-
公开(公告)号：US5515768A
公开(公告)日：1996-05-14
申请号：US396302
申请日：1995-02-28
CPC分类号： F16C19/502 , F01B3/0032 , F04B1/126 , F16C33/306
摘要： An axial piston hydraulic device includes a holddown device for maintaining the slippers swivably connected to pistons in sliding contacting with a cam surface of a swashplate. The holddown device also includes a nested wave spring disposed to resiliently urge a holddown sleeve away from a cylinder barrel for biasing a holddown plate engaging the slippers toward the cam surface.
摘要翻译： 一种轴向活塞液压装置包括一个压紧装置，用于将滑动件可旋转地连接到活塞上，与斜盘的凸轮表面滑动接触。 压紧装置还包括嵌套波形弹簧，其布置成弹性地推动压紧套筒远离气缸筒，用于将接合拖鞋的压板偏压到凸轮表面。
-
公开(公告)号：US5390584A
公开(公告)日：1995-02-21
申请号：US140952
申请日：1993-10-25
申请人： Wayne E. Fritz , Thomas A. Watts
发明人： Wayne E. Fritz , Thomas A. Watts
CPC分类号： F16C19/502 , F01B3/0073 , F01B3/106 , F04B1/2085 , F16C33/306 , F16C33/46
摘要： A follow up mechanism for maintaining a timed positional relationship between a bearing cage of an arcuate roller bearing assembly and a swashplate supported by the bearing assembly includes a flexural elastic link pivotally connected to the bearing cage and having first and second ends slidably disposed within a first bore in a pump housing and a second bore in the swashplate, respectively. The bores are in axial alignment with each other when the swashplate is in the equivalent of its centered position thereby allowing blind assembly of the follow up mechanism thereby eliminating the need for an access opening in the side of the pump housing and the associated cover, gasket and bolts.
摘要翻译： 用于维持弓形滚子轴承组件的轴承保持架和由轴承组件支撑的斜盘之间的定时位置关系的跟随机构包括枢转地连接到轴承保持架的弯曲弹性连杆，并且具有可滑动地设置在第一 分别位于泵壳体中并且在斜盘中的第二孔。 当斜盘相当于其中心位置时，钻孔彼此轴向对准，从而允许后续机构的盲组合，从而消除了在泵壳体侧面和相关联的盖子垫圈上的进入开口的需要 和螺栓。
-
公开(公告)号：US5554007A
公开(公告)日：1996-09-10
申请号：US324199
申请日：1994-10-17
申请人： Thomas A. Watts
发明人： Thomas A. Watts
CPC分类号： F04B1/324 , F04B2201/1201 , F04B2201/12041 , F04B2205/05
摘要： A variable displacement axial piston hydraulic unit includes first and second control pockets individually disposed between first and second arcuate shaped fluid passages, a first electrohydraulic valve for controlling fluid flow between the first control pocket and the first fluid passage and a second electrohydraulic valve for controlling fluid flow between the second passage and the second control pocket. A controller outputs first and second control signals to the first and second electrohydraulic valves in response to receiving a command signal so that the tilt angle of a swashplate is controlled to obtain a desired operating parameter. An angle detector, a pressure detector, and a speed detector provide feedback signals to the controller for determining when the desired operating parameter has been obtained.
摘要翻译： 可变位移轴向柱塞液压单元包括分别设置在第一和第二弧形流体通道之间的第一和第二控制腔，用于控制第一控制腔和第一流体通道之间的流体流动的第一电动液压阀和用于控制流体的第二电动液压阀 在第二通道和第二控制口袋之间流动。 响应于接收到命令信号，控制器将第一和第二控制信号输出到第一和第二电液阀，从而控制斜盘的倾斜角以获得期望的操作参数。 角度检测器，压力检测器和速度检测器向控制器提供反馈信号，以确定何时已获得期望的操作参数。
-
公开(公告)号：US5118079A
公开(公告)日：1992-06-02
申请号：US729357
申请日：1991-07-12
申请人： Thomas A. Watts
发明人： Thomas A. Watts
IPC分类号： F16K7/20 , F16L55/128 , F16L55/132
CPC分类号： F16L55/128 , F16K7/20 , F16L55/132
摘要： A removable fluid seal has a first deforming pin seated on a dead end of a fluid passage and a second deforming pin positioned in the opposite end of the fluid passage, with a spherical elastomeric member positioned between the first and the second deforiming pins. A threaded plug is axially advanced through the fluid passage to force the deforming pins towards each other and resiliently distort the elastomeric member into a deformed state in which an outer surface of the sphere is forced into sealing engagement with the sidewall of the fluid chamber.
摘要翻译： 可拆卸的流体密封件具有位于流体通道的死端上的第一变形销和位于流体通道的相对端中的第二变形销，其中球形弹性体构件位于第一和第二除油销之间。 螺纹塞轴向前进通过流体通道，以迫使变形销朝向彼此，并弹性地将弹性体构件变形为变形状态，其中球体的外表面被迫与流体室的侧壁密封接合。
-
公开(公告)号：US5593285A
公开(公告)日：1997-01-14
申请号：US372623
申请日：1995-01-13
申请人： Thomas A. Watts
发明人： Thomas A. Watts
IPC分类号： F04B1/20
CPC分类号： F04B1/2042 , F04B1/2021
摘要： An axial piston hydraulic unit has a valve plate assembly positioned between a head and a rotatable cylinder barrel. The assembly includes a pair of valve plates stacked together to function as a single valve plate. The valve plate assembly defines a restricted flow path for providing initial communication between an approaching piston bore of the rotatable barrel and an intake port and a discharge port extending through the pair of plates. A first portion of the flow path is defined in the valve plate adjoining the head and a second portion of the flow path is defined in the valve plate adjacent the barrel. The stacked valve plates are hydraulically held together by a pair of pressure balancing devices.
摘要翻译： 轴向活塞液压单元具有位于头部和可旋转气缸筒之间的阀板组件。 组件包括一对堆叠在一起用作单个阀板的阀板。 阀板组件限定了限制流动路径，用于在可旋转筒的接近活塞孔与进气口和延伸穿过该对板的排出口之间提供初始连通。 流动路径的第一部分限定在邻近头部的阀板中，并且流动路径的第二部分被限定在邻近筒的阀板中。 层叠的阀板通过一对压力平衡装置液压地保持在一起。
-
公开(公告)号：US4620475A
公开(公告)日：1986-11-04
申请号：US779389
申请日：1985-09-23
申请人： Thomas A. Watts
发明人： Thomas A. Watts
CPC分类号： F01B3/0047 , F01B3/0076 , Y10T29/49236
摘要： A hydraulic displacement unit of the axial piston fixed displacement type having a rotatable cylinder block with axially reciprocal pistons, each of which has a slipper associated with a swash surface, as defined by a thrust plate, and structure for obtaining fixed maximum clearance between the slippers and the thrust plate. This fixed maximum clearance is achieved by the use of the controlled positioning of a slipper retainer bearing relative to the surface of the thrust plate by use of a tubular member positioned within the cavity of the unit housing which is securely located and positioned by assembly of an end cap to the housing to be located between the thrust plate and the end cap. The tubular member has a series of windows at the thrust plate end thereof for receiving outwardly-extending peripheral tabs on the slipper retainer bearing to control the distance of the slipper retainer bearing from the thrust plate and with the thickness of the slipper retainer bearing, a slipper retainer, and slipper feet determining the fixed maximum clearance. The tubular member is constructed with permanently deformable fingers to take up manufacturing tolerances between components upon assembly of the unit and has provision for optional mounting of different types of spring structures acting on the slippers for urging the slippers toward the thrust plate and resisting tipping thereof.
摘要翻译： 轴向活塞固定位移型的液压位移单元具有可旋转的气缸体，其具有轴向往复活塞，每个活塞具有与止推板所限定的斜盘相关联的拖鞋，以及用于在拖鞋之间获得固定的最大间隙的结构 和推力板。 通过使用位于单元壳体的空腔内的管状构件，通过使用相对于推力板的表面的滑动件保持器轴承的受控定位来实现该固定的最大间隙，该管状构件通过组装 端盖到壳体以位于推力板和端盖之间。 管状构件在其推力板端部具有一系列窗口，用于在拖鞋保持器轴承上接收向外延伸的周向突出部，以控制拖鞋固定器轴承与止推板的距离以及拖鞋固定器轴承的厚度， 拖鞋固定器和滑脚确定固定的最大间隙。 管状构件具有永久变形的指状物，以在组件装配时占据部件之间的制造公差，并且提供用于可选地安装作用在拖鞋上的不同类型的弹簧结构，用于将拖鞋推向止推板并抵抗其倾倒。
-
公开(公告)号：US6113359A
公开(公告)日：2000-09-05
申请号：US338479
申请日：1999-06-22
申请人： Thomas A. Watts , John B. Thompson
发明人： Thomas A. Watts , John B. Thompson
CPC分类号： F04B1/2042
摘要： A hydraulic unit including a housing (10,11,13) within which is disposed a rotating cylinder barrel (25) driven by an input shaft (21). The housing means includes an end cap (13) disposed adjacent the end (45) of the cylinder barrel, with a valve plate (39) being disposed intermediate the of the barrel and an interior surface (65) of the end cap (13). The end cap defines a kidney port (59), a high pressure port (63), and a passage (61) interconnecting the kidney port and the high pressure port. In a configuration of the end cap which makes the pump compact, high pressure in the passage can cause deformation of a portion (69) of the end cap. To accommodate such deformation, the valve plate (39) is provided with a relieved area (71) disposed immediately adjacent the deformation portion (69). As a result, such that the deformation doesn't cause any deflection of the valve plate, and therefore, doesn't squeeze out the fluid layer between the valve plate valve surface (43) and the end (45) of the cylinder barrel (25).
摘要翻译： 一种包括壳体（10,11,13）的液压单元，其中设置有由输入轴（21）驱动的旋转气缸筒（25）。 壳体装置包括邻近气缸筒的端部（45）设置的端盖（13），其中位于筒体中间的阀板（39）和端盖（13）的内表面（65） 。 端盖限定肾口（59），高压口（63）以及将肾口与高压口相连的通道（61）。 在使泵紧凑的端盖的构造中，通道中的高压可导致端盖的一部分（69）的变形。 为了适应这种变形，阀板（39）设置有紧邻变形部分（69）设置的释放区域（71）。 结果，使得变形不会引起阀板的任何偏转，因此不会挤出阀板阀表面（43）和气缸筒的端部（45）之间的流体层（ 25）。
-
公开(公告)号：US5193584A
公开(公告)日：1993-03-16
申请号：US839358
申请日：1992-02-20
申请人： Thomas A. Watts
发明人： Thomas A. Watts
CPC分类号： F16K11/0708 , F16K3/34 , Y10T137/86734 , Y10T137/86759
摘要： A spool valve has a valve body with an elongated cylindrical bore therein. Fluid passageways extend in a radial direction through the valve body and communicate with the interior bore. A peripheral port edge is defined by the intersection of the bore and the passages. A cylindrical valve spool is slidably mounted in the bore to close and open the passageways with respect to the bore. The valve spool has a cylindrical outer surface and at least one planar circular surface with a peripheral metering edge therebetween. The peripheral metering edge has a plurality of tapered notches therein which are adapted at times to overlap the peripheral port edge to permit fluid flow between the bore and the passages. The method of this invention involves creating the notches in the valve spool by positioning a knurling tool at an angle with respect to the peripheral metering edge of the spool, rotating the knurling tool with respect to the spool to permit the spaced longitudinal V-shaped projections of the knurling tool to impress in the spool the desired tapered notches.
摘要翻译： 滑阀具有其中具有细长圆柱形孔的阀体。 流体通道沿径向延伸穿过阀体并与内孔连通。 外围端口边缘由孔和通道的交点定义。 圆柱形阀芯可滑动地安装在孔中以关闭并打开相对于孔的通道。 阀芯具有圆柱形外表面和至少一个平面圆形表面，其间具有周边计量边缘。 周边计量边缘在其中具有多个锥形凹口，其有时与外围端口边缘重叠以允许流体在孔和通道之间流动。 本发明的方法涉及通过将滚花工具相对于线轴的周边计量边缘定位成一定角度，使滚花工具相对于线轴旋转，从而在阀芯中形成切口，以允许间隔开的纵向V形突起 的滚花工具以在卷轴中压印所需的锥形凹口。
-
-
-
-
-
-
-
搜索结果
8 条记录 (耗时 0.043 秒)
