WO2022069365A1 - Accouplement ayant une fixation d'arbre améliorée et application industrielle et utilisation - Google Patents

Accouplement ayant une fixation d'arbre améliorée et application industrielle et utilisation Download PDF

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Publication number
WO2022069365A1
WO2022069365A1 PCT/EP2021/076351 EP2021076351W WO2022069365A1 WO 2022069365 A1 WO2022069365 A1 WO 2022069365A1 EP 2021076351 W EP2021076351 W EP 2021076351W WO 2022069365 A1 WO2022069365 A1 WO 2022069365A1
Authority
WO
WIPO (PCT)
Prior art keywords
coupling
hub
hub part
shaft
spring
Prior art date
Application number
PCT/EP2021/076351
Other languages
German (de)
English (en)
Inventor
Michael Kropp
Niklas Sondermann
Original Assignee
Flender 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 Flender Gmbh filed Critical Flender Gmbh
Publication of WO2022069365A1 publication Critical patent/WO2022069365A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
    • F16D1/0852—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping between the mating surfaces of the hub and shaft
    • F16D1/0864—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping between the mating surfaces of the hub and shaft due to tangential loading of the hub, e.g. a split hub

Definitions

  • the invention relates to a clutch that has an improved shaft connection.
  • the invention also relates to an industrial application and a use that has such a clutch.
  • a clutch which has a hub part which is divisible and in which spring grooves are formed.
  • the hub part is designed to be divisible along a parting plane.
  • the spring grooves each lie completely in one half of the hub of the hub part.
  • Couplings are used in different areas of application that are subject to increasing demands in terms of performance, service life and ease of maintenance.
  • the object of the invention is to provide a clutch that offers an improvement in at least one of the aspects outlined.
  • the coupling has a first hub part that can be connected to a first shaft.
  • the first hub part is designed to transmit a torque transported via the shaft to other components of the clutch or from these to the first shaft.
  • the first hub part is divisible and accordingly comprises a first and a second hub half.
  • the hub halves can be releasably joined together during assembly, so that a torque-transmitting connection to the first shaft is ensured.
  • the first hub half and the second hub half are designed as separate parts that can be separated from one another.
  • the first hub halves and the second hub halves can preferably be connected to one another and/or detached from one another via an, in particular exclusive, translatory relative movement, in particular in the radial direction of the shaft.
  • first hub half and the second hub half are designed to encompass essentially half the circumference of the shaft, preferably 175° to 180° of the shaft in the circumferential direction.
  • the first hub half and the second hub half can be identical, mirror images of one another or just complementary to one another.
  • a keyway is formed in the first hub portion and is adapted to releasably receive a key. In an intended operating state, the torque-transmitting connection between the first shaft and the first hub part takes place by means of the spring.
  • the keyway is divisible. Accordingly, the keyway is only partially formed in the first and second halves of the hub. The first and second halves of the hub can be easily aligned with one another when the coupling is installed thanks to the divisible keyway.
  • the first hub part is consequently can be mounted precisely in a simple manner. Precise assembly of the first hub part on the first shaft in turn ensures minimized imbalances during operation of the clutch, which in turn leads to an increased service life of the clutch. In addition, the first hub part is maintenance-friendly.
  • the spring groove formed in the first hub part and a wave spring groove provided in the shaft can together accommodate a spring, in particular a feather key, and thereby form a form-fitting shaft-hub connection.
  • the spring groove formed in the first hub part has a substantially rectangular cross section in the axial direction of the shaft in the assembled state, particularly when the first hub half and the second hub half are in contact with one another or are at their minimum possible distance from one another. Side surfaces of the keyway that point in the tangential direction, which are formed by the first hub part, can thereby essentially lie flat against a key, in particular a feather key, inserted in the keyway and the shaft keyway of the shaft in the assembled state.
  • the tongue is preferably pressed in the tangential direction in the tongue groove of the first hub part.
  • the spring can easily slide between the first hub half and the second hub half, at least in the area of the spring groove.
  • the hub half must be clamped in the tangential direction and thus pressed in the keyway of the first hub part.
  • the non-rotatable connection of the shaft with the first hub part can thus be effected both positively and non-positively. This enables a particularly strong non-rotatable connection of the shaft to the first hub part, which can transmit a particularly high torque.
  • the spring groove can be divided when the clutch is dismantled. Mutual loosening of the first and second hub halves enables the spring to be easily released from the spring groove. In particular, the spring can be removed without additional aids when dismantling. As a result, the first hub part can be dismantled quickly and easily from the first shaft, which speeds up the maintenance process.
  • the tongue and/or the tongue groove can have a fit along a circumferential direction.
  • the fit is configured to adjust a relative position between the first and second hub halves of the first hub part.
  • the fit can be designed as a clearance fit, transition fit or press fit.
  • the relative position between the first and second halves of the hub can be adjusted in particular by appropriate selection of a keyway width and/or a keyway width.
  • these dimensions can be maintained in a simple manner with relatively narrow tolerances. The increased precision during assembly is therefore achieved in a cost-effective manner.
  • the tongue groove and/or the tongue can be adjusted on their side surfaces by their angular accuracy relative to one another. Tongue grooves and tongues with correspondingly straight side surfaces can also be produced cost-effectively.
  • the spring groove can be designed so that it can be divided symmetrically or asymmetrically.
  • a symmetrically designed spring groove is symmetrically divided by a dividing plane between the first and second hub halves and is thus simple in Construction . With an asymmetrically divided keyway, it can be ensured that the key typically remains in the same hub half when it is removed. This prevents the spring from accidentally falling down.
  • the spring groove can have a rectangular, trapezoidal, trapezoidal, polygonal, diamond-shaped or dovetail-shaped cross section.
  • the spring can have a corresponding cross section.
  • the tongue and groove can be adapted to a wide range of applications.
  • spring grooves or Springs can be used in forms that are technically impossible or impractical in undivided spring grooves. Design freedom is therefore gained by the claimed clutch, and thus an enlarged conceivable range of applications is opened up.
  • the spring groove is arranged radially inside a screw connection of the first hub part.
  • the screw connection of the first hub part allows the first and second hub halves to be detachably connected to one another, so that they form the first hub part.
  • the first and second halves of the hub can be aligned with one another simply by tightening the screw connection in the vicinity of which the divisible spring groove is formed.
  • a successive tightening of opposing screw connections on a hub part is no longer necessary.
  • the claimed coupling makes it possible to speed up assembly of the latter.
  • the first hub part can be designed as a claw part.
  • a precise alignment of the claws is also possible due to the precise alignment of the first and second hub halves of the first hub part. This prevents a claw from bearing against a damping body in a manner that is not suitable for the load. Carry claws that do not fit properly to the load in turn to increased wear of the corresponding damping body.
  • the stressed clutch thus makes it possible to more reliably exploit the potential in service life for a damping body, and thus for the clutch as a whole. The efficiency of the coupling and the application associated with it is thus further increased.
  • a cutting gap can be formed in the first hub part, which extends through the spring groove.
  • the dividing plane along which the tongue groove is divided is also defined by the kerf.
  • the first hub part can consequently be produced cost-effectively in a simple manner by sawing it open into a first and a second hub half. When mounted, the cutting gap is bridged by the spring.
  • the cutting gap is also present in the assembled state of the first hub part.
  • surfaces of the first hub half and the second hub half that face each other in the tangential direction are at least slightly spaced apart from one another via the cutting gap. This makes it possible to clamp the shaft and/or the spring in the first hub part.
  • a plurality of spring grooves can be formed in the first hub part, which are designed to be divisible.
  • the hub halves are, for example, at three or four, and so on. divisible spring grooves as hub thirds or hub quarters , etc . to grasp .
  • the claimed clutch thus makes it possible to use a plurality of springs in a simple manner in order to produce the torque-transmitting connection between the first shaft and the first hub part.
  • redundancy can be maintained, or by reducing the mechanical stresses on the springs and/or spring grooves, their wear can be minimized.
  • the stressed coupling is therefore suitable for mechanically highly stressed applications as well as for applications requiring precision. settable .
  • the claimed clutch consequently has an enlarged possible range of uses.
  • the claimed clutch can have a second hub part, which interacts with the first hub part in a torque-transmitting manner. This can be done directly or indirectly, for example with the interposition of at least one damping body.
  • the second hub part has a divisible keyway, through which a torque-transmitting connection to a second shaft is produced in the assembled state.
  • the second hub part can be designed according to at least one of the embodiments of the first hub part outlined above.
  • the claimed coupling has an intermediate piece that is essentially tubular.
  • the intermediate piece is connected to at least the first hub part in a torque-transmitting manner.
  • Such intermediate pieces and correspondingly constructed couplings are known, for example, from the previously unpublished European patent application EP 20 198 260. 0 known .
  • the disclosure of EP 20 198 260 . 0 is incorporated by reference into the present application.
  • the task is also solved by an industrial application according to the invention.
  • the industrial application includes a drive unit through which a drive power is provided and which has an output shaft.
  • the drive unit can be designed as an electric motor, internal combustion engine, hydraulic motor, turbine wheel or flywheel.
  • the drive power is connected via a clutch to a driven unit that has an input shaft and is a mechanical application that determines the function of the industrial application.
  • the industrial application can be used as a whole as a mill, roller mill, cement mill, sugar mill, extruder, conveyor system, rock crusher, roller crusher, agitator, agitated crusher, rotary kiln, roller press, roller press, pump, fan, lifting device, scrap press or garbage compactor be trained.
  • the clutch is designed according to one of the embodiments outlined above.
  • the task is also solved by using the coupling, which can be designed and developed as described above, for both a positive and non-positive shaft-hub connection.
  • the shaft of the shaft-hub connection can enter into a form fit with the clutch via a spring used in the keyway of the coupling and a shaft keyway of the shaft, in particular a feather key. Due to the divisible first hub part, the shaft can also be clamped in the first hub part and/or the spring in the first hub part, so that a frictional connection can also be provided for the shaft-hub connection.
  • first hub part can be divided, in particular into a first hub half and a second hub half that is separate from the first hub half, it is easy to assemble despite the simultaneous form fit and friction fit, so that the shaft-hub connection can be made quickly and easily .
  • FIG. 1 schematically shows a first embodiment of the claimed clutch in a sectional view
  • FIG. 3 shows a schematic structure of an embodiment of the claimed industrial application.
  • a first embodiment of the claimed clutch 10 is shown schematically in FIG. 1 in a sectional view.
  • the clutch 10 is designed to transmit torque 25 from a first shaft 12 (not shown in detail) to a second shaft 14 (not shown in detail) by rotation about a main axis of rotation 15 .
  • the clutch 10 comprises a first hub part 20 which, in the assembled state, produces a torque-transmitting connection of the clutch 10 to the first shaft 12 .
  • the first hub portion 20 includes first and second hub halves 24 , 26 releasably connected together.
  • the first and second halves of the hub are each provided with at least one claw 21, so that the first hub part 20 is designed as a claw part.
  • the first and second hub halves 24 , 26 are detachably connected to one another via screws 34 which belong to a screw connection 35 .
  • the first and second hub halves 24 , 26 are separated from one another along a parting plane 27 .
  • a cutting gap 36 is formed between the first and second hub halves 24 , 26 .
  • the first and second hub halves 24 , 26 each have adjacent indentations 42 which extend essentially in the radial direction 45 . This forms a divisible spring gap 30 in which a spring 32 (not shown in detail) can be releasably accommodated.
  • the torque 25 is transmitted from the first shaft 12 to the clutch 10 , in particular to the first hub part 20 , by the spring 32 , which is accommodated in the divisible spring groove 30 in the assembled state.
  • the torque 25 is further transmitted via the claws 21 to an essentially tubular adapter 40 with damping bodies 43 on the second hub part 22 .
  • the second hub part 22 is designed to correspond to the first hub part 20 . Due to the fact that the second hub part 22 is designed to correspond to the first hub part 20, the coupling 10 according to FIG. 1 is a double-jointed coupling.
  • FIG. 2 The embodiment according to FIG. 1 is shown in FIG. 2 in a detailed view.
  • the first shaft 12 has a wave keyway 13 in which the key 32 is partially received.
  • the spring 32 is also in the divisible spring groove 30 on first hub part 20 was added. This implements the principle of a feather key.
  • the spring 32 is precisely aligned by the divisible spring groove 30, so that the first hub part 20 can be aligned and mounted on the first shaft 12 in a simple manner with increased accuracy.
  • a cutting gap 36 remains between the first hub half 24 and the second hub half 26.
  • the cutting gap 36 is bridged by the spring 32.
  • the industrial application 50 includes a drive unit 52, which can be designed as an electric motor, internal combustion engine, hydraulic motor, turbine wheel or flywheel. Torque 25 is made available by drive unit 52 and is supplied to a clutch 10 via an output shaft 51 . The torque 25 is transmitted from the clutch 10 to an output unit 54 via an input shaft 53 .
  • the output unit 54 is a mechanical application that determines the function of the industrial application 50 .
  • the industrial application 50 can be designed as a whole as a mill, roller mill, cement mill, sugar mill, extruder, conveyor system, rock crusher, roller crusher, agitator, agitated comminutor, rotary kiln, roller press, roller press, pump, fan, lifting device, scrap press or garbage compactor.
  • the coupling 10 is designed according to one of the embodiments outlined above, for example as a coupling 10 or double-jointed coupling according to FIG.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

L'invention concerne un accouplement (10) comprenant une première partie de moyeu (20) qui est conçue pour être séparée pour une liaison de transmission de couple avec un premier arbre (12). L'accouplement (10) comprend également une rainure de ressort (30) destinée à recevoir un ressort (32). Selon l'invention, la rainure de ressort (30) est conçue pour être séparable. L'invention concerne également une application industrielle (50) et une utilisation, équipées d'un tel accouplement (10).
PCT/EP2021/076351 2020-10-01 2021-09-24 Accouplement ayant une fixation d'arbre améliorée et application industrielle et utilisation WO2022069365A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020212446.9A DE102020212446A1 (de) 2020-10-01 2020-10-01 Kupplung mit verbesserter Wellenanbindung und Industrie-Applikation
DE102020212446.9 2020-10-01

Publications (1)

Publication Number Publication Date
WO2022069365A1 true WO2022069365A1 (fr) 2022-04-07

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ID=78032428

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Application Number Title Priority Date Filing Date
PCT/EP2021/076351 WO2022069365A1 (fr) 2020-10-01 2021-09-24 Accouplement ayant une fixation d'arbre améliorée et application industrielle et utilisation

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DE (1) DE102020212446A1 (fr)
WO (1) WO2022069365A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1575932A1 (de) * 1966-08-16 1970-02-19 Int Harvester Co Einrichtung zur loesbaren Befestigung von Naben auf Wellen
DE6934998U (de) 1968-09-05 1970-03-05 Nadella Welle mit ankupplungsteil
US20040091310A1 (en) 2001-03-22 2004-05-13 Istvan Bacskay Shaft coupling
DE202005002195U1 (de) * 2005-02-11 2005-05-04 Ktr Kupplungstechnik Gmbh Klemmnabe
CN104100649A (zh) 2013-04-15 2014-10-15 上海电机系统节能工程技术研究中心有限公司 对分抱紧式联轴器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1575932A1 (de) * 1966-08-16 1970-02-19 Int Harvester Co Einrichtung zur loesbaren Befestigung von Naben auf Wellen
DE6934998U (de) 1968-09-05 1970-03-05 Nadella Welle mit ankupplungsteil
US20040091310A1 (en) 2001-03-22 2004-05-13 Istvan Bacskay Shaft coupling
DE202005002195U1 (de) * 2005-02-11 2005-05-04 Ktr Kupplungstechnik Gmbh Klemmnabe
CN104100649A (zh) 2013-04-15 2014-10-15 上海电机系统节能工程技术研究中心有限公司 对分抱紧式联轴器

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DE102020212446A1 (de) 2022-04-07

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