公开(公告)号：US20160040692A1

公开(公告)日：2016-02-11

申请号：US14868374

申请日：2015-09-28

Applicant: Precision Planting LLC

Inventor： Jason Stoller ,  Kent Levy ,  Todd Swanson

IPC: F15B15/20

CPC classification number: F15B15/204 ,  A01C5/062 ,  A01C5/064 ,  A01C7/205 ,  F15B15/20

Abstract: A downforce controller for an agricultural implement having a double-acting hydraulic cylinder. The cylinder is configured to be coupled to an agricultural row unit and an agricultural toolbar for transmitting a net downforce between the agricultural toolbar and the agricultural row unit. A first pressure in a first chamber of the cylinder and a second pressure in a second chamber of the cylinder have counteracting effects on the net downforce. A manifold coupled to the cylinder is in fluid communication with the first chamber. A pressure control valve coupled to the manifold is in fluid communication with the manifold and the first chamber.

公开(公告)号：US20150271985A2

公开(公告)日：2015-10-01

申请号：US13951362

申请日：2013-07-25

Applicant: Precision Planting LLC

Inventor： Jason Stoller ,  Kent Levy ,  Todd Swanson

IPC: A01C5/06

CPC classification number: F15B15/204 ,  A01C5/062 ,  A01C5/064 ,  A01C7/205 ,  F15B15/20

Abstract: A downforce controller for an agricultural implement having a double-acting hydraulic cylinder. The cylinder is configured to be coupled to an agricultural row unit and an agricultural toolbar for transmitting a net downforce between the agricultural toolbar and the agricultural row unit. A first pressure in a first chamber of the cylinder and a second pressure in a second chamber of the cylinder have counteracting effects on the net downforce. A manifold coupled to the cylinder is in fluid communication with the first chamber. A pressure control valve coupled to the manifold is in fluid communication with the manifold and the first chamber.

Abstract translation: 一种用于具有双作用液压缸的农具的下压力控制器。 圆筒构造成联接到农业排单元和用于在农业工具栏和农业排单元之间传送净下压力的农业工具栏。 气缸的第一室中的第一压力和气缸的第二室中的第二压力对净下压力具有抵消作用。 联接到气缸的歧管与第一腔室流体连通。 联接到歧管的压力控制阀与歧管和第一室流体连通。