JP3441936B2 - Structure of swivel frame - Google Patents
Structure of swivel frameInfo
- Publication number
- JP3441936B2 JP3441936B2 JP27975897A JP27975897A JP3441936B2 JP 3441936 B2 JP3441936 B2 JP 3441936B2 JP 27975897 A JP27975897 A JP 27975897A JP 27975897 A JP27975897 A JP 27975897A JP 3441936 B2 JP3441936 B2 JP 3441936B2
- Authority
- JP
- Japan
- Prior art keywords
- seat plate
- plate
- side plates
- frame
- bottom plate
- 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.)
- Expired - Fee Related
Links
Landscapes
- Body Structure For Vehicles (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、油圧ショベルなど
建設機械，作業車両の下部走行体の上部に連設した上部
旋回体における旋回フレームの構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a revolving frame in an upper revolving superstructure that is continuously provided above a lower traveling structure of a construction machine such as a hydraulic excavator or a work vehicle.
【０００２】[0002]
【従来の技術】図７は、実開平６−７９８５１号公報に
記載されている従来技術の一実施例旋回フレーム５を示
す平面図である。図において、６は旋回フレーム５のメ
インフレーム、７は左サイドデッキ、８は右サイドデッ
キである。図８は実開平６−７９８５１号公報には記載
されていないが、図７におけるメインフレーム６の要部
拡大詳細平面図である。図において、１１はメインフレ
ーム６の底面板、１２Ｌ，１２Ｒは底面板１１の上面部
に立設された左右一対の側板、１３は前記一対の側板１
２Ｌと１２Ｒの間で前記底面板１１の上面部に溶着され
ている旋回モータ（図示していない）取付用の座板、１
４は座板１３の上面にざぐり施工を行った取付座面、１
５は前記座板１３に穿設した複数の締付ボルト（締付ボ
ルトは図示していない）用ねじ穴、１６は座板１３に対
して図示していない旋回モータのインロー部を嵌込むイ
ンロー用嵌合穴、１７は前記側板１２Ｌと１２Ｒの互い
に相対する内側面にわたって溶着されている左右方向に
直立状態の仕切板である。図９は、図８のＡ−Ａより見
た要部断面図である。図１０は、図８のＢ−Ｂより見た
要部断面図である。2. Description of the Related Art FIG. 7 is a plan view showing a swivel frame 5 according to an embodiment of the prior art disclosed in Japanese Utility Model Publication No. 6-79851. In the figure, 6 is a main frame of the turning frame 5, 7 is a left side deck, and 8 is a right side deck. Although not shown in Japanese Utility Model Laid-Open No. 6-79851, FIG. 8 is an enlarged detailed plan view of a main part of the main frame 6 in FIG. In the figure, 11 is a bottom plate of the main frame 6, 12L and 12R are a pair of left and right side plates standing on the upper surface of the bottom plate 11, and 13 is a pair of the side plates 1.
A seat plate for attaching a turning motor (not shown) welded to the upper surface of the bottom plate 11 between 2L and 12R, 1
4 is a mounting seat surface that has been counterbored on the upper surface of the seat plate 13,
Reference numeral 5 is a screw hole for a plurality of tightening bolts (tightening bolts are not shown) formed in the seat plate 13, and 16 is an inlay for fitting an inlay portion of a turning motor (not shown) into the seat plate 13. The fitting hole 17 is a partition plate which is welded over the inner surfaces of the side plates 12L and 12R facing each other and which is upright in the left-right direction. FIG. 9 is a cross-sectional view of essential parts viewed from AA in FIG. 8. FIG. 10 is a cross-sectional view of the main part viewed from BB of FIG.
【０００３】図７〜図１０に示すように従来技術の一実
施例旋回フレーム５では、前記旋回フレーム５の主要構
成フレーム部分であるメインフレーム６において、左右
一対の側板１２Ｌと１２Ｒが底面板１１の中央部の上面
に前後方向に立設され、前記一対の側板１２Ｌと１２Ｒ
の間で、前記底面板１１の上面部に旋回モータ取付用の
座板１３が溶着されている。そしてまた前記側板１２Ｌ
と１２Ｒの互いに相対するそれぞれ内側面と、前記底面
板１１の上面とにわたって左右方向に直立状態の仕切板
１７が溶着されている。As shown in FIGS. 7 to 10, in a swivel frame 5 according to an embodiment of the prior art, a pair of left and right side plates 12L and 12R is a bottom plate 11 in a main frame 6 which is a main constituent frame portion of the swivel frame 5. Is erected in the front-rear direction on the upper surface of the central portion of the pair of side plates 12L and 12R.
In between, a seat plate 13 for attaching the turning motor is welded to the upper surface of the bottom plate 11. And again the side plate 12L
Partition plates 17 that are upright in the left-right direction are welded to the inner surfaces of the bottom plates 11 and 12R facing each other and the upper surface of the bottom plate 11.
【０００４】[0004]
【発明が解決しようとする課題】従来より建設機械，作
業車両等の上部旋回体の旋回フレームに設けられている
旋回モータ取付用の座板の平面視形状は、旋回モータ取
付用の取付座面を有する程度の大きさのものである。す
なわち前記旋回モータを旋回フレームのメインフレーム
における底面板に対して確実に支持固定できる機能をそ
なえているものであって、前記底面板の中央部の上面に
前後方向に立設された左右一対の側板の間を補強するよ
うにはしていない。そのために前記一対の側板の互いに
相対するそれぞれ内側面と、前記底面板の上面とにわた
って左右方向に直立状態の仕切板を溶着して、前記一対
の側板の間の補強を実施していた。しかし前記仕切板は
前記旋回モータに通じる油圧配管と干渉をおこすおそれ
もあり、前記油圧配管のレイアウトに制限を受けるの
で、上部旋回体の内部構成が複雑になるばかりでなく、
車体内スペースの有効活用に悪影響を及ぼしていた。ま
た前記仕切板の左右両端部の前記両側板内側面に対する
溶接が、前記側板の上方へ向かう方向に延長して施工さ
れている。そのために建設機械の作業時にその振動，揺
動などにより、前記仕切板溶接部に応力集中を受けやす
いので、前記仕切板の左右両端部の形状を応力分散可能
な形状に工夫しなければならなかった。したがって前記
仕切板の製作費及び溶接加工費が高くなり、コスト上、
具合が悪かった。本発明は前記仕切板を不要にし、しか
も前記メインフレームの剛性と配管スペースを確保で
き、かつフレーム構成を簡単にできる旋回フレームの構
造を提供することを目的とする。The plan view shape of a seat plate for mounting a swing motor, which has been conventionally provided on a swing frame of an upper swing body of a construction machine, a work vehicle, or the like, has a mounting seat surface for mounting a swing motor. It has a size of about That is, the swing motor has a function of reliably supporting and fixing it to the bottom plate of the main frame of the swing frame, and includes a pair of left and right erected vertically on the upper surface of the central portion of the bottom plate. It does not try to reinforce the space between the side plates. Therefore, the partition plates in an upright state in the left-right direction are welded to the inner surfaces of the pair of side plates facing each other and the upper surface of the bottom plate to reinforce the space between the pair of side plates. However, since the partition plate may interfere with the hydraulic pipe leading to the swing motor, and the layout of the hydraulic pipe is limited, not only the internal structure of the upper swing body becomes complicated, but also
It had an adverse effect on the effective use of the vehicle interior space. Further, the left and right ends of the partition plate are welded to the inner side surfaces of the both side plates by extending in the upward direction of the side plate. For this reason, stress is likely to be concentrated on the welded part of the partition plate due to vibrations and swings during the operation of the construction machine. Therefore, it is necessary to devise the shape of the left and right ends of the partition plate so that the stress can be dispersed. It was Therefore, the manufacturing cost of the partition plate and the welding process cost increase, and in terms of cost,
I was sick. An object of the present invention is to provide a structure of a revolving frame which does not require the partition plate, can secure the rigidity of the main frame and the piping space, and can simplify the frame structure.
【０００５】[0005]
【課題を解決するための手段】本発明では、左右一対の
側板が底面板の中央部の上面に前後方向に立設され、前
記一対の側板の間で、前記底面板の上面部に旋回モータ
取付用の座板が固設されている建設機械，作業車両等の
上部旋回体の旋回フレームにおいて、前記座板を左右方
向に延設し、前記一対の側板の互いに相対する内側面に
わたって固着せしめた。したがって前記座板の左右両端
部の前記両側板内側面に対する溶接が、前記側板の上方
へ向かう方向に延長して施工されないで前記側板の基部
近くに水平方向に施工されるので、建設機械の振動，揺
動などに起因する応力集中を前記座板の両端部に発生さ
せることなく、旋回フレームの剛性を確保することがで
きる。また前記座板の前端上部と後端上部のうち少くと
も一方に、前記座板の上面より下方へ向けて傾斜するテ
ーパ面部を形成した。それにより前記座板の上面に入っ
てきた雨水又は露水などが、前記テーパ面部を伝って流
れ落ちやすい。すなわち水はけを良くするので、前記座
板の上面などに前記水が溜まるのを防止することができ
る。また前記座板の後端面部が、前記底面板の上面より
後方へ向けて開放状態になるように形成した。すなわち
従来技術のように座板の後方に設けられていた仕切板
を、本発明では不要にしているので、旋回モータなどの
油圧配管が障害物等と干渉をおこさないように合理的に
配管されるとともに、車体内スペースの有効活用をはか
ることができる。According to the present invention, a pair of left and right side plates are erected in the front-rear direction on the upper surface of the central portion of the bottom plate, and a turning motor is mounted on the upper surface of the bottom plate between the pair of side plates. In a revolving frame of an upper revolving structure such as a construction machine or a work vehicle having fixed seat plates, the seat plates are extended in the left-right direction and fixed to the inner surfaces of the pair of side plates facing each other. . Therefore, the welding of the left and right end portions of the seat plate to the inner surface of the both side plates is performed horizontally near the base of the side plate without being extended in the upward direction of the side plate. The rigidity of the revolving frame can be secured without causing stress concentration due to rocking or the like at both ends of the seat plate. Further, a tapered surface portion that is inclined downward from the upper surface of the seat plate is formed on at least one of the upper front end and the upper rear end of the seat plate. As a result, rainwater or dewwater that has entered the upper surface of the seat plate easily flows down along the tapered surface portion. That is, since the drainage is improved, it is possible to prevent the water from being accumulated on the upper surface of the seat plate. Further, the rear end surface portion of the seat plate is formed so as to be open rearward from the upper surface of the bottom plate. That is, since the partition plate provided behind the seat plate as in the prior art is not required in the present invention, hydraulic pipes such as the swing motor are rationally piped so as not to interfere with obstacles. In addition, it is possible to effectively utilize the space inside the vehicle body.
【０００６】[0006]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて詳細に説明する。図１は、本発明の一実施形
態の旋回フレーム１８を示す平面図である。図におい
て、１９は旋回フレーム１８のメインフレーム、２０は
左サイドフレーム、２１は右サイドフレームである。図
２は、図１におけるメインフレーム１９の要部拡大詳細
平面図である。図において、１１’はメインフレーム１
９の底面板、１２’Ｌ，１２’Ｒは底面板１１’の上面
に立設された左右一対の側板、２２は前記一対の側板１
２’Ｌと１２’Ｒのそれぞれ内側面部と前記底面板１
１’の上面部にわたって溶着されている旋回モータ（図
示していないが後述する）取付用の座板、１４’は座板
２２の上面にざぐり施工を行った取付座面、１５’は前
記座板２２に穿設した複数の締付ボルト（締付ボルトは
図示していない）用ねじ穴、１６’は座板２２に対して
図示していない旋回モータのインロー部を嵌込むインロ
ー用嵌合穴である。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a plan view showing a swivel frame 18 according to an embodiment of the present invention. In the figure, 19 is a main frame of the turning frame 18, 20 is a left side frame, and 21 is a right side frame. FIG. 2 is an enlarged detailed plan view of the main part of the main frame 19 in FIG. In the figure, 11 'is the mainframe 1
9, bottom plates 12'L, 12'R are a pair of left and right side plates standing on the top surface of the bottom plate 11 ', and 22 is the pair of side plates 1
Inner side surfaces of 2'L and 12'R and the bottom plate 1
A seat plate for mounting a swivel motor (not shown, but described later) that is welded over the upper surface of 1 ', a mounting seat surface 14' that is countersunk on the upper surface of the seat plate 22, and 15 'is the seat. Screw holes for a plurality of tightening bolts (tightening bolts are not shown) formed in the plate 22, and 16 'is a fitting for fitting a fitting for fitting a fitting of a turning motor (not shown) to the seat plate 22. It's a hole.
【０００７】次に図３は図２のＣ−Ｃより見た要部断面
図であるが、仮想線で示す旋回モータ２３の取付状態を
示す図である。図において、２４は旋回モータ２３の駆
動モータ部、２５は前記駆動モータ部２４が一体型に組
付けられている旋回減速機、２６は旋回減速機２５の取
付用フランジ部、２７は座板２２のテーパ面部である。
なお前記座板２２に対して旋回モータ２３がボルト締付
けされるのであるが、詳しく述べるならば前記座板２２
に対して、旋回減速機２５の取付用フランジ部２６がボ
ルト締付けされる。図４は、図２及び図３における座板
２２の斜視図である。図５は、図３のＤ部拡大図であ
る。なお図５に示す座板２２では、インロー用嵌合穴１
６’の内周下端縁部イに溶接用開先を形成していない
が、底面板１１’の開口穴２８を前記インロー用嵌合穴
１６’より大径に開穿しているので、前記開口穴２８の
上端側内周面部と、前記インロー用嵌合穴１６’の内周
下端側底面部とをすみ肉溶接している。図６は、図５に
おける座板２２のインロー用嵌合穴１６’の内周側下端
縁部イの変形例溶接を示す図である。図６に示す前記溶
接では、座板２２（座板の符号は説明を容易にするため
に図５と同符号を付す）のインロー用嵌合穴１６’（図
５と同符号を付す）の内周下端縁部イに溶接用開先を形
成して、底面板１１’の開口穴２８（図５と同符号を付
す）の内周上端側上面部を溶接している。Next, FIG. 3 is a cross-sectional view of the main part as seen from CC of FIG. 2, showing the mounting state of the turning motor 23 indicated by phantom lines. In the figure, 24 is a drive motor portion of the swing motor 23, 25 is a swing speed reducer in which the drive motor portion 24 is integrally assembled, 26 is a mounting flange portion of the swing speed reducer 25, and 27 is a seat plate 22. Of the taper surface portion.
The turning motor 23 is bolted to the seat plate 22, but if described in detail, the seat plate 22 will be described.
On the other hand, the mounting flange portion 26 of the turning reduction gear 25 is bolted. FIG. 4 is a perspective view of the seat plate 22 in FIGS. 2 and 3. FIG. 5 is an enlarged view of part D of FIG. In the seat plate 22 shown in FIG. 5, the spigot fitting hole 1
Although the welding groove is not formed in the inner peripheral lower end edge a of 6 ', since the opening hole 28 of the bottom plate 11' is opened to a larger diameter than the fitting hole 16 'for the spigot, The upper end inner peripheral surface of the opening hole 28 and the inner peripheral lower end bottom surface of the spigot fitting hole 16 'are fillet welded. FIG. 6 is a diagram showing a modified example welding of the inner peripheral side lower end edge portion a of the fitting hole 16 ′ for the spigot of the seat plate 22 in FIG. In the welding shown in FIG. 6, the spigot fitting hole 16 ′ (denoted by the same reference numeral as in FIG. 5) of the seat plate 22 (the reference numeral of the seat plate is denoted by the same numeral as in FIG. 5 for facilitating the description) A welding groove is formed at the lower edge rim a of the inner periphery, and the upper surface of the inner periphery upper end side of the opening hole 28 (denoted by the same reference numeral as in FIG. 5) of the bottom plate 11 ′ is welded.
【０００８】次に、本発明の一実施形態の旋回フレーム
１８の構造及び作用を図１〜図５について述べる。本実
施形態では、旋回フレーム１８のメインフレーム１９に
おける左右一対の側板１２’Ｌと１２’Ｒの間で、底面
板１１’の上面部に固設される旋回モータ２３取付用の
座板２２を左右方向に延設し、前記一対の側板１２’Ｌ
と１２’Ｒのそれぞれ内側面部と前記底面板１１’の上
面部にわたって溶着せしめた。したがって前記座板２２
の左右両端部の前記両側板１２’Ｌ，１２’Ｒ内側面に
対する溶接が、前記側板１２’Ｌ，１２’Ｒの上方へ向
かう方向に延長して施工されないで前記側板１２’Ｌ，
１２’Ｒの基部近くに水平方向に施工されるので、油圧
ショベル等建設機械の振動，揺動などに起因する応力集
中を前記座板２２の両端部に発生させることなく、旋回
フレーム１８の剛性を確保することができる。Next, the structure and operation of the revolving frame 18 according to one embodiment of the present invention will be described with reference to FIGS. In the present embodiment, a seat plate 22 for mounting the swivel motor 23 fixed to the upper surface of the bottom plate 11 ′ is provided between the pair of left and right side plates 12′L and 12′R of the main frame 19 of the swivel frame 18. The pair of side plates 12'L extending in the left-right direction
And 12'R were welded to the inner surface and the upper surface of the bottom plate 11 '. Therefore, the seat plate 22
Welding of the left and right ends of the side plates 12'L, 12'R to the inner surfaces of the side plates 12'L, 12'R is performed without extending in the upward direction of the side plates 12'L, 12'R.
Since it is installed horizontally near the base of 12'R, the rigidity of the revolving frame 18 does not occur at both ends of the seat plate 22 due to stress concentration due to vibration and swing of construction machinery such as a hydraulic excavator. Can be secured.
【０００９】また前記座板２２の前端上部と後端上部の
うち少くとも一方、例えば前端上部に、前記座板２２の
上面より下方へ向けて傾斜するテーパ面部２７を形成し
た。それにより前記座板２２の上面に入ってきた雨水又
は露水などが、前記テーパ面部２７を伝って流れ落ちや
すい。すなわち水はけを良くするので、前記座板２２の
上面などに前記水が溜まるのを防止することができる。
また前記座板２２の後端面部が、前記底面板１１’の上
面より後方へ向けて開放状態になるように形成した。す
なわち図８〜図１０に示す従来技術のように座板１１の
後方に設けられていた仕切板１７を不要にしているの
で、旋回モータ２３などの油圧配管（図示していない）
が障害物等と干渉をおこさないように合理的に配管され
るとともに、車体（図示していない建設機械の上部旋回
体をいう）内スペースの有効活用をはかることができ
る。Further, at least one of the front end upper part and the rear end upper part of the seat plate 22, for example, the front end upper part, is formed with a taper surface portion 27 inclined downward from the upper surface of the seat plate 22. As a result, rainwater or dewwater that has entered the upper surface of the seat plate 22 easily flows down along the tapered surface portion 27. That is, since the drainage is improved, it is possible to prevent the water from being accumulated on the upper surface of the seat plate 22.
Further, the rear end surface portion of the seat plate 22 is formed to be open rearward from the upper surface of the bottom plate 11 '. That is, since the partition plate 17 provided at the rear of the seat plate 11 as in the prior art shown in FIGS. 8 to 10 is unnecessary, hydraulic pipes (not shown) such as the turning motor 23 are provided.
Is rationally piped so as not to interfere with obstacles and the like, and it is possible to effectively utilize the space inside the vehicle body (referred to as the upper swing body of the construction machine (not shown)).
【００１０】[0010]
【発明の効果】本発明では、旋回フレームのメインフレ
ームにおける左右一対の側板の間で、底面板の上面部に
固設される旋回モータ取付用の座板を左右方向に延設
し、前記一対の側板の互いに相対するそれぞれ内側面部
と、前記底面板の上面部にわたって前記座板を溶着せし
めた。したがって前記座板の左右両端部の前記両側板内
側面に対する溶接が、前記側板の上方へ向かう方向に延
長して施工されないで前記側板の基部近くに水平方向に
施工されるので、建設機械の振動，揺動などに起因する
応力集中を前記座板の両端部に発生させることなく、旋
回フレームの剛性を確保することができる。また前記座
板の前端上部と後端上部のうち少くとも一方に、前記座
板の上面より下方へ向けて傾斜するテーパ面部を形成し
た。それにより前記座板の上面に入ってきた雨水又は露
水などが、前記テーパ面部を伝って流れ落ちやすい。す
なわち水はけを良くするので、前記座板の上面などに前
記水が溜まるのを防止することができる。また前記座板
の後端面部が、前記底面板の上面より後方へ向けて開放
状態になるように形成した。すなわち従来技術のように
座板の後方に設けられていた仕切板を、本発明では不要
にしているので、部品点数が減って構造も簡単となり、
旋回モータなどの油圧配管が障害物等と干渉をおこさな
いように合理的に配管されるとともに、車体内スペース
の有効活用をはかることができる。According to the present invention, between the pair of left and right side plates of the main frame of the revolving frame, the seat plate for mounting the revolving motor, which is fixedly mounted on the upper surface of the bottom plate, is extended in the left-right direction, The seat plate was welded to the inner surface portions of the side plates facing each other and the upper surface portion of the bottom plate. Therefore, the welding of the left and right end portions of the seat plate to the inner surface of the both side plates is performed horizontally near the base of the side plate without being extended in the upward direction of the side plate. The rigidity of the revolving frame can be secured without causing stress concentration due to rocking or the like at both ends of the seat plate. Further, a tapered surface portion that is inclined downward from the upper surface of the seat plate is formed on at least one of the upper front end and the upper rear end of the seat plate. As a result, rainwater or dewwater that has entered the upper surface of the seat plate easily flows down along the tapered surface portion. That is, since the drainage is improved, it is possible to prevent the water from being accumulated on the upper surface of the seat plate. Further, the rear end surface portion of the seat plate is formed so as to be open rearward from the upper surface of the bottom plate. That is, since the partition plate provided behind the seat plate as in the prior art is not necessary in the present invention, the number of parts is reduced and the structure is simplified,
Hydraulic pipes such as a turning motor are rationally arranged so as not to interfere with obstacles, and the space inside the vehicle body can be effectively used.
【図１】本発明の一実施形態の旋回フレームを示す平面
図である。FIG. 1 is a plan view showing a swivel frame according to an embodiment of the present invention.
【図２】図１におけるメインフレームの要部拡大詳細平
面図である。FIG. 2 is an enlarged detailed plan view of a main part of the main frame in FIG.
【図３】図２のＣ−Ｃより見た要部断面図である。FIG. 3 is a cross-sectional view of a main part viewed from CC of FIG.
【図４】図２及び図３における座板の斜視図である。4 is a perspective view of the seat plate in FIGS. 2 and 3. FIG.
【図５】図３のＤ部拡大図である。5 is an enlarged view of part D in FIG.
【図６】図５における座板の変形例溶接を示す図であ
る。FIG. 6 is a view showing a modified welding of the seat plate in FIG.
【図７】従来技術の一実施例旋回フレームを示す平面図
である。FIG. 7 is a plan view showing a swivel frame according to an embodiment of the prior art.
【図８】図７におけるメインフレームの要部拡大詳細平
面図である。FIG. 8 is an enlarged detailed plan view of a main part of the main frame in FIG.
【図９】図８のＡ−Ａより見た要部断面図である。9 is a cross-sectional view of a main part seen from AA in FIG.
【図１０】図８のＢ−Ｂより見た要部断面図である。10 is a cross-sectional view of a main part seen from BB in FIG.
５，１８ 旋回フレーム ６，１９ メインフレーム １１，１１’ 底面板 １２Ｌ，１２’Ｌ，１２Ｒ，１２’Ｒ 側板 １３，２２ 座板 １４，１４’ 取付座面 １６，１６’ インロー用嵌合穴 １７ 仕切板 ２３ 旋回モータ ２７ テーパ面部 5,18 swivel frame 6,19 Mainframe 11, 11 'bottom plate 12L, 12'L, 12R, 12'R side plate 13,22 seat plate 14,14 'mounting seat surface 16,16 'Mating hole for spigot 17 partition boards 23 Swing motor 27 Tapered surface
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平９−158252（ＪＰ，Ａ) 実開 平６−79851（ＪＰ，Ｕ) 実開 昭62−44964（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) E02F 9/08 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-9-158252 (JP, A) Actually open 6-79851 (JP, U) Actually open Sho 62-44964 (JP, U) (58) Field (Int.Cl. 7 , DB name) E02F 9/08
Claims (3)
に前後方向に立設され、前記一対の側板の間で、前記底
面板の上面部に旋回モータ取付用の座板が固設されてい
る建設機械，作業車両等の上部旋回体の旋回フレームに
おいて、前記座板を左右方向に延設し、前記一対の側板
の互いに相対する内側面にわたって固着せしめたことを
特徴とする旋回フレームの構造。1. A pair of left and right side plates are erected in the front-rear direction on the upper surface of the central portion of the bottom plate, and a seat plate for mounting a turning motor is fixedly provided on the upper surface of the bottom plate between the pair of side plates. In a revolving frame for an upper revolving structure of a construction machine, a working vehicle, etc., the seat plate is extended in the left-right direction, and is fixed over inner surfaces of the pair of side plates facing each other. Construction.
くとも一方に、前記座板の上面より下方へ向けて傾斜す
るテーパ面部を形成したことを特徴とする請求項１記載
の旋回フレームの構造。2. The swivel according to claim 1, wherein at least one of a front end upper portion and a rear end upper portion of the seat plate is formed with a tapered surface portion which is inclined downward from an upper surface of the seat plate. Frame structure.
面より後方へ向けて開放状態に形成されていることを特
徴とする請求項１記載の旋回フレームの構造。3. The structure of the revolving frame according to claim 1, wherein a rear end surface portion of the seat plate is formed to be open rearward from an upper surface of the bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27975897A JP3441936B2 (en) | 1997-09-27 | 1997-09-27 | Structure of swivel frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27975897A JP3441936B2 (en) | 1997-09-27 | 1997-09-27 | Structure of swivel frame |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11100862A JPH11100862A (en) | 1999-04-13 |
| JP3441936B2 true JP3441936B2 (en) | 2003-09-02 |
Family
ID=17615504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27975897A Expired - Fee Related JP3441936B2 (en) | 1997-09-27 | 1997-09-27 | Structure of swivel frame |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3441936B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017198566A1 (en) | 2016-05-19 | 2017-11-23 | Caterpillar Sarl | Shovel-type construction machine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4984923B2 (en) * | 2007-01-30 | 2012-07-25 | コベルコ建機株式会社 | Construction machine upper frame |
| KR102088066B1 (en) * | 2013-12-23 | 2020-03-11 | 두산인프라코어 주식회사 | Main frame structure of construction machinery |
-
1997
- 1997-09-27 JP JP27975897A patent/JP3441936B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017198566A1 (en) | 2016-05-19 | 2017-11-23 | Caterpillar Sarl | Shovel-type construction machine |
| KR20190009761A (en) | 2016-05-19 | 2019-01-29 | 캐터필러 에스에이알엘 | Shovel type construction machine |
| US10544564B2 (en) | 2016-05-19 | 2020-01-28 | Caterpillar Sarl | Shovel-type construction machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11100862A (en) | 1999-04-13 |
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