JP2009137370A - Cabin of construction machine - Google Patents

Cabin of construction machine Download PDF

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JP2009137370A
JP2009137370A JP2007314365A JP2007314365A JP2009137370A JP 2009137370 A JP2009137370 A JP 2009137370A JP 2007314365 A JP2007314365 A JP 2007314365A JP 2007314365 A JP2007314365 A JP 2007314365A JP 2009137370 A JP2009137370 A JP 2009137370A
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hollow square
cabin
construction machine
square pipe
pillar
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JP5038871B2 (en
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Hideo Kosaka
英雄 小坂
Yusuke Harayama
雄介 原山
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Press Kogyo Co Ltd
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Press Kogyo Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a cabin of a construction machine capable of preventing any local buckling of a rear pillar when the construction machine is rolled over, and enhancing the design property of a panel. <P>SOLUTION: A rear pillar 12 constituting a skeleton of a cabin is formed of a pair of hollow square pipes 25f, 25r which are juxtaposed so that their front and rear parts are brought into contact with each other, and the rear hollow square pipe 25r is offset inwardly in the width direction with respect to the front hollow pipe 25f. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、建設機械用キャビンに係り、特に、転倒時にキャビンを保護できる建設機械用キャビンに関するものである。   The present invention relates to a construction machine cabin, and more particularly to a construction machine cabin capable of protecting a cabin during a fall.

従来、油圧ショベルなどの建設機械用キャビンの骨組み構造は、図４に示すように、旋回台４０上に、左右のフロントピラー４１と左右のリアピラー４２の上部をルーフサイド４３で連結し、左右のフロントピラー４１、４１をフロントクロスメンバ４４で、リアピラー４２、４２をリアクロスメンバ４５で連結して構成される。   Conventionally, the framework structure of a construction machine cabin such as a hydraulic excavator, as shown in FIG. The front pillars 41 and 41 are connected by a front cross member 44, and the rear pillars 42 and 42 are connected by a rear cross member 45.

この骨組み構造を基に、左右のルーフサイド４３間にルーフパネル４６が取り付けられ、左側のピラー４１、４２間の乗降口にスライドドア（図示せず）が設けられ、また周囲に適宜ウインドウパネル（図示せず）が取り付けられて建設機械用キャビン５０とされる。   Based on this framework structure, a roof panel 46 is attached between the left and right roof sides 43, a sliding door (not shown) is provided at the entrance between the left pillars 41, 42, and an appropriate window panel ( (Not shown) is attached to form a construction machine cabin 50.

また、キャビン５０の右側の旋回台４０上には、支持プレート４７を介して作業機械のアーム４８が伏仰自在に設けられ、そのアーム４８を伏仰する油圧シリンダ４９が旋回台４０に取り付けられる。   Further, an arm 48 of a work machine is provided on a swivel base 40 on the right side of the cabin 50 via a support plate 47 so that the arm 48 can be raised and lowered, and a hydraulic cylinder 49 that faces the arm 48 is attached to the swivel base 40. .

この建設機械用キャビンにおいては、転倒時に、リアピラー４２とアーム４８を支持する支持プレート４７とが干渉し、図示の丸Ｒで囲んだ位置のリアピラー４２が局部座屈する問題がある。   In this construction machine cabin, the rear pillar 42 and the support plate 47 that supports the arm 48 interfere with each other at the time of falling, and there is a problem that the rear pillar 42 at a position surrounded by a circle R shown in the figure is locally buckled.

そこで、骨組みのＲＯＰＳ（Ｒｏｌｌ−Ｏｖｅｒ Ｐｒｏｔｅｃｔｉｖｅ Ｓｔｒｕｃｔｕｒｅ）の強度を高めるために、特に、上述したようにリアピラーを補強するために、リアピラーを角パイプにして補強することが、特許文献１で提案されている。   Therefore, in order to increase the strength of the ROPS (Roll-Over Protective Structure) of the framework, in particular, in order to reinforce the rear pillar as described above, it is proposed in Patent Document 1 to reinforce the rear pillar as a square pipe. Yes.

この特許文献１の補強構造は、図５に示すように、断面長方形状の角パイプでリヤピラー５２を構成し、その角パイプからなるリヤピラー５２の後面にハット状のチャネル材５３を設け、そのチャネル材５３でリヤパネル５４を保持し、リヤピラー５２の側面でサイドパネル５５を保持するようにしている。   As shown in FIG. 5, the reinforcing structure of Patent Document 1 is configured such that a square pillar having a rectangular cross section constitutes a rear pillar 52, and a hat-like channel member 53 is provided on the rear surface of the rear pillar 52 composed of the square pipe. The rear panel 54 is held by the material 53, and the side panel 55 is held by the side surface of the rear pillar 52.

特開２００６−３２１３７３号公報JP 2006-321373 A

しかしながら、角パイプでリヤピラーを構成しても、上述した局部座屈を防止できる十分な強度を得るためには、板厚をアップする必要があり、コストアップとなる。   However, even if the rear pillar is constituted by a square pipe, in order to obtain a sufficient strength capable of preventing the above-mentioned local buckling, it is necessary to increase the plate thickness, resulting in an increase in cost.

またリヤパネル５４やサイドパネル５５は、リヤピラー５２が断面四角形状の角パイプであるため、パネルのデザインに自由度がなく商品性がない問題がある。   Further, since the rear pillars 52 and the side panels 55 are square pipes having a square cross section, there is a problem in that the design of the panels is not flexible and there is no merchantability.

そこで、本発明の目的は、上記課題を解決し、転倒時のリアピラーの局部座屈を防止できると共にパネルのデザイン性を向上できる建設機械用キャビンを提供することにある。   Accordingly, an object of the present invention is to provide a construction machine cabin capable of solving the above-described problems and preventing local buckling of the rear pillar during a fall and improving the design of the panel.

上記目的を達成するために請求項１の発明は、キャビンの骨組みを構成するリアピラーを、一対の中空角パイプで形成すると共にその前後が接するように並べて設けたことを特徴とする建設機械用キャビンである。   In order to achieve the above object, the invention according to claim 1 is characterized in that a rear pillar constituting a cabin framework is formed by a pair of hollow square pipes and arranged side by side so that the front and rear thereof are in contact with each other. It is.

請求項２の発明は、後方の中空角パイプを前方の中空角パイプに対して幅方向で内側にオフセットさせた請求項１記載の建設機械用キャビンである。   The invention according to claim 2 is the cabin for construction machine according to claim 1, wherein the rear hollow square pipe is offset inward in the width direction with respect to the front hollow square pipe.

請求項３の発明は、右側のリアピラーの後方の中空角パイプの右側面に補強用プレートを設けた請求項２記載の建設機械用キャビンである。   A third aspect of the invention is the construction machine cabin according to the second aspect, wherein a reinforcing plate is provided on the right side surface of the hollow square pipe behind the right rear pillar.

請求項４の発明は、前後の中空角パイプのサイズを変え、これを前後が接するように並べて設けてリアピラーを構成した請求項１記載の建設機械用キャビンである。   The invention according to claim 4 is the construction machine cabin according to claim 1, wherein the rear pillar is configured by changing the size of the front and rear hollow square pipes and arranging them in such a manner that the front and rear are in contact with each other.

請求項５の発明は、前方の中空角パイプに対して後方の中空角パイプのサイズを小さく形成し、その前後の中空角パイプの内側の面が合うように並べた請求項４記載の建設機械用キャビンである。   The invention according to claim 5 is the construction machine according to claim 4, wherein the size of the rear hollow square pipe is made smaller than that of the front hollow square pipe and the inner surfaces of the front and rear hollow square pipes are aligned. For cabin.

請求項６の発明は、右側のリアピラーの後方の中空角パイプの右側面に補強用プレートを設けた請求項５記載の建設機械用キャビンである。   A sixth aspect of the present invention is the construction machine cabin according to the fifth aspect, wherein a reinforcing plate is provided on the right side surface of the hollow square pipe behind the right rear pillar.

本発明によれば、リアピラーを一対の中空角パイプを前後に並べて形成することで、リアピラーの強度を向上させることができ、また幅方向で後方の中空角パイプをオフセットさせることで、パネルのデザインに影響がなく局部座屈の補強プレートを組み付けるスペースが確保でき、さらに従来のストレートのリアピラーに対してデザイン的な商品性を向上できるという優れた効果を発揮するものである。   According to the present invention, the rear pillar can be formed by arranging a pair of hollow square pipes at the front and back, thereby improving the strength of the rear pillar, and by offsetting the rear hollow square pipe in the width direction, the design of the panel As a result, it is possible to secure a space for assembling a locally buckled reinforcing plate and to improve the design merchantability of a conventional straight rear pillar.

以下、本発明の好適な一実施の形態を添付図面に基づいて詳述する。   A preferred embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

図１は、本発明の建設機械用キャビンの全体斜視図を示し、図１（ａ）は、骨組み構造を、図１（ｂ）は、サイドパネルとルーフパネルを取り付けた状態の斜視図を示したものである。   FIG. 1 shows an overall perspective view of a construction machine cabin according to the present invention, FIG. 1 (a) shows a frame structure, and FIG. 1 (b) shows a perspective view with a side panel and a roof panel attached. It is a thing.

先ず、骨組み構造１０は、従来例と基本的には同じで、左右のフロントピラー１１と左右のリアピラー１２の上部をルーフサイド１３で連結し、フロントピラー１１間をフロントクロスメンバ１４で連結し、リアピラー１２、１２間をリアクロスメンバ１５と中間クロスメンバ１６で連結して構成される。   First, the frame structure 10 is basically the same as the conventional example, the upper parts of the left and right front pillars 11 and the upper parts of the left and right rear pillars 12 are connected by the roof side 13, and the front pillars 11 are connected by the front cross member 14. The rear pillars 12 and 12 are connected by a rear cross member 15 and an intermediate cross member 16.

左右のフロントピラー１１とリアピラー１２は、ベースフレーム１７に立設して設けられる。   The left and right front pillars 11 and the rear pillar 12 are provided upright on the base frame 17.

ルーフサイド１３、１３間には、ルーフ１８とルーフウインドウ１９を保持するルーフ補強材２０が設けられ、左側のルーフサイド１３には、フロントピラー１１側に運転員の乗降口を区画するセンターピラー２１が設けられる。   A roof reinforcing member 20 that holds the roof 18 and the roof window 19 is provided between the roof sides 13 and 13, and a center pillar 21 that partitions a driver's entrance on the front pillar 11 side on the left roof side 13. Is provided.

フロントピラー１１とルーフサイド１３とは継手２２にて連結される。   The front pillar 11 and the roof side 13 are connected by a joint 22.

フロントピラー１１とルーフサイド１３の内側には、フロントウインドウ（図示せず）をスライドするためのガイド溝２３が形成され、フロントウインドウが、フロントピラー１１の位置から、ルーフサイド１３の位置までスライドできるようになっている。   Guide grooves 23 for sliding a front window (not shown) are formed inside the front pillar 11 and the roof side 13 so that the front window can slide from the position of the front pillar 11 to the position of the roof side 13. It is like that.

なお、２４は、作業機械のアームを支持する支持プレートである。   Reference numeral 24 denotes a support plate that supports the arm of the work machine.

さて本発明においては、図２に示すように、リアピラー１２を、一対の中空角パイプ２５ｆ、２５ｒで形成すると共にその前後の中空角パイプ２５ｆ、２５ｒが接するように並べて設けたものである。   In the present invention, as shown in FIG. 2, the rear pillar 12 is formed by a pair of hollow square pipes 25f and 25r, and arranged side by side so that the front and rear hollow square pipes 25f and 25r are in contact with each other.

この中空角パイプ２５ｆ、２５ｒは、同じサイズの断面正方形の角パイプからなり、これを後方の中空角パイプ２５ｒ、２５ｒが幅方向で寸法ｈずつ内側にオフセットさせて設ける。また右側の後方の中空角パイプ２５ｒの右側面（外側）には補強用プレート２６を設ける。   The hollow square pipes 25f and 25r are square pipes having a square cross section of the same size, and the hollow square pipes 25r and 25r at the rear are offset inward by a dimension h in the width direction. Further, a reinforcing plate 26 is provided on the right side surface (outside) of the right rear hollow square pipe 25r.

このように、後方の中空角パイプ２５ｒをオフセットさせて設けることで、局部座屈防止用の補強用プレート２６を取り付けるスペースが確保できると共に、前後の中空角パイプ２５ｆ、２５ｒがオフセットされているため、リヤパネル２７とサイドパネル２８の取り付けスペースに余裕ができ、デザイン的な商品性を向上させることができる。   Thus, by providing the rear hollow square pipe 25r offset, a space for attaching the reinforcing plate 26 for preventing local buckling can be secured, and the front and rear hollow square pipes 25f, 25r are offset. The space for attaching the rear panel 27 and the side panel 28 can be afforded, and the design merchandise can be improved.

すなわち、後方の中空角パイプ２５ｒを内側にオフセットさせることで、サイドパネル２８は図示の実線から２点鎖線２８ａで示す範囲で自由に曲面的デザインを変更することができ、デザイン性を向上させることができる。   That is, by offsetting the rear hollow square pipe 25r to the inside, the side panel 28 can freely change the curved design within the range indicated by the two-dot chain line 28a from the solid line in the drawing, thereby improving the design. Can do.

また中空角パイプ２５ｆ、２５ｒをオフセットさせることで断面モーメントで３％強度を向上させることができる。   Further, by offsetting the hollow square pipes 25f, 25r, the strength can be improved by 3% in terms of the moment of section.

図３は、本発明の他の実施の形態を示したものである。   FIG. 3 shows another embodiment of the present invention.

図２の実施の形態では、前後の中空角パイプ２５ｆ、２５ｒの断面サイズを同じとしてオフセットさせる例を示したが、本実施の形態では、中空角パイプ２９ｆ、２９ｒの断面サイズを変え、前後の中空角パイプ２９ｆ、２９ｒが前後で接するように並べて設けてリアピラー１２を構成したものである。   In the embodiment of FIG. 2, an example in which the cross-sectional sizes of the front and rear hollow square pipes 25 f and 25 r are offset as the same is shown. However, in the present embodiment, the cross-sectional sizes of the hollow square pipes 29 f and 29 r are changed to The rear pillar 12 is configured by arranging the hollow square pipes 29f and 29r so as to be in contact with each other at the front and rear.

この場合、前方の中空角パイプ２９ｆに対して後方の中空角パイプ２９ｒのサイズを小さく形成し、その前後の中空角パイプ２９ｆ、２９ｒの内側の面が合うように並べることで、図２と同様にオフセットした状態と同じにでき、右側のリアピラー１２の後方の中空角パイプ２９ｒの右側面に補強用プレート２６を設けることができる。   In this case, the size of the rear hollow square pipe 29r is made smaller than the front hollow square pipe 29f, and the inner surfaces of the front and rear hollow square pipes 29f and 29r are aligned so that they are the same as in FIG. The reinforcing plate 26 can be provided on the right side surface of the hollow square pipe 29r behind the right rear pillar 12.

本実施の形態においては、中空角パイプ２９ｆ、２９ｒの内側面が合っているため、内側のデザイン性を向上させることができる。   In the present embodiment, since the inner surfaces of the hollow square pipes 29f and 29r are matched, the inner design can be improved.

本発明におけるキャビンの骨組み構造を示す斜視図である。It is a perspective view which shows the frame structure of the cabin in this invention. 図１（ａ）のＡ−Ａ線部の断面図である。It is sectional drawing of the AA line part of Fig.1 (a). 本発明の他の実施の形態を示す断面図である。It is sectional drawing which shows other embodiment of this invention. 従来のキャビンの斜視図である。It is a perspective view of the conventional cabin. 従来のリアピラーの詳細断面図である。It is detail sectional drawing of the conventional rear pillar.

符号の説明Explanation of symbols

１０ キャビン
１１ フロントピラー
１２ リアピラー
２５ｆ、２９ｆ 前方の中空角パイプ
２５ｒ、２９ｒ 後方の中空角パイプ 10 Cabin 11 Front Pillar 12 Rear Pillar 25f, 29f Front Hollow Square Pipe 25r, 29r Rear Hollow Square Pipe

Claims (6)

キャビンの骨組みを構成するリアピラーを、一対の中空角パイプで形成すると共にその前後が接するように並べて設けたことを特徴とする建設機械用キャビン。   A cabin for a construction machine, characterized in that rear pillars constituting a framework of the cabin are formed by a pair of hollow square pipes and are arranged side by side so that the front and rear thereof are in contact with each other. 後方の中空角パイプを前方の中空角パイプに対して幅方向で内側にオフセットさせた請求項１記載の建設機械用キャビン。   The construction machine cabin according to claim 1, wherein the rear hollow square pipe is offset inward in the width direction with respect to the front hollow square pipe. 右側のリアピラーの後方の中空角パイプの右側面に補強用プレートを設けた請求項２記載の建設機械用キャビン。   The cabin for a construction machine according to claim 2, wherein a reinforcing plate is provided on the right side surface of the hollow square pipe behind the right rear pillar. 前後の中空角パイプのサイズを変え、これを前後が接するように並べて設けてリアピラーを構成した請求項１記載の建設機械用キャビン。   The cabin for a construction machine according to claim 1, wherein the rear pillar is configured by changing the size of the front and rear hollow square pipes and arranging them so that the front and rear are in contact with each other. 前方の中空角パイプに対して後方の中空角パイプのサイズを小さく形成し、その前後の中空角パイプの内側の面が合うように並べた請求項４記載の建設機械用キャビン。   The cabin for a construction machine according to claim 4, wherein the size of the rear hollow square pipe is made smaller than that of the front hollow square pipe, and the inner surfaces of the front and rear hollow square pipes are aligned. 右側のリアピラーの後方の中空角パイプの右側面に補強用プレートを設けた請求項５記載の建設機械用キャビン。   The cabin for a construction machine according to claim 5, wherein a reinforcing plate is provided on the right side surface of the hollow square pipe behind the right rear pillar.
JP2007314365A 2007-12-05 2007-12-05 Construction machinery cabin Active JP5038871B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2154295A1 (en) * 2008-08-11 2010-02-17 Kobelco Construction Machinery Co., Ltd. Cabin and traveling construction machine with the same
CN105339245A (en) * 2015-07-01 2016-02-17 株式会社小松制作所 Work vehicle cab and method for manufacturing same
JP2017179805A (en) * 2016-03-29 2017-10-05 住友建機株式会社 Shovel

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002250052A (en) * 2001-02-26 2002-09-06 Komatsu Ltd Driver protecting structure of self-propelled vehicle
JP2004106824A (en) * 2002-08-30 2004-04-08 Komatsu Ltd Cab structure for work vehicle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002250052A (en) * 2001-02-26 2002-09-06 Komatsu Ltd Driver protecting structure of self-propelled vehicle
JP2004106824A (en) * 2002-08-30 2004-04-08 Komatsu Ltd Cab structure for work vehicle

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2154295A1 (en) * 2008-08-11 2010-02-17 Kobelco Construction Machinery Co., Ltd. Cabin and traveling construction machine with the same
US8235457B2 (en) 2008-08-11 2012-08-07 Kobelco Construction Machinery Co., Ltd. Cabin and traveling construction machine with the same
CN105339245A (en) * 2015-07-01 2016-02-17 株式会社小松制作所 Work vehicle cab and method for manufacturing same
US9663920B2 (en) 2015-07-01 2017-05-30 Komatsu Ltd. Cab for work vehicle and a method of manufacturing same
JP2017179805A (en) * 2016-03-29 2017-10-05 住友建機株式会社 Shovel

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