Alternating current frequency conversion tyre crane
A tire crane, AC frequency conversion technology, applied to cranes and other directions, can solve the problems of high cost of DC motors, troublesome maintenance, and limited use of the environment
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[0005] The present invention solves the high cost and inconvenient maintenance of DC motors and their speed regulating systems used in the hoisting, turning, driving, and jib luffing of existing port tire cranes, and the inability to use the existing AC power sources in ports, resulting in energy Waste and environmental pollution problems. For this reason, the present invention changes DC generator into AC generator and the DC motor of hoisting, turning, driving and boom luffing becomes AC motor. By adopting the AC motor, the stepless speed regulation can be realized conveniently with the existing frequency conversion technology. The present invention will be further described in conjunction with the above accompanying drawings. , the luffing mechanism 3, the hoisting mechanism 6, the boom 7 and the hook 8 are the same, and the changed part is to change the DC generator driven by the diesel engine into an AC generator to form a diesel AC generator set 1, and the resulting 380 ...
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