JP5058453B2 - Work vehicle - Google Patents

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JP5058453B2
JP5058453B2 JP2005171715A JP2005171715A JP5058453B2 JP 5058453 B2 JP5058453 B2 JP 5058453B2 JP 2005171715 A JP2005171715 A JP 2005171715A JP 2005171715 A JP2005171715 A JP 2005171715A JP 5058453 B2 JP5058453 B2 JP 5058453B2
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roller
vehicle
work
ground
work vehicle
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JP2006341990A (en
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耕伴 吉田
強 香川
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Tadano Ltd
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Tadano Ltd
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Description

本発明は、車両上に作業機を搭載した作業車両に関するものである。   The present invention relates to a work vehicle having a work machine mounted on the vehicle.

この種の作業車両として、高所作業車、橋梁点検車、クレーン車等がある。これらの作業車両は、停止位置で作業する場合には、アウトリガで車両を地面から浮上させて、車両を地面に支持させて作業を行う。この場合には、車両をアウトリガで地面に支持させるものであるから、作業範囲が広くとれるものの、アウトリガの接地板が地面に接地しているので車両は移動できない。他方、架線工事やトンネル内面工事あるいは橋梁点検等の長い範囲を作業する場合には、車両を順次移動させながら行う必要があるが、車輪のみの接地ではサスペンションや車輪(タイヤ)の弾性により、車両が弾性的に揺れる。特に、高所作業車や橋梁点検車では、作業台が揺れ易くなり、作業がやりにくくなったり、乗り心地が悪くなったりする。   Examples of this type of work vehicle include an aerial work vehicle, a bridge inspection vehicle, and a crane vehicle. When these work vehicles work at a stop position, they are lifted from the ground by an outrigger, and the work is supported on the ground. In this case, since the vehicle is supported on the ground by the outrigger, the working range can be widened, but the vehicle cannot move because the ground plate of the outrigger is in contact with the ground. On the other hand, when working on long areas such as overhead wire construction, tunnel inner surface construction or bridge inspection, it is necessary to move the vehicle sequentially, but when only wheels are grounded, the vehicle is affected by the elasticity of the suspension and wheels (tires) Sway elastically. In particular, in an aerial work vehicle or a bridge inspection vehicle, the work table easily shakes, making the work difficult to perform or making the ride uncomfortable.

そこで、従来から、車体の前後・左右4箇所にローラ付きジャッキを配置し、各ジャッキの下端部にローラを車輪とともに接地させて、車両を移動させながら順次作業を行えるようにした作業車両が公知である。(例えば特許文献1参照)
特開2000−118367号公報(第3頁〜第4頁、図1、図3、図4)
Therefore, conventionally, work vehicles have been known in which jacks with rollers are arranged at four positions on the front, rear, left and right of the vehicle body, and the rollers are grounded together with the wheels at the lower end of each jack so that the work can be performed sequentially while moving the vehicle. It is. (For example, see Patent Document 1)
JP 2000-118367 A (page 3 to page 4, FIG. 1, FIG. 3, FIG. 4)

ところで、上記ローラ付ジャッキは、ローラ付ジャッキの下端部に取付けられ、ローラに替えて接地可能な接地板を有したジャッキベースを備えている。このジャッキベースは、接地板がローラの下面を覆う板設置位置と、ローラ下面を露出する退避位置とに揺動させるようにしている。すなわち、このローラ付ジャッキは、板設置位置では接地板を地面に接地させて車両を停止位置で作業を行い、退避位置ではローラを地面に接地させて車両を移動させながら作業するようにしている。 By the way, the roller-equipped jack includes a jack base that is attached to the lower end of the roller-equipped jack and has a grounding plate that can be grounded instead of the roller. The jack base is swung between a plate installation position where the ground plate covers the lower surface of the roller and a retracted position where the lower surface of the roller is exposed. That is, the roller-equipped jack is configured such that the ground plate is grounded to the ground at the plate installation position and the vehicle is operated at the stop position, and the roller is grounded to the ground and the vehicle is moved at the retracted position. .

ところがこのローラ付ジャッキでローラを地面に接地させて車両を移動させながら作業する場合に、凹凸の地面であると前輪が凹部に位置し前後のローラならびに後輪が凸部に位置している時には、作業車両は前後のローラや後輪に支持されて前輪は地面に接地せずに凹部で宙に浮いて空転することがある。通常前輪は作業車両の左右操舵を行う車輪でありこの前輪が空転するものだから、この時には作業車両の操舵が不能になることがある。   However, when working with the roller grounded on the ground and moving the vehicle with this roller-equipped jack, when the front and rear rollers and the rear wheel are located in the convex part when the front and rear wheels and the rear wheel are located in the convex part when the ground is uneven The work vehicle is supported by the front and rear rollers and the rear wheel, and the front wheel sometimes does not come into contact with the ground but floats in the air in the recess and may idle. Usually, the front wheel is a wheel that steers the work vehicle from left to right, and the front wheel is idling. Therefore, at this time, the work vehicle may not be steered.

本発明は、このようなことになるのを可及的に防止できる作業車両を提供することを目的とする。   An object of this invention is to provide the work vehicle which can prevent such a thing as much as possible.

上記の目的を達成するため、本発明の請求項1記載の作業車両は、車両上に作業機を搭載するとともに車両の前後左右位置にそれぞれ下端に接地板を備え作業車両を地面に支持させるアウトリガを4基配置し、当該後方に配置した2基のアウトリガにのみ下端に備えた接地板に替えてローラを配置可能にし、作業車両を停止位置で作業する際には前後4基の各アウトリガの接地板を地面に接地させて作業車両を支持させ、作業車両を走行させながら作業する際には後方2基のアウトリガの下端にローラを配置させこの2基のアウトリガのみを車輪を浮上させない範囲で張出し作業車両をローラで地面に支持させ車両を駆動走行するようにしたことを特徴とするものである。   In order to achieve the above object, a work vehicle according to claim 1 of the present invention includes an outrigger in which a work machine is mounted on the vehicle, and a grounding plate is provided at each of the front, rear, left, and right positions of the vehicle at the lower ends thereof. 4 are arranged, and a roller can be arranged instead of the ground plate provided at the lower end only in the two outriggers arranged at the rear, and when the work vehicle is operated at the stop position, the front and rear four outriggers are arranged. When the work vehicle is supported by grounding the grounding plate to the ground and the work vehicle is running, a roller is disposed at the lower end of the two rear outriggers, and only these two outriggers do not lift the wheels. The overhanging work vehicle is supported on the ground by a roller and the vehicle is driven to run.

請求項2記載の作業車両は、請求項1において、前記作業機は、車両の運転席直後方の荷台前部位置に旋回可能な旋回台と、旋回台に取付けたブームとを備えて構成していることを特徴とするものである。   A work vehicle according to a second aspect of the present invention is the work vehicle according to the first aspect, wherein the work machine includes a swivel that can be swiveled to a position in front of the loading platform immediately after the driver's seat of the vehicle, and a boom that is attached to the swivel. It is characterized by that.

請求項1に係る本発明の作業車両は、後方に配置した2基のアウトリガにのみ下端に備えた接地板に替えてローラを配置可能にし、作業車両を走行させながら作業する際には後方2基のアウトリガの下端にローラを配置させこの2基のアウトリガのみを車輪を浮上させない範囲で張出し作業車両をローラで地面に支持させ車両を駆動走行するようにしたものであるから、走行させる際の地面が凹凸であっても作業車両の前部には前輪でしか車両を支持しない(前部にローラ付のジャッキを配置していない。)。よって前輪が凹部に位置しても、前輪が凹部で宙に浮いて空転することはなく、作業車両の操舵が不能になることはない。しかも後方に配置した2基のアウトリガにのみ下端に備えた接地板に替えてローラを配置可能にしたものであるから、後方のアウトリガとは別にローラ付ジャッキを配置する場合と比較して作業車両の重量を軽減させることができるとともに、安価なコストで製作できる。   The work vehicle according to the first aspect of the present invention enables rollers to be arranged in place of the ground plate provided at the lower end only in the two outriggers arranged at the rear, and when working while the work vehicle is traveling, the rear 2 Since a roller is arranged at the lower end of the base outrigger and only the two outriggers are extended so that the wheels are not lifted, the working vehicle is supported on the ground by the roller and the vehicle is driven to run. Even if the ground is uneven, the front of the work vehicle is supported only by the front wheels (a jack with a roller is not disposed at the front). Therefore, even if the front wheels are located in the recesses, the front wheels do not float in the air in the recesses and do not idle, so that the work vehicle cannot be steered. In addition, since the rollers can be arranged in place of the ground plate provided at the lower end only in the two outriggers arranged at the rear, the work vehicle is compared with the case where the jack with the roller is arranged separately from the rear outriggers. Can be manufactured at a low cost.

また、請求項2に係る本発明の作業車両は、車両の運転席直後方の荷台前部位置に旋回可能に旋回台を配置し、旋回台の旋回中心と後方のアウトリガとの距離を離間させるようにしている。よって、作業車両を後方のアウトリガ下端にローラを配置して地面に支持させ駆動走行させながら作業する場合に、一般にブームを後方に向けて作業させるものであるから、作業範囲を広く取ることができる。   According to a second aspect of the present invention, there is provided a work vehicle according to a second aspect of the present invention, wherein a swivel is disposed at a front of the loading platform immediately behind the driver's seat so as to be able to turn, and the distance between the turning center of the swivel and the rear outrigger is separated. I am doing so. Accordingly, when the work vehicle is operated while being driven and driven by placing a roller at the lower end of the rear outrigger, the boom is generally operated rearward, the work range can be widened. .

以下本発明に係る作業車両の実施形態について、図1〜図7に図示し以下に説明する。図1〜図4に図示するように、作業車両は、車両1に操舵可能な左右一対の前輪2と車両1に搭載したエンジンにより回転駆動される左右一対の後輪3を備えている。車両1の前後左右位置にそれぞれ下端に接地板5を備え作業車両を地面に支持させるアウトリガ4を4基配置している。アウトリガ4は、次に説明するジャッキ30を車両1のフレームに固定したアーム(図示しない)に直接取付けている。ジャッキ30は、外筒31と、外筒31に伸縮自在に内嵌させた内筒32と、外筒31と内筒32間に外筒31に対して内筒32を伸縮駆動させる油圧シリンダ33と、内筒32の下端に止着させた接地板5とで構成している。なお、ジャッキ30は、上述したように車両1のフレームに固定したアームに直接取付けるようにしてもよいが、アームを伸縮自在としてジャッキ30を車両1の幅方向に進退可能にしたものであってもよい。   Embodiments of a work vehicle according to the present invention will be described below with reference to FIGS. As shown in FIGS. 1 to 4, the work vehicle includes a pair of left and right front wheels 2 that can be steered by the vehicle 1 and a pair of left and right rear wheels 3 that are rotationally driven by an engine mounted on the vehicle 1. Four outriggers 4 each having a grounding plate 5 at the lower end and supporting the work vehicle on the ground are arranged at front, rear, left and right positions of the vehicle 1. The outrigger 4 is directly attached to an arm (not shown) in which a jack 30 described below is fixed to the frame of the vehicle 1. The jack 30 includes an outer cylinder 31, an inner cylinder 32 fitted in the outer cylinder 31 so as to be extendable and contracted, and a hydraulic cylinder 33 that drives the inner cylinder 32 to extend and contract with respect to the outer cylinder 31 between the outer cylinder 31 and the inner cylinder 32. And the grounding plate 5 fixed to the lower end of the inner cylinder 32. The jack 30 may be directly attached to the arm fixed to the frame of the vehicle 1 as described above, but the arm 30 can be extended and retracted so that the jack 30 can be advanced and retracted in the width direction of the vehicle 1. Also good.

そして、作業車両に配置した上記アウトリガ4は、前方のアウトリガ4aを2基と後方のアウトリガ4bを2基とで構成し、その内後方に配置した2基のアウトリガ4bにのみ下端に備えた接地板5に替えてローラ6を配置可能にしている。ローラ6は、ジャッキ30の車両前方において図2に図示するように、内筒32の下端部に内外2つの保持アーム62,62で支持して上下に弧回動し得るようにしている。すなわち、各保持アーム62,62の先端部でローラ6の軸61の両端部を支持し、各保持アーム62,62の基端部を内筒32の下端部の内外面に枢軸63で枢支して、該枢軸63を中心にして保持アーム62,62およびローラ6が上下に弧回動し得るようにしている。   The outrigger 4 arranged on the work vehicle is composed of two front outriggers 4a and two rear outriggers 4b, and only two outriggers 4b arranged on the rear side are provided at the lower end. A roller 6 can be arranged in place of the main plate 5. As shown in FIG. 2, the roller 6 is supported by two inner and outer holding arms 62 and 62 at the lower end portion of the inner cylinder 32 in the vehicle front side of the jack 30 so as to be able to turn up and down. That is, both ends of the shaft 61 of the roller 6 are supported by the distal ends of the holding arms 62 and 62, and the base ends of the holding arms 62 and 62 are pivotally supported by the pivot 63 on the inner and outer surfaces of the lower end of the inner cylinder 32. Thus, the holding arms 62 and 62 and the roller 6 can be turned up and down around the pivot 63.

また、ローラ6は図4に図示するように、ローラ下面が接地板5下面より高くなる上動位置と、図3に図示するようにローラ下面が接地板5下面より低くなる下動位置とでそれぞれ位置保持させる位置保持手段を設けている。この保持手段は、ロックピン71による固定方式が採用されている。   As shown in FIG. 4, the roller 6 has an upward movement position where the lower surface of the roller is higher than the lower surface of the ground plate 5 and a downward movement position where the lower surface of the roller is lower than the lower surface of the ground plate 5 as shown in FIG. Position holding means for holding each position is provided. As this holding means, a fixing method using a lock pin 71 is adopted.

すなわち、図2に図示するように、内筒32の下端部の車両前方側側面にピン穴つきの2つのブラケット72,72を設け、該各ブラケット72,72のピン穴に1本のロックピン71を挿通させている。ロックピン71は、各ブラケット72,72からそれぞれ若干長さづつ外方にはみ出す状態(符合71a,71a)で挿通されている。そして、図2および図4に図示するように、両各保持アーム62,62をロックピン71の両はみ出し部分71a,71a上に載せることで、ローラ6(両各保持アーム62,62)の下動を阻止するようにしている。図2および図4に図示する状態(各保持アーム62がロックピンはみ出し部分71a上に載った状態)では、ローラ6の下面は接地板5の下面より高位置にある(ローラ6が上動位置となる)。   That is, as shown in FIG. 2, two brackets 72, 72 with pin holes are provided on the vehicle front side surface of the lower end portion of the inner cylinder 32, and one lock pin 71 is provided in the pin hole of each bracket 72, 72. Is inserted. The lock pin 71 is inserted in a state of protruding slightly outward from the brackets 72 and 72 (signs 71a and 71a). As shown in FIGS. 2 and 4, the holding arms 62 and 62 are placed on the protruding portions 71 a and 71 a of the lock pin 71, so that the roller 6 (the holding arms 62 and 62) is under the roller 6. I try to prevent the movement. 2 and 4 (in the state where each holding arm 62 is placed on the lock pin protruding portion 71a), the lower surface of the roller 6 is higher than the lower surface of the ground plate 5 (the roller 6 is in the upward movement position). Become).

なお、図2の状態で。ロックピン71を各ブラケット72,72から抜き外すと、ローラ6が下方に回動可能になる。他方、各保持アーム62,62の長さ方向中間部には、図3に図示するように、各保持アーム62,62が水平方向まで下方に回動した状態で、各ブラケット72,72のピン穴と合致するピン穴64,64(図2)が形成されている。そして、保持アーム62のピン穴64とブラケット72のピン穴とにロックピン71を挿通させると、図3に図示するようにロックピン71で保持アーム62を水平姿勢で固定できるようになっている。保持アーム62が水平姿勢状態(図3)では、ローラ6の下面が接地板5の下面より低位置にある(ローラ6が下動位置となる)。   In the state of FIG. When the lock pin 71 is removed from the brackets 72, 72, the roller 6 can be rotated downward. On the other hand, as shown in FIG. 3, the holding arms 62, 62 are pivoted downward in the horizontal direction at the intermediate portions in the longitudinal direction of the holding arms 62, 62. Pin holes 64, 64 (FIG. 2) are formed to match the holes. When the lock pin 71 is inserted through the pin hole 64 of the holding arm 62 and the pin hole of the bracket 72, the holding arm 62 can be fixed in a horizontal posture by the lock pin 71 as shown in FIG. . When the holding arm 62 is in the horizontal posture state (FIG. 3), the lower surface of the roller 6 is positioned lower than the lower surface of the ground plate 5 (the roller 6 is in the downward movement position).

車両1に搭載させる作業機Aは、車両1の運転席1a直後方の荷台前部位置に旋回駆動可能に配置した旋回台11と旋回台11にブーム12を取付けている。旋回台11は上方を後方に屈曲させており、上端部にブーム12の基端部を枢支させている。ブーム12は、基ブーム12aと基ブーム12aに順次嵌挿させた中間ブーム12bと先ブーム12cとからなる伸縮ブームで構成している。基ブーム12aと旋回台11の適所間には、ブーム12を起伏させる起伏用油圧シリンダ13を配置している。ブーム12の各ブ―ム間には各ブームを伸縮駆動させる油圧シリンダ等の適宜伸縮駆動装置(図示しない)を配置している。   The work machine A to be mounted on the vehicle 1 has a boom 12 attached to a swivel base 11 and a swivel base 11 which are disposed so as to be capable of swiveling at the front of the loading platform immediately after the driver's seat 1 a of the vehicle 1. The swivel base 11 is bent upward at the rear, and the base end of the boom 12 is pivotally supported at the upper end. The boom 12 is composed of a telescopic boom composed of a base boom 12a, an intermediate boom 12b that is sequentially fitted into the base boom 12a, and a tip boom 12c. A hoisting hydraulic cylinder 13 for hoisting the boom 12 is disposed between appropriate positions of the base boom 12 a and the swivel base 11. An appropriate expansion / contraction drive device (not shown) such as a hydraulic cylinder for extending and retracting each boom is disposed between the booms of the boom 12.

先ブーム12cの先端部にはブーム12の起伏動に関わりなく鉛直姿勢を維持させる維持装置を介してポスト(図示しない)を配置しており、このポストに作業台14を旋回駆動可能に配置している。   A post (not shown) is disposed at the tip of the front boom 12c via a maintenance device that maintains a vertical posture regardless of the up-and-down movement of the boom 12, and the work table 14 is disposed on the post so as to be able to be driven to rotate. ing.

このように構成した本発明に係る作業車両は、次のように作用する。すなわち、架線工事するために作業車両をローラ6で地面に支持させ後輪で駆動走行させながら作業する場合について以下に説明する。まず、図3に図示するように、後方のアウトリガ4bにおける各保持アーム62,62を水平方向まで下方に回動した状態で、各ブラケット72,72のピン穴と各保持アーム62,62のピン穴64,64とを合致させ、各ピン穴にロックピン71を挿通させる。すると図3に図示するようにロックピン71で保持アーム62を水平姿勢で固定でき、この状態では、ローラ6の下面が接地板5の下面より低位置にある(ローラ6が下動位置となる)。(図3に実線で示す状態)
この状態で、後方アウトリガ4bのジャッキ30の油圧シリンダ33を伸長させ、外筒31より内筒32を伸長させ,ローラ6を地面に接地させる。この時後輪3を浮上させない範囲でローラ6を接地させるように油圧シリンダ33を伸長させる。(図3に二点鎖線で示す状態)
そして作業台14に搭乗した作業者はブーム12を適宜伸縮、起伏ならびに旋回台11を旋回させ、作業台14を作業目的位置である後方の架線位置に位置させて作業する。そして運転席1aに搭乗した作業者により作業車両を前進させ、作業台14を架線に沿って移動させ、作業台14の作業者により架線に沿って作業を行うのである。
The work vehicle according to the present invention configured as described above operates as follows. That is, a case where the work vehicle is supported on the ground by the roller 6 and driven and driven by the rear wheels for the construction of the overhead wire will be described below. First, as shown in FIG. 3, the pin holes of the brackets 72 and 72 and the pins of the holding arms 62 and 62 are rotated in a state where the holding arms 62 and 62 of the rear outrigger 4b are rotated downward in the horizontal direction. The holes 64 are aligned with each other, and the lock pin 71 is inserted into each pin hole. Then, as shown in FIG. 3, the holding arm 62 can be fixed in a horizontal posture by the lock pin 71. In this state, the lower surface of the roller 6 is positioned lower than the lower surface of the ground plate 5 (the roller 6 is in the downward movement position). ). (State shown by solid line in FIG. 3)
In this state, the hydraulic cylinder 33 of the jack 30 of the rear outrigger 4b is extended, the inner cylinder 32 is extended from the outer cylinder 31, and the roller 6 is grounded to the ground. At this time, the hydraulic cylinder 33 is extended so that the roller 6 is grounded within a range where the rear wheel 3 is not lifted. (State shown by a two-dot chain line in FIG. 3)
Then, the worker who has boarded the work table 14 works by expanding and contracting the boom 12 and raising / lowering the swivel table 11 as appropriate, and turning the work table 14 at the rear overhead line position as the work target position. Then, the work vehicle is moved forward by the worker who has boarded the driver's seat 1a, the work table 14 is moved along the overhead line, and the worker on the work table 14 performs the work along the overhead line.

このように、後方に配置した2基のアウトリガ4bにのみ下端に備えた接地板5に替えてローラ6を配置可能にし、作業車両を走行させながら作業する際には後方2基のアウトリガ4bの下端にローラ6を配置させこの2基のアウトリガ4bのみを車輪を浮上させない範囲で張出し作業車両をローラ6で地面に支持させ車両1を駆動走行するようにしたものであるから、走行させる際の地面が凹凸であっても作業車両の前部負荷は前輪2でしか支持しない(前部にローラ付のジャッキを配置していない)。よって前輪2が凹部に位置しても、前輪2が凹部で宙に浮いて空転することはなく、作業車両の操舵が不能になることはない。しかも後方に配置した2基のアウトリガ4bにのみ下端に備えた接地板5に替えてローラ6を配置可能にしたものであるから、後方のアウトリガ4bとは別にローラ付ジャッキを配置する場合と比較して作業車両の重量を軽減させることができるとともに、安価なコストで製作できる。   In this way, the roller 6 can be arranged only in the two outriggers 4b arranged at the rear instead of the ground plate 5 provided at the lower end, and when working while the work vehicle is traveling, the two outriggers 4b at the rear are arranged. Since the roller 6 is disposed at the lower end and only the two outriggers 4b are extended so that the wheels are not lifted, the working vehicle is supported on the ground by the roller 6 so that the vehicle 1 is driven. Even if the ground is uneven, the front load of the work vehicle is supported only by the front wheel 2 (a jack with a roller is not disposed at the front). Therefore, even if the front wheel 2 is located in the concave portion, the front wheel 2 does not float in the air in the concave portion and idles, so that the work vehicle cannot be steered. In addition, since the roller 6 can be arranged only on the two outriggers 4b arranged at the rear instead of the ground plate 5 provided at the lower end, compared with the case where the jack with the roller is arranged separately from the rear outrigger 4b. Thus, the weight of the work vehicle can be reduced and it can be manufactured at a low cost.

しかも車両1の運転席1a直後方の荷台前部位置に旋回駆動可能に旋回台11を配置し、旋回台11の旋回中心と後方アウトリガ4bとの距離を離間させるようにしている(旋回台11の旋回中心を後方に配置する場合に比較して距離を離間させることができる)。よって、作業車両をローラ6で地面に支持させ後輪駆動走行させながら作業する場合に、一般にブーム12を後方に向けて作業させるものであるから、作業範囲を広く取ることができる。すなわち、後方に向けたブーム12の側方への旋回角、ならびに伸長したブーム12の倒伏角度を大きく取れるのである。   In addition, the swivel base 11 is disposed at the front of the loading platform immediately after the driver's seat 1a of the vehicle 1 so as to be capable of being swiveled, and the distance between the swivel center of the swivel base 11 and the rear outrigger 4b is separated (the swivel base 11). The distance can be increased as compared with the case where the center of rotation is disposed rearward). Therefore, when working while the work vehicle is supported on the ground by the roller 6 and driven by the rear wheels, the boom 12 is generally operated with the rear facing the rear, so that the work range can be widened. That is, the turning angle to the side of the boom 12 facing rearward and the falling angle of the extended boom 12 can be increased.

次に、作業車両を停止位置で作業させる際に前後左右に配置した4基のアウトリガ4により作業車両を地面に支持させて作業させるのであるが、後方のアウトリガについては次のようにして接地板5を地面に接地させるようにすればよい。すなわち、図2および図4に図示するように、両各保持アーム62,62をロックピン71の両はみ出し部分71a,71a上に載せ、ローラ6(両各保持アーム62,62)の下動を阻止するようにして、ローラ6の下面を接地板5の下面より高位置に位置させる(ローラ6が上動位置となる)。(図4に実線で図示する状態)
この状態で、前後左右4基のアウトリガ4のジャッキ30に配置した油圧シリンダ33を伸長させ、外筒31より内筒32を伸長させ,車両1を浮上させ、接地板5により車両1を支持させる。(図4に二点鎖線で図示する状態)そして、作業台14に搭乗した作業者はブーム12を適宜伸縮、起伏ならびに旋回台11を旋回させ、作業台14を作業目的位置に移動させ高所作業を行う。
Next, when working the work vehicle at the stop position, the work vehicle is supported on the ground by the four outriggers 4 arranged at the front, rear, left and right. The rear outrigger is operated as follows. What is necessary is just to make 5 earth | ground to the ground. That is, as shown in FIGS. 2 and 4, the holding arms 62 and 62 are placed on the protruding portions 71a and 71a of the lock pin 71, and the roller 6 (both holding arms 62 and 62) is moved downward. The lower surface of the roller 6 is positioned higher than the lower surface of the ground plate 5 so that the roller 6 is blocked (the roller 6 is in the upward movement position). (State shown as a solid line in FIG. 4)
In this state, the hydraulic cylinders 33 arranged on the jacks 30 of the four outriggers 4 in the front, rear, left, and right are extended, the inner cylinder 32 is extended from the outer cylinder 31, the vehicle 1 is levitated, and the vehicle 1 is supported by the ground plate 5 . (The state shown by the two-dot chain line in FIG. 4) Then, the operator who has boarded the work table 14 expands / contracts the boom 12 as appropriate, turns the swivel table 11, and moves the work table 14 to the work target position. Do work.

次に上記実施形態では、ローラ6を一対の保持アーム62,62で保持させるようにしたが、片持ちで保持させるようにしてもよい。以下この場合の実施形態を第2実施形態として図5〜図7に基づいて説明する。   Next, in the above embodiment, the roller 6 is held by the pair of holding arms 62 and 62, but may be held by a cantilever. Hereinafter, an embodiment in this case will be described as a second embodiment with reference to FIGS.

図5〜図7に図示するように、内筒32の下端部内面側において、ローラ6を1枚の保持アーム62で片持ち保持させるようにしている。保持アーム62は、略三角状で、その1つの角部付近を枢軸63で内筒32下端部の内面側側面に枢支している。ローラ6のローラ軸61は、保持アーム62における枢軸63から離間した1つの角部付近に取付けている。そして、保持アーム62は、枢軸63を中心にして、図5に示すローラ6の下面が接地板5の下面より低くなる下動位置と、図7に図示するローラ6の下面が接地板5の下面より高くなる上動位置との間で上下に弧回動させ得るようになっている。   As shown in FIGS. 5 to 7, the roller 6 is cantilevered by one holding arm 62 on the inner surface side of the lower end portion of the inner cylinder 32. The holding arm 62 has a substantially triangular shape, and its one corner is pivotally supported by the pivot 63 on the inner side surface of the lower end portion of the inner cylinder 32. The roller shaft 61 of the roller 6 is attached in the vicinity of one corner portion of the holding arm 62 that is separated from the pivot 63. Then, the holding arm 62 is centered on the pivot 63, and the lower surface of the roller 6 shown in FIG. 5 is lower than the lower surface of the ground plate 5, and the lower surface of the roller 6 shown in FIG. An arc can be turned up and down between the upper moving position which is higher than the lower surface.

また、保持アーム62の残りの角部付近には、ロックピン71を挿通させるピン穴64が形成されている。他方、内筒32の下端部には、ローラ下動位置で保持アーム62のピン穴64に重合するピン穴73と、接地板上動位置で保持アーム62のピン穴と重合するピン穴74とがそれぞれ形成されている。なお、内筒32側の各ピン穴73,74は、それぞれ内筒32を内外方向に貫通しており、ロックピン71の挿入・抜出し作業は内筒32の外面側から行う。   A pin hole 64 through which the lock pin 71 is inserted is formed in the vicinity of the remaining corner of the holding arm 62. On the other hand, at the lower end portion of the inner cylinder 32, a pin hole 73 that overlaps with the pin hole 64 of the holding arm 62 at the roller downward movement position, and a pin hole 74 that overlaps with the pin hole of the holding arm 62 at the movement position on the ground plate Are formed respectively. The pin holes 73 and 74 on the inner cylinder 32 side respectively penetrate the inner cylinder 32 in the inner and outer directions, and the insertion / extraction operation of the lock pin 71 is performed from the outer surface side of the inner cylinder 32.

このように構成した本発明の実施形態では次のように作用する。架線工事するために作業車両をローラ6で地面に支持させ後輪で駆動走行させながら作業する場合について以下に説明する。まず、図5に図示するように、内筒32側の各ピン穴73に保持アーム62のピン穴64を重合させ、各ピン穴にロックピン71を挿通させ、図5に示すローラ6の下面が接地板5の下面より低くなる下動位置の状態にする。(図5および図6に実線で図示した状態)
この状態で、後方アウトリガ4bのジャッキ30の油圧シリンダ33を伸長させ、外筒31より内筒32を伸長させ,ローラ6を地面に接地させる。この時後輪3を浮上させない範囲でローラ6を接地させるように油圧シリンダ33を伸長させる。(図5および図6に二点鎖線で図示した状態)
そして作業台14に搭乗した作業者はブーム12を適宜伸縮、起伏ならびに旋回台11を旋回させ、作業台14を作業目的位置である後方の架線位置に位置させて作業する。そして運転席1aに搭乗した作業者により作業車両を前進させ、作業台14を架線に沿って移動させ、作業台14の作業者により架線に沿って作業を行うのである。
The embodiment of the present invention configured as described above operates as follows. A case where the work vehicle is supported on the ground by the roller 6 and is driven and driven by the rear wheels to perform the overhead line work will be described below. First, as shown in FIG. 5, the pin holes 64 of the holding arm 62 are overlapped in the pin holes 73 on the inner cylinder 32 side, and the lock pins 71 are inserted into the pin holes, so that the lower surface of the roller 6 shown in FIG. Is in a state of a downward movement position where the height is lower than the lower surface of the ground plate 5. (The state shown by solid lines in FIGS. 5 and 6)
In this state, the hydraulic cylinder 33 of the jack 30 of the rear outrigger 4b is extended, the inner cylinder 32 is extended from the outer cylinder 31, and the roller 6 is grounded to the ground. At this time, the hydraulic cylinder 33 is extended so that the roller 6 is grounded within a range where the rear wheel 3 is not lifted. (The state shown by the two-dot chain line in FIGS. 5 and 6)
Then, the worker who has boarded the work table 14 works by expanding and contracting the boom 12 and raising / lowering the swivel table 11 as appropriate, and turning the work table 14 at the rear overhead line position as the work target position. Then, the work vehicle is moved forward by the worker who has boarded the driver's seat 1a, the work table 14 is moved along the overhead line, and the worker on the work table 14 performs the work along the overhead line.

このように、後方に配置した2基のアウトリガ4bにのみ下端に備えた接地板5に替えてローラ6を配置可能にし、作業車両を走行させながら作業する際には後方2基のアウトリガ4bの下端にローラ6を配置させこの2基のアウトリガ4bのみを車輪を浮上させない範囲で張出し作業車両をローラ6で地面に支持させ車両1を駆動走行するようにしたものであるから、走行させる際の地面が凹凸であっても作業車両の前部負荷は前輪2でしか支持しない(前部にローラ付のジャッキを配置していない)。よって前輪2が凹部に位置しても、前輪2が凹部で宙に浮いて空転することはなく、作業車両の操舵が不能になることはない。しかも後方に配置した2基のアウトリガ4bにのみ下端に備えた接地板5に替えてローラ6を配置可能にしたものであるから、後方のアウトリガ4bとは別にローラ付ジャッキを配置する場合と比較して作業車両の重量を軽減させることができるとともに、安価なコストで製作できる。   In this way, the roller 6 can be arranged only in the two outriggers 4b arranged at the rear instead of the ground plate 5 provided at the lower end, and when working while the work vehicle is traveling, the two outriggers 4b at the rear are arranged. Since the roller 6 is disposed at the lower end and only the two outriggers 4b are extended so that the wheels are not lifted, the working vehicle is supported on the ground by the roller 6 so that the vehicle 1 is driven. Even if the ground is uneven, the front load of the work vehicle is supported only by the front wheel 2 (a jack with a roller is not disposed at the front). Therefore, even if the front wheel 2 is located in the concave portion, the front wheel 2 does not float in the air in the concave portion and idles, so that the work vehicle cannot be steered. In addition, since the roller 6 can be arranged only on the two outriggers 4b arranged at the rear instead of the ground plate 5 provided at the lower end, compared with the case where the jack with the roller is arranged separately from the rear outrigger 4b. Thus, the weight of the work vehicle can be reduced and it can be manufactured at a low cost.

しかも車両1の運転席1a直後方の荷台前部位置に旋回駆動可能に旋回台11を配置し、旋回台11の旋回中心と後方アウトリガ4bとの距離を離間させるようにしている。(旋回台11の旋回中心を後方に配置する場合に比較して距離を離間させることができる。)よって、作業車両をローラ6で地面に支持させ後輪駆動走行させながら作業する場合に、一般にブーム12を後方に向けて作業させるものであるから、作業範囲を広く取ることができる。すなわち、後方に向けたブーム12の側方への旋回角、ならびに伸長したブーム12の倒伏角度を大きく取れるのである。   Moreover, the swivel base 11 is disposed at the front of the loading platform immediately after the driver's seat 1a of the vehicle 1 so as to be capable of being swiveled, and the distance between the swivel center of the swivel base 11 and the rear outrigger 4b is separated. (The distance can be increased as compared with the case where the turning center of the turntable 11 is disposed rearward.) Therefore, when the work vehicle is supported by the roller 6 on the ground and is driven while driving the rear wheels, Since the work is performed with the boom 12 facing backward, the working range can be widened. That is, the turning angle to the side of the boom 12 facing rearward and the falling angle of the extended boom 12 can be increased.

次に、作業車両を停止位置で作業させる際に前後左右に配置した4基のアウトリガ4により作業車両を地面に支持させて作業させるのであるが、後方のアウトリガ4bについては次のようにして接地板5を地面に接地させるようにすればよい。すなわち、図7に図示するように、ローラ6の下面が接地板5の下面より高くなる上動位置状態となるように、保持アーム62のピン穴64と内筒32のピン穴74とを重合させ、ロックピン71を各ピン穴に挿通させる。そしてローラ6の下面を接地板5の下面より高位置に位置させる(ローラ6が上動位置となる)。(図7に実線で図示した状態)
この状態で、前後左右4基のアウトリガ4のジャッキ30に配置した油圧シリンダ33を伸長させ、外筒31より内筒32を伸長させ,車両1を浮上させ、接地板5により車両1を支持させる。(図7に二点鎖線で図示した状態)そして、作業台14に搭乗した作業者はブーム12を適宜伸縮、起伏ならびに旋回台11を旋回させ、作業台14を作業目的位置に移動させ高所作業を行う。
Next, when the work vehicle is operated at the stop position, the work vehicle is supported on the ground by the four outriggers 4 arranged at the front, rear, left, and right. The rear outrigger 4b is contacted as follows. The ground plane 5 may be grounded to the ground. That is, as shown in FIG. 7, the pin hole 64 of the holding arm 62 and the pin hole 74 of the inner cylinder 32 are overlapped so that the lower surface of the roller 6 is in the upward movement state where the lower surface of the ground plate 5 is higher. The lock pin 71 is inserted into each pin hole. Then, the lower surface of the roller 6 is positioned higher than the lower surface of the ground plate 5 (the roller 6 is in the upward movement position). (The state shown by the solid line in FIG. 7)
In this state, the hydraulic cylinders 33 arranged on the jacks 30 of the four outriggers 4 in the front, rear, left, and right are extended, the inner cylinder 32 is extended from the outer cylinder 31, the vehicle 1 is levitated, and the vehicle 1 is supported by the ground plate 5 . (The state shown by the chain double-dashed line in FIG. 7) Then, the operator who has boarded the work table 14 expands / contracts the boom 12 appropriately, turns the swivel table 11, and moves the work table 14 to the work target position. Do work.

なお、上記実施形態では、後方に配置した2基のアウトリガにのみに下端に備えた接地板5に替えてローラ6を配置するに当たり、ローラ6を保持アーム62で内筒32に揺動せて、ローラ6の下面が接地板5の下面より低くなる下動位置状態と、ローラ6の下面が接地板5の下面より高くなる上動位置状態とに位置させるようにしたが、逆に内筒32の下端にローラ6を配置し、接地板5を内筒32の下端部で揺動させて、接地板5の下面がローラ6の下面より低くなる下動位置状態と、接地板5の下面がローラ6の下面より高くなる上動位置状態とに位置させるようにしてもよい。   In the above embodiment, when the roller 6 is disposed in place of the ground plate 5 provided at the lower end only for the two outriggers disposed rearward, the roller 6 is swung to the inner cylinder 32 by the holding arm 62. The lower surface of the roller 6 is positioned lower than the lower surface of the ground plate 5 and the upper position of the roller 6 is higher than the lower surface of the ground plate 5. The roller 6 is disposed at the lower end of the roller 32, the ground plate 5 is swung at the lower end of the inner cylinder 32, and the lower surface of the ground plate 5 is lower than the lower surface of the roller 6. May be positioned in the upward movement position state where the height of the roller 6 is higher than the lower surface of the roller 6.

また、保持アーム62の揺動は手動で行うものとして上記は説明したが、油圧シリンダ当を介在させ自動で揺動させるようにしたものであってもよい。   Further, the above description has been made on the assumption that the holding arm 62 is swung manually. However, the holding arm 62 may be swung automatically by interposing a hydraulic cylinder stopper.

上記実施形態の説明では、作業機Aとして車両1上に旋回台11を旋回可能に配置するとともに伸縮、起伏可能にブーム12を配置し、ブーム12の先端部に作業台14を配置した作業車両として高所作業車を例に説明したが、同様な構成となっている橋梁点検車やクレーン等にも適用できること勿論のことである。   In the description of the above embodiment, the working vehicle A is the working vehicle in which the swivel base 11 is disposed on the vehicle 1 so as to be turnable, the boom 12 is disposed so as to be able to expand and contract, and the work table 14 is disposed at the tip of the boom 12. As an example, an aerial work vehicle has been described as an example, but it is needless to say that the present invention can also be applied to a bridge inspection vehicle, a crane, or the like having the same configuration.

本発明に係る作業車両を説明する説明図である。It is explanatory drawing explaining the work vehicle which concerns on this invention. 本発明に係る作業車両で、ローラで支持させる状態を斜視図で説明する説明図である。It is explanatory drawing explaining the state supported with a roller with the work vehicle which concerns on this invention with a perspective view. 本発明に係る作業車両で、ローラで支持させる状態を説明する説明図である。It is explanatory drawing explaining the state made to support with a roller in the working vehicle which concerns on this invention. 本発明に係る作業車両で、接地板で支持させる状態を説明する説明図である。It is explanatory drawing explaining the state made to support with the grounding plate with the work vehicle which concerns on this invention. 本発明に係る第2実施形態の作業車両で、ローラで支持させる状態を説明する説明図である。It is explanatory drawing explaining the state made to support with a roller in the work vehicle of 2nd Embodiment which concerns on this invention. 図5の右側面図である。FIG. 6 is a right side view of FIG. 5. 本発明に係る第2実施形態の作業車両を説明する説明図で、接地板で支持させる状態を説明する説明図である。It is explanatory drawing explaining the work vehicle of 2nd Embodiment which concerns on this invention, and is explanatory drawing explaining the state made to support with a ground plate.

符号の説明Explanation of symbols

1 車両
2 前輪
3 後輪
4 アウトリガ
5 接地板
6 ローラ
11 旋回台
12 ブーム
A 作業機
1 Vehicle 2 Front Wheel 3 Rear Wheel 4 Outrigger 5 Grounding Plate 6 Roller 11 Swivel Table 12 Boom A Working Machine

Claims (2)

車両上に作業機を搭載するとともに車両の前後左右位置にそれぞれ下端に接地板を備え作業車両を地面に支持させるアウトリガを4基配置し、当該後方に配置した2基のアウトリガにのみ下端に備えた接地板に替えてローラを配置可能にし、作業車両を停止位置で作業する際には前後4基の各アウトリガの接地板を地面に接地させて作業車両を支持させ、作業車両を走行させながら作業する際には後方2基のアウトリガの下端にローラを配置させこの2基のアウトリガのみを車輪を浮上させない範囲で張出し作業車両をローラで地面に支持させ車両を駆動走行するようにしたことを特徴とする作業車両。 Four outriggers are mounted on the vehicle and equipped with a grounding plate at the lower end at each of the front, rear, left and right positions of the vehicle to support the work vehicle on the ground, and only two outriggers arranged at the rear are provided at the lower end. The roller can be arranged in place of the grounding plate, and when the work vehicle is operated at the stop position, the grounding plates of the four front and rear outriggers are grounded to the ground to support the work vehicle, When working, a roller is arranged at the lower end of the two rear outriggers, and only the two outriggers are extended so that the wheels are not lifted. The working vehicle is supported on the ground by the rollers and the vehicle is driven. Feature work vehicle. 前記作業機は、車両の運転席直後方の荷台前部位置に旋回可能な旋回台と、旋回台に取付けたブームとを備えて構成していることを特徴とする請求項1記載の作業車両。 2. The work vehicle according to claim 1, wherein the work machine includes a swivel that can be swiveled at a position in front of the loading platform immediately after the driver's seat of the vehicle, and a boom that is attached to the swivel. 3. .
JP2005171715A 2005-06-10 2005-06-10 Work vehicle Expired - Fee Related JP5058453B2 (en)

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