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    • 2. 发明授权
    • Dozing system for bulldozers
    • 推土机打夯系统
    • US5621643A
    • 1997-04-15
    • US129080
    • 1993-10-07
    • Hiroshi NakagamiShigenori MatsushitaShigeru Yamamoto
    • Hiroshi NakagamiShigenori MatsushitaShigeru Yamamoto
    • E02F3/84E02F3/85E02F9/20F16H61/14F16H63/40B60K28/16
    • E02F3/844E02F9/2029F16H61/14F16H63/40Y10T83/04Y10T83/175
    • A dozing system for a bulldozer with which dozing can be carried out by a simple operation without giving a great deal of fatigue to the operator.When the running slip of a vehicle body is not detected by a running slip detector, a blade is lifted or lowered by a comparison controller such that an actual tractive force of the vehicle body detected by an actual tractive force detector becomes coincident with a target tractive force set by e.g., a dial, whereby the amount of loads applied to the blade by excavating and moving earth can be maintained constant. On the other hand, when the running slip of the vehicle body is detected by the running slip detector, the comparison controller lifts the blade, thereby reducing the amount of loads applied to the blade by excavating and moving earth in order to eliminate the running slip.
    • PCT No.PCT / JP92 / 00457 Sec。 371日期:1993年10月7日 102(e)日期1993年10月7日PCT提交1992年4月10日PCT公布。 WO92 / 18706 PCT公开号 日期1992年10月29日推土机推土机系统可以通过简单的操作进行打瞌睡,而不会给操作人员带来很大的疲劳。 当运行滑行检测器没有检测到车体的行驶滑移时,通过比较控制器提升或降低叶片,使得由实际牵引力检测器检测到的车体的实际牵引力与目标牵引力一致 通过例如表盘设置的力,由此通过挖掘和移动地球施加到叶片的负载量可以保持恒定。 另一方面,当由行驶滑行检测器检测到车体的行驶滑移时,比较控制器提升叶片,从而通过挖掘和移动地球来减少施加到叶片的载荷量,以消除运行滑移 。
    • 4. 发明授权
    • Scraper blade control apparatus
    • 刮刀控制装置
    • US5426874A
    • 1995-06-27
    • US248197
    • 1994-05-24
    • Kazushi NakataShigenori MatsushitaShigeru YamamotoShu h-uai ZhangSatoru Nihsida
    • Kazushi NakataShigenori MatsushitaShigeru YamamotoShu h-uai ZhangSatoru Nihsida
    • E02F3/85E02F3/84E02F3/28
    • E02F3/844Y10T74/20201
    • In an apparatus for controlling the vertical movement of a scraper blade (18) of a bulldozer, a four-position hydraulic control valve (12), having HOLD, UP, DOWN, and FLOAT positions, maintains the scraper blade in the FLOAT condition without requiring a detent mechanism, even when the three-position operation lever (1, 51) is released with the hydraulic control valve (12) in the FLOAT position. The operation lever (1, 51), having HOLD, UP, and DOWN positions, provides electrical signals to a controller (4) for actuating the hydraulic control valve (12) with pilot pressures provided via solenoid pilot valves (6, 7). A hydraulic cylinder (19), connected to the scraper blade (18), is actuated by hydraulic oil from the hydraulic control valve (12). A control device (2, 52), for generating an electrical signal for the FLOAT position and transmitting that electrical signal to the controller (4), is provided on the three-position operation lever (1, 51), so that the hydraulic control valve (12) is held at the FLOAT position in response to the electrical signal from the control device (2, 52).
    • 在用于控制推土机的刮刀(18)的垂直运动的装置中,具有HOLD,UP,DOWN和FLOAT位置的四位液压控制阀(12)将刮刀保持在FLOAT状态而没有 即使当液压控制阀(12)处于FLOAT位置时释放三位操作杆(1,51)时,也需要制动机构。 具有HOLD,UP和DOWN位置的操作杆(1,51)向控制器(4)提供用于通过电磁导阀(6,7)提供先导压力来驱动液压控制阀(12)的电信号。 连接到刮刀(18)的液压缸(19)由液压控制阀(12)的液压油致动。 用于产生用于FLOAT位置的电信号并将该电信号传送到控制器(4)的控制装置(2,52)设置在三位操作杆(1,51)上,使得液压控制 响应于来自控制装置(2,52)的电信号,阀(12)保持在FLOAT位置。
    • 5. 发明授权
    • Steering control of tracked vehicle
    • 跟踪车辆的转向控制
    • US5325933A
    • 1994-07-05
    • US994626
    • 1992-12-21
    • Shigenori Matsushita
    • Shigenori Matsushita
    • B62D11/08B62D11/18F16D67/04
    • B62D11/08B62D11/183
    • A steering control system for a tracked vehicle having a left track and a right track, e.g., a bulldozer, assures smooth turning performance in a normal steering operation, provides a comfortable ride, and is durable. Power is transmitted to the right and left tracks via right and left drive sprockets having right and left driving shafts, with the right driving shaft being coupled to an output shaft of a speed change gear via a right clutch and a right brake, and the left driving shaft being coupled to the output shaft via a left clutch and a left brake. The steering control system includes electrically actuated proportional control valves (19R, 19L, 20R, 20L) for separately controlling the right clutch, the left clutch, the right brake and the left brake; a steering lever (15); a steering signal generator (15a) for generating a steering signal corresponding to the operation of the steering lever; and a controller (17) for inputting the steering signal and for outputting a steering control signal to the electrically actuated proportional control valves (19R, 19L, 20R, 20L). The time interval from the disengagement of a clutch to the engagement of the associated brake is controlled to obtain smooth steering characteristics.
    • 用于具有左轨道和右轨道(例如推土机)的履带式车辆的转向控制系统确保了在正常转向操作中的平稳转动性能,提供舒适的行驶并且是耐用的。 左右驱动链轮通过左右驱动链传递到左右轨道,右驱动轴通过右离合器和右制动器联接到变速齿轮的输出轴,左驱动链 驱动轴通过左离合器和左制动器联接到输出轴。 转向控制系统包括用于分别控制右离合器,左离合器,右制动器和左制动器的电致动比例控制阀(19R,19L,20R,20L) 转向杆(15); 用于产生对应于转向杆的操作的转向信号的转向信号发生器(15a) 以及用于输入转向信号并将转向控制信号输出到电致动比例控制阀(19R,19L,20R,20L)的控制器(17)。 从离合器的分离到相关联的制动器的接合的时间间隔被控制以获得平稳的转向特性。
    • 9. 发明授权
    • Steering system for a bulldozer
    • 推土机转向系统
    • US5503232A
    • 1996-04-02
    • US306409
    • 1994-09-15
    • Shigenori MatsushitaShigeru YamamotoShu H. Zhang
    • Shigenori MatsushitaShigeru YamamotoShu H. Zhang
    • E02F3/85B62D11/08B62D11/18E02F9/20F16D67/04
    • B62D11/08B62D11/183
    • A steering system for a bulldozer, comprising a steering direction indicating device for indicating a lateral direction in which a vehicle body is to be steered, a dozing operation detector for judging by detection whether the bulldozer is in dozing operation, a steering controller for controlling the vehicle body to be steered in the lateral direction indicated by the steering direction indicating device when the dozing operation detector judges that the bulldozer is in dozing operation, by tilting a blade in the indicated lateral direction in order to impose offset load on the vehicle body, and by causing a difference between the relative travel speeds of right and left crawler belts attached to the vehicle body at least when light load occurs in the dozing operation.
    • 一种用于推土机的转向系统,包括用于指示要转向车体的横向的转向指示装置,用于通过检测来判断推土机是否处于打瞌睡操作的打瞌睡操作检测器,用于控制车身的转向控制器 当打盹操作检测器判断推土机处于打瞌睡操作时,通过在所指示的横向方向上倾斜叶片以在车身上施加偏移载荷,在由转向方向指示装置指示的横向方向上转向的车身, 并且至少在打瞌睡操作中发生轻负载时,使安装在车身上的左右履带的相对行驶速度之间的差异。
    • 10. 发明授权
    • Straight-ahead traveling control system for a bulldozer
    • 推土机直行行驶控制系统
    • US5487428A
    • 1996-01-30
    • US264348
    • 1994-06-23
    • Shigeru YamamotoShigenori MatsushitaShu huai ZhangSatoru NishitaKazushi Nakata
    • Shigeru YamamotoShigenori MatsushitaShu huai ZhangSatoru NishitaKazushi Nakata
    • E02F3/85E02F3/84A01B63/111E02F3/76
    • E02F3/845
    • A straight-ahead traveling control system for a bulldozer comprising: (a) a driving mode setting device which can set an automatic blade control mode for dozing operation; (b) a yaw angle detector for detecting the yaw angle of a vehicle body in relation to a target traveling direction for the vehicle body; (c) a blade tilt angle detector for detecting the tilt angle of the blade tilting laterally in relation to the ground; and (d) a blade controller for controlling tilting of the blade based on a first blade tilting amount used for driving the vehicle body straight ahead and a second blade tilting amount used for forming a laterally horizontal earth surface after digging by the blade, the first blade tilting amount being obtained from the yaw angle of the vehicle body detected by the yaw angle detector and the second blade tilting amount being obtained from the tilt angle of the blade detected by the blade tilt angle detector, when the driving mode setting device has set the automatic blade control mode.
    • 一种用于推土机的直行行驶控制系统,包括:(a)可设定用于打瞌睡操作的自动叶片控制模式的驾驶模式设定装置; (b)偏航角检测器,用于检测车身相对于车体的目标行驶方向的偏航角; (c)叶片倾斜角检测器,用于检测叶片相对于地面横向倾斜的倾斜角; 以及(d)叶片控制器,用于基于用于驱动车体直线前方的第一叶片倾斜量和用于在由叶片挖掘之后形成横向水平地面的第二叶片倾斜量来控制叶片的倾斜,第一 当由驾驶模式设定装置设定时,从由偏航角检测器检测到的车体的偏航角获得的叶片倾斜量和由叶片倾斜角检测器检测到的叶片的倾斜角度获得的第二叶片倾斜量 自动刀片控制模式。