The parallel groove clamp is used for the connection of aluminum stranded wire or steel core aluminum stranded wire of small and

medium cross-section and steel stranded wire of overhead lightning protection wire at a position that does not bear tension. It is also

used for jumper connection of non-linear poles and towers, power engineering materials (Fittings) Connecting wires are mainly used

for power line engineering.

Among them, the bolt-type parallel groove clamp is made of plate-plate structure and aluminum alloy material. The connecting wire is

fixed in the upper and lower grooved splints by the fastening pressure of the bolt to complete the connection, and then transmitted

through flat washers and spring washers.

Provides a relatively uniform and constant pressure to the connecting wire. It can be disassembled after installation. It is often used at

the jumper or ground wire lap joint at the strain end of the line to ensure that the clamp has sufficient and even pressure on the wire.

The clamp generally adopts a two-bolt or three-bolt structure, and the installation requires uniform force when tightening the bolts.

Reliability of parallel groove clamp:

The H-type parallel groove clamp is installed with special hydraulic tools, and the pressure on the wire is relatively uniform and constant.

The connection with the wire is a one-time hydraulic shaping, so that the inner wall material of the wire clip is embedded in the outer gap

of the wire. Because the wire clip and the outer strand of the wire are of the same aluminum-based material, it can reduce stress relaxation

and compensate for wire creep.

The best mechanical stability should belong to the wedge-shaped parallel groove clamp. Due to the arch structure and wedges, when the wire

creeps due to various reasons, the arch structure and the wedges can compensate for the creep, and the initial pressure during installation is

provided by a special bullet, which can be achieved by reasonable control of the amount of charge The goal of controlling stress.