Steering device for a vehicle bogey fitted with wheels having pneumatic tires

A steering device for a vehicle bogey fitted with wheels having pneumatic tires that run on a pair of runways forming a track along which the vehicle travels, the track defining a travel axis, said device comprising:

• a steering caster whose mean plane is substantially parallel to planes defined by the wheels of the bogey and which is capable of rotating about a caster axis orthogonal to the caster mean plane and passing through the center of the caster, said caster engaging in a guide groove formed between the runways of the track preceding a track branch point, said caster being carried by a frame of the body via resilient link elements;
• and
• said resilient link elements comprise laminated blocks formed by stacks of alternating bonded layers of rigid material and of flexible material, said resilient link elements disposed on a frame of said vehicle bogey and conferring to the caster and relative to the bogey:
• a first degree of freedom in rotation about a first axis passing through a center of the caster and perpendicular to a plane defined by the track,
• a first degree of freedom in translation parallel to the caster axis,
• resistance to caster motion relative to the bogey in a longitudinal direction of the travel axis, and
• resistance to caster motion relative to the bogey in a direction perpendicular to the plane of the track.