[background technology]
The planer-type container crane power resources mode that current harbour enterprise uses has two kinds of forms: 1) adopt civil power, diesel generating set to exchange supply power mode, namely in harbour rule stockyard, overhead/lower frame trolley is set up, by trolley in stockyard, power with civil power; After leaving stockyard, by starting diesel generating set generating, crane is powered; 2) diesel generating set or hybrid power system is adopted to power completely.Along with the day by day exhaustion of world energy sources, and the intensification day by day that the whole world is paid close attention to environmental problem, the tyre-type gantry formula container crane of conventional belt diesel generating set or hybrid power system pollutes greatly, energy consumption is high; After oil changes electricity use trolley, flexibility is restricted, and infrastructure construction cost, maintenance cost are high, and thoroughly cannot reject diesel generating set, cannot accomplish zero discharge, no pollution.
[summary of the invention]
For above-mentioned defect of the prior art, the invention discloses a kind of pure power-driven power system for gantry crane, adopt battery-powered, accomplished no pollution, zero discharge, make the use flexibility of gantry crane high simultaneously.
Technical scheme of the present invention is as follows:
A kind of pure power-driven power system for gantry crane, comprise system controller, charging device that electricity getting device, battery pack, two-way DC/DC converter, auxiliary DC/AC converter, charge controller, two-way DC/DC converter controller, the power supervisor be connected with described battery pack, power supply equalization Qi Jiyu city are electrically connected, described charge controller, two-way DC/DC converter controller, power supervisor are connected with the control end of power supply equalization device with described system controller; The charging end of described battery pack can be dynamically connected certainly by electricity getting device and described charging device, the feeder ear of battery pack is connected with the drive unit of crane operating mechanism by two-way DC/DC converter, two-way DC/AC converter, and the feeder ear of battery pack assists power consumption equipment to be connected by auxiliary DC/AC converter with crane.
The pure power-driven power system of gantry crane disclosed by the invention adopts battery-powered, has accomplished no pollution, zero discharge, has avoided the restriction of trolley power transmitting device to crane flexibility simultaneously, and the expense decreasing relevant urban infrastructure drops into; Charging device can be set up in stockyard periphery, and charging fast, does not affect production operation, can complete charging, contribute to enhancing productivity at changing shifts, meal time.
[embodiment]
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.
As shown in Figure 1, pure power-driven power system for gantry crane of the present invention, comprise system controller 1, electricity getting device 8, battery pack 7, two-way DC/DC converter 9, auxiliary DC/AC converter 11, charge controller 4, two-way DC/DC converter controller 10, the power supervisor 5 be connected with described battery pack, power supply equalization device 3 and the charging device 6 be electrically connected with city, described charge controller 4, two-way DC/DC converter controller 10, power supervisor 5 is connected with the control end of power supply equalization device 3 with described system controller 1, system controller 1 and power supervisor 5, the energy management that power supply equalization device 3 and charge controller 4 realize a whole set of pure power-driven power system controls, the charging end of described battery pack 7 can be dynamically connected certainly by electricity getting device 8 and described charging device 6, the feeder ear of battery pack 7 is connected with the drive unit of the operating mechanism 13 of crane, for the operating mechanism of crane powers by two-way DC/DC converter 9, two-way DC/AC converter 12, the feeder ear of battery pack 7 assists power consumption equipment to be connected with crane, for supplementary AC equipment is powered by auxiliary DC/AC converter 11,
The working condition of the pure power-driven power system for gantry crane of the present invention is as follows: under shutdown charged state, be connected, carry out quick charge at charging station by electricity getting device 8 with charging device 6; Under operating discharge state, the operating mechanism 13 that battery pack 7 is crane by two-way DC/DC converter 9, two-way DC/AC converter 12 powers; Power by adopting battery pack 7, no pollution, zero discharge are accomplished, avoid the restriction of trolley power transmitting device to crane flexibility simultaneously, charging device 6 can be set up in stockyard periphery, charging fast, do not affect production operation, charging can be completed at the changing shifts of workman, meal time, contribute to enhancing productivity;
Simultaneously, described battery pack 7 is by two-way DC/DC converter 9, two-way DC/AC converter 12 is connected with operating mechanism 13, described two-way DC/DC converter controller 10 is connected with described system controller 1, the operating mechanism 13 of crane is when braking, its braking energy is converted into after electric energy by two-way DC/AC converter 12, the electric energy being applicable to charging to battery pack 7 is transformed to after two-way DC/DC converter 9, be stored in battery pack 7, thus achieve the recovery of operating mechanism 13 braking energy, simultaneously, also eliminate absorption operating mechanism 13 in configuration aspects and brake brake resistance used, simplify the structure,
Preferably, described system controller 1, by CAN communication modes and crane PLC 2 and described charge controller 4, two-way DC/DC converter controller 10, power supervisor 5 and power supply equalization device 3 communication, makes data communication have good reliability, real-time and flexibility;
Preferably, described electricity getting device 8 is power taking arm or power taking bow, is convenient to realize can certainly be dynamically connected between electricity getting device 8 and charging device 6.
Above-described embodiment of the present invention, does not form limiting the scope of the present invention.Any amendment done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within claims of the present invention.