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1.发明授权公开(公告)号：US06257119B1
公开(公告)日：2001-07-10
申请号：US09390128
申请日：1999-09-03
申请人： James D. Ryken , David D. Dirks , Doug Kardell , Wilhelm Göllner
发明人： James D. Ryken , David D. Dirks , Doug Kardell , Wilhelm Göllner
IPC分类号： F01B302
CPC分类号： F15B15/1447 , F04B1/328 , F15B9/12
摘要： A special ball joint for servo piston actuation in a bent axis unit includes an elongated actuator rod having a substantially spherical external surface on a first end and a servo piston on a second end. Also included is a single-piece yoke adapted to carry a cylinder block and rotate about an axis of rotation. A socket having a substantially spherical surface is interposed between the yoke and the spherical surface on the rod such that the actuator rod rotates the yoke with forces residing in at least two planes when hydraulic pressure is applied to the servo piston. Two servo pistons and two such ball joints can be applied to the yoke to obtain rotation of the yoke which is up to greater than plus or minus 45° from a neutral position. The external surface on the first end of the actuator rod and the socket must be mating so as to provide freedom of movement. The socket can be incorporated into the yoke itself. The foregoing servo pistons are received in servo bores of a one-piece control housing. An integral cam is formed in a control trunnion to accommodate the swinging movement of the yoke.
摘要翻译： 在弯曲轴单元中用于伺服活塞致动的特殊球形接头包括细长致动杆，其在第一端具有基本上球形的外表面，在第二端具有伺服活塞。 还包括一个适用于承载气缸体并围绕旋转轴线旋转的单件式轭架。 具有大致球形表面的插座插入在轭和杆之间的球形表面之间，使得当液压施加到伺服活塞时，致动器杆以驻留在至少两个平面内的力旋转轭。 可以将两个伺服活塞和两个这样的球接头施加到轭架上，以使得轭架从中立位置大于正或负45°的旋转。 执行器杆和插座的第一端上的外表面必须配合，以提供运动自由。 插座可以并入轭本身。 上述伺服活塞被接收在一体式控制壳体的伺服孔中。 整体凸轮形成在控制耳轴中以适应轭的摆动。
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公开(公告)号：US06260468B1
公开(公告)日：2001-07-17
申请号：US09390130
申请日：1999-09-03
申请人： James D. Ryken , David D. Dirks , Wilhelm Göllner , Doug Kardell
发明人： James D. Ryken , David D. Dirks , Wilhelm Göllner , Doug Kardell
IPC分类号： F01B302
CPC分类号： F04B1/328 , F04B1/324 , F15B9/12 , F15B15/1447
摘要： A variable displacement bent axis hydraulic unit includes a control mechanism having a control housing with a displacement feedback sleeve and spool connected by a spring. A computer controls a proportional solenoid fluid valve that is in operative fluid engagement with the end of the spool opposite its spring connection with the displacement feedback sleeve. The displacement feedback sleeve is urged by the spring into engagement with a cam member on the yoke of the bent axis unit.
摘要翻译： 可变排量弯曲轴液压单元包括具有控制壳体的控制机构，该控制壳体具有位移反馈套筒和通过弹簧连接的阀芯。 计算机控制比例电磁流体阀，该比例电磁流体阀与阀芯的端部处于与流体位移反馈套筒的弹簧连接相反的流体接合状态。 位移反馈套筒被弹簧推压成与弯曲轴单元的轭上的凸轮构件接合。
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3.发明授权Apparatus and method for determining the output speed of a hydrostatic unit in a hydro-mechanical transmission 有权用于确定水力机械传动装置中的静液压单元的输出速度的装置和方法公开(公告)号：US06485387B1
公开(公告)日：2002-11-26
申请号：US09669762
申请日：2000-09-26
IPC分类号： F16H4706
摘要： The output speed of a hydrostatic unit in a transmission is determined using a pair of variable reluctance sensors, one on a gear driven by the hydrostatic unit output and the other on the carrier of the planetary system. One of the two sensors will always be measuring a relatively high speed from which the hydro output is directly determined or indirectly determined using the current engine speed. Thus the frequency of the speed sensor used to determine the hydrostatic unit output speed is not decreased at slow hydrostatic unit output speeds.
摘要翻译： 变速箱中的静液压单元的输出速度是由一对可变磁阻传感器确定的，一对可变磁阻传感器，一个由静液压单元输出驱动的齿轮，另一个位于行星系统的载体上。 两个传感器中的一个将始终测量相对较高的速度，使用当前发动机转速直接确定或间接地确定水力输出。 因此，用于确定静液压单元输出速度的速度传感器的频率在慢静液压单元输出速度下不降低。
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公开(公告)号：US5784949A
公开(公告)日：1998-07-28
申请号：US882135
申请日：1997-06-25
CPC分类号： F01B3/0032 , F04B1/126 , F04B1/2092 , Y10T74/18336
摘要： An improved apparatus for retaining slipper holddown pins radially in a hydraulic unit includes a cylinder block having a plurality of holes therein for respectively receiving a corresponding plurality of elongated slipper holddown pins, each having a maximum transverse width. The holes are adjacent to and communicate with a center bore of the cylinder block to form respective throats. The throats have a maximum width that is less than the maximum transverse width of the pins such that the pins cannot be radially displaced through the respective throats. Each hole has a side wall that extends more than 180.degree. around its central axis. The side wall defines the throat between the hole and the center bore. The shaft can be inserted into driving engagement with the center bore of the cylinder block. The slipper holddown pin has a maximum transverse width greater than the maximum width of the throat. Thus, the pin is radially constrained in the hole without applying external forces and cannot move radially outwardly through the throat. The bore of the cylinder block and the holes for receiving the pins can be simultaneously formed with a single broaching bar.
摘要翻译： 用于在液压单元中径向保持拖鞋压紧销的改进的装置包括其中具有多个孔的气缸体，用于分别接收相应的多个细长拖鞋压紧销，每个具有最大横向宽度。 孔与气缸体的中心孔相邻并连通，形成相应的喉部。 喉部具有小于销的最大横向宽度的最大宽度，使得销不能通过相应的喉部径向移位。 每个孔具有围绕其中心轴线延伸超过180度的侧壁。 侧壁限定孔和中心孔之间的喉部。 轴可以插入与气缸体的中心孔的驱动接合。 拖鞋压紧销的最大横向宽度大于喉咙的最大宽度。 因此，销径向地限制在孔中而不施加外力，并且不能径向向外移动穿过喉部。 气缸体的孔和用于接收销的孔可以与单个拉杆同时形成。
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5.发明授权Means and method for varying margin pressure as a function of pump displacement in a pump with load sensing control 失效用于在具有负载感测控制的泵中改变作为泵位移的函数的裕度压力的方法和方法
公开(公告)号：US6033188A
公开(公告)日：2000-03-07
申请号：US32052
申请日：1998-02-27
CPC分类号： F04B49/08 , F04B2201/1203 , F04B2205/061 , F04B2205/09
摘要： A pump system includes a variable fluid displacement pump having a pressure line which is connected to a pressure load and connected to a load sensing control. A variable orifice is located downstream from the load sensing control. The variable orifice is fluidly connected to the load sensing control in a servo pressure conduit such that the margin pressure varies proportionally with respect to the fluid displacement Of the pump. The variable orifice can take many different forms, including a variable cross sectional area gap between the housing and an elongated servo piston longitudinally slidable therein. A longitudinal slot having uniformly increasing depth along the length of the servo piston gives the servo piston a cross sectional area which varies along its length. Thus, a variable orifice results.
摘要翻译： 泵系统包括可变流体排量泵，其具有连接到压力负载并连接到负载感测控制的压力线。 可变孔口位于负载感测控制器的下游。 可变孔口在伺服压力管道中流体地连接到负载感测控制器，使得边缘压力相对于泵的流体位移成比例地变化。 可变孔可以采取许多不同的形式，包括壳体与可在其中纵向滑动的细长伺服活塞之间的可变横截面积间隙。 沿着伺服活塞的长度具有均匀增加的深度的纵向槽给予伺服活塞沿其长度变化的横截面积。 因此，产生可变孔口。
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