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1. 发明专利

JPH10331200A REVOLVING TYPE CONSTRUCTION MACHINE 失效
公开(公告)号：JPH10331200A
公开(公告)日：1998-12-15
申请号：JP16050897
申请日：1997-06-03
申请人： HITACHI CONSTRUCTION MACHINERY , HOKUETSU KOGYO CO
发明人： IRINO TERUO , NISHIMURA KOJI , ENDO SHINICHIRO
IPC分类号： E02F9/18
摘要： PROBLEM TO BE SOLVED: To enhance the working effectiveness in the maintenance operation by facilitating the inspection, adjustment, and repair of a hydraulic pump. SOLUTION: The left-hand extension part 14B of a counterweight 14 formed in a circular arc is retreated from the position of a hydraulic pump 9, and a lower side cover 19 on the left is elongated backward till the left-hand extension part 14B of the counterweight 14 so as to cover the hydraulic pump 9 and is mounted on a revolving frame 3 removably. Thereby the condition that the pump 9 is exposed from the counterweight 14 can be generated by dismantling the lower side cover 19 on the left, so that it is possible to make insertion of the tool, mounting/removal of component part(s), etc., for inspection of oil leak and eventual readjustment and repair without requiring dismantlement of the counterweight 14.

2. 发明专利

JP2000291055A ROTARY CONSTRUCTION MACHINE 失效
公开(公告)号：JP2000291055A
公开(公告)日：2000-10-17
申请号：JP10068999
申请日：1999-04-07
申请人： HITACHI CONSTRUCTION MACHINERY , HOKUETSU KOGYO CO
发明人： MOTOZU MAKOTO , NISHIMURA KOJI , IWASHITA HIROSHI , ENDO SHINICHIRO
IPC分类号： E02F9/00 , E02F9/12
摘要： PROBLEM TO BE SOLVED: To shorten hydraulic pipes each connecting a hydraulic pump and a control valve to each other. SOLUTION: The rotary construction machine is constructed such that a rotary device 10 is arranged between a hydraulic pump 9 and a multi-valve device 13 and in the vicinity of a rotation center O, and that the rotary device 10 is provided with a pipe clamping device 16 for holding hydraulic pipes 15 connecting the hydraulic pump 9 and respective valves of the multi-valve device 13. By virtue of this construction, the hydraulic pipes 15 need not be bent in order to avoid the rotary device 10, whereby the length of each hydraulic pipe 15 can be shortened. As a result, the single pipe clamping device 16 attached to the rotary device 10 can positively hold a longitudinal intermediate portion of each hydraulic pipe 15, whereby the number of the pipe clamping devices can be reduced compared with that in a prior art technique.

3. 发明专利

JP2000064354A CONSTRUCTION MACHINE 失效
公开(公告)号：JP2000064354A
公开(公告)日：2000-02-29
申请号：JP25050898
申请日：1998-08-20
申请人： HITACHI CONSTRUCTION MACHINERY , HOKUETSU KOGYO CO
发明人： YAMADA KAZUNORI , NISHIMURA KOJI , IWASHITA HIROSHI , ENDO SHINICHIRO
IPC分类号： E02F9/16 , B60J7/00 , B62D25/06 , B62D33/06
摘要： PROBLEM TO BE SOLVED: To damp the vibrations of a canopy roof by increasing the bearing rigidity of the canopy roof by left-right supports. SOLUTION: Left-right supports 10, 10 formed in an L shape are installed by vertical columns 11 and horizontal columns 12 extended to a front from the upper sides of the vertical columns 11, and a canopy roof 16 is borne by the horizontal columns 12 extending over a wide range in the front and rear direction by mounting the canopy roof 16 on the horizontal columns 12, 12 of these each support 10, 10. Accordingly, the bearing rigidity of the canopy roof 16 by the left-right supports 10, 10 is increased, and the flapping vibrations of the canopy roof 16 due to the vibrations of a hydraulic backhoe is prevented.

4. 发明专利

JP2000054429A HYDRAULIC WORKING MACHINE 失效
公开(公告)号：JP2000054429A
公开(公告)日：2000-02-22
申请号：JP22729498
申请日：1998-08-11
申请人： HOKUETSU KOGYO CO , HITACHI CONSTRUCTION MACHINERY
发明人： TANIGAWA KATSUMI , NISHIMURA KOJI
IPC分类号： E02F9/00 , E02F9/08
摘要： PROBLEM TO BE SOLVED: To restrain influenence of the heat and the operating sound of a valve on an operation room and facilitate maintenance inspection of piping by arranging a receiving room receiving a hydraulic oil tank and a control valve, and a receiving body forming the operation room on a base. SOLUTION: On the position where a control valve 20 and an operation room 16 do not overlap with each other, a hydraulic oil tank 25 is arranged between the valve 20 and the operation room 16. The tank 25 stores hydraulic oil cooled after being discharged from the valve 20. Hence, the heat and the operating sound generated in the valve 20 are insulated by the hydraulic oil, and they are hardly transmitted to the operation room 16. The valve 20 is arranged on the inner wall of an upper turning body 12 opposite to a piping connected side face 20a, and the valve 20, the piping, and the like can be inspected from the outside. Further an opening part and an opening/closing door are provided on the side wall of a cover 13 opposite to the connected side face 20a, to facilitate maintenance inspection of the valve 20. Hereby, the maintenance inspection is facilitated, and environment in the operation room can be made favorable.

5. 发明专利

JPH10331657A CIRCULAR CONSTRUCTION MACHINE 失效
公开(公告)号：JPH10331657A
公开(公告)日：1998-12-15
申请号：JP16050597
申请日：1997-06-03
申请人： HITACHI CONSTRUCTION MACHINERY , HOKUETSU KOGYO CO
发明人： KUNO MAKOTO , NISHIMURA KOJI , IWASHITA HIROSHI , ENDO SHINICHIRO
IPC分类号： E02F9/16 , B60K11/04 , F02B77/00
摘要： PROBLEM TO BE SOLVED: To prevent breakage of a radiator even in the case when a roof support member is deformed as well as to support the radiator by the roof support member. SOLUTION: This construction machine is provided with a fragile bracket 21 between a right front leg body 19 of a canopy support member 16 and a radiator 9, and the fragile bracket 21 is formed fragile so as to constantly support the radiator 9 against the canopy support member 16, to deform or to be broken when large external force works. Consequently, it is possible to prevent oscillation of the radiator 9 by supporting the radiator 9 by the fragile bracket 21 at the normal time of travelling and working. In the meantime, it is possible to prevent breakage of the radiator 9 by deforming or breaking the fragile bracket 21 in the case when large external force works on a canopy 25 due to contact with an obstruction and overturning and the canopy support member 16 is deformed.

6. 发明专利

JPH09189049A CONNECTION STRUCTURE OF HYDRAULIC HOSE FOR WORKING MACHINE 失效
公开(公告)号：JPH09189049A
公开(公告)日：1997-07-22
申请号：JP244996
申请日：1996-01-10
申请人： HITACHI CONSTRUCTION MACHINERY , HOKUETSU KOGYO CO
发明人： SAKUMA NORIMITSU , ASAKURA NOBUKATSU , NISHIMURA KOJI , IRINO TERUO , SAKAGAMI SHINICHI
IPC分类号： E02F9/00
摘要： PROBLEM TO BE SOLVED: To suppress a hydraulic hose from being twisted due to oscillation of a swing post. SOLUTION: A hydraulic hose 12 is fixed to a boom 1, and a space part 20 to allow a horizontal relative movement of a hose part of a hydraulic hose 12 near the upper part 8 of a frame 1 which follows the oscillation of a swing post 15 is provided at the upper side part 8 of a frame 1 located on the rear lower side of the swing post 15. Also a space part 21 to allow a horizontal relative movement of the hose part of the hydraulic hose 12 located near the rear part of the swing post 15 which follows the oscillation of the swing post 15 is provided at the rear part of the swing post 15 located just over the space 20. These spaces 20 and 21 are oval holes along the oscillating locus 15a of the maximum radius 15b of the swing post 15, and these oval holes are arranged in an area between the oscillating locus 15a and oscillating center 17a.

7. 发明专利

JP2000291061A CONSTRUCTION MACHINE 失效
公开(公告)号：JP2000291061A
公开(公告)日：2000-10-17
申请号：JP10068799
申请日：1999-04-07
申请人： HITACHI CONSTRUCTION MACHINERY , HOKUETSU KOGYO CO
发明人： MOTOZU MAKOTO , NISHIMURA KOJI , YAMADA KAZUNORI , IWASHITA HIROSHI
IPC分类号： E02F9/00 , B60K25/02 , F15B1/26
摘要： PROBLEM TO BE SOLVED: To improve the working efficiency of a construction machine when a suction filter of a hydraulic oil tank is to be exchanged, to thereby alleviate the burden of an operator. SOLUTION: A hydraulic oil tank 9 is set on the right side of a revolving frame 4, and a suction pipe 12 for introducing hydraulic oil in a tank body 10 to a suction side of a hydraulic pump is attached onto a rear plate 10B of the tank body 10. Further, a suction filter 13 is attached onto an opening end 12A side of the suction pipe 12, and a filter exchanging window is perforated in a front plate 10A of the tank body 10, which window is covered by a cover body 15. A fixture 17 formed of a rod 18 and a supporting bracket 19 is arranged between the suction filter 13 and the cover body 15, and the suction filter 13 is fixed to the opening end 12A of the suction pipe 12 so as to be prevented from slipping out, by means of the fixture 17.

8. 发明专利

JPH1150492A SLEWING TYPE CONSTRUCTION EQUIPMENT 失效
公开(公告)号：JPH1150492A
公开(公告)日：1999-02-23
申请号：JP16934598
申请日：1998-06-02
申请人： HITACHI CONSTRUCTION MACHINERY , HOKUETSU KOGYO CO
发明人： IRINO TERUO , NISHIMURA KOJI , ENDO SHINICHIRO
IPC分类号： E02F9/00 , E02F9/16
摘要： PROBLEM TO BE SOLVED: To improve workability by carrying out getting-on-and-off to and from a driver's seat even on a narrow job site. SOLUTION: A walk-through 12 is installed while being extended in the longitudinal direction in a space being placed on the side face section 6E of a left cover 6 in an engine cover 6 and on the left side of the left side face section 10D of a cabin cover 10 and on the left floor plate section 8B of a floor plate 8. Accordingly, passing-through in the front and the rear of a revolving super structure 2 is carried out even on a narrow job site by passing through the walk-through 12. A door is opened in the walk-through 12 without a collision against the wall, etc., of the job site of the door, and getting-on-and-off to and from a driver's seat can be conducted.

9. 发明专利

JPH10181646A CRAWLER BELT 失效
公开(公告)号：JPH10181646A
公开(公告)日：1998-07-07
申请号：JP35719796
申请日：1996-12-26
申请人： HITACHI CONSTRUCTION MACHINERY , HOKUETSU KOGYO CO
发明人： SAKUMA NORIMITSU , MIZUSHIMA HIROSHI , NISHIMURA KOJI , TANIGAWA KATSUMI
IPC分类号： B62D55/20
摘要： PROBLEM TO BE SOLVED: To make a structure simple and lightweight by attaching rubber pads directly to small link members. SOLUTION: A mounting plate 43 extending in the right and left direction from a link member 42 is provided on each link member 42 and a bolt through hole 43A for mounting a rubber pad 44 is bored in both end sides of the mounting plate 43. Therefore, a sufficient space for mounting or dismounting a bolt 47 can be ensured around each bolt through hole 43A of the mounting plate 43 and the rubber pad 11 can be mounted on the mounting plate 43 by each bolt 47.

10. 发明专利

JPH09268599A SWING TYPE HYDRAULIC SHOVEL 失效
公开(公告)号：JPH09268599A
公开(公告)日：1997-10-14
申请号：JP1555797
申请日：1997-01-29
申请人： HITACHI CONSTRUCTION MACHINERY , HOKUETSU KOGYO CO
发明人： YAMADA KAZUNORI , KOBORI SHINJI , NISHIMURA KOJI
IPC分类号： E02F3/32 , E02F9/00 , E02F9/08
摘要： PROBLEM TO BE SOLVED: To provide a hydraulic shovel keeping the reduction of the upper cover volume to the minimum and lessening the gyratory radius in the minimum gyratory posture of the front. SOLUTION: A curved part 45 is provided with a recessed face 45A having the center axis at the axial center (m) of the vertical pin of the swing post 4, the first level difference part 45B forming a nearly constant clearance against the track made by the rear projection of the swing post during the swing motion of the working front 5, and the second level difference part 45C having a nearly horizontal face for a scaffold. The recessed face 45A spread along the track made by the rear face of the boom 16 when swinging the working front 5 at the minimum gyratory posture of the front, to form a clearance from the track. The first level difference part 45B is provided with a curved face forming a nearly constant clearance from the track made by the rear projection during the swing motion of the working front 5 and a nearly horizontal face forming a nearly constant clearance from the track made by the lower end of the rear projection during the swing motion of the working front 5.

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