CN110749460A - Collision trolley energy absorption structure suitable for multiple working conditions - Google Patents
Collision trolley energy absorption structure suitable for multiple working conditions Download PDFInfo
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- CN110749460A CN110749460A CN201911163331.6A CN201911163331A CN110749460A CN 110749460 A CN110749460 A CN 110749460A CN 201911163331 A CN201911163331 A CN 201911163331A CN 110749460 A CN110749460 A CN 110749460A
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 26
- 210000001503 joint Anatomy 0.000 claims description 9
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 238000012360 testing method Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/0078—Shock-testing of vehicles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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Abstract
The invention discloses a collision trolley energy absorption structure suitable for multiple working conditions, which comprises a hollow front-section outer pipe and a hollow rear-section outer pipe, a front-section inner pipe, a rear-section inner pipe and a connecting piece assembly, wherein the end parts of the hollow front-section outer pipe and the hollow rear-section outer pipe are fixedly butted with each other, the front-section inner pipe is arranged in the front-section outer pipe, the rear-section inner pipe is arranged in the rear-section outer pipe; the tip periphery of anterior segment inner tube is equipped with the guide ring of embedding back end inner tube internal periphery, can dismantle between connecting piece subassembly and the anterior segment inner tube and be connected different intensity installed parts, and fixed or non-fixed setting between back end inner tube and the back end outer tube. The invention realizes the improvement of the anti-collision performance of the collision trolley and the reliability of the trolley test.
Description
Technical Field
The invention belongs to the technical field of machine manufacturing, and particularly relates to a collision trolley energy absorption structure suitable for multiple working conditions.
Background
Along with the gradual development trend of electric automobiles, the battery strength can be verified through a collision test in the research and development process of related vehicles, whether related constraint systems meet the requirements on the strength of related structural members or not, the cost of the whole vehicle collision test is huge, the trolley test is often used for replacing the whole vehicle test, the trolley generally collides with a collision wall or a waveform generator during the trolley test, and therefore a proper energy absorption structure is needed, the energy absorption effect of an energy absorption pipe can influence the test data acquisition, and therefore the trolley energy absorption structure which is suitable for multiple working conditions and has a good energy absorption effect is needed.
Disclosure of Invention
The invention aims to solve the technical problems and provide a crash trolley energy absorption structure suitable for multiple working conditions, so that the crash resistance and the test reliability of a trolley are improved. In order to achieve the purpose, the technical scheme of the invention is as follows:
the collision trolley energy absorption structure suitable for multiple working conditions comprises a hollow front-section outer pipe and a hollow rear-section outer pipe, wherein the end parts of the hollow front-section outer pipe and the hollow rear-section outer pipe are fixedly butted, a front-section inner pipe arranged in the front-section outer pipe, a rear-section inner pipe arranged in the rear-section outer pipe, and a connecting piece assembly which is sleeved on the periphery of the front-section inner pipe and connected with the rear-section; the tip periphery of anterior segment inner tube is equipped with the guide ring of embedding back end inner tube internal periphery, can dismantle between connecting piece subassembly and the anterior segment inner tube and be connected different intensity installed parts, and fixed or non-fixed setting between back end inner tube and the back end outer tube.
Specifically, the cross-sectional dimension of the front section outer pipe is phi 80mm x 1.5 mm.
Specifically, the cross-sectional dimension of the rear-section outer pipe is phi 80mm x 5 mm.
Specifically, the butt joint end of the front section outer pipe and the butt joint end of the rear section outer pipe are respectively provided with an outer flange.
Specifically, the corresponding outer flanges are connected through bolts.
Specifically, the cross-sectional dimension of the front section inner pipe is phi 40mm x 2 mm.
Specifically, the cross-sectional dimension of the inner tube of the rear section is phi 50mm x 1 mm.
Specifically, the connecting piece subassembly is including the lantern ring that is located the guide ring rear of the cover is located anterior segment inner tube, the cover is located anterior segment inner tube periphery and is connected the first inner flange of lantern ring, locate the second inner flange of the butt joint end of back end inner tube.
Specifically, the first inner flange and the second inner flange are connected through bolts.
Specifically, the energy absorption structure is made of 6060 aluminum alloy, and the density rho of the energy absorption structure is 2.7g/cm3The elastic modulus E is 83GPa, poisson ratio μ is 0.3, and the yield strength σ b is 276 MPa.
Compared with the prior art, the energy absorption structure of the collision trolley suitable for multiple working conditions has the following beneficial effects:
the trolley energy absorption structure is suitable for multiple working conditions, can realize multiple working conditions, can absorb trolley energy in the case of multiple loads, and can realize multi-stage trolley energy absorption through a combined reinforced structure.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a partial front sectional view of the present embodiment;
the figures in the drawings represent:
1 anterior segment outer tube, 2 back end outer tubes, 3 anterior segment inner tubes, 31 guide ring, 4 back end inner tubes, 5 outer flanges, 6 lantern rings, 61 first inner flange, 62 second inner flange.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example (b):
referring to fig. 1-2, the energy absorbing structure of the crash trolley adapted to multiple working conditions in this embodiment includes a hollow front-section outer tube 1 and a hollow rear-section outer tube 2 whose end portions are butt-jointed and fixed, a front-section inner tube 3 disposed inside the front-section outer tube 1, a rear-section inner tube 4 disposed inside the rear-section outer tube 2, and a connecting member assembly sleeved around the front-section inner tube 3 and connected to the rear-section inner tube 4; the tip periphery of anterior segment inner tube 3 is equipped with the interior peripheral guide ring 31 of embedding back end inner tube 4, can dismantle between connecting piece subassembly and the anterior segment inner tube 3 and be connected different intensity installed parts (not shown in the figure), and fixed or non-fixed setting is between back end inner tube 4 and the back end outer tube 2.
The cross-sectional dimension of the front section outer tube 1 is phi 80mm 1.5mm, and the cross-sectional dimension of the rear section outer tube 2 is phi 80mm 5 mm.
The butt joint end of the front section outer pipe 1 and the butt joint end of the rear section outer pipe 2 are respectively provided with an outer flange 5, and the corresponding outer flanges 5 are connected through bolts.
The front section inner tube 3 has a cross-sectional dimension of phi 40mm by 2mm, and the rear section inner tube 4 has a cross-sectional dimension of phi 50mm by 1 mm.
The connecting component comprises a lantern ring 6 which is sleeved on the front section inner pipe 3 and is positioned behind the guide ring 31, a first inner flange 61 which is sleeved on the periphery of the front section inner pipe 3 and is connected with the lantern ring 6, and a second inner flange 62 which is arranged on the butt joint end of the rear section inner pipe 4. The first inner flange 61 and the second inner flange 62 are connected by bolts.
6060 aluminum alloy is selected as the material of the energy absorption structure in the embodiment, and the parameters of the material are as follows: density rho 2.7g/cm3The elastic modulus E is 83GPa, poisson ratio μ is 0.3, and the yield strength σ b is 276 MPa. The aluminum alloy has the advantages of high energy absorption ratio, light weight, stable deformation, simple structure, easy combination and the like.
The collision stiffness of the front section outer tube 1, the front section inner tube 3 and the rear section inner tube 4 of the energy absorption structure in the embodiment is respectively E1, E2 and E3, and E2> E3, and the deformation mode of the energy absorption mechanism is changed through different collision stiffness:
a) when the connecting piece assembly does not fail, the front section outer pipe 1 and the front section inner pipe 3 are simultaneously crushed in the collision process of the energy absorption structure, and the collision stiffness of the energy absorption structure is the maximum stiffness E1+ E2.
b) When the outer flange of the energy-absorbing structure fails, the front section outer pipe 1 and the rear section inner pipe 4 are simultaneously crushed in the collision process of the energy-absorbing structure, and the collision stiffness of the energy-absorbing structure is the intermediate stiffness E1+ E3.
c) When the inner flange of the energy-absorbing structure fails, the front-section inner tube 3 is sleeved into the rear-section inner tube 4 in the collision process of the energy-absorbing structure, the front-section outer tube 1 is independently crushed, and the collision rigidity of the energy-absorbing structure is the minimum rigidity E1.
The energy-absorbing structure can realize three combined deformation forms:
A) welding a second inner flange 62 of the rear-section inner tube 4 with an outer flange 5 of the rear-section outer tube 2, fixedly connecting the front-section inner tube 3 with the lantern ring 6 through high-strength bolts, placing the front-section inner tube on the second inner flange 62 of the rear-section inner tube 4, and simultaneously deforming the front-section outer tube 1 and the front-section inner tube 3 in the deformation process;
B) on the basis of the first form, the connection relation of the front section inner pipe 3 is kept, the connection between the second inner flange 62 of the rear section inner pipe 4 and the outer flange 5 of the rear section outer pipe 2 is disconnected, and the front section outer pipe 1 and the rear section inner pipe 4 are simultaneously deformed in the deformation process;
C) on the basis of the first form, the welding relation between the second inner flange 62 of the rear-section inner pipe 4 and the outer flange 5 of the rear-section outer pipe 2 is maintained, the high-strength mounting piece of the front-section inner pipe 3 is replaced by a low-strength mounting piece, the mounting pieces are bolts in the embodiment, the bolts are sheared in the deformation process, the front-section inner pipe 3 falls into the rear-section inner pipe 4, and the front-section outer pipe 1 deforms independently.
When the embodiment is applied, the trolley energy absorption structure suitable for multiple working conditions can realize multiple working conditions, the trolley can absorb energy in the case of collision under multiple loads, and the trolley can realize multi-stage collision energy absorption in a combined reinforcing mode; the energy-absorbing structure is divided into a deformation section and a transition section two-section structure by adopting circular pipes with different rigidity to combine, the front inner pipe and the rear inner pipe adopt two sections with different rigidity, the adjustable range of rigidity and the rigidity value are increased, the deformation of the transition section is smaller in the collision, the deformation of the deformation section is larger in the collision, and the pipe body is connected by the point explosion type connecting piece, so that the action timeliness of the energy-absorbing structure is improved.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (10)
1. Adapt to crash trolley energy-absorbing structure of multiplex condition, its characterized in that: the connecting piece assembly comprises a hollow front-section outer pipe and a hollow rear-section outer pipe, the ends of which are fixedly butted, a front-section inner pipe arranged in the front-section outer pipe, a rear-section inner pipe arranged in the rear-section outer pipe, and a connecting piece assembly which is sleeved on the periphery of the front-section inner pipe and is connected with the rear-section inner pipe; the tip periphery of anterior segment inner tube is equipped with the guide ring of embedding back end inner tube internal periphery, can dismantle between connecting piece subassembly and the anterior segment inner tube and be connected different intensity installed parts, and fixed or non-fixed setting between back end inner tube and the back end outer tube.
2. The crash trolley energy absorbing structure adapted to multiple operating conditions of claim 1, wherein: the cross section size of the front section outer pipe is phi 80mm x 1.5 mm.
3. The crash trolley energy absorbing structure adapted to multiple operating conditions of claim 1, wherein: the cross section size of the back section outer pipe is phi 80mm x 5 mm.
4. The crash trolley energy absorbing structure adapted to multiple operating conditions of claim 1, wherein: and the butt joint end of the front section outer pipe and the butt joint end of the rear section outer pipe are respectively provided with an outer flange.
5. The crash trolley energy absorbing structure adapted to multiple operating conditions of claim 4, wherein: the corresponding outer flanges are connected through bolts.
6. The crash trolley energy absorbing structure adapted to multiple operating conditions of claim 1, wherein: the cross section size of forepart inner tube is phi 40mm 2 mm.
7. The crash trolley energy absorbing structure adapted to multiple operating conditions of claim 1, wherein: the cross-sectional dimension of the inner pipe of the rear section is phi 50mm x 1 mm.
8. The crash trolley energy absorbing structure adapted to multiple operating conditions of claim 1, wherein: the connecting piece assembly comprises a lantern ring, a first inner flange and a second inner flange, wherein the lantern ring is sleeved on the front section inner pipe and located behind the guide ring, the first inner flange is sleeved on the periphery of the front section inner pipe and connected with the lantern ring, and the second inner flange is arranged at the butt joint end of the rear section inner pipe.
9. The crash trolley energy absorbing structure adapted to multiple operating conditions of claim 8, wherein: the first inner flange and the second inner flange are connected through bolts.
10. The crash trolley energy absorbing structure adapted to multiple operating conditions of claim 1, wherein: the energy absorption structure is made of 6060 aluminum alloy, and the density rho of the energy absorption structure is 2.7g/cm3The elastic modulus E is 83GPa, poisson ratio μ is 0.3, and the yield strength σ b is 276 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911163331.6A CN110749460A (en) | 2019-11-25 | 2019-11-25 | Collision trolley energy absorption structure suitable for multiple working conditions |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911163331.6A CN110749460A (en) | 2019-11-25 | 2019-11-25 | Collision trolley energy absorption structure suitable for multiple working conditions |
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| CN110749460A true CN110749460A (en) | 2020-02-04 |
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| CN201911163331.6A Pending CN110749460A (en) | 2019-11-25 | 2019-11-25 | Collision trolley energy absorption structure suitable for multiple working conditions |
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Citations (5)
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|---|---|---|---|---|
| CN101097174A (en) * | 2006-06-30 | 2008-01-02 | 上海冠驰汽车安全技术有限公司 | High gradient waveshape generating device used for impaction simulating trolley |
| DE102009055085A1 (en) * | 2009-12-21 | 2011-06-22 | Robert Bosch GmbH, 70469 | Crashbox for a motor vehicle |
| CN202451495U (en) * | 2012-01-13 | 2012-09-26 | 浙江吉利汽车研究院有限公司 | Pneumatic cylinder applied to automobile crash test |
| CN104729820A (en) * | 2015-03-23 | 2015-06-24 | 南车青岛四方机车车辆股份有限公司 | Vehicle collision dynamic test device and method |
| CN107283872A (en) * | 2017-08-03 | 2017-10-24 | 武汉理工大学 | The ply sequence and manufacture method of a kind of electronic racing car monocoque body |
-
2019
- 2019-11-25 CN CN201911163331.6A patent/CN110749460A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101097174A (en) * | 2006-06-30 | 2008-01-02 | 上海冠驰汽车安全技术有限公司 | High gradient waveshape generating device used for impaction simulating trolley |
| DE102009055085A1 (en) * | 2009-12-21 | 2011-06-22 | Robert Bosch GmbH, 70469 | Crashbox for a motor vehicle |
| CN202451495U (en) * | 2012-01-13 | 2012-09-26 | 浙江吉利汽车研究院有限公司 | Pneumatic cylinder applied to automobile crash test |
| CN104729820A (en) * | 2015-03-23 | 2015-06-24 | 南车青岛四方机车车辆股份有限公司 | Vehicle collision dynamic test device and method |
| CN107283872A (en) * | 2017-08-03 | 2017-10-24 | 武汉理工大学 | The ply sequence and manufacture method of a kind of electronic racing car monocoque body |
Non-Patent Citations (2)
| Title |
|---|
| XU SC: "Optimization Exploration on Impact Resistance of Bionic Sandwich Panel Inspired by the Appendage Structure", 《INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS》, 31 May 2023 (2023-05-31) * |
| 许述财: "仿竹结构薄壁管的轴向耐撞性分析及优化", 《清华大学学报（自然科学版）》, 31 December 2014 (2014-12-31) * |
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