CN113169462A

CN113169462A - Electrically conductive arrangement, concrete component, method and use

Info

Publication number: CN113169462A
Application number: CN201980078533.2A
Authority: CN
Inventors: M·沃尔布林; C·尼夫
Original assignee: Pfeifer Holding GmbH and Co KG
Current assignee: Pfeifer Holding GmbH and Co KG
Priority date: 2018-12-03
Filing date: 2019-12-03
Publication date: 2021-07-23
Also published as: EP3891845A1; DE102018130746A1; WO2020115082A1

Abstract

The invention relates to an electrically conductive arrangement for connecting an electrical conductor to a cable by means of a connector and a screw fixed therein. The invention also relates to a concrete component having such an electrically conductive arrangement, to an associated method and to an associated use.

Description

Electrically conductive arrangement, concrete component, method and use

The invention relates to an electrically conductive arrangement, a concrete component, a method and a use.

The conductive arrangement is generally used in applications where it is important to have a reliable conductive connection at the high current carrying capacity. This may entail serious problems if the electrically conductive arrangement is erroneously mounted during mounting or the electrical contact can no longer be reliably provided due to a functional failure. Such errors may also not be found for a long time in one example of use of the ground connector, in which case it is only noticed that the desired current-carrying capacity is not provided at all in case of an emergency such as a short circuit.

It is therefore an object of the present invention to provide a conductive arrangement which is designed as an alternative to known designs. It is a further object of the invention to provide a concrete component having such an electrically conductive arrangement, and to provide a corresponding method and a corresponding use.

According to the invention, this object is achieved by an electrically conductive arrangement, a concrete element, a method and a use according to the respective independent claims. Advantageous refinements can be found, for example, in the respective dependent claims.

The present invention relates to a conductive arrangement. The conductive arrangement has an electrical conductor, a connector, a plurality of screws, and a cable. The screw is fixed to and connected in an electrically conductive manner to the connector. At least one screw penetrates the electrical conductor at its end facing the electrical conductor, with the screw forming an electrically conductive connection with the electrical conductor. To electrically connect the connecting elements, the cables are fixed to the connecting elements in an electrically conductive manner.

By means of the electrically conductive arrangement according to the invention, a particularly reliable and durable electrically conductive connection can be established between the electrical conductor and the connecting element and the cable fixed thereto. The screw penetrates into the electric conductor to prevent the electric connection from loosening or being damaged. In addition, such a connection can be easily established and reliably checked.

The design ensures in particular that an electrically conductive connection is established from the electrical conductor to the connection element and thus to the cable. This is usually done by means of said screws.

The connecting element can in particular be designed as an element which is stable in itself. For example, it may have a length, height and/or width greater than 5cm, greater than 10cm or greater than 20 cm. It is preferably made of an electrically conductive material, so that it itself ensures electrical conductivity between the cable and the electrical conductor. The connection may in particular be designed to hold the screw itself in place and to absorb the reaction forces caused by contact with the electrical conductor.

The electrically conductive arrangement may preferably have an electrically conductive member. The electrical conductor may be conductively connected to the conductive member. The electrical conductor may also be an integral part of the conductive member. The electrically conductive element may be, in particular, a conductive element which, in the case of contact with an electrically charged conductor, short-circuits it, in particular connects it to ground. Such a conductive element can be used, for example, in the vicinity of live trolley lines of rail vehicles. Due to the high power requirements of rail vehicles (e.g. trains), such trolley lines typically carry very high voltages of several kilovolts. If such a trolley line breaks, the high voltage still present may cause the loose end of the trolley line to move rapidly and energetically, whereby, for example, buildings located in the vicinity of the railway line may be damaged or people may be put at risk. It is therefore important in this case to set the earthing as fast as possible with a high current-carrying capacity, against which the trolley wire should meet as fast as possible. The corresponding line section is then switched to no voltage because of the short-lived high currents triggering the fuse. Thus, there is no longer a danger and the loose end of the trolley wire is stationary.

The conductive member may be incorporated into or installed in a building, for example, and provides the current carrying capability required for grounding in the case just described. For example, they can be arranged in the vicinity of the trolley lines or other electrical components with high voltage, so that they are struck as quickly as possible in the event of a breaking of the trolley lines or other functional failure and lead to triggering of the fuse. In this case, it can also be provided, for example, that the conductor is arranged in the concrete body and that the impact trolley line first strikes off a portion of the concrete before it strikes the conductor.

It should be mentioned that it is not necessary to provide a conductive member for this purpose to achieve grounding. It may also be an element that otherwise provides high current carrying capability.

The conductive member should not be confused with a ground wire, which may actually make physical contact with ground. Such a ground wire may for example be connected to a cable and may also be considered as an integral part of the conductive arrangement. Thereby, the grounding wire may preferably be connected to the conductive member. In particular, the embodiments of the electrically conductive arrangement described herein enable a particularly advantageous connection of the electrically conductive member to an earth line, since a particularly simple and easily checked electrical connection can be made by means of the screws already described.

The conductive elements may be, for example, concrete reinforcement meshes, steel plates and/or electrical conductors in the form of concrete reinforcements. It may also be a ground grid, a ground plate or a ground rod. Such elements can be provided in particular for providing a ground connection via a region or a surface, so that the loose and voltage-exposed end of the respective conductive element, for example a broken conductor, strikes smoothly. The conductive member may be used for other tasks. The concrete reinforcement mesh can be, for example, a wire grid made of welded rods, in particular concrete reinforcements.

The electrically conductive member or members may be formed, in particular, of steel, structural steel, concrete steel or concrete reinforcement. A combination of high strength and good electrical conductivity can thereby be achieved. The conductive elements may also be simultaneously responsible for load-bearing tasks, for example. It should be mentioned that other materials may be used for the conductive elements.

The conductor, which is conductively connected to the conductor as described above, may for example be formed integrally with the conductor and/or from the same material as the conductor. This enables a particularly stable connection and simple production. However, the electrical conductor may also be formed of a different material. For example it may be welded or brazed to the flow directing member.

According to a preferred embodiment, the connecting element has a constriction in one end region, at which the connecting element can be pressed in particular onto the cable. For example, a region into which the cable is inserted can be provided, wherein at least a part of the insertion region is preferably uninsulated on the outside. This region can then be clamped or crimped, for example, so that the cable is permanently held on the connector. Direct electrical connections can also be formed here. In addition, the region can taper off in this case, so that a constriction is formed. It should be understood that other techniques may be used to secure the cable to the connector, such as compression, bonding, welding or soldering. Here, in particular, the exposed region of the cable can also be used.

The cable can in particular be designed to be flexible and/or elastic. This allows a very simple connection of components such as a grounding piece or a grounding connector to the cable, since the cable can run freely and can, for example, run over a greater distance and/or be arranged around other components. Alternatively, however, a rigid cable may be used, or the cable may be locally rigid or flexible.

The cable may have an insulating jacket along the major localized area. Therefore, the internal conductor can be protected, and an undesired current flow can be suppressed. The cable may also be free of an insulating jacket in one or more localized areas. In such local areas, for example, there may be an uninsulated electrical conductor, or the electrical conductor may be exposed. This allows advantageous contacting, in particular for connecting to connecting or connecting elements.

The electrically conductive arrangement may in particular have an electrical connection piece which is connected to the cable opposite the connection piece. The terminal element may for example be provided for connecting a cable to another electrically conductive member, such as a ground wire, which may be connected to the terminal element. For example, the terminal can be an element which is arranged on the formwork during the production of the concrete or other component and can therefore be contacted from the outside by electrically conductive contacts also after the concrete has been poured.

The electrical connection piece can be designed, for example, as a tape-on-disk press sleeve with a disk, or as a welded connection piece with a flat end, or as a cable bushing with a collar, or as a block connector. Simple connections to other electrical conductors can thereby be realized.

The junction element may also be designed or used to interconnect multiple cables or multiple conductors. Thereby, for example, an electrical connection can be established between a plurality of electrical conductors, whereby they can be, for example, commonly grounded. For this purpose, a plurality of terminal elements in the form of solder tabs can be soldered together, for example. Two, three or more cables can be connected to one another.

The electrically conductive arrangement may preferably have a current carrying capacity of at least 20000 amps or at least 40000 amps. This may be advantageous in particular for grounding purposes, for example in the railway field. The current-carrying capacity may in particular be an electric current which can flow over a time period of 0.1 to 1 second and the temperature rise caused by this current remains below 260K. Typical current carrying capacities may be, for example, between 25kA and 45 kA.

The conductive arrangement preferably has a resistance between the electrical conductor and the cable of less than 50 micro-ohms or less than 200 micro-ohms. The conductive arrangement may also have a resistance between 1 micro ohm and 50 micro ohm. Such values are particularly suitable for grounding purposes, for example in the railway field, and may lead to the advantageous current-carrying capacity already mentioned.

Preferably, an end stop or a central stop as a position check for the electrical conductor to be accommodated in the bore of the connector is arranged between or behind the longitudinal ends. This makes it possible to advantageously check the insertion of the electrical conductor.

The electrically conductive arrangement may have at least one screw which has a theoretical breaking point, by means of which the screw has a defined breaking torque and is no longer detachable after breaking. This makes it possible to check the fixing particularly easily. The screw can be tightened normally but will break at a specified breaking torque. For example, when the theoretical breaking point is between the head and the remainder of the screw, the head of the screw may break or break.

In the case of an electrically conductive connection between the screw and the electrical conductor, the screw preferably penetrates the electrical conductor at its end facing the electrical conductor. But only a part of the screws can be treated so that they can actually penetrate the electrical conductor.

With respect to the number of screws, any number may be employed, such as one screw, two screws, three screws, or more than three screws.

The electrical conductor can be designed, for example, as a rod or cable, or also as a litz wire. For example it may have a compact cross-section. The cross section can be circular, for example, but it can also be designed to be truncated or approximately angular or completely angular, quadrangular or polygonal. The electrical conductor is preferably made of a conductive metal or a conductive metal alloy. Conductive designs are referred to herein particularly as conductive designs.

Preferably, the screw penetrating into the electrical conductor penetrates into the core material of the electrical conductor through the surface layer of the electrical conductor. This may take into account, inter alia, the fact that, due to the manufacturing process, the conductor is provided at least partially with an oxide layer or oxide layer on the surface. It may therefore be advantageous to penetrate such layers and achieve a low resistance electrical connection in the core of the material. However, the respective layer may also be useful here at the same time, since it passivates the electrical conductor to the outside and protects it from undesired contact.

The screw preferably has a portion at its end facing the electrical conductor which tapers towards the electrical conductor. The respective screw can thus advantageously penetrate into the electrical conductor, where locally an increased force can be applied. For example, the outer layers of the electrical conductor can be penetrated.

Another conceivable range of application lies in the maintenance work of high-current lines, for example at electric vehicles, solar farms or charging stations, which are damaged by any fault, accident or effect and at least partially have to be replaced. This prefabricated and ready-to-use electrical conductor arrangement is proposed here without large auxiliary tools, which can be applied to the remaining electrical conductor and can be penetrated in a defined manner by, for example, a break screw and is sufficiently electrically conductive and cannot be removed anymore. Thus, the repair is self-checking and irreversible without auxiliary tools. For this purpose, an electrically conductive arrangement with one or two connections is conceivable, which is encapsulated in an electrically insulating manner after installation, for example by means of a plastic coating, a plastic sleeve, a shrink hose or similar auxiliary element.

The portion tapering towards the conductive body may be conical, pointed, frusto-conical or pyramidal, for example. Such a design has proven suitable for typical applications. The tapering can be identical here in all screws used, but can also be designed differently.

The screw is preferably received in a corresponding transverse bore of the connecting piece having an internal thread complementary to the external thread of the screw. It is thereby possible for the screw to be fixed strongly to the connecting piece. The screw usually has a longitudinal direction oriented transversely to the electrical conductor. They are therefore usually also screwed in a direction transverse to the electrical conductor or transverse to the longitudinal direction of the electrical conductor.

According to one embodiment, all transverse bores are arranged along a line extending parallel to the longitudinal axis of the connecting piece.

According to one embodiment, a part of the transverse bores is arranged along a line extending parallel to the longitudinal axis and a part of the transverse bores is arranged offset in the circumferential direction. By this design, the transverse bores can be arranged at different radial positions, which may be advantageous for certain assembly situations, for example.

The electrical conductor may be, for example, a rod, a steel rod, a structural steel rod, a concrete bar, a cable or a stranded wire. Such embodiments have proven suitable for typical applications.

It is generally to be mentioned that the electrical conductor can have, for example, a compact, circular cross section or also a truncated or approximately or completely angular cross section, for example a quadrangular or polygonal cross section. The electrical conductor may be formed, for example, from an electrically conductive metal or from an electrically conductive metal alloy.

The conductor may have a plurality of projections, for example. This may correspond, for example, to a design as a concrete reinforcement.

According to an alternative embodiment, the connector is designed to receive a respective electrical conductor at both the first and the second longitudinal end, and the connector also has, for example, a respective transverse bore for screwing in a screw at least one of the two longitudinal ends. It may also have corresponding transverse bores at both longitudinal ends for screwing in screws. Whereby the connector can be designed to connect two electrical conductors to each other and at the same time obtain the advantages mentioned in the introduction.

The connecting element can be designed in particular as a double connector. This can be done, for example, in the manner just described, i.e. by being designed to accommodate two electrical conductors at respective longitudinal ends.

Preferably, an end stop or a central stop as a position check for the electrical conductor to be accommodated in the bore of the connector is arranged between or behind the longitudinal ends. It is thereby possible to ensure that the individual conductors can only be pushed against the respective end stop or central stop and in this way it is also possible to check whether they have been inserted far enough, i.e. for example up to the stop.

For example, a deep-screwed screw can be used as a stop. In this case, the screw head may, for example, be left on, which is used for visual inspection. But in this case it is possible that the wires may not be fully seated. It is also possible to insert the conductors in a positionally correct manner and then to screw in the screws, for example as end stops or center stops. The last screw can then be screwed into a deeper position without contact, wherein for example the screw head may fall out. This will also be described in more detail below. The stub of this screw then appears deeper than the other screws, so that the position can be reliably checked.

According to an alternative embodiment, the connecting element can be designed, for example, as a disk-shaped connector or as a disk press sleeve. For this purpose, a disk can be arranged, for example, on the end face, in particular opposite the receptacle of the electrical conductor. Such a design in the form of a disc may be advantageous, for example, for connecting cable bushings, wherein a connecting tube, for example a disc connector, may have an internally threaded bore. The connecting tube may for example be identical to the connecting tube accommodating the respective electrical conductor.

For the design as a disk-shaped connector, the connecting element can have, for example, a disk at one longitudinal end, which disk is transverse to the longitudinal axis of the connecting element. For example, other objects such as cable bushings may also be mounted thereon.

According to an alternative embodiment, the connecting element can also be designed as a block connector. In order to design the block connector, the connector may have a section at one longitudinal end with a larger diameter than the rest of the connector. For the design as a block connector, the connecting element can have, for example, an integrally formed widened block, for example, cylindrical or otherwise solid on the front side. It may for example have a hole and an internal thread. It therefore provides a sufficiently large contact surface for the cable bushing. A connector can be connected to the cable sleeve at the rear. At the longitudinal end opposite the block or the larger-diameter section, a receptacle for an electrical conductor can be provided, for example. There may also be provided holes for screws. For example, it is also possible to weld steel electrical conductors to solid blocks or sections of larger diameter.

The connecting element can, for example, receive a rigid electrical conductor in one end and a cable in the other end, which leads into a further connecting element, for example a tape reel press sleeve with a reel or a welding lug with a flat end or a cable connection sleeve with a collar or a further crimp or a block connector. This makes it possible to achieve a connection solution which is advantageous in many cases, in which, for example, the electrical conductors are connected by means of a connector and a cable, the connector being able to be spaced apart from the conductors by the cable and also being able to be arranged flexibly.

According to an alternative embodiment, the connecting element can have a welded tab, for example. By means of such a soldering tab, different components, such as cables or other electrical connection means, can be soldered in a simple and flexible manner.

According to an alternative embodiment, the connection piece may, for example, have a cable connection sleeve and a collar formed therein. The cable sleeve may also be designed without a collar formed therein. By means of such a cable bushing, for example, cables or litz wires can be easily connected, so that an electrical connection to an electrical conductor can be established.

The connector may be connected to a cable at one longitudinal end. Thus, a direct electrical connection to the cable can be established. The cable may be received in a sleeve at its longitudinal end opposite the connector. Through the sleeve, the cable can be electrically connected with other components.

The cable may also be connected to the welding lug at its end opposite the connector. It can be designed to be flat in particular. For example, further electrical components can be soldered to such solder tabs, whereby they can be electrically connected in a simple and flexible manner.

The cable may be connected to the cable gland at its longitudinal end opposite the connector. In particular, a collar can be formed in the cable bushing. With such a cable bushing, a direct electrical connection to a cable or a strand can be established.

The cable may be connected to another connector at its longitudinal end opposite the connector. A connection can thereby be established between the two connecting pieces. Each connector is here usually designed to be electrically connected to a respective electrical conductor. By means of the embodiment just described with a cable which can electrically connect two connecting elements, a connection can also be established between two electrical conductors in this way.

According to an alternative embodiment, the connector may be connected to another electrical conductor at a longitudinal end opposite the electrical conductor. For example, as described above, the connecting element can be designed as a double connector for this purpose. By means of this embodiment, an electrical connection can be established between two electrical conductors by means of the connector, without requiring further components for this purpose, apart from screws.

The conductive arrangement may be, for example, a ground connector. Such a ground connector can be used, for example, in a ground connection, which is usually used to provide a certain potential as ground potential and to temporarily conduct away high current strengths, for example in the event of a short circuit or other functional fault.

The conductive arrangement may for example form a high current connection. A high-current connection is understood to mean, in particular, a connection which is able to absorb high currents for a short or long time without excessive heat generation, in particular without thermally induced deformations.

The conductive arrangement may for example have a current carrying capacity of at least 20000A. The conductive arrangement also preferably has a current-carrying capacity of at least 40000A. This current carrying capability has proven advantageous for typical applications.

The current-carrying capacity may in particular refer to the current which can flow in a time of 0.1s to 1s, and wherein the temperature rise caused by this current remains below 260K. Here, a typical current intensity may be between 25000A and 45000A, for example.

The conductive arrangement may for example have a resistance of less than 50 μ Ω or less than 200 μ Ω. Such a resistance has proven to be advantageous for typical applications. For applications that are particularly sensitive to resistance, a resistance between 1 μ Ω and 50 μ Ω may also be formulated. It has been shown that such a lower resistance can be achieved by the conductive arrangement design of the invention even in embodiments that are durable and withstand high amperages.

According to an advantageous embodiment, the screw is a break screw. This may apply to all screws or also only to a part of the screws used. The screw may also be a threaded portion of a broken screw after the respective head is broken. Such a threaded portion may also be referred to as a stub. Thus, the screw may in particular break the stub of the screw. This may mean, in particular, that the screw initially has a head during the production process, but that the head is screwed off during the production process.

By using break-away screws, it is ensured in particular that these screws are screwed in up to a certain torque and that the respective head breaks away when a certain torque is reached.

The invention also relates to a concrete element. The concrete member has a concrete body. It has a conductive arrangement as described above with reference to the conductive member. The electrically conductive member of the electrically conductive arrangement is wholly or partly contained in the concrete body. This makes it possible, for example, to provide for a rapid grounding in the event of a trolley wire crash under voltage, as described above.

The cable may in particular be led out of the concrete body. It can also be guided to the surface of the concrete body embedded in the concrete body and/or be connected to electrical connections embedded in the concrete body and accessible from outside the concrete body. Thus, a ground or other electrical connection can advantageously be achieved. For possible connection pieces, see for example the above description.

The invention also relates to a method for forming an electrically conductive arrangement with an electrically conductive connection between an electrical conductor and at least one electrical cable, wherein the method comprises the steps of:

-inserting an electrical conductor into a connector to which a cable for electrically connecting the connector has been or will be connected,

screwing a plurality of screws into a plurality of transverse holes formed in the connecting piece, wherein an electrically conductive connection is formed between each screw and the connecting piece,

rotating each screw such that at least one of the screws makes contact with the electrical conductor and, upon penetration of the electrical conductor, an electrically conductive connection is formed between the electrical conductor and the screw.

With respect to the components mentioned, all statements made herein may be applicable. By means of the method just described, it is advantageously possible to manufacture an electrically conductive arrangement, in particular with regard to the use already described.

The invention also relates to a method for manufacturing a concrete element, comprising the following steps:

-providing a conductive member having a conductive body,

using the conductor of the conductor and forming the conductive arrangement by means of the method described herein,

-encapsulating the conductive member with concrete such that the conductive member of the conductive arrangement is completely or partially contained in the concrete.

All statements herein may be used with respect to the components mentioned. Concrete components can advantageously be produced by the method described, in particular with regard to the use described. In particular, it is thus possible to connect electrically conductive elements, such as concrete reinforcement meshes, in a very simple manner.

The invention also relates to the use of a plurality of screws for forming an electrically conductive arrangement between an electrical conductor and a cable secured to a connector. This has proven to be a particularly simple and reliable practice, as already mentioned with reference to the electrically conductive arrangement and the method.

The invention also relates to a method for forming a current bridge having an electrically conductive connection between an electrical conductor and at least one connecting element. The method comprises the following steps:

-inserting an electrical conductor into the connector,

screwing a plurality of screws into a plurality of transverse holes formed in the connector, wherein an electrically conductive connection is formed between the respective screw and the connector,

-rotating each of said screws such that at least one of the screws is in contact with the electrical conductor and, upon penetration of the electrical conductor, an electrically conductive connection is formed between the electrical conductor and the screw.

By means of the method according to the invention, an electrically conductive connection by means of a current bridge can advantageously be produced. The screws can usually be screwed so far in this case that they penetrate into the electrical conductor as described above and thus establish a reliable and durable connection. A flat connection which is not susceptible to corrosion is also obtained by said penetration.

Preferably, the screws contact the electrical conductor and, with penetration of the electrical conductor, form an electrically conductive connection between the electrical conductor and the screw. Alternatively, however, only a part of the screws used can also contact the electrical conductor and simultaneously form an electrical connection.

Preferably, at least one of the screws, preferably each screw, has at its end facing the electrical conductor a portion tapering towards the electrical conductor. As already explained above, a punctiform pressure can thereby be established, which can simplify the penetration of the outer layer of the electrical conductor, for example.

The tapered section can in principle be deformed, in which case it is particularly important, when a non-conductive layer is present on the electrical conductor, to penetrate the surface or layer of the electrical conductor and to connect electrically there with a tip there without significant resistance. Thus, the screw or its tip or tapered portion will generally only deform slightly.

The method preferably screws the set screw through a transverse bore in the connector prior to inserting the electrical conductor into the connector. The conductor is then preferably pushed into the connector until it abuts the set screw.

Since the screws can be screwed in at different depths, this preferably allows a subsequent control of the position of the electrical conductor in the connection piece. For example, screws can be used which are equally long or which have the same length as their respective stub after the head has been broken. The different depths into which the screw can be screwed can then be ensured, for example, by height changes in the electrical conductor. Alternatively, screws of different lengths or screws with different stubs may be used, for example.

Preferably, the differently projecting remnants or stubs of the cap screws allow a post-positional check of the electrical conductor in the connection piece. The position check mentioned may be, for example, the end stop or the central stop already mentioned above. In connection therewith reference is made to the above statements. It is particularly advantageous here if it is possible to see at a glance whether the electrical conductor has been inserted correctly and whether it is in its correct position.

Through the penetration, an electrical connection is preferably formed with as little resistance as possible. For this purpose, the description of the current-carrying capacity and the resistance is, for example, referred to above. In particular, an electrical connection with as low an electrical resistance as possible can be produced if the insulation on the electrical conductor (if any) is pierced by a corresponding screw and then the interior of the electrical conductor is contacted.

The screw is preferably screwed until a predetermined torque for threading. This ensures a certain penetration, but at the same time prevents the material from being subjected to excessive forces.

Preferably, the predetermined torque can be set for the respective screw in that each screw has a head, which is coupled to the remainder of the screw in such a way that the head is disconnected when the predetermined torque is reached. In this way, it is possible to set in a simple manner up to which torque the respective screw is to be screwed in. In particular, this has been set by the manufacturer of the screws or current connectors, in order to prevent sources of error, such as incorrectly set or incorrectly applied torque wrenches.

The screw-off head can be coupled to the remainder of the screw via a theoretical breaking point. In this way, for example, the torque can be established at which the breakable head is broken. The theoretical breaking point may be, for example, a location with a small local radius.

The screw is preferably designed as a break screw. In this way, the above-mentioned adjustability of the maximum torque can be achieved, for example, in a simple manner.

The screw is preferably designed to remain with its threaded portion in the connecting piece after being screwed to a predetermined torque, with the respective screw head being broken. The torque limitation already mentioned above can thus be realized in an advantageous manner, for example.

The break screw may for example ensure a non-detachable, non-manipulable, optically perceptible and/or controllable electrically conductive connection. In particular, it is possible to check whether the head has been screwed off by simply looking at it. In this case, it can then be assumed with high reliability that the screw has been screwed in with the required or desired torque, so that the electrically conductive connection is also established in the desired manner.

Alternatively, the predetermined torque can be set by means of a torque wrench.

The depth of penetration of the screw into the electrical conductor is preferably related to the predetermined torque. This makes it possible to produce a defined electrical connection.

By means of the method, a conductive arrangement is preferably formed. In this case, it may in particular be a conductive arrangement according to the invention. All of the embodiments and variations described herein may be employed herein.

According to an advantageous embodiment, by means of and combining several components of the electrically conductive arrangement according to the invention, the partial current bridge is preassembled in a working step prior to the final assembly, so that the connection of more than two electrical conductors to the break screw via the connecting piece can be carried out separately. This makes it possible to significantly simplify and more safely carry out the work flow on the work site.

The invention also relates to the use of a plurality of screws for an electrically conductive arrangement formed between an electrical conductor and a connector, and in particular an electrically conductive arrangement according to the invention. All of the embodiments and variations described herein may be employed herein.

It is noted that in the description just made several alternative embodiments of the connecting element have been mentioned. Here, it is in particular a connection piece which is not or at least not necessarily directly connected to a cable. Such an embodiment may be used within the scope of alternative embodiments of the conductive arrangement.

In this connection, it is to be noted in particular that all features and characteristics and processes described in connection with the device can also be used in the meaning of the present invention in the context of the statement of the method of the invention and are to be considered as being disclosed jointly. The same also applies in reverse, i.e. the constructional features according to the device, which are mentioned only in connection with the method, can also be considered and claimed within the scope of the device claims and are also included as a disclosure.

The invention is illustrated schematically, in particular by way of example, in the accompanying drawings, in which:

figure 1 shows a conductive arrangement of the type shown,

figure 2 shows a cross-sectional view of a conductive arrangement,

figure 3 shows the conductive arrangement during manufacture,

figure 4 shows an alternative embodiment of the conductive arrangement,

figure 5 shows a cross-section of a conductive arrangement according to an alternative embodiment,

figure 6 shows a view of the connecting element,

figure 7 shows a connection in the form of a double connector,

figure 8 shows a connector in the form of a disc-shaped connector,

figure 9 shows a connecting element in the form of a block connector,

figure 10 shows a conductive arrangement which is shown,

figure 11 shows a conductive arrangement according to an alternative embodiment,

figure 12 shows a conductive arrangement according to another alternative embodiment,

figure 13 shows a conductive arrangement according to yet another alternative embodiment,

figure 14 shows a double connector which is shown,

figure 15 shows another double connector which is shown,

figure 16 shows a block-shaped connector which,

figure 17 shows the block connector of figure 16 in another view,

figure 18 shows a connector in the form of a disc,

figure 19 shows a double connector which is shown,

figure 20 shows an electrical conductor which is shown,

figure 21 shows a view of the cable as such,

figure 22 shows a cable connection sleeve which,

figure 23 shows a welding tab which is shown,

figure 24 shows a connector in the form of a disc,

figure 25 shows an arrangement of a plurality of electrically conductive arrangements connected to each other,

figure 26 shows three conductive arrangements connected to each other,

fig. 27 shows a concrete member.

Fig. 1 shows a part of a conductive arrangement 10 according to an embodiment of the present invention.

The electrically conductive arrangement 10 has an electrical conductor 20. The conductor is designed as a concrete tendon and is therefore provided with a number of protrusions 22 on its outer surface. The electrical conductor can be formed, for example, from steel, copper, aluminum, brass, zinc or from alloys of these components or alloys containing these components. The electrically conductive body 20 is also coated with an oxide layer, not shown separately, which forms a greater electrical resistance on the surface than inside the electrically conductive body 20.

The conductive arrangement 10 has a connection 30. In which an electrical conductor 20 is accommodated as shown. A plurality of transverse bores 32 are formed in the connecting piece 30, which transverse bores are arranged here along a line extending in the longitudinal direction of the electrical conductor 20.

A respective screw 40 is inserted into each transverse hole 32. For this purpose, the screw 40 or the bore 32 have an external or internal thread, which are complementary to one another and are not shown separately.

Each screw 40 has a corresponding portion 42 that tapers conically or pointed. If the respective screw 40 is screwed in toward the electrical conductor 20, the oxide layer of the electrical conductor 20 can be penetrated by means of the conically tapered portion 42. A particularly advantageous electrical connection can thus be obtained directly between the screw 40 and the electrical conductor 20 or between the interior of the electrical conductor 20.

Each screw 40 has a respective head 46 in which a respective inner contour 48 is formed. The screws 40 can be rotated by means of the inner contour 48 in a known manner, for example by means of a socket head wrench. Here, an inner hexagonal contour is provided, but other inner contours or alternatively an outer contour may also be used.

A respective theoretical breaking point 44 is formed between the respective head 46 and the remainder of the screw 40. The theoretical break point 44 is designed such that the head 46 breaks away from the remainder of the screw 40 when a certain torque is applied to the inner contour 48 or, in general terms, to the head 46. It is thereby ensured that the respective screw 40 can be screwed in with a predetermined torque through the theoretical breaking point 44 and, when the predetermined torque is reached, the respective head 46 is unscrewed. The torque is generally selected such that the screw 40 penetrates the oxide layer of the electrical conductor 20 with its conically tapered portion 42, thus establishing a reliable permanent electrical connection to the interior of the electrical conductor 20. By unscrewing the head 46 it is also achieved that it can be easily visually checked whether the screw 40 has been screwed correctly and that also accidental loosening of the screw 40 is prevented.

Fig. 2 shows a cross section of the electrically conductive arrangement 10 on a screw 40. It can be seen here that the electrical conductor 20 is not arranged completely centrally in the connecting piece 30 and can be easily pressed to one side of the connecting piece 30 by screwing in the screw 40. In this case, the electrical contacting can be established as already described.

The dimensional proportions of the electrical conductor 20 relative to the connection 40, for example, show how the electrical conductor 20 can be centered and held within the connection 40 with a single broken thread path with a small clearance.

Fig. 3 shows the electrically conductive arrangement 10 with the head 46 of the screw 40 broken away. Only the stub of the screw 40 remains, wherein the corresponding conically tapered portion 42 penetrates the electrical conductor 20. This is also shown separately in the enlarged view. Accordingly, a reliable and durable electrical connection is established by forming a corresponding recess 24 in the electrical conductor 20 by penetration of a screw 40. The respective head 46 of the screw 40 can be operated by means of an internal hexagonal wrench 60 which engages into the respective inner contour 48. No torque wrench is required at this point, since the corresponding theoretical breaking point 44 ensures that the correct torque is applied.

For the internal hexagonal wrench 60, for example, a hexagonal wrench or a ratchet wrench or a power screwdriver may be used. It may be equipped (storage or telemetry) with a protocol guide to record the process to ensure quality.

Fig. 4 shows an embodiment of the conductive arrangement 10 with an end stop 70. The end stop 70 is formed by a further additional screw which is screwed in through the transverse bore 32 of the connecting piece 30 and to which the conductor 20 in the connecting piece 30 is moved. Thereby, the correct position of the electrical conductor 20 in the connector 30 can be ensured.

As shown, the screw used as the end stop 70 is screwed further into the connector 30 than the other screws 40. The head of the screw serving as the end stop 70 is typically unbroken. But if the head is broken off, the remaining stub is deeper. This enables to check optically whether the mounting is correct.

Fig. 5 shows an embodiment of the conductive arrangement 10 according to an alternative embodiment. Here, not all transverse bores 32 are arranged along a line, but at least two transverse bores are spaced apart from one another in the circumferential direction. Whereby the screws 40 can be screwed in at different positions on the circumference. As can be seen in fig. 5, a further additional screw 50 is now screwed in at a position spaced circumferentially from the screw 40. This can simplify the contact of the electrical conductor 20.

In this case, the electrical conductor 20 has a smaller diameter than in the embodiment of fig. 2. In this case, a larger gap makes sense, for example, to arrange two rows of centering fracture screws at an angle offset in order to center the electrical conductor 20. Penetration of the electrical conductor surface by the screw tip is achieved successfully, in particular with correct centering.

Fig. 6 shows the connector 30 with the transverse bore 32 formed therein and the screw 40 prior to insertion. Here it can be seen that the cable 84 is connected opposite the region in which the electrical conductor 20 is accommodated. For this purpose, a constriction 41 is formed on the connecting piece 30, which is slipped onto the cable 84. By pressing the constriction 41 onto the cable 84, a permanent and reliable fixing of the cable 84 on the connecting element 30 is obtained. In this case, for example, the entire cable 84 can have an electrically conductive surface, or it can be stripped of insulation at least in the narrowing 41, or else have an electrically conductive surface, so that a good electrical connection is formed between the connection element 30 and the cable 84.

Fig. 7 shows an alternative embodiment of a connecting element 30 with twice as many transverse bores 32 as in the embodiment according to fig. 6. A double connection is thereby possible, i.e. a corresponding electrical conductor can be introduced from both longitudinal ends of the connecting piece 30, which is fixed with four screws each. This enables the direct connection of two electrical conductors by means of only one connector 30 and corresponding screw.

Fig. 8 shows an alternative connection element 30, which is designed as a disk-shaped connector or as a disk press sleeve. For this purpose, a disk 80 is provided on the end face, in which a female thread 81 is in turn formed. This allows other components such as cable bushings or other terminals to be screwed or soldered. Two nail holes are formed in the disc 80, which can be used, for example, to attach the connector 30 to a concrete form.

Fig. 9 shows an alternative connection element 30 designed as a block connector. For this purpose, the connecting element 30 has a portion 82 with a larger diameter, which is arranged at one longitudinal end. In which a hole with an internal thread 83 is provided. Other components can also be easily fixed or welded thereto.

Fig. 10 shows an embodiment of the conductive arrangement 10, wherein a cable 84 is connected to the connector 30. A disc-shaped connector or reel collet 90 with a disc or reel 92 is disposed on an opposite longitudinal end of the cable 84. The same connection principle can thus be used as in the embodiment according to fig. 8, where the disc 92 can be flexibly spatially positioned due to the elasticity of the cable 84.

Fig. 11 shows an embodiment so modified with respect to fig. 10 that, instead of a tape reel collet 90, a solder tab 86 is attached to the cable 84. For example, other cables or other connecting components can be soldered thereto in a simple manner.

Fig. 12 shows a further alternative embodiment, in which, instead of the welding lug 46, a cable bushing 88 with a collar 89 formed therein is provided. For example, a cable may be connected to the collar or a connection screw may be passed through the collar 89 to establish a conductive connection.

Fig. 13 shows a further alternative embodiment, in which at both longitudinal ends of the cable 84 respective connecting pieces 30 are provided with the electrical conductors 20 accommodated therein, wherein each electrical conductor 20 is fixed by means of a respective screw 40. Thereby, the two electrical conductors 20 can be connected to each other in an electrically conductive manner by means of the connection 30 and the cable 84, wherein the cable 84 provides a certain elasticity.

Fig. 14 shows an alternative embodiment, in which a respective cable 84 is fastened to both longitudinal ends of a connecting element 30 designed according to the embodiment of fig. 7 by means of corresponding screws 40. The screws 40 can pass through the respective, possibly outer jacket of the cables 84, so that an electrically conductive connection is established between the two cables 84 by means of the connecting element 30.

Fig. 15 shows an alternative embodiment, where a further electrical conductor 20 is connected directly to the connecting element 30 of the electrically conductive arrangement 10, which is in turn connected at its opposite longitudinal end to a reel collet 90 with a reel 92. Thereby, the two electrical conductors 20 can be connected to each other by means of the connection 30 and provide the function of connecting other components by means of a disc-shaped connector or a disc press sleeve 90.

Fig. 16 shows an alternative connection piece 30 designed as a block connector according to fig. 9, with an electrical conductor 30 and a screw 40 inserted therein. Fig. 17 shows this embodiment in another view. Thus, a typical use of the connector 30, which will be designated as a block connector, for receiving and securing the electrical conductor 20 is shown.

Fig. 18 shows the connecting element 30 according to fig. 8 designed as a disc-shaped connector with the electrical conductors 20 and the screws 40 inserted therein. Fig. 19 shows a double-connector-like connection piece 30 designed according to fig. 7, with two electrical conductors 20 inserted therein and a screw 40 for the fastening thereof.

Fig. 20 shows the electrical conductor 20 alone with the projection 22 visible thereon. Fig. 21 shows a cable 84 having conductive strands 85 and an insulating jacket 87. The cable may be generally elastically pliable and may be used in all embodiments provided with a cable. The sleeve 87 may be partially removed when inserted into an opening to make a conductive connection. In particular, the sleeve 87 can be removed along the portion inserted in said narrowing 41, so as to form an electrical contact there with a minimum resistance.

Fig. 22 shows the cable connection sleeve 88 with the collar 89 in isolation. Fig. 23 shows the welding tab 86 alone. Fig. 24 shows the disc-shaped connector or disc cartridge 90 with disc 92 in isolation. The components shown in fig. 20 to 24 can be used correspondingly in the embodiments already described above. In particular, the components shown in fig. 22-24 represent electrical connectors that may be used to connect the cable 84 to other components, such as a ground connector.

Fig. 25 shows three cables 84 with welded tabs 86 attached respectively thereto and the reverse side attached connector 30, wherein the three welded tabs 86 are welded to each other at one point as shown. Thereby, an electrically conductive connection between the three cables 84 can be obtained. Therefore, the connecting members 30 respectively fixed thereto and the electric conductors 20 accommodated therein can also be electrically connected to each other.

Fig. 26 shows an embodiment in which two cables 84 with the connecting element 30 mounted thereon and the electrical conductor 20 inserted therein are inserted into a further shared connecting element 30, into which one electrical conductor 20 is inserted again on the opposite side, the electrical conductor 20 being fixed with screws 40. Thereby, an electrically conductive connection can be established between the cables 84 and ultimately between the electrical conductors 20.

Fig. 27 shows a concrete element 1 purely schematically. It has a conductive arrangement 10 corresponding to the embodiment shown in fig. 12. The concrete component 1 has a concrete body 2, which is only schematically shown here in the shape of a cuboid. The connector 30 together with the screw 40 and the electrical conductor 20 is arranged completely within the concrete body 2. The cable 84 is connected to the connector 30 within the concrete body 2 but exits the concrete body 2. The connection piece 30 in the form of a cable connection sleeve 88, which is arranged on the cable 84 opposite the connection piece 30, is therefore arranged outside the concrete body 2.

In the present case, the conductor 3 in the form of a bar consisting of concrete reinforcement is fixed in an electrically conductive manner on the conductor 20. The conductive member 3 is completely disposed within the concrete body 2. By the embodiment shown, the bars forming the conductive elements 3 can be connected to the cable sleeve 88 from outside the concrete body 2. For example, if the cable sleeve 88 is connected to a ground wire, the conductive member 3 is also grounded. For example, if a broken railway section trolley line, which is now at a high voltage, strikes the concrete body 2 at a high speed, it damages the concrete body 2 and thereby makes electrical contact with the conductive element 3. Thus, the trolley line is grounded, thereby triggering the fuse and switching the trolley line to no voltage.

The structuring hereinafter presents possible features of the proposed solution. The following features presented in a structured manner can be combined with each other in any way and can be included in the claims of the present application in any combination. It is clear to a person skilled in the art that the present invention originates from a subject with minimal features. In particular, the following presents advantageous or possible designs of the invention rather than the only possible design.

The invention comprises the following steps:

a conductive arrangement, having:

-an electrical conductor (20),

-a connecting piece (30),

-a plurality of screws (40), and

-a cable (84),

-wherein the screw (40) is fixed on and connected in an electrically conductive manner to the connector (30),

-wherein at least one screw (40) penetrates the electrical conductor (20) at its end facing the electrical conductor (20) with an electrically conductive connection between the screw (40) and the electrical conductor (20) being formed, and

-wherein a cable (84) for electrically connecting the connector (30) is conductively fixed to the connector (30).

The above-described electrically conductive arrangement is,

-wherein the electrically conductive arrangement (10) has an electrically conductive member (3),

-wherein the electrical conductor (20) is conductively connected to the electrically conductive member (3) or is an integral part of the electrically conductive member (3).

The above-described electrically conductive arrangement is,

-wherein the conductive member (3) is a concrete reinforcement mesh, a steel plate and/or a conductive body in the form of concrete rigidity.

The above-described electrically conductive arrangement is,

-wherein the conductive member (3) is formed by steel, structural steel or concrete reinforcement.

The above-described electrically conductive arrangement is,

-wherein the connecting piece (30) has a constriction (41) in one end region, which is pressed onto the cable (84) here.

The above-described electrically conductive arrangement is,

-wherein the cable (84) is designed to be pliable and/or flexible.

The above-described electrically conductive arrangement is,

-wherein the cable (84) has an insulating sheath (87) along a main partial region and no insulating sheath in one or more partial regions.

The above-described electrically conductive arrangement is,

-wherein the electrically conductive arrangement (10) has an electrical connection piece which is connected to the electrical cable (84) opposite the connection piece (30).

The above-described electrically conductive arrangement is,

-wherein the electrical connection is designed as a reel press sleeve (90) with a reel (92) or as a soldering tab (86) with a flat end or as a cable connection sleeve (88) with a collar (89) or as a block connector (82).

The above-described electrically conductive arrangement is,

-wherein the electrically conductive arrangement (10) has a current carrying capacity of at least 20000 amperes or at least 40000 amperes.

The above-described electrically conductive arrangement is,

-wherein the electrically conductive arrangement (10) has an electrical resistance between the electrical conductor (20) and the cable (84) of less than 50 micro-ohms or less than 200 micro-ohms.

The above-described electrically conductive arrangement is,

-wherein the conductive arrangement (10) has a resistance between 1 and 50 micro-ohms.

The above-described electrically conductive arrangement is,

-wherein an end stop or central stop (70) is provided between or after the longitudinal ends for checking the position of the electrical conductor (20) to be received in the bore of the connector (30).

The above-described electrically conductive arrangement is,

-wherein the electrically conductive arrangement (10) has at least one screw (40) with a theoretical breaking point (44) by means of which the screw (40) has a defined breaking torque and cannot be removed after breaking.

A concrete component comprising:

-a concrete body (2), and

-a conductive arrangement (10) with a conductive member (3) as described above,

-wherein the electrically conductive member (3) of the electrically conductive arrangement (10) is wholly or partly contained in the concrete body (2).

The above-mentioned concrete structural member is provided with,

-wherein the cable (84) is led out from the concrete body (2), or wherein the cable (84) embedded in the concrete body (2) is led out to the surface of the concrete body (2) and is connected to an electrical connection piece embedded in the concrete body (2) accessible from outside the concrete body (2).

A method for forming an electrically conductive arrangement with an electrically conductive connection between an electrical conductor and at least one cable, the method comprising the steps of:

-inserting electrical conductors into a connector to which a cable for electrically connecting the connector is or will be fixed,

-rotating each of said screws such that at least one of the screws contacts the electrical conductor and, upon penetration of the electrical conductor, an electrically conductive connection is formed between the electrical conductor and the screw.

A method of manufacturing a concrete element, the method comprising the steps of:

-providing a conductive member having a conductive body,

-forming a conductive arrangement using a conductive body of a conductive member by means of the above-mentioned method,

-encapsulating the conductive element with concrete such that the conductive element of the conductive arrangement is completely or partially contained in the concrete.

Use of a plurality of screws for forming an electrically conductive arrangement between an electrical conductor and a cable connected to a connector.

A conductive arrangement having:

-an electrical conductor (20),

-a connecting piece (30), and

-a plurality of screws (40),

-wherein at least one screw (40) penetrates into the electrical conductor (20) at its end facing the electrical conductor (20) with the screw (40) and the electrical conductor (20) forming an electrically conductive connection.

The above-described electrically conductive arrangement, wherein each screw (40) penetrates into the electrical conductor (20) with its end facing the electrical conductor (20) forming an electrically conductive connection between the screw (40) and the electrical conductor (20).

The above-mentioned conductive arrangement, wherein, the screw (40) that penetrates into the electric conductor (20) penetrates into the core material of the electric conductor (20) through the surface layer of the electric conductor (20).

The above-mentioned conductive arrangement, wherein the screw (40) has, at its end facing the conductor (20), a portion (42) that narrows towards the conductor (20).

The above-described conductive arrangement, wherein the portion (42) narrowing towards the electrical conductor (20) is designed in the shape of a cone, a tip, a truncated cone or a pyramid.

The above-mentioned conductive arrangement, wherein the screw (40) is received in a corresponding transverse hole (32) of the connection piece (30) having an internal thread complementary to the external thread of the screw (40).

The above-described conductive arrangement, wherein all the transverse holes (32) are arranged along a line whose course is parallel to the longitudinal axis of the connector (30).

The above-mentioned conductive arrangement, wherein, some horizontal holes (32) are arranged along a line, the course of this line is parallel to the longitudinal axis, and some horizontal holes (32) are relatively staggered in the peripheral direction.

The above-mentioned electrically conductive arrangement, wherein the electrical conductor (20) is a rod, a steel rod, a structural steel rod, a concrete reinforcement, a cable or a stranded wire.

The above-mentioned conductive arrangement, wherein the conductive body (20) is formed of a conductive metal or metal alloy.

The above-described conductive arrangement, wherein the electrical conductor (20) is designed to be round, flat or almost or completely angular, quadrangular or polygonal.

The above-described electrically conductive arrangement, wherein the connecting piece (30) is designed to accommodate the respective electrical conductor (20) not only at the first longitudinal end but also at the second longitudinal end and has a respective transverse hole for screwing in a screw (40) at least at one of the two longitudinal ends.

The above-described electrically conductive arrangement, wherein the connection piece (30) is designed as a double connector.

The above-described conductive arrangement, wherein an end stop or central stop (70) is provided between or behind the longitudinal ends for position checking of the electrical conductor (20) to be received in the bore in the connector (30).

The above-described electrically conductive arrangement, wherein the connection piece (30) is designed as a disc-shaped connector.

The above-described electrically conductive arrangement, wherein the connection piece (30) has a disc (80) transverse to the longitudinal axis of the connection piece (30) for forming a disc-shaped connector on one longitudinal end.

The above-described electrically conductive arrangement, wherein the connection piece (30) is designed as a block connector.

The above-described conductive arrangement, wherein the connection piece (30) has a portion (82) with a larger diameter than the remainder of the connection piece (30) in order to be formed as a block connector on one longitudinal end.

The above-described conductive arrangement, wherein the connector (30) receives a rigid electrical conductor at one end and a cable (84) at the other end, the cable passes into another connector, such as a tape reel press sleeve (90) with a reel (92), or a cable connection sleeve (88) with a flat-ended soldering tab (86) or a ferrule (89), or another connector (30) or a block connector (82).

The above-described conductive arrangement, wherein the connector (30) is connected to the other conductor (20,84) at one longitudinal end opposite the conductor (20, 84).

The above-described conductive arrangement, wherein the further electrical conductor (20,84) is pressed into the connecting element (30).

The above-mentioned conductive arrangement, wherein the conductive arrangement (10) is a ground connector.

The above-described conductive arrangement, wherein the conductive arrangement (10) forms a high current connection.

The above-mentioned electrically conductive arrangement, wherein the electrically conductive arrangement (10) has a current carrying capacity of at least 20000 amperes.

The above-described conductive arrangement, wherein the conductive arrangement has a current carrying capacity of at least 40000 amps.

The above-described conductive arrangement, wherein the current carrying capacity represents the current that can flow (between 25kA and 45 kA) in a time period from 0.1 second to 1 second while the temperature rise caused by the current remains below 260K.

The above-described conductive arrangement, wherein the conductive arrangement (10) has a resistance of less than 50 micro-ohms or 200 micro-ohms.

The above-mentioned conductive arrangement, wherein the conductive arrangement (10) has a resistance between 1 micro ohm and 50 micro ohm.

The above-described conductive arrangement, wherein the screw (40) is a break screw.

The above-described conductive arrangement, wherein the screw (40) is a threaded portion of a broken screw after the respective head is broken.

The above-described conductive arrangement, wherein the screw (40) is a stub of a broken screw.

A method for forming a current bridge (10) having an electrically conductive connection between an electrical conductor and at least one connection member, the method comprising the steps of:

-inserting an electrical conductor into the connector,

-rotating each of said screws such that at least one of said screws contacts the electrical conductor and forms an electrically conductive connection between the electrical conductor and the screw upon penetration of the electrical conductor.

The method described above, wherein the screws contact the electrical conductor and, with penetration of the electrical conductor, an electrically conductive connection is formed between the electrical conductor and the screw.

The above method, wherein at least one, preferably each, screw has a portion at its end facing the electrical conductor that narrows towards the electrical conductor.

The above-mentioned process, wherein,

the method comprises, before inserting the electrical conductor into the connector, screwing a set screw into a transverse hole in the connector,

-wherein the electrical conductor is inserted into the connector to such an extent that it abuts the set screw.

The above-mentioned process, wherein,

since the screws can be screwed in to different depths, a subsequent checking of the position of the electrical conductor in the connecting piece can be achieved.

The above-mentioned process, wherein,

the different extension of the remainder of the break screw allows the position of the electrical conductor in the connection to be checked afterwards.

In the above method, the electrical connection having the smallest resistance is formed by the penetration.

The method wherein the screw is rotated until a predetermined torque for threading.

The method described above, wherein the predetermined torque is set in the respective screw in such a way that each screw has a head, the head being connected to the remainder of the screw in such a way that it breaks when the predetermined torque is reached.

The method described above, wherein the breakable head is connected to the remainder of the screw by a theoretical breaking point.

The method wherein the screw is designed as a fracture screw.

The above method, wherein the screw is designed to be rotated up to a predetermined torque and then left in the coupling with its threaded portion in the event of breakage of the head of the respective screw.

The method above, wherein the break screw ensures a non-detachable, non-manipulatable, optically perceivable and controllable electrically conductive connection.

The method wherein the depth of penetration of the screw into the electrical conductor is related to the predetermined torque.

The method above, wherein the electrically conductive arrangement is formed by means of the method.

The above method, wherein the conductive arrangement is constructed as described above.

The above method, wherein the connection of more than two electrical conductors to the break screw by means of the connecting member can be done separately by pre-assembling the local current bridges in one working step before the final assembly by means of and combining several of the above elements.

In particular, as mentioned above, a plurality of screws are used to form a flow guiding arrangement between the electrical conductor and the connector.

The claims now filed with this application and later filed do not harm the right to obtain further protection.

If, upon closer examination, in particular upon closer examination of the relevant prior art, one or the other feature is found to be advantageous for the purposes of the present invention, but not essential, it is clear that a representation is now sought which, in particular, does not anymore have such a feature in the independent claims. The disclosure of this application also covers such sub-combinations.

It should also be noted that the designs and variants of the invention described in the various embodiments and shown in the figures can be combined with one another as desired. In this case, some features or functions may be interchanged at will. Combinations of these features are also disclosed.

The references stated in the dependent claims indicate the subject matter of the independent claims improved by the features of the respective dependent claims. These should not be construed, however, as a disclaimer of independent, objective protection for the features of the dependent claims. Only the features disclosed in the description or the single features of the claims comprising several features may be employed at any time in the independent claims, since it is essential to the invention that they are defined in relation to the prior art. Even in such cases, it is the case if such features are mentioned in combination with other features, or if particularly advantageous results are obtained in combination with other features.

Claims

1. A conductive arrangement, the conductive arrangement having:

-an electrical conductor (20),

-a connecting piece (30),

-a plurality of screws (40), and

-a cable (84),

-wherein the screw (40) is fixed on the connector (30) and is electrically conductively connected to the connector,

-wherein at least one screw (40) penetrates into the electrical conductor (20) at its end facing the electrical conductor (20) with an electrically conductive connection between the screw (40) and the electrical conductor (20) being formed, and

-wherein the cable (84) is conductively fixed on the connector (30) for electrically connecting the connector (30).

2. The conductive arrangement according to claim 1,

-wherein the electrical conductor (20) is electrically conductively connected to the electrically conductive member (3) or is an integral part of the electrically conductive member (3).

3. The conductive arrangement according to any one of the preceding claims,

-wherein the electrically conductive member (3) is a concrete reinforcement mesh, a steel plate and/or an electrically conductive body formed as a concrete reinforcement; and/or

-wherein the conductive member (3) is composed of steel, structural steel or concrete reinforcement.

4. The conductive arrangement according to any one of the preceding claims,

-wherein the connecting piece (30) has a narrowing (41) in an end region where it is pressed onto the cable (84).

5. The conductive arrangement according to any one of the preceding claims,

-wherein the cable (84) is designed to be pliable and/or elastic; and/or

6. The conductive arrangement according to any one of the preceding claims,

7. The conductive arrangement according to any one of the preceding claims,

-wherein the electrical connection piece is designed as a tape reel press sleeve (90) with a reel (92), or as a soldering tab (86) with a flat end, or as a cable connection sleeve (88) with a collar (89), or as a block connector (82).

8. The conductive arrangement according to any one of the preceding claims,

9. The conductive arrangement according to any one of the preceding claims,

-wherein the electrically conductive arrangement (10) has an electrical resistance between the electrical conductor (20) and the cable (84) of less than 50 micro-ohms or less than 200 micro-ohms, and/or

-wherein the conductive arrangement (10) has a resistance between 1 micro ohm and 50 micro ohm.

10. The conductive arrangement according to any one of the preceding claims,

-wherein an end stop or a central stop (70) is provided between or after the longitudinal ends for checking the position of the electrical conductor (20) to be received in the bore of the connector (30); and/or

-wherein the electrically conductive arrangement (10) has at least one screw (40) with a theoretical breaking point (44) by means of which the screw (40) has a defined breaking torque and is no longer detachable after breaking.

11. A concrete member having:

-a concrete body (2), and

-the conductive arrangement (10) of claim 2 or claims dependent thereon,

-wherein the electrically conductive member (3) of the electrically conductive arrangement (10) is completely or partially contained within the concrete body (2).

12. The concrete member according to claim 11,

-wherein the cable (84) extends from the concrete body (2), or wherein the cable (84) is embedded within the concrete body (2) and is guided towards the surface of the concrete body (2) and is connected to an electrical connection embedded in the concrete body (2) accessible from outside the concrete body (2).

13. A method for forming an electrically conductive arrangement with an electrically conductive connection between an electrical conductor and at least one cable, the method comprising the steps of:

-inserting the electrical conductor into a connector to which a cable for electrical connection of the connector is or will be fixed,

-screwing a plurality of screws into a plurality of cross holes formed in the connector, wherein an electrically conductive connection is formed between each screw and the connector,

-rotating each of said screws such that at least one of said screws contacts said electrical conductor and, upon penetration of said electrical conductor, forms an electrically conductive connection between the electrical conductor and the screw.

14. A method of manufacturing a concrete element, wherein the method comprises the steps of:

-providing a conductive member having a conductive body,

-forming a conductive arrangement by means of the method according to claim 13 using the conductive body of the conductive piece,

-encapsulating the electrically conductive member with concrete such that the electrically conductive member of the electrically conductive arrangement is completely or partially contained in the concrete.

15. Use of a plurality of screws for forming an electrically conductive arrangement between an electrical conductor and a cable secured to a connector.