Overhead crane, also known as bridge crane is one type of material handling equipment to meet the lifting requirements of medium and heavy industries. Generally, an overhead crane is a crane with a lifting hoist traveling along the crane bridge between parallel runways.
Designed overhead crane project realizes your overhead crane expectation. The crane design services from Dongqi Crane is provided FOR FREE.
Designs of varous types of overhead cranes are provideded. Main types of overhead cranes are as following:
European single vs. double girder crane - Dongqi European hoist crane
Standard overhead cranes: Lifting capacity: 5 ton-550ton, Span：10.5m-31.5m, Lifting height：1m-30m, Working duty is medium (A5, A6). Also supply non-standard products according to your requirements.
Note:
Applications
Conditions
Working ambient -25℃～+40℃, moisture ≤85%, altitude below 1000 meters, power supply 380V, 50Hz, 3phases (Adjustable according to customer's different requirement).
Single girder overhead crane v.s. Double girder overhead crane
An overhead bridge crane can be configured in a single girder overhead crane or double girder overhead crane design. In simple terms, a bridge girder, or beam, is the support structure that allows the trolley and hoist to move from side-to-side along the bridge. The trolley is used to precisely position the hoist prior to raising or lowering a load.
To a degree, both single and double girder cranes are equal in strength and durability. Single girder bridge cranes distinct itself from double girder bridge configuration mainly in terms of hook height, which is height your electric hoist can lift above the ground.
Due to the placement of electric hoist, the double girder crane offers more hook height, which is installed on the top of double girders rather than hung under the single girder.
A single girder bridge crane is usually designed for the lifts under 20 tons, span less than 31.5m, or the requirement for crane services classification is under A7 and A8.
Single girder overhead crane - Overhead crane types of Dongqi
The overhead bridge consists of one girder beam supported on each side by an end truck. The electric trolley and hoist commonly run on the bottom flange of the bridge, often called single girder underhung overhead crane. The single girder underhung crane is less expensive because of the following reasons:
When the lifts is more than 20 ton or the span is more than 31.5m, or the crane duty cycle is A7 and A8, the double girder overhead crane will be the first choice.
Double girder overhead crane - Overhead crane types of Dongqi
Two girder beams makes up the bridge, supported by an end truck or carriage on each side, with the electric trolley and hoist running on the rails, installed on the top of both bridge girders.
What a top running crane or under running crane is should be understand when you want to know the clear differences between bridge cranes.
Top running crane is very flexible and versatile, which can be used to handle lifts with small and large capacity.
Top running crane - Type of overhead crane
With no limiting capacity, the top running crane can be used to handle lifts with small capacities to very large capacities. Top running cranes consist a rail installed on top of each runway, with wheels move on the rail, rather than on the bottom flange of the runway beam. Supported by the building structure or runway support columns, or sister columns, top running overhead crane are the first option for moving extremely heavy loads.
Under running crane, also called under hung cranes, suspension cranes, are used for lighter service and lower capacity applications, usually supported by ceiling or roof structures.
Under running or under hung crane - Overhead crane type
Due to the crane wheels are supported by the bottom flange of the overhead crane runway beams, functioned as the crane rail, the under running crane is also called under hung cranes. This type of overhead cranes can maximize the utilization of the floor space of your facility, because under running cranes are supported by the ceiling trusses or the roof structure.
With the utilization of an existing support structure (if adequate), or run on a newly-engineered support structure, the under running cranes may lower the cost of crane.
Features of underhung cranes
Workstation cranes are designed for transferring with limited effort in a smaller size work area. Workstation cranes are lighter-duty systems for lifts from 0.25 ton up to 2 tons in capacity, in a repetitive way to lift and position loads, to improve working productivity and ease of work flow.
Workstation cranes can use modular design to build and install, offering high flexibility without requiring an existing supporting structure for installation.
Workstation crane - A type of overhead crane of Dongqi Crane
Do you have a better understanding on what the best type of overhead crane for your application is. Maybe you will realize a workstation crane or monorail crane is needed for your specific lifting requirements instead of a full overhead crane installation. Maybe you need additional fabrication or engineering to have an overhead crane installed in the existing building structure. No matter what the situation is, you have to consider the following factors when selecting from the different types of overhead cranes:
All the ovehread crane can be customized according the required crane lifting capacity, working application, loading duty, and the other specific requirements. Contact us to get custom crane design today!
Dongqi Crane is capable of design complex crane projects from 0.5 ton-500 ton outdoor gantry cranes, jib cranes and container cranes to 0.5 ton-500 ton indoor lifting systems for various industries. Dongqi Crane is capable and qualified to provide crane design for light duty overhead crane with capacity such as, 1 ton, 2 ton, 3 ton, 5 ton, 10 ton, 20 ton, and heavy duty overhead crane designes up to 600 tons, etc.
Overhead crane project design services from Dongqi Crane- your overhead crane manufacturer and crane services provider - lowers your overhead crane price. Please send your overhead crane inquiry and then decided which crane supplier to selection. Because Dongqi Crane belive that our overhead crane will standing out after the comparison of overhead crane quotations. Buy overhead crane from Dongqi Crane will be a desicion that you will never regret.
Overhead crane video
Dongqi industrial overhead cranes have be used in various industries, such as steel industris, please learn more about Dongqi industrial overhead cranes.For the various types of overhead cranes, how to select the right overhead crane for your applicaiton, please leave a message below, and Dongqi Crane will help you to find the most suitable overhead crane for your workshop, warehouse, and other factories or plants, etc.
Committed to be a dynamic and more influential force in the global lifting equipment market, DQCRANES has developed a supply chain which can delivery our cranes globally, and so far, we have served customers in about 85 countries, such as, South Africa, Malaysia, United Arab Emirates, Singapore, Canada, Saudi Arabia, Philippines, Pakistan, Australia, United States, Thailand, United Kingdom, Indonesia, Egypt, India, Brazil, Sweden, and Taiwan, etc.
Overhead crane project cases in different industries and countries are studied. Learn the overhead crane project case studies and contact us to get the ideal material handling solution for your application.
First, it is related to the weight. The overhead crane with small and medium lifting can adopt high speed to improve efficiency, the overhead crane with heavy lifting is suitable to choose low speed to reduce driving-power and improve travelling stability and safety.
Working speed is also related to working class and working requirement. The overhead crane with high class, frequent use and high efficiency can adopt fast speed, working mechanism with low class and adjusting purpose can adopt low speed. The overhead crane only used for equipment installation and maintenance can choose low speed.
According to practical needs, it can also adopt double speed (high and low speed), dead speed or adjustable speed. What's more, working speed is also related to working room. The overhead crane with long travelling distance, high lifting height is suitable for high speed. The overhead crane with short travelling distance is not suitable for high speed. With development of industry, the overhead crane with much transporting work mostly adopts high speed.
The overhead crane used for installation and maintenance adopts adjustable speed. For some overhead cranes with special functions, such as the overhead crane for quench, should has fast-down device, for overhead crane with high lifting height, it should improve lifting speed, adopt low speed for heavy material, high speed for no-load, or high down-speed to increase efficiency.
1. Customized overhead crane perfectly fits your apppcation environment.
Taking your building and working conditions and your pfting requirements into full consideration, the engineering team of DQCRANES will work out an overhead crane which will adapt your facipty ideally.
2. Types of quapty overhead cranes with various tonnages are available which can meet your pfting requirements.
Learning more on questions and answers on overhead crane.
Overhead Crane
