The fittings of ADSS optical cable mainly include: 1) tension fittings, 2) suspension fittings, 3) shock absorbers, 4) guide wire clips. The role of tension fittings: tension fittings are mainly installed on terminal towers and tension towers. For special line sections, tension fittings are used to form a straight line of tension through connecting plates on straight towers.
1. The basic components of tensile metal fittings:
①⑤ U-shaped ring ②Connection plate ③Heart-shaped ring ④Inner and outer pre-twisted wire
For different fittings manufacturers, there are certain differences in the number of parts, but the number of basic parts is the same.
2. The installation method of tension fittings:
The first step: Install the inner pre-twisted wire. The installation position shall be installed after adjusting the sag and tension of the optical cable. Both ends of the pre-twisted wire should be even.
Step 2: Install the outer pre-twisted wire. During installation, the outer layer of pre-twisted wire has a paint mark in the middle, which means that the two ends of the outer layer of pre-twisted wire are symmetrically wound when installing the outer layer of pre-twisted wire.
Step Three: Install the Heart Ring. The installation position is at the paint in the middle of the outer pre-twisted wire.
Step Four: Install the First U-Ring.
Step 5: Install the connection board.
Step Six: Install the Second U-Ring.
Draping Fittings
The function of the hanging fittings: the hanging fittings are mainly installed on the straight pole towers, and the hanging fittings can also be used when the rotation angle of some corner towers is ≤15°.
Basic components of hanging fittings:
①U-shaped ring ②Rubber bushing, suspension clamp ③④Inner layer pre-twisted wire outer layer pre-twisted wire
For different fittings manufacturers, there are certain differences in the number of parts, but the number of basic parts is the same.
1. Installation method of hanging fittings:
The first step: Install the inner pre-twisted wire. There is a paint mark in the middle of the inner pre-twisted wire, which means that the two ends of the pre-twisted wire are symmetrical, and a suspension clamp is installed at the mark, and the two ends of the installed inner layer pre-twisted wire should be flush.
Step 2: Install the rubber gasket. Installed at the paint in the middle of the pre-twisted wire in the inner layer.
Step 3: Install the outer pre-twisted wire. There is paint in the middle of the outer layer of pre-twisted wire, and this paint point should be consistent with the paint point in the middle of the inner layer of pre-twisted wire.
Step 4: Install the suspension clamp.
Step 5: Install the U-ring.
shock absorber
The function of the shock absorber: The shock absorber is mainly installed at both ends of the tower, and the number of installation depends on the span of the line. It mainly plays the role of reducing the vibration of the optical cable.
1. The basic components of the shock absorber:
The basic component of the shock absorber is a pre-twisted shock absorber, as shown above (public number: power transmission and distribution lines).
2. How to install the shock absorber:
When installing the shock absorber, it should be noted that the small end of the shock absorber faces the direction of the tower, and 1-3 shock absorbers can be installed at the same place. The installation position of the shock absorber is about 10-15cm. If there are more than three, the distance from the front shock absorber is 10-15cm and they are arranged backwards in sequence.
Guide clip
The function of the guide wire clamp: the guide wire clamp is mainly installed on the pole tower with tension-resistant hardware, and plays the role of fixing the optical cable.
1. The basic components of the guide wire clamp:
1) Fixed rubber lining
2) U-shaped ring fixed on the tower
2. How to install the guide wire clip:
1) On tension poles with optical cable joints, in principle, every interval of 1.5-2.0 is a guide clamp.
2) On the tension pole tower without optical cable joint, two guide clamps should be installed to fix the optical cable and prevent the optical cable from scratching the outer sheath of the optical cable due to shaking at the pole tower.
3) On the terminal tower, use several guide wire clips to fix the optical cable on the tower because the optical cable is lowered to the ground.
Disposal method of redundant ADSS optical cable
After the ADSS optical cable tight line suspension is completed and the static end fittings are installed, the remaining optical cables must be fixed with special down-lead clamps (tension-resistant cement poles and iron towers) along the tension-resistant poles and towers at intervals of 1.5-2m, and the remaining Leave the optical cables on the concrete poles and iron towers, install a pair of remaining cable storage racks at a distance of more than 10m from the ground, and hang the optical cables to be welded on the storage racks, and leave them to the inspection and welding working groups to handle the work.
