Regardless of what purpose and whatever type of crane is used, the most important inspection and control is the sling control. For the safe operation of the cranes, it is necessary to have regular inspection and maintenance of the whole load bearing sling and its connections. The service life of steel ropes is affected due to many reasons resulting from wear, metal fatigue, corrosion, bending, bending and misuse resulting from intensive use.
If the steel ropes are corroded, or if the wires are severely damaged, such as breakage, opening, bending, or excessive wear, the sling must no longer be used. If there are broken wires, they should be cut and if the number of broken wires is dangerous for safety, sling should be changed. In addition, if the diameter changes due to overloading of the rope, this must also be taken into account and the sling replaced if necessary. If there is a risk of corrosion on the rope, the internal structure of the rope must also be taken into account. By sling is meant different combinations of mechanical components including steel ropes, chains, cloth ropes, fiber ropes and the like. Slings are a danger to human health and property safety if not used correctly. There is no single slingshot. There are many sling combinations depending on the purpose and shape of the mooring, double-arm connection, two-arm connection, four-arm connection, vertical connection, single basket connection and double basket connection. The most important point for those who use these tools is to create and use the right combination.
Regardless of what purpose and whatever type of crane is used, the most important inspection and control is the sling control. For the safe operation of the cranes, it is necessary to have regular inspection and maintenance of the whole load bearing sling and its connections. The service life of steel ropes is affected due to many reasons resulting from wear, metal fatigue, corrosion, bending, bending and misuse resulting from intensive use.
If the steel ropes are corroded, or if the wires are severely damaged, such as breakage, opening, bending, or excessive wear, the sling must no longer be used. If there are broken wires, they should be cut and if the number of broken wires is dangerous for safety, sling should be changed. In addition, if the diameter changes due to overloading of the rope, this must also be taken into account and the sling replaced if necessary. If there is a risk of corrosion on the rope, the internal structure of the rope must also be taken into account. Enterprises must check the ropes and slings combinations and take the necessary measures in a timely manner.
Cloth slings are suitable for heavy loads. For example, 15 cm-wide polyester slings have 6 tonnes for flat lifting and 4,8 tonnes for knuckled lifting. What is important for businesses is the choice of slings suitable for the load to be lifted.
The Regulation on Health and Safety Conditions in the Use of Work Equipment issued by the Ministry of Labor and Social Security describes the minimum requirements for the health and safety of construction machinery and equipment used in enterprises. Slings are also included in this group of lifting and conveying materials. Unless otherwise specified in the relevant standards, dynamic tests are tested with 1,25 times the declared load and static tests with 1,1 times.
With the excessive use of slings, wear, metal fatigue, bending, bending, corrosion and other reasons are affected due to misuse. According to the aforementioned regulation, all kinds of lifting machines and vehicles used in the enterprises must be inspected and inspected both before and during the operation. Inspection and inspection of slings, steel ropes, chains, hooks, pulleys, brakes and automatic stops must be performed at least once a year by mechanical engineers, machine technicians or high technicians.
