Types of overhead cranes are widely used to lift materials and goods, but according to different working conditions, functions and crane design, different types of cranes are produced to meet customers’ demands. AIMIX Group, one of famous crane suppliers, provides kinds of cranes with top quality and best price.
What is single girder overhead crane?
Single girder crane is kind of lifting equipment that stretches across over the workshop, warehouse and stock ground. It looks like bridge, because both ends of girder are on the tall support structure. As a light and small lifting machine, single girder bridge crane has many advantages, such as simple structure, reasonable price. The main girder and end girders are combined with bolts, which makes it convenient to disassemble, assemble, store and transport.
Crane components are universal, so it is easy to replace spare parts. The height of building is low; the pressure of wheel is small. And it is suitable for automatic welding and assembly line processing.
Why choose double girder travelling crane?
Compared with single girder type, double girder type has one more girder, which means it can stand larger loading. Because it can adapt to distinct working environment, it can be used both indoor and outdoor. And another obvious difference is that the trolley of double girder bridge crane runs between two girders.
Its cabin has three types: close type, open type and heat-preservation type. And it can be fixed on left or right side. The open direction has end open, side open and top open.
Our company enhances the crane system and brings it up to new level. For example, the height of crane buffer has been increased, the machine is equipped with overload limiter, large screen display and protection device, which ensure the safety of user during operation.
Top running crane VS under running crane
Overhead bridge cranes can be divided into two groups: top running bridge cranes and under running bridge cranes, sometimes called under hung. These two different groups of bridge cranes are primarily determined by two factors: capacity and support structure. The former has larger capacity than that of latter.
Under running cranes can be suspended directly from the overhead steel for lighter cranes while top running cranes require a bracket off the building support steel or independent columns for heavier capacity. For top running system, the end trucks are supported on rails, which are attached to the top of the crane track.
When the facility has issue with headroom, the best choice is top running crane. Because a top running system travels above the track, it allows for additional headroom.
When choose underhung bridge cranes?
Every crane serves a specific purpose for a specific operation, when the crane’s end girders travel on the bottom of crane track, we call it underhung bridge crane. Under running bridge crane can be suspended directly on the crane structure without supporting column, because this bridge crane system has lighter capacity. It has advantages of flexibility, functionality, versatility and usability.
What are industrial lifting crane specifications about?
Industrial travelling cranes are usually used for lifting duty in the different work conditions, thus users should know basic parameters to choose the suitable equipment. Basic parameters show the main performance characteristics and operation ability. They include weight, lifting height, working class, working speed and span.
It is significant to learn how to choose industrial travelling crane based on crane standards, because it is directly related to enhance the productivity, take full advantage of crane function, meet users’ demand, decrease use-cost, achieve better economic benefit and make sure safe operation.
Overhead travelling crane for sale
Distinct from fixed gantry crane and jib crane, overhead travelling crane is more flexible and multifunctional. The word “travelling” means it can moves towards horizontal direction and vertical direction. The electric hoist or trolley on the girder can accomplish horizontal travel, end trucks and crane track can accomplish vertical travel, in this way, the overhead travelling crane can expand the moving area and make it easier to transfer goods. Our company, as a professional machinery supplier, provides crane lifting equipment adapted to lifting, loading, unloading, transferring goods in workstation, port, factory etc.
Equipped with electric hoist, it can be used for lifting work in machinery processing, assembly workshop, metal structure workshop, metallurgy and casting workshop and warehouse. Equipped with grab, it can engage in bulk material handling work in industrial department of metallurgy, concrete and chemical industry.
Electric overhead crane system
Electric overhead cranes can be abbreviated as EOT. There are various types of cranes those are specialized, but according to installations, the majority can be divided into three categories. First is top running single girder bridge crane, second is top running double girder bridge crane and third is under running single girder bridge crane. Our company as well-known crane supplier provides all above kinds of crane equipment with high quality and low price.
For electric travelling crane, it mainly includes four types: single girder type, double girder type, bridge gantry cranes and monorail crane.
The single girder bridge crane consists of a single bridge girder that is supported on two end beams. And it has a trolley hoist mechanism that runs on the bottom flange of the bridge girder.
For double girder bridge crane, it has two bridge girders that are supported on two end beams. The trolley runs on the rails on the top of bridge girders.
Gantry overhead crane, also called goliath overhead crane is similar with common lifting crane, the difference is that the bridge for carrying the trolley is supported on two or more legs running on fixed rails or other track. These legs take the place of column system and supporting track and connect to end beams which run on the rails.
Monorail type refers to crane with only one trolley hoist required. The hoisting mechanism is essentially the same as the regular single girder crane except that the crane doesn’t have a movable bridge and the hoisting trolley runs on a fixed girder. Monorail beams are usually I-beams.
Portable overhead crane for sale
Portable bridge crane is adjustable to accommodate low roofs or overhead beams. I-beam can easily accommodate most trolleys and beam clamps have the advantage of versatility. Quick disassembly and assembly make it easy to transport with a job site or from site to site. Super strong locking swivel casters can achieve moving unit easily. In addition, all-steel construction with finieshed powder coat for durability.
What is monorail overhead crane?
A monorail system is a simple lifting device with one stationary beam that has a hoist and trolley. Because of its light design, it can handle materials at fast speed to specific locations, which can improve the efficiency. Monorail system comes into two designs, ceiling and floor mounted. Ceiling mounted workstation bridge crane can make the most of existing building and production floor space. Free standing floor mounted monorail bridge crane has excellent driving properties and smoothly moving.
How to choose suitable type of overhead crane?
Purchasing an overhead crane is a matter not to be taken lightly. Installing an overhead crane is usually a long-term investment that consumes considerable monetary resources as well as time. The money and time spent are recouped by improved plant management, increased plant capacity and improved worker safety. However, these and many more advantages can only be attained by choosing the best system for a plant specific needs. This is not possible, even in the slightest bit if you do not acquaint yourself with the various systems that are available, the advantages, capacity and limitations of each of the various available.
Herein is a guide on how to go about choosing an overhead crane that suits your every need.
After acquainting yourself with the various systems, you should assess your need and circumstances. For instance, circumstances are different if you are installing cranes in an existing structure as opposed to installing the crane in a new structure. This is primarily due to the overhead room requirements of the various systems.
You should also assess the type of load that you may want to lift with the crane. Ideally, the crane should be able to handle load above your estimated needs. The results of this assessment will help you determine the load capacity of the crane to purchase. Also, it will help you determine the best system to acquire.
Beyond the service capacity of the cranes, you should look into the structural components of the prospective cranes. The structural components of cranes should be able to handle the load needs and also be of appropriate weight, especially if you intend to move the crane in the future. To this end, there is a choice of steel or aluminum crane. Steel cranes are able to handle more weight, but their downside is that they are very heavy. Aluminum cranes are lighter but have a limited service load.
Finally, you should analyze your automation needs. If you want to have a reduce labor force, you should consider going for the electric intensive overhead cranes. These cranes can be operated with as little as one or two people. However, they are more expensive. Mechanical versions are the better option if you intend to have little energy consumption by the crane.
Choosing an inappropriate crane can be costly in the long run. Moreover, the crane may pose safety risks, especially if the crane in question does not have the capacity to meet the demands of the tasks it should handle.
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