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    • 19. 发明专利
    • Self-propelled construction machine
    • 自建式建筑机械
    • JP2013087621A
    • 2013-05-13
    • JP2012230830
    • 2012-10-18
    • Wirtgen Gmbhヴィルトゲン ゲーエムベーハーWirtgen Gmbh
    • WINFRIED VON SCHOENEBECKSASCHA SCHWIPPERTBARIMANI CYRUSHAHN GUNTER DR
    • E01C23/088F16H61/478
    • F16H61/48B60W10/023B60W10/103B60W10/30B60W30/1886B60W2510/305B60W2710/025B60W2710/1033B60W2710/305B60Y2200/25B60Y2200/41E01C23/088F16H61/475F16H2059/467
    • PROBLEM TO BE SOLVED: To improve the motion of a self-propelled construction machine in the case of heavy load.SOLUTION: A self-propelled construction machine comprises a chassis 1 including a wheel or caterpillar units 1A, 1B. The construction machine is characterized in that a gear mechanism system 6 for transmitting a drive force from a drive unit 5 including at least one internal combustion engine 5A to a work unit 4 including at least one work assembly 4A comprises a hydrodynamic gear mechanism 10 including a drive shaft 10A and an output shaft 10B in place of a conventional clutch for operating the work unit. The construction machine also comprises a control device 16. The control device 16 is implemented to control the drive force transmitted from the drive unit 5 to the wheel or caterpillar units 1A, 1B via a first power transmission line I in such a manner that a rotation speed difference Δ=n-nbetween the drive shaft and the output shaft of a hydrodynamic transmission device of a second power transmission line II corresponds to a preset value.
    • 要解决的问题:为了改善在重负载的情况下自行式施工机械的运动。 解决方案:自走式施工机械包括一个底盘1,底盘1包括轮子或履带单元1A,1B。 该施工机械的特征在于,用于将包括至少一个内燃机5A的驱动单元5的驱动力传递到包括至少一个工作组件4A的工作单元4的齿轮机构系统6包括流体动力齿轮机构10,其包括: 驱动轴10A和输出轴10B代替用于操作工作单元的常规离合器。 施工机械还包括控制装置16.控制装置16用于通过第一输电线I控制从驱动单元5传递到车轮或履带单元1A,1B的驱动力,使得旋转 驱动轴与第二功率的液力传动装置的输出轴之间的速度差Δ= n 1 -n 2 传输线II对应于预设值。 版权所有(C)2013,JPO&INPIT
    • 20. 发明专利
    • Hydraulic drive unit of wheel-type working vehicle
    • 液压驱动单元车轮式工作车辆
    • JP2013053699A
    • 2013-03-21
    • JP2011193101
    • 2011-09-05
    • Hitachi Constr Mach Co Ltd日立建機株式会社
    • NUMAGUCHI KAZUHIRONIITOME TAKASHITSUBO TAKAHIROYABUUCHI AICHI
    • F16H61/478
    • PROBLEM TO BE SOLVED: To provide a hydraulic drive unit of a wheel-type working vehicle which can limit a traveling drive force according to the discharge pressure of a working device hydraulic pump while suppressing a frequency at which high pressure acts on a traveling hydraulic pump and a traveling hydraulic motor, and can change the upper limit of the traveling drive force on the basis of an intention of an operator.SOLUTION: When the total sum of the discharge pressure Pm of the traveling hydraulic pump 11 and the discharge pressure Pw of the working device hydraulic pump 50 is not smaller than a reference value, a push-away capacity of the traveling hydraulic pump 11 is controlled by supplying the discharge pressure Pm, Pw as pilot pressure to first and second pilot ports 66, 67 of a cutoff valve 61 so that the discharge pressure Pm of the traveling hydraulic pump 11 becomes low as the discharge pressure Pw of the working device hydraulic pump 50 becomes high. Pilot pressure Pc to a third pilot port 68 of the cutoff valve 61 is set by an effect that a controller 85 controls a pressure control valve 83 according an operation position of a dial 80, and by this, the start pressure Ps (reference value) of the cutoff valve 61 is set.
    • 要解决的问题:提供一种车轮式作业车辆的液压驱动单元,其可以在抑制高压作用在工作装置液压泵上的频率的同时,根据工作装置液压泵的排出压力限制行驶驱动力 行驶液压泵和行驶液压马达,并且可以基于操作者的意图来改变行驶驱动力的上限。 解决方案:当行驶液压泵11的排出压力Pm和作业装置液压泵50的排出压力Pw的总和不小于参考值时,行驶液压泵的推离能力 11通过将排出压力Pm,Pw作为先导压力提供给截止阀61的第一和第二先导端口66,67,使得行驶液压泵11的排出压力Pm随着作业的排出压力Pw变低而被控制 装置液压泵50变高。 通过控制器85根据刻度盘80的操作位置来控制压力控制阀83的作用来设定切断阀61的第三先导口68的先导压力Pc,由此,启动压力Ps(基准值) 设定截止阀61。 版权所有(C)2013,JPO&INPIT