CN205207526U - Half initiative bump leveller with adjustable broadband rigidity and damping - Google Patents
Half initiative bump leveller with adjustable broadband rigidity and damping Download PDFInfo
- Publication number
- CN205207526U CN205207526U CN201520906111.9U CN201520906111U CN205207526U CN 205207526 U CN205207526 U CN 205207526U CN 201520906111 U CN201520906111 U CN 201520906111U CN 205207526 U CN205207526 U CN 205207526U
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- coil
- mover
- bump leveller
- rigidity
- damping
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Abstract
The utility model provides a half initiative bump leveller with adjustable broadband rigidity and damping. Installing the axle of covering on with in the base respectively including both ends, wearing at epaxial active cell, the cover epaxial and lie in two springs between active cell and base and active cell and the upper cover respectively, arranges the coil on the active cell, the package the active cell outside just both ends respectively in base and cover connection's shell, coil in large quantities in 1, each coil is independently installed on the active cell, and two line terminals are all drawn forth to every coil. The utility model discloses can adjust the rigidity and the damping of bump leveller through regulating current size, can be through the change that how much realizes electromagnetism rigidity or electromagnetic damping of coil access under some emergency that the electric current can't change. The utility model discloses the frequency band of bump leveller has effectively been widened. The utility model discloses can go on in succession or in a big way regulation through simple mode, it is better, more effective to make the bump leveller shake the effect at certain frequency range systematic.
Description
Technical field
The utility model relates to a kind of dynamic vibration absorber.
Background technique
Along with the development of society, people are more and more higher for the requirement of vibration and noise reducing.Vibration control is an important branch in vibration engineering field, and its object is exactly make the level of vibration of controlled device be reduced to the expection requirement of people by certain measure.Absorbing is a kind of damping technology be widely used in engineering practice.So-called absorbing, the privileged site by shaking controlled master being exactly adds subtense angle and the bump leveller that has quality and rigidity, the kinetic parameter of this subtense angle of choose reasonable, structural type and with the main coupled relation being that shakes, to change the main vibrational state being that shakes, energy is redistributed, be about to the main vibrational energy transfer fastened of shaking on subtense angle, thus reduce or eliminate the main vibration being of shaking.
Passive dynamic vibration absorber is the mechanical structure that quality and stiffness parameters are fixed, and its natural frequency is unadjustable, thus can only control the vibration of single-frequency, and Applicable scope is very narrow.In order to carry out vibration control to the controlled device of variable parameter operation, occurred the semi active vibration absorber that a lot of natural frequency is adjustable, also referred to as self-tuning bump leveller, most of semi active vibration absorber changes its natural frequency by changing rigidity.The coil built-in semiactive vibration absorber with closed structure proposed in the patent document that the coil external type semiactive vibration absorber in enclosed structure proposed in the patent document that notification number is CN102410336B and publication number are CN103291828A is the electromagnetic type semi active vibration absorber of two frequency-adjustable, both differences are the difference of coil position, its principle is exactly by regulating field coil electric current to change ELECTROMAGNETIC STIFFNESS, and then reaches the object regulating bump leveller natural frequency.But above-mentioned electromagnetic type semi active vibration absorber exists following 2 deficiencies: the first, designed bump leveller damping is very little, and does not possess regulatory function, and controllable frequency band is too narrow in the specific implementation to make bump leveller, affects shock attenuation result.The second, in actual applications, bump leveller adjustable frequency scope is too little, usually only has several hertz.
Summary of the invention
The purpose of this utility model be to provide a kind of can the wide band rigidity of free adjusting natural frequency and damp adjustable semi active vibration absorber.
The purpose of this utility model is achieved in that comprising two ends is installed on base and the axle above covered respectively, be through the mover on axle, to be enclosed within axle and to lay respectively at mover and base and two springs between mover and upper cover, be arranged in the coil on mover, wrap in the shell that the outside and two ends of mover are connected with upper cover respectively at base, it is characterized in that: the quantity of described coil is 2-8 and is even number, and each coil is independently arranged on mover, and two line ends all drawn by each coil.
The utility model can also comprise:
1, the quantity of described coil is 4, and the number of turn of each coil is respectively 1,2,3,4.
2, the quantity of described coil is 4, and the number of turn of each coil is respectively 1,2,4,8.
3, described mover shape is dumbbell-like shape, the position of coil winding minor radius in the middle of mover.
4, the large radius at dumbbell-like shape mover two ends has mover tooth, and the inwall of shell is provided with the tooth corresponding with mover tooth position.
The utility model belongs to a kind of semi active vibration absorber, and the base designs of disc-shape tapped hole, in order to connect vibration source.Axle is positioned at bump leveller center, is connected by pretightening force with base.The shell of bump leveller is cylindrical, and indoor design has tooth, and corresponding with mover tooth position, shell is connected with base by screw.The mover of bump leveller, through axle, is connected by bearing with axle.Mover shape is dumbbell-like shape, and the two ends that radius is larger are designed with mover tooth, and coil winding is in the less position of mover middle radius.Two spring symmetries are placed in the groove of upper and lower two end faces of mover, and one end of spring props up mover, and the other end props up upper end cap and the base of bump leveller.The upper end cap of bump leveller is fixed by screw and shell.The top of upper end cap is provided with nut 8, in order to be connected and fixed axle and upper end cap.
Bump leveller of the present utility model is configured with multiple coil, is independently arranged on mover.Two line ends all drawn by each coil, coil both can be connected in energized circuit, can be connected in damping circuit again, be easy to the regulable control realizing bump leveller ELECTROMAGNETIC STIFFNESS and damping.
Advantageous Effects of the present utility model is embodied in the following aspects:
1, the bump leveller of the utility model design can by rigidity and the damping regulating size of current to regulate bump leveller, under some emergency case that electric current cannot change, the number that designed electromagnetic type semi active vibration absorber still can be accessed by coil realizes the change of ELECTROMAGNETIC STIFFNESS or electromagnetic damping.
2, the adjustable semi-active type bump leveller of rigidity of the utility model design, by regulating the rigidity size of bump leveller to regulate its natural frequency, has effectively widened the frequency band of bump leveller.
3, the damping of bump leveller of the present utility model can carry out continuously or in a big way by simple mode adjustment, makes bump leveller shock attenuation result in certain frequency range better, more effectively.
Accompanying drawing explanation
Fig. 1 is bump leveller coil lead layout plan of the present utility model.In Fig. 1, a, b, c, d, e, f, g, h are winding wire end interface.
Fig. 2 is bump leveller cut-away view.
Fig. 3 a is outer casing construction drawing, and Fig. 3 b is the plan view of Fig. 3 a.
The plan view of Fig. 4 a to be Structure of mover figure, Fig. 4 b be Fig. 4 a.
Fig. 5 is the number of turn of coil when being 1,2,3,4, the collocation table of ELECTROMAGNETIC STIFFNESS and damping.
Fig. 6 is the number of turn of coil when being 1,2,4,8, the collocation table of ELECTROMAGNETIC STIFFNESS and damping.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
The rigidity of mechanical spring is k
machine, ELECTROMAGNETIC STIFFNESS is k
electricity, vibration isolation frequency band is f
min~ f
max, absorbing quality is m
a.The global stiffness of bump leveller is k=k
electricity+ 2k
machine, the rigidity of mechanical spring is k
machine=Gd
4/ (8nD
3), the scope that ELECTROMAGNETIC STIFFNESS need meet is
the scope that mechanical spring need meet is
Composition graphs 2.Semi active vibration absorber comprises the base 1 of disc-shape, and the Center of base groove, is used for placing axle 3.Susceptor surface has hierarchic structure, in order to determine the relative position of base and shell 6.Base designs two weeks tapped holes, inner ring six tapped holes are in order to connected with outer casing, six, outer ring tapped hole is in order to connect vibration source.Axle is positioned at bump leveller center, is connected by pretightening force with the groove of base.The shell 6 of bump leveller is cylindrical drum, and indoor design has tooth, and corresponding with mover tooth position, shell side surface has an aperture, is used for drawing line end.Shell is connected with base by screw.The mover 5 of bump leveller, through axle, is connected by bearing with axle.Mover shape is dumbbell-like shape, and the two ends that radius is larger are designed with mover tooth, and coil 4 is wrapped in the less position of mover middle radius.The upper and lower surface of mover is designed with groove, and two spring 2 symmetries are placed in the groove of upper and lower two end faces of mover.One end of spring props up mover, and the other end props up upper end cap 7 and the base of bump leveller.The upper end cap 7 of bump leveller, in disc, is designed with ladder, is used for determining the relative position with shell, and upper end cap is fixed by screw and shell.The top of upper end cap is provided with nut 8, and nut is all connected with screw-thread fit with stator and upper end cap, in order to be connected and fixed axle and upper end cap.
When bump leveller is subject to excitation force, mover produces axial displacement, and the power that after spring stress distortion, generation one is contrary stops vibration.And the closed magnetic path that stator ring, stator yoke, air gap, mover gear ring and the mover yoke namely at bump leveller after electromagnetic coil energising is formed produces magnetic field, when mover generation axial displacement, gear ring creates the electromagnet pull attempting mover gear ring returning position is put under the influence of a magnetic field.Mechanical spring force and electromagnetic force acting in conjunction, produce shock attenuation result.
The rigidity of bump leveller and damping are adjustable.The adjustment of magnetic rigidity is by changing the coil number be connected in energized circuit, changes magnetic potential, thus changes the magnetic flux of mover, and then regulate magnetic rigidity, and the relation that the change of rigidity is directly proportional to coil turn.The adjustment of damping is number by the changing unloaded closing coil number of series winding (or in zero load), thus regulates the damping of bump leveller.Assuming that the unit of coil turn is 1, discuss in two kinds of situation below:
(1), when establishing the number of turn of coil 1,2,3,4 to be respectively 1,2,3,4, by regulating the line end be connected into, different ELECTROMAGNETIC STIFFNESS and the matched combined of damping can be obtained.Such as c=6, k
electricity=4 is that the line end interface of coil 1,2,3 is formed damping circuit from closed mutually, and coil 4 is accessed energized circuit; C=1, k
electricity=2 is that the line end interface of coil 1 is formed damping circuit from closed mutually, and by the line end interface of coil 2 access energized circuit, other coil interfaces do not connect.Concrete data are as shown in the table of Fig. 5, and √ represents and can be combined, and × expression not may be combined with.Having 61 groups can collocation mode, and data are comparatively continuous.
(2) when the number of turn of four coils is 1,2,4,8, by regulating the mode of line end of being connected into, the collocation of different ELECTROMAGNETIC STIFFNESS and damping can be obtained as shown in the table of figure 6, altogether can to 81 groups of collocation modes, and Data distribution8 is comparatively extensive.
The coil design of present embodiment is four, coil turn provides 1,2,3,4 and 1,2,4,8 two kind, only for referencial use.In the application of reality, the quantity of coil and the number of turn of coil all can be designed to different numbers according to different requirements, are more combined.
Claims (6)
1. a wide band rigidity and damp adjustable semi active vibration absorber, comprise two ends and be installed on base and the axle above covered respectively, be through the mover on axle, to be enclosed within axle and to lay respectively at mover and base and two springs between mover and upper cover, be arranged in the coil on mover, wrap in the shell that the outside and two ends of mover are connected with upper cover respectively at base, it is characterized in that: the quantity of described coil is greater than 1, each coil is independently arranged on mover, and two line ends all drawn by each coil.
2. wide band rigidity according to claim 1 and damp adjustable semi active vibration absorber, is characterized in that: for 2-8 and be even number.
3. wide band rigidity according to claim 2 and damp adjustable semi active vibration absorber, is characterized in that: the quantity of described coil is 4, and the number of turn of each coil is respectively 1,2,3,4.
4. wide band rigidity according to claim 2 and damp adjustable semi active vibration absorber, is characterized in that: the quantity of described coil is 4, and the number of turn of each coil is respectively 1,2,4,8.
5., according to the wide band rigidity of claim 1-4 described in any one and damp adjustable semi active vibration absorber, it is characterized in that: described mover shape is dumbbell-like shape, the position of coil winding minor radius in the middle of mover.
6. wide band rigidity according to claim 5 and damp adjustable semi active vibration absorber, is characterized in that: the large radius at dumbbell-like shape mover two ends has mover tooth, and the inwall of shell is provided with the tooth corresponding with mover tooth position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520906111.9U CN205207526U (en) | 2015-11-13 | 2015-11-13 | Half initiative bump leveller with adjustable broadband rigidity and damping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520906111.9U CN205207526U (en) | 2015-11-13 | 2015-11-13 | Half initiative bump leveller with adjustable broadband rigidity and damping |
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| Publication Number | Publication Date |
|---|---|
| CN205207526U true CN205207526U (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520906111.9U Expired - Fee Related CN205207526U (en) | 2015-11-13 | 2015-11-13 | Half initiative bump leveller with adjustable broadband rigidity and damping |
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|---|---|
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317912A (en) * | 2015-11-13 | 2016-02-10 | 哈尔滨工程大学 | Wideband semi-active vibration absorber with adjustable rigidity and damping |
| CN106286665A (en) * | 2016-10-08 | 2017-01-04 | 中国船舶重工集团公司第七〇九研究所 | Adjustable non-linear double-layer vibration isolating device |
| CN106286666A (en) * | 2016-10-08 | 2017-01-04 | 中国船舶重工集团公司第七〇九研究所 | Reluctance type electromagnetism active vibration absorber |
| CN106337893A (en) * | 2016-10-08 | 2017-01-18 | 中国船舶重工集团公司第七〇九研究所 | Magnetic resistance type electromagnetic active vibration isolator |
| CN109630582A (en) * | 2018-12-27 | 2019-04-16 | 上海大学 | A kind of electromagnetic spring of adjustable rigidity |
-
2015
- 2015-11-13 CN CN201520906111.9U patent/CN205207526U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317912A (en) * | 2015-11-13 | 2016-02-10 | 哈尔滨工程大学 | Wideband semi-active vibration absorber with adjustable rigidity and damping |
| CN106286665A (en) * | 2016-10-08 | 2017-01-04 | 中国船舶重工集团公司第七〇九研究所 | Adjustable non-linear double-layer vibration isolating device |
| CN106286666A (en) * | 2016-10-08 | 2017-01-04 | 中国船舶重工集团公司第七〇九研究所 | Reluctance type electromagnetism active vibration absorber |
| CN106337893A (en) * | 2016-10-08 | 2017-01-18 | 中国船舶重工集团公司第七〇九研究所 | Magnetic resistance type electromagnetic active vibration isolator |
| CN106286666B (en) * | 2016-10-08 | 2019-06-04 | 中国船舶重工集团公司第七一九研究所 | Reluctance type electromagnetism active vibration absorber |
| CN109630582A (en) * | 2018-12-27 | 2019-04-16 | 上海大学 | A kind of electromagnetic spring of adjustable rigidity |
| CN109630582B (en) * | 2018-12-27 | 2019-11-26 | 上海大学 | A kind of electromagnetic spring of adjustable rigidity |
| US10844927B2 (en) | 2018-12-27 | 2020-11-24 | Shanghai University | Stiffness-adjustable electromagnetic spring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160504 Termination date: 20181113 |