FIELD: transport.
SUBSTANCE: proposed device comprises at least one platform (8) that moves vertically along guides driven by drive system made up of toothed rack and gear wheel at least two drive heads (16), each comprising rotary thrust system with gear wheels engaging with toothed racks, and load bearing structure. Proposed device comprises also central shaft arranged between said two drive heads (16) and supported by load bearing structure and formed by at least one driveshaft articulated with gear motor. Said central shaft and load bearing structure are coupled with said drive heads (16) by coupling elements to allow replacement of central shaft and gear motor.
EFFECT: ease of use in readjustments.
12 cl, 5 dwg
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