EP0727559B1 - Mobile frame and ladder for scaffolding respectively for working platform - Google Patents

Mobile frame and ladder for scaffolding respectively for working platform Download PDF

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Publication number
EP0727559B1
EP0727559B1 EP96101988A EP96101988A EP0727559B1 EP 0727559 B1 EP0727559 B1 EP 0727559B1 EP 96101988 A EP96101988 A EP 96101988A EP 96101988 A EP96101988 A EP 96101988A EP 0727559 B1 EP0727559 B1 EP 0727559B1
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EP
European Patent Office
Prior art keywords
stand according
frame
rotatable
main frame
locking element
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Expired - Lifetime
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EP96101988A
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German (de)
French (fr)
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EP0727559A1 (en
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FAMI Deutschland Handelsgesellschaft mbH
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FAMI Deutschland Handelsgesellschaft mbH
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    • 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
    • E06C1/397—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 characterised by having wheels, rollers, or runners
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/24—Scaffolds primarily resting on the ground comprising essentially special base constructions; comprising essentially special ground-engaging parts, e.g. inclined struts, wheels
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/24—Scaffolds primarily resting on the ground comprising essentially special base constructions; comprising essentially special ground-engaging parts, e.g. inclined struts, wheels
    • E04G2001/242—Scaffolds movable on wheels or tracks

Definitions

  • the invention relates to a movable frame with a Number of rollers with which the frame can be moved freely is, one or more feet, opposite the roles can be raised and lowered, so that in the lowered state the frame stands securely on the floor Frame also has one or more steps, of which at least one is movably mounted to over load an operating mechanism to lower the feet.
  • a scaffolding or Podium leader is a scaffolding or Podium leader.
  • Scaffolding or platform ladders that have such a frame include, which can be moved on wheels on the one hand and that rests on feet when in use are in different designs known.
  • platform ladders with a frame the rollers are attached, provided between the Rollers and the frame springs are installed, so that at Load the ladder the springs are compressed and the ladder on the corresponding feet on the floor sits on.
  • the springs press the entire ladder and the rack up, making the Ladder on the rollers freely movable in all directions is.
  • the problem with this type of platform ladder is that the ladder is not stable if the load is too low on the feet is guaranteed. Furthermore, at for example remaining heavy tool boxes on the May not lead them into a movable position is pushed up by the appropriate springs.
  • a platform ladder is known, spread over one Lifting device of a manually operated lever rolls can be lifted in relation to the feet of the ladder or can be lowered so that the ladder can be moved on the rollers is.
  • By moving the lever in the opposite direction Lowered feet opposite the rollers so that the Ladder resting on the feet.
  • a bottom step is steeply up is folded up so that an ascent is only possible when standing safely the leader is done.
  • this type of ladder exists the problem that even when the lever is not operated possibly a second step and thus on the ladder can be climbed, which is a security hazard represents because the ladder continues on the roles slidably rests.
  • US-A-2 708 652 is a movable frame or one Head known that has a number of roles with which the frame or the ladder can be moved freely. Of there are also two front feet opposite the roles assigned to this can be raised and lowered. In lowered state rests that known from this document Frame on the two front feet. Furthermore points the well-known ladder up several levels, one of which level is movably mounted. When the movable stage is loaded the feet are actuated lowered. Finally, a lifting element is in the form of a Pedals known that the feet from the floor when loaded takes off, which simultaneously moves the movable step into the original position is returned.
  • US-A-3 155 190 discloses a movable frame, which has a movable step.
  • a Bracket provided with the lifting and lowering feet from Floor can be lifted off.
  • US-A-3,291,254 is a movable one Frame shown in the front casters via a movable Level opposite arranged in the area of these roles The feet can be raised or lowered.
  • the technical problem underlying the invention exists in creating a frame that is already climbing the frame an even better stability guaranteed.
  • the invention is based on the idea that through The ladder automatically ascends the frame or the ladder from the traversing position to the safe standing position on the Feet is brought.
  • a rotatable or slidable step ensures that by ascending to this level through the Actuation mechanism the level from a first to one second position is rotated or shifted, whereby via an actuating mechanism or the feet be lowered and thus the frame securely on the Feet rests.
  • the lifting element Stepping load achieved that the feet from the floor lift off, simultaneously using the actuating mechanism the rotatable step is turned back to the first position becomes. This ensures that the rotatable step in movable condition of the frame always in a slightly rotated Location comes to rest.
  • the invention automatically secure stability is achieved on the feet on the base frame pivotally arranged support frame with the or the roles are already over when climbing the frame the actuating mechanism relieves the rollers quickly and thus the frame slides from the start prevented.
  • the lowest stage is advantageous rotatably mounted since a user normally climbs of the rack enters the lowest level. It is to increase For security reasons, however, several of the lower ones are possible Steps to be rotatably supported and coupled so that even when using the second or even the third stage each automatically lowering the actuating mechanism of the frame on the feet.
  • Points is stored on a base frame of the frame and the feet are arranged on this base frame is in constructively simple manner when using secure frame or a safe scaffolding or platform ladder created.
  • Base frame By pivoting the support frame by means of swivel arms Base frame is arranged is a very simple and inexpensive construction created.
  • the swivel arms are advantageously on the base frame and on Support frame rotatably mounted.
  • the pivot points are on Support frame offset to the pivot points on the base frame arranged. This is due to the weight of the Head achieved that by light actuation or by light load on the rotatable step, causing a stop is rotated, the frame on the feet to stand is coming. There are only very small forces to twist the rotatable stage necessary, i.e. only the trigger forces for pivoting the actuating mechanism.
  • the actuating mechanism Locking element comprises, which is rotatably mounted on the base frame and with one end on the lower side of the rotatable stage slidably and with its other end by a spring attached to the support frame against the Inside of the rotating stage is pressed. So that becomes a very simple and at the same time only very low power required triggering with rotation of the rotatable stage created.
  • the locking element has a shoulder on a appropriate fitting on the support frame when the The feet are raised is only a very small one Angle between the first and second position of the rotatable stage necessary to trigger a locking element, so that the safe standing position is taken.
  • Pedal lever consists of a U-shaped tube, which with its Legs are welded to the associated swivel arms.
  • a scaffolding or platform ladder with an inventive Frame, as described above, has a very large Safety when using.
  • the first Embodiment corresponds essentially to that in the 4 to 7 shown second embodiment. Only the locking elements with the rotatable stage 4 and Support frame 7 are connected, and the kick bar differ from that in the first embodiment second embodiment. Because of this, regarding of the other elements on the description of the second Reference embodiment.
  • the first embodiment it is a plate-like one Locking element 9 rotatably attached to the base frame 6. With at one end, the locking element 9 is sliding on the Bottom of the rotatable stage 4. The other end of the Locking element 9 is by a spring 12 which on Support frame 7 is attached, held such that the Locking element 9 constantly against the underside of the rotatable Level 4 presses. As shown in Fig. 1, an am Support frame 7 fixed stop 8 arranged. In this illustration, the feet 2 are lifted off Condition shown. When feet 2 are off the floor the locking element 9 with a locking surface on Locking stop 8 on. The locking element 9 is thereby the spring 12 held in this position.
  • FIG. 2 The front view shown in FIG. 2 is good too recognize that the pedal lever 10 is essentially on the extends the entire width of the frame and from a U-shaped Pipe exists in this embodiment the opposite front swivel arms 5 on his Legs are welded.
  • the rotatable bearings of the swivel arms 5 very well recognizable. That is, the rotatable bearings on the base frame 6 and Support frame 7.
  • the podium leader has four Feet 2 on one at the four corners Square steel pipes welded to the existing base frame 6 are.
  • On the base frame 6 is a pedestal 21 with several Levels 22 firmly attached.
  • a railing 23 also extends below the base frame 6 a support frame 7 can be pivoted by means of swivel arms 5 appropriate.
  • the support frame 7 consists of Square tubes, which in plan view essentially one form a rectangular frame. Rollers 3 are on the support frame 7 attached freely rotatable.
  • the swivel arms 5 consist of elongated plates on either side of the tubes of the Base frame 6 as well as the base frame 7 at pivot points are stored.
  • the support frame 7 On the support frame 7 is in the vicinity of the lowest level Bearing bracket 18 welded to the rotatable locking element 19 is attached.
  • the locking element 19 with his one end rotatably attached to the bracket 18.
  • the other The end of the locking element 19 is sliding on the underside the lowest level 4, which rotates on one end Base frame 6 is arranged.
  • Kickbar 17 On the front view the front of the support frame 7 extends Kickbar 17, which in turn is rotatably attached to the support frame 7 is.
  • the kick bar 17 is bent essentially in a U-shape, with its two legs in the direction of the base frame 6 are bent and their free ends with rollers 20 are provided on the underside of the base frame 6 unroll.
  • the platform ladder 1 is freely movable in all directions.
  • a bearing block 18 is on Base frame 6 attached, at the lower end Locking element 19 is rotatably attached.
  • the locking element 19 has a first locking surface 22 and a second locking surface 23, which are formed by folds.
  • In off-the-shelf Position of the feet 2 is the front cross tube of the Support frame 7 on the first locking surface 22 of the Locking element 19 on.
  • This is a spring 12 Locking element 19 against the underside of the rotatable stage 4 pressed. In this position, level 4 is a small one Angle of about 2 to 5 ° twisted upwards.
  • a step bracket 17 is rotatably attached to the support frame 7 and has casters 20 on its opposite Legs that roll on the base frame 6.
  • the kick bar 17 occupies a lower position here.
  • the locking element 19 is down pushed away, whereby the cross tube of the support frame 7 from releases the first latching surface and into the second latching surface 23, that is above is pressed.
  • This in turn will achieved that already by the slightly pivoted storage of the support frame 7 compared to the base frame 6 Weight of the ladder the support frame 7 automatically pivots when the locking element 19 is released. Thereby the feet 2 come to a standstill on the floor.
  • This Position is shown in Fig. 7.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ladders (AREA)
  • Movable Scaffolding (AREA)
  • Tents Or Canopies (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)

Abstract

The feet (2) on which the frame stands can be raised and lowered in relation to the wheels (3) using a control mechanism (9). At least one step (4) - in the case of several steps, the lowest - is movably mounted. A lifting element (10) lifts off from the ground when weight is applied to the feet. Simultaneously, the step movable by the control mechanism is retracted into the first position. A support frame (7) swivelling with the wheels is swivel mounted on the base frame (6). The control comprises a locking mechanism pivot mounted on the base frame and sliding along the underside of the rotary step at one end. The other end is pressed by a spring (12) on the support frame against the inside of the rotary step.

Description

Die Erfindung betrifft ein verfahrbares Gestell mit einer Anzahl von Rollen, mit denen das Gestell frei verschiebbar ist, einem oder mehreren Standfüßen, die gegenüber den Rollen anhebbar und absenkbar sind, so daß im abgesenkten Zustand das Gestell einen sicheren Stand auf dem Boden hat.Das Gestell weist auch eine oder mehrere Stufen auf, wovon zumindest eine bewegbar gelagert ist, um bei Belastung über einen Betätigungsmechanismus die Standfüße abzusenken. Des weiteren betrifft die Erfindung eine Gerüst- bzw. Podestleiter.The invention relates to a movable frame with a Number of rollers with which the frame can be moved freely is, one or more feet, opposite the roles can be raised and lowered, so that in the lowered state the frame stands securely on the floor Frame also has one or more steps, of which at least one is movably mounted to over load an operating mechanism to lower the feet. Of the invention further relates to a scaffolding or Podium leader.

Gerüst- bzw. Podestleitern, die ein derartiges Gestell umfassen, das zum einen auf Rollen verfahren werden kann und das bei Benutzung auf Standfüßen ruht, sind in unterschiedlichster Bauweise bekannt.Scaffolding or platform ladders that have such a frame include, which can be moved on wheels on the one hand and that rests on feet when in use are in different designs known.

Zum einen ist es bekannt, Podestleitern mit einem Gestell, an dem Rollen angebracht sind, zu versehen, wobei zwischen den Rollen und dem Gestell Federn eingebaut sind, so daß bei Belastung der Leiter die Federn zusammengedrückt werden und die Leiter auf den entsprechenden Standfüßen auf dem Boden aufsitzt. Wird die Leiter entlastet, so drücken die Federn die gesamte Leiter und das Gestell nach oben, wodurch die Leiter auf den Rollen in allen Richtungen frei verfahrbar ist. Bei dieser Art von Podestleitern besteht das Problem, daß bei zu geringer Belastung der Leiter kein sicherer Stand auf den Standfüßen gewährleistet ist. Des weiteren kann bei zum Beispiel Verbleiben schwerer Werkzeugkisten auf der Leiter diese eventuell nicht in eine verfahrbare Position durch die entsprechenden Federn nach oben gedrückt wird.For one, it is known to have platform ladders with a frame the rollers are attached, provided between the Rollers and the frame springs are installed, so that at Load the ladder the springs are compressed and the ladder on the corresponding feet on the floor sits on. When the ladder is relieved, the springs press the entire ladder and the rack up, making the Ladder on the rollers freely movable in all directions is. The problem with this type of platform ladder is that the ladder is not stable if the load is too low on the feet is guaranteed. Furthermore, at for example remaining heavy tool boxes on the May not lead them into a movable position is pushed up by the appropriate springs.

Zum anderen ist eine Podestleiter bekannt, brei der über eine Hubvorrichtung eines von Hand zu betätigenden Hebels Rollen derart gegenüber den Standfüßen der Leiter anhebbar bzw. absenkbar sind, daß die Leiter auf den Rollen verschiebbar ist. Durch entgegengesetzte Bewegung des Hebels werden die Standfüße gegenüber den Rollen herabgelassen, so daß die Leiter auf den Standfüßen ruht. Bei Stellung des Hebels, bei der die Podestleiter auf den Rollen verschiebbar ist, ist vorgesehen, daß eine unterste Stufe steil nach oben hochgeklappt wird, damit ein Aufstieg nur bei sicherem Stand der Leiter erfolgt. Bei dieser Art von Leitern besteht jedoch das Problem, daß auch bei Nichtbetätigen des Hebels möglicherweise eine zweite Stufe und somit auf die Leiter aufgestiegen werden kann, was eine Sicherheitsgefährdung darstellt, da die Leiter weiterhin auf den Rollen verschiebbar ruht.On the other hand, a platform ladder is known, spread over one Lifting device of a manually operated lever rolls can be lifted in relation to the feet of the ladder or can be lowered so that the ladder can be moved on the rollers is. By moving the lever in the opposite direction Lowered feet opposite the rollers so that the Ladder resting on the feet. When the lever is in position which the platform ladder can be moved on the rollers provided that a bottom step is steeply up is folded up so that an ascent is only possible when standing safely the leader is done. However, this type of ladder exists the problem that even when the lever is not operated possibly a second step and thus on the ladder can be climbed, which is a security hazard represents because the ladder continues on the roles slidably rests.

Stand der TechnikState of the art

Aus der US-A-2 708 652 ist ein verfahrbares Gestell bzw. eine Leiter bekannt, die eine Anzahl Rollen aufweist, mit denen das Gestell bzw. die Leiter frei verschiebbar ist. Des weiteren sind zwei vordere Standfüße vorhanden, die gegenüber den hierzu zugeordneten Rollen anheb- und absenkbar sind. In abgesenktem Zustand ruht das aus dieser Druckschrift bekannte Gestell auf den zwei vorderen Standfüßen. Des weiteren weist die die bekannte Leiter mehrere Stufen auf, wovon eine Stufe bewegbar gelagert ist. Bei Belastung der bewegbaren Stufe werden über einen Betätigungsmechanismus die Standfüße abgesenkt. Schließlich ist ein Anhebeelement in Form eines Pedals bekannt, das bei Belastung die Standfüße vom Boden abhebt, wodurch gleichzeitig die bewegliche Stufe in die ursprüngliche Lageposition zurückgeführt wird.From US-A-2 708 652 is a movable frame or one Head known that has a number of roles with which the frame or the ladder can be moved freely. Of there are also two front feet opposite the roles assigned to this can be raised and lowered. In lowered state rests that known from this document Frame on the two front feet. Furthermore points the well-known ladder up several levels, one of which level is movably mounted. When the movable stage is loaded the feet are actuated lowered. Finally, a lifting element is in the form of a Pedals known that the feet from the floor when loaded takes off, which simultaneously moves the movable step into the original position is returned.

In der US-A-3 155 190 ist ein verfahrbares Gestell offenbart, die eine bewegliche Stufe aufweist. Darüber hinaus ist ein Bügel vorgesehen, mit den anheb- und absenkbare Standfüße vom Boden abgehoben werden können.US-A-3 155 190 discloses a movable frame, which has a movable step. In addition, is a Bracket provided with the lifting and lowering feet from Floor can be lifted off.

Schließlich ist aus der US-A-3 291 254 ein verfahrbares Gestell gezeigt, bei dem vordere Rollen über eine bewegbare Stufe gegenüber im Bereich dieser Rollen angeordneten Standfüßen anheb- bzw. absenkbar angeordnet sind.Finally, US-A-3,291,254 is a movable one Frame shown in the front casters via a movable Level opposite arranged in the area of these roles The feet can be raised or lowered.

Bei all diesen bekannten Gestellen bzw. Leitern sind die hinteren Rollen fest mit einer Rahmenkonstruktion des Gestells verbunden. Diese hinteren Rollen werden nicht vom Boden abgehoben oder entlastet, so daß trotz der vorhandenen Absenkeinrichtung ein erhöhtes Risiko besteht, daß die bekannten Leitern auf dem Boden wegrutschen, wenn eine Person mit größerer Geschwindigkeit auf die Leiter auftritt.In all of these known racks or ladders are the rear rollers firmly with a frame construction of the Connected to the frame. These rear roles are not from Soil lifted or relieved, so that despite the existing Lowering device there is an increased risk that the known ladders slip on the floor when a person occurs at greater speed on the ladder.

Das der Erfindung zugrundliegende technische Problem besteht darin, ein Gestell zu schaffen, das bereits beim Besteigen des Gestells eine noch bessere Standfestigkeit gewährleistet.The technical problem underlying the invention exists in creating a frame that is already climbing the frame an even better stability guaranteed.

Dieses technische Problem wird bei einem Gestell mit den Merkmalen des Patentanspruchs 1 gelöst. Des weiteren wird eine sichere verschiebbare Gerüst- bzw. Podestleiter, die ein entsprechendes Gestell umfaßt, bereitgestellt.This technical problem is solved with a frame with the Features of claim 1 solved. Furthermore, a secure sliding scaffold or platform ladder that a corresponding frame includes provided.

Der Erfindung liegt der Gedanke zugrunde, daß bereits durch Besteigen der Leiter automatisch das Gestell bzw. die Leiter von der Verfahrposition in die sichere Standposition auf den Standfüßen gebracht wird.The invention is based on the idea that through The ladder automatically ascends the frame or the ladder from the traversing position to the safe standing position on the Feet is brought.

Durch eine drehbare oder verschiebbare Stufe wird erreicht, daß durch Aufsteigen auf diese Stufe durch den Betätigungsmechanismus die Stufe von einer ersten in eine zweite Lageposition gedreht oder verschoben wird, wodurch über einen Betätigungsmechanismus der oder die Standfüße abgesenkt werden und somit das Gestell sicher auf den Standfüßen ruht. Mittels des Anhebeelements kann durch Trittbelastung erreicht werden, daß die Standfüße vom Boden abheben, wobei gleichzeitig über den Betätigungsmechanismus die drehbare Stufe in die erste Lageposition zurückgedreht wird. Damit wird gewährleistet, daß die drehbare Stufe in verfahrbarem Zustand des Gestells immer in leicht gedrehter Lage zum Liegen kommt. Indem nun die erste Stufe beim Besteigen belastet wird, wird erfindungsgemäß automatisch die sichere Standfestigkeit auf den Standfüßen erzielt.Durch den am Grundrahmen schwenkbar angeordneten Tragrahmen mit der oder den Rollen wird bereits beim Besteigen des Gestells über den Betätigungsmechanismus ein schnelles Entlasten der Rollen und somit von Beginn an ein Wegrutschen des Gestells verhindert.A rotatable or slidable step ensures that by ascending to this level through the Actuation mechanism the level from a first to one second position is rotated or shifted, whereby via an actuating mechanism or the feet be lowered and thus the frame securely on the Feet rests. By means of the lifting element Stepping load achieved that the feet from the floor lift off, simultaneously using the actuating mechanism the rotatable step is turned back to the first position becomes. This ensures that the rotatable step in movable condition of the frame always in a slightly rotated Location comes to rest. By now the first stage at Climbing is loaded, the invention automatically secure stability is achieved on the feet on the base frame pivotally arranged support frame with the or the roles are already over when climbing the frame the actuating mechanism relieves the rollers quickly and thus the frame slides from the start prevented.

Vorteilhafterweise ist bei mehreren Stufen die unterste Stufe drehbar gelagert, da ein Benutzer normalerweise zum Besteigen des Gestells die unterste Stufe betritt. Es ist zur Erhöhung der Sicherheit jedoch auch möglich, mehrere der unteren Stufen drehbar zu lagern und miteinander zu koppeln, so daß auch bei Benutzung der zweiten oder sogar der dritten Stufe jeweils automatisch der Betätigungsmechanismus ein Absenken des Gestells auf die Standfüße möglich macht.In the case of several stages, the lowest stage is advantageous rotatably mounted since a user normally climbs of the rack enters the lowest level. It is to increase For security reasons, however, several of the lower ones are possible Steps to be rotatably supported and coupled so that even when using the second or even the third stage each automatically lowering the actuating mechanism of the frame on the feet.

Indem die drehbare Stufe an zwei sich gegenüberliegenden Punkten an einem Grundrahmen des Gestells gelagert ist und die Standfüße an diesem Grundrahmen angeordnet sind, wird in konstruktiv einfacher Art und Weise ein bei Benutzung sicheres Gestell bzw. eine sichere Gerüst- bzw. Podestleiter geschaffen. By placing the rotating step on two opposite ones Points is stored on a base frame of the frame and the feet are arranged on this base frame is in constructively simple manner when using secure frame or a safe scaffolding or platform ladder created.

Indem der Tragrahmen mittels Schwenkarmen schwenkbar am Grundrahmen angeordnet ist, wird eine sehr einfache und kostengünstige Konstruktion geschaffen.By pivoting the support frame by means of swivel arms Base frame is arranged is a very simple and inexpensive construction created.

Vorteilhafterweise sind die Schwenkarme am Grundrahmen und am Tragrahmen drehbar gelagert. Dabei sind die Drehpunkte am Tragrahmen versetzt zu den Drehpunkten am Grundrahmen angeordnet. Dadurch wird allein durch die Gewichtskraft der Leiter erreicht, daß durch leichtes Betätigen bzw. durch leichte Belastung der drehbaren Stufe, wodurch ein Anschlag verdreht wird, das Gestell auf den Standfüßen zum Stehen kommt. Dabei sind nur sehr geringe Kräfte zum Verdrehen der drehbaren Stufe notwendig, d.h. lediglich die Auslösekräfte zum Verschwenken des Betätigungsmechanismus.The swivel arms are advantageously on the base frame and on Support frame rotatably mounted. The pivot points are on Support frame offset to the pivot points on the base frame arranged. This is due to the weight of the Head achieved that by light actuation or by light load on the rotatable step, causing a stop is rotated, the frame on the feet to stand is coming. There are only very small forces to twist the rotatable stage necessary, i.e. only the trigger forces for pivoting the actuating mechanism.

Sehr vorteilhaft ist es, daß der Betägigungsmechanismus ein Arretierelement umfaßt, das am Grundrahmen drehbar gelagert ist und mit seinem einen Ende an der unteren Seite der drehbaren Stufe gleitend anliegt und mit seinem anderen Ende durch eine Feder, die am Tragrahmen angebracht ist, gegen die Innenseite der drehbaren Stufe gedrückt wird. Damit wird eine sehr einfache und gleichzeitig lediglich sehr geringe Kraft erfordernde Auslösung mit Drehung der drehbaren Stufe geschaffen. It is very advantageous that the actuating mechanism Locking element comprises, which is rotatably mounted on the base frame and with one end on the lower side of the rotatable stage slidably and with its other end by a spring attached to the support frame against the Inside of the rotating stage is pressed. So that becomes a very simple and at the same time only very low power required triggering with rotation of the rotatable stage created.

Indem das Arretierelement einen Absatz aufweist, der an einem entsprechenden Ansatzstück am Tragrahmen anliegt, wenn die Standfüße angehoben sind, ist lediglich ein sehr geringer Winkel zwischen der ersten und zweiten Lageposition der drehbaren Stufe notwendig, um ein Arretierelement auszulösen, so daß die sichere Standposition eingenommen wird.By the locking element has a shoulder on a appropriate fitting on the support frame when the The feet are raised is only a very small one Angle between the first and second position of the rotatable stage necessary to trigger a locking element, so that the safe standing position is taken.

Eine Ausbildung, bei der das Anhebeelement aus einem Tritthebel besteht, der mit den in der Nähe der drehbaren Stufe angeordneten Schwenkarmen verbunden ist und in der Draufsicht gegenüber der drehbaren Stufe vorkragt, ist sehr vorteilhaft, da lediglich mit einer geringen Trittbelastung dieses Tritthebels das Gestell von der Standposition in die verfahrbare Position verschwenkt wird.An apprenticeship in which the lifting element consists of a Pedal lever is there with the near the rotatable Level arranged swivel arms is connected and in the Cantilevered top view opposite the rotatable step is very advantageous because only with a small tread load this pedal the frame from the standing position into the movable position is pivoted.

Eine sehr einfache konstruktive Lösung besteht darin, daß der Tritthebel aus einem U-förmigen Rohr besteht, das mit seinen Schenkeln an den zugehörigen Schwenkarmen verschweißt ist.A very simple constructive solution is that the Pedal lever consists of a U-shaped tube, which with its Legs are welded to the associated swivel arms.

Eine Gerüst- bzw. Podestleiter mit einem erfindungsgemäßen Gestell, wie oben beschrieben, weist eine sehr große Sicherheit bei der Benutzung auf. A scaffolding or platform ladder with an inventive Frame, as described above, has a very large Safety when using.

Im folgenden werden zum besseren Verständnis und zur weiteren Erläuterung zwei Ausführungsbeispiele eines erfindungsgemäßen verfahrbaren Gestells an einer Podestleiter näher beschrieben und erläutert. Es zeigt:

Fig. 1
eine Querschnittsansicht nach der Linie II-II in Fig. 3 gemäß einem ersten Ausführungsbeispiel der Erfindung;
Fig. 2
eine Vorderansicht eines erfindungsgemäßen verfahrbaren Gestells gemäß dem ersten Ausführungsbeispiel;
Fig. 3
eine Querschnittsansicht gemäß Fig. 1, bei der die Standfüße abgesenkt sind,
Fig. 4
eine Seitenansicht einer erfindungsgemäßen Podestleiter gemäß einem zweiten Ausführungsbeispiel der Erfindung;
Fig. 5
eine Querschnittsansicht nach der Linie V-V in Fig. 6 des zweiten Ausführungsbeispiels,
Fig. 6
eine Vorderansicht des zweiten Ausführungsbeispiels des erfindungsgemäßen Gestells; und
Fig. 7
eine Querschnittsansicht nach Fig. 5, bei der jedoch die Standfüße in abgesenktem Zustand dargestellt sind.
For better understanding and for further explanation, two exemplary embodiments of a movable frame according to the invention on a platform ladder are described and explained in more detail below. It shows:
Fig. 1
a cross-sectional view along the line II-II in Figure 3 according to a first embodiment of the invention.
Fig. 2
a front view of a movable frame according to the invention according to the first embodiment;
Fig. 3
1, in which the feet are lowered,
Fig. 4
a side view of a platform ladder according to the invention according to a second embodiment of the invention;
Fig. 5
6 shows a cross-sectional view along the line VV in FIG. 6 of the second exemplary embodiment,
Fig. 6
a front view of the second embodiment of the frame according to the invention; and
Fig. 7
a cross-sectional view of FIG. 5, but in which the feet are shown in the lowered state.

In den Fig. 1 bis 3 ist ein erstes Ausführungsbeispiel eines erfindungsgemäßen Gestells gezeigt. Das erste Ausführungsbeispiel entspricht im wesentlichen dem in den Fig. 4 bis 7 gezeigten zweiten Ausführungsbeispiel. Lediglich die Arretierelemente, die mit der drehbaren Stufe 4 und dem Tragrahmen 7 in Verbindung stehen, und der Trittbügel unterscheiden sich bei dem ersten Ausführungsbeispiel von dem zweiten Ausführungsbeispiel. Aufgrunddessen wird bezüglich der weiteren Elemente auf die Beschreibung des zweiten Ausführungsbeispiels verwiesen.1 to 3 is a first embodiment of a shown inventive frame. The first Embodiment corresponds essentially to that in the 4 to 7 shown second embodiment. Only the locking elements with the rotatable stage 4 and Support frame 7 are connected, and the kick bar differ from that in the first embodiment second embodiment. Because of this, regarding of the other elements on the description of the second Reference embodiment.

Bei dem ersten Ausführungsbeispiel ist ein plattenförmiges Arretierelement 9 drehbar am Grundrahmen 6 angebracht. Mit seinem einen Ende liegt das Arretierelement 9 gleitend an der Unterseite der drehbaren Stufe 4 an. Das andere Ende des Arretierelements 9 wird durch eine Feder 12, die am Tragrahmen 7 angebracht ist, derart gehalten, daß das Arretierelement 9 ständig gegen die Unterseite der drehbaren Stufe 4 drückt. Wie in der Fig. 1 gezeigt, ist ein am Tragrahmen 7 fest angebrachter Arretieranschlag 8 angeordnet. In dieser Darstellung sind die Standfüße 2 im abgehobenen Zustand gezeigt. Bei abgehobenen Standfüßen 2 vom Boden liegt das Arretierelement 9 mit einer Rastfläche am Arretieranschlag 8 an. Dabei wird das Arretierelement 9 durch die Feder 12 in dieser Stellung gehalten. Durch die bezüglich einer Vertikalen leicht gedrehten bzw. versetzten Lage der Schwenkarme 5 wird durch die Gewichtskraft der Leiter der Tragrahmen 7 mit dem Arretieranschlag 8 gegen die Rastfläche des Arretierelements 9 gedrückt. In dieser Lage steht die drehbare Stufe 4 leicht nach oben und ein Tritthebel 10, der an den vorderen sich gegenüberliegenden Schwenkarmen 5 fest verschweißt ist, nimmt eine untere Stellung ein.In the first embodiment, it is a plate-like one Locking element 9 rotatably attached to the base frame 6. With at one end, the locking element 9 is sliding on the Bottom of the rotatable stage 4. The other end of the Locking element 9 is by a spring 12 which on Support frame 7 is attached, held such that the Locking element 9 constantly against the underside of the rotatable Level 4 presses. As shown in Fig. 1, an am Support frame 7 fixed stop 8 arranged. In this illustration, the feet 2 are lifted off Condition shown. When feet 2 are off the floor the locking element 9 with a locking surface on Locking stop 8 on. The locking element 9 is thereby the spring 12 held in this position. Because of the a vertical slightly rotated or offset position of the Swivel arms 5 is the weight of the head of the Support frame 7 with the locking stop 8 against the locking surface of the locking element 9 pressed. This is the situation rotatable stage 4 slightly upwards and a pedal lever 10, the fixed to the front opposite swivel arms 5 is welded, assumes a lower position.

Wenn nun eine leichte Trittbelastung auf die unterste Stufe 4 erfolgt, wird das Arretierelement 9 um seine Drehachse etwas gedreht, wobei lediglich die Federkraft der Feder 12 zu überwinden ist. Durch die Drehung der drehbaren Stufe 4 wird das Arretierelement 9 entgegengesetzt verdreht zur Stufe gedreht, wodurch der Arretieranschlag 8 von der Rastfläche des Arretierelements 9 sich löst und durch die Gewichtskraft der Leiter das Gestell mit dem Tragrahmen 7 in der in Fig. 2 gezeigten Darstellung nach links sich verschwenkt. Dadurch kommen die Standfüße 2 auf dem Boden zum Stehen. Somit wird ein sicherer Stand des Gestells auf den Standfüßen 2 erreicht. Diese Endstellung mit den aufliegenden Standfüßen 2 auf dem Boden ist in der Fig. 3 dargestellt. Wie in dieser Figur gezeigt, wird durch die Absenkung der Standfüße 2 der Tritthebel 10 in eine obere Stellung verschwenkt. Durch einfache Trittbelastung des Tritthebels 10 nach unten wird erreicht, daß der Grundrahmen 6 gegenüber dem Tragrahmen 7 angehoben wird und die Rastfläche des Arretierelements 9 an dem Arretieranschlag 8 einrastet. Hierdurch wird wiederum die in der Fig. 1 dargestellte Lage eingenommen. In dieser Stellung ist die Leiter auf den drehbaren Rollen 3, die auf Rollenträgern 14 frei drehbar am Tragrahmen 7 befestigt sind, verschiebbar.If there is a slight tread load on the lowest level 4 takes place, the locking element 9 is somewhat about its axis of rotation rotated, with only the spring force of the spring 12 to is overcome. By rotating the rotatable stage 4 the locking element 9 rotated in the opposite direction to the step rotated, whereby the locking stop 8 from the locking surface of the locking element 9 is released and by the weight the head of the frame with the support frame 7 in the in Fig. 2nd shown representation pivots to the left. Thereby the feet 2 come to a standstill on the floor. Thus a secure stand of the frame on the feet 2 reached. This end position with the feet 2 on the floor is shown in FIG. 3. Like this one Figure shown is by lowering the feet 2 of the Pedal lever 10 pivoted into an upper position. By simple pedal load of the pedal lever 10 is down achieved that the base frame 6 relative to the support frame 7th is raised and the locking surface of the locking element 9 the stop 8 engages. This in turn will Assumed position shown in FIG. 1. In this Position is the ladder on the rotatable rollers 3 that are on Roller carriers 14 are freely rotatably attached to the support frame 7, slidable.

Bei der in Fig. 2 gezeigten Vorderansicht ist gut zu erkennen, daß der Tritthebel 10 sich im wesentlichen über die gesamte Breite des Gestells erstreckt und aus einem U-förmigen Rohr besteht, das bei diesem Ausführungsbeispiel an den sich gegenüberliegenden vorderen Schwenkarmen 5 an seinen Schenkeln verschweißt ist. Bei dieser Darstellung sind die drehbaren Lagerungen der Schwenkarme 5 sehr gut erkennbar. Das heißt, die drehbaren Lagerungen am Grundrahmen 6 und am Tragrahmen 7. The front view shown in FIG. 2 is good too recognize that the pedal lever 10 is essentially on the extends the entire width of the frame and from a U-shaped Pipe exists in this embodiment the opposite front swivel arms 5 on his Legs are welded. In this representation, the rotatable bearings of the swivel arms 5 very well recognizable. That is, the rotatable bearings on the base frame 6 and Support frame 7.

Eine detaillierte Darstellung des zweiten Ausführungsbeispiels wird nunmehr unter Bezugnahme auf die Fig. 4 bis 7 erläutert.A detailed description of the second Embodiment will now refer to 4 to 7 explained.

In der Fig. 4 ist eine verfahrbare Podestleiter 1 gezeigt, die ein erfindungsgemäßes Gestell gemäß dem zweiten Ausführungsbeispiel zeigt. Die Podestleiter weist vier Standfüsse 2 auf, die an den vier Ecken eines aus Vierkantstahlrohren bestehenden Grundrahmens 6 angeschweißt sind. Auf dem Grundrahmen 6 ist ein Podest 21 mit mehreren Stufen 22 fest angebracht. Auf beiden Seiten der Stufen 22 erstreckt sich zudem ein Geländer 23. Unter dem Grundrahmen 6 ist mittels Schwenkarmen 5 ein Tragrahmen 7 schwenkbar angebracht. Der Tragrahmen 7 besteht hierbei aus Vierkantrohren, die in der Draufsicht einen im wesentlichen rechteckigen Rahmen bilden. An dem Tragrahmen 7 sind Rollen 3 frei drehbar angebracht. Die Schwenkarme 5 bestehen aus länglichen Platten, die auf beiden Seiten der Rohre des Grundrahmens 6 wie auch des Grundrahmens 7 an Drehpunkten gelagert sind.4 shows a movable platform ladder 1, which an inventive frame according to the second Embodiment shows. The podium leader has four Feet 2 on one at the four corners Square steel pipes welded to the existing base frame 6 are. On the base frame 6 is a pedestal 21 with several Levels 22 firmly attached. On both sides of steps 22 A railing 23 also extends below the base frame 6 a support frame 7 can be pivoted by means of swivel arms 5 appropriate. The support frame 7 consists of Square tubes, which in plan view essentially one form a rectangular frame. Rollers 3 are on the support frame 7 attached freely rotatable. The swivel arms 5 consist of elongated plates on either side of the tubes of the Base frame 6 as well as the base frame 7 at pivot points are stored.

An dem Tragrahmen 7 ist in der Nähe der untersten Stufe ein Lagerbock 18 angeschweißt, an dem drehbar ein Arretierelement 19 befestigt ist. Dabei ist das Arretierelement 19 mit seinem einen Ende an dem Lagerbock 18 drehbar befestigt. Das andere Ende des Arretierelements 19 liegt gleitend an der Unterseite der untersten Stufe 4 an, die mit einem Ende drehbar am Grundrahmen 6 angeordnet ist. Auf der in der Vorderansicht der Vorderseite des Tragrahmens 7 erstreckt sich ein Trittbügel 17, der am Tragrahmen 7 wiederum drehbar befestigt ist. Der Trittbügel 17 ist im wesentlichen U-förmig gebogen, wobei seine zwei Schenkel in Richtung des Grundrahmens 6 umgebogen sind und deren freie Enden mit Gleitrollen 20 versehen sind, die auf der Unterseite des Grundrahmens 6 abrollen.On the support frame 7 is in the vicinity of the lowest level Bearing bracket 18 welded to the rotatable locking element 19 is attached. The locking element 19 with his one end rotatably attached to the bracket 18. The other The end of the locking element 19 is sliding on the underside the lowest level 4, which rotates on one end Base frame 6 is arranged. On the front view the front of the support frame 7 extends Kickbar 17, which in turn is rotatably attached to the support frame 7 is. The kick bar 17 is bent essentially in a U-shape, with its two legs in the direction of the base frame 6 are bent and their free ends with rollers 20 are provided on the underside of the base frame 6 unroll.

Bei dem in Fig. 4 gezeigten zweiten Ausführungsbeispiel sind die Standfüße 2 in vom Boden abgehobenem Zustand dargestellt und die drehbare Stufe 4 ist um einen Winkel gegenüber einer Horizontalebene verdreht, wobei der Tragrahmen 7 auf einer ersten Rastfläche 22 des Arretierelements 19 anliegt. In dieser Stellung des Tragrahmens 7 gegenüber dem Grundrahmen 6 ist die Podestleiter 1 in allen Richtungen frei verschiebbar.4 are in the second embodiment the feet 2 shown in the raised state from the floor and the rotatable step 4 is at an angle to one Twisted horizontal plane, the support frame 7 on a first latching surface 22 of the locking element 19 abuts. In this position of the support frame 7 relative to the base frame 6 the platform ladder 1 is freely movable in all directions.

Bei diesem Ausführungsbeispiel ist ein Lagerbock 18 am Grundrahmen 6 angebracht, an dessen unterem Ende ein Arretierelement 19 drehbar befestigt ist. Das Arretierelement 19 weist eine erste Rastfläche 22 und eine zweite Rastfläche 23 auf, die durch Abkantungen geformt sind. In abgehobener Stellung der Standfüße 2 liegt ds vordere Querrohr des Tragrahmens 7 an der ersten Rastfläche 22 des Arretierelements 19 an. Dabei wird über eine Feder 12 das Arretierelement 19 gegen die Unterseite der drehbaren Stufe 4 gedrückt. In dieser Stellung ist die Stufe 4 um einen kleinen Winkel von etwa 2 bis 5° nach oben verdreht.In this embodiment, a bearing block 18 is on Base frame 6 attached, at the lower end Locking element 19 is rotatably attached. The locking element 19 has a first locking surface 22 and a second locking surface 23, which are formed by folds. In off-the-shelf Position of the feet 2 is the front cross tube of the Support frame 7 on the first locking surface 22 of the Locking element 19 on. This is a spring 12 Locking element 19 against the underside of the rotatable stage 4 pressed. In this position, level 4 is a small one Angle of about 2 to 5 ° twisted upwards.

Ein Trittbügel 17 ist drehbar am Tragrahmen 7 befestigt und weist Gleitrollen 20 an seinen sich gegenüberliegenden Schenkeln auf, die am Grundrahmen 6 abrollen. Der Trittbügel 17 nimmt hier eine untere Stellung ein. Durch geringfügige Belastung der Stufe 4 wird das Arretierelement 19 nach unten weggedrückt, wodurch das Querrohr des Tragrahmens 7 sich von der ersten Rastfläche löst und in die zweite Rastfläche 23, die darüberliegt, gedrückt wird. Dies wird wiederum dadurch erreicht, daß bereits durch die leicht verschwenkte Lagerung des Tragrahmens 7 gegenüber dem Grundrahmen 6 die Gewichtskraft der Leiter den Tragrahmen 7 automatisch verschwenkt, wenn das Arretierelement 19 gelöst wird. Dadurch kommen die Standfüße 2 auf dem Boden zum Stehen. Diese Stellung ist in der Fig. 7 gezeigt. Durch die Verschwenkung des Tragrahmens 7 gegenüber dem Grundrahmen 6 wird der Trittbügel 17 in eine obere Stellung gedreht, wobei er immer noch mit seinen Schenkeln über die Gleitrollen 20 an der Unterseite des Grundrahmens 6 anliegt. Durch Trittbelastung des Trittbügels 17 nach unten wird der Grundrahmen 6 gegenüber dem Tragrahmen 7 angehoben und das Querrohr des Tragrahmens 7 wird wieder von der zweiten Rastfläche 23 in die erste Rastfläche 22 gedrückt, wobei die Stufe 4 automatisch wieder gegenüber der Horizontalebene leicht verdreht wird. In dieser Stellung kann das Gestell bzw. die Leiter leicht in alle Richtungen verfahren werden. Bei der in Fig. 6 dargestellten Vorderansicht mit angehobenen Standfüßen 2 ist nochmals sehr gut die Form des Trittbügels 17 zu erkennen, der an Tragrahmen 7 drehbar angebracht ist und mit Gleitrollen 20 auf der Unterseite des Grundrahmens 6 gleitet.A step bracket 17 is rotatably attached to the support frame 7 and has casters 20 on its opposite Legs that roll on the base frame 6. The kick bar 17 occupies a lower position here. By minor Load of level 4, the locking element 19 is down pushed away, whereby the cross tube of the support frame 7 from releases the first latching surface and into the second latching surface 23, that is above is pressed. This in turn will achieved that already by the slightly pivoted storage of the support frame 7 compared to the base frame 6 Weight of the ladder the support frame 7 automatically pivots when the locking element 19 is released. Thereby the feet 2 come to a standstill on the floor. This Position is shown in Fig. 7. By pivoting of the support frame 7 relative to the base frame 6 Kickbar 17 rotated to an upper position, being always still with his legs on the rollers 20 on the Bottom of the base frame 6 is applied. By treading the footrest 17 down the base frame 6th raised against the support frame 7 and the cross tube of the Support frame 7 is again from the second locking surface 23 in the first latching surface 22 is pressed, the stage 4 automatically again slightly compared to the horizontal plane is twisted. In this position, the frame or Ladder can be moved easily in all directions. At the in Fig. 6 shown front view with raised feet 2 is again very good the shape of the kick bar 17 recognize that is rotatably attached to support frame 7 and with Slide rollers 20 slides on the underside of the base frame 6.

Claims (22)

  1. Movable stand with
    a number of rollers (3) with which the stand is freely displaceable,
    one or more legs (2) which can be raised and lowered relative to the rollers (3), so that in the lowered state the stand stands firmly on the floor,
    one or more steps (4), wherein at least one step (4) is mounted movably, can occupy first and second positions and under load can be changed from the first to the second position, as a result of which the leg or legs (2) are lowered by an actuating mechanism (9, 19),
    a lifting element (10) which lifts the legs (2) off the floor when there is a load, as a result of which at the same time the movable step (4) is returned to the first position by the actuating mechanism (9, 19), and
    a supporting frame (7) which with the rollers (3) is arranged pivotably on the main frame.
  2. Stand according to claim 1, characterised in that in case of a plurality of steps the lowermost step (4) is mounted movably.
  3. Stand according to claim 1 or 2, characterised in that the step (4) is rotatable and mounted at two mutually opposed points on a main frame (6) of the stand, and the legs (2) are arranged on this main frame (6).
  4. Stand according to claim 1, characterised in that the supporting frame (7) is arranged pivotably on the main frame (6) by means of swinging arms (5).
  5. Stand according to claim 4, characterised in that the swinging arms (5) are mounted rotatably on the main frame (6) and on the supporting frame (7), and the pivot points on the supporting frame (7) are offset from the pivot points on the main frame (6).
  6. Stand according to claim 1, characterised in that the actuating mechanism includes a locking element (9) which is mounted rotatably on the main frame (6) and with one end abuts slidingly against the lower side of the rotatable step (4) and with its other end is biased towards the inner side of the rotatable step (4) by a spring (12) which is mounted on the supporting frame (7).
  7. Stand according to claim 6, characterised in that the locking element (9) comprises a shoulder which abuts against a corresponding attachment piece (8) on the supporting frame (7) when the legs (2) are raised.
  8. Stand according to claim 1, characterised in that the lifting element consists of a pedal lever (10) which is connected to the swinging arms (5) arranged in the vicinity of the rotatable step (4) and protrudes from the rotatable step (4) in plan view.
  9. Stand according to claim 8, characterised in that the pedal lever (10) consists of a U-shaped tube which is welded by its arms to the associated swinging arms (5).
  10. Stand according to claim 1, characterised in that the first position of the rotatable step (4) is defined by the fact that a plane parallel to the bearing surface of the step is rotated through a predetermined angle relative to a horizontal plane.
  11. Stand according to claim 1, characterised in that the second position of the rotatable step (4) is defined by the fact that a plane parallel to the bearing surface of the rotatable step is horizontally oriented.
  12. Stand according to claim 1, characterised in that on occupying the first position of the rotatable step (4) the lifting element (10) occupies a lower position, and on occupying the second position of the rotatable step (4) the lifting element (10) occupies an upper position.
  13. Stand according to any of the preceding claims, characterised in that the angle between the first and second positions of the rotatable step (4) is 1° to 20°.
  14. Stand according to claim 1, characterised in that the angle between the first and second positions of the rotatable step (4) is between 1° and 5°.
  15. Stand according to any of the preceding claims, characterised in that in the first position of the rotatable step (4) the swinging arms (5) are inclined at an angle from 5° to 20° from the vertical.
  16. Stand according to claim 1 or 6, characterised in that the actuating mechanism is arranged in the middle of the rotatable step (4).
  17. Stand according to claim 1, characterised in that a pedal frame (17) is mounted rotatably on the supporting frame (7) and slides with slide rollers on the lower side of the main frame (6).
  18. Stand according to claim 17, characterised in that the pedal frame (17) consists of a U-shaped tube whose ends are bent upwards and slides along the main frame (6).
  19. Stand according to claim 1 or 3, characterised in that a bearing block (18) is attached to the main frame (6) and a locking element (19) mounted rotatably thereon is kept biased by a spring (12) towards the rotatable step (4), wherein the locking element (19) consists of a multi-bent plate which with its upper end abuts slidingly against the lower side of the rotatable step (4).
  20. Stand according to claim 19, characterised in that the supporting frame (7) in the first position of the rotatable step (4) abuts against a lower contact surface of the locking element (19) and in the second position lies in a second contact surface of the locking element (19) arranged thereabove.
  21. Stand according to claim 1 or 2, characterised in that the movable step (4) is displaceable from a first into a second position.
  22. Scaffold ladder or stepladder with a number of steps arranged one above the other and an upper platform, including a movable stand according to any of claims 1 to 21.
EP96101988A 1995-02-15 1996-02-12 Mobile frame and ladder for scaffolding respectively for working platform Expired - Lifetime EP0727559B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19505066A DE19505066C1 (en) 1995-02-15 1995-02-15 Movable frame, especially scaffolding or platform ladder
DE19505066 1995-02-15

Publications (2)

Publication Number Publication Date
EP0727559A1 EP0727559A1 (en) 1996-08-21
EP0727559B1 true EP0727559B1 (en) 1999-07-14

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EP (1) EP0727559B1 (en)
AT (1) ATE182198T1 (en)
DE (2) DE19505066C1 (en)

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CN103967405A (en) * 2014-04-24 2014-08-06 上海东富龙拓溥科技有限公司 Movable escalator supporting mechanism
CN105201395A (en) * 2015-10-19 2015-12-30 苏州天沃科技股份有限公司 Mobile climbing ladder facilitating fixed positioning

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DE10326514A1 (en) * 2003-06-10 2005-01-05 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Run-knitting machine with a working platform and kit for their production
FR3001757B1 (en) * 2013-02-04 2015-12-18 Fimm SAFELY ROLLING STACK COMPRISING A STRUCTURE BASED ON A CART EQUIPPED WITH CASTORS
DK2992150T3 (en) * 2013-05-02 2018-08-06 Pluseight Tech Ab Platform unit for use with a scaffolding structure
UY4591U (en) * 2015-06-10 2016-12-30 Grupo Bimbo Sab De Cv MOVING STAIRCASE
CN107299819B (en) * 2016-08-30 2018-11-30 绍兴柯桥富荣纺织有限公司 A kind of ladder
CN107060633A (en) * 2017-05-08 2017-08-18 浙江众磊园林工程有限公司 Gardens automation trimming ladder
CN108756715B (en) * 2018-06-04 2019-11-29 林梅仙 A kind of non-standard automatic double ladder
CN108868578B (en) * 2018-06-24 2020-04-14 周子行 Remote control advancing type herringbone ladder and automatic advancing method thereof
CN111894440A (en) * 2020-08-03 2020-11-06 武汉亿维登科技发展有限公司 Electric power overhauls support convenient to remove transport

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CN103967405A (en) * 2014-04-24 2014-08-06 上海东富龙拓溥科技有限公司 Movable escalator supporting mechanism
CN103967405B (en) * 2014-04-24 2015-09-30 上海东富龙拓溥科技有限公司 A kind of movable escalator movable support mechanism
CN105201395A (en) * 2015-10-19 2015-12-30 苏州天沃科技股份有限公司 Mobile climbing ladder facilitating fixed positioning

Also Published As

Publication number Publication date
EP0727559A1 (en) 1996-08-21
DE59602412D1 (en) 1999-08-19
ATE182198T1 (en) 1999-07-15
DE19505066C1 (en) 1996-08-22

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