Excavators are heavy earth movement equipment that can be available over wheels or treads; this one is regarded as the standard in the industry. A conventional excavator generally has a long bucket arm connected to a pivoting cab that can rotate a full 30 degrees. The operator sits in the cab and from there he/she can be able to have visibility over the site. Excavators are utilized frequently to dig dirt or to lift heavy pieces including prefab pieces, pipes and other smaller equipment. The most common uses of an excavator are
- Material handling
- Digging of trenches, holes and foundations
- Brush cutting with hydraulic attachments<
- Rough grading
- Heavy lifting and placing of pipes
- River dredging
Backhoe loaders are much like tractors with a slight modification : they contain a flexible , shovel in front of the equipment , and a small container in the back of the loader used for digging . Backhoe loaders are consider medium sized heavy equipment for smaller jobs , and with minimal space to perform the operations . The can move dirt , backfill , dig trenches and place smaller pipes into place . One of the best features of backhoe loaders d they are tire mounted and they can be used in urbanized areas and patios .
Bulldozers are believed probably the strongest and toughest heavy equipment used in the construction industry . It is strong and extremely heavy equipment used to move dirt along large open tracts of land . Bulldozers have a wide flat blade in front that can be controlled using two hydraulic pistons allowing the blade to be moved in limited angles or depths . They are usually used to push piles of earth and for rough / fine grading depending on the size of the bulldozer . Its weight can be used to crush larger boulders among other actions .
A trencher is a heavy equipment used to dig trenches on which pipes can be laid down . There are many trencher models , walk-behind modules , small size operated trenchers or heavy trenching equipment that can be used to trench pavement asphalt and other hard surfaces . The trencher has a conveyor system that carries the excavated material and locates it next to the trench been made . Trenchers can use different digging implements depending on how deep they must trench and how hard is the material to be cut . Trenchers must be handled with extreme care because they are very dangerous equipment .
Motor graders are heavy equipment used to fine grade and move small amounts of dirt. They have a long blade that can be adjusted to meet certain angles to create a flat surface. This equipment can normally have a second blade in front of the front axle and in some instances can be used for underground mining. They are normally used to fine grade dirt or gravel roads, or to prepare the base course before placing asphalt. Graders can be used to produce sloped surfaces or drainage ditches with shallow V-shaped cross sections.