RU192641U1 - CORNER CONNECTOR FOR GLASS CABLE TRAYS - Google Patents

Abstract

The inventive utility model relates to composite elements for electrical purposes and is used when laying cables in fiberglass trays. The corner connector acts as the corner elements of the T-shaped and cross-shaped branches of the route, connecting straight sections with each other. The technical task of the claimed utility model is to create a fiberglass corner connector that allows you to branch the cable route at an arbitrary angle without reference to the width and execution of the tray. is to ensure the rotation of the cable route at an arbitrary angle. The technical result is achieved by the fact that the angular connector for fiberglass cable trays are extruded from fiberglass-reinforced SMC material and contain an angular element including a vertical plate and a horizontal base pivotally connected on both sides to plates having holes for mounting to cable trays.

Description

The inventive utility model relates to composite elements for electrical purposes and is used when laying cables in fiberglass trays. The corner connector acts as the corner elements of the T-shaped and cross-shaped branches of the route, connecting straight sections with each other.

In most well-known solutions (RU2251182, EP2846428, KR20150124593), corner sections are used to organize a cable route branch, which are a shaped or prefabricated element of a given size. This solution has several disadvantages:

- each size of the tray requires its own size of the corner section (in this case, the size may differ both in the width of the connected trays and in the “left / right” version);

- the connection angle in the section is rigidly fixed and does not allow deviations of the actual course of the route from the right angle.

Also known is a connector for cable trays (CN201462187, publ. 12.05.2010), which is a curved structure that includes an arc plate connected at the lower end to a rectangular plate containing a groove for inserting the bottom panel of the tray, and through holes for fasteners. The disadvantage of this solution is also the structural rigidity, which does not allow to organize the rotation of the cable route to an angle other than 90 °.

In addition, the most common branching solutions are made of sheet metal, which is susceptible to corrosion and requires special processing during installation and subsequent operation. Also a significant drawback of metal products is the large weight (compared with fiberglass elements).

Based on the foregoing, the technical task of the claimed utility model is to create a fiberglass corner connector that allows you to branch the cable route at an arbitrary angle without reference to the width and execution of the tray.

The technical result is to ensure the rotation of the cable route at an arbitrary angle.

The technical result is achieved by the fact that the corner connector for fiberglass cable trays is extruded from fiberglass-reinforced SMC material and contains an angular element including a vertical plate and a horizontal base pivotally connected on both sides to plates having holes for mounting to cable trays.

The corner connector for fiberglass cable trays is a prefabricated element of four parts: the L-shaped part is connected on two sides with hinge elements to two plates, which, in turn, are attached to the tray through oval holes, the fourth part is a cover mounted on top of fixing in places of loop connection.

To ensure the connection of fiberglass cable trays, it is necessary to use connecting elements made of the same material to prevent deformation due to thermal expansion of the route materials.

All parts are extruded from fiberglass-reinforced SMC material.

Polyester sheet press material or Sheet molding compound (SMC) is a sheet, pre-impregnated, chemically thickened glass-filled thermosetting press material. Range of SMC properties: bending strength 100-150 MPa, electric strength 12 - 30 kV / mm fire resistance according to GOST 28157 - PV-0, heat resistance 200-250 ° C, water absorption 0 - 0.5%.

The use of SMC material in the corner connector allows you to achieve the following advantages compared to metal products:

- longer service life (more than 50 years),

- light weight

- lack of need for anticorrosive and fire protection,

- elimination of the need for grounding,

- the possibility of use in aggressive conditions (aggressive environments, temperatures from -60 to +130 ° C).

The design of the corner connector for fiberglass cable trays is presented in figure 1 and figure 2.

The angular connector for the cable tray and cable ladders includes an angular element 1, two plates 2 and a cover 3 (Fig.1,2).

The corner element 1 (Fig. 2) is an integral L-shaped part, including a vertical plate 4 and a horizontal base 5. On the vertical plate 4, there are hinged elements with through holes on two sides, connected by a stud or bolt with hinged elements plates 2. Plates 2 contain a group of oval-shaped holes for attachment to the side wall of the cable tray. The shape of the holes allows you to compensate for thermal expansion and simplify the installation of the route.

The cover 3 contains through mounting holes. The cover is used to ensure the integrity of the assembly and prevents foreign objects from entering the cable tray.

Implementation of a utility model.

In FIG. 3 and 4 illustrate the use of an angular connector for organizing a T-shaped branch of a cable route with an angle of rotation from 70 ° to 110 °. The connection is realized through two corner connectors, which form the walls and the bottom of the tray in the corner zones.

The assembly is carried out as follows: plates 2 are attached to the plate 4 of the corner connector on both sides with the help of bolts mounted downwards. The plates 2 are attached to the connected cable trays with 6 screws. The cover 3 for the corner zone is fixed on the bolts used to connect the plates 2 with the corner element 1, by means of a nut. Thus, the cover 7 of the fiberglass tray 6 and the cover 3 of the corner zone provide an enclosed space of the cable tray, preventing foreign objects from entering it.

Figures 5 and 6 illustrate an application of a corner connector for arranging a cross-shaped branch of a cable route with an angle of rotation from 70 ° to 110 °. The connection is realized by means of four corner connectors, which form the walls and the bottom of the tray in the corner zones.

The assembly is carried out as follows: plates 2 are attached to the plate 4 of the corner connector on both sides with the help of bolts mounted downwards. The plates 2 are attached to the connected cable trays with 6 screws. The cover 3 for the corner zone is fixed on the bolts used to connect the plates 2 with the corner element 1, by means of a nut.

Claims (3)

1. An angular connector for fiberglass cable trays, made by extrusion of fiberglass-reinforced SMC material, forming an angular zone of the cable tray and containing an angular element including a vertical plate and a horizontal base, and pivotally connected on both sides with plates having holes for fasteners to cable trays. 2. The corner connector according to claim 1, characterized in that it comprises a cover for the corner zones of the cable tray connections. 3. The corner connector according to claim 1, characterized in that the mounting holes are oval.

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