Quick-change automatic control system of underground quick-change vehicle

The utility model provides a quick-change automatic control system of an underground quick-change vehicle. The device comprises a roll-over stand and a working chassis, the working chassis is positioned above the roll-over stand; a hook is arranged at the rear end of the turnover frame; a hook oil cylinder is arranged on the hook; a locking oil cylinder is arranged in front of the overturning frame; a lifting oil cylinder is arranged below the front part of the turnover frame; a stretching oil cylinder is arranged on the roll-over stand; a program controller, a display and an electric controlhandle are arranged; chassis fixing holes are formed in the two sides of the locking oil cylinder. The chassis fixing hole is connected with the working chassis through a locking oil cylinder; a magnetic proximity switch A and a magnetic proximity switch B are respectively arranged on the chassis fixing hole and a cross beam on the working chassis; the lifting oil cylinder is provided with a lifting proportional valve, th