Types Of Gantry Cranes

1. Ordinary gantry crane: This type of crane is the most widely used, and can handle various pieces and bulk materials, with a lifting capacity of less than 100 tons and a span of 4 to 35 meters. Ordinary gantry cranes with grabs have a higher level of work.
2. Gantry cranes for hydropower stations: mainly used for lifting and opening and closing gates, and can also be used for installation operations. The lifting capacity is 80-500 tons, the span is small, 8-16 meters; the lifting speed is low, 1-5 meters per minute. Although this kind of crane is not frequently lifted, once it is used, the work is very heavy, so the work level should be raised appropriately.
3. Shipbuilding gantry crane: it is used to assemble the hull on the berth, and there are always two lifting trolleys: one has two main hooks, running on the track of the upper flange of the bridge; the other has a main hook and an auxiliary hook, Runs on the track of the lower flange of the bridge to turn over and lift large hull sections. The lifting capacity is generally 100-1500 tons; the span is up to 185 meters; the lifting speed is 2-15 meters per minute, and there is also a fretting speed of 0.1-0.5 meters per minute.
4. Container gantry cranes: used in container terminals. After the trailers transport the containers unloaded from the ship by the quay wall container carrier bridge to the yard or rear, they are stacked by the container gantry crane or directly loaded and transported away, which can speed up the turnover of the container carrier bridge or other cranes. The container yard that can stack 3 to 4 layers high and 6 rows wide is generally used in tire type, and also useful in rail type. Compared with the container straddle truck, the container gantry crane has a larger span and height on both sides of the portal frame. In order to meet the transportation needs of the port terminal, this kind of crane has a higher working level. The lifting speed is 35-52 meters per minute; the span is determined by the number of rows of containers that need to be crossed, the maximum is about 60 meters, the lifting capacity of the container for "single container" operation is about 40.5 tons, and the "double 20-foot container" operation The lifting capacity has two specifications of 61 tons and 65 tons.