EP2625131B1 - Engin de levage à courroie dentée - Google Patents

Engin de levage à courroie dentée Download PDF

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Publication number
EP2625131B1
EP2625131B1 EP11764741.2A EP11764741A EP2625131B1 EP 2625131 B1 EP2625131 B1 EP 2625131B1 EP 11764741 A EP11764741 A EP 11764741A EP 2625131 B1 EP2625131 B1 EP 2625131B1
Authority
EP
European Patent Office
Prior art keywords
toothed
belt
lifting device
toothed belt
output 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.)
Active
Application number
EP11764741.2A
Other languages
German (de)
English (en)
Other versions
EP2625131A1 (fr
Inventor
Oliver Moll
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Demag Cranes and Components GmbH
Original Assignee
Demag Cranes and Components GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Demag Cranes and Components GmbH filed Critical Demag Cranes and Components GmbH
Publication of EP2625131A1 publication Critical patent/EP2625131A1/fr
Application granted granted Critical
Publication of EP2625131B1 publication Critical patent/EP2625131B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/28—Other constructional details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/28—Other constructional details
    • B66D1/36—Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/28—Other constructional details
    • B66D1/30—Rope, cable, or chain drums or barrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/18—Power-operated hoists
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/18—Power-operated hoists
    • B66D3/26—Other details, e.g. housings

Definitions

  • the invention relates to a toothed belt train for lifting and lowering of loads with a toothed belt driven by a driven gear and positively engaging with the driven wheel in a looping area.
  • corresponding chain hoists comprise a motorized drive unit, a transmission, an output shaft on which a sprocket is rotatably mounted, and a suspension means in the form of a chain for indirectly receiving the load to be moved.
  • the sprocket and the chain are positively engaged with each other. Due to the positive connection, a lifting force, which results from the drive-side and transmitted by the transmission torque, introduced into the chain.
  • the chain is connected at its one, seen from the sprocket from the load-side end with a freely suspended load-receiving means such as a load hook.
  • the other, unloaded chain end is located in a container-shaped chain memory, which receives the chain depending on the direction of rotation of the sprocket via an opening or releases.
  • a guide can be provided in the region of the sprocket to prevent snagging or jamming of the chain or individual chain links between sprocket and chain storage. For a reduction in wear, it is also common to lubricate the chain over its entire length.
  • elevator systems is a use of a belt-like support and propellant from the German patent application DE 10 2004 047 158 A1 known.
  • Corresponding elevator systems comprise an elevator car, which is guided and moved essentially in a straight line in the vertical direction in an elevator shaft.
  • the support and propellant used for this purpose is fixedly secured at one end to the bottom of the elevator shaft and at another end to a ceiling of the elevator shaft and is guided between the two ends via rotatably mounted deflection pulleys and a drive pulley.
  • some or all of the panes may be attached to the elevator car so as to be moved in a straight line in the vertical direction, whereas the remaining panes are fixed in place in the elevator shaft.
  • the carrying and blowing agent is designed in the manner of a toothed belt or V-ribbed belt whose teeth or V-ribs in contact with the peripheral surfaces of the discs stand.
  • the four provided for raising and lowering of loads support means are designed as a toothed belt.
  • the toothed belts are each fastened with a first end to a drum winch and are unwound from this alsbziehungrii.
  • This drum winch with its own drive has only the task of storing the timing belt.
  • the toothed belt is guided vertically downwards in the direction of the load to be lifted via a toothed belt pulley.
  • the four pulleys are synchronously driven by a common drive and initiate the lifting and cable forces in the timing belt.
  • the German patent application DE 39 11 292 A1 relates to a hoist for lifting and lowering of loads whose suspension means and the drive means driving the output gear are interchangeable.
  • the support means may be formed as a chain, flat rope, round rope or toothed belt and corresponding manner the output gear as a sprocket, pulley or timing belt pulley, so that optionally results in a chain hoist, cable or a toothed belt train.
  • a chain hoist serving as a support means guide is also provided.
  • the insert is disposed above the sprocket so as to prevent the chain from extruding out of the sprocket from the insert.
  • each toothed belt is positively and synchronously driven by a separate but drivingly connected output gear and in each case from a take-off or wound up.
  • each toothed belt is deflected via a first deflecting roller designated as a pressure roller and fed to the corresponding driven gear in its upper region.
  • a first deflecting roller designated as a pressure roller
  • the timing belt from the upper feed point of the driven wheels wrap around in a form-fitting manner in about half their circumference, a lower second guide pulley is arranged opposite each output gear of the upper first deflection roller opposite.
  • the lower second pressure rollers also ensure that the toothed belts in the vertical direction of the Off wheels or run on this.
  • the JP H03 9392 U discloses a three-strand cable with three einrilligen cable drums, each of which a rope is wound or unwound. In this case, each cable is guided in the region of the cable inlet or outlet of four guide rollers with respect to the respective cable groove of the cable drum.
  • the invention has for its object to provide an improved Zahnriemenzug.
  • an improved toothed belt train for lifting and lowering loads is driven by a toothed belt driven by a driven gear and positively engaging with the driven wheel in a wrap area such that at least three, preferably five to seven, seen one behind the other in the circumferential direction of the driven wheel, Guide rollers are arranged, which press the toothed belt in the wrap on the output gear and thus maintain the positive connection between the timing belt and the driven wheel.
  • Guide rollers are arranged, which press the toothed belt in the wrap on the output gear and thus maintain the positive connection between the timing belt and the driven wheel.
  • a possibly unintentionally reversed positive connection between the toothed belt and the driven wheel carries the risk of a load crash.
  • the safety of Zahnriemenzuges is advantageously increased by the fact that the wrap is at least 90 °, preferably 120 ° to 180 ° and particularly preferably 120 ° to 150 °.
  • a secure toothed belt guide via the driven wheel is further improved by the fact that the toothed belt in addition to guide rollers on additional deflection or guide rollers to the driven gear or can be discharged from this.
  • a load-bearing device is suspended on the toothed belt.
  • an advantageous embodiment is carried out such that the load-receiving means is freely suspended.
  • the load-carrying means is suspended at a first end of the toothed belt.
  • An alternative embodiment provides that the load-receiving means is formed in a single sheared embodiment as a bottom block.
  • the output gear rotatably seated on an output shaft and the output shaft is drivingly connected via a gear with a motor, in particular an electric motor connected.
  • An advantageous embodiment minimizes the risk of jamming or jamming through the use of a belt store which stores the toothed belt and is secured to the toothed belt train.
  • An improved embodiment in the way that in the belt store a rotatably mounted on a shaft storage roller is arranged, with which the toothed belt is connected at its second end and on which the toothed belt is wound, effected by an ordered storage of the toothed belt on the storage roll one especially reliable operation of the toothed belt train.
  • the winding process of the toothed belt can thereby be improved in an advantageous manner that the storage roller is connected via a torsion spring with the shaft in such a way that unwinding of the toothed belt tensioning the torsion spring and the toothed belt on the storage roll over from a wound toothed belt the force resulting from the energy stored in the tensioned torsion spring can be wound up.
  • the winding process of the toothed belt is alternatively improved in that the storage roller is drivingly connected to a winding motor, in particular an electric motor.
  • At least one guide roller leads the timing belt from the belt store to the driven gear and at least two guide rollers lead the timing belt away from the output gear, wherein the guide roller and the guide rollers on a housing of Zahnriemenzugs are attached.
  • FIG. 1 is a toothed belt train 1 with a functioning as a tensile or suspension means toothed belt 2 with belt teeth 2c shown.
  • the toothed belt train 1 is driven by a motor 3, preferably an electric motor.
  • the drive power applied by the engine 3 is transmitted via an unillustrated transmission 4 (see FIG. 3 ) and a not shown output gear 4a (see FIG. 2 ) are positively transferred to the toothed belt 2.
  • the motor 3 is flanged to a housing 5, the installation space in the longitudinal section, not shown, is H-shaped, so that the installation space is separated by a load-bearing wall in two mounting space halves.
  • the installation space halves are each open at the side facing away from the wall.
  • the toothed belt 2 is from a belt store 6, not shown in detail (see FIG. 2 ) stored, which is laterally attached to the housing 5, and released or received depending on the direction of rotation of the motor 3 and the driven gear 4a.
  • the toothed belt train 1 is designed to be single-stranded, so that the toothed belt 2 has a first free-hanging end 2a, to which a load-receiving means 7 is fastened.
  • FIG. 2 shows a partially broken view of the toothed belt train 1 of FIG. 1 , in particular a detailed representation of the guidance of the toothed belt 2 in the toothed belt train 1.
  • the toothed belt 2 is fastened with its second end 2b to a storage roller 6a, which is rotatably mounted within the belt store 6 on a shaft 6b.
  • the shaft 6b is mounted in a container-like storage housing 6d.
  • the storage roller 6a is connected via a torsion spring 6c to the shaft 6b in such a way that, starting from the toothed belt 2 wound on the storage roller 6a, unwinding of the toothed belt 2 biases the torsion spring 6c and thus according to the principle known from a roller shutter winder the toothed belt 2 can be rolled up again on the storage roller 6a via the force resulting from the energy stored in the tensioned torsion spring 6c.
  • the toothed belt 2 leaves the belt store 6 or its storage housing 6d in the direction of the housing 5 and is guided by means of a deflection roller 9, which is rotatably mounted on the housing 5, from the belt store 6 into the housing 5 and arranged therein Output gear 4a supplied laterally.
  • the output gear 4a is non-rotatably connected to the output shaft 4b, which is connected to the transmission 4, not shown (see FIG. 3 ) cooperates, connected and rotatably mounted on the housing 5.
  • the radially encircling surface of the output gear 4a has a profiling, which is complementary to the surface contour of the toothed belt 2, preferably in the form of wheel teeth 4c.
  • the guidance of the toothed belt 2 is supported on the output gear 4a by a total of seven guide rollers 10.
  • the guide rollers 10 are positioned in the region of the driven gear 4a and spaced approximately over the upper half of the wheel circumference distributed such that each other In this area, the toothed belt 2 supplied between the guide rollers 10 and the output gear 4a is brought into positive engagement with its profiled side with the wheel teeth 4c of the output gear 4a.
  • the wrap-around region, in which the positive-engagement engagement is made extends over at least 90 °, but preferably 120 ° to 180 °, and particularly preferably 120 ° to 150 °, with respect to an imaginary rotation about the axis of rotation of the driven wheel 4a.
  • At least two guide rollers 10 are provided over each 30 ° comprehensive portion of the belt.
  • the toothed belt 2 is guided by the guide rollers 10 so over the rotating output gear 4a, that the free first end 2a of the toothed belt 2 on the side facing away from the storage roller 6a side leaves the output gear 4a and is released in the vertical direction down again.
  • the output gear 4a is preferably designed as a toothed belt pulley.
  • the release of the toothed belt 2 is assisted by a stripping element 12b, which is fastened in the housing 5 in the region of the lower half driven gear 4a such that the positive connection is interrupted by a splitting wedge effect of the correspondingly formed geometry of the stripping element 12b.
  • the load suspended on the load receiving means 7 is sufficient to allow the toothed belt 2 to run off the driven gear 4a safely.
  • a cassette wall 12a connected to the wiper element 12b whose function is shown in FIG FIG. 3 is described in detail.
  • the released toothed belt 2 is led out below the output gear 4a between arranged at the bottom of the housing 5 guide rollers 11 in a vertical downward direction out of the housing 5.
  • the load-receiving means 7 is attached.
  • the axes of rotation of the output shaft 4b, the shaft 6b, the guide roller 9, the guide rollers 10 and the guide rollers 11 are preferably aligned parallel to each other.
  • FIG. 3 shows a front view of FIG. 2 in partial section AB, in which a cassette 12 with cassette walls 12a as an advantageous embodiment for rotatably supporting the rollers 9 (see FIG. 2 ), FIGS. 10 and 11. Only one roller 10 and 11 is shown in section.
  • the cassette 12 is detachable on the output shaft 4b and the output gear 4a (see FIG FIG. 2 ) floating mounted unit and includes in addition to the rollers 9, 10 and 11, the driven gear 4a and the scraper element 12b (see FIG. 2 ).
  • the cassette walls 12a have bearing openings by means of which the rollers 9, 10 and 11 are positioned and rotatably supported between two cassette walls 12a.
  • the stripping element 12b attached to at least one of the cassette walls 12a secures the driven wheel 4a unsecured between the stripping element 12b and the guide rollers 10 against vertical falling out of the area of the roughly semicircular guide rollers 10.
  • the output gear 4a is prepositioned approximately concentrically with respect to receiving openings for the passage of the output shaft 4b between the cassette walls 12a.
  • the cassette 12 is seated within the housing 5 on the cooperating with the gear 4 output shaft 4b, which is guided through the receiving opening at least the gear 4 facing cassette wall 12a, wherein the connection between the output shaft 4b and the output gear 4a is preferably realized by positive engagement.
  • the cassette 12 is axially secured via the output gear 4a on the output shaft 4b, for example, by a 4d sitting on the free, ie the end of the output shaft 4b facing away from the transmission 4b.
  • the cassette 12 is secured against rotation by means of at least one pin 13 which protrudes laterally from the cassette 12 and which is supported on recesses provided in the housing 5.
  • the housing 5 thus acts as an abutment, in particular for the guide rollers 10 and is therefore not taken away from the rotating output gear 4a.
  • the timing belt 2 is in the in FIG.
  • the invention also relates to a multi-stranded embodiment, in particular with a trained as a bottom load receiving means 7 in a simple sworded embodiment, wherein the first end 2a of the toothed belt 2 is not freely suspended, but firmly connected to the housing 5.
  • the belt store 6 with respect to the illustrated embodiment, in particular below the housing 5 with the chain memory of conventional chain hoists.
  • the winding of the toothed belt 2 via a winding motor, preferably by means of a standstill motor or a slip clutch, instead of via a torsion spring 6c.
  • the belt store 6 as a conventional chain store for chaotically receiving the toothed belt 2, so that the toothed belt 2 is not wound up, but is merely pressed out of the drive wheel 4a in disorder in the belt store.
  • a corresponding bearing can be made directly on the housing 5, that is to say in a form not combined as a removable structural unit.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Transmission Devices (AREA)

Claims (14)

  1. Palan à courroie crantée (1) destiné à soulever et abaisser des charges, ledit palan comportant une courroie dentée (2) qui est entraînée par une roue de sortie (4a) et qui est en prise par complémentarité de formes avec la roue de sortie (4) dans une zone d'enroulement, caractérisé en ce que dans la zone d'enroulement, lorsque l'on regarde dans la direction circonférentielle de la roue de sortie (4a), sont disposés au moins trois, de préférence cinq à sept, galets de guidage (10), qui pressent la courroie crantée (2) dans la zone d'enroulement contre la roue de sortie (4a) et qui maintiennent ainsi la liaison par complémentarité de formes entre la courroie crantée (2) et la roue de sortie (4a).
  2. Palan à courroie crantée (1) selon la revendication 1, caractérisé en ce que, lorsque l'on regarde dans la direction circonférentielle de la roue de sortie (4a), deux galets de guidage adjacents (10) sont distants l'un de l'autre au maximum sur 30° de la zone d'enroulement.
  3. Palan à courroie crantée (1) selon la revendication 1 ou 2, caractérisé en ce que la zone d'enroulement est d'au moins 90°, de préférence de 120° à 180°, et de façon particulièrement préférée de 120° à 150°.
  4. Palan à courroie crantée (1) selon l'une quelconque des revendications 1 à 3, caractérisé en ce que, indépendamment des galets de guidage (10), la courroie crantée (2) peut être approchée de la roue de sortie (4a), ou écartée de celle-ci, au moyen de galets de déviation ou de direction supplémentaires (9, 11).
  5. Palan à courroie crantée (1) selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'un moyen de réception de charge (7) est suspendu à la courroie crantée(2).
  6. Palan à courroie crantée (1) selon la revendication 5, caractérisé en ce que le moyens de réception de charge(7) est suspendu librement.
  7. Palan à courroie crantée (1) selon la revendication 5 ou 6, caractérisé en ce que le moyen de réception de charge (7) est suspendu à une première extrémité (2a) de la courroie crantée (2).
  8. Palan à courroie crantée (1) selon la revendication 5 ou 6, caractérisé en ce que, dans un mode de réalisation simple, le moyen de réception de charge (7) est conformé en moufle inférieur.
  9. Palan à courroie crantée (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que la roue de sortie (4a) est montée solidaire en rotation sur un arbre de sortie (4b), l'arbre de sortie (4b) est relié en entraînement par le biais d'un engrenage (4) à un moteur (3), en particulier un moteur électrique.
  10. Palan à courroie crantée (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le magasin de courroie (6), dans lequel est logée la courroie crantée (2), est fixé au palan à courroie crantée (1).
  11. Palan à courroie crantée (1) selon la revendication 10, caractérisé en ce que dans le magasin de courroie (6) est disposé une bobine de magasin (6a), montée à rotation sur un arbre (6b), à laquelle la courroie crantée (2) est reliée au niveau de sa seconde extrémité (2b) et sur laquelle la courroie dentée (2) est enroulée.
  12. Palan à courroie crantée (1) selon la revendication 11, caractérisé en ce que la bobine de magasin (6a) est reliée par la biais d'un ressort de torsion (6c) à l'arbre (6b) de telle manière que, à partir d'une courroie crantée enroulée (2), un déroulement de la courroie crantée (2) tend le ressort de torsion (6c) et la courroie crantée (2) peut être enroulée sur la bobine de magasin (6a) par le biais de la force résultant de l'énergie stockée dans le ressort de torsion tendu (6c).
  13. Palan à courroie crantée (1) selon la revendication 11, caractérisé en ce que la bobine de magasin (6a) est reliée en entraînement à un moteur d'enroulement, en particulier un moteur électrique.
  14. Palan à courroie crantée (1) selon l'une quelconque des revendications 10 à 13, caractérisé en ce qu'au moins un galet de déviation (9) rapproche la courroie crantée (2) depuis le magasin de courroie (6) vers la roue de sortie (4a), et au moins deux galets de direction (11) écartent la courroie crantée (2) de la roue de sortie (4a), le galet de déviation (9) et les galets de direction (11) étant fixés à un boîtier (5) du palan à courroie crantée (1).
EP11764741.2A 2010-10-06 2011-10-04 Engin de levage à courroie dentée Active EP2625131B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010047704A DE102010047704A1 (de) 2010-10-06 2010-10-06 Hebezeug mit einem Zahnriemen als Tragmittel
PCT/EP2011/067335 WO2012045749A1 (fr) 2010-10-06 2011-10-04 Engin de levage pourvu d'une courroie dentée comme moyen porteur

Publications (2)

Publication Number Publication Date
EP2625131A1 EP2625131A1 (fr) 2013-08-14
EP2625131B1 true EP2625131B1 (fr) 2014-07-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP11764741.2A Active EP2625131B1 (fr) 2010-10-06 2011-10-04 Engin de levage à courroie dentée

Country Status (6)

Country Link
US (1) US20130181177A1 (fr)
EP (1) EP2625131B1 (fr)
CN (1) CN103140431B (fr)
DE (1) DE102010047704A1 (fr)
ES (1) ES2498292T3 (fr)
WO (1) WO2012045749A1 (fr)

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Publication number Publication date
CN103140431A (zh) 2013-06-05
CN103140431B (zh) 2015-12-16
EP2625131A1 (fr) 2013-08-14
DE102010047704A1 (de) 2012-04-12
WO2012045749A1 (fr) 2012-04-12
US20130181177A1 (en) 2013-07-18
ES2498292T3 (es) 2014-09-24

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