JPH0227522B2 - FUKUSUKONOYUATSUMOOTANOSEIGYOKAIROSOCHI - Google Patents
FUKUSUKONOYUATSUMOOTANOSEIGYOKAIROSOCHIInfo
- Publication number
- JPH0227522B2 JPH0227522B2 JP16767982A JP16767982A JPH0227522B2 JP H0227522 B2 JPH0227522 B2 JP H0227522B2 JP 16767982 A JP16767982 A JP 16767982A JP 16767982 A JP16767982 A JP 16767982A JP H0227522 B2 JPH0227522 B2 JP H0227522B2
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic motor
- path
- valve
- main hydraulic
- closed circuit
- 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
- 239000012530 fluid Substances 0.000 description 14
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
Landscapes
- Fluid-Pressure Circuits (AREA)
Description
【発明の詳細な説明】
本発明は複数個の油圧モータの制御回路装置に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control circuit device for a plurality of hydraulic motors.
従来、ウインチ等に於て、例えば第1図示のよ
うに、主油圧モータaとこれと同期回転する副油
圧モータbの複数台を備え、該副油圧モータbの
作動回路を逆止弁cを介在した閉回路dに構成
し、該逆止弁cの前後を主油圧モータaへの往復
路e,fに夫々接続路g,hを介して接続すると
共に一方の接続路gに主油圧モータaの往路eが
設定圧力以上になると開くシーケンス弁iと他方
の接続路hに該閉回路dから主油圧モータaの復
路fへの流れを許容する逆止弁jとを介在させる
ようにしたものが知られている。この場合ウイン
チドラムkの巻上荷重が軽いときは主油圧モータ
aのみでウインチドラムkを回転し、副油圧モー
タbは該ドラムkによりモータとして駆動されそ
の作動油は閉回路d内を循環するが巻上荷重が重
いときはシーケンス弁iが開くので両モータa,
bが回転され共同してドラムkを駆動する。また
ドラムkを逆転する場合には主油圧モータaの往
路e及び副油圧モータbの閉回路dに介在させた
カウンタバランス弁l,mが作動してドラムkの
逸走を防止する。而してかかる制御回路では巻上
荷重が重くならない限り閉回路d内の流体は交換
されず、軽荷重の上下を繰返した場合には該閉回
路d内の流体温度が上昇する不都合があり、さら
に各油圧モータa,bの各回路に設けられたカウ
ンタバランス弁l,mは同一油圧源からパイロツ
ト圧力が導かれてはいるが加工精度等が原因で両
カウンタバランス弁l,mは同じ開口面積になら
ず、各油圧モータa,bのカウンター圧力が同じ
にならないため油圧モータ及びこれに駆動される
ドラムkに於てハンチングを生じ勝ちである欠点
があつた。 Conventionally, winches and the like have been equipped with a plurality of main hydraulic motors a and auxiliary hydraulic motors b that rotate synchronously with the main hydraulic motor a, as shown in the first diagram, and the operating circuit of the auxiliary hydraulic motor b is connected to a check valve c. The front and back of the check valve c are connected to the reciprocating paths e and f to the main hydraulic motor a via connection paths g and h, respectively, and one connection path g is connected to the main hydraulic motor. A sequence valve i that opens when the outward path e of a becomes equal to or higher than a set pressure, and a check valve j that allows flow from the closed circuit d to the return path f of the main hydraulic motor a are interposed in the other connecting path h. something is known. In this case, when the hoisting load on the winch drum k is light, the winch drum k is rotated only by the main hydraulic motor a, and the auxiliary hydraulic motor b is driven by the drum k as a motor, and its hydraulic oil circulates in the closed circuit d. When the hoisting load is heavy, sequence valve i opens, so both motors a,
b is rotated and jointly drives drum k. Further, when the drum k is reversed, counterbalance valves l and m interposed in the forward path e of the main hydraulic motor a and the closed circuit d of the auxiliary hydraulic motor b operate to prevent the drum k from running away. However, in such a control circuit, the fluid in the closed circuit d is not replaced unless the hoisting load becomes heavy, and if the lifting and lowering of the light load is repeated, the temperature of the fluid in the closed circuit d increases. Furthermore, the counterbalance valves l and m provided in each circuit of each hydraulic motor a and b receive pilot pressure from the same hydraulic source, but due to processing precision, both counterbalance valves l and m have the same opening. Since the counter pressures of the hydraulic motors a and b are not the same, hunting tends to occur in the hydraulic motor and the drum k driven by the hydraulic motor.
本発明は副油圧モータの閉回路の温度上昇を防
止すると共にカウンタバランス弁が原因となるハ
ンチングの欠点のない制御回路装置を提供するこ
とを目的としたもので、主油圧モータとこれと同
期回転する副油圧モータを備え、該副油圧モータ
の作動回路を逆止弁を介在した閉回路に構成し、
該逆止弁の前後を主油圧モータへの往復路に夫々
接続路を介して接続すると共に一方の接続路に主
油圧モータの往路が設定圧力以上になると開くシ
ーケンス弁と他方の接続路に該閉回路から主油圧
モータの復路への流れを許容する逆止弁とを介在
させるようにしたものに於て、主油圧モータの往
路に介在させたカウンタバランス弁の前方を復路
の圧力で開く開閉弁を介して閉回路に接続し、シ
ーケンス弁を介在させた接続路に該シーケンス弁
と並列に閉回路から主油圧モータの往路への流れ
を許容する逆止弁を介在させたことを特徴とす
る。 The object of the present invention is to provide a control circuit device which prevents temperature rise in the closed circuit of the auxiliary hydraulic motor and which does not have the disadvantage of hunting caused by a counterbalance valve, and which rotates synchronously with the main hydraulic motor. an auxiliary hydraulic motor, and an operating circuit of the auxiliary hydraulic motor is configured as a closed circuit with a check valve interposed therebetween;
The front and back of the check valve are connected to the reciprocating path to the main hydraulic motor through connecting paths, respectively, and one connecting path has a sequence valve that opens when the outward path of the main hydraulic motor exceeds a set pressure, and the other connecting path is connected to When a check valve is interposed to allow flow from the closed circuit to the return path of the main hydraulic motor, the front side of the counterbalance valve interposed in the outgoing path of the main hydraulic motor is opened and closed by the pressure of the return path. It is characterized in that it is connected to the closed circuit via a valve, and a check valve is interposed in parallel with the sequence valve in the connection path in which the sequence valve is interposed, allowing flow from the closed circuit to the outgoing path of the main hydraulic motor. do.
本発明の実施例を図面第2図について説明する
と、1は主油圧モータ、2は副油圧モータでこれ
ら主副油圧モータ1,2はウインチのドラム3に
回転接続される。4は該副油圧モータ2の閉回
路、5は該閉回路4に介在した逆止弁を示し、該
逆止弁5の前後は主油圧モータ1の往復路6,7
に接続路8,9を介して接続される。10は該接
続路8に介在させたシーケンス弁、11は他方の
接続路9に介在させた逆止弁で、往路6の圧力が
該シーケンス弁10の設定圧力より高くなると該
弁10が開いて該往路6から閉回路4及び副油圧
モータ2を循環し接続路9の逆止弁11を介して
復路7へ戻る流れが生じ、副油圧モータ2が主油
圧モータ1と共同してドラム3を回転させる。1
2はリリーフ弁、13は主油圧モータ1の正逆転
を制御する流量調整付き切換弁、14はポンプ、
15はタンクである。 An embodiment of the present invention will be described with reference to FIG. 2. Reference numeral 1 denotes a main hydraulic motor, 2 a sub-hydraulic motor, and these main and sub-hydraulic motors 1 and 2 are rotatably connected to a drum 3 of a winch. Reference numeral 4 indicates a closed circuit of the auxiliary hydraulic motor 2, 5 indicates a check valve interposed in the closed circuit 4, and the front and back of the check valve 5 are the reciprocating paths 6 and 7 of the main hydraulic motor 1.
are connected to via connecting paths 8 and 9. 10 is a sequence valve interposed in the connecting path 8; 11 is a check valve interposed in the other connecting path 9; when the pressure in the outgoing path 6 becomes higher than the set pressure of the sequence valve 10, the valve 10 opens. A flow circulates from the outgoing path 6 through the closed circuit 4 and the auxiliary hydraulic motor 2 and returns to the incoming path 7 via the check valve 11 of the connecting path 9, and the auxiliary hydraulic motor 2 works with the main hydraulic motor 1 to drive the drum 3. Rotate. 1
2 is a relief valve; 13 is a switching valve with flow rate adjustment that controls forward and reverse rotation of the main hydraulic motor 1; 14 is a pump;
15 is a tank.
以上の構成は従来のものと略同様であるが、本
発明のものでは主油圧モータ1の往路6の逆止弁
16と並列に設けたカウンタバランス弁17の前
方即ち切換弁13寄りの往路6から閉回路4の逆
止弁5の前方へ回路18で接続してこれに復路7
の圧力で開弁する開閉弁19を介在させ、さらに
接続路8のシーケンス弁10と並列に閉回路4か
ら往路6への流れを許容する逆止弁20を設け、
両油圧モータ1,2の巻き下げ作動時にその背圧
が1個のカウンタバランス弁17で制御されると
共に閉回路4の流体が交換されるようにした。そ
の作動を説明するに、ドラム3の負荷が軽い場
合、切換弁13を位置13aに切換えするとポン
プ14から出た圧力流体は往路6を逆止弁16を
介して主油圧モータ1を回転させて負荷を巻き上
げ、復路7を介してタンク15に戻る。この場合
副油圧モータ2はドラム1より駆動されその閉回
路4内の流体は逆止弁5を介して該閉回路4内を
循環するに留まる。またドラム3の負荷が重い場
合には往路6の圧力によりシーケンス弁10が開
弁し、該往路6の流量の一部が接続路8、副油圧
モータ2及び接続路9を介して復路7を循環する
ので主油圧モータ1,2が共同でドラム3を駆動
する。 The above configuration is approximately the same as that of the conventional one, but in the present invention, the forward path 6 of the main hydraulic motor 1 is located in front of the counterbalance valve 17 provided in parallel with the check valve 16 of the forward path 6, that is, near the switching valve 13. is connected to the front of the check valve 5 of the closed circuit 4 by a circuit 18, and a return path 7 is connected to this by a circuit 18.
An on-off valve 19 that opens at a pressure of
During the lowering operation of both hydraulic motors 1 and 2, the back pressure thereof is controlled by one counterbalance valve 17, and the fluid in the closed circuit 4 is exchanged. To explain its operation, when the load on the drum 3 is light, when the switching valve 13 is switched to the position 13a, the pressure fluid discharged from the pump 14 passes through the outgoing path 6 through the check valve 16 and rotates the main hydraulic motor 1. The load is hoisted up and returned to the tank 15 via the return path 7. In this case, the auxiliary hydraulic motor 2 is driven by the drum 1, and the fluid in the closed circuit 4 only circulates within the closed circuit 4 via the check valve 5. When the load on the drum 3 is heavy, the sequence valve 10 is opened by the pressure in the outgoing path 6, and a part of the flow rate in the outgoing path 6 is transferred to the incoming path 7 via the connecting path 8, the auxiliary hydraulic motor 2, and the connecting path 9. Due to the circulation, the main hydraulic motors 1 and 2 jointly drive the drum 3.
以上の作動は従来のものも同様であるが切換弁
13を位置13bに切換え負荷を巻き下げるべく
駆動させる場合、ポンプ14の吐出流体は復路7
に流入し、その圧力でカウンタバランス弁17を
開くと共に開閉弁19を開くので主油圧モータ1
から出た流体がカウンタバランス弁17に流入す
ると共に副油圧モータ2から出た流体も接続路8
の逆止弁20を介して主油圧モータ1の流体と合
流して該カウンタバランス弁17に流入するので
両モータ1,2の背圧は1個のカウンタバランス
弁17により同圧に制御され、両油圧モータ1,
2をハンチングを生じさせることなく駆動するこ
とが可能になり、また該弁17を出た流体は2つ
に分れ、一方は開閉弁19を介して閉回路4から
副油圧モータ2へ、もう一方は切換弁13を介し
てタンク15へと流れるので閉回路4の流体を閉
じ込めておくことなく交換することが出来る。 The above operation is similar to that of the conventional one, but when the switching valve 13 is switched to position 13b and driven to reduce the load, the fluid discharged from the pump 14 is transferred to the return path 7.
The main hydraulic motor 1
The fluid flowing out from the auxiliary hydraulic motor 2 flows into the counterbalance valve 17, and the fluid flowing out from the auxiliary hydraulic motor 2 also flows into the connecting path 8.
The back pressure of both motors 1 and 2 is controlled to be the same pressure by one counterbalance valve 17 because it joins with the fluid of the main hydraulic motor 1 through the check valve 20 and flows into the counterbalance valve 17. Both hydraulic motors 1,
2 can be driven without causing hunting, and the fluid exiting the valve 17 is divided into two parts, one from the closed circuit 4 to the auxiliary hydraulic motor 2 via the on-off valve 19, and the other from the closed circuit 4 to the auxiliary hydraulic motor 2. One side flows to the tank 15 via the switching valve 13, so the fluid in the closed circuit 4 can be replaced without being trapped.
このように本発明によるときは、主油圧モータ
の往路のカウンタバランス弁の前方を復路の圧力
で開く開閉弁を介して副油圧モータの閉回路に接
続し、シーケンス弁を備えた接続路に該シーケン
ス弁と並列に閉回路から前記往路への流れを許容
する逆止弁を介在させたので、主副の複数台の油
圧モータを1台のカウンタバランス弁で制御する
ことが出来て経済的であると共に従来のような各
油圧モータの回路に夫々設けられたカウンタバラ
ンス弁の不同調による油圧モータのハンチングを
生ずることもなく、また副油圧モータの閉回路の
流体を前記したような軽荷重の下げ作動時に於て
主油圧モータの回路の流体と交換し得油温の上昇
を防止することが出来る効果がある。 As described above, according to the present invention, the front side of the counterbalance valve on the forward path of the main hydraulic motor is connected to the closed circuit of the auxiliary hydraulic motor via the on-off valve that is opened by the pressure on the return path, and the connecting path equipped with the sequence valve is connected. Since a check valve that allows flow from the closed circuit to the above-mentioned outgoing path is interposed in parallel with the sequence valve, multiple main and sub hydraulic motors can be controlled with one counterbalance valve, which is economical. At the same time, it does not cause hunting of the hydraulic motor due to out of synchronization of the counterbalance valves provided in the circuit of each hydraulic motor, as in the conventional case, and the fluid in the closed circuit of the auxiliary hydraulic motor can be controlled even under light loads such as those described above. During the lowering operation, the fluid can be replaced with the fluid in the circuit of the main hydraulic motor, which has the effect of preventing a rise in oil temperature.
第1図は従来の複数台の油圧モータの制御回路
装置の線図、第2図は本発明の実施例の線図であ
る。
1……主油圧モータ、2……副油圧モータ、4
……閉回路、5……逆止弁、6……往路、7……
復路、8,9……接続路、10……シーケンス
弁、11……逆止弁、17……カウンタバランス
弁、19……開閉弁、20……逆止弁。
FIG. 1 is a diagram of a conventional control circuit device for a plurality of hydraulic motors, and FIG. 2 is a diagram of an embodiment of the present invention. 1... Main hydraulic motor, 2... Sub-hydraulic motor, 4
...Closed circuit, 5...Check valve, 6...Outward path, 7...
Return path, 8, 9... Connection path, 10... Sequence valve, 11... Check valve, 17... Counter balance valve, 19... Open/close valve, 20... Check valve.
Claims (1)
ータを備え、該副油圧モータの作動回路を逆止弁
を介在した閉回路に構成し、該逆止弁の前後を主
油圧モータへの往復路に夫々接続路を介して接続
すると共に一方の接続路に主油圧モータの往路が
設定圧力以上になると開くシーケンス弁と他方の
接続路に該閉回路から主油圧モータの復路への流
れを許容する逆止弁とを介在させるようにしたも
のに於て、主油圧モータの往路に介在させたカウ
ンタバランス弁の前方を復路の圧力で開く開閉弁
を介して閉回路に接続し、シーケンス弁を介在さ
せた接続路に該シーケンス弁と並列に閉回路から
主油圧モータの往路への流れを許容する逆止弁を
介在させたことを特徴とする複数個の油圧モータ
の制御回路装置。1. A main hydraulic motor and an auxiliary hydraulic motor that rotates in synchronization with the main hydraulic motor, the operating circuit of the auxiliary hydraulic motor is configured as a closed circuit with a check valve interposed, and a reciprocating path to the main hydraulic motor is provided before and after the check valve. and a sequence valve that opens when the outgoing path of the main hydraulic motor exceeds a set pressure, and the other connecting path allows flow from the closed circuit to the incoming path of the main hydraulic motor. In the case where a check valve is interposed, the front side of the counterbalance valve interposed in the outgoing path of the main hydraulic motor is connected to a closed circuit via an on-off valve that opens with the pressure of the incoming path, and a sequence valve is interposed. A control circuit device for a plurality of hydraulic motors, characterized in that a check valve for allowing flow from the closed circuit to the outgoing path of the main hydraulic motor is interposed in parallel with the sequence valve in the connecting path.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16767982A JPH0227522B2 (en) | 1982-09-28 | 1982-09-28 | FUKUSUKONOYUATSUMOOTANOSEIGYOKAIROSOCHI |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16767982A JPH0227522B2 (en) | 1982-09-28 | 1982-09-28 | FUKUSUKONOYUATSUMOOTANOSEIGYOKAIROSOCHI |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5958205A JPS5958205A (en) | 1984-04-03 |
JPH0227522B2 true JPH0227522B2 (en) | 1990-06-18 |
Family
ID=15854207
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16767982A Expired - Lifetime JPH0227522B2 (en) | 1982-09-28 | 1982-09-28 | FUKUSUKONOYUATSUMOOTANOSEIGYOKAIROSOCHI |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0227522B2 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63190905A (en) * | 1987-01-31 | 1988-08-08 | Hiroshi Sato | Parallel driving type hydraulic motor device and vehicle driven by hydraulic motor |
DE4314813C1 (en) * | 1993-05-05 | 1994-09-01 | Duesterloh Gmbh | Hydraulic circuit |
JP5123658B2 (en) * | 2007-12-28 | 2013-01-23 | 株式会社タグチ工業 | Actuator drive circuit |
JP5282696B2 (en) * | 2009-07-29 | 2013-09-04 | トヨタ車体株式会社 | Rotating device |
JP5685140B2 (en) * | 2011-05-13 | 2015-03-18 | 川崎重工業株式会社 | Hydraulic circuit for hoisting device and hoisting device having the same |
CN102269199B (en) * | 2011-07-13 | 2013-05-01 | 武汉船用机械有限责任公司 | Bidirectional three-speed motor controller |
CN102889260B (en) * | 2012-10-12 | 2015-01-07 | 武汉船用机械有限责任公司 | Controller of electrically controlled three-speed medium voltage motor and operation mode of controller |
-
1982
- 1982-09-28 JP JP16767982A patent/JPH0227522B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPS5958205A (en) | 1984-04-03 |
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