CN102358319A - Energy-absorbing anticreeper of urban railway train - Google Patents
Energy-absorbing anticreeper of urban railway train Download PDFInfo
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- CN102358319A CN102358319A CN2011102823300A CN201110282330A CN102358319A CN 102358319 A CN102358319 A CN 102358319A CN 2011102823300 A CN2011102823300 A CN 2011102823300A CN 201110282330 A CN201110282330 A CN 201110282330A CN 102358319 A CN102358319 A CN 102358319A
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Abstract
The invention belongs to the safety research field of railway traffic vehicles, and particularly relates to an energy-absorbing anticreeper of an urban railway train. The energy-absorbing anticreeper of the urban railway train is composed of an anti-creeping toothed plate, a front baffle, a rear baffle, a foamed aluminum filling pipe, a cylindrical box body wall and a base. In the train collision (face-to-face collision or rear-end collision) accidents, large kinetic energy of the vehicle during the collision is consumed by the ordered large plastic deformation of a box body; and meanwhile, longitudinal collision force is reduced, and retarded velocity is lowered, thus the personnel safety of passengers, drivers and conductors are protected. From the two aspects of the scientific management of impact kinetic energy and the safety protection of passengers, the invention provides a novel energy-adsorbing device. The energy-absorbing anticreeper has the advantages of simple structure, big energy adsorption capacity, stable performances and good protection action on the passengers.
Description
Technical field
The invention belongs to track traffic passive security technical field, be specifically related to a kind of city railway train energy-absorbing anti-creeper.
Background technology
The train collision case is to cause the most important reason of passenger's heavy casualties, therefore how to improve the safety of train operation, reduces driver and the passenger injures and deaths in accident as far as possible, becomes people's question of common concern.Thereby the passive security technology of vehicle has become vehicle safety design-calculated important technology.The passive security technology absorbs the bump huge energy that moment produced in an orderly manner through the METHOD FOR LARGE DEFORMATION ELASTOPLASTIC of energy absorption device and car body local structure, thereby when the collision happens accident, protects occupant safety effectively, makes injury be reduced to bottom line.
In the passive security protective system of train, the energy absorption device of a car is protection occupant's the first road safety curtain.Now; Urban railway transit train head car generally is equipped with a kind of anti-creeper; Its function is that vehicle avoids climbing car with the protection occupant safety through the mutual interlock of a pair of anti-climbing tooth when the head-on crash accident takes place; Wherein have in the part car in addition with the anti-creeper of energy-absorbing function, also have the anti-creeper of energy-absorbing function using in the vehicle of the domestic foreign capital affiliate of China, but its collision performance and the requirements and potentialities of further raising is arranged with the harmony of strength characteristics.
The history of track traffic shows; When train goes in the same direction or in the same way during the rear-end impact accident; The coupler draft gear capacity of general train is very limited; Be difficult to absorb the collision energy that is higher than relative velocity more than 10 kilometers/hour, thereby at headstock or end to end rigid collision will take place and produce very big transient state impact force and damage body construction, the abrupt deceleration that causes simultaneously can cause certain damage to driver and conductor's on the car brain again.Adopt the energy-absorbing anti-creeper then can avoid or slow down the injury of collision through absorbing impact kinetic energy to the occupant.
Summary of the invention
The object of the present invention is to provide a kind of city railway train energy-absorbing anti-creeper; This device is when bigger impact loading takes place in vehicle; Thereby will consume bigger bump kinetic energy through orderly, the stable METHOD FOR LARGE DEFORMATION ELASTOPLASTIC of self structure; And have good collision performance, thereby can protect occupant's personal safety better.
The city railway train energy-absorbing anti-creeper that the present invention proposes; Constitute by anti-creep tooth plate 1, cowl board 2, rear bulkhead 3, foam-filled pipe 4, the first conquassation control punch 5-1, the second conquassation control punch 5-2, casing 6 and base 7; Casing 6 is the tube structure of hollow; The both sides, front and back of casing 6 are respectively equipped with anti-creep tooth plate 1 and base 2, vertically are furnished with cowl board 2 and rear bulkhead 3 in the casing 6, and casing 6 is separated into three less box type constructions; Area of space between anti-creep tooth plate 1 and the cowl board 2 is the first box type construction 6-1; Area of space between cowl board 2 and the rear bulkhead 3 is the second box type construction 6-2, and the area of space between rear bulkhead 3 and the base 7 is the 3rd box type construction 6-3, the equal in length of the first box type construction 6-1 and the second box type construction 6-2; And it is shorter with respect to the 3rd box type construction 6-3 length; The left and right sides of the barrel of the first box type construction 6-1 and the second box type construction 6-2 is respectively equipped with the first conquassation control punch 5-1 and the second conquassation control punch 5-2, and the 3rd box type construction 6-3 lateral arrangement has foam-filled pipe 4, and base plate 7 is fixed on the car body underframe end construction.
Among the present invention, the conquassation control punch 5-1 in the first box type construction 6-1 is long slightly than the hole length of the conquassation control punch 5-2 in the second box type construction 6-2.
Among the present invention, shape and the size of conquassation control punch system through confirming behind the optimal design.The first conquassation control punch 5-1 and the second conquassation control punch 5-2 are the form that rectangle adds two semicircles.But the length dimension of the first conquassation control punch 5-1 is longer, and this is because of controlling the order design-calculated that conquassation at first takes place the first box cavity.Two apertures and length are based on the energy-absorbing anti-creeper and must satisfy: (1) under the effective working load of coupler draft gear statical stress less than the static strength permissible stress to keep Stability Analysis of Structures; (2) dual complicatedly require to carry out down coordination optimization design acquisition when what coupler draft gear lost efficacy that the METHOD FOR LARGE DEFORMATION ELASTOPLASTIC energy-absorbing must take place greater than material yield stress back stress.Design utilization optimizing Design Software OptiStruct; Under the operating mode of two kinds of different stress constraints that are directed against the anti-creeper designing requirement; Slotted eye is carried out having obtained slotted eye aperture and length optimum dimension after the size and dimension optimization; Thereby the design anti-creeper can be satisfied in the not static strength requirement under the failure conditions of hitch, thereby and the orderly successively plastic deformation realization collapse energy-absorption of anti-creeper box type construction generation can be induced in the back after coupler buffering device lost efficacy function takes place when collision.
Among the present invention, said foam-filled pipe 4 adopts foamed aluminum-core to fill aluminum pipe, and it has bigger guarantee meaning to the stability of structure collapse energy-absorption distortion.
The principal feature of apparatus of the present invention:
1. from protecting the theory of occupant safety; Adopt (mostly domestic be foreign capitals or joint venture) existing same device different structural forms with both at home and abroad; It is high to have conquassation stability, and bigger than energy-absorbing, good to occupant safety protective value characteristics are through emulation; The impact resistance energy absorption that shows apparatus of the present invention is bigger, the reasonable safety of vehicle collision performance.
2. should, coupler and draft gear work after losing efficacy in view of the energy-absorbing anti-creeper; So conquassation triggers power and should be controlled in the suitable scope; For guaranteeing that the anti-creep function also needs certain intensity requirements, in the clear and definite domestic situation of still not having corresponding standard, the present invention is with reference to European British Standard, Automobile Series simultaneously; Through design optimizing the structure of anti-creeper is optimized, realized that the science between its collision energy-absorbing performance and the strength characteristics is coordinated.
Technical characteristic of the present invention is:
1. take the mode of classification energy-absorbing to make structural distortion control in order;
2. use the novel foam metal as partially filled material, improved the conquassation stability of structure.
3. use finite element and optimization technique, through the optimal design of conquassation control punch having been guaranteed design the static strength requirement of anti-creeper and the science harmony of crush characteristics.
4. through the transient state dynamics simulation, novel energy-absorbing anti-creeper collision super performance and occupant safety protective thereof have been verified.
Expected Results of the present invention:
Computer Simulation shows, is not more than at a track train car head-on crash relative velocity under 25 kilometers/hour the situation, and the energy-absorbing anti-creeper can be protected the safety requirements of train occupant in collision case effectively:
1. absorb and impact bigger bump kinetic energy, total energy absorption of an a pair of anti-creeper of car can reach about 400KJ;
2. simulation result shows, this anti-creeper is good to occupant's bump accident security protection, and distortion is stable, and mean deceleration is less than 5g, and the middle occupant's head injury criteria value that proposes meets international standards.
Energy-absorbing anti-creeper structure of the present invention is shown in accompanying drawing 1, and this energy-absorbing anti-creeper is by three closed boxes, and wherein the first two tanks body is totally similar, is hollow structure, and difference is in the aperture of sidewall different with length.Vertically settled an aluminum pipe of filling the foamed aluminium core in the casing afterwards.When bumping, the conquassation plastic deformation through these two types of casings constitutes two main structure energy-absorbing stages successively, to absorb the kinetic energy that produces under the different collision velocitys.
Working process of the present invention is following:
1. between the train of assembling rail clamps when bumping the pipeline of longitudinal impact power see accompanying drawing 2.; Through the anti-creep tooth plate; Longitudinal force is at first with first box type construction 6-1 and the second box type construction 6-2 of serial action to casing 6; The size that depends on longitudinal force consumes a certain amount of impact kinetic energy thereby well-regulated plastic deformation will take place two small box successively.
2. have benefited from the present invention and use the optimization technique design-calculated first conquassation control punch 5-1 and the second conquassation control punch 5-2, make the initial conquassation power of anti-creeper be controlled at certain reasonable range, and guaranteed that conquassation takes place by predetermined order and desirable conquassation pattern.
3. when bigger impact force action; Conquassation will take place in the 3rd box type construction 6-3; Because the present invention has designed a tube filled with foam aluminum that vertically is placed in central authorities; Thereby to keeping conquassation to stablize and improve the collision safety performance and play good result, this filling pipe also can play the effect that increases energy-absorbing simultaneously in addition.
4. simulation result shows, through triphasic conquassation distortion, in limited forced stroke, it is about 200KJ. that single energy-absorbing anti-creeper absorbs the energy theory maxim.
Description of drawings
Fig. 1 is an apparatus structure block diagram of the present invention.
Fig. 2 is this energy-absorbing anti-creeper working diagram.
Fig. 3 is anti-creeper energy-absorbing simulation curve figure.
Fig. 4 is anti-creeper impact force-time simulation curve figure.
Label among the figure: 1 is the anti-creep tooth plate, and 2 is cowl board, and 3 is rear bulkhead; 4 is foam-filled pipe, and 5 are the conquassation control punch, and 5-1 is the first conquassation control punch; 5-2 is the second conquassation control punch, and 6 is casing, and 6-1 is first box type construction; 6-2 is second box type construction, and 6-3 is the 3rd box type construction, and 7 is base.
The specific embodiment
Combine accompanying drawing to further specify the present invention through embodiment below.
Embodiment 1: this energy-absorbing anti-creeper structural representation is shown in accompanying drawing 1.Its structure is made up of anti-creep tooth plate 1, cowl board 2, rear bulkhead 3, foam-filled pipe 4, conquassation control punch 5, casing 6 and base 7.Casing 6 is divided into three less box type constructions of two kinds of length by cowl board 2 and rear bulkhead 3; The equal in length of two the shorter box type constructions in front; These two little box type constructions each side have identic conquassation control punch 5-1 and 5-2, and wherein the hole 5-1 of preceding box type construction barrel is longer.Rear bulkhead 3 and 7 of bases in the 3rd box type construction are vertically being settled a foam-filled pipe 4 of being processed by foamed aluminium core filling aluminum pipe, and base 7 usefulness bolts are connected with the car body underframe.Wherein anti-creep tooth plate 1 is used to prevent the climb car accident of vehicle when longitudinal impact takes place; The agent structure that forms with integral solder such as casing 6 and base 7 and cowl board 2, rear bulkheads 3 simultaneously, 4 of tube filled with foam aluminum play to be stablized conquassation plastic deformation and increases endergonic effect.Have conquassation control punch 5 on the barrel of casing 6; Be used to control casing 6 bear the certain numerical value longitudinal force do the time spent will be by desirable conquassation pattern recurring structure conquassation; Orderly and the desirable plastic deformation of implementation structure conquassation; Thereby the big kinetic energy that can reasonably consume collision and produced reaches the requirement of better protection occupant safety.
Through the collision simulation that this anti-creeper is carried out, can reflect its good energy-absorbing effect and other collision correlation properties.Emulation operating mode and condition: 1. this anti-creeper (back with comparatively big quality), with the collision velocity bump rigid wall of 25 kilometers/hour (promptly approximate 7 meter per seconds), examine it to absorb kinetic energy ability and other collision performances.
2. load by British Standard, Automobile Series the static strength of anti-creeper of the present invention has been carried out finite element analysis; The structural stress that the result obtains shows; Anti-creeper is under the given loading of standard; Maximum stress is less than the permissible stress of material, thereby structure also can satisfy the designing requirement of static strength standard when having big energy-absorbing function.
Accompanying drawing 3-accompanying drawing 4 is the collision energy-absorbing characteristic curves that obtain through collision simulation.
Can see by energy diagram, at 82ms constantly, about metal cabinet energy-absorbing 170KJ, the foamed aluminium metallic material, energy-absorbing is approximately 30KJ, total about 200KJ of energy absorption.
Visible by figure; Single anti-creeper structure produces first peak value in the time of 2.5ms; Numerical value is about 690KN, and the longitudinal force summation of two anti-creepers of headstock has been slightly larger than the critical value of the suffered longitudinal force of coupler draft gear (1200-1300KN), and this is the moment that the energy-absorbing anti-creeper need play a role; Thereby the collision of satisfying control punch triggers designing requirement, after the triggering with the recurring structure collapse energy-absorption.
Claims (4)
1. city railway train energy-absorbing anti-creeper; Constitute by anti-creep tooth plate (1), cowl board (2), rear bulkhead (3), foam-filled pipe (4), the first conquassation control punch (5-1), the second conquassation control punch (5-2), casing (6) and base (7); It is characterized in that casing (6) is the tube structure of hollow; Both sides are provided with anti-creep tooth plate (1) and base (2); Vertically be furnished with cowl board (2) and rear bulkhead (3) in the casing (6); They are separated into three less box type constructions that wall thickness is identical with casing (6), and the area of space between anti-creep tooth plate (1) and the cowl board (2) is first box type construction (6-1), and the area of space between cowl board (2) and the rear bulkhead (3) is second box type construction (6-2); Area of space between rear bulkhead (3) and the base (7) is the 3rd box type construction (6-3); The equal in length of first box type construction (6-1) and second box type construction (6-2), and shorter with respect to the 3rd box type construction length, the barrel left and right sides of first box type construction (6-1) and second box type construction (6-2) offers the first conquassation control punch (5-1) and the second conquassation control punch (5-2) respectively; The 3rd box type construction (6-3) vertically is furnished with foam-filled pipe (4), and base plate (7) is fixed on the car body underframe end construction.
2. city railway train energy-absorbing anti-creeper according to claim 1 is characterized in that the hole length of the conquassation control punch (5-2) that the interior conquassation control punch (5-1) of first box type construction (6-1) is interior than second box type construction (6-2) is long slightly.
3. city railway train energy-absorbing anti-creeper according to claim 1, its characteristic is that rectangle adds two semicircles in the structure of the first conquassation control punch (5-1) and the second conquassation control punch (5-2), two apertures and length are based on the energy-absorbing anti-creeper and must satisfy:
(1) under the effective working load of coupler draft gear statical stress less than the static strength permissible stress to keep Stability Analysis of Structures;
(2) dual complicatedly require to carry out down coordination optimization design acquisition when what coupler draft gear lost efficacy that the METHOD FOR LARGE DEFORMATION ELASTOPLASTIC energy-absorbing must take place greater than material yield stress back stress.
4. city railway train energy-absorbing anti-creeper according to claim 1 is characterized in that said foam-filled pipe (4) adopts foamed aluminium core filling aluminum pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102823300A CN102358319A (en) | 2011-09-22 | 2011-09-22 | Energy-absorbing anticreeper of urban railway train |
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| CN2011102823300A CN102358319A (en) | 2011-09-22 | 2011-09-22 | Energy-absorbing anticreeper of urban railway train |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102689638A (en) * | 2012-05-31 | 2012-09-26 | 中南大学 | Impact energy-absorbing device of partition board sleeve-type tandem connection porous solid element |
| CN103786741A (en) * | 2012-10-30 | 2014-05-14 | 南车青岛四方机车车辆股份有限公司 | Anti-creeping energy absorption device for railway vehicle |
| CN104724135A (en) * | 2013-12-18 | 2015-06-24 | 天津机辆轨道交通装备有限责任公司 | Lateral buffer of coach bus |
| CN107487337A (en) * | 2017-09-19 | 2017-12-19 | 北京交通大学 | A kind of rail vehicle anticreeper |
| CN107709131A (en) * | 2015-08-04 | 2018-02-16 | 川崎重工业株式会社 | The crash energy absorption plant of rail truck |
| CN107748812A (en) * | 2017-09-26 | 2018-03-02 | 中车青岛四方机车车辆股份有限公司 | A kind of honeycomb fashion anti-creep energy absorber collision simulation method and system |
| CN110598341A (en) * | 2019-09-18 | 2019-12-20 | 西南交通大学 | Design method of induced energy absorption device |
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| CN201049638Y (en) * | 2006-12-20 | 2008-04-23 | 南车四方机车车辆股份有限公司 | Anti-climbing device for rail vehicle |
| CN101906829A (en) * | 2010-08-20 | 2010-12-08 | 王占清 | Foamed aluminum noise-reducing acoustic board and application thereof |
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Patent Citations (4)
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| JP2007326551A (en) * | 2006-05-10 | 2007-12-20 | Hitachi Ltd | Collision energy absorbing device and rail vehicle equipped therewith |
| CN2892604Y (en) * | 2006-05-19 | 2007-04-25 | 长春轨道客车股份有限公司 | Railway passenger coach energy-suction module |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102689638A (en) * | 2012-05-31 | 2012-09-26 | 中南大学 | Impact energy-absorbing device of partition board sleeve-type tandem connection porous solid element |
| CN102689638B (en) * | 2012-05-31 | 2015-01-21 | 中南大学 | Impact energy-absorbing device of partition board sleeve-type tandem connection porous solid element |
| CN103786741A (en) * | 2012-10-30 | 2014-05-14 | 南车青岛四方机车车辆股份有限公司 | Anti-creeping energy absorption device for railway vehicle |
| CN104724135A (en) * | 2013-12-18 | 2015-06-24 | 天津机辆轨道交通装备有限责任公司 | Lateral buffer of coach bus |
| CN107709131A (en) * | 2015-08-04 | 2018-02-16 | 川崎重工业株式会社 | The crash energy absorption plant of rail truck |
| CN107487337A (en) * | 2017-09-19 | 2017-12-19 | 北京交通大学 | A kind of rail vehicle anticreeper |
| CN107487337B (en) * | 2017-09-19 | 2019-10-01 | 北京交通大学 | A kind of rail vehicle anticreeper |
| CN107748812A (en) * | 2017-09-26 | 2018-03-02 | 中车青岛四方机车车辆股份有限公司 | A kind of honeycomb fashion anti-creep energy absorber collision simulation method and system |
| CN110598341A (en) * | 2019-09-18 | 2019-12-20 | 西南交通大学 | Design method of induced energy absorption device |
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Application publication date: 20120222 |