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The mobile crawler crane is specific crane designed 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. Due to their enormous weight and size, crawler cranes are are hard to transport from one location to another and are fairly costly. The crawler's tracks provide stability to the machine and enable the crane to function without using outriggers, however, there are some models which do use outriggers. Also, the tracks provide the machine's movement.
Early Mobile Cranes
Originally, the very first mobile cranes were mounted to train cars and move along specially built short rail lines. Once the 20th century arrived, the crawler tractor evolved and this brought the introduction of crawler tracks to the agricultural business as well as the construction business. Not long after, excavators adopted the crawler tracks and this further showcased the machine's versatility. It was not long after when crane companies decided that the crawler track market was a safe bet.
The Very First Crawler Crane
Northwest Engineering, a crane company within the United States, was the first to mount its crane on crawler tracks during the nineteen twenties. It described the new machine 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 uses.
The Speedcrane
Developed by Ray and Charles Moore of Chicago, Illinois; the Moore Speedcrane was amongst the first to attempt to copy rail lines for cranes. Manufactured in Fort Wayne, Indiana, the Speedcrane was fifteen ton, steam-powered, wheel-mounted crane. During nineteen twenty five, a company known as Manitowoc Shipbuilding Co, from Manitowoc, Wisconsin recognized the marketability and the potential of the tracked crane. They decided to team up with the Moore brothers in order to manufacture it and go into business.
The Crown RC 5500 Series was built on a vision that focuses on realistic challenges within the workplace. This innovative model features best-in-class ergonomics and comfort and intelligent technology. Keeping the operator safe and comfortable normally results in more productivity.
3-Wheel Stand-Up Counterbalanced Truck
The 3-Wheel Stand-Up Counterbalanced Truck comes in three thousand, 3500 and four thousand pound capacity.
Performance Versatility
The Crown RC 5500 excels in a busy work environment. This unit achieves greatness whether it is operating in an aisle or on the dock. It is designed to offer the operator unparalleled ride control, unmatched visibility and the best ergonomics. The exclusive FlexRide technology offered by Crown offers a suspended floorboard so as to eliminate much of the shock and vibration which operators must work with each and every day. Interestingly enough, many of the competitor's sit-down truck models are unable to match the reduced impact levels provided by the RC 5500 Series.
Visibility - From a side-stance position in both directions of travel, this model provide maximum visibility for the operator. A low-profile offers a clear view mast as well a sculpted chassis allows the operators to be able to clearly see the fork tips, all around the truck and the fender. This optimum view enhances overall safety and reduces damage.
Speed - Top travel speeds are amongst the best in the industry and achieved through Access 1 2 3 Technology combined with the newest AC traction control. Levels of performance can be custom tuned in order to match the application needs or the operator's level of skill.
Operator Safety & Comfort
The suspended floorboard provided by Crown's FlexRide significantly enhances overall work performance by improving comfort and fatigue is greatly reduced. The continuous vibration and shock could cause severe operator fatigue for those exposed to those motions everyday particularly during travel over rough floors, dock plates and expansion joints.
