CN103175702A - Fatigue test device and method for axle - Google Patents
Fatigue test device and method for axle Download PDFInfo
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- CN103175702A CN103175702A CN201110430692XA CN201110430692A CN103175702A CN 103175702 A CN103175702 A CN 103175702A CN 201110430692X A CN201110430692X A CN 201110430692XA CN 201110430692 A CN201110430692 A CN 201110430692A CN 103175702 A CN103175702 A CN 103175702A
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Abstract
The invention relates to a fatigue test device and method for an axle. The fatigue test device for the axle comprises a loading beam and a platform. A wheel is radially fixed on the platform, and the end of an axle to be tested is fixed axially; and a vertical actuating cylinder, a transverse actuating cylinder and a longitudinal actuating cylinder are connected to a journal of the axle to be tested respectively. The journal of the axle to be tested is mounted in a mounting seat through a rolling bearing; and the vertical actuating cylinder, the transverse actuating cylinder and the longitudinal actuating cylinder are connected with the mounting seat respectively. On the basis of the test device and method, the fatigue test of the journal, an axle body and a wheel disk can be achieved comprehensively; a test mode of journal rotation bending and axial loading can be set comprehensively aimed at a fatigue test and axial loading solution towards the journal, and accordingly, the fatigue test comprehensiveness of the whole axle is improved.
Description
Technical field
The present invention relates to a kind of devices and methods therefor of implementing torture test for the axle journal of rail vehicle wheel shaft, belong to the track traffic technical field.
Background technology
Along with the significantly lifting of rapidly universal and the Vehicle Speed of domestic city track traffic, for the bogie frame of bearing body and transmitting tractive power, higher design and use requirement has been proposed.Wherein, wheel shaft is bogie important composition parts, for wheel shaft carry out torture test be guarantee long-term, at a high speed and the guarantee of safe operation.
At present domestic test unit for wheel shaft mainly is divided into eccentricity excitation formula, rotoflector formula, whole tumbling-type and free beam rotoflector formula structure, and correspondingly test method is confined to the torture test at axle body, disc position.
The test unit that above-mentioned prior art generally adopts still can not carry out the torture test at axle journal position, and its means to save the situation can only be by the test figure to other position, carries out converting to simulate approx the fatigue strength coefficient of axle journal accordingly.
And, based on the test unit of said structure and test method, be only to apply radial loaded and the shaftless loading that makes progress and Data Detection export function to wheel shaft.
Therefore, use existing wheel shaft fatigue experimental device there is no method from system set up load with stress crooked or and the axle journal endurance ratio between corresponding relation, still can not estimate all sidedly the rationality that whether possesses of wheel shaft structure design and material.
In view of this, the special present patent application that proposes.
Summary of the invention
Wheel shaft fatigue experimental device of the present invention and method thereof, its purpose is to solve the problem of above-mentioned prior art existence and can implements torture test and axially load solution for axle journal, thereby set up all sidedly axle journal rotoflector and the test method that axially loads, comprehensive to the torture test that improves wheel shaft integral body.
For achieving the above object, described wheel shaft fatigue test method is as follows:
Employing includes the test unit that loads crossbeam and platform, and platform is used for fixing vehicle wheel radially, axially fixes the end of tested wheel shaft;
At the axle journal place of tested wheel shaft, connect respectively vertical start cylinder, horizontal start cylinder and vertical start cylinder;
Tested wheel shaft corner at contiguous wheel is pasted with the stress detection lug;
In implementing axle journal torture test process, tested wheel shaft is done circumferential rotation at the uniform velocity, and above-mentioned 3 start cylinders to the axle journal imposed load of tested wheel shaft, operate to complete the required cycle of torture test respectively.
As above-mentioned basic scheme, can not only be used for implementing the torture test of axle body, disc, can also directly carry out the torture test at axle journal position, also can realize axial loading further.Therefore can according to the push-and-pull load repeatedly of 3 direction start cylinders of editor, set up comprehensive, synthesization torture test flow process, thereby help wheel shaft structure and the rational accuracy of proving of material selection.
Paste at the axle journal place
The stress detection lug, can utilize
Dynamic test setRecord stress data, pass through counter stress data analysis and research after finishing in torture test, determine whether the structural design of axle journal is reasonable.
For synthetically apply the load on multiple directions at the axle journal place, the axle journal of tested wheel shaft can be installed on by rolling bearing the inside of mount pad, thereby the interior ring of simulation axle journal when reality is used press-fits environment.
Described vertical start cylinder, horizontal start cylinder and vertical start cylinder are connected to mount pad, thereby the load of suffered three directions of axle journal is linked together by mount pad.
Before implementing the axle journal torture test, should at first carry out the wheel shaft radial stress and demarcate, with the stress corresponding relation of rotation bent angle between clear and definite radially push-and-pull load and tested wheel shaft.
Particularly, can be when laterally the start cylinder apply horizontal push-and-pull load repeatedly to axle journal, vertical start cylinder is in free state with vertical start cylinder, obtains the stress detection lug data output of tested wheel shaft corner stickup;
When vertically the start cylinder applied vertical push-and-pull load repeatedly to axle journal, vertical start cylinder was in free state with horizontal start cylinder, obtained the stress detection lug data output of tested wheel shaft corner stickup.
Based on identical principle, carried out axle axial stress and demarcate before implementing the axle journal torture test, with the stress corresponding relation of rotation bent angle between clear and definite axially push-and-pull load and tested wheel shaft.
Particularly, can be when vertical start cylinder apply axial push-and-pull load repeatedly to axle journal, vertically the start cylinder is in free state with horizontal start cylinder, obtains the stress detection lug data output of tested wheel shaft corner stickup.
Comparatively refinement with preferred torture test flow process is, in implementing radially torture test process of axle journal, laterally start cylinder, vertical start cylinder apply radially push-and-pull load to complete the torture test of regulation cycle repeatedly to axle journal.
Implementing journal shaft in the torture test process, vertical start cylinder applies axial push-and-pull load repeatedly to axle journal, and in the axial fatigue test, implements radially torture test of axle journal.
Based on above-mentioned design concept, and use and can realize following test unit with the upper whorl axial fatigue test method:
Test unit mainly includes and loads crossbeam and platform, on platform radially fixing vehicle wheel, axially fix the end of tested wheel shaft;
At the axle journal place of tested wheel shaft, connect respectively vertical start cylinder, horizontal start cylinder and vertical start cylinder.
The interior ring that applies axle journal under effect and simulation real use state for improving further axle journal place combined load press-fits environment, and the improvement project that can take is that the axle journal of tested wheel shaft is installed on the inside of mount pad by rolling bearing; Vertical start cylinder, horizontal start cylinder and vertical start cylinder are connected to mount pad.
Content to sum up, wheel shaft the fatigue experimental device of the present invention and method tool is advantageous is, can realize all sidedly the torture test of axle journal, axle body and the disc of wheel shaft based on the test battery apparatus and method, simultaneously set up wheel shaft rotating bending test data take axle journal as representative with axial loading scheme, provide Data support for improving wheel shaft structure with optimization of material design.
Description of drawings
Now in conjunction with the following drawings the present invention is described further.
Fig. 1 is the schematic diagram when using the wheel shaft fatigue experimental device and carrying out the axle journal torture test;
Fig. 2 is bowing to schematic diagram of Fig. 1;
Fig. 3 is the schematic diagram when using the wheel shaft fatigue experimental device and carrying out the axle body torture test;
As shown in Figure 1 to Figure 3, horizontal start cylinder 1, horizontal start cylinder mount pad 2, platform 3, tested wheel shaft 4, mount pad 5, vertical start cylinder 6 loads crossbeam 7, wheel 8, vertical start cylinder 9, rolling bearing 10, vertically start cylinder mount pad 11.
A section in Fig. 1, the B section in Fig. 2 represent respectively, pastes the stress detection lugs in tested wheel shaft 4 corners.
Embodiment
Embodiment 1, as depicted in figs. 1 and 2, is used for realizing the test unit of wheel shaft neck fatigue test method, mainly includes and loads crossbeam 7 and platform 3.Wherein,
On platform 3 radially fixing vehicle wheel 8, axially fix the end of tested wheel shaft 4;
At the axle journal place of tested wheel shaft 4, be installed on the inside of mount pad 5 by rolling bearing 10, vertical start cylinder 6, horizontal start cylinder 1 and vertical start cylinder 9 are connected to mount pad 5.
The described shaft neck fatigue test method of taking turns is to be pasted with the stress detection lug in tested wheel shaft 4 corners of contiguous wheel 8;
In implementing axle journal torture test process, tested wheel shaft 4 is done circumferential rotation at the uniform velocity, and above-mentioned vertical start cylinder 6, horizontal start cylinder 1 and vertical start cylinder 9 to the axle journal imposed load of tested wheel shaft 4, operate to complete the required cycle of torture test respectively.
Carrying out the wheel shaft radial stress before implementing the axle journal torture test demarcates, namely when laterally start cylinder 1 applies horizontal push-and-pull load repeatedly to axle journal, vertical start cylinder 6 is in free state with vertical start cylinder 9, obtains the stress detection lug data output of tested wheel shaft 4 corners stickups;
When vertically start cylinder 9 applies vertical push-and-pull load repeatedly to axle journal, vertical start cylinder 6 is in free state with horizontal start cylinder 1, obtain the stress detection lug data output of tested wheel shaft 4 corners stickups, thereby obtain the stress corresponding relation of rotation bent angle between radially push-and-pull load and tested wheel shaft 4.
Carrying out axle axial stress before implementing the axle journal torture test demarcates, namely when vertical start cylinder 6 applies axial push-and-pull load repeatedly to axle journal, vertically start cylinder 9 is in free state with horizontal start cylinder 1, obtain the stress detection lug data output of tested wheel shaft 4 corners stickups, thereby obtain the stress corresponding relation of rotation bent angle between axial push-and-pull load and tested wheel shaft 4.
In implementing radially torture test process of axle journal, laterally start cylinder 1, vertical start cylinder 9 apply radially push-and-pull load to complete the torture test of regulation cycle repeatedly to axle journal.
Implementing journal shaft in the torture test process, vertical start cylinder 6 applies axial push-and-pull load repeatedly to axle journal, namely in the axial fatigue test, implements radially torture test of axle journal.
Other test units and test method are similar to Example 1, at this repeated description no longer.
As mentioned above, given scheme content, can derive similar technical scheme in conjunction with the accompanying drawings and embodiments.In every case be the content that does not break away from technical solution of the present invention, to any simple modification, equivalent variations and modification that above embodiment does, all still belong to the protection domain of technical solution of the present invention according to above-mentioned technical spirit.
Claims (8)
1. wheel shaft fatigue test method, it is characterized in that: adopt to include the test unit that loads crossbeam (7) and platform (3), platform (3) for fixing vehicle wheel (8) radially, axially fix the end of tested wheel shaft (4);
At the axle journal place of tested wheel shaft (4), connect respectively vertical start cylinder (6), horizontal start cylinder (1) and vertical start cylinder (9);
Tested wheel shaft (4) corner at contiguous wheel (8) is pasted with the stress detection lug;
In implementing axle journal torture test process, tested wheel shaft (4) is done circumferential rotation at the uniform velocity, and above-mentioned 3 start cylinders to the axle journal imposed load of tested wheel shaft (4), operate to complete the required cycle of torture test respectively.
2. wheel shaft fatigue test method according to claim 1 is characterized in that: the axle journal of tested wheel shaft (4) is installed on the inside of mount pad (5) by rolling bearing (10);
Vertical start cylinder (6), horizontal start cylinder (1) and vertical start cylinder (9) are connected to mount pad (5).
3. wheel shaft fatigue test method according to claim 1 and 2 is characterized in that: carried out the wheel shaft radial stress and demarcate before implementing the axle journal torture test,
When laterally start cylinder (1) applied horizontal push-and-pull load repeatedly to axle journal, vertical start cylinder (6) was in free state with vertical start cylinder (9), obtained the stress detection lug data output of tested wheel shaft (4) corner stickup;
When vertically start cylinder (9) applies vertical push-and-pull load repeatedly to axle journal, vertical start cylinder (6) is in free state with horizontal start cylinder (1), obtain the stress detection lug data output of tested wheel shaft (4) corner stickup, thereby obtain the stress corresponding relation of rotation bent angle between radially push-and-pull load and tested wheel shaft (4).
4. wheel shaft fatigue test method according to claim 3 is characterized in that: carried out axle axial stress and demarcate before implementing the axle journal torture test,
When vertical start cylinder (6) applies axial push-and-pull load repeatedly to axle journal, vertically start cylinder (9) is in free state with horizontal start cylinder (1), obtain the stress detection lug data output of tested wheel shaft (4) corner stickup, thereby obtain the stress corresponding relation of rotation bent angle between axial push-and-pull load and tested wheel shaft (4).
5. wheel shaft fatigue test method according to claim 4, it is characterized in that: in implementing radially torture test process of axle journal, laterally start cylinder (1), vertical start cylinder (9) apply radially push-and-pull load to complete the torture test of regulation cycle repeatedly to axle journal.
6. wheel shaft fatigue test method according to claim 5 is characterized in that: implementing journal shaft in the torture test process, vertical start cylinder (6) applies axial push-and-pull load repeatedly to axle journal;
In the axial fatigue test, implement radially torture test of axle journal.
7. realize it is characterized in that as the test unit of wheel shaft fatigue test method as described in claim 1 to 6: include and load crossbeam (7) and platform (3),
On platform (3) radially fixing vehicle wheel (8), axially fix the end of tested wheel shaft (4);
At the axle journal place of tested wheel shaft (4), connect respectively vertical start cylinder (6), horizontal start cylinder (1) and vertical start cylinder (9).
8. wheel shaft fatigue experimental device according to claim 7 is characterized in that: the axle journal of tested wheel shaft (4) is installed on the inside of mount pad (5) by rolling bearing (10);
Vertical start cylinder (6), horizontal start cylinder (1) and vertical start cylinder (9) are connected to mount pad (5).
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| CN201110430692.XA CN103175702B (en) | 2011-12-20 | 2011-12-20 | Fatigue test device and method for axle |
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| CN201110430692.XA CN103175702B (en) | 2011-12-20 | 2011-12-20 | Fatigue test device and method for axle |
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| CN103175702A true CN103175702A (en) | 2013-06-26 |
| CN103175702B CN103175702B (en) | 2015-04-22 |
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| CN103487266A (en) * | 2013-09-17 | 2014-01-01 | 中国铁道科学研究院金属及化学研究所 | Experimental equipment and experimental method for testing fatigue performance of locomotive wheels |
| CN103674584A (en) * | 2013-12-03 | 2014-03-26 | 南车青岛四方机车车辆股份有限公司 | Rail vehicle curve passage capacity testing method |
| CN103698137A (en) * | 2013-11-28 | 2014-04-02 | 南车青岛四方机车车辆股份有限公司 | Loading testing device used in vehicle body traction device |
| CN104990696A (en) * | 2015-06-23 | 2015-10-21 | 中国航空工业集团公司西安飞机设计研究所 | Loading system |
| CN105716851A (en) * | 2016-03-30 | 2016-06-29 | 华南理工大学 | Rotating bending fatigue testing machine for valves |
| CN106468245A (en) * | 2016-10-24 | 2017-03-01 | 浙江运达风电股份有限公司 | Air guide sleeve of wind-driven generator bracing frame assay device |
| CN107703051A (en) * | 2017-11-10 | 2018-02-16 | 中国科学院武汉岩土力学研究所 | The three-dimensional loading device of interaction of soil mass and foundation under a kind of cyclic load |
| CN108489739A (en) * | 2016-02-25 | 2018-09-04 | 潘唯锡 | A kind of vehicle hub alternation tangential stress mechanism for testing |
| CN108871776A (en) * | 2018-07-17 | 2018-11-23 | 西南交通大学 | Bullet train axle non-destructive tests testing stand based on vibratory response |
| CN108956307A (en) * | 2018-08-02 | 2018-12-07 | 河北工业大学 | Repeated bend test hydraulic test system |
| CN109883736A (en) * | 2019-03-26 | 2019-06-14 | 成都西交智众科技有限公司 | A kind of novel axle fatigue test board |
| KR20190123717A (en) * | 2016-10-21 | 2019-11-01 | 엠지-발두네스 | Apparatus and use of the apparatus for testing the shaft and / or the mechanical parts mounted thereon |
| CN110501148A (en) * | 2019-07-25 | 2019-11-26 | 中车青岛四方机车车辆股份有限公司 | The fatigue rig and fatigue test method of gauge-changeable bogie axle |
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| CN103698137A (en) * | 2013-11-28 | 2014-04-02 | 南车青岛四方机车车辆股份有限公司 | Loading testing device used in vehicle body traction device |
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| CN104990696B (en) * | 2015-06-23 | 2017-12-12 | 中国航空工业集团公司西安飞机设计研究所 | A kind of loading system |
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| CN105716851A (en) * | 2016-03-30 | 2016-06-29 | 华南理工大学 | Rotating bending fatigue testing machine for valves |
| CN105716851B (en) * | 2016-03-30 | 2018-06-19 | 华南理工大学 | A kind of valve rotation fatigue bending machine |
| KR20190123717A (en) * | 2016-10-21 | 2019-11-01 | 엠지-발두네스 | Apparatus and use of the apparatus for testing the shaft and / or the mechanical parts mounted thereon |
| KR102445004B1 (en) | 2016-10-21 | 2022-09-19 | 엠지-발두네스 | Apparatus for testing shafts and/or mechanical parts mounted thereon and their use |
| CN110770562B (en) * | 2016-10-21 | 2022-04-01 | 马钢-瓦顿公司 | Device for testing a shaft and/or a mechanical component mounted on a shaft and use of such a device |
| US11226262B2 (en) | 2016-10-21 | 2022-01-18 | Mg-Valdunes | Apparatus for testing a shaft and/or a mechanical part on the shaft and use of such an apparatus |
| CN110770562A (en) * | 2016-10-21 | 2020-02-07 | 马钢-瓦顿公司 | Device for testing a shaft and/or a mechanical component mounted on a shaft and use of such a device |
| CN106468245A (en) * | 2016-10-24 | 2017-03-01 | 浙江运达风电股份有限公司 | Air guide sleeve of wind-driven generator bracing frame assay device |
| CN107703051A (en) * | 2017-11-10 | 2018-02-16 | 中国科学院武汉岩土力学研究所 | The three-dimensional loading device of interaction of soil mass and foundation under a kind of cyclic load |
| CN108871776B (en) * | 2018-07-17 | 2021-06-04 | 西南交通大学 | High-speed train axle damage identification test bed based on vibration response |
| CN108871776A (en) * | 2018-07-17 | 2018-11-23 | 西南交通大学 | Bullet train axle non-destructive tests testing stand based on vibratory response |
| CN108956307A (en) * | 2018-08-02 | 2018-12-07 | 河北工业大学 | Repeated bend test hydraulic test system |
| CN109883736A (en) * | 2019-03-26 | 2019-06-14 | 成都西交智众科技有限公司 | A kind of novel axle fatigue test board |
| CN110501148A (en) * | 2019-07-25 | 2019-11-26 | 中车青岛四方机车车辆股份有限公司 | The fatigue rig and fatigue test method of gauge-changeable bogie axle |
| CN114577628A (en) * | 2022-02-21 | 2022-06-03 | 中信戴卡股份有限公司 | Magnesium alloy wheel high-temperature bending fatigue test equipment |
| CN115266429A (en) * | 2022-07-15 | 2022-11-01 | 哈尔滨工业大学 | Testing device for realizing corrosion environment-bending fatigue coupling effect and testing method thereof |
| CN115266429B (en) * | 2022-07-15 | 2024-05-17 | 哈尔滨工业大学 | Test device and test method for realizing corrosive environment-bending fatigue coupling effect |
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Address after: Chengyang District of Shandong city of Qingdao province Jinhong road 266111 No. 88 Patentee after: CRRC QINGDAO SIFANG CO., LTD. Address before: Jihongtan town Chengyang District Shandong city Qingdao province Jinhong road 266111 No. 88 Patentee before: CSR Qingdao Sifang Locomotive and Rolling Stock Co., Ltd. |