公开(公告)号：US06490861B2

公开(公告)日：2002-12-10

申请号：US09813559

申请日：2001-03-21

申请人： Massimo Biggi ,  Angelo Gregorio ,  Enrico Sedoni

发明人： Massimo Biggi ,  Angelo Gregorio ,  Enrico Sedoni

IPC分类号： F16D3102

CPC分类号： B62D5/093

摘要： A hydraulic steering system for a tractor is provided which can be operated in a conventional steering mode or in a fast steering mode. In conventional steering mode, a conventional steering wheel and steering motor direct pressurized oil to the steerable wheels for selecting the turning direction, the turning angle, and the speed with which the turning angle is achieved. In fast steering mode, a fast-turning valve is controlled by the operator to direct oil directly to the steerable wheels, thereby by-passing the steering motor. The conventional steering wheel and steering motor continue however to control the steering operation.

摘要翻译： 提供了一种用于拖拉机的液压转向系统，其可以以常规转向模式或快速转向模式操作。 在常规转向模式中，传统的方向盘和转向马达将加压油直接转向可转向轮，用于选择转向角度，转向角度和达到转弯角度的转速。 在快速转向模式中，快速转向阀由操作者控制，以将油直接引导到可转向轮，从而旁路转向马达。 然而，传统的方向盘和转向马达仍然继续控制转向操作。

公开(公告)号：US4601346A

公开(公告)日：1986-07-22

申请号：US650616

申请日：1984-09-13

申请人： Angelo Gregorio

发明人： Angelo Gregorio

IPC分类号： A01B63/102 ,  A01B63/111 ,  A01B63/112

CPC分类号： A01B63/102 ,  A01B63/1117

摘要： A unit for raising and lowering an agricultural implement, which unit is connected to a tractor. The unit includes an attachment device (6) for attaching the implement to the tractor, a raising and lowering device (2, 5) for raising and lowering the implement, and a control and regulation device including a linkage and regulation device including a linkage system and an operating lever (27) disposed between the attachment device (6) and the raising and lowering device (2, 5). The unit further includes a flexure bar (7) and is controlled by two control levers (36 and 38) which act on the operating lever (27) to determine the furrow depth and maximum force acceptable by the bar (7).The principal characteristic of the present invention lies in the fact that it includes a leverage mechanism (61 or 83) which is operable to act on the operating lever (27) for causing the operation of the raising and lowering device (2, 5) and the implement independently of the position of the control levers (36, 38) and independently of the deflection of the flexure bar (7). The leverage mechanism can cause complete raising of the implement and is operable to lower the implement back to the initial position set for the implement by the control levers.

摘要翻译： 用于升降农具的单元，该单元与拖拉机连接。 该单元包括用于将工具附接到拖拉机的附接装置（6），用于升高和降低工具的升降装置（2,5），以及包括联动和调节装置的控制和调节装置，所述联动和调节装置包括联动系统 以及设置在所述附接装置（6）和所述升降装置（2,5）之间的操作杆（27）。 该单元还包括挠曲杆（7），并且由作用在操作杆（27）上的两个控制杆（36和38）控制，以确定槽（7）可接受的沟槽深度和最大力。 本发明的主要特征在于其包括杠杆机构（61或83），该杠杆机构（61或83）可操作以作用于操作杆（27），用于使升降装置（2,5）和 该装置独立于控制杆（36,38）的位置，并且独立于挠曲杆（7）的偏转。 杠杆机制可以引起工具的完全升高，并且可操作地将工具降回到由控制杆设置的用于工具的初始位置。

公开(公告)号：US5816359A

公开(公告)日：1998-10-06

申请号：US666731

申请日：1996-06-18

申请人： Angelo Gregorio ,  Claudio Baldrati

发明人： Angelo Gregorio ,  Claudio Baldrati

IPC分类号： B62D5/08 ,  B62D5/087

CPC分类号： B62D5/08

摘要： A control valve is provided for use in a hydraulic steering system of an agricultural vehicle of the type having a steering valve of the reactive type for controlling the supply of hydraulic fluid to hydraulic cylinders having opposed working chambers serving to move the steerable vehicle wheels in opposite directions. The control valve is connectable between the steering valve and the hydraulic cylinders and has a first setting in which fluid flow in both directions between the steering valve and the working chambers of the hydraulic steering cylinders is possible at all times and a second setting in which return flow of hydraulic fluid from any one working chamber of the hydraulic cylinders to the steering valve is only possible when a positive pressure is present at the outlet of the steering valve connected by the control valve to the opposed working chamber of the hydraulic cylinders.

摘要翻译： 提供一种用于农用车辆的液压转向系统的控制阀，该液压转向系统具有用于控制将液压油供应​​到具有相对工作室的液压缸的反作用型转向阀的类型的农用车辆，用于使可转向车轮相对移动 方向。 控制阀可在转向阀和液压缸之间连接，并且具有第一设置，其中在所有转向阀和液压转向缸的工作室之间的两个方向上的流体流可以在任何时候都可以进行，在第二设定中返回 只有当液压缸从液压缸的任何一个工作室到转向阀的液压流体的流动仅在通过控制阀连接到转向阀的出口处的正压力存在于液压缸的相对的工作室时才可能。

公开(公告)号：US4260025A

公开(公告)日：1981-04-07

申请号：US46277

申请日：1979-06-07

申请人： Angelo Gregorio

发明人： Angelo Gregorio

IPC分类号： A01B63/00 ,  A01B63/10 ,  A01B63/112

CPC分类号： A01B63/112

摘要： A device for lifting an implement carried by an agricultural tractor three-point linkage has a flexible bar connected at its ends to the said lower linkage arms for rotation about a transverse axis, the reaction forces transmitted from the ground to the implement, when the latter is lowered into the ground, causing flexural deformation of the bar in a horizontal plane to effect operation of a distributor control shaft through a linkage which includes a first lever fixed at one end to the center of the bar, and acting through an inclined slot and pin on a second lever so that the weight of the implement when lifted from the ground causes the linkage arms to rotate about their connections to the respective tie-rods, deforming the flexible bar in a vertical plane and causing rotation of the distributor control shaft in a sense to return the implement rapidly to the ground.

摘要翻译： 用于提升由农用拖拉机三点连杆机构携带的工具的装置具有在其端部处连接到所述下连杆臂的柔性杆，用于围绕横向轴线转动，即当后者从地面传递到工具时的反作用力 下降到地面中，导致杆在水平面中的弯曲变形，以通过连杆实现分配器控制轴的操作，该联动装置包括固定在杆的中心的一端的第一杆，并且通过倾斜槽 销钉在第二杠杆上，使得当从地面抬起时，工具的重量使得连杆臂围绕它们与相应的拉杆的连接旋转，使得柔性杆在垂直平面中变形并使分配器控制轴在 将工具快速返回地面的感觉。