CN206132381U - Shock absorber rubber bush fatigue test stand - Google Patents
Shock absorber rubber bush fatigue test stand Download PDFInfo
- Publication number
- CN206132381U CN206132381U CN201621199882.XU CN201621199882U CN206132381U CN 206132381 U CN206132381 U CN 206132381U CN 201621199882 U CN201621199882 U CN 201621199882U CN 206132381 U CN206132381 U CN 206132381U
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- China
- Prior art keywords
- spring
- bearing
- crank
- connecting rod
- bracket
- Prior art date
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- Expired - Fee Related
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- 238000009661 fatigue test Methods 0.000 title claims abstract description 15
- 239000006096 absorbing agent Substances 0.000 title abstract description 3
- 230000035939 shock Effects 0.000 title abstract description 3
- 241001247986 Calotropis procera Species 0.000 title abstract 2
- 230000001360 synchronised Effects 0.000 claims abstract description 8
- 230000001808 coupling Effects 0.000 claims abstract description 7
- 238000010168 coupling process Methods 0.000 claims abstract description 7
- 238000005859 coupling reaction Methods 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims description 12
- 238000006073 displacement reaction Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000003638 reducing agent Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 230000001737 promoting Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
Abstract
The utility model discloses a shock absorber rubber bush fatigue test stand, main content is: precompression adjusting bolt adjusting screw is installed to U -shaped mould right -hand member, force transducer is connected with two spring mechanism left ends, the slider is installed on linear guide, two spring mechanism install on the slider, two spring mechanism right -hand members pass through right coupling and are connected with the U -shaped pole, first bearing passes through the bolt and installs in the mounting hole of U -shaped pole, crank connecting rod sliding block mechanism left end is installed on first bearing, crank connecting rod sliding block mechanism lower extreme passes through the bearing and installs on the bearing frame, from the driven pulleys installs on the crank of crank connecting rod sliding block mechanism, the end cover is installed on the crank of crank connecting rod sliding block mechanism, inverter motor installs on the reduction gear, the reduction gear is installed on the right branch frame, right side support mounting is on the frame, driving pulley installs on the output shaft of reduction gear, a locking nut installed is epaxial at gearbox output, synchronous tooth belt is installed on driving pulley and from the driven pulleys.
Description
Technical field
This utility model is related to fatigue test board technical field, specifically, more particularly to a kind of vibroshock rubber bushing
Fatigue test board.
Background technology
Vibroshock rubber bushing is widely used in vapour because having the advantages that vibration and noise reducing, light weight and can absorb dither
In suspension vibroshock, automotive seat vibroshock and motor turning vibroshock.Vibroshock rubber bushing passes through bearing pin by vibration damping
Together with device one end is flexibly connected with vehicle frame, in modern majority independent suspension for vehicle, assembling integral vibroshock and spring more
Form shock absorber strut assembly.Due to reasons such as light weights, even if vehicle is in non-driving state, lower vibroshock rubber bushing begins
The elastic force effect of spring is born eventually, and bears certain radial direction precompression；Under vehicle running state, lower vibroshock rubber lining
Set bears again the load of complicated alternation, therefore easily causes it that fatigue rupture occurs.By the technique study vibroshock tested
The fatigue life of rubber bushing is a kind of effective method, therefore develops a kind of examination for vibroshock rubber bushing fatigue test
It is very necessary to test platform.
Utility model content
Technical problem to be solved in the utility model is, for above-mentioned deficiency of the prior art, to disclose one kind and subtract
Shake device rubber bushing fatigue test board, its smooth running, stable performance, adjustable with the distance between crank by adjusting eccentric shaft
Whole amplitude of exciting force, by adjusting the adjustable precompression of adjustment swivel nut, the fatigue of different size vibroshock rubber bushing can be met
Test requirements document.
This utility model solves the technical scheme that its technical problem adopted：A kind of vibroshock rubber bushing fatigue test
Platform, including support, left socle, rubber bushing, mounting seat, U-shaped mold, precompression adjustment swivel nut, left coupling, force transducer,
Dual spring mechanism, slide block, the electric cabinet of control, line slideway, latch, right screw mandrel, U-shaped bar, clutch shaft bearing, crank connecting rod sliding block machine
Structure, bearing block, driven pulley, end cap, right support, driving pulley, decelerator, frequency conversion motor, displacement transducer, synchronous cog belt
With the first locking nut；The left socle is arranged on support, and the U-shaped mold left end is arranged on mounting seat by rubber bushing
On, the mounting seat is arranged on left socle, and the U-shaped mold right-hand member is provided with precompression adjustment swivel nut, and the precompression is adjusted
Whole swivel nut right-hand member is connected by left coupling with force transducer, and the force transducer is connected with dual spring mechanism left end, the control
The electric cabinet of system is fixedly mounted on support, and the line slideway is arranged on the top of the electric cabinet of control, and the slide block is led installed in straight line
On rail, the dual spring mechanism is arranged on slide block, and dual spring mechanism right-hand member is connected by right screw mandrel with U-shaped bar, institute
State clutch shaft bearing to be arranged in the installing hole of U-shaped bar by latch, the crank connecting rod sliding block mechanism left end is arranged on first axle
Hold, the crank connecting rod sliding block mechanism lower end is arranged on bearing block by bearing, the bearing block is arranged on the electric cabinet of control
Right flank on, the driven pulley be arranged on crank connecting rod sliding block mechanism crank on, the end cap is arranged on by screw
On the crank of crank connecting rod sliding block mechanism and the top surface of end cap is withstood on the bottom surface of driven pulley, the frequency conversion motor is arranged on and subtracts
On fast device, the decelerator is fixedly mounted on right support, and the right support is arranged on support, and the driving pulley is arranged on
On the output shaft of decelerator, first locking nut is arranged on reducer output shaft and the first locking nut top surface withstands on master
On the bottom surface of movable belt pulley, the synchronous cog belt is arranged on driving pulley and driven pulley, and institute's displacement sensors are arranged on
On the trailing flank of the electric cabinet of control.
As a kind of preferred implementation of the present utility model, also including left limit block, cabinet door, handle and right limit block,
The left limit block and right limit block are all arranged on the electric cabinet top face of control, and the control electricity cabinet is provided with cabinet door, the cabinet door
On handle is installed.
Used as a kind of preferred implementation of the present utility model, the dual spring mechanism is by left installation lid, output shaft, movement
Determine latch bracket, right installation lid, input shaft, right-hand screw spring, left move in move spring bracket, the right side of framework, left-hand screw spring, spring base, the right side
Latch bracket composition is determined on latch bracket and a left side, and the left lid of installing is fixedly mounted on the left side of mobility framework, and spring is determined on the left side
Support is fixedly mounted on the left right flank for installing lid, and the output shaft is arranged in the installing hole that latch bracket is determined on a left side, the left spiral shell
Rotation spring left end is arranged on a left side to be determined on latch bracket, and left-hand screw spring right-hand member is moved on spring bracket installed in a left side, and the left side is moved spring bracket
It is fixedly mounted on the left surface of spring base, spring bracket is moved on the right flank of spring base in the right side, the right-hand screw bullet
Spring left end is moved on spring bracket installed in the right side, and right-hand screw spring right-hand member is arranged on the right side to be determined on latch bracket, and the right side is determined latch bracket and fixed
On the right left surface for installing lid, the right lid of installing is fixedly mounted on the right flank of mobility framework, the input shaft
In the installing hole for determining latch bracket installed in the right side.
As a kind of preferred implementation of the present utility model, the crank connecting rod sliding block mechanism by connecting rod, second bearing,
Nut, crank, disk, leading screw mounting seat, leading screw, circlip for hole, the second locking nut and eccentric shaft composition, the crank
In the installing hole of disk, the leading screw mounting seat is arranged on the top surface of disk, and the leading screw is arranged on by bearing
In leading screw mounting seat, the nut is arranged on leading screw, and the eccentric shaft is arranged on nut top surface, and the second bearing is installed
On eccentric shaft, second locking nut is arranged on eccentric shaft and the second locking nut bottom surface withstands on the top surface of second bearing
On, the connecting rod is arranged in second bearing, and the circlip for hole is arranged in the annular groove of connecting rod installing hole and hole
Withstood on the top surface of second bearing outer ring with circlip bottom surface.
Testing stand Jing after reductor deceleration, drives the crank connecting link being made up of crank, connecting rod and eccentric shaft by frequency conversion motor
Slide block mechanism obtains harmonic excitation, and input shaft is by being made up of right-hand screw spring, spring base, left-hand screw spring and mobility framework
Dual spring mechanism is loaded into harmonic excitation flexibility on rubber bushing test specimen, force transducer and displacement transducer monitoring exciting force and
Exciting displacement.By the rotating speed for adjusting frequency conversion motor, the adjustment of rubber bushing excited frequency is realized；By adjusting eccentric shaft with song
The distance between handle, realizes the adjustment of rubber bushing amplitude of exciting force；Constant force to rubber bushing is realized by dual spring mechanism
Amplitude is loaded；Swivel nut is adjusted by rotating the precompression that left and right two ends are oppositely oriented screwed hole, is changed U-shaped mold relative to force and is passed
The axial displacement of sensor, realizes adjustment of the testing stand to test specimen precompression, so as to meet the fatigue examination of different size rubber bushing
Test requirement.
Dual spring mechanism is by identical left-hand screw spring, right-hand screw spring, spring base, mobility framework and latch bracket etc. zero
Part is constituted.Left-hand screw spring, right-hand screw spring are separately mounted to determine latch bracket and move between spring bracket, and left and right helical spring connects
It is logical corresponding dynamic, determine latch bracket and be symmetrically mounted in mobility framework.Input shaft is pushed away by promoting left-hand screw spring, right-hand screw spring
Dynamic mobility framework, so as to realize the flexibility loading to test specimen.
This utility model has compared with prior art advantages below：
A kind of vibroshock rubber bushing fatigue test board disclosed in this utility model, it adopts crank connecting link dual spring mechanism
The harmonic excitation to rubber bushing can be realized, when test specimen causes deflection to change because of fatigue failure, amplitude of exciting force is missed
Difference very little；Testing stand can be adjusted to the precompression of rubber bushing, amplitude of exciting force and excited frequency according to test requirements document, energy
Meet the fatigue test requirement of different size rubber bushing, smooth running, stable performance.
Description of the drawings
Fig. 1 is a kind of structural front view of specific embodiment of the present utility model；
Fig. 2 is a kind of structure left view of specific embodiment of the present utility model；
Fig. 3 is a kind of structural representation of specific embodiment crank connecting rod sliding block mechanism of the present utility model；
Fig. 4 is a kind of structural representation of specific embodiment dual spring mechanism of the present utility model.
Description of reference numerals：
1：Support, 2：Left socle, 3：Rubber bushing, 4：Mounting seat, 5：U-shaped mold, 6：Precompression adjustment swivel nut, 7：The Left-wing Federation
Axle device, 8：Force transducer, 9：Dual spring mechanism, 10：Left limit block, 11：Slide block, 12：The electric cabinet of control, 13：Line slideway, 14：
Cabinet door, 15：Handle, 16：Right limit block, 17：Latch, 18：Right screw mandrel, 19：U-shaped bar, 20：Clutch shaft bearing, 21：Crank connecting link
Slide block mechanism, 22：Bearing block, 23：Driven pulley, 24：End cap, 25：Right support, 26：Driving pulley, 27：Decelerator, 28：Become
Frequency motor, 29：Displacement transducer, 30：Synchronous cog belt, 31：First locking nut；
901：Left installation is covered, and 902：Output shaft, 903：Mobility framework, 904：Left-hand screw spring, 905：Spring base, 906：It is right
Move spring bracket, 907：Latch bracket is determined on the right side, and 908：Right installation is covered, and 909：Input shaft, 910：Right-hand screw spring, 911：A left side is moved spring
Support, 912：Determine latch bracket in a left side；
2101：Connecting rod, 2102：Second bearing, 2103：Nut, 2104：Crank, 2105：Disk, 2106：Leading screw is installed
Seat, 2107：Leading screw, 2108：Circlip for hole, 2109：Second locking nut, 2110：Eccentric shaft.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment describes this utility model specific embodiment：
It should be noted that structure, ratio, size for illustrating in this specification institute accompanying drawing etc., only to coordinate explanation
Content disclosed in book, so that those skilled in the art understands and reads, is not limited to this utility model enforceable
Qualificationss, the modification of any structure, the change of proportionate relationship or the adjustment of size, can be generated this utility model is not affected
Effect and the purpose to be reached under, all should still fall obtain the scope that can cover in the technology contents disclosed in this utility model
It is interior.
Meanwhile, in this specification it is cited such as " on ", D score, "left", "right", the term of " centre " and " ", also
Only understanding for ease of narration, and be not used to limit the enforceable scope of this utility model, its relativeness is altered or modified,
Under without essence change technology contents, when being also considered as the enforceable category of this utility model.
As shown in Figure 1 to 4, it illustrates specific embodiment of the present utility model；As illustrated, this utility model is public
A kind of vibroshock rubber bushing fatigue test board opened, including support 1, left socle 2, rubber bushing 3, mounting seat 4, U-shaped mold
5th, precompression adjustment swivel nut 6, left coupling 7, force transducer 8, dual spring mechanism 9, slide block 11, the electric cabinet 12, line slideway of control
13rd, latch 17, right screw mandrel 18, U-shaped bar 19, clutch shaft bearing 20, crank connecting rod sliding block mechanism 21, bearing block 22, driven pulley
23rd, end cap 24, right support 25, driving pulley 26, decelerator 27, frequency conversion motor 28, displacement transducer 29, the and of synchronous cog belt 30
First locking nut 31；The left socle 2 is arranged on support 1, and the left end of U-shaped mold 5 is arranged on peace by rubber bushing 3
On dress seat 4, the mounting seat 4 is arranged on left socle 2, and the right-hand member of U-shaped mold 5 is provided with precompression adjustment swivel nut 6, described
The precompression adjustment right-hand member of swivel nut 6 is connected by left coupling 7 with force transducer 8, and the force transducer 8 is left with dual spring mechanism 9
End connection, the control electricity cabinet 12 is fixedly mounted on support 1, and the line slideway 13 is arranged on the top of the electric cabinet 12 of control,
The slide block 11 is arranged on line slideway 13, and the dual spring mechanism 9 is arranged on slide block 11, and the dual spring mechanism 9 is right
End is connected by right screw mandrel 18 with U-shaped bar 19, and the clutch shaft bearing 20 is arranged on the installing hole of U-shaped bar 19 by latch 17
In, the left end of the crank connecting rod sliding block mechanism 21 is arranged on clutch shaft bearing 20, and the lower end of the crank connecting rod sliding block mechanism 21 leads to
Bearing is crossed on bearing block 22, the bearing block 22 is arranged on the right flank of the electric cabinet 12 of control, the driven pulley 23
On the crank of crank connecting rod sliding block mechanism 21, the end cap 24 is arranged on crank connecting rod sliding block mechanism 21 by screw
On crank and the top surface of end cap 24 is withstood on the bottom surface of driven pulley 23, the frequency conversion motor 28 is arranged on decelerator 27, institute
State decelerator 27 to be fixedly mounted on right support 25, the right support 25 is arranged on support 1, and the driving pulley 26 is arranged on
On the output shaft of decelerator 27, first locking nut 31 is arranged on the output shaft of decelerator 27 and the first locking nut 31 is pushed up
Face is withstood on the bottom surface of driving pulley 26, and the synchronous cog belt 30 is arranged on driving pulley 26 and driven pulley 23, described
Displacement transducer 29 is arranged on the trailing flank of the electric cabinet 12 of control.
Preferably, also including left limit block 10, cabinet door 14, handle 15 and right limit block 16, the left limit block 10 and the right side
Limited block 16 is all arranged on the electric top surface of cabinet 12 of control, and the control electricity cabinet 12 is provided with cabinet door 14, installs in the cabinet door 14
There is handle 15.
Preferably, the dual spring mechanism 9 is by left installation lid 901, output shaft 902, mobility framework 903, left-hand screw spring
904th, the spring base 905, right side move spring bracket 906, the right side determine latch bracket 907, it is right install lid 908, input shaft 909, right-hand screw spring
910th, spring bracket 911 is moved on a left side and a left side determine latch bracket 912 and is constituted, and the left installation lid 901 is fixedly mounted on a left side for mobility framework 903
On end face, the left side is determined latch bracket 912 and is fixedly mounted on the right flank of left installation lid 901, and the output shaft 902 is arranged on a left side
In determining the installing hole of latch bracket 912, the left end of left-hand screw spring 904 is arranged on a left side to be determined on latch bracket 912, left-hand screw spring
904 right-hand members are moved on spring bracket 911 installed in a left side, and left side spring bracket 911 of moving is fixedly mounted on the left surface of spring base 905,
Spring bracket 906 is moved on the right flank of spring base 905 in the right side, and the left end of right-hand screw spring 910 is moved installed in the right side
On spring bracket 906, the right-hand member of right-hand screw spring 910 is arranged on the right side to be determined on latch bracket 907, and the right side is determined latch bracket 907 and is fixedly mounted on
On the right left surface for installing lid 908, the right installation lid 908 is fixedly mounted on the right flank of mobility framework 903, the input
Axle 909 is arranged in the installing hole that latch bracket 907 is determined on the right side.
This utility model preferred implementation is explained in detail above in conjunction with accompanying drawing, but this utility model is not limited to
Above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, can be with without departing from this utility model
Make a variety of changes on the premise of objective.
Many other changes and remodeling can be made without departing from spirit and scope of the present utility model.It should be appreciated that this reality
Specific embodiment is not limited to new, scope of the present utility model is defined by the following claims.
Claims (4)
1. a kind of vibroshock rubber bushing fatigue test board, it is characterised in that：Including support, left socle, rubber bushing, installation
Seat, U-shaped mold, precompression adjustment swivel nut, left coupling, force transducer, dual spring mechanism, slide block, the electric cabinet of control, straight line are led
Rail, latch, right screw mandrel, U-shaped bar, clutch shaft bearing, crank connecting rod sliding block mechanism, bearing block, driven pulley, end cap, right support,
Driving pulley, decelerator, frequency conversion motor, displacement transducer, synchronous cog belt and the first locking nut；The left socle is arranged on
On support, the U-shaped mold left end is arranged in mounting seat by rubber bushing, and the mounting seat is arranged on left socle, institute
State U-shaped mold right-hand member and precompression adjustment swivel nut is installed, the precompression adjustment swivel nut right-hand member is sensed by left coupling with power
Device connects, and the force transducer be connected with dual spring mechanism left end, and the electricity cabinet that controls is fixedly mounted on support, the straight line
Guide rails assembling is arranged on line slideway in the top of the electric cabinet of control, the slide block, and the dual spring mechanism is arranged on slide block,
Dual spring mechanism right-hand member is connected by right screw mandrel with U-shaped bar, and the clutch shaft bearing is arranged on the peace of U-shaped bar by latch
In dress hole, the crank connecting rod sliding block mechanism left end is arranged on clutch shaft bearing, and the crank connecting rod sliding block mechanism lower end passes through
Bearing is arranged on bearing block, and the bearing block is arranged on the right flank of the electric cabinet of control, and the driven pulley is arranged on crank
On the crank of linkage rod slide block mechanism, the end cap by screw be arranged on crank connecting rod sliding block mechanism crank on and end cap top
Face is withstood on the bottom surface of driven pulley, and the frequency conversion motor is arranged on decelerator, and the decelerator is fixedly mounted on right support
On, the right support is arranged on support, and the driving pulley is arranged on the output shaft of decelerator, first locking nut
On reducer output shaft and the first locking nut top surface is withstood on the bottom surface of driving pulley, the synchronous cog belt is installed
On driving pulley and driven pulley, institute's displacement sensors are arranged on the trailing flank of the electric cabinet of control.
2. a kind of vibroshock rubber bushing fatigue test board as claimed in claim 1, it is characterised in that：Also include left limit
Block, cabinet door, handle and right limit block, the left limit block and right limit block are all arranged on the electric cabinet top face of control, the control
Electric cabinet is provided with cabinet door, and in the cabinet door handle is provided with.
3. a kind of vibroshock rubber bushing fatigue test board as claimed in claim 1, it is characterised in that：The dual spring mechanism
By left installation lid, output shaft, mobility framework, left-hand screw spring, spring base, the right side move spring bracket, it is right determine latch bracket, right installation lid,
Input shaft, right-hand screw spring, a left side move spring bracket and latch bracket composition determine on a left side, it is described it is left install to cover be fixedly mounted on mobility framework
On left side, the left side is determined latch bracket and is fixedly mounted on the left right flank for installing lid, and the output shaft is arranged on a left side and determines spring
In the installing hole of support, the left-hand screw spring left end is arranged on a left side to be determined on latch bracket, and left-hand screw spring right-hand member is moved installed in a left side
On spring bracket, left side spring bracket of moving is fixedly mounted on the left surface of spring base, and spring bracket is moved installed in spring base in the right side
On right flank, the right-hand screw spring left end is moved on spring bracket installed in the right side, and right-hand screw spring right-hand member is arranged on the right side and determines latch bracket
On, the right side is determined latch bracket and is fixedly mounted on the right left surface for installing lid, and the right installation lid is fixedly mounted on mobility framework
Right flank on, the input shaft is arranged on the right side to be determined in the installing hole of latch bracket.
4. a kind of vibroshock rubber bushing fatigue test board as claimed in claim 1, it is characterised in that：The crank connecting link is slided
Block mechanism is by connecting rod, second bearing, nut, crank, disk, leading screw mounting seat, leading screw, circlip for hole, the second locking screw
Female and eccentric shaft composition, the crank is arranged in the installing hole of disk, and the leading screw mounting seat is arranged on the top surface of disk,
The leading screw is arranged in leading screw mounting seat by bearing, and the nut is arranged on leading screw, and the eccentric shaft is arranged on nut
On top surface, the second bearing is arranged on eccentric shaft, and second locking nut is arranged on eccentric shaft and the second locking screw
Female bottom surface is withstood on the top surface of second bearing, and the connecting rod is arranged in second bearing, and the circlip for hole is arranged on and connects
In the annular groove of bar installing hole and circlip for hole bottom surface is withstood on the top surface of second bearing outer ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621199882.XU CN206132381U (en) | 2016-11-07 | 2016-11-07 | Shock absorber rubber bush fatigue test stand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621199882.XU CN206132381U (en) | 2016-11-07 | 2016-11-07 | Shock absorber rubber bush fatigue test stand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206132381U true CN206132381U (en) | 2017-04-26 |
Family
ID=58578404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621199882.XU Expired - Fee Related CN206132381U (en) | 2016-11-07 | 2016-11-07 | Shock absorber rubber bush fatigue test stand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206132381U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109269781A (en) * | 2018-08-22 | 2019-01-25 | 黎庆佳 | A kind of stability test device of the household Fingerprint Lock with remote operation function |
| CN109941456A (en) * | 2019-03-27 | 2019-06-28 | 重庆大学 | A kind of space shuttle cable fatigue simulation experimental prototype |
-
2016
- 2016-11-07 CN CN201621199882.XU patent/CN206132381U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109269781A (en) * | 2018-08-22 | 2019-01-25 | 黎庆佳 | A kind of stability test device of the household Fingerprint Lock with remote operation function |
| CN109941456A (en) * | 2019-03-27 | 2019-06-28 | 重庆大学 | A kind of space shuttle cable fatigue simulation experimental prototype |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170426 Termination date: 20171107 |
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| CF01 | Termination of patent right due to non-payment of annual fee |