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    Variable length upper guide rod for a three-point loading rack
    31.
    发明授权
    Variable length upper guide rod for a three-point loading rack 失效
    适用于三点装载架的可变长度上指南

    公开(公告)号：US3736845A

    公开(公告)日：1973-06-05

    申请号：US3736845D

    申请日：1971-05-18

    申请人： WEISTE H ,  SCHUMACHER F

    发明人： WEISTE H ,  SCHUMACHER F

    IPC分类号： A01B63/10 ,  A01B59/00 ,  F15B13/16

    CPC分类号： A01B59/004 ,  A01B59/00 ,  Y10S60/911

    摘要： A hydraulic three-point loading rack, for agricultural prime movers, has a variable length upper guide rod in the form of a cylinder, a piston guided in the cylinder, a piston rod connected to the piston and hydraulic supply-return lines connected to the cylinder chambers on opposite sides of the piston. Respective normally closed, pressure-holding valves are connected in each of the two supply-return lines and opened only by a predetermined supply pressure in the associated line, these valves being interposed between a hydraulic pump, with associated return reservoir, and the cylinder chambers. A distributing valve is connected between the pump and the shut-off valves and has a neutral position shutting off both cylinder chambers from the pump, and a pair of operating positions, in each of which one line is supplied with hydraulic fluid and the other line returns hydraulic fluid to the reservoir. A nominal-actual value setter is associated with an actual value selsyn connected to the piston rod, and may be selectably bypassed. A three-way cock is connected to the two supply-return lines and communicates with the reservoir.

    摘要翻译： 用于农用原动机的液压三点装载架具有可变长度的上导向杆，其形式为气缸，在气缸中引导的活塞，连接到活塞的活塞杆和连接到活塞的液压回流管线 活塞两侧的气缸室。 各个常闭压力保持阀连接在两个回流管路中的每一个中，并且仅在相关联的管线中仅通过预定的供应压力打开，这些阀被插入在具有相关联的回流储存器的液压泵和缸室之间 。 分配阀连接在泵和截止阀之间，并具有中断位置，从泵离开两个气缸室，以及一对操作位置，每个操作位置中的一个管路被供应液压流体，另一个管路 将液压油返回到储存器。 标称实际值设定器与连接到活塞杆的实际值selsyn相关联，并且可以被可选择地旁路。 三通旋塞阀连接到两个回流管路，并与油箱连通。

    Three-point hitch for an agricultural tractor
    37.
    发明授权
    Three-point hitch for an agricultural tractor 有权

    公开(公告)号：US11678595B2

    公开(公告)日：2023-06-20

    申请号：US17065713

    申请日：2020-10-08

    申请人： DEERE & COMPANY

    发明人： Abhijit Hingne ,  Achim Schibel

    IPC分类号： A01B59/00 ,  A01B59/06 ,  B60D1/155

    CPC分类号： A01B59/004 ,  A01B59/068 ,  B60D1/155

    摘要： A three-point hitch for an agricultural tractor includes a hydraulically actuatable lifting arm, a vertically pivotable lower link, and a lifting strut arranged between the lifting arm and the lower link. The lifting strut transmits to the lower link a pivoting movement on the lifting arm. The lifting strut includes a first fastening portion articulated to the lifting arm and a second fastening portion articulated to the lower link. The second fastening portion includes first and second fastening segments which encompass the lower link in a fork-shaped manner. A bearing pin disposed between the two fastening segments extends through a slot formed in the lower link. By pivoting the lower link, the bearing pin is displaced inside the slot between a first working position and a second working position. In each position, the bearing pin is secured inside the slot by a blocking arrangement.

    Mechanism combining articulation and side-shift
    38.
    发明授权
    Mechanism combining articulation and side-shift 有权

    公开(公告)号：US11666126B2

    公开(公告)日：2023-06-06

    申请号：US17137309

    申请日：2020-12-29

    申请人： Daniel Joseph Cowley

    发明人： Daniel Joseph Cowley

    IPC分类号： A45B25/02 ,  A01B59/00 ,  A01B71/06 ,  H01Q1/12

    CPC分类号： A45B25/02 ,  A01B59/004 ,  A01B71/06 ,  H01Q1/125

    摘要： A coupling mechanism controls the location of the central primary draft load transmitting fixed-length link independently of the coupler. The coupling mechanism allows for translation in at least three orthogonal directions and for rotation of two distinct planes between coupled components, thereby providing a means for lateral shifting and articulation. The coupling mechanism mitigates unexpected rotation by restricting rotation along a longitudinal axis of the fixed-length link. Rotation of the coupling mechanism is furthermore controlled by means of a indexing turntable. The orientation and the position of the coupling mechanism is therefore determinant and predictable.

    LOCKING LINK ASSEMBLY FOR WORK MACHINE HITCH
    40.
    发明申请
    LOCKING LINK ASSEMBLY FOR WORK MACHINE HITCH 审中-公开

    公开(公告)号：US20180042166A1

    公开(公告)日：2018-02-15

    申请号：US15549727

    申请日：2016-02-17

    申请人： AGCO Corporation

    发明人： Matthew Benjamin SHAW

    IPC分类号： A01B59/00

    CPC分类号： A01B59/004 ,  B60D1/42

    摘要： A locking mechanism for a link assembly of a work vehicle hitch has a locking plate mounted to an upper portion of the link assembly. A collar is positioned over the sleeve and is configured to slide relative a portion of the sleeve. The collar meshes with the sleeve so as to prevent rotational movement of the upper portion of the sleeve relative the collar when the collar is adjacent the upper portion, but the sleeve can rotate relative the collar when the collar is adjacent a middle portion of the sleeve. The locking mechanism has a handle mounted on the collar that is pivotable between a locked position where the handle is generally parallel with the sleeve in which the collar is prevented from sliding relative the sleeve and a released position generally perpendicular to the sleeve in which the collar is able to slide relative the sleeve.