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公开(公告)号：JP2001303615A
公开(公告)日：2001-10-31
申请号：JP2000123086
申请日：2000-04-24
Applicant: KUBOTA KK
Inventor： AIKAWA TOKUHIRO , SUGAWARA SAKAE , KOTANI SATOSHI , FUJITA YUJI
Abstract: PROBLEM TO BE SOLVED: To prevent the formation of an opening, from which engine cooling air often leaks, between the top face of a weight and the lower edge of a bonnet in case of closing. SOLUTION: The weight 21 is installed at the rear section of the swivel base, the bonnet 9, in which an upper section is supported pivotally and which is opened and closed freely, is arranged on the upper side of the weight 21, the lower edge 9A of the bonnet 9 is positioned approximately along the top face 21A of the weight 21, and an abutting section 23 capable of abutting in case of the closing of the bonnet 9 is projected upwards to the top face 21A of the weight 21.
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公开(公告)号：JPH11336122A
公开(公告)日：1999-12-07
申请号：JP6391899
申请日：1999-03-10
Applicant: KUBOTA KK
Inventor： SATO NORITOSHI , TONO NOBUO , SUNADA MOTOTAKE , NASU HITOO , KAJIMOTO TAKESHI , NAKADA HIROO , AIKAWA TOKUHIRO
IPC: E02F9/00
Abstract: PROBLEM TO BE SOLVED: To mount and arrange a control valve in a narrow space in a compact configuration by reducing the mounting area of the control valve on a swivel base when the control valve having a plurality of valve discs arrayed in one direction for a backhoe is mounted on the swivel base. SOLUTION: A swivel base 4 rotationally movable around an axial center in a vertical direction is provided on a travelling device and a control valve 35 is provided on the swivel base 4 for controlling a hydraulic equipment. The control valve 35 is arranged in such a manner that a plurality of valve discs 35A are arrayed in one direction and in an almost vertical direction.
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公开(公告)号：JPH08246503A
公开(公告)日：1996-09-24
申请号：JP4726095
申请日：1995-03-07
Applicant: KUBOTA KK
Inventor： TANAKA HISAO , AIKAWA TOKUHIRO , NABEYA KIYOSHI
Abstract: PURPOSE: To simply and firmly mount a shading device, a body cover and auxiliary instruments on a supporting frame provided on a turntable, all together, ensure easy manufacturing in a simple structure and improve mounting strength. CONSTITUTION: An operating device, a shading device 8, an engine 12 and a body cover 13 to cover the engine 12 are mounted on a turntable 4 on a running machine base. A pipe structured supporting frame 11 U-shaped in a front view is provided across the engine 12 arranged at the rear of the turntable 4. Auxiliary instruments are fixed to the supporting frame 11 and the body cover 13 is mounted thereon so as to cover from the upper side. The column of the shading device 8 is fixed to the supporting frame 11 and a pivotally supporting tool 35 for a bonnet to cover the engine, at least at the rear, is fixed thereto.
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公开(公告)号：JP2002097664A
公开(公告)日：2002-04-02
申请号：JP2000289250
申请日：2000-09-22
Applicant: KUBOTA KK
Inventor： AIKAWA TOKUHIRO , SUGAWARA SAKAE , KOTANI SATOSHI , FUJITA YUJI , KUMAGAI AKIRA , SOEJIMA KO
Abstract: PROBLEM TO BE SOLVED: To enhance the controllability and maintainability of multiple valves inserted in a pilot circuit between a pilot valve and a control valve controlling hydraulic equipment in a backhoe and to enhance the connectability or the like of a hydraulic hose, etc. SOLUTION: In the backhoe, a revolving base is supported on a travel device in such a manner as to freely revolve about a vertical axis of revolution and the pilot valve is operated by use of an operating lever positioned near a driver' s seat on the revolving base, whereby the control valve is controlled by means of pilot pressure and the hydraulic equipment is controlled by the control valve. The operating lever can be operated in a plurality of operating directions; when operated in one of the operating directions, it enables operation of hydraulic equipment other than those operated when it is operated in the other operating directions. The multiple valves are inserted in the pilot circuit extending from the pilot valve to the control valve and a passage for pressure oil which extends from the pilot valve to the control valve can be varied by means of the multiple valves. The pilot valve is positioned within the revolving base in front of the driver's seat.
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公开(公告)号：JP2000352074A
公开(公告)日：2000-12-19
申请号：JP16729099
申请日：1999-06-14
Applicant: KUBOTA KK
Inventor： AIKAWA TOKUHIRO
Abstract: PROBLEM TO BE SOLVED: To surely inhibit a window plate from being moved toward a driver's seat even when external force is applied to the window plate. SOLUTION: A roof member 24 of synthetic resin roughly above a driver's seat to cover it is provided on a traveling vehicle, an opening 26 is formed in the roof member 23, and the opening 26 is closed by a window plate 27. The window plate 27 is formed to be one size larger than the opening 26 to be disposed on the outer side of the opening. An outer circumferential part of the window plate 27 is held by an elastic mounting body 28 installed on an inner circumferential edge of the opening 26, and the inner circumferential edge of the opening 26 is overlapped with the outer circumferential part of the window plate 27.
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Patent Agency Ranking
公开(公告)号：JP2000257113A
公开(公告)日：2000-09-19
申请号：JP6392099
申请日：1999-03-10
Applicant: KUBOTA KK
Inventor： AIKAWA TOKUHIRO , NASU HITOO , SATO NORITOSHI , KAJIMOTO TAKESHI , NAKADA HIROO , NABEYA KIYOSHI
IPC: E02F9/00
Abstract: PROBLEM TO BE SOLVED: To avoid interference with the other member, and enlarge a degree of freedom of the setting of a control valve by arranging so that one face of the control valve is in the form of inclination of a turning base capable of being vertically rotated around the center of a shaft provided on a traveling device. SOLUTION: A turning base 7 is rotatably supported around the center of the shaft of a vertical direction on a bearing body provided on the center between right and left crawler traveling bodies of a traveling device, and a working oil tank 24 and a control valve 25 are arranged in front of a hydraulic pump 23 in the right side of the turning base 7. Mainly, a plurality of valve bodies 25A provided on the control valve 25 driving and controlling a hydraulic instrument are arranged in the inclined direction for the vertical direction in regard to the arrangement direction. Thereby the control valve 25 can be compactly arranged in a narrow space, and the attaching area of the control valve 25 on the turning base 7 can be made constant regardless of the number of the valve bodies 25A. In addition, since the control valve 25 is inclined, interference with the other member can be avoided, and a degree of freedom of setting can be enlarged.
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公开(公告)号：JPH11269930A
公开(公告)日：1999-10-05
申请号：JP7625998
申请日：1998-03-24
Applicant: KUBOTA KK
Inventor： KATO YOSHIHIRO , AIKAWA TOKUHIRO , NABEYA KIYOSHI , NASU HITOO , SATO NORITOSHI , KAJIMOTO TAKESHI
Abstract: PROBLEM TO BE SOLVED: To provide a revolving working machine intended to improve an environment around its driver's seat and the maintainability of control valves and a hydraulic system. SOLUTION: A revolving working machine has a driver's seat 9 provided on one side of a revolving base 7 along the horizontal direction, and has a valve unit BU in which a number of control valves for controlling hydraulic equipment are aligned in one direction. In that case, the valve unit BU is placed at the front of the other side of the revolving base 7 along the horizontal direction in such a way that the control valves are aligned vertically. An operating oil tank 14 is placed behind the valve unit BU, and a hydraulic pump 13 is placed behind the operating oil tank 14.
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公开(公告)号：JPH11264154A
公开(公告)日：1999-09-28
申请号：JP6688998
申请日：1998-03-17
Applicant: KUBOTA KK
Inventor： NABEYA KIYOSHI , AIKAWA TOKUHIRO
IPC: E02F9/16
Abstract: PROBLEM TO BE SOLVED: To widen a space for treading on a pedal by preventing a space S in the vicinity of feet from being limited by a handrail. SOLUTION: The working machine has a driving section 16 with an operating section 15 disposed in upright from a machine body 13, a canopy installed so as to cover the upper section of the driving section 16 through a support 18 mounted on the machine body at the side place of the operating section 15 and an operating pedal 34 set up to the machine body 13 on the reverse side place to the support 18. The driving section 16 has a handrail 33, and the handrail 33 is extended from the support 18 to the operating section 15 side and reaches up to the end section of the operating section 15 on the operating pedal 34 side while being fitted so as to be connected to the upper section of the operating section 15 at that time.
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公开(公告)号：JP2877717B2
公开(公告)日：1999-03-31
申请号：JP4726095
申请日：1995-03-07
Applicant: KUBOTA KK
Inventor： TANAKA HISAO , AIKAWA TOKUHIRO , NABEYA KYOSHI
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公开(公告)号：JPH04209216A
公开(公告)日：1992-07-30
申请号：JP34067290
申请日：1990-11-30
Applicant: KUBOTA KK
Inventor： AIKAWA TOKUHIRO
IPC: E02F9/22
Abstract: PURPOSE:To promote operability by joining pressure oil of the second hydraulic pump of a main oil supply for an arm cylinder with a channel of the first hydraulic pump of a main oil supply for a boom cylinder by switching a channel selector valve connected with operation of a control lever. CONSTITUTION:A channel selector valve 10 to make changeover operation through an excitation circuit 17 is provided in the course of a pressure oil circuit L1 of the second hydraulic pump P2 to mainly supply oil to an arm cylinder C3. After that, when excavation work is carried out by a backhoe device, in the case a boom cylinder C1 only is operated by a boom lever only, operation is detected by the first limit switch to join pressure oil from the second hydraulic pump P2 through the excitation circuit 17 with a pressure oil supply circuit L3 of the first hydraulic pump P1 through a connection circuit L2 by means of the selector valve 10, and a driving speed of the boom cylinder C1 is increased. According to the constitution, working efficiency can be promoted.
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