公开(公告)号：US20230021966A1

公开(公告)日：2023-01-26

申请号：US17871808

申请日：2022-07-22

Applicant: STONEAGE, INC.

Inventor： Jeffery R. BARNES ,  Cooper HANLEY ,  John L. KRAUSER ,  Daniel SZABO

IPC: B65H51/10 ,  B65H51/14

Abstract: An apparatus for driving a flexible lance hose into and out of tubes in a heat exchanger tube sheet includes a housing and an upper endless belt drive assembly and a lower endless belt drive assembly spaced apart by a gap for receiving a flexible lance hose therein. One of the drive assemblies is fixed to the housing. The other drive assembly is movable within the housing toward and away from the one endless belt drive assembly. The apparatus further includes a drive motor fastened to the housing configured to engage at least one of the upper and lower endless belts and drive a flexible lance hose disposed in the gap.