JP3971179B2

JP3971179B2 - Backhoe bonnet side wall mounting structure and mounting method

Info

Publication number: JP3971179B2
Application number: JP2001386688A
Authority: JP
Inventors: 浩也花野
Original assignee: Kubota Corp
Current assignee: Kubota Corp
Priority date: 2001-12-19
Filing date: 2001-12-19
Publication date: 2007-09-05
Anticipated expiration: 2021-12-19
Also published as: JP2003184833A

Description

【０００１】
【発明の属する技術分野】
本発明は、バックホーのボンネット側壁部の取付構造及び取付方法に関するものである。
【０００２】
【従来の技術】
従来、例えばバックホーにおいては、エンジンやマフラー等を覆うボンネットが設けられ、ボンネットはボンネット前壁部（取付部材）と左右一対のボンネット側壁部（被取付部材）と、ボンネット側壁部の後端部間に位置するボンネット後壁部とを備え、ボンネットの左右両側部の後方に、ウエイト兼用の左右一対のプロテクタ（邪魔部材）が設けられたものがある。そして、ボンネットのボンネット前壁部に対して、左右一対のボンネット側壁部を複数箇所でボルト等の締結具によって複数箇所で締め付けて固定するようにしている。
【０００３】
【発明が解決しようとする課題】
従って、ボンネット側壁部をプロテクタとボンネット前壁部との間に挿入して、ボルト等の締結具でボンネット前壁部に装着する必要があり、ボンネット側壁部の取付箇所がプロテクタの前方に位置する場合に、プロテクタが邪魔になって、ボルト等の締結具の脱着が非常に面倒になり、取付部材に対してボンネット側壁部を着脱することが困難になった。
本発明は上記問題点に鑑み、プロテクタがあっても取付部材に対してボンネット側壁部を簡単に着脱し得るようにしたものである。
【０００４】
【課題を解決するための手段】
この技術的課題を解決する本発明の技術的手段は、走行装置３上に上下方向の軸心回りに旋回自在に支持された旋回台６上にボンネット１３を備え、このボンネット側壁部１５の後部側に、該側壁部１５外面に対向状としてプロテクタ１７を備えたバックホーのボンネット側壁部の取付構造において、
ボンネット側壁部１５は、プロテクタ１７との対向面がボンネット側壁部１５に設けた係合部材３７とプロテクタ１７に設けた係止部材４２とで固定され且つプロテクタ１７との対向面以外の部分が複数箇所で旋回台６側の取付部材１４にボルト固定され、前記係合部材３７はボンネット側壁部１５からプロテクタ１７に向けて突出されていると共に突出方向中途部に係合部３８が設けられ、前記係止部材４２は上方に向けて拡開するＶ字状の係止溝４３を備えると共にこの係止溝４３の底部を前記係合部３８が上方側から係合する係止部４４とし且つ該係止溝４３の底部の両側が前記係合部３８を前記係止部４４に案内する案内面４５とされ、前記係合部材３７には、係合部３８を係止部４４に案内するように係合部３８に向けて徐々に細くなるテーパー面３９，４０が係合部３８の係合部材突出方向両側に形成され、ボンネット側壁部１５に形成された取付孔５０を挿通し且つ係合部材３７に形成したねじ孔５４に螺合されるボルト４９によって係合部材３７がボンネット側壁部１５に取り付けられ、ボンネット側壁部１５のプロテクタ１７との対向面以外の部分を前記取付部材１４にボルト３５で固定する際において、係合部材３７をボルト４９によってボンネット側壁部１５に仮止めした状態とすることにより係合部３８が係止部４４に正確に係合するように、前記取付孔５０をバカ孔に形成した点にある。
本発明の他の技術的手段は、走行装置３上に上下方向の軸心回りに旋回自在に支持された旋回台６上にボンネット１３を備え、このボンネット側壁部１５の後部側に、該側壁部１５外面に対向状としてプロテクタ１７を備えたバックホーのボンネット側壁部の取付方法であって、
ボンネット側壁部１５は、プロテクタ１７との対向面がボンネット側壁部１５に設けた係合部材３７とプロテクタ１７に設けた係止部材４２とで固定され且つプロテクタ１７との対向面以外の部分が複数箇所で旋回台６側の取付部材１４にボルト固定され、前記係合部材３７はボンネット側壁部１５からプロテクタ１７に向けて突出されていると共に突出方向中途部に係合部３８が設けられ、前記係止部材４２は上方に向けて拡開するＶ字状の係止溝４３を備えると共にこの係止溝４３の底部を前記係合部３８が上方側から係合する係止部４４とし且つ該係止溝４３の底部の両側が前記係合部３８を前記係止部４４に案内する案内面４５とされ、前記係合部材３７には、係合部３８を係止部４４に案内するように係合部３８に向けて徐々に細くなるテーパー面３９，４０が係合部３８の係合部材突出方向両側に形成され、ボンネット側壁部１５に形成された取付孔５０を挿通し且つ係合部材３７に形成したねじ孔５４に螺合されるボルト４９によって係合部材３７がボンネット側壁部１５に取り付けられ、前記取付孔５０はバカ孔により形成されており、
前述した構成のバックホーのボンネット側壁部１５を前記取付部材１４に取り付ける際において、係合部材３７をボルト４９によってボンネット側壁部１５に仮止めし、その後、係合部材３７を係止部材４２に上方側から係合すると共にボルト３５によってボンネット側壁部１５を取付部材１４に固定し、その後、係合部材３７をボルト４９によりボンネット側壁部１５に対して本締めした点にある。
【０００５】
【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説明する。
図４において、１は旋回作業機として例示するバックホーであり、該バックホー１は上部の旋回体２と、下部の走行装置３とから主構成されており、旋回台６が上下軸Ｓ廻りに旋回しても、該旋回台６の後面側が走行装置３の左右幅外にはみ出さないように、旋回台６の後面側を平面視弧状（略円弧状）に構成した小型の後方小旋回バックホーと称されるものである。
【０００６】
なお、バックホー１の走行方向（図１の左右方向）を前後方向といい、この前後方向に直交する横方向（図１の紙面貫通方向）を左右方向という。
走行装置３は、トラックフレーム３Ａの左右両側に、アイドラ３Ｂ、駆動輪３Ｃ、トラックローラ及びキャリアローラを回転自在に支持し、これらにゴムクローラ形式（又は鉄クローラ形式）のクローラ走行体４を巻き掛け、駆動輪３Ｃを油圧モータ等で駆動してなるクローラ式走行装置が採用されている。走行装置３の前部にはドーザ５が備えられている。
【０００７】
旋回体２は、走行装置３上に上下方向の軸心回りに旋回自在に支持された旋回台６と、旋回台６の前部に設けられた作業装置（掘削装置）７と、旋回台６上に設けられた運転席８と、エンジン，燃料タンク，油圧ポンプ，作動油タンク，ラジエータ，バッテリー，マフラー，エアクリーナー等の旋回台６に搭載された各種機器等とを備えて構成されている。旋回台６には、該旋回台６に搭載されたエンジン，燃料タンク等の各種機器を覆うボンネット１３が設けられている。
運転席８は、旋回台６の前後方向中途部で、左右方向中央部から左寄りに配置され、クッション部材等を介して旋回台６又はボンネット前壁部１４等に支持されている。
【０００８】
旋回台６は、旋回フレーム１９と、この旋回フレーム１９の後部に取付固定されていて、エンジン等と共に旋回台６前部に備えた作業装置７等に対する重量バランスを図り且つ旋回台６の後部を構成するカウンタウエイト２０とから主構成されている。
また、旋回フレーム１９の左右側面、前面及び上面の運転席８前方側等は適宜カバー体２３等によって覆われている。
旋回フレーム１９は、走行装置３上に旋回ベアリング２１を介して上下軸廻りに旋回自在に支持された旋回基板２２を備えると共に、この旋回基板２２上に補強部材や、各種機器等を取付固定するための取付部材等を固定してなる。
【０００９】
旋回基板２２の前部には、旋回台６から前方突出状に上下一対の支持ブラケット２６が設けられ、この支持ブラケット２６には、揺動ブラケット２７が上下軸廻りに左右揺動自在に支持されている。
図５〜図７において、前記ボンネット１３は、ボンネット前壁部（取付部材）１４と左右一対のボンネット側壁部（被取付部材）１５とボンネット後壁部１６とを有している。ボンネット後壁部１６は、その上端側がボンネット前壁部１４等に左右軸廻りに上下揺動自在に取り付けられていて、開閉自在とされている。ボンネット１３の左右両側部の後方に、ウエイト兼用の左右一対のプロテクタ（邪魔部材）１７が設けられている。
【００１０】
左右一対のボンネット側壁部１５は後端側が左右方向内方に湾曲され、各ボンネット側壁部１５の後部は、ボンネット前壁部１４とプロテクタ１７との間に位置している。ボンネット側壁部１５の前端部下端、前端部上端、後端部上端の３箇所に、取付孔３１が形成され、ボンネット前壁部１４の左右方向の外側部に、ねじ孔３３を有する取付片３４が突設され、ボルト等の締結具３５によって、取付孔３１及び取付片３４のねじ孔３３を介してボンネット側壁部１５をボンネット前壁部１４に締付固定するようになっている。
【００１１】
ボンネット側壁部１５のプロテクタ１７に対応する後端部下部側に、係合部材３７が後方突設されている。プロテクタ１７に係止部材４２が設けられている。係止部材４２は板材により構成されてボルト等の締結具４１によりプロテクタ１７の前面に締付固定されている。
図１〜図３に示すように、係合部材３７の突出方向の中途部に係合部３８が設けられ、係合部３８の前後両側に、係合部３８に向けて徐々に細くなる一対のテーパー面３９，４０が形成されている。
【００１２】
各係止部材４２の上部にＶ字状の係止溝４３が設けられ、該係止溝４３の底部が係止部４４とされ、係止溝４３の底部両側が、係合部材３７の係合部３８を係止部４４に案内する左右一対の案内面４５とされている。
前記係合部材３７の一対のテーパー面３９，４０及び係止部材４２の一対の案内面４５により、係合部材３７の係合部３８を係止部材４２の係止部４４に案内する案内機構４７が構成されており、一対の案内面４５が、係合部材３７の係合部を左右方向に案内して、係止部材４２の係止部４４に対して左右方向に一致させ、また、一対のテーパー面３９，４０が、係合部材３７の係合部３８を前後方向に案内して、係止部材４２の係止部４４に対して前後方向に一致させるようになっている。
【００１３】
ボンネット側壁部１５に、係合部材３７をボルト等の取付具４９により取り付けるようになっており、ボンネット側壁部１５に、係合部材３７をボルト等の取付具４９により取り付けるための取付孔５０が形成されている。この取付孔５０はバカ孔により形成され、取付具４９の頭部４９ａとボンネット側壁部１５との間に取付孔５０よりも大きな座金５２を介在し、係合部材３７のねじ孔５４に取付具４９を螺合して締め付けることにより、係合部材３７をボンネット側壁部１５に締め付け固定している。
【００１４】
なお、図５〜図７に示すように、プロテクタ１７に開口孔２９，３０が設けられており、前記係合部材３７は一方の開口孔２９に対応する位置にある。
上記実施の形態によれば、ボンネット側壁部１５に係合部材３７をボルト等の取付具４９により取り付ける際に、まず、ボンネット側壁部１５に取付孔５０をバカ孔により形成しておき、係合部材３７をボルト等の取付具４９により仮止めした後、締付具３５によって複数箇所でボンネット側壁部１５をボンネット前壁部１６に締め付け固定すると共に、係合部材３７の係合部３８を係止部材４２の係止部４４に係合し、その後、係合部材３７をボルト等の取付具４９によりボンネット側壁部１５に対して本締めすればよい。
【００１５】
これにより、係合部材３７の係合部３８を係止部材４２の係止部４４に係合したときに、ボンネット側壁部１５を、ボンネット前壁部１４の取付位置に正確かつ簡単に位置決めできるように、係合部材３７を、ボンネット側壁部１５に対して位置調整しながら締め付け固定することができる。
そして、ボンネット側壁部１５をボンネット前壁部１４から取り外す場合には、各締結具３５を取り外した後、ボンネット側壁部１５を上方に持ち上げればよく、係合部材３７の係合部３８が係止部材４２の係止部４４から簡単に外れ、プロテクタ１７が邪魔になるようなこともなく、ボンネット側壁部１５をボンネット前壁部１４から簡単に取り外すことができる。
【００１６】
また、再び、ボンネット側壁部１５をボンネット前壁部１４に取り付ける場合には、ボンネット側壁部１５をボンネット前壁部１４とプロテクタ１７との間に挿入して、係合部材３７を一対のテーパー面３９，４０間を、係止部材４２の係止溝４３に挿入係合させると、テーパー面３９，４０が係止溝４３の案内面４５を摺動して、一対の案内面４５が、係合部材３７の係合部３８を左右方向に案内し、係止部材４２の係止部４４に対して左右方向に一致させる。また、一対のテーパー面３９，４０が、係合部材３７の係合部３８を前後方向に案内し、係止部材４２の係止部４４に対して前後左右方向に一致させる。その結果、係合部３８が係止部４４に簡単かつ確実に係合し、この係合によって、ボンネット側壁部１５が、ボンネット前壁部１４の取付位置に位置決めされ、ボンネット側壁部１５を係合部３８を支点に揺動調整することにより、ボンネット側壁部１５の取付孔３１をボンネット前壁部１４の各取付片３４のねじ孔３３に対して、確実かつ簡単に一致させることができ、プロテクタ１７が邪魔になるようなこともなく、複数の締結具３５によって、簡単にボンネット側壁部１５をボンネット前壁部１４に対して複数箇所で締め付け固定することができる。
【００１７】
【発明の効果】
本発明によれば、プロテクタ１７があっても取付部材１４に対してボンネット側壁部１５を簡単に取り付け固定することができるし、簡単に取り外すこともできる。
【図面の簡単な説明】
【図１】本発明の一実施の形態を示す係合部材及び係止部材部分の斜視図である。
【図２】同係合部材及び係止部材部分の背面断面図である。
【図３】同係合部材及び係止部材部分の側面断面図である。
【図４】同バックホーの全体側面図である。
【図５】同旋回体の背面図である。
【図６】同ボンネット及びプロテクタ部分の斜視図である。
【図７】同ボンネット及びプロテクタ部分の分解斜視図である。
【符号の説明】
１４ボンネット前壁部（取付部材）
１５ボンネット側壁部（被取付部材）
１７プロテクタ（邪魔部材）
３５締結具
３７係合部材
３８係合部
３９テーパー面
４０テーパー面
４２係止部材
４４係止部
４５案内面
４７案内機構
４９取付具
５０取付孔[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mounting structure and a mounting method for a bonnet side wall portion of a backhoe .
[0002]
[Prior art]
Conventionally, for example, in a backhoe, a bonnet that covers an engine, a muffler, and the like is provided, and the bonnet is between a bonnet front wall (attachment member), a pair of left and right bonnet side walls (attached member), and a rear end of the bonnet side wall And a pair of left and right protectors (baffle members) that also serve as weights are provided behind the left and right side portions of the bonnet. Then, a pair of left and right bonnet side wall portions are tightened and fixed at a plurality of locations with a fastener such as a bolt at a plurality of locations with respect to the bonnet front wall portion of the bonnet.
[0003]
[Problems to be solved by the invention]
Therefore, it is necessary to insert the bonnet side wall portion between the protector and the bonnet front wall portion and attach the bonnet side wall portion to the bonnet front wall portion with a fastener such as a bolt, and the attachment location of the bonnet side wall portion is located in front of the protector. In this case, the protector becomes an obstacle, and the attachment / detachment of the fasteners such as bolts becomes very troublesome, and it becomes difficult to attach and detach the bonnet side wall to the attachment member.
In view of the above-described problems, the present invention is configured so that the bonnet side wall can be easily attached to and detached from the attachment member even if there is a protector .
[0004]
[Means for Solving the Problems]
The technical means of the present invention for solving this technical problem includes a bonnet 13 on a swivel 6 supported on a traveling device 3 so as to be pivotable about a vertical axis, and a rear portion of the bonnet side wall 15. On the side, in the mounting structure of the bonnet side wall portion of the backhoe provided with the protector 17 as opposed to the outer surface of the side wall portion 15 ,
The bonnet side wall 15 is fixed by an engagement member 37 provided on the bonnet side wall 15 and an engaging member 42 provided on the protector 17, and a plurality of portions other than the surface opposite the protector 17 are provided. The fastening member 14 is bolted to the mounting member 14 on the swivel base 6, the engaging member 37 protrudes from the bonnet side wall 15 toward the protector 17, and an engaging portion 38 is provided in the protruding direction midway. The locking member 42 includes a V-shaped locking groove 43 that expands upward, and the bottom of the locking groove 43 is used as a locking portion 44 that the engaging portion 38 engages from above. Both sides of the bottom of the locking groove 43 serve as guide surfaces 45 for guiding the engaging portion 38 to the locking portion 44, and the engaging member 37 guides the engaging portion 38 to the locking portion 44. Gradually toward the engaging portion 38 The tapered surfaces 39 and 40 are formed on both sides of the engaging portion 38 in the protruding direction of the engaging member, and are screwed into the screw holes 54 formed in the engaging member 37 through the mounting holes 50 formed in the bonnet side wall portion 15. When the engaging member 37 is attached to the bonnet side wall 15 by the bolt 49 to be fixed, and the portion other than the surface facing the protector 17 of the bonnet side wall 15 is fixed to the mounting member 14 with the bolt 35, the engaging member 37 The mounting hole 50 is formed in the fool hole so that the engaging portion 38 is accurately engaged with the locking portion 44 by temporarily fixing the screw to the bonnet side wall portion 15 with a bolt 49 .
Another technical means of the present invention is provided with a bonnet 13 on a swivel base 6 that is supported on a traveling device 3 so as to be pivotable about an axis in the vertical direction. It is a method of attaching the bonnet side wall portion of the backhoe provided with the protector 17 as an opposing shape on the outer surface of the portion 15,
The bonnet side wall 15 is fixed by an engagement member 37 provided on the bonnet side wall 15 and an engaging member 42 provided on the protector 17, and a plurality of portions other than the surface opposite the protector 17 are provided. The fastening member 14 is bolted to the mounting member 14 on the swivel base 6, the engaging member 37 protrudes from the bonnet side wall 15 toward the protector 17, and an engaging portion 38 is provided in the protruding direction midway. The locking member 42 includes a V-shaped locking groove 43 that expands upward, and the bottom of the locking groove 43 is used as a locking portion 44 that the engaging portion 38 engages from above. Both sides of the bottom of the locking groove 43 serve as guide surfaces 45 for guiding the engaging portion 38 to the locking portion 44, and the engaging member 37 guides the engaging portion 38 to the locking portion 44. Gradually toward the engaging portion 38 The tapered surfaces 39 and 40 are formed on both sides of the engaging portion 38 in the protruding direction of the engaging member, and are screwed into the screw holes 54 formed in the engaging member 37 through the mounting holes 50 formed in the bonnet side wall portion 15. The engaging member 37 is attached to the bonnet side wall 15 by the bolt 49, and the attachment hole 50 is formed by a fool hole,
When the bonnet side wall 15 of the backhoe having the above-described configuration is attached to the mounting member 14, the engaging member 37 is temporarily fixed to the bonnet side wall 15 by the bolt 49 , and then the engaging member 37 is moved upward to the locking member 42. The bonnet side wall 15 is fixed to the mounting member 14 by the bolt 35 while being engaged from the side, and then the engagement member 37 is finally tightened to the bonnet side wall 15 by the bolt 49.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In FIG. 4, reference numeral 1 denotes a backhoe exemplified as a turning work machine. The backhoe 1 is mainly composed of an upper turning body 2 and a lower traveling device 3, and a turntable 6 turns around a vertical axis S. Even so, a small rear small swivel backhoe in which the rear surface side of the swivel base 6 is formed in an arc shape (substantially arc shape) in plan view so that the rear surface side of the swivel base 6 does not protrude beyond the lateral width of the traveling device 3. It is called.
[0006]
Note that the traveling direction of the backhoe 1 (the left-right direction in FIG. 1) is referred to as the front-rear direction, and the lateral direction orthogonal to the front-rear direction (the paper penetration direction in FIG. 1) is referred to as the left-right direction.
The traveling device 3 rotatably supports idlers 3B, drive wheels 3C, track rollers, and carrier rollers on both left and right sides of the track frame 3A, and a crawler traveling body 4 of a rubber crawler type (or iron crawler type) is wound around these. A crawler type traveling device is employed in which the driving wheel 3C is driven by a hydraulic motor or the like. A dozer 5 is provided at the front of the traveling device 3.
[0007]
The swivel body 2 includes a swivel base 6 that is supported on the traveling device 3 so as to be pivotable about a vertical axis, a working device (excavation device) 7 provided at a front portion of the swivel base 6, and the swivel base 6. A driver's seat 8 provided above and various devices mounted on the swivel base 6 such as an engine, a fuel tank, a hydraulic pump, a hydraulic oil tank, a radiator, a battery, a muffler, and an air cleaner are configured. . The swivel base 6 is provided with a bonnet 13 that covers various devices such as an engine and a fuel tank mounted on the swivel base 6.
The driver's seat 8 is arranged in the middle in the front-rear direction of the swivel base 6 and is located to the left from the central part in the left-right direction, and is supported by the swivel base 6 or the bonnet front wall part 14 via a cushion member or the like.
[0008]
The swivel base 6 is attached and fixed to the swivel frame 19 and the rear part of the swivel frame 19 to balance the weight with respect to the working device 7 and the like provided in the front part of the swivel base 6 together with the engine and the like. The counter weight 20 is a main component.
Further, the left and right side surfaces, the front surface, and the front side of the driver's seat 8 on the upper surface of the revolving frame 19 are appropriately covered with a cover body 23 and the like.
The swivel frame 19 includes a swivel board 22 supported on the travel device 3 via a swivel bearing 21 so as to be pivotable about a vertical axis, and a reinforcing member, various devices, and the like are mounted and fixed on the swivel board 22. For this purpose, an attachment member or the like is fixed.
[0009]
A pair of upper and lower support brackets 26 are provided in front of the swivel board 22 so as to protrude forward from the swivel base 6, and a swing bracket 27 is supported on the support bracket 26 so as to be swingable left and right around the vertical axis. ing.
5 to 7, the bonnet 13 has a bonnet front wall part (attachment member) 14, a pair of left and right bonnet side wall parts (attachment members) 15, and a bonnet rear wall part 16. The bonnet rear wall portion 16 has an upper end attached to the bonnet front wall portion 14 and the like so as to be swingable up and down around the left and right axis, and is openable and closable. A pair of left and right protectors (baffle members) 17 serving as weights are provided behind the left and right sides of the bonnet 13.
[0010]
The pair of left and right bonnet side wall portions 15 is curved inward in the left-right direction at the rear end side, and the rear portion of each bonnet side wall portion 15 is located between the bonnet front wall portion 14 and the protector 17. Mounting holes 31 are formed at three locations of the lower end of the front end, the upper end of the front end, and the upper end of the rear end of the bonnet side wall 15, and mounting pieces 34 having screw holes 33 on the outer side in the left-right direction of the bonnet front wall 14. The bonnet side wall 15 is fastened and fixed to the bonnet front wall 14 via the mounting hole 31 and the screw hole 33 of the mounting piece 34 by a fastener 35 such as a bolt.
[0011]
An engaging member 37 is protruded rearward on the lower side of the rear end corresponding to the protector 17 of the bonnet side wall 15. A locking member 42 is provided on the protector 17. The locking member 42 is made of a plate material and is fastened and fixed to the front surface of the protector 17 by a fastener 41 such as a bolt.
As shown in FIGS. 1 to 3, an engagement portion 38 is provided at a midway portion in the protruding direction of the engagement member 37, and a pair that gradually narrows toward the engagement portion 38 on both front and rear sides of the engagement portion 38. Taper surfaces 39 and 40 are formed.
[0012]
A V-shaped locking groove 43 is provided at the top of each locking member 42, the bottom of the locking groove 43 is a locking portion 44, and both sides of the bottom of the locking groove 43 are engaged with the engaging member 37. A pair of left and right guide surfaces 45 for guiding the joint portion 38 to the locking portion 44 is provided.
A guide mechanism for guiding the engaging portion 38 of the engaging member 37 to the engaging portion 44 of the engaging member 42 by the pair of tapered surfaces 39, 40 of the engaging member 37 and the pair of guide surfaces 45 of the engaging member 42. 47, and the pair of guide surfaces 45 guide the engaging portion of the engaging member 37 in the left-right direction so as to coincide with the engaging portion 44 of the engaging member 42 in the left-right direction. The pair of tapered surfaces 39, 40 guide the engaging portion 38 of the engaging member 37 in the front-rear direction so as to coincide with the engaging portion 44 of the engaging member 42 in the front-rear direction.
[0013]
The engaging member 37 is attached to the bonnet side wall 15 with a mounting tool 49 such as a bolt, and the mounting hole 50 for mounting the engaging member 37 to the bonnet side wall 15 using a mounting tool 49 such as a bolt is provided. Is formed. The mounting hole 50 is formed by a fool hole, and a washer 52 larger than the mounting hole 50 is interposed between the head 49 a of the mounting tool 49 and the bonnet side wall portion 15, and the mounting tool is inserted into the screw hole 54 of the engaging member 37. The engagement member 37 is fastened and fixed to the bonnet side wall portion 15 by screwing and fastening 49.
[0014]
As shown in FIGS. 5 to 7, opening holes 29 and 30 are provided in the protector 17, and the engaging member 37 is in a position corresponding to one opening hole 29.
According to the above-described embodiment, when the engaging member 37 is attached to the bonnet side wall 15 with the attachment 49 such as a bolt, the attachment hole 50 is first formed in the bonnet side wall 15 by the fool hole, After the member 37 is temporarily fixed by a mounting tool 49 such as a bolt, the bonnet side wall 15 is fastened and fixed to the bonnet front wall 16 at a plurality of locations by the fastener 35 and the engaging portion 38 of the engaging member 37 is engaged. The engaging member 37 may be engaged with the locking portion 44 of the stopping member 42 and then the fastening member 49 may be finally tightened with respect to the bonnet side wall portion 15 with a fixture 49 such as a bolt.
[0015]
Thereby, when the engaging part 38 of the engaging member 37 is engaged with the engaging part 44 of the engaging member 42, the bonnet side wall part 15 can be accurately and easily positioned at the attachment position of the bonnet front wall part 14. Thus, the engaging member 37 can be fastened and fixed while adjusting the position with respect to the bonnet side wall 15.
And when removing the bonnet side wall part 15 from the bonnet front wall part 14, after removing each fastener 35, the bonnet side wall part 15 should just be lifted upwards, and the engaging part 38 of the engaging member 37 is engaged. The bonnet side wall 15 can be easily removed from the bonnet front wall 14 without being easily disengaged from the locking portion 44 of the stop member 42 and preventing the protector 17 from getting in the way.
[0016]
Moreover, when attaching the bonnet side wall part 15 to the bonnet front wall part 14 again, the bonnet side wall part 15 is inserted between the bonnet front wall part 14 and the protector 17, and the engaging member 37 is paired with a pair of tapered surfaces. When 39 and 40 are inserted and engaged with the locking groove 43 of the locking member 42, the tapered surfaces 39 and 40 slide on the guide surface 45 of the locking groove 43, and the pair of guide surfaces 45 are engaged. The engaging portion 38 of the joint member 37 is guided in the left-right direction so as to match the locking portion 44 of the locking member 42 in the left-right direction. Further, the pair of tapered surfaces 39 and 40 guide the engaging portion 38 of the engaging member 37 in the front-rear direction, and match the engaging portion 44 of the engaging member 42 in the front-rear and left-right directions. As a result, the engaging portion 38 is easily and reliably engaged with the locking portion 44, and by this engagement, the bonnet side wall portion 15 is positioned at the mounting position of the bonnet front wall portion 14, and the bonnet side wall portion 15 is engaged. By swinging and adjusting the joint portion 38 as a fulcrum, the mounting hole 31 of the bonnet side wall 15 can be reliably and easily aligned with the screw hole 33 of each mounting piece 34 of the bonnet front wall 14, The protector 17 does not get in the way, and the bonnet side wall 15 can be easily clamped and fixed to the bonnet front wall 14 at a plurality of locations by the plurality of fasteners 35.
[0017]
【The invention's effect】
According to the present invention, even if the protector 17 is present, the bonnet side wall 15 can be easily attached and fixed to the attachment member 14 and can be easily removed.
[Brief description of the drawings]
FIG. 1 is a perspective view of an engaging member and a locking member portion showing an embodiment of the present invention.
FIG. 2 is a rear sectional view of the engaging member and the locking member portion.
FIG. 3 is a side sectional view of the engaging member and the locking member portion.
FIG. 4 is an overall side view of the backhoe.
FIG. 5 is a rear view of the revolving structure.
FIG. 6 is a perspective view of the bonnet and the protector part.
FIG. 7 is an exploded perspective view of the bonnet and the protector portion.
[Explanation of symbols]
14 Bonnet front wall (mounting member)
15 Bonnet side wall (attached member)
17 Protector (Baffle member)
35 Fastener 37 Engagement member 38 Engagement part 39 Tapered surface 40 Taper surface 42 Locking member 44 Locking part 45 Guide surface 47 Guide mechanism 49 Mounting tool 50 Mounting hole

Claims

A bonnet (13) is provided on a swivel base (6) supported so as to be pivotable about a vertical axis on the traveling device (3), and the side wall portion (15) is provided on the rear side of the bonnet side wall portion (15). 15) In the mounting structure of the bonnet side wall portion of the backhoe provided with the protector (17) as opposed to the outer surface ,
The bonnet side wall (15) is fixed by an engaging member (37) provided on the bonnet side wall (15) and a locking member (42) provided on the protector (17) on the surface facing the protector (17). And the parts other than the surface facing the protector (17) are bolted to the mounting member (14) on the swivel base (6) at a plurality of locations, and the engaging member (37) is connected to the protector ( 17) and an engaging portion (38) is provided in the middle in the protruding direction, and the locking member (42) is V-shaped locking groove (43) that expands upward. And the bottom of the locking groove (43) is used as a locking portion (44) with which the engaging portion (38) engages from above, and both sides of the bottom of the locking groove (43) are engaged. The guide surface (45) guides the portion (38) to the locking portion (44). The engaging member (37) has a tapered surface (39, 40) that gradually narrows toward the engaging portion (38) so as to guide the engaging portion (38) to the engaging portion (44). A screw hole (54) formed on both sides of the engagement member (38) in the direction of protrusion of the engagement member, through the attachment hole (50) formed in the bonnet side wall (15) and formed in the engagement member (37). The engaging member (37) is attached to the bonnet side wall (15) by the bolt (49) to be screwed, and the portion other than the surface of the bonnet side wall (15) facing the protector (17) is the mounting member (14). ) With the bolt (35), the engagement member (37) is temporarily fixed to the bonnet side wall (15) with the bolt (49), so that the engagement portion (38) is engaged with the locking portion ( 44) so that the mounting holes (5) Mounting structure of the hood side wall portion of the backhoe, characterized in that) was formed on the clearance hole.

A bonnet (13) is provided on a swivel base (6) supported so as to be pivotable about a vertical axis on the traveling device (3), and the side wall portion (15) is provided on the rear side of the bonnet side wall portion (15). 15) A method of attaching a hood side wall of a backhoe having a protector (17) as an opposing shape on the outer surface,
The bonnet side wall (15) is fixed by an engaging member (37) provided on the bonnet side wall (15) and a locking member (42) provided on the protector (17) on the surface facing the protector (17). And the parts other than the surface facing the protector (17) are bolted to the mounting member (14) on the swivel base (6) at a plurality of locations, and the engaging member (37) is connected to the protector ( 17) and an engaging portion (38) is provided in the middle in the protruding direction, and the locking member (42) is V-shaped locking groove (43) that expands upward. And the bottom of the locking groove (43) is used as a locking portion (44) with which the engaging portion (38) engages from above, and both sides of the bottom of the locking groove (43) are engaged. The guide surface (45) guides the portion (38) to the locking portion (44). The engaging member (37) has a tapered surface (39, 40) that gradually narrows toward the engaging portion (38) so as to guide the engaging portion (38) to the engaging portion (44). A screw hole (54) formed on both sides of the engagement member (38) in the direction of protrusion of the engagement member, through the attachment hole (50) formed in the bonnet side wall (15) and formed in the engagement member (37). The engagement member (37) is attached to the bonnet side wall (15) by a bolt (49) to be screwed, and the attachment hole (50) is formed by a fool hole,
When the bonnet side wall portion (15) of the backhoe having the above-described configuration is attached to the attachment member (14), the engaging member (37) is temporarily fixed to the bonnet side wall portion (15) with the bolt (49) , and then the engagement member (37) is engaged. The joint member (37) is engaged with the locking member (42) from above and the bonnet side wall (15) is fixed to the mounting member (14) by the bolt (35). A method for attaching the bonnet side wall of the backhoe, wherein the bonnet side wall (15) is finally tightened with a bolt (49).