CN114394154A - Collision energy absorption device with tension stretching mechanism - Google Patents
Collision energy absorption device with tension stretching mechanism Download PDFInfo
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- CN114394154A CN114394154A CN202210216440.5A CN202210216440A CN114394154A CN 114394154 A CN114394154 A CN 114394154A CN 202210216440 A CN202210216440 A CN 202210216440A CN 114394154 A CN114394154 A CN 114394154A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Abstract
The invention discloses a collision energy-absorbing device with a tension stretching mechanism, which comprises a buffering energy-absorbing unit, basic stress units and a supporting unit, wherein the basic stress units and the supporting unit are mirror images of each other; the basic stress unit and the supporting unit are tension steering stretching mechanisms, the basic stress unit at least comprises a stress plate and an upper pressure plate, the supporting unit at least comprises a supporting plate and a lower pressure plate, and the buffering energy-absorbing unit at least comprises a central energy-absorbing structure arranged between the upper pressure plate and the lower pressure plate; when the collision energy-absorbing device with a tension stretching mechanism is stressed, a stress plate in a basic stress unit and a support plate in a support unit bear pressure respectively, the stress plate and the support plate are converted and stretched to act on an upper pressure plate and a lower pressure plate respectively, and a central energy-absorbing structure between the upper pressure plate and the lower pressure plate deforms to absorb energy. The device has the advantages of simple and compact integral structure, convenient installation, light weight, strong interchangeability of parts and good buffering and energy absorbing effects.
Description
Technical Field
The invention relates to the technical field of vehicle design, in particular to a collision energy absorption device with a tension stretching mechanism.
Background
With the rapid development of manufacturing industry, automobiles have been owned by most homes as a basic vehicle. Meanwhile, due to the increase of vehicles and the influence of some factors which cannot be interfered with, the incidence rate of traffic accidents is continuously rising, so people pay more and more attention to the safety performance of the vehicles. The occurrence of an automobile collision is inevitable, but the design can be considered from the aspect of enhancing the collision protection function of the automobile, so that the safety of the personnel in the automobile is improved when the collision occurs.
The automobile needs to have certain rigidity as a vehicle, but the flexibility is considered when designing collision protection equipment of the automobile, and the reasonable design of a collision energy-absorbing structure is very important. The safety performance and the economical efficiency are both considered. The porous material is very suitable for being used as an energy-absorbing material in collision because of relatively high impact toughness and low price.
Chinese patent with patent publication No. CN110386192B and named as vehicle and front-end collision energy-absorbing structure thereof discloses a vehicle and front-end collision energy-absorbing structure thereof, including: the energy-absorbing structure comprises an anti-collision beam, a front supporting plate, a first energy-absorbing piece, a second energy-absorbing piece and a connecting piece; the collision energy absorption structure takes the main body as a support, and energy absorption pieces are arranged in front of and behind the anti-collision beam, so that two-stage buffering can be realized, and the absorption of collision energy is improved; the left end and the right end of the anti-collision beam are additionally provided with the front supporting plates, the action area of collision force can be enlarged, however, the enlarged action area is limited, the energy absorption piece can absorb and disperse the collision force in a limited way, and the absorption and the dispersion of transverse collision energy are more limited.
Disclosure of Invention
The invention aims to provide a collision energy absorption device with a tension stretching mechanism aiming at the defects of the prior art, and the collision energy absorption device is simple and compact in overall structure, convenient to install, light in weight, strong in interchangeability of parts and components and good in buffering energy absorption effect.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a collision energy absorption device with a tension stretching mechanism comprises a basic stress unit, a supporting unit and a buffering energy absorption unit, and is characterized in that: the basic stress unit and the supporting unit are mirror images of each other;
the basic stress unit and the supporting unit are tension steering stretching mechanisms which can convert pressure into tensile force and have stretching mechanisms, the basic stress unit at least comprises a stress plate and an upper pressure plate, the supporting unit at least comprises a supporting plate and a lower pressure plate, and the buffering energy-absorbing unit at least comprises a central energy-absorbing structure arranged between the upper pressure plate and the lower pressure plate;
when the collision energy-absorbing device with a tension stretching mechanism is stressed, a stress plate in a basic stress unit and a support plate in a support unit bear pressure respectively, the stress plate and the support plate are converted and stretched to act on an upper pressure plate and a lower pressure plate respectively, and a central energy-absorbing structure between the upper pressure plate and the lower pressure plate deforms to absorb energy.
As an improvement to the above technical solution, the basic stress unit further includes an upper connecting plate and a right middle plate, the upper connecting plate is connected below the right end of the stress plate to transmit the stress of the stress plate downward, the right middle plate is connected to the left side of the bottom end of the upper connecting plate to receive the pressure transmitted downward by the upper connecting plate, and a right telescopic member is arranged between the upper left end of the right middle plate and the lower right end of the upper pressure plate to change the pressure into a tensile force and transmit the tensile force to the upper pressure plate after being stretched by the right telescopic member;
the supporting unit also comprises a lower connecting plate and a left middle plate, the lower connecting plate is connected above the left end of the supporting plate to transmit the stress of the supporting plate upwards, the left middle plate is connected on the right side of the top end of the lower connecting plate to receive the pressure transmitted upwards by the lower connecting plate, and a left telescopic component is arranged between the lower part of the right side of the left middle plate and the upper part of the left side of the lower pressing plate to convert the pressure into tensile force, and the tensile force is transmitted to the lower pressing plate after being stretched by the left telescopic component;
the stress plate, the upper connecting plate and the right middle plate are of an integrated structure, and the support plate, the lower connecting plate and the left middle plate are of an integrated structure.
The basic stress unit can convert pressure into tension, the core of the structure is that an inflection point (a right middle plate) of a bending point of stress (stress of a stress plate) and tension (tension generated by stretching of a right telescopic part) is positioned below a tension action point (the top end of the right telescopic part is an upper pressure plate) and a stress (stress plate) action point, and the tension action point (the upper pressure plate) is higher than the position of the inflection point (the right middle plate) but is positioned below the stress action point (the stress plate); the stress (pressure) and acting force are highest; and the opposite is true for the support unit that is the mirror image thereof.
As an improvement to the above technical solution, the right telescopic member is a right hydraulic cylinder, and the left telescopic member is a left hydraulic cylinder; the central energy absorbing structure comprises at least a porous energy absorbing material.
In the device, the right telescopic part and the left telescopic part can also be mechanical components with telescopic functions, such as a cylinder, a spring, an elastic pull rod and the like, and are specifically selected according to the requirement of rigidity during design.
As an improvement to the above technical scheme, the right side of the upper pressure plate is provided with an upper hole, the left side of the upper pressure plate is provided with an upper round hole, and the middle of the bottom surface of the upper pressure plate is provided with an upper groove; the right side of the lower pressing plate is provided with a lower round hole, the left side of the lower pressing plate is provided with a lower hole, the middle of the top surface of the lower pressing plate is provided with a lower groove, and the upper hole corresponds to the lower round hole, the upper round hole corresponds to the lower hole, and the upper groove corresponds to the lower groove; the left side of the right middle plate is provided with a left hinge hole, and the right side of the left middle plate is provided with a right hinge hole; the porous energy-absorbing material is embedded between the upper groove of the upper pressure plate and the lower groove of the lower pressure plate.
As an improvement to the above technical solution, the buffering energy-absorbing unit further includes a horizontal buffering structure disposed between the upper plate upper hole and the lower plate lower hole, and between the upper plate upper hole and the lower plate lower hole, a left upper spring and a right lower spring respectively disposed between the stress plate and the left side connecting plate, and between the support plate and the right side connecting plate, an upper middle spring set disposed between the stress plate and the upper plate, and a lower middle spring set disposed between the support plate and the lower plate.
As an improvement on the technical scheme, an upper spring clamping plate and a lower spring clamping plate are respectively arranged on the upper side and the lower side of the porous energy-absorbing material.
As an improvement to the above technical solution, the spring clamping plate includes a clamping plate located at both sides of the porous energy-absorbing material and a spring located at an outer side of the clamping plate, the spring located at an upper side is located between the clamping plate and a side surface of the groove of the upper groove so that the clamping plate clamps the porous energy-absorbing material, and the spring located at a lower side is located between the clamping plate and a side surface of the groove of the lower groove so that the clamping plate clamps the porous energy-absorbing material.
As an improvement to the above technical solution, the lateral buffer structure comprises limit rods penetrating through upper and lower circular holes, upper and lower circular holes corresponding to the upper and lower press plates, and two slide blocks sleeved on each limit rod and capable of sliding up and down; springs sleeved on the limiting rods are arranged between the sliding blocks and the upper pressing plate and between the sliding blocks and the lower pressing plate, and movable rods are hinged between the sliding blocks and the left middle plate and between the sliding blocks and the right middle plate.
As an improvement on the technical scheme, the upper end and the lower end of the limiting rod are in threaded connection with nuts, the upper end nut is in spinning connection with the top surface of the upper pressing plate, and the lower end nut is in spinning connection with the bottom surface of the lower pressing plate.
Compared with the prior art, the invention has the following beneficial effects:
the material, the basic stress unit, the supporting unit, the buffering energy-absorbing unit and the transverse buffering structure have strong buffering and energy-absorbing functions. The porous energy-absorbing material has strong impact toughness, can absorb great energy when collision occurs, and can greatly reduce the mass of the device by using the porous energy-absorbing material as a main energy-absorbing piece. The transverse buffer structure, the upper left spring, the lower right spring, the upper spring group, the lower middle spring group, the left hydraulic cylinder and the right hydraulic cylinder are used as buffer parts and can also absorb energy, and the transverse buffer structure plays a main role in buffering and absorbing energy when collision with smaller energy occurs.
Secondly, the arrangement of the integral structure can consume the impact energy to a greater extent. When the vertical impact is applied, the right lower spring, the left upper spring and the middle and upper spring set are firstly compressed to absorb energy, then the right hydraulic cylinder is stretched, after the energy absorption reaches a certain limit, the springs and the middle and lower spring sets in the transverse buffer mechanism are sequentially compressed, and then the left hydraulic cylinder is stretched. When the energy is transmitted continuously, the hydraulic cylinder reaches the maximum energy bearing capacity firstly, at the moment, each spring is not compressed completely, and the porous energy-absorbing material becomes a main energy-absorbing part and can absorb a large amount of energy. When the porous energy-absorbing material also reaches the maximum load and is damaged, each spring is compressed again and can play a role in protecting other components.
Thirdly, according to the repeatability of the device of the invention, the effect of changing the overall size can be achieved. The lengths of the stress plate and the support plate can be reasonably designed in the length direction to change the overall length; in the width direction, the length of the upper and lower connecting plates and the size of the upper left spring and the lower right spring can be reasonably designed to change the width; the length, the width and the height of the whole body can be reasonably and flexibly designed according to the size of the used space; the overall device can also be considered as a infinitesimal, taking a plurality of permutations and stacked placements in actual use.
The invention has simple and compact structure, convenient installation and light weight, and because the formed collision energy absorption device is formed by combining a plurality of small parts, when any one or more of the whole structures are damaged, the collision energy absorption device can be independently replaced, thereby improving the interchangeability and the maintenance efficiency of the device and reducing the cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a basic force-bearing unit;
FIG. 2 is a schematic structural view of the support unit;
FIG. 3 is a schematic structural view of a buffer energy absorption unit;
FIG. 4 is a schematic view of the overall structure of the impact energy absorption device;
FIG. 5 is a schematic structural view of the upper platen;
fig. 6 is a schematic structural view of the lower platen.
In the figure: 1. a basic force-receiving unit; 11. a stress plate; 12. an upper connecting plate; 13. a right middle plate; 131. a left hinge hole; 14. a right hydraulic cylinder; 15. an upper pressure plate; 151. an upper circular hole; 152. an upper hole; 153. an upper groove; 154. a spring clamping plate is arranged; 2. a support unit; 21. a support plate; 22. a lower connecting plate; 23. a left intermediate plate; 231. a right hinge hole; 24. a left hydraulic cylinder; 25. a lower pressing plate; 251. a lower circular hole; 252. a lower hole; 253. a lower groove; 254. a lower spring clamp plate; 3. the buffer energy absorption unit; 31. a porous energy absorbing material; 32. a lateral buffer structure; 321. a movable rod; 322. a slider; 323. a limiting rod; 324. a spring; 325. a nut; 33. a left upper spring; 34. an upper and middle spring set; 35. a middle lower spring group; 36. a lower right spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inside", "outside", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships that the products of the present invention are conventionally placed in use, or the orientations or positional relationships that are conventionally understood by those skilled in the art, and are used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is also to be noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" are to be interpreted broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1-6, the collision energy-absorbing device with tension stretching mechanism of the present invention mainly comprises a basic stress unit 1, a supporting unit 2 and a buffering energy-absorbing unit 3;
the basic stress unit 1 is composed of a stress plate 11, an upper connecting plate 12, a right middle plate 13, a right hydraulic cylinder 14 and an upper pressure plate 15, as shown in fig. 1, the right end of the stress plate 11 is connected with the upper connecting plate 12, the lower end of the upper connecting plate 12 is connected with the right middle plate 13, the left upper end of the right middle plate 13 is connected with the right hydraulic cylinder 14, and the right hydraulic cylinder 14 is connected with the right side of the upper pressure plate 15 to form the basic stress unit 1;
the supporting unit 2 is composed of a supporting plate 21, a lower connecting plate 22, a left middle plate 23, a left hydraulic cylinder 24 and a lower pressing plate 25, as shown in fig. 2, the left side of the supporting plate 21 is connected with the lower connecting plate 22, the upper end of the lower connecting plate 22 is connected with the left middle plate 23, the right lower end of the left middle plate 23 is connected with the left hydraulic cylinder 24, and the left hydraulic cylinder 24 is connected with the left side of the lower pressing plate 25 to form the supporting unit 2;
the energy-absorbing buffer unit 3 comprises a porous energy-absorbing material 31, a transverse buffer structure 32, a left upper spring 33, an upper middle spring group 34, a middle lower spring group 35 and a right lower spring 36, as shown in fig. 3, and the energy-absorbing buffer structures organically connect the stress structure 1 and the support unit 2 to form a collision buffer device as shown in fig. 4.
The left side of the right middle plate 13 in the basic force receiving unit 1 is provided with a left hinge hole 131, the left side of the upper pressure plate 15 is provided with an upper round hole 151, and the right side of the upper pressure plate is provided with an upper hole 152, as shown in fig. 1; the right hinge hole 231 is opened at the right side of the left middle plate 23 in the supporting unit 2, the lower circular hole 251 is opened at the right side of the lower pressing plate 25, and the lower hole 252 is opened at the left side thereof, as shown in fig. 2. The above-described structures serve as attachment points or points of attachment for the lateral cushioning structures 32.
An upper groove 153 is formed on the lower side of the upper pressure plate 15 in the basic force receiving unit 1, and upper spring clamping plates 154 are installed on the left and right sides of the upper groove 153, as shown in fig. 5; the lower pressing plate 25 of the supporting unit 2 is opened at an upper side thereof with a lower groove 253, and lower spring clamps 254 are installed at both left and right sides of the lower groove 253, as shown in fig. 6.
The inner sides of the two middle plates are hinged with movable rods 321 through hinge holes, the other ends of the movable rods 321 are connected to sliding blocks 322, the sliding blocks 322 are arranged on the limiting rods 323, the limiting rods 323 penetrate through the two pressing plates, springs 324 penetrate through the limiting rods 323 and are arranged between the sliding blocks and the pressing plates, nuts 325 are assembled at the two ends of the limiting rods 323 and are connected with the outer sides of the two pressing plates, and the whole transverse buffer mechanism 32 is formed as shown in fig. 4.
The two ends of the limiting rod 323 in the transverse buffer mechanism 32 respectively penetrate through a round hole and a hole on the pressure plate, as shown in fig. 4.
The porous energy-absorbing material 31 is arranged between the two grooves of the upper and lower pressing plates, the upper and lower pressing plates are in contact with each other, and the left and right ends are fastened by spring clamping plates at two sides, as shown in fig. 4.
The specific working process of the collision energy absorption device is as follows: taking fig. 4 as an example, the support plate 21 is connected to a vehicle frame, and the left and right connecting plates may be two ends of the vehicle in the transverse direction. The right end of a stress plate in the basic stress unit 1 is connected with an upper connecting plate, the lower end of the upper connecting plate is connected with a right middle plate, the left upper end of the right middle plate is connected with a hydraulic cylinder, and the hydraulic cylinder is connected with the right side of an upper pressure plate; in the supporting unit 2, the left side of the supporting plate is connected with a lower connecting plate, the upper end of the lower connecting plate is connected with a left middle plate, the right end of the left middle plate is connected with a hydraulic cylinder, and the hydraulic cylinder is connected with the left side of a lower pressing plate; when the energy absorption unit is not considered, the basic force-bearing unit 1 and the supporting unit 2 are two structures with tension stretching mechanisms, and the pressure applied to the force-bearing plate 11 and the lower pressing plate 25 is transmitted to the hydraulic cylinder, so that the hydraulic cylinder is subjected to tension. And the buffering energy-absorbing unit 3 is added, so that the three units form an organic whole with a plurality of stages of buffering energy-absorbing units.
When the vehicle is longitudinally impacted, the stress plate 11 is stressed to compress the left upper spring 33 and the middle upper spring group 34, the stress plate 11 drives the upper connecting plate 12 and the right middle plate 13 to move downwards and stretch the right hydraulic cylinder 14, meanwhile, the movable rod 321 in the transverse buffer mechanism 32 compresses the spring 324, and when the stress is gradually increased, the upper pressing plate 15, the lower pressing plate 25 and the porous energy-absorbing material are driven to move downwards and stretch the left hydraulic cylinder 24; after the springs and the hydraulic cylinders absorb energy to a certain degree, the force applied to the upper connecting plate 12, the right middle plate 13, the right hydraulic cylinder 14 and the upper pressure plate 15 along the stress plate 11 finally acts on the porous energy-absorbing material 31. When a lateral force is applied, the left side and the right side are the same, firstly, the whole bearing unit 2 is stressed and moves rightwards, and the two are fixed because the upper ends of the limiting rod 323 and the porous energy-absorbing material 31 are connected to the basic stress module 1. The lower end of the limiting rod 323 is connected with the lower pressing plate 25 through the lower hole 252 with a larger hole position, so that the limiting rod 323 and the lower pressing plate can generate relative displacement. When subjected to a lateral force, the support unit 2 moves rightward as a whole, thereby compressing the lower spring clamp 254 and the spring 324; when the two springs absorb energy to a certain limit, the supporting unit 2 continues to move rightwards relative to the basic stress unit 1, the porous energy-absorbing material 31 is sheared and damaged, and finally the energy-absorbing effect is achieved.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
Claims (9)
1. A collision energy absorption device with a tension stretching mechanism comprises a basic stress unit, a supporting unit and a buffering energy absorption unit, and is characterized in that: the basic stress unit and the supporting unit are mirror images of each other;
the basic stress unit and the supporting unit are tension steering stretching mechanisms which can convert pressure into tensile force and have stretching mechanisms, the basic stress unit at least comprises a stress plate and an upper pressure plate, the supporting unit at least comprises a supporting plate and a lower pressure plate, and the buffering energy-absorbing unit at least comprises a central energy-absorbing structure arranged between the upper pressure plate and the lower pressure plate;
when the collision energy-absorbing device with a tension stretching mechanism is stressed, a stress plate in a basic stress unit and a support plate in a support unit respectively bear pressure, and are changed into tensile force after being stretched and converted to respectively act on an upper pressure plate and a lower pressure plate, so that the central energy-absorbing structure between the upper pressure plate and the lower pressure plate deforms and absorbs energy.
2. The impact energy absorbing device with a tension stretching mechanism according to claim 1, wherein:
the basic stress unit further comprises an upper connecting plate and a right middle plate, the upper connecting plate is connected below the right end of the stress plate to transmit the stress of the stress plate downwards, the right middle plate is connected to the left side of the bottom end of the upper connecting plate to receive the pressure transmitted downwards by the upper connecting plate, and a right telescopic part is arranged between the upper part of the left end of the right middle plate and the lower part of the right end of the upper pressure plate to change the pressure into a tensile force and transmit the tensile force to the upper pressure plate after being stretched by the right telescopic part;
the supporting unit also comprises a lower connecting plate and a left middle plate, the lower connecting plate is connected above the left end of the supporting plate to transmit the stress of the supporting plate upwards, the left middle plate is connected on the right side of the top end of the lower connecting plate to receive the pressure transmitted upwards by the lower connecting plate, and a left telescopic component is arranged between the lower part of the right side of the left middle plate and the upper part of the left side of the lower pressing plate to convert the pressure into tensile force, and the tensile force is transmitted to the lower pressing plate after being stretched by the left telescopic component;
the central energy absorbing structure comprises at least a porous energy absorbing material;
the stress plate, the upper connecting plate and the right middle plate are of an integrated structure, and the support plate, the lower connecting plate and the left middle plate are of an integrated structure.
3. The impact energy absorbing device with a tensile stretching mechanism according to claim 2, wherein: the right side telescopic part is a right side hydraulic cylinder, and the left side telescopic part is a left side hydraulic cylinder.
4. The impact energy absorbing device with a tensile stretching mechanism according to claim 2, wherein: an upper hole is formed in the right side of the upper pressing plate, an upper round hole is formed in the left side of the upper pressing plate, and an upper groove is formed in the middle of the bottom surface of the upper pressing plate; the right side of the lower pressing plate is provided with a lower round hole, the left side of the lower pressing plate is provided with a lower hole, the middle of the top surface of the lower pressing plate is provided with a lower groove, and the upper hole corresponds to the lower round hole, the upper round hole corresponds to the lower hole, and the upper groove corresponds to the lower groove; the left side of the right middle plate is provided with a left hinge hole, and the right side of the left middle plate is provided with a right hinge hole; the porous energy-absorbing material is embedded between the upper groove of the upper pressure plate and the lower groove of the lower pressure plate.
5. The impact energy absorbing device with a tension stretching mechanism according to claim 4, wherein: the buffering energy-absorbing unit further comprises a transverse buffering structure arranged between the upper pressing plate upper hole and the lower pressing plate lower round hole, and between the upper pressing plate upper round hole and the lower pressing plate lower round hole, a left upper spring and a right lower spring which are respectively arranged between the stress plate and the left connecting plate, between the supporting plate and the right connecting plate, an upper middle spring group arranged between the stress plate and the upper pressing plate, and a lower middle spring group arranged between the supporting plate and the lower pressing plate.
6. The impact energy absorbing device with a tension stretching mechanism according to claim 5, wherein: and an upper spring clamping plate and a lower spring clamping plate are respectively arranged on the upper side and the lower side of the porous energy-absorbing material.
7. The impact energy absorbing device with a tension stretching mechanism according to claim 6, wherein: the spring clamping plate comprises a clamping plate located on two sides of the porous energy-absorbing material and a spring located on the outer side of the clamping plate, the spring on the upper side is located between the clamping plate and the side face of the groove of the upper groove, so that the clamping plate clamps the porous energy-absorbing material, and the spring on the lower side is located between the clamping plate and the side face of the groove of the lower groove, so that the clamping plate clamps the porous energy-absorbing material.
8. The impact energy absorbing device with a tension stretching mechanism according to claim 4, wherein: the transverse buffer structure comprises limiting rods which penetrate through an upper hole and a lower round hole corresponding to the upper pressing plate and the lower pressing plate, the upper round hole and the lower hole, and two sliding blocks which are sleeved on each limiting rod and can slide up and down; springs sleeved on the limiting rods are arranged between the sliding blocks and the upper pressing plate and between the sliding blocks and the lower pressing plate, and movable rods are hinged between the sliding blocks and the left middle plate and between the sliding blocks and the right middle plate.
9. The impact energy absorbing device with a tensile stretching mechanism according to claim 8, wherein: the upper end and the lower end of the limiting rod are in threaded connection with nuts, the upper end nut is in spinning on the top surface of the upper pressing plate, and the lower end nut is in spinning on the bottom surface of the lower pressing plate.
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| CN202210216440.5A CN114394154B (en) | 2022-03-07 | 2022-03-07 | Collision energy absorption device with tension stretching mechanism |
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| JP2010116132A (en) * | 2008-11-14 | 2010-05-27 | Ind Technol Res Inst | Vehicular colliding shock absorber |
| CN104354662A (en) * | 2014-10-27 | 2015-02-18 | 重庆市永宏陈记实业有限公司 | Pre-extended multistage shock absorption type car bumper device |
| CN104442648A (en) * | 2014-12-02 | 2015-03-25 | 广西大学 | Energy-absorbing bumper |
| CN211592479U (en) * | 2019-11-12 | 2020-09-29 | 北京众达特汽车零部件有限公司 | Energy absorption device for automobile bumper |
| CN110816453A (en) * | 2019-11-26 | 2020-02-21 | 荆门禾硕精密机械有限公司 | Energy-absorbable automobile and energy absorption mode during collision |
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