How to distinguish the working level of Crane & Hoist

How to distinguish the working level of Crane & Hoist ?

Crane & Hoist is a intermittent work machine, with a short and repeated work characteristics. At work, the Crane & Hoists are on and off, turning and reversing. Some Crane & Hoists work three shifts day and night, some work only one shift, and some work only a few times a day. This kind of work conditions show that the Crane & Hoist and its mechanism of busy degree is different. At the same time, the load acting on the Crane & Hoist is also changing, some Crane & Hoists are often full load, others often only light load, its load situation is very different. In addition, because of the different velocities of each mechanism, the degree of dynamic impact load is different. This working feature of a Crane & Hoist must be taken into account in the design of Crane & Hoist parts, metal structures and the determination of Crane & Hoist power. Nowadays, as one of the main technical parameters of the Crane & Hoist, the working level of the Crane & Hoist is replaced by the unreasonable working system in the past.

 Crane & Hoist overall working level: The working grade of Crane & Hoist is a parameter indicating the heavy work degree of the Crane & Hoist, that is, the heavy degree and full load degree of the Crane & Hoist work in time. The hooks are divided into seven categories: A1-A3 (light grade A4-A5), A6-A7 (heavy grade). Light grade A1-A3: rarely raised rated load, generally slightly lifted, used for installation and repair of equipment in power stations or other workplaces, or workshops and warehouses that are not commonly used for work.

Intermediate (A4, A5) : sometimes hoisting load rating, general lifting medium load, workshop and garage for heavy work, like general mechanical processing and assembly workshop.

Heavy grade A6-A7: as usual lifting rated load, generally lifting heavy load, used in heavy work workshops and warehouses, such as long hours of frequent lifting of heavy load items and metallurgical workshop use.

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