CN202710330U - Test bench for comprehensive test of automobile safety airbag - Google Patents
Test bench for comprehensive test of automobile safety airbag Download PDFInfo
- Publication number
- CN202710330U CN202710330U CN 201220391988 CN201220391988U CN202710330U CN 202710330 U CN202710330 U CN 202710330U CN 201220391988 CN201220391988 CN 201220391988 CN 201220391988 U CN201220391988 U CN 201220391988U CN 202710330 U CN202710330 U CN 202710330U
- Authority
- CN
- China
- Prior art keywords
- air bag
- plate
- automobile air
- safe automobile
- cushion chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The utility model discloses a test bench for the comprehensive test of an automobile safety airbag. The test bench comprises a test bench mechanical part which consists of an automobile safety airbag unfolding speed and acceleration test buffering device, an automobile safety airbag counteracting force testing device and a test stand. The test stand comprises a test stand lower bracket and an automobile safety airbag static unfolding and lifting device, wherein the automobile safety airbag static unfolding and lifting device is mounted on one side of a test bench surface of the test stand lower bracket, the automobile safety airbag unfolding speed and acceleration test buffering device is mounted at the upper end of the automobile safety airbag static unfolding and lifting device, and the automobile safety airbag counteracting force testing device is mounted on the test bench surface in front of the automobile safety airbag static unfolding and lifting device; and locking guide rails and pressing plates are vertically mounted on inner side end surfaces of a left side supporting frame and a right side plate supporting frame in the automobile safety airbag counteracting force testing device, and guide plates and locking guide rails in the automobile safety airbag static unfolding and lifting device are in sliding connection with the pressing plates in a matching manner.
Description
Technical field
The utility model relates to a kind of test and analyzes the test unit of safe automobile air bag.More particularly, the utility model relates to a kind of static expansion process by data and recording image safe automobile air bag, and the performance of safe automobile air bag is carried out the safe automobile air bag integration test testing table of analysis verification by the data that gather.
Background technology
Along with the surge of automobile quantity and the raising of the speed of a motor vehicle, it is frequent and serious that traffic hazard becomes, and the security of automobile is paid attention to by people day by day.Air bag is supplementary constraints system and the matching used security system of three-point safety belt; effect is to reduce the huge inertial force that brings of colliding the secondary collision that the driver and conductor causes is injured; relax impact and absorption collision energy that the occupant is subject to, the protection occupant safety.Air bag is divided into again the kinds such as DAB, PAB, SAB, PAS, CAB, ECU.
Safe automobile air bag generally is comprised of sensor (sensor), ECU (Electrical Control Unit) (ECU), gasbag (bag), gas generator (infla tor) and support etc.When the momentum that is subject to when the crash sensor of automobile surpasses setting, ECU (Electrical Control Unit) is sent a trigger pulse to gas generator, trigger the detonator in the generator, the blasting cap detonation gas breakdown is sent out the fuel cassette of device, fixed fuel is lighted and produced high temperature, gases at high pressure (nitrogen), gas pours gasbag after filtering cooling by filtrator rapidly.Gasbag expands in 20～50ms and reaches maximum volume, with securing band mating protection occupant safety.
Static test and the pressure vessel test of launching of safe automobile air bag among the GB/T 19949.2-2005/ISO 12097-2:1996, and the static reacting force that launches of the safe automobile air bag in the industry a new test method is tested, all be whether the checking air bag meets the indispensable experiment of standard, the experimental data that draws simultaneously also is air bag design criteria and body frame and the needed critical data of instrument panel design standards.The purposes of experimental data is as shown in the table:
Table 1
The test method that provides according to GB/T 19949.2-2005/ISO 12097-2:1996, static state in the safe automobile air bag performance test is launched test and is adopted the high-speed camera record, calculate change of shape amount, speed and the acceleration that gasbag launches by image treating and limited element analysis technique, by other parameters of these numerical evaluation testing automobile air bags needs; Pressure vessel test need to adopt the Special-purpose enclosed test chamber and install sensor test container pressure value additional, calculates the reacting force of safe automobile air bag by these numerical value; The test of the static expansion of safe automobile air bag reacting force then needs Special experimental equipment to finish the test of reacting force.Above method test is with high costs, process is loaded down with trivial details, there are uncertain error in test bit and actual value, can not deal with miscellaneous safe automobile air bag test assignment.
Summary of the invention
Technical problem to be solved in the utility model be overcome that prior art exists that experimentation cost is high, process is loaded down with trivial details, there is error in test bit and actual value, can not deal with the problem of miscellaneous safe automobile air bag test assignment, a kind of safe automobile air bag integration test testing table is provided.
For solving the problems of the technologies described above, the utility model is to adopt following technical scheme to realize: described safe automobile air bag integration test testing table partly is comprised of testing table mechanical part and digital image acquisition analysis and Control.Described testing table mechanical part is comprised of safe automobile air bag development rate and acceleration test snubber assembly, safe automobile air bag reacting force proving installation and test-bed.
Test-bed is comprised of testing table lower carriage and the static jacking gear that launches of safe automobile air bag.Described testing table lower carriage is to adopt aluminium alloy extrusions to be mounted to the tower structure spare of cuboid as supporting leg and crossbeam, tests table top and is installed on the top end face of tower structure spare that the testing table lower carriage is cuboid.The static jacking gear that launches of safe automobile air bag is installed in a side of testing table top, safe automobile air bag development rate and acceleration test snubber assembly are installed in the static upper end of launching jacking gear of safe automobile air bag in the test-bed, and safe automobile air bag reacting force proving installation is installed on the test table top in the static the place ahead of launching jacking gear of safe automobile air bag in the test-bed.Locking guide rail and pressing plate vertically are installed on the inboard end face of the left side stand component of safe automobile air bag reacting force proving installation and right side bracing frame, and safe automobile air bag is static to launch guide plate in the lifting dress and locking guide rail and cooperates to be installed as with pressing plate and be slidingly connected.
The static jacking gear that launches of safe automobile air bag described in the technical scheme comprises Lifting platform, the worm gear screw, guide plate, leading screw, 4 linear roller bearings that structure is identical, 4 guide pillars that structure is identical, 4 lifting table support columns that structure is identical, top chock, 1 bugle contact ball bearing, step, taper roll bearing, 2 pressing plates that structure is identical, 2 locking guide rails that structure is identical, 2 lifting table reinforcements that structure is identical, worm screw, 2 worm shaft bearings that structure is identical, lifting table foundation plate and 22 bugle contact ball bearings that structure is identical.Four jiaos of described lifting table foundation plate adopt bolt that four linear roller bearing and top chocks that structure is identical are installed with the center, the lifting table foundation plate is fixed on the test table top by 4 identical lifting table support column and screws of structure again, adopt bolt that step is installed at the test table top, step overlaps with the axis of rotation of top chock, and the worm gear screw adopts 1 bugle contact ball bearing and taper roll bearing to be installed on top chock and the step.The worm mesh that the 2 bugle contact ball bearings that the worm gear screw worm shaft bearing identical with being connected 2 structures is identical with 2 structures are installed on the test table top connects the axis of rotation square crossing of worm gear screw and worm screw.The guide pillar that 4 structures are identical and the upper end of leading screw are fixedly connected with Lifting platform, insert in the identical linear roller bearing of 4 structures and the worm gear screw as being slidingly connected and being threaded in the identical guide pillar of 4 structures and the stage casing of leading screw, and the guide pillar that 4 structures are identical and the lower end insertion of leading screw are tested in the through hole corresponding on the table top.Lifting table vertical connection of reinforcement that the bottom surface of Lifting platform is identical with 2 block structures with guide plate, the vertical connection of an end of the lifting table reinforcement that a side of guide plate is identical with 2 block structures.
Safe automobile air bag reacting force proving installation described in the technical scheme by special use locating rack is installed and general pedestal forms.Described general pedestal comprises left side bracing frame, left side locking plate, airbag restraint plate, runing rest, support column, right side locking plate, worm gear, right side bracing frame, worm screw and worm shaft bearing that 4 root architectures are identical.Left-handed rotating shaft on the runing rest and dextral shaft adopt rolling bearing to be installed on left side bracing frame and the right side bracing frame as being rotationally connected, be fitted with left side locking plate and right side locking plate on the left-handed rotating shaft of runing rest and the dextral shaft, the worm gear that install on the right side of right side locking plate is connected with the worm mesh on being installed in the right side bracing frame, and worm screw one end is processed into the tetragonal body of being convenient to load and unload rotary spanner.Left side locking plate and right side locking plate are installed in the left-handed rotating shaft and dextral shaft of runing rest by key, by nut the left side locking plate in the left-handed rotating shaft and the right side locking plate on the dextral shaft and worm gear are fixed on the runing rest, by screw the left side locking plate in the general pedestal and right side locking plate are fixed on left side bracing frame and the right side bracing frame.Lower end and the left side bracing frame of the support column that 4 structures are identical are threaded with the top end face of right side bracing frame, and the upper end of the support column that 4 structures are identical is connected with air bag restraining plate bolt.The special-purpose locating rack of installing is installed on the runing rest.
Runing rest described in the technical scheme is to adopt square steel pipe welded to be processed into the tower structure spare of U font, be that runing rest is by consisting of at the bottom of anticlockwise cradle wall, right rotation cradle wall and the runing rest, anticlockwise cradle wall and right rotation cradle wall be installed in parallel to each other at the bottom of the runing rest two ends and and the runing rest dolly straight.On the left surface of the anticlockwise cradle wall of runing rest with on the right flank of right rotation cradle wall left-handed rotating shaft and the dextral shaft vertical with the left and right side are installed, be processed with keyway on the left-handed rotating shaft of runing rest and the dextral shaft, and by screw left-handed rotating shaft and dextral shaft are installed on anticlockwise cradle wall and the right rotation cradle wall in the runing rest as being fixedly connected with, the axis of rotation of left-handed rotating shaft and dextral shaft is on same axis.Increase steel plate for the installing force sensor on the runing rest bottom surface of runing rest.
Strong sensor is installed on the runing rest described in the technical scheme, be layout, 3 horizontal layout of arranging the power sensor that single-point is arranged the power sensor at the bottom of the runing rest of power sensor in runing rest, the horizontal layout of 4 upper layout power sensors, and in the space layout of runing rest with additional support frame layout power sensor.
Safe automobile air bag development rate described in the technical scheme and acceleration test snubber assembly comprise 2 bottom location-plate, cushion chamber left plate, angular-rate sensor, cushion chamber cover plate, reinforcement location-plate, cushion chamber right plate, rotating shaft, acceleration transducer, location-plate, sensor support post, shaft coupling, cushion chamber left-hand axis bearing, cushion chamber right-hand axis bearing, buffering cover plate, locating piece, cushion chamber header board and throttling valve that structure is identical.The identical cushion chamber left plate of the structure that is parallel to each other and the rear narrow end surface of cushion chamber right plate are connected the medial surface screw and are connected with the cushion chamber cover plate, the cushion chamber left plate that the cushion chamber header board is identical with the structure that is connected is connected with the front narrow end surface screw of cushion chamber right plate, and the medial surface top rail of cushion chamber cover plate is equipped with the reinforcement location-plate.The buffering cover plate adopts screw and pin and rotating shaft to be connected as a single entity, and rotating shaft is installed in the top of cushion chamber header board by being installed in cushion chamber left-hand axis bearing on cushion chamber left plate and the cushion chamber right plate, cushion chamber right-hand axis bearing and 2 identical rolling bearings of structure.One end of rotating shaft is equipped with shaft coupling, and the position that is positioned at buffering cover plate below of cushion chamber header board upper end is equipped with locating piece, and the left side of cushion chamber left plate adopts bolt that the identical bottom location-plate of structure is installed with the bottom on the right side of cushion chamber right plate.The employing sensor support post that angular-rate sensor is installed in rotating shaft left side is installed on the location-plate on the cushion chamber left plate, and the input end of angular-rate sensor is connected shaft coupling and is connected with the rotating shaft left end.On the buffering cover plate acceleration transducer is installed, throttling valve is installed on the cushion chamber header board.
Compared with prior art the beneficial effects of the utility model are:
1. safe automobile air bag integration test testing table described in the utility model can be finished the static expansion experiment of safe automobile air bag and the experiment of the static expansion of safe automobile air bag reacting force simultaneously.Safe automobile air bag integration test the testing table simultaneously reacting force opened of the start-up time of synchronous acquisition air bag, the static duration of run of air bag, air bag, development rate, acceleration and expansion shape of gasbag in the static expansion process of air bag, the impact that the method for folding of assessment gasbag and gas generator launch safe automobile air bag.Safe automobile air bag integration test testing table described in the utility model can be widely used in safe automobile air bag comprehensive Design and performance test, and provides important design parameter for body of a motor car skeleton, seat, instrument panel etc. simultaneously.
2. safe automobile air bag integration test testing table described in the utility model is divided into testing table mechanical part and digital image acquisition analysis and Control part.Described testing table mechanical part is used for installing safe automobile air bag, the related experiment condition when sensor and the expansion of modeled fit safe automobile air bag are set of different model; Data and image acquisition and analytical work are controlled and finished simultaneously to described digital image acquisition analysis and Control part to whole experimentation, and automatic save data generated test analysis report after experiment finished.Guarantee integrality, accuracy and the real-time of experiment.
3. safe automobile air bag integration test testing table described in the utility model can be realized five degree of freedom adjustment, be safe automobile air bag development rate and accelerating testing device lifting, move forward and backward and cushion the rotation of cover plate, rotation and the move left and right of safe automobile air bag reacting force proving installation.By adjusting this five degree of freedom, testing table can carry out installation testing to safe automobile air bag dissimilar and that different experiments requires.
4. the test-bed agent structure in the mechanical part of safe automobile air bag integration test testing table described in the utility model adopts aluminium alloy extrusions to build, and in the situation of proof strength, has optimized the weight of testing table.The jacking gear that comprises shock resistance vibrations on the test-bed, in the situation of finishing the high precision lifting, bear the impact endurance test shock that produces when safe automobile air bag is static to launch, guarantee the stable of jacking gear, static safe automobile air bag development rate and the acceleration test snubber assembly that launches on the jacking gear of safe automobile air bag worked under the vibrations condition, reduce experimental error.
5. the safe automobile air bag reacting force proving installation in the safe automobile air bag integration test testing table described in the utility model (in detail with reference to safe automobile air bag reacting force proving installation patent) can be realized different types of safe automobile air bag is clamped, can adopt different power sensors and different sensor placements according to requirement of experiment, and the reacting force during the testing automobile air-bag deployment.Safe automobile air bag reacting force proving installation makes whole system have simultaneously versatility and specificity, has saved experimentation cost, has improved the emulation of experiment, increases the dirigibility of experiment, satisfies different requirement of experiment and method.
6. angular velocity and the acceleration of the safe automobile air bag development rate in the safe automobile air bag integration test testing table described in the utility model and acceleration test snubber assembly (in detail with reference to safe automobile air bag development rate and acceleration test snubber assembly patent) collection can be used to assess the method for folding of air bag to the impact of airbag deployment.Be analyzed the combination property of assessment safe automobile air bag with the safe automobile air bag reacting force of testing and the graphic parameter of video camera.
7. safe automobile air bag development rate and the acceleration test snubber assembly in the safe automobile air bag integration test testing table described in the utility model is designed with buffering protection function; absorb the kinetic energy of buffering cover plate after finishing test, the integrality of the acceleration transducer on protection buffering cover plate and the cover plate.
8. the part of the digital image acquisition analysis and Control in the safe automobile air bag integration test testing table described in the utility model partly is comprised of air bag controlled part, high-speed image sampling part and data acquisition process.Compare the situation that traditional data collecting device sample rate is slow, measuring accuracy is low, testing tool quantity is many, the construction cycle is long, this equipment has shortened the development time greatly, has reduced cost of development, has improved the reliability of test macro.
9. the air bag controlled in the part of the digital image acquisition analysis and Control in the safe automobile air bag integration test testing table described in the utility model partly is used for apparatus to cause bursting, high-speed camera and the data collecting card of control air bag.The effect of air bag controlled part is to start synchronously air bag and data acquisition function, and 5ms starts high-speed camera equipment in advance, make take the photograph at a high speed machine can the whole experimentation of complete documentation, and optimization data collection capacity guarantees consistance and the integrality of experiment.
10. the digital image acquisition analysis and Control in the safe automobile air bag integration test testing table described in the utility model partly is used for recording the static image information of launching of safe automobile air bag, calculate change of shape amount, speed and the acceleration that gasbag launches by image treating and limited element analysis technique, be analyzed in order to the data with the sensor collection, to reduce experimental error, improve accuracy.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1 is the axonometric projection graph that safe automobile air bag integration test test platform structure described in the utility model forms;
Fig. 2 is the static front view that launches the lifting device structure composition of safe automobile air bag in the safe automobile air bag integration test testing table described in the utility model;
Fig. 3 is the static vertical view that launches the lifting device structure composition of safe automobile air bag in the safe automobile air bag integration test testing table described in the utility model;
Fig. 4 is the cut-open view on the left view that the static expansion of safe automobile air bag lifting device structure forms in the safe automobile air bag integration test testing table described in the utility model;
Fig. 5 is the shaft side projection drawing that safe automobile air bag reacting force proving installation structure forms in the safe automobile air bag integration test testing table described in the utility model;
Fig. 6 is the shaft side projection drawing that general pedestal structure forms in the safe automobile air bag reacting force proving installation in the safe automobile air bag integration test testing table described in the utility model;
Fig. 7 is the cut-open view on the front view that safe automobile air bag reacting force proving installation structure forms in the safe automobile air bag integration test testing table described in the utility model;
Fig. 8 is the right view that general pedestal structure forms in the safe automobile air bag reacting force proving installation in the safe automobile air bag integration test testing table described in the utility model;
Fig. 9 is the shaft side projection drawing of power sensor space layout in the safe automobile air bag reacting force proving installation in the safe automobile air bag integration test testing table described in the utility model;
Figure 10 is the shaft side projection drawing that safe automobile air bag development rate and acceleration test buffer unit structure form in the safe automobile air bag integration test testing table described in the utility model;
Figure 11 is the front view that safe automobile air bag development rate and acceleration test buffer unit structure form in the safe automobile air bag integration test testing table described in the utility model;
Figure 12 is that safe automobile air bag development rate and acceleration test buffer unit structure form cut-open view on the left view in the safe automobile air bag integration test testing table described in the utility model;
Figure 13 is digital image acquisition analysis and Control part-structure schematic block diagram in the safe automobile air bag integration test testing table described in the utility model;
Figure 14 is the cut-open view on the worm gear screw front view that adopts in the safe automobile air bag integration test testing table described in the utility model;
Among the figure: 1. safe automobile air bag development rate and acceleration test snubber assembly, 2. safe automobile air bag reacting force proving installation, 3. test-bed, 4. safe automobile air bag static state is launched jacking gear, 5. Lifting platform, 6. worm gear screw, 7. guide plate, 8. leading screw, 9. linear roller bearing, 10. guide pillar, 11. lifting table support columns, 12. top chock, 13.1 the bugle contact ball bearing, 14. steps, 15. taper roll bearings, 16. pressing plate, 17. locking guide rail, 18. the lifting table reinforcement, 19. worm screws, 20. worm shaft bearings, 21. the lifting table foundation plate, 22.2 bugle contact ball bearings; 23. the test table top, 24. safe automobile air bags, the 25. special-purpose locating racks of installing, 26. general pedestal, 27. left side bracing frames, 28. left side locking plates, 29. the airbag restraint plate, 30. runing rests, 31. support columns, 32. right side locking plate, 33. worm gear, 34. right side bracing frames, 35. worm screws, 36. the worm shaft bearing, 37. additional support framves; 38. the power sensor, 39. bottom location-plates, 40. cushion chamber left plates, 41. angular-rate sensor (rotary encoder), 42. cushion chamber cover plates are strengthened location-plate in 43. chambeies, 44. the cushion chamber right plate, 45. rotating shafts, 46. acceleration transducers, 47. location-plate, 48. sensor support posts, 49. shaft couplings, 50. cushion chamber left-hand axis bearing, 51. cushion chamber right-hand axis bearings, 52. buffering cover plates, 53. the cover plate locating piece, 54. cushion chamber header boards, 55. throttling valve
Embodiment
Below in conjunction with accompanying drawing the utility model is explained in detail:
Consult Fig. 1 and Figure 13, safe automobile air bag integration test testing table described in the utility model partly is comprised of testing table mechanical part and digital image acquisition analysis and Control.The testing table mechanical part is divided into safe automobile air bag development rate and acceleration test snubber assembly 1, safe automobile air bag reacting force proving installation 2 and test-bed 3.The digital image acquisition analysis and Control partly comprises air bag controlled part, high-speed image sampling part and data acquisition process part.
The expansion shape of the static duration of run of start-up time, safe automobile air bag that safe automobile air bag integration test testing table described in the utility model can the testing automobile air bag, the reacting force that safe automobile air bag is opened, gasbag and the speed of speed and buffering cover plate 52 and acceleration etc.By gathering above data safe automobile air bag is carried out all-round property testing, and be the body of a motor car skeleton simultaneously, seat, instrument panel etc. provide important design parameter.
Consult Fig. 1, safe automobile air bag development rate in the testing table mechanical part described in the utility model and acceleration test snubber assembly 1 are arranged on the static upper end of launching jacking gear 4 of safe automobile air bag in the test-bed 3, safe automobile air bag reacting force proving installation 2 is installed on the test table top 23 of test-bed 3 in the place ahead of safe automobile air bag development rate and acceleration test snubber assembly 1, namely is arranged on the test table top 23 of test-bed 3 in the static the place ahead of launching jacking gear 4 of the safe automobile air bag of test-bed 3.On the inboard end face of the left side stand components 27 of safe automobile air bag reacting force proving installation 2 and right side bracing frame 34 locking guide rail 17 and pressing plate 16 are installed vertically, safe automobile air bag is static to launch lifting and fills the two ends of the guide plate 7 in 4 and the locking guide rail 17 in the safe automobile air bag reacting force proving installation 2 and cooperate to be installed as with pressing plate 16 and be slidingly connected.
Test-bed 3 in the testing table mechanical part described in the utility model is comprised of testing table lower carriage and the static jacking gear 4 that launches of safe automobile air bag, described testing table lower carriage is to adopt aluminium alloy extrusions to be mounted to the tower structure spare of cuboid as supporting leg and crossbeam setting, test table top 23 is installed on the top end face of tower structure spare that the testing table lower carriage is cuboid, and 4 the identical supporting legs that can regulate height of structure are installed in the bottom of testing table lower carriage.The agent structure of safe automobile air bag reacting force proving installation 2 adopts square steel tube to be welded, and in the strength and stability of warranty test platform, has optimized overall weight.Safe automobile air bag integration test testing table can be realized the adjustment of five degree of freedom, being safe automobile air bag development rate and acceleration test snubber assembly 1 moves and cushions the rotation of cover plate 52 along Z-direction lifting, X-direction, and safe automobile air bag reacting force proving installation 2 rotates and moves along Y direction around Y-axis.By adjusting this five degree of freedom, safe automobile air bag integration test testing table can carry out installation testing to safe automobile air bag dissimilar and that different experiments requires.
Consult Fig. 1 to Fig. 4, the static jacking gear 4 that launches of safe automobile air bag on the test-bed 3 in the described testing table mechanical part comprises Lifting platform 5, worm gear screw 6, guide plate 7, leading screw 8,4 linear roller bearings 9 that structure is identical, 4 guide pillars 10 that structure is identical, 4 lifting table support columns 11 that structure is identical, top chock 12, angular contact ball bearing 13, step 14, taper roll bearing 15,2 pressing plates 16 that structure is identical, 2 identical lifting table reinforcements 18 of 17,2 structures of locking guide rail that structure is identical, worm screw 19,2 worm shaft bearings 20 that structure is identical, angular contact ball bearing 22 that lifting table foundation plate 21 is identical with 2 structures etc.
Described lifting table foundation plate 21 is the rectangular plate type structural member, four jiaos of lifting table foundation plate 21 places and center are provided with four linear roller bearing through holes and the top chock ladder hole that linear roller bearing 9 and top chock 12 are installed, and two minor face places of lifting table foundation plate 21 are evenly equipped with the support column through hole of mounting lifting platform support column 11.Four jiaos of described lifting table foundation plate 21 adopt bolt that four linear roller bearing 9 and top chocks 12 that structure is identical are installed with the center, lifting table foundation plate 21 is fixed on the test table top 23 in the test-bed 3 by the identical lifting table support column 11 of 4 structures and screw, adopt bolt that step 14 is installed at test table top 23, step 14 overlaps with the axis of rotation of top chock 12.Worm gear screw 6 adopts 1 bugle contact ball bearing 13 and taper roll bearing 15 to be installed on top chock 12 and the step 14, worm gear screw 6 and adopt the identical worm shaft bearing 20 of 2 structures 2 bugle contact ball bearings 22 identical with 2 structures to be installed in the worm screw 19 of testing on the table top 23 to be meshed.The guide pillar 10 that 4 structures are identical and the upper end of leading screw 8 are fixedly connected with Lifting platform 5, insert in the identical linear roller bearing 9 of 4 structures and the worm gear screw 6 as being slidingly connected and being threaded in the guide pillar 10 that 4 structures are identical and the stage casing of leading screw 8, on the test table top 23 in the guide pillar 10 that 4 structures are identical and the lower end insertion test-bed 3 of leading screw 8 in the corresponding through hole.Be installed in worm screw 19 and 6 engagements of the worm gear screw between test table top 23 and the lifting table foundation plate 21 on the test table top 23, the transformation of double reduction and transmission direction is finished in the axis of rotation square crossing of worm screw 19 and worm gear screw 6.Worm screw 19 1 (left side) end processing square toes are used for assembly wrench, and effect is that control worm screw 19 is rotated, and finishes whole device lifting.
The effect that safe automobile air bag on the described test-bed 3 is static to launch in the jacking gear 4 the identical locking guide rail 17 of 2 structures is the gap of eliminating guide pillar 10 existence identical with 4 structures of the identical linear roller bearing 9 of 4 structures, reduce impulsive force to the static vibrations that jacking gear 4 causes, the enhancing stability launched of safe automobile air bag.Safe automobile air bag reacting force proving installation 2 in locking guide rail 17 and the safe automobile air bag integration test testing table adopts integrated designs, described integrated design is namely by Lifting platform 5, guide plate 7, locking guide rail 17, the static jacking gear 4 that launches of 16 pairs of safe automobile air bags of lifting table reinforcement 18 and pressing plate is locked and damping, Lifting platform 5, the lifting table reinforcement 18 that guide plate 7 is identical with 2 block structures is connected by screw into an integral body, exactly, the end face of the lifting table reinforcement 18 large right-angle sides of the right-angle triangle that 2 block structures are identical and the both sides screw of Lifting platform 5 bottom surfaces are fixedly connected with, the end face on one side of the guide plate 7 of rectangle and a long limit with are connected the middle right-angle side end face of the identical lifting table reinforcement 18 of block structure and are connected with the bottom surface screw of Lifting platform 5, the lifting table reinforcement 18 that guide plate 7 is identical with 2 block structures is vertical with the bottom surface of Lifting platform 5, and the lifting table reinforcement 18 that guide plate 7 is identical with 2 block structures is vertical.2 identical locking guide rails 17 of structure are vertically fixed in the safe automobile air bag integration test testing table on the left side bracing frame in the safe automobile air bag reacting force proving installation 2 27 and the right side bracing frame 34 inboards end face of (with static jacking gear 4 sides adjacent of launching of safe automobile air bag), guarantee the static mechanics closure of launching jacking gear 4 of safe automobile air bag.
The static jacking gear 4 that launches of described safe automobile air bag is when carrying out lifting, unclamp the pressing plate 16 of rectangular guideway, rotary worm 19, driving worm gear screw 6 rotates, worm gear screw 6 is delivered to rotation on the leading screw 8, leading screw 8 moves along Z-direction, under the guiding of the identical linear roller bearing 9 of 4 structures, realize the static lifting that launches jacking gear 4 of whole safe automobile air bag, when being elevated to specified altitude assignment, with pressing plate 16 lockings, finish static the fixing of jacking gear 4 that launch of whole safe automobile air bag.
Static jacking gear 4 one sides of launching of described safe automobile air bag are equipped with height gauge, are used for accurately controlling Lifting platform 5 with respect to the height of test table top 23.
Consult Figure 14, the structure of described worm gear screw 6 is that worm gear and screw are processed into one, be that worm gear set is contained on the screw, be processed with the gear teeth that are meshed with worm screw 19 on the worm gear periphery, be processed with the screw thread that cooperates with leading screw 8 in the center pit of screw, the axis of rotation conllinear of worm gear and screw combines two kinds of functions of worm gear and screw.
The secondary transmission principle that the static expansion of described safe automobile air bag jacking gear 4 adopts worm and gears and screw-nut to match has reduced ratio of gear, i.e. i=i
1* i
2, i
1Be the ratio of gear of worm and gear, i
2Be the ratio of gear of screw-nut, improved the precision of whole device.Because worm gear structure and screw-nut structure have auto-lock function, make the self-align more accurate of lifting table.Cooperate the guiding of linear roller bearing and the fastening function of locking guide rail 17, the mechanical vibration that the enormous impact power that produces when making whole jacking gear can bear the static expansion of safe automobile air bag is brought, safe automobile air bag development rate and acceleration test snubber assembly 1 that assurance safe automobile air bag static state is launched on the jacking gear 4 can be worked normally, can not launch because safe automobile air bag is static malfunctioning the or damage of impact endurance test shock of generation.
Consult Fig. 5 to Fig. 9, the safe automobile air bag reacting force proving installation 2 in the described testing table mechanical part is divided into special-purpose locating rack 25 and the general pedestal 26 installed.
The main body of the general pedestal 26 in the described safe automobile air bag reacting force proving installation 2 is runing rests 30, can adjust angle and locking.Be provided with the installation site of the special use installation locating rack 25 of the power sensor 38 of different size and the safe automobile air bag 24 that different size is installed on the runing rest 30, can do corresponding adjustment according to different safe automobile air bag types and requirement of experiment.The special-purpose locating rack 25 of installing is special-purpose fixing and mounting brackets of making according to model and the installation method of safe automobile air bag.Special-purpose installation locating rack 25 is installed on the power sensor 38 and with general pedestal 26 and links to each other.When safe automobile air bag 24 launched, reacting force was installed locating rack 25 by special use and is delivered on the power sensor 38.The special-purpose combination that locating rack 25 and general pedestal 26 are installed makes safe automobile air bag reacting force proving installation 2 have simultaneously versatility and specificity, has saved experimentation cost, has improved the emulation of experiment.
Consult Fig. 6 to Fig. 8, the general pedestal 26 of the safe automobile air bag reacting force proving installation 2 in the described testing table mechanical part is comprised of left side bracing frame 27, left side locking plate 28, airbag restraint plate 29, runing rest 30, support column 31, right side locking plate 32, worm gear 33, right side bracing frame 34, worm screw 35 and worm shaft bearing 36 that 4 root architectures are identical.
Runing rest 30 in the described general pedestal 26 is the framework junction parts that adopt the U font that rectangular steel tube processing (welding) forms, be that runing rest 30 is by the anticlockwise cradle wall, consist of at the bottom of right rotation cradle wall and the runing rest, anticlockwise cradle wall and right rotation cradle wall be installed in parallel to each other at the bottom of the runing rest two ends and and the runing rest dolly straight, lateral symmetry face and the vertical plane of symmetry at the bottom of the runing rest of anticlockwise cradle wall and right rotation cradle wall are coplanar, and why adopting the rectangular steel tube purpose is to alleviate its weight in the situation that guarantees general pedestal 26 bulk strengths.On the left surface of the anticlockwise cradle wall of runing rest 30 with on the right flank of right rotation cradle wall left-handed rotating shaft and the dextral shaft vertical with the left and right side are installed, and by screw the turning axle of both sides is installed on anticlockwise cradle wall and the right rotation cradle wall in the runing rest 30 as being fixedly connected with, left-handed rotating shaft and dextral shaft guarantee on same axis.For installing force sensor 38 increases steel plate, conveniently it is carried out finishing on the runing rest bottom surface in the runing rest 30, strengthen the precision of whole safe automobile air bag reacting force proving installation 2.
Described general pedestal 26 can be adjusted angle and locking.Left-handed rotating shaft on the runing rest 30 and dextral shaft adopt rolling bearing to be installed on left side bracing frame 27 and the right side bracing frame 34 as being rotationally connected.Left side bracing frame 27 and right side bracing frame 34 are fixed by screws on the test table top 23 in the test-bed 3.Adopt general pedestal 26 worm and gear and the irreversible principle of Worm Wheel System realize anglec of rotation adjustment and the self-locking to runing rest 30.Worm screw 35 1 ends (left end) are processed into square toes (tetragonal body), are convenient to load and unload rotary spanner.Be set with left side locking plate 28 and right side locking plate 32 on the left-handed rotating shaft that is in left side bracing frame 27 and right side bracing frame 34 outsides of runing rest 30 and the dextral shaft, process keyway on the left-handed rotating shaft of runing rest 30 and the dextral shaft, left side locking plate 28 and right side locking plate 32 are positioned in the left-handed rotating shaft and dextral shaft of runing rest 30 by key, the right side of right side locking plate 32 is equipped with worm gear 33, worm gear 33 is meshed and realizes the angular setting of runing rest 30 be installed in worm screw 35 on the right side bracing frame 34 by worm shaft bearing 36, then by nut the left side locking plate 28 of left-handed rotating shaft on dextral shaft and right side locking plate 32 and worm gear 33 is fixed on the runing rest 30.By screw the left side locking plate 28 on the runing rest 30 and right side locking plate 32 are fixed on again and realize the whole fastening of runing rest 30 on left side bracing frame 27 and the right side bracing frame 34, purpose is to eliminate the backlash that exists between the worm and gear, increases the stability of the runing rest 30 in the safe automobile air bag reacting force proving installation 2.Be carved with scale on the locking plate 28 of left side, be convenient to accurately control the anglec of rotation.
Quantity, layout and the model of the power sensor 38 on the general pedestal 26 in the described safe automobile air bag reacting force proving installation 2 can change according to requirement of experiment, such as applicable one dimension pull pressure sensor, two-dimentional pull pressure sensor or three-dimensional pull pressure sensor etc.
Consult Fig. 6, Fig. 7 and Fig. 9, in the test of the static expansion of safe automobile air bag reacting force, the layout of power sensor 38 is particularly important.Different safe automobile air bags require also different to adopting the force.For adapting to requirement of experiment, be provided with different power installation of sensors points on the general pedestal 26, different according to requirement of experiment and power sensor 38 are transformed or are adjusted general pedestal 26, just can adapt to the requirement of testing.For example a pull pressure sensor is arranged in single-point power sensor 38 layouts of the geometric center of general pedestal 26; Also power sensor 38 can be distributed on 3 horizontal layout that center on the circle of general pedestal 26 geometric centers; As shown in Figure 6, adopt 4 horizontal layout of power sensor 38; As shown in Figure 9, install and fix the additional support frame 37 of specified altitude at general pedestal 26, adopt the space layout of power sensor 38.
Reacting force when described safe automobile air bag launches is three-dimensional force.And different safe automobile air bag experiments are different to the test request of reacting force, and for example some requirement of experiment is tested the normal force of reacting force, and some then requires to test the component of three directions of reacting force.Be provided with different installation sites at general pedestal 26 and be used for installing special-purpose locating rack 25 and the power sensor 38 installed to satisfy the requirement of different safe automobile air bag mechanical test.The special-purpose installation form that locating rack 25 and general pedestal 26 are installed mainly is divided into following three kinds: the first is that the axis of guide is installed, adopt axis of guide structure with special use locating rack 25 is installed, power sensor 38 screw threads are fixedly mounted on the general pedestal 26.When adopting single axis of guide center location structure, slide key is set on the axis of guide, retraining around the Z axis sense of rotation of locating rack 25 installed in special use; The second is that the integrated positioning piece is installed, power sensor 38 is fixed by screws on the general pedestal 26, the special-purpose locating rack 25 of installing places on the power sensor 38, by at general pedestal 26 locating piece being set, the special-purpose X of locating rack 25 and the degree of freedom of Y-direction of installing of constraint installed locating rack 25 with special use and is positioned on the power sensor 38; The third is directly by the helicitic texture in the power sensor 38 locating rack 25 to be installed in special use to connect together with general pedestal 26.
Consult Fig. 5, for guaranteeing versatility and the specificity of safe automobile air bag reacting force proving installation 2, improve the emulation of experiment.Before the experiment, according to physical construction and the layout of power sensor 38 on general pedestal 26 of the physical construction of different safe automobile air bags 24, requirement of experiment, power sensor 38, design specialized is installed locating rack 25 and is installed and clamp to adapt to air bag.By the installation site of power sensor 38 on general pedestal 26, locating rack 25 is installed in special use be installed on the general pedestal 26, adjust the angle of general pedestal 26, make air bag upper surface maintenance level, just finished the location and installation of air bag.When air-bag deployment, reacting force is installed locating rack 25 by special use and is delivered on the power sensor 38.Represented a kind of special-purpose Installation Example that locating rack 25 and general pedestal 26 are installed among the figure.
The lower end of the support column 31 that 4 structures in the described safe automobile air bag reacting force proving installation 2 are identical and the top end face of left side bracing frame 27 and right side bracing frame 34 are threaded, and are connected screw and connect in the upper end of the support column 31 that 4 structures are identical with the air bag restraining plate.The two ends of airbag restraint plate 29 are processed with the strip through hole, and airbag restraint plate 29 can be moved along directions X, guarantee that airbag restraint plate 29 is corresponding with the air bag upper surface.Airbag restraint plate 29 is used for the expansion shape of gasbag is retrained, imitation fascia, the impact that seat etc. launch gasbag.
Consult Figure 10 to Figure 12, the safe automobile air bag development rate in the testing table mechanical part described in the utility model and acceleration test snubber assembly 1 are by 2 bottom location-plates 39 that structure is identical, cushion chamber left plate 40, angular-rate sensor (rotary encoder) 41, cushion chamber cover plate 42, strengthen location-plate 43, cushion chamber right plate 44, rotating shaft 45, acceleration transducer 46, location-plate 47, sensor support post 48, shaft coupling 49, cushion chamber left-hand axis bearing 50, cushion chamber right-hand axis bearing 51, buffering cover plate 52, locating piece 53, cushion chamber header board 54 and throttling valve 55 form.
Described safe automobile air bag development rate and acceleration test snubber assembly 1 mainly contain two aspect functions, are when airbag deployment on the one hand, angular velocity and acceleration that initial angle speed and the initial acceleration of airbag deployment is converted into 52 upsets of buffering cover plate; Be that buffering cover plate 52 and acceleration transducer 46 are played buffering protection function on the other hand, absorb the kinetic energy of buffering cover plate 52 after finishing test, the integrality of protection buffering cover plate 52 and acceleration transducer 46 makes experiment have repetition contrast property.
Cushion chamber compactness firm in structure and leakproofness in described safe automobile air bag development rate and the acceleration test snubber assembly 1 are good.Buffering cover plate 52 is the plate structure spare of rectangle, buffering cover plate 52 1 long edge positions are evenly equipped with the tapped through hole of tapered dowel through hole and mounting screw, the center of buffering cover plate 52 is provided with the tapped through hole that acceleration transducer 46 is installed, buffering cover plate 52 adopts lightweights and firm metal to consist of, and is used for air bag cover plate on the emulation automobile instrument panel.Design weight is generally at 3.0kg/m
2～4.5kg/m
2The recommend adoption honeycomb aluminum plate.
Described cushion chamber left plate 40, cushion chamber cover plate 42, cushion chamber right plate 44 and cushion chamber header board 54 are plate structure spare, cushion chamber left plate 40 is identical with cushion chamber right plate 44 structures, the cushion chamber left plate 40 that the structure that is parallel to each other is identical is connected with the medial surface screw that the rear narrow end surface of cushion chamber right plate 44 is connected with the cushion chamber cover plate, the cushion chamber left plate 40 that cushion chamber header board 54 is identical with the structure that is connected is connected cushion chamber left plate 40 with the front narrow end surface screw of cushion chamber right plate 44, cushion chamber cover plate 42, cushion chamber right plate 44 and cushion chamber header board 54 have formed the cushion chamber in safe automobile air bag development rate and the acceleration test snubber assembly 1.The medial surface top rail of the cushion chamber cover plate 42 in the cushion chamber is equipped with strengthens location-plate 43, improves intensity and the assembly precision of cushion chamber.Screw and pin will cushion cover plate 52 and rotating shaft 45 is connected as a single entity.Rotating shaft 45 is installed in the top of the cushion chamber header board 54 in the cushion chamber by being installed in cushion chamber left-hand axis bearing 50 on cushion chamber left plate 40 and the cushion chamber right plate 44, cushion chamber right-hand axis bearing 51 and 2 identical rolling bearings of structure.Adopt rolling bearing to reduce the friction force that rotating shaft 45 rotations produce, improve the measuring accuracy of whole system.Be processed with vertically in the rotating shaft 45 for the elongated slot that inserts buffering cover plate 52 1 ends, the cell wall direction of the vertical elongated slot in edge is processed with countersunk head tapped through hole and tapered dowel through hole, is used for linking rotating shaft 45 and buffering cover plate 52 as a whole.One end (left side) of rotating shaft 45 is processed into and cooperates the shaft coupling axle of installing with shaft coupling 49, and it is tetragonal body or hexahedron that the other end is processed into square toes, is used for assembly wrench, and effect is to rotate buffering cover plate 52 to reset.The below that the upper end of cushion chamber header board 54 is positioned at buffering cover plate 52 is equipped with locating piece 53, is used for adjusting the initial position of buffering cover plate 52, makes its maintenance level.The bottom of cushion chamber is that the left side of cushion chamber left plate 40 adopts bolt that the identical bottom location-plate 39 of structure is installed with the ground end on the right side of cushion chamber right plate 44, adopt again bolt to pass through bottom location-plate 39 with cushion chamber, exactly, safe automobile air bag development rate and acceleration test snubber assembly 1 are fixed on the Lifting platform 5.Be processed with the strip through hole on the bottom location-plate 39, cushion chamber can be moved along directions X, the acceleration transducer 46 of adjusting on the buffering cover plate 52 overlaps with safe automobile air bag upper surface test point.The bottom of safe automobile air bag development rate and acceleration test snubber assembly 1 is installed on the Lifting platform 5 on the static expansion of safe automobile air bag jacking gear 4 tops, is used for adjusting the distance of buffering cover plate 52 and safe automobile air bag upper surface.
Angular-rate sensor (rotary encoder) 41 in described safe automobile air bag development rate and the acceleration test snubber assembly 1 is installed on the location-plate 47 in rotating shaft 45 left sides, the input end of angular-rate sensor (rotary encoder) 41 links to each other with the left end of rotating shaft 45 by shaft coupling 49, can measure angle and the angular velocity of 52 rotations of buffering cover plate.Because experimentation is short, reaction is fast, and shaft coupling 49 generally adopts positive couplings, guarantees synchronism and the rapidity of angular-rate sensor (rotary encoder) 41 tests.Location-plate 47 is fixed by screws on the identical sensor support post 48 of 3 structures.Sensor support post 48 1 end machining internal threads, other end threading, 3 identical sensor support posts 48 of structure are distributed on spindle central take angular-rate sensor (rotary encoder) 41 on the cylindrical of radius, improve the concentricity of angular-rate sensor (rotary encoder) 41 and rotating shaft 45.Sensor support post 48 external threads one end can replace screw that cushion chamber left-hand axis bearing 50 is fixed on the cushion chamber left plate 40, and the rotating shaft of angular-rate sensor (rotary encoder) 41 is overlapped with the rotation centerline of rotating shaft 45.On the buffering cover plate 52 acceleration transducer 46 is installed, is used for measuring the instantaneous acceleration of buffering cover plate 52.
Consult Fig. 1, the buffering cover plate 52 in described safe automobile air bag development rate and the acceleration test snubber assembly 1 and 29 combinations of airbag restraint plate, to fascia, the seat outside surface carries out emulation.The purpose of experiment is that the imitation safe automobile air bag breaks through instrument panel when launching, and pushes the process that air bag cover plate launches open, adds air bag cover plate, and the impact that the external factor such as instrument panel are launched safe automobile air bag is when providing parameter for the overall design of safe automobile air bag.
The course of work of described safe automobile air bag development rate and acceleration test snubber assembly 1 is as follows: will cushion cover plate 52 and turn to initial position, the position of the directions X of adjustment safe automobile air bag development rate and acceleration test snubber assembly 1 also is fixed on the Lifting platform 5, and the acceleration transducer 46 on the buffering cover plate 52 is overlapped with air bag upper surface central point.Buffering cover plate 52 can according to requirement of experiment, be adjusted by the static jacking gear 4 that launches of safe automobile air bag with the spacing of air bag upper surface on Z-direction.When the moment that safe automobile air bag launches, buffering cover plate 52 is subject to the impulsive force of the gasbag instantaneous expansion generation of safe automobile air bag, beginning High Rotation Speed.At this moment, acceleration and the magnitude of angular velocity of acceleration transducer 46 and angular-rate sensor (rotary encoder) 41 beginning acquisition buffer cover plates 52.The motion process of the buffering cover plate 52 in safe automobile air bag development rate and the acceleration test snubber assembly 1 is divided into 3 stages, i.e. test phase, buffer stage and recovery stage.The test phase scope is at 0 °-120 °, the motion process of this stage imitation automobile instrument panel air bag cover plate when safe automobile air bag launches, the angular velocity and the acceleration that overturn after the impulsive force that the initial velocity that key point is moved on the gasbag during the static expansion of testing automobile air bag and acceleration and buffering cover plate 52 are launched by safe automobile air bag.Buffer stage is at 120 °-180 °, and effect is to absorb the kinetic energy of buffering cover plate 52 after finishing test, protection buffering cover plate 52, and the Speed Reduction that utilizes the air chamber in will cushion cover plate 52 arrives zero.Recovery stage is at 180 °-270 °, and buffering cover plate 52 is fallen by the free gravity rotation, turns to the final position.
Throttling valve 55 is installed on the cushion chamber header board 54, and effect is at the flow of buffer stage by control cushion chamber eliminating gas, regulates in the cushion chamber and the outer air pressure difference of cushion chamber, reaches cushioning the buffering protection function of cover plate 52.
The circular arc center of circle of the cushion chamber cover plate 42 on the cushion chamber and the rotation center decentraction of the buffering cover plate 52 on the cushion chamber make buffering cover plate 52 with respect to the cushion chamber eccentric rotary.The arc track of buffering cover plate 52 motions forms a spiral of Archimedes with respect to the circular arc center of circle of cushion chamber cover plate 42, and the gap of namely cushioning cover plate 52 and cushion chamber cover plate 42 increases with the anglec of rotation and diminishes gradually so better enhancing buffering effect.
The gap of the design size of cushion chamber, throttling valve model, cushion chamber and buffering cover plate and cushion chamber internal and external equilibrium pressure differential can draw by converting with next group fluid mechanics computing formula.
When buffering cover plate 52 rotated under buffer status, the variation of cushion chamber internal gas pressure obtained by formula (1):
P-intracavity gas pressure, the .Pa of unit;
V-intracavity gas volume, the .cm of unit
3
T-intracavity gas temperature, unit. ℃;
K-constant
When buffering cover plate 52 rotated under buffer status, the variation formula of cushion chamber energy was:
E
k＝∫ΔP·ΔV·dα （2）
E
kEnergy in the-cushion chamber, the .J of unit;
The air pressure change value of Δ P-cushion chamber, the .Pa of unit;
Δ V-cushion chamber inner volume changing value, the .mm of unit
3
The anglec of rotation of α-buffering cover plate, the .Rad of unit;
When buffering cover plate 52 rotated under buffer status, the variation formula of cushion chamber pore flow was:
The q-gas flow, the .m of unit
3/ h;
C
d-coefficient of flow
A
0-vent port area, the .m2 of unit
Δ p-cavity external and internal pressure is poor, the .Pa of unit;
ρ-gas density, the .kg/m of unit
3
The cushioning principle of described safe automobile air bag development rate and acceleration test snubber assembly 1:
Whole safe automobile air bag development rate and acceleration test snubber assembly 1 main part are equivalent to an accumulator, are the gas compression energy with the kinetic transformation that cushions cover plate 52.Pressure gas is discharged by the vent port of cushion chamber front portion, consumes the gas compression energy in the cushion chamber, reduces the speed of buffering cover plate 52.Make buffering cover plate 52 when moving to the final position, kinetic energy reduces to can not destroy buffering cover plate 52.The gas pressure intensity changing value can be obtained by formula (1) in the cushion chamber, and obtain compression energy in the cushion chamber by formula (2), and be aided with law of conservation of energy and set up the energy equilibrium formula, relation between balance compression energy, kinetic energy and the loss heat energy thereof, the size of required vent port in the time of can calculating the inside and outside gas pressure intensity of cushion chamber and reach ideal effect by formula (3) at last.Can calculate the relevant design parameter of cushion chamber in safe automobile air bag development rate and the acceleration test snubber assembly 1 by above equation.And can the throttling valve 55 in the cushion chamber be adjusted according to the difference of testing requirements, guarantee security and the accuracy of whole device.
Consult Figure 13, digital image acquisition analysis and Control part described in the utility model can be divided into air bag controlled part, high-speed image sampling part and data acquisition process part on function.Mainly formed by industrial computer, multi-channel synchronous data acquisition card, signal condition module, power sensor 38, angular-rate sensor (rotary encoder) 41, acceleration transducer 46, apparatus to cause bursting, controller, high-speed camera and application software.
Described safe automobile air bag control section is comprised of controller and industrial computer, and effect is apparatus to cause bursting, high-speed camera and the multi-channel synchronous data acquisition card of controlling safe automobile air bag, the work of coordinating each module; The high-speed image sampling part mainly is comprised of high-speed camera, is responsible for gathering the view data of experiment; The data acquisition process part mainly is comprised of multi-channel synchronous data acquisition card, signal condition module, industrial computer and application software, and effect is data acquisition, analysis and preservation.
Described digital image acquisition analysis and Control part can realize control and the data collection and analysis of safe automobile air bag and high-speed camera are processed.Because whole static duration of run is extremely lacked (ms level), safe automobile air bag integration test testing table adopts the multi-channel synchronous High speed data acquisition, can carry out high-speed synchronous collection and moment analysis to a plurality of signals simultaneously, guarantee accuracy and the real-time of experimental data.
The principle of work of safe automobile air bag integration test testing table described in the utility model:
When the experiment beginning, assign instruction by the human-computer interaction interface on the industrial computer to controller, this Time Controller will send trigger pip to high-speed camera and multi-channel synchronous data acquisition card simultaneously, start video camera and take in advance, drive the A/D circuit and sample.Then controller sends trigger pip from the trend apparatus to cause bursting behind 5ms, sends a trigger pulse to the gas generator of air bag, starts air bag, begins test.High-speed camera will be finished the image acquisition in the whole experiment; Angular velocity and the acceleration of the reacting force of safe automobile air bag, buffering cover plate are finished collection by angular-rate sensor (rotary encoder) 41 and acceleration transducer 46.Angular-rate sensor (rotary encoder) 41 is sent in the signal condition module with the simulating signal that acceleration transducer 46 produces, conditioning module is settling signal amplification, filtering etc., and converts the signal that gathers to standard signal that capture card can identify and be sent in the multi-channel synchronous data acquisition card.Multi-channel synchronous data acquisition card converts a plurality of standard signals to digital quantity simultaneously and is delivered to and carries out analyzing and processing in the industrial computer, and automatic save data and generation laboratory report.After off-test, controller stops video camera work from trend high-speed camera transmitted signal.
Claims (6)
1. safe automobile air bag integration test testing table, comprise the testing table mechanical part, it is characterized in that described testing table mechanical part is comprised of safe automobile air bag development rate and acceleration test snubber assembly (1), safe automobile air bag reacting force proving installation (2) and test-bed (3);
Test-bed (3) is comprised of testing table lower carriage and the static jacking gear (4) that launches of safe automobile air bag, described testing table lower carriage is to adopt aluminium alloy extrusions to be mounted to the tower structure spare of cuboid as supporting leg and crossbeam, tests table top (23) and is installed on the top end face of tower structure spare that the testing table lower carriage is cuboid; The static jacking gear (4) that launches of safe automobile air bag is installed in a side of testing table top (23), safe automobile air bag development rate and acceleration test snubber assembly (1) are installed in the static upper end of launching jacking gear (4) of safe automobile air bag in the test-bed (3), and safe automobile air bag reacting force proving installation (2) is installed on the test table top (23) in the static the place ahead of launching jacking gear (4) of safe automobile air bag in the test-bed (3); Locking guide rail (17) and pressing plate (16) vertically are installed on the inboard end face of the left side stand component of safe automobile air bag reacting force proving installation (2) (27) and right side bracing frame (34), and safe automobile air bag is static to launch the guide plate (7) in the lifting dress (4) and locks guide rail (17) to cooperate to be installed as with pressing plate (16) and be slidingly connected.
2. according to safe automobile air bag integration test testing table claimed in claim 1, it is characterized in that the static jacking gear (4) that launches of described safe automobile air bag comprises Lifting platform (5), worm gear screw (6), guide plate (7), leading screw (8), 4 linear roller bearings (9) that structure is identical, 4 guide pillars (10) that structure is identical, 4 lifting table support columns (11) that structure is identical, top chock (12), 1 bugle contact ball bearing (13), step (14), taper roll bearing (15), 2 pressing plates (16) that structure is identical, 2 locking guide rails (17) that structure is identical, 2 lifting table reinforcements (18) that structure is identical, worm screw (19), 2 worm shaft bearings (20) that structure is identical, lifting table foundation plate (21) and 22 bugle contact ball bearings (22) that structure is identical;
Four jiaos of described lifting table foundation plate (21) adopt bolt that four linear roller bearings (9) and top chocks (12) that structure is identical are installed with the center, lifting table foundation plate (21) is fixed on the test table top (23) by 4 identical lifting table support column (11) and screws of structure again, adopt bolt that step (14) is installed at test table top (23), step (14) overlaps with the axis of rotation of top chock (12), worm gear screw (6) adopts 1 bugle contact ball bearing (13) and taper roll bearing (15) to be installed on top chock (12) and the step (14), the 2 bugle contact ball bearings (22) that worm gear screw (6) the worm shaft bearing (20) identical with adopting 2 structures is identical with 2 structures are installed in the worm screw (19) of testing on the table top (23) and are connected with a joggle, the axis of rotation square crossing of worm gear screw (6) and worm screw (19), the guide pillar (10) that 4 structures are identical and the upper end of leading screw (8) are fixedly connected with Lifting platform (5), insert in the identical linear roller bearing (9) of 4 structures and the worm gear screw (6) as being slidingly connected and being threaded in the identical guide pillar (10) of 4 structures and the stage casing of leading screw (8), and the guide pillar (10) that 4 structures are identical and the lower end insertion of leading screw (8) are tested table top (23) and gone up in the corresponding through hole; The bottom surface of Lifting platform (5) is connected 7 with guide plate) lifting table reinforcement (18) the vertical connection identical with 2 block structures, the vertical connection of an end of the lifting table reinforcement (18) that a side of guide plate (7) is identical with 2 block structures.
3. according to safe automobile air bag integration test testing table claimed in claim 1, it is characterized in that described safe automobile air bag reacting force proving installation (2) by special use locating rack (25) is installed and general pedestal (26) forms;
Described general pedestal (26) comprises left side bracing frame (27), left side locking plate (28), airbag restraint plate (29), runing rest (30), support column (31), right side locking plate (32), worm gear (33), right side bracing frame (34), worm screw (35) and worm shaft bearing (36) that 4 root architectures are identical;
It is upper for being rotationally connected with right side bracing frame (34) that left-handed rotating shaft on the runing rest (30) and dextral shaft adopt rolling bearing to be installed in left side bracing frame (27), be fitted with left side locking plate (28) and right side locking plate (32) on the left-handed rotating shaft of runing rest (30) and the dextral shaft, the worm gear (33) that install on the right side of right side locking plate (32) is connected with a joggle with the worm screw (35) that is installed on the right side bracing frame (34), worm screw (35) one ends are processed into the tetragonal body of being convenient to load and unload rotary spanner, left side locking plate (28) and right side locking plate (32) are installed in the left-handed rotating shaft and dextral shaft of runing rest (30) by key, by nut right side locking plate (32) and worm gear (33) on the left side locking plate (28) in the left-handed rotating shaft and the dextral shaft are fixed on the runing rest (30), by screw the left side locking plate (28) in the general pedestal (26) and right side locking plate (32) are fixed on left side bracing frame (27) and the right side bracing frame (34), lower end and the left side bracing frame (27) of the support column (31) that 4 structures are identical are threaded with the top end face of right side bracing frame (34), and the upper end of the support column (31) that 4 structures are identical is connected 29 with the air bag restraining plate) bolt connects; The special-purpose locating rack (25) of installing is installed on the runing rest (30).
4. according to safe automobile air bag integration test testing table claimed in claim 3, it is characterized in that, described runing rest (30) is to adopt square steel pipe welded to be processed into the tower structure spare of U font, be that runing rest (30) is by the anticlockwise cradle wall, consist of at the bottom of right rotation cradle wall and the runing rest, anticlockwise cradle wall and right rotation cradle wall be installed in parallel to each other at the bottom of the runing rest two ends and and the runing rest dolly straight, on the left surface of the anticlockwise cradle wall of runing rest (30) with on the right flank of right rotation cradle wall left-handed rotating shaft and the dextral shaft vertical with the left and right side are installed, be processed with keyway on the left-handed rotating shaft of runing rest (30) and the dextral shaft, and by screw left-handed rotating shaft and dextral shaft are installed on anticlockwise cradle wall and the right rotation cradle wall in the runing rest (30) as being fixedly connected with, the axis of rotation of left-handed rotating shaft and dextral shaft increases steel plate for installing force sensor (38) on the runing rest bottom surface of runing rest (30) on same axis.
5. according to safe automobile air bag integration test testing table claimed in claim 3, it is characterized in that, the upper strong sensor (38) of installing of described runing rest (30), be the layout of single-point layout power sensor (38), the horizontal layout of 3 upper layout power sensors (38) at the bottom of the runing rest of power sensor (38) in runing rest (30), the horizontal layout of 4 upper layout power sensors (38), and in the space layout of runing rest (30) with the upper layout power sensor (38) of additional support frame (37).
6. according to safe automobile air bag integration test testing table claimed in claim 1, it is characterized in that described safe automobile air bag development rate and acceleration test snubber assembly (1) comprise 2 bottom location-plates (39) that structure is identical, cushion chamber left plate (40), angular-rate sensor (41), cushion chamber cover plate (42), strengthen location-plate (43), cushion chamber right plate (44), rotating shaft (45), acceleration transducer (46), location-plate (47), sensor support post (48), shaft coupling (49), cushion chamber left-hand axis bearing (50), cushion chamber right-hand axis bearing (51), buffering cover plate (52), locating piece (53), cushion chamber header board (54) and throttling valve (55);
The cushion chamber left plate (40) that the structure that is parallel to each other is identical is connected 42 with the rear narrow end surface of cushion chamber right plate (44) with the cushion chamber cover plate) the medial surface screw be connected, the cushion chamber left plate (40) that cushion chamber header board (54) is identical with the structure that is connected is connected with the front narrow end surface screw of cushion chamber right plate (44), the medial surface top rail of cushion chamber cover plate (42) is equipped with strengthens location-plate (43), buffering cover plate (52) adopts screw and pin and rotating shaft (45) to be connected as a single entity, rotating shaft (45) is by being installed in the cushion chamber left-hand axis bearing (50) on cushion chamber left plate (40) and the cushion chamber right plate (44), cushion chamber right-hand axis bearing (51) and 2 identical rolling bearings of structure are installed in the top of cushion chamber header board (54), one end of rotating shaft (45) is equipped with shaft coupling (49), the position that is positioned at buffering cover plate (52) below of cushion chamber header board (54) upper end is equipped with locating piece (53), the left side of cushion chamber left plate (40) adopts bolt that the identical bottom location-plate (39) of structure is installed with the bottom on the right side of cushion chamber right plate (44), the employing sensor support post (48) that angular-rate sensor (41) is installed in rotating shaft (45) left side is installed on the location-plate (47) on the cushion chamber left plate (40), the input end of angular-rate sensor (41) is connected 45 with rotating shaft) shaft coupling (49) of left end connects, the upper acceleration transducer (46) of installing of buffering cover plate (52), throttling valve (55) is installed on the cushion chamber header board (54).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220391988 CN202710330U (en) | 2012-08-08 | 2012-08-08 | Test bench for comprehensive test of automobile safety airbag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220391988 CN202710330U (en) | 2012-08-08 | 2012-08-08 | Test bench for comprehensive test of automobile safety airbag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202710330U true CN202710330U (en) | 2013-01-30 |
Family
ID=47590621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220391988 Expired - Fee Related CN202710330U (en) | 2012-08-08 | 2012-08-08 | Test bench for comprehensive test of automobile safety airbag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202710330U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788705A (en) * | 2012-08-08 | 2012-11-21 | 吉林大学 | Test bench for comprehensive test of automotive safety airbag |
| CN107091749A (en) * | 2017-05-10 | 2017-08-25 | 中国汽车技术研究中心 | Test platform, the device and method of moment demarcation are acted on for vehicular sideview curtain airbag |
| CN113176095A (en) * | 2020-01-27 | 2021-07-27 | 玛泽森创新有限公司 | Test device for an airbag module |
| CN114018589A (en) * | 2021-10-25 | 2022-02-08 | 中汽研汽车检验中心（天津）有限公司 | Method and device for determining air bag ejection speed, electronic equipment and medium |
| CN115683663A (en) * | 2022-12-30 | 2023-02-03 | 南京卡仕福汽车技术有限公司 | Automobile safety airbag gas generator performance test method based on high-speed camera |
-
2012
- 2012-08-08 CN CN 201220391988 patent/CN202710330U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788705A (en) * | 2012-08-08 | 2012-11-21 | 吉林大学 | Test bench for comprehensive test of automotive safety airbag |
| CN102788705B (en) * | 2012-08-08 | 2014-12-24 | 吉林大学 | Test bench for comprehensive test of automotive safety airbag |
| CN107091749A (en) * | 2017-05-10 | 2017-08-25 | 中国汽车技术研究中心 | Test platform, the device and method of moment demarcation are acted on for vehicular sideview curtain airbag |
| CN107091749B (en) * | 2017-05-10 | 2023-12-01 | 中国汽车技术研究中心 | Test platform, device and method for calibrating action time of side air curtain air bag of vehicle |
| CN113176095A (en) * | 2020-01-27 | 2021-07-27 | 玛泽森创新有限公司 | Test device for an airbag module |
| EP3854640A1 (en) | 2020-01-27 | 2021-07-28 | Motherson Innovations Company Limited | Testing device for an airbag module |
| US11630033B2 (en) | 2020-01-27 | 2023-04-18 | Motherson Innovations Company Limited | Testing device for an airbag module |
| CN114018589A (en) * | 2021-10-25 | 2022-02-08 | 中汽研汽车检验中心（天津）有限公司 | Method and device for determining air bag ejection speed, electronic equipment and medium |
| CN114018589B (en) * | 2021-10-25 | 2024-03-15 | 中汽研汽车检验中心（天津）有限公司 | Method and device for determining airbag ejection speed, electronic equipment and medium |
| CN115683663A (en) * | 2022-12-30 | 2023-02-03 | 南京卡仕福汽车技术有限公司 | Automobile safety airbag gas generator performance test method based on high-speed camera |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102788705B (en) | Test bench for comprehensive test of automotive safety airbag | |
| CN202710330U (en) | Test bench for comprehensive test of automobile safety airbag | |
| CN101398342B (en) | Simulation test device for automobile side collision | |
| CN104089781B (en) | Novel hinge for vehicle door, stop integration test stand | |
| CN101408475B (en) | Pendulum type frontal collision test stand of truck driver's cab | |
| CN104849067B (en) | A kind of body test chassis and adjustment method | |
| JP2007292695A (en) | Crash testing device and crash test method for automobile body | |
| CN111855042A (en) | Stress measuring device under collision impact load | |
| CN102087104A (en) | Three-coordinate conversion machine for measuring aircraft quality characteristics, test system and method | |
| CN102768119B (en) | Automobile safety air bag unfolding speed and acceleration test buffering device | |
| CN108414178B (en) | Impact device with buffering function and application method thereof | |
| CN202710230U (en) | Device for testing counter-acting force of automobile safety airbag | |
| JPWO2020067244A1 (en) | Collision performance evaluation test method and equipment for automobile body parts | |
| CN202119613U (en) | Adjustable pedal device for simulating crash sled test | |
| CN202710316U (en) | Automobile safety air bag unfolding speed and acceleration test buffering device | |
| CN208109366U (en) | A kind of General Motors door internal decoration plate static stiffness test device | |
| CN102809457B (en) | Device for measuring counter-acting force of automobile safety airbag | |
| CN106289820B (en) | The flexible verifying equipment integrated for rail vehicle | |
| JP6694171B1 (en) | Crash performance evaluation test method and device for automobile body parts | |
| CN112146891A (en) | Safety belt installation module, automobile safety belt dynamic test device and test method | |
| CN105466705B (en) | Ten thousand become aluminium section bar car end fixing device | |
| CN207764046U (en) | A kind of A columns roof side rail static loading experimental rig | |
| Kerrigan et al. | Test methodology and initial results from a dynamic rollover test system | |
| CN205262761U (en) | Car gasbag subassembly testing arrangement | |
| CN203486152U (en) | Satellite universal unfolding support frame |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20150808 |
|
| EXPY | Termination of patent right or utility model |