JP2005343622A

JP2005343622A - Work bench mounting structure of vehicle for high lift work

Info

Publication number: JP2005343622A
Application number: JP2004164394A
Authority: JP
Inventors: Tsutomu Hojo; 努北條
Original assignee: Aichi Corp
Current assignee: Aichi Corp
Priority date: 2004-06-02
Filing date: 2004-06-02
Publication date: 2005-12-15

Abstract

<P>PROBLEM TO BE SOLVED: To provide a work bench mounting structure of a vehicle for high lift work capable of simplifying a structure and reducing weight while ensuring strength and suppressing increase of a manufacturing cost using parts in common. <P>SOLUTION: This work bench mounting structure of the vehicle for high lift work is composed of a boom 6 attached to a vehicle body 2 at least in rising and falling-down manner, a vertical post 9 connected pivotally with a tip part of the boom 6 so as to swing in the vertical direction and control swing in accordance with rising and falling-down of the boom 6 and extending substantially vertically and upward and positioned irrespective of a rising and falling-down angle of the boom 6, and a work bench 10 attached to the vertical post 9 within a horizontal face so as to oscillate and is provided with a supporting bracket 31 attached to a tip part of the vertical post 9 within a horizontal face so as to oscillate, a horizontal member 32 fixed to the supporting bracket 31 and extending substantially horizontally along the direction of width of the supporting bracket 31, a pair of base members 33, 33 fixed to left and right sides of a side face 10 of the work bench and extending vertically, and a pair of left and right side plate members 34, 34 extending toward the base members 33, 33 from both left and right ends of the horizontal member 32. The horizontal member 32 is constituted by a round pipe member. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、高所作業車の作業台取付構造に関し、更に詳細には、車体上に起伏動等可能に設けられたブームの先端部に枢結されて常に略鉛直上方に延びて位置する垂直ポストに、水平面内で首振り動可能に取り付けられた作業台の取付構造に関する。 The present invention relates to a work platform mounting structure for an aerial work vehicle. More specifically, the present invention relates to a vertical position that is pivotally connected to a tip end portion of a boom provided on a vehicle body so as to be able to move up and down and always extends substantially vertically upward. The present invention relates to a worktable mounting structure that is attached to a post so as to be able to swing in a horizontal plane.

高所作業を行う高所作業車として、例えば、車体に少なくとも起伏動可能に取り付けられたブームと、ブームの先端部に上下方向に揺動可能に枢結されて該ブームの起伏動に応じて揺動制御されてブームの起伏角度の如何に拘わらず略鉛直上方に延びて位置する垂直ポストと、垂直ポストに水平面内で首振り動可能に取り付けられた作業台とを備えて構成されるものがある。 As an aerial work vehicle that performs high-altitude work, for example, a boom that is attached to the vehicle body so as to be able to move up and down at least, and is pivotally connected to the tip of the boom so as to be able to swing in the vertical direction. Consists of a vertical post that is swing-controlled and extends substantially vertically upward regardless of the boom angle, and a workbench that is attached to the vertical post so that it can swing in a horizontal plane. There is.

上記のような構成の高所作業車における作業台の取付構造として、例えば、垂直ポストの先端部に水平面内で首振り動可能に取り付けられた支持ブラケット（例えば、特許文献１に記載の支持部材６）と、支持ブラケットに固着されて略水平方向に延びる角パイプ部材（例えば、特許文献１に記載の垂直ブラケット１１）と、作業台の側面の左右に固着されて上下に延びる一対のベース部材（例えば、特許文献１に記載のガイドレール１２）とを備え、角パイプ部材は一対のベース部材間を固着連結して構成されるものがある（例えば、特許文献１を参照）。
実登２５０８３９１号公報 As a worktable mounting structure in an aerial work vehicle having the above-described configuration, for example, a support bracket (for example, a support member described in Patent Document 1) attached to the tip of a vertical post so as to be able to swing in a horizontal plane. 6), a square pipe member (for example, the vertical bracket 11 described in Patent Document 1) that is fixed to the support bracket and extends in a substantially horizontal direction, and a pair of base members that are fixed to the left and right sides of the work table and extend up and down. (For example, a guide rail 12 described in Patent Document 1), and a square pipe member is configured by firmly connecting a pair of base members (see, for example, Patent Document 1).
Noto 2508391

ところが、上記文献に記載されているように、作業台の取付構造を角材や折り板（例えば、支持ブラケット）の組み合わせで構成すると、接合角部などに応力集中が発生する。このため、強度確保のために、ガセットやパッチといった補強材を該当部位に取り付けたり、高強度な材料や厚みのある材料を使用したりせねばならず、これに伴い該構造の複雑化、重量化、あるいは高コスト化を招くおそれがあった。 However, as described in the above document, when the worktable mounting structure is composed of a combination of square bars and folded plates (for example, support brackets), stress concentration occurs at the joint corners and the like. For this reason, in order to secure the strength, it is necessary to attach a reinforcing material such as a gusset or patch to the corresponding part, or to use a high-strength material or a thick material. There is a risk of increasing cost or cost.

また、上記のような作業台の取付構造は、ブームの長さや多関節アームの有無など、機種の仕様に応じて設計されていることが多いため、機種毎に新たな専用部品の設計・製造が必要となり、部品の共通化が図れず、製造コストを上げるという問題があった。 In addition, the worktable mounting structure as described above is often designed according to the specifications of the model, such as the length of the boom and the presence or absence of articulated arms, so new dedicated parts are designed and manufactured for each model. There is a problem that the parts cannot be shared and the manufacturing cost is increased.

本発明は、このような問題に鑑みてなされたものであり、強度を確保しつつ構造の簡素化・軽量化を図ることが可能であるとともに、部品の共通化を図って製造コストの増加を抑制することが可能な高所作業車の作業台取付構造を提供することを目的とする。 The present invention has been made in view of such a problem, and it is possible to simplify the structure and reduce the weight while securing the strength, and to increase the manufacturing cost by using common parts. An object is to provide a work platform mounting structure for an aerial work vehicle that can be suppressed.

上記の目的を達成するため、本発明は、車体に少なくとも起伏動可能に取り付けられたブームと、前記ブームの先端部に上下方向に揺動可能に枢結されて前記ブームの起伏動に応じて揺動制御されて前記ブームの起伏角度の如何に拘わらず略鉛直上方に延びて位置する垂直ポストと、前記垂直ポストに水平面内で首振り動可能に取り付けられた作業台とからなり、前記垂直ポストの先端部に水平面内で首振り動可能に取り付けられた支持ブラケットと、前記支持ブラケットに固着され、前記支持ブラケットの幅方向に沿って略水平に延びる水平部材と、前記作業台の側面の左右に固着され、上下に延びる一対のベース部材と、前記水平部材の左右両端から前記ベース部材に向かって延びた左右一対の側板部材とを備えた高所作業車の作業台取付構造において、前記水平部材を丸パイプ部材により構成している。 In order to achieve the above-described object, the present invention provides a boom that is attached to a vehicle body so as to be able to move up and down at least, and is pivotally coupled to the tip of the boom so as to be able to swing in the vertical direction. The vertical post that is controlled to swing and extends substantially vertically upward regardless of the boom undulation angle, and a workbench that is swingably mounted on the vertical post in a horizontal plane. A support bracket attached to the front end of the post so as to be able to swing in a horizontal plane; a horizontal member fixed to the support bracket and extending substantially horizontally along a width direction of the support bracket; and a side surface of the work table. A work platform for an aerial work platform comprising a pair of base members fixed to the left and right and extending vertically and a pair of left and right side plate members extending from left and right ends of the horizontal member toward the base member In the structure, and the horizontal member is constituted by a round pipe member.

なお、前記作業台の首振り動を行わせる首振り作動モータ等への油圧の供給を制御する上部操作バルブと、前記上部操作バルブに前記ブームの基端側から作動油の給排を行う油圧ホースとを備え、前記油圧ホースは、前記ブームの基端側から前記ブームに沿って延びて、丸パイプ部材により構成された前記水平部材に巻き掛けられ、前記水平部材と前記側板部材とで構成される空間内を通り、前記上部操作バルブに繋がって配設されるように構成してもよい。 An upper operation valve that controls supply of hydraulic pressure to a swing operation motor that swings the work table, and hydraulic pressure that supplies and discharges hydraulic oil to and from the base end side of the boom. The hydraulic hose extends from the base end side of the boom along the boom, is wound around the horizontal member formed by a round pipe member, and includes the horizontal member and the side plate member. It may be configured so as to pass through the space to be connected to the upper operation valve.

但し、水平部材に巻き掛けるのは、前記油圧ホースだけではなく、例えば、信号線路等も含んでもよい。 However, not only the hydraulic hose but also a signal line or the like may be included around the horizontal member.

このような構成によれば、本発明は、機種毎に側板部材だけを設計・製造し、支持ブラケット、水平部材（丸パイプ部材）及びベース部材は共通部品として利用することができ、以下の本実施形態では、垂直ポストへのベース部材の取付角度が機種毎に設定されている所定角度を満足するように、支持ブラケットに丸パイプ部材からなる水平部材を取り付け、この水平部材から作業台に固着されているベース部材に向かって斜めに側板部材を取り付ければよい。このように、本発明は、側板部材を高所作業車の変更可能部品とし、支持ブラケット、水平部材（丸パイプ部材）及びベース部材を高所作業車の共通部品とすることで、機種の仕様が変更される場合でも、側板部材のみを新たに設計・製造すればよいため、部品の共通化が図れ、製造コストの上昇を抑制することができる。 According to such a configuration, the present invention designs and manufactures only the side plate member for each model, and the support bracket, the horizontal member (round pipe member) and the base member can be used as common parts. In the embodiment, a horizontal member made of a round pipe member is attached to the support bracket so that the mounting angle of the base member to the vertical post satisfies a predetermined angle set for each model, and the horizontal member is fixed to the work table. The side plate member may be attached obliquely toward the base member. Thus, the present invention makes it possible to change the specifications of the model by making the side plate member a changeable part for an aerial work vehicle, and making the support bracket, the horizontal member (round pipe member) and the base member a common part for the aerial work vehicle. Even when the change is made, only the side plate member needs to be newly designed and manufactured, so that the parts can be shared and the manufacturing cost can be prevented from increasing.

また、本発明は、水平部材を構成する部材に丸パイプ部材を使用することにより、該水平部材に取り付けられている部材、すなわち、支持ブラケットとの接合部及び側板部材との接合部に作用する応力をそれぞれ分散させている。また、側板部材を丸パイプ部材からなる水平部材の左右両端からベース部材に向かって斜めに配置することにより、ベース部材と側板部材との接合部に作用する応力を分散させている。このため、本発明は、強度を確保するための補強材や高強度材が不要となり、従来の構造と比べて、簡素・軽量且つ低コストな作業台の取付構造を実現することができる。 Moreover, this invention acts on the member attached to this horizontal member, ie, a junction part with a support bracket, and a junction part with a side plate member by using a round pipe member for the member which comprises a horizontal member. Each stress is dispersed. Moreover, the stress which acts on the junction part of a base member and a side plate member is disperse | distributed by arrange | positioning a side plate member diagonally toward the base member from the right and left both ends of the horizontal member which consists of a round pipe member. For this reason, the present invention does not require a reinforcing material or a high-strength material for ensuring strength, and can realize a worktable mounting structure that is simpler, lighter, and lower in cost than the conventional structure.

なお、前記作業台の首振り動を行わせる首振り作動モータ等への油圧の供給を制御する上部操作バルブと、前記ブームの起伏作動に応じて、前記上部操作バルブに前記ブームの基端側から作動油の給排を行う油圧ホースとを備え、前記油圧ホースは、前記ブームの基端側から前記ブームに沿って延びて、丸パイプ部材により構成された前記水平部材に巻き掛けられ、前記水平部材と前記側板部材とで構成される空間内を通り、前記上部操作バルブに繋がって配設されるように構成してもよい。 An upper operation valve that controls the supply of hydraulic pressure to a swing operation motor that swings the work table, and a base end side of the boom according to the boom raising / lowering operation. A hydraulic hose that supplies and discharges hydraulic oil from the base, and the hydraulic hose extends from the base end side of the boom along the boom and is wound around the horizontal member formed by a round pipe member, You may comprise so that it may pass through the space comprised by a horizontal member and the said side plate member, and it may be connected and connected with the said upper operation valve.

このような構成により、本発明は、油圧ホースを配設する際に、丸パイプ部材からなる水平部材自体を、油圧ホースを掛け回す際のホースガイドとして利用できる。その結果、本発明は、構成部品を減らすことが可能であり、構造の簡素化、軽量化及び低コスト化に貢献できる。 With such a configuration, the present invention can use the horizontal member itself made of a round pipe member as a hose guide when the hydraulic hose is hung when the hydraulic hose is disposed. As a result, the present invention can reduce the number of components, and can contribute to simplification, weight reduction, and cost reduction of the structure.

以下、図面を参照して本発明の好ましい実施形態について説明する。まず、本発明に係る高所作業車の作業台取付構造を有する高所作業車１について、図２を用いて説明する。この高所作業車１は、前後輪３ａ及び３ｂを有して走行可能であり、前部に運転キャビン２ａを有したトラック車両を有して構成される。車体２の前後左右の４ヵ所にアウトリガジャッキ４が設けられ、高所作業時には下方に伸長して車体２を持ち上げ支持する。 Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. First, an aerial work vehicle 1 having a work platform mounting structure for an aerial work vehicle according to the present invention will be described with reference to FIG. This aerial work vehicle 1 is capable of traveling with front and rear wheels 3a and 3b, and includes a truck vehicle having a driving cabin 2a at the front. Outrigger jacks 4 are provided at four locations on the front, rear, left and right of the vehicle body 2 and extend downward to support the vehicle body 2 when working at high places.

車体２の後方上に水平旋回動自在に旋回台５が配設され、この旋回台５は旋回モータ１５（油圧モータ）により旋回駆動される。旋回台５にはブーム６が枢結されて取り付けられている。ブーム６は、起伏シリンダ１６により起伏動される。また、ブーム６は、入れ子式に構成されており、内蔵の伸縮シリンダ１７により伸縮動される。 A swivel base 5 is disposed on the rear side of the vehicle body 2 so as to be able to swivel horizontally. The swivel base 5 is swiveled by a swivel motor 15 (hydraulic motor). A boom 6 is pivotally attached to the swivel base 5. The boom 6 is raised and lowered by a raising and lowering cylinder 16. Further, the boom 6 is configured to be nested, and is extended and retracted by a built-in telescopic cylinder 17.

ブーム６の先端部には、上下に揺動自在に垂直ポスト９が配設されている。この垂直ポスト９は、レベリング機構９ａにより、ブーム６の起伏角度如何に拘わらず、常に鉛直上方を向くようにレベリング制御が行われる。垂直ポスト９には、図示しない首振り作動モータにより水平旋回自在（首振り自在）に作業台１０が取り付けられている。 A vertical post 9 is disposed at the tip of the boom 6 so as to be swingable up and down. Leveling control is performed on the vertical post 9 by the leveling mechanism 9a so that the vertical post 9 is always directed vertically upward regardless of the angle of undulation of the boom 6. A work table 10 is attached to the vertical post 9 so as to be able to turn horizontally (swing freely) by a swinging operation motor (not shown).

作業台１０には、作業者が操作する上部操作装置２０が設けられている。上部操作装置２０は、旋回台５の旋回作動を行わせる旋回操作レバー２１、ブーム６の起伏作動を行わせる起伏操作レバー２２、ブーム６の伸縮作動を行わせる伸縮操作レバー２３等から構成されている。操作レバー２１〜２３は、それぞれ起立状態から前後左右の少なくともいずれかに傾動操作可能に構成され、作業者により傾動操作されると、傾動角に比例する操作信号がコントローラ（図示略）に出力される。なお、車体２上にも、上部操作装置２０とほぼ同じ機能を有する下部操作装置２５が設けられている。 The work table 10 is provided with an upper operation device 20 operated by an operator. The upper operating device 20 includes a turning operation lever 21 for turning the swivel base 5, a hoisting operation lever 22 for raising and lowering the boom 6, an extension operation lever 23 for causing the boom 6 to extend and retract. Yes. Each of the operation levers 21 to 23 is configured to be tiltable from at least one of front, back, left, and right from the standing state, and when the operator is tilted, an operation signal proportional to the tilt angle is output to a controller (not shown). The A lower operating device 25 having substantially the same function as the upper operating device 20 is also provided on the vehicle body 2.

なお、コントローラは、操作装置２０，２１から入力された操作信号に対応する流量が各油圧アクチュエータ１５〜１７に供給されるように制御バルブの開度制御を行う（例えば、上部操作装置２０は手動操作されることにより上部操作バルブＶの開度制御を行う）。その結果、旋回操作レバー２１を傾動操作するとその傾動角に対応した油量の作動油圧が旋回モータ１５に供給され、旋回台５が旋回操作レバー２１の傾動角に応じた速度で旋回作動する。起伏操作レバー２２を傾動操作するとその傾動角に対応した油量の作動油圧が起伏シリンダ１６に供給され、ブーム６が起伏操作レバー２２の傾動角に応じた速度で起伏作動する。そして、伸縮操作レバー２２を傾動操作するとその傾動角に対応した油量の作動油圧が伸縮シリンダ１７に供給され、ブーム６が伸縮操作レバー２３の傾動角に応じた速度で伸縮作動する。 The controller controls the opening of the control valve so that the flow rate corresponding to the operation signal input from the operation devices 20 and 21 is supplied to the hydraulic actuators 15 to 17 (for example, the upper operation device 20 is manually operated). When operated, the opening degree of the upper operation valve V is controlled). As a result, when the swing operation lever 21 is tilted, the hydraulic oil pressure corresponding to the tilt angle is supplied to the swing motor 15, and the swivel 5 is rotated at a speed corresponding to the tilt angle of the swing operation lever 21. When the hoisting operation lever 22 is tilted, an operating hydraulic pressure with an oil amount corresponding to the tilting angle is supplied to the hoisting cylinder 16, and the boom 6 is hoisted at a speed corresponding to the tilting angle of the hoisting operation lever 22. When the telescopic operation lever 22 is tilted, the hydraulic oil pressure corresponding to the tilt angle is supplied to the telescopic cylinder 17, and the boom 6 is telescopically operated at a speed corresponding to the tilt angle of the telescopic operation lever 23.

このような構成の高所作業車１において、高所作業を行う場合、まず、車体２上にブーム６を格納した状態で作業現場まで移動させる。次に、アウトリガジャッキ４を下方に伸長させて、車体２を持ち上げ安定支持する。そして、作業者は作業台１０に搭乗し、作業者は操作装置２０に設けられている各操作レバー２１〜２３を操作して、旋回台５の旋回作動やブーム６の起伏・伸縮作動させ、作業台１０を所望の位置に移動させ、作業者は高所作業を行うことができるようになっている。なお、作業現場への移動時や高所作業を行わない場合は、ブーム６が車体２の前方を向くように旋回台５を旋回動させ、ブーム６を縮小させるとともに倒伏させ、ブーム６が車体２の前方に延びて作業台１０が運転キャビン２ａの上方にある格納位置にある状態とする。 In the aerial work vehicle 1 having such a configuration, when performing a high altitude work, first, the boom 6 is stored on the vehicle body 2 and moved to the work site. Next, the outrigger jack 4 is extended downward to lift and stably support the vehicle body 2. Then, the operator gets on the work table 10, and the operator operates the operation levers 21 to 23 provided in the operation device 20 to perform the swivel operation of the swivel table 5 and the hoisting / extending operation of the boom 6. The work table 10 is moved to a desired position so that the worker can perform work at a high place. When moving to the work site or not performing work at a high place, the swivel 5 is swung so that the boom 6 faces the front of the vehicle body 2, and the boom 6 is reduced and laid down. 2 and the work table 10 is in a retracted position above the operation cabin 2a.

ここで、本発明の作業台の取付構造３０と比較するため、図６を用いて、従来の作業台の取付構造１００について説明する。但し、図６において、従来の作業台の取付構造１００の明確にするため、作業台１０は省略している。また、本実施形態において、作業台の取付構造１００は、昇降装置Ｐを介して作業台１０に取り付けられている。 Here, for comparison with the worktable mounting structure 30 of the present invention, a conventional worktable mounting structure 100 will be described with reference to FIG. However, in FIG. 6, the work table 10 is omitted in order to clarify the conventional work table mounting structure 100. In the present embodiment, the worktable mounting structure 100 is attached to the worktable 10 via the lifting device P.

従来の作業台１０の取付構造１００は、垂直ポスト９の先端部に水平面内で首振り動可能に取り付けられた支持ブラケット１０１と、支持ブラケット１０１に固着されて略水平方向に延びる角パイプ部材１０２と、（後述する昇降装置Ｐを構成する）作業台１０の側面の左右に固着される一対の第２レール部材ｐ２，ｐ２を昇降自在に支持するベース部材１０３，１０３とを備え、角パイプ部材１０２はベース部材１０３，１０３間を固着連結している。また、角パイプ部材１０２には、補強材１０４，１０５が取り付けられている。 A conventional mounting structure 100 of the work table 10 includes a support bracket 101 that is attached to the tip of a vertical post 9 so as to be able to swing in a horizontal plane, and a square pipe member 102 that is fixed to the support bracket 101 and extends in a substantially horizontal direction. And base members 103 and 103 that support a pair of second rail members p2 and p2 that are fixed to the left and right sides of the work table 10 (which constitutes a lifting device P to be described later), and are square pipe members. Reference numeral 102 denotes a fixed connection between the base members 103 and 103. Further, reinforcing members 104 and 105 are attached to the square pipe member 102.

昇降装置Ｐは、支持ブラケット１０１に対して作業台１０を上下方向に移動可能に支持するものであり、作業台１０の側面の上下に固着される一対の第２基礎部材ｐ１，ｐ１と、作業台１０の側面の左右に固着される一対の第２レール部材ｐ２，ｐ２の間に固着連結された第２支持部材ｐ３とを備え、第２基礎部材ｐ１，ｐ１の左端間及び右端間に第２レール部材ｐ２，ｐ２が固着され、ベース部材１０３，１０３は図示しない第２昇降シリンダによりこれら第２レール部材ｐ２，ｐ２を昇降自在に保持している。また、昇降装置Ｐは、支持ブラケット１０１に対して作業台１０を上下方向に移動させる第２昇降シリンダ（図示略）を内蔵しており、該昇降シリンダには後述の油圧ホース及び上部操作バルブ（ともに図示略）を介して作動油が給排されている。油圧ホース（図示略）は、ブーム６の基端部からブーム６に沿って延びて、角パイプ部材１０４に巻き掛けられて、角パイプ部材１０４で囲まれた空間内を通り、第２昇降シリンダ（図示略）や作業台１０の首振り作動を行わせる首振り作動モータ（図示略）等への油圧の供給を制御する上部操作バルブ（図示略）に繋がるように配設される。 The elevating device P supports the work table 10 so as to be movable in the vertical direction with respect to the support bracket 101, and includes a pair of second base members p1 and p1 fixed to the top and bottom of the side surface of the work table 10, and the work And a second support member p3 fixedly connected between a pair of second rail members p2 and p2 fixed to the left and right sides of the side surface of the base 10, and between the left end and the right end of the second base members p1 and p1. The two rail members p2 and p2 are fixed, and the base members 103 and 103 hold the second rail members p2 and p2 up and down by a second lifting cylinder (not shown). The elevating device P incorporates a second elevating cylinder (not shown) that moves the work table 10 in the vertical direction with respect to the support bracket 101, and the elevating cylinder includes a hydraulic hose and an upper operation valve (described later). The hydraulic fluid is supplied and discharged via both (not shown). A hydraulic hose (not shown) extends from the base end of the boom 6 along the boom 6, is wound around the square pipe member 104, passes through the space surrounded by the square pipe member 104, and is moved to the second lifting cylinder. (Not shown) and an upper operation valve (not shown) for controlling the supply of hydraulic pressure to a swinging motor (not shown) for performing the swinging operation of the work table 10 or the like.

このような構成により、従来の作業台１０の取付構造１００では、角材や折り板材（例えば、角パイプ部材１０２，ベース部材１０３）の組み合わせにより構成されるため、これら部材の接合角部（例えば、接合角部ａ）などに応力集中が発生してしまう。このため、ガセットやパッチといった補強材（例えば、補強材１０４，１０５）を取り付けたり、使用材料に高価な高強度なものや厚みのあるものを用いたりする必要があった。また、作業台１０に昇降装置Ｐを備える場合においては、油圧ホースを配設する際に角パイプ部材１０２の角部で該油圧ホースが損傷するのを防ぐため、ホースガイドを設けたり、配管を用いて油圧ホースの引き廻しを行ったりしなければならなかった。このように、従来の作業台１０の取付構造１００では、該構造の複雑化や重量増、高コスト化を避けることは難しかった。 With such a configuration, the mounting structure 100 of the conventional work table 10 is configured by a combination of square members and folded plate members (for example, the square pipe member 102 and the base member 103). Stress concentration occurs at the joint corner a). For this reason, it has been necessary to attach reinforcing materials (for example, reinforcing materials 104 and 105) such as gussets and patches, or to use expensive, high-strength or thick materials. When the work table 10 is provided with the lifting device P, a hose guide is provided to prevent the hydraulic hose from being damaged at the corners of the square pipe member 102 when the hydraulic hose is provided. It had to be used to route the hydraulic hose. Thus, in the conventional mounting structure 100 of the work table 10, it is difficult to avoid the complexity, weight increase, and cost increase of the structure.

次に、図１，図３及び図４を用いて、本発明における高所作業車の作業台の取付構造３０について説明する。但し、図１において、作業台の取付構造３０を明確にするため、作業台１０は省略している。また、本実施形態において、作業台の取付構造３０は、昇降装置Ｓを介して作業台１０に取り付けられている。 Next, the worktable mounting structure 30 for an aerial work platform according to the present invention will be described with reference to FIGS. However, in FIG. 1, the work table 10 is omitted in order to clarify the work table mounting structure 30. In the present embodiment, the worktable mounting structure 30 is attached to the worktable 10 via the lifting device S.

本発明の作業台の取付構造３０は、上記問題を解決するため、図１，図３及び図４に示すように、垂直ポスト９の先端部に水平面内で首振り動可能に取り付けられた支持ブラケット３１と、支持ブラケット３１に固着されて該支持ブラケット３１の幅方向に沿って略水平に延びる水平部材３２と、（後述する昇降装置Ｓを構成する）作業台１０の側面の左右に固着される一対の第１レール部材ｓ２，ｓ２を昇降自在に支持するベース部材３３，３３と、水平部材３２の左右両端からベース部材３３，３３に向かって延びた左右一対の側板部材３４，３４とを備え、水平部材３２を丸パイプにより構成している。 In order to solve the above problems, the worktable mounting structure 30 according to the present invention is a support that is attached to the tip of the vertical post 9 so that it can swing in a horizontal plane, as shown in FIGS. The bracket 31, the horizontal member 32 fixed to the support bracket 31 and extending substantially horizontally along the width direction of the support bracket 31, and the left and right sides of the side surface of the work table 10 (which constitutes the lifting device S described later). Base members 33, 33 that support the pair of first rail members s2, s2 so as to be movable up and down, and a pair of left and right side plate members 34, 34 extending from the left and right ends of the horizontal member 32 toward the base members 33, 33. The horizontal member 32 is configured by a round pipe.

昇降装置Ｓは、支持ブラケット３１に対して作業台１０を上下方向に移動可能に支持するためのものであり、作業台１０の側面の上下に固着される一対の第１基礎部材ｓ１，ｓ１と、作業台１０の側面の左右に固着される一対の第１レール部材ｓ２，ｓ２の間に固着連結された第１支持部材ｓ３とを備え、第１基礎部材ｓ１，ｓ１の左端間及び右端間に第１レール部材ｓ２，ｓ２が固着され、ベース部材３３，３３は図示しない第１昇降シリンダによりこれら第１レール部材ｓ２，ｓ２を昇降自在に保持している。また、昇降装置Ｓは、支持ブラケット３１に対して作業台１０を上下方向に移動させる第１昇降シリンダ（図示略）を内蔵しており、該昇降シリンダには後述の油圧ホースＨ及び上部操作バルブＶを介して作動油が給排されている（図３参照）。油圧ホースＨは、ブーム６の基端部からブーム６に沿って延びて、丸パイプ部材で構成された水平部材３２に巻き掛けられて、水平部材３２と側板部材３４，３４とで構成される空間内を通り、第１昇降シリンダ（図示略）や作業台１０の首振り作動を行わせる首振り作動モータ（図示略）等への油圧の供給を制御する上部操作バルブＶに繋がるように配設される。 The lifting device S is for supporting the work table 10 so as to be movable in the vertical direction with respect to the support bracket 31, and a pair of first base members s 1, s 1 fixed to the upper and lower sides of the side surface of the work table 10. A first support member s3 fixedly connected between a pair of first rail members s2 and s2 fixed to the left and right sides of the work table 10, and between the left ends and the right ends of the first base members s1 and s1. The first rail members s2 and s2 are fixed to each other, and the base members 33 and 33 hold the first rail members s2 and s2 so as to be movable up and down by a first lifting cylinder (not shown). The elevating device S incorporates a first elevating cylinder (not shown) that moves the work table 10 in the vertical direction with respect to the support bracket 31. The elevating cylinder includes a hydraulic hose H and an upper operation valve, which will be described later. The hydraulic oil is supplied and discharged via V (see FIG. 3). The hydraulic hose H extends from the base end portion of the boom 6 along the boom 6, is wound around a horizontal member 32 formed of a round pipe member, and includes a horizontal member 32 and side plate members 34 and 34. It passes through the space and is arranged so as to be connected to an upper operation valve V that controls the supply of hydraulic pressure to a first lifting cylinder (not shown) and a swinging motor (not shown) that swings the work table 10. Established.

このような構成によれば、本発明は、機種毎に側板部材３４だけを設計・製造すればよく、支持ブラケット３１、丸パイプ部材からなる水平部材３２及びベース部材３３は共通部品を利用することができる。そして、これらの部品を用いて、本実施形態では図４に示すように、垂直ポスト９へのベース部材３３の取付角度α（詳しくは、垂直ポスト９の中心軸ｍと、ベース部材３３と略平行をなし、第１レール部材ｓ２の長手方向に形成された作業台１０に固定するためのボルト（図示略）を嵌挿する嵌挿孔ｓ４の中心を通る線ｎとがなす角度）が、機種毎に設定されている所定角度を満足するように、支持ブラケット３１に水平部材３２を取り付け、丸パイプ部材からなる水平部材３２と（昇降装置Ｓに取り付けられている）ベース部材３３との間に側板部材３４を取り付ければよい。 According to such a configuration, in the present invention, only the side plate member 34 needs to be designed and manufactured for each model, and the support bracket 31, the horizontal member 32 including the round pipe member, and the base member 33 use common parts. Can do. Then, using these components, in this embodiment, as shown in FIG. 4, the mounting angle α of the base member 33 to the vertical post 9 (specifically, the center axis m of the vertical post 9 and the base member 33 are substantially the same). An angle formed by a line n passing through the center of the insertion hole s4 into which a bolt (not shown) for fixing to the work table 10 formed in the longitudinal direction of the first rail member s2 is formed. A horizontal member 32 is attached to the support bracket 31 so as to satisfy a predetermined angle set for each model, and between the horizontal member 32 made of a round pipe member and the base member 33 (attached to the lifting device S). What is necessary is just to attach the side-plate member 34 to.

このように、本発明は、側板部材３４を高所作業車１の変更可能部品とし、支持ブラケット３１、水平部材３２及びベース部材３３を高所作業車１の共通部品とすることで、機種の仕様が変更されても（以下に、図５を用いてブーム６と垂直ポスト９の間の仕様を変更した例を挙げている）、側板部材３４のみを新たに設計・製造すればよいため、部品の共通化が図れ、製造コストの増加を抑制することができる。 Thus, the present invention makes the side plate member 34 a changeable part of the aerial work vehicle 1, and uses the support bracket 31, the horizontal member 32, and the base member 33 as common parts of the aerial work vehicle 1. Even if the specification is changed (hereinafter, an example in which the specification between the boom 6 and the vertical post 9 is changed using FIG. 5), only the side plate member 34 needs to be newly designed and manufactured. Parts can be shared, and an increase in manufacturing cost can be suppressed.

また、図１に示すように、本発明は、水平部材３２に丸パイプ部材を使用することにより、この水平部材３２に取り付けられている部材、すなわち、支持ブラケット３１との接合部Ａ及び側板部材３４との接合部Ｂに作用する応力をそれぞれ分散させている。また、図１に示すように、本発明は、側板部材３４を丸パイプ部材からなる水平部材３２の左右両端からベース部材３３に向かって斜めに配置することにより、ベース部材３３と側板部材３４との接合部Ｃに作用する応力を分散させている。よって、本発明は、構成部材に丸パイプ部材を使用することにより、強度を確保するための補強材や高強度材が不要となり、従来の構造と比べて簡素・軽量且つ低コスト化を実現することが可能である。 In addition, as shown in FIG. 1, the present invention uses a round pipe member for the horizontal member 32, so that the member attached to the horizontal member 32, that is, the joint A with the support bracket 31 and the side plate member. The stress acting on the joint portion B with 34 is dispersed. As shown in FIG. 1, the present invention is arranged such that the side plate member 34 is disposed obliquely from the left and right ends of the horizontal member 32 made of a round pipe member toward the base member 33, so that the base member 33, the side plate member 34, The stress acting on the joint C is dispersed. Therefore, the present invention eliminates the need for a reinforcing material or a high-strength material for ensuring strength by using a round pipe member as a constituent member, and realizes simplicity, light weight, and cost reduction compared to the conventional structure. It is possible.

更に、上記のように作業台１０に昇降装置Ｓを備える場合においては、図３に示すように、油圧ホースＨを配設する際に、水平部材３２自体を該油圧ホースＨを掛け回す際のホースガイドとして利用できる。よって、構成部品を減らして、本発明は、構造の簡素化、軽量化及び低コスト化に貢献できる。 Further, in the case where the work table 10 is provided with the lifting device S as described above, when the hydraulic hose H is disposed, as shown in FIG. Can be used as a hose guide. Therefore, by reducing the number of components, the present invention can contribute to the simplification, weight reduction, and cost reduction of the structure.

以上のような本発明の作業台の取付構造を、上記構成の高所作業車１とはブーム６と垂直ポスト９との間の仕様が異なる高所作業車１´に用いる場合について説明する。なお、以下の説明において理解を容易にするため、上記実施形態とは異なる部分のみ説明し、また上記実施形態と対応する部分には同一の符号をつけてその説明を省略する。 The case where the worktable mounting structure of the present invention as described above is used for an aerial work vehicle 1 ′ in which the specifications between the boom 6 and the vertical post 9 are different from those of the aerial work vehicle 1 configured as described above will be described. In order to facilitate understanding in the following description, only portions different from the above embodiment will be described, and portions corresponding to the above embodiment will be denoted by the same reference numerals and description thereof will be omitted.

高所作業車１´は、図５に示すように、ブーム６と垂直ポスト９との間に、ブーム６の先端部に上下方向に揺動可能に枢結されてブーム６の起伏角度の如何に拘わらず略鉛直上方に延びて位置する第２垂直ポスト５１と、第２垂直ポスト５１の先端部に水平面内で首振り動可能に取り付けられた第２支持ブラケット５２とを備え、垂直ポスト９は第２支持ブラケット５２の先端部から略鉛直上方に延びて位置するように構成される。 As shown in FIG. 5, the aerial work vehicle 1 ′ is pivotally connected to the tip of the boom 6 between the boom 6 and the vertical post 9 so as to be swingable in the vertical direction. The vertical post 9 includes a second vertical post 51 that extends substantially vertically upwards, and a second support bracket 52 that is attached to the tip of the second vertical post 51 so as to be able to swing in a horizontal plane. Is configured to extend substantially vertically upward from the tip of the second support bracket 52.

このような構成の高所作業車１´に用いる場合、本発明の作業台の取付構造３０´では新たに設計・製造する部品は側板部材５３だけでよく、支持ブラケット３１、水平部材３２（丸パイプ部材）及びベース部材３３は上記の高所作業車１にも用いた共通部品を利用することができる。そして、これらの部品を用いて、本実施形態では図５に示すように、垂直ポスト９へのベース部材３３の取付角度α´（より詳しくは、垂直ポスト９の中心軸ｍと、ベース部材３３と略平行をなし、第１レール部材ｓ２の長手方向に形成された作業台１０に固定するためのボルト（図示略）を嵌挿する嵌挿孔ｓ４の中心を通る線ｎとがなす角度）が、この機種に設定されている所定角度を満足するように、支持ブラケット３１に丸パイプ部材からなる水平部材３２を取り付け、この水平部材３２からベース部材３３に向かって斜めに側板部材３４を取り付ければよい。このように、本発明は、機種毎に新たに設計・製造する部品の種類を減らして、製造コストの増加を抑えることが可能である。 When used in the aerial work platform 1 ′ having such a configuration, the worktable mounting structure 30 ′ requires only the side plate member 53 to be newly designed and manufactured, the support bracket 31, the horizontal member 32 (round The pipe member) and the base member 33 can use the common parts used for the above-described aerial work vehicle 1. Then, using these components, in this embodiment, as shown in FIG. 5, the mounting angle α ′ of the base member 33 to the vertical post 9 (more specifically, the central axis m of the vertical post 9 and the base member 33). And an angle formed by a line n passing through the center of an insertion hole s4 into which a bolt (not shown) for fixing to the work table 10 formed in the longitudinal direction of the first rail member s2 is inserted. However, a horizontal member 32 made of a round pipe member is attached to the support bracket 31 so that the predetermined angle set for this model is satisfied, and the side plate member 34 is attached obliquely from the horizontal member 32 toward the base member 33. That's fine. As described above, according to the present invention, it is possible to reduce the types of parts newly designed and manufactured for each model, thereby suppressing an increase in manufacturing cost.

なお、本発明は、上記実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲であれば適宜改良可能である。 In addition, this invention is not limited to the said embodiment, If it is a range which does not deviate from the summary of this invention, it can improve suitably.

本発明の高所作業車の作業台取付構造の構成図である。It is a block diagram of the worktable attachment structure of the aerial work vehicle of this invention. 本発明の高所作業車の作業台取付構造を搭載している高所作業車の斜視図である。It is a perspective view of an aerial work vehicle equipped with a work platform mounting structure for an aerial work vehicle of the present invention. 本発明の高所作業車の作業台取付構造の斜視図である。It is a perspective view of the worktable attachment structure of the aerial work vehicle of the present invention. 本発明の高所作業車の作業台取付構造の側面図である。It is a side view of the worktable attachment structure of the aerial work vehicle of the present invention. 他の実施形態における高所作業車の作業台取付構造の側面図である。It is a side view of the worktable attachment structure of an aerial work vehicle in other embodiment. 従来の高所作業車の作業台取付構造の構成図である。It is a block diagram of the conventional platform mounting structure of an aerial work vehicle.

符号の説明Explanation of symbols

１高所作業車
２車体
５旋回台
６ブーム
９垂直ポスト
１０作業台
３０高所作業車の作業台の取付構造
３１支持ブラケット
３２水平部材（丸パイプ部材）
３３ベース部材
３４側板部材
５１第２垂直ポスト
５２第２支持ブラケット
３０´ 高所作業車の作業台の取付構造（他の実施形態）
５３側板部材（他の実施形態）
Ｓ昇降装置
ｓ１第１基礎部材
ｓ２第１レール部材
ｓ３第１支持部材
ｓ４ボルト嵌挿孔
Ｈ油圧ホース DESCRIPTION OF SYMBOLS 1 High-altitude work vehicle 2 Car body 5 Swivel base 6 Boom 9 Vertical post 10 Work base 30 Mounting structure of work base of high-altitude work vehicle 31 Support bracket 32 Horizontal member (round pipe member)
33 Base member 34 Side plate member 51 Second vertical post 52 Second support bracket 30 'Work table mounting structure for an aerial work platform (another embodiment)
53 Side plate member (another embodiment)
S Lifting Device s1 First Foundation Member s2 First Rail Member s3 First Support Member s4 Bolt Insertion Hole H Hydraulic Hose

Claims

車体に少なくとも起伏動可能に取り付けられたブームと、前記ブームの先端部に上下方向に揺動可能に枢結されて前記ブームの起伏動に応じて揺動制御されて前記ブームの起伏角度の如何に拘わらず略鉛直上方に延びて位置する垂直ポストと、前記垂直ポストに水平面内で首振り動可能に取り付けられた作業台とからなり、
前記垂直ポストの先端部に水平面内で首振り動可能に取り付けられた支持ブラケットと、
前記支持ブラケットに固着され、前記支持ブラケットの幅方向に沿って略水平に延びる水平部材と、
前記作業台の側面の左右に固着され、上下に延びる一対のベース部材と、
前記水平部材の左右両端から前記ベース部材に向かって延びた左右一対の側板部材とを備えた高所作業車の作業台取付構造において、
前記水平部材を丸パイプ部材により構成したことを特徴とする高所作業車の作業台取付構造。 A boom that is attached to the vehicle body so as to be able to move up and down at least, and is pivotally connected to the tip of the boom so as to be able to swing in the vertical direction. Regardless of the vertical post, which extends substantially vertically upward, and a work table attached to the vertical post so as to be able to swing in a horizontal plane,
A support bracket attached to the tip of the vertical post so as to be able to swing in a horizontal plane;
A horizontal member fixed to the support bracket and extending substantially horizontally along the width direction of the support bracket;
A pair of base members fixed to the left and right sides of the work table and extending vertically; and
In a work platform mounting structure for an aerial work vehicle comprising a pair of left and right side plate members extending from the left and right ends of the horizontal member toward the base member,
A work platform mounting structure for an aerial work vehicle, wherein the horizontal member is formed of a round pipe member.

前記作業台の首振り動を行わせる首振り作動モータ等への油圧の供給を制御する上部操作バルブと、
前記上部操作バルブに前記ブームの基端側から作動油の給排を行う油圧ホースとを備え、
前記油圧ホースは、前記ブームの基端側から前記ブームに沿って延びて、丸パイプ部材により構成された前記水平部材に巻き掛けられ、前記水平部材と前記側板部材とで構成される空間内を通り、前記上部操作バルブに繋がって配設されることを特徴とする請求項１に記載の高所作業車の作業台取付構造。 An upper operation valve for controlling the supply of hydraulic pressure to a swing operation motor or the like for swinging the work table;
A hydraulic hose for supplying and discharging hydraulic oil from the base end side of the boom to the upper operation valve;
The hydraulic hose extends from the base end side of the boom along the boom, is wound around the horizontal member formed by a round pipe member, and passes through the space formed by the horizontal member and the side plate member. The work platform mounting structure for an aerial work vehicle according to claim 1, wherein the work table mounting structure is connected to the upper operation valve.