Device for opening and supporting a headway
OwnerHeinz-Theo Walbrohlinventor
Life of this patent
Estimating the term…
Abstract
A device for opening and supporting a headway in closed or open excavations comprises an envelope composed of blade- carrying heads (24) which can be driven individually or in groups, each connected to an end part. At least several end parts are designed as internal formwork sections (12) and their top surface facing the ground or soil (26) slopes backward from the corresponding top surface (38) of the corresponding blade-carrying head. The blade-carrying head (24) and the end parts are supported and guided on supporting frames (16) of a walking frame (34). A filling tube (42) for introducing supporting material (44) and binders is arranged in the region between the blade-carrying head (24) and the sections (12) of the internal casing.
Claims10
A device for opening and supporting a headway in an excavation of rock or soil by means of a blade envelope comprising advanceable blade heads (24;
- 70;
- 86;
- 96), each said blade head (24;
- 70;
- 86;
- 96) having a top side 38, said blade heads (24;
- 70;
- 86;
- 96) each being connected to a top side (26) of an internal formwork section (12;
- 56;
- 72;
- 88;
- 104), said top side (26) of said internal formwork section (12;
- 56;
- 72;
- 88;
- 104) being directed toward the rock or soil;
- and being set back with respect to the corresponding top side (38) of the associated blade head (24;
- 70;
- 86;
- 96), the blade heads (24;
- 70;
- 86;
- 96) being guided and supported on supporting frames (16;
- 106) of a walking frame (34) and the formwork sections (12;
- 56;
- 72;
- 88;
- 104) being guided and supported on the supporting frames (16;
- 106) and means 42 for introducing self-hardening material (52) or supporting material (44) and binder being provided between at least one blade head (24;
- 70;
- 86;
- 96) and the respective internal formwork section (12;
- 56;
- 72;
- 88;
- 104), characterized by the fact that the top side (26) of the internal formwork sections (12;
- 56;
- 72;
- 84;
- 104) is developed adjustably with respect to its distance from the rock or soil.
Dependencies are inferred from the claim text.