Mobile crane archivos - Kranex


Should it be mandatory to get qualifications for operating mobile cranes anywhere?. In fact it should be… at least advisable. In most of occidental countries, the operator needs recognized qualifications to drive and operate a mobile crane. Similar to the mobile crane NVQ (National Vocational Qualification) in the UK, it is likely to find an equivalent assessment all over the world, but in some countries this code of practice is relatively new. In Spain for example, the official requirement to pass an exam (mobile crane test questions and answers) to get your mobile crane nvq (carnet de gruísta) is less than ten years old! Read more


Going further into the safety standards to follow in the workplace by operators and users of mobile cranes, one might consider a few simple rules that in most cases ensure safe operation without risk to the integrity of individuals near the site of operation. Such simple concepts like: determination of stability of a mobile crane, ground bearing pressure calculation, exclusion zone, earthing/ electrical grounding, wind speed, load test procedure, useful life of the mobile crane, wire rope working conditions, net capacity after “load weight” deduction, etc., are crucial facts to take into consideration even before driving the crane to the job site. Read more


Apart from being very popular in online social media like Facebook, Youtube or Twitter, mobile cranes are quite present in the society and in daily life, in terms of merchandising. The scale models of cranes in all the sizes and formats were initially a great hobby for craftsmen & metalworkers who used to build any model on the market, with amazing accuracy at a much smaller dimensions. Today Lego, a brand of famous toys, is a pioneer in representing scale mobile cranes that can be assembled by anyone. That fact is evidenced by the extensive presence of Lego mobile crane videos & pics on Youtube, with a detailed explanation (training videos) of their rigging and operation. Furthermore, there is a wide variety of mobile crane online games and toys that can be purchased on eBay, for example. Read more


Continuing with our previous post, we would like to focus now on the inspection checklist of mobile cranes, and the lift plan template and procedures to prevent accidents at the job site. Careful exam and rigorous inspection checklist of mobile cranes key aspects, as   certification and qualification of the operator and the validity of his license to drive, the mobile crane specifications and net lifting capacity, are as important as the follow-up of the mobile cranes inspection guidelines issued by the American OSHA or the British HSE.

In fact, to meet the formal aspects of safety regulations (Osha, HSE, etc.) for working with mobile cranes, is the first step to avoid unnecessary troubles. Save costs to avoid       regulations compliance, is self-deception. Licenses, certifications, qualifications, supplier specifications and user manuals in the local language, must also be part of the mobile crane inspection checklist, periodically. To check and confirm the regulations are               respected, before placing the equipment into operation (market), is a must and then it should be constantly done, over the mobile crane entire lifetime. You can meet all the   previous conditions and get even the best lift plan template and the best lifting procedure and every piece of machinery under license, but if the crane has not passed every         inspection, the Health and Safety Officer could impede its access to the job site. Read more


What are the risks of mobile cranes operation when working? What are the main causes of accidents and overturning with mobile cranes? Can service and maintenance checklist to prevent accidents and risk assessment breaches of mobile cranes at work, or is it more a matter of lack of training and awareness of operators and inspectors? The image of mobile cranes overturning worldwide should not be a trending topic, but much less frequent over the time. Training operation on every aspect related to the lifting procedure & safety, would undoubtedly help to that end.

The causes of mobile crane accidents in operation at the job site, can fit into two major groups: those that result from a defective risk assessment when moving, and those that usually happen with non-compliance of safety operation standards when cranes are working. In turn, the latter would be divided into two subgroups: those related to lacks of stability forcing the mobile crane to tip over and those having more to do with the strength of materials and fatigue in the main components of mobile cranes, mainly due to weak maintenance plans. Sometimes cranes involved in working accidents, have passed with flying colors the inspector’s exam and the scheduled maintenance checklist by the manufacturer of the machine.

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Apart from some minor brands in India, the biggest mobile crane Asian manufacturers are mainly from Japan and China. The oldest manufacturers, are the ones from Japan (names like Kato, Kobelco, Tadano…), so they are of course present all over the world; although Kato is practically well known for its truck crane models (25 ton, 35 ton, 50 ton,…) and Kobelco for its crawler lattice boom cranes. Whereas in the Asian market (India, Korea, Malaysia, Thailand, Indonesia, Singapore,…) they both are quite demanded brands, in Europe you can hardly find some Kato truck units and some Kobelco’s crawler ones. This is probably due to their short range of All terrain sizes. However, Tadano, the biggest   mobile crane manufacturer from Japan, plays now a relevant role in the European market, thanks mainly to its former acquisition of the German Faun production facilities in 1990, which allowed them to develop a comprehensive and price competitive list of AT models & sizes.

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Mobile crane manufacturers are not so numerous in the world. In fact, apart of the “big four” suppliers in Germany (Liebherr, Terex Demag Gmbh, Grove Manitowoc and Tadano Faun), only a few more brands in Europe & Asia (Zoomlion, Sany, Kato, Rigo, …) can de-sign some types of all terrain (AT’s) equipment of the newest technology. The largest mo-bile crane types, are practically limited to Liebherr (Ehingen), Terex Demag Gmbh (Zwei-brücken) and Grove Manitowoc.

Furthermore, the older largest mobile cranes brands like Gottwald and Krupp were also German manufacturers, which main factories were located in Germany. Krupp was taken over by Grove and Gottwald was by Demag Zweibrücken. These both fantastic mobile crane suppliers designed new extraordinary all terrain models, advanced in crane techno-logy, more than twenty years ago and the proof is many of them are still working out there. No doubt Krupp and Gottwald old types are highly appreciated and incredibly valued even at auctions. Gottwald is still nowadays, one of the most important brands of mobile harbor cranes worldwide. Krupp has not disappeared at all, as it is still a relevant part of the in-dustrial equipment holding ThyssenKrupp. Gottwald is now also part of the Terex Cranes division.

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