CN202887884U - Cable protective clamp and insulator - Google Patents
Cable protective clamp and insulator Download PDFInfo
- Publication number
- CN202887884U CN202887884U CN 201220604304 CN201220604304U CN202887884U CN 202887884 U CN202887884 U CN 202887884U CN 201220604304 CN201220604304 CN 201220604304 CN 201220604304 U CN201220604304 U CN 201220604304U CN 202887884 U CN202887884 U CN 202887884U
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- Prior art keywords
- holding piece
- cable
- clamping part
- connecting plate
- insulator
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- 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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- 230000001681 protective effect Effects 0.000 title abstract 5
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- 230000004888 barrier function Effects 0.000 description 4
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- 238000005452 bending Methods 0.000 description 2
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- 238000010008 shearing Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
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- 238000009661 fatigue test Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
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Abstract
The utility model provides a cable protective clamp and an insulator. The cable protective clamp comprises a first clamping part for clamping a cable, a second clamping part for clamping the cable and a connecting plate, wherein the first clamping part is connected with the second clamping part through the connecting plate. The cable protective clamp provided by the utility model expands the contact area between the cable and the insulator, thereby avoiding the problem of fracture of a wire core of the cable due to a small contact area between a metal clamp of the insulator and the cable. Simultaneously, the cable protective clamp provided by the utility model further has the characteristics of simple structure and low manufacturing cost.
Description
Technical field
The utility model relates to the cable mounting device field, more specifically, relates to a kind of cable protection folder and insulator.
Background technology
Insulator (for example clamp insulator) is widely used in 10 kilovolts the distribution overhead line.Under the cold weather, because the environment of accumulated snow or severe cold causes cable broken string Frequent Accidents, thereby reduce power supply reliability in the winter time, brought potential safety hazard for the operation of circuit.
Insulator of the prior art comprises insulating cover and is used for the metal fixture of clamping cable.When using insulator, cable is along being horizontally through metal fixture, for the part that cable is contacted with metal fixture is convenient to conductivity, thereby with the insulating barrier strip off of cable outer layer, only stays core and contacts with metal fixture.Because the contact area of metal fixture and core is little, thereby the phenomenon that exists stress to concentrate in the edge that metal fixture contacts with core.Under the environment of bad weather, through long wind, Exposure to Sunlight, drench with rain, snow cover, fatigue rupture very easily occurs in cable, the situation of core fracture occurs.
At present, the producer of production insulator does not all consider the stressed problem of fatigue strength of core and metal fixture contact portion.Relevant regulation is made in the requirement that other departments also need not satisfy insulator and wire contact portion.And the disconnected thigh of cable, the method that process in the damage cross section only are with repair sleeve or study for a second time courses one has flunked preformed armor rods and study for a second time courses one has flunked or cut off the remedial measures such as reclosing, the scheme that the prevention cable breaks was not also proposed.Draw above-mentioned conclusion with reference to following information.
In the test of putting down in writing according to " GB775.3-1987 insulator test method the 3rd part mechanical test method ", only the mechanical property of insulator itself is made regulation, as: 3. bend loading is tested; 4. tensile load test; 5. torque failure load test; 7. dynamo-electric load test; 8. internal pressure test etc. does not wherein all comprise and the fatigue test of cable interface part.
Among the existing power industry standard DL/T741-2001 of the People's Republic of China (PRC) " the on-the-spot operating standard of aerial power transmission line " underproof insulator is defined as following phenomenon: 1 porcelain insulator full skirt is damaged, and porcelain has crackle, and enamel burns out; There is the flashover vestige on the self-destruction of 2 glass insulators or surface; 3 synthetic insulator full skirts, sheath, breakage or be full of cracks, bonding agent is aging; 4 insulator steel caps, insulating part, steel pin steel pin, steel cap, water dress cement crackle, crooked, distortion or serious corrosion, steel pin and steel clevis mouth gap overroof are arranged not on same axis; 5 dish-type insulator dielectric resistance are less than 300M Ω, and 500kV circuit dish-type insulator resistance is less than 500M Ω; 6 dish-type insulator spread voltage null value or low values; The locking pin of 7 insulators does not meet the code requirement of locking test; 8 insulator crossarms have serious scale, crackle, and enamel burns out, porcelain damages, full skirt damaged; The angle of deviation of the insulator string fair line road direction of 9 straight line poles (except designing requirement in advance partially) greater than 7.5 degree, and its peak excursion value is greater than 300mm, the insulator crossarm end is offset greater than 100mm; 10 each electric pressure circuit minimum air void and insulator use minimum number, do not meet the regulation of appendix C.
The utility model content
The utility model aims to provide a kind of cable protection folder and insulator, to solve in the prior art owing to cable and the little problem that causes cable fatigue rupture, core fracture of metal fixture contact area.
For solving the problems of the technologies described above, according to an aspect of the present utility model, provide a kind of cable protection folder, comprising: the first clamping part that is used for the clamping cable; The second clamping part that is used for the clamping cable; Connecting plate, the first clamping part is connected with the second clamping part by connecting plate.
Further, the first clamping part comprises the first holding piece and second holding piece that can pivot and be connected with the first holding piece, forms the first grasping part between the first holding piece and the second holding piece, and the first holding piece is fixedly connected with connecting plate.
Further, the second clamping part comprises the 3rd holding piece and the 4th holding piece that can pivot and be connected with the 3rd holding piece, forms the second grasping part between the 3rd holding piece and the 4th holding piece, and the 3rd holding piece is fixedly connected with connecting plate.
Further, the cross-sectional sizes of the first grasping part increases along the direction away from connecting plate.
Further, the cross-sectional sizes of the second grasping part increases along the direction away from connecting plate.
Further, the first side of the second holding piece is connected pivotly with the first side of the first holding piece, and the second side of the first holding piece removably is connected with the second side of the second holding piece; The first side of the 4th holding piece is connected pivotly with the first side of the 3rd holding piece, and the second side of the 3rd holding piece removably is connected with the second side of the 4th holding piece.
Further, connecting plate is U-shaped.
Further, the first clamping part, the second clamping part and connecting plate are that insulating material is made.
According to another aspect of the present utility model; a kind of insulator is provided; comprise insulating cover and be used for the metal fixture of clamping cable; metal fixture is arranged on the top of insulating cover; cable passes metal fixture; insulator also comprises above-mentioned cable protection folder, and the first clamping part of cable protection folder and the second clamping part are positioned at respectively the both sides of metal fixture and are clipped in respectively and be positioned on the ambilateral cable of metal clip.
Connecting plate in the utility model is connected the first clamping part with the second clamping part.When using the cable protection folder, cable passes respectively the first clamping part and the second clamping part, connecting plate be used for bearing and balance the first clamping part and the second clamping part between active force.Owing to be provided with the first clamping part and the second clamping part, thereby enlarged the contact area of cable and insulator, thereby avoided because metal fixture and the contact area between the cable of insulator are little, and cause the problem of cable core fracture.Simultaneously, the folder of the cable protection in the utility model also has characteristics simple in structure, low cost of manufacture.
Description of drawings
The accompanying drawing that consists of the application's a part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 has schematically shown the structural representation of the cable protection folder in the utility model.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
As first aspect of the present utility model, provide a kind of cable protection folder.As shown in Figure 1, the cable protection folder comprises: the first clamping part 10 that is used for the clamping cable; The second clamping part 20 that is used for the clamping cable; Connecting plate 30, the first clamping parts 10 are connected with the second clamping part 20 by connecting plate 30.When using the cable protection folder, cable passes respectively the first clamping part 10 and the second clamping part 20, connecting plate 30 be used for bearing and balance the first clamping part 10 and the second clamping part 20 between active force.Owing to be provided with the first clamping part 10 and the second clamping part 20, and it is outside and core part that be stripped is positioned at the mid portion of the cable of the first clamping part 10 and the second clamping part 20 clampings that the first clamping part 10 and the second clamping part 20 all are clamped in the insulating barrier of cable, thereby effectively avoided core to be subject to the effect of shearing force, thereby the problem of core fracture occurs.Simultaneously, the folder of the cable protection in the utility model also has characteristics simple in structure, low cost of manufacture.
The first clamping part 10 in the utility model comprises the first holding piece 11 and second holding piece 12 that can pivot and be connected with the first holding piece 11, form the first grasping part between the first holding piece 11 and the second holding piece 12, the first holding piece 11 is fixedly connected with (please refer to Fig. 1) with connecting plate 30.Preferably, the first holding piece 11 comprises the first draw-in groove 13.Among the embodiment as shown in Figure 1, the first side of the second holding piece 12 is connected pivotly with the first side of the first holding piece 11, and the second side of the first holding piece 11 removably is connected with the second side of the second holding piece 12.Preferably, the second holding piece 12 is provided with three draw-in groove corresponding with the first draw-in groove 13, forms the first grasping part between the first draw-in groove 13 and the 3rd draw-in groove.The first holding piece 11 is connected with the second holding piece 12 by the first rotating shaft 14.Because the first holding piece 11 is connected pivotly with the second holding piece 12, thereby the first clamping part 10 has the first open position and the second off-position.When the first clamping part 10 was positioned at the first open position, cable entered in the first grasping part, then by making the first clamping part 10 be in the second off-position, cable was fixed in the first grasping part.Preferably, when the first clamping part 10 was positioned at the second off-position, the first holding piece 11 was fixing by screw and the second holding piece 12.Because the first clamping part 10 is screwed, even thereby the cable protection folder be in the rugged environment, the situation that also can not get loose, thus improved the dependability of cable protection folder.
The second clamping part 20 in the utility model comprises the 3rd holding piece 21 and the 4th holding piece 22 that can pivot and be connected with the 3rd holding piece 21, form the second grasping part between the 3rd holding piece 21 and the 4th holding piece 22, the 3rd holding piece 21 is fixedly connected with (please refer to Fig. 1) with connecting plate 30.Preferably, the 3rd holding piece 21 comprises the second draw-in groove 23.Among the embodiment as shown in Figure 1, the first side of the 4th holding piece 22 is connected pivotly with the first side of the 3rd holding piece 21, and the second side of the 3rd holding piece 21 removably is connected with the second side of the 4th holding piece 22.Preferably, the 4th holding piece 22 is provided with four draw-in groove corresponding with the second draw-in groove 23, forms the second grasping part between the second draw-in groove 23 and the 4th draw-in groove.The 3rd holding piece 21 is connected with the 4th holding piece 22 by the second rotating shaft 24.Because the 3rd holding piece 21 is connected pivotly with the 4th holding piece 22, thereby the second clamping part 20 has the 3rd open position and the 4th off-position.When the second clamping part 20 was positioned at the 3rd open position, cable entered in the second grasping part, then by making the second clamping part 20 be in the 4th off-position, cable was fixed in the second grasping part.Preferably, when the second clamping part 20 was positioned at the 4th off-position, the 3rd holding piece 21 was fixing by screw and the 4th holding piece 22.Because the second clamping part 20 is screwed, even thereby the cable protection folder be in the rugged environment, the situation that also can not get loose, thus improved the dependability of cable protection folder.
Preferably, the cross-sectional sizes of the first grasping part in the utility model increases along the direction away from connecting plate 30.Further, the cross-sectional sizes of the second grasping part increases along the direction away from connecting plate 30.Preferably, the end arc transition of the first draw-in groove 13, the second draw-in groove 23, the 3rd draw-in groove and the 4th draw-in groove.Because the cross-sectional sizes of the first grasping part increases along the direction away from connecting plate 30, thereby phenomenon that stress concentrates can not occur on away from the end face of the first clamping part 10, increase the bending radius of cable in cable, thereby reduced the possibility of cable broken string.Because the cross-sectional sizes of the second grasping part increases along the direction away from connecting plate 30, thereby the phenomenon that stress is concentrated can not occur in cable on away from the end face of the second clamping part 20, thereby reduced the possibility of cable broken string.
Preferably, connecting plate 30 comprises body and outwards gives prominence to the convex edge that arranges along the edge of body.Further, connecting plate 30 is U-shaped.Owing to be provided with the convex edge at body, thereby strengthened the structural strength of connecting plate 30, thereby make connecting plate 30 can bear the larger external force that cable applies, and prolonged the useful life of cable protection folder.Because connecting plate 30 is U-shaped, thereby make the cable protection folder can adapt to the profile of insulator, be used with existing insulator.
The first clamping part 10 in the utility model, the second clamping part 20 and connecting plate are that insulating material is made.Because cable protection folder is installed on the cable, thereby need to avoid the phenomenon such as arc discharge, avoid the electric current of cable is drained into the outside, thus the situation that causes other staff to get an electric shock.Preferably, the first clamping part 10, the second clamping part 20 and connecting plate are that plastics are made.
As second aspect of the present utility model, provide a kind of insulator.Insulator comprises insulating cover and is used for the metal fixture of clamping cable; metal fixture is arranged on the top of insulating cover; cable passes metal fixture; insulator also comprises above-mentioned cable protection folder, and the first clamping part 10 of cable protection folder and the second clamping part 20 lay respectively at the both sides of metal fixture and are clipped in respectively and be positioned on the ambilateral cable of metal clip.
When using the cable protection folder, cable passes the first grasping part, metal fixture and the second grasping part successively, and by screw that the first clamping part 10 and the second clamping part 20 is fixing respectively.Owing to be provided with the first clamping part 10 and the second clamping part 20, thereby increased the protection to cable.Because the both sides that the first clamping part 10 of cable protection folder and the second clamping part 20 lay respectively at metal fixture; and it is outside and core part that contact with metal fixture is positioned at the mid portion of the cable of the first clamping part 10 and the second clamping part 20 clampings that the first clamping part 10 and the second clamping part 20 all are clamped in the insulating barrier of cable; thereby the core part of cable not can because of with the contact area of the metal fixture too small effect that causes being subject to shearing force, thereby avoided the problem of core fracture.Owing to be provided with cable protection folder, thereby increased the contact area of cable and insulator, thereby overcome the existing shortcoming of insulator, prolonged useful life of cable, guaranteed power supply reliability.
Should also be noted that following problem when using the cable protection folder: 1 removes the outer object of metal fixture, such as insulating case, dirt etc.; 2 check whether disconnected strand, impaired of cable; 3 in time process impaired cable, process by " the on-the-spot operating standard of aerial power transmission line ".
In a preferred embodiment, behind the use cable protection folder, the contact area of insulator and cable is original 3.5 times, and bending radius is original 5 times, and all acts on the insulating barrier of cable, thereby cable is protected effectively.
The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (9)
1. a cable protection folder is characterized in that, comprising:
The first clamping part (10) that is used for the described cable of clamping;
The second clamping part (20) that is used for the described cable of clamping;
Connecting plate (30), described the first clamping part (10) is connected with described the second clamping part (20) by described connecting plate (30).
2. cable protection according to claim 1 presss from both sides; it is characterized in that; described the first clamping part (10) comprises the first holding piece (11) and second holding piece (12) that can pivot and be connected with described the first holding piece (11); form the first grasping part between described the first holding piece (11) and described the second holding piece (12), described the first holding piece (11) is fixedly connected with described connecting plate (30).
3. cable protection according to claim 2 presss from both sides; it is characterized in that; described the second clamping part (20) comprises the 3rd holding piece (21) and the 4th holding piece (22) that can pivot and be connected with described the 3rd holding piece (21); form the second grasping part between described the 3rd holding piece (21) and described the 4th holding piece (22), described the 3rd holding piece (21) is fixedly connected with described connecting plate (30).
4. cable protection folder according to claim 2 is characterized in that, the cross-sectional sizes of described the first grasping part increases along the direction away from described connecting plate (30).
5. cable protection folder according to claim 3 is characterized in that, the cross-sectional sizes of described the second grasping part increases along the direction away from described connecting plate (30).
6. cable protection according to claim 3 presss from both sides, it is characterized in that, the first side of described the second holding piece (12) is connected pivotly with the first side of described the first holding piece (11), and the second side of described the first holding piece (11) removably is connected with the second side of described the second holding piece (12); The first side of described the 4th holding piece (22) is connected pivotly with the first side of described the 3rd holding piece (21), and the second side of described the 3rd holding piece (21) removably is connected with the second side of described the 4th holding piece (22).
7. each described cable protection folder in 5 according to claim 1 is characterized in that described connecting plate (30) is U-shaped.
8. each described cable protection folder in 5 according to claim 1 is characterized in that described the first clamping part (10), described the second clamping part (20) and described connecting plate (30) are made for insulating material.
9. insulator; comprise insulating cover and be used for the metal fixture of clamping cable; described metal fixture is arranged on the top of described insulating cover; described cable passes described metal fixture; it is characterized in that; described insulator also comprises each described cable protection folder in the claim 1 to 8, and first clamping part (10) of described cable protection folder and the second clamping part (20) lay respectively at the both sides of described metal fixture and are clipped in respectively and be positioned on the ambilateral described cable of described metal clip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220604304 CN202887884U (en) | 2012-11-15 | 2012-11-15 | Cable protective clamp and insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220604304 CN202887884U (en) | 2012-11-15 | 2012-11-15 | Cable protective clamp and insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202887884U true CN202887884U (en) | 2013-04-17 |
Family
ID=48079283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220604304 Expired - Lifetime CN202887884U (en) | 2012-11-15 | 2012-11-15 | Cable protective clamp and insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202887884U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356096A (en) * | 2015-11-27 | 2016-02-24 | 国网北京市电力公司 | Cable protective clamp and insulator equipped with same |
-
2012
- 2012-11-15 CN CN 201220604304 patent/CN202887884U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356096A (en) * | 2015-11-27 | 2016-02-24 | 国网北京市电力公司 | Cable protective clamp and insulator equipped with same |
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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: 20130417 |
|
| CX01 | Expiry of patent term |