CN107611902A - 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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Abstract
The amplitude and frequency of wire translation are measured by the MEMS inertial measurement systems built by mems accelerometer, and then the structure and damping parameter of release are damped according to the amplitude and Frequency Design of the translation, the main coefficient of elasticity, stage clip length, joint number (exponent number i.e. a few rank dampers), quality, material and regulating bolt etc. for including stage clip；And then design a kind of translation rapid damping elasticity release, including outer shell barrel, slide bar, bolt, sealing ring, spring bearing, stage clip or extension spring, bead, sleeve, regulating bolt and the decorative pearl on top of an official cap, its operation principle is by the way that the kinetic energy of wire is converted into elastic potential energy, discharge to dead-beat, i.e. elastic potential energy will not be again returned on wire, and wire energy release profiles are the very big monotonous curve of negative slope.The damped elasticity release is simple in construction, and it is convenient to change, and enables in particular to quick release and falls guidewire movement energy, and without producing vibration, 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 technology
Transmission line of electricity is under the influence of Different climate condition, particularly UHV transmission line, it may appear that different motions
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 motion include horizontal, vertical and three-degree-of-freedom motion, the horizontal and vertical movement such as twist and can be collectively referred to as putting down
It is dynamic, but when amplitude and frequency reach to a certain degree, make the increase of conducting wire sag degree, axial stress increase, fatigue limit reduces, pole
Easily cause wire strand breakage；Insulator chain, cross-arm and tower load can be made to become big simultaneously, cause insulator to swing, cross-arm deforms, bar
The major disasters such as tower inclination, great threat is formed to power network safety operation, also directly national economy can be caused damage.
Existing guidewire movement damper respectively has advantage and disadvantage：Double pendulum damping release is applied to split conductor, easy for installation,
Vibration-isolating effect is preferable；Inter-phase spacer can be applied to 220kV and the transmission line of electricity of following voltage class, or higher voltage grade
Compact line, the problems such as aging, electric discharge, bending be present, large amplitude vibration-isolating effect is preferable；Flow-disturbing damping release is mainly used in
The relatively thin area of icing, using split conductor is more than on single conductor, this antihunting device is light, is easily installed, and aging, bad be present
The problem of change；Eccentric hammer is applied to split conductor, pays attention to the influence to aeolian vibration, and vibration-isolating effect is preferable；Detuning pendulum is in list
Using effectively on wire, the application on split conductor requires study；Ballast damps release convenient material drawing, can suppress gentle breeze and shake
Dynamic, the free degree is big, easily produces disturbance；Cable clip rotary type conductor spacer vibration-isolating effect is good, and circuit will not be had a negative impact,
Cable clip rotary type conductor spacer is higher than general interval rod cost.Due to guidewire movement the complex nature of the problem, so existing conventional fortune
Dynamic damping device has the specific aim and the upper limitation of use that it is designed, but existing damping release has a general character
The shortcomings that, the kinergety of wire can not quick release completely fall, some can be come back to wire, produced mutual
Disturbed motion, or even accelerate the damage to transmission line of electricity.
Although power network motion includes various complicated motions (amplitude and frequency can all change), prejudicial to power network
Main is exactly the amplitude and frequency of power network motion, and for some specific area, guidewire movement has main amplitude and frequency
Rate, so needing damping to fall these kinergeties, the present invention designs a kind of translation rapid damping elasticity release emphatically, will not produced
Raw vibration, stationarity are good.
The content of the invention
It is an object of the invention to the MEMS inertial measurement systems by being built by mems accelerometer to measure conductor flat
Dynamic amplitude and frequency, so according to the amplitude and Frequency Design of the translation damp release structure and damping parameter, mainly
Coefficient of elasticity including stage clip or extension spring, stage clip length, joint number (exponent number i.e. a few rank dampers), quality, material and regulation
Bolt etc..
Transmission pressure movement measurement system mainly includes：Transmission pressure motion MEMS inertial measurement systems, it is wirelessly transferred, supervises
Four parts of control center and power supply.
Due to the invention aims to measure the exercise data of somewhere power network, real transmission line of electricity can be utilized
Exercise data is measured, a real simulation transmission tower circuit can also be built, the area of needs is installed to, to obtain the ground
The circuit exercise data in area, and then its amplitude versus frequency characte is analyzed, the design for the guidewire movement damper of this area provides parameter.
Due to the motion of wire, MEMS inertial measurement systems collection acceleration information have higher-dimension, complexity, dynamic and
The characteristics such as strong noise, 5 points of smothing filterings three times are used to the acceleration of collection first, then carry out temperature-compensating processing, finally
Remove the constant value deviation of acceleration.
Measurement to guidewire movement amplitude is measured by calculating the method for movement locus or positioning, because track
Or positioning measurement needs level inertial navigation system of navigating, and volume and cost all can be very big, are in addition the shortcomings that inertia measurement
Initial value is needed, and accumulated error that can also be over time is increasing, and finally resulting in measure.
Because the translation amplitude of transmission pressure is determined by the speed and its period of motion of wire, the speed of 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 wire are reached to a certain degree, power network can all occur not
With the damage or damage of degree, due to amplitude represent be energy size, and amplitude and accelerometer output acceleration (ax,
ay,az) and it is related, so the quadratic sum using accelerationThe translational motion energy of wire is represented, that is, is represented
The degree of amplitude.
Because acceleration is the motion of each axle and the stressing conditions of measurement point transmission pressure, motion width can be carried out from A formulas
The decomposition and identification of degree and frequency：By to every collection L (ax,ay,az) data are one group, the data length of collection is according to this
The guidewire movement cycle in area probably determines, if not knowing that the period of motion can be suitably larger；To eliminate accidental error, often slide
L number takes once average；Establish the One-dimension Time Series A (y that ARMA slides 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 is carried out, obtain i-th section of sequence
The amplitude-frequency distribution of the power transmission line motion of row.
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 operation principle of damped elasticity release：The kinetic energy of wire is converted into elastic potential energy, so dead-beat discharge
To fall, i.e., elastic potential energy will not be again returned on wire, so 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 up of p stage clip or extension spring, and the coefficient of elasticity of stage clip or extension spring is k,
Then the damped elasticity cycle isWherein msFor spring-mass, to avoid the period of motion main with wire consistent,
Disturbed motion can be produced 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 stage clip or extension spring, installation number q in damped elasticity release, proof resilience potential energy is about
Wire translational energy is expressed asWherein mlThe wire quality between span, ElFor wire kinetic energy, kl
For proportionality coefficient, f is the primary motion frequency of wire.
Because elastic release needs to be arranged on two wires, total wire kinetic energy is 2El=klf2mlA。
If 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 wire motion amplitude, coefficient of elasticity k and damped elasticity release peace
It is also limited to fill quantity q, therefore once just can not possibly directly damp all kinetic energy discharged on wire, therefore using multiple
Discharge elastic potential energy method and be designed the deformation quantity Δ x of maximum, and then calculate k.
Because k has calculated that, the relation 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 stage clip and extension spring parameter.
Because stage clip and extension 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, stage clip,
Extension spring, sliding ball, sleeve, regulating bolt and the decorative pearl on top of an official cap.
Bolt-center perforate, outer shell barrel both ends are fixed on sealing ring and spring bearing, spring bearing and bolt are used for steady
Determine slide bar and be axially moved holding, sealing ring is arranged between bearing and bolt, is prevented into water.
Outer shell barrel is used to protect elastic movement part and stop sleeve.
When actual transmission line of electricity installs damping release, slide bar one end is fixed on wire, and one in outer shell barrel
End connection forms elastic part by stage clip and extension spring, and the other end of the elastic part connects with sliding ball, and also one section by stage clip two
End is connected to slide the slidably elastic part of ball, contributes to 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 inwall is smooth, can make to slide ball and smoothly slide.
There is the slip space of certain length in outer shell barrel, for discharging the elastic potential energy accumulated in stage clip or extension spring.
Stage clip or the cunning ball of extension spring connection use light material.
There are four screwed holes in sleeve wall, two-by-two symmetrically, screwed hole connects built with the decorative pearl on top of an official cap and stage clip, the decorative pearl on top of an official cap with stage clip,
There is regulating bolt at screw thread.
Shell barrel has four holes, is communicated when sleeve is enclosed on outer shell barrel with screwed hole, and four holes are in outwards tubaeform,
Ensure that the decorative pearl on top of an official cap will not be pushed through in outer shell barrel, compress by regulating bolt or loosen stage clip, be controlled the pressure of the decorative pearl on top of an official cap.
Due to the impossible Complete Synchronization motion of the guidewire movement of reality, at this moment damped elasticity release will work, and lead
The motion of line will promote stage clip or extension spring campaign 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 wire continues to be converted into elastic potential energy, promote the power increase of sliding ball,
Sliding ball will slip over the decorative pearl on top of an official cap, and slipping over the initial elasticity potential energy of the decorative pearl on top of an official cap will discharge completely.
When wire opposite direction is moved, sliding ball will be pulled, club is at this moment slided and is blocked by the decorative pearl on top of an official cap, if wire continues to move
If, sliding ball can equally slip over the decorative pearl on top of an official cap, at this moment elastic potential energy moment discharge completely again.
In order to damp the motion of different amplitudes, it is necessary to fill several sleeves, adjustment regulating bolt position is controlled the decorative pearl on top of an official cap more
Pressure, that is to say how much stage clip or extension 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 motion amplitude-frequency is sleeved quantity mainly have have relation with a regional guidewire movement, and why this is also
Need to measure a reason for regional guidewire movement amplitude-frequency all includes those.
The damped elasticity release is simple in construction, more targetedly, and can adjust, and enables in particular to quick release and falls wire
Kinergety, without producing vibration, there is longer service life and higher application value.
Brief description of the drawings
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.
Embodiment
First by guidewire movement MEMS inertial measurement systems, some regional motion amplitude and frequency are measured and calculated
Rate, and then according to motion amplitude versus frequency characte design damped elasticity release parameter, finally design rapid damping elasticity release structure,
Material object manufacture and experiment test, below in conjunction with the specific implementation of the brief description of the drawings present invention.
Due to that the invention aims to the exercise data by measuring somewhere transmission line of electricity, can utilize real
Transmission line of electricity, can also be according to a real shaft tower circuit 1:1 structure transmission line simulation, with being installed to the measurement of needs
Area, to obtain the circuit exercise data of this area, and then its amplitude versus frequency characte is analyzed, released for the guidewire movement damped elasticity of this area
The design for putting device provides parameter.
Due to the motion of wire, MEMS inertial measurement systems collection acceleration information have higher-dimension, complexity, dynamic and
The characteristics such as strong noise, 5 points of smothing filterings three times are used to the acceleration of collection first, then carry out temperature-compensating processing, finally
Remove the constant value deviation of acceleration.
Measurement to amplitude is measured by calculating the method for movement locus or positioning, because track or positioning are surveyed
Amount needs level inertial navigation system of navigating, and volume and cost all can be very big, are that needs are initial the shortcomings that inertia measurement in addition
Value, and accumulated error that can be over time is increasing, and finally resulting in measure.
Because the translation amplitude of transmission pressure is determined by the speed and its period of motion of wire, the speed of 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 wire are reached to a certain degree, power network can all occur not
With the damage or damage of degree, due to the size for the energy that amplitude represents, and amplitude and the axis component (a of accelerometer threex,ay,az)
It is again directly related, so the quadratic sum using accelerationRepresent the translational motion energy of wire, you can represent
The degree of amplitude.
Because acceleration is the motion of each axle and the stressing conditions of measurement point power transmission line, contain abundant information, can be from A formulas
Carry out the decomposition and identification of motion amplitude and frequency：By to every collection L (ax,ay,az) data be one group, the data of collection
Length probably determines according to the guidewire movement cycle of this area, if not knowing that the period of motion can be suitably larger；It is accidental to eliminate
Error, often slide l number and take once averagely；Establish the One-dimension Time Series A (y that ARMA slides 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 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 operation principle of damped elasticity release：The kinetic energy of wire is converted into elastic potential energy, so dead-beat discharge
To fall, i.e., elastic potential energy will not be again returned on wire, so 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 up of p stage clip or extension spring, and the coefficient of elasticity of stage clip or extension spring is k,
Then the damper springs cycle isWherein msFor spring-mass, the period of motion one main with wire is avoided
Cause, can so produce disturbed motion.
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 stage clip or extension spring, installation number q in damped elasticity release, proof resilience potential energy is about
Wire translational energy can representWherein mlThe wire quality between span, ElFor wire kinetic energy, kl
For proportionality coefficient, f is the primary motion frequency of wire.
Because elastic release needs to be arranged on two wires, total kinetic energy is 2El=klf2mlA。
If wire kinetic energy is fully converted to elastic potential energy, i.e. pqEs=2El,But due to
Practical service environment limit, spring deformation be also impossible to directly be wire motion amplitude, coefficient of elasticity k and damped elasticity release
Device installation number q is also limited, therefore once just can not possibly directly damp all kinetic energy discharged on wire, can be used more
The secondary elastic potential energy method that discharges is designed the deformation quantity Δ x of maximum, and then calculates k.
Because k has calculated that, the relation 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 power network of reality and the guidewire movement of this area
Amplitude-frequency selects suitable stage clip and extension spring parameter.
Because stage clip or extension 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
Individual sealing ring, two spring bearings, even number section stage clip or extension spring, four sliding balls, a sleeves.
Bolt-center perforate, outer shell barrel both ends are fixed on sealing ring and spring bearing, spring bearing and bolt are used for steady
Determine slide bar and keep being axially moved, sealing ring is arranged between bearing and bolt, is prevented into water.
When actual transmission line of electricity installs damping release, slide bar one end is fixed on wire, and one in outer shell barrel
The elastic part that end connection is made up of stage clip and extension spring, the other end of elastic part connect with sliding ball；There is one section in outer shell barrel
The slidably elastic part being made up of stage clip, the sliding ball of both ends connection；
It is usable that these elastic parts are all that 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 inwall is smooth, can make to slide ball slidably.
There is the slip space of certain length in outer shell barrel, for discharging the elastic potential energy accumulated in stage clip or extension spring.
Outer shell barrel is used to protect elastic movement part and stop sleeve.
Sleeve axial direction schematic diagram as shown in Figure 2, there are four screwed holes in sleeve wall, two-by-two symmetrically, screwed hole is built with top
Pearl and stage clip, the decorative pearl on top of an official cap connect with stage clip, there is regulating bolt at screw thread.
Shell barrel has four holes, is communicated when sleeve is enclosed on outer shell barrel with screwed hole, and four holes are in outwards tubaeform,
Ensure that the decorative pearl on top of an official cap will not be pushed through in outer shell barrel, compress by regulating bolt or loosen stage clip, be controlled the pressure of the decorative pearl on top of an official cap.
Due to the impossible Complete Synchronization motion of the guidewire movement of reality, at this moment damped elasticity release will work, and lead
The motion of line will promote stage clip, extension spring campaign 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 can not slip at once, if the kinetic energy of wire continues to be converted into elastic potential energy, promote the power increase of sliding ball,
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 accumulated on stage clip will discharge completely.
When wire opposite direction is moved, sliding ball will be pulled, club is at this moment slided and is blocked by the decorative pearl on top of an official cap, if 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 in extension spring discharges completely again.
In order to damp the motion of different amplitudes, it is necessary to fill several sleeves, and gradually increase control sleeve top outside in more
The pressure of pearl, that is to say how much stage clip or extension 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,
The also gradually increase outside in of spacing between sleeve, the guidewire movements of so different amplitudes can rapid damping fall.
Sleeved quantity has that several main motion amplitude-frequencies are identical, and why this is also with a regional guidewire movement
Need to measure a reason for 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 is simple in construction, more targetedly, and can adjust, and enables in particular to quick release and falls wire
Kinergety, without producing vibration, there is longer service life and higher application value.
What is finally illustrated is that above case study on implementation is merely to illustrate technical scheme and unrestricted, can be to this hair
Bright to modify or change, without departing from the scope of the technical program, it all should cover works as in scope of the presently claimed invention
In.
Claims (8)
- A kind of 1. translation rapid damping elasticity release, it is characterised in that including：Outer shell barrel, slide bar, bolt, sealing ring, support Bearing, stage clip and extension spring, sliding ball, sleeve, regulating bolt and the decorative pearl on top of an official cap；Bolt-center perforate, is fixed with sealing ring and spring bearing At outer shell barrel both ends, spring bearing and bolt are used to stablize slide bar and be axially moved holding, and sealing ring is arranged on bearing and spiral shell Between bolt, prevent into water；Slide bar one end is fixed on wire, the elastic part that other end connection is made up of stage clip and extension spring, should The sliding ball of other end connection of elastic part, outer shell barrel is interior one section of slidably elastic portion for being connected to slide ball by stage clip both ends Point, it is usable to be all that wire kinetic energy is converted into elastic potential.
- A kind of 2. translation rapid damping elasticity release described in claim 1, it is characterised in that：Have four in the sleeve wall of sleeve Individual screwed hole, two-by-two symmetrically, screwed hole connect built with the decorative pearl on top of an official cap and stage clip, the decorative pearl on top of an official cap with stage clip, there is regulating bolt at screw thread.
- A kind of 3. translation rapid damping elasticity release described in claim 1, it is characterised in that：Compressed by regulating bolt Or loosen stage clip, it is controlled the pressure of the decorative pearl on top of an official cap.
- A kind of 4. translation rapid damping elasticity release described in claim 1, it is characterised in that：There is a fixed length in outer shell barrel The slip space of degree, cylinder internal diameter are slightly larger than sliding bulb diameter, and making to slide ball can smoothly slide in cylinder, be accumulated in for quick release Elastic potential energy on stage clip or extension spring；There are four holes on shell barrel, in outside tubaeform, with the set being sleeved in outer shell barrel Four screwed holes of cylinder communicate, and the tubaeform of hole makes the decorative pearl on top of an official cap not to be pushed through in outer shell barrel.
- 5. a kind of translation rapid damping elasticity release described in claim 1, is characterised by that its course of work includes：Due to existing The impossible Complete Synchronization motion of real guidewire movement, at this moment damped elasticity release will work, and the motion of wire will lead to Cross slide bar and stage clip or extension spring campaign are promoted in outer shell barrel, when sliding ball encounters the decorative pearl on top of an official cap, due to the pressure of the decorative pearl on top of an official cap, sliding ball will not be stood Carve and slide the past, if the kinetic energy of wire continues to be converted into elastic potential energy, promote the power increase of sliding ball, sliding ball will slip over top Pearl, slipping over the initial elasticity potential energy of the decorative pearl on top of an official cap will discharge completely；When wire opposite direction is moved, sliding ball will be pulled, at this moment Sliding club is blocked by the decorative pearl on top of an official cap, and if wire continues motion, sliding ball can equally slip over the decorative pearl on top of an official cap, and at this moment elastic potential energy moment is again Discharge completely.
- A kind of 6. translation rapid damping elasticity release described in claim 1, it is characterised in that：In order to damp different amplitudes Motion, it is necessary to fill several sleeves, and gradually increase controls the pressure of the decorative pearl on top of an official cap outside in, that is to say that stage clip or extension spring deformation are more more Just few can slip over the decorative pearl on top of an official cap, so that there is certain elastic energy Free up Memory, spacing also gradually increase outside between sleeve, so The guidewire movement of different amplitudes can rapid damping fall.
- A kind of 7. translation rapid damping elasticity release described in claim 1, it is characterised in that：Installation sleeve quantity with one The guidewire movement in area has several main amplitude-frequency amount of movement identical.
- 8. a kind of design method of translation rapid damping elasticity release, it is characterised in that step includes：(1) accelerated by gathering Three axis component (a of degree meterx,ay,az), with the quadratic sum of accelerationThe amplitude of the translational motion of wire is represented, By to every collection L (ax,ay,az) data be one group, the data length of collection is general according to the guidewire movement cycle of this area It is determined that if do not know that the period of motion can be suitably larger；To eliminate accidental error, often slide l number and take once averagely；Establish ARMA slides the One-dimension Time Series A (y of autoregression model1,y2,...yN), wherein N=L/l, y1,y2,...yNFor the one-dimensional time The variable of sequence；To i-th section of sequence Ai(y1,y2,...yN) FFT is carried out, obtain the transmission line of electricity motion of i-th section of sequence Amplitude-frequency is distributed, the main amplitude A { A found out in being distributed from each section of amplitude-frequencym1,Am2,…AmλAnd main frequency f { fm1,fm2,… fmλ}；(2) part of handicapping Buddhist nun elastic release energy amount is made up of p stage clip or extension spring, and the coefficient of elasticity of stage clip or extension spring is k, then The damper springs cycle isWherein msFor spring-mass, to avoid the period of motion main with wire consistent； (3) due to having p stage clip or extension spring, installation number q in damped elasticity release, proof resilience potential energy is about(4) the total translational energy of wire is 2El=klf2mlA, wherein mlThe wire quality between span, ElTo be single Wire kinetic energy, klFor proportionality coefficient, f is the primary motion frequency of wire；(5) if wire kinetic energy is fully converted to elastic potential Can, i.e. pqEs=2El,But due to the limitation of physical condition, spring deformation be also impossible to directly be The motion amplitude of wire, coefficient of elasticity k and damped elasticity release installation number q are also limited, therefore can not possibly once Directly damping discharges all kinetic energy on wire, can use and repeatedly discharge the deformation that elastic potential energy method is designed maximum Δ x is measured, and then calculates k；(6) because k has calculated that, the relation of k and material isWherein, unit N/mm, G For the modulus of rigidity of wire rod, unit N/mm2, d is line footpath, NcFor number of active coils, DmFor central diameter, transported according to a regional wire Dynamic feature determines suitable stage clip and extension spring parameter；(7) because stage clip or extension spring need often in frequent working condition, material Endurance；(8) it is to avoid producing energy interference, outer shell barrel, slide bar, bolt, sealing ring, spring bearing, stage clip and extension spring, cunning Ball, sleeve, regulating bolt and the decorative pearl on top of an official cap select light material.
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| CN108488305A (en) * | 2018-06-20 | 2018-09-04 | 上海理工大学 | A kind of band thickening fluid elastic collision damper |
| CN112616812A (en) * | 2021-01-07 | 2021-04-09 | 廖志明 | Agricultural is with crops spout medicine device |
| CN113451969A (en) * | 2021-07-30 | 2021-09-28 | 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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| 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 |
| CN106877264A (en) * | 2017-04-20 | 2017-06-20 | 山东大学 | A kind of Anti-galloping energy by collision vibration absorber |
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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 |
| 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 |
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| CN106877264A (en) * | 2017-04-20 | 2017-06-20 | 山东大学 | A kind of Anti-galloping energy by collision vibration absorber |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488305A (en) * | 2018-06-20 | 2018-09-04 | 上海理工大学 | A kind of band thickening fluid elastic collision damper |
| CN112616812A (en) * | 2021-01-07 | 2021-04-09 | 廖志明 | Agricultural is with crops spout medicine device |
| 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 |
| CN113451969A (en) * | 2021-07-30 | 2021-09-28 | 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 |
| 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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|---|---|
| CN107611902B (en) | 2019-06-04 |
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