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公开(公告)号：US06502654B2
公开(公告)日：2003-01-07
申请号：US09861390
申请日：2001-05-18
IPC分类号： B62D33027
CPC分类号： E05D15/505 , B60D1/141 , B62D33/027 , B62D49/0614 , E05D3/10 , E05D15/5214 , E05Y2900/516 , E05Y2900/544
摘要： A utility transport tractor having a cargo box above the rear axle with the operator's platform forward of the rear axle enabling additional seats to be included. To maintain the functionality of a conventional agricultural tractor, the cargo box tail gate and a portion of the cargo box floor can be raised to positions in which they both extend upwardly and forwardly toward the operator. In these positions, the three point hitch at the rear of the tractor is visible to the operator as is typically the case conventional agricultural tractors. The tail gate is mounted to the cargo box for rotation about multiple axes to pivot the tail gate to multiple open positions.
摘要翻译： 一种运输拖拉机，在后桥上方有一个货物箱，操作者的平台位于后桥的前方，可以增加额外的座位。 为了保持常规农用拖拉机的功能，货箱尾门和货箱底板的一部分可以升高到它们向上和向前朝着操作者向上延伸的位置。 在这些位置，拖拉机后部的三点悬挂对于操作者是可见的，如通常的农业拖拉机的情况。 尾门安装在货箱上以围绕多个轴线旋转，以将尾门枢转到多个打开位置。
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公开(公告)号：US3990520A
公开(公告)日：1976-11-09
申请号：US601660
申请日：1975-08-04
IPC分类号： A01B63/112
CPC分类号： A01B63/112
摘要： The lower draft link of a tractor three-point hitch includes a sensor to sense draft loads imposed on the draft link by an earth-working implement. Variations in the draft load cause variations in the pressure of the fluid in the sensor from a preselected pressure. A pilot-operated, load control valve is connected to the sensor and is shiftable in response to pressure above and below the preselected pressure to actuate a control mechanism. The control mechanism actuates a direction control valve for directing fluid to and from a hydraulic lift cylinder for respectively raising and lowering the draft link to adjust the implement so as to maintain the preselected pressure and thus maintain the desired draft load.
摘要翻译： 拖拉机三点牵引车的下部牵引连杆包括传感器，用于感测由地面作业工具施加在牵引连杆上的载荷。 牵引载荷的变化会导致传感器中的流体压力与预选压力的变化。 先导操作的负载控制阀连接到传感器，并且响应于高于和低于预选压力的压力而移动以致动控制机构。 控制机构致动一个方向控制阀，用于将流体引导到液压提升缸，用于分别升高和降低牵引连杆，以调节工具，以保持预选的压力，从而保持所需的牵伸载荷。
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公开(公告)号：US6138782A
公开(公告)日：2000-10-31
申请号：US257717
申请日：1999-02-25
申请人： Lawrence Vernon Anderson , John Wayne Schletzbaum , Ronald Lee Mayfield , Dennis Royal Yoder , Benjamin Michael Witte , Raymond Yifei Hou , Sanjay Ishvarlal Mistry
发明人： Lawrence Vernon Anderson , John Wayne Schletzbaum , Ronald Lee Mayfield , Dennis Royal Yoder , Benjamin Michael Witte , Raymond Yifei Hou , Sanjay Ishvarlal Mistry
CPC分类号： B62D11/183
摘要： A steering control system for a tracked vehicle includes an engine driven variable displacement steering pump which drives a hydraulic motor. A control system senses steering wheel position, vehicle speed, engine speed and forward/reverse vehicle direction. As a function of these sensed inputs, a control signal is generated and is used to control the swashplate angle of an engine-driven variable displacement pump which drives a steering motor which drives a differential track drive mechanism. The control system also determines a ratio of motor speed to vehicle speed and generates a powerboost signal when the ratio exceeds a threshold value. The powerboost signal is communicated to the engine controller which causes the engine to increase its power output. This modifies the engine fuel delivery curve based on the steering system power requirement and increases the power available for turning the vehicle.
摘要翻译： 用于跟踪车辆的转向控制系统包括驱动液压马达的发动机驱动的可变排量转向泵。 控制系统感测方向盘位置，车速，发动机转速和前进/后退车辆方向。 作为这些检测到的输入的函数，产生控制信号并且用于控制驱动驱动差速传动驱动机构的转向马达的发动机驱动的可变排量泵的斜盘角。 控制系统还确定电动机速度与车辆速度的比率，并且当比率超过阈值时产生电力信号。 发电机信号被传送到发动机控制器，该发动机控制器使发动机增加其功率输出。 这将根据转向系统的功率需求修改发动机燃油输送曲线，并增加转向车辆的可用功率。
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公开(公告)号：US06866286B2
公开(公告)日：2005-03-15
申请号：US10698645
申请日：2003-10-31
IPC分类号： B60D1/06 , A01B59/042 , B60D1/00
CPC分类号： A01B59/042
摘要： A tractor having a cargo box and an axle mounted hitch ball in which the hitch ball projects upward through an opening in the cargo box floor. This arrangement enables the ball to be used when the cargo box is mounted to the tractor. Furthermore, since the ball is mounted to the axle and not the cargo box, greater load carrying capacity is achieved and the hitch can be used when the box removed from the tractor.
摘要翻译： 拖拉机具有货箱和车轴搭接球，挂车球通过货箱底部的开口向上突出。 这种布置使得当货箱安装到拖拉机时可以使用球。 此外，由于球被安装到车轴而不是货箱，所以实现了更大的承载能力，并且当箱子从拖拉机移除时可以使用搭接。
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公开(公告)号：US06698786B2
公开(公告)日：2004-03-02
申请号：US10162854
申请日：2002-06-05
IPC分类号： B60D106
CPC分类号： A01B59/042
摘要： A tractor having a cargo box and an axle mounted hitch ball in which the hitch ball projects upward through an opening in the cargo box floor. This arrangement enables the ball to be used when the cargo box is mounted to the tractor.Furthermore, since the ball is mounted to the axle and not the cargo box, greater load carrying capacity is achieved and the hitch can be used when the box removed from the tractor.
摘要翻译： 拖拉机具有货箱和车轴搭接球，挂车球通过货箱底部的开口向上突出。 这种布置使得当货箱安装到拖拉机时可以使用球。此外，由于球被安装到车轴而不是货箱，因此实现了更大的承载能力，并且当箱被移除时可以使用搭接 从拖拉机。
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