CN102705280A - Hydraulic circuit avoiding hydraulic impact from causing out-of-tolerance of double-cylinder movement stroke - Google Patents
Hydraulic circuit avoiding hydraulic impact from causing out-of-tolerance of double-cylinder movement stroke Download PDFInfo
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- CN102705280A CN102705280A CN2012102101614A CN201210210161A CN102705280A CN 102705280 A CN102705280 A CN 102705280A CN 2012102101614 A CN2012102101614 A CN 2012102101614A CN 201210210161 A CN201210210161 A CN 201210210161A CN 102705280 A CN102705280 A CN 102705280A
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- directional control
- way solenoid
- solenoid directional
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Abstract
The invention discloses a hydraulic circuit avoiding hydraulic impact from causing out-of-tolerance of a double-cylinder movement stroke. The hydraulic circuit includes an oil cylinder A (1), an oil cylinder B (2), a flow equalizing valve (3), a three-position four-way electromagnetic directional valve (4) and a one-way balance valve (5), and further includes an electromagnetic throttle valve (6). An outlet pipeline of the three-position four-way electromagnetic directional valve (4) is connected with an inlet pipeline of the electromagnetic throttle valve (6), and an outlet of the one-way balance valve (5) is connected with a rod cavity of the oil cylinder A (1) and a rod cavity of the oil cylinder B (2) through pipelines. When the hydraulic circuit operates, oil passes through the three-position four-way electromagnetic directional valve (4) and then enters the electromagnetic throttle valve (6), is throttled through a throttle in the electromagnetic throttle valve (6) to be buffered, passes through the flow equalizing valve (3) and the three-position four-way electromagnetic directional valve (4), and returns. The hydraulic circuit is provided with a simple structure, the reliability is good, the water hammer is effectively avoided, and the double-cylinder operation position precision is improved.
Description
Technical field
The present invention relates to a kind of oil hydraulic circuit, particularly a kind ofly avoid hydraulic shock to cause the oil hydraulic circuit that the twin-tub movement travel is overproof.
Background technique
The past car launcher adopts two oil cylinders to play perpendicular launching tube usually, and two oil cylinders play perpendicular ring through oil cylinder and link to each other with launching tube, and launching tube is risen perpendicular behind emission state by transport state, play perpendicular ring and free with launching tube.In freeing the operating process of perpendicular ring, play the perpendicular oil cylinder piston bar certain displacement that need bounce back.Playing perpendicular oil hydraulic circuit comprises: oil cylinder A, oil cylinder B, current-sharing valve, three position four-way directional control valve, unidirectional equilibrium valve; Because 3-position 4-way solenoid directional control valve one end powers up during retraction, this end outage of three position four-way directional control valve when putting in place, this process operating time is short; And flow system flow is bigger; Do not play the link of shock absorbing effect in the loop, three position four-way directional control valve powers up, can produce " water hammer " phenomenon in the power process, causes oil cylinder stroke overproof.
Summary of the invention
The object of the present invention is to provide and a kind ofly avoid hydraulic shock to cause the oil hydraulic circuit that the twin-tub movement travel is overproof, solve hydraulic shock and cause the problem that the twin-tub movement travel is overproof.
A kind ofly avoid hydraulic shock to cause the oil hydraulic circuit that the twin-tub movement travel is overproof, comprising: oil cylinder A, oil cylinder B, current-sharing valve, 3-position 4-way solenoid directional control valve, unidirectional equilibrium valve also comprise: electromagnetic throttle valve.
The export pipeline of 3-position 4-way solenoid directional control valve is connected with the inlet ductwork of electromagnetic throttle valve; The export pipeline of electromagnetic throttle valve is connected with the inlet ductwork of unidirectional equilibrium valve; Pipeline is connected between the rod chamber of the rod chamber of oil cylinder A and oil cylinder B; The outlet of unidirectional equilibrium valve is connected with the rod chamber of oil cylinder A, the rod chamber pipeline of oil cylinder B respectively; The rodless cavity of the rodless cavity of oil cylinder A, oil cylinder B is connected with the inlet ductwork of current-sharing valve respectively, and the outlet of current-sharing valve is connected with 3-position 4-way solenoid directional control valve pipeline.
During oil hydraulic circuit work, 3-position 4-way solenoid directional control valve one end powers up, and electromagnetic throttle valve powers up; And then fluid get into electromagnetic throttle valve behind the 3-position 4-way solenoid directional control valve, through the restriction in the electromagnetic throttle valve fluid is carried out throttling, plays buffer function; Get into the rod chamber of oil cylinder A and the rod chamber of oil cylinder B through unidirectional equilibrium valve again; Make the piston rod withdrawal of oil cylinder A, oil cylinder B, stroke puts the back in place earlier with the electromagnetic throttle valve outage, the 3-position 4-way solenoid directional control valve is cut off the power supply again.Fluid is through current-sharing valve, the oil return of 3-position 4-way solenoid directional control valve.Because electromagnetic throttle valve to the throttling action of fluid, has been avoided powering up in the 3-position 4-way solenoid directional control valve short time, cutting off the power supply to the hydraulic shock of oil cylinder A, oil cylinder B generation.
The present invention is simple in structure, and good reliability can effectively be avoided water hammer, has improved twin-tub working position precision.
Description of drawings
Fig. 1 is a kind of to avoid hydraulic shock to cause the oil hydraulic circuit structural representation that the twin-tub movement travel is overproof.
1. oil cylinder A 2. oil cylinder B 3. current-sharing valves 4. 3-position 4-way solenoid directional control valves 5. unidirectional equilibrium valve 6. electromagnetic throttle valves.
Embodiment
A kind ofly avoid hydraulic shock to cause the oil hydraulic circuit that the twin-tub movement travel is overproof, comprising: oil cylinder A1, oil cylinder B2, current-sharing valve 3,3-position 4-way solenoid directional control valve 4, unidirectional equilibrium valve 5 also comprise: electromagnetic throttle valve 6.
The export pipeline of 3-position 4-way solenoid directional control valve 4 is connected with the inlet ductwork of electromagnetic throttle valve 6; The export pipeline of electromagnetic throttle valve 6 is connected with the inlet ductwork of unidirectional equilibrium valve 5; Pipeline is connected between the rod chamber of the rod chamber of oil cylinder A1 and oil cylinder B 2; The outlet of unidirectional equilibrium valve 5 is connected with the rod chamber of oil cylinder A1, the rod chamber pipeline of oil cylinder B 2 respectively; The rodless cavity of the rodless cavity of oil cylinder A1, oil cylinder B2 is connected with the inlet ductwork of current-sharing valve 3 respectively, and the outlet of current-sharing valve 3 is connected with 3-position 4-way solenoid directional control valve 4 pipelines.
During oil hydraulic circuit work, 3-position 4-way solenoid directional control valve 4 one ends power up, and electromagnetic throttle valve 6 powers up; And then fluid get into electromagnetic throttle valve 6 behind 3-position 4-way solenoid directional control valve 4, through the restriction in the electromagnetic throttle valve 6 fluid is carried out throttling, plays buffer function; Get into the rod chamber of oil cylinder A1 and the rod chamber of oil cylinder B2 through unidirectional equilibrium valve 5 again; Make the piston rod withdrawal of oil cylinder A1, oil cylinder B2, stroke puts the back in place earlier with electromagnetic throttle valve 6 outages, again with 4 outages of 3-position 4-way solenoid directional control valve.Fluid is through current-sharing valve 3,4 oil returns of 3-position 4-way solenoid directional control valve.Since the throttling action of 6 pairs of fluid of electromagnetic throttle valve, the hydraulic shock of having avoided the 3-position 4-way solenoid directional control valve to power up in 4 short time, cut off the power supply oil cylinder A1, oil cylinder B2 are produced.
Claims (1)
1. avoid hydraulic shock to cause the oil hydraulic circuit that the twin-tub movement travel is overproof for one kind; Comprise: oil cylinder A (1), oil cylinder B (2), current-sharing valve (3), 3-position 4-way solenoid directional control valve (4), unidirectional equilibrium valve (5) is characterized in that also comprising: electromagnetic throttle valve (6);
The export pipeline of 3-position 4-way solenoid directional control valve (4) is connected with the inlet ductwork of electromagnetic throttle valve (6); The export pipeline of electromagnetic throttle valve (6) is connected with the inlet ductwork of unidirectional equilibrium valve (5); Pipeline is connected between the rod chamber of oil cylinder A (1) and the rod chamber of oil cylinder B (2); The outlet of unidirectional equilibrium valve (5) is connected with the rod chamber of oil cylinder A (1), the rod chamber pipeline of oil cylinder B (2) respectively; The rodless cavity of the rodless cavity of oil cylinder A (1), oil cylinder B (2) is connected with the inlet ductwork of current-sharing valve (3) respectively, and the outlet of current-sharing valve (3) is connected with 3-position 4-way solenoid directional control valve (4) pipeline;
During oil hydraulic circuit work; 3-position 4-way solenoid directional control valve (4) one ends power up, and electromagnetic throttle valve (6) powers up, and and then fluid get into electromagnetic throttle valve (6) behind 3-position 4-way solenoid directional control valve (4); Restriction through in the electromagnetic throttle valve (6) carries out throttling with fluid; Play buffer function, get into the rod chamber of oil cylinder A (1) and the rod chamber of oil cylinder B (2) through unidirectional equilibrium valve (5) again, make the piston rod withdrawal of oil cylinder A (1), oil cylinder B (2); Stroke puts the back in place earlier with electromagnetic throttle valve (6) outage, 3-position 4-way solenoid directional control valve (4) is cut off the power supply again; Fluid is through current-sharing valve (3), 3-position 4-way solenoid directional control valve (4) oil return; Because the hydraulic shock that electromagnetic throttle valve (6) to the throttling action of fluid, has avoided the 3-position 4-way solenoid directional control valve to power up in (4) short time, cut off the power supply oil cylinder A (1), oil cylinder B (2) are produced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102101614A CN102705280A (en) | 2012-06-25 | 2012-06-25 | Hydraulic circuit avoiding hydraulic impact from causing out-of-tolerance of double-cylinder movement stroke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102101614A CN102705280A (en) | 2012-06-25 | 2012-06-25 | Hydraulic circuit avoiding hydraulic impact from causing out-of-tolerance of double-cylinder movement stroke |
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| Publication Number | Publication Date |
|---|---|
| CN102705280A true CN102705280A (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102101614A Pending CN102705280A (en) | 2012-06-25 | 2012-06-25 | Hydraulic circuit avoiding hydraulic impact from causing out-of-tolerance of double-cylinder movement stroke |
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| CN (1) | CN102705280A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134091A (en) * | 2015-10-15 | 2015-12-09 | 海城市石油机械制造有限公司 | Lifting and lowering buffer control device for derrick of drilling machine and use method thereof |
| CN106704281A (en) * | 2017-01-24 | 2017-05-24 | 长沙通石达机械制造有限公司 | Combined rope sawing machine |
| CN116447378A (en) * | 2023-06-15 | 2023-07-18 | 威飞海洋装备制造有限公司 | Step driving device for underwater throttle valve of double-acting oil cylinder and using method of step driving device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004098751A (en) * | 2002-09-05 | 2004-04-02 | Kyokuto Kaihatsu Kogyo Co Ltd | Hydraulic system for truck |
| JP2008286306A (en) * | 2007-05-17 | 2008-11-27 | Nippon Lift Kk | Power unit for lifting device |
| CN101315088A (en) * | 2008-07-17 | 2008-12-03 | 江苏科行环境工程技术有限公司 | Horizontal roller hydraulic circuit system with pressure-relief protection function |
| CN201495049U (en) * | 2009-09-29 | 2010-06-02 | 四川建设机械（集团）股份有限公司 | Jacking actuating unit for stacker crane |
| CN102442528A (en) * | 2011-09-19 | 2012-05-09 | 大连维乐液压制造有限公司 | Hydraulic station for feeding trolley |
-
2012
- 2012-06-25 CN CN2012102101614A patent/CN102705280A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004098751A (en) * | 2002-09-05 | 2004-04-02 | Kyokuto Kaihatsu Kogyo Co Ltd | Hydraulic system for truck |
| JP2008286306A (en) * | 2007-05-17 | 2008-11-27 | Nippon Lift Kk | Power unit for lifting device |
| CN101315088A (en) * | 2008-07-17 | 2008-12-03 | 江苏科行环境工程技术有限公司 | Horizontal roller hydraulic circuit system with pressure-relief protection function |
| CN201495049U (en) * | 2009-09-29 | 2010-06-02 | 四川建设机械（集团）股份有限公司 | Jacking actuating unit for stacker crane |
| CN102442528A (en) * | 2011-09-19 | 2012-05-09 | 大连维乐液压制造有限公司 | Hydraulic station for feeding trolley |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134091A (en) * | 2015-10-15 | 2015-12-09 | 海城市石油机械制造有限公司 | Lifting and lowering buffer control device for derrick of drilling machine and use method thereof |
| CN106704281A (en) * | 2017-01-24 | 2017-05-24 | 长沙通石达机械制造有限公司 | Combined rope sawing machine |
| CN106704281B (en) * | 2017-01-24 | 2018-09-21 | 长沙通石达机械制造有限公司 | Combined rope saw |
| CN116447378A (en) * | 2023-06-15 | 2023-07-18 | 威飞海洋装备制造有限公司 | Step driving device for underwater throttle valve of double-acting oil cylinder and using method of step driving device |
| CN116447378B (en) * | 2023-06-15 | 2023-09-19 | 威飞海洋装备制造有限公司 | Step driving device for underwater throttle valve of double-acting oil cylinder and using method of step driving device |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121003 |