Framatome Gmbh

Framatone

Alain Delevallee

Olivier Carra

Francis Lagarrigue

The invention concerns a vehicle (1) with inclinable tracks in which an inclination movement of a propulsion unit (3) about its articulation axis (5) is assisted by reverse propulsion movement of the track (4) of the propulsion unit. The invention is applicable to the nuclear industry in particular.

Self-traveling robotic vehicle with inclinable propulsion units

An intervention vehicle of the type comprising propulsion units (4) that are tiltable by rotation about transverse carrying shafts (66), comprising advance and tilting driven shafts (8, 9) disposed coaxially inside each carrying shaft (66) and transmitting their motion via linear transmission elements (84, 90, 98) inside each propulsion unit for driving advance motion and tilting motion, and also constituting a speed reducer for the tilting motion. The invention is particularly applicable to the nuclear industry.

Robotic vehicle having tiltable propulsion units

A vehicle for interventions, in particular in buildings, characterized by the fact that it includes a scissor-like chain transmission (22, 40-24, 42) for transmitting the motion required between motors (10, 12) carried by the body of the vehicle (2) and propulsion units (4) having limited mobility relative to the body. The invention is particularly intended for the nuclear industry.

Transmission for a robotic vehicle

A spacer sleeve is installed within an instrumentation tube of a nuclear fuel assembly comprising two end nozzles connected by tie rods and a plurality of fuel rod supporting grids distributed at axial intervals along the tie rods. The instrumentation tube has a first end received in an initially blind bore formed in one of the end nozzles and communicating with the outside by a coolant restriction. An opening having a diameter equal to that of said sleeve and connected to the bore by a shoulder is machined in the end nozzles; a sleeve is inserted into the instrumentation tube through the opening; the sleeve is centered within said instrumentation tube by locally expanding it into contact with the instrumentation tube at a plurality of locations each in one of said intervals; a cap is introduced into the sleeve having a radial end collar dimensioned for abutting connection against said sleeve, a deformable lateral skirt and a bottom wall formed with a coolant flow orifice of predetermined cross-sectional area; and the sleeve is secured within the nozzle by simultaneously expanding radially the skirt and the sleeve against the shoulder.

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Ecully, France

Alain Delevallee