Abrégé

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.

Classes IPC  ?

• B08B 3/04 - Nettoyage impliquant le contact avec un liquide

Abrégé

The invention relates to a drilling method that comprises: the step of drilling a hole in the ground, during which a drilling pipe (102), provided at one end thereof with a cutting tool (106) removable from said pipe, is rotated, the cutting tool generating vibrations, followed by: the step of disengaging the cutting tool, during which an object is moved axially in the drilling pipe in the direction of the end in order to urge the cutting tool out of the drilling pipe.

Classes IPC  ?

• E02D 5/34 - Pieux en béton ou analogue coulés en place
• E21B 10/62 - Trépans caractérisés par des parties, p.ex. des éléments coupants, amovibles ou réglables

Abrégé

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.

Classes IPC  ?

• E02F 3/24 - Roues excavatrices; Eléments excavateurs des roues; Entraînement des roues

Abrégé

The invention relates to a method of building a harbor structure suitable for communicating with a stretch of water. The invention is characterized in that the method consists in making, in a piece of ground, at least one curved continuous wall having a closed outline, in digging out the volume defined by the continuous wall, and in providing at least one opening in the continuous wall, said opening making it possible to cause said volume to communicate with the stretch of water.

Classes IPC  ?

• E02D 3/00 - Amélioration ou conservation du sol ou de la roche, p.ex. conservation du permagel
• E02D 23/00 - Caissons; Construction ou mise en place des caissons

Abrégé

mechanical members for constraining the rotor of each hydraulic motor directly in rotation with the transmission assembly corresponding to the cutter drum that is closer to the hydraulic motor.

Classes IPC  ?

• E02F 5/08 - Dragues ou engins de terrassement à usages particuliers pour creuser des tranchées ou fossés avec des roues excavatrices tournant autour d'un axe

Abrégé

The invention relates to a cutter head for an excavator machine having at least one cutter motor, each cutter motor comprising: a fastener plate; a mounting structure comprising an end portion and a mounting assembly; a single hydraulic motor mounted in said mounting assembly and having an outlet shaft presenting two ends, said motor and the end portion of the mounting structure being offset in a direction that is orthogonal to said fastener plate; a plurality of conduits formed in the thickness of the fastener plate; and a plurality of ducts formed in said end portion of the mounting structure to connect the hydraulic motor to said conduits.

Classes IPC  ?

• E02F 5/08 - Dragues ou engins de terrassement à usages particuliers pour creuser des tranchées ou fossés avec des roues excavatrices tournant autour d'un axe

Abrégé

The invention relates to a cutter head for an excavator machine having at least one cutter motor, each cutter motor comprising: a fastener plate (20); a mounting structure (26) comprising an end portion (29) and a mounting assembly (30); a single hydraulic motor (32) mounted in said mounting assembly and having an outlet shaft (40) presenting two ends, said motor and the end portion of the mounting structure being offset in a direction that is orthogonal to said fastener plate (20); a plurality of conduits (50) formed in the thickness of the fastener plate (20); and a plurality of ducts (52) formed in said end portion (29) of the mounting structure to connect the hydraulic motor to said conduits.

Classes IPC  ?

• E02F 5/02 - Dragues ou engins de terrassement à usages particuliers pour creuser des tranchées ou fossés
• E02F 3/00 - Dragues; Engins de terrassement
• E02F 3/24 - Roues excavatrices; Eléments excavateurs des roues; Entraînement des roues
• E02F 9/20 - Entraînements; Dispositifs de commande

Abrégé

Art 17.2

Classes IPC  ?

• E02D 17/13 - Fouilles de fondations; Outillage pour faire ces fouilles
• E02F 3/20 - Dragues; Engins de terrassement entraînés mécaniquement avec des roues excavatrices tournant autour d'un axe et outils qui ne font qu'ameublir la terre

Abrégé

Art 17.2

Classes IPC  ?

• E02D 17/13 - Fouilles de fondations; Outillage pour faire ces fouilles
• E02F 3/20 - Dragues; Engins de terrassement entraînés mécaniquement avec des roues excavatrices tournant autour d'un axe et outils qui ne font qu'ameublir la terre

Abrégé

The invention relates to a method for building a harbour structure (100) communicating with a water body (28). The inventive method consists in building in the ground at least one closed-type continuous curvilinear wall comprising at least one arcuate wall segment whose intrados is oriented to the inside of the structure (100) in such a way that an arching is produced in front of the structure external side, in excavating the volume delimited by the continuous wall, in embodying at least one opening (20) in said continuous wall in such a way that said volume is enabled to communicate with the water body (28).

Classes IPC  ?

• E02B 3/06 - Môles; Jetées; Quais; Murs de quai; Epis; Brise-lames
• B63C 1/08 - Cales sèches

Abrégé

The invention concerns a machine (18) for making a continuous wall in the ground comprising a rear part (28) including means (46) for filling with concrete the portion of trench at the rear of the machine, a front part (26) including cutting means (20) for producing a portion of trench in front of the machine; and means (60, 62) for modifying the distance between said front and rear parts along a horizontal direction. The machine is characterized in that said cutting means comprise vertical guide means (28), at least one rotary cutter (20) whereof the axis of rotation is horizontal and parallel to the width of the trench and means (22) for moving said cutter along the guide means between a lower position corresponding to the base of the trench and a higher position above the trench, said cutter being adapted to cut the ground of the trench and mix it to obtain a material in pasty state.

Classes IPC  ?

• E02D 17/13 - Fouilles de fondations; Outillage pour faire ces fouilles

Abrégé

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.

Classes IPC  ?

• E21B 10/00 - Trépans