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    • 40. 发明公开
    • Lifting unit for the lower links of a tractor
    • UnterlenkerhebeeinheitfürSchlepper
    • EP1452082A1
    • 2004-09-01
    • EP04002209.7
    • 2004-02-02
    • AGCO GmbH & Co.
    • Girstenbrei, ErichKnobloch, JürgenPrieler, AlexanderWolfle, GottliebMuhlratzer, Johann
    • A01B63/10
    • A01B63/1006
    • A hitch comprises a pair of spaced apart lower links (2,3), each lower link having respective first and second ends with the first end pivotally attached to a lower link mount (6) and the second end is free and includes an attachment member (4,5). The hitch also includes a pair of spaced apart lift actuators (11,12) and a pair of spaced apart assist actuators (15,16) with one of the lift actuators and one of the assist actuators being associated with the first lower link and the other lift actuator and assist actuator being associated with the second lower link. The lift actuator (11) associated with the first lower link (2) is hydraulically connected in series with the assist actuator (16) associated with the second lower link (3), and the lift actuator (12) associated with the second lower link (3) is hydraulically connected in series with the assist actuator (15) associated with the first lower link (2). A hydraulic control arrangement for the hitch is also disclosed.
    • 牵引件包括一对间隔开的下连杆(2,3),每个下连杆具有相应的第一和第二端,其第一端枢转地附接到下连杆安装件(6),并且第二端是自由的并且包括附接构件 (4,5)。 牵引还包括一对间隔开的提升致动器(11,12)和一对间隔开的辅助致动器(15,16),其中一个提升致动器和一个辅助致动器与第一下部连杆和 其他提升致动器和辅助致动器与第二下连杆相关联。 与第一下部连杆(2)相关联的升降致动器(11)与与第二下部连杆(3)相关联的辅助致动器(16)串联地液压连接,并且与第二下部连杆 (3)与与第一下部连杆(2)相关联的辅助致动器(15)液压连接。 还公开了一种用于搭接的液压控制装置。