CN201799391U - Chaotic vibration exciter with secondary pendulum - Google Patents
Chaotic vibration exciter with secondary pendulum Download PDFInfo
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- CN201799391U CN201799391U CN2010205569336U CN201020556933U CN201799391U CN 201799391 U CN201799391 U CN 201799391U CN 2010205569336 U CN2010205569336 U CN 2010205569336U CN 201020556933 U CN201020556933 U CN 201020556933U CN 201799391 U CN201799391 U CN 201799391U
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- pendulum
- movable pendulum
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Abstract
The utility model relates to a vibration application engineering technology and in particular to a chaotic vibration exciter with special inertia as vibration capability, herein specifically referring to secondary pendulum. The chaotic vibration exciter herein comprises a vibration exciter seat component and a secondary pendulum component, wherein the vibration exciter seat component contains a vibration exciter seat, end covers, and a vibration exciter shaft which is mounted on the vibration exciter seat, the vibration exciter seat being provided with the end covers at two ends of the vibration exciter seat, the secondary pendulum component being configured symmetrically at the left and the right ends of the vibration exciter shaft, the secondary pendulum component including a standing pendulum, a primary pendulum, a secondary pendulum, a secondary pendulum shaft, a first bearing, and a second bearing, the secondary pendulum component being mounted at the shaft end of the vibration exciter, the standing pendulum being consolidated to the vibration exciter shaft through a level-key, a shaft sleeve being arranged between the primary pendulum and the standing pendulum, the primary pendulum hinging to the vibration exciter shaft through a first bearing, the lower portion of the primary pendulum being provided with a secondary pendulum shaft in the lower portion, the secondary pendulum hinging to the secondary pendulum shaft through a second bearing, the two ends of the vibration exciter seat being respectively consolidated to a pendulum shade.
Description
Technical field
The utility model relates to a kind of vibrator with special inertial excitation ability, and especially a kind of Chaotic Vibration Exciter with secondary movable pendulum belongs to vibration and utilizes field of engineering technology.
Background technology
Vibrator is the exciting source that forces system to carry out continuous mechanical oscillation by artificial given frequency, generally be divided into machinery, electronics two big classes, mechanical vibration exciter has the branch that whether contains power source again: the vibrator that contains power source is a vibrating motor, be to utilize the mechanical oscillation principle to drive the exciting source equipment of vibrating machine work, be power source be again exciting source; The common vibrator that does not contain power source can be realized moving by shaft coupling with power source such as common motor or engine and the transmission of power.
Common vibrator is the two ends in its rotating shaft, two groups of eccentric centering blocks (abbreviation centering block) are housed respectively form exciting source, every group of 2 of centering block is divided into the major-minor centering block, and shape often is fan-shaped, centering block all is consolidated on the exciter shaft, is called single axle inertial excitation device or one-level centering block vibrator.Vibrator during revolution is because the centrifugal action of centering block produces the exciting force that along the circumferential direction changes, drive the vibrating machine system and produce vibration, maximum exciting force can be adjusted axle head major-minor centering block relative angle according to the load needs, and its vibration frequency can keep basicly stable in the running of setting back.
Common vibrator has advantages such as exciting force is adjustable before the start, volume is little, in light weight, simple in structure, working service is convenient, is applied so utilize in the engineering in much vibrating machines or vibration in recent years.
The centering block of common vibrator is consolidated on the exciter shaft; maximum exciting force is once setting; in running, be definite value; but it is in startup and stopping process; when vibration frequency approaches the intrinsic frequency of system; amplitude can increase sharply and produce resonance, not only makes system's loss of stability, and causes that easily vibrating machine comprises the damage of this body structure of vibrator.
Under many circumstances, the particularly super-huge vibrating machine of vibrating machine needs system can pass through resonance point smoothly in the start and stop stage, the vibration that needs system to produce in the course of the work, some irregular performance with wide power spectrum curve or movement locus, finish some special job contents,, card sieve low excessively, harden as the screening percentage of vibrating scalper; The not refinement of vibrating mill powder, easily reunion, the anti-pulverizing; The improper motion of material bonding, arch camber, delay in the bulkhead vibration work of various feed bins, hopper, chute; The mixture homogeneity that some various materials is mixed in the vibration batch mixer is not high, mixing efficiency is crossed problems such as low, and common vibrator almost is helpless for the solution of these problems.
Summary of the invention
The utility model provides a kind of secondary movable pendulum Chaotic Vibration Exciter, purpose is for solving the problems of the technologies described above effectively, the utility model can make system the startup stage start with less exciting force, reduce the staring torque of vibrator greatly, improve rapidity and reliability that vibrating machine starts; The shutdown stage is with the resonance region of very little exciting force by its system, thereby prevents the generation of resonating, and reaches the purpose that energy consumption is low, the life-span is long, so particularly suitable for the vibrating machine of frequent starting.
The utility model is that the eccentric centering block with the vibrator axle head is divided into fixed pendulum and movable pendulum, and the fixed pendulum shape is fan-shaped often, and the movable pendulum shape can be and fan-shapedly also can be made into other shapes according to needs; Movable pendulum is divided into one-level movable pendulum, secondary movable pendulum again, and fixed pendulum is fixed on the exciter shaft, and one-level movable pendulum kink is on the exciter shaft or be contained on the fixed pendulum axle, the secondary movable pendulum then kink on one-level movable pendulum axle.Two movable pendulums are freely with respect to the position of fixed pendulum not only in running, and the relative position between two movable pendulums also is freely, the fixed pendulum, one-level movable pendulum, the secondary movable pendulum that are the utility model one end have 3 frees degree altogether, and hence one can see that, and the utility model is at least 3DOF mechanism.
The kinetic characteristic and the probabilistic factor of motion that influence two movable pendulums are a lot, the input that makes mechanism have motion is determined and is exported uncertain chaotic motion, the characteristics of chaotic motion are exactly some the irregular performance with wide power spectrum curve and movement locus, and the present invention utilizes these characteristics chaotic motion to be applied to have the vibrating machine system of some special operation demands.
Because the effect of movable pendulum; the instantaneous synthetic total inertia force of each centering block of vibrator can be changed in running; particularly in startup, stopping process; very little or approach zero in view of making its total inertia force due to the structure of the present utility model; thereby make the vibrator can be, and then avoid the resonance in system's start and stop stage with very little or approach under zero the exciting force situation by resonance region.
The utility model takes following technical scheme to realize:
The utility model secondary movable pendulum Chaotic Vibration Exciter comprises vibrator holder assembly and secondary movable pendulum assembly.The vibrator holder assembly comprises vibrator seat, end cap and exciter shaft, and exciter shaft is contained on the vibrator seat, and end cap is equipped with at vibrator seat two ends.
Secondary movable pendulum assembly is symmetrical distribution at two ends, the exciter shaft left and right sides, and secondary movable pendulum assembly comprises fixed pendulum, one-level movable pendulum, secondary movable pendulum, secondary balance staff, bearing one and bearing two.Secondary movable pendulum assembly is installed on the exciter shaft axle head, and fixed pendulum is consolidated in exciter shaft by flat key; Between one-level movable pendulum and the fixed pendulum axle sleeve is housed, the one-level movable pendulum is hinged by bearing one and exciter shaft, and the secondary balance staff is equipped with in one-level movable pendulum bottom; The secondary movable pendulum is hinged by bearing two and secondary balance staff.
The mass ratio of described fixed pendulum, one-level movable pendulum, secondary movable pendulum is 5: 3.5: 1.5, also can be the mass ratio of other ratios, answers that viewing system needs, structure allows, combined factors such as the running of safeguards system and efficient consider.
Be consolidated with the centering block cover respectively at vibrator seat two ends, it all covers left and right sides secondary movable pendulum assembly respectively, the safety during with the assurance running, and the radial dimension of centering block cover should be decided according to the range of movement size of all centering blocks.
Because the structure of left and right sides secondary movable pendulum assembly is for being symmetrically distributed, so getting final product only to the statement of left centering block assembly; Still because symmetry, during motion about the movable pendulum assembly realize easily that synchronously idol has nonsynchronous in short-term situation, then the axial moment of couple of Chan Shenging is fully in system's tolerance range, so do not add explanation in addition.
The structural principle of secondary movable pendulum assembly is described as follows:
Secondary movable pendulum assembly is installed on the exciter shaft axle head, and fixed pendulum is consolidated in exciter shaft by flat key; Between one-level movable pendulum and the fixed pendulum axle sleeve is housed, it is hinged by bearing and exciter shaft, and the secondary balance staff is equipped with in its underpart; The secondary movable pendulum is hinged by bearing and secondary balance staff.
When the utility model starts running, because the free degree of I and II movable pendulum is unrestricted, and the effect of fixed pendulum and positioner, make staring torque reduce, improve the rapidity that starts; During normal operation, its relative position and motion conditions complexity; The fixed pendulum rotating speed slows down during shutdown, the one-level movable pendulum is because inertia can move to the position that is limited by positioner along the ω direction, this moment one-level movable pendulum and fixed pendulum eccentric basic neutralisation, no matter the secondary movable pendulum is in any angle, all make vibrator with the resonance region of very little exciting force by its system, thereby prevent the generation of resonating; Be provided with many locating holes on fixed pendulum, alignment pin is inserted in the different locating holes, and the angle when regulating movable pendulum and fixed pendulum start and stop reaches the purpose of regulating the start and stop exciting force; As the present invention during by-ω running, can adopt the dowel hole on fixed pendulum right side, load onto alignment pin and can reach above-mentioned identical effect.
As the above analysis, the utility model free degree is at least 3, and the free degree is many more, and the motion of system is complicated more.When exciter shaft drives the fixed pendulum rotation, because the variation of system load, mains fluctuations, the system speed fluctuation, the influence of factors such as acceleration fluctuation, the one-level movable pendulum, the secondary movable pendulum can relatively rotate with fixed pendulum under situation complicated and changeable, each centering block centroid position and motion are changed and produce chaotic motion, system shakes frequently, amplitude, exciting force, bigger variation will take place in performance parameters such as oscillation intensity, to realize some irregular performance of wide power spectrum or movement locus, as realizing transient state or the large amplitude on certain short time interval, big exciting force, special inertia properties such as big oscillation intensity.
In addition, the factors such as rule of transient speed, speed and the acceleration fluctuation of the eccentric throw of parameter maximums such as amplitude, exciting force, oscillation intensity, action time and centering block barycenter at different levels, centering block quality, vibrator are relevant, consequent vibration has several characteristics of multifrequency, be that synchronization has a plurality of frequencies and amplitude to act on system, be equivalent to the resultant vibration of a plurality of frequencies and amplitude.
The realization of the above-mentioned performance of the utility model secondary movable pendulum Chaotic Vibration Exciter, some the work resistance barrier for overcoming vibrating machine solves some key technology of vibrating machine or the bottleneck problem of restriction development, as low excessively, the card sieve of screening percentage of vibrating scalper; The not refinement of vibrating mill micro mist, easily reunion; The mixture homogeneity that some various materials is mixed in the vibration batch mixer is not high, mixing efficiency is low excessively; The problems such as improper motion of material bonding, arch camber, delay have tangible engineering effort and significance of application in the bulkhead vibration work of various feed bins, hopper, chute.
The utility model can make system the startup stage start with less exciting force, reduce the staring torque of vibrator greatly, improve rapidity and reliability that vibrating machine starts; The shutdown stage is with the resonance region of very little exciting force by its system, thereby prevents the generation of resonating, and reaches the purpose that energy consumption is low, the life-span is long, so particularly suitable for the vibrating machine of frequent starting.
Description of drawings
Fig. 1 is a structural representation front view of the present utility model.
Fig. 2 is that the utility model removes the K of left centering block cover to the structure for amplifying diagrammatic side view.
Mark among the figure: 1, vibrator seat, 2, end cap, 3, fixed pendulum, 4, flat key, 5, bearing one, 6, exciter shaft, 7, the centering block cover, 8, the secondary movable pendulum, 9, bearing two, 10, secondary movable pendulum axle, 11, the one-level movable pendulum, 12, axle sleeve, 13, dowel hole one, 14, dowel hole two, 15, dowel hole three, 16, dowel hole four, 17, alignment pin one, 18, alignment pin two, 19, alignment pin three, 20, alignment pin four.
The specific embodiment
With reference to accompanying drawing 1, the utility model mainly comprises vibrator holder assembly and secondary movable pendulum assembly.The vibrator holder assembly comprises vibrator seat 1, end cap 2, exciter shaft 6 etc.Exciter shaft 6 is contained on the vibrator seat 1, and end cap 2 is equipped with at vibrator seat 1 two ends.
Secondary movable pendulum assembly is symmetrical distribution at vibrator seat 1 left and right two ends, comprises that flat key 4, bearing 5, centering block cover 7, secondary movable pendulum 8, bearing 1, secondary movable pendulum axle 10, one-level movable pendulum 11, axle sleeve 12 and fixed pendulum 3 are provided with dowel hole 1, dowel hole 2 14, dowel hole 3 15, dowel hole 4 16, structures such as alignment pin 1, alignment pin 2 18, alignment pin 3 19, alignment pin 4 20 are housed.
Be consolidated with centering block cover 7 respectively at vibrator seat 1 two ends, it all covers left and right sides secondary movable pendulum assembly respectively, the safety during with the assurance running.
As shown in Figure 1, because the structure of left and right sides secondary movable pendulum assembly is for being symmetrically distributed, so only left centering block assembly is stated it in the specific embodiment; Still because symmetry, during motion about the movable pendulum assembly realize easily that synchronously idol has nonsynchronous in short-term situation, then the axial moment of couple of Chan Shenging is fully in system's tolerance range.
The structural principle of secondary movable pendulum assembly is that example is illustrated with the second from left level movable pendulum assembly:
In the accompanying drawing 1, secondary movable pendulum assembly is installed on exciter shaft 6 left end portion, and fixed pendulum 3 is consolidated in exciter shaft 6 by flat key 4; Between one-level movable pendulum 11 and the fixed pendulum 3 axle sleeve 12 is housed, one-level movable pendulum 11 is hinged by bearing 1 and exciter shaft 6, and secondary balance staff 10 is equipped with in its underpart; Secondary movable pendulum 8 is hinged by bearing 29 and secondary balance staff 10.
By accompanying drawing 2 as can be known, when the utility model starts running by counterclockwise angular velocity omega, because the free degree of I and II movable pendulum 11,8 is unrestricted, and the effect of fixed pendulum 3 and alignment pin 3 19 or alignment pin 4 20, can make staring torque reduce, improve the rapidity that starts; Fixed pendulum 3 rotating speeds slow down during shutdown, one-level movable pendulum 11 is because inertia is moved to the position (position shown in double dot dash line in the accompanying drawing 2) that is limited by alignment pin 1 or alignment pin 2 18 along the ω direction, this moment one-level movable pendulum 11 with the eccentric basic neutralisation of fixed pendulum 3, this moment, no matter secondary movable pendulum 8 was in any position (position shown in double dot dash line in the accompanying drawing 2), all make vibrator with the resonance region of very little exciting force by its system, thereby prevent the generation of resonating, simultaneously on fixed pendulum 3, can be provided with many locating holes, alignment pin can be inserted in the different locating holes, to regulate the angle of movable pendulum and fixed pendulum, reach the purpose of regulating exciting force of exciter; The present invention can adopt dowel hole 1, dowel hole 2 14, dowel hole 3 15, the dowel hole 4 16 on fixed pendulum 3 right sides when pressing the running of angular speed-ω, load onto corresponding alignment pin and can reach above-mentioned identical effect.
Be consolidated with centering block cover 7 respectively at vibrator seat 1 two ends, secondary movable pendulum assembly is covered in the centering block cover 7, the radial dimension of centering block cover 7 should be decided according to the range of movement size of all centering blocks.
As the above analysis, the utility model mechanism freedom is at least 3, and the free degree is many more, and the motion of system is just complicated more; When input motive power drives fixed pendulum 3 rotations by exciter shaft 6, because the variation of system load, mains fluctuations, the influence of factors such as system speed fluctuation, one-level movable pendulum 11, secondary movable pendulum 8 can relatively rotate with fixed pendulum 3 under situation complicated and changeable, each centering block centroid position and motion are changed and produce chaotic motion, total inertia force that can cause system, exciting force, bigger variation takes place in amplitude and oscillation intensity, can realize power spectrum or some irregular performance of movement locus of broad, as realize transient state or the large amplitude on certain short time interval, big exciting force, special inertia properties such as big oscillation intensity, the realization of these special inertia properties main feature of the present invention just can be to its size by control device, control effectively action time.
The utility model can be used for the bulkhead vibration of various feed bins, hopper, chute in the vibrating machine, to prevent material bonding, arch camber, delay, impels the material proper motion; Can be used for linear vibrating screen, probability screen, revolve the sieve that shakes, various vibrating machines such as oscillating feeder, vibratory feed unit, jigging conveyer, vibrator, vibrating head grinding machine, planetary ball mill make exciting source and drive source, make system produce the power spectrum of broad, realize the demand of special inertia properties such as system motion some irregular performance of track such as large amplitude, big exciting force, big oscillation intensity, more effectively finish the various special operation contents and the job requirements of system.
The utility model also is used for general vibrating machine, make system the startup stage start with less exciting force, to reduce the staring torque of vibrator, improve rapidity and reliability that vibrating machine starts; The shutdown stage is with the resonance region of very little exciting force by its system, thereby prevents the generation of resonating, and reaches the purpose that energy consumption is low, the life-span is long, is particularly useful for the vibrating machine of frequent starting.
Claims (3)
1. a secondary movable pendulum Chaotic Vibration Exciter is characterized in that comprising vibrator holder assembly and secondary movable pendulum assembly; The vibrator holder assembly comprises vibrator seat, end cap and exciter shaft, and exciter shaft is contained on the vibrator seat, and end cap is equipped with at vibrator seat two ends;
Secondary movable pendulum assembly is symmetrical distribution at the left and right two ends of exciter shaft, secondary movable pendulum assembly comprises fixed pendulum, one-level movable pendulum, secondary movable pendulum, secondary balance staff, bearing one and bearing two, secondary movable pendulum assembly is installed on the exciter shaft axle head, and fixed pendulum is consolidated in exciter shaft by flat key; Between one-level movable pendulum and the fixed pendulum axle sleeve is housed, the one-level movable pendulum is hinged by bearing one and exciter shaft, and the secondary balance staff is equipped with in one-level movable pendulum bottom; The secondary movable pendulum is hinged by bearing two and secondary balance staff.
2. secondary movable pendulum Chaotic Vibration Exciter according to claim 1 is characterized in that being consolidated with the centering block cover respectively at vibrator seat two ends.
3. secondary movable pendulum Chaotic Vibration Exciter according to claim 1 is characterized in that the mass ratio of described fixed pendulum, one-level movable pendulum, secondary movable pendulum was generally 5: 3.5: 1.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205569336U CN201799391U (en) | 2010-10-08 | 2010-10-08 | Chaotic vibration exciter with secondary pendulum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205569336U CN201799391U (en) | 2010-10-08 | 2010-10-08 | Chaotic vibration exciter with secondary pendulum |
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| Publication Number | Publication Date |
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| CN201799391U true CN201799391U (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010205569336U Expired - Fee Related CN201799391U (en) | 2010-10-08 | 2010-10-08 | Chaotic vibration exciter with secondary pendulum |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101972740A (en) * | 2010-10-08 | 2011-02-16 | 南京工程学院 | Two-stage moving-pendulum chaos exciter |
| CN105628357A (en) * | 2015-12-22 | 2016-06-01 | 浙江海洋学院 | Tail shaft detection experiment device with counterweight plate |
| CN114001135A (en) * | 2021-11-30 | 2022-02-01 | 洛阳峰驰三维技术有限公司 | Mechanism for synthesizing multiple circular vibrations into swing |
-
2010
- 2010-10-08 CN CN2010205569336U patent/CN201799391U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101972740A (en) * | 2010-10-08 | 2011-02-16 | 南京工程学院 | Two-stage moving-pendulum chaos exciter |
| CN105628357A (en) * | 2015-12-22 | 2016-06-01 | 浙江海洋学院 | Tail shaft detection experiment device with counterweight plate |
| CN114001135A (en) * | 2021-11-30 | 2022-02-01 | 洛阳峰驰三维技术有限公司 | Mechanism for synthesizing multiple circular vibrations into swing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20111008 |