CN104251756A - Wheel-rail force integrating test sensor and rail fastener - Google Patents
Wheel-rail force integrating test sensor and rail fastener Download PDFInfo
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- CN104251756A CN104251756A CN201410523230.6A CN201410523230A CN104251756A CN 104251756 A CN104251756 A CN 104251756A CN 201410523230 A CN201410523230 A CN 201410523230A CN 104251756 A CN104251756 A CN 104251756A
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Abstract
The invention discloses a wheel-rail force integrating test sensor, which relates to the technical field of monitoring on rail and train operation state and is applied to the safety monitoring process of rail and training operation. The wheel-rail force integrating test sensor comprises a large pad plate, an elastic strip fixing beam, a vertical force sensor and a transverse force sensor, wherein the middle part of the large pad plate is a support part, assembling lug bosses are arranged at the two sides of the large pad plate and are connected with the elastic strip fixing beam, the vertical force sensor is fixedly arranged in the support part, and the transverse force sensor is fixedly arranged in the elastic strip fixing beam. Therefore, the problems of low precision and poor adaptability in the existing wheel rail force test process can be solved. Therefore, the wheel-rail force integrating test sensor has the advantages that the test precision is high, the stability is good, the installation is simple and convenient, the installation method is the same as that of the existing fastener, no influence is caused on the consistency of the rail structure, and the like.
Description
Technical field
The present invention relates to the technical field of track and train operation state monitoring, be applied in the safety monitoring process of track and train operation, particularly relate to wheel rail force integration testing sensor and rail clip.
Background technology
Along with the development of high-speed rail technology, corresponding ballastless track structure have also been obtained popularization progressively in field of track traffic.For effectively monitoring track condition and the running status of train in high-speed railway, be necessary to carry out accurate measurements to vehicle-interorbital wheel rail force.But because rail foot surface is narrow to the clear space on fragment-free track slab surface, therefore cannot effectively measure.For the problems referred to above, in prior art, generally adopt the mode of rubber dynamometry backing plate to detect vertical wheel rail force, but rubber dynamometry backing plate is when implementing, need to replace rubber tie plate under rail, thus change fastener connection stiffness, therefore, be unfavorable for the kilter keeping track structure; In addition, because it adopts rubber as main support material, thus Reusability repeatedly cannot be carried out, and reduce the precision in testing process.It can thus be appreciated that existing rubber dynamometry backing plate, construction cost is high, accuracy of detection is low, serviceable life is short, therefore, cannot meet the monitoring of track and the needs of train operation state long term monitoring.
Summary of the invention
For above-mentioned defect of the prior art, the invention solves in existing wheel rail force test process, the problem that precision is low and poor for applicability.
The invention provides wheel rail force integration testing sensor, comprise, switch base plate, spring fixed beam, vertical force sensor and transverse force sensor; Be support portion in the middle part of described switch base plate, both sides comprise mounting boss, and this mounting boss is connected with described spring fixed beam; Described vertical force sensor is fixed in described support portion; Described transverse force sensor is fixed in described spring fixed beam.
In a preferred embodiment, described mounting boss is square mounting boss, on the assembling mating surface of described spring fixed beam and described mounting boss, offer the groove corresponding to described square mounting boss, described mounting boss is connected with described spring fixed beam.
In a preferred embodiment, the height of described mounting boss is: 5mm ~ 20mm.
In a preferred embodiment, also comprise, square taper liner plate, described square taper liner plate is fixedly connected with described support portion; The angle of inclination of described square taper liner plate is the gradient of 1:40.
In a preferred embodiment, described vertical force sensor is vertical force strain-ga(u)ge transducer; Uniform multiple spoke annular groove in the support portion of described switch base plate; Radial direction along described spoke annular groove arranges multiple spoke arm, and described multiple vertical force strain-ga(u)ge transducer is fixedly connected with described spoke arm.
In a preferred embodiment, fill elastic sealant between the bottom surface of described square taper liner plate and the top of described support portion, make the assemblage gap between the bottom surface of described square taper liner plate and the top of described support portion be the assemblage gap of 0.1 ~ 0.5mm or 1 ~ 2mm; Be provided with the assemblage gap of 0.1 ~ 0.5mm or 1 ~ 2mm between the two sides of described square taper liner plate and described spring fixed beam, in the region in this gap, fill elastic sealant.
In a preferred embodiment, spring pickup groove is offered on described spring fixed beam top, and described spring pickup groove width is corresponding to the spring width of spring to be assembled, is provided with fixing lug boss outside the end face of described spring fixed beam.
In a preferred embodiment, the lateral angle of described spring fixed beam is arc angling or straight line chamfering.
In a preferred embodiment, described transverse force sensor is transverse force strain-ga(u)ge transducer; Transverse force sensor dynamometry hole transversely offered by described spring fixed beam, and multiple described transverse force strain-ga(u)ge transducer adopts tension and compression stress method to be that 0 ° and 90 ° of both directions are arranged in described sensor dynamometry.
Meanwhile, in one embodiment of the present invention, additionally provide rail clip, comprise the wheel rail force integration test sensor in above-mentioned any one embodiment.
Beneficial effect of the present invention is: wheel rail force integration testing sensor of the present invention, is characterized in wheel track vertical force and the wheel-rail lateral force that can measure non-fragment orbit WJ-7 type fastener node location simultaneously, overcomes the difficulty that cannot measure at present; Wheel rail force integration testing sensor of the present invention has that measuring accuracy is high, good stability, simple installation, with existing fastener install consistent, to advantages such as the consistance of track structure have no effect.
Accompanying drawing explanation
Fig. 1 is in one embodiment of the present invention, the front view of wheel rail force integration testing sensor;
Fig. 2 is in one embodiment of the present invention, the side schematic view of wheel rail force integration testing sensor;
Fig. 3 is the diagrammatic cross-section of A-A line in Fig. 1;
Fig. 4 is in another embodiment of the invention, the inner structure schematic diagram of wheel rail force integration testing sensor;
Fig. 5 is in one embodiment of the present invention, the schematic diagram of spring fixed beam;
Fig. 6 is the diagrammatic cross-section of B-B line in Fig. 5.
Embodiment
The feature of wheel rail force integration test sensor of the present invention, effect and the technical purpose that will reach are had and clearly and comprehensively understands, be described in further details below in conjunction with specification drawings and specific embodiments.
As shown in figs. 1 to 6, in one embodiment of the present invention, the switch base plate 2 in wheel rail force integration testing sensor 1 is rectangular parallelepiped backing plate, and this backing material is 40CrMoNiA.2 spill spring fixed beams 4 are symmetrically distributed in switch base plate 2 two ends, and spill spring fixed beam 4 is fixed in the rectangular boss 21 of switch base plate 2 both sides by rectangular recess 45, and fastening with erection bolt 5.Shape and the size of the groove length and width of spill spring fixed beam 4 and the boss 21 of switch base plate 2 are corresponding, make spill spring fixed beam 4 can be arranged on switch base plate 2, spill spring fixed beam 4 front end cross beam and support arm are cantilever beam structure, and and be provided with the gap of 0.1 ~ 0.5mm or 1 ~ 2mm between switch base plate 2, as illustrated the position shown in 22.Spill spring fixed beam 4 is provided with spring pickup groove 43, spring is arranged in spring pickup groove 43, locked by erection bolt 5, stride across crossbeam 41, be buckled on rail, spring pickup groove 43 should be in above rectangular recess 45, guarantee that spill spring fixed beam 4 does not affect cantilever beam portion under spring withholds situation stressed, the milling interplanar distance of spring pickup groove 43 and width, to the erecting shop of spring to be assembled apart from and spring width corresponding, make spring can be assemblied in described spring pickup groove 43, spill spring fixed beam 4 transversely in offer dynamometry hole 46, be positioned at the below of spring installation position, 4 transverse force sensor are transverse force strain-ga(u)ge transducer, tension and compression stress methods is adopted to be that 0 ° and 90 ° of both directions to be arranged in described sensor mounting hole in dynamometry hole 46.4 vertical force sensors are arranged in the supporting zone of switch base plate 2.For making detection more even, in one embodiment of the invention, at switch base plate 2 medium position, be provided with 4 spoke annular grooves 20, and be evenly arranged in the middle part of switch base plate 2 in matrix structure, be round boss 202 at the middle part of each spoke annular groove 20, radial direction along described spoke annular groove evenly arranges 4 spoke arms 201, 4 spoke arms 201 are in 90 ° of settings, be evenly distributed on spoke annular groove 20, round boss 202 is concentric with spoke annular groove 20, spoke arm 201 adopt shear force method be 45 ° and 135 ° of both directions layout dynamometry foil gauges, and the foil gauge on each spoke arm 211 is combined into Wheatstone bridge for measuring the vertical acting force on single spoke boss, the spoke dish 21 vertical force surveyed in district combines to measure and is applied to vertical acting force total on matrix backing plate again.In the middle part of switch base plate 2, both sides are provided with backstop platform 21, for spacing rail rubber blanket.Square taper liner plate 3 bottom surface has 4 grooves 31, the matrix distribution order of the round boss 202 of the distribution sequence of four grooves 31 and 4 spoke annular grooves 20 is completely the same, square taper liner plate 3 is fixed on the round boss 202 of switch base plate 2 by circular groove 31, the surface of contact of square taper liner plate 3 requires smooth and the size of groove should be corresponding with round boss 202 size of switch base plate 2, and square taper liner plate 3 can be assemblied on switch base plate 2.In another embodiment, multiple vertical force sensor also can be arranged in switch base plate spoke ring geosynclinal convex platform, be provided with the assemblage gap of 0.1 ~ 0.5mm or 1 ~ 2mm between square taper liner plate 3 two sides and spill spring fixed beam 4, the angle of inclination of square taper liner plate 3 is 1:40.
Wheel rail force integration testing sensor in the present invention in use, the fastener of WJ-7 installation iron chair can be directly replaced to be installed on the below of rail, when testing locomotive and crossing from rail, rail bears downward test load, rail is by test load going down vertical force and transverse force simultaneously, when fastener is subject to vertical force, vertical force can be applied directly on square taper liner plate 3, and by the round boss 202 of fixing square taper liner plate, this vertical force is evenly passed to switch base plate 2, 4 spoke arms 201 of switch base plate 2 adopt shear force method be 45 ° and 135 ° of both directions layout dynamometry foil gauges, and the foil gauge on each spoke arm 201 is combined into Wheatstone bridge for measuring the vertical acting force on single spoke boss, the spoke annular groove 20 vertical force surveyed in district combines to measure and is applied to vertical acting force total on matrix backing plate again.When fastener is subject to transverse force, microdeformation is there is to power in spring because bearing to cut, impact due to interaction force can drive the crossbeam 41 of the spill beam sensor 4 below spring to be subject to rightabout acting force, acting force suffered by crossbeam 41 can pass to two dynamometry holes 46 in spill beam sensor, can be there is the subtle change of Tension and Compression in dynamometry hole 46 under this acting force, tension and compression stress method is adopted to be 0 ° and 90 ° of both directions layout dynamometry foil gauges in dynamometry hole 46, and two dynamometry hole 46 internal strain sheets are formed a Wheatstone bridge measure horizontal force, vertical force sensor and transverse force sensor are by external cable, the variable quantity of vertical force sensor and transverse force sensor is outwards transmitted, thus the detection realized current vertical force and transverse force.
For ease of detecting more accurately vertical wheel rail force, in one embodiment of the invention, as shown in figures 4-6,4 groups of vertical force sensors adopt chip pressure transducer, are evenly arranged in spoke ring geosynclinal convex platform.Crossbeam 41 two ends of spill spring fixed beam 4 are provided with boss 42, for limiting spring planar movement, the assemblage gap of 0.1 ~ 0.5mm or 1 ~ 2mm is kept between square taper liner plate 3 two sides and spill beam sensor 4, make vertical force and transverse force measure without interfering with each other like this, thus make the detection of current vertical force and transverse force more accurate.
For making vertical force sensor in Reusability, not easily produce side distortion and tilt, increase the lifting surface area of contact vertical force sensor, in one embodiment of the invention, as shown in Figure 4, vertical force sensor pilot hole is offered in equally distributed cylindrical boss 202 in the middle part of switch base plate 2, vertical force sensor is made to be assemblied in cylindrical boss 202 inner, thus make square taper liner plate cover the top being assemblied in above-mentioned switch base plate 2, thus strengthen vertical force sensor stability in use, thus improve the measuring accuracy of sensor.
As shown in Figures 1 to 3, for improving the accuracy of vertical force sensor when detecting, make vertical force sensor can have good deformation space, thus, in one embodiment of the invention, the end face of switch base plate 2 and square taper liner plate bottom surface, when assembling, keep the assemblage gap of 0.1 ~ 0.5mm or 1 ~ 2mm between square taper liner plate 3 lower surface and switch base plate 2, for keeping good sealing, in the region of this assemblage gap, fill elastic sealant.
For improving the accuracy of detection of transverse force, make wheel rail force harmless be delivered in transverse force sensor, as shown in Fig. 4,6, the milling interplanar distance of spring pickup groove 43 and width, to the erecting shop of spring to be assembled apart from and spring width corresponding.Entirety for ease of spring assembly is assembled, outside the end face of spill spring fixed beam 4 end face, be provided with fixing lug boss 21, for fixing spring bolt, enhance the fastness of spring assembling, in embodiments of the present invention, the lateral angle of spill spring fixed beam 4 is arc angling or straight line chamfering.
As shown in Figure 2,3, for improving the accuracy of transverse force sensor when detecting, make transverse force sensor can have good deformation space, thus in embodiments of the present invention, spill spring fixed beam 4 front end cross beam and support arm are cantilever beam structure, spill spring fixed beam 4 and switch base plate 2 are when assembling, keeping the assemblage gap of 0.1 ~ 0.5mm or 1 ~ 2mm between cantilever beam structure and switch base plate 2, for keeping good sealing, in the region of this assemblage gap, filling elastic sealant.
Meanwhile, additionally provide a kind of WJ-7 rail clip in embodiments of the present invention, the metal caul of this fastener is the wheel rail force integration testing sensor in above-mentioned embodiment.
The above, be only specific embodiments of the invention, but can not limit scope of the invention process with this, and the equivalent variations namely generally done according to the present patent application the scope of the claims and description and modification, all should still remain within the scope of the patent.
Claims (10)
1. wheel rail force integration testing sensor, is characterized in that, comprises, switch base plate, spring fixed beam, vertical force sensor and transverse force sensor; Be support portion in the middle part of described switch base plate, both sides comprise mounting boss, and this mounting boss is connected with described spring fixed beam; Described vertical force sensor is fixed in described support portion; Described transverse force sensor is fixed in described spring fixed beam.
2. wheel rail force integration testing sensor as claimed in claim 1, it is characterized in that, described mounting boss is square mounting boss, on the assembling mating surface of described spring fixed beam and described mounting boss, offer the groove corresponding to described square mounting boss, described mounting boss is connected with described spring fixed beam.
3. wheel rail force integration testing sensor as claimed in claim 1, it is characterized in that, the height of described mounting boss is: 5mm ~ 20mm.
4. wheel rail force integration testing sensor as claimed in claim 1, it is characterized in that, also comprise, square taper liner plate, described square taper liner plate is fixedly connected with described support portion; The angle of inclination of described square taper liner plate is the gradient of 1:40.
5. wheel rail force integration test sensor as claimed in claim 1, it is characterized in that, described vertical force sensor is vertical force strain-ga(u)ge transducer; Uniform multiple spoke annular groove in the support portion of described switch base plate; Radial direction along described spoke annular groove arranges multiple spoke arm, and described multiple vertical force strain-ga(u)ge transducer is fixedly connected with described spoke arm.
6. wheel rail force integration testing sensor as claimed in claim 4, it is characterized in that, fill elastic sealant between the bottom surface of described square taper liner plate and the top of described support portion, make the assemblage gap between the bottom surface of described square taper liner plate and the top of described support portion be the assemblage gap of 0.1 ~ 0.5mm or 1 ~ 2mm; Be provided with the assemblage gap of 0.1 ~ 0.5mm or 1 ~ 2mm between the two sides of described square taper liner plate and described spring fixed beam, in the region in this gap, fill elastic sealant.
7. wheel rail force integration testing sensor as claimed in claim 1, it is characterized in that, spring pickup groove is offered on described spring fixed beam top, described spring pickup groove width, corresponding to the spring width of spring to be assembled, be provided with fixing lug boss outside the end face of described spring fixed beam.
8. wheel rail force integration test sensor as claimed in claim 7, it is characterized in that, the lateral angle of described spring fixed beam is arc angling or straight line chamfering.
9. wheel rail force integration test sensor as claimed in claim 1, it is characterized in that, described transverse force sensor is transverse force strain-ga(u)ge transducer; Transverse force sensor dynamometry hole transversely offered by described spring fixed beam, and multiple described transverse force strain-ga(u)ge transducer adopts tension and compression stress method to be that 0 ° and 90 ° of both directions are arranged in described sensor dynamometry.
10. rail clip, is characterized in that, comprises the wheel rail force integration test sensor as any one of claim 1 ~ 9 claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410523230.6A CN104251756A (en) | 2014-09-30 | 2014-09-30 | Wheel-rail force integrating test sensor and rail fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410523230.6A CN104251756A (en) | 2014-09-30 | 2014-09-30 | Wheel-rail force integrating test sensor and rail fastener |
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| CN104251756A true CN104251756A (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410523230.6A Pending CN104251756A (en) | 2014-09-30 | 2014-09-30 | Wheel-rail force integrating test sensor and rail fastener |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560774A (en) * | 2017-10-18 | 2018-01-09 | 郑州铁路局科学技术研究所 | Portable elastic-strip pressure on-line measuring device |
| TWI801506B (en) * | 2018-04-09 | 2023-05-11 | 日商日本電產科寶電子股份有限公司 | Fixing device for strain sensor and torque sensor using same |
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| CN104015756A (en) * | 2014-06-26 | 2014-09-03 | 重庆大学 | Train rail temperature and pressure detection method based on wireless sensor |
| CN204188326U (en) * | 2014-09-30 | 2015-03-04 | 中铁科学技术开发公司 | Wheel rail force integration testing sensor and rail clip |
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1619269A (en) * | 2003-11-18 | 2005-05-25 | 吴良善 | Railroad rail stress testing method |
| EP1617196A1 (en) * | 2004-07-14 | 2006-01-18 | Gtm Gassmann Theiss Messtechnik Gmbh | Force and /or torque sensor |
| CN201555681U (en) * | 2009-11-21 | 2010-08-18 | 杭州钱江称重技术有限公司 | Dynamic and static four-in-one rail pad sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560774A (en) * | 2017-10-18 | 2018-01-09 | 郑州铁路局科学技术研究所 | Portable elastic-strip pressure on-line measuring device |
| TWI801506B (en) * | 2018-04-09 | 2023-05-11 | 日商日本電產科寶電子股份有限公司 | Fixing device for strain sensor and torque sensor using same |
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Application publication date: 20141231 |