CN109211579A - Fixture is used in flexible leg collision test method and collision - Google Patents
Fixture is used in flexible leg collision test method and collision Download PDFInfo
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- CN109211579A CN109211579A CN201810317681.2A CN201810317681A CN109211579A CN 109211579 A CN109211579 A CN 109211579A CN 201810317681 A CN201810317681 A CN 201810317681A CN 109211579 A CN109211579 A CN 109211579A
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- 238000010998 test method Methods 0.000 title claims abstract description 17
- 238000012360 testing method Methods 0.000 claims abstract description 26
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000013461 design Methods 0.000 claims description 10
- 230000001133 acceleration Effects 0.000 claims description 3
- 238000012938 design process Methods 0.000 abstract description 4
- 210000002414 leg Anatomy 0.000 description 23
- 238000010586 diagram Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 7
- 238000009863 impact test Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
Classifications
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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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Abstract
The present invention provides a kind of flexible leg collision test method and collision fixtures.The collision fixture includes pedestal；First support bar and second support bar, are vertically arranged on the base；First support base, both ends are separately fixed in the first support bar and second support bar, and the first energy-absorbing crossbeam is equipped on first support base；Second support base, both ends are separately fixed in the first support bar and second support bar, and the second energy-absorbing crossbeam is equipped on second support base；Third support base, both ends are separately fixed in the first support bar and second support bar, and third energy-absorbing crossbeam is equipped on the third support base；Wherein, the first energy-absorbing crossbeam, the second energy-absorbing crossbeam and third energy-absorbing crossbeam are horizontally disposed, and the first energy-absorbing crossbeam is located at the top of the second energy-absorbing crossbeam, and the third energy-absorbing crossbeam is located at the lower section of the second energy-absorbing crossbeam.A kind of flexible leg collision test method proposed by the present invention and collision fixture, substitute traditional complete vehicle test, accelerate the design process of pedestrian protection.
Description
Technical field
The present invention relates to vehicle impact testing technology and equipment manufacturing field more particularly to a kind of flexible leg impact test sides
Fixture is used in method and collision.
Background technique
The pedestrian protecting performance of automobile is the important investigation factor of current Crash Safety Design of Vehicles energy.At present both at home and abroad by vapour
Pedestrian protective crash's test of vehicle is divided into head impact, thigh collision and shank collision three parts.Pedestrian protecting shank performance is set
At the beginning of meter, the test ram of use is rigid leg model.With the development of technology, (European Union's new car authenticates journey to Euro-NCAP
Sequence/center) etc. external important automotive safety assessing mechanism biosimulation performance has been changed to the bump test of shank performance
More preferably, the more specific Flex-PLI flexible leg ram of damage evaluation.Pedestrian protecting flexible leg model impingement position is mainly vapour
The front bumper and near zone of vehicle.Fig. 1 is the schematic diagram of impact test in the prior art.As shown, test vehicle 100
Front end bumper can be divided into top 101, middle part 102 and the section of lower part 103 3, bump test use flexible leg 104 with
Setting speed hits the front bumper of automobile.However current pedestrian's protective development process suffers from the limit of automobile research process
System, bumper sample cannot make mold, process in time and for testing, and delay entire design process.
Summary of the invention
In view of the above problems in the prior art, the invention proposes a kind of flexible leg collision test method and collision folders
Tool, overall structure is simple, with collision with fixture come simulating vehicle front bumper region, accelerate the design of pedestrian protection
Journey.
Specifically, the invention proposes a kind of collision fixtures, including,
Pedestal；
First support bar and second support bar, are vertically arranged on the base；
First support base, both ends are separately fixed in the first support bar and second support bar, at described first
It supports seat and is equipped with the first energy-absorbing crossbeam；
Second support base, both ends are separately fixed in the first support bar and second support bar, at described second
It supports seat and is equipped with the second energy-absorbing crossbeam；
Third support base, both ends are separately fixed in the first support bar and second support bar, in the third branch
It supports seat and is equipped with third energy-absorbing crossbeam；
Wherein, the first energy-absorbing crossbeam, the second energy-absorbing crossbeam and third energy-absorbing crossbeam are horizontally disposed, first energy-absorbing
Crossbeam is located at the top of the second energy-absorbing crossbeam, and the third energy-absorbing crossbeam is located at the lower section of the second energy-absorbing crossbeam.
It according to one embodiment of present invention, further include muti-piece stiffening plate, the bottom of the stiffening plate and the pedestal are solid
Fixed connection, the side of the stiffening plate is fixedly connected with the first support bar or second support bar.
According to one embodiment of present invention, in the first energy-absorbing crossbeam, the second energy-absorbing crossbeam or third energy-absorbing crossbeam
It is upper to drill to adjust the rigidity of the first energy-absorbing crossbeam, the second energy-absorbing crossbeam or third energy-absorbing crossbeam.
According to one embodiment of present invention, first support base, the second support base or third support base are described
High and low position on one support rod and second support bar is adjustable, to adjust the first energy-absorbing crossbeam, the second energy-absorbing crossbeam or
The horizontal depth of beam of three energy-absorbings.
According to one embodiment of present invention, further include nut, opened up in the first support bar and second support bar
There are multiple first mounting holes, offers the second mounting hole in first support base, the second support base and third support base, it is described
Nut is fixed first support base, the second support base and third support base by first mounting hole and the second mounting hole
In the first support bar and second support bar.
It according to one embodiment of present invention, further include gasket, the gasket is arranged in first support base, second
It supports between any of any of seat and third support base and the first support bar and second support bar, to adjust
State the first energy-absorbing crossbeam, the relative position of the second energy-absorbing crossbeam or third energy-absorbing crossbeam in the horizontal direction.
The present invention also provides a kind of flexible leg collision test methods, using collision fixture above-mentioned, comprising steps of
The first step establishes design object, determines the first energy-absorbing crossbeam, the second energy-absorbing crossbeam or third energy-absorbing crossbeam
Target rigidity, height and horizontal relative position；
Second step, use impactor with the first setting speed come hit the first energy-absorbing crossbeam, the second energy-absorbing crossbeam or
Third energy-absorbing crossbeam calculates according to the acceleration information that the impactor obtains and obtains the first energy-absorbing crossbeam, the second energy-absorbing
The test rigidity of crossbeam or third energy-absorbing crossbeam；
Third step compares target rigidity and test rigidity, adjusts the first energy-absorbing crossbeam, the second energy-absorbing crossbeam or third
Rigidity, height and the horizontal relative position of energy-absorbing crossbeam；
4th step assembles the collision fixture, is packed into the first energy-absorbing crossbeam, the second energy-absorbing for having adjusted rigidity
Crossbeam or third energy-absorbing crossbeam；Adjust the first energy-absorbing crossbeam, the second energy-absorbing crossbeam or the horizontal depth of beam of third energy-absorbing；Adjustment
The horizontal relative position of the first energy-absorbing crossbeam, the second energy-absorbing crossbeam or third energy-absorbing crossbeam；
5th step hits the collision fixture with flexible leg with the second setting speed, according to the biography of the flexible leg
The testing result of sensor adjusts rigidity, height or the water of the first energy-absorbing crossbeam, the second energy-absorbing crossbeam or third energy-absorbing crossbeam
Flat relative position is to meet the design object.
According to one embodiment of present invention, first setting speed and second setting speed are 35~42km/
h。
According to one embodiment of present invention, in the third step in the first energy-absorbing crossbeam, the second energy-absorbing crossbeam or
It is horizontal to adjust the first energy-absorbing crossbeam, the second energy-absorbing that its area of section is drilled, changes its thickness or changed on three energy-absorbing crossbeams
The rigidity of beam or third energy-absorbing crossbeam.
It according to one embodiment of present invention, further include gasket, the gasket is arranged in first support base, second
It supports between any of any of seat and third support base and the first support bar and second support bar, the 4th
The first energy-absorbing crossbeam, the position of the second energy-absorbing crossbeam or third energy-absorbing crossbeam in the horizontal direction are adjusted in step.
A kind of flexible leg collision test method provided by the invention and collision use fixture, with collision with fixture come simulating vehicle
Front bumper region, it is easy to operate, accelerate the design process of pedestrian protection.
It should be appreciated that the general description and the following detailed description more than present invention be all it is exemplary and illustrative,
And it is intended that the present invention as claimed in claim provides further explanation.
Detailed description of the invention
It is to provide further understanding of the invention including attached drawing, they are included and constitute part of this application,
Attached drawing shows the embodiment of the present invention, and plays the role of explaining the principle of the invention together with this specification.In attached drawing:
Fig. 1 is the schematic diagram of impact test in the prior art.
Fig. 2 is the structural schematic diagram of collision fixture of the invention.
Fig. 3 a is the structural representation of original first energy-absorbing crossbeam, the second energy-absorbing crossbeam or third energy-absorbing crossbeam of the invention
Figure.
Fig. 3 b is the knot of the first energy-absorbing crossbeam, the second energy-absorbing crossbeam or third energy-absorbing crossbeam of the invention after adjusting rigidity
Structure schematic diagram.
Fig. 4 is the structural schematic diagram of collision fixture of the invention.
Fig. 5 is the flow diagram of flexible leg collision test method of the invention.
Fig. 6 is that the first energy-absorbing crossbeam, second are hit using impactor in flexible leg collision test method of the invention
The schematic diagram of energy-absorbing crossbeam or third energy-absorbing crossbeam.
Fig. 7 be adjusted in the present invention the first energy-absorbing crossbeam, the rigidity of the second energy-absorbing crossbeam or third energy-absorbing crossbeam, height and
The schematic diagram of horizontal relative position.
Fig. 8 is the schematic diagram for hitting collision fixture in the present invention with flexible leg.
Specific embodiment
Now with detailed reference to the preferred embodiment of the present invention, its example is shown in the drawings.In any possible situation
Under, in all the appended drawings the same or similar part will be indicated using identical label.In addition, although used in the present invention
Term be selected from public term, but some terms mentioned in description of the invention may be application
People carrys out selection by his or her judgement, and detailed meanings illustrate in the relevant portion of description herein.Furthermore, it is desirable that not only
Only by used actual terms, and the meaning contained by each term is also to understand the present invention.
Fig. 2 is the structural schematic diagram of collision fixture of the invention.As shown, a kind of collision is mainly wrapped with fixture 200
Include pedestal 201, first support bar 202, second support bar 203, the first support base 204, the second support base 205 and third support base
206。
Wherein, first support bar 202 and second support bar 203 are vertically set on pedestal 201.
The both ends of first support base 204 are separately fixed in first support bar 202 and second support bar 203, at first
It supports seat 204 and is equipped with the first energy-absorbing crossbeam 207.
The both ends of second support base 205 are separately fixed in first support bar 202 and second support bar 203, at second
It supports seat 205 and is equipped with the second energy-absorbing crossbeam 208.
The both ends of third support base 206 are separately fixed in first support bar 202 and second support bar 203, in third branch
It supports seat 206 and is equipped with third energy-absorbing crossbeam 209.
First energy-absorbing crossbeam 207, the second energy-absorbing crossbeam 208 and third energy-absorbing crossbeam 209 are all horizontally disposed, and three puts down substantially
Row.First energy-absorbing crossbeam 207 is located at the top of the second energy-absorbing crossbeam 208, and third energy-absorbing crossbeam position 209 is in the second energy-absorbing crossbeam
208 lower section.
A kind of collision fixture 200 provided by the invention simulates vehicle front bumper region.As shown in connection with fig. 1, second
Energy-absorbing crossbeam 208 is equivalent to the middle part 102 of the front end bumper of test vehicle 100, and the second energy-absorbing crossbeam 208 compares the first energy-absorbing
Crossbeam 207, third energy-absorbing crossbeam 209 from horizontal direction on outwardly protrude.First energy-absorbing crossbeam 207 is equivalent to test vehicle 100
Front end bumper top 101, third energy-absorbing crossbeam 209 is equivalent to the lower part 103 of the front end bumper of test vehicle 100.
The vehicle front bumper region of vehicle is simulated with fixture 200 with collision, carries out crash tests, pedestrian protection can be shortened
Entire design process.
Preferably, collision fixture 200 further includes muti-piece stiffening plate 210.The bottom of stiffening plate 210 and pedestal 201 are fixed
Connection, the side of stiffening plate 210 is fixedly connected with first support bar 202 or second support bar 203.Stiffening plate 210 is used to reinforce
The collision overall structure of fixture 200, is allowed to more firm.
Preferably, being drilled on the first energy-absorbing crossbeam 207, the second energy-absorbing crossbeam 208 and third energy-absorbing crossbeam 209 to adjust the
The rigidity of one energy-absorbing crossbeam 207, the second energy-absorbing crossbeam 208 and third energy-absorbing crossbeam 209.It is, of course, also possible to pass through change first
Energy-absorbing crossbeam 207, the second energy-absorbing crossbeam 208 and third energy-absorbing crossbeam 209 thickness or change its area of section to adjust its phase
The rigidity answered.
Fig. 3 a is the structural representation of original first energy-absorbing crossbeam, the second energy-absorbing crossbeam or third energy-absorbing crossbeam of the invention
Figure.Fig. 3 b is that the structure of the first energy-absorbing crossbeam, the second energy-absorbing crossbeam or third energy-absorbing crossbeam of the invention after adjusting rigidity is shown
It is intended to.As shown, the original material in the first energy-absorbing crossbeam 207, the second energy-absorbing crossbeam 208 and third energy-absorbing crossbeam 209 can
With identical, through-hole 211 is opened up on it to change its rigidity, with simulating vehicle front bumper region.
Preferably, returning back to Fig. 2, the first support base 204, the second support base 205 or third support base 206 are in the first support
High and low position on bar 202 and second support bar 203 is adjustable, i.e., height is adjustable.By adjusting the first support base 204,
The height of two support bases 205 or third support base 206 is inhaled with adjusting the first energy-absorbing crossbeam 207, the second energy-absorbing crossbeam 208 and third
The height of energy crossbeam 209.
Preferably, collision fixture 200 further includes nut, in the length side of first support bar 202 and second support bar 203
Multiple first mounting holes 212 are offered upwards.The two of the first support base 204, the second support base 205 and third support base 206
The second mounting hole 213 is offered on end.Nut passes through the second mounting hole 213 and the cooperation of the first mounting hole 212 is fixed, thus by the
One support base 204, the second support base 205 and third support base 206 are fixed in first support bar 202 and second support bar 203.
For example, can choose and fitted in first support bar 202 and second support bar 203 when needing to adjust the height of the first support base 204
The first mounting hole 212 for closing height is installed.Similarly, the second support base 205 and third support base 206 can also pass through this kind
Mode adjusts height.
Fig. 4 is the structural schematic diagram of collision fixture of the invention.As shown, collision fixture 200 further includes gasket
214.The gasket 214 can be arranged between the first support base 204 and first support bar 202, since gasket 214 has centainly
Thickness, therefore the position of the first energy-absorbing crossbeam 207 in the horizontal direction can be adjusted by gasket 214.Similarly, gasket 214
Any of the first support base 204, the second support base 205 and third support base 206 and first support bar can be arranged on
Between any of 202 and second support bar 203.The first energy-absorbing crossbeam 207, second is adjusted by the thickness of gasket 214
The position of energy-absorbing crossbeam 208 or third energy-absorbing crossbeam 209 in the horizontal direction.It is readily comprehensible, it can also be by same position
It sets with 214 stacked system of multiple pads and adjusts horizontal relative position.
Fig. 5 is the flow diagram of flexible leg collision test method of the invention.Fig. 6 is flexible leg impact test of the invention
The schematic diagram that the first energy-absorbing crossbeam, the second energy-absorbing crossbeam or third energy-absorbing crossbeam are hit using impactor in method.Fig. 7 is
The first energy-absorbing crossbeam, the rigidity of the second energy-absorbing crossbeam or third energy-absorbing crossbeam, height and horizontal relative position are adjusted in the present invention
Schematic diagram.Fig. 8 is the schematic diagram for hitting collision fixture in the present invention with flexible leg.As shown, provided by the invention one
Kind flexible leg collision test method 500, using collision above-mentioned fixture 200, comprising the following steps:
Step 501, design object is established, determines that the first energy-absorbing crossbeam 207, the second energy-absorbing crossbeam 208 or third energy-absorbing are horizontal
Target stiffness K 0, height and the horizontal relative position of beam 209.
Step 502, as shown in connection with fig. 6, use impactor 601 with the first setting speed come hit the first energy-absorbing crossbeam 207,
Second energy-absorbing crossbeam 208 or third energy-absorbing crossbeam 209 calculate according to the acceleration information that impactor obtains and obtain the first energy-absorbing cross
The test stiffness K 0 ' of beam 207, the second energy-absorbing crossbeam 208 or third energy-absorbing crossbeam 209.The first energy-absorbing crossbeam 207 in Fig. 6,
Two energy-absorbing crossbeams 208 or third energy-absorbing crossbeam 209 have been mounted in collision fixture 200, it is readily appreciated that, it can also adopt
Shock examination individually is carried out to the first energy-absorbing crossbeam 207, the second energy-absorbing crossbeam 208 or third energy-absorbing crossbeam 209 with impactor 601
It tests.
Step 503, compare target stiffness K 0 and test stiffness K O ', adjust the first energy-absorbing crossbeam 207, the second energy-absorbing crossbeam
208 or third energy-absorbing crossbeam 209 rigidity, make K0i'=K0i, wherein i=1,2,3.Respectively correspond the first energy-absorbing crossbeam 207
Target stiffness K 01With test stiffness K 01', the target stiffness K 0 of the second energy-absorbing crossbeam 2082With test stiffness K 02', third energy-absorbing
The target stiffness K 0 of crossbeam 2093With test stiffness K 03’。
Step 504, as shown in connection with fig. 7, assembling collision fixture 200 is packed into the first energy-absorbing crossbeam for having adjusted rigidity
207, the second energy-absorbing crossbeam 208 and third energy-absorbing crossbeam 209.Then, the height h1 of the first energy-absorbing crossbeam 207 of adjustment and horizontal phase
To position s1, wherein height h1 is from the distance of 207 bottom surface of the 201 to the first energy-absorbing of pedestal crossbeam, and horizontal relative position s1 is
One energy-absorbing crossbeam 207 protrudes from the distance of 203 side of first support bar 202 and second support bar.Adjust the second energy-absorbing crossbeam 208
Height h2 and horizontal relative position s2, wherein height h2 is from the distance of 208 bottom surface of the 201 to the second energy-absorbing of pedestal crossbeam, water
Flat relative position s2 is the distance that the second energy-absorbing crossbeam 208 protrudes from 203 side of first support bar 202 and second support bar.It adjusts
The height h3 and horizontal relative position s3 of whole third energy-absorbing crossbeam 209, wherein height h3 is from pedestal 201 to third energy-absorbing crossbeam
The distance of 209 bottom surfaces, horizontal relative position s3 are that third energy-absorbing crossbeam 209 protrudes from first support bar 202 and second support bar
The distance of 203 sides.Conventional, between height h1 and height h3, horizontal relative position s2 is greater than horizontal opposite height h2
Position s1 and horizontal relative position s3 makes 200 simulating vehicle front bumper region of collision fixture.
Step 505, it with reference to Fig. 8, is collided from left to right to hit with folder with the second setting speed with flexible leg 104 along paper
Tool 200 adjusts the first energy-absorbing crossbeam 207, the second energy-absorbing crossbeam 208 or the according to the testing result of the sensor of flexible leg 104
Rigidity, height or the horizontal relative position of three energy-absorbing crossbeams 209 are to meet design object.In fact, the step 505 can be repeatedly
It carries out, until testing stiffness K O ' close to target stiffness K 0.
Preferably, the second setting speed in the first setting speed and step 505 in step 502 is 35~42km/h
(kilometer/hour), more preferably, the two are set as 40km/h.
Preferably, in step 503 in the first energy-absorbing crossbeam 207, the second energy-absorbing crossbeam 208 or third energy-absorbing crossbeam 209
It is upper to drill to adjust the rigidity of the first energy-absorbing crossbeam 207, the second energy-absorbing crossbeam 208 or third energy-absorbing crossbeam 209.In addition to drill with
Outside, the first energy-absorbing crossbeam can also be corrected by changing the material thickness of the first energy-absorbing crossbeam 207 or changing its area of section
207 rigidity.Similarly it is suitable for the second energy-absorbing crossbeam 208 and third energy-absorbing crossbeam 209.
Preferably, as shown in connection with fig. 4, the collision fixture 200 used in flexible leg collision test method 500 further includes
Gasket 214.Any of the first support base 204, the second support base 205 and third support base 206 and is arranged in gasket 214
Between any of one support rod 202 and second support bar 203, to adjust the first energy-absorbing crossbeam 207, in step 504
The position of two energy-absorbing crossbeams 208 or third energy-absorbing crossbeam 209 in the horizontal direction.
A kind of flexible leg collision test method provided by the invention and collision fixture, it is intended to be simulated with collision fixture whole
The front bumper collision area of vehicle avoids automobile factory during automobile research because automotive bumper mold sample cannot be complete in time
Work or the modification high-cost limitation of mold, the test of flexible leg collision vehicle is completed using the collision clamp instead, can be effective
The design cycle for shortening pedestrian protection reduces the experimentation cost of early development, improves design efficiency.
Those skilled in the art can be obvious, the above exemplary embodiments of the invention can be carry out various modifications and modification and
Without departing from the spirit and scope of the present invention.Accordingly, it is intended to which present invention covering is made to fall in the appended claims and its equivalence techniques
Modifications of the present invention and modification in aspects.
Claims (10)
1. a kind of collision fixture, including,
Pedestal；
First support bar and second support bar, are vertically arranged on the base；
First support base, both ends are separately fixed in the first support bar and second support bar, in first support base
It is equipped with the first energy-absorbing crossbeam；
Second support base, both ends are separately fixed in the first support bar and second support bar, in second support base
It is equipped with the second energy-absorbing crossbeam；
Third support base, both ends are separately fixed in the first support bar and second support bar, in the third support base
It is equipped with third energy-absorbing crossbeam；
Wherein, the first energy-absorbing crossbeam, the second energy-absorbing crossbeam and third energy-absorbing crossbeam are horizontally disposed, the first energy-absorbing crossbeam
Positioned at the top of the second energy-absorbing crossbeam, the third energy-absorbing crossbeam is located at the lower section of the second energy-absorbing crossbeam.
2. collision fixture as described in claim 1, which is characterized in that further include muti-piece stiffening plate, the bottom of the stiffening plate
Portion is fixedly connected with the base, and the side of the stiffening plate is fixedly connected with the first support bar or second support bar.
3. collision fixture as described in claim 1, which is characterized in that in the first energy-absorbing crossbeam, the second energy-absorbing crossbeam
Or it is drilled on third energy-absorbing crossbeam to adjust the rigidity of the first energy-absorbing crossbeam, the second energy-absorbing crossbeam or third energy-absorbing crossbeam.
4. collision fixture as claimed in claim 3, which is characterized in that first support base, the second support base or third
High and low position of the support base in the first support bar and second support bar is adjustable, to adjust the first energy-absorbing crossbeam,
Two energy-absorbing crossbeams or the horizontal depth of beam of third energy-absorbing.
5. collision fixture as claimed in claim 4, which is characterized in that further include nut, in the first support bar and the
Multiple first mounting holes are offered on two support rods, are offered in first support base, the second support base and third support base
Second mounting hole, the nut pass through first mounting hole and the second mounting hole for first support base, the second support base
It is fixed in the first support bar and second support bar with third support base.
6. collision fixture as described in claim 1, which is characterized in that further include gasket, the gasket setting is described the
Any of one support base, the second support base and third support base and any in the first support bar and second support bar
Between a, to adjust the first energy-absorbing crossbeam, the opposite position of the second energy-absorbing crossbeam or third energy-absorbing crossbeam in the horizontal direction
It sets.
7. a kind of flexible leg collision test method, using collision fixture as described in claim 1, comprising steps of
The first step establishes design object, determines the target of the first energy-absorbing crossbeam, the second energy-absorbing crossbeam or third energy-absorbing crossbeam
Rigidity, height and horizontal relative position；
Second step uses impactor to hit the first energy-absorbing crossbeam, the second energy-absorbing crossbeam or third with the first setting speed
Energy-absorbing crossbeam calculates according to the acceleration information that the impactor obtains and obtains the first energy-absorbing crossbeam, the second energy-absorbing crossbeam
Or the test rigidity of third energy-absorbing crossbeam；
Third step compares target rigidity and test rigidity, adjusts the first energy-absorbing crossbeam, the second energy-absorbing crossbeam or third energy-absorbing
The rigidity of crossbeam；
4th step assembles the collision fixture, is packed into the first energy-absorbing crossbeam, the second energy-absorbing crossbeam for having adjusted rigidity
Or third energy-absorbing crossbeam；Adjust the first energy-absorbing crossbeam, the second energy-absorbing crossbeam or the horizontal depth of beam of third energy-absorbing；Described in adjustment
The horizontal relative position of first energy-absorbing crossbeam, the second energy-absorbing crossbeam or third energy-absorbing crossbeam；
5th step hits the collision fixture with flexible leg with the second setting speed, according to the sensor of the flexible leg
Testing result, adjust rigidity, height or the horizontal phase of the first energy-absorbing crossbeam, the second energy-absorbing crossbeam or third energy-absorbing crossbeam
To position to meet the design object.
8. flexible leg collision test method as claimed in claim 7, which is characterized in that first setting speed and described
Two setting speeds are 35~42km/h.
9. flexible leg collision test method as claimed in claim 7, which is characterized in that in the third step in first energy-absorbing
Its area of section is drilled, changes its thickness or changed on crossbeam, the second energy-absorbing crossbeam or third energy-absorbing crossbeam to adjust described
The rigidity of one energy-absorbing crossbeam, the second energy-absorbing crossbeam or third energy-absorbing crossbeam.
10. flexible leg collision test method as claimed in claim 7, which is characterized in that it further include gasket, the gasket setting
In any of first support base, the second support base and third support base and the first support bar and second support bar
Any of between, existed with adjusting the first energy-absorbing crossbeam, the second energy-absorbing crossbeam or third energy-absorbing crossbeam in the 4th step
Position in horizontal direction.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110202723A (en) * | 2019-05-29 | 2019-09-06 | 北京长城华冠汽车技术开发有限公司 | Chinese herbaceous peony bumper preparation method, Chinese herbaceous peony bumper and vehicle with protection pedestrian |
| CN111157212A (en) * | 2020-01-06 | 2020-05-15 | 重庆长安汽车股份有限公司 | Thigh bone angle adjusting device and method of pedestrian protection thigh impactor |
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