EP2375422A2 - Isolateur, notamment pour un pantographe d'un véhicule sur rails - Google Patents

Isolateur, notamment pour un pantographe d'un véhicule sur rails Download PDF

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Publication number
EP2375422A2
EP2375422A2 EP11156900A EP11156900A EP2375422A2 EP 2375422 A2 EP2375422 A2 EP 2375422A2 EP 11156900 A EP11156900 A EP 11156900A EP 11156900 A EP11156900 A EP 11156900A EP 2375422 A2 EP2375422 A2 EP 2375422A2
Authority
EP
European Patent Office
Prior art keywords
head
insulator according
support
insulator
support member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP11156900A
Other languages
German (de)
English (en)
Other versions
EP2375422A3 (fr
EP2375422B1 (fr
Inventor
Stefan Jutz
Wilhelm Kraemer
Guenther Mohr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Georg Jordan GmbH
Original Assignee
Georg Jordan GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Georg Jordan GmbH filed Critical Georg Jordan GmbH
Publication of EP2375422A2 publication Critical patent/EP2375422A2/fr
Publication of EP2375422A3 publication Critical patent/EP2375422A3/fr
Application granted granted Critical
Publication of EP2375422B1 publication Critical patent/EP2375422B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/14—Supporting insulators
    • H01B17/16—Fastening of insulators to support, to conductor, or to adjoining insulator
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/32—Single insulators consisting of two or more dissimilar insulating bodies
    • H01B17/325—Single insulators consisting of two or more dissimilar insulating bodies comprising a fibre-reinforced insulating core member

Definitions

  • the invention relates to an insulator, in particular for a pantograph of a rail vehicle.
  • Such insulators are installed in the roof area of a rail vehicle and serve for isolated support.
  • the insulator must pass high mechanical alternating loads.
  • the bending stresses induced by the pantograph must be included.
  • the insulator must have sufficient electrical resistance to prevent breakdown of high voltages, such as those caused by a lightning strike.
  • Known long-rod insulators in high-voltage overhead lines generally have a solid core made of glass fiber reinforced plastic and a shield made of silicone.
  • composite insulators have been used on the roof of rail vehicles for years for reasons of weight saving according to this principle.
  • a major disadvantage of these insulators is that these insulators are not mechanically dimensionally stable, especially at high speeds. To fulfill the mechanical properties, the insulators are therefore usually made solid.
  • insulators made of epoxy resin or porcelain are also known. These components have a very high weight, which is undesirable, especially in the head region of a rail vehicle.
  • the insulator on a head and a foot part, which are electrically insulated from each other and each having a connecting piece.
  • the current collector can be connected to the connection piece of the head section.
  • the foot part serves for connection to the rail vehicle.
  • Head and foot are connected to each other by means of a trained as a hollow profile support member.
  • the distance between the head and the foot part is covered on the outside of the support member by means of an insulating jacket.
  • the support member may be manufactured as a low weight component while having sufficient stability.
  • hollow profiles have a high resistance to bending, so that they are optimally suited for the present application.
  • the insulating jacket completes the insulator and guarantees sufficient dielectric strength to meet the electrical requirements.
  • the support member consists of a glass fiber reinforced plastic. This material is characterized by a low weight and a very high mechanical stability.
  • the support member is formed as a pipe section section.
  • the support member regardless of the loading direction, it always has the same equatorial moment of resistance to bending in the cross-sectional plane. It can thus reliably absorb the changing stresses during railway operation.
  • a conceivable alternative of the invention is such that the head part has a lug which comprises the support part on its outer circumference.
  • the approach can be tightly connected to the support member in the region of the grip, so that an electrical tightness can be produced.
  • the inner cross section of the approach is adapted to the outer cross section of the support member adapted in the connection region, so that here an air-tight connection can be produced. This air-tightness guarantees that no harmful, due to current flow erosion can occur during operation.
  • a further preferred embodiment variant of the invention is the shape that the foot part has a support portion which supports the support part transversely to its longitudinal extent form-fitting manner. This form-fitting guaranteed in a simple way across the main load direction, a secure fixation between the support member and footboard.
  • the support section additionally catches the support part in the area in which the highest bending stress occurs during operation. In this way, a strength-optimized design of the insulator is achieved.
  • Similar to the head part and the support portion may include the support member on the outer periphery.
  • the dimensional design of support section and support member may be such that again an electrical and airtight connection can be produced.
  • a preferred embodiment of an insulator is such that the support member in the approach of the head part and / or in the support portion of the foot part cohesively fixed, in particular glued.
  • the material bond (the bond) guarantees airtightness in the connection area between the supporting part and the head / foot part.
  • the cohesive connection in this area is a particularly suitable connection method, because it is charged here on thrust, which is the preferred load variant for cohesive connections.
  • a material-optimized transition between the support member and the head and the foot part is possible via the cohesive connection, because on the choice of material of the cohesive connection, an adaptation of the contact resistance between the two components can be achieved.
  • An insulator according to the invention may be characterized in that the supporting part is supported by means of an insulating piece at the end face relative to the head and / or foot part. In this way, an additional isolation is achieved, which increases the lay length.
  • the insulating piece should be designed so that the lay length through the support member is longer than the lay length over the insulating jacket. Then a current dissipation over the insulating jacket is guaranteed.
  • the insulating piece may preferably consist of a silicone material or EPDM, which has high resistance properties.
  • silicone material is flexible, so that it seals the all-round open surface of the support profile airtight all round and thus guarantees the electrical resistance.
  • the insulating jacket consists of cast resin.
  • a casting resin system based on epoxy resin or optionally silicone may be used, casting resin is particularly good. Has properties in terms of dimensional stability at high speeds.
  • the casting resin can be poured onto the supporting part and, if necessary, the head or foot part.
  • airtight seals are produced, which guarantee the fatigue strength of the insulator (see above for erosion).
  • the infused insulating jacket forms a liquid-tight seal, so that penetration of moisture into the intermediate regions between the insulator jacket and support or between insulator jacket and head / foot part is prevented.
  • the insulating jacket is sealed relative to the head and / or foot part by means of a sealing element.
  • the insulator has an upper head part 30 and a lower foot part 20.
  • an insulator jacket 10 is arranged, which has a head section 11 and a foot section 13.
  • screens 12 are arranged, which serve to increase the electrical creep length.
  • FIG. 2 shows the insulator in vertical section.
  • the head part 30 and the foot part 20 by means of a support member 40 are spaced from each other.
  • the support member 40 consists mainly of a deflected profile section on GRP material.
  • FIGS. 3 and 4 let recognize an assembly consisting of foot 20, head 30 and support member 40 in more detail.
  • the support member 40 has an upper and a lower connecting portion 41, 42.
  • the upper connecting portion 41 serves for coupling the head part 30, the lower connecting portion 42 serves for coupling the foot part 20.
  • the support part 40 encloses an inner space 43 with a circular cross section.
  • the head part 30 has a connection piece 31 into which a fastening receptacle 32 is inserted.
  • the connector 31 terminates in a support flange 33, which is aligned radially to the central longitudinal axis of the mounting receptacle 32.
  • the pantograph of a rail vehicle can be coupled. The pantograph is then connected via the attachment receptacle 32 with the insulator.
  • the head part 30 has a circumferential groove, which can receive an O-ring as a seal receptacle 34.
  • the head part 30 carries a cylindrical projection 35 which an inner receptacle for the support member 40 encloses.
  • the inner cross section of the projection 35 is adapted to the outer cross section of the support member 40.
  • the foot part 20 in turn has a connection piece 21, which is provided with a flat footprint 22.
  • the contact surface 22 is perpendicular to the central longitudinal axis of the support member 40.
  • the connecting piece 21 is followed by a transition portion 24, a support portion 25 at.
  • the support portion 25 encloses an inner receptacle, in which the support member 40 is inserted.
  • the inner receptacle is adapted in its cross section to the outer geometry of the support member 40.
  • an insulating piece 50 in the form of a disc consisting of silicone material or EPDM.
  • a thin layer of liquid silicone material is brushed between the insulating piece 50 and the facing bottom surface in the foot part 20 in order to guarantee an air-tight connection between insulating piece 50 and foot part 20.
  • the support member 40 is coated on its outer periphery in the region of its insert length in the inner receptacle of the support portion 25 with an adhesive.
  • the metal foot part 20 is dimensionally dimensioned so that a press fit between the support member 40 and support portion 25 is present. For this reason, the foot part 20 is heated prior to assembly. It then expands, so that the support member 40 can be joined largely powerless in the support section 25. Then, the support member 40 connects via the adhesive layer form-fitting manner with the foot part 20.
  • the support member 40 is inserted into the support portion 25 that the insulating piece 50 is compressed.
  • an airtight connection in this area between the end face of the support member 40 and the insulating piece 50 is made.
  • the head part 30 is coupled.
  • an insulating piece 50 is glued in the form of a silicone disk in the neck 35 again.
  • the head part 30 is heated and slipped over the adhesive-coated support member 40.
  • the head portion 30 is cooled to form a press fit between the outer periphery of the support member 40 and the inner surface 36 of the boss 35. During the cooling process and the incipient bonding between the joining partners, a mounting pressure is maintained, which guarantees that the open end of the support member 40 compresses the insulating piece 50 to form a tight connection.
  • the according to FIG. 3 or 4 produced assembly is then placed in a mold and encased therein by casting resin.
  • the casting resin then forms the insulating jacket 10th
  • FIG. 5 shows the bottom view of the assembly according to the FIGS. 3 and 4 , As can be seen from this illustration, two holes are provided, which form inlet openings for the casting resin, which is introduced into the casting mold.
  • sprues 14 In the area of the inlet openings 23 are sprues 14, as the FIG. 2 lets recognize. These sprues 14 close the inlet openings 23 tight. Offset by 90 ° to the inlet openings 23 20 mounting holes 27 are provided in the foot part in the form of holes in the foot part. About this mounting receivers 27, the foot part 20 can be bolted to a roof assembly of the rail vehicle.

Landscapes

  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
  • Insulators (AREA)
EP11156900.0A 2010-04-09 2011-03-04 Isolateur, notamment pour un pantographe d'un véhicule sur rails Not-in-force EP2375422B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010016384A DE102010016384A1 (de) 2010-04-09 2010-04-09 Isolator, insbesondere für einen Pantographen eines Schienenfahrzeugs

Publications (3)

Publication Number Publication Date
EP2375422A2 true EP2375422A2 (fr) 2011-10-12
EP2375422A3 EP2375422A3 (fr) 2013-11-13
EP2375422B1 EP2375422B1 (fr) 2017-12-27

Family

ID=44168352

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11156900.0A Not-in-force EP2375422B1 (fr) 2010-04-09 2011-03-04 Isolateur, notamment pour un pantographe d'un véhicule sur rails

Country Status (2)

Country Link
EP (1) EP2375422B1 (fr)
DE (1) DE102010016384A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3229242B1 (fr) * 2016-04-04 2020-02-12 Siemens Aktiengesellschaft Traversée haute tension
CN111688494A (zh) * 2020-07-01 2020-09-22 青岛润威交通设备有限公司 一种车载受电系统
CN114628091A (zh) * 2022-02-22 2022-06-14 北京中车赛德铁道电气科技有限公司 一种受电弓用支持绝缘子

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017216730A1 (de) * 2017-09-21 2019-03-21 Siemens Mobility GmbH Isolator
DE102019121932B4 (de) * 2019-08-14 2024-11-21 Bombardier Transportation Gmbh Isolator für ein Schienenfahrzeug und Stromabnehmer
DE102021105875B4 (de) 2021-03-11 2024-12-19 Maschinenfabrik Reinhausen Gmbh Isolator für Hochspannungsanwendungen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE684741C (de) * 1936-04-15 1939-12-04 Siemens Schuckertwerke Akt Ges Hohler Stuetzisolator mit einer isolierenden Schicht an der dem Fuss zugekehrten Stirnseite
FR2655471B1 (fr) * 1989-12-01 1992-02-21 Sediver Ste Europ Isolateurs V Isolateur electrique rigide.
FR2800690B1 (fr) * 1999-11-10 2001-12-07 Alstom Ensemble comprenant un premier chassis et un deuxieme chassis pendulant lateralement par rapport au premier chassis, et vehicule ferroviaire correspondant
GB2432565B (en) * 2005-11-28 2009-05-13 Aea Technology Plc Pantograph with sensors

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3229242B1 (fr) * 2016-04-04 2020-02-12 Siemens Aktiengesellschaft Traversée haute tension
CN111688494A (zh) * 2020-07-01 2020-09-22 青岛润威交通设备有限公司 一种车载受电系统
CN114628091A (zh) * 2022-02-22 2022-06-14 北京中车赛德铁道电气科技有限公司 一种受电弓用支持绝缘子

Also Published As

Publication number Publication date
EP2375422A3 (fr) 2013-11-13
DE102010016384A1 (de) 2011-12-15
EP2375422B1 (fr) 2017-12-27

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