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    • 1. 发明专利
    • Shaft coupling of construction machine
    • 建筑机械联轴器
    • JP2012137137A
    • 2012-07-19
    • JP2010289563
    • 2010-12-27
    • Hitachi Constr Mach Co Ltd日立建機株式会社
    • YOKOYAMA KAZUROKAGIWADA HITOSHISAKURAI SHIGEYUKIKOINO REI
    • F16D3/06C23C8/24C23C8/30C23C8/48C23C8/54F16D1/02F16D3/68
    • PROBLEM TO BE SOLVED: To provide a shaft coupling of a construction machine which has a torque transmission surface made of a high elastic material and a metallic material and which achieves reduction in the wear volume of the torque transmission surface with the lapse of duration of use.SOLUTION: A solid lubricant film made of a molybdenum disulfide, a graphite, calcium fluoride, or silicon dioxide is formed on the torque transmission surface 5b or 8g on a metal side. More preferably, a surface hardening layer obtained by salt bath nitriding, gas soft-nitriding, quenching and annealing, high-frequency quenching, carburizing quenching, or carbo-nitriding is formed on the torque transmission surface 5b or 8g on the metal side, and a solid lubricant film is formed on the surface hardening layer. More preferably, the surface hardening layer is roughened by manganese phosphate treatment or sand blasting or the like, and then a solid lubricant film is formed.
    • 要解决的问题:为了提供一种具有由高弹性材料制成的扭矩传递表面和金属材料的施工机械的联轴器,并且随着经过而实现扭矩传递表面的磨损量的降低 使用期限 解决方案:在金属侧的扭矩传递表面5b或8g上形成由二硫化钼,石墨,氟化钙或二氧化硅制成的固体润滑剂膜。 更优选在金属侧的扭矩传递面5b或8g上形成由盐浴氮化,气体软化氮化,淬火退火,高频淬火,渗碳淬火或碳氮化得到的表面硬化层, 在表面硬化层上形成固体润滑剂膜。 更优选地,通过磷酸锰处理或喷砂等将表面硬化层粗糙化,然后形成固体润滑剂膜。 版权所有(C)2012,JPO&INPIT
    • 2. 发明专利
    • Rotating device of construction machine
    • 施工机械旋转装置
    • JP2012047286A
    • 2012-03-08
    • JP2010190631
    • 2010-08-27
    • Hitachi Constr Mach Co Ltd日立建機株式会社
    • AKITA HIDEKIIGAWA YUJISAKURAI SHIGEYUKI
    • F16J15/34E02F9/02
    • PROBLEM TO BE SOLVED: To enhance work efficiency when installing a floating seal between a fixed body and a rotary body.SOLUTION: In a state of applying a gel-like lubricant 23 to the opening part 12C side of a seal storage part 12B formed in a shaft support member 12 and of applying the gel-like lubricant 23 to the opening part 15E side of a seal storage hole 15C formed in a roller 15, a fixed side O ring 21 installed in a fixed side seal ring 19 is inserted into the seal storage part 12B of the shaft support member 12, and a rotary side O ring 22 installed in a rotary side seal ring 20 is inserted into the seal storage hole 15C of the roller 15. Thus, a contact part between the shaft support member 12 and the fixed side O ring 21 and a contact part between the roller 15 and the rotary side O ring 22, become easily slippery by the gel-like lubricant 23, and the work efficiency when installing the floating seal 18 between the shaft support member 12 and the roller 15 can be enhanced.
    • 要解决的问题:在固定体和旋转体之间安装浮动密封时,提高工作效率。 解决方案:在将凝胶状润滑剂23涂布到形成在轴支撑部件12上的密封容纳部12B的开口部12C侧,将凝胶状润滑剂23涂布在开口部15E侧的状态 形成在辊15中的密封存储孔15C,安装在固定侧密封环19中的固定侧O形环21插入到轴支撑构件12的密封存储部12B中,并且安装在旋转侧O形环22中 旋转侧密封环20被插入到辊15的密封容纳孔15C中。因此,轴支撑构件12和固定侧O形环21之间的接触部分和辊15和旋转侧O之间的接触部分 环22容易地被凝胶状润滑剂23滑动,并且可以提高在轴支撑构件12和辊15之间安装浮动密封件18时的工作效率。 版权所有(C)2012,JPO&INPIT
    • 3. 发明专利
    • Spheroidal graphite cast iron cutting method, spheroidal graphite cast iron, sliding member, and hydraulic equipment
    • SPHEROIDAL石墨铸铁切割方法,SPHEROIDAL石墨铸铁,滑动构件和液压设备
    • JP2007319990A
    • 2007-12-13
    • JP2006153415
    • 2006-06-01
    • Hitachi Constr Mach Co Ltd日立建機株式会社
    • KUBOTA SATORUYAMAGUCHI SHOJISAKURAI SHIGEYUKI
    • B23C3/00
    • PROBLEM TO BE SOLVED: To provide a spheroidal graphite cast iron cutting method that enables the coverage of graphite on the surface of spheroidal graphite cast iron by a plastic flow of a matrix structure in a small number of steps without using a special tool, and also to provide the spheroidal graphite cast iron that has the surface machined by the cutting method, a sliding member using the spheroidal graphite cast iron, and hydraulic equipment.
      SOLUTION: The cutting method is composed so that at least one tool 5, having a main cutting blade 10 and an auxiliary cutting blade 11, is made to cut into the surface of a workpiece 7, being the spheroidal graphite cast iron, so as to execute surface modification of the workpiece 7 while moving the tool 5 and workpiece 7 relative to each other. A relative moving-speed between the tool 5 and workpiece 7 is set to be equal to or more than 600 m/min so as to cover the graphite 19 on the surface of the workpiece 7 with a plastic-flow layer 20 formed by making the surrounding matrix structure flow.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供球墨铸铁切割方法,其能够通过矩阵结构的塑性流以少量步骤覆盖球墨铸铁表面上的石墨,而不使用特殊工具 并且还提供通过切割方法表面加工的球墨铸铁,使用球墨铸铁的滑动构件和液压设备。 < P>解决方案:切割方法被构成为使至少一个具有主切割刀片10和辅助切割刀片11的工具5切割成作为球墨铸铁的工件7的表面, 以便在使工具5和工件7相对于彼此移动的同时执行工件7的表面修改。 将工具5与工件7之间的相对移动速度设定为等于或大于600m / min,以便通过塑料流动层20将工件7的表面上的石墨19覆盖, 周围矩阵结构流。 版权所有(C)2008,JPO&INPIT
    • 4. 发明专利
    • Laser welding method
    • 激光焊接方法
    • JP2007090402A
    • 2007-04-12
    • JP2005284882
    • 2005-09-29
    • Hitachi Constr Mach Co Ltd日立建機株式会社
    • NAKAJIMA TORUSAKURAI SHIGEYUKITAKAHASHI TAKESHI
    • B23K26/20B23K103/04
    • PROBLEM TO BE SOLVED: To provide a laser welding method capable of preventing occurrence of low-temperature cracks in a part of a weld bead or the like even when the laser welding method is applied to a circumferential weld or the like over the whole circumferential contour of a member. SOLUTION: While a boss 20 as a one side member is inserted in an insertion hole part 12C in a web 12 as the other partner member, a laser beam welding machine 21 is arranged at a laser beam irradiation starting point (the position of a point PA). The laser beams 22 for the first round are continuously moved to the position making one turn along the contour of the boss 20 (an irradiation locus 23 of the radius R). Next, in the laser beam irradiation step on the second round, the laser beams are irradiated along the irradiation locus 25 while the power of the laser beams 22 is gradually reduced from the power of the laser beam irradiation on the first round without stopping the irradiation of the laser beams 22 by the laser beam welding machine 21. The irradiation of the laser beams 22 is stopped at the end position on the second round (for example, the position of the point PE). COPYRIGHT: (C)2007,JPO&INPIT
    • 解决的问题:为了提供一种能够防止在焊缝等的一部分中发生低温裂纹的激光焊接方法,即使当激光焊接方法应用于周边焊缝等时, 一个构件的整个圆周轮廓。

      解决方案:作为一侧构件的凸台20作为另一对象构件插入到作为另一对象构件的腹板12中的插入孔部12C中,激光束焊接机21配置在激光束照射起点 点PA)。 第一轮的激光束22沿着凸台20的轮廓(半径R的照射轨迹23)连续移动到一圈。 接着,在第二回合的激光照射工序中,沿着照射轨迹25照射激光,同时激光束22的功率从第一轮的激光束照射的功率逐渐减小而不停止照射 通过激光束焊接机21的激光束22的照射。激光束22的照射停止在第二回合的终端位置(例如点PE的位置)。 版权所有(C)2007,JPO&INPIT

    • 5. 发明专利
    • Laser beam machining method and apparatus
    • 激光束加工方法和装置
    • JP2006326615A
    • 2006-12-07
    • JP2005150895
    • 2005-05-24
    • Hitachi Constr Mach Co LtdHitachi Kenki Fine Tech Co Ltd日立建機ファインテック株式会社日立建機株式会社
    • HIGURE MASATERUSAKURAI SHIGEYUKINAGANO YOSHIYA
    • B23K26/38B23K26/14
    • PROBLEM TO BE SOLVED: To provide a laser beam machining method and apparatus for reducing thermal damage on the inner wall face of a pipe opposing to a machining face, for suppressing the deposit of spatters onto the inner wall face of the pipe, and for reducing burrs sticking to the cut part of the inner wall face of the pipe and dispensing with washing of the metallic pipe after laser beam machining, in cutting out an arbitrary pattern on the cylindrical face of the metallic pipe as a workpiece by laser beam machining. SOLUTION: The laser beam machining apparatus is equipped with a machining table 2 for holding the metallic pipe 1 as the workpiece, a laser oscillator 21, and a nozzle 22 for emitting a laser beam 23. In performing laser beam machining, a gas 35 containing dry ice particles 36 supplied from a dry ice injection controller 31 is injected from an injection nozzle 34 to the hollow part of the metallic pipe 1. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:为了提供一种用于减少与加工面相对的管的内壁面上的热损伤的激光束加工方法和装置,为了抑制飞溅物沉积到管的内壁面上, 并且为了减少粘附在管内壁面的切割部分的毛刺,并且在激光加工之后分配金属管的洗涤,在通过激光束切割作为工件的金属管的圆柱面上的任意图案 加工。 解决方案:激光束加工装置配备有用于保持金属管1作为工件的加工台2,激光振荡器21和用于发射激光束23的喷嘴22.在进行激光束加工时, 含有从干冰喷射控制器31供给的干冰颗粒36的气体35从注射喷嘴34喷射到金属管1的中空部分。版权所有(C)2007,JPO&INPIT
    • 6. 发明专利
    • Cylinder block for hydraulic rotor
    • 液压转子缸体
    • JP2006291879A
    • 2006-10-26
    • JP2005114846
    • 2005-04-12
    • Hitachi Constr Mach Co Ltd日立建機株式会社
    • SAKURAI SHIGEYUKIWAKABAYASHI YUSUKEAKITA HIDEKI
    • F04B53/16F04B1/10F04B1/107F04B1/113
    • PROBLEM TO BE SOLVED: To improve wear resistance on the inner face of a cylinder while suppressing the leakage of oil liquid from the cylinder to the outside. SOLUTION: At positions near an opening end 11A of the inner peripheral face of the cylinder 11, first hardening treatment parts 20, 20 are formed in striped patterns by applying laser quenching all over a sliding range L1. On the corner side of the cylinder 11, second hardening treatment parts 21, 21 are formed in striped patterns by applying laser quenching all over a sliding range L2. At an intermediate position between the hardening treatment parts 20, 21, a band heat treatment part 22 peripherally extending all the way around the inner face of the cylinder 11 is formed by laser quenching. As a result, the leakage of pressure oil from the cylinder 11 to the outside is suppressed by the band heat treatment part 22. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:为了提高油缸内表面的耐磨性,同时抑制油液从气缸泄漏到外部。 解决方案:在气缸11的内周面的开口端11A附近的位置,通过在滑动范围L1上施加激光淬火,将第一硬化处理部20,20形成为条纹图案。 在气缸11的角部侧,通过在滑动范围L2上施加激光淬火,将第二硬化处理部21,21形成为条纹状。 在硬化处理部20,21之间的中间位置,通过激光淬火形成围绕气缸11的内表面周边延伸的带状热处理部22。 结果,压力油从气缸11向外部的泄漏被带热处理部22抑制。(C)2007,JPO&INPIT
    • 7. 发明专利
    • Laser beam machining device
    • 激光加工设备
    • JP2005118849A
    • 2005-05-12
    • JP2003359033
    • 2003-10-20
    • Hitachi Constr Mach Co LtdHitachi Kenki Fine Tech Co Ltd日立建機ファインテック株式会社日立建機株式会社
    • MORITA TERUNAGANO YOSHIYASAKURAI SHIGEYUKI
    • B23K26/14B23K26/10
    • PROBLEM TO BE SOLVED: To provide a laser beam machining device capable of cutting a plurality of sheets of working objects superposed on each other to desired shapes without causing to weld to each other.
      SOLUTION: Works 3 and 4 are irradiated with a laser 9 from an exit port of a nozzle 1. The assist gas from an assist gas sending port 10 formed on the side face of the nozzle 1 is jetted and sprayed from the laser exit port. The upper stage work 3 and the lower stage work 4 are disposed in the state of a two-sheet pile on a tool 2 and the lower stage work 4 adjoining a work suction pore 7 is attracted to the tool 2. The assist gas is diffused along a horizontal end surface 5 toward an outer peripheral direction, by which the clearance between the nozzle horizontal end surface 5 and the upper stage work 3 is made lower in the static pressure than in the other parts and the upper stage work 3 is kept to be attracted toward the nozzle horizontal end surface 5. The works 3 and 4 are therefore separated from each other and are subjected to the laser beam cutting in the state of having the clearance and consequently the occurrence of the situation that the works weld to each other is suppressed.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供一种激光束加工装置,其能够将彼此重叠的多个工作物体切割成期望的形状而不会彼此焊接。 解决方案:工件3和4从喷嘴1的出口用激光9照射。形成在喷嘴1的侧面上的辅助气体送出口10的辅助气体从激光器喷射并喷射 出口 上层工件3和下层工件4在工具2上以两片堆垛的状态设置,邻接工件吸入孔7的下层工作台4被吸引到工具2上。辅助气体扩散 沿着水平端面5朝向外周方向,使喷嘴水平端面5与上层工件3之间的间隙在静压力方面比其他部分低,并且将上层工件3保持为 被吸引到喷嘴水平端面5.因此,工件3和4彼此分离并且在具有间隙的状态下进行激光束切割,并且因此发生焊接到彼此的情况 被压制 版权所有(C)2005,JPO&NCIPI
    • 8. 发明专利
    • Laser marking device and method
    • 激光标记装置和方法
    • JP2003019576A
    • 2003-01-21
    • JP2001206719
    • 2001-07-06
    • Hitachi Constr Mach Co Ltd日立建機株式会社
    • SAKURAI SHIGEYUKIMITSUYANAGI NAOKINAGANO YOSHIYAMORITA TERU
    • G02B5/18B23K26/00B23K26/06B23K26/073B23K101/40H01L21/02
    • H01L2223/54406H01L2223/54486
    • PROBLEM TO BE SOLVED: To provide a laser marking device and method that shows a shallow machining depth and a superior visibility in marking, with a laser beam, an i-chip-exposed IC package such as a CSP and thin type electronic parts. SOLUTION: This is a laser marking device by which a workpiece 14 is irradiated with a laser beam 12 for pattern marking. The device is equipped with a laser generator 11 for outputting a laser beam, a diffraction device 18 by which the power density distribution of the laser beam outputted from the laser generator is converted to that of multiple peaks, and an image forming optical instrument 20 which guides, to the workpiece, the laser beam relating to the power density distribution with multiple peaks for image formation and which forms, as a pattern on the surface of the workpiece, a rugged part corresponding to the power density distribution with multiple peaks.
    • 要解决的问题:提供一种激光打标装置和方法,该激光打标装置和方法利用激光束,诸如CSP和薄型电子部件的i芯片曝光IC封装,显示出较浅的加工深度和更高的标识可见度。 解决方案:这是激光打标装置,通过该激光打标装置用用于图案标记的激光束12照射工件14。 该装置配备有用于输出激光束的激光发生器11,将从激光发生器输出的激光束的功率密度分布转换为多个峰值的衍射装置18,以及成像光学仪器20 向工件引导与功率密度分布相关的激光束,其具有用于成像的多个峰值,并且形成作为工件表面上的图案的与具有多个峰值的功率密度分布相对应的粗糙部分。
    • 10. 发明专利
    • Sliding bearing and construction machine provided with the same
    • 滑动轴承和建造机器提供
    • JP2012145138A
    • 2012-08-02
    • JP2011002134
    • 2011-01-07
    • Hitachi Constr Mach Co Ltd日立建機株式会社
    • AKITA HIDEKIGOKITA OSAMUSAKURAI SHIGEYUKINAGAI YASUMUTSU
    • F16C33/10B22F5/10C22C38/00F16C17/02F16C33/12F16C33/24
    • E02F9/006B22F3/1146B22F5/10C22C1/08C22C38/00F16C11/045F16C17/02F16C33/102F16C33/128F16C2350/26Y10S384/902
    • PROBLEM TO BE SOLVED: To provide a sliding bearing capable of maintaining excellent lubricating performance over a long period of time and exhibiting an excellent strength, and to provide a construction machine provided with the sliding bearing.SOLUTION: The sliding bearing has at least a bush 10 and a shaft part 20. The shaft part 20 includes a grease-feeding pathway 70 for feeding grease G to a sliding surface between the shaft part 20 and the bush 10 from the exterior, the bush 10 is formed from a porous sintered metal, and a decomposition catalyst S is adhered to the sliding surface of the bush 10. Consequently, the grease G can be easily fed to the sliding surface between the shaft part 20 and the bush 10 from the exterior via the grease-feeding pathway 70, at the same time, base oil of the fed grease G is separated by the decomposition catalyst S and permeates the bush 10 as it is, and is retained in voids C of the bush, so that the running out of lubricant is prevented and the excellent lubricating performance and excellent strength can be maintained over a long period of time.
    • 要解决的问题:提供一种能够长期保持优异的润滑性能并且显示出优异的强度的滑动轴承,并且提供一种设置有滑动轴承的工程机械。 解决方案:滑动轴承至少具有衬套10和轴部20.轴部20包括用于将油脂G从轴部20和衬套10之间的滑动表面供给的润滑脂供给路径70 外部,衬套10由多孔烧结金属形成,并且分解催化剂S粘附到衬套10的滑动表面。因此,润滑脂G可以容易地供给到轴部20和衬套之间的滑动表面 10从外部经由供油通路70,同时,供给润滑脂G的基础油被分解催化剂S分离,原样渗透到衬套10中,并保持在衬套的空隙C中, 从而防止润滑剂的流出,并且能够长时间保持优异的润滑性能和优异的强度。 版权所有(C)2012,JPO&INPIT