CN204927955U - Support of using when overhead transmission line let -down ground wire, optical cable - Google Patents

Abstract

The utility model discloses a bracket used for laying ground wires and optical cables of an overhead power transmission line. The other end of the horizontal support is provided with a lifting ring, and the lower part of the vertical support is provided with a slot for clamping on the iron tower bolts. The utility model is equipped with vertical supports, horizontal supports and oblique supports, which are used as auxiliary support devices when the high-voltage transmission lines above 500kV are placed on ground wires and optical cables. The space at the connection with the iron tower is small, and the range of tightening the ground wire after the trolley is suspended is too small. The operator cannot tighten the ground wire, and it is difficult to remove the accessories and release the ground wire.

Description

A support for laying ground wires and optical cables on overhead transmission lines

technical field

The utility model relates to a bracket used for laying ground wires and optical cables of overhead transmission lines, which is suitable for the handling of overhead ground wires and optical cable drop wires of high-voltage transmission lines above 500kV and the installation and replacement of fittings.

Background technique

In the maintenance work of ground wire and optical cable of 500kV transmission line, it is often necessary to drop the ground wire and optical cable to complete the maintenance work on the ground. When dropping the line, it is necessary to hang a block on the ground wire support, use the grinding rope to lift the ground wire, remove the suspension clamp of the ground wire, and then lower it. Due to the short distance between the tower material and the ground wire and optical cable at the place where the ground wire is suspended, the space is insufficient, so that the lifting range of the ground wire or optical cable by the grinding rope is too small, and even the bottom end of the block is lower than the suspension height of the ground wire or optical cable after the pulley is suspended. Let the pulley lose its function, and it is impossible to complete the disassembly and assembly of the ground wire or optical cable fittings. In order to solve this problem in the previous work, bundled thick wooden sticks were often used as temporary heightening brackets to increase the distance between the tower suspension block and the ground wire. Although this method solves the problem of short distance between the ground wire support and the ground wire, the wooden stick is less safe and more inconvenient to carry, thereby reducing the work efficiency of the operators and increasing the labor intensity.

Utility model content

The technical problem to be solved by the utility model is to provide a simple structure, easy to use and high safety support for the overhead power transmission line used for laying down the ground wire and the optical cable.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a support for overhead power transmission lines when laying ground wires and optical cables. The support and the horizontal support connected to the top of the vertical support, the other end of the horizontal support is provided with a lifting ring, and the lower part of the vertical support is provided with a slot for clamping on the iron tower bolts.

The vertical support is two pieces of angle steel set vertically back to back, two oblique supports are provided, one is arranged on both sides of the vertical support, one end of the oblique support is connected to the upper part of the vertical support, and the other end Claws for installation on iron towers are provided, and jacking wires are arranged on the claws.

The oblique supports are angle steels, and after the two oblique supports are installed, they are connected by connecting bolts.

The horizontal support is an angle steel, and the horizontal support is arranged between two angle steels of the vertical support.

The beneficial effects produced by adopting the above-mentioned technical scheme are:

The utility model is equipped with vertical support, horizontal support and oblique support, which are used as auxiliary support devices when the ground wire and optical cable are placed on the transmission line above 500kV high voltage, and the original ground wire or optical cable is changed due to fittings and optical cable or ground wire. The space at the connection with the iron tower is small, and the range that the ground wire can be tightened after the trolley is suspended is too small. The operator cannot tighten the ground wire, and it is difficult to remove the accessories and release the ground wire. And the utility model is a triangular stable structure design, each part is connected by bolts, has the characteristics of light weight, small size, strong material, etc. In use, it is easy to carry and has high safety. It is suitable for various tower shapes by replacing parts. It can be widely used in maintenance of ground wires and optical cables of 500kV and above overhead transmission lines.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Among them, 1. horizontal support, 2. suspension ring, 3. vertical support, 4. connecting bolt, 5. claw, 6. jacking wire, 7. oblique support, 8. card slot.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Referring to accompanying drawing 1, the utility model comprises a vertical support 3, an oblique support 7 connected with the vertical support 3 by bolts and a horizontal support 1 connected to the top of the vertical support 3 by bolts, and the other end of the horizontal support 1 is suspended There is a lifting ring 2, and the lower part of the vertical support is provided with a slot 8 for being stuck on the iron tower bolt.

The vertical support 3 is two back-to-back vertically arranged angle steels, two diagonal supports 7 are provided, one is respectively arranged on both sides of the vertical support 3, one end of the diagonal support 7 is connected to the vertical support 3 The upper part is connected, and the other end is provided with a claw 5 for installation on the iron tower, and the claw 5 is provided with a top wire 6 .

The oblique support 7 includes two angle steels, which are connected by connecting bolts 4 after the two angle steels are installed. The horizontal support 1 is an angle steel, and the horizontal support 1 is arranged between two angle steels constituting the vertical support 3 .

After adopting the utility model, the operator on the tower fixes the claw 5 of the oblique support 7 of the bracket on the iron tower during operation, and the clamping groove 8 of the vertical support 3 is stuck on the iron tower bolt to form a stable triangular structure, which is fixed on the iron tower On the ground wire support, then the block is hung on the suspension ring 2 of the support, and then the setting-out maintenance work can be started.

The utility model can be widely used in maintenance work of ground wires and optical cables of 500kV and above overhead transmission lines.

Claims (4)

1. a support when overhead transmission line let-down ground wire, optical cable, it is characterized in that: it comprises vertical supporting (3), the bearing diagonal (7) be connected with described vertical supporting (3) and the horizontal support (1) being connected to vertical supporting (3) top, described horizontal support (1) other end is provided with suspension ring (2), and described vertical supporting bottom is provided with the draw-in groove (8) for being stuck on steel tower bolt.

2. support when overhead transmission line let-down ground wire according to claim 1, optical cable, it is characterized in that: described vertical supporting (3) is the angle steel of two pieces of back-to-back vertical settings, described bearing diagonal (7) arranges 2, one is respectively arranged in the both sides of vertical supporting (3), one end of described bearing diagonal (7) is connected with the top of vertical supporting (3), the other end is provided with the claw (5) for being arranged on steel tower, and described claw (5) is provided with jackscrew (6).

3. support when overhead transmission line let-down ground wire according to claim 2, optical cable, is characterized in that: described bearing diagonal (7) is angle steel, connects after two bearing diagonals install through attachment bolt (4).

4. support when overhead transmission line let-down ground wire according to claim 3, optical cable, is characterized in that: described horizontal support (1) is angle steel, and described horizontal support (1) is located between two angle steel of formation vertical supporting (3).