Small crane trucks (with a lift capability of 5,000 lbs or less) are available in two designs. The first is a fixed boom (davit type) crane. The second is a crane with an elevating (articulated) arm. On a fixed boom crane, a winch is usually employed to do the lifting. The modern alternative is a crane with a pivoting (articulated) arm that lifts on the hook attached to its outer end.
Either type can be installed on service trucks such as flat decks, tire service, propane delivery and larger pick-up trucks.
Most operators consider an articulated crane the simpler of the two types to operate because he/she needs to focus on the movement of the boom tip hook and load movement. The operator of a winch equipped crane on the other hand, must pay attention to the winding of the winch line onto the drum as well as its movement through any sheaves.
An advantage of winch equipped cranes is that they can lift in a straight line, close to the column, while cranes with articulated booms lift through an arc of varying distance from the column.
However, because BIGMAX cranes feature booms that extend (telescope) as well as elevate hydraulically, they offer most of the advantages of winch equipped truck cranes without their operating complexities and extra costs.
Contact Drive Products for information and pricing on any TC model crane for sale – with or without winches.
The main advantage of a DC powered crane over a hydraulic crane on a boom truck is ease of installation. For example, since BIGMAX electric cranes come with their own battery operated power pack, the crane can be mounted on any vehicle including trucks, trailers, and boats which has an adequate battery and sufficient stability. No separate, often costly hydraulic system is required as on a hydraulic crane.
The main disadvantage of DC powered cranes on boom trucks is that, because it is battery operated, the crane has a limited duty cycle. While ideal for more occasional use, a battery powered crane can usually run for 5 minutes every 20 minutes or so, depending on the battery strength and whether the battery is being constantly charged.
For more information about an electric or hydraulic truck mounted crane, check out Drive Products, one of the leading crane companies in North America, on the website www.bigmaxcranes.com.