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Patent Searching and Data


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 (Burgweg 34, Hagen, 58119, DE)
BEHNERT, Holger (Schwartnerstraße 1c, Wuppertal, 42281, DE)
REINELT, Werner (Am Hang 3, Bochum, 44797, DE)
Application Number:
IB2010/054340
Publication Date:
July 21, 2011
Filing Date:
September 27, 2010
Export Citation:
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Assignee:
BUCYRUS EUROPE GMBH (Industriestraße 1, Lünen, 44534, DE)
DANNEHL, Friedrich, Wilhelm (Burgweg 34, Hagen, 58119, DE)
BEHNERT, Holger (Schwartnerstraße 1c, Wuppertal, 42281, DE)
REINELT, Werner (Am Hang 3, Bochum, 44797, DE)
International Classes:
E21D23/04; E21D23/08; F16B15/00
Foreign References:
DE19633847C11997-07-24
US5390586A1995-02-21
DE20316659U12004-01-15
DE4401240A11995-07-20
Attorney, Agent or Firm:
ALTHAUS, Arndt et al. (Patentanwälte Buschhoff Hennicke Althaus, Postfach 19 04 08, Köln, 50501, DE)
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