Drive system

Details Drive system Drive system

1992-08-10

1994-03-22

Bui, Thuy M.

Endless belt power transmission systems or components

Means for adjusting belt tension or for shifting belt,...

474111, F16H 708

Patent

active

052959180

ABSTRACT:
A rotary arm sewage treatment bed has its rotary arms driven by an electrical drive system. The drive system comprises a driving ring (7) to which the arms are secured. The drive ring is driven by a friction belt (8), from a drive wheel (10). The drive wheel (10) is mounted on a pivoted carriage (18). A compressor (30) operates a piston/cylinder (36)/(34). In normal use, the piston (36) acts on the carriage (18) to cause tensioning of the belt (8), and thus enable drive. In the event of a supply failure, the piston is retracted by a return spring and the drive is disengaged, the carriage being pivoted such that the drive wheel is no longer in a position to tension the belt (8). The arms are then free to rotate under the reaction force of the sewage emitted, until the power supply is restored.

REFERENCES:
patent: 5052547 (1991-10-01), Doi
patent: 5181888 (1993-01-01), Takahashi et al.

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