EP0945390B1 - Mast of a construction hoist - Google Patents

Mast of a construction hoist Download PDF

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Publication number
EP0945390B1
EP0945390B1 EP99890080A EP99890080A EP0945390B1 EP 0945390 B1 EP0945390 B1 EP 0945390B1 EP 99890080 A EP99890080 A EP 99890080A EP 99890080 A EP99890080 A EP 99890080A EP 0945390 B1 EP0945390 B1 EP 0945390B1
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EP
European Patent Office
Prior art keywords
mast
sensor
pieces
platform
switching
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99890080A
Other languages
German (de)
French (fr)
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EP0945390A3 (en
EP0945390A2 (en
Inventor
Thomas Voitleitner
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.)
ABG Allgemeine Baumaschinen GmbH
Original Assignee
ABG Allgemeine Baumaschinen 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 ABG Allgemeine Baumaschinen GmbH filed Critical ABG Allgemeine Baumaschinen GmbH
Priority to AT99890080T priority Critical patent/ATE273234T1/en
Publication of EP0945390A2 publication Critical patent/EP0945390A2/en
Publication of EP0945390A3 publication Critical patent/EP0945390A3/en
Application granted granted Critical
Publication of EP0945390B1 publication Critical patent/EP0945390B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
    • B66B9/16—Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure
    • B66B9/187—Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure with a liftway specially adapted for temporary connection to a building or other structure

Definitions

  • the invention relates to a construction hoist with a three-sided mast single mast pieces connected to each other via connecting bolts in the area the corner posts of the mast are connectable, and with one along two Cornerstay sliding, equipped with a travel drive platform, the one switching the traction sensor for each one between two Mast pieces provided switching piece, exclusively by the Connecting screw of the two mast pieces in the area of the platform turned off Eckstehers is held in a position detectable by the sensor.
  • the invention is therefore the object of a construction hoist the beginning described type so that with comparatively simple constructive Means secure monitoring of the mast union with a Reliable detection of the mast end can be connected.
  • the invention solves the task by the fact that the mast pieces in in itself known manner aligned, in the joint area between the mast pieces with Carrying distance from each other end safety edges and that the distance between each two of the arranged in the region of the sensor switching strips the loose, with the help of the connecting screw from below against the screw holder the lower of the two mast pieces clamped contact piece can be bridged.
  • the invention advantageously exploits the fact that it is at least at a group of construction hoists is known, the mast for clamping To provide control switches with a ruler, which by flush Safety edges of the poles is formed, for easy monitoring of Mast gland made by the axial distance between the safety edges bridged directly juxtaposed mast pieces by the contact piece is, so that in a proper Mastverschraubung a on the Ruler results in continuous scanning bar for the sensor of the driving platform.
  • the contact piece can Safety bar clearance only if the connecting screw is properly tightened bridged.
  • the detail shown construction hoist has a three-sided mast. 1 on, which is composed of individual mast pieces 2.
  • a driving platform 4 slidably guided, whose Drive 5 drives a pinion 6, which with a rack 7 along a the corner post 3 combs.
  • the individual mast pieces 2, the corresponding sections bear the rack 7 are bolted together in their joint area.
  • the connecting screws 8 connecting struts 9 of the corner post 3 prevail, the connecting screw 10 engages in the area of the Fahrbühne 4 turned Eckstehers 11 in a through hole of welded screw receptacles 12 a, as shown in particular in FIG. 3 can be removed.
  • the mast pieces 2 carry between the Eckstehem 3 aligned Safety edges 13, in the joint area between the mast pieces 2 at a distance end from each other. These are complementary to a ruler across the mast height Safety edges 13 are used in known construction hoists for clamping of control switches, for example, the breakpoints for the platform in different Set heights.
  • the safety edges 13 opposite is located on the platform 4, a sensor 14, the switching strips 13 z. B. inductive scans.
  • the sensor 14 detects the End of a switching strip 13, the traction drive 5 is turned off.
  • Fig. 3 while the Mounting arm 16 from below against the screw holder 12 of each clamped lower of the two mast pieces 2, so that the bridging position of the contact piece 15 is given only when the nut 17 of the Connecting screw 10 is tightened accordingly.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Transportation (AREA)
  • Automation & Control Theory (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Sewage (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Jib Cranes (AREA)
  • Types And Forms Of Lifts (AREA)

Abstract

The mast sections (2) are joined together by connecting screws (8) near the corner post (3) of the mast (1). A traversing platform (4) fitted with a drive mechanism is movably guided along two uprights. A sensor (14) switches on the circuit section's drive mechanism. The mast sections support spaced apart switch strips (13) flush with each other in the abutting part between the mast sections. The distance between each two switch-strips near the sensor is bridged by the loose switch piece clamped against the screw holder of the lower one of the two mast pieces.

Description

Die Erfindung bezieht sich auf einen Bauaufzug mit einem dreiseitigen Mast aus einzelnen Maststücken, die miteinander über Verbindungsschrauben im Bereich der Ecksteher des Mastes verbindbar sind, und mit einer entlang von zwei Eckstehern verschiebbar geführten, mit einem Fahrantrieb ausgerüsteten Fahrbühne, die einen den Fahrantrieb schaltenden Fühler für je ein zwischen zwei Maststücken vorgesehenes Schaltstück aufweist, das ausschließlich durch die Verbindungsschraube der beiden Maststücke im Bereich des der Fahrbühne abgekehrten Eckstehers in einer vom Fühler erfaßbaren Stellung gehalten wird.The invention relates to a construction hoist with a three-sided mast single mast pieces connected to each other via connecting bolts in the area the corner posts of the mast are connectable, and with one along two Cornerstay sliding, equipped with a travel drive platform, the one switching the traction sensor for each one between two Mast pieces provided switching piece, exclusively by the Connecting screw of the two mast pieces in the area of the platform turned off Eckstehers is held in a position detectable by the sensor.

Um beim Zusammensetzen des Mastes eines Bauaufzuges aus einzelnen Maststücken das Befahren eines Maststückes zu verhindern, das noch nicht mit dem bereits montierten Mastteil ordnungsgemäß verschraubt wurde, ist es bekannt (AT 401 924 B), an jedem Maststück im Bereich seines oberen Anschlußendes ein um eine horizontale Achse schwenkbares Schaltstück zu lagern, das mit Hilfe einer Verbindungsschraube für die Maststücke in einer hochgeschwenkten Lage gehalten wird, in der es sich außerhalb des Abtastbereiches eines Fühlers befindet, der auf der entlang des Mastes verfahrbaren Fahrbühne angeordnet ist. Da die untere durch das Eigengewicht bedingte Schwenkstellung des Schaltstückes durch den Fühler erfaßt wird, kann beim Ansprechen des Fühlers der Fahrantrieb der Fahrbühne abgeschaltet werden. Das nicht durch die Mastverschraubung in seiner hochgeschwenkten Lage gehaltene Schaltstück zeigt ja eine nicht ordnungsgemäße Montage an. Da bei einem dreiseitigen Mast die Fahrbühne entlang von zwei Eckstehern des Mastes verfahren wird und das Gewicht der Fahrbühne auf den Mast ein Kippmoment ausübt, das eine Zugbelastung des von der Fahrbühne abgekehrten Eckstehers bedingt, reicht es für eine Unfallverhütung aus, die Schaltstücke zwischen den einzelnen Maststücken im Bereich des von der Fahrbühne abgekehrten Eckstehers vorzusehen. Nachteilig bei dieser bekannten Konstruktion ist allerdings, daß die Maststücke im oberen Anschlußbereich mit schwenkbar gelagerten Schaltstücken ausgerüstet werden müssen, was den Konstruktionsaufwand erhöht und das Nachrüsten bestehender Bauaufzüge erschwert. Außerdem besteht die Gefahr, daß aufgrund des rauhen Baustellenbetriebes die Verschwenkbarkeit des Schaltstückes beeinträchtigt wird, das dann nicht mehr gewichtsbedingt in seine Schaltstellung abschwenkt, was dazu führen kann, daß der Fahrantrieb die Fahrbühne in den Bereich eines nicht ordnungsgemäß verschraubten Maststückes oder über das Ende des letzten Maststückes anhebt, wenn nicht ein gesonderter Fühler zum Erkennen des Mastendes vorgesehen wird.When assembling the mast of a construction hoist from individual mast pieces to prevent the driving of a mast piece that is not yet with the already assembled mast part was screwed properly, it is known (AT 401 924 B), on each mast piece in the area of its upper connection end to store a pivotable about a horizontal axis switching piece, with Help a connecting bolt for the mast pieces in a swung Location is kept outside of the sensing range of a probe located on the traveling platform along the mast is. Since the lower due to the weight of pivoting position of the Switching piece is detected by the probe, can when the probe the traction drive of the platform are switched off. Not through the mast fitting held in its swung position switching piece shows yes improper installation. As with a three-sided mast the Fahrgühne is moved along two corner posts of the mast and the Weight of the platform on the mast a tilting moment that exerts a tensile load conditioned by the cornerstay facing away from the platform, it is sufficient for accident prevention, the switching pieces between the mast pieces to provide in the area of the corner stool facing away from the platform. adversely in this known construction, however, that the mast pieces in Upper connection area equipped with pivotally mounted switching pieces must be, which increases the design effort and retrofitting existing construction lifts made difficult. There is also a risk that due to the rough construction site operation, the pivotability of the contact piece is impaired, then no longer due to weight in its switching position swings down, which can lead to the drive in the driving platform in the Area of a mast piece not properly screwed or over the Lifting end of last mast piece, if not a separate sensor for Detecting the end of the mast is provided.

Der Erfindung liegt somit die Aufgabe zugrunde, einen Bauaufzug der eingangs geschilderten Art so auszugestalten, daß mit vergleichsweise einfachen konstruktiven Mitteln eine sichere Überwachung der Mastverschraubung mit einer zuverlässigen Erkennung des Mastendes verbunden werden kann.The invention is therefore the object of a construction hoist the beginning described type so that with comparatively simple constructive Means secure monitoring of the mast union with a Reliable detection of the mast end can be connected.

Die Erfindung löst die gestellte Aufgabe dadurch, daß die Maststücke in an sich bekannter Weise fluchtende, im Stoßbereich zwischen den Maststücken mit Abstand voneinander endende Schaltleisten tragen und daß der Abstand zwischen je zwei der im Bereich des Fühlers angeordneten Schaltleisten durch das lose, mit Hilfe der Verbindungsschraube von unten gegen die Schraubenaufnahme des jeweils unteren der beiden Maststücke geklemmte Schaltstück überbrückbar ist.The invention solves the task by the fact that the mast pieces in in itself known manner aligned, in the joint area between the mast pieces with Carrying distance from each other end safety edges and that the distance between each two of the arranged in the region of the sensor switching strips the loose, with the help of the connecting screw from below against the screw holder the lower of the two mast pieces clamped contact piece can be bridged.

Die Erfindung nützt in vorteilhafter Weise den Umstand, daß es zumindest bei einer Gruppe von Bauaufzügen bekannt ist, den Mast zum Anklemmen von Steuerschaltern mit einem Schaltlineal zu versehen, das durch fluchtende Schaltleisten der Maststücke gebildet wird, für eine einfache Überwachung der Mastverschraubung aus, indem der axiale Abstand zwischen den Schaltleisten unmittelbar aufeinandergesetzter Maststücke durch das Schaltstück überbrückt wird, so daß sich bei einer ordnungsgemäßen Mastverschraubung eine über das Schaltlineal durchgehende Abtastleiste für den Fühler der Fahrbühne ergibt. Da das lose Schaltstück mit Hilfe einer der Verbindungsschrauben zwischen den jeweiligen Maststücken von unten gegen die Schraubenaufnahme des jeweils unteren dieser beiden Maststücke geklemmt wird, kann das Schaltstück den Schaltleistenabstand nur bei einem ordnungsgemäßen Anziehen der Verbindungsschraube überbrücken. Außerdem erzwingen die als lose Teile ausgebildeten Schaltstücke ein bei jedem Mastaufbau zu wiederholendes, gesondertes Anklemmen der Schaltstücke, wodurch die angestrebte Sicherheit bei der Überwachung der Mastverschraubung gewährleistet werden kann. In diesem Zusammenhang ist zu berücksichtigen, daß ein lediglich von unten auf die Verbindungsschraube aufgestecktes und nicht durch eine Schraubenmutter gesichertes Schaltstück gewichtsbedingt von der Verbindungsschraube abfällt. Erst mit dem Anziehen der Schraubenmutter und der damit verbundenen Mastverschraubung wird die vom Fühler erfaßbare Überbrückungsstellung des Schaltstückes ermöglicht. Fehlt das Schaltstück, so wird der Fahrantrieb für die Fahrbühne abgeschaltet. In gleicher Weise schaltet der Fühler den Fahrantrieb beim Erreichen des jeweiligen Mastendes ab. Es erübrigt sich daher ein gesonderter Endschalter für diesen Zweck.The invention advantageously exploits the fact that it is at least at a group of construction hoists is known, the mast for clamping To provide control switches with a ruler, which by flush Safety edges of the poles is formed, for easy monitoring of Mast gland made by the axial distance between the safety edges bridged directly juxtaposed mast pieces by the contact piece is, so that in a proper Mastverschraubung a on the Ruler results in continuous scanning bar for the sensor of the driving platform. There the loose contact piece with the help of one of the connecting screws between the respective mast pieces from below against the screw receptacle of each bottom of these two mast pieces is clamped, the contact piece can Safety bar clearance only if the connecting screw is properly tightened bridged. In addition, the trained as loose parts Contact pieces to be repeated at each post construction, separate Clamping the contact pieces, whereby the desired safety in the Monitoring of Mastverschraubung can be ensured. In this context It should be noted that only from below on the connecting screw plugged and not secured by a nut Shifter weight drops due to the connecting screw. First with tightening the nut and the associated Mastverschraubung is detected by the sensor bridging position of the switching piece allows. If the switching piece is missing, the traction drive for the Mobile platform switched off. In the same way, the sensor switches the travel drive when reaching the respective mast end. There is therefore no need for a separate one Limit switch for this purpose.

In der Zeichnung ist der Erfindungsgegenstand beispielsweise dargestellt. Es zeigen

Fig. 1
den Mast eines erfindungsgemäßen Bauaufzuges ausschnittsweise im Stoßbereich zwischen zwei Maststücken in einer Ansicht von der Seite der Fahrbühne her,
Fig. 2
einen Schnitt nach der Linie II-II der Fig. 1 und
Fig. 3
einen Schnitt nach der Linie III-III der Fig. 1.
In the drawing, the subject invention is shown, for example. Show it
Fig. 1
the mast of a construction hoist according to the invention in sections in the joint area between two mast pieces in a view from the side of the driving platform,
Fig. 2
a section along the line II-II of Fig. 1 and
Fig. 3
a section along the line III-III of Fig. 1st

Der ausschnittsweise dargestellte Bauaufzug weist einen dreiseitigen Mast 1 auf, der aus einzelnen Maststücken 2 zusammengesetzt ist. Entlang von zwei Eckstehern 3 des Mastes 1 ist eine Fahrbühne 4 verschiebbar geführt, deren Fahrantrieb 5 ein Zahnritzel 6 antreibt, das mit einer Zahnstange 7 entlang eines der Ecksteher 3 kämmt. Die einzelnen Maststücke 2, die entsprechende Abschnitte der Zahnstange 7 tragen, sind in ihrem Stoßbereich miteinander verschraubt. Während im Bereich der die Führung für die Fahrbühne 4 bildenden Ecksteher 3 die Verbindungsschrauben 8 Verbindungsstreben 9 der Ecksteher 3 durchsetzen, greift die Verbindungsschraube 10 im Bereich des von der Fahrbühne 4 abgekehrten Eckstehers 11 in eine Durchgangsbohrung von angeschweißten Schraubenaufnahmen 12 ein, wie dies insbesondere der Fig. 3 entnommen werden kann.The detail shown construction hoist has a three-sided mast. 1 on, which is composed of individual mast pieces 2. Along two Eckstehern 3 of the mast 1 is a driving platform 4 slidably guided, whose Drive 5 drives a pinion 6, which with a rack 7 along a the corner post 3 combs. The individual mast pieces 2, the corresponding sections bear the rack 7 are bolted together in their joint area. While in the area of the guide for the driving platform 4 forming Corner post 3 the connecting screws 8 connecting struts 9 of the corner post 3 prevail, the connecting screw 10 engages in the area of the Fahrbühne 4 turned Eckstehers 11 in a through hole of welded screw receptacles 12 a, as shown in particular in FIG. 3 can be removed.

Die Maststücke 2 tragen zwischen den Eckstehem 3 miteinander fluchtende Schaltleisten 13, die im Stoßbereich zwischen den Maststücken 2 mit Abstand voneinander enden. Diese sich zu einem Schaltlineal über die Masthöhe ergänzenden Schaltleisten 13 dienen bei bekannten Bauaufzügen zum Anklemmen von Steuerschaltern, die beispielseise Haltepunkte für die Fahrbühne in verschiedenen Höhen festlegen.The mast pieces 2 carry between the Eckstehem 3 aligned Safety edges 13, in the joint area between the mast pieces 2 at a distance end from each other. These are complementary to a ruler across the mast height Safety edges 13 are used in known construction hoists for clamping of control switches, for example, the breakpoints for the platform in different Set heights.

Den Schaltleisten 13 gegenüber befindet sich auf der Fahrbühne 4 ein Fühler 14, der die Schaltleisten 13 z. B. induktiv abtastet. Erfaßt der Fühler 14 das Ende einer Schaltleiste 13, so wird der Fahrantrieb 5 abgeschaltet. Um den Fahrweg der Fahrbühne nicht auf ein Maststück 2 zu beschränken, werden die Abstände zwischen den Schaltleisten 13 durch lose Teile bildende Schaltstücke 15 überbrückt, die über ihren Befestigungsarm 16 von den jeweiligen Verbindungsschrauben 10 im Bereich des Eckstehers 11 in der Überbrückungsstellung gehalten werden. Wie der Fig. 3 entnommen werden kann, wird dabei der Befestigungsarm 16 von unten gegen die Schraubenaufnahme 12 des jeweils unteren der beiden Maststücke 2 festgeklemmt, so daß die Überbrückungsstellung des Schaltstückes 15 nur dann gegeben ist, wenn die Mutter 17 der Verbindungsschraube 10 entsprechend angezogen wird. Bei einem ausreichenden Spiel der Durchtrittsöffnung des Befestigungsarmes 16 für die Verbindungsschraube 10 ist somit die Sicherheit gegeben, daß die Fahrbühne 4 nur bei einer ordnungsgemäßen Mastverschraubung im Bereich des Eckstehers 11 das anschließende Maststück befahren kann. Da eine Fortsetzung der Schaltleisten 13 im Bereich des Mastendes fehlt, dient der Fühler 14 auch für eine Sicherheitsendabschaltung.The safety edges 13 opposite is located on the platform 4, a sensor 14, the switching strips 13 z. B. inductive scans. The sensor 14 detects the End of a switching strip 13, the traction drive 5 is turned off. To the Track of the platform not to be limited to a mast piece 2, the Distances between the switching strips 13 by loose parts forming switching pieces 15 bridged over their attachment arm 16 of the respective connecting screws 10 in the area of the Eckstehers 11 in the bridging position being held. As can be seen from Fig. 3, while the Mounting arm 16 from below against the screw holder 12 of each clamped lower of the two mast pieces 2, so that the bridging position of the contact piece 15 is given only when the nut 17 of the Connecting screw 10 is tightened accordingly. With a sufficient Play the passage opening of the mounting arm 16 for the connecting screw 10 is thus given the security that the platform 4 only at a proper Mastverschraubung in the field of Eckstehers 11 the can drive on subsequent mast piece. As a continuation of the safety edges 13 is missing in the mast end, the sensor 14 is also used for a Sicherheitsendabschaltung.

Claims (1)

  1. A building lift with a three-sided mast consisting of individual mast parts which are adapted to be interconnected via connecting screws in the region of the corner uprights of the mast, and with a platform which is guided to be displaceable along two corner uprights and which is equipped with a drive and which comprises a sensor, which switches the drive, for each switching member provided between two mast parts, said switching member being kept in a position detectable by the sensor solely by the connecting screw of the two mast parts in the region of the corner upright remote from the platform, characterised in that the mast parts (2) carry aligned switching strips (13) which terminate at a distance from one another in the junction zone between the mast parts (2) and in that the distance between each two of the switching strips (13) disposed in the region of the sensor (14) can be bridged by the loose switching member (15) which by means of the connecting screw (10) is clamped from below against the screw socket (12) of the respective lower one of the two mast parts (2).
EP99890080A 1998-03-25 1999-03-10 Mast of a construction hoist Expired - Lifetime EP0945390B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT99890080T ATE273234T1 (en) 1998-03-25 1999-03-10 MAST OF A CONSTRUCTION ELEVATOR

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT52798 1998-03-25
AT0052798A AT406257B (en) 1998-03-25 1998-03-25 CONSTRUCTION LIFT

Publications (3)

Publication Number Publication Date
EP0945390A2 EP0945390A2 (en) 1999-09-29
EP0945390A3 EP0945390A3 (en) 2002-01-30
EP0945390B1 true EP0945390B1 (en) 2004-08-11

Family

ID=3492991

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99890080A Expired - Lifetime EP0945390B1 (en) 1998-03-25 1999-03-10 Mast of a construction hoist

Country Status (3)

Country Link
EP (1) EP0945390B1 (en)
AT (2) AT406257B (en)
DE (1) DE59910157D1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4405651C1 (en) * 1994-02-22 1995-08-10 Zeppenfeld Aloys Gmbh Elevator or lift used on building site
AT401924B (en) * 1995-03-28 1996-12-27 Ebbs & Radinger Maschhandel CLIMBING ELEVATOR

Also Published As

Publication number Publication date
ATE273234T1 (en) 2004-08-15
EP0945390A3 (en) 2002-01-30
ATA52798A (en) 1999-08-15
EP0945390A2 (en) 1999-09-29
AT406257B (en) 2000-03-27
DE59910157D1 (en) 2004-09-16

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