CN113915289B - Detachable chain type stretching energy absorbing device - Google Patents
Detachable chain type stretching energy absorbing device Download PDFInfo
- Publication number
- CN113915289B CN113915289B CN202111114582.2A CN202111114582A CN113915289B CN 113915289 B CN113915289 B CN 113915289B CN 202111114582 A CN202111114582 A CN 202111114582A CN 113915289 B CN113915289 B CN 113915289B
- Authority
- CN
- China
- Prior art keywords
- detachable
- single chain
- chain
- energy
- detachable single
- 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
- 238000010521 absorption reaction Methods 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000002131 composite material Substances 0.000 claims abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 239000006096 absorbing agent Substances 0.000 claims description 7
- 239000006260 foam Substances 0.000 claims description 7
- 239000011358 absorbing material Substances 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000009763 wire-cut EDM Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 9
- 238000003754 machining Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
- F16B21/10—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts
- F16B21/12—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with locking-pins or split-pins thrust into holes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Abstract
The invention discloses a detachable chain type stretching energy absorbing device which mainly comprises a detachable single chain, a non-detachable single chain and an energy absorbing core. The detachable single chain is a composite structure consisting of two mortise structure half chains, two butterfly-like tenons and four bolts; the non-detachable single chain is a single structure similar to the shape of the detachable single chain; the energy absorption core is an energy absorption structure formed by energy absorption materials. The invention adopts a detachable design, solves the problem that the traditional stretching energy absorbing device can only be used once, is convenient to maintain, saves economic cost, and can improve the energy absorbing capacity of the internal filling material.
Description
Technical Field
The invention relates to the technical field of energy absorbing devices, in particular to a detachable chain type energy absorbing device which can be applied to an energy absorbing scene bearing a tensile load. The device is suitable for a stretching energy absorbing system in the fields of aerospace vehicles, vehicle engineering and the like.
Background
When an airplane, a vehicle and the like are subjected to accidents such as collision and explosion, the structure of the airplane, the vehicle and the like can bear strong impact load, serious plastic deformation, even fracture and destruction can occur, normal working capacity is lost, living space inside the carrier is extruded, and casualties and property loss are caused. How to reduce and avoid serious life and property loss caused by a structure under impact load has become an important subject in the field of impact protection. The structures such as the metal thin-wall tube, the foam material filling tube, the honeycomb structure, the lattice structure and the like are widely applied in the field of impact protection, and impact energy is converted into plastic deformation energy through plastic deformation of the structures. However, these conventional structures are mainly effective in absorbing energy by bearing compressive load, and cannot be used in a scenario where tensile load is dominant.
The cabin cross beam of the large-scale conveyer and the connection of the cabin cross beam and the frame of the machine body are mainly subjected to tensile load in the process of falling collision of the machine body, the landing leg structure of the lunar probe is also provided with a part for bearing the tensile load in the landing process, the falling protection device also absorbs energy by bearing the tensile load, and the common compression energy absorbing device cannot meet the energy absorption requirements under the scenes, so that the development of a proper tensile energy absorbing device has research value.
The conventional tensile energy absorbing devices include an energy absorbing device based on a bolt tearing composite material, an energy absorbing device based on a chain structure, an energy absorbing device based on a woven material tensile breaking, and the like. However, these are all disposable energy absorbing devices, which are not reusable and have poor economic benefits. Therefore, the stretching energy absorbing device can be reused on the premise of ensuring the energy absorbing performance of the stretching energy absorbing device, and is a meaningful work.
Disclosure of Invention
The invention solves the technical problems: the detachable chain type stretching energy absorbing device overcomes the defects of the prior art, aims to solve the problem of disposable use of the traditional chain type energy absorbing device, and is convenient to manufacture while being reusable. The device can effectively convert energy into plastic deformation energy of the energy-absorbing core when bearing tensile load, and provides more various and economic choices for impact protection.
The technical scheme of the invention is as follows: a removable chain tensile energy absorbing device comprising: a detachable single chain, a non-detachable single chain and an energy-absorbing core; the detachable single chain and the non-detachable single chain are sleeved to form a basic unit of the chain structure, and the basic unit or the basic units are sleeved in turn to form a multi-unit chain structure, and the single chains do not need to be fixed and move mutually; the energy absorption core is an energy absorption structure formed by energy absorption materials and is placed in an inner cavity of the chain structure;
the detachable single chain is a composite structure consisting of two mortise structure half chains, two butterfly tenons and four bolts; the two mortise structure half chains and the two butterfly tenons are mutually mortise-tenon matched to form an integral single chain, and the relative positions of the two mortise structure half chains and the two butterfly tenons are further fixed by four bolts to form a detachable single chain; the components in the detachable single chain are connected in a free fit manner, and no fixed connection in any form is needed;
the non-detachable single chain is of a non-detachable structure similar to the appearance of the detachable single chain, namely the appearance of the non-detachable single chain and the assembled detachable single chain are sleeved to form a chain structure, but the non-detachable single chain is not provided with a mortise and tenon structure of the detachable single chain, so the non-detachable structure is formed.
The whole length of the detachable chain type stretching energy absorbing device and the tenon number of the butterfly tenons in the detachable single chain are all adjusted according to actual needs; the lengths of the detachable single chain and the non-detachable single chain are kept consistent; considering the balance of the strength and the quality of the chain structure, the wall thickness of each single chain in the chain structure is 5-6 mm, the whole single chain is a ring structure with uniform wall thickness, and the engineering diagram in the figure 3 is seen, and clamping handles which are convenient for clamping by an experiment machine are added at two ends in the schematic diagram; the diameters of the four bolts in the detachable single chain are all 2mm.
The manufacturing materials of the two mortise structure half chains, the two butterfly tenons and the four bolts in the non-detachable single chain and the detachable single chain are steel materials, and the two mortise structure half chains, the two butterfly tenons and the four bolts are manufactured through wire cut electrical discharge machining; the components in the detachable single chain are required to be tightly matched, so that the machining precision is high, the wire-cut electric discharge machine is suitable in precision, and the machining is convenient.
The energy absorption core is made of foam aluminum or lattice compression energy absorption materials, and in order to enable the energy absorption core to be smoothly placed in the inner cavity of the chain structure, the shape of the energy absorption core is similar to that of the inner cavity of the chain structure, and the size of the energy absorption core is slightly smaller than that of the inner cavity of the chain structure; the energy absorption core is not required to be connected with the detachable single chain or the non-detachable single chain, so that the characteristic of the detachable chain type stretching energy absorption device that the energy absorption core is convenient to detach is exerted.
The sectional shape of the detachable chain type stretching energy absorbing device is designed randomly, and the detachable chain type stretching energy absorbing device comprises a square shape, a hexagonal shape, an octagonal shape or a round shape, so that the requirements of different use scenes are met.
The principle of the invention is as follows: the chain structure is characterized in that two single chains are taken as a group, and one single chain is designed in a detachable way, so that the structure is convenient to manufacture and can be reused. The energy absorption core is made of energy absorption materials such as closed cell foam aluminum, lattice and the like. The chain structure can bear compressive load in a non-energy-absorbing working state, is beneficial to keeping the structural stability of the energy-absorbing core, and can be used for structural bearing. When the two ends of the chain structure are acted by tensile load, the two single chains can relatively displace, and the energy absorption core in the inner cavity of the chain structure is crushed to achieve the purpose of energy absorption. The structure and materials used for the energy-absorbing core may be selected based on the amount of impact energy. When the energy absorption core is compacted, the chain structure stops relative displacement, so that the deformation of the energy absorption device is limited.
Compared with the prior art, the invention has the beneficial effects that:
(1) The device can apply the traditional compression energy-absorbing material to the tensile energy-absorbing scene, and expands the application range of the traditional compression energy-absorbing material.
(2) Most of the existing stretching energy absorbing devices and compression energy absorbing devices are disposable energy absorbing devices and cannot be reused, and the conventional square-section chain type structure is detachably designed by adopting the mortise and tenon structure, so that the repeated use of the energy absorbing devices is realized, and the economic cost is reduced. The device can be repeatedly used, reduces the use cost, does not need one-step molding, and reduces the manufacturing difficulty.
(3) The invention can limit the deformation range of the internal energy-absorbing material and avoid the energy-absorbing material from buckling integrally, thereby improving the energy absorption capacity of the energy-absorbing material and providing safer guarantee for the structure and the safety protection of human bodies. The improvement of the energy absorbing capacity of the brittle material is more obvious because the device can limit the brittle material which is subjected to brittle fracture to a small space for further brittle fracture.
(4) The device of the invention is functionally labor-division cooperative. The outer chain structure plays a role in bearing and transmitting ballast under the non-energy-absorbing state, the structure is stable in shape and can be used as a non-energy-absorbing member, the inner energy-absorbing core only starts to work under the energy-absorbing state, and when the outer chain structure bears tensile load, the outer chain structure is compressed and absorbs energy.
(5) The device can meet different energy absorption requirements by changing the structure and the materials used by the energy absorption core, and has better adjustability. Taking a closed cell aluminum foam as an example, the amount of energy absorbed by the structure can be controlled by adjusting its density.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is an assembled view of a removable chain tensile energy absorbing device;
FIG. 3 is a diagram of a removable chain type tensile energy absorbing device, wherein (a) is a diagram of a half chain with a mortise and tenon structure No. 1, (b) is a diagram of a half chain with a mortise and tenon structure No. 2, (c) is a diagram of a butterfly tenon-like structure, (d) is a diagram of a bolt, and (e) is a diagram of a non-removable single chain;
FIG. 4 is an experimental analysis of the tensile load of a removable chain tensile energy absorber, wherein FIG. (a) is a drawing process of the removable chain tensile energy absorber, (b) is the final compressed form of the closed cell foam aluminum energy absorbing core, and (c) is the load-displacement curve of the removable chain tensile energy absorber;
the meaning of the reference numerals in the figures: 1 is a half chain with a mortise structure number 1, 2 is a half chain with a mortise structure number 2, 3 is a butterfly tenon, 4 is a bolt, 5 is a non-detachable single chain, and 6 is an energy absorption core.
Detailed Description
The invention is described in detail below with reference to the drawings and embodiments, which are described below by way of example with reference to the drawings, for the purpose of illustrating the removable chain energy absorbing device proposed in the present invention and not to be construed as limiting the invention.
As shown in fig. 1 and 2, the detachable chain type stretching energy absorbing device is composed of three parts, namely a detachable single chain, an undetachable single chain 5 and an energy absorbing core 6, wherein the detachable single chain and the undetachable single chain are sequentially sleeved to form a chain type structure, the single chains are not required to be fixed, can mutually move, and the energy absorbing core is placed in an inner cavity of the chain type structure.
As shown in fig. 2, the detachable single chain is a composite structure consisting of two mortise structure half chains, namely, a mortise structure half chain 1 and a mortise structure half chain 2 1, two butterfly-like tenons 3 and four bolts 4. The two mortise structure half chains and the two butterfly tenons are matched and connected into a whole, and the relative positions of the two mortise structure half chains and the two butterfly tenons are further fixed by four bolts to form a detachable single chain. The components in the detachable single chain are connected in a free fit manner, and no fixed connection in any form is needed. The non-detachable single chain is a non-detachable structure similar to the shape of the detachable single chain, namely the shape of the non-detachable single chain can be sleeved with the assembled detachable single chain to form a chain structure, but the non-detachable single chain is not provided with a mortise-tenon structure, so that the non-detachable structure is a non-detachable structure. The energy absorption core is an energy absorption structure formed by energy absorption materials.
The length of each half chain of the mortise structure in the detachable single chain shown in fig. 3 (a) and (b) is 62.5mm, and the wall thickness is 5mm, wherein the half chain of the mortise structure No. 2 shown in fig. 3 (b) is further designed with a clamping handle with the length of 75mm, so that the clamping of the tensile testing machine is facilitated. The shape and size of the butterfly-like tenon structure shown in (c) of fig. 3 are consistent with those of mortises formed by mutually matching half chains of two mortise structures, the number of tenons is 6, and the thickness is 5mm. The diameter of the plug pin as shown in (d) of fig. 3 is 2mm. As shown in FIG. 3 (e), the length of the non-detachable single strand was 125mm, the wall thickness was 5mm, and a grip holder having a length of 75mm was also designed.
The non-detachable single chain and the detachable single chain are formed by machining stainless steel materials through wire-cut electric discharge machining, and the energy-absorbing core is formed by machining closed-cell foamed aluminum into corresponding shapes through wire-cut electric discharge machining. The assembly mode of the detachable chain type stretching energy absorbing device of this embodiment is shown in fig. 3, the energy absorbing core is firstly filled into the half chain of the mortise structure No. 1, then the two half chains are put into the non-detachable single chain as a whole, the half chain of the mortise structure No. 2 and the half chain of the mortise structure No. 1 are aligned according to arrow (a) in fig. 3, so that the two half chains form a complete mortise, the two butterfly-like tenons are inserted into the mortises according to arrow (b) in fig. 3, and finally four bolts are inserted into bolt holes according to arrow (c) in fig. 3. The complete detachable chain type stretching energy absorbing device can be assembled according to the steps. After the detachable chain type stretching energy absorbing device is used, the detachable chain type stretching energy absorbing device can be detached according to the reverse steps of the steps, and the failed energy absorbing core can be replaced by a new energy absorbing core.
The energy absorption characteristics of the embodiments of the present invention are described below based on specific quasi-static tensile test results. The tensile speed of the experiment is 13.08mm/min, and the density of the closed-cell aluminum foam of the energy absorption core is 0.259g/cm respectively 3 ，0.324g/cm 3 And 0.441g/cm 3 . As shown in fig. 4 (a), the non-detachable single-stranded grip lever of the embodiment of the present invention was clamped to the fixed end of the testing machine, and the detachable single-stranded grip lever was clamped to the movable end of the testing machine. When the device is subjected to a tensile load, the detachable single strand moves upward, starting to compress the filled closed cell aluminum foam, which is uniformly crushed to absorb energy generated during the stretching process, and the final crushing result is shown in fig. 4 (b). From the load-displacement curve shown in fig. 4 (c), there is no large initial peak load, the plateau section of the load is obvious, and the effective energy absorption distance is long, which indicates that the device has good energy absorption performance. If the detachable chain type stretching energy absorbing device is not used, the energy absorbing core is directly compressed, and the energy absorbing core can be integrally buckled or even broken, so that the energy absorbing performance is poor. The detachable chain type stretching energy absorbing device can restrict the deformation of the energy absorbing core in the detachable chain type stretching energy absorbing device, and prevent the deformation mode of integral buckling, so that the energy absorbing performance of the energy absorbing core can be improved.
In a word, the detachable chain type stretching energy absorbing device solves the problems that the traditional chain type stretching energy absorbing device is high in manufacturing cost and can only be used once, and the chain type stretching energy absorbing device can be reused.
The above examples are provided for the purpose of describing the invention and are not intended to limit the scope of the invention. The scope of the invention is defined by the appended claims. Various equivalents and modifications that do not depart from the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (5)
1. A removable chain extension energy absorbing device comprising: a detachable single chain, a non-detachable single chain and an energy-absorbing core; the detachable single chain and the non-detachable single chain are sleeved to form a basic unit of the chain structure, and the basic unit or the basic units are sleeved in turn to form a multi-unit chain structure, and the single chains do not need to be fixed and move mutually; the energy absorption core is an energy absorption structure formed by energy absorption materials and is placed in an inner cavity of the chain structure;
the detachable single chain is a composite structure consisting of two mortise structure half chains, two butterfly tenons and four bolts; the two mortise structure half chains and the two butterfly tenons are mutually mortise-tenon matched to form an integral single chain, and the relative positions of the two mortise structure half chains and the two butterfly tenons are further fixed by four bolts to form a detachable single chain; the components in the detachable single chain are connected in a free fit manner, and no fixed connection in any form is needed;
the non-detachable single chain is of a non-detachable structure similar to the appearance of the detachable single chain, namely the appearance of the non-detachable single chain and the assembled detachable single chain are sleeved to form a chain structure, but the non-detachable single chain is not provided with a mortise-tenon structure of the detachable single chain, so that the non-detachable structure is formed;
the energy-absorbing core is made of foam aluminum or lattice compression energy-absorbing materials, and in order to enable the energy-absorbing core to be smoothly placed in the inner cavity of the chain structure, the shape of the energy-absorbing core is similar to that of the inner cavity of the chain structure, and the size of the energy-absorbing core is smaller than that of the inner cavity of the chain structure; the energy absorption core is not required to be connected with the detachable single chain or the non-detachable single chain, so that the characteristic of the detachable chain type stretching energy absorption device that the energy absorption core is convenient to detach is exerted.
2. The removable chained stretch energy absorber according to claim 1, wherein: the whole length of the detachable chain type stretching energy absorbing device and the tenon number of the butterfly tenons in the detachable single chain are all adjusted according to actual needs; the lengths of the detachable single chain and the non-detachable single chain are kept consistent; considering the balance of the strength and the quality of the chain structure, the wall thickness of each single chain in the chain structure is 5 mm-6 mm, and the whole single chain is a ring structure with uniform wall thickness.
3. The removable chained stretch energy absorber according to claim 1, wherein: the diameters of the four bolts in the detachable single chain are all 2mm.
4. The removable chained stretch energy absorber according to claim 1, wherein: the manufacturing materials of the two mortise structure half chains, the two butterfly tenons and the four bolts in the non-detachable single chain and the detachable single chain are steel materials, and the two mortise structure half chains, the two butterfly tenons and the four bolts are manufactured through wire cut electrical discharge machining.
5. A removable chained stretch energy absorber according to claim 1, wherein: the sectional shape of the detachable chain type stretching energy absorbing device is designed randomly, and the detachable chain type stretching energy absorbing device comprises a square shape, a hexagonal shape, an octagonal shape or a round shape, so that the requirements of different use scenes are met.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111114582.2A CN113915289B (en) | 2021-09-23 | 2021-09-23 | Detachable chain type stretching energy absorbing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111114582.2A CN113915289B (en) | 2021-09-23 | 2021-09-23 | Detachable chain type stretching energy absorbing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113915289A CN113915289A (en) | 2022-01-11 |
| CN113915289B true CN113915289B (en) | 2023-06-16 |
Family
ID=79235856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111114582.2A Active CN113915289B (en) | 2021-09-23 | 2021-09-23 | Detachable chain type stretching energy absorbing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113915289B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1475772A (en) * | 1965-03-18 | 1967-04-07 | Elastic chain | |
| CN1715702A (en) * | 2004-06-28 | 2006-01-04 | 通用电气公司 | Energy absorbing articles |
| CN108248534A (en) * | 2018-01-19 | 2018-07-06 | 青岛四方庞巴迪铁路运输设备有限公司 | Energy-absorbing device of vehicle body and its method |
| DE202015009724U1 (en) * | 2015-04-02 | 2019-08-16 | Tesa Se | Removable pressure-sensitive adhesive strip |
| CN110388405A (en) * | 2019-07-22 | 2019-10-29 | 深圳市乾行达科技有限公司 | Impact energy-absorbing protective device |
| CN212452261U (en) * | 2020-08-06 | 2021-02-02 | 湖南大学 | Section assembled ship collision prevention device unit and ship collision prevention device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090212474A1 (en) * | 2008-02-25 | 2009-08-27 | Reeves Eric | Energy Absorption Apparatus for Fall Protection Systems |
| JP6618234B2 (en) * | 2013-02-06 | 2019-12-11 | 株式会社ウッドワン | Wooden joinery and method of manufacturing wooden joinery |
| CN103398122B (en) * | 2013-08-05 | 2015-04-15 | 北京航空航天大学 | Easily-assembled self-locking energy-absorbing device of dumbbell-shaped thin-walled-tube structure |
| CN108757794B (en) * | 2018-06-26 | 2020-09-25 | 哈尔滨工程大学 | Composite material tensile energy-absorbing member and preparation method thereof |
| CN111022547B (en) * | 2019-12-18 | 2022-03-22 | 东莞理工学院 | Particle damping track vibration damper based on mortise and tenon connection |
| CN211924753U (en) * | 2020-04-13 | 2020-11-13 | 沈阳洪祥机械有限公司 | Shaft coupling convenient to dismantle |
| CN113090694B (en) * | 2021-04-16 | 2022-02-18 | 中山大学 | Energy-absorbing protective device capable of being flexibly disassembled and rapidly expanded |
-
2021
- 2021-09-23 CN CN202111114582.2A patent/CN113915289B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1475772A (en) * | 1965-03-18 | 1967-04-07 | Elastic chain | |
| CN1715702A (en) * | 2004-06-28 | 2006-01-04 | 通用电气公司 | Energy absorbing articles |
| DE202015009724U1 (en) * | 2015-04-02 | 2019-08-16 | Tesa Se | Removable pressure-sensitive adhesive strip |
| CN108248534A (en) * | 2018-01-19 | 2018-07-06 | 青岛四方庞巴迪铁路运输设备有限公司 | Energy-absorbing device of vehicle body and its method |
| CN110388405A (en) * | 2019-07-22 | 2019-10-29 | 深圳市乾行达科技有限公司 | Impact energy-absorbing protective device |
| CN212452261U (en) * | 2020-08-06 | 2021-02-02 | 湖南大学 | Section assembled ship collision prevention device unit and ship collision prevention device |
Non-Patent Citations (1)
| Title |
|---|
| 熔体发泡法泡沫铝的加工特性;付自来;;材料开发与应用(第05期);76-81 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113915289A (en) | 2022-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Tarlochan et al. | Advanced composite sandwich structure design for energy absorption applications: Blast protection and crashworthiness | |
| Abdewi et al. | Quasi-static axial and lateral crushing of radial corrugated composite tubes | |
| Liu et al. | Crash responses under multiple impacts and residual properties of CFRP and aluminum tubes | |
| CN107605059B (en) | Remove assembled blast wall | |
| CN203876693U (en) | Energy-absorbing pipe of ox-horn-like structure | |
| CN112428949B (en) | Recoverable car energy-absorbing box that warp based on vibration material disk | |
| CN113915289B (en) | Detachable chain type stretching energy absorbing device | |
| CN208593365U (en) | A kind of electric car anti-collision beam energy absorbing box | |
| CN104527555A (en) | Collision energy absorbing device with various energy absorbing forms and application thereof | |
| Yuen et al. | The energy absorption characteristics of double-cell tubular profiles | |
| CN112158159A (en) | Automobile collision energy absorption box | |
| CN108909663A (en) | Vehicle and its bumper bar | |
| CN104632976A (en) | Elastic-plastic energy-absorption buffer component | |
| CN104386011A (en) | Compound type crash box with high impact energy-absorption performance | |
| Kumar et al. | Static axial crushing response on the energy absorption capability of hybrid Kenaf/Glass fabric cylindrical tubes | |
| CN111577809B (en) | Combined type energy absorption device based on cut honeycomb structure filled thin-wall metal pipe | |
| Mohamed et al. | Numerical and experimental study of the effect of orientation and stacking sequence on petalling of composite cylindrical tubes under axial compression | |
| CN107972618B (en) | Automobile collision energy-absorbing device capable of collapsing in grading manner | |
| CN105235617B (en) | Aluminium alloys for automobile energy-absorption box | |
| CN212021327U (en) | Fiber reinforced plastic waste resin-containing fiber separation device | |
| CN204692427U (en) | A kind of elastoplasticity energy-absorbing buffering assembly | |
| CN107139507B (en) | A kind of high crash-worthiness cylindrical structure forming method of composite material | |
| CN102913582A (en) | Load buffer energy absorbing device and energy absorbing method | |
| RU2475392C1 (en) | Collision energy damper module for vehicles | |
| Saputra et al. | The crushing behaviour of bamboo fibres reinforced epoxy matrix composite tube under quasi-static compression loading |
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 |