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公开(公告)号：US5426874A
公开(公告)日：1995-06-27
申请号：US248197
申请日：1994-05-24
CPC分类号： E02F3/844 , Y10T74/20201
摘要： 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).
摘要翻译： 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。
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公开(公告)号：US5555942A
公开(公告)日：1996-09-17
申请号：US260394
申请日：1994-06-15
CPC分类号： E02F3/844 , E02F9/2029
摘要： A blade control system for use in a bulldozer comprising: a driving mode setting device which can set an automatic blade control mode during dozing operation; a running condition detector for detecting whether a transmission is placed in forward range or reverse range; and a blade controller for controlling tilting and lowering of a blade such that when the speed range detector has detected that the transmission is placed in forward range and the driving mode setting device has set the automatic blade control mode to start digging, the lower end of the blade becomes horizontal in relation to a vehicle body and is brought into contact with the ground.
摘要翻译： 一种用于推土机的叶片控制系统，包括：驱动模式设定装置，其能够在打瞌睡操作期间设定自动叶片控制模式; 运行条件检测器，用于检测变速器是否位于前进档或倒档范围内; 以及叶片控制器，用于控制叶片的倾斜和降低，使得当速度范围检测器检测到变速器被放置在向前范围内并且驾驶模式设置装置已经设置了自动叶片控制模式以开始挖掘时，下端 叶片相对于车身变得水平并且与地面接触。
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公开(公告)号：US5551524A
公开(公告)日：1996-09-03
申请号：US360047
申请日：1994-12-20
CPC分类号： B62D11/08 , B62D11/183
摘要： A remote control apparatus of a construction machine in which steering control is performed by hydraulically controlling the steering clutches and the steering brakes, comprises remote operating unit for generating a first steering command for turning on or off the steering clutches of the construction machine and a second steering command for turning on or off the steering brakes of the construction machine, steering operation of the construction machine being controlled by the first and second steering commands; and a control unit provided in the construction machine, for performing a control in such a manner that when the first steering command becomes on, the steering clutches are released for a duration during which the first steering command is on, and when the second steering command becomes on in the duration during which the first steering command is on, hydraulic pressure of the steering brakes is gradually changed from a releasing side to a braking side with a predetermined gradient. With the control unit, operations can be smooth at the starting time and fine steering control can be realized.
摘要翻译： 一种建筑机械的遥控装置，其中通过液压控制转向离合器和转向制动器进行转向控制，包括用于产生用于打开或关闭施工机械的转向离合器的第一转向指令的远程操作单元，以及第二 用于打开或关闭施工机械的转向制动器的转向命令，由第一和第二转向指令控制的施工机械的转向操作; 以及控制单元，其设置在所述施工机械中，用于以这样的方式执行控制，使得当所述第一转向命令变为接通时，所述转向离合器在所述第一转向命令开启的持续时间内被释放，并且当所述第二转向指令 在第一转向指令开启的持续时间内变为导通，转向制动器的液压以预定的梯度从释放侧逐渐改变到制动侧。 通过控制单元，起动时的动作可以平滑，可以实现精细的转向控制。
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4.发明授权Control unit for controlling load on a bulldozer in the case of manual intervention 失效用于在手动干预的情况下控制推土机负载的控制单元
公开(公告)号：US5515927A
公开(公告)日：1996-05-14
申请号：US255725
申请日：1994-06-07
CPC分类号： E02F9/2029
摘要： A control unit for controlling load on a bulldozer in the case of manual intervention, comprising: an actual tractive force detector for detecting the actual tractive force of a vehicle body; a target tractive force setting device for setting a target tractive force for an automatic blade control mode in dozing operation according to the actual tractive force detected by the actual tractive force detector; and a blade controller for controlling a blade to be lifted or lowered such that, if there is a difference between the target tractive force set by the target tractive force setting device when switching from the automatic blade control mode to a manual operation mode takes place in dozing operation and the actual tractive force detected by the actual tractive force detector when return from the manual operation mode to the automatic blade control mode takes place, the actual tractive force gradually comes closer to the target tractive force set when switching to the manual operation mode takes place.
摘要翻译： 一种用于在手动干预的情况下控制推土机上的载荷的控制单元，包括：用于检测车身的实际牵引力的实际牵引力检测器; 目标牵引力设定装置，用于根据由实际牵引力检测器检测到的实际牵引力，在打瞌睡操作中设定用于自动叶片控制模式的目标牵引力; 以及用于控制叶片被提升或降低的刀片控制器，使得如果在从自动刀片控制模式切换到手动操作模式时由目标牵引力设定装置设定的目标牵引力之间存在差异，则发生 当从手动操作模式返回到自动叶片控制模式时，实际的牵引力检测器检测到的打瞌睡操作和实际牵引力发生，当切换到手动操作模式时，实际牵引力逐渐接近设定的目标牵引力 发生。
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公开(公告)号：US5609547A
公开(公告)日：1997-03-11
申请号：US325869
申请日：1994-10-19
IPC分类号： E02F9/24 , B60K23/00 , B60T7/12 , E02F3/76 , E02F9/20 , E02F9/22 , F02D29/00 , F02D29/02 , F16H59/36 , F16H59/44 , F16H59/70 , F16H59/74 , F16H61/00 , F16H61/14 , F16H61/682 , B60K41/04
CPC分类号： F16H61/143 , B60W10/06 , B60W10/10 , B60W10/18 , B60W30/184 , B60W2300/17 , B60W2510/0638 , B60W2710/0666 , B60W2710/1005 , B60W2710/18 , F16H2061/0477 , F16H59/36 , F16H59/44 , Y10T477/675 , Y10T477/679
摘要： An engine overrun preventing system for a vehicle, in which the overrun of an engine is prevented when the overrun of the engine is detected, by (i) switching a lock-up system provided in a torque convertor OFF to cause a slip, if it is detected that the lock-up system is in its ON state; (ii) shifting a transmission into a speed range which is one grade lower than a presently selected speed range and reducing vehicle speed by engine brake, if it is detected that the lock-up system is in its OFF state and that the transmission is placed in another speed range than a first speed; and (iii) actuating a brake to reduce vehicle speed, if it is detected that the lock-up system is in its OFF state and that the transmission is placed in the first speed and if a detected vehicle speed is equal to a predetermined vehicle speed or more.
摘要翻译： 一种用于车辆的发动机溢出防止系统，其中当检测到发动机超限时防止发动机的超限，通过（i）将设置在扭矩转换器中的锁定系统切换为导致滑动，如果 检测到锁定系统处于其ON状态; （ii）如果检测到所述锁定系统处于其关闭状态并且所述变速器被放置，则将变速器换档到比当前选择的速度范围低一级的速度范围并且通过发动机制动而降低车速 在第一速度的另一个速度范围内; 以及（iii）如果检测到所述锁定系统处于其关闭状态并且所述变速器处于所述第一速度并且如果检测到的车辆速度等于预定车辆速度，则致动制动器以降低车辆速度 或者更多。
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公开(公告)号：US5564507A
公开(公告)日：1996-10-15
申请号：US254886
申请日：1994-06-06
CPC分类号： E02F9/2029
摘要： A load control unit for a bulldozer, comprising an actual tractive force detector for detecting the actual tractive force of a vehicle body; target tractive force setting switch for setting a target tractive force for an automatic blade control mode in dozing operation; and blade controller for controlling a blade to be lifted or lowered such that if there is a difference between the actual tractive force detected by the actual tractive force detector and the target tractive force set by the target tractive force setting switch when digging is started with the automatic blade control mode in dozing operation, the actual tractive force gradually comes closer to the target tractive force.
摘要翻译： 一种用于推土机的负载控制单元，包括用于检测车身的实际牵引力的实际牵引力检测器; 目标牵引力设定开关，用于在打盹操作中设定用于自动叶片控制模式的目标牵引力; 以及用于控制叶片被提升或降低的叶片控制器，使得如果在开始挖掘时由实际牵引力检测器检测到的实际牵引力与由目标牵引力设定开关设定的目标牵引力之间存在差异， 自动叶片控制模式在打瞌睡操作中，实际牵引力逐渐接近目标牵引力。
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公开(公告)号：US5487428A
公开(公告)日：1996-01-30
申请号：US264348
申请日：1994-06-23
IPC分类号： E02F3/85 , E02F3/84 , A01B63/111 , E02F3/76
CPC分类号： E02F3/845
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US5485885A
公开(公告)日：1996-01-23
申请号：US249235
申请日：1994-05-25
IPC分类号： E02F3/84 , E02F3/85 , E02F9/20 , A01B63/112
CPC分类号： E02F9/2029
摘要： A dozing system for a bulldozer, comprising an actual tractive force detector for detecting an actual tractive force of a vehicle body; a target tractive force setting device for setting a target tractive force for a vehicle body; a tractive force deviation calculator for calculating the deviation between the actual tractive force detected by the actual tractive force detector and the target tractive force set by the target tractive force setting device; and a comparison control unit for controlling a blade to be lifted or lowered such that the absolute value of the deviation is increased, when at least the absolute value of the deviation is less than a preset value and tile actual tractive force is approaching the target tractive force.
摘要翻译： 一种用于推土机的推土系统，包括用于检测车身的实际牵引力的实际牵引力检测器; 用于设定车体的目标牵引力的目标牵引力设定装置， 牵引力偏差计算器，用于计算由实际牵引力检测器检测到的实际牵引力与由目标牵引力设定装置设定的目标牵引力之间的偏差; 以及比较控制单元，用于当至少所述偏差的绝对值小于预设值并且平铺实际牵引力正在接近所述目标牵引力时，控制要提升或降低的叶片使得所述偏差的绝对值增加 力。
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公开(公告)号：US5462122A
公开(公告)日：1995-10-31
申请号：US265720
申请日：1994-06-24
CPC分类号： E02F3/842 , F16H61/0213
摘要： An automatic drive control system for a bulldozer comprising a digging start detector for detecting that the bulldozer is in a digging start position, a digging end detector for detecting that the bulldozer is in a digging end position, a driving direction detector for detecting the momentarily varying driving direction of the bulldozer, and a drive controller for shifting a transmission into a forward gear when the digging start detector detects that the bulldozer is presently in the digging start position; shifting the transmission into a reverse gear when the digging end detector detects that the bulldozer is presently in the digging end position; and controlling the bulldozer such that the driving direction detected by the driving direction detector is made coincident with a target driving direction when the bulldozer is moving from the digging start position towards the digging end position.
摘要翻译： 一种用于推土机的自动驱动控制系统，包括用于检测推土机处于挖掘开始位置的挖掘起动检测器，用于检测推土机处于挖掘结束位置的挖掘端检测器，用于检测瞬时变化的驱动方向检测器 以及驱动控制器，用于当挖掘开始检测器检测到推土机当前处于挖掘开始位置时将变速器换档到前进挡; 当挖掘端检测器检测到推土机当前处于挖掘结束位置时，将变速器转换成倒档; 并且当推土机从挖掘开始位置朝向挖掘结束位置移动时，控制推土机使得由行驶方向检测器检测到的行驶方向与目标驱动方向一致。
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公开(公告)号：US5694317A
公开(公告)日：1997-12-02
申请号：US609135
申请日：1996-02-29
CPC分类号： E02F3/844 , E02F9/2029 , F16H61/14 , F16H63/40 , Y10T83/04 , Y10T83/175
摘要： A blade control system for a bulldozer, comprising: (a) a pitch angle detector for detecting a pitch angle of a vehicle body when the vehicle body inclines back and forth; (b) an actual tractive force detector for detecting an actual tractive force of the vehicle body; and (c) a controller for correcting the actual tractive force detected by the actual tractive force detector according to the pitch angle detected by the pitch angle detector and for controlling the blade to be lifted or lowered such that the corrected actual tractive force becomes equal to a target tractive force.
摘要翻译： 一种用于推土机的叶片控制系统，包括：（a）俯仰角检测器，用于当车身前后倾斜时检测车身的俯仰角; （b）用于检测车身的实际牵引力的实际牵引力检测器; 以及（c）控制器，用于根据由俯仰角检测器检测到的桨距角来校正由实际牵引力检测器检测到的实际牵引力，并且用于控制叶片被提升或降低，使得校正的实际牵引力变得等于 目标牵引力。
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