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    • 6. 发明公开
    • CONSTRUCTION MACHINE
    • 施工机械
    • EP2610406A1
    • 2013-07-03
    • EP11819702.9
    • 2011-07-13
    • Hitachi Construction Machinery Co., Ltd.
    • NAKANISHI MasashiABE ShinyaTANAKA Yasushi
    • E02F9/10E02F9/08
    • E02F9/0808E02F9/006E02F9/0816E02F9/10E02F9/121
    • A revolving frame (11) is composed of a center frame (12) and a tail frame (30). The center frame (12) is composed of a front bottom plate (13) and left and right front vertical plates (14, 17) erected on the front bottom plate (13) and having front part sides being left and right bracket portions (14A, 17A) performing pin-connection between a lower boom (5A) of a working mechanism (5) and a boom cylinder (5E). The tail frame (30) is composed of left and right I-section beams (31, 32) and a rear bottom plate (33) connecting each I-section beam (31, 32) to each other. A height dimension (A) between boom pin through holes (15A, 18A) provided in the bracket portions (14A, 17A) is set smaller than a height dimension (B) of the front end of an upper flange portion (31B, 32B) of the I-section beam (31, 32).
    • 回转框架(11)由中心框架(12)和尾框架(30)组成。 中央框架12由前底板13和竖立在前底板13上的左前垂直板和右前垂直板14,17构成,并且前部侧是左右托架部分14A ,17A)执行工作机构(5)的下部悬臂(5A)和悬臂液压缸(5E)之间的销连接。 尾架(30)由左,右I形梁(31,32)和将每个I形梁(31,32)彼此连接的后底板(33)组成。 设置在托架部(14A,17A)中的动臂销贯通孔(15A,18A)之间的高度尺寸(A)被设定为小于上凸缘部(31B,32B)的前端的高度尺寸(B) 的I型梁(31,32)。
    • 8. 发明公开
    • CONSTRUCTION MACHINE
    • 施工机械
    • EP2317017A1
    • 2011-05-04
    • EP09802766.7
    • 2009-04-21
    • Hitachi Construction Machinery Co., Ltd
    • OKADA, KazumasaNAKAMURA, MasaoMATSUSHITA, Makoto
    • E02F9/00B62D25/10B66C23/62
    • B62D25/12B66C23/62E02F9/00E02F9/0816E02F9/0891
    • An intermediate plate member (22) having a plate thickness equal to or less than that of a door body (19) is provided between the door body (19) and a reinforcing member (24) constituting a right side door (18). The door body (19) and the intermediate plate member (22) are jointed by spot welding, and the intermediate plate member (22) and the reinforcing member (24) are jointed by fillet welding, thereby jointing the reinforcing member (24) through the intermediate plate member (22) on the inner side surface (19A) of the door body (19). Thereby, at the time of jointing the door body (19) and the intermediate plate member (22) by welding, the intermediate plate member (22) having the strength lower than that of the door body (19) can be distorted by priority, thus restricting the generation of distortion in the door body (19) and keeping the outer appearance beauty of the right side door (18) in good conditions.
    • 在门体(19)与构成右侧门(18)的加强部件(24)之间设置有板厚等于或小于门体(19)的板厚的中间板部件(22)。 门体19和中间板部件22通过点焊接合,中间板部件22和加强部件24通过角焊接接合而将加强部件24贯通 位于门体19的内侧面19A上的中间板部件22。 由此,在通过焊接将门体(19)和中间板部件(22)接合时,强度比门体(19)低的中间板部件(22)优先发生扭曲, 因此限制了门体(19)的变形的产生,并且保持了右侧门(18)的良好外观美感。
    • 10. 发明公开
    • Excavator frame and method of assembly
    • Tragrahmen eines Baggers und Zusammenbauverfahren
    • EP1033448A3
    • 2000-12-06
    • EP00103471.9
    • 2000-03-01
    • Clark Equipment Company
    • Gerard J.DuppongWarren M.SchatzStacy A. ZanderJay J.Bleth
    • E02F9/08E02F9/12E02F9/02
    • E02F9/0816E02F9/121F16C19/166F16C2300/14F16C2350/26
    • An excavator undercarriage frame is made to reduce the amount of machining necessary for supporting a swing bearing and ring gear on which an upper swing platform including the cab and operator's platform are mounted. The frame is made in two separate frame sections (54, 56) having top plates (60, 76) and formed peripheral skirts (64, 66, 68, 82, 84, 86) that nest together to form a planar support on which the base ring of a swing bearing and ring gear are mounted. The frame section plates are thin enough so that they will flex to conform to the base ring of the swing bearing, so it is not necessary to provide a machined surface for the swing bearing. The frame sections are welded together only around the peripheral edges and skirts, so that the distortion in the plates is substantially eliminated. The plates can be then bolted or secured directly to the bearing base ring, preferably using a clamp ring on the bottom of the frame plates and will provide an adequate support with the two plate thicknesses, and will be true and square without machining.
    • 制造挖掘机起落架用于减少支撑包括驾驶室和驾驶员平台的上摆动平台的摆动轴承和齿圈的必要加工量。 框架由具有顶板(60,76)和形成的外围裙部(64,66,68,82,84,86)的两个单独的框架部分(54,56)制成,其嵌套在一起以形成平面支撑件,其上 安装摆动轴承和齿圈的基座。 框架截面板足够薄,使得它们将弯曲以符合摆动轴承的基座环,因此不需要为摆动轴承提供加工表面。 框架部分仅在周边边缘和裙部周围焊接在一起,从而基本上消除了板中的变形。 然后可以将板螺栓固定或直接固定到轴承座环上,优选地使用框架板底部的夹紧环,并且将提供具有两个板厚度的足够的支撑,并且将在不加工的情况下是真实的和正方形的。