CN205049326U - Detection apparatus for can detect hydraulic absorber working property comprehensively - Google Patents
Detection apparatus for can detect hydraulic absorber working property comprehensively Download PDFInfo
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- CN205049326U CN205049326U CN201520624829.9U CN201520624829U CN205049326U CN 205049326 U CN205049326 U CN 205049326U CN 201520624829 U CN201520624829 U CN 201520624829U CN 205049326 U CN205049326 U CN 205049326U
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Abstract
The utility model relates to a detection device field especially relates to a detection apparatus for can detect hydraulic absorber working property comprehensively, including base, mounting bracket, flexible striking structure and hydraulic absorber mounting structure, hydraulic absorber mounting structure, flexible stable the installing on the crossbeam of drive arrangement are fixed in in the hydraulic absorber that awaits measuring installation to stabilizing accurate striking hydraulic absorber mounting structure and going up the hydraulic absorber that awaits measuring of installation, the feasible hydraulic absorber that awaits measuring does compression and extension motion, the more excellent is that detection device still is equipped with the impact inductor at flexible drive arrangement's drive end, is equipped with the speed detecting system who is used for measuring the stroke speed, mold temperature control system, make detection device is accurate to detect whole testing process, the size of ambient temperature, impact and speed when the hydraulic absorber's that awaits measuring the striking that receives time scalar sum clashes into at every turn, and then realize the detection to the work function of hydraulic absorber under variable force, variable speed and the alternating temperature environment.
Description
Technical field
The utility model relates to pick-up unit field, particularly relates to a kind of pick-up unit of energy complete detection bydraulic buffers serviceability.
Background technology
Bydraulic buffers deposits the cylinder body (12) of damping fluid by sealing and lower slide is located in this cylinder body (12) as shown in Figure 1, and the expansion link that upper end can realize stretching forms, telescopic end (11) and the cylinder body of expansion link are mounted on two parts that can be movable relatively respectively in actual applications, by the buffer action of expansion link between cylinder interior extruding damping fluid and elastic component realize two moving components.
Bydraulic buffers is mainly used in mechanical drive, hydrostatic transmission, pneumatic drive mechanisms; mechanism body is damaged for avoiding the impulsive force that between mechanism's parts, quick relative movement produces; and bydraulic buffers has been installed between mechanism's parts of two relative motions; it can absorb kinetic energy; thus available protecting mechanism body, extend the serviceable life of mechanism.Bydraulic buffers is mainly applicable to all kinds of automatic production line at present, as PET bottle blowing machine industry, and car body welding producing line industry, tire manufacturing equipment production industry, logistics equipment manufactures industry, papermaking equipment production industry, plastic welding machine manufacturing, tobacco equipment manufacturing, Robotics industry, steel plant, isolating switch, material processed, packaging, lathe, timber, amusement, body-building equipment, numerous industry such as Medical Devices.The quality of bydraulic buffers directly affects the reliability etc. of the usability of whole equipment, serviceable life, whole equipment, once bydraulic buffers goes wrong, serious words may cause device damage, its economic loss cannot be retrieved, so it is just aobvious particularly important to carry out Performance Detection accurately to bydraulic buffers.And be difficult to realize the long-term monitoring to bydraulic buffers product quality by experiences such as artificial feel, range estimations in prior art, so just need a kind of bydraulic buffers testing equipment to complete such work.
Utility model content
The purpose of this utility model is to propose a kind of pick-up unit that can detect the serviceability of bydraulic buffers under variable force shock, speed change shock and alternating temperature use.
For reaching this object, the utility model by the following technical solutions:
A pick-up unit for energy complete detection bydraulic buffers serviceability, comprises base, erecting frame, flexible impact structure and bydraulic buffers mounting structure;
Further illustrate, described base upper surface is provided with workplace; Described erecting frame comprises column and crossbeam, and what described crossbeam was parallel to described workplace is located at above described base, and described column has two at least, being located at above described base perpendicular to described workplace, and is connected and fixed with the two ends of described crossbeam respectively; Described flexible impact structure comprises retractable driving device; Described retractable driving device is fixed on described crossbeam, and makes the drive end of described retractable driving device be parallel to described column, and does stretching motion immediately below described crossbeam; Described bydraulic buffers mounting structure is located at described workplace, for vertical for bydraulic buffers to be measured described workplace clamping is fixed on described base, and does stretching motion under the telescopic action of the drive end of described retractable driving device;
More excellent, the drive end of described retractable driving device is provided with impact inductor, impact size when described impact inductor clashes into for the drive end and bydraulic buffers to be measured detecting described retractable driving device at every turn;
More excellent, described column is provided with speed detection system, described speed detection system, velocity magnitude when drive end and bydraulic buffers to be measured for detecting described retractable driving device clash at every turn;
More excellent, mold temp. controlling system is provided with in described base, it, for heating described bydraulic buffers mounting structure or cool, controls the liquid working temperature of bydraulic buffers inside to be measured, realizes bydraulic buffers to be measured serviceability at different temperatures.
More excellent, described bydraulic buffers mounting structure comprises mounting seat and block part; Described mounting seat is fixed on described workplace, and for the cylinder body of fixing bydraulic buffers to be tested, described block part covers the telescopic end being fixed on described bydraulic buffers; Make bydraulic buffers to be measured perpendicular to immediately below the drive end being located at described retractable driving device of described workplace.
Further illustrate, described block part is cylindric, and its upper surface is plane, and its lower surface is provided with the recessed cavity volume to described block part inside, and the telescopic end end of bydraulic buffers to be measured is fastened in described cavity volume.
Further illustrated, stated the workplace that mounting seat fixes described base, formed the installation portion of a recess, corrected the described installation portion of insertion under making the cylinder body of bydraulic buffers to be measured and fix.
Illustrate further, the end face of the drive end of described retractable driving device is plane, and what this plane was seamless is mounted with described impact inductor, and the bottom surface of described impact inductor is striking face, and this striking face is parallel with the upper surface of described block part.
Further illustrate, described speed detection system comprises laser sensor and reflector, and described block part is located at by described reflector, and its reflective surface is parallel and be right against described workplace; Described laser sensor is located at below described block part, and the laser vertical of its projection is irradiated to described reflective surface, and is reflected along original route by described reflective surface.
More excellent, described mold temp. controlling system comprises circulating fluid pipe and temperature control box; Described mounting seat is located at by described circulating fluid pipe, for described bydraulic buffers mounting structure the bydraulic buffers to be measured fixed heat or cool; Described temperature control box is communicated with described circulating fluid pipe, for heating the liquid of described circulating fluid pipe internal flow or freeze.
More excellent, described circulating fluid pipe is located in the sidewall of the installation portion of the recess that described mounting seat is provided with in the shape of a spiral, and around the outside being arranged at the cylinder body of bydraulic buffers to be measured.
More excellent, described pick-up unit is also provided with information acquisition device, and described information acquisition device comprises temperature-detecting device and collects display device, the surface contact of the cylinder body of described temperature-detecting device and bydraulic buffers to be measured; When bydraulic buffers to be measured clashes into by described temperature-detecting device at every turn, the temperature on the surface of the cylinder body of described bydraulic buffers to be measured detects, and passes to described collection display device, and the information of collection carries out gathering display by described collection display device.
More excellent, described retractable driving device is telescopic cylinder, and described telescopic cylinder is provided with cylinder movement controller, and described cylinder movement controller is for controlling the collapsing length of described cylinder, stretching speed and cylinder output pressure.
The utility model is according to the pick-up unit of a kind of energy of above-mentioned interior proposition complete detection bydraulic buffers serviceability.Bydraulic buffers to be measured is mounted on described bydraulic buffers mounting structure, and then fix with described base, what described retractable driving device was stable is arranged on described crossbeam, and the bydraulic buffers to be measured that the described bydraulic buffers mounting structure of stable precisely shock is installed, bydraulic buffers to be measured is done and compresses and stretching motion; More optimizedly, described pick-up unit is also provided with impact inductor at the drive end of described retractable driving device, make gravity sensor all the time between the telescopic end and the telescopic end of bydraulic buffers to be measured of described retractable driving device, and then more precisely detect in whole testing process, the impact size be subject to when the shock number of times be subject to of bydraulic buffers to be measured and each shock, achieves the detection of bydraulic buffers being clashed into the serviceability under environment for use at variable force; Described pick-up unit is also provided with the speed detection system for measuring stroke speed, and then can precisely detect in whole testing process, when the shock number of times be subject to of bydraulic buffers to be measured and each shock, stroke speed size, achieves the detection of bydraulic buffers being clashed into the serviceability under environment for use in speed change; Described pick-up unit is also provided with described mold temp. controlling system, the temperature of described mounting structure is made to become adjustable, can according to detecting the temperature needing to set near bydraulic buffers to be measured, simulate the situation that in real work, bydraulic buffers to be measured uses in different operating environment, and then achieve the work functions detection of bydraulic buffers at different operating temperature.
Accompanying drawing explanation
Fig. 1 is the perspective view of an embodiment of bydraulic buffers to be measured;
Fig. 2 is the perspective view of an embodiment of the present utility model;
Fig. 3 is the enlarged diagram that in Fig. 2, circle A irises out part;
Fig. 4 is the enlarged diagram that in Fig. 2, circle B irises out part;
Fig. 5 is the decomposing schematic representation of part-structure in Fig. 2.
Wherein: bydraulic buffers 10 to be measured, cylinder body 11, telescopic end 12, base 100, workplace 110, erecting frame 200, column 210, crossbeam 220, retractable driving device 300, clashes into inductor 310, bydraulic buffers mounting structure 400, mounting seat 410, installation portion 411, block part 420, laser sensor 510, reflector 520, reflective surface 521, circulating fluid pipe 610, temperature control box 620.
Embodiment
The technical solution of the utility model is further illustrated by embodiment below in conjunction with accompanying drawing.
As shown in Figure 2-5, a kind of pick-up unit of energy complete detection bydraulic buffers serviceability, comprises base, erecting frame 200, flexible impact structure and bydraulic buffers mounting structure 400; Described base 100 upper surface is provided with workplace 110; Described erecting frame 200 comprises column 210 and crossbeam 220, what described crossbeam 220 was parallel to described workplace 110 is located at above described base 100, described column 210 has two, being located at above described base 100 perpendicular to described workplace 110, and be connected and fixed with the two ends of described crossbeam 220 respectively; Described flexible impact structure comprises retractable driving device 300; Described retractable driving device 300 is fixed on described crossbeam 220, and makes the drive end of described retractable driving device 300 be parallel to described column 210, and does stretching motion immediately below described crossbeam 220; Described bydraulic buffers mounting structure 400 is located at described workplace 110, for vertical for bydraulic buffers 10 to be measured described workplace 110 clamping is fixed on described base, and does stretching motion under the telescopic action of the drive end of described retractable driving device 300; The drive end of described retractable driving device 300 is provided with impact inductor 310, impact size when described impact inductor 310 clashes into for the drive end and bydraulic buffers to be measured 10 detecting described retractable driving device 300 at every turn; Described column 210 is provided with speed detection system, described speed detection system, velocity magnitude when drive end and bydraulic buffers to be measured 10 for detecting described retractable driving device 300 clash at every turn; Mold temp. controlling system is provided with in described base, it is for heating described bydraulic buffers mounting structure 400 or cool, control the liquid working temperature of bydraulic buffers 10 inside to be measured, realize bydraulic buffers 10 to be measured serviceability at different temperatures.
Described bydraulic buffers mounting structure 400 comprises mounting seat 410 and block part 420; Described mounting seat 410 is fixed on described workplace 110, and for the cylinder body 11 of fixing bydraulic buffers to be tested, described block part 420 covers the telescopic end 12 being fixed on described bydraulic buffers; Make bydraulic buffers 10 to be measured perpendicular to immediately below the drive end being located at described retractable driving device 300 of described workplace 110.Described mounting seat 410 and described block part 420 are two parts separately, the cylinder body 11 of bydraulic buffers 10 to be measured and telescopic end 12 are fixed respectively, make the installation of bydraulic buffers 10 to be measured more simple and convenient.The telescopic end 12 of the bydraulic buffers to be measured 10 after being fixed and cylinder body 11 still can relative motions, when the described block part 420 of the flexible shock of drive end of described retractable driving device 300, described block part 420 drives the telescopic end 12 of bydraulic buffers 10 to be measured to move to cylinder body 11 together, achieves the contraction of bydraulic buffers 10 to be measured; When described block part 420 is left in the drive end contraction of described retractable driving device 300, extend under the effect of telescopic end 12 damping fluid and elastic component in cylinder body 11 of bydraulic buffers 10 to be measured and recover, thus drive described block part 420 to move to the position before being knocked, so repeatedly, the process of the reciprocal telescopic work of bydraulic buffers 10 to be measured has just been simulated.
Described block part 420 is cylindric, and its upper surface is plane, and its lower surface is provided with the recessed cavity volume to described block part 420 inside, and telescopic end 12 end of bydraulic buffers 10 to be measured is fastened in described cavity volume.The telescopic end 12 of bydraulic buffers 10 to be measured is fixed by described cavity volume, and fixed form is a lot, can be interference fit or adopts and arrange the mode such as latch and screw at cavity volume sidewall, and what make described block part 420 and bydraulic buffers 10 to be measured becomes as a whole.The drive end of described retractable driving device 300 is made to have larger striking face when clashing into bydraulic buffers 10 to be measured; skew is clashed into when avoiding shock; the telescopic end 12 of described block part 420 to bydraulic buffers 10 to be measured also plays the effect of protection simultaneously, avoids the telescopic end 12 of bydraulic buffers 10 to be measured to be directly knocked and causes damage.
Described mounting seat 410 fixes the workplace 110 of described base 100, forms the installation portion 411 of a recess, makes the cylinder body of bydraulic buffers 10 to be measured correct the described installation portion 411 of insertion for 11 times and fixes.The acting force that the cylinder body 11 of bydraulic buffers 10 to be measured is subject in the process of inspection side is that vertical described workplace 110 is downward all the time, therefore when installing bydraulic buffers 10 to be measured, its cylinder body 11 part is only needed to be inserted in described mounting seat 410, its degree of freedom on the direction of parallel described workplace 110 is made to be zero, therefore described mounting seat 410 and the installation fixed form of described workplace 110, make the installation process of the assembling of described pick-up unit and bydraulic buffers to be measured 10 more simple and convenient.
The end face of the drive end of described retractable driving device 300 is plane, and what this plane was seamless is mounted with described impact inductor 310, and the bottom surface of described impact inductor 310 is striking face, and this striking face is parallel with the upper surface of described block part 420.Make described impact inductor 310 become as a whole with the drive end of described retractable driving device 300, allow it the size of the impact of bydraulic buffers 10 to be measured can be detected more accurately.
Described speed detection system comprises laser sensor 510 and reflector 520, and described block part 420 is located at by described reflector 520, and its reflective surface 521 is parallel and be right against described workplace 110; Described laser sensor 510 is located at below described block part 420, and the laser vertical of its projection is irradiated to described reflective surface 521, and is reflected along original route by described reflective surface 521.Described speed detection system is located in telescopic described block part 420 and described mounting seat 410, by detecting the speed of related movement of described block part 420 and described mounting seat 410, record the size that bydraulic buffers 10 to be measured is subject to stroke speed, because laser sensor 510 has very high accuracy of detection, therefore make described pick-up unit can detect the stroke speed size that each bydraulic buffers to be measured 10 is clashed into more accurately.
Described mold temp. controlling system comprises circulating fluid pipe 610 and temperature control box 620; Described mounting seat 410 is located at by described circulating fluid pipe 610, for described bydraulic buffers mounting structure 400 the bydraulic buffers to be measured 10 fixed heat or cool; Described temperature control box 620 is communicated with described circulating fluid pipe 610, for heating the liquid of described circulating fluid pipe 610 internal flow or freeze.Operator is by regulating the temperature setup parameter on described temperature control box 620, described temperature control box 620 heats according to the parameter of setting the liquid in described circulating fluid pipe 610 or cools, thus indirectly change the temperature of described mounting seat 410, the temperature of self is passed to the cylinder body 11 of bydraulic buffers 10 to be measured by described mounting seat 410 again, thus simulates bydraulic buffers 10 to be measured serviceability when ambient temperature is different.
Described circulating fluid pipe 610 is located in the sidewall of the installation portion 411 of the recess that described mounting seat 410 is provided with in the shape of a spiral, and around the outside being arranged at the cylinder body 11 of bydraulic buffers 10 to be measured.The sidewall of spiral helicine described circulating fluid pipe 610 to described installation portion 411 heats or cools, make described pick-up unit in use, described circulating fluid pipe 610 starts flowing, the temperature of described installation portion 411 can arrive setting value soon, greatly reduce described pick-up unit formally detect before setup time.
Described pick-up unit is also provided with information acquisition device, and described information acquisition device comprises temperature-detecting device and collects display device, the surface contact of the cylinder body 11 of described temperature-detecting device and bydraulic buffers to be measured 10; When bydraulic buffers 10 to be measured clashes into by described temperature-detecting device at every turn, the temperature on the surface of the cylinder body 11 of described bydraulic buffers to be measured 10 detects, and passing to described collection display device, the information of collection carries out gathering display by described collection display device.The whole testing process being arranged so that described pick-up unit of described information acquisition device, the detection of the temperature of the cylinder body 11 of bydraulic buffers 10 to be measured, check and correction and display all realize intellectuality, also make the testing process of described detecting device more intelligent, testing result is more accurate.
Described retractable driving device 300 is telescopic cylinder, and described telescopic cylinder is provided with cylinder movement controller, and described cylinder movement controller is for controlling the collapsing length of described cylinder, stretching speed and cylinder output pressure.The drive end of described retractor device and the impact size not between its object clashed into, the distance flexible to this drive end, speed are relevant with cylinder output pressure, described cylinder movement controller is that a lot of existing cylinder is all provided with, adopt the telescopic cylinder with described cylinder movement controller, the testing environment of described pick-up unit when detecting bydraulic buffers 10 to be measured can be made, become adjustable controlled, the aimed detection of the practical more Multi-example of energy, makes testing result can react the performance of detected sample more accurately.
Below know-why of the present utility model is described in conjunction with specific embodiments.These describe just in order to explain principle of the present utility model, and can not be interpreted as the restriction to the utility model protection domain by any way.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other embodiment of the present utility model, and these modes all will fall within protection domain of the present utility model.
Claims (10)
1. a pick-up unit for energy complete detection bydraulic buffers serviceability, is characterized in that, comprises base, erecting frame, flexible impact structure and bydraulic buffers mounting structure;
Described base upper surface is provided with workplace; Described erecting frame comprises column and crossbeam, and what described crossbeam was parallel to described workplace is located at above described base, and described column has two at least, being located at above described base perpendicular to described workplace, and is connected and fixed with the two ends of described crossbeam respectively;
Described flexible impact structure comprises retractable driving device; Described retractable driving device is fixed on described crossbeam, and makes the drive end of described retractable driving device be parallel to described column, and does stretching motion immediately below described crossbeam; Described bydraulic buffers mounting structure is located at described workplace, for vertical for bydraulic buffers to be measured described workplace clamping is fixed on described base, and does stretching motion under the telescopic action of the drive end of described retractable driving device;
The drive end of described retractable driving device is provided with impact inductor, impact size when described impact inductor clashes into for the drive end and bydraulic buffers to be measured detecting described retractable driving device at every turn;
Described column is provided with speed detection system, described speed detection system, velocity magnitude when drive end and bydraulic buffers to be measured for detecting described retractable driving device clash at every turn;
Be provided with mold temp. controlling system in described base, it, for heating described bydraulic buffers mounting structure or cool, controls the liquid working temperature of bydraulic buffers inside to be measured, realizes bydraulic buffers to be measured serviceability at different temperatures.
2. the pick-up unit of a kind of energy complete detection bydraulic buffers serviceability according to claim 1, it is characterized in that, described bydraulic buffers mounting structure comprises mounting seat and block part; Described mounting seat is fixed on described workplace, and for the cylinder body of fixing bydraulic buffers to be tested, described block part covers the telescopic end being fixed on described bydraulic buffers; Make bydraulic buffers to be measured perpendicular to immediately below the drive end being located at described retractable driving device of described workplace.
3. the pick-up unit of a kind of energy complete detection bydraulic buffers serviceability according to claim 2, it is characterized in that, described block part is cylindric, its upper surface is plane, its lower surface is provided with the recessed cavity volume to described block part inside, and the telescopic end end of bydraulic buffers to be measured is fastened in described cavity volume.
4. the pick-up unit of a kind of energy complete detection bydraulic buffers serviceability according to claim 2, it is characterized in that, described mounting seat fixes the workplace of described base, form the installation portion of a recess, correct the described installation portion of insertion under making the cylinder body of bydraulic buffers to be measured and fix.
5. the pick-up unit of a kind of energy complete detection bydraulic buffers serviceability according to claim 3, it is characterized in that, the end face of the drive end of described retractable driving device is plane, what this plane was seamless is mounted with described impact inductor, the bottom surface of described impact inductor is striking face, and this striking face is parallel with the upper surface of described block part.
6. the pick-up unit of a kind of energy complete detection bydraulic buffers serviceability according to claim 2, it is characterized in that, described speed detection system comprises laser sensor and reflector, and described block part is located at by described reflector, and its reflective surface is parallel and be right against described workplace; Described laser sensor is located at below described block part, and the laser vertical of its projection is irradiated to described reflective surface, and is reflected along original route by described reflective surface.
7. the pick-up unit of a kind of energy complete detection bydraulic buffers serviceability according to claim 2, it is characterized in that, described mold temp. controlling system comprises circulating fluid pipe and temperature control box; Described mounting seat is located at by described circulating fluid pipe, for described bydraulic buffers mounting structure the bydraulic buffers to be measured fixed heat or cool; Described temperature control box is communicated with described circulating fluid pipe, for heating the liquid of described circulating fluid pipe internal flow or freeze.
8. the pick-up unit of a kind of energy complete detection bydraulic buffers serviceability according to claim 7, it is characterized in that, described circulating fluid pipe is located in the sidewall of the installation portion of the recess that described mounting seat is provided with in the shape of a spiral, and around the outside being arranged at the cylinder body of bydraulic buffers to be measured.
9. the pick-up unit of a kind of energy complete detection bydraulic buffers serviceability according to claim 1, it is characterized in that, described pick-up unit is also provided with information acquisition device, described information acquisition device comprises temperature-detecting device and collects display device, the surface contact of the cylinder body of described temperature-detecting device and bydraulic buffers to be measured; When bydraulic buffers to be measured clashes into by described temperature-detecting device at every turn, the temperature on the surface of the cylinder body of described bydraulic buffers to be measured detects, and passes to described collection display device, and the information of collection carries out gathering display by described collection display device.
10. the pick-up unit of a kind of energy complete detection bydraulic buffers serviceability according to claim 1, it is characterized in that, described retractable driving device is telescopic cylinder, and described telescopic cylinder is provided with cylinder movement controller, described cylinder movement controller is for controlling the collapsing length of described cylinder, stretching speed and cylinder output pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520624829.9U CN205049326U (en) | 2015-08-18 | 2015-08-18 | Detection apparatus for can detect hydraulic absorber working property comprehensively |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520624829.9U CN205049326U (en) | 2015-08-18 | 2015-08-18 | Detection apparatus for can detect hydraulic absorber working property comprehensively |
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| Publication Number | Publication Date |
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| CN205049326U true CN205049326U (en) | 2016-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520624829.9U Expired - Fee Related CN205049326U (en) | 2015-08-18 | 2015-08-18 | Detection apparatus for can detect hydraulic absorber working property comprehensively |
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| CN (1) | CN205049326U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067249A (en) * | 2015-08-18 | 2015-11-18 | 佛山市百进一精密机械有限公司 | Device capable of completely detecting working performance of hydraulic buffer |
| CN108489741A (en) * | 2018-03-26 | 2018-09-04 | 扬州大学 | A kind of failure of hydraulic vibration damper used for vehicle hole and Oil shocking detection device |
-
2015
- 2015-08-18 CN CN201520624829.9U patent/CN205049326U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067249A (en) * | 2015-08-18 | 2015-11-18 | 佛山市百进一精密机械有限公司 | Device capable of completely detecting working performance of hydraulic buffer |
| CN108489741A (en) * | 2018-03-26 | 2018-09-04 | 扬州大学 | A kind of failure of hydraulic vibration damper used for vehicle hole and Oil shocking detection device |
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Granted publication date: 20160224 Termination date: 20210818 |
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| CF01 | Termination of patent right due to non-payment of annual fee |