公开(公告)号：US20240049645A1

公开(公告)日：2024-02-15

申请号：US17819010

申请日：2022-08-11

申请人： DEERE & COMPANY

发明人： GARRICK W. HERBST ,  MICHAL KOCIS ,  MARTIN KOLLAR ,  JESUS LANDINEZ

IPC分类号： A01F12/26 ,  A01F12/28

CPC分类号： A01F12/26 ,  A01F12/28

摘要： A concave assembly for an agricultural combine harvester comprises a concave, a cover, and a cover actuator. The concave comprises a grate. The cover has an opened position uncovering at least a portion of the grate to allow crop flow through the at least the portion of the grate and a closed position covering the at least the portion of the grate to block crop flow through the at least the portion of the grate. The cover actuator comprises a four-bar linkage and moves the cover between the opened position and the closed position.