Gantry crane is a deformation of an overhead crane. In the port, it is mainly used for the loading and unloading of outdoor cargo yards, material yards and bulk cargo. Its metal structure is like a door-shaped frame, and two feet are installed under the bearing main beam, which can walk directly on the track on the ground, and the two ends of the main beam can have overhanging Konsol kirişleri . portal vinçleri yüksek saha kullanımı, büyük çalışma aralığı, geniş uyarlanabilirlik ve güçlü çok yönlülük özelliklerine sahiptir ve port yük bahçelerinde yaygın olarak kullanılır .