CN104500644A - Multifunctional pendulum-type vibration absorbing device - Google Patents
Multifunctional pendulum-type vibration absorbing device Download PDFInfo
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- CN104500644A CN104500644A CN201410744610.2A CN201410744610A CN104500644A CN 104500644 A CN104500644 A CN 104500644A CN 201410744610 A CN201410744610 A CN 201410744610A CN 104500644 A CN104500644 A CN 104500644A
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- swing arm
- guide rail
- arm guide
- slide block
- bump leveller
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/28—Counterweights, i.e. additional weights counterbalancing inertia forces induced by the reciprocating movement of masses in the system, e.g. of pistons attached to an engine crankshaft; Attaching or mounting same
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention relates to a multifunctional pendulum-type vibration absorbing device. The multifunctional pendulum-type vibration absorbing device comprises a pair of swing arm mechanisms and a mounting base, wherein each swing arm mechanism comprises a swing arm guide rail and a balance weight mechanism; the balance weight mechanisms can move on the swing arm guide rails; one end of each of the pair of swing arm guide rails is connected with a rotating shaft by virtue of a bearing; the pair of swing arm guide rails are in a symmetrical state relative to the rotating shafts; the two ends of the rotating shafts are fixed on the mounting base by virtue of a support base; when the multifunctional pendulum-type vibration absorbing device is used, the pendulum-type vibration absorbing device is mounted on a vibration reduction target by virtue of the mounting base, so that the vibration or fluttering of the vibration reduction target is converted into swinging of the pair of swing arm guide rails. The multifunctional pendulum-type vibration absorbing device has multiple function modes including a passive vibration absorption mode, an active vibration absorption mode, a self-tuning vibration absorption mode and a self-adaptive active resonance vibration absorption mode, and different functional modes can be chosen according to different application occasions.
Description
Technical field
The invention belongs to vibration control technology field, be specifically related to a kind of bump leveller.
Technical background
Along with the fast development of modern science and technology, vibration control technology plays the effect become more and more important in engineering field.The on the one hand mechanization of various production and processing instrument and maximization, the vibratory response of generation is more and more outstanding, micro-vibration of the vibration of such as steam turbine, the flutter of aircraft, astrovehicle, the waving of power transmission line, bridge pneumatic etc.These alternating stresses vibrating the structural elements inside generation caused are the main causes causing structure fatigue damage, and the people of long-term work in vibration noise environment can feel pain, discomfort, and working efficiency reduces, and even jeopardizes their healthy.On the other hand in the hard-core technology fields such as precision machining, measurement and detection, people are also more and more harsher to the requirement of vibration environment, in particularly modern high-accuracy radar electric equipment, the microvibration of external environment will reduce detectyion range and the precision of radar greatly, have a strong impact on operational performance.
Absorbing technology is as one of main vibration control technology, have and the features such as simple, easy to use are installed, do not need to change original structure, be subject to the favor of people for a long time, be widely applied in Practical Project, and developed passive type bump leveller, active bump leveller, self adaption active vibration absorber gradually.Traditional passive type bump leveller, parameters is relatively-stationary, and when the frequency of external excitation changes, the effectiveness in vibration suppression of bump leveller can be deteriorated rapidly because of off resonance.Active vibration absorber introduces actuator on the basis of passive type bump leveller, regulate the ouput force of actuator and bump leveller to the reaction of main system in real time according to the feedback signal of main system, make the reaction force of bump leveller equal with the acceleration frequency of main system, phase place is contrary.This kind of bump leveller controllability is high, good damping result, but the defects such as power consumption is large, the easy unstability of system significantly limit its application in engineering.Self-tuning formula bump leveller is the natural frequency by regulating self, makes it go to follow the tracks of the vibration frequency of main system, gives full play to its vibration absorption ability, and then suppress the vibration of main system.This bump leveller to some extent solves the shortcomings such as passive type bump leveller absorbing frequency band is narrow, effectiveness in vibration suppression is poor, have again relative to active bump leveller the advantage that power consumption is little, stability is high simultaneously, but its effectiveness in vibration suppression is comparatively large by damping effect, therefore should reduce the damping of self-tuning formula bump leveller when designing as far as possible.In order to reduce the impact of damping on effectiveness in vibration suppression further, improve the performance of self-tuning formula bump leveller, active force is incorporated in self-tuning formula bump leveller, be exactly a kind of self adaption active resonance bump leveller like this, this bump leveller will improve the effectiveness in vibration suppression of bump leveller greatly due to the advantage combining active bump leveller and self-tuning formula bump leveller.Usually once after bump leveller design typification, its applying working condition also basic settings.If Environmental Conditions changes, or the demand of effectiveness in vibration suppression and energy ezpenditure is changed, then need to redesign and change bump leveller.
Summary of the invention
The present invention is directed to the application needs of bump leveller in difference vibration operating mode, design the arm-type bump leveller of a kind of Multifunctional rocking.There is passive type absorbing pattern, self-tuning formula absorbing pattern, initiatively absorbing pattern and self adaption active resonance absorbing pattern 4 kinds of functional modes simultaneously, can need to adjust according to the application of reality.
A kind of multi-functional pendulum-type bump leveller comprises a pair oscillating arm mechanisms and mounting base 1; Every oscillating arm mechanisms comprises swing arm guide rail 2 and balance weight mechanism, and balance weight mechanism can move on swing arm guide rail 2; One end of a pair swing arm guide rail 2 is connected to turning axle 4 respectively by bearing 3, and relative to turning axle 4 symmetrically state; Turning axle 4 is provided with plural torsion spring 5, and the two ends of turning axle 4 are fixed on mounting base 1 by bearing 6; During use, by mounting base 1, described pendulum-type bump leveller is installed on vibration damping object, makes the vibration of vibration damping object be converted into the swing of a pair swing arm guide rail 2.
A kind of optimized project is: every bar swing arm guide rail 2 is provided with tooth bar 7 along its length; Described balance weight mechanism comprises the gear 8, stepper motor 9, top slide block 10 and the lower weight slide block 11 that coordinate with tooth bar 7, and described gear 8 is located on the output shaft of stepper motor 9, and described gear 8 and tooth bar 7 coordinate formation rolling bearing; Described top slide block 10 is hollow object, and across on swing arm guide rail 2, and be slidably matched with the swing arm guide rail 2 of tooth bar 7 both sides, described stepper motor 9 is fixed in top slide block 10; The lower weight slide block 11 corresponding with top slide block 10 is positioned at the bottom of swing arm guide rail 2, and the two ends of lower weight slide block 11 are connected respectively the two ends of top slide block 10.
On the basis of optimized project: the end face of described swing arm guide rail 2 is provided with dovetail groove 13 along its length, described tooth bar 7 is positioned at the end face of described dovetail groove 13; The bottom of described top slide block 10 coordinates with the dovetail groove 13 of swing arm guide rail 2.
On the basis of optimized project: described stepper motor 9 is the stepper motor with brake function, balance weight mechanism can be kept fixing on swing arm guide rail 2 in the situation of abnormal power-down; The output terminal of stepper motor 9 is connected to gear 8 by coupling 14.
On the basis of optimized project: described top slide block 10 is hollow semi-cylindrical, and the two ends of axis are discoid respectively to extending to form; Described lower weight slide block 11 is semi-cylindrical, and the be connected two ends of top slide block 10, the two ends of lower weight slide block 11 are formed cylindric.
Another situation about optimizing is: be often respectively arranged with an active force actuator 12 between bar swing arm guide rail 2 and mounting base 1, active force actuator 12 one end is flexibly connected with mounting base 1, and the other end is flexibly connected with swing arm guide rail 2.
Advantageous Effects of the present invention is embodied in following several aspect:
The present invention is a multi-functional pendulum-type bump leveller, there is passive type absorbing pattern, active absorbing pattern, self-tuning absorbing pattern and self adaption active resonance absorbing pattern several functions pattern simultaneously, different functional modes can be selected according to different applications;
The present invention introduces pendulum-type structure in bump leveller design, can be reduced the damping of self-tuning bump leveller by oscillating arm mechanisms, improves the effectiveness in vibration suppression of self-tuning bump leveller;
In the present invention, slide block can at swing arm moving on rails, just can to regulate the natural frequency of bump leveller to the distance of rotating shaft by changing slide block, and the natural frequency of bump leveller can the frequency disturbed outward of real-time tracking, achieves the automatic tuning capabilities of bump leveller, improves the effectiveness in vibration suppression of bump leveller;
The present invention introduces active force actuator in the design of bump leveller, can needing to regulate the damping of bump leveller and bump leveller to vibration damping object reaction force according to controlling, reaching best to make the damping property of bump leveller.
When the mode of operation of bump leveller elects self-tuning formula absorbing pattern and self adaption active resonance absorbing pattern as in the present invention, have the advantages that power consumption is low, effectiveness in vibration suppression is high.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention under the first mode of execution.
Fig. 2 is slide block and swing arm guide rail connection diagram.
Fig. 3 is rotating shaft and swing arm connection diagram.
Fig. 4 is structural representation of the present invention under the second mode of execution.
Sequence number in upper figure: 1. mounting base, 2. swing arm guide rail, 3. bearing, 4. turning axle, 5. torsion spring, 6. bearing, 7. tooth bar, 8. gear, 9. stepper motor, 10. top slide block, 11. times weight slide block, 12. active force actuator, 13. dovetail grooves, 14 coupling, 15, arch spring.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, the present invention is further described.
Embodiment 1
See Fig. 1, a kind of multi-functional pendulum-type bump leveller comprises a pair oscillating arm mechanisms and mounting base 1; Every oscillating arm mechanisms comprises swing arm guide rail 2 and balance weight mechanism, and balance weight mechanism can move on swing arm guide rail 2.Every swing arm guide rail 2 be flexibly connected an active force actuator 12 between mounting base 1 respectively.
See Fig. 2, the end face of every bar swing arm guide rail 2 is provided with dovetail groove 13 along its length, the end face of dovetail groove 13 is provided with tooth bar 7 along its length; Balance weight mechanism comprises the gear 8, stepper motor 9, top slide block 10 and the lower weight slide block 11 that coordinate with tooth bar 7, and gear 8 is arranged on the output shaft of stepper motor 9 by coupling 14, and gear 8 and tooth bar 7 coordinate formation rolling bearing.Top slide block 10 is hollow semi-cylindrical, and the two ends of axis are discoid respectively to extending to form; Top slide block 10 across on swing arm guide rail 2, and is slidably matched with the swing arm guide rail 2 of tooth bar 7 both sides, and stepper motor 9 is fixedly installed in top slide block 10; Lower weight slide block 11 corresponding to top slide block 10 is positioned at the bottom of swing arm guide rail 2, and lower weight slide block 11 is semi-cylindrical, and the be connected two ends of top slide block 10, the two ends of lower weight slide block 11 are formed cylindric.
See Fig. 3, one end of a pair swing arm guide rail 2 is connected to turning axle 4 respectively by rolling bearing 3, and relative to turning axle 4 symmetrically state; Turning axle 4 is provided with four torsion springs 5, the two ends of turning axle 4 are fixed on mounting base 1 respectively by bearing 6.
Stepper motor 9 is the stepper motor with brake function, the balance weight mechanism of multi-functional pendulum-type bump leveller can be kept fixing on swing arm guide rail 2 in the situation of abnormal power-down, the change of relative position can not occur.
During use, by mounting base 1, described pendulum-type bump leveller is installed on vibration damping object, makes the vibration of vibration damping object or flutter be converted into the swing of a pair swing arm guide rail 2.
Working principle of the present invention is described as follows:
When single by the vibration vibration frequency of vibration damping object, and when immobilizing, the rotating machinery etc. of such as some fixed rotating speed, when the mode of operation of bump leveller is chosen as passive type absorbing pattern.Now active force actuator and stepper motor are in off-position, slide block will be on fixing position, the natural frequency of bump leveller remains unchanged, and it is equal with by the frequency of vibration damping object, now this multi-functional pendulum-type bump leveller does not need to consume any energy, is equivalent to a passive passive type bump leveller.
When indefinite by the vibration frequency of vibration damping object, there is multi-frequency characteristic, and when Environmental Conditions does not have a rigors to energy ezpenditure, the such as mair motor etc. of some ground electric substation, the mode of operation of bump leveller is chosen as initiatively absorbing pattern.Now active force actuator work, stepper motor is in off-position, and slide block will be on the CF center frequency position of a setting, and the natural frequency of bump leveller remains unchanged.The vibration amplitude characteristic Real Time Drive actuator fed back according to vibration damping object is directly applied active force to vibration damping object being offset the outer perturbed force be subject to by vibration damping object by bump leveller, and then reduces by the vibration of vibration damping object.Because actuator directly applies reaction force to main system, therefore need to consume certain energy.Now this multi-functional pendulum-type bump leveller is equivalent to an active active vibration absorber.
When indefinite by the vibration frequency of vibration damping object, can intermittence change, and when Environmental Conditions is very harsh to the requirement of energy ezpenditure, the mair motor of such as some naval vessels, along with the change of forward velocity in navigation, the vibration frequency of mair motor will follow change, and the mode of operation of bump leveller is chosen as self-tuning absorbing pattern.Now stepper motor work, active force actuator is in off-position.The vibration frequency characteristic fed back according to vibration damping object is carried out Driving Stepping Motor adjusting slider at swing arm moving on rails by bump leveller, makes the natural frequency of bump leveller go to follow the tracks of the outer perturbed force frequency of vibration damping object, and then improves the effectiveness in vibration suppression of bump leveller.Due to only stepper motor work under this pattern, and if only if just need to carry out tuning when the frequency of outer interference changes, so the energy of consumption is very little.Now this multi-functional pendulum-type bump leveller this be equivalent to the passive tuner-type bump leveller of a standard.
When indefinite by the vibration frequency of vibration damping object, can intermittence change, and Environmental Conditions requires harsher to energy ezpenditure, when requiring higher to effectiveness in vibration suppression again simultaneously, such as, rotating machinery on some airborne sophisticated electronics.The mode of operation of bump leveller is chosen as self adaption active resonance absorbing pattern, and now stepper motor and active force actuator all work.On the one hand, the vibration frequency characteristic fed back according to vibration damping object is carried out Driving Stepping Motor adjusting slider at swing arm moving on rails by bump leveller, makes the natural frequency of bump leveller go to follow the tracks of the outer perturbed force frequency of vibration damping object; On the other hand, the vibration amplitude characteristic Real Time Drive active force actuator fed back according to vibration damping object is applied an active force contrary with bump leveller damping force equal and opposite in direction, direction by bump leveller, is improved the effectiveness in vibration suppression of bump leveller by the damping reducing bump leveller equivalently.Due under this pattern, active force actuator only needs to export and the sizable active force of damping force, and the energy of consumption is far smaller than initiatively absorbing pattern, and now this multi-functional pendulum-type bump leveller is equivalent to a self adaption active resonance bump leveller.
Embodiment 2:
See Fig. 4, and the main distinction of embodiment 1 is: between horizontal swinging arm and pedestal, add an arch flat spring respectively.The upper end of arch flat spring is fixedly connected on swing arm guide rail, and lower end is fixedly connected on pedestal, the other the same as in Example 2.The main rigidity increasing bump leveller elastic element on the basis of embodiment 2, improves the CF center frequency of bump leveller, is mainly used in the occasion that damping frequency is higher.
Claims (7)
1. a multi-functional pendulum-type bump leveller, is characterized in that: comprise a pair oscillating arm mechanisms and mounting base (1); Every oscillating arm mechanisms comprises swing arm guide rail (2) and balance weight mechanism, and balance weight mechanism can be upper mobile at swing arm guide rail (2); One end of a pair swing arm guide rail (2) is connected to turning axle (4) respectively by bearing (3), and relative to turning axle (4) symmetrically state; Turning axle (4) is provided with plural torsion spring (5), and the two ends of turning axle (4) are fixed on mounting base (1) by bearing (6); During use, by mounting base (1), described pendulum-type bump leveller is installed on vibration damping object, makes the vibration of vibration damping object be converted into the swing of a pair swing arm guide rail (2).
2. the multi-functional pendulum-type bump leveller of one according to claim 1, is characterized in that: every bar swing arm guide rail (2) is provided with tooth bar (7) along its length; Described balance weight mechanism comprises the gear (8), stepper motor (9), top slide block (10) and the lower weight slide block (11) that coordinate with tooth bar (7), described gear (8) is located on the output shaft of stepper motor (9), and described gear (8) and tooth bar (7) coordinate formation rolling bearing; Described top slide block (10) is hollow object, and across on swing arm guide rail (2), and be slidably matched with the swing arm guide rail (2) of tooth bar (7) both sides, described stepper motor (9) is fixed in top slide block (10); The lower weight slide block (11) corresponding with top slide block (10) is positioned at the bottom of swing arm guide rail (2), and the two ends of lower weight slide block (11) are connected respectively the two ends of top slide block (10).
3. the multi-functional pendulum-type bump leveller of one according to claim 1, it is characterized in that: be often respectively arranged with an active force actuator (12) between bar swing arm guide rail (2) and mounting base (1), active force actuator (12) one end is flexibly connected with mounting base (1), and the other end is flexibly connected with swing arm guide rail (2).
4. the multi-functional pendulum-type bump leveller of one according to claim 2, is characterized in that: the end face of described swing arm guide rail (2) is provided with dovetail groove (13) along its length, and described tooth bar (7) is positioned at the end face of described dovetail groove (13); The bottom of described top slide block (10) coordinates with the dovetail groove (13) of swing arm guide rail (2).
5. the multi-functional pendulum-type bump leveller of one according to claim 2, is characterized in that: described stepper motor (9) is the stepper motor with brake function, balance weight mechanism can be kept upper fixing at swing arm guide rail (2) in the situation of abnormal power-down; The output terminal of stepper motor (9) is connected to gear (8) by coupling (14).
6. the multi-functional pendulum-type bump leveller of one according to claim 2, is characterized in that: described top slide block (10) is hollow semi-cylindrical, and the two ends of axis are discoid respectively to extending to form; Described lower weight slide block (11) is semi-cylindrical, and the be connected two ends of top slide block (10), the two ends of lower weight slide block (11) are formed cylindric.
7. the multi-functional pendulum-type bump leveller of one according to claim 1, is characterized in that: one end of a pair swing arm guide rail (2) is connected to turning axle (4) respectively by bearing (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410744610.2A CN104500644B (en) | 2014-12-09 | 2014-12-09 | A kind of multi-functional pendulum-type bump leveller |
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| CN201410744610.2A CN104500644B (en) | 2014-12-09 | 2014-12-09 | A kind of multi-functional pendulum-type bump leveller |
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| CN104500644A true CN104500644A (en) | 2015-04-08 |
| CN104500644B CN104500644B (en) | 2016-06-22 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106271861A (en) * | 2016-10-25 | 2017-01-04 | 北京工业大学 | A kind of two-stage distributed assembly power bump leveller oscillation damping method controlled for thin-walled parts multi-modal time-varying cutting vibration |
| CN110486418A (en) * | 2019-07-19 | 2019-11-22 | 中国船舶重工集团公司第七一九研究所 | A kind of symmetrical cantilever rod-type dynamic vibration absorber |
| CN112389642A (en) * | 2020-10-30 | 2021-02-23 | 哈尔滨飞机工业集团有限责任公司 | Dynamic vibration absorber structure for helicopter vibration reduction |
| CN112669687A (en) * | 2020-12-01 | 2021-04-16 | 大连理工大学 | Method for manufacturing personalized in-vitro interlayer physical model |
| CN111555016B (en) * | 2020-05-12 | 2021-04-20 | 北京无线电测量研究所 | Airborne radar antenna damping device |
| CN113503334A (en) * | 2021-07-30 | 2021-10-15 | 上海三菱电梯有限公司 | Method for reducing vibration of guide rail |
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| CN111555016B (en) * | 2020-05-12 | 2021-04-20 | 北京无线电测量研究所 | Airborne radar antenna damping device |
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| CN112669687B (en) * | 2020-12-01 | 2022-06-21 | 大连理工大学 | Method for manufacturing personalized in-vitro interlayer physical model |
| CN113503334A (en) * | 2021-07-30 | 2021-10-15 | 上海三菱电梯有限公司 | Method for reducing vibration of guide rail |
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| CN104500644B (en) | 2016-06-22 |
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