Apparatus and method for padding the ground below a duct using excavated soils, equipment for compacting soil below a duct, and a soil-compacting mechanism

The invention relates to the field of technology and hardware for earthmoving operations predominantly in replacement of the insulation coating of ducts, performed at the design elevations of ducts in the trench, predominantly without interrupting the operation of the insulation coating replacement, and more particularly to the methods and devices for padding the ground below a duct using excavated soil, equipment for soil compacting below a duct and soil compacting mechanisms. Furthermore, the invention can find an application in earth-moving operations in construction of new underground ducts. The present invention relates to a method for padding ground below a duct () using excavated soil (), wherein said method uses a vehicle () that comprises a soil feeding organ (), a transport organ () and soil compacting organs (). The vehicle moves along a ground path () which is formed by the soil feeding organ () as it collects excavated soil (). This method allows for a reliable orientation of the soil compacting organs () relative to the duct (), wherein said compacting organs apply a force on the soil previously deposited in the trench (). This invention also relates to a device which is used for padding ground below a duct () and comprises a device () for hanging a soil-compacting mechanism () to the vehicle (). The device () includes a disconnection mechanism () that enables the cyclic displacement of the rammer-type compacting organs () in the displacement direction of the vehicle (). When compacting soil, the working members () of the compacting organs () are capable of cyclic downward displacement towards each other while simultaneously rotating in a direction in which the angle they define becomes smaller. This system may be used for efficiency compacting soil below a duct () while minimising the stress applied by the soil to the surface of said duct ().