DE102018108590B4 - Device for axially connecting two tubular elements - Google Patents

Abstract

The invention relates to a device for axially connecting two tubular elements.

Description

The invention relates to a device for axially connecting two pipe elements, in particular two pipe elements of unequal outside diameter, comprising a coupling device with a first coupling element part that can be assigned to a first pipe element and has a cylinder-like shape in the installed state of the device, and a second pipe element that can be assigned axially with the first pipe element , in the assembled state of the device having a cylindrical shape second coupling device part.

Such a device for connecting two pipe elements, ie, for example, two pipe elements that can be flowed through or flowed through by a fluid, is basically, for. B. from DE 10 2007 061 288 A1 , is known and is used, for example, in the field of civil engineering, ie in particular pipeline construction, or in the field of wastewater or sanitary technology.

A corresponding device requires a high mechanical stability of the pipe elements that can be produced or produced via this connection, as well as a high degree of flexibility or practicability with regard to the possibility of connecting pipe elements, if necessary clearly, of different outside diameters. A corresponding device should be configured accordingly in order to enable an extremely stable connection of a large number of tubular elements, possibly clearly, of different outside diameters. This applies in particular with regard to the bridging of large radial steps required when connecting pipe elements (clearly) with different outside diameters; the device should be mechanically stressed as little as possible, at least in a bridging area typically formed by a joint area of the respective pipe elements to be connected, in particular by material deformation.

The post-published WO 2018/184 864 A1 discloses a device for axially connecting two tubular elements.

The invention has for its object to provide an improved device for axially connecting two tubular elements, which in particular enables bridging of large radial steps without being particularly mechanically stressed in the bridging area, in particular by material deformation.

The object is achieved by a device for axially connecting two tubular elements, in particular unequal outside diameters, according to claim 1. The dependent claims relate to possible embodiments of the device.

The device described here (“device”) is used for the axial connection of two, in particular tubular ones, typically one fluid in operation, i. H. a liquid or a gas, flowable or flowed through pipe elements or pipe element sections (hereinafter the term pipe element is used only) and thus to form an axial, typically tight connection of corresponding pipe elements. The pipe elements to be connected or connected by means of the device are typically arranged opposite one another, in particular abutting, with respective respective end faces or sections and in the operating or assembly state of the device with the formation of an axial connection on the outer circumference of certain functional components of the device Gripped device.

Although with the device, of course, tubular elements (essentially) of the same configuration, i. H. In particular, the same outside diameter can be stably connected, the device is in particular set up, pipe elements of significantly different configuration, i. H. especially far outside of a z. B. production-related, tolerance range lying outside diameter, stable to connect. The device can thus be used to bridge considerable radial steps of up to 100 mm or more between the respective pipe elements to be connected. Corresponding radial steps to be bridged by the device can be attributed to the different configurations, in particular the different outside diameters, of the respective pipe elements to be connected. The connection of the tubular elements which can be produced or produced by means of the device can be formed coaxially or centrally, i. H. the symmetry or central axes of the respective tubular elements coincide (essentially) with the common symmetry or central axis of the device.

In one by means of the device with a second The first pipe element to be connected to the pipe element can be a section, in particular an end section, of a pipe. A second pipe element to be connected to the first pipe element can also be a section, in particular an end section, of a pipe. The device can thus be set up in function of a pipe coupling device for connecting two pipes. In this case, the device can be referred to or regarded as a pipe coupling device. However, a first tubular element to be connected by means of the device to a second tubular element can also be a fixed tubular section, in particular a tubular end section, of a flange device. The second pipe element is typically part of a coupling device of the device. The device can thus be configured as a flange device for connecting a tubular element to a flange device. In this case, the device can be designated or viewed as a flange device.

Of course, regardless of the outside diameter, the device can be used to connect tubular elements made of chemically and physically identical, similar or different materials. For example, the device can be used to connect pipe elements made of building materials, in particular concrete, ceramics, in particular stoneware, plastic, metal, etc.

As a central functional unit, the device comprises a coupling device.

The coupling device comprises, as functional components, a first, typically hollow cylindrical or hollow cylindrical, coupling device part, hereinafter abbreviated as the first coupling device part, a second, typically hollow cylindrical or hollow cylindrical, coupling device part, hereinafter abbreviated as the second coupling device part, and an intermediate connecting part. The first coupling device part can be assigned to a first tubular element or is assigned to the device in the operating or assembly state. The second coupling device part can be assigned to a second pipe element to be axially connected or connected to the first pipe element, or is assigned to the device in the operating or assembly state. The intermediate connection part can be arranged between the two coupling device parts or is arranged in the operating or assembly state of the device; consequently, the two coupling device parts can be connected to one another axially via the intermediate connecting part or are connected to one another in the operating or assembly state of the device. For this purpose, the coupling device parts and the intermediate connecting part are each equipped with suitable mechanical interfaces, which enable an axial coupling or connection thereof.

As mentioned, the first coupling device part and the second coupling device part typically have a hollow cylindrical basic shape or are embodied with or can be embodied as such. Under a hollow cylindrical basic shape are basically also different from a geometrically clear hollow cylinder geometric shapes, such as B. ellipses, ovals, etc. to understand. The diameter of the coupling device parts can typically be changed or reduced, i. H. stretchable or compressible. The coupling device parts represent (essentially) those functional components of the device which encompass the respective tubular elements to be connected to one another on the outer circumference; the first coupling device part encompasses the first tubular element assigned to it in the area of its outer diameter or circumference, the second coupling device part encompasses the second tubular element assigned to it in the area of its outer diameter or circumference. Accordingly, respective coupling device parts form cylindrical contact areas for respective tubular elements in the operating or assembly state of the device; this also applies if a, in particular hollow cylindrical, sealing element is connected between the coupling device parts and the tubular elements.

The intermediate connecting part can (likewise) have a hollow cylindrical, i.e. H. in particular have a ring-like or -shaped, basic shape. It is essential that the intermediate connection part, when the device is in the operating or assembly state, has a conical or shaped basic shape - including a geometrically unambiguous cone, i. H. z. B. to understand arch-like or -shaped, basic shapes. The intermediate connecting part is brought into a corresponding cone-like or -shaped basic shape, in particular in connection with the described bridging of a radial step, which is (clearly) unequal in outside diameter when axially connecting two pipe elements. Overall, a coupling device with a (hollow) cylindrical-cone-like (hollow) cylindrical geometric shape can result in this way, particularly when bridging radial steps. The (hollow) cylindrical sections are formed by the coupling device parts, the conical section is formed by the intermediate connecting part.

At least one first joint element and / or at least one second joint element is formed or arranged on the first coupling device part, on the second coupling device part and on the intermediate connection part. A respective first joint element is designed as an engagement element for engaging in a receiving area of a second joint element. A respective second joint element is designed as a receiving element comprising a receiving area for receiving at least sections of an engagement element of a first joint element. A first joint element can thus be accommodated in a second joint element, whereby at least one axial connection of respective joint elements is likewise formed. On The first and a second joint element are thus set up to interact in the sense of connection partners that can be connected to one another. The interaction of a first joint element with a second joint element thus results in an axial coupling or connection of respective joint elements or the functional components of the coupling device associated therewith.

The coupling device parts and the intermediate connection part are configured via the first and / or second joint elements formed or arranged on them in such a way that the aforementioned axial coupling or connection of the coupling device parts can be formed by interposing the intermediate connection part. A respective first coupling element on the coupling device part side thus corresponds to a respective second coupling element on the connecting part side, a respective second coupling element on the coupling part side accordingly corresponds to a respective first coupling element on the connecting part side, so that with the proviso that respective coupling device parts can be axially coupled or connected to one another with the interposition of the connecting part. any configuration options of respective first and second joint elements result. According to a purely exemplary configuration option, second joint elements are arranged or formed on the coupling device parts and first joint elements are arranged or formed on the intermediate connecting part.

It was mentioned that the interaction of a first joint element with a second joint element results in a coupling or connection of respective joint elements. A first joint element formed or arranged on the first or second coupling device part is set up with a second joint element formed or arranged on the intermediate connection part, in particular in a form-fitting manner, with the formation of a joint connection, i. H. in particular a swivel connection, possibly a ball joint connection, to cooperate between the first or second coupling device part and the intermediate connection part. In an analogous manner, a second joint element formed or arranged on the first or second coupling device part is set up, with a first joint element formed on the intermediate connection part, in particular in a form-fitting manner, with the formation of a joint connection, i. H. in particular a hinge connection to cooperate between the first or second coupling device part and the intermediate connection part.

A engagement element forming a first joint element can e.g. B. be designed as a hinge axis defining, in particular cylindrical, pivot pin or include such. A receiving element forming a second joint element can, for. B. be formed as a, in particular corresponding, pivot pin receptacle or include such.

Respective first joint elements can be received in the respective second joint elements via, for. B. positive and / or non-positive, acting fasteners, for. B. on a first or second coupling device part. With appropriate fasteners it can be, for. B. around respective first joint elements, in particular in the region of a joint axis defined by respective first joint elements, d. H. typically act in the circumferential direction, penetrating fastening bolts or pins or split pins.

The possibility of forming an articulated connection, which, as mentioned, in particular means a swivel connection, between the first coupling device part and the intermediate connecting part and between the second coupling device part and the intermediate connecting part results in a significantly improved device. The articulated connection is set up to absorb axially acting normal forces and radially acting transverse or shear forces and represents a possibility to enable pipe elements (clearly) of different outside diameters without material deformation of the device in the bridging area typically formed by an abutting area of the pipe elements to be connected. It is therefore possible to prevent undesirable deformation-related material reactions, that is to say, for example, the formation of so-called white fractures when the coupling device parts or the intermediate connecting part are formed from certain plastic materials. The articulated connection enables a typically stepless, articulated deflection or angulation of the intermediate connection part relative to the coupling device parts and vice versa; the effort required for this goes to "zero", the bridging of radial steps is thus practically without resistance. The articulated connection enables a very high absorption of radially acting transverse or shear forces, so that transverse or shear-related radial relative movements of the tubular elements to be connected are (almost) excluded in the operating or assembly state of the device. The aforementioned coaxiality of the connection of the tubular elements produced by the device can thus also be achieved when connecting tubular elements (clearly) having an unequal outside diameter or by bridging (considerable) radial steps required for this guarantee. The device thus enables (almost) any tubular element combination of the same or different configuration, ie in particular the same or different outside diameter, to be connected in a stable manner.

The intermediate connecting part is made of a first material and at least one coupling device part is made of a second material that differs from the first material in at least one chemical property, in particular in the chemical composition, and / or in at least one structural, in particular mechanical property. The intermediate connection part and at least one coupling device part are thus formed from different materials.

By designing the intermediate connecting part and the at least one coupling device part from different materials, tailored property profiles can be created for the intermediate connecting part and the respective coupling device part (s), in particular with regard to the use of the device. For use of the device in which, for. B. the intermediate connection part, in particular in comparison to the coupling device parts, for. B. is under special mechanical stress, this can be formed from a mechanically particularly stable material. Similarly, a coupling device part can be formed from a particularly stable material if this z. B. is compared to the intermediate connection part under special mechanical stress. The same applies to other conceivable types of stress, such as. B. exposure to certain, especially corrosive, chemical and / or physical conditions.
Overall, there is an improved device for axially connecting two tubular elements compared to the prior art mentioned at the outset.

The intermediate connection part can e.g. B. from a material of a first material group, d. H. z. B. a metal or a plastic, and the at least one coupling device part made of a material of a different material group from the first material group, d. H. depending on the design of the intermediate connection part z. B. a plastic or a metal. In this variant, the materials forming the intermediate connecting part and the at least one coupling device part differ in at least one chemical property and / or in at least one structural property on the basis of their belonging to different material groups.

However, it is also conceivable that the intermediate connecting part and the coupling device parts made of one or more materials from the same material group, i.e. H. z. B. a metal or a plastic are formed. In this variant, too, the materials forming the intermediate connection part and the at least one coupling device part can differ in at least one chemical property and / or in at least one structural property.

The intermediate connection part and at least one coupling device part can then z. B. from themselves in at least one chemical property, in particular in the chemical composition, and / or in at least one structural property, in particular mechanical property, different and thus different metals are formed. For the example of the formation of the intermediate connection part and the at least one coupling device part each made of a metal, a first metal can be used for the formation of the intermediate connection part and a formation of at least one chemical property and / or at least one of the first metal for the formation of at least one coupling device part a structural property, d. H. in particular at least one mechanical property, distinguishing second metal can be used.

As metals come e.g. B. iron-based metallic materials, d. H. in particular steels, the same or different alloy compositions.

For the execution of the intermediate connection part and the coupling device parts from a metal applies that the intermediate connection part and the coupling device parts z. B. are formed as stamped and / or bent parts. The intermediate connection part and the coupling device parts can thus be produced or have been produced by a stamping and / or bending method.

The intermediate connection part and at least one coupling device part can also z. B. from itself in at least one chemical property, in particular in the chemical composition, and / or in at least one structural property, in particular mechanical property, differing and thus different plastic materials are formed. For the example of the formation of the intermediate connection part and the at least one coupling device part each from a plastic material, a first plastic material can be used for the formation of the intermediate connection part and at least one chemical property and / or at least one of the first plastic material for the formation of at least one coupling device part a structural property, ie in particular at least one mechanical property, distinguishing second plastic material can be used.

For the execution of the intermediate connection part and the one or more coupling device parts made of a plastic material, the intermediate connecting part and the coupling device parts e.g. B. are designed as injection molded parts. The intermediate connection part and the coupling device parts can thus be produced or have been produced by a plastic injection molding process.

The first plastic material can e.g. B. be a first thermoplastic material, the second plastic material may be a second thermoplastic material. It is also conceivable that the first plastic material is a first thermosetting plastic material and the second plastic material is a second thermosetting plastic material. It is also conceivable that the first plastic material is a thermoplastic material and the second plastic material is a thermosetting plastic material, or vice versa.

The first plastic material can e.g. B. a plastic a polyolefin, d. H. z. B. polyethylene, polypropylene, the second plastic material such. B. a technical plastic, such as. B. polyamide, polyacetal, polyaryl ether ketone, polycarbonate, polyester, or vice versa. Other plastic materials - a plastic material is basically also to be understood as a mixture of different plastics - are conceivable.

The first plastic material can have at least one, in particular reinforcing, filler material, in particular reinforcing fiber material, such as, for. B. glass fiber material, the second plastic material can not, especially reinforcing, filler material, or vice versa. If both the first plastic material and the second plastic material contain at least one, in particular reinforcing, filler material, the respective filler materials can differ in at least one chemical property, in particular in the chemical composition, and / or in at least one structural, in particular mechanical, property. The plastic materials can alternatively or additionally in their degree of filling, i. H. differ in their respective proportion or their respective concentration of filler material.

The same applies to a segmented version of the intermediate connection part and the coupling device parts, i. H. respective intermediate connecting part segments and / or respective coupling device part segments can also be formed from chemically and / or structurally different materials. In particular, it is possible that axially and / or circumferentially adjacent intermediate connecting part segments and / or axially and / or circumferentially adjacent coupling device part segments are formed from chemically and / or structurally different materials.

In comparison to at least one coupling device part, in particular both coupling device parts, the intermediate connecting part can also be formed from a different colored material. The intermediate connecting part can therefore have a different color than at least one coupling device part, in particular both coupling device parts. The formation of the intermediate connection part from a compared to at least one coupling device part, i. H. in particular, two coupling device parts, differently colored material can e.g. B. in connection with the ease of installation of the device can be useful, as a person to be installed the device can already be made clear which of the components of the device is the “middle part”. The visibility of the device in a specific assembly or application situation can also be improved. Specifically, the intermediate connection part z. B. be red and the coupling device parts or z. B. white, gray or black.

The same applies to a segmented version of the intermediate connection part and at least one coupling device part, i. H. also respective intermediate connecting part segments and / or respective coupling device part segments can be formed from differently colored materials. In particular, it is possible for intermediate connecting part segments arranged axially and / or circumferentially adjacent and / or coupling device part segments arranged axially and / or circumferentially adjacent to be formed from differently colored materials.

The two coupling device parts are typically made of the same material, since they are typically of identical design.

The articulated connection formed by the interaction of a first articulated element on the first or second coupling device part with a second articulated element formed on the intermediate connecting part or the interaction of a second articulated element formed on the first or second coupling device part with a first articulated element formed on the intermediate connecting part a, typically stepless, pivoting of the intermediate connecting part into several, ie in particular almost any, pivoting positions relative to the first and / or second coupling device part. The intermediate connection part can e.g. B. in an angular range between 0 and ± 180 ° with respect to a central axis of the device, preferably in an angular range between 0 and ± 90 ° with respect to the central axis of the device, can be pivoted relative to a coupling device part. The (stepless) pivotability of the intermediate connecting part relative to the coupling device parts contributes to the mentioned possibility of stably connecting (almost) any tubular element combination of the same or different configuration, ie in particular the same or different outside diameter, to one another with the device.

The articulated connection of the first coupling device part with the intermediate connecting part and the articulated connection of the second coupling device part with the intermediate connecting part is in the operating or assembly state of the device typically in all pivoting positions of the intermediate connecting part relative to the first and / or second coupling device part captive or not detachable. The articulated connection of the first coupling device part with the intermediate connecting part and the articulated connection of the second coupling device part with the intermediate connecting part are thus typically designed such that in the operating or assembly state of the device even in extreme pivot positions, in which the intermediate connecting part is extremely relative to the coupling device parts by correspondingly pivoting is angled or pivoted, a loosening of the hinge connection, for. B. is not possible by moving a receiving element received in a receiving element from the receiving element.

As mentioned, the intermediate connecting part can be brought into a conical or -shaped basic shape in the operating or assembly state of the device; in particular, the intermediate connecting part is brought into a corresponding cone-like or -shaped basic shape in connection with the bridging of a radial step (which is (clearly) unequal outside diameter) required for an axial connection of two pipe elements. The configuration of the conical basic shape of the intermediate connection part is typically realized in the operating or assembly state of the device by a corresponding pivoting of the intermediate connection part to the coupling device parts. The device can thus be formed by pivoting the intermediate connection part relative to the first and / or second coupling device part with a central region which extends in the axial direction between the first and the second coupling device part.

The intermediate connection part can comprise at least one, in particular web-like or -shaped or cuboid-like or -shaped, base section. Individual, several or all of the base section (s) typically represent a rigid component in all geometries. A first joint element, if present, formed on the intermediate connection part can be formed directly on the base section; this applies in particular to web-like basic sections. An intermediate connection part can here, for. B. have a bone or double T-beam-like geometric shape. It is also conceivable that a first joint element formed on the intermediate connection part, if present, can be formed on a shoulder, in particular in the axial direction, projecting from the base section in a web-like manner. A second joint element formed on the intermediate connecting part, if present, can be formed by a recess or recess forming a receiving area in the base section.

The first and / or second coupling device part can also comprise a, in particular cuboid-like or -shaped, base section. A corresponding base section typically represents a component that is rigid in itself. A first joint element, if present, formed on the first and / or second coupling device part can be formed on a shoulder, in particular in the axial direction, projecting from the base section in a web-like manner. A second joint element formed on the first and / or second coupling device part, if present, can be formed by a recess in the base section forming a receiving area.

The recess in a base section of a coupling device part or in a base section of the intermediate connecting part can be formed by at least one, in particular a plurality of, wall element (s) defining the recess of the base section, the at least one or at least one wall element providing axial pull-out protection for a engages in the receiving area engaging element of a first joint element, which prevents an axial movement of the first joint element in the direction of the axially opposite coupling device part in the operating or assembly state of the device. The wall element forming the axial pull-out safety device can encompass and / or overlap sections of an engagement element of a first joint element that engages in the receiving area, in particular in a form-fitting manner. By a Corresponding axial pull-out protection of a first articulated element is thus guaranteed an extremely stable connection of the coupling device parts to the intermediate connecting part in the axial direction. The stability of the connection of two pipe elements that can be produced or produced by means of the device is thus improved overall.

The recess in a base section of a coupling device part or in a base section of the intermediate connection part can furthermore be formed by at least one, in particular a plurality of, wall element (s) defining the recess of the base section, the at least one or at least one wall element providing radial pull-out protection for forms an engaging element of a first articulated element which engages in the receiving area and which prevents a radial movement of the first articulated element relative to the coupling device part in the operating or assembly state of the device. The wall element forming the radial pull-out protection can encompass and / or overlap sections of an engagement element of a first joint element that engages in the receiving area, in particular in a form-fitting manner. A corresponding radial pull-out protection of a first articulated element thus ensures a connection of the coupling device parts to the intermediate connecting part that is extremely stable in the radial direction. The stability of the connection of two pipe elements that can be produced or produced by means of the device is thus improved overall.

A respective recess in a base section of a coupling device part or in a base section of the intermediate connection part can be open in the radial direction with respect to the symmetry or central axis of the device in the radial direction to the outside or inside. This enables simple assembly and disassembly of the device. For assembly of the device, respective engagement elements are arranged in the radial direction in respective recesses. For disassembly of the device, respective engagement elements arranged in respective recesses are removed from the respective recesses in the radial direction.

The axial dimensions (length) of a respective recess in a base section of a coupling device part can in principle be chosen freely. A recess can thus extend partially or completely in the axial direction through the base section of the respective coupling device part. A corresponding web-like shoulder projecting axially from an intermediate connection part-side base section can be dimensioned in the axial direction in such a way that in the assembled state it extends axially completely through a respective recess on the coupling device part side; a web-like extension can thus axially penetrate a base section of a coupling device part, so that a joint element designed or arranged on a web-like extension can rest against an axially outer end of the base section. The radial dimensions (height) of the respective recesses or of the basic sections as a whole can in principle be chosen freely. Through the choice of the axial dimensions (length) of the web-like extension or according to the axial or radial dimensions of the recess, a leverage effect and thus the transmission of forces, ie. H. in particular by transverse or shear forces, the web-like approach can be realized or influenced in a targeted manner. Likewise, the choice of the axial dimensions of the web-like extension or corresponding to the axial recess can prevent undesired angular deflection of the intermediate connecting part relative to the respective coupling device part.

In the operating or assembly state of the device, respective recesses are typically closed, so that engagement elements arranged in them cannot be removed from them. Respective recesses open in the radial direction with respect to the central axis of the device in respective basic sections of a first and / or second coupling device part typically open into a receiving channel that extends in the circumferential direction around the first or second coupling device part for receiving a band, in particular, that spans the first or second coupling device part in the circumferential direction -, cuff or clamp-like, tensioning element. The recesses can thus be closed at least in sections, in particular completely, in the radial direction by a clamping element which can be received or received in the receiving channel, in particular in such a way that an engaging element received in the receiving region cannot be moved in the radial direction out of the recess or the receiving region.

For an exemplary configuration of the coupling device with second joint elements formed or arranged on the coupling device parts and first joint elements formed or arranged on the intermediate connecting part, it is the case that a respective receiving area of a second joint element on the coupling device part side has a first Receiving area section, which, in the operating or assembly state of the device, receives a shoulder projecting from a base section of an intermediate connecting part and a second receiving area section, in particular communicating with the first receiving area section, which, in the operating or assembly state of the device, has a first formed on the web-like approach Joint element takes up, may include. In this way, a particularly compact device can be implemented, particularly in the axial direction. The same naturally applies to other configurations of the coupling device.

A base section of a first and / or second coupling device part can be formed in the region of its free end, which faces an intermediate connection part in the operating or assembly state of the device in the axial direction, with a, in particular curved, guide surface. A base section of an intermediate connecting part can be formed in the region of a free end, which faces a first or second coupling device part in the operating or assembly state of the device in the axial direction, with a possibly corresponding, in particular counter-curved, counter-guide surface. Respective guide and counter-guide surfaces serve on the one hand to enable guided movements of the intermediate connection part relative to the coupling device parts. Respective intermediate guide-side mating guide surfaces are typically movable (in the case of pivoting movements of the intermediate connecting part) relative to the first and / or second coupling device part along respective guide-device-side guide surfaces. On the other hand, respective guide and counter-guide surfaces facing each other in the axial direction serve to absorb forces which may occur in the axial direction during operation of the device. To this extent, the guide or counter-guide surfaces can also be referred to or regarded as axial stop or counter-stop surfaces, which are set up to absorb forces acting in the axial direction. Due to the guide or counter-guide surfaces, which may also be regarded as joint shells, in addition to the guide realized by the first joint elements accommodated in the respective second joint elements, further guidance of the intermediate connection part to respective coupling device parts is possible, which is why the joint connection described is guided twice, so that any desired static Interpretation with regard to axially acting pressure and tensile stresses is possible.

A respective base section on the coupling device part side can be formed with a radial stop surface defining a joint end position of the intermediate connection part relative to the respective coupling device part. The stability of the device can be increased further by defining corresponding joint end positions, since the intermediate connection part can only be angled or pivoted relative to the coupling device parts to a defined extent. A respective radial stop surface can be designed as a ramp surface running in the axial direction with a certain angle of inclination with respect to the central axis of the device. The respective angle of the end position of the joint of the intermediate connection part relative to the respective coupling device part can be defined or defined by the angle of inclination of the ramp surface.

Although described above as examples in the form of a cuboid, each basic section of an intermediate connecting part or respective basic sections of a first and / or second coupling device part can of course also have other basic shapes or geometries, i. H. in particular have other cross-sectional geometries. For example, a base section of an intermediate connection part, as mentioned, can also have a web-like base shape or geometry.

The intermediate connection part can be segmented in the circumferential direction. The segmented and thus multi-part or piece-shaped intermediate connection part can comprise a plurality of intermediate connection part segments which can be connected in the circumferential direction to the intermediate connection part and each comprise at least one base section. Each intermediate connecting sub-segment thus comprises at least one base section. Each intermediate connecting part segment extends in the circumferential direction by a portion of the overall circumferential extension of the intermediate connecting part.

Respective intermediate connecting part segments, in particular in the area of their base section regions which are arranged adjacent to one another in the circumferential direction in the operating or assembly state of the device, can be formed with connecting elements which are designed to connect (in particular (without damage or destruction)) detachable connection of directly adjacent intermediate connecting part segments in the circumferential direction. Respective connecting elements can be used as positive locking elements, i.e. H. z. B. as plug-in elements, locking / snap elements, etc., which cooperate to form a form-fitting connection of respective adjacent intermediate connecting sub-segments, in particular in the circumferential direction.

As mentioned, an interconnection sub-segment comprises at least one base section. For an intermediate connecting sub-segment comprising a plurality of basic sections arranged adjacent to one another in the circumferential direction, it applies that several in Basic sections arranged immediately adjacent to one another can be connected to one another via at least one structural element that is expandable and / or compressible in the circumferential direction, in particular fold-like. Due to the formation or arrangement of corresponding structural elements between basic sections of a respective intermediate connecting part segment which are arranged directly adjacent in the circumferential direction, the intermediate connecting part segment has expandable and / or compressible properties in the circumferential direction. The structural elements are typically designed in such a way that they allow for a spatial expansion and / or compression of a respective intermediate connecting segment. The intermediate connecting part formed from a plurality of corresponding intermediate connecting part segments can thus be stretched or compressed in the circumferential direction in the operating or assembly state of the device, which is advantageous for the aforementioned connection of pipe elements of any kind possible by means of the device.

A corresponding structural element can, for. B. be formed by several angular, in particular V-shaped, mutually aligned structural element sections. Corresponding structural element sections can (largely) form axially extending slot structures. In all cases, corresponding slot structures give sufficient space for a corresponding expansion or compression of the respective intermediate connecting part segments or the intermediate connecting part in the circumferential direction.

Corresponding structural element sections can be spaced apart in such a way that, when the device is in the operating or assembly state, they (essentially) bear directly against one another in the area of the inner circumference of the device. The inner circumference of the intermediate connection part can thus (essentially) be closed when the device is in the operating or assembly state. A possibly existing, in particular hollow cylindrical, connected between the coupling device and the pipe elements to be connected, sealing element is therefore not given a possibility in the radial direction in gap spaces which z. B. would form between adjacent structural element sections in the circumferential direction to be pressed.

Analogous to the intermediate connection part, at least one coupling device part, typically both coupling device parts, can also be designed segmented in the circumferential direction. A segmented and thus multi-part or piece-shaped coupling device part can comprise a plurality of coupling device part segments which can be connected in the circumferential direction to the coupling device part and each comprise at least one base section. Each coupling device sub-segment thus comprises at least one base section. Each coupling device part segment extends in the circumferential direction by a portion of the overall circumferential extension of the respective coupling device part.

Also respective coupling device part segments can be formed with connecting elements, in particular in the area of their base section areas which are arranged adjacent to one another in the circumferential direction in the operating or assembly state of the device, which are designed to connect, in particular (damage or non-destructively) detachable connection of directly adjacent coupling device part segments in the circumferential direction. Respective connecting elements can be used as positive locking elements, i.e. H. z. B. as plug-in elements, snap-in / snap-in elements, etc., which cooperate to form a positive connection of respective adjacent coupling device part segments, in particular in the circumferential direction.

As mentioned, a coupling device part segment comprises at least one base section. For a coupling device part segment comprising a plurality of basic sections arranged adjacent in the circumferential direction, a plurality of basic sections arranged directly adjacent in the circumferential direction can be connected to one another via at least one structural element that is expandable and / or compressible in the circumferential direction, in particular fold-like. As a result of the formation or arrangement of corresponding structural elements between basic sections of a respective coupling device part segment which are arranged directly adjacent in the circumferential direction, the coupling device part segment has expandable and / or compressible properties in the circumferential direction. The structural elements are typically designed in such a way that they allow a circumferential directional expansion and / or compression of a respective coupling device part segment. A coupling device part formed from several corresponding coupling device part segments can thus be stretched or compressed in the circumferential direction in the operating or assembly state of the device, which is advantageous for the aforementioned connection of pipe elements of any kind possible by means of the device.

A structural element can e.g. B. be formed by several angular, in particular V-shaped, mutually aligned structural element sections. Corresponding structural element sections can (largely) form axially extending slot structures. In all cases, corresponding slot structures give sufficient space for a corresponding expansion or compression of respective coupling device part segments or the coupling device part in the circumferential direction.

Corresponding structural element sections can be spaced apart in such a way that, in certain operating or assembly states of the device, they lie (essentially) directly against one another in the area of the inner circumference of the device in the circumferential direction. The inner circumference of the respective coupling device part can then (essentially) be closed when the device is in the operating or assembly state. A possibly existing, in particular hollow cylindrical, connected between the coupling device and the pipe elements to be connected, sealing element is therefore not given a possibility in the radial direction in gap spaces which z. B. would form between structural element sections arranged immediately adjacent in the circumferential direction, to be pressed.

• 1 - 6 je eine ausschnittsweise Darstellung einer Vorrichtung zum Verbinden zweier Rohrelemente gemäß einem Ausführungsbeispiel;
• 7 - 9 je eine Darstellung eines Kupplungseinrichtungsteilsegments einer Vorrichtung zum Verbinden zweier Rohrelemente gemäß einem Ausführungsbeispiel;
• 10 - 12 je eine Darstellung eines Zwischenverbindungsteilsegments einer Vorrichtung zum Verbinden zweier Rohrelemente gemäß einem Ausführungsbeispiel;
• 13 eine ausschnittsweise Darstellung eines Kupplungseinrichtungsteilsegments einer Vorrichtung zum Verbinden zweier Rohrelemente gemäß einem weiteren Ausführungsbeispiel; und
• 14 - 17 jeweils ausschnittsweise Darstellungen eines Kupplungseinrichtungsteils und eines Zwischenverbindungsteils gemäß weiteren Ausführungsbeispielen.

Further advantages and details of the invention result from the exemplary embodiments described below and from the drawings. It shows:

• 1 - 6 each a partial representation of a device for connecting two pipe elements according to an embodiment;
• 7 - 9 each a representation of a coupling device sub-segment of a device for connecting two tubular elements according to an embodiment;
• 10 - 12 a representation of an intermediate connecting sub-segment of a device for connecting two tubular elements according to an embodiment;
• 13 a partial representation of a coupling device sub-segment of a device for connecting two tubular elements according to a further embodiment; and
• 14 - 17 cutouts of a coupling device part and an intermediate connection part according to further exemplary embodiments.

The 1 - 6 each show a section of a device 1 for connecting two pipe elements 2 . 3 according to an embodiment. The device 1 is in the 1 . 4 in sections in a perspective view, in the 2 . 5 each in a view (side view) of the circumferential free ends of the in the 1 . 4 detail shown device 1 and in the 3 . 6 each in a cross-sectional view of the in the 2 . 5 shown views shown.

In the operating or assembly state of the device 1 of course, this has a hollow cylindrical or hollow cylindrical shape in a manner known per se. The symmetry or central axis of the device 1 is marked with "A" in the figures.

The pipe elements to be connected or connected 2 . 3 are arranged with respective respective end faces or sections forming opposite one another, in particular in an abutting manner.

The device 1 is used for the axial connection of two pipe elements 2 . 3 , Although with the device 1 tubular elements 2 . 3 The device is stable (essentially) of the same configuration, ie in particular of the same outside diameter 1 how from the 1 - 6 results, furnished, pipe elements 2 . 3 , significantly different configuration, ie in particular far outside of a z. B. production-related, tolerance range lying outside diameter, stable to connect. By means of the device 1 considerable radial steps can thus be taken (see double arrow S in 6 ), in particular up to 100 mm or more, between the respective pipe elements to be connected 2 . 3 bridged. Based on 1 - 6 it can be seen that the connection of the pipe elements 2 . 3 coaxial or centric, ie the symmetry or central axes of the tubular elements 2 . 3 lie (essentially) in a common symmetry or central axis A of the device 1 is.

The device 1 comprises a coupling device as the central functional unit 4 , The coupling device 4 comprises a first hollow cylindrical coupling device part 5 , a second hollow cylindrical coupling device part 6 and a ring-like interconnection part 7 , The first coupling device part 5 is a first tubular element 2 assignable or assigned. The second coupling device part 6 is the one with the first pipe element 2 connected second pipe element 3 assignable or assigned. The intermediate connector 7 is between the two coupling device parts 5 . 6 arranged; consequently, the two coupling device parts 5 . 6 axially via the intermediate connecting part 7 connected with each other. The coupling device parts 5 . 6 and the intermediate connector 7 are each equipped with suitable mechanical interfaces, which enable a corresponding axial connection.

The coupling device parts 5 . 6 represent (essentially) those functional components of the device 1 represents the one with the other pipe elements to be connected 2 . 3 reach around the outside circumference; the first coupling device part 5 encompasses the first tubular element assigned to it 5 in the area of its outer circumference, the second coupling device part 6 encompasses the second tubular element assigned to it 3 in the area of its outer circumference. Respective coupling device parts 5 . 6 thus form cylindrical contact areas for the respective pipe elements 2 . 3 ; this also applies if between the coupling device parts 5 . 6 and the pipe elements 2 . 3 an optional, in particular hollow cylindrical, sealing element 8th is switched.

As with the 4 - 6 can be seen, the intermediate connection part 7 in the operating or assembly state of the device 1 bring into a conical or - shaped basic shape. The 4 - 6 show that the intermediate connector 7 especially when connecting two tubular elements axially 2 . 3 (clearly) unequal outside diameter required bridging a radial step is brought into a corresponding cone-like or -shaped basic shape.

In the exemplary embodiments shown in the figures are on the first coupling device part 5 and on the second coupling device part, ie in particular in the area of their respective free axial ends, a second joint element 12 educated. A respective second joint element 12 is as a recording area 13 for receiving an engagement element at least in sections 10 a first joint element 9 comprehensive receiving element 14 educated. At the intermediate connection part 7 , ie in particular in the area of its respective free axial ends, are first joint elements 9 educated. A respective first joint element 9 is an engagement element 10 for engaging in a recording area 13 a second joint element 12 educated.

A first joint element 9 forming engagement element 10 is in the exemplary embodiments shown in the figures concretely as a hinge axis GA defining, in particular cylindrical, articulated pin, a second joint element 13 forming receiving element 14 is specifically designed as a pivot pin receptacle in the exemplary embodiments shown in the figures. A respective first joint element 9 can therefore be in a second joint element 13 take up. Respective first and second joint elements 9 . 13 are set up to work together in the sense of interconnectable connection partners. The interaction of first and second joint elements 9 . 13 thus results in an axial coupling or connection of respective joint elements 9 . 13 or the associated functional components of the coupling device 4 ,

The coupling device parts 5 . 6 and the intermediate connector 7 are about the first and second joint elements formed on these 9 . 13 configured such that the mentioned axial connection of the coupling device parts 5 . 6 with the interposition of the intermediate connection part 7 can be trained (see in particular 1 - 6 ). A respective second joint element on the coupling device part side 13 thus corresponds to a respective first joint element on the connection part side 9 , Basically, the proviso is that the coupling device parts 5 . 6 with the interposition of the intermediate connection part 7 couple or connect axially with each other, any configuration options for respective first and second joint elements 9 . 13 ,

In particular, based on the 3 . 6 it can be seen that the parts on the coupling device 5 . 6 trained second joint elements 13 are set up with at the intermediate connection part 7 trained first joint elements 9 , in particular positively, with the formation of an articulated connection, ie a swivel joint, between the respective coupling device part 5 . 6 and the intermediate connection part 7 co.

The formation of an articulated connection between the first coupling device part 5 and the intermediate connection part 7 and between the second coupling device part 6 and the intermediate connection part 7 results in a significantly improved device 1 , The articulated connection represents one possibility, pipe elements 2 . 3 (clearly) different outside diameter without material deformation of the device 1 in the pipe elements typically to be connected by a joint area 2 . 3 enable bridging area formed. The articulated connection enables a stepless articulated deflection or angulation of the coupling device parts 5 . 6 relative to the intermediate connection part 7 and vice versa; the effort required for this goes to “zero”. The articulated connection enables - in addition to the absorption of axially acting normal forces - an extremely high absorption of radially acting transverse or shear forces, so that the device is in the operating or assembly state 1 transverse or shear-related radial relative movements of the pipe elements to be connected 2 . 3 are (almost) excluded; the coaxiality mentioned one by the device 1 produced connection of the tubular elements 2 . 3 can also be used when connecting pipe elements 2 . 3 (Clearly) unequal outside diameter or the necessary bridging of (considerable) radial steps. The device 1 enables (almost) anyone To connect the tubular element combination of the same or different external diameter in a stable manner.

By the interaction of the coupling device parts 5 . 6 trained second joint elements 13 with those on the intermediate connection part 7 trained first joint elements 9 trained articulated connection enables, as mentioned, a continuous pivoting of the intermediate connection part 7 in several, ie in particular almost any, pivot positions relative to the first and / or second coupling device part 5 . 6 , The intermediate connector 7 can e.g. B. in an angular range between 0 and ± 180 ° with respect to the central axis A the device 1 , preferably in an angular range between 0 and ± 90 ° with respect to the central axis A of the device 1 , relative to the coupling device parts 5 . 6 be pivoted. The intermediate connector 7 is in the 4 - 6 each in one relative to the coupling device parts 5 . 6 pivoted pivot position shown.

The articulation of the first coupling device part 5 with the intermediate connector 7 as well as the articulation of the second coupling device part 6 with the intermediate connector 7 is in the operating or assembly state of the device 1 can in all swivel positions of the intermediate connection part 7 relative to the coupling device parts 5 . 6 be captive or impossible to solve. The articulated connection can thus be designed such that in the operating or assembly state of the device 1 , in particular in certain pivot positions in which the intermediate connecting part 7 by correspondingly pivoting strongly relative to the coupling device parts 5 . 6 is angled or pivoted, a loosening of the hinge connection, for. B. by movement of a in a receiving element 14 engaging elements included 13 from the receiving element 14 , not possible.

As mentioned and in the 4 - 6 shown, the intermediate connection part 7 in connection with the axial connection of two tubular elements 2 . 3 Bring (clearly) an unequal outside diameter to bridge a radial step into a corresponding conical or basic shape. The formation of the conical basic shape of the intermediate connecting part 7 is in the operating or assembly state of the device 1 by a corresponding pivoting of the intermediate connection part 7 relative to the coupling device parts 5 . 6 realized. The device 1 is thus by pivoting the intermediate connection part 7 relative to the coupling device parts 5 . 6 with one in the axial direction between the first and the second coupling device part 5 . 6 extending, conical or -shaped central region can be formed or formed.

From the 1 - 6 it can be seen that the intermediate connection part 7 several, in particular cuboid or -shaped, arranged adjacent in the circumferential direction and in the operating or assembly state of the device 1 Basic sections aligned (essentially) in the axial direction 11 includes. Respectively at the intermediate connection part 7 trained first joint elements 9 are exemplary in the embodiment on one, in particular in the axial direction, web-like from the base section 11 outstanding approach 15 trained (see also 10 . 11 ). Alternatively, z. B. also an immediate formation of first joint elements 9 on a web-like base section 11 (see. 17 ) so that the intermediate connection part 7 can have a bone or double T-beam-like geometric shape.

From the 1 - 6 as well as from the 7 - 9 it can also be seen that the first and the second coupling device part 5 . 6 several, in particular cuboid or -shaped, arranged adjacent in the circumferential direction and in the operating or assembly state of the device 1 Basic sections aligned (essentially) in the axial direction 16 includes. The parts on the coupling device 5 . 6 trained second joint elements 12 are each by a respective recording area 13 forming recesses 17 in the basic sections 16 educated.

The recesses 17 in the basic sections 16 the coupling device parts 5 . 6 are the recesses by several 17 defining wall elements 18a - 18c of the respective basic sections 16 educated. The wall elements 18a . 18c form an axial pull-out protection for one in the receiving area 13 engaging engaging element 10 a first joint element 9 which in the operating or assembly state of the device 1 an axial Movement of the engaging first joint element 9 in the direction of the axially opposite coupling device part 5 . 6 prevented. The wall elements forming the axial pull-out protection 18a . 18c can one in the recording area 13 engaging engaging element 10 a first joint element 9 in sections, in particular in a form-fitting manner, encompass or overlap.

The the recesses 17 in the basic sections 16 the coupling device parts 5 . 6 defining walls 18a . 18c also form a radial pull-out protection for one in the receiving area 13 engaging engaging element 10 a first joint element 9 which in the operating or assembly state of the device 1 a radial movement of the engaging first joint element 9 relative to the respective coupling device part 5 . 6 prevented. The wall elements that form the radial pull-out protection 18a . 18c can one in the recording area 13 engaging engaging element 10 a first joint element 9 in sections, in particular in a form-fitting manner, encompass or overlap. The wall elements are for this 18a . 18c with, e.g. B. claw-like, wall element sections 19 . 20 educated.

Based on 7 - 9 it can be seen that the recesses 17 in the respective basic section 16 the coupling device parts 5 . 6 in the radial direction with respect to the central axis A of the device 1 , ie in the radial direction to the outside, are open. Such is a simple assembly and disassembly of the device 1 enabled by respective engaging elements 10 first joint elements 9 for assembly of the device 1 in the radial direction in respective recesses 17 be arranged and each in respective recesses 17 arranged engagement elements 10 first joint elements 9 for disassembly of the device 1 in the radial direction from respective recesses 17 be removed.

Based on 1 - 6 it can be seen that the recesses 17 respective basic sections 16 in the operating or assembly state of the device 1 are closed, so that arranged in these engagement elements 10 cannot be removed from them. Respectively in the radial direction with respect to the central axis A of the device 1 open recesses 17 in respective basic sections 16 the coupling device parts 16 open into a circumferentially extending around the respective coupling device parts, as can be seen from the 2 . 3 respectively. 5 . 6 results from respective radial projections 23 . 24 defined recording channel 21 for receiving the respective coupling device part 5 . 6 in the circumferential direction, in particular band, cuff or clamp-like tensioning element 22 , The recesses 17 are thus in the radial direction by a in the receiving channel 21 recorded clamping element 22 closable, in particular such that one in the receiving area 13 received engagement element 10 not out of the recess in the radial direction 17 or the recording area 13 is movable (cf. 5 . 6 ).

For the configuration of the coupling device shown by way of example in the figures 4 with on the coupling device parts 5 . 6 trained second joint elements 12 and on the intermediate connection part 7 trained first joint elements 9 applies that a respective recording area 13 a second joint element 12 a first recording area section 13a which in the operating or assembly state of the device 1 that of a basic section 11 of the intermediate connection part 7 web-like protruding approach 15 records and one with the first recording area section 13a communicating second recording area section 13b which in the operating or assembly state of the device 1 that on the respective web-like approach 15 trained first joint element 9 records, includes.

From the 7 - 12 further arises that the basic sections 16 the coupling device parts 5 . 6 in the range of their in the operating or assembly state of the device 1 the intermediate connection part 7 in the axial direction facing free ends each with a, in particular curved, guide surface 25 are trained. The basic sections 11 of the intermediate connection part 7 are in the range of their in the operating or assembly state of the device 1 the coupling device parts 5 . 6 in the axial direction facing free ends with, for example, corresponding, in particular oppositely curved, counter-guide surfaces 26 educated. The guide and counter guide surfaces 25 . 26 serve on the one hand, guided relative movements of the intermediate connecting part 7 to the coupling device parts 5 . 6 to enable. The mating guide surfaces on the connecting part side 26 are (with pivoting movements of the intermediate connecting part 7 relative to the coupling device parts 5 . 6 ) relative to the coupling device parts 5 . 6 along respective coupling device part-side guide surfaces 25 movable. On the other hand, the guide and counter-guide surfaces facing each other in the axial direction serve 25 . 26 to this, if necessary during operation of the device 1 absorb occurring forces acting in the axial direction. The guide or counter guide surfaces 25 . 26 To this extent, they can also be referred to or viewed as axial stop or counter-stop surfaces which are designed to absorb forces acting in the axial direction.

Based on 3 . 6 it can be seen that a respective coupling device part-side base section 16 with an articulated end position of the intermediate connection part 7 relative to the respective coupling device part 5 . 6 defining radial stop surface 27 is trained. By defining appropriate joint end positions, the stability of the device can 1 can be further increased because the intermediate connecting part is angled or pivoted 7 relative to the coupling device parts 5 . 6 is only possible to a defined extent. Respective radial stop surfaces 27 are considered in the axial direction with a certain angle of inclination with respect to the central axis A the device 1 ramp-like ramp surfaces are formed. Due to the angle of inclination respective ramp surfaces is the respective angle of the end position of the articulation of the intermediate connecting part 7 relative to the respective coupling device part 5 . 6 Are defined.

From the 7 - 12 it follows that the coupling device parts 5 . 6 as well as the intermediate connection part 7 can each be segmented in the circumferential direction. The coupling device parts 5 . 6 are thus by several in the circumferential direction with each other to form a coupling device part 5 . 6 connectable or connected coupling device sub-segments 5 ' . 6 ' formed the interconnection part 7 is by several with formation of the intermediate connection part 7 Intermediate connecting sub-segments connectable or connected in the circumferential direction 7 ' educated. Each coupling device sub-segment 5 ' . 6 ' as well as each interconnect segment 7 ' extends in the circumferential direction by a portion of the total circumferential direction of the respective coupling device part 5 . 6 or the intermediate connection part 7 ,

An embodiment of a coupling device part segment 5 ' . 6 ' - Corresponding coupling device sub-segments 5 ' . 6 ' are typically identical - is in the 7 to 9 shown. The coupling device part segment 5 ' . 6 ' is in 7 in a first perspective view (top), in 8th in a second perspective view rotated by 180 ° (underside) and in 9 shown in a longitudinal section.

The coupling device part segment 5 ' . 6 ' is in the range of its in the operating or assembly state of the device 1 in the circumferential direction adjacent base portion areas with connecting elements 28 . 29 formed, which for, in particular (damage or non-destructive) detachable connection of directly adjacent coupling device part segments 5 ' . 6 ' are formed in the circumferential direction. Respective fasteners 28 . 29 are designed in the exemplary embodiment as form-locking elements, that is to say, for example as plug-in elements, that is to say as radially oriented plug-in sections and associated plug-in receptacles, which form a form-fitting connection of respective adjacent coupling device part segments 5 ' . 6 ' , especially in the circumferential direction.

Based on 7 - 9 it can be seen that a coupling device part segment 5 ' . 6 ' several basic sections 16 includes. However, a configuration of a coupling device part segment is also conceivable 5 ' . 6 ' with only one (single) basic section 16 , For that in the 7 - 9 shown, a plurality of basic sections arranged adjacent in the circumferential direction 16 comprehensive coupling device part segment 5 ' . 6 ' applies that the basic sections arranged immediately adjacent in the circumferential direction 16 in each case via a structural element that is expandable and / or compressible in the circumferential direction, in particular fold-like 30 are interconnected. Through the formation or arrangement of corresponding structural elements 30 between basic sections arranged immediately adjacent in the circumferential direction 16 has the coupling device part segment 5 ' . 6 ' in the circumferential direction expandable and / or compressible properties. The structural elements 30 are designed in such a way that they expand and / or compress the circumferential direction of the coupling device part segment 5 ' . 6 ' enable. One from several corresponding coupling device sub-segments 5 ' . 6 ' formed coupling device part 5 . 6 can be in the operating or assembly state of the device 1 then stretch or compress in the circumferential direction.

Based on 8th it can be seen that a structural element 30 by means of a plurality of angled, in particular V-shaped, structural element sections aligned with one another 30a . 30b can be trained. Through appropriate structural element sections 30a . 30b axially extending slot structures are formed, which have sufficient space for a corresponding expansion or compression of the coupling device part segments 5 ' . 6 ' or the coupling device part 5 . 6 give in the circumferential direction.

An embodiment of an interconnect sub-segment 7 ' - Corresponding intermediate connecting sub-segments 7 ' are typically identical - is in the 10 to 12 shown. The interconnect sub-segment 7 ' is in 10 in a first perspective view (top), in 11 in a second perspective view rotated by 180 ° (underside) and in 12 shown in a longitudinal section.

The interconnect sub-segment 7 ' is in the range of its in the operating or assembly state of the device 1 in the circumferential direction adjacent base portion areas with connecting elements 31 . 32 formed, which for, in particular (damage or non-destructive) detachable connection of directly adjacent intermediate connecting sub-segments 7 ' are formed in the circumferential direction. Respective fasteners 31 . 32 are in the exemplary embodiment as form-locking elements, that is, for example, as plug-in elements, that is, as exemplary radially aligned plug-in sections and associated Plug-in receptacles, which, with the formation of a positive connection of respective adjacent intermediate connecting sub-segments 7 ' , especially in the circumferential direction.

Based on 10 - 12 it can be seen that an interconnect sub-segment 7 ' several basic sections 11 includes. However, a configuration of an intermediate connecting sub-segment is also conceivable 7 ' with only one (single) basic section 11 , For that in the 10 - 12 shown, a plurality of basic sections arranged adjacent in the circumferential direction 11 comprehensive interconnect segment 7 ' applies that the basic sections arranged immediately adjacent in the circumferential direction 11 in each case via a structural element that is expandable and / or compressible in the circumferential direction, in particular fold-like 33 are interconnected. Through the formation or arrangement of corresponding structural elements 33 between basic sections arranged immediately adjacent in the circumferential direction 11 has the intermediate connector segment 7 ' in the circumferential direction expandable and / or compressible properties. The structural elements 33 are designed in such a way that they create a spatial expansion and / or compression of the intermediate connecting segment 7 ' enable. That from several corresponding intermediate connecting sub-segments 7 ' formed intermediate connection part 7 can be in the operating or assembly state of the device 1 then stretch or compress in the circumferential direction.

Based on 11 it can be seen that a structural element 33 by means of a plurality of angled, in particular V-shaped, structural element sections aligned with one another 33a . 33b can be trained. Through appropriate structural element sections 33a . 33b axially extending slot structures are formed, which have sufficient space for a corresponding expansion or compression of the intermediate connecting part segment 7 ' or the coupling device part 5 . 6 give in the circumferential direction.

Corresponding structural element sections 33a . 33b are spaced such that they are in the operating or assembly state of the device 1 in the area of the inner circumference of the device 1 lie directly against one another in the circumferential direction. The inner circumference of the intermediate connection part 7 can in the operating or assembly state of the device 1 hence (essentially) be closed. One between the coupling device 4 and the pipe elements to be connected 2 . 3 switched sealing element 8th there is no possibility in radial gap spaces, which z. B. between structural element sections arranged immediately adjacent in the circumferential direction 33a . 33b would form to be pressed.

13 shows a section of a coupling device part segment 5 ' . 6 ' according to a further embodiment.

Based on 13 it can be seen that respective structural elements 30 z. B. also by fork-like in the axial direction or shaped from the base section 16 protruding structural element sections 30a . 30b can be formed. The arrangement and alignment of the structural element sections 30a . 30b results in slot structures which are open in the axial direction and which have sufficient space for a corresponding expansion or compression of respective coupling device part segments 5 ' . 6 ' give in the circumferential direction.

The 14 - 17 each show sections of a coupling device part 5 . 6 or an intermediate connection part 7 according to further embodiments.

Based on 14 - 16 are further geometric-constructive configurations of the first and second joint elements 9 . 12 can be seen from the 17 is a further embodiment of an intermediate connection part 7 or intermediate connecting segment 7 ' seen.

In the in 14 The exemplary embodiment shown are first joint elements 9 in the form of corresponding engagement elements 10 on a coupling device part-side base section 16 educated. With the engaging elements 10 it is a joint axis defining a joint axis GA, in particular cylinder-like. Second joint elements 12 in the form of corresponding corresponding reception areas 13 forming receiving elements 14 are on a connecting portion side base portion 11 educated.

Also in the 15 The exemplary embodiment shown are first joint elements 9 in the form of corresponding engagement elements 10 on a coupling device part-side base section 16 educated. With the engaging elements 10 it is in turn a joint pin defining a joint axis GA, in particular a cylinder-like one. Second joint elements 12 in the form of corresponding corresponding reception areas 13 forming receiving elements 14 are on a connecting portion side base portion 11 educated. The receiving part-side receiving areas 13 are set up, the coupling device part-side engagement elements 10 to grasp in sections; consequently, the engaging elements 10 in the operating or assembly state of the device 1 in sections in the recording areas 13 added.

Also in the 16 The exemplary embodiment shown are first joint elements 9 in the form of corresponding engagement elements 10 on a coupling device part-side base section 16 educated. With the engaging elements 10 it is in turn a joint pin defining a joint axis GA, in particular a cylinder-like one. Second joint elements 12 in the form of corresponding corresponding reception areas 13 forming receiving elements 14 are on a connecting portion side base portion 11 educated. The receiving part-side receiving areas 13 are in turn set up, the coupling device part-side engagement elements 10 to grasp in sections; consequently, the engaging elements 10 in the operating or assembly state of the device 1 in sections in the recording areas 13 added.

In the in 17 shown embodiment has the base section 11 of the intermediate connection part 7 or the intermediate connecting segment 7 ' a web-like basic shape. The first joint elements 9 are directly on the web-like base section 11 formed so that the intermediate connection part 7 has a bone or double T-beam-like geometric shape.

For all exemplary embodiments, the intermediate connecting part applies 7 made of a first material and at least one coupling device part 5 . 6 is formed from a second material that differs from the first material in at least one chemical property, in particular in the chemical composition, and / or in at least one structural, in particular mechanical property. The intermediate connector 7 and at least one coupling device part 5 . 6 are made of different materials.

For the formation of the intermediate connection part 7 can be a first plastic material and for the formation of the coupling device parts 5 . 6 a second plastic material differing from the first plastic material in at least one chemical property and / or differing in at least one structural property, ie in particular at least one mechanical property.

The same applies to a segmented version of the intermediate connection part 7 and the coupling device parts 5 . 6 , ie also respective intermediate connecting part segments and / or respective coupling device part segments can be formed from chemically and / or structurally different materials. In particular, it is possible that axially and / or circumferentially adjacent intermediate connecting part segments and / or axially and / or circumferentially adjacent coupling device part segments are formed from chemically and / or structurally different materials.

Furthermore, it is conceivable that the intermediate connection part 7 compared to at least one coupling device part 5 . 6 , in particular both coupling device parts 5 . 6 , is made of a different colored material.

Likewise, respective intermediate connecting part segments and / or respective coupling device part segments can be formed from differently colored materials. In particular, it is possible for intermediate connecting part segments arranged axially and / or circumferentially adjacent and / or coupling device part segments arranged axially and / or circumferentially adjacent to be formed from differently colored materials.

The intermediate connector 7 and the coupling device parts 5 . 6 are z. B. designed as injection molded parts.

Claims (19)

Device (1) for axially connecting two pipe elements (2, 3), comprising: a coupling device (4) with a first coupling device part (5) which can be assigned to a first pipe element (2) and which has a cylindrical shape when the device (1) is in the installed state, a second coupling device part (6) which can be axially connected to the first pipe element (2) and which has a cylindrical shape when the device (1) is in the installed state, and an intermediate connecting part (7) which can be arranged between the two coupling device parts (5, 6) ), the two coupling device parts (5, 6) being connectable or connected axially to one another via the intermediate connecting part (7), wherein - a first joint element (9) is formed on the first and on the second coupling device part (5, 6), which designed as an engagement element (10) for engagement in a receiving area (13) of a second articulated element (12) and / or a second joint element (12) is formed, which is designed as a receiving element (14) comprising a receiving region (13) for receiving at least sections of an engagement element (10) of a first articulated element (9), - on the intermediate connecting part ( 7) a first joint element (9) is formed, which is designed as an engagement element (10) for engaging in a receiving area (13) of a second joint element (12), and / or a second joint element (12) is designed as one Receiving area (13) for receiving an engagement element (10) of a first joint element (9) comprising receiving element (14), at least in sections, - a first joint element (9) formed on the first or second coupling device part (5, 6) being set up, with a on the intermediate connecting part (7) formed second joint element (12) to form an articulated connection between the first or zw a coupling device part (5, 6) and the intermediate connection part (7), or a second joint element (12) formed on the first or second coupling device part (5, 6) is set up, with a first joint element (9) formed on the intermediate connection part (7) ) to form an articulated connection between the first or second coupling device part (5, 6) and the intermediate connection part (7), the intermediate connection part (7) made of a first material and at least one coupling device part (5, 6) made of a different material is formed in at least one chemical property and / or in at least one structural property differing second material, the intermediate connecting part (7) made of a material of a first material group and at least one coupling device part (5, 6) made of a material different from the first material group second material group ppe is formed, or the intermediate connection part (7) and the coupling device parts (5, 6) are formed from one or more materials of the same material group, the intermediate connection part (7) and at least one coupling device part (5, 6) being composed of at least one chemical Property and / or plastic materials which differ in at least one structural property, or the intermediate connecting part (7) and at least one coupling device part (5, 6) are formed from at least one chemical property and / or metals which differ in at least one structural property , Device after Claim 1 , characterized in that the articulated connection formed by the interaction of a first articulated element on the first or second coupling device part (5, 6) with a second articulated element (12) formed on the intermediate connecting part (7) or the articulated connection on the first or second coupling device part (5, 6) formed second joint element (12) with a first joint element (9) formed on the intermediate connecting part (7) allows a pivoting of the intermediate connecting part (7) into several pivot positions relative to the first and / or second coupling device part , Device after Claim 2 , characterized in that the articulated connection formed by the interaction of a first articulated element on the first or second coupling device part (5, 6) with a second articulated element (12) formed on the intermediate connecting part (7), or the articulated connection on the first or second coupling device part (5, 6) formed second joint element (12) with a first joint element (9) formed on the intermediate connecting part (7), a pivoting of the intermediate connecting part (7) into several pivot positions relative to the first and / or second coupling device part in an angular range between 0 and 180 ° with respect to a central axis (A) of the device (1), preferably in an angular range between 0 and 90 ° with respect to the central axis (A) of the device (1). Device after Claim 2 or 3 , characterized in that the articulated connection of the first coupling device part (5) with the intermediate connecting part (7) and the articulated connection of the second coupling device part (6) with the intermediate connecting part (7) in all pivoting positions of the intermediate connecting part (7) relative to the first and / or second Coupling device part (5, 6) is not detachable. Device according to one of the preceding claims, characterized in that the intermediate connection part (7) comprises at least one base section (11), a first joint element (9) formed on the intermediate connection part (7) on the base section (11) or on one, in particular in Axial direction, web-like projection (15) projecting from the base section (11), and / or a second joint element (12) formed on the intermediate connecting part (7) is formed by a recess in the base section (11) forming a receiving region (13) is. Device according to one of the preceding claims, characterized in that the first and / or second coupling device part (5, 6) comprises a base section (16), a first joint element (9) formed on the first and / or second coupling device part (5, 6) ) is formed on a shoulder projecting from the base section in the manner of a web, and / or a second joint element (12) formed on the first and / or second coupling device part (5, 6) is formed by a receiving area (13) Recess (17) is formed in the base section (16). Device after Claim 5 or 6 , characterized in that the recess (17) is formed by at least one wall element (18a-18c) defining the recess, the at least one or at least one wall element (18a-18c) providing an axial pull-out safety device for one which engages in the receiving region (13) Engagement element (10) of a first articulated element (9), which prevents axial movement of the first articulated element (9) in the assembled state of the device (1). Device after Claim 7 , characterized in that the recess (17) is formed by at least one wall element (18a-18c) defining the recess, the at least one or at least one wall element (18a-18c) providing an axial pull-out safety device for one which engages in the receiving region (13) Engagement element (10) of a first articulated element (9), which in the assembled state of the device (1) prevents axial movement of the first articulated element (9) in the direction of the axially opposite coupling device part (5, 6). Device according to one of the Claims 5 to 8th , characterized in that the recess (17) is formed by at least one wall element (18a - 18c) defining the recess (17), the at least one or at least one wall element (18a - 18c) providing radial pull-out protection for a into the receiving area ( 13) engaging engagement element (10) of a first articulated element (9), which prevents radial movement of the first articulated element (9) in the assembled state of the device (1). Device according to one of the Claims 5 to 9 , characterized in that the recess (17) is open in the radial direction with respect to the central axis (A) of the device (1). Device after Claim 10 characterized in that the recess (17) formed in a coupling device part (5, 6) is open in the radial direction with respect to the central axis (A) of the device (1), wherein it extends in a circumferential direction around the first or second coupling device part ( 5, 6) extending receiving channel (21) for receiving a clamping element (22) spanning the first or second coupling device part (5, 6) in the circumferential direction, the recess (17) opening in the radial direction by a clamping element received in the receiving channel (21) (22) can be closed at least in sections. Device according to one of the Claims 5 to 11 , characterized in that a receiving area (13) formed in a coupling device part (5, 6) comprises a first receiving area section (13a) which, in the installed state of the device (1), has a shoulder which projects from a base section (11) of an intermediate connecting part (7) (15) and includes a second receiving area section (13b) which, in the assembled state of the device (1), receives a first joint element (9) formed on the web-like extension (15). Device according to one of the Claims 5 to 12 , characterized in that a base section (16) of a first and / or second coupling device part (5, 6) is formed with a guide surface (25) in the region of its free end which faces the intermediate connecting part (7) in the axial direction in the assembled state of the device (1) and a base section (11) of the intermediate connection part (7) is formed in the region of a free end with a counter-guide surface (26) facing a first or second coupling device part (5, 6) in the axial direction in the assembled state of the device (1). Device according to one of the Claims 5 to 13 , characterized in that a respective base section (16) on the side of the coupling device part is formed with a radial stop surface (27) which defines an articulated end position of the intermediate connecting part (7) relative to the respective coupling device part (5, 6). Device according to one of the preceding claims, characterized in that the intermediate connection part (7) is segmented in the circumferential direction, the intermediate connection part (7) comprising a plurality of intermediate connection part segments (7) which can be connected in the circumferential direction to the intermediate connection part (7) and each comprise at least one base section (11) ') includes. Device after Claim 15 , characterized in that an intermediate connecting segment (7 ') comprises a plurality of basic sections (11) arranged adjacent in the circumferential direction, basic sections (11) arranged directly adjacent in the circumferential direction being connected to one another via at least one structural element (33) which can be expanded and / or compressed in the circumferential direction , Device according to one of the preceding claims, characterized in that the first and / or second coupling device part (5, 6) is segmented in the circumferential direction, the first and / or second coupling device part (5, 6) several in the circumferential direction to the first and / or second coupling device part (5, 6) comprises connectable coupling device partial segments (5 ', 6') each comprising at least one base section (16). Device after Claim 17 characterized in that a coupling device part segment (5 ', 6') comprises a plurality of basic sections (16) arranged adjacent in the circumferential direction, basic sections (16) arranged directly adjacent in the circumferential direction via at least one structural element (30) which can be expanded and / or compressed in the circumferential direction. are interconnected. Device according to one of the preceding claims, characterized in that an engagement element (10) forming a first joint element (9) is designed or comprises a joint pin defining a joint axis (GA) and a receiving element (14) forming a second joint element (12) ) is designed as a pivot pin receptacle or includes one.

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