JP2007169917A - Step structure of construction machine - Google Patents
Step structure of construction machine Download PDFInfo
- Publication number
- JP2007169917A JP2007169917A JP2005365380A JP2005365380A JP2007169917A JP 2007169917 A JP2007169917 A JP 2007169917A JP 2005365380 A JP2005365380 A JP 2005365380A JP 2005365380 A JP2005365380 A JP 2005365380A JP 2007169917 A JP2007169917 A JP 2007169917A
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- JP
- Japan
- Prior art keywords
- handrail
- construction machine
- swing body
- upper swing
- fixed
- Prior art date
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- 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
- E02F9/0833—Improving access, e.g. for maintenance, steps for improving driver's access, handrails
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Component Parts Of Construction Machinery (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
本発明は建設機械のステップ構造に関するものであり、特に、上部旋回体に昇降用のステップを設けるとともに該ステップの近傍にハンドレールを取り付けた建設機械のステップ構造に関するものである。 The present invention relates to a step structure of a construction machine, and more particularly to a step structure of a construction machine in which a step for raising and lowering is provided on an upper swing body and a handrail is attached in the vicinity of the step.
従来、此種建設機械は上部旋回体にエンジンや油圧装置などの機関部が搭載され、これらの機関部はハウスカバーにて被蔽されている。したがって、機関部を点検調整するためにハウスカバーの上面へ昇降することがあり、上部旋回体にステップを設けて昇降の容易化を図っている。また、昇降する作業者に不安を与えないようにステップの近傍にハンドレールを取り付けたものも多い。 Conventionally, in this type of construction machine, an engine part such as an engine or a hydraulic device is mounted on an upper rotating body, and these engine parts are covered with a house cover. Therefore, the engine unit may be moved up and down to the upper surface of the house cover in order to check and adjust, and the upper swing body is provided with a step to facilitate the lifting and lowering. In many cases, a handrail is attached in the vicinity of the step so as not to give anxiety to the operator who moves up and down.
図４は、一般的な建設機械のステップ構造を示し、上部旋回体の下部フレーム１にステップ２が設けられ、該ステップ２の背面部が溶接にて前記下部フレーム１に固定されている。このステップ２の近傍にハンドレール３が配設され、該ハンドレール３の下側先端部３ａがクランプ４により前記下部フレーム１へボルト締めにて取り付けられている。 FIG. 4 shows a step structure of a general construction machine, in which a step 2 is provided in a lower frame 1 of an upper swing body, and a back portion of the step 2 is fixed to the lower frame 1 by welding. A handrail 3 is disposed in the vicinity of the step 2, and a lower end 3 a of the handrail 3 is attached to the lower frame 1 with a clamp 4 by bolting.
ハンドレールの取付構造としては、ハンドレールの下側先端部を左右何れか一方向に屈曲してボルト締め固定し、該下側先端部から上方へ離間した上側部に上記とは反対方向へブラケットを介してボルト締め固定することにより、ハンドレールの支持を分散させた構成が知られている（例えば、特許文献１参照）。 As for the handrail mounting structure, the lower end of the handrail is bent in either one of the left and right directions and fixed with bolts, and the bracket is mounted in the opposite direction to the upper part spaced upward from the lower end. A structure in which the support of the handrail is dispersed by bolting and fixing via a bolt is known (for example, see Patent Document 1).
また、ハンドレールの下側先端部を下部フレームの下面に沿って後方向へほぼ直角に屈曲させ、この屈曲部の両側をクランプにて固定し、ハンドレールの上側先端部を左右方向へほぼ直角に屈曲させ、この屈曲部の両側をクランプにて固定する構成も知られている（例えば、特許文献２参照）。
建設機械のステップは、作業者の足掛けとなるため、上部旋回体の下部フレームから突出して設けられている。したがって、狭隘な場所で作業している場合に、走行や旋回動作によってステップが周囲の他物に接触することがあり、この結果、ステップが破損して使用できなくなることがある。 The steps of the construction machine are provided so as to protrude from the lower frame of the upper swing body so as to be a footrest for the worker. Therefore, when working in a confined place, the step may come into contact with surrounding objects due to traveling or turning motion, and as a result, the step may be damaged and cannot be used.
然るときは、破損したステップを新しいステップに交換するが、図４に示したステップならびに特許文献１および特許文献２のステップは、何れも溶接にて下部フレームに固定されているため取り外しが困難であり、また、新しいステップも再度溶接にて取り付けることになる。 In that case, the damaged step is replaced with a new step. However, since the steps shown in FIG. 4 and the steps of Patent Document 1 and Patent Document 2 are all fixed to the lower frame by welding, it is difficult to remove them. In addition, a new step is attached by welding again.
したがって、ステップの交換作業が煩雑であり、溶接部周辺が汚損されるので再塗装も必要となる。また、ステップの近傍に取り付けられたハンドレールも同様に、クランプにて固定された取付部が他物に接触しやすい。 Accordingly, the step replacement work is complicated, and the periphery of the welded portion is soiled, so repainting is also necessary. Similarly, the handrail attached in the vicinity of the step is likely to come into contact with other objects at the attachment portion fixed by the clamp.
そこで、建設機械のステップの交換が容易かつ迅速に行えるようにするとともに、ステップの近傍に設けたハンドレールの取付部を保護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、本発明はこの課題を解決することを目的とする。 Accordingly, there is a technical problem to be solved in order to easily and quickly replace the step of the construction machine and to protect the handrail mounting portion provided in the vicinity of the step. Aims to solve this problem.
本発明は上記目的を達成するために提案されたものであり、請求項１記載の発明は、上部旋回体に昇降用のステップを設けるとともに該ステップの近傍にハンドレールを取り付けた建設機械において、前記ステップは上部旋回体にボルトにて固定し、かつ、前記ハンドレールの取付部を被蔽するカバーを兼ねていることを特徴とする建設機械のステップ構造を提供する。 The present invention has been proposed to achieve the above object, and the invention according to claim 1 is a construction machine in which a step for raising and lowering is provided on the upper swing body and a handrail is attached in the vicinity of the step. A step structure of a construction machine is provided, wherein the step is fixed to the upper swing body with a bolt and serves also as a cover for covering the attachment portion of the handrail.
この構成によれば、ステップがボルト締め構造であるので、取り付けおよび取り外しの作業が容易であり、万一、ステップが破損した場合でも交換が容易に行える。また、ステップがハンドレールの取付部のカバーを兼ねているので、該取付部がステップによって被蔽され、該取付部が他物に接触するのを防止できる。 According to this configuration, since the step has a bolt tightening structure, the work of attachment and removal is easy, and even if the step is broken, it can be easily replaced. In addition, since the step also serves as a cover for the attachment portion of the handrail, the attachment portion is covered by the step, and the attachment portion can be prevented from coming into contact with other objects.
請求項２記載の発明は、上部に踏み面とハンドレール用の切り欠き部を設け、前部および側部に被蔽面を有することを特徴とする請求項１記載の建設機械のステップ構造を提供する。 According to a second aspect of the present invention, there is provided a step structure for a construction machine according to the first aspect, wherein a tread surface and a notch portion for a handrail are provided at an upper portion and a covering surface is provided at a front portion and a side portion. provide.
この構成によれば、ステップの上部に設けた踏み面は作業者の足掛けとなり、切り欠き部はハンドレールの逃げとなって立ち上がり部分が上方向へ突出する。 According to this configuration, the tread surface provided at the top of the step serves as a footrest for the operator, and the notch portion serves as the escape of the handrail, and the rising portion projects upward.
本発明は、上述したように、ステップをボルトにて固定するため脱着作業が簡単であり、ステップの交換が容易に行える。また、ハンドレールの取付部を被蔽するので、該取付部が他物に接触するのを防止でき、外観も良好となって商品価値が向上する。 As described above, since the present invention fixes the steps with bolts, the detaching operation is simple, and the steps can be easily replaced. Moreover, since the attachment part of a handrail is covered, it can prevent that this attachment part contacts another thing, an external appearance becomes favorable, and a commercial value improves.
以下、本発明に係る建設機械のステップ構造について、好適な実施例をあげて説明する。建設機械のステップの交換が容易かつ迅速に行えるようにするとともに、ステップの近傍に設けたハンドレールの取付部を保護するという目的を達成するために、本発明は上部旋回体に昇降用のステップを設けるとともに該ステップの近傍にハンドレールを取り付けた建設機械において、前記ステップは上部旋回体にボルトにて固定し、かつ、前記ハンドレールの取付部を被蔽するカバーを兼ねるように形成することにより実現した。 Hereinafter, the step structure of the construction machine according to the present invention will be described with reference to preferred embodiments. In order to enable easy and quick exchange of construction machine steps and to protect the handrail mounting portion provided in the vicinity of the steps, the present invention provides a step for raising and lowering the upper swing body. In the construction machine in which the handrail is attached in the vicinity of the step, the step is fixed to the upper swing body with a bolt and is formed so as to serve as a cover for covering the attachment portion of the handrail. Realized by.
図１は建設機械の一例として油圧ショベル１０を示し、下部走行体１１の上に旋回機構１２を介して上部旋回体１３が旋回自在に載置されている。上部旋回体１３にはその前方一側部にキャブ１４が設けられ、且つ、前方中央部にブーム１５が俯仰可能に取り付けられている。更に、ブーム１５の先端にアーム１６が上下回動自在に取り付けられ、該アーム１６の先端にバケット１７が取り付けられている。 FIG. 1 shows a hydraulic excavator 10 as an example of a construction machine, and an upper swing body 13 is mounted on a lower traveling body 11 via a swing mechanism 12 so as to be rotatable. The upper swing body 13 is provided with a cab 14 on one front side thereof, and a boom 15 is attached to the front center portion so as to be able to be raised and lowered. Further, an arm 16 is attached to the tip of the boom 15 so as to be rotatable up and down, and a bucket 17 is attached to the tip of the arm 16.
そして、上部旋回体１３の後部にエンジン１８を搭載し、ハウスカバー１９にて被蔽する。また、上部旋回体１３の前方他側部にツールボックス２０が設けられており、上部旋回体１３の下部フレーム２１の前端部に、機体から前方へステップ２２を突設してある。さらに、前記ステップ２２の近傍からツールボックス２０およびハウスカバー１９の前部にかけて、それらの右側部（図１に於いて紙面の手前側）にハンドレール２３が取り付けられている。 Then, an engine 18 is mounted on the rear part of the upper swing body 13 and covered with a house cover 19. In addition, a tool box 20 is provided on the other front side of the upper swing body 13, and a step 22 projects from the front side of the lower frame 21 of the upper swing body 13 to the front. Further, a handrail 23 is attached from the vicinity of the step 22 to the front part of the tool box 20 and the house cover 19 on the right side thereof (the front side of the page in FIG. 1).
図２および図３に示すように、該ステップ２２は下部が開放された箱形に形成され、上部２２ａに踏み面２４とハンドレール用の切り欠き部２５が設けられている。また、該ステップ２２の前部２２ｂおよび側部２２ｃに被蔽面を有し、上部旋回体１３の下部フレーム２１に固設されたブラケット２６へ、該ステップ２２がボルト２７にて着脱可能に固定され、ハンドレール２３の取付部２８を被蔽するカバーを兼ねている。 As shown in FIGS. 2 and 3, the step 22 is formed in a box shape with the lower part opened, and a tread surface 24 and a handrail cutout part 25 are provided in the upper part 22a. Further, the step 22 is fixed to the bracket 26 fixed to the lower frame 21 of the upper swing body 13 with a bolt 27 so as to be detachably attached to the front portion 22b and the side portion 22c of the step 22. It also serves as a cover that covers the mounting portion 28 of the handrail 23.
前記踏み面２４は作業者が上部旋回体１３に昇降する際の足掛けとなり、凹凸形状あるいは切欠形状など滑り防止対策が施されている。また、前記切り欠き部２５はハンドレール２３の逃げとなり、ハンドレール２３の立ち上がり部分２３ａが該切り欠き部２５から上方向へ突出する。すなわち、図４に示したハンドレールの下側先端部３ａがクランプ４にて固定されている部分が、該ステップ２２によって被蔽されている。 The tread surface 24 serves as a footrest when the operator ascends and descends to the upper swing body 13, and is provided with anti-slip measures such as an uneven shape or a notch shape. Further, the notch 25 serves as a relief for the handrail 23, and the rising portion 23 a of the handrail 23 protrudes upward from the notch 25. That is, the portion where the lower end 3 a of the handrail shown in FIG. 4 is fixed by the clamp 4 is covered by the step 22.
このように、当該ステップ２２がボルト締め構造で固定されているため、該ステップ２２の取り付けおよび取り外しの作業が容易であり、万一、ステップ２２が破損した場合でも交換が容易に行える。また、ステップ２２がハンドレール２３の取付部２７のカバーを兼ねているので、該取付部２８がステップ２２によって被蔽され、該取付部２８が他物に接触するのを防止できる。 Thus, since the said step 22 is being fixed by the bolt fastening structure, the operation | work of attachment and removal of this step 22 is easy, and replacement | exchange can be easily performed even if step 22 is damaged by any chance. Further, since the step 22 also serves as a cover for the attachment portion 27 of the handrail 23, the attachment portion 28 is covered by the step 22, and the attachment portion 28 can be prevented from contacting other objects.
かくして、本発明は、ステップ２２の交換が容易に行えるとともに、ハンドレール２３の取付部２８を被蔽するので、外観が良好となって商品価値が向上する。 Thus, according to the present invention, step 22 can be easily replaced and the mounting portion 28 of the handrail 23 is covered, so that the appearance is improved and the commercial value is improved.
なお、本発明は、本発明の精神を逸脱しない限り種々の改変を為すことができ、そして、本発明が該改変されたものに及ぶことは当然である。 It should be noted that the present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.
１０ 油圧ショベル
１３ 上部旋回体
２１ 下部フレーム
２２ ステップ
２３ ハンドレール
２４ 踏み面
２５ 切り欠き部
２６ ブラケット
２７ ボルト
２８ 取付部
DESCRIPTION OF SYMBOLS 10 Hydraulic excavator 13 Upper revolving body 21 Lower frame 22 Step 23 Hand rail 24 Tread surface 25 Notch part 26 Bracket 27 Bolt 28 Attachment part
Claims (2)
前記ステップは上部旋回体にボルトにて固定し、かつ、前記ハンドレールの取付部を被蔽するカバーを兼ねていることを特徴とする建設機械のステップ構造。 In a construction machine in which a step for raising and lowering is provided on the upper swing body and a handrail is attached in the vicinity of the step,
A step structure of a construction machine, wherein the step is fixed to the upper swing body with a bolt and serves also as a cover for covering the attachment portion of the handrail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005365380A JP4437471B2 (en) | 2005-12-19 | 2005-12-19 | Construction machine step structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005365380A JP4437471B2 (en) | 2005-12-19 | 2005-12-19 | Construction machine step structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2007169917A true JP2007169917A (en) | 2007-07-05 |
| JP4437471B2 JP4437471B2 (en) | 2010-03-24 |
Family
ID=38296826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2005365380A Expired - Fee Related JP4437471B2 (en) | 2005-12-19 | 2005-12-19 | Construction machine step structure |
Country Status (1)
| Country | Link |
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| JP (1) | JP4437471B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2136005A1 (en) * | 2008-06-16 | 2009-12-23 | Kobelco Construction Machinery Co., Ltd. | Construction machine comprising an upper structure with a handrail |
| JP2010077607A (en) * | 2008-09-24 | 2010-04-08 | Hitachi Constr Mach Co Ltd | Handrail of construction machinery |
| EP2246486A1 (en) * | 2008-02-27 | 2010-11-03 | Caterpillar SARL | Decorative cover structure for construction machine |
| JP2011058267A (en) * | 2009-09-10 | 2011-03-24 | Caterpillar Sarl | Construction machine |
| CN103572793A (en) * | 2012-08-08 | 2014-02-12 | 卡特彼勒Sarl公司 | Engineering machinery cover and engineering machinery |
| EP2743136A1 (en) * | 2011-08-08 | 2014-06-18 | Komatsu Ltd. | Wheel loader |
| CN103993626A (en) * | 2014-06-04 | 2014-08-20 | 柳州柳工挖掘机有限公司 | Handrail device of excavator |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104960582A (en) * | 2015-06-30 | 2015-10-07 | 苏州先锋物流装备科技有限公司 | Low tilting pedal |
-
2005
- 2005-12-19 JP JP2005365380A patent/JP4437471B2/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2246486A1 (en) * | 2008-02-27 | 2010-11-03 | Caterpillar SARL | Decorative cover structure for construction machine |
| EP2246486A4 (en) * | 2008-02-27 | 2011-05-25 | Caterpillar Sarl | Decorative cover structure for construction machine |
| EP2136005A1 (en) * | 2008-06-16 | 2009-12-23 | Kobelco Construction Machinery Co., Ltd. | Construction machine comprising an upper structure with a handrail |
| US7854471B2 (en) | 2008-06-16 | 2010-12-21 | Kobelco Construction Machinery Co., Ltd. | Construction machine |
| JP2010077607A (en) * | 2008-09-24 | 2010-04-08 | Hitachi Constr Mach Co Ltd | Handrail of construction machinery |
| JP2011058267A (en) * | 2009-09-10 | 2011-03-24 | Caterpillar Sarl | Construction machine |
| EP2743136A1 (en) * | 2011-08-08 | 2014-06-18 | Komatsu Ltd. | Wheel loader |
| EP2743136A4 (en) * | 2011-08-08 | 2014-07-02 | Komatsu Mfg Co Ltd | Wheel loader |
| US8919474B2 (en) | 2011-08-08 | 2014-12-30 | Komatsu Ltd. | Wheel loader |
| CN103572793A (en) * | 2012-08-08 | 2014-02-12 | 卡特彼勒Sarl公司 | Engineering machinery cover and engineering machinery |
| CN103993626A (en) * | 2014-06-04 | 2014-08-20 | 柳州柳工挖掘机有限公司 | Handrail device of excavator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4437471B2 (en) | 2010-03-24 |
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