• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:AT510239A1
    申请号:T0127110
    申请日:2010-07-29
    公开日:2012-02-15
    发明作者:Roman Dipl Ing Fh Eichinger
    申请人:Andritz Ag Maschf；
    IPC主号:
    专利说明:

    The invention relates to a device for damping vibrations in a drive train, in particular in stuffing screws in the pulp and paper industry.
    There are several different types of vibration dampers for damping vibrations in drive trains. Viscose (e.g., rate-proportional, hydraulic) dampers pump fluids from one chamber to another through a flow resistor. In order to make this possible, the handling of the oil used, including the problem of sealing, must be taken into account. An alternative to hydraulic dampers are 10 friction dampers. The advantage of a (Coulomb's) friction damper is the structure made of materials with linear material properties that do not change over the service life. Thus, the dynamic behavior of the damper can be very well predicted with suitable simulation programs. The installed parts can be machined in a conventional manner. 15 Especially in the case of large stuffing screws in the pulp and paper industry occasional vibration problems occur. These stuffing screws are used for material transport, drainage, sealing against pressure vessels and, in a special design, also for coarse fiberization of wood chips. For sealing, a hard plug is formed at the end of the screw in the region of the so-called coil 20 in order to separate the atmospheric region in the inlet from the pressure region after the plug screw. Due to the plug formation and drainage, high friction moments occur between the screw and the hoist plug in the area of the coil. This leads to stick-slip vibrations under certain operating conditions. 25 An attempt is made to avoid these vibrations by a suitable choice of process parameters. However, the process parameters often can not be changed as needed, since i.a. the speed is determined by the required throughput and can not be changed.
    The aim of the invention is therefore to eliminate the risk of vibrations in drive trains, 30 in particular in stuffing screws and screw presses in the pulp and paper industry.
    The invention is therefore characterized in that a cylindrical shaft, preferably designed as a hollow shaft, is provided around which at least one ring is arranged with friction surfaces. As a ring in this context 1
    2586 AT
    Also viewed annularly arranged friction elements, in which case the friction elements extend over a large part of the circumference. The ring with friction surfaces acts as a damper element, while the shaft, preferably hollow shaft, is responsible as a spring element for the provision in the starting days. The shaft offers the further advantage that in a stuffing screw or screw press required to remove the worm shaft distance to the transmission can be bridged in a simple way.
    An advantageous development of the invention is characterized in that the friction surfaces are arranged radially on the outside of at least one ring. A favorable embodiment of the invention is characterized in that a hollow cylinder is arranged around the at least one ring, wherein the hollow cylinder can be divided. If a hollow cylinder is arranged around the at least one ring, the mating surface of the friction surface can be advantageously provided on the inner circumference of the hollow cylinder, the hollow cylinder also protecting the (hollow) shaft against contamination.
    A favorable development of the invention is characterized in that the hollow cylinder or a sub-cylinder thereof has slots which extend axially and are arranged around the circumference of the cylinder, wherein a tangentially prestressed tension band or a plurality of circumferentially tangentially arranged prestressed tension rods may be provided for applying the damper torque can. Through the slots, the friction torque can be adjusted well, the damper torque can be applied in a simple way via a clamping band. Several tangentially arranged tie rods have the advantage that the required force can be well distributed to the individual elements.
    An alternative embodiment of the invention is characterized in that a plurality of rings are provided, which have friction surfaces on the axial end faces, wherein the rings can form the hollow cylinder. By this arrangement, the energy generated during the damping can be divided particularly well. The elements are also particularly easy to assemble or even replace single elements.
    A favorable development of the invention is characterized in that a plurality of axially biased tie rods are provided for applying the damper torque. The arrangement of the tie rods, the applied force can be well distributed. 2
    2586 AT
    The invention will now be described by way of example with reference to the drawings, in which:
    Fig. 1 is an isometric view of a variant of the invention
    Fig. 2 is a section through the first variant of the invention
    Fig. 3 is an isometric view of a second variant of the invention
    Fig. 4 is a section through a second variant of the invention
    Fig. 5 is a section through a further variant of the invention and
    Fig. 6 shows an application of the invention in a stuffing screw of the pulp and
    Represents paper industry.
    Fig. 1 shows an isometric view of a first variant of a torsional vibration damper 1 according to the invention. This torsional vibration damper 1 consists of a shaft 2 with flanges 3, which transmits the entire torque from the transmission (not shown) to the bearing shaft (not shown). This shaft 2 with the flanges 3 serves as a torsion spring element of the torsional vibration damper 1. On a flange, a tube (hollow cylinder) 4 is fixed, which extends beyond the other flange 3. The tube 4 has slots 5 which extend axially and are arranged around the circumference of the cylinder. To adjust the friction torque is a clamping band 6, which is held together by a screw 7 and biased tangentially. The tension band 6 is designed to be long and thin like a stretch spring. The spring characteristic should be as flat as possible. This ensures that even after moderate wear of the friction elements still enough tension is present to ensure the function of the damper 1.
    Fig. 2 shows the torsional vibration damper 1 according to the invention in section. Here, the shaft 2 has been shown as a solid shaft, but it can also be advantageously designed as a hollow shaft, thereby weight can be saved. It is also good to recognize the shape of the flanges 3, which are firmly connected to the shaft 2. The flanges 3 are each firmly connected to one half of a low-speed clutch. On one of the flanges 3, a pipe (hollow cylinder) 4 is fixed, on the other rings (8) are fixed with friction surfaces in the circumferential direction (tangential), in which case two juxtaposed rings 8 are shown. The rings 8 may also be made by a number of serving as friction annularly arranged slide strips. Depending on the load, 3
    2586 AT
    4 4 but only one ring 8 or more rings 8 are used. The tube 4 encloses here the rings 8 acts on the flange 3 a torsional moment, the torsion spring (shaft 2) is stretched. If the elongation is large enough that the adhesion limit between tube 4 and rings 8 is exceeded, energy is dissipated by the friction. It should be noted that the torsion spring (shaft 2) is as soft as possible while the tube 4 is made torsionally rigid. The difference in torsional rigidity is achieved by the highest possible diameter ratio between shaft 2 and tube 4. When used for damping vibrations in a drive train in stuffing screws in the pulp and paper industry, the shaft 2 takes over the function of the spacer.
    FIG. 3 and FIG. 4 show a second variant of a torsional vibration damper according to the invention, FIG. 1 representing an isometric view and FIG. 2 a section. Again, flanges 3 with a shaft 2, which can be designed as a hollow shaft, firmly connected. The tube 4 is here designed in two parts and consists of an inner tube 4 'and an outer tube 4 ", which are inserted into one another and have an interference fit. The outer tube 4 "has slots 5 here. In order to adjust the friction torque tangential tie rods 9 are arranged around the circumference here. As favorable has proved to be eight tie rods 9 to distribute the circumference in order to achieve a good distribution of power. The tie rods 9 are similar to expansion bolts long and thin designed to have a flat as possible characteristic.
    The function of the torsional vibration damper 1 can be taken from FIG. 4. The inner tube 4 'has a smaller diameter and is provided at its end with rings 8, in which case two rings 8 are shown, but also only one ring 8 or more rings 8 can be used. For more cost-effective production here are the tubes 4 'and 4 "made as half-shells and firmly connected by means of screws 10.
    Fig. 5 shows a further variant of the invention. The torsional vibration damper 1 also consists of a shaft 2, which may be designed as a hollow shaft, and is provided at its ends with flanges 3. The shaft 2 acts here again as a torsion spring. The tube 4 is formed here by rings 11, 1T, 11 ", etc., between which friction surfaces 12, 12 ', etc. are provided. The construction with rings 11 brings redundancy. Should a friction couple get stuck, there are others that fulfill the function of the damper. 4
    2586 AT
    In Fig. 6, the arrangement of the invention in a drive train for a plug screw of the pulp and paper industry is shown. But it is also applicable to screw presses and other aggregates. In Fig. 6 can be seen the motor 21, which is connected by means of a high-speed clutch 22 with a transmission 23 5. Between transmission 23 and bearing unit 24 is an inventive torsional vibration damper 1 which acts between two halves of the low-speed clutch. In the storage unit 24, the screw 25 of the screw conveyor 27 is stored. The storage of the screw 25 on the other side takes place in the so-called coil 28. The wood chips are introduced here in the inlet 26 10 in the screw conveyor 27 and compressed in the conical part and dewatered. The outlet 29 may be provided with a counter-pressure device 30. The entire drive train here consists of motor 21, high speed clutch 22, transmission 23, the disposed between two halves of the low speed clutch torsional vibration damper 1 and the low speed 15 clutch itself, the bearing unit 24, the worm 25 and the coil 28 of the screw 27 ,
    These plug screws 27 are used for material transport, drainage, a seal against pressure vessels and in special embodiments, a coarse fiberization of wood chips. For sealing, a hard plug is formed at the end of the screw 25 in the region of the so-called coil 28 in order to separate the atmospheric region in the inlet 26 from the pressure region after the screw conveyor 27. Due to the plug formation and drainage, high friction moments occur between the screw 25 and the wood plug in the region of the coil 28. In certain operating conditions, this leads to jerk-slip movements (stick-slip vibrations). In order to avoid possible damage to the transmission 23 or subsequently to the engine 21 as a result of these jolt sliding movements, a torsional vibration damper 1 is inserted between the halves of a low-speed clutch in the drive train between the transmission 23 and the bearing unit 24. As a result, the resulting plug screw vibrations can be permanently eliminated, since the stick-slip vibrations are self-excited vibrations. By sufficient damping, the energy of the vibration and thus its amplitude can be reduced to zero. When removing the screw 25, this must be pulled axially backwards out of the housing. For this, the storage unit 24 must be dismantled and in the direction 5
    2586 AT
    Transmission 23 still be enough space available. This axial length is now fully utilized by the torsional vibration damper 1 according to the invention, whereby he replaced the previously existing spacer, which only had the task of bridging the length between the bearing unit 24 and gear 23. 5 The torsional vibration damper according to the invention can be used wherever there is sufficient space in the axial length of a drive train or is needed. This is e.g. also on screw presses too. 6
    2586 AT
    权利要求:
    Claims (10)
    [1]
    1. A device for damping vibrations in a drive train (21, 22, 23, 1, 24) , 25, 28), in particular in stuffing screws in the pulp and 5 paper industry, characterized in that a cylindrical shaft (2), preferably designed as a hollow shaft is provided, which is arranged between the halves of a clutch and fixedly connected to these and around which at least one ring (8, 11, 11 ', 11 ") is arranged with friction surfaces.
    [2]
    2. Device according to claim 1, characterized in that the friction surfaces 10 (12, 12 ') radially on the outside at least one ring (8, 11, 11', 11 ") are arranged to.
    [3]
    3. Device according to claim 1 or 2, characterized in that around the at least one ring (8, 11, 11 ', 1Γ) a hollow cylinder (4, 4', 4 ") is arranged.
    [4]
    4. Device according to claim 3, characterized in that the hollow cylinder (4, 4 ', 4 ") is divided.
    [5]
    5. Device according to claim 3 or 4, characterized in that the hollow cylinder (4) or a partial cylinder (4 ', 4 ") thereof has slots (5) which extend axially and are arranged around the circumference of the cylinder.
    [6]
    6. Device according to claim 5, characterized in that a tangentially biased clamping band (6) is provided for applying the damper torque.
    [7]
    7. Device according to claim 5, characterized in that a plurality of circumferentially tangentially arranged prestressed tie rods (9) are provided for applying 25 of the damper torque.
    [8]
    8. Device according to claim 1, characterized in that a plurality of rings (11, 1 T, 11 ") are provided, which have at the axial end faces friction surfaces (12,12 ').
    [9]
    9. Device according to claim 3, characterized in that the rings (11, 30 11 ', 11 ") form the hollow cylinder (4).
    [10]
    10. Device according to claim 8 or 9, characterized in that a plurality of axially biased tie rods (13) are provided for applying the damper torque. 7 2586 AT
    类似技术:
    公开号 | 公开日 | 专利标题
    EP3189237B1|2019-09-18|Eccentric screw pump
    AT510239B1|2012-09-15|DEVICE FOR VIBRATING VIBRATIONS IN A DRIVE TRAIN
    DE102014112550B4|2016-06-16|Cavity Pump
    DE3149067A1|1982-07-22|"CLUTCH FOR FRICTIONAL ROTATING CONNECTION OF MACHINE PARTS, LIKE HUB AND SHAFT"
    DE3049645C2|1990-01-11|
    DE2942874A1|1981-04-30|ELASTIC SHAFT COUPLING
    EP2420651A2|2012-02-22|Bearing assembly for the compressor of a turbocharger of a combustion engine
    EP2463538B1|2013-09-25|Shrink disc for friction-type connection of rotating machine components
    DE2453645C3|1980-01-17|Elastic connection device for two essentially coaxial parts
    EP2776733B1|2016-02-10|Pressure-medium-actuated brake
    DE102017108744A1|2018-10-25|sealing unit
    EP2397716B1|2013-08-21|Elastic coupling
    DE102010053404A1|2012-06-06|Clamping nut for suspending ring-shaped machine part on conical shaft section, has housing element and axial force element, which is formed by hydraulic piston that is axially displaceable with respect to housing element
    DE10003335B4|2008-10-09|torsional vibration dampers
    DE643373C|1937-04-06|Spring clutch
    DE102014002192A1|2015-08-13|machine element
    EP3526482B1|2020-08-12|Clutch device
    EP3179124B1|2018-07-25|Friction disc
    DE102020103593A1|2021-08-12|Actuating arrangement for a friction clutch of a vehicle, compensation device for the actuating arrangement and method for axial force compensation in the actuating arrangement
    CH648914A5|1985-04-15|V-BELT DISC UNIT FOR A V-BELT GEAR WITH VARIABLE TRANSMISSION.
    WO1999027260A2|1999-06-03|Clamping device
    DE102015012705B4|2018-02-01|Clamping unit for rolling bearings on axles and shafts
    DE2337030A1|1974-02-14|UNIT OF ROTOR AND SHAFT FOR CENTRIFUGAL FAN
    DE3241080A1|1984-05-10|Freewheel
    DE2727963A1|1978-03-16|Flexible torque transmitting coupling - has conical or frusto=conical section rubber element between coupling parts to accommodate misalignment
    同族专利:
    公开号 | 公开日
    JP5850540B2|2016-02-03|
    EP2598769B1|2015-09-02|
    RU2013106202A|2014-09-10|
    KR101821442B1|2018-01-25|
    EP2598769A1|2013-06-05|
    US20130123029A1|2013-05-16|
    BR112013002028A2|2017-09-19|
    CA2806489A1|2012-02-02|
    CL2013000286A1|2013-09-13|
    US8998732B2|2015-04-07|
    AT510239B1|2012-09-15|
    KR20130091338A|2013-08-16|
    CN103052826B|2016-05-04|
    CA2806489C|2019-05-28|
    CN103052826A|2013-04-17|
    WO2012012816A1|2012-02-02|
    BR112013002028B1|2021-01-26|
    DK2598769T3|2015-12-07|
    JP2013535627A|2013-09-12|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US496710A|1893-05-02|Friction-coupling for |
    US1716284A|1927-08-18|1929-06-04|Risley Elton|Torsional vibration dampener|
    US1876658A|1930-03-22|1932-09-13|Joseph M Fox|Friction coupling for driving nuts and the like|
    US1913886A|1930-11-08|1933-06-13|Holtzercabot Electric Company|Drive shaft|
    US2346432A|1942-11-10|1944-04-11|Jack & Heintz Inc|Torsional vibration damper|
    US2705113A|1949-07-06|1955-03-29|Airex Mfg Co Inc|Fishing reel|
    US2907190A|1957-06-27|1959-10-06|Revere Camera Co|Friction clutch|
    US3320772A|1964-11-12|1967-05-23|Standard Engineering Company|Clutch device|
    DE1625764A1|1967-08-19|1970-01-29|Luk Lamellen & Kupplungsbau|Clutch disc|
    SE414137B|1972-01-12|1980-07-14|Stihl Maschf Andreas|CLUTCH DEVICE FOR ADDITIVES, SEPARATE ADDITIVES FOR ENGINE CHAIN SAW|
    GB1546342A|1977-03-11|1979-05-23|Lakiza R I|Torque-transmitting shafts|
    GB2089000B|1980-12-08|1985-01-30|Honda Motor Co Ltd|Torsional vibration absorber device|
    DE3740756A1|1987-12-02|1989-06-22|Loehr & Bromkamp Gmbh|Torsionally elastic hollow shaft|
    JPH02221732A|1989-02-23|1990-09-04|Toshiba Corp|Torsional vibration damper|
    SE468170B|1991-03-27|1992-11-16|Sunds Defibrator Ind Ab|RAFFINOER|
    JP2568015Y2|1992-02-19|1998-04-08|光洋精工株式会社|Auto tensioner|
    GB9208777D0|1992-04-23|1992-06-10|Venton Walters Roy|Improved transmission shaft|
    JPH07269589A|1994-02-08|1995-10-17|Bando Chem Ind Ltd|Torque limiter, and paper feeding device and business equipment using the torque limitter|
    DE60012924T2|2000-09-08|2005-01-13|SOCIéTé BIC|Slip clutch for torque-limiting power transmission, in particular for a hand-held device for transmitting a film from a carrier tape to a substrate|
    DE10239941A1|2002-03-05|2003-04-03|Abb Turbo Systems Ag Baden|Unit for damping torsional vibrations of a shaft, particularly in turbocharger shafts, comprises a sleeve structure provided with force engagement elements joined to one another by an axial connector member|
    GB2415028A|2004-06-12|2005-12-14|Demag Delaval Ind Turbomachine|An apparatus for damping the torsional excitation of a drive shaft|
    US20060228246A1|2005-04-11|2006-10-12|Ritchie Engineering Company, Inc.|Vacuum pump|
    CN201078426Y|2007-07-25|2008-06-25|黄健|Rotation damping apparatus|
    US20090197690A1|2008-02-06|2009-08-06|Gm Global Technology Operations, Inc.|Damped Axle Shaft|JPS60143718A|1983-12-30|1985-07-30|Dainippon Screen Mfg Co Ltd|Process monitoring method|
    US9546694B2|2013-08-15|2017-01-17|Goodrich Corporation|Flexible couplings for power transmission devices|
    US10677312B2|2018-02-15|2020-06-09|General Electric Company|Friction shaft damper for axial vibration mode|
    CN110509471B|2019-07-24|2021-07-09|南京航空航天大学|Preparation method of hollow annular rubber part|
    CN111998028A|2020-08-11|2020-11-27|北京机电工程研究所|Damper for vibration suppression of spacecraft structure|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA1271/2010A|AT510239B1|2010-07-29|2010-07-29|DEVICE FOR VIBRATING VIBRATIONS IN A DRIVE TRAIN|ATA1271/2010A| AT510239B1|2010-07-29|2010-07-29|DEVICE FOR VIBRATING VIBRATIONS IN A DRIVE TRAIN|
    DK11748544.1T| DK2598769T3|2010-07-29|2011-07-21|Device for damping vibrations in a transmission|
    PCT/AT2011/000310| WO2012012816A1|2010-07-29|2011-07-21|Device for damping vibrations in a drive train|
    CA2806489A| CA2806489C|2010-07-29|2011-07-21|Device for damping vibrations in a drive train|
    KR1020137004885A| KR101821442B1|2010-07-29|2011-07-21|Device for damping vibrations in a drive train|
    RU2013106202/11A| RU2575555C2|2010-07-29|2011-07-21|Device for oscillations dampening in drive gear|
    BR112013002028-8A| BR112013002028B1|2010-07-29|2011-07-21|device for dampening vibrations in a powertrain|
    JP2013520922A| JP5850540B2|2010-07-29|2011-07-21|Device for dampening drive train vibration|
    EP11748544.1A| EP2598769B1|2010-07-29|2011-07-21|Device for damping vibrations in a drive train|
    CN201180037159.5A| CN103052826B|2010-07-29|2011-07-21|For the device that the vibration of power train is carried out to damping|
    US13/812,705| US8998732B2|2010-07-29|2011-07-21|Device for damping vibrations in a drive train|
    CL2013000286A| CL2013000286A1|2010-07-29|2013-01-29|Device for damping vibrations in a drive train comprising a cylindrical shaft, preferably configured as a hollow shaft, which is arranged between the halves of a coupling and is fixedly connected with them and around which at least one ring with friction surfaces|
    [返回顶部]