CN109142109A - Shaft radial load loading device - Google Patents
Shaft radial load loading device Download PDFInfo
- Publication number
- CN109142109A CN109142109A CN201810870139.XA CN201810870139A CN109142109A CN 109142109 A CN109142109 A CN 109142109A CN 201810870139 A CN201810870139 A CN 201810870139A CN 109142109 A CN109142109 A CN 109142109A
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- China
- Prior art keywords
- oil
- oil outlet
- loading
- filter
- shaft
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0023—Bending
-
- 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
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0067—Fracture or rupture
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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 shaft radial load loading devices, including pedestal, supporting block, grip block, loading blocks, loading bolt, guide rail, hydraulic cylinder；The supporting block is fixed on the pedestal, the upper surface of the supporting block is for placing tested shaft, side in the supporting block positioned at the tested shaft is provided with block, and the height of the block is lower than the diameter of the tested shaft, and the lower end of the grip block is rectangular in shape；The guide rail is vertical on the pedestal, the grip block and the loading blocks are successively placed on the guide rail, the top of the loading blocks is equipped with loading bolt, the loading bolt screws in the loading blocks, against the loading bolt, the hydraulic cylinder is used to apply active force to the loading bolt for the end of the hydraulic stem of the hydraulic cylinder.
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 shaft radial load load dress
It sets.
Background technique
Fatigue of materials test is using test button or to simulate parts under circumstances, is subjected to alternating load ringing
And its fatigue behaviour criterion is measured, and study fatigue strength and the fatigue longevity of its fracture process, evaluation material, components or complete machine
The test of life.There are many metal fatigue test type, are commonly divided into high cycle fatigue, low-cycle fatigue, heat fatigue, impact fatigue, corruption
Erosion fatigue, contact fatigue, vacuum fatigue, fatigue at high temperature, room temperature fatigue, fatigue at low temperatures, rotary bending fatigue, plain bending are tired
Labor, axially loaded fatigue, torsional fatigue, combined stress fatigue etc..It is suitable to be selected according to the operating condition of metallic article
Fatigue test method.
Currently, can test, the device that flexural fatigue is tested is less, especially the device of the flexural fatigue test of shaft, in shaft
Flexural fatigue test in, need to shaft carry out radial loaded load.
Therefore, how radial loaded load is carried out to shaft, to carry out repeated bend test to shaft, becomes this field skill
Art personnel 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 shaft radial load load is proposed
Device can improve the above-mentioned problems of the prior art.
There is provided a kind of shaft radial load loading device to achieve the purpose of the present invention includes pedestal, supporting block, clamping
Block, loading blocks, loading bolt, guide rail, hydraulic cylinder；The supporting block is fixed on the pedestal, the upper surface of the supporting block
For placing tested shaft, the side that the tested shaft is located in the supporting block is provided with block, the height of the block
Lower than the diameter of the tested shaft, the lower end of the grip block is rectangular in shape, and a line of the square is against described
The other side of tested shaft, the Article 2 side of the square compress the top of the tested shaft, and the of the square
The length of a line is less than the diameter of the tested shaft；The guide rail is vertical on the pedestal, the grip block and institute
It states loading blocks to be successively placed on the guide rail, and the grip block and the loading blocks can be slided up and down along the guide rail, it is described
The top of loading blocks is equipped with loading bolt, and the loading bolt screws in the loading blocks, the end of the hydraulic stem of the hydraulic cylinder
Against the loading bolt, the hydraulic cylinder is used to apply active force to the loading bolt in portion.
It preferably, further include fuel tank, hydraulic pump, first filter, the second filter, overflow valve, pressure reducing valve, electro-hydraulic servo
Valve, the fuel tank have been respectively communicated with oil outlet pipe and oil return line, and the hydraulic pump is set to by motor drive, the hydraulic pump
In the oil outlet pipe, the oil inlet of the hydraulic pump is connected to the fuel tank, and the oil outlet connection of the hydraulic pump is described electro-hydraulic
The oil inlet of servo valve, the oil outlet of the electrohydraulic servo valve distinguishes the rod chamber and rodless cavity of the hydraulic cylinder, described hydraulic
The oil outlet of cylinder is connected to the oil return opening of the electrohydraulic servo valve, and the oil outlet of the electrohydraulic servo valve is connected to the oil return line；
The first filter, the second filter, the pressure reducing valve are successively set on the hydraulic pump and are connected to the electrohydraulic servo valve
In oil outlet pipe, the oil outlet pipe between the first filter, the second filter is equipped with the overflow valve, the overflow valve
Oil inlet be connected to oil outlet pipe, the oil outlet of the overflow valve is connected to oil return line.
Preferably, the oil outlet pipe of the hydraulic pump oil outlet is equipped with check valve, and the oil outlet of the hydraulic pump connects
Lead to the oil inlet of the check valve.
Preferably, the oil return line is equipped with water cooler, and the water cooler is used for hydraulic in oil return line
Oil is cooled down.
Preferably, the oil return line is equipped with third oil filter, and the oil outlet of the third oil filter is connected to fuel tank.
Preferably, force snesor is equipped in the loading blocks.
Preferably, the pedestal is equipped with groove, and the supporting block is bolted in the groove.
The invention has the following advantages:
Special supporting block and grip block is arranged for fixed tested in shaft radial load loading device provided by the invention
Shaft is applied the active force of vertical direction to loading blocks, grip block by hydraulic cylinder, realized to the carry out load of tested shaft
Load, so as to realize the repeated bend test of tested shaft.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of shaft radial load loading device provided in an embodiment of the present invention；
The working principle signal of hydraulic cylinder in the shaft radial load loading device that Fig. 2 provides for embodiment of the present invention
Figure；
Description of symbols:
Hydraulic pump 1, first filter 2, the second filter 3, overflow valve 4, pressure reducing valve 5, electrohydraulic servo valve 6, hydraulic cylinder 7,
Displacement sensor 8, cut-off valve group 9, accumulator 10, water cooler 11, third filter 12, pressure gauge 13；
Pedestal 14, tested shaft 15, supporting block 16, grip block 17, loading blocks 18, loading bolt 19, guide rail 20.
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 attached
The embodiment of figure 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 that the structure of shaft radial load loading device provided in an embodiment of the present invention is shown
It is intended to；The operation principle schematic diagram of hydraulic cylinder in the shaft radial load loading device that Fig. 2 provides for embodiment of the present invention.
As shown in Figure 1 and Figure 2, shaft radial load loading device provided by the invention, including pedestal 14, supporting block 16, folder
Hold block 17, loading blocks 18, loading bolt 19, guide rail 20, hydraulic cylinder 7；The supporting block 16 is fixed on the pedestal 14, described
The upper surface of supporting block 16 is arranged for placing tested shaft 15, the side that the tested shaft 15 is located in the supporting block 16
There is block, the height of the block is lower than the diameter of the tested shaft 15, and the lower end of the grip block 17 is rectangular in shape, described
For a line of square against the other side of the tested shaft 15, the Article 2 side of the square compresses described tested turn
The top of axis 15, and the length of a line of the square is less than the diameter of the tested shaft 15；The guide rail 20 hangs down
It is directly set to 14 on the pedestal, the grip block 17 and the loading blocks 18 are successively placed on the guide rail 20, and the clamping
Block 17 and the loading blocks 18 can be slided up and down along the guide rail 20, and the top of the loading blocks 18 is equipped with loading bolt 19, institute
It states loading bolt 19 to screw in the loading blocks 18, the end of the hydraulic stem of the hydraulic cylinder 7 is against the loading bolt 19, institute
Hydraulic cylinder 7 is stated for applying active force to the loading bolt.
Special supporting block 16 and grip block 17 is arranged for fixing in shaft radial load loading device provided by the invention
Tested shaft 15 is applied the active force of vertical direction to loading blocks 16, grip block 17 by hydraulic cylinder 7, realized to tested shaft
The load of 15 carry out load, so as to realize the repeated bend test of tested shaft 15.
It further include fuel tank, hydraulic pump 1, first filter 2, the second filter 3, overflow valve 4, decompression in preferred scheme
Valve 5, electrohydraulic servo valve 6, the fuel tank have been respectively communicated with oil outlet pipe and oil return line, the hydraulic pump 1 by motor drive,
The hydraulic pump 1 is set in the oil outlet pipe, and the oil inlet of the hydraulic pump 1 is connected to the fuel tank, and the hydraulic pump 1 goes out
Hydraulic fluid port is connected to the oil inlet of the electrohydraulic servo valve 6, and the hydraulic cylinder 7 has bar to the oil outlet of the electrohydraulic servo valve 6 respectively
Chamber and rodless cavity, the oil outlet of the hydraulic cylinder 7 are connected to the oil return opening of the electrohydraulic servo valve 6, and the electrohydraulic servo valve 6 goes out
Hydraulic fluid port is connected to the oil return line.
The first filter 2, the second filter 3, the pressure reducing valve 5 be successively set on the hydraulic pump 1 be connected to it is described
In the oil outlet pipe of electrohydraulic servo valve 6, the oil outlet pipe between the first filter 2, the second filter 3 is equipped with described overflow
Valve 4 is flowed, the oil inlet of the overflow valve 4 is connected to oil outlet pipe, and the oil outlet of the overflow valve 4 is connected to oil return line, overflow valve 4
Pressure excessively high in oil outlet pipe can be drained into oil return line, and then flow back to fuel tank.
In preferred scheme, it is equipped with pressure gauge 13, on the pipeline that overflow valve 4 is connected to oil outlet pipe to detect flowline
The pressure on road.
In preferred scheme, displacement sensor 8 is equipped on the hydraulic stem of hydraulic cylinder 7, for detecting the effect of hydraulic cylinder 7
Stroke.
In preferred scheme, the oil outlet pipe of 1 oil outlet of hydraulic pump is equipped with check valve, the hydraulic pump 1
Oil outlet is connected to the oil inlet of the check valve, and check valve can prevent the hydraulic oil in oil outlet pipe from backflow phenomenon occur.
In preferred scheme, the oil outlet pipe between the first filter 2, the second filter 3 is equipped with cut-off valve group
9, accumulator 10, the oil inlet of the cut-off valve group 9 are connected to the oil outlet pipe, and the oil outlet of the cut-off valve group 9 is connected to institute
State accumulator 10.The setting cut-off valve group 9, accumulator 10 in oil outlet pipe, when hydraulic pump 1 starts, excessive pressure can be with
Part enters in accumulator 10, and instantaneous pressure is to electrohydraulic servo valve 6, oil outlet pipe and hydraulic when can prevent hydraulic pump 1 from starting
The hydraulic parts such as cylinder 7 cause impacting with high pressure, so as to extend the service life of each hydraulic part.
In preferred scheme, the first filter 2 is the oil filter with by-passing valve.In order to prevent because of first filter
2 block and hydraulic pump 1 are overloaded or causes filter core broken, in the oil strain channel parallel connection by-passing valve of first filter 2, Huo Zhehe
The clogging indicator in parallel of first filter 2, if blocking, can with and alarm.
In preferred scheme, second filter 3 is high pressure filter.Because oil outlet pipe pressure is larger, the second mistake
Filter 3 can resist high pressure.
In preferred scheme, the oil return line is equipped with water cooler 11, and the water cooler 11 is used for oil return pipe
Hydraulic oil in road is cooled down, and hydraulic cylinder 7 can generate a large amount of heat in mechanism, so that the temperature liter of hydraulic oil
Height, in order to avoid the temperature for entering hydraulic oil in fuel tank is too high, the water cooler 11 that is arranged on oil return line can be to returning
Hydraulic oil in oil pipe line is cooled down.
In preferred scheme, the oil return line is equipped with third filter 12, the oil outlet of the third filter 12
It is connected to fuel tank.Third filter 12 has biggish through-current capability, the pressure loss small, can be filled into miscellaneous in oil return line
Matter, to prevent impurity from entering fuel tank.
In preferred scheme, the third filter 12 is the oil filter with by-passing valve.In order to prevent because third filters
Device 12 blocks and makes oil return line oil pressure excessive or cause filter core broken, bypasses in the oil strain channel parallel connection of third filter 12
Valve, or with the clogging indicator in parallel of third filter 12, if blocking, can with and alarm.
In preferred scheme, force snesor is equipped in the loading blocks 18.Force snesor exists for measuring tested shaft 15
The size of the radial load born carries out data analysis to be supplied to fatigue test control system.
In preferred scheme, the pedestal 14 is equipped with groove, and the supporting block 16 is bolted on the groove
Interior, this structure can make supporting block 16 in stress, be not susceptible to the displacement of horizontal direction, prevent because of supporting block 16
The inaccuracy of experimental data caused by offset.
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, when not going beyond the spirit of the description and the drawings,
It should all be within the scope of the present invention.
Claims (7)
1. a kind of shaft radial load loading device, which is characterized in that including pedestal, supporting block, grip block, loading blocks, load
Bolt, guide rail, hydraulic cylinder；The supporting block is fixed on the pedestal, and the upper surface of the supporting block is for placing tested turn
Axis, the side that the tested shaft is located in the supporting block are provided with block, and the height of the block tested turns lower than described
The lower end of the diameter of axis, the grip block is rectangular in shape, and a line of the square is against the another of the tested shaft
Side, the Article 2 side of the square compresses the top of the tested shaft, and the length of a line of the square is small
In the diameter of the tested shaft；The guide rail is vertical on the pedestal, and the grip block and the loading blocks successively cover
In on the guide rail, and the grip block and the loading blocks can be slided up and down along the guide rail, be set at the top of the loading blocks
There is loading bolt, the loading bolt screws in the loading blocks, and the end of the hydraulic stem of the hydraulic cylinder is against the load
Bolt, the hydraulic cylinder are used to apply active force to the loading bolt.
2. shaft radial load loading device according to claim 1, which is characterized in that further include fuel tank, hydraulic pump,
One filter, the second filter, overflow valve, pressure reducing valve, electrohydraulic servo valve, the fuel tank have been respectively communicated with oil outlet pipe and oil return
Pipeline, the hydraulic pump are set in the oil outlet pipe by motor drive, the hydraulic pump, and the oil inlet of the hydraulic pump connects
Lead to the fuel tank, the oil outlet of the hydraulic pump is connected to the oil inlet of the electrohydraulic servo valve, the electrohydraulic servo valve it is fuel-displaced
The rod chamber and rodless cavity of the mouth difference hydraulic cylinder, the oil outlet of the hydraulic cylinder are connected to the oil return of the electrohydraulic servo valve
Mouthful, the oil outlet of the electrohydraulic servo valve is connected to the oil return line；The first filter, the second filter, the decompression
Valve is successively set on the hydraulic pump and is connected in the oil outlet pipe of the electrohydraulic servo valve, the first filter, the second filtering
Oil outlet pipe between device is equipped with the overflow valve, and the oil inlet of the overflow valve is connected to oil outlet pipe, the overflow valve
Oil outlet is connected to oil return line.
3. shaft radial load loading device according to claim 2, which is characterized in that the hydraulic pump oil outlet
Oil outlet pipe is equipped with check valve, and the oil outlet of the hydraulic pump is connected to the oil inlet of the check valve.
4. shaft radial load loading device according to claim 2, which is characterized in that the oil return line is equipped with water
Cooler, the water cooler is for cooling down the hydraulic oil in oil return line.
5. shaft radial load loading device according to claim 2, which is characterized in that the oil return line is equipped with the
The oil outlet of three oil filters, the third oil filter is connected to fuel tank.
6. shaft radial load loading device according to claim 1, which is characterized in that be equipped with power in the loading blocks and pass
Sensor.
7. shaft radial load loading device according to claim 1, which is characterized in that the pedestal is equipped with groove,
The supporting block is bolted in the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810870139.XA CN109142109A (en) | 2018-08-02 | 2018-08-02 | Shaft radial load loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810870139.XA CN109142109A (en) | 2018-08-02 | 2018-08-02 | Shaft radial load loading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109142109A true CN109142109A (en) | 2019-01-04 |
Family
ID=64798643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810870139.XA Pending CN109142109A (en) | 2018-08-02 | 2018-08-02 | Shaft radial load loading device |
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| CN (1) | CN109142109A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108577A (en) * | 2019-05-28 | 2019-08-09 | 中国航空发动机研究院 | Thin-wall construction axial bending loading device |
| CN112051041A (en) * | 2020-08-03 | 2020-12-08 | 人本股份有限公司 | Rotating shaft compressive strength detection device |
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| CN203548373U (en) * | 2013-09-27 | 2014-04-16 | 重庆市科学技术研究院 | Servo hydraulic system |
| CN205580892U (en) * | 2016-05-04 | 2016-09-14 | 云南省建设工程质量检测中心有限公司 | Metal bending property detection device |
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| CN109030195A (en) * | 2018-08-02 | 2018-12-18 | 河北工业大学 | Test device for different-thickness part fatigue test |
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2018
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| CN108956307A (en) * | 2018-08-02 | 2018-12-07 | 河北工业大学 | Repeated bend test hydraulic test system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108577A (en) * | 2019-05-28 | 2019-08-09 | 中国航空发动机研究院 | Thin-wall construction axial bending loading device |
| CN110108577B (en) * | 2019-05-28 | 2021-11-19 | 中国航空发动机研究院 | Axial bending loading device for thin-wall structure |
| CN112051041A (en) * | 2020-08-03 | 2020-12-08 | 人本股份有限公司 | Rotating shaft compressive strength detection device |
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