CN114872653A - Bumper structure combined by negative Poisson ratio sandwich beam structure and energy absorption block - Google Patents

Abstract

The invention discloses a bumper structure composed of a negative Poisson's ratio sandwich beam structure and an energy-absorbing block, belonging to the technical field of bumper structures. A side connecting plate is fixed on the side of a vehicle frame through a screw penetrating a first fixing hole. It is fixed at the bottom end of the frame through the second fixing hole through the screw. When the bumper is hit, the license plate card is compressed to adjust the first inner sliding cylinder to slide in the second outer sliding cylinder. The sliding cylinder adjusts and compresses the first inner limit spring, so that the hydraulic oil in the second outer sliding cylinder is pressed into the hydraulic oil diversion chamber, and enters the limit plate to lift the inner lifting plate. When the first inner sliding cylinder is used, the air in the rubber buffer cover is further compressed, so that the air enters the outer regulating cylinder through the air duct, and the buffer regulating plate is adjusted to protrude outward to collide with the impactor to further constitute buffering.

Description

A bumper structure composed of a negative Poisson's ratio sandwich beam structure and an energy-absorbing block

technical field

The invention relates to a bumper structure, in particular to a bumper structure composed of a negative Poisson's ratio sandwich beam structure and an energy-absorbing block, belonging to the technical field of bumper structures.

Background technique

A car bumper is a safety device that absorbs and mitigates external impact forces and protects the front and rear parts of the body.

The bumper structure in the prior art only adopts the shell structure to be fixed on the vehicle, and such a structure design has the following problems:

1. The bumper structure of the car cannot achieve a good buffer function when it is impacted, and it does not realize the protection function of the top cover and the engine when buffering;

2. The side of the automobile bumper structure in the prior art is often the surface that is easy to receive impact, but the side is also a very fragile side, which is easily dented and damaged when it is impacted;

3. When the automobile bumper structure in the prior art is impacted, it cannot reversely derive the force of the impact, and thus only has the problems of buffering and damage by the impact force;

Therefore, a bumper structure composed of a negative Poisson's ratio sandwich beam structure and an energy-absorbing block is designed to optimize the above problems.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide a bumper structure which is composed of a negative Poisson's ratio sandwich beam structure and an energy-absorbing block. The screw is fixed at the bottom end of the frame through the second fixing hole. When the bumper is hit, the license plate card is compressed to adjust the first inner sliding cylinder to slide in the second outer sliding cylinder, and the first inner sliding cylinder is adjusted through the first inner sliding cylinder. Compress the first inner limit spring to press the hydraulic oil in the second outer sliding cylinder into the hydraulic oil diversion chamber, and make it enter the limit plate to lift the inner lift plate. When sliding the cylinder, the air in the rubber buffer cover is further compressed, so that the air enters the outer adjustment cylinder through the air duct, and the buffer adjustment plate is adjusted to protrude outward to collide with the impactor to further form a buffer. After the position plate and the hydraulic oil diversion chamber, the top of the inner lift plate is formed into a set of protective walls to further protect the engine and other accessories. When the bumper body is hit, it is synchronized with the S-shaped elastic clip to form a buffer protection at the bottom. When the side arc-shaped plate is hit, the adjustment slider is adjusted on the inner side of the arc-shaped sliding rail, and then the adjustment slider compresses the side hinged elastic plate to adjust the outer adjustment spring, the inner arc rod and the outer arc cylinder. When the side arc plate is impacted, the second inner sliding cylinder is compressed at the same time to adjust and compress the second inner limit spring to cooperate with the side arc plate buffer to protect the side arc plate structure.

Object of the present invention can be achieved by adopting the following technical solutions:

A bumper structure composed of a negative Poisson's ratio sandwich beam structure and an energy-absorbing block includes a bumper body, and a first buffer cylinder assembly is installed on the front of the bumper body at equal intervals. A license plate card is installed at the outer end, a rubber buffer cover is connected to the outer edge of the license plate card, and the outer end of the rubber buffer cover is connected with the front of the bumper body and is connected by the bumper body, The license plate card plate and the rubber buffer cover form a sealed space. The bottom of the bumper body is provided with a passive buffer cylinder assembly, and the passive buffer cylinder assembly is communicated with the interior of the rubber buffer cover through an air duct. There is a top lift cylinder assembly communicating with the first buffer cylinder assembly, side arc plates are integrally formed on both sides of the bumper body, and arc steel skeleton components are installed on the inner top and bottom of the side arc plate. , the inner side of the arc-shaped reinforcement frame assembly is provided with a linkage hinged sliding plate assembly that can slide inside the arc-shaped reinforcement frame assembly, the end of the linkage hinged sliding plate assembly is hinged with a fixed plate assembly, and the front of the fixed plate assembly is A second buffer cylinder assembly is installed in the middle, an arc-shaped buffer rod assembly is arranged between the fixed plate assembly and the linkage hinged sliding plate assembly, and S-shaped elastic clip assemblies are installed at equal intervals at the bottom of the bumper body.

Preferably, the first buffer cylinder assembly includes a second outer sliding cylinder, a first inner limit spring, a first inner sliding cylinder, hydraulic oil and an oil guide pipe, and second outer sliding cylinders are installed at equal intervals at the top of the outer side of the bumper body. A sliding cylinder, a first inner limiting spring is installed at the inner end of the second outer sliding cylinder, a first inner sliding cylinder is installed at the other end of the first inner limiting spring, and the second outer sliding cylinder is installed Hydraulic oil is built in the inside of the second outer sliding cylinder, an oil guide pipe is communicated with the bottom of the second outer sliding cylinder, and a license plate card is installed at the outer end of the first inner sliding cylinder.

Preferably, the passive buffer cylinder assembly includes an outer adjustment cylinder and a buffer adjustment plate, an outer adjustment cylinder is installed at the bottom of the front of the bumper body, and a built-in slidable inside the outer adjustment cylinder is installed inside the outer adjustment cylinder. The buffer adjustment plate, the outer adjustment cylinder is communicated with the rubber buffer cover through the air duct.

Preferably, the top lift cylinder assembly includes a hydraulic oil diversion bin, a limit plate and an inner lift plate, a hydraulic oil diversion bin is installed on the upper back of the bumper body, and the hydraulic oil diversion bin is connected to the The oil guide pipe is connected, a limit plate is installed on the top of the hydraulic oil guide chamber, and the hydraulic oil guide chamber is communicated with the limit plate, and an inner lift plate is inserted into the inner top of the limit plate, and the The inner lift plate partially penetrates the limit plate.

Preferably, the arc-shaped steel skeleton assembly includes an arc-shaped sliding rail and an inner arc-shaped rod, an arc-shaped sliding rail is installed on the inner top and bottom of the side arc-shaped plate, and the inner side of the arc-shaped sliding rail is along the The arc-shaped sliding rail is laterally installed with an inner arc-shaped rod, and the outer side of the inner arc-shaped rod is sleeved with a linkage hinged sliding plate assembly.

Preferably, the linkage hinged sliding plate assembly includes a side hinged elastic plate, an adjustment slider and a linkage hinged rod, the adjustment slider is sleeved on the outer side of the inner arc rod, and the outer side of the adjustment slider passes through the linkage hinged rod A side hinged elastic plate is hinged, and the end of the side hinged elastic plate and the fixed plate assembly are hinged through a spring.

Preferably, the fixing plate assembly includes a side connecting plate and a fixing hole, the end of the side hinged elastic plate is hinged with a side connecting plate through a spring, and the four corners of the side connecting plate are provided with first fixing holes.

Preferably, the second buffer cylinder assembly includes a second outer sliding cylinder, a second inner sliding cylinder and a second inner limit spring, a second outer sliding cylinder is installed in the middle of the front side of the edge connecting plate, the second outer sliding cylinder is A second inner limit spring is installed at the inner end of the outer sliding cylinder, the other end of the second inner limit spring is installed with a second inner sliding cylinder, and the second inner sliding cylinder is connected to the side arc-shaped plate. co-operate.

Preferably, the arc-shaped buffer rod assembly includes an inner arc-shaped rod, an outer adjustment spring and an outer arc-shaped cylinder, the inner arc-shaped rods are installed on both sides of the front side of the side connecting plate, and the inner side of the side arc-shaped plate is installed An outer arc-shaped cylinder is installed in the middle, and the inner arc-shaped rod is partially inserted into the inner side of the outer arc-shaped cylinder. The outer side of the arc cylinder is in contact.

Preferably, the S-shaped elastic clip assembly includes an S-shaped elastic clip and a fixing hole, the bottom of the bumper body is installed with S-shaped elastic clips at equal intervals, and the end of the S-shaped elastic clip is provided with a second fixing holes.

Preferably, the bumper structure further includes the following buffering methods:

Step 1: fix the side connecting plate on the side of the frame by penetrating the first fixing hole with the screw, and fix it at the bottom end of the frame by penetrating the second fixing hole with the screw;

Step 2: When the bumper is hit, the license plate card is compressed to adjust the first inner sliding cylinder to slide in the second outer sliding cylinder;

Step 3: Adjust and compress the first inner limit spring through the first inner sliding cylinder, so that the hydraulic oil in the second outer sliding cylinder is pressed into the hydraulic oil diversion chamber, and then enters into the limit plate to push the inner lift plate up;

Step 4: When the first inner sliding cylinder is compressed, the air in the rubber buffer cover is further compressed, so that the air enters the outer adjustment cylinder through the air duct, and the buffer adjustment plate is adjusted to protrude outward to collide with the impactor. constitute a buffer;

Step 5: After the hydraulic oil enters the limit plate and the hydraulic oil diversion chamber, further protect the engine and other accessories by forming a set of protective walls on the top of the inner lifting plate;

Step 6: When the bumper body is hit, synchronously cooperate with the S-shaped elastic clip to form a buffer protection at the bottom;

Step 7: When the side arc plate is hit, adjust the adjustment slider on the inner side of the arc slide rail, and then adjust the outer adjustment spring, inner arc rod and outer arc by adjusting the slider to compress the side hinge elastic plate The shaped cylinder constitutes a side buffer;

Step 8: When the side arc plate is impacted, the second inner sliding cylinder is simultaneously compressed to adjust and compress the second inner limit spring to cooperate with the side arc plate buffer to protect the side arc plate structure.

Beneficial technical effects of the present invention:

The present invention provides a bumper structure composed of a negative Poisson's ratio sandwich beam structure and an energy-absorbing block. The side connecting plate is fixed to the side of the frame through the first fixing hole through the screw, and the screw penetrates through the first fixing hole. The two fixing holes are fixed at the bottom end of the frame. When the bumper is hit, the license plate card is compressed to adjust the first inner sliding cylinder to slide in the second outer sliding cylinder, and the first inner sliding cylinder is adjusted to compress the first inner sliding cylinder through the first inner sliding cylinder. The limit spring then presses the hydraulic oil in the second outer sliding cylinder into the hydraulic oil diversion chamber, and makes it enter the limit plate to lift the inner lifting plate. When the first inner sliding cylinder is compressed Then, the air in the rubber buffer cover is further compressed, so that the air enters the outer adjustment cylinder through the air duct, and the buffer adjustment plate is adjusted to extend outward to collide with the impactor to further form a buffer. When the hydraulic oil enters the limit plate and the hydraulic pressure. After the oil diversion chamber, the top of the inner lift plate is formed into a set of protective walls to further protect the engine and other accessories. When the bumper body is hit, it is synchronized with the S-shaped elastic clip to form a buffer protection at the bottom. When the plate is hit, the adjustment slider is adjusted on the inner side of the arc-shaped sliding rail, and then the outer adjustment spring, the inner arc rod and the outer arc cylinder are adjusted by adjusting the slider to compress the side hinged elastic plate to form a side buffer. When the side arc plate is impacted, the second inner sliding cylinder is simultaneously compressed to adjust and compress the second inner limit spring to cooperate with the side arc plate to buffer and protect the side arc plate structure.

Description of drawings

1 is a schematic diagram of the overall first perspective structure of the device according to a preferred embodiment of a bumper structure combined with a negative Poisson’s ratio sandwich beam structure and an energy-absorbing block according to the present invention;

Fig. 2 is a schematic diagram of the overall second perspective structure of the device according to a preferred embodiment of a bumper structure combined with a negative Poisson's ratio sandwich beam structure and an energy-absorbing block according to the present invention;

3 is a schematic three-dimensional structural schematic diagram of the whole device according to a preferred embodiment of a bumper structure combined with a negative Poisson’s ratio sandwich beam structure and an energy-absorbing block according to the present invention;

4 is a schematic diagram of the overall fourth perspective structure of the device according to a preferred embodiment of a bumper structure combined with a negative Poisson’s ratio sandwich beam structure and an energy-absorbing block according to the present invention;

5 is a perspective structural schematic diagram of a side arc frame assembly from a first perspective of a preferred embodiment of a bumper structure combined with a negative Poisson’s ratio sandwich beam structure and an energy-absorbing block according to the present invention;

6 is a schematic perspective view of the side arc frame assembly of a preferred embodiment of a bumper structure combined with a negative Poisson’s ratio sandwich beam structure and an energy-absorbing block according to the present invention;

7 is a side cross-sectional view of a bumper structure buffer assembly according to a preferred embodiment of a negative Poisson’s ratio sandwich beam structure and an energy-absorbing block combination according to the present invention;

8 is a top view of a bumper structure side buffer assembly of a preferred embodiment of a bumper structure combined with a negative Poisson's ratio sandwich beam structure and an energy absorbing block according to the present invention.

In the picture: 1-bumper body, 2-license plate card, 3-rubber buffer cover, 4-inner lift plate, 5-side arc plate, 6-S type elastic clip, 8-buffer adjustment plate, 9- External adjustment cylinder, 10-limiting plate, 11-hydraulic oil diversion bin, 12-edge connecting plate, 13-side hinged elastic plate, 14-arc sliding rail, 15-adjusting slider, 16-first inner Sliding cylinder, 17-first outer sliding cylinder, 18-second inner sliding cylinder, 19-second outer sliding cylinder, 20-first inner limit spring, 21-oil guide pipe, 22-hydraulic oil, 23-air guide pipe , 24- the second inner limit spring, 25- outer adjustment spring, 26- outer arc cylinder, 27- inner arc rod.

Detailed ways

In order to make the technical solution of the present invention clearer and clearer to those skilled in the art, the present invention will be described in further detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

As shown in FIG. 1-FIG. 8, the present embodiment provides a bumper structure composed of a negative Poisson's ratio sandwich beam structure and an energy-absorbing block, including a bumper body 1, and the front of the bumper body 1 is installed at equal intervals There is a first buffer cylinder assembly, a license plate card 2 is installed at the outer end of the first buffer cylinder assembly, a rubber buffer cover 3 is connected to the outer edge of the license plate card 2, and the outer end of the rubber buffer cover 3 The bumper body 1 is connected to the front of the bumper body 1 and a sealed space is formed by the bumper body 1, the license plate card 2 and the rubber buffer cover 3. The bottom of the bumper body 1 is provided with a passive buffer cylinder assembly, and the passive buffer cylinder assembly passes through the air duct 23 is communicated with the interior of the rubber buffer cover 3, a top lift cylinder assembly connected to the first buffer cylinder assembly is provided at the inner top of the bumper body 1, and side arc plates 5 are integrally formed on both sides of the bumper body 1, The inner top and bottom of the arc-shaped plate 5 are provided with an arc-shaped steel skeleton assembly. The inner side of the arc-shaped steel skeleton assembly is provided with a linkage hinged sliding plate assembly that can slide inside the arc-shaped steel skeleton assembly. The linkage hinged sliding plate assembly A fixed plate assembly is hinged at the end of the fixed plate assembly, and a second buffer cylinder assembly is installed in the front of the fixed plate assembly. An arc-shaped buffer rod assembly is arranged between the fixed plate assembly and the linkage hinged sliding plate assembly. The bottom of the bumper body 1 S-shaped elastic clip components are installed at equal intervals.

The side connecting plate 12 is fixed on the side of the frame through the first fixing hole through the screw, and is fixed at the bottom end of the frame through the second fixing hole through the screw. When the bumper is hit, the license plate card plate is compressed. 2. Adjust the first inner sliding cylinder 16 to slide in the second outer sliding cylinder 17, adjust and compress the first inner limit spring 20 through the first inner sliding cylinder 16, and then press the hydraulic oil 22 in the second outer sliding cylinder 17 into the into the hydraulic oil diversion chamber 11, and make it enter the limit plate 10 to lift the inner lift plate 4. When the first inner sliding cylinder 16 is compressed, the air in the rubber buffer cover 3 is further compressed to make it The air enters into the outer adjustment cylinder 9 through the air guide pipe 23, and adjusts the buffer adjustment plate 8 to extend outward to collide with the impacting object to further form a buffer. After the hydraulic oil 22 enters the limit plate 10 and the hydraulic oil diversion chamber 11 By forming a set of protective walls on the top of the inner lift plate 4 to further protect the engine and other accessories, when the bumper body 1 is hit, it is synchronized with the S-shaped elastic clip 6 to form a buffer protection at the bottom. When it hits, adjust the adjustment slider 15 to slide and adjust on the inner side of the arc-shaped sliding rail 14, and then adjust the outer adjustment spring 25, the inner arc-shaped rod 27 and the outer arc-shaped cylinder 26 through the adjustment slider 15 to compress the side hinged elastic plate 13. To form a side buffer, when the side arc plate 5 is impacted, the second inner sliding cylinder 18 is compressed at the same time to adjust and compress the second inner limit spring 24 to cooperate with the side arc plate 5 to buffer and protect the structure of the side arc plate 5 .

In this embodiment, the first buffer cylinder assembly includes a second outer sliding cylinder 17 , a first inner limit spring 20 , a first inner sliding cylinder 16 , hydraulic oil 22 and an oil guide pipe 21 . A second outer sliding cylinder 17 is installed at equal intervals, a first inner limit spring 20 is installed at the inner end of the second outer sliding cylinder 17, and a first inner sliding cylinder 16 is installed at the other end of the first inner limit spring 20 The inside of the second outer sliding cylinder 17 is built with hydraulic oil 22 , the bottom of the second outer sliding cylinder 17 is connected with an oil guide pipe 21 , and the outer end of the first inner sliding cylinder 16 is installed with a license plate card 2 .

In this embodiment, the passive buffer cylinder assembly includes an outer adjustment cylinder 9 and a buffer adjustment plate 8 , an outer adjustment cylinder 9 is installed at the bottom of the front of the bumper body 1 , and an outer adjustment cylinder 9 is built inside the outer adjustment cylinder 9 . The inner sliding buffer adjustment plate 8 and the outer adjustment cylinder 9 communicate with the rubber buffer cover 3 through the air duct 23 .

In this embodiment, the top lift cylinder assembly includes a hydraulic oil diversion bin 11, a limit plate 10 and an inner lift plate 4. A hydraulic oil diversion bin 11 is installed on the upper back of the bumper body 1, and the hydraulic oil is diverted. The bin 11 is communicated with the oil guide pipe 21, the limit plate 10 is installed on the top of the hydraulic oil guide bin 11, and the hydraulic oil guide bin 11 is communicated with the limit plate 10, and the inner top of the limit plate 10 is inserted with the inner lift plate 4, And the inner lifting plate 4 partially penetrates the limiting plate 10 .

In this embodiment, the arc-shaped steel skeleton assembly includes arc-shaped sliding rails 14 and inner arc-shaped rods. The arc-shaped sliding rails 14 are installed on the inner top and bottom of the side arc-shaped plate 5 , and the inner edge of the arc-shaped sliding rail 14 is The arc-shaped sliding rail 14 is laterally installed with an inner arc-shaped rod, and the outer side of the inner arc-shaped rod is sleeved with a linkage hinged sliding plate assembly.

In this embodiment, the linkage hinged sliding plate assembly includes a side hinged elastic plate 13, an adjustment slider 15 and a linkage hinge rod. The adjustment slider 15 is sleeved on the outer side of the inner arc rod, and the outer side of the adjustment slider 15 is hinged through linkage The rod is hinged with a side hinged elastic plate 13, and the end of the side hinged elastic plate 13 is hinged with the fixed plate assembly through a spring.

In this embodiment, the fixing plate assembly includes an edge connecting plate 12 and a fixing hole, the end of the side hinged elastic plate 13 is hinged with the edge connecting plate 12 through the spring, and the four corners of the edge connecting plate 12 are provided with first fixing holes.

In this embodiment, the second buffer cylinder assembly includes a second outer sliding cylinder 19 , a second inner sliding cylinder 18 and a second inner limit spring 24 , and a second outer sliding cylinder is installed in the middle of the front of the edge connecting plate 12 19. A second inner limit spring 24 is installed at the inner end of the second outer sliding cylinder 19, the other end of the second inner limit spring 24 is installed with a second inner sliding cylinder 18, and the second inner sliding cylinder 18 is connected to the side. The arc-shaped plates 5 cooperate with each other.

In this embodiment, the arc-shaped buffer rod assembly includes an inner arc-shaped rod 27, an outer adjusting spring 25 and an outer arc-shaped cylinder 26. The inner arc-shaped rods 27 are installed on both sides of the front side of the edge connecting plate 12. An outer arc-shaped cylinder 26 is installed in the middle of the inner side of the shaped plate 5, and the inner arc-shaped rod 27 is partially inserted into the inner side of the outer arc-shaped cylinder 26. Parts are in contact with the outside of the outer arc-shaped barrel 26 .

In this embodiment, the S-shaped elastic clip assembly includes an S-shaped elastic clip 6 and a fixing hole, the bottom of the bumper body 1 is installed with the S-shaped elastic clips 6 at equal intervals, and the ends of the S-shaped elastic clips 6 are opened There is a second fixing hole.

In this embodiment, the bumper structure further includes the following buffering methods:

Step 1: fix the side connecting plate 12 on the side of the frame by passing the screw through the first fixing hole, and fix it at the bottom end of the frame by passing the screw through the second fixing hole;

Step 2: When the bumper is hit, the license plate card 2 is compressed to adjust the first inner sliding cylinder 16 to slide in the second outer sliding cylinder 17;

Step 3: Adjust and compress the first inner limit spring 20 through the first inner sliding cylinder 16 so that the hydraulic oil 22 in the second outer sliding cylinder 17 is pressed into the hydraulic oil diversion chamber 11, and makes it enter to the limit. The inner lift plate 4 is jacked up in the position plate 10;

Step 4: When the first inner sliding cylinder 16 is compressed, the air in the rubber buffer cover 3 is further compressed, so that the air enters the outer adjustment cylinder 9 through the air duct 23, and adjusts the buffer adjustment plate 8 to extend outward and The collision of the impactor further constitutes a buffer;

Step 5: After the hydraulic oil 22 enters the limit plate 10 and the hydraulic oil diversion chamber 11, a set of protective walls are formed on the top of the inner lift plate 4 to further protect the engine and other accessories;

Step 6: When the bumper body 1 is impacted, synchronously cooperate with the S-shaped elastic clip 6 to form a buffer protection at the bottom;

Step 7: When the side arc-shaped plate 5 is hit, adjust the adjustment slider 15 to perform sliding adjustment on the inner side of the arc-shaped sliding rail 14, and then compress the side hinge elastic plate 13 through the adjustment slider 15 to adjust the outer adjustment spring 25, inner The arc rod 27 and the outer arc cylinder 26 constitute a side buffer;

Step 8: When the side arc plate 5 is hit, the second inner sliding cylinder 18 is simultaneously compressed to adjust and compress the second inner limit spring 24 to cooperate with the side arc plate 5 to buffer and protect the structure of the side arc plate 5 .

The above are only further embodiments of the present invention, but the protection scope of the present invention is not limited to this. Equivalent replacements or changes all belong to the protection scope of the present invention.

Claims (10)

1. A bumper structure combined by a negative Poisson ratio sandwich beam structure and an energy absorption block is characterized in that: comprises a bumper body (1), first buffer cylinder assemblies are arranged on the front face of the bumper body (1) at equal intervals, a license plate clamping plate (2) is arranged at the outer end part of the first buffer cylinder assembly, a rubber buffer cover (3) is connected at the outer side edge part of the license plate clamping plate (2), the outer end part of the rubber buffer cover (3) is connected with the front face of the bumper body (1) and a sealing space is formed by the bumper body (1), the license plate clamping plate (2) and the rubber buffer cover (3), a passive buffer cylinder assembly is arranged at the bottom of the bumper body (1) and is communicated with the inside of the rubber buffer cover (3) through an air duct (23), a jacking cylinder assembly communicated with the first buffer cylinder assembly is arranged at the top part of the inner side of the bumper body (1), side arc plates (5) are integrally formed at two sides of the bumper body (1), the arc-shaped steel bar framework assembly is installed at the top and the bottom of the inner side of the side arc-shaped plate (5), the inner side of the arc-shaped steel bar framework assembly is provided with a linkage hinged sliding plate assembly capable of sliding in the inner side of the arc-shaped steel bar framework assembly, the end portion of the linkage hinged sliding plate assembly is hinged to a fixed plate assembly, a second buffer cylinder assembly is installed in the front of the fixed plate assembly, an arc-shaped buffer rod assembly is arranged between the fixed plate assembly and the linkage hinged sliding plate assembly, and S-shaped elastic clamping piece assemblies are installed at equal intervals at the bottom of the bumper body (1).

2. The bumper structure of claim 1, wherein the bumper structure is a combination of a negative poisson's ratio sandwich beam structure and an energy absorbing block, and wherein: first buffer cylinder subassembly includes the outer slide cartridge of second (17), first interior spacing spring (20), first interior slide cartridge (16), hydraulic oil (22) and leads oil pipe (21), the outer slide cartridge of second (17) is installed to the outside top department of bumper body (1) equidistant, the end department installs first interior spacing spring (20) in the interior of the outer slide cartridge of second (17), first interior slide cartridge (16) is installed to the other end of first interior spacing spring (20), the inside of the outer slide cartridge of second (17) embeds there is hydraulic oil (22), the bottom intercommunication of the outer slide cartridge of second (17) has leads oil pipe (21), license plate cardboard (2) are installed to the outer tip department of first interior slide cartridge (16).

3. The bumper structure of claim 2, wherein the bumper structure is a combination of a negative poisson's ratio sandwich beam structure and an energy absorbing block, and wherein: passive buffer cylinder subassembly includes an outer adjusting cylinder (9) and buffering adjusting plate (8), the positive bottom department of bumper body (1) installs an outer adjusting cylinder (9), just the inside of an outer adjusting cylinder (9) is built-in to have can outer adjusting cylinder (9) inside gliding buffering adjusting plate (8), outer adjusting cylinder (9) are through air duct (23) and rubber buffering cover (3) intercommunication.

4. The bumper structure of claim 3, wherein the bumper structure is a combination of a negative poisson's ratio sandwich beam structure and an energy absorbing block, and wherein: jacking falls a subassembly and includes hydraulic oil water conservancy diversion storehouse (11), limiting plate (10) and interior lifter plate (4), the back top department of bumper body (1) installs hydraulic oil water conservancy diversion storehouse (11), just hydraulic oil water conservancy diversion storehouse (11) with lead oil pipe (21) intercommunication, limiting plate (10) are installed at the top in hydraulic oil water conservancy diversion storehouse (11), just hydraulic oil water conservancy diversion storehouse (11) with limiting plate (10) intercommunication, lifter plate (4) in having inserted at the interior top of limiting plate (10), just interior lifter plate (4) part runs through limiting plate (10).

5. The bumper structure of claim 4, wherein the bumper structure is a combination of a negative poisson's ratio sandwich beam structure and an energy absorbing block, and wherein: arc framework of steel reinforcement subassembly includes arc slide rail (14) and interior arc pole, arc slide rail (14) are installed to an inboard top bottom department of side arc (5), the inboard edge of arc slide rail (14) is horizontal installs interior arc pole, and the outside cover of arc pole is equipped with the articulated sliding plate subassembly of linkage in this.

6. The bumper structure of claim 5, wherein the bumper structure is a combination of a negative poisson's ratio sandwich beam structure and an energy absorbing block, and wherein: the linkage hinged sliding plate component comprises a side hinged elastic plate (13), an adjusting sliding block (15) and a linkage hinged rod, the adjusting sliding block (15) is sleeved on the outer side of the inner arc-shaped rod, the outer side of the adjusting sliding block (15) is hinged to the side hinged elastic plate (13) through the linkage hinged rod, and the end of the side hinged elastic plate (13) is hinged to the fixed plate component through a spring.

7. The bumper structure of claim 6, wherein the bumper structure is a combination of a negative poisson's ratio sandwich beam structure and an energy absorbing block, and wherein: the fixed plate component comprises an edge connecting plate (12) and a fixed hole, the end part of the side hinged elastic plate (13) is hinged to the edge connecting plate (12) through a clockwork spring, and first fixed holes are formed in four corners of the edge connecting plate (12).

8. The bumper structure of claim 7, wherein the bumper structure is a combination of a negative poisson's ratio sandwich beam structure and an energy absorbing block, and wherein: the second buffer cylinder assembly comprises a second outer sliding cylinder (19), a second inner sliding cylinder (18) and a second inner limiting spring (24), the second outer sliding cylinder (19) is installed in the middle of the front face of the edge connecting plate (12), the second inner limiting spring (24) is installed at the inner end of the second outer sliding cylinder (19), the second inner sliding cylinder (18) is installed at the other end of the second inner limiting spring (24), and the second inner sliding cylinder (18) and the side arc-shaped plate (5) are matched with each other.

9. The bumper structure formed by combining the negative poisson's ratio sandwich beam structure and the energy absorption block according to claim 8, wherein: the arc-shaped buffer rod assembly comprises inner arc-shaped rods (27), outer adjusting springs (25) and outer arc-shaped cylinders (26), the inner arc-shaped rods (27) are mounted at two sides of the front side of the side portion connecting plate (12), the outer arc-shaped cylinders (26) are mounted in the middle of the inner sides of the side arc-shaped plates (5), the inner arc-shaped rods (27) are partially inserted into the inner sides of the outer arc-shaped cylinders (26), the outer adjusting springs (25) are sleeved on the outer sides of the inner arc-shaped rods (27), and the outer adjusting springs (25) are partially contacted with the outer sides of the outer arc-shaped cylinders (26); the S-shaped elastic clamping piece assembly comprises S-shaped elastic clamping pieces (6) and fixing holes, the S-shaped elastic clamping pieces (6) are installed at equal intervals at the bottom of the bumper body (1), and second fixing holes are formed in the end portions of the S-shaped elastic clamping pieces (6).

10. The bumper structure of claim 9, wherein the bumper structure is a combination of a negative poisson's ratio sandwich beam structure and an energy absorbing block, and wherein: the bumper structure further comprises the following buffering method:

the method comprises the following steps: the edge connecting plate (12) is fixed on the side part of the frame by penetrating through the first fixing hole through a screw rod, and is fixed at the bottom end part of the frame by penetrating through the second fixing hole through the screw rod;

step two: when the bumper is impacted, the license plate clamping plate (2) is compressed to adjust the first inner sliding cylinder (16) to slide in the second outer sliding cylinder (17);

step three: the first inner limiting spring (20) is regulated and compressed through the first inner sliding cylinder (16), so that hydraulic oil (22) in the second outer sliding cylinder (17) is pressed into the hydraulic oil diversion bin (11) and enters the limiting plate (10) to jack up the inner lifting plate (4);

step four: when the first inner sliding cylinder (16) is compressed, air in the rubber buffer cover (3) is further compressed, so that the air enters the outer adjusting cylinder (9) through the air duct (23), and the buffer adjusting plate (8) is adjusted to extend outwards to collide with an impacting object to further form buffer;

step five: after the hydraulic oil (22) enters the limiting plate (10) and the hydraulic oil diversion bin (11), a group of protection walls are formed at the top of the inner lifting plate (4) to further protect accessories such as an engine;

step six: when the bumper body (1) is impacted, the S-shaped elastic clamping piece (6) is synchronously matched to form buffer protection at the bottom;

step seven: when the side arc-shaped plate (5) is impacted, the adjusting slide block (15) is adjusted to slide on the inner side of the arc-shaped slide rail (14), and then the adjusting slide block (15) compresses the side hinged elastic plate (13) to adjust the outer adjusting spring (25), the inner arc-shaped rod (27) and the outer arc-shaped cylinder (26) to form side buffering;

step eight: when the side arc-shaped plate (5) is impacted, the second inner sliding cylinder (18) is compressed at the same time, the second inner limiting spring (24) is adjusted and compressed to match with the buffer of the side arc-shaped plate (5) to protect the structure of the side arc-shaped plate (5).

Images