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1. 发明专利

JPH10257811A CUTTING HEIGHT CONTROLLER OF MOWER 失效
公开(公告)号：JPH10257811A
公开(公告)日：1998-09-29
申请号：JP6587697
申请日：1997-03-19
申请人： KENSETSUSHO HOKURIKUCHIHOU KEN , KUBOTA KK
发明人： WATABE TOSHIO , FURUKAWA TAKAHIDE , SATO MASAKI , NAKAMURA NORIMI , YAMAGUCHI TETSUO , FURUBAYASHI MITSUGI
IPC分类号： A01D34/54 , A01B63/10 , A01D34/64
摘要： PROBLEM TO BE SOLVED: To provide a remote control-type mower by which reduction in mower pitching in a cutting surface is suppressed and excellent cutting performance is showed by correctly following the cutting surface. SOLUTION: The cutting height controller is provided with an electromagnetic proportion pressure reducing valve 13 capable of linearly changing-over the lift-up pressure of a lift cylinder 9 which elevates/lowers the mower 4 from zero pressure to fixedly raised pressure, fixedly raised pressure is given to the lift cylinder 9 and cutting work is executed in a floating state where the mower 4 is slightly floated from the ground. Variable resistor for setting raised pressure is operated while viewing the degree of the work traveling speed of a traveling machine body 1 and also the projection/recession of the cutting surface so as to execute mowing work by cutting height which meets the cutting surface in configuration.

2. 发明专利

JPH10257815A DEVICE FOR DETECTING SPEED OF MOWER 失效
公开(公告)号：JPH10257815A
公开(公告)日：1998-09-29
申请号：JP6587797
申请日：1997-03-19
申请人： KENSETSUSHO HOKURIKUCHIHOU KEN , KUBOTA KK
发明人： WATABE TOSHIO , FURUKAWA TAKAHIDE , SATO MASAKI , NAKAMURA NORIMI , FURUBAYASHI MITSUGI , YAMAGUCHI TETSUO
IPC分类号： A01D34/86 , A01D34/47 , B60K17/10 , G01P3/488
摘要： PROBLEM TO BE SOLVED: To provide a remote control-type mower by which advance traveling is correctly controlled in an inclined place. SOLUTION: A mower speed detecting device is constituted in such a way that a planetary gear speed changing mechanism 33 for driving crawler traveling devices is fitted to one end of the output shaft 28 of driving motors M1 and M2 in a static hydraulic continuously variable transmission which respectively drives a pair of left and right crawler traveling devices, a gear 38 for detecting direct rotary speed is fitted to the other end of the output shaft 28, an electromagnetic pickup mechanism 40 is disposed in a position opposed to the gear 38, the actual speed of the crawler traveling devices is detected, speed difference between the right and left crawler traveling devices is finely set based on detection speed and advance work traveling in the inclined place is excellently executed.

3. 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.

4. 发明专利

JPH10257802A RADIO CONTROL DEVICE OF WORK MACHINE 失效
公开(公告)号：JPH10257802A
公开(公告)日：1998-09-29
申请号：JP6587597
申请日：1997-03-19
申请人： KENSETSUSHO HOKURIKUCHIHOU KEN , KUBOTA KK
发明人： WATABE TOSHIO , FURUKAWA TAKAHIDE , SATO MASAKI , YAMAGUCHI TETSUO , NAKAMURA NORIMI , FURUBAYASHI MITSUGI
IPC分类号： A01B69/00 , A01D34/43
摘要： PROBLEM TO BE SOLVED: To evade a phenomenon that a machine body is traveled against the intention of a worker at the time of starting work in a radio control-type mower. SOLUTION: A transmitter 41 is provided with a switch for transmitting a signal from the transmitter 41 to a receiver 32 at a machine body side so as to change speed in a speed changing device and a restricting means S is disposed at a receiver 32 side, which discriminates the operation position of the speed change stick of the transmitter when the switch is ON-operated after starting the engine of the machine body and prevents the operation of a speed changing system for changing speed in the speed changing device when it is discriminated that the operation position is in a speed changing position for traveling the machined body.

5. 发明专利

JPH1033037A REAPER 失效
公开(公告)号：JPH1033037A
公开(公告)日：1998-02-10
申请号：JP19736196
申请日：1996-07-26
申请人： KENSETSUSHO HOKURIKUCHIHOU KEN , KUBOTA KK
发明人： WATABE TOSHIO , ABE HIDEAKI , MAEHARA MASAYUKI , NAKAMURA NORIMI , YAMAGUCHI TETSUO , FURUBAYASHI MITSUGI
IPC分类号： A01D34/62 , A01D34/68
摘要： PROBLEM TO BE SOLVED: To prevent scattering of small stones, etc., from openings of a housing while keeping a reaper to have no difficulties in operation. SOLUTION: This mower has a mowing device A which has a flail mower structure, mows weeds, etc., by rotating a hung cutting blade at a high speed in a housing 8 and is connected to be able to ascend and descend in a front part of a traveling machine body. In this case, main rubber flaps 11a, 12, 13a capable of closing main openings Sm for introducing weeds at the lower part of the front wall 8a of the housing and auxiliary rubber flaps 11b and 13b capable of closing auxiliary openings Ss at the lower front part of left and right sidewalls 8c and 8d are installed. Left and right ends of the left and right main rubber flaps 11a and 13a and the front parts of the auxiliary rubber flaps 11b and 13b are unitedly formed to make no gaps at corner parts.

6. 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.

7. 发明专利

JP2559897B2 失效
公开(公告)号：JP2559897B2
公开(公告)日：1996-12-04
申请号：JP24983690
申请日：1990-09-18
申请人： KUBOTA KK
发明人： NAKAMURA NORIMI , FUJIWARA KOJI , MATSUI AKIO
IPC分类号： A01D34/63 , A01D34/70

8. 发明专利

JPH0837810A HYDRAULIC CIRCUIT FOR WORKING VEHICLE 失效
公开(公告)号：JPH0837810A
公开(公告)日：1996-02-13
申请号：JP18203894
申请日：1994-08-03
申请人： KUBOTA KK
发明人： NAKAMURA NORIMI , FURUBAYASHI MITSUGI , YAMAGUCHI TETSUO
IPC分类号： A01D34/54 , A01B59/048 , A01B63/10 , B60R16/08
摘要： PURPOSE:To provide a hydraulic circuit capable of easily pushing a lift arm down on installing a working device, in spite of having a circuit constitution allowing a high back pressure in a hydraulic cylinder to elevate and descend the working device so as to conduct the installing work of the working device by only one worker. CONSTITUTION:In the hydraulic circuit for a working vehicle provided with a first hydraulic circuit part A controlling the extension and contraction of a single acting type hydraulic cylinder 9 for elevating or descending a working device 4 and a second hydraulic circuit part B controlling each left and right hydraulic motors M1 and M2 driving a left and right pair of running devices 5, in which the first hydraulic circuit part A is connected and made to communicate with the second hydraulic circuit part B through a hydraulic passage R5, and is prvided with a relief valve 20 for setting up a charge pressure, a supporting drain hydraulic passage R7 equipped with an automatic shut-off type opening and closing valve 22 capable of being opened by human operation at the side of an upstream direction of a hydraulic oil flow against the relief valve 20 in the first hydraulic circuit part A is connected and made to communicate with the circuit part A.

9. 发明专利

JPH089742A MOWING DEVICE CONNECTING STRUCTURE FOR WORKING MACHINE 失效
公开(公告)号：JPH089742A
公开(公告)日：1996-01-16
申请号：JP15406894
申请日：1994-07-06
申请人： KUBOTA KK
发明人： NAKAMURA NORIMI , YAMAGUCHI TETSUO
IPC分类号： A01B59/048 , A01B63/10 , A01D34/43 , A01D34/86 , A01D67/00
摘要： PURPOSE:To excellently maintain right and left weight balance in traveling by sliding a mowing device together with a link mechanism right and left based on the main body of a working machine in a state in which the link mechanism is bent and the mowing device is housed laterally in the machine body. CONSTITUTION:A mowing device 3 is connected through a link mechanism 2 capable of being laterally expanded and contracted and driven to a main body X of a working machine so as to change the position of the mowing device and to lift and lower it. A sliding mechanism S to change/fix a relative position between the main body X of a working machine and the link mechanism 2 in the width direction of the main body X of a working machine is laid between both the main body and the mechanism.

10. 发明专利

JPH06168024A WORK VEHICLE GUIDE DEVICE USING BEAM LIGHT 失效
公开(公告)号：JPH06168024A
公开(公告)日：1994-06-14
申请号：JP31915992
申请日：1992-11-30
申请人： KUBOTA KK
发明人： YOSHIKAWA KOJI , FUJII YASUO , NAKAMURA NORIMI
IPC分类号： A01B69/00 , G05D1/02
摘要： PURPOSE:To make a work vehicle precisely transfer to an adjacent process by projecting the beam light of plural work processes in a state having information for process identification, and discriminating whether the work process is the accurate one to be worked next based on information for identifying the beam light which the light-receiving means of the work vehicle receives. CONSTITUTION:Beam light projecting means 5 projecting the beam light for guidance from one end side of the work process to the other end side are provided for the respective work processes which are mutually parallel. The light- receiving means 8 receiving the beam light and control means controlling the work vehicle 1 so that it automatically travels along the work processes based on light-receiving information of the light-receiving means 8 are provided for the work vehicle 1. The beam light projecting means 5 are constituted to project the beam light by superposing respectively different information with them in the plural work processes, and the control means discriminate the work processes based on identification information. Thus, an operation for transferring to the adjacent process can precisely be executed.

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