Three-span safety wedge-shaped backup cable clamp

The three-span safety wedge-shaped backup line clamp is an important Hardware used in the "three-span" (crossing railways, expressways and important transmission channels) sections of power lines, mainly to enhance the connection safety of conductors.

Main features

Double protection: As a backup for the main connection hardware, it provides security guarantees when the main connection fails

Wedge design: Utilizing the wedge principle to achieve self-locking function

High reliability: Specifically designed for critical crossing sections, meeting higher safety standards

Anti-corrosion performance: Usually, corrosion-resistant materials or special surface treatments are adopted

Application scenarios

It is mainly used in the following "three-cross" scenarios:

Cross the high-speed railway

Cross the expressway

Cross important power Transmission channels

Other important crossing sections

Installation requirements

The installation location needs to be determined in accordance with the design specifications

When installing, ensure the compatibility with the main connecting fittings

Installation requires the use of special tools

Necessary inspections and tests need to be carried out after installation

Product Features:

1. Simple installation and high efficiency:

The structure of the anti-string drop device for transmission lines is simple. During installation, it adopts the installation method of assembling first and then going up the tower. It is assembled at the bottom of the tower first. No large machinery is required for installation; only a wrench is needed. On the tower, simply install the device to the reserved hanging point position of the original single-string structure according to the structure, fix the wedge, adjust the screw, and tighten the overall structure. After timing measurement, the operation on the tower does not exceed ten minutes, and the speed is much higher than that of the traditional hydraulic type wire clamp.

2. Flexible installation: Single strings have various structures. The anti-drop string device for transmission lines can be flexibly installed according to the original structure of the single string without changing the original structure, forming a double-string and double-hanging structure, and does not come into contact with the original structure after installation.
3. High thermal stability: For traditional hydraulic type wire clamps, there are a total of 6 series-connected resistors (contact points) at both ends -2 bolt contact points, and 4 compression pipe contact points, with a total resistance of 6xR. However, for wedge-shaped wire clamps, there are at most 3 series-connected resistors (contact points), with a total resistance of R/3
4. Safety and reliability: The anti-string drop device for transmission lines adopts a full hardware connection structure. After installation, adjust the extension screw to keep the entire structure in a stressed state, share the tension of the original single string, and reduce the risk of the original single string falling off. When the original single string falls off, the anti-string drop device acts immediately, bearing all the tension to prevent secondary accidents.
5. Wide application range:

The anti-string drop device for transmission lines can be applied not only to the double-connection and double-hanging transformation of tensile conductors and ground wires, but also to the double-connection and double-hanging transformation of straight suspended lines, and can even be used as a main load-bearing line clamp.