JP2015221973A - Cab of construction machine - Google Patents

Cab of construction machine Download PDF

Info

Publication number
JP2015221973A
JP2015221973A JP2014106361A JP2014106361A JP2015221973A JP 2015221973 A JP2015221973 A JP 2015221973A JP 2014106361 A JP2014106361 A JP 2014106361A JP 2014106361 A JP2014106361 A JP 2014106361A JP 2015221973 A JP2015221973 A JP 2015221973A
Authority
JP
Japan
Prior art keywords
column
strut
cab
window glass
front column
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
JP2014106361A
Other languages
Japanese (ja)
Inventor
哲士 ▲高▼岡
哲士 ▲高▼岡
Tetsushi Takaoka
亮介 苧野
Ryosuke Ono
亮介 苧野
原山 雄介
Yusuke Harayama
雄介 原山
信哉 酒井
Shinya Sakai
信哉 酒井
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.)
Caterpillar SARL
Press Kogyo Co Ltd
Original Assignee
Caterpillar SARL
Press Kogyo 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 Caterpillar SARL, Press Kogyo Co Ltd filed Critical Caterpillar SARL
Priority to JP2014106361A priority Critical patent/JP2015221973A/en
Priority to CN201520282613.9U priority patent/CN204781067U/en
Publication of JP2015221973A publication Critical patent/JP2015221973A/en
Pending legal-status Critical Current

Links

Landscapes

  • Body Structure For Vehicles (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Window Of Vehicle (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a cab of a construction machine that can improve rigidity of the other strut requiring relatively higher rigidity than that of one strut among a pair of front struts without impairing the appearance, and can improve the appearance by reducing a step difference caused between an outer surface of the other strut and an outer surface of a windowpane even when each front strut is formed in a substantially symmetrical shape.SOLUTION: A cab 24 comprises a right front strut 34, a left front strut 36, a right rear strut 38 and a left rear strut 40, and a right side surface windowpane 82 disposed between the right front strut 34 and the right rear strut 38. A side surface rear end 34a of the right front strut 34 is recessed toward the inside of the cab 24, and a leading edge 82a of the right side surface windowpane 82 is housed in the side surface rear end 34a of the right front strut 34. A reinforcing member 84 is interposed between the side surface rear end 34a of the right front strut 34 and the leading edge 82a of the right side surface windowpane 82.

Description

本発明は、右前支柱、左前支柱、右後支柱及び左後支柱と、右前支柱又は左前支柱の少なくとも上部と右後支柱又は左後支柱の少なくとも上部との間に配設される窓ガラスと、閉じられた状態において左前支柱又は右前支柱の側面に当接されるドアとを具備する建設機械のキャブに関する。   The present invention includes a right front support, a left front support, a right rear support and a left rear support, and a window glass disposed between at least an upper part of the right front support or the left front support and at least an upper part of the right rear support or the left rear support, The present invention relates to a cab of a construction machine including a door that is in contact with a left front column or a side surface of a right front column in a closed state.

一般に、建設機械の代表例である油圧ショベルは、自走可能な下部走行体と、下部走行体上に旋回自在に搭載された上部旋回体と、上部旋回体の前方中央部に俯仰動自在に取付けられた作業腕装置とから大略構成されている。   In general, a hydraulic excavator, which is a typical example of a construction machine, is a self-propelled lower traveling body, an upper revolving body that is pivotably mounted on the lower traveling body, and a vertically movable center in front of the upper revolving body. It is generally composed of an attached work arm device.

上部旋回体には、作業腕装置の左側に運転員が搭乗するキャブが配設されている。キャブは、右前支柱、左前支柱、右後支柱及び左後支柱と、右前支柱及び右後支柱の間に配設される窓ガラスと、閉じられた状態において左前支柱の側面に当接されるドアとを具備している。   The upper swing body is provided with a cab on which a driver gets on the left side of the work arm device. The cab includes a right front column, a left front column, a right rear column, a left rear column, a window glass disposed between the right front column and the right rear column, and a door that is in contact with a side surface of the left front column in a closed state. It is equipped with.

右前支柱及び左前支柱は、窓ガラスやドアが当接された際に窓ガラスの外面やドアの外面が各前支柱の外面よりも左右方向外方に突出しないようにするため、その側面後端部がキャブの内方に向かって没入されている。そして、窓ガラスの前縁部は、右前支柱の没入された側面後端部に収容されている。又、ドアの前縁部は、ドアが閉じられた状態において、左前支柱の没入された側面後端部に当接されている。   The right front column and the left front column are designed to prevent the outer surface of the window glass and the outer surface of the door from protruding outward in the left-right direction from the outer surface of each front column when the window glass or the door is brought into contact. The part is immersed towards the inside of the cab. And the front edge part of a window glass is accommodated in the side surface rear end part into which the right front support | pillar was immersed. Further, the front edge portion of the door is in contact with the rear end portion of the side surface into which the left front column is immersed in the state where the door is closed.

キャブは、傾斜地や不整地等において油圧ショベルが転倒した場合に、キャブ内に搭乗した運転員が押しつぶされてしまう危険から守るため、このような場合でもキャブ内の空間を一定程度確保することができる剛性を有することが望まれている。そこで、右前支柱及び左前支柱においては、側面後端部を没入させるようにするとともに剛性の向上等を図るため、鋼管を引き抜き加工した中空の異形鋼管から形成されている。   In order to protect the cab from the risk of being crushed by the operator boarded in the cab when the excavator falls on slopes or rough terrain, even in such a case, a certain amount of space in the cab can be secured. It is desired to have such rigidity. Therefore, the right front strut and the left front strut are formed of hollow deformed steel pipes in which the steel pipes are drawn out in order to immerse the side rear end portions and improve the rigidity.

油圧ショベルが転倒し、キャブの左側面(ドアが配設される面)が地面に接触した場合、キャブは右側(作業腕装置側)に向かって荷重を受けることとなる。この場合における右前支柱及び左前支柱の変形についてみると、左前支柱においては、地面との接触によってその全体に荷重がかかり、且つその下部が上部旋回体に固定されているため、その全体が上方に向かって右側に傾斜して変形することとなる。一方、右前支柱においては、左前支柱と同様にその全体が上方に向かって右側に傾斜して変形した後、その一部分が作業腕装置に接触する。このため、右前支柱における作業腕装置と接触する部分は、応力が集中することにより変形量が大きくなる。従って、右前支柱は左前支柱よりも比較的高い剛性が要求されている。   When the excavator falls and the left side surface (surface on which the door is disposed) of the cab comes into contact with the ground, the cab receives a load toward the right side (working arm device side). Looking at the deformation of the right front strut and the left front strut in this case, the left front strut is loaded on the whole by contact with the ground, and its lower part is fixed to the upper swing body, so the whole is upward. It will be inclined and deformed to the right. On the other hand, in the right front column, like the left front column, after the whole is inclined upward and deformed to the right side, a part thereof contacts the work arm device. For this reason, the amount of deformation at the portion of the right front column that comes into contact with the work arm device increases due to stress concentration. Accordingly, the right front column is required to have relatively higher rigidity than the left front column.

この点に関して、下記特許文献1には、キャブの右前支柱における作業腕装置と接触する部分に補強部材が取付けられていることによって、剛性を向上することができるキャブの保護構造が開示されている。   In this regard, Patent Document 1 below discloses a cab protection structure that can improve rigidity by attaching a reinforcing member to a portion of the cab's right front column that contacts the work arm device. .

特開2011−202452号公報JP 2011-202452 A

しかし、上述したとおりのキャブの保護構造においては、補強部材がキャブの外側に位置する支柱の表面上に取付けられているため、油圧ショベルの外観が損なわれてしまうという問題がある。かかる問題は、キャブが、運転員が搭乗すること等から油圧ショベルにおいて人の目に付きやすい部分であり、且つ油圧ショベル全体の外観に与える影響が大きい部分であることに起因するものである。   However, in the cab protection structure as described above, there is a problem in that the appearance of the hydraulic excavator is impaired because the reinforcing member is attached on the surface of the column located outside the cab. Such a problem is caused by the fact that the cab is a part that is easily noticeable by the operator due to the operator's boarding or the like, and that the cab has a great influence on the appearance of the entire hydraulic excavator.

他方、右前支柱及び左前支柱は、製造コストの抑制等を図るため、略対称形状に形成される場合がある。この場合には、通常、右前支柱の側面後端部に収容される窓ガラスの前縁部の厚さよりも、左前支柱の側面後端部に当接されるドアの前縁部の左右方向の寸法の方が大きいことから、窓ガラスの外面及びドアの外面が各前支柱の外面から突出しないようにするため、各前支柱の側面後端部の没入深さはドアの前縁部の左右方向の寸法に対応したものとされている。そうすると、窓ガラスの前縁部が右前支柱の側面後端部に収容されたときには、窓ガラスの外面が右前支柱の外面よりも内方に位置することとなり、これらの間には段差が生じてしまう。従って、油圧ショベルにおいては、このような段差を軽減し、キャブの外観ひいては油圧ショベル全体の外観を向上させることが望まれている。   On the other hand, the right front strut and the left front strut may be formed in a substantially symmetrical shape in order to reduce the manufacturing cost. In this case, the thickness of the front edge of the window glass accommodated in the rear end of the side surface of the right front column is usually larger than the thickness of the front edge of the door in contact with the side rear end of the left front column. Because the dimensions are larger, the depth of penetration at the rear end of the side of each front strut is set at the front edge of the door so that the outer surface of the window glass and the outer surface of the door do not protrude from the outer surface of each front strut. It corresponds to the dimension in the left-right direction. Then, when the front edge of the window glass is accommodated in the rear end of the side surface of the right front column, the outer surface of the window glass is positioned inward from the outer surface of the right front column, and there is a step between them. End up. Therefore, in the hydraulic excavator, it is desired to reduce such a step and improve the appearance of the cab and thus the overall appearance of the hydraulic excavator.

本発明は上記事実に鑑みてなされたものであり、その主たる技術的課題は、その外観が損なわれることなく一対の前支柱のうち一方の支柱よりも比較的高い剛性が要求される他方の支柱の剛性を向上することができるとともに、各前支柱が略対称形状に形成された場合でも前記他方の支柱の外面と窓ガラスの外面との間に生ずる段差を軽減することによって外観を向上することができる建設機械のキャブを提供することである。   The present invention has been made in view of the above-mentioned facts, and the main technical problem thereof is the other strut that requires relatively higher rigidity than one strut of the pair of front struts without losing its appearance. In addition to improving the rigidity of the front strut, even when each front strut is formed in a substantially symmetrical shape, the appearance is improved by reducing the level difference between the outer surface of the other strut and the outer surface of the window glass. It is to provide a cab for construction machinery that can be used.

本発明によれば、上記技術的課題を達成する建設機械のキャブとして、右前支柱、左前支柱、右後支柱及び左後支柱と、該右前支柱又は該左前支柱の少なくとも上部と該右後支柱又は該左後支柱の少なくとも上部との間に配設される窓ガラスと、閉じられた状態において該左前支柱又は該右前支柱の側面に当接されるドアとを具備し、該右前支柱及び該左前支柱は略対称形状であり且つその側面後端部が内方に没入されており、該窓ガラスの前縁部は該右前支柱又は該左前支柱の没入された該側面後端部に収容され、該ドアが閉じられた状態において該ドアの前縁部は該左前支柱又は該右前支柱の没入された該側面後端部に当接される建設機械のキャブにして、該右前支柱又は該左前支柱の没入された該側面後端部と該窓ガラスの該前縁部との間には補強部材が介在されている、ことを特徴とする建設機械のキャブが提供される。   According to the present invention, as a cab of a construction machine that achieves the above technical problem, a right front strut, a left front strut, a right rear strut and a left rear strut, and at least an upper portion of the right front strut or the left front strut and the right rear strut or A window glass disposed between at least the upper part of the left rear column and a door that is in contact with the left front column or a side surface of the right front column in the closed state; The support column has a substantially symmetrical shape and the side rear end thereof is immersed inward, and the front edge portion of the window glass is accommodated in the side rear end portion of the right front support column or the left front support column, When the door is closed, the front edge of the door is a cab of a construction machine that abuts the rear left end of the left front column or the right front column, and the right front column or the left front column The rear end of the side surface and the front edge of the window glass A reinforcing member is interposed between the construction machine cab is provided, characterized in that.

好ましくは、該補強部材は、該右前支柱又は該左前支柱の没入された該側面後端部に溶接によって接合され、且つ該窓ガラスの前縁部とは接着材料を介して接着されており、該右前支柱又は該左前支柱の該側面後端部の没入深さをD、該補強部材の厚さをT1、該接着材料の接着層の厚さをT2、該窓ガラスの厚さをT3とすると、D≧T1+T2+T3である。該右前支柱又は該左前支柱の下部と該右後支柱又は該左後支柱の下部との間には側面板が配設されており、該窓ガラスは該側面板に続いてその上方に配設されており、該補強部材は該窓ガラスの下端縁に整合した下端から上方に延在しているのが好適である。   Preferably, the reinforcing member is bonded to the rear end of the side surface of the right front column or the left front column by welding, and is bonded to the front edge of the window glass with an adhesive material. The immersion depth of the rear end of the side surface of the right front column or the left front column is D, the thickness of the reinforcing member is T1, the thickness of the adhesive layer of the adhesive material is T2, and the thickness of the window glass is T3. Then, D ≧ T1 + T2 + T3. A side plate is disposed between the lower portion of the right front column or the left front column and the lower portion of the right rear column or the left rear column, and the window glass is disposed above the side plate after the side plate. The reinforcing member preferably extends upward from the lower end aligned with the lower edge of the window glass.

本発明によって提供される建設機械のキャブにおいては、右前支柱又は左前支柱の没入された側面後端部と窓ガラスの前縁部との間には補強部材が介在されているため、その外観が損なわれることなく一対の前支柱のうち一方の支柱よりも比較的高い剛性が要求される他方の支柱の剛性を向上することができる。又、本発明のキャブは、各前支柱が略対称形状に形成された場合でも、前記他方の支柱の外面と窓ガラスの外面との間に生ずる段差を軽減することができるので外観を向上することができる。   In the cab of the construction machine provided by the present invention, since the reinforcing member is interposed between the rear side end portion of the right front column or the left front column which is immersed and the front edge portion of the window glass, its appearance is The rigidity of the other strut, which is required to be relatively higher than one strut of the pair of front struts, can be improved without being damaged. Further, the cab of the present invention improves the appearance because the step formed between the outer surface of the other column and the outer surface of the window glass can be reduced even when each front column is formed in a substantially symmetrical shape. be able to.

本発明に従って構成されたキャブを備えた油圧ショベルの側面図。1 is a side view of a hydraulic excavator provided with a cab configured according to the present invention. 図1に示すキャブのフレーム構造体を示す斜視図。The perspective view which shows the frame structure of the cab shown in FIG. 図2中のA−A方向からみた断面図。Sectional drawing seen from the AA direction in FIG. 図2中のB−B方向からみた断面図。Sectional drawing seen from the BB direction in FIG. 図1に示すキャブの後方からみた斜視図。The perspective view seen from the back of the cab shown in FIG. 図5中のC−C方向からみた断面図。Sectional drawing seen from CC direction in FIG. 図1に示すキャブの前方からみた斜視図。The perspective view seen from the front of the cab shown in FIG. 図7中のD−D方向からみた断面図。Sectional drawing seen from the DD direction in FIG.

以下、本発明に係る建設機械のキャブの実施形態を、代表的な建設機械である油圧ショベルを例に挙げ、添付図面を参照しつつ詳細に説明する。   DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a cab for a construction machine according to the present invention will be described in detail with reference to the accompanying drawings, taking a hydraulic excavator as a typical construction machine as an example.

図1を参照して説明する。全体を番号2で示す油圧ショベルは、自走可能な下部走行体4と、下部走行体4上に旋回自在に搭載された上部旋回体6と、上部旋回体6に俯仰動自在に取付けられた作業腕装置8とから大略構成されている。土砂等の掘削作業時には、作業腕装置8が俯仰動作され、上部旋回体6が下部走行体4に対し旋回動作されることによって土砂等の掘削作業が行われるようになっている。   A description will be given with reference to FIG. The hydraulic excavator indicated as a whole by number 2 is attached to a self-propelled lower traveling body 4, an upper revolving body 6 that is pivotably mounted on the lower traveling body 4, and an upper revolving body 6 that can be raised and lowered. The work arm device 8 is generally configured. At the time of excavation work such as earth and sand, the work arm device 8 is moved up and down, and the upper turning body 6 is turned relative to the lower traveling body 4 so that the excavation work such as earth and sand is performed.

作業腕装置8は、上部旋回体6の前方であって左右方向における中央部に俯仰動自在に取付けられたブーム10と、ブーム10の先端側に揺動自在に取付けられたアーム12と、アーム12の先端側に回動自在に取付けられた作業具14と、ブーム10を俯仰動させるブームシリンダ16と、アーム12を揺動させるアームシリンダ18と、作業具14を回動させる作業具シリンダ20とから大略構成されている。   The work arm device 8 includes a boom 10 that is attached to a central portion in the left-right direction in front of the upper swing body 6, an arm 12 that is swingably attached to the distal end side of the boom 10, and an arm 12, a work tool 14 that is rotatably attached to the distal end side, a boom cylinder 16 that moves the boom 10 up and down, an arm cylinder 18 that swings the arm 12, and a work tool cylinder 20 that turns the work tool 14. It is roughly composed of

上部旋回体6は、その骨組み構造体をなす旋回フレーム22を有している。旋回フレーム22上には、ブーム10の左側に配設され運転員が搭乗するキャブ24と、キャブ24の後方に配設されエンジンや油圧ポンプ等の各種機器が収容されている機器収容室26と、機器収容室26の後方に配設され作業腕装置8に対して重量バランスをとるカウンタウエイト28等が搭載されている。   The upper revolving structure 6 has a revolving frame 22 that forms the framework structure. On the revolving frame 22, a cab 24 that is disposed on the left side of the boom 10 and on which an operator gets on, and a device storage chamber 26 that is disposed behind the cab 24 and stores various devices such as an engine and a hydraulic pump. A counterweight 28 and the like disposed on the rear side of the device housing chamber 26 and for balancing the weight with respect to the work arm device 8 are mounted.

キャブ24内には、運転員が着座するための運転席と、油圧ショベル2を操作するための操作レバーと、運転員に必要な機械情報を表示する表示器等が配設されている。尚、本明細書の説明で用いられている前後方向及び左右方向は、図1中のキャブ24内に搭乗した運転員から見た前後方向及び左右方向である。   In the cab 24, a driver's seat for an operator to sit, an operation lever for operating the excavator 2, a display for displaying machine information necessary for the operator, and the like are disposed. Note that the front-rear direction and the left-right direction used in the description of the present specification are the front-rear direction and the left-right direction as viewed from the operator who has boarded the cab 24 in FIG.

キャブ24は、図2に示すように、鋼板から形成された長方形状の床板30と、床板30の外周縁に立設された複数の支柱と、これらの支柱の上部を連結する複数の上枠と、これらの支柱の下部を連結する複数の下枠とからなるフレーム構造体32をなしている。   As shown in FIG. 2, the cab 24 includes a rectangular floor plate 30 formed from a steel plate, a plurality of support columns erected on the outer periphery of the floor plate 30, and a plurality of upper frames that connect the upper portions of these support columns. And a frame structure 32 comprising a plurality of lower frames connecting the lower portions of these columns.

フレーム構造体32の支柱は、床板30の右前側に位置する右前支柱34と、床板30の左前側に位置する左前支柱36と、床板30の右後側に位置する右後支柱38と、床板30の左後側に位置する左後支柱40と、左前支柱36及び左後支柱40の間に位置する左中支柱42とから構成されている。   The pillars of the frame structure 32 are a right front pillar 34 located on the right front side of the floor board 30, a left front pillar 36 located on the left front side of the floor board 30, a right rear pillar 38 located on the right rear side of the floor board 30, and a floor board. 30 is composed of a left rear support column 40 located on the left rear side of 30 and a left middle support column 42 positioned between the left front support column 36 and the left rear support column 40.

右前支柱34及び左前支柱36は、中空の異形鋼管から略対称形状に形成されている。右前支柱34及び左前支柱36は、図3及び図4に示すように、キャブ24の外側に位置する各側面後端部34a,36aがキャブ24の内方に向かって没入されている。各側面後端部34a,36aの左右方向における没入深さは寸法Dである。一方、右後支柱38、左後支柱40及び左中支柱42は中空の角形鋼管から形成されている。又、各支柱は、ボルトによって旋回フレーム22に取付けられている。   The right front strut 34 and the left front strut 36 are formed in a substantially symmetrical shape from a hollow deformed steel pipe. As shown in FIGS. 3 and 4, the right front support column 34 and the left front support column 36 have respective side rear end portions 34 a and 36 a located outside the cab 24 so as to be immersed inward of the cab 24. The immersion depth in the left-right direction of each side rear end 34a, 36a is dimension D. On the other hand, the right rear strut 38, the left rear strut 40, and the left middle strut 42 are formed of hollow rectangular steel pipes. Moreover, each support | pillar is attached to the turning frame 22 with the volt | bolt.

フレーム構造体32の上枠は、右前支柱34の上部及び左前支柱36の上部を連結する前上枠44と、右後支柱38の上部及び左後支柱40の上部を連結する後上枠46と、右前支柱34の上部及び右後支柱38の上部を連結する右上枠48と、左前支柱36の上部、左後支柱40の上部及び左中支柱42の上部を連結する左上枠50とから構成されている。   The upper frame of the frame structure 32 includes a front upper frame 44 that connects the upper part of the right front column 34 and the upper part of the left front column 36, and a rear upper frame 46 that connects the upper part of the right rear column 38 and the upper part of the left rear column 40. The upper right frame 48 that connects the upper part of the right front column 34 and the upper part of the right rear column 38, and the upper left frame 50 that connects the upper part of the left front column 36, the upper part of the left rear column 40, and the upper part of the left middle column 42. ing.

各上枠44,46,48,50は、鋼材から形成されている。そして、前上枠44は、右前支柱34の上端34b、左前支柱36の上端36b、右上枠48の前端48a及び左上枠50の前端50aと溶接によって接合されている。後上枠46は、右後支柱38の上端及び左後支柱40の上端と溶接によって接合されている。又、右上枠48の後端は、右後支柱38の上端と溶接によって接合されている。左上枠50の後端は、左後支柱40の上端と溶接によって接合されている。   Each upper frame 44, 46, 48, 50 is formed from a steel material. The front upper frame 44 is joined to the upper end 34b of the right front column 34, the upper end 36b of the left front column 36, the front end 48a of the upper right frame 48, and the front end 50a of the upper left frame 50 by welding. The rear upper frame 46 is joined to the upper end of the right rear column 38 and the upper end of the left rear column 40 by welding. The rear end of the upper right frame 48 is joined to the upper end of the right rear support 38 by welding. The rear end of the upper left frame 50 is joined to the upper end of the left rear column 40 by welding.

フレーム構造体32の下枠は、右前支柱34の下部及び左前支柱36の下部を連結する前下枠52と、右後支柱38の下部及び左後支柱40の下部を連結する後下枠54と、右前支柱34の下部及び右後支柱38の下部を連結する右下枠56と、左前支柱36の下部、左後支柱40の下部及び左中支柱42の下部を連結する左下枠58とから構成されている。各下枠52,54,56,58は、鋼材から形成されており、各支柱と溶接によって接合され、且つボルトによって床板30と共に旋回フレーム22に取付けられている。尚、フレーム構造体32は、上記の各支柱34,36,38,40,42、各上枠44,46,48,50及び各下枠52,54,56,58のほか、任意の方向及び箇所に他の支柱や枠材又は板材等が設けられていてもよい。   The lower frame of the frame structure 32 includes a front lower frame 52 that connects the lower part of the right front column 34 and the lower part of the left front column 36, and a rear lower frame 54 that connects the lower part of the right rear column 38 and the lower part of the left rear column 40. The lower right frame 56 that connects the lower part of the right front column 34 and the lower part of the right rear column 38, and the lower left frame 58 that connects the lower part of the left front column 36, the lower part of the left rear column 40, and the lower part of the left middle column 42. Has been. Each of the lower frames 52, 54, 56, 58 is made of a steel material, joined to each support column by welding, and attached to the revolving frame 22 together with the floor plate 30 by bolts. Note that the frame structure 32 includes the above-mentioned support columns 34, 36, 38, 40, 42, the upper frames 44, 46, 48, 50 and the lower frames 52, 54, 56, 58, as well as an arbitrary direction and Other struts, frame members, plate members, or the like may be provided at the locations.

図5を参照して説明する。キャブ24の上面は、屋根材60によって覆われている。屋根材60は、その前側に運転員の前部上方の視界を確保するため透光性板材で形成された天窓60aと、薄肉の鋼板からプレス加工等によって形成された屋根板60bとを備えている。天窓60aは、屋根板60bに左右一対のヒンジ62,62を介して開閉自在に支持されており、上方に向けて開放できるようになっている。屋根板60bは、後上枠46,右上枠48及び左上枠50と溶接によって接合されている。   This will be described with reference to FIG. The upper surface of the cab 24 is covered with a roof material 60. The roof material 60 is provided with a skylight 60a formed of a translucent plate material and a roof plate 60b formed of a thin steel plate by pressing or the like in order to ensure a view above the front of the operator. Yes. The skylight 60a is supported on the roof plate 60b through a pair of left and right hinges 62, 62 so as to be freely opened and closed, and can be opened upward. The roof plate 60b is joined to the rear upper frame 46, the upper right frame 48, and the upper left frame 50 by welding.

キャブ24の左側面には、ドア64と左側面板66と左側面窓ガラス68が配設されている。ドア64は、左前支柱36と左中支柱42との間に配設されており、左中支柱42に上下一対のヒンジ70,70を介して開閉自在に支持され、キャブ24の外方に向けて開放できるようになっている。運転員は、ドア64を開閉することによりキャブ24内へと乗降可能となっている。ドア64には、薄肉の鋼板からプレス加工等によって形成された枠材72に、上部窓ガラス74a及び下部窓ガラス74bが取付けられている。又、枠材72の前縁部72aは、図6に示すように、折り返し状に折曲加工されている。この前縁部72aには、キャブ24内への雨水の侵入を防止するため、弾性を有する樹脂材料から形成されたインナー73が配設されている。そして、前縁部72aは、ドア64が閉じられた状態において、左前支柱36の没入された側面後端部36aに当接されている。ここで、前縁部72a及びインナー73の左右方向の寸法dと、左前支柱36の側面後端部36aの没入深さDとの関係については、D≧dである。   On the left side surface of the cab 24, a door 64, a left side plate 66, and a left side window glass 68 are disposed. The door 64 is disposed between the left front column 36 and the left middle column 42, and is supported on the left middle column 42 through a pair of upper and lower hinges 70, 70 so as to be openable and closable. Can be opened. The operator can get in and out of the cab 24 by opening and closing the door 64. In the door 64, an upper window glass 74a and a lower window glass 74b are attached to a frame member 72 formed from a thin steel plate by pressing or the like. Further, the front edge portion 72a of the frame member 72 is bent into a folded shape as shown in FIG. An inner 73 made of an elastic resin material is disposed on the front edge 72a to prevent rainwater from entering the cab 24. The front edge 72a is in contact with the side rear end 36a into which the left front support column 36 is immersed in the state where the door 64 is closed. Here, the relationship between the dimension d in the left-right direction of the front edge portion 72a and the inner 73 and the immersion depth D of the side rear end portion 36a of the left front column 36 is D ≧ d.

左側面板66は、薄肉の鋼板からプレス加工等によって形成されており、左後支柱40の下部、左中支柱42の下部及び左下枠58に溶接によって接合されている。左側面窓ガラス68は、左側面板66の上端縁に続いてその上方に配設されており、左上枠50、左側面板66、左後支柱40及び左中支柱42に接着材料を介して接着されている。   The left side plate 66 is formed from a thin steel plate by pressing or the like, and is joined to the lower portion of the left rear column 40, the lower portion of the left middle column 42, and the lower left frame 58 by welding. The left side window glass 68 is disposed above the upper edge of the left side plate 66, and is adhered to the upper left frame 50, the left side plate 66, the left rear column 40, and the left middle column 42 via an adhesive material. ing.

キャブ24の背面には、背面板76が配設されている。背面板76は、薄肉の鋼板からプレス加工等によって形成されており、右後支柱38、左後支柱40、後上枠46及び後下枠54に溶接によって接合されている。背面板76の上部には、左右方向に延びた略長方形状の開口が形成されており、この開口の周縁に沿って背面窓ガラス76aが接着材料を介して接着されている。   A back plate 76 is disposed on the back surface of the cab 24. The back plate 76 is formed from a thin steel plate by pressing or the like, and is joined to the right rear column 38, the left rear column 40, the rear upper frame 46, and the rear lower frame 54 by welding. A substantially rectangular opening extending in the left-right direction is formed in the upper part of the back plate 76, and a back window glass 76a is bonded to the periphery of the opening via an adhesive material.

図7を参照して説明する。キャブ24の前面には、上部前面窓ガラス78aと下部前面窓ガラス78bが配設されている。上部前面窓ガラス78aは、右前支柱34の内側面から右上枠48の内側面へと続いて配設されたレール(図示されていない)と、左前支柱36の内側面から左上枠50の内側面へと続いて配設されたレール(図示されていない)との間に取付けられており、右前支柱34及び左前支柱36の間から屋根材60の下部へとスライド自在となっている。下部前面窓ガラス78bは、右前支柱34、左前支柱36及び前下枠52に接着材料を介して接着されている。   This will be described with reference to FIG. On the front surface of the cab 24, an upper front window glass 78a and a lower front window glass 78b are disposed. The upper front window glass 78a includes a rail (not shown) arranged continuously from the inner surface of the right front column 34 to the inner surface of the upper right frame 48, and the inner surface of the upper left frame 50 from the inner surface of the left front column 36. It is attached to a rail (not shown) arranged next to the top and is slidable between the right front column 34 and the left front column 36 to the lower part of the roof material 60. The lower front window glass 78b is bonded to the right front column 34, the left front column 36, and the front lower frame 52 through an adhesive material.

キャブ24の右側面には、右側面板80と右側面窓ガラス82とが配設されている。右側面板80は、薄肉の鋼板からプレス加工等によって形成されており、右前支柱34の下部、右後支柱38の下部及び右下枠56に溶接によって接合されている。右側面窓ガラス82は、右側面板80の上端縁に続いてその上方に配設されており、右上枠48、右側面板80、右前支柱34及び右後支柱38に接着材料を介して接着されている。ここで、右側面窓ガラス82の前縁部82aは、右前支柱34の没入された側面後端部34aに収容されており、図8に示すように、右前支柱34の側面後端部34aと右側面窓ガラス82の前縁部82aとの間には補強部材84が介在されている。   A right side plate 80 and a right side window glass 82 are disposed on the right side surface of the cab 24. The right side plate 80 is formed by pressing or the like from a thin steel plate, and is joined to the lower portion of the right front column 34, the lower portion of the right rear column 38, and the right lower frame 56 by welding. The right side window glass 82 is disposed above the upper edge of the right side panel 80 and is bonded to the upper right frame 48, the right side panel 80, the right front column 34, and the right rear column 38 via an adhesive material. Yes. Here, the front edge portion 82a of the right side window glass 82 is accommodated in the side rear end portion 34a into which the right front support column 34 is immersed, and as shown in FIG. A reinforcing member 84 is interposed between the front edge 82 a of the right side window glass 82.

補強部材84は、厚さ寸法がT1の矩形状鋼板から形成されており、右側面窓ガラス82の下端縁に整合した下端から右前支柱34の上端34bまで延在している。又、補強部材84は、右前支柱34の側面後端部34aに溶接によって接合されており、右側面窓ガラス82の前縁部82aとは接着材料を介して接着されている。ここで、右前支柱34の側面後端部34aの没入深さDと、補強部材84の厚さT1、接着材料の接着層Lの厚さT2及び左側面窓ガラス68の厚さT3との関係については、D≧T1+T2+T3であり、特にD=T1+T2+T3であるのが好ましい。   The reinforcing member 84 is formed from a rectangular steel plate having a thickness dimension of T1, and extends from the lower end aligned with the lower end edge of the right side window glass 82 to the upper end 34b of the right front column 34. Further, the reinforcing member 84 is joined to the side rear end portion 34a of the right front column 34 by welding, and is bonded to the front edge portion 82a of the right side window glass 82 through an adhesive material. Here, the immersion depth D of the side rear end 34a of the right front column 34, the thickness T1 of the reinforcing member 84, the thickness T2 of the adhesive layer L of the adhesive material, and the thickness T3 of the left side window glass 68 are shown. Regarding the relationship, D ≧ T1 + T2 + T3, and it is particularly preferable that D = T1 + T2 + T3.

上述したとおりの、図1から図8までに示された油圧ショベル2のキャブ24の作用を説明する。本発明に係るキャブ24は、右前支柱34の没入された側面後端部34aと右側面窓ガラス82の前縁部82aとの間には補強部材84が介在されているため、その外観が損なわれることなく、左前支柱36よりも比較的高い剛性が要求される右前支柱34の剛性を向上することができる。   The operation of the cab 24 of the excavator 2 shown in FIGS. 1 to 8 as described above will be described. In the cab 24 according to the present invention, the reinforcing member 84 is interposed between the side rear end portion 34 a into which the right front column 34 is immersed and the front edge portion 82 a of the right side window glass 82. Accordingly, the rigidity of the right front column 34, which requires relatively higher rigidity than the left front column 36, can be improved.

又、本発明のキャブ24は、各前支柱34,36が略対称形状に形成されていても、右前支柱34の外面と右側面窓ガラス82の外面との間に生ずる段差が軽減されるので外観を向上することができる。更に、補強部材84はキャブ24の外表面に位置する右前支柱34の側面から突出していないため、補強部材84が取付けられていることによって視界性が損なわれることもない。   Further, in the cab 24 of the present invention, even if the front struts 34 and 36 are formed in a substantially symmetrical shape, a step generated between the outer surface of the right front strut 34 and the outer surface of the right side window glass 82 is reduced. The appearance can be improved. Further, since the reinforcing member 84 does not protrude from the side surface of the right front column 34 located on the outer surface of the cab 24, visibility is not impaired by the attachment of the reinforcing member 84.

尚、本実施例においては、キャブ24が上部旋回体22の左側に配設される場合に、右前支柱34の側面後端部34aと右側面窓ガラス82の前縁部82aとの間に補強部材84が介在されていることについて説明を行ったが、本発明のキャブはこれに限定されるものではない。即ち、キャブが上部旋回体の右側に配設されており、これによって右前支柱よりも左前支柱の方が比較的高い剛性が要求される場合には、左前支柱の側面後端部と左側面窓ガラスの前縁部との間に補強部材が介在されていてもよい。又、本発明のキャブは、油圧ショベルのキャブだけでなく、例えばクローラクレーン等その他建設機械のキャブにも適用することができる。   In this embodiment, when the cab 24 is disposed on the left side of the upper swing body 22, the reinforcement is provided between the side rear end portion 34 a of the right front column 34 and the front edge portion 82 a of the right side window glass 82. Although it has been described that the member 84 is interposed, the cab of the present invention is not limited to this. That is, when the cab is disposed on the right side of the upper swing structure and the left front column requires a relatively higher rigidity than the right front column, the side rear end of the left front column and the left side window A reinforcing member may be interposed between the front edge of the glass. The cab of the present invention can be applied not only to a cab of a hydraulic excavator but also to a cab of other construction machines such as a crawler crane.

2:油圧ショベル(建設機械)
24:キャブ
34:右前支柱
34a:側面後端部
34b:上端
36:左前支柱
36a:側面後端部
34b:上端
38:右後支柱
40:左後支柱
64:ドア
72:枠材
72a:前縁部
80:右側面板
82:右側面窓ガラス
82a:前縁部
84:補強部材
2: Excavator (construction machine)
24: Cab 34: Right front column 34a: Side rear end 34b: Upper end 36: Left front column 36a: Side rear end 34b: Upper end 38: Right rear column 40: Left rear column 64: Door 72: Frame material 72a: Front edge Portion 80: Right side plate 82: Right side window glass 82a: Front edge portion 84: Reinforcing member

Claims (3)

右前支柱、左前支柱、右後支柱及び左後支柱と、該右前支柱又は該左前支柱の少なくとも上部と該右後支柱又は該左後支柱の少なくとも上部との間に配設される窓ガラスと、閉じられた状態において該左前支柱又は該右前支柱の側面に当接されるドアとを具備し、
該右前支柱及び該左前支柱は略対称形状であり且つその側面後端部が内方に没入されており、
該窓ガラスの前縁部は該右前支柱又は該左前支柱の没入された該側面後端部に収容され、該ドアが閉じられた状態において該ドアの前縁部は該左前支柱又は該右前支柱の没入された該側面後端部に当接される建設機械のキャブにして、
該右前支柱又は該左前支柱の没入された該側面後端部と該窓ガラスの該前縁部との間には補強部材が介在されている、ことを特徴とする建設機械のキャブ。
A right front strut, a left front strut, a right rear strut and a left rear strut, and a window glass disposed between at least the top of the right front strut or the left front strut and at least the top of the right rear strut or the left rear strut; A door that is in contact with a side surface of the left front column or the right front column in the closed state;
The right front strut and the left front strut are substantially symmetrical, and the rear end of the side surface is immersed inward,
The front edge of the window glass is accommodated in the rear end of the right front column or the left front column where the left front column is immersed. When the door is closed, the front edge of the door is the left front column or the right front column. A cab of a construction machine to be in contact with the rear end of the side surface,
A cab for a construction machine, wherein a reinforcing member is interposed between the rear end portion of the side surface where the right front column or the left front column is immersed and the front edge portion of the window glass.
該補強部材は、該右前支柱又は該左前支柱の没入された該側面後端部に溶接によって接合され、且つ該窓ガラスの前縁部とは接着材料を介して接着されており、
該右前支柱又は該左前支柱の該側面後端部の没入深さをD、該補強部材の厚さをT1、該接着材料の接着層の厚さをT2、該窓ガラスの厚さをT3とすると、D≧T1+T2+T3である、請求項1記載の建設機械のキャブ。
The reinforcing member is bonded to the rear end of the side surface where the right front column or the left front column is immersed by welding, and is bonded to the front edge of the window glass via an adhesive material,
The immersion depth of the rear end of the side surface of the right front column or the left front column is D, the thickness of the reinforcing member is T1, the thickness of the adhesive layer of the adhesive material is T2, and the thickness of the window glass is T3. Then, the cab of the construction machine according to claim 1, wherein D ≧ T1 + T2 + T3.
該右前支柱又は該左前支柱の下部と該右後支柱又は該左後支柱の下部との間には側面板が配設されており、該窓ガラスは該側面板に続いてその上方に配設されており、該補強部材は該窓ガラスの下端縁に整合した下端から上方に延在している、請求項1又は2記載の建設機械のキャブ。   A side plate is disposed between the lower portion of the right front column or the left front column and the lower portion of the right rear column or the left rear column, and the window glass is disposed above the side plate after the side plate. The cab of a construction machine according to claim 1, wherein the reinforcing member extends upward from a lower end aligned with a lower end edge of the window glass.
JP2014106361A 2014-05-22 2014-05-22 Cab of construction machine Pending JP2015221973A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2014106361A JP2015221973A (en) 2014-05-22 2014-05-22 Cab of construction machine
CN201520282613.9U CN204781067U (en) 2014-05-22 2015-05-05 Cabin of construction machinery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2014106361A JP2015221973A (en) 2014-05-22 2014-05-22 Cab of construction machine

Publications (1)

Publication Number Publication Date
JP2015221973A true JP2015221973A (en) 2015-12-10

Family

ID=54521149

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2014106361A Pending JP2015221973A (en) 2014-05-22 2014-05-22 Cab of construction machine

Country Status (2)

Country Link
JP (1) JP2015221973A (en)
CN (1) CN204781067U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900004621A1 (en) * 2019-03-27 2020-09-27 Italcab S P A Anti-overturning structure for cabins

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7195805B2 (en) 2018-07-31 2022-12-26 株式会社小松製作所 working machine
JP7213762B2 (en) 2019-06-19 2023-01-27 株式会社小松製作所 cabs and work vehicles
CN112856108B (en) * 2021-01-11 2022-09-13 长沙众城机械有限公司 Engineering machine tool covering piece frame structure convenient to install

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07285469A (en) * 1994-04-16 1995-10-31 Hino Motors Ltd Cab structure for truck
JPH11324017A (en) * 1998-05-15 1999-11-26 Komatsu Ltd Wall panel raw material for cab of construction machine
JP2000144807A (en) * 1998-11-04 2000-05-26 Yutani Heavy Ind Ltd Molding glass for cabin of work machine
JP2000198469A (en) * 1998-10-31 2000-07-18 Press Kogyo Co Ltd Cab for construction equipment using cast iron joint
JP2002115268A (en) * 2000-10-04 2002-04-19 Press Kogyo Co Ltd Construction machinery cab
JP2003039946A (en) * 2001-07-31 2003-02-13 Press Kogyo Co Ltd Structure of fixed sash window for construction machine
JP2004090833A (en) * 2002-09-02 2004-03-25 Hitachi Constr Mach Co Ltd Cab for construction machine
JP2004106824A (en) * 2002-08-30 2004-04-08 Komatsu Ltd Cab structure for work vehicle
JP2004306893A (en) * 2003-04-10 2004-11-04 Komatsu Ltd Cab of construction machine
WO2005025965A2 (en) * 2003-09-09 2005-03-24 Komatsu Mfg Co Ltd Cab of construction machinery
JP2005231562A (en) * 2004-02-20 2005-09-02 Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd Cab panel structure of construction machine
JP2007196749A (en) * 2006-01-24 2007-08-09 Honda Motor Co Ltd Windshield structure for vehicle
JP2011202452A (en) * 2010-03-26 2011-10-13 Caterpillar Japan Ltd Cab protection structure of working machine

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07285469A (en) * 1994-04-16 1995-10-31 Hino Motors Ltd Cab structure for truck
JPH11324017A (en) * 1998-05-15 1999-11-26 Komatsu Ltd Wall panel raw material for cab of construction machine
JP2000198469A (en) * 1998-10-31 2000-07-18 Press Kogyo Co Ltd Cab for construction equipment using cast iron joint
JP2000144807A (en) * 1998-11-04 2000-05-26 Yutani Heavy Ind Ltd Molding glass for cabin of work machine
JP2002115268A (en) * 2000-10-04 2002-04-19 Press Kogyo Co Ltd Construction machinery cab
JP2003039946A (en) * 2001-07-31 2003-02-13 Press Kogyo Co Ltd Structure of fixed sash window for construction machine
JP2004106824A (en) * 2002-08-30 2004-04-08 Komatsu Ltd Cab structure for work vehicle
JP2004090833A (en) * 2002-09-02 2004-03-25 Hitachi Constr Mach Co Ltd Cab for construction machine
JP2004306893A (en) * 2003-04-10 2004-11-04 Komatsu Ltd Cab of construction machine
US20050006157A1 (en) * 2003-04-10 2005-01-13 Hiroyuki Shioji Cab for construction machine
WO2005025965A2 (en) * 2003-09-09 2005-03-24 Komatsu Mfg Co Ltd Cab of construction machinery
US20070024088A1 (en) * 2003-09-09 2007-02-01 Tadashi Mori Cab for construction machinery
JP2005231562A (en) * 2004-02-20 2005-09-02 Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd Cab panel structure of construction machine
JP2007196749A (en) * 2006-01-24 2007-08-09 Honda Motor Co Ltd Windshield structure for vehicle
JP2011202452A (en) * 2010-03-26 2011-10-13 Caterpillar Japan Ltd Cab protection structure of working machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900004621A1 (en) * 2019-03-27 2020-09-27 Italcab S P A Anti-overturning structure for cabins

Also Published As

Publication number Publication date
CN204781067U (en) 2015-11-18

Similar Documents

Publication Publication Date Title
JP4201126B2 (en) Construction machinery cab
JP4906132B2 (en) Cab in construction machinery
JP2015221973A (en) Cab of construction machine
JP5635718B1 (en) Cab and work vehicle
JP2004042739A (en) Driver's cab in work vehicle
JPWO2006008985A1 (en) Construction machinery cab
WO2014076763A1 (en) Hydraulic shovel
JP5996122B2 (en) Work vehicle cab and manufacturing method thereof
JP4673009B2 (en) Construction machinery cab
JP6915952B2 (en) Work machine
JP2014198935A (en) Cabin apparatus of work machine
KR101131506B1 (en) Revolving work vehicle
JP2007046233A (en) Construction machine
JP2020060015A (en) Cab and work machine
KR101688499B1 (en) Construction machine
JP4327658B2 (en) Construction machinery cab
US20220220700A1 (en) Work vehicle
JP5991350B2 (en) Construction machinery cab
JP2001182098A (en) Cab for construction machinery
JP2012149447A (en) Construction machine
JP6867326B2 (en) Construction machinery
JP5065968B2 (en) Column support member and construction machine cab
WO2018101148A1 (en) Construction machinery
JP5132357B2 (en) Work vehicle
JP2004238122A (en) Cab for construction machine

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20140603

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20161116

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20171024

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20171031

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20180529