CN107588146A - A kind of string formula bump leveller of achievable variation rigidity - Google Patents
A kind of string formula bump leveller of achievable variation rigidity Download PDFInfo
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- CN107588146A CN107588146A CN201710971905.7A CN201710971905A CN107588146A CN 107588146 A CN107588146 A CN 107588146A CN 201710971905 A CN201710971905 A CN 201710971905A CN 107588146 A CN107588146 A CN 107588146A
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- string
- bump leveller
- guide rail
- variation rigidity
- axle
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Abstract
A kind of string formula bump leveller of achievable variation rigidity.It includes base, guide rail, rack, string frame, elastic string, mass, gear, axle, microcontroller, acceleration transducer and motor；Compared with prior art, the string formula bump leveller of achievable variation rigidity provided by the invention has the advantages that：Light weight, Whole frequency band vibration damping can be realized, carry out frequency-tracking without treating vibration insulating system, there is self-regulated rigidity ability, therefore the change of exciting force size can be adapted it to, therefore its robustness can be greatly improved.
Description
Technical field
The invention belongs to vibration absorber technical field, more particularly to a kind of string formula bump leveller of achievable variation rigidity.
Background technology
In aerospace field, the load that aircraft is born is more complicated, usually contains multiple frequency contents, and its
Change on a large scale be present in size；In addition, because the requirement of lighting, aircraft are also restricted to shock absorber quality.Pass
The passive type of system is linear/and often quality is larger and can only realize arrowband vibration damping for small nonlinearity shock absorber, select active vibration damping device
Then need extra energy supply device and controller, the quality of a larger increase original system, take excessive space and cost is higher.
By contrast, strong nonlinearity string formula bump leveller has the characteristics that lightweight and wideband absorbing, but the change of load can be different degrees of
Ground influences its vibration absorbing performance.Designed using half active variable stiffness, in the case where adding less device, bump leveller can be made fine
Ground adapts to the change of environmental load, obtains higher vibration absorbing performance.But still lack this kind of device at present.
The content of the invention
In order to solve the above problems, it is an object of the invention to provide a kind of string formula bump leveller of achievable variation rigidity.
In order to achieve the above object, the string formula bump leveller of achievable variation rigidity provided by the invention includes base, guide rail, tooth
Bar, string frame, elastic string, mass, gear, axle, microcontroller, acceleration transducer and motor；Wherein, base is tabular, with
Dismountable mode is fixed in system to be damped；The section of guide rail is in inverted trapezoidal, is arranged on the surface of base；Rack is with leading
The parallel mode of rail is arranged on the surface of base；String frame is thin wall hollow body structure, and lower end middle part is formed with one and guide rail
The inverted trapezoidal groove being slidably matched, two string frame spacing distances are arranged on guide rail, and on side relative on two string framves
Portion is respectively formed with a perforate, and through an axle perpendicular with rail length direction is provided with, one end of every axle is consolidated for bottom
It is scheduled in the centre bore of a gear, and two gears are meshed with rack simultaneously；Every axle passes through shaft coupling and motor
Output shaft is connected, and motor is arranged on the inside of string frame；Two elastic strings be arranged in parallel, and the both ends of every elastic string are respectively from two
Perforate on string frame is extended downwardly after penetrating the inside of string frame and is wrapped on corresponding axle；Mass is arranged in two strings
On two elastic strings between frame；Acceleration transducer is arranged on the bottom surface of base；Microcontroller while and acceleration sensing
Device and motor electrical connection.
Described guide rail and base are integral type structure, are made of that mach mode is used on base.
Described mass is in spherical, and elastic string is run through at middle part.
Other parts in the string formula bump leveller of described achievable variation rigidity in addition to elastic string using titanium alloy or
Light material including aluminium alloy is made.
Compared with prior art, the string formula bump leveller of achievable variation rigidity provided by the invention has the advantages that：
Light weight, Whole frequency band vibration damping can be realized, carry out frequency-tracking without treating vibration insulating system, there is self-regulated rigidity ability, therefore
The change of exciting force size can be adapted it to, therefore its robustness can be greatly improved.
Brief description of the drawings
Fig. 1 is the string formula bump leveller axonometric drawing of achievable variation rigidity provided by the invention.
Fig. 2 is that the string formula bump leveller of achievable variation rigidity provided by the invention winds up frame partial internal structure schematic diagram.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described further, but following embodiments are absolutely not to this hair
It is bright to have any restrictions.
As shown in Fig. 1-Fig. 2, the string formula bump leveller of achievable variation rigidity provided by the invention includes base 1, guide rail 2, tooth
Bar 3, string frame 4, elastic string 5, mass 6, gear 7, axle 8, microcontroller, acceleration transducer and motor；Wherein, base 1 is
Tabular, it may be detachably retained in system to be damped；The section of guide rail 2 is in inverted trapezoidal, is arranged on the surface of base 1；
Rack 3 is arranged on the surface of base 1 in a manner of parallel with guide rail 2；String frame 4 is thin wall hollow body structure, shape in the middle part of lower end
The Cheng Youyi inverted trapezoidal grooves being slidably matched with guide rail 2, two spacing distances of string frame 4 are arranged on guide rail 2, and two strings
Relative side surface upper part is respectively formed with a perforate 9 on frame 4, and bottom runs through perpendicular with the length direction of guide rail 2 provided with one
Axle 8, one end of every axle 8 is fixed in the centre bore of a gear 7, and two gears 7 are meshed with rack 3 simultaneously；
Every axle 8 is connected by shaft coupling with the output shaft of motor, and motor is arranged on the inside of string frame；Two elastic strings 5 be arranged in parallel,
The both ends of every elastic string 5 extend downwardly after penetrating the inside of string frame 4 from the perforate 9 on two string framves 4 respectively and are wrapped in phase
On the axle 8 answered；On two elastic strings 5 that mass 6 is arranged between two string framves 4；Acceleration transducer is arranged on bottom
On the bottom surface of seat 1；Microcontroller electrically connects with acceleration transducer and motor simultaneously.
Described guide rail 2 and base 1 are integral type structure, are made of that mach mode is used on base 1.
Described mass 6 is in spherical, and elastic string 5 is run through at middle part.
Other parts in the string formula bump leveller of described achievable variation rigidity in addition to elastic string 5 using titanium alloy or
Light material including aluminium alloy is made.
Now the operation principle of the string formula bump leveller of achievable variation rigidity provided by the invention is described below：When system to be damped
When the vibrational energy of system is transferred to the string formula bump leveller that variation rigidity can be achieved in this, mass 6 will vertically be vibrated, this
When, elastic string 5 can produce Nonlinear Cubic rigidity in vertical direction；Acceleration transducer will monitor shaking for system to be damped in real time
Width signal, when the amplitude of system to be damped changes, the amplitude signal monitored is sent to micro-control by acceleration transducer
Device processed, and judge that the amplitude of system to be damped is increase or reduction compared with before by microcontroller.When system to be damped is shaken
When width increases, under the control of the micro-controller, drive two gears 7 to reversely rotate by axle 8 using two motors, thus make two
Individual string frame 4 moves backward same distance on guide rail 2, so as to which the outer end of elastic string 5 moderately be decontroled, makes the chord length of elastic string 5
Increase, realizes the reduction to bump leveller non-linear rigidity, thus adapts to the change of system amplitude to be damped；When system to be damped
When amplitude reduces, under the control of the micro-controller, two opposite direction rotatings of gear 7 are driven by axle 8 using two motors, thus made
Two string framves 4 move towards same distance on guide rail 2, so as to which the outer end of elastic string 5 is rolled tightly on axle 8, make elastic string 5
Chord length shortens, and realizes the increase to bump leveller non-linear rigidity, thus adapts to the change of system amplitude to be damped；In addition, it is
Save the energy and reduce manufacture difficulty and control difficulty, bump leveller can be controlled using half active mode.
Claims (4)
- A kind of 1. string formula bump leveller of achievable variation rigidity, it is characterised in that：The string formula bump leveller of described achievable variation rigidity Including base (1), guide rail (2), rack (3), string frame (4), elastic string (5), mass (6), gear (7), axle (8), microcontroller Device, acceleration transducer and motor；Wherein, base (1) is tabular, be may be detachably retained in system to be damped；Lead The section of rail (2) is in inverted trapezoidal, is arranged on the surface of base (1)；Rack (3) is arranged on bottom in a manner of parallel with guide rail (2) The surface of seat (1)；String frame (4) is thin wall hollow body structure, is fallen in the middle part of lower end formed with one with what guide rail (2) was slidably matched Trapezoidal groove, two string frame (4) spacing distances are arranged on guide rail (2), and side surface upper part relative on two string framves (4) point Not formed with a perforate (9), bottom, which is run through, is provided with an axle (8) perpendicular with guide rail (2) length direction, every axle (8) One end be fixed in the centre bore of a gear (7), and two gears (7) while be meshed with rack (3)；Every axle (8) it is connected by shaft coupling with the output shaft of motor, motor is arranged on the inside of string frame；Two elastic strings (5) be arranged in parallel, often The both ends of root elasticity string (5) extend downwardly and twined after penetrating the inside of string frame (4) from the perforate (9) on two string framves (4) respectively It is wound on corresponding axle (8)；On two elastic strings (5) that mass (6) is arranged between two string framves (4)；Acceleration Sensor is arranged on the bottom surface of base (1)；Microcontroller electrically connects with acceleration transducer and motor simultaneously.
- 2. the string formula bump leveller of achievable variation rigidity according to claim 1, it is characterised in that：Described guide rail (2) with Base (1) is integral type structure, is made of that mach mode is used on base (1).
- 3. the string formula bump leveller of achievable variation rigidity according to claim 1, it is characterised in that：Described mass (6) In spherical, elastic string (5) is run through at middle part.
- 4. the string formula bump leveller of achievable variation rigidity according to claim 1, it is characterised in that：Described achievable change is firm Other parts in the string formula bump leveller of degree in addition to elastic string (5) are using the light material system including titanium alloy or aluminium alloy Into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710971905.7A CN107588146B (en) | 2017-10-18 | 2017-10-18 | A kind of string formula bump leveller of achievable variation rigidity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710971905.7A CN107588146B (en) | 2017-10-18 | 2017-10-18 | A kind of string formula bump leveller of achievable variation rigidity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107588146A true CN107588146A (en) | 2018-01-16 |
| CN107588146B CN107588146B (en) | 2019-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710971905.7A Expired - Fee Related CN107588146B (en) | 2017-10-18 | 2017-10-18 | A kind of string formula bump leveller of achievable variation rigidity |
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| Country | Link |
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| CN (1) | CN107588146B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236922A (en) * | 2018-02-05 | 2019-01-18 | 杭州富阳新远新能源有限公司 | A kind of damper based on variable friction damper |
| CN112555320A (en) * | 2020-12-08 | 2021-03-26 | 中国民航大学 | Segmented smooth bistable negative-stiffness vibration absorber based on permanent magnet and compression spring assembly |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2642522A1 (en) * | 1976-09-22 | 1978-03-23 | Werner Dr Ing Heinze | Air spring for passive vibration insulation - has additional stiff springs with low damping properties arranged to absorb cross-ways vibration |
| US5779010A (en) * | 1996-07-12 | 1998-07-14 | Technical Manufacturing Corporation | Suspended low-frequency horizontal pendulum isolator for vibration isolation systems |
| CN101225865A (en) * | 2007-12-26 | 2008-07-23 | 西安交通大学 | Single-degree-of-freedom ultralow frequency vertical vibration isolation system |
| CN203335704U (en) * | 2013-05-29 | 2013-12-11 | 长城汽车股份有限公司 | Stiffness-adjustable power vibration absorber |
| CN106369095A (en) * | 2016-10-17 | 2017-02-01 | 安徽信泽科技有限公司 | Disc spring damper with adjustable initial rigidity |
| CN107061614A (en) * | 2017-05-12 | 2017-08-18 | 武汉理工大学 | A kind of adjustable composite buffer of rigidity |
-
2017
- 2017-10-18 CN CN201710971905.7A patent/CN107588146B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2642522A1 (en) * | 1976-09-22 | 1978-03-23 | Werner Dr Ing Heinze | Air spring for passive vibration insulation - has additional stiff springs with low damping properties arranged to absorb cross-ways vibration |
| US5779010A (en) * | 1996-07-12 | 1998-07-14 | Technical Manufacturing Corporation | Suspended low-frequency horizontal pendulum isolator for vibration isolation systems |
| CN101225865A (en) * | 2007-12-26 | 2008-07-23 | 西安交通大学 | Single-degree-of-freedom ultralow frequency vertical vibration isolation system |
| CN203335704U (en) * | 2013-05-29 | 2013-12-11 | 长城汽车股份有限公司 | Stiffness-adjustable power vibration absorber |
| CN106369095A (en) * | 2016-10-17 | 2017-02-01 | 安徽信泽科技有限公司 | Disc spring damper with adjustable initial rigidity |
| CN107061614A (en) * | 2017-05-12 | 2017-08-18 | 武汉理工大学 | A kind of adjustable composite buffer of rigidity |
Non-Patent Citations (1)
| Title |
|---|
| 高中庸: "刚度可调的动力减振器设计及应用", 《农业机械学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236922A (en) * | 2018-02-05 | 2019-01-18 | 杭州富阳新远新能源有限公司 | A kind of damper based on variable friction damper |
| CN109236922B (en) * | 2018-02-05 | 2020-06-30 | 杭州富阳新远新能源有限公司 | Automobile shock absorber of variable friction damper |
| CN112555320A (en) * | 2020-12-08 | 2021-03-26 | 中国民航大学 | Segmented smooth bistable negative-stiffness vibration absorber based on permanent magnet and compression spring assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107588146B (en) | 2019-04-05 |
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Granted publication date: 20190405 Termination date: 20191018 |