CN102744194B - Electric synchronous vibration box - Google Patents
Electric synchronous vibration box Download PDFInfo
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- CN102744194B CN102744194B CN201210207353.XA CN201210207353A CN102744194B CN 102744194 B CN102744194 B CN 102744194B CN 201210207353 A CN201210207353 A CN 201210207353A CN 102744194 B CN102744194 B CN 102744194B
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- vibrating bin
- vibrating
- vibration
- cylindrical cavity
- bearing
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Abstract
The invention discloses an electric synchronous vibration box which comprises a vibration box shell. Two cylindrical cavities are arranged in the vibration box shell, wherein the axes of the two cylindrical cavities are located on the same horizontal plane and are parallel to each other; a vibration motor is fixed in each cylindrical cavity; and the rotor shafts of the vibration motors are parallel to each other. The vibration box has great structural strength, excellent structural expandability, good sealing property and good lubricating effect, and can remarkably increase the load bearing limit and rotation speed limit of the motor bearing so as to meet the needs of the vibration equipment with great vibration force and high rotation speed; and meanwhile, the electric synchronous vibration box disclosed by the invention can effectively solve the problems that the main shafts of the vibration motor are non-parallel, the vibration can not be synchronized and the vibration direction is disordered caused by the installation error.
Description
Technical field
The invention belongs to vibratory equipment technical field, particularly a kind of electric synchronous vibrating bin.
Background technology
Synchronous vibration has high, little to the equipment damage advantage of vibration efficiency, and its principle obtains extensive utilization in vibratory equipment.
At present, the synchronous vibration device adopted in vibratory equipment has 2 kinds, one adopts gear or bel-drivenn mechanical type synchronous vibration case, by gear or the identical eccentric counter-rotating of belt drive two, produces synchronous vibration, its complex structure, processing troublesome maintenance, and by mechanically operated restriction, higher vibration frequency and stronger vibration force cannot be provided, maximum speed to turn left the right side 3000, exceed this rotating speed just easily to damage, therefore can only be applied to common vibration field; Another kind is employing 2 identical vibrators, and be installed in parallel on a base, two vibrators start simultaneously, antikinesis, produce synchronous vibration, its concrete defect and limitation are: during installation, effectively cannot ensure two vibrating motor main axis parallel, cause vibrating motor cannot synchronously, produce single vibration, vibrational state is mixed and disorderly; Due to the continuous or vibration of interruption period and the design limitation of vibrating motor self-radiating, make its heat radiation power not enough, vibrating motor heating is seriously fragile; Because partial vibration equipment needs to vacuumize, vibrating motor is operated in vacuum environment, and radiating effect is undesirable, fragile; The vibration force of super large and Oscillation Amplitude require the limit and the vibrating motor body utmost carrying ability that greatly exceed bearing, can not meet vibratory equipment demand; Installing space is less, and common vibrating motor structural design is not compact, bulky, and installation difficulty is large, even cannot install; In load bearing requirements, some vibratory equipment requires to vibrate when precompression, and the installing space needed for vibrating motor is comparatively large, and pressure part can be caused to design; The vibration of high frequency brute force has exceeded rev limit and the utmost carrying ability of bearing, and common vibrating motor cannot solve bearing lubrication problem; Vibrating motor needs intermittent oiling maintaining, for the vibrating motor of continuous operation, high frequency and good power, refuel and safeguard more frequent, and existing vibrating motor does not have effective oil-bearing structure, maintaining frequency cannot be reduced, have a strong impact on operating time and the flow process of vibratory equipment.
Therefore, above-mentioned two kinds of each have their own shortcomings and limitations of vibrating device, can not meet the vibration demand of existing equipment.
Summary of the invention
The invention provides the electric synchronous vibrating bin that a kind of structural strength is large and result of use is good.
For achieving the above object, technical scheme of the present invention is: a kind of electric synchronous vibrating bin, involving vibrations case shell, be provided with the cylindrical cavity that two axis are positioned at same level, and the axis of two cylindrical cavities is parallel to each other in vibrating bin shell; Be installed with vibrating motor respectively in cylindrical cavity, the armature spindle of vibrating motor is parallel to each other.
Described vibrating motor is cylinder vibrating motor, and it comprises cylinder casing, stator, rotor and is fixed by screws in the bearing pedestal on cylinder casing end face, and the external diameter of the outer section of at least one end bearing block is not more than the external diameter of cylinder casing; Bearing pedestal is provided with bearing, and bearing inner race installs armature spindle, and armature spindle two ends superpose respectively and are provided with two pieces of vibration eccentric blocks; Armature spindle is arranged with the bearing door connected with bearing pedestal outer face; Be provided with screwed hole bottom described cylindrical cavity, be provided with screw in screwed hole, top, screw upper end is pressed on cylinder casing.
Described vibrating motor comprises stator, rotor and bearing pedestal, and stator and bearing pedestal are fixed in cylindrical cavity; Be provided with screwed hole bottom cylindrical cavity, be provided with screw in screwed hole, top, screw upper end is pressed on stator; Bearing pedestal is provided with bearing, and bearing inner race installs armature spindle, and armature spindle two ends superpose respectively and are provided with two pieces of vibration eccentric blocks; Armature spindle is arranged with the bearing door connected with bearing pedestal outer face.
Tank wall outside, described vibrating bin shell two ends is provided with heating panel.
Be provided with cool cycles passage in the tank wall of described vibrating bin shell two ends, cool cycles channel entrance and exit are provided with cooling fluid joint.
Described cylindrical cavity two ends are provided with end cap, are provided with sealing ring between end cap and vibrating bin shell.
The oil storage tank that described vibrating bin shell top is provided with tank filler sleeve and communicates with tank filler sleeve, oil storage tank bottom is provided with oil input channel, and oil input channel communicates with cylindrical cavity
.
Be provided with fixed head bottom the tank wall of described vibrating bin shell two ends, fixed head is provided with installing hole.
The tank wall of described vibrating bin shell is provided with installation screw.
Compared with prior art, advantage of the present invention is:
1, be provided with the cylindrical cavity that two axis are positioned at same level in vibrating bin shell of the present invention, and the axis of two cylindrical cavities is parallel to each other; In cylindrical cavity, be installed with cylinder vibrating motor respectively form electric synchronous vibrating bin, and the armature spindle of cylinder vibrating motor is parallel to each other, its structural strength is large, structure extension ability is excellent, good seal performance, there is good lubricant effect, greatly can improve utmost carrying ability and the rev limit of vibrating motor bearing, to meet good power and high-revolving vibratory equipment demand; Meanwhile, effectively can solve that the vibrating motor main shaft caused because of alignment error is not parallel, vibration cannot synchronously and the mixed and disorderly problem of direction of vibration.
2, the first cylinder vibrating motor and the second cylinder vibrating motor share same power supply, and during operation, both start simultaneously, direction of rotation or relative, and in horizontal direction, the direction of vibration force is contrary, and the vibration force in horizontal direction is cancelled out each other; In vertical direction, the direction of vibration force is identical, produces synchronous vibration, greatly can strengthen the vibration force in vertical direction.
3, to vibrate electric machine structure compact for the first cylinder vibrating motor and the second cylinder, vibrating bin shell can be made to bear larger pressure, meet the demand of equipment.
4, screwed hole is provided with bottom cylindrical cavity, be provided with screw in screwed hole, top, screw upper end is pressed on cylinder vibrating motor, when cylinder vibration motor damage needs dismounting, unclamp screw cylinder vibrating motor to be extracted out from cylindrical cavity, repair and maintenance is convenient and swift.
5, superpose respectively at the two ends of armature spindle be provided with two pieces vibration eccentric blocks, the angle of two adjacent vibration eccentric blocks can be adjusted as required, to realize the adjustment of exciting force, easy and simple to handle.
6, be provided with end cap at the two ends of cylindrical cavity, when vibration eccentric block breaks down disengaging armature spindle, end cap can play protective action, reduces security incident, safe and reliable.
7, be provided with sealing ring between end cap and vibrating bin shell, anti-sealing and steam can invade the inner and lubricating oil of vibrating bin shell to external leakage.
8, be provided with heating panel in the tank wall outside of vibrating bin shell, effectively can improve the heat-sinking capability of vibrating bin shell, meet cooling requirements.
9, in the two ends tank wall of vibrating bin shell, cool cycles passage is provided with, the import of cool cycles passage and exit are provided with cooling fluid joint, water circulation or oil circulation can be adopted to cool, the radiating requirements of vibrating bin shell each several part can be met, to adapt to the severe operational environment such as long time continuous working and vacuum.
10, bottom the two ends tank wall of vibrating bin shell, fixed head is provided with, fixed head is provided with installing hole, or on the tank wall of vibrating bin shell, be provided with installation screw, during use, vibrating bin shell is horizontally fixed on vibratory equipment by installing hole, or be fixedly mounted on vibratory equipment by installation screw, easy and simple to handle, be convenient to dismounting.
11, at the oil storage tank that vibrating bin shell top is provided with tank filler sleeve and communicates with tank filler sleeve, oil storage tank bottom is provided with oil input channel, oil input channel communicates with cylindrical cavity, grease lubrication mode can be adopted to lubricate bearing, in vibration running, lubricating grease flows to bearing from oil storage tank, use oil storage tank, can once add meet volume lubricating grease, reduce maintenance times.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1;
Fig. 2 is the A-A cutaway view in Fig. 1;
Fig. 3 is the B-B cutaway view in Fig. 1;
Fig. 4 is the C-C cutaway view in Fig. 1;
Fig. 5 is the D-D cutaway view in Fig. 1;
Fig. 6 is the E-E cutaway view in Fig. 1;
Fig. 7 is the structural representation of vibrating motor in Fig. 1;
Fig. 8 is the embodiment of the present invention 2 C-C cutaway view in FIG;
Fig. 9 is the embodiment of the present invention 2 E-E cutaway view in FIG.
Embodiment
Embodiment 1, electric synchronous vibrating bin as shown in figs. 1-7, its involving vibrations case shell 1, be provided with the first cylindrical cavity 2 and the second cylindrical cavity 3 that two axis are positioned at same level, and the axis of the first cylindrical cavity 2 and the second cylindrical cavity 3 is parallel to each other in vibrating bin shell 1; Set firmly in the first cylindrical cavity 2 and set firmly the second cylinder vibrating motor 5 in first cylinder vibrating motor 4, second cylindrical cavity 3 and form electric synchronous vibrating bin.The armature spindle of the first cylinder vibrating motor 4 and the second cylinder vibrating motor 5 is parallel to each other, and effectively can solve that the vibrating motor main shaft caused because of alignment error is not parallel, vibration cannot synchronously and the mixed and disorderly problem of direction of vibration.First cylinder vibrating motor 4 and the second cylinder vibrating motor 5 share same power supply, and during operation, both start simultaneously, direction of rotation or relative, and in horizontal direction, the direction of vibration force is contrary, and the vibration force in horizontal direction is cancelled out each other; In vertical direction, the direction of vibration force is identical, produces synchronous vibration, greatly can strengthen the vibration force in vertical direction.
Above-mentioned first cylinder vibrating motor 4 comprises cylinder casing 42, stator 6, rotor 7 and is fixed on the bearing pedestal 8 on cylinder casing 42 end face by screw 44, the external diameter of the outer section of two end axles bearing 8 is equal to the external diameter of cylinder casing 42, the external diameter of two end axles bearing 8 inner segment and the inwall of cylinder casing 42 suitable, rotor 7 is positioned on armature spindle 41.Bearing pedestal 8 is provided with bearing 9, and bearing 9 inner ring installs armature spindle 41.The two ends of armature spindle 41 superpose respectively and are provided with vibration eccentric block 10, can adjust the angle of two adjacent vibration eccentric blocks 10 as required, to realize the adjustment of exciting force, easy and simple to handle.Armature spindle 41 is also arranged with the bearing door 43 connected with bearing pedestal 8 outer face, fixation is played to bearing 9.Bottom the first cylindrical cavity 2, be provided with screwed hole 14, be provided with screw 11 in screwed hole 14, top, screw 11 upper end is pressed on cylinder casing 42, plays positioning action, be subjected to displacement to avoid the first cylinder vibrating motor 4 the first cylinder vibrating motor 4.When the first cylinder vibrating motor 4 damage needs dismounting, unclamping screw 11 can extract out the first cylinder vibrating motor 4 from the first cylindrical cavity 2, and repair and maintenance is convenient and swift.
Second cylinder vibrating motor 5 is identical with the structure of the first cylinder vibrating motor 4, and the second cylinder vibrating motor 5 is packed in the second cylindrical cavity 3 by screw, is subjected to displacement to avoid the second cylinder vibrating motor 5.When the second cylinder vibrating motor 5 damage needs dismounting, unclamping screw can overhaul the second cylinder vibrating motor 5 from the second cylindrical cavity 3 extraction.
Be provided with end cap 12 at the two ends of the first cylindrical cavity 2 and the second cylindrical cavity 3, when vibration eccentric block 10 breaks down disengaging armature spindle 41, end cap 12 can play protective action.Be provided with sealing ring 13 between end cap 12 and vibrating bin shell 1, anti-sealing and steam can invade the inner and lubricating oil of vibrating bin shell 1 to external leakage.Be provided with heating panel 15 in the tank wall outside, two ends of vibrating bin shell 1, effectively can improve the heat-sinking capability of vibrating bin shell 1, meet cooling requirements.Cool cycles passage 21 is provided with in the tank wall at vibrating bin shell 1 two ends, the import of cool cycles passage 21 and exit are provided with cooling fluid joint 22, water circulation or oil circulation can be adopted to cool, the radiating requirements of vibrating bin shell 1 each several part can be met, to adapt to the severe operational environment such as long time continuous working and vacuum.
Bottom the tank wall of vibrating bin shell 1, be provided with fixed head 16, fixed head 16 is provided with installing hole 17, or installation screw 23 is set on the tank wall of vibrating bin shell 1, be convenient to the dismounting of vibrating bin shell 1, swift to operate.When the present invention uses, vibrating bin shell 1 level can install placement, is fixed on vibratory equipment by installing hole 17; Or be fixedly mounted on vibratory equipment by the installation screw 23 on vibrating bin shell 1 sidewall.
The oil storage tank 19 being provided with tank filler sleeve 18 at vibrating bin shell 1 top and communicating with tank filler sleeve 18, oil storage tank 19 bottom is provided with oil input channel 20, oil input channel 20 communicates with the first cylindrical cavity 2 and the second cylindrical cavity 3, grease lubrication mode can be adopted to lubricate bearing 9, and in vibration running, lubricating grease flows to bearing 9 from oil storage tank 19.Use oil storage tank 19, can once add meet volume lubricating grease, reduce maintenance times.
In the present embodiment, vibrating bin shell 1 can adopt the mode of casting or welding to be made, and in order to meet good cooling requirements, the material of vibrating bin shell 1 can be cast iron, steel or other alloy material, such as: aluminum alloy materials.Two cylinder vibrating motors can be 50hz power frequency vibration motors, and Design of Inverter also can be used to become variant-frequency vibration motor or dither motor, to provide high frequency height rotating speed.
Embodiment 2, as shown in Figure 8 and Figure 9, the difference of itself and embodiment 1 is: the first vibrating motor 40 comprises stator 6, rotor 7 and bearing pedestal 8, stator 6 and bearing pedestal 8 are fixed in the first cylindrical cavity 2, the bottom of the first cylindrical cavity 2 is provided with screwed hole 14, is provided with screw 11 in screwed hole 14, and top, screw 11 upper end is pressed on stator 6, stator 6 is fixedly mounted in the first cylindrical cavity 2, is subjected to displacement to avoid the first vibrating motor 40.
Second vibrating motor 50 is identical with the structure of the first vibrating motor 40, and the second vibrating motor 50 is also packed in the second cylindrical cavity 3 by screw, is subjected to displacement to avoid the second vibrating motor 50.
When above-mentioned execution mode can ensure same vibration force, the volume of vibrating bin can be reduced further, reduce costs; Or when ensureing constancy of volume, strengthen structural strength, the anti-pressure ability of vibrating bin further; Or when ensureing constancy of volume, power and the vibration performance of vibrating motor can be increased.
Be not limited to above-mentioned execution mode, in the present invention: the motor down-lead mouth place of vibrating bin shell 1 also can arrange waterproof sealing structure, inner to prevent water and steam from invading vibrating bin shell 1; Bearing 9 also can adopt oil lubrication mode to lubricate, oil storage tank is located at the bottom of vibrating bin shell 1, also can not establish oil storage tank, directly using the first cylindrical cavity 2 and the second cylindrical cavity 3 as oil storage tank, when vibrating operation, lubricating oil splash forms fog lubrication bearing 9; The wall thickness of vibrating bin shell 1 is arranged according to actual needs, can meet certain bearing requirements, directly can be used as pressure-containing member; The external diameter of the outer section of two end axles bearing 8 also all can be less than the external diameter of cylinder casing 42; Also the external diameter of the wherein outer section of an end bearing block 8 can be made to be less than the external diameter of cylinder casing 42, and the external diameter of the outer section of other end bearing pedestal 8 is equal to, or greater than the external diameter of cylinder casing 42; The external diameter of the wherein outer section of an end bearing block 8 can also be made to equal the external diameter of cylinder casing 42, and the external diameter of the outer section of other end bearing pedestal 8 is greater than the external diameter of cylinder casing 42.
Claims (14)
1. an electric synchronous vibrating bin, is characterized in that: involving vibrations case shell, be provided with the cylindrical cavity that two axis are positioned at same level, and the axis of two cylindrical cavities is parallel to each other in vibrating bin shell; Be installed with vibrating motor respectively in cylindrical cavity, the armature spindle of vibrating motor is parallel to each other; Described vibrating motor is cylinder vibrating motor, and it comprises cylinder casing, stator, rotor and is fixed by screws in the bearing pedestal on cylinder casing end face, and the external diameter of the outer section of at least one end bearing block is not more than the external diameter of cylinder casing; Bearing pedestal is provided with bearing, and bearing inner race installs armature spindle, and armature spindle two ends superpose respectively and are provided with two pieces of vibration eccentric blocks; Armature spindle is arranged with the bearing door connected with bearing pedestal outer face; Be provided with screwed hole bottom described cylindrical cavity, be provided with screw in screwed hole, top, screw upper end is pressed on cylinder casing.
2. electric synchronous vibrating bin as claimed in claim 1, is characterized in that: tank wall outside, described vibrating bin shell two ends is provided with heating panel.
3. electric synchronous vibrating bin as claimed in claim 2, is characterized in that: be provided with cool cycles passage in the tank wall of described vibrating bin shell two ends, cool cycles channel entrance and exit are provided with cooling fluid joint.
4. electric synchronous vibrating bin as claimed in claim 3, is characterized in that: described cylindrical cavity two ends are provided with end cap, are provided with sealing ring between end cap and vibrating bin shell.
5. electric synchronous vibrating bin as claimed in claim 4, it is characterized in that: the oil storage tank that described vibrating bin shell top is provided with tank filler sleeve and communicates with tank filler sleeve, oil storage tank bottom is provided with oil input channel, and oil input channel communicates with cylindrical cavity
.
6. electric synchronous vibrating bin as claimed in claim 5, is characterized in that: be provided with fixed head bottom the tank wall of described vibrating bin shell, fixed head is provided with installing hole.
7. electric synchronous vibrating bin as claimed in claim 5, is characterized in that: the tank wall of described vibrating bin shell is provided with installation screw.
8. an electric synchronous vibrating bin, is characterized in that: involving vibrations case shell, be provided with the cylindrical cavity that two axis are positioned at same level, and the axis of two cylindrical cavities is parallel to each other in vibrating bin shell; Be installed with vibrating motor respectively in cylindrical cavity, the armature spindle of vibrating motor is parallel to each other; Described vibrating motor comprises stator, rotor and bearing pedestal, and stator and bearing pedestal are fixed in cylindrical cavity; Be provided with screwed hole bottom cylindrical cavity, be provided with screw in screwed hole, top, screw upper end is pressed on stator; Bearing pedestal is provided with bearing, and bearing inner race installs armature spindle, and armature spindle two ends superpose respectively and are provided with two pieces of vibration eccentric blocks; Armature spindle is arranged with the bearing door connected with bearing pedestal outer face.
9. electric synchronous vibrating bin as claimed in claim 8, is characterized in that: tank wall outside, described vibrating bin shell two ends is provided with heating panel.
10. electric synchronous vibrating bin as claimed in claim 9, is characterized in that: be provided with cool cycles passage in the tank wall of described vibrating bin shell two ends, cool cycles channel entrance and exit are provided with cooling fluid joint.
11. electric synchronous vibrating bins as claimed in claim 10, is characterized in that: described cylindrical cavity two ends are provided with end cap, are provided with sealing ring between end cap and vibrating bin shell.
12. electric synchronous vibrating bins as claimed in claim 11, is characterized in that: the oil storage tank that described vibrating bin shell top is provided with tank filler sleeve and communicates with tank filler sleeve, and oil storage tank bottom is provided with oil input channel, and oil input channel communicates with cylindrical cavity
.
13. electric synchronous vibrating bins as claimed in claim 12, is characterized in that: be provided with fixed head bottom the tank wall of described vibrating bin shell, fixed head is provided with installing hole.
14. electric synchronous vibrating bins as claimed in claim 12, is characterized in that: the tank wall of described vibrating bin shell is provided with installation screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210207353.XA CN102744194B (en) | 2012-06-21 | 2012-06-21 | Electric synchronous vibration box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210207353.XA CN102744194B (en) | 2012-06-21 | 2012-06-21 | Electric synchronous vibration box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102744194A CN102744194A (en) | 2012-10-24 |
| CN102744194B true CN102744194B (en) | 2015-04-29 |
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ID=47024887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210207353.XA Expired - Fee Related CN102744194B (en) | 2012-06-21 | 2012-06-21 | Electric synchronous vibration box |
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| Country | Link |
|---|---|
| CN (1) | CN102744194B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2226616A (en) * | 1988-06-24 | 1990-07-04 | Mbw Inc | Improved vibratory mechanism for a compaction roller |
| CN2076884U (en) * | 1990-06-27 | 1991-05-15 | 何雪梅 | self-synchronizing vibrator |
| CN2154131Y (en) * | 1993-05-04 | 1994-01-26 | 新乡市太行振动机械厂 | Double-axle vibrator |
| CN201346534Y (en) * | 2008-10-20 | 2009-11-18 | 新乡市强大振动机械有限公司 | Novel double-shaft vibrator |
| CN201510979U (en) * | 2009-09-11 | 2010-06-23 | 河南万泰机械有限公司 | Cooling mechanism of two-axis vibration generator |
| CN102468706A (en) * | 2010-11-08 | 2012-05-23 | 魏华 | Box type linear vibration motor |
| CN202638731U (en) * | 2012-06-21 | 2013-01-02 | 徐达 | Electric synchronous vibration box |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RO116255B1 (en) * | 1996-11-25 | 2000-12-29 | S.C. Asociaţia Pentru Inventică În Mecanică S.R.L. | Unidirectional mechanical vibrator |
-
2012
- 2012-06-21 CN CN201210207353.XA patent/CN102744194B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2226616A (en) * | 1988-06-24 | 1990-07-04 | Mbw Inc | Improved vibratory mechanism for a compaction roller |
| CN2076884U (en) * | 1990-06-27 | 1991-05-15 | 何雪梅 | self-synchronizing vibrator |
| CN2154131Y (en) * | 1993-05-04 | 1994-01-26 | 新乡市太行振动机械厂 | Double-axle vibrator |
| CN201346534Y (en) * | 2008-10-20 | 2009-11-18 | 新乡市强大振动机械有限公司 | Novel double-shaft vibrator |
| CN201510979U (en) * | 2009-09-11 | 2010-06-23 | 河南万泰机械有限公司 | Cooling mechanism of two-axis vibration generator |
| CN102468706A (en) * | 2010-11-08 | 2012-05-23 | 魏华 | Box type linear vibration motor |
| CN202638731U (en) * | 2012-06-21 | 2013-01-02 | 徐达 | Electric synchronous vibration box |
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| Publication number | Publication date |
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| CN102744194A (en) | 2012-10-24 |
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Granted publication date: 20150429 Termination date: 20180621 |