JPH02117599A - Altitude working vehicle - Google Patents
Altitude working vehicleInfo
- Publication number
- JPH02117599A JPH02117599A JP25347089A JP25347089A JPH02117599A JP H02117599 A JPH02117599 A JP H02117599A JP 25347089 A JP25347089 A JP 25347089A JP 25347089 A JP25347089 A JP 25347089A JP H02117599 A JPH02117599 A JP H02117599A
- Authority
- JP
- Japan
- Prior art keywords
- boom
- telescopic boom
- vehicle
- cylinder
- expandable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003028 elevating effect Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000008602 contraction Effects 0.000 abstract description 3
- 238000007689 inspection Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 4
- 239000004677 Nylon Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Forklifts And Lifting Vehicles (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
未発明は、昇降台を上下動させて人員、資材を高所に持
ちとげることができる高所作業車に間し、特に、伸縮す
る機構を簡易に構成することができ、構成要素を極力少
なくさせることができる高所作Ｔ８巾に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an aerial work vehicle that can lift personnel and materials to a high place by moving a lifting platform up and down, and in particular, a mechanism that expands and contracts. This invention relates to a T8-width machine that can be easily constructed and has as few components as possible.
′従来の技術〕
高速道路、ビル建築等の高所における組立て、塗装、修
理等の作業には昇降台を昇隣させる高所作業車が多く用
いられ、この昇降台に作業員、資材を載せて持ち上げた
り、降下させて作業させていた。``Conventional technology] For assembly, painting, repair, and other work in high places such as highways and building construction, aerial work vehicles that have a lifting platform raised next to each other are often used, and workers and materials are placed on this lifting platform. They had to lift it up and lower it to work.
この従来の高所作業車においては、一対のアームをその
中央で軸着して一組とし、複数組のアームを上下方向に
連結したパンタグラフ状の伸縮機構が用いられている（
いわゆるシザースタイプ）。In this conventional aerial work vehicle, a pair of arms are pivoted at the center to form one set, and a pantograph-like extension and contraction mechanism is used in which multiple sets of arms are connected in the vertical direction (
so-called scissor type).
このａ構では、昇降台の最大上昇高さを高くするために
は各アームの長さを長くするが、上下に組み立てるアー
ムの組数を多くしなければならないものであった。この
ため、上昇高さの高い高所作業車を設計すると、多数組
のパンタグラフを用いなければならず、伸縮機構を折り
畳んだ状態での昇降台の高さが高くなり、作業員が昇降
台に乗り降りしたり、資材を積込み積陣ろしする作業が
煩わしいものであった。In this structure A, the length of each arm is increased in order to increase the maximum lifting height of the platform, but it is necessary to increase the number of sets of arms assembled vertically. For this reason, if an aerial work vehicle with a high lifting height is designed, multiple sets of pantographs must be used, and the height of the platform with the telescoping mechanism folded will be high, making it difficult for workers to climb the platform. The work of getting on and off the vehicle and loading and unloading materials was cumbersome.
このため、アームの内部に複数のブームを伸縮自在に挿
入して、一つのアームがその長さ方向に伸張できるよう
に構成した高所作業車も案出されている（例えば特願昭
５６年第１３４４８７号、特１９Ｍ昭５６年第１９１０
６５号など）。この新しく従案された高所作業車では、
二個−組のブームをその中心で回動自在にＸ字形に組合
せ、二組のブーム体に並列に配置して４木の上アームと
下アームによって車体と昇降台を連結させていた。この
ため、高所作業車に必要とされるブームの使用本数が多
くならざるを得す、構成部材の点数が極めて多くなり、
製造組立てが煩雑となり、価格も高くなるものであった
。また、各アームがブームに対して摺動するため、ブー
ムとアームの摺動点が極めて多くなる。この摺動点の円
滑化のため、通常この摺動点にはＭＣナイロン等の摺動
部品を取り付けておくため、定期的に摺動部品を取り替
えるなければならず、点検、整備に費用が係るとともに
作業が煩わしいものであった。For this reason, an aerial work vehicle has been devised in which a plurality of booms are telescopically inserted into the inside of the arm so that one arm can be extended in the length direction (for example, No. 134487, Special 19M 1982 No. 1910
65 etc.). With this newly developed aerial work vehicle,
Two sets of booms were assembled in an X-shape so that they could rotate freely at the center, and were arranged in parallel to the two sets of boom bodies, and the vehicle body and lifting platform were connected by an upper arm and a lower arm of four pieces of wood. For this reason, the number of booms required for aerial work vehicles has to increase, and the number of component parts has become extremely large.
Manufacturing and assembly were complicated and the price was high. Furthermore, since each arm slides relative to the boom, the number of sliding points between the boom and the arm is extremely large. In order to smooth this sliding point, sliding parts such as MC nylon are usually attached to this sliding point, so the sliding parts must be replaced periodically, which increases the cost of inspection and maintenance. The work was also troublesome.
［発明が解決しようとする問題点］
本発明は上述の欠点に鑑み、伸縮するブームを一本とし
、高所作業車の構成を簡易にして製造、点検が容易な高
所作業車を提供するものである６〔問題点を解決するた
めの手段］
本発明では、車輌、その最縮小状態における全長が、車
輌のフレームの全長と略同長の伸縮ブームであって、そ
の基端部を前記車輌のフレームの前後方向一端部に立設
したブラケットに車輌の前後方向に直交する水平支軸を
介して起伏自在に枢支連結したブーム、その全長および
全幅が夫々車輌のそれと略同一に形成された作業台であ
って、その長手方向一端部において下側に延出配設した
ブラケットを、伸縮ブームの起伏軌跡面に直交する水平
支軸を介して前記伸縮ブームの先端部に枢着連結され、
その倒伏状態では全体として伸縮ブームの背面上に位置
するように構成した作業台、前記伸縮ブームと車輌のフ
レームの適所間に介装され伸縮ブームを起伏駆動する伸
縮ブーム起伏用油圧シリンダ、および、前記伸縮ブーム
と作業台の適所間に介装され作業台を伸縮ブームの起伏
動にかかわりな（常に水平に保つよう機能するレベリン
グシリンダとからなる高所作業車を提供するものである
。[Problems to be Solved by the Invention] In view of the above-mentioned drawbacks, the present invention provides an aerial work vehicle that has a single telescoping boom, simplifies the structure of the aerial work vehicle, and is easy to manufacture and inspect. 6 [Means for Solving the Problems] The present invention provides a telescopic boom whose total length in its most contracted state is approximately the same as the total length of the frame of the vehicle, and whose base end is A boom is pivotably connected to a bracket erected at one end of the vehicle frame in the longitudinal direction via a horizontal support shaft orthogonal to the longitudinal direction of the vehicle, and the entire length and width of the boom are each approximately the same as that of the vehicle. The workbench is provided with a bracket extending downward from one longitudinal end of the workbench, the bracket being pivotally connected to the tip of the telescopic boom via a horizontal support shaft perpendicular to the undulating locus plane of the telescopic boom. ,
a workbench configured to be positioned entirely on the back surface of the telescopic boom in its laid down state; a hydraulic cylinder for hoisting the telescopic boom that is interposed between the telescopic boom and the frame of the vehicle at a suitable position and drives the telescopic boom to raise and lower; The present invention provides an aerial work vehicle comprising a leveling cylinder which is interposed between the telescopic boom and the working platform at a suitable location and functions to keep the working platform horizontal at all times, regardless of the raising and lowering movements of the telescopic boom.
本発明では、伸縮ブーム体が伸縮すると同時に俯仰用の
油圧シリンダーと角度補正用の油圧シリンダーが動作し
、伸縮ブーム体が車体に対して俯仰され、同時に角度補
正用の油圧シリンダーが昇降台の開角度を変動させて昇
降台を常に水平になるように維持することができる。こ
の構成では、昇降台を支えるテレスコピック状の伸縮ブ
ーム体は一本であり、各ブームが摺動する際に円滑化を
計るために設けた摺動部材の使用点数が少なくなる。In the present invention, the hydraulic cylinder for elevating and elevating and the hydraulic cylinder for angle correction operate at the same time as the telescopic boom body expands and contracts, so that the telescopic boom body is elevated relative to the vehicle body, and at the same time, the hydraulic cylinder for angle correction operates to open the platform. By varying the angle, the platform can be kept horizontal at all times. In this configuration, there is only one telescopic boom body supporting the lifting platform, and the number of sliding members provided to ensure smooth sliding of each boom is reduced.
以下、本発明の一実ｈ１１例を図面により説明する。 Hereinafter, an example h11 of the present invention will be explained with reference to the drawings.
ｊＪｉ体１０前後左右にはそれぞれ前輪２と後輪３が軸
支してあり、車体１が自由に移動できる構成となってお
り、車体ｌの下部にはエンジン、油圧ポンプ等を収納し
た源動箱４が取り付けである。A front wheel 2 and a rear wheel 3 are pivoted on the front, rear, left and right sides of the jJi body 10, respectively, and the car body 1 is configured to be able to move freely.The lower part of the car body 1 is equipped with a power source housing the engine, hydraulic pump, etc. Box 4 is for installation.
この車体ｌの上部には一本の伸縮ブーム体５が位置させ
である。この伸縮ブーム体５は三つの元ブーム６、中間
ブーム７、先ブーム８より成り、それぞれ断面が四角形
をした内部空間の角パイプ状をしている。元ブーム６の
断面形状は中間ブー１．７より大きく、中間ブーム７の
断面形状は先ブーム８より大きく、先ブーム８は中間ブ
ーム７に１Ｍ動自在に挿入され、中間ブーム７は元ブー
ム６に摺動自在に挿入され、各ブーム６〜８はその長さ
方向に沿ってテレスコピック状に伸縮できるように構成
しである６元プーム６内には油圧シリンダー３０が収納
してあり、この油圧シリンダー３０により伸縮ブーム体
５は長さ方向に伸縮される。前記車体ｌの上面であって
後輪３例の端部中央付近には、間隔を置いて一対の軸支
片９が固着してあり、両輪支片９の間には元プーム６の
基部が挿入してあり、元プーム６と軸支片９とはビンｌ
Ｏによって上下に回動自在に連結しである。A telescoping boom body 5 is positioned at the top of the vehicle body 1. The telescopic boom body 5 consists of three main booms 6, intermediate booms 7, and front booms 8, each of which is shaped like a rectangular pipe with an internal space having a square cross section. The cross-sectional shape of the original boom 6 is larger than the intermediate boom 1.7, the cross-sectional shape of the intermediate boom 7 is larger than the front boom 8, the front boom 8 is inserted into the intermediate boom 7 so as to be movable by 1M, and the intermediate boom 7 is A hydraulic cylinder 30 is housed in the six-boom 6, and each boom 6 to 8 is configured to telescopically expand and contract along its length. The telescopic boom body 5 is extended and contracted in the length direction by the cylinder 30. A pair of shaft support pieces 9 are fixed at intervals on the upper surface of the vehicle body 1 near the center of the end of the three rear wheels, and between the two wheel support pieces 9 the base of the base pool 6 is fixed. The former poom 6 and the shaft support piece 9 are inserted into the bottle l.
It is connected by O so that it can rotate up and down.
次に、１１は作業員が搭乗する昇降台であり、昇降台１
１の下面であってその前側（前輪２側）の中央には一対
の軸支片１２が間隔を置いて固着してあり、両軸支片１
２の間には先プーム８の先端が挿入してあり、先ブーム
８と軸支片１２とはビン１３により上下に回動自在に連
結しである。そして、昇降台１１の上面の周囲には手摺
り１４が起立させ°ζある。Next, reference numeral 11 is a lifting platform on which workers board, and lifting platform 1
A pair of shaft support pieces 12 are fixed to the center of the front side (front wheel 2 side) of the lower surface of the 1 at a distance, and both shaft support pieces 1
The tip of the tip boom 8 is inserted between the two, and the tip boom 8 and the shaft support piece 12 are connected by a pin 13 so as to be vertically rotatable. A handrail 14 is erected around the upper surface of the elevator platform 11.
前記車体ｌのやや中央の左右側部にはそれぞれ連結片１
５が突起させてあり、元プーム６の先端左右両側にもそ
れぞれ連結片１６が固着しである。これらの連結片１５
．１６にはボールジヨイント３１．３２が連結してあり
、両ポールジョイン１−３１．３２間にはそれぞれ持ち
上げシリンダー１７が介在させである。このため、両持
ち上げシリンダー１７はボールジヨイント３１．３２に
よっていずれの方向にも同曲できるよう接続されている
。そして、昇降台１１の下面であって、軸支片１２と反
対側の左右両側にはそれぞ連結片１８が固着してあり、
中間ブーム７の先端の左右両側にもそれぞれ連結片１９
が固着しである。これらの連結片１８．１９にはボール
ジヨイント３３°、３４が連結してあり、両ボールジヨ
イント３３．３４間にはそれぞれ修正シリンダー２０が
介在させである。このため、修正シリンダー２０はボー
ルジヨイント３３．３４によっていずれの方向にも同曲
できるよう接続されている。Connecting pieces 1 are provided on the left and right sides of the vehicle body l, slightly in the center.
5 is projected, and connecting pieces 16 are fixed to both left and right sides of the tip of the base pool 6, respectively. These connecting pieces 15
．． Ball joints 31 and 32 are connected to the pole joints 1 and 16, and lifting cylinders 17 are interposed between the two pole joints 1 and 31 and 32, respectively. For this purpose, both lifting cylinders 17 are connected by ball joints 31, 32 so that they can be bent in the same direction in either direction. Connecting pieces 18 are fixed to the lower surface of the lifting platform 11 on both left and right sides opposite to the shaft supporting piece 12, respectively.
Connecting pieces 19 are also provided on both left and right sides of the tip of the intermediate boom 7.
is fixed. Ball joints 33 and 34 are connected to these connecting pieces 18 and 19, and correction cylinders 20 are interposed between both ball joints 33 and 34, respectively. For this purpose, the correction cylinder 20 is connected by ball joints 33, 34 so that it can bend in either direction.
上記の構成により、本実施例の高所作業車は車体ｌ、伸
縮ブーム体５、昇降台１１によって側面から視て２字形
に構成されている。そして、持ち上げシリンダー１７は
車体１方向に向けて下方に広がるように八字形に拡大す
るよう位置されており、修正シリンダー２０は昇降台１
１方向に向けて上方に広がるように八字形に拡大するよ
うに位置されている。With the above configuration, the aerial work vehicle of this embodiment has a two-shape structure including the vehicle body 1, the telescopic boom body 5, and the lifting platform 11 when viewed from the side. The lifting cylinder 17 is positioned so as to expand downward in a figure-eight shape toward the vehicle body 1, and the correction cylinder 20 is located at the lifting platform 1.
It is positioned so as to expand upward in one direction in a figure-eight shape.
次に、第６図は前記伸縮ブーム体５の内部構造を示す断
面図である。Next, FIG. 6 is a sectional view showing the internal structure of the telescopic boom body 5. As shown in FIG.
元ブーム６には中間ブーム７が挿通され、中間ブーム７
には先プーム８が挿通され、先プーム８内は空洞となっ
ており、この空間内に油圧シリンダー３０が位置させで
ある。元ブーム６の内部の基部には固定片３５が固着し
てあり、中間ブーム７の内部の基部には固定片３６が固
着してあり、固定片３５には油圧シリンダー３０のロン
ドが連結してあり、固定片３６には油圧シリンダー３０
の本体が固着しである。また、中間ブーム７の先端−側
にはプーリー３７．３８が軸支してあり、このプーリー
３７．３８には同調用のワイヤー３９が巻き廻してあり
、ワイヤー３９の一端は先ブーム８の基部に連結してあ
り、ワイヤー３９の他端は元プーム６の上端に連結しで
ある。An intermediate boom 7 is inserted into the original boom 6.
A tip poom 8 is inserted through the tip poom 8, and the inside of the tip poom 8 is hollow, and a hydraulic cylinder 30 is positioned within this space. A fixed piece 35 is fixed to the inner base of the original boom 6, a fixed piece 36 is fixed to the inner base of the intermediate boom 7, and the rond of the hydraulic cylinder 30 is connected to the fixed piece 35. There is a hydraulic cylinder 30 on the fixed piece 36.
The main body is stuck. Further, pulleys 37 and 38 are pivotally supported on the tip side of the intermediate boom 7, and a tuning wire 39 is wound around this pulley 37 and 38, and one end of the wire 39 is connected to the base of the tip boom 8. The other end of the wire 39 is connected to the upper end of the base pool 6.
また、第７図は本実施例の油圧回路を示すものである。Further, FIG. 7 shows the hydraulic circuit of this embodiment.
エンジン４０によって駆動される油圧ポンプ４１の吸入
側はオイルタンク４２に接続されており、油圧ポンプ４
１の吐出側４３は切換弁４５に接続され、切換弁４５の
排出側４４はオイルタンク４２に接続されている。この
切換弁４５は三方切換型弁であり、この切換弁４５の一
方には前記両持ち上げシリンダー１７．１７に並列に接
続されており、この持ち上げシリンダー１７．１７の吐
出側には修正シリンダー２０．２０に並列に接続されて
おり、両修正シリンダー２０．２０叶出側は切換弁４５
の他方に接続されている。また、切換弁４５には油圧シ
リンダー３０が接続されている。A suction side of a hydraulic pump 41 driven by an engine 40 is connected to an oil tank 42, and the hydraulic pump 41 is connected to an oil tank 42.
The discharge side 43 of the switching valve 45 is connected to the switching valve 45, and the discharge side 44 of the switching valve 45 is connected to the oil tank 42. This switching valve 45 is a three-way switching valve, and one side of this switching valve 45 is connected in parallel to the two lifting cylinders 17.17, and the correction cylinder 20. 20 are connected in parallel, and both correction cylinders 20 and 20 have a switching valve 45 on the outlet side.
connected to the other. Further, the hydraulic cylinder 30 is connected to the switching valve 45 .
次に、本実施例の作用を説明する。Next, the operation of this embodiment will be explained.
第２図、第３図は伸縮ブーム体５を縮小して昇降台１１
を最下位置に降下した状態を示すもので、この状態で昇
降台１１上に作業員が搭乗するとともに資材を載置して
昇降台１１を上昇させる。Figures 2 and 3 show the lifting platform 11 with the telescopic boom body 5 reduced.
This figure shows the state in which the platform has been lowered to the lowest position. In this state, a worker gets on the platform 11, materials are placed on it, and the platform 11 is raised.
昇降台１１を上昇させるには源動箱４内にあるエンジン
４０を作動させて油圧ポンプ４１で油圧を発生させ、元
プーム６内の油圧シリンダー３０、持ち上げシリンダー
１７、修正シリンダー２０に油圧を供給することで開始
される。先ず、切換弁４５を正方向に切り換えると、油
圧が油圧シリンダー３０、持ち上げシリンダー１７、修
正シリンダー２０に供給され、各シリンダー３０．１７
．２０はその長さを伸長させる。To raise the lifting platform 11, the engine 40 in the power supply box 4 is activated to generate hydraulic pressure with the hydraulic pump 41, and the hydraulic pressure is supplied to the hydraulic cylinder 30, lifting cylinder 17, and correction cylinder 20 in the base pool 6. It is started by doing. First, when the switching valve 45 is switched in the positive direction, hydraulic pressure is supplied to the hydraulic cylinder 30, the lifting cylinder 17, and the correction cylinder 20, and each cylinder 30.17
．． 20 extends its length.
油圧シリンダ−３０が伸びると、中間ブーム７は元プー
ム６より摺動し、プーリー３７はワイヤー３９を押し上
げる。このワイヤー３９の末端は元ブーム６に固定され
ているので、ワイヤー３９は先プーム８を引き上げるこ
とになり、中間プーム７、先ブーム８は元ブーム６に対
して摺動し、伸縮ブーム体５は全長を伸ばすことになる
。この伸縮ブーム体５の伸長により、ビンｌＯと１３の
距離が拡大される。When the hydraulic cylinder 30 is extended, the intermediate boom 7 slides from the base boom 6, and the pulley 37 pushes up the wire 39. Since the end of this wire 39 is fixed to the base boom 6, the wire 39 will pull up the front boom 8, and the intermediate boom 7 and the front boom 8 will slide against the base boom 6, and the telescopic boom body 5 will increase the total length. By this extension of the telescopic boom body 5, the distance between the bins 10 and 13 is increased.
同時に、持ち上げシリンダー１７にも油圧が供給され、
その長さが伸びてビンＩＯを中心にして元ブーム６を俯
仰させ、伸縮ブーム体５を車体１に対して傾斜させるよ
うに持ち上げる。この伸縮ブーム体５における中間ブー
ム７、先ブーム８の伸長速度と持ち上げシリンダー１７
による元プーム６の傾動速度を同調させると先プーム８
のビン１３はやや垂直に上昇することになる。また、持
ち上げシリンダー１７の油圧の吐出側には修正用シリン
ダー２０が接続しであるため、同時に修正用シリンダー
２０も伸長し、昇降台１１と先プーム８によって形成さ
れた開角度を拡大させるよう作用する。しかも、持ち上
げシリンダー１７と修正用シリンダー２０は直列に接続
しであるために、両者の伸縮情は同一となるので、車体
１と伸縮ブーム体５の開角度と伸縮ブーム体５と昇降台
１１の開角度が同一となり、車体ｌと岑降台１１は常に
平行に保持される。At the same time, hydraulic pressure is also supplied to the lifting cylinder 17,
Its length is extended, and the former boom 6 is lifted up and down with the bin IO as the center, and the telescopic boom body 5 is lifted so as to be inclined with respect to the vehicle body 1. The extension speed of the intermediate boom 7 and the front boom 8 in this telescopic boom body 5 and the lifting cylinder 17
By synchronizing the tilting speed of the former pool 6, the tilting speed of the former pool 8
The bin 13 will rise slightly vertically. In addition, since the correction cylinder 20 is connected to the hydraulic pressure discharge side of the lifting cylinder 17, the correction cylinder 20 also extends at the same time, and acts to expand the opening angle formed by the lifting platform 11 and the tip pool 8. do. Moreover, since the lifting cylinder 17 and the correction cylinder 20 are connected in series, the expansion and contraction conditions of both are the same. The opening angles are the same, and the vehicle body l and the lowering platform 11 are always held parallel.
ｈ、降台１１が所定の高さ位置まで上昇したならば、切
換弁４５を中立に復帰させると各シリンダー１７．２０
．３０はその作動を停止し、昇降台１１はその高さ位置
に保持され、高所での組立て、修理、塗装等の作業を行
うことができる。h. When the descending platform 11 has risen to a predetermined height position, the switching valve 45 is returned to neutral, and each cylinder 17.20
．． 30 stops its operation, and the lifting platform 11 is held at that height position, allowing work such as assembly, repair, painting, etc. to be performed at a high location.
昇降台１１を下降させるには前述とは逆に、切換弁４５
を逆向きに切り換えることで、前記の手順とは反対の順
序で各シリンダー１７．２０．３０は縮小し、１Ｒ１降
台１１は水平を保ちながら降下する。To lower the elevator platform 11, contrary to the above, the switching valve 45 is
By switching in the opposite direction, each cylinder 17, 20, 30 contracts in the opposite order to the above procedure, and the 1R1 descending platform 11 descends while remaining horizontal.
本発明は上述の様に構成したので、伸縮するブーム体を
一本だけ用いて昇降台を上下動させることができ、製造
、組立てが容易で安価となる。また、摺動点が少なくな
るため、ＭＣナイロン等の摺動部材の使用点数を少なく
することができ、使用中における保守、点検が蒲易とな
るものである。Since the present invention is configured as described above, the lifting platform can be moved up and down using only one telescoping boom body, making manufacturing and assembly easy and inexpensive. Furthermore, since there are fewer sliding points, the number of sliding members such as MC nylon used can be reduced, making maintenance and inspection easier during use.
第１図は本発明の一実施例を示す斜視図、第２図は昇降
台を最下位置に降下した状態を示す側面図、第３図は同
上の正面図、第４図は昇降台を最上位置に上昇させた状
態を示す側面図、第５図は同上の正面図、第６図は伸縮
ブーム体の内部構造を示す断面図、第７図は油圧系統を
示す配管図である。
ｌ・・・車体、５・・・伸縮ブーム体、６・・・元ブー
ム、７・・・中間ブーム、８・・・先ブーム、１１・・
・昇降台、１７・・・持ら上げシリンダー、２０・・・
修正シリンダー、３０・・・油圧シリンダー
第２図
４、？許出願人 株式会社 彦間製作所代理人 弁理
士 日 比 惺 明
第
図
第
図Fig. 1 is a perspective view showing an embodiment of the present invention, Fig. 2 is a side view showing the elevating platform lowered to the lowest position, Fig. 3 is a front view of the same, and Fig. 4 is the elevating platform shown in the lowermost position. 5 is a front view of the same as above, FIG. 6 is a sectional view showing the internal structure of the telescopic boom body, and FIG. 7 is a piping diagram showing the hydraulic system. l... Vehicle body, 5... Telescopic boom body, 6... Original boom, 7... Intermediate boom, 8... Front boom, 11...
・Lifting platform, 17... Lifting cylinder, 20...
Correction cylinder, 30...Hydraulic cylinder Fig. 2 4, ? Applicant: Hikoma Seisakusho Co., Ltd. Agent: Patent Attorney: Hibi Hiroaki
Claims (1)
の全長と略同長の伸縮ブームであって、その基端部を前
記車輌のフレームの前後方向一端部に立設したブラケッ
トに車輌の前後方向に直交する水平支軸を介して起伏自
在に枢支連結したブーム、その全長および全幅が夫々車
輌のそれと略同一に形成された作業台であって、その長
手方向一端部において下側に延出配設したブラケットを
、伸縮ブームの起伏軌跡面に直交する水平支軸を介して
前記伸縮ブームの先端部に枢着連結され、その倒伏状態
では全体として伸縮ブームの背面上に位置するように構
成した作業台、前記伸縮ブームと車輌のフレームの適所
間に介装され伸縮ブームを起伏駆動する伸縮ブーム起伏
用油圧シリンダ、および、前記伸縮ブームと作業台の適
所間に介装され作業台を伸縮ブームの起伏動にかかわり
なく常に水平に保つよう機能するレベリングシリンダと
からなる高所作業車。A telescopic boom whose total length in its most contracted state is approximately the same as the total length of the vehicle frame, the base end of which is attached to a bracket that is erected at one end of the vehicle frame in the longitudinal direction of the vehicle. A workbench having a boom pivotably connected to the boom via a horizontal support shaft orthogonal to the vehicle, the overall length and width of which are approximately the same as those of the vehicle, and extending downward at one end in the longitudinal direction. The provided bracket is pivotally connected to the tip of the telescopic boom via a horizontal support shaft perpendicular to the locus of locus of the telescopic boom, and is configured to be positioned on the back surface of the telescopic boom as a whole when it is in a collapsed state. a hydraulic cylinder for raising and lowering the telescopic boom, which is interposed between the telescopic boom and a suitable position of the vehicle frame, and a hydraulic cylinder for raising and lowering the telescopic boom; An aerial work vehicle consisting of a leveling cylinder that functions to always keep the boom level regardless of whether it moves up or down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25347089A JPH02117599A (en) | 1989-09-28 | 1989-09-28 | Altitude working vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25347089A JPH02117599A (en) | 1989-09-28 | 1989-09-28 | Altitude working vehicle |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1977784A Division JPS60167900A (en) | 1984-02-06 | 1984-02-06 | Elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02117599A true JPH02117599A (en) | 1990-05-02 |
Family
ID=17251834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25347089A Pending JPH02117599A (en) | 1989-09-28 | 1989-09-28 | Altitude working vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02117599A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57107400A (en) * | 1980-12-24 | 1982-07-03 | Kyokuto Kaihatsu Kogyo Co | Extension boom device |
| JPS57166292A (en) * | 1981-03-20 | 1982-10-13 | Mitsuhiro Kishi | Lifting gear |
| JPS5836900A (en) * | 1981-08-26 | 1983-03-03 | 岸 光宏 | Synchronous expansion mechanism for lifting gear |
| JPS5895100A (en) * | 1981-11-28 | 1983-06-06 | 岸 光宏 | Synchronous expansion mechanism of lifting gear |
| JPS58162499A (en) * | 1982-03-18 | 1983-09-27 | 極東開発工業株式会社 | Stretcher for boom of height service car |
| JPS60167900A (en) * | 1984-02-06 | 1985-08-31 | 株式会社彦間製作所 | Elevator |
| JPS60232400A (en) * | 1984-05-01 | 1985-11-19 | 株式会社ジャパニック | Elevator for height service car |
| JPS60236999A (en) * | 1984-05-08 | 1985-11-25 | 株式会社ジャパニック | Boom type lifting gear |
-
1989
- 1989-09-28 JP JP25347089A patent/JPH02117599A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57107400A (en) * | 1980-12-24 | 1982-07-03 | Kyokuto Kaihatsu Kogyo Co | Extension boom device |
| JPS57166292A (en) * | 1981-03-20 | 1982-10-13 | Mitsuhiro Kishi | Lifting gear |
| JPS5836900A (en) * | 1981-08-26 | 1983-03-03 | 岸 光宏 | Synchronous expansion mechanism for lifting gear |
| JPS5895100A (en) * | 1981-11-28 | 1983-06-06 | 岸 光宏 | Synchronous expansion mechanism of lifting gear |
| JPS58162499A (en) * | 1982-03-18 | 1983-09-27 | 極東開発工業株式会社 | Stretcher for boom of height service car |
| JPS60167900A (en) * | 1984-02-06 | 1985-08-31 | 株式会社彦間製作所 | Elevator |
| JPS60232400A (en) * | 1984-05-01 | 1985-11-19 | 株式会社ジャパニック | Elevator for height service car |
| JPS60236999A (en) * | 1984-05-08 | 1985-11-25 | 株式会社ジャパニック | Boom type lifting gear |
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