DE102012017164A1 - Two-part mast structure for track-bound overhead line system for electrically operated rail- or drive-bound transportation unit, has upper mast part designed as carbon fiber reinforced plastic- or wooden-plastic composite material - Google Patents

Abstract

The structure (1) has a non-insulated lower mast part (2) placed on a foundation (4), and designed as a steel or concrete structure. An insulated upper mast part (3) is placed on the lower mast part, and designed as a carbon fiber reinforced plastic- or wooden-plastic composite material or a wooden structure in an insulating construction. A fixing part (5) and connecting straps/pipes are provided between the lower and upper mast parts. Bolts are attached in the upper mast part. Adapter plates are attached at the lower mast part. The bolts are directly screwed with the adapter plates.

Description

The invention relates to a mast construction for track-bound overhead line systems of rail transport, wherein the mast is arranged on or in or on a foundation.

In the infrastructure sector of electrically operated rail or road transport, masts are used to carry the overhead lines required for the power supply. At present reinforced concrete or steel mesh or flat or HE masts are often used for this, which absorb the forces acting on the masts forces or bending moments and to ensure a firm anchorage in the ground. For the safe and reliable operation of the overhead line systems, carrying devices for the overhead line and sufficient insulation capacity are required. For the leadership of the overhead line chains these must be attached by means of fittings to the support devices. The separation between live parts and the support means is done by insulators. These isolators are often the target of vandalism, but can also be bridged and damaged by birds and small animals. As a rule, this leads to the death of the animals.

A trolley mast with an elongated steel profile part and a mast base deepened in the ground, which is embedded in a concrete foundation, is known (US Pat. EP2447420A1 ).

From the DE 20 2007 018 066 U1 a device for short-circuit detection of insulators of catenary systems is known, wherein one or more transponders are respectively mounted in front of or behind an insulator and thus outside the main flow path.

The EP 0 456 869 B1 describes a mast construction, which consists of a mast with a downwardly hollow foot and an inner shell, wherein the mast base is pushed onto the foundation body and in the hollow base spacers are arranged.

A similar construction describe the DE 10 2008 009 057 A1 and the EP 2 383 406 A2 in each of which a hollow body having anchoring or a special fastening device having support structure for electric cables carrying wooden poles are shown.

From the DE 20 2006 016 481 U1 describes a carrier composite system for wooden poles, wherein two carriers are connected to one another via a anchored with anchor pins composite anchor.

Finally, a catenary mast is known, which is carried out verrück- and extendable ( DD 223 762 A1 ). The extensibility of the mast boom is achieved via a jack lifting device, wherein both parts of the mast arm can be moved against each other and clamped.

All said devices have in common that the masts have a high weight, a complex isolation technique, a low protection against vandalism and birds and a high susceptibility to interference.

The invention has for its object to develop a mast construction for overhead lines of track systems, which has a low weight, a simple isolation technique, high protection against electrical flashovers, vandalism and birds and a low susceptibility to interference. In addition, the interests of electrical safety for persons in residence in the vicinity of the overhead line systems are ensured by the invention.

This is achieved according to claim 1 according to the invention.

• • durch Aufstecken des oberen Teils auf/in den unteren (vorzugsweise formschlüssig)
• • durch Verbindungslaschen/-rohre zwischen oberem Teil und unterem Teil
• • durch direktes Verschrauben von in den oberen Teil eingebrachten Bolzen mit entsprechenden Adapterplatten im unteren Teil
• • durch seitliches Anklammern an den unteren Mastteil

erfolgen.The connection between the insulating upper mast part and the lower mast part can either

• • by placing the upper part on / in the lower (preferably form-fitting)
• • by connecting straps / tubes between upper part and lower part
• • by directly screwing bolts inserted in the upper part with corresponding adapter plates in the lower part
• • by clinging to the lower part of the mast at the side

respectively.

In this case, the attachment to the lower part by clamps (eg, with angle or U-profiles, clamps) or by direct screwing to welded components or placed on the concrete mast bushings.

Alternatively, the upper part can also be inserted into tubes attached to the lower part and then screwed.

• 1. Höhere Durchbiegefestigkeit bei schlankerer Gesamtkonstruktion, verbunden mit
• 2. Definiertem Erdpotential im Berührschutzbereich und
• 3. Verzicht auf Isolatoren an Auslegern und/oder zusätzlichen Leitungen, sowie
• 4. Verzicht auf andere Vogel- und Kleintierschutzmaßnahmen, wobei bei diesem Anspruch der Vogel- und Kleintierschutz allein durch ausreichenden Isolierabstand erreicht wird und damit sekundäre Gefährdungen, wie z. B. dass Tiere sich in den bisher üblichen Abweisern verfangen, wegfallen.

This achieves:

• 1. Higher sag resistance in a slimmer overall construction, combined with
• 2. Defined earth potential in the contact protection area and
• 3. Waiver of insulators on booms and / or additional lines, as well
• 4. Waiver of other bird and small animal protection measures, in this claim the Bird and small animal protection is achieved only by sufficient isolation distance and thus secondary hazards, such. B. that animals get caught in the usual deflectors, omitted.

The non-conductive upper mast part can be performed either round or square or otherwise polygonal.

The upper mast part can taper upwards. As a result, on the one hand a lower weight is achieved and at the same time achieved when using clamp fittings for the boom and other attachments that they are secured against slipping down. Alternatively, additional structures can be incorporated into the surfaces, which close in a form-fitting manner with the add-on parts and thus reliably prevent slippage of the add-on parts downwards. The mast booms themselves can be fastened to the upper part in the same way as with the HE steel mast or with square concrete masts via existing clamps made of angle iron / U-profiles / clamps. Alternatively, sockets machined into the mast can be used for attachment, similar to concrete masts.

The non-conducting upper mast part can be equipped with additional screens (eg made of silicone) at the lower and / or upper end to extend the creepage distances. Similar to composite insulators, these screens can also be attached to the non-conductive top by shrink-fitting or gluing. Ideally, the upper part is round in these areas. Alternatively, the additional screens can be dispensed with if the mast surface is designed by corresponding similar structures so that the creepage distances (for the current) are prolonged (eg wave or screen structure).

At the top of the mast, components such as reinforcing cables, return cables and switches are already being installed today. These must be able to be isolated from the overhead line. The additional insulation with additional screens serves this purpose. Alternatively, the additional screens can be dispensed with if the mast surface is designed by corresponding similar structures so that the creepage distances (for the current) are prolonged (eg wave or screen structure).

The upper non-conducting mast section may be equipped with additional screens between boom mounts to extend creepage distances on outriggers connected to different feed systems. At system and / or phase separation points, the cantilevers may be at different potentials. In order to be able to do without additional insulation in the arms, the insulation between the attachments of the boom must be large enough. By using additional screens in the insulating part of the masts this can be achieved. Alternatively, the additional screens can be dispensed with if the mast surface is designed by corresponding similar structures so that the creepage distances (for the current) are prolonged (eg wave or screen structure).

In the insulating upper mast part conductive inner reinforcements can be introduced, which connect to parts of the system at ground potential on or on the upper part. Ideally, these internal reinforcements are conductively connected to mounting / grounding jacks for additional attachments.

The lower mast part has a height of at least 3.5 m above the standing surface. This mast part can be made in conventional, grounded steel and concrete design and thus represents a defined grounding potential.

Due to the two-part form of the mast construction, the deflections of the construction are also limited so that only permissible effects on the contact wire position arise.

The use of an insulating mast attachment ensures bird and small animal protection and does not require additional measures, such as larger distances or deflectors. As a result, the entire height of the mast can be minimized.

embodiment

Reference to an exemplary embodiment, the invention will be explained in more detail below.

Showing:

1 - The two-part mast construction in cross section

2 - The upper end of the mast construction with different additional creepage distances

3 - The upper end of the mast construction with additional creepage distance to the insulation and boom with different mounts to the mast

4 - different mast transition fixings

5 - Inner (conductive) reinforcement with connection to the screw connection and sockets

The two-part mast construction ( 1 ) has a (non-isolated) lower mast part ( 2 ) and an (insulated) upper mast part ( 3 ) on. The lower mast part ( 2 ) is on a foundation ( 4 ) attached. The lower mast part ( 2 ) is a fixation ( 5 ) with the upper mast part ( 3 ) firmly and as positively as possible connected. This can be achieved by means of a push-on or push-fit ( 6 ; 7 ) or by connecting straps / tubes ( 8th ) or by a direct screw connection of both mast parts ( 2 ; 3 ) by means of attached adapter plates ( 9 ) respectively. Alternatively, a lateral bracket ( 10 ) possible at the lower mast part.

At the lower and / or upper end of the upper mast section ( 3 ) umbrellas ( 11 ) or waves ( 12 ) or plates ( 13 ) are glued or shrunk as creepage distances for a possible flashover or similarly fastened.

Between the creepage distance (s) is the boom ( 14 ) with angles ( 16 ) or u-profiles on the rectangular or with clamps ( 15 ) clamped to the round or polygonal mast or over beech ( 17 ) in the mast.

In the (insulated) upper mast section ( 3 ) may additionally have a conductive inner reinforcement ( 22 ) can be arranged. This has a connection ( 20 . 21 ) to parts of the system with ground potential. Other parts of the system can be earthed via the bushes and the inner reinforcement.

LIST OF REFERENCE NUMBERS

1

split mast construction

2

lower part of the mast

3

upper mast part

4

founding

5

fixation

6

Aufstecküberschuhung

7

Einstecküberschuhung

8th

connecting straps

9

adapter plates

10

clinging

11

umbrellas

12

waves

13

plates

14

boom

15

Clamp for round or polygonal mast

16

straight angles (or U-profiles) for rectangular mast

17

Rifle

18

Ground or mounting socket

19

Component with earth potential

20

Connection ( 22 ) With ( 18 )

21

Connection ( 22 ) With ( 19 )

22

internal reinforcement

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 2447420 A1 [0003]
• DE 202007018066 U1 [0004]
• EP 0456869 B1 [0005]
• DE 102008009057 A1 [0006]
• EP 2383406 A2 [0006]
• DE 202006016481 U1 [0007]
• DD 223762 A1 [0008]

Claims (8)

Mast construction for track-bound overhead line systems of rail traffic, characterized in that the mast construction ( 1 ) is composed of at least two components, one on a foundation ( 4 ) attached lower mast part ( 2 ) as a steel or concrete structure and an upper mast part ( 3 ) is designed as CFK or wood-plastic composite or wood construction in insulating construction. Mast construction according to claim 1, characterized in that the fixation ( 4 ) between the lower and the upper mast part ( 2 ; 3 ) - by plugging or unplugging ( 6 ; 7 ) of the upper mast part ( 3 ) on / in the lower part of the mast ( 2 ) (preferably form-fitting) - by connecting straps / tubes ( 8th ) between the lower and the upper mast part - by directly screwing into the upper mast part ( 3 ) introduced bolt with at the lower mast part correspondingly mounted adapter plates ( 9 ) - by lateral clinging ( 10 ) to the lower mast part, whereby the attachment - by clamping with clamps ( 15 ) on round or polygonal masts - by clamping with angles and / or U-profiles ( 16 ) on the rectangular mast - through sockets ( 17 ) or pipes - is realized by screwing. Mast construction according to claim 1 and 2, characterized in that in the region of the tip of the upper mast part ( 3 ) and / or its lower part of the mast ( 2 ) indicative range umbrellas ( 11 ) or waves ( 12 ) or plates ( 13 ) are arranged as a creeping distance, which are attached by means of gluing or shrinking or in a similar manner. Mast construction according to claim 1 to 3, characterized in that in the upper mast part ( 3 ) conductive internal reinforcements ( 22 ) are introduced. Mast construction according to claim 4, characterized in that the inner reinforcement ( 22 ) with sockets ( 18 ) connected to the attachment and / or grounding of additional attachments ( 20 ). Mast construction according to claim 4 and 5, characterized in that the inner reinforcement ( 22 ) a connection ( 19 ) to parts of the system with earth potential. Mast construction according to claim 1, characterized in that the lower mast part ( 2 ) is designed in a construction in steel construction in HE or double HE or flat or lattice mast or pipe form and in a design in concrete construction in round or polygonal design. Mast construction according to claim 1 and 7, characterized in that the lower mast part ( 2 ) a height of at least 3.5 m above the foundation pad ( 4 ) having.

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