JPH09125459A - Handrail of construction machine - Google Patents
Handrail of construction machineInfo
- Publication number
- JPH09125459A JPH09125459A JP28542095A JP28542095A JPH09125459A JP H09125459 A JPH09125459 A JP H09125459A JP 28542095 A JP28542095 A JP 28542095A JP 28542095 A JP28542095 A JP 28542095A JP H09125459 A JPH09125459 A JP H09125459A
- Authority
- JP
- Japan
- Prior art keywords
- pipe member
- pipe
- handrail
- connecting pin
- diameter portion
- 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.)
- Granted
Links
Landscapes
- Steps, Ramps, And Handrails (AREA)
- Component Parts Of Construction Machinery (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、油圧ショベル等の
建設機械の機体に取り付けられる昇降用のハンドレール
（手すり）に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting handrail (handrail) attached to the body of a construction machine such as a hydraulic excavator.
【０００２】[0002]
【従来の技術】建設機械、例えば油圧ショベルは、下部
走行体上に旋回自在に支持された上部旋回体、すなわち
機体を備えている。キャブ、エンジン、燃料タンク、ス
トレージボックス（ツールボックス）、作業機等が装着
されている機体には、オペレータが昇降するためのハン
ドレールが取り付けられている。ハンドレールの典型例
としては、一本のパイプ部材からなり、その一端が、機
体の片側に配置された燃料タンクの上部にボルトにより
離脱自在に取り付けられ、他端が燃料タンクと同様に機
体の片側に配置されたストレージボックスの前部にボル
トにより離脱自在に取り付けられたものを挙げることが
できる。ハンドレールは全体として略Ｕ形に折り曲げ形
成されている。2. Description of the Related Art A construction machine such as a hydraulic excavator is provided with an upper revolving structure, that is, a body, which is rotatably supported on a lower traveling structure. A handrail for an operator to move up and down is attached to a machine body in which a cab, an engine, a fuel tank, a storage box (tool box), a work machine, and the like are mounted. A typical example of a handrail is a pipe member, one end of which is detachably attached to the upper part of a fuel tank arranged on one side of the fuselage by a bolt, and the other end of which is similar to the fuel tank. The storage box arranged on one side may be detachably attached to the front part by a bolt. The handrail is bent and formed into a substantially U shape as a whole.
【０００３】[0003]
【発明が解決しようとする課題】前記従来のハンドレー
ルは、一本のパイプ部材からなると共にその両端が機体
に対しリジッドに固定されている。この構成において
は、ハンドレールの高さが比較的低い場合、したがって
その全長が比較的短い場合には格別の問題は生じない。
しかしながら、ハンドレールの高さは必要に応じて相当
高くしなければならない場合があり、ハンドレールの全
長もそれに応じて増加する。その場合、ハンドレールが
前記構成であると、機械の稼働による振動の影響は、高
さの低いものに比較して当然大きくなる。これを回避す
るためには、パイプ部材の肉厚あるいは径を増加させ
る、補強部材（梁部材）を新たに設ける、等の手段があ
るが、何れも全体の重量が増加するため、ハンドレール
本体部分のみならず、ハンドレールの機体への取付部の
剛性をも相当に強化せざるを得なかった。その結果、改
造費用が大幅に増加することとなり、改善が要望されて
いた。The conventional handrail comprises a single pipe member, and both ends thereof are rigidly fixed to the machine body. In this configuration, if the handrail has a relatively low height, and thus has a relatively short overall length, no particular problem occurs.
However, the height of the handrail may have to be considerably higher if necessary, and the total length of the handrail will increase accordingly. In that case, if the handrail has the above-described configuration, the influence of vibration due to the operation of the machine is naturally greater than that of a machine having a low height. In order to avoid this, there are means such as increasing the wall thickness or diameter of the pipe member, newly providing a reinforcing member (beam member), etc. However, all of them increase the weight of the handrail body. Not only the parts but also the rigidity of the attachment part of the handrail to the airframe had to be considerably strengthened. As a result, the remodeling cost will increase significantly, and improvements have been demanded.
【０００４】本発明は前記事実に基づいてなされたもの
で、その目的は、きわめて簡単な構成により振動を緩衝
することができ、その結果、改造費用を節減することが
できる、新規な建設機械のハンドレールを提供すること
である。The present invention has been made on the basis of the above facts, and its object is to provide a new construction machine capable of damping vibrations with a very simple structure and consequently reducing the cost of modification. To provide a handrail.
【０００５】[0005]
【課題を解決するための手段】前記目的を達成するた
め、本発明によれば、一端部が機体に取り付けられる第
１のパイプ部材と、一端部が該機体に取り付けられ他端
部が該第１のパイプ部材の他端部内に円筒状の緩衝部材
を介して挿入された第２のパイプ部材と、該第１のパイ
プ部材にその半径方向に離脱自在に装着される少なくと
も１個の連結ピン部材とを含み、該第１のパイプ部材、
該緩衝部材及び該第２のパイプ部材にはそれぞれ該連結
ピン部材の軸線に整合する少なくとも１個の連結孔が形
成され、該連結ピン部材は該連結孔の各々を貫通するよ
う装着される、ことを特徴とする建設機械のハンドレー
ル、が提供される。In order to achieve the above object, according to the present invention, there is provided a first pipe member having one end attached to an airframe, and one end attached to the airframe and the other end having the first pipe member. A second pipe member inserted into the other end of the first pipe member via a cylindrical cushioning member; and at least one connecting pin removably attached to the first pipe member in the radial direction thereof. And a first pipe member,
Each of the buffer member and the second pipe member is formed with at least one connecting hole aligned with an axis of the connecting pin member, and the connecting pin member is mounted so as to penetrate each of the connecting holes. A handrail for a construction machine, which is characterized by the above.
【０００６】本発明による建設機械のハンドレールは、
第１のパイプ部材と第２のパイプ部材とによる２分割構
造をなしている。両パイプ部材の一端部は機体に取り付
けられ、両パイプ部材の他端部は、第２のパイプ部材の
他端部が第１のパイプ部材の他端部内に円筒状の緩衝部
材を介して挿入される形態で接続される。なお、前記構
成から、第２のパイプ部材は、第１のパイプ部材より小
径であると共に、実施にあたっては、当然、ハンドレー
ルの全長の多くを占める長さとなる。第１のパイプ部材
及び第２のパイプ部材の各一端部を介して機体から伝達
される振動は、パイプ部材の各々の他端部間に介在され
た緩衝部材により効果的に減衰・緩和されるので、ハン
ドレールは全体として振動に強い構造となる。このため
ハンドレールの高さを相当高くし、ハンドレールの全長
が増加したとしても、ハンドレールの全長のほとんどを
占める第２のパイプ部材としては、これを従来と同じ肉
厚及び径を有するパイプ部材を使用することも可能であ
る。また第２のパイプ部材の肉厚や径を増加させる必要
があるとしても、その増加は従来に比較して僅かで済
む。更に、補強部材を新たに設ける必要もない。その結
果、本発明においては、ハンドレールの高さを相当高く
した場合においても、ハンドレール全体の重量の増加は
比較的少なくて済み、ハンドレールのみならず、ハンド
レールの機体への取付部の剛性の強化も少ないので、簡
単な構成でありながら改造費用を節減することができ
る、との基本的作用効果が達成される。The handrail of the construction machine according to the present invention is
The first pipe member and the second pipe member form a two-part structure. One end of each of the pipe members is attached to the airframe, and the other end of each of the pipe members is the other end of the second pipe member inserted into the other end of the first pipe member via a cylindrical cushioning member. Are connected in the form described. From the above configuration, the second pipe member has a diameter smaller than that of the first pipe member, and naturally becomes a length that occupies most of the total length of the handrail in implementation. Vibrations transmitted from the airframe through the respective one ends of the first pipe member and the second pipe member are effectively damped / relaxed by the buffer member interposed between the other ends of the pipe members. Therefore, the handrail has a structure that is strong against vibration as a whole. For this reason, even if the height of the handrail is considerably increased and the total length of the handrail is increased, the second pipe member occupying most of the entire length of the handrail is a pipe having the same wall thickness and diameter as the conventional pipe member. It is also possible to use members. Further, even if it is necessary to increase the wall thickness and the diameter of the second pipe member, the increase will be small compared to the conventional case. Furthermore, it is not necessary to additionally provide a reinforcing member. As a result, in the present invention, even when the height of the handrail is made considerably high, the increase in the weight of the entire handrail is relatively small, and not only the handrail but also the mounting portion of the handrail to the machine body Since the rigidity is not increased so much, it is possible to reduce the cost of remodeling while having a simple structure, thereby achieving the basic effect.
【０００７】連結ピン部材は、第１のパイプ部材と第２
のパイプ部材の相対回転及び相互の抜けを防止する。第
１のパイプ部材と第２のパイプ部材とのガタは、それら
と緩衝部材との間の締め代、緩衝部材の材料を適宜選定
することにより防止することができる。以上の作用によ
り、ハンドレールが２分割された構成を有するにもかか
わらず、全体として一体的に所望の剛性を確保すること
ができる。なお緩衝部材の材料としては、合成ゴム、弾
性を有する合成樹脂、例えばナイロン等が好適である。The connecting pin member includes a first pipe member and a second pipe member.
The relative rotation of the pipe members and the mutual removal of the pipe members are prevented. Rattling between the first pipe member and the second pipe member can be prevented by appropriately selecting the interference between the first pipe member and the second pipe member and the buffer member and the material of the buffer member. With the above operation, the desired rigidity can be integrally secured as a whole as a whole even though the handrail has a configuration in which it is divided into two. As a material of the buffer member, synthetic rubber, synthetic resin having elasticity such as nylon is suitable.
【０００８】本発明によれば、更に、一端部が機体に取
り付けられる第１のパイプ部材と、一端部が該機体に取
り付けられ他端部が該第１のパイプ部材の該他端部内に
円筒状の緩衝部材を介して挿入された第２のパイプ部材
と、該第１のパイプ部材にその半径方向に離脱自在に装
着される連結ピン部材とを含み、該第２のパイプ部材の
該他端部はその外周面の径がその先端に向かうに従って
細くなる円錐形状部を規定し、該第１のパイプ部材、該
緩衝部材及び該第２のパイプ部材にはそれぞれ該連結ピ
ン部材の軸線と整合する連結孔対が形成され、該連結ピ
ン部材は該連結孔対の各々を貫通するよう装着される、
ことを特徴とする建設機械のハンドレール、が提供され
る。According to the invention, there is further provided a first pipe member having one end attached to the airframe, and a cylinder having one end attached to the airframe and the other end in the other end of the first pipe member. A second pipe member that is inserted via a shock-absorbing member, and a connecting pin member that is removably attached to the first pipe member in the radial direction thereof, and the other of the second pipe member. The end portion defines a conical portion in which the diameter of the outer peripheral surface becomes smaller toward the tip thereof, and the first pipe member, the buffer member, and the second pipe member respectively have an axis line of the connecting pin member. Aligned pairs of connecting holes are formed and the connecting pin members are mounted to extend through each of the pairs of connecting holes.
A handrail for a construction machine, which is characterized by the above.
【０００９】この発明においては、第２のパイプ部材の
他端部はその外周面の径がその先端に向かうに従って細
くなる円錐形状部を規定しているので、円筒状の緩衝部
材の内周面に比較的強い締め代をもって楔状に圧入され
る。その結果、第１のパイプ部材と第２のパイプ部材と
のガタを、格別の部材を用いることなく著しく効果的に
防止することができる。もちろん、この発明において
も、先に述べた基本的作用効果を達成できることはいう
までもない。In the present invention, since the other end of the second pipe member defines a conical portion in which the diameter of the outer peripheral surface becomes smaller toward the tip thereof, the inner peripheral surface of the cylindrical cushioning member is defined. It is pressed into a wedge shape with a relatively strong interference. As a result, the backlash between the first pipe member and the second pipe member can be remarkably effectively prevented without using a special member. Of course, in the present invention as well, it is needless to say that the basic operational effects described above can be achieved.
【００１０】[0010]
【発明の実施の形態】以下、図１〜図５を参照して、本
発明に従って構成された建設機械のハンドレールの実施
の形態について説明する。なお、図１〜図５において同
一部分は同一符号で示してある。先ず図１及び図２を参
照して、２は油圧ショベル、４は下部走行体、６は上部
旋回体、すなわち機体であって、下部走行体４上に旋回
自在に支持されている。８はキャブ、１０はエンジン、
１２は燃料タンク、１４はストレージボックス、１６は
作業機であって、それぞれ機体６上に搭載されている。
２０はハンドレールであって、第１のパイプ部材３０と
第２のパイプ部材４０とを含んでいる。第１のパイプ部
材３０の一端部は燃料タンク１２の上部にボルトにより
離脱自在に取り付けられ、第２のパイプ部材４０の一端
部はストレージボックス１４の前部にボルトにより離脱
自在に取り付けられている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a handrail for a construction machine constructed according to the present invention will be described below with reference to FIGS. 1 to 5, the same parts are designated by the same reference numerals. First, referring to FIG. 1 and FIG. 2, 2 is a hydraulic excavator, 4 is a lower traveling body, and 6 is an upper revolving body, that is, a machine body, which is rotatably supported on the lower traveling body 4. 8 is a cab, 10 is an engine,
12 is a fuel tank, 14 is a storage box, and 16 is a working machine, which are mounted on the machine body 6, respectively.
A handrail 20 includes a first pipe member 30 and a second pipe member 40. One end of the first pipe member 30 is detachably attached to the upper portion of the fuel tank 12 with a bolt, and one end of the second pipe member 40 is detachably attached to the front part of the storage box 14 with a bolt. .
【００１１】図２及び図３を参照して、ハンドレール２
０について更に詳細に説明する。第２のパイプ部材４０
は、その径が第１のパイプ部材３０より小さく、全体と
して略Ｕ形に折り曲げ成形されてなる。図２に示されて
いるように、第２のパイプ部材４０は第１のパイプ部材
３０より長く、ハンドレール２０の全長の多くを占める
長さに規定されている。Referring to FIGS. 2 and 3, the handrail 2
0 will be described in more detail. Second pipe member 40
Has a diameter smaller than that of the first pipe member 30, and is formed by bending into a substantially U shape as a whole. As shown in FIG. 2, the second pipe member 40 is longer than the first pipe member 30 and is defined to have a length occupying most of the entire length of the handrail 20.
【００１２】第１のパイプ部材３０は直線状をなし、そ
の一端部（下端部）には環状の取付フランジ３２が固定
されている。取付フランジ３２には複数個の取付孔３２
ａが形成されている。第１のパイプ部材３０の他端部
（上端部）の外周部には、軸方向に間隔を置いて二つの
ボス３４が固定されている。各ボス３４には雌ねじ３６
が形成された貫通孔が設けられている。雌ねじ３６の軸
線は、第１のパイプ部材３０の軸線に直交する方向、す
なわち半径方向に延びるよう規定されている。第１のパ
イプ部材３０には、各ボス３４の雌ねじ３６の軸線と整
合する連結孔３８が形成されている。第１のパイプ部材
３０の他端部内には、第２のパイプ部材４０が、円筒状
の緩衝部材５０を介して挿入されている。緩衝部材５０
の上端には環状フランジが形成され、このフランジの下
面は第１のパイプ部材３０の上端面に当接されている。The first pipe member 30 has a linear shape, and an annular mounting flange 32 is fixed to one end (lower end) thereof. The mounting flange 32 has a plurality of mounting holes 32.
a is formed. Two bosses 34 are fixed to the outer peripheral portion of the other end portion (upper end portion) of the first pipe member 30 at intervals in the axial direction. Female screw 36 on each boss 34
Is provided with a through hole. The axis of the internal thread 36 is defined to extend in a direction orthogonal to the axis of the first pipe member 30, that is, in the radial direction. The first pipe member 30 is formed with a connection hole 38 that is aligned with the axis of the female screw 36 of each boss 34. The second pipe member 40 is inserted into the other end of the first pipe member 30 via a cylindrical cushioning member 50. Cushioning member 50
An annular flange is formed at the upper end of the flange, and the lower surface of this flange is in contact with the upper end surface of the first pipe member 30.
【００１３】第１のパイプ部材３０の内周面の一部分、
具体的にはボス３４が固定されている領域とこれに対応
する緩衝部材５０の外周面の一部分との間には円弧状の
板部材６０が介在されている。板部材６０はこの実施の
形態では、平面が略矩形で断面が円弧状をなす鋼板から
なる。板部材６０、緩衝部材５０及び第２のパイプ部材
４０には、各ボス３４の雌ねじ３６の軸線と整合する連
結孔６２、５２及び４２がそれぞれ形成されている。A portion of the inner peripheral surface of the first pipe member 30,
Specifically, an arc-shaped plate member 60 is interposed between a region where the boss 34 is fixed and a part of the outer peripheral surface of the buffer member 50 corresponding to the region. In this embodiment, the plate member 60 is made of a steel plate whose plane is substantially rectangular and whose cross section is arcuate. The plate member 60, the cushioning member 50, and the second pipe member 40 are formed with connecting holes 62, 52, and 42 that are aligned with the axis of the female screw 36 of each boss 34.
【００１４】７０は連結ピン部材を構成するボルトであ
って、各ボス３４にそれぞれねじ係合される。すなわ
ち、各ボルト７０は、対応するボス３４の雌ねじ３６に
係合される雄ねじが形成された大径部７２と、大径部７
２の先端に形成された小径部７４と、大径部７２及び小
径部７４間に形成された環状の段部７６とを有してい
る。第１のパイプ部材３０に形成された各連結孔３８
は、対応するボルト７０の大径部７２を受け入れる大径
を有し、板部材６０、緩衝部材５０及び第２のパイプ部
材４０に形成された各連結孔６２、５２及び４２は小径
部７４を受け入れる小径を有している。したがって、各
ボルト７０を対応するボス３４の雌ねじ３６に係合させ
て締め付けると、各ボルト７０は第１のパイプ部材３０
の半径方向内方（図３の右方）へ移動する。この移動に
より段部７６が板部材６０を同方向へ押圧する。これに
より、第１のパイプ部材３０と第２のパイプ部材４０の
相互のガタが防止され、機体６からの振動を緩和する。
各ボルト７０の小径部７４は、第２のパイプ部材４０の
対応する連結孔４２を貫通するよう装着されるので、第
２のパイプ部材４０の回転及び抜けは確実に防止され
る。板部材６０は、各ボルト７０の締付力を直接緩衝部
材５０に作用させないようにすると同時に、緩衝部材５
０の広い範囲に締付力を作用させる機能を有している。
したがって、ハンドレール２０の接続部の吸振性及び一
体性の両機能が効果的に確保される。なお８０はロック
ナットで、ボルト７０の同押圧状態を保持する。Reference numeral 70 denotes a bolt which constitutes a connecting pin member and is screwed into each boss 34. That is, each bolt 70 has a large-diameter portion 72 formed with a male screw that engages with the female screw 36 of the corresponding boss 34, and a large-diameter portion 7.
2 has a small diameter portion 74 formed at the tip and an annular step portion 76 formed between the large diameter portion 72 and the small diameter portion 74. Each connection hole 38 formed in the first pipe member 30.
Has a large diameter for receiving the large diameter portion 72 of the corresponding bolt 70, and the connecting holes 62, 52 and 42 formed in the plate member 60, the buffer member 50 and the second pipe member 40 have the small diameter portion 74. It has a small diameter to accept. Therefore, when each bolt 70 is engaged and tightened with the female thread 36 of the corresponding boss 34, each bolt 70 is locked by the first pipe member 30.
Inward in the radial direction (to the right in FIG. 3). By this movement, the stepped portion 76 presses the plate member 60 in the same direction. As a result, the backlash between the first pipe member 30 and the second pipe member 40 is prevented, and the vibration from the machine body 6 is alleviated.
Since the small diameter portion 74 of each bolt 70 is mounted so as to penetrate the corresponding connecting hole 42 of the second pipe member 40, rotation and removal of the second pipe member 40 are reliably prevented. The plate member 60 prevents the tightening force of each bolt 70 from directly acting on the cushioning member 50, and at the same time, the cushioning member 5
It has a function to apply a tightening force to a wide range of 0.
Therefore, both the function of absorbing the vibration and the function of integrating the handrail 20 are effectively ensured. A lock nut 80 holds the bolt 70 in the same pressed state.
【００１５】次に、図４を参照して本発明に従って構成
されたハンドレール２０の他の実施の形態について説明
する。第１のパイプ部材３０及び緩衝部材５０に形成さ
れた各連結孔３８及び５２は、対応するボルト７０の大
径部７２を受け入れる大径を有し、第２のパイプ部材４
０に形成された各連結孔４２は小径部７４を受け入れる
小径を有している。したがって、各ボルト７０を対応す
るボス３４の雌ねじ３６に係合させて締め付けると、各
ボルト７０は第１のパイプ部材３０の半径方向内方（図
４の右方）へ移動する。この移動により段部７６が第２
のパイプ部材４０を直接同方向へ押圧する。なお８２は
ボルト７０のゆるみ止めワッシャである。この実施の形
態においては、図３に示す実施の形態と同様な基本的作
用効果が得られる他、構成が更に簡略化され、したがっ
て更にコストは低減される。Next, another embodiment of the handrail 20 constructed according to the present invention will be described with reference to FIG. Each of the connecting holes 38 and 52 formed in the first pipe member 30 and the buffer member 50 has a large diameter for receiving the large diameter portion 72 of the corresponding bolt 70, and the second pipe member 4
Each of the connecting holes 42 formed in 0 has a small diameter for receiving the small diameter portion 74. Therefore, when each bolt 70 is engaged with the corresponding internal thread 36 of the boss 34 and tightened, each bolt 70 moves radially inward of the first pipe member 30 (rightward in FIG. 4). This movement causes the step 76 to move to the second position.
The pipe member 40 is directly pressed in the same direction. Reference numeral 82 is a washer for locking the bolt 70. In this embodiment, the same basic operational effect as that of the embodiment shown in FIG. 3 can be obtained, and the configuration is further simplified, so that the cost is further reduced.
【００１６】次に、図５を参照して本発明に従って構成
されたハンドレール２０の更に他の実施の形態について
説明する。第２のパイプ部材４０の他端部はその外周面
の径がその先端に向かうに従って細くなる円錐形状部４
４を規定している。この円錐形状部４４の部分は、別部
材を第２のパイプ部材４０の他端部の外周面に嵌合し、
固定することにより容易に形成できる。円錐形状部４４
は、緩衝部材５０の内周面に比較的強い締め代をもって
楔状に圧入される。第１のパイプ部材３０、緩衝部材５
０及び第２のパイプ部材４０にはそれぞれボルト７０の
軸線と整合する連結孔対３９、５３及び４３が形成され
ている。ボルト７０はロッド部分が同径である標準タイ
プの形状をなしており、連結孔対３９、５３及び４３の
各々を貫通するよう装着される。この実施の形態におい
ては、図３に示す実施の形態と同様な基本的作用効果が
得られる他、第１のパイプ部材３０と第２のパイプ部材
４０とのガタを、格別の部材を用いることなく著しく効
果的に防止することができる。Next, another embodiment of the handrail 20 constructed according to the present invention will be described with reference to FIG. The other end portion of the second pipe member 40 has a conical shape portion 4 in which the diameter of the outer peripheral surface thereof becomes smaller toward the tip thereof.
4 is specified. The conical portion 44 is formed by fitting another member to the outer peripheral surface of the other end of the second pipe member 40,
It can be easily formed by fixing. Conical portion 44
Are pressed into the inner peripheral surface of the cushioning member 50 in a wedge shape with a relatively strong interference. First pipe member 30, cushioning member 5
The 0 and second pipe members 40 are formed with connecting hole pairs 39, 53 and 43, respectively, which are aligned with the axis of the bolt 70. The bolt 70 has a standard type shape in which the rod portion has the same diameter, and is mounted so as to pass through each of the connecting hole pairs 39, 53 and 43. In this embodiment, the same basic operational effect as that of the embodiment shown in FIG. 3 is obtained, and in addition, the play between the first pipe member 30 and the second pipe member 40 is special. Can be prevented significantly effectively.
【００１７】以上、本発明による建設機械のハンドレー
ルの実施の形態について説明したが、本発明は前記実施
の形態に限定されるものではなく、本発明の範囲を逸脱
することなく種々の変形あるいは修正が可能である。例
えば、図３及び図４の実施の形態において、第１のパイ
プ部材３０と緩衝部材５０及び第２のパイプ部材４０と
緩衝部材５０との締め代を十分確実に設けることによ
り、連結ピン７０の段部７６を省略し、連結ピン７０及
び各連結孔の径を同径とすることも可能である。また前
記実施の形態において、第１のパイプ部材３０の一端は
燃料タンク１２に取り付けられ、第２のパイプ部材４０
の一端はストレージボックス１４に取り付けられている
が、必要に応じ、機体６の適宜の部位に取り付けられ
る。またハンドレール２０全体の形状も図示の形態に限
定される理由はない。ボルト７０は、少なくとも１個使
用することにより成立はするが、複数個設けることが実
用上は好ましい（図５の形態においては、実用上１個
で、その機能は十分である）。Although the embodiment of the handrail of the construction machine according to the present invention has been described above, the present invention is not limited to the above-mentioned embodiment, and various modifications or changes can be made without departing from the scope of the present invention. It can be modified. For example, in the embodiment of FIGS. 3 and 4, the tightening margins of the first pipe member 30 and the cushioning member 50 and the second pipe member 40 and the cushioning member 50 are provided with sufficient certainty so that the connecting pin 70 is secured. It is also possible to omit the stepped portion 76 and make the connecting pin 70 and each connecting hole have the same diameter. Further, in the above-described embodiment, one end of the first pipe member 30 is attached to the fuel tank 12, and the second pipe member 40 is attached.
Although one end of is attached to the storage box 14, it is attached to an appropriate portion of the machine body 6 as needed. Further, there is no reason why the shape of the entire handrail 20 is limited to the illustrated form. The bolt 70 is established by using at least one bolt, but it is practically preferable to provide a plurality of bolts 70 (in the form of FIG. 5, one bolt is practically one and its function is sufficient).
【００１８】[0018]
【発明の効果】本発明に従って構成された建設機械のハ
ンドレールによれば、ハンドレールの高さを相当高くし
た場合においても、ハンドレール全体の重量の増加は比
較的少なくて済み、ハンドレールのみならず、ハンドレ
ールの機体への取付部の剛性の強化も少ないので、簡単
な構成でありながら改造費用を節減することができる。According to the handrail of the construction machine constructed according to the present invention, even if the height of the handrail is considerably increased, the weight increase of the entire handrail is relatively small, and only the handrail is used. Moreover, since the rigidity of the mounting portion of the handrail to the machine body is small, the modification cost can be reduced even though the structure is simple.
【図１】図１は、本発明に従って構成されたハンドレー
ルの一つの実施の形態を備えた油圧ショベルの斜視概略
図。FIG. 1 is a schematic perspective view of a hydraulic excavator provided with an embodiment of a handrail constructed according to the present invention.
【図２】図１に示す油圧ショベルにおいて、ハンドレー
ル装着部を示す側面概略図。FIG. 2 is a schematic side view showing a handrail mounting portion in the hydraulic excavator shown in FIG.
【図３】図２のＡ部の一部断面図。FIG. 3 is a partial cross-sectional view of part A of FIG.
【図４】本発明に従って構成されたハンドレールの他の
実施の形態を示す図であって、図２のＡ部に相当する一
部断面図。FIG. 4 is a view showing another embodiment of the handrail constructed according to the present invention, and is a partial cross-sectional view corresponding to part A of FIG. 2;
【図５】本発明に従って構成されたハンドレールの他の
実施の形態を示す図であって、図２のＡ部に相当する一
部断面図。FIG. 5 is a view showing another embodiment of the handrail constructed according to the present invention and is a partial cross-sectional view corresponding to a portion A in FIG. 2;
２ 油圧ショベル ６ 機体 １２ 燃料タンク １４ ストレージボックス ２０ ハンドレール ３０ 第１のパイプ部材 ３４ ボス ３８、４２、５２及び６２ 連結孔 ３９、４３及び５３ 連結孔対 ４０ 第２のパイプ部材 ４４ 円錐形状部 ５０ 緩衝部材 ６０ 板部材 ７０ ボルト（連結ピン部材） ７４ 段部 2 hydraulic excavator 6 airframe 12 fuel tank 14 storage box 20 handrail 30 first pipe member 34 bosses 38, 42, 52 and 62 connecting holes 39, 43 and 53 connecting hole pair 40 second pipe member 44 conical portion 50 Buffer member 60 Plate member 70 Bolt (connecting pin member) 74 Step
───────────────────────────────────────────────────── フロントページの続き (72)発明者 松田 誉 東京都世田谷区用賀四丁目10番１号 新キ ャタピラー三菱株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takashi Matsuda 4-10-1 Yoga, Setagaya-ku, Tokyo New Caterpillar Mitsubishi Corporation
Claims (4)
イプ部材と、一端部が該機体に取り付けられ他端部が該
第１のパイプ部材の他端部内に円筒状の緩衝部材を介し
て挿入された第２のパイプ部材と、該第１のパイプ部材
にその半径方向に離脱自在に装着される少なくとも１個
の連結ピン部材とを含み、 該第１のパイプ部材、該緩衝部材及び該第２のパイプ部
材にはそれぞれ該連結ピン部材の軸線に整合する少なく
とも１個の連結孔が形成され、該連結ピン部材は該連結
孔の各々を貫通するよう装着される、ことを特徴とする
建設機械のハンドレール。1. A first pipe member, one end of which is attached to a fuselage, and one end of which is attached to the fuselage, and the other end of which is a cylindrical buffer member in the other end of the first pipe member. A second pipe member that is inserted, and at least one connecting pin member that is removably attached to the first pipe member in the radial direction thereof; Each of the second pipe members is formed with at least one connecting hole aligned with the axis of the connecting pin member, and the connecting pin member is mounted so as to penetrate each of the connecting holes. Handrail of construction machinery.
これに対応する該緩衝部材の外周面の一部分との間には
断面が円弧状の板部材が介在され、該板部材には該連結
ピン部材の軸線に整合する連結孔が形成され、 該第１のパイプ部材の外周面には、該連結ピン部材の軸
線に整合する雌ねじが形成されたボスが設けられ、 該連結ピン部材は、該ボスの該雌ねじに係合される雄ね
じが形成された大径部と、該大径部の先端に形成された
小径部と、該大径部及び小径部間に形成された段部とを
有し、 該第１のパイプ部材に形成された該連結孔は該大径部を
受け入れる大径を有し、該板部材、該緩衝部材及び該第
２のパイプ部材に形成された該連結孔の各々は該小径部
を受け入れる小径を有し、該連結ピン部材の該第１のパ
イプ部材に対する半径方向内方への移動により該段部が
該板部材を同方向へ押圧する、請求項１記載の建設機械
のハンドレール。2. A plate member having an arcuate cross section is interposed between a part of an inner peripheral surface of the first pipe member and a part of a corresponding outer peripheral surface of the cushioning member, and the plate member has a circular arc section. Is formed with a connecting hole aligned with the axis of the connecting pin member, and a boss formed with an internal thread aligned with the axis of the connecting pin member is provided on the outer peripheral surface of the first pipe member. The member has a large-diameter portion formed with a male screw that engages with the female screw of the boss, a small-diameter portion formed at the tip of the large-diameter portion, and a step formed between the large-diameter portion and the small-diameter portion. And a connecting hole formed in the first pipe member has a large diameter for receiving the large diameter portion, and is formed in the plate member, the cushioning member, and the second pipe member. Each of the connecting holes has a small diameter for receiving the small diameter portion, and a radial direction of the connecting pin member with respect to the first pipe member. The handrail for a construction machine according to claim 1, wherein the step portion presses the plate member in the same direction by moving inward.
じが形成されたボスが設けられ、 該連結ピン部材は、該ボスの該雌ねじに係合される雄ね
じが形成された大径部と、該大径部の先端に形成された
小径部と、該大径部及び小径部間に形成された段部とを
有し、 該第１のパイプ部材及び該緩衝部材に形成された該連結
孔の各々は該大径部を受け入れる大径を有し、該第２の
パイプ部材に形成された該連結孔は該小径部を受け入れ
る小径を有し、該連結ピン部材の該第１のパイプ部材に
対する半径方向内方への移動により該段部が該第２のパ
イプ部材を同方向へ押圧する、請求項１記載の建設機械
のハンドレール。3. A boss formed with an internal thread is provided on an outer peripheral surface of the first pipe member, and the connecting pin member has a large diameter formed with an external thread to be engaged with the internal thread of the boss. A portion, a small diameter portion formed at the tip of the large diameter portion, and a step portion formed between the large diameter portion and the small diameter portion, and formed on the first pipe member and the cushioning member. Each of the connecting holes has a large diameter for receiving the large diameter portion, the connecting hole formed in the second pipe member has a small diameter for receiving the small diameter portion, and the connecting pin member has the first diameter. 2. The handrail for a construction machine according to claim 1, wherein the step portion presses the second pipe member in the same direction by the inward movement of the second pipe member with respect to the pipe member.
イプ部材と、一端部が該機体に取り付けられ他端部が該
第１のパイプ部材の該他端部内に円筒状の緩衝部材を介
して挿入された第２のパイプ部材と、該第１のパイプ部
材にその半径方向に離脱自在に装着される連結ピン部材
とを含み、 該第２のパイプ部材の該他端部はその外周面の径がその
先端に向かうに従って細くなる円錐形状部を規定し、 該第１のパイプ部材、該緩衝部材及び該第２のパイプ部
材にはそれぞれ該連結ピン部材の軸線と整合する連結孔
対が形成され、該連結ピン部材は該連結孔対の各々を貫
通するよう装着される、ことを特徴とする建設機械のハ
ンドレール。4. A first pipe member having one end attached to the airframe, and a cylindrical cushioning member in the other end of the first pipe member having one end attached to the airframe and the other end. A second pipe member inserted into the first pipe member and a connecting pin member removably attached to the first pipe member in the radial direction thereof, and the other end portion of the second pipe member has an outer peripheral surface thereof. Defining a conical portion whose diameter becomes smaller toward the tip thereof, and the first pipe member, the buffer member and the second pipe member each have a pair of connecting holes aligned with the axis of the connecting pin member. A handrail for a construction machine, wherein the connecting pin member is formed so that the connecting pin member is mounted so as to penetrate through each of the connecting hole pairs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28542095A JP2917001B2 (en) | 1995-11-02 | 1995-11-02 | Construction equipment handrail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28542095A JP2917001B2 (en) | 1995-11-02 | 1995-11-02 | Construction equipment handrail |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09125459A true JPH09125459A (en) | 1997-05-13 |
| JP2917001B2 JP2917001B2 (en) | 1999-07-12 |
Family
ID=17691296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28542095A Expired - Fee Related JP2917001B2 (en) | 1995-11-02 | 1995-11-02 | Construction equipment handrail |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2917001B2 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006183415A (en) * | 2004-12-28 | 2006-07-13 | Shin Caterpillar Mitsubishi Ltd | Handrail device |
| KR100861562B1 (en) * | 2006-11-24 | 2008-10-02 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | Folder type handrail for construction equipment |
| JP2010077607A (en) * | 2008-09-24 | 2010-04-08 | Hitachi Constr Mach Co Ltd | Handrail of construction machinery |
| JP2011241644A (en) * | 2010-05-20 | 2011-12-01 | Hitachi Constr Mach Co Ltd | Mounting structure of safety fence of work machine |
| JP2015021232A (en) * | 2013-07-16 | 2015-02-02 | 日本車輌製造株式会社 | Construction machine with attachable/detachable handrail |
| JP2016132975A (en) * | 2015-01-22 | 2016-07-25 | 住友建機株式会社 | Shovel |
| JP2016135975A (en) * | 2015-01-23 | 2016-07-28 | 住友建機株式会社 | Shovel |
| JP2020060009A (en) * | 2018-10-09 | 2020-04-16 | キャタピラー エス エー アール エル | Pipe member |
| WO2022214812A1 (en) * | 2021-04-09 | 2022-10-13 | Icl Tech Limited | Handrail assembly for a work machine |
-
1995
- 1995-11-02 JP JP28542095A patent/JP2917001B2/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006183415A (en) * | 2004-12-28 | 2006-07-13 | Shin Caterpillar Mitsubishi Ltd | Handrail device |
| JP4587212B2 (en) * | 2004-12-28 | 2010-11-24 | キャタピラー エス エー アール エル | Handrail device |
| KR100861562B1 (en) * | 2006-11-24 | 2008-10-02 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | Folder type handrail for construction equipment |
| JP2010077607A (en) * | 2008-09-24 | 2010-04-08 | Hitachi Constr Mach Co Ltd | Handrail of construction machinery |
| JP2011241644A (en) * | 2010-05-20 | 2011-12-01 | Hitachi Constr Mach Co Ltd | Mounting structure of safety fence of work machine |
| JP2015021232A (en) * | 2013-07-16 | 2015-02-02 | 日本車輌製造株式会社 | Construction machine with attachable/detachable handrail |
| JP2016132975A (en) * | 2015-01-22 | 2016-07-25 | 住友建機株式会社 | Shovel |
| JP2016135975A (en) * | 2015-01-23 | 2016-07-28 | 住友建機株式会社 | Shovel |
| JP2020060009A (en) * | 2018-10-09 | 2020-04-16 | キャタピラー エス エー アール エル | Pipe member |
| WO2022214812A1 (en) * | 2021-04-09 | 2022-10-13 | Icl Tech Limited | Handrail assembly for a work machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2917001B2 (en) | 1999-07-12 |
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