EP1136423A1 - Device for limiting the maximum speed of a balancing hoist - Google Patents

Device for limiting the maximum speed of a balancing hoist Download PDF

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Publication number
EP1136423A1
EP1136423A1 EP01250086A EP01250086A EP1136423A1 EP 1136423 A1 EP1136423 A1 EP 1136423A1 EP 01250086 A EP01250086 A EP 01250086A EP 01250086 A EP01250086 A EP 01250086A EP 1136423 A1 EP1136423 A1 EP 1136423A1
Authority
EP
European Patent Office
Prior art keywords
housing
threaded spindle
pawl
stop element
cable drum
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
EP01250086A
Other languages
German (de)
French (fr)
Other versions
EP1136423B1 (en
Inventor
Jürgen Heun
Markus Dipl.-Ing. Löbel
Klaus-Jürgen Dipl.-Ing. Winter (FH)
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.)
Demag Cranes and Components GmbH
Original Assignee
Atecs Mannesmann GmbH
Demag Cranes and Components 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 Atecs Mannesmann GmbH, Demag Cranes and Components GmbH filed Critical Atecs Mannesmann GmbH
Publication of EP1136423A1 publication Critical patent/EP1136423A1/en
Application granted granted Critical
Publication of EP1136423B1 publication Critical patent/EP1136423B1/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
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/18—Power-operated hoists
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/04—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes actuated by centrifugal force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/02—Hoists or accessories for hoists
    • B66D2700/023—Hoists
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/03—Mechanisms with latches or braking devices in general for capstans, hoists or similar devices as well as braking devices actuated electrically or by fluid under pressure

Definitions

  • the invention relates to a device for limiting the upper speed of a Balancing hoist according to the preamble of claim 1.
  • Balancing hoists are known, in particular from the patent publications US 5,553,832, US 5,522,581, US 5,556,077 and US 5,439,200. With these The axial movement of a hollow piston becomes a rotary movement of a hoist Converted rope or chain storage drum or a chain sprocket. This Conversion is done using a ball screw. Depending on the principle chosen is either the spindle rotatably in a housing and the nut with the Drum longitudinally displaceable on the spindle (at 5.553.832, 5.522.581, 5.556.077 Fig. 11 u. 5.439.200 Fig.
  • the known hoists have a number of pawls, one by one Threaded spindle parallel swivel axis from a - seen radially - inside Rest position in an external braking position are pivotable.
  • the pawl pivots against a resilient spring force.
  • the handle points with the free end of the rope drum in the direction of rotation. Due to the pre-tensioning retention force of the spring, the pawl pivots a predetermined speed due to centrifugal force with its free end in the Braking position. In the braking position, the pawls suddenly wedge in fixed housing, causing the rotation of the drum or the chain sprocket with which the pawls are positively connected, is also stopped suddenly.
  • the known devices for limiting the upper speed have the Disadvantage that the pawls suddenly wedge in the housing and thereby one Generate impact loads in the adjacent construction, but not in their strength can be influenced. There may be deformations or breakage associated with it Components come, so that the connecting structures and / or the hoist is unusable. Consequently, after a damage event, the Limiting device performed a functional test and individual components may be replaced. The functional test and the exchange of individual components the limiting device are in the known hoists only after one elaborate disassembly possible, in which the device is additionally suspended must be separated.
  • the object of the invention is to provide a device for limiting the upper Specify the speed of a balancing hoist, after which a simple Functional test and a simple replacement of defective components is possible without that the hoist was previously detached from the suspension and then expensive must be dismantled.
  • the solution provides that one end of the threaded spindle is in one from the outside accessible housing chamber protrudes, which is preferably closed like a lid, and that at the end of the spindle a device for limiting the upper speed of the Spindle is arranged.
  • This limiting device is frictionally engaged with the spindle connected.
  • the stop element or elements are fixed on the inside of the housing arranged.
  • the idea of the invention is therefore the device in one separate housing chamber to be arranged after removing a cover that the Housing chamber sealed dust-tight, easily accessible from the outside. In these The housing chamber projects into the threaded spindle, which with the swivel axes of the Brake pawls is connected.
  • the or each stop element is inside formed on the housing, for example as a thickening of the housing wall on the Inside.
  • Fig. 1 shows a balancing hoist with a housing 10, the - based on Fig. 1 - right half is designed as a hollow cylinder 11.
  • the hollow cylinder 11 is through a Cover 12 closed with a seal 13 dustproof.
  • a cylindrical piston 14 with a sealing ring 15 is displaceable arranged in the longitudinal direction of the Hollow cylinder 11, a cylindrical piston 14 with a sealing ring 15 is displaceable arranged.
  • the piston 14 lies with an axial bearing 16 on one end face Cable drum 17, which has a key 18 with the right end of a Threaded spindle 19 is torsionally and flexurally connected.
  • the cable drum 17 has its outer circumference grooves 20 for receiving a wire rope 21.
  • Die Threaded spindle 19 is rotatably mounted in a ball nut 19a, which is non-rotatable is arranged in the housing 10.
  • the piston 14, the cable drum 17 and the threaded spindle 19 are in Fig. 1 in the upper half of the picture in her left and in the lower half in her right End position shown.
  • the wire rope 21 is on the Cable drum 17 completely wound up (highest load position) and in the right End position completely handled (lowest load position).
  • the cable drum 17 running wire rope 21 exits the housing 10 through an opening 21a and carries a payload, not shown, at its free end.
  • the threaded spindle 19 projects with its left end in relation to FIG. 1 into a Housing chamber 22, which can be closed in a dust-tight manner with a cover 22a.
  • FIGS. 2 and 3 show the device for limiting the upper speed removed cover 22a in a schematic representation (Fig. 3 as Cross section through the device of FIG. 2 along the line of sight III - III).
  • Fig. 3 as Cross section through the device of FIG. 2 along the line of sight III - III.
  • the pawls 24 are biased inwards by a spring 26 drawn, that is, when the threaded spindle 19 is at a standstill held.
  • the threaded spindle 19 there is an inner cone 27 by means of a key 27a and adhesive non-rotatably attached.
  • the outer cone 23 is pushed onto this inner cone 27 is clamped in the axial direction via a washer 28 and a screw 29. This creates a non-positive rotary connection between the inner cone 27 and the outer cone 23.
  • the transmissible torque can be determined by the size of the Preload force can be set with screw 29.
  • the key 27a protrudes its left end into a recess in the disc 28, thereby facing the latter the threaded spindle 19 is held in a rotationally fixed manner.
  • Pins 30 are fastened to the pawls 24 and open in openings 31 in the outer cone 23 protrude into it (see Fig. 4).
  • Cam-like thickenings are arranged on the housing as a stop element 32 point to the threaded spindle 19.
  • the device works as follows: As the speed of the cable drum 17 increases, the pawls 24 are moved radially outward about the pivot axes 25 against the retaining force of the springs 26. At a limit speed of the threaded spindle 19 (and thus the cable drum 17), surfaces 33 (contact surfaces) arranged on the pawls 24 bear against the thickenings 32 and stop the rotational movement of the outer cone 23.
  • the pins 30 limit in cooperation with a corresponding arrangement of the Openings 31 the pivoting angle of the pawls 24. They guarantee that only the Surfaces 33 come into contact with the stop elements 32. It also achieves that the springs 26 are not overstretched.
  • the rotation occurs via the frictional connection between the inner cone 27 and the outer cone 23 the rotating spindle 19 and thus the drum 17 stopped.
  • the size of the delay is adjustable via the preload force of the screw 29 and thus the slip torque. Due to the positive connection between the key 27a and the disk 28, a Changing the biasing force of the screw 29 avoided in the event of a fall.
  • the Trigger speed is adjustable via the bias of the springs 26.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Centrifugal Separators (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

A fixed stopper radially and inwardly projects from a housing (10) at a level with a brake position. The stopper engages with a pawl in the brake position in order to brake the rotation of a cable drum until its standstill. One end of a threaded spindle (19) projects into the chamber (22) of the housing and is connected to a pivot pin. An Independent claim is also included for a safety device.

Description

Die Erfindung betrifft eine Einrichtung zur Begrenzung der oberen Drehzahl eines Balancier-Hebezeugs gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a device for limiting the upper speed of a Balancing hoist according to the preamble of claim 1.

Balancier-Hebezeuge sind bekannt, insbesondere aus den Patentveröffentlichungen US 5,553,832, US 5,522,581, US 5,556,077 und US 5,439,200. Bei diesen Hebezeugen wird die Axialbewegung eines Hohlkolbens in eine Drehbewegung einer Seil- oder Kettenspeichertrommel oder einer Kettennuß umgewandelt. Diese Umwandlung geschieht mittels eines Kugelgewindetriebes. Je nach gewähltem Prinzip ist hierbei entweder die Spindel drehfest in einem Gehäuse und die Mutter mit der Trommel längsverschieblich auf der Spindel (bei 5.553.832, 5.522.581, 5.556.077 Fig. 11 u. 5.439.200 Fig. 11) oder die Mutter ist axial fixiert und drehbar und die Spindel axial verschieblich und drehbehindert (bei 5.556.077 Fig. 1 u. 5.439.200 Fig. 1). Weiter weisen die bekannten Hebezeuge mehrere Klinken auf, die um eine zur Gewindespindel parallele Schwenkachse aus einer - radial gesehen - innen liegenden Ruhestellung in eine außen liegende Bremsstellung schwenkbar sind. Die Schwenkbewegung der Klinke erfolgt gegen eine rückstellende Federkraft. Die Klinke weist beim Drehen der Seiltrommel mit ihrem freien Ende jeweils in Drehrichtung. Aufgrund der vorspannenden Rückhaltekraft der Feder schwenkt die Klinke erst ab einer vorbestimmten Drehzahl fliehkraftbedingt mit ihrem freien Ende in die Bremsstellung. In der Bremsstellung verkeilen sich die Klinken schlagartig im feststehenden Gehäuse, wodurch die Drehung der Trommel oder der Kettennuß mit denen die Klinken formschlüssig verbunden sind, ebenfalls schlagartig gestoppt wird.Balancing hoists are known, in particular from the patent publications US 5,553,832, US 5,522,581, US 5,556,077 and US 5,439,200. With these The axial movement of a hollow piston becomes a rotary movement of a hoist Converted rope or chain storage drum or a chain sprocket. This Conversion is done using a ball screw. Depending on the principle chosen is either the spindle rotatably in a housing and the nut with the Drum longitudinally displaceable on the spindle (at 5.553.832, 5.522.581, 5.556.077 Fig. 11 u. 5.439.200 Fig. 11) or the nut is axially fixed and rotatable and the spindle axially displaceable and non-rotating (with 5,556,077 Fig. 1 and 5,439,200 Fig. 1). Further the known hoists have a number of pawls, one by one Threaded spindle parallel swivel axis from a - seen radially - inside Rest position in an external braking position are pivotable. The The pawl pivots against a resilient spring force. The handle points with the free end of the rope drum in the direction of rotation. Due to the pre-tensioning retention force of the spring, the pawl pivots a predetermined speed due to centrifugal force with its free end in the Braking position. In the braking position, the pawls suddenly wedge in fixed housing, causing the rotation of the drum or the chain sprocket with which the pawls are positively connected, is also stopped suddenly.

Die bekannten Einrichtungen zur Begrenzung der oberen Drehzahl haben den Nachteil, dass sich die Klinken schlagartig im Gehäuse verkeilen und dadurch eine Stossbelastung auch in der Anschlusskonstruktion erzeugen, die in ihrer Stärke nicht beeinflussbar ist. Es kann zu Verformungen oder zum Bruch von zugehörigen Bauteilen kommen, so dass die Anschlusskonstruktionen und/oder das Hebezeug unbrauchbar ist. Folglich muss nach einem Schadensfall mit aktivgewordener Begrenzungseinrichtung eine Funktionsprüfung durchgeführt und einzelne Bauteile ggf. ersetzt werden. Die Funktionsprüfung als auch der Austausch einzelner Bauteile der Begrenzungseinrichtung sind bei den bekannten Hebezeugen nur nach einer aufwendigen Demontage möglich, bei der das Gerät zusätzlich von der Aufhängung getrennt werden muss.The known devices for limiting the upper speed have the Disadvantage that the pawls suddenly wedge in the housing and thereby one Generate impact loads in the adjacent construction, but not in their strength can be influenced. There may be deformations or breakage associated with it Components come, so that the connecting structures and / or the hoist is unusable. Consequently, after a damage event, the Limiting device performed a functional test and individual components may be replaced. The functional test and the exchange of individual components the limiting device are in the known hoists only after one elaborate disassembly possible, in which the device is additionally suspended must be separated.

Die Aufgabe der Erfindung ist es, eine Einrichtung zur Begrenzung der oberen Drehzahl eines Balancier-Hebezeugs anzugeben, bei der nach eine einfache Funktionsprüfung und ein einfacher Austausch defekter Bauteile möglich ist, ohne dass das Hebezeug zuvor von der Aufhängung gelöst und anschließend aufwendig demontiert werden muss.The object of the invention is to provide a device for limiting the upper Specify the speed of a balancing hoist, after which a simple Functional test and a simple replacement of defective components is possible without that the hoist was previously detached from the suspension and then expensive must be dismantled.

Die Lösung dieser Aufgabe ist durch die im Anspruch 1 angegebenen Merkmale gegeben, durch die kennzeichnenden Merkmale der Unteransprüche ist die Einrichtung in vorteilhafter Weise weiter ausgestaltet.This object is achieved by the features specified in claim 1 given by the characterizing features of the subclaims Device further advantageously configured.

Die Lösung sieht vor, dass ein Ende der Gewindespindel in eine von außen zugängliche Gehäusekammer ragt, die vorzugsweise deckelartig verschlossen ist, und dass am Ende der Spindel eine Einrichtung zum Begrenzen der oberen Drehzahl der Spindel angeordnet ist. Diese Begrenzungseinrichtung ist mit der Spindel reibschlüssig verbunden. Das oder die Stoppelemente sind innen am Gehäuse feststehend angeordnet. Der Erfindungsgedanke besteht folglich darin, die Einrichtung in einer separaten Gehäusekammer anzuordnen, die nach Entfernen eines Deckels, der die Gehäusekammer staubdicht verschließt, von außen leicht zugänglich ist. In diese Gehäusekammer ragt die Gewindespindel hinein, welche mit den Schwenkachsen der Bremsklinken verbunden ist. Das oder jedes Stoppelement ist bei dieser Lösung innen am Gehäuse ausgebildet, beispielsweise als Verdickung der Gehäusewand auf der Innenseite. The solution provides that one end of the threaded spindle is in one from the outside accessible housing chamber protrudes, which is preferably closed like a lid, and that at the end of the spindle a device for limiting the upper speed of the Spindle is arranged. This limiting device is frictionally engaged with the spindle connected. The stop element or elements are fixed on the inside of the housing arranged. The idea of the invention is therefore the device in one separate housing chamber to be arranged after removing a cover that the Housing chamber sealed dust-tight, easily accessible from the outside. In these The housing chamber projects into the threaded spindle, which with the swivel axes of the Brake pawls is connected. With this solution, the or each stop element is inside formed on the housing, for example as a thickening of the housing wall on the Inside.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachfolgend näher beschrieben. Es zeigen:

Fig. 1
einen Längsschnitt durch ein Balancier-Hebezeug,
Fig. 2
eine Ansicht der Einrichtung zur Begrenzung der Drehzahl,
Fig. 3
einen Querschnitt durch die Einrichtung gemäß Fig. 3 entlang der Sichtlinie III - III und
Fig. 4
einen Querschnitt gemäß Fig. 3 entlang der Sichtlinie IV - IV.
An embodiment of the invention is shown in the drawing and will be described in more detail below. Show it:
Fig. 1
a longitudinal section through a balancing hoist,
Fig. 2
a view of the device for limiting the speed,
Fig. 3
a cross section through the device of FIG. 3 along the line of sight III - III and
Fig. 4
3 along the line of sight IV - IV.

Fig. 1 zeigt ein Balancier-Hebezeug mit einem Gehäuse 10, dessen - bezogen auf Fig. 1 - rechte Hälfte als Hohlzylinder 11 ausgebildet ist. Der Hohlzylinder 11 ist durch einen Deckel 12 mit einer Dichtung 13 staubdicht verschlossen. In Längsrichtung des Hohlzylinders 11 ist ein zylinderförmiger Kolben 14 mit einem Dichtring 15 verschiebbar angeordnet. Der Kolben 14 liegt mit einem Axiallager 16 an einer Stirnfläche einer Seiltrommel 17 an, die über eine Passfeder 18 mit dem rechten Ende einer Gewindespindel 19 dreh- und biegesteif verbunden ist. Die Seiltrommel 17 besitzt auf ihrem äußeren Umfang Rillen 20 zur Aufnahme eines Drahtseils 21. Die Gewindespindel 19 ist in einer Kugelumlaufmutter 19a drehbar gelagert, die drehfest im Gehäuse 10 angeordnet ist.Fig. 1 shows a balancing hoist with a housing 10, the - based on Fig. 1 - right half is designed as a hollow cylinder 11. The hollow cylinder 11 is through a Cover 12 closed with a seal 13 dustproof. In the longitudinal direction of the Hollow cylinder 11, a cylindrical piston 14 with a sealing ring 15 is displaceable arranged. The piston 14 lies with an axial bearing 16 on one end face Cable drum 17, which has a key 18 with the right end of a Threaded spindle 19 is torsionally and flexurally connected. The cable drum 17 has its outer circumference grooves 20 for receiving a wire rope 21. Die Threaded spindle 19 is rotatably mounted in a ball nut 19a, which is non-rotatable is arranged in the housing 10.

Der Kolben 14, die Seiltrommel 17 und die Gewindespindel 19 sind in Fig. 1 in der oberen Bildhälfte in ihrer linken und in der unteren Bildhälfte in ihrer rechten Endstellung dargestellt. In der linken Endstellung ist das Drahtseil 21 auf der Seiltrommel 17 vollständig aufgewickelt (höchste Laststellung) und in der rechten Endstellung vollständig abgewickelt (tiefste Laststellung). Das von der Seiltrommel 17 ablaufende Drahtseil 21 tritt durch eine Öffnung 21a aus dem Gehäuse 10 aus und trägt an seinem freien Ende eine nicht gezeigte Nutzlast.The piston 14, the cable drum 17 and the threaded spindle 19 are in Fig. 1 in the upper half of the picture in her left and in the lower half in her right End position shown. In the left end position, the wire rope 21 is on the Cable drum 17 completely wound up (highest load position) and in the right End position completely handled (lowest load position). The cable drum 17 running wire rope 21 exits the housing 10 through an opening 21a and carries a payload, not shown, at its free end.

Die Gewindespindel 19 ragt mit ihren bezogen auf Fig. 1 linken Ende in eine Gehäusekammer 22, die mit einem Deckel 22a staubdicht verschließbar ist. The threaded spindle 19 projects with its left end in relation to FIG. 1 into a Housing chamber 22, which can be closed in a dust-tight manner with a cover 22a.

Fig. 2 und 3 zeigen die Einrichtung zur Begrenzung der oberen Drehzahl bei abgenommenem Deckel 22a in einer schematischen Darstellung (Fig. 3 als Querschnitt durch die Einrichtung gemäß Fig. 2 entlang der Sichtlinie III - III). An der Spindel 19 ist ein plattenförmiger Außenkonus 23 befestigt, an dessen Außenring zwei jeweils um eine zapfenartige Schwenkachse 25 verschwenkbare Klinken 24 vorgesehen sind. Die Klinken 24 werden von einer Feder 26 vorgespannt nach innen gezogen, also bei Stillstand der Gewindespindel 19 in ihrer Bereitschaftsstellung gehalten.2 and 3 show the device for limiting the upper speed removed cover 22a in a schematic representation (Fig. 3 as Cross section through the device of FIG. 2 along the line of sight III - III). At the Spindle 19 is attached to a plate-shaped outer cone 23, two on the outer ring pawls 24 each pivotable about a pin-like pivot axis 25 are provided. The pawls 24 are biased inwards by a spring 26 drawn, that is, when the threaded spindle 19 is at a standstill held.

An der Gewindespindel 19 ist ein Innenkonus 27 mittels Passfeder 27a und Klebstoff drehfest befestigt. Auf diesen Innenkonus 27 ist der Außenkonus 23 geschoben, der über eine Scheibe 28 und eine Schraube 29 in axialer Richtung verspannt wird. Hierdurch entsteht eine kraftschlüssige Drehverbindung zwischen dem Innenkonus 27 und dem Außenkonus 23. Das übertragbare Drehmoment kann über die Größe der Vorspannkraft mit der Schraube 29 eingestellt werden. Die Passfeder 27a ragt mit ihrem linken Ende in eine Ausnehmung der Scheibe 28, wodurch letztere gegenüber der Gewindespindel 19 drehfest gehalten ist.On the threaded spindle 19 there is an inner cone 27 by means of a key 27a and adhesive non-rotatably attached. The outer cone 23 is pushed onto this inner cone 27 is clamped in the axial direction via a washer 28 and a screw 29. This creates a non-positive rotary connection between the inner cone 27 and the outer cone 23. The transmissible torque can be determined by the size of the Preload force can be set with screw 29. The key 27a protrudes its left end into a recess in the disc 28, thereby facing the latter the threaded spindle 19 is held in a rotationally fixed manner.

An den Klinken 24 sind Stifte 30 gefestigt, die in Öffnungen 31 des Außenkonus 23 hineinragen (s. Fig. 4).Pins 30 are fastened to the pawls 24 and open in openings 31 in the outer cone 23 protrude into it (see Fig. 4).

Am Gehäuse sind nockenartige Verdickungen als Stoppelement 32 angeordnet, die zur Gewindespindel 19 weisen.Cam-like thickenings are arranged on the housing as a stop element 32 point to the threaded spindle 19.

Die Funktionsweise der Einrichtung ist wie folgt:
Bei zunehmender Drehzahl der Seiltrommel 17 werden die Klinken 24 um die Schwenkachsen 25 gegen die Rückhaltekraft der Federn 26 radial nach außen bewegt. Bei einer Grenzdrehzahl der Gewindespindel 19 (und damit der Seiltrommel 17) legen sich an den Klinken 24 angeordnete Flächen 33 (Anlageflächen) an die Verdickungen 32 an und stoppen die Drehbewegung des Außenkonus 23. The device works as follows:
As the speed of the cable drum 17 increases, the pawls 24 are moved radially outward about the pivot axes 25 against the retaining force of the springs 26. At a limit speed of the threaded spindle 19 (and thus the cable drum 17), surfaces 33 (contact surfaces) arranged on the pawls 24 bear against the thickenings 32 and stop the rotational movement of the outer cone 23.

Die Stifte 30 begrenzen im Zusammenwirken mit einer entsprechenden Anordnung der Öffnungen 31 den Schwenkwinkel der Klinken 24. Sie garantieren, dass nur die Flächen 33 mit den Stoppelementen 32 in Kontakt kommen. Außerdem wird erreicht, dass die Federn 26 nicht überdehnt werden.The pins 30 limit in cooperation with a corresponding arrangement of the Openings 31 the pivoting angle of the pawls 24. They guarantee that only the Surfaces 33 come into contact with the stop elements 32. It also achieves that the springs 26 are not overstretched.

Über den Reibschluss zwischen Innenkonus 27 und Außenkonus 23 wird die Drehung der Drehspindel 19 und damit der Trommel 17 mitangehalten. Durch den Reibschluss zwischen dem Außenkonus 23 und dem Innenkonus 27 wird erreicht, dass die Drehbewegung nicht plötzlich, sondern erst mit einer Zeitverzögerung erfolgt, wodurch die dynamischen Kräfte im Fangfall reduzierbar sind. Die Größe der Verzögerung ist über die Vorspannkraft der Schraube 29 und damit des Rutschmomentes einstellbar. Durch den Formschluss zwischen der Passfeder 27a und der Scheibe 28 wird ein Verändern der Vorspannkraft der Schraube 29 im Fangfall vermieden. Die Auslösedrehzahl ist über die Vorspannung der Federn 26 einstellbar. The rotation occurs via the frictional connection between the inner cone 27 and the outer cone 23 the rotating spindle 19 and thus the drum 17 stopped. By friction between the outer cone 23 and the inner cone 27 it is achieved that the Rotary movement does not occur suddenly, but only with a time delay, whereby the dynamic forces in the event of a fall can be reduced. The size of the delay is adjustable via the preload force of the screw 29 and thus the slip torque. Due to the positive connection between the key 27a and the disk 28, a Changing the biasing force of the screw 29 avoided in the event of a fall. The Trigger speed is adjustable via the bias of the springs 26.

Bezugszeichenliste:Reference symbol list:

1010th
Gehäusecasing
1111
HohlzylinderHollow cylinder
1212th
Deckelcover
1313
Dichtungpoetry
1414
Kolbenpiston
1515
DichtringSealing ring
1616
AxiallagerThrust bearing
1717th
SeiltrommelRope drum
1818th
PassfederAdjusting spring
1919th
GewindespindelThreaded spindle
19a19a
KugelumlaufmutterRecirculating ball nut
2020th
Rillegroove
2121
DrahtseilWire rope
21a21a
Öffnungopening
2222
GehäusekammerHousing chamber
22a22a
Deckelcover
2323
AußenkonusOuter cone
2424th
Klinkepawl
2525th
SchwenkachseSwivel axis
2626
Federfeather
2727
InnenkonusInner cone
27a27a
PassfederAdjusting spring
2828
Scheibedisc
2929
Schraubescrew
3030th
Stiftpen
3131
Öffnungopening
3232
Verdickungthickening
3333
AnschlagflächeAbutment surface

Claims (7)

Einrichtung zur Begrenzung der oberen Drehzahl eines Balancier-Hebezeugs, insbesondere zur Notabbremsung des Hebezeugs, das eine in einem Gehäuse (10) drehgelagerte, mittels eines pneumatisch im Gehäuse (10) längsverschiebbaren Kolbens (14) drehbare und eine Seiltrommel (17) tragende Gewindespindel (19) sowie eine mit dem Gehäuse (10) fest verbundene Spindelmutter aufweist, wobei die auf der Gewindespindel (19) längsverschiebliche Seiltrommel (17) drehfest mit dieser verbunden ist, mit mindestens einem gegen eine elastische Rückhaltekraft um eine zur Gewindespindel (19) parallele Schwenkachse (25) von einer radial innenliegenden Ruhestellung zu einer außenliegenden Bremsstellung verschwenkbaren Klinke (24), die bei drehender Seiltrommel (17) jeweils in Drehrichtung weist und fliehkraftbeaufschlagt ab einer von der Größe der Rückhaltekraft vorbestimmten Drehzahl mit ihrem freien Ende in die Bremsstellung verschwenkbar ist, mit zumindest einem feststehenden radial auf Höhe der außenliegenden Bremsstellung angeordneten Stoppelement (32), das mit der in der außenliegenden Bremsstellung befindlichen Klinke (24) zusammenwirkend die Drehbewegung der Seiltrommel (17) bis zu deren Stillstand abbremst, dadurch gekennzeichnet, dass ein Ende der Gewindespindel (19) in eine von außen zugängliche Gehäusekammer (22) ragt und dort mit der Schwenkachse (25) verbunden ist und dass das oder jedes Stoppelement (32) innen am Gehäuse (10) feststehend angeordnet ist.Device for limiting the upper speed of a balancing hoist, in particular for emergency braking of the hoist, which has a threaded spindle (12) which is rotatably mounted in a housing (10) and which can be rotated pneumatically in the housing (10) by means of a piston (14) which is longitudinally displaceable pneumatically in the housing (10). 19) and a spindle nut which is firmly connected to the housing (10), the cable drum (17) which is longitudinally displaceable on the threaded spindle (19) being connected to the latter in a rotationally fixed manner, with at least one pawl (24) which can be pivoted against an elastic retaining force about a pivot axis (25) parallel to the threaded spindle (19) from a radially inner rest position to an outer braking position, which pawl points in the direction of rotation when the cable drum (17) is rotating and applies centrifugal force from one of the magnitude of the retention force predetermined speed can be pivoted with its free end into the braking position, with at least one fixed stop element (32) arranged radially at the level of the external braking position, which, together with the pawl (24) in the external braking position, brakes the rotary movement of the cable drum (17) until it stops, characterized in that one end of the threaded spindle (19) protrudes into an externally accessible housing chamber (22) and is connected there to the pivot axis (25) and that the or each stop element (32) is fixedly arranged on the inside of the housing (10). Vorrichtung nach Anspruch 1;
dadurch gekennzeichnet, dass jedes Stoppelement (32) als ins Gehäuse (10) ragende Verdickung an der Gehäusewand ausgebildet ist. Device according to claim 1;
characterized in that each stop element (32) is designed as a thickening projecting into the housing (10) on the housing wall. Vorrichtung nach einem der Ansprüche 1 oder 2,
dadurch gekennzeichnet, dass ein Innenkonus (27) an der Gewindespindel (19) drehfest befestigt ist, auf den ein korrespondierender Außenkonus (23) geschoben ist, und dass die Schwenkachsen (25) am Außenkonus (23) angeordnet sind.Device according to one of claims 1 or 2,
characterized in that an inner cone (27) is attached to the threaded spindle (19) in a rotationally fixed manner, onto which a corresponding outer cone (23) is pushed, and in that the pivot axes (25) are arranged on the outer cone (23). Vorrichtung nach Anspruch 3,
dadurch gekennzeichnet, dass der Innenkonus (27) gegen den Außenkonus (23) in axialer Richtung verspannt ist.Device according to claim 3,
characterized in that the inner cone (27) is braced against the outer cone (23) in the axial direction. Vorrichtung nach Anspruch 4,
dadurch gekennzeichnet, dass der Schwenkwinkel der Klinken (24) begrenzt ist.Device according to claim 4,
characterized in that the pivoting angle of the pawls (24) is limited. Vorrichtung nach einem der Ansprüche 1 - 5,
dadurch gekennzeichnet, dass jede Klinke 24 eine Vertiefung mit einer Anlagefläche (33) zur definierten Anlage an ein Stoppelement (32) aufweist.Device according to one of claims 1-5,
characterized in that each pawl 24 has a recess with a contact surface (33) for defined contact with a stop element (32). Anspruch nach einem der Ansprüche 1 - 6,
dadurch gekennzeichnet, dass die Längsachsen der Klinken (24) jeweils einen Winkel kleiner 150 Grad mit der Ebene einschließen, in der jeweils die zugehörige Schwenkachse (25) und die Gewindespindelachse liegen.Claim according to one of claims 1-6,
characterized in that the longitudinal axes of the pawls (24) each form an angle of less than 150 degrees with the plane in which the associated pivot axis (25) and the threaded spindle axis lie.
EP01250086A 2000-03-17 2001-03-14 Device for limiting the maximum speed of a balancing hoist Expired - Lifetime EP1136423B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10014910 2000-03-17
DE10014910 2000-03-17

Publications (2)

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EP1136423A1 true EP1136423A1 (en) 2001-09-26
EP1136423B1 EP1136423B1 (en) 2005-07-20

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EP01250086A Expired - Lifetime EP1136423B1 (en) 2000-03-17 2001-03-14 Device for limiting the maximum speed of a balancing hoist

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US (1) US6578822B2 (en)
EP (1) EP1136423B1 (en)
JP (1) JP2001316083A (en)
KR (1) KR20010090463A (en)
DE (1) DE50106749D1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10344240A1 (en) * 2003-09-23 2005-05-04 Manfred Josef Wallner Compressed air balancer for lifting and lowering loads, has centrifugal force part for urging emergency brake shoe into braking position when cable drum exceeds given speed
DE10344245A1 (en) * 2003-09-23 2005-05-04 Manfred Josef Wallner Druckluftbalancer
DE102011103320A1 (en) 2011-05-27 2012-11-29 Konecranes Plc Balancer

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KR100402110B1 (en) * 2001-09-12 2003-10-17 주식회사 고려호이스트 safety device for air balancing hoist
US8118143B2 (en) * 2007-11-29 2012-02-21 Axel Brandt Centrifugal emergency brake
WO2010121083A2 (en) 2009-04-15 2010-10-21 Bidare Srinivas R Pneumato-mechanical regenerative power source
TWI483888B (en) * 2012-11-01 2015-05-11 Hiwin Tech Corp Lifting device with a safety descending mechanism
CN103482519B (en) * 2013-09-09 2016-09-21 华南理工大学 A kind of Pneumatic hoist clutch brake
CN114195029A (en) * 2021-11-09 2022-03-18 中建中新建设工程有限公司 Auxiliary mounting device for building electromechanical equipment

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US5553832A (en) * 1993-03-12 1996-09-10 Knight Industries, Inc. Safety device for an air balancing hoist
EP0980844A1 (en) * 1998-08-20 2000-02-23 MANNESMANN Aktiengesellschaft Winch

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US3286989A (en) * 1965-10-19 1966-11-22 Ingersoll Rand Co Balancing hoist
US5553832A (en) * 1993-03-12 1996-09-10 Knight Industries, Inc. Safety device for an air balancing hoist
US5522581A (en) * 1994-01-13 1996-06-04 Zimmerman International Corp. Balancing hoist and material handling system
EP0980844A1 (en) * 1998-08-20 2000-02-23 MANNESMANN Aktiengesellschaft Winch

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10344240A1 (en) * 2003-09-23 2005-05-04 Manfred Josef Wallner Compressed air balancer for lifting and lowering loads, has centrifugal force part for urging emergency brake shoe into braking position when cable drum exceeds given speed
DE10344245A1 (en) * 2003-09-23 2005-05-04 Manfred Josef Wallner Druckluftbalancer
DE10344245B4 (en) * 2003-09-23 2006-07-06 Manfred Josef Wallner Druckluftbalancer
DE10344240B4 (en) * 2003-09-23 2007-10-18 Manfred Josef Wallner Compressed air balancer with brake
DE102011103320A1 (en) 2011-05-27 2012-11-29 Konecranes Plc Balancer
WO2012163505A1 (en) 2011-05-27 2012-12-06 Konecranes Plc Balancer

Also Published As

Publication number Publication date
EP1136423B1 (en) 2005-07-20
KR20010090463A (en) 2001-10-18
DE50106749D1 (en) 2005-08-25
US6578822B2 (en) 2003-06-17
US20010022358A1 (en) 2001-09-20
JP2001316083A (en) 2001-11-13

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