Safety device for a stretching machine of the brake type comprising a negative brake which can be selectively activated and de-activated so as to constrain and respectively allow the rotation of at least one capstan which supports cables, a pumping device connected to the negative brake and configured to de-activate the latter during the normal use of the stretching machine, putting a working fluid under pressure, pressure energy accumulation means of said working fluid, and a maximum pressure valve configured to regulate the working pressure of a hydraulic motor for controlling the twisting torque applied to the capstan. The device also comprises a motorized drive device connected to the maximum pressure valve and provided to selectively regulate the action of the latter on the hydraulic motor, even in a breakdown condition of at least the pumping device, in order to maintain the working pressure of the hydraulic motor and to maintain the negative brake de-activated by the intervention of the pressure energy accumulation means.
SAFETY PLANT FOR A CABLE STRETCHING MACHINE, CORRESPONDING METHOD AND STRETCHING MACHINE USING SAID PLANT
SICHERHEITSANLAGE FÜR EINE KABELSTRECKMASCHINE, ENTSPRECHENDES VERFAHREN UND STRECKMASCHINE MIT DIESER ANLAGE
ÉQUIPEMENT DE SÉCURITÉ POUR MACHINE À ÉTIRER LES CÂBLES, PROCÉDÉ CORRESPONDANT ET MACHINE À ÉTIRER UTILISANT L'ÉQUIPEMENT
2017-02-01
Patent
Electronic Resource
English
IPC: | H02G INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES , Verlegen oder Installieren elektrischer Kabel oder Leitungen, Verlegen oder Installieren kombinierter optischer und elektrischer Kabel oder Leitungen / B60M Speiseleitungen oder Vorrichtungen am Gleis für elektrisch angetriebene Fahrzeuge , POWER SUPPLY LINES, OR DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES / F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen |
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