Come scegliere il cavo giusto per una gru a portale fissa

Gantry cranes are widely used in various industries of the national economy such as metallurgy, electric power, ports, logistics, machinery manufacturing and marine engineering. They are important process equipment for industrial production and are related to the safety of people’s lives and the safety of national economic operations. and social stability are important components of public security in all countries. The development momentum of my country’s hoisting machinery industry is strong. As of the end of 2017, the number of hoisting machinery in my country reached 2.2375 million units. According to the “Notice of the State Administration for Market Regulation on the Safety Status of National Special Equipment in 2017”, the accident rate and fatality rate of cranes in my country rank first among the eight categories of special equipment. Therefore, there is an urgent need for an effective means to ensure the safety of in-service cranes. Safe and reliable operation of machinery.

At present, the inspection of fixed gantry cranes in my country mainly adopts measures such as installation inspection, periodic inspection, supervision and inspection of major repairs and transformations, daily inspections and regular maintenance. However, due to the complex operating conditions of the crane, harsh environment, and overload operation, it is impossible to understand the overall operating status of the gantry crane. In the macro inspection of the crane, taking the gantry crane as an example, on the basis of routine macro inspection, it is proposed to The assessment of equipment related persons and the assessment of equipment file management have added items such as deformation measurement of the main metal structure of the gantry crane to ensure that the assessment results can more accurately reflect the overall safe operation status of the hoisting machinery. What’s more, the european standard fixed gantry crane price in our company is economical and reasonable, if you need our products, please inquiry now!

The fixed gantry crane cable drum should be selected to be able to automatically wind the cable, and the driving torque of the cable drum should not be less than the maximum winding torque required when winding the cable. During the cable unwinding process, the traction force acting on the cable conductor should be as small as possible. For cables without reinforced cores, the maximum allowable pulling force acting on the copper conductor cross-section is 20N/mm2. For cables requiring high winding speed or cable self-weight, When it is heavier, a reinforced wire rope core that can withstand the required traction should be added. The following will introduce to you the requirements for choosing gantry crane cables:

1. When arranging the gantry crane cables, ensure that the lengths of each cable are equal, the pressure plate is securely crimped, and the outer diameters of cables on the same layer are as close as possible to avoid excessive stress on one or a few cables. Suspension cable trolleys should be equipped with traction wire ropes between each other. During operation, when the distance between two adjacent suspension cable trolleys makes the angle between the suspension cables close to 120°, the traction wire rope should be completely straightened and stressed.

2. When using a cable reel for power supply, the cable should be prevented from being worn during movement. For cables with an outer diameter not greater than 21.5mm, the bottom diameter of the cable reel should be at least 10 times the outer diameter of the cable; for cables with an outer diameter greater than 21.5mm , the bottom diameter of the cable drum should be at least 12.5 times the outer diameter of the cable.

3. When the Chinese supplier fixed gantry crane factory uses a cable suspension trolley (or cable guide car), the cable should be prevented from being worn and excessively bent during movement. For cables with an outer diameter not greater than 8mm, the curvature diameter of the cable suspension bending plate should be at least the outer diameter of the cable. 6.3 times the outer diameter; for cables with an outer diameter greater than 8mm, it should be at least 8 times the outer diameter; for cables with an outer diameter greater than 12.5mm, it should be at least 10 times the outer diameter; for flat cables, the thickness of the cable is equivalent to that of a round The diameter of the cable.

If customers want to choose a set of gantry cranes that are of reliable quality and comply with all safety regulations, then SEVENCRANE fixed gantry crane manufacturer will be your best choice. We are a crane manufacturer that has been operating in China for more than 30 years and we are the CE approved fixed gantry crane supplier. So far, our products have been exported to more than 80 countries abroad and are well received by customers. We are confident that we can customize satisfactory crane solutions for all types of customers.