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公开(公告)号：US5279205A
公开(公告)日：1994-01-18
申请号：US990969
申请日：1992-12-15
CPC分类号： F01B3/0032
摘要： Axial piston fluid translating units commonly experience undesirable shaft deflections and barrel tilting during operation. A fluid translating unit includes a barrel plate interposed the end of a barrel and a porting surface defined within a housing thereof. The barrel plate is axially spaced from an end of the barrel and is in face sealing engagement with the porting surface. The barrel plate defines a plurality of fluid ports, each communicating between one of a plurality of barrel cylinder bores and the porting surface. In one aspect a plurality of counterbores are provided in the barrel in surrounding relation to the fluid ports. A plurality of seal rings having a sealing end defining an annular seal face of a predetermined width for face sealing engagement with the barrel plate. The seal rings are each disposed in one of the counterbores in circumferential sealing relation of a predetermined length which is no greater than the width of the sealing face. A plurality of annular springs are disposed in the counterbores for urging the seal rings into sealing engagement with the other of the barrel and the barrel plate. This arrangement permits tilting of the barrel without damaging contact or excessive leakage between the barrel plate and the porting surface.
摘要翻译： 轴向活塞流体平移单元通常在操作期间经历不期望的轴偏转和筒倾斜。 流体转换单元包括插入桶的端部的筒板和限定在其壳体内的移动表面。 筒板与筒的端部轴向间隔开并且与端口表面密封接合。 桶板限定了多个流体端口，每个流体端口在多个桶形缸孔中的一个和移动表面之间连通。 在一个方面，多个沉孔围绕流体端口设置在筒中。 多个密封环具有密封端，该密封端限定具有预定宽度的环形密封面，用于与筒板的表面密封接合。 密封环分别以不大于密封面的宽度的预定长度的周向密封关系设置在一个沉孔中。 多个环形弹簧设置在沉孔中，用于推动密封环与桶和桶板中的另一个密封接合。 这种布置允许筒的倾斜而不会在筒板和移动表面之间的接触不良或过度的泄漏。
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2.发明授权Method of manufacturing a piston for an axial piston fluid translating device 失效制造用于轴向活塞流体平移装置的活塞的方法
公开(公告)号：US5265331A
公开(公告)日：1993-11-30
申请号：US822003
申请日：1992-01-16
CPC分类号： F04B1/124 , B23P15/10 , F05C2253/12 , Y10T29/49249 , Y10T29/49256
摘要： Hydraulic piston pumps and motors are used in various applications to power implements, steering, propel, and auxiliary systems. However, it is important to keep the piston weight and compressible fluid volume low in order to have a smaller more efficient pump. The subject piston is manufactured in a simple manner to achieve a reliable, light weight design. The piston has a cylindrical body having an outer surface. The piston is manufactured by forming a first bore having a large diameter in the body extending from the outer surface and terminating at an annular shoulder. A second bore is formed which extends from the annular shoulder to a predetermined depth. A tube is inserted through the bore and extends a predetermined distance into the second bore. A cap has a bore and is positioned on the body in abutment with at least a portion of the outer surface. The cap slidably receives the tube through the bore. The cap is brazed to the body and the tube is brazed to the cap and to the body to form an isolated annular cavity in the piston.
摘要翻译： 液压活塞泵和电机用于各种应用中，用于电动工具，转向，推进和辅助系统。 然而，重要的是将活塞重量和可压缩流体体积保持在较低水平，以便具有更小效率的泵。 主体活塞以简单的方式制造，以实现可靠，重量轻的设计。 活塞具有具有外表面的圆柱体。 活塞通过在主体中形成具有大直径的第一孔而从外表面延伸并终止于环形肩部。 形成从环形肩部延伸到预定深度的第二孔。 管穿过孔插入并延伸预定距离进入第二孔。 盖具有孔并且定位在与外表面的至少一部分邻接的主体上。 盖可滑动地接收通过孔的管。 盖被钎焊到主体上，并且管被钎焊到盖子和主体上，以在活塞中形成隔离的环形空腔。
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公开(公告)号：US4064790A
公开(公告)日：1977-12-27
申请号：US621929
申请日：1975-10-14
CPC分类号： F04B1/0456 , F01B1/0644 , F01B1/0655 , F01B13/063
摘要： A radial piston pump comprises a housing having a drive shaft rotatably mounted therein and a pair of longitudinally spaced pumps each having a rotor thereof operatively connected to the shaft for rotation therewith. Each pump further comprises a pintle valve mounted in the housing and having a respective rotor rotatably mounted thereon for communicating fluid from an inlet of the housing to an outlet thereof. Each pump further comprises a plurality of circumferentially spaced and radially extending pistons secured thereon with each of the pistons having a cylinder reciprocally mounted on an end thereof for pumping fluid from the inlet to the outlet upon rotation of the rotor which is mounted in eccentric relationship relative to a chamber formed in the housing.
摘要翻译： 径向柱塞泵包括具有可旋转地安装在其中的驱动轴的壳体和一对纵向间隔开的泵，每个泵具有可操作地连接到轴的转子，用于与其一起旋转。 每个泵还包括安装在壳体中并具有可旋转地安装在其上的相应转子的枢轴阀，用于将流体从壳体的入口连通到其出口。 每个泵还包括固定在其上的多个周向间隔开且径向延伸的活塞，其中每个活塞具有往复安装在其端部上的气缸，用于在转子旋转时将流体从入口泵送到出口，该转子以偏心关系相对安装 到形成在壳体中的室。
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