CN203895920U

CN203895920U - Pre-twisting-type damper

Info

Publication number: CN203895920U
Application number: CN201420104981.XU
Authority: CN
Inventors: 孟汉敏; 郭善林
Original assignee: JIANGSU CHANGYUAN ELECTRICAL EQUIPMENT CO Ltd
Current assignee: JIANGSU CHANGYUAN ELECTRICAL EQUIPMENT CO Ltd
Priority date: 2014-03-10
Filing date: 2014-03-10
Publication date: 2014-10-22
Anticipated expiration: 2024-03-10

Abstract

The utility model provides a pre-twisting-type damper. The pre-twisting-type damper provided by the utility model is solid in installation and high in stability. The pre-twisting-type damper includes a hammer head assembly, a hook used for connecting a cable and pre-twisting wire used for connecting the hook with the cable in a binding manner. The hook back of the hook is provided with at least one inclined grooves that are S-shaped in the length direction and are used for accommodating the pre-twisting wires, so that the pre-twisting wires and the hook can be installed firmly. The pre-twisting-type damper is skillful in design. The hook is designed to have a cross section whose upper part is in the shape of an inferior arc, so that circular arc transition is realized and the pre-twisting wire can fit with the hook closely. At the same time, the back part of the hook is provided with the inclined groove capable of accommodating the pre-twisting wire or at least one boss, so that contact area of the pre-twisting wires and the hook is increased and the connection stability and reliability are enhanced.

Description

Preformed helical shockproof damper

Technical field

The utility model relates generally to power system protection gold utensil field, relates in particular to a kind of preformed helical shockproof damper.

Background technology

The effect of the meteorological conditions such as overhead power line wind-engaging, ice, low temperature, makes circuit produce vibration and wave.Vibration frequency is compared with high and amplitude is very little, wind vibration make overhead wire at suspension point place repeatedly by stubborn folding, cause fatigue of materials, finally cause disconnected strand, broken string accident.The frequency of waving is very low, and amplitude is very large, is easy to cause alternate flashover, causes the serious accidents such as line tripping, power failure or burn wire.So need use stockbridge damper in the use erecting power transmission lines, it can absorb or damping vibration energy, changes circuit wobble frequency, prevents the vibration of circuit or waves.But, because the gib head of linking up with on stockbridge damper is square, while installing fixedly, there is gap (as shown in Figure 9) in the stockbridge damper of existing market, makes stockbridge damper that insecure, poor stability is installed between preformed armor rods and gib head.

Utility model content

The utility model, for the problems referred to above, provides a kind of installation firm, the preformed helical shockproof damper that stability is strong.

The technical solution of the utility model is: comprise Hammer head assembly, hook for connection cable, and for described hook is tied up to the preformed armor rods being connected with described cable, on the back of described hook, offering at least one groove, described groove is oblique groove;

Described groove is S-shaped in the longitudinal direction, for holding described preformed armor rods, described preformed armor rods and described hook is installed more firm.

On the back of described hook, be provided with at least one for locating the projection of described preformed armor rods.

The diameter of the distance >=described preformed armor rods between adjacent described projection.

The utility model design is ingenious, the top that hook is designed to cross section is the shape of minor arc, form arc transition, preformed armor rods and hook can be fitted tightly, at hook back, be provided with oblique groove or S shape groove or at least one projection that can hold preformed armor rods simultaneously, to increase the contact area of preformed armor rods and hook, steadiness, reliability that both connect have been strengthened.

Accompanying drawing explanation

Fig. 1 is the utility model the first execution mode structural representation,

Fig. 2 is Fig. 1 left view,

Fig. 3 is A-A cutaway view in Fig. 2,

Fig. 4 is the utility model the second execution mode structural representation,

Fig. 5 is Fig. 4 left view,

Fig. 6 is B-B cutaway view in Fig. 5,

Fig. 7 is the third execution mode structural representation of the utility model,

Fig. 8 is the 4th kind of execution mode structural representation of the utility model,

Fig. 9 is the defect schematic diagram of the utility model background technology;

In figure, 1 is Hammer head assembly, the 2nd, and hook, the 21st, groove, the 22nd, S shape groove, the 23rd, projection, the 3rd, preformed armor rods, the 4th, cable.

Embodiment

The utility model the first execution mode as Figure 1-3, comprise Hammer head assembly 1, hook 2 for connection cable 4, and for described hook 2 is tied up to the preformed armor rods 3 being connected with described cable 4, the bottom of described hook 2 is located on described Hammer head assembly 1, the top of the cross section of described hook 1 is minor arc shape, is convenient to tie up described preformed armor rods 3, and described preformed armor rods 3 can be fitted tightly with described hook 2.

The second execution mode as Figure 4-Figure 6, offers at least one groove 21 on the back of described hook 2, and described groove 21 can be oblique groove, for holding described preformed armor rods 3, makes described preformed armor rods 3 and described hook 2 install more firm.

As shown in Figure 7, described groove 21 is S shape groove 22 to the third execution mode, can increase like this contact area of described preformed armor rods 3 and described hook 2, further adds stiff stability and reliability.

The 4th kind of execution mode as shown in Figure 8, is provided with at least one for locating the projection 23 of described preformed armor rods 3, the diameter of the distance >=described preformed armor rods 3 between adjacent described protruding 23 on the back of described hook 2.

Claims

1. preformed helical shockproof damper, comprises Hammer head assembly, for the hook of connection cable, and for described hook is tied up to the preformed armor rods being connected with described cable, it is characterized in that, offer at least one groove on the back of described hook, described groove is oblique groove;

2. preformed helical shockproof damper according to claim 1, is characterized in that, is provided with at least one for locating the projection of described preformed armor rods on the back of described hook.

3. preformed helical shockproof damper according to claim 2, is characterized in that, the diameter of the distance >=described preformed armor rods between adjacent described projection.