This technology relates to a gantry crane, and more specifically, to a gantry crane structure that allows for easy adjustment of the carrier's orientation and position while maintaining balance during lifting and lowering operations. The gantry crane of the present invention includes a horizontal support formed at the top of the main body, a turntable unit connected to the front of the horizontal support via wires, vertical supports connected vertically downward to the left and right sides of the rear of the horizontal support, and a lower moving unit connected to the bottom of the left and right vertical supports. The horizontal support is designed for the vertical movement of the carrier via the turntable unit and includes a wire lifting drive unit. This wire lifting drive unit consists of a vertical wire rotation drive that winds and unwinds wires through rotation, multiple vertical wire guide units composed of guide bodies and wire wheels to manage wire direction and prevent detachment, and multiple vertical wires. The turntable unit is designed for the left and right rotation of the carrier and includes a hollow circular turn frame at the center, an upper table containing rotation drive means for the horizontal rotation of the lower table and wire connection parts, and a lower table connected to the turn frame that includes a turntable and carrier connection means for rotating around the center of the turn frame. The lower moving unit is for moving the crane body and includes a lower moving body connected vertically to the bottom of the vertical supports with multiple drive rollers at the bottom, guide rails for guiding the drive rollers forward and backward, and a front-rear drive unit that provides power to the lower moving body. The gantry crane of the present invention allows for free horizontal rotation of the carrier and maintains excellent balance in all directions during wire operation, enabling the carrier to be placed accurately in the desired position and orientation.
Existing solutions in this field have faced structural and functional limitations that required improvement.
This technology can be applied to the gantry crane industry to enhance performance and efficiency.
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