CN207556837U - A kind of railway elastic bar fatigue experimental device - Google Patents
A kind of railway elastic bar fatigue experimental device Download PDFInfo
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- CN207556837U CN207556837U CN201721849011.2U CN201721849011U CN207556837U CN 207556837 U CN207556837 U CN 207556837U CN 201721849011 U CN201721849011 U CN 201721849011U CN 207556837 U CN207556837 U CN 207556837U
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- spring
- mould
- pedestal
- elastic bar
- fatigue experimental
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Abstract
The utility model discloses a kind of railway elastic bar fatigue experimental devices, it is related to fatigue test of materials technical field, for solving the problems, such as that existing spring fatigue experimental device experiment is inaccurate, efficiency is low, energy consumption is big, it includes pedestal, pressure head, mould and spring, further include at least two support columns, support column is fixedly connected on pedestal described in two of which, the spring is set on the support column, the mould bottom is provided with groove, the mould is connected on pedestal, and the both ends of the spring press on the groove and the pressure head respectively.The utility model can prevent tired source from generating, exclude influence of the fretting wear to spring fatigue behaviour during experiment by the way that mould is set as channel-shaped, and in mould abrasive rubber layer Nian Jie with spring contact position.
Description
Technical field
The utility model is related to fatigue test of materials technical field, more particularly to a kind of railway elastic bar fatigue test
Device.
Background technology
Spring is the spring secures rail to sleeper being fixed on rail on sleeper or non-fragment orbit.With the fast development of railway cause,
Requirement to the type, quantity of spring is more and more, and the requirement to quality is more and more stringenter.Spring relationship between quality is to the peace of railway
Quan Xing, comfort, therefore, spring fatigue test are a very important inspection projects in its inspection.According to current standard TB/
T2329-2002, spring fatigue test are that spring is fixed in specific mould, in the application assembling displacement of its toe-end and herein
On the basis of apply dynamic displacement, whether observation spring is broken or produces after certain test number (TN) under fixed loading frequency
Raw crackle.Spring that is unbroken or cracking also needs the deflection before and after measurement experiment.
Since spring fatigue test frequency is high, the period is long, load is big, stability, experiment effect to spring fatigue tester
Rate has higher requirement.But there is no requirement is made to specific spring fatigue mould in standard TB/T2329-2002, through long
Phase tests, it has been found that and influence of the spring fatigue mould to spring load cycle number is extremely crucial, under same experiment condition,
The result difference that different moulds obtains is very big, it is impossible to which accurately the actual performance of reaction spring, domestic market are common
The following defect of spring fatigue tester generally existing：
1. tired mould disunity, different tests unit mould disunity and obtained data dependence is little, institute at present
The fatigue test compressing head and mould used is planar structure, and toe-end stress is maximum after spring during experiment, on this condition, bullet
Size is there are certain lateral displacement, if mould is plane, spring, there are certain fretting wear, causes with mould plane
Tired source generates, and spring is broken and is unable to the fatigue behaviour of accurate response spring, largely reduces the tired of spring in advance
The labor service life.
2. reference standard TB/T2329-2002, is calculated with frequency 10Hz, load cycle number will reach 5,000,000 times, last
Nearly six days, every spring fatigue tester can be only done the fatigue test of single-piece spring within a test period, efficiency it is low and
Energy consumption is big.
Accordingly, it is desirable to provide a kind of rational spring fatigue experimental device, excludes influence of the mould to its fatigue behaviour.
Utility model content
The purpose of this utility model is that：A kind of scientific and reasonable railway elastic bar fatigue experimental device is provided, it can be to more
Part spring is carried out at the same time fatigue test, and meets the fatigue test of different model spring.
The utility model specifically uses following technical scheme to achieve these goals：
A kind of railway elastic bar fatigue experimental device including pedestal, pressure head, mould and spring, further includes at least two supports
Column, support column described in two of which are fixedly connected on pedestal, and the spring is set on the support column, and the mould bottom is provided with
Groove, the mould are connected on pedestal, and the both ends of the spring press on the groove and the pressure head respectively.
The operation principle of the utility model base case is：Spring is preceding toe-end with pressure head contact jaw, with mould contact jaw
For rear toe-end, the amplitude of pressure head application+0.9mm to -0.5mm, test force are generally 8KN or so during fatigue test, this
When spring after toe-end stress it is maximum, there are certain lateral displacements for spring size, are channel-shaped by matrix design, during the experiment
Mould grooved position spring hallux end movement is restricted, toe-end before lateral displacement and friction transfer to spring, and spring front toe
The abrasion at end will not impact its fatigue behaviour, do so tired source caused by can eliminating fretting wear, accurately reflect
The fatigue behaviour of spring.
Further, the pedestal is consolidated including U-shaped section, rail segment and montant section, described rail segment one end with U-shaped section of one end
Fixed connection, the rail segment other end are fixedly connected with montant section end, and the mould is set on U-shaped section of pedestal, rail segment and erects
In the cavity that rod segment is formed.Doing so can utilize rail segment and montant section to bear the power that mould is subject to, and protect mould.
Further, the mould and pedestal rail segment are bolted.It does so and is convenient for changing various sizes of tire
Tool, meets the fatigue test of different model spring.
Further, the pressure head bottom is plane.This is done to the lateral displacement for generating rear toe-end and frictions
It is transferred to toe-end before spring.
Further, mould abrasive rubber layer Nian Jie with the spring contact position.It is tired this is done to prevent
The generation of Lao Yuan excludes influence of the fretting wear to spring fatigue behaviour during experiment.
The beneficial effects of the utility model are as follows：
1. the utility model by setting at least two support columns, is tested simultaneously suitable for a plurality of spring, efficiency, section are improved
About resource.
2. the utility model by mould by being set as channel-shaped, and in mould abrasive rubber Nian Jie with spring contact position
Layer, can limit toe-end lateral displacement after spring, prevent tired source from generating, and fretting wear is to spring fatigue during excluding experiment
The influence of performance accurately reflects the fatigue behaviour of spring.
3. the utility model is convenient for changing various sizes of mould, completely by the way that mould is set to be bolted with pedestal cross bar
The fatigue test of sufficient different model spring.
Description of the drawings
Fig. 1 is a kind of railway elastic bar fatigue experimental device structure diagram.
Reference numeral：1- moulds, 2- pressure heads, 3- pedestals, 31-U types section, 32- rail segments, 33- montants section, 4- springs, 5-
Support column, 6- bolts.
Specific embodiment
In order to which those skilled in the art are better understood from the utility model, below in conjunction with the accompanying drawings with following embodiment to this
Utility model is described in further detail.
Embodiment 1
As shown in Figure 1, the present embodiment provides a kind of railway elastic bar fatigue experimental device, including pedestal 3, pressure head 2, mould 1
With spring 4, at least two support columns 5 are further included, support column 5 described in two of which is fixedly connected on pedestal 3, and the spring 4 is set
In on the support column 5,1 bottom of mould is provided with groove, and the mould 1 connects on the base 3, the both ends of the spring 4
The groove and the pressure head 2 are pressed on respectively.Mould 1 is designed as channel-shaped, during the experiment 1 grooved position spring of mould
4 hallux end movements are restricted, toe-end before lateral displacement and friction transfer to spring 4, and the abrasion of toe-end will not be right before spring 4
Its fatigue behaviour impacts, and does so tired source caused by can eliminating fretting wear, accurately reflects the fatigability of spring 4
Energy.
Embodiment 2
As shown in Figure 1, the present embodiment is further improved on the basis of embodiment 1, specially described pedestal 3 includes
U-shaped section 31, rail segment 32 and montant section 33, described 32 one end of rail segment are fixedly connected with U-shaped section of 31 one end, the rail segment 32
The other end is fixedly connected with 33 end of montant section, and the mould 1 is formed set on pedestal 3U types section 31, rail segment 32 and montant section 33
Cavity in.Doing so can utilize rail segment 32 and montant section 33 to bear the power that mould 1 is subject to, and protect mould 1.
Embodiment 3
As shown in Figure 1, the present embodiment is further improved on the basis of embodiment 2, specially described mould 1 and bottom
3 rail segments 32 of seat are connected by bolt 6.It does so and is convenient for changing various sizes of mould 1, meet the tired of different model spring 4
Labor is tested.
Embodiment 4
As shown in Figure 1, the present embodiment is further improved on the basis of embodiment 3, specially described 2 bottom of pressure head
For plane, this is done to facilitate toe-end before the lateral displacement for generating rear toe-end and friction transfer to spring 4.
Embodiment 5
As shown in Figure 1, the present embodiment is further improved on the basis of embodiment 4, specially described mould 1 and institute
4 contact position of spring bonding abrasive rubber layer is stated, this is done to prevent the generation in tired source, excludes fine motion during experiment
Wear the influence to 4 fatigue behaviour of spring.
The preferred embodiment of the above, only the utility model, is not intended to limit the utility model, the utility model
Scope of patent protection be subject to claims, what every specification and accompanying drawing content with the utility model was made is equal
Structure change similarly should be included in the scope of protection of the utility model.
Claims (5)
1. a kind of railway elastic bar fatigue experimental device, including pedestal (3), pressure head (2), mould (1) and spring (4), feature exists
In：At least two support columns (5) are further included, support column (5) described in two of which is fixedly connected on pedestal (3), the spring (4)
On the support column (5), mould (1) bottom is provided with groove, and the mould (1) is connected on pedestal (3), the bullet
The both ends of item (4) press on the groove and the pressure head (2) respectively.
2. railway elastic bar fatigue experimental device according to claim 1, it is characterised in that：The pedestal (3) includes U-shaped section
(31), rail segment (32) and montant section (33), described rail segment (32) one end are fixedly connected with U-shaped section of (31) one end, the horizontal stroke
Rod segment (32) other end is fixedly connected with montant section (33) end, and the mould (1) is set on pedestal (3) U-shaped section of (31), rail segment
(32) and in the cavity of montant section (33) formation.
3. railway elastic bar fatigue experimental device according to claim 2, it is characterised in that：The mould (1) and pedestal (3)
Rail segment (32) is connected by bolt (6).
4. railway elastic bar fatigue experimental device according to claim 1, it is characterised in that：Pressure head (2) bottom is flat
Face.
5. according to claim 1-4 any one of them railway elastic bar fatigue experimental devices, it is characterised in that：The mould (1)
Abrasive rubber layer Nian Jie with the spring (4) contact position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721849011.2U CN207556837U (en) | 2017-12-26 | 2017-12-26 | A kind of railway elastic bar fatigue experimental device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721849011.2U CN207556837U (en) | 2017-12-26 | 2017-12-26 | A kind of railway elastic bar fatigue experimental device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207556837U true CN207556837U (en) | 2018-06-29 |
Family
ID=62660384
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721849011.2U Active CN207556837U (en) | 2017-12-26 | 2017-12-26 | A kind of railway elastic bar fatigue experimental device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109799150A (en) * | 2019-02-19 | 2019-05-24 | 北京建筑大学 | Railway I type spring high-cycle fatigue test method |
| CN109799135A (en) * | 2019-02-19 | 2019-05-24 | 北京建筑大学 | Railway I type spring high-cycle fatigue test fixture and system |
| 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 |
| CN110672442A (en) * | 2019-10-22 | 2020-01-10 | 成都西交轨道交通技术服务有限公司 | Elastic strip fatigue test device and monitoring system |
| CN110823555A (en) * | 2020-01-10 | 2020-02-21 | 北京铁科首钢轨道技术股份有限公司 | Elastic part fatigue test tool |
| CN112213091A (en) * | 2020-09-30 | 2021-01-12 | 华东交通大学 | Railway spring strip fastener detection platform |
| RU2747792C2 (en) * | 2018-12-29 | 2021-05-14 | Реилвей Энджиниринг Рисерч Инститьют, Чайна Акэдеми Оф Реилвей Сайенсис Корпорейшн Лимитед | High frequency fatigue dynamic load test machine for rail fixing spring bars |
-
2017
- 2017-12-26 CN CN201721849011.2U patent/CN207556837U/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2747792C2 (en) * | 2018-12-29 | 2021-05-14 | Реилвей Энджиниринг Рисерч Инститьют, Чайна Акэдеми Оф Реилвей Сайенсис Корпорейшн Лимитед | High frequency fatigue dynamic load test machine for rail fixing spring bars |
| CN109799150A (en) * | 2019-02-19 | 2019-05-24 | 北京建筑大学 | Railway I type spring high-cycle fatigue test method |
| CN109799135A (en) * | 2019-02-19 | 2019-05-24 | 北京建筑大学 | Railway I type spring high-cycle fatigue test fixture and system |
| CN109799150B (en) * | 2019-02-19 | 2021-04-20 | 北京建筑大学 | Railway I-type elastic strip high-frequency fatigue testing method |
| CN109799135B (en) * | 2019-02-19 | 2021-11-23 | 北京建筑大学 | Railway I-type elastic strip high-frequency fatigue test fixture and system |
| 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 |
| CN110672442A (en) * | 2019-10-22 | 2020-01-10 | 成都西交轨道交通技术服务有限公司 | Elastic strip fatigue test device and monitoring system |
| CN110672442B (en) * | 2019-10-22 | 2020-08-11 | 成都西交轨道交通技术服务有限公司 | Elastic strip fatigue test device and monitoring system |
| CN110823555A (en) * | 2020-01-10 | 2020-02-21 | 北京铁科首钢轨道技术股份有限公司 | Elastic part fatigue test tool |
| CN112213091A (en) * | 2020-09-30 | 2021-01-12 | 华东交通大学 | Railway spring strip fastener detection platform |
| CN112213091B (en) * | 2020-09-30 | 2022-07-01 | 华东交通大学 | Railway spring strip fastener detection platform |
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