CN107843483A - A kind of high-frequency electrohydraulic servo dynamic stiffness tester - Google Patents
A kind of high-frequency electrohydraulic servo dynamic stiffness tester Download PDFInfo
- Publication number
- CN107843483A CN107843483A CN201711262707.XA CN201711262707A CN107843483A CN 107843483 A CN107843483 A CN 107843483A CN 201711262707 A CN201711262707 A CN 201711262707A CN 107843483 A CN107843483 A CN 107843483A
- Authority
- CN
- China
- Prior art keywords
- actuator
- machine body
- main machine
- fixed
- dynamic stiffness
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention discloses a kind of high-frequency electrohydraulic servo dynamic stiffness tester, including main machine body, two leads are vertically fixed in the surface both sides of main machine body, hoisting cross beam is arranged with lead, main machine body side wall is fixed with hydraulic lifting cylinder, the clutch end of hydraulic lifting cylinder is fixedly connected with the bottom of hoisting cross beam, hydraulic lifting cylinder connection hydraulic station；The surface of hoisting cross beam is fixed with actuator, and the top piston rod of actuator is provided with displacement transducer, and the lower end piston rod of actuator is provided with upper fixture, actuator connection hydraulic station, displacement transducer connection switch board；The surface middle part of main machine body is fixed with pressure sensor, and pressure sensor is provided with lower clamp.The present invention acts on various action components by the hydraulic oil of hydraulic station and carries out dynamic stiffness test to measured workpiece, the alternating force exported in test process is controllable, and measuring multi-group data by multiple CYCLIC LOADING makes measurement result more accurate, and performance safety is reliable, and easy to operate.
Description
Technical field
The present invention, which relates to, belongs to mechanical oscillation and testing field, and a kind of high-frequency electrohydraulic servo dynamic stiffness tester.
Background technology
Dynamic stiffness tester is set as the standard of detection test specimen mechanical characteristic, prediction fatigue Life and fatigue limit
It is standby, there is years development history.According to the different modes for producing alternate load, dynamic stiffness tester major mechanical formula dynamic stiffness
Tester, pneumatic type dynamic stiffness tester, three kinds of electromagnetic type dynamic stiffness tester.However, the frequency of mechanical dynamic stiffness tester
Rate is low, the alternate load wave distortion of pneumatic type dynamic stiffness tester output is big, electromagnetic type dynamic stiffness tester production cost is high
It is small etc. with power.And electro-hydraulic servo dynamic stiffness tester the shortcomings that being entirely capable of overcoming above-mentioned several dynamic stiffness testers.
The content of the invention
It is an object of the invention to provide a kind of high-frequency electrohydraulic servo dynamic stiffness tester, the tester passes through hydraulic station
Hydraulic oil acts on various action components and dynamic stiffness test is carried out to measured workpiece, and the alternating force exported in test process is controllable,
And measuring multi-group data by multiple CYCLIC LOADING makes measurement result more accurate, and performance safety is reliable, and easy to operate.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of high-frequency electrohydraulic servo dynamic stiffness tester, including main machine body, the surface both sides of main machine body are vertically fixed
There are two leads being oppositely arranged, hoisting cross beam is arranged with lead, main machine body side wall is fixed with hydraulic lifting cylinder, liquid
The clutch end of pressure lift cylinders is fixedly connected with the bottom of hoisting cross beam, hydraulic lifting cylinder connection hydraulic station；
The surface of the hoisting cross beam is fixed with actuator, and the top piston rod of actuator is provided with displacement transducer, makees
The lower end piston rod of dynamic device is provided with upper fixture, actuator connection hydraulic station, displacement transducer connection switch board；
The surface middle part of the main machine body is fixed with pressure sensor, and pressure sensor is provided with lower clamp, lower clamp
It is engaged with upper fixture and fixation is clamped to measured workpiece.
Further, the main machine body bottom four corners are fixed with shock-absorbing foot pad.
Further, the surface middle part of the hoisting cross beam is provided with through hole, and actuator is fixed in through hole, under actuator
End piston rod is connected through through hole with upper fixture.
Further, the main machine body surface middle part is provided with T-slot, and pressure sensor is secured by bolts in T-slot
In.
Beneficial effects of the present invention：
The alternating download load forces that the present invention exports are big：Compared to other machineries, pneumatic and electromagnetic driven rigidity testing instrument, of the same race
Under volume, the output alternating download load forces of electro-hydraulic servo tester can reach several meganewtons, be in all these dynamic stiffness testers
Maximum.
The tester of the present invention can not only test dynamic stiffness, it can also be used to the test of static rigidity.
The present invention is provided with switch board and make it that the alternating download load forces property of output is controllable, test specimen can be drawn, pressed, drawn-
Pressure test, and the alternate load waveform exported is controllable, by the digital control and closed-loop control to electrohydraulic servo valve, can adjust
Make the alternate load waveform of output.
The present invention measures multi-group data by multiple CYCLIC LOADING makes measurement result more accurate, and performance safety is reliable, and grasps
Make easy.
The core component servo actuator that the present invention tests has buffer unit, ensures the steady of high frequency dynamic stiffness test process
It is qualitative.
Brief description of the drawings
The present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is dynamic stiffness tester structural representation of the present invention.
Embodiment
A kind of high-frequency electrohydraulic servo dynamic stiffness tester, as shown in figure 1, including main machine body 1, the bottom four of main machine body 1
Angle is fixed with shock-absorbing foot pad 2, and the surface both sides of main machine body 1 are vertically and fixedly provided with two leads being oppositely arranged 3, lead 3
On be arranged with hoisting cross beam 4, the side wall of main machine body 1 is fixed with hydraulic lifting cylinder 5, the clutch end and liter of hydraulic lifting cylinder 5
The bottom of drop crossbeam 4 is fixedly connected, and hydraulic lifting cylinder 5 connects hydraulic station 6, hydraulic lifting cylinder 5 is provided by hydraulic station 6 dynamic
Power so that the clutch end of hydraulic lifting cylinder 5 drives hoisting cross beam 4 to be moved up and down along lead 3；
The surface of the hoisting cross beam 4 is fixed with actuator 7, and the top piston rod of actuator 7 is provided with displacement transducer
9, the lower end piston rod of actuator 7 is provided with upper fixture 10, and actuator 7 connects hydraulic station 6, and hydraulic station 6 is that the offer of actuator 7 is dynamic
Power realizes that the piston of actuator 7 is reciprocating, and displacement transducer 9 connects switch board 8；Further, in the surface of hoisting cross beam 4
Portion is provided with through hole, and actuator 7 is fixed in through hole, and the lower end piston rod of actuator 7 is connected through through hole with upper fixture 10；
The surface middle part of the main machine body 1 is fixed with pressure sensor 11, it is preferable that the surface middle part of main machine body 1 is opened
There is T-slot, pressure sensor 11 is secured by bolts in T-slot, can be positioned by T-slot, pressure sensor 11
Lower clamp 12 is provided with, lower clamp 12 and upper fixture 10 are engaged and are clamped fixation to measured workpiece；
The specific test process of the dynamic stiffness tester is：
Hydraulic station 6 is that lifting hydraulic cylinder 5 provides power, and lifting hydraulic cylinder 5 controls hoisting cross beam 4 to be lifted on lead 3,
The test space is adjusted according to the specification of measured workpiece, workpiece is installed in upper fixture 10 and lower clamp 12, passes through upper fixture 10
Measured workpiece is fixed with lower clamp 12, then switch board 8 makes work by the pressure and flow of servo valve control hydraulic oil
The dynamic piston of device 7 is reciprocating, and to workpiece CYCLIC LOADING, simultaneous displacement sensor 9 and pressure sensor 11 measure workpiece
Measured workpiece dynamic stiffness is calculated through control software in deformation and the multi-group data of stress, data transfer to switch board 8.
Above content is only to structure example of the present invention and explanation, affiliated those skilled in the art couple
Described specific embodiment is made various modifications or supplement or substituted using similar mode, without departing from invention
Structure surmounts scope defined in the claims, all should belong to protection scope of the present invention.
Claims (4)
1. a kind of high-frequency electrohydraulic servo dynamic stiffness tester, it is characterised in that including main machine body (1), the table of main machine body (1)
Face both sides are vertically and fixedly provided with two leads being oppositely arranged (3), and hoisting cross beam (4), main machine body are arranged with lead (3)
(1) side wall is fixed with hydraulic lifting cylinder (5), and the clutch end of hydraulic lifting cylinder (5) is fixed with the bottom of hoisting cross beam (4) to be connected
Connect, hydraulic lifting cylinder (5) connection hydraulic station (6)；
The surface of the hoisting cross beam (4) is fixed with actuator (7), and the top piston rod of actuator (7) is provided with displacement sensing
Device (9), the lower end piston rod of actuator (7) are provided with upper fixture (10), actuator (7) connection hydraulic station (6), displacement transducer
(9) switch board (8) is connected；
The surface middle part of the main machine body (1) is fixed with pressure sensor (11), and pressure sensor (11) is provided with lower clamp
(12), lower clamp (12) and upper fixture (10) are engaged and are clamped fixation to measured workpiece.
A kind of 2. high-frequency electrohydraulic servo dynamic stiffness tester according to claim 1, it is characterised in that the main machine body
(1) bottom four corners are fixed with shock-absorbing foot pad (2).
A kind of 3. high-frequency electrohydraulic servo dynamic stiffness tester according to claim 1, it is characterised in that the hoisting cross beam
(4) surface middle part is provided with through hole, and actuator (7) is fixed in through hole, the lower end piston rod of actuator (7) through through hole with it is upper
Fixture (10) is connected.
A kind of 4. high-frequency electrohydraulic servo dynamic stiffness tester according to claim 1, it is characterised in that the main machine body
(1) surface middle part is provided with T-slot, and pressure sensor (11) is secured by bolts in T-slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711262707.XA CN107843483A (en) | 2017-12-04 | 2017-12-04 | A kind of high-frequency electrohydraulic servo dynamic stiffness tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711262707.XA CN107843483A (en) | 2017-12-04 | 2017-12-04 | A kind of high-frequency electrohydraulic servo dynamic stiffness tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107843483A true CN107843483A (en) | 2018-03-27 |
Family
ID=61664379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711262707.XA Pending CN107843483A (en) | 2017-12-04 | 2017-12-04 | A kind of high-frequency electrohydraulic servo dynamic stiffness tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107843483A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109799096A (en) * | 2019-03-22 | 2019-05-24 | 上汽通用五菱汽车股份有限公司 | A kind of detection device of automobile oil filler cap vertical stiffness |
| CN110375703A (en) * | 2019-06-05 | 2019-10-25 | 国家电网有限公司 | Bearing shell combined transformation detection device and method |
| CN111537170A (en) * | 2020-05-21 | 2020-08-14 | 北京航空航天大学 | Dynamic stiffness testing method for servo actuator |
| CN114279854A (en) * | 2021-12-22 | 2022-04-05 | 健研检测集团有限公司 | Testing method of stiffness adjusting device of pile raft |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU63933U1 (en) * | 2007-02-01 | 2007-06-10 | Открытое акционерное общество "Специальное конструкторское бюро испытательных машин" (ОАО "СКБИМ") | TEST MACHINE LOADER |
| CN202928933U (en) * | 2012-04-19 | 2013-05-08 | 深圳市瑞格尔仪器有限公司 | Titanium alloy stress corrosion fatigue test machine |
| CN203772527U (en) * | 2013-11-28 | 2014-08-13 | 同济大学 | Engine rubber mount dynamic stiffness testing device |
| CN106680120A (en) * | 2017-01-10 | 2017-05-17 | 浙江理工大学 | High-frequency electro-hydraulic servo fatigue testing machine |
| CN206593957U (en) * | 2017-04-06 | 2017-10-27 | 济南文腾试验仪器有限公司 | A kind of electro-hydraulic servo testing machine for possessing hydraulic lifting clamping structure |
| CN107314896A (en) * | 2017-08-03 | 2017-11-03 | 石家庄铁道大学 | For vehicle suspension leaf spring three-dimensional Dynamic performance examination equipment and its application |
| CN207502283U (en) * | 2017-12-04 | 2018-06-15 | 滁州汽车与家电技术及装备研究院 | A kind of high-frequency electrohydraulic servo dynamic stiffness tester |
-
2017
- 2017-12-04 CN CN201711262707.XA patent/CN107843483A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU63933U1 (en) * | 2007-02-01 | 2007-06-10 | Открытое акционерное общество "Специальное конструкторское бюро испытательных машин" (ОАО "СКБИМ") | TEST MACHINE LOADER |
| CN202928933U (en) * | 2012-04-19 | 2013-05-08 | 深圳市瑞格尔仪器有限公司 | Titanium alloy stress corrosion fatigue test machine |
| CN203772527U (en) * | 2013-11-28 | 2014-08-13 | 同济大学 | Engine rubber mount dynamic stiffness testing device |
| CN106680120A (en) * | 2017-01-10 | 2017-05-17 | 浙江理工大学 | High-frequency electro-hydraulic servo fatigue testing machine |
| CN206593957U (en) * | 2017-04-06 | 2017-10-27 | 济南文腾试验仪器有限公司 | A kind of electro-hydraulic servo testing machine for possessing hydraulic lifting clamping structure |
| CN107314896A (en) * | 2017-08-03 | 2017-11-03 | 石家庄铁道大学 | For vehicle suspension leaf spring three-dimensional Dynamic performance examination equipment and its application |
| CN207502283U (en) * | 2017-12-04 | 2018-06-15 | 滁州汽车与家电技术及装备研究院 | A kind of high-frequency electrohydraulic servo dynamic stiffness tester |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109799096A (en) * | 2019-03-22 | 2019-05-24 | 上汽通用五菱汽车股份有限公司 | A kind of detection device of automobile oil filler cap vertical stiffness |
| CN110375703A (en) * | 2019-06-05 | 2019-10-25 | 国家电网有限公司 | Bearing shell combined transformation detection device and method |
| CN111537170A (en) * | 2020-05-21 | 2020-08-14 | 北京航空航天大学 | Dynamic stiffness testing method for servo actuator |
| CN111537170B (en) * | 2020-05-21 | 2021-06-15 | 北京航空航天大学 | Dynamic stiffness testing method for servo actuator |
| CN114279854A (en) * | 2021-12-22 | 2022-04-05 | 健研检测集团有限公司 | Testing method of stiffness adjusting device of pile raft |
| CN114279854B (en) * | 2021-12-22 | 2024-05-24 | 健研检测集团有限公司 | Testing method of rigidity adjusting device of pile raft |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107843483A (en) | A kind of high-frequency electrohydraulic servo dynamic stiffness tester | |
| CN201138275Y (en) | Automatic test apparatus for microcomputer controlled spring | |
| CN106706207B (en) | A kind of step force generating apparatus for force snesor dynamic calibration | |
| CN204255765U (en) | A kind of load test device of structural member otic placode | |
| CN107917123A (en) | A kind of hydraulic valve is tired and high pressure resistant testing stand | |
| CN103245458A (en) | Half-sine quasi-static calibration device of force sensor | |
| CN102944419A (en) | Ball screw pair reliability test stand provided with electro-hydraulic servo loading devices | |
| CN202916090U (en) | Ballscrew pair reliability test bed having electro-hydraulic servo loading devices | |
| CN101692027A (en) | Universal material testing machine for variable rotating speed pump control hydraulic servo loading system | |
| CN208780607U (en) | A kind of Portable Automatic loading wall heat insulation material scene binding strength detecting instrument | |
| CN207502283U (en) | A kind of high-frequency electrohydraulic servo dynamic stiffness tester | |
| CN110441157B (en) | Rock confining pressure loading device for laser drilling experiment | |
| CN206609588U (en) | A kind of large-scale bridge support dynamic test system | |
| CN205957946U (en) | Measuring device is filled up in differential mechanism equipment selection | |
| CN110672436B (en) | Compression-shear testing machine | |
| CN105692378A (en) | Elevator no-load balance coefficient detection device based on hydraulic cylinder direct jacking manner | |
| CN106644329B (en) | 120MN bridge support testing machine for high-precision dynamic measurement | |
| CN108426768B (en) | A kind of accurate centering control method in interior true triaxial test rock sample position | |
| CN102645329A (en) | Electric liquid harmonic oscillation high frequency fatigue-testing machine and control method of electric liquid harmonic oscillation high frequency fatigue-testing machine | |
| CN112461421A (en) | Instrument for measuring expansion force and expansion displacement of material | |
| CN2852095Y (en) | Jack dynamic load tester | |
| CN204944746U (en) | There is the elevator no-load coefficient of balance pick-up unit from return function | |
| CN202676555U (en) | Creep testing machine | |
| CN210982079U (en) | Compression-shear testing machine | |
| CN217084519U (en) | Movable hydraulic torque calibration device suitable for low-speed high-power hydraulic dynamometer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |