Local controls are mounted at each winch. The push button station inside the E-Crane cab is located for easy, convenient use; and a foot switch provides for hands-free barge hauling while the operator is simultaneously unloading the barges.
The control system uses dual vector drives, commanded by a PLC, to electrically co-ordinate both winches for maximum control over the barges. The operator’s station allows for independent or tandem operation of the winches. In tandem mode, the forward winch pulls rope in while the trailing winch pays rope out under controlled back tension. Winch motor speed is continually monitored by the PLC to eliminate freewheeling or loss of payout control. Acceleration and deceleration ramps with brake delays are programmed into the system to prevent shock loading of equipment.
The system also includes a NEMA 4 vector electrical control enclosure with all appropriate auxiliary equipment for the barge- haul drive control system, transformer, distribution panel and other electrical equipment.
Each E-Crane (equilibrium crane) and auxiliary equipment/systems are custom engineered for the customer’s specific application type, production goals and profit potentials. Thus the barge-haul system specifics may vary from application to application, depending also on peculiarities such as the river current speed, water level fluctuations, convoy sizes, space available for unloading equipment, and any harsh environmental conditions.
If the infrastructure, environmental issues or other circumstances do not favour a permanent installation, the complete material and barge handling package can be mounted on a floating material handling platform. In this case, E-Crane employs an experienced naval architect and qualified barge builders to assure compliance with all regulations and to assure a high quality, cost efficient offloading solution.
The floating material handling platform is the ideal solution where there is little or no existing infrastructure; when environmental issues prohibit the construction of a permanent
infrastructure; or if the flexibility of a floating, moveable system is desired.
E-Cranes excel and have unprecedented life in applications requiring heavy-duty production cycles and difficult working conditions. They are available in several models with outreach up to 150ft (45m) and duty cycle capacity up to 50 tonnes. Field service technicians and parts/service support for E-Crane equipment is available 24/7 from E-Crane locations in the USA and Europe.
E-Crane’s unique parallelogram design features a hydraulic pivoting, mechanically linked counterweight that keeps the E-Crane in near-perfect balance at all times. This reduces horsepower consumption and power requirements up to 50%. E-Cranes are available on pedestal, rail, crawler or barge mounts.
Whether you need to rebuild existing loading systems for bulk materials or bags, or find a combined system for bags and bulk material, the project managers and engineers at SMB International GmbH can offer a range of solutions.
Shiploading can be a very expensive business, especially in countries and regions that have plenty of rivers and other waterways, like Bangladesh, Russia or Vietnam. Variations in water levels on rivers exacerbate this issue. Labour costs for bag loading are very high; the process is very labour- intensive. This can result in extremely high demurrage costs.
SMB from northern Germany designs and builds automatic barge loading systems and shiploading systems for bags, for situations just like these. SMB’s systems use a loading arm with that can reach the entire hatch of the ship by slewing and luffing of the boom. A telescopic spiral chute extends the loading distance from the boom to the bottom of the ship. The telescopic loading head can be rotated in order to reach the entire freight area.
Numerous rivers make transportation advantageous, since wide routes can be covered by ship and it is not necessary to reload the cargo onto other vehicles. Furthermore, several loading-spots exist along the river.
SMB’s systems are used primarily for the transport of fertilizers, sulphur, rice, sugar and cement, as well as bulk materials and bags in general. Even heavy goods — for example
clinkers — are transported. SMB specializes in supplying combined loading systems for
bags and bulk materials. It uses a combination of conveying systems, making it possible for both loading types to work independently of each other.
SAVING MONEY BY MODERNIZING EXISTING SHIPLOADERSModern technology guarantees efficient operation of the systems, as well as fast loading and unloading. SMB has extensive experience in shiploading systems, as well as the redesign and modernization of existing systems by equipping them with modern controls. This enables remote system diagnostics and maintenance via the internet. It is also possible to achieve higher performances and capacities.
SMB’s main focus is always to guarantee optimized operations using the most modern procedures and well- thought-out systems.
When rebuilding systems, SMB’s engineers use existing steel-frameworks and install the latest and most modern technology into them. This procedure is particularly profitable as the main structure of the system will remain. According to the type of redesign, it can be carried out with only six weeks of system downtime. There are considerable advantages over investing in a whole new system, not least financial considerations.
The German company can carry out the entire modernization, all the way from conception and including project management and drawings, as well as all technical work. SMB operates worldwide.
Loading chutes – for flexible and versatile bulk material loading into barges, trains, ships and trucks
For many years, loading chutes have been used for loading dry bulk products into different vessels, such as tanker trucks, open trucks, wagons, ships, barges, etc. The strong point of the loading chute has always been the flexibility and the versatility in respect of being able to load all kinds of dry bulk materials, under virtually all thinkable and unthinkable conditions, and in nearly all known applications, i.e. in ports, in refineries, in cement and power plants, in grain terminals, etc.
For 25 years, Cimbria has produced and installed more than 12,000 loading chutes world wide, branded Moduflex, where the chutes are being used for loading anything from cobber concentrate over fly ash and cement to fertilizer, grain and food stuff. The chutes are used for loading ships and barges, open bag trucks and dumper trucks, stockpiling, tanker trucks and boats as well as train wagons. In many cases, the chutes are loading not only one specific product, but many products through the same chutes — for instance in port terminals. Other systems on the market only offers loading in open back trucks, and only with very specific and homogenous products.
This variety can only be supplied due to the versatility of the loading chute, based on the general construction and built-up. The Moduflex loading chutes are designed with a unique modular construction, which means that the loading chute can be adapted to suit 99% of all known applications within the dry bulk industry, although the parts being used are standard components. This ensures that the operators know that the loading chutes are based on well-founded, known technology that provides the user with quick access to standard spare parts, if a breakdown occurs, so down times are kept to a minimum. On top of this, the Moduflex loading chutes can cater for capacities up 4,000tph (tonnes per hour) in the standard configuration, and a drop of more than 25 metres. This flexibility can only be achieved using a loading chute, and is not possible in alternative loading systems.
Due to the fact that Cimbria manufactures several hundreds of Moduflex loading chutes every year, the price becomes very attractive, considering the price-quality relationship, and very low life cycle cost for the user. Installation cost of the loading chutes is negligible, as it only requires mounting the chute to the flange of the inlet with a number of bolts and connecting it to power (and pressurized air if the chute is with integral filter).
The Moduflex loading chutes can of course be used in light duty industries for loading grain, bran, feed stuff, etc., but also in the heavy duty industries for loading cement, limestone, fly ash, clinker, minerals, etc. Again this versatility is founded in the ability to construct the various parts of the chute in e.g. high density polyamides, abrasive resistant steel, stainless steel, liners in Vautid and/or ceramic compound materials. Furthermore, loading of products with larger particle sizes or very low densities and little structure are completely impossible to load, except through a loading chute. No other loading system can offer neither the same degree of adaption to specific needs of the users, nor the same safety and durability in one piece of equipment.
The proof of this point becomes even more evident when looking at toxic products, or products that need to be loaded in a closed system (food and chemicals), as this again is only possible using a loading chute. The demands of food safety and cleanliness within the chemical industry makes it impossible to load products as for instance sugar with any ‘open’ system, that exists on the market. The risk of contamination loading any product for human consumption and almost any chemical base materials in non-sealed systems is unacceptable and in some case dangerous to health. GMO products are another example of material that needs to be loaded within totally concealed systems. In order to avoid such contamination, a closed system with a closing device at the outlet that ensures an active sealing during loading and plugging when the chute is not in use, is required. The avoidance can be achieved by using accessories, FlexClose and FlexSeal, which are available for the Moduflex loading chutes.
Looking at it from a different point of view, the overall purpose of the loading chute is to ensure a dust free loading of the above-mentioned products. The environmental authorities in more and more countries are imposing strict legislation on environmental protection, and enforces these laws vigorously.This means that the ‘duties’ of loading involves 1) protecting the natural environment [air, water, soil], 2) protecting the surrounding [‘neighbours] environment and 3) the working environment [health and safety]. There is no argument against the fact that only loading chutes are able to fulfil all these tasks, and truly provide a dust free situation. Although other systems claim to do so, dust and particles will inevitable escape in the space between the outlet of the material provider (a silo or similar) and the inlet of the chute, e.g. a hopper, a hose or similar. Looking at the products mentioned above, they all have the common characteristic, that they create dust during loading. This dust needs to be confined and dealt with in a safe and efficient way. This objective can only be secured in a well aspirated loading chute, which is either connected to a separate filter or is provided with an integral filter.
The third aspect of modern loading is the varied
environments where loading takes place. In some case the loading does take place inside, in nice enclosed surroundings, but the vast majority of loadings are done outside, where wind, sun and humidity affect the material being loaded and the loading equipment. As an example, if loading is done through a hopper system, the wind will seriously affect the free falling product, creating dust problems, and if loading is done using a simple hose or bag, the humidity in the air will affect the product and cause disruptions in the loading procedure.
The conclusion can therefore only be, that loading chutes are, for now and for the years to come, the only alternative within loading systems where you combine flexibility and versatility with efficient loading, and at the same time adhere to the environmental legislation and work safety, that is a must for companies today dealing in loading and transportation of dry bulk commodities. Alternative systems have such a limited usage, that they can only be justified in very few applications, where the conditions and the product are so homogenous, that
they will work to the satisfaction of the users. Cimbria Moduflex has built-up a vast experience — due to the huge installed base — within loading of all kinds of dry bulk materials.This means that whenever it is faced with ever more stringent environmental legislation and/or new demands from companies, it can draw from this experience and very quickly adapt to fulfil these demands.
The Moduflex loading chutes are designed and sold by Cimbria Bulk Equipment A/S, a part of the Cimbria Group of Companies. CIMBRIA was established in 1947 and is today an international organization with 600 employees in 15 companies throughout the world. Cimbria offers equipment and processing plants for the grain and seed industry and transport and conveying equipment for bulk handling.