Intelligent mobile hydraulic lifting trolley is applied to the core installation (core piercing) of the petroleum refining heat exchanger, using the 300T hydraulic trolley cap to lift and translate the core. The hydraulic main top is a double-acting mechanical self-locking cap, firstly, the core is lifted to a certain height, to ensure that the core and the shell center are consistent, lock the main top. Pan the core, start the trolley movement function (both front and rear can be moved), slowly feed the core into the shell, waiting for further installation by the customer. The intelligent mobile hydraulic lifting trolley is divided into two parts: hydraulic bearing control unit and driving walking control unit, which integrates electrical, hydraulic and mechanical automation hydraulic equipment. Working through the computer's control bearing system and driving walking system, with synchronous lifting, self-walking, synchronous walking and other functions, it is a PLC distributed control system solution based on fieldbus technology.