Explosion-proof Hoist Double Girder Crane

Explosion-proof Hoist Double Girder Crane

Weihua Crane Machinery Co., Ltd.

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




Explosion-proof Hoist Double Girder Crane is one kind of double girder bridge cranes; the bridge structure is the same with standard double girder bridge crane. The crane use frequency is general, so it is with high cost performance using explosion-proof electric hoist trolley as lifting mechanism. Compared with explosion-proof single girder crane, this crane is with higher safety performance, more solid and stable structure.
Explosion level including ExdⅡBT4 and ExdⅡCT4, applicable hazardous areas as follows: Under normal circumstances, places that explosive gas mixtures may occur. And place explosive gas mixtures that may occur occasionally for a short time only under unusual circumstances in case of equipment failure or misuse.

Explosion-proof Hoist Double Girder Crane

Weihua Crane is professional material handling equipment manufacturer and servicer with largest production in global. Provide you with overhead crane, gantry crane, electric hoist, etc. of safe, reliable and efficient crane solutions and services.


Explosion-proof Hoist Double Girder Crane mainly consists of crane and trolley traveling mechanisms, electric control system, bridge structure, hoisting mechanism, etc.
Crane and trolley traveling mechanism
Crane and trolley traveling mechanisms including explosion-proof motor, explosion-proof wheel set, reducer, etc.

 Explosion-proof Hoist Double Girder Crane explosion-proof motor           Explosion-proof Hoist Double Girder Crane explosion-proof wheel set
Adopt explosion-proof motor, standard motor insulation class is B, protection class IP44, it also can be made to F or H insulation class, IP54 or IP55 protection class according to condition requires, proof grade is divided into ExdⅡBT4 and ExdⅡCT4. Motor has features with good heat dissipation, long service life, safe and reliable, etc.
Wheel group is of 45 # steel forging molding, through precision machining, heat treatment hardness of 300 ~ 380HB, hardened layer at a depth of not less than 15mm 260HB. When the explosion level is ExdⅡCT4, it need to use explosion-proof wheels to prevent friction with the track and produce sparks. At the rail wheel set with rail sweep and polyurethane buffer to prevent sparks by collisions.
Electric Control Mode
Direct control, is control of the motor contactor, can achieve single and double speed, reversing control of motor.
Series resistance control, when the cabin operation, crane traveling with series resistance control, this way reduces the motor starting current, relieving mechanical shock, and can achieve multi-position. It does not apply to ground operation and remote operation.
Frequency control mode, use inverter to change the frequency and voltage of the motor power, to achieve the purpose of the motor speed control. It is with large range of control speed, good speed smoothness, obvious energy saving effect, small mechanical impact, and short-term overload capacity can up to 150%. Frequency control speed ratio 1:10, any speed during this period can be achieved. Inverter adopts well-known brands such as: Mitsubishi inverter, Yaskawa inverter, Siemens and Schneider frequency inverter and so on.
Electrical explosion protection system
Explosion-proof electrical device with sealed enclosure, explosion-proof level is ExdIIBT4 or ExdIICT4. Electrical components inside of the Explosion-proof control box adopt high quality, good reliability and long service life Siemens low-voltage electrical components to minimize the times that explosion-proof box open due to electrical fault.
When the cabin operates, cabin interior switches, junction boxes, buttons, boxes and bells, etc. are both explosion-proof. Other safety protection systems such as fire limit, travel switch are also explosion-proof.
Explosion-proof control box
Explosion-proof control boxExplosion-proof travel switch
Bridge structure and the trolley is with same electric hoist double girder crane, pls click.
Hoisting mechanism is explosion-proof electric hoist, please click explosion-proof electric hoist.

Technical Data

Explosion-proof Hoist Double Girder Crane Technical Paramter

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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.
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.
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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