CN113595004A - Self-adaptive matching method and system for structural parameters of damper damping steel strand - Google Patents
Self-adaptive matching method and system for structural parameters of damper damping steel strand Download PDFInfo
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- CN113595004A CN113595004A CN202110891871.7A CN202110891871A CN113595004A CN 113595004 A CN113595004 A CN 113595004A CN 202110891871 A CN202110891871 A CN 202110891871A CN 113595004 A CN113595004 A CN 113595004A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/14—Arrangements or devices for damping mechanical oscillations of lines, e.g. for reducing production of sound
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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Abstract
The invention provides a self-adaptive matching method and a system for structural parameters of a damping steel strand of a damper, which adopt a sinusoidal dynamic excitation method to obtain the resonance frequency (multi-frequency resonance according to different structures of the damper) of the damper, and obtain the optimal installation position and matching length of the damping steel strand by monitoring the resonance frequency and simultaneously adjusting the structural parameters (mainly the length) of the damping steel strand under the condition that the mass and the rotation center of a counterweight standard block (hammer head) of the damper are determined.
Description
Technical Field
The invention relates to the field of overhead transmission and transformation circuits, in particular to a self-adaptive matching method and a self-adaptive matching system for damping steel strand structural parameters of a damper.
Background
The damper is one of important parts of an overhead transmission and transformation circuit, and has the main functions of effectively inhibiting the aeolian vibration of a lead, reducing the vibration stress of the lead at the outlets of a strain clamp and a suspension clamp, and avoiding the influence of fatigue fracture and strand breakage of the lead caused by long-term aeolian vibration on the safe operation of a power transmission line. The device generally comprises a wire clamp for clamping a wire, a damping steel strand, a counterweight standard block (hammer head), a sleeve for connecting the steel strand and the counterweight standard block (hammer head), and the like.
In the design process of the damper, the vibration frequency range of the hammers at two sides of the damping steel strand is ensured to be consistent with the dangerous vibration frequency range of the lead. The vibration frequency of the damper is related to the mass distribution of the counterweight standard block (hammer head) and the performance of the damping steel strand. When the mass of the hammer head and the self-rotation center are determined, the structural parameters of the damping steel strand are adjusted, and the structural parameters are important parameters for matching the resonant frequency and the power spectrum of the damper system. In conventional design specifications, after the length of the damping steel strand is determined, the performance of the steel strand to absorb the vibration of the wire is determined theoretically. The damping steel strand consists of a plurality of strands of monofilaments, and the fixing modes of two ends of the steel strand are different, so that the damping performance of the steel strand is changed in the assembling and fixing process, and the damping parameters of the steel strand are in certain dispersibility. Therefore, even if the structural size of the steel strand is determined according to theoretical design data, the resonant frequency and the power spectrum of the damper cannot meet the design requirements due to the dispersion error of the damping parameters of the damping steel strand. Although the rigidity and the damping characteristic of the damping steel strand can be tested in advance, the resonance frequency and the power spectrum of the damper system can still be changed due to the structural parameter errors of the damping steel strand in the installation process.
Disclosure of Invention
The invention aims to solve the problems that: even if the structural size of the steel strand is determined according to theoretical design data, the resonant frequency and the power spectrum of the damper cannot meet the design requirements due to the dispersion error of the damping parameters of the damping steel strand.
In order to solve the above problems, in one aspect, the present invention provides a method for adaptively matching structural parameters of a damper damping steel strand, wherein the method comprises the following steps:
s1, manufacturing 2 hammers of the anti-vibration hammer into a counterweight standard block 4, wherein the gravity centers of the hammers are superposed with the gravity center of the counterweight standard block 4 and are all arranged at the connecting point of a damping steel strand 2 and the counterweight standard block 4;
s2, mounting the damping steel strand 2 and the counterweight standard block 4 according to the actual mounting mode of the damping steel strand 2 and the counterweight standard block 4 of the damper, and presetting the lengths L1 and L2 of the damping steel strand 2 at two sides of a clamping wire clamp 3;
s3, mounting the lower end of the clamping wire clamp 3 on an electromagnetic excitation table 6, and setting the excitation frequency fo of the electromagnetic excitation table 6;
s4, connecting the lower end of the clamping wire clamp 3 with a force sensor 5 under a sine excitation condition, and detecting and obtaining the resonance frequency fi and the power spectrum of the damper through the force sensor 5;
s5, comparing the numerical difference between the excitation frequency fo and the resonance frequency fi through a data processing system, and judging the adjustment directions of the lengths L1 and L2; if the numerical difference is within a specified error range, directly taking the lengths L1 and L2 as the installation length of the damping steel strand 2; if the value difference is not within the specified error range, after the lengths L1 and L2 of the damping steel strand 2 are adjusted, the step S2 is carried out until reasonable resonant frequency values and power spectrum data series values are obtained, and therefore the installation length of the damping steel strand 2 is determined.
Preferably, the mass of the counterweight standard block 4 is selected according to the structural size of the damping steel strand 2.
Preferably, in S2, the lengths L1 and L2 are preset to be the same value or different values according to the theoretical design requirement, so as to obtain different frequency distribution characteristics.
Preferably, the adjusting of the lengths L1 and L2 of the damping strand 2 in S5 is adjusted by manual or automatic means.
Preferably, in the step S5, if the difference between the values of the excitation frequency and the resonance frequency is more than + 10%, the lengths L1 and L2 of the damping steel strand are shortened; and if the difference between the values of the excitation frequency and the resonance frequency is less than-10%, the lengths L1 and L2 of the damping steel strands are adjusted to be long.
In another aspect, the present invention further provides a system, which employs the above adaptive matching method for structural parameters of a damper damping steel strand, wherein the system includes:
the damper comprises a spiral expansion sleeve 1, a damping steel strand 2, a clamping wire clamp 3 and a counterweight standard block 4; the damping steel strand 2 and the counterweight standard block 4 are fixedly connected through the spiral expansion sleeve 1, and the damping steel strand 2 is connected with a power transmission and transformation line through the clamping wire clamp 3;
a force sensor 5 for measuring the resonance frequency of the damper;
the frequency and the amplitude of the electromagnetic excitation table 6 can be adjusted, and the lower end of the clamping wire clamp 3 is connected with the force sensor 5 and is arranged on the electromagnetic excitation table 6;
and the force sensor 5 and the electromagnetic excitation table 6 are respectively connected with the data processing system.
Preferably, the spiral expansion sleeve 1 is arranged in an opening of the counterweight standard block 4.
Preferably, the damping steel strand 2 and the clamping clip 3 are fixed by crimping.
Preferably, the counterweight standard block 4 is used for simulating an equal mass hammer head of the damper and a mass center and a rotation center of the equal mass hammer head.
Compared with the prior art, the self-adaptive matching method and the system for the structural parameters of the damper damping steel strand have the following beneficial effects:
(1) the self-adaptive matching method and the system thereof of the structural parameters of the damping steel strand of the damper adopt a sine dynamic excitation method to obtain the resonance frequency (multi-frequency resonance according to different structures of the damper) of the damper, and obtain the optimal installation position and the matching length of the damping steel strand by monitoring the resonance frequency and simultaneously adjusting the structural parameters (mainly the length) of the damping steel strand under the condition that the mass and the rotation center of a counterweight standard block (hammer head) of the damper are determined, so that the self-adaptive matching method is a simple self-adaptive control method, and can accurately and quickly determine the matching size of the damping steel strand which is actually used to obtain a satisfactory result;
(2) the invention relates to a self-adaptive matching method and a system for structural parameters of a damping steel strand of a damper, wherein a damper model with adjustable length of the damping steel strand is arranged on an excitation device, under the condition of sinusoidal dynamic excitation, the distance between a counterweight standard block (hammerhead) and a clamping wire clamp is adjusted, or the position of the clamping wire clamp of the damping steel strand on the damping steel strand or the length of the damping steel strand is adjusted, and the length parameter of the damping steel strand is determined until the matched resonance frequency and power spectrum of the damper are obtained.
Drawings
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is a schematic diagram of the system of the present invention.
Description of reference numerals:
1. a spiral expansion sleeve; 2. damping steel strands; 3. clamping a wire clamp; 4. a counterweight standard block; 5. a force sensor; 6. an electromagnetic excitation stage; l1 and L2, and presetting the length of the steel strand.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Example one
The method for adaptively matching the structural parameters of the damper damping steel strand is provided as shown in fig. 1, and comprises the following steps:
s1, manufacturing 2 hammers of the anti-vibration hammer into a counterweight standard block 4, wherein the gravity centers of the hammers are superposed with the gravity center of the counterweight standard block 4 and are all arranged at the branch points of the damping steel strand 2 and the counterweight standard block 4;
s2, mounting the damping steel strand 2 and the counterweight standard block 4 according to the actual mounting mode of the damping steel strand 2 and the counterweight standard block 4 of the damper, and presetting the lengths L1 and L2 of the damping steel strand 2 at two sides of a clamping wire clamp 3;
s3, mounting the lower end of the clamping wire clamp 3 on an electromagnetic excitation table 6, and setting the excitation frequency fo of the electromagnetic excitation table 6;
s4, connecting the lower end of the clamping wire clamp 3 with a force sensor 5 under a sine excitation condition, and detecting and obtaining the resonance frequency fi and the power spectrum of the damper through the force sensor 5;
s5, comparing the numerical difference between the excitation frequency fo and the resonance frequency fi through a data processing system, and judging the adjustment directions of the lengths L1 and L2; if the numerical difference is within a specified error range, directly taking the lengths L1 and L2 as the installation length of the damping steel strand 2; if the value difference is not within the specified error range, after the lengths L1 and L2 of the damping steel strand 2 are adjusted, the step S2 is carried out until reasonable resonant frequency values and power spectrum data series values are obtained, and therefore the installation length of the damping steel strand 2 is determined.
And the mass of the counterweight standard block 4 is selected according to the structural size of the damping steel strand 2.
In S2, the lengths L1 and L2 are preset to be the same value or different values according to the theoretical design requirement, so as to obtain different frequency distribution characteristics.
Wherein the adjusting of the lengths L1 and L2 of the damping strand 2 in S5 is adjusted by manual or automatic means.
Wherein, if the numerical difference between the excitation frequency and the resonance frequency is more than +10 percent in S5, the lengths L1 and L2 of the damping steel strand are shortened; and if the difference between the values of the excitation frequency and the resonance frequency is less than-10%, the lengths L1 and L2 of the damping steel strands are adjusted to be long.
(1) The basic parameters of the FDY-4/5 symmetric tuning fork damper are shown in Table 1.
TABLE 1
Wherein M is the mass of a single counterweight standard block (hammer head), E is the elastic modulus of the damping steel strand, d is the diameter of the damping steel strand, and S is the gyration radius of the counterweight standard block (hammer head).
By adopting the method, the resonant frequencies of the damper corresponding to different lengths of the damping steel strands can be obtained by detecting the resonant frequency of the damper and adjusting the lengths L1 and L2 of the damping steel strands, as shown in Table 2.
TABLE 2
When the length of the damping steel strand L1 is equal to L2 is equal to 0.180m, the resonant frequency f1 of the damper is equal to 4.782Hz, and f2 is equal to 11.918Hz, and the resonant frequencies of the damper corresponding to different lengths of the damping steel strand can be known in the same way.
The resonance frequency is the natural frequency of the damper, and the length L1 of the damping steel strand of the symmetric tuning fork type damper is L2, so that only 2 frequencies f1 and f2 (first order and second order) are provided. The exciting frequency is continuously swept, exciting is carried out from a lowest frequency and a continuously changing frequency, and the detected resonant wave is the resonant frequency. Due to different structural designs, different resonant frequencies can be obtained, namely the lengths L1 and L2 of the damping steel strands are adjusted, and the lengths L1 and L2 of the damping steel strands are fixed after the desired resonant frequencies of various orders are obtained.
The error between the excitation frequency and the resonance frequency is less than 20% in general engineering requirements, and by adopting the method, the error can be less than 10% and is higher than the engineering standard requirements, so that the performance is improved. If the difference between the excitation frequency and the resonance frequency is more than + 10%, the lengths L1 and L2 of the damping steel strand are shortened; and if the difference between the values of the excitation frequency and the resonance frequency is below-10%, the lengths L1 and L2 of the damping steel strand are adjusted to be long until a reasonable resonance frequency value and a power spectrum data series value are obtained, so that the installation length of the damping steel strand is determined.
The power spectrum reflects the energy transfer of vibration, and the damper absorbs much energy consumed under a certain frequency, and is measured by the power spectrum.
(2) The basic parameters of the FRG-34 asymmetric tuning fork damper are shown in Table 1.
By adopting the method, the resonant frequencies of the damper corresponding to different lengths of the damping steel strands can be obtained by detecting the resonant frequency of the damper and adjusting the lengths L1 and L2 of the damping steel strands, as shown in Table 3.
TABLE 3
When the length of the damping steel strand L1 is 0.180m and the length of the damping steel strand L2 is 0.225m, the resonant frequency f1 is 7.752Hz, f2 is 19.973Hz, f3 is 7.183Hz, and f4 is 19.346Hz, and the resonant frequency of the damper is known in the same way when the lengths of the damping steel strands are different.
The resonance frequency is the natural frequency of the damper, and the length L1 of the damping steel strand of the asymmetric tuning fork type damper is different from that L2, so that the frequencies f1, f2, f3 and f4 are 4.
Thus, the method in this embodiment is to realize adaptive matching of the structural parameters of the damping steel strand of the damper during adjustment (by manual or automatic means) of the position and length of the damping steel strand by monitoring the resonant frequency and power spectrum of the installed damper under the sinusoidal excitation condition.
Example two
Providing a system, which employs an adaptive matching method for structural parameters of a damper damping steel strand according to the first embodiment, as shown in fig. 2, wherein the system comprises:
the damper comprises a spiral expansion sleeve 1, a damping steel strand 2, a clamping wire clamp 3 and a counterweight standard block 4; the damping steel strand 2 and the counterweight standard block 4 are fixedly connected through the spiral expansion sleeve 1, and the damping steel strand 2 is connected with a power transmission and transformation line through the clamping wire clamp 3;
a force sensor 5 for measuring the resonance frequency of the damper;
the frequency and the amplitude of the electromagnetic excitation table 6 can be adjusted, and the lower end of the clamping wire clamp 3 is connected with the force sensor 5 and is arranged on the electromagnetic excitation table 6;
and the force sensor 5 and the electromagnetic excitation table 6 are respectively connected with the data processing system.
Wherein, the spiral expansion sleeve 1 is arranged in the opening of the counterweight standard block 4.
The damping steel strand 2 and the clamping wire clamp 3 are fixed through compression joint.
The counterweight standard block 4 is used for simulating an equal-mass hammer head of the damper and a mass center and a rotation center of the equal-mass hammer head.
In this way, the system in this embodiment controls the length from the fixed end of the counterweight standard block (hammer head) to the fixed end of the clamping wire clamp by adjusting the position of the counterweight standard block (hammer head) on the damping steel strand. After the counterweight standard block (hammerhead) is adjusted to a reasonable position, the damping steel strand and the counterweight standard block (hammerhead) are fixed through the spiral expansion sleeve. After the parameter test is completed, the spiral expansion sleeve is loosened, and the position of the counterweight standard block (hammer head) on the damping steel strand can be moved, so that the length adjustment of the damping steel strand is realized.
Although the present invention has been disclosed above, the scope of the present invention is not limited thereto. Various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are intended to be within the scope of the invention.
Claims (9)
1. A self-adaptive matching method for damping steel strand structural parameters of a damper is characterized by comprising the following steps:
s1, manufacturing 2 hammers of the anti-vibration hammer into a counterweight standard block (4), wherein the gravity centers of the hammers are superposed with the gravity center of the counterweight standard block (4) and are positioned at the connecting point of a damping steel strand (2) and the counterweight standard block (4);
s2, mounting the damping steel strand (2) and the counterweight standard block (4) according to the actual mounting mode of the damping steel strand (2) and the counterweight standard block (4) of the damper, and presetting the lengths L1 and L2 of the damping steel strand (2) at two sides of a clamping wire clamp (3);
s3, mounting the lower end of the clamping wire clamp (3) on an electromagnetic excitation table (6), and setting the excitation frequency fo of the electromagnetic excitation table (6);
s4, under the condition of sinusoidal excitation, connecting the lower end of the clamping wire clamp (3) with a force sensor (5), and detecting and obtaining the resonance frequency fi and the power spectrum of the damper through the force sensor (5);
s5, comparing the numerical difference between the excitation frequency fo and the resonance frequency fi through a data processing system, and judging the adjustment directions of the lengths L1 and L2; if the numerical difference is within a specified error range, directly taking the lengths L1 and L2 as the installation length of the damping steel strand (2); if the value difference is not within the specified error range, after the lengths L1 and L2 of the damping steel strand (2) are adjusted, the step S2 is carried out until reasonable resonant frequency values and power spectrum data series values are obtained, and therefore the installation length of the damping steel strand (2) is determined.
2. The adaptive matching method for the structural parameters of the damper stranded wire according to claim 1, wherein the mass of the counterweight standard block (4) is selected according to the structural dimension of the damper stranded wire (2).
3. The adaptive matching method for structural parameters of a damper damping strand according to claim 1, wherein the lengths L1 and L2 are preset to be the same value or different values according to theoretical design requirements in S2, so as to obtain different frequency distribution characteristics.
4. The adaptive matching method for structural parameters of damper damping strand according to claim 1, wherein the adjusting of the lengths L1 and L2 of the damping strand (2) in S5 is adjusted by manual or automatic means.
5. The adaptive matching method for structural parameters of the damper damping strand of claim 1, wherein in S5, if the difference between the excitation frequency and the resonance frequency is above + 10%, the lengths L1 and L2 of the damping strand are shortened; and if the difference between the values of the excitation frequency and the resonance frequency is less than-10%, the lengths L1 and L2 of the damping steel strands are adjusted to be long.
6. A system using the adaptive matching method of structural parameters of a damper damping strand according to any one of claims 1 to 5, the system comprising:
the damper comprises a spiral expansion sleeve (1), a damping steel strand (2), a clamping wire clamp (3) and a counterweight standard block (4); the damping steel strand (2) and the counterweight standard block (4) are fixedly connected through the spiral expansion sleeve (1), and the damping steel strand (2) is connected with a power transmission and transformation wire through the clamping wire clamp (3);
a force sensor (5) for measuring the resonance frequency of the damper;
the frequency and the amplitude of the electromagnetic excitation table (6) can be adjusted, and the lower end of the clamping wire clamp (3) is connected with the force sensor (5) and is arranged on the electromagnetic excitation table (6);
and the force sensor (5) and the electromagnetic excitation table (6) are respectively connected with the data processing system.
7. System according to claim 6, characterized in that the helical expansion sleeve (1) is arranged in an opening of the counterweight standard block (4).
8. System according to claim 6, characterized in that the damping steel strands (2) are fixed with the clamping clamps (3) by crimping.
9. The system according to claim 6, characterized in that the counterweight standard block (4) is used to simulate the seismic damper's iso-mass hammer head and its center of mass and centre of gyration.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114942111A (en) * | 2022-04-27 | 2022-08-26 | 武汉中誉鼎力智能科技有限公司 | Method for testing damping characteristic of steel strand of damper |
| CN115122271A (en) * | 2022-07-18 | 2022-09-30 | 山东光大线路器材有限公司 | Damper integration equipment |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3748370A (en) * | 1971-09-07 | 1973-07-24 | Innocente Riganti Di Innocente | Spacer-damper for conductors of overhead electric lines |
| CN104265052A (en) * | 2014-10-21 | 2015-01-07 | 国家电网公司 | Vibration preventing hammer control method for vortex-induced wind vibration of electric power tower frame steel tube member |
| CN104767164A (en) * | 2015-04-24 | 2015-07-08 | 国家电网公司 | Control method for circuit anti-vibration system capable of adjusting resonant frequency |
| CN106065921A (en) * | 2015-04-24 | 2016-11-02 | 古河电工动力系统株式会社 | Aerial line amortisseur and method for designing thereof |
| CN106225976A (en) * | 2016-07-07 | 2016-12-14 | 重庆交通大学 | A kind of method utilizing electromagnetic oscillation principle to measure steel strand prestress |
| CN206135368U (en) * | 2016-08-31 | 2017-04-26 | 山东光大线路器材有限公司 | Can adjust stockbridge damper of hammer block angle |
| CN108539697A (en) * | 2018-05-25 | 2018-09-14 | 江苏易鼎电力科技有限公司 | It is a kind of can be with the damper of adjustment length |
| CN109297662A (en) * | 2018-10-11 | 2019-02-01 | 三峡大学 | A kind of aerial cable vibration testing device and test method |
| CN109742707A (en) * | 2019-01-24 | 2019-05-10 | 重庆大学 | A kind of transmission pressure damper based on PTMD principle |
| CN112952710A (en) * | 2021-04-15 | 2021-06-11 | 浙江维思无线网络技术有限公司 | Intelligent lead shockproof hammer |
-
2021
- 2021-08-04 CN CN202110891871.7A patent/CN113595004B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3748370A (en) * | 1971-09-07 | 1973-07-24 | Innocente Riganti Di Innocente | Spacer-damper for conductors of overhead electric lines |
| CN104265052A (en) * | 2014-10-21 | 2015-01-07 | 国家电网公司 | Vibration preventing hammer control method for vortex-induced wind vibration of electric power tower frame steel tube member |
| CN104767164A (en) * | 2015-04-24 | 2015-07-08 | 国家电网公司 | Control method for circuit anti-vibration system capable of adjusting resonant frequency |
| CN106065921A (en) * | 2015-04-24 | 2016-11-02 | 古河电工动力系统株式会社 | Aerial line amortisseur and method for designing thereof |
| CN106225976A (en) * | 2016-07-07 | 2016-12-14 | 重庆交通大学 | A kind of method utilizing electromagnetic oscillation principle to measure steel strand prestress |
| CN206135368U (en) * | 2016-08-31 | 2017-04-26 | 山东光大线路器材有限公司 | Can adjust stockbridge damper of hammer block angle |
| CN108539697A (en) * | 2018-05-25 | 2018-09-14 | 江苏易鼎电力科技有限公司 | It is a kind of can be with the damper of adjustment length |
| CN109297662A (en) * | 2018-10-11 | 2019-02-01 | 三峡大学 | A kind of aerial cable vibration testing device and test method |
| CN109742707A (en) * | 2019-01-24 | 2019-05-10 | 重庆大学 | A kind of transmission pressure damper based on PTMD principle |
| CN112952710A (en) * | 2021-04-15 | 2021-06-11 | 浙江维思无线网络技术有限公司 | Intelligent lead shockproof hammer |
Non-Patent Citations (2)
| Title |
|---|
| 汪峰等: "架空输电线路大跨越导线微风振动试验", 《重庆大学学报》 * |
| 罗啸宇等: "防振锤非线性阻抗实验研究及参数识别", 《振动与冲击》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114942111A (en) * | 2022-04-27 | 2022-08-26 | 武汉中誉鼎力智能科技有限公司 | Method for testing damping characteristic of steel strand of damper |
| CN115122271A (en) * | 2022-07-18 | 2022-09-30 | 山东光大线路器材有限公司 | Damper integration equipment |
| CN115122271B (en) * | 2022-07-18 | 2024-02-20 | 山东光大线路器材有限公司 | Damper integration equipment |
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