Heating – Work chamber having heating means – Having means by which work is progressed or moved mechanically
Patent
1982-11-05
1984-08-21
Camby, John J.
Heating
Work chamber having heating means
Having means by which work is progressed or moved mechanically
198774, 432 3, F27B 914, F27D 116, B65G 2500
Patent
active
044667922
ABSTRACT:
The invention relates to a walking beam furnace wherein the walking beams can be lowered beyond their operative stroke to a maintenance position. The actuating device for the walking beams comprises a hydraulic, pneumatic or electric assembly (10) and a wheel (16) rotatably mounted around a stationary axis and a preferably flexible drive-transmitting member (20) which is formed, for example, by a cable, a sprocket chain or the like, and is pivotably connected to said wheel (16). The flexible drive-transmitting member can rest on the peripheral surface of the wheel (16) both during the operative stroke of the walking beams (7) and during their lowering stroke to the maintenance position. The ramps, whereon the lifting rollers (6) for the walking beams (7) run, comprise a less-inclined upper stretch (3) and a successive more-inclined stretch (4). However, the drive-transmitting member can rest, during the operative stroke, on a support member which is co-axial with the wheel and has a smaller diameter than the wheel. In the latter case, the ramps whereon the lifting rollers (6) move may have a uniform slope.
REFERENCES:
patent: 4116619 (1978-09-01), Beck
patent: 4330262 (1982-05-01), Krauzl et al.
Ballabene Corrado
Dotsch Horst
Camby John J.
Italimpianti Societa Italiana Impianti P.A.
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