CN112092757B - Novel multistage buffering energy-absorbing anti-collision beam of collision skew - Google Patents
Novel multistage buffering energy-absorbing anti-collision beam of collision skew Download PDFInfo
- Publication number
- CN112092757B CN112092757B CN202011094817.1A CN202011094817A CN112092757B CN 112092757 B CN112092757 B CN 112092757B CN 202011094817 A CN202011094817 A CN 202011094817A CN 112092757 B CN112092757 B CN 112092757B
- Authority
- CN
- China
- Prior art keywords
- driving side
- collision
- main driving
- collision beam
- supporting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000003139 buffering effect Effects 0.000 title claims abstract description 45
- 230000008093 supporting effect Effects 0.000 claims abstract description 68
- 238000013461 design Methods 0.000 claims abstract description 16
- 238000013016 damping Methods 0.000 claims description 28
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- 230000009172 bursting Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 239000006260 foam Substances 0.000 claims 2
- 230000009471 action Effects 0.000 abstract description 21
- 230000000694 effects Effects 0.000 abstract description 11
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000001125 extrusion Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 5
- 238000004880 explosion Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
- B60R2019/1806—Structural beams therefor, e.g. shock-absorbing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Dampers (AREA)
Abstract
The invention discloses a novel collision offset multistage buffering energy-absorbing anti-collision beam, which comprises a main driving side anti-collision beam combination, a copilot side anti-collision beam combination, a connecting spring, a three-section buffering support, a fixed hinged support, a supporting plate, a supporting connecting rod, a buffering spring, a sleeve, a supporting cross beam, a reset spring and a supporting longitudinal beam, wherein the anti-collision beam combination is divided into a first anti-collision beam and a second anti-collision beam, and multiple buffering anti-seismic effects can be realized by adopting the anti-collision beam combination and the three-section buffering support and the buffering spring; when the vehicle is in offset collision, the design system can generate a force which is vertical to the collision direction and horizontally faces to the non-collision side to the vehicle body by utilizing external collision force, so that the vehicle head is displaced to the non-collision side, the front collision is slowed down to reduce the damage degree of the vehicle body, and the anti-collision beam is combined to be reset under the action of the reset spring after collision so as to prevent secondary collision. The design improves the absorption of the collision impact energy by the anti-collision beam system, and especially improves the safety level of offset collision of the vehicle.
Description
Technical Field
The invention relates to the field of mechanical design, in particular to a novel collision offset multistage buffering energy-absorbing anti-collision beam.
Background
Automobile crash safety is one of the most interesting issues for automobile occupants. When collision occurs, the front anti-collision beam can absorb and transmit energy, so that the damage degree of the passenger cabin is reduced, and the personal safety of passengers is ensured. Accordingly, bumper beam designs have been of great interest in the automotive field.
In the prior art of front-mounted anti-collision beams, an anti-collision beam body and an energy absorption box are generally combined, and only one protective measure is adopted, so that in a general collision process, the anti-collision beams of the type can absorb part of collision energy, but in offset collisions of 40% or less, the area is beyond the range protected by a front longitudinal beam due to too high collision position to one side of a head, and the frames near the front fender mainly bear the collision, so that the structural strength of most vehicles can not bear the collision with the speed exceeding 64km/h far from the conventional collision test result. In the front offset collision, the longitudinal beam of the vehicle body designed in the prior art cannot play a role in protecting due to the fact that the vehicle body invades into a passenger cabin due to the large front impact, and safety of passengers in the vehicle is threatened. Therefore, offset collisions are more demanding in restraint systems, particularly in the design of front impact beams for automobiles.
Disclosure of Invention
First, the present invention solves the problems
In order to solve the problems in the prior art and improve the personal safety coefficient of passengers in the automobile collision process, the invention provides the novel collision offset multistage buffering energy-absorbing anti-collision beam which is simple in structure and good in effect, and aims to overcome the following defects:
(1) When the automobile is impacted in the front, the existing common front anti-collision beam has lower impact damage energy absorption capacity, so that the automobile body bears most or even all impact collision energy, and the damage degree of the whole automobile is further increased;
(2) When the automobile is impacted in a side offset way, the protection range of the front anti-collision beam in the prior art is limited, more parts of the automobile body are damaged due to collision protection failure, and personal safety of passengers is easily threatened.
(II) technical scheme
The invention provides a novel collision offset multistage buffering energy-absorbing anti-collision beam, which comprises the following components: the main driving side anti-collision beam combination, the auxiliary driving side anti-collision beam combination, the connecting spring, the supporting plate, the three-section buffer support, the reset spring, the baffle, the supporting beam, the connecting plate, the fixing sleeve, the buffer spring, the supporting connecting rod and the supporting longitudinal beam, wherein the main driving side anti-collision beam combination is divided into two parts, namely a main driving side first anti-collision beam and a main driving side second anti-collision beam, the auxiliary driving side anti-collision beam combination is divided into two parts, namely an auxiliary driving side first anti-collision beam and an auxiliary driving side second anti-collision beam, the main driving side first anti-collision Liang Kajie is arranged at the front end of the main driving side second anti-collision beam, the auxiliary driving side first anti-collision Liang Kajie is arranged at the front end of the auxiliary driving side second anti-collision beam, the main driving side anti-collision beam combination and the auxiliary driving side anti-collision beam combination are fixedly connected through the connecting spring at the right middle part, the three-section type buffer support is arranged between the second anti-collision beam and the supporting beam, and is divided into two groups, namely, two groups, one group is perpendicular to the supporting beam, the other group is obliquely arranged at an included angle of 45 degrees with the outer side of the supporting beam, the three-section type buffer support is connected with the second anti-collision beam and the three-section type buffer support is connected with the supporting beam through fixed hinge supports, the bottom ends of the fixed sleeves are welded on the supporting beam, the buffer springs are arranged in the fixed sleeves, the bottom ends of the buffer springs are contacted with the supporting beam, the bottom ends of the supporting connecting rods are clamped in the fixed sleeves and are contacted with the top ends of the buffer springs, the bottom ends of the supporting plates are hinged with the supporting connecting rods, the top ends of the supporting plates are attached to the second anti-collision beam, the supporting longitudinal beams are divided into two groups, and the top all with the vertical welding of supporting beam, the connecting plate welds the supporting beam bottom, the connecting plate accessible fixing bolt is fixed on the automobile body longeron, baffle inner vertical welding in on the supporting beam, reset spring is located the baffle with between the crashproof roof beam combination, and both ends are connected respectively through the fixed hinge support the baffle outer end with the second crashproof roof beam lower extreme of crashproof roof beam combination.
Further, the first anti-collision beam inner side of the main driving side anti-collision beam combination and the auxiliary driving side anti-collision beam combination is provided with a plurality of damping spring groups and sliding grooves, the damping spring groups are three parts, namely a front sliding baffle, damping springs and a rear sliding baffle, the front sliding baffle and the rear sliding baffle are clamped in the sliding grooves, three damping springs are arranged in the middle of the front sliding baffle and the rear sliding baffle from top to bottom at equal intervals, and the front ends and the rear ends of the damping springs are welded on the front sliding baffle and the rear sliding baffle respectively.
Further, a plurality of reinforcing ribs extend to the outer sides of the first anti-collision beams of the main driving side anti-collision beam combination and the auxiliary driving side anti-collision beam combination.
Further, the inner side cavity of the second anti-collision beam of the main driving side anti-collision beam combination and the auxiliary driving side anti-collision beam combination is filled with novel material foamed aluminum.
Further, a safety valve and a rupture disk are arranged on the large-caliber oil cylinder of the three-section type buffering support, and the two devices are combined in parallel.
Further, a damping hole is formed in the small-caliber oil cylinder of the three-section buffering support, so that the small-caliber oil cylinder is communicated with the large-caliber oil cylinder.
The invention provides a novel collision offset multistage buffering energy-absorbing anti-collision beam, which is used for theoretically analyzing the effective design length of a baffle in the system as follows (taking a main driving side as an example):
As shown in fig. 10, assume that: the lower end of the second anti-collision beam at the main driving side is fixedly hinged with a support seat as a point A, the axis of the large fixed hinged support seat is a point B, the outer end of the baffle at the main driving side is a point D, a point crossing the axis of the supporting longitudinal beam perpendicularly through the point D is a point C, the width of the supporting longitudinal beam is H, the length of a line segment AB is L AB, the length of a line segment BC is L BC, the length of a line segment CD is L CD, a circle intersection CD taking the point B as a circle center is arranged at a point E, the length of the line segment CE is L CE, and the point A 1 is the moving point of the point A and moves on an arc AE.
When offset collision occurs, because the deflection radius of the point A is the largest, the required length of the baffle is longer, and the shortest length of the baffle is calculated, so that the contraction of the three-section buffer support is ignored, the fixed hinge support at the lower end of the second anti-collision beam at the main driving side rotates by taking the L AB as the radius and the point B as the circle center, the movement track is the arc AE, and the movement limit position of the point A is considered, namely the point A 1 is intersected with the point E, and the Pythagorean theorem knows that:
∴
The length of the baffle is not shorter than
The maximum deflection angle of the three-section buffer bracket is 45 DEG
∴∠BEC＝∠CBE＝45°
In order to ensure that the baffle plate can play a limiting role and prevent the overlarge deflection angle
The shortest length of the baffle is
∴
I.e. the distance from the welding point at the inner end of the baffle plate to the upper surface of the supporting beam is not more than
The invention provides a novel collision offset multistage buffering energy-absorbing anti-collision beam, which is used for carrying out stress analysis on a design system during offset collision (taking a main driving side as an example) as follows:
As shown in fig. 9, AC is a tangential plane of an action point of the reaction force F 1, BE is a three-section buffer bracket combination, DF is a supporting cross beam, EG is a supporting longitudinal beam, an action effect of the reaction force F 1 may BE divided into two action effects, one is a component force F 11 in a CA direction, the three-section buffer bracket and the anti-collision beam combination deflect under the action of the component force F 11, the other is a component force F 12 in the BE direction and acts on the supporting cross beam DF, an action effect of the component force F 12 may BE divided into two action effects, one is a component force F 121 in the EG direction, the vehicle is decelerated under the action of the component force F 121, the other is a component force F 122 in the DF direction and acts on the supporting cross beam DF, and the action effect of the component force F 122 may deflect the vehicle head to a non-collision side.
(III) beneficial effects
Compared with the prior art, the technical scheme provided by the invention has the following remarkable effects:
(1) According to the novel collision offset multistage buffering energy-absorbing anti-collision beam, the three-stage energy-absorbing structure design is adopted, so that the whole anti-collision buffering beam has a good anti-collision buffering effect, the influence of impact damage energy generated during high-speed collision in an automobile on the automobile body is reduced, the anti-collision beam body is prevented from being deformed and damaged greatly due to multiple protection of the multistage energy-absorbing structure during low-speed collision of the automobile, the maintenance cost is reduced, the durability of the automobile is improved, and the novel material foamed aluminum is filled in the second anti-collision beam, so that the strength is high, the weight is light, and the energy-absorbing effect is good.
(2) According to the novel collision offset multistage buffering energy-absorbing anti-collision beam, the offset collision steering structure design is adopted, when a vehicle collides in an offset manner, according to the theory of acting force and reacting force, external impact force can generate a force which is vertical to the collision direction and horizontally faces to the non-collision side to the vehicle body, so that the vehicle head is displaced to the non-collision side, the front collision is slowed down to reduce the damage degree of the vehicle body, and the anti-collision beam is combined and reset under the action of a reset spring after collision so as to prevent secondary collision.
(3) According to the novel collision offset multistage buffering energy-absorbing anti-collision beam, through adopting the damping hole structural design, the two-stage oil cylinders bear impact energy jointly, the buffering effect is better, and through adopting the safety valve and rupture disc combined design, the occurrence rate of accidents such as cylinder explosion and the like caused by overlarge impact force of the three-section buffering support is reduced to a great extent.
(4) According to the novel collision offset multistage buffering energy-absorbing anti-collision beam, due to the design of the supporting cross beam, when the three-stage energy-absorbing structure is damaged in the collision process, the supporting cross beam of the system can resist certain collision damage energy, the overall impact resistance level of the anti-collision beam system is improved, and the system adopts a purely mechanical design, so that the structure is simple, safe and reliable.
Drawings
FIG. 1 is a schematic view of a novel impact deflection multistage buffering energy-absorbing impact beam;
FIG. 2 is a schematic view of the primary steering side offset crash results of a novel impact offset multistage buffering energy absorbing impact beam of the present invention;
FIG. 3 is a schematic view of the front large area collision results of a novel collision offset multi-stage buffering energy absorbing anti-collision beam of the present invention;
FIG. 4 is a schematic view of a novel impact deflection multistage buffering energy-absorbing crash Liang Zhengmian small-area crash result according to the present invention;
FIG. 5 is a schematic cross-sectional view of an impact beam assembly of a novel impact deflection multistage buffering energy absorbing impact beam of the present invention;
FIG. 6 is a schematic view of a three-section type bumper bracket assembly and its connection structure for a novel impact deflection multistage bumper energy absorbing bumper beam of the present invention;
FIG. 7 is a schematic diagram showing the connection structure of a support rod of a three-section type buffering support of a novel collision offset multistage buffering energy-absorbing anti-collision beam and a small-caliber oil cylinder;
FIG. 8 is a schematic view of the connection of the connecting spring and the small fixed hinge support and the return spring and the small fixed hinge support of the novel impact deflection multistage buffering energy-absorbing impact beam of the present invention;
FIG. 9 is a simplified analysis of the principal steering side deflection crash stress of a novel crash deflection multistage buffering energy absorbing crash beam of the present invention;
FIG. 10 is a schematic view of a primary steering side impact analysis of a novel impact deflection multistage buffering energy absorbing impact beam of the present invention.
In the figure: 1-a main driving side anti-collision beam combination; 2-a primary driving side first bumper beam; 3-reinforcing ribs; 4-a damping spring; 5-a primary driving side second bumper beam; 6-foamed aluminum material; 7-a main driving side three-section buffer bracket; 8-supporting a connecting rod; 9-supporting plates; 10-connecting a spring; 11-a secondary side first impact beam; 12-a secondary side second impact beam; 13-a co-pilot side three-section buffer bracket; 14-a co-pilot side impact beam combination; 15-a copilot side return spring; 16-supporting a cross beam; 17-a passenger side barrier; 18-connecting plates; 19-a buffer spring; 20-fixing the sleeve; 21-supporting stringers; 22-a main driving side barrier; 23-a main driving side return spring; 24-front sliding baffle; 25-a rear sliding baffle; 26-upper slide groove; 27-a lower sliding channel; 28-supporting rods; 29-a large-caliber oil cylinder; 30-long bolt; 31-large fixed hinge support; 32-rupture disc; 33-a safety valve; 34-a small-caliber oil cylinder; 35-small fixed hinge support; 36-damping holes; 37-short pins.
Detailed Description
The objects, advantages and features of the present invention are illustrated and explained by the following non-limiting description of preferred embodiments. These embodiments are only typical examples of the technical scheme of the invention, and all technical schemes formed by adopting equivalent substitution or equivalent transformation fall within the scope of the invention.
In the description of the embodiments, it should be noted that the directions or positional relationships indicated by the terms "center", "first", "second", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples.
As shown in fig. 1, fig. 5, fig. 6, fig. 7, and fig. 8, the present invention provides a novel impact deflection multistage buffering energy-absorbing anti-collision beam, which includes: the main driving side anti-collision beam combination 1, the auxiliary driving side anti-collision beam combination 14, the connecting spring 10, the supporting plate 9, the main driving side three-section buffer support 7, the auxiliary driving side three-section buffer support 13, the main driving side return spring 23, the auxiliary driving side return spring 15, the main driving side baffle 22, the auxiliary driving side baffle 17, the supporting longitudinal beam 16, the connecting plate 18, the fixing sleeve 20, the buffer spring 19, the supporting connecting rod 8 and the supporting longitudinal beam 21, the main driving side anti-collision beam combination 1 is divided into two parts, namely the main driving side first anti-collision beam 2 and the main driving side second anti-collision beam 5, wherein a plurality of reinforcing ribs 3 extend outside the main driving side first anti-collision beam 2, a front sliding baffle 24, a rear sliding baffle 25, an upper sliding groove 26, a lower sliding groove 27 and a damping spring 4 are arranged inside, the upper sliding groove 26 and the lower sliding groove 27 are respectively arranged on the upper top surface and the lower bottom surface inside the first anti-collision beam 2 at the main driving side, the front sliding baffle 24 and the rear sliding baffle 25 are both clamped in the upper sliding groove 26 and the lower sliding groove 27, the damping springs 4 are arranged between the front sliding baffle 24 and the rear sliding baffle 25, three groups are arranged from top to bottom, the front end and the rear end are respectively welded on the rear end surface of the front sliding baffle 24 and the front end surface of the rear sliding baffle 25, the cavity inside the second anti-collision beam 5 at the main driving side is filled with foamed aluminum material 6, the first anti-collision beam 2 at the main driving side is clamped at the front end of the second anti-collision beam 5 at the main driving side, the auxiliary anti-collision beam combination 14 has the same composition structure as the main driving side anti-collision beam combination 1 and is symmetrical about the middle part, the main driving side anti-collision beam combination 1 and the auxiliary driving side anti-collision beam combination 14 are fixedly connected through the connecting spring 10 in the middle, the main driving side three-joint type buffer support 7 is arranged between the main driving side second anti-collision beam 5 and the supporting beam 16 and is divided into two groups, namely, the main driving side second anti-collision beam 5 and the supporting beam 16, one group is perpendicular to the supporting beam 16, the other group and the outer side of the supporting beam 16 form an included angle of 45 degrees, the main driving side three-joint type buffer support 7 and the main driving side second anti-collision beam 5 are fixedly connected through a small fixed support 35 and a short bolt 37, the small fixed hinge support 35 is welded on the main driving side second anti-collision beam 5, the main driving side three-joint type buffer support 7 and the supporting beam 16 are connected through a large fixed hinge support 31 and a long bolt 30, the large fixed hinge support 31 is welded on the supporting beam 16, the auxiliary driving side three-joint type buffer support 13 and the fixed form are obliquely arranged at the supporting beam 16, the same as the main driving side three-joint type buffer support 7 and the lower end face 8 are welded on the lower end face of the main driving side second anti-collision beam 8 and the lower end support 20 and the inner end face of the main driving side buffer support 9 and the lower end face 8 is welded on the small hinge support 35, the small fixed support end face of the main driving side three-joint type buffer support is welded on the main driving side three-joint type buffer support 7 and the main driving side buffer support 8 is fixedly connected with the main buffer support 8, the main buffer support is welded with the end 8 and the main buffer support is welded with the end is welded with the small buffer support 3, and the upper end all with support crossbeam 16 vertical welding, connecting plate 18 weld in support longeron 21 lower extreme, connecting plate 18 accessible fixing bolt fixes on the automobile body longeron, main driving side baffle 22 with the interior end of copilot side baffle 17 all vertical welding in on the support longeron 21, main driving side reset spring 23 is located main driving side baffle 22 with main driving side second crashproof roof beam 5 between, and both ends are connected respectively through the fixed hinge support main driving side baffle 22 outer end with main driving side second crashproof roof beam 5 lower extreme.
Further, the safety valve 33 and the rupture disk 32 are arranged on the large-caliber oil cylinder 29 of the main driving side three-section type buffer bracket 7 and the auxiliary driving side three-section type buffer bracket 13, by adopting the combined design of the safety valve 33 and the rupture disk 32, the occurrence rate of accidents such as cylinder explosion and the like caused by overlarge impact force of the three-section type buffer bracket is greatly reduced, the calibrated explosion pressure of the rupture disk 32 is slightly lower than the design pressure of the large-caliber oil cylinder 29, the opening pressure of the safety valve 33 is slightly lower than the calibrated explosion pressure of the rupture disk 32, and the damping hole 36 is arranged on the small-caliber oil cylinder 34, so that the small-caliber oil cylinder 34 is communicated with the large-caliber oil cylinder 29, and the pressure difference between the small-caliber oil cylinder 34 and the large-caliber oil cylinder 29 is kept to be zero in the non-collision.
The invention provides a novel collision offset multistage buffering energy-absorbing anti-collision beam, which is typically exemplified as follows:
① Offset collision
As shown in fig. 2, 5, 6 and 7, when the vehicle collides with an obstacle from the side, a reaction force F 1 generated by the vehicle collision acts on one side of the novel collision offset multistage buffering energy absorbing and crashproof beam (in the case of a main driving side collision, for example), the main driving side first crashproof beam 2 and the main driving side second crashproof beam 5 are relatively displaced due to the reaction force F 1, the front sliding baffle 24 and the rear sliding baffle 25 are relatively displaced, the damping spring 4 contracts and absorbs energy due to the extrusion, the main driving side second crashproof beam 5 is slightly deformed, and the aluminum foam material 6 contracts and absorbs energy due to the extrusion, the support rod 28 displaces downward and increases the internal hydraulic pressure of the small-caliber oil cylinder 34, a pressure difference is generated under the pressure, the internal pressure liquid of the small-caliber oil cylinder 34 flows to the large-caliber oil cylinder 29 through the damping hole 36, and the internal hydraulic pressure of the large-caliber oil cylinder 29 is increased, if the internal hydraulic pressure of the large-caliber oil cylinder 29 is higher than the opening pressure of the safety valve 33, the safety valve 33 is opened, a certain amount of liquid is released to reduce the pressure, if the instantaneous impact force is higher than the calibrated bursting pressure of the burst disk 32, the burst disk 32 is opened, the internal hydraulic pressure of the large-caliber oil cylinder 29 is rapidly reduced, the component force F 11 of the reaction force F 1 is parallel to the tangential plane acting on the collision point, the main driving side anti-collision beam combination 1 deflects outwards by taking the axis center of the long bolt 30 as the center of a circle, the main driving side return spring 23 is compressed, the connecting spring 10 is stretched, the auxiliary driving side return spring 15 is stretched, the component force F 12 of the reaction force F 1 is perpendicular to the tangential plane acting on the collision point, the component force of the component force F 12 can generate a force which is vertical to the collision direction and horizontally faces to the non-collision side to enable the vehicle head to displace to the non-collision side, so that the displacement track of the vehicle deviates from an obstacle, the primary driving side first anti-collision beam 2 and the primary driving side second anti-collision beam 5 relatively displace and reset under the action of the damping spring 4 after collision, and the primary driving side anti-collision beam combination 1 and the secondary driving side anti-collision beam combination 14 reset under the combined action of the secondary driving side reset spring 15 and the connecting spring 10 so as to prevent secondary collision.
② Frontal large area collision
As shown in fig. 3, 5, 6 and 7, when the front of the vehicle collides with an obstacle in a large area, a reaction force F 2 generated by the vehicle collision acts on a novel collision offset multistage buffering energy absorbing bumper Liang Zhengmian (the same main and auxiliary driving sides), the main driving side first bumper beam 2 and the main driving side second bumper beam 5 are relatively displaced, the front sliding baffle 24 and the rear sliding baffle 25 are relatively displaced, the damping spring 4 contracts and absorbs energy by extrusion, the main driving side second bumper beam 5 is slightly deformed, the foamed aluminum material 6 contracts and absorbs energy by extrusion, the supporting rod 28 displaces downward and increases the internal hydraulic pressure of the small-caliber oil cylinder 34, a pressure difference is generated under the pressure effect, the internal hydraulic pressure of the small-caliber oil cylinder 34 flows to the large-caliber oil cylinder 29 through the damping hole 36, and the internal hydraulic pressure of the large-caliber oil cylinder 29 is increased, if the internal hydraulic pressure of the large-caliber oil cylinder 29 is higher than the opening pressure of the safety valve 33, the safety valve 33 is opened, a certain amount of liquid is released to reduce the pressure, if the instantaneous impact force is higher than the calibrated bursting pressure of the bursting disc 32, the bursting disc 32 is opened, the internal hydraulic pressure of the large-caliber oil cylinder 29 is quickly reduced, the supporting plate 9 is downwardly displaced under the action of the main driving side anti-collision beam combination 1, the supporting connecting rod 8 presses the buffer spring 19 under the action of the supporting plate 9, the buffer spring 19 is contracted, the return spring 23 is contracted due to the downward displacement of the main driving side anti-collision beam combination 1, and the main driving side first anti-collision beam 2 and the main driving side second anti-collision beam 5 are relatively displaced and reset under the action of the damping spring 4 after the impact, the main driving side anti-collision beam combination 1 is reset under the combined action of the reset spring 23, the damping spring 19, the support connecting rod 8 and the support plate 9 to prevent secondary collision.
③ Frontal small area collision
As shown in fig. 4, 5, 6 and 7, when the vehicle collides with an obstacle in a small area on the front, the reaction force F 3 generated by the vehicle collision acts on the novel collision offset multistage buffering energy absorbing bumper Liang Zhengmian (the same main and auxiliary driving sides), the main driving side first bumper beam 2 and the main driving side second bumper beam 5 are relatively displaced, the front sliding baffle 24 and the rear sliding baffle 25 are relatively displaced, the damping spring 4 contracts and absorbs energy by extrusion, the main driving side second bumper beam 5 is slightly deformed, the foamed aluminum material 6 contracts and absorbs energy by extrusion, the supporting rod 28 displaces downward and increases the internal hydraulic pressure of the small-caliber oil cylinder 34, a pressure difference is generated under the pressure effect, the internal hydraulic pressure of the small-caliber oil cylinder 34 flows to the large-caliber oil cylinder 29 through the damping hole 36, and the internal hydraulic pressure of the large-caliber oil cylinder 29 is increased, if the internal hydraulic pressure of the large-caliber oil cylinder 29 is higher than the opening pressure of the safety valve 33, the safety valve 33 is opened, a certain amount of liquid is released to reduce the pressure, if the instantaneous impact force is higher than the calibrated bursting pressure of the bursting disc 32, the bursting disc 32 is opened, the internal hydraulic pressure of the large-caliber oil cylinder 29 is rapidly reduced, the main driving side anti-collision beam combination 1 deflects inwards by taking the axis of the long bolt 30 as the center of a circle under the action of the main driving side buffering bracket 7, the connecting spring 10 is contracted, the supporting plate 9 is downwards displaced under the action of the main driving side anti-collision beam combination 1, the supporting connecting rod 8 presses the buffering spring 19 under the action of the supporting plate 9, the buffering spring 19 is contracted to absorb energy, the return spring 23 stretches due to the inward rotation of the main driving side anti-collision beam combination 1, and after collision, the main driving side first anti-collision beam 2 and the main driving side second anti-collision beam 5 relatively displace and return under the action of the damping spring 4, and the main driving side anti-collision beam combination 1 returns under the combined action of the connecting spring 10, the return spring 23, the damping spring 19, the support connecting rod 8 and the support plate 9 to prevent secondary collision.
The embodiments of the invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (4)
1. Novel collision skew multistage buffering energy-absorbing anticollision roof beam, characterized in that includes: the main driving side anti-collision beam combination (1), the auxiliary driving side anti-collision beam combination (14), the connecting spring (10), the supporting plate (9), the main driving side three-section buffer support (7), the auxiliary driving side three-section buffer support (13), the main driving side return spring (23), the auxiliary driving side return spring (15), the main driving side baffle (22), the auxiliary driving side baffle (17), the supporting cross beam (16), the connecting plate (18), the fixing sleeve (20), the buffer spring (19), the supporting connecting rod (8) and the supporting longitudinal beam (21), the main driving side anti-collision beam combination (1) is divided into two parts, namely a main driving side first anti-collision beam (2) and a main driving side second anti-collision beam (5), wherein a plurality of reinforcing ribs (3) extend outside the main driving side first anti-collision beam (2), a front sliding baffle (24), a rear sliding baffle (25), an upper sliding groove (26), a lower sliding groove (27) and a damping spring (4) are arranged inside, the upper sliding groove (26) and the lower sliding groove (27) are respectively arranged on the inner side of the main driving side first anti-collision beam (2) and the upper sliding groove (25) and the lower sliding groove (27) respectively, the damping springs (4) are positioned between the front sliding baffle (24) and the rear sliding baffle (25), three groups of damping springs are formed from top to bottom, the front end and the rear end are respectively welded on the rear end face of the front sliding baffle (24) and the front end face of the rear sliding baffle (25), foam aluminum materials (6) are filled in the inner cavity of the main driving side second anti-collision beam (5), the main driving side first anti-collision beam (2) is clamped at the front end of the main driving side second anti-collision beam (5), the auxiliary driving side anti-collision beam combination (14) is of the same structure as the main driving side anti-collision beam combination (1), and is symmetrical to the middle part, the main driving side anti-collision beam combination (1) and the auxiliary driving side anti-collision beam combination (14) are fixedly connected through the connecting springs (10) in the middle part, the main driving side three-section type buffer brackets (7) are arranged between the main driving side second anti-collision beam (5) and the supporting cross beam (16), the main driving side first anti-collision beam and the supporting cross beam (16) are respectively arranged at two sides of the main driving side anti-collision beam combination (16) and the two sides of the main driving side anti-collision beam combination (16) respectively, the main driving side anti-collision beam combination (1) and the auxiliary driving side anti-collision beam combination (25) are respectively, the main driving side anti-collision beam combination is provided with two inclined beams (37 respectively, the small fixed hinged support (35) is welded on the second anti-collision beam (5) on the main driving side, a large fixed hinged support (31) and a long bolt (30) are adopted between the three-section buffer support (7) on the main driving side and the supporting cross beam (16), the large fixed hinged support (31) is welded on the supporting cross beam (16), the three-section buffer support (13) on the auxiliary driving side and the fixed form are the same as the three-section buffer support (7) on the main driving side, the small fixed hinged support (13) and the fixed form are symmetrical with respect to the middle part, the lower end of the fixed sleeve (20) is welded on the supporting cross beam (16), the buffer spring (19) is installed in the fixed sleeve (20), the lower end of the buffer spring (19) is contacted with the supporting cross beam (16), the lower end of the supporting connecting rod (8) is clamped in the fixed sleeve (20), the upper end of the buffer spring (19) is contacted with the supporting connecting rod (8), the small fixed hinged support (35) is hinged with the small fixed support (7), the lower end face of the two supporting rods (9) is welded on the upper end faces of the two supporting cross beams (12) respectively, the two end faces (21) are welded on the two vertical end faces of the upper end faces (12) of the two supporting cross beams respectively, the connecting plate (18) is welded at the lower end of the supporting longitudinal beam (21), the connecting plate (18) can be fixed on the longitudinal beam of the vehicle body through fixing bolts, the inner ends of the main driving side baffle (22) and the auxiliary driving side baffle (17) are vertically welded on the supporting longitudinal beam (21), the main driving side return spring (23) is positioned between the main driving side baffle (22) and the main driving side second anti-collision beam (5), two ends of the main driving side baffle (22) are respectively connected with the lower end of the main driving side second anti-collision beam (5) through fixing hinge supports, a plurality of reinforcing ribs (3) extend from the outer side of the main driving side first anti-collision beam (2), a plurality of main driving side damping springs (4), a front sliding baffle (24), a rear sliding baffle (25), an upper sliding groove (26) and a lower sliding groove (27) are arranged in the inside, the front sliding baffle (24) and the rear sliding baffle (25) are respectively clamped at the upper sliding groove (26) and the lower sliding groove (27), the front sliding baffle (24) and the rear sliding baffle (25) are respectively welded at equal intervals, the foam aluminum material (6) is filled in the cavity of the inner side of the second anti-collision beam (5) at the main driving side, and the structure of the secondary driving side is the same as that of the main driving side and is symmetrical about the middle part.
2. The novel impact deflection multistage buffering energy-absorbing impact beam according to claim 1, wherein: the large-caliber oil cylinder (29) of the main driving side three-section type buffer support (7) is provided with a safety valve (33) and a rupture disc (32), the two devices are combined in parallel, the opening pressure of the safety valve (33) is lower than the calibrated bursting pressure of the rupture disc (32), the calibrated bursting pressure of the rupture disc (32) is lower than the design pressure of the large-caliber oil cylinder (29), and the structure of the auxiliary driving side is identical to that of the main driving side and is symmetrical about the middle part.
3. The novel impact deflection multistage buffering energy-absorbing impact beam according to claim 2, wherein: the small-caliber oil cylinder (34) of the main driving side three-section type buffer bracket (7) is provided with a damping hole (36), so that the small-caliber oil cylinder (34) is communicated with the large-caliber oil cylinder (29), the hydraulic pressure difference between the small-caliber oil cylinder (34) and the large-caliber oil cylinder (29) is zero in the non-collision process, and the structure of the auxiliary driving side is the same as that of the main driving side and is symmetrical about the middle part.
4. The novel impact deflection multistage buffering energy-absorbing impact beam according to claim 1, wherein: the main driving side anti-collision beam combination (1) can rotate by taking the axis of the long bolt (30) as the center of a circle under the supporting action of the main driving side three-section buffer bracket (7), the rotation angle is between 0 and 45 degrees, and the auxiliary driving side structure is the same as the main driving side structure and is symmetrical about the middle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011094817.1A CN112092757B (en) | 2020-10-14 | 2020-10-14 | Novel multistage buffering energy-absorbing anti-collision beam of collision skew |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011094817.1A CN112092757B (en) | 2020-10-14 | 2020-10-14 | Novel multistage buffering energy-absorbing anti-collision beam of collision skew |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112092757A CN112092757A (en) | 2020-12-18 |
| CN112092757B true CN112092757B (en) | 2024-05-17 |
Family
ID=73783873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011094817.1A Active CN112092757B (en) | 2020-10-14 | 2020-10-14 | Novel multistage buffering energy-absorbing anti-collision beam of collision skew |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112092757B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113581116B (en) * | 2021-07-12 | 2023-12-12 | 佛山市顺德区东亚汽车部件有限公司 | Anti-collision impact-resistant automobile plastic part |
| CN114275046B (en) * | 2021-12-29 | 2022-11-22 | 安徽江淮汽车集团股份有限公司 | Vehicle collision energy-absorbing device |
| CN114312551B (en) * | 2022-03-09 | 2022-06-17 | 浙江工业大学 | Hydrogen energy long tube trailer with intelligent safety protection device and safety protection method |
| CN115042608A (en) * | 2022-06-16 | 2022-09-13 | 新疆钵施然智能农机股份有限公司 | Multifunctional universal chassis of agricultural vehicle |
| CN115303219A (en) * | 2022-09-29 | 2022-11-08 | 四川护邑科技有限公司 | Automobile anti-collision assembly |
| CN115817558B (en) * | 2023-01-05 | 2023-04-28 | 邢台市晟玉建材有限公司 | Vehicle collision energy-absorbing device based on urban rail transit |
| CN116534128B (en) * | 2023-07-04 | 2024-04-16 | 云南滇坡机械设备有限公司 | Automobile rear longitudinal beam safety structure |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100060135A (en) * | 2008-11-27 | 2010-06-07 | 현대자동차주식회사 | Reinforcing structure of bumper backup beam |
| CN206052584U (en) * | 2016-08-02 | 2017-03-29 | 安徽理工大学 | A kind of flexible buffer energy-absorbing power generation type speed strains deceleration strip |
| CN109229042A (en) * | 2018-08-20 | 2019-01-18 | 上海思致汽车工程技术有限公司 | A kind of automobile buffer beam |
| CN208897015U (en) * | 2018-09-05 | 2019-05-24 | 天津联捷塑料制品有限公司 | A kind of car insurance bar that damping effect is excellent |
| CN209987881U (en) * | 2019-03-18 | 2020-01-24 | 哈尔滨理工大学 | Automobile collision buffer device |
| CN210149273U (en) * | 2019-05-17 | 2020-03-17 | 中国第一汽车股份有限公司 | Little overlapping offset collision automobile body front end integrated configuration |
| CN111002934A (en) * | 2019-12-23 | 2020-04-14 | 南昌华翔汽车零部件有限公司 | Retractable layering buffering car bumper step by step |
| CN214492797U (en) * | 2020-10-14 | 2021-10-26 | 安徽理工大学 | Novel multistage buffering energy-absorbing anticollision roof beam of collision skew |
-
2020
- 2020-10-14 CN CN202011094817.1A patent/CN112092757B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100060135A (en) * | 2008-11-27 | 2010-06-07 | 현대자동차주식회사 | Reinforcing structure of bumper backup beam |
| CN206052584U (en) * | 2016-08-02 | 2017-03-29 | 安徽理工大学 | A kind of flexible buffer energy-absorbing power generation type speed strains deceleration strip |
| CN109229042A (en) * | 2018-08-20 | 2019-01-18 | 上海思致汽车工程技术有限公司 | A kind of automobile buffer beam |
| CN208897015U (en) * | 2018-09-05 | 2019-05-24 | 天津联捷塑料制品有限公司 | A kind of car insurance bar that damping effect is excellent |
| CN209987881U (en) * | 2019-03-18 | 2020-01-24 | 哈尔滨理工大学 | Automobile collision buffer device |
| CN210149273U (en) * | 2019-05-17 | 2020-03-17 | 中国第一汽车股份有限公司 | Little overlapping offset collision automobile body front end integrated configuration |
| CN111002934A (en) * | 2019-12-23 | 2020-04-14 | 南昌华翔汽车零部件有限公司 | Retractable layering buffering car bumper step by step |
| CN214492797U (en) * | 2020-10-14 | 2021-10-26 | 安徽理工大学 | Novel multistage buffering energy-absorbing anticollision roof beam of collision skew |
Non-Patent Citations (1)
| Title |
|---|
| 汽车偏置碰撞中前防撞梁结构优化;孙会伟;张向超;刘志法;辛勇;杨哲;;汽车工程师;20170625(第06期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112092757A (en) | 2020-12-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112092757B (en) | Novel multistage buffering energy-absorbing anti-collision beam of collision skew | |
| US7810437B2 (en) | Shock absorber for the front or rear region of a railborne vehicle having at least one energy absorption device | |
| US8454080B2 (en) | Bumper beam with load transferring section | |
| US20170210316A1 (en) | Bumper unit for a motor vehicle | |
| US20190077420A1 (en) | Collision energy absorbing system concentrated around the vhs power car and first vehicle | |
| KR20120062217A (en) | Crash Box of Car Bumper | |
| CN214492797U (en) | Novel multistage buffering energy-absorbing anticollision roof beam of collision skew | |
| CN213083094U (en) | Automobile front bumper anti-collision beam | |
| KR100921993B1 (en) | Vehicle | |
| CN113263999A (en) | Automobile front end anti-collision structure | |
| CN110834673A (en) | Vehicle body assembly, vehicle with vehicle body assembly and threshold beam reinforcing component with vehicle body assembly | |
| WO2022042161A1 (en) | Central coupler applicable to collision energy management system and locomotive having same | |
| CN110549972B (en) | Crash energy absorbing device for automobile and automobile | |
| CN213262277U (en) | Anti-collision system and vehicle | |
| CN221418176U (en) | Anti-collision beam for automobile | |
| CN114261358A (en) | Vehicle rear-end collision buffer structure and vehicle | |
| CA3191402A1 (en) | Energy dissipation device | |
| CN205930899U (en) | Car front longitudinal assembly and use its car | |
| CN112124433A (en) | Automobile anti-collision energy absorption system and anti-collision energy absorption method thereof | |
| JP2023522686A (en) | Vehicle-mounted crash attenuator | |
| CN115214507B (en) | Buffer device and crashproof car | |
| CN211567864U (en) | High-speed collision energy-absorbing device of heavy-duty truck | |
| CN114274903B (en) | Automobile outer packaging structure and automobile | |
| WO2019042554A1 (en) | A front underrun protection assembly | |
| CN118753197B (en) | A double anti-collision safety type automobile anti-collision beam structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |