-
公开(公告)号：US5620053A
公开(公告)日：1997-04-15
申请号：US378839
申请日：1995-01-26
申请人： Nobuhisa Kamikawa , Toshikazu Okada , Hidekazu Nagase , Naomi Kobayashi , Hiroshi Itogawa , Noriaki Namiki , Norihisa Matsumoto , Shigeru Yamamoto
发明人： Nobuhisa Kamikawa , Toshikazu Okada , Hidekazu Nagase , Naomi Kobayashi , Hiroshi Itogawa , Noriaki Namiki , Norihisa Matsumoto , Shigeru Yamamoto
CPC分类号： E02F9/2292 , E02F3/7618 , E02F3/844 , E02F9/2004 , E02F9/2296
摘要： A hydraulic drive system for the pitch cylinders (4A, 4B) of a bulldozer blade apparatus can include (a) main hydraulic pumps (30A, 30B) and an assistant hydraulic pump (31) to make up the assistant hydraulic circuit, (b) variable displacement hydraulic pumps (21A, 21B), or (c) fixed displacement hydraulic pumps (30A, 30B) and a plurality of solenoid selector valves such that the pitch cylinders can be connected in series. The assistant hydraulic pump (31) is connectable to delivery lines of the main hydraulic pumps through an assistant solenoid selector valve (32) which is controlled by an external signal. The blade (10) can be formed so that a line (14) tangential to the lower edge of the curved panel of the blade is inclined rearwardly with respect to the front face (13) of the blade edge member (12). Earth-moving work can be performed by inclining the blade (10) rearwardly by an angle (.theta..sub.1) with respect to its posture in digging work, and earth-dumping work can be performed by inclining the blade (10) forwardly by an angle (.theta..sub.2) with respect to its posture in digging work. The coupling positions of the two pitch cylinders (4A, 4B) can be in asymmetrical relation to each other. Control signals can be provided by a blade lever (23), tilt/pitch changeover switch (24), and pitch speed changeover switch (25). The tilt/pitch changeover switch (24) and pitch speed changeover switch (25) can be replaced by pitch-dump selector switch (25A) and pitch-back selector switch (24A).
摘要翻译： 用于推土机叶片装置的变桨缸（4A，4B）的液压驱动系统可以包括：（a）主液压泵（30A，30B）和辅助液压泵（31），以组成辅助液压回路;（b） 可变排量液压泵（21A，21B）或（c）固定排量液压泵（30A，30B）和多个电磁选择阀，使得变桨缸可以串联连接。 辅助液压泵（31）可通过由外部信号控制的辅助电磁换向阀（32）连接到主液压泵的输送管线。 叶片（10）可以形成为使得与叶片的弯曲面板的下边缘相切的线（14）相对于叶片边缘构件（12）的前表面（13）向后倾斜。 地面移动作业可以通过在挖掘作业中将叶片（10）相对于其姿势向后倾斜角度（θ1）来执行，并且可以通过将叶片（10）向前倾斜角度 （θ2）相对于其在挖掘工作中的姿势。 两个变桨缸（4A，4B）的联接位置可以彼此不对称。 控制信号可由叶片杆（23），倾斜/俯仰切换开关（24）和俯仰速度转换开关（25）提供。 俯仰/俯仰切换开关（24）和俯仰速度切换开关（25）可以由倾倒切换选择开关（25A）和俯仰式选择开关（24A）代替。
-
公开(公告)号：US5983151A
公开(公告)日：1999-11-09
申请号：US849182
申请日：1997-05-28
CPC分类号： F02D29/04
摘要： A tractive force control apparatus and method for preventing a torque converter from being stalled while a working machine is operated during excavation and earth carrying work using a construction machine. In this apparatus, an engine rotational speed sensor (2), a torque converter output shaft rotational speed sensor (4) and a lift combination solenoid valve (12) are connected to a control apparatus. A pilot pressure control valve (11) for a blade lift is connected to a first lift operating valve (13), and also to a second lift operating valve (14) via the lift combination solenoid valve (12). First and second hydraulic pumps (20, 21) and lift cylinders (15, 15) are connected respectively via the first and second lift operating valves (13, 14). A traction output is computed in the control apparatus (16), and, when the traction output is lower than a target level, the lift combination solenoid valve (12) is turned off to reduce a flow rate of oil to the lift cylinders (15, 15). The traction force is thus increased correspondingly to prevent a torque converter (3) from being stalled.
摘要翻译： PCT No.PCT / JP95 / 02374 371日期1997年5月28日 102（e）日期1997年5月28日PCT提交1995年11月21日PCT公布。 公开号WO96 / 17136 日期1996年6月6日一种牵引力控制装置和方法，用于在使用建筑机械的挖掘和承载作业期间在工作机械运行时防止变矩器停转。 在该装置中，发动机转速传感器（2），变矩器输出轴转速传感器（4）和升降组合电磁阀（12）连接到控制装置。 用于叶片提升的先导压力控制阀（11）连接到第一提升操作阀（13），并且还经由提升组合电磁阀（12）连接到第二提升操作阀（14）。 第一和第二液压泵（20,21）和提升缸（15,15）分别经由第一和第二提升操作阀（13,14）连接。 在控制装置（16）中计算牵引输出，并且当牵引输出低于目标水平时，提升组合电磁阀（12）被关闭以降低到提升缸（15）的油流量 ，15）。 因此，相应地增加牵引力以防止变矩器（3）停转。
-
公开(公告)号：US5950141A
公开(公告)日：1999-09-07
申请号：US796263
申请日：1997-02-06
CPC分类号： E02F3/845 , E02F9/2029 , E02F9/2292
摘要： During dozing operation, the amount of earth (i.e., load factor) accumulated on the front face of a blade is automatically detected independently of the operator's perception and, based on the detection, the dozing operation is automatically shifted from digging to carrying. The load factor is calculated by obtaining a horizontal reaction force and a vertical reaction force exerted on the blade during digging and by calculating the ratio of the vertical reaction force to the horizontal reaction force. When the load factor reaches a specified value, the blade is automatically controlled to incline backward to hold the earth.
摘要翻译： 在打瞌睡操作期间，独立于操作者的感知自动检测累积在叶片前面的地球量（即，负荷因子），并且基于检测，打瞌睡操作被自动地从挖掘转移到携带。 通过在挖掘期间获得施加在叶片上的水平反作用力和垂直反作用力以及通过计算垂直反作用力与水平反作用力的比来计算载荷系数。 当负载系数达到规定值时，刀片自动控制向后倾斜以保持地球。
-
公开(公告)号：US5558590A
公开(公告)日：1996-09-24
申请号：US188440
申请日：1994-01-28
CPC分类号： B62D11/08 , B62D11/183 , Y10T477/10 , Y10T477/606
摘要： A geared steering device (30) selectively operates rightside and leftside driving mechanisms (2,3) of a crawler vehicle (1) for more efficient operation of the crawler vehicle. The geared steering device (30) comprises a power input drive element (33) for inputting a driving power from a prime mover (7), rightside and leftside steering brakes (38R, 38L), rightside and leftside direct-coupled clutches (36, 44), a turn clutch (46), three arrays of planet gear trains (40, 43 and 48), and power output shafts (32R, 32L) coupled to right and leftside steering brake hubs (34R, 34L). A control unit compares an actual steering ratio of a geared steering device (30) with a designated steering ratio, outputs control signals to respective solenoid valves for controlling the direct-coupled clutches, the turn clutch or a steering brake so as to cause the actual steering ratio to approximate the designated steering ratio. The control unit outputs an engagement signal to the one of the direct-coupled clutches (36 and 44) on the side opposite to a steering direction entered by the steering lever (57).
摘要翻译： 齿轮转向装置（30）选择性地操作履带车辆（1）的右侧和左侧驱动机构（2,3），以更有效地操作履带车辆。 齿轮转向装置（30）包括用于从原动机（7），右侧和左侧转向制动器（38R，38L）输入驱动力的动力输入驱动元件（33），右侧和左侧直接离合器（36， 44），转动离合器（46），行星齿轮系（40,43和48）的三个阵列以及联接到右侧和右侧转向制动轮毂（34R，34L）的动力输出轴（32R，32L）。 控制单元将齿轮转向装置（30）的实际转向比与指定的转向比进行比较，将控制信号输出到用于控制直接离合器，转向离合器或转向制动器的各个电磁阀，以使实际 转向比接近指定转向比。 所述控制单元在与所述转向杆（57）输入的转向方向相反的一侧向所述直接离合器（36和44）中的一个输出接合信号。
-
公开(公告)号：US05996703A
公开(公告)日：1999-12-07
申请号：US297264
申请日：1999-04-28
申请人： Shigeru Yamamoto , Hidekazu Nagase
发明人： Shigeru Yamamoto , Hidekazu Nagase
CPC分类号： E02F9/2292 , E02F3/845 , E02F9/2029 , E02F9/2285
摘要： Smooth, effective dumping is achieved by automating. A switching point, at which a carrying mode is switched to a dumping mode during automatic driving in a dozing operation, is set beforehand. A dumping attitude of the blade is also preset for a desired traveling distance of the bulldozer from the switching point to a dumping point. The actual traveling distance of the bulldozer from the switching point is detected, based on which the blade is controlled so as to take the preset attitude.
摘要翻译： PCT No.PCT / JP97 / 03958 Sec。 371日期1999年4月28日第 102（e）1999年4月28日PCT PCT 1997年10月29日PCT公布。 第WO98 / 24986号公报 日期1998年6月11日通过自动化实现了有效的倾销。 预先设定在打瞌睡操作期间自动驾驶期间将携带模式切换到倾倒模式的切换点。 刀片的倾倒姿态也预设为推土机从切换点到倾倒点的期望行驶距离。 检测到推土机从切换点的实际行驶距离，基于该距离控制叶片以采取预设姿态。
-
公开(公告)号：US5875854A
公开(公告)日：1999-03-02
申请号：US76004
申请日：1998-05-12
申请人： Shigeru Yamamoto , Hidekazu Nagase
发明人： Shigeru Yamamoto , Hidekazu Nagase
CPC分类号： E02F9/2292 , E02F3/432 , E02F3/845 , E02F9/2029 , E02F9/2285
摘要： A dozing system for use in a bulldozer, which is capable of performing an automatic dozing operation, according to working conditions and soil properties in the field. In this system, data on the relationships of the actual traveling distance of the bulldozer with actual tractive force exerted on the blade, with the position of the cutting edge of the blade relative to the ground, with the ratio of the amount of excavated soil loaded on the front surface of the blade to the loading capacity of the front surface of the blade, and with the pitch angle of the blade are stored, and based on the stored data, the blade is controlled so as to assume the desired position.
摘要翻译： 一种用于推土机的推土系统，其能够根据现场的工作条件和土壤性质进行自动打瞌睡操作。 在该系统中，推土机的实际行驶距离与施加在叶片上的实际牵引力之间的关系的数据与叶片的切割边缘相对于地面的位置相关联，其中挖掘的土壤的装载量 在叶片的前表面上与叶片的前表面的承载能力以及叶片的桨距角被存储，并且基于所存储的数据，控制叶片以便呈现期望的位置。
-
公开(公告)号：US06230107B1
公开(公告)日：2001-05-08
申请号：US09137848
申请日：1998-08-21
IPC分类号： G01P2100
摘要： Correction for compensating for errors caused by the pitching movement of a vehicle is executed with high accuracy at low cost. The ground speed of the vehicle sensed by a Doppler sensor is corrected with angular velocities with respect to the center of gravity of the vehicle. In this correction, the center of rotation of the vehicle and the rotation of the Doppler sensor itself during the pitching movement of the vehicle are taken into account. In order to mount the Doppler sensor at a high level in the vehicle without increasing the output power of the sensor, arrangement is made such that the relationship between the difference between the actual installation level of the Doppler sensor and a reference installation level and the amount of correction of beam depression angle is stored in a look-up table; the beam depression angle corresponding to the actual installation level of the Doppler sensor is calculated through correction with the corresponding correction amount of the table; and the sensed ground speed of the vehicle is corrected with the calculated beam depression angle.
摘要翻译： 以低成本高精度地执行用于补偿由车辆的俯仰运动引起的误差的校正。 由多普勒传感器感测到的车辆的地面速度相对于车辆的重心以角速度被校正。 在该校正中，考虑车辆的俯仰运动期间车辆的旋转中心和多普勒传感器本身的旋转。 为了在车辆中高度安装多普勒传感器而不增加传感器的输出功率，可以进行布置，使得多普勒传感器的实际安装水平与参考安装水平之间的差异与量 光束抑制角度的校正被存储在查找表中; 通过用表的对应校正量校正计算与多普勒传感器的实际安装水平相对应的光束俯仰角; 并且利用计算出的光束下降角来校正车辆的感测到的地面速度。
-
公开(公告)号：US6129158A
公开(公告)日：2000-10-10
申请号：US331227
申请日：1999-06-18
申请人： Shigeru Yamamoto , Hidekazu Nagase
发明人： Shigeru Yamamoto , Hidekazu Nagase
CPC分类号： E02F3/845 , E02F9/2203 , E02F9/2285 , E02F9/2292
摘要： An extensive torsional force exerted on a vehicle body frame due to an operation of blade lift cylinders can be avoided. Determination is made to identify an occurrence condition which causes a torsional force on a vehicle body frame due to an operation of the blade lift cylinders 9. If a condition which causes a torsional force is identified, pressure oil supplied to the blade lift cylinders 9 through a lift control valve 26 is interrupted, thereby stopping the operation of the blade lift cylinders 9. Alternatively, the operation speed of the blade lift cylinders 9 may be reduced by limiting the flow rate of pressure oil supplied to the blade lift cylinders 9.
摘要翻译： PCT No.PCT / JP97 / 03957 Sec。 371日期：1999年6月18日 102（e）1999年6月18日PCT 1997年10月29日PCT PCT。 公开号WO98 / 29615 PCT 日期1998年7月9日可以避免由于叶片提升液压缸的操作而施加在车体框架上的广泛的扭转力。 确定由于叶片提升缸9的操作而导致车身框架上的扭转力的发生状况。如果识别到引起扭转力的状况，则将压力油供应到叶片提升缸9至 升降控制阀26被中断，从而停止叶片提升缸9的操作。或者，可以通过限制供应到叶片提升缸9的压力油的流量来减小叶片提升缸9的操作速度。
-
9.发明授权Dozing system for controlling a cutting angle of a bulldozer blade during dozing operation 失效打瞌睡系统用于在推土机操作期间控制推土机叶片的切割角度
公开(公告)号：US5984018A
公开(公告)日：1999-11-16
申请号：US960452
申请日：1997-10-29
申请人： Shigeru Yamamoto , Hidekazu Nagase
发明人： Shigeru Yamamoto , Hidekazu Nagase
CPC分类号： E02F3/845 , E02F3/844 , E02F9/2029
摘要： A dozing system that enables automatic control for all kinds of soil properties and less frequently requires manual control intervention. The system is designed such that the blade is lifted or lowered at a start of excavation in dozing operation in an automatic drive mode such that the actual cutting angle .theta. of a blade detected by an actual cutting angle detector becomes coincident with a target cutting angle (maximum cutting angle) .theta..sub.0 preset by a target cutting angle setting device.
摘要翻译： 一种能够自动控制各种土壤性质并且不太频繁的推土系统需要手动控制干预。 该系统被设计成使得在自动驱动模式下的打盹操作中，在挖掘开始时叶片被提升或降低，使得由实际切割角度检测器检测到的叶片的实际切割角度θ与目标切割角度一致（ 最大切割角度）θ0由目标切割角度设定装置预设。
-
公开(公告)号：US06181999B2
公开(公告)日：2001-01-30
申请号：US09230951
申请日：1999-02-04
申请人： Shigeru Yamamoto , Hidekazu Nagase
发明人： Shigeru Yamamoto , Hidekazu Nagase
IPC分类号： G06F770
CPC分类号： E02F3/844 , E02F9/2029
摘要： A dozing system for a bulldozer capable of providing high operational efficiency in dozing operation and a smooth excavation face. If it is determined when operation is performed in an automatic digging mode that the load exerted on the blade is stable, a target position for the cutting edge relative to the ground is corrected to the actual position of the cutting edge at that time. According to the ratio of the amount of excavated soil loaded on the front surface of the blade to the loading capacity of the blade front surface and/or the stability of the load exerted on the blade, a switching is performed between a weight characteristic for the operation amount of the load control and a weight characteristic for the operation amount of the smoothing control. Further, a map for correlating actual travel distance with the position of the blade cutting edge is prepared, and stable cutting edge positions are accumulated in each respective cycle and averaged to obtain an optimum target value for the smoothing control.
摘要翻译： 一种推土机推土机系统，能够提供打瞌睡操作的高操作效率和平滑的挖掘面。 如果在自动挖掘模式下执行操作以确定施加在刀片上的负载是稳定的，则将切削刃相对于地面的目标位置校正为当时切削刃的实际位置。 根据负载在叶片前表面上的挖掘土量与叶片前表面的承载能力和/或施加在叶片上的载荷的稳定性的比例，在 负载控制的操作量和平滑控制的操作量的重量特性。 此外，准备将实际行驶距离与刀片切削刃的位置进行关联的图，并且在各个循环中累积稳定的切削刃位置并进行平均，以获得用于平滑控制的最佳目标值。
-
-
-
-
-
-
-
-
-
搜索结果
12 条记录 (耗时 0.028 秒)
