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1. 发明专利

JP2000204590A SEALING STRUCTURE OF CONSTRUCTION MACHINE 失效
公开(公告)号：JP2000204590A
公开(公告)日：2000-07-25
申请号：JP629999
申请日：1999-01-13
申请人： YUTANI JUKO KK , KOBE STEEL LTD
发明人： SAITO SHIGEAKI , CHIKUANA TAKASHI
IPC分类号： E02F9/00 , B60K11/04 , F01P3/18
摘要： PROBLEM TO BE SOLVED: To ensure good built-up efficiency as well as the stable securement of sealing efficiency of a sealing member fixed to the peripheral surface of an air conditioner in an engine room of a construction machinery. SOLUTION: This sealing structure of a construction machine is equipped with an engine, a cooling fan mounted to the engine, a first cooling device set by meeting the cooling fan, a second cooling device set in parallel with the first cooling device, an engine room storing the engine therein and a sealing member for closing between at least a side section of the first cooling device and a wall surface forming section of the engine room meeting the side section and, at the same time, piping member for supplying and discharging the cooling objective fluid to the second cooling device is made to pass around below the side of the first cooling device. Then, the sealing member includes first sealing members 40a, 40b and 40c fixed to at least the side section of the first cooling device and a second sealing member 41 forming insertion grooves 42 for inserting the piping member and, at the same time, fixing one side to the wall surface forming section, and the first sealing members and second sealing member are so formed that the other side of the second sealing member and upper surface are in a state to adhere to the first sealing members 40a, 40b and 40c.

2. 发明专利

JPH1193665A ENGINE COOLING DEVICE 失效
公开(公告)号：JPH1193665A
公开(公告)日：1999-04-06
申请号：JP27372097
申请日：1997-09-18
申请人： YUTANI JUKO KK , KOBE STEEL LTD
发明人： SAGI KAZUYUKI , CHIKUANA TAKASHI , IWAMITSU HIROAKI , SAITO SHIGEAKI , FUJIOKA KEIJI
IPC分类号： F01P7/04 , F01P7/08
摘要： PROBLEM TO BE SOLVED: To effectively cool an engine in response to the operating environment by providing a rotary transmitting means, which can change the number of revolution of fan, between a driving shaft and a fan of an engine so that the rotary transmissibility of this rotary transmitting means can be adjusted from outside by a transmissibility setting means. SOLUTION: A fluid joint (liquid coupling) 5 as a rotary transmitting means is interposed between a fan driving shaft 3 and a fan 4, and rotary transmissibility of this fluid joint 5 can be changed by a regulator as a slip rate setting means. Namely, in the regulator 10, an adjustment operating part 11 is manually operated so as to turn a valve plate 38 of the regulator 10 for adjustment, and the slip ratio of the fluid joint 5 can be changed, and the number of revolution of the fan 4 can be freely set to the predetermined number of revolution. In the adjustment operating part 11, when a pointer is adjusted to a scale value 0, the valve plate 38 closes an oil port 36 of a separate plate 35, and the rotary transmissibility is regulated to 0, and rotation of the fan 4 is stopped.

3. 发明专利

JPH11123940A COOLING DEVICE FOR CONSTRUCTION MACHINE 失效
公开(公告)号：JPH11123940A
公开(公告)日：1999-05-11
申请号：JP22191898
申请日：1998-08-05
申请人： YUTANI JUKO KK , KOBE STEEL LTD
发明人： CHIKUANA TAKASHI , SAKAEDA AKIHIKO , SAGI KAZUYUKI , IWAMITSU HIROAKI , FUJIOKA KEIJI
IPC分类号： E02F9/00 , B60K11/04 , F01M5/00 , F01P11/08 , F01P11/10 , F28F9/00 , F28F9/02
摘要： PROBLEM TO BE SOLVED: To easily and completely clean a radiator. SOLUTION: In a cooling device for a construction machine arranged inside an upper turning body 13 and having an oil cooler 3, a radiator 4 and a fan shroud 5, the oil cooler 3 and the fan shroud 5 are integrally connected and fixedly attached to the upper turning body 13, and the radiator 4 is detachably attached to the turning body 13 via the cooler 3 and the fan shroud 5 integrally connected.

4. 发明专利

JPH1193671A ENGINE COOLING DEVICE 失效
公开(公告)号：JPH1193671A
公开(公告)日：1999-04-06
申请号：JP27372197
申请日：1997-09-18
申请人： YUTANI JUKO KK , KOBE STEEL LTD
发明人： SAITO SHIGEAKI , SAGI KAZUYUKI , CHIKUANA TAKASHI , IWAMITSU HIROAKI , FUJIOKA KEIJI
IPC分类号： B60K11/04 , F01P11/10
摘要： PROBLEM TO BE SOLVED: To provide an engine cooling device capable of securing the required wind capacity by minimum fan torque through a process of making the flow of air on the fan front surface side into the straight flow. SOLUTION: The distance size L2 between the front surface of a fan 7 attached to an engine 1 and the rear surface of a radiator core 16 facing the fan 7 is set in the range of two times to three times of the fan thickness M as seen from the side, and the inclination angle α of the conical surface in the conical space part formed by linking an intersection at which an extension of a driving axis of a fan driving shaft 6 intersects the rear surface of the radiator core 16 to the outer peripheral circle of the fan hub 9 of the fan 7 is set in the range of 25 deg. to 35 deg..

5. 发明专利

JP2000248934A EXHAUST PIPE FOR CONSTRUCTION MACHINE 失效
公开(公告)号：JP2000248934A
公开(公告)日：2000-09-12
申请号：JP4685099
申请日：1999-02-24
申请人： YUTANI JUKO KK , KOBE STEEL LTD
发明人： YAMASHITA KOICHI , CHIKUANA TAKASHI
IPC分类号： E02F9/00 , B60K13/04 , F01N13/20 , F01N7/20
摘要： PROBLEM TO BE SOLVED: To reduce a noise of air current by converting (straightening) a turbulence generated in a curved pipe part into a laminar flow, though having the curved pipe part. SOLUTION: A curved pipe part 12 for preventing infiltration of rainwater is provided in the tip end of a vertical pipe part 11 extended to an upward direction from a muffler M of an engine, also a straightening part of straight pipe shape is provided in the tip end of the curved pipe part 12, and a turbulence generated therein is changed into a laminar flow by the straightening part 13 to be discharged to the outside.

6. 发明专利

JPH11241370A POWER PART STRUCTURE FOR CONSTRUCTION MACHINE 失效
公开(公告)号：JPH11241370A
公开(公告)日：1999-09-07
申请号：JP6068598
申请日：1998-02-24
申请人： YUTANI JUKO KK , KOBE STEEL LTD
发明人： SAGI KAZUYUKI , CHIKUANA TAKASHI , IWAMITSU HIROAKI , SAITO SHIGEAKI
IPC分类号： E02F9/00
摘要： PROBLEM TO BE SOLVED: To provide a power part structure to cover the rotation exposure side of a pulley, and a belt. SOLUTION: This device is provided with an engine, a rotation transmitting means to transmit rotation of an engine rotation shaft, and an accessary equipment having a drive shaft 45 driven to rotate by the rotation transmitting means. It is also provider with a radiator disposed to face an inner fan of the accessary equipment, a fan guard fixed to the radiator to surround the fan, and a cover fixed to the engine to surround at least a part of the rotation transmitting means.

7. 发明专利

JPH1182053A EQUIPMENT MOUNTING STRUCTURE OF CONSTRUCTION EQUIPMENT 失效
公开(公告)号：JPH1182053A
公开(公告)日：1999-03-26
申请号：JP24987997
申请日：1997-08-29
申请人： YUTANI JUKO KK , KOBE STEEL LTD
发明人： SAKAEDA AKIHIKO , SAGI KAZUYUKI , CHIKUANA TAKASHI , YAMASHITA KOICHI , IWAMITSU HIROAKI , FUJIOKA KEIJI
IPC分类号： E02F9/00 , B60K5/12 , F02B65/00 , F02B77/00
摘要： PROBLEM TO BE SOLVED: To intensively mount various equipments and improve the assembling property by fixing an engine to a frame through an equipment mounting bracket, and providing, on the equipment mounting bracket, an equipment mounting part for mounting various equipments to be loaded on an equipment frame. SOLUTION: Equipment mounting brackets 17 are fixed and mounted on a plurality of support mounting parts of an engine to connect an engine connecting frame 11F fixed to the center frame of a revolving superstructure to the brackets through cushioning members 18. The compressor 21 and stepping motor 24 installed to the revolving superstructure are fastened and fixed to the equipment mounting brackets 17. Thus, the equipment layout within the revolving superstructure can be made compact, the room of the internal space can be increased, and the assembling property can be also improved since various equipments can be intensively mounted.

8. 发明专利

JPH1172101A RETURN OIL CIRCUIT DEVICE OF HYDRAULIC CYLINDER 失效
公开(公告)号：JPH1172101A
公开(公告)日：1999-03-16
申请号：JP24937397
申请日：1997-08-28
申请人： YUTANI JUKO KK , KOBE STEEL LTD
发明人： OKAMURA TSUNENOBU , SAGI KAZUYUKI , CHIKUANA TAKASHI , YAMAGUCHI KAZUYOSHI
IPC分类号： F15B11/00
摘要： PROBLEM TO BE SOLVED: To reduce pressure drop of a return oil from an oil chamber on head side by opening and communicating both of a main return oil passage and a branched return oil passage of a direction change-over valve at the time of shrinkage operation of a hydraulic cylinder. SOLUTION: When pilot pressure is applied from a pilot port 30R at the time of shrinkage operation of a hydraulic cylinder 27, a main spool 29a moves at a stroke in the arrow (b) direction. A main return oil passage 34L on head side and a tank communicating passage 36L on head side in a direction change-over valve 28a are opened and communicated mutually through an annular outer peripheral groove 41, and a branched return oil passage 40 is opened and communicated through an annular outer peripheral groove 42. When hydraulic oil from a hydraulic pump 15 is supplied to an oil chamber on rod side 27b of the hydraulic cylinder 27, return oil from an oil chamber on head side 27b is returned to a hydraulic oil tank 16 through a main return oil passage 22, the main return oil passage on head side 34L, and the annular outer peripheral groove 41 at the same time. The return oil branched from the main return pipe passage 22 returns into the hydraulic oil tank 16 through a branched return pipe passage 24 and the branched return oil passage 40 which is opened and communicated.

9. 发明专利

JP2000233651A EXHAUST STRUCTURE FOR CONSTRUCTION MACHINE 失效
公开(公告)号：JP2000233651A
公开(公告)日：2000-08-29
申请号：JP3768599
申请日：1999-02-16
申请人： KOBE STEEL LTD , YUTANI JUKO KK
发明人： KOBAYASHI TOSHIYUKI , ODA TAKESHI , CHIKUANA TAKASHI
IPC分类号： B60K11/04 , F01P11/10
摘要： PROBLEM TO BE SOLVED: To prevent an electrical equipment or the like in the vicinity of a cooling fan from being exposed in rain and snow, and decrease turbulence and noise generated in an engine room. SOLUTION: In an exhaust structure for a construction machine taking in cooling air into an engine room by a suction type cooling fan rotated by an engine, and exhausting the cooling air to outside the engine room from an exhaust port 2f after cooling a radiation equipment of radiator or the like, the exhaust port 2f is formed in an engine room peripheral wall in a separated position in the downstream of a flow of cooling air relating to the cooling fan 5, a cooling air guide 11 is provided between this exhaust port 2f and an external peripheral part of the cooling fan 5, and a sloped surface 11a changing a flow of cooling air released by rotating the cooling fan 5 in its radial direction into a flow toward the exhaust port 2f to guide the cooling air thereto is provided in this cooling air guide 11.

10. 发明专利

JP2000186555A RADIATOR PIPING STRUCTURE OF CONSTRUCTION EQUIPMENT 失效
公开(公告)号：JP2000186555A
公开(公告)日：2000-07-04
申请号：JP36776998
申请日：1998-12-24
申请人： YUTANI JUKO KK , KOBE STEEL LTD
发明人： SAGI KAZUYUKI , CHIKUANA TAKASHI , IWAMITSU HIROAKI
IPC分类号： F01P11/04
摘要： PROBLEM TO BE SOLVED: To provide the radiator piping structure of construction equipment to reduce the size of a revolving super structure without needing to form a space for preventing the occurrence of interference at the periphery of a cooling water supply piping and simplify the fixing structure of a cooling water supply piping. SOLUTION: A cooling water supply piping 5 to supply cooling water from a radiator 3 to an engine 2 is divided into two sections. A coupling means 6 is arranged at a revolving frame 1 arranged between the engine 2 and the radiator 3. The radiator 3 is connected to the coupling means 6 through a first cooling water supply piping 5a, and the coupling means 6 and the engine 2 are interconnected through a second cooling water supply piping 5b.

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