公开(公告)号：US10851650B2

公开(公告)日：2020-12-01

申请号：US16802281

申请日：2020-02-26

Applicant: BOUYGUES TRAVAUX PUBLICS

Inventor： Antoine Thierry Charles Surmont ,  Quentin Marie Christophe Bonnemaison ,  Pierre-Marie Pascal Tierce

IPC: E21D9/10 ,  E21D9/11

Abstract: The invention relates to a cutting wheel of a tunnel boring machine comprising at least one material discharge opening (5), said discharge opening (5) being delimited by a circumferential wall (10), the cutting wheel (3) being characterized in that it further comprises at least one ultrasonic emitter (6) configured to generate a mechanical vibratory motion in a range of ultrasonic frequencies, said emitter (6) being fixed against the circumferential wall (10) so as to transmit the mechanical vibratory motion to the vibrating circumferential wall (10) and to reduce its coefficient of friction.