CN204422125U - A kind of gapless rail stress measurement device - Google Patents
A kind of gapless rail stress measurement device Download PDFInfo
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- CN204422125U CN204422125U CN201520068833.1U CN201520068833U CN204422125U CN 204422125 U CN204422125 U CN 204422125U CN 201520068833 U CN201520068833 U CN 201520068833U CN 204422125 U CN204422125 U CN 204422125U
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Abstract
The utility model relates to a kind of gapless rail stress measurement device.Its objective is that a kind of structure is simple, production cost is low in order to provide, measure rail stress measurement mechanism accurately.The utility model comprises displacement transducer, displacement sensor bracket, pressure transducer, pressure transducer support, leading screw and handwheel.Rail both sides are installed with displacement sensor bracket and pressure transducer support respectively, offer through hole in pressure transducer mid-stent, and one end of leading screw extend in through hole, and the other end is positioned at through hole outside and is connected with handwheel.Between displacement transducer mid-stent and the homonymy sidewall of rail, be folded with displacement transducer, the contact jaw of displacement transducer both sides respectively with displacement sensor bracket and rail sidewall contact.Between pressure transducer mid-stent and the homonymy sidewall of rail, be provided with pressure transducer, the contact jaw of pressure transducer both sides respectively with pressure transducer support and rail sidewall contact.
Description
Technical field
The utility model relates to a kind of stress detection device, particularly relates to a kind of gapless rail stress measurement device.
Background technology
Present stage, gapless track technology is widely used in stock rail field, this gapless track has that joint is few, driving steadily, the advantage such as low, the extension wire of maintenance cost and vehicle service life.But the actual lock rail temperature of gapless track, always what constantly change, if can accurately not test the temperature stress of gapless track, thus is failed to carry out diffusing of temperature stress in time, is likely caused the generation of great driving accident.Therefore, the fastening-down temperature of rail testing gapless track is accurately the pacing items running, make good use of gapless track well.The detection method of current gapless track temperature stress mainly contains three kinds:
1, Strain Method.A foil gauge is sticked on the neutral axis of tested steel rail web, on the make-up rail that another foil gauge is sticked aside, balance bridge road is formed between two foil gauges, when track can be broken by balance bridge road equilibrium state during temperature stress effect, export faint electric signal by foil gauge, thus obtain the strain value of rail.Strain Method is more conventional at present, is also one of method of more ripe measurement thing force-bearing situation, during due to gapless line middle part temperature variation, the bending of trace just occurs, and therefore, uses strain method for measuring effect bad;
2, vibratory string method.The neutral axis of tested steel rail web offers aperture, vibrating wire sensor is installed in aperture, small change can be there is in the shape of rail aperture when receiving temperature stress, thus the natural frequency of vibration of vibrating wire sensor is changed, the strain value of tested rail just can be obtained by the difference on the frequency measuring the vibrating wire sensor both sides string of a musical instrument.But this method also cannot obtain testing result accurately because rail variable quantity is too small;
3, stake method is observed.Burying observation stake underground in the both sides of tested rail, by measuring the change of relative position between groove and observation stake on rail, thus calculating temperature stress suffered by tested rail.This method cost is low, application is comparatively extensive, but error is too large, cannot obtain testing result accurately.
Utility model content
The technical problems to be solved in the utility model is to provide that a kind of structure is simple, production cost is low, measure gapless rail stress measurement device accurately.
A kind of gapless rail stress measurement device of the utility model, wherein, comprise displacement transducer, displacement sensor bracket, pressure transducer and pressure transducer support, in tested rail both sides, railway spike position is installed and is installed with displacement sensor bracket and pressure transducer support respectively, between displacement sensor bracket and the homonymy sidewall of rail, be folded with displacement transducer, between pressure transducer support and the homonymy sidewall of rail, be folded with pressure transducer.
A kind of gapless rail stress measurement device of the utility model, wherein said gapless rail stress measurement device also comprises leading screw and handwheel, the medium position of pressure transducer support offers through hole, the inwall of through hole is provided with the first screw thread, one end of leading screw extend in through hole, the other end is positioned at through hole outside and is connected with handwheel, leading screw outer wall is provided with the second screw thread matched with the first screw thread.
A kind of gapless rail stress measurement device of the utility model, wherein said displacement transducer is folded in displacement sensor bracket medium position, the contact jaw of displacement transducer both sides respectively with displacement sensor bracket and rail sidewall contact.
A kind of gapless rail stress measurement device of the utility model, wherein said pressure transducer is arranged on pressure transducer mid-stent position, the contact jaw of pressure transducer both sides respectively with pressure transducer support and rail sidewall contact.
A kind of gapless rail stress measurement device of the utility model, wherein said displacement transducer and pressure transducer are separately positioned on the both sides of rail same position.
A kind of gapless rail stress measurement device of the utility model difference from prior art is: the utility model structure is simple, production cost is low, measurement is accurate.Rail two side positions respectively correspondence be provided with pressure transducer and displacement transducer, and to be fixed by pressure transducer support and displacement sensor bracket.By pressure transducer, pressure is applied to rail, and detect force value; The shift value of track under applied pressure is detected by displacement transducer.By force value and shift value computable go out temperature stress suffered by rail.Accuracy of measurement is high, measurement effect good, and installing/dismounting is very convenient.
Below in conjunction with accompanying drawing, a kind of gapless rail stress measurement device of the utility model is described further.
Accompanying drawing explanation
Fig. 1 is the vertical view of a kind of gapless rail stress measurement device of the utility model.
Embodiment
As shown in Figure 1, be the vertical view of a kind of gapless rail stress measurement device of the utility model, comprise displacement transducer 1, displacement sensor bracket 3, pressure transducer 2, pressure transducer support 4, leading screw 5 and handwheel 6.In tested rail both sides, railway spike position 7 is installed and is installed with displacement sensor bracket 3 and pressure transducer support 4 respectively, through hole is offered at pressure transducer support 4 medium position, the inwall of through hole is provided with the first screw thread, be provided with leading screw 5 in through-holes, the second screw thread on leading screw 5 outer wall is connected with the first threaded engagement, one end of leading screw 5 extend in through hole, and the other end is positioned at through hole outside and is connected with handwheel 6.Displacement transducer 1 and pressure transducer 2 is respectively arranged with in the both sides of rail same position, displacement transducer 1 is folded between the homonymy sidewall of displacement sensor bracket 3 medium position and rail, the contact jaw of displacement transducer 1 both sides respectively with displacement sensor bracket 3 and rail sidewall contact.Pressure transducer 2 is arranged between the homonymy sidewall of pressure transducer support 4 medium position and rail, the contact jaw of pressure transducer 2 both sides respectively with pressure transducer support 4 and rail sidewall contact.
The course of work of the present utility model is: on detected rail, choose one section of rail, shed the railway spike of rail both sides, installation railway spike position 7 fixedly mounts displacement sensor bracket 3 and pressure transducer support 4, and between rail and displacement sensor bracket 3 installation position displacement sensor 1, setting pressure sensor 2 between rail and pressure transducer support 4.Manual rotation handwheel 6, make leading screw 5 in through-holes to rail one lateral movement and compaction pressure sensor 2, in leading screw 5 pairs of rail pressure processes, pressure transducer 2 detects institute's applied pressure, institute's applied pressure value is externally exported.Longitudinally can there is certain displacement in rail under the effect of the pressure, and the length travel of displacement transducer 1 pair of rail detects, and is externally exported by shift value.Calculate the longitudinal stress of rail finally by the length travel value applying force value and rail, and calculate the temperature stress of rail by " bending with combined axial and lateral load is theoretical ".(" bending with combined axial and lateral load is theoretical " is documented in " mechanics of materials " (the 4th edition) Liu Hongwen/chief editor Higher Education Publishing House chapter 9, Section 7.)
A kind of gapless rail stress measurement device of the utility model, rail two side positions respectively correspondence be provided with pressure transducer 2 and displacement transducer 1, and to be fixed by pressure transducer support 4 and displacement sensor bracket 3.Apply pressure by pressure transducer 2 pairs of rail, and detect force value; The shift value of track under applied pressure is detected by displacement transducer 1.By force value and shift value computable go out temperature stress suffered by rail.Accuracy of measurement is high, measurement effect good, and installing/dismounting is very convenient.The utility model structure is simple, production cost is low, measurement is accurate, compared with prior art has obvious advantage.
Above-described embodiment is only be described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection domain that the utility model claims determine.
Claims (5)
1. a gapless rail stress measurement device, it is characterized in that: comprise displacement transducer (1), displacement sensor bracket (3), pressure transducer (2) and pressure transducer support (4), in tested rail both sides, railway spike position (7) is installed and is installed with displacement sensor bracket (3) and pressure transducer support (4) respectively, displacement transducer (1) is folded with between displacement sensor bracket (3) and the homonymy sidewall of rail, pressure transducer (2) is folded with between pressure transducer support (4) and the homonymy sidewall of rail.
2. a kind of gapless rail stress measurement device according to claim 1, it is characterized in that: described gapless rail stress measurement device also comprises leading screw (5) and handwheel (6), the medium position of pressure transducer support (4) offers through hole, the inwall of through hole is provided with the first screw thread, one end of leading screw (5) extend in through hole, the other end is positioned at through hole outside and is connected with handwheel (6), leading screw (5) outer wall is provided with the second screw thread matched with the first screw thread.
3. a kind of gapless rail stress measurement device according to claim 1, it is characterized in that: institute's displacement sensors (1) is folded in displacement sensor bracket (3) medium position, the contact jaw of displacement transducer (1) both sides respectively with displacement sensor bracket (3) and rail sidewall contact.
4. a kind of gapless rail stress measurement device according to claim 1, it is characterized in that: described pressure transducer (2) is arranged on pressure transducer support (4) medium position, the contact jaw of pressure transducer (2) both sides respectively with pressure transducer support (4) and rail sidewall contact.
5. a kind of gapless rail stress measurement device according to claim 1, is characterized in that: institute's displacement sensors (1) and pressure transducer (2) are separately positioned on the both sides of rail same position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520068833.1U CN204422125U (en) | 2015-01-30 | 2015-01-30 | A kind of gapless rail stress measurement device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520068833.1U CN204422125U (en) | 2015-01-30 | 2015-01-30 | A kind of gapless rail stress measurement device |
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| CN204422125U true CN204422125U (en) | 2015-06-24 |
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| CN201520068833.1U Active CN204422125U (en) | 2015-01-30 | 2015-01-30 | A kind of gapless rail stress measurement device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706192A (en) * | 2016-12-19 | 2017-05-24 | 哈尔滨威克科技有限公司 | Rail bottom bending moment type force transducer |
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2015
- 2015-01-30 CN CN201520068833.1U patent/CN204422125U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706192A (en) * | 2016-12-19 | 2017-05-24 | 哈尔滨威克科技有限公司 | Rail bottom bending moment type force transducer |
| CN106706192B (en) * | 2016-12-19 | 2020-01-21 | 哈尔滨铁路科研所科技有限公司 | Rail bottom bending moment type force sensor |
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