公开(公告)号：US20220346299A1

公开(公告)日：2022-11-03

申请号：US17242832

申请日：2021-04-28

申请人： Deere & Company

发明人： Cary S. Hubner ,  Gaurav Chakraborty ,  Matt D. Bartelson

IPC分类号： A01B61/04

摘要： Agricultural machines and implements have a need to adapt to changing environments. A closing system for an agricultural machine has a need to adapt to changing ground surface. The closing system includes a closing device pivotably connected to the agricultural machine, a passive mechanical element that is operable to apply an initial amount force to the closing device, and an actuator that is operable to apply an actuator force to the passive mechanical element to increase the amount of force that the passive mechanical element applies to the closing device. The actuator can be a linear actuator having an adjustable stroke length to vary the amount of actuator force applied to the passive mechanical element. The passive mechanical element is operable to absorb a shock force as the closing device traverses a ground surface. The passive mechanical element includes one or more springs adjacent the actuator.