Automatic control system for a concrete distributing pipe in...

Details Automatic control system for a concrete distributing pipe in... Automatic control system for a concrete distributing pipe in...

E - Fixed Constructions

21

D

E21D 11/10 (2006.01) G05B 11/30 (2006.01)

Patent

CA 2306956

System for performing automatic movement of the end pipe of the arm supplying fluid concrete mixes and air (shotcrete) in machines for lining tunnel vaults and the like, in which electrohydraulic actuators for the movements of the pipe are controlled by sending to them electrical commands in the form of square-wave signals with a variable frequency and in appropriate sequences, a signal being provided for each type of desired movement.

Cette invention a trait à un système permettant un mouvement automatique du conduit d'extrémité du bras alimentant en mélanges de béton fluide et d'air (gunite) des machines de revêtement de voûtes en berceau de tunnels et analogue. Dans ce système, les actionneurs électro-hydrauliques commandant les mouvements du conduit sont commandés par des instructions électriques sous forme de signaux carrés à fréquence variable et selon des séquences adaptées, un type de signal pouvant être utilisé pour chaque type de mouvement souhaité.

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