RU156354U1 - DIRECT BOX FOR LAYING POWER AND CONTROL CABLES AND WIRES - Google Patents

Abstract

The proposed utility model of a direct box for laying power and control cables and wires (hereinafter referred to as the box) belongs to the field of electrical engineering and can be used for laying cables and wires for various purposes. The technical result solved by the proposed utility model is to increase the reliability of the design of the box. This is achieved by the fact that in the duct containing the housing and the cover, made of a monolithic strip by bending to form the base and side walls, the duct housing has an open cross-sectional profile. The side walls of the box body in the upper part are equipped with U-shaped bends, and also have symmetrically located holes on both sides, designed for docking boxes between themselves. The base of the box body is provided with oval grooves on both sides. In addition, a symmetrical clamping plate made in the form of a rectangular metal plate, the thickness of which is more than two times the thickness of the side walls of the box body, is located inside the box body on both sides and has a central hole in the box construction. The symmetrical clamping plate is made with the possibility of regulating its location using a washer with a nut. Additionally, a threaded rod is installed in the box structure, installed at the beginning and end of the box and made with the possibility of fixing with its lower end through the oval grooves of the base of the box body by means of a threaded connection. The threaded rod is an axis with a metric thread on both sides, while a symmetrical clamping plate is fixed to it through the central hole and the box lid made of a monolithic strip by bending at right angles to form parallel side walls and the base, which is fixed by a threaded connection. Additionally, a symmetrical connecting bracket is introduced into the box structure, made by bending the monolithic strip at right angles with the formation of the base and side walls on which oval holes are located. The base of the symmetrical connecting bracket has a central hole for the threaded rod, while the symmetrical connecting bracket is installed inside the box body with the possibility of fastening one half to the end of the box body and the other half to the next box, with the upper edge of the side walls of the symmetrical connecting bracket being inserted into -shaped bend in the box body, and its base is installed on the base of the box body. In addition, a stripper having a symmetrical shape and made of a monolithic strip by bending at right angles with the formation of side walls and a base with a hole for a threaded rod and mounted on top of the box lid is introduced into the box structure. In addition, carbon steel is used as the monolithic strip from which the box parts are made. All surfaces of the box parts have anti-corrosion protection in the form of a paint and varnish coating with a thickness of at least 50 μm or a metal coating - hot dip galvanizing with a thickness of at least 80 μm, or a combined coating in the form of a paint and varnish and metal coating - hot dip galvanizing with a thickness of 50 μm and 80 μm, respectively or paintwork based on epoxy enamels. A straight box for laying power and control cables and wires can be made with perforated base and cover.

Description

The proposed utility model relates to electrical engineering and can be used for laying cables and wires for various purposes.

Known box for laying wires and cables, made sectional, containing:

- straight sections, including the body with an open cross-sectional profile;

- a cover with side walls, the cross-sectional profile of which corresponds to the cross-sectional profile of the housing walls interacting with them;

- connecting inserts made with a curved cross-sectional profile attached to adjacent sections;

- means of attaching the housing to the supporting base;

- means for connecting the cover to the housing.

In this case, the housing walls have stiffening ribs parallel to the base of the housing and directed towards each other, and on the inside of the cover there are fixing elements according to the number of threaded elements connecting the cover to the housing. Elements are made in the form of strips with stiffeners directed towards the cover. Elements with an emphasis on the ends and stiffeners are installed in the surface of the body stiffeners facing them (RF Patent No. 2066510, IPC H02G 3/04, publ. 09/10/1996).

The disadvantage of this design - the box for laying cables and wires is the complicated production technology.

The features of this box design, common with the proposed box design, are as follows:

- the presence of a housing with an open cross-sectional profile;

- the presence of a cover with side walls, the cross-sectional profile of which corresponds to the cross-sectional profile of the body walls interacting with them;

- the presence of connecting inserts.

Known box for laying electric wires and cables, adopted for the prototype, containing a rectangular base and installed along it at right angles to the side walls. The base and side walls are made monolithic by bending sheet steel. The free ends of the side walls are bent at a right angle into the duct with the formation of the sides. The box contains a strip located on the sides of the box’s inner surface and connected by a threaded connection to a lid located on the sides of the box’s outer surface opposite the strip, the thickness of which is 1.3-3.3 times greater than the thickness of the side walls and the base, in addition equipped with threaded connections, coaxial with threaded holes in the cover. The box can be made of galvanized steel (RF Patent No. 123241, IPC H02G 3/04, published on December 20, 2012).

The disadvantage of the prototype is the lack of reliability during operation of the box, due to the low mechanical strength of the structure.

Signs of the prototype, common with the proposed design of the box, the following:

- the box has a lid;

- the base and side walls of the box are made monolithic by bending at right angles;

The technical result achieved in the proposed box, is to increase the reliability of the design of the box.

This is achieved by the fact that in the duct for laying power and control cables and wires, which is made of a monolithic strip by bending at right angles with the formation of the base and side walls, the duct body is made with an open cross-sectional profile, the side walls of the duct housing are provided in the upper part U-shaped bends, as well as on both sides, have symmetrical holes for joining the boxes together.

The base of the box body is provided with oval grooves on both sides.

In addition, a symmetrical clamping plate made in the form of a rectangular metal plate, the thickness of which is more than two times the thickness of the side walls of the box body and is located inside the box body on both sides and also equipped with a central hole, is introduced into the box structure.

The symmetrical clamping plate is made with the possibility of adjusting the height of its location using a washer with a nut.

Additionally, for a vertical screed of the box body and the cover, a threaded rod is installed, installed on both sides (at the beginning and at the end) of the box and representing an axis with a metric thread on both sides.

Such installation of a threaded rod increases the rigidity of the box structure, which leads to an increase in mechanical strength and, accordingly, the reliability of the box in operation.

The threaded rod with its lower end is fixed by a threaded connection through the oval grooves of the base of the box body.

A symmetrical clamping plate is fixed on the threaded rod through the central hole in it and the cover, which is also fixed by a threaded connection and is made of a monolithic strip by bending at right angles with the formation of side walls and the base.

The presence of a threaded rod in the design unifies and simplifies the assembly of the box.

Additionally, the box contains a symmetrical connecting bracket for docking boxes between themselves, made of a monolithic strip by bending at right angles with the formation of the base and side walls.

Oval holes are made on the side walls of the symmetrical connecting bracket for mounting with the side walls of the box body through the oval holes in them.

The base of the symmetrical connecting bracket has a central hole for the threaded rod.

A symmetrical connecting bracket is installed inside the box body and is fastened with one half to the end of the box body, and the other half is attached to the beginning of the next box body by installing the upper edge of its side walls in a U-shaped bend of the box body.

In this case, the base of the symmetrical connecting bracket is located on the base of the box body.

For joining the lids of the box, a symmetrical flap is additionally introduced, made of a monolithic strip by bending at right angles with the formation of side walls and a base having a hole for a threaded rod.

The stripper is mounted on top of the box body lid.

Symmetric clamping strip is made with a thickness greater than the thickness of the base and side walls of the housing not less than twice.

The monolithic strip from which the box parts are made is made of carbon steel.

The surfaces of all parts of the box have different types of anticorrosion coating: paint coating with a thickness of at least 50 microns, metal-hot galvanizing with a thickness of at least 80 microns, a combined coating in the form of hot galvanizing with subsequent paint coating with a thickness of at least 80 microns and 50 microns and also a paintwork based on epoxy enamels.

The base of the box body can be solid or perforated.

The use of the following devices in the construction of the box increases the mechanical strength of the box, increases the reliability of the structure during operation when the boxes are joined together and the alignment of the route from the boxes into one horizontal line on the base:

- a symmetrical connecting bracket for docking boxes between themselves;

- nashchelnik for docking the covers of the boxes with each other.

The use of a symmetrical clamping plate allows you to attract the cable to be laid (wire) to the base of the box body, does not twist it, but distributes and fixes its even position in the box, that is, increases the mechanical strength of the structure, which, accordingly, increases the reliability of the structure during operation.

The thickness of the clamping strip is more than the thickness of the walls of the box body is not less than twice selected according to structural calculations taking into account the strength characteristics of the material used.

The use of a threaded rod, which serves as a vertical coupler of the box body and the lid, increases the mechanical strength of the box, and therefore increases the reliability of the structure during operation.

The thickness of the paint coating, not less than 50 microns, allows it to withstand destruction (cracking, peeling) upon impact, as well as withstand deformation of the painted surface during bending and withstand mechanical stress: indentation, scratching.

Hot-dip galvanized metal with a thickness of not less than 80 microns ensures radiation and fire safety of the equipment, has high indicators: physical and mechanical properties, impact strength, bending elasticity, tensile strength, elongation at break.

The use of a combined (paint and varnish and metallic hot-dip galvanizing) coating gives the total effect of using each coating individually.

Thus, the use of anti-corrosion coating increases the reliability of the design of the box.

The proposed box construction is shown in FIG. 1 (side view), FIG. 2 (side view), FIG. 3 (view A).

The box for laying power and control cables and wires (Fig. 1, 2, 3) consists of a box body 1 with a base 2 and side walls 3 having symmetrically located U-shaped bends 4 in the upper part and provided with symmetrical on both sides holes 5, designed for docking boxes between themselves.

On the base 2 of the box body 1, there are oval-shaped grooves on both sides of the box 6. The box contains a lid 7 on which there are oval grooves 8 on both sides.

For a vertical screed of the box body 1 and the cover 7, a threaded rod 9 is inserted, installed on both sides of the box (at the beginning and at the end), fixed by a threaded connection with its lower end through an oval groove 6 in the base 2 of the box body 1.

On top of the threaded rod 9, a cover 7 is installed, fixed by a threaded connection.

Additionally, a symmetrical clamping plate 10 is introduced into the box structure, mounted on a threaded rod 9 on top of the laid cables or wires.

The height of the symmetrical clamping plate is regulated by a nut with a washer 11.

Symmetrical clamping plate is installed inside the box 1 on both sides of the box.

Additionally, a symmetrical connecting bracket 12 is introduced into the box structure, on the side walls of which there are oval holes 13 for fastening with holes 5 located in the side walls 3 of the box body 1.

Based on the symmetrical connecting bracket 12, there is an opening 14 for a threaded rod 9.

The symmetrical connecting bracket 12 is installed inside the box body 1, and the upper edge of its side walls is inserted into the U-shaped bend 4 of the box body 1.

In addition, a slat 15 is introduced into the box structure, having a hole 16 in the base for a threaded rod 9, and mounted on top of the cover 7.

The assembly of the box is as follows:

- a symmetrical connecting bracket 12 is inserted into the box body 1 with the subsequent combination of its lateral oval holes 13 with side holes 5 located in the box body 1, and with further fixation by bolted connections;

- the threaded rod 9 is inserted into the hole 14 located at the base of the symmetrical connecting bracket 12 and through the groove of the oval shape 6 into the base 2 of the box body 1, and then this connection is fixed on both sides by a washer with nut 11;

- then the power or control cable (wire) is laid in the box;

- a symmetrical clamping bar 10 is mounted on the threaded rod 9;

- the installation height of the symmetrical clamping plate 10 is adjusted by the height of the laid cable (wire), and then is fixed with a washer with nut 11;

- on the case of the box 1 is installed a cover 7, while aligning the groove of the oval shape 8 in the base of the cover 7 with a threaded rod 9;

- on top of the lid 7 and the threaded rod 9, a slider 15 is installed through the hole 16 at its base;

- the connection of the stripper 15 with the housing of the box 1 is fixed by the washer and nut 11.

Thus, all parts of the box are connected.

All parts of the box are made of one metal.

Each part of the box is equipped with an anti-corrosion coating.

Fasteners are used in Russia according to the interstate standard.

The design of the box is resistant to seismic effects, an earthquake of 9 points, which corresponds to seismic resistance category 1.

The design of the box is stable, withstands the emerging mechanical stresses from environmental factors.

The design withstands all modes of normal operation, as well as test and emergency modes, which is confirmed by the acts of tests.

Claims (2)

1. A straight box for laying power and control cables and wires, made of a monolithic strip by bending with the formation of side walls at right angles and equipped with a lid, characterized in that the box body is made with an open cross-sectional profile and has a base, while the side walls the box bodies in the upper part are equipped with U-shaped bends, and also have symmetrically located openings on both sides, intended for the boxes to be joined together, and the base of the box body on both sides It is filled with grooves of an oval shape, in addition, a symmetrical clamping strip made in the form of a rectangular metal plate, the thickness of which is more than two times the thickness of the side walls of the box body, and located inside the box body on both sides, and having the central hole, while the symmetrical clamping plate is made with the possibility of adjusting the height of its location using a nut with a washer, in addition, a thread is additionally introduced into the box structure a threaded rod mounted on both sides of the box (at the beginning and at the end) and made with the possibility of fixing with its lower end through the oval grooves of the base of the box body by means of a threaded connection, the threaded rod being made in the form of an axis with metric thread on both sides, a symmetrical clamping plate is fixed to the threaded rod through the central hole and the box lid, made of a monolithic strip by bending at a right angle, with the formation of parallel side walls and the base, which is fixed by a threaded connection, in addition, in addition to the box structure, a symmetrical connecting bracket is introduced, made by bending at right angles to form a base and side walls on which oval holes are located, and the base of the symmetrical connecting bracket has a central hole for the threaded rod, while a symmetrical connecting bracket is installed inside the box body with the possibility of fastening one of its half to the end of the box body, the other half with the possibility of fastening to the next box, and the upper edge of the side walls of the symmetrical connecting bracket is inserted into a U-shaped bend in the housing of the box, and the base of the symmetrical connecting bracket is installed on the base of the housing of the box, in addition, a latch having a symmetrical shape and made from a monolithic strip with the formation of side walls and a base having a hole for a threaded rod, and mounted on top of the box lid, in addition, as a monolith material Carbon steel is used in the strip from which the box parts are made, and all surfaces of the box parts have anti-corrosion protection in the form of a paint coating at least 50 μm thick, or a metal coating — hot dip galvanizing at least 80 μm thick, or a combined coating in the form of a paint coating metal - hot-dip galvanizing with a thickness, respectively, of at least 50 μm and 80 μm, and also a paint-and-lacquer coating based on epoxy enamels. 2. A straight box for laying power and control cables and wires according to claim 1, characterized in that the base of the box body and the lid are provided with perforations.

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