Method for maintenance of overhead line plants for telecommunications

2*. A movable apparatus, for “mooring”, that is, for anchoring the self-gripping supports in a telecommunication line, according to claim 1*, characterised in that said chain has a length of 2.50 meters.

3*. A movable apparatus for “mooring”, that is anchoring, the self-gripping supports in a telecommunication line, characterised in that it is located on a corner post, and in that it comprises a couple of self-gripping supports respectively moored to two support eyelets (4′, 4″) forming end elements of a guide-chain (5), which allows, by sliding inside a ring (6) integral with the post, the lowering of the line from span level to ground level, and its subsequent lifting to the operative position after the maintenance intervention, by the use of a small rope (18);

• the said chain (5) being locked by a first, or fixing retainer (9′), and by a second, or safety retainer (9″), both rigidly connected to the post at different heights;
• the said retainers (9′, 9″) for preventing the chain from sliding, comprising a flat portion to be fixed to the surface of the post, and a projecting portion forming a bifurcation (8′, 8″), which widens outwardly and is flared, so as to allow the insertion of said chain (5) and the locking of the same, once it has been pushed towards the inner narrowed portion of the bifurcation (8′, 8″).

4*. A movable apparatus, for mooring the self-gripping supports in a telecommunication line, according to claim 3*, characterised in that said chain (5) has a length of 1.20 meters.

5*. A movable apparatus, for mooring the self-gripping supports in a telecommunication line, according to claim 3*, characterised in that it comprises a chain (5) of 1.20 meters of length, having an “Y” configuration, including a ramification with two arms, each having a length of the order of 10 cm and ending respectively in an integrally formed eyelet.

6*. A movable apparatus, for mooring the self-gripping supports in a telecommunication line, according to claims 1*-5*, characterised in that it comprises telescopic means allowing the access to the post and the respective mooring device, and suited to interact with a set of interchangeable supports, including a device with a hollow double cylinder (15), a buckle-supporting and probe-guiding support (40) and a section breaking device (30).

7*. A movable apparatus, for mooring the self-gripping supports in a telecommunication line, according to claim 6*, characterised in that the hollow double cylinder (15) substantially comprises two integrally formed elements:

• I—a first hollow cylinder (14) having a slightly greater diameter than the diameter of the telescopic rod (16), so as to be fitted and retained on the latter, and
• II—a section of a hollow cylinder (17), which is open on one side, in such a way to allow the insertion of a small rope (18) which supports a rope loop (19).

8*. A movable apparatus, for mooring the self-gripping supports in a telecommunication line, according to claim 6*, characterised in that said section breaking device (30) has a configuration similar to a removable half-collar, which is fixed, according to the kind of intervention, in an approximately intermediate and adjustable position along the telescopic rod, in order to ensure its safe use at a certain height above the ground level eliminating any flexion or oscillations of the rod;

• the said section breaking device being positioned so as to face the post with the concavity of its half-collar, thereby leaning on it and ensuring its stability.

9*. A movable apparatus for mooring the self-gripping supports of a telecommunication line, according to claim 6*, characterised in that the buckle-supporting and probe-guiding support (40) has a bent, “L-shaped” configuration, with its exit opening (41) partially cut away and flared, thereby being suited to receive a cable supporting buckle (71) and allowing the insertion of a probe, which is slid inside the cable supporting buckles of the transit posts, and allowing to carry the cable to be installed or replaced, directly from the ground.

10*. A movable apparatus, for mooring the self-gripping supports in a telecommunication line, according to any of the preceding claims, characterised in that it further comprises an elliptic collar (32) with a retainer band, including two half-collars;

• one of said collars being provided with three projecting elements having a transversally inserted rod iron which forms the anchor element, and the central one (35″) of said projecting elements separating the rod iron in two sections;
• each of these sections being suited to support a self-gripping two-way device and its respective cables.

13*. A method for the realisation and maintenance of overhead line plants for telecommunications, according to claims 11* or 12*, said overhead line plants including a section thereof which crosses a road, characterised in that for the crossing of roads or the like, a PVC tube is used which has an internal diameter of a size allowing the transit of cables, so that the repair/ replacement of these cables may be performed without being forced to lower the line to the road level, and therefore without blocking the vehicle traffic.