CN107505202A - A kind of material fatigue testing machine tool loading device - Google Patents
A kind of material fatigue testing machine tool loading device Download PDFInfo
- Publication number
- CN107505202A CN107505202A CN201710475300.9A CN201710475300A CN107505202A CN 107505202 A CN107505202 A CN 107505202A CN 201710475300 A CN201710475300 A CN 201710475300A CN 107505202 A CN107505202 A CN 107505202A
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- limit
- tonnage
- oil
- sliding block
- oil cylinder
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- 239000000463 material Substances 0.000 title claims abstract description 22
- 238000009661 fatigue test Methods 0.000 title claims abstract description 18
- 238000012360 testing method Methods 0.000 claims description 16
- 230000000694 effects Effects 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 4
- 239000013589 supplement Substances 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- G01N3/08—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
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/26—Investigating twisting or coiling properties
-
- 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
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- 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 invention discloses a kind of material fatigue testing machine tool loading device, is made up of hydraulic pressure slippage pump, toggle, sliding block, guide rail, limit for tonnage oil cylinder, active chuck, fixed chuck, oil sump, right overflow valve, right check valve, left overflow valve, left check valve, accumulator etc.；The present invention has simple in construction, low cost, and machine driving long lifespan, efficiency high, the drive motor power of outfit is also small, therefore operating cost is also low.
Description
Technical field
The present invention relates to engineering material test technical field, loads and fills more particularly, to a kind of material fatigue testing machine tool
Put.
Background technology
, it is necessary to which the materials such as steels and their products are stretched, compressed and reversed in engineering material test technical field
Deng fatigue test, it is necessary to the repeated loading for being applied " draw --- pressure " or " just --- anti-" direction by test material and reversing etc.,
And this repeated loading of application will continue for some time and reach very high cycle-index.In current material fatigue rig
In, the reciprocating motion of the hydraulic jack of generally use electro-hydraulic servo control applies load, to ensure the constant of load.It is this electro-hydraulic
Not only operating cost is very high for servo-controlled hydraulic jack system, and the frequency for testing loading is relatively low.
The content of the invention
The technical problem to be solved in the present invention is：A kind of material fatigue testing machine tool loading device is provided, uses crank connecting link
Mechanism loading lotus delimiter is used as loading device, to replace the hydraulic jack loading device of existing electro-hydraulic servo control, so as to
Solve the problems, such as that current material fatigue rig operating cost is high, experiment loading frequency is low.
Solve above-mentioned technical problem technical scheme be：
A kind of material fatigue testing machine tool loading device, by hydraulic pressure slippage pump, toggle, sliding block, guide rail, limit for tonnage
Oil cylinder, active chuck, fixed chuck, oil sump, right overflow valve, right check valve, left overflow valve, left check valve, accumulator etc. form；
Wherein, toggle is flexibly connected with sliding block, is done reciprocating linear motion in the driving lower band movable slider of motor；Guide rail is consolidated
It is scheduled on support, is flexibly connected with sliding block and limits the movement locus of sliding block, sliding block is fixedly connected with the cylinder body of limit for tonnage oil cylinder, made
Limit for tonnage oil cylinder does reciprocating linear motion with sliding block；Limit for tonnage oil cylinder for left and right two chamber homalographics two-chamber oil cylinder, limit for tonnage right cavity of cylinder
Interior piston rod is fixedly connected with active chuck；Fixed chuck is fixed on support, and test specimen is clamped jointly with active chuck；
Left and right two chamber of limit for tonnage oil cylinder connects with left and right overflow valve, left and right check valve oil circuit respectively, the oil-out of left and right overflow valve
It is connected respectively with oil sump oil circuit, the other end of left and right check valve is in parallel, and is connected with hydraulic pressure slippage pump, accumulator oil circuit.
Preferably, described hydraulic pressure slippage pump is low pressure fuel pump, comes with overflow valve and pressure switch, works as hydraulic system
Pressure switch acts and cuts off oil pump motor power supply when pressure reaches setting value, and oil pump is stopped, when hydraulic system
Overflow valve events unload and ensure the safety of hydraulic system when pressure exceedes highest set value.
A kind of loading device of material torsional fatigue test, it is mainly by above-mentioned material fatigue test machinery loading device
Active chuck make rotatable active chuck into, the connection of the piston rod and active chuck of limit for tonnage right cavity of cylinder be changed to wheel rim or
The flexible connection of rotating shaft.
The beneficial effects of the invention are as follows：
1st, low cost, long lifespan, efficiency high, operating cost are low：Due to the present invention use mainly with toggle with
The loading device of limit for tonnage oil cylinder composition, there is simple in construction, low cost, machine driving long lifespan, efficiency high, the driving electricity of outfit
Motivation power is also small, therefore operating cost is also low.The present invention is practical, by the support and the stress knot that change active chuck
Structure, the torsional fatigue test that can also complete test specimen work, the function of expanding test equipment, and the cost of investment of user is also low.
2nd, it is accurately constant to load numerical value；The loading dress combined due to the present invention using toggle with limit for tonnage oil cylinder
Put, maintain the accurate constant excellent properties of hydraulic jack loading device loading numerical value of existing electro-hydraulic servo control.
3rd, loading frequency can be improved：The present invention uses the loading mainly formed with toggle and limit for tonnage oil cylinder to fill
To put compared with the hydraulic jack loading device of existing electro-hydraulic servo control, controlling unit is simple, and limit for tonnage cylinder action stroke is very short,
It can adapt to higher loading frequency.
Brief description of the drawings
Fig. 1 is material fatigue testing machine tool loading device structural representation of the present invention；
Fig. 2 is material fatigue testing machine tool loading device partial structural diagram of the present invention；
Fig. 3 is material fatigue testing machine tool loading device limit for tonnage oil cylinder profile of the present invention；
In figure：1st, hydraulic pressure slippage pump；2nd, toggle；3rd, sliding block；4th, guide rail；5th, limit for tonnage oil cylinder；501st, left chamber；
502nd, right chamber；503rd, piston rod；6th, active chuck；7th, fixed chuck；8th, oil sump；9th, right overflow valve；10th, right check valve；11st, it is left
Overflow valve；12nd, left check valve；13rd, accumulator；A, test block.
Embodiment
Below, the technical characteristic of the present invention is further described with reference to Figure of description and specific embodiment.
A kind of material fatigue testing machine tool loading device, as shown in figure 1, by hydraulic pressure slippage pump 1, toggle 2, sliding
Block 3, guide rail 4, limit for tonnage oil cylinder 5, active chuck 6, fixed chuck 7, oil sump 8, right overflow valve 9, right check valve 10, left overflow valve
11st, left check valve 12, accumulator 13 etc. form；Wherein, toggle 2 is flexibly connected with sliding block 3, in the driving of motor
Lower band movable slider 3 does reciprocating linear motion；Guide rail 4 is fixed on support, is flexibly connected with sliding block 3 and is limited the motion of sliding block 3
Track, sliding block 3 are fixedly connected with the cylinder body of limit for tonnage oil cylinder 5, limit for tonnage oil cylinder 5 is done reciprocating linear motion with sliding block 3；Limit for tonnage oil cylinder
5 for two chamber homalographics of left and right two-chamber oil cylinder, the piston rod 503 in limit for tonnage right cavity of cylinder 502 is fixedly connected with active chuck 6；
Fixed chuck 7 is fixed on support, and test specimen a is clamped jointly with active chuck 6；Left and right two chamber of limit for tonnage oil cylinder 5 respectively with
Left and right overflow valve 11,9, left and right check valve 12, the connection of 10 oil circuits, the oil-out of left and right overflow valve 11,9 are oily with oil sump 8 respectively
Road connects, and the other end of left and right check valve 12,10 is in parallel, and is connected with hydraulic pressure slippage pump 1, the oil circuit of accumulator 13.
Test specimen a both ends are clamped on fixed chuck 7 and active chuck 6, start-up loading motor driving crank
The bent axle of linkage 2 rotates, and makees left and right linear reciprocating motion by connecting rod band movable slider 3, sliding block 3 drives limit for tonnage oil
The cylinder body of cylinder 5, which follows, to do reciprocating linear motion.When the cylinder body of limit for tonnage oil cylinder 5 moves right, fluid in oil cylinder left chamber 501 by
Pressure, the left check valve 12 being connected with oil cylinder left chamber 501 remain turned-off, and the left cavity pressure rise of oil cylinder, promote the work of limit for tonnage oil cylinder 5
Plug and piston rod 503 move right, and drive active chuck 6 to apply pressure to test block a；When limit for tonnage oil cylinder 5 cylinder body to the left
During motion, the fluid in right cavity of cylinder 502 is pressurized, and the right check valve 10 being connected with right cavity of cylinder 502 remains turned-off, right cavity of cylinder
Pressure rise in 502, the piston and piston rod 503 of promotion limit for tonnage oil cylinder 5 drive active chuck 6 to be applied to test specimen 7 to left movement
Add pulling force.In loading procedure, exceed setting value if there is pressure or the load drawn, the left chamber or right chamber of limit for tonnage oil cylinder 5 will be made
Pressure exceedes setting value, and left and right overflow valve 11,9 will unload, so that guarantee test load is constant.By adjusting left and right overflow
The pressure set points of valve 11,9, thus it is possible to vary the size of test load.Check valve 10,12, the effect of accumulator 13 are to being unloaded
Limit for tonnage oil cylinder 5 after carrying or leaking supplements fluid.The effect of hydraulic pressure slippage pump 1 is to supplement fluid to accumulator 13, ensures hydraulic pressure
The pressure of system is in the range of normal setting.
Claims (3)
- A kind of 1. material fatigue testing machine tool loading device, it is characterised in that by hydraulic pressure slippage pump, toggle, sliding block, Guide rail, limit for tonnage oil cylinder, active chuck, test specimen, fixed chuck, oil sump, right overflow valve, right check valve, left overflow valve, a left side are unidirectional Valve, accumulator etc. form；Wherein, toggle is flexibly connected with sliding block, is made in the driving lower band movable slider of motor straight Line moves back and forth；Guide rail is fixed on support, is flexibly connected with sliding block and is limited the movement locus of sliding block, sliding block and limit for tonnage oil cylinder Cylinder body be fixedly connected, limit for tonnage oil cylinder is done reciprocating linear motion with sliding block；Limit for tonnage oil cylinder is the two-chamber of two chamber homalographics of left and right Oil cylinder, the piston rod in limit for tonnage right cavity of cylinder are fixedly connected with active chuck；Fixed chuck is fixed on support, with active chuck Common clamping test specimen；Left and right two chamber of limit for tonnage oil cylinder connects with left and right overflow valve, left and right check valve oil circuit respectively, left, The oil-out of right overflow valve is connected with oil sump oil circuit respectively, and the other end of left and right check valve is in parallel, and with hydraulic pressure slippage pump, storage Can the connection of device oil circuit.
- 2. material fatigue testing machine tool loading device according to claim 1, it is characterised in that described hydraulic pressure slippage pump For low pressure fuel pump, overflow valve and pressure switch are come with, pressure switch acts when hydraulic system pressure reaches setting value And oil pump motor power supply is cut off, oil pump is stopped, the overflow valve events when the pressure of hydraulic system exceedes highest set value Unload and ensure the safety of hydraulic system.
- 3. a kind of loading device of material torsional fatigue test, it is characterised in that it is mainly by the material described in claim 1 or 2 Active chuck in fatigue test machinery loading device makes rotatable active chuck, piston rod and the activity of limit for tonnage right cavity of cylinder into The connection of chuck is changed to be flexibly connected with wheel rim or rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710475300.9A CN107505202A (en) | 2017-06-21 | 2017-06-21 | A kind of material fatigue testing machine tool loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710475300.9A CN107505202A (en) | 2017-06-21 | 2017-06-21 | A kind of material fatigue testing machine tool loading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107505202A true CN107505202A (en) | 2017-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710475300.9A Pending CN107505202A (en) | 2017-06-21 | 2017-06-21 | A kind of material fatigue testing machine tool loading device |
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| Country | Link |
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| CN (1) | CN107505202A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680346A (en) * | 2018-05-14 | 2018-10-19 | 北京工业大学 | A kind of continuity reciprocator fatigue test rig |
| CN109883898A (en) * | 2019-03-21 | 2019-06-14 | 中国矿业大学(北京) | Kinetic characteristic and kinetic characteristics experimental rig and pilot system |
| CN113686567A (en) * | 2021-10-26 | 2021-11-23 | 三一重型装备有限公司 | Static loading test system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0988906A (en) * | 1995-09-25 | 1997-03-31 | Daiichi Denki Kk | Fluid hydraulic drive device with fly wheel |
| CN102393340A (en) * | 2011-09-01 | 2012-03-28 | 浙江大学 | Hydraulic fatigue test system of connecting rod |
| CN206129743U (en) * | 2016-09-29 | 2017-04-26 | 曾婷 | A plurality of gas cylinder fatigue test hydraulic means |
| CN106593970A (en) * | 2016-12-09 | 2017-04-26 | 柳州职业技术学院 | Fatigue test hydraulic loading device for rigid material |
| CN106769485A (en) * | 2016-12-09 | 2017-05-31 | 柳州职业技术学院 | A kind of flexible material fatigue test hydraulic loading device |
| CN207147891U (en) * | 2017-06-21 | 2018-03-27 | 柳州职业技术学院 | A kind of material fatigue testing machine tool loading device |
-
2017
- 2017-06-21 CN CN201710475300.9A patent/CN107505202A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0988906A (en) * | 1995-09-25 | 1997-03-31 | Daiichi Denki Kk | Fluid hydraulic drive device with fly wheel |
| CN102393340A (en) * | 2011-09-01 | 2012-03-28 | 浙江大学 | Hydraulic fatigue test system of connecting rod |
| CN206129743U (en) * | 2016-09-29 | 2017-04-26 | 曾婷 | A plurality of gas cylinder fatigue test hydraulic means |
| CN106593970A (en) * | 2016-12-09 | 2017-04-26 | 柳州职业技术学院 | Fatigue test hydraulic loading device for rigid material |
| CN106769485A (en) * | 2016-12-09 | 2017-05-31 | 柳州职业技术学院 | A kind of flexible material fatigue test hydraulic loading device |
| CN207147891U (en) * | 2017-06-21 | 2018-03-27 | 柳州职业技术学院 | A kind of material fatigue testing machine tool loading device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680346A (en) * | 2018-05-14 | 2018-10-19 | 北京工业大学 | A kind of continuity reciprocator fatigue test rig |
| CN108680346B (en) * | 2018-05-14 | 2020-02-07 | 北京工业大学 | Fatigue test bench for continuous reciprocating motion device |
| CN109883898A (en) * | 2019-03-21 | 2019-06-14 | 中国矿业大学(北京) | Kinetic characteristic and kinetic characteristics experimental rig and pilot system |
| CN113686567A (en) * | 2021-10-26 | 2021-11-23 | 三一重型装备有限公司 | Static loading test system |
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