Power automatic conversion connection system of tyre crane with double power supplies

Abstract

The invention discloses a power automatic conversion connection system of a tyre crane with double power supplies. The system comprises a sliding contact line and a current collection trolley. The sliding contact line is installed on a sliding contact line bracket. Guide rails are installed on the sliding contact line bracket. Travelling wheels are installed on support arms of the current collection trolley. After the current collection trolley is installed on the sliding contact line bracket, the travelling wheels travel on the guide rails. A connection mechanism is installed on the tyre crane. The connection mechanism comprises a vertical moving mechanism, a horizontal stretching mechanism and a hanging device. A guide plate is installed on the sliding contact line bracket above the guide rails. Guide wheels are installed on the ends of the support arms of the current collection trolley. When the current collection trolley moves towards the sliding contact line bracket and is in contact with the guide plate, the guide wheels just enable the travelling wheels to be located right above the guide rails. According to the system disclosed by the invention, the self-supported power of the tyre crane and the power of a commercial power grid can be converted automatically without manual plugging; and the system is safe and efficient and facilitates the transferring work of the tyre crane.

Description

technical field [0001] The invention belongs to the technical field of a power supply automatic conversion connection device, and in particular relates to a connection system that provides automatic power source conversion for a dual power supply tire crane during field transfer operations. Background technique [0002] At present, most of the power supply systems of rubber-tyred gantry cranes (also known as tire cranes) widely used in ports and wharves use diesel generator sets to provide working power. Its working principle is: when the diesel generator set is started and running, it outputs three-phase AC 460V power supply, on the one hand, it provides power loads inside the tire crane including frequency converters for lifting, walking, and steering, so as to control the lifting mechanism of the tire crane, The traveling mechanism of the trolley, the luffing mechanism of the trolley and the steering mechanism of the trolley are in operation; on the other hand, the AC 460...

AI Technical Summary

Problems solved by technology

This method of manual plugging and unplugging to achieve dual power supply conversion not only has certain potential safety hazards, but also has a high labor intensity and low efficiency for workers.

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