| 摘要 |
The invention relates to a manhole with an anti-theft system, formed by a cover that can be coupled to a ring-shaped base on which it rests, said ring including a semi-circumferential slot to which a first tube (2) is coupled, said first tube in turn being secured to the walls of the structure of the manhole by means of clamps (3). A second tube (7) is secured to the lower part of the cover, close to the periphery in a perpendicular manner, and is more than double the length of the first tube (2) that is inserted therein. The free end of the second tube (7) is provided with a through-hole (8), transverse to the second tube (7), where a bolt (9) is coupled. Said bolt (9) is protected by a sheath (4). The cover is also equipped with a groove (6) for the introduction of a security key (10) for opening or closing internal locks (11) located in a compartment (28) in the lower part of the cover. The aforementioned internal locks are formed by one tube inserted inside another and driven by a spring, also comprising a flange transverse to the tube and in which the key is inserted. |
