CN103541938A - Hydraulic system - Google Patents
Hydraulic system Download PDFInfo
- Publication number
- CN103541938A CN103541938A CN201310412001.2A CN201310412001A CN103541938A CN 103541938 A CN103541938 A CN 103541938A CN 201310412001 A CN201310412001 A CN 201310412001A CN 103541938 A CN103541938 A CN 103541938A
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- China
- Prior art keywords
- valve
- control valve
- flow control
- hydraulic
- electromagnetic relief
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Abstract
The invention provides a hydraulic system which comprises a pump, a first hydraulic check valve, a second hydraulic check valve, an electro-hydraulic directional control valve, a first compensated flow control valve, a second compensated flow control valve, a hydraulic cylinder, an electromagnetic relief valve and a solenoid directional valve. The electro-hydraulic directional control valve and the electromagnetic relief valve are connected with the pump, the other three phases of the electro-hydraulic directional control valve are communicated with the electromagnetic relief valve, the first compensated flow control valve and the second compensated flow control valve respectively, the hydraulic cylinder is communicated with the first hydraulic check valve and the second hydraulic check valve to form an integrated circuit, and the integrated circuit is connected with the first compensated flow control valve and the second compensated flow control valve. The two ends of the electromagnetic relief valve are connected with the pump and the compensated flow control valves respectively. According to the hydraulic system, on the premise that the oil-returning duct characteristics are ensured, frequent shaking produced when the ladle falls and returns is eliminated, molten iron is prevented from overflowing, safety is guaranteed and cost is reduced.
Description
Technical field
The present invention relates to technical field of hydraulic, be specifically related to a kind of improved hydraulic system.
Background technique
Molten iron tipping car is one of key equipment in hot metal pretreatment technology link, and its effect is that hot-metal bottle first completes the processing of skimming of being stirred in of molten iron on tipping car.Before skimming, need to realize tumbling of hot-metal bottle by two oil hydraulic cylinders.Because load is larger, so the hydraulic circuit of molten iron tipping car has adopted Pilot operated check valve to connect to control hydraulic cylinder speed with throttle valve, and utilizes Pilot operated check valve locking property, realization bag is tumbled and is stopped object accurate, secure localization.But in actual applications, because the oil circuit control of Pilot operated check valve does not carry out external control, receive the restriction of bar cavity pressure, cannot keep constant pressure, thereby stop, shake serious phenomenon while falling during the equipment of generation.
Summary of the invention
The object of the present invention is to provide a kind of hydraulic system that ladle declines and frequently shakes while returning of having eliminated.
The technical solution used in the present invention is: hydraulic system, comprises pump, the first hydraulically-controlled one-way valve, the second hydraulically-controlled one-way valve, electro-hydraulic reversing valve, the first series flow control valve, the second series flow control valve, oil hydraulic cylinder, electromagnetic relief valve, solenoid directional control valve; Electro-hydraulic reversing valve, electromagnetic relief valve are connected with pump, the other three-phase of electro-hydraulic reversing valve is communicated with electromagnetic relief valve, the first series flow control valve, the second series flow control valve respectively, oil hydraulic cylinder is communicated with formation bulk loop with the first hydraulically-controlled one-way valve, the second hydraulically-controlled one-way valve, bulk loop connects the first series flow control valve, the second series flow control valve; Electromagnetic relief valve two ends are connected with pump, series flow control valve respectively.
The hydraulic system that the present invention proposes, in the situation that guaranteeing oil circuit feature, has eliminated the frequent shake that ladle declines while returning, and has avoided molten iron excessive, has guaranteed safety, has reduced cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, 1 couple of the present invention is further described.
As shown in the figure, the hydraulic system that the present invention proposes, comprises pump 1, the first hydraulically-controlled one-way valve 6, the second hydraulically-controlled one-way valve 7, electro-hydraulic reversing valve 3, the first series flow control valve 4, the second series flow control valve 5, oil hydraulic cylinder 8, electromagnetic relief valve 2, solenoid directional control valve 9; Electro-hydraulic reversing valve 3, electromagnetic relief valve 2 are connected with pump 1, the other three-phase of electro-hydraulic reversing valve 3 is communicated with electromagnetic relief valve 2, the first series flow control valve 4, the second series flow control valve 5 respectively, oil hydraulic cylinder 8 is communicated with formation bulk loop with the first hydraulically-controlled one-way valve 6, the second hydraulically-controlled one-way valve 7, bulk loop connects the first series flow control valve 3, the second series flow control valve 4; Electromagnetic relief valve 2 two ends are connected with pump 1, series flow control valve respectively.
The oil circuit control of the first Pilot operated check valve 6, the first Pilot operated check valve 7 draws from pump discharge, by two-position four-way solenoid directional control valve 11, is controlled.When oil hydraulic cylinder rising ladle is toppled over, DT
1energising, solenoid directional control valve 11 must not electricity.DT when oil hydraulic cylinder declines
2, DT
3must be electric, to control oil and enter the first Pilot operated check valve 6, the second Pilot operated check valve 7 control ends, the first Pilot operated check valve 6, the second Pilot operated check valve 7 are opened.Because oil circuit control draws from pump discharge, so oil circuit control is not subject to the interference of oil hydraulic cylinder load variations, the first Pilot operated check valve 6, the second Pilot operated check valve 7 have stable pressure to control oil all the time, the first Pilot operated check valve 6 while having guaranteed that oil hydraulic cylinder declines, the second Pilot operated check valve 7 oppositely opens all the time until position of rest has guaranteed the unimpeded of the main oil circuit of decline process.System after improvement makes molten iron tipping car rise or decline, stop all very steady, has reached manufacturing technique requirent, makes to produce smooth and easy, and has eliminated the major hidden danger of the excessive initiation fire of molten iron.
Claims (1)
1. a hydraulic system, is characterized in that, comprises pump, the first hydraulically-controlled one-way valve, the second hydraulically-controlled one-way valve, electro-hydraulic reversing valve, the first series flow control valve, the second series flow control valve, oil hydraulic cylinder, electromagnetic relief valve, solenoid directional control valve; Electro-hydraulic reversing valve, electromagnetic relief valve are connected with pump, the other three-phase of electro-hydraulic reversing valve is communicated with electromagnetic relief valve, the first series flow control valve, the second series flow control valve respectively, oil hydraulic cylinder is communicated with formation bulk loop with the first hydraulically-controlled one-way valve, the second hydraulically-controlled one-way valve, bulk loop connects the first series flow control valve, the second series flow control valve; Electromagnetic relief valve two ends are connected with pump, series flow control valve respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310412001.2A CN103541938A (en) | 2013-09-11 | 2013-09-11 | Hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310412001.2A CN103541938A (en) | 2013-09-11 | 2013-09-11 | Hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103541938A true CN103541938A (en) | 2014-01-29 |
Family
ID=49965711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310412001.2A Pending CN103541938A (en) | 2013-09-11 | 2013-09-11 | Hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103541938A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279198A (en) * | 2014-11-06 | 2015-01-14 | 威海华东数控股份有限公司 | Anti-collision sudden stop hydraulic system of hydraulic cylinder of grinding machine and control method of anti-collision sudden stop hydraulic system |
| CN104500462A (en) * | 2014-12-08 | 2015-04-08 | 徐州重型机械有限公司 | Speed regulation device and crane superlift deploying control system |
| CN104929998A (en) * | 2015-06-10 | 2015-09-23 | 西北农林科技大学 | Hydraulic system for test bed of mini-type tractor in hilly mountain area |
| CN105240337A (en) * | 2015-10-30 | 2016-01-13 | 湖州织里华宁园艺工程有限公司 | Aloft trimming device for gardens |
| CN105909582A (en) * | 2016-06-30 | 2016-08-31 | 马鞍山市致呈机电有限公司 | Hydraulic system of steel ladle hydraulic turnover device |
| CN106015126A (en) * | 2016-05-31 | 2016-10-12 | 中国航空工业集团公司西安飞机设计研究所 | Device used for driving hydraulic cylinder to quickly act |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201339620Y (en) * | 2009-01-13 | 2009-11-04 | 太原科技大学 | Hydraulic system of full hydraulic metal plate straightener |
-
2013
- 2013-09-11 CN CN201310412001.2A patent/CN103541938A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201339620Y (en) * | 2009-01-13 | 2009-11-04 | 太原科技大学 | Hydraulic system of full hydraulic metal plate straightener |
Non-Patent Citations (1)
| Title |
|---|
| 胡德军等: "KR铁水倾翻车液压系统故障分析与改进", 《液压气动与密封》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279198A (en) * | 2014-11-06 | 2015-01-14 | 威海华东数控股份有限公司 | Anti-collision sudden stop hydraulic system of hydraulic cylinder of grinding machine and control method of anti-collision sudden stop hydraulic system |
| CN104500462A (en) * | 2014-12-08 | 2015-04-08 | 徐州重型机械有限公司 | Speed regulation device and crane superlift deploying control system |
| CN104929998A (en) * | 2015-06-10 | 2015-09-23 | 西北农林科技大学 | Hydraulic system for test bed of mini-type tractor in hilly mountain area |
| CN105240337A (en) * | 2015-10-30 | 2016-01-13 | 湖州织里华宁园艺工程有限公司 | Aloft trimming device for gardens |
| CN106015126A (en) * | 2016-05-31 | 2016-10-12 | 中国航空工业集团公司西安飞机设计研究所 | Device used for driving hydraulic cylinder to quickly act |
| CN106015126B (en) * | 2016-05-31 | 2018-01-30 | 中国航空工业集团公司西安飞机设计研究所 | A kind of device for driving hydraulic cylinder quick acting |
| CN105909582A (en) * | 2016-06-30 | 2016-08-31 | 马鞍山市致呈机电有限公司 | Hydraulic system of steel ladle hydraulic turnover device |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140129 |