DE1029066B - Universal overhead line clamp - Google Patents

Description

GERMAN

Various types of cables are used in overhead line construction for tensioning, hanging up, connecting and branching off the lines Special clamps, depending on whether the cables are connected to column or chain insulators, to support or to be attached to anchoring points. Clamps that are only used to hang up the cable are again designed differently than terminals with which cable connections are made. at A distinction must be made between the latter, whether they are for cable connections with high tensile strength or for not under Line branches, connections and connections are determined. This variety of clamps, which are also procured for a certain cable cross-section and material must, causes a great burden in terms of storage.

With the invention, this drawback is countered by the different types of clamps in one Uniiversal overhead line clamp are combined.

In the drawing, the universal overhead line clamp is shown in Fig. 1 to 3 in front, side and top views. It consists of the two clamping jaws α and b, the intermediate piece c and the two clamping screws d, which pass through two holes in the intermediate piece. In the application example according to Fig. 1 to 3, a cable connection with high tensile strength is established with the clamp. For this purpose, notch or screw connectors or cone or tooth clamps have so far preferably been used.

The notch connectors, because they are one-piece, have the disadvantage that they are not connected to uncut lines can be connected, there are also lever pliers and trained assembly personnel for their assembly necessary. Screw connectors have the disadvantage that when they are used, the fitter gets an abundance of individual parts in hand and that for their assembly, in turn, in addition to special tools, Like anvil, mandrel and hammer, a trained staff is required as the leads are hammered in of the mandrel can easily be damaged.

Cone connectors are not to be used for uncut conductors. The use of tooth clamps is very costly as they do not have the tensile strength of connectors and therefore multiple terminals must be installed with double screws if the prescribed tensile strength (90%> the nominal load) should be achieved. The new universal overhead line clamp has the advantage that with let you establish all types of connection that are possible with the aforementioned terminal types, that no special tools, no special fitters are required for the assembly of this clamp are and that no damage to the lines can occur during the assembly of the terminal, because

Universal overhead line clamp

Applicant:

Emil Weckmar,

Electrotechnical factory,

Großschwabhausen (Thuringia)

Dr. Walter Weckmar, Großschwabhausen (Thuringia),

and Dipl.-Ing. Hermann Angele, Jena,

have been named as inventors

between its two clamping jaws α and b and the two lines e and f to be clamped to the latter, oval to circular intermediate piece c, which is oval to circular in cross section, replaces the rivet or screw of the connector by pulling together the clamping jaws α and b by means of the Clamping screws d press the lines in the shape of the adapter adapted conductor grooves of the clamping jaws. In this way, any line connection can be made quickly and easily with this handy and inexpensive terminal. In the worst case, the fitter only gets a clamping screw with a lock nut as an individual part.

If a final collar is to be made with the clamp for tensioning the lines on column insulators, the line g is threaded through the clamp, placed around the insulator head and fed back through the clamp. The clamping jaws only need to be loosened (see Fig. 4).

There is no need to procure special stirrup collars to attach the cables to support masts when the line is on both sides of the insulator using an accessory cord with two these clamps is attached. In the same way, the clamps can be used for safety stirrups and Double suspensions.

If the clamp is to be used to brace the lines on chain insulators, the intermediate piece c only needs to be replaced by a part of the bracing clip k as shown in Fig. 5. This arrangement has the advantage over the known clamps that the line rope h at all times

8ΟΪ508 / 247

can be re-tensioned and a second power clamp for establishing a connection to the power loop i is saved.

Finally, the new universal overhead line clamp can also be used as a suspension clamp or support clamp with a cable trough and eyelet clapper to attach a line to support points, as shown in Fig. 6, part of the eyelet clamp I and part of the rope trough m replace the intermediate piece c between the clamping jaws. The relevant cable trough part is then oval to circular arched at the bottom like the intermediate piece c. As with the known suspension or support clamps, the cable is inserted between the eyelet clapper and the cable trough. The low weight of such a clamp is particularly beneficial when it comes to vibrations and other line movements. Depending on the tightening of the clamping screws, a wide variety of requirements between completely loose and completely tight clamping of the cable can be taken into account.

Step z. B. high-frequency vibrations on a line on, the clamping screws are only tightened so far that the line is only in the Terminal is guided. Since the cable trough is mounted so that it can move easily approximately at the level of the line axis they follow the oscillation movements without appreciable resistance. This also has an effect here low weight of the vibrating clamp mass is particularly favorable.

Depending on whether copper or aluminum lines are laid, one made of copper or aluminum is made Intermediate pieces used. The clamp according to the invention has not only those already mentioned Advantages, but also helps to simplify warehousing, since in the future for the most diverse Fastenings and connections of the lines in overhead line construction only need one clamp

according to fig. 1 to 4 and as spare parts the tensioning clip k according to fig. 5 or the eyelet clip / and the cable trough m according to fig. 6 need to be procured.

Claims (3)

Patent claims: 1. Universal overhead line clamp for establishing a tensile connection of lines in the open air or for attaching lines to anchoring or support points, characterized in that between their two clamping jaws (ti and b) and between the two lines to be clamped (e and /) an intermediate piece (c) which is perpendicular to the latter and is oval to circular in cross-section is arranged, which presses the lines in the shape of the intermediate piece adapted line grooves of the clamping jaws when the clamping jaws are pulled together by means of the clamping screws (d). 2. A clamp according to claim 1 in the form of a tensioning clamp with tensioning clip on chain insulators, characterized in that a part of the tensioning clip (k) serves as an intermediate piece (Fig. 5). 3. Modification of the clamp according to claim 1 in the sense that it is designed as a hanging ¹ - or Tragkleirraie with rope trough and ösenklöppel and is used to attach only one conductor, characterized in that part of the ösenklöppels (I) and part of the rope trough (m) Replace the intermediate piece between the clamping jaws and that the conductor is inserted between the eyelet clapper and the cable trough (Fig. 6). Documents considered: German Patent No. 748 296. 1 sheet of drawings © 809 508/247 4.58