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The mobile crawler crane is particular crane made with either a telescopic boom or a lattice 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 huge size and weight, crawler cranes are are difficult to transport from one place to another and are rather pricey. The crawler's tracks offer stability to the machinery and allow the crane to work without using outriggers, however, there are several units which do use outriggers. As well, the tracks provide the equipment's movement.
Early Mobile Cranes
Originally, the first mobile cranes were mounted to train cars and move along specially designed short rail lines. Once the 20th century arrived, the crawler tractor changed and this brought the introduction of crawler tracks to the agricultural industry and the construction industry. Not long after, the crawler tracks were adopted by excavators and this further featured the equipment'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
Around the nineteen twenties, Northwest Engineering, a crane company within the USA, mounted its very first crane on crawler tracks. 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 preferred means of traction for heavy crane uses.
The Speedcrane
Developed by Ray and Charles Moore of Chicago, Illinois; the Moore Speedcrane was among the first to attempt to copy rail lines for cranes. Made within Fort Wayne, Indiana, the Speedcrane was a wheel-mounted, steam-powered, 15 ton crane. In the year 1925, a company called 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.
Crown has designed their RC 5500 Series to concentrate on the realistic difficulties faced within the workplace. This ground-breaking unit features intelligent technology and best-in-class comfort and ergonomics. Keeping the operator comfortable and safe generally results in more productivity.
3-Wheel Stand-Up Counterbalanced Truck
The company produces a 3-Wheel Stand-Up Counterbalanced Truck in capacities varying from 3000, 3500\three thousand five hundred and four thousand lb. capacity.
Performance Versatility
The Crown RC 5500 excels in a busy work setting. This unit achieves greatness whether it is operating in an aisle or on the dock. It is made to provide the operator unparalleled ride control, unmatched visibility and the ultimate ergonomics. The exclusive FlexRide technology provided by Crown provides a suspended floorboard so as to eliminate much of the vibration and shock that operators have to work with on a daily basis. Interestingly enough, many of the competitor's sit-down truck units can not match the lessened impact levels provided by the RC 5500 Series.
Visibility - Maximum visibility is offered for the operator from a side-stance position in both directions of travel. A low-profile offers 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 newest AC traction control, top travel speeds are among the best within the industry and achieved. Levels of performance could be custom tuned to be able to match the operator's level of skill or the application requirement.
Operator Safety & Comfort
The suspended floorboard offered by Crown's FlexRide significantly enhances overall work performance by enhancing comfort and fatigue is greatly reduced. The continuous vibration and shock can lead to severe operator fatigue for those exposed to those motions on a daily basis especially during travel over rough floors, dock plates and expansion joints.
