DE1053058B - Suspension device for multiple, especially triple guy, isolator chains - Google Patents

Description

A suspension device is known for multiple, in particular triple, tension insulator chains, which consists of elbows and brackets connected to one another via hinge pins and at which, if one of the isolator chains breaks, the undamaged isolator chains are evenly loaded, shock-absorbing devices are provided, which are used in the transition from normal suspension to the suspension that occurs when an outer insulator chain breaks. With this well-known The shock-absorbing device consists of a tube, an angle iron Od. The like. That is stressed on bending or buckling when any isolator chain breaks, the Bending or kinking in the transition from one load case to another is the cause of shock absorption is. Since the bend also occurs if the middle isolator chain breaks, it becomes the shock-absorbing one If the central insulator chain breaks, the link is deformed in such a way that it is replaced by a new one must become.

The invention avoids this disadvantage in that the buckling rod, which the shock-absorbing device forms, on the hinge pins that establish the connection between the angle piece and brackets, is pivotally mounted so that it is only subjected to train when a central isolator chain breaks will. The formation according to the invention also has the advantage of being very simple and analogous connection of the buckling rod with the angle pieces achieved as the connection used hinge pins are available anyway. Finally, the training according to the invention offers the further advantage that the buckling rod will only open if one of the outer insulator chains breaks Pressure in the direction of its axis is stressed (buckling case I, according to Euler), while it is known in the case of the known Arrangement in the sense of the buckling case IV (after Euler), is claimed, since its two Ends are clamped. This means that the rod in the arrangement according to the invention in the event of a break of the outer insulator chains after the beginning of the buckling of the further movement of the suspension links only still very little resistance opposed, so that the two remaining insulator chains after the end of the Deformation of the rod can actually be loaded almost exactly to the same extent.

The drawing shows three embodiments of the invention, namely shows

Fig. 1 shows an arrangement according to the invention in view,

2 shows the associated side view,
3 shows a schematic representation of the arrangement according to the invention for the purpose of explaining the suspension device for multiple, in particular triple, tension insulator chains

Applicant:

Bavarian screw and spring factory Richard Bergner,

Schwabach near Nuremberg

Dipl.-Ing. Theodor Wahl, Düsseldorf-Oberkassel,
χ 5 has been named as the inventor

Load distribution prior to the destruction of an isolator chain,

Fig. 4 is a schematic representation of the arrangement according to the invention after breaking an outer Isolator chain,

Fig. 5 is a schematic representation of ^a 5 Anord voltage according to the invention by rupture of the middle insulator string,

6 shows a further exemplary embodiment of the invention in view,

7 shows the associated side view,
Fig. 8 shows a third embodiment according to the invention and

9 shows the associated side view.

The arrangement according to FIGS. 1 and 2 uses two angle pieces 1 and 2 which are articulated to one another by a bolt 4. The bolt 4 is inserted through holes 3 of the angle pieces 1 and 2. The middle, not shown, isolator chain engages the bolt 4. Furthermore, holes 6 are provided at the ends of the angle pieces 1 and 2 , through which bolts 5 are inserted, on which the two lateral isolator chains engage. The angle pieces 1 and 2 also have holes 8 at their lower corners through which bolts are inserted. These bolts hold the tabs 9 and 9 a, which are connected to each other at their lower end by a bolt 11 , which is also guided in holes 10 of the tab 9 and 9 a. The electrical conductor or the conductor bundle is suspended from the bolt 11. According to the invention, the two bolts 7 are now connected to one another by a rod 12 which rests on the bolt 7 with the aid of elongated holes 13 . The above-mentioned elongated holes allow the suspension arrangement a mutual mobility of all parts, as far as such for an even load distribution.

809 770/359

Claims (4)

treatment is normally required even with insulator chains of different lengths. Fig. 3 explains the load distribution in the normal case. The conductor load which acts on the two tabs 9 and 9 α via the bolt 11 is denoted by P. The two elbows 1 and 2 take over the load from the straps 9 and 9 a and transfer it to the bolts 4 and 5. Each of the bolts has to carry a third of the load P, as the pull of the straps 9 and 9 a in the direction the dash-dotted lines 9 & continues and the dimensions of the arrangement are made so that the sections a and b have an order of magnitude which causes an even distribution of the load P on the three bolts 4 and 5. Thus, in normal cases, all insulator chains are evenly loaded with a third of the conductor load. If, for example, the left outer insulator chain breaks, the load / 5 must be borne by the middle and the right outer insulator chain alone. If these two chains of isolators are to take on the same loads, the load must lie vertically below them. This case is shown in FIG. The rod 12 is subjected to buckling stress when the left outer insulator chain breaks. Its resistance is initially high, so that it absorbs the first shock that occurs when the left chain of insulators ruptures. Here he kinks; after the beginning of the kinking, its resistance becomes lower, so that it only offers a slight resistance to the movement of the conductor cable (point 11) into the position shown in FIG. The point 11 can actually almost or completely reach the desired position according to FIG. 4, since the rod 12, after it has been bent once, only offers very little resistance to the displacement of the rope or the point 11. If it is not one of the outer insulator chains but the middle one that breaks, the case shown schematically in FIG. 5 occurs. The two outer chains of insulators then each take on half of the conductor load. After a short movement permitted through the elongated holes, the rod 12 is subjected to tensile stress and holds the arrangement in the position shown in FIG. If one of the outer isolator chains breaks, then, as tests have shown, the part of the isolator chain that remains hanging on the elbow is initially pivoted violently outwards, since the point where it is attached (bolt 5) performs a circular movement around bolt 4. It is often thrown around so violently to the outside (cf. arrow 13 in FIG. 6) that in the further course of its movement it strikes another isolator chain and damages or even destroys it. In order to eliminate this disadvantageous possibility, according to a further embodiment of the invention, as shown in FIGS. The connection is made by bolts 17 and 18 around which the rod 15 can rotate. The bolts 4, 5, 17 and 18 thus form the articulation points of a joint parallelogram, which consists of the parts 2, 16, 15, 14. If the right outer insulator chain breaks, the bolt 5 describes an arc around the bolt 4. However, the end 14 does not pivot outwards in the direction of the arrow 13, since it is guided by the rod 15 parallel to itself. The dreaded whipping of the end of the broken insulator when using longitudinal stabilizers does not take place. An identical rod 15 & serves to guide the end of the left isolator chain. In the embodiment according to FIGS. 8 and 9, the same is achieved as in the embodiment according to FIGS. 6 and 7. However, here the end of the right-hand isolator chain is extended downwards beyond the bolt 5. At this extension 14 a engages a rod 15 a, which is also articulated to a corresponding extension 16 a of the central isolator chain 16 b. This embodiment has the advantages that the rods 15 a are not located outside of the suspension device and are guided through the two cheeks 2a and 2b of the angle piece 2, whereby they can also be secured against buckling, among other things. Claims. 1. Suspension device for multiple, in particular triple, tensioning isolator chains, which consists of angle pieces and brackets connected to one another via hinge pins and in which the undamaged isolator chains are evenly loaded if one of the isolator chains breaks, with shock-absorbing devices being provided that are used when the normal suspension is switched to the suspension occurring when an outer insulator chain breaks, characterized in that the buckling rod (12), which forms the shock-absorbing device, is attached to the hinge pin (7) which forms the connection between the angle piece (1, 2) and the tabs (9 , 9 a) produce, is pivotally mounted so that it is only subjected to train when a central isolator chain breaks. 2. Suspension device according to claim 1, characterized in that when using Long rod insulators the end (14) of the outer insulator chains that engages the elbow (2) by a joint parallelogram (2, 16, 15, 14) od. The like. Is guided so that it is by breaking tripped one of the outer isolator chains. Movement remains parallel to itself. 3. Suspension device according to claim 2, characterized in that the end (14) of each isolator chain is provided with a rigid extension (14 a, 16 a) protruding downwards via its pivot point (5) on the angle piece (2) and that the rod (15, Fig. 7) of the joint parallelogram is hinged to the extension (14 a). 4. Suspension device according to claim 3, characterized in that the rod (15 a, Fig. 8) on the angle piece (2) is preferably guided between two sheets forming the angle piece (2a, 2b). Considered publications: German patent application L 9271 VIII d / 21 c (published on July 24, 1952); German patent specification No. 859 642. 1 sheet of drawings ® 809 770/359 3.59