ELECTRIC WHEELCHAIR USED AS STAIRLIFT PROVIDED WITH A ROTARY DISC REPLACING THE SUPPORTING RAILS AND WITH RACK, MEANT FOR PERSONS WITH LOCOMOTOR DISABILITIES
The invention relates to an electric wheelchair, used as stairlift, provided with a rotary disc, meant for persons with locomotor disabilities. According to the invention, the wheelchair is provided with three wheels, namely a right and a left traction wheel (1 and 1), and with a supporting wheel (2), respectively, each wheel (1, 1 and 2) being provided with a traction motor (Mt1, Mt1 and Mt2), a first right motor and second left motor, respectively, and a gear wheel (5) is equipped with a servomotor (SM5) which receives the command to rotate the said gear wheel (5) in one way or the other, depending on the deflection of an axis (O1-O3) of the wheelchair in relation to a vertical axis, determined by a gyroscope (8) consisting of a disc rotated by a servomotor (SM8), so that, during the operation, the axis of the ergonomic chair is kept in vertical position, because the deflection between the wheelchair axis and the chair axis is measured by a transducer (T) which emits a control signal to the servomotor (SM5) in order to superpose the two axes, thus preventing the overturning of the wheelchair, as well as keeping a friction force (Ff), which allows the wheelchair to move independently of the slope given by the stair inclination.Invenţia se referă la un cărucior electric, folosit drept lift de trepte, prevăzut cu un disc rotitor, destinat persoanelor cu dizabilităţi locomotorii. Căruciorul conform invenţiei este prevăzut cu trei roţi (1 şi 1), dreapta şi, respectiv, stânga, de tracţiune, şi, respectiv, cu o roată (2) ajutătoare, toate roţile (1, 1 şi 2) fiind prevăzute cu câte un motor (Mt1, Mt1 şi Mt2), primul dreapta şi, respectiv, al doilea stânga, de tracţiune, iar o roată (5) dinţată este echipată cu un servomotor (SM5) care primeşte comanda de a roti această roată (5) dinţată într-un sens sau altul, în funcţie de devierea unei axe (O1-O3) a căruciorului faţă de o axă verticală determinată de un giroscop (8) care constă într-un disc rotit de un servomotor (SM8),
