CN103016465A - Electric-control and hydraulic loading loop - Google Patents
Electric-control and hydraulic loading loop Download PDFInfo
- Publication number
- CN103016465A CN103016465A CN2012105650238A CN201210565023A CN103016465A CN 103016465 A CN103016465 A CN 103016465A CN 2012105650238 A CN2012105650238 A CN 2012105650238A CN 201210565023 A CN201210565023 A CN 201210565023A CN 103016465 A CN103016465 A CN 103016465A
- Authority
- CN
- China
- Prior art keywords
- valve
- electric
- control
- pressure
- loading
- 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.)
- Pending
Links
Abstract
The invention discloses an electric-control and hydraulic loading loop, comprising an oil tank, a hydraulic pump, a one-way valve, an energy accumulator, a pressure sensor, a controller, a proportional pressure valve, an overflowing valve, a two-position two-way electromagnetic valve and a flow sensor. The electric-control and hydraulic loading loop disclosed by the invention has the advantages that the proportional pressure valve is adopted as a pilot valve, the overflow valve is adopted as a loading valve, and the working pressure of the overflow valve is adjusted by changing the working pressure of the proportional pressure valve, so that high-power electric control loading is realized. The electric-control and hydraulic loading loop is beneficial to accurate control of the loading power.
Description
Technical field
The present invention relates to a kind of hydraulic loaded loop, particularly need the hydraulic loaded loop by the accurate controlled loading power of computer.
Background technique
Hydraulic pressure loading device is widely used in the performance test of power unit; Along with the popularizing of Computer Control Technology, power unit performance test load the raising of power control accuracy to loader, the electric-controlled hydraulic loader has become the development trend of hydraulic pressure loading device.
Summary of the invention
Technical problem solved by the invention is to provide electric-controlled hydraulic to load the loop, to solve the shortcoming in the above-mentioned background technology.
Technical problem solved by the invention realizes by the following technical solutions:
Electric-controlled hydraulic loads the loop, comprise fuel tank, oil hydraulic pump, one-way valve, accumulator, pressure transducer, controller, proportional pressure valve, relief valve, two-position two-way solenoid valve and flow transducer, entry end at relief valve is equipped with pressure transducer, outlet end at relief valve is equipped with flow transducer, be parallel with the bi-bit bi-pass normally open solenoid valve at the two ends of relief valve, entry end at one-way valve is equipped with accumulator, outlet end at oil hydraulic pump is equipped with one-way valve, the lower end of oil hydraulic pump is inserted in the fuel tank, pressure transducer, flow transducer, proportional pressure valve all is connected on the controller.
Beneficial effect: adoption rate pressure valve of the present invention is as pilot valve, and controller realizes loading the adjusting of power by the working pressure of change relief valve, thereby realizes that large power electric control loads, and is convenient to hydraulic pressure loading device realization computer control.Entry end at relief valve is connected to pressure transducer, outlet end at relief valve is connected to flow transducer, controller obtains the loading power in hydraulic loaded loop by the output value of real-time detected pressures sensor and flow transducer, and controller adopts certain control algorithm to realize the accurate control of hydraulic loaded power.Entry end at relief valve is connected to accumulator, by the buffer function of accumulator, avoids the pressure surge of oil hydraulic circuit, is conducive to load the accurate control of power.
Description of drawings
Fig. 1 is structure principle chart of the present invention.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Referring to Fig. 1, electric-controlled hydraulic loads the structure principle chart in loop, and electric-controlled hydraulic loads the loop, by fuel tank 1, and oil hydraulic pump 2, one-way valve 3, accumulator 4, pressure transducer 5, controller 6, proportional pressure valve 7, relief valve 8, two-position two-way solenoid valve 9, flow transducer 10 consists of; Proportional pressure valve 7 is used for the working pressure of regulation relief valve 8; When the loading loop was in unloading condition, hydraulic oil was by two-position two-way solenoid valve 9 direct oil sump tanks 1; When system need to load, set loading power by controller 6; Controller 6 detects the loading power that loads the loop in real time by pressure transducer 5 and flow transducer 10; When loading power and with setting power deviation arranged, the working pressure that controller 6 is regulated proportional pressure valve 7 in real time according to certain control algorithm, thus realize the accurate control of loading power; Entrance at relief valve 8 is equipped with accumulator 4; Accumulator 4 is used for the working pressure in stable hydraulic loop, is convenient to the adjusting of hydraulic loaded power; The outlet of oil hydraulic pump 2 is connected to one-way valve 3; One-way valve 3 is used for preventing oil hydraulic circuit hydraulic oil reverse flow.
Loading power by controller 6 initialization systems is 5KW, primer fluid press pump 2, and behind the 5s, the reading of pressure transducer 5 is 5MPa, the reading of flow transducer 10 is 60L/min,
Loading power by controller 6 initialization systems is 20KW, and behind the 5s, the reading of pressure transducer 5 is 15MPa, and the reading of flow transducer 10 is 79L/min,
Loading power by controller 6 initialization systems is 40KW, and behind the 5s, the reading of pressure transducer 5 is 30MPa, and the reading of flow transducer 10 is 78L/min.
More than show and described basic principle of the present invention and major character and advantage of the present invention; the technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications; these changes and improvements all fall in the claimed scope of the invention, and the claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (1)
1. electric-controlled hydraulic loads the loop, comprise fuel tank, oil hydraulic pump, one-way valve, accumulator, pressure transducer, controller, proportional pressure valve, relief valve, two-position two-way solenoid valve and flow transducer, it is characterized in that, entry end at relief valve is equipped with pressure transducer, outlet end at relief valve is equipped with flow transducer, be parallel with the bi-bit bi-pass normally open solenoid valve at the two ends of relief valve, entry end at one-way valve is equipped with accumulator, outlet end at oil hydraulic pump is equipped with one-way valve, the lower end of oil hydraulic pump is inserted in the fuel tank, pressure transducer, flow transducer, proportional pressure valve all is connected on the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105650238A CN103016465A (en) | 2012-12-24 | 2012-12-24 | Electric-control and hydraulic loading loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105650238A CN103016465A (en) | 2012-12-24 | 2012-12-24 | Electric-control and hydraulic loading loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103016465A true CN103016465A (en) | 2013-04-03 |
Family
ID=47965432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105650238A Pending CN103016465A (en) | 2012-12-24 | 2012-12-24 | Electric-control and hydraulic loading loop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103016465A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074842A (en) * | 2014-07-16 | 2014-10-01 | 上海豪高机电科技有限公司 | Digital valve testing system |
| CN104881057A (en) * | 2014-01-28 | 2015-09-02 | 泰思康公司 | Electronic controller with integral vent valve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2742411Y (en) * | 2004-11-04 | 2005-11-23 | 天津鼎盛工程机械有限公司 | Hydraulic loading power measuring device |
| JP3843889B2 (en) * | 2002-05-31 | 2006-11-08 | Ｔｃｍ株式会社 | Work vehicle dynamic damper |
| CN101224625A (en) * | 2007-12-05 | 2008-07-23 | 广东佳明机器有限公司 | High pressure model-locked loop of double movable plate direct press injection machine |
| JP2009190484A (en) * | 2008-02-13 | 2009-08-27 | Yanmar Co Ltd | Vibration control device of industrial machine |
| CN101614623A (en) * | 2009-07-20 | 2009-12-30 | 北京理工大学 | A kind of positive and negative drawing type electro-hydraulic proportional loading device of testing steering wheel |
| CN102155442A (en) * | 2011-03-18 | 2011-08-17 | 湖南工程学院 | Control loop of adjustable hydraulic loader |
| CN202057491U (en) * | 2011-04-07 | 2011-11-30 | 佛山市顺德区中意液压有限公司 | Energy saving hydraulic motor performance testboard apparatus |
| WO2011158733A1 (en) * | 2010-06-18 | 2011-12-22 | 日立建機株式会社 | Work machine |
-
2012
- 2012-12-24 CN CN2012105650238A patent/CN103016465A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3843889B2 (en) * | 2002-05-31 | 2006-11-08 | Ｔｃｍ株式会社 | Work vehicle dynamic damper |
| CN2742411Y (en) * | 2004-11-04 | 2005-11-23 | 天津鼎盛工程机械有限公司 | Hydraulic loading power measuring device |
| CN101224625A (en) * | 2007-12-05 | 2008-07-23 | 广东佳明机器有限公司 | High pressure model-locked loop of double movable plate direct press injection machine |
| JP2009190484A (en) * | 2008-02-13 | 2009-08-27 | Yanmar Co Ltd | Vibration control device of industrial machine |
| CN101614623A (en) * | 2009-07-20 | 2009-12-30 | 北京理工大学 | A kind of positive and negative drawing type electro-hydraulic proportional loading device of testing steering wheel |
| WO2011158733A1 (en) * | 2010-06-18 | 2011-12-22 | 日立建機株式会社 | Work machine |
| CN102155442A (en) * | 2011-03-18 | 2011-08-17 | 湖南工程学院 | Control loop of adjustable hydraulic loader |
| CN202057491U (en) * | 2011-04-07 | 2011-11-30 | 佛山市顺德区中意液压有限公司 | Energy saving hydraulic motor performance testboard apparatus |
Non-Patent Citations (3)
| Title |
|---|
| 张红涛等: "《液压模拟加载与测试系统的设计与试验研究》", 《液压与气动》 * |
| 张红涛等: "《电液比例溢流阀在液压加载系统中的应用》", 《液压气动与密封》 * |
| 沈瑜等: "《基于数字控制器的电液比例控制系统设计》", 《液压与气动》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104881057A (en) * | 2014-01-28 | 2015-09-02 | 泰思康公司 | Electronic controller with integral vent valve |
| CN104074842A (en) * | 2014-07-16 | 2014-10-01 | 上海豪高机电科技有限公司 | Digital valve testing system |
| CN104074842B (en) * | 2014-07-16 | 2016-04-13 | 上海豪高机电科技有限公司 | Digital valve pilot system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102155442B (en) | Control loop of adjustable hydraulic loader | |
| CN201858218U (en) | Oil return device for engineering machinery | |
| CN207568956U (en) | Deflect the hydraulic system of pulse test bench | |
| CN206467707U (en) | A kind of excavator energy regenerating and utilize system | |
| CN103016465A (en) | Electric-control and hydraulic loading loop | |
| CN202659478U (en) | Load pressure feedback equipment for load-sensing pump and engineering machinery | |
| CN202971075U (en) | Load sensitive pump, load sensitive hydraulic system and concrete pumping equipment | |
| CN201890108U (en) | Proportional synchronous lifting system | |
| CN203230678U (en) | Hydraulic actuator inlet and outlet flow pressure independent controlling system | |
| CN204533014U (en) | Ioad-sensing control hydraulic system | |
| CN204175686U (en) | A kind of bender hydraulic system | |
| CN103423217A (en) | Low-noise hydraulic load simulation device | |
| CN103256271A (en) | Single-action hydraulic oil cylinder tractor suspension hydraulic system based on electromagnetic digital valve | |
| CN203189371U (en) | Multi-functional three-way flow control valve used for concrete pump truck | |
| CN202360494U (en) | Bending machine hydraulic system | |
| CN205173095U (en) | Clapper die spotting press multistage control mode locking pressurize hydraulic control system | |
| CN205190392U (en) | Support cylinder hydraulic system of super large jumbo | |
| CN203430911U (en) | Pressure maintaining system for hydraulic machine | |
| CN208966746U (en) | A kind of Ioad-sensing control valve block | |
| CN105275895A (en) | Hydraulic driving system achieving pressure adjustment | |
| CN205190375U (en) | Pressure adjustable hydraulic drive system | |
| CN202628629U (en) | Automatic pipeline pressure regulating device | |
| CN105298944A (en) | Supporting oil cylinder system with pressure maintaining function | |
| CN202579390U (en) | Asphalt proportional solenoid valve for asphalt distribution truck | |
| CN205260460U (en) | Slurry agitator hydraulic system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130403 |