Craig E. Murray,Harold Mark Stock,Kevin S. Schwinn
申请号：
US16299933
公开号：
US20200288638A1
申请日:
2019.03.12
申请国别(地区):
US
年份:
2020
代理人:
摘要：
A sieve for a cleaning system of an agricultural harvester includes: a sieve frame defining a top side； adjustable louvers carried by the sieve frame and defining apertures； an adjustment bar coupled to the adjustable louvers such that displacement of the adjustment bar changes a size of at least some of the apertures； and an adjustment assembly. The adjustment assembly includes: an adjustment arm coupled to the adjustment bar and pivotable relative to the sieve frame such that pivoting of the adjustment arm about a pivot axis displaces the adjustment bar. The adjustment arm carries a locking pin. A shaft is disposed on the top side and coupled to the adjustment arm. Displacement of the shaft from a first position to a second position causes a corresponding displacement of the locking pin from a locking position to an adjustment position.
