CN210779825U - Device for replacing whole string of tension insulators at cross arm end and wire end of direct-current transmission line - Google Patents
Device for replacing whole string of tension insulators at cross arm end and wire end of direct-current transmission line Download PDFInfo
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- CN210779825U CN210779825U CN201922177891.9U CN201922177891U CN210779825U CN 210779825 U CN210779825 U CN 210779825U CN 201922177891 U CN201922177891 U CN 201922177891U CN 210779825 U CN210779825 U CN 210779825U
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Abstract
The utility model discloses a device that whole cluster of direct current transmission line cross arm end and wire end strain insulator was changed aims at providing one kind and can improve the device of operating efficiency. The device comprises a cross arm end bracket and a wire end bracket; the cross arm end support comprises a first support body, a first pulley and two first inclined struts; the first support body comprises an H-shaped first body, connecting parts connected to the upper ends of two sides of the first body, two first support plates which are vertically arranged and symmetrically fixedly connected to the upper ends of the connecting parts, and a plurality of first reinforcing bolts for connecting the two first support plates; two sides of the lower end of the first body are provided with first supporting parts extending towards the outer side of the first body, and the first supporting parts are provided with first bolts used for connecting clamps at the cross arm ends of the line tower; the first pulley is positioned between the two first supporting plates and is connected with the two first supporting plates through a first rotating shaft; and the two first inclined struts are respectively positioned on two sides of the first body and are respectively connected with two sides of the connecting part through the first screw rods.
Description
Technical Field
The utility model belongs to the technical field of the electric wire netting is maintained multiplexer utensil technique and specifically relates to a device that whole cluster of direct current transmission line cross arm end and wire end strain insulator was changed is related to.
Background
With the rapid development of the power industry, the long-distance and large-capacity direct-current transmission technology becomes the leading-edge technology of the power grid. At present, a plurality of direct current extra-high voltage transmission lines are put into operation formally. In the daily operation and maintenance process, the glass insulator is self-exploded, and the zero value of the porcelain insulator is a common defect, but the direct-current line insulator has the particularity of a zinc ring, and the direct-current transmission line is difficult to arrange power failure maintenance.
Although a conventional fixture is used for replacing a tool, the defects of high labor intensity of operators, more requirements of the operators, high requirement on skill level of the operators and the like still exist in the actual process, and in order to meet the requirement of hot-line work development of a high-voltage direct-current transmission line, it is very necessary to design a set of auxiliary tools for replacing the fixture for the tension insulator of the direct-current transmission line and the matched tool thereof in a charged mode aiming at the characteristics of tension insulators of the high-voltage direct-current transmission line and the whole string of single-piece replacement fixture for the tension insulators of the +/-500 kV transmission line disclosed by the Chinese patent publication No. 209526429U.
The main reason is that when the ground potential operators and the equipotential operators work aloft, the following working conditions exist:
(1) when the ground potential operator works aloft, the operator needs to bend over to release the first piece of the old insulator string; (2) when the ground potential operator works aloft, the operator needs to bend over to install a first insulator string; (3) when the equipotential operating personnel works at high altitude, the equipotential operating personnel need to bend over to get rid of the last insulator string of the old insulator string; (4) when the equipotential operating personnel works at high altitude, the operator needs to bend over to install the last insulator string.
During operation under the working conditions, because the original hoisting tackle is low in installation height, an operator needs to bend over to lift and move, the weight of the whole insulator string of 500kV is about 1000kg, even if the insulator supporting frame is arranged, the first insulator string and the last insulator string are lifted and pulled by a single person aloft, and the working strength is high. The whole insulator replacement efficiency is greatly influenced, and the replacement operation time is long.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a purpose aims at overcoming the not enough of prior art existence, provides a device that can improve the whole cluster of change of direct current transmission line cross arm end and wire end strain insulator of changing operating efficiency.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
the device for replacing the whole string of the tension insulators at the cross arm end and the wire end of the direct-current transmission line comprises a cross arm end bracket connected with a wire tower cross arm end clamp during use and a wire end bracket connected with the wire tower wire end clamp during use; the cross arm end support comprises a first support body, a first pulley and two first inclined struts; the first support body comprises an H-shaped first body, connecting parts connected to the upper ends of two sides of the first body, two first support plates which are vertically arranged and symmetrically fixedly connected to the upper ends of the connecting parts, and a plurality of first reinforcing bolts for connecting the two first support plates; two sides of the lower end of the first body are provided with first supporting parts extending towards the outer side of the first body, and the first supporting parts are provided with first bolts used for connecting clamps at the cross arm ends of the line tower; the first pulley is positioned between the two first supporting plates and is connected with the two first supporting plates through a first rotating shaft; the two first inclined struts are respectively positioned on two sides of the first body and are respectively connected with two sides of the connecting part through first screw rods; the lower end of the first inclined strut is provided with a second bolt connected with a line tower cross arm end clamp;
the wire end bracket comprises a second bracket body, a second pulley and two second inclined struts; the second support body comprises a strip-shaped second body, two second support plates which are vertically arranged and symmetrically fixedly connected to the upper end of the second body, and a plurality of second reinforcing bolts for connecting the two second support plates; two sides of the lower end of the second body are provided with second supporting parts extending towards the outer side of the second body, and third bolts used for connecting the line tower lead end clamps are arranged on the second supporting parts; the second pulley is positioned between the two second supporting plates and is connected with the two second supporting plates through a second rotating shaft; the two second inclined struts are respectively positioned on two sides of the second body and are respectively connected with two sides of the second connecting part through second screw rods; the lower end of the first inclined strut is provided with a fourth bolt connected with a line tower cross arm end clamp;
preferably, the cross arm end bracket further includes a first rib plate connecting the first body and the first support portion.
Preferably, the wire end bracket further includes a second rib plate connecting the second body and the second support portion.
Preferably, the second body is provided with a lightening hole.
Preferably, the first body, the connecting part and the first support plate are a single piece.
Preferably, the second body and the second support plate are a single piece.
Compared with the prior art, the utility model has the advantages of as follows:
the utility model discloses can make the whole string efficiency of current change direct current transmission line strain insulator obtain great promotion, simplify the operation step, reduce the operating time that the whole string of strain insulator was changed, reduce the electric wire netting operation risk.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of the middle cross arm end bracket of the present invention.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a schematic structural view of the middle wire end bracket of the present invention.
Fig. 4 is a left side view of fig. 1.
Fig. 5 is a schematic diagram of the connection of the cross arm end bracket and the cross arm end clamp of the existing line tower.
Fig. 6 is a schematic view of the connection of the lead end bracket to the lead end clamp of the conventional pylon.
Fig. 7 is a perspective view of a cross arm end bracket.
Fig. 8 is a perspective view of a lead end bracket.
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 any creative effort belong to the protection scope of the present invention. In the following description, for the sake of clarity of illustrating the structure and operation of the present invention, reference will be made to the accompanying drawings by means of directional terms, but the terms "front", "rear", "left", "right", "up", "down", etc. should be construed as convenient terms and not as limitative terms.
The apparatus for replacing a whole string of tension insulators at the cross arm end and the wire end of a direct current transmission line shown in fig. 1-8 comprises a cross arm end bracket connected with a line tower cross arm end fixture 30 when in use and a wire end bracket connected with a line tower wire end fixture 40 when in use; the cross arm end support comprises a first support body 1, a first pulley 2 and two first inclined struts 3; the first support body 1 comprises an H-shaped first body 4, connecting parts 5 connected to the upper ends of two sides of the first body 4, two first support plates 6 which are vertically arranged and symmetrically connected to the upper ends of the connecting parts 5, and two first reinforcing bolts 7 for connecting the two first support plates 6, wherein the two first reinforcing bolts 7 in the embodiment are positioned at the two opposite far ends of the first support plates 6; two sides of the lower end of the first body 4 are provided with first supporting parts 8 extending towards the outer side of the first body, and the first supporting parts 8 are provided with first bolts 9 used for connecting the line tower cross arm end clamps 30; the first pulley 2 is positioned between the two first supporting plates 6 and is connected with the two first supporting plates 6 through a first rotating shaft 10; the two first inclined struts 3 are respectively positioned on two sides of the first body 4 and are respectively connected with two sides of the connecting part 5 through first screw rods 11, and the angle of the first inclined struts can be adjusted by loosening the first screw rods; the lower end of the first inclined strut 3 is provided with a second bolt 12 connected with a line tower cross arm end clamp 30;
the wire end bracket comprises a second bracket body 13, a second pulley 14 and two second inclined struts 15; the second bracket body 13 comprises a strip-shaped second body 16, two second supporting plates 17 which are vertically arranged and symmetrically fixedly connected to the upper end of the second body 16, and two second reinforcing bolts 18 which are connected with the two second supporting plates 17, wherein the two second reinforcing bolts 7 in the embodiment are positioned at the two opposite far ends of the second supporting plates; second supporting parts 19 extending towards the outer sides of the lower ends of the second bodies 16 are arranged on two sides of the lower ends of the second bodies, and third bolts 20 used for connecting a line tower lead end fixture 40 are arranged on the second supporting parts 19; the second pulley 14 is located between the two second support plates 17 and connected with the two second support plates 17 through a second rotating shaft 21; the two second inclined struts 15 are respectively positioned on two sides of the second body 16 and are respectively connected with two sides of the second connecting part 5 through second screws 22; the lower end of the first inclined strut 3 is provided with a fourth bolt 24 connected with a line tower cross arm end clamp 40;
in this embodiment, the cross arm end bracket further includes a first rib 25 connecting the first body 4 and the first supporting portion 8, so as to enhance the connection strength between the first body 4 and the first supporting portion 8. The wire end bracket further comprises a second rib 26 connecting the second body 16 and the second support part 19. To reinforce the connection strength between the second body 16 and the second support portion 19.
In this embodiment, the second body 16 is provided with a lightening hole 23 to reduce the self weight, so as to facilitate the operation and use.
In this embodiment, the first body 4, the connecting portion 5 and the first support plate 6 are integrally formed. The second body 16 and the second support plate 17 are integrally formed.
The utility model discloses during the use, installation wire end support, cross arm end support on current fixture are changing whole cluster insulator in-process, can carry out the hoist and mount of insulator through wire end support, cross arm end support, and the operation personnel need not to bend the operation to the insulator, need not to carry to the whole cluster of insulator and carry. The ground electrician can lift the insulator to the installation position, and the labor intensity and the technical difficulty of operators are greatly reduced. The utility model discloses can also reduce the instrument that carries before equipotential personnel and middle potential personnel get into the potential, reduce intensity of labour.
The whole string of insulators to be replaced is hung downwards, after a wire end support and a cross arm end support are firmly installed and insulating ropes are installed, the insulators are tied to the second insulators on the wire side and the second insulators on the cross arm side respectively, the insulators on the wire side are taken off firstly, and the whole string of insulators is slowly changed from a horizontal state to a naturally drooping state by matching with an insulating bottle supporting frame under the control of the insulating ropes on the cross arm end support. And then the R pin of the insulator on the side of the cross arm is taken out, the insulating rope of the support on the side of the cross arm is stressed to slightly lift the whole string of the insulator to a state that the insulator and the ball head hanging ring are not stressed, and then the whole string of the insulator is withdrawn. At the moment, the insulating ropes of the cross arm side and the wire side bracket are simultaneously stressed, so that the whole insulator string is stably placed on the ground.
The whole string of insulators to be replaced is lifted to the installation position stably under the action of the insulating ropes of the cross arm end support and the wire end support, the whole string of insulators can be lifted to a position slightly higher than the installation position by 3-5 cm due to the fact that the cross arm end support and the wire end support are additionally arranged, the whole string of insulators can be connected with the ball head hanging ring on the cross arm side conveniently, and the R pin is additionally arranged. And then, the whole insulator string is restored to a natural drooping state, the whole insulator string is pulled to a lead end mounting position by an insulating bottle support matched with an insulating rope of a lead end support, and at the moment, the bowl head hanging ring and the whole insulator string are connected by an equipotential electrician and an M pin is additionally arranged.
If the cross arm end support and the wire end support are matched to be used as a transmission tool, an electrodeless insulating rope can be additionally arranged on the first pulley and the second pulley.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. It should be understood by those skilled in the art that any modification, equivalent replacement, or improvement made to the technical solutions or parts of technical features described in the above embodiments can be included in the scope of the present invention within the spirit and principle of the present invention.
Claims (6)
1. Direct current transmission line cross arm end and the whole device that changes of conductor end strain insulator cluster, its characterized in that: the device comprises a cross arm end bracket connected with a wire tower cross arm end clamp in use and a wire end bracket connected with the wire tower wire end clamp in use; the cross arm end support comprises a first support body, a first pulley and two first inclined struts; the first support body comprises an H-shaped first body, connecting parts connected to the upper ends of two sides of the first body, two first support plates which are vertically arranged and symmetrically fixedly connected to the upper ends of the connecting parts, and a plurality of first reinforcing bolts for connecting the two first support plates; two sides of the lower end of the first body are provided with first supporting parts extending towards the outer side of the first body, and the first supporting parts are provided with first bolts used for connecting clamps at the cross arm ends of the line tower; the first pulley is positioned between the two first supporting plates and is connected with the two first supporting plates through a first rotating shaft; the two first inclined struts are respectively positioned on two sides of the first body and are respectively connected with two sides of the connecting part through first screw rods; the lower end of the first inclined strut is provided with a second bolt connected with a line tower cross arm end clamp;
the wire end bracket comprises a second bracket body, a second pulley and two second inclined struts; the second support body comprises a strip-shaped second body, two second support plates which are vertically arranged and symmetrically fixedly connected to the upper end of the second body, and a plurality of second reinforcing bolts for connecting the two second support plates; two sides of the lower end of the second body are provided with second supporting parts extending towards the outer side of the second body, and third bolts used for connecting the line tower lead end clamps are arranged on the second supporting parts; the second pulley is positioned between the two second supporting plates and is connected with the two second supporting plates through a second rotating shaft; the two second inclined struts are respectively positioned on two sides of the second body and are respectively connected with two sides of the second connecting part through second screw rods; and a fourth bolt connected with the line tower cross arm end fixture is arranged at the lower end of the first inclined strut.
2. The device for replacing the whole string of tension insulators at the cross arm end and the wire end of the direct current transmission line according to claim 1, is characterized in that: the cross arm end support further comprises a first rib plate connected with the first body and the first supporting part.
3. The device of claim 1 or 2 for replacing the whole string of tension insulators at the cross arm end and the wire end of the direct current transmission line, which is characterized in that: the wire end bracket further comprises a second rib plate connected with the second body and the second supporting part.
4. The device of claim 1 or 2 for replacing the whole string of tension insulators at the cross arm end and the wire end of the direct current transmission line, which is characterized in that: the second body is provided with a lightening hole.
5. The device of claim 1 or 2 for replacing the whole string of tension insulators at the cross arm end and the wire end of the direct current transmission line, which is characterized in that: the first body, the connecting part and the first supporting plate are integrated.
6. The device of claim 1 or 2 for replacing the whole string of tension insulators at the cross arm end and the wire end of the direct current transmission line, which is characterized in that: the second body and the second support plate are integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922177891.9U CN210779825U (en) | 2019-12-09 | 2019-12-09 | Device for replacing whole string of tension insulators at cross arm end and wire end of direct-current transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922177891.9U CN210779825U (en) | 2019-12-09 | 2019-12-09 | Device for replacing whole string of tension insulators at cross arm end and wire end of direct-current transmission line |
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| CN210779825U true CN210779825U (en) | 2020-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922177891.9U Active CN210779825U (en) | 2019-12-09 | 2019-12-09 | Device for replacing whole string of tension insulators at cross arm end and wire end of direct-current transmission line |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110768165A (en) * | 2019-12-09 | 2020-02-07 | 云南电网有限责任公司昆明供电局 | Device for replacing whole string of tension insulators at cross arm end and wire end of direct-current transmission line |
| CN113629578A (en) * | 2021-09-02 | 2021-11-09 | 国网山东省电力公司烟台供电公司 | Wire lifter for replacing whole string in high-voltage transmission line |
-
2019
- 2019-12-09 CN CN201922177891.9U patent/CN210779825U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110768165A (en) * | 2019-12-09 | 2020-02-07 | 云南电网有限责任公司昆明供电局 | Device for replacing whole string of tension insulators at cross arm end and wire end of direct-current transmission line |
| CN113629578A (en) * | 2021-09-02 | 2021-11-09 | 国网山东省电力公司烟台供电公司 | Wire lifter for replacing whole string in high-voltage transmission line |
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