EP1150916B1 - Lifting jack - Google Patents

Lifting jack Download PDF

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Publication number
EP1150916B1
EP1150916B1 EP00993403A EP00993403A EP1150916B1 EP 1150916 B1 EP1150916 B1 EP 1150916B1 EP 00993403 A EP00993403 A EP 00993403A EP 00993403 A EP00993403 A EP 00993403A EP 1150916 B1 EP1150916 B1 EP 1150916B1
Authority
EP
European Patent Office
Prior art keywords
wheel
drive shaft
drive wheel
load
disc
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
EP00993403A
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German (de)
French (fr)
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EP1150916A1 (en
Inventor
Detlef Struck
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.)
Columbus McKinnon Industrial Products GmbH
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Columbus McKinnon Industrial Products GmbH
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Publication of EP1150916A1 publication Critical patent/EP1150916A1/en
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Anticipated expiration legal-status Critical
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66DCAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/02Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/12Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect
    • B66D5/14Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect embodying discs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66DCAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00Portable or mobile lifting or hauling appliances
    • B66D3/12Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable
    • B66D3/16Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable operated by an endless chain passing over a pulley or a sprocket

Definitions

  • the invention relates to a hoist according to the features in the preamble of claim 1.
  • Hoists of the type in question serve in particular the vertical shifting of loads. They include one Drive wheel, which is often designed as a sprocket and by means of a manually manageable round link chain in can be turned in both directions. Instead of one Sprocket can also kick a gear. Furthermore can the drive wheel as a clutch wheel to a motor shaft be trained.
  • a load wheel designed as a chain wheel is via a round link chain with a load suspension device, such as a crane hook.
  • the housing of the hoist is usually one Provide hooks over which there are suitable abutments can be hung.
  • a load pressure brake In the housing are arranged axially one behind the other the drive wheel, a load pressure brake, the load wheel and arranged a gear, the gear often as Planetary gear is formed.
  • the drive wheel is seated at one end of a drive shaft which is the load pressure brake and penetrated the load wheel. At the other end of the The drive shaft is the gearbox, which then is connected to the load wheel to transmit torque.
  • the load pressure brake consists of one Ratchet disc, two lying on either side of the ratchet disc Friction discs and two hinged to the housing Pawls together, under the influence of Leg springs are pressed against the ratchet disc.
  • the Both friction disks kick the ratchet disk once and on the other hand with one fixed to the shaft Thrust washer or the drive wheel in a frictional Connection.
  • the drive wheel is on a thread axially displaceable at one end of the drive shaft.
  • the other end of the drive shaft is with two gears coupled, which in turn is smaller in diameter toothed pinions are connected to a gearwheel, which has an internal toothing in which a pinion fits, which is connected to the load wheel.
  • the load pressure brake does the job of the hoist to keep the load carried at the respective height if that Drive wheel stands still. Then the drive wheel is over the Friction discs and the ratchet disc on the pressure disc pressed. The pawls are in the circumferential Notches in the ratchet disc.
  • the invention is the The task is to create a hoist that is easier built, designed to be less sensitive to noise and less noisy is.
  • the drive wheel is opposite the drive shaft limited rotation, but axially immovable arranged.
  • the drive wheel is also included a brake disc limitedly rotatably coupled, which in turn on a threaded portion of the drive shaft is axially displaceable. Between the brake disc and a thrust washer attached to the housing of the hoist there is a friction disc.
  • the drive wheel rotated clockwise. After a predetermined angle of rotation, over which the drive wheel faces the drive shaft can rotate freely, the free rotation lifted and the drive shaft directly via the handwheel driven without the brake being loaded. by virtue of of the right-hand thread section is used for Rotate the brake disc clockwise from the friction disc released so that the braking effect is canceled becomes.
  • the drive wheel To lower the load, the drive wheel must go counterclockwise be rotated. After a predetermined angle of rotation the drive wheel is coupled to the Brake disc. This is due to the right-hand thread section on this towards the drive wheel axially displaced and the contact with the thrust washer over the friction disc. After that, the Load according to the given angle of rotation between run after the drive wheel and the brake disc and will then braked again by the fact that the under Load rotating drive shaft against the brake disc Friction disc and pulling it against the pressure disc.
  • the particular advantage of the invention is that it compared to the known design much more precise and works quieter. Also from the number of components the hoist according to the invention is simpler.
  • the drive wheel can with a Chain, a rope, a crank or also by means of a Motor driven.
  • the rotatability of the drive wheel on the drive shaft is preferred according to the features of claim 2 with Realized using a socket fixed on the drive shaft.
  • the socket can be pressed onto the drive shaft his.
  • the drive wheel acts with a wing disc connected in a rotationally fixed manner on the drive shaft torque transmitting together. This points the drive wheel has an end projection with its corresponding stop on the wing disc after a predetermined angle of rotation of the drive wheel in Contact and so the wing disc and thus the Drives the drive shaft in rotation.
  • the wing disk is also the bushing on the drive shaft fixed in position.
  • the wing disc is preferably serrated pushed at the end of the drive shaft and using a Mother pressed against the socket, which in turn with a radial collar against a shoulder of the drive shaft is pressed.
  • the drive wheel is then between this radial collar and the end face facing it the wing disc is guided exactly.
  • the wing disc has at least one radially projecting wing that with at least one front projection on the drive wheel interacts.
  • Prefers has the wing disc two offset by 180 ° to each other radial wings. Accordingly, are also on the Front of the drive wheel preferably two projections provided, in particular cast in one piece, with the wings work together.
  • the limited rotating coupling of the drive wheel with the brake disc is preferred with the features of the claim 4 realized.
  • the driving pin summarizes in one, preferably arcuate, segment-like Recess in the side of the drive wheel facing the load wheel. The ends of the recess into which the driving pin engages are then aligned by radially Webs formed. The dragging of the brake disc by the The drive wheel is used to lower the brake disc lift off the thrust washer and thereby the To release the load pressure brake.
  • the brake disc by a Drive wheel supporting spring pressed against the thrust washer.
  • This spring has the main task, a to generate the initial braking torque. This allows the Response time of the load pressure brake can be shortened.
  • 1 denotes a hoist, how it is used for lifting and lowering loads L.
  • the hoist 1 points within a not described in detail Housing G arranged axially one behind the other a drive wheel 2, a load pressure brake 3, a load wheel 4 and a transmission 5.
  • the drive wheel 2 is on one End 6 of a drive shaft 7 is provided and is about this penetrates the load pressure brake 3 and the load wheel 4 Drive shaft 7 with the other end 8 of the drive shaft 7 located, drifting on the load wheel 4 Transmission 5 can be coupled to transmit torque.
  • the drive shaft 7 with a cylindrical Length section 9 provided (Fig. 2), which in a front serration 10 and from the serration 10 merges into an end threaded section 11.
  • a cylindrical Length section 9 On the cylindrical length section 9 is one with a radial collar 12 provided socket 13 and up pressed against a shoulder 14 of the drive shaft 7.
  • the socket 13 is against with the help of a wing disc 15 the shoulder 14 pressed, in that the Threaded portion 11 a nut 16 is rotated over which the wing disc 15 against the socket 13 and this are pressed against the shoulder 14 (Fig. 1, 2 and 4).
  • the wing disk 15 can be seen in particular from FIG. 4. It has a central ring body 17 the 180 ° offset two radially projecting vanes 18 are scheduled.
  • the wings 18 each have an arc curved back area 19 and one in a radial plane extending stop surface 20. Die Stop faces 20 of the wings 18 come with projections 21 in contact, which on the free side 22 of the drive wheel 2 are integrally formed.
  • the drive wheel 2 has an inner hub 23 with which it between the radial collar 12 of the sleeve 13 and the opposite Face 24 of the wing disc 15 sliding is performed (Fig. 2).
  • Internal thread 30 and external thread 31 are right-handed Movement thread trained.
  • the brake disc 29 is on the drive wheel 2 facing away Ring-shaped side and contacted a friction disc 32, which in turn on a Thrust washer 33 is pressed on one component of the housing forming cross plate 34 is fixed (Fig. 2).
  • the system of the brake disc 29 on the Friction disk 32 and this on the pressure disk 33 is supported by a helical compression spring 35 which overlaps an axial connecting piece 36 of the brake disk 29 and engages in an annular recess 37 of the drive wheel 2.
  • the transverse plate 34 of the housing carrying the thrust washer 33 G serves together with one at a parallel distance arranged further cross plate 38 of the rotatable bearing also as a sprocket for a round link chain trained load wheel 4 (Fig. 1 and 2). Camps for the load wheel 4 in the cross plates 34 and 38 are with 39 designated.
  • the load wheel 4 is axially spaced on two mutually cylindrical sliding surfaces 40 the drive shaft 7 mounted relatively rotatable. It sums up with an axial nozzle 41 in a gear 42, which in addition the cross plate 33 is non-rotatably seated on this nozzle 41
  • the gear 42 meshes with two pinions 43 as part of two gears 44, which in turn with mesh a gear end portion 45 of the drive shaft 7.
  • the drive wheel 2 counterclockwise in the direction of arrow PF 3 Figures 1-4 rotated. After a predetermined angle of rotation the drive pin 28 arrives with a web 27 of the drive wheel 2 in contact, so that now the brake disc 29 on the movement thread 31 of the drive shaft 7 displaced and from the friction disc 32 or this is lifted off the thrust washer 33.
  • the load L causes then that a relative rotation of the drive shaft 7 to the drive wheel 2, so that the brake disc 29 again according to arrow PF 2 against the friction disc 32 and thus pulled against the thrust washer 33 and the load L is braked.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Jib Cranes (AREA)
  • Knitting Machines (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Transmission Devices (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)

Abstract

The invention relates to a lifting device with a housing having a drive wheel, a friction disk brake, a load wheel and a gear arranged sequentially in an axial direction inside the housing. The drive shaft extends through the friction disk brake and the load wheel. A torque is transmitted from the drive wheel to the load wheel. The drive wheel cannot move axially on the drive shaft, but can rotate over a limited range relative to the drive shaft. The drive wheel can rotate in a limited fashion relative to a brake disk, which is axially moveable on a threaded section of the drive shaft and can be pressed with the help of a friction disk against a pressure disk that is attached to the housing. The drive wheel forms a component of the friction disk brake.

Description

Die Erfindung betrifft ein Hebezeug gemäß den Merkmalen im Oberbegriff des Anspruchs 1.The invention relates to a hoist according to the features in the preamble of claim 1.

Hebezeuge der in Rede stehenden Art dienen insbesondere der vertikalen Verlagerung von Lasten. Sie umfassen ein Antriebsrad, das häufig als Kettenrad ausgebildet ist und mittels einer manuell handhabbaren Rundgliederkette in beide Richtungen gedreht werden kann. An die Stelle eines Kettenrads kann aber auch ein Zahnrad treten. Des Weiteren kann das Antriebsrad als Kupplungsrad zu einer Motorwelle ausgebildet sein.Hoists of the type in question serve in particular the vertical shifting of loads. They include one Drive wheel, which is often designed as a sprocket and by means of a manually manageable round link chain in can be turned in both directions. Instead of one Sprocket can also kick a gear. Furthermore can the drive wheel as a clutch wheel to a motor shaft be trained.

Das meistens ebenfalls als Kettenrad gestaltete Lastrad ist über eine Rundgliederkette mit einem Lastaufnahmemittel, wie beispielsweise einem Kranhaken, gekuppelt. Mostly also a load wheel designed as a chain wheel is via a round link chain with a load suspension device, such as a crane hook.

Das Gehäuse des Hebezeugs ist in der Regel mit einem Haken versehen, über den es an geeigneten Widerlagern aufgehängt werden kann.The housing of the hoist is usually one Provide hooks over which there are suitable abutments can be hung.

In dem Gehäuse sind in axialer Hintereinanderanordnung das Antriebsrad, eine Lastdruckbremse, das Lastrad und ein Getriebe angeordnet, wobei das Getriebe häufig als Planetengetriebe ausgebildet ist. Das Antriebsrad sitzt an einem Ende einer Antriebswelle, welche die Lastdruckbremse und das Lastrad durchsetzt. Am anderen Ende der Antriebswelle befindet sich das Getriebe, welches dann mit dem Lastrad drehmomentübertragend verbunden ist.In the housing are arranged axially one behind the other the drive wheel, a load pressure brake, the load wheel and arranged a gear, the gear often as Planetary gear is formed. The drive wheel is seated at one end of a drive shaft which is the load pressure brake and penetrated the load wheel. At the other end of the The drive shaft is the gearbox, which then is connected to the load wheel to transmit torque.

Bei einer bekannten Bauart eines wie vorstehend beschriebenen Hebezeugs (Prospekt der Yale Industrial Products GmbH, 5620 Velbert 1 "Yale Flaschenzug/Hand Hoist/Palan à bras Mod.VS") setzt sich die Lastdruckbremse aus einer Klinkenscheibe, zwei beidseits der Klinkenscheibe liegenden Friktionsscheiben sowie zwei an das Gehäuse angelenkten Sperrklinken zusammen, die unter dem Einfluss von Schenkelfedern an die Klinkenscheibe gedrückt werden. Die beiden Friktionsscheiben treten einmal mit der Klinkenscheibe und zum anderen mit einer an der Welle festgelegten Druckscheibe bzw. dem Antriebsrad in eine reibschlüssige Verbindung. Das Antriebsrad ist auf einem Gewinde an einem Ende der Antriebswelle axial verlagerbar. Das andere Ende der Antriebswelle ist mit zwei Zahnrädern gekoppelt, die ihrerseits über im Durchmesser kleinere verzahnte Ritzel mit einem Zahnrad in Verbindung stehen, das eine innere Zahnung aufweist, in das ein Ritzel einfasst, welches mit dem Lastrad verbunden ist.In a known type of one as described above Hoist (prospectus of Yale Industrial Products GmbH, 5620 Velbert 1 "Yale pulley / Hand Hoist / Palan à bras Mod.VS ") the load pressure brake consists of one Ratchet disc, two lying on either side of the ratchet disc Friction discs and two hinged to the housing Pawls together, under the influence of Leg springs are pressed against the ratchet disc. The Both friction disks kick the ratchet disk once and on the other hand with one fixed to the shaft Thrust washer or the drive wheel in a frictional Connection. The drive wheel is on a thread axially displaceable at one end of the drive shaft. The other end of the drive shaft is with two gears coupled, which in turn is smaller in diameter toothed pinions are connected to a gearwheel, which has an internal toothing in which a pinion fits, which is connected to the load wheel.

Die Lastdruckbremse hat die Aufgabe, die von dem Hebezeug getragene Last in der jeweiligen Höhe zu halten, wenn das Antriebsrad stillsteht. Dann ist das Antriebsrad über die Friktionsscheiben und die Klinkenscheibe an die Druckscheibe gedrückt. Die Sperrklinken liegen in den umfangsseitigen Aussparungen der Klinkenscheibe.The load pressure brake does the job of the hoist to keep the load carried at the respective height if that Drive wheel stands still. Then the drive wheel is over the Friction discs and the ratchet disc on the pressure disc pressed. The pawls are in the circumferential Notches in the ratchet disc.

Wird das Antriebsrad in Heberichtung gedreht, so gleiten die Sperrklinken über die Zähne der Klinkenscheibe bis das Antriebsrad zum Stillstand kommt. Dann rasten die Sperrklinken wieder in die Ausnehmungen der Klinkenscheibe ein. Beim Absenken der Last wird das Antriebsrad in die Gegenrichtung gedreht, wodurch es auf dem Bewegungsgewinde der Antriebswelle axial gleitet und der reibschlüssige Kontakt mit den Friktionsscheiben, der Klinkenscheibe und der Druckscheibe aufgehoben wird. Die Last kann sich solange absenken bis die nachdrehende Welle das Axialspiel wieder kompensiert.If the drive wheel is turned in the lifting direction, slide the pawls over the teeth of the pawl disc the drive wheel comes to a standstill. Then they rest Pawls back into the recesses in the ratchet disc on. When the load is lowered, the drive wheel rotated in the opposite direction, causing it to move on the thread the drive shaft slides axially and the frictional contact with the friction discs, the Pawl and the thrust washer is lifted. The The load can drop until the rotating one Shaft compensated the axial play again.

Als verbesserungswürdig hat sich bei der bekannten Bauart herausgestellt, dass die Lastdruckbremse beim Eindringen von Fremdkörpern oder bei dem Bruch der Schraubenfedern versagen kann. Auch sind die Sperrklinkengeräusche in vielen Anwendungsfällen unerwünscht, und zwar insbesondere dort, wo diese Geräusche zu einer Lärmbelästigung führen. Des Weiteren ist die Fertigung der Lastdruckbremse aufwendig, wobei insbesondere der Fertigungsaufwand für die Klinkenscheibe anzuführen ist.Has to be improved with the known design found that the load pressure brake when entering of foreign bodies or if the coil springs break can fail. The pawl noises are also in undesirable in many applications, in particular where that noise causes noise pollution to lead. Furthermore, the production of the load pressure brake complex, in particular the manufacturing effort is to be quoted for the ratchet disc.

Ausgehend vom Stand der Technik liegt der Erfindung die Aufgabe zugrunde, ein Hebezeug zu schaffen, das einfacher aufgebaut, störungsunempfindlicher und geräuschärmer gestaltet ist.Based on the prior art, the invention is the The task is to create a hoist that is easier built, designed to be less sensitive to noise and less noisy is.

Die Lösung dieser Aufgabe besteht nach der Erfindung in den im kennzeichnenden Teil des Anspruchs 1 aufgeführten Merkmalen.According to the invention, this object is achieved in those listed in the characterizing part of claim 1 Features.

Danach ist das Antriebsrad gegenüber der Antriebswelle zwar begrenzt relativ verdrehbar, jedoch axial unverschieblich angeordnet. Außerdem ist das Antriebsrad mit einer Bremsscheibe begrenzt relativ verdrehbar gekuppelt, die ihrerseits auf einem Gewindeabschnitt der Antriebswelle axial verschiebbar ist. Zwischen der Bremsscheibe und einer am Gehäuse des Hebezeugs festgelegten Druckscheibe liegt eine Friktionsscheibe.Then the drive wheel is opposite the drive shaft limited rotation, but axially immovable arranged. The drive wheel is also included a brake disc limitedly rotatably coupled, which in turn on a threaded portion of the drive shaft is axially displaceable. Between the brake disc and a thrust washer attached to the housing of the hoist there is a friction disc.

Soll eine Last angehoben werden, so wird das Antriebsrad im Uhrzeigersinn gedreht. Nach einem vorbestimmten Drehwinkel, über den sich das Antriebsrad gegenüber der Antriebswelle frei drehen kann, wird die freie Drehbewegung aufgehoben und die Antriebswelle direkt über das Handrad angetrieben, ohne dass die Bremse belastet ist. Aufgrund des rechtsgängig gestalteten Gewindeabschnitts wird beim Drehen im Uhrzeigersinn die Bremsscheibe von der Friktionsscheibe gelöst, so dass die Bremswirkung aufgehoben wird.If a load is to be raised, the drive wheel rotated clockwise. After a predetermined angle of rotation, over which the drive wheel faces the drive shaft can rotate freely, the free rotation lifted and the drive shaft directly via the handwheel driven without the brake being loaded. by virtue of of the right-hand thread section is used for Rotate the brake disc clockwise from the friction disc released so that the braking effect is canceled becomes.

Wird die Drehbewegung des Antriebsrads gestoppt, zieht die sich unter dem Einfluss der Last drehende Antriebswelle die Bremsscheibe gegen die Friktionsscheibe und damit gegen die Druckscheibe. Die Last wird blockiert.If the rotation of the drive wheel is stopped, pulls the drive shaft rotating under the influence of the load the brake disc against the friction disc and thus against the thrust washer. The load is blocked.

Zum Absenken der Last muss das Antriebsrad gegen den Uhrzeigersinn gedreht werden. Nach einem vorbestimmten Drehwinkel erfolgt eine Kopplung des Antriebsrads mit der Bremsscheibe. Diese wird aufgrund des rechtsgängigen Gewindeabschnitts auf diesem in Richtung auf das Antriebsrad axial verlagert und der Kontakt mit der Druckscheibe über die Friktionsscheibe aufgehoben. Danach kann die Last entsprechend dem vorgegebenen Drehwinkel zwischen dem Antriebsrad und der Bremsscheibe nachlaufen und wird danach wieder dadurch gebremst, dass die sich unter der Last drehende Antriebswelle die Bremsscheibe gegen die Friktionsscheibe und diese gegen die Druckscheibe zieht. To lower the load, the drive wheel must go counterclockwise be rotated. After a predetermined angle of rotation the drive wheel is coupled to the Brake disc. This is due to the right-hand thread section on this towards the drive wheel axially displaced and the contact with the thrust washer over the friction disc. After that, the Load according to the given angle of rotation between run after the drive wheel and the brake disc and will then braked again by the fact that the under Load rotating drive shaft against the brake disc Friction disc and pulling it against the pressure disc.

Der besondere Vorteil der Erfindung liegt darin, dass sie im Vergleich zur bekannten Bauart wesentlich präziser und leiser funktioniert. Auch von der Anzahl der Bauteile her ist das Hebezeug gemäß der Erfindung einfacher gestaltet.The particular advantage of the invention is that it compared to the known design much more precise and works quieter. Also from the number of components the hoist according to the invention is simpler.

Ferner ist herauszustellen, dass die Antriebswelle und damit das Lastrad direkt über das Antriebsrad angetrieben wird, ohne dass die Lastdruckbremse belastet ist.It should also be pointed out that the drive shaft and so that the load wheel is driven directly via the drive wheel without the load pressure brake being loaded.

Wie beim Stand der Technik kann das Antriebsrad mit einer Kette, einem Seil, einer Kurbel oder auch mittels eines Motors angetrieben sein.As in the prior art, the drive wheel can with a Chain, a rope, a crank or also by means of a Motor driven.

Die Drehbarkeit des Antriebsrads auf der Antriebswelle wird gemäß den Merkmalen des Anspruchs 2 bevorzugt mit Hilfe einer auf der Antriebswelle festgelegten Buchse realisiert. Die Buchse kann auf die Antriebswelle gepresst sein.The rotatability of the drive wheel on the drive shaft is preferred according to the features of claim 2 with Realized using a socket fixed on the drive shaft. The socket can be pressed onto the drive shaft his.

Gemäß den Merkmalen im Anspruch 3 wirkt das Antriebsrad mit einer auf der Antriebswelle drehfest verbundenen Flügelscheibe drehmomentübertragend zusammen. Hierzu weist das Antriebsrad einen stirnseitigen Vorsprung auf, der mit seinem entsprechenden Anschlag an der Flügelscheibe nach einem vorbestimmten Drehwinkel des Antriebsrads in Kontakt gelangt und so die Flügelscheibe und damit die Antriebswelle rotierend mitnimmt.According to the features in claim 3, the drive wheel acts with a wing disc connected in a rotationally fixed manner on the drive shaft torque transmitting together. This points the drive wheel has an end projection with its corresponding stop on the wing disc after a predetermined angle of rotation of the drive wheel in Contact and so the wing disc and thus the Drives the drive shaft in rotation.

Durch die auf die Antriebswelle drehfest aufgeschobene Flügelscheibe ist auch die Buchse auf der Antriebswelle lagefixiert.By the rotatably pushed onto the drive shaft The wing disk is also the bushing on the drive shaft fixed in position.

Die Flügelscheibe wird bevorzugt auf eine Kerbverzahnung am Ende der Antriebswelle geschoben und mit Hilfe einer Mutter gegen die Buchse gepresst, die ihrerseits mit einem radialen Kragen gegen eine Schulter der Antriebswelle gedrückt wird. Das Antriebsrad ist dann zwischen diesem Radialkragen und der diesem zugewandten Stirnseite der Flügelscheibe exakt geführt. Die Flügelscheibe besitzt mindestens einen radial abstehenden Flügel, der mit wenigstens einem stirnseitigen Vorsprung am Antriebsrad zusammenwirkt. Durch das Zusammenwirken des Vorsprungs mit dem Flügel wird die freie Drehbarkeit des Antriebsrads auf der Antriebswelle begrenzt. Sodann kann die Last über das Antriebsrad angehoben werden. Bevorzugt weist die Flügelscheibe zwei um 180° zueinander versetzte radiale Flügel auf. Dementsprechend sind dann auch an der Stirnseite des Antriebsrads bevorzugt zwei Vorsprünge vorgesehen, insbesondere einteilig angegossen, die mit den Flügeln zusammenwirken.The wing disc is preferably serrated pushed at the end of the drive shaft and using a Mother pressed against the socket, which in turn with a radial collar against a shoulder of the drive shaft is pressed. The drive wheel is then between this radial collar and the end face facing it the wing disc is guided exactly. The wing disc has at least one radially projecting wing that with at least one front projection on the drive wheel interacts. By the interaction of the lead with the wing the free rotation of the drive wheel limited on the drive shaft. Then can the load is lifted via the drive wheel. Prefers has the wing disc two offset by 180 ° to each other radial wings. Accordingly, are also on the Front of the drive wheel preferably two projections provided, in particular cast in one piece, with the wings work together.

Die begrenzt drehbewegliche Kopplung des Antriebsrads mit der Bremsscheibe wird bevorzugt mit den Merkmalen des Anspruchs 4 realisiert. Danach ist an der Bremsscheibe ein axial ausgerichteter Mitnahmestift im radialen Abstand zur Antriebswelle vorgesehen. Der Mitnahmestift fasst in eine, vorzugsweise bogenförmig gekrümmte, segmentartige Aussparung in der dem Lastrad zugewandten Seite des Antriebsrads. Die Enden der Aussparung, in die der Mitnahmestift eingreift, werden dann durch radial ausgerichtete Stege gebildet. Die Mitnahme der Bremsscheibe durch das Antriebsrad dient dazu, beim Senken der Last die Bremsscheibe von der Druckscheibe abzuheben und dadurch die Lastdruckbremse zu lösen.The limited rotating coupling of the drive wheel with the brake disc is preferred with the features of the claim 4 realized. After that is on the brake disc axially aligned driving pin at a radial distance provided for the drive shaft. The driving pin summarizes in one, preferably arcuate, segment-like Recess in the side of the drive wheel facing the load wheel. The ends of the recess into which the driving pin engages are then aligned by radially Webs formed. The dragging of the brake disc by the The drive wheel is used to lower the brake disc lift off the thrust washer and thereby the To release the load pressure brake.

In Weiterbildung des erfindungsgemäßen Grundgedankens ist nach Anspruch 5 die Bremsscheibe durch eine sich an dem Antriebsrad abstützende Feder gegen die Druckscheibe gepresst. Diese Feder hat die hauptsächliche Aufgabe, ein anfängliches Bremsmoment zu erzeugen. Hierdurch kann die Ansprechzeit der Lastdruckbremse verkürzt werden. In a development of the basic idea of the invention according to claim 5, the brake disc by a Drive wheel supporting spring pressed against the thrust washer. This spring has the main task, a to generate the initial braking torque. This allows the Response time of the load pressure brake can be shortened.

Die Erfindung ist nachfolgend anhand eines in den Zeichnungen veranschaulichten Ausführungsbeispiels näher erläutert.The invention is based on one in the drawings illustrated embodiment explained in more detail.

Es zeigen:

Figur 1
in der Draufsicht ein Hebezeug;
Figur 2
einen vertikalen Längsschnitt durch die Darstellung der Figur 1 entlang der Linie II-II
Figur 3
einen vertikalen Querschnitt durch die Darstellung der Figur 1 entlang der Linie III-III und
Figur 4
eine Stirnansicht auf die Darstellung der Figur 1 in Richtung des Pfeils IV ohne Deckel.
Show it:
Figure 1
in the top view a hoist;
Figure 2
a vertical longitudinal section through the representation of Figure 1 along the line II-II
Figure 3
a vertical cross section through the representation of Figure 1 along the line III-III and
Figure 4
an end view of the illustration of Figure 1 in the direction of arrow IV without a lid.

In den Figuren 1 bis 4 ist mit 1 ein Hebezeug bezeichnet, wie es zum Heben und Senken von Lasten L zum Einsatz gelangt.1 to 4, 1 denotes a hoist, how it is used for lifting and lowering loads L.

Das Hebezeug 1 weist innerhalb eines nicht näher beschriebenen Gehäuses G in axialer Hintereinanderanordnung ein Antriebsrad 2, eine Lastdruckbremse 3, ein Lastrad 4 und ein Getriebe 5 auf. Das Antriebsrad 2 ist an einem Ende 6 einer Antriebswelle 7 vorgesehen und ist über diese die Lastdruckbremse 3 und das Lastrad 4 durchsetzende Antriebswelle 7 mit dem am anderen Ende 8 der Antriebswelle 7 befindlichen, auf das Lastrad 4 abtreibenden Getriebe 5 drehmomentübertragend koppelbar.The hoist 1 points within a not described in detail Housing G arranged axially one behind the other a drive wheel 2, a load pressure brake 3, a load wheel 4 and a transmission 5. The drive wheel 2 is on one End 6 of a drive shaft 7 is provided and is about this penetrates the load pressure brake 3 and the load wheel 4 Drive shaft 7 with the other end 8 of the drive shaft 7 located, drifting on the load wheel 4 Transmission 5 can be coupled to transmit torque.

An dem das Antriebsrad 2 in Form eines Kettenrads für eine nicht näher veranschaulichte Rundgliederkette tragenden Ende 6 ist die Antriebswelle 7 mit einem zylindrischen Längenabschnitt 9 versehen (Fig. 2), der in eine stirnseitige Kerbverzahnung 10 und von der Kerbverzahnung 10 in einem endseitigen Gewindeabschnitt 11 übergeht. Auf den zylindrischen Längenabschnitt 9 ist eine mit einem radialen Kragen 12 versehene Buchse 13 aufgesetzt und bis an eine Schulter 14 der Antriebswelle 7 herangedrückt. Die Buchse 13 wird mit Hilfe einer Flügelscheibe 15 gegen die Schulter 14 gedrückt, und zwar dadurch, dass auf den Gewindeabschnitt 11 eine Mutter 16 gedreht wird, über welche die Flügelscheibe 15 gegen die Buchse 13 und diese gegen die Schulter 14 anpressbar sind (Fig. 1, 2 und 4).At which the drive wheel 2 in the form of a sprocket for a round link chain not illustrated bearing End 6 is the drive shaft 7 with a cylindrical Length section 9 provided (Fig. 2), which in a front serration 10 and from the serration 10 merges into an end threaded section 11. On the cylindrical length section 9 is one with a radial collar 12 provided socket 13 and up pressed against a shoulder 14 of the drive shaft 7. The socket 13 is against with the help of a wing disc 15 the shoulder 14 pressed, in that the Threaded portion 11 a nut 16 is rotated over which the wing disc 15 against the socket 13 and this are pressed against the shoulder 14 (Fig. 1, 2 and 4).

Die Flügelscheibe 15 ist insbesondere aus der Figur 4 erkennbar. Sie besitzt einen zentralen Ringkörper 17, an dem in 180°-Versetzung zwei radial abstehende Flügel 18 angesetzt sind. Die Flügel 18 besitzen jeweils einen bogenförmig gekrümmten Rückenbereich 19 und eine sich in einer radialen Ebene erstreckende Anschlagfläche 20. Die Anschlagflächen 20 der Flügel 18 gelangen mit Vorsprüngen 21 in Kontakt, welche an die freie Seite 22 des Antriebsrads 2 einstückig angeformt sind.The wing disk 15 can be seen in particular from FIG. 4. It has a central ring body 17 the 180 ° offset two radially projecting vanes 18 are scheduled. The wings 18 each have an arc curved back area 19 and one in a radial plane extending stop surface 20. Die Stop faces 20 of the wings 18 come with projections 21 in contact, which on the free side 22 of the drive wheel 2 are integrally formed.

Das Antriebsrad 2 besitzt eine innere Nabe 23, mit dem es zwischen dem radialen Kragen 12 der Buchse 13 und der gegenüberliegenden Stirnseite 24 der Flügelscheibe 15 gleitend geführt ist (Fig. 2).The drive wheel 2 has an inner hub 23 with which it between the radial collar 12 of the sleeve 13 and the opposite Face 24 of the wing disc 15 sliding is performed (Fig. 2).

Auf der den Vorsprüngen 21 abgewandten Seite 25 besitzt das Antriebsrad 2 drei bogenförmig gekrümmte segmentartige Aussparungen 26 (Fig. 2 und 3), die von drei radialen Stegen 27 begrenzt sind. In eine dieser Aussparungen 26 fasst ein Mitnahmestift 28, der im radialen Abstand zur Antriebswelle 7 in einer Bremsscheibe 29 festgelegt ist. Die Bremsscheibe 29 ist über ein Innengewinde 30 auf einem Außengewinde 31 der Antriebswelle 7 angrenzend an dem zylindrischen Längenabschnitt 9 axial verlagerbar. Has on the side facing away from the projections 21 25 the drive wheel 2 three arcuate segment-like curved Recesses 26 (Figs. 2 and 3) by three radial Webs 27 are limited. In one of these recesses 26 holds a driving pin 28, which is at a radial distance fixed to the drive shaft 7 in a brake disc 29 is. The brake disc 29 is on an internal thread 30 an external thread 31 of the drive shaft 7 adjacent the cylindrical longitudinal section 9 axially displaceable.

Innengewinde 30 und Außengewinde 31 sind als rechtsgängige Bewegungsgewinde ausgebildet.Internal thread 30 and external thread 31 are right-handed Movement thread trained.

Die Bremsscheibe 29 ist auf der dem Antriebsrad 2 abgewandten Seite kreisringförmig ausgebildet und kontaktiert eine Friktionsscheibe 32, welche ihrerseits an eine Druckscheibe 33 gedrückt ist, die an einer Bestandteil des Gehäuses bildenden Querplatte 34 festgelegt ist (Fig. 2). Die Anlage der Bremsscheibe 29 an der Friktionsscheibe 32 und dieser an der Druckscheibe 33 wird durch eine Schraubendruckfeder 35 unterstützt, die einen axialen Stutzen 36 der Bremsscheibe 29 übergreift und in eine Ringausnehmung 37 des Antriebsrads 2 greift.The brake disc 29 is on the drive wheel 2 facing away Ring-shaped side and contacted a friction disc 32, which in turn on a Thrust washer 33 is pressed on one component of the housing forming cross plate 34 is fixed (Fig. 2). The system of the brake disc 29 on the Friction disk 32 and this on the pressure disk 33 is supported by a helical compression spring 35 which overlaps an axial connecting piece 36 of the brake disk 29 and engages in an annular recess 37 of the drive wheel 2.

Die die Druckscheibe 33 tragende Querplatte 34 des Gehäuses G dient zusammen mit einer im parallelen Abstand angeordneten weiteren Querplatte 38 der drehbaren Lagerung des ebenfalls als Kettenrad für eine Rundgliederkette ausgebildeten Lastrads 4 (Fig. 1 und 2). Die Lager für das Lastrad 4 in den Querplatten 34 und 38 sind mit 39 bezeichnet. Das Lastrad 4 ist auf zwei im axialen Abstand zueinander liegenden zylindrischen Gleitflächen 40 der Antriebswelle 7 relativ drehbar gelagert. Es fasst mit einem axialen Stutzen 41 in ein Zahnrad 42, das neben der Querplatte 33 auf diesem Stutzen 41 drehfest sitzt.The transverse plate 34 of the housing carrying the thrust washer 33 G serves together with one at a parallel distance arranged further cross plate 38 of the rotatable bearing also as a sprocket for a round link chain trained load wheel 4 (Fig. 1 and 2). Camps for the load wheel 4 in the cross plates 34 and 38 are with 39 designated. The load wheel 4 is axially spaced on two mutually cylindrical sliding surfaces 40 the drive shaft 7 mounted relatively rotatable. It sums up with an axial nozzle 41 in a gear 42, which in addition the cross plate 33 is non-rotatably seated on this nozzle 41

Wie bei gemeinsamer Betrachtung der Figuren 1 und 2 ersichtlich, kämmt das Zahnrad 42 mit zwei Zahnritzeln 43 als Bestandteil von zwei Zahnrädern 44, die wiederum mit einem Zahnradendabschnitt 45 der Antriebswelle 7 kämmen.As can be seen when viewing Figures 1 and 2 together, The gear 42 meshes with two pinions 43 as part of two gears 44, which in turn with mesh a gear end portion 45 of the drive shaft 7.

Unter der Annahme, dass eine Last L angehoben werden soll, wird das Antriebsrad 2 im Uhrzeigersinn entsprechend dem Pfeil PF der Figuren 1, 3 und 4 gedreht. Da das Antriebsrad 2 sich zunächst frei gegenüber der Antriebswelle 7 auf der Buchse 13 drehen kann, erfolgt eine Relativverdrehung des Antriebsrads 2 zur Antriebswelle 7, bis die Vorsprünge 21 an den Flügeln 18 der Flügelscheibe 15 zur Anlage gelangen. Da die Flügelscheibe 15 über die Kerbverzahnung 10 drehfest auf der Antriebswelle 7 fixiert ist, wird nunmehr auch die Antriebswelle 7 im Uhrzeigersinn gemäß dem Pfeil PF gedreht. Es erfolgt somit eine direkte Drehmomentübertragung vom Antriebsrad 2 über die Antriebswelle 7 und das Getriebe 5 auf das Lastrad 4. Aufgrund der rechtsgängigen Bewegungsgewinde 30, 31 der Bremsscheibe 29 und der Antriebswelle 7 hebt sich bei der Drehung des Antriebsrads 2 im Uhrzeigersinn gemäß den Pfeilen PF die Bremsscheibe 29 entsprechend dem Pfeil PF 1 der Fig. 2 von der Friktionsscheibe 32 und damit diese auch von der Druckscheibe 33 ab. Die Last L kann ohne Bremswirkung angehoben werden.Assuming that a load L will be raised , the drive wheel 2 is clockwise accordingly the arrow PF of Figures 1, 3 and 4 rotated. There the drive wheel 2 is initially free relative to the drive shaft 7 can turn on the socket 13, there is a Relative rotation of the drive wheel 2 to the drive shaft 7, until the projections 21 on the wings 18 of the wing disc 15 get to the system. Since the wing disc 15 on the Serration 10 fixed in rotation on the drive shaft 7 is, the drive shaft 7 is now clockwise rotated according to arrow PF. So it happens direct torque transmission from the drive wheel 2 via the drive shaft 7 and the gear 5 on the load wheel 4. Due to the right-hand movement thread 30, 31 the Brake disc 29 and the drive shaft 7 lifts at Turn the drive wheel 2 clockwise according to the Arrows PF the brake disc 29 according to the arrow PF 1 of FIG. 2 from the friction disc 32 and thus this also from the thrust washer 33. The load L can be without Braking effect can be increased.

Wird das Antriebsrad 2 zum Stillstand gebracht, bewirkt die anhängende Last L eine Drehung des Lastrads 4 in Richtung des Pfeils PF 3, also gegen den Uhrzeigersinn, und damit auch eine Drehung der Antriebswelle 7. Aufgrunddessen wird die Bremsscheibe 29 in Richtung des Pfeils PF 2 gegen die Friktionsscheibe 32 und diese gegen die Druckscheibe 33 gezogen. Die Last L wird in dieser Höhe lagefixiert (Fig. 1-4).If the drive wheel 2 is brought to a standstill, causes the attached load L is a rotation of the load wheel 4 in Direction of arrow PF 3, i.e. counterclockwise, and thus also a rotation of the drive shaft 7. Because of this the brake disc 29 in the direction of Arrow PF 2 against the friction disc 32 and this against the thrust washer 33 pulled. The load L is in this Height fixed (Fig. 1-4).

Soll die Last L abgesenkt werden, so wird das Antriebsrad 2 gegen den Uhrzeigersinn in Richtung des Pfeils PF 3 der Figuren 1-4 gedreht. Nach einem vorbestimmten Drehwinkel gelangt der Mitnahmestift 28 mit einem Steg 27 des Antriebsrads 2 in Kontakt, so dass nunmehr auch die Bremsscheibe 29 auf dem Bewegungsgewinde 31 der Antriebswelle 7 verlagert und von der Friktionsscheibe 32 bzw. diese von der Druckscheibe 33 abgehoben wird. Die Last L bewirkt dann, dass eine Relativverdrehung der Antriebswelle 7 zum Antriebsrad 2 erfolgt, so dass die Bremsscheibe 29 wieder entsprechend dem Pfeil PF 2 gegen die Friktionsscheibe 32 und diese damit gegen die Druckscheibe 33 gezogen und die Last L gebremst wird. If the load L is to be lowered, the drive wheel 2 counterclockwise in the direction of arrow PF 3 Figures 1-4 rotated. After a predetermined angle of rotation the drive pin 28 arrives with a web 27 of the drive wheel 2 in contact, so that now the brake disc 29 on the movement thread 31 of the drive shaft 7 displaced and from the friction disc 32 or this is lifted off the thrust washer 33. The load L causes then that a relative rotation of the drive shaft 7 to the drive wheel 2, so that the brake disc 29 again according to arrow PF 2 against the friction disc 32 and thus pulled against the thrust washer 33 and the load L is braked.

BezugszeichenaufstellungREFERENCE NUMBERS

1 -1 -
Hebezeughoist
2 -2 -
Antriebsraddrive wheel
3 -3 -
LastdruckbremseLoad brake
4 -4 -
Lastradload wheel
5 -5 -
Getriebetransmission
6 -6 -
Ende von 7End of 7
7 -7 -
Antriebswelledrive shaft
8 -8th -
Ende von 7End of 7
9 -9 -
zylindrischer Längenabschnitt von 7cylindrical length section of 7
10 -10 -
Kerbverzahnung in 6Serration in 6
11 -11 -
Gewindeabschnitt in 6Thread section in 6
12 -12 -
radialer Kragen von 13radial collar of 13
13 -13 -
BuchseRifle
14 -14 -
Schulter an 7Shoulder on 7
15 -15 -
Flügelscheibeblade disk
16 -16 -
Muttermother
17 -17 -
Ringkörper von 15Ring body from 15
18 -18 -
Flügel von 15Wing of 15
19 -19 -
Rückenbereich von 18Back area from 18
20 -20 -
Anschlagflächestop surface
21 -21 -
Vorsprünge an 2Projections on 2nd
22 -22 -
Seite von 2Page of 2
23 -23 -
Nabe von 2Hub of 2
24 -24 -
Stirnseite von 15Front of 15
25 -25 -
Seite von 2Page of 2
26 -26 -
Aussparungen in 25Recesses in 25
27 -27 -
Stege zwischen 26Bridges between 26
28 -28 -
Mitnahmestift an 29Driving pin on 29
29 -29 -
Bremsscheibebrake disc
30 -30 -
Innengewinde von 29Internal thread from 29
31 -31 -
Außengewinde von 7Male thread from 7
32 -32 -
Friktionsscheibe friction disc
33 -33 -
Druckscheibethrust washer
34 -34 -
Querplattetransverse plate
35 -35 -
SchraubendruckfederHelical compression spring
36 -36 -
Stutzen von 29Nozzle of 29
37 -37 -
Ringausnehmung in 2Ring recess in 2nd
38 -38 -
Querplattetransverse plate
39 -39 -
Lager für 4Bearing for 4
40 -40 -
Gleitflächen an 7Sliding surfaces on 7
41 -41 -
Stutzen an 4Connection to 4
42 -42 -
Zahnradgear
43 -43 -
Zahnritzelpinions
44 -44 -
Zahnrädergears
45 -45 -
Zahnradendabschnitt von 7Gear end portion of FIG. 7
G -G -
Gehäuse v. 1Housing v. 1
L -L -
Lastload
PF -PF -
Pfeilarrow
PF1 -PF1 -
Pfeilarrow
PF2 -PF2 -
Pfeilarrow
PF3 -PF3 -
Pfeilarrow

Claims (5)

  1. A hoist comprising, inside a housing in axial succession: a drive wheel (2), a load pressure brake (3), a load wheel (4) and a gear (5), wherein the drive wheel (2) provided at one end (6) of a drive shaft (7) is adapted to be coupled in torque-transmitting relationship, via the said drive shaft (7) extending through the load pressure brake (3) and the load wheel (4), to the gear (5) provided at the other end (8) of the drive shaft (7) and outputting to the load wheel (4), characterised in that the drive wheel (2) is mounted on the drive shaft (7) so as to be axially non-displaceable but relatively rotatable to a limited degree and also relatively rotatable to a limited degree with a brake disc (29) forming part of the load pressure brake (3) and axially displaceable on a screwthreaded portion (31) of the drive shaft (7) and pressable, with the interposition of a friction disc (32), against a pressure disc (33) fixed on the housing.
  2. A hoist according to claim 1, characterised in that the drive wheel (2) is mounted rotatably on a bush (13) fixed on the drive shaft (7).
  3. A hoist according to claim 1 or 2, characterised in that the drive wheel (2) has an end-face projection (21) co-operating in torque-transmitting relationship with a vane disc (15) connected non-rotatably to the drive shaft (7).
  4. A hoist according to any one of claims 1 to 3, characterised in that the brake disc (29) has an axially aligned driver pin (28) engaging relatively displaceably in a segment-like recess (26) of the drive wheel (2) in the side (25) facing the load wheel (4).
  5. A hoist according to any one of claims 1 to 4, characterised in that the brake disc (29) is pressed against the pressure disc (33) by a spring (35) bearing against the drive wheel (2).
EP00993403A 1999-12-13 2000-12-02 Lifting jack Expired - Lifetime EP1150916B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19959999 1999-12-13
DE19959999A DE19959999C2 (en) 1999-12-13 1999-12-13 Hoist
PCT/DE2000/004325 WO2001044100A1 (en) 1999-12-13 2000-12-02 Lifting jack

Publications (2)

Publication Number Publication Date
EP1150916A1 EP1150916A1 (en) 2001-11-07
EP1150916B1 true EP1150916B1 (en) 2004-07-14

Family

ID=7932435

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00993403A Expired - Lifetime EP1150916B1 (en) 1999-12-13 2000-12-02 Lifting jack

Country Status (17)

Country Link
US (1) US6527253B2 (en)
EP (1) EP1150916B1 (en)
JP (1) JP2003516918A (en)
KR (1) KR100417577B1 (en)
CN (1) CN1148314C (en)
AT (1) ATE271017T1 (en)
AU (1) AU759668B2 (en)
BR (1) BR0008168A (en)
CA (1) CA2363082C (en)
CZ (1) CZ291908B6 (en)
DE (2) DE19959999C2 (en)
ES (1) ES2222274T3 (en)
HK (1) HK1046126A1 (en)
PL (1) PL202461B1 (en)
TW (1) TW555686B (en)
WO (1) WO2001044100A1 (en)
ZA (1) ZA200106542B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4693506B2 (en) * 2005-06-03 2011-06-01 株式会社キトー Hoisting tractor
DE102010016267B4 (en) * 2010-03-31 2018-01-11 Heinrich De Fries Gmbh Hand operated chain hoist
KR101373133B1 (en) * 2011-12-21 2014-03-13 주식회사 두산이노텍 mechanical brake of hoist with multipul spiral and processing method multipul spiral
KR101376047B1 (en) * 2012-05-10 2014-03-18 주식회사 코브 인터내셔날 Brake assembly for a self-retracting lifeline
PL234340B1 (en) * 2018-03-08 2020-02-28 Inst Techniki Gorniczej Komag Mechanical brake with the possibility of two-directional starting movement of a drive shaft
DE102019120036A1 (en) 2019-07-24 2021-01-28 Columbus Mckinnon Industrial Products Gmbh Hoist
CN111302255B (en) * 2020-02-11 2021-10-22 三门核电有限公司 Chain block capable of electrically pulling zipper
DE102021101058A1 (en) 2021-01-19 2022-07-21 Columbus Mckinnon Industrial Products Gmbh hoist

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US1572001A (en) * 1925-03-05 1926-02-09 Wright Mfg Company Chain hoist
US1876954A (en) * 1929-04-25 1932-09-13 J P Johnson Engineering Compan Hoist
US1993744A (en) * 1934-06-02 1935-03-12 Morison Inc Automatic two-way brake for hoists
US2403462A (en) * 1944-02-25 1946-07-09 Yale & Towne Mfg Co Chain hoist
US2417492A (en) * 1944-07-21 1947-03-18 Hinchcliffe Sidney Lifting and pulling mechanism
US2548846A (en) * 1947-11-01 1951-04-10 Columbus Mckinnon Chain Corp Chain hoist
FR1193419A (en) * 1957-03-28 1959-11-03 Schiess Defries Hebezeug Und K Brake operating under load pressure for hoists, winches and other lifting devices
US3090601A (en) * 1960-11-29 1963-05-21 Columbus Mckinnon Corp Hoist brake
JPS5227808Y2 (en) * 1973-05-14 1977-06-24
DE3507724A1 (en) * 1985-03-05 1986-09-25 Heinrich de Fries GmbH, 4000 Düsseldorf Load brake
JP2597289B2 (en) * 1993-07-02 1997-04-02 象印チエンブロック株式会社 Manual chain block
AU666078B2 (en) * 1993-07-02 1996-01-25 Elephant Chain Block Company Limited Manual chain block
US5586751A (en) * 1993-09-14 1996-12-24 Elephant Chain Block Company, Ltd. Manual chain block
JP2919810B2 (en) * 1997-05-15 1999-07-19 象印チエンブロック株式会社 Manual chain block
US6032928A (en) * 1997-05-15 2000-03-07 Elephant Chain Block Co., Ltd. Hand operated chain block having improved hand wheel
JP2919809B2 (en) * 1997-05-15 1999-07-19 象印チエンブロック株式会社 Manual chain block

Also Published As

Publication number Publication date
CZ291908B6 (en) 2003-06-18
CZ20012915A3 (en) 2002-03-13
ATE271017T1 (en) 2004-07-15
ZA200106542B (en) 2002-11-08
ES2222274T3 (en) 2005-02-01
BR0008168A (en) 2002-01-22
US20020027222A1 (en) 2002-03-07
AU759668B2 (en) 2003-04-17
CN1148314C (en) 2004-05-05
WO2001044100A1 (en) 2001-06-21
PL202461B1 (en) 2009-06-30
CA2363082A1 (en) 2001-06-21
KR100417577B1 (en) 2004-02-05
HK1046126A1 (en) 2002-12-27
AU2828001A (en) 2001-06-25
TW555686B (en) 2003-10-01
DE50007068D1 (en) 2004-08-19
CA2363082C (en) 2004-11-23
PL349263A1 (en) 2002-07-01
DE19959999C2 (en) 2001-10-11
CN1340026A (en) 2002-03-13
DE19959999A1 (en) 2001-07-05
JP2003516918A (en) 2003-05-20
KR20010102058A (en) 2001-11-15
EP1150916A1 (en) 2001-11-07
US6527253B2 (en) 2003-03-04

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