For many years, the construction and industrial industries have relied heavily on telescopic cranes because of their versatility and ability for heavy lifting jobs. In several applications, from building construction to infrastructure development, these cranes are important equipment. The performance and lifting capacity of telescopic crane booms has significantly improved recently as a result of developments in design and building materials. However, these advances also bring out new challenges for boom repair in telescopic cranes.
Changes In Boom Designs
Traditional telescopic crane booms were formed of box sections of mild steel, which made repairs quite simple. However, half-round or “D” profile booms constructed of high-tensile steel are now used on modern cranes. Heat treatment of this high-tensile steel results in a balance between strength and weight that makes it possible to lift heavier loads to greater heights than ever before. Although these developments have improved crane performance, maintaining them now requires a more detailed procedure.
Challenges Of Repairing Modern Booms
Repairing damaged booms is difficult because high-tensile steel profiles are used instead of mild steel box sections. A new part might be simply welded into place to increase strength in older cranes. However, it is not always possible to repair damage to the lower half of the boom section in the more recent crane generation, particularly those constructed in the last eight years.
Modern booms have a “D” profile structure that is created by carefully and cautiously bending the steel, relying on the steel’s shape and integrity to preserve strength. This piece needs to be repaired vigilantly, which may not always be possible for a common operator.
Evaluation Process for Repair
Crane manufacturers and repair professionals all use a similar evaluation procedure for crane boom repairs. It involves assessing the damage’s length, width, and depth as well as where it lies along the telescopic portion and where it sits within the boom’s profile. This information is then passed on to the design engineers of the manufacturer, who decide whether the repair is possible and, if so, specify the repair process.
Different Repair Methodologies
There might be differences in how repairs are carried out by a crane technician, equipment manufacturer or a regular operator. Some manufacturers of cranes for sale in Europe choose to handle the repair themselves at specialized facilities, while others publish repair guidelines that independent repairers can use. These standards describe the physical dimensions, the necessary materials, and the post-repair methods. However, welder certification requirements are often not included.
The line between repairs and modifications is contentious in the United States. Non-OEM-approved repairs, according to some independent repairers, are not modifications and can be completed more quickly, saving clients’ money. Whereas, regulating repairs and changes are subject to different rules and laws.
Requirements for Insurers
For crane repairs that are not covered by a warranty, insurers often want two quotations. Manufacturers may occasionally withhold material specifications for more recent cranes, making it necessary to analyze steel samples to determine the steel grade. Insurance companies try to have repairs made swiftly and affordably, whether by the original equipment manufacturer or another business.
On the other hand, insurance companies frequently demand overload testing to confirm the strength and integrity of the repaired boom, regardless of who does the repairs. To be considered serviceable, the repaired portion must meet or exceed the original standards. This testing validates the crane’s dependability and safety.
Independent Repairers’ Advantages
Independent repair businesses may provide price and turnaround advantages over larger chains. They can offer effective repair solutions since they have adjusted to the difficulties presented by the latest crane boom materials and designs. However, choosing the best repairer requires considering elements like equipment, certification, and experience.
Maintenance and Recovery of Cranes with Care
Modern crane booms are less resilient to mishaps, events, and overloads, so proper care must be taken during crane recovery and maintenance. Recovery workers must use the highest caution when using cranes, particularly when exerting effort to turn a tipping unit. The boom can get distorted by even slight sideways loads and needs possible replacement.