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1. 发明专利

JP2001059237A SLEWING TYPE CONSTRUCTION MACHINE 失效
公开(公告)号：JP2001059237A
公开(公告)日：2001-03-06
申请号：JP23441899
申请日：1999-08-20
申请人： HITACHI CONSTRUCTION MACHINERY , HOKUETSU KOGYO CO
发明人： KOBORI SHINJI , SATO SHINICHI , SUGAYA MAKOTO , KUNO MAKOTO , TAKEUCHI YOSHIRO
IPC分类号： E02F9/00 , B66C23/44 , B66C23/84
摘要： PROBLEM TO BE SOLVED: To efficiently dispose an oil storage tank, to improve the degree of freedom of the arrangement of each equipment and to miniaturize a revolving super structure. SOLUTION: A battery 15 is positioned on the front side of an engine 8 and disposed on the right side of a tube 6A for a rotating cylinder 6, a hydraulic fluid tank 16 is disposed so as to cover the tube 6A base-end side of the rotating cylinder 6 and the upper side of the battery 15, and a fuel tank 18 adjoins the front side of the hydraulic fluid tank 16 and arranged so as to be crossed over the upper side of the front end side of the tube 6A of the rotating cylinder 6. Accordingly, the hydraulic fluid tank 16 can be disposed by utilizing a space on the upper side of the rotating cylinder 6 and the battery 15, and the fuel tank 18 can be arranged by utilizing a space on the upper side of the rotating cylinder 6. Thus, the battery 15, the hydraulic fluid tank 16, the fuel tank 18 or the like can be disposed efficiently on a revolving super structure.

2. 发明专利

JP2001040702A TURNING CONSTRUCTION MACHINE 失效
公开(公告)号：JP2001040702A
公开(公告)日：2001-02-13
申请号：JP21530299
申请日：1999-07-29
申请人： HITACHI CONSTRUCTION MACHINERY , HOKUETSU KOGYO CO
发明人： HIBIYA TAKESHI , KOBORI SHINJI , SUGAYA MAKOTO , TAKEUCHI YOSHIRO
IPC分类号： E02F9/00
摘要： PROBLEM TO BE SOLVED: To facilitate the switching operation of a pattern switching valve without using a special purpose tool and to efficiently dispose the pattern switching valve near an engine. SOLUTION: A pattern switching valve 49 is disposed while utilizing a large space in an engine room 43, so that even a small hydraulic backhoe can accommodate the pattern switching valve 49. A bonnet 42 for opening/closing the engine room 43 is provided with a hood opening/closing device 44 provided with a lock, so that the improvident switching operation of the pattern switching valve 49 can be prevented by fixing the bonnet 42 in the closed state. The switching operation of the pattern switching valve 49 can thereby be performed by a previously fitted switching lever 49B without preparing a special tool.

3. 发明专利

JP2001164599A TURNING CONSTRUCTION MACHINE 失效
公开(公告)号：JP2001164599A
公开(公告)日：2001-06-19
申请号：JP34798699
申请日：1999-12-07
申请人： HITACHI CONSTRUCTION MACHINERY , HOKUETSU KOGYO CO
发明人： SUGAYA MAKOTO , KOBORI SHINJI , HIBIYA TAKESHI , TAKEUCHI YOSHIRO
IPC分类号： E02F9/00 , B62D21/18
摘要： PROBLEM TO BE SOLVED: To decrease the temperature of the circumference of an engine and facilitate the control of a tail hose. SOLUTION: A silencer 32 provided on an exhaust pipe 28 is constituted to be provided on the contrary side of the engine 7 by sandwiching a radiator 10. Thereby the temperature of the circumference of the engine 7 can be prevented from increasing. In addition, since the silencer 32 is provided as a vertically putting state in which an axial line is a vertical line, the installed area of the silencer 32 is lessened to secure a space on the circumference of the silencer 32, and can cope with the design modification of the tail hose 34. Furthermore, since the silencer 32 is arranged in the lowermost downstream side of cooling wind by a cooling fan 8, the cooled wind before temperature increase by the heat of the silencer 32 can be supplied to the radiator 10 and an oil cooler 12.

4. 发明专利

JP2001055921A TURNING TYPE CONSTRUCTION MACHINE 失效
公开(公告)号：JP2001055921A
公开(公告)日：2001-02-27
申请号：JP23075399
申请日：1999-08-17
申请人： HITACHI CONSTRUCTION MACHINERY , HOKUETSU KOGYO CO
发明人： KOBORI SHINJI , SUGAYA MAKOTO , HIBIYA TAKESHI , TAKEUCHI YOSHIRO
IPC分类号： E02F9/22 , E02F9/00 , F01P5/02 , F01P11/08 , F15B11/00
摘要： PROBLEM TO BE SOLVED: To reduce a burden on an oil cooler to miniaturize the oil cooler by cooling hydraulic oil when the hydraulic oil flows through a return pipe. SOLUTION: In this construction machine, the downstream side of an oil cooler inflow side pipe 19 in a return pipe 18 for returning hydraulic oil from a multiple valve device to a hydraulic oil tank 13 is a rising pipe part 19C for heat radiation, while the rising pipe part 19C is disposed along the front face of a radiator 9 nearly perpendicularly to the flow direction of cooling air supplied from a cooling fan 7. Thereby, when the heated hydraulic oil is returned from the multiple valve device, the cooling air of the cooling fan 7 can cools the rising pipe part 19C for heat radiation. Accordingly, an oil cooler having small cooling capacity, i.e., a small-size oil cooler can be used to reduce a mounting space of the oil cooler.

5. 发明专利

JPH10252468A WORK MACHINE 失效
公开(公告)号：JPH10252468A
公开(公告)日：1998-09-22
申请号：JP7264197
申请日：1997-03-10
申请人： HITACHI CONSTRUCTION MACHINERY , HOKUETSU KOGYO CO
发明人： SUGAYA MAKOTO , SAEKI FUMIMASA , MINAMIYAMA EIJI , IWASHITA HIROSHI
IPC分类号： B60K11/04 , F01P5/06
摘要： PROBLEM TO BE SOLVED: To cool an equipment storing chamber and an engine room effectively by flowing cooling wind from the equipment storing chamber at lower side of a driver seat to the engine room at rear part. SOLUTION: An upper swivel member 2 has an equipment storing chamber 14 disposed in a turning frame 3 at lower side of a driver seat 4 and an engine room 21 in an engine cover 20 and a partition wall 19 blocks between them. A control valve 16 and the like are stored in the equipment storing chamber 14 and an intake port 25 is arranged in it. A vent port 26 is provided at the opposite side of longitudinal direction with a radiator 24 in the partition wall 19 and an exhaust port 27 is provided at the radiator 24 side in the engine cover 20. Cooling air introduced from the intake port 25 to the equipment storing chamber 14 by a cooling fan 23 is flown in the engine room 21 through the vent port 26 and discharged to outside from the exhaust port 27 in operation of the engine 22.

6. 发明专利

JP2003252066A SELF-PROPELLED WORKING MACHINE 审中-公开
公开(公告)号：JP2003252066A
公开(公告)日：2003-09-09
申请号：JP2002051851
申请日：2002-02-27
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： MATSUSHITA SHIN , TOYOOKA TSUKASA , SUGAYA MAKOTO
IPC分类号： B60K11/04 , B66F9/065 , B66F9/075
摘要： PROBLEM TO BE SOLVED: To efficiently cool an engine by blowing a large volume of outside air into an engine cover by utilizing the traveling wind. SOLUTION: Air inlets 22A-22G are formed in a front side 21A of an engine cover 21, and the air inlets 22A-22G are disposed closer to the axis B-B side in the right-to-left direction of a vehicle body 2 than to the imaginary line A extending along an inner side surface 5B of a right front wheel 5 when it is directed in the straight direction. Fender plates 23A, 23B and 23C are provided to suppress ingress of earth and sand stirred up by the right front wheel 5 when the right front wheel 5 is directed in the turning direction at the maximum right steering angle θR into the engine cover 21 through the air inlets 22A, 22B and 22C. A large volume of outside air can be taken into the engine cover 21 through the air inlets 22A-22G by utilizing the traveling wind when the vehicle body 2 is traveling, and the engine 11 can be efficiently cooled thereby. COPYRIGHT: (C)2003,JPO

7. 发明专利

JP2003138600A CONSTRUCTION EQUIPMENT 审中-公开
公开(公告)号：JP2003138600A
公开(公告)日：2003-05-14
申请号：JP2001334484
申请日：2001-10-31
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： SUGAYA MAKOTO , NISHIMURA KOJI , YAMADA KAZUNORI , MOTOZU MAKOTO , ISHIKAWA NAOHIRO , WATANABE OSAMU
IPC分类号： E02F9/00 , F04D29/60
摘要： PROBLEM TO BE SOLVED: To easily perform inspection work of a centrifugal fan and maintenance work to improve the workability. SOLUTION: A multiblade fan 16 is arranged above a radiator 20 and an oil cooler 21. Since the multiblade fan 16 is arranged at a position where a worker's hand reaches it easily in front of the worker, the inspection can be easily performed by visually inspecting an impeller 18 of the multiblade fan 16 and a driving motor 19, and the maintenance work such as cleaning work and the repair work required due to a failure can be efficiently performed by an easy attitude of the worker. Furthermore, since a cooling air duct 14 serves also as a rear face plate 13B of a hydraulic fluid tank 13 and partitions a cooling air passage 15, hydraulic fluid stored in the hydraulic fluid tank 13 can be cooled through the rear face plate 13B.

8. 发明专利

JP2002227244A SLEWING CONSTRUCTION EQUIPMENT 失效
公开(公告)号：JP2002227244A
公开(公告)日：2002-08-14
申请号：JP2001024388
申请日：2001-01-31
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： SUGAYA MAKOTO , KOBORI SHINJI , MATSUBARA TORU
IPC分类号： E02F9/00 , F01P7/10 , F01P11/10
摘要： PROBLEM TO BE SOLVED: To provide slewing construction equipment which can adjust an intake amount of cooling air sucked from an intake port, to thereby cool an engine cooling water, hydraulic fluid, a control valve, etc., in a well-balanced manner. SOLUTION: The slewing construction equipment is constructed such that a baffle 69 for applying intake resistant to the cooling air sucked from the rear-side intake port 63, is arranged in an sheathing cover 59 at a location opposed to the rear-side intake port 63 with an interval therebetween along a direction of the cooling air. Therefore, by changing the size of the baffle 69, or by changing the interval between the baffle 69 and the rear-side intake port 63 to change the intake resistance applied to the cooling air sucked from the rear-side intake port 63, the intake amount of the cooling air sucked from the rear-side intake port 63, and an intake amount of cooling air sucked from an opening 24A and a front-side intake port 68 are adjusted as appropriate, depending on the type of hydraulic shovel, the specification of the same, weather at the job site, etc.

9. 发明专利

JP2002061224A SLEWING TYPE CONSTRUCTION MACHINE 失效
公开(公告)号：JP2002061224A
公开(公告)日：2002-02-28
申请号：JP2000253622
申请日：2000-08-24
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： HIBIYA TAKESHI , KOBORI SHINJI , SUGAYA MAKOTO , KUNO MAKOTO
IPC分类号： E02F9/00 , B60K15/03 , B60K15/063 , F02M37/00 , F02M37/22
摘要： PROBLEM TO BE SOLVED: To improve the assembling workability and productivity by installing a hydraulic fluid tank, a fuel tank, etc., separately from the main frame. SOLUTION: A hydraulic fluid tank 45 and a fuel tank 52 are sub-assembled on a tank bracket 52 thereby forming a tank sub-assembly body 33, and the tank bracket 34 of the tank sub-assembly body 33 is assembled to the slewing frame 14 forming the main assembly body in the configuration. Thus, the sub- assembling work for assembling the hydraulic fluid tank 45, the fuel tank 52 or the like to the tank bracket 34 can be performed in a wide working area, thereby improving the assembling workability. Moreover the assembling work to the slewing frame 14 can be limited only to the fixation of the tank bracket 34 with bolts.

10. 发明专利

JP2003129523A CONSTRUCTION MACHINERY 审中-公开
公开(公告)号：JP2003129523A
公开(公告)日：2003-05-08
申请号：JP2001325441
申请日：2001-10-23
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： MOTOZU MAKOTO , NISHIMURA KOJI , YAMADA KAZUNORI , SUGAYA MAKOTO , ISHIKAWA NAOHIRO
IPC分类号： B66C23/74 , E02F9/16 , E02F9/18
摘要： PROBLEM TO BE SOLVED: To secure the great weight of a counterweight and mount a cab by using the counterweight. SOLUTION: The counterweight 38 is formed by having a height dimension large enough to be vertically extended from a revolving frame 11 to top surfaces 36B and 37B of left and right upper covers 36 and 37 which constitute an external facing cover 33. Thus, the great weight of the counterweight 38 can be secured, and a weight balance between the counterweight 38 and a working device 4 can be well maintained. The lower side of a rear part of the cab 32 is mounted on a canopy part 40B of an upper weight 40 which constitutes the counterweight 38, so that the cab 32 serving as a heavy load can be firmly supported by using the counterweight 38 without the use of a dedicated mount, etc.

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