B - Operations – Transporting – 65 – G
Patent
B - Operations, Transporting
65
G
B65G 15/08 (2006.01) B65G 15/60 (2006.01) B65G 23/44 (2006.01)
Patent
CA 2311955
A belt conveyor has a continuous belt mounted within a tube for supporting a transportation run of the belt with the return run of the belt being guided along an underside of the tube. An undercarriage supports the tube and causes raising and lowering movement of at least the discharge end of the tube. A drive roller is driven by a drive input with each mounted on the undercarriage at positions thereon which remains substantially stationary as the tube is raised so that the input remains in a fixed position as the tube is moved in said movement and so that the drive roller is fixed relative to the input drive member to receive drive therefrom without necessity for adjustment as the duct is moved. The drive roller is spaced from the return run of the belt on the underside of the tube and the belt includes a divergent portion having two runs extending from the return run to and from the drive roller to receive drive therefrom. Tension in the belt is compensated by an arrangement in which at least one idler roller is provided at the drive roller around which the belt passes so as to wrap the belt around the drive roller, the idler roller being adjustable in position relative to the drive roller to effect tensioning of the belt. The position of the idler roller is adjusted by a hydraulic cylinder attached to an accumulator of hydraulic fluid arranged to receive a fluid at a predetermined pressure such that the idler roller is pulled in a direction to apply tension to the belt at a predetermined force thus maintaining a predetermined tension in the belt while accommodating changes in belt length.
Epp Dwayne S.
Epp Richard J.
Battison Williams Dupuis
Epp Dwayne S.
Epp Richard J.
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