• 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:
    The invention relates to a shaft (1) with adjustable rigidity, wherein between a first shaft connection (8) and a second shaft connection (15) at least one torsion bar (2) is arranged, which is surrounded by a cladding tube (3), wherein at least one shaft connection (8) at a first end (2a) of the torsion bar (2) is arranged, and wherein preferably between the cladding tube (3) and the torsion bar (2) at least a first damping element (4a, 4b, 4c) is arranged, wherein the cladding tube (3) on at least one end (11, 16) with the torsion bar (2) via at least one connecting element (10, 20, 30) releasably rotatably connected. In order to enable in the simplest possible way a permanent adjustability of the torsional stiffness to adapt the torsional vibration behavior, if necessary, it is provided that the first shaft connection (8) is formed by a first connection flange (7) which is connected to a corresponding first counterflange (9 ) in the region of the first end (11) of the cladding tube (3) via at least one, preferably by at least one screw connection formed first connecting element (10) releasably rotatably connected.
    公开号:AT515433A4
    申请号:T50205/2014
    申请日:2014-03-21
    公开日:2015-09-15
    发明作者:Martin Wetzel；Joachim Schmidt
    申请人:Avl List Gmbh；
    IPC主号:
    专利说明:

    The invention relates to a shaft with adjustable stiffness, wherein between a first shaft connection and a second shaft connection at least one torsion bar is arranged, which is surrounded by a cladding tube, wherein a shaft connection is disposed at a first end of the torsion bar, and preferably between the cladding tube and the torsion bar is arranged at least one damping element. Furthermore, the invention relates to a method for setting different torsional stiffnesses.
    From CH 937 344 A a torsionally elastic, variable-length drive shaft is known, which consists of at least two axially displaceable guided parts. The two shaft parts are mutually variable length connected via parallel to the longitudinal axis of the shaft extending torsion spring rods, wherein the torsion spring rods are mounted with one end axially displaceable in the adjacent shaft parts.
    DE 10 002 259 A1 describes a torque transmission device for a drive train of a motor vehicle with an axially elastic component. In a predetermined radial region of the disk-shaped or annular disk-shaped elastic component, a number of axial partitions distributed over the circumference and corresponding to an axial stiffness to be set is introduced. Such cuts limit the bending stiffness in the axial direction due to the decreasing effective area of the disk-shaped component in the radial direction, so that the number of these cuts a variation of the axial effective stiffness of almost unchanged behavior with very few cuts to a very low axial stiffness at almost complete severed circumference with only a few remaining, the bending stiffness in the radial direction acquiring webs can be achieved. The disadvantage is that a substantially irreversible fixed adjustment of the rotational stiffness takes place through the severing.
    DE 10 2008 035 488 A1 describes a drive shaft with a central element and a cladding tube, wherein the central element and the cladding tube are rotationally connected to each other in a first region and are connected to one another in a second region spaced from the first region in the longitudinal direction of the drive shaft via a damping element , The connection in the first region is rigid and invariable, so that the torsional rigidity is fixed.
    From AT 506 732 Al a shaft with adjustable stiffness is known, wherein between a first shaft portion and a second shaft portion at least one torsion bar is arranged. The shaft has a smaller diameter in the region of the torsion bar than in the region of the two first and second shaft sections. Furthermore, the shaft has at least one axially displaceable tubular sliding sleeve, wherein the first and the second shaft portion of the shaft are connected to one another by the sliding sleeve in a first position and separable in a second position. In this way, the rigidity for adjusting the torsional vibration behavior can be changed repeatedly, although an unintentional shifting of the shift sleeves and thus an unintentional adjustment of the torsional stiffness during operation can not be excluded.
    The object of the invention is to provide a shaft connection in which different torsional stiffnesses can be set permanently but nevertheless variably.
    According to the invention this is achieved in that the cladding tube is at least one end with the torsion bar via at least one preferably formed by a screw, firmly with the cladding tube and the torsion bar releasably connectable connecting element is drehverbindbar. The first shaft connection can be formed by a first connecting flange, which is rotatably connected to a corresponding first counter flange in the region of a first end of the cladding tube via at least one preferably formed by at least one screw, fixed to the cladding tube and the torsion bar releasably connectable first connecting element, wherein Preferably, the flange surfaces of the first flange and the first mating flange are arranged normal to the longitudinal axis of the shaft.
    It is particularly advantageous if the second shaft connection is formed by a second connection flange, which with a corresponding second counter flange in the region of a second end of the cladding tube and / or with a flange at the second end of the torsion bar via at least one preferably formed by at least one screw and fixed to the connection flange on the one hand and cladding tube or the flange at the second end of the torsion bar releasably connectable second and / or third connecting element is drehverbindbar. In this case, at least two mutually facing flange surfaces of the second connecting flange, be arranged normal to the longitudinal axis of the shaft.
    In this case, as many variations as possible to different torsional stiffnesses can be realized if the second connection flange is formed separately from the cladding tube and the torsion bar and is preferably rotatably mounted on the torsion bar.
    For additional damping of torsional vibrations, a damping element can be arranged between the second counter flange and the second connecting flange.
    For torque transmission between the two shaft connections of the shaft, at least one connecting element is required, which rotates about the second connection flange with the flange of the torsion bar at the second end thereof. An increase of the rigidity can be achieved by a further connecting element between the first connecting flange and the first counter flange and / or the second connecting flange and the second counter flange, wherein a single connecting element, the second counter flange, the second connecting flange and the flange at the second end of the torsion bar can connect. A further switching possibility results from the fact that the first connection flange is fixedly connected in rotary manner via a first connection element to the first counter flange and the second connection flange to the second counter flange via one connecting element in each case.
    The fact that the connecting elements are formed by screw, unintentional adjustment of the torsional stiffness is prevented.
    The invention will be explained in more detail below with reference to FIGS.
    Show it
    Fig. 1 shows a shaft according to the invention in a longitudinal section, and
    Fig. 2 to Fig. 8 shows the flow of force through the shaft at different set torsional stiffnesses.
    The figures each show a shaft 1, for example a connecting shaft between a motor and a test stand-side loading unit, with variable rigidity. The shaft 1 has a torsion bar 2, which is surrounded by a cladding tube 3, wherein between the cladding tube 3 and the torsion bar 2 first damping elements 4a, 4b, 4c are arranged. If necessary, bearings 5, 6 are provided between the torsion bar 2 and the cladding tube 3.
    The torsion bar 2 has at a first end 2a to a first flange 7, which forms a first shaft connection 8 for a connecting shaft, not shown. The first connection flange 7 can be connected via at least one first connection element 10 to a first counter flange 9 in the region of a first end 11 of the cladding tube 3, wherein the connection elements 10 can be formed, for example, by a screw connection.
    The torsion bar 2 has, at the second end 2b remote from the first connection flange 7, a flange 12 which adjoins a second connection flange 13, which is rotatably mounted on the torsion bar 12 via a bearing 14. The second connection flange 13 forms a second shaft connection 15 for a connection shaft, not shown.
    At a second end 16 opposite the first end 11, the cladding tube 3 has a second counter flange 17, wherein at least one second damping element 18 is arranged between the second counter flange 17 and the second connecting flange 13. The damping element 18 embodied as a disk can be permanently screwed to the connecting flange 13 (not visible in the figure).
    The flange 12 of the torsion bar 2 is rotatably connected via at least one second connecting element 20 to the second connecting flange 13.
    The second mating flange 17 can be connected to the second damping element 18 via at least one third connection element indicated by reference numeral 30, for example by a connecting screw 21, and possibly also to the second connection flange 13.
    By different application and combination of the first, second and third connecting elements 10, 20, 30 formed, for example, by screw connections, different torsional stiffnesses can be realized in the shaft 1. In FIGS. 2 to 8, in each case the force flow F through the shaft is indicated for the following variants I) to VII). The following describes the path of the force flow for these variants: I) Force flow F:
    screwed fasteners: 20 open fasteners: 10,30 the second connecting element 20 is used to connect the second
    Connecting flange 13 with the flange 12; II) Force flow F:
    screwed connection elements: 10, 30 open connection elements: 20 the first connection element 10 serves to connect the first connection flange 7 with the first counter flange 9, the third connection element 30 serves to connect the second counter flange 17 to the second damping element 18; III) Force flow F:
    screwed fasteners: 30 open fasteners: 10, 20, the third connecting element 30 is used to connect the second
    Gegenflansches 17 with the second damping element 18; IV) Force flow F:
    bolted fasteners: 30 long to 13 open fasteners: 10, 20 is the " long " executed third connecting element 30 is used for
    Connection of the second counter-flange 17 with the second damping element 18 and also with the second connection flange 13; V) Force flow F:
    screwed fasteners: 10, 30 long to 13 open fasteners: 20, the first connecting element 10 is used to connect the first
    Connecting flange 7 with the first flange 9, the " long " executed third connecting element 30 is used for
    Connection of the second counter-flange 17 with the second damping element 18 and also with the second connection flange 13; VI) Force flow F:
    screwed connection elements: 10, 20, 30 open connection elements: - the first connection element 10 serves to connect the first connection flange 7 with the first counter flange 9, the second connection element 20 serves to connect the second connection flange 13 with the flange 12, the third connection element 30 is used for connecting the second counter-flange 17 with the second damping element 18; VII) Force flow F:
    screwed connection elements: 20, 30 open connection elements: 10 the second connection element 20 serves to connect the second connection flange 13 with the flange 12, the third connection element 30 serves to connect the second counter flange 17 with the second damping element 18;
    In variant I, the lowest torsional stiffness is likely to be achieved, in variant V with rigid connection of the connecting flange 13 and the second counter flange 17 and further on the first connecting flange 7, the highest torsional rigidity.
    All three connecting elements 10, 20, 30 can be realized by screw, whereby a permanent, but still modifiable torsional stiffness can be adjusted.
    权利要求:
    Claims (9)
    [1]
    PATENT CLAIMS 1. Shaft (1) with adjustable rigidity, wherein between a first shaft connection (8) and a second shaft connection (15) at least one torsion bar (2) is arranged, which is surrounded by a cladding tube (3), wherein at least one shaft connection ( 8) at a first end (2a) of the torsion bar (2) is arranged, and wherein preferably between the cladding tube (3) and the torsion bar (2) at least a first damping element (4a, 4b, 4c) is arranged, characterized in that the cladding tube (3) is connected at at least one end (11, 16) to the torsion bar (2) via at least one connecting element (10, 20) detachably connectable to the cladding tube (3) and the torsion bar (2), preferably formed by a screw connection , 30) is drehverbindbar.
    [2]
    2. shaft (1) according to claim 1, characterized in that the first shaft connection (8) by a first connection flange (7) is formed, which with a corresponding first counter flange (9) in the region of a first end (11) of the cladding tube ( 3) via at least one, preferably by at least one screw formed, firmly with the cladding tube (3) and the torsion bar (2) releasably connectable first connecting element (10) is drehverbindbar, preferably the flange surfaces of the first connecting flange (7) and the first counter flange (9) are arranged normal to the longitudinal axis (1 ') of the shaft (1).
    [3]
    3. shaft (1) according to claim 1 or 2, characterized in that the second shaft connection (15) by a second connecting flange (13) is formed, which with a corresponding second counter flange (17) in the region of a second end (16) of the Cladding tube (3) and / or with a flange (12) at the second end (2b) of the torsion bar (2) via at least one, preferably formed by at least one screw, and fixed to the second connection flange (13) on the one hand and the cladding tube (3 ) and / or the flange (12) at the second end (2b) of the torsion bar (2) on the other hand releasably connectable second and / or third connecting element (20, 30) is drehverbindbar.
    [4]
    4. shaft (1) according to claim 3, characterized in that at least two mutually facing flange surfaces of the second connecting flange (13), normal to the longitudinal axis (1 ') of the shaft (1) are arranged.
    [5]
    5. shaft (1) according to claim 3 or 4, characterized in that between the second counter flange (17) and the second connection flange (13), a second damping element (18) is arranged, wherein preferably the second damping element (18) with the connection flange (13) is rotatably connected.
    [6]
    6. shaft (1) according to one of claims 3 to 5, characterized in that the second connection flange (13) separately to the cladding tube (3) and the torsion bar (2) and preferably rotatably mounted on the cladding tube (3).
    [7]
    7. A method for setting different torsional stiffness in a shaft (1) according to one of claims 1 to 6, wherein between a first shaft connection (8) and a second shaft connection (15) at least one torsion bar (2) is arranged, which of a cladding tube ( 3), wherein at least one shaft connection (8) at a first end (2a) of the torsion bar (2) is arranged, and wherein preferably between the cladding tube (3) and the torsion bar (2) at least a first damping element (4a, 4b , 4c), characterized in that the cladding tube (3) at at least one end (11, 16) with the torsion bar (2) via at least one, preferably formed by a screw, fixed to the cladding tube (3) and the torsion bar (2) releasably connectable connecting element (10, 20, 30) rotatably connected, preferably screwed, is.
    [8]
    8. The method according to claim 7, characterized in that the first shaft connection (8) forming the first connection flange (7) with a corresponding first counter flange (9) in the region of a first end (11) of the cladding tube (3) via at least one, preferably formed by at least one screw, firmly with the cladding tube (3) and the torsion bar (2) releasably connectable first connecting element (10) rotatably connected, preferably screwed, is.
    [9]
    9. The method according to claim 7 or 8, characterized in that the second shaft connection (15) forming the second connection flange (13) with a corresponding second counter flange (17) in the region of a second end (16) of the cladding tube (3) and / or with a flange (12) at the second end of the torsion bar (2) via at least one, preferably formed by at least one screw, fixed to the second connection flange (13) on the one hand and the cladding tube (3) and / or the flange (12) on the second End (2b) of the torsion bar (2) releasably connectable second and / or third connecting element (20, 30) is rotatably connected, preferably screwed, is. 2014 03 21 Fu / St
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    同族专利:
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    US20160377145A1|2016-12-29|
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    EP3120037A1|2017-01-25|
    JP2017516955A|2017-06-22|
    AT515433B1|2015-09-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US1965742A|1931-01-21|1934-07-10|Junkers Hugo|Driving mechanism for aircraft|
    US5413318A|1991-02-21|1995-05-09|Teeness As|Means for damping vibrations, for example self-generated oscillations in boring bars and similar|
    DE10205932A1|2002-02-12|2003-08-21|Zf Lemfoerder Metallwaren Ag|Anti-roll bar for a motor vehicle|
    JP2006017194A|2004-06-30|2006-01-19|Hitachi Ltd|Torsion spring and stabilizer for vehicle|
    DE102007058764A1|2007-12-06|2009-06-10|Daimler Ag|U-shaped stabilizer bar for chassis of motor vehicle, has stabilization element i.e. pipe element, extending area wise along base, where stabilization element is coupled with base by coupling elements e.g. drum brakes|
    AT507923B1|2009-03-13|2010-11-15|Tectos Oeg|SHAFT CONNECTION|
    US20130300043A1|2010-11-29|2013-11-14|Todd Michael Whitaker|Tubular torsion bar|
    GB929323A|1961-05-17|1963-06-19|Ass Elect Ind|Improved flexible coupling particularly for turbine-generator equipment|
    US4127080A|1977-03-08|1978-11-28|Lakiza Rostislav I|Tubular shaft of a marine line shafting|
    JPS5570639U|1978-11-08|1980-05-15|
    CH634133A5|1979-02-16|1983-01-14|Maag Zahnraeder & Maschinen Ag|DOUBLE JOINT CLUTCH.|
    CA2588061A1|2004-11-16|2006-05-26|Seicon, Limited|Variable stiffness flexible joint|
    JP2007320327A|2006-05-30|2007-12-13|Honda Motor Co Ltd|Variable rigid stabilizer device|
    DE102008035488A1|2008-07-30|2010-02-04|Daimler Ag|drive shaft|
    US9416815B2|2014-10-01|2016-08-16|GM Global Technology Operations LLC|Driveshaft with two-stage stiffness|CN108909399B|2018-07-13|2020-05-19|北京汽车股份有限公司|Automobile transverse stabilizing device and automobile|
    法律状态:
    2019-11-15| MM01| Lapse because of not paying annual fees|Effective date: 20190321 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50205/2014A|AT515433B1|2014-03-21|2014-03-21|Shaft with adjustable stiffness|ATA50205/2014A| AT515433B1|2014-03-21|2014-03-21|Shaft with adjustable stiffness|
    US15/121,253| US20160377145A1|2014-03-21|2015-03-10|Shaft with adjustable rigidity|
    PCT/EP2015/054905| WO2015139999A1|2014-03-21|2015-03-10|Shaft with adjustable rigidity|
    EP15708536.6A| EP3120037A1|2014-03-21|2015-03-10|Shaft with adjustable rigidity|
    JP2016558365A| JP2017516955A|2014-03-21|2015-03-10|Shaft with adjustable stiffness|
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