JPH0682156U - Lower frame structure - Google Patents
Lower frame structureInfo
- Publication number
- JPH0682156U JPH0682156U JP3061993U JP3061993U JPH0682156U JP H0682156 U JPH0682156 U JP H0682156U JP 3061993 U JP3061993 U JP 3061993U JP 3061993 U JP3061993 U JP 3061993U JP H0682156 U JPH0682156 U JP H0682156U
- Authority
- JP
- Japan
- Prior art keywords
- frame
- support
- chrome
- lower frame
- hole
- 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.)
- Granted
Links
Landscapes
- Body Structure For Vehicles (AREA)
Abstract
(57)【要約】
［目的］ 油圧ショベルの走行中にアッパロ−ラは、ク
ロ−ラの張力あるいは振動、衝撃による荷重を受け、ア
ッパロ−ラ用サポ−トの溶接部に大きなモ−メント荷重
を与える。このモ−メント荷重により、クロ−ラフレ−
ム上面部に局部的な強度不足が発生し、歪みが起きてサ
ポ−トの倒れを生じる事故が発生する。この問題点を解
決する。
［構成］ 本考案では、クロ−ラフレ−ム上面部の、サ
ポ−ト取付け位置に、そのサポ−トを垂直に貫挿できる
穴を開穿し、一方、サポ−トの長さを、クロ−ラフレ−
ム側面の下端部に配設したプレ−トに達する長さに形成
し、そのサポ−トを上記穴に貫挿し、且つクロ−ラフレ
−ムの内側面に対して溶着して、構成した。
(57) [Abstract] [Purpose] While the hydraulic excavator is running, the upper roller receives a load due to the tension, vibration, or impact of the crawler, and a large moment load is applied to the welded part of the upper roller support. give. Due to this moment load
There is a local lack of strength on the top surface of the frame, which causes distortion and an accident in which the support falls. This problem is solved. [Structure] In the present invention, a hole through which the support is vertically inserted is opened at the support mounting position on the upper surface of the chrome frame, while the length of the support is changed to -Raffle-
The plate is formed to have a length reaching the plate disposed at the lower end of the side surface of the frame, the support is inserted into the hole and welded to the inner surface of the chrome frame.
Description
【０００１】[0001]
本考案は、主として油圧ショベルなど建設車両、作業車両の下部走行体のロワ フレ−ムの構造に関する。 The present invention mainly relates to a structure of a lower frame of a lower traveling body of a construction vehicle such as a hydraulic excavator or a work vehicle.
【０００２】[0002]
図３は、油圧ショベルの下部走行体１の要部側面図である。図において、２は ロワフレ−ム、３はアッパロ−ラ、４はクロ−ラ、５はロワフレ−ム２のセンタ フレ−ム、６は同じくクロ−ラフレ−ム、７はアッパロ−ラ３のサポ−ト、８は クロ−ラフレ−ム６内に配設した補強リブである。図４は、図３のＡ−Ａより見 た下部走行体１の要部断面図である。図において、９はクロ−ラフレ−ム６の上 面部、１０はクロ−ラフレ−ム６側面の下端部に配設したプレ−ト、１１はクロ −ラフレ−ム６の内側面である。図３及び図４に示すように、センタフレ−ム５ の側部にクロ−ラフレ−ム６を連結し、そのクロ−ラフレ−ム６の上面部９に複 数個のサポ−ト７を垂直に溶着して、アッパロ−ラ３を取付け、クロ−ラ４を保 持している。一方クロ−ラフレ−ム６の内部では、サポ−ト７の取付け部付近よ り内側面１１にわたって、補強リブ８を設けている。 FIG. 3 is a side view of a main part of the lower traveling body 1 of the hydraulic excavator. In the figure, 2 is a lower frame, 3 is an upper roller, 4 is a chlora, 5 is a lower frame 2 center frame, 6 is also a same chrome frame, and 7 is an upper roller 3 support. Reference numerals 8 and 8 are reinforcing ribs arranged in the black frame 6. FIG. 4 is a cross-sectional view of essential parts of the lower traveling body 1 as seen from AA in FIG. In the figure, 9 is the upper surface of the chrome frame 6, 10 is a plate disposed at the lower end of the side of the chrome frame 6, and 11 is the inner surface of the chrome frame 6. As shown in FIGS. 3 and 4, the color frame 6 is connected to the side of the center frame 5, and a plurality of supports 7 are vertically attached to the upper surface 9 of the color frame 6. The upper roller 3 is attached and the crow roller 4 is held by welding. On the other hand, inside the crawler frame 6, a reinforcing rib 8 is provided over the inner side surface 11 from the vicinity of the mounting portion of the support 7.
【０００３】[0003]
油圧ショベルの走行中にアッパロ−ラは、クロ−ラの張力あるいは振動、衝撃 による荷重を受け、アッパロ−ラ用サポ−トとクロ−ラフレ−ム上面部との溶接 部周辺に大きなモ−メント荷重を与える。ところが従来のロワフレ−ムは、クロ −ラフレ−ムの上面部にサポ−トを垂直に配置し、このサポ−トと上面部とで形 成する稜の隅肉溶接をしているだけである。したがって、その溶接範囲は狭く、 短い溶接部で上記モ−メント荷重を受けるため、溶接部の応力は高く、またクロ −ラフレ−ムの上面部に局部的な高応力部が生じ、溶接部に亀裂を発生し、脱落 事故をおこすことがあった。本考案は、上記の問題点を解決することを目的とす る。 While the hydraulic excavator is running, the upper roller receives a load due to tension, vibration, or impact of the crawler, and a large moment is generated around the weld between the upper roller support and the upper surface of the crawler frame. Give a load. However, in the conventional lower frame, the support is vertically arranged on the upper surface of the chrome frame, and the fillet welding of the ridge formed by the support and the upper surface is only performed. . Therefore, the welding range is narrow and the above moment load is applied to a short weld, so the stress in the weld is high, and a local high stress portion is generated on the upper surface of the color frame, and There were cases where cracks occurred and a fall accident occurred. The present invention aims to solve the above problems.
【０００４】[0004]
本考案のロワフレ−ムは、クロ−ラフレ−ム上面部の、サポ−ト取付け位置に 、そのサポ−トを垂直に貫挿できる穴を開穿し、一方、サポ−トの長さを、クロ −ラフレ−ム側面の下端部に配設したプレ−トに達する長さに形成し、そのサポ −トを上記穴に貫挿し、且つクロ−ラフレ−ムの内側面に対して溶着した。 The lower frame of the present invention has a hole on the upper surface of the chrome frame at the support mounting position, through which the support can be vertically inserted, while the length of the support is It was formed to a length reaching the plate disposed at the lower end of the side surface of the chrome frame, and the support was inserted into the hole and welded to the inner surface of the chrome frame.
【０００５】[0005]
以下、本考案の実施例を図面に基づいて詳細に説明する。図１は、本考案のロ ワフレ−ム１２の一部切欠き側面図である。図において、従来技術と同一構成要 素を使用するものについては同符号を付す。１３はセンタフレ−ム、１４はクロ −ラフレ−ム、１５はアッパロ−ラ３のサポ−トである。図２は、図１のＢ−Ｂ より見たクロ−ラフレ−ム１２の要部断面図である。図において、１６はクロ− ラフレ−ム１４の上面部、１７は同じく内側面、１８はプレ−ト、１９はサポ− ト１５を垂直に貫挿できるように上面部１６に開穿した穴である。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a partially cutaway side view of a lower frame 12 of the present invention. In the figure, the same components as those in the prior art are denoted by the same reference numerals. Reference numeral 13 is a center frame, 14 is a black frame, and 15 is a support for the upper roller 3. FIG. 2 is a cross-sectional view of the main part of the chrome frame 12 as seen from BB in FIG. In the figure, 16 is an upper surface of the black frame 14, 17 is an inner surface of the same, 18 is a plate, and 19 is a hole opened in the upper surface 16 so that the support 15 can be vertically inserted. is there.
【０００６】 次に、本考案のロワフレ−ム１２の構成を図１及図２について述べる。本考案 のロワフレ−ム１２は、センタフレ−ム１３の側部にクロ−ラフレ−ム１４を連 結し、またサポ−ト１５を、クロ−ラフレ−ム１４の上面部１６に開穿した穴１ ９に垂直に貫挿し、クロ−ラフレ−ム１４側面の下端部に配設したプレ−ト１８ 及び内側面１７に対して溶着している。Next, the structure of the lower frame 12 of the present invention will be described with reference to FIGS. 1 and 2. The lower frame 12 of the present invention has a center frame 13 and a chrome frame 14 connected to the side of the frame, and a support 15 is a hole formed in the upper surface 16 of the chrome frame 14. The plate 18 is vertically inserted into the plate 19 and is welded to the plate 18 and the inner surface 17 arranged at the lower end of the side surface of the chrome frame 14.
【０００７】 次に、本考案のロワフレ−ム１２の作用について述べる。本考案では、アッパ ロ−ラ３のサポ−ト１５を、クロ−ラフレ−ム１４の上面部１６に開穿した穴１ ９に貫挿し、内側面１７及びプレ−ト１８に対して溶着した。したがって、前述 したサポ−ト１５にかかるモ−メント荷重は、サポ−ト１５とクロ−ラフレ−ム １４との溶接部、すなわちサポ−ト１５と、クロ−ラフレ−ム１４の上面部１６ 、内側面１７及びプレ−ト１８との溶接部全周にわたる広い範囲で受けることに なり、応力は分散されて下がる。これにより、溶接部及びその周辺の強度的な問 題がなくなる。Next, the operation of the lower frame 12 of the present invention will be described. In the present invention, the support 15 of the upper roller 3 is inserted into the hole 19 formed in the upper surface 16 of the chrome frame 14 and welded to the inner surface 17 and the plate 18. . Therefore, the moment load applied to the above-mentioned support 15 is a welded portion between the support 15 and the crow frame 14, that is, the support 15 and the upper surface portion 16 of the chrome frame 14. Since it is received in a wide range over the entire circumference of the welded portion between the inner side surface 17 and the plate 18, the stress is dispersed and lowered. This eliminates the problem of strength at the weld and its surroundings.
【０００８】[0008]
本考案のロワフレ−ムでは、アッパロ−ラのサポ−トを、クロ−ラフレ−ムの 上面部を貫挿して、下端部に配設したプレ−トに当て、内側面に対して溶着した ので、溶接長さも大きく取れ、溶接部の強度アップを図ることができる。またク ロ−ラフレ−ムの溶接部周辺の応力集中もなくなり、強度的な問題がなくなる。 In the lower frame of the present invention, the support of the upper roller is inserted through the upper surface of the crawler frame, applied to the plate arranged at the lower end, and welded to the inner surface. Also, the welding length can be made large, and the strength of the welded portion can be increased. In addition, the stress concentration around the welded portion of the crawler frame is also eliminated, and the strength problem is eliminated.
【図１】本考案のロワフレ−ムの一部切欠き側面図であ
る。FIG. 1 is a partially cutaway side view of a lower frame of the present invention.
【図２】図１のＢ−Ｂより見たロワフレ−ムの要部断面
図である。FIG. 2 is a cross-sectional view of a main part of the lower frame viewed from BB of FIG.
【図３】油圧ショベルの下部走行体の要部側面図であ
る。FIG. 3 is a side view of a main part of a lower traveling body of the hydraulic excavator.
【図４】図３のＡ−Ａより見た下部走行体の要部断面図
である。FIG. 4 is a cross-sectional view of essential parts of the lower traveling body viewed from AA in FIG.
１ 下部走行体 ２，１２ ロワフレ−ム ３ アッパロ−ラ ４ クロ−ラ ５，１３ センタフレ−ム ６，１４ クロ−ラフレ−ム ７，１５ サポ−ト ９，１６ 上面部 １０，１８ プレ−ト １１，１７ 内側面 １９ 穴 1 Lower traveling body 2,12 Lower frame 3 Upper roller 4 Crawler 5,13 Center frame 6,14 Crawler frame 7,15 Support 9,16 Upper surface part 10,18 Plate 11 , 17 inner surface 19 holes
Claims (1)
ラフレ−ムをそれぞれ溶接して一体構造とし、また上記
クロ−ラフレ−ムの上部で、その前後方向の中央付近
に、少なくとも一ヶ所、アッパロ−ラ取付け用のサポ−
トを垂直に配設しているロワフレ−ムにおいて、クロ−
ラフレ−ム上面部の、サポ−ト取付け位置に、そのサポ
−トを垂直に貫挿できる穴を開穿し、一方、サポ−トの
長さを、クロ−ラフレ−ム側面の下端部に配設したプレ
−トに達する長さに形成し、そのサポ−トを上記穴に貫
挿し、且つクロ−ラフレ−ムの内側面に対して溶着した
ことを特徴とするロワフレ−ムの構造。1. A black frame is provided on both left and right sides of the center frame.
The raframes are welded together to form a unitary structure, and at the upper part of the above-mentioned crawler frame, in the vicinity of the center in the front-rear direction, at least one support for mounting the upper roller is provided.
In the lower frame in which the
At the support mounting position on the top surface of the raframe, a hole is opened to allow the support to vertically penetrate, while the length of the support is set to the lower end of the side surface of the croraframe. A lower frame structure, characterized in that the lower frame is formed to a length reaching the arranged plate, the support is inserted into the hole, and is welded to the inner surface of the color frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3061993U JP2583664Y2 (en) | 1993-05-13 | 1993-05-13 | Lower frame structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3061993U JP2583664Y2 (en) | 1993-05-13 | 1993-05-13 | Lower frame structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0682156U true JPH0682156U (en) | 1994-11-25 |
| JP2583664Y2 JP2583664Y2 (en) | 1998-10-27 |
Family
ID=12308883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3061993U Expired - Fee Related JP2583664Y2 (en) | 1993-05-13 | 1993-05-13 | Lower frame structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2583664Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008080951A (en) * | 2006-09-27 | 2008-04-10 | Kubota Corp | Carrier roller support structure for crawler type traveling apparatus |
-
1993
- 1993-05-13 JP JP3061993U patent/JP2583664Y2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008080951A (en) * | 2006-09-27 | 2008-04-10 | Kubota Corp | Carrier roller support structure for crawler type traveling apparatus |
| JP4633028B2 (en) * | 2006-09-27 | 2011-02-16 | 株式会社クボタ | Carrier roller support structure of crawler type traveling device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2583664Y2 (en) | 1998-10-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |