BELT TRANSMISSION MECHANISM FOR COOLING TOWER BLOWER

WIPO Patent Application WO/2021/201248

A1

A belt transmission mechanism for a cooling tower blower wherein a flat belt is used in the transmission mechanism for the blower, a tension adjustment unit is adopted for suppressing meandering of the belt, a separate belt guide part is provided in the vicinity of a driven-side pulley, thereby preventing deterioration of and damage to the belt even when a state of reverse travel of the belt continues for a long period of time. For a belt (13), which is a flat belt, a tension adjustment unit (14) prevents loosening of the belt (13) and suppresses meandering of the belt (13) during travel. In addition, a belt guide part (15) is positioned in the vicinity of a driven-side pulley (12), and the uppermost position of a guiding surface thereof is aligned with a lower-limit position on the outer-circumferential surface of the driven-side pulley in a possible travel range of the belt; thus, it is possible for the belt guide part (15) to suitably restrict an excessive lowering of the belt (13) contacting each pulley, that is, a driving-side pulley and the driven-side pulley, even in a situation in which an impeller is in a state of reverse rotation and the meandering suppression control carried out by the tension adjustment unit (14) is ineffective, and the maintenance load can be reliably reduced by, for example, reducing the frequency of replacement of the belt.

KIYOKUNI EIJI (JP)
KUMASHIRO AKIFUMI (JP)
KARUBE ATSUSHI (JP)
YOSHIMI TAKEMASA (JP)

PCT/JP2021/014221

October 07, 2021

April 01, 2021

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KUKEN KOGYO CO LTD (JP)
BANDO CHEMICAL IND (JP)

F16H7/12

JP2019094940A	2019-06-20
JPS5080674U	1975-07-11
JPH061891U	1994-01-14

HIRAI Yasuo (JP)

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