Tensioning car for flexible continuous tram

Details Tensioning car for flexible continuous tram Tensioning car for flexible continuous tram

1991-05-15

1993-03-02

Valenza, Joseph E.

Conveyors: power-driven

Conveyor frame or casing

Adjustable conveyor frame or casing

198303, B65G 2100

Patent

active

051901471

ABSTRACT:
A tensioning car for a flexible continuous tram comprises a center beam structure adapted to support a segment of the transport belt and a pair of side beam structures, one on each side of the center beam structure and each having coupling devices for coupling it to an adjacent car of the tram. Guide bars join the side beam structures for limited movement relative to each other lengthwise of the tram and also support the center beam structure. Chain guides on each of the beam structures guide the crawler chain of the tram. A pair of hydraulic piston/cylinders, one adjacent each end of the tensioning car, are coupled between the side beam structures. A constant pressure accumulator connected to each cylinder supplies a hydraulic fluid under a substantially constant pressure to the respective cylinder so that the cylinders urge the side beam structures resiliently away from each other and thereby maintain a generally constant tension in the crawler chain.

REFERENCES:
patent: 2951580 (1960-09-01), Slomer
patent: 3557937 (1971-01-01), Kahre
patent: 4476975 (1984-10-01), Densmore
patent: 4852724 (1989-08-01), Bodimer
patent: 4865185 (1989-09-01), Bodimer

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