RU2400897C1 - Drum for fixation of couplings with loop circuit of optical cable - Google Patents

Abstract

FIELD: instrument making.

SUBSTANCE: invention relates to power engineering and may be used as drums for fixation of couplings with process loop circuit of optical cable. Drum represents a rigid frame assembled from elements (9, 10, 11) (round rods, section bars or strips) with bracket and connection points (2) for fixation of couplings (1). Bracket is arranged in the form of plate (3) with flanges (8) and vertical axis (4) welded into its centre, drum is put onto vertical axis (4) and is therefore fixed on bracket. Fixation of drum on round concrete support of overhead power transmission line is done by means of belt yokes fixed in shoulders of plate (3), and drum fixation on polyhedral concrete support (25) is done by means of angles in flat plate of bracket, where pins passing through support shaft are fixed.

EFFECT: drum for fixation of couplings with process loop circuit of optical cable differs by simplicity of design and installation, reliably protects coupling in process of operation, is characterised by low costs in production process and is manufactured serially and supplied on lines.

9 cl, 7 dwg

Description

The invention relates to the field of electric power industry, in particular to drums intended for fastening connecting and branching dead-end couplings with a technological loop when mounting an optical cable integrated in a lightning protection cable used simultaneously for melting ice on overhead power transmission lines.

Known cable drum containing a cylindrical neck, cheeks on the ends of the neck and the packing rails located between the cheeks, along the neck and fixed over a wound cable; the cheeks are made with equally spaced radial protrusions on one side facing one another, and the ends of each rail are fixed on the side surfaces of the protrusions of the cheeks [1].

However, this cable drum is used only for packaging, storage and transportation of cable; a drum of this design is not suitable for attaching connecting and branching dead-end couplings used during installation, for example, fiber-optic cables that are mounted on the wires of overhead power lines or are built into lightning protection cables of the same lines.

The closest technical solution in relation to the proposed one is a drum for mounting couplings with a cable for an optical cable, which is a spatial structure in the form of a rigid frame with connecting places for mounting couplings [2].

This known technical solution has the following disadvantages:

- insufficient dimensions, not allowing to provide an optimal supply of a technological cable for an optical cable during installation;

- the lack of a protective device for the coupling, which in turn does not protect the coupling installed in it from cases of vandalism;

- insufficient reliability of securing the coupling in the drum (only tape or wire clamps directly to the cable bay);

- a rather complicated technology for mounting the device and winding the cable onto a drum, which is carried out at a height (on a support);

- The drum mount is provided exclusively for round concrete supports, that is, the versatility of the drum leaves much to be desired.

The applicant set himself the practical task of developing and introducing a drum into electric power systems for fastening connecting and branching dead-end couplings with a technological loop when installing an optical cable, which would be distinguished by its simplicity of design, convenience and ease of installation on the line, reliability and safety during operation; This positive practical result was achieved due to a new set of essential structural features of the proposed technical solution set forth in the following claims: “a drum for mounting couplings with a cable for an optical cable, which is a spatial structure in the form of a rigid frame with connecting places for mounting couplings, it is equipped with an arm made in the form of a flat plate with a vertical axis fixed at the intersection of the longitudinal and transverse axis symmetry of the plate, and vertical flanges located along its perimeter, the rigid frame consists of a set of rectilinear and curved elements, some of which are fastened to each other in the horizontal plane, forming at least two along the perimeter: the upper and lower polygonal bases, the other part these elements are fixed at the vertices of the above polygonal bases, located vertically between them, as well as radii, dividing the base into separate sectors, while in the center of convergence located along a vertical sleeve is fixed to the radii of the rectilinear elements in the holes of the horizontal plates, the inner diameter of the hole of which corresponds to the diameter of the vertical axis of the bracket; the bracket is made of steel sheet, and the vertical axis is fixed to the steel sheet by welding; when the drum is mounted on insulators, the crossheads of the overhead power line support in the flat bracket plate, holes for the bolt with a hex nut and washer are made; when attaching the drum to a round concrete support of an overhead power transmission line, the flat plate of the bracket is made with at least two shoulders for tape clamps located around the support shaft and in said shoulders; when attaching the drum to a polygonal concrete support of an overhead power transmission line, the flat plate of the bracket is made with corners in which studs are mounted that pass through the barrel of the support; when attaching the drum to a metal support of an overhead power line, the corners of the flat plate of the bracket are made in accordance with the sizes corresponding to the waist angles of the barrel of the support, while the bracket is fixed to the support by means of threaded hooks with nuts and washers; rectilinear and curved elements that make up the rigid frame are made of steel round rods; rectilinear and curved elements that make up the rigid frame are made of steel strips; the rectilinear and curved elements that make up the rigid frame are made of metal profiles. ”

The invention is illustrated by drawings, where figure 1 shows a drum for mounting couplings with a cable for an optical cable, made according to the present invention, top view; figure 2 is a view along arrows AA in figure 1; figure 3 - mounting the drum in figure 1, on the insulators of the traverse of the support of the overhead power line; figure 4 - the attachment of the bracket of the drum in figure 1 on a round concrete support; figure 5 - node mounting the bracket of the drum in figure 1 on a polygonal concrete support; figure 6 - node mounting the bracket of the drum in figure 1 on a metal support; Fig.7 is a view along arrow B in Fig.6.

The proposed drum for mounting couplings 1 with a technological cable for the optical cable consists of the drum itself, the drum bracket, the elements for attaching the drum to the bracket and connecting points 2 for mounting the couplings 1. The bracket is made in the form of a flat plate 3, has a vertical axis 4, which is welded into the center of the plate 3, namely, to the point 5 of intersection of the longitudinal and transverse axes of symmetry 6, 7 of the plate 3, and the vertical flanges 8 located along the perimeter of the plate 3. The drum itself is a space a wall structure (rigid frame) welded from a set of straight and curved elements, which can be steel round rods, profiles and / or strips. The elements 9 of the rigid frame of the drum are fastened to each other in a horizontal plane so that the upper and lower polygonal bases are formed around the perimeter, the elements 10 are arranged vertically between the elements 9, and the elements 11 are located along the radii from the vertices 12 of the polygonal bases to the center 13, in which in the holes 14 of the horizontal plates 15, a vertical sleeve 16 is fixed, mounted on the vertical axis 4 of the bracket.

The design of the drum is universal in the sense that the drum can be successfully mounted both on the insulators of the traverse of the overhead transmission line support, and directly on the supports of various types of lines. When attaching the drum to the insulators 17 (Fig. 3), the traverse 18 of the line support in the flat plate 3 of the bracket has holes 19 under the bolt 20 with a hex nut 21 and a washer.

In the case of mounting the drum on a round concrete support 22 (Fig. 4) of an overhead power line, the flat plate 3 of the drum bracket is provided at its ends with two shoulders 23 for tape clamps 24, which cover the barrel of the support 22 and are fixed in the shoulders 23.

The drum is mounted on a polygonal concrete support 25 (Fig. 5) of an overhead power transmission line by means of angles 26 in the flat plate 3 of the bracket, in which the studs 27 are passed through the barrel of the support 25.

If the power line is mounted on metal supports 28 (6, 7), then the corners 29 of the flat plate 3 of the drum bracket are made of the same dimensions as the dimensions of the waist angles of the barrel of the support 28, and the bracket is fixed by means of threaded hooks 30 with nuts 31.

The invention works as follows:

The assembly and installation of the drum is entirely carried out on the ground. Before mounting the drum on the line, check its completeness (bracket, fastening elements of the drum to the bracket, fastening elements of the corresponding coupling to the drum, base and casing of the coupling with their fasteners, packaging, passport) and the absence of damage, while using various methods of fastening to any types The support bracket with the drum mounted on it should not have displacements and backlash under normal load. After attaching the optical cables to the inputs of the coupling 1, before welding the fibers of the optical cables, the coupling 1 is fixed on the drum at the connecting points 2 using the standard fasteners provided in the coupling kit 1. Then the optical cables are fixed on the base 32 of the coupling 1, the optical fibers are welded and mounted according to mounting instructions for the coupling 1, after which two windings of the cable are wound onto the drum and pre-securing the turns of the optical cable. Carry out the installation of the drum on the bracket, for which they put a washer on the axis 4 of the bracket, install the drum on the axis of the 4 brackets, slightly twist it with nuts and raise it to the support. At the final stage, a free loop of the optical cable is wound onto the drum, evenly laying the cable turns on the drum and pulling them during installation, if necessary, still covering the drum with nuts on the axis 4 of the bracket. After winding the loop, the drum is fixed on the axis 4 of the bracket by pre-tightening the nuts, while the coupling 1 should be in a vertical position with the cable leads downward with a deviation from the vertical of not more than 15 °. Finally tighten and lock the nuts for fastening the drum on the axis 4 and check the reliability of the fastening of the drum (it should not have movements and backlashes on all planes). And, finally, the free part of the optical cable loop is fixed to the support according to the working draft, using clamps.

The inventive drum for mounting couplings with a technological cable for an optical cable is a universal device and in its functional purpose is suitable for use on any type of support of overhead power lines (from concrete to metal); the drum is convenient and easy to mount, performing almost all mounting operations on the ground; structurally, the drum is made of standard parts that are always available in industrial circulation, does not require large material and financial costs during the manufacturing process, and is reliable in long-term operation. Currently, the drum is in mass production and is supplied to overhead power lines and communication lines.

Information sources

[1] Description of the invention to the Cable Drum patent No. 2020677, H02G 1/00, filed on June 24, 1991, published September 30, 1994, Bulletin No. 18.

[2] Product catalog “Svyazstroydetal 2009”, (Issue 1), Moscow “Device for suspension of couplings and cable stock (UPMK)”, pp. 169-197 (a copy of this closest analogue is attached).

Claims (9)

1. A drum for mounting couplings with a cable for an optical cable, which is a spatial structure in the form of a rigid frame with connecting places for mounting couplings, characterized in that it is equipped with a bracket made in the form of a flat plate with a vertical axis fixed at the intersection of the longitudinal and transverse axes of symmetry of the plate, and vertical flanges located along its perimeter, the rigid frame consists of a set of rectilinear and curved elements, some of which are bonded to each other in the horizontal plane, forming along the perimeter at least two, upper and lower, polygonal bases, the other part of the mentioned elements is fixed at the vertices of the above polygonal bases, located vertically between them, as well as radii, dividing the bases into separate sectors, while in the center of convergence of the rectilinear elements located along the radii in the holes of the horizontal plates, a vertical sleeve is fixed, the inner diameter of the hole of which corresponds to the diameter of the vertical axis of the bracket but. 2. The drum according to claim 1, characterized in that the bracket is made of steel sheet, and the vertical axis is fixed to the steel sheet by welding. 3. The drum according to claim 1, characterized in that when attaching the drum to the insulators, the crossheads of the overhead power line support in the flat plate of the bracket, holes are made for the bolt with a hex nut and washer. 4. The drum according to claim 1, characterized in that when attaching the drum to a round concrete support of an overhead power line, the flat plate of the bracket is made with at least two shoulders for tape clamps located around the barrel of the support and in said shoulders. 5. The drum according to claim 1, characterized in that when attaching the drum to a polygonal concrete support of an overhead power line, the flat plate of the bracket is made with angles in which studs are passed through the shaft of the support. 6. The drum according to claim 1, characterized in that when mounting the drum on a metal support of an overhead power line, the corners of the flat plate of the bracket are made in size corresponding to the dimensions of the waist angles of the barrel of the support, while the bracket is fixed to the support by means of threaded hooks with nuts and washers. 7. The drum according to claim 1, characterized in that the rectilinear and curved elements that make up the rigid frame are made of steel round rods. 8. The drum according to claim 1, characterized in that the rectilinear and curved elements that make up the rigid frame are made of steel strips. 9. The drum according to claim 1, characterized in that the rectilinear and curved elements that make up the rigid frame are made of metal profiles.

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