CN101972690A - Variable-rigidity double-mass vibration motor type super-huge vibration mill - Google Patents
Variable-rigidity double-mass vibration motor type super-huge vibration mill Download PDFInfo
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- CN101972690A CN101972690A CN 201010504005 CN201010504005A CN101972690A CN 101972690 A CN101972690 A CN 101972690A CN 201010504005 CN201010504005 CN 201010504005 CN 201010504005 A CN201010504005 A CN 201010504005A CN 101972690 A CN101972690 A CN 101972690A
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Abstract
The invention relates to a vibration mill, in particular to a variable-rigidity double-mass vibration motor type super-huge vibration mill, more particularly to a variable-rigidity double-mass vibration motor type common vibration mill or super-huge vibration mill. The vibration mill comprises an upper mass, a lower mass, a master vibration spring, an isolation vibration spring and a base plate, wherein the upper mass comprises a barrel body, a feed port, an end cover, a discharge port, a vibration motor, a right connecting rack, a milling medium, a left connecting rack and a counterweight body; the barrel body can be actively supported on the lower mass through the master vibration spring, the right side of the barrel body is rigidly and fixedly connected with the vibration motor by using the right connecting rack, and the axis of the drive side master vibration spring is located between the gravity axis of the barrel and the gravity axis of the vibration motor; and the lower mass is supported on a pedestal through the isolation vibration spring, and the left side of the barrel is rigidly and fixedly connected with the counterweight body with mass balanced to the right side.
Description
Technical field
The present invention becomes the super-huge vibromill of rigidity double-mass vibrating electric motor type and relates to a kind of vibromill, and particularly a kind of general vibromill or super-huge vibromill with change rigidity, two plastid, vibrating motor exciting form belongs to vibration and utilize field of engineering technology.
Background technology
Vibromill is to utilize vibration principle to finish the vibrating mechanical equipment of material comminution process, common vibromill is made of the one or more tubulars or other shapes of containers that are bearing on the spring, this container or by one in center of gravity rotation or by a plurality of vibrating motors that are tuned on the center of gravity, be similar to the imbalance motion of circular vibration, be contained in mill in the grinding machine container be situated between (grinding charge material and medium) produce collision and friction, material pulverize be that self each other and mill is situated between because mill is situated between and chamber wall between collision and the result that brings of friction.The operative orientation motion that mill is situated between and is moulding vibrating motor, make material grinding, flow and transportation work normally carries out.
At present, the domestic and international particularly super-huge vibromill (barrel diameter＞1.5m of vibromill, volume＞10kL, the monotubular elemental body Chang Gangdu eccentric vibration mill (Zhang Shili that adopt of installed power＞200kW) more, super-huge vibromill and application thereof, metallurgical industry publishing house, 2007), its principle repeats no more, eccentric vibration mill can produce by circle, the inhomogeneous vibration oval and the linear combination of vibrations forms, additional ellipse and the straight-line oscillation that occurs of more common vibromill, can improve mill Jie speed, impulsive force and frictional force, increase crushing effect, but because grinding mill barrel materials inside, the impact of heterogeneous object complexity such as medium and barrel, collision, friction, flow and wait motion, system speed fluctuation in addition, the acceleration fluctuation, the influence of factors such as mains fluctuations can make shaking frequently of system, amplitude, exciting force, performance parameters such as oscillation intensity will change, and construction system has the varying load characteristic.Present situation is that following problem can appear in this type of vibromill, and problem is more outstanding after particularly maximizing:
(1) energy consumption height: because there is the low energy district in grinding mill barrel inside, and be normal stiffness system, make that the grinder system energy consumption under the varying load characteristic is still higher, efficient is lower.
(2) structure rapid wear: local housing construction strength weak, easily distortion, fragile; Cause and repair frequency height, or repair invalid.
(3) bearing problem: have impact, collision, frrction load between each part of bearing, the vicious circle that causes heating, wearing and tearing and lubricating oil scrap to pollute improves the bearing failure probability greatly.
(4) spring problem: existing vibromill metal coil spring, air spring or the rubber springs that adopt more, exist damping hour amplitude very big and organism stress is very big, amplitude was again little and efficient obviously reduces when damping was big.
(5) vibration isolation problem: vibration isolation weak effect during the work of elemental body vibrational system, continue, under big, the impact that changes, collision, the effect of shearing uniformly varying load, vibration directly can be passed to Equipment Foundations and had influence on peripheral equipment and building on the one hand, can make machine breakdown when serious and stop production, the long-time running service life of a machine shortens, the consumable accessory premature failure, the maintenance frequency increases, and influences the vibromill operate as normal; Can produce big noise on the other hand, make operator and surrounding enviroment be had a strong impact on or make it to stand as pollution source of noise.
(6) maximization is restricted: the problems referred to above are the difficult problems of puzzlement vibromill development always, more make its maximization or super-hugeization be subjected to serious restriction.
Summary of the invention
The present invention seeks to provides a kind of change rigidity double-mass vibrating electric motor type super-huge vibromill at above-mentioned weak point, to solve the aforementioned problems in the prior just, on the basis of carrying out theory analysis and test simulation, invent a kind of general vibromill or super-huge vibromill that becomes rigidity, two plastid, vibrating motor exciting form that have.
Technical scheme of the present invention is as follows:
Linear helical spring and elemental body structure at aforementioned vibromill, the present invention adopts nonlinear variable-stiffness spiral metal rubber coating main vibration spring, the variable-stiffness helix metal-rubber coats compound isolation spring and two plastid structures, the present invention has a cylindrical shell at least, the vibrating motor parts are rigidly fixed on this cylindrical shell as oscillation drive, biasing ground carries out exciting one-sided to cylindrical shell, promptly outside cylindrical shell gravity axis and center of gravity to its exciting, for the balance vibration motor quality is provided with a balanced body, the axle of spring of driving side is between the gravity axis of cylindrical shell and vibrating motor parts, drive the vibrating motor parts, mill Jie in the cylindrical shell can produce the circle by different size, the inhomogeneous vibration oval and the linear combination of vibrations forms, this is that system has the action effect that becomes stiffness characteristics, the variation of system load can make the circle of mill Jie oscillation trajectory, oval, rectilinear size has the variation of certain amplitude, and this will help improving the crush efficiency of system.
Vibrating motor is a power source among the present invention, is again exciting source.It is connected in cylindrical shell one side by hitch, and no matter vibrating motor is located at a left side or right side, its turn to cylindrical shell in the flow direction that is situated between of mill on the contrary, like this could be different with the vibromill of general circle vibration, realize rotatablely moving of mill loading.
The advantage that the present invention makes one-sided exciting is, the ellipse of the additional different different sizes constantly that occur and straight-line oscillation are for having important function by the raising rotary speed to improve transport process, and this point has the decision meaning for the effect that grinds.
The present invention becomes the super-huge vibromill of rigidity double-mass vibrating electric motor type and comprises plastid, following plastid, main vibration spring, isolation spring and base plate, wherein go up plastid and comprise cylindrical shell, charging aperture, end cap, discharging opening, vibrating motor, right hitch, mill Jie, left hitch and balance weight body, cylindrical shell actively is bearing in down on the plastid by main vibration spring.Right side at cylindrical shell is consolidated with vibrating motor with right hitch rigidity, and the axis of the main vibration spring of driving side is between the gravity axis of cylindrical shell and vibrating motor.The internal diameter of main vibration spring matches with the external diameter of its main vibration spring guide pillar, plays the support guide effect, reaches the purpose that makes the main vibration spring steady operation; Following plastid is bearing on the base by isolation spring, and the internal diameter of isolation spring matches with the external diameter of isolation spring guide pillar, plays the support guide effect equally.In like manner, be consolidated with the balance weight body that balances each other with the right side quality in the left side of cylindrical shell with left hitch, the axis of the main vibration spring in left side is between the gravity axis of cylindrical shell and balance weight body.
Last plastid, link by main vibration spring between the plastid down, the main vibration spring internal diameter matches with main vibration spring guide pillar external diameter on the upper and lower plastid, plays the purpose that can make the main vibration spring steady operation under large amplitude; Following plastid is bearing on the base by shock-absorbing spring; During work, vibrating motor drives goes up the plastid motion, because the effect of main vibration spring and shock-absorbing spring, upper and lower plastid is respectively with different amplitudes and acceleration vibration.Obviously, the amplitude and the acceleration of last plastid are bigger, can improve the collision impact breaking capacity of the interior medium of mill tube to material; The amplitude and the acceleration of following plastid are less, can reduce to pass to the dynamic loading on basis more greatly by isolation spring.
The change stiffness characteristics that the present invention has can obviously reduce the ratio of the weak energy range of cylindrical shell, and then cut down the consumption of energy, improve the capacity usage ratio of vibromill, comprehensively form than the technical characterstic that the prior art anti-vibration performance is good, structural reliability is high, noise is little, spring-bearing life is long with two plastids, for the further maximization of eccentric vibration mill and super-huge eccentric vibration mill now provides condition.
Below technical characterictic, the enforcement means of the two plastids among the present invention, main vibration spring, isolation spring three elements are described in detail it:
(1) two plastid structures: the two plastids among the present invention can make upper and lower plastid have main to shake, two kinds of mode of vibration isolation, realize different amplitude and vibration acceleration.From inventor's experimental study as can be seen, between last plastid and basis, by plastid down it is separated, can play good vibration isolation effect, this more normally used elemental body vibrational system has the vibration isolating effect that can't compare.
The frequency of vibration isolation mode in the double-mass vibrating grinding system, the frequency more than the main mode of shaking is little usually, and at this moment machine is passed to the dynamic loading reduction on basis, and the vibration of passing to basis or floor during machine works also will be along with minimizing.
Going up plastid among the present invention is the object that itself carries exciting source, because the complexity of the heterogeneous material collision of vibromill system, system constructing has the double-mass vibrating structure of obvious vibration isolating effect, can reduce the probability of system's initiating failure, the stability of raising system running.
(2) main vibration spring: the main vibration spring among the present invention is a variable-pitch screw rubber coating metal spring, form by metal spiral compression spring and rubber coating coating, metal coil spring is the distance of switching political loyalty, can ascending unidirectional array, also can be by bi-directional arrangement broad in the middle small in ends, its characteristic line is cumulative type non-linear line; Rubber adopts the rubber polymer of 80 percent above natural gum to be made.
In the main vibration spring owing to constitute the pitch variation of the helical structure of spring, add rubber coating, can make it to have significantly non-linear and required change stiffness characteristics, promptly utilize the characteristics that but Non-Linear Vibration construction system rigidity has to be increased, reduce with load with load, the system drive energy consumption is obviously reduced, realize that system effectiveness increases, the purpose of effectively energy-conservation, steady running.From the power spectrum curve figure of inventor test and acceleration time domain curve map as can be seen, the system's output acceleration time domain and the frequency domain variation characteristic that utilize Non-Linear Vibration to bring, can make vibrational system inertia force obviously improve, the time of vibration that reaches same particle sizes shortens dramatically than conventional vibration, operating efficiency significantly increases, and the granularity refinement degree obviously increases.
Metal coil spring plays the support framework effect in the main vibration spring, rubber coating works nonlinear characteristic and the damping and amortization effect that increases spring, can play the effect that improves bearing capacity, increase system stiffness and noise reduction, noise reduction, vibration damping when particularly in system load increase, sudden change or overload doubling-up taking place during work.
(3) isolation spring: the isolation spring among the present invention is a variable-pitch screw metal-rubber complex spring, and it is composited by variable-pitch screw metal spring and rubber spring two parts.The variable-pitch screw metal spring by a steel wire coil around constituting, described steel wire coil coiling structure, be in particular manufacturing craft with vulcanization of rubber clad metal spring surface, form cylindric variable-pitch screw metal-rubber complex spring.
The characteristic line of metal spring is a non-linear line in the isolation spring, can play the support framework effect; The size of pitch can be between each circle and gets different pitches, also can be several circles and is one group and get into several different pitches; Pitch can ascending unidirectional array, also can be by bi-directional arrangement broad in the middle small in ends; Rubber adhesive will increase the nonlinear characteristic and the damping and amortization of spring, utilize nonlinear characteristic can play the effect that improves bearing capacity, cuts down the consumption of energy, the damping and amortization that increases helps preventing the generation of system resonance and flutter, play the vibration insulation and noise reduction effect, can reduce influence to greatest extent Equipment Foundations.
Variable-pitch screw metal-rubber complex spring among the present invention is compared with rubber spring bigger rigidity, comparing with metal spring has bigger damping and amortization, so its effect is positive, obvious and unique, use than the occasion of big and load change wider range so be specially adapted to load such as the suspension frame structure of mining machinery, heavy vehicle, super-huge vibrating machine such as super-huge vibromill, vibratory sieve, batcher.
Description of drawings
The invention will be further described below with reference to accompanying drawing:
Concrete structure and embodiment proposed by the invention see accompanying drawing
Fig. 1 is that the present invention becomes the super-huge vibromill front view of rigidity double-mass vibrating electric motor type.
Fig. 2 is the B-B cutaway view that the present invention among Fig. 1 becomes the super-huge vibromill of rigidity double-mass vibrating electric motor type.
Fig. 3 is the operation principle that vibromill of the present invention is expressed in signal.
Fig. 4 is that signal expression vibromill of the present invention has the form of implementation of a vibrating motor.
Fig. 5 is the form of implementation that the counterweight employing vibrating motor of vibromill of the present invention is expressed in signal.
Fig. 6 is that signal expression vibromill of the present invention has the form of implementation of two vibrating motors.
Fig. 7 is that signal expression vibromill of the present invention has the form of implementation of four vibrating motors.
Mark among the figure: 1, vibrating motor, 2, cylindrical shell, 3, charging aperture, 4, end cap, 5, main vibration spring, 6, the main vibration spring guide pillar, 7, following plastid, 8, base, 9, isolation spring, 10, isolation spring guide pillar, 11, discharging opening, 12, right hitch, 13, mill is situated between, 14, left hitch, 15, balance weight body, 16, vibrating motor.
The specific embodiment
With reference to accompanying drawing 1-2, become the super-huge vibromill of rigidity double-mass vibrating electric motor type and comprise plastid, main vibration spring 5, main vibration spring guide pillar 6, following plastid 7, base 8, isolation spring 9 and isolation spring guide pillar 10, wherein go up plastid involving vibrations motor 1, cylindrical shell 2, charging aperture 3, end cap 4, discharging opening 11, right hitch 12, mill Jie 13, left hitch 14, balance weight body 15.
In the represented structure of accompanying drawing 1-2, cylindrical shell 2 by main vibration spring 12 actively twelve Earthly Branches hold on plastid 7 down.Right side at cylindrical shell 2 is consolidated with vibrating motor 1 with right hitch 12 rigidity, and the axis of the main vibration spring 5 of driving side is between the gravity axis of cylindrical shell 2 and vibrating motor 1.The internal diameter of main vibration spring 5 matches with the external diameter of its main vibration spring guide pillar 6, plays the support guide effect, reaches the purpose that makes the main vibration spring steady operation; Following plastid 7 is bearing on the base 8 by isolation spring 9, and the internal diameter of isolation spring 9 matches with the external diameter of isolation spring guide pillar 10, plays the support guide effect equally.In like manner, be consolidated with the balance weight body 15 that balances each other with the right side quality in the left side of cylindrical shell 2 with left hitch 14, the axis of the main vibration spring 5 in left side is between the gravity axis of cylindrical shell 2 and balance weight body 15.Inner barrel is equipped with the medium ball and the grinding charge material of different-grain diameter, what represent among the figure is under the vibrating motor rotation situation in the clockwise direction, the motion process that mill is situated between in the cylindrical shell, the end cap 4 on the cylindrical shell, charging aperture 3, discharging opening 11 have been represented among the figure, described balance weight body 15 described balance weight body adopt the case structure of built-in pouring weight, be consolidated in the cylindrical shell left side with left hitch 14 rigidity, realize balance with right side vibrating motor quality.
Described vibrating motor has one at least.
During work, vibrating motor 1 drives the whole plastid motion of going up, and sees in conjunction with Fig. 3,4, because one-sided exciting, mill Jie 13 oscillation trajectories are rounded in vibrating motor 1 place side in the cylindrical shell 2, through the elliptic vibration at the center, change in the linear vibration of cylindrical shell 2 with vibrating motor 1 a relative side; Because system becomes the effect of stiffness characteristics, the variation of system load makes circle, ellipse, the rectilinear size of mill Jie oscillation trajectory have the variation of certain amplitude, and this will help improving the crush efficiency of system.
Because the effect of main vibration spring 5 and isolation spring 9, upper and lower plastid are respectively with different amplitudes and acceleration vibration.Obviously, the amplitude and the acceleration of last plastid are bigger, can improve the impact breaking capacity of cylindrical shell 2 interior media to material; The amplitude and the acceleration of following plastid 7 are less, can reduce to pass to the dynamic loading on basis more greatly by isolation spring 9, base 8.
Accompanying drawing 3 expressions, left side outside vibrating motor is located at gravity axis and center of gravity also is driven when doing counterclockwise to rotate, mill Jie 13 in the cylindrical shell 2 does clockwise rotation, when vibrating motor one side grinding Jie does circular whirling vibration, cylindrical shell center and right side are done ellipse, straight-line oscillation respectively, and the distance of the vibrating motor axis parallel with tubular axis is greater than the minimum range between cylindrical shell mid point and the cylinder inboard wall.
Compare the present invention with the vibromill prior art and have following advantage:
The present invention becomes the one-sided exciting of doing of stiffness characteristics, and the ellipse of the additional different different sizes constantly that occur and straight-line oscillation are for having important function by the raising rotary speed to improve transport process, and this point has the decision meaning for the effect that grinds;
The change stiffness characteristics that the present invention has can obviously reduce the ratio of the weak energy range of cylindrical shell, and then cuts down the consumption of energy, and improves the capacity usage ratio of vibromill;
The change stiffness characteristics that the present invention has is with two plastid structures, compared with prior art, has the advantages that anti-vibration performance is good, structural reliability is high, noise is little, spring-bearing life is long, for the further maximization of current super-huge vibromill provides condition.
Can connect into the different grinding machine of length with having the identical tube structure unit of diameter, to satisfy different grinding the operation and the time of staying, this just makes modularized design become possibility.
Below introduce four kinds of embodiment of the present invention, main shake, isolation spring is the same with pair plastid structure, repeat no more:
Accompanying drawing 4 is that signal expression vibromill of the present invention has the form of implementation of a vibrating motor.
It has a grinding machine container that can support quiveringly, and this container can be the super-huge vibromill cylindrical shell 1 of 1.8 meters of diameters, and its side is rigidly connected with a vibrating motor 1 outside gravity axis and center of gravity.The balance of vibrating motor quality by one be located at cylindrical shell opposite side axis with it the balance weight body 15 of balance finish.
The counterweight that vibromill of the present invention is expressed in accompanying drawing 5 signals can adopt the alternative form of implementation of vibrating motor.The balance weight body 15 of cylindrical shell 2 one sides can substitute by second vibrating motor 16.Vibromill can be selected or be driven by vibrating motor 1 or vibrating motor 16, and at this moment, another vibrating motor (16 or 1) always plays balance mass.This version allows the work of vibrating mill to have different vibrating motor parameters, as rotating speed and vibration diameter of a circle.
Accompanying drawing 6 expressions vibromill one side of the present invention has the embodiment of two vibrating motors.In this embodiment, the diameter of cylindrical shell 1 can be 3.7 meters, and cylindrical shell one side is equipped with two vibrating motors (1a, 1b) overlapping up and down, play the synchronous working of exciting effect outside cylindrical shell gravity axis and center of gravity.The balance of vibrating motor quality can realize with balance weight body 15.
Expression vibromill of the present invention has the embodiment of four vibrating motors in the accompanying drawing 7.In order to adapt to the different operations that grinds, can in a vibrating mill, make up two construction unit A, B etc., each construction unit can be provided with 2 vibrating motors as shown, and four vibrating motors can be arranged.
Claims (4)
1. one kind becomes the super-huge vibromill of rigidity double-mass vibrating electric motor type, it is characterized in that comprising plastid, following plastid, main vibration spring, isolation spring and base, wherein go up plastid and comprise cylindrical shell, charging aperture, end cap, discharging opening, vibrating motor, right hitch, mill Jie, left hitch and balance weight body; Cylindrical shell by main vibration spring actively twelve Earthly Branches hold on following plastid, right side at cylindrical shell is consolidated with vibrating motor with right hitch rigidity, the axis of the main vibration spring of driving side is between the gravity axis of cylindrical shell and vibrating motor, the internal diameter of main vibration spring matches with the external diameter of its main vibration spring guide pillar, play the support guide effect, reach the purpose that makes the main vibration spring steady operation; Following plastid is bearing on the base by isolation spring, the internal diameter of isolation spring matches with the external diameter of isolation spring guide pillar, play the support guide effect equally, left side at cylindrical shell is consolidated with the balance weight body that balances each other with the right side quality with left hitch rigidity, and the axis of the main vibration spring in left side is between the gravity axis of cylindrical shell and balance weight body.
2. the super-huge vibromill of change rigidity double-mass vibrating electric motor type according to claim 1, it is characterized in that described going up between plastid, the following plastid links by main vibration spring, the main vibration spring internal diameter matches with main vibration spring guide pillar external diameter on the upper and lower plastid, plays the purpose that still can make the main vibration spring steady operation under large amplitude.
3. the super-huge vibromill of change rigidity double-mass vibrating electric motor type according to claim 1 is characterized in that described balance weight body adopts the case structure of built-in pouring weight, is consolidated in the cylindrical shell left side with left hitch rigidity.
4. the super-huge vibromill of change rigidity double-mass vibrating electric motor type according to claim 1 is characterized in that described vibrating motor has one at least.
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| CN 201010504005 CN101972690A (en) | 2010-10-08 | 2010-10-08 | Variable-rigidity double-mass vibration motor type super-huge vibration mill |
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| CN 201010504005 CN101972690A (en) | 2010-10-08 | 2010-10-08 | Variable-rigidity double-mass vibration motor type super-huge vibration mill |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102327866A (en) * | 2011-04-23 | 2012-01-25 | 鞍山重型矿山机器股份有限公司 | Vibrating screen with double-layer screen box |
| CN104941764A (en) * | 2015-06-29 | 2015-09-30 | 江苏新鹏重型机电制造有限公司 | Three-mass asymmetric vibrating mill |
| CN107008542A (en) * | 2017-05-11 | 2017-08-04 | 张文飞 | Various dimensions vibration balancing resonance machine |
| CN107096614A (en) * | 2017-07-03 | 2017-08-29 | 南京工程学院 | Simultaneously coil spring is not ground convexity with the side-mounted double-mass vibrating of hybrid density medium |
| CN107138238A (en) * | 2017-07-03 | 2017-09-08 | 南京工程学院 | Simultaneously coil spring is not ground pitches with hybrid density vibration of media |
| CN107159401A (en) * | 2017-07-03 | 2017-09-15 | 南京工程学院 | Simultaneously coil spring is not ground pitches with the side-mounted double-mass vibrating of hybrid density medium |
| CN106423447B (en) * | 2016-11-24 | 2018-07-13 | 范明欣 | Food materials automatically control grinder |
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| CN1105293A (en) * | 1993-10-20 | 1995-07-19 | 过滤器技术有限公司 | Eccentric vibrating mill |
| CN101480629A (en) * | 2009-02-10 | 2009-07-15 | 南京工程学院 | Vibrating motor direct drive type double-mass monotubular vibrating grinding mill |
| CN101773865A (en) * | 2010-03-08 | 2010-07-14 | 南京工程学院 | Multistage eccentric block single barrel vibrating mill |
| CN201807416U (en) * | 2010-10-08 | 2011-04-27 | 南京工程学院 | Variable-rigidity double-mass vibrating motor type oversized vibrating mill |
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| CN1105293A (en) * | 1993-10-20 | 1995-07-19 | 过滤器技术有限公司 | Eccentric vibrating mill |
| CN101480629A (en) * | 2009-02-10 | 2009-07-15 | 南京工程学院 | Vibrating motor direct drive type double-mass monotubular vibrating grinding mill |
| CN101773865A (en) * | 2010-03-08 | 2010-07-14 | 南京工程学院 | Multistage eccentric block single barrel vibrating mill |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102327866A (en) * | 2011-04-23 | 2012-01-25 | 鞍山重型矿山机器股份有限公司 | Vibrating screen with double-layer screen box |
| CN104941764A (en) * | 2015-06-29 | 2015-09-30 | 江苏新鹏重型机电制造有限公司 | Three-mass asymmetric vibrating mill |
| CN106423447B (en) * | 2016-11-24 | 2018-07-13 | 范明欣 | Food materials automatically control grinder |
| CN107008542A (en) * | 2017-05-11 | 2017-08-04 | 张文飞 | Various dimensions vibration balancing resonance machine |
| CN107096614A (en) * | 2017-07-03 | 2017-08-29 | 南京工程学院 | Simultaneously coil spring is not ground convexity with the side-mounted double-mass vibrating of hybrid density medium |
| CN107138238A (en) * | 2017-07-03 | 2017-09-08 | 南京工程学院 | Simultaneously coil spring is not ground pitches with hybrid density vibration of media |
| CN107159401A (en) * | 2017-07-03 | 2017-09-15 | 南京工程学院 | Simultaneously coil spring is not ground pitches with the side-mounted double-mass vibrating of hybrid density medium |
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Application publication date: 20110216 |