DEVICE FOR DEVELOPMENT OF SOIL Russian patent published in 2016 - IPC E02F7/02 E02F5/02 

FIELD: construction equipment.

SUBSTANCE: invention relates to devices of trenchers, rotor and mining excavator types. Device for development of soil includes installed on tray with possibility of interaction with it by means of hinge working member to housing and sealed chamber, in which there is drum with hose wound thereon, and system to feed into working fluid chamber. End of hose is unscrewed inside out to interact with housing of working element and is fixed in chamber opening. In working element conical cavity for arrangement of hose is made. At that, working element has toroid-shaped element (tore) from elastic non-permeable shell with helically twisted walls and flexible filler. Tore is located in conical cavity, and pan-stop is installed with possibility of interaction with lower wall of toroid. In places of contacts of upper and lower parts of tore with working element in conical cavity there are two cylindrical rollers with width equal to that of tore mounted on axes attached to side walls of conical cavity. Aggregate of toroid is cylindrical insert with central hole in longitudinal axis of diameter exceeding that of screw-like twisted inner walls of toroid. Surface of insert is coated with antifriction lubricant. Insert itself is made two-layered from elastically compressed outer layer and rigid tubular inner layer, which forms non-deforming central hole of insert.

EFFECT: technical result is increase in reliability of device operation.

1 cl, 1 dwg