US20050204590A1 - Construction machine - Google Patents

Construction machine Download PDF

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Publication number
US20050204590A1
US20050204590A1 US11/081,729 US8172905A US2005204590A1 US 20050204590 A1 US20050204590 A1 US 20050204590A1 US 8172905 A US8172905 A US 8172905A US 2005204590 A1 US2005204590 A1 US 2005204590A1
Authority
US
United States
Prior art keywords
vertical rib
work equipment
construction machine
upper structure
left vertical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/081,729
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English (en)
Inventor
Yoshiyuki Takano
Kenichi Shimizu
Takeshi Endo
Yasuharu Kimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Komatsu Ltd
Komatsu Utility Co Ltd
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Assigned to KOMATSU LTD., KOMATSU ZENOAH CO. reassignment KOMATSU LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ENDO, TAKESHI, KIMURA, YASUHARU, SHIMIZU, KENICHI, TAKANO, YOSHIYUKI
Publication of US20050204590A1 publication Critical patent/US20050204590A1/en
Assigned to KOMATSU UTILITY CO., LTD. reassignment KOMATSU UTILITY CO., LTD. MERGER (SEE DOCUMENT FOR DETAILS). Assignors: KOMATSU ZENOAH CO.
Assigned to KOMATSU UTILITY CO., LTD. reassignment KOMATSU UTILITY CO., LTD. RECORD TO CORRECT THE RECEIVING PARTY'S ADDRESS, PREVIOUSLY RECORDED AT REEL 020133 FRAME 0689. Assignors: KOMATSU ZENOAH CO.
Abandoned legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/0808—Improving mounting or assembling, e.g. frame elements, disposition of all the components on the superstructures
    • E02F9/0825—Cast frame structure
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/18—Understructures, i.e. chassis frame on which a vehicle body may be mounted characterised by the vehicle type and not provided for in groups B62D21/02 - B62D21/17

Definitions

  • the present invention relates to a construction machine, and more particularly to a frame assembly that forms the base of an upper structure of a construction machine.
  • a backhoe 100 chiefly comprises a lower movement device 102 , an upper structure 103 , and an excavation device 104 installed on the upper structure 103 , as illustrated in FIG. 5 , which shows a right side view.
  • the revolving frame F that forms the base of the upper structure 103 and is provided at the bottom face thereof is equipped with a support 111 on which the excavation device 104 is supported on an axle in such a way as to be able to revolve in a horizontal direction, and is illustrated in FIG. 6 , which shows an exploded view.
  • operating the excavation device 104 of the backhoe 100 causes various loads to be applied to the revolving frame F that supports the excavation device 104 , so that a certain strength is required.
  • this revolving frame F needs to be of a certain size, it is constructed from sheet metal, as shown in FIG. 6 .
  • Revolving frames used in smaller-scale machines are sometimes made from cast owing to their relatively smaller size, as for example in the turning frame described in Japanese Patent Application Laid-open No. 2003-20683 (corresponding to the revolving frame of Japanese Patent Application Laid-open No. 2002-146834) (not illustrated).
  • FIG. 4B which is a cross-section showing the connection between the parts b 1 and b 2 .
  • a sharp groove is formed in the adjoining parts. This means that stress concentration can easily occur, and this makes it difficult to ensure sufficient strength.
  • the construction machine according to claim 1 of the present invention is a construction machine ( 1 ) which comprises: an undercarriage ( 2 ), an upper structure ( 3 ) rotatably mounted on a top of the undercarriage ( 2 ), and a work equipment ( 10 ) movably supported at a front of the upper structure ( 3 ), wherein within a frame assembly (Ra) that forms a base of the upper structure ( 3 ), at least the following components are produced by casting a weldable material: a work equipment support (Rb) that supports the work equipment ( 10 ); a right vertical rib (Rs 1 ) and a left vertical rib (Rs 2 ), a distance therebetween widening gradually as they extend backwards from the work equipment support; a bottom plate (Rt) that extends towards inside, adjoining bottom edges (Rb 2 , Rs 11 , Rs 21 ) of the work equipment support (Rb), the right vertical rib (Rs 1 ) and the left vertical rib (Rs
  • the construction machine relating to claim 2 of the present invention is the construction machine according to claim 1 , wherein within the frame assembly (Ra), a rear vertical rib (Ru) that adjoins back edges of the right vertical rib (Rs 1 ) and the left vertical rib (Rs 2 ) is produced by casting together with the work equipment support (Rb), the right vertical rib (Rs 1 ), the left vertical rib (Rs 2 ) and the bottom plate (Rt).
  • a rear vertical rib that adjoins back edges of the right vertical rib (Rs 1 ) and the left vertical rib (Rs 2 ) is produced by casting together with the work equipment support (Rb), the right vertical rib (Rs 1 ), the left vertical rib (Rs 2 ) and the bottom plate (Rt).
  • the construction machine relating to claim 3 of the present invention is the construction machine according to claim 1 , wherein the material used in the casting is cast steel.
  • the construction machine relating to claim 4 of the present invention is the construction machine according to claim 2 , wherein the material used in the casting is cast steel.
  • the construction machine relating to claim 1 of the present invention, by making the work equipment support, the right vertical rib, the left vertical rib, and the bottom plate of the frame assembly in a cast using a weldable material as described above, providing R portions inside groove, and making the structure thick in places likely to receive stress, it is possible to improve load capacity and strength and to improve the mechanical reliability.
  • a structure of even greater strength may be obtained by uniform molding the rear vertical rib in the cast.
  • FIG. 1 is a right side view of a hydraulic excavator as used in an embodiment of the present invention
  • FIG. 2 is a perspective view showing the assembly of the revolving frame of the hydraulic excavator used in the embodiment of the present invention
  • FIG. 3 is a perspective view of the revolving frame within the revolving frame assembly of the embodiment of the present invention
  • FIG. 4A and FIG. 4B are a cross-section showing the connection between the bottom plate and the left vertical rib within the revolving frame according to the present invention and a cross-section showing the connection between conventional metal plates;
  • FIG. 5 is a right side view showing a conventional backhoe
  • FIG. 6 is a perspective view showing an exploded illustration of the revolving frame of a conventional backhoe.
  • a hydraulic excavator (construction machine) 1 relating to an embodiment of the present invention comprises an undercarriage 2 equipped with a track r for movement, and an upper structure 3 rotatably mounted on top of the undercarriage 2 , in which the operator sits and controls operations.
  • the undercarriage 2 has driver wheels 5 and follower wheels 6 installed on the both ends of the track frames 4 r and 4 l; the track r is wound between the driver wheel 5 and the follower wheel 6 .
  • a blade b used for re-burying earth dug up by the bucket 10 c, is arranged in such a way as to be free to move in order to carry out its designated functions.
  • the upper structure 3 is provided with an operator's seat 3 a on top of which the operator sits to control operations; in front of this the work equipment 10 , having boom 10 a and an arm 10 b driven by oil pressure, and a bucket 10 c mounted onto the tip of the arm 10 b for use in excavation, is supported on an axle so as to be able to move up and down, and is also supported so as to be able to revolve in a horizontal direction around a support axle (not shown) provided perpendicularly on the boom fitting (work equipment support) Rb.
  • a support axle not shown
  • the workload brought about by the bucket 10 c through excavation work by the bucket 10 c of the work equipment 10 is transmitted via the arm 10 b and the boom 10 a to the boom fitting Rb that supports the work equipment 10 , and various loads or a large load are applied to the boom fitting Rb.
  • a counterweight w is provided in the back of the upper structure 3 .
  • the hydraulic excavator 1 constituted as described above is moved by starting the drive-source engine, converting the energy into oil pressure by a hydraulic pump, driving the hydraulic motor to transmit the drive force to the driver wheel 5 , and rotating the driver wheel 5 to cause the track r to rotate. Also, various kinds of work are carried out with the use of the bucket 10 c and the blade b.
  • An engine is stored inside the outer panel 3 p below the operator's seat 3 a within the upper structure 3 , while the oil-pressure valves, the revolving motor that revolves the upper structure 3 in relation to the undercarriage 2 , and the pipes are stored inside the lower outer panel 3 p 1 below the floor F of the body of the machine.
  • the fuel tank, the operation oil tank, and the battery, as well as a radiator and fan for cooling the engine are stored inside the outer panel 3 p on the left from the front of the operator's seat 3 a on the floor F of the upper structure 3 .
  • the upper structure 3 has the revolving frame assembly (frame assembly) Ra shown in FIG. 2 as its base, inside the lower outer panel 3 p 1 .
  • the revolving frame assembly Ra is produced by welding a plurality of steel plate parts of certain shapes to the revolving frame R shown in FIG. 3 .
  • the revolving frame R is uniformly shaped in a cast using cast steel; at the front is the boom fitting Rb, which has an opening Rb 1 running through it through which an axle passes vertically on which the work equipment 10 is supported so as to be rotatable in a horizontal direction.
  • the revolving frame R is constructed so as to bear a certain weight-load, since in addition to the various workloads transmitted by the work equipment 10 to the boom fitting Rb on which the work equipment 10 is supported, the revolving frame R as a whole also receives the weight of the upper structure 3 itself
  • the right vertical rib Rs 1 and the left vertical rib Rs 2 extend from the boom fitting Rb, the distance therebetween widening as they approach the rear to form a roughly triangular shape when viewed from above; the rear vertical rib Ru is arranged so as to adjoin the back ends of the right vertical rib Rs 1 and the left vertical rib Rs 2 .
  • the bottom plate Rt forms the lower face of the revolving frame R, extending inwards to adjoin the bottom edge Rb 2 of the boom fitting Rb, the bottom edge Rs 11 of the right vertical rib Rs 1 , and the bottom edge Rs 21 of the left vertical rib Rs 2 .
  • the bottom plate Rt is provided with three holes Rt 1 , Rt 2 , and Rt 3 , through which a swivel joint may be passed.
  • a valve mounting plate R 3 is formed on the outer face of the bottom edge Rs 11 of the right vertical rib Rs 1 , facing outwards and having an opening R 31 .
  • FIG. 4A which shows a cross-section of the connecting part between the bottom plate Rt and the left vertical rib Rs 2 , for example, the R portion is formed without any sharp groove in the connecting part, and without any sharp corners. Because of this, stress concentration is prevented in advance, and the weight-load capacity is improved.
  • the revolving frame R is formed so as to be thick in places to which a heavy weight will be applied and where greater strength is required, while it is thin in places where no particular strength is necessary. In this way an optimum thickness may be selected for all parts of the structure.
  • the revolving frame R that is the main part to which heavy loads will be applied is a light and high-strength structure.
  • the upper plate Ra 1 is joined to the revolving frame R as shown in FIG. 2 by welding it to the upper edges of the boom fitting Rb, the right vertical rib Rs 1 , and the left vertical rib Rs 2 .
  • welding on the upper plate Ra 1 means that the upper edges of the right vertical rib Rs 1 and the left vertical rib Rs 2 are supported; in addition to this, because the lower edges of the right vertical rib Rs 1 and the left vertical rib Rs 2 are connected to the bottom plate Rt, a four-sided box shape is formed by the upper plate Ra 1 , the right vertical rib Rs 1 , the left vertical plate Rs 2 , and the bottom plate Rt, with the components all supporting each other, forming a high-strength structure.
  • a partition plate Ra 2 is also welded to the revolving frame R to prevent conduction of heat from the engine, as well as a tank mounting plate Ra 3 onto which the fuel tank and operation oil tank are mounted; other sheet metal parts including parts Ra 4 , Ra 5 are also welded into position.
  • valves are provided in part A, an engine is provided in part B, the rotation motor, pipes and so on are provided in part C, the fuel tank and operation oil tank are provided in part D, and the battery, radiator and so on are provided in part E.
  • the revolving frame R that is the main part of the revolving frame assembly Ra that needs to be particularly strong is uniformly formed in a cast, using the freedom of shape inherent in cast metal production to give each part its ideal thickness, while at the same time forming the R portions in the grooves and corners.
  • cast steel was used to make the revolving frame R in the embodiment described above, the material used is not limited to cast steel, and any other weldable material may also be used.
  • the structure of the embodiment in the example above was such that the boom fitting Rb, the right vertical rib Rs 1 , the left vertical rib Rs 2 , the rear vertical rib Ru, and the bottom plate Rt were formed integrally in a cast, it is also possible to form the boom fitting Rb, the right vertical rib Rs 1 , the left vertical rib Rs 2 , and the bottom plate Rt integrally in a cast and to make the rear vertical rib Ru from sheet metal and attach it by welding.
  • the high strength of the parts formed integrally makes it possible to obtain a structure having the requisite weight-load capacity.
  • the right vertical rib Rs 1 , the left vertical rib Rs 2 , and the rear vertical rib Ru were described as being arranged so as to stand up in their positions.
  • the shape and position of the right vertical rib Rs 1 , the left vertical rib Rs 2 , and the rear vertical rib Ru is not limited to that of the present embodiment, and each rib might also be installed so as to incline in a perpendicular direction, or with secondary reinforcing ribs installed horizontally, for example.
  • the shape of the boom fitting Rb is not limited to that of the present embodiment, so long as it is so structured as to movably support the work equipment 10 .
  • the present invention may be effectively applied using a crawler dump truck, a bulldozer, or other agricultural machinery besides a hydraulic excavator, for example.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)
  • Component Parts Of Construction Machinery (AREA)
US11/081,729 2004-03-22 2005-03-17 Construction machine Abandoned US20050204590A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004-083392 2004-03-22
JP2004083392A JP2005271602A (ja) 2004-03-22 2004-03-22 建設機械

Publications (1)

Publication Number Publication Date
US20050204590A1 true US20050204590A1 (en) 2005-09-22

Family

ID=34858382

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/081,729 Abandoned US20050204590A1 (en) 2004-03-22 2005-03-17 Construction machine

Country Status (5)

Country Link
US (1) US20050204590A1 (de)
EP (1) EP1580332A3 (de)
JP (1) JP2005271602A (de)
KR (1) KR20060043739A (de)
CN (1) CN1673465A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110074182A1 (en) * 2009-09-29 2011-03-31 Kubota Corporation Swivel Frame
US20130093213A1 (en) * 2011-10-14 2013-04-18 Kobelco Construction Machinery Co., Ltd. Upper slewing body and operating machine having the same
US20140205411A1 (en) * 2013-01-22 2014-07-24 Kobelco Construction Machinery Co., Ltd. Working machine
US11970834B2 (en) 2019-06-14 2024-04-30 Komatsu Ltd. Work machine

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5066872B2 (ja) * 2006-09-08 2012-11-07 株式会社豊田自動織機 カウンタバランス型荷役車両のフレーム構造
KR100910169B1 (ko) * 2007-07-04 2009-07-31 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 굴삭기의 상부프레임
JP5156294B2 (ja) * 2007-08-03 2013-03-06 株式会社小松製作所 建設機械のメインフレームおよびこれを備えた建設機械
JP4697287B2 (ja) * 2008-10-30 2011-06-08 コベルコ建機株式会社 建設機械のフレーム構造
JP5100732B2 (ja) * 2009-09-29 2012-12-19 株式会社クボタ 旋回作業機の旋回フレーム
JP5814578B2 (ja) * 2011-03-24 2015-11-17 株式会社小松製作所 電動式作業車両及びそのベースフレーム
DE102011109080A1 (de) * 2011-07-27 2013-01-31 Liebherr-Hydraulikbagger Gmbh Drehbühnenelement für eine Baumaschine
US10480162B2 (en) * 2016-12-15 2019-11-19 Caterpillar Inc. Implement ground engaging tip assembly having tip with tapered retention channel

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US3902295A (en) * 1974-05-28 1975-09-02 Caterpillar Tractor Co Boom construction and method for making same
US4231699A (en) * 1979-01-24 1980-11-04 Dresser Industries, Inc. Lower and crawler frame construction for crawler propelled machines
US4577717A (en) * 1982-05-17 1986-03-25 Deere & Company Track unit extension for wide track crawler vehicles
US5074370A (en) * 1988-04-25 1991-12-24 Fried. Krupp Gesellschaft Mit Beschrankter Haftung Dual-track chassis
US5293949A (en) * 1991-10-24 1994-03-15 Eccon, Engineering, Computer, Consulting Gesellschaft M.B.H. Chassis for endless track type vehicles
US5894908A (en) * 1997-05-07 1999-04-20 Caterpillar Inc. Unitary frame structure
US5970636A (en) * 1997-07-25 1999-10-26 Esco Corporation Dump block
US6098870A (en) * 1997-06-30 2000-08-08 Caterpillar S.A.R.L. Frame assembly for a construction machine and an associated method of manufacturing the frame assembly
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US6322104B1 (en) * 1999-03-02 2001-11-27 Clark Equipment Company Excavator frame and method of assembly
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US6588521B1 (en) * 1998-03-27 2003-07-08 Manitowoc Crane Companies, Inc. Four track crawler crane
US6719075B2 (en) * 2000-08-15 2004-04-13 Komatsu Ltd. Frame structure of crawler-type construction machine vehicle
US6848522B2 (en) * 2002-04-19 2005-02-01 Link-Belt Construction Equipment Co. L.P. , Lllp Systems for connecting a ground-engaging motive device to a vehicle and related methods
US6851494B2 (en) * 2002-01-04 2005-02-08 Bauer Maschinen Gmbh Crawler running gear
US6857489B2 (en) * 2000-02-18 2005-02-22 Manitowoc Crane Companies, Inc. Crawler crane having identical left and right crawler assemblies
US6902027B2 (en) * 2001-02-21 2005-06-07 Komatsu Ltd. Piping structure of crawler driving hydraulic motor
US7066289B2 (en) * 2001-12-10 2006-06-27 Shin Caterpillar Mitsubishi Ltd. Track support system for a crawler
US20060267304A1 (en) * 2005-05-26 2006-11-30 Dong-Il Rubber Belt Co., Ltd Undercarriage having shock absorption function
US20070056786A1 (en) * 2005-09-15 2007-03-15 Komatsu Ltd. Frame structure for construction machine
US7204518B2 (en) * 2003-05-20 2007-04-17 Komatsu Ltd. Construction machine
US7204519B2 (en) * 2003-05-20 2007-04-17 Komatsu Ltd. Construction machine

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WO2001083895A1 (fr) * 2000-05-01 2001-11-08 Yanmar Co., Ltd. Engin pivotant
JP4524437B2 (ja) * 2001-07-09 2010-08-18 ヤンマー株式会社 旋回作業車のターニングフレーム

Patent Citations (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3902295A (en) * 1974-05-28 1975-09-02 Caterpillar Tractor Co Boom construction and method for making same
US4231699A (en) * 1979-01-24 1980-11-04 Dresser Industries, Inc. Lower and crawler frame construction for crawler propelled machines
US4577717A (en) * 1982-05-17 1986-03-25 Deere & Company Track unit extension for wide track crawler vehicles
US5074370A (en) * 1988-04-25 1991-12-24 Fried. Krupp Gesellschaft Mit Beschrankter Haftung Dual-track chassis
US5293949A (en) * 1991-10-24 1994-03-15 Eccon, Engineering, Computer, Consulting Gesellschaft M.B.H. Chassis for endless track type vehicles
US6145610A (en) * 1996-02-29 2000-11-14 Caterpillar Inc. Apparatus for locking the movable parts of a variable gauge
US5894908A (en) * 1997-05-07 1999-04-20 Caterpillar Inc. Unitary frame structure
US6098870A (en) * 1997-06-30 2000-08-08 Caterpillar S.A.R.L. Frame assembly for a construction machine and an associated method of manufacturing the frame assembly
US5970636A (en) * 1997-07-25 1999-10-26 Esco Corporation Dump block
US6588521B1 (en) * 1998-03-27 2003-07-08 Manitowoc Crane Companies, Inc. Four track crawler crane
US6322104B1 (en) * 1999-03-02 2001-11-27 Clark Equipment Company Excavator frame and method of assembly
US6499556B1 (en) * 1999-03-08 2002-12-31 Komatsu, Ltd. Revolving deck for earthmoving machinery
US6857489B2 (en) * 2000-02-18 2005-02-22 Manitowoc Crane Companies, Inc. Crawler crane having identical left and right crawler assemblies
US6719075B2 (en) * 2000-08-15 2004-04-13 Komatsu Ltd. Frame structure of crawler-type construction machine vehicle
US6902027B2 (en) * 2001-02-21 2005-06-07 Komatsu Ltd. Piping structure of crawler driving hydraulic motor
US7066289B2 (en) * 2001-12-10 2006-06-27 Shin Caterpillar Mitsubishi Ltd. Track support system for a crawler
US6851494B2 (en) * 2002-01-04 2005-02-08 Bauer Maschinen Gmbh Crawler running gear
US6848522B2 (en) * 2002-04-19 2005-02-01 Link-Belt Construction Equipment Co. L.P. , Lllp Systems for connecting a ground-engaging motive device to a vehicle and related methods
US7204518B2 (en) * 2003-05-20 2007-04-17 Komatsu Ltd. Construction machine
US7204519B2 (en) * 2003-05-20 2007-04-17 Komatsu Ltd. Construction machine
US20060267304A1 (en) * 2005-05-26 2006-11-30 Dong-Il Rubber Belt Co., Ltd Undercarriage having shock absorption function
US20070056786A1 (en) * 2005-09-15 2007-03-15 Komatsu Ltd. Frame structure for construction machine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110074182A1 (en) * 2009-09-29 2011-03-31 Kubota Corporation Swivel Frame
US8267217B2 (en) * 2009-09-29 2012-09-18 Kubota Corporation Swivel frame
US20130093213A1 (en) * 2011-10-14 2013-04-18 Kobelco Construction Machinery Co., Ltd. Upper slewing body and operating machine having the same
US20140205411A1 (en) * 2013-01-22 2014-07-24 Kobelco Construction Machinery Co., Ltd. Working machine
US9096991B2 (en) * 2013-01-22 2015-08-04 Kobelco Construction Machinery Co., Ltd. Working machine
US11970834B2 (en) 2019-06-14 2024-04-30 Komatsu Ltd. Work machine

Also Published As

Publication number Publication date
EP1580332A3 (de) 2006-07-05
JP2005271602A (ja) 2005-10-06
CN1673465A (zh) 2005-09-28
EP1580332A2 (de) 2005-09-28
KR20060043739A (ko) 2006-05-15

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AS Assignment

Owner name: KOMATSU LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:TAKANO, YOSHIYUKI;SHIMIZU, KENICHI;ENDO, TAKESHI;AND OTHERS;REEL/FRAME:016394/0899

Effective date: 20050308

Owner name: KOMATSU ZENOAH CO., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:TAKANO, YOSHIYUKI;SHIMIZU, KENICHI;ENDO, TAKESHI;AND OTHERS;REEL/FRAME:016394/0899

Effective date: 20050308

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