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1. 发明专利

JP2562516B2 失效
公开(公告)号：JP2562516B2
公开(公告)日：1996-12-11
申请号：JP33199990
申请日：1990-11-28
申请人： KENSETSUSHO HOKURIKUCHIHO KENSETSUKYOKUCHO , KUBOTA KK
发明人： KAMIMURA HIROSHI , NAKAGAWA TAKESHI , TAKAI KENICHI , YAMAGUCHI TETSUO , NAKAMURA NORIMI , FURUBAYASHI MITSUGI
IPC分类号： A01B63/111 , A01D34/24 , A01D34/43 , A01D34/54 , A01D34/74

2. 发明专利

JP2862122B2 失效
公开(公告)号：JP2862122B2
公开(公告)日：1999-02-24
申请号：JP6053994
申请日：1994-03-30
申请人： KENSETSUSHO HOKURIKUCHIHO KENSETSUKYOKUCHO , KUBOTA KK
发明人： KAMIMURA HIROSHI , NAKAGAWA TAKESHI , NAOI SOICHI , YAMAGUCHI TETSUO , NAKAMURA NORIMI , FURUBAYASHI MITSUGI
IPC分类号： A01D34/54

3. 发明专利

JPH03249479A DEVICE FOR CONTROLLING RUNNING OF WORKING VEHICLE 失效
公开(公告)号：JPH03249479A
公开(公告)日：1991-11-07
申请号：JP4905990
申请日：1990-02-27
申请人： KENSETSUSHIYOU HOKURIKUCHIHOU , KUBOTA KK
发明人： KAMIMURA HIROSHI , NAKAGAWA TAKESHI , TAKAI KENICHI , MATSUI AKIO , NAKAMURA NORIMI , YAMAGUCHI TETSUO
IPC分类号： B60K17/10 , B62D11/04 , F16H59/06 , F16H61/4078 , F16H61/448 , F16H61/456 , F16H63/40
摘要： PURPOSE:To providing a safe working operation by providing a differential motion release control means for carrying out automatic speed governing control so as to change the running speed while preventing a vehicle body from obliquely moving due to a difference in drive speed between left and right running devices. CONSTITUTION:In order to change the running direction of a vehicle body, since a control change-over means 25 prevents a differential motion release control means 24 from operating, a difference in speed between first and second continuously variable transmissions can be obtained so that the vehicle body can be steered. In order to change the running speed of the vehicle body, the control change-over means 25 enables the differential motion release control means 24 to automatically adjust the manipulating speed of a manipulating section in accordance with data from a differential motion sensor S3 so that a difference in turning stroke between first and second manipulating sections does not produce, completely or subsantially completely. Accordingly, either during a desired period by which the running speed reaches a desired control speed or during progress of speed change, the first and second continuously variable transmissions change the speeds which can coincide with each other as far as possible.

4. 发明专利

JPH07264912A CONTROLLING MOWING HEIGHT BY GRASS MOWER 失效
公开(公告)号：JPH07264912A
公开(公告)日：1995-10-17
申请号：JP6053994
申请日：1994-03-30
申请人： KENSETSUSHO HOKURIKUCHIHOU KEN , KUBOTA KK
发明人： KAMIMURA HIROSHI , NAKAGAWA TAKESHI , NAOI SOICHI , YAMAGUCHI TETSUO , NAKAMURA NORIMI , FURUBAYASHI MITSUGI
IPC分类号： A01D34/54
摘要： PURPOSE:To avoid shaving off a rise portion, and abnormal wearing or beakage of cutter blades caused by running on the rise portion of working ground or other things, without requiring operator's labour. CONSTITUTION:In a control of mowing height of a grass mower equipped with a control means capable of keeping an angle thetaa of a lift arm to a specific angle thetab based on a information from a detecting means to detect the angle thetaa of the lift arm, this system is constituted by providing a pressure sensor for detecting an inner pressure of a lift cylinder, when a detected pressure value Ta detected by the pressure sensor becomes a specific initially set pressure value Tb or lower, controlling a function of the lift cylinder to elevate the mower until the detected pressure value Ta becomes higher than the specific value Tb, and after an elapse of specific time or specific length of travelling from a point of stopping the elevation of the mower, again controlling the function of lift cylinder to return the angle of lift arm to the previous specific angle.

5. 发明专利

JPH04197878A STEERING APPARATUS FOR WORKING VEHICLE 失效
公开(公告)号：JPH04197878A
公开(公告)日：1992-07-17
申请号：JP33455590
申请日：1990-11-29
申请人： KENSETSUSHIYOU HOKURIKUCHIHOU , KUBOTA KK
发明人： KAMIMURA HIROSHI , NAKAGAWA TAKESHI , TAKAI KENICHI , YAMAGUCHI TETSUO , NAKAMURA NORIMI , FURUBAYASHI MITSUGI
IPC分类号： A01B69/00 , B62D11/02 , B62D11/04
摘要： PURPOSE:To improve the operability by operating an artificially left and right operable turning member in the back-and-forth direction so as to enable selection of deceleration rotation and reverse rotation, and thereby continuously carrying out the operation from selection of the deceleration rotation and reverse rotation to a rightward/leftward turn operation. CONSTITUTION:The speed of right and left travel devices 1a, 1b when a manually operable member 16 of a transmitter 5 is at each of right and left operation stroke ends is made settable to any given different value between a first speed V lower than a travel speed VN when the operable member 16 is located at a neutral position N as viewed in its horizontal direction and a second speed V2 of the reverse rotation. Further, depending upon the operation position of the operable member 16 as viewed in the back-and-forth direction, the speeds of the right and left travel devices 1a, 1b at the right and left operation stroke ends of the operable member 16 are made selectable from between the speeds V1 and V2. Further, between the travel speed VN and a selected speed at the right or left operation stroke end, the speed of the right or left travel device 1a, 1b is made continuously low, or made elevatable in reverse rotation, so as to become equal to a speed corresponding to the right or left operation position of the operable member 16.

6. 发明专利

JPH04197104A MOWER WITH DEVICE FOR CONTROLLING REAPING HEIGHT 失效
公开(公告)号：JPH04197104A
公开(公告)日：1992-07-16
申请号：JP33199990
申请日：1990-11-28
申请人： KENSETSUSHIYOU HOKURIKUCHIHOU , KUBOTA KK
发明人： KAMIMURA HIROSHI , NAKAGAWA TAKESHI , TAKAI KENICHI , YAMAGUCHI TETSUO , NAKAMURA NORIMI , FURUBAYASHI MITSUGI
IPC分类号： A01B63/111 , A01D34/24 , A01D34/43 , A01D34/54 , A01D34/74
摘要： PURPOSE:To obtain the title mower continuously workable in excellent accuracy by connecting a mower through a link mechanism to a traveling machine body, raising the link mechanism by a lift arm having an inclination angle detecting means in an interlocking way and controlling rocking drive of the mower by a hydraulic cylinder. CONSTITUTION:In a mower equipped with a reaping height control device, the mower 4 is connected through a link mechanism 3 to a traveling machine body 2, the link mechanism 3 is raised in an interlocking way by a lift arm 18 to be vertically rocked and driven by a hydraulic cylinder 13 to freely drive the mower 4 up and down, the lift arm 18 is provided with a detecting means PM2 of discovering an inclination angle of the lift arm and a controlling means A to regulate drive of the hydraulic cylinder 13 so that the detected result of the detecting means PM2 is coincident with a previously manually set value by a setting means PM1 is installed to contract and expand the hydraulic cylinder 13 and to change and regulate reaping height of the mower 4.

7. 发明专利

JPH07264913A MOWING HEIGHT DETECTING DEVICE ON GRASS MOWER 失效
公开(公告)号：JPH07264913A
公开(公告)日：1995-10-17
申请号：JP6054094
申请日：1994-03-30
申请人： KENSETSUSHO HOKURIKUCHIHOU KEN , KUBOTA KK
发明人： KAMIMURA HIROSHI , NAKAGAWA TAKESHI , NAOI SOICHI , NAKAMURA NORIMI , YAMAGUCHI TETSUO , FURUBAYASHI MITSUGI
IPC分类号： A01D34/54
摘要： PURPOSE:To provide a mowing height detecting device on a grass mower, capable of conducting the precise control of a mowing height such as keeping the mowing height a constant by moving the mower according to an undulation of the working field. CONSTITUTION:In a mowing height detecting device on a grass mower having a mower 4 held by suspending as freely up and down, the device is constituted by installing each sled 22 to regulate descending of the mower 4 at the outside surfaces of both side walls 4a of mower deck 4B, providing a soil contacting body 24 in between the side wall 4a and the sled 22, as freely movable up and down and set as located at a higher position than the sled 22 at its most elevated state, also providing a detecting means S detecting amount of up and down displacement of the soil contact body 24, and linking the detecting means S to a control means capable of controlling elevating and descending of the mower 4 based on the detection by the detecting means S.

8. 发明专利

JPH03251112A MOWER WITH DEVICE FOR CONTROLLING CUTTING HEIGHT 失效
公开(公告)号：JPH03251112A
公开(公告)日：1991-11-08
申请号：JP4905890
申请日：1990-02-27
申请人： KENSETSUSHIYOU HOKURIKUCHIHOU , KUBOTA KK
发明人： KAMIMURA HIROSHI , NAKAGAWA TAKESHI , TAKAI KENICHI , ADACHI TADAO
IPC分类号： A01D34/64 , A01D34/54 , A01D34/74
摘要： PURPOSE:To obtain the title mower not damaging lawn on the ground and not making deep traveling track, by supporting weight of mower on rise and fall driving mechanism, making only a ground member move and follow on the earth and letting the ground member vertically fluctuate against the mower on undulations on the ground at the rear of the mower. CONSTITUTION:In the above-mentioned mower, weight of a mower 6 is supported on rise and fall driving mechanism 7 and only a ground member 13 moves on the earth and follows. The ground member 13 vertically fluctuates against the mower 6 on undulations on the ground at the rear of the mower 6 and in change of distance of the mower 6 from the ground by longitudinal inclination of a traveling body 2. When displacement of the ground material 13 comes off a set range, the mower 6 is driven to rise or fall in the direction of the displacement of the ground member 13. When the displacement of the ground member 13 is returned to the set range, the mower stops rise and fall and the mower 6 maintains height from the ground, namely reaping height in a set range. Reaping height can be controlled by changing and adjusting standard height of the ground member 13.

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