A wide variety of lifting machinery bearings

In bridge engineering used in lifting machinery, depending on its construction and performance, and can be divided into small light lifting equipment, bridge type crane and jib type cranes, cable cranes four categories. Small light lifting equipment such as : Jacks, pneumatic hoists, electric hoists, balancing gourd (aka balance suspended), winches, etc.Bridge type crane as beam cranes, gantry cranes. Such as fixed jib type crane slewing cranes, tower cranes, truck cranes, tire cranes, crawler cranes. Cable cranes as lifts. Lifting classification by lifting TYPE: mobile cranes, tower cranes, mast crane. Form of the structure, the crane can be divided into small light lifting equipment, bridge type (bridge, gantry crane), arm shelf (self-propelled, tower, gantry, rail-style, floating boat-mast cranes), cable type. Arm erecting cranes and bridge crane features basically the same. In round ground and over the job, and more for handling and installation and other outdoor work, portal cranes, floating cranes, derricks, cranes line the walls and deck crane bearing and so on.Arm erecting cranes include: hoisting mechanism, luffing mechanism, rotation mechanism. With the action rely on these institutions can within a certain weight lifting and handling cylindrical space. Arm mounted on erecting cranes more other forms of transport on the vehicle (mobile) tool, which constitutes a running boom started rotating crane. Such as mobile cranes, rubber-tyred cranes, tower crane bearing, portal cranes, floating cranes, railway cranes.