RU163555U1 - FIBER OPTICAL CABLE SUSPENSION ASSEMBLY ON THE SUPPORT OF THE CONTACT NETWORK OF RAILWAY SITES - Google Patents

Abstract

1. The suspension unit of the fiber optic cable on the supports of the contact network of railway sections, containing a bracket for mounting on the supports of the contact network with suspension elements and a support clip, mounted on the suspension elements of the bracket, characterized in that it contains a bracket with suspension elements made in the form earrings, and a corner for fixing on the metal supports of the contact network, interconnected by two threaded rods in the form of pins, with nuts and washers, while one of the washers has the shape of a square. 2. The fiber optic cable suspension assembly according to claim 1, characterized in that the bracket is made shortened with one or two suspension elements in the form of an earring. 3. The fiber optic cable suspension assembly according to claim 1, characterized in that the bracket is elongated with one or two suspension elements in the form of an earring. 4. The suspension unit of the fiber optic cable according to claim 1, characterized in that the bracket is made of a dielectric type DC.

Description

The utility model relates to the field of electric power and can be used on overhead communication lines of railway transport or power transmission as a suspension of a fiber-optic cable on the supports of the contact network of Russian Railways, for example, on the metal supports of the contact network of Russian Railways.

It is known "Device for suspension of a dielectric fiber-optic cable on the support of the contact network" (certificate for utility model of the Russian Federation No. 35478, H02G 7/06, H02G 7/08, priority 10/17/2003, published January 10, 2004), containing actually installed on the foundation a support in the form of a high-rise structure with a head, on which wires of a contact AC network, single-phase high-voltage wires and a train radio waveguide, made in the form of a metal wire, are hung, as well as bearing to the high-rise structure below the head Bracket for attaching a fiber optic cable. In this case, the dielectric fiber-optic cable is equipped with a protective shield located in the area of the suspension to the support bracket, and is fixed by means of spiral or support clamps with local grounding of the metal elements of the shield and clamps, and the waveguide is mounted on the support bracket near the fiber optic cable with the possibility of compensating for the harmful effects of the electromagnetic field and eliminating the formation of an electric arc in the place of suspension of the fiber optic cable.

The use of this device prevents any damage to the outer sheath of the fiber optic cable by eliminating the harmful factors associated with the formation of an electric discharge and damage to the cable. However, this device has limited functional use for use only on reinforced concrete supports.

Also known is the “Suspension system for a dielectric fiber optic cable on the supports of the AC contact network of railway sections” (Standard design decisions 419813, approved by the Ministry of Railways of the Russian Federation, put into force on 01.07.99, 419813-100 CX), which contains supporting clamps, brackets with suspension elements fixed with clamps on the supports of the contact network, while the supporting clip is fixed to the suspension element of the bracket

The disadvantage of this system, suspended on the reinforced concrete supports of the contact network, is the insecurity of the fiber-optic cable, its protective sheath and the optical fiber placed with this system, from electrothermal damage due to breakdown by electric discharges caused by induced voltage from the high-voltage contact network in railway sections with electric traction of alternating current and high-voltage wires.

The closest in technical essence and the achieved effect to the claimed utility model is the device "Suspension system of a dielectric fiber-optic cable on the supports of the contact AC network of railway sections (Options)" (patent for utility model of the Russian Federation No. 71827, H02G 7/05, priority July 6, 2007, published March 20, 2008), selected for the prototype, which contains brackets with suspension elements fixed with clamps on the supports of the contact network and supporting clamps fixed on the suspension elements of the bracket, between x Muth for fixing the bracket and the support installed catenary insulating gasket, and a second insulating gasket installed between the bracket abutments and catenary support. Insulating gaskets are made of polyethylene. In another embodiment, instead of insulating gaskets, the suspension system of the dielectric fiber optic cable is provided with insulators, the insulator is fixed between the suspension element of the bracket and the supporting clip. As an insulator, a rope of polymer material can be used. In the third embodiment, the suspension system of the dielectric fiber optic cable is equipped with a steel wire with mounting belts for fastening to the fiber optic cable, while on each support the steel wire is connected to the ground circuit, and the ground network of the contact network support can be used as the ground circuit .

The device achieves the prevention of electrothermal destruction of the dielectric fiber optic cable caused by electrical breakdown as a result of induced voltage from the high-voltage contact AC network and high-voltage wires suspended on the concrete supports of the contact network. However, this device has a limited functional purpose, designed to suspend the wok on reinforced concrete supports of the contact network, does not find effective use when using new types of supports of the contact network, namely, metal supports, for example, type M, MP. In addition, the design of this suspension has sufficient complexity of the process of its installation and manufacturability of the installation.

Thus, in all of the above devices, the brackets are attached to reinforced concrete supports using clamps, which meets the requirements for organizing the installation of FOCs on reinforced concrete supports, but does not satisfy the effective suspension of FOCs on metal supports of the contact network. In addition, these known structures are complex and expensive to manufacture and install.

The technical result that can be obtained by using the utility model is to improve the quality of the wok assembly, to realize the possibility of organizing the wok assembly on the metal supports of the contact network. At the same time, a simplification of the design of the suspension device, its cheapening, increasing the reliability of fastening during installation and ensuring the mobility of the suspension unit for operation in two spatial planes is achieved.

The problem to which the claimed utility model is directed is to expand the functionality of the mounting of the wok suspension assemblies. At the same time, improving the quality and manufacturability of installation, reliability of work is achieved in order to ensure the safety of train traffic in railway transport by improving the quality of telecommunications on railways.

The problem is solved due to the fact that in the suspension unit of the fiber-optic cable on the supports of the contact network of railway sections, containing a bracket for fixing on the supports of the contact network with suspension elements and a supporting clip, mounted on the suspension elements of the bracket, contains a bracket with suspension elements, made in the form of an earring, and also - a corner for fixing on the metal supports of the contact network, having the ability to install on the parallel bracket the faces of the metal support, connected between each other with two threaded rods in the form of studs, with the help of nuts and washers, and one of the washers has the shape of a square.

In this case, the bracket can be made shortened or elongated, with one or two suspension elements in the form of an earring. In addition, the bracket can be made dielectric, such as a recreation center.

Thus, the claimed wok suspension assembly provides enhanced functionality while maintaining high quality and manufacturability of installation, wok operation on railway sections in order to ensure the safety of train movements, which is achieved through the use of new design elements of the device in their design, their location. In particular, new elements of the suspension unit are used, made in the form of an “earring” having the shape of “ears”, which create a simple and reliable form of attachment when suspending the claimed unit on metal supports, which simplify installation.

The essence of the claimed utility model is illustrated by drawings:

in FIG. 1 shows the design of a wok suspension assembly on metal M-type supports on a single-ear bracket, FIG. 2 shows a section AA of the suspension unit, FIG. 3 shows a section of the BB node;

in FIG. 4 shows the design of the suspension assembly of two woks on metal supports of type MP on an arm with two earrings, FIG. 5 shows a section AA of the suspension unit, FIG. 6 shows a section of the BB node.

The suspension unit includes the following main elements and parts:

suspension elements made in the form of an earring - 1 for mounting the suspension unit on metal supports 2 of the contact network of railway sections, for example, types M and MP;

bracket - 3 with suspension elements in the form of earrings 1;

supporting clamps - 4, for example, type ПСО-Dmin / DmaxП-11;

threaded rod - 5, in the amount of two parts, made in the form of studs, for suspension of fiber optic cable (FOC) 6 on the bracket 3;

corner - 7;

square washer - 8, washer 8 is made in the form of a square to enhance the strength of the corner 7;

washer - 9 with nut - 10 - standard.

The inventive device is intended for the suspension of self-supporting fiber-optic communication cables 6 with a diameter of up to 20 mm and a permissible cable tension of 3000 (300) to 9000N (900 kas) on metal supports 2 of the contact network of Russian Railways.

The suspension unit of the fiber optic cable on the supports of the contact network of railway sections contains a bracket 3 with suspension elements made in the form of an earring 1, a support clip 4 attached to the suspension elements 1 of the bracket 3, as well as a corner 7 and two threaded rods 5 in the form of studs connecting the corner 7 and the bracket 3 with the help of nuts and washers 8, 9, 10, including 8 square washers.

Moreover, the bracket 3 with the suspension elements in the form of earrings 1 can also be made shortened or elongated - with one or two earrings 1 depending on the specific conditions of the design of the object. The bracket 3 can be made dielectric, such as a recreation center.

The bracket 3 is mounted on the metal supports 2 with the help of a corner 7, two threaded rods 5, the corresponding fastening elements: four square washers 8 and standard 9 washers with nuts 10. In this case, the corner 7 is mounted on the face of the metal support 2 parallel to the bracket 3. Bracket design 3 and its fastening by means of a threaded connection 8, 9, 10 exclude the rotation of the bracket 3 in horizontal and vertical planes with the suspension of the wok 6.

The implementation of the washer 8 in the form of a square helps to strengthen the strength of the corner 7, which gives a positive effect with possible additional loads in the area of the oval hole of the bracket 3.

The following types of clamps are used as clamps supporting 4: ZP- ..., ZPM-, ZP-S ..., ZP-US ..., PSO-Dmin / DmaxP-13 and NSO-Dmin / DmaxP. The specific brand of clamp holding 4 is determined in relation to a particular design object.

New types of contact network supports are used, namely, metal supports 2.

Examples of types of metal supports 2, types M and MP are given:

Type of support Support height from UOF (rack length), mm h mm Bracket mounting height N, m MShK-10-60 9600 160 5.0-8.5 MK (MGK) 180 MShK-12-60 1200 160 The mounting height of the brackets 3 is determined by design. The range of mounting heights is indicated with reference to the base of the support 2. MShK 12-100 200 MShP-10-100 9600 220 MGP-10-100 250 MSHP-12-100 1200 220 MGP-12-100 250

Overhead transmission towers of type CB can also be used.

The binding of the mounting height of the brackets 3 for the wok 6 suspension from the head level (UTR) is set according to the design. When linking the wok 6 in height, you should be guided by the indications of typical wok suspension options. For the wok suspension, brackets of 3 several lengths are provided. The choice of the length of the bracket should be made in accordance with the "Rules of suspension and installation of the Second World War" (paragraph 2.8 No. CE / CIS 677). In addition, when hanging the wok 6 on the metal supports 2 of the contact network on the outside of the curve, you should check the possibility of using brackets 3 of the selected length, determining the position of the wok 6 relative to the approximation size of the buildings.

Earthing of the brackets 3 is required if the wok 6 with a metal core or with metal armor is suspended on the brackets 3, and also if there are wires above 0.4 kV over the cable. It is not necessary to ground the brackets 3 when the wok 6 is suspended on them with a dielectric core and the absence of wires above 0.4 kV from the field side above it.

When VOK 6 is suspended on metal supports 2 of the contact network at the VOK fastening points with clamps supporting 4 types of RFP under unfavorable operating conditions on the network of JSC Russian Railways, electro-thermal degradation of VOK can occur, caused by the following factors: capacitive leakage currents resulting from exposure of the VOK to alternating the electromagnetic field of the contact network and other high-voltage wires suspended on the supports of the contact network; leakage currents of the contact network, supply and reinforcing wires and 25 kV DPR, if the resistance of the grounding devices of the structures and equipment of the contact network and the overhead lines combined with it do not correspond to the norm, as well as in the case of contamination of insulators; the influence of an electromagnetic field on the structure of the wok with the formation of polarization processes in its elements, which are accompanied by dielectric losses.

If necessary, clamps are used that support 4 types of RFP with the possibility of being equipped with inserts from conductive rubber of the LD-05EP brand according to TU 2512-01756226489-2005. These inserts are used both as part of clamps 4 and as a stand-alone kit for replacement in already installed clamps 4.

The dielectric brackets 3 are effective for use, eliminating the flow of currents induced on the wok 6 through it, which prevents the thermoelectric degradation of cable 6 at the points of suspension, improves the dielectric characteristics of bracket 3, extends the life of cable 6, and uses bracket 3 for suspension as a fiber optic cable and waveguide wires. The device for fixing the dielectric bracket 3 on a metal support (not shown in the drawing) fixes the base on the support and prevents the bracket from sagging and deviating from the support in the horizontal plane under the influence of the weight of the wok cable.

The service life of the elements of the wok suspension assemblies is at least 25 years. The restoration of anticorrosion coatings of the brackets 3 and other structures is carried out in conjunction with the metal structures of the contact network according to the relevant service standards.

The claimed technical solution is developed taking into account the use of new types of metal supports of the contact network and dielectric brackets of the recreation center in coordination with JSC Russian Railways in connection with the development of standard materials for the design of 411307-TMP “FOCUS suspension units using the existing railway infrastructure”. The further use of TMP in the design and construction of communication facilities by means of suspending the wok on the metal supports of the contact network of JSC Russian Railways of alternating and direct current, as well as on the automatic blocking lines of railways with the aim of improving the quality of telecommunications in rail transport, is supposed.

Claims (4)

1. The suspension unit of the fiber optic cable on the supports of the contact network of railway sections, containing a bracket for mounting on the supports of the contact network with suspension elements and a support clip, mounted on the suspension elements of the bracket, characterized in that it contains a bracket with suspension elements made in the form earrings, and a corner for fixing on the metal supports of the contact network, interconnected by two threaded rods in the form of pins, with nuts and washers, while one of the washers has the shape of a square. 2. The suspension unit of the fiber optic cable according to claim 1, characterized in that the bracket is made shortened with one or two suspension elements in the form of an earring. 3. The suspension unit of the fiber optic cable according to claim 1, characterized in that the bracket is elongated with one or two suspension elements in the form of an earring. 4. The suspension unit of the fiber optic cable according to claim 1, characterized in that the bracket is made of a dielectric type DC.

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