CN202994487U - Train body strength fatigue and airtightness fatigue testing device - Google Patents
Train body strength fatigue and airtightness fatigue testing device Download PDFInfo
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- CN202994487U CN202994487U CN 201320010754 CN201320010754U CN202994487U CN 202994487 U CN202994487 U CN 202994487U CN 201320010754 CN201320010754 CN 201320010754 CN 201320010754 U CN201320010754 U CN 201320010754U CN 202994487 U CN202994487 U CN 202994487U
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Abstract
A vehicle body strength fatigue and airtightness fatigue testing device is disclosed, comprising a train body of a train for a test, a lengthways loading device, a vertical loading device, and multiple excitation devices which are mounted below the train body, wherein the excitation devices are six-degree-of-freedom excitation devices; all of the six-degree-of-freedom excitation devices, the lengthways loading device, and the vertical loading device are mounted in a ground pit through a vibration isolation device; and a air vent hole of the train body is connected with an airtight device. The vibration isolation device is specifically formed by connecting an inner bottom part of a rectangular basin-shaped base seat with base plates of the six-degree-of-freedom excitation devices through a T-shaped guide rail, wherein the lengthways loading device and the vertical loading device are fixed on upper surfaces of side edges of the base seat, side edges of the base seat are connected with walls of the ground pit through buffering rubber stacks, and lower surfaces of the side edges of the base seat are connected with steps of the ground pit through air springs. The testing device is characterized by realization of a strength fatigue test and realization a full size train body airtightness fatigue test, low testing cost, high testing efficiency, real and reliable test results, and very small effects which are exterted on surrounding environment in test processes.
Description
Technical field
The utility model relates to the testing table of rail vehicles car body agent structure fatigue strength and impermeability load fatigue.
Background technology
Transportation by railroad is to the development of high-speed overload, make the vibration aggravation of train operation, the Service Environment of each parts worsens, and the structural strength problem that is exposed to bogie, wheel shaft and car body etc. increases gradually, particularly after the desired light in structure of bullet train quantizes, the structural strength problem will be more outstanding.
And along with the rail truck high speed, rail truck all can cause the outer larger air pressure fluctuation of car when particularly the motor train unit vehicle moves when meeting or in the tunnel.When train frequent meeting or can form impermeability pressure load alternately to train by the tunnel on the line.Generally speaking, vehicle is larger than the pressure wave that two train crossings on open-wire line produce by the pressure surge that the tunnel produces.In order to investigate the airtight load car body of car body fatigue strength, set up the airtight fatigue test board of car body and also be very important.
Existing car body agent structure intensity fatigue can make a strength test to car body by vertical charger, vertical loading device; But because the base of testing table directly is fixed on large ground, the dither that produces during test will have destructive effects near building, and near resident life is produced severe jamming and impact.
And existing tightness test platform is to set up a cylinder of growing up that can increase and decrease the sealing of pressure, and the bottom is provided with exclusive guideway, by process bogie, tested car body is sent in the cylinder of growing up, to the steel structure of car body outside carrying out the supercharging decompression test.But due to the restriction of the cylinder volume of growing up and the restriction of pressue device power, only can be to only testing for the special test car body of actual car body 1/3 length.
Equally, being grown up the airtight fatigue test board of restriction of cylinder volume can't the installation strength charger.Therefore.Intensity torture test at present and airtight torture test can't be completed on same testing table.
The utility model content
The purpose of this utility model is to provide a kind of car body strength fatigue and airtight fatigue rig, this testing equipment can carry out the intensity torture test can complete again the airtight torture test of full-scale car body, experimentation cost is low, and test efficiency is high, and test findings is more true and reliable; Can be suitable for the vehicle of various length and gauge; And very little to surrounding environment influence during test.
the utility model realizes that the technical scheme that its goal of the invention adopts is, a kind of car body strength fatigue and airtight fatigue rig, comprise the test car body of train, vertical charger of car body one end, the vertical loading device that is connected with floor in car body, be arranged on a plurality of exciting devices of car body below, with vertical charger, vertical loading device, the hydraulic system that exciting device is connected, it is characterized in that: described exciting device is the six degree of freedom exciting device, described six degree of freedom exciting device, vertical charger, vertical loading device all is installed in melt pit by isolation mounting, described car body is connected with gas check, wherein:
The concrete formation of described isolation mounting is: the base inner bottom part of rectangle peviform is connected with the base plate of six degree of freedom exciting device by T-shaped guide rail, and the upper surface on the side edge of base is fixed with vertical charger and vertical loading device; The side of base along and pit wall between be provided with the yielding rubber heap, the lower surface on the side edge of base is connected with the step of melt pit by air spring;
The concrete formation of described gas check is: the air hole of car body is connected with compressor through tracheal pressure, high-low pressure gas-holder successively.
The course of work of the present utility model and principle are:
The experiment on fatigue properties of car body:
Hydraulic system drives vertical loading device and applies downward vertical load to car body, vertically charger applies longitudinal loading to car body, can also apply vertical load upwards to car body by the six degree of freedom exciting device, carry out the cycle long time loading of cyclic force by hydraulic actuator, and follow-on test, record are carried out in load and the distortion of car body, thereby complete the experiment on fatigue properties of car body.
Due to vertical loading device be fixed in base side along upper surface and car body is to be fixed on the bottom of base by the six degree of freedom charger, therefore the car body on vertical loading device and base and base consists of the stressed system of sealing, and base is to be fixed on the melt pit step by air spring is vertical, so the load during Plumb load can not be delivered to melt pit and earth's surface beyond base as internal force; What produce when load is inhomogeneous rocks also and can be absorbed by air spring.And when vertically loading equally due to vertical charger be fixed in base side along upper surface and car body is to be fixed on the bottom of base by the six degree of freedom charger, therefore vertically the car body on charger and base and base also consists of the stressed system of sealing; Therefore vertically and base is to be connected on the wall of melt pit by lateral cushioning device side direction, and when loading, load can not be delivered to melt pit and earth's surface beyond base as internal force yet; Rocking of producing when load is inhomogeneous also can be cushioned the rubber metal pad absorption.
Airtight experiment on fatigue properties:
The sealing car body, the air hole of compressor by high-low pressure gas-holder, tracheal pressure and car body to car body fill, venting is so that car body inside reaches the air pressure change of setting, carrying out long-time air pressure change loads, and the gaseous tension in car body and car body distortion are carried out follow-on test, record, can carry out the airtight experiment on fatigue properties of train body.
The test of car body comfort level:
The human trial model is installed in train body, can apply to car body the power of six direction by the six degree of freedom exciting device below train body, make car body produce motion on six direction, come continuous detecting car body comfort level index by the human trial model, thereby complete the test of car body comfort level.
When testing due to the car body comfort level, the load of exciting is less to be affected less on melt pit and near ground.
Above three kinds of processs of the test can be carried out separately, also can any two or three carry out simultaneously.
Compared with prior art, the beneficial effects of the utility model are:
One, on a testing equipment, both can carry out the car body strength torture test, can carry out again the test of the airtight torture test of car body and car body comfort level.Than simple car body strength fatigue rig and simple airtight fatigue rig, experimentation cost is low, tests more conveniently, and test efficiency is high.And two kinds or three kinds of tests can be carried out simultaneously, and are more approaching with true train ruuning situation.The test figure that obtains is truer, for the design of train and maintenance provide test figure more reliably.
Two, this testing equipment combines vertical and vertical dynamic load, vertically not only can realize the downward loading of car body by vertical loading device, also can realize applying loading upwards to car body by the six degree of freedom exciting device.Can simulate more really the train operation stressing conditions, also make test figure more true, reliable.
Three, this testing equipment by base and be arranged on vertical loading device above base, vertically charger consists of vertical and vertical loading system of sealing, the load of loading as internal force can not act on melt pit and near ground; Rock by the yielding rubber heap of the air spring of base bottom and periphery and absorb and load the inhomogeneous system that may cause.Thereby guaranteed that buildings and resident living environment around the test site are unaffected; Simultaneously, pilot region is not protected too to be affected by external environment, makes test figure more genuine and believable.
Four, during tightness test, the air hole of train is connected with gas check, realized the closed air changing environment of train inside, encase than separately adding the cylinder of growing up the air pressure change environment that car body forms sealing from the outside: the utility model structure is greatly simplified, and it implements more convenient easy.And no longer greatly enhanced the restriction of cylinder volume, can carry out tightness test to full-scale whole train body, more approaching with the train truth, test findings is more true, reliable.
The concrete formation of above-mentioned six degree of freedom exciting device is: top board is fixedly connected with car body floor, be connected with three vertical pair of ball pivot hydraulic actuators between base plate and top board, stand at the rear portion of base plate squab panel, be connected with two vertically two ball pivot hydraulic actuators between the top of squab panel and the side of top board, stand on the right side of base plate right web plate, the below, left side of top board is provided with left gusset, is connected with laterally two ball pivot hydraulic actuators between right web plate and left gusset.
Such six degree of freedom exciting device can namely facilitate the motion that accurately realizes reliably again dynamic three directions (vertical, laterally and vertically) and the rotation of three directions.
The concrete structure of above-mentioned vertical loading device is: vertical loading device is the gantry type loading structure, a plurality of crossbeams pass respectively window corresponding to car body, the crossbeam two ends of stretching out window are connected with two columns, the base side that two columns are installed on earthquake isolating equipment is along upper surface, and the middle part of crossbeam is connected by two vertical pair ball pivot hydraulic loaded actuator and car body interior floor.
Such vertical loading device can be realized the loading to floor each position in car body easily.And the reacting force of Plumb load comes from base, makes the power of Plumb load can not act on melt pit.And vertical loading device uses hydraulic actuator can carry out the circulation dynamic load of load, thereby simulates more really the real circuit ruuning situation of train.
The concrete structure of above-mentioned vertical charger is: the base side that two longitudinal beams are fixed in earthquake isolating equipment by supporting seat is connected with the reaction beam of box along upper surface between the end of two longitudinal beams; Be connected with vertically two ball pivot hydraulic loaded actuator between the reaction beam of car body one end and car body.
So vertical charger of collar tie beam formula makes longitudinal loading become internal force load and digests and assimilates.Both reduce the vibration effect to ground, need not again to arrange in addition bulky counter force wall.
The concrete structure that is connected with the reaction beam of box between the end of two above-mentioned longitudinal beams is: the end of reaction beam is hinged semicircular upper and lower clasp, and the other end of upper and lower clasp is threaded.The inside surface of upper and lower clasp is provided with the internal thread that coordinates with the longitudinal beam external thread.
Such clasp connects the position that makes reaction beam can be regulated arbitrarily on longitudinal beam; And can be good at being fixed on longitudinal beam.Make the utility model can easily be used for the test of all lengths, window spacing car body.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Description of drawings
Fig. 1 is the plan structure schematic diagram of the utility model embodiment.
Fig. 2 is the left TV structure schematic diagram at the utility model embodiment (position on the ground).
Fig. 3 is that the master of the utility model embodiment looks and analyses and observe (A-A of Fig. 1 analyses and observe) structure for amplifying schematic diagram.
Fig. 4 is the side-looking structural representation of the six degree of freedom exciting device in the utility model embodiment.
Embodiment
Embodiment
Fig. 1～3 illustrate, a kind of embodiment of this utility model is: a kind of car body strength fatigue and airtight fatigue rig, comprise that test is with vertical charger 2 of the car body 1 of train, car body 1 one ends, the vertical loading device 3 that is connected with car body 1 interior floor, a plurality of exciting devices (being generally more than three or three) that are arranged on car body 1 below, the hydraulic system that is connected with vertical charger 2, vertical loading device 3, exciting device; Described exciting device is six degree of freedom exciting device 4, and described six degree of freedom exciting device 4, vertical charger 2, vertical loading device 3 all are installed in melt pit 10 by isolation mounting, and described car body 1 is connected with gas check.Wherein:
The concrete formation of described isolation mounting is: the base 7c inner bottom part of rectangle peviform is connected with the base plate 4a of six degree of freedom exciting device 4 by T-shaped guide rail 9, and the upper surface on the side edge of base 7c is fixed with vertical charger 2 and vertical loading device 3; The side of base 7c along and melt pit 10 walls between be provided with yielding rubber heap 7b, the lower surface on the side edge of base 7c is connected with the step of melt pit 10 by air spring 7a;
The concrete formation of described gas check is: the air hole 1a of car body 1 is connected with compressor 5a through tracheal pressure 5c, high-low pressure gas-holder 5b successively.
Fig. 3,4 illustrates, the concrete formation of the six degree of freedom exciting device 4 that this is routine is: top board 4b is fixedly connected with car body 1 floor, be connected with 3 vertical couple ball pivot hydraulic actuator 4c between base plate 4a and top board 4b, stand at the rear portion of base plate 4a squab panel 4d, be connected with 3 vertically two ball pivot hydraulic actuator 4c between the side of the top of squab panel 4d and top board 4b, stand on the right side of base plate 4a right web plate 4e, the below, left side of top board 4b is provided with left gusset 4f, is connected with laterally two ball pivot hydraulic actuator 4c between right web plate 4e and left gusset 4f.
Fig. 1-3 also illustrate, the concrete structure of this routine vertical loading device 3 is: vertical loading device 3 is gantry type loading structures, crossbeam 3b passes the window 1b of car body 1, the crossbeam 3b two ends of stretching out window 1b are connected with the side of two vertical column 3a, the base 4a side that two vertical column 3a are installed on earthquake isolating equipment is along upper surface, and the middle part of crossbeam 3b is connected by 2 vertical couple ball pivot hydraulic loaded actuator 3c and car body 1 interior floor.
The concrete structure of vertical charger 2 of this example is: the base 7c side that two longitudinal beam 2a of the collar tie beam that solid steel pipe consists of are fixed in earthquake isolating equipment by supporting seat 2b is connected with the reaction beam 2c of box along upper surface between the end of two longitudinal beam 2a; Be connected with vertically two ball pivot hydraulic loaded actuator 2d between reaction beam 2c and car body 1.
The concrete structure that is connected with the reaction beam 2c of box between the end of two longitudinal beam 2a of this example is: the end of reaction beam 2c is hinged semicircular upper and lower clasp, and the other end of upper and lower clasp is threaded.The inside surface of upper and lower clasp is provided with the internal thread that coordinates with longitudinal beam 2a external thread.
Claims (5)
1. the tired and airtight fatigue rig of a car body strength, comprise the test car body (1) of train, vertical charger (2) of car body (1) one end, the vertical loading device (3) that is connected with car body (1) interior floor, be arranged on a plurality of exciting devices of car body (1) below, with vertical charger (2), vertical loading device (3), the hydraulic system that exciting device is connected, it is characterized in that: described exciting device is six degree of freedom exciting device (4), described six degree of freedom exciting device (4), vertical charger (2), vertical loading device (3) all is installed in melt pit (10) by isolation mounting, described car body (1) is connected with gas check, wherein:
The concrete formation of described isolation mounting is: the base of rectangle peviform (7c) inner bottom part is connected with the base plate (4a) of six degree of freedom exciting device (4) by T-shaped guide rail (9), and the upper surface on the side edge of base (7c) is fixed with vertical charger (2) and vertical loading device (3); The side of base (7c) along and melt pit (10) wall between be provided with yielding rubber heap (7b), the lower surface on the side edge of base (7c) is connected with the step of melt pit (10) by air spring (7a);
The concrete formation of described gas check is: the air hole (1a) of car body (1) is connected with compressor (5a) through tracheal pressure (5c), high-low pressure gas-holder (5b) successively.
2. the tired and airtight fatigue rig of a kind of car body strength according to claim 1, it is characterized in that: the concrete formation of described six degree of freedom exciting device (4) is: top board (4b) is fixedly connected with car body (1) floor, be connected with three vertical pair ball pivot hydraulic actuator (4c) between base plate (4a) and top board (4b), stand at the rear portion of base plate (4a) squab panel (4d), be connected with two vertically two ball pivot hydraulic actuators (4g) between the side of the top of squab panel (4d) and top board (4b), stand on the right side of base plate (4a) right web plate (4e), the below, left side of top board (4b) is provided with left gusset (4f), be connected with laterally two ball pivot hydraulic actuators (4h) between right web plate (4e) and left gusset (4f).
3. the tired and airtight fatigue rig of a kind of car body strength according to claim 1, it is characterized in that: the concrete structure of described vertical loading device (3) is: vertical loading device (3) is the gantry type loading structure, a plurality of crossbeams (3b) pass respectively window (1b) corresponding to car body (1), crossbeam (3b) two ends of stretching out window (1b) are connected with two columns (3a), two columns (3a) are installed on base (7c) side of earthquake isolating equipment along upper surface, the floor that the middle part of crossbeam (3b) is passed through in two vertical pair ball pivot hydraulic loaded actuator (3c) and car body (1) is connected.
4. the tired and airtight fatigue rig of a kind of car body strength according to claim 1, it is characterized in that: the concrete structure of described vertical charger (2) is: base (7c) side that two longitudinal beams (2a) are fixed in earthquake isolating equipment by supporting seat (2b) is connected with the reaction beam (2c) of box along upper surface between the end of two longitudinal beams (2a); Be connected with vertically two ball pivot hydraulic loaded actuator (2d) between the reaction beam (2c) of car body (1) one end and car body (1).
5. the tired and airtight fatigue rig of a kind of car body strength according to claim 4, it is characterized in that: the concrete structure that is connected with the reaction beam (2c) of box between the end of described two longitudinal beams (2a) is: the end of reaction beam (2c) is hinged semicircular upper and lower clasp, and the other end of upper and lower clasp is threaded; The inside surface of upper and lower clasp is provided with the internal thread that coordinates with longitudinal beam (2a) external thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320010754 CN202994487U (en) | 2013-01-09 | 2013-01-09 | Train body strength fatigue and airtightness fatigue testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320010754 CN202994487U (en) | 2013-01-09 | 2013-01-09 | Train body strength fatigue and airtightness fatigue testing device |
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| CN202994487U true CN202994487U (en) | 2013-06-12 |
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| CN 201320010754 Withdrawn - After Issue CN202994487U (en) | 2013-01-09 | 2013-01-09 | Train body strength fatigue and airtightness fatigue testing device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103091117A (en) * | 2013-01-09 | 2013-05-08 | 西南交通大学 | Car body intensity fatigue and airtight fatigue test stand |
| CN103674585A (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 operation performance testing device |
| CN103698139A (en) * | 2013-12-03 | 2014-04-02 | 南车青岛四方机车车辆股份有限公司 | Testing method of railway vehicle flexibility coefficient |
| CN103728143A (en) * | 2014-01-18 | 2014-04-16 | 淄博水环真空泵厂有限公司 | High-speed train load fatigue and comfort testing system and testing method |
| 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 |
-
2013
- 2013-01-09 CN CN 201320010754 patent/CN202994487U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103091117A (en) * | 2013-01-09 | 2013-05-08 | 西南交通大学 | Car body intensity fatigue and airtight fatigue test stand |
| CN103091117B (en) * | 2013-01-09 | 2015-08-05 | 西南交通大学 | A kind of car body strength fatigue and airtight fatigue test board |
| CN103674585A (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 operation performance testing device |
| CN103698139A (en) * | 2013-12-03 | 2014-04-02 | 南车青岛四方机车车辆股份有限公司 | Testing method of railway vehicle flexibility coefficient |
| CN103674585B (en) * | 2013-12-03 | 2016-09-07 | 中车青岛四方机车车辆股份有限公司 | Rail vehicle runnability test device |
| CN103728143A (en) * | 2014-01-18 | 2014-04-16 | 淄博水环真空泵厂有限公司 | High-speed train load fatigue and comfort testing system and testing method |
| 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 |
| 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 |
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Granted publication date: 20130612 Effective date of abandoning: 20150805 |
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