DE1977640U - DEVICE FOR COUPLING TWO SHAFTS BY USING A CARDAN SHAFT. - Google Patents

Description

*, ■ '■■■ ^β Α.630 310 * -4.11.67

5ROWN, BOVERI & CIE AG

', ..., ", ... Mannheim, December 9th, 1966

MANNHEIM Pat / H / W

102/66

coupling sHiaohon two shafts by means of cardan shaft ¹¹ to patent. . JHBHHHHHHHHHHHHH

The innovation

ΪΜ3Ε & concerns a coupling between two axial ones

and / or subjected to angular and / or parallel displacements fixed shafts by means of a cardan shaft, whereby to connect each of the two ends of the cardan shaft with each one end of the other two shafts a centering articulated lever coupling each with at least three articulated levers serves, one ends of which has spherical joints on the driving shaft and the other ends of which have spherical joints on the attack driven shaft.

In such a coupling, the joints of the two articulated lever couplings are designed as spherical joints. The articulated lever couplings that can be used there are statically determined, ie with axial or cardanic movement between the two shafts there are no tension forces. on. and the restoring forces result only from the cardanic :: movement of the ball joints of the articulated levers, with a Kuoplu_: ~; With four articulated levers or a so-called multi-link coupling, constraining forces occurred during a cardanic movement of the shafts to each other, which when using rubber ball joints are kept within minimal limits due to the possibility of radial spring deflection. If the articulated levers are arranged in the same direction on the circumference as in the arrangement according to the main patent, no constraining force occurs when one shaft moves axially relative to the other; however, it is found here at. an axial movement, a minimal rotation of the shafts against each other ^ instead of. Such central articulated lever couplings are therefore expediently used there; where a large possibility of axial movement of the shafts against each other is desired. If there is an axial deflection, a torque -. r.entübertra £: ung due to the inclination of the articulated lever on an axial force that is, the 'propeller shaft must sein.Bei axially guided by at least one of the articulated levers of the clutches M

above

Hare pad ( cries ftfgvaaiiSchufeanspO is dia su'e ^ t eingsrsicbts; sis deviates from dar Wen- ■

abstract, represent · originally submitted J ~ ^rr "" ^"Λ ~ - ^ * = _{Γ =:} .. ■ '· ~." Ξ---. ..: ¹ .- - d- r? Deviation is not ^ The originally planned. ·.: ■ -— ^ - '~? - - ^ ₁ ■. -. . ν ■. ■ · η anytime ver.ne proof

'' 3472 (llifn2% ° 9 & i! (Rriiiqhen interest gebunre.'tf * i \ ^ yw> wiiwi-,. Vuut. Auj a .- .. vj, t "JiC ^ t ^ iHiion oueh rotocopies or RIm- negative to delivered at the usual prices

ρ _

701/66

described centric articulated lever coupling with the same direction arranged articulated levers are, depending on the direction of rotation, all articulated levers on train or all stressed. In the event of a tensile load on the articulated lever is, based on äie bei © iner Axialvursohifbung the Axial forces occurring in the shafts have a stabilizing effect, as the greater the torque, so does the reaction becomes larger towards the center. In the case of a compressive load, on the other hand, the deflecting axial force increases as the axial movement increases greater. As a result of this difference with regard to the different directions of rotation, these are critical speed behavior and -the amplitudes for the axial movements are different.

The firing lies

zugruncte, -...-.- ι ... · -.- ■ .. ■. .j .... ^ _x . . ^ cu = x. _-O

There would be 2i ^ SS ^ QSS5 [to create a central articulated lever coupling, which has a good cardanic and axial movement possibility with centric guidance of the shafts to one another, but with the with axial and cardanic deflections no axial force occurs and the critical speed behavior in axial Direction, "related to both directions of rotation, is the same ..

innovation

The solution to the task at hand consists of the following:

that at least one of the two articulated lever couplings is at least Γ

2.n articulated lever ", where n is an integer or greater;

than 1 and that one half of the articulated lever in the sense of: Direction of rotation of the coupling and the other half of the articulated lever

arranged in opposite sighting are those at the ends _; . ' the articulated levers arranged joints are more useful

Ball joints made of rubber or similar materials. ^;

• One of the beid.en arranged at the ends of a propeller shaft Gelenickupplungen - has therefore at least four joint lever, wherein; .- half of them are arranged .NIG opposite the other articulated lever gegensin- [_. When the shafts move axially against each other, the articulated levers are deflected. The axial forces that occur when a torque is transmitted and that are caused by the inclined position of the articulated levers cancel each other out, see above; that no axial forces act on the shafts and their bearings, and there is no excitation for an axial oscillation. Even with an axial and Danish movement

* - 3 -

-3- '701/66

of the two shafts to each other, there is the advantage that keftne resulting axial force occurs «.

Since the conditions, i.e. tensile and compressive loads, - also are not changed by reversing the direction of rotation, there is no difference in the critical speed behavior in the case of the invention Arrangement available for different directions of rotation. By suitable coordination of the length of the articulated lever and through Determination of the distance between the articulation points of the individual shafts can be achieved that the angular synchronization accuracy with karda nischer deflection is much larger than with a normal universal joint. With an axial movement of the two shafts towards one another On the other hand, tensile forces occur in one half of the articulated lever, and there is a radial deflection in the rubber ball joints. However, an axial movement does not cause any rotational movement of the shafts to one another, so that axial movements occur in the case of the inventive Arrangement can no longer superimpose the rotary movement ', whereby an ideal synchronization accuracy with an axial Movement is guaranteed. As a result of the radial deflection of the Rubber elements, however, the size of the axial movement is limited. In most use cases, in particular when using this coupling for drives for rail vehicles, this possibility of axial movement is sufficient.

innovation

Embodiments of the H: S ^ S23SMSS ^em external coupling are shown in the drawing and explained in more detail below. 1 and 2 show an articulated lever coupling according to the invention with four articulated levers in a view and in a section

along the lines AB and
the pig. 3 a G-articulated lever coupling with six articulated levers.

In the figures, 1 denotes the cardan shaft and 2 denotes the driving or driven shaft. The shaft 2 is stored in bearings (not shown). With a ring-shaped body firmly connected to the shaft is designated, on the inside of which spherical joints are arranged ₃ on which the articulated levers 31 , 32 act. With the cardan shaft 1, an approximately rectangular body 11 is shown in FIG 3 a star-shaped body 111 is firmly connected. These bodies also have spherical joints 12 near their corners. At the joints 12 engage the

■.; - 4 - ■■ '701/66 ^l

other ends of the joints 31 and 32, respectively. The articulated levers 31 are in the direction of rotation of the shafts and the articulated levers 32 in the opposite direction set direction.

innovation

Couplings according to the ^ SlGXäSiMg; can be used to connect a Cardan shaft with two shafts to be coupled can be used. Depending on the requirements, a cardan shaft can be used at one end a coupling according to the invention and at the other end a plane ^ such a coupling or a coupling can be arranged with articulated levers arranged in the same direction. The use of such couplings is for example in electric traction vehicles both for the coupling 'of the large wheel with the drive wheel, with the cardan shaft is designed as a hollow shaft, as well as for the coupling of the motor shaft, which in this case is designed as a hollow shaft is possible and the pinion of the gearbox. The coupling can also be used to couple an elastically positioned diesel engine serve with a permanently installed electrical generator.

Claims (1)

Mannheim, 11/17/67 BROWN, BOVERI & CIE Pat / H / W Aktiengesellschaft 'Mp.-Hr. 701/66 MANNHEIM Jktenz. ϊ B 69 098 / 47o Gbm Protection claims: Coupling between two asiale and / or angled and / or Fixed shafts exposed to parallel displacements by means of a KarÖ-anwelle, whereby each of the both ends of the cardan shaft with ge one end of the two other shafts each have a centering articulated lever coupling each with at least three articulated levers, one end of which has spherical joints on the driving shaft and the other ends of which engage the driven shaft via spherical joints, characterized in that at least one of the two articulated lever couplings has at least 2. η articulated lever, where η is an integer and greater than 1 and that one half of the articulated lever in the sense of the direction of rotation of the coupling and the other half of the articulated lever arranged in the opposite direction * - £ & - £. Cardan hollow shaft for coupling the large gear with the Ereibradsatz a Sehienentriebzuges at the ends of which a centering articulated lever coupling is arranged, which has at least three articulated levers, the ends of which engage the drive wheel "or the large wheel via spherical joints, characterized in that at least one of the two articulated lever couplings has at least 2. η articulated lever, where η is an integer and greater than 1 and that the one half of the articulated lever is arranged in the sense of the direction of rotation of the coupling and the other half of the articulated lever is arranged in the opposite direction. Kardanliohlwelle for the coupling of the Eitzels one on the ! Driving axle of a rail locomotive working gearbox with the hollow shaft of the iatrive motor the ends of which each have a centering articulated lever coupling is arranged, which has at least three articulated levers, the ends of which 'each have spherical joints on the friction wheel or attack on the large wheel, characterized in that at least JBC letter sheet VHI_3472 (1158.5000 / HB)
1 one of the articulated lever couplings at least 2. η articulated lever has, where η is an integer and greater than 1 and that one half of the articulated levers in the sense of the three-device the coupling and the other half of the articulated lever are arranged in opposite directions 4. Coupling or Karda, hollow shaft according to one of the preceding inepr-üche, characterized in that the articulated lever on their ends made of rubber or similar materials Have ball joints.