CN201781253U - Preformed detuning pendulum - Google Patents
Preformed detuning pendulum Download PDFInfo
- Publication number
- CN201781253U CN201781253U CN2010205312933U CN201020531293U CN201781253U CN 201781253 U CN201781253 U CN 201781253U CN 2010205312933 U CN2010205312933 U CN 2010205312933U CN 201020531293 U CN201020531293 U CN 201020531293U CN 201781253 U CN201781253 U CN 201781253U
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- CN
- China
- Prior art keywords
- preformed
- hook
- cable
- pendulum
- preformed armor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a preformed detuning pendulum comprising a pendulum bob, a pendulum arm, a hook, a rubber mat and a preformed armor rod, wherein one end of the pendulum arm is connected with the hook; the other end of the pendulum arm is connected with the pendulum bob; the hook is hung on a cable; the rubber mat is arranged on the contacted surface of the hook and the cable; and the preformed armor rod is arranged on the outer surfaces of the hook and the cable. With the structure comprising the rubber mat and the preformed armor rods, the utility model can effectively prevent the phenomenon that the detuning pendulum integrally slips because the cable (a lead, a ground wire or an optical cable) generates creep deformation (the diameter is thinned). The grip strength of a preformed cable clamp on the cable is uniformly distributed within the length of the whole preformed armor rod without centralized stress and damages to hanging points. In addition, the utility model has simple structure, is convenient for installation and can be mounted in an unarmed manner without a special tool.
Description
Technical field
The utility model relates to a kind of overhead transmission line to be prevented waving device, relates in particular to a kind of preformed off resonance pendulum.
Background technology
Wave is a kind of low frequency of producing under wind action of icing cable (lead, ground wire or optical cable), the self-excitation campaign of large amplitude.Waving through regular meeting and cause line tripping to be stopped transport, or damage shaft tower, lead wire and earth wire, insulator and gold utensil, is the comparatively serious a kind of natural calamity of overhead transmission line.
Off resonance pendulum is to adorn an a kind of anti-device of waving with pendulum of certain mass and brachium below cable.Off resonance pendulum is based on the torsional oscillation excitation mechanism, and the torsional oscillation natural frequency of adjusting cable is put in the utilization off resonance, makes it to separate with the high-order natural frequency of cable transverse vibration, thereby prevents the two coupling and bring out overhead transmission line galloping.
The off resonance pendulum of present domestic use adopts chuck that pendulum is fixed on the lead.Chuck is made up of two parts such as metal fixture block, bolt and nut usually.This connected mode easily causes bigger folder stress, compression and shear stress to cable, and long-play can cause the outermost layer monofilament breakage of cable.Ice coating wire jumped owing to deicing through the spring of being everlasting.This chuck connected mode is easy to cause the damage of cable when deicing the jump generation.Fixedly the tightness of the used bolt installation of fixture block will lean on operating personnel's experience to finish, and makes installation quality be difficult to control.Can be after the lead wire and earth wire long-time running because of the creep variation in diameter, the chuck fixed form is easy to cause the slippage on cable of off resonance pendulum, thereby influences its result of use.
The utility model content
The purpose of this utility model provides a kind of cable that can either prevent and waves, and the preformed off resonance pendulum of good protection can be provided cable again.
The utility model adopts following technical scheme to realize:
A kind of preformed off resonance pendulum, comprise pendulum, swing arm, hook, rubber blanket and preformed armor rods, it is characterized in that, one end of swing arm is connected with hook, the other end is connected with pendulum, hook is hung on cable, and hook is provided with rubber blanket with the contact-making surface of cable, and preformed armor rods is installed on the outer surface of hook and cable.
Further, the contact-making surface of preformed armor rods and hook coincide.
Further, described pendulum is made up of two independent sub-pendulums, and fixes by an end of bolt assembly and swing arm.
Further, described hook and swing arm are structure as a whole.
Further, described hook outer surface has one or more projections.
Further, described preformed armor rods is aluminium alloy preformed armor rods or aluminium Baogang preformed armor rods.
Further, described preformed armor rods inner surface is bonded with the grains of sand.
Further, described rubber blanket is the ethylene-propylene-diene monomer rubber cushion.
The utility model can effectively prevent the phenomenon of the off resonance pendulum integral slipping that cable (lead, ground wire or optical cable) generation creep (variation in diameter) causes by the structure that rubber blanket and preformed armor rods are set.Preformed wire clamp is evenly distributed in the whole preformed armor rods length the grip of cable, and unstressed concentrating can not caused damage to hanging point.And the utility model is simple in structure, and is easy for installation, need not specific purpose tool, and free-hand installation gets final product.
Description of drawings
Fig. 1 is the structural representation of the preformed off resonance pendulum of the utility model;
Fig. 2 is the partial enlarged drawing of the preformed off resonance pendulum of the utility model at hook, rubber blanket and preformed armor rods binding site.
Embodiment
As depicted in figs. 1 and 2, the preformed off resonance pendulum of the utility model comprises pendulum 1, swing arm 2, hook 3, rubber blanket 4, preformed armor rods 5, cable 6, cylinder 7, bolt assembly 8, hangers 9, projection 10.The length of the weight of pendulum 1 and swing arm 2 draws according to circuit relevant parameter designing and calculating.Pendulum 1 is connected and fixed by stud component 8 with swing arm 2.Hook 3 is crooked hook-type, and an end connects with swing arm 2, and the other end is hooked on the cable 6 with rubber blanket 4.Rubber blanket 4 is placed between hook 3 and the cable 6, and preformed armor rods 5 is installed on the outer surface of hook 3 and cable 6.Rubber blanket 4 is installed is in order to make and be soft the contact between hook 3 and the cable 6, can prevent effectively that lead, ground wire or optical cable from putting integral slipping because of off resonance takes place in creep, and better absorb vibrational energy.
Pendulum 1 can have multiple shape according to weight.When weight was little, pendulum 1 can be an independent cylinder 7, above welding hangers 9 or be welded direct in the swing arm 2.Hangers 9 is fixing with swing arm 2 by bolt assembly 8.When weight was big, pendulum 1 can be made up of the cylinder 7 of two band hangers 9, and so latter two hangers 9 is fixing with swing arm 2 by bolt assembly 8.The material of pendulum 1 and swing arm 2 can be an iron and steel, and the appearance hot galvanizing is anticorrosion.The material of hook 3 can be a galvanized steel, also can be aluminium alloy.Be economical with materials, the sheet bending of an integral body of swing arm 2 and hook 3 usefulness can be formed that material can be galvanized steel or aluminium alloy.
For the ease of installing, can one or more projections 10 be set at the outer surface of hook 3.Projection 10 can be welded on the outer surface of hook 3, also can be with hook 3 castings.Another effect of projection 10 is to be convenient to preformed armor rods 5 fixed hooks 3, prevents that the two is in circuit generation relative displacement in service.
Preformed armor rods 5 inner surfaces can bonding sand grains, when preformed armor rods 5 is wrapped between hook 3 and the cable 6, can increase the frictional force between it like this, prevents that sliding from appearring in hook.Can on preformed armor rods 5, be provided with the installation colour code, the colour code during installation on the preformed armor rods 5 and projection 10 corresponding or with the corresponding installation of center line of hook 3, make the distribution of lengths of the preformed armor rods 5 installed meet engine request.
When preformed off resonance pendulum is installed, at first rubber blanket 4 and hook 3 are hung on the position that cable 6 requires to hang; Preformed armor rods 5 length central authorities and hook 3 center-aligned, or installation colour code on the preformed armor rods 5 and hook 3 lip-deep projection 10 center-aligned then, or the installation colour code on the preformed armor rods 5 aligns with hook 3 lip-deep projections 10; Then preformed armor rods 5 is wrapped on the cable 6,, can twines by single preformed armor rods according to the actual conditions and the designing requirement of cable, also can several windings simultaneously.
Pendulum 1, swing arm 2 and to link up with 3 material can be iron and steel, the appearance hot galvanizing is anticorrosion; It also can be aluminium alloy.The material of preformed armor rods is aluminium alloy or aluminium Baogang monofilament.Sand grains is a diamond dust.The rubber blanket material can be ethylene propylene diene rubber, or the engineering rubber of other type.
The utility model can effectively prevent the phenomenon of the preformed off resonance pendulum integral slipping that lead generation creep (variation in diameter) causes by the structural design that rubber blanket and preformed armor rods are set.Preformed wire clamp is evenly distributed in the whole preformed armor rods length the grip of cable, and unstressed concentrating can not caused damage to hanging point.And overall structure is simple, and is easy for installation, need not specific purpose tool, and free-hand installation gets final product; Wire clamp and preformed armor rods are aluminum alloy material, and energy-saving effect is remarkable.
Claims (8)
1. a preformed off resonance is put, comprise pendulum, swing arm, hook, rubber blanket and preformed armor rods, it is characterized in that, one end of swing arm is connected with hook, the other end is connected with pendulum, hook is hung on cable, and hook is provided with rubber blanket with the contact-making surface of cable, and preformed armor rods is installed on the outer surface of hook and cable.
2. preformed off resonance pendulum according to claim 1 is characterized in that the contact-making surface of preformed armor rods and hook coincide.
3. preformed off resonance pendulum according to claim 1 is characterized in that described pendulum is made up of two independent sub-pendulums, and fixes by an end of bolt assembly and swing arm.
4. preformed off resonance pendulum according to claim 1 is characterized in that described hook and swing arm are structure as a whole.
5. preformed off resonance pendulum according to claim 1 is characterized in that described hook outer surface has one or more projections.
6. preformed off resonance pendulum according to claim 1 is characterized in that described preformed armor rods is aluminium alloy preformed armor rods or aluminium Baogang preformed armor rods.
7. preformed off resonance pendulum according to claim 1 is characterized in that described preformed armor rods inner surface is bonded with the grains of sand.
8. preformed off resonance pendulum according to claim 1 is characterized in that described rubber blanket is the ethylene-propylene-diene monomer rubber cushion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205312933U CN201781253U (en) | 2010-09-16 | 2010-09-16 | Preformed detuning pendulum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205312933U CN201781253U (en) | 2010-09-16 | 2010-09-16 | Preformed detuning pendulum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201781253U true CN201781253U (en) | 2011-03-30 |
Family
ID=43794456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205312933U Expired - Lifetime CN201781253U (en) | 2010-09-16 | 2010-09-16 | Preformed detuning pendulum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201781253U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106803662A (en) * | 2015-11-26 | 2017-06-06 | 江苏天南电力器材有限公司 | A kind of carbon-fibre wire anti-vibration hammer for high-voltage power transmission lines |
| CN107386770A (en) * | 2017-08-22 | 2017-11-24 | 三峡大学 | It is conveniently replaceable the compound cross-arm electric pole of vibration damping of cross-arm |
| CN108512173A (en) * | 2018-05-12 | 2018-09-07 | 固力发电气有限公司 | A kind of conducting wire pendency method |
-
2010
- 2010-09-16 CN CN2010205312933U patent/CN201781253U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106803662A (en) * | 2015-11-26 | 2017-06-06 | 江苏天南电力器材有限公司 | A kind of carbon-fibre wire anti-vibration hammer for high-voltage power transmission lines |
| CN107386770A (en) * | 2017-08-22 | 2017-11-24 | 三峡大学 | It is conveniently replaceable the compound cross-arm electric pole of vibration damping of cross-arm |
| CN108512173A (en) * | 2018-05-12 | 2018-09-07 | 固力发电气有限公司 | A kind of conducting wire pendency method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110330 |