CN105129686A - Traction and hydraulic tensioning device used for automobile collision test - Google Patents
Traction and hydraulic tensioning device used for automobile collision test Download PDFInfo
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- CN105129686A CN105129686A CN201510449379.9A CN201510449379A CN105129686A CN 105129686 A CN105129686 A CN 105129686A CN 201510449379 A CN201510449379 A CN 201510449379A CN 105129686 A CN105129686 A CN 105129686A
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Abstract
The invention discloses a traction and hydraulic tensioning device used for an automobile collision test. The traction and hydraulic tensioning device comprises a fixed-elevation guide wheel assembly, a traction rope and wheel assembly and a hydraulic tensioning mechanism. The fixed-elevation guide wheel assembly comprises a high guide slide wheel assembly and a low guide slide wheel assembly. The traction rope and wheel assembly comprises a first traction rope and wheel device close to the fixed-elevation guide wheel assembly, and a second traction rope and wheel device. The first traction rope and wheel device and the second traction wheel and rope device are driven by a drive motor to rotate. The hydraulic tensioning mechanism comprises a hydraulic tensioning slide wheel and slide block assembly which comprises a first slide wheel and a second slide wheel. The first slide wheel and the second slide wheel are arranged on guide rails through slide blocks. By means of the traction and hydraulic tensioning device, a traction rope correspondingly wound on the traction and tensioning device can be protected in an all-direction manner in the automobile collision test, an anti-disengagement pin, pressing rods, tension shafts and a positioning and unloading key are ingenious in structure, and the possibility of damage caused to a test device when a traction rope is placed in a wrong groove is well avoided.
Description
Technical field
The present invention relates to a kind of for vehicle impact testing traction and Hydranlic tensioner, belong to vehicle impact testing field.
Background technology
Vehicle impact testing be comprehensive evaluation vehicle safety performance be substantially the most also most effective method.Test clashes into obstacle by wheel tractor with certain speed, has collided the rear inspection carrying out every data to dummy and automobile, has improved with this to vehicle, to protect the safety of occupant.Because in test, automobile can not lean on self power to drive, again because vehicle impact testing is a kind of unrepeatable destructive test, so the effect of the traction system of wheel tractor motion is very crucial.Existing mode of traction mainly contains the modes such as electric traction, hydraulic haulage, gravity traction, tractor truck traction.Electric traction generally comprises motor, actuating device, hauling rope and tightening device.
Traction in current Collision test and the protection of tightening device to hauling rope are only limitted to the protection under running state; do not consider end of test hauling rope be in relaxed state under protection; or consideration is thorough not; pulley axis direction is being parallel to and is being welded with the mode of two root guard bars as some adopts; its structure is simple, function singleness; being wound in wrong race easily appears in hauling rope in a relaxed state, once system starts easily occur system crash, brings great potential safety hazard to vehicle impact testing.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art; the invention provides a kind of for vehicle impact testing traction and Hydranlic tensioner; by arranging multiple anticreep groove, can protect by the omnibearing hauling rope to traction and the corresponding winding of tightening device in vehicle impact testing.
Technical scheme: for solving the problems of the technologies described above, the present invention designs a kind of for vehicle impact testing traction and Hydranlic tensioner, comprise the high track adjusting wheel assembly of calibration, traction sheave assembly and hydraulic tensioning mechanism, described calibration high track adjusting wheel assembly comprises one high and one low two leading sheave assemblies, is respectively the first leading sheave assembly being positioned at eminence and the second leading sheave assembly being positioned at lower; Described traction sheave assembly comprises the first traction sheave device and the second traction sheave device near calibrating high track adjusting wheel assembly, first traction sheave device and the second traction sheave device are driven by drive motor and rotate, first traction sheave device comprises the first rope sheave, second traction sheave device comprises the second rope sheave, first rope sheave and the second rope sheave are equipped with the grooving that several hauling ropes pass through, more than the grooving of the second rope sheave one of the grooving of the first rope sheave; Described hydraulic tensioning mechanism comprises hydraulic tensioning pulley slide block assembly, and hydraulic tensioning pulley slide block assembly comprises the first pulley and the second pulley, and the first pulley and the second pulley are all arranged on guide rail by slide block; During hauling rope leads and penetrates the most limit of the first rope sheave grooving below the first leading sheave assembly, enter in the grooving of the second rope sheave, be incorporated in the first pulley, hauling rope is wrapped in the grooving of the second rope sheave and the grooving of the first rope sheave successively, when hauling rope is positioned at the grooving on the most limit of another side of the second rope sheave, hauling rope is incorporated in the second pulley, enters into the grooving of the second pulley and the grooving of the first pulley successively, enter into the second leading sheave assembly from the second pulley.
As preferably, described first leading sheave assembly comprises pilled-in selvedge leading sheave, pilled-in selvedge leading sheave is rack-mount by rotating shaft, second guide pulley device comprises slack list leading sheave, slack list leading sheave is rack-mount by rotating shaft, and the below of pilled-in selvedge leading sheave and the top of slack list leading sheave are all provided with the locking pin preventing hauling rope from job-hoping.
As preferably, the top of described first rope sheave and the second rope sheave is equipped with the depression bar that anti-hauling rope takes off groove, and depression bar is provided with the groove corresponding with the grooving of the first rope sheave and the second rope sheave.
As preferably, described first rope sheave and the second rope sheave are arranged on bearing seat by rotating shaft, bearing seat is on installation cast iron platform, cast iron platform is provided with several inverted T shape grooves, keyway is provided with bottom bearing seat, in inverted T shape groove, be provided with location off-load key, off-load key mapping in location is in the groove of bearing seat, and off-load key in location is provided with the keyway corresponding with the grooving of the first rope sheave and the second rope sheave.
As preferably, described slide block is provided with thrust axis, the position that thrust axis is corresponding with the first pulley and the second pulley is provided with the first groove and the second groove that prevent hauling rope from job-hoping.
As preferably, be connected with guide rail splice between described guide rail, guide rail splice is provided with two to anti-hauling rope job-hopping backplate, often pair of anti-hauling rope job-hopping backplate comprises the L-type plate of two symmetrical distributions.
Beneficial effect: of the present invention for vehicle impact testing traction and Hydranlic tensioner; can protect by the omnibearing hauling rope to traction and the corresponding winding of tightening device in vehicle impact testing; wherein locking pin, depression bar, thrust axis and location off-load bond structure are ingenious; location off-load keyset location, load sharing and anticreep groove function, in one, well avoid the wrong groove of hauling rope brings damage possibility to experimental set-up.
Accompanying drawing explanation
Fig. 1 is the overall structure layout of apparatus of the present invention;
Fig. 2 is the high track adjusting wheel axis projection of calibration of apparatus of the present invention;
Fig. 3 is the axis projection of the first rope sheave assembly of apparatus of the present invention;
Fig. 4 is apparatus of the present invention hydraulic tensioning mechanism assembly front view;
Fig. 5 is apparatus of the present invention hydraulic tensioning mechanism assembly block diagram;
Fig. 6 is the hydraulic tensioning mechanism slide block pulley assembly front view of apparatus of the present invention;
Fig. 7 is the hydraulic tensioning mechanism slide block pulley assembly birds-eye view of apparatus of the present invention;
Fig. 8 is hydraulic actuating cylinder connecting flange plate axonometric drawing;
Fig. 9 is the axonometric drawing of another angle of hydraulic actuating cylinder connecting flange plate;
Figure 10 is the first rope sheave assembly of apparatus of the present invention and the axial end multiview drawing of the second rope sheave assembly;
Figure 11 is that the hauling rope of apparatus of the present invention is wound around schematic diagram;
Figure 12 is the pressure rod structure schematic diagram of apparatus of the present invention;
Figure 13 is the axonometric projection graph of off-load key in location of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in figure 1 to figure 13, of the present invention for vehicle impact testing traction and Hydranlic tensioner, comprise the high track adjusting wheel assembly 1 of calibration, traction sheave assembly 2 and hydraulic tensioning mechanism 3, described calibration high track adjusting wheel assembly 1 comprises one high and one low two leading sheave assemblies, is respectively the first leading sheave assembly being positioned at eminence and the second leading sheave assembly being positioned at lower; Described traction sheave assembly comprises the first traction sheave device and the second traction sheave device near calibrating high track adjusting wheel assembly, first traction sheave device and the second traction sheave device are driven by drive motor and rotate, first traction sheave device comprises the first rope sheave 22, second traction sheave device and comprises the second rope sheave 27; Described hydraulic tensioning mechanism comprises hydraulic tensioning pulley slide block assembly, and hydraulic tensioning pulley slide block assembly comprises the first pulley 322 and the second pulley 321, first pulley 322 and the second pulley 321 and is all arranged on guide rail by slide block 323, and guide rail is magnesium iron guide rail.
In the present invention, calibrate high track adjusting wheel assembly 1 and leading sheave support 11 is installed, leading sheave support 11 is equipped with the higher pilled-in selvedge leading sheave 13 of relative position and the low slack list leading sheave 12 of relative position, guide wheel bracket 11 is arranged on pre-buried iron plate 15 by its upper bolt hole position; Locking pin 14 is installed on pilled-in selvedge leading sheave 13 incision inferius place, and is fastened on leading sheave support 11 by tapped bore, is used for preventing hauling rope from job-hoping in a relaxed state; Locking pin 16 is installed on slack list leading sheave 12 incision superius place, and is fastened on guide wheel bracket 11 by tapped bore, is used for preventing hauling rope from job-hoping in a relaxed state; The incision superius of pilled-in selvedge leading sheave incision inferius and slack list leading sheave designs in same absolute altitude thus controls the absolute altitude of hauling rope horizontal surface, realizes cutting being wound around with incision by one high and one low two pulleys and hauling rope.
Traction sheave assembly comprises the first traction sheave device and the second traction sheave device near calibrating high track adjusting wheel assembly, first traction sheave device comprises the first rope sheave 22, second traction sheave device comprises the second rope sheave 27, first rope sheave 22 and the second rope sheave 27 are arranged on bearing seat by rotating shaft, rotating shaft is connected with coupler, and coupler is connected with drive motor.First rope sheave 22 is provided with six groovings, is respectively a, b ... f, the second rope sheave is equipped with the grooving that five hauling ropes pass through, and is respectively A, B ... E, the top of the first rope sheave 22 and the second rope sheave 27 is equipped with the depression bar 21 that anti-hauling rope takes off groove.
Depression bar 21 profile that anti-hauling rope takes off groove adopts round steel turning to form; symmetrical milling placed in the middle six cannelures 211; the depression bar 21 that anti-hauling rope takes off groove by support installing directly over bearing seat 24 with the end of bearing seat 24 split surface; by grooving a, b on groove and the first rope sheave 22 ... f one to one mode carries out position limitation protection to hauling rope.
As shown in Figure 10, the connection bottom described bearing seat and between described installation cast iron platform is realized by described location off-load key, and sections bracing with connective positional realizes between the base channel and the T-slot of cast iron platform of bearing seat.Described connection can realize the concentric locating of matching between bearing seat, and bears horizontal loading by described location off-load key, reduces the fastening bolt load between bearing seat and cast iron platform, plays loading sharing effect.
Location off-load key 23 profile be arranged on below the first rope sheave is oblong, the threaded tapped through hole 231 in two ends, symmetry placed in the middle mills out six keyways 232, be installed on cast iron platform 25 by T-slot on cast iron platform 25, again bearing seat 24 is positioned on cast iron platform 25, groove bottom bearing seat is agreed with location off-load key 23, and fixed form utilizes the bolt hole of bearing seat base channel position to realize thread connection with location off-load key upper screwed hole 231.The design of location off-load key 23 has three effects, and location off-load key 23 bears horizontal load on the one hand, reduces the attachment bolt load between bearing seat 24 and cast iron platform 25, achieves load sharing effect; Ensure that bearing seat installation site is accurate by location off-load key 23 and agreeing with of bearing seat groove on the other hand, serve the effect of installing location; In addition, by six keyways 232 and tion sheave rope grooves a, b on location off-load key 23 ... the mode that f one_to_one corresponding is arranged, off-load key in location has carried out position limitation protection to hauling rope.By two anti-hauling ropes take off the depression bar 21 of groove and location off-load key 23 form 3 spacing, position limitation protection has been carried out to hauling rope, can guarantee that hauling rope can not depart from grooving in transmission process.
Second rope sheave 27 is identical with the first rope sheave 22 arrangement and hauling rope protected mode principle.Difference is that anti-hauling rope takes off depression bar 21 milling five cannelures placed in the middle of groove and off-load key 23 symmetry placed in the middle in location mills out five grooves; by grooving A on groove on it and the second rope sheave 27; B ... the mode that E one_to_one corresponding is arranged, carries out position limitation protection to hauling rope.As shown in Figure 1; off-load key 23 is located by the second sheave shaft bearing 24 split surface right part; anti-hauling rope directly over the second sheave shaft bearing 24 location off-load key 23 taken off bottom the depression bar 21 of groove and bearing seat form 3 spacing; position limitation protection is carried out to hauling rope, can guarantee that hauling rope can not depart from grooving in transmission process.
The present invention adopts two drive motor 28 (DC speed-regulating motor) to be propulsion source, rope sheave is driven to rotate by elastic dowel pin shaft coupling 2.9, two groups of rope sheaves can realize the spiral winding between hauling rope and rope sheave, increase and drive cornerite to improve frictional traction.The concrete canoe of hauling rope is as shown in Figure 7: hauling rope leads the grooving f penetrated to the first rope sheave 22 below high pilled-in selvedge leading sheave 13 axle of calibration, again through the grooving E of the second rope sheave 27 after the first rope sheave 22 half-turn, second rope sheave 27 is incorporated into the first pulley 322 after half-turn, hauling rope unrolls to the grooving E of the second rope sheave 27 afterwards, then hauling rope is wound into grooving e on the first rope sheave 22, again around to grooving E on the second rope sheave, d to the first rope sheave is enclosed afterwards around the second rope sheave one, again around to grooving D place on the second rope sheave, hauling rope is mutual spiral winding between the first rope sheave 22 and the second rope sheave 27, when being wound to grooving A on the second rope sheave 27, hauling rope is wound to the second pulley 321, then unroll grooving A to the second rope sheave 27, again to the first tion sheave rope grooves a, finally lay out above slack list leading sheave 12 axle, finally be wound around at the backhaul wheel station of traction track opposite side and realize closing traction.
Second rope sheave 27 right tractive lines fender guard is location off-load key 23, location off-load key 23 is fixedly mounted on magnesium iron guide rail 34 by two ends tapped bore, magnesium iron guide rail 34 is arranged on hydraulic tensioning mechanism and installs on foot rest 31, assembly pulley 32 is agreed with by slide block 323 and magnesium iron guide rail 34, make slide block can on magnesium iron guide rail slide anteroposterior; Guide rail splice 38 profile is rectangular plate, have two pieces, be installed on above magnesium iron guide rail 34, intermediate symmetry designs a boss 381, boss side surfaces and magnesium iron guide rail respective face are close to, be convenient to realize positioning control to both sides magnesium iron guide rail spacing, it be respectively designed with 4 bolts hole and 4 tapped bore, be respectively used to be connected and install anti-hauling rope job-hopping backplate with magnesium iron guide rail; Guide rail splice 38 is provided with four L-type plates 36 simultaneously, every two L-type plates 36 are a combination, L-type plate 36 horizontal edge is arranged on guide rail splice 38, two L-type plate installations separated by a distance, make to keep certain horizontal throw between L-type plate vertical edge, the hauling rope guaranteeing between the first pulley 321 and the second pulley 322 to the second rope sheave 27 is still in the gap that two blocks of L-type plates are separated out in a relaxed state, avoids hauling rope and play deflection occurs in a relaxed state.
In assembly pulley 32, be connected two side slides by sheave shaft 327 with thrust axis, slide block 323 is designed to T-shaped slide block, and slide block 323 two ends are designed with tapped bore, for fixedly mounting slide block dustproof sheet; Two, left and right sides magnesium iron guide rail 34 is designed to T-shaped guide rail, forms moving sets by slide block 323 boss side surfaces to the corresponding shape face of magnesium iron guide rail 34; Milling the first groove 326 and the second groove in left and right on thrust axis 324, by the race one_to_one corresponding of first groove 326 and the second groove and pulley 321 and pulley 322, has carried out position limitation protection to hauling rope; In the middle of thrust axis 324, the nut 325 (freely can rotate around thrust axis) be connected with hydraulic cylinder piston rod 3.9 end is housed, hauling rope diameter is 14mm, and between thrust axis and pulley, line space design is 4mm, and hauling rope can be prevented toward both sides play; Hydraulic actuating cylinder connecting flange plate 35 symmetric design positioning boss, flanged plate medium design has and hydraulic actuating cylinder Flange joint knock hole 354, ensure that the centering of coupling nut 325 on hydraulic cylinder piston rod 3.9 and thrust axis 324; Hydraulic actuating cylinder connecting flange plate 35 boss periphery design has six tapped bore 352, for connecting of hydraulic tensioning cylinder 37 and flanged plate 35, hydraulic actuating cylinder connecting flange plate 35 two ends are designed with four through holes 351 for flanged plate is connected installation with magnesium iron guide rail 34, flanged plate 35 protrudes two ends gulde edge 353 to be close to left and right sides magnesium iron guide rail 34 and to install, and ensure that the accurate of left and right sides guide rail 34 installing space by two gulde edges.By the long-range pressure regulation of hydraulic control system, order about hydraulic cylinder piston rod 3.9 and be with running block 32 to slide on magnesium iron guide rail 34, realize the function of hydraulic efficiency pressure system tensioning hauling rope.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. one kind is drawn and Hydranlic tensioner for vehicle impact testing, it is characterized in that: comprise the high track adjusting wheel assembly of calibration, traction sheave assembly and hydraulic tensioning mechanism, described calibration high track adjusting wheel assembly comprises one high and one low two leading sheave assemblies, is respectively the first leading sheave assembly being positioned at eminence and the second leading sheave assembly being positioned at lower; Described traction sheave assembly comprises the first traction sheave device and the second traction sheave device near calibrating high track adjusting wheel assembly, first traction sheave device and the second traction sheave device are driven by drive motor and rotate, first traction sheave device comprises the first rope sheave, second traction sheave device comprises the second rope sheave, first rope sheave and the second rope sheave are equipped with the grooving that several hauling ropes pass through, more than the grooving of the second rope sheave one of the grooving of the first rope sheave; Described hydraulic tensioning mechanism comprises hydraulic tensioning pulley slide block assembly, and hydraulic tensioning pulley slide block assembly comprises the first pulley and the second pulley, and the first pulley and the second pulley are all arranged on guide rail by slide block; During hauling rope leads and penetrates the most limit of the first rope sheave grooving below the first leading sheave assembly, enter in the grooving of the second rope sheave, be incorporated in the first pulley, hauling rope is wrapped in the grooving of the second rope sheave and the grooving of the first rope sheave successively, when hauling rope is positioned at the grooving on the most limit of another side of the second rope sheave, hauling rope is incorporated in the second pulley, enters into the grooving of the second rope sheave and the grooving of the first rope sheave successively, finally enter into the second leading sheave assembly from the second pulley.
2. according to claim 1 for vehicle impact testing traction and Hydranlic tensioner, it is characterized in that: described first leading sheave assembly comprises pilled-in selvedge leading sheave, pilled-in selvedge leading sheave is rack-mount by rotating shaft, second leading sheave assembly comprises slack list leading sheave, slack list leading sheave is rack-mount by rotating shaft, and the below of pilled-in selvedge leading sheave and the top of slack list leading sheave are all provided with the locking pin preventing hauling rope from job-hoping.
3. according to claim 1 for vehicle impact testing traction and Hydranlic tensioner, it is characterized in that: the top of described first rope sheave and the second rope sheave is equipped with the depression bar that anti-hauling rope takes off groove, depression bar is provided with the groove corresponding with the grooving of the first rope sheave and the second rope sheave.
4. according to claim 3 for vehicle impact testing traction and Hydranlic tensioner, it is characterized in that: described first rope sheave and the second rope sheave are arranged on bearing seat by rotating shaft, bearing seat is on installation cast iron platform, cast iron platform is provided with several inverted T shape grooves, keyway is provided with bottom bearing seat, in inverted T shape groove, be provided with location off-load key, off-load key mapping in location is in the groove of bearing seat, and off-load key in location is provided with the keyway corresponding with the grooving of the first rope sheave and the second rope sheave.
5. according to claim 1 for vehicle impact testing traction and Hydranlic tensioner, it is characterized in that: described slide block is provided with thrust axis, the position that thrust axis is corresponding with the first pulley and the second pulley is provided with the first groove and the second groove that prevent hauling rope from job-hoping.
6. according to claim 1 for vehicle impact testing traction and Hydranlic tensioner, it is characterized in that: between described guide rail, be connected with guide rail splice, guide rail splice is provided with two to anti-hauling rope job-hopping backplate, often pair of anti-hauling rope job-hopping backplate comprises the L-type plate of two symmetrical distributions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510449379.9A CN105129686B (en) | 2015-07-28 | 2015-07-28 | One kind is for vehicle impact testing traction and Hydranlic tensioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510449379.9A CN105129686B (en) | 2015-07-28 | 2015-07-28 | One kind is for vehicle impact testing traction and Hydranlic tensioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105129686A true CN105129686A (en) | 2015-12-09 |
| CN105129686B CN105129686B (en) | 2017-06-20 |
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ID=54715351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510449379.9A Expired - Fee Related CN105129686B (en) | 2015-07-28 | 2015-07-28 | One kind is for vehicle impact testing traction and Hydranlic tensioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105129686B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606330A (en) * | 2016-02-25 | 2016-05-25 | 江苏科技大学 | Traction track for automobile crash test |
| CN110658002A (en) * | 2019-11-20 | 2020-01-07 | 天津瑷睿赛福科技有限公司 | Dummy lumbar vertebra measuring tool for automobile crash test |
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| JP2003075288A (en) * | 2001-09-06 | 2003-03-12 | Shinko Electric Co Ltd | Collision test equipment of vehicle |
| CN2565676Y (en) * | 2002-09-04 | 2003-08-13 | 锦州锦恒汽车安全系统股份有限公司 | Rotary traction system for car collision test |
| JP2008139090A (en) * | 2006-11-30 | 2008-06-19 | Shinko Electric Co Ltd | Vehicle crash experimental apparatus |
| CN101387589A (en) * | 2007-09-12 | 2009-03-18 | 威海市试验机制造有限公司 | Push-and-pull feed mechanism of drop hammer type impact tester |
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2015
- 2015-07-28 CN CN201510449379.9A patent/CN105129686B/en not_active Expired - Fee Related
Patent Citations (4)
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| JP2003075288A (en) * | 2001-09-06 | 2003-03-12 | Shinko Electric Co Ltd | Collision test equipment of vehicle |
| CN2565676Y (en) * | 2002-09-04 | 2003-08-13 | 锦州锦恒汽车安全系统股份有限公司 | Rotary traction system for car collision test |
| JP2008139090A (en) * | 2006-11-30 | 2008-06-19 | Shinko Electric Co Ltd | Vehicle crash experimental apparatus |
| CN101387589A (en) * | 2007-09-12 | 2009-03-18 | 威海市试验机制造有限公司 | Push-and-pull feed mechanism of drop hammer type impact tester |
Non-Patent Citations (1)
| Title |
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| 梁雷: "汽车碰撞试验电机牵引系统的改进与研究", 《中国优秀硕士学位论文全文数据库（电子期刊）》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606330A (en) * | 2016-02-25 | 2016-05-25 | 江苏科技大学 | Traction track for automobile crash test |
| CN105606330B (en) * | 2016-02-25 | 2018-05-22 | 江苏科技大学 | One kind is used for vehicle impact testing traction track |
| CN110658002A (en) * | 2019-11-20 | 2020-01-07 | 天津瑷睿赛福科技有限公司 | Dummy lumbar vertebra measuring tool for automobile crash test |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105129686B (en) | 2017-06-20 |
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Effective date of registration: 20171115 Address after: 535500 Guangxi Fangchenggang Shangsi County seven door sent Luo Tun Xiang Patentee after: Guangxi state farms Chang Ling farm Address before: 212003 Zhenjiang City, Jiangsu province dream Creek Road, No. 2 Patentee before: Jiangsu University of Science and Technology |
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Granted publication date: 20170620 Termination date: 20190728 |