RU154174U1 - DRUM FOR STORING A LINE OF OPTICAL CABLES AND FASTENING AN OPTICAL CLUT - Google Patents

Abstract

A drum for storing a cable of optical cables and attaching an optical coupling, comprising a lattice frame consisting of two lattice halves, each of which contains radial and longitudinal elements forming the shape of polygons, half of the coupling are connected in their central parts by a sleeve mounted on an axis, one end of which mounted on a frame having means for fastening the drum to a vertical support of the power line, on the other end of the axis is a means of connecting the axis with the drum, on the peripheral part of the drum its the halves are connected along the perimeter by transverse elements for winding a cable loop on them, while in the central part of the drum between its halves there is a bracket for mounting the coupling on it, characterized in that one half of the drum adjacent to the end of the sleeve fixed to the bracket has a flat shape and the other half of the drum in its peripheral part has L-shaped elements fixed on it, protruding towards the other end of the axis, while L-shaped elements form around the drum perimeter of the space to locate it in the cable adjacent to the sleeve.

Description

This technical solution relates to devices for spatial diversity of fiber-optic communication cables on power transmission poles using receiving drums for this purpose, which store the technological stock of cables and have connecting points for attaching fiber-optic couplings. It relates to the designs of trellised drums used for the specified purpose for convenient installation and further maintenance of branching dead-end fiber-optic couplings with a technological loop of an optical cable built into the lightning protection cable of power lines.

There is a method of laying a fiber optic cable (FOC) on a wire of a power line (transmission line) containing supports, which consists in the fact that the FOC is wound on two coils of the two ends of the cable, the FOC is wound on the wire using two winding machines moving along the wire in opposite directions , each of which contains a coil with wok wound on it. After the entire wok is wound from the coil, the end of the wok is connected to the end of the next wok, wound on the power transmission line, of the wok by means of a welded joint, which is placed in an airtight joint secured to the wire with clamps (RU 2205486 C1, 05.28.2003). The technical result of the method consists in simplifying, increasing the reliability and efficiency of laying the wok on the wire of an overhead power line, however, to implement the method, the proposed coils (drums) are essentially not adapted to the actual conditions of laying the wok.

A cable winding drum is known, comprising a sleeve on which U-shaped elements are fixed that form the lattice shell of the drum, while vertically oriented parts of the U-shaped elements form flanges along the perimeter of the drum located on the edges of the shell (SU 871269 A1, 10/07/1981 )

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 the sides facing one another, and the ends of each rail are fixed on the side surfaces of the protrusions of the cheeks (RU 2020677 C1, 09/30/1994). This drum is used for winding, storing and transporting the cable, while the drum is not suitable for attaching connecting and branching dead-end couplings used in the installation of fiber-optic communication cables that are mounted on the wires of overhead power lines or built into lightning protection cables of such lines.

A device for attaching an optical cable (OC) to a cable (ES) of an electric overhead line using a first connecting element (AE1) with a backup drum (VT) rotating around a first axis (DT) for an optical cable (OC) rotating around a first longitudinal axis (LA1) a backup coil (VS1) for the first connecting element (AE1), the first means (LE, RS9) for the parallel direction of the optical cable (OC) pulled from the backup drum (VT) relative to the longitudinal axis of the cable (ES), and the second means (FR , AR, NT, BG) for moving the backup drum (VT) and the first backup coil (VS1) in the direction of the longitudinal axis of the cable (ES) while maintaining the spatial orientation of the first axis (DT) and third means (RS, DH1) to hold and rotate the first backup coil (VS1) around the oriented parallel to the longitudinal axis of the cable (ES) of the second axis (LA3), and the rotation is such that the first connecting element (AE1) continuously encompasses a spiral block consisting of a cable (ES) and an optical cable (RU 98120449 A, 08.27.2000 )

Cable drums are known for winding cables and laying cables onto wires of power lines (GB 2180666 A, 04/01/1987).

A close technical solution to the one presented in this description is a drum for attaching couplings with a cable for an optical cable, which is a spatial frame with connecting places for fastening couplings ("Device for suspension of couplings and cable stock, Product catalog" Svyazstroydetal 2009 ", issue 1, Moscow, pp. 196-197).

Of the known closest to the drum presented in this description is a drum for fiber optic cables and fastening couplings with a loop of optical cable containing a lattice frame having means for connecting the couplings, and the drum is equipped with a bracket made in the form of a flat plate with a vertical axis fixed at the point of intersection longitudinal and transverse axes of symmetry of the plate, and vertical flanges located along its perimeter, the frame is made of connected rectilinear and curved elements forming polygonal bases, another 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 a vertical sleeve is fixed at the center of convergence of the radially linear elements in the holes of the horizontal plates, the inner diameter of the hole 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. To fix the drum on the insulators of the traverse of the overhead transmission line support, holes for a bolt with a hex nut and washer are made in the flat plate of the bracket. For fastening the drum on a round or on a polygonal or on a metal support of an overhead power line, the flat bracket plate is made (respectively) with shoulders for tape clamps located around the support shaft, or the flat bracket plate is made with corners in which studs are located, located in the through the holes of the support shaft, or the corners of the flat plate of the bracket are made in sizes corresponding to the dimensions of the waist angles of the support barrel (RU 2400897 C1, 09.27.2010, prototype).

The essential features of the prototype common with the drum presented in this description are the signs characterizing the drum for storing a cable of optical cables and attaching an optical coupling containing a lattice frame consisting of two lattice halves, each of which contains radial and longitudinal elements forming the shape of polygons , the halves are connected in their central parts by a sleeve mounted on an axis, one end of which is mounted on a frame having means for attaching the drum to the vertical support of the line e power transmission lines, on the other end of the axis there is a means of connecting the axis to the drum, and on the peripheral part of the drum its halves are connected by transverse elements located around the perimeter for winding a cable loop on them, while in the central part of the drum between its halves there is an arm for mounting the coupling on it.

A significant disadvantage of the known drum according to the patent RU 2400897 is that in order to service the optical coupling mounted on the drum for the purpose of making measurements or repair work requiring access inside the coupling, as well as to remove the coupling, it is necessary to wind the entire optical cable from the drum. All this leads to the complexity of installation and dismantling and increase their complexity.

The technical result of the drum presented in this description is to reduce the complexity of installation and dismantling work when servicing optical communication lines.

In FIG. 1 shows a drum in a perspective view.

In FIG. 2 - drum, front view.

In FIG. 3 is a view A in FIG. 2.

The drum (Fig. 1) contains a frame made of two interconnected trellised halves 1 and 2, interconnected in their central parts by a sleeve 3 with an axis 4 located in it, while on the periphery the halves 1 and 2 of the drum are connected evenly spaced the perimeter of the drum with transverse elements 5 (rods) designed for winding a cable loop on them. The transverse elements 5 are connected to the radial elements 6 (rods) extending to the outside from the transverse elements 5 so that their straight ends form straight flanges on one side of the drum. Each flange has a height h.

Each half of the drum is formed by interconnected radial elements 6 and longitudinal elements 7, forming in connection with each other a structure in the form of a closed symmetrical polygon. On the outside of the drum half 1 between the radial elements 6 of this half, a recess 8 is formed for the cable to pass, limited by a longitudinal rod 9, rigidly connected at its ends to the transverse rods 5. A clip 10 with a clamping bolt 11 is movably fixed to the longitudinal rod 9. on the drum branches 12 and 13 of a fiber optic cable wound on a drum.

The ends of one of the three radial elements 6 form one group located on one side of the recess 8. The ends of the other three radial elements 6, forming the second group located on the other side of the recess 8, have L-shaped elements located in the connection zone of the radial elements 6 with transverse elements 5. The first and second groups of radial rods are located on opposite sides of the longitudinal rod 9. One half 2 of the drum adjacent to the fixed end of the sleeve has a flat design. The second half 1 of the drum in its peripheral part has the aforementioned L-shaped elements 14 (FIG. 1) fixed to it, protruding towards the unfastened end of the axis.

The drum is mounted on an axis fixed on one side to the frame 15 with many holes 16 in the horizontal shelf of the frame. The frame 15 is essentially a means of attaching the drum to a vertical support of a power line. Holes 16 are intended for fastening the drum to the support of a power line (not shown). Inside the drum, in its central part, between its halves 1 and 2, there is an arm 17 with a platform 18 on which a coupling 19 is mounted to connect the optical fibers of the optical fiber cable. The drum is fixed on the axis by locking means for connecting the axis to the drum, which is two nuts 20 screwed onto the axis 4.

The space limited by the L-shaped elements 14 is intended for the location of the cable 21 adjacent to the sleeve 19 of the sleeve 21. Between the flange 7 (Fig. 1) and the bracket 15, an angular bracket 22 is attached to the radial and transverse elements 6 and 5, respectively. The corner bracket has an opening 23 for installation work.

The drum operates as follows. The drum is mounted on a power line support, which is used for laying an optical cable, while the drum is raised to the working position by an automobile mounting tower and with it, first a frame 15 with an axis 4 is mounted on the support, and then a drum is mounted on the axis, which is mounted on the axis with nuts 20. Next, the coupling 19 is mounted on the bracket 17, while the cable loop 21 hangs from the drum. The cable adjacent to the sleeve is laid in turns in L-shaped elements, as shown in FIG. 2, and secure the cable with the clamp 10. After that, rotate the drum and wind the cable loop onto the elements 5 (Fig. 3). Fix the drum locking device (not shown) on the frame 15 to prevent unwinding of the cable from the drum.

During operation of the optical communication line, if necessary, the coupling 19 is disconnected from the bracket 17, removed from the drum and at the same time remove the required number of turns from the L-shaped elements. The clutch is removed to the installation site for the length of the removed turns of the optical cable. Carry out the necessary installation work with the coupling, with the drum fixed to the support in its stationary position. After carrying out the work, the sleeve and cable turns are installed on the drum in its original working position.

Thus, when servicing an optical clutch and carrying out installation work that requires access to the inside of the clutch (for the purpose of measuring or repairing), the clutch is removed from the drum without laborious operations associated with unwinding the entire optical cable wound on the drum. This allowed to reduce the complexity of installation and dismantling work during operations and maintenance of optical communication lines.

Claims (1)

A drum for storing a cable of optical cables and attaching an optical coupling, comprising a lattice frame consisting of two lattice halves, each of which contains radial and longitudinal elements forming the shape of polygons, half of the coupling are connected in their central parts by a sleeve mounted on an axis, one end of which mounted on a frame having means for fastening the drum to a vertical support of the power line, on the other end of the axis is a means of connecting the axis with the drum, on the peripheral part of the drum its the halves are connected along the perimeter by transverse elements for winding a cable loop on them, while in the central part of the drum between its halves there is a bracket for mounting the coupling on it, characterized in that one half of the drum adjacent to the end of the sleeve fixed to the bracket has a flat shape and the other half of the drum in its peripheral part has L-shaped elements fixed on it, protruding towards the other end of the axis, while L-shaped elements form around the drum perimeter of the space to locate it in the cable adjacent to the sleeve.

Images