Device for admitting pressure water to spray nozzles arranged on self-advancing support assemblies

In the device according to the invention for admitting pressure water to spray nozzles arranged on self-advancing support assemblies, a stop valve is arranged in the feed line to the ram space hydraulically loaded during the advancing action of the support assembly, which stop valve can be released...

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Bibliographic Details
Main Authors PETERS,BERND, WEIRICH,WALTER
Format Patent
LanguageEnglish
German
Published 05.12.1985
Edition4
Subjects
EARTH DRILLING
FIXED CONSTRUCTIONS
GALLERIES
LARGE UNDERGROUND CHAMBERS
MINING
SHAFTS
TUNNELS
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Summary:In the device according to the invention for admitting pressure water to spray nozzles arranged on self-advancing support assemblies, a stop valve is arranged in the feed line to the ram space hydraulically loaded during the advancing action of the support assembly, which stop valve can be released by the pressure in the pressure-water feed line to the spray nozzles and blocks the inflow to the ram when the pressure-water feed line to the spray nozzles is pressureless. This ensures that advancing of the support is only possible when the spraying unit is switched on. The stop valve preferably consists of a hydraulically releasable non-return valve in whose energizing line a pilot valve is arranged which can be opened in a controlled manner by the pressure in the pressure-water feed line.
Bibliography:Application Number: DE19843420885