Crane Working Class

Crane Working Class

Crane working class is determined by two kinds of ability; first is the frequency of the use of a crane, called the crane use level; second is the crane load bearing, referred to as the crane load condition.

1.Crane use level
Crane has certain work cycles during the useful life time. Crane operation work cycle is the whole operation process starts from the preparing of lifting items, until the next lifting. Total work cycles show crane utilization degree, it is one of the basic parameters of crane level classification. Crane total work cycle is the sum of crane working cycles during the service life.
When determine the appropriate crane service life, it need to consider the economic, technical and environmental factors, and also need involve the influence of equipment aging.
Total number of work cycle is associated with the use frequency of crane. For convenience, the total number of work cycle in the possible range, divided into 10 use levels (U0 to U9), shown in the following table.

Crane Use Level Total number of work cycle Remarks
U0
U1
U2
U3		 1.6×104
3.2×104
6.3×104
1.25×105		 Do not often use
U4 2.5×105 Often use at light level
U5 5×105 Often use at medium level
U6 1×106 Not often use at heavy level(frequently)
U7
U8
U9		 2×106
4×106
>4×106		 Frequently use


2.Crane load condition
Load state is another basic parameter of crane level classification, it shows that the main mechanism of crane - the weight of crane lifting mechanism under load.
Crane load condition
Q1 - Light - rarely hoisting rated load, generally hoisting light load
Q2 - Medium - sometimes hoisting rated load, generally lifting medium load
Q3 - Heavy - often hoisting rated load, generally lifting heavier load
Q4 – Extra heavy – frequently lifting rated load

3. Crane working class
Crane working class is also called crane level classification which is determined by crane using level and load condition, crane work level with the symbol of A, its working level are divided into 8 grades, namely A1 ~ A8.

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Industry Park, Changyuan, Henan, P.R.C

Weihua Cranes Machinery Co., Ltd.

Weihua Crane standard
Weihua Cranes started since the year 1988; it is professional material handling equipment manufacturer and servicer with largest production all over the world. With Weihua Cranes historical influence, “China Crane Town” (which covers more than 2/3 crane market in China) developed in the area around Weihua Cranes headquarter.
Weihua Cranes main businesses are researching, developing, manufacturing and sales of all kinds of lifting equipment. We have passed the ISO9001 quality system certification, ISO14001 environmental management system certification, OHSAS18001 occupational health and safety management system certification, CE certification, etc.
Weihua Cranes advantages and differences with other crane manufacturers are that we have professional crane team to provide you with safe, reliable, efficient crane solutions and services, and as far as possible to reduce your cost. Crane your business, let’s develop together!

 

Excellent Product and Solutions

Weihua Cranes become one of general hoisting machinery manufacturing industry leader with the largest production and sales volume. We can provide electric hoists, single/double beam overhead cranes, gantry cranes, and such varieties of lifting equipment 10 serious more than 200 types. The lifting capacity of the overhead crane can achieve 1000t, and the gantry crane 900t, to meet all kinds of project need.
Weihua Cranes is committed to provide total optimized crane program solution and perfect service to help customer to save cost and improve efficiency.



 

Advanced R&D | Strong Q&C | Production capacity

Weihua Cranes has Technology Testing and Inspection Center authorized by the state, post-doctoral research station, obtains 283 technology patent certificates and inventions, R & D team of Weihua with 600 people and with Shu-zi Yang (academician from the Chinese Academy of Engineering) as the foregoer, is the biggest one in general purpose crane industry in China.
Weihua Cranes now adopted the “lean production management”, the undaunted testing and outstanding market performance, ensuring Weihua Cranes stand out as the leading brand within crane industry. Weihua Cranes continuously make the innovation on technical and strict on QC management to keep the products quality steady improving.

Weihua Cranes total asset is of 0.78 billion US Dollar, over 6000 employees, covers an area of 3.42 million square meters, one of Weihua Cranes workshop is the largest within the whole world crane industry. A varieties of 1700 sets manufacturing and testing equipment, including machining, heat treatment, welding, assembly, testing and packaging shipped metering and other ancillary equipment with a full range of advanced production scale and production capacity.
 

Outstanding Marketing Performance & Long-term Partner

Production and sales of overhead and gantry cranes won the first in China for continuous 8 years. And now, total production amount of Weihua Cranes products achieve world first. Weihua Cranes has developed strategic partnership with Siemens, GH Spain, Demag, SEW, Schneider, etc.

Weihua Cranes are widely used in machinery manufacturing, iron and steel metallurgy, nuclear industry of mining, water conservancy and hydropower, roads and railways, electric power, automobile manufacturing, petrochemical, port logistics, shipbuilding and other material handling, etc. We have successfully exported to more than 90 countries and regions such as the United States, Great Britain, Russia, India, Brazil, Peru, South Africa, Mongolia, South Korea, Australia, Southeast Asia, the Mid-East, etc. And get well reputation.
Weihua Cranes with strong capacity, focus on customer service, provide with first-class quality, safety and reliable products, create more and more value for customers, these are the reasons we set-up stable and long-term relationship with our customers.
 

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