CN210690087U - Formula collision test platform truck is adjusted to dual-purpose barycenter of curved straight way - Google Patents
Formula collision test platform truck is adjusted to dual-purpose barycenter of curved straight way Download PDFInfo
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- CN210690087U CN210690087U CN201921655959.3U CN201921655959U CN210690087U CN 210690087 U CN210690087 U CN 210690087U CN 201921655959 U CN201921655959 U CN 201921655959U CN 210690087 U CN210690087 U CN 210690087U
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Abstract
The utility model relates to a formula collision test platform truck is adjusted to dual-purpose barycenter in curved straight way, walk capable unit and barycenter accommodate unit etc. including frame unit, retractable longeron unit, one number. When rigid connection is adopted between the frame and the bogie, the test trolley does not have steering capacity, so that the test cost is greatly increased. The utility model discloses in at the shelf location center of turning to seat and left and right slide rail unit, through relaxing the locking lead screw in left and right slide rail unit, make whole car possess the steering ability, through the locking lead screw in the locking left and right slide rail unit, make whole car and walk rigid connection between the line unit, strengthened test bench's commonality greatly, barycenter adjusting unit and retractable longeron unit mutually support, can realize that platform truck barycenter position two degrees of freedom removes on a large scale, increase platform truck commonality.
Description
Technical Field
The utility model belongs to rail vehicle bump test field relates to a formula bump test platform truck is adjusted to dual-purpose barycenter of curved road and straight road. More specifically, when rigid connection is adopted between the frame and the bogie, the test trolley does not have the steering capacity, so that the test cost is greatly increased, and when flexible connection is adopted between the frame and the bogie, the flexible connection can absorb energy in the test, so that the accuracy of test data is reduced. The utility model discloses in at the shelf location center of turning to seat and left and right slide rail unit, through relaxing the locking lead screw in left and right slide rail unit, make whole car possess the steering ability, through the locking lead screw in the locking left and right slide rail unit, make whole car and walk rigid connection between the line unit, strengthened test bench's commonality greatly, barycenter adjusting unit and retractable longeron unit mutually support, can realize that platform truck barycenter position two degrees of freedom removes on a large scale, increase platform truck commonality.
Background
The collision test trolley is the most direct and effective method for researching the rail vehicle collision, but the cost is high and the method is dangerous when a real vehicle is adopted, and the current common method is to install a car coupler buffer device, an anti-creeper, a crushing pipe, a structure energy absorption area, an end energy absorption system and the like on the collision test trolley, use the test trolley to replace the real vehicle for testing and research the collision performance of components. Because the platform truck can recycle, and processing is simple, very big reduction test cost and danger, when adopting rigid connection between case of the axle and the bogie, make the test platform truck not possess the steering capacity, greatly increased test cost, when adopting flexonics between case of the axle and the bogie, in the experiment, flexonics can absorb the energy, reduces the test data accuracy.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a dual-purpose barycenter regulation formula crash test platform truck in curved straight way to the not enough of current device. The utility model discloses at the shelf location center of turning to seat and left and right slide rail unit, through the locking lead screw of relaxing in the left and right slide rail unit, make whole car possess the steering ability, through the locking lead screw in the locking left and right slide rail unit, make whole car and walk rigid connection between the line unit, strengthened the commonality of test bench car greatly, barycenter adjusting unit and retractable longeron unit mutually support, can realize that platform truck barycenter position two degrees of freedom removes on a large scale, increase the platform truck commonality.
The technical scheme of the utility model is that:
the utility model provides a formula crash test platform truck is adjusted to dual-purpose barycenter of curved straight track, includes: the frame comprises a frame unit, a telescopic longitudinal beam unit, a first walking unit, a second walking unit and a mass center adjusting unit, wherein the mass center adjusting unit is fixedly arranged in the middle of the frame unit, two ends of the telescopic longitudinal beam unit are respectively movably connected with an end wall inclined strut unit and the mass center adjusting unit, and the first walking unit and the second walking unit are respectively and fixedly arranged on a left side slide rail unit and a right side slide rail unit; mutual rotation or rigid connection between the first walking unit or the second walking unit and the frame unit is realized by adjusting the left side sliding rail unit and the right side sliding rail unit, so that the trolley has the steering or straight track function; through the mutual cooperation of the mass center adjusting unit 5 and the telescopic longitudinal beam unit 2, the two-degree-of-freedom large-range movement of the mass center position of the trolley is realized, and the universality of the trolley is improved.
Preferably, the frame unit includes: two sets of center seat, two sets of left side slide rail units and two sets of right side slide rail units turn to, wherein, two sets of center seat, two sets of left side slide rail units and two sets of right side slide rail units are symmetry fixed mounting respectively at frame unit both ends, and headwall bracing unit fixed mounting is in the one end of frame unit.
Preferably, the retractable stringer unit includes: left side longeron, right side longeron, extension roof beam and fixed plate, left side longeron and right side longeron pass through the fixed plate and are connected with the extension roof beam, the extension roof beam comprises the multistage to as an organic whole by fixed plate fixed connection, extension roof beam quantity can increase and decrease for adjust retractable longeron unit length.
Preferably, the first running unit and the second running unit have the same structure and comprise: plain type bogie and steering center axle unit, plain type bogie central symmetry, left side slide rail unit and right side slide rail unit lower extreme are installed respectively on the plain type bogie, steering center axle unit lower extreme is installed at the plain type bogie positive centre, and the three is located same straight line, install respectively on the frame unit left side slide rail unit and right side slide rail unit upper end, steering center axle unit upper end fixed mounting is in the steering center seat in the frame unit.
Preferably, the steering central shaft unit consists of a steering central shaft and an expansion sleeve which are of an integral structure, wherein the upper part of the steering central shaft is connected with a steering central seat and is the rotation center of the whole walking unit, and the expansion sleeve is sleeved on an intermediate shaft of the simple bogie.
Preferably, the left side rail unit and the right side rail unit have the same structure, and include: go up slide rail, slide rail draw runner and lower slide rail, go up the slide rail and be located below the frame unit, the slide rail draw runner install in last slide rail and with slide rail roll fit down, be equipped with the pressure strip on the frame unit, pressure strip, frame unit, last slide rail and slide rail draw runner pass through lead screw fixed connection and be in the same place, the slide rail passes through the bearing frame down and installs on plain type bogie, go up the slide rail both ends and be equipped with the locking lead screw mount pad respectively, install locking lead screw and No. two locking lead screws on the locking lead screw mount pad respectively, through the distance of adjusting locking lead screw and No. two locking lead screws and bearing frame, realize locking between bearing frame and the frame unit and relax.
Preferably, the center of mass adjusting unit includes: the lifting frame unit is fixedly arranged on the frame unit, the front end of the lifting frame unit is connected with the telescopic longitudinal beam unit, and the lifting frame unit is adjusted to be in the left and right positions on the frame unit through the telescopic longitudinal beam unit so as to realize the left and right adjustment of the center of mass of the whole vehicle; the counterweight unit is connected with a hydraulic cylinder in the lifting frame unit through a steel wire, and the stepless adjustment of the counterweight unit in the height direction is realized by adjusting the extension and contraction of a piston rod of the hydraulic cylinder.
Preferably, the lifting frame unit comprises: many vertical beams, crossbeam and two hoisting longeron units, two hoisting longeron units include: the hydraulic cylinder is fixed at one end, and a piston rod slides leftwards and rightwards in a guide groove of the hydraulic cylinder and is connected with the counterweight unit through two steel wires and the first and second right belt wheels respectively.
Preferably, one of the two steel wires is connected with the right side of the counterweight unit through a right belt wheel II, the other steel wire is connected with the left side of the counterweight unit through a right belt wheel I and a left belt wheel I, the hydraulic cylinder is connected with an external oil source, and the integral synchronous lifting of the counterweight unit is realized by controlling the hydraulic cylinder.
Compared with the prior art, the beneficial effects of the utility model are that:
formula collision test platform truck is adjusted to dual-purpose barycenter in curved straight way, install on the frame and turn to center seat and left and right slide rail unit, through the locking lead screw that relaxs in left and right slide rail unit, make whole car possess the ability of turning to, through the locking lead screw in the left and right slide rail unit of locking, make whole car and walk rigid connection between the walking unit, strengthened the commonality of test platform truck greatly, barycenter accommodate unit and retractable longeron unit mutually support, can realize that platform truck barycenter position two degrees of freedom removes on a large scale, increase platform truck commonality.
Drawings
Fig. 1 is an axonometric projection view of the dual-purpose center of mass adjustable crash test trolley for curved and straight roads according to the present invention;
fig. 2 is a front projection view of the dual-purpose center of mass adjustable crash test trolley for curved and straight roads according to the present invention;
fig. 3 is a bottom projection view of the carriage unit of the present invention;
fig. 4 is an isometric projection view of the retractable longitudinal beam unit of the present invention;
FIG. 5 is an isometric view of the traveling unit of the present invention;
fig. 6 is a side projection view of the slide rail unit according to the present invention;
fig. 7 is an axonometric view of the steering center shaft unit according to the present invention;
fig. 8 is an axial side projection view of the center of mass adjusting unit according to the present invention;
fig. 9 is an isometric projection view of a lifting frame unit according to the present invention;
fig. 10 is an isometric projection view of a lift rail unit according to the present invention;
fig. 11 is an axial side projection view of the curved-straight track dual-purpose center of mass adjustable crash test trolley of the present invention, with the center of mass on the right side;
fig. 12 is a side-by-side projection view of the curved-straight dual-purpose center of mass adjustable crash test trolley of the present invention, with the center of mass at the left side;
fig. 13 is an axial side projection view of the curved-straight track dual-purpose center of mass adjustable crash test trolley of the present invention, with the center of mass at a low position;
figure 14 is dual-purpose barycenter regulation formula crash test platform truck in curved straight track, the barycenter is in the axial side projection view of eminence.
In the figure: 1. the simple type steering frame comprises a frame unit, 2 parts of a telescopic longitudinal beam unit, 3 parts of a first traveling unit, 4 parts of a second traveling unit, 5 parts of a mass center adjusting unit, 6 parts of a steering center seat, 7 parts of a left side sliding rail unit, 8 parts of a right side sliding rail unit, 9 parts of a left side longitudinal beam, 10 parts of a right side longitudinal beam, 11 parts of an elongated beam, 12 parts of a fixing plate, 13 parts of a simple type steering frame, 14 parts of a steering center shaft unit, 15 parts of a pressing plate, 16 parts of an upper sliding rail, 17 parts of a first locking screw rod, 18 parts of a second locking screw rod, 19 parts of a sliding rail sliding strip, 20 parts of a lower sliding rail, 21 parts of a bearing seat, 22 parts of a steering center shaft, 23 parts of an expansion sleeve, 24 parts of a lifting frame unit, 25 parts of a balance weight unit, 26 parts of a lifting longitudinal beam unit, 27 parts of a longitudinal beam, 28 parts of a left side belt.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, which enable those skilled in the art to practice the invention with reference to the accompanying description.
Referring to fig. 1, 2 and 3, the dual-purpose center of mass adjustable crash test trolley for curved roads comprises: a frame unit 1, a telescopic longitudinal beam unit 2, a first walking unit 3, a second walking unit 4 and a mass center adjusting unit 5, the frame unit 1 is a main body part and comprises two groups of steering center seats 6, two groups of left side slide rail units 7 and two groups of right side slide rail units 8, wherein, two groups of steering center seats 6, two groups of left side slide rail units 7 and two groups of right side slide rail units 8 are respectively and symmetrically and fixedly arranged at two ends of the frame unit 1, the end wall inclined strut unit is fixedly arranged at one end of the frame unit 1, the telescopic longitudinal beam unit 2 and the mass center adjusting unit 5 are both fixedly arranged on the frame unit 1, the front end of the telescopic longitudinal beam unit 2 is connected with an end wall inclined strut unit, the rear end is connected with a mass center adjusting unit 5, the first traveling unit 3 and the second traveling unit 4 are fixedly arranged on a left side sliding rail unit 7 and a right side sliding rail unit 8 at the bottom of the frame unit 1 respectively.
Referring to fig. 4, the retractable stringer unit 2 includes: left side longeron 9, right side longeron 10, extension beam 11 and fixed plate 12, left side longeron 9 and right side longeron 10 connect through fixed plate 12 and constitute retractable longeron unit 2's minimum length, increase and decrease the quantity of extension beam 11 and fixed plate 12 according to actual need, realize the regulation to retractable longeron unit 2 length, make it have better commonality.
Referring to fig. 5 and 7, the first traveling unit 3 and the second traveling unit 4 have the same structure, are respectively and symmetrically and fixedly installed at two ends of the frame unit 1, and include a left side rail unit 7, a right side rail unit 8, a simple bogie 13 and a steering center shaft unit 14, the simple bogie 13 is a central symmetrical structure, the lower ends of the left side rail unit 7 and the right side rail unit 8 are respectively installed at two ends of the simple bogie 13, the lower end of the steering center shaft unit 14 is installed in the middle of the simple bogie 13, and the three are located on the same straight line, the upper ends of the left side rail unit 7 and the right side rail unit 8 are respectively installed on the frame unit 1, the upper end of the steering center shaft unit 14 is fixedly installed in a steering center seat 6 in the frame unit 1, and the mutual rotation between the first traveling unit 3 or the second traveling unit 4 and the frame unit 1 can be realized by adjusting the left side rail unit 7 and the right side rail unit 8, thereby enabling the trolley to have a steering function.
Referring to fig. 6, the left side slide rail unit 7 and the right side slide rail unit 8 have the same structure, and include a pressing plate 15, an upper slide rail 16, a first locking screw 17, a second locking screw 18, a slide rail slide bar 19, a lower slide rail 20 and a bearing seat 21, wherein the pressing plate 15 is fixedly installed on the frame unit 1, the upper slide rail 16 is fixedly installed below the frame unit 1, the upper half of the slide rail slide bar 19 is fixedly installed in the upper slide rail 16, the pressing plate 15, the frame unit 1, the upper slide rail 16 and the slide rail slide bar 19 are fixedly connected together through screws, two ends of the upper slide rail 16 are respectively provided with a locking screw installation seat, the first locking screw 17 and the second locking screw 18 are respectively fixedly installed in an installation seat of the locking screw of the upper slide rail 16, the lower portion of the slide rail slide bar 19 is installed inside the lower slide rail 20, and a rolling body (not shown in the figure) is arranged, the lower sliding rail 20 is fixedly arranged on a bearing seat 21, the bearing seat 21 is fixedly arranged on the simple bogie 13, the first locking screw 17 and the second locking screw 18 are both connected with the bearing seat 21, locking and loosening between the bearing seat 21 and the frame unit 1 can be realized by adjusting the distance between the first locking screw 17 and the second locking screw 18 and the bearing seat 21, the steering central shaft unit 14 mainly comprises a steering central shaft 22 and an expansion sleeve 23, wherein the upper part of the steering central shaft 22 is connected with the steering central seat 6 and is the rotation center of the whole walking unit, and the inner side and the outer side of the expansion sleeve 23 are respectively connected with the simple bogie 13 and the steering central shaft 22.
Referring to fig. 8, the center of mass adjusting unit 5 includes a lifting frame unit 24 and a counterweight unit 25, wherein the lifting frame unit 24 is fixedly mounted on the frame unit 1, the front end is connected with the retractable longitudinal beam unit 2, the lifting frame unit 24 is matched with the retractable longitudinal beam unit 2 in length, the center of mass adjusting unit 5 can move left and right on the frame unit 1, the function of adjusting the center of mass of the whole vehicle is achieved, the counterweight unit 25 is connected with a hydraulic cylinder 29 in the lifting frame unit 24 through a steel wire, and the stepless adjustment of the counterweight unit 25 in the height direction can be achieved by adjusting the position of the hydraulic cylinder 29, so that the two-degree-of-freedom adjustment of the center of mass of the whole vehicle is achieved, and the whole vehicle has better universality.
Referring to fig. 9 and 10, the lifting frame unit 24 includes a plurality of vertical beams, a plurality of cross beams, and two lifting longitudinal beam units 26, the two lifting longitudinal beam units 26 are similar in structure and include a longitudinal beam 27, a left side belt pulley 28, a hydraulic cylinder 29, a hydraulic cylinder guide groove 30, a right side first belt pulley 31 and a right side second belt pulley 32, wherein the left side belt pulley 28 is fixedly installed on the left side of the longitudinal beam 27, the right side first belt pulley 31 and the right side second belt pulley 32 are both fixedly installed on the right side of the longitudinal beam 27, and are located on a straight line with the left side belt pulley 28 and the right side first belt pulley 31, one end of the hydraulic cylinder 29 is fixedly installed on the longitudinal beam 27, the other end is installed in the hydraulic cylinder guide groove 30 and can slide left and right on the hydraulic cylinder guide groove 30, a single hydraulic cylinder 29 is respectively connected with the counterweight unit 25 through two steel wires, another steel wire is connected with the left side of the counterweight unit 25 by bypassing the first right belt wheel 31 and the left belt wheel 28, the hydraulic cylinder 29 is connected with an external oil source, and the integral synchronous lifting of the counterweight unit 25 can be realized by controlling the amount of hydraulic oil in the hydraulic cylinder 29, so that the structure is simpler.
Referring to fig. 11, the effect diagram of the dual-purpose mass center adjusting type crash test trolley for the curved and straight tracks when the mass center is located on the right side is shown.
Referring to fig. 12, the effect diagram of the dual-purpose mass center adjusting type crash test trolley for the curved and straight tracks when the mass center is located on the left side is shown.
Referring to fig. 13, the effect diagram of the dual-purpose mass center adjusting type crash test trolley for the curved and straight tracks when the mass center is located at the low position is shown.
Referring to fig. 14, the effect diagram of the dual-purpose mass center adjusting type crash test trolley for the curved and straight tracks when the mass center is located at a high position is shown.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (9)
1. The utility model provides a formula crash test platform truck is adjusted to dual-purpose barycenter of curved straight track, includes: the frame comprises a frame unit, a telescopic longitudinal beam unit, a first walking unit, a second walking unit and a mass center adjusting unit, and is characterized in that the mass center adjusting unit is fixedly arranged in the middle of the frame unit, two ends of the telescopic longitudinal beam unit are respectively movably connected with an end wall inclined strut unit and the mass center adjusting unit, and the first walking unit and the second walking unit are respectively and fixedly arranged on a left side slide rail unit and a right side slide rail unit; mutual rotation or rigid connection between the first walking unit or the second walking unit and the frame unit is realized by adjusting the left side sliding rail unit and the right side sliding rail unit, so that the trolley has the steering or straight track function; through the mutual cooperation of the mass center adjusting unit and the telescopic longitudinal beam unit, the two-degree-of-freedom large-range movement of the mass center position of the trolley is realized, and the universality of the trolley is improved.
2. The dual-purpose center of mass adjustable crash test trolley for curved and straight roads of claim 1, wherein said frame unit comprises: two sets of center seat, two sets of left side slide rail units and two sets of right side slide rail units turn to, wherein, two sets of center seat, two sets of left side slide rail units and two sets of right side slide rail units are symmetry fixed mounting respectively at frame unit both ends, and headwall bracing unit fixed mounting is in the one end of frame unit.
3. The dual-purpose centre of mass adjustable crash test trolley for curved and straight roads of claim 1, wherein said telescoping longitudinal beam unit comprises: left side longeron, right side longeron, extension roof beam and fixed plate, left side longeron and right side longeron pass through the fixed plate and are connected with the extension roof beam, the extension roof beam comprises the multistage to as an organic whole by fixed plate fixed connection, extension roof beam quantity can increase and decrease for adjust retractable longeron unit length.
4. The dual-purpose centre of mass adjustable crash test trolley for curved and straight roads of claim 1, wherein said first running unit and said second running unit are identical in structure and comprise: plain type bogie and steering center axle unit, plain type bogie central symmetry, left side slide rail unit and right side slide rail unit lower extreme are installed respectively on the plain type bogie, steering center axle unit lower extreme is installed at the plain type bogie positive centre, and the three is located same straight line, install respectively on the frame unit left side slide rail unit and right side slide rail unit upper end, steering center axle unit upper end fixed mounting is in the steering center seat in the frame unit.
5. The dual-purpose center of mass adjustable crash test trolley for curved roads according to claim 4, wherein the steering central shaft unit is composed of a steering central shaft and an expansion sleeve which are integrated, wherein the upper part of the steering central shaft is connected with the steering central seat and is the rotation center of the whole walking unit, and the expansion sleeve is sleeved on the intermediate shaft of the simple bogie.
6. The dual-purpose centre of mass adjustable crash test trolley for curved and straight roads of claim 4, wherein said left side track unit and said right side track unit are identical in structure and comprise: go up slide rail, slide rail draw runner and lower slide rail, go up the slide rail and be located below the frame unit, the slide rail draw runner install in last slide rail and with slide rail roll fit down, be equipped with the pressure strip on the frame unit, pressure strip, frame unit, last slide rail and slide rail draw runner pass through lead screw fixed connection and be in the same place, the slide rail passes through the bearing frame down and installs on plain type bogie, go up the slide rail both ends and be equipped with the locking lead screw mount pad respectively, install locking lead screw and No. two locking lead screws on the locking lead screw mount pad respectively, through the distance of adjusting locking lead screw and No. two locking lead screws and bearing frame, realize locking between bearing frame and the frame unit and relax.
7. The dual-purpose centre of mass regulated crash test trolley according to claim 1, wherein said centre of mass regulation unit comprises: the lifting frame unit is fixedly arranged on the frame unit, the front end of the lifting frame unit is connected with the telescopic longitudinal beam unit, and the lifting frame unit is adjusted to be in the left and right positions on the frame unit through the telescopic longitudinal beam unit so as to realize the left and right adjustment of the center of mass of the whole vehicle; the counterweight unit is connected with a hydraulic cylinder in the lifting frame unit through a steel wire, and the stepless adjustment of the counterweight unit in the height direction is realized by adjusting the extension and contraction of a piston rod of the hydraulic cylinder.
8. The dual-purpose centre of mass regulated crash test trolley according to claim 7, wherein said lifting frame unit comprises: many vertical beams, crossbeam and two hoisting longeron units, two hoisting longeron units include: the hydraulic cylinder is fixed at one end, and a piston rod slides leftwards and rightwards in a guide groove of the hydraulic cylinder and is connected with the counterweight unit through two steel wires and the first and second right belt wheels respectively.
9. The dual-purpose mass center adjusting type crash test trolley for the curved and straight roads as claimed in claim 8, wherein one of the two steel wires is connected with the right side of the counterweight unit through a right second belt pulley, the other steel wire is connected with the left side of the counterweight unit through a right first belt pulley and a left belt pulley, the hydraulic cylinder is connected with an external oil source, and the integral synchronous lifting of the counterweight unit is realized by controlling the hydraulic cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921655959.3U CN210690087U (en) | 2019-09-30 | 2019-09-30 | Formula collision test platform truck is adjusted to dual-purpose barycenter of curved straight way |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921655959.3U CN210690087U (en) | 2019-09-30 | 2019-09-30 | Formula collision test platform truck is adjusted to dual-purpose barycenter of curved straight way |
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| Publication Number | Publication Date |
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| CN210690087U true CN210690087U (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921655959.3U Expired - Fee Related CN210690087U (en) | 2019-09-30 | 2019-09-30 | Formula collision test platform truck is adjusted to dual-purpose barycenter of curved straight way |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542570A (en) * | 2019-09-30 | 2019-12-06 | 吉林大学 | Formula collision test platform truck is adjusted to dual-purpose barycenter of curved straight way |
| CN111982539A (en) * | 2020-09-15 | 2020-11-24 | 吉林大学 | Vehicle or rack protective guard detection test bed |
-
2019
- 2019-09-30 CN CN201921655959.3U patent/CN210690087U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542570A (en) * | 2019-09-30 | 2019-12-06 | 吉林大学 | Formula collision test platform truck is adjusted to dual-purpose barycenter of curved straight way |
| CN111982539A (en) * | 2020-09-15 | 2020-11-24 | 吉林大学 | Vehicle or rack protective guard detection test bed |
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Granted publication date: 20200605 Termination date: 20200930 |