A drilling rig is used to drill, that means dig holes in the ground. There are vertical drilling rigs and horizontal drilling rigs. The vertical drilling rig is used to find water or dig foundations. The horizontal drilling rig is used for underground works (gas, sanitation). The main element of the drilling rig is the drilling head or auger ; it can be equipped with a piston coring to take samples.
The pilling rig is used on construction sites to push stakes to create foundations or strengthen works. Before, the pilling rig was operated by a group of people pulling a rope ; it was used for stilts constructions. Nowadays, the vibrators and hydraulic hammers make it possible to push different types of stakes in the ground : wooden stakes, steel stakes or concrete ones.
Trencher is a machine used to dig trenches during wiring or drainage operations. There are wheel trenchers or chain trenchers. The wheel trencher, equipped with teeth, is faster and more cost-effective. The chain trencher is often equipped with belt to get rid of rubbles. There also are mini trenchers for precise work.
Look at the ads of used drilling rigs, pilling rigs and trenchers from Vermeer, Atlas Copco, Bauer, Klemm, Soilmec et Ditch-Witch.
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