CN101097174A - High gradient waveshape generating device used for impaction simulating trolley - Google Patents
High gradient waveshape generating device used for impaction simulating trolley Download PDFInfo
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- CN101097174A CN101097174A CNA2006100284579A CN200610028457A CN101097174A CN 101097174 A CN101097174 A CN 101097174A CN A2006100284579 A CNA2006100284579 A CN A2006100284579A CN 200610028457 A CN200610028457 A CN 200610028457A CN 101097174 A CN101097174 A CN 101097174A
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- energy absorbing
- absorbing tube
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Abstract
The invention discloses a high- grads waveform generating device which is used in collision simulating trolley, the invention aims at providing a high- grads waveform generating device; it includes front and back collision bar, front and back energy absorbing tube; said front and back energy absorbing tube are connected with the front and back collision bar; said front and back energy absorbing tube are separately fixed to the trolley; when the trolley is released, the front collision bar moves relatively to front energy absorbing tube after collision with obstacle wall, the thick bar part expands the thin tube part of front energy absorbing tube and at the same time the acting force is delivered to back collision bar, the back collision bar expends thin bar part of the back energy absorbing tube, the acting force is resultant force of front and back collision bar, the acting force is increased abruptly, grads of acceleration is ascend rapidly to simulate high- grads collision waveform; when back collision bar penetrates through the back energy absorbing tube, the acting force of front collision bar is remained, acceleration is decreased for the reduced acting force, so high- grads simulated waveform can be generated.
Description
Technical field
The present invention relates to vehicle is carried out the Waveshape reproduction device that the trolley for simulating car collision of security study, test and check usefulness is used.
Technical background
For the security performance that increases vehicle and the most reliably the various facilities in the designing car intensity, stability and to safety component test, research and development etc., before putting into production, the security performance of reply vehicle is done dynamically test, the comprehensive strength and the impact property at each test position when colliding to estimate the place ahead, this test are that the simulation experiment method of the speed when reproducing retarded velocity waveform when colliding with time curve and collision is finished.In order to make the test findings that obtains more accurate, use real vehicle in the test sometimes, but the test finish after this real vehicle scrapped substantially, make the test prices are rather stiff.Particularly some safety component as seat, securing band etc., must guarantee to keep repeatability in test and product detection, just must adopt the simulation chassis could keep required repeatability in the product detection.Though traditional chassis also can be simulated some performance graphs, apparatus expensive requires height to experimental enviroment, and particularly the curve of being simulated is single.To this, the inventor has submitted to " trolley for simulating car collision " patent application (publication number CN1381368A), this patent application can satisfy general automotive safety parts substantially in April 23 calendar year 2001 research and development and product detect.But after in a few years using, find that this invention also exists the some shortcomings part, mainly shows:
1. when the simulated crash curve, particularly during the automobile of some economic vehicles, because the collision process of econobox is more fierce, altering a great deal of the impact curve that is produced, the gradient that is impact curve is very big, and existing technology is relatively level and smooth owing to the deformation of energy absorbing tube, the curve that is difficult to simulate this big gradient;
2. when the weight of chassis increased, the quantity of needed guide rod and energy absorbing tube also must correspondingly increase pro rata, and energy absorbing tube is too many, was difficult to guarantee consistance each other, and whole simulation difficulty is strengthened, and the repeatability of resulting impact simulation curve descends.
Summary of the invention
The object of the present invention is to provide the defective of depositing at prior art, a kind of high gradient waveshape generating device that is used for impaction simulating trolley is provided, comprise preceding collision bar, preceding energy absorbing tube, back collision bar, back energy absorbing tube, the collision bar web member, preceding energy absorbing tube fixture, back energy absorbing tube fixture, body mounts, collision bar outside before energy absorbing tube is socketed in before wherein said, the inside surface of preceding energy absorbing tube matches with the outside surface of preceding collision bar, described back energy absorbing tube is socketed in collision bar outside, back, the inside surface of back energy absorbing tube matches with the outside surface of back collision bar, collision bar and back collision bar all are made up of the excessive part between thick bar part and thin rod part branch and thick bar part and the thin bar before described, excessively part is tapered, energy absorbing tube and back energy absorbing tube are made up of the excessive part between the part of tube portion and tubule roughly and extra heavy pipe and the tubule before described, excessively part is tapered, described collision bar web member is between preceding collision bar and back collision bar, and described preceding energy absorbing tube and back energy absorbing tube are fixed together with chassis respectively.
The high gradient waveshape generating device that is used for impaction simulating trolley at another kind provided by the invention, when being hit into preceding energy absorbing tube, back energy absorbing tube, described preceding collision bar, back collision bar can produce expansion, the internal diameter of the tubule part of preceding energy absorbing tube, back energy absorbing tube will be enlarged to the outside dimension of the thick bar part of preceding collision bar, back collision bar, expansion power be less than preceding energy absorbing tube, the back energy absorbing tube fracture strength, so as not to preceding energy absorbing tube, the back energy absorbing tube broken.
Be used for the high gradient waveshape generating device of impaction simulating trolley at another kind provided by the invention, the strength of joint of described body mounts is greater than the fracture strength of expansion power and energy absorbing tube.
The high gradient waveshape generating device that is used for impaction simulating trolley at another kind provided by the invention, the diameter of described collision bar web member is less than or equals the diameter of the thin rod part branch of preceding collision bar, back collision bar, described collision bar web member can be a monoblock, it also can be the polylith polyphone, the intensity of collision bar web member itself is greater than expansion power, to guarantee that itself can not be out of shape in collision process.
The high gradient waveshape generating device that is used for impaction simulating trolley at another kind provided by the invention, it also can be a plurality of that described back collision bar and together the back energy absorbing tube of socket-connecting can be one, if it is a plurality of, can adopt the collision bar web member to connect between then a plurality of, also can directly collision bar be linked to each other with collision bar.
The high gradient waveshape generating device that is used for impaction simulating trolley at another kind provided by the invention, described a kind of high gradient waveshape generating device that is used for impaction simulating trolley, can be arranged separately on the chassis and use, also can severally be installed in simultaneously on the same chassis and use, also can be installed in together on the same chassis and use with other waveform generator, to produce different waveforms, satisfy different waveform needs.
The present invention can produce the impact curve of big gradient compared with prior art, satisfies the particularly demand of the simulated crash curve of economical vehicle of different automobile types, and can produce a plurality of peaks, and is in light weight, easy to operate.
Description of drawings
Fig. 1 is that a kind of high gradient waveshape generating device that is used for impaction simulating trolley of the present invention is installed in a synoptic diagram on the impaction simulating trolley;
Fig. 2 is a kind of structural representation that is used for the high gradient waveshape generating device of impaction simulating trolley of the present invention.
Concrete enforcement
The present invention is described in further detail below in conjunction with accompanying drawing and embodiment, as shown in Figure 1, it has described one embodiment of the present of invention, on chassis 12, high gradient waveshape generating device is installed by body mounts 11, on the end face of preceding collision bar 1 buffer stopper 2 is installed, avoid chassis 12 when collision, to produce the moment rigid collision, sensor on the protection chassis 12, the outside of collision bar 1 before preceding energy absorbing tube 3 is enclosed within, preceding energy absorbing tube 3 is connected with bracing frame 6 by preceding energy absorbing tube fixture 5, back energy absorbing tube 9 is enclosed within the outside of back collision bar 14, back energy absorbing tube 9 links to each other with bracing frame 10 by back energy absorbing tube fixture 15, be cascaded by collision bar web member 7 between preceding collision bar 1 and the back collision bar 14, described collision bar web member 7 can be independent one, also can be the polylith stack, but its diameter can not be greater than the thin rod part branch of collision bar; The front end face 4 of preceding energy absorbing tube 3 is being fixed by preceding energy absorbing tube fixture 5 with bracing frame 6, and it is fixing that back energy absorbing tube 9 and bracing frame 10 pass through web member 15, and preceding collision bar 1 is installed in the front portion 13 of chassis 12; Bracing frame 6 by body mounts 11 be fixed on the chassis 12, bracing frame 10 directly is fixed on the chassis 12; When chassis 12 is released with predetermined speed, the buffer stopper 2 that is positioned on the preceding collision bar 1 of chassis 12 front portions 13 bumps against with the wall of knocking down, preceding collision bar 1 is subjected to clashing into the back with respect to preceding energy absorbing tube 3 motions, before the thick bar part of collision bar 1 tubule of preceding energy absorbing tube 3 is partly expanded to open simultaneously acting force is passed to back collision bar 14 by collision bar web member 7, the thick bar part of back collision bar 14 is with respect to 9 motions of back energy absorbing tube, divide expansion to open the thin rod part of back energy absorbing tube 9, this moment is because suffered acting force is a preceding collision bar 1 and the making a concerted effort of the acting force of back collision bar 14, because chassis 12 suffered acting forces are increased suddenly, thereby produce very big acceleration, the gradient of acceleration rises rapidly, simulates high gradient impact simulation waveform; When after after collision bar 14 penetrates back energy absorbing tube 9, back collision bar 14 has not had acting force, only the acting force of remaining preceding collision bar; This moment, acting force reduced suddenly again, and acceleration descends rapidly again, produced the negative gradient waveform of high gradient; The quantity of wall thickness, material and the back collision bar of the thickness by changing collision bar, the relative position of collision bar, energy absorbing tube can produce the analog waveform of different gradients, different sizes; Can also produce more waveform to satisfy the demand by a kind of high gradient waveshape generating device that is used for impaction simulating trolley provided by the invention and other waveshape generating device are installed in acting in conjunction on the chassis 12 simultaneously.
Foregoing embodiment is not a limitation of the invention just to explanation of the present invention, about design of the present invention and protection domain are all put down in writing in claims of the present invention.
Claims (6)
1. high gradient waveshape generating device that is used for impaction simulating trolley, comprise preceding collision bar (1), preceding energy absorbing tube (3), back collision bar (14), back energy absorbing tube (9), collision bar web member (7), preceding energy absorbing tube fixture (5), back energy absorbing tube fixture (15), collision bar web member (7), body mounts (11), it is characterized in that, energy absorbing tube (3) is socketed in preceding collision bar (1) outside before described, the inside surface of preceding energy absorbing tube (3) matches with the outside surface of preceding collision bar (1), described back energy absorbing tube (9) is socketed in back collision bar (14) outside, the inside surface of back energy absorbing tube (9) matches with the outside surface of back collision bar (14), collision bar (1) and back collision bar (14) all are made up of the excessive part between thick bar part and thin rod part branch and thick bar part and the thin bar before described, excessively part is tapered, energy absorbing tube (3) and back energy absorbing tube (9) all are made up of the excessive part that thick tube part and tubule partly reach between thick bar and the thin bar before described, excessively part is tapered, described collision bar web member (7) is positioned between preceding collision bar (1) and the back collision bar (14), and described preceding energy absorbing tube (3) and back energy absorbing tube (9) are fixed together with chassis (12) respectively.
2. collision bar (1), back collision bar (14) before according to claim 1, it is characterized in that, current collision bar (1), back collision bar (14) can produce the outside dimension that expansion will be enlarged to the internal diameter of the tubule part of preceding energy absorbing tube (3), back energy absorbing tube (9) the thick bar part of preceding collision bar (1), back collision bar (14) when being hit into preceding energy absorbing tube (3), back energy absorbing tube (9), expansion power be less than preceding energy absorbing tube (3), the back energy absorbing tube (9) fracture strength, so as not to preceding energy absorbing tube (3), the back energy absorbing tube (9) broken.
3. body mounts according to claim 1 (11) is characterized in that, the strength of joint of body mounts (11) is greater than the fracture strength of expansion power and energy absorbing tube.
4. collision bar web member according to claim 1 (7), it is characterized in that, the diameter of described collision bar web member (7) is less than or equals the diameter of the thin rod part branch of preceding collision bar (1), back collision bar (14), described collision bar web member (7) can be a monoblock, it also can be the polylith polyphone, the intensity of collision bar web member (7) itself is greater than expansion power, to guarantee that itself can not be out of shape in collision process.
5. back according to claim 1 collision bar (14) and together the back energy absorbing tube (9) of socket-connecting, it is characterized in that, it also can be a plurality of that described back collision bar (14) and back energy absorbing tube (9) can be one, if a plurality of, also adopt collision bar web member (7) to connect between then a plurality of.
6. a kind of high gradient waveshape generating device that is used for impaction simulating trolley according to claim 1, it is characterized in that, can be arranged separately on the chassis and use, also can severally be installed in simultaneously on the same chassis and use, also can be installed in together on the same chassis and use with other waveform generator, to produce different waveforms, satisfy different waveform needs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100284579A CN101097174A (en) | 2006-06-30 | 2006-06-30 | High gradient waveshape generating device used for impaction simulating trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100284579A CN101097174A (en) | 2006-06-30 | 2006-06-30 | High gradient waveshape generating device used for impaction simulating trolley |
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| Publication Number | Publication Date |
|---|---|
| CN101097174A true CN101097174A (en) | 2008-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100284579A Pending CN101097174A (en) | 2006-06-30 | 2006-06-30 | High gradient waveshape generating device used for impaction simulating trolley |
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| CN (1) | CN101097174A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110749460A (en) * | 2019-11-25 | 2020-02-04 | 清华大学苏州汽车研究院（相城） | Collision trolley energy absorption structure suitable for multiple working conditions |
| CN113008500A (en) * | 2021-03-02 | 2021-06-22 | 清华大学 | Acceleration test device and test method |
-
2006
- 2006-06-30 CN CNA2006100284579A patent/CN101097174A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110749460A (en) * | 2019-11-25 | 2020-02-04 | 清华大学苏州汽车研究院（相城） | Collision trolley energy absorption structure suitable for multiple working conditions |
| CN113008500A (en) * | 2021-03-02 | 2021-06-22 | 清华大学 | Acceleration test device and test method |
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