E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/12 (2006.01) F04B 47/02 (2006.01) F04C 15/00 (2006.01) F16D 57/06 (2006.01) F04C 15/04 (2000.01)
Patent
CA 2316792
The invention relates to a drive head comprising a housing (12) with two passages (24, 26), which face away from one another, for a rod assembly (10) and a rotary-driven sleeve (30). Said sleeve surrounds a section of the rod assembly (10) and can be driven by a rotating drive. The rod assembly (10) is connected to the sleeve (30) by a coupling (40). A hydrodynamic recoil brake (60, 70) is provided for controlled reduction of the torsion power accumulated in the rod assembly (10). Said recoil brake in the operating mode conveys a fluid stream through a throttle point (90). In order to detect whether torsion power is accumulated in the rod assembly (10) which may present a potential danger, a pressure sensing device (102, 124, 126) is connected to the throttle point (90) and produces a signal if the pressure of the fluid exceeds a predetermined threshold value.
L'invention concerne un manchon (30) entraînable en rotation, monté dans un boîtier (12) présentant deux passages (24, 26) opposés l'un l'autre, prévus pour une tringlerie (10). Ce manchon entoure une section de la tringlerie (10) et peut être entraîné par un réducteur de rotation. La tringlerie (10) est reliée au manchon par un accouplement (40). Un frein de recul (60, 70) hydrodynamique achemine en marche un courant fluidique par un point d'étranglement (90), afin de diminuer de manière contrôlée l'énergie de torsion accumulée dans la tringlerie (10). Afin d'identifier si de l'énergie de torsion susceptible de constituer un danger potentiel est accumulée dans la tringlerie (10), il est prévu un dispositif de détection de pression (102, 124, 126) en connexion avec le point d'étranglement (90), qui fournit un signal de surveillance lorsque la pression du fluide se situe au-dessus d'une valeur-seuil prédéterminée.
Netzsch-Mohnopumpen Gmbh
Sim & Mcburney
LandOfFree
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