Title:
ADVANCING ASSEMBLY AND POWERED SHIELD SUPPORT HEREWITH
Document Type and Number:
WIPO Patent Application WO/2011/039693
Kind Code:
A3
Abstract:
The invention relates to an advancing assembly for underground powered shield support, comprising at least one floor skid (7) for supporting the powered shield support, an advancing beam (9) and a substantially perpendicularly arranged lift cylinder for lifting the floor skid (7) relative to the advancing beam (9) during an advancing movement. The lift cylinder has a cylinder foot supported above the advancing beam (9) and a cylinder head buttressed on a bridge (16) and hydraulically displaceable relative to the cylinder foot. In order to improve a powered shield support and in particular the advancing assembly of a powered shield support, the lift cylinder consists of a double lift cylinder (10) having a first cylinder stage (11), comprising the cylinder head, and a second cylinder stage (12), wherein a compression spring is arranged between the cylinder stages (11; 12).
Inventors:
DANNEHL FRIEDRICH WILHELM (DE)
BEHNERT HOLGER (DE)
REINELT WERNER (DE)
BEHNERT HOLGER (DE)
REINELT WERNER (DE)
Application Number:
PCT/IB2010/054340
Publication Date:
July 21, 2011
Filing Date:
September 27, 2010
Export Citation:
Assignee:
BUCYRUS EUROPE GMBH (DE)
DANNEHL FRIEDRICH WILHELM (DE)
BEHNERT HOLGER (DE)
REINELT WERNER (DE)
DANNEHL FRIEDRICH WILHELM (DE)
BEHNERT HOLGER (DE)
REINELT WERNER (DE)
International Classes:
E21D23/08; E21D23/04; F16B15/00
Foreign References:
| DE19633847C1 | 1997-07-24 | |||
| US5390586A | 1995-02-21 | |||
| DE20316659U1 | 2004-01-15 | |||
| DE4401240A1 | 1995-07-20 |
Attorney, Agent or Firm:
ALTHAUS, Arndt et al. (Postfach 19 04 08, Köln, DE)
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