EP1975368A2 - Collapsible ladder for descending into lift shafts - Google Patents

Collapsible ladder for descending into lift shafts Download PDF

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Publication number
EP1975368A2
EP1975368A2 EP08003881A EP08003881A EP1975368A2 EP 1975368 A2 EP1975368 A2 EP 1975368A2 EP 08003881 A EP08003881 A EP 08003881A EP 08003881 A EP08003881 A EP 08003881A EP 1975368 A2 EP1975368 A2 EP 1975368A2
Authority
EP
European Patent Office
Prior art keywords
ladder
legs
side rails
profile
pits according
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
EP08003881A
Other languages
German (de)
French (fr)
Other versions
EP1975368A3 (en
EP1975368B1 (en
Inventor
Georg Wallraff
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.)
W+w Aufzugkomponenten U Co KG GmbH
Original Assignee
W+w Aufzugkomponenten U Co KG GmbH
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 W+w Aufzugkomponenten U Co KG GmbH filed Critical W+w Aufzugkomponenten U Co KG GmbH
Priority to EP14000502.6A priority Critical patent/EP2740880B1/en
Priority to PL08003881T priority patent/PL1975368T3/en
Publication of EP1975368A2 publication Critical patent/EP1975368A2/en
Publication of EP1975368A3 publication Critical patent/EP1975368A3/en
Application granted granted Critical
Publication of EP1975368B1 publication Critical patent/EP1975368B1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
    • E06C1/383—Foldable ladders in which the longitudinal members are brought together on folding
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/08—Special construction of longitudinal members, or rungs or other treads
    • E06C7/082—Connections between rungs or treads and longitudinal members
    • E06C7/084—Rungs comprising projecting tabs or flanges
    • 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
    • E06C7/188—Accessories for temporary stabilising a ladder, e.g. temporary attaching devices
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/48—Ladder heads; Supports for heads of ladders for resting against objects

Definitions

  • the invention has for its object to make the ladder so that their space requirement is further reduced in the folded state.
  • the invention provides that the legs of the stages in the folded ladder state not receiving side member are shorter than the legs of the steps receiving side rail, whereby the space required for the folded ladder in dependence on the degree of shortening of these legs is further reduced. It should be noted that in elevator shaft pits only a very small storage space is available, so that even slight changes in the space required for the folded ladder are advantageous.
  • the U-profile legs of the steps are inclined at an equal angle with respect to the U-profile base surface forming the step tread surface, and that the articulation points of the steps on the side rails in the area adjacent to the front step side U-profile legs of the steps have a smaller distance from the U-profile base surface than the articulation points in the area adjacent to the rear step side U-profile legs.
  • the inclination of the U-profile legs of the steps relative to the U-profile base surface is thus at an assumed angle of the guide against a wall surface of about 70 ° also 70 °.
  • the adjoining the front step side U-profile legs preferably have a lower height than the rear U-profile legs.
  • the problem arises that the tread surface protrudes one step when folding into the space of the longitudinal axis of the next higher level.
  • Another problem is the not insignificant finger-shear hazard when unfolding the ladder between the step and the top-down pivoting ladder stile.
  • the application and securing device fits universally on shaft access with different pit depth, a sufficient number of pilot holes are present in the ladder beams.
  • the device is mounted here in the course of installation at the appropriate location. Alternatively, it is also possible to attach an additional rail to the spars, with which the application or suspension device can be adjusted continuously.
  • the Anlegeblech is movably connected to both spars and folds out together with the steps.
  • An Anlegeblech with locking pin prevents both a lateral slipping, as well as a Nachhinten fallen.
  • This variant is universally suitable for all types of door thresholds, also for example for revolving doors, which have no guide groove in the door sill.
  • the locking of the Ladder at the exit point takes place here through a hole in the Anlegeblech and a second hole in the door sill. It is also advantageous that the introduction of the hole in the door threshold determines the subsequent installation position, so that for example the door frame can be defined by the user as a handle.
  • Hooks These are hung in the slot of manhole sliding door thresholds.
  • An optional enhancement is to make the hooks retractable. As a result, the required space in the storage position is reduced again.
  • Fold-in hanging plate The attachment plate is movably connected to both bars and folds out together with the steps.
  • the in the FIGS. 1 to 3 shown ladder has two side rails 1, 2 in the form of U-profiles. At the two side rails 1, 2 stages 3 are hinged such that the side rails 1, 2 by pivoting about the pivot axes between the steps and the side rails relative to each other towards or away from each other adjustable, ie collapsible or be unfolded.
  • the legs 1.1 of the side member 1 have a lower height than the legs 2.1 of the second side member 2.
  • one of the two side rails 1, 2 is preferably in the upper spar portion a hole 12, preferably in the form of a normal keyhole, for attaching the folded ladder to a arranged in the shaft wall hook to be mounted.
  • the levels 3 are according to FIG. 9 the shape of U-profiles with respect to the base surface 3.1 at an angle ⁇ parallel to each other obliquely presented legs 3.2 and 3.3 respectively.
  • the angle ⁇ has a corresponding value in accordance with, for example, an angle of inclination ⁇ of the conductors against a support surface or the like in the range of about 70 ° in order to obtain a nearly horizontal tread surface when the conductor is in the shaft;
  • the step depth determining width a 1 of the U-profile base 3.1 is of the order of about 80 mm;
  • the height c 1 of the leg 3.2 is for example about 18 mm and the height b 1 of the leg 3.3 is for example about 44 mm.
  • the dimensions of the side rails 1, 2 forming U-profiles are adapted to the dimensions of the stages, such that the stages taking into account their own dimensions and the position of the pivot points on the side rails in particular in the side rail 2 with respect to the legs 1.1 of Side bars 1 higher U-profile legs 2.1 are collapsible.
  • As articulation points in the area of the side rails 1, 2 are bores 6 in the U-profile legs of the two side rails. These bores 6 essentially define the articulation points of the steps 3 on the side rails 1, 2.
  • the U-profile legs 3.1 and 3.3 are provided with holes 5 (diameter eg 8 mm).
  • the articulation points 5 in the region of the U-profile legs 3.2 adjacent to the front step side have a smaller distance from the step tread area 3.1 than the articulation points 5 in the region of the U-profile legs 3.3 adjoining the rear step side in order to adjust the inclination of the U-profile legs 3.2; 3.3 to allow the unfolding or folding of the ladder.
  • hinge pin 7 For articulating the level 3 on the side rails 1, 2 either relatively short hinge pin 7 or a continuous hinge axis 7.1 may be provided.
  • the steps 3 are each at the ends of the U-profile base, ie the tread surface 3.1 and the U-profile leg 3.3 with partly intermeshing recesses 3.11, 3.12; 3.31; 3.32 provided.
  • the assumed or required conductor-Anlegewinkel and the local position of the through holes 5; 6 certain position of the hinge pin 7 or hinge axes 7.1 is when folding the ladder has the problem that the tread surface of a stage in the space of the next higher level and in the space of the hinge axis thereof protrudes.
  • recesses are mainly in the area of the ends of the U-profiles forming the steps.
  • a compromise must be made, taking into account that the recesses are on the one hand large enough to fold the ladder and off the finger-shear hazard, and on the other hand, not endanger the stability of the individual stages by excessively large recesses or impaired.
  • the recesses provided in the U-profile forming the steps 3 have, for example, the following dimensions: (1) At the U-profile leg 3.3 adjacent recess 3.11 in the base area 3.1: Length in profile longitudinal direction - a 4 about 40 - 45 mm Depth perpendicular to the profile longitudinal direction - a 5 about 30 - 32 mm (2) Recess 3.12: Length in profile longitudinal direction - b 4 about 20 mm Depth perpendicular to the profile longitudinal direction Bevel in the middle area - a 2 + a 3 about 50 mm with possible (3) Recess 3.31 in the leg 3.3: Length in profile longitudinal direction - b 5 about 40 - 45 mm Depth from inner leg side perpendicular to the profile longitudinal direction - b 6 about 25 mm (4) Cut 3.32: Length in thigh longitudinal direction - b 4 about 20 mm Depth perpendicular to the leg longitudinal direction - b 2 about 12 mm.
  • the material thickness of the step profile is preferably on the order of about 2-3 mm.
  • the material thickness of the side rail profiles 1, 2 is preferably on the order of about 2-3 mm.
  • FIG. 5 shows a securing device which is formed by a substantially L-shaped angle section 4, whose one leg is articulated with its ends to the side rails 1.2 and the second leg is directed away from the side rails 1.2 backwards, wherein the free Longitudinal side of the second leg a downward angled fuse strip 4.1 connects.
  • FIG. 6 is in the second leg a bore 4.2 for inserting a preferably attached to the angle profile locking pin 8 is attached.
  • the securing device is formed at least by a hinged to a side rail folding hook 4 ', wherein according to FIG. 8 a rail 9 provided with a guide groove 9 for the folding hook 4 'is mounted. According to FIG. 7 is provided on the folding hook 4 'of a guide stop 10 to ensure the securing position of the folding hook 4'.
  • the difference of 20 mm results from the distance of the hole in the locking plate and the distance to the locking plate-laying leg.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)

Abstract

The foldable stepladder comprises two side beams (1,2) in form of U-profile and steps (3) with the U-profile. The foldable stepladder has a shank (2.1) of the side beam, in which the steps are retractable in a folded condition of the ladder with equal step heights. Another shank (1.1) of the opposite side beam has smaller height than the former shank.

Description

Die Erfindung betrifft eine zusammenklappbare Stufen-Anlegeleiter für Aufzugschachtgruben, bestehend aus

  • zwei Seitenholmen die Form von U-Profilen mit nach innen, d.h. aufeinander zu gerichteten Schenkeln, und
  • Stufen, die im wesentlichen in Form von U-Profilen haben, deren U-Profilschenkel derart an den Seitenholmen angelenkt sind, dass die Seitenholme relativ zueinander aufeinander zu bzw. voneinander weg verstellbar sind, derart, dass die Stufen im zusammengeklappten Zustand der Leiter in den einen Seitenholm eingeklappt sind.
The invention relates to a collapsible step-ladder for hoistway pits, consisting of
  • two side rails the shape of U-profiles with inward, ie facing each other thighs, and
  • Stages which are substantially in the form of U-profiles, whose U-profile legs are hinged to the side rails so that the side rails relative to each other to each other or away from each other are adjustable, such that the steps in the collapsed state of the ladder in the a side rail are folded.

Bei einer derartigen, in der EP 1 749 966 A2 beschriebenen Anlegeleiter liegen die beiden Seitenholme im zusammengeklappten Zustand gegeneinander an, so dass der Raumbedarf der zusammengeklappten Leiter relativ gering ist.In such, in the EP 1 749 966 A2 described laying ladder are the two side rails in the folded state against each other, so that the space required by the folded ladder is relatively low.

Der Erfindung liegt die Aufgabe zugrunde, die Leiter so zu gestalten, dass ihr Raumbedarf im zusammengeklappten Zustand weiter verringert wird.The invention has for its object to make the ladder so that their space requirement is further reduced in the folded state.

Zur Lösung dieser Aufgabe ist erfindungsgemäß vorgesehen, dass die Schenkel des die Stufen im zusammengeklappten Leiterzustand nicht aufnehmenden Seitenholms kürzer sind als die Schenkel des die Stufen aufnehmenden Seitenholms, wodurch der Raumbedarf für die zusammengeklappte Leiter in Abhängigkeit von im Verkürzungsgrad dieser Schenkel weiter verringert wird. Dabei ist zu berücksichtigen, dass in Aufzugsschachtgruben nur ein sehr geringer Speicherraum zur Verfügung steht, so dass selbst geringfügige Veränderungen des Platzbedarfs für die zusammengeklappte Leiter vorteilhaft sind.To solve this problem, the invention provides that the legs of the stages in the folded ladder state not receiving side member are shorter than the legs of the steps receiving side rail, whereby the space required for the folded ladder in dependence on the degree of shortening of these legs is further reduced. It should be noted that in elevator shaft pits only a very small storage space is available, so that even slight changes in the space required for the folded ladder are advantageous.

Gemäß einer bevorzugten Ausführungsform der Erfindung ist vorgesehen, dass die U-Profilschenkel der Stufen parallel unter einem gleichen Winkel gegenüber der die Stufentrittfläche bildenden U-Profilbasisfläche schräg gestellt sind, und dass die Anlenkpunkte der Stufen an den Seitenholmen im Bereich der an die vordere Stufenseite angrenzenden U-Profilschenkel der Stufen einen kleineren Abstand von der U-Profilbasisfläche haben als die Anlenkpunkte im Bereich der an die hintere Stufenseite angrenzenden U-Profilschenkel. Auf diese Weise wird erreicht, dass im Benutzungszustand der Leiter die die Stufentrittfläche bildenden U-Profilbasisflächen bei einer entsprechenden Schrägstellung der Leiter eine im wesentlichen horizontale Lage einnehmen. Die Schrägstellung der U-Profilschenkel der Stufen gegenüber der U-Profilbasisfläche beträgt somit bei einem unterstellten Anlegewinkel der Leiter gegen eine Wandfläche von etwa 70° ebenfalls 70°.According to a preferred embodiment of the invention, it is provided that the U-profile legs of the steps are inclined at an equal angle with respect to the U-profile base surface forming the step tread surface, and that the articulation points of the steps on the side rails in the area adjacent to the front step side U-profile legs of the steps have a smaller distance from the U-profile base surface than the articulation points in the area adjacent to the rear step side U-profile legs. In this way it is achieved that occupy the step tread surface forming U-profile base surfaces at a corresponding inclination of the conductor in a substantially horizontal position in the use state of the head. The inclination of the U-profile legs of the steps relative to the U-profile base surface is thus at an assumed angle of the guide against a wall surface of about 70 ° also 70 °.

Die an die vordere Stufenseite angrenzenden U-Profilschenkel haben vorzugsweise eine geringere Höhe als die hinteren U-Profilschenkel.The adjoining the front step side U-profile legs preferably have a lower height than the rear U-profile legs.

Unter der Voraussetzung, dass die Leiter entsprechend der europäischen Leiternorm EN 131 eine Stufenbreite zwischen den beiden Seitenholmen von mindestens 280 mm und einen maximalen Stufenabstand von 300 mm hat und außerdem ein mittlerer Leiter-Anlegewinkel von 70° angenommen wird, entsteht das Problem, dass die Trittfläche eine Stufe beim Zusammenklappen in den Raum der Längsachse der nächsthöheren Stufe ragt. Ein weiteres Problem ist die nicht unerhebliche Finger-Abschergefahr beim Ausklappen der Leiter zwischen der Stufe und dem von oben nach unten schwenkenden Leiterholm.Assuming that the ladder has a step width between the two side rails of at least 280 mm and a maximum step spacing of 300 mm according to the European ladder standard EN 131, and also a middle ladder contact angle is assumed to be 70 °, the problem arises that the tread surface protrudes one step when folding into the space of the longitudinal axis of the next higher level. Another problem is the not insignificant finger-shear hazard when unfolding the ladder between the step and the top-down pivoting ladder stile.

Diese Probleme werden bei einer bevorzugten Ausführungsform der Erfindung durch spezielle Aussparungen bzw. Ausschnitte in der Stufe gelöst, wobei die Abmessungen der Ausschnitte abhängig sind von den Abmessungen der Stufe und von der Art der Drehachsen-Lagerung der Stufen an den Holmen.These problems are solved in a preferred embodiment of the invention by special recesses or cutouts in the stage, wherein the dimensions of the cutouts are dependent on the dimensions of the stage and on the nature of the rotary axis storage of the steps on the bars.

Die oben genannten Maße beziehen sich auf die genannte europäische Norm. Es versteht sich, dass bei Zugrundelegung anderer Normen entsprechende Maßanpassungen zu berücksichtigen sind.The above dimensions refer to the mentioned European standard. It is understood that appropriate dimensional adjustments must be taken into account when using other standards.

Damit die Anlege- und Sicherungsvorrichtung universell an Schachtzugänge mit unterschiedlicher Grubentiefe passt, sind in den Leiterholmen eine ausreichende Anzahl Vorbohrungen vorhanden. Die Vorrichtung wird hierbei im Zuge der Montage an der entsprechenden Stelle montiert. Alternativ ist es auch möglich, eine zusätzliche Schiene an den Holmen zu befestigen, mit der die Anlege- oder Einhängevorrichtung stufenlos eingestellt werden kann.So that the application and securing device fits universally on shaft access with different pit depth, a sufficient number of pilot holes are present in the ladder beams. The device is mounted here in the course of installation at the appropriate location. Alternatively, it is also possible to attach an additional rail to the spars, with which the application or suspension device can be adjusted continuously.

Grundsätzlich sind verschiedene Anlege- und Sicherungseinrichtungen möglich.In principle, various application and security devices are possible.

Sicherungseinrichtung 1Safety device 1 Klappbares Anlegeblech.Foldable attachment plate.

Das Anlegeblech ist mit beiden Holmen beweglich verbunden und klappt zusammen mit den Stufen aus. Optional ist es vorteilhaft, an der Anlegestelle zusätzlich einen rutschfesten Kunststoff- oder Gummibelag auf das Anlegeblech aufzukleben.The Anlegeblech is movably connected to both spars and folds out together with the steps. Optionally, it is advantageous to stick on the dock additionally a non-slip plastic or rubber coating on the Anlegeblech.

Sicherungseinrichtung 2Safety device 2 Klappbares Anlegeblech mit Sicherungsstift.Folding landing plate with locking pin.

Ein Anlegeblech mit Sicherungsstift verhindert sowohl ein seitliches Verrutschen, wie auch ein Nachhintenfallen. Diese Variante ist universell geeignet für alle Arten von Türschwellen, auch z.B. für Drehtüren, die keine Führungsnut in der Türschwelle haben. Die Arretierung der Leiter an der Ausstiegsstelle erfolgt hierbei durch eine Bohrung im Anlegeblech und eine zweite Bohrung in der Türschwelle. Hierbei ist ebenfalls vorteilhaft, dass die Einbringung der Bohrung in der Türschwelle die anschließende Aufstellposition festlegt, so dass beispielsweise die Türzarge vom Anwender als Haltegriff definiert werden kann.An Anlegeblech with locking pin prevents both a lateral slipping, as well as a Nachhintenfallen. This variant is universally suitable for all types of door thresholds, also for example for revolving doors, which have no guide groove in the door sill. The locking of the Ladder at the exit point takes place here through a hole in the Anlegeblech and a second hole in the door sill. It is also advantageous that the introduction of the hole in the door threshold determines the subsequent installation position, so that for example the door frame can be defined by the user as a handle.

Sicherungseinrichtung 3Safety device 3

Einhängehaken: Diese werden in der Nut von Schachtschiebetürschwellen eingehangen. Eine optionale Verbesserung ist es, die Haken einklappbar auszuführen. Hierdurch wird der benötigte Platz in der Verwahrstellung nochmals verkleinert.Hooks: These are hung in the slot of manhole sliding door thresholds. An optional enhancement is to make the hooks retractable. As a result, the required space in the storage position is reduced again.

Sicherungseinrichtung 4Safety device 4

Klappbares Einhängeblech: Das Anlegeblech ist mit beiden Holmen beweglich verbunden und klappt zusammen mit den Stufen aus.Fold-in hanging plate: The attachment plate is movably connected to both bars and folds out together with the steps.

Die Erfindung wird anhand der Figuren näher beschrieben:

  • Figur 1 zeigt eine perspektivische Darstellung der erfindungsgemäßen Stufen-Anlegeleiter für Aufzugschachtgruben im Benutzungszustand;
  • Figur 2 zeigt die Leiter in teilweise zusammengefaltetem bzw. zusammengeklapptem Zustand;
  • Figur 3 zeigt die Leiter in dem zusammengeklappten Zustand;
  • Figur 4 zeigt eine perspektivische Darstellung einer Leiterstufe;
  • die Figuren 5 bis 8 zeigen ausschnittsweise die bevorzugt am oberen Leiterende angebrachte Sicherungseinrichtungen;
  • Figur 9 zeigt eine Schnittansicht einer Stufe;
  • Figur 10 zeigt eine Abwicklung der in Figur 9 dargestellten Stufe in zwei Seitenansichten und einer Unteransicht;
  • Figur 11 zeigt bei einer Schachthöhe h die Leiter im angelegten Zustand mit einem Anlegewinkel γ.
The invention will be described in more detail with reference to the figures:
  • FIG. 1 shows a perspective view of the invention step-laying ladder for hoistway pits in the use state;
  • FIG. 2 shows the ladder in partially collapsed or folded state;
  • FIG. 3 shows the ladder in the folded state;
  • FIG. 4 shows a perspective view of a conductor stage;
  • the FIGS. 5 to 8 show a detail of the preferred attached to the upper end of the conductor safety devices;
  • FIG. 9 shows a sectional view of a step;
  • FIG. 10 shows a settlement of in FIG. 9 illustrated stage in two side views and a bottom view;
  • FIG. 11 shows at a shaft height h the ladder in the applied state with a contact angle γ.

Die in den Figuren 1 bis 3 dargestellte Leiter hat zwei Seitenholme 1, 2 in Form von U-Profilen. An den beiden Seitenholmen 1, 2 sind Stufen 3 derart angelenkt, dass die Seitenholme 1, 2 durch Verschwenken um die Schwenkachsen zwischen den Stufen und den Seitenholmen relativ zueinander aufeinander zu bzw. voneinander weg verstellbar, d.h. zusammenklappbar bzw. auseinanderklappbar sind. Die Schenkel 1.1 des Seitenholms 1 haben eine geringere Höhe als die Schenkel 2.1 des zweiten Seitenholms 2. In einem der beiden Seitenholme 1, 2 ist bevorzugt im oberen Holmbereich ein Loch 12, bevorzugt in Form eines normalen Schlüssellochs, zum Anhängen der zusammengeklappten Leiter an einem in der Schachtwand anzubringenden Haken angeordnet.The in the FIGS. 1 to 3 shown ladder has two side rails 1, 2 in the form of U-profiles. At the two side rails 1, 2 stages 3 are hinged such that the side rails 1, 2 by pivoting about the pivot axes between the steps and the side rails relative to each other towards or away from each other adjustable, ie collapsible or be unfolded. The legs 1.1 of the side member 1 have a lower height than the legs 2.1 of the second side member 2. In one of the two side rails 1, 2 is preferably in the upper spar portion a hole 12, preferably in the form of a normal keyhole, for attaching the folded ladder to a arranged in the shaft wall hook to be mounted.

Die Stufen 3 haben gemäß Figur 9 die Form von U-Profilen mit gegenüber der Basisfläche 3.1 unter dem Winkel β parallel zueinander schräg gestellten Schenkeln 3.2 bzw. 3.3. Der Winkel β hat entsprechend einem z.B. vorgesehenen Anlegewinkel γ der Leiter gegen eine Stützfläche oder dergleichen im Bereich von etwa 70° einen entsprechenden Wert, um bei in dem Schacht aufgestellter Leiter eine nahezu horizontale Trittfläche zu erhalten; die die Stufentiefe bestimmende Breite a 1 der U-Profilbasis 3.1 liegt in der Größenordnung von etwa 80 mm; die Höhe c 1 des Schenkels 3.2 beträgt beispielsweise etwa 18 mm und die Höhe b 1 des Schenkels 3.3 beträgt beispielsweise etwa 44 mm. Es versteht sich, dass diese Abmessungen nur als Beispiele gelten und in Abhängigkeit von den jeweiligen Anforderungen und den zu beachtenden Normen von den angegebenen Werten abweichen können.The levels 3 are according to FIG. 9 the shape of U-profiles with respect to the base surface 3.1 at an angle β parallel to each other obliquely presented legs 3.2 and 3.3 respectively. The angle β has a corresponding value in accordance with, for example, an angle of inclination γ of the conductors against a support surface or the like in the range of about 70 ° in order to obtain a nearly horizontal tread surface when the conductor is in the shaft; the step depth determining width a 1 of the U-profile base 3.1 is of the order of about 80 mm; the height c 1 of the leg 3.2 is for example about 18 mm and the height b 1 of the leg 3.3 is for example about 44 mm. It goes without saying that these dimensions are only examples and may deviate from the stated values depending on the respective requirements and the standards to be observed.

Die Abmessungen der die Seitenholme 1, 2 bildenden U-Profile sind auf die Abmessungen der Stufen abgestimmt, derart, dass die Stufen unter Berücksichtigung ihrer eigenen Abmessungen und der Position der Anlenkpunkte an den Seitenholmen insbesondere in den Seitenholm 2 mit den gegenüber den Schenkeln 1.1 des Seitenholms 1 höheren U-Profilschenkeln 2.1 einklappbar sind. Als Anlenkpunkte im Bereich der Seitenholme 1, 2 dienen Bohrungen 6 in den U-Profilschenkeln der beiden Seitenholme. Diese Bohrungen 6 definieren im wesentlichen die Anlenkpunkte der Stufen 3 an den Seitenholmen 1, 2.The dimensions of the side rails 1, 2 forming U-profiles are adapted to the dimensions of the stages, such that the stages taking into account their own dimensions and the position of the pivot points on the side rails in particular in the side rail 2 with respect to the legs 1.1 of Side bars 1 higher U-profile legs 2.1 are collapsible. As articulation points in the area of the side rails 1, 2 are bores 6 in the U-profile legs of the two side rails. These bores 6 essentially define the articulation points of the steps 3 on the side rails 1, 2.

Die U-Profilschenkel 3.1 und 3.3 sind mit Bohrungen 5 (Durchmesser z.B. 8 mm) versehen. Die Anlenkpunkte 5 im Bereich der an die vorderen Stufenseite angrenzenden U-Profilschenkel 3.2 haben einen kleineren Abstand von der Stufentrittfläche 3.1 als die Gelenkpunkte 5 im Bereich der an die hintere Stufenseite angrenzenden U-Profilschenkel 3.3, um in Abhängigkeit von der Schrägstellung der U-Profilschenkel 3.2; 3.3 das Auseinanderklappen bzw. Zusammenklappen der Leiter zu ermöglichen.The U-profile legs 3.1 and 3.3 are provided with holes 5 (diameter eg 8 mm). The articulation points 5 in the region of the U-profile legs 3.2 adjacent to the front step side have a smaller distance from the step tread area 3.1 than the articulation points 5 in the region of the U-profile legs 3.3 adjoining the rear step side in order to adjust the inclination of the U-profile legs 3.2; 3.3 to allow the unfolding or folding of the ladder.

Zum Anlenken der Stufe 3 an den Seitenholmen 1, 2 können entweder relativ kurze Gelenkbolzen 7 oder eine durchgehende Gelenkachse 7.1 vorgesehen sein.For articulating the level 3 on the side rails 1, 2 either relatively short hinge pin 7 or a continuous hinge axis 7.1 may be provided.

Gemäß den Figuren 4 und 10 sind die Stufen 3 jeweils an den Enden U-Profilbasis, d.h. der Trittfläche 3.1 sowie des U-Profilschenkels 3.3 mit zum Teil ineinander übergehenden Aussparungen 3.11;3.12; 3.31; 3.32 versehen. In Abhängigkeit von den Abmessungen der die Seitenholme 1, 2 und die Stufen 3 bildenden U-Profile, dem angenommenen bzw. geforderten Leiter-Anlegewinkel und der örtlichen Lage der durch die Bohrungen 5; 6 bestimmten Lage der Gelenkbolzen 7 bzw. Gelenkachsen 7.1 besteht beim Zusammenklappen der Leiter das Problem, dass die Trittfläche einer Stufe in den Raum der nächsthöheren Stufe und in den Raum der Gelenkachse derselben hineinragt. Dieses Problem wird auch hinsichtlich einer möglichen Finger-Abschergefahr durch die Anordnung und Abmessung der einzelnen Aussparungen gelöst, wobei insbesondere die Aussparung 3.11 in der Trittfläche 3.1 und die Aussparung 3.31 in dem U-Profilschenkel 3.3 als "Fingerschutzelemente" ausreichend dimensioniert sein müssen.According to the FIGS. 4 and 10 the steps 3 are each at the ends of the U-profile base, ie the tread surface 3.1 and the U-profile leg 3.3 with partly intermeshing recesses 3.11, 3.12; 3.31; 3.32 provided. Depending on the dimensions of the side beams 1, 2 and the steps 3 forming U-profiles, the assumed or required conductor-Anlegewinkel and the local position of the through holes 5; 6 certain position of the hinge pin 7 or hinge axes 7.1 is when folding the ladder has the problem that the tread surface of a stage in the space of the next higher level and in the space of the hinge axis thereof protrudes. This problem is also solved in terms of a possible finger-shear hazard by the arrangement and dimension of the individual recesses, in particular the recess 3.11 in the tread surface 3.1 and the recess 3.31 in the U-profile leg 3.3 as "finger protection" must be sufficiently dimensioned.

Diese Aussparungen liegen hauptsächlich im Bereich der Enden der die Stufen bildenden U-Profile. Hinsichtlich der Anordnung und Größe der Aussparungen ist ein Kompromiss zu schließen unter Berücksichtigung dessen, dass die Aussparungen einerseits ausreichend groß sind, um die Leiter zusammenklappen zu können und die Finger-Abschergefahr auszuschalten, und andererseits die Stabilität der einzelnen Stufen nicht durch übermäßig große Aussparungen gefährdet bzw. beeinträchtigt wird.These recesses are mainly in the area of the ends of the U-profiles forming the steps. With regard to the arrangement and size of the recesses, a compromise must be made, taking into account that the recesses are on the one hand large enough to fold the ladder and off the finger-shear hazard, and on the other hand, not endanger the stability of the individual stages by excessively large recesses or impaired.

Gemäß einer Ausführungsform haben die in dem die Stufen 3 bildenden U-Profil angebrachten Aussparungen beispielsweise folgende Abmessungen: (1) An den U-Profilschenkel 3.3 angrenzende Aussparung 3.11 in der Basisfläche 3.1: Länge in Profillängsrichtung - a4 etwa 40 - 45 mm Tiefe senkrecht zur Profillängsrichtung - a5 etwa 30 - 32 mm (2) Aussparung 3.12: Länge in Profillängssrichtung - b4 etwa 20 mm Tiefe senkrecht zur Profillängsrichtung Abschrägung im mittleren Bereich - a2 + a3 etwa 50 mm mit eventueller (3) Aussparung 3.31 im Schenkel 3.3: Länge in Profillängsrichtung - b5 etwa 40 - 45 mm Tiefe ab Schenkelinnenseite senkrecht zur Profillängsrichtung - b6 etwa 25 mm (4) Ausparung 3.32: Länge in Schenkellängsrichtung - b4 etwa 20 mm Tiefe senkrecht zur Schenkellängsrichtung - b2 etwa 12 mm. According to one embodiment, the recesses provided in the U-profile forming the steps 3 have, for example, the following dimensions: (1) At the U-profile leg 3.3 adjacent recess 3.11 in the base area 3.1: Length in profile longitudinal direction - a 4 about 40 - 45 mm Depth perpendicular to the profile longitudinal direction - a 5 about 30 - 32 mm (2) Recess 3.12: Length in profile longitudinal direction - b 4 about 20 mm Depth perpendicular to the profile longitudinal direction Bevel in the middle area - a 2 + a 3 about 50 mm with possible (3) Recess 3.31 in the leg 3.3: Length in profile longitudinal direction - b 5 about 40 - 45 mm Depth from inner leg side perpendicular to the profile longitudinal direction - b 6 about 25 mm (4) Cut 3.32: Length in thigh longitudinal direction - b 4 about 20 mm Depth perpendicular to the leg longitudinal direction - b 2 about 12 mm.

Die Materialdicke des Stufenprofils liegt bevorzugt in der Größenordnung von etwa 2 - 3 mm Die Materialdicke der Seitenholmprofile 1, 2 liegt bevorzugt in der Größenordnung von etwa 2-3mm.The material thickness of the step profile is preferably on the order of about 2-3 mm. The material thickness of the side rail profiles 1, 2 is preferably on the order of about 2-3 mm.

Figur 5 zeigt eine Sicherungseinrichtung, die durch ein im wesentlichen L-förmiges Winkelprofil 4 gebildet ist, dessen einer Schenkel mit seinen Enden an den Seitenholmen 1,2 angelenkt ist und dessen zweiter Schenkel nach hinten von den Seitenholmen 1,2 weggerichtet ist, wobei an die freie Längsseite des zweiten Schenkels eine nach unten abgewinkelte Sicherungsleiste 4.1 anschließt. Gemäß Figur 6 ist in dem zweiten Schenkel eine Bohrung 4.2 zum Durchstecken eines vorzugsweise an dem Winkelprofil angehängten Sicherungsstiftes 8 angebracht. FIG. 5 shows a securing device which is formed by a substantially L-shaped angle section 4, whose one leg is articulated with its ends to the side rails 1.2 and the second leg is directed away from the side rails 1.2 backwards, wherein the free Longitudinal side of the second leg a downward angled fuse strip 4.1 connects. According to FIG. 6 is in the second leg a bore 4.2 for inserting a preferably attached to the angle profile locking pin 8 is attached.

Gemäß den Figuren 7 und 8 ist die Sicherungseinrichtung mindestens durch einen an einem Seitenholm angelenkten Klapphaken 4' gebildet, wobei gemäß Figur 8 eine mit einer Führungsnut 9.1 versehene Schiene 9 für den Klapphaken 4' angebracht ist. Gemäß Figur 7 ist an dem Klapphaken 4' eines Führungsanschlags 10 vorgesehen, um die Sicherungsposition des Klapphakens 4' zu gewährleisten.According to the FIGS. 7 and 8 the securing device is formed at least by a hinged to a side rail folding hook 4 ', wherein according to FIG. 8 a rail 9 provided with a guide groove 9 for the folding hook 4 'is mounted. According to FIG. 7 is provided on the folding hook 4 'of a guide stop 10 to ensure the securing position of the folding hook 4'.

Zum Anbringen der Sicherungseinrichtung in unterschiedlichen, von den jeweiligen Gegebenheiten abhängigen Stellungen sind in den oberen Bereichen der Seitenholme 1, 2 Bohrungen 11 angebracht, deren Abstand 1 vom Leiterfuß bei unter einem Anlegewinkel γ aufgestellter Leiter in Abhängigkeit von der Schachtgrubentiefe h wie folgt ist: 1 = h sinα - 20 mm

Figure imgb0001
For attaching the securing device in different, depending on the particular circumstances positions 11 holes are in the upper regions of the side rails 1, whose distance 1 from the ladder foot at an angle of contact γ upright depending on the shaft pit depth h as follows: 1 = H sin .alpha - 20 mm
Figure imgb0001

Die Differenz von 20 mm ergibt sich aus dem Abstand der Bohrung im Sicherungsblech und der Distanz zum Sicherungsblech-Anlegeschenkel.The difference of 20 mm results from the distance of the hole in the locking plate and the distance to the locking plate-laying leg.

Claims (14)

Zusammenklappbare Stufen-Anlegeleiter für Aufzugschachtgruben, bestehend aus - zwei Seitenholmen (1, 2) in Form von U-Profilen mit nach innen, d.h. aufeinander zu gerichteten Schenkeln (1.1; 2.1), und - Stufen (3), die im wesentlichen die Form von U-Profilen haben, deren U-Profilschenkel (3.2, 3.3) derart an den Seitenholmen (1, 2) angelenkt sind, dass die Seitenholme (1, 2) relativ zueinander aufeinander zu bzw. voneinander weg verstellbar sind, dadurch gekennzeichnet, dass die Schenkel (2.1) des Seitenholms (2), in den die Stufen (3) im zusammengeklappten Zustand der Leiter einklappbar sind, eine an die Stufenhöhe angepasste Höhe haben, während die Schenkel (1.1) des gegenüberliegenden Seitenholms (1) eine geringere Höhe als die Schenkel (2.1) haben.Collapsible step ladder for hoistway pits, consisting of - Two side rails (1, 2) in the form of U-profiles with inwardly, ie towards each other directed legs (1.1, 2.1), and - Steps (3), which have substantially the shape of U-profiles whose U-profile legs (3.2, 3.3) are hinged to the side rails (1, 2), that the side rails (1, 2) relative to each other to or are away from each other, characterized in that the legs (2.1) of the side spar (2), in which the steps (3) are folded in the folded state of the ladder, have a height adapted to the step height, while the legs (1.1) of the opposite side spar (1) have a lower height than the legs (2.1). Stufen-Anlegeleiter für Aufzugschachtgruben nach Anspruch 1, dadurch gekennzeichnet, dass die U-Profilschenkel (3.2; 3.3) der Stufen parallel unter einem gleichen Winkel gegenüber der U-Profilbasisfläche (3.1) schräg gestellt sind, und dass die Anlenkpunkte (5) der Stufen (3) an den Seitenholmen (1, 2) im Bereich der an die vordere Stufenseite angrenzenden U-Profilschenkel (3.2) einen kleineren Abstand von der die Stufentrittfläche bildenden Basisfläche (3.1) haben als die Anlenkpunkte (5) im Bereich der an die hintere Stufenseite angrenzenden U-Profilschenkel (3.3).Stepping ladder for hoistway pits according to claim 1, characterized in that the U-profile legs (3.2, 3.3) of the steps are set parallel at an equal angle to the U-profile base surface (3.1), and that the articulation points (5) of the steps (3) on the side rails (1, 2) in the region of the U-profile limb (3.2) adjoining the front step side have a smaller distance from the base surface (3.1) forming the step tread surface than the articulation points (5) in the region at the rear Step side adjacent U-profile legs (3.3). Stufen-Anlegeleiter für Aufzugschachtgruben nach Anspruch 2, dadurch gekennzeichnet, dass die U-Profilschenkel (3.2) eine geringere Höhe haben als die U-Profilschenkel (3.3).Step ladder for hoistway pits according to claim 2, characterized in that the U-profile legs (3.2) have a lower height than the U-profile legs (3.3). Stufen-Anlegeleiter für Aufzugschachtgruben nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die U-Profile der Stufen (3) angrenzend an die Stufenenden mit Aussparungen (3.11; 3.12; 3.31; 3.32) versehen sind, die eine gegenseitige Beeinträchtigung der Stufenenden bei zusammengeklappter, d.h. gegeneinander anliegender Stellung der Seitenholme (1, 2) ausschalten und außerdem Fingerquetschungen beim Ausklappen verhindernLift ladder for hoistway pits according to any one of claims 1 to 3, characterized in that the U-profiles of the steps (3) are provided adjacent to the step ends with recesses (3.11; 3.12; 3.31; 3.32) which interfere with one another switch off when folded, ie against each other position of the side rails (1, 2) and also prevent finger crushing when unfolding Stufen-Anlegeleiter für Aufzugschachtgruben nach Anspruch 1, dadurch gekennzeichnet, dass die Anlenkpunkte (5) der Stufen an den Seitenholmen (1, 2) im Bereich von nach außen vorspringenden Verlängerungen der U-Profilschenkel (3.2; 3.3) liegen.Step ladder for elevator shaft pits according to claim 1, characterized in that the articulation points (5) of the steps on the side rails (1, 2) in the region of outside projecting extensions of the U-profile legs (3.2, 3.3) lie. Stufen-Anlegeleiter für Aufzugschachtgruben nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Anlenkpunkte (6) im Bereich der Seitenholme (1.2) und die Anlenkpunkte (5) im Bereich der Stufen (3) durch Bohrungen und durch die Bohrungen hindurchgesteckte Gelenkbolzen (7) oder eine durchgehende Gelenkachse (7.1) gebildet sind.Stepping ladder for hoistway pits according to one of claims 1 to 5, characterized in that the articulation points (6) in the region of the side rails (1.2) and the articulation points (5) in the region of the steps (3) through holes and through the holes inserted through hinge pins (7) or a continuous hinge axis (7.1) are formed. Stufen-Anlegeleiter für Aufzugschachtgruben nach einem der Ansprüche 1 bis 6, enthaltend eine am oberen Leiterende angebrachte Sicherungseinrichtung zum Sichern der Leiter in Ihrer Anlegestellung, dadurch gekennzeichnet, dass die Seitenholme im oberen Bereich mit einer Vielzahl von Bohrungen (11) versehen sind, um die Sicherungseinrichtung in Abhängigkeit von der Grubentiefe in unterschiedlichen Höhenstellungen an der Ausstiegsstelle anlegen und/oder befestigen zu können.Lift ladder for elevator shaft pits according to one of claims 1 to 6, comprising a securing device attached to the upper end of the ladder for securing the ladder in its lay-up position, characterized in that the side uprights are provided with a plurality of bores (11) in the upper area Create safety device depending on the pit depth in different height positions at the exit point and / or fix. Stufen-Anlegeleiter für Aufzugschachtgruben nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Sicherungseinrichtung durch ein im wesentlichen L-formiges Winkelprofil (4) gebildet ist, dessen einer Schenkel mit seinen Enden an den Seitenholmen angelenkt ist und dessen zweiter Schenkel nach hinten von den Seitenholmen weggerichtet ist.Stepping ladder for hoistway pits according to one of claims 1 to 7, characterized in that the securing device is formed by a substantially L-shaped angle section (4), one leg of which is hinged at its ends to the side rails and the second leg to the rear directed away from the side rails. Stufen-Anlegeleiter für Aufzugschachtgruben nach Anspruch 8, gekennzeichnet durch eine an die freie Längsseite des zweiten Schenkels angrenzende, nach unten abgewinkelte Sicherungsleiste (4.1).Stepping ladder for hoistway pits according to claim 8, characterized by an adjacent to the free longitudinal side of the second leg, downwardly angled fuse strip (4.1). Stufen-Anlegeleiter für Aufzugschachtgruben nach Anspruch 7 oder 8, gekennzeichnet durch eine in dem zweiten Schenkel angebrachte Bohrung (4.2) zum Durchstecken eines vorzugsweise an dem Winkelprofil angehängten Sicherungsstiftes (8).Stepping ladder for hoistway pits according to claim 7 or 8, characterized by a hole (4.2) mounted in the second leg for passing through a securing pin (8) which is preferably attached to the angle section. Stufen-Anlegeleiter für Aufzugschachtgruben nach Anspruch 7, dadurch gekennzeichnet, dass die Sicherungseinrichtung mindestens durch einen an einem Seitenholm angelenkten Klapphaken (4') gebildet ist.Stepping ladder for elevator shaft pits according to claim 7, characterized in that the securing device is formed at least by a hinged to a side rail folding hook (4 '). Stufen-Anlegeleiter für Aufzugschachtgruben nach Anspruch 11, dadurch gekennzeichnet, dass an mindestens einem Seitenholm eine mit einer Führungsnut (9.1) versehene Schiene (9) in unterschiedlichen Höhenstellungen angebracht ist.Stepped leveling ladder for hoistway pits according to claim 11, characterized in that a rail (9) provided with a guide groove (9.1) is mounted in different height positions on at least one side rail. Stufen-Anlegeleiter für Aufzugschachtgruben nach Anspruch 10 oder 11, gekennzeichnet durch einen Sicherungsanschlag (10) an dem Klapphaken (4'), um die Sicherungsposition desselben zu gewährleisten.Stepping ladder for hoistway pits according to claim 10 or 11, characterized by a securing stop (10) on the folding hook (4 ') in order to ensure the securing position thereof. Stufen-Anlegeleiter für Aufzugschachtgruben nach einem der Ansprüche 1 bis 13, gekennzeichnet durch ein in einem der beiden Leiterholme (1, 2) angebrachtes Loch (12), bevorzugt in Schlüssellochform, um die Leiter im zusammengeklappten Zustand zur Verwahrung an einem Haken an der Schachtwand aufhängen zu können.Step ladder for elevator shaft pits according to one of claims 1 to 13, characterized by a hole (12) mounted in one of the two ladder stiles (1, 2), preferably in keyhole shape, around the ladder in the folded state for storage on a hook on the shaft wall to hang up.
EP08003881.3A 2007-03-28 2008-03-03 Collapsible ladder for descending into lift shafts Active EP1975368B1 (en)

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EP14000502.6A EP2740880B1 (en) 2007-03-28 2008-03-03 Collapsible ladder for descending into lift shafts
PL08003881T PL1975368T3 (en) 2007-03-28 2008-03-03 Collapsible ladder for descending into lift shafts

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DE102007014826A DE102007014826B3 (en) 2007-03-28 2007-03-28 Collapsible step ladders for descent into hoistway pits

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USD966556S1 (en) 2019-12-13 2022-10-11 Murphy Ladder Llc Ladder

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EP1975368A3 (en) 2012-10-31
EP2740880A1 (en) 2014-06-11
PL1975368T3 (en) 2015-03-31
EP1975368B1 (en) 2014-10-15
DE102007014826B3 (en) 2008-12-18
EP2740880B1 (en) 2016-05-04
ES2585577T3 (en) 2016-10-06
ES2524874T3 (en) 2014-12-15

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