CN2876751Y - Electric hydraulic servo-valve hydraulic loader - Google Patents
Electric hydraulic servo-valve hydraulic loader Download PDFInfo
- Publication number
- CN2876751Y CN2876751Y CN 200620023837 CN200620023837U CN2876751Y CN 2876751 Y CN2876751 Y CN 2876751Y CN 200620023837 CN200620023837 CN 200620023837 CN 200620023837 U CN200620023837 U CN 200620023837U CN 2876751 Y CN2876751 Y CN 2876751Y
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- China
- Prior art keywords
- hydraulic cylinder
- loading
- piston rod
- pressure
- hydraulic
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- 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 - Fee Related
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Abstract
The utility model relates to an electric hydraulic servo-valve hydraulic loader. Its characteristics include: The piston rod end of hydraulic stroker (2) is connected with loaded mechanical part (1) via gemel. The mechanical part (1) is fixed; the detection fluid cylinder (8) is connected in parallel with the hydraulic stroker (2) via pipeline, the piston rod of the detection fluid cylinder (8) with shaft shoulder is installed two pressure sensors (6,7) and a detection frame (3) at its ends, and the detection frame (3) is fixed; the round nut (4,5) fix the piston rod of the detection fluid cylinder(8), the detection frame (3) and the pressure sensor (6,7). The utility model is simple and reliable. Besides, it can provide mechanical part with permanent load, pulsating load and alternate load.
Description
Technical field
The utility model relates to a kind of electrohydraulic servo valve hydraulic loading device.
Background technology
Along with machinery manufacturing industry manufactures and designs the development that manufactures and designs towards becoming more meticulous by thick spacious type, the basic component in the mechanical system more and more is subjected to people's attention as the reliability of gear, bearing, axle, standard component etc. and the accurate evaluation work of fatigue lifetime.Because these basic components generally all bear alternate load when work, therefore how applying corresponding alternate load in the fatigue experiment of basic component has accurately and reliably become one of problem that presses for solution.
Summary of the invention
In order to solve the problem of basic component being carried out reliability and fatigue lifetime, the utility model provides a kind of electrohydraulic servo valve hydraulic loading device, this device is not only simple and reliable for structure, and can apply with permanent load, pulsed load and alternate load to mechanical component easily.
The technical scheme that its technical matters that solves the utility model adopts is: the piston rod end of loading hydraulic cylinder is connected with the mechanical component that is loaded by hinge, and mechanical component maintains static; It is in parallel with loading hydraulic cylinder to detect hydraulic cylinder, detect the piston rod tape spool shoulder of hydraulic cylinder, its end is installed two pressure transducers and is detected framework, detects framework and maintains static, and round nut is fixed together piston rod, detection framework, the pressure transducer of hydraulic cylinder.Loading hydraulic cylinder is connected with electrohydraulic servo valve, surplus valve oil pump and fuel tank by pipeline, the detection signal input control system of pressure transducer, and control system is exported control signal to electrohydraulic servo valve.It is in parallel with loading hydraulic cylinder to detect hydraulic cylinder, promptly detects the epicoele oil pressure of hydraulic cylinder and the epicoele oil pressure of loading hydraulic cylinder and equates; Detecting the cavity of resorption oil pressure of hydraulic cylinder and the cavity of resorption oil pressure of loading hydraulic cylinder equates.
Description of drawings
Fig. 1 is an electrohydraulic servo valve hydraulic loading device structural representation;
Fig. 2 is the pulsed load synoptic diagram;
Fig. 3 is the alternate load synoptic diagram.
In Fig. 1,1. mechanical component, 2. loading hydraulic cylinder 3. detects framework, 4. round nut, 5. round nut, 6. pressure transducer, 7. pressure transducer 8. detects hydraulic cylinder, 9. control system, 10. electrohydraulic servo valve, 11. oil pumps, 12. fuel tanks, 13. surplus valves.
Embodiment
Fig. 1 is the disclosed electrohydraulic servo valve hydraulic loading device of a utility model (see figure 1), the piston rod end of loading hydraulic cylinder 2 is connected with the mechanical component 1 that is loaded by hinge, mechanical component 1 maintains static, it is in parallel with loading hydraulic cylinder 2 to detect hydraulic cylinder 8, promptly detects the epicoele oil pressure of hydraulic cylinder 8 and the epicoele oil pressure of loading hydraulic cylinder 2 and equates; Detecting the cavity of resorption oil pressure of hydraulic cylinder 8 and the cavity of resorption oil pressure of loading hydraulic cylinder 2 equates.The piston rod tape spool shoulder of detection hydraulic cylinder 8, its end are installed two pressure transducers 6,7 and are detected framework 3, detect framework 3 and maintain static, and round nut 4,5 is used for the piston rod of hydraulic cylinder 8, detection framework 3, pressure transducer 6,7 are fixed together.When electrohydraulic servo valve 10 was in right position, the hydraulic oil of oil pump 11 pumping out systems entered the cavity of resorption of loading hydraulic cylinder 2, and the piston of loading hydraulic cylinder 2 moves upward, and exerted pressure for mechanical component 1.Pressure transducer 7 can detect the size of instantaneous arbitrarily pressure (oil pressure), and in time with testing result input control system 9, after control system 9 is compared testing result and setting value,, make electrohydraulic servo valve 10 produce action to electrohydraulic servo valve 10 output control signals.If testing result is greater than setting value, then electrohydraulic servo valve 10 is shifted to position, a left side, and pressure oil enters the epicoele of loading hydraulic cylinder 2, and the pressure that loading hydraulic cylinder 2 imposes on mechanical component 1 will reduce; If testing result is less than setting value, then electrohydraulic servo valve 10 continues to remain on right position, and then pressure oil continues to enter the cavity of resorption of loading hydraulic cylinder 2, and the pressure that loading hydraulic cylinder 2 imposes on mechanical component 1 will increase; If testing result equates that with setting value then electrohydraulic servo valve 10 is shifted to meta, the pressure oil that oil pump 11 pumps no longer enters loading hydraulic cylinder 2, and all by surplus valve 13 fuel tank 12 that fails to be convened for lack of a quorum.Above-mentioned course of action is to finish in the extremely short time.
When imposing on mechanical component 1 with pulsation pulling force or pressure, move or move down on the piston rod of loading hydraulic cylinder 2, pressure transducer 6 or 7 can detect the size of oil pressure in each instantaneous loading hydraulic cylinder exactly, promptly detect the big or small (see figure 2) of each instantaneous pulling force that has applied or pressure, and in time export to control system 9, control system 9 will be carried out the comparison of detected value and setting value, with the moving direction and the translational speed of the piston rod that determines next step loading hydraulic cylinder 2, thereby apply pulsed load for mechanical component 1.
When imposing on mechanical component 1 with alternate tension or pressure, total system just can impose on mechanical component 1 with alternate tension or pressure (see figure 3) by the motion almost completely identical when applying pulsed load and the control procedure of speed.
Claims (2)
1. electrohydraulic servo valve hydraulic loading device, comprise mechanical component (1), round nut (4,5) and control system (9), electrohydraulic servo valve (10) is connected with oil pump (11), fuel tank (12), surplus valve (13) by pipeline, it is characterized in that: the piston rod end of loading hydraulic cylinder (2) is connected with the mechanical component that is loaded (1) by hinge, and mechanical component (1) maintains static; It is in parallel by pipeline with loading hydraulic cylinder 2 to detect hydraulic cylinder (8), detects the piston rod tape spool shoulder of hydraulic cylinder (8), and its end is installed two pressure transducers (6,7) and detected framework (3), detects framework (3) and maintains static; Piston rod, detection framework (3), pressure transducer (6,7) that round nut (4,5) will detect hydraulic cylinder (8) are fixed together.
2. electrohydraulic servo valve hydraulic loading system according to claim 1 is characterized in that: it is in parallel with loading hydraulic cylinder (2) to detect hydraulic cylinder (8), promptly detects the epicoele oil pressure of hydraulic cylinder (8) and the epicoele oil pressure of loading hydraulic cylinder (2) and equates; Detecting the cavity of resorption oil pressure of hydraulic cylinder (8) and the cavity of resorption oil pressure of loading hydraulic cylinder (2) equates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620023837 CN2876751Y (en) | 2006-03-17 | 2006-03-17 | Electric hydraulic servo-valve hydraulic loader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620023837 CN2876751Y (en) | 2006-03-17 | 2006-03-17 | Electric hydraulic servo-valve hydraulic loader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2876751Y true CN2876751Y (en) | 2007-03-07 |
Family
ID=37819988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620023837 Expired - Fee Related CN2876751Y (en) | 2006-03-17 | 2006-03-17 | Electric hydraulic servo-valve hydraulic loader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2876751Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101787991A (en) * | 2010-02-10 | 2010-07-28 | 田陆 | Gap compensation method for servo control system |
| CN102183700A (en) * | 2011-02-23 | 2011-09-14 | 河南科技大学 | Controllable loading spectrum hydraulic loading method and loading device therefor |
| CN102840972A (en) * | 2012-09-19 | 2012-12-26 | 大连华锐重工集团股份有限公司 | Hydraulic loading device for mechanical part test table |
| CN104420864A (en) * | 2013-08-29 | 2015-03-18 | 深圳市弗赛特检测设备有限公司 | Drilling tool simulation testing system |
| CN107288940A (en) * | 2016-04-12 | 2017-10-24 | 哈尔滨飞机工业集团有限责任公司 | A kind of servo-actuated protect of displacement carries pilot system |
| CN107621343A (en) * | 2017-09-07 | 2018-01-23 | 北京航空航天大学 | A kind of device for testing dynamic stiffness |
| CN108757599A (en) * | 2018-04-28 | 2018-11-06 | 北京机械设备研究所 | A kind of hydraulic loading system and loading method for airplane ground test platform |
-
2006
- 2006-03-17 CN CN 200620023837 patent/CN2876751Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101787991A (en) * | 2010-02-10 | 2010-07-28 | 田陆 | Gap compensation method for servo control system |
| CN101787991B (en) * | 2010-02-10 | 2013-01-09 | 田陆 | Gap compensation method for servo control system |
| CN102183700A (en) * | 2011-02-23 | 2011-09-14 | 河南科技大学 | Controllable loading spectrum hydraulic loading method and loading device therefor |
| CN102183700B (en) * | 2011-02-23 | 2013-04-24 | 河南科技大学 | Controllable loading spectrum hydraulic loading method and loading device therefor |
| CN102840972A (en) * | 2012-09-19 | 2012-12-26 | 大连华锐重工集团股份有限公司 | Hydraulic loading device for mechanical part test table |
| CN104420864A (en) * | 2013-08-29 | 2015-03-18 | 深圳市弗赛特检测设备有限公司 | Drilling tool simulation testing system |
| CN107288940A (en) * | 2016-04-12 | 2017-10-24 | 哈尔滨飞机工业集团有限责任公司 | A kind of servo-actuated protect of displacement carries pilot system |
| CN107621343A (en) * | 2017-09-07 | 2018-01-23 | 北京航空航天大学 | A kind of device for testing dynamic stiffness |
| CN107621343B (en) * | 2017-09-07 | 2019-11-15 | 北京航空航天大学 | A kind of device for testing dynamic stiffness |
| CN108757599A (en) * | 2018-04-28 | 2018-11-06 | 北京机械设备研究所 | A kind of hydraulic loading system and loading method for airplane ground test platform |
| CN108757599B (en) * | 2018-04-28 | 2020-04-17 | 北京机械设备研究所 | Hydraulic loading system and loading method for airplane ground test bed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |