The invention relates to a tire-type gantry
container crane with power supplied by a speed-control fuel-saving diesel generating set, which is characterized in that the crane comprises an electrical
system; a three-phase
AC power source generated by the diesel generating set capable of operating at variable speed, together with a speed control device thereof, is converted into a DC power source via a power electronic reversible rectifying device used for controlling the generated
electricity quantity of the diesel generating set, and then
direct current is directly supplied to frequency
converters driving mechanisms to operate; the DC power source is converted into an
AC power source with adjustable frequency so as to be used for driving a hoisting mechanism, a
cart mechanism and a trolley mechanism; a super
capacitor set is connected with a DC side
bus in parallel; the total
capacitance of the super
capacitor set is below 10
farad; and a central control link is formed by an intelligent
industrial control system and is used for detecting the current and
voltage states on the
DC bus so as to calculate the power situation of the
DC bus, and then the power situation is used as the speed control basis of the diesel generating set so as to control the rotating speed and torque of a generator. The
container crane has the advantages of low cost,
energy conservation and
environmental protection.