CN212200860U - Antiknock energy-absorbing protective structure - Google Patents
Antiknock energy-absorbing protective structure Download PDFInfo
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- CN212200860U CN212200860U CN202020484632.0U CN202020484632U CN212200860U CN 212200860 U CN212200860 U CN 212200860U CN 202020484632 U CN202020484632 U CN 202020484632U CN 212200860 U CN212200860 U CN 212200860U
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Abstract
The utility model provides an antiknock energy-absorbing protective structure relates to antiknock protection field. The anti-explosion energy-absorbing protection structure comprises a first panel, a second panel and a plurality of supporting tubes which are arranged in a layered mode at intervals, the supporting tubes are arranged in the intervals between the first panel and the second panel in parallel, the length direction of each supporting tube extends parallel to the panel surface of one of the panels, a foam plastic filling body is clamped between the first panel and the second panel, the foam plastic filling body is located outside the supporting tubes, and the foam plastic filling body is tightly attached to the outer tube wall of each supporting tube. The foam plastic filler and the supporting tube jointly form a core layer structure, and the supporting tube is used as a core layer framework and plays a role in reliable supporting; the foam plastic filling body is used as a core layer buffering filling material, the effect of effectively absorbing explosion impact energy is achieved by utilizing the elastic-plastic characteristic of the foam plastic filling body, when the foam plastic filling body is applied to a building structure, the effective buffering effect can be achieved on the transmission of the explosion energy, and the actual anti-explosion protection effect is better.
Description
Technical Field
The utility model relates to an antiknock protection technical field especially relates to an antiknock energy-absorbing protective structure.
Background
In the industrial industry, safety accidents occur during production, and particularly, fire accidents and explosion accidents are easy to develop into serious disasters. For the construction engineering, the bearing capacity and the anti-explosion performance of the building structure in the explosion accident are improved, and the method becomes an effective means for restraining the further expansion of the disaster.
If the Chinese patent with the publication number of CN106863948B and the publication date of 2019.01.15 discloses a tubular composite structure core sandwich panel and a preparation method thereof, the tubular composite structure core sandwich panel comprises an upper panel, a second layer of straight tube components, an inclined tube, a first layer of straight tube components and a lower panel from top to bottom, the second layer of straight tube components and the first layer of straight tube components are respectively formed by laying a plurality of straight tubes, the straight tubes of the second layer of straight tube components are arranged along the vertical direction, the straight tubes of the first layer of straight tube components are arranged along the horizontal direction, and the inclined tube is arranged between the second layer of straight tube components and the first layer of straight tube components to form a tubular composite structure core. An anti-explosion energy-absorbing structure core body is assembled by an orthogonal trapezoid straight pipe and parallelogram inclined pipes inserted in gaps of the orthogonal trapezoid straight pipe, and four inclined pipes in the core body form a pyramid hollow pipe lattice structure which is mutually supported, so that the anti-explosion energy-absorbing structure has excellent out-of-plane compression performance; when the sandwich structure is acted by an out-of-plane explosive load, the orthogonal trapezoid straight pipe in the core body provides stable in-plane shear resistance, and the anti-explosion and anti-impact performance of the whole structure can be effectively improved.
The core sandwich plate in the prior art adopts a pyramid hollow tube lattice structure, and the structure strength of the core in the core sandwich plate is high, but the elastic deformation capability is poor. Therefore, the explosion energy transmission cannot be effectively buffered, and the actual protection effect on the building structure is poor.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, an object of the utility model is to provide an antiknock energy-absorbing protective structure to solve current protective structure and can't play effectual cushioning effect to the transmission of explosion energy, to the poor problem of building structure's actual protecting effect.
The utility model discloses an antiknock energy-absorbing protective structure's technical scheme does:
the anti-explosion energy-absorbing protection structure comprises a first panel, a second panel and a plurality of supporting tubes which are arranged in a layered mode at intervals, wherein the supporting tubes are arranged in the intervals between the first panel and the second panel in parallel, the length direction of each supporting tube extends in parallel to the panel surface of one panel, a foamed plastic filling body is clamped between the first panel and the second panel and located outside the supporting tubes, and the foamed plastic filling body is tightly attached to the outer tube wall of each supporting tube.
Has the advantages that: the first panel and the second panel are arranged in parallel with a supporting tube and a foamed plastic filler which is tightly attached to the outer tube wall of the supporting tube, the foamed plastic filler and the supporting tube form a core layer structure together, and the supporting tube is used as a core layer framework and plays a role in reliably supporting the first panel and the second panel; the foam plastic filling body is used as a core layer buffering filling material, the effect of effectively absorbing explosion impact energy is achieved by utilizing the elastic-plastic characteristic of the foam plastic filling body, when the anti-explosion energy-absorbing protection structure is applied to a building structure, the effective buffering effect can be achieved on the transmission of the explosion energy, and the actual anti-explosion protection effect is better.
Furthermore, the foam plastic filling body is made of polymethacrylimide foam material.
Furthermore, the first panel and the second panel are arranged in parallel at intervals, the supporting pipes are supporting circular pipes with the same outer diameter, and the outer pipe walls of the supporting circular pipes are respectively connected with the first panel and the second panel.
Further, the thickness of the supporting circular tube is smaller than one tenth of the outer diameter of the supporting circular tube.
Further, the face of first panel and second panel is the level and arranges, and is a plurality of it arranges along horizontal longitudinal extension respectively to support the pipe, and is a plurality of it sets up to support the pipe to be horizontal equidistance interval.
Furthermore, the transverse distance between the adjacent supporting circular pipes is larger than twice of the outer diameter of the supporting circular pipe.
Furthermore, the external diameter of the supporting circular tube is any value between 20mm and 50mm, the thickness of the supporting circular tube is any value between 1mm and 5mm, and the transverse distance between the adjacent supporting circular tubes is any value between 40mm and 100 mm.
Furthermore, first panel, second panel and support the pipe and all adopt low carbon steel material to make, support the pipe respectively with the welded connection of first panel, second panel.
Drawings
Fig. 1 is a schematic cross-sectional view of an anti-knock energy-absorbing protective structure according to embodiment 1 of the present invention;
fig. 2 is a schematic diagram of the test of the explosive impact of the test beam in embodiment 1 of the anti-knock energy-absorbing protective structure of the present invention.
In the figure: 1-first panel, 2-second panel, 3-support round tube, 4-foam plastic filling body, 5-test beam, 6-cable, A0-initial rest position, A1First extreme oscillation position, A2-a second oscillation limit position, 7-TNT explosive.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
The utility model discloses a concrete embodiment 1 of antiknock energy-absorbing protective structure, as shown in fig. 1, fig. 2, antiknock energy-absorbing protective structure includes first panel 1, second panel 2 and a plurality of stay tube of stratiform interval arrangement, and a plurality of stay tubes are arranged side by side in the interval between first panel 1 and second panel 2, and the length direction of stay tube is on a parallel with the face extension of one of them panel. In this embodiment, first panel 1 and the parallel interval arrangement of second panel 2, the interval distance between first panel 1 and the second panel 2 is equal everywhere promptly, and a plurality of stay tubes 3 are the same support pipe 3 of external diameter size, and the outline of support pipe 3 is the face of cylinder, and the length direction of a plurality of support pipe 3 extends parallel to the face of first panel 1, and the outer pipe wall of support pipe 3 is connected with first panel 1 and second panel 2 respectively.
Still press from both sides between first panel 1 and second panel 2 and be equipped with foamed plastic obturator 4, foamed plastic obturator 4 is located the outside of supporting pipe 3, and foamed plastic obturator 4 and the outer pipe wall of supporting pipe 3 closely laminate the setting. Specifically, the foamed plastic obturator 3 adopts polymethacrylimide foam material to make, polymethacrylimide's english is referred to as "PMI" for short, the PMI foam material is the rigid foam of light obturator, it is high to have intensity, the characteristics that elastoplasticity deformability is strong and corrosion resistance is good, with supporting pipe 3 and having formed the sandwich layer structure jointly, support pipe 3 as the sandwich layer skeleton, the effect of reliably supporting first panel 1 and second panel 2 has been played, foamed plastic obturator 4 is as sandwich layer buffering filler, utilize its elastoplasty characteristic to play the effect of absorbing explosion impact energy effectively, antiknock energy-absorbing protective structure when using on building structure, actual antiknock protective effect is better.
In this embodiment, the face of first panel 1 and second panel 2 is the level and arranges, and a plurality of support pipe 3 are arranged along horizontal longitudinal extension respectively, and a plurality of support pipe 3 set up along the horizontal equidistance interval of level, and the equidistance interval sets up support pipe 3 between first panel 1 and second panel 2, has guaranteed that support pipe 3 can play balanced supporting role as the sandwich skeleton, makes antiknock energy-absorbing protective structure cushion and absorb the explosion impact more evenly. The thickness of the supporting circular tubes 3 is less than one tenth of the outer diameter of the supporting circular tubes 3, and the transverse distance between adjacent supporting circular tubes 3 is greater than twice the outer diameter of the supporting circular tubes 3.
Specifically, the outer diameter of the supporting circular tubes 3 is 35.8mm, the thickness of the tube wall is 1.2mm, the transverse distance between adjacent supporting circular tubes 3 is 65mm, and the first panel 1 and the second panel 2 are both thin flat plates with the thickness of 2.9 mm. It should be noted that the transverse distance between the adjacent supporting circular tubes 3 is the transverse distance between the central axes of the two adjacent supporting circular tubes 3, that is, the minimum transverse distance between the outer tube walls of the two adjacent supporting circular tubes 3 is 29.2mm, so that the reasonable arrangement density of the supporting circular tubes 3 and the foam plastic filler 4 in the core layer structure is ensured, and the core layer structure has both the supporting performance and the buffering energy-absorbing effect.
In addition, the first panel 1, the second panel 2 and the support pipe 3 are made of low carbon steel material, the low carbon steel material has higher structural strength, and the density of the low carbon steel material is 7800kg/m3The elastic modulus is 200GPa, the yield stress is 338MPa, and the tangent modulus is 820MPa, and the support circular tube 3 is respectively connected with the first panel 1 and the second panel 2 in a welding manner, so that the welding connection is firmer and the stability is good. The actual manufacturing process comprises the following steps: firstly, polishing and cleaning the surfaces of the first panel 1, the second panel 2 and the supporting circular tube 3 to remove impurities such as rust, oil stains and the like on the outer surfaces, and then cleaning the surfaces again by using an acetone solution; after the surface is completely dried, welding the contact parts of the supporting circular tubes 3 with the first panel 1 and the second panel 2, and enabling the plurality of supporting circular tubes 3 to be transversely arranged between the first panel 1 and the second panel 2 at equal intervals; and cutting the foam plastic filling bodies 4 according to the shape and size of gaps between the adjacent supporting circular tubes 3, and finally, filling the cut foam plastic filling bodies 4 into the gaps between the adjacent supporting circular tubes 3 one by one, thereby completing the manufacturing process of the anti-explosion energy-absorbing protective structure.
In order to ensure that the anti-knock energy-absorbing protective structure meets the design requirements, the anti-knock energy-absorbing protective structure is used for absorbing energyAnd the protective structure is processed into a test piece 5 in a beam body shape to carry out an explosion impact test, and a four-cable impact pendulum system is utilized to test the performance of the anti-explosion energy-absorbing protective structure under the TNT explosion impact action. As shown in fig. 2, a bolt is provided at an end of the test piece 5, the test piece 5 is suspended by the bolt from the lower ends of the four cables 6, and the test piece 5 is held at the initial rest position a by gravity at rest0Then, a cylindrical TNT explosive 7 was set 500mm outside the test piece 5, and a detonator was preset in the TNT explosive 7. After the TNT explosive 7 is detonated, the test piece 5 oscillates and swings under the action of explosive impact.
In the oscillating and swinging process, the position of the test piece 5 swinging to the leftmost side is a first swinging limit position A1The position swinging to the rightmost side is a second swinging limit position A2And collecting and recording the oscillation and swing data of the test piece 5. The oscillation amplitude of the test piece 5 is positively correlated with the explosion impact energy, and under the action of equivalent explosion impact, the larger the oscillation amplitude of the test piece 5 is, the weaker the anti-explosion and energy-absorbing characteristics of the test piece 5 are, otherwise, the stronger the anti-explosion and energy-absorbing performance is. The test can show that the test piece 5 of the anti-explosion energy-absorbing protective structure has smaller oscillation swing amplitude than the test pieces of other protective structures under the action of equivalent explosion impact, so that the anti-explosion energy-absorbing protective structure has better anti-explosion energy-absorbing characteristics.
The utility model discloses an other embodiments of antiknock energy-absorbing protective structure, in order to adapt to different user demands, the stay tube can not only be limited to the support pipe in embodiment 1, still can adopt support side's pipe, support the side's of going up and first panel welded connection, support the downside and the second panel welded connection of side's pipe, the foamed plastic obturator of packing into between adjacent support side's pipe, can make sandwich layer structure compromise support performance and buffering energy-absorbing effect equally. In other embodiments, the supporting circular tube can be replaced by a triangular tube, a hexagonal tube, an elliptical tube and other supporting tubes.
The utility model discloses an other embodiments of antiknock energy-absorbing protective structure, in order to adapt to different user demands, the foamed plastic obturator can not only be limited to the polymethacrylimide foam material who adopts among embodiment 1, still can replace foam materials such as polystyrene, polyvinyl chloride, polyurethane with polymethacrylimide foam material, can play the effect of absorbing explosion impact energy effectively equally.
In order to adapt to different use requirements, the thicknesses of the first panel and the second panel can be designed into any value between 1mm and 10mm, so as to meet the design requirements; in addition, the size and the transverse spacing of the supporting circular tubes can be adjusted, the outer diameter of each supporting circular tube is any value between 20mm and 50mm, the thickness of each supporting circular tube is any value between 1mm and 5mm, and the transverse spacing between the adjacent supporting circular tubes is any value between 40mm and 100 mm. For example: the outer diameter of each supporting circular tube is 20mm, the thickness of each supporting circular tube is 1mm, and the transverse distance between every two adjacent supporting circular tubes is 40 mm; or the outer diameter of the supporting circular tubes is 50mm, the thickness of the tube wall is 5mm, and the transverse distance between every two adjacent supporting circular tubes is 100 mm.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (8)
1. An anti-explosion energy-absorbing protection structure is characterized by comprising a first panel, a second panel and a plurality of supporting tubes which are arranged in a layered mode at intervals, wherein the supporting tubes are arranged in the intervals between the first panel and the second panel in parallel, the length direction of each supporting tube extends parallel to the panel surface of one panel, a foamed plastic filling body is clamped between the first panel and the second panel and located outside the supporting tubes, and the foamed plastic filling body is tightly attached to the outer tube wall of each supporting tube.
2. The blast-resistant energy-absorbing protective structure according to claim 1, wherein said foam plastic filler is made of polymethacrylimide foam.
3. The antiknock energy-absorbing protective structure according to claim 2, wherein the first panel and the second panel are arranged in parallel at intervals, the support tubes are support round tubes with the same outer diameter, and the outer tube walls of the support round tubes are respectively connected with the first panel and the second panel.
4. The antiknock energy-absorbing protective structure according to claim 3, wherein the thickness dimension of the wall of the round support tube is less than one tenth of the outer diameter dimension of the round support tube.
5. The antiknock energy-absorbing protective structure according to claim 4, wherein the first and second panels are horizontally disposed, and a plurality of said circular support tubes are horizontally and longitudinally extended and disposed at equal intervals.
6. The antiknock energy-absorbing protective structure according to claim 5, wherein the lateral spacing between adjacent support tubes is greater than twice the outer diameter of the support tubes.
7. The antiknock energy-absorbing protective structure according to claim 6, wherein the outer diameter of the round supporting tubes is between 20mm and 50mm, the thickness of the round supporting tubes is between 1mm and 5mm, and the transverse distance between adjacent round supporting tubes is between 40mm and 100 mm.
8. The antiknock energy-absorbing protective structure according to claim 3, wherein the first panel, the second panel and the support tube are made of low carbon steel, and the support tube is welded to the first panel and the second panel respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020484632.0U CN212200860U (en) | 2020-04-03 | 2020-04-03 | Antiknock energy-absorbing protective structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020484632.0U CN212200860U (en) | 2020-04-03 | 2020-04-03 | Antiknock energy-absorbing protective structure |
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| CN212200860U true CN212200860U (en) | 2020-12-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112832623A (en) * | 2021-02-19 | 2021-05-25 | 山西聚脲防护材料有限公司 | Frame strip of anti-explosion door or anti-explosion window |
| CN115782803A (en) * | 2022-12-29 | 2023-03-14 | 湖南科技大学 | Military vehicle passenger lower limb bionic protection device and military vehicle |
-
2020
- 2020-04-03 CN CN202020484632.0U patent/CN212200860U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112832623A (en) * | 2021-02-19 | 2021-05-25 | 山西聚脲防护材料有限公司 | Frame strip of anti-explosion door or anti-explosion window |
| CN115782803A (en) * | 2022-12-29 | 2023-03-14 | 湖南科技大学 | Military vehicle passenger lower limb bionic protection device and military vehicle |
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