WO2006030626A1 - 建設機械のクローラフレーム取付構造 - Google Patents
建設機械のクローラフレーム取付構造 Download PDFInfo
- Publication number
- WO2006030626A1 WO2006030626A1 PCT/JP2005/015669 JP2005015669W WO2006030626A1 WO 2006030626 A1 WO2006030626 A1 WO 2006030626A1 JP 2005015669 W JP2005015669 W JP 2005015669W WO 2006030626 A1 WO2006030626 A1 WO 2006030626A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- leg
- crawler frame
- plate
- crawler
- construction machine
- 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.)
- Ceased
Links
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/08—Endless track units; Parts thereof
- B62D55/10—Bogies; Frames
-
- 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
- E02F9/02—Travelling-gear, e.g. associated with slewing gears
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/40—Special vehicles
- B60Y2200/41—Construction vehicles, e.g. graders, excavators
Definitions
- the present invention relates to a crawler frame mounting structure for a crawler-type construction machine such as a hydraulic excavator crawler crane.
- Construction machines represented by a hydraulic excavator include a center frame serving as a base, a crawler frame, a crawler belt mounted on the crawler frame, and a drive mechanism thereof as a lower traveling body.
- the center frame and the crawler frame are assembled by fastening bolts to the upper surface of the crawler frame with leg portions projecting on both sides of the center frame. With this configuration, it can be disassembled and transported.
- FIG. 6 shows an example of a joint portion between the leg portion 51 of the center frame 50 and the crawler frame 55.
- a mounting seat 52 that projects from both sides of a leg 51 that has a box structure and a mounting seat 56 that is provided on the upper surface of the crawler frame 55 are overlapped and fastened by a number of mounting bolts.
- a plate 53 is welded to the tip of the leg 51 of the center frame 50 so as to block the opening of the box structure, so that earth and sand do not enter the leg 51 when traveling at the work site. It ’s done!
- the force in the torsional direction acts on the crawler frame by overcoming the step during the work or running on the slope, and the leg structure 51 has a bottom structure.
- a large external force acts on the tip of the leg portion to cause damage.
- the plate 53 attached to the tip of the leg 51 is a strength member, and high stress is generated in the welded portion of the plate 53 and the base material. To that end, attach to the tip There is a problem that cracks are likely to occur near the lateral side due to the influence of the plate 53.
- the reinforcing means known from Patent Document 1 is a reinforcing rib that reinforces a vertical member that constitutes an extension leg portion of a center frame and a lower member that serves as a mounting seat portion by a joint ( Since gussets are easily damaged by stress concentration, they are intended to be used as a means to replace them and can achieve the desired purpose.
- the fastening bolt between the leg and the track frame (crawler frame) is used along the joint between the leg vertical plate and the leg overhanging portion (mounting seat plate). Since the bolts are fastened through the mounting holes provided in one block body, the fastening condition of the bolts is not sufficiently controlled. There is a risk of problems such as damage to the cracks and cracks at the welds around the leg overhang.
- Patent Document 1 Japanese Patent Laid-Open No. 9-136662
- the present invention was made to solve such problems, and an object of the present invention is to provide a crawler frame mounting structure for a construction machine that can improve durability without being complicated structurally. It is what.
- a crawler frame mounting structure for a construction machine has the following characteristics.
- a crawler frame mounting structure for a construction machine includes a center frame and a plate.
- the center frame is attached in a state where the upper swing body can rotate, and has leg portions at both the left and right ends, and is fastened to the crawler frame at the leg portions.
- the leg portions are welded to each other by a bottom plate member, a pair of vertical plate members standing on the bottom plate member at a predetermined interval, and an upper plate member attached so as to cover the upper portions of the pair of vertical plate members.
- a box structure is formed.
- the plate is fixed to the tip of the leg by welding, and is fixed to the crawler frame by fastening bolts inserted into fastening bolt holes formed at both left and right ends.
- a crawler frame mounting structure for a construction machine according to a second invention is a crawler frame mounting structure for a construction machine according to the first invention, wherein the plate is welded to a pair of vertical plate members constituting the leg portion. The width is larger than the position interval.
- a crawler frame mounting structure for a construction machine according to a third invention is a crawler frame mounting structure for a construction machine according to the first or second invention, wherein the fastening bolt holes formed at both ends of the plate are: It is formed outside the welding position with respect to the pair of vertical plate members constituting the leg portion.
- a crawler frame mounting structure for a construction machine according to a fourth invention is a crawler frame mounting structure for a construction machine according to any one of the first to third inventions, wherein the plate constitutes a leg portion.
- the bottom plate member is fixed to the crawler frame by fastening bolts so as to sandwich the bottom plate member.
- a crawler frame mounting structure for a construction machine according to a fifth invention is a crawler frame mounting structure for a construction machine according to any one of the first to fourth inventions. R part is formed.
- the concentration of stress at both ends of the plate can be avoided by the recessed portion having a substantially R shape, and durability can be improved.
- a crawler frame mounting structure for a construction machine according to a sixth invention is a crawler frame mounting structure for a construction machine according to any one of the first to fifth inventions, wherein the legs are crawler frames. It is attached to the space between the plurality of upper rollers attached to the.
- a leg portion having a width as wide as possible is formed in the space between the mounting positions of the upper wheel, and the leg portion is fixed to the position, thereby strengthening the center frame with respect to the crawler frame. Can be fixed to.
- the width of the plate which is not only the width of the leg portion, is secured as wide as possible in the space between the mounting positions of the upper wheel, thereby forming a more durable structure. can do.
- a crawler frame mounting structure for a construction machine includes a center frame for attaching the upper swing body to the rotating body, and front and rear legs on the left and right of the center frame.
- the plate attached to the tip of the leg not only closes the end surface of the box structure but also functions as a strength member, and is also at the tip of the leg that is most affected by the external force.
- FIG. 1 is an overall perspective view of a hydraulic excavator to which the present invention is applied.
- FIG. 2 is an external perspective view showing the main part.
- FIG. 3 is an enlarged plan view of the main part.
- FIG. 4 A view of the center frame with part of the legs cut away (a) and AA view (b).
- FIG. 6 is a view showing an example of a joint portion between a center frame and a crawler frame in a conventional lower traveling body.
- FIG. 7 is a view showing an example of a joint portion between a center frame and a crawler frame according to another embodiment of the present invention.
- FIG. 1 is an overall perspective view of a hydraulic excavator to which the present invention is applied.
- Fig. 2 is an external perspective view showing the main part
- Fig. 3 is an enlarged plan view of the main part
- Fig. 4 (a) is a center view.
- Fig. 4 (b) shows the cross-sectional view taken along line AA in Fig. 4 (a).
- the lower traveling body 21 in the excavator 20 is supported by winding a center frame 1 that rotatably supports an upper swinging body 22 mounted with a power unit such as a work machine 23 and an engine, and a crawler belt 27 that travels. And a pair of crawler frames 25.
- the center frame 1 has leg portions 5 on the left and right sides (the direction is expressed with reference to the travel axis a. The same applies hereinafter) of the main body portion 2 provided with a turning portion 3 for turning wheels for turning. 5 is provided so as to divide and extend forward and backward at a predetermined interval.
- the leg portions 5 and 5 are provided symmetrically, so that only one side is shown.
- the leg portion 5 (which is structurally the same and will be described for convenience of explanation) has a required width for forming a mounting seat portion to be joined to the mounting seat 26 of the crawler frame 25.
- the lower member 6 sized, the vertical members 7 and 7 (corresponding to the vertical plate of the present invention) erected on the lower member 6 at a required interval, and the vertical members 7 and 7
- the upper member 8 arranged in the box is joined together by welding to form a box structure as a whole.
- a thick end plate 10 is integrally welded to the end of the leg 5 so as to close the end face of the box structure.
- the end plate 10 has an upper half that is equal to or slightly wider than the width dimension of the upper member 8 (interval between the welding positions of the pair of vertical members 7 and 7), and the lower half is the lower member.
- a step portion 11 including a substantially R portion formed on both sides is formed so as to be slightly narrower than the width of 6.
- the fastening bolt hole 13 is each provided in both the step parts 11 so that the lower member 6 may be penetrated.
- the upper member 8, the vertical member 7, and the lower member 6 constituting the end plate 10 and the leg 5 are all joined by fillet welding.
- the upper end portion 10a of the end plate 10 is configured to protrude beyond the upper surface of the end portion of the upper member 8, thereby reducing the stress at the welded portion and securing the weld leg length. Yes.
- mounting seats 26 for receiving and supporting the leg portions 5 of the center frame 1 are provided so as to correspond to the front and rear two places.
- the mounting seat 26 is provided with a required number of bolt holes for joining and fixing the legs 5 of the center frame 1 at predetermined positions.
- the front end is provided with an idler wheel support, and the rear end Each is provided with a drive wheel and a bracket (not shown) for supporting the drive unit.
- a box structure is formed between the both end portions, and a device (not shown) such as a tension adjusting device for the crawler belt 27 to be hooked can be built in the box structure.
- the center frame 1 configured as described above mounts a mounting seat portion formed by the lower member 6 of the leg portion 5 on the mounting seat 26 of the crawler frame 25 with respect to the crawler frame 25.
- Bolt holes 12, 13 and bolt holes (mounting seat 26 side) provided in the are aligned and fastened with bolts 15, 15 'and nuts (not shown), so that the entire lower traveling body 21 A frame.
- the center portion 1 is joined to the center frame 1 by receiving an external force acting on the crawler frame 25, and the attachment portion 26 is joined at the center portion.
- the end of the leg 5 of the frame 1 is welded and joined to the end of the box structure consisting of the lower member 6, the upper member 8, and the vertical members 7, 7 by the thick end plate 10. Functions as a member. For this reason, it is possible to relieve the stress of the welded part and the base metal in the part caused by the external force.
- the end plate 10 at the tip of the leg 5 also serves as a reinforcing rib (gusset) on both sides, and cooperates with the gusset 9 attached to the intermediate outer surface of the leg 5 to Functions to increase strength.
- the upper half is the same as or slightly wider than the width of the upper member 8 at the tip of the leg 5 and the lower half is slightly narrower than the width of the lower member 6 on both sides.
- stepped portions 11 are formed and the end plate 10 provided so that the fastening bolt hole 13 penetrates the lower member 6 in both stepped portions 11 is fixed by welding has been described.
- the width of the end plate 10 does not have to be large enough to approximate the width of the lower member 6.
- the attachment of the end plate 10 having the same width as that of the lower member 6 as in the above-described embodiment means that the resistance against stress in the end plate 10 is a narrow end shown in FIG. It is more preferable in that it is larger than the part plate.
- the crawler frame mounting structure of the construction machine solves the problem at the fastening part between the leg portion of the center frame of the lower traveling body and the crawler frame, which is subjected to a heavy load for a long time due to severe work.
- a crawler-crawler construction such as a crawler crane can be achieved because the structure can be simplified and the durability can be increased. Widely applicable to machines.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Body Structure For Vehicles (AREA)
- Jib Cranes (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006535121A JP4451448B2 (ja) | 2004-09-14 | 2005-08-29 | 建設機械のクローラフレーム取付構造 |
| GB0702006A GB2430657B (en) | 2004-09-14 | 2005-08-29 | Crawler Frame Mounting Structure For A Construction Machine |
| DE112005002104.1T DE112005002104B4 (de) | 2004-09-14 | 2005-08-29 | Raupenrahmenbefestigungsaufbau für eine Baumaschine |
| US11/660,736 US7458633B2 (en) | 2004-09-14 | 2005-08-29 | Crawler frame mounting structure for construction machinery |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004-266209 | 2004-09-14 | ||
| JP2004266209 | 2004-09-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006030626A1 true WO2006030626A1 (ja) | 2006-03-23 |
Family
ID=36059881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/015669 Ceased WO2006030626A1 (ja) | 2004-09-14 | 2005-08-29 | 建設機械のクローラフレーム取付構造 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US7458633B2 (ja) |
| JP (1) | JP4451448B2 (ja) |
| KR (1) | KR20070044035A (ja) |
| CN (1) | CN100548772C (ja) |
| DE (1) | DE112005002104B4 (ja) |
| GB (1) | GB2430657B (ja) |
| WO (1) | WO2006030626A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013073415A1 (ja) * | 2011-11-14 | 2013-05-23 | 日立建機株式会社 | 建設機械のトラックフレーム |
| JP2019120052A (ja) * | 2018-01-05 | 2019-07-22 | 日立建機株式会社 | 建設機械フレームの締結構造 |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8523120B2 (en) * | 2004-06-14 | 2013-09-03 | Komatsu Ltd. | Component support device and construction machine with component attached via the same |
| US7681918B2 (en) * | 2005-12-01 | 2010-03-23 | Clark Equipment Company | Frame for mounting a slew bearing |
| US7997619B2 (en) * | 2006-09-28 | 2011-08-16 | Kubota Corporation | Track frame for work machine |
| JP2013151795A (ja) * | 2012-01-24 | 2013-08-08 | Hitachi Constr Mach Co Ltd | 建設機械のトラックフレーム |
| JP5875077B2 (ja) * | 2012-11-13 | 2016-03-02 | キャタピラー エス エー アール エル | 溶接構造および作業機械 |
| US9840283B2 (en) * | 2016-02-23 | 2017-12-12 | Caterpillar Inc. | Machine frame |
| US11046536B2 (en) * | 2019-01-29 | 2021-06-29 | Transloading Services, Inc. | System for mounting and unloading rail cars and methods of using them |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55160988U (ja) * | 1979-05-08 | 1980-11-19 | ||
| JPH0286883U (ja) * | 1988-12-23 | 1990-07-10 | ||
| JPH09136662A (ja) * | 1995-11-15 | 1997-05-27 | Shin Caterpillar Mitsubishi Ltd | 建設機械のカーボディ脚部接合構造 |
| JP2002275939A (ja) * | 2001-03-21 | 2002-09-25 | Hitachi Constr Mach Co Ltd | 建設機械のトラックフレーム |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1629890A (en) * | 1925-07-27 | 1927-05-24 | George T Ronk | Frame construction for excavator trucks |
| US2144760A (en) * | 1937-01-11 | 1939-01-24 | Harnischfeger Corp | Excavator base and frame |
| GB1179395A (en) * | 1966-03-17 | 1970-01-28 | Winget Ltd | Mobile Load Lifting Vehicles |
| JPS5621979A (en) * | 1979-07-27 | 1981-02-28 | Hitachi Constr Mach Co Ltd | Truck structure for construction vehicle |
| FR2467131A1 (fr) * | 1979-10-11 | 1981-04-17 | Poclain Sa | Chassis porteur d'un engin mobile, telle qu'une pelle hydraulique |
| FR2488206B1 (fr) * | 1980-08-07 | 1985-07-12 | Poclain Sa | Chassis porteur d'un engin mobile a bati central et longerons |
| US5823279A (en) * | 1991-09-20 | 1998-10-20 | Hanitowoc Crane Group, Inc. | Carbody to crawler connection |
| JPH08216940A (ja) * | 1995-02-14 | 1996-08-27 | Hitachi Constr Mach Co Ltd | 建設機械のトラックフレーム |
| FI4654U1 (fi) * | 1999-10-01 | 2000-10-10 | Konepaja Mantsinen Oy | Nosturirakenne |
| GB2367539A (en) * | 2000-10-05 | 2002-04-10 | Caterpillar Inc | Manufacturing a main frame of a work 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 |
| ATE388881T1 (de) * | 2002-11-28 | 2008-03-15 | Hitachi Construction Machinery | Gleiskettengestell für baumaschine |
| DE20219299U1 (de) * | 2002-12-12 | 2004-04-15 | Liebherr-Werk Ehingen Gmbh | Unterwagen eines Krans |
| JP4617096B2 (ja) * | 2003-05-20 | 2011-01-19 | 株式会社小松製作所 | 建設機械 |
| JP4120530B2 (ja) * | 2003-08-21 | 2008-07-16 | コベルコ建機株式会社 | 建設機械のサポート柱取付方法 |
-
2005
- 2005-08-29 DE DE112005002104.1T patent/DE112005002104B4/de not_active Expired - Fee Related
- 2005-08-29 KR KR1020077004489A patent/KR20070044035A/ko not_active Ceased
- 2005-08-29 GB GB0702006A patent/GB2430657B/en not_active Expired - Fee Related
- 2005-08-29 US US11/660,736 patent/US7458633B2/en not_active Expired - Lifetime
- 2005-08-29 JP JP2006535121A patent/JP4451448B2/ja not_active Expired - Fee Related
- 2005-08-29 CN CNB2005800302119A patent/CN100548772C/zh not_active Expired - Fee Related
- 2005-08-29 WO PCT/JP2005/015669 patent/WO2006030626A1/ja not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55160988U (ja) * | 1979-05-08 | 1980-11-19 | ||
| JPH0286883U (ja) * | 1988-12-23 | 1990-07-10 | ||
| JPH09136662A (ja) * | 1995-11-15 | 1997-05-27 | Shin Caterpillar Mitsubishi Ltd | 建設機械のカーボディ脚部接合構造 |
| JP2002275939A (ja) * | 2001-03-21 | 2002-09-25 | Hitachi Constr Mach Co Ltd | 建設機械のトラックフレーム |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013073415A1 (ja) * | 2011-11-14 | 2013-05-23 | 日立建機株式会社 | 建設機械のトラックフレーム |
| JPWO2013073415A1 (ja) * | 2011-11-14 | 2015-04-02 | 日立建機株式会社 | 建設機械のトラックフレーム |
| AU2012337985B2 (en) * | 2011-11-14 | 2016-05-19 | Hitachi Construction Machinery Co., Ltd. | Truck frame for construction machinery |
| US9604680B2 (en) | 2011-11-14 | 2017-03-28 | Hitachi Construction Machinery Co., Ltd. | Truck frame for construction machine |
| US9610985B2 (en) | 2011-11-14 | 2017-04-04 | Hitachi Construction Machinery Co., Ltd. | Truck frame for construction machine |
| DE112012004735B4 (de) | 2011-11-14 | 2022-08-18 | Hitachi Construction Machinery Co., Ltd. | Fahrgestellrahmen für Baumaschine |
| JP2019120052A (ja) * | 2018-01-05 | 2019-07-22 | 日立建機株式会社 | 建設機械フレームの締結構造 |
Also Published As
| Publication number | Publication date |
|---|---|
| US7458633B2 (en) | 2008-12-02 |
| GB2430657B (en) | 2007-09-19 |
| DE112005002104B4 (de) | 2018-08-16 |
| US20070290526A1 (en) | 2007-12-20 |
| JPWO2006030626A1 (ja) | 2008-05-08 |
| CN101014491A (zh) | 2007-08-08 |
| GB0702006D0 (en) | 2007-03-14 |
| JP4451448B2 (ja) | 2010-04-14 |
| KR20070044035A (ko) | 2007-04-26 |
| DE112005002104T5 (de) | 2007-08-16 |
| GB2430657A (en) | 2007-04-04 |
| CN100548772C (zh) | 2009-10-14 |
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