CN201138588Y - Composite cross arm insulator - Google Patents
Composite cross arm insulator Download PDFInfo
- Publication number
- CN201138588Y CN201138588Y CNU2008200546580U CN200820054658U CN201138588Y CN 201138588 Y CN201138588 Y CN 201138588Y CN U2008200546580 U CNU2008200546580 U CN U2008200546580U CN 200820054658 U CN200820054658 U CN 200820054658U CN 201138588 Y CN201138588 Y CN 201138588Y
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- steel
- rear end
- full skirt
- aluminium alloy
- sheath
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Abstract
The utility model relates to a compound crossarm insulator which includes an epoxy glass steel mandril, an aluminum alloy cap, a steel crossarm back end as well as an umbrella skirt and a protective cover; the front end of the epoxy glass steel mandril is integrated with the cylinder section of a steel cover by fine compression joint; while the solid section is integrated with the aluminum alloy cap by gravity die casting. The connection intensity is high, thus being capable of meeting the standard requirements for the stretching test of a compound crossarm insulator of national standard.
Description
Technical field
The utility model relates to a kind of compound cross arm insulator that is used on the 35 kilovolt racks, belongs to electrical network composite insulator technical field.
Background technology
High-voltage fence is in actual motion, and the cross arm insulator that level is installed is used and overflow extensively day, and its load that may bear is the combination of normal load, level load, compression load or tensile load.One of pilot project that stretching experiment must carry out when being defined as cross arm insulator and dispatching from the factory by new national standard (GB/T20142-2006), the bend test before having replaced.Compound cross arm insulator in the prior art is by expoxy glass steel core bar, aluminium alloy cap, steel cross-arm rear end and full skirt and sheath.Its expoxy glass steel core bar and aluminium alloy cap and being connected of steel cross-arm rear end are being threaded, or carry out bondingly with binding agent, and its bonding strength is limited, is difficult to satisfy the tension test requirement.
The utility model content
The purpose of this utility model is to provide a kind of improved compound cross arm insulator at the defective of prior art existence, improves its hot strength, can satisfy the compound cross arm insulator tension test of GB standard-required.
For reaching above-mentioned order ground, the utility model adopts following technical proposals:
A kind of compound cross arm insulator, comprise an expoxy glass steel core bar, aluminium alloy cap, steel cross-arm rear end and full skirt and sheath, it is characterized in that the front end of described expoxy glass steel core bar and the cylindrical body section of a steel bushing are integral with accurate crimping, and the solid shell of column of steel bushing and described aluminium alloy cap are integral with the gravity pressure cast.
The rear end of above-mentioned expoxy glass steel core bar and described steel cross-arm rear end are integral with accurate crimping.
Constitute when many annular grooves are arranged on solid section of above-mentioned steel bushing with the die casting of aluminium alloy cap gravity to embed and be connected.
Above-mentioned full skirt and sheath are injection moulding and wrap up the silicone rubber jacket and the silicon rubber full skirt of expoxy glass steel core bar on expoxy glass steel core bar middle part, and this silicone rubber jacket and silicon rubber full skirt are injected into one.
The above-mentioned full skirt and the front end of sheath extend to the inner face of aluminium alloy cap and wrap the part that steel bushing exposes the aluminium alloy cap, and the rear end extends to the inner of steel cross-arm rear end and wraps the inner end of steel cross-arm rear end.
On the above-mentioned steel bushing seal groove is arranged, on the aluminium alloy cap inner face seal groove is also arranged, with the leading section formation hermetically-sealed construction of described full skirt and sheath; On the inner of described steel cross-arm rear end seal groove is arranged, with the rearward end formation hermetically-sealed construction of described full skirt and sheath.
The utility model compared with prior art, have following conspicuous substantive distinguishing features and advantage: the front end of the expoxy glass steel core bar during this is practical is integral with accurate crimping and gravity pressure cast respectively by a steel bushing and aluminium alloy cap, and rear end and steel cross-arm rear end are integral with accurate crimping, the bonding strength height can satisfy the compound cross arm insulator tension test of GB standard-required.The sheath and the full skirt of full skirt and sheath are injected into one, and be simple for structure and firm.The two ends prolongation of full skirt and sheath wraps the inner end of steel bushing exposed portions serve and steel cross-arm rear end, and has seal groove to constitute hermetically-sealed construction, prevents that rainwater from immersing, and can increase the service life.
Description of drawings
Accompanying drawing is the structural representation of an embodiment of the present utility model.
Embodiment
A preferred embodiment accompanying drawings of the present utility model is as follows:
Referring to accompanying drawing, this compound cross arm insulator comprises an expoxy glass steel core bar 4, aluminium alloy cap 1, steel cross-arm rear end 5 and a full skirt and a sheath 3.The cylindrical body section of the front end of expoxy glass steel core bar 4 and a steel bushing 2 is integral with accurate crimping, and solid section of steel bushing 2 be integral with the gravity pressure cast with aluminium alloy cap 1; The inner of the rear end of expoxy glass steel core bar 4 and steel cross-arm rear end 5 is integral with accurate crimping.
Above-mentioned full skirt and sheath 3 are injection moulding and wrap up the silicone rubber jacket and the silicon rubber full skirt of expoxy glass steel core bar 4 on expoxy glass steel core bar 4 middle parts, and this silicone rubber jacket and silicon rubber full skirt are injected into one.
The front end of above-mentioned full skirt and sheath 3 extends to the inner face of aluminium alloy cap 1 and wraps the part that steel bushing 2 exposes aluminium alloy cap 1, and the rear end extends to the inner of steel cross-arm rear end 5 and wraps the inner end of steel cross-arm rear end 5.
On the above-mentioned steel bushing 2 seal groove 7 is arranged, on aluminium alloy cap 1 inner face seal groove 8 is also arranged, with the leading section formation hermetically-sealed construction of full skirt and sheath 3.On the inner of steel cross-arm rear end 5 seal groove 6 is arranged, constitute hermetically-sealed construction with full skirt and sheath 3 rearward end.
Claims (6)
1, a kind of compound cross arm insulator, comprise an expoxy glass steel core bar (4), an aluminium alloy cap (1), a steel cross-arm rear end (5) and full skirt and sheath (3), it is characterized in that: the cylindrical body section of the front end of described expoxy glass steel core bar (4) and a steel bushing (2) is integral with accurate crimping, and solid section of steel bushing (2) be integral with the gravity pressure cast with described aluminium alloy cap (1).
2, compound cross arm insulator according to claim 1 is characterized in that: the rear end of described expoxy glass steel core bar (4) and described steel cross-arm rear end (5) are integral with accurate crimping.
3, the described compound cross arm insulator of root a tree name claim 1 constitutes to embed when it is characterized in that on solid section of described steel bushing (2) many annular grooves (9) being arranged with aluminium alloy cap (1) gravity die casting and is connected.
4, the described compound cross arm insulator of root a tree name claim 1, it is characterized in that described insulation full skirt and sheath (3) are injection moulding and wrap up the silicone rubber jacket and the silicon rubber full skirt of expoxy glass steel core bar (4) on described expoxy glass steel core bar (4) middle part, this silicone rubber jacket and the injection of silicon rubber full skirt form one.
5, the described compound cross arm insulator of root a tree name claim 4, the front end that it is characterized in that described insulation full skirt and sheath (3) extends to the inner face of aluminium alloy cap (1) and wraps steel bushing (2) and exposes the part of aluminium alloy cap (1), the rear end extends to the inner of steel cross-arm rear end (5), and wraps the inner end of steel cross-arm rear end (5).
6, compound cross arm insulator according to claim 5 is characterized in that seal groove (7) is arranged on the described steel bushing (2), also has the seal groove (8) and the leading section of described full skirt and sheath (3) to constitute hermetically-sealed construction on aluminium alloy cap (1) inner face; Seal groove (6) is arranged, with the rearward end formation hermetically-sealed construction of described full skirt and sheath on the inner of described steel cross-arm rear end (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200546580U CN201138588Y (en) | 2008-01-14 | 2008-01-14 | Composite cross arm insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200546580U CN201138588Y (en) | 2008-01-14 | 2008-01-14 | Composite cross arm insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201138588Y true CN201138588Y (en) | 2008-10-22 |
Family
ID=40039269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200546580U Expired - Lifetime CN201138588Y (en) | 2008-01-14 | 2008-01-14 | Composite cross arm insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201138588Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102479584A (en) * | 2010-11-28 | 2012-05-30 | 河南省电力公司安阳供电公司 | Glass fiber reinforced plastic stretching insulator and connecting device for connection of glass fiber reinforced plastic stretching insulator and hardware fitting |
| CN110017052A (en) * | 2019-04-30 | 2019-07-16 | 河北盛达电力器材有限公司 | A kind of compound cross-arm |
-
2008
- 2008-01-14 CN CNU2008200546580U patent/CN201138588Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102479584A (en) * | 2010-11-28 | 2012-05-30 | 河南省电力公司安阳供电公司 | Glass fiber reinforced plastic stretching insulator and connecting device for connection of glass fiber reinforced plastic stretching insulator and hardware fitting |
| CN102479584B (en) * | 2010-11-28 | 2013-11-27 | 河南省电力公司安阳供电公司 | Glass fiber reinforced plastic stretching insulator and connecting device for connection of glass fiber reinforced plastic stretching insulator and hardware fitting |
| CN110017052A (en) * | 2019-04-30 | 2019-07-16 | 河北盛达电力器材有限公司 | A kind of compound cross-arm |
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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: 20081022 |
|
| CX01 | Expiry of patent term |