The Basic Introduction Of Suspension Clamp
Nowadays, it is widely used in China, and its features are easy and quick to install. The following are introduced:
(1) Old-fashioned ship-shaped clamp
This kind of clamp wire and lightning protection wire can be used. It can withstand the installation load of the conductor in the vertical span, and does not allow the clamp to slide or detach from the insulator string when the line is in normal operation or when the line is broken. The pole tower using this clamp has a large bearing pressure.
(2) Pre-twisted suspension clamp
Function and use: It is used for the connection of ADSS optical cable, OPGW optical cable, various wires, etc. in linear poles and towers. The combination of inner and outer spiral pre-twisted wires can protect the optical cable well, without concentrated stress, avoiding bending stress, and connecting the optical cable. To the role of protection and auxiliary vibration reduction. The complete set of suspension clamps includes: inner and outer layers of pre-twisted wires, suspension heads and matching connecting hardware. The grip strength of the clamp is greater than 10%-20% of the rated tensile strength of the optical cable, which is easy to install.
Suspension clamps include pylons, U-shaped screws and hull.
Regarding the maximum deflection angle, the suspension clamp has a certain limit. When the hull rotates to a certain angle, the U-shaped screw will be blocked by the pylon. The maximum deflection angle is also a safe operating condition. The maximum deflection angle is related to the hanging angle of the wire on both sides of the tower suspension point or the ground wire, and is also related to the diameter of the wire and the ground wire (the outer diameter of the wire should include the thickness of the wrapped aluminum tape or the diameter of the protective wire). The larger the diameter is, the U shape The more the screw is moved upward, the smaller the maximum deflection angle. If it is greater than the maximum deflection angle, measures must be taken, such as changing the double line clamp, adjusting the tower height, or specially designing a new line clamp.
