RU185223U1 - CHANNEL PROTECTIVE COVER FOR WOODEN SUPPORTS - Google Patents

Abstract

The utility model relates to the field of electric power and communications, can be used to repair wooden supports of overhead lines, in case of loss of bearing capacity of the support strut at the junction of the ground-air. The useful model is a steel structure, characterized in that it includes two channels mounted on top of a wooden supports opposite and connected by corners and studs in three places, designed to repair wooden supports of the overhead line in case of loss of bearing capacity of the racks of wooden supports of overhead lines in place ground-to-air interface in sections. Well-known technical solutions given in patents RU 2435917 and RU 2371560, which coincide in their functionality with the proposed utility model, are not intended for wooden supports of overhead lines. In addition, the technical solution described in patent RU 173065 is known. , which can be used for wooden support of overhead lines, but differs in a number of improved characteristics in comparison with a rounded protective pad, namely: the possibility of natural ventilation between the protective pad and The use of a utility model extends the service life of wooden supports of overhead lines when the bearing capacity of the support strut at the junction of the ground-air is lost, the utility model is aimed at simplifying the production and organization of repair of wooden supports, solves (reduces negative factors) problems, associated with the shortcomings of existing support repair options.

Description

Area to which the utility model belongs

The utility model relates to the field of electric power and communications; it can be used to repair wooden supports of overhead lines in case of loss of the bearing capacity of the wooden pillar of the support at the junction of the ground-air.

State of the art

Known technical solutions in which to restore the bearing capacity of a power transmission tower support, a device of reinforcing elements to a support is used, in this case, reinforced with braces or struts attached to a clamp (patent of the Russian Federation RU 2435917), a device for reinforcing clips (patent of the Russian Federation RU 2371560) . These analogues are not suitable for wooden supports of overhead lines.

Also, a technical solution is known for restoring the load-bearing capacity of a wooden pillar of an overhead power transmission line support, in which a rounded protective cover is used (patent of the Russian Federation RU 173065), which is made of stainless steel. The proposed utility model has improved characteristics compared to a rounded protective pad, namely: the possibility of natural ventilation between the protective pad and the support to prevent corrosion processes. The achievement of this technical result determined the choice as the material for the manufacture of the lining - a rectangular shape of a steel channel, which does not completely adjoin the wooden support.

At the same time, it should be noted that the weight of the channel lining is less than the weight of the rounded protective lining, which reduces the cost of manufacturing the lining, and also reduces the cost of installation and transportation of the protective lining.

For a rounded protective cover (patent of the Russian Federation RU 173065), its size, in addition to achieving the necessary bending resistance, is determined by the diameter of the support, and therefore the total internal diameter of the cover is made more than 25 cm. The rounded protective cover is made of two steel sheets with a thickness of 4 mm or more more than 420 mm (analogue of a longitudinally cut pipe with a diameter of 273 mm). In the channel protective pad, due to the presence of stiffeners, the moment of resistance to bending of the cross section of two oppositely installed channels of the 18L brand corresponds to the necessary stiffness for the repair of wooden supports. Also, the form allows you to install the overlay on top of a wooden support, regardless of the diameter of the support. The weight of the channel protective cover can vary from 35 to 50 kg, the weight of the rounded protective cover is more than 60 kg.

Alternative methods and traditionally used methods for repairing wooden supports of overhead lines (without using the listed technical solutions) are: complete replacement of the support strut, replacement of the stepson or installation of the stepson (if there is none).

Utility Model Disclosure

The utility model is a steel structure used to repair wooden poles of overhead power lines or communications in case of loss of bearing capacity of the pillar from rotting or other damage at the ground-air junction. The utility model is installed on existing supports with digging to a depth of 0.5 meters, with further driving deeper into 0.5 meters. The height of the lining itself is 2 m, respectively, after installation, half of the lining (1 m) below ground level, half above ground level. This ensures the strengthening of the weakest part of the support, subject to rapid decay - the junction with the ground. Due to the strength of the steel lining, the stability of the support increases, respectively, the service life is extended.

Structurally, the protective pad consists of two channels of a dimension comparable with the L18 grades and up to P20 according to GOST 8240-97 (or analogues) 2 meters long, 6 steel corners with a shelf width of 40-50 mm, a thickness of 4-5 mm, a length of 350-500 mm , 6 threaded studs M18 (M20) 400-500 mm long, 12 nuts M18 (M20), washers. In a pre-assembled form, the protective pad consists of 2 channels installed opposite and connected by corners and studs in three places.

Salient features that characterize the utility model: Use of the utility model is assumed in cases where the transmission line support, which must be replaced due to an unsatisfactory condition, namely a violation of integrity / decay at the junction with the ground, is located in vehicles and special equipment that are difficult to access for carrying out work to replace the support strut with a new one.

The use of the U-shaped channel in the construction of the utility model, due to the loose fit to the support, provides natural ventilation and prevents the development of corrosion processes, which is the technical result of the utility model.

In addition, the prefabricated design of the utility model allows you to carry out all work on the installation of the utility model from the ground, manually, without performing work on the upper part of the structure of the existing support, which reduces the estimated cost of installing power line poles by reducing the lead time and lack of work the cost of using special equipment.

When installing a utility model on an overhead line support, the following types of work are carried out:

manually digging up the earth around the support to a depth of 0.5 m;

the installation of channels on both sides of the support into the recesses made around the support (with additional driving to a depth of 1 m) and the fastening of the channels on the support using corners, studs;

burying channels with tamping the earth around the support.

In addition, all installation work of the utility model is performed without disconnecting the line from voltage.

Thus, a utility model can be characterized by the following essential features:

providing natural ventilation between the overhead line support and utility model;

collapsible design;

The utility model is installed on wooden supports of overhead lines without disconnecting the voltage and without the use of special equipment.

The indicated signs allow extending the service life of wooden supports of overhead lines in case of loss of the bearing capacity of the support posts at the ground-air junction, as well as repairing such supports without the use of special equipment.

Utility Model Implementation

The essence of the utility model is illustrated in the drawing:

The figure 1 presents a three-dimensional drawing of the main parts of the lining. The length of the channels (L) is 2000 mm. The width of the channel (L1) used varies from 180 to 200 mm. The width of the side ribs of the channel (L2) varies from 45 mm to 70 mm. Each of the channels has a rectangular cover (A) from one end located above the top to prevent water from entering between the channel and the wooden support. The channel has a side with a square shape (C), a width (L4) of 50 mm for ventilation, as well as a pointed lower edge (D) of the side ribs and a cut central part (triangle height (L5) 70 mm) to facilitate the production of work to deepen the pads into the ground

The figure 2 presents a view of the protective lining on the side of the connection channel channels with studs (B). The figure 3 presents a view of the protective strip on the side of the channel. The protective pad is secured to the support in three places using drilled corners (D), threaded rods and nuts (B). The depth of penetration of the protective cover (L6) relative to ground level is 1000 mm.

Claims (1)

The protective pad for the wooden supports of the overhead lines, representing a steel structure, characterized in that it includes two channels mounted on top of the wooden support opposite and connected by angles and pins in three places, is intended for the repair of wooden supports of the overhead line.

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