Abstract

A centring for supporting and consolidating an excavation comprises a plurality of movable structural elements ( 11, 12, 13, 14 ) which are connected to each other in such a manner that the centring can move from a preassembled configuration, at least partially folded before the installation, to a definitive installation configuration, in which the structural elements are locked with respect to each other in a mutual position which generally defines a centring which is at least formed in an arched manner. The structural elements can be locked with structural continuity with respect to each other in a mutual position which generally defines a centring with the closed-geometry profile which comprises the centring which is formed with a closed arch at the bottom by a structural element which acts as a strut or inverted arch.

IPC Classes  ?

• E21D 11/22 - Clamps or other yieldable means for interconnecting adjacent arch members either rigidly, or allowing arch member parts to slide when subjected to excessive pressure
• E21D 11/24 - Knuckle joints or links between arch members
• E21D 11/26 - Shoes for connecting arch members to longitudinal struts
• E21D 11/28 - Longitudinal struts
• E21D 11/30 - Bases for lower arch members
• E21D 11/18 - Arch members

Abstract

A centring for supporting and consolidating an excavation comprises a plurality of movable structural elements ( 11, 12, 13, 14 ) which are connected to each other in such a manner that the centring can move from a preassembled configuration, at least partially folded before the installation, to a definitive installation configuration, in which the structural elements are locked with respect to each other in a mutual position which generally defines a centring which is at least formed in an arched manner. The structural elements can be locked with structural continuity with respect to each other in a mutual position which generally defines a centring with the closed-geometry profile which comprises the centring which is formed with a closed arch at the bottom by a structural element which acts as a strut or inverted arch.

IPC Classes  ?

• E21D 11/18 - Arch members
• E21D 11/22 - Clamps or other yieldable means for interconnecting adjacent arch members either rigidly, or allowing arch member parts to slide when subjected to excessive pressure
• E21D 11/24 - Knuckle joints or links between arch members
• E21D 11/26 - Shoes for connecting arch members to longitudinal struts
• E21D 11/28 - Longitudinal struts
• E21D 11/30 - Bases for lower arch members

Abstract

A rib for supporting and consolidating an excavation comprises at least a first structural element (5A) and at least one connection element (10) for connecting the said structural element (5A) of the said rib to a corresponding connection element (10') of an adjacent rib (1'), the said connection element (10) being capable of engaging through translatory motion with the said corresponding connection element (10') of the adjacent rib.

IPC Classes  ?

• E21D 11/28 - Longitudinal struts
• E21D 11/30 - Bases for lower arch members

Abstract

A device for connecting the structural elements, in particular elements of ribs used to support and to consolidate an excavation, reticular structures and similar, comprises at least a first housing (4; 44; 403; 411) having a cavity (14; 414; 144) and capable of being associated with a first structural element (2; 20; 200; 121), at least one connection body (5; 56; 511) having at least one insertion portion (119; 58; 591) for insertion in the said cavity (14; 414; 144) of the said first housing (4; 44; 403; 411) and capable of being associated with a second structural element (3; 30; 131), and locking means (11, 12, 13, 15, 17; 60, 61, 62, 63, 47; 621, 623, 653) for locking the said insertion portion (119; 58; 591) of the said connection body (5; 56; 511) inside the said cavity (14; 414; 144). The housing may be arranged in a cup-shaped element and may be linked in a revolving / hinging manner with the connection body.

IPC Classes  ?

• E21D 11/22 - Clamps or other yieldable means for interconnecting adjacent arch members either rigidly, or allowing arch member parts to slide when subjected to excessive pressure
• E21D 11/24 - Knuckle joints or links between arch members