CN103543023A - Device for testing reliability of secondary frames of bogie - Google Patents
Device for testing reliability of secondary frames of bogie Download PDFInfo
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- CN103543023A CN103543023A CN201310535918.1A CN201310535918A CN103543023A CN 103543023 A CN103543023 A CN 103543023A CN 201310535918 A CN201310535918 A CN 201310535918A CN 103543023 A CN103543023 A CN 103543023A
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Abstract
The invention discloses a device for testing reliability of secondary frames of a bogie and belongs to the field of a railway freight car component detecting technology. The device comprises a base, a longitudinal steel beam and a horizontal load loading tool. The two ends of the longitudinal steel beam are provided with bearing blocks. Bearing box loading blocks are arranged on the two bearing blocks. A vertical loading beam is arranged on the two bearing box loading blocks in an erected mode. Two side bars of the U-shaped secondary frames are fixed on the bearing blocks through the vertical loading beam and the bearing box loading blocks. The horizontal load loading tool comprises a transverse loading head and a longitudinal loading head, wherein the transverse loading head and the longitudinal loading head are connected through two parallel flat plates. A left connecting bar and a right connecting bar are arranged between the two flat plates and are connected through a locating round pin penetrating through two through holes in the two flat plates. The outer end of the left connecting bar and the outer end of the right connecting bar are connected with middle rods of the U-shaped secondary frames. The device for testing the reliability of the secondary frames of the bogie is simple in structure and convenient to operate, enables the potential structure defects of the U-shaped secondary frames of a railway freight car to be fully exposed in the early stage of development, increases reliability of the U-shaped secondary frames and effectively reduces operation cost and maintenance cost in the whole life cycle.
Description
Technical field
The present invention relates to railway goods train bogie parts and detect, especially the reliability of the secondary framework of U-shaped detects, and belongs to railway freight-car Components field.
Background technology
Wheel is one of significant components of lorry radial steering to radial device, and it generally forms (as shown in Figure 1) by the secondary framework 1 of U-shaped, connecting link 2 and connecting link round pin 3.Wheel has increased the horizontal coupling stiffness between wheel pair on the one hand to radial device, reduced and taken turns the right rigidity of shaking the head on the one hand, front and back wheel is intercoupled to yaw motion, do not reducing under the prerequisite of bogie lateral stability, while making bogie pass through curve, front and back wheel all can tend to the direction of orbital curve radius to axis, reaches the object of wheel to radiai adjustment, reduction wheel-rail interaction.
The secondary framework of U-shaped is the vitals of wheel to radial device, and its structural strength is the important content of bogie performance evaluation.Due to the secondary framework criteria of right and wrong of U-shaped part, in official's official document data, there is no executable related reliability test standard both at home and abroad at present, more have no the rig for testing and the result evaluation method that are applicable to these tests.
Summary of the invention
For the problems referred to above, the invention provides the secondary framework reliability test of a kind of U-shaped.
The technical solution adopted for the present invention to solve the technical problems is: the secondary framework reliability test of bogie, comprises pedestal and longitudinally firm beam; Also comprise that horizontal load loads frock; Longitudinally just beam two ends are provided with bearing seat, and diaxon bearing is provided with axle box loading blocks, the added Plumb load beam that is provided with of two axle box loading blocks; Two side levers of the secondary framework of U-shaped are fixed on bearing seat by Plumb load beam and axle box loading blocks; Horizontal load loads frock and comprises horizontal loading head and longitudinal loading head, and the two is connected by two parallel flat boards; Between two flat boards, be provided with left connecting rod and right connecting rod, two connecting rods connect by locating the through hole of round pin through two flat boards; The outer end of left connecting rod and right connecting rod is connected with the king-rod of the secondary framework of U-shaped.
The invention has the beneficial effects as follows, simple in structure, easy to operate, can simulate comparatively truly the acting force that the secondary framework of U-shaped experiences in actual motion, for the secondary framework reliability of accurate evaluation U-shaped is laid a good foundation.Make the secondary framework of railway freight-car U-shaped in early stage its potential fault of construction that fully exposes of development, increase its reliability, be effectively reduced in the operating maintenance cost in life cycle management.
Accompanying drawing explanation
Fig. 1 is that wheel is to apparatus structure schematic diagram radially;
Fig. 2 is general structure schematic diagram of the present invention;
Fig. 3 is that horizontal load loads tool structure schematic diagram;
Fig. 4 is the secondary frame construction schematic diagram of U-shaped;
Fig. 5 is that the A of Fig. 4 amplifies (pasting the signal of foil gauge position) figure to part.
Parts and numbering in figure:
The secondary framework of 1-U-shaped, 2-connecting link, 3-connecting link round pin, 4-bearing seat,
5-axle box loading blocks, 6-Plumb load beam, 7-horizontal load loads frock, 8-longitudinally firm beam,
9-left connecting rod, 10-right connecting rod, 12-longitudinal loading head, 13-foil gauge,
14-vertical actuator, 15-horizontal actuator, 16-longitudinal actuator, 17-pedestal,
18-flat board, 19-horizontal loading head.
Embodiment
Below in conjunction with embodiment, the present invention is further described.
Referring to Fig. 2-5, the secondary framework reliability test of bogie, comprises pedestal 17 and longitudinally firm beam 8; Also comprise that horizontal load loads frock 7; Longitudinally just beam 8 two ends are provided with bearing seat 4, and diaxon bearing 4 is provided with the added Plumb load beam 6 that is provided with of axle box loading blocks 5, two axle box loading blocks 5; Two side levers of the secondary framework 1 of U-shaped are fixed on bearing seat 4 by Plumb load beam 6 and axle box loading blocks 5; Horizontal load loads frock 7 and comprises horizontal loading head 19 and longitudinal loading head 12, and the two is connected by two parallel flat boards 18; Between two flat boards 18, being provided with left connecting rod 9 and right connecting rod 10, two connecting rods connects by locating the through hole of round pin 11 through two flat boards 18; The outer end of left connecting rod 9 and right connecting rod 10 is connected with the king-rod of the secondary framework 1 of U-shaped.
Test is carried out on general intensity fatigue test board.Test is arranged on the longitudinally firm beam 8 of a simulation wheel shaft with the secondary framework 1 of U-shaped, the secondary framework 1 of U-shaped is fixed on longitudinally just on the bearing seat 4 at beam 8 two ends by Plumb load beam 6 and axle box loading blocks 5, in a vertical actuator 14(Fig. 2 shown in arrow) for simulating vertical load, load.Vertical load loads by Plumb load beam 6 and axle box loading blocks 5.Vertical and horizontal load is in a longitudinal actuator 16(Fig. 3 shown in arrow) and a horizontal actuator 15(Fig. 3 in shown in arrow) by horizontal load, load frock 7 and load.Horizontal load loading frock 7 is comprised of left connecting rod 9, right connecting rod 10, location round pin 11 and longitudinal loading head 12, horizontal loading head 19, between left connecting rod 9, right connecting rod 10 and longitudinal loading head 12, horizontal loading head 19, can around location round pin 11, mutually rotate between two.
Horizontal, longitudinal, vertical stress point on the secondary framework 1 of U-shaped is pasted with foil gauge 13.
Before test, at horizontal, longitudinal, the vertical position of the secondary framework 1 of U-shaped, paste foil gauge 13 and carry out the demarcation of loading force; The position of demarcating measuring point is chosen for larger stress and the less position of stress gradient that intensity calculates.Measuring point should comprise the demarcation content to various single loads, generally should comprise vertical, three kinds of load of connecting link vertical and horizontal.Fig. 5 is an example.When calibration value can be used as fail-test, key position stress detects and judges the foundation of fatigue load accuracy.
Vertical load timing signal, first apply the vertical static load of 22.5kN, by foil gauge 13 reading zero clearings, then slowly imposed load to 1.0C, 1.5C and 2.38C(C be the vertical static load that every bearing is subject to), record respectively foil gauge reading under each load, then load is slowly down to 1.5C, 1.0C and 22.5kN, records respectively the foil gauge reading under each load, above-mentioned loading and recording process are a circulation.Timing signal carries out the loading of three circulations, and the mean value of getting the reading of foil gauge under each load is the calibration value under this load.
Laterally during (longitudinally) load calibration, first apply horizontal (longitudinally) load of 5kN, by the zero clearing of foil gauge reading, then slow imposed load to 20,40 and 60kN, record respectively foil gauge reading under each load, then load is slowly down to 40,20 and 5kN, records respectively the foil gauge reading under each load, above-mentioned loading and recording process are a circulation.Timing signal carries out the loading of three circulations, and the mean value of getting the reading of foil gauge under each load is the calibration value under this load.Above-mentioned calibration value, during as fail-test, key position stress detects and judges the foundation of test load accuracy.
The test load of secondary framework mainly comprise vertical load and longitudinally, transverse load, during test, various load can load simultaneously, also can load separately, while loading simultaneously without considering its phase relation.Loading frequency is not more than 7Hz, and it is sinusoidal wave loading waveform.
The secondary framework of some U-shaped, because vertical load is directly passed to adapter, can not carry out the pulsation loading fatigue test of vertical load.
Longitudinally, transverse load loading position is the attachment pegs place of the secondary framework 1 of U-shaped and connecting link 2.
The vertical Fatigue Testing Loads value of secondary framework is 0～2.38C, and loading number of times Plumb load number of times is 1.5 * 10
5inferior.The secondary framework of U-shaped for the heavy bogie of 25t axle: be generally ± 55kN of longitudinal loading load value, loads number of times and be not less than 5.0 * 10
5inferior; Be generally-15～55kN of transverse load load value, loads number of times and is not less than 3.0 * 10
5inferior.For the secondary framework of the heavy U-shaped of other axles, by axle, weigh every increase or reduce 5t, magnitude of load increases or reduces 5%.Load can be divided into a plurality of loading units and apply.
After off-test, the secondary framework of U-shaped is detected a flaw, visual visible dangerous crackle does not occur, or underbead crack length is no more than 2.35mm, it is qualified that the secondary framework fatigue reliability of U-shaped is judged to be.
The above is also described embodiment by reference to the accompanying drawings, but is not limitation of the scope of the invention.It should be pointed out that and do not departing from the principle of the invention, under the prerequisite that the mode that especially adopts vertical, vertical and horizontal three-dimensional to load is tested, to the specific embodiment of the present invention, can also make some improvement.
The invention provides the secondary framework reliability test method of a kind of railway freight-car radial steering U-shaped, it is on the establishment of the secondary framework dynamic stress test of a large amount of circuit U-shapeds, loading spectrum and the secondary framework stress characteristic theoretical research of U-shaped basis, to have produced having carried out, after processing, rational through engineering approaches can simulate comparatively truly the acting force that the secondary framework of U-shaped experiences in actual motion, for the secondary framework reliability of accurate evaluation U-shaped is laid a good foundation.
Claims (2)
1. the secondary framework reliability test of bogie, comprises pedestal (17) and longitudinally firm beam (8); It is characterized in that, also comprise that horizontal load loads frock (7); Longitudinally just beam (8) two ends are provided with bearing seat (4), and diaxon bearing (4) is provided with axle box loading blocks (5), the added Plumb load beam (6) that is provided with of two axle box loading blocks (5); Two side levers of the secondary framework of U-shaped (1) are fixed on bearing seat (4) by Plumb load beam (6) and axle box loading blocks (5); Horizontal load loads frock (7) and comprises horizontal loading head (19) and longitudinal loading head (12), and the two is connected by two parallel flat boards (18); Between two flat boards (18), be provided with left connecting rod (9) and right connecting rod (10), two connecting rods connect by locating the through hole of round pin (11) through two flat boards (18); The outer end of left connecting rod (9) and right connecting rod (10) is connected with the king-rod of the secondary framework of U-shaped (1).
2. the secondary framework reliability test of bogie according to claim 1, is characterized in that, horizontal, longitudinal, the vertical stress point on the described secondary framework of U-shaped (1) is pasted with foil gauge (13).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310535918.1A CN103543023B (en) | 2013-11-02 | 2013-11-02 | The secondary framework reliability test of bogie |
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| CN201310535918.1A CN103543023B (en) | 2013-11-02 | 2013-11-02 | The secondary framework reliability test of bogie |
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| CN103543023B CN103543023B (en) | 2015-08-12 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155124A (en) * | 2014-08-14 | 2014-11-19 | 南车眉山车辆有限公司 | U-shaped auxiliary frame stiffness testing device |
| CN107271205A (en) * | 2017-06-13 | 2017-10-20 | 中车齐齐哈尔车辆有限公司 | Rolling stock is delayed unloading the fatigue experimental device and fatigue test method of beam |
| CN109060366A (en) * | 2018-05-23 | 2018-12-21 | 中车石家庄车辆有限公司 | Bogie pair framework detecting tool and method |
| CN113686689A (en) * | 2021-08-16 | 2021-11-23 | 株洲时代新材料科技股份有限公司 | Device and method for carrying out combined loading test on rubber elastic element of railway vehicle |
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| KR20030084870A (en) * | 2003-10-15 | 2003-11-01 | 한국철도기술연구원 | Load testing system of bogie frame for rolling stock |
| EP1918689A2 (en) * | 2006-10-30 | 2008-05-07 | Schenck Process GmbH | Method and device for positioning a unit under test in a test bed for bogies of rail vehicles |
| CN102501872A (en) * | 2011-10-28 | 2012-06-20 | 南车眉山车辆有限公司 | Bogie auxiliary framework of railway wagon and production technology thereof |
| CN102730018A (en) * | 2012-06-04 | 2012-10-17 | 南车眉山车辆有限公司 | Radial steering rack for secondary framework |
| CN203658070U (en) * | 2013-11-02 | 2014-06-18 | 南车眉山车辆有限公司 | Reliability test device for bogie auxiliary framework |
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2013
- 2013-11-02 CN CN201310535918.1A patent/CN103543023B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20030084870A (en) * | 2003-10-15 | 2003-11-01 | 한국철도기술연구원 | Load testing system of bogie frame for rolling stock |
| EP1918689A2 (en) * | 2006-10-30 | 2008-05-07 | Schenck Process GmbH | Method and device for positioning a unit under test in a test bed for bogies of rail vehicles |
| CN102501872A (en) * | 2011-10-28 | 2012-06-20 | 南车眉山车辆有限公司 | Bogie auxiliary framework of railway wagon and production technology thereof |
| CN102730018A (en) * | 2012-06-04 | 2012-10-17 | 南车眉山车辆有限公司 | Radial steering rack for secondary framework |
| CN203658070U (en) * | 2013-11-02 | 2014-06-18 | 南车眉山车辆有限公司 | Reliability test device for bogie auxiliary framework |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155124A (en) * | 2014-08-14 | 2014-11-19 | 南车眉山车辆有限公司 | U-shaped auxiliary frame stiffness testing device |
| CN104155124B (en) * | 2014-08-14 | 2016-09-07 | 中车眉山车辆有限公司 | U-shaped pair framework device for testing stiffness |
| CN107271205A (en) * | 2017-06-13 | 2017-10-20 | 中车齐齐哈尔车辆有限公司 | Rolling stock is delayed unloading the fatigue experimental device and fatigue test method of beam |
| CN109060366A (en) * | 2018-05-23 | 2018-12-21 | 中车石家庄车辆有限公司 | Bogie pair framework detecting tool and method |
| CN109060366B (en) * | 2018-05-23 | 2020-05-19 | 中车石家庄车辆有限公司 | Tool and method for detecting auxiliary frame of bogie |
| CN113686689A (en) * | 2021-08-16 | 2021-11-23 | 株洲时代新材料科技股份有限公司 | Device and method for carrying out combined loading test on rubber elastic element of railway vehicle |
| CN113686689B (en) * | 2021-08-16 | 2024-04-05 | 株洲时代新材料科技股份有限公司 | Device and method for carrying out combined loading test on rubber elastic element of railway vehicle |
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