CN112366590B - Replacing tool and replacing method for replacing horizontally-arranged strain pole cross arm in electrified mode - Google Patents
Replacing tool and replacing method for replacing horizontally-arranged strain pole cross arm in electrified mode Download PDFInfo
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- CN112366590B CN112366590B CN202011191281.5A CN202011191281A CN112366590B CN 112366590 B CN112366590 B CN 112366590B CN 202011191281 A CN202011191281 A CN 202011191281A CN 112366590 B CN112366590 B CN 112366590B
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000008859 change Effects 0.000 claims abstract description 17
- 239000012211 strain insulator Substances 0.000 claims abstract description 17
- 239000012212 insulator Substances 0.000 claims description 74
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 description 7
- 238000009413 insulation Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 5
- 239000004020 conductor Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000016507 interphase Effects 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 101100272667 Xenopus laevis ripply2.2 gene Proteins 0.000 description 1
- 230000002547 anomalous effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/24—Cross arms
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Abstract
The utility model discloses a replacing tool and a replacing method for replacing horizontally arranged strain pole cross arms in a charged manner, wherein the replacing tool comprises a horizontal insulating cross arm and a vertical insulating cross arm, and the vertical insulating cross arms are sequentially arranged on the horizontal insulating cross arm according to a set distance to realize horizontal and horizontal arrangement; the lower extreme of every vertical insulating cross arm sets up two at least intervals and sets for even board with adjustable of distance, even board with adjustable is used for being connected link plate fixed connection with strain insulator. The horizontal insulating cross arm of change instrument is used for providing the horizontal direction and supports the framework, and vertical insulating cross arm is as main part load-carrying structure, and the link plate is connected to the strain insulator on every phase line way respectively to vertical insulating cross arm for after fixed strain insulator of this instrument and circuit, can keep the safe distance between the strain insulator between the three-phase and the circuit.
Description
Technical Field
The utility model relates to a relevant technical field of power equipment, specific saying so relates to a change instrument and change method of changing horizontal arrangement strain insulator pole cross arm with electricity.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
At present, the cross arm or insulator string of a 10kV triangular tension pole has defects, and the commonly used operation method for replacing the tension insulator string and the cross arm in an electrified way is as follows: installing a new strain cross arm, a hardware fitting and an insulator string at a proper position above the original cross arm, completing the wire transfer work after insulation shielding, then removing the old insulator string and the cross arm, and completing the replacement work of the cross arm or the insulator string.
The inventor finds that when a strain pole cross arm or an insulator string arranged horizontally at 10kV has defects, if a new cross arm is additionally arranged above the original cross arm and is used as a force-bearing transferring tool for phase-by-phase transferring, enough interphase and phase-to-phase safety distance cannot be ensured, the danger coefficient is extremely high, and the space above the original cross arm is insufficient. Therefore, the operation is often performed in a power failure mode under the condition, so that the problems of wide power failure range, low operation efficiency and the like in work are caused, and the normal power supply of a client is influenced.
The scheme for replacing the cross arm and the insulator in the traditional mode is as follows:
the first scheme is as follows: and replacing the strain insulator string and the cross arm in an electrified way. After the working position is reached, the operator insulates and shields the live part and the grounding body which are possibly touched in the working process, installs a new strain cross arm, a hardware fitting and an insulator at a proper position above the original cross arm and insulates and shields the new strain cross arm, the hardware fitting and the insulator. After the preparation work before the wire transfer is finished, the connection between the wire and the original strain clamp is removed, the wire is hung on a new insulator string, the insulation tightener is slowly loosened to stress the new insulator string, whether each stress is normal or not is checked, the insulation shielding is recovered, other two-phase wires are hung on the new insulator string according to the same method, the insulation tightener is loosened, and the insulation tightener and a backup protection rope are removed after each stress is checked to be normal. And finally, removing the old insulator and the cross arm. The method has the defects that the requirement on the space distance above the original cross arm is extremely high, the danger coefficient is higher for the horizontally arranged electric poles, and the method is not used when the work is generally carried out.
Scheme II: and replacing the tension rod cross arm in a power failure mode. The power failure mode is a method for replacing a tension rod cross arm commonly used at present, namely a new cross arm is fixed above or below an original cross arm, a tension insulator string is temporarily replaced by a wire tightening tool to partially bear the force, the positions of the tension insulator strings are transferred to the new cross arm one by one, and after the transfer is finished and the tension insulator strings are firmly checked, the original cross arm is dismantled. The disadvantage of this solution is that it requires power failure to work, affecting the customer's power supply.
The third scheme is as follows: and the linear rod cross arm and the insulator are replaced in a live-line mode. The principle that the cross arm and the insulator replace facilities to transfer the stress of the overhead line is adopted, namely, two cranes or small suspension arms of an insulating bucket arm vehicle are respectively fixed with two side phase conductors which are subjected to insulation measures and bear the force, after a binding wire of the linear insulator is removed, the transmission lines on two sides are lifted to a proper height, the linear cross arm and the insulator are replaced by live working personnel, and finally the binding and fixing between the conductors and the insulator are recovered. The scheme is suitable for the work of replacing the straight pole cross arm and the insulator in an electrified way, and is not suitable for the work of replacing the tension-resisting pole cross arm in an electrified way.
Disclosure of Invention
The utility model discloses in order to solve above-mentioned problem, provide a change instrument and change method of electrified change horizontal arrangement strain insulator pole cross arm, set up a novel instrument that can change strain insulator pole cross arm, can solve not enough, the not enough scheduling problem of spatial position of safe distance, realize the electrified change of 10kV horizontal arrangement strain insulator pole cross arm or insulator string.
To the problem that the scheme one among the background art received the space distance requirement and the shortcoming that the scheme two need the work of having a power failure, this disclosure sets up a novel instrument and can replace new upper cross arm transfer circuit stress, treats that cross arm and insulator chain change and finishes the back, resumes the circuit again. The newly developed tool does not change the interphase distance of the line, increases the safety distance between the phase and the ground and between people and charged bodies, and realizes the charged replacement of the horizontally arranged strain pole cross arm and the insulator string. To the limitation that three schemes can only change linear pole cross arm and insulator with electricity, the tool disclosed by the invention can replace corresponding facilities to complete the work of changing 10kV horizontally arranged strain pole cross arm with electricity.
In order to achieve the purpose, the following technical scheme is adopted in the disclosure:
one or more embodiments provide a replacing tool for replacing horizontally-arranged strain pole cross arms in a charged manner, which comprises horizontal insulating cross arms and vertical insulating cross arms, wherein the vertical insulating cross arms are sequentially arranged on the horizontal insulating cross arms according to a set distance to realize horizontal and horizontal arrangement;
the lower extreme of every vertical insulating cross arm sets up two at least intervals and sets for even board with adjustable of distance, even board with adjustable is used for being connected link plate fixed connection with strain insulator.
One or more embodiments provide a method for replacing a horizontally arranged tension pole cross arm in a live manner, comprising the following steps:
disconnecting the tension insulator connecting hanging plate on the line from the original cross arm, connecting the tension insulator connecting hanging plate by adopting the replacing tool, fixing the tension insulator connecting hanging plate connecting insulator and the bow wire, and hoisting to a set height;
replacing the new cross arm, and vertically dropping the hoisted lead, the insulator and the hardware fitting to the original position by adopting the replacing tool;
turning the three-phase bow wire downwards to the original position; and separating the tension insulator connecting and hanging plate from the replacing tool, and fixing the tension insulator connecting and hanging plate on a new cross arm.
Compared with the prior art, the beneficial effect of this disclosure is:
(1) the replacing tool is suitable for various tension rod types such as triangular arrangement, horizontal arrangement and the like, does not relate to the problem of the space distance above the original cross arm, and is wider in application range.
(2) The tool replacing method and the tool replacing device are applied based on an integrated structure and a mechanical design of the tool and an application of the special live-line operation vehicle and the live-line tool, so that manpower and operation time are greatly saved, and operation efficiency is improved.
(3) By adopting the replacing tool and the replacing cross arm disclosed by the invention, the bow lead is upwards overturned and hoisted, so that the safety distance below is increased, and the personal safety of the operating personnel below the circuit is ensured.
(4) The replacing tool is of a detachable structure, is convenient and fast to assemble, firm and reliable when in use, is simple to disassemble when not in use, and occupies small space. The tool is used in a non-power-off mode, the whole tool is flexible, convenient, safe and quick to use, the power consumption of a client is zero during operation, and the power supply is reliable.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and not to limit the disclosure.
Fig. 1 is a schematic structural view of a replacement tool according to embodiment 1 of the present disclosure;
wherein: 1. the self-locking device comprises a self-locking hook, 2 horizontal insulating cross arms, 3 vertical insulating cross arms, 4 first fixing structures, 4-1 connecting hanging plates, 5 adjustable connecting plates, 6 second fixing structures, 7 bow wire overturning hooks, 7-1 self-locking pieces.
The specific implementation mode is as follows:
the present disclosure is further described with reference to the following drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments in the present disclosure may be combined with each other. The embodiments will be described in detail below with reference to the accompanying drawings.
Example 1
In the technical solution disclosed in one or more embodiments, as shown in fig. 1, a replacing tool for replacing horizontally arranged strain pole cross arms in a live line manner includes a horizontal insulating cross arm 2 and a vertical insulating cross arm 3, wherein the vertical insulating cross arms 3 are sequentially arranged on the horizontal insulating cross arm 2 at a set interval to realize horizontal and horizontal arrangement;
the lower extreme of every vertical insulating cross arm 3 sets up two adjustable even boards 5 that the interval set for the distance at least, even board 5 is used for being connected link plate fixed connection with strain insulator with adjustable.
This embodiment is through horizontal insulating cross arm 2 and vertical insulating cross arm 3, and horizontal insulating cross arm is used for providing horizontal direction support framework, and vertical insulating cross arm is as main part load-carrying structure, and vertical insulating cross arm connects the strain insulator connection link plate on every phase line way respectively for behind this instrument fixed strain insulator and the circuit, can keep the safe distance between the strain insulator between the three-phase and the circuit.
The tension insulator connecting hanging plate is a hanging plate arranged on the tension insulator and used for realizing the movement of the tension insulator.
In order to realize that the tool lifts the insulator and the line, the tool further comprises a hanging mechanism, and the hanging mechanism is arranged on the horizontal insulating cross arm 2.
As a mode that can realize, the dress mechanism is one or more auto-lock couple 1 of setting on horizontal insulating cross arm 2, auto-lock couple 1 can be used for being connected with the crane lifting hook, sets up to auto-lock structure, can guarantee that this instrument deviates from the lifting hook of crane, causes the dangerous accident.
The mode that the lower extreme of vertical insulating cross arm 3 set up adjustable even board 5 can adopt arbitrary structure, and the lower extreme of vertical insulating cross arm 3 sets up to polygon, triangle-shaped or anomalous shape, can set up to arbitrary structures such as braced frame, plate body, and the lower extreme of vertical insulating cross arm 3 sets up even board 5 with adjustable at the distance that the interval was set for in the horizontal direction.
Specifically, the structure shown in fig. 1 can be adopted in this embodiment, the lower end of the vertical insulating cross arm 3 is set as a triangular frame, and the triangular frame is provided with an adjustable connecting plate 5 with a set distance.
The adjustable connecting plate 5 is used for fixing a hanging plate connected with a tension insulator, so that the transfer of a line and the insulator is realized.
In some embodiments, the upper end of the vertical insulating cross arm 3 is connected with the horizontal insulating cross arm 2, and in order to reduce the weight of the tool, the upper end of the vertical insulating cross arm 3 is arranged in a straight line.
Optionally, the upper end of the vertical insulating cross arm 3 is connected with the horizontal insulating cross arm 2 and is connected with a first fixing structure 4, the first fixing structure 4 comprises a connecting hanging plate 4-1, a bolt and a nut, one end of the hanging plate 4-1 is matched with the surface of the horizontal insulating cross arm 2, and the other end of the hanging plate 4-1 is matched with the upper end structure of the vertical insulating cross arm 3; two ends of the hanging plate 4-1 are respectively connected to the horizontal insulating cross arm 2 and the vertical insulating cross arm 3 through bolts and nuts.
Optionally, the adjustable connecting plate 5 includes two parallel plate surfaces, and the lower end of the adjustable connecting plate is provided with an adjustable connecting hole, and the adjustable connecting hole is used for being connected with the tension insulator connecting hanging plate hole in a superposition manner.
Further, still include second fixed knot structure 6, second fixed knot constructs 6 including bolt, nut and pin, according to concrete structure with adjustable even board 5 setting in the lower extreme of vertical insulating cross arm 3.
Optionally, in order to realize reliable fixed hanging of bow sub-line, the bow sub-line turnover hook 7 is further included, and a plurality of bow sub-line turnover hooks are sequentially arranged on the vertical insulating cross arm 3 from top to bottom.
Optionally, a self-locking plate 7-1 is arranged at the hook opening of the bow wire overturning hook 7.
Before the transmission line is lifted, the bow wire overturning hook 7 is used for placing the bow wire to the upper side from the lower side of the line, fixing and self-locking the bow wire by the hook and keeping the safety distance of an operator when the lower end of the live line works. The bow line overturning hook 7 can be formed by arranging two or more layers of hooks so as to be suitable for locking bow lines with different lengths.
Adopt the instrument of this embodiment to change the former cross arm on the line transmission line under the circumstances that the circuit does not have a power failure, set up bow sub-line fixed hook 7 and fixed strain insulator simultaneously and connect the adjustable even board 5 of link plate, realize that strain pole cross arm changes, make the operation personnel safe efficient accomplish change strain pole cross arm work, solved the difficult problem that can't change the horizontal arrangement strain pole cross arm with electricity, shorten the power failure scope.
Example 2
Based on the tool of embodiment 1, the present embodiment provides a method for replacing a horizontally arranged tension pole cross arm in a live manner, which includes the following steps:
step 1, disconnecting a tension insulator connecting hanging plate on a line from an original cross arm, connecting the tension insulator connecting hanging plate by using a replacing tool in embodiment 1, fixing the tension insulator connecting hanging plate connecting insulator and a bow wire, and hoisting the tension insulator connecting hanging plate to a set height;
Adopt the instrument of embodiment 1 to change the former cross arm on the line transmission line under the circumstances that the circuit does not have a power failure, set up bow sub-line fixed hook 7 and the adjustable even board 5 of fixed strain insulator connection link plate simultaneously, realize that strain pole cross arm changes, make the operation personnel accomplish the work of changing strain pole cross arm safely and efficiently, solved the difficult problem that can't change the horizontally arranged strain pole cross arm with electricity, shorten the power failure scope.
The specific implementation steps may be as follows:
1) a wire grip and a backup protection rope are tied on an original cross arm of the power transmission line, and a three-phase wire, an insulator and the original cross arm are shielded in an insulating way;
and after the operator arrives at the operation position, line equipment facilities such as three-phase wires, insulators, cross arms and the like are insulated and shielded in sequence, and before the original cross arm is shielded, a wire grip buckle and a backup protection rope are tied at the proper position of the original cross arm.
2) Tightening transmission conductors on two sides of each phase of the original cross arm through tighteners respectively, and loosening nuts between the tension insulator connecting hanging plates and the cross arms;
3) the ground electrician assembles the special tool for replacing the tension pole cross arm in the embodiment 1, and checks that all parts are connected well, firmly and reliably.
4) Hoisting the tool in the embodiment 1 vertically above the power transmission line by a crane and dropping the tool to a proper position;
5) the two side-by-side bow sub-lines are turned upwards, fixed on the bow sub-line turning hook 7 according to the length of the bow sub-line and self-locked.
6) And fixing the loosened insulator connecting plates on the adjustable connecting plate 5 of the tool in the embodiment 1, checking the fixing reliability and bearing the force.
7) And (4) removing the wire tightener and the wire clamping device on the line, and the wire buckle and the backup protection rope on the original cross arm.
8) The three-phase wire, the insulator and the hardware are vertically hoisted to a safe position by a crane through the tool in the embodiment 1, and a worker replaces the cross arm below the three-phase wire, the insulator and the hardware.
9) After the cross arm is replaced, the crane vertically drops the lifted wires, insulators and hardware fittings to the original position through a new tool.
10) And wire buckles and a backup protection rope are arranged on two sides of the new cross arm, and the wire is tightened through a wire tightener, so that the bearing force is checked reliably.
11) The tension insulator connecting hanging plate is separated from the adjustable connecting plate 5 of the tool in the embodiment 1.
12) The bow wire reversing hook 7 of the tool described in example 1 was unlocked and the three-phase bow wire was respectively reversed down to the original position.
13) The tool described in example 1 was lifted by a crane and placed on the ground.
14) The insulator connecting plate is fixed on the new cross arm, and the inspection is reliable.
15) And taking down the wire tightener, and removing the insulation shielding in sequence, so that the ground electrician can disassemble and collect the special tool for replacing the tension pole cross arm, and the work is finished.
The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.
Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.
Claims (6)
1. The utility model provides a change instrument of horizontal arrangement strain insulator pole cross arm is changed to electrified, characterized by: the tension insulator connecting and hanging plate comprises a horizontal insulating cross arm and a vertical insulating cross arm, wherein the vertical insulating cross arms are sequentially arranged on the horizontal insulating cross arms according to a set distance to realize horizontal and transverse arrangement, so that the vertical insulating cross arms are respectively connected with the tension insulator connecting and hanging plate on each phase line and fix the tension insulators and the lines, and then the safety distance between the tension insulators and the lines among three phases is kept;
the lower end of each vertical insulating cross arm is at least provided with two adjustable connecting plates with a set distance at intervals, and the adjustable connecting plates are used for being fixedly connected with the tension insulator connecting hanging plate; the tension insulator connecting hanging plate is arranged on the tension insulator and used for realizing the movement of the tension insulator;
the bow sub-line overturning hook is sequentially arranged on the vertical insulating cross arm from top to bottom, so that the bow sub-line is placed from the lower side to the upper side of the line, is fixed by the hook and is self-locked, and the reliable fixed hanging of the bow sub-line is realized;
the lower end of the vertical insulating cross arm is provided with a triangular frame, and the triangular frame is provided with adjustable connecting plates with set intervals; the upper end of the vertical insulating cross arm is connected with the horizontal insulating cross arm, and the upper end of the vertical insulating cross arm is arranged in a straight shape; the upper end of the vertical insulating cross arm is connected with the horizontal insulating cross arm through a first fixing structure, the first fixing structure comprises a second connecting hanging plate, a bolt and a nut, one end of the second connecting hanging plate is matched with the surface of the horizontal insulating cross arm, and the other end of the second connecting hanging plate is matched with the upper end structure of the vertical insulating cross arm; two ends of the second connecting hanging plate are connected to the horizontal insulating cross arm and the vertical insulating cross arm through bolts and nuts respectively.
2. The tool for replacing a horizontally arranged tension pole cross arm in a live line manner as claimed in claim 1, wherein: still include to hang the dress mechanism, it sets up on horizontal insulating cross arm to hang the dress mechanism.
3. The tool for replacing a horizontally arranged tension pole cross arm in a live line manner as claimed in claim 2, wherein: the hanging mechanism is one or more self-locking hooks arranged on the horizontal insulating cross arm.
4. The tool for replacing a horizontally arranged tension pole cross arm in a live line manner as claimed in claim 1, wherein: the adjustable connecting plate comprises two parallel plate surfaces, the lower end of the adjustable connecting plate is provided with an adjustable connecting plate hole, and the adjustable connecting plate hole is used for being connected with the tension insulator connecting hanging plate hole in a superposition mode.
5. The tool for replacing a horizontally arranged tension pole cross arm in a live line manner as claimed in claim 1, wherein: still include second fixed knot structure, second fixed knot structure includes bolt, nut and pin, sets up the even board with adjustable according to specific structure at the lower extreme of vertical insulating cross arm.
6. A method for replacing a horizontally arranged strain pole cross arm in a live manner is characterized by comprising the following steps:
disconnecting the tension insulator connecting hanging plate on the line from the original cross arm, connecting the tension insulator connecting hanging plate by using the replacing tool of any one of claims 1-5, fixing the tension insulator connecting hanging plate with the insulator and the bow wire, and hoisting the tension insulator connecting hanging plate to a set height;
replacing the new cross arm, and vertically dropping the hoisted lead, the insulator and the hardware in the original position by using the replacement tool of any one of claims 1 to 5;
turning the three-phase bow wire downwards to the original position; separating the tension insulator connecting hanging plate from the replacing tool of any one of claims 1 to 5, and fixing the tension insulator connecting hanging plate on the new cross arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011191281.5A CN112366590B (en) | 2020-10-30 | 2020-10-30 | Replacing tool and replacing method for replacing horizontally-arranged strain pole cross arm in electrified mode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011191281.5A CN112366590B (en) | 2020-10-30 | 2020-10-30 | Replacing tool and replacing method for replacing horizontally-arranged strain pole cross arm in electrified mode |
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| CN112366590A CN112366590A (en) | 2021-02-12 |
| CN112366590B true CN112366590B (en) | 2022-03-01 |
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