JPS60202099A - Hydraulic circuit of aerial work vehicle - Google Patents
Hydraulic circuit of aerial work vehicleInfo
- Publication number
- JPS60202099A JPS60202099A JP59055538A JP5553884A JPS60202099A JP S60202099 A JPS60202099 A JP S60202099A JP 59055538 A JP59055538 A JP 59055538A JP 5553884 A JP5553884 A JP 5553884A JP S60202099 A JPS60202099 A JP S60202099A
- Authority
- JP
- Japan
- Prior art keywords
- control valve
- boom
- workbench
- vehicle
- aerial work
- 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
- 239000003381 stabilizer Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Landscapes
- Forklifts And Lifting Vehicles (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 （創出分野） 本発明は高所作業車の油圧回路に関する。[Detailed description of the invention] (Creation field) The present invention relates to a hydraulic circuit for an aerial work vehicle.
（従来技ＷＩ）
一般ＶＣ，高所作業車にあっては、ブーム先潮に設けた
作業台よりブームの伸縮、起伏あるいは旋回といったブ
ーム関連作動を作業台に配設した方向制御弁によって制
御できるようになっている。(Conventional technology WI) For general VCs and aerial work vehicles, boom-related operations such as boom extension/contraction, raising/lowering, and turning can be controlled by a directional control valve installed on the work platform from the work platform installed at the tip of the boom. It looks like this.
ごの場合、１ｕ記作業台側方向制御弁まで油圧配管を導
いた後、再び前述のブーム関連作動用油圧アクチュエー
タに接続する必要があるため、太き５な配管抵抗が生じ
る。In this case, it is necessary to lead the hydraulic piping to the workbench side directional control valve 1U and then connect it again to the above-mentioned boom-related hydraulic actuator, resulting in thick piping resistance.
したがって、作業台側方向制御弁を切換操作した際のブ
ーム関連作動の作動速度は、車両側方向制御弁を切換操
作した際の作動速度に比較して相対的に遅くなる欠点が
ある。Therefore, there is a drawback that the operating speed of the boom-related operation when the work platform side directional control valve is switched is relatively slow compared to the operating speed when the vehicle side directional control valve is switched.
（目的）
本発明は上記の点に鑑みてなされたもので、作業台側方
向制御弁の切換操作時にはブーム関連作動の作動速度を
上げることのできる高所作業車を提供するものである。(Objective) The present invention has been made in view of the above-mentioned points, and it is an object of the present invention to provide an aerial work vehicle that can increase the operating speed of boom-related operations when switching the work platform side directional control valve.
（１１成）
タンデムポンプの他方からの圧油を、車両側方向制御弁
の下流側でタンデムポンプの一方よりの圧油と合流させ
るように構成したものである。(Section 11) The pressure oil from the other side of the tandem pump is configured to merge with the pressure oil from one side of the tandem pump on the downstream side of the vehicle side direction control valve.
（実施例）
第１図に示すように、高所作業車１０車体２上には旋回
台６が旋回モータ （図示せず）によって旋回制御可能
に搭載されており、旋回台６の上端にブーム４０基端が
起伏自在に枢着されている。(Example) As shown in FIG. 1, a swivel base 6 is mounted on the body 2 of an aerial work vehicle 10 so that the swivel can be controlled by a swivel motor (not shown). 40 base end is pivoted so that it can be raised and lowered freely.
ブーム４は旋回台６との間に配設された起伏シリンダ５
により起伏角度か制御されるとともに、伸縮シリンダ（
図示せず）が内蔵されてその長さが可変な多段伸縮式に
設けられ、その先端ブーム４ａの先端に作業台６が装着
されている。The boom 4 is connected to a luffing cylinder 5 disposed between the swivel base 6 and the boom 4.
The angle of elevation is controlled by the telescopic cylinder (
(not shown) is built-in and is provided in a multi-stage telescoping type with variable length, and a workbench 6 is attached to the tip of the tip boom 4a.
作業台６は、詳細には説明しないが前記ブーム４の起伏
動作に対応して作業台６が常に水平状態を維持するよう
に構成されている。Although not described in detail, the workbench 6 is configured so that the workbench 6 always maintains a horizontal state in response to the raising and lowering movements of the boom 4.
前記作業台乙の連結部材６ａ上には吊上装置７が設けら
れている。 この吊上装置７は、先端にフックを有する
ワイヤを繰り出すウィンチモータ８を有するウィンチ装
置を備え、連結部材６ａ上に旋回自在に立設された旋回
ポスト？と、該旋回ポスト９の上端に枢軸にて回動自在
に枢着されたブームブラケット１０と、このブームプラ
ケット１０ＶＣ摺動可能に嵌挿され、先端に作業用ブー
ムへ、ドが固着された作業用ブーム１１とからなり、上
記旋回ポスト９は前記作業台６を連結部材６８回りに旋
回作動させる図示しない首振シリンダによって選択的に
旋回される。A lifting device 7 is provided on the connecting member 6a of the workbench B. This lifting device 7 is equipped with a winch device having a winch motor 8 for feeding out a wire having a hook at its tip, and a pivot post erected on a connecting member 6a so as to be freely pivotable. , a boom bracket 10 rotatably attached to the upper end of the swing post 9, and a boom bracket 10 VC slidably inserted into the boom bracket 10, and a do is fixed to the work boom at the tip. The pivot post 9 is selectively pivoted by a swing cylinder (not shown) that pivots the workbench 6 around the connecting member 68.
また、車体２の前後両側４箇所には安定脚１２が配設さ
れ、この安定脚１２は図示しないアウトリガシリンダに
よって側方へ張出自在に設けられるとともに、ジャ、キ
ジリンダによって下方へ伸縮自在に設けられており、そ
れぞれ作業時に車体２を支持するものである。Further, stabilizing legs 12 are provided at four locations on both the front and rear sides of the vehicle body 2, and these stabilizing legs 12 are provided so as to be able to extend to the sides by means of outrigger cylinders (not shown), and are also provided to be extendable and retractable downwardly by means of cylinders and cylinders. These support the vehicle body 2 during work.
上記高所作業車１には、第２図の油圧系統図に示すよう
な油圧機器が配設されている。 まず、圧油が供給され
て各種作動を行うアクチュエータとしては、車体２側に
、安定脚１２のアウトリガシリンダ１６と上下伸縮させ
るジャ、キジリンダ１４とからなる安定膨剤アクチュエ
ータＡと、ブーム４を起伏する起伏シリンダ５と旋回台
６を旋回する旋回モータ１５とブーム４を伸縮する伸縮
シリンダ１６とからなるブーム関連作動用アクチュエー
タＢと、また、作業台６側には、吊上装置７のウィンチ
モータ８と首振シリンダ１７．圧着器などの作業用シリ
ンダ１８とからなる作業台関連作動用アクチュエータＯ
が設けられている。The above-mentioned aerial work vehicle 1 is equipped with hydraulic equipment as shown in the hydraulic system diagram of FIG. 2. First, as an actuator that is supplied with pressure oil and performs various operations, there is a stabilizer actuator A on the vehicle body 2 side, which is made up of an outrigger cylinder 16 of the stabilizer leg 12, a jack that extends and contracts vertically, and a kiji cylinder 14, and a stabilizer actuator A that moves the boom 4 up and down. A boom-related actuator B includes a luffing cylinder 5 that rotates the swivel table 6, a swing motor 15 that rotates the swivel table 6, and a telescopic cylinder 16 that extends and retracts the boom 4. 8 and oscillating cylinder 17. Actuator O for operation related to the workbench, consisting of a cylinder 18 for work such as a crimping machine
is provided.
また、上記各アクチュエータの作動を制御する制御弁と
して、車体ν側には安定制用アクチュエータＡＫ対する
安定肌用制御弁ｖ１と、ブーム関連作動用アクチュエー
タＢに対する起伏制御弁Ｖ２、旋回制御弁ｖ６、伸縮制
御弁ｖ４からなる車両側制御弁りとが配設される一方、
作業台６側には作業台関連作動用アクチュエータ０に対
するウィンチ制御弁■５と首振制御弁ｖ６と作業制御弁
ｖ７の他、前述の車両側制御弁ＤＶｃ対応する起伏制御
弁ｖ８、旋回制御弁ｖ９、伸縮制御弁ｖ１０よりなる作
業台側制御弁ｌが配設されている。In addition, as control valves for controlling the operation of each of the above-mentioned actuators, on the vehicle body ν side, there is a stability control valve v1 for the stability control actuator AK, an undulation control valve V2 for the boom-related actuator B, a swing control valve v6, While a vehicle side control valve consisting of a telescopic control valve v4 is provided,
On the workbench 6 side, in addition to the winch control valve ■5, oscillation control valve v6, and work control valve v7 for the actuator 0 for workbench-related operation, there are a levitation control valve v8 and a swing control valve corresponding to the vehicle side control valve DVc described above. A workbench side control valve 1 consisting of a telescopic control valve v9 and a telescopic control valve v10 is provided.
上記各アクチュエータと制御弁に対する油圧系統は、圧
７１１Ｉ源として、エンジンの動力により動力取出装置
１９を介して駆動されるタンデムポンプＦの第１ポンプ
Ｐ１と第２ポンプＰ２とを備えるとともに、電動モータ
２０により駆動される第６ボンブｐ３（非常ポンプ）を
有してなり、第１ポンプＰ１は安定肌用制御弁ｖ１に接
続され該安定肌用制御弁■１がアウトリガシリンダ１６
およびジャ、キジリンダ１４Ｖ：接続される一方、第２
ポンプＰ２が第６ボンプＰ６とともに車両側制御弁Ｄｆ
ｌ−経て作業台側制御弁Ｅに接続され、さらに、第１ポ
ンプＰ１は前記安定肌用制御弁ｖ１を経て車両側制御弁
りを迂回した後、その下流側で作業台側制御弁Ｅに第２
ポンプＰ２と合流接続されている。The hydraulic system for each of the actuators and control valves includes a first pump P1 and a second pump P2 of a tandem pump F driven by engine power via a power extraction device 19 as a pressure 711I source, and an electric motor. The first pump P1 is connected to the stable skin control valve v1, and the stable skin control valve 1 is connected to the outrigger cylinder 16.
and Ja, Kijilinda 14V: while connected, the second
The pump P2 and the sixth pump P6 are connected to the vehicle side control valve Df.
Further, the first pump P1 bypasses the vehicle side control valve via the stable skin control valve v1, and then connects to the workbench side control valve E on the downstream side thereof. Second
It is connected to the pump P2.
上記各制御弁の操作によりブーム４の旋回、起伏および
伸縮（ブーム関連作動）が車両側あるい関連作動）が作
業台側から行われるものである。By operating each of the control valves described above, the boom 4 is rotated, raised and retracted (boom-related operations) from the vehicle side or from the workbench side.
（動作の説明）
□ハ
まず、図示しないエンジンを始動させ、動力取 “出装
置１９を接作動すると、タンデムポンプＦが １駆動し
、圧油を供給可能な状態となる。 ″′１パ・・、・・
・・・・・・・、・・・・・・・・・）、次に安定肌用
制御弁■１を切換操作してアウトリガシリンダー３とジ
ャ、キジリンダ１４を伸長乗せ、車両側で制御：弁ｖ２
．ｖ″６．■４を、あるいは作業台側で制御弁ｖ８．ｖ
９．ｖｌ Ｏを、そ 、′れぞれ切換制御することによ
り、作業台６を空間 □適所に移動させ、各種両所作業
を行うことかできる。(Explanation of operation) □ First, start the engine (not shown) and operate the power take-off device 19, and the tandem pump F will be driven and ready to supply pressure oil.・・・・
・・・・・・・・・・・・・・・・・・), then switch the stable skin control valve ■1 to extend the outrigger cylinder 3, jaw, and kiji cylinder 14, and control from the vehicle side: valve v2
．． v″6.■4, or control valve v8.v on the workbench side.
9. By controlling the switching of VlO and VlO, it is possible to move the workbench 6 to an appropriate location in the space and perform various types of work in both locations.
この際、作業台側制御弁ＥにはタンデムポンプＦを！成
する第１ポンプＰ１および第２ポンプＰ２よりの圧油か
合流して供給され、ブーム関連作動の炸＃速度を増加さ
せることができる。At this time, connect the tandem pump F to the workbench side control valve E! The pressure oil from the first pump P1 and the second pump P2 are combined and supplied to increase the burst speed of the boom-related operation.
（効果）
以上のように本発明にあっては、作業台側制御弁を操作
するときは常にタンデムポンプの両ポンプより圧油が供
給され、ブーム関連作動および作業台Ｐ４Ｍ作動の作＠
速度を増大させることができるＯ(Effects) As described above, in the present invention, when operating the work platform side control valve, pressure oil is always supplied from both pumps of the tandem pump, and boom related operations and work platform P4M operations are performed.
O that can increase the speed
図面は本発明の実ｌ＋ｆＩ態様を例示し、第１図は高所
作業車の全体側面図、第２図は油圧系統図である０
１・・・・高所作業車、４・・・・ブーム、４ａ・・・
・先端ブーム、６・・・・作業台、７・・・・吊上装置
Ｂ・・・・ブーム関連作動用アクチュエータ、０・・・
・作業台関連作動用アクチュエータ、Ｄ・・・・車両側
制御弁、Ｅ・・・・作業台側制御弁、Ｆ・・・・タンデ
ムポンプ。
出願人 新明和工業株式会社The drawings illustrate the actual l+fI aspect of the present invention, and FIG. 1 is an overall side view of the aerial work vehicle, and FIG. 2 is a hydraulic system diagram. Boom, 4a...
・Tip boom, 6... Workbench, 7... Lifting device B... Actuator for boom related operation, 0...
- Actuator for workbench related operation, D...vehicle side control valve, E...workbench side control valve, F...tandem pump. Applicant ShinMaywa Industries Co., Ltd.
Claims (1)
方よりの圧油を車両側制御弁および作業台側制御弁へ供
給可能とした高所作業車において、前記タンデムポンプ
の他方からの圧油を車両−制御弁の下流側で合流するよ
うにしたことを特徴とする高所作業車の油圧回路。(1) In an aerial work vehicle in which pressure oil from one side of a tandem pump driven by an engine can be supplied to a vehicle side control valve and a work platform side control valve, pressure oil from the other side of the tandem pump is supplied to a vehicle side control valve and a work platform side control valve. A hydraulic circuit for an aerial work vehicle characterized by merging on the downstream side of a control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59055538A JPS60202099A (en) | 1984-03-22 | 1984-03-22 | Hydraulic circuit of aerial work vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59055538A JPS60202099A (en) | 1984-03-22 | 1984-03-22 | Hydraulic circuit of aerial work vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60202099A true JPS60202099A (en) | 1985-10-12 |
Family
ID=13001492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59055538A Pending JPS60202099A (en) | 1984-03-22 | 1984-03-22 | Hydraulic circuit of aerial work vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60202099A (en) |
-
1984
- 1984-03-22 JP JP59055538A patent/JPS60202099A/en active Pending
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