会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明公开
    • WORK MACHINE HYDRAULIC ENERGY REUSING DEVICE
    • 工作机液压能量再利用装置
    • EP3306114A1
    • 2018-04-11
    • EP16802854.6
    • 2016-02-23
    • Hitachi Construction Machinery Co., Ltd.
    • HIJIKATA, SeijiISHIKAWA, KoujiIMURA, Shinya
    • F15B21/14E02F9/22F15B11/00F15B11/08F15B11/16F15B20/00
    • E02F9/2217B60Y2200/412E02F9/2095E02F9/2225E02F9/2235E02F9/2271E02F9/2285E02F9/2292E02F9/2296E02F9/268F15B11/024F15B11/17F15B21/14F15B2211/20576F15B2211/3059F15B2211/30595F15B2211/3157F15B2211/353F15B2211/6313F15B2211/6316F15B2211/7142F15B2211/88
    • A hydraulic fluid energy regeneration system for a work machine capable of securely maintaining a brake pressure even when a solenoid valve or the like is erroneously rendered open by an electrical failure is provided. The hydraulic fluid energy regeneration system for a work machine, including a first hydraulic actuator; a second hydraulic actuator; and a first hydraulic pump that supplies a hydraulic fluid to the first hydraulic actuator via a first hydraulic line, includes: an upper control valve that is connected to a discharge side on which the hydraulic fluid is discharged from the second hydraulic actuator when an object to be driven by the second hydraulic actuator falls under its own weight, and that can regulate a flow rate of the hydraulic fluid discharged from the second hydraulic actuator; a communication hydraulic line that connects the upper control valve to a hydraulic fluid tank; a lower control valve that is provided in the communication hydraulic line and that can regulate a flow rate of the hydraulic fluid discharged from the upper control valve to the hydraulic fluid tank; and a regeneration hydraulic line that has one end side connected to a branch section between the upper control valve and the lower control valve in the communication hydraulic line and that has an other end side connected to the first hydraulic line.
    • 本发明提供一种作业机械的液压流体能量再生系统,即使在由于电气故障而误将电磁阀等打开的情况下,也能够可靠地保持制动压力。 用于作业机械的液压流体能量再生系统,包括第一液压致动器; 第二液压致动器; 以及经由第一液压管线向所述第一液压致动器供应液压流体的第一液压泵,所述第一液压泵包括:上部控制阀,所述上部控制阀连接至排放侧,在所述排放侧,所述液压流体从所述第二液压致动器排出, 由第二液压致动器驱动的第一液压致动器因其自重而下落,并且能够调节从第二液压致动器排出的液压流体的流量; 通信液压管路,其将上部控制阀连接到液压油箱; 下部控制阀,其设置在所述连通油路中,能够调整从所述上部控制阀向所述工作油箱排出的所述工作油的流量; 以及再生液压管线,其一端侧与上述连通油路内的上述上部控制阀与上述下部控制阀之间的分支部连接,另一端侧与上述第一油路连接。
    • 3. 发明公开
    • CONTROLLING AN ELECTRIC PROPORTIONAL VALVE
    • 控制电比例阀
    • EP3243965A1
    • 2017-11-15
    • EP16169558.0
    • 2016-05-13
    • Caterpillar Inc.
    • JACOB, Sebastian
    • E02F9/22F15B11/08
    • E02F9/2296E02F9/2228E02F9/2235F15B11/05F15B11/08F15B2211/20546F15B2211/30525F15B2211/3144F15B2211/327F15B2211/351F15B2211/353F15B2211/6309F15B2211/6313F15B2211/665F15B2211/6652F15B2211/6654F15B2211/7051
    • A method for controlling an electric proportional valve (42) of a hydraulic excavator attachment (28) is disclosed. The electric proportional valve (42) is controllable based on an electric input to the electric proportional valve (42). The electric proportional valve (42) is connected to a hydraulic actuator (34) for actuating the hydraulic excavator attachment (28) and to a hydraulic pump (36) for providing a flow of hydraulic fluid to the electric proportional valve (42). The method comprises operating the hydraulic pump (36) at a desired flow rate depending on the hydraulic excavator attachment (28); setting a desired pressure differential (Δp) over the electric proportional valve (42); determining an actual pressure differential (Δp') over the electric proportional valve (42); determining a pressure deviation (Δp - Δp') between the desired pressure differential (Δp) and the actual pressure differential (Δp'); and operating the electric proportional valve (42) such that the actual pressure differential (Δp') approaches the desired pressure differential (Δp).
    • 公开了一种用于控制液压挖掘机附件(28)的电比例阀(42)的方法。 电比例阀(42)可基于对电比例阀(42)的电输入进行控制。 电比例阀(42)连接到用于致动液压挖掘机附件(28)的液压致动器(34)以及用于向液压泵(36)提供液压流体流到电比例阀(42)的液压泵。 该方法包括根据液压挖掘机附件(28)以期望的流量操作液压泵(36); 在电比例阀(42)上设定所需的压差(Δp); 确定所述电比例阀(42)上的实际压差(Δp'); 确定期望压差(Δp)和实际压差(Δp')之间的压力偏差(Δp-Δp'); 和操作电比例阀(42),使得实际压差(Δp')接近期望压差(Δp)。
    • 7. 发明公开
    • POWER REGENERATION DEVICE FOR WORK MACHINE
    • ENERGIERÜCKFÜHRUNGSVORRICHTUNGFÜREINE ARBEITSMASCHINE
    • EP2672127A1
    • 2013-12-11
    • EP12741503.2
    • 2012-01-20
    • Hitachi Construction Machinery Co., Ltd.
    • FUJISHIMA KazuoSONODA MitsuoHIJIKATA Seiji
    • F15B21/14E02F9/20E02F9/22F15B11/08
    • H02K7/1853E02F9/2075E02F9/2091E02F9/2217E02F9/2285F15B21/14F15B2211/353F15B2211/6654F15B2211/761
    • Disclosed is a motive power regeneration system for a working machine. The motive power regeneration apparatus includes a regeneration circuit (53) that is connected to a hydraulic line (51) through which a returning fluid of a boom cylinder (3A) is distributed during a boom lowering operation and provided with a hydraulic motor (24) connected to a generator (25), a flow regulating circuit (54) that is connected to the hydraulic line (51) and provided with a control valve (5A), an inverter (26) that controls the flow rate on the regeneration circuit (53) in accordance with a first flow rate setting (Q2) which varies with the operation amount of an operating apparatus (4A), and a control valve (5A) and a proportional valve (27) that control the flow rate on the flow regulating circuit (54) in accordance with a second flow rate setting (Q1) which varies with the operation amount of the operating apparatus (4A). Therefore, the motive power regeneration apparatus is capable of making an operator constantly feel comfortable with machine operations.
    • 公开了一种用于工作机器的动力再生系统。 动力再生装置包括再生回路53,该再生回路53连接于在动臂下降动作期间分配有动臂缸(3A)的返回流体的液压线路(51),并具备液压马达(24) 连接到发电机(25),连接到液压管路(51)并设置有控制阀(5A)的流量调节回路(54),控制再生回路上的流量的逆变器(26) 根据操作装置(4A)的操作量而变化的第一流量设定(Q2),以及控制流量调节用流量的控制阀(5A)和比例阀(27) 电路(54)根据随着操作装置(4A)的操作量而变化的第二流量设定(Q1)。 因此,动力再生装置能够使操作者对机器操作感到舒适。
    • 8. 发明公开
    • TRANSPORTATION VEHICLE
    • TRANSPORTFAHRZEUG
    • EP2565076A1
    • 2013-03-06
    • EP11774743.6
    • 2011-03-29
    • Hitachi Construction Machinery Co., Ltd.
    • TAMURA KatsumiMINOSHIMA ToshikazuFUSHIKI MichioKUROSAWA Takao
    • B60P1/16F15B11/00F15B11/04
    • B60P1/162F15B11/042F15B11/044F15B2211/3116F15B2211/351F15B2211/353F15B2211/6313F15B2211/6336F15B2211/665F15B2211/7107F15B2211/755F15B2211/853Y10T137/0971
    • A control valve device (16) comprises two direction control valves (20) and (21). The direction control valve (20) includes an expansion side variable throttle portion (20C) and a contraction side variable throttle portion (20D). The direction control valve (21) includes an expansion side variable throttle portion (21C) and a contraction side variable throttle portion (21D). When a hoist cylinder (10) is telescopically operated to raise or lower a vessel (3), as the hoist cylinder (10) approaches a stop position, a controller (35) determines that the hoist cylinder (10) gets close to the stop position. Based upon this determination, the controller (35) variably adjusts a flow passage area of the direction control valve (20) using the variable throttle portions (20C) and (20D) or variably adjusts a flow passage area of the direction control valve (21) using the variable throttle portions (21C) and (21D) in such a manner as to slow down or speed up the telescopic speed of the hoist cylinder (10) corresponding to the weight in the side of vessel (3).
    • 控制阀装置(16)包括两个方向控制阀(20)和(21)。 方向控制阀(20)包括膨胀侧可变节流部(20C)和收缩侧可变节流部(20D)。 方向控制阀(21)包括膨胀侧可变节流部(21C)和收缩侧可变节流部(21D)。 当提升气缸(10)可伸缩地操作以升高或降低容器(3)时,当提升气缸(10)接近停止位置时,控制器(35)确定提升气缸(10)接近停止 位置。 基于该判断,控制器(35)使用可变节流部(20C)和(20D)可变地调整方向控制阀(20)的流路面积,或者可变地调整方向控制阀(21)的流路面积 )以与减轻或加快对应于容器(3)一侧的重量的起重气缸(10)的伸缩速度的方式,使用可变节流部分(21C)和(21D)。