JP2001279722A - Counter weight of construction machine - Google Patents

Counter weight of construction machine

Info

Publication number
JP2001279722A
JP2001279722A JP2000092278A JP2000092278A JP2001279722A JP 2001279722 A JP2001279722 A JP 2001279722A JP 2000092278 A JP2000092278 A JP 2000092278A JP 2000092278 A JP2000092278 A JP 2000092278A JP 2001279722 A JP2001279722 A JP 2001279722A
Authority
JP
Japan
Prior art keywords
window
counterweight
construction machine
window cover
inspection
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.)
Pending
Application number
JP2000092278A
Other languages
Japanese (ja)
Inventor
Naoki Kamiyama
直樹 上山
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.)
Sumitomo SHI Construction Machinery Co Ltd
Original Assignee
Sumitomo SHI Construction Machinery Co Ltd
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 Sumitomo SHI Construction Machinery Co Ltd filed Critical Sumitomo SHI Construction Machinery Co Ltd
Priority to JP2000092278A priority Critical patent/JP2001279722A/en
Publication of JP2001279722A publication Critical patent/JP2001279722A/en
Pending legal-status Critical Current

Links

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  • Component Parts Of Construction Machinery (AREA)
  • Jib Cranes (AREA)

Abstract

PROBLEM TO BE SOLVED: To facilitate the maintenance inspection working of the instrument of the inside of the room of the engine of a construction machine. SOLUTION: Windows 13, 14 are provided on the rear face center and the right and left sides of the counter weight 12 of the construction machine, and the maintenance inspection of the engine or the like is performed through a three-way window. After inspection, window covers 16, 17 are mounted on a window to be shielded. The window cover attaches spring lip plate on the rear face, fixed by engaging the lip plate with the groove of the circumference of the window and are easy to attach and detach.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】この発明は、建設機械のカウ
ンタウェイトに関するものであり、特に、建設機械のエ
ンジンや周辺補機類の保守点検作業の容易化を図ったカ
ウンタウェイトに関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a counterweight for a construction machine, and more particularly to a counterweight for facilitating maintenance and inspection of an engine of a construction machine and peripheral accessories.

【0002】[0002]

【従来の技術】ショベルカーやクレーン等の建設機械
は、揚重時のバランスをとるために本体の背面にカウン
タウェイトが取付けられていて、本体後部に配置されて
いるエンジン室の背面及び後部左右両側面がカウンタウ
ェイトによって遮蔽されている。したがって、エンジン
室内のエンジンや補機類の保守点検は、機械室の上方や
下方から行うことになり、整備性が悪いという問題があ
る。
2. Description of the Related Art Construction machines, such as shovel cars and cranes, have counterweights attached to the back of a main body for balancing during lifting. Both sides are shielded by the counterweight. Therefore, maintenance and inspection of the engine and accessories in the engine room are performed from above and below the machine room, and there is a problem that maintainability is poor.

【0003】特に、小さい旋回半径が要求される小型建
設機械においては、カウンタウェイトの後方への突出量
を可及的に短縮し、且つ十分な安定度を確保するため
に、カウンタウェイトが相対的に大型化する結果、エン
ジンや補機等とカウンタウェイトとの間隙が狭くなり、
エンジン等の保守点検に際してカウンタウェイトを建設
機械から取外さなければならない場合が多く、保守点検
作業に時間と多大な手間がかかる。
[0003] In particular, in a small construction machine requiring a small turning radius, in order to reduce the amount of rearward projection of the counterweight as much as possible and to secure sufficient stability, the counterweight is relatively moved. As a result, the gap between the engine, auxiliary equipment, etc. and the counterweight becomes narrower,
In many cases, it is necessary to remove the counterweight from the construction machine for maintenance and inspection of the engine and the like, and the maintenance and inspection work requires a lot of time and labor.

【0004】保守点検の作業性を向上させるための提案
としては、カウンタウェイトの背面に窓を形成し、この
窓に開閉可能なカバーをヒンジまたはボルトによって取
付けたカウンタウェイトや、エンジン室内へ手を挿入で
きるように切欠きを設けたカウンタウェイト等が提案さ
れている。
[0004] As a proposal for improving the workability of maintenance and inspection, a window is formed on the back surface of the counterweight, and a cover that can be opened and closed on the window is hinged or bolted. A counterweight or the like provided with a notch so that it can be inserted has been proposed.

【0005】[0005]

【発明が解決しようとする課題】カウンタウェイトの背
面に形成した窓に、カバーをヒンジまたはボルトによっ
て取付けたカウンタウェイトは、建設機械の背面側から
エンジン室内の機器の点検整備が可能であるが、左右側
面は閉鎖されているので、点検や整備が不可能な箇所が
あり、整備性に改善の余地がある。
A counterweight in which a cover is attached to a window formed on the backside of the counterweight by a hinge or a bolt enables inspection and maintenance of equipment in the engine room from the rear side of the construction machine. Since the left and right sides are closed, there are places where inspection and maintenance are not possible, and there is room for improvement in maintainability.

【0006】また、切欠きを形成したカウンタウェイト
は、窓を形成したものよりも強度の低下が大きく、例え
ば、建設機械の旋回時にカウンタウェイトが障害物と干
渉したときに、割れや欠損が起こりやすいという問題が
ある。
[0006] Further, the notch formed counterweight has a greater reduction in strength than the notched window. For example, when the counterweight interferes with an obstacle during turning of the construction machine, cracking or chipping occurs. There is a problem that it is easy.

【0007】そこで、カウンタウェイトの強度を低下す
ることなく整備性をさらに改善するために解決すべき技
術的課題が生じてくるのであり、本発明は上記課題を解
決することを目的とする。
[0007] Therefore, there arises a technical problem to be solved in order to further improve the maintainability without reducing the strength of the counterweight, and an object of the present invention is to solve the above problem.

【0008】[0008]

【課題を解決するための手段】この発明は、上記目的を
達成するために提案するものであり、建設機械のエンジ
ン室の背面に装着されるカウンタウェイトであって、カ
ウンタウェイトの背面と左右両側面とにエンジン室へ通
じる窓を形成し、窓を通じて外部からエンジン室内の保
守点検ができるように構成するとともに、各窓に着脱自
在な窓カバーを装着したことを特徴とする建設機械のカ
ウンタウェイトを提供するものである。
SUMMARY OF THE INVENTION The present invention proposes a counterweight mounted on the back of an engine room of a construction machine, wherein the counterweight is mounted on the back of the engine room of the construction machine. A counterweight for construction machinery, characterized in that a window that leads to the engine room is formed on the front and rear surfaces, and that maintenance and inspection of the engine room can be performed from the outside through the window, and a removable window cover is attached to each window. Is provided.

【0009】また、上記窓カバーの裏面の左右縁部また
は上下縁部にバネ性のリブプレートを取付け、カウンタ
ウェイトの窓の周囲に窓カバーのリブプレートと嵌合対
偶を構成する溝部を形成し、カウンタウェイトへ窓カバ
ーを嵌着及び取外し自在とした建設機械のカウンタウェ
イトを提供するものである。
[0009] A spring rib plate is attached to the left or right edge or upper and lower edge of the back surface of the window cover, and a groove is formed around the window of the counterweight to form a mating pair with the rib plate of the window cover. Another object of the present invention is to provide a counterweight of a construction machine in which a window cover can be freely attached to and removed from the counterweight.

【0010】[0010]

【発明の実施の形態】以下、この発明の実施の一形態を
図に従って詳述する。図1及び図2は建設機械の一例と
してパワーショベル1を示し、下部走行体2の上に上部
旋回体3が搭載されている。下部走行体2は左右にクロ
ーラ走行装置4を備えており、後部の駆動輪5によりク
ローラ6を回転駆動して走行する。上部旋回体3にはブ
ーム7、アーム8、及びバケット9からなる掘削装置が
設けられており、前部の左側に運転室10が配置されて
いる。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. FIGS. 1 and 2 show a power shovel 1 as an example of a construction machine, in which an upper revolving structure 3 is mounted on a lower traveling structure 2. The lower traveling body 2 is provided with crawler traveling devices 4 on the left and right sides, and travels by driving the crawler 6 by the driving wheels 5 at the rear. The upper swing body 3 is provided with a digging device including a boom 7, an arm 8, and a bucket 9, and a driver's cab 10 is disposed on the left side of the front part.

【0011】上部旋回体3の後部はエンジン室11であ
り、エンジン室11内にエンジンとオルタネータやラジ
エータ等の補機類並びに油圧ポンプ等が配置されてい
て、エンジン室11の後部にカウンタウェイト12が装
着されている。
A rear portion of the upper revolving unit 3 is an engine room 11 in which an engine, accessories such as an alternator and a radiator, a hydraulic pump, and the like are arranged. Is installed.

【0012】カウンタウェイト12の平面形状は、背面
が上部旋回体3の旋回中心を円中心とする円弧形曲面と
なっており、上部旋回体3の旋回時にカウンタウェイト
12が周囲の物体と干渉する虞れを軽減している。カウ
ンタウェイト12には、エンジン室11内のエンジン等
の保守点検の容易化を図って、背面中央と左右の側面と
に窓13,14,15を設けてあり、3個の窓13,1
4,15にそれぞれ窓カバー16,17,18を装着し
てある。
The planer shape of the counterweight 12 is such that the back surface is an arc-shaped curved surface centered on the turning center of the upper revolving unit 3, and the counterweight 12 interferes with surrounding objects when the upper revolving unit 3 turns. The risk of doing so is reduced. The counterweight 12 is provided with windows 13, 14, 15 at the center of the back and right and left sides to facilitate maintenance and inspection of the engine and the like in the engine room 11.
Window covers 16, 17, 18 are attached to 4, 15, respectively.

【0013】図3は、カウンタウェイト12の左右中央
部分の断面図であり、背面の左右中央を貫通している窓
14の周囲に、窓カバー17とほぼ同一寸法の浅い凹部
19を形成し、凹部19内に窓カバー17を収めて、窓
カバー17の表面がカウンタウェイト12の表面と連続
するように構成しているので、窓カバー17がカウンタ
ウェイト12の表面上に突出せず、美観を損なうことが
ない。
FIG. 3 is a cross-sectional view of the left and right central portions of the counterweight 12, and a shallow recess 19 having substantially the same dimensions as the window cover 17 is formed around a window 14 passing through the left and right centers of the back surface. Since the window cover 17 is housed in the recess 19 and the surface of the window cover 17 is configured to be continuous with the surface of the counterweight 12, the window cover 17 does not protrude above the surface of the counterweight 12. There is no loss.

【0014】図4は窓カバー17の裏面を示し、アール
形長方形の窓カバー17の裏面は、左右両端部を除いて
吸音材20が貼付されており、吸音材20の周縁部にク
ッション材21が貼付されている。クッション材21は
カウンタウェイト12の窓14の周縁部に弾接して、音
漏れを防ぐとともに吸音材20の縁部を保護するもので
ある。
FIG. 4 shows the back surface of the window cover 17. The sound absorbing material 20 is adhered to the back surface of the R-shaped rectangular window cover 17 except for both right and left ends. Is affixed. The cushion member 21 elastically contacts the peripheral portion of the window 14 of the counterweight 12 to prevent sound leakage and protect the edge of the sound absorbing material 20.

【0015】窓カバー17の裏面の左右両端近傍には、
上端から下端に亘る長さのバネ性リブプレート22が溶
接されている。図3に示すように、リブプレート22は
C形断面であって、少なくとも一方のリブプレート(図
3において上側)は、先端部が窓カバー17の中央方向
へやや傾斜する姿勢で取付けられている。カウンタウェ
イト12の凹部19には、窓カバー17のリブプレート
22に対応する溝部23が形成されていて、溝部23と
リブプレート22が嵌合対偶を構成している。尚、図示
は省略するが、カウンタウェイト12の左右両側面の窓
13,15及び左右の窓カバー16,18も、上記の背
面側窓14及び窓カバー17と同一の構成となってい
る。
In the vicinity of the left and right ends on the back surface of the window cover 17,
A spring rib plate 22 having a length extending from the upper end to the lower end is welded. As shown in FIG. 3, the rib plate 22 has a C-shaped cross section, and at least one of the rib plates (upper side in FIG. 3) is attached in such a manner that its tip end is slightly inclined toward the center of the window cover 17. . A groove 23 corresponding to the rib plate 22 of the window cover 17 is formed in the concave portion 19 of the counterweight 12, and the groove 23 and the rib plate 22 form a fitting pair. Although not shown, the windows 13 and 15 and the left and right window covers 16 and 18 on the left and right sides of the counterweight 12 have the same configuration as the rear window 14 and the window cover 17 described above.

【0016】窓カバー16,17,18をカウンタウェ
イト12の窓13,14,15へ装着する際は、窓カバ
ー16,17,18を各窓13,14,15の凹部19
へ位置合わせし、窓カバー16,17,18を奥方向へ
押し込めば、溝部23へリブプレート22が嵌合し、リ
ブプレート22が溝部23の内側の壁へ弾接して窓カバ
ー16,17,18が固定される。このとき、左側のリ
ブプレート22(図3において下側)を先に溝部22へ
挿入し、続いて窓カバーの右側を奥へ押して右側のリブ
プレート22を溝部23へ嵌合させれば、円滑に窓カバ
ー16,17,18を装着できる。
When the window covers 16, 17, 18 are mounted on the windows 13, 14, 15 of the counterweight 12, the window covers 16, 17, 18 are fitted with the recesses 19 of the windows 13, 14, 15 respectively.
When the window covers 16, 17, 18 are pushed in the depth direction, the rib plate 22 is fitted into the groove 23, and the rib plate 22 elastically contacts the inner wall of the groove 23, and the window cover 16, 17, 18 is pressed. 18 is fixed. At this time, if the left rib plate 22 (lower side in FIG. 3) is inserted into the groove 22 first, and then the right side of the window cover is pushed inward to fit the right rib plate 22 into the groove 23, the Window covers 16, 17, and 18 can be attached to the vehicle.

【0017】また、エンジン室11内の保守点検に際し
て窓カバー16,17,18をカウンタウェイト12か
ら取外す場合は、窓カバー16,17,18の左端部ま
たは右端部を手で手前に引けばリブプレート22が溝部
23から外れて、簡単に窓カバー16,17,18の着
脱ができる。
When the window covers 16, 17, 18 are to be removed from the counterweight 12 for maintenance and inspection inside the engine room 11, the left or right end of the window covers 16, 17, 18 can be pulled by hand. The plate 22 comes off the groove 23, and the window covers 16, 17, 18 can be easily attached and detached.

【0018】尚、この発明は上記の実施形態に限定する
ものではなく、この発明の技術的範囲内において種々の
改変が可能であり、この発明がそれらの改変されたもの
に及ぶことは当然である。
The present invention is not limited to the above-described embodiment, and various modifications are possible within the technical scope of the present invention, and it is natural that the present invention extends to those modifications. is there.

【0019】[0019]

【発明の効果】以上説明したように、本発明の建設機械
のカウンタウェイトは、背面と左右両側面に窓を設けて
いるので、エンジン室内の機器の保守点検が容易に行え
るとともに、切欠きを設けたカウンタウェイトに比較し
て強度が高く、割れや欠損のおそれも解消される。
As described above, since the counterweight of the construction machine according to the present invention has windows on the rear surface and on both right and left sides, maintenance and inspection of the equipment in the engine room can be easily performed and notches are provided. The strength is higher than that of the provided counterweight, and the possibility of cracking or chipping is eliminated.

【0020】また、窓カバーをバネ性リブプレートを用
いて窓へ嵌合させるように構成することにより、従来の
ボルト固定形窓カバーや、ヒンジ式窓カバーに比較し
て、部品点数が減少してコストが削減されるとととも
に、表面にボルトやヒンジ等が露出しないので美観も向
上する。
Further, by configuring the window cover to be fitted to the window using the spring rib plate, the number of parts is reduced as compared with the conventional bolt fixed type window cover and the hinge type window cover. Cost is reduced, and the aesthetic appearance is improved because bolts and hinges are not exposed on the surface.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の実施形態を示し、建設機械の側面図。FIG. 1 is a side view of a construction machine according to an embodiment of the present invention.

【図2】図1の建設機械の背面図。FIG. 2 is a rear view of the construction machine shown in FIG. 1;

【図3】カウンタウェイトの中央部分の水平断面図。FIG. 3 is a horizontal sectional view of a central portion of a counterweight.

【図4】カウンタウェイトの窓カバーの裏面図。FIG. 4 is a rear view of the window cover of the counterweight.

【符号の説明】[Explanation of symbols]

1 パワーショベル 10 運転室 11 エンジン室 12 カウンタウェイト 13,14,15 窓 16,17,18 窓カバー 19 凹部 20 吸音材 21 クッション材 22 リブプレート 23 溝部 DESCRIPTION OF REFERENCE NUMERALS 1 power shovel 10 cab 11 engine room 12 counter weight 13, 14, 15 window 16, 17, 18 window cover 19 recess 20 sound absorbing material 21 cushion material 22 rib plate 23 groove

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 建設機械のエンジン室の背面に装着され
るカウンタウェイトであって、カウンタウェイトの背面
と左右両側面とにエンジン室へ通じる窓を形成し、窓を
通じて外部からエンジン室内の保守点検ができるように
構成するとともに、各窓に着脱自在な窓カバーを装着し
たことを特徴とする建設機械のカウンタウェイト。
1. A counterweight mounted on the back of an engine room of a construction machine, wherein windows are formed on the back of the counterweight and on both left and right sides thereof to access the engine room. And a detachable window cover attached to each window.
【請求項2】 上記窓カバーの裏面の左右縁部または上
下縁部にバネ性のリブプレートを取付け、カウンタウェ
イトの窓の周囲に窓カバーのリブプレートと嵌合対偶を
構成する溝部を形成し、カウンタウェイトへ窓カバーを
嵌着及び取外し自在とした請求項1記載の建設機械のカ
ウンタウェイト。
2. A resilient rib plate is attached to the left and right edges or upper and lower edges of the back surface of the window cover, and a groove is formed around the window of the counterweight so as to form a mating pair with the rib plate of the window cover. 2. The counterweight of a construction machine according to claim 1, wherein the window cover is freely fitted and detachable from the counterweight.
JP2000092278A 2000-03-29 2000-03-29 Counter weight of construction machine Pending JP2001279722A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000092278A JP2001279722A (en) 2000-03-29 2000-03-29 Counter weight of construction machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000092278A JP2001279722A (en) 2000-03-29 2000-03-29 Counter weight of construction machine

Publications (1)

Publication Number Publication Date
JP2001279722A true JP2001279722A (en) 2001-10-10

Family

ID=18607633

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000092278A Pending JP2001279722A (en) 2000-03-29 2000-03-29 Counter weight of construction machine

Country Status (1)

Country Link
JP (1) JP2001279722A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1462579A1 (en) * 2003-03-24 2004-09-29 Komatsu Ltd. Counterweight for hydraulic shovel
KR100464735B1 (en) * 2001-12-18 2005-01-05 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 apparatus depositing protect cover for operating cab of heavy equipment

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0717853U (en) * 1993-09-07 1995-03-31 住友建機株式会社 Counterweight inspection window for construction machinery
JPH0864012A (en) * 1994-08-19 1996-03-08 Ichikoh Ind Ltd Fixing structure in vehicular device
JPH09302717A (en) * 1996-05-15 1997-11-25 Hitachi Constr Mach Co Ltd Engine cover for construction machinery
JPH11181834A (en) * 1997-12-24 1999-07-06 Yutani Heavy Ind Ltd Counterweight for working machine
JP2000054430A (en) * 1998-08-05 2000-02-22 Hitachi Constr Mach Co Ltd Construction machine cooling device and battery protective cover
JP2001098581A (en) * 1999-09-30 2001-04-10 Komatsu Ltd Industrial machine with sound absorbing material

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0717853U (en) * 1993-09-07 1995-03-31 住友建機株式会社 Counterweight inspection window for construction machinery
JPH0864012A (en) * 1994-08-19 1996-03-08 Ichikoh Ind Ltd Fixing structure in vehicular device
JPH09302717A (en) * 1996-05-15 1997-11-25 Hitachi Constr Mach Co Ltd Engine cover for construction machinery
JPH11181834A (en) * 1997-12-24 1999-07-06 Yutani Heavy Ind Ltd Counterweight for working machine
JP2000054430A (en) * 1998-08-05 2000-02-22 Hitachi Constr Mach Co Ltd Construction machine cooling device and battery protective cover
JP2001098581A (en) * 1999-09-30 2001-04-10 Komatsu Ltd Industrial machine with sound absorbing material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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EP1462579A1 (en) * 2003-03-24 2004-09-29 Komatsu Ltd. Counterweight for hydraulic shovel
US7188865B2 (en) 2003-03-24 2007-03-13 Komatsu Ltd. Counterweight for hydraulic shovel

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