CN101651318A

CN101651318A - Long-span two-body damper

Info

Publication number: CN101651318A
Application number: CN200910181804A
Authority: CN
Inventors: 薛济萍; 薛驰; 冒新国; 刘丽君; 翟庆华; 缪晶晶
Original assignee: Jiangdong Fittings Equipment Co Ltd
Current assignee: Jiangdong Fittings Equipment Co Ltd
Priority date: 2009-08-06
Filing date: 2009-08-06
Publication date: 2010-02-17
Anticipated expiration: 2029-08-06
Also published as: CN101651318B

Abstract

The invention relates to a long-span two-body damper, in particular to a long-span special two-body damper which belongs to a protection tool for absorbing the vibration energy of an overhead cable and is especially suitable for complex transmission lines with long span and frequent line vibration. The long-span two-body damper comprises a cable clamp I, a cable clamp II, a pre-twisted wire, a steel strand, a middle hammer, a big hammer I and a big hammer II; a hook-shaped sleeve is respectively arranged at the upper part of the cable clamp I and the cable clamp II, a neck is respectively arranged at the head part of the cable clamp I and the cable clamp II, a through hole is respectively arranged at the lower part of the cable clamp I and the cable clamp II, the hook-shaped sleeves arranged at the upper parts of the cable clamp I and the cable clamp II are sleeved on a cable, the pre-twisted wire passes through the necks at the upper parts of the cable clamp I and the cable clamp II and are fixedly connected with the cable, and the steel strand are arranged in the through holes at the lower parts of the cable clamp I and the cable clamp II in a penetrating way and pressed and fixed; the steel stand passes through the through holes arranged at the lower parts of the cable clamp I and the cable clamp II, the middle part of the steel strand passes through the middle hammer, two ends of the steel strand respectively extend into the bag hammer I and the big hammer II, and the three hammers are connected in series by the adhesion of adhesive.

Description

Long-span two-body damper

Technical field

Long-span two-body damper of the present invention relates to the special-purpose binary stockbridge damper of a kind of big leap, is a kind of protection instrument that absorbs the aerial cable vibrational energy, is specially adapted to big leap and waits the frequent complicated used for transmission line of line vibration.

Background technology

The transmission line vibrationproof is in weakness in China always, does not domesticly also see the special-purpose stockbridge damper that can design the harm of effective solution line vibration at big leap.The common stockbridge damper of the general employing of domestic big leap transmission line is at present taked a plurality of being installed in series; Carry out the associating vibrationproof in particular cases adopting damping wire to install.It is narrow that common stockbridge damper has the excited frequency of being subjected to, and consumes energy low and can not really embody the circuit vibration-isolating effect, shortened the circuit operation time limit greatly; Secondly, stockbridge damper is installed wire clamp and is generally adopted the nut type, sliding phenomenon occurs easily in the long-time running process, has had a strong impact on the normal operation and the cycle in useful life of circuit.Once more, be exactly that it uses bolt to connect, for work high above the ground, installation is very inconvenient; The vibration frequency range of common stockbridge damper is limited, and the installation site is worthy of careful study very much.

Summary of the invention

The objective of the invention is at providing a kind of long-span two-body damper with above-mentioned weak point, adopt wire clamp to add preformed armor rods with the cable ways of connecting, and adopt the design novel vibration resistant of three stockbridge damper tups to hammer into shape, can solve big leap transmission line vibrationproof problem, improve vibration-isolating effect greatly.The present invention can reduce existing stockbridge damper to the big problem of the local compression of cable, becomes bolted and is rigidly connected to flexibly connecting, and outer field rubber has good buffer protection function to lead, has reduced the wearing and tearing of cable.The phenomenon of slippage that preformed structure has effectively prevented existing stockbridge damper because screw is loosening.Tup design of the present invention makes territory, stockbridge damper frequency coverage wider, and high frequency response is better, can satisfy extraordinary vibrationproof power requirement, thereby has guaranteed the line security operation.

Long-span two-body damper is to take following technical scheme to realize: long-span two-body damper comprises wire clamp I, wire clamp II, preformed armor rods, steel strand wire, middle tup, big tup I and big tup II.Wire clamp I and wire clamp II top are provided with the hook-shape body cover, wire clamp I and wire clamp II head are provided with draw-in groove, wire clamp I and wire clamp II bottom are provided with through hole, the hook-shape body condom on wire clamp I and wire clamp II top is on cable, preformed armor rods passes wire clamp I fixedlys connected with cable with wire clamp II top draw-in groove, steel strand wire are set in wire clamp I and wire clamp II bottom is provided with in the through hole, and crimping is fixed, to such an extent as to steel strand wire can be in through hole play.Steel strand wire pass wire clamp I and wire clamp II bottom is provided with through hole, tup in the middle of passing in the centre, and both sides are stretched into big tup I and big tup II respectively, and by glue bond, three tups are cascaded.Described preformed armor rods 1 is made up of 3 aluminium Baogang monofilament.Described wire clamp I and wire clamp II are provided with the hook-shape body cover and form the hook groove, and cable is contained in the hook groove of wire clamp.Described wire clamp I and wire clamp II skin are surrounded by rubber layer.

The wire clamp of long-span two-body damper is according to mechanics principle and preformed armor rods radian principle design, similar and comb shape, and wire clip body is an aluminium material; Form preformed chuck behind the parcel rubber of back, the weight head designs according to the constant weight ratio.Described big tup I and middle tup are 1: 2: 3 with big tup II weight ratio

Operation principle: lead vibration on the line passes to steel strand wire by the stockbridge damper wire clamp, and steel strand wire pass to tup, and stockbridge damper reaches vibration-isolating effect by absorbing energy.

Because long-span two-body damper of the present invention adopts wire clamp to add preformed armor rods with the cable ways of connecting, and the design of three stockbridge damper tups of employing, it has the benefit of the following aspects: 1, preformed armor rods has outstanding anti-fatigue performance, can block the slippage of the wire clamp left and right sides, so just prevent stockbridge damper effectively because bolt looseness and slippage influences vibration-isolating effect.2, preformed armor rods is the preform spiral curve, and it can be distributed to the static pressure stress to lead in the bigger zone uniformly, has reduced local compression, becomes bolted being rigidly connected to flexibly connecting, and has strengthened the self-damping of cable.3, online chuck portion is surrounded by very thin one deck rubber, allows wire clamp make contact to for soft with the rigidity of lead and contacts, and does not influence vibration-isolating effect again, and uses for a long time and more the situation that rubber comes off can not occur, and cable is had good buffer protection function.Can better be applicable to the new special lead, as the antihunting device of cables such as soft aluminum conductor.4, with the fixedly connected tup of special gelatin and steel strand wire, thereby avoided causing vibration loss, directly influenced the vibration-isolating effect of stockbridge damper because crimping is tight or long-play and produce the gap.5, the design of three novel tups, from the vibrationproof principle of stockbridge damper deeply analyze, research and design, better meet the needs of circuit vibrationproof.The territory, frequency coverage is wider, and high frequency response is better, can satisfy extraordinary vibrationproof power requirement, thereby has guaranteed the line security operation.6, can free-hand installation not need special instrument.7, adopt the design of three tups that the vibration frequency bandwidth of stockbridge damper is strengthened, be particularly suitable for the vibrationproof demand of big span line.

Description of drawings

The invention will be further described below with reference to accompanying drawing.

Fig. 1 is a kind of execution mode structural representation of long-span two-body damper.

Fig. 2 is a kind of execution mode structure vertical view of long-span two-body damper.

Fig. 3 is the end view of a kind of execution mode structure of long-span two-body damper.

Fig. 4 is the axis side view that waits of a kind of execution mode structure of long-span two-body damper.

Embodiment

With reference to accompanying drawing 1～4, long-span two-body damper comprises wire clamp I 3, wire clamp II 8, preformed armor rods 1, steel strand wire 4, middle tup 5, big tup I 7 and big tup II 2.Wire clamp I 3 and wire clamp II 8 tops are provided with hook-shape body cover 12, wire clamp I 3 and wire clamp II 8 heads are provided with draw-in groove 11, wire clamp I 3 and wire clamp II 8 bottoms are provided with through hole 10, the hook-shape body cover 12 on wire clamp I 3 and wire clamp II 8 tops is enclosed within on the cable 6, preformed armor rods 1 passes wire clamp I 3 fixedlys connected with cable 6 with wire clamp II 8 top draw-in grooves 11, steel strand wire 4 are set in wire clamp I3 and wire clamp II 8 bottoms are provided with in the through hole 10, and crimping is fixed, to such an extent as to steel strand wire 4 can be in through hole 10 play.Steel strand wire 4 pass wire clamp I 3 and wire clamp II 8 bottoms are provided with through hole 10, tup 5 in the middle of passing in the centre, and both sides are stretched into big tup I 7 and big tup II 2 respectively, and by connecting glue bond, three tups are cascaded.Described preformed armor rods 1 is made up of 3 aluminium Baogang monofilament.Described wire clamp I 3 and wire clamp II 8 are provided with hook-shape body cover 12 and form hook groove 9, and cable 6 is contained in the hook groove 9 of wire clamp.Described wire clamp I 3 and wire clamp II 8 skins are surrounded by very thin one deck rubber.

Tuning fork shape is adopted in described big tup outward appearance appearance.

Described big tup I and middle tup are 1: 2: 3 with big tup II weight ratio.

Claims

1, a kind of long-span two-body damper is characterized in that comprising wire clamp I, wire clamp II, preformed armor rods, steel strand wire, middle tup, big tup I and big tup II; Wire clamp I and wire clamp II top are provided with the hook-shape body cover, wire clamp I and wire clamp II head are provided with draw-in groove, wire clamp I and wire clamp II bottom are provided with through hole, the hook-shape body condom on wire clamp I and wire clamp II top is on cable, preformed armor rods passes wire clamp I fixedlys connected with cable with wire clamp II top draw-in groove, steel strand wire are set in wire clamp I and wire clamp II bottom is provided with in the through hole, and crimping is fixed, to such an extent as to steel strand wire can be in through hole play; Steel strand wire pass wire clamp I and wire clamp II bottom is provided with through hole, tup in the middle of passing in the centre, and both sides are stretched into big tup I and big tup II respectively, and by connecting glue bond, three tups are cascaded.

2, long-span two-body damper according to claim 1 is characterized in that described preformed armor rods is made up of 3 aluminium Baogang monofilament.

3, long-span two-body damper according to claim 1 is characterized in that described wire clamp I and wire clamp II are provided with the hook-shape body cover and form the hook groove, and cable is contained in the hook groove of wire clamp.

4, long-span two-body damper according to claim 1 is characterized in that described wire clamp I and wire clamp II skin are surrounded by rubber layer.

5, long-span two-body damper according to claim 1 is characterized in that described big tup I and middle tup and big tup II weight ratio are 1: 2: 3.

6, long-span two-body damper according to claim 1 is characterized in that described big tup outward appearance appearance employing tuning fork shape.