CN102626688B - A kind of Efficient impeller-type pneumatic vibrator - Google Patents
A kind of Efficient impeller-type pneumatic vibrator Download PDFInfo
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- CN102626688B CN102626688B CN201210106243.4A CN201210106243A CN102626688B CN 102626688 B CN102626688 B CN 102626688B CN 201210106243 A CN201210106243 A CN 201210106243A CN 102626688 B CN102626688 B CN 102626688B
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Abstract
The present invention relates to a kind of Efficient impeller-type pneumatic vibrator, involving vibrations device housing (1), it is characterized in that: at the minimum impeller being provided with a pair compressed air-driven in vibrator housing (1) the inside, i.e. lobus sinister wheel (21) and lobus dexter wheel (22), lobus sinister wheel (21) and lobus dexter wheel (22) are arranged on left rotary shaft (31) and right spindle (32) respectively, Synchronous Transmission machine is arranged on left rotary shaft (31) and right spindle (32), the axle center (O1) that the center of gravity (A) of lobus sinister wheel (21) departs from left rotary shaft (31) forms eccentric throw L1, the axle center (O2) that the center of gravity (B) of lobus dexter wheel (22) departs from right spindle (32) forms eccentric throw L2, lobus sinister takes turns (21) and lobus dexter wheel (22) realizes synchronous pure rolling by synchronous drive mechanism and direction of rotation is contrary, the eccentric force that lobus sinister is taken turns on (21) and lobus dexter wheel (22) can some or all ofly be cancelled out each other in X-direction, stack up in Y direction, obtain larger directional vibration power, improve Y axis vibration amplitude, vibrating effect is good, efficiency is higher, price is low.
Description
1, technical field
The present invention relates to pneumatic element, espespecially a kind of for the vane type gas vibrator in vibratory sieve equipment.
2, background technology
The structure of traditional vibratory sieve as shown in Figure 1, comprises screen frame 01, is located at screen frame 01 opens meshed screen cloth 02, and is fixed on the vibration source 03 on screen frame 01.Vibration source 03 has employing ultrasonic vibration source, and also adopt gas vibrator, at present, ultrasonic vibration source price is higher, and vibration frequency is high, and vibrating effect is good, and gas vibrator due to vibration frequency and amplitude all less, vibrating effect is not good, and price is lower.
During existing gas vibrator drive load movement, load movement track mostly is irregular curve, and cannot realize the motion of the directed straight line of load, the idle work of consumption is more, and efficiency is lower.
3, summary of the invention
The object of the present invention is to provide a kind of Efficient impeller-type pneumatic vibrator, its structure is simple, and cost is low, and amplitude is large, and vibrating effect is good, and efficiency is higher.
The present invention is achieved by the following technical solution:
A kind of Efficient impeller-type pneumatic vibrator, involving vibrations device housing, the minimum impeller being provided with a pair compressed air-driven inside vibrator housing, i.e. lobus sinister wheel and lobus dexter wheel, lobus sinister wheel and lobus dexter wheel are arranged on left rotary shaft and right spindle respectively, synchronous drive mechanism is arranged on left rotary shaft and right spindle, the axle center of the deviation of gravity center left rotary shaft of lobus sinister wheel forms eccentric throw L1, the axle center of the deviation of gravity center right spindle of lobus dexter wheel forms eccentric throw L2, lobus sinister is taken turns and lobus dexter wheel realizes synchronous pure rolling by synchronized transmission mechanism and direction of rotation is contrary, eccentric force on lobus sinister wheel and lobus dexter wheel can some or all ofly be cancelled out each other in X-direction, stack up in Y direction, obtain larger directional vibration power, improve Y axis vibration amplitude.
The center of gravity of lobus sinister wheel described above and the center of gravity of lobus dexter wheel are about Y-axis symmetry, and eccentric throw L1 equals eccentric throw L2.
The center of gravity of lobus sinister wheel described above and the center of gravity of lobus dexter wheel asymmetric about Y-axis, the unequal eccentric throw L2 of eccentric throw L1, the ratio of two eccentric throws 0.8 ~ 1 scope.
The absolute value of the difference of the center of gravity synchro angle θ 2 that the synchro angle θ 1 of the center of gravity of lobus sinister wheel described above takes turns with lobus dexter is the scope of 0 ~ 60 degree.
Above-mentioned synchronous drive mechanism comprises intermeshing left gear and right gear, and left gear and right gear are arranged on left rotary shaft and right spindle respectively.
Synchronous drive mechanism described above is toothed belt transmission or chain drive.
Three die cavities are provided with in vibrator housing described above, be respectively lower impressions, upper left die cavity and upper right die cavity, wherein lower impressions is built with the left gear of pair of meshing and right gear, in upper left die cavity and upper right die cavity, a toothed lobus sinister wheel is housed respectively and lobus dexter is taken turns.
Lobus sinister wheel described above is provided with lightening core and eccentric block, lobus dexter wheel is provided with lightening core and eccentric block, left rotary shaft and right spindle are by the rolling bearing supporting on the end cap on vibrator housing, and the air admission hole on vibrator housing is located on symmetrical centre face that lobus sinister wheel and lobus dexter take turns, steam vent is located at air admission hole central plane being parallel and on the section of vane rotary radius.
Cylinder die cavity equal sized by upper left die cavity described above and upper right die cavity, upper left die cavity is with there being one first through hole between lower impressions, upper right die cavity is with there being one second through hole between lower impressions, first through hole and the second through-hole diameter equal and opposite in direction, axle center are coplanar and parallel, upper left die cavity and the first through hole concentric, upper right die cavity and the second through hole concentric.
End cap described above is cylindrical, and end cap is respectively equipped with the bearing saddle bore for installing rolling bearing.
Lobus sinister wheel described above and lobus dexter wheel are identical.
The beneficial effect that the present invention has:
(1) utilizing compressed air to enter into gas vibrator housing from air inlet closes in upper impression, the thrust of gas is in lobus sinister wheel and right wheel rotation, lobus sinister is taken turns and lobus dexter wheel realizes synchronous pure rolling by synchronous drive mechanism and direction of rotation is contrary, eccentric force on lobus sinister wheel and lobus dexter wheel can some or all ofly be cancelled out each other in X-direction, stack up in Y direction, obtain larger directional vibration power, improve Y axis vibration amplitude, structure is simple, cost is low, amplitude is large, vibrating effect is good, efficiency is higher, price is equivalent to 1/20 of ultrasonic vibrator, but Oscillation Amplitude is large, the vibrating effect produced is suitable with ultrasonic vibrator.
(2) center of gravity of lobus sinister wheel and the center of gravity of lobus dexter wheel are about Y-axis symmetry, and eccentric throw L1 equals eccentric throw L2, and the eccentric force on lobus sinister wheel and lobus dexter wheel is all cancelled out each other in X-direction, and Y direction obtains maximum amplitude effect.
(3) lobus sinister wheel center of gravity and lobus dexter wheel center of gravity asymmetric about Y-axis, the unequal eccentric throw L2 of eccentric throw L1, the ratio of two eccentric throws 0.8 ~ 1 scope, or the absolute value of the difference of the center of gravity synchro angle θ 2 that the synchro angle θ 1 of the center of gravity of lobus sinister wheel takes turns with lobus dexter is the scope of 0 ~ 60 degree, eccentric force on lobus sinister wheel and lobus dexter wheel can partly be cancelled out each other in X-direction, stack up in Y direction, obtain larger directional vibration power, improve Y axis vibration amplitude.
(4) three die cavities are provided with in vibrator housing, be respectively lower impressions, upper left die cavity and upper right die cavity, wherein lower impressions is built with the left gear of pair of meshing and right gear, in upper left die cavity and upper right die cavity, a toothed lobus sinister wheel and lobus dexter wheel are housed respectively, lobus sinister wheel is provided with lightening core and eccentric block, lobus dexter wheel is provided with lightening core and eccentric block, left rotary shaft and right spindle are by the rolling bearing supporting on the end cap on vibrator housing, air admission hole on vibrator housing is located on the symmetrical centre face of lobus sinister wheel and lobus dexter wheel, steam vent is located at air admission hole central plane being parallel and on the section of vane rotary radius, because compressed-air actuated air inlet is on the symmetrical centre face of two impellers, exhaust is located at air admission hole central plane being parallel and on the section of vane rotary radius, the other end of two impellers is connected with the gear of pair of meshing by axle, and impeller is furnished with eccentric block, such impeller has the restriction of meshing gear when rotated, make impeller with synchronous rotary in opposite directions, structure is simple, install easy to manufacture, low cost of manufacture.
(5) housing of vibrator adopts upper/lower terminal open architecture, in processing, installs all easily, greatly saves processing cost, when changing easily after arbitrary wearing and tearing, thus reduces the maintenance cost of gas vibrator, increases the service life.Impeller is arranged in two die cavities with gear simultaneously, by the clearance seal of gear shaft between two die cavities, compressed air is effectively acted on impeller, and the rotation of gear has and can not have an impact to the rotation of impeller.
4, accompanying drawing illustrates:
Fig. 1 is the structural representation of traditional vibratory sieve;
Fig. 2 is vane type gas vibrator profile of the present invention.
Fig. 3 is the A-A sectional view of a kind of structure of Fig. 2.
Fig. 4 is the A-A sectional view of the another kind of structure of Fig. 2.
Fig. 5 is gas vibrator housing profile of the present invention.
Fig. 6 is a kind of end cap sectional view of the present invention.
Fig. 7 is the another kind of end cap sectional view of the present invention.
Fig. 8 is principle schematic of the present invention.
Fig. 9 is the force analysis figure of Fig. 8.
5, detailed description of the invention:
Below in conjunction with accompanying drawing, embodiments of the present invention are described further:
As Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, shown in Fig. 8 and Fig. 9, a kind of Efficient impeller-type pneumatic vibrator, involving vibrations device housing 1, the minimum impeller being provided with a pair compressed air-driven inside vibrator housing 1, i.e. lobus sinister wheel 21 and lobus dexter wheel 22, lobus sinister wheel 21 and lobus dexter wheel 22 are arranged on left rotary shaft 31 and right spindle 32 respectively, synchronous drive mechanism is arranged on left rotary shaft 31 and right spindle 32, the center of gravity A of lobus sinister wheel 21 departs from the axle center O1 formation eccentric throw L1 of left rotary shaft 31, the center of gravity B of lobus dexter wheel 22 departs from the axle center O2 formation eccentric throw L2 of right spindle 32, lobus sinister wheel 21 and lobus dexter wheel 22 realizes synchronous pure rolling by synchronized transmission mechanism and direction of rotation is contrary, the eccentric force that lobus sinister is taken turns on 21 and lobus dexter wheel 22 can some or all ofly be cancelled out each other in X-direction, stack up in Y direction, obtain larger directional vibration power, improve Y axis vibration amplitude, Y direction is the direction that vibration exports.
When the center of gravity A of lobus sinister the wheel 21 and center of gravity B of lobus dexter wheel 22 is symmetrical about Y-axis, eccentric throw L1 equals eccentric throw L2, and the eccentric force on lobus sinister wheel and lobus dexter wheel is all cancelled out each other in X-direction, and Y direction obtains maximum amplitude effect, loss is minimum, most effective.
When the center of gravity A of lobus sinister the wheel 21 and center of gravity B of lobus dexter wheel 22 is asymmetric about Y-axis, the unequal eccentric throw L2 of eccentric throw L1, the ratio of two eccentric throws 0.8 ~ 1 scope, eccentric force on lobus sinister wheel and lobus dexter wheel can partly be cancelled out each other in X-direction, stack up in Y direction, obtain larger directional vibration power, improve Y axis vibration amplitude, but be not preferred plan.
The difference of taking turns the center of gravity B synchro angle θ 2 of 22 when synchro angle θ 1 and the lobus dexter of the center of gravity A of lobus sinister wheel 21 is the scope of 0 ~ 60 degree, eccentric force on lobus sinister wheel and lobus dexter wheel can partly be cancelled out each other in X-direction, stack up in Y direction, obtain larger directional vibration power, improve Y axis vibration amplitude, but be not preferred plan.
Synchronous drive mechanism comprises intermeshing left gear 41 and right gear 42, and left gear 41 and right gear 42 are arranged on left rotary shaft 31 and right spindle 32 respectively, and tooth-formation of gear can be straight-tooth, helical teeth and herringbone tooth, and this example gear is straight-tooth; A pair gear of engagement is that profile of tooth, modulus, the number of teeth, gear thickness are identical; The gear number of teeth is 8 ~ 25.
Three die cavities are provided with in above-mentioned vibrator housing 1, be respectively lower impressions 16, upper left die cavity 17 and upper right die cavity 18, wherein lower impressions 16 is built with the left gear 41 of pair of meshing and right gear 42, in upper left die cavity 17 and upper right die cavity 18, a toothed lobus sinister wheel 21 and lobus dexter wheel 22 are housed respectively, lobus sinister wheel 21 is provided with lightening core 211 and eccentric block 212, lobus dexter wheel 22 is provided with lightening core 221 and eccentric block 222, left rotary shaft 31 and right spindle 32 are supported by the rolling bearing 5 on the end cap 6 on vibrator housing 1, air admission hole 14 on vibrator housing 1 is located on the symmetrical centre face of lobus sinister wheel 21 and lobus dexter wheel 22, steam vent 15 is located at air admission hole 14 central plane being parallel and on the section of vane rotary radius, cylinder die cavity equal sized by upper left die cavity 17 and upper right die cavity 18, upper left die cavity 17 is with there being one first through hole 191 between lower impressions 16, upper right die cavity 18 is with there being one second through hole 192 between lower impressions 16, first through hole 191 is equal with the second through hole 192 diameter, axle center is coplanar and parallel, upper left die cavity 17 and the first through hole 191 concentric, upper right die cavity 18 and the second through hole 192 concentric, described end cap 6 is cylindrical, end cap 6 is respectively equipped with the bearing saddle bore 61 for installing rolling bearing 5.Upper left die cavity 17 and upper right die cavity 18 centre-to-centre spacing are two gears meshing centre-to-centre spacing.Lightening core number on impeller is more than or equal to 1, and eccentric block number is more than or equal to 1, and this example impeller lightening core number is 3, and eccentric block number is 1, when mounted the lower formal dress of one, impeller one anti-dress.Gear shaft can be made of one with gear; Synchronous drive mechanism also can be synchronous drive mechanism is toothed belt transmission or chain drive.
Lobus sinister wheel 21 described above and lobus dexter wheel 22 can be identical.
Vibrator housing 1 adopts upper/lower terminal open architecture, in processing, installs all easily, greatly saves processing cost, when changing easily after arbitrary wearing and tearing, thus reduces the maintenance cost of gas vibrator, increases the service life.Impeller is arranged in two independent die cavities with gear simultaneously, by the clearance seal of gear shaft between two die cavities, compressed air is effectively acted on impeller, and the rotation of gear can not have an impact to the rotation of impeller, make directional vibration more steady.
Principle of the present invention is: as shown in Figure 8 and Figure 9, the center of gravity A of lobus sinister wheel 21 departs from the axle center O1 formation eccentric throw L1 of left rotary shaft 31, the center of gravity B of lobus dexter wheel 22 departs from the axle center O2 formation eccentric throw L2 of right spindle 32, lobus sinister wheel 21 and lobus dexter wheel 22 realizes synchronous pure rolling by synchronized transmission mechanism and direction of rotation is contrary, the line of AO1 is rotated counterclockwise around axle center O1, the line of BO2 turns clockwise around axle center O2, and the absolute value of taking turns the difference of the center of gravity B synchro angle θ 2 of 22 at synchro angle θ 1 and the lobus dexter of the center of gravity A of lobus sinister wheel 21 is the scope of 0 ~ 60 degree; When eccentric throw L1 equals eccentric throw L2, when synchro angle θ 1 is 0 with the differential seat angle of synchro angle θ 2, just in time symmetrical, eccentric force on lobus sinister wheel and lobus dexter wheel can all be cancelled out each other in X-direction, stack up in Y direction, obtain maximum directional vibration power, improve Y axis vibration amplitude, be preferred plan, obtain directed rectilinear motion effect.
When eccentric throw L1 is not equal to eccentric throw L2, both have a little gap, or eccentric throw L1 equal eccentric throw L2 and synchro angle θ 1 is not 0 with the differential seat angle of synchro angle θ 2 time, the direction Y direction that active force exports in vibration stacks up, obtain larger directional vibration power, improve Y axis vibration amplitude, but also remain certain active force in X-direction, forming curves movement locus.
In fig .9, be rotated counterclockwise around axle center O1 by the center of gravity A of lobus sinister wheel 21, produce directed force F 1 in tangential direction, it is F3 and F5 that directed force F 1 is decomposed at the active force of X-axis and Y-axis, the center of gravity B of lobus dexter wheel 22 turns clockwise around axle center O2, directed force F 2 is produced in tangential direction, it is F4 and F6 that directed force F 2 is decomposed at the active force of X-axis and Y-axis, directed force F 3 is close with directed force F 4 size, direction is contrary, therefore whole or major part offsets the active force of X-direction, active force is F5 and active force is that F6 size is close, direction is consistent, superposition is obtained in the Y-axis of vibration outbound course, thus obtain larger amplitude, although when vibration frequency does not promote, Oscillation Amplitude significantly promotes, vibrating effect is good, efficiency is higher, price is equivalent to 1/20 of ultrasonic vibrator, but Oscillation Amplitude is large, the vibrating effect produced is suitable with ultrasonic vibrator.
Claims (10)
1. an Efficient impeller-type pneumatic vibrator, involving vibrations device housing (1), it is characterized in that: at the minimum impeller being provided with a pair compressed air-driven in vibrator housing (1) the inside, i.e. lobus sinister wheel (21) and lobus dexter wheel (22), lobus sinister wheel (21) and lobus dexter wheel (22) are arranged on left rotary shaft (31) and right spindle (32) respectively, synchronous drive mechanism is arranged on left rotary shaft (31) and right spindle (32), the axle center (O1) that the center of gravity (A) of lobus sinister wheel (21) departs from left rotary shaft (31) forms eccentric throw L1, the axle center (O2) that the center of gravity (B) of lobus dexter wheel (22) departs from right spindle (32) forms eccentric throw L2, lobus sinister takes turns (21) and lobus dexter wheel (22) realizes synchronous pure rolling by synchronous drive mechanism and direction of rotation is contrary, the eccentric force that lobus sinister is taken turns on (21) and lobus dexter wheel (22) can some or all ofly be cancelled out each other in X-direction, stack up in Y direction, obtain larger directional vibration power, improve Y axis vibration amplitude,
Three die cavities are provided with in vibrator housing (1), be respectively lower impressions (16), upper left die cavity (17) and upper right die cavity (18), in upper left die cavity (17) and upper right die cavity (18), toothed lobus sinister wheel (21) and lobus dexter wheel (22) be housed respectively.
2. a kind of Efficient impeller-type pneumatic vibrator according to claim 1, it is characterized in that: the center of gravity (B) of the center of gravity (A) of lobus sinister wheel (21) and lobus dexter wheel (22) is symmetrical about Y-axis, and eccentric throw L1 equals eccentric throw L2.
3. a kind of Efficient impeller-type pneumatic vibrator according to claim 1, it is characterized in that: the center of gravity (B) of the center of gravity (A) of lobus sinister wheel (21) and lobus dexter wheel (22) is asymmetric about Y-axis, the unequal eccentric throw L2 of eccentric throw L1, the ratio of two eccentric throws 0.8 ~ 1 scope.
4. a kind of Efficient impeller-type pneumatic vibrator according to claim 1, is characterized in that: synchro angle θ 1 and the lobus dexter of the center of gravity (A) of lobus sinister wheel (21) absolute value of taking turns the difference of center of gravity (B) the synchro angle θ 2 of (22) is the scope of 0 ~ 60 degree.
5. a kind of Efficient impeller-type pneumatic vibrator according to claim 1 or 2 or 3 or 4, it is characterized in that: synchronous drive mechanism comprises intermeshing left gear (41) and right gear (42), and left gear (41) and right gear (42) are arranged on left rotary shaft (31) and right spindle (32) respectively.
6. a kind of Efficient impeller-type pneumatic vibrator according to claim 1 or 2 or 3 or 4, is characterized in that: synchronous drive mechanism is toothed belt transmission or chain drive.
7. a kind of Efficient impeller-type pneumatic vibrator according to claim 5, is characterized in that: lower impressions (16) is built with the left gear (41) of pair of meshing and right gear (42).
8. a kind of Efficient impeller-type pneumatic vibrator according to claim 7, it is characterized in that: lobus sinister wheel (21) is provided with lightening core (211) and eccentric block (212), lobus dexter wheel (22) is provided with lightening core (221) and eccentric block (222), left rotary shaft (31) and right spindle (32) are by rolling bearing (5) supporting on the end cap (6) on vibrator housing (1), air admission hole (14) on vibrator housing (1) is located on the symmetrical centre face of lobus sinister wheel (21) and lobus dexter wheel (22), steam vent (15) is located at air admission hole (14) central plane being parallel and on the section of vane rotary radius.
9. a kind of Efficient impeller-type pneumatic vibrator according to claim 7, it is characterized in that: cylinder die cavity equal sized by upper left die cavity (17) and upper right die cavity (18), one first through hole (191) is had between upper left die cavity (17) same to lower impressions (16), one second through hole (192) is had between upper right die cavity (18) same to lower impressions (16), first through hole (191) is equal with the second through hole (192) diameter, axle center is coplanar and parallel, upper left die cavity (17) and the first through hole (191) concentric, upper right die cavity (18) and the second through hole (192) concentric.
10. a kind of Efficient impeller-type pneumatic vibrator according to claim 8, it is characterized in that: described end cap (6) is cylindrical, end cap (6) is respectively equipped with the bearing saddle bore (61) for installing rolling bearing (5).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210106243.4A CN102626688B (en) | 2012-04-11 | 2012-04-11 | A kind of Efficient impeller-type pneumatic vibrator |
| PCT/CN2013/071107 WO2013152636A1 (en) | 2012-04-11 | 2013-01-30 | Pneumatic vibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210106243.4A CN102626688B (en) | 2012-04-11 | 2012-04-11 | A kind of Efficient impeller-type pneumatic vibrator |
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| CN102626688A CN102626688A (en) | 2012-08-08 |
| CN102626688B true CN102626688B (en) | 2016-02-03 |
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| CN201210106243.4A Expired - Fee Related CN102626688B (en) | 2012-04-11 | 2012-04-11 | A kind of Efficient impeller-type pneumatic vibrator |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013152636A1 (en) * | 2012-04-11 | 2013-10-17 | 裕东（中山）机械工程有限公司 | Pneumatic vibrator |
| CN105855157B (en) * | 2016-05-26 | 2018-10-23 | 上海交通大学 | Flow induced vibrations device |
| CN107587304A (en) * | 2016-07-07 | 2018-01-16 | 深圳创新设计研究院有限公司 | Hand-held car washing installation |
| CN106720825A (en) * | 2016-12-22 | 2017-05-31 | 青岛祥智电子技术有限公司 | A kind of air energy heat cycle preserved fruit drying apparatus |
| CN106612958A (en) * | 2016-12-29 | 2017-05-10 | 东北农业大学 | Vibration adjustable walnut picking machine |
| CN106723852A (en) * | 2017-03-10 | 2017-05-31 | 安徽理工大学 | A kind of multi-function health-care beauty hair blowing machine |
| CN106666989A (en) * | 2017-03-10 | 2017-05-17 | 安徽理工大学 | Hair drier with massage, hair care, hairdressing and shaping functions |
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| US4927289A (en) * | 1988-06-24 | 1990-05-22 | M-B-W Inc. | Vibratory mechanism for a compaction roller |
| CN101997357A (en) * | 2010-11-19 | 2011-03-30 | 西安理工大学 | Generation method of one-way aperiodic vibration of single motor and one-way aperiodic vibration device |
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| CN202621427U (en) * | 2012-04-11 | 2012-12-26 | 裕东（中山）机械工程有限公司 | High-efficiency impeller type pneumatic vibrator |
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| DE29922369U1 (en) * | 1999-12-21 | 2000-03-30 | Netter Gmbh | Turbine vibrator |
| CN201768670U (en) * | 2010-06-07 | 2011-03-23 | 桓达科技股份有限公司 | Improved turbine vibrator structure |
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|---|---|---|---|---|
| US3292835A (en) * | 1964-03-28 | 1966-12-20 | Philips Corp | Vibratory drive for intermittent tape transport |
| JPS5740027A (en) * | 1980-08-21 | 1982-03-05 | Minoru Kuroda | Vibrator for construction machine |
| US4927289A (en) * | 1988-06-24 | 1990-05-22 | M-B-W Inc. | Vibratory mechanism for a compaction roller |
| CN101997357A (en) * | 2010-11-19 | 2011-03-30 | 西安理工大学 | Generation method of one-way aperiodic vibration of single motor and one-way aperiodic vibration device |
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