DE10311841A1 - Screw connection part, especially for wind power plant mast, has channel arrangement for passing setting material into gap between bolt shaft, wall of at least one passage after making connection - Google Patents

Abstract

The screw connection part has a bolt (10) passing through communicating passages in the parts (13,14) to be joined, a nut (18) for screwing onto the bolt shaft and any washers (16,17) used. A channel arrangement is provided for passing a setting material into the gap (23,24) between the shaft and a wall of at least one passage after making the screw connection. An independent claim is also included for the following: (a) a method of making a screw connection compressing at least two parts together.

Description

The invention relates to a screw connection part for the production of at least two components Bolted connection, which communicates with one another through openings of the screw passing through the components, one on the screw shaft screw-on nut and possibly one of the components and / or at least one that can be placed under the nut and / or the screw head Has washer. The invention further relates to a method for producing a screw connection that presses at least two components together, especially when building a lattice mast of a wind turbine, with the steps: inserting a screw into communicating Breakthroughs in the assembled components, screwing on one Nut on the screw shaft and tighten the screw connection.

With a relative movement of the two components connected to one another by the screw connection the screw connection is loaded. This applies in particular to transverse movements of the components across the screw shank, which are subject to excessive thrust loads in extreme cases, shearing and thus breaking of the Can lead screw. such Loads occur particularly with lattice towers, for example for lattice towers for wind turbines, that are always exposed to changing wind pressures. Accordingly it is necessary to connect the components with shear resistant connections connect to.

Due to manufacturing technology Inaccuracies, especially when building lattice masts outdoors, have to the openings of the components, the boreholes, should be somewhat larger than the screw shaft diameter of the screws used. This Lead tolerances however later at making a shear-proof connection to problems.

One way is one to achieve a shear-resistant connection by riveting. The brought in Filled riveting material the entire cavity of the boreholes, so that there is no "game" left thus positive locking is achieved.

Furthermore, so-called high-strength Screwed connections (HV screwed connections) are used, for which means an extremely tensile screw the two components against each other are pressed in such a way that a frictional connection is achieved between the components and thus prevents the thrust movement or at least strongly limited becomes. However, high-strength screw connections are expensive.

You can also use so-called fitting screws use which first the location of the two components must be secured relative to each other. Then the pre-drilled holes if necessary drilled to the exact measure and in any case grated using a reamer. In addition, ground screw shanks must be used become. The process is extremely time consuming and expensive. It is suitable for building lattice masts outdoors Not. Therefore, in these cases resorted to high-strength screw connections, which, however, at vibrating loads carry the risk that material and / or assembly errors to destroy the screw connection can.

It is therefore the object of the present invention the screw connection part mentioned at the beginning for producing a shear-resistant screw connection or the method of further developed in such a way that a shear-resistant Screw connection is achieved.

The solution is for the screw connection part of the type mentioned a channel arrangement available that is provided to a through it when the screw connection curable filling compound at least in a space between the screw shaft and a wall to press one of the breakthroughs.

The same applies to the Method of the type mentioned at the beginning of pressing in a curable filling compound into a space between the screw shaft and a wall at least one of the openings is provided via a channel arrangement, those in the screw and / or the nut and / or in at least one Washer that can be placed under the nut and / or the screw head is provided.

If the filling compound, preferably cast resin, for example Epoxy resin, hardened is, the screw sits positively in the openings of the components, so that a transverse / pushing movement the components are prevented relative to each other. Accordingly the screw connection according to the invention is resistant to shear. The procedure is easy to use. Particularly tensile screws are not absolutely necessary. As a result, the screw connection can be produced relatively inexpensively become. However, it is also possible that for high strength Connections designed screw connection parts designed according to the invention are so extremely resistant to thrust Screw connections possible are.

Further advantages of the invention result themselves from the dependent claims as well as from the description.

The channel arrangement advantageously has at least one inlet opening that is accessible from the outside when the screw connection is produced and at least one outlet opening that opens into the intermediate space. The space to be filled with the filling compound is closed, for example, by the screw head and the screw nut, if appropriate by one or more washers arranged on one or both sides, so that the filling compound can be conveniently introduced through the inlet opening.

At the entrance opening is expedient a connection means for the pressure-tight connection of a press-in device for pressing in the filling compound intended. The connection means is, for example, a kind of head or nipple from a connector of the press-in device is enclosed.

Is advantageous at least an entrance opening a check valve arranged that a backflow of the pressed-in filling compound from the gap to the outside prevented. This embodiment is particularly in connection with the aforementioned connection means prefers. The connection means and the check valve form preferably an assembly similar to one Grease fitting.

The channel arrangement preferably has one or several surface depressions and / or one or more passageways on. The open side of such a surface recess is preferred closed when the screw connection is established, for example by the surface depression comes to rest on one of the components to be connected.

Conveniently flows into manufactured screw connection in each of the openings at least one outlet opening the channel arrangement. This measure ensures an optimal distribution of the filling mass in the area of breakthroughs. In principle, however, would only be one outlet opening possible, if the filling compound can flow from one opening to the other. With sufficient Press-in pressure is then also an optimal distribution of the filling compound possible in the openings.

In the screw connection part according to the invention are several embodiments possible: It is preferably as a screw with a screw head and designed a screw shaft.

An inlet opening is expediently on Screw head and one or more outlet openings on the radial outer circumference the screw shaft arranged.

The channel arrangement of the screw expediently comprises at least one essentially in the longitudinal direction of the screw shaft longitudinal channel and at least one associated with it, into which at least one Outlet opening and radial channel running essentially in the radial direction.

Preferably on the screw shaft axially spaced outlet openings available. It is expediently at least one outlet opening of a component opening assigned.

The outlet openings above the are advantageous Circumference of the screw shaft distributed. This measure has the same effect as that previously mentioned measures a particularly even distribution the filling mass in the area of the breakthroughs.

The screw connection part is also advantageous designed as a washer or as a nut.

It goes without saying that any Combinations of known screw connection parts together with the screw connection parts according to the invention can be used. For example a known screw and a known nut together with a washer according to the invention be used. Furthermore, a screw according to the invention can be used together with a known mother and a washer according to the invention used be, expediently the washer according to the invention between the mother and that immediately adjacent to the mother Component comes to rest.

In the washer or the mother of the invention is the entrance opening expediently each arranged on the end face and the at least one outlet opening in the Area of a push-through opening the washer or a screw hole of the nut.

With this washer or this Mother are the entrance opening and the outlet opening expediently through at least one radially extending connecting channel connected.

The outlet opening is expedient through one around the push-through opening or the screw opening surface depression extending at least partially in the circumferential direction educated. The surface depression is with the screw connection made by the screw and / or by locked one of the assembled components. The surface depression is expediently on that of the entrance opening opposite End face arranged.

Another, particularly preferred A variant sees an embodiment of the screw connection part as one of the components to be connected. The channel arrangement for pressing in the curable filling compound can namely can also be provided on such a component according to the invention.

The component expediently points as well as the one explained above washer according to the invention a plate-like shape. It is advantageous for the component or the washer around a connecting strap.

The following refinements relate to such components or washers according to the invention, in particular to connecting straps, with only the component being summarized below for the sake of simplicity arranged on the second end face opposite the inlet opening.

The outlet opening is advantageously by a surface recess structure arranged on the second end face is formed. The surface well structure is for example by embossing and / or Punching and / or milling manufactured.

The surface recess structure advantageously has at least one opening into a push-through or screw-in opening Channel on. The channel runs advantageous at least partially in the circumferential direction of the push-through or screw opening. Conveniently, there are several push-through or screw-in openings in the component provided to which the filler mass via the surface recess structure can reach.

A seal arrangement prevents expediently an outflow the filling mass from the channel arrangement or the surface recess structure. The Sealing arrangement advantageously includes the surface recess structure in the circumferential direction. It is also possible that the sealing arrangement individually individual channels the surface recess structure seals.

The sealing arrangement can be one or several elastic sealing elements, e.g. made of silicone or rubber, contain. A variant is particularly preferred in which second end face of the washer or the component bulges formed are provided. These run, for example, on both sides of the channels Surface depression structure. When the screw connection is made, the elevations lie on one cooperating component, e.g. one of the components to be connected, for sealing the surface recess structure and thus ensure the desired Tightness. The surveys related, for example with an embossing or milling of channels the surface recess structure are formed, are expedient plastically when establishing the screw connection by the cooperating component deformed.

In the method, it is preferred that the filling compound is pressed in with such a pressure that it expands distributed from the space between the components placed together. The filling compound then acts as it were as a connecting the components together Glue and carries additionally to the shear strength of the connection.

The distribution is expedient the filling mass between the components still improved in that - still before putting the components together - on at least one of the components starting from its opening, in particular radial surface depressions are attached, the distribution channels for the filling compound between the components placed next to each other form. Are expedient but also helical Wells. The wells can for example by scoring one or both components become.

In the following the invention is based on two embodiments with reference to the figures explained. Show it:

1 2 shows a lateral cross-sectional view of a first exemplary embodiment of a screw connection according to the invention with a washer which has a channel arrangement according to the invention for pressing in a curable filling compound,

2 a front cross-sectional view of the embodiment according to 1 along a line AA,

3 a view of the washer according to 1 and 2 from underneath,

4 a side cross-sectional view of a second embodiment of a screw connection according to the invention, in which the channel arrangement is provided in the screw, and

5 a front cross-sectional view of the embodiment according to 4 along a line BB in 4 .

6 3 shows a front view of the third exemplary embodiment, in which two components are screwed to one another by means of connecting straps according to the invention,

7 side cross-sectional view along a line CC in 6 , and

8th FIG. 4 shows a cross-sectional view of a detail of a surface recess structure in FIG 6 , along a line DD.

With the 1 to 3 The first exemplary embodiment shown is a screw 10 through communicating breakthroughs 11 . 12 of components 13 . 14 Box Type. The screw 10 is, for example, a known push-through screw. The screw 10 penetrates a push-through opening 37 a washer 16 on which her screw head 15 rests. The washer 16 forms a screw connection part according to the invention and is between the screw head 15 and the component 13 arranged. The screw 10 also penetrates a washer 17 , the outside of the component 14 is applied. A medium threadless section 19 the screw 10 is in the assembled state in the area of the openings 11 . 12 arranged. At the free, the screw head 15 opposite end of the screw 10 there is a threaded section 20 who the washer 17 interspersed and into the mother 18 is screwed in.

For the components 13 . 14 it is for example struts of a lattice mast of a wind turbine. The breakthroughs 11 . 12 are ideally arranged so that they are aligned with each other. However, this is hardly feasible in practice during assembly, so that the two openings 11 . 12 communicate with each other but not exactly aligned. In the figure is the lateral offset of the openings 11 . 12 shown relatively large for reasons of clarity.

The assembly process designed yourself as follows:

The screw is successively through the washer 16 , the breakthroughs 11 . 12 and the washer 17 inserted and then into the mother 18 screwed. After tightening the screw connection, the washers seal 16 . 17 the breakthroughs 11 . 12 to the outside. As can be seen from the drawing, there can then be a transverse movement of the components 13 . 14 come relative to each other because of the breakthroughs 11 . 12 have a larger diameter than the central section 19 the screw shaft 21 the screw 10 ,

At this point sets the invention:

At the washer 16 is a channel arrangement 22 present, through which a curable filler material, not shown in the figure, is formed in the interstices when the screw connection is produced 23 . 24 between the screw shaft 21 and the walls of the openings 11 or 12 can be pressed. With this filling compound, the gaps are 23 . 24 filled, creating a positive connection between the screw shaft 21 and the components 13 . 14 is produced so that a transverse / shear movement of the components 13 . 14 is avoided relative to each other.

At an entry opening 26 the channel arrangement 25 is a connection means 27 arranged in the form of a kind of grease nipple. The connection means 27 is, for example, in the washer 16 screwed. It has a head to which a press-in device (not shown in the figure) for pressing in the filling compound can be connected in a pressure-tight manner. Also not shown is a check valve, which is part of the connection means, for example 27 forms. The non-return valve prevents a pressed-in, but not yet fully cured, filling compound from flowing back from the gaps 23 . 24 outward.

The connection means 27 is on the front of the washer 16 arranged and thus accessible from the outside even when a screw connection is made. About the connection means 27 the filling mass is in the inlet opening 26 pressed. It then flows through one to the push-through opening 37 for the screw shaft 21 parallel flow channel 28 to a ra dial on the washer 16 trending connecting channel 29 to an exit opening 30 that is just like the connecting channel 29 is designed here as a surface recess. The exit opening 30 runs around the push-through opening 37 the washer 16 around. In this way, the filling compound can be used regardless of the position of the screw shaft 21 relative to the breakthrough 11 in the space 23 and from there into the space 24 flow. Due to a suitably high injection pressure when the filling compound is injected, there is roughly in the spaces 23 . 24 air is displaced from these spaces.

In cooperation with the washer according to the invention 16 a known screw and a known nut can be used, optionally also those which are customary for high-strength prestressed connections. The tensile strength of the connection is therefore extremely high.

It is understood that instead of the washer 17 also a washer type 16 can be used so that washers according to the invention are used on both sides in the screw connection.

In the second embodiment according to the 4 and 5 is instead of the well-known screw 10 a screw according to the invention 31 used while instead of the washer according to the invention 16 a conventional washer type 17 is used. This washer is therefore also with the reference symbol 17 Mistake. Other components that are the same or similar in the second exemplary embodiment as in the first exemplary embodiment are provided with the same reference numerals and are not explained in more detail below.

The screw 31 has a channel arrangement 32 on, for pressing a filling compound, also not shown, into the spaces 23 . 24 serves. With the channel arrangement 32 runs in the longitudinal direction of the screw shaft 21 a longitudinal channel 33 , In these the filling compound is on the face of the screw head 15 ' arranged connector 34 be pressed. The connector 34 is, as known from the first embodiment, a kind of grease nipple. For example, it is in the screw head 15 screwed, pressed or otherwise connected to this. From the longitudinal channel 33 radial channels branch in the radial direction 35 . 36 from. The radial channels 35 and 36 are axially spaced apart, the radial channels 35 in the breakthrough 11 and the radial channels 36 in the breakthrough 12 open out. In this way, the gaps 23 . 24 be filled homogeneously with the filling compound.

The radial channels also contribute to uniform filling 35 and 36 each star-shaped from the longitudinal channel 33 turn radially outwards.

The third, in the 6 to 8th The exemplary embodiment shown are components 38 . 38 ' with the help of connecting straps 39 . 40 connected to each other the. For example, the components 38 . 38 ' around struts of a lattice mast of a wind turbine. The components 38 . 38 ' are arranged one above the other. Laterally next to the components 38 . 38 ' , on opposite sides of the components 38 . 38 ' , are connecting lugs 39 . 40 arranged. The connecting straps 39 . 40 lie flat on the components 38 . 38 ' , The connecting straps 39 . 40 are with the components 38 . 38 ' by means of screws 44 and nuts 45 connected. The screws 44 penetrate the components 38 . 38 ' of breakthroughs 41 and the connecting tabs 39 . 40 of breakthroughs 42 . 43 , The breakthroughs 41 . 42 . 43 essentially aligned with each other. The screws 44 are from the connecting tab 40 forth through the breakthroughs 41 to 43 put through and with the nuts 45 screwed. Between the nuts 45 and the connecting tab 39 and the screw heads of the screws 44 and the connecting tab 40 there is a washer in each case 46 , The washers 46 close the openings 41 . 43 outwardly essentially.

The breakthroughs 41 to 43 are essentially in line with each other, but not exactly. Accordingly, is between the breakthroughs 41 to 43 and the screws 44 a certain game, the known screw connections to such cross conditions for the screws 44 would lead to them possibly even being sheared off. To prevent this, they are between the screws 44 and the breakthroughs 41 to 43 existing gaps 57 to 59 as in the previously explained embodiments with a filling compound 61 filled. For introducing the filling compound 61 is the connection tab 40 designed according to the invention.

At the connecting tab 40 are channel arrangements 49 . 50 for pressing in the filling compound 61 intended. The channel arrangement 49 is the component 38 ' , the channel arrangement 50 the component 38 assigned. On the front side of the connecting bracket, which is accessible from the front 40 are connection means 62 with entry openings 63 of the channel arrangements 49 . 50 arranged. The connection means 62 are similar to the connection means in the present case 27 designed as a kind of grease nipple. Via the entry openings 63 becomes the filling compound 61 into the channel arrangements 49 . 50 pressed. The filling compound 61 initially flows through passage channels 65 from the front 47 to a face opposite this 48 the connecting strap 40 to outlet openings 64 , The outlet openings 64 are at the connecting tab 40 as surface recess structures 51 . 52 designed.

The surface well structure 51 is the component 38 ' who have favourited Surface Well Structure 52 the component 38 assigned. The surface recess structures 51 . 52 are assembled by the components 38 . 38 ' locked. The surface recess structures 51 . 52 form a kind of channel system, the channels of which are the openings 43 connect with each other. The channels can, for example, be star-shaped or in some other way from the respective inlet openings 63 forth to the breakthroughs 43 run. With the structures 51 . 52 one channel leads to an opening 43 , It is also possible for a plurality of channels to lead to an opening and / or for the openings to be connected to one another by transverse channels which are not directly connected to the inlet openings. The design of the surface recess structures 51 . 52 expediently enables a uniform distribution of the filling compound 61 in the breakthroughs 43 or the openings which are essentially aligned with these 41 and 42 ,

So that the filling compound 61 distributed as optimally as possible, a high injection pressure is preferred. However, this injection pressure can result in the filling compound 61 from the channels of the structures 51 . 52 For example, it comes out laterally and between the components 38 . 38 ' and the connecting tabs 39 . 40 distributed. To a certain extent, as already explained in connection with the second exemplary embodiment, this can be advantageous since the filling compound 61 at the same time gluing the components 38 to 40 causes. The adhesive effect ensures an additional shear strength of the connection. However, it is not desirable that the filling compound 61 distributed even further, for example on the side of the components 38 to 40 emerges. To prevent this, sealing arrangements are provided in the present case, which are described below.

seals 55 . 56 surround the surface recess structures 51 . 52 ring-shaped in the manner of sealing rings. When the screw connection is made, they lie between the connecting lugs 40 as well as the components to be connected 38 respectively. 38 '. The seals 55 . 56 are made of an elastic material, such as silicone or rubber.

Another sealing arrangement for sealing the channels of the surface recess structures 51 . 52 is described below using an in 8th channel shown in detail 53 the surface recess structure 52 explained. Next to the channel 53 are beads on the side 60 educated. The beads 60 by embossing the channel appropriately 53 educated.

When tightening the screws 44 becomes the connection tab 40 firmly against the components 38 . 38 ' pressed. This makes the comparatively narrow beads 60 plastically deformed. The beads 60 nestle against the cooperating component 38 . 38 ' and are therefore optimally close to the respective upper side of the components 38 . 38 ' on. The beads 60 seal the channel 53 sideways.

The beads 60 are with a dashed line in the state before the screw connection was made and in a solid line after Her position of the screw connection, ie after the plastic deformation.

It goes without saying that any Combinations of the above measures are possible.

For example, in the second embodiment, instead of the washer 17 a washer according to the invention in the manner of the washer 16 be used.

In addition to the radial channels 35 . 36 further radial channels could be provided axially spaced apart.

Claims (31)

Screw connection part for producing at least two components ( 13 . 14 ; 38 . 38 ' ) compressing screw connection, which communicates with one another through openings ( 11 . 12 ; 40-43 ) the components ( 13 . 14 ; 38 . 38 ' ) penetrating screw ( 10 ; 31 ; 44 ), one on the screw shaft ( 21 ) screw-on nut ( 18 ; 45 ) and possibly one of the components ( 13 . 14 ; 38 ' . 38-40 ) and / or at least one under the mother ( 18 ; 45 ) and / or the screw head ( 15 ) placeable washer ( 16 . 17 ; 46 ), characterized by a channel arrangement ( 25 ; 32 ), which is provided so that a curable filling compound can be passed through it into a space (screw connection). 23 . 24 ; 57-59 ) between the screw shaft ( 21 ) and a wall of at least one of the openings ( 11 . 12 ; 40-43 ) press. Screw connection part according to claim 1, characterized in that the channel arrangement ( 25 ; 32 ) at least one inlet opening accessible from the outside when the screw connection is made ( 26 ; 63 ) and at least one in the space ( 23 . 24 ; 57-59 ) outlet opening ( 30 ; 64 ) having. Screw connection part according to claim 1 or 2, characterized in that at the at least one inlet opening ( 26 ; 63 ) a connection means ( 27 ; 34 ; 62 ) is provided for the pressure-tight connection of a press-in device for pressing in the filling compound. Screw connection part according to one of claims 1 to 3, characterized in that at least one inlet opening ( 26 ; 63 ) a check valve is arranged which prevents the pressed-in filling material from flowing back out of the intermediate space ( 23 . 24 ; 57-59 ) prevented to the outside. Screw connection part according to one of the preceding claims, characterized in that the channel arrangement ( 25 ; 32 ) at least one surface depression ( 30 ; 64 ) and / or at least one passage channel ( 28 ; 33 . 35 . 36 ) having. Screw connection part according to claim 9, characterized in that when a screw connection is made in each of the openings ( 11 . 12 ; 40-43 ) at least one outlet opening ( 30 ; 64 ) the channel arrangement ( 25 ; 32 ) flows out. Screw connection part according to one of the preceding claims, characterized by an embodiment as a screw ( 31 ) with a screw head ( 15 ) and a screw shaft ( 21 ). Screw connection part according to claim 7, characterized in that the at least one inlet opening ( 26 ; 63 ) on the screw head ( 15 ) and the at least one outlet opening ( 30 ; 64 ) on the radial outer circumference of the screw shaft ( 21 ) are arranged. Screw connection part according to claim 7 or 8, characterized in that the channel arrangement ( 25 ; 32 ) at least one essentially in the longitudinal direction of the screw shaft ( 21 ) longitudinal channel ( 33 ) and at least one connected to it, into the at least one outlet opening ( 30 ; 64 ) opening and essentially radial channel ( 35 . 36 ) having. Screw connection part according to one of claims 7 to 9, characterized in that axially spaced apart at least two outlet openings ( 30 ; 64 ) on the screw shaft ( 21 ) are provided. Screw connection part according to one of claims 7 to 10, characterized in that the outlet openings ( 30 ; 64 ) about the circumference of the screw shaft ( 21 ) are distributed. Screw connection part according to one of claims 1 to 6, characterized by an embodiment as a nut ( 18 ). Screw connection part according to one of claims 1 to 6, characterized by a configuration as a washer ( 16 ). Washer according to claim 13 or nut ( 18 ) according to claim 12, characterized in that the at least one inlet opening ( 26 ) on the front of the washer ( 16 ) or the mother ( 18 ) is arranged, and that the at least one outlet opening ( 30 ) in the area of a push-through opening ( 37 ) the washer ( 16 ) or a screw-in opening of the nut ( 18 ) is arranged. Washer or nut ( 18 ) according to claim 14, characterized in that the at least one inlet opening ( 26 ) and the least an outlet opening ( 30 ) through at least one radially extending connecting channel ( 29 ) are connected. Washer or nut ( 18 ; 45 ) according to claim 14 or 15, characterized in that the at least one outlet opening ( 30 ) is formed by a surface recess extending at least partially in the circumferential direction around the push-through opening or the screw-in opening. Washer or nut ( 18 ; 45 ) according to claim 16, characterized in that the surface recess at that of the inlet opening ( 26 ) opposite end face is arranged. Screw connection part according to one of claims 1 to 6, characterized by an embodiment as at least one of the components to be connected ( 13 . 14 ; 38 ' . 38-40 ). Screw connection part according to one of claims 13 to 18, characterized in that the at least one inlet opening ( 26 ; 63 ) on a first end face accessible from the outside when the screw connection is made ( 47 ) of the screw connection part ( 40 ) is arranged, and the at least one outlet opening ( 30 ; 64 ) at one of the entry openings ( 26 ; 63 ) opposite second end face ( 48 ) of the screw connection part ( 40 ) is arranged. Screw connection part according to one of claims 13 to 19, characterized by a plate-like shape, in particular in the manner of a connecting strap ( 40 ). Screw connection part according to one of claims 13 to 20, characterized in that the at least one outlet opening ( 30 ; 64 ) by one on the second face ( 48 ) arranged surface recess structure ( 51 . 52 ) is formed. Screw connection part according to claim 21, characterized in that the surface recess structure ( 51 . 52 ) has at least one channel opening into a push-through or screw-in opening. Screw connection part according to claim 22, characterized characterized in that the at least one channel at least partially runs in the circumferential direction of the push-through or screw-in opening. Screw connection part according to one of claims 19 to 23, characterized in that the surface recess structure ( 51 . 52 ) circumferentially and / or individually individual channels of the surface recess structure ( 51 . 52 ) sealing seal arrangement ( 55 . 56 ) is provided. Screw connection part according to claim 24, characterized in that the sealing arrangement at least one elastic sealing element ( 55 . 56 ) contains. Screw connection part according to claim 24 or 25, characterized in that the sealing arrangement ( 55 . 56 ) at least one elevation formed in the form of a bead on the second end face of the screw connection part ( 60 ) which, when a screw connection is made, on a cooperating component ( 38 . 38 ' ) for sealing the surface recess structure ( 51 . 52 ) is present. Screw connection part according to claim 26, characterized in that the at least one elevation ( 60 ) is particularly plastically deformable when the screw connection is made by the cooperating component. Method for producing at least two components ( 13 . 14 ; 38 ' . 38-40 ) compressing screw connection, in particular when building a lattice mast of a wind power plant, with the steps: - pushing through a screw ( 10 ; 31 ; 44 ) in communicating breakthroughs ( 11 . 12 ; 40-43 ) of the assembled components ( 13 . 14 ; 38 ' . 38-40 ), - screwing on a nut ( 18 ; 45 ) on the screw shaft ( 21 ), - tightening the screw connection, and - pressing a hardenable filling compound into a space ( 23 . 24 ; 57-59 ) between the screw shaft ( 21 ) and a wall of at least one of the openings ( 11 . 12 ; 40-43 ) via a channel arrangement ( 25 ; 32 ) in the screw ( 31 ) and / or in the mother ( 18 ; 45 ) and / or in one of the components ( 13 . 14 ; 38 ' . 38-40 ) and / or in at least one under the mother ( 18 ; 45 ) and / or the screw head ( 15 ) placeable washer ( 16 ) is provided. A method according to claim 28, characterized in that as curable filling compound Cast resin is used. A method according to claim 28 or 29, characterized in that that the filling compound with such a pressure that it starts going out of the space between the components placed together distributed. A method according to claim 30, characterized in that starting from the opening thereof, in particular radial surface depressions are made on at least one of the components, between the structures placed one against the other divide distribution channels for the filling compound.