| Powerful crawler equipment with a blade is called a | | | | important improvements included in the bulldozer |
| bulldozer. Even though any heavy engineering vehicle | | | | development. |
| is known by the term "bulldozer", practically the term | | | | More precise blade manipulation was made possible |
| refers only to a tractor with dozer blade. | | | | by hydraulic systems. To loosen soils which were |
| Earlier tractors were used to plough the fields and | | | | rocky, or for pavement bread-up, a ripper claw was |
| the first bulldozer was adapted from this tractor. | | | | also added to bulldozers. |
| During the First World War a bulldozer was used as | | | | Throughout the world, these durable and tough |
| an armoured tank because of its versatility in grounds | | | | machines are used by construction units of the |
| which were soft. | | | | military, they are also the preferred equipment for |
| A big thick metal plate is fixed on the front of the | | | | civil construction. Some of the other uses of |
| bulldozers for use in earthmoving jobs, raising dams | | | | bulldozers include demolition of enemy structures and |
| and digging canals. As the tractor advances, the blade | | | | clearing mines. |
| in front removes layers of soil. To move coal in the | | | | The tracks on the bulldozers give good hold on |
| coalmines, to move large boulders or cut tree | | | | ground and easy mobility over rough terrain. In order |
| stumps, various specialized blades are used. Earlier, | | | | to prevent it sinking in muddy or sandy ground, the |
| the driver used to sit on top of the bulldozers, which | | | | wide tracks help the distribution of the weight of the |
| lacked a cabin. When powered down bulldozers were | | | | bulldozer over large area. The torque divider in the |
| introduced in the 1930's it became the excavation | | | | bulldozer converts its power into ability to drag. |
| equipment preferred by contractors. Find more info | | | | The power of the bulldozer can be gauged by its |
| at | | | | ability to tow tanks weighing around seventy tons. |
| When equipment was needed to execute large-scale | | | | Areas of obstacles such as shrubbery, and burnt |
| earth works, several bigger models were | | | | vehicles can be cleared easily. |
| manufactured by various engineering firms. These | | | | Over time, bulldozers have been further modified to |
| machines were noisy, large and powerful and that's | | | | become a new machine capable of working in various |
| where it got its name "bulldozer". | | | | ways which was not possible with the original |
| More powerful engines, better tracks, more reliable | | | | bulldozer, for instance a hydraulic arm and a large |
| drive tracks, raised cabins and instead of the usual | | | | bucket, which can be raised or lowered to scoop |
| cable operations, hydraulic arms were some of the | | | | earth and load it into trucks. |
