CN211417184U - Front energy absorption device of passenger car - Google Patents
Front energy absorption device of passenger car Download PDFInfo
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- CN211417184U CN211417184U CN201922347487.1U CN201922347487U CN211417184U CN 211417184 U CN211417184 U CN 211417184U CN 201922347487 U CN201922347487 U CN 201922347487U CN 211417184 U CN211417184 U CN 211417184U
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Abstract
The utility model discloses a front energy absorption device of a passenger car, which comprises a tubular part, a middle part, foamed aluminum filler, a top plate and a bottom plate; the tubular part comprises a first outer circular pipe, a fiber reinforced composite material and a second outer circular pipe, the second outer circular pipe is sleeved outside the first outer circular pipe, and the fiber reinforced composite material is filled between the second outer circular pipe and the first outer circular pipe; the middle part comprises a pressure bearing pipe, a pressure applying pipe and a pressure plate, the top end surface of the pressure applying pipe is propped against the bottom wall of the top plate, the bottom end surface of the pressure bearing pipe is propped against the top wall of the bottom plate, and the pressure plate is arranged between the pressure bearing pipe and the pressure applying pipe; the middle part is arranged in the tubular part, and foam aluminum fillers are filled in a cavity between the middle part and the first outer circular pipe, the pressure-bearing pipe and the pressure-applying pipe. It has the following advantages: the technical scheme can absorb more energy through stable crumpling when the passenger car collides at a medium and high speed, has high compressive strength and good energy absorption effect, and is favorable for improving the buffering effect.
Description
Technical Field
The utility model relates to a passenger train spare part technical field especially relates to a front portion energy-absorbing device of passenger train.
Background
In the current society, the safety performance of passenger car collision is concerned, the front anti-collision beam assembly is one of main assemblies for collision energy absorption, and the energy absorption boxes in the anti-collision beam assembly absorb collision energy through self crushing deformation in collision, so that the front anti-collision beam assembly is one of important parts of the anti-collision beam assembly.
The conventional passenger car anti-collision beam energy absorption box structure is mostly of a box-shaped structure with a polygonal section, two box-shaped structures with the same or symmetrical structures are distributed on two sides of an anti-collision beam, and the box-shaped structure is welded with the anti-collision beam to form an anti-collision beam assembly. The energy absorption box absorbs the collision energy by self-collapsing deformation, and the single energy absorption box can only control the collapsing deformation by designing self-energy absorption ribs, the shape of the cross section and the like. When the vehicle collides at a medium and high speed, the energy absorption is weak, the crumpling form is unstable, no matter the vehicle body longitudinal beam or the vehicle interior passenger can not be well protected, in addition, no matter what kind of collision occurs, the energy absorption box can be partially deformed, and the energy absorption box must be replaced in the maintenance process, so that the maintenance cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model provides a front energy-absorbing device of passenger train, it has overcome the not enough that the crashproof roof beam energy-absorbing box of background art well passenger train exists.
The utility model provides an adopted technical scheme of its technical problem is:
a front energy absorption device of a passenger car comprises a tubular part, a middle part, foamed aluminum filler (4), a top plate (6) and a bottom plate (8), wherein the top plate (6) and the bottom plate (8) are fixedly arranged on the top end surface and the bottom end surface of the tubular part respectively; the tubular part comprises a first outer circular tube (1), a fiber reinforced composite material (5) and a second outer circular tube (9), the second outer circular tube (9) is sleeved outside the first outer circular tube (1), and the fiber reinforced composite material (5) is filled between the second outer circular tube (9) and the first outer circular tube (1); the middle part is arranged in the tubular part, and a cavity between the middle part and the first outer circular tube (1) is filled with foamed aluminum filler (4); the middle part comprises a pressure bearing pipe (2), a pressure applying pipe (3) and a pressing plate (7), the top end face of the pressure applying pipe (3) is abutted against the bottom wall of the top plate (6), the bottom end face of the pressure bearing pipe (2) is abutted against the top wall of the bottom plate (8), the pressing plate (7) is arranged between the pressure bearing pipe (2) and the pressure applying pipe (3), and foam aluminum fillers (4) are filled in the pressure bearing pipe (2) and the pressure applying pipe (3).
In one embodiment: the outer pipe wall of the first outer circular pipe (1) is a cylindrical wall, and the inner diameter of the first outer circular pipe (1) is in gradient change from large to small from top to bottom; and a plurality of first rectangular grooves (11) which are arranged at equal intervals are formed in the pipe walls of the inner side and the outer side of the first outer circular pipe (1).
In one embodiment: a plurality of layers of fiber reinforced composite materials (5) are arranged between the first outer circular tube (1) and the second outer circular tube (9), and the layering directions of the plurality of layers of fiber reinforced composite materials (5) are different from each other.
In one embodiment: the relative density of the foamed aluminum filler (4) filled in the cavity between the middle part and the first outer circular tube (1) is changed from top to bottom in a gradient manner from small to large.
In one embodiment: the foamed aluminum filler (4) filled in the pressure bearing pipe (2) and the pressure applying pipe (3) are in two-stage gradient change, and the relative density of the foamed aluminum filler (4) at the lower part is greater than that of the foamed aluminum filler (4) at the upper part.
In one embodiment: the pressure-bearing pipe (2) is an aluminum alloy circular pipe with the bottom bearing, the inner pipe wall of the pressure-bearing pipe (2) is a cylindrical wall, and the outer diameter of the pressure-bearing pipe (2) is changed from top to bottom in a gradient manner from large to small; and a plurality of second rectangular grooves (21) which are arranged at equal intervals are formed in the pipe walls of the inner side and the outer side of the pressure bearing pipe (2).
In one embodiment: the pressure application pipe (3) is an aluminum alloy circular pipe with the top applied with pressure, the outer pipe wall of the pressure application pipe (3) is a cylindrical wall, and the inner diameter of the pressure application pipe (3) is changed from top to bottom in a gradient manner from small to large; and a plurality of third rectangular grooves which are equidistantly arranged from top to bottom are formed in the pipe walls of the inner side and the outer side of the pressure applying pipe (3).
In one embodiment: a first outer chamfering structure is arranged on the outer edge of the pressure applying pipe (3), a second outer chamfering structure is also arranged on the outer wall of the pressure plate (7), and the first outer chamfering structure and the second outer chamfering structure are arranged in an aligned mode; an inner chamfer structure is arranged on the inner edge of the top of the pressure bearing pipe (2); the second outer chamfer structure is located within the inner chamfer structure.
In one embodiment: the pressing surface of the pressing plate (7) is an arc surface, and the bottom wall of the top plate (6) and the top wall of the bottom plate (8) are both of an arched structure with an arched middle part.
In one embodiment: the second outer circular tube (9) is a stainless steel outer circular tube with multiple layers and multiple rows of through holes distributed in an array mode.
Compared with the background technology, the technical scheme has the following advantages:
the technical scheme can absorb more energy through stable crumpling when the passenger car collides at a medium and high speed, has high compressive strength and good energy absorption effect, and is favorable for improving the buffering effect.
Drawings
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
FIG. 1 is a schematic structural diagram of a front energy absorption device of a passenger car.
Fig. 2 is an enlarged schematic view of a portion a of fig. 1.
Fig. 3 is an enlarged schematic view of fig. 1 at B.
FIG. 4 is a schematic structural view of a second outer tube of a front energy absorber of a passenger vehicle.
Detailed Description
Referring to fig. 1 to 4, the front energy absorption device for a passenger car is fixedly arranged between an anti-collision beam and a body longitudinal beam of the passenger car, and comprises a tubular part, a middle part, a foamed aluminum filler 4, a top plate 6 and a bottom plate 8, wherein the top plate 6 and the bottom plate 8 are fixedly arranged on the top end surface and the bottom end surface of the tubular part respectively.
The tubular section comprises a first outer circular tube 1, a fibre-reinforced composite material 5 and a second outer circular tube 9. The second outer circular tube 9 is sleeved outside the first outer circular tube 1, and the fiber reinforced composite material 5 is filled between the second outer circular tube 9 and the first outer circular tube 1. Referring to fig. 3, the first outer tube 1 is wrapped with three layers of fiber reinforced composite materials 5 with different layering directions, and the second outer tube 9 is wrapped with the outer layer of fiber reinforced composite materials 5. The fiber composite reinforcement 5 has a light weight and high strength characteristic, and absorbs impact energy by deformation to the maximum extent during collapse.
The first outer circular tube 1 is made of aluminum alloy, is an aluminum alloy circular tube, and is light in weight, high in strength and good in toughness; in order to improve the energy absorption trapezium of the original homogeneous circular tube, the outer tube wall of the first outer circular tube 1 is a cylindrical surface, the inner diameter of the first outer circular tube 1 is changed from top to bottom in a gradient manner from large to small, a plurality of first rectangular grooves 11 which are equidistantly arranged from top to bottom are formed in the inner side wall and the outer side wall of the first outer circular tube 1 and used for inducing the compression direction, and the first rectangular grooves 11 in the inner side wall and the outer side wall are staggered from top to bottom. According to the requirement, a plurality of the first rectangular grooves 11 are arranged on the circumferential direction of the pipe wall of the first outer circular pipe 1.
Referring to fig. 4, the second outer circular tube 9 is a stainless steel outer circular tube with multiple layers and multiple rows of long holes 91 distributed in an array, and four long holes are uniformly distributed in each layer, so that four layers are formed; in the whole compression process, the second outer circular tube 9 guides the whole compression direction to be compression along the axial direction of the energy absorption box (the vertical direction in fig. 1), and has a certain guiding effect on the failure mode of the fiber reinforced composite material, so that the fiber reinforced composite material 5 is tightly attached to the first outer circular tube, and the fiber reinforced composite material has an important effect on the dissipation of impact energy.
The middle part comprises a pressure bearing pipe 2, a pressure applying pipe 3 and a pressure plate 7, the top end face of the pressure applying pipe 3 is fixedly connected with the bottom wall of a top plate 6, the bottom end face of the pressure bearing pipe 2 is fixedly connected with the top wall of a bottom plate 8, and the pressure plate 7 is arranged between the pressure bearing pipe 2 and the pressure applying pipe 3.
The pressure-bearing pipe 2, the pipe 3 of exerting pressure all locate in first outer pipe 1, first outer pipe 1 with relative density from the top down is filled to the cavity between 2, first outer pipe 1 and the pipe 3 of exerting pressure and is shown by the foam aluminium filler 4 of little to big gradient change between the pressure-bearing pipe to enable the energy-absorbing device when receiving the compression effect, through the collapse deformation of first outer pipe 1 and the compaction of foam aluminium filler 4 in the cavity between 1 and 2, the pipe 3 of exerting pressure progressively dissipate the energy of first outer pipe. The pressure bearing pipe 2 and the pressure applying pipe 3 are filled with two-stage gradient foamed aluminum filler 4, and the relative density of the lower foamed aluminum filler 4 is greater than that of the upper foamed aluminum filler 4.
The pressure-bearing pipe 2 is a bottom pressure-bearing aluminum alloy circular pipe, the inner pipe wall of the pressure-bearing pipe 2 is a cylindrical wall, and the outer diameter of the outer pipe wall is in gradient change from large to small from top to bottom; the inner side and the outer side of the pressure-bearing pipe 2 are respectively provided with a plurality of second rectangular grooves 21 which are arranged at equal intervals up and down and used for inducing the compression direction, and the second rectangular grooves 21 of the inner side and the outer side of the pipe walls are arranged in a staggered mode up and down. According to the requirement, a plurality of the second rectangular grooves 21 are arranged on the circumferential direction of the pipe wall of the pressure bearing pipe 2.
The pressure applying pipe 3 is a top pressure applying aluminum alloy circular pipe, the outer pipe wall of the pressure applying pipe 3 is a cylindrical wall, and the inner diameter of the inner pipe wall is in gradient change from small to large from top to bottom; the pipe walls of the inner side and the outer side of the pressure pipe 3 are respectively provided with a plurality of third rectangular grooves which are equidistantly arranged up and down and used for inducing the compression direction, and the third rectangular grooves of the pipe walls of the inner side and the outer side are staggered up and down. According to the requirement, a plurality of the third rectangular grooves are arranged on the circumferential direction of the pipe wall of the pressure applying pipe 3.
Referring to fig. 2, in order to further optimize the energy absorption effect of the energy absorption device, a pressure-bearing pipe 2 and a pressure pipe 3 are arranged inside a first outer circular pipe 1 and are connected in a socket manner, and the pressure pipe 3 and the pressure-bearing pipe 2 are arranged up and down. The outer edge of the pressure applying pipe 3 is provided with a first outer chamfering structure 31, the outer wall of the pressure plate 7 is also provided with a second outer chamfering structure 71, and the first outer chamfering structure and the second outer chamfering structure are arranged in an aligned manner; an inner chamfer structure 22 is arranged on the inner edge of the top of the pressure bearing pipe 2; the second outer chamfer structure is positioned in the inner chamfer structure so as to realize the socket connection. Moreover, the chamfer angle of the inner chamfer angle structure is equal to the chamfer angle of the outer chamfer angle structure, the pressing surface (bottom surface) of the pressing plate 7 is an arc-shaped surface, and the bottom wall of the top plate 6 and the top wall of the bottom plate 8 are both of an arched structure with an arched middle.
The inner diameter of the pressure bearing pipe 2 is smaller than the outer diameter of the pressure applying pipe 3, and the pressure applying pipe 3 is in socket joint connection with the pressure bearing pipe 2 through the guide of the chamfer angle in the compression process of the energy absorption box. In the connection process, due to the difference of the inner diameter and the outer diameter, the pressing pipe 3 and the pressure bearing pipe 2 have the extrusion and friction effects, and in the compression process, the pressing plate 7 is used for compacting the foam aluminum filler 4 filled in the pressure bearing pipe 2, compacting the foam in the pressure bearing pipe 3, collapsing deformation of the first outer circular pipe 1 and compressing and compacting the foam aluminum in the cavity between the first outer circular pipe 1 and the pressure bearing pipe 2 and the pressure bearing pipe 3 to gradually dissipate energy.
The front energy absorption device of the passenger car of the specific embodiment has the beneficial effects that: 1. the sandwich structure is light and has good shock resistance. The shell of the energy absorption device is of a sandwich structure, the three layers of materials are respectively a stainless steel round pipe, a composite material wrapping layer and an aluminum alloy round pipe, and the inner filling materials are foamed aluminum with different relative densities, so that the overall quality is greatly reduced (improved compared with energy absorption) while the anti-collision strength of the energy absorption device is improved, and the energy saving and emission reduction of a passenger car and the improvement of the power performance of the passenger car are facilitated. 2. The buffer effect is good, the gradient energy absorption is realized, and the process is stable. The inside casing of this energy-absorbing device is the pipe that the continuous gradient of wall thickness changes, and what the inside packing of energy-absorbing device is the foamed aluminum material of gradient change, and these structures all can make pressure be the gradient dissipation at the collision in-process, especially when high-speed collision takes place, can effectively ensure the stability of energy absorption when improving total energy absorption, and this protection and passenger safety's that is favorable to passenger train inner structure protection. 3. The energy absorption effect is good, and the energy dissipation is fast. The energy absorption device utilizes socket connection of the inner pipe wall, deformation of all pipe walls and a compact process of an inner filling material to dissipate energy, and multiple energy absorption mechanisms simultaneously dissipate energy quickly in the collision process, so that protection of an inner structure of a passenger car and protection of passenger safety are facilitated. 4. Stable deformation and controllable failure result. This energy-absorbing device stainless steel pipe and inside aluminum alloy pipe design the guide mechanism that contracts of bursting, be favorable to guiding the deformation of anticollision roof beam like this and contract the direction and control the failure mode of energy-absorbing box for the failure result of energy-absorbing box is controllable, and this is favorable to passenger train inner structure's protection, and then has ensured passenger's safety.
In the energy absorption device for the front part of the passenger car in the specific embodiment, the cross sections of the circular pipe walls of the first outer circular pipe, the pressure bearing pipe and the pressure applying pipe are trapezoidal, and rectangular grooves with equal intervals are arranged to induce the compression direction; the top plate, the bottom plate and the middle pressing plate are in an arch shape; the pressure bearing pipe and the pressure applying pipe are in socket connection in the compression process, and a chamfer is arranged for guiding a socket track; the inner diameter of the pressure bearing pipe is slightly smaller than the outer diameter of the pressure applying pipe; the outer circle pipe of the aluminum alloy is wrapped by three layers of fiber reinforced composite materials with different fiber laying directions; the inner hollow filling presents a foam aluminum filler with gradient change relative density; and adding a second outer circular tube with a collapse guiding direction to the outer layer of the fiber reinforced composite material. In the compression process, energy absorption is carried out through the collapse of the stainless steel and aluminum alloy round tube, the compactness of the foamed aluminum filler, the deformation failure of the fiber reinforced material and the extrusion friction action between the pressure bearing tube and the pressure applying tube. The utility model provides a gradient energy-absorbing box energy-absorbing effect is strong, and is higher than the energy-absorbing, and shock-absorbing performance is good, the striking along energy-absorbing box axial direction that can effectual buffering passenger train received, and the impact force that maximum reduction passenger received plays better guard action to vehicle and crew.
The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited by this description, and all equivalent changes and modifications made within the scope and the specification of the present invention should be covered by the present invention.
Claims (10)
1. The utility model provides a passenger train front portion energy-absorbing device which characterized in that: the aluminum foam packing comprises a tubular part, a middle part, a foam aluminum filler (4), a top plate (6) and a bottom plate (8), wherein the top plate (6) and the bottom plate (8) are fixedly arranged on the top end surface and the bottom end surface of the tubular part respectively; the tubular part comprises a first outer circular tube (1), a fiber reinforced composite material (5) and a second outer circular tube (9), the second outer circular tube (9) is sleeved outside the first outer circular tube (1), and the fiber reinforced composite material (5) is filled between the second outer circular tube (9) and the first outer circular tube (1); the middle part is arranged in the tubular part, and a cavity between the middle part and the first outer circular tube (1) is filled with foamed aluminum filler (4); the middle part comprises a pressure bearing pipe (2), a pressure applying pipe (3) and a pressing plate (7), the top end face of the pressure applying pipe (3) is abutted against the bottom wall of the top plate (6), the bottom end face of the pressure bearing pipe (2) is abutted against the top wall of the bottom plate (8), the pressing plate (7) is arranged between the pressure bearing pipe (2) and the pressure applying pipe (3), and foam aluminum fillers (4) are filled in the pressure bearing pipe (2) and the pressure applying pipe (3).
2. The front energy absorber of a passenger vehicle according to claim 1, wherein: the outer pipe wall of the first outer circular pipe (1) is a cylindrical wall, and the inner diameter of the first outer circular pipe (1) is in gradient change from large to small from top to bottom; and a plurality of first rectangular grooves (11) which are arranged at equal intervals are formed in the pipe walls of the inner side and the outer side of the first outer circular pipe (1).
3. The front energy absorber of a passenger vehicle according to claim 1, wherein: a plurality of layers of fiber reinforced composite materials (5) are arranged between the first outer circular tube (1) and the second outer circular tube (9), and the layering directions of the plurality of layers of fiber reinforced composite materials (5) are different from each other.
4. The front energy absorber of a passenger vehicle according to claim 1, wherein: the relative density of the foamed aluminum filler (4) filled in the cavity between the middle part and the first outer circular tube (1) is changed from top to bottom in a gradient manner from small to large.
5. The front energy absorber of a passenger vehicle according to claim 1, wherein: the foamed aluminum filler (4) filled in the pressure bearing pipe (2) and the pressure applying pipe (3) are in two-stage gradient change, and the relative density of the foamed aluminum filler (4) at the lower part is greater than that of the foamed aluminum filler (4) at the upper part.
6. The front energy absorber of a passenger vehicle according to claim 1, wherein: the pressure-bearing pipe (2) is an aluminum alloy circular pipe with the bottom bearing, the inner pipe wall of the pressure-bearing pipe (2) is a cylindrical wall, and the outer diameter of the pressure-bearing pipe (2) is changed from top to bottom in a gradient manner from large to small; and a plurality of second rectangular grooves (21) which are arranged at equal intervals are formed in the pipe walls of the inner side and the outer side of the pressure bearing pipe (2).
7. The front energy absorber of a passenger vehicle according to claim 1, wherein: the pressure application pipe (3) is an aluminum alloy circular pipe with the top applied with pressure, the outer pipe wall of the pressure application pipe (3) is a cylindrical wall, and the inner diameter of the pressure application pipe (3) is changed from top to bottom in a gradient manner from small to large; and a plurality of third rectangular grooves which are equidistantly arranged from top to bottom are formed in the pipe walls of the inner side and the outer side of the pressure applying pipe (3).
8. The front energy absorber of a passenger vehicle according to claim 1, wherein: a first outer chamfering structure is arranged on the outer edge of the pressure applying pipe (3), a second outer chamfering structure is also arranged on the outer wall of the pressure plate (7), and the first outer chamfering structure and the second outer chamfering structure are arranged in an aligned mode; an inner chamfer structure is arranged on the inner edge of the top of the pressure bearing pipe (2); the second outer chamfer structure is located within the inner chamfer structure.
9. The front energy absorber of a passenger vehicle according to claim 1, wherein: the pressing surface of the pressing plate (7) is an arc surface, and the bottom wall of the top plate (6) and the top wall of the bottom plate (8) are both of an arched structure with an arched middle part.
10. The front energy absorber of a passenger vehicle according to claim 1, wherein: the second outer circular tube (9) is a stainless steel outer circular tube with multiple layers and multiple rows of through holes distributed in an array mode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922347487.1U CN211417184U (en) | 2019-12-24 | 2019-12-24 | Front energy absorption device of passenger car |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922347487.1U CN211417184U (en) | 2019-12-24 | 2019-12-24 | Front energy absorption device of passenger car |
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| CN211417184U true CN211417184U (en) | 2020-09-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110949297A (en) * | 2019-12-24 | 2020-04-03 | 华侨大学 | Front energy absorber of passenger car |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110949297A (en) * | 2019-12-24 | 2020-04-03 | 华侨大学 | Front energy absorber of passenger car |
| CN110949297B (en) * | 2019-12-24 | 2023-10-31 | 华侨大学 | Front energy absorber for passenger car |
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