公开(公告)号：US5038634A

公开(公告)日：1991-08-13

申请号：US312551

申请日：1989-02-17

申请人： Takushi Matsuto ,  Tsutomu Hayashi ,  Yoshihiro Nakajima ,  Atsuo Hojo

发明人： Takushi Matsuto ,  Tsutomu Hayashi ,  Yoshihiro Nakajima ,  Atsuo Hojo

IPC分类号： F16H47/02 ,  B60K17/00 ,  B60K17/10 ,  B62M19/00 ,  F16H39/14

CPC分类号： F16H61/425 ,  B60K17/10 ,  B62M19/00 ,  F16H39/14 ,  F16H61/42 ,  Y10T74/19149

摘要： A power transmission system comprises a hydrostatic continuously variable transmission constituted by integrally and coaxially coupling a pump cylinder of a swashplate type hydraulic pump with a motor cylinder of a swashplate type hydraulic motor. The transmission is rotatably supported at its opposite ends on a bearing. A first transmission device connected to an engine is connected to an input member of the pump from one side of the transmission, and a second transmission device connected to a load member is connected to an output member of the pump on the radially opposite side of the transmission. The first and second transmission devices are disposed adjacent each other near one end of the continuously variable transmission. This permits the points of action of loads on the input and output members from the first and second transmission devices to be placed in close vicinity to each other, thereby reducing the swinging moment and the flexing moment acting on the transmission due to these loads.

摘要翻译： 动力传动系统包括一个静液压无级变速器，它由旋转斜盘式液压泵的泵缸与旋转斜盘式液压马达的电机缸体整体地同轴联接。 变速器在其相对端可旋转地支撑在轴承上。 连接到发动机的第一传动装置从变速器的一侧连接到泵的输入构件，并且连接到负载构件的第二传动装置连接到泵的输出构件，在泵的径向相对侧 传输。 第一和第二传动装置在无级变速器的一端附近相邻设置。 这允许来自第一和第二传动装置的输入和输出构件上的载荷的作用点彼此靠近地放置，从而减少由于这些载荷而作用在变速器上的摆动力矩和弯曲力矩。

公开(公告)号：US4939900A

公开(公告)日：1990-07-10

申请号：US122891

申请日：1987-11-19

申请人： Mitsumasa Furumoto ,  Eiichiro Kawahara ,  Kenichi Ikejiri ,  Noboru Yamamoto

发明人： Mitsumasa Furumoto ,  Eiichiro Kawahara ,  Kenichi Ikejiri ,  Noboru Yamamoto

IPC分类号： F16H39/14 ,  F16H61/40 ,  F16H61/4104 ,  F16H61/4139 ,  F16H61/4165

CPC分类号： F16H61/4104 ,  F16H39/14 ,  F16H47/02

摘要： A hydraulic motor and a hydraulic pump are interconnected by a closed hydraulic circuit. A lubricating chamber is defined around the sliding surfaces of the swash plate and the plungers of at least one of the hydraulic pump and the hydraulic motor. A shuttle valve has two input ports connected to respective oil passages, the shuttle valve being shiftable to connect the one of the oil passages which is of lower oil pressure to the output port of the shuttle valve when the differential pressure between the oil passages is relatively large. A first relief valve is opened to communicate the output port to the lubricating chamber when the oil pressure in the output port exceeds a first pressure level. A second relief valve connected between the first relief valve and the lubricating chamber is opened when the oil pressure between the first relief valve and the lubricating chamber exceeds a second pressure level lower than the first pressure level.

公开(公告)号：US4936095A

公开(公告)日：1990-06-26

申请号：US264290

申请日：1988-10-28

申请人： William A. Ross ,  Randal E. Arlt

发明人： William A. Ross ,  Randal E. Arlt

IPC分类号： F16H39/14 ,  F16H61/40 ,  F16H61/4017 ,  F16H61/4157 ,  F16H61/42 ,  F16H61/433

CPC分类号： F16H61/4157 ,  F16H39/14 ,  F16H61/40 ,  F16H61/4017 ,  F16H61/42 ,  F16H61/433 ,  F16H2059/6853

摘要： An improved closed-loop hydrostatic transmission system is provided of the type including a pump (11), a motor (13), and a pair of conduits (15 and 17). The system includes a main control valve (43) and a charge pump (23) which is the sole source of make-up fluid to the closed-loop system and the sole source of control fluid for varying the pump. The system includes a power limiting means comprising first and second pressure relief valve means (75 and 77) operable to provide fluid communication from whichever side of the closed-loop is at high pressure to the system reservoir whenever system pressure exceeds the predetermined maximum pressure. The motor is adapted to transmit drive torque to a reversible load (37) of the type having a known inertia and a predeterminable time of deceleration from maximum speed operation in one direction to a standstill condition. A flow restriction means (44) in series relationship between the charge pump and a fluid pressure responsive means (31,33) of the pump is selected such that reversal of the main control valve ( 43) from maximum displacement in one direction to maximum displacement in the opposite direction results in destroking of the pump in a time period approximately equal to the time of deceleration of the reversible load, thereby substantially preventing cavitation and high-pressure spikes.

公开(公告)号：US4916900A

公开(公告)日：1990-04-17

申请号：US132414

申请日：1987-12-14

申请人： Takashi Iino ,  Tsuneaki Seino ,  Eiichiro Kawahara

发明人： Takashi Iino ,  Tsuneaki Seino ,  Eiichiro Kawahara

IPC分类号： F16H39/14 ,  F16H61/40 ,  F16H61/4061

CPC分类号： F16H61/4157 ,  F16H39/14 ,  F16H61/40

摘要： A hydraulically operated continuously variable transmission for an automobile includes a hydraulic pump coupled to an input shaft and having an outlet port, a hydraulic motor coupled to an output shaft, at least one of the hydraulic pump and the hydraulic motor being of the variable-displacement type, a closed hydraulic circuit interconnecting the hydraulic pump and the hydraulic motor, and a device for selectively making and breaking the hydraulic circuit respectively by opening and closing the outlet port. The device comprises a valve body for closing the outlet port, a valve holder for driving the valve body to selectively open and close the outlet port, and a spring for normally urging the valve body in a direction to close the outlet port, the valve body and the valve holder being held in engagement with each other for relative displacement in directions to open and close the outlet port.

公开(公告)号：US4838024A

公开(公告)日：1989-06-13

申请号：US122775

申请日：1987-11-19

申请人： Noboru Yamamoto ,  Mitsumasa Furumoto ,  Eiichiro Kawahara ,  Kenichi Ikehjiri

发明人： Noboru Yamamoto ,  Mitsumasa Furumoto ,  Eiichiro Kawahara ,  Kenichi Ikehjiri

IPC分类号： F16H39/14

CPC分类号： F16H39/14 ,  F16H61/4139 ,  F16H61/4165

摘要： A hydraulic motor and a hydraulic pump are interconnected by a closed hydraulic circuit. A lubricating chamber is defined around the sliding surfaces of the swash plate and the plungers of at least one of the hydraulic pump and the hydraulic motor. A hydraulically hermetic chamber is defined in surrounding relations to at least one of the hydraulic pump and the hydraulic motor. The hydraulically hermetic chamber is connected to a replenshing pump by a relief valve which is openable at a pressure level. A pressure control valve is disposed in a discharge passageway of the hydraulically hermetic chamber and openable at a first pressure level lower than the pressure level for the relief valve. In another embodiment, a second pressure control valve is connected to a junction between the first pressure control valve and the lubricating chamber and openable at a second pressure level lower than the second pressure level.

公开(公告)号：US4669267A

公开(公告)日：1987-06-02

申请号：US863337

申请日：1986-05-15

申请人： David Greenhow

发明人： David Greenhow

IPC分类号： F16D31/02 ,  F16H39/14 ,  F16D39/00

CPC分类号： F16H39/14 ,  F16D31/02

摘要： A hydrostatic hydraulic transmission has a casing which is connected to rotate together with an output shaft, and also has an input shaft. A pump includes a cylinder block, pistons reciprocable in the block, a valve plate, a swash plate and a yoke for the swash plate, the swash plate, the yoke and a valve plate being constrained to rotate together with the casing. The cylinder block is constrained to rotate with the input shaft. A motor has a cylinder block, pistons reciprocable in the block, a valve plate, a swash plate and a yoke for the swash plate, the swash plate, the yoke of the motor and the valve plate of the motor being constrained to rotate with the casing, the cylinder block of the motor being connected to a stator.

摘要翻译： 静液压变速器具有与输出轴一起旋转连接的壳体，并且还具有输入轴。 泵包括气缸体，在块体中往复运动的活塞，用于斜盘的阀板，斜板和轭，旋转斜盘，轭和阀板被限制为与壳体一起旋转。 气缸体被限制为与输入轴一起旋转。 电动机具有气缸体，可在块体中往复运动的活塞，用于旋转斜盘的阀板，斜板和轭，旋转斜盘，电动机的轭和电动机的阀板被限制为随着 电机的气缸体与定子连接。

公开(公告)号：US4616478A

公开(公告)日：1986-10-14

申请号：US643261

申请日：1984-08-21

申请人： Falle Jensen

发明人： Falle Jensen

IPC分类号： F16H39/14 ,  F16D39/00

CPC分类号： F16H39/14 ,  Y10T74/2186

摘要： A rotatable hydrostatic transmission is formed by a hydraulic pump and a hydraulic motor which are coupled coaxially together. The pump and motor both have housing members and shaft members which are independently rotatable relative to a mounting structure. One member of the pump is rigidly coupled to one member of the motor, and the coupled members rotate together as a unit. The other member of the pump is an input and the other member of the motor which is not rigidly coupled is the output member. Reduction gearing is provided between the coupled members and the output member. A fluid flow control means provides an infinitely adjustable control of fluid through the pump and the motor and allows the speed of rotation of the driven output member to be varied in infinitely adjustable fashion. A direct drive can be achieved by disengaging the reduction gearing so that the shafts and housings of both the pump and motor will all turn at the same speed as if they were one single unit. A reverse rotation of the driven output member can be achieved by reversing fluid flow while preventing the rigidly coupled members from rotating.

摘要翻译： 可旋转的静液压传动装置由同轴联接在一起的液压泵和液压马达形成。 泵和马达都具有可相对于安装结构独立旋转的壳体构件和轴构件。 泵的一个构件刚性地联接到电动机的一个构件，并且联接构件作为一个单元一起旋转。 泵的另一个构件是输入，并且不刚性联接的马达的另一个构件是输出构件。 在耦合构件和输出构件之间设置减速齿轮。 流体流量控制装置提供通过泵和马达的流体的无限可调控制，并允许驱动输出构件的旋转速度以无限可调的方式变化。 可以通过松开减速齿轮来实现直接驱动，使得泵和电动机的轴和壳体全部以与单个单元相同的速度转动。 可以通过在防止刚性联接构件旋转的同时反转流体流动来实现从动输出构件的反向旋转。

公开(公告)号：US4605358A

公开(公告)日：1986-08-12

申请号：US685909

申请日：1984-12-24

申请人： Wesley A. Burandt

发明人： Wesley A. Burandt

IPC分类号： B64C13/42 ,  F16H47/02 ,  F16H47/04 ,  F04B35/00 ,  F16H39/14 ,  F16H39/00

CPC分类号： F16H47/04 ,  B64C13/42 ,  F16H47/02 ,  F16H2037/088 ,  F16H3/72 ,  Y02T50/44

摘要： In many aircraft, there are flight control surfaces positioned by mechanical actuation systems that are driven by hydraulic power drive units. There are also devices for transmitting hydraulic power from one aircraft hydraulic system to another in the event that one of the system's pumps fails. An integration of structure to perform both of these functions in a single unit would result in a reduction in cost and weight as well as increased reliability. The integrated power drive and power transfer system has a pair of variable displacement hydraulic devices each in a separate hydraulic circuit and each having a drive shaft connected into a summing gear train connected to an output shaft. A selectively-operable brake is in the operative connection between the output shaft and the summing gear train and controls either driving of the output shaft with both variable displacement hydraulic devices operating as motors or transfer of power between the hydraulic circuits with one variable displacement hydraulic device operating as a motor and the other as a pump.

摘要翻译： 在许多飞机中，有由液压动力驱动装置驱动的机械驱动系统定位的飞行控制面。 在系统的一个泵故障的情况下，还有用于将液压动力从一个飞行器液压系统传输到另一个的装置。 在单个单元中执行这两个功能的结构的集成将导致成本和重量的降低以及增加的可靠性。 集成的动力驱动和动力传递系统具有一对可变排量液压装置，每个液压装置分开在液压回路中，每个具有连接到与输出轴连接的相加齿轮系的驱动轴。 一个选择性可操作的制动器处于输出轴和求和齿轮系之间的操作连接中，并且控制输出轴的驱动，两个可变排量的液压装置作为电动机操作，或者在液压回路之间用一个可变排量液压装置 作为电机运行，另一个作为泵运行。

公开(公告)号：US4075843A

公开(公告)日：1978-02-28

申请号：US729895

申请日：1976-10-06

申请人： Richard E. Leker

发明人： Richard E. Leker

IPC分类号： F16H39/14 ,  F15B15/18 ,  F16H39/46

CPC分类号： F16H39/14

摘要： A hydraulic transmission operates throughout a continuous range between a neutral condition and a direct drive one to one ratio of input shaft speed to output shaft speed. The input shaft carries a rotor which provides a hydraulic pump for the input side of the transmission. Reciprocating pistons of the input pump move in camming fashion against an input side swash plate as the input shaft rotates. The fluid that is displaced in the input side pump is directed into an output side pump which is carried on the output shaft. Reciprocating pistons of the output pump are hydraulically forced against an output side swash plate to effect rotation of the output shaft. A sleeve and lever assembly controls the stroke length of the pistons of the input pump in order to vary its fluid displacement relative to that of the output pump, thereby varying the transmission ratio. Each swash plate presents a pair of flat camming surfaces which are angled relative to one another in order to maintain a balanced torque condition with respect to the transmission axis. In an alternative embodiment of the invention, the swash plates are carried on the respective shafts and the pumps are interlocked with one another for rotation in unison.

摘要翻译： 液压变速器在中性条件和直接驱动输入轴转速与输出轴转速之比的一个连续范围内运行。 输入轴带有转子，该转子为变速器的输入侧提供液压泵。 当输入轴旋转时，输入泵的往复活塞以凸轮方式移动到输入侧斜盘。 在输入侧泵中移动的流体被引导到输出侧泵，输出侧泵承载在输出轴上。 输出泵的往复活塞液压地迫使输出侧斜盘受到输出轴的旋转。 套筒和杆组件控制输入泵的活塞的冲程长度，以改变其相对于输出泵的流体位移，从而改变传动比。 每个斜盘呈现一对相对于彼此成角度的平坦的凸轮表面，以便相对于传动轴保持平衡的转矩状态。 在本发明的替代实施例中，斜盘承载在相应的轴上，并且泵彼此互锁以一致地旋转。

公开(公告)号：US3221571A

公开(公告)日：1965-12-07

申请号：US26549263

申请日：1963-03-15

申请人： CAMBI IDRAULICI BADALINI S P A

发明人： GIOVANNI BADALINI

IPC分类号： F16H39/14 ,  F16H61/40 ,  F16H61/4165 ,  F16H61/42 ,  F16H61/439 ,  F16H61/46 ,  F16H61/462

CPC分类号： F16H61/439 ,  F16H39/14 ,  F16H61/4165 ,  F16H61/42 ,  F16H61/46 ,  F16H61/462