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AssigneesGewerkschaft Eisenhutte Westfalia, Hochtief AG
InventorsDieter Stuckmann, Hans Jutte, Siegmund Babendererde, Reinhard Bokemeyer
Estimating the term…
Tunnel-driving apparatus utilizes a plurality of elongate drive or knife members arranged side-by-side and supported and guided for longitudinal movement on a frame. The members and the frame are advanced in succession during the driving process. Some or all of the drive members are hollow and accommodate telescopically extendible and retractible devices, conveniently of tubular form, used for treating the working face, for example, by conveying fluid to or from the face. The devices each have a series of cam-like projections engageable with spring-biased stops supported on the frame and the drive members. These stops serve to lock the devices in various positions and to automatically extend the devices from the members when the frame is shifted. The stops can be displaced however to generally engage the projections in such manner as to allow or prevent movement of the devices inwardly or outwardly of the drive members.
In an apparatus for use in driving tunnels or the like and which employs a plurality of elongate drive members arranged side-by-side and a frame for supporting the drive members for longitudinal displacement the members and the frame being advanced in succession towards a working face as the driving progresses;
In an apparatus for use in driving tunnels or the like and which employs a drive shield with inner and outer walls advanceable towards a working face as the driving process progresses;
In an apparatus for use in driving tunnels or the like and which employs a drive shield with inner and outer walls advanceable towards a working face as the driving process progresses;
Dependencies are inferred from the claim text.