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    • 1. 发明公开
    • HYDRAULIC PUMP CONTROL DEVICE FOR CONSTRUCTION MACHINERY
    • REGELUNGSANORDNUNG EINER液压泵FÜRBAUMASCHINEN。
    • EP0667451A1
    • 1995-08-16
    • EP90910897.9
    • 1990-07-27
    • KABUSHIKI KAISHA KOMATSU SEISAKUSHO
    • MORIYA, YukioKINOSHITA, ShigeruONODA, TakumiYOKOYAMA, Toshio
    • F04B49/00F15B11/02E02F9/20E02F9/22F04B49/06
    • E02F9/2235E02F9/2292E02F9/2296F04B49/065F04B2203/0209F04B2205/05F04B2207/041
    • A hydraulic pump control device to be used for construction machinery, which is provided with first and second hydraulic pumps driven by the engine, and hydraulic actuators connected to said first and second hydraulic pumps through first and second operation valves. The values of surplus horse power ΔHP 1 and AHP 2 are calculated on the basis of values of standard allowable suction horse power set for the first and second hydraulic pumps and the values of actual suction horse power (HP 1 (HP2) of these pumps, and allowable discharge quantities (V 1P ), (Vp) are calculated on the basis of the number (N) of revolutions of the engine, the values of discharge pressure (P 1 (P2) of hydraulic pumps, the values of the surplus horse power, and the values of the standard allowable suction horse power. The smaller one out of the target discharge quantity and allowable discharge quantity is selected as minimum target discharge quantities (V 1 (V2) and angles of swash plates of the hydraulic pumps are controlled so that these quantities are set at every hydraulic pump. Accordingly, the values of the suction horse power of the hydraulic pumps are properly controlled in a state wherein the sum of values of the standard allowable suction horse power is kept constant.
    • 一种用于工程机械的液压泵控制装置,其具有由发动机驱动的第一和第二液压泵,以及通过第一和第二操作阀连接到所述第一和第二液压泵的液压致动器。 剩余马力DELTA HP1和DELTA HP2的值基于第一和第二液压泵的标准允许吸力马力值和这些泵的实际吸马力(HP1),(HP2)的值计算 ,根据发动机的转数(N),液压泵的排出压力(P1),(P2)的值,剩余量的值,计算出允许排放量(V1P),(VP) 马力,以及标准允许吸力马力的值。 选择目标排放量和允许排放量中较小的一个作为最小目标排放量(V1),(V2),并且控制液压泵的斜盘角度,使得这些量被设置在每个液压泵处。 因此,在标准允许吸力马力的值的总和保持恒定的状态下,适当地控制液压泵的抽吸马力的值。
    • 6. 发明公开
    • HYDRAULIC APPARATUS FOR CONSTRUCTION MACHINES
    • 液压油GERÄTFÜRBAUMASCHINEN。
    • EP0344311A1
    • 1989-12-06
    • EP88900588.0
    • 1987-12-25
    • KABUSHIKI KAISHA KOMATSU SEISAKUSHO
    • NISHIDA, KimioYOKOYAMA, ToshioMORIYA, YukioKOBAYASHI, Takeshi
    • F04B49/06
    • F04B49/20F04B49/065F04B2203/0605F04B2205/05
    • A hydraulic apparatus for a construction machine, which is adapted to prevent the speed of rotation of an engine from increasing when a discharge flow of oil from a variable- capacity hydraulic pump driven by the engine is cut off. The hydraulic apparatus is provided with a proportional solenoid (11) connected to a fuel control lever (13) so as to vary the horsepower characteristics of the engine, which are set by an operation of a governor (12) based on the quantity of movement of the fuel supply control lever (13), when a discharge flow of oil from the pump is cut off, and a controller (10) for use in controlling the proportional solenoid (11). In this apparatus, a quantity of decrease (ANr) in a target number of revolutions per minute (Nr) of the engine, which can be obtained by subtracting a target number of revolutions per minute (Nrb) of the engine represented by the desired engine horsepower characteristics (I 2 ) from a target number of revolutions per minute (Nra) of the engine represented by the initial engine horsepower characteristics (I 1 ), is determined, and the proportional solenoid (11) is operated in accordance with this quantity of decrease.
    • 比例螺线管(11)连接到燃料控制杆(13),以便改变通过调节器(12)的操作基于燃料供给控制器的运动量来设定的发动机的马力特性 当来自泵的油的排放流被切断时,杠杆(13)。 通过从发动机的每分钟的目标转数中减去由期望的发动机功率特性表示的发动机的每分钟的目标转速可以获得的发动机的每分钟目标转数的减少量 由初始发动机功率特性表示,并且根据该减小量操作比例螺线管(11)。
    • 8. 发明公开
    • TEACHING/PLAYBACK METHOD OF WORKING MACHINE
    • LEHR-ODER ABSPIELMETHODEFÜRERDBEWEGUNGSMASCHINE。
    • EP0448716A1
    • 1991-10-02
    • EP90900989.6
    • 1989-12-18
    • KABUSHIKI KAISHA KOMATSU SEISAKUSHO
    • MORIYA, YukioYOKOYAMA, ToshioTAKAMURA, FujitoshiONODA, Takumi
    • E02F9/20
    • E02F3/438E02F9/2296
    • The teaching/playback method of a working machine in accordance with the present invention is the method which is used for automating the operations of a hydraulic excavator and other construction equipment. The operations of a working machine actuator by an operator are stored and are played back in order to carry out automatically the same operation. Particularly, the present method makes it possible to carry out the same operation as the operation at the time of teaching even when a load condition to the working machine actuator at the time of teaching changes at the time of playback. To this end, a pump delivery quantity at the time of teaching and a feed flow rate to each working machine actuator are stored. When the pump delivery quantity changes due to the change of the load at the time of playback, an output control of an engine is conducted so that the pump delivery quantity is in conformity with the delivery quantity at the time of teaching. When the feed flow rate to the working machine actuator changes, a flow rate regulating valve disposed in its inflow circuit is controlled so that the pump delivery quantity is also in conformity with the flow rate at the time of teaching.
    • 根据本发明的加工机的教学/播放方法是用于使液压挖掘机和其他施工设备的操作自动化的方法。 存储操作者的作业机械执行器的操作并进行重放,以便自动执行相同的操作。 特别地,本方法能够执行与教导时的操作时相同的操作,即使当在重放时教学时变化时对工作机械致动器的负载状态。 为此,存储了教导时的泵输送量和向各个作业机械致动器的供给流量。 当由于重放时的负载变化导致泵输送量变化时,进行发动机的输出控制,使得泵输送量与教导时的输送量一致。 当对作业机械致动器的供给流量变化时,控制设置在其流入回路中的流量调节阀,使得泵输送量也与教导时的流量一致。
    • 9. 发明公开
    • LINEAR EXCAVATION CONTROL APPARATUS IN HYDRAULIC EXCAVATOR
    • STEUERUNG EINES HYDRAULISCHEN BAGGERS ZUM LINEAR BAGGERN。
    • EP0436740A1
    • 1991-07-17
    • EP90911699.8
    • 1990-08-02
    • KABUSHIKI KAISHA KOMATSU SEISAKUSHO
    • MORIYA, YukioKINOSHITA, ShigeruONODA, TakumiYOKOYAMA, Toshio
    • E02F3/43E02F9/20
    • E02F3/437
    • This invention relates to linear excavation by a hydraulic excavator, such as a power shovel, having three service machines, a boom, an arm and a bucket. An oil pressure in an oil chamber on the boom-down side of a boom cylinder is introduced into a tank while kept at a predetermined set pressure at the time of linear excavation and the oil pressure on the boom-up side is led to the tank through a check valve for inhibiting the outflow of the oil so as to keep the boom under a so-called "float state" and to execute linear excavation by the operation of only the arm and the bucket. The present invention disposes also an automatic bucket driving system for driving and controlling automatically the bucket to a set bucket angle and operation this automatic bucket driving system at the time of linear excavation so as to further reduce the load on the operator.
    • 作为动力铲的液压挖掘机的线性挖掘,具有三台服务机器,一个起重臂,一个臂和一个铲斗。 在动力缸缸体的动臂下降侧的油室中的油压在线性挖掘时保持在预定的设定压力下,并且动臂上升侧的油压被引导到油箱 通过用于抑制油的流出的止回阀,以便将动臂保持在所谓的浮动状态,并且仅通过手臂和铲斗的操作进行线性挖掘。 该装置还配置有自动铲斗驱动系统,用于在线性挖掘时将铲斗自动地驱动和控制到设定的铲斗角度并对其进行自动铲斗驱动系统的控制,以进一步减少操作员的负担。 @(33pp Dwg.No.3/7)@。