Однобалочный кран, как следует из названия, имеет только одну балку. Двухбалочный кран обычно относится к двухбалочному мостовому крану. Двухбалочный кран обычно состоит из трех основных частей: механической, электрической и металлической конструкции.

The double-girder bridge crane has superior performance, compact structure, light weight, reliability and operation, and can meet various working conditions. It can reduce the overall investment in the factory, improve production efficiency, reduce maintenance costs, and save operating energy consumption.

Its main advantages: strong power, large traction, and strong climbing ability (can climb 25-degree slopes). The maximum load capacity at a 25-degree slope is 32 tons. At present, the diesel engine monorail crane can achieve 12 drives; the traction force of each drive is 25KN, and the maximum traction force reaches 300KN. Its main disadvantages are: the exhaust gas emitted by the diesel engine causes pollution to the narrow tunnel space, noise pollution, and complicated maintenance.

Maintenance of the diesel monorail crane is very important for the normal transportation of underground mining. Especially in some relatively large coal mines, the depth of the mine is large, the ground pressure is high, and the tunnel floor is seriously deformed.

Compared with other equipment in coal mine transportation, the monorail crane has the ability to perform difficult operations in complex external environments. Its transportation is highly safe and consumes less manpower and material resources.

To use a jib crane safely, the operators must be vigilant at all times during operation. The following will explain in detail some precautions when operating the jib crane. First of all, relevant personnel should carefully hand over the shift, carefully check the reliability of hooks, steel wires, brakes, and safety protection devices, and report any abnormalities in a timely manner. Secondly, before starting the boom crane operation.