CN210224785U - Fixture for replacing 220kV straight line single-string cross arm side insulator and hardware fitting by ground potential operation method - Google Patents
Fixture for replacing 220kV straight line single-string cross arm side insulator and hardware fitting by ground potential operation method Download PDFInfo
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- CN210224785U CN210224785U CN201921547251.6U CN201921547251U CN210224785U CN 210224785 U CN210224785 U CN 210224785U CN 201921547251 U CN201921547251 U CN 201921547251U CN 210224785 U CN210224785 U CN 210224785U
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Abstract
The utility model relates to a transmission network live working technical field, specifically speaking relates to earth potential operation method is changed 220kV straight line single cluster cross arm side insulator, gold utensil fixture. The insulator replacement device comprises a plurality of insulators, wherein the top insulator is to be replaced, a hardware fitting is installed at the upper end of the top insulator, a cross arm fixture is installed at one end of the insulator, and a closed fixture is installed on the outer wall of the insulator at the bottom of the insulator to be replaced. The 220kV straight line single-string cross arm side insulator and the hardware fixture are replaced by the ground potential operation method, the overall structure is reasonable in design, the fixture can be selectively combined and used according to voltage levels and cross arm arrangement modes, the adopted tools are large in types and quantity, heavy and not easy to operate, the combination of the lead screw and the closed type clamp is utilized, the fixture is universal in live-line maintenance and power failure maintenance operation, and reliable technical support is provided for maintenance of the straight line single-string cross arm side insulator and the hardware fixture of the power transmission line.
Description
Technical Field
The utility model relates to the technical field, specifically speaking relates to earth potential operation method is changed 220kV straight line single cluster cross arm side insulator, gold utensil fixture.
Background
At present, in the process of replacing 220kV straight line single-string cross arm side insulators and hardware fittings in a charged mode, an equipotential operation mode is generally needed. Equipotential operating personnel are exposed in a strong electric field for a long time, so that personal safety risks of the operating personnel are increased; the equipotential operation method has the disadvantages of various and heavy types and quantity of tools, difficult operation, high labor intensity of personnel and low operation efficiency.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a 220kV straight line single cluster cross arm side insulator, gold utensil fixture are changed to the earth potential operation method to solve certain or some defect that proposes in the above-mentioned background art.
In order to realize the above-mentioned purpose, the utility model provides a 220kV straight line single cluster cross arm side insulator, gold utensil fixture are changed to ground potential operation method, including a plurality of insulators, wherein the insulator at top is for waiting to change the insulator, and installs the gold utensil on the insulator at top, and the cross arm fixture is installed to the one end of insulator, and the insulator outer wall of waiting to change the insulator bottom installs closed fixture, install the lead screw between closed fixture and the cross arm fixture both wings, the lead screw passes cross arm fixture, just the lead screw outer wall is close to cross arm fixture top one side and installs the swivel nut, swivel nut and lead screw threaded connection.
Preferably, the cross arm clamp is internally provided with an insert, the insert is matched with the hardware fitting in size, and avoidance grooves are symmetrically formed in two sides of the insert.
Preferably, a stabilizing screw is mounted at the top of the cross arm clamp and sequentially penetrates through the cross arm clamp and the insert.
Preferably, the outer wall of the rotating sleeve is sleeved with a wrench for driving the rotating sleeve to rotate.
Preferably, the topmost insulator is mounted at the bottom of the hardware through a hanging ring.
Compared with the prior art, the beneficial effects of the utility model are that:
1. in the replacement of the 220kV linear single-string cross arm side insulator and the hardware fixture by the ground potential operation method, the overall structure is reasonable in design, the insulator and the hardware fixture can be selectively combined for use according to voltage classes and cross arm arrangement modes, the insulator and the hardware fixture are strong in universality and simple to assemble and disassemble, the installation, load transfer, replacement and the like can be completed by only one person by a cross arm side electrician, the manpower is reduced, and the problems that in the traditional power transmission line linear single-string cross arm side insulator and hardware fixture overhauling work, tools and appliances used in live-line overhauling and power failure overhauling work are not universal, tools and appliances under different voltage classes and different sub cross arm arrangement modes are not universal, the types and the number of the adopted tools are large and heavy.
2. In the clamp for replacing the 220kV linear single-string cross arm side insulator and the hardware fitting by the ground potential operation method, the first insulator on the cross arm side is directly replaced by combining the lead screw and the closed clamp, the clamp is universal in live overhaul and power failure overhaul operation, the use types and the number of operation tools are reduced, the operation time of carrying, detecting and installing the tools can be reduced to the maximum extent, the human-machine effect is improved to the maximum extent, the operation time is shortened, the labor intensity of operation personnel is reduced, the operation risk is reduced, the operation efficiency is improved, and reliable technical support hardware fittings are provided for the linear single-string cross arm side insulator and the overhaul of the power transmission line.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the mounting structure of the cross arm clamp and the closed clamp of the present invention;
FIG. 3 is a schematic structural view of the cross arm clamp of the present invention;
fig. 4 is a schematic view of the insulator structure of the present invention.
In the figure: 1. a stabilizing screw; 2. a screw rod; 3. an insert; 4. a cross arm clamp; 5. a rotating sleeve; 6. an avoidance groove; 7. a closed fixture; 8. an insulator; 9. provided is a hardware fitting.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Referring to fig. 1-4, the present invention provides a technical solution:
220kV straight line single cluster cross arm side insulator is changed to electric potential operation method, the gold utensil fixture, including a plurality of insulators 8, wherein insulator 8 at top is for waiting to change the insulator, and gold utensil 9 is installed to insulator 8 upper end at top, cross arm fixture 4 is installed to the one end of insulator 8, wait to change the insulator 8 outer wall of insulator bottom and install closed fixture 7, cross arm fixture 4 and closed fixture 7 all adopt LC4 aluminum alloy material processing, its material structure is hard, difficult buckling, and structural strong, install lead screw 2 between closed fixture 7 and the 4 wings of cross arm fixture, lead screw 2 passes cross arm fixture 4, and the outer wall of lead screw 2 is close to cross arm fixture 4 top one side and installs swivel mount 5, swivel mount 5 and lead screw 2 threaded connection, tighten up both sides lead screw 2 simultaneously through swivel mount 5, ensure that both sides atress is even.
Further, the internally mounted of cross arm fixture 4 has insert 3, inserts 3 and fitting 9's size looks adaptation, and 3 bilateral symmetry of inserting have been seted up and have been dodged groove 6, and insert 3 and dodge groove 6 according to the different choices of tower material, the commonality is strong and install and remove simply.
Specifically, the top of cross arm fixture 4 is installed firm screw 1, and firm screw 1 passes cross arm fixture 4 and insert 3 in proper order, through turning round firm screw 1, ensures that cross arm fixture 4 is connected the contact closely with the tower material.
In addition, the outer wall cover of swivel mount 5 is equipped with and is used for driving 5 pivoted spanners of swivel mount, blocks at 5 outer walls of swivel mount through the spanner, can drive the rotation of swivel mount 5 through wrenching the spanner.
In addition, the insulator 8 at the top is installed at the bottom of the hardware fitting 9 through the hanging ring, after the insulator 8 at the top is replaced, the insulator 8 is detached from the hanging ring, and then a new insulator 8 is installed at the hanging ring, so that the replacement of the insulator 8 is facilitated.
The utility model discloses a 220kV straight line single cluster cross arm side insulator, gold utensil fixture work step are changed to the current potential operation method as follows:
1) connecting a screw rod 2 into a cross arm clamp 4 to ensure that the screw rod 2 is firmly connected with the cross arm clamp 4, selecting an insert 3 and an avoidance groove 6 according to different tower materials to ensure that the cross arm clamp 4 is tightly connected with the tower materials, screwing a stabilizing screw 1 and ensuring that the connection contact is tight;
2) the installation closed fixture 7 is connected with the insulator 8 to ensure close contact;
3) connecting the screw rods 2 with a closed fixture 7, and simultaneously tightening the screw rods 2 on two sides by using a rotary sleeve 5 to ensure that the two sides are uniformly stressed;
4) after the insulator 8 and the hardware 9 are loosened, the insulator 8 and the hardware 9 are replaced.
It is worth to be noted that the statistical analysis is performed on the cross arm models, the cross arm arrangement modes, the sub-cross arm distances, the cross arm wire clamp lengths and the maximum vertical span distances on the line under different cross arm models, which are commonly used on the transmission line with the straight single-string structure, so as to calculate the maximum force born by the insulators in different voltage classes and different cross arm arrangement modes. Through statistical analysis of data, when the cross arm side insulator is replaced, the load is directly transferred to the tower head end without replacing the insulator string. The method specifically comprises the following steps: the operation personnel arrive cross arm side operation position, adopt cross arm fixture 4, directly be connected with current monolithic insulator card through closed fixture 7, receive and release through cross arm side lead screw 2, realize shifting the load to the 8 strings of tower head end insulator, make cross arm side insulator 8 and gold utensil 9 lax, and then accomplish the maintenance operation, this maintenance method is used for having a power failure when overhauing, can need not to reuse heavy hand plate calabash and wire rope insulation arm-tie etc. this method has fully remain current monolithic insulator fixture, need not to increase multiplexer utensil again.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. 220kV straight line single cluster cross arm side insulator, gold utensil fixture are changed to ground potential operation method, including a plurality of insulators (8), wherein insulator (8) at top are for waiting to change the insulator, and install gold utensil (9), its characterized in that on insulator (8) at top: cross arm fixture (4) are installed to the one end of insulator (8), treat that insulator (8) outer wall of changing the insulator bottom installs closed fixture (7), install lead screw (2) between closed fixture (7) and cross arm fixture (4) both wings, lead screw (2) pass cross arm fixture (4), just lead screw (2) outer wall is close to cross arm fixture (4) top one side and installs swivel sleeve (5), swivel sleeve (5) and lead screw (2) threaded connection.
2. The ground potential operation method of claim 1 for replacing 220kV straight single-string cross arm side insulator and hardware fitting clamp, wherein: the inside mounting of cross arm fixture (4) has insert (3), the size looks adaptation of insert (3) and gold utensil (9), insert (3) bilateral symmetry has been seted up and has been dodged groove (6).
3. The ground potential operation method of claim 2, wherein the 220kV straight line single-string cross arm side insulator and the hardware clamp are replaced by the ground potential operation method, and the method is characterized in that: the top of cross arm fixture (4) is installed firm screw (1), firm screw (1) passes cross arm fixture (4) and insert (3) in proper order.
4. The ground potential operation method of claim 1 for replacing 220kV straight single-string cross arm side insulator and hardware fitting clamp, wherein: the outer wall cover of swivel sleeve (5) is equipped with and is used for driving swivel sleeve (5) pivoted spanner.
5. The ground potential operation method of claim 2, wherein the 220kV straight line single-string cross arm side insulator and the hardware clamp are replaced by the ground potential operation method, and the method is characterized in that: the top insulator (8) is mounted at the bottom of the hardware fitting (9) through a hanging ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921547251.6U CN210224785U (en) | 2019-09-18 | 2019-09-18 | Fixture for replacing 220kV straight line single-string cross arm side insulator and hardware fitting by ground potential operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921547251.6U CN210224785U (en) | 2019-09-18 | 2019-09-18 | Fixture for replacing 220kV straight line single-string cross arm side insulator and hardware fitting by ground potential operation method |
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| Publication Number | Publication Date |
|---|---|
| CN210224785U true CN210224785U (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921547251.6U Active CN210224785U (en) | 2019-09-18 | 2019-09-18 | Fixture for replacing 220kV straight line single-string cross arm side insulator and hardware fitting by ground potential operation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113948998A (en) * | 2021-09-26 | 2022-01-18 | 国网辽宁省电力有限公司抚顺供电公司 | Tool for replacing cross arm measuring and wire measuring porcelain insulator |
-
2019
- 2019-09-18 CN CN201921547251.6U patent/CN210224785U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113948998A (en) * | 2021-09-26 | 2022-01-18 | 国网辽宁省电力有限公司抚顺供电公司 | Tool for replacing cross arm measuring and wire measuring porcelain insulator |
| CN113948998B (en) * | 2021-09-26 | 2023-03-28 | 国网辽宁省电力有限公司抚顺供电公司 | Tool for replacing porcelain insulator on cross arm side and wire side |
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