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Excavators are heavy construction equipment primarily consisting of a boom, dipper (or stick), bucket, and cab on a rotating platform known as the "house" [1] - although the largest form ever, the dragline excavator, eliminated the dipper in favor of a line and winch. The modern excavator's house sits atop an undercarriage with tracks or wheels ...
Power shovels are a type of rope/cable excavator, where the digging arm is controlled and powered by winches and steel ropes, rather than hydraulics like in the modern hydraulic excavators. Basic parts of a power shovel include the track system, cabin, cables, rack, stick, boom foot-pin, saddle block, boom, boom point sheaves and bucket.
A bucket wheel excavator (BWE) consists of a superstructure to which several more components are fixed. The bucket wheel from which the machines get their name is a large, round wheel with a configuration of scoops which is fixed to a boom and is capable of rotating. Material picked up by the cutting wheel is transferred back along the boom.
Steam shovel. A Marion Power Shovel Company steam shovel excavating the Panama Canal in 1908. A steam shovel is a large steam-powered excavating machine designed for lifting and moving material such as rock and soil. It is the earliest type of power shovel or excavator. [citation needed]
A backhoe[a] is a type of excavating equipment, or excavator, consisting of a digging bucket on the end of a two-part articulated arm. It is typically mounted on the back of a tractor or front loader, the latter forming a "backhoe loader" (a US term, but known as a "JCB" in Ireland and the UK). [1] The section of the arm closest to the vehicle ...
Compact excavator. A Bobcat compact excavator. A compact or mini excavator is a tracked or wheeled vehicle with an approximate operating weight from 0.7 to 8.5 tonnes. [1] It generally includes a standard backfill blade and features independent boom swing. Hydraulic excavators are somewhat different from other construction equipment in that all ...
The Bagger 288 bucket-wheel excavator, beside a Caterpillar Inc. model 824H front end loader for size comparison. The excavating head itself is 21.6 m (70 ft 10 in) in diameter and has 18 buckets each holding 6.6 cubic metres (8.6 cu yd) of overburden. By February 2001, the excavator had completely exposed the coal source at the Tagebau Hambach ...
Crawler excavator. A crawler excavator, also known as a track-type excavator or tracked excavator, is a type of heavy construction equipment primarily used for excavation and earthmoving tasks. It is characterized by its tracked undercarriage, which provides superior mobility and traction compared to wheeled excavators, especially in soft ...