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    • 69. 发明公开
    • Earth working apparatus
    • 地球工作装置
    • EP2644011A1
    • 2013-10-02
    • EP13161030.5
    • 2013-03-26
    • Bos Konstruktie- en Machinebouw B.V.
    • Bos, Greorgius Rudolphius
    • A01B31/00E02F3/84
    • A01B31/00E02F3/7631E02F3/7672E02F3/844F15B2211/7053F15B2211/7107F15B2211/7121
    • The present invention relates to a device for levelling a land surface, comprising a (scraping or grading) blade (2) suspended from a first suspension point (3a) and a second suspension point (3b), a hydraulic circuit with a coupling for feed and discharge of hydraulic liquid under pressure, a first hydraulic cylinder (5a) connected to the hydraulic circuit for defining the height (4a) of the first suspension point (3a) relative to the land surface (7), a second hydraulic cylinder (5b) connected to the hydraulic circuit for defining the height (4b) of the second suspension point (3b) relative to the land surface (7), wherein the first and second hydraulic cylinders (5a,5b) are placed in a master-slave arrangement and wherein the hydraulic circuit is provided with a controllable bypass (18) around the second hydraulic cylinder (5b) in order to enable individual control of the first hydraulic cylinder (5a), and thereby of the relative height of the first and second suspension points (3a,3b).
    • 本发明涉及一种用于调平陆地表面的装置,该装置包括从第一悬挂点(3a)和第二悬挂点(3b)悬挂的(刮除或分级)叶片(2),具有用于进给的联接器的液压回路 (3a)相对于陆地表面(7)的高度(4a)连接的第一液压缸(5a),第二液压缸(5b)和第二液压缸 )连接到液压回路以限定第二悬挂点(3b)相对于陆地表面(7)的高度(4b),其中第一和第二液压缸(5a,5b)置于主 - 从布置 并且其中所述液压回路设置有围绕所述第二液压缸(5b)的可控旁路(18),以便能够单独控制所述第一液压缸(5a)并且由此控制所述第一和第二悬架点(5a)的相对高度 (3A, 图3b)。