The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 03, 2023
Filed:
Mar. 19, 2019
Soilmec S.p.a., Cesena, IT;
SOILMEC S.P.A., Cesena, IT;
Abstract
Drilling machine () comprising: a supporting structure (); a drilling string (); a drilling head (); a flexible tensile element (); a moving device (), mechanically connected to the supporting structure () and mechanically associated with the flexible tensile element () to hold and move the drilling string (); at least one first electric motor () configured to, in a first operating mode, actuate the moving device () so as to lift the drilling string (), and configured to, in a second operating mode, apply a braking mechanical power on the moving device () so as to brake in a controlled manner the lowering of the drilling string () to reach and maintain a desired controlled lowering speed (Vd), the at least one first electric motor () being also configured to produce an electric power (Pmot); a first bidirectional electric power converter device () configured to convert the electric power produced (Pmot) into converted electric power (Pregen); an electric energy transmission network () arranged to transmit the converted electric power (Pregen); an electric power use unit () arranged to receive said converted electric power (Pregen), the electric power use unit () comprising at least one first electric energy storage system () and a prime motor () configured to generate electric power; a control group () configured to send at least one first electric control signal representative of the value of the desired controlled lowering speed (Vd); a control system () configured to generate second electric control signals based on such a first electric control signal and send the second electric control signals to the first bidirectional electric power converter device () which is configured to control the operation of the first electric motor () based on said second electric control signals received from the control system (), so that the drilling string () carries out the lowering at the desired controlled lowering speed (Vd), the control system () being of the distributed and real-time type.