What is the difference between the single beam and the double beam of the crane?

What is the difference between the single beam and the double beam of the crane? Among overhead cranes, there are two different types of single girder and double girder overhead cranes. Many visiting customers also often mentioned: What is the difference between single beam and double beam? In fact, single girder, double girder, literally, single girder structure is relatively simple, so what is the difference between single girder and double girder of bridge crane, and what is the connection between these two beams? Let’s discuss it in detail.

1. Working environment
Single-girder overhead cranes are generally used in places with small spans and light weight, and the working environment of single-girder overhead cranes is relatively small. The double-girder bridge crane has the characteristics of large span, light weight, bright work place and high working level. Compared with single girder, double girder overhead crane has a wide range of uses.

2. Crane structural features
The single-girder bridge crane is light in weight, simple in structure, and easy to disassemble. The double-girder bridge crane has a complicated structure, heavy weight and complicated installation.

3. Production cost
The single girder overhead crane has a lower cost and lower cost, and the cost mainly depends on its span. The span of the single girder overhead crane is relatively small, so the price is relatively cheap. The double-girder bridge crane has the characteristics of high cost, more materials, more time, and large span, and it is expensive.

4. Operational goals
Single-girder overhead cranes generally operate on the ground, so we can only operate them through the handle or remote control. Double-girder bridge cranes are generally used for the control of images such as grab buckets, electromagnets, and special fixtures. Thus, the operator needs to control the operation.

5. Mechanical properties
Single-girder overhead cranes have the advantages of low stability, slow speed and small bearing capacity, and are suitable for short-term use. Double-girder cranes have the advantages of high stability, fast speed, high performance level, large bearing capacity and long service life.

6. Crane main beam structure
A brief understanding of single-girder bridge cranes is that there is only one beam on the beam, and an electric hoist is installed on the beam as the main lifting mechanism. Double-girder bridge cranes are divided into two types: QD and LH. Among them, QD is two beams compared to single beam, crane is lifting mechanism, LH is trolley, but electric hoist is the main lifting mechanism.

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