RU179512U1 - Device for attaching wires to the traverse - Google Patents

Abstract

The device for attaching wires to the traverse is designed to prevent the lashing of wires. The utility model relates to the field of electrical equipment, and specifically to pendant fittings and devices for attaching wires of an overhead power line to a traverse located on a transmission line support. The technical result of the utility model is to limit the movement of the earring, thereby reducing the likelihood of a possible overlap of the wires of the power lines and without reducing at the same time the efficiency of the operability of such a device.

Description

The device for attaching wires to the traverse is designed to prevent the lashing of wires.

The utility model relates to the field of electrical equipment, and specifically to pendant fittings and devices for attaching wires of an overhead power line to a traverse located on a transmission line support.

One of the standard schemes for attaching wires to the traverse is an earring-loop connection. It relates to linear couplers and is used to assemble insulator strings, securing them to the support of an overhead power line. This device for connecting wires to the traverse has its own drawback - an increased degree of freedom, which increases the likelihood of wires overlapping under weather conditions or man-made cases and leads to a short circuit.

A useful model is known (RF patent No. 133178), in which a standard scheme is used for attaching an earring fixed to the end of a string of insulators to a loop welded to a traverse. The standard hinge is made of round steel bar. The inner diameter of the earring worn on the loop allows you to freely move around the loop in all directions.

The utility model “Kit for the anchor support of an overhead power line” (RF patent No. 62136) has the same fastening scheme. A similar connection scheme of the earring and loop (element (20) in Fig. 3, element (27) in Fig. 4 to the description of the patent of the Russian Federation No. 62136) also allows the earring to move freely around the loop. The disadvantage of this type of connection is the excessive freedom of movement of the earring along the loop, which increases the likelihood of wires being whipped.

The technical result of the utility model is to limit the movement of the earring, thereby reducing the likelihood of a possible overlap of the wires of the power lines and without reducing at the same time the efficiency of the operability of such a device.

A device for attaching wires to a traverse containing a bearing segment of a steel corner with a fastening element in the form of an earring, characterized in that a groove is made on the edge of the corner, an earring with a rod threaded into it is placed in the groove, the bar is rigidly fixed flush with the corner edge, while the groove width is no more than one and a half thicknesses of the eye of the earring, the depth of the groove is not less than the sum of the diameter of the bar and the thickness of the eye of the earring, the diameter of the bar allows the earring to freely rotate around the axis of the bar and limits the movement of the earring in horizontal and vertical planes to the corner shelf.

In FIG. 1 and FIG. 2 shows examples of traverses with standard and proposed mounting methods, as well as a general view, a top view and a side view of the mounting devices. In the figures, the numbers indicate the loop (1), the earring (2) and the bar (3).

Utility Model Essence

The traverse includes a bearing segment of a steel corner with a groove in a horizontally positioned shelf. A piece of round bar threaded into the earring is superimposed on the inner shelf of the corner. The rod is fixed by welding on the inside of the corner shelf flush with the corner edge. The width of the groove is slightly larger than the thickness of the earring loop s <f, so as to limit the free movement of the earring along the bar. The depth of the groove is greater than the sum of the diameter of the bar and the thickness of the earring loop (d + s) <h. The length of the rod l exceeds the width of the groove f. The diameter of the rod allows the earring to rotate freely around the axis of the rod in the orthogonal plane to the shelf corner of the beam. At the same time, the rotation of the earring in the plane of the flange of the corner of the beam around the contact point of the ring of the earring and the bar is limited by the edge of the corner of the beam and does not exceed the value of α °, depending on the geometry of the components of the device. But in any case, the angle α ° for the proposed device is much smaller than with the standard connection of the earring and loop, at which it can be 90 °. For example, when the diameter of the bar is equal to 0.8 of the inner diameter of the eye of the earring, then the angle α ° is 36 °. At the same time, the smaller the difference between the diameter of the bar and the inner diameter of the eye, the smaller the amplitude of the movement of the earring around the bar in horizontal and vertical planes.

Thus, the application of this device achieves the claimed technical solution - limiting the movement of the earring and, as a result, reducing the likelihood of a lashing of wires of power lines.

Claims (1)

A device for attaching wires to a traverse, including a bearing segment of a steel corner with a fastening element in the form of an earring, characterized in that an additional groove is made on the corner edge, an earring with a bar threaded into it is placed in the groove, the bar is rigidly fixed flush with the corner edge, while the width the groove is not more than one and a half thicknesses of the eye of the earring, the depth of the groove is not less than the sum of the diameter of the bar and the thickness of the eye of the earring, the diameter of the bar allows the earring to freely rotate around the axis of the bar and limits the movement of the earring in th izontalnyh and vertical planes to the corner of the shelf.

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