CN112744252A - Vehicle front end energy-absorbing device and vehicle - Google Patents
Vehicle front end energy-absorbing device and vehicle Download PDFInfo
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- CN112744252A CN112744252A CN201911055689.7A CN201911055689A CN112744252A CN 112744252 A CN112744252 A CN 112744252A CN 201911055689 A CN201911055689 A CN 201911055689A CN 112744252 A CN112744252 A CN 112744252A
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- energy absorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F19/00—Wheel guards; Bumpers; Obstruction removers or the like
- B61F19/04—Bumpers or like collision guards
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Abstract
The invention provides a vehicle front end energy absorption device and a vehicle, belonging to the technical field of railway vehicles, and comprising a cross beam, an edge beam, an energy absorption structure and a guide deformation beam, wherein the cross beam is fixedly arranged on the front side of the lower end of a cab floor; the two edge beams are respectively arranged on two sides of the cross beam, and one end of each edge beam is connected to the cross beam; the energy absorption structure is arranged between the two side beams, and one end of the energy absorption structure is fixed on the cross beam and is used for absorbing collision energy; the guide deformation beam is arranged between the two edge beams and is positioned on one side of the energy absorption structure; the long holes on the guide deformation beam enable the guide deformation beam to be easily compressed and drive the whole cross beam to retract backwards, so that collision energy is better absorbed by the energy absorption structure, the energy absorption structure can better play a role in buffering, and the safety performance of a vehicle is improved.
Description
Technical Field
The invention belongs to the technical field of railway vehicles, and particularly relates to a vehicle front end energy absorption device and a vehicle.
Background
With the continuous perfection of the performance and functions of the urban rail transit vehicle product, the passive safety design of the vehicle, particularly the requirement on the energy absorption performance of the train in accidental collision is higher and higher. When collision occurs, the collision angle is difficult to control, so that the energy absorption structure positioned at the vehicle head cannot accurately move along the energy absorption direction, and the energy absorption structure cannot stably absorb energy, so that the energy absorption structure cannot well play a role in buffering when the vehicle has a collision accident, and the safety performance of the vehicle is reduced.
Disclosure of Invention
The invention aims to provide a vehicle front end energy absorption device and a vehicle, and aims to solve the technical problem that in the prior art, an energy absorption structure cannot accurately move along an energy absorption direction, so that the vehicle safety is low.
In order to achieve the purpose, the invention adopts the technical scheme that: provided is a vehicle front end energy absorption device, comprising:
the cross beam is fixedly arranged on the front side of the lower end of the cab floor;
the two boundary beams are respectively arranged on two sides of the cross beam, one end of each boundary beam is connected to the cross beam, and the other end of each boundary beam is fixedly arranged on an end beam of the vehicle body;
the energy absorption structure is arranged between the two side beams, one end of the energy absorption structure is fixed on the cross beam, and the other end of the energy absorption structure is fixed on the end beam of the vehicle body and is used for absorbing collision energy;
the guide deformation beam is arranged between the two side beams and is positioned on one side of the energy absorption structure; the last equipartition of direction deformation roof beam sets up a plurality of rectangular holes, the length direction in rectangular hole with the length direction of direction deformation roof beam is perpendicular.
As another embodiment of the application, the guide deformation beam is of a hollow structure, and each elongated hole is communicated with an inner cavity of the hollow structure.
As another embodiment of this application, the direction deformation roof beam is square pipe, each rectangular hole equipartition in on each side of direction pipe.
As another embodiment of the present application, the side sill includes:
one end of the first side beam is fixed on the cross beam, and the other end of the first side beam is used for extending towards the end beam of the vehicle body; the first side beam is provided with a sliding part;
one end of the second side beam is used for being fixed on the vehicle body end beam, and the other end of the second side beam extends towards the cross beam; the second side beam is provided with a sliding groove in sliding fit with the sliding part;
the first side member and the second side member are slidably connected through the sliding portion and the sliding groove.
As another embodiment of the present application, the first side member and the cross member are integrally formed.
As another embodiment of the present application, the cross beam is a hollow structure, and a rib plate for increasing the strength of the cross beam is arranged in an inner cavity of the hollow structure.
As another embodiment of the application, two ends of the cross beam are respectively provided with a plugging plate.
As another embodiment of the application, one side of the cross beam, which is far away from the side beam, is fixedly provided with a plurality of anti-climbing teeth.
As another embodiment of the application, a plurality of lightening holes are formed in one side, close to the cross beam, of the anti-climbing teeth.
The vehicle front end energy absorption device provided by the invention has the beneficial effects that: compared with the prior art, the vehicle front end energy absorption device of the invention has the advantages that the beam is fixed on the floor of the cab, and the boundary beams are respectively arranged at two sides of the cross beam, so that the cross beam, the boundary beams, the cab floor and the vehicle body end beam enclose an installation space, the energy absorption structure and the guide deformation beam are respectively installed between the two boundary beams, when collision occurs, the cross beam is taken as a stress point, the cross beam deforms to transmit impact energy to the energy absorption structure, when the impacted point deviates from the center of the cross beam, the impact force acts on the cross beam at an inclined angle, the cross beam deforms at the moment and acts on the energy absorption structure to absorb energy, the long holes on the guide deformation beam enable the guide deformation beam to be easily compressed and drive the whole cross beam to retract backwards, and then make collision energy better by the energy-absorbing structure absorption, make the energy-absorbing structure can be better play the cushioning effect, improved the security performance of vehicle.
Another object of the present invention is to provide a vehicle including any one of the vehicle front end energy absorbers described above.
According to the vehicle provided by the invention, as the vehicle front-end energy absorption device is adopted, collision energy is better absorbed by the energy absorption structure, the energy absorption structure can better play a role in buffering, and the safety performance of the vehicle is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a first schematic structural diagram of a vehicle front end energy absorption device according to an embodiment of the present invention;
FIG. 2 is a partial schematic view of a front end energy absorber of a vehicle according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a vehicle front end energy absorption device according to an embodiment of the present invention;
FIG. 4 is a third schematic structural view of a vehicle front end energy absorption device according to an embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
1. a cross beam; 11. a rib plate; 12. anti-climbing teeth; 121. a trench; 2. a boundary beam; 21. a first side member; 211. a sliding part; 22. a second side member; 221. a chute; 3. an energy absorbing structure; 4. guiding the deformation beam; 41. a strip hole; 5. a cab floor; 6. a vehicle body end beam.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 4, a front end energy absorption device for a vehicle according to the present invention will now be described. A vehicle front end energy absorption device comprises a crossbeam 1, an edge beam 2, an energy absorption structure 3 and a guide deformation beam 4, wherein the crossbeam 1 is fixedly arranged on the front side of the lower end of a cab floor 5; the number of the boundary beams 2 is two, the boundary beams 2 are used for being fixed on a cab floor 5, the two boundary beams 2 are respectively arranged on two sides of the cross beam 1, one end of each boundary beam 2 is connected to the cross beam 1, and the other end of each boundary beam is used for being fixedly arranged on an end beam 6 of a vehicle body; the energy absorption structure 3 is arranged between the two side beams 2, one end of the energy absorption structure is fixed on the cross beam 1, and the other end of the energy absorption structure is fixed on the end beam 6 of the vehicle body and is used for absorbing collision energy; the guide deformation beam 4 is arranged between the two edge beams 2 and is positioned on one side of the energy absorption structure 3; a plurality of strip holes 41 are uniformly distributed on the guide deformation beam 4, and the length direction of the strip holes 41 is vertical to the length direction of the guide deformation beam 4.
Compared with the prior art, the vehicle front end energy absorption device provided by the invention has the advantages that the cross beam 1 is fixed on the cab floor 5, the side beams 2 are respectively arranged at two sides of the cross beam 1, so that the cross beam 1, the side beams 2, the cab floor 5 and the vehicle body end beam 6 enclose an installation space, the energy absorption structure 3 and the guide deformation beam 4 are respectively installed between the two side beams 2, when collision occurs, the cross beam 1 is used as a stress point, the cross beam 1 deforms and transmits impact energy to the energy absorption structure 3, when the collision point deviates from the center of the cross beam 1, the impact force acts on the cross beam 1 at an inclined angle, at the moment, the cross beam 1 deforms and acts on the energy absorption structure 3 to absorb energy, and the long holes 41 on the guide deformation beam 4 enable the guide deformation beam 4 to be easily compressed and drive the whole cross beam 1 to retract backwards, so that the collision energy is better absorbed by the energy absorption structure 3, the energy absorption structure 3 can better play a role in buffering, and the safety performance of the vehicle is improved.
The whole vehicle front end energy absorption device is fixed on the lower end face of a cab, and the beam 1 is positioned at the front end of the lower end face of the cab, namely, the end far away from a vehicle body, so that when a collision accident occurs, the beam 1 serves as a stress point and transmits energy generated by collision to the energy absorption structure 3. Two ends of the energy-absorbing structure 3 are respectively fixed on the cross beam 1 and the vehicle body end beam 6, after the cross beam 1 collides, the energy is transmitted to the energy-absorbing structure 3, and the energy-absorbing structure 3 absorbs the energy, so that the damage to the vehicle body and a driver is reduced. The beam 1 can be welded on a cab floor 5, and two ends of the energy absorption structure 3 are respectively provided with a mounting seat and are welded on the beam 1 and a vehicle body end beam 6 through the mounting seats. The lower end face of the boundary beam 2 is welded on the cab floor 5, and the front end and the rear end are fixed on the cross beam 1 and the vehicle body end beam 6.
The energy absorption structures 3 are arranged into two groups and are respectively arranged on two sides of the guide deformation beam 4. Energy-absorbing structure 3 adopts aluminium honeycomb energy-absorbing device, it is fixed to install through two mount pads around, is equipped with a plurality of aluminium honeycombs of arranging in proper order between two mount pads, be equipped with between two adjacent aluminium honeycombs with aluminium honeycomb adhesive fixation's baffle to use the honeycomb covering to surround a plurality of aluminium honeycombs, use a stand pipe to run through each aluminium honeycomb simultaneously, the one end of stand pipe is fixed in the front on the mount pad, and with back mount pad sliding fit. Select for use the big and stable aluminium honeycomb of energy-absorbing capacity, further improve whole energy-absorbing device's energy-absorbing stationarity, design into the ripple type with the honeycomb covering simultaneously, can make energy-absorbing structure 3 like this in compression process, the honeycomb covering is destroyed by the compression more easily, reduces its impedance that produces in this process, furthest reduces its interference influence to energy-absorbing device impedance setting. The guide pipe is provided with a first limiting hole, a second limiting hole corresponding to the first limiting hole is formed in the rear mounting seat, and after the guide pipe is mounted to the rear mounting seat, the guide pipe is limited by the aid of the pin shaft penetrating through the first limiting hole and the second limiting hole. The pin shaft is easy to break, so that the normal work of the energy absorption structure 3 cannot be influenced.
Referring to fig. 2 and 4, as an embodiment of the energy absorption device for a front end of a vehicle provided by the present invention, the guide deformation beam 4 is a hollow structure, each elongated hole 41 is communicated with an inner cavity of the hollow structure, the guide deformation beam 4 is configured as a hollow structure, and the elongated hole 41 is communicated with the hollow structure, and the wall thickness of the guide deformation beam 4 of the hollow structure is small, so that the guide deformation beam can be more easily damaged by compression when an external force is applied. The distance between two adjacent elongated holes 41 is set smaller than the width of the elongated holes 41. Meanwhile, the easily-compressed length formed by the plurality of strip holes 41 is equal to the compression stroke of the energy absorption structure 3, so that the strength of the whole underframe is ensured, and when the energy absorption structure 3 is not in use, the guide deformation beam 4 can play a role in improving the strength of the energy absorption device at the front end of the whole vehicle.
Referring to fig. 2 and 4, as a specific embodiment of the energy absorbing device for a front end of a vehicle according to the present invention, the guiding deformation beam 4 is a square tube, the elongated holes 41 are uniformly distributed on each side surface of the direction tube, the guiding deformation beam 4 is a square tube and includes four side walls, and a plurality of elongated holes 41 are uniformly distributed on the outer surface of each side wall, so as to facilitate the backward compression deformation of the guiding deformation beam 4 during the acceptance. The distance between two adjacent elongated holes 41 on each side wall gradually decreases from front to back, and the collision force gradually decreases with time, so that the distance between two adjacent elongated holes 41 on the back is reduced to ensure the retraction effect of the guide deformation beam 4, and the deformation is easier.
Referring to fig. 1 to 4, as an embodiment of the energy absorption device for a front end of a vehicle according to the present invention, a side member 2 includes a first side member 21 and a second side member 22, wherein one end of the first side member 21 is fixed to a cross member 1, and the other end is configured to extend toward an end member 6 of a vehicle body; the first side member 21 is provided with a slide portion 211; one end of the second side beam 22 is used for being fixed on the vehicle body end beam 6, and the other end extends towards the cross beam 1; the second side beam 22 is provided with a sliding groove 221 which is in sliding fit with the sliding part 211, and the first side beam 21 and the second side beam 22 are in sliding connection through the sliding part 211 and the sliding groove 221; the side beam 2 is divided into two parts, a first side beam 21 is fixedly arranged on the cross beam 1, a second side beam 22 is fixedly arranged on the vehicle body end beam 6, the first side beam 21 and the second side beam 22 are arranged in a staggered manner, a sliding part 211 is arranged on the side surface of the first side beam 21 close to the second side beam 22, a sliding groove 221 in sliding fit with the sliding part 211 is arranged on the side surface of the second side beam 22 close to the first side beam 21, and the whole cross beam 1 can be guided to deform backwards after the cross beam 1 is subjected to collision force; this sliding arrangement of the first and second side members 21, 22 reduces the longitudinal resistance to near-elimination without reducing the vertical load carrying capacity thereof. The beam 1 is made of hollow extruded aluminum section materials, and two ends of the beam 1 are welded with the blocking plate plates for sealing, so that rainwater is prevented from entering. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
Referring to fig. 1 to 4, as an embodiment of the vehicle front end energy absorber provided by the present invention, the first side member 21 and the cross member 1 are integrally formed, so that stability and strength between the cross member 1 and the first side member 21 are increased, and after the cross member 1 is subjected to a large collision force, the joint between the first side member 21 and the cross member 1 is not broken, and the first side member 21 can slide backward along the second side member 22.
Referring to fig. 4, as a specific embodiment of the vehicle front end energy absorption device provided by the present invention, the cross beam 1 is a hollow structure, a rib plate 11 for increasing the strength of the cross beam 1 is disposed in an inner cavity of the hollow structure, and the cross beam 1 may be made of a hollow aluminum profile, so that the weight of the whole cross beam 1 is light, and the weight of the vehicle is not affected. Meanwhile, a plurality of rib plates 11 are arranged in the hollow aluminum profile, so that the beam 1 still has strong bending resistance.
Referring to fig. 4, as a specific embodiment of the vehicle front end energy absorption device provided by the present invention, two ends of the beam 1 are respectively provided with a blocking plate, two ends of the hollow aluminum profile are provided with the blocking plates, and the beam 1 with the hollow structure is made into a sealing structure to prevent rainwater or other foreign matters from entering the beam 1.
Referring to fig. 1 to 4, as a specific embodiment of the energy absorption device for the front end of a vehicle according to the present invention, a plurality of anti-climbing teeth 12 are fixedly disposed on a side of the cross beam 1 away from the side beam 2, and the anti-climbing teeth 12 are disposed so that when two vehicles collide, one vehicle will not press another vehicle. The end face of the anti-creep teeth 12 is provided with a plurality of grooves 121 or outwardly convex tooth-shaped strips. When collision happens, the anti-climbing teeth 12 at the head parts of the two vehicles can be meshed with each other, and the safety of a driver and passengers is ensured to the maximum extent. The anti-climbing teeth 12 are made by adopting an aluminum casting process and are fixed on the cross beam 1 in a welding mode.
Referring to fig. 2 and 4, as an embodiment of the energy absorbing device for the front end of the vehicle provided by the present invention, a plurality of lightening holes are provided on one side of the anti-climbing teeth 12 close to the cross beam 1, and the lightening holes are provided, so that the self weight can be reduced to the maximum extent on the premise of ensuring the structural strength of the anti-climbing teeth 12. The lightening holes can be blind holes and are evenly distributed on the climbing-proof teeth 12 in a rectangular shape. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the figures, embodiments of the present invention further provide a vehicle, where the vehicle includes any one of the vehicle front end energy absorption devices described above.
According to the vehicle provided by the embodiment of the invention, the vehicle front-end energy absorption device is adopted, so that collision energy is better absorbed by the energy absorption structure 3, the energy absorption structure 3 can better play a role in buffering, and the safety performance of the vehicle is improved.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. Vehicle front end energy-absorbing device, its characterized in that includes:
the cross beam is fixedly arranged on the front side of the lower end of the cab floor;
the two boundary beams are respectively arranged on two sides of the cross beam, one end of each boundary beam is connected to the cross beam, and the other end of each boundary beam is fixedly arranged on an end beam of the vehicle body;
the energy absorption structure is arranged between the two side beams, one end of the energy absorption structure is fixed on the cross beam, and the other end of the energy absorption structure is fixed on the end beam of the vehicle body and is used for absorbing collision energy;
the guide deformation beam is arranged between the two side beams and is positioned on one side of the energy absorption structure; the last equipartition of direction deformation roof beam sets up a plurality of rectangular holes, the length direction in rectangular hole with the length direction of direction deformation roof beam is perpendicular.
2. The vehicle front end energy absorber according to claim 1, wherein said guided deformation beam is a hollow structure, and each of said elongated holes communicates with an inner cavity of said hollow structure.
3. The vehicle front end energy absorber according to claim 1, wherein said guided deformation beam is a square tube, and said elongated holes are uniformly distributed on each side of said direction tube.
4. The vehicle front end energy absorber of claim 1, wherein said side rail comprises:
one end of the first side beam is fixed on the cross beam, and the other end of the first side beam is used for extending towards the end beam of the vehicle body; the first side beam is provided with a sliding part;
one end of the second side beam is used for being fixed on the vehicle body end beam, and the other end of the second side beam extends towards the cross beam; the second side beam is provided with a sliding groove in sliding fit with the sliding part;
the first side member and the second side member are slidably connected through the sliding portion and the sliding groove.
5. The vehicle front end energy absorber of claim 4, wherein said first side member and said cross member are integrally formed.
6. The vehicle front end energy absorber according to claim 1, wherein the beam is of a hollow structure, and a rib plate for increasing the strength of the beam is arranged in an inner cavity of the hollow structure.
7. The vehicle front end energy absorber according to claim 6, wherein said beam is provided with blanking panels at each end.
8. The vehicle front end energy absorber of claim 1, wherein a plurality of anti-creep teeth are fixedly disposed on a side of said beam remote from said side rails.
9. The vehicle front end energy absorber according to claim 8, wherein a plurality of lightening holes are provided on a side of said anti-creep tooth adjacent to said beam.
10. A vehicle comprising a vehicle front end energy absorber according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911055689.7A CN112744252B (en) | 2019-10-31 | 2019-10-31 | Vehicle front end energy-absorbing device and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911055689.7A CN112744252B (en) | 2019-10-31 | 2019-10-31 | Vehicle front end energy-absorbing device and vehicle |
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| CN112744252A true CN112744252A (en) | 2021-05-04 |
| CN112744252B CN112744252B (en) | 2022-07-01 |
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