EP 0542942 B1 19960313 - DRIVING SHIELD WITH HYDRAULICALLY SUPPORTED FACING, AND A DEVICE FOR PROVIDING TEMPORARY MECHANICAL SUPPORT
Title (en)
DRIVING SHIELD WITH HYDRAULICALLY SUPPORTED FACING, AND A DEVICE FOR PROVIDING TEMPORARY MECHANICAL SUPPORT
Title (de)
VORTRIEBSSCHILD MIT STÜTZUNG DER ORTSBRUST DURCH FLÜSSIGKEIT UND VORRICHTUNG ZUR TEMPORÄREN MECHANISCHEN STÜTZUNG
Title (fr)
BOUCLIER AVEC SOUTENEMENT HYDRAULIQUE DU FRONT DE TAILLE ET DISPOSITIF DE SOUTENEMENT MECANIQUE PROVISOIRE
Publication
Application
Priority
- DE 9200404 W 19920515
- DE 4118907 A 19910608
Abstract (en)
[origin: DE4118907C1] With driving shields having facing which is supported hydraulically while the machine is advancing, it is available to provide temporary mechanical support of the facing in unstable soils if personel are to enter the cutting compartment during a stop in cutting operations, and for this reason the liquid is replaced by compressed air. The invention proposes the provision of mechanical support by the use of plates (11) which are mounted on the rear wall (3) of the cutting compartment (2) from where they can be extended by means of drive units (9) through the gaps (15) between the spokes (6) of the cutter (5) and pushed against the facing (7), and subsequently retracted again.
IPC 1-7
IPC 8 full level
E21D 9/08 (2006.01); E21D 9/087 (2006.01); E21D 9/06 (2006.01)
CPC (source: EP)
E21D 9/065 (2016.01); E21D 9/0879 (2016.01)
Designated contracting state (EPC)
BE CH FR GB IT LI NL
DOCDB simple family (publication)
DE 4118907 C1 19920611; EP 0542942 A1 19930526; EP 0542942 B1 19960313; WO 9222731 A1 19921223
DOCDB simple family (application)
DE 4118907 A 19910608; DE 9200404 W 19920515; EP 92908761 A 19920515