Digger Derricks
While many think of bucket trucks when they think of utility trucks; digger derricks play an important role in infrastructure and construction. A Digger derrick is a hydraulic powered auger which can create a hole up to 30 inches round and more 10 feet deep. Drill rigs can perform a variety of tasks including: digging holes for replacement telephone and cable poles lifting and setting new poles in place digging out stumps digging wells turning screw anchors No matter who made your digger derrick or drill rig; you need a dependable source of replacement auger parts such … [Read more...]
History of Digger Derricks – Part II
Modern Digger Derrick If you had a chance to read History of Digger Derricks, Part 1, you know that a digger derrick is essentially a mobile machine with a digger derrick mounted on a truck chassis. It is extremely large due to the physical dimensions and heavy weight of the attached boom pedestal and booms, the hydraulic motor, auger, and accessories. The digger truck has a powerful engine to multiply the torque and control the hydraulic system, which in turn directs the rotational capacity of the auger. We gave a brief digger derrick history starting in the early days of … [Read more...]
History of Digger Derricks – Part I
Digger derricks are used mainly in the electrical, telecommunications, and cable fields, as well as in the construction industry. Derrick trucks feature an auger that drills the hole, and pole clamps to grasp the pole as it is being inserted. The main components of a digger derrick are the pedestal, the turntable, the booms, the cylinders for boom control, the outriggers or stabilizers, the digger motor, the auger and auger teeth, and the controls. From digging to lifting, these trucks are designed to literally do it all. The rotating hex-shaft auger is specifically designed to … [Read more...]
You Will “DIG” Power-Installed Screw Anchors
Once upon a time digging holes required way too much effort. Have you seen the old TV westerns where the Cartwrights and Barkleys sweated digging holes for fence posts? Well, I guess we’re showing our age?! The Barkleys became experts at soil conditions, equipment needed, and capacity requirements to get the holes dug. Somewhat related to post holes, installing earth anchors was once hard work. And the results were not always satisfactory. But then, in the 1950’s Hubbell Chance introduced the power-installed screw anchor (PISA©). Now the power of digging equipment is used to … [Read more...]