The installation method of the overhead optical cable joint box: one is fixed on the pole, the optical cable joint box is parallel to the pole, such as the cap type optical cable joint box is fixed; the other is fixed on the pull wire, the optical cable joint box is fixed The plane is parallel to the pull wire, and it is common to see the optical cable splice box drawn from both sides.

When the horizontal overhead optical cable splice box is fixed on the cable, the first is because the flat orientation of the splice box is vertical to the road, so it is more wind-inducing, and the splice box is very easy to shake; the second is that the sealing seam faces upwards, when the sealing is invalid When , the water can easily enter the splice box; the third is that the fiber winding tray in the splice box is in a vertical state, and the fiber optic connector and the embedded metal are very easy to get rid of the original position and are in an unstable state. For example, turn the splice box 90 degrees. Then you can remove the bad elements on the top, and pay special attention to the fiber winding disk facing up.

Therefore, the installation of overhead optical cable splice box needs to consider the following aspects:

(1) Reduce the wind resistance and reduce the shaking of the joint box;

(2) The sealing gap should face downward or sideward as much as possible to avoid the entry of precipitation when the sealing is invalid;

(3) Make the fiber winding reel in the splice box level and face up, so that the optical fiber connector and the embedded metal in the fiber winding reel are in the most stable condition, so as to prevent common failures to the greatest extent.

For the cap-type joint box that is fixed and fixed on the overhead pole, it is not easy to shake under the action of the wind, because the cable outlet and the sealing seam are all facing down, so the precipitation is not easy to enter the joint box; but the joint box is not easy to enter. It is installed vertically. The fiber winding reel in the splice box is in a vertical position, and the fiber optic connector and the embedded metal are very easy to get rid of the original position and are in an unstable situation. This is also a defect that the cap-type splice box cannot get rid of. Therefore, the fiber optic connector and the embedded metal in the fiber winding tray must be properly fixed and kept in a stable condition, otherwise it is very prone to failure; for direct buried connectors and For pipe joints, just make sure that the fiber spool is facing upwards.

In order to better ensure that the fiber winding reel is facing upward, the housing orientation of the fiber winding reel should be marked on the outside of the outer casing of the optical cable splice box, especially the cap-type optical cable splice box, and there should be a certain indication on the outside of the splice box shell. is a permanent sign.