Analysis of the general classification introduced overhead crane grab

 (A) general overhead crane
    General overhead crane is working in the general environment in general-purpose  overhead bridge crane  (see standard GB/T14405-93). The following types of cranes belong to general overhead cranes.
    ① General overhead crane hook
    Universal hook bridge crane by a metal structure, traveling mechanism, trolley traveling mechanism, hoisting mechanism, electrical and control system and the driver chamber. Device to extract the hook. Nominal weight of 10T or less, mostly a lifting mechanism; 16T is more than the main lifting mechanism deputy two. Such a large variety of  bridge crane  operating environment can load and transport supplies and equipment.
    ② Bridge Crane
    Grab crane device to grab to grab hoisting rope were contacted, lifting mechanism, opening and closing mechanism. Mainly for bulk cargo, scrap steel, wood, etc. handling, lifting operations. This crane hoisting closure mechanism in addition to outside, its structural components such as overhead cranes overhead crane hook with the same generic.
    ③ electromagnetic crane
    The basic structure of electromagnetic crane hook crane with the same, the difference is a hook to hang a DC lifting magnet (also known as electromagnetic chuck) for lifting with a permeability of ferrous metals and their products . After the bridge is usually located in the motor-generator set to go on stage or in a cab of SCR DC box into DC power to AC power, and then in the car through a dedicated cable reel stand, the DC power supply flexible cable to the lifting electromagnet.
    ④ dual overhead crane
    Dual overhead crane There are three types: grab hook bridge crane, overhead crane hook and grab electromagnetic electromagnetic crane. It features a small car at a desk with two separate lifting mechanism throughout, set to grapple with, a set of hooks used (or a set of electromagnetic chuck with a set of hooks used, or a sets to grab a set of electromagnetic sucker).
     ⑤ with three overhead cranes
    Three with a bridge crane is a kind of multi-purpose crane. Its basic structure and the same electromagnetic crane. Can be used according to need hook lifting heavy objects, you can also grab a hook to hang a motor loading and unloading of materials, you can also grab unloaded and then hang up disk lifting ferrous metals, it is called with three bridge (can be changed) cranes.
    Grab * AC power supply, power disk * DC power supply. Therefore, the models must be the same as the electromagnetic hoist crane , set the motor-generator set or SCR DC power box. This crane suitable for constantly changing places extract device materials.
    ⑥ double trolley bridge crane
    This crane bridge crane with hook is basically the same, but in the bridge is equipped with two sets from the weight of the same car. This model is used to lifting and handling elongated object.