DE1074691B - Isolated overhead line house connection tensioning - Google Patents

Description

GERMAN

The invention relates to an isolated overhead line house connection voltage.

It is known to provide suspension or post insulators as well as commercially available end collar and connecting clamps for this purpose. So that the prescribed Protection against contact is guaranteed, the terminals must be covered with insulating tape during assembly or the like. Be wrapped. This action takes a considerable amount of time. Your effectiveness also depends on whether the necessary care is taken. In addition, such connections fall usually not very pleasant to the eye.

It is also known to use disk-shaped molded insulators with a nut thread on both sides. In one thread is the clamp body provided with an external thread for the overhead line, screwed into the coaxially opposite thread of the screw bolts of a suspension eye. The clamping body has a tension cone for the overhead line and a pressure cone for the house connection conductor on. A compressed material sleeve pushed over the clamping body serves as protection against accidental contact. This embodiment is made up of a fairly large number of relatively small ones and therefore light lost parts together, which affects the manufacturing costs and also the assembly time has an unfavorable effect. Another disadvantage is the large number of contact points. They increase the voltage drop and cause warming when exposed to greater loads. In addition, the manufacturing tolerances of the tensioning cone, the clamping body and the conductor dimensions impair the reliability of the clamping. Another objection is that the thread of the pressed material insulator, which is stressed to shear, is already there in the case of minor manufacturing inaccuracies, significantly restrict the break resistance.

The invention shows a solution which proves to be considerably simpler and more advantageous.

The design proposed here is characterized by the overhead line and the house connection conductor one behind the other receiving, pressed and / or notched and / or grooved metal sleeve with these conductors, on an outer bead provided on it in a central duct of an insulating body hangs or is attached to it, which encloses it along its entire length.

Are overhead lines and house connection cables made of different materials, e.g. B. aluminum and copper, you can make the entire sleeve from the material of one conductor and for the sleeve section, who has to accommodate the other conductor, provide a known Kupal sleeve, which is then pressed together or is also inherited or mutated.

However, it is simpler for production and for insulated overhead line house connection anchoring

Applicant:

Franz Wirschitz & Co.,
Munich 25, Kistlerhofstr. 124

Günther Lentze, Dortmund,

has been named as the inventor

The co-inventor has requested

not to be named

the assembly, the overhead line sleeve section in terms of material of the overhead line and the house connection conductor sleeve section material-wise to adapt the house connection conductor and both sleeve sections together to be pressed in a known manner in order to make the connection point corrosion-resistant. to it remains to be mentioned here that it is known to use a continuous copper pipe for the same purpose and to internally clad its portion intended for the aluminum conductor with aluminum. However, plating requires more labor and time than pressing. In addition, one turns out to be Plating is not always considered to be strong enough.

A connector with a conductive plug has also been proposed for heating devices, the one on the connection was te of the terminal from a hole facing this connection side tapered insulating sleeve protrudes and at its inner end part with a shoulder in a corresponding Extension of the bore is held. With such a plug, however, the inventive Failed to solve the task because a plug does not crimp or notch well with a conductor or can be riveted. Only one sleeve, i.e. a thin-walled connecting piece, is suitable for this purpose.

The compound of the invention can be with a produce suitable pressing, notching or grooving tools in a simple manner and in a very short time without errors, whereby good contact conditions with low contact resistance are created. aside from that the proposed bracing avoids dangerous shear and bending stresses. In the main only compressive stresses occur. The live parts cannot be touched Expenditure of additional funds withdrawn. on the other hand

909 728/384

the whole bracing consists only of a few individual parts that are also very easy to manufacture, which can be installed very quickly and effortlessly and which, apart from the connecting sleeve, have a conductor cross-section and are also independent of the conductor material. On the outside, the tension looks more pleasing than the known embodiments.

The drawing illustrates an embodiment in longitudinal section.

1 with the metal sleeve is designated. It has the longitudinal sections 1 α and 1 b . In section 1 α is the end of the overhead line 2, in section 1 b the end of the house connection conductor 3. The clear width of the sections is adapted to the associated conductor cross-sections. Both sleeve sections are pressed with their conductor 2 and 3 in the case shown. At the inner end of the section 1 α an outer bead 4 or a thickening of some other type is provided. The bead 4 can be worked with the sleeve 1 in one piece, for. B., as here, represent a covenant or be attached to it afterwards.

The sleeve 1 is arranged in the central duct 5 of the elongated insulating body 6, which is expediently designed as a rotating body and which can be made of porcelain, glass or plastic (molding compound). At its narrowest point on the overhead line side, the channel diameter corresponds to the diameter of the largest overhead conductor in question for the respective terminal size, including its insulation. If this conductor diameter is smaller, the gap is sealed by a tubular plug made of cork, rubber or the like. The metal sleeve 1 with its bead 4 sits loosely on the shoulder 7 provided in the channel 5. On the overhead line side, the channel 5 has a further step 8, which essentially takes into account the sleeve wall thickness. On the main connection conductor side, the lead-through channel 5 is expanded to form a space 9 in order to facilitate assembly. From this point the sleeve 1, after it has been connected to the overhead line 2 previously threaded through the insulating body 6 and to the house connection conductor 3 in the manner according to the invention, is drawn into the channel 5 until the bead 4 strikes the shoulder 7. To protect against contact, but also to secure the sleeve 1 in the insulating body, the space 9 is closed at the rear by means of the screw ring 10 through which the house connection conductor 3 runs out. A perforated cover or the like can fulfill the same purpose.

The insulating body 6 has a conical outer shape which tapers towards the overhead line. He's sitting here in the conical socket 11 which is articulated to the suspension part 13 by means of the arms 12. But it also exists the possibility of making the insulating body and its socket cylindrical and either on the insulating body to provide a stop collar for the socket or to carry out both parts with thread and they to screw together.

Under certain circumstances, especially if with the house connection conductor away from the tensioning immediately to go down or sideways, it can prove to be useful, the house connection conductor sleeve section to give an angled or a curved shape and in the rear section of the insulating body to provide a side slot leading into the room 9, through which the house connection conductor is led out. The rear closure part 10 is to be fully formed in this case.

Claims (8)

Patent claims: 1. Isolated overhead line house connection voltage, characterized by the overhead line (2) and the house connection conductor (3) one behind the other receiving, pressed and / or notched with these conductors and / or grooved metal sleeve (1) which is attached to an outer bead (4) provided on it in hangs or is attached to a central duct (5) of an insulating body (6), which encloses them along their entire length. 2. Bracing according to claim 1, characterized in that the outer bead (4), which is preferably located at the inner end of the overhead line sleeve section (la), on a shoulder (7) of the duct (5) of the insulating body (6) is seated. 3. Bracing according to claims 1 - and 2 for conductors of different material, characterized in that the overhead line sleeve section (la) is material-wise to the overhead line (2), the house connection conductor sleeve section (1 b) is material-wise adapted to the house connection conductor (3) and that the two sleeve sections together are pressed. 4. bracing according to claims 1 to 3, characterized in that the lead-through channel (5) of the insulating body (6) house connection conductor side, e.g. by means of a screw insert (10), a lid or the like. 5. bracing according to claims 1 to 4, characterized in that the house connection conductor (3) is led out through a central opening in the end piece (10). 6. Bracing according to claims 1 to 4, characterized in that the Hausanschlusslei terhülsenabschnitt (Ib) designed angular or arcuate and the house connection conductor (3) through a lateral slot of the insulating body (6) is felt out. 7. bracing according to one of claims 1 to 6, characterized in that the insulating body (6) sits in a socket (11) which is hingedly suspended. Considered publications:
German Patent Nos. 417 334, 239 431;
German Auslegeschrift No., 1057 258;
VDI magazine, 1953, no. 8, pp. 233-237, article by Hofmann and Rupe. 1 sheet of drawings © 909 72W84 1.60