JP2690052B2 - Coordinated control method for multiple hydraulic jacks with different acting loads - Google Patents
Coordinated control method for multiple hydraulic jacks with different acting loadsInfo
- Publication number
- JP2690052B2 JP2690052B2 JP10933594A JP10933594A JP2690052B2 JP 2690052 B2 JP2690052 B2 JP 2690052B2 JP 10933594 A JP10933594 A JP 10933594A JP 10933594 A JP10933594 A JP 10933594A JP 2690052 B2 JP2690052 B2 JP 2690052B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- jacks
- hydraulic
- adjusted
- valve
- 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.)
- Expired - Lifetime
Links
Landscapes
- Fluid-Pressure Circuits (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、異なる作用荷重を受け
ている複数の油圧ジャッキを１つの油圧ポンプに連結し
て制御する協調制御方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coordinated control method for connecting a plurality of hydraulic jacks, which receive different acting loads, to a single hydraulic pump for control.
【０００２】[0002]
【従来の技術】作用荷重が異なる複数の油圧ジャッキの
協調制御は、ジャッキ１台ごとに油圧ポンプ１台を接続
し、油圧ポンプを制御することにより間接的に油圧ジャ
ッキを協調制御する技術は知られている。2. Description of the Related Art For the coordinated control of a plurality of hydraulic jacks having different acting loads, a technique of indirectly controlling the hydraulic jacks by connecting one hydraulic pump to each jack and controlling the hydraulic pumps is known. Has been.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記の
技術はジャッキと同数の油圧ポンプが必要となり、その
準備や制御等複雑で面倒であり、できるだけ少ない台数
のジャッキとするためにはジャッキは特注の大型を用い
なければならなかった。However, the above technique requires the same number of hydraulic pumps as the jacks, and the preparation and control thereof are complicated and cumbersome. In order to make the number of jacks as small as possible, the jacks are custom-made. I had to use a large one.
【０００４】そこで、図２に示すように１台の油圧ポン
プ１０で複数の油圧ジャッキＡ〜Ｄを作動させ構築物Ｌ
を押し上げると、図３に示すように、各油圧ジャッキに
作用する荷重には若干の違いが存在するため作用荷重の
少ないジャッキＡだけにストロクが出てジャッキＢでは
逆にストロークが戻ってしまうという問題がある。ここ
で、油圧ジャッキは押し側Ｐには油圧を作用させるが、
戻し側Ｒは作動後にジャッキを元の常態に戻す場合に使
用するだけで、加力時には油圧は掛かっていない。Therefore, as shown in FIG. 2, one hydraulic pump 10 operates a plurality of hydraulic jacks A to D to construct L.
When is pushed up, as shown in FIG. 3, since there is a slight difference in the load acting on each hydraulic jack, only the jack A having a small acting load produces a stroke and the jack B reverses the stroke. There's a problem. Here, the hydraulic jack applies hydraulic pressure to the pushing side P,
The return side R is used only to return the jack to its original state after the operation, and no hydraulic pressure is applied when applying force.
【０００５】したがって、本発明は、各油圧ジャッキ戻
し側Ｒに圧力調整弁を設置することにより１台の油圧ポ
ンプにより作用荷重が異なる複数の油圧ジャッキを容易
に協調制御できる複数油圧ジャッキの協調制御方法を提
供することを目的としている。Therefore, according to the present invention, by installing a pressure adjusting valve on the return side R of each hydraulic jack, a single hydraulic pump can easily coordinately control a plurality of hydraulic jacks having different working loads. It is intended to provide a way.
【０００６】[0006]
【課題を解決するための手段】本発明によれば、異なる
作用荷重を受けている複数の油圧ジャッキを１つの油圧
ポンプに連結して制御する協調制御方法において、前記
複数の油圧ジャッキの戻し側にそれぞれ圧力調整弁を設
置し、それらの圧力調整弁の開弁圧を調整して作用荷重
の異なる複数の油圧ジャッキのストロークが均等に出る
ようにしている。According to the present invention, there is provided a coordinated control method for controlling a plurality of hydraulic jacks receiving different acting loads by connecting them to one hydraulic pump. Each of them is equipped with a pressure adjusting valve, and the opening pressures of these pressure adjusting valves are adjusted so that the strokes of a plurality of hydraulic jacks having different acting loads are evenly produced.
【０００７】そして、前記圧力調整弁の開弁圧の調整
は、前記各ジャッキの圧力調整弁を大略一定の開閉度と
なるように合せた状態で全ジャッキに送油し、いずれか
のジャッキにストロークが出たら送油を停止し、他のす
べてのジャッキの油圧調整弁を順次調整し、すべてのジ
ャッキにストロークが出るよう開弁圧を調整している。The adjustment of the opening pressure of the pressure control valve is performed by feeding the oil to all the jacks in a state where the pressure control valves of the respective jacks are adjusted so as to have a substantially constant opening / closing degree. When the stroke starts, the oil supply is stopped, the hydraulic pressure adjustment valves of all the other jacks are sequentially adjusted, and the valve opening pressure is adjusted so that the strokes of all the jacks come out.
【０００８】また、本発明によれば、前記圧力調整弁の
開弁圧の調整は、各ジャッキの送り側の圧力と戻し側の
圧力との和がすべて等しくなるよう開弁圧を調整しても
よい。Further, according to the present invention, the adjustment of the valve opening pressure of the pressure adjusting valve is performed by adjusting the valve opening pressure so that the sum of the pressure on the sending side and the pressure on the returning side of each jack is equal. Good.
【０００９】[0009]
【作用効果の説明】本発明は上記のように構成されてい
るので、油圧ジャッキのストロークを元に戻すために設
けられている油圧ジャッキの戻し側に設定した圧力で開
弁する圧力調整弁を設置し、ジャッキのストロークが出
たときに戻し側から吐出される油により戻し側に圧力を
発生させると、その圧力は前記圧力調整弁に設定した開
弁圧となる。そして、この戻し側に発生した油圧は押し
側に対する反発力となる。Since the present invention is configured as described above, a pressure regulating valve that opens at the pressure set on the return side of the hydraulic jack provided to restore the stroke of the hydraulic jack is opened. When installed and pressure is generated on the return side by the oil discharged from the return side when the stroke of the jack comes out, the pressure becomes the valve opening pressure set for the pressure regulating valve. The hydraulic pressure generated on the return side serves as a repulsive force to the pushing side.
【００１０】そこで、上記の状態で油圧ジャッキに荷重
を作用させると、ジャッキのストロークを出すために
は、油圧ポンプからは荷重に相当する油圧に、上記反発
力、すなわち疑似荷重に相当する付加圧力を加える事が
必要になる。Therefore, when a load is applied to the hydraulic jack in the above state, in order to make the jack stroke, the hydraulic pump converts the hydraulic pressure corresponding to the load into the repulsive force, that is, the additional pressure corresponding to the pseudo load. Need to be added.
【００１１】よって、複数の油圧ジャッキの中で、作用
荷重が低い油圧ジャッキの戻し側に圧力調整弁により、
ジャッキ毎に適切な油圧を生じさせて、作用荷重の差に
相当する疑似荷重を発生させてストロークを均一化する
事ができ、作用荷重の異なる複数の油圧ジャッキを１台
の油圧ポンプにより容易に協調制御できる。Therefore, among the plurality of hydraulic jacks, the pressure adjusting valve is provided on the return side of the hydraulic jack having a low acting load.
An appropriate hydraulic pressure can be generated for each jack to generate a pseudo load corresponding to the difference in working load to make strokes uniform, making it easy to use multiple hydraulic jacks with different working loads with a single hydraulic pump. Coordinated control is possible.
【００１２】[0012]
【実施例】以下、図面を参照して、本発明の実施例を説
明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１３】図１は本発明を実施する装置の例であり、
第１の油圧ジャッキ１のプランジャ３には作用荷重Ｌ１
が作用し、第２の油圧ジャッキ１１のプランジャ１３に
はＬ１より大である作用荷重Ｌ２が作用している状態を
模式図に示したもので、第１の油圧ジャッキ１のシリン
ダ２は油圧回路４で油圧ポンプ１０に接続され、第２の
油圧ジャッキ１１のシリンダ１２は油圧回路１４で油圧
ポンプ１０にそれぞれ接続されている。FIG. 1 is an example of an apparatus for carrying out the present invention,
The working load L1 is applied to the plunger 3 of the first hydraulic jack 1.
Is applied to the plunger 13 of the second hydraulic jack 11 and a working load L2 larger than L1 is applied to the plunger 13 of the second hydraulic jack 11. The cylinder 2 of the first hydraulic jack 1 has a hydraulic circuit. 4 is connected to the hydraulic pump 10, and the cylinder 12 of the second hydraulic jack 11 is connected to the hydraulic pump 10 by the hydraulic circuit 14.
【００１４】また、第１の油圧ジャッキ１の戻し側には
第１の圧力調整弁５が接続され、第２の油圧ジャッキ１
１の戻し側には第２の圧力調整弁１５が接続されてい
る。A first pressure adjusting valve 5 is connected to the return side of the first hydraulic jack 1 and the second hydraulic jack 1 is connected.
A second pressure adjusting valve 15 is connected to the return side of 1.
【００１５】そして、第一の油圧ジャッキ１の押し側の
油圧Ｐ１、圧力調整弁５の設定圧（開弁圧）ｐ１、第２
の油圧ジャッキ１１の押し側の油圧Ｐ２を以下の手順で
調整する。The hydraulic pressure P1 on the pushing side of the first hydraulic jack 1, the set pressure (valve opening pressure) p1 of the pressure adjusting valve 5, and the second
The hydraulic pressure P2 on the pushing side of the hydraulic jack 11 is adjusted in the following procedure.
【００１６】第１の圧力調整弁５と第２の圧力調整弁１
５とを大略同程度に調整した状態で全油圧ジャッキ（図
示の例では２つ）に送油する。First pressure adjusting valve 5 and second pressure adjusting valve 1
Oil is sent to all hydraulic jacks (two in the illustrated example) in a state in which 5 and 5 are adjusted to substantially the same level.
【００１７】いずれかのジャッキ（図１場合は第１のジ
ャッキ１）のストロークが出たことを確認して送油を停
止する。After confirming that the stroke of one of the jacks (the first jack 1 in FIG. 1) has come out, the oil supply is stopped.
【００１８】第２のジャッキ１１の圧力調整弁１５を調
整し、ストロークが出るまで調整弁を緩める。The pressure adjusting valve 15 of the second jack 11 is adjusted, and the adjusting valve is loosened until the stroke comes out.
【００１９】再度、全ジャッキに送油し、均等にストロ
ークが出ることを確認する。Once again, oil is supplied to all jacks and it is confirmed that the strokes are evenly distributed.
【００２０】均等でない場合は、ストロークのでないジ
ャッキを再調整して、全体を再確認する。（図１の場合
ジャッキが２つのため、第２の調整弁１５を開とし、第
１の調整弁５は開弁圧をｐ１に調整することになる）。
調整が終われば、Ｐ１＋ｐ１＝Ｐ２となる。If they are not equal, readjust the whole by re-adjusting the non-stroke jacks. (In the case of FIG. 1, since there are two jacks, the second adjusting valve 15 is opened and the first adjusting valve 5 adjusts the valve opening pressure to p1).
When the adjustment is completed, P1 + p1 = P2.
【００２１】また、さらに正確に調整する場合は、第１
と第２の油圧ジャッキ１、１１の押し側と戻し側とに図
示しない圧力センサを設置し、その圧力差を計測しなが
ら調整すればよい。For more accurate adjustment, the first
It suffices to install pressure sensors (not shown) on the push side and the return side of the second hydraulic jacks 1 and 11 and adjust them while measuring the pressure difference.
【００２２】[0022]
【発明の効果】本発明は、上記のように構成されている
ので、以下の優れた効果を奏する。The present invention has the following advantages because it is configured as described above.
【００２３】（１）１つの油圧ポンプで複数の油圧ジャ
ッキを協調制御できる。(1) A single hydraulic pump can coordinately control a plurality of hydraulic jacks.
【００２４】（２）多数の油圧ジャッキのストロークを
容易に連動制御できる。(2) The strokes of many hydraulic jacks can be easily interlocked.
【００２５】（３）一般的な小型の油圧ジャッキを多数
使用したプッシュアップ工法が経済的に可能になる。(3) A push-up method using a large number of general small hydraulic jacks can be economically realized.
【図１】本発明の１実施例を示す作用荷重が異なる複数
油圧ジャッキを協調制御する装置の例を示す模式図。FIG. 1 is a schematic view showing an example of an apparatus for cooperatively controlling a plurality of hydraulic jacks having different working loads according to an embodiment of the present invention.
【図２】１つの油圧ポンプに複数の油圧ジャッキを用い
た協調制御概念を示す図。FIG. 2 is a diagram showing a concept of cooperative control using a plurality of hydraulic jacks for one hydraulic pump.
【図３】１つの油圧ポンプに複数の油圧ジャッキを用い
た場合の問題点を説明する図。FIG. 3 is a diagram illustrating a problem when a plurality of hydraulic jacks are used for one hydraulic pump.
１…第１の油圧ジャッキ ２、１２…シリンダ ３…、１３プランジャ ４…、１４油圧回路 ５…第１の圧力調整弁 １０…油圧ポンプ １１…第２の油圧ジャッキ １５…第２の圧力調整弁 Ｌ…構築物 Ｌ１、Ｌ２…作用荷重 DESCRIPTION OF SYMBOLS 1 ... 1st hydraulic jack 2, 12 ... Cylinder 3 ..., 13 Plunger 4 ..., 14 Hydraulic circuit 5 ... 1st pressure adjusting valve 10 ... Hydraulic pump 11 ... 2nd hydraulic jack 15 ... 2nd pressure adjusting valve L ... Construct L1, L2 ... Working load
Claims (3)
ジャッキを１つの油圧ポンプに連結して制御する協調制
御方法において、前記複数の油圧ジャッキの戻し側にそ
れぞれ圧力調整弁を設置し、それらの圧力調整弁の開弁
圧を調整して作用荷重の異なる複数の油圧ジャッキのス
トロークが均等に出るようにする事を特徴とする作用荷
重が異なる複数油圧ジャッキの協調制御方法。1. In a coordinated control method in which a plurality of hydraulic jacks subjected to different acting loads are connected to one hydraulic pump for control, a pressure adjusting valve is installed on each of the return sides of the plurality of hydraulic jacks, A method for coordinated control of a plurality of hydraulic jacks having different working loads, characterized in that the opening pressure of the pressure regulating valve is adjusted so that strokes of the plurality of hydraulic jacks having different working loads are evenly produced.
各ジャッキの圧力調整弁を大略一定の開閉度となるよう
に合せた状態で全ジャッキに送油し、いずれかのジャッ
キにストロークが出たら送油を停止し、他のすべてのジ
ャッキの油圧調整弁を順次調整し、すべてのジャッキに
ストロークが出るよう開弁圧を調整する請求項１に記載
の作用荷重が異なる複数油圧ジャッキの協調制御方法。2. The adjustment of the valve opening pressure of the pressure control valve is performed by feeding oil to all the jacks in a state where the pressure control valves of the respective jacks are adjusted so as to have a substantially constant opening / closing degree. The multiple hydraulic pressures with different acting loads according to claim 1, wherein when the stroke comes out, the oil supply is stopped, the hydraulic pressure adjusting valves of all the other jacks are sequentially adjusted, and the valve opening pressure is adjusted so that the strokes come out to all the jacks. Coordinated control method for jacks.
ャッキの送り側の圧力と戻し側の圧力との和がすべて等
しくなるよう開弁圧を調整する請求項１に記載の作用荷
重が異なる複数油圧ジャッキの協調制御方法。3. The operation according to claim 1, wherein the opening pressure of the pressure adjusting valve is adjusted so that the sum of the pressure on the sending side and the pressure on the returning side of each jack is all equal. Coordinated control method for multiple hydraulic jacks with different loads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10933594A JP2690052B2 (en) | 1994-05-24 | 1994-05-24 | Coordinated control method for multiple hydraulic jacks with different acting loads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10933594A JP2690052B2 (en) | 1994-05-24 | 1994-05-24 | Coordinated control method for multiple hydraulic jacks with different acting loads |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07315774A JPH07315774A (en) | 1995-12-05 |
| JP2690052B2 true JP2690052B2 (en) | 1997-12-10 |
Family
ID=14507624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10933594A Expired - Lifetime JP2690052B2 (en) | 1994-05-24 | 1994-05-24 | Coordinated control method for multiple hydraulic jacks with different acting loads |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2690052B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100266921B1 (en) * | 1996-04-12 | 2000-09-15 | 니시 마사따까 | Lifting jack, method of coupling suspending rods and lift control method |
| CN110092143A (en) * | 2019-05-21 | 2019-08-06 | 中国矿业大学(北京) | A kind of height-adjustable belt conveyer for coal mine |
-
1994
- 1994-05-24 JP JP10933594A patent/JP2690052B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07315774A (en) | 1995-12-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0379595A4 (en) | Hydraulic driving apparatus | |
| SU665788A3 (en) | Method and apparatus for control of the system of at least two series-arranged cylinders | |
| EP1245799A3 (en) | Internal-combustion engine with variable-operation valves and auxiliary hydraulic tappet | |
| EP1039134A3 (en) | Redundant pump control system | |
| JP2690052B2 (en) | Coordinated control method for multiple hydraulic jacks with different acting loads | |
| CA2297040A1 (en) | Method for adjusting supply pressure | |
| US10655740B2 (en) | Work machine | |
| EP1061246A3 (en) | Method and apparatus for cylinder balancing | |
| US6519992B1 (en) | Method for operating a forming press | |
| EP0451274A1 (en) | Hydraulic controller | |
| EP1069316A4 (en) | Method and device for controllably feeding hydraulic oil | |
| JPH05337554A (en) | Device for correcting half-releasing for press brake | |
| US4605042A (en) | Pilot oil supply arrangement | |
| JPH07248005A (en) | Hydraulic cylinder synchronizing device | |
| CA2178985A1 (en) | Method for controlling a pipe bending machine | |
| JP3591807B2 (en) | Control method of hydraulic die cushion device | |
| FR2589799A1 (en) | BRAKING CIRCUIT OF AT LEAST ONE FLUID ENGINE | |
| JP4021953B2 (en) | Hydraulic control device | |
| JP2519665B2 (en) | Double acting hydraulic cylinder | |
| JP3483345B2 (en) | Hydraulic control device for hydraulic drive circuit | |
| JP2974843B2 (en) | Method of controlling the actual pressing force of a press | |
| JP3022139B2 (en) | Opposing hydraulic forming equipment | |
| ES2190833A1 (en) | A press with a hydraulic cushion and a system for controlling the force and pad position thereof | |
| JPH06339800A (en) | Hydraulic press apparatus and method for controlling pressurizing force thereof | |
| JPH08132300A (en) | Hydraulic press provided with kicker cylinder |