Line hanging, also known as traffic, cranes, crane, it is the people called for a sweeping crane line hanging and what we call the gantry cranes, bridge cranes basically the same. By driving There are basically two types: one is focused on driving, the other for each drive. Focus drive line hanging which uses an electric motor to drive the long drive shaft on both sides of Active Wheel. Line hanging are driven separately driven initiative that is on both sides of each wheel with a motor drive. Medium and small more using a combination of overhead crane brakes, gear units and motors into one of the "triple play" drive mode, the large overhead crane lifting capacity of the ordinary for ease of installation and adjustment, the driving device often used universal coupling . According to the shape can be divided into two categories, namely gantry cranes and gantries. Gantry crane gantry crane, also known, is a variant of the bridge crane. In the port, mainly used for outdoor yard, yard goods, bulk cargo loading and unloading operations. Its metal structure shaped like a door frame, carrying the main beam install two feet down, you can walk directly to the track on the ground, both ends of the main beam may have overhanging cantilever. Gantry crane with a high utilization of space, large operating range, wide adaptation, versatility, etc., are widely used in the port yard. Also known as crane beam bridge crane. It is Hengjia in workshops, warehouses and feed field empty for material lifting lifting equipment. Because of its ends situated on tall concrete pillars or metal stents, shaped like a bridge. Overhead crane lay on both sides of the bridge along the elevated track longitudinal running, you can take full advantage of the space below the lifting bridge materials, unimpeded ground equipment. It is the most widely used, the largest number of a lifting machinery. Bridge crane can be divided into single girder crane and double girder bridge crane. Contact: Mr. Wang 15515537288 Tel: 0371-85700566 Fax: 0371-85700566 QQ: 1481334785 138037178 http://www.zzhuake.com