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Excavator with grapple Hydraulic excavators now perform tasks well beyond bucket excavation. With the advent of hydraulic-powered attachments such as a breaker , a cutter, a grapple or an auger ,a crusher and screening buckets [ 11 ] the excavator is frequently used in many applications other than excavation.
A throwing grapple, kaginawa (or "grappling hook" ) is a multi-pronged hook that is tied to a rope and thrown/launched to catch a grip, as on a parapet or branch of a tree. [1] It may also be used in a boat to "drag" the bottom of a waterway to hook debris or to find missing objects. Skid-steer grapple Grapple truck
Skid-steer loaders are sometimes equipped with tracks instead of the wheels, and such a vehicle is known as a compact track loader. [7] Skid steer loaders, both wheel and track models, operate most efficiently when they are imbalanced – either the front wheels or the back wheels are more heavily loaded.
The winch or grapple holds the trees while the skidder drags them to a landing area. Cable skidders are more labor-intensive than grapple skidders because someone (the operator or a second person) must drag the winch line out to the logs and hook them up manually. Nowadays, cable skidders are less popular than in the past.
Grapple's propulsion machinery provides a bollard pull (towing force at zero speed and full power) of 68 tons. [5] [6] The centerpiece of Grapple's towing capability is an Almon A. Johnson Series 322 double-drum automatic towing machine. Each drum carries 3,000 feet (910 m) of 2.25-inch-diameter (57 mm) drawn galvanized, 6×37 right-hand lay ...
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