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    • 1. 发明授权
    • Working machine of a hydraulic backhoe having increased blade tip force
    • 具有增加的叶片尖端力的液压反铲机的工作机器
    • US5711096A
    • 1998-01-27
    • US628631
    • 1996-08-06
    • Takeshi KobayashiHaruo TomozakiYuji ShiomotoTadashi EkawaKiyoshi Sugiyama
    • Takeshi KobayashiHaruo TomozakiYuji ShiomotoTadashi EkawaKiyoshi Sugiyama
    • E02F3/30E02F3/32E02F3/42E02F3/84
    • E02F3/302E02F3/32E02F3/847E02F3/307
    • The invention provides a working machine of a hydraulic backhoe in which the blade tip force can be increased over a wide range of operations, which has a great blade tip force at the start of excavation, and which can increase working efficiency by avoiding obstacles. For these purposes, a second link pivotally connected to third fulcrums (6, 13) provided in common at a leading end of an arm cylinder (4) and one end of a first link (10) and to a second fulcrum (12) of an arm (2) is a hydraulic correction cylinder (11). A working hydraulic circuit for the arm cylinder (4) and the correction cylinder (11) may constitute a series circuit having a circuit (24) connecting a head side oil chamber (20) of the arm cylinder (4) to a bottom side oil chamber (23) of the correction cylinder (11).
    • PCT No.PCT / JP94 / 01808 Sec。 371日期:1996年8月6日 102(e)日期1996年8月6日PCT 1994年10月27日PCT公布。 公开号WO95 / 12039 日期:1995年5月4日本发明提供了一种液压反铲机的工作机械,其中可以在广泛的操作范围内增加叶片尖端力,其在开挖开始时具有很大的叶片尖端力,并且可以通过 避免障碍。 为了这些目的,枢转地连接到第三支点(6,13)的第二连杆,第三支点(6,13)共同设置在臂缸(4)的前端和第一连杆(10)的一端和第二支点(12)的第二支点 臂(2)是液压校正缸(11)。 用于悬臂气缸(4)和校正气缸(11)的工作液压回路可以构成串联回路,该串联回路具有将臂部缸(4)的头侧油室(20)连接到底侧油 校正气缸(11)的腔室(23)。
    • 2. 发明授权
    • Crawler frame mounting structure for construction machinery
    • 履带机架施工机械安装结构
    • US07458633B2
    • 2008-12-02
    • US11660736
    • 2005-08-29
    • Masaji TakeuchiTadashi Ekawa
    • Masaji TakeuchiTadashi Ekawa
    • B62D21/10
    • B62D55/10E02F9/02
    • A mounting structure for a center frame and crawler frames of a base carrier of a construction machine, which can increase durability without complicating the structure is provided. A crawler frame mounting structure for a construction machine includes a center frame configured to rotatably support an upper rotating body, fastening portions for fastening the center frame to crawler frames on right and left sides by front and rear leg portions, and end plates having widths wider than the width between attachment positions of a pair of vertical plates. The end plates including tie bolt holes formed on both right and left ends are welded.
    • 提供了一种用于建筑机械的基架的中心框架和履带架的安装结构,其可以在不使结构复杂化的情况下提高耐用性。 用于建筑机械的履带架安装结构包括:中心框架,其构造成可旋转地支撑上部旋转体,用于将中心框架固定在前后腿部的右侧和左侧的履带架上的紧固部分和宽度较宽的端板 比一对垂直板的连接位置之间的宽度。 包括形成在左右两端的螺栓孔的端板被焊接。