Soletanche Freyssinet

Compagnie Du Sol

Daniel Perpezat

Laurent Pivert

Sara Cascarino

Régis Bernasinski

Philippe Chagnot

Bertrand Steff De Verninac

Jean-Pierre Hamelin

Fabrice Mathieu

Michel Coudry

Jean-François Mosser

Pascal Rodriguez

Serge Borel

Jean-Marc Sabatie

Jean-Claude Riglet

Christian Auvray

Lewis Stansfield

Laredj Benchikh

Lotfi Beji

Lionel Rouffaud

Régis Bernazinski

Gérard Evers

The invention relates to a method of drilling ground along a drilling direction, the method comprising:

Method of drilling a ground using a robotic arm

A drilling machine () for making an excavation in ground (S) in a vertical drilling direction (F). The drilling machine () includes: a support () having a longitudinal direction (L); a drilling module () provided with cutter members (), the drilling module being movable in translation relative to the support; and a movement device arranged between the support and the drilling module in order to move the drilling module () relative to the support along the longitudinal direction of the support. The machine is characterized by the fact that the movement device includes a damper () for damping the vibration generated by the drilling module while drilling.

Drilling machine

A drilling machine for drilling ground in a vertical direction, the machine including: an anchor module having front and rear faces, the anchor module including an anchor device having front and rear anchor pads that are deployable in a deployment direction, to bear against walls of the excavation to hold the anchor module stationary in the ground. The anchor module further includes: a frame carrying the front and rear anchor pads, the frame supporting the drilling module; and an actuator device to which the front and rear anchor pads are fastened, the actuator device being movable relative to the frame in a movement direction that extends transversely to the longitudinal direction; whereby the assembly constituted by the front anchor pad, the rear anchor pad, and the actuator device is movable in the movement direction relative to the frame and the drilling module.

Drilling machine equipped with an anchoring device allowing the horizontal movement of the drilling module in the anchored position

A drilling machine () for making an excavation in ground in a drilling direction that is substantially vertical, the drilling machine including: an anchor module () having at least one anchor element for preventing the anchor module from moving relative to the walls of the excavation in the drilling direction, the anchor module having a longitudinal direction that is substantially vertical; a drilling module () provided with cutter members, the drilling module being movable in translation relative to the anchor module in the drilling direction; and a movement device () arranged between the anchor module and the drilling module in order to move the drilling module in translation relative to the anchor module in the drilling direction. The machine is suspended from a lift cable () that is fastened to the drilling module ().

The invention relates to the field of excavation systems, and more particularly to excavation systems including tools for excavation by electric pulses. An excavation system of the invention comprises a support frame (), a hydraulic circuit with a pump, and first and second excavation tools. One of said first and second excavation tools is a mechanical excavation tool (') having a hydraulic actuator and a mounting interface with at least one mechanical fastener member and at least one hydraulic coupling in fluid flow communication with said hydraulic actuator, while the other one of said first and second excavation tools is a tool () for excavation by electric pulses, comprising an electricity generator () with a rotary shaft for generating electricity from rotation of the rotary shaft, a hydraulic motor coupled to said rotary shaft to drive rotation of the rotary shaft, and an electronic power module () electrically connected to the electricity generator () in order to be powered by the electricity generator () so as to generate electric pulses of instantaneous power that is higher than an instantaneous power of the electricity generator (), a plurality of electrodes () including at least one electrode () connected to said electronic power module (), the electrodes being arranged on said front face, and a mounting interface () with at least one mechanical fastener member (), and at least one hydraulic coupling () in fluid flow communication with said hydraulic motor (). Each of the mounting interfaces of the first and second excavation tools is suitable for releasably mounting the corresponding excavation tool in alternation under the support frame () of the excavation system, with the corresponding hydraulic coupling in fluid flow communication with said hydraulic circuit of the excavation assembly.

Excavation system with interchangeable tools

The invention relates to a drilling machine () for making an excavation in ground in a drilling direction, said drilling machine comprising: an anchor module () having an anchor device for preventing the anchor module from moving in the drilling direction relative to the ground by bearing against one of the walls of the excavation; The drilling module is also hinged relative to the anchor module, and the drilling machine comprises first path correction means () for causing the drilling module to pivot relative to the anchor module about a pivot axis (X) perpendicular to the drilling direction.

The invention relates to a concreting installation for concreting an excavation. The installation includes a concreting column having a top end arranged to be open in order to be at atmospheric pressure, and at least one controlled retention device situated at a distance from the open top end of the concreting column and adapted, in at least one configuration, to retain a volume of concrete inside the column. The invention also relates to a method of concreting an excavation.

Concreting facility and corresponding concreting method

A device () for treating a portion of soil comprises a rotary shaft (), at least one deployable mixer tool () secured to the rotary shaft (), and a longitudinal pipe () for injecting a fluid in the proximity of the mixer tool (). According to the invention, the treatment device () further includes a boring tool () situated at the bottom end of the shaft (), an outer tubular element () extending parallel to the rotary shaft (), the rotary shaft () being arranged inside said tubular element (), and a coupling system () between the rotary shaft () and the tubular element (). In a first configuration, the coupling system () is suitable for constraining the tubular element () and the rotary shaft () to move together in rotation about the main axis (X), in at least one direction of rotation, and for constraining the tubular element () and the rotary shaft () to move together in translation along the main axis (X), at least in the downstream direction. These movements in rotation and translation can be released in a second configuration of the coupling system ().

Mixing tool for treating a portion of soil

An excavator machine that includes components such as: a suspended casing having a top end and a bottom end; at least one cable that extends above the casing, where the cable is under tension and has a bottom end that is fastened to the top end of the casing; and a cutter device that is arranged at the bottom end of the casing. The excavator machine further includes: a carriage that is mounted to slide along the cable; a device for moving the carriage along the cable; and a locator device for determining the three-dimensional position of the carriage.

Method for determining the position of a cutting device in the ground using a mobile carriage

The invention relates to a vibrator device for a vibratory compacting machine, said device comprising: a tubular body extending longitudinally and having a bottom end; at least one first hydraulic motor disposed in the tubular body and comprising a rotor and a stator; an eccentric member arranged inside the tubular body between the bottom end and the first hydraulic motor, said eccentric member being adapted to be rotated by the rotor of the first hydraulic motor so as to generate vibration. The invention is characterized in that the stator of the first hydraulic motor is constituted by the tubular body.

Hydraulically-driven vibrating device for a vibratory compacting machine

The invention relates to a machine for scraping away sediment or the like deposited on the bottom of a gallery. The machine comprises: a first movable body suitable for moving over the bottom portion of the wall of the gallery; first movement means for moving said first movable body; scraper means for detaching sediment from the bottom; first buffer storage means mounted on said first movable body; first transfer means for transferring detached sediment into said first storage means; second transfer means for transferring sediment stored in said first buffer storage means to the outside of said first movable body; a second movable body; second movement means; and second storage means mounted on said second movable body to collect the transferred sediment.

Scraper machine

The invention relates to a drilling tool comprising: two pairs of rotary drums in axial alignment on parallel axes; a motor mechanism for driving rotation of the drums; a support element; and a support structure on which the drums are mounted to rotate and serving to connect the drums to the support element; the tool being characterized in that the motor mechanism is mounted inside the drums and in that the support structure comprises a plate forming bearings at its bottom ends for the drums; and a mounting pad for fastening to the support element.

Drilling tool

The invention relates to an auger for making a borehole that presents in its inside wall a groove that is substantially helical, said auger comprising: a hollow core provided with an outer helical blade; a movable cutter gouge suitable for taking up an active position in which the gouge projects outside the volume defined by the periphery of the blade, and a retracted position in which it is placed inside said volume; and means for displacing said gouge from its retracted position to its active position and comprising an additional member mounted to move in said core in translation and/or in rotation, and placed at the bottom end of said core, together with control means for causing said gouge to be displaced from its retracted position to its active position in response to said additional member moving relative to at least the bottom portion of said hollow core.

Auger with a movable gouge for making a borehole

The present invention relates to a machine for digging a trench and making a wall in said trench, the machine being suitable for advancing along a path and having rear and front portions relative to the direction of advance of the machine, together with excavator means disposed in the front portion of the machine and defining a substantially vertical cutting front; wall-forming means situated in the rear portion of the machine; and propulsion means suitable for causing the machine to advance along said path. The machine also has a central portion, controllable brake means for slowing advance or blocking at least one portion of the machine, and controllable connection and disconnection means for connecting and disconnecting the central portion respectively with the front and rear portions of the machine, thereby enabling the type of excavator means and the type of wall-forming means to be changed.

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Rueil Malmaison, France

Daniel Perpezat