CN207894728U - A kind of test fixture for ω structure railway elastic bars - Google Patents
A kind of test fixture for ω structure railway elastic bars Download PDFInfo
- Publication number
- CN207894728U CN207894728U CN201820072523.0U CN201820072523U CN207894728U CN 207894728 U CN207894728 U CN 207894728U CN 201820072523 U CN201820072523 U CN 201820072523U CN 207894728 U CN207894728 U CN 207894728U
- Authority
- CN
- China
- Prior art keywords
- backing plate
- plate pedestal
- pressure sensor
- fixed
- spring
- Prior art date
- 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.)
- Expired - Fee Related
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 18
- 238000006073 displacement reaction Methods 0.000 claims abstract description 33
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000009434 installation Methods 0.000 claims description 3
- 238000011068 loading method Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
Abstract
The utility model is related to a kind of test fixtures for ω structure railway elastic bars, belong to railway engineering technology field.Displacement sensor, pressure sensor and the elastic bar fastener support base and upper jaw that the utility model includes backing plate pedestal, is fixed on backing plate pedestal；Wherein backing plate pedestal is connected by screw thread stock with axially loaded fatigue tester, displacement sensor is fixed on backing plate pedestal one end by adjustable screw, elastic bar fastener support base is fixed on the other end of backing plate pedestal, and pressure sensor is fixed on backing plate pedestal by pressure sensor hold-down support and pressure sensor is between displacement sensor and elastic bar fastener support base；Upper jaw is clamped on axially loaded fatigue tester.The utility model is simple in structure, spring it is easy to loading and unloading, be applicable to current existing axially loaded fatigue tester, carry out real-time data acquisition with computer, compare intuitive and convenient, and can flexibly dismantle the elastic bar fastener system for different model.
Description
Technical field
The utility model is related to a kind of test fixtures for ω structure railway elastic bars, belong to railway engineering technology field.
Background technology
With economic fast development, the traffic transport industry in China has also gradually marched toward the fast-developing new era, and
Mainstay one of of the high-speed railway as traffic and transport field, has even more welcome unprecedented progress.Elastic bar fastener system
It is a part and parcel in the railway system again, in Practical Project, since to produce complexity more for train travelling process rail system
The load of change makes fastener system bear the alternate stresses such as long-term, periodic bending and torsion under these dynamic loadings
Effect, thus caused a series of fatigue problems of fastener system.This test fixture is designed based on this, this test fixture both can be with
The practical working situation of spring fastener system is simulated, more true experimental result is obtained.It again can be in existing axially loaded examination
It tests on machine and is applicable in.CYCLIC LOADING number, the change in displacement situation of spring middle part front end and support bullet can be acquired in real time simultaneously
The pressure changing at position.
Invention content
The utility model provides a kind of test fixture for ω structure railway elastic bars, to simulate spring fastener system
Practical working situation.
The technical solution of the utility model：A kind of test fixture for ω structure railway elastic bars, including backing plate pedestal 1,
Displacement sensor 10, pressure sensor 7 and elastic bar fastener support base 11 and the upper jaw 12 being fixed on backing plate pedestal 1；
Wherein backing plate pedestal 1 is connected by screw thread stock 3 with axially loaded fatigue tester, and displacement sensor 10 passes through adjustable screw
9 are fixed on 1 one end of backing plate pedestal, and elastic bar fastener support base 11 is fixed on the other end of backing plate pedestal 1, and pressure sensor 7 passes through
Pressure sensor hold-down support 6 is fixed on backing plate pedestal 1 and pressure sensor 7 is located at displacement sensor 10 and elastic bar fastener branch
Between support seat 11；Upper jaw 12 is clamped on axially loaded fatigue tester.
Further, there are two the pressure sensors 7, the upper end is contacted with the both side ends of spring 13 to be measured respectively；
Institute's displacement sensors 10 and end in contact before the middle part of spring to be measured；The lower surface of the upper jaw 12 and spring 13 to be measured
Load point contact.
Further, the pressure sensor 7 is pillar strain transducer, and range is true according to the intensity of spring 13 to be measured
Fixed, area of section is determined according to experimental condition.
Further, institute's displacement sensors 10 are cantilever beam strain-type sensor, and cantilever beam length is according to waiting for
It surveys spring 13 to determine, installation site is determined according to the requirement of range.
The operation principle of the utility model：In first wife's spring support base, the practical working situation of fastener is simulated；Pass through
Default iron chair and upper clamp are convenient for being clamped on current existing axially loaded fatigue tester；Before default iron chair
The pressure sensor of left and right is held to measure the situation of change of elastic bar fastener system pressure；By presetting the position among iron chair front end
Displacement sensor measures the change in displacement situation of elastic bar fastener system；In ω elastic bar fasteners system and experiment for different model
Hold, can flexibly change the range of pressure sensor and displacement sensor to reach corresponding experiment purpose.
This tests novel advantageous effect：Laboratory holder is simple, spring it is easy to loading and unloading, and be applicable at present it is existing
Axially loaded fatigue tester.Cycle-index, pressure change feelings can be acquired in real time by pressure sensor and displacement sensor
Condition, change in displacement situation, are used in combination computer data acquiring, compare intuitive and convenient.And it can flexibly dismantle for different model
The elastic bar fastener system of ω structure types.
Description of the drawings
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the structural schematic diagram of backing plate pedestal；
Fig. 3 is the structural schematic diagram of spring support base；
Fig. 4 is the structural schematic diagram of pressure sensor；
Fig. 5 is the structural schematic diagram of displacement sensor；
Fig. 6 is the structural schematic diagram of upper jaw；
In Fig. 1-6：1- backing plate pedestals, 2- circular holes, 3- screw thread stocks, 4- bolt circular holes, 5- countersunk head screws, 6- pressure sensings
Device hold-down support, 7- pressure sensors, 8- thread circle holes, 9- adjustable screws, 10- displacement sensors, the support of 11- elastic bar fasteners
Seat, 12- upper jaws, 13- springs to be measured.
Specific implementation mode
The utility model is described in further detail in the following with reference to the drawings and specific embodiments.
Embodiment 1：As shown in Figs. 1-2, the utility model includes backing plate pedestal 1, the displacement that is fixed on backing plate pedestal 1 passes
Sensor 10, pressure sensor 7 and elastic bar fastener support base 11 and upper jaw 12；Wherein backing plate pedestal 1 passes through screw thread stock 3
It is connected with axially loaded fatigue tester, displacement sensor 10 is fixed on 1 one end of backing plate pedestal, spring by adjustable screw 9
Fastener support base 11 is fixed on the other end of backing plate pedestal 1, and pressure sensor 7 is fixed on by pressure sensor hold-down support 6
On backing plate pedestal 1 and pressure sensor 7 is between displacement sensor 10 and elastic bar fastener support base 11；Upper jaw 12 is clamped
On axially loaded fatigue tester.
When test, there are two pressure sensor 7 is set, the upper end is contacted with the both side ends of spring 13 to be measured respectively；It is described
Displacement sensor 10 and end in contact before the middle part of spring to be measured；The load of the lower surface of the upper jaw 12 and spring 13 to be measured
Point contact.
Embodiment 2：As shown in figure 4, wherein pressure sensor 7 is pillar strain transducer, range is according to spring to be measured
13 intensity determines that area of section is determined according to experimental condition.
As shown in figure 5, wherein displacement sensor 10 is cantilever beam strain-type sensor, cantilever beam length is according to waiting for
It surveys spring 13 to determine, installation site is determined according to the requirement of range.
Embodiment 3：As shown in figures 1 to 6, wherein 1 generally use iron of backing plate pedestal is made, and the bottom of backing plate pedestal 1 offers
Circular hole 2 is simultaneously connected by screw thread stock 3 with axial fatigue machine, and adjustment screw thread stock 3 is to proper height so that clamping is trying
It tests on machine.Eight bolt circular holes 4 are reserved at left and right sides of 1 front end of backing plate pedestal（Per the reserved bolt circular hole in side four）Use countersunk head screw
5 are connected with pressure sensor hold-down support 6, and pressure sensor 7 is placed in pressure sensor hold-down support 6 in a manner of sleeve
On, the top of pressure sensor 7 and end in contact before the both sides of spring 13 to be measured, with aviation plug extraction wire and collecting device
It is connected, wherein spring to be measured 13 is ω structures.Among 1 front end of backing plate pedestal by thread circle hole 8 with adjustable screw 9 with
Displacement sensor 10 is connected, and adjusts and flushed among 13 front end of level height and spring to be measured of adjustable screw 9, displacement sensing
The cantilever front end of device 10 and end in contact before the middle part of spring 13 to be measured.The arm length of displacement sensor 10 can be adjusted as needed
Degree, cantilever end is compressed by bolt.After elastic bar fastener support base 11 is then fixed on backing plate pedestal 1 in such a way that bolt anchors
The end left and right sides.Upper jaw 12 is then clamped on axially loaded fatigue tester, the lower surface of upper jaw 12 then with it is to be measured
The load point contact of spring 13, to simulate spring actual condition.Above-mentioned pressure sensor 7 and displacement sensor 10 is working
When be connected with computer, can by program on computer acquisition is to spring fatigue test in real time when pressure changing and displacement become
Change situation.Spring 13 to be measured is placed on elastic bar fastener support base, you can carry out the fatigue experiment of elastic rod rail fastening.If into
The spring of row different model is tested, then the suitable displacement sensor 10 of design range and pressure sensor 7 is selected to be replaced i.e.
It can.
The specific embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the utility model is not
It is limited to the above embodiment, within the knowledge of a person skilled in the art, this practicality can also be not being departed from
Various changes can be made under the premise of novel objective.
Claims (6)
1. a kind of test fixture for ω structure railway elastic bars, it is characterised in that：Including backing plate pedestal（1）, be fixed on backing plate
Pedestal（1）On displacement sensor（10）, pressure sensor（7）With elastic bar fastener support base（11）And upper jaw（12）；
Wherein backing plate pedestal（1）Pass through screw thread stock（3）It is connected with axially loaded fatigue tester, displacement sensor（10）Pass through
Adjustable screw（9）It is fixed on backing plate pedestal（1）One end, elastic bar fastener support base（11）It is fixed on backing plate pedestal（1）It is another
End, pressure sensor（7）Pass through pressure sensor hold-down support（6）It is fixed on backing plate pedestal（1）Upper and pressure sensor（7）Position
In displacement sensor（10）With elastic bar fastener support base（11）Between；Upper jaw（12）It is clamped in axially loaded fatigue tester
On.
2. the test fixture according to claim 1 for ω structure railway elastic bars, it is characterised in that：The pressure sensing
Device（7）There are two, the upper end respectively with spring to be measured（13）Both side ends contact；Institute's displacement sensors（10）With bullet to be measured
End in contact before the middle part of item；The upper jaw（12）Lower surface and spring to be measured（13）Load point contact.
3. the test fixture according to claim 1 or 2 for ω structure railway elastic bars, it is characterised in that：The pressure
Sensor（7）For pillar strain transducer.
4. the test fixture according to claim 3 for ω structure railway elastic bars, it is characterised in that：The pressure sensing
Device（7）Range according to spring to be measured（13）Intensity determine that area of section determines according to experimental condition.
5. the test fixture according to claim 1 or 2 for ω structure railway elastic bars, it is characterised in that：The displacement
Sensor（10）For cantilever beam strain-type sensor.
6. the test fixture according to claim 5 for ω structure railway elastic bars, it is characterised in that：The displacement sensing
Device（10）Cantilever beam length according to spring to be measured（13）It determines, installation site is determined according to the requirement of range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820072523.0U CN207894728U (en) | 2018-01-17 | 2018-01-17 | A kind of test fixture for ω structure railway elastic bars |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820072523.0U CN207894728U (en) | 2018-01-17 | 2018-01-17 | A kind of test fixture for ω structure railway elastic bars |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207894728U true CN207894728U (en) | 2018-09-21 |
Family
ID=63552282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820072523.0U Expired - Fee Related CN207894728U (en) | 2018-01-17 | 2018-01-17 | A kind of test fixture for ω structure railway elastic bars |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207894728U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108106931A (en) * | 2018-01-17 | 2018-06-01 | 昆明理工大学 | A kind of test fixture for ω structure railway elastic bars |
| CN109596434A (en) * | 2018-12-20 | 2019-04-09 | 安徽省巢湖铸造厂有限责任公司 | E type elastic-strip pressure test fixture and its localization method |
| CN110018054A (en) * | 2019-03-27 | 2019-07-16 | 北京铁科首钢轨道技术股份有限公司 | A kind of multistation spring fatigue tooling |
-
2018
- 2018-01-17 CN CN201820072523.0U patent/CN207894728U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108106931A (en) * | 2018-01-17 | 2018-06-01 | 昆明理工大学 | A kind of test fixture for ω structure railway elastic bars |
| CN108106931B (en) * | 2018-01-17 | 2024-03-22 | 昆明理工大学 | Test fixture for omega-structure railway spring strip |
| CN109596434A (en) * | 2018-12-20 | 2019-04-09 | 安徽省巢湖铸造厂有限责任公司 | E type elastic-strip pressure test fixture and its localization method |
| CN109596434B (en) * | 2018-12-20 | 2021-08-24 | 安徽省巢湖铸造厂有限责任公司 | Positioning device for testing buckling force of e-shaped elastic strip and positioning method thereof |
| CN110018054A (en) * | 2019-03-27 | 2019-07-16 | 北京铁科首钢轨道技术股份有限公司 | A kind of multistation spring fatigue tooling |
| CN110018054B (en) * | 2019-03-27 | 2023-12-26 | 北京铁科首钢轨道技术股份有限公司 | Multi-station spring bar fatigue tool |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180921 Termination date: 20200117 |
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| CF01 | Termination of patent right due to non-payment of annual fee |