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1. 发明专利

JP2000055194A WORKING VEHICLE 失效
公开(公告)号：JP2000055194A
公开(公告)日：2000-02-22
申请号：JP22148098
申请日：1998-08-05
申请人： KUBOTA KK , KUBOTA SEIKI CORP
发明人： TAKAGI MASAO , UENISHI SEIJI , OKANO AKIHISA , MACHIDA MASARU , OKAMOTO MUNEHARU , HATTORI AKIO
IPC分类号： B60K20/02 , F16H61/26
摘要： PROBLEM TO BE SOLVED: To provide a working vehicle which can make a simple shifting operation of a main transmission and an aux. transmission using a single shift lever, etc. SOLUTION: A system to make mechanical shifting of an aux. transmission is provided in which a shift lever 10 is turned into a shift range, and a control device is arranged so that, when the lever 10 is turned forward within the shift range, a hydraulic cylinder is operated with a signal from a speed increase switch SwU to shift the main transmission in the direction one step upward, and when the lever 10 is turned backward within the shift range, the hydraulic cylinder is operated with a signal from a speed decrease switch SwD to shift the main transmission in the direction one step down.

2. 发明专利

JP2000055195A WORKING VEHICLE 失效
公开(公告)号：JP2000055195A
公开(公告)日：2000-02-22
申请号：JP22148198
申请日：1998-08-05
申请人： KUBOTA KK , KUBOTA SEIKI CORP
发明人： MACHIDA MASARU , OKANO AKIHISA , HATTORI AKIO
IPC分类号： B60K20/02 , B60W10/02 , B60W10/10 , F16H61/26 , B60K41/22
摘要： PROBLEM TO BE SOLVED: To establish a smooth and certain shifting operation in a synchro- meshing gearing system in which shifting is made using a hydraulic cylinder. SOLUTION: This working vehicle is equipped with gearing transmission mechanisms T1-T3 to perform shifting by operating a shifting member with hydraulic cylinders P1-P4, and a control device is arranged so that the oil is exhausted from the cylinders P1-P4 in the shift is not completed within the set time from the start of shifting operation by the cylinders, or the cylinders P1-P4 are operated in the reverse direction and the shift operation force is released temporarily, and then the shifting operation is started again by the cylinders P1-P4.

3. 发明专利

JPH1191386A WORK VEHICLE 失效
公开(公告)号：JPH1191386A
公开(公告)日：1999-04-06
申请号：JP26013597
申请日：1997-09-25
申请人： KUBOTA KK , KUBOTA SEIKI CORP
发明人： MACHIDA MASARU , YOSHIOKA HIDETAKA , HATTORI AKIO
IPC分类号： B60K17/34
摘要： PROBLEM TO BE SOLVED: To make the switching action of the drive mode of front wheels with a small actuator by providing a constant-speed clutch and an acceleration clutch on the same axis, providing a shift member reciprocated on this axis, and reciprocating the shift member along the axis with the actuator. SOLUTION: An acceleration clutch B and a constant-speed clutch C are provided on the same axis of a front wheel drive shaft 32, and a shift member 43 slide-movable in the axial direction in the spline-coupled state is provided on the front wheel drive shaft 32 at a middle position between them. When the shift member 43 is slid to a position S where its meshing pawl 43A is meshed with the meshing pawl 38A of a fourth gear 38, a constant-speed drive state is attained. When the shift member 43 is slid to a position U where it is pressed to friction disks 42, a high-speed drive state is attained. A power nontransmission state is attained in a middle position N between them. The constant-speed drive state, high-speed drive state, and nondrive state can be switched by the driving force of a single hydraulic cylinder accordingly.

4. 发明专利

JP2000240692A SPEED CHANGE OPERATION STRUCTURE OF WORKING VEHICLE 失效
公开(公告)号：JP2000240692A
公开(公告)日：2000-09-05
申请号：JP4644499
申请日：1999-02-24
申请人： KUBOTA KK , KUBOTA SEIKI CORP
发明人： FUKUMOTO TOSHIYA , MACHIDA MASARU , HATTORI AKIO
IPC分类号： F16H63/46 , F16D48/02
摘要： PROBLEM TO BE SOLVED: To inhibit occurrence of shock due to sucking of a spool at the time of clutch meet while reducing the operation time required for operating a hydraulic clutch to be connected. SOLUTION: A valve mechanism V is interlocked with the operation of an actuator so that a hydraulic clutch 9 is actuated not to be connected according to the operation start of an actuator A for gear shifting a geared transmission, and actuated to be connected according to the operation end of the actuator A. A control means C is provided for controlling an opening of the valve mechanism V to enlarge a valve opening for a preset time (t) from the connecting operation start of the hydraulic clutch 9 and gradually raise the pressure of the hydraulic clutch after the lapse of preset time (t), and the control means C is adapted to change a current value (a) for opening the valve, which is supplied to the valve mechanism V immediately after the lapse of the preset time (t) to a value lower than a current value (b) for controlling the opening of the valve mechanism V to a target opening where suitable clutch meet pressure of the hydraulic clutch 9 is obtained.

5. 发明专利

JP2000055205A GASKET 失效
公开(公告)号：JP2000055205A
公开(公告)日：2000-02-22
申请号：JP22421598
申请日：1998-08-07
申请人： KUBOTA KK , KUBOTA SEIKI CORP , NOK CORP
发明人： MACHIDA MASARU , HATTORI AKIO , KUWABARA AKIRA
IPC分类号： F16J15/12
摘要： PROBLEM TO BE SOLVED: To dispense with an earth lead wire by providing an electric device side earth terminal part and a wall member side earth terminal part in a conductive substrate provided with a bead part sandwiched between wall members. SOLUTION: The circumferential edge of a borehole 5 inside a bead part 4 above a conductive substrate 2 is diagonally bent downward across the whole circumference, a tapered electric device side earth terminal part 6 is provided, and a wall member side earth terminal part 7 is provided between the bead part 4 and the electrical device side earth terminal part 6. A gasket 1 is installed between wall members 51, 55, and the both wall members 51, 55 are fastened by a bolt so that the tip 6a of the electrical device side earth terminal part 6 touches with the metal part on the top face of a solenoid valve 53, and the tip 7a of the wall member side earth terminal part 7 touches with the top face of the circumferential wall of the bottom-side wall member 51 to form an earth path from the solenoid valve 53 via the conductive substrate 2 to the bottom-side wall member 51. This constitution can earth the solenoid valve without wiring any earth lead wire.

6. 发明专利

JPH1191387A WORK VEHICLE 失效
公开(公告)号：JPH1191387A
公开(公告)日：1999-04-06
申请号：JP26013697
申请日：1997-09-25
申请人： KUBOTA KK , KUBOTA SEIKI CORP
发明人： YOSHIOKA HIDETAKA , MACHIDA MASARU , HATTORI AKIO
IPC分类号： B60K17/34 , B60T1/06
摘要： PROBLEM TO BE SOLVED: To apply strong braking force to a travel system by storing a constant-speed clutch and an acceleration clutch in a case to form a front wheel shift device, and providing a restraining member preventing the rotation of a transmission shaft interlocked with rear wheels by an action from the outside of the case. SOLUTION: A restraining member 56 coupled with or released from the tooth section of a first gear 35 from the diameter direction is slidably provided. The restraining member 56 prevents the rotation of a transmission system against a travel system by the meshing with the first gear 35. A compression spring 57 protrusively exciting in the coupling direction is provided on the outer end side. A switching arm 60 and a main shift lever 11 are connected via a wire 65. When the main shift lever 11 is operated to a parking position P, the restraining member 56 is protruded by the exciting force of the compression spring 57 via the loosening of the wire 65 interlocked with the main shift lever 11 into the coupled state with the first gear 35, rear wheels are kept at the braked state, and the movement of a vehicle body by its tare weight can be prevented.

7. 发明专利

JPH10259869A STRUCTURE OF OPERATION PART OF HYDRAULIC TRANSMISSION DEVICE 失效
公开(公告)号：JPH10259869A
公开(公告)日：1998-09-29
申请号：JP6778497
申请日：1997-03-21
申请人： KUBOTA KK , KUBOTA SEIKI CORP
发明人： MACHIDA MASARU , NAKADA HIROO , HATTORI AKIO
IPC分类号： F16H61/32
摘要： PROBLEM TO BE SOLVED: To hardly cause failure due to suction of iron powder into solenoid valves even in the case that the iron powder is mixed with lubricating oil while utilizing lubricating oil for mission as insulative oil for the solenoid valves. SOLUTION: Lubricating oil A inside a gear mission case 7 is suctioned by a hydraulic pump PM through a filter F2 and supplied to solenoid valves 71, 72 as hydraulic fluid. The solenoid valves 71, 72 are arranged in a valve housing chamber 83 partitioned from a mission housing space S in the gear mission case 7. Tank ports TP of the solenoid valves 71, 72 are opened into the valve housing chamber 83.

8. 发明专利

JP2005188755A Working vehicle 审中-公开
标题翻译：工作车辆
公开(公告)号：JP2005188755A
公开(公告)日：2005-07-14
申请号：JP2005043988
申请日：2005-02-21
申请人： Kubota Corp , Kubota Seiki Corp , クボタ精機株式会社 , 株式会社クボタ
发明人： MACHIDA MASARU , OKANO AKIHISA , HATTORI AKIO
IPC分类号： F16H61/28 , F16H61/12 , F16H61/68 , F16H61/682
摘要： PROBLEM TO BE SOLVED: To provide a working vehicle with hydraulic cylinders to be operated during shift for shifting a synchromesh type gear system, allowing smooth and reliable shifting operation.
SOLUTION: Gear shift mechanisms T1-T3 perform shift by operating a shift member with the operation of the hydraulic cylinders P1-P4. A control device uses a measuring means for measuring a difference in the rotating speed of a transmission shaft between the transmission upstream and downstream sides of a shift gear. When a rotating speed ratio measured by the measuring means in a preset time since starting shift during shift reaches a preset value, the completion of the shifting operation is detected and then the input of a hydraulic clutch is operated. When the rotating speed ratio does not reach the preset value, oil is discharged from the hydraulic cylinders P1-P4. Otherwise, the hydraulic cylinders P1-P4 are operated in the opposite direction to temporarily cancel shift operating force and then the shifting operation of the hydraulic cylinders P1-P4 is restarted.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供在移动期间操作的液压缸的作业车辆，用于移动同步啮合式齿轮系统，允许平稳和可靠的换档操作。解决方案：变速机构T1-T3通过在液压缸P1-P4的操作下操作变速构件来进行换档。控制装置使用测量装置来测量变速齿轮的变速器上游侧和下游侧之间的传动轴的转速差。当由变速装置起动变速后的预设时间内由测量机构测量的转速比达到预设值时，检测到变速操作的完成，然后操作液压离合器的输入。当转速比未达到预设值时，油从液压缸P1-P4排出。否则，液压缸P1-P4以相反的方向操作以临时取消换档操作力，然后液压缸P1-P4的换档操作重新启动。版权所有（C）2005，JPO＆NCIPI

9. 发明专利

JP2005188754A Working vehicle 审中-公开
标题翻译：工作车辆
公开(公告)号：JP2005188754A
公开(公告)日：2005-07-14
申请号：JP2005043987
申请日：2005-02-21
申请人： Kubota Corp , Kubota Seiki Corp , クボタ精機株式会社 , 株式会社クボタ
发明人： MACHIDA MASARU , OKANO AKIHISA , HATTORI AKIO
IPC分类号： F16H61/28 , F16H61/02 , F16H61/682
摘要： PROBLEM TO BE SOLVED: To provide a working vehicle with hydraulic cylinders to be operated during shift for shifting a synchromesh type gear system, allowing smooth and reliable shifting operation.
SOLUTION: Gear shift mechanisms T1-T3 perform shift by operating a shift member with the operation of the hydraulic cylinders P1-P4. A control device determines the completion of the shift in accordance with detected circuit pressure in the hydraulic cylinders P1-P4. When the non-completion of the shift in a preset time since starting the shifting operation of the hydraulic cylinders P1-P4 is determined, oil is discharged from the hydraulic cylinders P1-P4. Otherwise, the hydraulic cylinders P1-P4 are operated in the opposite direction to temporarily cancel shift operating force and then the shifting operation of the hydraulic cylinders P1-P4 is restarted.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供在移动期间操作的液压缸的作业车辆，用于移动同步啮合式齿轮系统，允许平稳和可靠的换档操作。解决方案：变速机构T1-T3通过在液压缸P1-P4的操作下操作变速构件来进行换档。控制装置根据液压缸P1-P4中检测到的回路压力来确定变速完成。当确定在开始液压缸P1-P4的换档操作之后的预设时间内的不完成换档时，油从液压缸P1-P4排出。否则，液压缸P1-P4以相反的方向操作以临时取消换档操作力，然后液压缸P1-P4的换档操作重新启动。版权所有（C）2005，JPO＆NCIPI

10. 发明专利

JPH09242871A TRANSMISSION GEAR FOR WORKING MACHINE 失效
公开(公告)号：JPH09242871A
公开(公告)日：1997-09-16
申请号：JP4579096
申请日：1996-03-04
申请人： KUBOTA KK , KUBOTA SEIKI KK
发明人： MACHIDA MASARU , HATTORI AKIO
IPC分类号： F16H63/02 , F16H61/28
摘要： PROBLEM TO BE SOLVED: To reduce an arranging space required for reconstruction for compacting a device with light speed change operation kept as it is by reforming a power shift device which carrys out the speed change operation through a hydraulic actuater into an electric control system. SOLUTION: Two hydraulic cylinders 11, 12 for driving a main speed change mechanism for running, two 4-position changing over type solenoid valves 18-21 for conducting the function of the above cylinders 11, 12, and a hydraulic clutch 3 for speed changing are prepared to compose an electric control type power shift device by which the hydraulic clutch 3 is automatically engaged and disengaged with speed changing. The power shift device is composed so that the main speed change mechanism may be speed-changed into four steps by the combination of turning on and off of the solenoid valves 18-21, and in the case where the solenoid valves 18-21 are wholly turned off, the speed change mechanism is set up so as to be operated to the first shift position.

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