CN105299069A - Coupler - Google Patents

Abstract

A coupler for compensating for radial offset has two discs, that is, a drive disc and a driven disc, and a compensating element capable of moving in a radial direction relative to each of the disc. The two discs are coplanar and are coupled to the compensating element with aid of an cylindrical roller, wherein the axis of the cylindrical roller is parallel to the axis of the discs.

Description

Coupling

Technical field

The present invention relates to a kind of coupling, described coupling allows the radial deflection between two axles be coupled to each other.The coupling with this function as crosshead coupling or European coupling such as known from DE1704337U and from EP1225357B1.

Background technique

Coupling for compensating radial deflection generally includes two dishes, i.e. drive plate and driven disc, and compensating element, and described compensating element can move relative to each rim radial direction.Such as disclosed in DE19857248C2, the compensating element of crosshead coupling can via tongue-and-groove system and the axle be coupled to each other acting in conjunction.For the manufacture of compensating element, except raw metal, also plastics can be used.Illustratively, at this reference EP0416125A1.

In all, for the manufacture of the parts of the coupling of the radial deflection compensated between the shafts raw materials, the friction occurred between all parts when coupling runs be can not ignore.Should guarantee that the preventive measure of favourable lubricating condition such as describe in so-called DE19857248C2.Except lubricating condition, in the design of European coupling, also consider that face that may be relevant to radial deflection between the axles extrudes.Typically, overcome the radial direction of the coupling of the radial deflection between two axles and axis size is relevant to the moment of torsion transmitted between axle.

Summary of the invention

Basic object of the present invention is, proposes a kind ofly especially to transmit the coupling continuing in relation between performance and friction to improve at structure space and moment of torsion relative to prior art, and described coupling can realize the moment of torsion transmission between axle parallel to each other.

According to the present invention, described object is realized by a kind of coupling for compensating radial deflection according to the present invention.In order to compensate the radial deflection of change between the shafts and the coupling be provided with comprises two dishes, i.e. drive plate and driven disc.Term drive plate and driven disc are only selected distinguish two dishes for language Shangdi and do not relate to the conclusion in the direction of transmitting about moment of torsion at this.Except two dishes, coupling comprises the compensating element of preferably same plate-like, and described compensating element can move along the radial direction of coupling.Compensating element is positioned on the side of two dishes, and wherein said two dishes are arranged in common plane.The connection of the power transmission between compensating element and dish is set up by columniform rolling element, the axis being parallel of its axis and dish.

To join on the one hand in compensating element and join on the other hand each rolling element in a dish this contact compensating element and/or dish, that is drive plate or driven disc side on the profile of at least one incision-like.Thus, when the compensating element radial motion of coupling run duration, the rolls on surfaces of rolling element profile of incision-like at least one illustrate.Preferably, not only compensating element also has each dish to be also configured to, and columniform rolling physical efficiency is moved along the radial direction of corresponding component.

Run with low-down friction under the application for the power transmission between drive plate and compensating element and the power transmission between compensating element and driven disc of rolling element guarantees that coupling has the high moment of torsion that can transmit at the same time.Meanwhile, coupling is extremely economical space saving consisted of in the axial direction the mode making drive plate and driven disc and rabbet each other.In addition, when the moment of torsion that the little structure space that coupling is in axial direction occupied is guaranteed between the axles transmits, only little heeling moment is applied to along on the columniform rolling element of the axle orientation be coupled to each other.

According to a possible design proposal, dish is non-be shaped circularly, especially at least approximate rectangularly and be arranged on another dish be correspondingly shaped leave a blank in portion.At this, be configured with between the discs around gap, described gap allows the variable skew between the dish that is connected with an axle respectively.

Connection between dish and axle realizes by different bindiny mechanisms.Such as, larger one in two dishes can have hole, and described hole can be used for and being spirally connected or riveting of flange, and described flange is connected with in axle.The less dish preferably with rectangular basic shape such as can have flange on the contrary, and described flange is passed in the central opening in compensating element.Described flange such as can be connected with in axle by means of interior teeth portion.

As long as the axle be coupled to each other by coupling is in alignment with each other, the rolling element so remained in the first dish is just preferably placed on common pitch circle with the rolling element remained in the second dish.This means, the medial axis of each columniform rolling element is positioned on unique, virtual cylinder.One possible, in textural simple design proposal, there is just what a pitch circle, described pitch circle exist four columniform rolling elements altogether.At this, two in rolling element in drive plate guide and another two rolling elements guide in driven disc.Side by side, all rolling element contact compensating elements.

According to the design proposal that is improved further, guide in drive plate and have two rolling element devices relative to each other offset with 180 degree.In the corresponding way, also guide in driven disc and have two rolling element devices, wherein the rolling element device of drive plate is turned round relative to the rolling element device of driven disc and is turn 90 degrees.Each in so-called rolling element device comprises multiple, two rolling element especially, and described rolling element radially relative to each other offsets.Guide in the columniform rolling element belonging to rolling element device another recess microscler equally preferably in common, the microscler recess of drive plate or driven disc and at compensating element.Unlike this, for the different rolling element of identical rolling element device, coiling or also can be provided with independent recess on compensating element.

In favourable design proposal, the compensating element that the side of two dishes is arranged has punching press point, and described punching press point is by the minimise friction between compensating element and dish.In the mode of same function, drive plate and driven disc also can have the ridge of approximate point-like, described ridge contact compensating element.In any case, a small amount of punching press point is enough, because coupling need not absorb high axial force usually.Unlike this, the columniform surface of rolling element and dish and compensating element in the operation of coupling, bear obvious higher face load with the surface of the columniform surface interaction of rolling element.In order to described object, surface treatment and/or coating can be stood in corresponding surface in the manufacture of the parts of coupling.

In preferred design proposal, such as four or eight columniform rolling elements altogether of coupling guide in common rolling element maintenance equipment.Two sides that rolling element keeps equipment to be included in coupling are arranged, ringwise holding member substantially respectively, described holding member is connected to each other by pin.At this, each pin is through compensating element and drive plate or driven disc.Each pin is supported with columniform rolling element.By applicable material and member cross-sections, rolling element keeps equipment preferably at least slightly flexibly to form.Thereby, it is possible to smoothing at the operating power spike of coupling and also forms at least slightly flexible characteristic of coupling along the axial direction of axle.Thus, little angular error between the axles can be tolerated simultaneously.

In simple design proposal, columniform rolling element is directly bearing in rolling element and keeps on the pin of equipment.On the contrary, mode of execution that is complicated, that optimize further in friction proposes to use additional supporting element between columniform rolling element and pin.Described supporting element can relate to slide bushing or carrying pin.Rolling element keeps two of the equipment holding members be positioned in the same side of coupling preferably form respectively and be set to, and makes its overwhelming majority be arranged in common plane.The plane that described plane and compensating element are positioned at or drive plate and driven disc are positioned at is closely adjacent, it is---similar with the punching press point of compensating element---for by minimise friction and in contact disc or contact compensating element that wherein holding member can have multiple raised points, described raised points.

Coupling is such as adapted to be mounted within the Power Train of motor vehicle driven by mixed power.At this, coupling can between the mixed power module of vehicle and speed changer.The special advantage of coupling is, it transmits high moment of torsion and simultaneously extremely only produces very little power radially in compact structure in the axial direction, and this advantageously acts on the bearing load in Power Train.In addition, coupling can mount and dismount in a straightforward manner in Power Train.

Elaborate multiple embodiment of the present invention hereinafter with reference to the accompanying drawings.

Accompanying drawing explanation

Fig. 1 illustrates the three-dimensional view of the coupling for compensating radial deflection respectively for twice;

Fig. 2 illustrates two sectional views of the coupling according to Fig. 1;

Fig. 3 illustrates the exploded view of the coupling according to Fig. 1;

Fig. 4 to 6 illustrates the different modification of the support mechanism of the columniform rolling element in coupling;

Fig. 7 and 8 illustrates the sectional axonometric drawing of the different details of coupling;

Fig. 9 to 14 illustrates the diagram being similar to Fig. 1 to 6 of the second embodiment of coupling;

Figure 15 illustrates all parts of the coupling according to Fig. 9 to 14; And

Figure 16 illustrates the part of the coupling according to Fig. 1 and Fig. 9.

Embodiment

Parts that are that correspond to each other and that play same function in principle represent with identical reference character in all of the figs.As long as separately do not indicate, elaboration below not only about the embodiment according to Fig. 1, and about the embodiment according to Fig. 9.In both cases, the coupling that entirety by reference number 1 represents has the function of crosshead coupling.About technical background, with reference to the prior art quoted at the first bruss.

Coupling 1 has i.e. drive plate 2 and the driven disc 3 of two dishes 2,3, and it can be connected with unshowned axle.The variable skew between axle parallel to each other is compensated by coupling 1.

The dish being expressed as drive plate 2 without loss of generality has substrate 4 that is approximate rectangular, rounding, stretches out flange 5 from described substrate center, and described flange extends along the axial direction of coupling 1.Substrate 4 and flange 5 such as can by be connected to each other with being welded and fixed or be configured to single type, such as by component that shaping and/or cutting manufactures.In the illustrated embodiment, substrate 4 wherein the heart, that is there is in the region of the transition to flange 5 circular recess.Unlike this, substrate 4 also can be closed on corresponding position.In both cases, flange 5 can have unshowned interior teeth portion, and the axle that described interior teeth portion is used for having with corresponding outside teeth portion is connected.

The recess that the shape approximation rectangle corresponding to substrate 4 that the substrate 4 of drive plate 2 is arranged in driven disc 3 is shaped, wherein between substrate 4 and driven disc 3, be configured with gap 6, described gap can realize drive plate 2 relative to the movement of driven disc 3 along the radial direction of coupling 1.Substrate 4 and driven disc 3 are rabbeted thus each other, wherein substrate and driven disc be arranged in common, perpendicular to the plane of the spin axis of coupling 1.Driven disc 3 have its radial direction, the hole 7 in the region that is arranged in substrate 4 outside, described hole can be used in being connected with unshowned flange.At this, flange can be permanently connected with same unshowned driven shaft or element via vibration damping connects.One of side of the device be made up of two dishes 2,3 exists the compensating element 8 of same plate-like, its outer diameter and roughly corresponds to substrate 4 overall dimensions radially.Compensating element 8 has four recesses radially extended 9, and described recess distributed symmetrically about the ring week of compensating element 8.In each described recess 9, be bonded to one (Fig. 1 to 8) or two (9 to 15) columniform rolling element 10, wherein the axis parallel of each columniform rolling element 10 is directed in the spin axis of coupling 1.Two rolling elements 10 being arranged in identical recess 9 are called rolling element device 11.In embodiment shown in Fig. 1 to 8, the rolling element 10 of each rolling element device 11 respectively with single is identical.

Two rolling elements 10 of a rolling element 10 of rolling element device 11 or rolling element device 11 (Fig. 9 and its accompanying drawing below) join in the microscler recess 12 in the substrate 4 of drive plate 2 or join in the recess (Ausbuchtung) 13 microscler equally in driven disc 3.Each recess 12 in drive plate 2 has closed edge, and recess 13 is transitioned in the central opening of driven disc 3, is provided with substrate 4 in described opening.

Two in diametrically opposite rolling element device 11 1 with compensating element 8 and on the other hand and drive plate 2 acting in conjunction, and two other, equally at diametrically opposite rolling element device 11 respectively on the one hand with compensating element 8 and on the other hand and driven disc 3 acting in conjunction.Turn 90 degrees relative to turning round with the coefficient rolling element device 11 of driven disc 3 with drive plate 2 coefficient rolling element device 11.All rolling elements 10 of coupling 1 keep guiding in equipment 14 at rolling element.On each side of coupling 1, rolling element maintenance equipment has two substantially annular holding members 15,16, namely inner holding member 15 and outside holding member 16.Two inner holding members 15 are connected to each other by the pin 17 in axial direction through coupling 1.Corresponding content is applicable to the connection between two outside holding members 16.

By the rolling element 10 that the holding member 16 of outside guides the power realized between compensating element 8 and drive plate 2 to transmit.That the holding member 16 of each outside is configured to approximate annular completely and be correspondingly arranged in unique plane.Only in two circumferential areas, the rolling element device 11 guided through outside holding member 16 medially, outside holding member 16 has two offset portion sections 18, and described offset portion section is in axial direction slightly outstanding relative to its remaining part section of the holding member 16 of outside.Can easily with the free space of outstanding realization in each described portion section that forming technique realizes by the described of offset portion section 18, inner holding member 15 can join in described free space.At this, the radially directed casting lug thereon 19 of inner holding member 15 is corresponding to be extended in the free space be made up of offset portion section 18.In addition, inner holding member 15 is formed circlewise, and is positioned at the inner radial of outside holding member 16.At this, the holding member 15 of whole inside is with approximate whole---except offset portion section 18---outside holding member 16 is arranged in one and identical plane.

Due to the substrate 4 of driven disc 3, compensating element 8 and design proposal that rolling element keeps described by equipment 14, all rolling element devices 11 have the identical spacing of spin axis apart from coupling 1, as long as the axle be coupled to each other by means of coupling 1 has identical spin axis.

Rolling element 10 is bearing in the different schemes graphical illustration in Fig. 4 to 6 and in Figure 10 to 12 on the pin 17 of rolling element maintenance equipment 14.As learnt from accompanying drawing, rolling element 10 or directly (Fig. 4,12), by means of slide bushing 20 (Fig. 5,13) or by means of carrying pin 21 (Fig. 6,14) supporting.Slide bushing 20 and carrying pin 21 are called supporting element generally.

In order to by the minimise friction between compensating element 8 and dish 2,3, as seen in the figure 7, be provided with punching press point on compensating element 8 alternatively 22.Raised points (Anlaufpunkte) 23 meets similar object, and described raised points is formed in holding member 15,16.In this article with reference to Fig. 8 and 16.The first half of Figure 16 illustrates the part of the embodiment according to Fig. 1; Lower Half illustrates the part of the embodiment according to Fig. 9 respectively with similar function.Corresponding in the left side of Figure 16 inner holding member 15 is shown, corresponding in right-hand part holding member 16 is shown.Opening 24 can be seen in all holding members 15,16, be fixed with unshowned pin 17 in figure 16 in said opening respectively.Pin 17 fixing in opening 24 such as can be undertaken by joint filling or welding.Rolling element that is whole, that comprise holding member 15,16 and pin 17 keeps equipment 14 slightly flexibly to form, and this is especially favourable when the change of geometrical shape fast absorbed by coupling 1 and load variations.

Reference numerals list

1 coupling

2 drive plates

3 driven discs

4 substrates

5 flanges

6 gaps

7 holes

8 compensating elements

9 recesses

10 rolling elements

11 rolling element devices

12 recesses

13 recesses

14 rolling elements keep equipment

The holding member of 15 inside

The holding member of 16 outsides

17 pins

18 offset portion sections

19 casting lug thereons

20 slide bushings

21 carrying pins

22 punching press points

23 raised points

24 openings

Claims (10)

1. one kind for compensating the coupling (1) of radial deflection, and described coupling has two dishes (2,3), i.e. drive plate (2) and driven disc (3); And have can relative to the compensating element (8) of each radially movement in described dish (2,3),

It is characterized in that, described two dishes (2,3) be arranged in common plane and be coupled by means of columniform rolling element (10) and described compensating element (8), the axis being parallel of described rolling element is in the axis orientation of described dish (2,3).

2. coupling according to claim 1 (1), is characterized in that, one in described dish has the shape of not rounded and is arranged on another inner radial of coiling.

3. coupling according to claim 2 (1), is characterized in that, the described dish of not rounded has the flange (5) through described compensating element.

4. the coupling (1) according to Claims 2 or 3, it is characterized in that, remain on the rolling element (10) in described first dish (2) and remain on the described second rolling element (10) coiled in (3) and be arranged in common pitch circle.

5. coupling according to claim 4 (1), is characterized in that, there is just what a pitch circle, described pitch circle always co-exists in four rolling elements (10).

6. coupling according to claim 4 (1), it is characterized in that, each dish (2,3) be coupled respectively by two rolling element devices (11) and compensating element (8), wherein each rolling element device (11) comprises multiple rolling element (10) spaced along the radial direction of described dish (2,3).

7. coupling according to any one of claim 1 to 6 (1), is characterized in that, the punching press point (22) that described compensating element (8) have at least one in order to contact in described dish (2,3) and be provided with.

8. coupling according to any one of claim 1 to 7 (1), it is characterized in that, columniform described rolling element (10) keeps guiding in equipment (14) at rolling element, on the side that described rolling element keeps equipment to be included in described compensating element (8) and at described two dishes (2, 3) the side opposite with described side is arranged, ringwise holding member (15 respectively, 16), wherein two opposite holding members (15, 16) be connected to each other respectively by pin (17), and on described pin (17), be supported with columniform described rolling element (10).

9. coupling according to claim 8 (1), it is characterized in that, described coupling have columniform described rolling element (10), support mechanism on described pin (17), described support mechanism has supporting element (20 separately, 21), wherein said supporting element (20,21) belongs to the group of the supporting element comprising slide bushing (20) and carrying pin (21).

10. coupling (1) according to claim 8 or claim 9, it is characterized in that, described holding member (15,16) have protruding point (23), described protruding point is set at least one for contacting in following element: drive plate (2), driven disc (3) and compensating element (8).