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    • 1. 发明申请
    • ARM FOR CONSTRUCTION MACHINE
    • 建筑机械用臂
    • US20130343854A1
    • 2013-12-26
    • US14003352
    • 2012-05-16
    • Makoto SugayaTakeshi TakahashiTakayuki Shimodaira
    • Makoto SugayaTakeshi TakahashiTakayuki Shimodaira
    • E02F3/38
    • E02F3/38
    • An arm (11) of a hydraulic excavator (1) is formed as a box-shaped structural body surrounded by left and right side plates (12, 13), an upper plate (14), a lower plate (15), and a thick rear plate (16). An upper end (16A) of the thick rear plate (16) is protruded upward from an outer surface (14A3) of the upper plate (14). Upper ends (22B) of a pair of arm cylinder brackets (22) joined to an outer surface (16C) of the thick rear plate (16) are arranged higher than the outer surface (14A3) of the rear thick upper plate (14A) and lower than the upper end (16A) of the thick rear plate (16). As a result, in each of the arm cylinder brackets (22), a joint area with the thick rear plate (16) can be ensured large, and joint strength can be improved.
    • 液压挖掘机(1)的臂(11)形成为由左右侧板(12,13),上板(14),下板(15)和 厚的后板(16)。 厚后板(16)的上端(16A)从上板(14)的外表面(14A3)向上突出。 与厚后板(16)的外表面(16C)接合的一对臂筒支架(22)的上端(22B)布置成比后厚的上板(14A)的外表面(14A3)高, 并且比厚后板(16)的上端(16A)低。 结果,在各臂支架(22)中,可以确保与厚后板(16)的接合区域大,能够提高接合强度。
    • 2. 发明申请
    • BOOM FOR CONSTRUCTION MACHINE
    • 建筑机械
    • US20140056677A1
    • 2014-02-27
    • US13994821
    • 2011-04-20
    • Takeshi TakahashiAtsushi HamadaTakayuki ShimodairaHikaru YamamotoMakoto Sugaya
    • Takeshi TakahashiAtsushi HamadaTakayuki ShimodairaHikaru YamamotoMakoto Sugaya
    • E02F3/38
    • E02F3/38
    • In left and right web plates (12) of a boom (11), first to fifth web materials (12A to 12E) are joined at edge portions in a front-rear direction along welding lines (13A to 13D). In an upper flange plate (14), a rear upper flange material (14A), a front upper flange material (14B), and a middle upper flange material (14C) are joined at edge portions in a front-rear direction along welding lines (15A, 15B). Ina lower flange plate (16), first to sixth lower flange materials (16A to 16F) are joined at edge portions in a front-rear direction along welding lines (17A to 17E). The welding lines (13A to 13D) of the left and right web plates (12) are disposed in positions that are different from those of the welding lines (15A, 15B) of the upper flange plate (14) and the welding lines (17A to 17E) of the lower flange plate (16) in a front-rear direction. This makes it possible to reduce the entire weight and thereby achieve reduction in weight while ensuring bending strength, torsional strength, and the like of the boom (11).
    • 在悬臂(11)的左右腹板(12)中,第一至第五腹板材料(12A至12E)沿着焊接线(13A至13D)沿前后方向的边缘部分接合。 在上法兰板(14)中,沿着焊接线的前后方向的边缘部分接合有后上凸缘材料(14A),前上凸缘材料(14B)和中上凸缘材料(14C) (15A,15B)。 下凸缘板(16),第一至第六下凸缘材料(16A至16F)沿焊接线(17A至17E)沿前后方向的边缘部分接合。 左和右腹板(12)的焊接线(13A〜13D)配置在与上部法兰板(14)的焊接线(15A,15B)和焊接线(17A)的位置不同的位置 至17E)的前后方向。 由此,能够减轻整体重量,能够实现起重臂(11)的弯曲强度,扭转强度等的减轻。
    • 6. 发明授权
    • Arm for construction machine
    • 施工机械臂
    • US09255378B2
    • 2016-02-09
    • US14003341
    • 2012-05-16
    • Makoto SugayaTakeshi TakahashiTakayuki Shimodaira
    • Makoto SugayaTakeshi TakahashiTakayuki Shimodaira
    • E02F3/38
    • E02F3/38
    • An arm of a hydraulic excavator is formed as a box-shaped structural body surrounded by left and right side plates, an upper plate joined to each of the upper end sides of each side plate, a lower plate joined to each of the lower end sides of each side plate, and a thick rear plate joined to each of the rear end sides of each side plate and the upper plate. The side plates are formed by joining a rear thick side plate and a front thin side plate. The upper plate is formed by joining two members, that is, a rear thick upper plate and a front thin upper plate, and the lower plate is formed by joining two members, that is, a rear thick lower plate and a front thin lower plate.
    • 液压挖掘机的臂形成为由左右侧板围绕的箱状结构体,与各侧板的上端侧连接的上板,与各下端侧连接的下板 并且连接到每个侧板和上板的每个后端侧的厚的后板。 侧板通过连接后厚侧板和前薄侧板而形成。 上板通过连接两个构件,即后厚的上板和前薄的上板形成,并且下板通过将两个构件,即后厚的下板和前薄的下板 。