Types and characteristics of double-girder overhead cranes. Purpose and design of electric cranes 5 and 10 tons.

Various cranes are used to move cargo in space. Including pavements. They have various gripping devices (bucket, magnet and others).

The gripping device can be located on a mobile trolley or hoist. The trolley moves on a bridge made of high-strength steel.

The hoist can be manual or electric. The mobile hoist is suspended from a carriage (cat) moving along an I-beam.

Specialized factories produce overhead cranes with very different characteristics. Therefore, before purchasing an overhead crane, you should carefully consider the characteristics. Companies (for example, https://ruskranmash.com/oborudovanie/kranyi/kran-mostovoy-dvuhbalochnyiy/) selling cranes often indicate all the data on the website, which makes searching for information much easier.

Types of overhead cranes

By design they are classified into:

Hanging models;
Support models that move on rails located in fixed supports, and some others.

Based on the weight of the load being lifted, they are classified into groups:

The first - up to 5 tons;
The second - up to 50 tons;
The third - up to 300-320 tons.

Depending on the purpose there are:

General models - for standard lifting operations;
Special models.

Depending on the drive, there are:

Using the physical effort of the operator to move the winch to perform assigned tasks;
Electric - uses the energy of an electric motor.

Depending on the type of movement there are:

Single beam;
Double beam. Their design is more reliable, stable, less subject to wear, and the load rises to a greater height.

Double-girder electric overhead cranes with floor control

(with electric hoist, manufacturer Bulgaria, lifting height 6 m, ultrasonic, -20+40 C, operating mode A3)

G/P	Crane span
G/P	4.5 m	7.5 m	10.5 m	13.5 m	16.5 m	18 m	19.5 m	22.5 m
3.2 tons	750 000	900 000	950 000	1 250 000	1 350 000	1 550 000	1 750 000	1 950 000
5 tons	850 000	1 000 000	1 050 000	1 350 000	1 450 000	1 650 000	1 850 000	2 050 000
10 tons	1 200 000	1 350 000	1 500 000	1 700 000	1 800 000	1 900 000	2 100 000	2 300 000
12.5 tons	1 400 000	1 500 000	1 700 000	1 800 000	1 950 000	2 050 000	2 150 000	2 700 000
16 tons	1 500 000	1 600 000	1 700 000	1 950 000	2 200 000	2 500 000	2 800 000	2 900 000
20 tons	1 600 000	1 950 000	2 100 000	2 400 000	2 600 000	2 800 000	2 900 000	3 000 000
25 tons	2 400 000	2 800 000	3 100 000	3 300 000	3 700 000	3 800 000	3 900 000	4 100 000
32 tons	2 500 000	2 900 000	3 300 000	3 500 000	3 900 000	4 000 000	4 100 000	4 300 000

Prices are given with an installed telpher of Bulgarian production. Delivery without a telpher or with a telpher from another manufacturer is possible.

General design and purpose of overhead cranes

Each model has three main components:

The metal structure is the base, including the supports and spans of the crane. When designing a model, a cross-section is selected - lattice or box-shaped;
Grasping device. It can be automatic (spreader, pneumatic suction cup, magnet), mechanical (hook);
Lifting mechanism - winch, chain or rope with a fixed gripping device. For operational safety, travel limiters are provided.

Any crane model repeats the same operations: the load is fixed, moved, unloaded, then the crane returns to its original position.

The bridge structure has stops at the ends - limiters for blocking the moving cart.

For greater stability and uniform load distribution, the span beam has large and small diaphragms. Special platforms are also installed, which are necessary for repair and maintenance of the crane.

Assembly diagrams for components are usually unified for many types of cranes.

When the crane is operating, a trolley moves along the rails, the weight of which is usually from 0.2 to 0.4 of the crane's lifting capacity.

Movement occurs using a movement mechanism with cylindrical or conical wheels. In this case, the central drive can be on both wheels at once or separately. The mechanism has a mounted gearbox and a brake.

Why should you buy a double girder electric crane from us?

For more than 10 years, our company has been designing, manufacturing and installing cranes of any complexity for various applications.

Certificates and standards.
Our activities and design solutions are carried out in accordance with all accepted standards ensuring the reliability, durability and efficiency of manufactured products.
Own production.
Thanks to our production facilities, we deal with the full cycle from design, bench testing to construction, assembly and installation of the crane.
Employee experience.
Our specialists have extensive experience in the design, supply and installation of cranes. They will be happy to advise and find the most optimal solution for each client.
Quality of materials.
To manufacture the metal structures of our products, we use only new Russian metal, and the best Russian or imported components for drives, electrical equipment and other elements.

Overhead crane application

They are widely used in lifting loads, both indoors and outdoors. They can operate in a very wide temperature range from –20 C to +40 C.

Operation of taps is not allowed in rooms with high humidity, when the atmosphere is saturated with vapors of alkalis and acids. They should also not be used in fire or explosive environments.

Wherein:

Manual suspended and support bridge models are used in the absence of an electric current supply or in small areas;
Electric support and suspension models are in demand for frequent use, in large rooms, in workshops, in warehouses;
Models equipped with grabs are used when working with bulk cargo;
Electric, overhead overhead cranes are typically used when lifting magnetic loads.

Design features of double-girder bridge cranes

An electric double-girder overhead crane is a structure made in the form of 2 span beams with a lifting mechanism (telpher, winch).
This type of tap can be used both in open and indoor spaces, under different climatic conditions. The crane can be controlled from a pendant console (from the floor), using radio control, a stationary or mobile cabin.

On a note!

When a crane is radio controlled without maintaining backup control from a pendant console, cranes up to 10 tons (inclusive) also become supervised and require registration.

The design of a double-girder overhead crane is similar to that of a single-girder crane. What is distinctive is the span structure of the crane - there are two of them. Due to the design of the crane, the lifting mechanism is not suspended from the span beam, but is installed on a special crane trolley that moves along the span structure on special rails. Like the crane itself, the crane trolley has its own gear motors and can be equipped with frequency converters and several travel speeds.

The overhead crane moves along rails installed on the crane runway.

On a note!

Double-girder overhead bridge cranes are very rarely found in the CIS; if necessary, our company can develop and supply a crane of this type.

Global Aicrane® Overhead Crane Projects:

Aicrane Group has been specializing in the design, production, sales of lifting equipment for 30+ years. So far, we have already exported 60,000+ overhead cranes to 70+ countries around the world. Russia and the CIS countries are our largest markets in Eurasia, where we export about 10,000 overhead cranes annually. In order to better serve customers in Russia and the CIS countries, we opened a branch in Tashkent, Uzbekistan. Warmly welcome you to visit us!

Our Market

Eurasia : Russia, Uzbekistan, Kazakhstan, Ukraine, Belarus, Armenia, Kyrgyzstan, Kyrgyzstan, Azerbaijan, Turkmenistan, Tajikistan, Georgia, Turkey, Latvia, Romania, Bulgaria, Estonia, Mongolia, Indonesia, Philippines, Malaysia, Poland. Middle East : United Arab Emirates, Saudi Arabia, Bahrain, Oman, Sri Lanka, Maldives, Lebanon, Kuwait, Qatar. Africa : Nigeria, Kenya, Ethiopia, Botswana, Zambia, Uganda, Seychelles, South Africa, Mauritius, Lesotho, Zimbabwe, Ghana, Congo. Americas : Peru, Honduras, Jamaica, Bolivia, Panama, Dominican Republic, Fiji, Ecuador, New Zealand, Trinidad and Tobago, Suriname.

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