公开(公告)号：US06397966B1

公开(公告)日：2002-06-04

申请号：US09489680

申请日：2000-01-24

Applicant: Koji Irikura ,  Norihiro Ishii ,  Ryota Ohashi ,  Kenichi Takada ,  Hirohiko Kawada ,  Robert Abend ,  Keith J. Andrews ,  Toshiyuki Hasegawa ,  Hiroaki Shimizu

Inventor： Koji Irikura ,  Norihiro Ishii ,  Ryota Ohashi ,  Kenichi Takada ,  Hirohiko Kawada ,  Robert Abend ,  Keith J. Andrews ,  Toshiyuki Hasegawa ,  Hiroaki Shimizu

IPC: B62D1100

CPC classification number: A01D69/03 ,  B60K17/105 ,  B62D11/006 ,  B62D11/04 ,  B62D11/18 ,  B62D11/24 ,  F16H39/14

Abstract: A vehicle is installed with an integral transaxle apparatus constructed so that a single housing contains left and right axles, a driving hydrostatic transmission (HST) having a variable displacement first hydraulic pump and a first hydraulic motor fluidly connected with each other, a steering HST having a variable displacement second hydraulic pump and a variable displacement second hydraulic motor fluidly connected with each other, and a differential unit differentially connecting the axles with each other so as to be driven regularly or reversely by the output of the driving HST and to differentially drive the axles while receiving the output of the steering HST, wherein the first hydraulic pump receives power of a prime mover and has a first movable swash plate, and the second hydraulic pump receives power of the prime mover independently of the first hydraulic pump and has a second movable swash plate. The vehicle is also provided with driving operating means for slanting operation of the first movable swash plate for switching the travelling direction between forward and backward and for changing the travelling speed, and steering operating means for slanting operation of the second movable swash plate so as to determine the leftward and rightward cornering angle. The second hydraulic motor has a third movable swash plate interlocking with the driving operating means so that the slanting direction of the third movable swash plate is changed oppositely with respect to its neutral position according to the travelling direction switching operation of the driving operating means, whereby the vehicle turns laterally in the same direction of leftward and rightward steering operation of the steering operating means whether the vehicle travels forward or backward.

Abstract translation: 车辆安装有整体的驱动桥装置，其构造成使得单个壳体包含左轴和右轴，具有可变排量第一液压泵的驱动静液压变速器（HST）和彼此流体连接的第一液压马达，转向HST具有 相互流体连接的可变排量第二液压泵和可变排量第二液压马达，以及差动单元，其将轴彼此差分地连接，以便通过驱动HST的输出有规则地或相反地驱动，并差动驱动 同时接收转向HST的输出，其中第一液压泵接收原动机的动力并具有第一可动斜盘，并且第二液压泵独立于第一液压泵接收原动机的动力，并且具有第二 活动斜盘 车辆还设置有用于使第一可动斜盘倾斜操作的驱动操作装置，用于切换前后的行进方向和用于改变行驶速度;以及用于使第二可动斜盘的倾斜操作的转向操作装置，以便 确定左右拐角。 第二液压马达具有与驱动操作装置互锁的第三可动斜盘，使得根据驱动操作装置的行进方向切换操作，第三可动斜盘的倾斜方向相对于其中立位置相反地改变，由此 在车辆向前或向后行驶时，车辆在与转向操作装置的向左和向右转向操作相同的方向上横向转动。

公开(公告)号：US06216560B1

公开(公告)日：2001-04-17

申请号：US09457584

申请日：1999-12-09

Applicant: Kenichi Takada ,  Ryota Ohashi ,  Hironori Sumomozawa ,  Hiroaki Shimizu

Inventor： Kenichi Takada ,  Ryota Ohashi ,  Hironori Sumomozawa ,  Hiroaki Shimizu

IPC: B60K1710

CPC classification number: B60K17/105 ,  F01B3/02 ,  F02B61/00 ,  F16D31/02 ,  F16H39/14 ,  Y10T74/2066 ,  Y10T74/2186

Abstract: An axle driving apparatus in which a hydraulic pump and a hydraulic motor which constitute a hydrostatic transmission are disposed on a center section. In a horizontal portion of the center section are provided a pair of linear oil passages in parallel to each other. A pair of arcuate ports are provided on a pump mounting surface formed on the horizontal portion of the center section. The pair of arcuate ports are substantially perpendicular with respect to the direction in which the oil passages extend. The axis of slanting movement of a movable swash plate of the hydraulic pump extends laterally of the vehicle body on which the axle driving apparatus is provided. The rotating direction of an arm provided on a control shaft for slantingly operating the movable swash plate is coincident with the operating direction of a control rod connected with a speed changing member. Thus, the link mechanism for connecting the speed changing member and the control arm for the movable swash plate is simplified.

Abstract translation: 其中构成静液压变速器的液压泵和液压马达设置在中心部分上的车轴驱动装置。 在中心部分的水平部分中设置有彼此平行的一对直线油道。 一对弧形端口设置在形成在中心部分的水平部分上的泵安装表面上。 一对弓形端口相对于油路延伸的方向基本垂直。 液压泵的可动斜盘的倾斜运动的轴线在设置有车轴驱动装置的车身的侧面上延伸。 设置在用于倾斜地操作可动斜盘的控制轴上的臂的旋转方向与与变速构件连接的控制杆的操作方向一致。 因此，用于连接变速构件和用于可动斜盘的控制臂的连杆机构被简化。

公开(公告)号：US06196348B1

公开(公告)日：2001-03-06

申请号：US09119631

申请日：1998-07-21

Applicant: Kazuhiko Yano ,  Toshiro Azuma ,  Ryota Ohashi

Inventor： Kazuhiko Yano ,  Toshiro Azuma ,  Ryota Ohashi

IPC: B60K17356

CPC classification number: B60K17/356 ,  B60K7/0015 ,  B60K17/105 ,  B60K23/08 ,  B60Y2200/223

Abstract: A first hydraulic pump P1 driven by power of an engine and a first hydraulic motor M1 are fluidly connected so as to form a closed fluid circuit. An output shaft 2 of first hydraulic motor M1 is drivingly connected with a subtransmission 3. The output power from sub-transmission 3 drives main-driving wheels 5 and also drives a second hydraulic pump P2 fluidly connected with a second hydraulic motor M2 for driving sub-driving wheels 6. A clutch 7 is interposed between an output shaft 4 of sub-transmission 3 and an input shaft 9 of second hydraulic pump P2 or on the output side of second hydraulic motor M2. Second hydraulic pump P2 or second hydraulic motor M2 has variable displacement, so that second hydraulic motor M2 is drivingly accelerated in proportion to the degree of turning operation of a steering operating tool 31. In case that a plurality of front reel mowers 8FL, 8FM and 8FR are disposed in front of the vehicle body, a pair of decelerator casings 29 are disposed on both lateral sides of transmission casing 1 for driving main-driving wheels 5. Decelerator casings 29 project horizontally forward and support main-driving wheels 5 respectively at their front portions. Middle front reel mower 8FM is disposed between left and right decelerator casings 29.

Abstract translation: 由发动机的动力和第一液压马达M1驱动的第一液压泵P1流体地连接，形成封闭的流体回路。 第一液压马达M1的输出轴2与副变速器3驱动连接。来自副变速器3的输出动力驱动主驱动轮5，并且还驱动与第二液压马达M2流体连接的第二液压泵P2，以驱动副 驱动轮6.离合器7插入在副变速器3的输出轴4和第二液压泵P2的输入轴9之间或第二液压马达M2的输出侧。 第二液压泵P2或第二液压马达M2具有可变排量，使得第二液压马达M2与转向操作工具31的转动程度成比例地驱动地加速。在多个前卷取机割草机8FL，8FM和 8FR设置在车身前方，一对减速器壳体29设置在变速器壳体1的两侧，用于驱动主驱动轮5.减速器壳体29分别水平向前突出并支撑主驱动轮5 前部。 中间前卷取机8FM设置在左右减速箱28之间。

公开(公告)号：US6109032A

公开(公告)日：2000-08-29

申请号：US192315

申请日：1998-11-16

Applicant: Hiroaki Shimizu ,  Ryota Ohashi ,  Masaru Iida

Inventor： Hiroaki Shimizu ,  Ryota Ohashi ,  Masaru Iida

IPC: B60K17/10 ,  F16H61/40 ,  F16H61/4157 ,  F16H61/42 ,  F16H61/433 ,  F16H61/437 ,  F16H61/438 ,  F16H61/439 ,  F16D31/02 ,  F01B3/02

CPC classification number: F16H61/438 ,  B60K17/10 ,  F16H61/4157 ,  F16H61/42 ,  F16H61/433 ,  F16H61/437 ,  F16H61/439 ,  B60K17/105

Abstract: A hydrostatic transmission is provided comprising a hydraulic pump and a hydraulic motor fluidly connected with each other through a closed fluid circuit. Pistons press against a control arm connected with a movable swash plate of the hydraulic pump and generate a friction force when the movable swash plate, which has been rotated slantwise, automatically returns toward the neutral position by a neutral return spring. The movable swash plate gradually returns to the neutral position by pressure of the piston. A discharging oil hole is open at the utmost end of each of the pistons for draining a portion of operating oil which operates the piston in the closed fluid circuit to the interior of a housing. Grooves are formed along a surface of the control arm abutting against the pistons. When the movable swash plate is rotated between the neutral position and a predetermined position, the discharging oil holes are connected to the interior of the housing through the grooves so as to release the oil pressure out of the closed fluid circuit. Thus, braking shock can be moderated and the neutral position can be expanded.

公开(公告)号：US5850736A

公开(公告)日：1998-12-22

申请号：US730657

申请日：1996-10-11

Applicant: Shinya Sakakura ,  Ryota Ohashi ,  Shigenori Sakikawa

Inventor： Shinya Sakakura ,  Ryota Ohashi ,  Shigenori Sakikawa

IPC: F16H39/06 ,  F16H61/40 ,  F16H61/4017 ,  F16H61/4026 ,  F16H61/4043 ,  F16H61/4139 ,  F16D31/02 ,  F16D39/00

CPC classification number: F16H39/06 ,  F16H61/40 ,  F16H61/4017 ,  F16H61/4139 ,  F16H61/4043

Abstract: A hydrostatic transmission constructed so that a check valve and a relief valve are made as compact as possible to supply oil to a closed circuit for connecting a hydraulic pump and a hydraulic motor, and to regulate maximum pressure in the closed circuit. A check valve and a relief valve are contained in a valve casing. A valve body of the relief valve is disposed opposite to a valve body of the check valve. A relief spring of the relief valve is retained by a cover detachably mounted to an open end of the valve casing, thereby facilitating pressure setting of the relief valve. The valve body of the relief valve is contained in a relief valve casing slidably disposed in the valve casing. A plunger, capable of urging the check valve in the opening direction via the relief valve casing, is provided in the cover, thereby enabling the check valve to be manually opened.

Abstract translation: 构造成使得止回阀和安全阀尽可能紧凑的静液压传动装置将油供给到用于连接液压泵和液压马达的闭路，并且调节闭路中的最大压力。 止回阀和安全阀包含在阀壳体中。 安全阀的阀体与止回阀的阀体相对设置。 安全阀的释放弹簧由可拆卸地安装到阀壳的开口端的盖保持，从而有利于安全阀的压力设定。 安全阀的阀体容纳在可滑动地设置在阀壳体中的安全阀壳体中。 能够通过安全阀壳体向止回阀向打开方向推压的柱塞设置在盖体内，能够手动打开止回阀。

公开(公告)号：US5836159A

公开(公告)日：1998-11-17

申请号：US872672

申请日：1997-06-11

Applicant: Hiroaki Shimizu ,  Ryota Ohashi

Inventor： Hiroaki Shimizu ,  Ryota Ohashi

IPC: B60T1/093 ,  F16H61/42 ,  F16H61/439 ,  F16D39/00

CPC classification number: F16H61/439 ,  B60T1/093 ,  F16H61/4157 ,  F16H61/42 ,  F16H61/437

Abstract: A hydrostatic transmission comprising a hydraulic pump and a hydraulic motor fluidly connected with each other through a closed fluid circuit. Pistons press against a control arm connected with a movable swash plate of the hydraulic pump and generate a friction force when the movable swash plate, which has been rotated slantwise, automatically returns toward the neutral position by a neutral return spring. The movable swash plate gradually returns to the neutral position by pressure of the piston. A discharging oil hole is open at the utmost end of each of the pistons for draining a portion of operating oil which operates the piston in the closed fluid circuit to the interior of a housing. Grooves are formed along a surface of the control arm abutting against the pistons. When the movable swash plate is rotated between the neutral position and a predetermined position, the discharging oil holes are connected to the interior of the housing through the grooves so as to release the oil pressure out of the closed fluid circuit. Thus, braking shock can be moderated and the neutral position can be expanded.

Abstract translation: 一种液压传动装置，包括液压泵和通过闭合流体回路流体连接的液压马达。 活塞压靠与液压泵的可动斜盘连接的控制臂，当已经旋转的可动斜盘自动返回中立位置时，产生摩擦力。 可动斜盘通过活塞的压力逐渐返回中立位置。 排放油孔在每个活塞的最大端部是开放的，用于排出将封闭流体回路中的活塞操作到壳体内部的一部分操作油。 沟槽沿着与活塞邻接的控制臂的表面形成。 当可动斜盘在中立位置和预定位置之间转动时，排放油孔通过槽连接到壳体内部，从而将油压从封闭流体回路释放。 因此，可以缓和制动冲击，并且可以扩大中立位置。

公开(公告)号：US5074195A

公开(公告)日：1991-12-24

申请号：US623772

申请日：1990-12-07

Applicant: Ryota Ohashi ,  Kenichi Takada

Inventor： Ryota Ohashi ,  Kenichi Takada

IPC: F16H39/06 ,  F01B13/04 ,  F04B1/20 ,  F04B1/22 ,  F16H47/02

CPC classification number: F01B13/04 ,  F04B1/22

Abstract: A fixed swash plate for an axial piston machine of fixed capacitive type, which has a casing housing therein a cylinder, is formed to have its divided surfaces on the horizontal plane along the axis of the rotary shaft of the cylinder, wherein a support member constituting a fixed swash plate is formed to be easy to produce and the casings merely sandwich therebetween the support member, whereby a thrust bearing constituting the fixed swash plate is held in the state of being slanted at a predetermined angle other than 90.degree. with respect to the axis of rotary shaft. Also, the rotation direction of the fixed capacitive type axial piston machine is easy to change by inverting at an angle of 180.degree. the assembling direction of support member constituting the fixed swash plate.

Abstract translation: 一种固定电容式轴向活塞机的固定斜盘，其具有容纳在其中的壳体的壳体，其形成为沿着所述气缸的旋转轴的轴线在水平面上具有分割表面，其中构成 形成易于制造的固定斜盘，并且壳体仅夹持在支撑构件之间，由此构成固定斜盘的止推轴承以相对于 旋转轴轴。 此外，固定电容式轴向活塞机的旋转方向容易通过以构成固定斜盘的支撑构件的组装方向以180°的角度倒转而变化。

公开(公告)号：US4886142A

公开(公告)日：1989-12-12

申请号：US211912

申请日：1988-06-27

Applicant: Kojiro Yamaoka ,  Toshiro Azuma ,  Kazuhiko Yano ,  Ryota Ohashi

Inventor： Kojiro Yamaoka ,  Toshiro Azuma ,  Kazuhiko Yano ,  Ryota Ohashi

IPC: B60K17/356

CPC classification number: B60K17/356

Abstract: A hydraulic four-wheel drive apparatus for driving by a hydraulic motor four wheels: steering wheels and driving wheels, in which the steering wheels are driven by a variable capacity motor for the steering wheels and a front differential gear unit, and the driving wheels are driven by a fixed capacity motor for the driving wheels, so that, when a vehicle turns, a swash plate of the variable capacity motor associates with operation of a steering handle, thereby accelerating the speeds of steering wheels.

Abstract translation: 一种液压四轮驱动装置，用于通过液压马达驱动四轮：方向盘和驱动轮，其中方向盘由用于方向盘的可变容量马达和前差速齿轮单元驱动，并且驱动轮是 由用于驱动轮的固定容量电动机驱动，使得当车辆转动时，可变容量电动机的斜盘与转向手柄的操作相关联，从而加速方向盘的速度。

公开(公告)号：US4643442A

公开(公告)日：1987-02-17

申请号：US761886

申请日：1985-08-02

Applicant: Ryota Ohashi ,  Masahisa Kawamura ,  Koichiro Fujisaki

Inventor： Ryota Ohashi ,  Masahisa Kawamura ,  Koichiro Fujisaki

IPC: E02F9/22 ,  A01B63/00 ,  A01B63/10 ,  F15B11/17 ,  A01B59/043

CPC classification number: A01B63/1006

Abstract: In a working vehicle having hydraulic lift cylinder (39) on the top of rear end of the vehicle and seat (34) above the cylinder case (33) of such cylinder, fluid supply system is provided which supplies fluid from a single pump (47) to both of the lift cylinder and fluid-operated working implements. This system comprises first and second valve assemblies (49, 50), connected in series and mounted on the cylinder case (33), for controlling operation of the lift cylinder and working implements, respectively. The second valve assembly (50) is particularly disposed, for an easy mounting and piping, horizontally along a lateral direction within large open space before the cylinder head (81) of cylinder case (33) and below the seat (34) by mounting same to the front of head (81). For this, stop valve (52) for lift cylinder (39) is disposed within the head (81) so as to be displayed laterally and a vertical seating surface (96) is formed to the front of head (81).

Abstract translation: 在具有在车辆后端顶部的液压提升缸（39）和该气缸的气缸壳体（33）上方的座（34）的工作车辆中，提供了从单个泵（47）提供流体的流体供应系统 ）到提升缸和流体操作的作业工具。 该系统包括串联连接并安装在气缸壳体（33）上的第一和第二阀组件（49,50），用于分别控制提升缸和作业工具的操作。 第二阀组件（50）特别设置用于通过安装相同的方式在气缸壳体（33）的气缸盖（81）和座椅（34）下方的大开放空间内在横向方向上水平地安装和管道 到头部（81）的前部。 为此，用于提升缸（39）的截止阀（52）设置在头部（81）内以便横向显示，并且在头部（81）的前部形成有垂直的安装表面（96）。

公开(公告)号：US4096882A

公开(公告)日：1978-06-27

申请号：US752198

申请日：1976-12-20

Applicant: Kazuhiko Yano ,  Kazuhiko Otsuki ,  Ryota Ohashi

Inventor： Kazuhiko Yano ,  Kazuhiko Otsuki ,  Ryota Ohashi

IPC: F16D48/02 ,  F15B13/06

CPC classification number: F16D25/14 ,  F16D48/02 ,  F16D2048/0209 ,  F16D2048/0212 ,  F16D2048/0221 ,  Y10T137/86662 ,  Y10T137/87169 ,  Y10T137/87177

Abstract: A control valve having a rotor for communicating outlet port or ports selectively to fluid drain port or to inlet port so as to change flow direction of fluid to be supplied to fluid operated apparatus. The control valve comprises first and second pistons inserted in a hollow space of the rotor and a compression spring arranged between the pistons. At the operation position(s) of the rotor or the valve, the first piston which is biased by the compression spring oscillatingly blocks and reopens fluid passage formed within the rotor outside the first piston for communicating the inlet port to the outlet port(s) under the influence of the compression spring and fluid pressure of the outlet port(s) from which fluid is constantly drained with a small rate through the valve. Fluid pressure of the outlet port may be varied by varying the force of the compression spring by an advance of the second piston. Consequently, by controlling the advance of the second piston, fluid pressure of the outlet port(s), namely fluid pressure applied to the fluid operated apparatus may be controlled. The control valve thus functions not only as a change-over valve but as a valve for controlling fluid pressure applied to fluid operated apparatus.

Abstract translation: 一种控制阀，具有用于将出口或端口选择性地连接到流体排放口或入口端口的转子，以便改变供给流体驱动装置的流体的流动方向。 控制阀包括插入在转子的中空空间中的第一和第二活塞以及布置在活塞之间的压缩弹簧。 在转子或阀门的操作位置，由压缩弹簧偏压的第一活塞在第一活塞外部摆动并重新打开形成在第一活塞外部的转子内的流体通道，用于将入口连通到出口， 在压缩弹簧和出口的流体压力的影响下，流体通过阀门以较小的速率不断地排出。 出口的流体压力可以通过第二活塞的前进改变压缩弹簧的力来改变。 因此，通过控制第二活塞的前进，可以控制出口端口的流体压力，即施加到流体操作装置的流体压力。 因此，控制阀不仅用作转换阀，而且用作用于控制施加到流体操作装置的流体压力的阀。