Inter-turbine casing comprising mounted splitter blades

An inter-turbine casing for a turbomachine comprising:

• an inner shroud, an outer shroud and a plurality of arms extending radially between the inner shroud and the outer shroud, the inner shroud and the outer shroud extending coaxially around a longitudinal axis;
• a plurality of splitter blades positioned circumferentially between the arms, each splitter blade comprising a root provided with an inner platform fixed to the inner shroud and a head provided with an outer platform fixed to the outer shroud;
• wherein the inner shroud comprises at least one inner groove configured to slidingly receive one or more inner platforms and
• the outer shroud comprises at least one outer groove configured to slidingly receive one or more outer platforms;
• the inner platform and the outer platform of the splitter blades each have an upstream face and a downstream face and each comprise two studs, wherein a first stud of the two studs extends from the upstream face of the inner platform and of the outer platform and a second stud of the two studs extends from the downstream face of the inner platform and of the outer platform;
• and
• wherein each inner groove and each outer groove has an upstream border and a downstream border, a rib being formed in each upstream border and in each downstream border and being configured to receive the first stud or the second stud, respectively, to radially block the splitter blades in the inner grooves and in the outer grooves.