CN202488047U - Anti-vibration device for laying big-length and high-voltage cable along big bridge - Google Patents
Anti-vibration device for laying big-length and high-voltage cable along big bridge Download PDFInfo
- Publication number
- CN202488047U CN202488047U CN2012200792825U CN201220079282U CN202488047U CN 202488047 U CN202488047 U CN 202488047U CN 2012200792825 U CN2012200792825 U CN 2012200792825U CN 201220079282 U CN201220079282 U CN 201220079282U CN 202488047 U CN202488047 U CN 202488047U
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- China
- Prior art keywords
- cable
- vibration
- bridge
- voltage cable
- angle steel
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- Expired - Lifetime
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Abstract
The utility model relates to an anti-vibration device for laying a big-length and high-voltage cable along a big bridge, and the anti-vibration device comprises a cable bracket, wherein the cable bracket is provided with a fireproof groove, angle steel and anti-vibration rubber; a cable is arranged in the fireproof groove; the angle steel is arranged at a foot at the bottom of the fireproof groove; and the anti-vibration rubber is arranged below the angle steel. Compared with the prior art, the anti-vibration device has the advantage of good anti-vibration effect, low cost, convenience in assembly and the like.
Description
Technical field
The utility model relates to a kind of bridge cable, especially relates to a kind of length high-voltage cable and lays along large bridge and use antihunting device.
Background technology
Bridge is the passage that connects land, both sides, yet because various condition restriction, the bridge that China has built has at present mainly been accomplished the traffic effect of bridge itself.Yet bridge can also supply other municipal pipeline to pass through as a most suitable carrier, like water, electricity, communication or the like.For electric power, through on bridge, be provided with cable through bridge can play to safety, reliably, the purpose of transmission of electric energy economically.
Magnitude of vibrations that on bridge, takes place and frequency are different because of kind of the structure of bridge, shape, load or the like.Though predict these very difficulties, can be divided into two kinds haply.A kind of is that integral bridge vibrates at leisure, according to the rigidity of bridge purlin and the intrinsic vibration of length decision; Another kind is according to live load, the vibration between each member of bridge.Vibration is to the influence of cable on the bridge in order to reduce, and this general rubber square cushion block that adopts of technical scheme commonly used at present is fixed on the cable-sustainer, the fatigue of the cable metal sheath that causes to reduce bridge vibration, but effect is not very good.
Summary of the invention
The purpose of the utility model is exactly to provide a kind of vibration-isolating effect is good, cost is low, easy for installation length high-voltage cable to lay along large bridge to use antihunting device in order to overcome the defective that above-mentioned prior art exists.
The purpose of the utility model can realize through following technical scheme: a kind of length high-voltage cable lays along large bridge and uses antihunting device; Comprise cable bearer; It is characterized in that described cable bearer is provided with fire prevention groove, angle steel and vibration-proof rubber, cable is arranged in the fire prevention groove; Described angle steel is arranged on place, fire prevention trench bottom pin limit, and described vibration-proof rubber is arranged under the angle steel.
Described cable surface is laid with aluminium sheath.
Described vibration-proof rubber is a neoprene.
Thick 1～the 5cm of described vibration-proof rubber.
Described fire prevention groove is square, and the angle steel that is complementary with it is established in its pin checkpost, bottom.
Described cable interval down is provided with a cable bearer for 1.5～2 meters.
Compared with prior art, the utility model adopts aluminium sheath, because the vibration-resistant property of aluminum-sheathed cable (S-N characteristic) will be superior to lead sheathed cable greatly.Because cable laying is vibrated under the strong environment at bridge, the aluminium sheath can improve the antivibration ability of cable itself greatly, in addition; In order to prevent because the cable that causes of bridge vibration and the resonance between the bridge; Strain on the assurance aluminium sheath is less than the vibration strain of the aluminium of the permission of maximum, and the cable bearer spacing is taken as 1.5～1.6 meters; And vibration-proof rubber is installed at cable bearer, vibration-isolating effect is good, cost is low, easy for installation.
Description of drawings
Fig. 1 is the sketch map of the utility model antihunting device.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated.
Embodiment 1
As shown in Figure 1, a kind of length high-voltage cable lays along large bridge and uses antihunting device, comprises cable bearer; Described cable bearer is provided with fire prevention groove 1, angle steel 2 and vibration-proof rubber 3, and cable 4 is arranged in the square fire prevention groove 1, and cable 4 surfaces are laid with aluminium sheath; Described angle steel 2 is complementary with the size and the shape on fire prevention trench bottom pin limit, and angle steel 2 is arranged on place, fire prevention pin limit, groove 1 bottom, and described vibration-proof rubber 3 is a neoprene; Thick 1～5cm is arranged on angle steel 2 times.
(1) vibration-resistant property of aluminum-sheathed cable (S-N characteristic) will be superior to lead sheathed cable greatly.Because cable laying is vibrated under the strong environment at bridge, the aluminium sheath can improve the antivibration ability of cable itself greatly, therefore under the bridge laid condition, recommends to adopt aluminum-sheathed cable;
(2) in addition, because the cable that causes of bridge vibration and the resonance between the bridge, guarantee that strain on the aluminium sheath is less than the vibration strain of the aluminium of the permission of maximum in order to prevent.The spacing L of cable support is:
In the formula: the vibration frequency Hz of f------bridge
E
1----buckling resistance=1.1 * 107gcm
2
G-----acceleration of gravity=9.8/s
2
Give information according to present bridge, the bridge natural frequency is between 0.1～0.5Hz, and mobile load frequency (automobile) is between 5～20hz;
According to the estimation result be that the spacing L of cable support should be less than 2 meters, and preferably the cable bearer spacing is taken as 1.5～1.6 meters.
(3) vibration-proof rubber
The bridge cable passage generally selects for use support to lay.The general rubber square cushion block that adopts is fixed on the cable-sustainer fatigue of the cable metal sheath that causes to reduce bridge vibration.The utility model cable is shockproof except using neoprene to do the precautions against earthquakes, adopts certain thickness rubber layer that certain vibration-isolating effect is also arranged in the welding connector.
Claims (6)
1. a length high-voltage cable lays along large bridge and uses antihunting device; Comprise cable bearer; It is characterized in that described cable bearer is provided with fire prevention groove, angle steel and vibration-proof rubber, cable is arranged in the fire prevention groove; Described angle steel is arranged on place, fire prevention trench bottom pin limit, and described vibration-proof rubber is arranged under the angle steel.
2. a kind of length high-voltage cable according to claim 1 lays along large bridge uses antihunting device, it is characterized in that described cable surface is laid with aluminium sheath.
3. a kind of length high-voltage cable according to claim 1 lays along large bridge uses antihunting device, it is characterized in that described vibration-proof rubber is a neoprene.
4. a kind of length high-voltage cable according to claim 1 lays along large bridge uses antihunting device, it is characterized in that the thick 1～5cm of described vibration-proof rubber.
5. a kind of length high-voltage cable according to claim 1 lays along large bridge uses antihunting device, it is characterized in that described fire prevention groove is square, and the angle steel that is complementary with it is established in its pin checkpost, bottom.
6. a kind of length high-voltage cable according to claim 1 lays along large bridge uses antihunting device, it is characterized in that, described cable interval down is provided with a cable bearer for 1.5～2 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200792825U CN202488047U (en) | 2012-03-05 | 2012-03-05 | Anti-vibration device for laying big-length and high-voltage cable along big bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200792825U CN202488047U (en) | 2012-03-05 | 2012-03-05 | Anti-vibration device for laying big-length and high-voltage cable along big bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202488047U true CN202488047U (en) | 2012-10-10 |
Family
ID=46962438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200792825U Expired - Lifetime CN202488047U (en) | 2012-03-05 | 2012-03-05 | Anti-vibration device for laying big-length and high-voltage cable along big bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202488047U (en) |
-
2012
- 2012-03-05 CN CN2012200792825U patent/CN202488047U/en not_active Expired - Lifetime
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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 |
Granted publication date: 20121010 |
|
| CX01 | Expiry of patent term |