In bridge engineering used in lifting machinery, depending on its construction and performance, generally can be divided into For the small light lifting equipment, bridge type crane and industrial overhead 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. Such as fixed jib type crane slewing cranes, single girder bridge cranes, truck cranes, tire cranes, crawler cranes.
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