EP1150916A1 - Lifting jack - Google Patents

Lifting jack

Info

Publication number
EP1150916A1
EP1150916A1 EP00993403A EP00993403A EP1150916A1 EP 1150916 A1 EP1150916 A1 EP 1150916A1 EP 00993403 A EP00993403 A EP 00993403A EP 00993403 A EP00993403 A EP 00993403A EP 1150916 A1 EP1150916 A1 EP 1150916A1
Authority
EP
European Patent Office
Prior art keywords
wheel
drive shaft
load
drive wheel
drive
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
EP00993403A
Other languages
German (de)
French (fr)
Other versions
EP1150916B1 (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
Original Assignee
Columbus McKinnon Industrial Products 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 Columbus McKinnon Industrial Products GmbH filed Critical Columbus McKinnon Industrial Products GmbH
Publication of EP1150916A1 publication Critical patent/EP1150916A1/en
Application granted granted Critical
Publication of EP1150916B1 publication Critical patent/EP1150916B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • B66D5/12—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect
    • B66D5/14—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect embodying discs
    • 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
    • B66D3/12—Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable
    • B66D3/16—Chain 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 are used in particular for the vertical displacement of loads. They comprise a drive wheel, which is often designed as a chain wheel and can be rotated in both directions by means of a manually operable round link chain. A sprocket can also replace a sprocket. Furthermore, the drive wheel can be designed as a clutch wheel for a motor shaft.
  • the load wheel which is usually also designed as a chain wheel, is coupled to a load suspension device, such as a crane hook, via a round link chain.
  • a load suspension device such as a crane hook
  • the housing of the hoist is usually provided with a hook, via which it can be hung on suitable abutments.
  • the drive wheel, a load pressure brake, the load wheel and a gear are arranged in the housing in an axial arrangement one behind the other, the gear often being designed as a planetary gear.
  • the drive wheel sits at one end of a drive shaft which passes through the load pressure brake and the loading wheel.
  • the gearbox At the other end of the drive shaft is the gearbox, which is then connected to the load wheel in a torque-transmitting manner.
  • the load pressure brake consists of a ratchet disc, two friction discs on both sides of the ratchet disc and two pawls articulated to the housing, which are pressed against the pawl disc under the influence of leg springs.
  • the two friction disks enter into a frictional connection on the one hand with the thumb disk and on the other hand with a thrust washer attached to the shaft or the drive wheel.
  • the drive wheel is axially displaceable on a thread at one end of the drive shaft.
  • the other end of the drive shaft is coupled to two toothed wheels, which in turn are connected by means of toothed pinions of smaller diameter to a toothed wheel which has an internal toothing, into which a pinion engages, which is connected to the load wheel.
  • the load pressure brake has the task of holding the load carried by the hoist at the respective height when the drive wheel is stationary. Then the drive wheel is connected to the pressure plate via the friction plates and the ratchet plate disc pressed. The pawls are located in the recesses on the u-side of the ratchet disc.
  • the pawls slide over the teeth of the ratchet disc until the drive wheel comes to a standstill. Then the pawls snap back into the recesses in the ratchet disc.
  • the drive wheel is turned in the opposite direction, as a result of which it slides axially on the movement thread of the drive shaft and the frictional contact with the friction disks, the ratchet disk and the pressure disk is eliminated. The load can drop until the rotating shaft compensates for the axial play.
  • the load pressure brake can fail to penetrate if foreign bodies penetrate or the coil springs break.
  • the pawl noises are undesirable in many applications, particularly where these noises lead to noise pollution.
  • the production of the load pressure brake is complex, the production effort for the ratchet disc being mentioned in particular.
  • the invention has for its object to provide a hoist that is simple in construction, less sensitive to interference and designed with less noise.
  • the drive wheel can be rotated relative to the drive shaft to a limited extent, but axially non-rotatable slidably arranged.
  • the drive wheel is limitedly rotatably coupled with a brake disc, which in turn is axially displaceable on a threaded portion of the drive shaft.
  • a friction disc is located between the brake disc and a pressure disc attached to the housing of the hoist.
  • the drive wheel If a load is to be lifted, the drive wheel is turned clockwise. After a predetermined angle of rotation, by means of which the drive wheel can rotate freely with respect to the drive shaft, the free rotary movement is canceled and the drive shaft is driven directly via the handwheel, without the brake being loaded. Due to the right-handed thread section, the brake disc is released from the friction disc when turning clockwise, so that the braking effect is canceled.
  • the drive wheel can be driven with a chain, a rope, a crank or also by means of a motor.
  • the rotatability of the drive wheel on the drive shaft is preferably realized with the aid of a bushing fixed on the drive shaft.
  • the socket can be pressed onto the drive shaft.
  • the drive wheel cooperates with a wing disc connected in a torque-proof manner on the drive shaft.
  • the drive wheel has an end-side projection which comes into contact with its corresponding stop on the wing disk after a predetermined rotation angle of the drive wheel and thus rotatably entrains the wing disk and thus the drive shaft.
  • the bushing is also fixed in position on the drive shaft by means of the vane disk which is pushed onto the drive shaft in a rotationally fixed manner.
  • the wing disc is preferably pushed onto a serration at the end of the drive shaft and with the help of a
  • the wing disk has at least one radially projecting wing which interacts with at least one front projection on the drive wheel. The interaction of the projection with the wing limits the free rotatability of the drive wheel on the drive shaft. The load can then be raised using the drive wheel.
  • the wing disk preferably has two radial wings which are offset from one another by 180 °. Accordingly, two projections are preferably provided on the end face of the drive wheel, in particular cast in one piece, which cooperate with the wings.
  • the limited rotationally movable coupling of the drive wheel to the brake disc is preferably realized with the features of claim 4.
  • An axially aligned driving pin is then provided on the brake disc at a radial distance from the drive shaft.
  • the driving pin fits into a segment-like recess, which is preferably curved in an arc shape, in the side of the drive wheel facing the load wheel.
  • the ends of the recess into which the driving pin engages are then formed by radially aligned webs.
  • Driving the brake disc with the drive wheel serves to lift the brake disc from the pressure disc when the load is lowered and thereby release the load pressure brake.
  • the brake disk is pressed against the pressure disk by a spring supported on the drive wheel.
  • the main task of this spring is to generate an initial braking torque.
  • the response time of the load pressure brake can be shortened.
  • Figure 1 is a top view of a hoist
  • Figure 2 is a vertical longitudinal section through the representation of Figure 1 along the line II-II;
  • Figure 4 is an end view of the representation of Figure 1 in the direction of arrow IV without a lid.
  • 1 denotes a hoist as used for lifting and lowering loads L.
  • the hoist 1 has a drive wheel 2, a load pressure brake 3, a load wheel 4 and a transmission 5 within a housing G (not described in more detail) in an axial arrangement one behind the other.
  • the drive wheel 2 is provided at one end 6 of a drive shaft 7 and can be coupled via this drive shaft 7 passing through the load pressure brake 3 and the load wheel 4 to the transmission 5 located at the other end 8 of the drive shaft 7 and driving on the load wheel 4 and transmitting torque.
  • the drive shaft 7 is provided with a cylindrical length section 9 (FIG. 2) which fits into a front serration 10 and the serration 10 merges into an end threaded portion 11.
  • a bushing 13 provided with a radial collar 12 is placed on the cylindrical longitudinal section 9 and pressed up to a shoulder 14 of the drive shaft 7. The bushing 13 is pressed against the shoulder 14 with the aid of a wing disk 15, specifically by turning a nut 16 onto the threaded section 11, by means of which the wing disk 15 can be pressed against the bushing 13 and this 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 annular body 17 on which two radially projecting vanes 18 are attached in a 180 ° offset.
  • the wings 18 each have an arcuate curved back region 19 and a stop surface 20 extending in a radial plane.
  • the stop surfaces 20 of the wings 18 come into contact with projections 21 which are integrally formed on the free side 22 of the drive wheel 2.
  • the drive wheel 2 has an inner hub 23, with which it is slidably guided between the radial collar 12 of the bushing 13 and the opposite end face 24 of the wing disk 15 (FIG. 2).
  • the drive wheel 2 On the side 25 facing away from the projections 21, the drive wheel 2 has three curved segment-like recesses 26 (FIGS. 2 and 3) which are delimited by three radial webs 27.
  • the brake disc 29 is axially displaceable via an internal thread 30 on an external thread 31 of the drive shaft 7 adjacent to the cylindrical length section 9. Internal thread 30 and external thread 31 are designed as right-hand motion threads.
  • the brake disc 29 is annular on the side facing away from the drive wheel 2 and contacts a friction disc 32, which in turn is pressed against a pressure disc 33 which is fixed to a transverse plate 34 forming part of the housing (FIG. 2).
  • the contact of the brake disk 29 on the friction disk 32 and this on the pressure disk 33 is supported by a helical compression spring 35 which engages over an axial connection 36 of the brake disk 29 and engages in an annular recess 37 in the drive wheel 2.
  • the transverse plate 34 of the housing G carrying the thrust washer 33, together with a further transverse plate 38 arranged at a parallel distance, serves for the rotatable mounting of the load wheel 4 (FIGS. 1 and 2) which is also designed as a chain wheel for a round link chain.
  • the bearings for the load wheel 4 in the cross plates 34 and 38 are designated 39.
  • the load wheel 4 is relatively rotatably mounted on two cylindrical sliding surfaces 40 of the drive shaft 7 which are axially spaced from one another. It fits with an axial socket 41 in a gear 42, which is seated on the socket 41 in a rotationally fixed manner next to the cross plate 38.
  • gear 42 meshes with two pinions 43 as a component of two gear wheels 44, which in turn mesh with a gear end section 45 of drive shaft 7.
  • the drive wheel 2 is rotated clockwise in accordance with the arrow PF of FIGS. 1, 3 and 4. Since the drive wheel 2 can initially rotate freely with respect to the drive shaft 7 on the bush 13, one is carried out 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 come to rest. Since the wing disc 15 is fixed on the drive shaft 7 in a rotationally fixed manner via the serration 10, the drive shaft 7 is now also rotated clockwise according to the arrow PF. There is thus a direct torque transmission from the drive wheel 2 via the drive shaft 7 and the gear 5 to the load wheel 4.
  • the attached load L causes the load wheel 4 to rotate in the direction of the arrow PF 3, that is to say counterclockwise, and thus also a rotation of the drive shaft 7.
  • the brake disk 29 becomes in the direction of the arrow PF 2 pulled against the friction plate 32 and this against the pressure plate 33.
  • the load L is fixed in position at this height (Fig. 1-4).
  • the drive wheel 2 is rotated counterclockwise in the direction of the arrow PF 3 in FIGS. 1-4.
  • the driving pin 28 comes into contact with a web 27 of the drive wheel 2, so that the brake disk 29 is now also displaced on the movement thread 31 of the drive shaft 7 and is lifted off the friction disk 32 or the pressure disk 33.
  • the load L then causes the drive shaft 7 to rotate relative to the drive wheel 2, so that the brake disc 29 again corresponds to the friction according to the arrow PF 2. Washer 32 and this pulled against the thrust washer 33 and the load L is braked.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Knitting Machines (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Jib Cranes (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

Hebezeug hoist
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 Weite- ren kann das Antriebsrad als Kupplungsrad zu einer Motorwelle ausgebildet sein.Hoists of the type in question are used in particular for the vertical displacement of loads. They comprise a drive wheel, which is often designed as a chain wheel and can be rotated in both directions by means of a manually operable round link chain. A sprocket can also replace a sprocket. Furthermore, the drive wheel can be designed as a clutch wheel for a motor shaft.
Das meistens ebenfalls als Kettenrad gestaltete Lastrad ist über eine Rundgliederkette mit einem Lastaufnahmemittel, wie beispielsweise einem Kranhaken, gekuppelt. Das Gehäuse des Hebezeugs ist in der Regel mit einem Haken versehen, über den es an geeigneten Widerlagern aufgehängt werden kann.The load wheel, which is usually also designed as a chain wheel, is coupled to a load suspension device, such as a crane hook, via a round link chain. The housing of the hoist is usually provided with a hook, via which it can be hung on suitable abutments.
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 Laεtrad durchsetzt. Am anderen Ende der Antriebswelle befindet sich das Getriebe, welches dann mit dem Lastrad drehmomentübertragend verbunden ist.The drive wheel, a load pressure brake, the load wheel and a gear are arranged in the housing in an axial arrangement one behind the other, the gear often being designed as a planetary gear. The drive wheel sits at one end of a drive shaft which passes through the load pressure brake and the loading wheel. At the other end of the drive shaft is the gearbox, which is then connected to the load wheel in a torque-transmitting manner.
Bei einer bekannten Bauart eines wie vorstehend beschriebenen Hebezeugs (Prospekt der Yale Industrial Products GmbH, 5620 Velbert 1 "Yale Flaschenzug/Hand Hoist/Palan ä 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 Klin- kenscheibe 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 ein- fasst, welches mit dem Lastrad verbunden ist.In a known type of hoist as described above (brochure from Yale Industrial Products GmbH, 5620 Velbert 1 "Yale pulley / Hand Hoist / Palan ä bras Mod.VS"), the load pressure brake consists of a ratchet disc, two friction discs on both sides of the ratchet disc and two pawls articulated to the housing, which are pressed against the pawl disc under the influence of leg springs. The two friction disks enter into a frictional connection on the one hand with the thumb disk and on the other hand with a thrust washer attached to the shaft or the drive wheel. The drive wheel is axially displaceable on a thread at one end of the drive shaft. The other end of the drive shaft is coupled to two toothed wheels, which in turn are connected by means of toothed pinions of smaller diameter to a toothed wheel which has an internal toothing, into which a pinion engages, 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 Druck- scheibe gedrückt. Die Sperrklinken liegen in den u fangs- seitigen Aussparungen der Klinkenscheibe.The load pressure brake has the task of holding the load carried by the hoist at the respective height when the drive wheel is stationary. Then the drive wheel is connected to the pressure plate via the friction plates and the ratchet plate disc pressed. The pawls are located in the recesses on the u-side of 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 reibschlüsεige 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, the pawls slide over the teeth of the ratchet disc until the drive wheel comes to a standstill. Then the pawls snap back into the recesses in the ratchet disc. When the load is lowered, the drive wheel is turned in the opposite direction, as a result of which it slides axially on the movement thread of the drive shaft and the frictional contact with the friction disks, the ratchet disk and the pressure disk is eliminated. The load can drop until the rotating shaft compensates for the axial play.
Als verbesserungswürdig hat sich bei der bekannten Bauart herausgestellt, dasε 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.In the known design, it has been shown that the load pressure brake can fail to penetrate if foreign bodies penetrate or the coil springs break. The pawl noises are undesirable in many applications, particularly where these noises lead to noise pollution. Furthermore, the production of the load pressure brake is complex, the production effort for the ratchet disc being mentioned in particular.
Ausgehend vom Stand der Technik liegt der Erfindung die Aufgabe zugrunde, ein Hebezeug zu schaffen, das einfacher aufgebaut, störungsunempfindlicher und geräuschärmer gestaltet ist.Starting from the prior art, the invention has for its object to provide a hoist that is simple in construction, less sensitive to interference and designed with less noise.
Die Lösung dieser Aufgabe besteht nach der Erfindung in den im kennzeichnenden Teil des Anspruchs 1 aufgeführten Merkmalen .This object is achieved according to the invention in the features listed in the characterizing part of claim 1.
Danach ist das Antriebsrad gegenüber der Antriebswelle zwar begrenzt relativ verdrehbar, jedoch axial unver- schieblich 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.Thereafter, the drive wheel can be rotated relative to the drive shaft to a limited extent, but axially non-rotatable slidably arranged. In addition, the drive wheel is limitedly rotatably coupled with a brake disc, which in turn is axially displaceable on a threaded portion of the drive shaft. A friction disc is located between the brake disc and a pressure disc attached to the housing of the hoist.
Soll eine Last angehoben werden, so wird das Antriebsrad im Uhrzeigersinn gedreht. Nach einem vorbestimmten Drehwinkel, über den sich das Antriebsrad gegenüber der An- triebswelle 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 Frik- tionsscheibe gelöst, so dass die Bremswirkung aufgehoben wird .If a load is to be lifted, the drive wheel is turned clockwise. After a predetermined angle of rotation, by means of which the drive wheel can rotate freely with respect to the drive shaft, the free rotary movement is canceled and the drive shaft is driven directly via the handwheel, without the brake being loaded. Due to the right-handed thread section, the brake disc is released from the friction disc when turning clockwise, so that the braking effect is canceled.
Wird die Drehbewegung des Antriebsrads gestoppt, zieht die sich unter dem Einfluss der Last drehende Antriebswelle die Bremsscheibe gegen die Friktionsscheibe und da- mit gegen die Druckscheibe. Die Last wird blockiert.If the rotation of the drive wheel is stopped, the drive shaft rotating under the influence of the load pulls the brake disc against the friction disc and thus against the pressure disc. The load is blocked.
Zum Absenken der Last uss das Antriebsrad gegen den Uhrzeigersinn gedreht werden. Nach einem vorbestimmten Drehwinkel erfolgt eine Kopplung des Antriebsrads mit der Bremsscheibe. Diese wird aufgrund des rechtsgängigen Ge- windeabschnitts 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. 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.To lower the load, turn the drive wheel counterclockwise. After a predetermined angle of rotation, the drive wheel is coupled to the brake disc. Due to the right-hand thread section, this is axially displaced in the direction of the drive wheel and the contact with the pressure disc via the friction disc is canceled. The load can then run according to the predetermined angle of rotation between the drive wheel and the brake disc and is then braked again by the drive shaft rotating under the load pulling the brake disc against the friction disc and this against the pressure disc. The particular advantage of the invention is that it works much more precisely and quietly compared to the known design. The hoist according to the invention is also simpler in terms of the number of components.
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 thus the load wheel are 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 be driven with a chain, a rope, a crank or also by means of a motor.
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 preferably realized with the aid of a bushing fixed on the drive shaft. The socket can be pressed onto the drive shaft.
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 vorbestimraten 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 cooperates with a wing disc connected in a torque-proof manner on the drive shaft. For this purpose, the drive wheel has an end-side projection which comes into contact with its corresponding stop on the wing disk after a predetermined rotation angle of the drive wheel and thus rotatably entrains the wing disk and thus the drive shaft.
Durch die auf die Antriebswelle drehfest aufgeschobene Flügelscheibe ist auch die Buchse auf der Antriebswelle lagefixiert .The bushing is also fixed in position on the drive shaft by means of the vane disk which is pushed onto the drive shaft in a rotationally fixed manner.
Die Flügelscheibe wird bevorzugt auf eine Kerbverzahnung am Ende der Antriebswelle geschoben und mit Hilfe einerThe wing disc is preferably pushed onto a serration at the end of the drive shaft and with the help of a
Mutter gegen die Buchse gepresst, die ihrerseits mit einem radialen Kragen gegen eine Schulter der Antriebs- welle 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.Nut pressed against the bushing, which in turn has a radial collar against a shoulder of the drive wave is pressed. The drive wheel is then guided exactly between this radial collar and the end face of the wing disk facing it. The wing disk has at least one radially projecting wing which interacts with at least one front projection on the drive wheel. The interaction of the projection with the wing limits the free rotatability of the drive wheel on the drive shaft. The load can then be raised using the drive wheel. The wing disk preferably has two radial wings which are offset from one another by 180 °. Accordingly, two projections are preferably provided on the end face of the drive wheel, in particular cast in one piece, which cooperate with the wings.
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 rotationally movable coupling of the drive wheel to the brake disc is preferably realized with the features of claim 4. An axially aligned driving pin is then provided on the brake disc at a radial distance from the drive shaft. The driving pin fits into a segment-like recess, which is preferably curved in an arc shape, in the side of the drive wheel facing the load wheel. The ends of the recess into which the driving pin engages are then formed by radially aligned webs. Driving the brake disc with the drive wheel serves to lift the brake disc from the pressure disc when the load is lowered and thereby 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. Die Erfindung ist nachfolgend anhand eines in den Zeichnungen veranschaulichten Ausführungsbeispiels näher erläutert .In a further development of the basic idea of the invention, the brake disk is pressed against the pressure disk by a spring supported on the drive wheel. The main task of this spring is to generate an initial braking torque. As a result, the response time of the load pressure brake can be shortened. The invention is explained in more detail below on the basis of an exemplary embodiment illustrated in the drawings.
Es zeigen:Show it:
Figur 1 in der Draufsicht ein Hebezeug;Figure 1 is a top view of a hoist;
Figur 2 einen vertikalen Längsschnitt durch die Darstellung der Figur 1 entlang der Linie II-II;Figure 2 is a vertical longitudinal section through the representation of Figure 1 along the line II-II;
Figur 3 einen vertikalen Querschnitt durch die Darstellung der Figur 1 entlang der Linie III- III und3 shows a vertical cross section through the representation of Figure 1 along the line III-III and
Figur 4 eine Stirnansicht auf die Darstellung der Figur 1 in Richtung des Pfeils IV ohne Deckel.Figure 4 is an end view of the representation 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 ge- langt.In FIGS. 1 to 4, 1 denotes a hoist as 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 has a drive wheel 2, a load pressure brake 3, a load wheel 4 and a transmission 5 within a housing G (not described in more detail) in an axial arrangement one behind the other. The drive wheel 2 is provided at one end 6 of a drive shaft 7 and can be coupled via this drive shaft 7 passing through the load pressure brake 3 and the load wheel 4 to the transmission 5 located at the other end 8 of the drive shaft 7 and driving on the load wheel 4 and transmitting 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 the end 6 carrying the drive wheel 2 in the form of a sprocket for a round link chain (not illustrated in any more detail), the drive shaft 7 is provided with a cylindrical length section 9 (FIG. 2) which fits into a front serration 10 and the serration 10 merges into an end threaded portion 11. A bushing 13 provided with a radial collar 12 is placed on the cylindrical longitudinal section 9 and pressed up to a shoulder 14 of the drive shaft 7. The bushing 13 is pressed against the shoulder 14 with the aid of a wing disk 15, specifically by turning a nut 16 onto the threaded section 11, by means of which the wing disk 15 can be pressed against the bushing 13 and this 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 bo- genförmig 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 annular body 17 on which two radially projecting vanes 18 are attached in a 180 ° offset. The wings 18 each have an arcuate curved back region 19 and a stop surface 20 extending in a radial plane. The stop surfaces 20 of the wings 18 come into contact with projections 21 which are integrally formed on the free side 22 of the drive wheel 2.
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 is slidably guided between the radial collar 12 of the bushing 13 and the opposite end face 24 of the wing disk 15 (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. Innengewinde 30 und Außengewinde 31 sind als rechtsgängige Bewegungsgewinde ausgebildet.On the side 25 facing away from the projections 21, the drive wheel 2 has three curved segment-like recesses 26 (FIGS. 2 and 3) which are delimited by three radial webs 27. A drive pin 28, which is fixed at a radial distance from the drive shaft 7 in a brake disk 29, fits into one of these recesses 26. The brake disc 29 is axially displaceable via an internal thread 30 on an external thread 31 of the drive shaft 7 adjacent to the cylindrical length section 9. Internal thread 30 and external thread 31 are designed as right-hand motion threads.
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 annular on the side facing away from the drive wheel 2 and contacts a friction disc 32, which in turn is pressed against a pressure disc 33 which is fixed to a transverse plate 34 forming part of the housing (FIG. 2). The contact of the brake disk 29 on the friction disk 32 and this on the pressure disk 33 is supported by a helical compression spring 35 which engages over an axial connection 36 of the brake disk 29 and engages in an annular recess 37 in 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 Ab- stand 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 38 auf diesem Stutzen 41 drehfest sitzt.The transverse plate 34 of the housing G carrying the thrust washer 33, together with a further transverse plate 38 arranged at a parallel distance, serves for the rotatable mounting of the load wheel 4 (FIGS. 1 and 2) which is also designed as a chain wheel for a round link chain. The bearings for the load wheel 4 in the cross plates 34 and 38 are designated 39. The load wheel 4 is relatively rotatably mounted on two cylindrical sliding surfaces 40 of the drive shaft 7 which are axially spaced from one another. It fits with an axial socket 41 in a gear 42, which is seated on the socket 41 in a rotationally fixed manner next to the cross plate 38.
Wie bei gemeinsamer Betrachtung der Figuren 1 und 2 er- sichtlich, 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 FIGS. 1 and 2 together, gear 42 meshes with two pinions 43 as a component of two gear wheels 44, which in turn mesh with a gear end section 45 of 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 fi- xiert 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 is to be raised, the drive wheel 2 is rotated clockwise in accordance with the arrow PF of FIGS. 1, 3 and 4. Since the drive wheel 2 can initially rotate freely with respect to the drive shaft 7 on the bush 13, one is carried out 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 come to rest. Since the wing disc 15 is fixed on the drive shaft 7 in a rotationally fixed manner via the serration 10, the drive shaft 7 is now also rotated clockwise according to the arrow PF. There is thus a direct torque transmission from the drive wheel 2 via the drive shaft 7 and the gear 5 to the load wheel 4. Due to the right-hand movement threads 30, 31 of the brake disc 29 and the drive shaft 7, when the drive wheel 2 rotates clockwise according to the arrows PF the brake disk 29 according to the arrow PF 1 of FIG. 2 from the friction disk 32 and thus also from the pressure disk 33. The load L can be raised without braking.
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. Auf- grunddessen 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, the attached load L causes the load wheel 4 to rotate in the direction of the arrow PF 3, that is to say counterclockwise, and thus also a rotation of the drive shaft 7. As a result, the brake disk 29 becomes in the direction of the arrow PF 2 pulled against the friction plate 32 and this against the pressure plate 33. The load L is fixed in position at this height (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 Friktions- Scheibe 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 is rotated counterclockwise in the direction of the arrow PF 3 in FIGS. 1-4. After a predetermined angle of rotation, the driving pin 28 comes into contact with a web 27 of the drive wheel 2, so that the brake disk 29 is now also displaced on the movement thread 31 of the drive shaft 7 and is lifted off the friction disk 32 or the pressure disk 33. The load L then causes the drive shaft 7 to rotate relative to the drive wheel 2, so that the brake disc 29 again corresponds to the friction according to the arrow PF 2. Washer 32 and this pulled against the thrust washer 33 and the load L is braked.
BezugsZeichenaufstellungREFERENCE NUMBERS
1 - Hebezeug1 - hoist
2 - Antriebsrad2 - drive wheel
3 - Lastdruckbremse3 - load pressure brake
4 - Lastrad4 - load wheel
5 - Getriebe5 - gearbox
6 - Ende von 76 - end of 7
7 - Antriebswelle7 - drive shaft
8 - Ende von 78 - end of 7
9 - zylindrischer Längenabschnitt von 79 - cylindrical length section of 7
10 - Kerbverzahnung in 610 - serration in 6
11 - Gewindeabschnitt in 611 - threaded section in 6
12 - radialer Kragen von 1312 - radial collar of 13
13 - Buchse13 - socket
14 - Schulter an 714 - shoulder on 7
15 - Flügelscheibe15 - wing disc
16 - Mutter16 - mother
17 - Ringkörper von 1517 - ring body of 15
18 - Flügel von 1518 - wing of 15
19 - Rückenbereich von 1819 - back area of 18
20 - Anschlagfläche20 - stop surface
21 - Vorsprünge an 221 - protrusions on 2
22 - Seite von 2 23 - Nabe von 222 - Page of 2 23 - Hub of 2
24 - Stirnseite von 1524 - face of 15
25 - Seite von 225 - Page of 2
26 - Aussparungen in 2526 - recesses in 25
27 - Stege zwischen 2627 - bridges between 26
28 - Mitnahmestift an 2928 - Take along pin on 29
29 - Bremsscheibe29 - brake disc
30 - Innengewinde von 2930 - internal thread from 29
31 - Außengewinde von 731 - external thread from 7
32 - Friktionsscheibe 33 - Druckscheibe32 - friction disc 33 - thrust washer
34 - Querplatte34 - cross plate
35 - Schraubendruckfeder35 - helical compression spring
36 - Stutzen von 2936 - spigot of 29
37 - Ringausnehmung in 237 - ring recess in 2
38 - Querplatte38 - cross plate
39 - Lager für 439 - bearing for 4
40 - Gleitflächen an 740 - sliding surfaces on 7
41 - Stutzen an 441 - spigot on 4
42 - Zahnrad42 - gear
43 - Zahnritzel43 - pinion
44 - Zahnräder44 - gears
45 - Zahnradendabschnitt von 745 - gear end portion of FIG. 7
G - Gehäuse v. L - Last PF - Pfeil PF1 - Pfeil PF2 - Pfeil PF3 - Pfeil G - housing v. L - load PF - arrow PF1 - arrow PF2 - arrow PF3 - arrow

Claims

Patentansprüche claims
1. Hebezeug, das innerhalb eines Gehäuses in axialer Hinteineinanderanordnung ein Antriebsrad (2), eine Lastdruckbremse (3), ein Lastrad (4) und ein Getriebe (5) aufweist, wobei das an einem Ende (6) einer An- triebswelle (7) vorgesehene Antriebsrad (2) 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) drehmomentüber- tragend koppelbar ist, d a d u r c h g e k e n n z e i c h n e t, dass das Antriebsrad (2) auf der Antriebswelle (7) axial unverschieblich, jedoch begrenzt relativdrehbar gelagert sowie mit einer auf einem Gewindeabschnitt (31) der Antriebswelle (7) axial verschiebbaren und unter Eingliederung einer Friktionsscheibe (32) gegen eine am Gehäuse festgelegte Druckscheibe (33) anpressbaren Bremsscheibe (29) als Bestandteil der Lastdruckbremse (3) begrenzt relativdrehbar ist.1. hoist, which has a drive wheel (2), a load pressure brake (3), a load wheel (4) and a gear (5) within a housing in an axial arrangement, the one at one end (6) of a drive shaft (7 ) provided drive wheel (2) via this drive shaft (7) passing through the load pressure brake (3) and the load wheel (4) with the gear (5) located at the other end (8) of the drive shaft (7) and driving off the load wheel (4) Torque-transmitting can be coupled, characterized in that the drive wheel (2) on the drive shaft (7) is axially immovable, but can be rotated relatively limited, and with an axially displaceable on a threaded section (31) of the drive shaft (7) and incorporating a friction disc (32 ) against a pressure disc (33) which can be pressed against the housing and which can be pressed against it as a component of the load pressure brake (3).
2. Hebezeug nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t, dass das Antriebsrad (2) auf einer auf der Antriebswelle (7) festgelegten Buchse (13) drehbar gelagert ist.2. Hoist according to claim 1, so that the drive wheel (2) is rotatably mounted on a bush (13) fixed on the drive shaft (7).
3. Hebezeug nach Anspruch 1 oder 2, d a d u r c h g e - k e n n z e i c h n e t, dass das Antriebsrad (2) einen stirnseitigen Vorsprung (21) aufweist, der mit einer mit der Antriebswelle (7) drehfest verbundenen Flügelscheibe (15) drehmomentübertragend zusammenwirkt . 3. Hoist according to claim 1 or 2, dadurchge - indicates that the drive wheel (2) has an end-side projection (21) which cooperates with a torque-transmitting wing disc (15) connected to the drive shaft (7) in a rotationally fixed manner.
4. Hebezeug nach einem der Ansprüche 1 bis 3, d a d u r c h g e k e n n z e i c h n e t, dass die Bremsscheibe (29) einen axial ausgerichteten Mitnahmestift (28) aufweist, der in eine segmentartige Aus- sparung (26) des Antriebsrads (2) in der dem Lastrad4. Hoist according to one of claims 1 to 3, that the brake disc (29) has an axially aligned driving pin (28) which is in a segment-like recess (26) of the drive wheel (2) in the load wheel
(4) zugewandten Seite (25) relativverschiebbar eingreift .(4) facing side (25) engages relatively displaceably.
5. Hebezeug nach einem der Ansprüche 1 bis 4 , d a d u r c h g e k e n n z e i c h n e t, dass die Bremsscheibe (29) durch eine sich an dem Antriebsrad (2) abstützende Feder (35) gegen die Druckscheibe (33) gepresst ist. 5. Hoist according to one of claims 1 to 4, that the brake disc (29) is pressed against the pressure disc (33) by a spring (35) which is supported on the drive wheel (2).
EP00993403A 1999-12-13 2000-12-02 Lifting jack Expired - Lifetime EP1150916B1 (en)

Applications Claiming Priority (3)

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DE19959999A DE19959999C2 (en) 1999-12-13 1999-12-13 Hoist
DE19959999 1999-12-13
PCT/DE2000/004325 WO2001044100A1 (en) 1999-12-13 2000-12-02 Lifting jack

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

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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)
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CN111302255A (en) * 2020-02-11 2020-06-19 三门核电有限公司 Chain block capable of electrically pulling zipper

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US20020027222A1 (en) 2002-03-07
AU759668B2 (en) 2003-04-17
HK1046126A1 (en) 2002-12-27
ZA200106542B (en) 2002-11-08
WO2001044100A1 (en) 2001-06-21
CN1148314C (en) 2004-05-05
DE19959999C2 (en) 2001-10-11
DE19959999A1 (en) 2001-07-05
JP2003516918A (en) 2003-05-20
US6527253B2 (en) 2003-03-04
CZ291908B6 (en) 2003-06-18
CA2363082A1 (en) 2001-06-21
DE50007068D1 (en) 2004-08-19
CA2363082C (en) 2004-11-23
AU2828001A (en) 2001-06-25
ATE271017T1 (en) 2004-07-15
BR0008168A (en) 2002-01-22
PL202461B1 (en) 2009-06-30
TW555686B (en) 2003-10-01
KR20010102058A (en) 2001-11-15
ES2222274T3 (en) 2005-02-01
EP1150916B1 (en) 2004-07-14
KR100417577B1 (en) 2004-02-05
CN1340026A (en) 2002-03-13
CZ20012915A3 (en) 2002-03-13
PL349263A1 (en) 2002-07-01

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