Lateral end closing off device for tunnel-casing, has anchoring unit comprising teeth that project on shutter and mounted pivoting on arcade of wall so that teeth are engaged in openings of arcade and in roof

摘要

The device has an anchoring unit (16`) comprising teeth (17) that project on a shutter (19) of the unit. The teeth are mounted pivoting on an arcade of a wall (9) so that the teeth are engaged in openings of the arcade and in a roof by pivoting with the shutter underneath and around the arcade of the wall. The shutter is mounted pivoting on the arcade by a hinge rotatably coupling the shutter to the wall. An independent claim is also included for a roller shutter tunnel-casing comprising a lateral end closing device.