CN103543023B - The secondary framework reliability test of bogie - Google Patents
The secondary framework reliability test of bogie Download PDFInfo
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- CN103543023B CN103543023B CN201310535918.1A CN201310535918A CN103543023B CN 103543023 B CN103543023 B CN 103543023B CN 201310535918 A CN201310535918 A CN 201310535918A CN 103543023 B CN103543023 B CN 103543023B
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Abstract
The invention discloses the secondary framework reliability test of a kind of bogie, belong to railway freight-car Components field.It comprises pedestal and longitudinal just beam; Also comprise horizontal load and load frock; Longitudinally just beam two ends are provided with bearing seat, and diaxon bearing is provided with axle box loading blocks, and two axle box loading blocks are added is provided with Plumb load beam; 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 by two parallel flat board connections; Be provided with left connecting rod and right connecting rod between two flat boards, two connecting rods connect by locating the through hole of round pin through two flat boards; Left connecting rod is connected with the king-rod of the secondary framework of U-shaped with the outer end of right connecting rod.Structure of the present invention is simple, easy to operate, makes the secondary framework of railway freight-car U-shaped fully expose its potential fault of construction in early days in development, increases its reliability, be effectively reduced in the operating maintenance cost in life cycle management.
Description
Technical field
The present invention relates to railway goods train bogie parts to 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 is generally made up of (as shown in Figure 1) U-shaped secondary framework 1, connecting link 2 and connecting link round pin 3.Take turns and lateral connection rigidity between wheel pair is added on the one hand to radial device, reduce the right rigidity of shaking the head of wheel on the one hand, front and back wheel is intercoupled to yaw motion, under the prerequisite not reducing bogie lateral stability, make bogie all can be tended to the direction of orbital curve radius to axis by front and back wheel during curve, reach wheel to radiai adjustment, the object reducing 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 U-shaped secondary framework criteria of right and wrong part, there is no executable related reliability testing standard in domestic and international official official document data at present, more have no rig for testing and the result evaluation method of these tests applicable.
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 longitudinal just beam; Also comprise horizontal load and load frock; Longitudinally just beam two ends are provided with bearing seat, and diaxon bearing is provided with axle box loading blocks, and two axle box loading blocks are added is provided with Plumb load beam; 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 by two parallel flat board connections; Be provided with left connecting rod and right connecting rod between two flat boards, two connecting rods connect by locating the through hole of round pin through two flat boards; Left connecting rod is connected with the king-rod of the secondary framework of U-shaped with the outer end of right connecting rod.
The invention has the beneficial effects as follows, structure is simple, easy to operate, can simulate the acting force that the secondary framework of U-shaped experiences in actual motion comparatively truly, 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 its potential fault of construction of the early stage fully exposure 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 radial apparatus structure schematic diagram;
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 is to partial enlargement (pasting the signal of foil gauge position) figure.
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-dull and stereotyped, 19-horizontal loading head.
Embodiment
Below in conjunction with embodiment, the present invention is further described.
See Fig. 2-5, the secondary framework reliability test of bogie, comprises pedestal 17 and longitudinal just beam 8; Also comprise horizontal load and load frock 7; Longitudinally just beam 8 two ends are provided with bearing seat 4, and diaxon bearing 4 is provided with that axle box loading blocks 5, two axle box loading blocks 5 is added is provided with Plumb load beam 6; 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; Left connecting rod 9 is provided with and right connecting rod 10, two connecting rod connects by locating the through hole of round pin 11 through two flat boards 18 between two flat boards 18; Left connecting rod 9 is connected with the king-rod of the secondary framework 1 of U-shaped with the outer end of right connecting rod 10.
Test is carried out on general intensity fatigue test board.The secondary framework 1 of test U-shaped is arranged on the longitudinally firm beam 8 of a simulation wheel shaft, the secondary framework 1 of U-shaped is fixed on by Plumb load beam 6 and axle box loading blocks 5 on the bearing seat 4 at longitudinally just beam 8 two ends, in a vertical actuator 14(Fig. 2 shown in arrow) load for simulating vertical load.Vertical load is loaded by Plumb load beam 6 and axle box loading blocks 5.Vertical and horizontal load is by a longitudinal actuator 16(Fig. 3 shown in arrow) and a horizontal actuator 15(Fig. 3 in shown in arrow) load frock 7 by horizontal load and load.Horizontal load loads frock 7 and is made up of left connecting rod 9, right connecting rod 10, location round pin 11 and longitudinal loading head 12, horizontal loading head 19, can mutually rotate around locating round pin 11 between two between left connecting rod 9, right connecting rod 10 and longitudinal loading head 12, horizontal loading head 19.
Horizontal, longitudinal, vertical stress point on the secondary framework 1 of U-shaped is pasted with foil gauge 13.
Before test, paste at horizontal, longitudinal, the vertical position of the secondary framework 1 of U-shaped the demarcation that foil gauge 13 carries out loading force; Demarcate the position of measuring point and be chosen for larger stress that Strength co-mputation obtains and the less position of stress gradient.Measuring point should comprise the demarcation content to various single load, generally should comprise vertical, connecting link vertical and horizontal three kinds of load.Fig. 5 is an example.Key position stress mornitoring and judge the foundation of fatigue load accuracy when calibration value can be used as fail-test.
Vertical load timing signal, first apply the vertical static load of 22.5kN, foil gauge 13 reading is reset, then slowly imposed load is the vertical static load that every bearing is subject to 1.0C, 1.5C and 2.38C(C), record foil gauge reading under each load respectively, then load is slowly down to 1.5C, 1.0C and 22.5kN, records the foil gauge reading under each load respectively, above-mentioned loading and recording process are a circulation.Timing signal carries out the loadings of three circulations, and the mean value getting the reading of foil gauge under each load is the calibration value under this load.
Laterally during (longitudinal direction) load calibration, first apply transverse direction (longitudinal direction) load of 5kN, foil gauge reading is reset, then slow imposed load to 20,40 and 60kN, record foil gauge reading under each load respectively, then load is slowly down to 40,20 and 5kN, records the foil gauge reading under each load respectively, above-mentioned loading and recording process are a circulation.Timing signal carries out the loadings of three circulations, and the mean value getting the reading of foil gauge under each load is the calibration value under this load.Above-mentioned calibration value, as key position stress mornitoring during fail-test and the foundation judging test load accuracy.
The test load of secondary framework mainly comprises vertical load and longitudinal, transverse load, and during test, various load can load simultaneously, also can load separately, without the need to considering its phase relation simultaneously when loading.Loading frequency is not more than 7Hz, and Loaded contact analysis is sinusoidal wave.
The secondary framework of some U-shaped is directly passed to adapter due to vertical load, 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
5secondary.The secondary framework of U-shaped for the heavy bogie of 25t axle: longitudinal loading load value is generally ± 55kN, loads number of times and is not less than 5.0 × 10
5secondary; Transverse load load value is generally-15 ~ 55kN, loads number of times and is not less than 3.0 × 10
5secondary.For the secondary framework of the U-shaped that other axles are heavy, often increase by axle is heavy or reduces 5t, magnitude of load increases or reduces 5%.Load can be divided into multiple loading unit to apply.
After off-test, detect a flaw to the secondary framework of U-shaped, 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 especially adopting mode that is vertical, the loading of vertical and horizontal three-dimensional to carry out the prerequisite tested, some improvement can also be made to the specific embodiment of the present invention.
The invention provides the secondary framework reliability test method of a kind of railway freight-car radial steering U-shaped, it is carrying out the secondary framework dynamic stress rest of a large amount of circuit U-shaped, the establishment of loading spectrum and U-shaped secondary framework stress characteristic theoretical research foundation produce, the acting force that the secondary framework of U-shaped experiences in actual motion can be simulated comparatively truly, for the secondary framework reliability of accurate evaluation U-shaped is laid a good foundation after rational through engineering approaches process.
Claims (2)
1. the secondary framework reliability test of bogie, comprises pedestal (17) and longitudinal just beam (8); It is characterized in that, also comprise horizontal load and load 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), and two axle box loading blocks (5) are added is provided with Plumb load beam (6); 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 by two parallel flat board (18) connections; Be provided with left connecting rod (9) and right connecting rod (10) between two flat boards (18), two connecting rods connect by locating the through hole of round pin (11) through two flat boards (18); Left connecting rod (9) is connected with the king-rod of the secondary framework (1) of U-shaped with the outer end of right connecting rod (10).
2. the secondary framework reliability test of bogie according to claim 1, is characterized in that, horizontal, longitudinal, the vertical stress point on the secondary framework (1) of described U-shaped is pasted with foil gauge (13).
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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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| CN103543023A CN103543023A (en) | 2014-01-29 |
| CN103543023B true CN103543023B (en) | 2015-08-12 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107271205B (en) * | 2017-06-13 | 2019-09-20 | 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 |
| 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 |
| 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 |
Citations (5)
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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 |
|---|---|---|---|---|
| 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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