CN107727520A - A kind of Multiaxial Non-proportional fatigue test system based on centrifugation loading - Google Patents
A kind of Multiaxial Non-proportional fatigue test system based on centrifugation loading Download PDFInfo
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- CN107727520A CN107727520A CN201710815354.5A CN201710815354A CN107727520A CN 107727520 A CN107727520 A CN 107727520A CN 201710815354 A CN201710815354 A CN 201710815354A CN 107727520 A CN107727520 A CN 107727520A
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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
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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
- G01N3/02—Details
- G01N3/04—Chucks
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- 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
- G01N2203/0026—Combination of several types of applied forces
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- 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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- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
- G01N2203/0423—Chucks, fixtures, jaws, holders or anvils using screws
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to a kind of Multiaxial Non-proportional fatigue test system based on centrifugation loading.The present invention includes load transducer, centrifugation multi-axial non-proportional loading portion and fatigue testing specimen；Centrifuging multi-axial non-proportional loading portion includes rotating loading cross bar, loading support and clamp assembly, loading cross bar is rotated to be arranged in loading support by bearing, rotate loading cross bar both ends and be respectively fixed with left avertence concentric mechanism, right avertence concentric mechanism, loading support is among left avertence concentric mechanism and right avertence concentric mechanism；Clamp assembly includes upper fixture and lower clamp, and loading support is fixed with the upper fixture and drives upper fixture to apply Multiaxial Non-proportional fatigue load to the fatigue testing specimen when rotating loading cross bar and rotating.The present apparatus applies Multiaxial Non-proportional fatigue load by way of centrifugal force, the deficiency that existing multiaxle fatigue experimental system is difficult to apply the combined loads such as disproportional tension and compression bending, flexion torsion can be made up, efficiency test means are provided to carry out fatigue of materials performance study under the conditions of complex loading.
Description
Technical field
The invention belongs to Material Testing Technology field, is specifically related to a kind of Multiaxial Non-proportional fatigue based on centrifugation loading
Pilot system.
Background technology
In actual applications, many engineering components and component of machine subject the effect of multiaxis cyclic loading.It is for example, past
The bent axle of compound compression machine and reciprocating pump bears to come self-propelling device and the time-varying moment of flexure of connecting rod and the comprehensive function of moment of torsion, and automobile passes
Moving axis is subjected to the synergy of shear stress superposition axial stress as caused by bending as caused by moment of torsion, towering tower kind equipment wind
The effect of fatigue load of shaking and change internal pressure, submarine pipeline bear ocean current and induce vortex-induced vibration and fluctuation internal pressure effect etc..Fatigue
It is one of its most common failure mode.Although the research on fatigue has exceeded one-hundred-year history, but still focus mostly on and answered in single shaft
In terms of fatigue rupture caused by power effect.With deepening continuously for research, non-proportional loading problem has triggered increasing concern.
The fatigue tester of Current commercial mainly uses the modes such as axially loaded, rotoflector loading, although wherein one
It is a little to have realized tension and compression-torsion combination loading, but still be difficult to meet the non-proportional loadings such as disproportional tension and compression-bending, bending-torsion
Experiment demand, it would be highly desirable to corresponding multiaxle fatigue experimental system is researched and developed, to carry out fatigue of materials performance study under the conditions of complex loading
Effective research technique is provided.
The content of the invention
In order to solve the above-mentioned technical problem, the present invention provides a kind of Multiaxial Non-proportional fatigue test system based on centrifugation loading
System, existing commercialized multiaxle fatigue experimental system can be made up and be difficult to apply the combination such as disproportional tension and compression-bending, bending-torsion
The deficiency of load, effective research technique is provided to carry out the fatigue of materials performance study under the conditions of complex loading.
In order to realize the purpose of the present invention, present invention employs following technical scheme：
A kind of Multiaxial Non-proportional fatigue test system based on centrifugation loading, including load transducer, the centrifugation non-ratio of multiaxis
Example loading unit and fatigue testing specimen；The centrifugation multi-axial non-proportional loading portion includes rotating loading cross bar, loading support and folder
Has component, the loading cross bar that rotates is arranged in the loading support by bearing, and the loading cross bar left end that rotates is fixed
There is left avertence concentric mechanism, the loading cross bar right-hand member that rotates is fixed with right avertence concentric mechanism, and the loading support is located at the left avertence heart
Among mechanism and right avertence concentric mechanism；The clamp assembly includes vertically clamping the upper fixture and lower clamp of fatigue testing specimen, described
Loading support is fixed with the upper fixture and drives the upper fixture to try the fatigue in described rotate when loading cross bar rotates
Sample applies Multiaxial Non-proportional fatigue load.
Further, the system includes motor and driving section, and the driving section includes being connected with the motor
Drive link, the drive link and it is described rotate loading cross bar it is axially in parallel, upper driving wheel disk, institute are fixed with the drive link
State rotation loading cross bar centre position and be fixed with underdrive wheel disc, the upper driving wheel disk by driving belt drive it is described under pass
Runner disc rotates.
Further, the left avertence concentric mechanism includes left loading wheel disc and left mass, and the right avertence concentric mechanism includes the right side
Wheel disc and right mass are loaded, the left loading wheel disc, right loading wheel disc are equal for circular and diameter, the left loading wheel
Disk, right loading wheel disk center rotate the axially coincident of loading cross bar with described, and the left mass is arranged on the left loading wheel
Any place of plate edge simultaneously forms the left avertence concentric mechanism, and the right mass is arranged on any of the right loading wheel plate edge
Place simultaneously forms the right avertence concentric mechanism.
Further, the loading cross bar both ends that rotate are in suspended state, and the loading cross bar that rotates includes being used to install institute
State the dynamic loading cross bar of left-hand rotation of left loading wheel disc and the dynamic loading cross bar of right-hand rotation for installing the right loading wheel disc, the left side
Rotate loading cross bar to be arranged in the loading support by the dynamic loading cross bar bearing that turns left, the dynamic loading cross bar of turning right passes through
Dynamic loading cross bar bearing of turning right is arranged in the loading support.
Further, the left loading wheel disc, the edge of right loading wheel disc convex to form flange, the left matter to both sides respectively
C-type bayonet socket is respectively equipped with gauge block, right mass, the left mass is engaged and installed in the left loading wheel by c-type bayonet socket
On the flange of disk, the right mass is engaged and installed in by c-type bayonet socket on the flange of the right loading wheel disc.
Further, the system also includes ballistic support structure, and the ballistic support structure is including support base and vertically
In support base and left stringer board positioned opposite, right stringer board, it is connected with and is horizontally mounted between the left stringer board, right stringer board
Transverse slat, offer left stringer board security protection hole on the left stringer board, right stringer board security protection hole offered on the right stringer board,
Transverse slat security protection hole is offered on the transverse slat；
Left Drive bearing is installed on the left stringer board, right drive bearing, the drive link are installed on the right stringer board
It is arranged on by the Left Drive bearing, right drive bearing in the ballistic support structure；
The loading cross bar left end that rotates is through the left stringer board security protection hole and left stringer board security protection hole
Leave safe spacing, it is described rotate loading cross bar right-hand member through the right stringer board security protection hole and with right stringer board security protection hole
Between leave safe spacing, the upper fixture is in shaft-like and vertically through the transverse slat security protection hole and anti-safely with transverse slat
Safe spacing is left between guard aperture, the upper fixture upper end is fixed with the loading support, and the upper fixture lower end acts on institute
State fatigue testing specimen.
Further, the loading support is made up of the square box arranged vertically, and the loading cross bar that rotates passes perpendicularly through institute
State one group of relative frame side of loading support, the underdrive wheel disc positioned at the loading support inframe, the left loading wheel disc,
Right loading wheel disc is symmetrically mounted on the both sides of the loading support.
Further, load transducer is disposed with the support base, the lower clamp is placed on the load transducer
On.
The beneficial effects of the present invention are：
1), the present invention at work, centrifugation multi-axial non-proportional loading portion by adjust quality block size, fixed position and
The rotating speed for loading wheel disc can be that the fatigue testing specimen applies different disproportional tension and compression, bending, reverses the fatigue that combination is formed
Load is (for multiaxis is with respect to single shaft, i.e., including two kinds of tension and compression, bending, torsion etc. and above plus load form, disproportional
Refer in non-linear relation change between various forms of plus loads), existing commercialized multiaxle fatigue experimental system can be made up
System is difficult to the deficiency for applying the combined loads such as disproportional tension and compression-bending, bending-torsion, to carry out the material under the conditions of complex loading
Expect that fatigue behaviour research provides effective research technique.
2) it is T-shaped, to centrifuge section at the loading wheel plate edge in multi-axial non-proportional loading portion, and mass is provided with c-type bayonet socket,
The mass is fastened by bolts in the edge of the loading wheel disc, and the mass can be along the loading wheel plate edge
Any position is fastened, to meet the experiment demand of various combination load.
3), the driving belt of driving section is elastic by adjusting, and can eliminate the influence of centrifugation multi-axial non-proportional loading portion deadweight,
In addition, when fatigue testing specimen is broken, belt can hang centrifugation multi-axial non-proportional loading portion, effectively protect the disconnected of fatigue testing specimen
Mouthful.
4), it is provided with load sensing between the ballistic support structure in the present invention and the centrifugation multi-axial non-proportional loading portion
Device, to monitor load change during fatigue test and judge that sample fails, centrifugation can be timely and effectively controlled to load multiaxis
Disproportional fatigue test system is closed down.
5) security protection hole, is equipped with the security protection transverse slat of the ballistic support structure, left stringer board and right stringer board, point
It is other to upper fixture, turn left dynamic loading cross bar and dynamic loading cross bar of turning right plays limitation and protective effect, the present invention is simple in construction effectively,
Maintenance easy to operation.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention.
Fig. 2 is security protection and supporting construction schematic diagram.
Fig. 3 is centrifugation multi-axial non-proportional loading structural representation.
Fig. 4 is drive mechanism schematic diagram.
Fig. 5 is motor structural representation.
Fig. 6 a are a kind of typical mass position schematic diagrames.
Fig. 6 b are the tension and compression-bending disproportional fatigue loads formed with the change of mass phase corresponding with Fig. 6 a
Oscillogram.
Fig. 7 a are another typical mass position schematic diagrames.
Fig. 7 b are the tension and compression-bending disproportional fatigue loads formed with the change of mass phase corresponding with Fig. 7 a
Oscillogram.
The implication marked in figure is as follows：
10- ballistic support structure 11- support base 12- transverse slats
The left stringer board security protection holes of the left stringer board 13A- of 12A- transverse slat security protections hole 13-
The right stringer board security protection holes of the right stringer board 14A- of 14-
20- load transducers
30- centrifuges multi-axial non-proportional loading portion 31A- lower clamp 31B- upper fixtures
The right mass 33A- of the left mass 32B- of 32A- turn left to move loading cross bar
33B-, which turns right, moves the loading left loading right loading wheel discs of wheel disc 34B- of cross bar 34A-
35A- turns left to move the dynamic loading cross bar bearing of loading cross bar bearing 35B- right-hand rotations
36- loading support 37- underdrive wheel discs
40- fatigue testing specimens
The right drive bearings of 50- driving sections 51A- Left Drive bearing 51B-
52- drive link 53- upper driving wheel disk 54- driving belt 55- Left Drive flanges
The right drive flange 62- motors 63- motor cabinets of 60- motors 61-
Embodiment
More specific detail is made to technical solution of the present invention with reference to embodiment：
As shown in Fig. 1~5, the Multiaxial Non-proportional fatigue test system based on centrifugation loading includes following part：
Ballistic support structure 10, load transducer 20, centrifugation multi-axial non-proportional loading portion 30, fatigue testing specimen 40, driving section 50, driving electricity
Machine 60, as shown in Figure 1.The motor 60 provides via the driving section 50 to the centrifugation multi-axial non-proportional loading portion 30
Power, it is that the fatigue testing specimen 40 applies disproportional fatigue load by the centrifugation multi-axial non-proportional loading portion 30, it is described anti-
Load transducer 20 is provided between shield supporting construction 10 and the centrifugation multi-axial non-proportional loading portion 30.
As shown in Fig. 2 the ballistic support structure 10 includes support base 11, security protection transverse slat 12, a security protection left side
Stringer board 13 and the right stringer board 14 of security protection etc., the load transducer 20 is fixed on the support base 11, the transverse slat
12nd, transverse slat security protection hole 12A, left stringer board security protection hole 13A and right stringer board are respectively equipped with left stringer board 13 and right stringer board 14
Security protection hole 14A, the left stringer board security protection hole 13A play limitation and protective effect to the dynamic loading cross bar 33A that turns left, described
Right stringer board security protection hole 14A plays limitation and protective effect, the transverse slat security protection hole 12A to the dynamic loading cross bar 33B that turns right
Limitation and protective effect are risen to upper fixture 31B.
As shown in figure 3, the centrifugation multi-axial non-proportional loading portion 30 includes lower clamp 31A, upper fixture 31B, left mass
32A, right mass 32B, the dynamic loading cross bar 33A that turns left, the dynamic loading cross bar 33B that turns right, left loading wheel disc 34A, right loading wheel disc
34B, the dynamic loading cross bar bearing 35A that turns left, turn right dynamic loading cross bar bearing 35B, loading support 36 and underdrive wheel disc 37.Pass through
Adjust the left mass 32A and right mass 32B sizes, the fixed position and left loading wheel disc 34A and described
Right loading wheel disc 34B rotating speeds, can be that the fatigue testing specimen 40 applies different tension and compression, bending, the disproportional fatigue for reversing combination
Load, the left loading wheel disc 34A and right loading wheel disc 34B edge are using T-shaped section, the left mass 32A and described
Right mass 32B uses c-type bayonet socket, and is fastened respectively to the left loading wheel disc 34A's and right loading wheel disc 34B by bolt
Edge, the left mass 32A and the right mass 32B can be fastened along any position of loading wheel disc circumference, with
Meet the experiment demand of various combination load.Disproportional fatigue load caused by rotating centrifugal passes through the upper fixture 31B, described
Turn left the dynamic loading cross bar 33A and dynamic loading cross bar 33B that turns right, and is amplified according to lever principle after-applied in described tired
Labor sample 40, the upper fixture 31B, the left-hand rotation move loading cross bar 33A and the dynamic cross bar 33B that loads that turns right passes through loading branch
Support 36 is connected, and the left and right sides of support 36 that loads turns left to move loading cross bar 33A and the dynamic loading cross bar 33B that turns right with described
Between equipped with the dynamic loading cross bar bearing 35A of the left-hand rotation and the dynamic loading cross bar bearing 35B that turns right for being easy to rotate, it is described plus
The inframe for carrying support 36 is provided with the dynamic loading cross bar 33A of the drive left-hand rotation and the biography down moved and load cross bar 33B rotations of turning right
Runner disc 37.
The driving section 50 includes Left Drive bearing 51A, right drive bearing 51B, drive link 52, upper driving wheel disk 53, biography
Dynamic belt 54 and Left Drive flange 55, the driving section 50 are driven by the Left Drive flange 55 by the motor 60,
The drive link 52 is installed on the protection via the Left Drive bearing 51A beneficial to rotation and the right drive bearing 51B
In supporting construction 10, the drive link 52 is equipped with the upper driving wheel disk 53, is the underdrive by the driving belt 54
Wheel disc 37 provides power, and the driving belt 54 can adjust elastic to eliminate the deadweight of centrifugation multi-axial non-proportional loading portion 30
The fracture after being failed with the protection fatigue testing specimen 40 is influenceed, as shown in Figure 4.
The motor 60 includes right drive flange 61, motor 62 and motor cabinet 63, the right drive flange 61 and institute
The Left Drive flange 55 for stating driving section 50 connects, the motor 62 for this centrifugation multi-axial non-proportional loading portion provide needed for move
Power, the motor cabinet 63 is that the motor 62 provides support, and plays vibration and noise reducing, as shown in Figure 5.
Elaborated with reference to Fig. 1~6 pair experiment process of the invention：
It is small to feel at ease first by after the mach sanding and polishing of fatigue testing specimen 40 when the 1st, carrying out Multiaxial Non-proportional fatigue test
Loaded between lower specimen holder 31A and upper specimen holder 31B, the surface of fatigue testing specimen 40 of damaging is avoided.
2nd, needed to select left mass 32A and right mass 32B sizes according to experiment, and after adjusting phase difference, passed through
Fastening bolt is individually fixed on left loading wheel disc 34A and right loading wheel disc 34B.
Fig. 6 a, 6b and Fig. 7 a, 7b give two kinds of typical non-proportion loading examples.
Wherein shown in Fig. 6 a is a kind of typical mass position view, and Fig. 6 b are corresponding with Fig. 6 a with quality
The change of block phase and the tension and compression-bending disproportional fatigue load oscillogram formed, left mass 32A and the right side shown in Fig. 6 a
Mass 32B positions are identical, and flexural fatigue load lags behind 90 ° of drawingand pressing fatigue load.
As Fig. 7 a, 7b show another typical mass position view, Fig. 7 b are corresponding with Fig. 7 a with matter
The change of gauge block phase and the bending-torsion disproportional fatigue load oscillogram formed, left mass 32A shown in Fig. 7 a and
Right mass 32B positions are on the contrary, flexural fatigue load is ahead of 90 ° of torsional fatigue load.
3rd, left mass 32A and right mass 32B are adjusted to horizontal level, constantly adjust the elastic of driving belt 54, directly
It is zero influence conducted oneself with dignity with elimination centrifugation multi-axial non-proportional loading portion 30 to the apparent value of load transducer 20.
4th, slowly rotating each part operation in the observation centrifugation multi-axial non-proportional loading of drive link 52 portion 30 and driving section 50 is
It is no steady, check transverse slat security protection hole 12A, the left stringer board security protection hole 13A and right stringer board safety of ballistic support structure 10
Anti- guard aperture 14A is with centrifuging the upper fixture 31B in multi-axial non-proportional loading portion 30, turning left to move loading cross bar 33A and turn right to move loading horizontal stroke
Whether enough safe distance is left between bar 33B.
5th, according to specific experiment needs, calculate and the suitable rotating speed of motor 60 is set, start motor 60, start
Experiment.
6th, after completing experiment, the fatigue testing specimen 40 of failure is carefully removed, protects fracture surface of sample so that follow-up test is observed
With analysis, left mass 32A and right mass 32B size, position, left loading wheel disc 34A and the right loading wheel disc are recorded
34B rotating speed, and fatigue load circulation cycle.
Claims (8)
- A kind of 1. Multiaxial Non-proportional fatigue test system based on centrifugation loading, it is characterised in that：Including load transducer (20), Centrifuge multi-axial non-proportional loading portion (30) and fatigue testing specimen (40)；Centrifugation multi-axial non-proportional loading portion (30) includes rotating Cross bar, loading support (36) and clamp assembly are loaded, the rotation loading cross bar is arranged on the loading by bearing and supported (36) on, the loading cross bar left end that rotates is fixed with left avertence concentric mechanism, and the loading cross bar right-hand member that rotates is fixed with the right avertence heart Mechanism, the loading support (36) are located among the left avertence concentric mechanism and right avertence concentric mechanism；The clamp assembly is included along perpendicular To the upper fixture (31B) and lower clamp (31A) of clamping fatigue testing specimen (40), the loading support (36) and the upper fixture (31B) is fixed and drives the upper fixture (31B) to apply the fatigue testing specimen (40) in described rotate when loading cross bar rotates Multiaxial Non-proportional fatigue load.
- 2. the Multiaxial Non-proportional fatigue test system as claimed in claim 1 based on centrifugation loading, it is characterised in that：The system Including motor (60) and driving section (50), the driving section (50) includes the transmission being connected with the motor (60) Bar (52), the drive link (52) and the loading cross bar that rotates are axially in parallel, and transmission is fixed with the drive link (52) Wheel disc (53), the loading cross bar centre position that rotates are fixed with underdrive wheel disc (37), and the upper driving wheel disk (53) passes through Driving belt (54) drives the underdrive wheel disc (37) to rotate.
- 3. the Multiaxial Non-proportional fatigue test system as claimed in claim 1 based on centrifugation loading, it is characterised in that：The left side Eccentric stiffener, which includes left loading wheel disc (34A) and left mass (32A), the right avertence concentric mechanism, includes right loading wheel disc (34B) and right mass (32B), the left loading wheel disc (34A), right loading wheel disc (34B) are equal for circular and diameter, institute State left loading wheel disc (34A), right loading wheel disc (34B) center and axially coincident, the left quality for rotating loading cross bar Block (32A) is arranged on any place at described left loading wheel disc (34A) edge and forms the left avertence concentric mechanism, the right mass (32B) is arranged on any place at described right loading wheel disc (34B) edge and forms the right avertence concentric mechanism.
- 4. the Multiaxial Non-proportional fatigue test system as claimed in claim 2 based on centrifugation loading, it is characterised in that：Described turn Dynamic loading cross bar both ends are in suspended state, and the loading cross bar that rotates includes being used for the left side for installing the left loading wheel disc (34A) Rotate loading cross bar (33A) and the dynamic loading cross bar (33B) of right-hand rotation for installing the right loading wheel disc (34B), the left side Rotate loading cross bar (33A) to be arranged on the loading support (36) by the dynamic loading cross bar bearing (35A) of left-hand rotation, the right-hand rotation Dynamic loading cross bar (33B) is arranged on the loading by dynamic loading cross bar bearing (35B) of turning right and supported on (36).
- 5. the Multiaxial Non-proportional fatigue test system as claimed in claim 3 based on centrifugation loading, it is characterised in that：The left side Loading wheel disc (34A), the edge of right loading wheel disc (34B) convex to form flange to both sides respectively, the left mass (32A), C-type bayonet socket is respectively equipped with right mass (32B), the left mass (32A) is engaged and installed in the left side by c-type bayonet socket and added On the flange for carrying wheel disc (34A), the right mass (32B) is engaged and installed in the right loading wheel disc (34B) by c-type bayonet socket Flange on.
- 6. the Multiaxial Non-proportional fatigue test system as claimed in claim 4 based on centrifugation loading, it is characterised in that：The system Also include ballistic support structure (10), the ballistic support structure (10) includes support base (11) and is vertically mounted on support On base (11) and left stringer board (13) positioned opposite, right stringer board (14), the left stringer board (13), right stringer board connect between (14) There is the transverse slat (12) being horizontally mounted, left stringer board security protection hole (13A), the right stringer board are offered on the left stringer board (13) (14) right stringer board security protection hole (14A) is offered on, transverse slat security protection hole (12A) is offered on the transverse slat (12)；Left Drive bearing (51A) is installed on the left stringer board (13), right drive bearing is installed on the right stringer board (14) (51B), the drive link (52) are arranged on the ballistic support by the Left Drive bearing (51A), right drive bearing (51B) In structure (10)；It is described rotate loading cross bar left end through the left stringer board security protection hole (13A) and with left stringer board security protection hole Leave safe spacing between (13A), it is described rotate loading cross bar right-hand member through the right stringer board security protection hole (14A) and with the right side Leave safe spacing between stringer board security protection hole (14A), the upper fixture (31B) is in shaft-like and vertically pass through the transverse slat Security protection hole (12A) and safe spacing is left between transverse slat security protection hole (12A), upper fixture (31B) upper end with The loading support (36) is fixed, and upper fixture (31B) lower end acts on the fatigue testing specimen (40).
- 7. the Multiaxial Non-proportional fatigue test system as claimed in claim 4 based on centrifugation loading, it is characterised in that：It is described to add Carry support (36) to be made up of the square box arranged vertically, described rotate loads cross bar passes perpendicularly through the loading support (36) one The relative frame side of group, the underdrive wheel disc (37) support the inframe of (36) positioned at the loading, the left loading wheel disc (34A), Right loading wheel disc (34B) is symmetrically mounted on the both sides of the loading support (36).
- 8. the Multiaxial Non-proportional fatigue test system as claimed in claim 6 based on centrifugation loading, it is characterised in that：The branch Load transducer (20) is disposed with support base (11), the lower clamp (31A) is placed on the load transducer (20).
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| CN201710815354.5A CN107727520B (en) | 2017-09-12 | 2017-09-12 | A kind of Multiaxial Non-proportional fatigue test system based on centrifugation load |
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| CN201710815354.5A CN107727520B (en) | 2017-09-12 | 2017-09-12 | A kind of Multiaxial Non-proportional fatigue test system based on centrifugation load |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112254940A (en) * | 2019-07-05 | 2021-01-22 | 中车长春轨道客车股份有限公司 | Testing device and testing method for axle fatigue test |
| CN112730046A (en) * | 2020-12-29 | 2021-04-30 | 济南鑫光试验机制造有限公司 | Integrated electric horizontal pushing chuck |
| CN113884399A (en) * | 2021-09-28 | 2022-01-04 | 兰州理工大学 | Metal material fatigue resistance detection device |
| CN114034585A (en) * | 2021-10-28 | 2022-02-11 | 北京理工大学 | Spline fatigue test device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112254940A (en) * | 2019-07-05 | 2021-01-22 | 中车长春轨道客车股份有限公司 | Testing device and testing method for axle fatigue test |
| CN112730046A (en) * | 2020-12-29 | 2021-04-30 | 济南鑫光试验机制造有限公司 | Integrated electric horizontal pushing chuck |
| CN113884399A (en) * | 2021-09-28 | 2022-01-04 | 兰州理工大学 | Metal material fatigue resistance detection device |
| CN114034585A (en) * | 2021-10-28 | 2022-02-11 | 北京理工大学 | Spline fatigue test device |
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