CN106593970A - Fatigue test hydraulic loading device for rigid material - Google Patents
Fatigue test hydraulic loading device for rigid material Download PDFInfo
- Publication number
- CN106593970A CN106593970A CN201611129815.5A CN201611129815A CN106593970A CN 106593970 A CN106593970 A CN 106593970A CN 201611129815 A CN201611129815 A CN 201611129815A CN 106593970 A CN106593970 A CN 106593970A
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- CN
- China
- Prior art keywords
- valve
- displacement pump
- oil
- plunger displacement
- oil cylinder
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/024—Installations or systems with accumulators used as a supplementary power source, e.g. to store energy in idle periods to balance pump load
-
- 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
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/36—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by pneumatic or hydraulic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20576—Systems with pumps with multiple pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
-
- 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
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
-
- 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
-
- 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
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical 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 invention relates to a fatigue test hydraulic loading device for a rigid material. The fatigue test hydraulic loading device for the rigid material comprises a clamping pump station, a loading pump station, a manual reversing valve, an oil cylinder, a test piece clamp and an oil storage tank, wherein a clamp I is fixedly arranged on a machine seat; a clamp II is connected with a piston rod on the oil cylinder; the clamping pump station is connected with an oil path of the oil cylinder through the manual reversing valve; an eccentric wheel and a cam are both fixedly arranged on the same shaft connected with a motor; a plunger pump I and a plunger pump II are in driving connection with the eccentric wheel; the reversing valve is in driving connection with the cam; the plunger pump I and the plunger pump II are connected with the oil path of the oil cylinder through a check valve and the reversing valve; and the plunger pump I and the plunger pump II are connected with an oil path of the oil storage tank through check valves. The cam coaxial with the loaded plunger pumps is used for controlling the reversing valve to carry out switching of the oil paths of the hydraulic system, pulling force and pressure can be applied to the tested material circularly, and therefore work reliability is quite high.
Description
Technical field
The present invention relates to a kind of engineering material test technical field, particularly a kind of rigid material fatigue test hydraulic loaded
Device.
Background technology
In engineering material test technical field, need the metal materials such as steel and its product are carried out stretching, reversed
Fatigue test, the repeated loading for needing to being applied by test material " draw --- pressure " or " just --- anti-" direction to reverse etc., and
And this repeated loading of applying will continue for some time and reach very high cycle-index, and this loading is realized with hydraulic system
Function is a kind of more satisfactory technical scheme.However, using the hydraulic circuit of existing hydraulic system and solenoid valve control come
Realize, not only system complex, electromagnetic valve in the work of long-time iterative cycles easy break-down and affect the reliability of system, power
Larger hydraulic power unit long-time is also very low in small-power pulsating cyclic work under load efficiency.
The content of the invention
The technical problem to be solved in the present invention is：A kind of rigidity that can conveniently circulate and apply pressure to rigid material is provided
Fatigue test of materials hydraulic loading device.
Solve above-mentioned technical problem technical scheme be：A kind of rigid material fatigue test hydraulic loading device, including dress
Folder pumping plant, loading pumping plant, hand-operated direction valve, oil cylinder, piece fixture and fuel reserve tank, described piece fixture include fixture I and folder
Tool II, described fixture I is fixedly installed on support, and described fixture II is connected with the piston rod on oil cylinder, described clamping
Manually reversal valve is connected pumping plant with oil path in oil cylinder, and described loading pumping plant includes plunger displacement pump I, plunger displacement pump II, eccentric, convex
Wheel and reversal valve, described eccentric and cam are respectively fixedly installed on the same axle being connected with motor, described post
Plug pump I and plunger displacement pump II are driven with eccentric respectively and are connected and are located at eccentric both sides, described reversal valve and cam respectively
Connection, described plunger displacement pump I and plunger displacement pump II is driven to be connected with oil path in oil cylinder by check valve and reversal valve respectively, it is described
Plunger displacement pump I and plunger displacement pump II are connected with fuel reserve tank oil circuit by check valve respectively, described oil cylinder manually reversal valve with
Fuel reserve tank oil circuit connects.
The present invention further technical scheme be：The plunger displacement pump I and plunger displacement pump II are by overflow valve and fuel reserve tank oil
Road connects.
Described clamping pumping plant outlet is connected with hand-operated direction valve oil circuit by check valve.
Described reversal valve is by the connection of one-way throttle valve, counterbalance valve and fuel reserve tank oil circuit.
Also include accumulator, described reversal valve is connected with accumulator by one-way throttle valve.
Due to adopting above-mentioned technical proposal, a kind of rigid material fatigue test hydraulic loading device of the present invention, with
Lower beneficial effect：
1. solenoid directional control valve is replaced using the reversal valve of cam control, be greatly improved the reliability of work：
Fatigue test is carried out to metal material and its product test specimen, needs to apply positive and negative direction cyclic loading to by test material,
And this positive and negative direction cyclic loading of applying will continue for some time and reach very high cycle-index, be made with hydraulic system
For charger when, need reversal valve frequent switching, if using traditional solenoid directional control valve, electromagnetic operating mechanism therein
It is easy to appearance to damage because generating heat and wearing and tearing.The present invention is controlled to oil cylinder and can be circulated to tested by loading pumping plant
Test material and apply pulling force and pressure, and loading pumping plant includes plunger displacement pump I, plunger displacement pump II, eccentric, cam and reversal valve, adopts
The cam control reversal valve coaxial with the plunger displacement pump of loading carries out hydraulic system oil circuit switching, and functional reliability is very high.
2. imposed load values constant and easy to adjust, added impact load is low：
The present invention replaces mechanical mechanism as the loading equipemtn of fatigue test of materials with hydraulic system, is overflow by adjusting hydraulic system
The setting valve of stream valve can easily obtain corresponding loading load value, and can keep loading stablizing for load value, energy
Eliminate or mitigate the generation of added impact load.
3. low cost, efficiency high, operating cost are low：
As the present invention is provided with clamping pumping plant, loading pumping plant simultaneously, the larger clamping pumping plant of power is only in test specimen clamping and tune
Whole stage uses, can, low-cost pump class relatively low using operating pressures such as gear pump, vane pumps, and load pumping plant and can use
Discharge capacity is less, the plunger displacement pump of simple structure, therefore cost is relatively low, simultaneously because the discharge capacity of load pump is less, the motor of outfit
Power is also little, therefore mechanical efficiency is high, and operating cost is also low.
Below, a kind of rigid material fatigue test hydraulic loaded with reference to Figure of description and specific embodiment to the present invention
The technical characteristic of device is further described.
Description of the drawings
Fig. 1：A kind of structural representation of the rigid material fatigue test hydraulic loading device of the present invention.
In above-mentioned accompanying drawing, each label declaration is as follows：
1- hand-operated direction valves, 2- fuel reserve tanks, 3- clamping pumping plants, 4- loading pumping plants, 401- check valves III, 402- check valves I, 403-
Plunger displacement pump I, 404- eccentrics, 405- bearing blocks I, 406- shaft couplings, 407- plunger displacement pumps II, 408- check valves IV, 409- is unidirectional
Valve II, 410- overflow valves, 411- bearing blocks II, 412- pump shafts, 413- cams, 414- reversal valves, 5- counterbalance valves, 6- one-way throttles
Valve, 7- accumulators, 8- oil cylinders, 9- fixtures II, 10- test specimens, 11- fixtures I.
Specific embodiment
A kind of rigid material fatigue test hydraulic loading device, including clamping pumping plant 3, loading pumping plant 4, hand-operated direction valve 1,
Oil cylinder 8, piece fixture, accumulator 7 and fuel reserve tank 2（In Fig. 1, fuel reserve tank 2 is same fuel reserve tank 2, is intended merely to convenient sight
See and be just drawn on different parts）, described piece fixture includes fixture I 11 and fixture II 9, and described fixture I 11 is fixed and set
It is placed on support, described fixture II 9 is connected with the piston rod on oil cylinder 8, and the cylinder body of the oil cylinder 8 is also secured on support.
Described loading pumping plant 4 includes plunger displacement pump I 403, plunger displacement pump II 407, eccentric 404, cam 413 and reversal valve 414, described
Eccentric 404 and cam 413 are respectively fixedly installed on the same axle being connected with motor, described plunger displacement pump I 403 and post
Plug pump II 407 is driven with eccentric 404 respectively and be connected and respectively positioned at 404 both sides of eccentric, described reversal valve 414 with it is convex
Wheel 413 drives connection, described plunger displacement pump I 403 and plunger displacement pump II 407 to pass through check valve and reversal valve 414 and oil cylinder 8 respectively
Oil circuit connects, meanwhile, unnecessary oil spill goes out for convenience, is connected with reversal valve 414 in plunger displacement pump I 403 and plunger displacement pump II 407
One branch road is set on oil circuit again so that plunger displacement pump I 403 and plunger displacement pump II 407 are connected with 2 oil circuit of fuel reserve tank, i.e., described plunger
Pump I 403 and plunger displacement pump II 407 are connected with 2 oil circuit of fuel reserve tank by overflow valve 410.Oil suction for convenience, described plunger displacement pump
I 403 and plunger displacement pump II 407 be connected with 2 oil circuit of fuel reserve tank by oil sucting one-way valve 401,408 respectively.Described clamping pumping plant 3 leads to
Cross hand-operated direction valve 1 to be connected with 8 oil circuit of oil cylinder, described clamping pumping plant 3 can be gear pump or vane pump, by filter and storage
2 oil circuit of fuel tank connects, and described gear pump or vane pump are connected with 1 oil circuit of hand-operated direction valve by check valve.Described oil cylinder 8
Manually reversal valve 1 is connected with 2 oil circuit of fuel reserve tank.Described reversal valve 414 passes through one-way throttle valve 6, counterbalance valve 5 and oil storage
2 oil circuit of case connects.Described reversal valve 414 is connected with 7 oil circuit of accumulator by one-way throttle valve 6.Described one-way throttle valve 6
Effect be limit 8 piston of oil cylinder test specimen restoring force effect under translational speed, it is to avoid or mitigate impact load generation.Institute
The effect of the counterbalance valve 5 stated is the reversing impact for avoiding hydraulic jack 8, while ensureing that accumulator 7 has certain pressure oil storage.
The effect that overflow valve 410 is arranged in loading pumping plant 4 is to maintain stablizing for hydraulic system working pressure, by adjusting the overflow valve
410 setting value obtains the maximum that test specimen loads load, and ensures the concordance of peak load.
As one kind conversion of the present embodiment：Loading pumping plant 4 is duplex plunger pump, and cam 413 is also single cycle stroke, according to
It is actually needed, plunger displacement pump number can be set to N number of（N is 2-16）, 413 roundtrips number of cam can be set to N/2.
As one kind conversion of the present embodiment：If making oil cylinder 8 into oscillating oil cylinder 8, the torsion of test specimen can also be carried out
Fatigue test.
Operation principle：
During clamping adjustment, start clamping pumping plant 3, the piston rod position of the adjustment oil cylinder 8 of hand-operated direction valve 1 is manipulated to being adapted to
The position of test specimen clamping, completes after test specimen clamping and stops the work of clamping pumping plant 3 after carrying out pretension；Hand-operated direction valve 1 is put
In middle position, start-up loading pumping plant 4 starts load test, loads the fixation of eccentric 404 and cam 413 in pumping plant 4 and all installs
On same pump shaft 412, when motor drives pump shaft 412 to rotate by shaft coupling 406, during I 403 oil extraction of plunger displacement pump, cam
413 control reversal valves 414 are in upper work（Location status shown in Figure 1）, the hydraulic oil in plunger displacement pump I 403 is by unidirectional
Valve（That is check valve I 402）, reversal valve 414 enter oil cylinder 8 left chamber, drive oil cylinder 8 piston rod（Together with fixture II 9）To the right
Move and pulling force is applied to test specimen 10；Now, in oil suction, hydraulic oil is by fuel reserve tank 2 through check valve for plunger displacement pump II 407（It is i.e. single
To valve IV 408）Into in the pump housing of plunger displacement pump II 407.When II 407 oil extraction of plunger displacement pump, the control reversal valve 414 of cam 413 exists
The next work, the hydraulic oil in plunger displacement pump II 407 pass through check valve（That is check valve II 409）, reversal valve 414 enter oil cylinder 8
Right chamber, drives the piston rod of oil cylinder 8（Together with fixture II 9）It is moved to the left and pressure is applied to test specimen 10；Now, plunger displacement pump I 403
In oil suction, hydraulic oil is by fuel reserve tank 2 through check valve（That is check valve III 401）Into in the pump housing of plunger displacement pump I 403.Reversal valve
414 switch when middle position between upper and lower, the left and right chamber connection of oil cylinder 8, drive in the presence of test specimen elastic restoring force
The micro movement of piston reverses direction of oil cylinder 8, due to the area discrepancy in the left and right chamber of oil cylinder 8, arranges accumulator 7 and can supplement or inhale
The not enough or surplus of the left and right chamber hydraulic oil of 8 piston of oil cylinder is received, freely the stretching after unloading of test specimen 10 is made.
Claims (5)
1. a kind of rigid material fatigue test hydraulic loading device, it is characterised in that：Including clamping pumping plant（3）, loading pumping plant
（4）, hand-operated direction valve（1）, oil cylinder（8）, piece fixture and fuel reserve tank（2）, described piece fixture includes fixture I（11）And folder
Tool II（9）, described fixture I（11）It is fixedly installed on support, described fixture II（9）With oil cylinder（8）On piston rod connect
Connect, described clamping pumping plant（3）Manually reversal valve（1）With oil cylinder（8）Oil circuit connects, described loading pumping plant（4）Including
Plunger displacement pump I（403）, plunger displacement pump II（407）, eccentric（404）, cam（413）And reversal valve（414）, described eccentric
（404）And cam（413）Respectively it is fixedly installed on the same axle being connected with motor, described plunger displacement pump I（403）And post
Plug pump II（407）Respectively and eccentric（404）Drive connection and be located at eccentric respectively（404）Both sides, described reversal valve
（414）With cam（413）Drive connection, described plunger displacement pump I（403）With plunger displacement pump II（407）Respectively by check valve and
Reversal valve（414）With oil cylinder（8）Oil circuit connects, described plunger displacement pump I（403）With plunger displacement pump II（407）Pass through check valve respectively
And fuel reserve tank（2）Oil circuit connects, described oil cylinder（8）Manually reversal valve（1）With fuel reserve tank（2）Oil circuit connects.
2. a kind of rigid material fatigue test hydraulic loading device according to claim 1, it is characterised in that：The plunger
Pump I（403）With plunger displacement pump II（407）Pass through overflow valve（410）With fuel reserve tank（2）Oil circuit connects.
3. a kind of rigid material fatigue test hydraulic loading device according to claim 1, it is characterised in that：Described dress
Folder pumping plant（3）Outlet is by check valve and hand-operated direction valve（1）Oil circuit connects.
4. a kind of rigid material fatigue test hydraulic loading device according to claim 1, it is characterised in that：Described changes
To valve（414）By one-way throttle valve（6）, counterbalance valve（5）With fuel reserve tank（2）Oil circuit connects.
5. a kind of rigid material fatigue test hydraulic loading device according to claim 1, it is characterised in that：Also include storage
Can device（7）, described reversal valve（414）By one-way throttle valve（6）With accumulator（7）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611129815.5A CN106593970B (en) | 2016-12-09 | 2016-12-09 | A kind of rigid material fatigue test hydraulic loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611129815.5A CN106593970B (en) | 2016-12-09 | 2016-12-09 | A kind of rigid material fatigue test hydraulic loading device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106593970A true CN106593970A (en) | 2017-04-26 |
| CN106593970B CN106593970B (en) | 2018-05-11 |
Family
ID=58597871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611129815.5A Active CN106593970B (en) | 2016-12-09 | 2016-12-09 | A kind of rigid material fatigue test hydraulic loading device |
Country Status (1)
| Country | Link |
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| CN (1) | CN106593970B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107505202A (en) * | 2017-06-21 | 2017-12-22 | 柳州职业技术学院 | A kind of material fatigue testing machine tool loading device |
| CN108561349A (en) * | 2018-07-13 | 2018-09-21 | 北京航空航天大学 | With the controllable load-on module along inverse load energy management and control function |
| CN108956132A (en) * | 2018-08-02 | 2018-12-07 | 清华大学 | Gear Root bending fatigue strength pilot system |
| CN109029980A (en) * | 2018-08-02 | 2018-12-18 | 清华大学 | Tooth bending fatigue strength loading system |
| CN109405789A (en) * | 2018-10-16 | 2019-03-01 | 柳州职业技术学院 | A kind of long material steel billet camber detection device |
| CN112610545A (en) * | 2020-12-30 | 2021-04-06 | 潍柴动力股份有限公司 | Hydraulic pulse system |
| CN114689437A (en) * | 2022-04-19 | 2022-07-01 | 辽宁大学 | A kind of annular centripetal static-dynamic combined loading test device and using method thereof |
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| EP0766084A2 (en) * | 1995-04-12 | 1997-04-02 | Bridgestone Corporation | Exothermic fatigue measurement method of viscoelastic body and hydraulic servo system flexometer |
| CN201561902U (en) * | 2009-10-15 | 2010-08-25 | 徐州天地重型机械制造有限公司 | Hydraulic hose performance test experiment table |
| CN201583462U (en) * | 2010-01-19 | 2010-09-15 | 沈阳斯林达安科新技术有限公司 | Fatigue testing machine |
| CN102393340A (en) * | 2011-09-01 | 2012-03-28 | 浙江大学 | Hydraulic fatigue test system of connecting rod |
| CN206338263U (en) * | 2016-12-09 | 2017-07-18 | 柳州职业技术学院 | A kind of rigid material fatigue test hydraulic loading device |
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| JPS5756734A (en) * | 1980-09-22 | 1982-04-05 | Hitachi Ltd | Start controller for tester |
| EP0766084A2 (en) * | 1995-04-12 | 1997-04-02 | Bridgestone Corporation | Exothermic fatigue measurement method of viscoelastic body and hydraulic servo system flexometer |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107505202A (en) * | 2017-06-21 | 2017-12-22 | 柳州职业技术学院 | A kind of material fatigue testing machine tool loading device |
| CN108561349A (en) * | 2018-07-13 | 2018-09-21 | 北京航空航天大学 | With the controllable load-on module along inverse load energy management and control function |
| CN108561349B (en) * | 2018-07-13 | 2019-12-31 | 北京航空航天大学 | Controllable loading module with forward and reverse load energy management and control functions |
| CN108956132A (en) * | 2018-08-02 | 2018-12-07 | 清华大学 | Gear Root bending fatigue strength pilot system |
| CN109029980A (en) * | 2018-08-02 | 2018-12-18 | 清华大学 | Tooth bending fatigue strength loading system |
| CN109405789A (en) * | 2018-10-16 | 2019-03-01 | 柳州职业技术学院 | A kind of long material steel billet camber detection device |
| CN112610545A (en) * | 2020-12-30 | 2021-04-06 | 潍柴动力股份有限公司 | Hydraulic pulse system |
| CN112610545B (en) * | 2020-12-30 | 2023-01-24 | 潍柴动力股份有限公司 | Hydraulic pulse system |
| CN114689437A (en) * | 2022-04-19 | 2022-07-01 | 辽宁大学 | A kind of annular centripetal static-dynamic combined loading test device and using method thereof |
| CN114689437B (en) * | 2022-04-19 | 2025-01-10 | 辽宁大学 | A ring-shaped centripetal static and dynamic combined loading test device and its use method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106593970B (en) | 2018-05-11 |
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Application publication date: 20170426 Assignee: LIUZHOU RISUN AUTOMOBILE SHOCK ABSORPTION TECHNOLOGY Co.,Ltd. Assignor: LIUZHOU VOCATIONAL & TECHNICAL College Contract record no.: X2024980016741 Denomination of invention: A hydraulic loading device for fatigue testing of rigid materials Granted publication date: 20180511 License type: Common License Record date: 20240926 |
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