip of the pawl between the unlocked and the locked position despite this relatively small pivot angle, the distance of the tip of the pivot point is as large as possible. The pivot point is preferably located at the upper end of the rotor and the tip of the pawl at the lower end.

Durch den kleinen Winkel, den der Anschlagpunkt in der entriegelten Position unterhalb der Waagerechten liegt und den kleinen Verschwenkwinkel zwischen entriegelter und verriegelter Position, ist der horizontale Weg sehr klein, den der Anschlagpunkt zwischen beiden Positionen zurücklegt. Trotz der relativ geringen Kraft der Feder ist daher die volle Betriebssicherheit gewährleistet.Due to the small angle, the stop point is in the unlocked position below the horizontal and the small pivot angle between unlocked and locked position, the horizontal path is very small, the stop point travels between two positions. Despite the relatively low force of the spring, therefore, the full reliability is guaranteed.

Insgesamt ist der Läufer ein etwa rechteckförmiges Gehäuse mit einer mittigen Öffnung. Die Sperrklinke ist in der mittigen Öffnung um eine waagrechte Drehachse drehbar gelagert.Overall, the runner is an approximately rectangular housing with a central opening. The pawl is rotatably mounted in the central opening about a horizontal axis of rotation.

Die Fangeinrichtung wird durch Führungseinrichtungen in der Führungsschiene geführt. Die Führungseinrichtungen liegen außen und innen an den Führungsflanschen der Führungsschiene an. Die Führungseinrichtungen sind am oberen und unteren Ende des Läufer vorgesehen und können, wie aus die DE 299 06 047 bekannt, jeweils zwei Paare stehender Rollen aufweisen. Vorzugsweise sind bei der erfindungsgemäßen Fangeinrichtung zwei zusätzliche stehende Rollen vorgesehen, die sich im Einsatz innerhalb der Führungsschiene befinden, wobei der Drehpunkt der Sperrklinke etwa zwischen diesen zusätzlichen Rollen und der Führungseinrichtung am oberen Ende der Fangeinrichtung liegt.The catcher is guided by guide means in the guide rail. The guide means are on the outside and inside of the guide flanges of the guide rail. The guide means are provided at the top and bottom of the rotor and can, as from the DE 299 06 047 known, each having two pairs of stationary rollers. Preferably, two additional standing rollers are provided in the catcher according to the invention, which are in use within the guide rail, wherein the pivot point of the pawl is approximately between these additional rollers and the guide means at the upper end of the catcher.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnung erläutert. Es zeigen:

Figur 1
die Fangeinrichtung in einer isometrischen Ansicht von oben vorne rechts;
Figur 2
die Fangeinrichtung in einer isometrischen Dar- stellung von oben hinten rechts;
Figur 3
die Fangeinrichtung im Vertikalschnitt, wobei die beim Absteigen mit Rückenzug auftretenden Kräfte veranschaulicht sind und
Figur 4
die Fangeinrichtung im Vertikalschnitt, wobei die beim Absteigen ohne Rückenzug auftretenden Kräfte dargestellt sind.
An embodiment of the invention will be explained below with reference to the drawing. Show it:
FIG. 1
the catcher in an isometric view from the top front right;
FIG. 2
the catcher in an isometric view from the top rear right;
FIG. 3
the catcher in vertical section, wherein the forces occurring when descending with backward pull are illustrated and
FIG. 4
the catcher in vertical section, wherein the forces occurring when dismounting without backward pull are shown.

Die Fangeinrichtung 10 bildet den beweglichen Teil eines Steigschutzsystems und läuft in eine Führungsschiene. Die gesicherte Person trägt einen Auffangurt und schlägt sich mit einem Verbindungsmittel und einem Karabinerhaken an der Fangeinrichtung 10 an. Die gesicherte Person wird dadurch bei einem Absturz gehalten.The catcher 10 forms the moving part of a climbing protection system and runs in a guide rail. The secured person wears a safety harness and strikes himself with a connecting means and a snap hook on the capture device 10. The secured person is thereby held in a crash.

Die Fangeinrichtung 10 weist ein Gehäuse 12 mit einer mittigen Öffnung 14 auf, in dem eine Sperrklinke 16 um eine waagrechte Achse 18 verschwenkbar gelagert ist. Am oberen und unteren Ende der Fangeinrichtung 10 sind jeweils Führungseinrichtungen 20, 22 zur Führung der Fangeinrichtung 10 in der Führungsschiene vorgesehen.The catching device 10 has a housing 12 with a central opening 14, in which a pawl 16 is mounted pivotably about a horizontal axis 18. At the upper and lower ends of the catching device 10 are each guide means 20, 22 are provided for guiding the catching device 10 in the guide rail.

Die Führungsschiene hat das aus DE 299 06 047 bekannte C-Profil mit Führungsflanschen längs der Öffnung in der Vorderseite des C-Profils und mit einer Rückwand. Die Fangeinrichtung 10 wird in dieser Öffnung geführt. Die Führungseinrichtungen bestehen aus jeweils vier stehenden Rollen 24, die paarweise angeordnet sind, so daß von jedem Paar eine Rolle 24 auf der Innenseite der Führungsflansche und eine auf der Außenseite abrollt. Die Drehachsen der Rollen 24 liegen parallel zur waagrechten Drehachse 18 der Sperrklinke 16.The guide rail has that off DE 299 06 047 known C-profile with guide flanges along the opening in the front of the C-profile and with a rear wall. The catcher 10 is guided in this opening. The guide means consist of four standing rollers 24, which are arranged in pairs, so that rolls of each pair, a roller 24 on the inside of the guide flanges and one on the outside. The axes of rotation of the rollers 24 are parallel to the horizontal axis of rotation 18 of the pawl sixteenth

Zwischen jedem Paar von Rollen 24 sind Gleitelemente 25 aus verschleißarmem hochdichtem Polyethylen mit niedrigem Reibungsbeiwert eingefügt, die die Fangeinrichtung seitlich führen.Between each pair of rollers 24 are incorporated sliding elements 25 of low-wear, high-density polyethylene with a low coefficient of friction, which guides the catch laterally.

Außerdem ist das Gehäuse 12 mit einer verbreiteten Basis 26 versehen, die nahezu die gesamte Breite des Innenraums des C-Profils der Führungsschiene ausfüllt. Die verbreitete Basis 26 schließt sich vorne und hinten unmittelbar an stehende Rollen 24 an. Die verbreitete Basis 26 wird etwa nach dem oberen Drittel durch zusätzliche stehende Rollen 28 unterbrochen, die im Einsatz ebenfalls innerhalb des C-Profils der Führungsschiene liegen und auf der Innenseite der Führungsflansche abrollen. Bei den zusätzlichen Rollen 28 ist die Öffnung 14 auf der Unterseite des Gehäuses 12 durch einen Steg 30 überbrückt, der das Gehäuse 12 aussteift und die Basis 26 stabilisiert. Innerhalb des Steges 30 läuft die Achse der zusätzlichen Rollen 28.In addition, the housing 12 is provided with a common base 26, which fills almost the entire width of the interior of the C-profile of the guide rail. The widespread base 26 adjoins front and rear directly to stationary rollers 24. The widespread base 26 is interrupted approximately to the upper third by additional standing rollers 28, which are also in use within the C-profile of the guide rail and roll on the inside of the guide flanges. In the additional rollers 28, the opening 14 is bridged on the underside of the housing 12 by a web 30 which stiffen the housing 12 and the base 26 stabilized. Within the web 30, the axis of the additional rollers 28 runs.

Die waagrechte Drehachse 18 der Sperrklinke 16 liegt ungefähr zwischen den oberen stehenden Rollen 24 und den zusätzlichen Rollen 28 und etwa in der Ebene der Achsen dieser Rollen. Die Sperrklinke 16 hat eine Spitze 32 am unteren Ende und hat als Anschlagpunkt eine Öffnung 34. Die Verbindungslinien zwischen der Spitze 32 und der Achse 18 einerseits und zwischen der Öffnung 34 und der Achse 18 andererseits bilden bei der Achse 18 einen Winkel von etwa 90°. Durch eine von oben etwa in der Mitte zwischen der Achse 18 und der Öffnung 34 gegen die Sperrklinke 16 drückende Feder 36 wird die Sperrklinke - in Figur 3 und Figur 4 gesehen - im Uhrzeigersinn verschwenkt, so daß die Spitze 32 der Sperrklinke 16 auf der Rückseite der Fangeinrichtung 10 vorsteht (Figur 2). Die Sperrklinke 16 ist zwischen einer verriegelten Position und einer entriegelten Position verschwenkbar. In der in Figur 2 gezeigten verriegelten Position steht die Spitze 32 auf der Rückseite der Fangeinrichtung 10 vor. In der entriegelten Position ist die Sperrklinke 16 zurückgeschwenkt, so daß ihre Spitze 32 bündig in der Rückseite der Fangeinrichtung 10 liegt und nicht vorsteht.The horizontal axis of rotation 18 of the pawl 16 is located approximately between the upper standing rollers 24 and the additional rollers 28 and approximately in the plane of the axes of these roles. The pawl 16 has a tip 32 at the lower end and has as an attachment point an opening 34. The connecting lines between the tip 32 and the axis 18 on the one hand and between the opening 34 and the axis 18 on the other hand form at the axis 18 at an angle of about 90 ° , By a pressing from above approximately in the middle between the axis 18 and the opening 34 against the pawl 16 spring 36 is the pawl - in FIG. 3 and FIG. 4 pivoted clockwise so that the tip 32 of the pawl 16 on the back of the catching device 10 projects ( FIG. 2 ). The pawl 16 is pivotable between a locked position and an unlocked position. In the in FIG. 2 shown locked position, the tip 32 protrudes on the back of the catcher 10. In the unlocked position, the pawl 16 is pivoted back so that its tip 32 flush in the back of the catcher 10 and does not project.

Auf der rechten Seite der Fangeinrichtung 10 steht ein Stift 37 ab, der bei falscher Ausrichtung der Fangeinrichtung 10 gegen einen auf der linken Seite der Führungsschiene angegossenen oder angeschraubten vorstehenden Nocken läuft und die Fangeinrichtung 10 aufhält.On the right side of the catching device 10 is a pin 37, which runs at a wrong orientation of the catcher 10 against a cast on the left side of the guide rail or screwed protruding cam and the catcher 10 stops.

Eine die Leiter besteigende Person trägt einen Auffanggurt und schlägt sich mittels eines Verbindungsmittels und eines Karabinerhakens an der Öffnung 34 der Sperrklinke 16 an. Beim Aufwärtssteigen wird die Sperrklinke 16 je nach der von der Person eingenommenen Haltung in die entriegelte Position geschwenkt, die in den Figuren 3 und 4 fett eingezeichnet ist, oder, wenn sie sich in der verriegelten Position befindet, fährt sie von unten über die Fangrasten 38 in der Rückwand 39 der Führungsschiene.A person climbing the ladder wears a harness and strikes the opening 34 of the pawl 16 by means of a lanyard and snap hook. When ascending the pawl 16 is pivoted, depending on the attitude taken by the person in the unlocked position, in the Figures 3 and 4 is shown in bold, or, when in the locked position, it travels from below over the catching latches 38 in the rear wall 39 of the guide rail.

Beim Absteigen entlang einer Leiter bei genügender Rückenfreiheit lehnt sich die Person von der Leiter weg und übt dabei eine durch den Pfeil 40 veranschaulichte Zugkraft bis zu 600 N auf die Sperrklinke 16 aus. Auf die Fangeinrichtung wirkt ferner die durch den Pfeil 42 dargestelle Reibung. Die Sperrklinke 16 ist so ausgebildet, daß die Verbindungslinie zwischen Drehachse 18 und Öffnung 34 etwa 5° unterhalb der Waagerechten liegt, wenn sich die Sperrklinke 16 dann in der entriegelten Position befindet, d.h. die Spitze 32 bündig mit der Rückseite der Fangeinrichtung 10 abschließt. Das von der Feder 36 auf die Sperrklinke 16 ausgeübter Drehmoment kann hierbei vernachlässigt werden. Nach Verschwenken um einen Winkel von nur 14,7° gelangt die Sperrklinke 16 in die verriegelte Position, in der die Spitze 32 auf der Unterseite der Fangeinrichtung 10 vorsteht und gegen die Fangrasten 38 stößt.When descending along a ladder with sufficient back freedom, the person leans away from the ladder, exerting a traction illustrated by the arrow 40 up to 600 N on the pawl 16. On the catcher also acts dargestelle by the arrow 42 friction. The pawl 16 is formed so that the line connecting the axis of rotation 18 and opening 34 is approximately 5 ° below the horizontal when the pawl 16 is then in the unlocked position, i. the tip 32 is flush with the rear of the catcher 10. The torque exerted by the spring 36 on the pawl 16 torque can be neglected. After pivoting through an angle of only 14.7 °, the pawl 16 comes into the locked position in which the tip 32 projects on the underside of the catching device 10 and abuts against the catching pawls 38.

In Figur 4 sind die Kräfte dargestellt, die auf die Fangeinrichtung 10 und die Sperrklinke 16 einwirken, wenn die gesicherte Person die Leiter ohne Rückenzug absteigt, wie es z.B. in engen Schächten oder Rückenkorbleitern notwendig ist. Die gesicherte Person kann sich dabei nicht von der Leiter zurücklehnen, so daß die Fangeinrichtung 10 unter ihrem eigenen Gewicht nach unten hängt. Der Pfeil 40 ist die auf den Ausschlagpunkt 34 wirkende Zugkraft. Sie zeigt daher vertikal nach oben. Da die Verbindungslinie zwischen der Drehachse 18 und der Öffnung 34 etwa waagrecht liegt, wirkt auf die Sperrklinke 16 das maximale Drehmoment. Die Feder 36 drückt etwa in der Mitte zwischen der Achse 18 und der Öffnung 34 gegen die Sperrklinke 16. Die Kraft der Feder 36, die durch den Pfeil 44 dargestellt ist, ist dabei so gewählt, daß das von ihr auf die Sperrklinke 16 ausgeübte Drehmoment kleiner ist als das durch die Zugkraft 40 erzeugte Drehmoment. Die Größe der Zugkraft 40 wird dabei durch das Gewicht der Fangeinrichtung 10 bestimmt. Sie ist der durch den Pfeil 46 dargestellten Gewichtskraft entgegengesetzt.In FIG. 4 are the forces acting on the catcher 10 and the pawl 16 when the secured Person descends the ladder without backtrack, as is necessary eg in narrow shafts or ladder ladders. The secured person can not lean back from the ladder, so that the catcher 10 hangs down under its own weight. The arrow 40 is the force acting on the knockout point 34 traction. It therefore points vertically upwards. Since the connecting line between the axis of rotation 18 and the opening 34 is approximately horizontal, acts on the pawl 16, the maximum torque. The spring 36 presses approximately in the middle between the axis 18 and the opening 34 against the pawl 16. The force of the spring 36, which is represented by the arrow 44, is chosen so that the torque exerted by it on the pawl 16 is smaller than the torque generated by the tensile force 40. The size of the tensile force 40 is determined by the weight of the capture device 10. It is opposite to the weight force represented by the arrow 46.

Da die Sperrklinke 16 aus der entriegelten Position, in der die Verbindungslinie zwischen Drehachse 18 und Anschlagpunkt 34 nur 2 bis 5° unter der Waagerechten liegt, nur um 14,7° verschwenkt zu werden braucht, um in die verriegelte Position zu gelangen, ist der horizontale Weg sehr klein, den der Anschlagpunkt dabei zurücklegt. Trotz der relativ geringen Kraft der Feder 36 ist daher die volle Betriebssicherheit gewährleistet.Since the pawl 16 from the unlocked position in which the connecting line between the rotation axis 18 and stop point 34 is only 2 to 5 ° below the horizontal, only needs to be pivoted by 14.7 ° in order to get into the locked position, is the horizontal path very small, which the anchor point travels. Despite the relatively low force of the spring 36, therefore, the full reliability is guaranteed.

Liste der BezugszeichenList of reference numbers

1010
Fangeinrichtungcatcher
1212
Gehäusecasing
1414
Öffnung,Opening,
1616
Sperrklinkepawl
1818
Drechachseaxis of rotation
20, 2220, 22
obere, untere Füh- rungseinrichtungupper, lower guide device
2424
Rollenroll
2525
GleitelementeSliding elements
2626
BasisBase
2828
zusätzliche Rollenadditional roles
3030
Stegweb
3232
Spitzetop
3434
Öffnung, Anschlag- punktOpening, lifting point
3636
Federfeather
3737
Stiftpen
3838
Fangrastencatching stops
3939
Führungsschieneguide rail
4040
Zugkrafttraction
4242
Reibungfriction
4444
Federkraftspring force
4646
Gewichtskraftweight force

Claims (3)

  1. Fall arrester (10) for a climbing protection system which can be guided in a vertically extending guide rail (39) and has a housing (12) and a pawl (16) housed therein rotatably about an axis (18) with an attachment point (34) for attaching a connection means, the pawl (16) being swivellable between an unlocked and a locked position of the fall arrester (10), the pawl (16) being loaded by a spring (36) into the locked position, and in the unlocked position, the connection line between the rotational axis (18) and the attachment point (34) forming an acute angle to the horizontal, such that the torque exerted by the spring (36) on the pawl (16) is less than the torque produced by the weight force of the fall arrester (10) when the fall arrester (10) is held at the attachment point (34), wherein, in the unlocked position of the pawl (16), the connection line between the rotational axis (18) and the attachment point (34) forms an angle of approx. 5° to the horizontal.
  2. Fall arrester according to claim 1, wherein the rotational axis (18) of the pawl (16) is located at the top end of the fall arrester (10).
  3. Fall arrester according to claim 2 with guide devices (20, 22) at the top and bottom ends, wherein additional guide devices (28) in the centre of the fall arrester (10), the rotational axis of the pawl (16) being arranged approx. in the centre between the additional guide device (28) and the guide device (20) at the top end of the fall arrester.
EP00985113A 1999-11-29 2000-11-29 Catch device for a climbing protection system Expired - Lifetime EP1234089B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE29920850U DE29920850U1 (en) 1999-11-29 1999-11-29 Fall arrest system
DE29920850U 1999-11-29
PCT/EP2000/011967 WO2001040611A2 (en) 1999-11-29 2000-11-29 Catch device for a climbing protection system

Publications (2)

Publication Number Publication Date
EP1234089A2 EP1234089A2 (en) 2002-08-28
EP1234089B1 true EP1234089B1 (en) 2010-01-13

Family

ID=8082174

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00985113A Expired - Lifetime EP1234089B1 (en) 1999-11-29 2000-11-29 Catch device for a climbing protection system

Country Status (10)

Country Link
US (1) US6725969B1 (en)
EP (1) EP1234089B1 (en)
AT (1) ATE455230T1 (en)
CZ (1) CZ301395B6 (en)
DE (2) DE29920850U1 (en)
DK (1) DK1234089T3 (en)
ES (1) ES2338296T3 (en)
HU (1) HU227390B1 (en)
PL (1) PL202998B1 (en)
WO (1) WO2001040611A2 (en)

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CN104234403A (en) * 2014-06-24 2014-12-24 武汉天蝎建筑装备有限公司 Ratchet type anti-falling device
CN110528860A (en) * 2019-08-07 2019-12-03 深圳市特辰科技股份有限公司 A kind of climbing frame of runner centrifugation trigger-type catching device

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CN110528860A (en) * 2019-08-07 2019-12-03 深圳市特辰科技股份有限公司 A kind of climbing frame of runner centrifugation trigger-type catching device

Also Published As

Publication number Publication date
DE29920850U1 (en) 2000-02-24
PL355577A1 (en) 2004-05-04
DK1234089T3 (en) 2010-04-12
WO2001040611A2 (en) 2001-06-07
HUP0203417A2 (en) 2003-01-28
ATE455230T1 (en) 2010-01-15
PL202998B1 (en) 2009-08-31
ES2338296T3 (en) 2010-05-06
EP1234089A2 (en) 2002-08-28
WO2001040611A3 (en) 2001-11-22
CZ301395B6 (en) 2010-02-17
US6725969B1 (en) 2004-04-27
CZ20021860A3 (en) 2003-01-15
DE50015845D1 (en) 2010-03-04
HU227390B1 (en) 2011-05-30

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