CN111307471B - Transmitting frame of novel leg type impactor for pedestrian protection aPLI - Google Patents
Transmitting frame of novel leg type impactor for pedestrian protection aPLI Download PDFInfo
- Publication number
- CN111307471B CN111307471B CN202010167339.6A CN202010167339A CN111307471B CN 111307471 B CN111307471 B CN 111307471B CN 202010167339 A CN202010167339 A CN 202010167339A CN 111307471 B CN111307471 B CN 111307471B
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- pedestrian protection
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- 210000002414 leg Anatomy 0.000 claims abstract description 68
- 238000012360 testing method Methods 0.000 claims abstract description 22
- 210000000689 upper leg Anatomy 0.000 claims abstract description 10
- 210000003127 knee Anatomy 0.000 claims abstract description 9
- 210000001699 lower leg Anatomy 0.000 claims abstract description 9
- 230000005484 gravity Effects 0.000 claims abstract 2
- 230000005540 biological transmission Effects 0.000 claims description 15
- 244000309466 calf Species 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 210000003141 lower extremity Anatomy 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 210000003689 pubic bone Anatomy 0.000 description 2
- 208000018982 Leg injury Diseases 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 210000000629 knee joint Anatomy 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012502 risk assessment Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 210000002303 tibia 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Professional, Industrial, Or Sporting Protective Garments (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a transmitting frame of a novel leg type impactor for pedestrian protection aPLI, which comprises a transmitting frame body, wherein an upper hook plate is arranged on the transmitting frame body, a push plate is arranged in front of the transmitting frame body, a shaft hole is formed in the center of gravity of the transmitting frame body, a connecting piece is fixedly arranged in the shaft hole, the transmitting frame body is installed with a propeller of a pedestrian protection test system through the connecting piece, the upper end of the transmitting frame body is in an inner concave shape, the upper hook plate is inserted into a gap of an upper body mass block of the aPLI novel leg type impactor, the thigh, the knee and the shank of the aPLI novel leg type impactor are close to the push plate, a clamping plate extending forwards is further arranged below the push plate, and the clamping plate can clamp two sides of the shank. The launching frame of the novel leg type impactor for pedestrian protection aPLI can realize the test function of the novel advanced leg type impactor aPLI and meet all requirements of the leg type in the flight impact process in the standard.
Description
Technical Field
The invention belongs to the technical field of automobile testing, and particularly relates to a launching frame of a novel leg type impactor for pedestrian protection aPLI.
Background
The pedestrian protection of an automobile is one of important projects focused on in the automobile safety field, and is mainly characterized in that the injury value evaluation is carried out by simulating various impactors of a human body to acquire data of an automobile front end structure of a high-speed impact collision. The global technical regulations for pedestrian protection have replaced the previous rigid leg Type (TRL) with a flexible leg type (Flex-PLI) from 2016, and the Flex-PLI leg type reflects the change of the human leg when impacted and the injury situation from three parts of femur, knee joint and tibia respectively, so that the accuracy is greatly improved. However, in practice there are still significant limitations to the Flex-PLI leg types. When the vehicle collides with the human body, the human body moves cooperatively, and the upper part of the human body has obvious influence on the lower limbs, so that the impact device is designed by considering the influence of the upper part of the human body on the lower limbs, and the risk assessment on the leg injuries can be better performed. Currently, ISO proposes a new test tool aPLI (advanced pedestrian leg-type impactor) that combines upper and lower leg types. Under the same test condition, the bone bending moment and the ligament elongation are increased to different degrees, so that the injury value of the lower limb is reflected more truly and accurately.
In the pedestrian protection test item of European NEW CAR ASSESSMENT Program (hereinafter referred to as European-NCAP) European new vehicle evaluation procedure, the leg test part has determined that aPLI is selected as a new leg impactor. Since aPLI is not yet commonly used in China, the impactor launcher is designed and debugged in the Flex-PLI leg type, so that a new launcher matching aPLI needs to be developed by self. In this context, an impactor launcher that fits aPLI legs is an urgent issue.
Disclosure of Invention
In view of this, the present invention aims to propose a launching cradle of a new leg-type impactor for pedestrian protection aPLI, which is capable of implementing the test function of the totally new advanced leg-type impactor aPLI and meeting all the requirements in the standard for the leg type during a flight impact.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
The utility model provides a transmission frame of pedestrian protection aPLI new leg type impacter, including the transmission frame body, be provided with on the transmission frame body and collude the board, be provided with the push pedal in front of transmission frame body, the focus department of transmission frame body is opened there is the shaft hole, the fixed connecting piece that is provided with in shaft hole department, the transmission frame body passes through the connecting piece and the propeller installation of pedestrian protection test system, the upper end of transmission frame body is inside sunken shape, go up the space of colludeing the upper body piece of the new leg type impacter of board insertion aPLI, the thigh of the new leg type impacter of aPLI, knee and shank lean on tightly with the push pedal, still be provided with the grip block that stretches out forward below the push pedal, the grip block can press from both sides tight shank.
Further, the launching frame body comprises two parallel side plates which are arranged at intervals, the two side plates are fixedly connected through a connecting plate, a push plate is arranged in front of the two side plates, the vertical direction of the push plate is arranged, the distance between the push plate and the launching frame body is adjustable, a supporting plate is vertically arranged on the launching frame body and located at the position between the upper hook plate and the push plate, and the supporting plate is more back than the push plate, and after the launching frame body is matched with a aPLI new leg type impactor, the supporting plate is tightly abutted to the rear end metal of the upper mass block.
Further, the back side of the support plate is fixedly connected with the side plate through an adhesive.
Further, the push pedal rear panel is provided with the mounting panel perpendicularly, and the mounting panel is located the inboard of curb plate, and mounting panel horizontal direction is provided with the slotted hole, is provided with the bolt hole on the curb plate, and the bolt passes bolt hole and slotted hole and realizes the fixed in position of push pedal and curb plate.
Further, the push plate comprises an upper push plate, a middle push plate and a lower push plate, and the upper push plate, the middle push plate and the lower push plate respectively correspond to the thigh, the knee and the shank of the aPLI new-leg type impactor.
Further, the clamping plates are respectively and fixedly arranged on two sides of the lower pushing plate.
Further, the relative position of the side plates is provided with a shaft hole, one side of the connecting piece, which is connected with the transmitting frame body, is provided with a clamping block and a clamping plate, the clamping block is positioned between the two vertical clamping plates, the clamping block is positioned between the two side plates, the clamping plates are respectively positioned outside the side plates, the shaft penetrates through the clamping block, the shaft hole and the clamping plate to realize the fixed connection of the side plates and the connecting piece, the connecting piece is provided with a connecting block at the back, and the connecting block is provided with a mounting hole connected with a propeller of the pedestrian protection test system.
Further, a reinforcing plate is arranged between the side plates.
Further, a plurality of round holes are formed in the side plates to reduce weight.
Firstly, the launching frame is fixedly installed and connected with a propeller of a pedestrian protection test system through a connecting piece, and because a shaft is arranged between the connecting piece and a side plate of the launching frame, the connecting piece and the launching frame are in a rotatable relation, and then an upper hook plate of the launching frame is inserted into a gap of an upper mass block of a aPLI new leg type impactor, and the launching frame is in a natural vertical state.
The far end of the upper hook plate is inclined upwards (namely, a certain included angle is formed between the upper hook plate and the horizontal plane), so that the launching frame can be ensured to droop freely.
To ensure the aPLI legs are absolutely vertical, the uppermost support plate of the launcher is zero-affixed and supports aPLI pubic bone. Meanwhile, the upper push plate, the middle push plate and the lower push plate respectively support push blocks at the rear ends of thighs, knees and calves of aPLI.
The mounting plate behind the push plate is provided with a slotted hole, so that the push plate can be freely adjusted along the impact direction, the push plate is enabled to be in zero contact with and support the leg part, the leg part is kept vertical, then the speed of aPLI when the push plate is separated from the launching frame is ensured to be the same as the speed of the launching frame, and the impact speed of the leg part and the front part of the vehicle can be controlled within a specified range.
The clamping plate can be adjusted in the Y direction of the vehicle to align the center of the leg with the center of the push plate (i.e. the center of the impact point), and the leg can be controlled to be kept in the XoZ plane and meet the offset and meet the regulation requirements (less than 10 mm).
The height of the device is adjusted according to standard requirements so that the aPLI leg-shaped lower end metal surface is located at a height of 25mm from the horizon of the target vehicle. And aiming at the impact target point, finding a first contact point close to the impact target area, attaching an impact deviation monitoring mark and a flight attitude monitoring mark, and adjusting high-speed shooting.
Photographing according to test requirements, adjusting lamplight photographing, connecting a data acquisition system and ensuring that the devices can work normally.
The leg type transmitting device accumulates energy for the transmitter under a given program, and the transmitter pushes the transmitting frame and the leg type after the energy reaches a set parameter value, so that the transmitting frame drives aPLI leg type to jointly obtain a certain speed. The leg type is broken away from and freely flies when the launching frame reaches the limit, so that the leg type gesture is ensured to be stable and can not shake obviously.
The vehicle is impacted to the front test position of the vehicle after flying for a certain time, the leg-shaped posture is ensured to be vertical in the longitudinal plane of the vehicle at the moment of contacting with the front of the vehicle, and the requirement of the rule on the leg-shaped bending moment is met (the bending moment peak value cannot exceed +/-10 Nm 30ms before the contact moment).
Compared with the prior art, the launching frame of the novel leg type impactor for pedestrian protection aPLI has the following advantages:
The launching frame of the novel leg type impactor for pedestrian protection aPLI can keep natural sagging in the test process, ensure that a push plate in front of the launching frame can be closely attached to a leg type, realize the test function of the novel advanced leg type impactor aPLI, and meet all requirements of the leg type in the flight impact process in the standard.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
fig. 1 is a perspective structural example diagram of a launching cradle according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of the structure from a different angle to FIG. 1;
FIG. 3 is a schematic perspective view of FIG. 1 with one side plate and connector removed;
fig. 4 is a front view of the cradle.
Reference numerals illustrate:
1-an upper hook plate; 2-shaft holes; 3-clamping plates; 4-side plates; 5-connecting plates; 6-supporting plates; 7-mounting plates; 8-a slotted hole; 9-pushing plate; 10-a middle pushing plate; 11-pushing down plate; 12-clamping blocks; 13-clamping plate.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
The utility model provides a transmission frame of pedestrian protection aPLI new leg type impacter, including the transmission frame body, be provided with on the transmission frame body and collude board 1, the front of transmission frame body is provided with the push pedal, it has shaft hole 2 to open in the focus department of transmission frame body, the fixed connecting piece that is provided with in shaft hole 2 department, the transmission frame body passes through the connecting piece and the propeller installation of pedestrian protection test system, the upper end of transmission frame body is inside sunken shape, go up the space that colludes the upper body piece of aPLI new leg type impacter, aPLI new leg type impacter's thigh, knee and shank lean on with the push pedal tightly, still be provided with the clamping plate 3 that stretches out forward below the push pedal, clamping plate 3 can press from both sides tight shank.
Above-mentioned, the launching cradle body includes the curb plate 4 that two parallels and interval set up, through connecting plate 5 fixed connection between two curb plates 4, the preceding push pedal that sets up of two curb plates 4, the vertical direction setting of push pedal, and the push pedal is apart from the distance of launching cradle body adjustable, on the launching cradle body and be located on the position between last hook plate 1 and the push pedal vertically be provided with backup pad 6, and backup pad 6 compares more back in the push pedal, after launching cradle body and aPLI new leg type impacter cooperation, backup pad 6 leans on with the rear end metal of last physique.
The rear side of the support plate 6 is fixedly connected with the side plate 4 by the adhesive.
Above-mentioned, the push pedal rear panel is provided with mounting panel 7 perpendicularly, and mounting panel 7 is located the inboard of curb plate 4, and mounting panel 7 horizontal direction is provided with slotted hole 8, is provided with the bolt hole on the curb plate 4, and the bolt passes bolt hole and slotted hole 8 and realizes the fixed in position of push pedal and curb plate 4.
The pushing plate comprises an upper pushing plate 9, a middle pushing plate 10 and a lower pushing plate 11, and the upper pushing plate 9, the middle pushing plate 10 and the lower pushing plate 11 respectively correspond to the thighs, knees and calves of the aPLI new leg type impactor.
The clamping plates 3 are fixedly disposed on both sides of the lower push plate 11.
Above-mentioned, be equipped with shaft hole 2 on the relative position of curb plate 4, one side that connecting piece and launching cradle body are connected is provided with grip block 12 and grip block 13, grip block 12 is located between two vertical grip blocks 13, grip block 12 is located between two curb plates 4, grip block 13 is located curb plate 4 outside respectively, the axle passes grip block 12, shaft hole 2, grip block 13 realizes the fixed connection of curb plate 4 and connecting piece, be provided with connecting block 14 at the back of the connecting piece, be provided with the mounting hole 15 of being connected with pedestrian protection test system's propeller on the connecting block 14.
The reinforcing plate is also provided between the side plates 4.
The side plate 4 is provided with a plurality of round holes to reduce weight.
Firstly, the launching frame is fixedly installed and connected with a propeller of a pedestrian protection test system through a connecting piece, and because a shaft is arranged between the connecting piece and a side plate of the launching frame, the connecting piece and the launching frame are in a rotatable relation, and then an upper hook plate 1 of the launching frame is inserted into a gap of an upper mass block of a aPLI new leg type impactor, and the launching frame is in a natural vertical state.
The distal end of the upper hook plate 1 is inclined upwards (i.e. a certain included angle is formed between the upper hook plate 1 and the horizontal plane), so that the launching frame can be ensured to droop freely.
To ensure the aPLI legs are absolutely vertical, the upper support plate 6 of the launcher is zero-affixed and supports aPLI pubic bone. While the upper push plate 9, the middle push plate 10 and the lower push plate 11 support push blocks at the rear ends of the thighs, knees and calves of aPLI, respectively.
The mounting plate 7 behind the push plate is provided with a slotted hole 8, so that the push plate can be freely adjusted along the impact direction, the push plate is enabled to be attached to support the leg part, the leg part is kept vertical, the speed of aPLI when being separated from the launching frame is ensured to be the same as the speed of the launching frame, and the impact speed of the leg part and the front part of the vehicle is controlled within a specified range.
The clamping plate 3 can be adjusted in the Y direction of the vehicle to align the center of the leg with the center of the push plate (i.e. the center of the impact point), and the leg can be controlled to be kept in the XoZ plane and meet the offset and meet the regulation requirements (less than 10 mm).
The height of the device is adjusted according to standard requirements so that the aPLI leg-shaped lower end metal surface is located at a height of 25mm from the horizon of the target vehicle. And aiming at the impact target point, finding a first contact point close to the impact target area, attaching an impact deviation monitoring mark and a flight attitude monitoring mark, and adjusting high-speed shooting.
Photographing according to test requirements, adjusting lamplight photographing, connecting a data acquisition system and ensuring that the devices can work normally.
The leg type transmitting device accumulates energy for the transmitter under a given program, and the transmitter pushes the transmitting frame and the leg type after the energy reaches a set parameter value, so that the transmitting frame drives aPLI leg type to jointly obtain a certain speed. The leg type is broken away from and freely flies when the launching frame reaches the limit, so that the leg type gesture is ensured to be stable and can not shake obviously.
The vehicle is impacted to the front test position of the vehicle after flying for a certain time, the leg-shaped posture is ensured to be vertical in the longitudinal plane of the vehicle at the moment of contacting with the front of the vehicle, and the requirement of the rule on the leg-shaped bending moment is met (the bending moment peak value cannot exceed +/-10 Nm 30ms before the contact moment).
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (7)
1. A transmission frame of a new leg type impactor for pedestrian protection aPLI, which is characterized in that: the novel leg type impact device comprises a launching frame body, wherein an upper hooking plate is arranged on the launching frame body, a push plate is arranged in front of the launching frame body, a shaft hole is formed in the center of gravity of the launching frame body, a connecting piece is fixedly arranged at the shaft hole, the launching frame body is installed with a propeller of a pedestrian protection test system through the connecting piece, the upper end of the launching frame body is in an inner concave shape, the upper hooking plate is inserted into a gap of an upper mass block of a aPLI novel leg type impact device, thighs, knees and calves of the aPLI novel leg type impact device are abutted against the push plate, a clamping plate extending forwards is further arranged below the push plate, and the clamping plate can clamp two sides of the calves;
The launching frame body comprises two parallel side plates which are arranged at intervals, the two side plates are fixedly connected through a connecting plate, push plates are arranged in front of the two side plates, the push plates are arranged in the vertical direction, the distance between the push plates and the launching frame body is adjustable, a supporting plate is vertically arranged on the launching frame body and positioned between the upper hook plate and the push plates, and compared with the push plates, the supporting plate is more rear, and after the launching frame body is matched with a aPLI new leg type impactor, the supporting plate is tightly abutted against the rear end metal of the upper mass block;
the push pedal rear panel is provided with the mounting panel perpendicularly, and the mounting panel is located the inboard of curb plate, and mounting panel horizontal direction is provided with the slotted hole, is provided with the bolt hole on the curb plate, and the bolt passes bolt hole and slotted hole and realizes the fixed in position of push pedal and curb plate.
2. The frame of a new leg impactor for pedestrian protection aPLI as defined in claim 1, wherein: the back side of the supporting plate is fixedly connected with the side plate through an adhesive.
3. The frame of a new leg impactor for pedestrian protection aPLI as defined in claim 1, wherein: the push plate comprises an upper push plate, a middle push plate and a lower push plate, and the upper push plate, the middle push plate and the lower push plate respectively correspond to the thigh, the knee and the shank of the aPLI new leg type impactor.
4. A frame for a new leg impact of pedestrian protection aPLI as defined in claim 3, wherein: the clamping plates are respectively and fixedly arranged on two sides of the lower pushing plate.
5. The frame of a new leg impactor for pedestrian protection aPLI as defined in claim 1, wherein: the relative position of the side plates is provided with shaft holes, one side of the connecting piece, which is connected with the transmitting frame body, is provided with a clamping block and a clamping plate, the clamping block is positioned between the two vertical clamping plates, the clamping block is positioned between the two side plates, the clamping plates are respectively positioned outside the side plates, the shaft penetrates through the clamping block, the shaft holes and the clamping plates to realize the fixed connection of the side plates and the connecting piece, the connecting piece is provided with a connecting block at the back, and the connecting block is provided with a mounting hole connected with a propeller of the pedestrian protection test system.
6. The frame of a new leg impactor for pedestrian protection aPLI as defined in claim 1, wherein: a reinforcing plate is also arranged between the side plates.
7. The frame of a new leg impactor for pedestrian protection aPLI as defined in claim 1, wherein: the side plates are provided with a plurality of round holes to reduce weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010167339.6A CN111307471B (en) | 2020-03-11 | 2020-03-11 | Transmitting frame of novel leg type impactor for pedestrian protection aPLI |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010167339.6A CN111307471B (en) | 2020-03-11 | 2020-03-11 | Transmitting frame of novel leg type impactor for pedestrian protection aPLI |
Publications (2)
| Publication Number | Publication Date |
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| CN111307471A CN111307471A (en) | 2020-06-19 |
| CN111307471B true CN111307471B (en) | 2024-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010167339.6A Active CN111307471B (en) | 2020-03-11 | 2020-03-11 | Transmitting frame of novel leg type impactor for pedestrian protection aPLI |
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| CN (1) | CN111307471B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112304638A (en) * | 2020-10-30 | 2021-02-02 | 广州汽车集团股份有限公司 | Pedestrian protection aPLI leg dynamic calibration device and method |
| CN114964814B (en) * | 2022-05-26 | 2023-03-28 | 杭州集普科技有限公司 | Leg type dynamic calibration device and method |
| CN115729159B (en) * | 2023-01-09 | 2023-03-28 | 中汽研汽车工业工程(天津)有限公司 | Control method of human body model transmitting device for simulating motor vehicle pedestrian protection |
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| CN201772988U (en) * | 2010-08-24 | 2011-03-23 | 浙江吉利汽车研究院有限公司 | Protection device of launching rack |
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| CN111307471A (en) | 2020-06-19 |
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