CN102706570B - Simulation test device for pneumatic load of vehicle body - Google Patents
Simulation test device for pneumatic load of vehicle body Download PDFInfo
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- CN102706570B CN102706570B CN201210180296.0A CN201210180296A CN102706570B CN 102706570 B CN102706570 B CN 102706570B CN 201210180296 A CN201210180296 A CN 201210180296A CN 102706570 B CN102706570 B CN 102706570B
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Abstract
The invention provides a simulation test device for a pneumatic load of a vehicle body. The simulation test device is used for a simulation test of the pneumatic load of the vehicle body. The simulation test device consists of a test bed, a fixing mechanism for fixing two ends of the vehicle body to be tested onto the test bed as well as a transverse pressurizing mechanism for applying the pressure on two sides of the vehicle body to be tested, wherein a track for allowing the vehicle body to be tested to move is arranged on the test bed; the transverse pressurizing mechanism comprises a plurality of pressurizing assemblies; each pressurizing assembly consists of an upright post, a wind pressure plate and a hydraulic actuator; the bottom of each upright post is fixedly arranged on the test bed; one end of the hydraulic actuator is hinged with each upright post; and the other end of the hydraulic actuator is hinged with one lateral surface of the wind pressure plate. According to the simulation test device disclosed by the invention, an air pressure load test carried out in the wind pressure plate is replaced by a mechanical device in normal-temperature and normal-pressure environments, and the technical problems that the cost is high and no generality is obtained due to the fact that a pressure container with ultralarge volume is required to be manufactured in the prior art are solved.
Description
Technical field
The present invention relates to a kind of aerodynamic loading simulation test device, be particularly useful for the car body aerodynamic loading simulation test of EMU.
Background technology
Along with rail truck high speed, rail truck particularly EMU vehicle in the time of intersection, can cause the outer larger pressure surge of car, in the time of train frequent intersection on the line, can form impermeability pressure load alternately to train, in order to investigate the impact of aerodynamic loading on motor train unit intensity, conventionally use aerodynamic loading simulation test device to carry out simulation test to EMU.
Prior art adopts a cylindricality tank body conventionally, this tank base is provided with guide rail, by process bogie, car body to be tested is sent in tank body, then by body sealing to be tested in tank body, undertaken car body to carry out pressure test by passing into gas in the tank body to sealing, in this process of the test, require very high to the leakproofness of tank body, and the tank body of the accommodating whole car body of energy is processed great difficulty, existing tank body only can carry out pressure test to part car body (maximum 1/3 car body) conventionally, when test, need to treat between test car body and tank body and be connected by end cap, thereby in a seal cavity, carry out effective pressure test to ensure the body part that is placed in tank interior, because physical dimension and the structure of different model car body there are differences, conventionally need different end caps to seal tank body, versatility is poor, in addition, tank body belongs to pressure vessel, processing cost is high.
Summary of the invention
The invention provides a kind of car body aerodynamic loading simulation test device, for solving defect of the prior art, the versatility of strengthen test device reduces costs simultaneously.
Car body aerodynamic loading simulation test device provided by the invention is by testing table, for car body to be measured two ends being fixed on to the fixed mechanism on this testing table and forming for the horizontal pressing mechanism of exerting pressure to these car body to be measured both sides; Wherein, described testing table is provided with the track moving for car body to be measured; Described horizontal pressing mechanism is made up of multiple pressure-applying units, described pressure-applying unit is made up of column, blast plate and hydraulic actuator, described column bottom is fixed on described testing table, described hydraulic actuator one end and described column are hinged, and one of them side of the other end and described blast plate is hinged.
Car body aerodynamic loading simulation test device of the present invention, before test, need car body to be measured to be fixed on testing table by fixed mechanism, promote blast plate by the action of operation hydraulic actuator and apply power simulation air pressure load test to vehicle body side wall to be measured, the relative prior art of the present invention need to not carried out gas pressure test in the tank body of sealing, without making the pressure container tank body that volume is very large and price is high, only can realize the simulation test of car body being carried out to air pressure load by mechanical hook-up, by any layout of pressure-applying unit is realized to blast plate, the diverse location of vehicle body side wall is exerted pressure, and can be to applying different load on each blast plate, farthest operating condition of test is combined, simulate the impact of actual Wind pressure on motor train unit vehicle body side wall, this test unit can be tested car body under high speed or fully loaded transportation condition, carries out the torture test of cycle loading and random loading at laboratory environment, whether meets its standard-required to test its fatigue strength, assesses its serviceable life.For motor train unit design of new generation provides more reliable data; Do not affect the normal operation of train, test is convenient, the cycle is short, cost is low, is convenient to implement.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention one;
Fig. 2 is the front view of the embodiment of the present invention two;
Fig. 3 is the vertical view of Fig. 2.
Embodiment
Embodiment mono-
As shown in Figure 1, car body aerodynamic loading simulation test device provided by the invention is by testing table 1, for car body to be measured 01 two ends being fixed on to the fixed mechanism 2 on this testing table and forming for the horizontal pressing mechanism 3 of exerting pressure to these car body to be measured both sides; Wherein, laterally pressing mechanism 3 is made up of multiple pressure-applying units, and pressure-applying unit is made up of column 31, blast plate 32 and hydraulic actuator 33, and column 31 bottoms are fixed on testing table 1, hydraulic actuator 33 one end and column 31 are hinged, and one of them side of the other end and blast plate 32 is hinged; Another side of blast plate 32 connects the side wall of car body 01 to be measured.Hydraulic actuator 33 can directly be buied on market, and hydraulic actuator 33 two ends hinged ensured the correctness of imposed load and the permanance of equipment.
When test, by process bogie, car body to be measured is placed on testing table, by fixed mechanism, car body to be measured is fixed on testing table, the fixed mechanism here can be set bolt or other similar securing members; After car body to be measured is fixed on testing table, rotates blast plate its side is connected with the side wall of car body to be measured, operation hydraulic actuator can be exerted pressure and carry out aerodynamic loading simulation test to the side wall of car body to be measured by blast plate.The side that blast plate is connected with car body to be measured and the side wall shape of car body to be measured are suitable.
The embodiment of the present invention need to not carried out gas pressure test with respect to prior art in sealed shell of tank, without making the pressure container tank body that volume is very large and price is high, only can realize the simulation test of car body being carried out to air pressure load by mechanical hook-up, in process of the test, test and record acting force, vehicle body side wall displacement deformation amount, and the test parameters such as strain, for the research of EMU aerodynamic loading provides more authentic and valid test figure.By any layout of pressure-applying unit is realized to blast plate, the diverse location of vehicle body side wall is exerted pressure, and can be to applying different load on each blast plate, farthest operating condition of test is combined, simulate the impact of actual Wind pressure on motor train unit vehicle body side wall; This test unit can be tested car body under high speed or fully loaded transportation condition, carries out the torture test of cycle loading and random loading at laboratory environment, whether meets its standard-required to test its fatigue strength, assesses its serviceable life.For motor train unit design of new generation provides more reliable data; Do not affect the normal operation of train, test is convenient, the cycle is short, cost is low, is convenient to implement.
As the preferred implementation of above-described embodiment, every two pressure-applying units form a pair of, and multipair pressure-applying unit is arranged on testing table along its length.Be convenient to simulate the air pressure load under different operating modes.
Embodiment bis-
As shown in Figure 2 and Figure 3, on the basis of embodiment mono-, above-mentioned test unit also has a longitudinal pressing mechanism, the concrete sealing collar tie beam that adopts of fixed mechanism 2, sealing collar tie beam is be arranged in parallel and is enclosed with the reaction beam 22 that longitudinal beam 21 intersects the shaped as frame that is set to a sealing by two longitudinal beams that be arranged in parallel 21 and two, this longitudinal pressing mechanism is specially the loading beam 4 that two ends are slidably connected with two longitudinal beams respectively, between the reaction beam 22 of loading beam 4 and its near-end, is connected with hydraulic actuator 5.Longitudinal beam 21 is fixed on testing table 1 by multiple supporting bases 23 particularly, between reaction beam 22 two ends and two longitudinal beams 21, is fixedly connected with respectively by securing member.Hydraulic actuator 5 action promotes or stretching loading beams 4, and then realizes the two ends for the treatment of measuring car body 01 and carry out the load simulated test of air pressure.The structure of hydraulic actuator 5, also can directly buying on market as described in embodiment mono-.
Fixed mechanism adopts the sealing collar tie beam form of horizontal positioned, and the longitudinal beam 21 of collar tie beam adopts solid Steel Pipe Design, and it is fixed on testing table 1 by multiple supporting seats 23, and longitudinal beam 21 ends are connected with reaction beam 22.Reaction beam 22 adopts box beam structure, and as the main support point of longitudinal stress, two reaction beam 22 spacing can regulate arbitrarily.Not only can meet the car body of each length, make the power longitudinally loading become internal force digestion simultaneously.Motor train unit for different head dummys is suitable for too.
Finally it should be noted that: above each embodiment, only in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or some or all of technical characterictic is wherein equal to replacement; And these amendments or replacement do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (4)
1. a car body aerodynamic loading simulation test device, is characterized in that, this device is by testing table, for car body to be measured two ends being fixed on to the fixed mechanism on this testing table and forming for the horizontal pressing mechanism of exerting pressure to these car body to be measured both sides; Wherein, described testing table is provided with the track moving for car body to be measured; Described horizontal pressing mechanism is made up of multiple pressure-applying units, described pressure-applying unit is made up of column, blast plate and hydraulic actuator, described column bottom is fixed on described testing table, described hydraulic actuator one end and described column are hinged, and one of them side of the other end and described blast plate is hinged; Another side of described blast plate is used for connecting the side wall of described car body to be measured, and suitable with the side wall shape of described car body to be measured.
2. car body aerodynamic loading simulation test device according to claim 1, is characterized in that, every two described pressure-applying units form a pair of, and multipair described pressure-applying unit is arranged on described testing table along its length.
3. car body aerodynamic loading simulation test device according to claim 1 and 2, it is characterized in that, described test unit also has a longitudinal pressing mechanism, described fixed mechanism specifically adopts sealing collar tie beam, described sealing collar tie beam is be arranged in parallel and is enclosed with the reaction beam that described longitudinal beam intersects the shaped as frame that is set to a sealing by two longitudinal beams that be arranged in parallel and two, this longitudinal pressing mechanism is specially the loading beam that two ends are slidably connected with two described longitudinal beams respectively, between the described reaction beam of described loading beam and its near-end, is connected with at least one hydraulic actuator.
4. car body aerodynamic loading simulation test device according to claim 3, is characterized in that, described longitudinal beam is fixed on described testing table by multiple supporting bases, between described reaction beam two ends and two longitudinal beams, is fixedly connected with respectively by securing member.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210180296.0A CN102706570B (en) | 2012-06-04 | 2012-06-04 | Simulation test device for pneumatic load of vehicle body |
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| CN201210180296.0A CN102706570B (en) | 2012-06-04 | 2012-06-04 | Simulation test device for pneumatic load of vehicle body |
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| CN102706570A CN102706570A (en) | 2012-10-03 |
| CN102706570B true CN102706570B (en) | 2014-09-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674580B (en) * | 2013-11-27 | 2015-12-30 | 南车青岛四方机车车辆股份有限公司 | Vehicle body side wall load charger and load loading method |
| CN103674581B (en) * | 2013-11-29 | 2015-12-30 | 南车青岛四方机车车辆股份有限公司 | The experiment loading unit of fuel motor train unit under-train fuel tank |
| CN103837420B (en) * | 2014-03-14 | 2016-06-29 | 唐山轨道客车有限责任公司 | Pulse fatigue testing machine fatigue experimental device and pulse fatigue testing machine |
| CN104215466B (en) * | 2014-09-22 | 2018-02-06 | 中国铁路总公司 | A kind of test method of train body chassis fatigue strength |
| CN106769117B (en) * | 2016-12-09 | 2019-06-04 | 中车齐齐哈尔车辆有限公司 | The experimental bench of intact stability and the excitation method of intact stability |
| CN109100163A (en) * | 2018-09-11 | 2018-12-28 | 西南交通大学 | A kind of configuration in railroad truck dynamic debugging testing stand |
| CN109141947A (en) * | 2018-10-29 | 2019-01-04 | 中车长春轨道客车股份有限公司 | A kind of vehicle static strength test laterally load fexible unit |
| CN109558658A (en) * | 2018-11-20 | 2019-04-02 | 中国铁路总公司 | High-speed EMUs aerodynamic loading composes preparation method and device |
| CN110793791A (en) * | 2019-11-19 | 2020-02-14 | 中车株洲电力机车有限公司 | Driver's cab side collision-resistant test device |
| CN111198091B (en) * | 2020-01-15 | 2021-08-10 | 石家庄铁道大学 | Simulation device for researching distribution rule of aerodynamic loads in different cracks of tunnel lining |
| CN113607423A (en) * | 2021-07-16 | 2021-11-05 | 神龙汽车有限公司 | Aircraft hood assembly endurance test method based on aerodynamic fatigue load |
| CN114577430B (en) * | 2022-05-05 | 2022-08-02 | 常州市新创智能科技有限公司 | Pneumatic load test tool and test method thereof |
| CN115060450B (en) * | 2022-05-18 | 2024-09-17 | 武汉理工大学 | Large-scale mail wheel chimney limit wind pressure load loading device |
| CN116519340B (en) * | 2023-04-21 | 2023-12-12 | 石家庄铁道大学 | Train operation performance test bed under aerodynamic force effect |
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| CN101699247A (en) * | 2009-11-10 | 2010-04-28 | 青岛四方车辆研究所有限公司 | Comprehensive test bed for automobile body |
| CN101813550A (en) * | 2009-11-05 | 2010-08-25 | 吉林大学 | Integrated dynamic testboard of parameter of bogie of railway car |
| CN101982752A (en) * | 2010-10-25 | 2011-03-02 | 中南大学 | Test method by loading alternating aerodynamic load outside train body of high-speed train |
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| JPS57147029A (en) * | 1981-03-06 | 1982-09-10 | Japanese National Railways<Jnr> | Testing equipment for truck for vehicle |
| JP4758733B2 (en) * | 2005-11-15 | 2011-08-31 | 公益財団法人鉄道総合技術研究所 | Tunnel traveling experiment apparatus and tunnel traveling experiment method |
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| CN101813550A (en) * | 2009-11-05 | 2010-08-25 | 吉林大学 | Integrated dynamic testboard of parameter of bogie of railway car |
| CN101699247A (en) * | 2009-11-10 | 2010-04-28 | 青岛四方车辆研究所有限公司 | Comprehensive test bed for automobile body |
| CN101982752A (en) * | 2010-10-25 | 2011-03-02 | 中南大学 | Test method by loading alternating aerodynamic load outside train body of high-speed train |
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Address after: 063035 Hebei province Fengrun District Tangshan City Road No. 3 factory Patentee after: CRRC TANGSHAN CO., LTD. Address before: 063035 Hebei province Fengrun District Tangshan City Road No. 3 factory Patentee before: Tangshan Railway Carriage Co., Ltd. |