JPH03166199A - Automatic self-balancing lifting/lowering device - Google Patents
Automatic self-balancing lifting/lowering deviceInfo
- Publication number
- JPH03166199A JPH03166199A JP30731189A JP30731189A JPH03166199A JP H03166199 A JPH03166199 A JP H03166199A JP 30731189 A JP30731189 A JP 30731189A JP 30731189 A JP30731189 A JP 30731189A JP H03166199 A JPH03166199 A JP H03166199A
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- proportional valve
- electromagnetic proportional
- signal
- hydraulic jacks
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Fluid-Pressure Circuits (AREA)
- Lifting Devices For Agricultural Implements (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】
（産業上の利用分野）
本発明は、複数のジャッキを用いて飛行機等を水平に持
ち上げる昇降装置の改良に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in a lifting device for horizontally lifting an airplane or the like using a plurality of jacks.
（従米の扶＠）
飛行機を！！備や点検のために地上から持ち上げる場合
には、一般に機体の所定の部位に設けたジッキポイント
にそれぞれ油圧ジャッキを配置し、機体の傾きを監視し
つつ、各油圧ジャッキを伸縮駆動している。(Jumei no Fu @) Airplane! ! When lifting an aircraft from the ground for preparations or inspections, hydraulic jacks are generally placed at jack points set up in designated areas of the aircraft, and each hydraulic jack is telescopically driven while monitoring the aircraft's tilt. .
（発明の課Ｎ）
しかし、それには各ジャッキの操作貝や、機体の傾きを
監視してジャッキ操作を指示する人間など数多くの要員
の配置が必要であり、このために飛行機の昇降作業は人
手と時間のかかる面倒な作業となっていた。(Invention Section N) However, this requires the deployment of a large number of personnel, including operating shells for each jack and a person who monitors the inclination of the aircraft and instructs jack operations. This was a time-consuming and troublesome task.
本発明は、以上の問題点を解決すべく、複数のジャッキ
を使用して負荷を水平状態のまま昇降させられる昇降装
置を提供することを目的とする。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, it is an object of the present invention to provide a lifting device that can lift and lower a load in a horizontal state using a plurality of jacks.
（課題を達或するための手段〉
本発明は、負荷を支持する複数の油圧ジャノキと、入力
信号に応じてこれらの油圧ジャ・７キに対する作動油の
供給流量を制御する電磁比例弁と、これらの油圧ジャッ
キのストローク位置を検出する手段と、検出手段の検出
した各油圧ノヤフキのストローク位置の差を計算し、こ
れらの差を小さくする方向の補正信号を前記電磁比例弁
へ出力する制御回路とを備えている。(Means for Achieving the Problems) The present invention provides a plurality of hydraulic jacks that support a load, an electromagnetic proportional valve that controls the flow rate of hydraulic oil supplied to these hydraulic jacks according to an input signal, means for detecting the stroke positions of these hydraulic jacks; and a control circuit that calculates the difference between the stroke positions of the hydraulic jacks detected by the detection means and outputs a correction signal in the direction of reducing these differences to the electromagnetic proportional valve. It is equipped with
（作用）
各油圧ノ＋−／キは電磁比例弁を介して供給さ力る作動
油の流量に応じた速度で負荷を支持しり℃伸張する。同
時に、ストローク位置検出手段が名油圧シリンダのスト
ローク位置を検出し、制御巨路が検出されたストローク
位置の差を計算するとともに、この差を小さくする方向
へ流量を補正する補正信号を電磁比例弁に出力する。電
磁比例力はこの補正信号に基づき各油圧ジャッキに供給
される作動油の流量を制御して各油圧ジャッキの１１張
速度を増滅することにより、複数の油圧ジャッキは同調
して伸張する，
（実施例）
第１図に本発明の実施例を示す。(Function) Each hydraulic pressure valve supports a load and expands at a rate corresponding to the flow rate of hydraulic oil supplied via an electromagnetic proportional valve. At the same time, the stroke position detection means detects the stroke position of the hydraulic cylinder, calculates the difference between the stroke positions where the control path is detected, and sends a correction signal to correct the flow rate in the direction of reducing this difference to the electromagnetic proportional valve. Output to. The electromagnetic proportional force controls the flow rate of hydraulic oil supplied to each hydraulic jack based on this correction signal and increases/decreases the tensioning speed of each hydraulic jack, thereby causing multiple hydraulic jacks to extend in synchrony. Example) FIG. 1 shows an example of the present invention.
１は胴体の下側の３１１所に２〜４のジャッキポイント
を備えた飛行機であり、これらのジャッキポイント２〜
４を支持して飛行機を昇降させるために油圧ジャッキ５
〜７が地上に配設される。1 is an airplane equipped with 2 to 4 jack points at 311 locations on the underside of the fuselage, and these jack points 2 to 4
Hydraulic jack 5 to support 4 and raise and lower the airplane
~7 are installed on the ground.
油圧ジャッキ５〜７はそれぞれシリング８からピストン
ロッド９を摺動自由に突出させ、ボンブ１１からシリン
グ８の圧力室に送り込まれる作動油の圧力でピストンロ
ッド９を伸張させるとともに、この作動油圧力を解放す
ることにより負荷に応じてピストンロッド９を収縮させ
るもので、ジャッキポイント２〜４はこれらの油圧ジャ
ッキ５〜７の各ピストンロ・冫ド９の先端に支持される
。Hydraulic jacks 5 to 7 each have a piston rod 9 slidably protruded from a cylinder 8, and extend the piston rod 9 by the pressure of the hydraulic oil sent from the bomb 11 into the pressure chamber of the cylinder 8, and at the same time, the hydraulic oil pressure is When released, the piston rod 9 is contracted according to the load, and the jack points 2 to 4 are supported at the tips of the piston rods 9 of these hydraulic jacks 5 to 7.
油圧ジャッキ５〜７と油圧ポンプ１１との間にはそれぞ
れ電磁比例弁ユニット１０が介装される。An electromagnetic proportional valve unit 10 is interposed between the hydraulic jacks 5 to 7 and the hydraulic pump 11, respectively.
電磁比例弁ユニット１０ほ電磁比例弁１３とＯＮ、ＯＦ
ＦＭ号で切り換わる３つのソレ／イドバルプ１４〜１６
とパイロット付チェック弁１７がらなる。Solenoid proportional valve unit 10 and solenoid proportional valve 13 ON, OFF
Three soles/ido valves 14 to 16 that change with FM number
and a check valve 17 with a pilot.
電磁比例弁１３は通過する作動油の流量を流れの方向に
関係なく、入力される信号電流に比例して制御するもの
で、パイロフト付チェック弁１７を介してシリンダ８の
圧力室に接続される．ソレノイドパルプ１４は油圧ポン
プ１１とソレノイドバルプ１５及び１６との間に介装さ
れ、ＯＮ信号の入力により油圧ボンプ１１の吐出油をソ
レメイドバルブ１５と１６に供給し、ＯＦＦ信号に対し
ては油圧ボンプ１１の吐出油をタンクに還流する。The electromagnetic proportional valve 13 controls the flow rate of hydraulic oil passing therethrough in proportion to the input signal current, regardless of the flow direction, and is connected to the pressure chamber of the cylinder 8 via a check valve 17 with a pyroft. ．． The solenoid pulp 14 is interposed between the hydraulic pump 11 and the solenoid valves 15 and 16, and when an ON signal is input, the oil discharged from the hydraulic pump 11 is supplied to the solenoid valves 15 and 16. The oil discharged from the pump 11 is returned to the tank.
ソレ／イドバルブ１５はソレノイドバルブ１４と電磁比
例弁１３との間に介装され、ＯＮ信号に対しては電磁比
例弁１３にソレノイドバルブ１４を介したポンプ吐出油
を供給し、ＯＦＦ信号に対しては電磁比例弁１３を夕冫
クに解放する。The solenoid valve 15 is interposed between the solenoid valve 14 and the electromagnetic proportional valve 13, and supplies pump discharge oil to the electromagnetic proportional valve 13 via the solenoid valve 14 in response to an ON signal, and supplies pump discharge oil via the solenoid valve 14 in response to an OFF signal. opens the electromagnetic proportional valve 13 in the evening.
また、ソレ／イドバルブ１６１よパイロット付チェック
弁１７のパイロット回路とソレノイドバルブ１４との間
に介装され、ＯＮ信号に対してはソレ／イドバルブ１４
を介したポンプ吐出油をバイａット回路に供給してチェ
ック弁１７を開８（逆流を許容させ）、ＯＦＦ信号に対
してはパイロット回路をタンクに解放する。Also, it is interposed between the solenoid valve 161, the pilot circuit of the piloted check valve 17, and the solenoid valve 14, and the solenoid valve 161 responds to the ON signal.
The pump discharge oil is supplied to the viat circuit, the check valve 17 is opened (allowing backflow), and the pilot circuit is opened to the tank in response to an OFF signal.
油圧ジャッキ５〜７にはピストンロッド９のストローク
位置を検出する手段としてボテンショメータ１８が付設
される。このポテンシ３メータ１８はピストンロッド９
の伸縮に対応して電気抵抗値を変化させることにより、
ピストンロンド９のストローク位置を信号電流として出
力する。A potentiometer 18 is attached to the hydraulic jacks 5 to 7 as means for detecting the stroke position of the piston rod 9. This potentiometer 3 meter 18 is the piston rod 9
By changing the electrical resistance value in response to the expansion and contraction of
The stroke position of the piston rod 9 is output as a signal current.
また、電磁比例弁ユニツ｝１０を制御する制御回路とし
てコントローラ１９が設けられる。コントローラ１９は
、油圧ジャッキ５〜マに付設したボテンシタメータ１８
と各電磁比例弁ユニット１０の電磁比例弁１３及びソレ
／イドバルブ１４〜１６とそれぞれ信号回路で接続され
る．コントローラ１９には自動操作とマニュアル操作の
２種類の操作モードが設定され、これらのモードを選択
すると同時に、マニュアル操作モードで駆動する場合に
操作対象となる油圧ジャッキ５〜７を選択するスイッチ
２１、上昇及び下降速度と停止とを回動位置に応じて指
示する操作レバー２２、自動操作モードにおいで＠標高
さを設定する、表示Ｈ能を備えた入力装置２３、油圧ジ
ャッキ５〜７の計算並びに表示上のストローク位置をそ
れぞれゼロにセットするリセットスイ・冫チ２４ととも
に、油圧ジャッキ５のストローク位置を表示する表示装
置２７が設けられる。さらに、油圧ノヤ７キ５のストロ
ーク位置と油圧ノヤ・冫キ６と７のストローク位置との
差を表示する表示装置２８と２９が設けられる。Further, a controller 19 is provided as a control circuit for controlling the electromagnetic proportional valve unit 10. The controller 19 includes potentiometers 18 attached to the hydraulic jacks 5 to
and are connected to the electromagnetic proportional valve 13 and solenoid valves 14 to 16 of each electromagnetic proportional valve unit 10 through signal circuits, respectively. Two types of operation modes, automatic operation and manual operation, are set in the controller 19, and at the same time when these modes are selected, a switch 21 is provided to select the hydraulic jacks 5 to 7 to be operated when driving in the manual operation mode. An operating lever 22 that instructs ascent and descent speeds and stops according to the rotational position, an input device 23 with display H function that sets @altitude in automatic operation mode, calculations for hydraulic jacks 5 to 7, and A display device 27 for displaying the stroke position of the hydraulic jack 5 is provided along with a reset switch 24 for setting each stroke position on the display to zero. Further, display devices 28 and 29 are provided for displaying the difference between the stroke position of the hydraulic blower 7 and the stroke position of the hydraulic blowers 6 and 7.
コントローラ１９は操作レバー２２が上昇位置にある時
は、電磁比例弁ユニット１０のソレノイドバルプ１４と
１５に対してＯＮの指令信号を、ソレノイドバルブ１６
にＯＦＦの指令信号を出力する．一方、下降位置にある
時はソレメイドパルブ１４と１６にＯＮの指令信号を、
ソレメイドバルブ１５にＯＦＦの指令信号を出力する。When the operating lever 22 is in the raised position, the controller 19 sends an ON command signal to the solenoid valves 14 and 15 of the electromagnetic proportional valve unit 10, and sends an ON command signal to the solenoid valve 16.
Outputs an OFF command signal to. On the other hand, when it is in the lowered position, the ON command signal is sent to solemade valves 14 and 16.
An OFF command signal is output to the SoleMade valve 15.
また、操作レパー２２が停止位置にある時は、ソレメイ
ドバルブ１４〜１ＧにＯＦＦ信号を出力する．さらに、
コントローラ１９は操作レバー２２が上昇下降いずれの
位置にある場合も操作レバー２２の回動位置に討応した
流量信号を電磁比例弁１３に出力し、操作停止位置にお
いては流量ゼロ信号を電磁比例弁１３に出力する。なお
、これらの信号出力はマニュアル操作モードではスイッ
チ２１を介して選択された油圧ジャッキ５〜７のいずれ
かの電磁比例弁ユニット１０に対して、自動操作モード
では油圧ノヤγキ５〜７のすべての電磁比例弁ユニット
１０に対して行われる．コントローラ１つはまた、ポテ
ンシ３ノータ１８から信号入力される各油圧ジャッキ５
〜７のストローク位置信号から、マスタノヤツキである
油圧ジャッキ５のストローク位置を表示装置２７に表示
するとともに、このストローク位置と油圧シリング６と
７のストローク位置との差を計算して表示装置２８と２
９にそれぞれ表示する。そして、自動操作モードにおい
てはこれらの差を小さくする方向に流量を増滅する補正
信号を、油圧ジャ７キ６と７の一方ないし両方の電磁比
例弁ユニ・冫ト１０に出力する。この補正信号の出力は
ストローク位置の差がゼロになるまで続けられる。Furthermore, when the operating lever 22 is at the stop position, it outputs an OFF signal to the Solemade valves 14 to 1G. moreover,
The controller 19 outputs a flow rate signal corresponding to the rotating position of the operating lever 22 to the electromagnetic proportional valve 13 when the operating lever 22 is in either the ascending or descending position, and outputs a flow rate zero signal to the electromagnetic proportional valve 13 in the operating stop position. Output to 13. In addition, these signal outputs are applied to any one of the electromagnetic proportional valve units 10 of the hydraulic jacks 5 to 7 selected via the switch 21 in the manual operation mode, and to all of the hydraulic jacks 5 to 7 in the automatic operation mode. This is done for the electromagnetic proportional valve unit 10. The controller also controls each hydraulic jack 5, which receives a signal from a potentiometer 3 node 18.
From the stroke position signals of the hydraulic jacks 6 and 7, the stroke position of the master hydraulic jack 5 is displayed on the display device 27, and the difference between this stroke position and the stroke positions of the hydraulic cylinders 6 and 7 is calculated and displayed on the display devices 28 and 2.
9 respectively. In the automatic operation mode, a correction signal that increases or decreases the flow rate in the direction of reducing these differences is output to the electromagnetic proportional valve unit 10 of one or both of the hydraulic jacks 6 and 7. The output of this correction signal continues until the difference in stroke position becomes zero.
また、油圧ジャッキ５のストローク位置がスイ・ノチ２
３で設定された目標高さに一致すると、各電磁比例弁ユ
ニット１０のソレ／イドバルブ１４〜１６にＯＦ１４号
を、電磁比例弁１３に流量ゼロ信号をそれぞれ出力する
．
一方、マニュアル操作モードにおーでは、コントローラ
１９はストローク位置信号から算出されるストローク位
置の差があらかじめ内部に設定された許容最大値に達す
ると、その時点で作動している油圧ジャッキ５ （６
．７ ）の電磁比例弁ユニツ｝１０のソレノイドバルブ
１４〜１６にＯＦＦ信号を、電磁比例弁１３に流量ゼロ
信号をそれぞれ出力し、油圧ジャッキ５（６．７）の伸
縮を停止させる．
次に作用を説明する。Also, the stroke position of the hydraulic jack 5 is Sui Nochi 2.
When the height matches the target height set in step 3, OF14 is output to the solenoid valves 14 to 16 of each electromagnetic proportional valve unit 10, and a zero flow signal is output to the electromagnetic proportional valve 13, respectively. On the other hand, in the manual operation mode, when the difference in stroke position calculated from the stroke position signal reaches the maximum allowable value set in advance, the controller 19 controls the hydraulic jack 5 (
．． 7) Output an OFF signal to the solenoid valves 14 to 16 of the electromagnetic proportional valve unit 10 and a zero flow signal to the electromagnetic proportional valve 13, respectively, to stop the expansion and contraction of the hydraulic jack 5 (6.7). Next, the effect will be explained.
飛行槻１を持ち上げる春毒毒場合は、地上に水平に置か
れた飛行Ｗ１１のジャッキポイント２〜４の下に油圧ジ
ャッキ５〜７を配置し、マニュアル操作モードで油圧ジ
ャッキ５〜７を順次伸張させてピストンロッド９の先端
をジャッキポイント２〜４に当接させる．
次に、スイッチ２１で自動操作モードを選択し、リセッ
トスイッチ２４により油圧ジャッキ５〜７の表示並びに
計算上のストローク位置をゼロにセノトする．そして、
飛行磯１を持ち上げるべき目標高さを入力装置２３から
入力し、操作レバー２２を上昇側へ操作する、これに伴
い、コントローラ１９は各油圧ジャッキ５〜７のンレノ
イドバルブ１４と１５にＯＮ信号を、ソレノイドパルプ
１６にＯＦＦ信号を、電磁比例弁１３に操作レバー２２
の回動位置に応じた流量信号をそれぞれ出力する．電磁
比例弁１３は油圧ボンプ１１の吐出油をこの流量信号に
基づく流量制御のもとでシリング８内の圧力室に供給す
る。この結果、油圧ジャッキ５〜７のピストンロ・ノド
９が同時に伸張し、飛行ｆｉｌが上昇を開始する。なお
、飛行機１の上昇速度は操作レバー２２の回動位置に応
じて無段階に変化する。If you want to lift the flying tsuki 1, place the hydraulic jacks 5 to 7 under the jack points 2 to 4 of the flying W11 placed horizontally on the ground, and extend the hydraulic jacks 5 to 7 sequentially in manual operation mode. and bring the tip of piston rod 9 into contact with jack points 2 to 4. Next, the automatic operation mode is selected using the switch 21, and the displayed and calculated stroke positions of the hydraulic jacks 5 to 7 are set to zero using the reset switch 24. and,
The target height at which the flying rock 1 should be lifted is input from the input device 23, and the operating lever 22 is operated to the upward side. Along with this, the controller 19 sends an ON signal to the renoid valves 14 and 15 of each hydraulic jack 5 to 7. , the OFF signal is sent to the solenoid pulp 16, and the operating lever 22 is sent to the electromagnetic proportional valve 13.
Outputs a flow rate signal according to the rotational position of each. The electromagnetic proportional valve 13 supplies the oil discharged from the hydraulic pump 11 to the pressure chamber in the sill 8 under flow rate control based on this flow rate signal. As a result, the piston rods 9 of the hydraulic jacks 5 to 7 simultaneously extend, and the flight fil begins to rise. Note that the climbing speed of the airplane 1 changes steplessly according to the rotational position of the control lever 22.
この間、コントローラ１９にはボテンシ１メータ１８か
ら油圧ジャッキ５〜７のストローク位置信号が逐次入力
され、コントローラ１９は油圧ジャッキ５のストローク
位置を表示装置２７に表示し、油圧ジャッキ５のストロ
ーク位置と油圧ジャッキ６と７のストローク位置の差を
計算して表示装置２８と２９にそれぞれ表示するととも
に、油圧ジャッキ６と７の一方ないし両方の電磁弁ユニ
ット１０の電磁比例弁１３に、ストローク位置の差を小
さくする方向へ作動油流量を調整する補正信号を出力す
る。During this time, the stroke position signals of the hydraulic jacks 5 to 7 are sequentially inputted to the controller 19 from the potency 1 meter 18, and the controller 19 displays the stroke position of the hydraulic jack 5 on the display device 27, and displays the stroke position of the hydraulic jack 5 and the hydraulic pressure. The difference between the stroke positions of the jacks 6 and 7 is calculated and displayed on the display devices 28 and 29, respectively, and the difference between the stroke positions is displayed on the electromagnetic proportional valve 13 of the electromagnetic valve unit 10 of one or both of the hydraulic jacks 6 and 7. Outputs a correction signal that adjusts the hydraulic oil flow rate in the direction of decreasing it.
したがって、例えば飛行８！１が前傾した場合には、コ
ントローラ１９は油圧ジャッキ６と７の電磁比例弁１３
に流量を増やす補正信号を出力し、油圧ジャッキ６と７
の伸張速度を僅かに高めることにより、前傾している飛
行磯１の姿勢を水平に戻す。そして、油圧ジャッキ５〜
７のストローク位置の差がゼロになると、コントローラ
１９は電磁比例弁１３への補正信号の出力を停止する。Therefore, for example, if the flight 8!1 tilts forward, the controller 19 controls the electromagnetic proportional valves 13 of the hydraulic jacks 6 and 7
outputs a correction signal to increase the flow rate, and hydraulic jacks 6 and 7
By slightly increasing the extension speed of the flying rock 1, the attitude of the flying rock 1, which is tilted forward, is returned to horizontal. And hydraulic jack 5~
When the difference between the stroke positions of 7 becomes zero, the controller 19 stops outputting the correction signal to the electromagnetic proportional valve 13.
このようにして、コントローラ１９が油圧ジャ・ノキ５
〜７のストローク位置の差を常に監視し、ストローク位
置に差が出ると補正信号を出力して油圧ジャッキ６と７
の一方または両方の伸張速度を修正するので、結果とし
て油圧ジャッキ５〜７は同調的に伸張し、飛行磯１は水
平状態を維持したまま上昇する，
さて、マスタノヤ７キである油圧ジャッキ５のストロー
ク位置が入力装置２３に設定されたａ標高さに一致する
と、コントローラ１９は油圧νヤ７キ５〜７の各電磁比
例弁ユニ７ト１０のソレ／イドバルプ１４〜１ＧにＯ
Ｆ Ｆ ｛ｉ号を、電磁比例弁１３に流量ゼロ信号をそ
れぞれ出力して油圧ジャッキ５〜７の伸張を停止する。In this way, the controller 19
The difference between the stroke positions of hydraulic jacks 6 and 7 is constantly monitored, and if there is a difference in stroke position, a correction signal is output and the hydraulic jacks 6 and 7 are adjusted.
As a result, hydraulic jacks 5 to 7 extend synchronously, and flying rock 1 rises while maintaining its horizontal state. When the stroke position matches the altitude a set in the input device 23, the controller 19 outputs O to the sole/id valves 14 to 1G of each electromagnetic proportional valve unit 7 to 10 of the hydraulic pressure ν gears 5 to 7.
F F {I outputs a zero flow signal to the electromagnetic proportional valve 13 to stop the extension of the hydraulic jacks 5 to 7.
以後、飛行磯１は指示された目標高さに水平状態で支持
される。Thereafter, the flying rock 1 is supported in a horizontal state at the specified target height.
上昇位置の飛行機１を下降させる場合には、自動操作モ
ードのまま操作レバー２２を下降側へ回勤する。これに
よりコントローラ１９は油圧ジャッキ５〜７の各ソレノ
イドバルブ１４と１６にＯＮ信号を、ソレノイドバルブ
１５にＯＦＦ信吐を、電磁比例弁１３に操作レバー２２
の回動位置に応じた流量信号をそれぞれ出力し、シリン
ダ８の圧力室の作動油が開かれたチェック弁１７から電
磁比例弁１３に流量を制御されつつタンクに還流し、油
圧シャツＪ＋５〜７のピストンロノド９が同時に収縮し
て飛行磯１を下降させる。なお、この場合にも、コント
ローラ１９は前記上昇時と同様にボテンシ１メータ１８
から入力されるストローク位置信号から油圧ジャッキ５
〜７のストローク位置の差を計算し、この差を小さくす
る補正信寸を電磁比例弁１３に出力することで、油圧ジ
ャッキ５〜７を同調的に収縮させ、下降中の飛行機１を
水平に維持する。When lowering the airplane 1 from the raised position, the operating lever 22 is rotated to the lowering side while remaining in the automatic operation mode. As a result, the controller 19 sends an ON signal to each of the solenoid valves 14 and 16 of the hydraulic jacks 5 to 7, an OFF signal to the solenoid valve 15, and an OFF signal to the electromagnetic proportional valve 13 on the operating lever 22.
The hydraulic fluid in the pressure chamber of the cylinder 8 is returned to the tank from the opened check valve 17 with the flow rate controlled by the electromagnetic proportional valve 13, and the hydraulic fluid is returned to the tank according to the rotational position of the hydraulic shirt J+5 to J+7. The piston rods 9 contract simultaneously to lower the flying rock 1. In this case as well, the controller 19 controls the potency 1 meter 18 as in the case of rising.
Hydraulic jack 5 from the stroke position signal input from
By calculating the difference in the stroke positions of 7 to 7 and outputting a correction signal to reduce this difference to the electromagnetic proportional valve 13, the hydraulic jacks 5 to 7 are synchronously contracted, and the descending airplane 1 is leveled. maintain.
ところで、例えば整備や点検等の都合上、飛行磯１を上
昇位置で若干傾斜させたい場合には、スインチ２１をマ
ニュアル操作モードに切り換え、油圧ジャッキ５〜７の
いずれかを選択して、操作レバー２２を上昇あるいは下
降側へ操作すれば、選択した油圧ジャ・冫キ５（６，７
）のみを伸縮させて飛行機１を傾斜させることができる
。この場合に、コントローラ１つは各ボテンショメータ
】８から逐次入力される油圧ノヤγキ５〜７のストロー
ク位置からストローク位置の差を検出し、これがあらか
じめ設定された許容最大値を上回ると、操作レバー２２
の位置に関わらず、電磁比例弁ユニント１０へ信号出力
を行って駆動中の油圧ジャッキ５（６．７）を停止させ
る。このため、油圧ノヤ，キ５〜７を個別に駆動するマ
ニュアル操作モードにおいても、飛行磯１の傾きが過大
になる恐れはない。By the way, if you want to slightly tilt the flying rock 1 in the raised position for reasons such as maintenance or inspection, switch the swing 21 to manual operation mode, select one of the hydraulic jacks 5 to 7, and press the operating lever. 22 to the up or down side, the selected hydraulic jack 5 (6, 7
) can be expanded or contracted to tilt the airplane 1. In this case, one controller detects the difference in stroke position from the stroke positions of the hydraulic pressure gauges 5 to 7 that are sequentially input from each potentiometer 8, and if this exceeds a preset maximum allowable value, Operation lever 22
Regardless of the position, a signal is output to the electromagnetic proportional valve unit 10 to stop the hydraulic jack 5 (6.7) being driven. Therefore, even in the manual operation mode in which the hydraulic propellers and keys 5 to 7 are driven individually, there is no risk that the inclination of the flying rock 1 will become excessive.
（発明の効果）
以上のように、本発明は負荷を支持する複数の油圧ジャ
ッキと、各油圧ジャッキへの作動油の供給流量を信号に
応じて制御する電磁比例弁と、各油圧ジャッキのストロ
ーク位置を検出する手段と、検出したストローク位置の
差を計算してこれらの差を小さくする方向へ流量を補正
する信号を各電磁比例弁に出力する制御回路とを備えた
ため、複数の油圧ジャッキを同調的に伸縮させることが
できる。このため、負荷は常に水平を維持したまま昇降
し、水平維持に要する手間を節杓できる。また、支持さ
れる負荷に傾斜計等の特別な機材を備える必要もない。(Effects of the Invention) As described above, the present invention includes a plurality of hydraulic jacks that support a load, an electromagnetic proportional valve that controls the flow rate of hydraulic fluid supplied to each hydraulic jack according to a signal, and a stroke of each hydraulic jack. Equipped with a means for detecting the position and a control circuit that calculates the difference between the detected stroke positions and outputs a signal to each electromagnetic proportional valve to correct the flow rate in the direction of reducing these differences, it is possible to use multiple hydraulic jacks. It can be expanded and contracted synchronously. Therefore, the load is always raised and lowered while maintaining the level, and the effort required to maintain the level can be reduced. Further, there is no need to equip the load to be supported with special equipment such as an inclinometer.
したがって、本発明を飛行機の点検整備用の昇降装置等
に適用すれば、昇降作業の効率化と省力化並びに安全性
の向上に多大な効果が得られる。Therefore, if the present invention is applied to a lifting device for inspection and maintenance of airplanes, great effects can be obtained in increasing the efficiency and labor saving of lifting operations and improving safety.
弟１図は本発明の実施例を示す飛行機の自動平衡型昇降
Ｈ置の構或図である。
１・・・飛行機、２〜４・・・ノヤソキポイント、５〜
７・・・油圧ジャッキ、１０・・・電磁比例弁ユニット
、１１・・・油圧ボンブ、１３・・・電磁比例弁、１４
〜１６・・・ソレメイドバノレブ、１７・・・パイロッ
ト付チエ・冫ク弁、１８・・・ボテンシうメー夕、１９
・・・コントローラ、２２・・・操作レバーFIG. 1 is a diagram showing the structure of a self-balancing type lifting/lowering H position for an airplane, showing an embodiment of the present invention. 1...Airplane, 2~4...Noya Soki Point, 5~
7... Hydraulic jack, 10... Solenoid proportional valve unit, 11... Hydraulic bomb, 13... Solenoid proportional valve, 14
~16...Soremade Banoreb, 17...Chie/Makuben with pilot, 18...Botense Ume Yu, 19
...Controller, 22...Operation lever
Claims (1)
てこれらの油圧ジャッキに対する作動油の供給流量を制
御する電磁比例弁と、これらの油圧ジャッキのストロー
ク位置を検出する手段と、検出手段の検出した各油圧ジ
ャッキのストローク位置の差を計算し、これらの差を小
さくする方向の補正信号を前記電磁比例弁へ出力する制
御回路とを備えたことを特徴とする自動平衡型の昇降装
置。A plurality of hydraulic jacks that support a load, an electromagnetic proportional valve that controls the flow rate of hydraulic oil supplied to these hydraulic jacks according to an input signal, a means for detecting the stroke position of these hydraulic jacks, and a detection means for detecting the stroke position of these hydraulic jacks. A self-balancing lifting device comprising: a control circuit that calculates the difference in stroke position of each hydraulic jack and outputs a correction signal to the electromagnetic proportional valve in a direction to reduce the difference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1307311A JP2740559B2 (en) | 1989-11-27 | 1989-11-27 | Automatic balancing type lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1307311A JP2740559B2 (en) | 1989-11-27 | 1989-11-27 | Automatic balancing type lifting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03166199A true JPH03166199A (en) | 1991-07-18 |
| JP2740559B2 JP2740559B2 (en) | 1998-04-15 |
Family
ID=17967623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1307311A Expired - Fee Related JP2740559B2 (en) | 1989-11-27 | 1989-11-27 | Automatic balancing type lifting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2740559B2 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0575287U (en) * | 1992-03-17 | 1993-10-15 | 株式会社小松製作所 | Heavy lift machine |
| WO1997038933A1 (en) * | 1996-04-12 | 1997-10-23 | Hitachi Plant Engineering & Construction Co., Ltd. | Lifting jack, method of coupling suspending rods and lift control method |
| WO2003086942A3 (en) * | 2002-04-12 | 2004-03-04 | Capital Formation Inc | Method and apparatus for synchronizing a vehicle lift |
| US7150073B2 (en) | 2004-04-27 | 2006-12-19 | Delaware Capital Formation, Inc. | Hinge pin |
| US9087761B2 (en) | 2010-10-07 | 2015-07-21 | Sony Corporation | Solid-state imaging device including an on-chip lens with two inorganic films thereon |
| US10087958B2 (en) | 2012-04-19 | 2018-10-02 | Cascade Corporation | Fluid power control system for mobile load handling equipment |
| US10227222B2 (en) | 2015-07-31 | 2019-03-12 | Vehicle Service Group, Llc | Precast concrete pit |
| US10246313B2 (en) | 2015-07-31 | 2019-04-02 | Vehicle Service Group, Llc | Precast concrete pit |
| JP2019518686A (en) * | 2016-05-18 | 2019-07-04 | オー．エムイー．アール．エス．ピー．エー． | Improved method for setting up and controlling a lifting system |
| JP2023174249A (en) * | 2022-05-27 | 2023-12-07 | 三菱電機株式会社 | Heavy object lifting method and lifting jack system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS504795A (en) * | 1973-05-14 | 1975-01-18 | ||
| JPS54142769A (en) * | 1978-04-17 | 1979-11-07 | Ishikawajima Harima Heavy Ind Co Ltd | Jack operation tuning method |
| JPS62235199A (en) * | 1986-04-02 | 1987-10-15 | フロントエンジニアリング株式会社 | Propeller |
-
1989
- 1989-11-27 JP JP1307311A patent/JP2740559B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS504795A (en) * | 1973-05-14 | 1975-01-18 | ||
| JPS54142769A (en) * | 1978-04-17 | 1979-11-07 | Ishikawajima Harima Heavy Ind Co Ltd | Jack operation tuning method |
| JPS62235199A (en) * | 1986-04-02 | 1987-10-15 | フロントエンジニアリング株式会社 | Propeller |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0575287U (en) * | 1992-03-17 | 1993-10-15 | 株式会社小松製作所 | Heavy lift machine |
| WO1997038933A1 (en) * | 1996-04-12 | 1997-10-23 | Hitachi Plant Engineering & Construction Co., Ltd. | Lifting jack, method of coupling suspending rods and lift control method |
| AU710315B2 (en) * | 1996-04-12 | 1999-09-16 | Hitachi, Ltd. | Lifting jack, method of coupling suspending rods and lift control method |
| US6041491A (en) * | 1996-04-12 | 2000-03-28 | Hitachi Plant Engineering Construction Co., Ltd. | Rod attaching/detaching device for a lifting jack and method of coupling suspending rods |
| WO2003086942A3 (en) * | 2002-04-12 | 2004-03-04 | Capital Formation Inc | Method and apparatus for synchronizing a vehicle lift |
| US6763916B2 (en) | 2002-04-12 | 2004-07-20 | Delaware Capital Formation, Inc. | Method and apparatus for synchronizing a vehicle lift |
| US6964322B2 (en) | 2002-04-12 | 2005-11-15 | Delaware Capital Formation, Inc. | Method and apparatus for synchronizing a vehicle lift |
| US7150073B2 (en) | 2004-04-27 | 2006-12-19 | Delaware Capital Formation, Inc. | Hinge pin |
| US9087761B2 (en) | 2010-10-07 | 2015-07-21 | Sony Corporation | Solid-state imaging device including an on-chip lens with two inorganic films thereon |
| US10087958B2 (en) | 2012-04-19 | 2018-10-02 | Cascade Corporation | Fluid power control system for mobile load handling equipment |
| US10227222B2 (en) | 2015-07-31 | 2019-03-12 | Vehicle Service Group, Llc | Precast concrete pit |
| US10246313B2 (en) | 2015-07-31 | 2019-04-02 | Vehicle Service Group, Llc | Precast concrete pit |
| JP2019518686A (en) * | 2016-05-18 | 2019-07-04 | オー．エムイー．アール．エス．ピー．エー． | Improved method for setting up and controlling a lifting system |
| JP2023174249A (en) * | 2022-05-27 | 2023-12-07 | 三菱電機株式会社 | Heavy object lifting method and lifting jack system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2740559B2 (en) | 1998-04-15 |
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