DE10240432B4 - Guide roller for contact wire pull on the side holder - Google Patents

Abstract

Device for fixing a contact wire of a catenary to a side support of a boom of a catenary mast during pulling and guying of the contact wire (3), characterized in that the contact wire in the region of the tip of the side support (8)
- Is guided over at least one in the drawing and guying direction rotatable guide roller (1),
- The guide roller (1) by means of a bracket construction (2) at the top of the side holder (8) is mounted
- The above the guide roller (1) running contact wire (3) by means of a lock (4) which is fixed in height adjustable on the bracket construction (2) and can be locked with a clamping device (5) is secured against possible falling out.

Description

The The invention relates to a device for fastening a contact wire a catenary on a side bracket of a boom in particular a trolley pole during pulling and guying the contact wire. This pulling and unclamping of the contact wire takes place when new equipment or replacement of the contact wire the overhead line. Overhead lines to which the invention relates find their application especially in railways and trolleybuses, so-called O-buses.

Of the Catenary of a catenary is under during its operation under a mechanical tension in the longitudinal direction laid. This mechanical tension is applied to the two ends of the Contact wire generated by tie bars, where the contact wire with Weights, especially concrete weights, is stretched. Between Abspannwerken is the contact wire at catenary bases on overhead pylons with side supports at a certain height above the Roadway edge held. additionally is the contact wire through the side holder in a so-called zig-zag course held to a uniform abrasion of pantographs of vehicles. Task of mechanical Tensioning the contact wire is that the contact wire as possible little bends down between the individual side brackets.

at New installation or replacement of the contact wire of the catenary of a Route will be the contact wire first movably attached to the respective side bracket of the boom. Thereupon, the contact wire with a little more length than required up to the side bracket of the boom of the next, following trolley masts laid. Is the contact wire completely laid between two guy stations, he is mechanically at its two ends to the final, from dependent on the superstructure type Operating tractive force tautened. Here, the contact wire moves in the mobile storage on the side supports between 30 cm and 90 cm and will reach the final traction and thus its final position clamped on the side holder in a side holder clamp.

was standing The technique is that the new contact wire during pulling and guying on the side bracket of the boom with copper wire or with an S-shaped curved hook, so-called. S-hook, is mounted movable in tension and guying. The Fixing with copper wire or S-hook is very cost-effective. In front In particular, the copper wire attachment is preferably used because of corresponding copper wire during assembly of the overhead line anyway in big Quantities available stands, copper wire is easy to handle and no or only one requires very little effort in instructing the assembly personnel.

• – Der Fahrdraht wird bei dem Ziehen durch die Kupferdrahtbefestigung bzw. den S-Haken sehr häufig mechanisch beschädigt. Hierdurch treten Unebenheiten an der Kontaktfläche Fahrdraht-Stromabnehmer auf, die sich im Laufe der Betriebszeit vergrößern, zu einem Lichtbogen und Abbrand zwischen Fahrdraht und Stromabnehmer führen und damit die Liegezeit des Fahrdrahtes verkürzen.
• – Der Fahrdraht kann sich während der Montage – zum Teil mehrfach – um seine Längsachse verdrehen, so dass er in einem nachfolgenden Kontrollgang wieder zurück gedreht werden muss.
• – Der Fahrdraht kann sich in der Kupferdrahtbefestigung bzw. dem S-Haken verklemmen, so dass sich beim Ziehen und Abspannen häufig der Seitenhalter schräg stellt. Dies tritt vor allem in Kurven der Strecke auf, in denen die Zug- und Abspannrichtung des Fahrdrahtes leicht schräg gegenüber der Zug- und Abspannrichtung in der Geraden ausgerichtet ist. Folge ist ein Kontrollaufwand, um die Lage der Seitenhalter zu überprüfen und gegebenenfalls wieder in ihre erforderlichen Lage zu bringen. Erst dann ist eine Übernahme des Fahrdrahtes auf das Abspannwerk möglich.
• – Durch das Verklemmen des Fahrdrahtes in der Kupferdrahtbefestigung bzw. dem S-Haken stellt sich zudem der Seitenhalter zum Teil in einem solchen Maße quer, dass der Seitenhalter beschädigt wird. Insbesondere brechen die Isolatoren des Seitenhalters.
• – Durch das Verklemmen des Fahrdrahtes in der Kupferdrahtbefestigung bzw. dem S-Haken kommt es bei weiterem Ziehen und Abspannen des Fahrdrahtes zu einem nachfolgenden pötzlichen Lösen der Verklemmung. Hierdurch entstehen ruckartige Bewegungen im Fahrdraht, die ein definiertes, kontinuierliches Abspannen des Fahrdrahtes verhindern.
• – Durch das Verklemmen des Fahrdrahtes in der Kupferdrahtbefestigung kommt es vor, dass bereits während der Montage des Fahrdrahtes, aufgrund von Zugkräften während der Montage der Kupferdraht reißt. Dieses Reißen geschieht üblicherweise dann, wenn sich das Bedienungspersonal, das den Fahrdraht zumeist nachts montiert, bereits mehere hundert Meter von der Rissstelle weiterbewegt hat. Es geschieht somit unbemerkt. Desweiteren kann das Reißen einer einzelnen Kupferdrahtbefestigung zu einem kettenreaktionsartigen Reißen weiterer Kupferdrahtbefestigungen führen, wodurch zum Teil mehrere hundert Meter Fahhdraht herunter gerissen werden.
• – Vor allem in Kurven besteht – aufgrund erhöhter Querzugkräfte – die Gefahr des Reißens der Kupferdrahtbefestigung, so dass in diesem Bereich weitere Maßnahmen zur Sicherung des Fahrdrahtes getroffen werden müssen.
• – Das Einklemmen des Fahrdrahtes in die Seitenhalterklemme wird durch die verwendeten Kupferdrähte bzw. die S-Haken erschwert, da die Schrauben der Seitenhalterklemme durch den Kupferdraht bzw. den S-Haken verdeckt werden.
• – Die Befestigung mit S-Haken ist unfallgefährlich, da der Fahrdraht aus dem offenen S-Haken wieder herausfallen kann.

However, these advantages of the prior art are counteracted by some disadvantages:

• - The contact wire is very often mechanically damaged when pulled by the copper wire attachment or the S-hook. As a result, bumps occur at the contact surface contact wire pantograph, which increase in the course of the operating time, lead to an arc and burnup between the contact wire and pantograph and thus shorten the waiting time of the contact wire.
• - The contact wire may twist during assembly - sometimes several times - about its longitudinal axis, so that it must be turned back in a subsequent inspection.
• - The contact wire may jam in the copper wire attachment or the S-hook, so that when pulling and clamping often the side holder is inclined. This occurs especially in curves of the route, in which the tension and guying direction of the contact wire is slightly obliquely aligned with respect to the tensile and guying direction in the straight line. Result is a control effort to check the position of the side holder and, if necessary, to bring back to their required position. Only then is a takeover of the contact wire on the substation possible.
• - Due to the jamming of the contact wire in the copper wire attachment or the S-hook, in addition, the side holder is partly transverse to such an extent that the side holder is damaged. In particular, break the insulators of the side holder.
• - Due to the jamming of the contact wire in the copper wire attachment or the S-hook occurs when further pulling and clamping the contact wire to a subsequent sudden release of the jamming. This results in jerky movements in the contact wire, which prevent a defined, continuous tensioning of the contact wire.
• - Due to the jamming of the contact wire in the copper wire fastening, it happens that already breaks during the installation of the contact wire, due to tensile forces during assembly of the copper wire. This tearing usually occurs when the operator, who usually mounts the contact wire at night, has already moved several hundred meters from the crack site. It happens thus unnoticed. Furthermore, the rupture of a single copper wire fixture can result in a chain reaction-like cracking of further copper wire fixtures, sometimes tearing down several hundred meters of wire.
• - Especially in curves - due to increased transverse tensile forces - the risk of tearing the Kup Ferdrahtbefestigung, so that in this area further measures to secure the contact wire must be made.
• - The jamming of the contact wire in the side holder clamp is made difficult by the copper wires or the S-hooks used, since the screws of the side holder clamp are covered by the copper wire or the S-hook.
• - Attachment with S-hooks is dangerous for accidents, since the contact wire can fall out of the open S-hook again.

So far These disadvantages of the prior art mentioned by the Operator of the line and client of the construction or maintenance measure the overhead line due to the financial savings during the Construction phase tolerated - the Fix the contact wire to the side support with copper wire or S-hook is cheap. Increasingly, the operators of the Route and client of the construction or maintenance measure the overhead line not only the costs during the construction phase but also the operating costs of the route as well as the following costs for the maintenance the overhead line, the so-called life cycle costs LCC. activities and devices that reduce construction costs but subsequently Increase the operating costs and costs of maintenance inadmissible, can not in the future more to be accepted.

Out DE 526 889 C a method of trolley installation is known in which the contact wire is not temporarily attached by a laying vehicle to the side brackets, but already laid under bias and immediately finally attached to the terminals of the side bracket. As a result, temporary fasteners on the side brackets are not required. Disadvantage of this method, however, is that in case of any necessary retightening of the contact wire after completion of laying all terminals of the side holder individually opened again and all side holder must be readjusted. This creates a considerable effort for reworking.

• – Der Leiter der Freileitung muss mit seiner gesamten Länge von mehreren hundert Metern bis mehreren Kilometern durch die Befestigungen an den Tragmasten gezogen werden. Dies erfordert präzise gefertigte Rollen mit einer sehr geringen Rollreibung, die für hohe Traglasten dimensioniert sind. Die verwendeten Rollen sind demzufolge teuer sowie aufwendig in ihrer Herstellung und Wartung.
• – Durch die unterschiedlichen Orte einer Trommel auf die das Vorseil aufgewickelt wird und der Trommel von der der Leiter der Freileitung abgewickelt wird ist ein erhöhter Aufwand von Personal sowie eine exakte Abstimmung der Auf- bzw. Abwickelgeschwindigkeit zwischen den beiden Trommeln erforderlich.

Out US 3,199,840 is a method for laying overhead lines of a high voltage line known in which the laying of overhead lines done by means of a pre-cable. Here are first attached to all poles of the overhead line rollers and passed over this the Vorseil. Then one or more conductors of the overhead line is attached to the cable and pulled through the rollers. The conductors of the overhead line are here wound on cable drums, which are located in front of the first support pole and are not moved during the entire installation process. Disadvantages of this method are:

• - The conductor of the overhead line must be pulled with its entire length of several hundred meters to several kilometers through the attachments to the support poles. This requires precisely manufactured rollers with a very low rolling friction, which are dimensioned for high load capacities. The roles used are therefore expensive and expensive in their production and maintenance.
• - Due to the different locations of a drum on which the Vorseil is wound and the drum is unwound from the head of the overhead line an increased effort of personnel and an exact vote of up or unwinding speed between the two drums is required.

It It is therefore an object of the invention to provide a simple device, which, with little effort, the contact wire when pulling and Clamping on the side bracket of a boom in tensile and guying direction movably fastened without him as well as other parts of the overhead line to damage and without compromising the safety of the workforce.

• – Durch das Abrollen des Fahrdrahtes auf mindestens einer Führungsrolle wird der Fahrdraht nicht beschädigt und somit schonend verlegt. Hierdurch erhöht sich die Liegedauer des Fahrdrahtes, verringern sich die Kosten für Instandhaltung und verlängern sich die Wartungsintervalle des Fahrdrahtes.
• – Durch die kontinuierlich rollende Bewegung des Fahrdrahtes auf mindestens einer Führungsrolle kann sich der Fahrdraht nicht in der Vorrichtung verklemmen, so dass die Seitenhalter immer von selbst in ihrer erforderlichen und endgültigen Lage positioniert bleiben. Ein Kontrollaufwand nach dem Ziehen und Abspannen des Fahrdrahtes, um die Seitenhalter wieder in ihrer erforderlichen Lage zu positionieren, ist nicht erforderlich.
• – Weiterhin wird durch die kontinuierliche Bewegung des Fahrdrahtes auf mindestens einer Führungsrolle ein definiertes Abspannen ermöglicht.
• – Durch eine höhenverstellbare Verriegelung der Bügelkonstruktion wird ein mögliches Herausfallen des Fahrdrahtes aus der Bügelkonstruktion sicher verhindert. Die Verriegelung ist zusätzlich drehbar um die Bügelkonstruktion angebracht, um ein Herausnehmen des Fahrdrahtes aus der Bügelkonstruktion zum Einspannen in die Seitenhalterklemme zu ermöglichen.
• – Durch die Bügelkonstruktion wird die Seitenhalterklemme nicht verdeckt, so dass ein einfaches Einlegen in die Seitenhalterklemme ermöglicht wird.

This object is achieved in connection with the preamble of the main claim according to the invention by the features specified in claim 1. Advantages of the invention over the prior art are:

• - By rolling the contact wire on at least one guide roller of the contact wire is not damaged and thus laid gently. This increases the service life of the contact wire, reduces the cost of maintenance and extend the service intervals of the contact wire.
• - Due to the continuous rolling movement of the contact wire on at least one guide roller, the contact wire can not jam in the device, so that the side holder always remain positioned by itself in its required and final position. A control effort after pulling and unclamping the contact wire to position the side holder in its required position is not required.
• - Furthermore, a defined clamping is made possible by the continuous movement of the contact wire on at least one guide roller.
• - By a height-adjustable locking the bracket construction a possible falling out of the contact wire from the bracket construction is reliably prevented. The lock is additionally rotatably mounted around the stirrup structure to allow removal of the trolley wire from the stirrup structure for clamping in the side holder clamp.
• - The bracket construction does not obstruct the side bracket clamp, allowing easy insertion into the side bracket clamp.

To Claim 2 is at least one of the guide rollers made of a softer Material manufactured as the material of the contact wire. Advantage is here an additional Protection of the contact wire, since during pulling and guying the material of the leadership and not the contact wire wears off.

claim 3 includes an advantageous embodiment for claim 2. As material for The contact wire is usually used copper because of its conductivity. The specified in claim 3 metal brass for at least one of the guide rollers is a softer material than copper and thus leads to the benefits of claim 2.

Claims 4 to 6 contain advantageous embodiments for the Form of a leadership role. In particular, by a recess in the direction of rotation at least one of the leadership roles and / or by a trained in hyperboloider or paraboloidal form leadership ensures that the contact wire is guided especially in the middle of the leadership role. Advantage of this embodiment is an improved leadership of the contact wire without contact the side parts of the stirrup construction.

claim 7 includes an advantageous embodiment of the bracket construction.

The invention will be described below with reference to the embodiments of 1 to 3 explained in more detail. The figures show in

1 a guide roller with the bracket construction and the height-adjustable lock in plan view,

2 the guide roller with the bracket construction and the height-adjustable lock in side view,

3 the guide roller with the bracket construction, which is attached to a bore at the top of the side holder.

• 1. Die Bügelkonstruktion (2) wird, wie in 3 dargestellt, mit einem Haken (6) der Bügelkonstruktion incl. Führungsrolle und Verriegelung in eine Bohrung (10) des Seitenhalters (8) eingehängt.
• 2. Daraufhin wird der Fahrdraht (3) in die Bügelkonstruktion (2) auf die Führungsrolle (1) gelegt und die Verriegelung (4) geschlossen.
• 3. Nachdem der Fahrdraht in alle relevanten Seitenhalter eingelegt worden ist, wird der Fahrdraht an seinen beiden Enden abgespannt.
• 4. Hat der Fahrdraht seine, von der Oberbauart abhängige Betriebszugkraft erreicht, wird die Verriegelung an der Bügelkonstruktion geöffnet, der Fahrdraht aus der Bügelkonstruktion gehoben und in die Seitenhalterklemme (9) eingeklemmt.
• 5. Die Bügelkonstruktion wird wieder aus dem Seitenhalter entfernt, die Montage des Fahrdrahtes ist abgeschlossen.

In 1 is the leading role ( 1 ) with the bracket construction ( 2 ), the height-adjustable lock ( 4 ) and the clamping device ( 5 ) in plan view as well as in 2 shown in side view. On the guide roller, freely rotatable about the axis ( 6 ), the contact wire ( 3 ) perpendicular to ( 1 ) or in the direction of ( 2 ) Drawing plane. The installation of the contact wire of the catenary using the in 1 illustrated device according to the invention is carried out as follows:

• 1. The bracket construction ( 2 ), as in 3 shown with a hook ( 6 ) of the bracket construction incl. Guide roller and locking in a hole ( 10 ) of the side holder ( 8th ).
• 2. Then the contact wire ( 3 ) in the bracket construction ( 2 ) on the leadership role ( 1 ) and the lock ( 4 ) closed.
• 3. After the contact wire has been inserted into all relevant side brackets, the contact wire is guyed at both ends.
• 4. If the trolley wire has reached its superstructure-dependent operational traction, the interlock on the stirrup construction is opened, the trolley wire is lifted out of the stirrup construction and into the side holder clamp ( 9 ) trapped.
• 5. The bracket construction is removed again from the side holder, the installation of the contact wire is completed.

1

leadership

2

Ironing construction

3

contact wire

4

lock

5

clamping device

6

axis of rotation for the leadership

7

hook

8th

Tailpiece

9

Tailpiece terminal

10

drilling

Claims (7)

Device for attaching a contact wire of a catenary to a side support of a cantilever of a catenary mast during pulling and unclamping of the contact wire ( 3 ), characterized in that the contact wire in the region of the tip of the side holder ( 8th ) - at least one in the drawing and guying direction rotatable guide roller ( 1 ), - the leadership role ( 1 ) by means of a stirrup construction ( 2 ) at the top of the side holder ( 8th ) - the one about leadership ( 1 ) running contact wire ( 3 ) by means of a lock ( 4 ), which are adjustable in height on the bracket construction ( 2 ) and with a clamping device ( 5 ) can be locked against a possible falling out is secured. Apparatus according to claim 1, characterized in that the at least one guide roller ( 1 ) is made of a softer material than the material of the contact wire. Apparatus according to claim 2, characterized in that the at least one guide roller ( 1 ) is made of brass. Device according to one or more of claims 1 to 3, characterized in that the at least one guide roller ( 1 ) is cylindrically shaped. Device according to one or more of claims 1 to 4, characterized in that the at least one guide roller ( 1 ) is cylindrically shaped and a recess in the direction of rotation of the guide roller ( 1 ) for guiding the contact wire ( 3 ) in the transverse direction of the guide roller ( 1 ) having. Device according to one or more of claims 1 to 5, characterized in that the guide roller ( 1 ) is formed in hyperboloid or paraboloid. Device according to one or more of claims 1 to 6, characterized in that the bracket construction ( 2 ) is made of round steel.