INTER-TUBE TRANSPORT UNIT Russian patent published in 2002 - IPC

FIELD: servicing pipe lines of large diameters. SUBSTANCE: proposed transport unit includes chassis having circular flow-through housing with open butts, suspension units for bearing wheels which are secured on said housing for holding the chassis in the pipe line axis; it includes also sealing members on outer surface of circular housing for forming non-tight circular compartment for equipment. Transport unit is provided with cylindrical housing with hermetic compartment for equipment mounted inside circular flowthrough housing along its axis; circular housing is provided with front and rear frames connected with cylindrical housing. Bearing wheel suspension units are secured on end surface of front or rear frame and each of them includes torsion shaft with two end mounting brackets secured on frame; swivel frame found on torsion shaft is used for attachment of bearing wheel; it has form of triangle in plan. First end of torsion shaft is secured in first mounting bracket; second mounting bracket is provided with first sliding bearing and second end of torsion shaft extends beyond said sliding bearing. Base of swivel frame is provided with two ears located on opposite ends of base; first ear is secured on second end of torsion shaft and second ear is provided with second sliding bearing and is located in center of torsion shaft. EFFECT: extended technological capabilities. 7 cl, 4 dwg