CN110017789A - Vehicle collision deforming depth measuring device - Google Patents
Vehicle collision deforming depth measuring device Download PDFInfo
- Publication number
- CN110017789A CN110017789A CN201910221002.6A CN201910221002A CN110017789A CN 110017789 A CN110017789 A CN 110017789A CN 201910221002 A CN201910221002 A CN 201910221002A CN 110017789 A CN110017789 A CN 110017789A
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- drive shaft
- gear
- telescopic rod
- block
- transverse slider
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/22—Measuring arrangements characterised by the use of optical techniques for measuring depth
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The present invention relates to traffic accident identification technology fields, disclose a kind of vehicle collision deforming depth measuring device, pedestal (1) is horizontal positioned, and guide upright post (2) is vertically fixed on pedestal (1)；One end of longitudinal sliding block (3) is movably connect with guide upright post (2) by longitudinal adjusting mechanism, and one end of transverse slider (4) is movably connect by lateral adjustment with the other end of longitudinal sliding block (3)；One end of telescopic rod (5) is movably connect by expansion regulating mechanism with the other end of transverse slider (4), one end of axial rotating block (6) and the other end of telescopic rod (5) are rotatablely connected, and the other end of radial rotating block (71) and axial rotating block (6) in measuring mechanism (7) is rotatablely connected.The present invention is capable of the depth of the more convenient impact marks for quickly measuring different heeling conditions.
Description
Technical field
The present invention relates to traffic accident identification technology field, in particular to a kind of vehicle collision deforming depth measuring device.
Background technique
The depth measurement problem occurred at present for machining complex parts (such as car crust, mold etc.), always
It is the difficult point of manufacturing enterprise, the still not no measuring tool of standard forming, though common vernier caliper has the function of fathoming,
Complicated concave curvature depth of inner cavity measurement can not be carried out, other types of measuring tool is also difficult to be competent at.Therefore, it sends out
A kind of bright complicated concave curvature depth of inner cavity measuring scale is the task of top priority.
In recent years, frequent accidents occur, and vehicle collision deforming depth is the important evidence for identifying traffic accident, pass through
Collision deformation depth is measured, in conjunction with computer technology, the process that collision occurs can be simulated.However collision deformation section is usual
It is to measure collision-deformed depth with certain gradient, is difficult adjustment using traditional handheld measuring device and touches
The verticality for hitting section, making measurement result, there are biggish errors, or even can not measure.
Summary of the invention
Goal of the invention: aiming at the problems existing in the prior art, the present invention provides a kind of vehicle collision deforming depth measurement
Device is capable of the depth of the more convenient impact marks for quickly measuring different heeling conditions.
Technical solution: the present invention provides a kind of vehicle collision deforming depth measuring device, including pedestal, guide upright post,
Longitudinal sliding block, transverse slider, telescopic rod, axial rotating block and measuring mechanism, the pedestal is horizontal positioned, and the guide upright post hangs down
It is straight to fix on the base；One end of the longitudinal sliding block is movably connect with the guide upright post by longitudinal adjusting mechanism,
One end of the transverse slider is movably connect by lateral adjustment with the other end of the longitudinal sliding block；The telescopic rod
One end is movably connect by expansion regulating mechanism with the other end of the transverse slider, one end of the axial rotating block with it is described
The other end of telescopic rod is rotatablely connected, and the other end of radial rotating block and the axial rotating block in the measuring mechanism rotates
Connection.
Preferably, the guide upright post is equipped with first gear teeth, and the longitudinal sliding block covers on the guide upright post, described
Longitudinal adjusting mechanism is fixed on institute by first gear, the first drive shaft and the first stepping motor form, first stepper motor
It states on longitudinal sliding block, the first gear is coaxially mounted in first drive shaft, the output shaft of first stepper motor
Be fixedly connected with first drive shaft, the first gear and first gear teeth meshing, first drive shaft with it is described
Guide upright post is vertically arranged.When needing to adjust position of the longitudinal sliding block on guide upright post, the first stepper motor passes through first
Drive shaft driving first gear rotates on first gear teeth, to realize that longitudinal sliding block moves up and down on guide upright post.
Preferably, one end end that the longitudinal sliding block is movably connect with the transverse slider is hollow structure, this is hollow
The rolling wheel guide rails parallel with the moving direction of the transverse slider are arranged in structure inner bottom surface, and the transverse slider and the longitudinal direction are sliding
Second gear teeth parallel with the rolling wheel guide rails are arranged in one end upper surface that block movably connects；Include in the lateral adjustment
Second stepper motor, the second drive shaft, second gear and several idler wheels, the second gear are coaxially mounted to second driving
On axis, the second gear and second gear teeth meshing, the output shaft of the second stepper motor and second drive shaft
It is fixedly connected, the second stepper motor is fixed on the longitudinal sliding block, and each idler wheel is successively horizontally arranged and the company of rotation
It connects in the bottom surface of the transverse slider, and each idler wheel is rolled with the rolling wheel guide rails and connected.It is laterally sliding when needing to adjust
Block along longitudinal direction sliding block one end be moved forward and backward when, second stepper motor by the second drive shaft drive second gear in second gear teeth
Upper rotation so that each idler wheel of transverse slider bottom be driven to roll on rolling wheel guide rails, and then realizes transverse slider in longitudinal cunning
Block one end is moved forward and backward.
Preferably, one end that the transverse slider and the telescopic rod are movably connect is hollow structure, in the hollow structure
Bottom surface is equipped with the slide rail parallel with the telescopic direction of the telescopic rod, and the bottom of the telescopic rod and the transverse slider are logical
It crosses the slide rail to be slidably connected, and the third gear teeth parallel with the slide rail are arranged in the upper surface of the telescopic rod；
It include regulation handle, third drive shaft and third gear, the regulation handle and the third drive shaft in expansion regulating mechanism
It is fixedly connected, the third drive shaft is rotatably connected on the transverse slider by bearing, and the third gear is co-axially mounted
In the third drive shaft and with the third gear teeth meshing.When needing to adjust the collapsing length of telescopic rod, rotate manually
Regulation handle, regulation handle drive third gear to rotate on the third gear teeth by third drive shaft, and then drive telescopic rod edge
Slide rail sliding, to realize the back-and-forth motion of telescopic rod.
Preferably, one end of the axial rotating block and the other end of the telescopic rod are turned by the first switch block fixing bolt
Dynamic connection, the first switch block fixing bolt are arranged in parallel with the guide upright post.When needing to adjust axial rotating block, by its around
The rotation of first switch block fixing bolt.
Preferably, the other end of the radial rotating block and the axial rotating block is rotated by the second switch block fixing bolt
Connection, the second switch block fixing bolt are vertically arranged with the guide upright post.When needing to adjust radial rotating block, by it around
The rotation of two switch block fixing bolts.
It further, further include verticality measuring instrument and laser measuring apparatus, the squareness measurement in the measuring mechanism
Instrument and the laser measuring apparatus are separately fixed on the radial rotating block, and the probe of the two is located at same horizontal line.Pass through
Observation verticality measuring instrument reading can the verticality at any time to verticality measuring instrument and impact marks to be measured detect,
To adjust in time, the probe of verticality measuring instrument and laser measuring apparatus on the same line, when the probe of verticality measuring instrument
Vertical with impact marks to be measured, then the probe of laser measuring apparatus is also vertical with impact marks to be measured, easy to adjust, guarantees measurement number
According to accuracy.
Further, read-out display is also separately installed on the verticality measuring instrument and the laser measuring apparatus.It reads
The setting of number display facilitates user to read.
The utility model has the advantages that in present invention, it is desirable to first having to when being measured to the depth of impact marks to be measured in impact marks
Section on rectangle frame choosing include entire impact marks to be measured including range, then slided by longitudinal adjusting mechanism driving longitudinal direction
Block moves up and down any vertex of highest point that the measuring probe into measuring mechanism reaches rectangle selection range along guide upright post,
Then the telescopic rod measuring probe that transversely sliding block moves left and right measuring mechanism is driven to touch with to be measured by expansion regulating mechanism
The section contact for hitting trace, then by adjusting the radial rotating block in axial rotating block and measuring mechanism, makes measuring mechanism
Measuring probe is vertical with the section of impact marks to be measured, then drives transverse slider to move forward forward by lateral adjustment, horizontal
The reading that measuring mechanism measures is read when to sliding block when mobile, until the measuring probe and selection range in measuring mechanism
EDGE CONTACT；Then after moving down the default spacing of longitudinal sliding block again by longitudinal adjusting mechanism, again by lateral adjustments
Mechanism moves backward transverse slider, the reading that measuring mechanism measures is read when transverse slider is when mobile, until measuring mechanism
In measuring probe and selection range another side edge contact；It is iteratively repeated above-mentioned movement, until entire rectangle selection range
It is measured and finishes.
As it can be seen that the longitudinal sliding block, transverse slider, telescopic rod, axial rotating block in the present apparatus and the setting for longitudinally rotating block,
Enable measuring mechanism in the present apparatus up and down, the movement in former and later two directions, and can be in upper and lower, left and right both direction
With revolute pair, the impact marks depth to be measured with different heeling conditions is realized by axial rotating block and radial rotating block
Measurement, it is versatile.
Detailed description of the invention
Fig. 1 is the structural front view of vehicle collision deforming depth measuring device in the present invention；
Fig. 2 is the structure top view of vehicle collision deforming depth measuring device in the present invention；
Fig. 3 is the structure top view of measuring mechanism；
Fig. 4 is the structural front view of the transverse slider with idler wheel and second gear teeth；
Fig. 5 is the right view of Fig. 4；
Fig. 6 is the cross-sectional view in Fig. 1 in dotted line frame I；
Fig. 7 is the cross-sectional view in Fig. 1 in dotted line frame II；
Fig. 8 is the cross-sectional view in Fig. 1 in dotted line frame III；
Fig. 9 is the cross-sectional view in Fig. 2 in dotted line frame IV.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawing.
Present embodiments provide for a kind of vehicle collision deforming depth measuring devices, as shown in Figure 1 to 9, mainly by pedestal
1, guide upright post 2, longitudinal sliding block 3, transverse slider 4, telescopic rod 5, axial rotating block 6 and measuring mechanism 7 form, and pedestal 1 is horizontal
It places, rectangular-shaped guide upright post 2 is fixed on pedestal 1 by the way that column fixing bolt 18 is vertically-mounted, left side setting first
The gear teeth 21；Longitudinal sliding block 3 is set on guide upright post 2, and the left end of longitudinal sliding block 3 passes through longitudinal adjusting mechanism and guide upright post 2
Movable connection；Above-mentioned longitudinal adjusting mechanism is mainly vertically arranged by first gear 20, the first stepper motor 8 and with guide upright post 2
The first drive shaft 9 composition, the first stepper motor 8 is fixed on longitudinal sliding block 3, output shaft and the fixed company of the first drive shaft 9
It connects, first gear 20 is coaxially mounted in the first drive shaft 9, and first gear 20 is engaged with first gear teeth 21.
The right end of longitudinal sliding block 3 is movably connect by lateral adjustment with the left end of transverse slider 4；Longitudinal sliding block 3 is in T
Shape opens up through-hole of T shape hollow structure, the setting of through-hole inner bottom surface and the transverse direction of T shape hollow structure in long side one end (right end)
The parallel rolling wheel guide rails (not shown) of the moving direction of sliding block 4, the left end upper surface setting of transverse slider 4 and rolling wheel guide rails
The second parallel gear teeth 19；The above-mentioned lateral adjustment is mainly by second stepper motor 12, the second drive shaft 11, second gear
10 and several idler wheels 28 form, second stepper motor 12 is fixed on longitudinal sliding block 3, output shaft and the fixation of the second drive shaft 11
Connection, second gear 10 are coaxially mounted in the second drive shaft 11 by key 22, and second gear 10 is engaged with second gear teeth 19, respectively
Idler wheel 28 is successively horizontally arranged and is rotatably connected on the bottom surface of transverse slider 4 by a roller shaft 25 respectively, and each idler wheel 28
It rolls and connects with rolling wheel guide rails.
The left end that transverse slider 4 is movably connect with the right end of longitudinal sliding block 3 is solid construction, and the left end with telescopic rod 5 can
The right end of dynamic connection is hollow structure, which is equipped with the slide rail parallel with the telescopic direction of telescopic rod 5
24, the bottom of telescopic rod 5 is slidably connected with transverse slider 4 by slide rail 24, and the upper surface setting and sliding of telescopic rod 5
The parallel third gear teeth 23 of guide rail 24；Expansion regulating mechanism is mainly by regulation handle 17, third drive shaft 13 and third gear 26
Composition, regulation handle 17 are fixedly connected with third drive shaft 13, and third drive shaft 13 is rotatably connected on transverse slider 4 by bearing
On, third gear 26 is coaxially mounted to engage in third drive shaft 13 and with the third gear teeth 23.
5 right end of extension bar opens up rectangular straight slot, installs axial rotating block 6 in through slot, axial rotating block 6 and extension bar 5 it
Between connected by the first switch block fixing bolt 16, fixed by tightening switch block fixture nut 14, axial rotating block 6 can be around first turn
The axis of block fixing bolt 16 rotates；The right end of axial rotating block 6 equally offers rectangular straight slot, installs measuring mechanism in through slot
7, measuring mechanism 7 is mainly made of radial rotating block 71, verticality measuring instrument 72 and laser measuring apparatus 75, radial rotating block 71
Left end is connected by the second switch block fixing bolt 15, and fixed by tightening measuring mechanism fixture nut 27, radial rotating block 71 can
Axis around the second switch block fixing bolt 15 rotates；Verticality measuring instrument 72 and laser measuring apparatus 75 are separately fixed at radial rotating
The right end of block 71, and the probe (number is respectively 74 and 77) of the two is located at same horizontal line, verticality measuring instrument 72 and laser
Verticality measuring instrument display 73 and laser measuring apparatus display 76 are also separately installed on measuring instrument 75.
Measurement method: it for surveying from top to bottom, needs vertically to handle 7 school of measuring mechanism before measurement:
First on the section 30 of the impact marks to be measured 31 of collision object 29 with the rectangle frame choosing of erasable comprising entirely to
The range including impact marks 31 is surveyed, the first stepper motor 8 is opened, drives first gear 20 along first by the first drive shaft 9
The gear teeth 21 roll, so that longitudinal sliding block 3 be driven to move upwards, longitudinal sliding block 3 drives transverse slider 4, telescopic rod 5, axial rotation
Block 6 and measuring mechanism 7 move up, until the probe 74 and laser measuring apparatus 75 of verticality measuring instrument 72 in measuring mechanism 7
Probe 77 all reaches any apex angle of rectangle selection range highest point, then shakes regulation handle 17, passes through third drive shaft 13
Third gear 26 is driven to roll along the third gear teeth 23, to drive telescopic rod 5 to move to right along slide rail 24, to drive axial rotation
Block 6 and measuring mechanism 7 move to right, until probe 74 and the impact marks 31 to be measured of the verticality measuring instrument 72 in measuring mechanism 7
Section 30 contacts, and observes the reading of verticality measuring instrument display 73, then adjusts axial rotating block 6 and radial rotating block 71,
Until the reading of verticality measuring instrument display 73 is 90 degree, show the probe 77 of laser measuring apparatus and cutting for impact marks 31 to be measured
Face 30 vertically (due to verticality measuring instrument 72 probe 74 and laser measuring apparatus 75 probe 77 in the same horizontal line,
When the probe 74 of verticality measuring instrument 72 touches the section 30 of impact marks 31 to be measured, the probe 77 of laser measuring apparatus 75 is also connect
Contact the section 30 of impact marks 31 to be measured, this process is the process to return to zero to laser measuring apparatus 75, then passes through later
The depth value that laser measuring apparatus 75 is measured is the actual depth value of impact marks 31 to be measured).
Then start to be tested: closing the first stepper motor 8, open second stepper motor 12, pass through the second drive shaft
11 driving second gears 10 are rotated along second gear teeth 19, and then transverse slider 4 is driven to move forward, and side moves forward transverse slider
4, the reading on laser measuring apparatus display 76 is read on side, until the probe 77 of laser measuring apparatus 75 and rectangle selection range
It contacts on one side, is then shut off second stepper motor 12；The first stepper motor 8 is opened, first gear is driven by the first drive shaft 9
20 rotate along first gear teeth 21, and to drive longitudinal sliding block 3 to move down a fixed spacing, (spacing can appoint according to specific measurement accuracy
Meaning selection, spacing selection is smaller, and measurement accuracy is more accurate), it is then again switched off the first stepper motor 8, opens the second stepping electricity
Machine 12 drives second gear 10 to rotate along second gear teeth 19 by the second drive shaft 11, and then drives transverse slider 4 (anti-backward
To) mobile, side moves backward transverse slider 4, and the reading on laser measuring apparatus display 76 is read on side, until laser measuring apparatus
The side opposite with the other side of rectangle selection range of probe 77 contact.
Aforesaid operations are repeated, until measuring complete rectangle selection range, that is, complete entire collision trace to be measured
The depth value of mark 31 is tested.
The technical concepts and features of above embodiment only to illustrate the invention, its object is to allow be familiar with technique
People cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
The equivalent transformation or modification that Spirit Essence is done, should be covered by the protection scope of the present invention.
Claims (8)
1. a kind of vehicle collision deforming depth measuring device, which is characterized in that sliding including pedestal (1), guide upright post (2), longitudinal direction
Block (3), transverse slider (4), telescopic rod (5), axial rotating block (6) and measuring mechanism (7), the pedestal (1) is horizontal positioned, institute
Guide upright post (2) is stated to be vertically fixed on the pedestal (1)；One end and the guide upright post (2) of the longitudinal sliding block (3) are logical
It crosses longitudinal adjusting mechanism movably to connect, one end of the transverse slider (4) passes through lateral adjustment and the longitudinal sliding block (3)
The other end movably connect；One end of the telescopic rod (5) passes through the other end of expansion regulating mechanism and the transverse slider (4)
Movable connection, one end of the axial direction rotating block (6) and the other end of the telescopic rod (5) are rotatablely connected, the measuring mechanism
(7) other end of radial rotating block (71) and the axial rotating block (6) in is rotatablely connected.
2. vehicle collision deforming depth measuring device according to claim 1, which is characterized in that the guide upright post (2)
It is equipped with first gear teeth (21), the longitudinal sliding block (3) covers on the guide upright post (2), and the longitudinal adjusting mechanism is by the
One gear (20), the first drive shaft (9) and the first stepper motor (8) composition, first stepper motor (8) are fixed on described vertical
To on sliding block (3), the first gear (20) is coaxially mounted on first drive shaft (9), first stepper motor (8)
Output shaft be fixedly connected with first drive shaft (9), the first gear (20) is engaged with first gear teeth (21), institute
The first drive shaft (9) is stated to be vertically arranged with the guide upright post (2).
3. vehicle collision deforming depth measuring device according to claim 1, which is characterized in that the longitudinal sliding block (3)
It is hollow structure, hollow structure inner bottom surface setting and the transverse direction with one end end that the transverse slider (4) is movably connect
The parallel rolling wheel guide rails of the moving direction of sliding block (4), the transverse slider (4) movably connect with the longitudinal sliding block (3) one
Hold upper surface that second gear teeth (19) parallel with the rolling wheel guide rails are set；It include the second stepping electricity in the lateral adjustment
Machine (12), the second drive shaft (11), second gear (10) and several idler wheels (28), the second gear (10) are coaxially mounted to institute
It states on the second drive shaft (11), the second gear (10) is engaged with second gear teeth (19), the second stepper motor
(12) output shaft is fixedly connected with second drive shaft (11), and the second stepper motor (12) is fixed on described longitudinal sliding
On block (3), each idler wheel (28) is successively horizontally arranged and is rotatably connected on the bottom surface of the transverse slider (4), and each described
Idler wheel (28) is rolled with the rolling wheel guide rails and is connected.
4. vehicle collision deforming depth measuring device according to claim 1, which is characterized in that the transverse slider (4)
It is hollow structure with one end that the telescopic rod (5) is movably connect, which is equipped with and the telescopic rod (5)
It is led with the transverse slider (4) by the sliding bottom of the parallel slide rail of telescopic direction (24), the telescopic rod (5)
Rail (24) is slidably connected, and the third gear teeth parallel with the slide rail (24) are arranged in the upper surface of the telescopic rod (5)
(23)；It include regulation handle (17), third drive shaft (13) and third gear (26), the regulation handle in expansion regulating mechanism
(17) it is fixedly connected with the third drive shaft (13), the third drive shaft (13) is rotatably connected on the transverse direction by bearing
On sliding block (4), the third gear (26) be coaxially mounted on the third drive shaft (13) and with the third gear teeth (23)
Engagement.
5. vehicle collision deforming depth measuring device according to claim 1, which is characterized in that the axial direction rotating block
(6) other end of one end and the telescopic rod (5) is rotatablely connected by the first switch block fixing bolt (16), first switch block
Fixing bolt (16) is arranged in parallel with the guide upright post (2).
6. vehicle collision deforming depth measuring device according to claim 1, which is characterized in that the radial rotating block
(71) other end with the axial rotating block (6) is rotatablely connected by the second switch block fixing bolt (15), second switch block
Fixing bolt (15) is vertically arranged with the guide upright post (2).
7. vehicle collision deforming depth measuring device according to any one of claim 1 to 6, which is characterized in that described
It further include verticality measuring instrument (72) and laser measuring apparatus (75) in measuring mechanism (7), the verticality measuring instrument (72) and institute
It states laser measuring apparatus (75) to be separately fixed on the radial rotating block (71), and the probe of the two is located at same horizontal line.
8. vehicle collision deforming depth measuring device according to claim 7, which is characterized in that the verticality measuring instrument
(72) and on the laser measuring apparatus (75) also it is separately installed with read-out display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910221002.6A CN110017789B (en) | 2019-03-22 | 2019-03-22 | Vehicle collision deformation depth measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910221002.6A CN110017789B (en) | 2019-03-22 | 2019-03-22 | Vehicle collision deformation depth measuring device |
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| Publication Number | Publication Date |
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| CN110017789A true CN110017789A (en) | 2019-07-16 |
| CN110017789B CN110017789B (en) | 2020-12-04 |
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ID=67189857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910221002.6A Active CN110017789B (en) | 2019-03-22 | 2019-03-22 | Vehicle collision deformation depth measuring device |
Country Status (1)
| Country | Link |
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| CN (1) | CN110017789B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111551125A (en) * | 2019-12-04 | 2020-08-18 | 西华大学 | Novel auxiliary vehicle collision deformation measuring device and deformation measuring method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111551125A (en) * | 2019-12-04 | 2020-08-18 | 西华大学 | Novel auxiliary vehicle collision deformation measuring device and deformation measuring method |
| CN111649686A (en) * | 2019-12-04 | 2020-09-11 | 西华大学 | High-precision vehicle collision deformation measuring method |
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| CN111649686B (en) * | 2019-12-04 | 2021-06-22 | 西华大学 | High-precision vehicle collision deformation measuring method |
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| Publication number | Publication date |
|---|---|
| CN110017789B (en) | 2020-12-04 |
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Application publication date: 20190716 Assignee: JIANGSU HUAIGONG VEHICLE DETECTION RESEARCH INSTITUTE Co.,Ltd. Assignor: HUAIYIN INSTITUTE OF TECHNOLOGY Contract record no.: X2021980011017 Denomination of invention: Vehicle collision deformation depth measuring device Granted publication date: 20201204 License type: Common License Record date: 20211020 |