CN115467272A - Energy absorption method for extrusion port and anti-collision pad structure - Google Patents
Energy absorption method for extrusion port and anti-collision pad structure Download PDFInfo
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- CN115467272A CN115467272A CN202211285812.6A CN202211285812A CN115467272A CN 115467272 A CN115467272 A CN 115467272A CN 202211285812 A CN202211285812 A CN 202211285812A CN 115467272 A CN115467272 A CN 115467272A
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- 238000001125 extrusion Methods 0.000 title claims abstract description 95
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 49
- 230000006835 compression Effects 0.000 claims abstract description 41
- 238000007906 compression Methods 0.000 claims abstract description 41
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims description 30
- 238000010008 shearing Methods 0.000 claims description 20
- 230000003139 buffering effect Effects 0.000 claims description 17
- 238000005265 energy consumption Methods 0.000 claims description 8
- 239000006096 absorbing agent Substances 0.000 claims description 7
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- 238000010276 construction Methods 0.000 abstract description 12
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/14—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact specially adapted for local protection, e.g. for bridge piers, for traffic islands
- E01F15/145—Means for vehicle stopping using impact energy absorbers
- E01F15/146—Means for vehicle stopping using impact energy absorbers fixed arrangements
Abstract
The application provides an extrusion port energy absorption method and an anti-collision cushion structure. It comprises the following steps: the crash pad comprises a crash pad main body which can slide backwards to absorb impact energy due to vehicle impact and a rear end inclined strut arranged at the rear end of the crash pad main body. This application sets up shear force extrusion power consumption part in the guider of crashproof pad main part lower part, compression energy-absorbing subassembly between each frame construction of crashproof pad main part absorbs the impact energy jointly in coordination, and after the crashproof pad main part is strikeed to the complete compression, the rear end bracing top is stirred to the hypsokinesis deflection that further utilizes last section frame, energy-absorbing buffer material through in the compression rear end bracing further absorbs the impact energy, provide the secondary energy-absorbing through energy-absorbing buffer materials such as invasion foamed aluminium, the energy-absorbing effect is better. When the anti-collision cushion structure is adopted to protect a 1.5-ton car from collision at a speed of 100km/h, the required length of the anti-collision cushion structure can be shortened from 6m to 4m, the area of a road diversion area is greatly compressed, and the anti-collision cushion structure can be flexibly arranged at the front end of the diversion area.
Description
Technical Field
The application relates to the technical field of highway safety protection, in particular to an extrusion opening energy absorption method and an anti-collision cushion structure.
Background
The highway has complex vehicle types and high speed, and the guardrail ends at the inlet and the outlet of the highway are often collided by vehicles, so that casualty accidents are easy to happen. In order to alleviate the problem, a buffering anti-collision facility is generally required to be arranged at the front end of other obstacles such as an exit triangular area, a toll island front end and a tunnel portal of a highway or an urban road so as to reduce the severity of an accident, and warning colors and graphic symbols are arranged on the surface of the buffering anti-collision measure for warning and guiding.
However, in the existing buffer facilities meeting the TS-level protection standard, when providing protection for a car with a speed of 1.5 tons and 100km/h, a crash pad structure with a front-rear distance of 6m is required to be arranged, when protecting a car with a speed of 1.5 tons and 80km/h, a crash pad structure with a length of 4m is required to be arranged, and when protecting a car with a speed of 1.5 tons and 60km/h, a crash pad structure with a length of 2.5 m is required to be arranged. That is, the existing buffering arrangement needs to reserve at least 20 square meters of buffering guide area for each lane at the front end of the diversion area such as a toll station to realize the protection effect. Such buffer structure has higher requirement to the installation place, often is restricted to place hardware condition and is difficult to satisfy the protection demand. Therefore, there is a need for a crash pad cushion structure having a shorter installation length.
Disclosure of Invention
This application is to prior art's not enough, provides an extrusion mouth energy-absorbing method and crashproof pad structure, and the crashproof pad structure of this application can the secondary extrusion, fully absorbs the striking energy through crashproof pad inner structure to shorter installation length high-efficient energy-absorbing, compare and have better buffering effect in current buffer, energy-absorbing efficiency is higher, can compress material cost and installation cost when providing higher safety protection ability. The safety protection level of the corresponding road section can be effectively improved by applying the application to positions such as the branch and confluence triangular ends. The technical scheme is specifically adopted in the application.
First, in order to achieve the above object, there is provided an energy-absorbing crash pad structure for a squeeze port, including: the crash pad main body is arranged on the outer side of the lane along the vehicle advancing direction, a guide device is arranged in the crash pad main body, a shear extrusion energy dissipation component is arranged in the guide device, the crash pad main body slides backwards along the guide device in the vehicle impact process and is compressed, and the crash pad main body and the shear extrusion energy dissipation component cooperatively extrude and absorb impact energy; the rear end inclined strut is arranged at the rear end of the anti-collision pad main body in a compressible mode, is compressed backwards in the backward sliding process of the anti-collision pad main body, synchronously extrudes the energy-absorbing buffer material arranged in the rear end inclined strut, and absorbs the impact energy again.
Optionally, the crush-opening energy-absorbing crash pad structure as described in any one of the above, wherein the shear-crush energy-consuming component includes: the extrusion block is arranged at the front part of the guide device and synchronously slides backwards along with the main body of the crash pad in the vehicle impact process; an extrusion port fixedly disposed at a rear portion of the guide; the energy-absorbing buffer material is filled in the guide device and is arranged between the extrusion block and the extrusion port; in the vehicle impact process, the front end of the energy-absorbing buffer material is extruded by the extrusion block and is compressed backwards along the guide device with the crash pad main body synchronously along the guide device to absorb impact energy, and the rear end of the energy-absorbing buffer material is sheared and crushed in the process of pressing the extrusion port backwards, is extruded by the rear end of the extrusion port and absorbs the impact energy together.
Optionally, the crush-opening energy-absorbing crash pad structure as described in any one of the above, wherein the rear-end diagonal brace includes: the bottom end of the bottom outer sleeve is fixedly arranged on the rear side of the crash pad main body, and the energy-absorbing buffer material is filled at the lower part of the bottom outer sleeve; the top of the upper inner sleeve is arranged at the rear end of the crash pad main body, and the bottom of the upper inner sleeve is inserted into the bottom outer sleeve; in the vehicle collision process, the upper inner sleeve slides backwards along with the crash pad main body and synchronously extrudes and invades the energy-absorbing buffering material backwards along the bottom outer sleeve to consume collision energy.
Optionally, the crush opening energy-absorbing crash pad structure as described in any one of the above, wherein the energy-absorbing cushion material is foamed aluminum or rubber.
Optionally, the crash pad body includes a plurality of frame structures disposed on the guiding device along the vehicle traveling direction, and a compression energy-absorbing assembly is disposed between the frame structures, and the compression energy-absorbing assembly deforms backward along the guiding device during the vehicle collision to absorb the collision energy.
Optionally, the energy-absorbing crash pad structure with the extrusion opening is as described above, wherein the front end of the extrusion block is fixedly disposed at the bottom of the frame structure at the front end of the crash pad main body, and slides along the inside of the guide device when the vehicle is impacted; the rear end of the extrusion block is provided with a pushing and blocking component, the size of the end face of the pushing and blocking component is close to the size of the inner periphery of the guide device, and the pushing and blocking component uniformly extrudes the front end face of the energy-absorbing buffering material in the guide device along with the backward movement of the frame structure at the front end of the crash pad main body.
Optionally, the extrusion port energy-absorbing crash pad structure as described above, wherein both the front end and the rear end of the extrusion port are provided with through opening structures, the inner wall of the extrusion port is provided with shearing ribs intruding into the energy-absorbing buffer material, and the shearing ribs shear the energy-absorbing buffer material during the process that the pushing component is pushed backward.
Optionally, as in any of the above, the crush-opening energy-absorbing crash pad structure, wherein the compression energy-absorbing component is an energy-absorbing box with an inward concave arc-shaped energy-absorbing surface, or is formed by splicing the following components: the shearing seat barrel is fixed on one side of the frame structure and provided with an opening facing to the adjacent frame structure, and a shearing notch parallel to the guide device is formed in the edge of the opening of the shearing seat barrel; and the end part of the extrusion cylinder is contracted and embedded into the opening of the seat tube to be cut, and is pushed into and extrudes the seat tube to be cut in the vehicle impact process, and the cut opening consumes collision energy.
Optionally, in the energy-absorbing crash pad structure with an extrusion opening, an inward concave folded edge is further disposed on the periphery of the extrusion container, and after the extrusion container completely pushes into the barrel of the shear seat to completely open the shear opening, the extrusion container further contracts inward along the inward concave folded edge to deform and absorb collision energy.
Meanwhile, in order to achieve the above object, the present application also provides a method for absorbing energy through an extrusion port, which is applied to the crash pad structure described in any one of the above, including the steps of: in the vehicle collision process, the compression energy absorption components between the frame structures of the main body of the crash pad are extruded and deformed to absorb collision energy; and then, the main body of the anti-collision cushion slides backwards to drive the rear end inclined strut at the rear end of the main body of the anti-collision cushion to turn over, synchronously extrude the energy-absorbing buffer material connected with the rear end inclined strut, and absorb the impact energy again.
Advantageous effects
The application provides an extrusion port energy absorption method and an anti-collision cushion structure. It includes: the crash pad comprises a crash pad main body which can slide backwards to absorb impact energy due to vehicle impact and a rear end inclined strut arranged at the rear end of the crash pad main body. This application sets up shear force extrusion power consumption part in the guider of crashproof pad main part lower part, compression energy-absorbing subassembly between each frame construction of crashproof pad main part absorbs the impact energy jointly in coordination, and after crashproof pad main part is strikeed to complete compression, the hypsokinesis deflection that further utilizes last section frame stirs rear end bracing top, make in energy-absorbing buffer material is inserted to the interior sheathed tube bottom in rear end bracing upper portion, further absorb the impact energy through compression energy-absorbing buffer material. This application can be invaded atress such as foamed aluminum or rubber by the vehicle striking and can not become the indiscriminate energy-absorbing buffer material who flies of fragment and provide secondary energy-absorbing, and the energy-absorbing effect is better. When the crash pad structure of the application is adopted to protect a 1.5-ton car from 100km/h speed collision, the required length of the crash pad structure can be shortened to 4m from 6m, the required reserved area of a buffering guide area is greatly compressed, and the crash pad structure can be flexibly installed at the front end of various flow guide areas to provide warning guide and TS-level protection.
In addition, the crash pad main body of the application is internally provided with compression energy absorption assemblies respectively between all levels of frame structures. The compression energy absorption assembly is formed by combining a shear seat barrel and an extrusion barrel which are matched in an inserted manner. Two ends of the shear seat barrel and the extrusion barrel are respectively fixed on the adjacent two-stage frame structures through the anchoring plates. In the process that the crash pad main body is impacted by a vehicle, all levels of frame structures slide backwards step by step along the guide device. In the sliding process, an extrusion cylinder welded between the anchoring plates on the adjacent frame structures jacks into the shear seat cylinder. The shearing gap arranged at the edge position of the end opening of the shearing seat barrel is squeezed and sheared by the end part of the extrusion barrel to consume collision energy until the shearing seat barrel is completely unfolded. At the moment, the end part of the extrusion cylinder is directly abutted against the anchoring plate welded on the back side of the seat tube to be cut, the end part of the extrusion cylinder can further extrude the concave folding edge arranged on the periphery of the extrusion cylinder, further energy can be absorbed through the overturning compression of the concave folding edge, the vehicle impact energy is consumed, and the extrusion cylinder and the seat tube to be cut are completely compressed and fully absorbed. The compression energy-absorbing assembly simultaneously absorbs energy by utilizing shearing force and compression deformation between a shear seat barrel and an extrusion barrel in the vehicle impact process, can effectively compress and absorb the structural size required by the same impact energy, compresses the length size of the structure of the crash pad, and shortens the mounting space required by the structure of the crash pad.
The shear extrusion energy dissipation component in the application is filled with foamed aluminum or rubber in the guiding device to serve as an energy absorption buffering material. In the process of backward compression deformation of the whole anti-collision cushion structure, the extrusion block fixed at the bottom of the front-end frame structure firstly pushes the foamed aluminum or rubber and other materials in the guide rail to move backward, and primary energy absorption is realized by compressing the foamed aluminum or rubber and other materials. And then, because the rear end of the guide rail is not provided with a seal, foamed aluminum or rubber and the like can extrude shearing ribs from the interior of the port of the guide rail, and the tail end of the guide rail is extruded against shearing force, so that the shearing force extrusion energy consumption part can also extrude the foamed aluminum or rubber and the like through the shearing ribs to realize secondary energy absorption. The shear ribs may be provided on the inner wall surfaces of the left, right, and lower sides of the extrusion port. Meanwhile, the materials such as foamed aluminum or rubber are compressed and sheared, so that most impact kinetic energy can be absorbed when the anti-collision cushion is impacted to be finally and completely compressed. At this moment, rear end frame structure hypsokinesis warp, can further compress the tip bracing through rear end frame structure top, extrudees inside foamed aluminum or rubber etc. through the tip bracing and realizes the energy-absorbing once more, promotes the guard effect to support the crash pad main part and avoid it to break away from the guider rear end.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application.
Drawings
The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application and not limit the application. In the drawings:
FIG. 1 is a schematic illustration of the operation of a first crush-port energy-absorbing crash pad construction of the present application;
FIG. 2 is a top view of a first crush-port energy absorbing crash pad construction of the present application;
FIG. 3 is a schematic view of a nose end structure of an energy absorbing crash pad of the present application;
FIG. 4 is a schematic view of a frame structure in the crush port energy absorbing crash pad of the present application;
FIG. 5 is a schematic view of a compression energy absorber assembly used in a first crush port energy absorbing crash pad construction according to the present application;
FIG. 6 is a schematic view of a compression energy absorber assembly used in a second crush port energy absorbing crash pad construction of the present application;
FIG. 7 is a schematic view of the second embodiment of the present application showing the installation of concave energy absorbing surface in the energy absorbing crash pad structure;
FIG. 8 is a schematic illustration of the operation of a second crush-port energy-absorbing crash pad construction of the present application;
FIG. 9 is a top view of a second crush-port energy-absorbing crash pad construction of the present application;
in the drawings, 1 denotes a crash pad main body; 11 denotes a guide; 111 a frame bushing; 112 a frame support column; 113 denotes a slide base plate; 12, a compression energy absorber assembly; 121 denotes a shear socket barrel; 122 represents a clipped gap; 123 denotes a container; 124, inner concave fold; 125, a three-wave beam plate; 126 denotes a concave arc energy absorbing surface; 127 denotes a connection plate; 128 denotes an inwardly concave curved energy absorbing tube; 129 denotes a guide groove; 13 denotes a frame structure; 130 denotes a slider; 131 denotes a front end frame; 132 denotes a rear end frame; 133, a rear end weld floor; 134 denotes a front end anchor; 135 denotes an anchor bolt; 136 denotes a frame side post; 137 denotes a lower lateral support; 138 denotes a reinforcing bar; 139 denotes a frame center post; 14 denotes a nose; 141 an arc plate; 142 denotes a side plate; 143 denotes an energy absorbing tube; 144 denotes a plate rib; 15 denotes a connecting bolt; 2 denotes a rear end sprag; 21 denotes a bottom outer sleeve; 22 denotes an upper inner sleeve; 3 represents an energy absorbing buffer material; 4 represents a shear extrusion energy dissipation component; 41 denotes an extrusion block; 42 denotes an extrusion port; 43 denotes shear ribs; and 5 denotes the ground.
Detailed Description
In order to make the purpose and technical solutions of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the application without any inventive step, are within the scope of protection of the application.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The meaning of "and/or" as used herein is intended to include both the individual components or both.
The meaning of "inside and outside" in the application refers to that the direction from the peripheral guide plate to the center of the compression energy-absorbing component inside the crash pad is inside, and vice versa, relative to the crash pad structure itself; and not as a specific limitation on the mechanism of the device of the present application.
The terms "left and right" as used herein refer to the left side of the user and the right side of the user as the user is facing the crash pad structure in the direction of travel, rather than the specific limitations on the mechanism of the device of the present application.
The term "connected" as used herein may mean either a direct connection between components or an indirect connection between components through other components.
The meaning of "up and down" in this application means that the direction from the ground to the top of the support frame is up, or down, when the user is facing the crash pad structure, and not specifically limited to the mechanism of the device of this application.
The meaning of "preceding, back" in this application means that when the vehicle along the driving direction collision avoidance cushion structure, each section of support frame slip direction of collision avoidance cushion structure is along guider from preceding backward slip.
FIG. 1 is an extruded oral energy absorbing crash pad structure according to the present application, comprising:
the collision pad comprises a collision pad main body 1, a guide device 11 and a shear extrusion energy consumption component 4, wherein the collision pad main body is arranged on the outer side of a lane along the advancing direction of a vehicle, the shear extrusion energy consumption component 4 is arranged in the guide device 11, the collision pad main body slides backwards along the guide device in the vehicle collision process and is compressed, and the collision pad main body and the shear extrusion energy consumption component 4 cooperatively extrude and absorb collision energy;
and the rear end inclined strut 2 is arranged at the rear end of the crash pad main body in a compressible manner, is compressed backwards in the backward sliding process of the crash pad main body, synchronously extrudes the energy-absorbing buffer material 3 arranged in the rear end inclined strut, and absorbs the impact energy again.
Therefore, in the collision-proof cushion structure, the compression energy-absorbing component 12 and the shear force extrusion energy-consuming component 4 between the frame structures of the collision-proof cushion main body 1 can cooperatively extrude and deform to absorb collision energy in the vehicle collision process; and then, the main body 1 of the crash pad slides backwards to drive the rear end inclined strut 2 at the rear end of the main body to turn over, synchronously extrude the energy-absorbing buffer material 3 connected with the rear end inclined strut, absorb the impact energy again, and realize the TS-level protection effect in a shorter size through the consumption of the impact energy twice.
The compression energy-absorbing component 12 and the shear extrusion energy-absorbing component 4 between the frame structures of the crash pad main body cooperatively extrude and absorb impact energy
Referring specifically to fig. 2, the crash pad body 1 of the present application may be composed of a nose end 14, several stages of frame structures slidably disposed on a guide 11 in a vehicle traveling direction, and a compression energy absorbing assembly 12 disposed between the stages of frame structures. The frame structures are arranged along the guide device, and can be connected to a rear end frame 132 at the tail end of the crash pad main body 1 through a compression energy absorption assembly 12 step by step from a front end frame 131 facing the driving direction of the vehicle to form a whole.
The nose 14 is arranged at the foremost position of the crash pad body 1, as shown in fig. 3. Its whole structure is formed through four steel sheet welding, includes: the arc plate 141 is formed by bending with a certain radius, the left side and the right side of the arc plate 141 are respectively bent inwards and horizontally with a certain length along the driving direction, the side plate 142 is welded at the two sides of the arc plate 12 and is basically parallel to the edge of the lane, the side plate 142 can be made of a three-wave beam plate, and two rows of bolt holes are generally arranged on the side plate 142 for connecting a frame structure at the rear end. Four rows of transverse energy-absorbing pipes 143 can be respectively welded in the concave surface of the arc plate 141 from bottom to top, and the energy-absorbing pipes 143 are jointed and welded with the arc plate 141. The middle position of the arc plate 141 can be vertically welded with 1U rib, the middle of the U rib can be provided with an upper row of bolt holes and a lower row of bolt holes, and each row of bolt holes is provided with 1 bolt hole for connecting the front end frame 131 through the connecting bolt 15. The left side and the right side of the U rib can be further welded with a plate rib 144 in the surrounding area of the arc plate 141, two rows of bolt holes can be arranged on the plate rib 144, and each row is provided with 1 bolt hole to fix the arc plate 141 on the front side of the front end frame 131.
Each stage of the frame structure 13 on the guide means 11 may be arranged in a similar manner to that shown in figure 4. The whole structure is manufactured by welding channel steel, steel pipes and steel plates. The upper part of each level of frame structure can be provided with an upper transverse support and a lower transverse support with the same size. The upper and lower lateral supports 137 are made of channel steel, each having a downward opening, and are disposed in parallel up and down with the lower lateral supports 137. On the vertical surfaces of the upper transverse support and the lower transverse support along the front and back directions of the guide device, 4 through long bolt holes are respectively arranged for installing the compression energy-absorbing assembly 12. The frame side columns 136 can be welded to the left and right sides of the upper and lower lateral supports 137, respectively, and the frame side columns 136 can be inclined inward by a certain angle to form the frame support columns 112. The frame side posts 136 are made of channel steel and have opposite openings, and the outer side of the frame side posts 136 can be bolted to the three-wave beam 125 to provide guidance for an impacting vehicle. 2 frame center pillars 139 with a certain distance can be further welded between the upper transverse support and the lower transverse support 137, and the frame center pillars 139 can be made of channel steel and are provided with openings which are opposite. Frame sleeves 111 made of steel pipes are welded on the inner sides of the frame support columns 112 below the frame center pillars 139 respectively. The opening of the frame sleeve 111 is arranged in the direction of the guide axis. The front end and the rear end of the guiding device 11 can be respectively anchored on the ground, and the frame sleeves 111 at the bottom of each level of frame structures 13 are respectively sleeved on the round steel tubes of the middle guide rail of the guiding device 11 so as to limit each level of frame structures to only slide along the traveling direction. Triangular structural reinforcing ribs 138 may be welded inside the frame support posts 112 and above the frame sleeves 111 to ensure stability of each frame structure 13. The bottom end of the frame supporting column 112 can be welded with a sliding bottom plate 113, and the inner side, the outer side and the back side of the sliding bottom plate 113 can be arranged to be folded upwards by a certain angle, so that the frame structure 13 is convenient to slide backwards along the round steel pipes of the guide rails under the impact of a vehicle.
In a first implementation, the compression energy absorber assembly 12 between each stage of the frame structure can be configured as shown in FIG. 5, consisting of a shear socket barrel 121 and a squeeze barrel 123. The scissor seat barrel 121 is fixed on one side of the frame structure through an anchoring plate, the end surface of the scissor seat barrel is provided with an opening facing the adjacent frame structure, and the edge of the opening of the scissor seat barrel can be provided with a scissor notch 122 parallel to the guiding device 11. The container 123 is secured to the other side of the frame structure by an anchor plate and the ends of the container 123 may be arranged to be retracted inwardly to fit within the opening of the socket cylinder 121. The compression energy-absorbing component extrudes backwards along the guide device to deform and absorb impact energy in the vehicle impact process, the extrusion cylinder 123 is pushed into the shear-receiving seat cylinder 121 under the guidance of the sliding of the frame structure, the extrusion and shearing shear-receiving openings 122 consume the impact energy, and the impact energy is buffered and absorbed step by step.
Generally, the compression energy absorbing assembly 12 between each stage of the frame structure may be provided with a container located in front of the impact surface and a shear socket container 121 located at the rear end of the impact surface. Thus, when a vehicle impacts the nose of the crash pad body 1, the arc plate 141, the energy absorbing tube 143, and the plate rib 144 of the nose itself provide cushioning, and then compress the sheared seat tubes of the compression energy absorbing assemblies 12 step by step backwards.
The shear socket barrel 121 and the extrusion barrel 123 can be both realized by round steel pipes. The diameter of the extrusion steel cylinder is generally set to be larger than the inner diameter of the sheared steel cylinder, and the shearing notch 123 of the extrusion opening can be set to be an oblique opening, so that the sheared steel cylinder is easier to jack and shear.
In order to further dissipate the impact energy, the present application may further provide a concave fold 124 at the outer circumference of the container 123 at each stage. Therefore, when the extrusion cylinder 123 is completely pushed into the shear seat cylinder 121, the back anchoring plate of the shear seat cylinder 121 is abutted to completely spread the shear gap 122, and then the inner concave folding edge 124 along the longitudinal direction can be further contracted and deformed inwards to further absorb the collision energy.
In other implementations, the compression energy absorber assembly 12 between each level of frame structure can also be configured as shown in FIG. 7, implemented with an energy absorber box having concave curved energy absorbing surfaces as shown in FIG. 6. The whole energy absorption box structure is mainly formed by welding the concave arc-shaped energy absorption surface 126 and the concave arc-shaped energy absorption pipe 128. The concave arc energy absorbing tube 128 is bent to a certain radius and vertically bent to a certain length on both sides. The middle of the concave arc-shaped energy absorbing surface 126 is provided with a concave structure, the front side edge and the rear side edge of the concave arc-shaped energy absorbing surface are respectively provided with four bolt holes for mounting connecting plates 127, and the concave arc-shaped energy absorbing surface 126 and the concave arc-shaped energy absorbing pipe 128 are fixed on transverse supporting channel steel of two adjacent stages of frame structures through the connecting plates 127. The bending radiuses of the concave arc-shaped energy absorption surface 126 and the concave arc-shaped energy absorption pipe 128 are kept consistent, and the periphery of the concave arc-shaped energy absorption pipe 128 is completely welded on the concave surface of the concave arc-shaped energy absorption surface 126 in a fitting mode. A deformation guide groove may be provided in the middle of the concave energy absorbing tube 128 welded to the concave surface of the concave arc energy absorbing surface 126. The concave arc-shaped energy absorption surfaces 126 in all the sections of the first 4-level frame structure can be arranged up and down along the backrest, and 3 concave arc-shaped energy absorption pipes 128 can be respectively welded on each concave arc-shaped energy absorption surface 126; 4 concave arc energy absorption pipes 128 can be respectively welded on concave arc energy absorption surfaces 126 arranged back to back on the upper side and the lower side of the 5 th-level frame structure, 5 concave arc energy absorption pipes 128 are respectively welded on the upper side and the lower side of the 6 th section and the 7 th section, and 6 concave arc energy absorption pipes 128 are respectively welded on the upper side and the lower side of the last 1 section. For guaranteeing the even atress of each indent cambered surface energy-absorbing pipe 128, 1 connecting plate 127 can be connected respectively to the front and back both ends that this application can set up all indent cambered surface energy-absorbing pipes 128 on each indent cambered surface energy-absorbing face 126, and connecting plate 127 and indent cambered surface energy-absorbing pipe 128 are all fully welded, can further set up 4 bolt holes on the connecting plate 127 so that realize fixedly on the channel-section steel that transversely supports the frame construction connecting plate 127 bolted connection.
The utility model provides a frame construction at different levels accessible assembly forms the crash pad main part as follows: the front end frame 131 and the front end anchor 134 are horizontally placed on the road surface, and the circular steel tubes forming the guide rails in the guide device sequentially pass through all levels of frame structures until the circular steel tubes penetrate through the frame sleeves 111 at the bottom end of the rear end frame 132, so that guidance is provided for all levels of frame structures. The slide bottom plate 113 at the bottom of each stage of the frame structure may be provided with its non-flanged side facing the front nose 14. The front end frame 131 may be provided with bolt holes for connection to the nose. The two guide rails are respectively provided with a front end anchor 134 on the front end ground 5 thereof and a rear end welding base plate 133 on the rear end ground 5 thereof, so that the two guide rails are fixed between the front end anchor 134 and the rear end welding base plate 133 in the traveling direction by anchor bolts 135. The frame structures may be placed at regular intervals. The sides of each frame structure may utilize a three-wave beam 125 as a guide plate, each guide plate may be provided with guide grooves 129 parallel to the guide rails transversely to the direction of travel. The outer side of each frame structure may be bolted to a slide 130, one end of which is disposed through the guide plate in the guide channel to provide guidance to the frame structure. The guide plates outside the frame structures of all stages are sequentially overlapped, and the rear end of each guide plate can be also provided with an inward folded edge so as to limit the limit position of the backward sliding of the guide plate. The entire crash pad body frame is now fully secured. The nose 14 is placed at the foremost end, and the side plates 142 at both sides of the nose 14 are connected with the guide plate and the frame structure at the foremost end through bolts. The frame structures at all levels can be sequentially arranged from less to more according to the number of the energy-absorbing pipes. In the frame structure at the foremost end, the compression energy-absorbing components 12 such as the energy-absorbing box can be directly connected between the frame at the front end and the nose end 6 through bolts, and the other compression energy-absorbing components 12 at all levels are sequentially connected with two adjacent frame structures to form the whole crash pad main body.
In the process of absorbing the impact energy through the compression energy-absorbing assemblies 12 at different levels, the crash pad structure of the present application can further consume the impact kinetic energy through the rear end inclined strut 2 at the end of fig. 8 or fig. 9 and the shear extrusion energy-consuming component 4 arranged inside the guide device 11, so as to ensure the safety of the rear-side personnel equipment. The shear extrusion dissipative element 4 can be arranged directly inside the guiding device 11, comprising:
the extrusion block 41 can be arranged at the bottom of the front end frame 131 and arranged at the front part of the guide rail of the guide device 11, so that the extrusion block can synchronously slide backwards along with the sliding of the frame structure of the crash pad main body 1 in the vehicle impact process, and pushes the energy-absorbing buffer material filled in the guide rail to realize energy absorption;
the rear part of the guide rail structure can be further provided with an open extrusion port 42 which is fixedly arranged at the rear end of the guide device 11, and the extrusion port 42 can be arranged to be penetrated in the front and back direction but is provided with a corresponding damping structure on the inner wall to prevent the energy-absorbing buffering material from directly sliding out;
an energy absorbing and buffering material 3 filled in the guide device 11 and disposed between the extrusion block 41 and the extrusion port 42;
therefore, in the vehicle collision process, the front end of the energy-absorbing buffering material 3 is extruded by the extrusion block 41 and is compressed backwards along the guide rail of the guide device 11 with the crash pad main body 1 synchronously, so as to absorb collision energy, meanwhile, the rear end of the energy-absorbing buffering material 3 can be sheared and broken by the damping structure on the inner wall of the extrusion port in the process of pushing backwards the extrusion port 42, is extruded by the rear end of the extrusion port 42, and is compressed together with the compression energy-absorbing assembly 12 in the crash pad main body 1, so as to synchronously absorb the collision energy in a coordinated manner.
Toppling over for blockking the crashproof pad main part upset backward, this application can set up the rear end bracing at its rear side, and this rear end bracing can specifically constitute by following part assembly:
the bottom end of the bottom outer sleeve 21 is fixedly arranged on a rear end welding bottom plate 133 at the rear side of the crash pad main body in a welding mode or a bolt connection mode, and the energy-absorbing buffer material 3 is filled at the lower part of the bottom outer sleeve 21;
the top of the upper inner sleeve 22 is installed at the rear end of the crash pad main body 1 through bolts or direct welding, and the outer diameter of the upper inner sleeve is smaller than the inner diameter of the bottom outer sleeve so that the bottom of the upper inner sleeve is inserted into the bottom outer sleeve 21;
thus, during a vehicle collision, the upper inner tube 22 is driven by the rear end frame 132 and pushed rearward along the bottom outer tube 21 to intrude into the energy absorbing and cushioning material 3, while sliding rearward along the crash pad body 1, thereby consuming collision energy.
The bottom outer sleeve 21 and the energy-absorbing buffer material filled in the guide rail structure can be made of foamed aluminum or rubber and other materials which cannot be changed into fragments to fly randomly under stress.
When the shear extrusion energy consumption component 4 is specifically arranged, the front end of the extrusion block 41 can be fixedly arranged at the bottom of the front end frame structure of the crash pad main body 1 through bolts or welding, the periphery of the extrusion block 41 is closed by a guide rail and provides backward sliding guidance so as to slide along the inside of the guide device 11 under the driving of the front end frame 131 during vehicle collision;
the rear end of the extrusion block 41 can be provided with a pushing and blocking component which is approximately vertically arranged, the size of the end face of the rear end of the pushing and blocking component can be set to be close to the size of the inner circumference of the guiding device 11, the pushing and blocking component is attached to the inner wall of the guide rail, the front end face of the energy-absorbing buffer material 3 in the guiding device 11 is evenly extruded along with the backward movement of the frame structure at the front end of the crash pad main body 1, the impact stress is evenly applied to the energy-absorbing buffer material, and the energy-absorbing buffer effect is realized. The pushing and blocking component and the connecting component of the front end of the extrusion block and the front end frame can be connected through a wedge-shaped connecting block. The wedge-shaped connecting block can be longitudinally arranged to be thin, and forms a shape close to a barbell with the pushing stop components and the connecting components at two ends.
In the shear extrusion energy consumption component 4, both the front end and the rear end of the extrusion port 42 can be set to be open structures which are communicated with each other, and the inner wall of the extrusion port 42 can be provided with shear ribs 43 which intrude into the energy absorption buffer material 3. The shearing ribs 43 can compress the foamed aluminum in the process that the pushing and blocking part is pressed against the foamed aluminum material backwards, the foamed aluminum is sheared by the end parts of the shearing ribs 43 to realize energy absorption and buffering, and meanwhile, the foamed aluminum is prevented from directly sliding out of the guide rail. In the vehicle collision process, on one hand, the compression crash pad main body 1 absorbs energy through the compression energy absorption component 12 in the crash pad main body, and on the other hand, the extrusion block extrudes the energy absorption buffer material 3 in the guide rail to realize energy absorption and buffering. When compression crash pad main part 1 extrudeed bottommost, support in the inside foamed aluminum realization of rear end outer tube 21 of rear end frame rear portion bracing can further realize the energy-absorbing once more through the extrusion bottom to further consume vehicle striking kinetic energy, realize the effective protection to rear end personnel's equipment through shorter crash pad structure.
Compared with the existing anti-collision cushion structure with the buffering facility reaching the TS-level protection standard exceeding 6m, the anti-collision cushion structure can effectively absorb impact energy through the transmission lever, thereby reducing the area of a road surface diversion area, reducing land acquisition, reducing the construction difficulty of the diversion area, reducing the construction cost, and enabling the connecting radius of a ramp and a main line to be smaller and smoother. For a vehicle in driving, the crash pad is also a barrier, and the longer the crash pad is, the larger the impact factor on driving safety, so that a driver can cause an accident because the longer the crash pad is, the larger the impact factor on driving safety is. The invention can effectively increase the visual range by reducing the buffer protection structure, thereby increasing the driving safety. In addition, this application still can further set up water conservancy diversion reflective membrane at the front end of crash pad structure to produce initiative protective effect to the vehicle.
The above are merely embodiments of the present application, and the description is specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the protection scope of the present application.
Claims (10)
1. The utility model provides an energy crashproof pad structure is inhaled to extrusion mouth which characterized in that includes:
the collision pad comprises a collision pad main body (1) which is arranged on the outer side of a lane along the advancing direction of a vehicle, wherein a guide device (11) is arranged in the collision pad main body, a shear extrusion energy consumption component (4) is arranged in the guide device (11), the collision pad main body slides backwards and compresses along the guide device in the vehicle collision process, and the collision pad main body and the shear extrusion energy consumption component (4) cooperatively extrude and absorb collision energy;
and the rear end inclined strut (2) is arranged at the rear end of the crash pad main body in a compressible manner, is compressed backwards in the backward sliding process of the crash pad main body, synchronously extrudes the energy-absorbing buffer material (3) arranged in the rear end inclined strut, and absorbs the impact energy again.
2. The crush-port energy-absorbing crash pad structure as recited in claim 1, wherein the shear-crush energy-dissipating component (4) comprises, disposed inside a guide (11):
the extrusion block (41) is arranged in front of the guide device (11) and synchronously slides backwards along with the crash pad main body (1) in the vehicle collision process;
a pressing port (42) fixedly provided at the rear of the guide (11);
an energy-absorbing cushion material (3) filled in the guide device (11) and disposed between the extrusion block (41) and the extrusion port (42);
in the vehicle impact process, the front end of the energy-absorbing buffer material (3) is extruded by the extrusion block (41) and is synchronously compressed backwards along the guide device (11) with the crash pad main body (1) to absorb impact energy, the rear end of the energy-absorbing buffer material (3) is sheared and broken in the process of being pressed backwards against the extrusion port (42), and is extruded by the rear end of the extrusion port (42) to jointly absorb the impact energy.
3. The crush port energy absorbing crash pad structure of claim 1, wherein the rear end brace comprises:
the bottom end of the bottom outer sleeve (21) is fixedly arranged on the rear side of the crash pad main body, and the energy-absorbing buffer material (3) is filled at the lower part of the bottom outer sleeve (21);
the top of the upper inner sleeve (22) is arranged at the rear end of the crash pad main body (1), and the bottom of the upper inner sleeve is inserted into the bottom outer sleeve (21);
during the vehicle collision, the upper inner sleeve (22) slides backwards along with the crash pad main body (1) and is synchronously extruded backwards along the bottom outer sleeve (21) to invade the energy-absorbing buffer material (3) to consume collision energy.
4. The crush port energy absorbing crash pad structure of claims 1-3 wherein the energy absorbing cushioning material is foamed aluminum or rubber.
5. The crush-port energy-absorbing crash pad structure according to claims 1-4, wherein the crash pad body (1) includes a plurality of frame structures provided on a guide (11) in a vehicle traveling direction, and a compression energy-absorbing member (12) is provided between the frame structures, and the compression energy-absorbing member is crushed and deformed rearward along the guide during a vehicle collision to absorb collision energy.
6. The crash pad structure according to claim 5, wherein the front end of the crush block (41) is fixedly disposed at the bottom of the front frame structure of the crash pad body (1) and slides inside the rail guide (11) upon vehicle impact;
the rear end of the extrusion block (41) is provided with a pushing and stopping component, the size of the end face of the pushing and stopping component is close to the size of the inner periphery of the guide device (11), and the pushing and stopping component uniformly extrudes the front end face of the energy-absorbing buffering material (3) in the guide device (11) along with the backward movement of the front end frame structure of the crash pad main body (1).
7. The crash pad structure according to claim 5, wherein the front and rear ends of the extrusion port (42) are provided with through openings, the inner wall of the extrusion port (42) is provided with shear ribs (43) penetrating into the energy-absorbing cushion material (3), and the shear ribs (43) shear the energy-absorbing cushion material (3) during the backward pressing of the push block.
8. The crush-opening energy-absorbing crash pad structure of claim 5 wherein the compression energy absorber component is a box having an inwardly concave curved energy-absorbing surface or is configured to be formed by splicing together:
the shearing seat barrel (121) is fixed on one side of the frame structure and is provided with an opening facing the adjacent frame structure, and a shearing notch (122) parallel to the guide device (11) is formed in the edge of the opening of the shearing seat barrel; and the end part of the extrusion cylinder (123) is contracted and embedded into the opening of the sheared seat cylinder (121), the sheared seat cylinder (121) is pushed and extruded in the vehicle impact process, and the sheared gap (122) consumes collision energy.
9. The crush-opening energy-absorbing crash pad structure according to claim 8, wherein an inward-concave folded edge (124) is further arranged on the periphery of the extrusion cylinder (123), and after the extrusion cylinder (123) is completely pushed into the shear seat cylinder (121) to completely spread the shear-receiving opening (122), the extrusion cylinder further contracts inwards along the inward-concave folded edge (124) to deform and absorb the collision energy.
10. A crush-port energy absorption method for a crash pad structure according to any one of claims 1-9, comprising the steps of: in the vehicle collision process, the compression energy absorption components (12) between the frame structures of the crash pad main body (1) are extruded and deformed to absorb collision energy; and then, the main body (1) of the anti-collision cushion slides backwards to drive the rear end inclined strut (2) at the rear end of the main body to turn over, synchronously extrude the energy-absorbing buffer material (3) connected with the rear end inclined strut, and absorb the impact energy again.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211285812.6A CN115467272A (en) | 2022-10-20 | 2022-10-20 | Energy absorption method for extrusion port and anti-collision pad structure |
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| CN202211285812.6A CN115467272A (en) | 2022-10-20 | 2022-10-20 | Energy absorption method for extrusion port and anti-collision pad structure |
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