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The mobile crawler crane is particular crane made with either a lattice boom or a telescopic boom. These move upon the crawlers tracks. As this crane is self-propelled, it could move around particular work sites without the need for much set up. Because of their enormous size and weight, crawler cranes are are hard to transport from one location to another and are fairly costly. The crawler's tracks provide stability to the equipment and allow the crane to work without the use of outriggers, although, there are several units that do utilize outriggers. Furthermore, the tracks provide the machine's movement.
Early Mobile Cranes
The first mobile cranes were initially mounted to train cars. They moved along short rail lines which were specially built for the project. Once the 20th century arrived, the crawler tractor evolved and this brought the introduction of crawler tracks to the construction business as well as the agricultural industry. Not long after, the crawler tracks were adopted by excavators and this further showcased the versatility of the machine. It was not long after before manufacturers of cranes decided that the crawler track market was a safe bet.
The Very First Crawler Crane
In the nineteen twenties, Northwest Engineering, a crane manufacturer within the United States, mounted its very first crane on crawler tracks. It described the new machinery as a "locomotive crane, independent of tracks and moveable under its own power." By the middle part of the nineteen twenties, crawler tracks had become the chosen means of traction for heavy crane operations.
The Speedcrane
The Moore Speedcrane, developed by Charles and Ray Moore of Chicago, Illinois was one of the first attempts to copy the rails for cranes. Manufactured within Fort Wayne, Indiana, the Speedcrane was a wheel-mounted, steam-powered, 15 ton crane. During the year 1925, a company referred to as Manitowoc Shipbuilding Co, from Manitowoc, Wisconsin recognized the tracked crane's marketability and potential. They decided to team up with the Moore brothers so as to manufacture it and go into business.
The Crown RC 5500 Series was built on a vision that concentrates on realistic challenges in the workplace. This innovative unit features intelligent technology and best-in-class comfort and ergonomics. Keeping the operator safe and comfortable generally results in more efficiency.
3-Wheel Stand-Up Counterbalanced Truck
The company manufactures a 3-Wheel Stand-Up Counterbalanced Truck in capacities varying from three thousand, 3500\three thousand five hundred and 4000 lb. capacity.
Performance Versatility
Crown's RC 5500 have been designed to work efficiently in a busy work environment. Whether it is operating in an aisle or on the dock, this model achieves greatness. It has been designed to offer the operator unparalleled ride control, unmatched visibility and the best ergonomics. The exclusive FlexRide technology offered by Crown provides a suspended floorboard so as to eliminate a lot of the vibration and shock that operators have to work with every day. Interestingly enough, a lot of the competitor's sit-down truck models could not match the reduced impact levels offered by the RC 5500 Series.
Visibility - From a side-stance position in both directions of travel, this unit provide maximum visibility for the operator. A low-profile provides a clear view mast as well a sculpted chassis enables the operators to be able to clearly see all around the truck, the fender and the fork tips. This optimum view improves overall safety and lessens damage.
Speed - Through Access 1 2 3 Technology combined with the latest AC traction control, top travel speeds are amongst the best in the industry and achieved. Performance levels can be custom tuned to be able to match the application requirement or the operator's level of skill.
Operator Safety & Comfort
The suspended floorboard provided by Crown's FlexRide greatly enhances overall work performance by improving comfort and exhaustion is significantly lessened. The constant vibration and shock could cause severe operator exhaustion for those exposed to those motions on a daily basis especially during travel over expansion joints, rough grounds and dock plates.
