THE KINEMATICAL SCHEMES SYSTEMATISATION OF SOME COMPLEX PLANETARY MECHANISMS USED AT THE HYDRO-MECHANICAL TRANSMISSIONS CONSTRUCTION

摘要

Lately, in the wide world, the hydro-mechanical transmission's construction knows a stressed development because by the using of the process micro-computers, the efficiencies of these transmissions are closer than the efficiencies realised by the classical transmissions (with, fixed shafts). It comes out that exists a relative limited number of the structural schemes that are patented and which are used to produce a great number of constructive types of such transmissions. From this reality, in this paper, it is presented a systematisation of some types of the complex planetary mechanisms with variable structure. These are used to realise of the hydro-mechanical transmissions that equip the vehicles made in Europe, America and Asia. The criterion used to realise this systematisation is: the realised velocity steps, the structural complexity and the number of the command elements used for the mono-mobile structure achievement.