CN209247553U - A kind of high-speed railway touching net dropper bending fretting fatigue testing device - Google Patents
A kind of high-speed railway touching net dropper bending fretting fatigue testing device Download PDFInfo
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- CN209247553U CN209247553U CN201822080425.4U CN201822080425U CN209247553U CN 209247553 U CN209247553 U CN 209247553U CN 201822080425 U CN201822080425 U CN 201822080425U CN 209247553 U CN209247553 U CN 209247553U
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- dropper
- force compensating
- force
- testing device
- bolt
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Abstract
The utility model discloses a kind of high-speed railway touching net dropper bending fretting fatigue testing device, including dropper fixing end, force compensating end, fatigue load loaded part and data acquisition process unit.Dropper sample one end is fixed on fixing end support, and the other end is fixed on the support of force compensating end, applies pretightning force to dropper by force compensating spring, dropper middle section is connected by load bar with fatigue tester.During entire test, the pressure of fixing end and the pretightning force of dropper are set, the dropper that variable element, multi-state are carried out by control fatigue tester is bent fretting test.
Description
Technical field
The utility model relates to railway Pantograph-OCS system dropper testing fatigue technical fields, more particularly to a kind of high-speed railway
Contact Net's Suspension Chord is bent fretting fatigue testing device.
Background technique
Fretting fatigue refers between the contact surfaces of two contact workpieces in mechanical oscillation, fatigue load, electric and magnetic oscillation or thermal cycle
Etc. under various alternate load effects, the minimum relative motion of the amplitude of generation is concentrated so as to cause higher stress and is worn
Fatigue behaviour.It is widely present in the neck such as aerospace, automobile, machinery, railway, electric power, nuclear reactor, bridge, biomedicine
It is the main reason for many key components and parts fail in the immovable fitting component in domain.
Nearly ten years, with the fast development of economy and society, China Railway High-speed has obtained great-leap-forward development, and drives
World's high-speed rail upsurge in construction of a new round.By the end of the year 2017, China Railway High-speed operating mileage alreadys exceed 2.5 ten thousand public affairs
In, 60% or more of world's high-speed rail total kilometrage is accounted for, high-speed railway has become the glittering business card of Chinese innovation and development.From Chinese iron
Since the raising speed by a large scale of road the 6th time, large quantities of speed per hours are 200km/h and the train of higher speed grade puts into effect, are people group
Many trips provide a great convenience.
With the fast development of high-speed railway, the fracture failure of dropper is outstanding day by day, once dropper fracture failure, cleavage
The contact line set just will appear the phenomenon that collapses, and influence pantograph current carrying quality, directly results in train operation failure, influences people
The security of the lives and property of the people masses.According to military wide company feedback, since operation 7 years, hundred kilometers of droppers are broken tens.According to other lines
Road feedback, dropper occurs that breakage problem is extremely more with respect to for other components, but inspection point all proves the experimental study of dropper
It is qualified.It was initially believed that caused by the main reason for causing this phenomenon is fatigue damage and fretting wear.Disclose dropper
Fracture failure mechanism can provide certain theoretical ginseng for design, construction, operation and the maintenance of high speed contact net dropper from now on
It examines, finally effectively extends the service life of dropper.Determine currently, there is no exclusively for dropper bending fretting fatigue testing amount body
The testing equipment of system.
Utility model content
The purpose of the utility model is to provide a kind of high-speed railway touching net droppers to be bent fretting fatigue testing device, with solution
Certainly the above-mentioned problems of the prior art, the experimental rig it is simple to operation, it can be achieved that various working, plurality of specifications dropper it is curved
Bent fretting fatigue testing, measurement and control precision are high, and data are more reliable.
To achieve the above object, the utility model provides following scheme: the utility model provides a kind of high-speed railway and connects
Net-fault dropper be bent fretting fatigue testing device, including be fixed on testing stand table top fixing end support, force compensating end, load
Bar and control system；
Supporing shell is provided on the fixing end support, the fixed link of the supporing shell side passes through bolt for dropper
One end tentatively connected and fixed, the fixing end support includes upper crimp head and lower crimp head, it is preliminary it is fixed after
It is compressed across the upper crimp head and lower crimp head at the clamper tube of the dropper；
The other end of the dropper is adjustable end, and the adjustable end is connected with the force compensating end, on the force compensating end
One U-bolt is set, it can come realize the dropper by the connecting pin of the other end and the U-bolt that change the dropper
It adjusts；The force compensating end is for adjusting the power being applied on the dropper；
The upper end of the load bar is connected with fatigue test machine grip holder, lower end fixed by bolt and the dropper and incite somebody to action
The signals such as the test force and test frequency of the fatigue tester are transmitted on the dropper；
The fixing end support, force compensating end and load bar are electrically connected with the control system.
Preferably, one end of the fixed link on the outside of fastening nut one and the supporing shell by being fixedly connected, institute
State the other end that fixed link is connect with the dropper wear in the supporing shell；And felt pad is cased in the fixed link.
Preferably, reinforcing bolt is provided at the top of the fixing end support, the reinforcing bolt is used for the upper pressure
Joint applies restraining force.
Preferably, it is provided with first pressure sensor between the bottom end and the upper crimp head of the reinforcing bolt, it is described
First pressure sensor is connect with the control system signal.
Preferably, the force compensating end includes the force compensating support, force compensating bar and force compensating bullet being fixed on erecting bed
Spring；The adjustable end of the dropper is connected by positioning bolt with the force compensating bar, and the force compensating bar can be in the force compensating
It horizontally slips on support, the other end of the force compensating bar passes through the force compensating support rear enclosure and is equipped with the force compensating spring；
The outside of the force compensating spring is fixed by fastening nut two.
Preferably, it is located on the force compensating bar inside and outside the force compensating spring and is respectively arranged with spring washer one
With spring washer two, the spring washer two is disposed adjacent with the fastening nut two.
Preferably, second is provided between the spring washer one and the force compensating support on the force compensating bar
Pressure sensor, the second pressure sensor are connect with the control system signal.
Preferably, the U-bolt is set to the outside of the positioning bolt.
The utility model achieves following technical effect compared with the existing technology:
High-speed railway touching net dropper in the utility model is bent fretting fatigue testing device, can be right by the device
Dropper fracture damage mechanism study is supplemented, and carries out fatigue loading using electo hydraulic servocontrolled fatigue testing machine, ensure that test essence
The reliability of degree and test data, in the tooling of design, it is contemplated that dropper current-carrying devises insulating unit, it can be achieved that carrying
Dropper test is flowed, more accurately simulates the actual condition of dropper, current control accuracy is high, and stability is good, overcomes test bar
Part is single, the accurate not high defect of data.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is the overall structure diagram that the dropper is bent fretting fatigue testing device；
Wherein, 1 testing stand；2 fixing end supports；3 fixed links；4 fastening nuts one；5 supporing shells；6 felt pads；7 bolts；
8 first pressure sensors；9 reinforcing bolts；Crimp head on 10；11 clamper tubes；12 lower crimp heads；13 droppers；14 load bars；15 U
Type bolt；16 positioning bolts；17 force compensating bars；18 force compensating supports；19 second pressure sensors；20 spring washers one；21 power
Counterbalance spring；22 spring washers two；23 fastening nuts two；24 erecting beds.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The purpose of the utility model is to provide a kind of high-speed railway touching net droppers to be bent fretting fatigue testing device, with solution
Certainly the above-mentioned problems of the prior art, the experimental rig it is simple to operation, it can be achieved that various working, plurality of specifications dropper it is curved
Bent fretting fatigue testing, measurement and control precision are high, and data are more reliable.
Based on this, high-speed railway touching net dropper provided by the utility model is bent fretting fatigue testing device, including solid
Due to fixing end support, force compensating end, load bar and the control system on testing stand table top；Support is provided on fixing end support
One end of dropper is tentatively connected and is fixed by bolt by the fixed link of shell, supporing shell side, fixing end support packet
Included crimp head and lower crimp head, it is preliminary fixed after dropper clamper tube at across upper crimp head and lower crimp head into
Row compresses；The other end of dropper is adjustable end, and the adjustable end is connected with force compensating end, and a U-bolt is arranged on force compensating end,
The adjustable of dropper is realized by the connecting pin of the other end and U-bolt that change dropper；Force compensating end is applied to for adjusting
Power on dropper；The upper end of load bar is connected with fatigue test machine grip holder, and lower end is fixed with dropper by bolt and will be tired
The signals such as the test force and test frequency of testing machine are transmitted on dropper；Fixing end support, force compensating end and load bar with control
System processed electrically connects.
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing and have
Body embodiment is described in further detail the utility model.
Referring to FIG. 1, wherein, Fig. 1 is the overall structure diagram that the dropper is bent fretting fatigue testing device.
As shown in Figure 1, the utility model provides a kind of high-speed railway touching net dropper bending fretting fatigue testing device, Gu
Fixed end support 2 is fixed on the table top of testing stand 1, is bolted on together with supporing shell 5, and fixed link 3 passes through bolt 7
One end of dropper 13 is tentatively connected and fixed using fastening nut 1, at the clamper tube 11 of dropper 13, passes through upper crimping
First 10 and lower crimp head 12 be fixed on fixing end support 2.Reinforcing bolt 9 applies in test restraining force, passes through first
Pressure sensor 8 transfers force at the clamper tube 11 of test dropper 13, provides normal load.Insulation is cased in fixed link 3
Pad 6, it is convenient to play insulating effect in current-carrying test.The other end of dropper 13 is adjustable end, is connected with force compensating end, utilizes U
Adjustable function may be implemented in type bolt 15.
The concrete composition at force compensating end is: the adjustable end of dropper 13 is connected by positioning bolt 16 with force compensating bar 17, power
Compensation bar 17 can horizontally slip on the force compensating end support 18 being fixed on erecting bed 24, and 17 one end of force compensating bar passes through fastening
Nut 2 23 is fixed, under the action of force compensating spring 21, provides 13 initial pretightening force of dropper and plays the role of force compensating, the
Two pressure sensors 19 are used to the pretightning force size of real-time monitoring test dropper 13, and force compensating spring 21 passes through spring washer 1
It is positioned and is protected with spring washer 2 22.
14 upper end of load bar is connected with fatigue test machine grip holder, and lower end is fixed by bolt and dropper 13, during test,
The signals such as test force and test frequency are transmitted in dropper pilot system by load bar 14 by fatigue tester, thus into
Row test.
First pressure sensor 8 and second pressure sensor 19 are electrically connected with data acquisition and control system, can be carried out
Real-time monitoring.
The power that reinforcing bolt 9 is applied to crimp head 10 in the present embodiment passes through first pressure sensor 8, and data are real-time
Feed back to acquisition system；The pretightning force that force compensating spring 21 is applied to dropper 13 can will be counted by second pressure sensor 19
Acquisition system is fed back to when factually.It can be by the data of two force snesors of display real-time monitoring, to improve in test
Test efficiency.
The operating process of dropper bending fretting fatigue testing device is:
13 one end of dropper tested will be needed to be installed on fixing end support 2 by reinforcing bolt 9, the other end is installed to power
Compensate support 18 on, by force compensating spring 21 to dropper 13 apply pretightning force, 13 middle section of dropper by load bar 14 with
Fatigue tester is connected.During entire test, the pressure of fixing end and the pretightning force of dropper 13 are set, passes through control fatigue
Testing machine is tested to carry out the dropper of variable element, multi-state.
Specific case is applied in the utility model to be expounded the principles of the present invention and embodiment, it is above
The explanation of embodiment is merely used to help understand the method and its core concept of the utility model；Meanwhile for the one of this field
As technical staff, based on the idea of the present invention, there will be changes in the specific implementation manner and application range.To sum up
Described, the content of the present specification should not be construed as a limitation of the present invention.
Claims (8)
1. a kind of high-speed railway touching net dropper is bent fretting fatigue testing device, it is characterised in that: including being fixed on testing stand
Fixing end support, force compensating end, load bar and control system on table top；
Supporing shell is provided on the fixing end support, the fixed link of the supporing shell side passes through bolt for the one of dropper
End is tentatively connected and is fixed, and the fixing end support includes upper crimp head and lower crimp head, described after preliminary fixation
It is compressed across the upper crimp head and lower crimp head at the clamper tube of dropper；
The other end of the dropper is adjustable end, and the adjustable end is connected with the force compensating end, is arranged on the force compensating end
One U-bolt realizes the adjustable of the dropper by changing the connecting pin of the other end of the dropper and the U-bolt；
The force compensating end is for adjusting the power being applied on the dropper；
The upper end of the load bar is connected with fatigue test machine grip holder, and lower end is fixed by bolt and the dropper and will be described
The signals such as the test force and test frequency of fatigue tester are transmitted on the dropper；
The fixing end support, force compensating end and load bar are electrically connected with the control system.
2. high-speed railway touching net dropper according to claim 1 is bent fretting fatigue testing device, it is characterised in that: institute
The one end for stating fixed link passes through to be fixedly connected on the outside of fastening nut one and the supporing shell, the fixed link and the dropper
The other end of connection wear in the supporing shell；And felt pad is cased in the fixed link.
3. high-speed railway touching net dropper according to claim 1 is bent fretting fatigue testing device, it is characterised in that: institute
It states and is provided with reinforcing bolt at the top of fixing end support, the reinforcing bolt is used to apply restraining force at the upper crimp head.
4. high-speed railway touching net dropper according to claim 3 is bent fretting fatigue testing device, it is characterised in that: institute
It states and is provided with first pressure sensor, the first pressure sensor and institute between the bottom end and the upper crimp head of reinforcing bolt
State the connection of control system signal.
5. high-speed railway touching net dropper according to claim 1 is bent fretting fatigue testing device, it is characterised in that: institute
Stating force compensating end includes the force compensating support, force compensating bar and force compensating spring being fixed on erecting bed；The dropper it is adjustable
End is connected by positioning bolt with the force compensating bar, and the force compensating bar can horizontally slip on the force compensating support, institute
The other end for stating force compensating bar passes through the force compensating support rear enclosure and is equipped with the force compensating spring；Outside the force compensating spring
Side is fixed by fastening nut two.
6. high-speed railway touching net dropper according to claim 5 is bent fretting fatigue testing device, it is characterised in that: institute
It states to be located on force compensating bar inside and outside the force compensating spring and is respectively arranged with spring washer one and spring washer two, it is described
Spring washer two is disposed adjacent with the fastening nut two.
7. high-speed railway touching net dropper according to claim 6 is bent fretting fatigue testing device, it is characterised in that: institute
It states and is provided with second pressure sensor on force compensating bar between the spring washer one and the force compensating support, described
Two pressure sensors are connect with the control system signal.
8. high-speed railway touching net dropper according to claim 5 is bent fretting fatigue testing device, it is characterised in that: institute
State the outside that U-bolt is set to the positioning bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822080425.4U CN209247553U (en) | 2018-12-11 | 2018-12-11 | A kind of high-speed railway touching net dropper bending fretting fatigue testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822080425.4U CN209247553U (en) | 2018-12-11 | 2018-12-11 | A kind of high-speed railway touching net dropper bending fretting fatigue testing device |
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| Publication Number | Publication Date |
|---|---|
| CN209247553U true CN209247553U (en) | 2019-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822080425.4U Active CN209247553U (en) | 2018-12-11 | 2018-12-11 | A kind of high-speed railway touching net dropper bending fretting fatigue testing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109357958A (en) * | 2018-12-11 | 2019-02-19 | 西南交通大学 | A kind of high-speed railway touching net dropper bending fretting fatigue testing device |
| CN113970430A (en) * | 2021-10-22 | 2022-01-25 | 中国铁道科学研究院集团有限公司标准计量研究所 | Fatigue test system for multichannel contact net compensation device |
-
2018
- 2018-12-11 CN CN201822080425.4U patent/CN209247553U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109357958A (en) * | 2018-12-11 | 2019-02-19 | 西南交通大学 | A kind of high-speed railway touching net dropper bending fretting fatigue testing device |
| CN113970430A (en) * | 2021-10-22 | 2022-01-25 | 中国铁道科学研究院集团有限公司标准计量研究所 | Fatigue test system for multichannel contact net compensation device |
| CN113970430B (en) * | 2021-10-22 | 2022-09-06 | 中国铁道科学研究院集团有限公司标准计量研究所 | Fatigue test system for multichannel contact net compensation device |
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