CN109482092A - A kind of driving mechanism for shaker - Google Patents
A kind of driving mechanism for shaker Download PDFInfo
- Publication number
- CN109482092A CN109482092A CN201811604747.2A CN201811604747A CN109482092A CN 109482092 A CN109482092 A CN 109482092A CN 201811604747 A CN201811604747 A CN 201811604747A CN 109482092 A CN109482092 A CN 109482092A
- Authority
- CN
- China
- Prior art keywords
- shaft
- platform
- driving
- driving platform
- driving mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/60—Mixers with shaking, oscillating, or vibrating mechanisms with a vibrating receptacle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/70—Drives therefor, e.g. crank mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
- B01F35/32—Driving arrangements
- B01F35/325—Driving reciprocating or oscillating stirrers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/23—Mixing of laboratory samples e.g. in preparation of analysing or testing properties of materials
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Transmission Devices (AREA)
Abstract
A kind of driving mechanism for shaker, it include: shell, swirling device, vertical reciprocator, switching device, swirling device includes rotation drive device, rotation drive device driving eccentric shaft makes rocking platform eddying motion, vertical reciprocator includes the output precision moved back and forth vertically with Power Component, the driving oscillation platform of rotation drive device transmission connection, and output precision is realized by changeover module and is sequentially connected with Power Component.Rotation drive device is connect by eccentric shaft with rocking platform so that rocking platform generates eddying motion, or after being connect by connected unit with rocking platform, by transmission ring transmission shaft and drive rod are sequentially connected so that rocking platform does vertical reciprocating motion, output eddying motion is realized by single rotation drive device or vertical move back and forth.The present invention is used for shaker.
Description
Technical field
The present invention relates to test apparatus field, especially a kind of driving mechanism for shaker.
Background technique
Shaker is for mixing the essential equipment of solution in laboratory, and shaker to vibrate by driving device
The rocking platform that instrument is equipped with moves back and forth to mix solution.There is the common three kinds of motor patterns of rocking platform when mixing solution
Eddying motion, vertical reciprocating motion, plane and straight line movement.Existing shaker, majority are only capable of completing one of above movement,
Function is limited, and even if can be realized two kinds of movements, usually requires that multiple driving devices are arranged, there is a problem of it is at high cost,
Need to provide a kind of new driving device thus, can be realized eddying motion, it is vertical move back and forth, in plane and straight line movement extremely
It is two kinds few, to reduce cost.
Summary of the invention
The purpose that the present invention wants is: a kind of driving mechanism for shaker is provided, it can be real by single driving device
Existing eddying motion or vertical reciprocating motion.
The solution that the present invention solves its technical problem is:
A kind of driving mechanism for shaker, comprising: shell, shell are equipped with vertical pole, and the top of vertical pole is equipped with boss,
The first slide opening being vertically arranged is equipped in boss, the lower wall of shell is equipped with the support shaft stretched out upwards, the lower wall of shell
On be additionally provided with clamping platform protruding upward, the upper side of clamping platform is equipped with the blocked hole being arranged along the vertical direction, sets on blocked hole
There are at least two arcuation grooves；Swirling device, swirling device include being located at the intracorporal rotation drive device of shell, rotation drive device
Including along the output shaft set up, the top rotation stop of output shaft is connected with eccentric shaft；Vertical reciprocator, it is vertical reciprocal
Telecontrol equipment includes Power Component and output precision, and Power Component includes the transmission shaft with support shaft rotation connection, transmission shaft with
Output shaft is sequentially connected, and transmission ring is arranged on the upside of transmission shaft, and transmission ring engages connection with transmission shaft and can be along transmission shaft
The periphery of lower slider, transmission ring is equipped with annular groove；Output precision includes drive shaft, drive shaft be set to the top of transmission shaft and with branch
Axis rotation connection is supportted, the periphery of drive shaft is equipped with the driving cog that can be engaged with transmission ring, and the top of drive shaft is connected with lower driving
Platform, lower driving platform are equipped with the first contact block protruding upward；The top of lower driving platform is equipped with upper driving platform, the bottom surface of upper driving platform
Equipped with the second contact block being located on same circumference with the first contact block, drive rod is connected on the upside of upper driving platform, drive rod is along
One slide opening is slided and is connect with the first slide opening rotation stop；Elastic component, elastic component is located between driving platform and boss, so that upper driving
Platform is abutted with the holding of lower driving platform；Switching member, switching member are shift fork, and shift fork includes the shifting block to link together and clamping
Section, shifting block abuts with the upper side wall of annular groove, clamping section is arranged along the vertical direction, and clamping section with arcuation groove equipped with being clamped
Convex block.
As a further improvement of the above technical scheme, output shaft is connect with transmission shaft V belt translation.
As a further improvement of the above technical scheme, the lower part of support shaft is equipped with the shaft shoulder, the bottom end of transmission shaft and the shaft shoulder
Between pass through thrust bearing connect.
As a further improvement of the above technical scheme, it is additionally provided with thrust bearing between the top and drive shaft of support shaft,
The top of thrust bearing is abutted with drive shaft, bottom end is abutted with support shaft.
As a further improvement of the above technical scheme, elastic component is spring, and one end of spring abuts with upper driving platform, is another
One end is abutted with boss.
As a further improvement of the above technical scheme, the structure of upper driving platform and lower driving platform is symmetrical above and below.
As a further improvement of the above technical scheme, the quantity of the first contact block is multiple, and multiple first contact blocks are circumferentially
Direction is uniformly arranged.
As a further improvement of the above technical scheme, the first contact block and upper driving platform joint are equipped with guide section.
The beneficial effects of the present invention are: eccentric shaft is used to export vertical reciprocating motion for exporting eddying motion, drive rod,
When rocking platform is only affixed with eccentric shaft, rotation drive device is connect by eccentric shaft with rocking platform so that rocking platform produces
Raw eddying motion；When rocking platform is only affixed with drive rod, rotation drive device makes transmission shaft drive drive by transmission ring
Lever rotation, so that the left vertical reciprocating motion of rocking platform, vibration can be driven by being realized by single rotation drive device
It swings the rocking platform on instrument and generates eddying motion or vertical reciprocating motion.
The present invention relates to test apparatus field, especially a kind of driving mechanism for shaker.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described.Obviously, described attached drawing is a part of the embodiments of the present invention, rather than is all implemented
Example, those skilled in the art without creative efforts, can also be obtained according to these attached drawings other designs
Scheme and attached drawing.
Fig. 1 is the schematic view of the front view of embodiment；
Fig. 2 is the perspective view of lower driving platform.
Specific embodiment
It is carried out below with reference to technical effect of the embodiment and attached drawing to design of the invention, specific structure and generation clear
Chu is fully described by, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is this hair
Bright a part of the embodiment, rather than whole embodiments, based on the embodiment of the present invention, those skilled in the art are not being paid
Other embodiments obtained, belong to the scope of protection of the invention under the premise of creative work.In addition, be previously mentioned in text
All connections or connection relationship not singly refer to that component directly connects, and referring to can be added deduct according to specific implementation situation by adding
Connect auxiliary less, Lai Zucheng more preferably connection structure.Each technical characteristic in the present invention, in the premise of not conflicting conflict
Under can be with combination of interactions.
Embodiment is as follows, referring to figs. 1 to Fig. 2, a kind of driving mechanism for shaker, comprising: shell 100, shell 100
It is equipped with vertical pole, the top of vertical pole is equipped with boss 120, the first slide opening being vertically arranged is equipped in boss 120, under shell 100
Side wall is equipped with the support shaft 130 stretched out upwards, is additionally provided with clamping platform 140 protruding upward in the lower wall of shell 100, is clamped
The upper side of platform 140 is equipped with the blocked hole being arranged along the vertical direction, and blocked hole is equipped at least two arcuation grooves 141；It is vortexed
Device, swirling device include the rotation drive device being located in shell 100, and rotation drive device includes along the output set up
The top rotation stop of axis, output shaft is connected with eccentric shaft 220；Vertical reciprocator, vertical reciprocator include power
Component and output precision, Power Component include the transmission shaft 320 being rotatablely connected with support shaft 130, and transmission shaft 320 and output shaft pass
Dynamic connection, the upside of transmission shaft 320 are arranged with transmission ring 330, and transmission ring 330 engages connection with transmission shaft 320 and can be along transmission
Axis 320 slides up and down, and the periphery of transmission ring 330 is equipped with annular groove 331；Output precision includes drive shaft 340, and drive shaft 340 is set
In transmission shaft 320 top and be rotatablely connected with support shaft 130, the periphery of drive shaft 340 is equipped with and can engage with transmission ring 330
Driving cog 341, the top of drive shaft 340 are connected with lower driving platform 350, and lower driving platform 350 is equipped with the first touching protruding upward
Block 351；The top of lower driving platform 350 is equipped with upper driving platform 360, and the bottom surface of upper driving platform 360 is equipped with to be located at the first contact block 351
The upside of the second contact block on same circumference, upper driving platform 360 is connected with drive rod 370, and drive rod 370 is slided along the first slide opening
And it is connect with the first slide opening rotation stop；Elastic component 400, elastic component 400 is located between driving platform 360 and boss 120, so that upper drive
Dynamic platform 360 is abutted with the holding of lower driving platform 350；Switching member, switching member are shift fork, and shift fork includes the shifting block to link together
510 abut with clamping section 520, shifting block 510 with the upper side wall of annular groove 331, and clamping section 520 is arranged along the vertical direction, are clamped section
520 are equipped with the convex block being clamped with arcuation groove.
Eccentric shaft for exporting eddying motion, drive rod for exporting vertical reciprocating motion, when rocking platform only with bias
When axis is affixed, rotation drive device is connect by eccentric shaft with rocking platform so that rocking platform generates eddying motion；Work as oscillation
When platform is only affixed with drive rod, rotation drive device makes transmission shaft that drive rod be driven to rotate by transmission ring, so that
Rocking platform is left vertical to be moved back and forth, by single rotation drive device realize can the rocking platform on driving oscillation instrument produce
Raw eddying motion or vertical reciprocating motion.
Transmission ring 330 is engaged with transmission shaft 320 to be connected and can slide up and down along transmission shaft 320, in particular transmission ring
Inside is equipped with internal tooth, and the periphery of transmission shaft is equipped with external tooth, and external tooth is meshed with internal tooth, and internal tooth can be sliding along the side wall of external tooth
Transmission ring can be slided up and down along transmission shaft while the dynamic engagement connection with realization.The periphery of drive shaft 340 is equipped with can be with transmission ring
The driving cog 341 of 330 engagements, the in particular periphery of drive shaft 340 are equipped with the external tooth engageable with the internal tooth on transmission ring, make
Realization transmission connection can be engaged by obtaining the two.
It is as follows to implement principle；When needing to export eddying motion, eccentric shaft is fixedly connected with rocking platform, specifically may be used
To be to be fixedly connected by screw, and shift fork is allocated to upper position, so that transmission ring and drive shaft are in non-drive connection shape
State is to reduce rotation drive device workload；Start rotation drive device, output shaft drives eccentric shaft rotation, so that vibration
It wipes out platform and generates eddying motion.
When needing to export vertical reciprocating motion, the screw of eccentric shaft and rocking platform is removed, and with making drive shaft and oscillation
Platform is affixed, specifically can be and is connected by screw to, after will on shift fork dial, drive transmission ring move up, transmission shaft and drive shaft
It is sequentially connected by transmission ring, drive shaft drives the lower driving platform rotation of top, the first contact block, upper driving platform on lower driving platform
On the second contact block root be equipped with guide section offset so that the first contact block smoothly transits to when rotating with the second contact block
It connects, when the first contact block is abutted with the second contact block, rocking platform moves up under the action of drive rod；First contact block leaves the second contact block
When, drive rod drives rocking platform to move down under the action of the elastic member, and so on, realizes vertical move back and forth.Rotation driving
Device can be motor, air motor etc..Preferably servo motor.
It is further used as preferred embodiment, output shaft is connect with 320 V belt translation of transmission shaft.
It is further used as preferred embodiment, the lower part of support shaft 130 is equipped with the shaft shoulder, the bottom end of transmission shaft 320 and axis
It is connected between shoulder by thrust bearing.Thrust bearing, thrust bearing are additionally provided between the top and drive shaft 340 of support shaft 130
Top abutted with drive shaft 340, bottom end is abutted with support shaft 130.The setting of thrust bearing so that when the two relative rotation hinder
Power is smaller, and noise is smaller.
It is further used as preferred embodiment, elastic component 400 is spring, one end of spring abuts with upper driving platform 360,
The other end is abutted with boss 120.
It is further used as preferred embodiment, the structure of upper driving platform 360 and lower driving platform 350 is symmetrical above and below.Upper drive
Dynamic platform and lower driving platform structure are symmetrical above and below, make it possible to reduce die sinking part, by the way that two driving platforms are distinguished turned upside down
Ground is fixed on drive rod and drive shaft, reduces production cost.
Be further used as preferred embodiment, the quantity of the first contact block 351 be it is multiple, multiple first contact blocks 351 are along circle
Circumferential direction is uniformly arranged.The setting of multiple contact blocks has better support effect, is hardly damaged so that the two contact surface is bigger.
It is further used as preferred embodiment, the first contact block 351 is equipped with guide section with upper 360 joint of driving platform.
Better embodiment of the invention is illustrated above, but the present invention is not limited to the embodiment,
Those skilled in the art can also make a variety of equivalent modifications or replacement on the premise of without prejudice to spirit of the invention, this
Equivalent variation or replacement are all included in the scope defined by the claims of the present application a bit.
Claims (8)
1. a kind of driving mechanism for shaker, it is characterised in that: include:
Shell (100), shell (100) are equipped with vertical pole, and the top of vertical pole is equipped with boss (120), and it is vertical to be equipped in boss (120)
The first slide opening being arranged, the lower wall of shell (100) are equipped with the support shaft (130) stretched out upwards, the lower wall of shell (100)
On be additionally provided with clamping platform protruding upward (140), the upper side of clamping platform (140) is equipped with the blocked hole being arranged along the vertical direction,
Blocked hole is equipped at least two arcuation grooves (141)；
Swirling device, swirling device include the rotation drive device being located in shell (100), and rotation drive device includes along upward
The output shaft of setting, the top rotation stop of output shaft are connected with eccentric shaft (220)；
Vertical reciprocator, vertical reciprocator include Power Component and output precision, and Power Component includes and branch
The transmission shaft (320) of axis (130) rotation connection is supportted, transmission shaft (320) and output shaft are sequentially connected, the upside of transmission shaft (320)
It being arranged with transmission ring (330), transmission ring (330) is engaged with transmission shaft (320) to be connected and can slide up and down along transmission shaft (320),
The periphery of transmission ring (330) is equipped with annular groove (331)；
Output precision includes drive shaft (340), and drive shaft (340) is set to the top of transmission shaft (320) and turns with support shaft (130)
Dynamic connection, the periphery of drive shaft (340) are equipped with the driving cog (341) that can be engaged with transmission ring (330), the top of drive shaft (340)
End is connected with lower driving platform (350), and lower driving platform (350) is equipped with the first contact block (351) protruding upward；Lower driving platform
(350) top is equipped with upper driving platform (360), and the bottom surface of upper driving platform (360), which is equipped with, is located at same circle with the first contact block (351)
The second contact block on week is connected with drive rod (370) on the upside of upper driving platform (360), and drive rod (370) is slided along the first slide opening
And it is connect with the first slide opening rotation stop；
Elastic component (400), elastic component (400) is located between driving platform (360) and boss (120), so that upper driving platform (360)
It keeps abutting with lower driving platform (350)；
Switching member, switching member are shift fork, and shift fork includes the shifting block (510) to link together and clamping section (520), shifting block
(510) abutted with the upper side wall of annular groove (331), clamping section (520) be arranged along the vertical direction, clamping section (520) be equipped with
The convex block of arcuation groove (141) clamping.
2. a kind of driving mechanism for shaker according to claim 1, it is characterised in that: output shaft and transmission shaft
(320) V belt translation connects.
3. a kind of driving mechanism for shaker according to claim 1, it is characterised in that: under support shaft (130)
Portion is equipped with the shaft shoulder, is connected between the bottom end and the shaft shoulder of transmission shaft (320) by thrust bearing.
4. a kind of driving mechanism for shaker according to claim 1, it is characterised in that: the top of support shaft (130)
Thrust bearing is additionally provided between end and drive shaft (340), and the top of thrust bearing abuts with drive shaft (340), bottom end and support
Axis (130) abuts.
5. a kind of driving mechanism for shaker according to claim 1, it is characterised in that: elastic component (400) is bullet
Spring, one end of spring is abutted with upper driving platform (360), the other end is abutted with boss (120).
6. a kind of driving mechanism for shaker according to claim 1, it is characterised in that: above drive platform (360) with
The structure of lower driving platform (350) is symmetrical above and below.
7. a kind of driving mechanism for shaker according to claim 6, it is characterised in that: the first contact block (351)
Quantity be it is multiple, multiple first contact blocks (351) are along the circumferential direction uniformly arranged.
8. a kind of driving mechanism for shaker according to claim 7, it is characterised in that: the first contact block (351) with
Upper driving platform (360) joint is equipped with guide section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811604747.2A CN109482092B (en) | 2018-12-26 | 2018-12-26 | Driving mechanism for oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811604747.2A CN109482092B (en) | 2018-12-26 | 2018-12-26 | Driving mechanism for oscillator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109482092A true CN109482092A (en) | 2019-03-19 |
| CN109482092B CN109482092B (en) | 2021-03-26 |
Family
ID=65712380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811604747.2A Active CN109482092B (en) | 2018-12-26 | 2018-12-26 | Driving mechanism for oscillator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109482092B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111748446A (en) * | 2020-07-02 | 2020-10-09 | 中国人民公安大学 | Water quality microorganism detection device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004154649A (en) * | 2002-11-05 | 2004-06-03 | Sanyo Electric Co Ltd | Shaking apparatus |
| CN201579021U (en) * | 2009-12-09 | 2010-09-15 | 盖福亮 | Blood collecting oscillation instrument |
| JP4700169B2 (en) * | 2000-06-15 | 2011-06-15 | 株式会社アイラー千野 | Shaker |
| CN103041738A (en) * | 2011-10-15 | 2013-04-17 | 四川汇利实业有限公司 | Oscillator capable of rapidly moving |
| CN103706275A (en) * | 2014-01-20 | 2014-04-09 | 北京达博创新科技开发有限公司 | Vortex oscillator |
| CN108579571A (en) * | 2018-04-28 | 2018-09-28 | 睿科仪器（厦门）有限公司 | It is a kind of simply to shake up structure without interference |
| CN108993281A (en) * | 2018-09-01 | 2018-12-14 | 董银 | A kind of microorganism multi-angle oscillation device |
-
2018
- 2018-12-26 CN CN201811604747.2A patent/CN109482092B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4700169B2 (en) * | 2000-06-15 | 2011-06-15 | 株式会社アイラー千野 | Shaker |
| JP2004154649A (en) * | 2002-11-05 | 2004-06-03 | Sanyo Electric Co Ltd | Shaking apparatus |
| CN201579021U (en) * | 2009-12-09 | 2010-09-15 | 盖福亮 | Blood collecting oscillation instrument |
| CN103041738A (en) * | 2011-10-15 | 2013-04-17 | 四川汇利实业有限公司 | Oscillator capable of rapidly moving |
| CN103706275A (en) * | 2014-01-20 | 2014-04-09 | 北京达博创新科技开发有限公司 | Vortex oscillator |
| CN108579571A (en) * | 2018-04-28 | 2018-09-28 | 睿科仪器（厦门）有限公司 | It is a kind of simply to shake up structure without interference |
| CN108993281A (en) * | 2018-09-01 | 2018-12-14 | 董银 | A kind of microorganism multi-angle oscillation device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111748446A (en) * | 2020-07-02 | 2020-10-09 | 中国人民公安大学 | Water quality microorganism detection device |
| CN111748446B (en) * | 2020-07-02 | 2022-04-12 | 中国人民公安大学 | Water quality microorganism detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109482092B (en) | 2021-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106512831B (en) | Reagent evenly mixing device and method | |
| CN106662230B (en) | With the stepless transmission for being uniformly input to output speed ratio independent of friction | |
| CN104008691B (en) | Teaching aid is shown in a kind of mechanical movement | |
| CN109482092A (en) | A kind of driving mechanism for shaker | |
| CN106041387A (en) | Industrial welding robot | |
| CN109589846A (en) | A kind of single multi-functional shaker of driving | |
| CN103879203A (en) | Multifunctional ellipsograph | |
| JP2002005255A (en) | Cam mechanism | |
| CN106400324B (en) | Needle pitch adjusting mechanism of sewing machine | |
| CN202812041U (en) | Intermittent type swinging rod reciprocating circular motion mechanism | |
| CN109589847A (en) | A kind of multi-functional shaker | |
| CN208099952U (en) | A kind of dividing and positioning mechanism | |
| CN205745148U (en) | A kind of low guide rail screw mandrel slide unit | |
| CN214643463U (en) | Turnover workbench for machining automobile parts | |
| CN210108295U (en) | Planetary gear rotary table | |
| CN112643884A (en) | Novel concrete mixing device with movable mixing shaft | |
| CN209441481U (en) | A kind of vortex speed changer mounting device | |
| CN104966435B (en) | Kinematics demonstrates basic platform | |
| CN209238766U (en) | A kind of tubing bar folder | |
| CN209299389U (en) | Astronomical camera switch and astronomical telescope | |
| CN207796018U (en) | Rotational motion to linear motion integrated device and equipment | |
| CN208399785U (en) | A kind of lens focusing driving mechanism and projector | |
| CN207534293U (en) | Shift fork assembling fixture | |
| CN105761604A (en) | Multifunctional modular planetary transmission teaching aid | |
| CN201705879U (en) | Device for converting circular movement into noncircular closed line movement, chronometer and tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |