FIELD: transport.
SUBSTANCE: proposed jack comprises lifting hydraulic mechanism 1, 2, hydraulic pump 12, oil tank 9, oil line and motor 14. Note that lifting hydraulic mechanism, hydraulic pump and oil tank are communicated by oil line. Drive mechanism is arranged between hydraulic pump and motor. Check valve 12 is arranged between oil tank and hydraulic pump. Hydraulic pump 12 is arranged on one side of motor 14 while air pump 15 is located on motor opposite side. Drive mechanism is integrated with hydraulic pump 15 and motor 14. Air pump 15 is communicated with air pipe 15. Motor 14 equipped with drive to control connection between motor and air and hydraulic pumps 15, 12, respectively. Air pump 15 is connected to connection base of another air pump while hydraulic pump 12 is connected to connection base of third hydraulic pump. Note here that both said connection bases are interconnected by connection bar while motor 14 is connected thereto to displace there along.
EFFECT: expanded operating performances.
9 cl, 8 dwg
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