Semi-automatic turnover device for engineering van hopper production and turnover control method of semi-automatic turnover device

The invention belongs to the field of engineering vehicle hopper production equipment, and provides a semi-automatic turnover device for engineering vehicle hopper production and a control turnover method.The semi-automatic turnover device comprises a rack, a track beam and a crown block, the crown block comprises an unwinding mechanism, a lifting appliance, a cable and a controller, and the lifting appliance comprises a main lifting rope, a double-hole connector, an auxiliary lifting rope, a lifting beam and a double-rod type electric push rod; a pair of winches used for being connected with an engineering truck hopper is arranged on the portion, on the moving front side of the crown block, of the rack, a supporting assembly is arranged on the inner side of the rack and comprises a front supporting base, a rear supporting base and a V-shaped supporting face, sliding supporting light plates are arranged in the opposite directions of the front supporting base and the rear supporting base, and a buffering suppo