CN107611902B - A kind of translation rapid damping elasticity release and design method - Google Patents
A kind of translation rapid damping elasticity release and design method Download PDFInfo
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- CN107611902B CN107611902B CN201711044185.6A CN201711044185A CN107611902B CN 107611902 B CN107611902 B CN 107611902B CN 201711044185 A CN201711044185 A CN 201711044185A CN 107611902 B CN107611902 B CN 107611902B
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Abstract
The amplitude and frequency of conducting wire translation are measured by the MEMS inertial measurement system constructed by mems accelerometer, and then the structure and damping parameter of release are damped according to the amplitude and Frequency Design of the translation, main includes the coefficient of elasticity of pressure spring, pressure spring length, joint number (order i.e. a few rank dampers), quality, material and adjusting bolt etc.；And then design a kind of translation rapid damping elasticity release, including outer shell barrel, slide bar, bolt, sealing ring, spring bearing, pressure spring or tension spring, bead, sleeve, adjust bolt and the decorative pearl on top of an official cap, its working principle is that by the way that the kinetic energy of conducting wire is converted into elastic potential energy, discharge to dead-beat, i.e. elastic potential energy will not again return on conducting wire, and conducting wire energy release profiles are the very big monotonous curve of negative slope.The damped elasticity release structure is simple, and replacement is convenient, falls guidewire movement energy more particularly to quick release, and without generating oscillation, stationarity is good, has longer service life and application value.
Description
Technical field
The invention belongs to power network line Motion Technology security fields, and in particular to a kind of transmission pressure translation rapid damping bullet
Property release and its design method.
Background technique
Transmission line of electricity is under the influence of Different climate condition, especially UHV transmission line, it may appear that different movements
The subspan oscillation of width and waving for low frequency large amplitude in the aeolian vibration a little of amplitude and frequency, predominantly high frequency, intermediate frequency, always
For transmission pressure movement include that three-degree-of-freedom motions, the horizontal and vertical movements such as horizontal, vertical and twisting can be collectively referred to as putting down
It is dynamic, but when amplitude and frequency reache a certain level, increase conducting wire sag degree, axial stress increases, fatigue limit reduction, pole
Easily cause wire strand breakage；Insulator chain, cross-arm and tower load can be made to become larger simultaneously, cause insulator to swing, cross-arm deformation, bar
The major disasters such as tower inclination constitute great threat to power network safety operation, also can directly cause damages to national economy.
Existing guidewire movement damper respectively has advantage and disadvantage: double pendulum damps release and is suitable for split conductor, easy for installation,
Anti-vibration effect is preferable；Inter-phase spacer can be applied to the transmission line of electricity or higher voltage grade of 220kV and following voltage class
The problems such as compact line, there are aging, electric discharge, bendings, large amplitude anti-vibration effect is preferable；Flow-disturbing damping release is mainly used for
The relatively thin area of icing, using split conductor is more than on single conductor, this antihunting device is light, is easily installed, and there are agings, bad
The problem of change；Eccentric hammer is suitable for split conductor, pays attention to the influence to aeolian vibration, anti-vibration effect is preferable；Detuning pendulum is in list
Using effectively on conducting wire, the application on split conductor requires study；Ballast damps release materials conveniently, gentle breeze can be inhibited to shake
Dynamic, freedom degree is big, is easy to produce disturbance；Cable clip rotary type conductor spacer anti-vibration effect is good, will not have a negative impact to route,
Cable clip rotary type conductor spacer is higher than general interval stick cost.Due to guidewire movement the complex nature of the problem, so existing common fortune
The specific aim and use upper limitation that dynamic damping device has it to design, but existing damping release has a general character
The shortcomings that, the kinergety of conducting wire can not quick release completely fall, some can come back to conducting wire, generate mutual
Disturbed motion, or even accelerate the damage to transmission line of electricity.
Although power grid movement includes the movement (changes will occur for amplitude and frequency) of various complexity, prejudicial to power grid
It is mainly exactly the amplitude and frequency of power grid movement, for some specific area, there are main amplitude and frequencies for guidewire movement
Rate, thus need damp fall these kinergeties, the present invention a kind of translation rapid damping elasticity release of redesign, will not produce
Raw oscillation, stationarity are good.
Summary of the invention
It is an object of the invention to the MEMS inertial measurement systems by being constructed by mems accelerometer to measure conductor flat
Dynamic amplitude and frequency, and then according to the structure and damping parameter of the amplitude of the translation and Frequency Design damping release, mainly
Coefficient of elasticity including pressure spring or tension spring, pressure spring length, joint number (order i.e. a few rank dampers), quality, material and adjusting
Bolt etc..
Transmission pressure movement measurement system specifically includes that transmission pressure moves MEMS inertial measurement system, wireless transmission, prison
Four parts of control center and power supply.
Due to can use true transmission line of electricity the purpose of the invention is to measure the exercise data of somewhere power grid
Exercise data is measured, a true simulation transmission tower route can also be constructed, the area of needs is installed to, to obtain the ground
The route exercise data in area, and then its amplitude-frequency characteristic is analyzed, the design for the guidewire movement damper of this area provides parameter.
Due to the movement of conducting wire, the acceleration information of MEMS inertial measurement system acquisition have higher-dimension, complexity, dynamic and
The characteristics such as strong noise use 5 points of smothing filterings three times to the acceleration of acquisition first, then carry out temperature-compensating processing, finally
Remove the constant value deviation of acceleration.
Measurement to guidewire movement amplitude is measured by the method for calculating motion profile or positioning, because of track
Or positioning measurement needs to navigate grade inertial navigation system, and volume and cost all can be very big, in addition be the shortcomings that inertia measurement
Initial value is needed, and can also be increasing with the accumulated error of time, finally results in and be unable to measure.
Since the translation amplitude of transmission pressure is determined by the speed and its period of motion of conducting wire, the speed of conducting wire is again by accelerating
Degree and its period of motion determine, therefore directly can carry out amplitude equivalent analysis using acceleration signal.
When vertical or horizontal movement the amplitude or frequency of either conducting wire reache a certain level, power grid can all occur not
With the damage or damage of degree, due to amplitude represent be energy size, and amplitude and accelerometer export acceleration (ax,
ay,az) again related, so using the quadratic sum of accelerationThe translational motion energy for indicating conducting wire, that is, indicate
The degree of amplitude.
Since acceleration is the movement of each axis and stress condition of measurement point transmission pressure, movement width can be carried out from A formula
The decomposition and identification of degree and frequency: by every acquisition L (ax,ay,az) data are one group, the data length of acquisition is according to this
The guidewire movement period in area probably determines, if not knowing that the period of motion can be appropriate larger；To eliminate accidental error, every sliding
L number takes primary average；Establish the One-dimension Time Series A (y of ARMA sliding autoregression model1,y2,...yN), wherein N=L/l,
y1,y2,...yNFor the item of One-dimension Time Series；To i-th section of sequence Ai(y1,y2,...yN) FFT transform is carried out, obtain i-th section of sequence
The amplitude-frequency distribution of the power transmission line movement of column.
Main amplitude A { the A of this area is found out from the amplitude-frequency distribution of all sections of sequencesm1,Am2,…AmλAnd main frequency f
{fm1,fm2,…fmλ}。
The kinetic energy of conducting wire: being converted into elastic potential energy by the working principle of damped elasticity release, so dead-beat discharge
To fall, i.e., elastic potential energy will not again return on conducting wire, so conducting wire energy release profiles are the very big monotonous curve of negative slope, and
It is not the release profiles of oscillation form.
The part of handicapping Buddhist nun's elastic release energy amount is made of p pressure spring or tension spring, and the coefficient of elasticity of pressure spring or tension spring is k,
Then the damped elasticity period isWherein msFor spring-mass, to avoid it is consistent with the conducting wire main period of motion,
Disturbed motion can be generated like that.
Single elastic potential energy in damped elasticity release is expressed asWherein EsFor elastic potential energy, Δ x is
Amount of elastic deformation.
Due to having p pressure spring or tension spring, installation number q in damped elasticity release, proof resilience potential energy is about
Conducting wire translational energy is expressed asWherein mlThe wire quality between span, ElFor conducting wire kinetic energy, kl
For proportionality coefficient, f is the primary motion frequency of conducting wire.
Since elastic release needs to be mounted on two conducting wires, total conducting wire kinetic energy is 2El=klf2mlA。
If conducting wire kinetic energy is fully converted to elastic potential energy, i.e. pqEs=2El,But due to reality
The limitation of border condition, spring deformation be also impossible to directly be conducting wire motion amplitude, coefficient of elasticity k and damped elasticity release peace
Dress quantity q is also limited, therefore once just can not directly damp all kinetic energy discharged on conducting wire, therefore using multiple
It discharges elastic potential energy method and is designed maximum deformation quantity Δ x, and then calculate k.
Since k has calculated that, the relationship of k and material isWherein, unit N/mm, G are the rigidity of wire rod
Modulus, unit N/mm2, d is line footpath, NcFor number of active coils, DmFor central diameter, determined according to a regional guidewire movement feature
Suitable pressure spring and tension spring parameter.
Since pressure spring and tension spring are often in frequent working condition, material needs endurance and light.
A kind of translation rapid damping elasticity release, including outer shell barrel, slide bar, bolt, sealing ring, spring bearing, pressure spring,
Tension spring, sleeve, adjusts bolt and the decorative pearl on top of an official cap at sliding ball.
Bolt-center aperture is fixed on outer shell barrel both ends, spring bearing and bolt for steady with sealing ring and spring bearing
Determine slide bar and make to keep being axially moved, sealing ring is mounted between bearing and bolt, prevents into water.
Outer shell barrel is for protecting elastic movement part and stop sleeve.
When practical transmission line of electricity installs damping release, slide bar one end is fixed on conducting wire, and one in outer shell barrel
End connection forms elastic part by pressure spring and tension spring, and the other end of the elastic part is connected with sliding ball, and there are also one section by pressure spring two
End is connected to the slidably elastic part of sliding ball, contributes to conducting wire kinetic energy and is converted into elastic potential energy.
Sliding bulb diameter is slightly less than outer shell barrel internal diameter, and outer shell barrel inner wall wants smooth, and sliding ball can be made smoothly to slide.
There is the sliding gap of certain length in outer shell barrel, for discharging the elastic potential energy accumulated on pressure spring or tension spring.
Pressure spring or the cunning ball of tension spring connection use light material.
There are four threaded holes in sleeve wall, and two-by-two symmetrically, threaded hole is provided with the decorative pearl on top of an official cap and pressure spring, and the decorative pearl on top of an official cap is connected with pressure spring,
There is adjusting bolt at screw thread.
There are four holes for shell barrel, communicate when sleeve is covered in outer shell barrel with threaded hole, and four holes are in outward tubaeform,
Guarantee that the decorative pearl on top of an official cap will not be pushed through in outer shell barrel, compress or loosen pressure spring by adjusting bolt, carries out the pressure of the control decorative pearl on top of an official cap.
Since the guidewire movement of reality is it is not possible that fully synchronized movement, at this moment damped elasticity release will work, and lead
The movement of line will push pressure spring or tension spring to move by slide bar in outer shell barrel, when sliding ball encounters the decorative pearl on top of an official cap, due to the decorative pearl on top of an official cap
Pressure, sliding ball will not slide at once, if the kinetic energy of conducting wire continues to be converted into elastic potential energy, the power of sliding ball be pushed to increase,
Sliding ball will slip over the decorative pearl on top of an official cap, and the initial elasticity potential energy for slipping over the decorative pearl on top of an official cap will discharge completely.
When the movement of conducting wire opposite direction, sliding ball just will pull, at this moment slide club and blocked by the decorative pearl on top of an official cap, if conducting wire continues to move
If, sliding ball can equally slip over the decorative pearl on top of an official cap, and at this moment elastic potential energy moment discharges completely again.
In order to damp the movement of different amplitudes, need to fill several sleeves, adjustment adjusts bolt location and carries out the control decorative pearl on top of an official cap more
Pressure, that is to say how much pressure spring or tension spring deformation can just slip over the decorative pearl on top of an official cap, therefore the guidewire movement of different amplitudes can be quick
Damping is fallen.
Which movement amplitude-frequency is sleeved quantity and a regional guidewire movement mainly have have relationship, and why this is also
Need to measure a reason of regional guidewire movement amplitude-frequency all includes those.
The damped elasticity release structure is simple, more targetedly, and is adjusted, falls conducting wire more particularly to quick release
Kinergety has longer service life and higher application value without generating oscillation.
Detailed description of the invention
Fig. 1 is rapid damping elasticity release structure of the present invention；
Fig. 2 is the sleeve axial direction schematic diagram of rapid damping elasticity release of the present invention；
Fig. 3 is that rapid damping elasticity release of the present invention is in kind.
Specific embodiment
First by guidewire movement MEMS inertial measurement system, the motion amplitude and frequency in some area are measured and calculated
Rate, so according to movement amplitude-frequency characteristic design damped elasticity release parameter, finally design rapid damping elasticity release structure,
Material object manufacture and experiment test, below in conjunction with Detailed description of the invention specific implementation of the invention.
Since the purpose of the invention is to the exercise datas by measurement somewhere transmission line of electricity, can use true
Transmission line of electricity can also construct transmission line simulation according to a true shaft tower route 1:1, with being installed to the measurement of needs
Area to obtain the route exercise data of this area, and then analyzes its amplitude-frequency characteristic, releases for the guidewire movement damped elasticity of this area
The design for putting device provides parameter.
Due to the movement of conducting wire, the acceleration information of MEMS inertial measurement system acquisition have higher-dimension, complexity, dynamic and
The characteristics such as strong noise use 5 points of smothing filterings three times to the acceleration of acquisition first, then carry out temperature-compensating processing, finally
Remove the constant value deviation of acceleration.
Measurement to amplitude is measured by the method for calculating motion profile or positioning, because track or positioning are surveyed
The grade inertial navigation system that needs to navigate is measured, and volume and cost all can be very big, in addition be to need the shortcomings that inertia measurement initial
Value, and can be increasing with the accumulated error of time, it finally results in and is unable to measure.
Since the translation amplitude of transmission pressure is determined by the speed and its period of motion of conducting wire, the speed of conducting wire is again by accelerating
Degree and its period of motion determine, therefore directly can carry out amplitude equivalent analysis using acceleration signal.
When vertical or horizontal movement the amplitude or frequency of either conducting wire reache a certain level, power grid can all occur not
With the damage or damage of degree, due to the size for the energy that amplitude represents, and amplitude and three axis component (a of accelerometerx,ay,az)
It is again directly related, so using the quadratic sum of accelerationThe translational motion energy for indicating conducting wire, can indicate
The degree of amplitude.
Since acceleration is the movement of each axis and stress condition of measurement point power transmission line, contain abundant information, it can be from A formula
Carry out the decomposition and identification of motion amplitude and frequency: by every acquisition L (ax,ay,az) data be one group, the data of acquisition
Length is probably determined according to the guidewire movement period of this area, if not knowing that the period of motion can be appropriate larger；It is accidental to eliminate
Error, l number of every sliding take primary average；Establish the One-dimension Time Series A (y of ARMA sliding autoregression model1,y2,...yN),
Wherein N=L/l, y1,y2,...yNFor the item of One-dimension Time Series；To i-th section of sequence Ai(y1,y2,...yN) FFT transform is carried out,
Obtain the amplitude-frequency distribution that power transmission line moves in i-th section of sequence.
Main amplitude A { the A of this area is found out from the amplitude-frequency distribution of all sections of sequencesm1,Am2,…AmλAnd main frequency f
{fm1,fm2,…fmλ}。
The kinetic energy of conducting wire: being converted into elastic potential energy by the working principle of damped elasticity release, so dead-beat discharge
To fall, i.e., elastic potential energy will not again return on conducting wire, so conducting wire energy release profiles are the very big monotonous curve of negative slope, and
It is not the release profiles of oscillation form.
The part of handicapping Buddhist nun's elastic release energy amount is made of p pressure spring or tension spring, and the coefficient of elasticity of pressure spring or tension spring is k,
Then the damper springs period isWherein msFor spring-mass, to avoid and the conducting wire main period of motion one
It causes, disturbed motion can be generated in this way.
Single elastic potential energy in damped elasticity release is expressed asWherein EsFor elastic potential energy, that is to say
The energy to be discharged, Δ x are amount of elastic deformation.
Due to having p pressure spring or tension spring, installation number q in damped elasticity release, proof resilience potential energy is about
Conducting wire translational energy can indicateWherein mlThe wire quality between span, ElFor conducting wire kinetic energy, kl
For proportionality coefficient, f is the primary motion frequency of conducting wire.
Since elastic release needs to be mounted on two conducting wires, total kinetic energy is 2El=klf2mlA。
If conducting wire kinetic energy is fully converted to elastic potential energy, i.e. pqEs=2El,But due to
Practical service environment limitation, spring deformation be also impossible to directly be conducting wire motion amplitude, coefficient of elasticity k and damped elasticity release
Device installation number q is also limited, therefore once just can not directly damp all kinetic energy discharged on conducting wire, can be used more
The secondary elastic potential energy method that discharges is designed maximum deformation quantity Δ x, and then calculates k.
Since k has calculated that, the relationship of k and material isWherein, unit N/mm, G are the rigidity of wire rod
Modulus, unit N/mm2, d is line footpath, NcFor number of active coils, DmFor central diameter, according to the guidewire movement of actual power grid and this area
Amplitude-frequency selects suitable pressure spring and tension spring parameter.
Since pressure spring or tension spring are often in frequent working condition, material needs endurance and light, and metal-rubber can be selected.
As shown in Figure 1, a kind of translation rapid damping elasticity release, including outer shell barrel, two slide bars, two bolts, two
A sealing ring, two spring bearings, even number section pressure spring or tension spring, four sliding balls, a sleeves.
Bolt-center aperture is fixed on outer shell barrel both ends, spring bearing and bolt for steady with sealing ring and spring bearing
Determine slide bar and keep being axially moved, sealing ring is mounted between bearing and bolt, prevents into water.
When practical transmission line of electricity installs damping release, slide bar one end is fixed on conducting wire, and one in outer shell barrel
The elastic part that end connection is made of pressure spring and tension spring, the other end of elastic part are connected with sliding ball；There are also one section in outer shell barrel
The slidably elastic part being made of pressure spring, both ends connect sliding ball；
It is usable that these elastic parts are all that conducting wire kinetic energy is converted into elastic potential, and sliding bulb diameter is slightly less than outer shell barrel internal diameter,
And light material is used, outer shell barrel inner wall wants smooth, and sliding ball can be made free to slide.
There is the sliding gap of certain length in outer shell barrel, for discharging the elastic potential energy accumulated on pressure spring or tension spring.
Outer shell barrel is for protecting elastic movement part and stop sleeve.
Sleeve axial direction schematic diagram as shown in Figure 2, there are four threaded holes in sleeve wall, and two-by-two symmetrically, threaded hole is provided with top
Pearl and pressure spring, the decorative pearl on top of an official cap are connected with pressure spring, there is adjusting bolt at screw thread.
There are four holes for shell barrel, communicate when sleeve is covered in outer shell barrel with threaded hole, and four holes are in outward tubaeform,
Guarantee that the decorative pearl on top of an official cap will not be pushed through in outer shell barrel, compress or loosen pressure spring by adjusting bolt, carries out the pressure of the control decorative pearl on top of an official cap.
Since the guidewire movement of reality is it is not possible that fully synchronized movement, at this moment damped elasticity release will work, and lead
The movement of line will push pressure spring, tension spring movement by slide bar in outer shell barrel, when sliding ball encounters the decorative pearl on top of an official cap, due to decorative pearl on top of an official cap pressure
Presence, sliding ball cannot slip at once, if the kinetic energy of conducting wire continues to be converted into elastic potential energy, the power of sliding ball is pushed to increase,
Sliding ball will slip over the decorative pearl on top of an official cap, and slipping over the elastic potential energy that moment of the decorative pearl on top of an official cap accumulates on pressure spring will discharge completely.
When the movement of conducting wire opposite direction, sliding ball just will pull, at this moment slide club and blocked by the decorative pearl on top of an official cap, if conducting wire continues to move
If, sliding ball can equally slip over the decorative pearl on top of an official cap, and the elastic potential energy moment at this moment accumulated on tension spring discharges completely again.
In order to damp the movement of different amplitudes, need to fill several sleeves, and be gradually increased control sleeve top outside in more
The pressure of pearl, that is to say how much pressure spring or tension spring deformation can just slip over the decorative pearl on top of an official cap, in order to there is certain elastic energy Free up Memory,
Spacing between sleeve is also gradually increased outside in, the guidewire movements of amplitudes different in this way can rapid damping fall.
Sleeved quantity has several main movement amplitude-frequencies identical with a regional guidewire movement, and why this is also
Need to measure a reason of regional guidewire movement amplitude-frequency all includes those.
In order to verify the performance of damping design method and damped elasticity release, damped elasticity release model machine has been made,
Such as Fig. 3, and 110KV model of power transmission system is devised by a certain percentage, carried out damped elasticity release test, the results show
There is good damping.
The damped elasticity release structure is simple, more targetedly, and is adjusted, falls conducting wire more particularly to quick release
Kinergety has longer service life and higher application value without generating oscillation.
Finally, it is stated that the above case study on implementation is only used to illustrate the technical scheme of the present invention rather than limits, it can be to this hair
It is bright to modify or replace, without departing from the range of the technical program, it should all cover and work as in scope of the presently claimed invention
In.
Claims (4)
1. a kind of translation rapid damping elasticity release, characterized by comprising: outer shell barrel, slide bar, bolt, sealing ring, support
Bearing, pressure spring and tension spring, sleeve, adjust bolt and the decorative pearl on top of an official cap at sliding ball；Bolt-center aperture, is fixed with sealing ring and spring bearing
At outer shell barrel both ends, for stablizing slide bar and slide bar being made to keep being axially moved, sealing ring is mounted on bearing for spring bearing and bolt
Between bolt, prevent into water；There are four threaded holes in the sleeve wall of sleeve, and two-by-two symmetrically, threaded hole is provided with the decorative pearl on top of an official cap and pressure
Spring, the decorative pearl on top of an official cap are connected with pressure spring, there is adjusting bolt at screw thread, are compressed or are loosened pressure spring by adjusting bolt, carry out the control decorative pearl on top of an official cap
Pressure；There is the sliding gap of certain length in outer shell barrel, cylinder internal diameter is slightly larger than sliding bulb diameter, makes sliding ball can be suitable in cylinder
Benefit sliding, accumulates in the elastic potential energy on pressure spring or tension spring for quick release；There are four holes on shell barrel, in outside loudspeaker
Shape is communicated with four threaded holes of the sleeve being sleeved in outer shell barrel, and the tubaeform of hole makes the decorative pearl on top of an official cap not to be pushed through shell
In cylinder；Slide bar one end is fixed on conducting wire, and the other end connects the elastic part that is made of pressure spring and tension spring, the elastic part it is another
One end connects sliding ball, is connected to slide the slidably elastic part of ball by pressure spring both ends there are also one section in outer shell barrel, is all that conducting wire is dynamic
It is usable elastic potential to be converted into；Due to reality guidewire movement can not fully synchronized movement, at this moment damped elasticity release
It will work, the movement of conducting wire will push pressure spring or tension spring to move by slide bar in outer shell barrel, when sliding ball encounters the decorative pearl on top of an official cap
When, due to the pressure of the decorative pearl on top of an official cap, sliding ball will not slide at once, if the kinetic energy of conducting wire continues to be converted into elastic potential energy, push
The power of sliding ball increases, and sliding ball will slip over the decorative pearl on top of an official cap, and the initial elasticity potential energy for slipping over the decorative pearl on top of an official cap will discharge completely；As conducting wire negative side
To when movement, sliding ball just will pull, at this moment slide club and blocked by the decorative pearl on top of an official cap, if conducting wire continues movement, sliding ball can equally be slided
The decorative pearl on top of an official cap is crossed, at this moment elastic potential energy moment discharges completely again.
2. a kind of translation rapid damping elasticity release described in claim 1, it is characterised in that: in order to damp different amplitudes
Movement needs to fill several sleeves more, and is gradually increased the pressure of the control decorative pearl on top of an official cap outside in, that is to say that pressure spring or tension spring deformation are more
Just few can slip over the decorative pearl on top of an official cap, in order to there is certain elastic energy Free up Memory, spacing is also gradually increased outside between sleeve, in this way
The guidewire movement of different amplitudes can rapid damping fall.
3. a kind of translation rapid damping elasticity release described in claim 1, it is characterised in that: installation sleeve quantity and one
The guidewire movement in area has several main amplitude-frequency amount of movement identical.
4. a kind of design method of rapid damping elasticity release that is translatable described in claim 1, it is characterised in that step includes:
(1) pass through acquisition three axis component (a of accelerometerx,ay,az), with the quadratic sum of accelerationIndicate conducting wire
The amplitude of translational motion, by every acquisition L (ax,ay,az) data be one group, the data length of acquisition is according to this area
The guidewire movement period probably determines, if not knowing that the period of motion can be appropriate larger；To eliminate accidental error, l number of every sliding
It takes primary average；Establish the One-dimension Time Series A (y of ARMA sliding autoregression model1,y2,...yN), wherein N=L/l, y1,
y2,...yNFor the variable of One-dimension Time Series；To i-th section of sequence Ai(y1,y2,...yN) FFT transform is carried out, obtain i-th section of sequence
The amplitude-frequency distribution of the transmission line of electricity movement of column, the main amplitude A { A found out from each section of amplitude-frequency distributionm1,Am2,…AmλAnd it is main
Frequency f { fm1,fm2,…fmλ}；(2) part of handicapping Buddhist nun elastic release energy amount is made of p pressure spring or tension spring, pressure spring or tension spring
Coefficient of elasticity be k, then the damper springs period beWherein msFor spring-mass, to avoid and conducting wire master
The period of motion wanted is consistent；(3) due to having p pressure spring or tension spring, installation number q, proof resilience gesture in damped elasticity release
Can be about(4) the total translational energy of conducting wire is 2El=klf2mlA, wherein mlThe wire quality between span, El
For solid conductor kinetic energy, klFor proportionality coefficient, f is the primary motion frequency of conducting wire；(5) if conducting wire kinetic energy is fully converted to bullet
Property potential energy, i.e. pqEs=2El,But due to the limitation of physical condition, spring deformation is also impossible to
It is directly the motion amplitude of conducting wire, coefficient of elasticity k and damped elasticity release installation number q are also limited, therefore can not
Primary just directly damping discharges all kinetic energy on conducting wire, can be used repeatedly that dischargeing elastic potential energy method is designed maximum
Deformation quantity Δ x, and then calculate k；(6) since k has calculated that, the relationship of k and material isWherein, unit
It is the modulus of rigidity of wire rod, unit N/mm for N/mm, G2, d is line footpath, NcFor number of active coils, DmFor central diameter, according to an area
Guidewire movement feature determine suitable pressure spring and tension spring parameter；(7) since pressure spring or tension spring are often in frequent working condition,
Material needs endurance；(8) for avoid generate energy interference, outer shell barrel, slide bar, bolt, sealing ring, spring bearing, pressure spring and
Tension spring, sliding ball, sleeve, adjusting bolt and the decorative pearl on top of an official cap select light material.
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| CN108488305B (en) * | 2018-06-20 | 2020-12-18 | 上海理工大学 | Elastic collision damper with thickening fluid |
| CN112616812B (en) * | 2021-01-07 | 2022-12-06 | 重庆妙栽生物科技有限公司 | Agricultural is with crops spout medicine device |
| CN113451969B (en) * | 2021-07-30 | 2022-06-10 | 国网河南省电力公司电力科学研究院 | Optimization method of clamp rotary type double-pendulum anti-galloping device |
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| JPH02101914A (en) * | 1988-10-07 | 1990-04-13 | Asahi Denki Kk | Damper for electric wire |
| CN201386754Y (en) * | 2009-03-25 | 2010-01-20 | 中国电力科学研究院 | Vibration damping device |
| KR20120066694A (en) * | 2010-09-20 | 2012-06-25 | (주)기산이엔씨 | Shock ball shackle for electric power distribution line fixation |
| CN204517335U (en) * | 2015-05-08 | 2015-07-29 | 国网河南省电力公司电力科学研究院 | A kind of multifunctional vibration damping anti-dance device |
| CN204517337U (en) * | 2015-05-08 | 2015-07-29 | 国网河南省电力公司电力科学研究院 | A kind of annular many divisions vibration damping anti-dance device |
| CN106877264B (en) * | 2017-04-20 | 2018-03-23 | 山东大学 | A kind of Anti-galloping energy by collision vibration absorber |
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2017
- 2017-10-31 CN CN201711044185.6A patent/CN107611902B/en not_active Expired - Fee Related
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