DE591592C

DE591592C - Suspension device for electrical overhead lines and aerial cables

Info

Publication number: DE591592C
Application number: DEW86650D
Authority: DE
Original assignee: Individual
Current assignee: Individual
Priority date: 1931-08-06
Filing date: 1931-08-06
Publication date: 1934-01-24

Description

AUSGEGEBEN AM
24. JANUAR 1934ISSUED ON
JANUARY 24, 1934

JVr 591592 KLASSE 21 c GRUPPE JVr 591592 CLASS 21c GROUP

Bei Freileitungen und Luftkabeln, insbesondere solchen aus Aluminium oder «<v sprechenden Legierungen, machen müdungserscheinungen und Verwindu allem dort geltend, wo die Leitung ^ * χ ^gaufhängungen verankert ist. Die Folge davon ist, daß nach verhältnismäßig kurzer Zeit ■ Leitungsbrüche eintreten. Soweit eine Erklärung für diese Erscheinungen bis jetzt gefunden ist, sind sie auf die Schwingungen der Leitung und vor allem auf die Sonderschwingungen und ungünstigen Schwingungshemmungen der bisherigen Aufhänge- und Klemmvorrichtungen zurückzuführen. Es zeigt sich, 'daß die Leitung bei der bisherigen Anordnung der Abspannklemmen an den Tragkörpern stark auf Biegung beansprucht wird, und zwar am Ein- bzw. Austritt der Leitung in bzw. iaus der Abspannklemme. Es ist für die Vermeidung der schädlichen Schwingungen von wesentlicher Bedeutung, wie die Leitung selbst und ihre Abspannklemmen in der Aufhängung beweglich sind. Eine weitgehende günstige Bewegungsmöglichkeit dieser Teile ist gemäß der Erfindung dadurch erreicht, daß die Aufhängevorrichtung aus zwei im Winkel zueinander stellenden, gegenseitig durch ein regelbares Spannglied in ihrer Winkelstellung verstellbaren Tragarmen besteht, an deren freien Enden Abspannklemmen derart angelenkt sind, daß der Schnittpunkt von Gelenkachse und Leiterachse in einer der Endebenen der Abspannklemme liegt. Das Ergebnis ist ein ständig schlaffes Leiterstück zwischen den Abspannklemmen und xen Schwingungsmöglichkeit in einer ihrer •-debenen, was sich günstig auf die Erhal-For overhead lines and overhead cables, especially those made of aluminum or "<v speaking alloys müdungserscheinungen make and Verwindu all there claims where the line ^ χ ^ gaufhängungen is anchored *. The consequence of this is that line breaks occur after a relatively short time. As far as an explanation for these phenomena has been found so far, they can be traced back to the vibrations of the line and above all to the special vibrations and unfavorable vibration inhibitions of the previous suspension and clamping devices. It can be seen that with the previous arrangement of the anchoring clamps on the support bodies, the line is subjected to great bending stress, namely at the entry and exit of the line into and out of the anchoring clamp. In order to avoid damaging vibrations, it is essential how the line itself and its tensioning clamps can move in the suspension. A largely favorable possibility of movement of these parts is achieved according to the invention in that the suspension device consists of two mutually angularly positioned support arms which are mutually adjustable in their angular position by a controllable clamping member, at the free ends of which tensioning clamps are articulated in such a way that the intersection of the joint axis and Head axis lies in one of the end planes of the suspension clamp. The result is a constantly slack conductor section between the tensioning clamps and xen oscillation possibility in one of their • -developes, which has a favorable effect on the maintenance

^yg der Leitung auswirkt. Ähnliche Aufhängevorrichtungen mit zwei im Winkel zueinander stehenden, durch ein Spannglied in ihrer Winkelstellung beeinflußbaren Tragarmen zeigen diese Vorteile deshalb nicht, weil sie nicht auf der Vereinigung der regelbaren Verstellbarkeit der Tragarme und der besonderen Anlenkung der Abspannklemmen an die Tragarme, derart, daß die Gelenkachse in einer der Endebenen der Abspannklemme liegt, beruhen. ^y g affects the line. Similar suspension devices with two support arms that are at an angle to each other and can be influenced in their angular position by a tension member do not show these advantages because they are not based on the combination of the adjustable adjustability of the support arms and the special articulation of the tensioning clamps on the support arms, in such a way that the hinge axis in one of the end planes of the suspension clamp is based.

In der Zeichnung sind beispielsweise Aus- ^! führungsformen des· Erfindungsgegenständes wiedergegeben.In the drawing, for example, are ^! forms of management of the subject matter of the invention reproduced.

Fig. ι zeigt eine Freileitungsaufhängevorrichtung, von der Seite gesehen, wobei eine der Abspannklemmen im Schnitt dargestellt ist.Fig. Ι shows an overhead line suspension device, seen from the side, with one of the anchor clamps shown in section is.

Fig. 2 zeigt eine andere Anhängeart der Abspannklemme an dem Tragkörper.Fig. 2 shows another type of attachment of the tensioning clamp to the support body.

Fig. 3 zeigt die Aufhängevorrichtung nach Fig. ι in Richtung der Leiterachse gesehen.Fig. 3 shows the suspension device according to Fig. Ι seen in the direction of the conductor axis.

Die Aufhängevorrichtung nach Fig. 1 und 3 besteht aus einem Tragkopf 1, der an seinem oberen Ende beispielsweise als Klöppelpfanne 2 zum Anhängen an die Isolatorenkette ausgebildet ist. Das untere Ende des Kopfes 1 ist gegabelt und trägt hier mit dem Bolzen 3 zwei Tragarme 4 und 5, die durch ein regelbares Spannglied 18 verbunden und an ihrem unteren Ende 6 ebenfalls gegabelt sind, umThe suspension device according to FIGS. 1 and 3 consists of a support head 1, which at its upper end, for example, as a clapper pan 2 is designed to be attached to the isolator chain. The bottom of the head 1 is forked and carries here with the bolt 3 two support arms 4 and 5, which are controlled by a Tensioning member 18 connected and also bifurcated at its lower end 6 to

Claims

to include a suspension clamp for line 7 here. In the example, these anchoring clamps, which can be of any type, each consist of a conical clamp with an expediently divided clamp housing 8, the halves of which are united by screw bolts 10 engaging flanges 9. The mutual union of these two halves could also be done with the help of a dovetail. Groove connection, the parts of which can be pushed into one another, take place. In the terminal housing S sits a split clamping sleeve 11 with clamping wedges 12, which press the line 7 into it and are secured in their position by a screw plug 13. The cone clamp is so articulated in the 'forks 6 of the support arms 4, 5 that the hinge axis intersects the conductor axis, namely perpendicular. In the example of FIG. 1, this hinge axis lies in the plane of entry of the line 7 into the clamp which is perpendicular to the conductor axis at the pointed end of the conical clamp. For this purpose, in this example, the split terminal housing 8 of the conical clamp is equipped with connecting tabs 14 which extend beyond the conical clamp and encompass the fork ends 6 of the support arms 4, 5. Bolts 15, whose axes falling in one direction lie in the aforementioned plane of entry of the line into the clamp, are used for the articulated connection of the conical clamp and the support arms 4, 5. In the embodiment of FIG. 2, the clamp housing 8 of the clamp is U-shaped Brackets 16 equipped, but which protrude beyond the wide end of the conical clamp and serve to connect to the fork 6 of the support arms 4, 5. The axes of the hinge pins 17 lie in the plane of exit of the line from the terminal, which is perpendicular to the conductor axis, and intersect the conductor axis. The tension clamps can swing in the forks 6 of the support arms 4, 5 in both embodiments. The conductor section 7 'lying between the tensioning clamps, be it an inserted special section or a part of the uncut line, is held slack, i.e. without tension. For this purpose, if there are mutually pivotable support arms 4, 5, as described, a turnbuckle 18 or some other stiffening and tensioning device that enables the arms 4, 5 to be adjusted accordingly is suitable. The support arms 4, 5 are rigidly connected by the turnbuckle 18. The suspension therefore only vibrates in the joints of the 'anchor clamps and in that of the support head 1. Harmful relative vibrations between the anchor clamps and the line are avoided, so that the unfavorable twisting and bending stresses observed so far do not occur. The slack intermediate conductor piece 7 'does not hinder the vibrations of the tensioning clamps. The turnbuckle 18 can, as shown, be arranged over the slack line piece 7 'or under .dem same. P Λ T Ii N T ANSI 'R Ü C Ii Ii:.

1. Suspension device for electrical Overhead lines and aerial cables, characterized by two at an angle to each other, mutually adjustable by one Tensioning member (18) support arms which can be influenced in their angular position. (4, 5), at their free ends of tension clamps (8) are articulated in such a way that the intersection of the hinge axis and the conductor axis is in one of the End planes of the suspension clamp (8).

2. Suspension device according to claim 1, characterized in that the axis of the joint between the tensioning clamp (8) and the support body (6) with the conductor axis in the plane of entry of the conductor (7) into the Suspension clamp (8) cuts.

3. Suspension device according to claim 1, characterized in that the axis of the joint between the tension clamp (8) and the support body (6) with the conductor axis cuts in the exit plane of the line (7) at the tensioning clamp (8).

4. Suspension device according to claim 1 to 3, characterized in that the Anchoring clamps (8) with connecting tabs (14) for the forked. Beam ends (6) are provided.

5. Suspension device according to claim 1 to 4, characterized in that, the Anchoring clamps (8) with via the Einzw. Exit level of the line reaching beyond U-shaped brackets (16) are equipped, which are to be connected Include support arm ends (6).

1 sheet of drawings