Anti-collision beam and vehicle
By designing a negatively related elastic vibration damping component combination in the anti-collision beam, the problems of complex structure and high cost of the existing anti-collision beam are solved, and the multi-stage vibration damping and collision prevention effect and safety improvement are achieved.
Patent Information
- Application Number
- CN202420377760.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-28
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-02-28
AI Technical Summary
The existing anti-collision beam has complex structure, high cost and poor anti-collision effect, resulting in greater damage to rigid collisions.
An anti-collision beam was designed, including multiple groups of elastic vibration-absorbing groups between the mounting seat and the facing seat. The length and elastic coefficient of the elastic vibration-absorbing element are negatively correlated, forming a multi-stage vibration-absorbing effect, and through elastic vibration-absorbing The dispersed arrangement of the parts and the combination of different elastic coefficients can adapt to the collision degree at different collision stages and reduce rigid collision damage.
It achieves a high vibration-absorbing and collision-proof effect, reduces collision damage, improves usage safety, simplifies the structure, and reduces processing costs and complexity.
Smart Images
Figure CN222157385U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of anti-collision, in particular to an anti-collision beam and a vehicle. Background Art
[0002] There are many types of anti-collision beams at present, and most of them have complex structures. Aluminum alloy anti-collision beams are currently the mainstream form. Most of them are some kind of closed cavity structure, or use springs, rubber and other materials to assist in absorbing kinetic energy. They have complex structures, high costs, poor anti-collision effects, and cause greater rigid collision damage. Utility Model Content
[0003] The utility model aims to provide an anti-collision beam and a vehicle, so as to solve the technical problems that the existing anti-collision beam has a complex structure, high cost, poor anti-collision effect and causes great rigid collision damage.
[0004] In order to solve the above problems, the utility model provides an anti-collision beam, including a mounting seat, a counter seat and a plurality of elastic vibration reduction groups, wherein the mounting seat and the counter seat are arranged at intervals and the walls facing each other are respectively a first connecting wall and a second connecting wall;
[0005] Each of the elastic vibration damping groups includes a plurality of identical and dispersedly arranged elastic vibration damping members, the lengths of the elastic vibration damping members in the plurality of elastic vibration damping groups are different and their elastic coefficients are negatively correlated with their lengths; the elastic vibration damping member in the elastic vibration damping group with the largest length is a primary vibration damping group, and the rest are secondary vibration damping groups, the first end of the elastic vibration damping member in the primary vibration damping group is fixedly connected to the first connecting wall, and the second end is fixedly connected to the second connecting wall, and the first end of the elastic vibration damping member in the secondary vibration damping group is fixedly connected to the first connecting wall or the second connecting wall, and the second end is suspended.
[0006] Optionally, the number of the elastic vibration damping groups is greater than or equal to three, and the elastic vibration damping groups in each group are arranged from small to large in length. Among any three adjacent groups of the elastic vibration damping groups, the one with the smallest length is the short vibration damping group, the one with the middle length is the medium vibration damping group, and the one with the longest length is the long vibration damping group. The number of elastic vibration damping parts in the short vibration damping group is not less than the number of elastic vibration damping parts in the medium vibration damping group, and the number of elastic vibration damping parts in the medium vibration damping group is not less than the number of elastic vibration damping parts in the long vibration damping group. The difference between the elastic coefficient of the elastic vibration damping parts in the medium vibration damping group and the elastic coefficient of the elastic vibration damping parts in the long vibration damping group is A, and the difference between the elastic coefficient of the elastic vibration damping parts in the short vibration damping group and the elastic coefficient of the elastic vibration damping parts in the medium vibration damping group is B, and A>B.
[0007] Optionally, the number of the elastic vibration damping groups is equal to three, and the elastic coefficients of the elastic vibration damping members in the three elastic vibration damping groups are respectively in the range of 1.8 to 2×105 N / m, 3 to 4×105 N / m and 4 to 5×105 N / m.
[0008] Optionally, the first connecting wall is located on the mounting seat, and the first ends of the elastic vibration damping members in each of the secondary vibration damping groups are fixedly connected to the first connecting wall.
[0009] Optionally, the number of elastic vibration damping components in each of the secondary vibration damping groups is greater than the number of elastic vibration damping components in the primary vibration damping group.
[0010] Optionally, the elastic vibration damping members of each of the elastic vibration damping groups are arranged in multiple columns along the width direction of the first connecting wall to form multiple columns of elastic vibration damping columns, wherein every two columns of elastic vibration damping columns in each of the secondary vibration damping groups correspond to one column of elastic vibration damping columns of the primary vibration damping group and together constitute a vibration damping unit, and in the same vibration damping unit, the two columns of elastic vibration damping columns of the same secondary vibration damping group are symmetrically arranged on both sides of the single column of elastic vibration damping columns of the primary vibration damping group.
[0011] Optionally, in the same vibration damping unit, from a single row of elastic vibration damping rows of the primary vibration damping group toward one side thereof, the lengths of the elastic vibration damping members in each of the elastic vibration damping rows decrease in sequence.
[0012] Optionally, the elastic vibration damping member comprises a spring.
[0013] Optionally, the mounting seat is made of aluminum alloy and is integrally formed by hot extrusion; and / or, the impact seat is made of aluminum alloy and is integrally formed by hot extrusion.
[0014] The utility model also provides a vehicle, a vehicle body and the above-mentioned anti-collision beam, wherein the mounting seat of the anti-collision beam is detachably fixed to the front side of the vehicle body.
[0015] In the anti-collision beam provided by the utility model, by setting the connection form, length and elastic coefficient of the elastic vibration damping parts in the multiple groups of elastic vibration damping groups, on the one hand, the multiple groups of elastic vibration damping groups can adapt to the collision degree of the collision object at different collision stages to form multi-level vibration damping and collision prevention, so that while playing a higher vibration damping and collision prevention effect on the collision, it can also reduce to a certain extent the rigid collision damage formed between the anti-collision beam and the collision object at the corresponding collision stage, thereby ensuring the anti-collision effect of the anti-collision beam on the vehicle, reducing collision damage and improving safety in use; on the other hand, during the collision process, there are only multiple elastic vibration damping parts between the impact seat and the mounting seat. When the collision direction of the collision object and the impact seat When not facing the impact seat, the elastic vibration dampers in different areas can adapt to the bending deformation according to the extrusion effect of the corresponding areas of the impact seat, thereby realizing anti-collision and vibration reduction in multiple directions, and correspondingly improving its anti-collision range and effect; on the other hand, a primary vibration damper with the longest length is set to be connected between the mounting seat and the impact seat. The primary vibration damper can play the role of connection and vibration reduction at the same time, with two uses in one, simple structure and strong functionality; at the same time, the impact seat and the mounting seat are relatively independent and open between them. During processing, the two can be processed independently, and then the elastic vibration damper is connected to the mounting seat and the impact seat, which makes processing more convenient and reduces processing costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 A cross-sectional view of the anti-collision beam provided in an embodiment of the utility model when it is in the first form;
[0018] Figure 2 A cross-sectional view of the anti-collision beam provided in an embodiment of the utility model when it is in the second form.
[0019] Description of reference numerals:
[0020] 100 - mounting seat; 110 - first connecting wall; 200 - impact seat; 210 - second connecting wall; 310 - primary vibration reduction group; 320 - secondary vibration reduction group; 330 - elastic vibration reduction member. DETAILED DESCRIPTION
[0021] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0024] This embodiment provides an anti-collision beam, such as Figure 1 As shown, it includes a mounting seat 100, a counter seat 200 and multiple groups of elastic vibration damping groups, the mounting seat 100 and the counter seat 200 are arranged at intervals and the walls facing each other are respectively a first connecting wall 110 and a second connecting wall 210; each elastic vibration damping group includes a plurality of identical and dispersedly arranged elastic vibration damping members 330, the lengths of the elastic vibration damping members 330 in the multiple groups of elastic vibration damping groups are different and their elastic coefficients are negatively correlated with their lengths; the elastic vibration damping member 330 with the largest length in each elastic vibration damping group is the primary vibration damping group 310, and the rest are secondary vibration damping groups 320, the first end of the elastic vibration damping member 330 in the primary vibration damping group 310 is fixedly connected to the first connecting wall 110, and the second end is fixedly connected to the second connecting wall 210, the first end of the elastic vibration damping member 330 in the secondary vibration damping group 320 is fixedly connected to the first connecting wall 110 or the second connecting wall 210, and the second end is suspended.
[0025] This embodiment also provides a vehicle, a vehicle body and the above-mentioned anti-collision beam, and the mounting seat 100 of the anti-collision beam is detachably fixed to the front side of the vehicle body.
[0026] The anti-collision beam and vehicle provided in this embodiment, wherein the anti-collision beam comprises a mounting seat 100 for connection and installation, a plurality of elastic vibration-damping groups for multi-level vibration reduction, and a collision seat 200 for contacting and impacting a collision object, each elastic vibration-damping group comprises a plurality of elastic vibration-damping members 330 arranged in parallel and dispersedly, wherein the specifications of the plurality of elastic vibration-damping members 330 belonging to the same elastic vibration-damping group are the same, specifically, the length and elastic coefficient are equal; the length and elastic coefficient of the elastic vibration-damping members 330 of different elastic vibration-damping groups are different, specifically, the longer the length of the elastic vibration-damping member 330 in the elastic vibration-damping group, the smaller the elastic coefficient. The vehicle comprises a movable vehicle body and the above-mentioned anti-collision beam capable of achieving vibration reduction and collision prevention effects.
[0027] Define the elastic vibration damper 330 of the primary vibration damper group 310 as the primary vibration damper, the elastic vibration damper 330 of the secondary vibration damper group 320 as the secondary vibration damper, and when there are multiple secondary vibration damper groups 320, as the length of the elastic vibration damper 330 decreases, each secondary vibration damper group 320 is sequentially the first secondary vibration damper group 320, the second secondary vibration damper group 320..., and correspondingly, its elastic vibration damper 330 is sequentially the first secondary vibration damper, the second secondary vibration damper...; initially, the mounting seat 100 is detachably fixed to the front side of the vehicle body, the longest primary vibration damper connects the impact seat 200 to the mounting seat 100, and the remaining secondary vibration dampers are located between the mounting seat 100 and the impact seat 200 and the first ends are connected to the mounting seat 100 or the impact seat 200.
[0028] When in use, the anti-collision beam moves with the vehicle body. When a collision object such as a front vehicle collides with the front side of the vehicle of the present application, the collision object first contacts and collides with the impact seat 200, and the impact seat 200 correspondingly squeezes the primary shock absorber. The primary shock absorber is deformed by the squeezing and can apply a reverse elastic resistance force to the collision object through the impact seat 200 to prevent the collision object from continuing to hit the anti-collision beam, thereby absorbing and reducing the impact force of the collision object. At the same time, since the elastic coefficient of the primary shock absorber is small and the deformation performance is high, and the degree of collision between the collision object and the anti-collision beam is relatively light in the initial stage of the collision, the primary shock absorber is squeezed and can be quickly compressed and deformed. On the basis of playing a vibration reduction role in the initial impact of the collision object, it can also reduce the rigid collision degree between the impact seat 200 and the collision object in the initial stage of the collision, thereby correspondingly reducing the rigid damage to both the anti-collision beam and the collision object in the initial stage of the collision, especially for conditions such as scratches with only a relatively light collision degree.
[0029] When the collision is severe, the collision object continues to move toward the vehicle under the obstruction of the primary shock absorber. When the distance between the impact seat 200 and the mounting seat 100 is less than the length of the first secondary shock absorber, the first secondary shock absorber is clamped between the impact seat 200 and the mounting seat 100 and is compressed and deformed under the extrusion of the impact seat 200. At this time, the primary shock absorber with a small elastic coefficient but a large compression degree and the first secondary shock absorber with a large elastic coefficient but a small compression degree jointly apply a large reverse elastic obstruction force to the collision object through the impact seat 200, thereby effectively reducing vibration and preventing collisions with severe degrees, and at the same time reducing the rigid collision damage between the anti-collision beam and the collision object. Similarly, as the collision object Continue to move and collide. When the distance between the impact seat 200 and the mounting seat 100 is smaller than the length of the second secondary shock absorber, the second secondary shock absorber is clamped between the impact seat 200 and the mounting seat 100 and is compressed and deformed under the extrusion of the impact seat 200. At this time, the primary shock absorber, the first secondary shock absorber and the second secondary shock absorber jointly apply a greater reverse elastic resistance force to the collision object through the impact seat 200, thereby having a higher vibration reduction and anti-collision effect on the collision, and at the same time reducing the rigid collision damage between the anti-collision beam and the collision object to a certain extent; the third secondary shock absorber... is similar, and can apply a larger reverse elastic resistance force to the impact seat 200 and the collision object with a smaller compression deformation, thereby having a stronger vibration reduction and anti-collision effect.
[0030] After a certain degree of collision, as the collision object separates from the impact seat 200, each elastic vibration damping member 330 can push the impact seat 200 to return to its original state, and the anti-collision beam returns to its original state and can continue to be recycled.
[0031] In the anti-collision beam provided in the present embodiment, by setting the connection form, length and elastic coefficient of the elastic vibration damping members 330 in the multiple groups of elastic vibration damping groups, on the one hand, the multiple groups of elastic vibration damping groups can adapt to the collision degree of the collision object at different collision stages to form multi-level vibration damping and collision prevention, so that while having a higher vibration damping and collision prevention effect on the collision, it can also reduce to a certain extent the rigid collision damage formed between the anti-collision beam and the collision object at the corresponding collision stage, thereby ensuring the anti-collision effect of the anti-collision beam on the vehicle, reducing collision damage and improving safety in use; on the other hand, during the collision process, there are only multiple elastic vibration damping members 330 between the impact seat 200 and the mounting seat 100. When the collision direction of the collision object and the impact seat 200 is not directly facing the impact seat 200, the elastic vibration dampers 330 in different areas can adapt to the bending deformation according to the extrusion effect exerted on them by the corresponding areas of the impact seat 200, thereby realizing anti-collision and vibration reduction in multiple directions, and correspondingly improving its anti-collision range and effect; on the other hand, a primary vibration damper with the longest length is arranged to be connected between the mounting seat 100 and the impact seat 200. The primary vibration damper can simultaneously play the role of connection and vibration reduction, and has two uses in one object, a simple structure and strong functionality; at the same time, the impact seat 200 and the mounting seat 100 are relatively independent and there is an open state between the two. During processing, the two can be processed independently, and then the elastic vibration damper 330 is connected to the mounting seat 100 and the impact seat 200, which makes processing more convenient and reduces processing costs.
[0032] Specifically, the elastic vibration damper 330 includes a spring.
[0033] The mounting seat 100 and the impact seat 200 can be made of 6061 aluminum alloy, and formed by forward hot extrusion using a flat die. The extrusion process can be specifically: the casting rod temperature is 500-510°C, the extrusion ratio must be greater than 35 when the extruder is selected, the extrusion rod speed is 4-6mm / s, the outlet temperature is 530-545°C, and water mist cooling is performed.
[0034] Optionally, in this embodiment, if Figure 2As shown, the number of elastic vibration damping members 330 in each secondary vibration damping group 320 is greater than the number of elastic vibration damping members 330 in the primary vibration damping group 310, and the number of elastic vibration damping groups is greater than or equal to three. Each elastic vibration damping group is arranged from small to large in length. Among any three adjacent elastic vibration damping groups, the one with the smallest length is a short vibration damping group, the one with the middle length is a medium vibration damping group, and the one with the longest length is a long vibration damping group. The elastic vibration damping members 330 in the short vibration damping group The number of is not less than the number of elastic vibration damping members 330 in the middle vibration damping group, the number of elastic vibration damping members 330 in the middle vibration damping group is not less than the number of elastic vibration damping members 330 in the long vibration damping group, and the difference between the elastic coefficients of the elastic vibration damping members 330 in the middle vibration damping group and the elastic coefficients of the elastic vibration damping members 330 in the long vibration damping group is A, and the difference between the elastic coefficients of the elastic vibration damping members 330 in the short vibration damping group and the elastic coefficients of the elastic vibration damping members 330 in the middle vibration damping group is B, and A>B.
[0035] Taking three groups of elastic vibration damping groups as an example, the number of elastic vibration damping members 330 in the middle vibration damping group is greater than or equal to the number of elastic vibration damping members 330 in the long vibration damping group, and the number of elastic vibration damping members 330 in the short vibration damping group is greater than or equal to the number of elastic vibration damping members 330 in the middle vibration damping group. At the same time, the increase in the elastic coefficient of the elastic vibration damping members 330 in the short vibration damping group compared with the elastic coefficient of the elastic vibration damping members 330 in the middle vibration damping group is greater than the increase in the elastic coefficient of the elastic vibration damping members 330 in the middle vibration damping group compared with the elastic coefficient of the elastic vibration damping members 330 in the long vibration damping group. During the collision process, the reverse elastic resistance force applied by the same group of elastic vibration damping groups to the collision object through the impact seat 200 is approximately the product of the number of its elastic vibration damping members 330, the degree of compression stroke and the elastic coefficient. As the collision proceeds, the long vibration damping group with a smaller number and a larger number of elastic vibration damping members 330 will have a greater impact on the collision object. The elastic vibration damping parts 330 with a smaller elastic coefficient can exert a smaller reverse elastic resistance force on the collision object through the impact seat 200. On the basis of achieving the vibration reduction and anti-collision effect, it can also reduce the rigid collision damage caused by the mounting seat 100 and the collision object; as the collision object continues to collide, the elastic vibration damping parts 330 with a larger number and a larger elastic coefficient in the middle vibration damping group can exert a larger reverse elastic resistance force on the collision object through the impact seat 200, thereby adapting to a stronger degree of impact and achieving a better vibration reduction and anti-collision effect; when the collision object further collides, the degree of impact is more serious, and the elastic vibration damping parts 330 with a larger number and a larger elastic coefficient in the short vibration damping group can exert a larger reverse elastic resistance force on the collision object through the impact seat 200, thereby adapting to a more serious degree of impact and achieving a stronger vibration reduction and anti-collision effect.
[0036] Specifically, in this embodiment, when the number of elastic vibration damping groups is equal to three, the elastic coefficients of the elastic vibration damping members 330 in the three elastic vibration damping groups are respectively in the range of 1.8 to 2×105 N / m, 3 to 4×105 N / m, and 4 to 5×105 N / m. Among them, the elastic coefficient of the elastic vibration damping member 330 in the long vibration damping group is in the range of 1.8 to 2×105 N / m, the elastic coefficient of the elastic vibration damping member 330 in the medium vibration damping group is in the range of 3 to 4×105 N / m, and the elastic coefficient of the elastic vibration damping member 330 in the short vibration damping group is in the range of 4 to 5×105 N / m.
[0037] Of course, in some other embodiments, the number of elastic vibration damping groups can also be two, four, etc., and is not limited to the above three groups.
[0038] Optionally, in this embodiment, if Figure 1 and Figure 2 As shown, the first connecting wall 110 is located at the mounting seat 100, and the first ends of the elastic vibration dampers 330 in each secondary vibration damping group 320 are fixed to the first connecting wall 110. The primary vibration damper is connected between the mounting seat 100 and the impact seat 200, and the first ends of all secondary vibration dampers are fixed to the mounting seat 100, and the second ends extend toward the impact seat 200 and are suspended. When the anti-collision beam is not subjected to collision and extrusion, all secondary vibration dampers are carried by the vehicle body through the mounting seat 100, and multiple primary vibration dampers only need to carry the weight of the impact seat 200, without the need to carry the weight of each secondary vibration damper, thereby reducing the load of the primary vibration damper, and correspondingly reducing its fatigue damage to ensure its elastic vibration damping performance.
[0039] Specifically, in this embodiment, Figure 2As shown, the elastic vibration damping members 330 of each elastic vibration damping group are arranged in multiple columns along the width direction of the first connecting wall 110 to form multiple columns of elastic vibration damping columns, wherein every two columns of elastic vibration damping columns in each secondary vibration damping group 320 correspond to one column of elastic vibration damping columns of the primary vibration damping group 310 and together form a vibration damping unit, and in the same vibration damping unit, the two columns of elastic vibration damping columns of the same secondary vibration damping group 320 are symmetrically arranged on both sides of the single column of elastic vibration damping columns of the primary vibration damping group 310. The primary vibration damping members are arranged in a rectangular array, specifically, arranged in rows along the length direction of the first connecting wall 110 and in columns along the width direction of the first connecting wall 110 to form a primary vibration damping column. The secondary vibration damping members in each group of secondary vibration damping groups 320 are also arranged in columns along the width direction of the first connecting arm to form a secondary vibration damping column. When there are multiple groups of secondary vibration damping groups 320, as the length of the secondary vibration damping members decreases, the secondary vibration damping columns formed are successively the first secondary vibration damping column, the second secondary vibration damping column..., then every two first secondary vibration damping columns are symmetrically arranged on both sides of one of the primary vibration damping columns, and every two second secondary vibration damping columns are symmetrically arranged on both sides of one of the primary vibration damping columns..., thereby forming a vibration damping unit with a plurality of elastic vibration damping members 330 dispersedly arranged, and each vibration damping unit is evenly dispersedly arranged between the mounting seat 100 and the impact seat 200, thereby improving the vibration damping and anti-collision balance of each elastic vibration damping group on the impact seat 200, and correspondingly improving the anti-collision balance of the anti-collision beam.
[0040] Preferably, in the same vibration-damping unit, the lengths of the elastic vibration-damping members 330 in each elastic vibration-damping column decrease in sequence from the single elastic vibration-damping column of the primary vibration-damping group 310 to one side thereof. That is, in the same vibration-damping unit, the primary vibration-damping column is located in the middle, and the first secondary vibration-damping column, the second secondary vibration-damping column, and so on are arranged in sequence on both sides thereof.
[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. An anti-collision beam, characterized in that: It comprises a mounting seat (100), a counter seat (200) and a plurality of elastic vibration reduction groups, wherein the mounting seat (100) and the counter seat (200) are arranged at intervals and the walls facing each other are respectively a first connecting wall (110) and a second connecting wall (210); Each of the elastic vibration damping groups comprises a plurality of identical and dispersedly arranged elastic vibration damping members (330); the lengths of the elastic vibration damping members (330) in the plurality of elastic vibration damping groups are different and their elastic coefficients are negatively correlated with their lengths; the elastic vibration damping member (330) in each of the elastic vibration damping groups having the largest length is a primary vibration damping group (310), and the others are secondary vibration damping groups (320); the first end of the elastic vibration damping member (330) in the primary vibration damping group (310) is fixedly connected to the first connecting wall (110), and the second end is fixedly connected to the second connecting wall (210); the first end of the elastic vibration damping member (330) in the secondary vibration damping group (320) is fixedly connected to the first connecting wall (110) or the second connecting wall (210), and the second end is suspended.
2. The anti-collision beam according to claim 1, characterized in that: The number of the elastic vibration damping groups is greater than or equal to three, and the elastic vibration damping groups of each group are arranged in ascending order of length. Among any three adjacent groups of the elastic vibration damping groups, the one with the smallest length is a short vibration damping group, the one with the middle length is a medium vibration damping group, and the one with the longest length is a long vibration damping group. The number of elastic vibration damping members (330) in the short vibration damping group is not less than the number of elastic vibration damping members (330) in the medium vibration damping group, and the number of elastic vibration damping members (330) in the medium vibration damping group is not less than the number of elastic vibration damping members (330) in the long vibration damping group. The difference between the elastic coefficient of the elastic vibration damping members (330) in the medium vibration damping group and the elastic coefficient of the elastic vibration damping members (330) in the long vibration damping group is A, and the difference between the elastic coefficient of the elastic vibration damping members (330) in the short vibration damping group and the elastic coefficient of the elastic vibration damping members (330) in the medium vibration damping group is B, and A>B.
3. The anti-collision beam according to claim 1, characterized in that: The number of the elastic vibration damping groups is equal to three groups, and the elastic coefficients of the elastic vibration damping members (330) in the three elastic vibration damping groups are respectively in the range of 1.8 to 2×105 N / m, 3 to 4×105 N / m and 4 to 5×105 N / m.
4. The anti-collision beam according to any one of claims 1 to 3, characterized in that: The first connecting wall (110) is located on the mounting seat (100), and the first end of the elastic vibration damping member (330) in each of the secondary vibration damping groups (320) is fixedly connected to the first connecting wall (110).
5. The anti-collision beam according to claim 1, characterized in that: The number of elastic vibration damping components (330) in each of the secondary vibration damping groups (320) is greater than the number of elastic vibration damping components (330) in the primary vibration damping group (310).
6. The anti-collision beam according to any one of claims 1 to 3, characterized in that: The elastic vibration damping members (330) of each of the elastic vibration damping groups are arranged in multiple rows along the width direction of the first connecting wall (110) to form multiple rows of elastic vibration damping columns, wherein every two rows of elastic vibration damping columns in each of the secondary vibration damping groups (320) correspond to one row of elastic vibration damping columns of the primary vibration damping group (310) and together form a vibration damping unit, and in the same vibration damping unit, the two rows of elastic vibration damping columns of the same secondary vibration damping group (320) are symmetrically arranged on both sides of a single row of elastic vibration damping columns of the primary vibration damping group (310).
7. The anti-collision beam according to claim 6, characterized in that: In the same vibration-damping unit, from a single elastic vibration-damping column of the primary vibration-damping group (310) toward one side thereof, the lengths of the elastic vibration-damping members (330) in each elastic vibration-damping column decrease in sequence.
8. The anti-collision beam according to any one of claims 1 to 3, characterized in that: The elastic vibration damping member (330) comprises a spring.
9. The anti-collision beam according to claim 6, characterized in that: The mounting seat (100) is made of an aluminum alloy and is integrally formed by hot extrusion; and / or the impact seat (200) is made of an aluminum alloy and is integrally formed by hot extrusion.
10. A vehicle, characterized in that: A vehicle body and an anti-collision beam as described in any one of claims 1 to 9, wherein the mounting seat (100) of the anti-collision beam is detachably fixed to the front side of the vehicle body.