CN109142110A - Contact fatigue test hydraulic loading system - Google Patents
Contact fatigue test hydraulic loading system Download PDFInfo
- Publication number
- CN109142110A CN109142110A CN201810871316.6A CN201810871316A CN109142110A CN 109142110 A CN109142110 A CN 109142110A CN 201810871316 A CN201810871316 A CN 201810871316A CN 109142110 A CN109142110 A CN 109142110A
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- Prior art keywords
- loading
- loading head
- oil inlet
- hydraulic
- oil
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Classifications
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- 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
-
- 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
- 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
- G01N2203/0014—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
-
- 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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- 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 relates to a kind of contact fatigue test hydraulic loading systems, including loading chambers, guide rod, connecting rod, load bar, the first loading head, the second loading head, fuel tank, hydraulic pump, hydraulic cylinder.Contact fatigue test hydraulic loading system provided by the invention, it is adjustable by the space between the first loading head and the second loading head of setting, the part that different-thickness is placed between the first loading head and the second loading head may be implemented, the first loading head and the second loading head are loaded by hydraulic cylinder again, fatigue test can be carried out to the part of different-thickness, without redesigning multiple sets of fixtures, cost is saved, conventional efficient is also substantially increased.
Description
Technical field
The invention belongs to the technical fields such as the fatigue test of machine components, and in particular to a kind of contact fatigue test is hydraulic
Loading system.
Background technique
Fatigue refers to the damage accumulation of material or structure under alternating load ringing until the phenomenon that destroying.Fatigue
Behavior load cycle cycle according to needed for occurring fatigue rupture, is divided into low-cycle fatigue, high cycle fatigue and super high cycle fatigue.
Laboratory carry out contact wear fatigue experiment used by sample be usually round metal bars or plate tensile sample,
It is identical as tensile fatigue sample common in national standard.When carrying out contact wear fatigue experiment, with common fatigue experiment phase
Seemingly, axially apply along sample and draw or press cyclic fatigue load, and apply along axially vertical direction in the middle position of sample
The normal direction contact wear load of vertical specimen surface.
Currently, the part for different-thickness needs specially to design different fixtures when carrying out fatigue test, thus
So that the higher cost of fatigue test, and need to spend more times, affect conventional efficient.
Therefore, how a kind of contact fatigue experimental provision is provided, this can be become to different-thickness part fatigue test
Field technical staff technical problem urgently to be resolved.
Summary of the invention
The present invention is directed at least solve the technical problems existing in the prior art, a kind of contact fatigue test liquid is proposed
Loading system is pressed, the above-mentioned problems of the prior art can be improved.
A kind of contact fatigue test hydraulic loading system is provided to achieve the purpose of the present invention, including loading chambers, is led
Bar, connecting rod, load bar, the first loading head, the second loading head, fuel tank, hydraulic pump, hydraulic cylinder；
The fuel tank is equipped with oil inlet pipe and oil return line, and the hydraulic pump is provided on the oil inlet pipe, institute
The oil inlet for stating hydraulic pump is connected to the fuel tank by filter, and the oil outlet of the hydraulic pump passes sequentially through check valve and
One switch valve is connected to the oil inlet of the hydraulic cylinder, and the oil outlet of the hydraulic cylinder is connected to the oil return line, and described first opens
It closes the oil inlet pipe between valve and the hydraulic cylinder and is equipped with solenoid valve, the oil inlet of the solenoid valve is connected to the oil inlet pipe
The oil outlet on road, the solenoid valve is connected to fuel tank；
The loading chambers have hollow cavity, and vertical direction, which is arranged side by side, in the cavity two guide rods, institute
State the first loading head, second loading head is placed on the guide rod, and first loading head, second loading head
It can be slided up and down along the guide rod, the space between first loading head and second loading head is tested for placing
Part, the bottom of the loading chambers, which is equipped with, adjusts bolt, and the adjusting bolt protrudes into the loading chambers, the adjusting
Bolt is for adjusting second loading head in the position of vertical direction；The upper end of first loading head is equipped with load bar, institute
The upper end for stating load bar is connected with the connecting rod, and the connecting rod is used for the hydraulic stem of connection liquid cylinder pressure, by described hydraulic
Bar applies load to first loading head.
It preferably, further include relief valve, the oil inlet of the relief valve is connected to the check valve and the first switch valve
Between oil inlet pipe, the oil outlet of the relief valve is connected to fuel tank.
Preferably, the oil circuit between the oil inlet of the solenoid valve and the oil inlet pipe is equipped with pressure gauge.
Preferably, the oil circuit between the oil inlet of the solenoid valve and the oil inlet pipe is equipped with second switch valve.
Preferably, the load bar is connect with the connecting rod by nut.
Preferably, the load bar is connect by welding with the upper end of first loading head.
The invention has the following advantages:
Contact fatigue test hydraulic loading system provided by the invention is loaded by the first loading head of setting and second
Space between head is adjustable, and the part that different-thickness is placed between the first loading head and the second loading head may be implemented,
The first loading head and the second loading head are loaded by hydraulic cylinder again, tired examination can be carried out to the part of different-thickness
It tests, without redesigning multiple sets of fixtures, saves cost, also substantially increase conventional efficient.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of contact fatigue test hydraulic loading system provided in an embodiment of the present invention；
The working principle of hydraulic cylinder in the contact fatigue test hydraulic loading system that Fig. 2 provides for embodiment of the present invention
Schematic diagram；
Description of symbols:
Loading chambers 1, connecting rod 3, load bar 4, the first loading head 5-1, the second loading head 5-2, adjust bolt at guide rod 2
6, nut 7, hydraulic pump 8, hydraulic cylinder 9, filter 10, check valve 11, first switch valve 12, solenoid valve 13, second switch valve
14, pressure gauge 15.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to
The embodiment of attached drawing description is exemplary, and for explaining only the invention, and is not construed as limiting the claims.
It please refers to shown in Fig. 1, Fig. 2, Fig. 1 is contact fatigue test hydraulic loading system provided in an embodiment of the present invention
Structural schematic diagram；The work of hydraulic cylinder is former in the contact fatigue test hydraulic loading system that Fig. 2 provides for embodiment of the present invention
Manage schematic diagram.
As shown in Figure 1 and Figure 2, contact fatigue test hydraulic loading system provided by the invention, including loading chambers 1, lead
Bar 2, load bar 4, the first loading head 5-1, the second loading head 5-2, adjusts bolt 6, is fuel tank, hydraulic pump 8, hydraulic connecting rod 3
Cylinder 9.
The fuel tank is equipped with oil inlet pipe and oil return line, and the hydraulic pump 8 is provided on the oil inlet pipe,
The oil inlet of the hydraulic pump 8 is connected to the fuel tank by filter 10, and the oil outlet of the hydraulic pump 8 passes sequentially through unidirectionally
Valve 11 is connected to the oil inlet of the hydraulic cylinder 9 with first switch valve 12, sets in the oil outlet pipe of 8 oil outlet of hydraulic pump
There is check valve 11, the oil outlet of the hydraulic pump 8 is connected to the oil inlet of the check valve 11, and check valve 11 can prevent fuel-displaced
There is backflow phenomenon in hydraulic oil in pipeline；The oil outlet of the hydraulic cylinder 9 is connected to the oil return line, the first switch
Oil inlet pipe between valve 12 and the hydraulic cylinder 9 is equipped with solenoid valve 13, the oil inlet connection of the solenoid valve 13 it is described into
The oil outlet of oil pipe line, the solenoid valve 13 is connected to fuel tank.
The loading chambers 1 have hollow cavity, and vertical direction, which is arranged side by side, in the cavity two guide rods 2,
The first loading head 5-1, the second loading head 5-2 are placed on the guide rod 2, and the first loading head 5-1, institute
Stating the second loading head 5-2 can slide up and down along the guide rod 2, the first loading head 5-1 and the second loading head 5-2
Between space for placing tested part, the bottom of the loading chambers 1, which is equipped with, adjusts bolt 6, and the adjusting bolt 6 is stretched
Enter in the loading chambers 1, the adjusting bolt 6 is for adjusting the second loading head 5-2 in the position of vertical direction；Institute
The upper end for stating the first loading head 5-1 is equipped with load bar 4, and the upper end of the load bar 4 is connected with the connecting rod 3, the connection
Bar 3 is used for the hydraulic stem of connection liquid cylinder pressure, applies load to the first loading head 5-1 by the hydraulic stem.
By adjusting screw-in and the back-out of bolt 6, adjustable second loading head 5-2 is in the position of vertical direction, in turn
The space between the first loading head 5-1 and the second loading head 5-2 is adjusted, to place the part of different-thickness size.
Provided by the present invention for the test device of different-thickness part fatigue test, the first loading head 5-1 of setting with
Space between second loading head 5-2 is adjustable, can place not between the first loading head 5-1 and the second loading head 5-2
The part of stack pile can carry out fatigue test to the part of different-thickness, without redesigning multiple sets of fixtures, save
Cost also substantially increases conventional efficient.
When needing to apply load to tested part, the hydraulic oil with certain pressure is passed through check valve by hydraulic pump 8
11, first switch valve 12 be sent into hydraulic cylinder 9 in, push hydraulic cylinder 9 piston move down, hydraulic cylinder 9 by connecting rod 3 to
First loading head 5-1 applies active force, is loaded by the first loading head 5-1 to tested part.Solenoid valve 13 passes through threeway
Piping connection when oil inlet pipe, 8 pumps hydraulic oil of hydraulic pump, close by solenoid valve 13, and the pressure in hydraulic cylinder 9 increases, when reaching
To after the oil pressure of requirement, solenoid valve 13 is opened, and under the gravity of hydraulic cylinder 9, hydraulic cylinder 9 starts oil extraction, in hydraulic cylinder 9
Pressure decline, when reaching requirement, solenoid valve 13 is closed, and the piston of oil cylinder moves reciprocatingly at this time, may be implemented to tested
The dynamically load of part.
It further include relief valve in preferred scheme, the oil inlet of the relief valve is connected to the check valve 11 and described the
The oil outlet of oil inlet pipe between one switch valve 12, the relief valve is connected to fuel tank.When the oil pressure in oil inlet pipe is higher than in advance
If when value, relief valve is opened, the oil pressure in oil inlet pipe can be reduced, is played a protective role to system.
In preferred scheme, the oil circuit between the oil inlet and the oil inlet pipe of the solenoid valve 13 is equipped with pressure
Table 15.The oil pressure on oil inlet pipe is detected by pressure gauge 15, is opened or closed to control solenoid valve 13.
In preferred scheme, the oil circuit between the oil inlet and the oil inlet pipe of the solenoid valve 13 is equipped with second
Switch valve 14.Second switch valve 14 can play the role of protecting solenoid valve 13, when oil inlet pipe pressure is excessive, close the
Two switch valves 14 avoid excessive pressure from destroying solenoid valve 13.
In preferred scheme, the load bar 4 is connect with the connecting rod 3 by nut 7.Load bar 4 and connecting rod 3
Between formed and be detachably connected, can be convenient and replace hydraulic cylinder or load bar 4 during the experiment.
In preferred scheme, the load bar 4 is connect by welding with the upper end of the first loading head 5-1.It is described to add
It carries and is formed a fixed connection between bar 4 and the first loading head 5-1 by welding, be transferred directly to the first loading head 5-1 convenient for load
On, improve the accuracy of experiment.
Structure, feature and effect of the invention, the above institute are described in detail based on the embodiments shown in the drawings
Only presently preferred embodiments of the present invention is stated, but the present invention does not limit the scope of implementation as shown in the drawings, it is all according to structure of the invention
Think made change or equivalent example modified to equivalent change, does not go beyond the spirit of the description and the drawings
When, it should all be within the scope of the present invention.
Claims (6)
1. a kind of contact fatigue test hydraulic loading system, which is characterized in that including loading chambers, guide rod, connecting rod, load
Bar, the first loading head, the second loading head, fuel tank, hydraulic pump, hydraulic cylinder；
The fuel tank is equipped with oil inlet pipe and oil return line, and the hydraulic pump is provided on the oil inlet pipe, the liquid
The oil inlet of press pump is connected to the fuel tank by filter, and the oil outlet of the hydraulic pump passes sequentially through check valve and first switch
Valve is connected to the oil inlet of the hydraulic cylinder, and the oil outlet of the hydraulic cylinder is connected to the oil return line, the first switch valve with
Oil inlet pipe between the hydraulic cylinder is equipped with solenoid valve, and the oil inlet of the solenoid valve is connected to the oil inlet pipe, described
The oil outlet of solenoid valve is connected to fuel tank；
The loading chambers have hollow cavity, and vertical direction, which is arranged side by side, in the cavity two guide rods, and described the
One loading head, second loading head are placed on the guide rod, and first loading head, second loading head can edges
The guide rod slides up and down, and the space between first loading head and second loading head is for placing tested part, institute
The bottom for stating loading chambers, which is equipped with, adjusts bolt, and the adjusting bolt protrudes into the loading chambers, and the adjusting bolt is used for
Second loading head is adjusted in the position of vertical direction；The upper end of first loading head is equipped with load bar, the load bar
Upper end be connected with the connecting rod, the connecting rod is used for the hydraulic stem of connection liquid cylinder pressure, by the hydraulic stem to described
First loading head applies load.
2. contact fatigue test hydraulic loading system according to claim 1, which is characterized in that it further include relief valve, institute
The oil inlet for stating relief valve is connected to oil inlet pipe between the check valve and the first switch valve, the relief valve it is fuel-displaced
Mouth connection fuel tank.
3. contact fatigue test hydraulic loading system according to claim 2, which is characterized in that the oil inlet of the solenoid valve
Oil circuit between mouth and the oil inlet pipe is equipped with pressure gauge.
4. contact fatigue test hydraulic loading system according to claim 2, which is characterized in that the oil inlet of the solenoid valve
Oil circuit between mouth and the oil inlet pipe is equipped with second switch valve.
5. contact fatigue test hydraulic loading system according to claim 1, which is characterized in that the load bar with it is described
Connecting rod is connected by nut.
6. contact fatigue test hydraulic loading system according to claim 1, which is characterized in that the load bar passes through weldering
It connects and is connect with the upper end of first loading head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810871316.6A CN109142110A (en) | 2018-08-02 | 2018-08-02 | Contact fatigue test hydraulic loading system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810871316.6A CN109142110A (en) | 2018-08-02 | 2018-08-02 | Contact fatigue test hydraulic loading system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109142110A true CN109142110A (en) | 2019-01-04 |
Family
ID=64799541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810871316.6A Pending CN109142110A (en) | 2018-08-02 | 2018-08-02 | Contact fatigue test hydraulic loading system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109142110A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109696368A (en) * | 2019-01-30 | 2019-04-30 | 济南鑫光试验机制造有限公司 | A kind of three axis fatigue tester of pitch |
| CN109780060A (en) * | 2019-03-27 | 2019-05-21 | 河北工业大学 | A kind of sliding bearing bearing radial and axial power and changeable axial oil pressure |
| CN110702544A (en) * | 2019-10-15 | 2020-01-17 | 常州达姆斯检测技术有限公司 | Fatigue detection device with reinforcing rib parts on surface |
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| CN204099303U (en) * | 2014-09-05 | 2015-01-14 | 天津市科力起重设备有限公司 | A kind of hydraulic system for overhead traveling crane |
| CN205078520U (en) * | 2015-09-25 | 2016-03-09 | 宁波顺兴机械制造有限公司 | Hydraulic pressure oil circuit of hydraulically operated fixture |
| CN205136165U (en) * | 2015-11-05 | 2016-04-06 | 长城重型机械制造有限公司 | Hydraulic pressure loading system |
| CN106950107A (en) * | 2017-03-30 | 2017-07-14 | 南京航空航天大学 | A kind of three-point bending fatigue experimental device |
| CN108956307A (en) * | 2018-08-02 | 2018-12-07 | 河北工业大学 | Repeated bend test hydraulic test system |
| CN109030195A (en) * | 2018-08-02 | 2018-12-18 | 河北工业大学 | Test device for different-thickness part fatigue test |
-
2018
- 2018-08-02 CN CN201810871316.6A patent/CN109142110A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102815008A (en) * | 2011-06-08 | 2012-12-12 | 宋文祥 | Novel hydraulic mechanism of two hydraulic systems |
| CN204099303U (en) * | 2014-09-05 | 2015-01-14 | 天津市科力起重设备有限公司 | A kind of hydraulic system for overhead traveling crane |
| CN205078520U (en) * | 2015-09-25 | 2016-03-09 | 宁波顺兴机械制造有限公司 | Hydraulic pressure oil circuit of hydraulically operated fixture |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109696368A (en) * | 2019-01-30 | 2019-04-30 | 济南鑫光试验机制造有限公司 | A kind of three axis fatigue tester of pitch |
| CN109696368B (en) * | 2019-01-30 | 2020-10-30 | 济南鑫光试验机制造有限公司 | Asphalt triaxial fatigue testing machine |
| CN109780060A (en) * | 2019-03-27 | 2019-05-21 | 河北工业大学 | A kind of sliding bearing bearing radial and axial power and changeable axial oil pressure |
| CN109780060B (en) * | 2019-03-27 | 2024-05-28 | 河北工业大学 | Sliding bearing capable of bearing radial and axial forces and changing axial oil pressure |
| CN110702544A (en) * | 2019-10-15 | 2020-01-17 | 常州达姆斯检测技术有限公司 | Fatigue detection device with reinforcing rib parts on surface |
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Application publication date: 20190104 |
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