DE102012202910B4 - sealing arrangement - Google Patents

Abstract

A seal assembly (100) comprising a first member (160) and a second member (190) for sealing the first member (160) extending along an axial direction to an axial contact surface (180) of the second member (190) the first and second components are rotatable relative to each other about the axial direction, comprising: a sealing body (110) mechanically connected to the first component (160); anda sealing lip (120) connected to the sealing body (110) and inclined relative to the axial direction at an angle (130), the sealing lip (120) having a sealing edge (170) attached to the axial contact surface (120). 180) of the second member (190), the axial contact surface (180) extending perpendicular to or extending obliquely to the axial direction; and wherein the sealing lip (120) is configured to receive a stabilizing member (210) configured to apply a force to the sealing lip (120) in a direction (220) perpendicular to the axial direction toward the first component (160) further comprising a clamping member (230) fixing the sealing body (110) on the first member, the clamping member (230) including means for tensioning the clamping member (230) with a screw (280) and a bracket (290), wherein the threads of the screw (280) engage corresponding structures of the clamping member (230) to make the clamping member (230) adjustable in circumference.

Description

Embodiments relate to a sealing arrangement, as used for example in large or heavy machinery, so for example in wind turbines and mining machinery (mining sector).

With large machines, there are always high tolerances and waves, which place high demands on the seals used. In particular, in the case of axially sealing sealing elements, deviations during operation may occur, which may be relatively high.

Axially pressed sealing elements, often also called V-rings, are pressed axially with their sealing edge against a contact surface. For strong tolerances and bends the sealing contact may not be achieved reliably on the entire circumference or only by strong local biases. However, such strong biases can in turn lead to high contact forces, which have an increased wear result or in the worst case even a failure of the seal due to high thermal loads result. On the other hand, there are slight sealing effects on the opposite side, which subsequently deteriorate even more as a result of seal wear and can also lead to leakage.

In addition, the sealing elements used on site, so under difficult service conditions at the site of the machine, can be replaced without having to dismantle the entire machine. For this purpose, the seals are separated, for example, after production at one point in order to bring them over a built-in shaft can. The split point then has to be closed again with a generally complex joining method - depending on the sealing material used, bonding, vulcanization or welding. Alternatively, seals can be extruded for a long time and cut to length according to the application or trimmed in terms of their length and assembled accordingly.

The DE 69 20 048 U refers to a split radial seal while the DE 692 10585 T2 relates to a method for producing a sealing ring. The catalogs "Technical Manual 2007, Simmerrings and Rotary Seals" and "Special Sealing Products 2007" by Freudenberg Simrit GmbH & Co. KG show special sealing products in the form of profiles, cords and hoses as well as other special seals that can be used for a wide variety of sealing applications. Among other things, so the catalog "special gaskets products 2007" on page 110 Hat cuffs and on the sides 111 to 119 different special profiles, oil seals and rotary seals on the sides 165 and 166 of the "Technical Manual 2007 , Simmerrings and Rotary Seals ".

Based on this, therefore, there is a need to provide a seal assembly that allows easier mounting on a component in a mounted state. This requirement is borne by a seal arrangement according to claim 1.

A seal assembly for sealing a first member extending along an axial direction to an axial contact surface of a second member, wherein the first and second members are rotatable relative to each other about the axial direction, according to one embodiment comprises a seal body formed to be mechanically connectable to the first component, and a sealing lip, which is connected to the sealing body and is inclined relative to the axial direction at an angle. The sealing lip has a sealing edge to abut the axial contact surface of the second component, the sealing lip being further configured to receive a stabilizing element configured to apply a force to the sealing lip in a direction perpendicular to the axial direction of the first Exercise component down.

Embodiments based on the finding that the seal assembly for sealing the first component with respect to the axial contact surface of the second component can be facilitated in an assembled state of the first component, by the seal assembly is provided with a sealing lip which is adapted to the Receive stabilizing element so that it exerted a force on the sealing lip in a direction perpendicular to the axial direction toward the first component. In this way, if appropriate, after a separation of the sealing arrangement, these can be slipped over the first component, without the need for a complicated joining process in order to close the sealing arrangement again. Thus, instead of the stabilizing element, a force is exerted on the corresponding separating point, so that the sealing arrangement closes again even without the use of a joining method. In other words, the stabilizing element stabilizes the sealing lip on the axial contact surface of the second component, which is also referred to as the sealing surface. This creates compressive stresses in the seal assembly that can prevent or prevent the opening of a gap at the separation point even without an order.

For this reason, the stabilizing element is also referred to as "connecting element" or "connecting and stabilizing element". Due to the obliquely projecting sealing lip and the stabilizing element, such a sealing arrangement is also referred to as a "spring-loaded V-ring" or as a "spring-loaded V-sealing ring".

In embodiments, the first component can be made for example as a shaft or as a similar component, as an axle or as a body with a cylindrical, conical, polygonal cross-section or as part of a housing. The second component can be designed, for example, as a shaft, axle or as a housing,

In a sealing arrangement according to an embodiment, the sealing lip may have a groove to receive the stabilizing element. As a result, if appropriate, a simple copy of a stabilizing element can also be subsequently inserted into the sealing lip of the sealing arrangement. The groove can be arranged, for example, at a tip of the sealing lip, in the region of the sealing edge.

Of course, as an alternative or as a supplement, a stabilizing element can also be introduced into the sealing lip during the production of the sealing arrangement. This can be done, for example, by means of a vulcanization process or another corresponding process. Of course, it is also possible to connect the stabilizing element in the groove cohesively with the sealing lip, for example, by gluing the stabilizing element with the sealing lip, welded or vulcanized. Here, a material connection is understood as meaning any connection in which the relevant connection partners are held together by atomic or molecular forces. Often, these are non-releasable compounds that can be separated again only by destruction of the connecting means.

In a sealing arrangement according to one embodiment, the sealing arrangement may thus comprise the stabilizing element, for example a tension spring or an O-ring. One, for example, made of a spring wire or a spring steel, possibly circumferential tension spring or an O-ring are easy to manufacture stabilization elements.

A seal assembly according to an embodiment may have a separation point, so that the seal assembly to the first component by a separation of the seal assembly can be applied. In this way, it may be possible to attach the separation point to a position which is advantageous in particular for the sealing arrangement, which may optionally further reduce the risk of opening the separation point during operation relative to another position along the sealing arrangement. For example, the separation point can be arranged in an area in which a smaller force opening the separation point occurs.

This may be of particular interest in sealing arrangements that are not rotationally symmetric. But even with rotationally symmetrical sealing arrangement and for corresponding rotationally symmetrical first components, a corresponding separation point can be integrated, which may make a separation of the seal assembly on site, ie at the site of the machine concerned, which comprises the first component and the second component, unnecessary.

Regardless of whether the separation point is implemented or is only produced during the assembly, the stabilization element compresses the separation point or the gap formed at this point and can thus significantly reduce the dirt entry.

In such a sealing arrangement according to an embodiment, the sealing arrangement may have an excess with respect to a cross-sectional dimension of the first component, for example its diameter thereof. In this way, if necessary, the sealing effect of the sealing edge of the sealing lip can be improved, since in the case of a fit or in the case of an undersize could be a danger that remains after mounting the seal assembly in the sealing lip a gap. However, if the sealing element is made too large in diameter, so there is an excess, this may optionally be clamped together via the stabilizing element, so that compressive stresses arise in the interface of the separation point, which can prevent or prevent an opening of the gap without an order.

A sealing arrangement according to an embodiment may further comprise a clamping element, for example a clamping ring, which is designed to fix the sealing body on the first component. In this way, not only the seal assembly may optionally be fixed with the first component, but it may also be increased by the additional force exerted on the seal assembly clamping force, the tendency of the seal assembly to close the gap at the separation point, be increased. If, for example, the sealing element is manufactured in excess, together with the stabilizing element, the clamping element can optionally clamp the separation point better, which in turn causes the opening of a gap can prevent more effectively at the separation point. Such a clamping element can for example be implemented as a clamping band or clamp, as used for example in the field of hoses.

In a sealing arrangement according to an embodiment, the sealing lip may have a plurality of sealing edges, for example two or three sealing edges. As a result, a sealing effect of the sealing lip can optionally be increased. Likewise, however, by providing a plurality of sealing edges, a stability of the sealing lip due to an increased number of features in the region of the sealing surface or in the region of the axial contact surface can also be increased.

In addition, where appropriate, a wear resistance of the seal assembly or its life can be increased by the use of multiple sealing edges. Due to the occurring during the rotation of the first component to the second component friction of the sealing edge on the axial contact surface, the sealing edge is worn and worn. If there are now several sealing edges in the region of the sealing lip, one of the corresponding sealing edges is typically pressed more strongly against the axial contact surface of the second component, so that it is also subjected to higher wear. In other words, this sealing edge will wear off more quickly until it has reached a degree of wear on which the further or possibly several further sealing edges of the sealing lip contribute to a comparable degree to the sealing effect due to the changed geometric shape of the first, worn sealing edge. Thus, in the case of the integration of a plurality of sealing edges, it is possible for a first to become more heavily worn, until one or more further sealing edges support the more worn sealing edge with respect to the sealing effect.

In the sealing arrangement according to an embodiment, the sealing lip in a region of the plurality of sealing edges may have a circular segment-shaped profile between at least two, for example, but also between three or all sealing edges. This makes it possible, if necessary, to further increase the service life of the sealing arrangement, since a stability of the sealing lip in the region of the sealing edges is increased by the provision of the circular segment-shaped profile between at least two sealing edges, the sealing lip is stiffened in this area, so that the sealing edges defined the axial contact surface are pressed.

In a sealing arrangement according to an embodiment, the sealing lip may be connected either in the axial direction with the sealing body or connected perpendicular to the axial direction with the sealing body. In the second case, the sealing body in the axial direction in a state connected to the first component partially extend between the sealing lip and the first component. This makes it possible, either by attaching the sealing lip in the axial direction of the sealing body to an effectively forming lever arm, which forms the sealing lip of the type to extend, so that the seal assembly, even with larger dislocations or tilting of the first component to the second component Maintaining the sealing effect can ensure longer.

If, however, the sealing lip is connected perpendicular to the axial direction with the sealing body, so that the sealing body partially extends in the axial direction between the sealing lip and the first component, on the other hand, a stability of the seal assembly on the first component and thus possibly a seat of the seal assembly be improved on the first component. Especially in the area of heavily loaded seal assembly and may optionally be improved due to a possible safer fixation of the seal assembly on the first component, the sealing effect. In this case, an opening angle in the profile of the seal arrangement can arise between the sealing lip and the sealing body, which together with material properties of the seal arrangement can determine the mechanical properties, for example a range of movement of the sealing lip. If the opening angle is reduced by an embodiment of the profile, a "stopping effect" can be achieved if appropriate, which restricts the range of movement of the sealing lip.

In a sealing arrangement according to one embodiment, the sealing body and the sealing lip can be made in one piece from an elastic, polymeric plastic, for example, a polyurethane comprising plastic. Furthermore, additionally or alternatively, the first component may be a shaft or a similar component. This makes it possible to produce the seal assembly from a well-suited for their application material in a simple process.

In embodiments, the axial contact surface extends generally perpendicular to the axial direction. However, this can also run obliquely to this, since the sealing effect is achieved by at least one sealing edge, which forms a linear support on the axial contact surface. Deviations from a right angle to the axial direction are therefore generally unproblematic. The direction perpendicular to the axial direction, if the selected cutting plane contains the axial direction - which is the case below - and the seal assembly rotationally symmetric is, then this direction is the radial direction. If the rotational symmetry is missing, the direction perpendicular to the axial direction is nevertheless referred to below as "radial direction".

• 1 zeigt eine Darstellung durch eine Dichtungsanordnung gemäß einem Ausführungsbeispiel;
• 2 und 3 zeigen die in 1 gezeigte Dichtungsanordnung gemäß einem Ausführungsbeispiel bei unterschiedlichen Versetzungen während des Betriebs einer die Dichtungsanordnung umfassenden Maschine; und
• 4a bis f zeigen insgesamt sechs verschiedene Ausführungsformen einer Dichtungsanordnung mit unterschiedlich ausgeformten Dichtungskörper und Dichtungslippen gemäß Ausführungsbeispielen.

Hereinafter, embodiments will be described and explained in detail with reference to the accompanying drawings.

• 1 shows a representation through a sealing arrangement according to an embodiment;
• 2 and 3 show the in 1 shown seal assembly according to an embodiment at different dislocations during the operation of a machine comprising the seal assembly; and
• 4a to f show a total of six different embodiments of a seal assembly with differently shaped seal body and sealing lips according to embodiments.

In the context of the present description, summary reference numbers for objects, structures, and other components will be used when describing the component in question itself or more corresponding components within one embodiment or within several embodiments. Passages of the description which refer to one component are therefore also transferable to other components in other embodiments, unless this is explicitly excluded or if this results from the context. When referring to individual components, individual reference numerals based on the corresponding summary reference numbers are used. In the following description of embodiments, therefore, the same reference numerals designate the same or similar components.

Components which occur multiple times in one exemplary embodiment or in different exemplary embodiments may in this case be embodied identically and / or differently with respect to some of their technical parameters or implemented. For example, it is possible for multiple entities within one embodiment to be identical with respect to one parameter but differently implemented with respect to another parameter.

1 shows a cross-sectional view of a seal assembly 100 according to an embodiment. The seal arrangement 100 has a sealing body 110 and a sealing lip 120 on, which are interconnected and at an angle relative to an axial direction 130 is arranged obliquely. The axial direction corresponds to the in 1 shown embodiment of a direction of a line of symmetry 140 the seal arrangement 100 ,

The seal body 110 is hereby formed on a surface 150 a first component 160 arranged and to be mechanically connected to this. At the in 1 embodiment shown, the angle 130 between the sealing lip 120 and the surface 150 of the first component 160 locked in.

The sealing lip 120 has a sealing edge 170 which is formed and arranged such that this one of an axial contact surface 180 a second component 190 can be applied or adapted. The sealing effect of the seal arrangement 100 is here by the sealing edge 170 and the axial contact surface 180 of the second component 190 causes, why the axial contact surface is also referred to as a sealing surface or sealing surface.

The sealing lip 120 also has a groove 200 on that at a tip of the sealing lip 120 is arranged, ie in an area of the sealing lip 120 , the seal body 110 is averted. In other words, the sealing lip 120 based on the seal body 110 at a distal end the groove 200 on while the sealing lip 120 at its proximal end with the seal body 110 connected is.

In the groove 200 is at the seal assembly 100 out 1 a stabilizing element 210 arranged, which is adapted to apply a force to the sealing lip 120 in one direction 220 perpendicular to the axial direction on the first component 160 exercise. As below, for example in connection with 2 and 3 will be explained in more detail, allows the stabilizing element 210 in conjunction with the sealing lip an improvement in the sealing effect of the sealing edge 170 based on the axial contact surface 180 , as well as a displacement or bonding of the first component 160 with respect to the second component 190 the sealing lip effect can be maintained.

The direction 220 represents in the case of at least partially rotationally symmetric first component 160 the radial direction, while the axial direction through the symmetry line 140 is defined. For example, the first component may be a shaft, but also an axis, a similar component or a body with a cylindrical, cubic, polygonal or square cross-section. The first component may thus be, for example, a part of a housing. The second component 190 may also be a shaft, an axle or a similar component, as well as a Body with a cylindrical, chronic, polygonal or square cross-section. In many applications, the first component is a shaft, while the second component 190 However, a corresponding housing or part of a housing is but, for example in the field of wind turbines, and the first component part of a housing or an axis represent, while the second component is part of a shaft.

Regardless of how the first and / or the second component are accurately implemented, there is a seal assembly 100 According to one embodiment, for example, then useful used when the first component relative to the second component is rotatable or rotatable.

The seal arrangement 100 out 1 also has a clamping element 230 formed on the seal body 110 on the first component 160 to fix. Here, the clamping element 230 For example, a frictional connection between the seal body 110 the first component 160 create or reinforce. For example, is the seal assembly 100 or sealing body 110 manufactured with an oversize, so made with such a tolerance that this actually to For the first component 160 is, can by the clamping element 230 the for fixing the seal assembly 100 necessary force conclusive connection may be created by this only if necessary. Is, however, the seal assembly 100 or sealing body 110 made with a fit, can by the clamping element 230 optionally the frictional connection between the seal assembly 100 and the first component 160 be strengthened. The clamping element 230 can be implemented, for example, as a clamping band or as a clamp, as is also used in hoses (hose clamp).

Basically, a seal arrangement 100 be fixed according to an embodiment also by means of a positive connection or a material connection on the first component. In the case of a positive connection, one of the two connection partners places the other one "in the way" because of its geometric shape, so that the movement of the two connection partners relative to one another is prevented by the geometry. In a non-positive connection, the mechanical connection occurs due to acting between the connection partners static friction, while in a cohesive connection, the connection of the respective connection partners by atomic or molecular forces.

So can the seal body 110 partially corresponding to the clamping element 230 coordinated and designed, circumferential groove 240 have, in which the clamping element 230 intervenes. With respect to the axial direction so the clamping element 230 over side surfaces of the groove 240 positively with the seal assembly 100 or their sealing body 110 be connected.

Thus, in embodiments, alternatively or additionally, a mechanical connection of the seal arrangement 100 or its sealing body 110 with the first component 160 also via a toothing (positive connection) and / or by gluing or welding or another cohesive connection.

In embodiments, in which, however, in particular an easy replacement of the seal assembly 100 is in the foreground, if appropriate, the use of a cohesive connection between the seal body 110 and the first component 160 be less attractive.

A seal arrangement 100 According to an embodiment, which is particularly intended for easy interchangeability, can be designed accordingly so that it can be separated using a simple tool, so that the seal assembly 100 optionally by bending or otherwise deforming around the first component 160 can be applied around. So can a seal arrangement 100 or their components may be made of a material which can be easily cut or otherwise separated using tools available at the location of the machine concerned. In other words, the seal assembly 100 be designed such that it is easily separable.

For example, in the case of one already in the sealing lip 120 integrated stabilizing element 210 this be interrupted at one point, so that when a separation of the seal assembly 100 the stabilizing element 210 does not have to be cut with. In such a seal arrangement 100 can the stabilizing element 210 for example, in the sealing lip 120 be vulcanised.

In embodiments, alternatively or additionally, a separation point may already be provided, at which the seal arrangement 100 and optionally the stabilizing element 210 can also be separated without the use of a tool, so that a gap can be formed in the region of the separation point.

In such a case, the stabilizing element takes over 210 Furthermore, the task of the seal assembly 100 or their sealing lip 120 in the region of the separation point mechanically to each other to squeeze and connect like that. Therefore, the stabilizing element becomes 210 Also referred to as "connecting and stabilizing element" or as "connecting or stabilizing element", as well as the separation point as "pressing site". In particular, if the seal assembly 100 in excess, so for a characteristic measure of a cross-sectional area of the first component 160 is made too large, can over the stabilizing element 210 and optionally via the clamping element 230 the seal arrangement 100 and her sealing lip 120 be clamped together. This results in the region of the separation point on their flanks or end faces compressive stresses that can prevent and prevent an opening of the gap even without the use of an elaborate intercession technique.

In embodiments, the sealing body 110 and the sealing lip 170 often made in one piece from an elastic polymeric plastic. For example, they can be made from a highly wear-resistant yet soft plastic, such as a polyurethane-based plastic. This makes it possible that the sealing lip 120 can be regarded as a lever arm, which has a pivot point with the seal body 110 connected so that due to the elastic properties of the material, the sealing lip 120 to turn around this fulcrum and thus the angle 130 can change.

According to an embodiment, as it is in 1 is also shown, is therefore provided at the outer tip of a sealing lip 120 the seal arrangement 100 a groove 200 for the connecting or stabilizing element 210 (eg tension spring or O-ring) form. This may for example be formed radially encircling and a radially inwardly directed force on the sealing lip 120 exercise. This results in an increased contact force of the at the sealing lip 120 provided sealing edge 170 on a mating or sealing surface 180 with which the sealing edge 170 is in sealing and touching contact. By the bias of the stabilizing element 210 and optionally the clamping element 230 it comes to a stabilization of the sealing lip 120 or edge on the sealing surface 170 , The contact pressure is more constant than in seals without corresponding elements.

The seal arrangement 100 has a separation point so that it on a shaft or a similar component (first component 160 ) attachable without the first component 160 must be dismantled. The connecting or stabilizing element 210 stabilized together with a clamping element 230 (For example, a clamping ring), which is the seal assembly 100 At the shaft, the geometry fixes at a separation point of the seal or also allows installation without joining methods at the corresponding parting surface. Will the sealing element 100 Made in excess of the diameter, it can be clamped together via the element. This results in compressive stresses in the cutting surface, which prevent the formation of a gap at the separation point even without their connection

The contact force, which is decisive for the sealing function, is constant over a larger tolerance range of the components involved. In a Verwinkelung or tilting of the shaft to the axial contact surface 180 , it comes to a stabilization of the sealing element 100 , By increasing the lever arm, the contact force increases with a greater distance of the sealing surface to the seal, as described below with reference to 2 and 3 will be described in more detail.

The described sealing element (seal arrangement 110 ) may consist of a sealing body 110 with clamping band 230 and an obliquely protruding sealing lip 120 (analogous to V-rings) exist. This is new at the (distal) end of the sealing lip 120 located connection and stabilization element 210 that is relatively close to the sealing edge 170 is positioned. The connecting and stabilizing element 210 exerts a radially acting force, resulting in an increased contact pressure of the sealing edge 170 at its mating surface (axial contact surface 180 ) results. The contact force can, for example, perpendicular to the radial force of the connecting and stabilizing element 210 Act.

2 shows the seal assembly 100 out 1 why at this point to the description too 1 is referenced.

The geometry of the seal arrangement 100 as they are in 2 is essentially the same as 1 , This is how the sealing lip points 120 opposite the surface 150 of the first component 160 essentially the same angle 130 on. Corresponding is also a first distance 250 between the surface 150 and the sealing edge 170 identical to the one in 1 shown first distance.

Due to the elastic properties of the material from which the seal assembly 100 from the 1 . 2 and 3 is made, the sealing lip can 120 around a pivot 260 with respect to the seal body 110 turn or turn around this. This can not only the first distance 250 but also a second distance 270 between the fulcrum 260 and a center point or other designated point of the stabilization element 210 change.

The stabilizing element 210 acts, as described above, as a tension spring and exerts a force along the direction 220 out. hereby becomes the sealing edge 170 the sealing lip against the axial contact surface 180 (Sealing surface, planar or counter surface) pressed.

3 shows the seal assembly 100 out 2 , wherein the first component 160 now along the axial direction of the second component 190 has removed. Accordingly, the second distance 270 grown, as by the clamping element 230 the seal arrangement 100 on the first component 160 is fixed and therefore has moved along with them along the axial direction.

Accordingly, the sealing lip 120 on the first component 160 too moved, so the angle 130 and the first distance 250 between the sealing edge 170 and the surface 150 of the first component 160 have decreased. In other words, due to the movement of the first component 160 together with the seal arrangement 100 along the axial direction of the second distance 270 enlarged, while the first distance 250 and the angle 130 have become smaller.

Due to the increase in the second distance 270 compared to the in 2 the situation shown causes the stabilizing element 210 a greater torque due to its along direction 220 applied force. This larger torque tends to increase the contact pressure of the sealing edge 170 to the axial contact surface 180 , This increase in torque due to the decreasing angle 130 Optionally, it may even reduce the force along the direction 220 due to a reduction in the diameter of the stabilizing element 210 compensate or even overcompensate.

Considering the lever arms of the radially acting force in the connecting or stabilizing element 120 , ie in particular the first and the second distance 250 . 270 and the axially acting normal contact force with respect to the fulcrum 260 at different deflections and angles 130 it becomes clear that by increasing the second distance 270 in comparison at 3 to 2 or by reducing the first distance 250 in comparison at 3 to 2 the contact force is increased while the resulting from the material bias contact pressure is lower.

Below are further different designs and forms of sealing lips 120 or their sealing edges 170 shown.

4a shows that already in the 1 to 3 shown embodiment of a seal assembly 100 as a reference to this embodiment with the other in the subfigures b to f to compare.

Unlike in the 1 to 3 selected cross-sectional view shows 4 in their partial representations a to f, the corresponding seal arrangement 100 in a different cross-sectional plane. So are in the partial representations of the 4 not only the actual clamping band of the clamping element 230 but also a device for tensioning the clamping element 230 , which is a bracing-based bracing device. So show the subfigures a to f of 4 one screw each 280 and its holder 290 where the threads of the screw 280 in corresponding structures of the clamping ring of the clamping element 230 engages the clamping element 230 to make adjustable in terms of its scope.

4b shows an embodiment of a sealing arrangement 100 in which the sealing body 110 partially into an area between the first first component 160 (not shown in 4 ) and the sealing lip 120 extends. This is the sealing lip 120 not along the axial direction with the seal body 110 but rather perpendicular to this direction, more specifically along the direction 220 , Here, the seal body 110 in the area between the sealing lip 120 and in 4b not shown first component 160 one of the surface 150 of the first component 160 (both not shown in 4 ) inclined profile. This gives the seal body 110 opposite the sealing body 110 out 4a an additional stability, especially in the field of mechanically heavily loaded seal assemblies 100 can be beneficial.

However, this may also be reduced due to the shorter length of the sealing lip 120 the associated lever arm, so that due to the resulting lower torque and the contact pressure on the sealing edge 170 may be lower. Likewise, for this reason, if necessary, a tolerance range in which the first component 160 to the second component 190 (also not shown in 4 ) can move or shift, lower.

4c shows a variant of the seal assembly 100 out 4b in which the profile of the seal body 110 in the area between the sealing lip 120 and also in 4c Not shown first component in one section is flatter, while in another section of this perpendicular to the surface, not shown 150 of the first component 160 stands. This will cause the movement of the sealing lip 120 on the first component 160 or on the seal body 110 too limited.

In the 4d to 4f are further embodiments of a seal assembly 100 shown differing from the one in 4a shown embodiment only in terms of the design of the sealing lip 120 in the area of the sealing edge 170 different. This is how the in 4c embodiment shown two sealing edges 170 - 1 and 170 - 2 on, with the sealing lip 120 in the area between the two sealing edges 170 a circular segment-shaped profile 300 having a predetermined radius.

By implementing two sealing edges 170 - 1 and 170 - 2 the sealing effect is increased. In addition, the service life can also be increased, since optionally after a wear of a sealing edge 170 in the case of uneven loading of the two sealing edges 170 the respective other sealing edge can support or even replace the first, if it can no longer or no longer completely fulfill its sealing function.

4e shows a further embodiment of a sealing arrangement 100 in which the sealing lip 120 three sealing edges 170-1 . 170-2 and 170-3 having. Two each of the sealing edges 170 are in this case by a circular segment-shaped profile 300-1 and 300-2 the sealing lip 120 separated. Here, too, the increase in the number of sealing edges serves both to increase the sealing effect compared to in 4a shown embodiment, as well as the increase in life, since in the case of wear of a sealing edge 170 their task can be taken over or supported by another of the three sealing edges. So it is often to be assumed in such an embodiment that, depending on the position of the sealing lip 120 and thus depending on the position of the first component 160 opposite the second component 190 not all three sealing edges 170 the axial contact surface 180 of the second component 190 touch.

The circular segment-shaped profiles 300-1 and 300-2 opposite the in 4d shown circular segment-shaped profile 300 a smaller radius. As a result, the rigidity of the sealing lip in the region of the sealing edges 170 increased, especially with regard to increasing the service life from the point of view of taking over the sealing function of a sealing edge 170 from another sealing edge 170 may be positive.

This in 4f embodiment shown a seal arrangement 100 is different from the one in 4d embodiment shown essentially in that the two sealing edges 170-1 and 170-2 a greater distance from the stabilizing element 210 and by compared to the thickness of the sealing lip 120 thin connection structures 310-1 and 310-2 are connected to the sealing lip. Due to the usage structures 310-1 . 310-2 so can the sealing lip 120 with regard to its two sealing edges 170-1 . 170-2 softer to the axial contact surface 180 (not shown in 4 ) adjust as the profile 300 in the field, adding the two connection structures 310-1 and 310-2 meet together, has a similar radius as that in 4d shown embodiment.

sealing arrangements 100 according to embodiments may be used in a variety of applications. In principle, they can be used in all rotary applications where polymeric seals are used. Especially in the field of large machines and heavy machinery, however, they may possibly be used particularly advantageous, since in these disassembly of the corresponding first components, in particular corresponding shafts or axles, often associated with a greater effort. Such are sealing arrangements 100 For example, as sealing solutions used in heavy and large machinery, so for example in the field of wind turbines or in the mining sector (mining sector).

Here, for example, cylindrical roller bearings for supporting corresponding shafts or axles are used, such as in the field of drive drums or during the transport of goods over long distances of eg several 100 m, where the corresponding first components can be exposed to stresses and therefore also possibly deformations. Spherical roller bearings often allow inclinations in the range between 1 ° and 2 °, which in this field of mechanical engineering can lead to vertical or horizontal displacement of several millimeters, for example from 5 mm to 10 mm. So can seal arrangements 100 According to embodiments, for example, in connection with bearings with a diameter of 500 mm to diameters of several meters, for example 10m are used.

Embodiment of a seal arrangement 100 This can be done with very different geometries and other properties of the first and second components 160 . 190 and their materials and in connection with these substances used (eg lubricants) are used. Depending on the material used can also seal arrangements 100 according to one embodiment in a wide range of different temperatures and / or pressures, as well as other application-specific parameters are used.

The features disclosed in the above description, the claims and the drawings may be important both individually and in any combination for the realization of embodiments in their various embodiments and - unless otherwise stated in the description - are combined with each other as desired.

LIST OF REFERENCE NUMBERS

100

sealing arrangement

110

seal body

120

sealing lip

130

corner

140

line of symmetry

150

surface

160

first component

170

sealing edge

180

axial contact surface

190

second component

200

groove

210

stabilizing element

220

direction

230

clamping element

240

groove

250

first distance

260

pivot point

270

second distance

280

screw

290

holder

300

profiles

310

connecting structure

Claims (9)

A seal assembly (100) comprising a first member (160) and a second member (190) for sealing the first member (160) extending along an axial direction to an axial contact surface (180) of the second member (190) the first and the second component are rotatable relative to each other about the axial direction, with the following features: a sealing body (110) mechanically connected to the first component (160); and a sealing lip (120) which is connected to the sealing body (110) and is inclined relative to the axial direction at an angle (130), wherein the sealing lip (120) has a sealing edge (170) which bears against the axial contact surface (180) of the second component (190); wherein the axial contact surface (180) extends perpendicular to the axial direction or extends obliquely thereto; and wherein the sealing lip (120) is configured to receive a stabilizing member (210) configured to apply a force to the sealing lip (120) in a direction (220) perpendicular to the axial direction toward the first member (160) further comprising a clamping member (230) fixing the sealing body (110) on the first member, the clamping member (230) including means for tensioning the clamping member (230) with a screw (280) and a bracket (290), wherein the threads of the screw (280) engage corresponding structures of the clamping member (230) to make the clamping member (230) adjustable in circumference. Sealing arrangement (100) according to Claim 1 in that the sealing lip (120) has a groove (200) to receive the stabilizing element (210). A seal assembly (100) according to any one of the preceding claims, wherein the seal assembly (100) comprises the stabilizing element (210), for example a tension spring or an O-ring. Seal assembly (100) according to any one of the preceding claims, having a separation point, so that the seal assembly (100) to the first component (160) by a separation of the seal assembly (100) can be applied. Sealing arrangement (100) according to Claim 4 in which the seal arrangement (100) has an excess with respect to a cross-sectional dimension of the first component (160), for example its diameter. Sealing arrangement (100) according to one of the preceding claims, wherein the sealing lip (120) has a plurality of sealing edges (170), for example two or three sealing edges (170). Sealing arrangement (100) according to Claim 6 in that the sealing lip (120) has in one area of the plurality of sealing edges (170) a circular segment-shaped profile (300) between at least two, but for example also between three or all sealing edges (170). Sealing arrangement (100) according to one of the preceding claims, wherein the sealing lip (120) is connected either in the axial direction with the sealing body (110), or in which the sealing lip (120) is connected to the sealing body (110) perpendicular to the axial direction, and the sealing body (110) partially in the axial direction in a state connected to the first component (160) between the sealing lip (120) and the first component (160) extends. Sealing arrangement (100) according to one of the preceding claims, in which the sealing body (110) and the sealing lip (120) are manufactured in one piece from an elastic, polymeric plastic, for example a plastic comprising polyurethane, and / or in which the first component (160) a wave is.

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