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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. Because this crane is self-propelled, it could move around particular work sites without the need for a lot of set up. Because of their enormous weight and size, crawler cranes are are difficult to transport from one location to another and are rather expensive. The crawler's tracks provide the machine stability and enable the crane to work without using outriggers, however, there are several units which do utilize outriggers. In addition, the tracks provide the equipment's movement.
Early Mobile Cranes
The first mobile cranes were initially mounted to train cars. They moved along short rail lines that were particularly made for the project. Once the 20th century arrived, the crawler tractor evolved and this brought the introduction of crawler tracks to the agricultural industry and the construction business. Not long after, the crawler tracks were adopted by excavators and this further showcased the machine's versatility. It was not long after when manufacturers of cranes decided that the crawler track market was a safe bet.
The First Crawler Crane
Around the 1920s, Northwest Engineering, a crane manufacturer within the USA, 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 preferred means of traction for heavy crane uses.
Developed by Ray and Charles Moore of Chicago, Illinois; the Moore Speedcrane was among the first to attempt to copy rail lines for cranes. Manufactured in Fort Wayne, Indiana, the Speedcrane was a wheel-mounted, steam-powered, fifteen ton crane. During the year 1925, a company known as Manitowoc Shipbuilding Co, from Manitowoc, Wisconsin recognized the potential and the marketability of the tracked crane. They decided to team up with the Moore brothers to be able to manufacture it and go into business.
Crown has made their RC 5500 Series to focus on the realistic challenges experienced in the workplace. This innovative unit features intelligent technology and best-in-class comfort and ergonomics. Keeping the operator comfortable and safe normally results in more efficiency.
3-Wheel Stand-Up Counterbalanced Truck
The 3-Wheel Stand-Up Counterbalanced Truck comes in three thousand, three thousand five hundred and 4000 pound capacity.
Crown's RC 5500 have been designed to work effectively in a busy work setting. Whether it is operating on the dock or in an aisle, this model achieves greatness. It has been made to provide the operator unparalleled ride control, unmatched visibility and the ultimate ergonomics. The exclusive FlexRide technology offered by Crown provides a suspended floorboard so as to eliminate much of the vibration and shock that operators should work with every day. Interestingly enough, a lot of the competitor's sit-down truck models could not match the lessened impact levels provided by the RC 5500 Series.
Visibility - From a side-stance position in both directions of travel, this unit offer 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 the fender, the fork tips and all around the truck. This optimum view enhances overall safety and reduces damage.
Speed - Through Access 1 2 3 Technology combined with the latest AC traction control, top travel speeds are among the best in the business and achieved. Performance levels are able to be custom tuned to be able to match the application needs or the operator's level of skill.
Operator Safety & Comfort
The suspended floorboard provided by Crown's FlexRide greatly enhances overall work performance by enhancing comfort and exhaustion is greatly reduced. The constant vibration and shock can result in severe operator fatigue for those exposed to those motions on a daily basis specially during travel over expansion joints, rough floors and dock plates.