CN110635388A - Eight-split large-section wire tension stringing pulley hanger and disassembling and assembling method thereof - Google Patents

Eight-split large-section wire tension stringing pulley hanger and disassembling and assembling method thereof Download PDF

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Publication number
CN110635388A
CN110635388A CN201810653773.8A CN201810653773A CN110635388A CN 110635388 A CN110635388 A CN 110635388A CN 201810653773 A CN201810653773 A CN 201810653773A CN 110635388 A CN110635388 A CN 110635388A
Authority
CN
China
Prior art keywords
frame
hanging
tackle
isosceles trapezoid
wire
Prior art date
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.)
Pending
Application number
CN201810653773.8A
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Chinese (zh)
Inventor
陈震
刘艳梅
陈显伟
刘涛
张海廷
李振东
殷鹏
丛培元
李大鹏
崔义彦
刘靖波
李春斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Liaoning Power Transmission And Transformation Engineering Co Ltd
State Grid Corp of China SGCC
State Grid Liaoning Electric Power Co Ltd
Shenyang Aerospace University
Original Assignee
Liaoning Power Transmission And Transformation Engineering Co Ltd
State Grid Corp of China SGCC
State Grid Liaoning Electric Power Co Ltd
Shenyang Aerospace University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Liaoning Power Transmission And Transformation Engineering Co Ltd, State Grid Corp of China SGCC, State Grid Liaoning Electric Power Co Ltd, Shenyang Aerospace University filed Critical Liaoning Power Transmission And Transformation Engineering Co Ltd
Priority to CN201810653773.8A priority Critical patent/CN110635388A/en
Publication of CN110635388A publication Critical patent/CN110635388A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/02Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables

Abstract

The invention relates to an eight-split large-section wire tension stringing pulley hanger and a disassembling and assembling method thereof. The invention simplifies the layout and suspension mode of the paying-off tackle for suspending four sets of three wheels on each pole of the iron tower, and improves the tackle suspension construction efficiency of tension stringing; meanwhile, the key problems that the pulley suspension height is difficult to adjust and the like, the sag observation is difficult, the accessory installation efficiency is poor and the like caused by a conventional pulley suspension mode in stringing construction are solved; the problem that the steel wire rope sleeve is basically scrapped after being used independently to hang an engineering is avoided, the steel wire rope sleeve can be repeatedly used, and the construction cost is reduced; compared with the conventional suspension tackle, the suspension points are reduced, and potential safety hazard points are reduced.

Description

Eight-split large-section wire tension stringing pulley hanger and disassembling and assembling method thereof
Technical Field
The invention belongs to the field of power transmission and transformation construction, and particularly relates to an eight-split large-section conductor tension stringing pulley hanger and a disassembling and assembling method thereof.
Background
The ultra-high voltage is the most advanced power transmission technology in the world and has the characteristics of large transmission capacity, long power transmission distance, low line loss, small occupied land and the like.
Some projects of extra-high voltage direct current transmission line adopt eight-split 1250/100mm2The grade large-section lead is applied to the ultrahigh-voltage direct-current transmission line engineering in China for the first time, the outer diameter and the calculated weight of the lead are large, and the requirement on the performance of a construction machine by tension paying-off is high. The tension stringing adopts a mode of '4 x one pulling two', so that each iron tower is required to be hung with four groups of stringing pulleys with the diameter of 1160mm, and one iron tower is required to be hung with eight groups of stringing pulleys. The conventional method is that a single-group pulley is usually suspended by two (about 5 m/root) fixed-length steel wire ropes in cooperation with a winch and a lever hoist. This suspension has the following disadvantages:
firstly, the safety is low, the number of hanging points is too many, and each point has safety hazard.
Secondly, the efficiency of construction is low, and the coaster singly hangs one by one.
Thirdly, the sag is difficult to control, the height of the pulley is difficult to adjust uniformly, and the sag of each sub-conductor is difficult to adjust.
Fourthly, the construction cost is high, seven, eight and hundred fixed-length steel wire ropes manufactured by one project are basically scrapped after being used, and the reuse is difficult.
Disclosure of Invention
In order to solve the problems of four groups of pulleys which are hung independently, the invention aims to provide an eight-split large-section conductor tension stringing pulley hanger and a disassembling and assembling method thereof.
The purpose of the invention is realized by the following technical scheme:
the eight-split large-section wire tension stringing pulley hanger is of an isosceles trapezoid multi-layer frame structure, hanging plates B used for being connected with a V-shaped insulator string are arranged at two ends of the upper bottom of the isosceles trapezoid, four hanging plates A are uniformly arranged on the lower bottom of the isosceles trapezoid along the length direction, two of the hanging plates A are arranged at two ends of the lower bottom of the isosceles trapezoid, each hanging plate A is connected with a stringing pulley through a parallel hanging plate, and the four stringing pulleys are equally hung on the pulley hanger;
wherein: the pulley hanging frame is divided into an isosceles trapezoid frame and an inner frame positioned in the frame, and the inside of the frame is divided into an upper layer and a lower layer through a transverse inner frame;
two ends of a frame serving as the upper bottom of the isosceles trapezoid are respectively connected with a hanging plate B, four hanging plates A are uniformly connected on the frame serving as the lower bottom of the isosceles trapezoid along the length direction, a joint connecting the two hanging plates B and a joint connecting the two hanging plates A with the lower bottom positioned in the middle are in cross connection through an inner frame, namely the two inner frames for connection are in an X shape, and the intersection point is connected with the middle point of the horizontal inner frame through a connecting plate; the connecting positions of two hanging plates A positioned in the middle of the lower base of the isosceles trapezoid are respectively connected with the two ends of the transverse inner frame through connecting plates;
the frame is made of channel steel, and the inner frame is made of angle steel;
the transverse inner frame is parallel to the upper bottom and the lower bottom of the isosceles trapezoid;
the invention discloses a method for disassembling and assembling a pulley hanging frame of an eight-split large-section conductor tension stringing pulley, which comprises the following steps:
when the paying-off tackle is installed, the upper connecting plates of the four groups of paying-off tackle are respectively connected with the four hanging plates A on the lower bottom of the isosceles trapezoid through the parallel hanging plates, and the four groups of paying-off tackle are hung on the tackle hanging frames in equal height; then, connecting one end of each group of V-shaped insulator strings with the hanging plates B at the two ends of the upper bottom of the isosceles trapezoid; two sets of motor-driven winching steel wire ropes are connected with the other end of the V-shaped insulator string, the steel wire ropes are dragged and lifted to a set position through a hoisting tackle on an iron tower by a winching machine, and the four sets of paying-off tackle are suspended after being connected with the iron tower;
when the cable is disassembled, firstly, the wire is lifted by the wire lifter, the motorized winch is used for traction control, the paying-off tackle is sequentially unfastened from the tackle hanging frame and is placed on the ground, then the V-shaped insulator string is fixed by the flexible nylon hanging strip and the lever block and is adjusted to a required position, the motorized winch is used for controlling the connection part of the tackle hanging frame and the V-shaped insulator string to be unfastened, and then the tackle hanging frame is put down; finally, the installation of the wire clamp yoke plate and the wire clamp and the fixation of the wire are finished under the matching of the lever block;
wherein: in the process of spreading the lead, the four sets of the paying-off pulleys are equal in height and are stressed uniformly.
The invention has the advantages and positive effects that:
1. the tackle hanging frame of the invention can hang four sets of paying-off tackle on the same hanging frame at the same time, the height of the tackle does not need to be adjusted, the height is kept consistent, and the sag of each sub-wire is easy to adjust.
2. The pulley hanging frame can be repeatedly used, avoids the situation that the steel wire rope sleeve is scrapped after one project is used, and reduces the construction cost.
3. In the paying-off process, the pulley has small swing and good stringing passing performance, and the safety is improved.
And 4, the V-shaped insulator string and the paying-off tackle are synchronously installed and suspended, so that the workload and suspension points are reduced, and the construction efficiency and safety are improved.
5. The invention can directly lift the wire after the wire is tightened, thereby greatly reducing the workload and reducing the wire damage.
Drawings
FIG. 1 is a front view of the structure of the tackle bracket of the present invention;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a schematic structural view of the tackle bracket of the present invention mounted on an iron tower;
wherein: the steel wire rope paying-off device comprises a frame 1, an inner frame 2, a connecting plate 3, a hanging plate A, a hanging plate B, a parallel hanging plate 6, an upper connecting plate 7, a paying-off tackle 8, a V-shaped insulator string 9 and an iron tower 10.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 3, the tackle hanger and tackle hanger of the present invention are of an isosceles trapezoid multi-layer frame structure, the tackle hanger is divided into an isosceles trapezoid frame 1 and a supporting inner frame 2 located inside the frame 1, the inside of the frame 1 is divided into an upper layer and a lower layer by a horizontal inner frame 2, and the horizontal inner frame 2 is parallel to the upper bottom and the lower bottom of the isosceles trapezoid.
The two ends of the upper bottom of the isosceles trapezoid are respectively provided with a hanging plate B5 used for being connected with a V-shaped insulator string 9, the lower bottom of the isosceles trapezoid is uniformly provided with four hanging plates A4 along the length direction, two hanging plates A4 are arranged at the two ends of the lower bottom of the isosceles trapezoid, each hanging plate A4 is connected with a paying-off tackle 8 (the paying-off tackle 8 is a three-wheel tackle) through a parallel hanging plate 6, and the four paying-off tackles 8 are hung on a tackle hanging frame in equal height. Two ends of a frame 1 as the upper bottom of the isosceles trapezoid are respectively welded with a hanging plate B5, the frame 1 as the lower bottom of the isosceles trapezoid is uniformly welded with four hanging plates A4 along the length direction, a welding part for welding the two hanging plates B5 and a welding part for welding the two hanging plates A4 at the middle of the lower bottom are crosswise welded through an inner frame 2, namely, the two inner frames 2 for connection are in an X shape, and the intersection point and the middle point of the transverse inner frame 2 are welded through a connecting plate 3. The welding positions of the two hanging plates A4 positioned in the middle of the isosceles trapezoid lower base are respectively welded with the two ends of the transverse inner frame 2 through the connecting plates 3. The frame 1 is a channel steel, and the inner frame 2 is an angle steel.
The invention discloses a method for disassembling and assembling a pulley hanging frame of an eight-split large-section conductor tension stringing pulley, which comprises the following steps:
when in installation, the upper yoke plates 7 of the four sets of paying-off pulleys 8 are respectively connected with the four hanging plates A4 on the lower bottom of the isosceles trapezoid through the parallel hanging plates 6, and the four sets of paying-off pulleys 8 are hung on the pulley hanging frames in equal height; then, one end of each group of V-shaped insulator strings 9 is connected with the hanging plates B5 at the two ends of the upper bottom of the isosceles trapezoid; two sets of motor-driven winching steel wire ropes are connected with the other end of the V-shaped insulator string 9, the steel wire ropes are dragged and lifted to a set position through a hoisting tackle on an iron tower 10 by a winching machine, and the four sets of paying-off tackle 8 are hung after being connected with the iron tower 10; the installation process is relatively convenient.
In the process of unfolding the lead, the four sets of paying-off pulleys 8 are equal in height and even in stress, and when the running board passes through the paying-off pulleys 8, the pulley hanging frame is stable and reliable and has good passing performance.
When the tangent tower accessory is disassembled, in the installation process of the tangent tower accessory, firstly, the wire is lifted by the wire lifter, the motorized winching is used for traction control, the paying-off tackle 8 is loosened from the tackle hanging frame one by one and is placed on the ground, then, the V-shaped insulator string 9 is fixed by the flexible nylon hanging strip and the lever block and is adjusted to a required position, the motorized winching is used for controlling the connection position of the tackle hanging frame and the V-shaped insulator string 9 to be loosened, and then, the tackle hanging frame is put down; and finally, the installation of the wire clamp yoke plate and the wire clamp and the fixation of the wire are completed under the matching of the lever block. The whole pulley hanging frame is simple in dismantling process, and the wire clamp yoke plate can be installed in place quickly and smoothly.
Because each pole of the iron tower is hung with four sets of three-wheeled paying-off pulleys 8, in order to simplify the pulley arrangement and suspension mode and facilitate subsequent line tightening construction and accessory installation operation, the invention analyzes and improves the pulley suspension mode of a4 x one-pulling 2 mode for eight-split large-section conductors, fully utilizes the existing V-shaped insulator strings and hardware fittings, develops four sets of three-wheeled stringing pulley hangers, and suspends the four sets of three-wheeled paying-off pulleys on the same hanger of the pulleys at the same time, thereby well solving the defects of the independent suspension mode, reducing the pulley suspension workload, achieving the purposes of equal height and levelness of the paying-off pulleys, improving the stringing quality, construction efficiency and safety and reducing the construction cost.

Claims (7)

1. The utility model provides an eight split large cross-section wire tension stringing coaster stores pylon which characterized in that: this coaster stores pylon is isosceles trapezoid's multilayer frame structure, the both ends at the isosceles trapezoid upper base all are equipped with link plate B (5) that are used for being connected with V type insulator chain (9), and these waist trapezoids go to the bottom along length direction evenly install four link plate A (4), two link plate A (4) wherein install in the both ends that the isosceles trapezoid went to the bottom, every link plate A (4) are gone up and are all connected unwrapping wire coaster (8), four through parallel link plate (6) unwrapping wire coaster (8) wait to hang on the coaster stores pylon.
2. The eight-split large-cross-section wire tension stringing trolley hanger of claim 1, wherein: the tackle hanging frame is divided into an isosceles trapezoid frame (1) and an inner frame (2) located in the frame (1), and the inner portion of the frame (1) is divided into an upper layer and a lower layer through the transverse inner frame (2).
3. The eight-split large-cross-section wire tension stringing trolley hanger of claim 2, wherein: two ends of a frame (1) as the upper bottom of the isosceles trapezoid are respectively connected with a hanging plate B (5), the frame (1) as the lower bottom of the isosceles trapezoid is uniformly connected with four hanging plates A (4) along the length direction, the joint connecting the two hanging plates B (5) and the joint connecting the two hanging plates A (4) with the lower bottom positioned in the middle are in cross connection through an inner frame (2), namely the two inner frames (2) for connection are in an X shape, and the intersection point is connected with the middle point of the horizontal inner frame (2) through a connecting plate (3); the connecting parts of two hanging plates A (4) positioned in the middle of the isosceles trapezoid lower bottom are respectively connected with the two ends of the transverse inner frame (2) through connecting plates (3) through the inner frame (2).
4. The eight-split large-cross-section wire tension stringing trolley hanger of claim 2, wherein: the frame (1) is a channel steel, and the inner frame (2) is an angle steel.
5. The eight-split large-cross-section wire tension stringing trolley hanger of claim 2, wherein: the transverse inner frame (2) is parallel to the upper bottom and the lower bottom of the isosceles trapezoid.
6. The method for disassembling and assembling the eight-split large-section conductor tension stringing pulley hanger according to any one of claims 1 to 5, wherein the method comprises the following steps:
when the device is installed, the upper yoke plates (7) of the four groups of paying-off pulleys (8) are respectively connected with the four hanging plates A (4) on the lower bottom of the isosceles trapezoid through the parallel hanging plates (6), and the four groups of paying-off pulleys (8) are hung on the pulley hanging frames in equal height; then, one end of each group of V-shaped insulator strings (9) is connected with the hanging plates B (5) at the two ends of the upper bottom of the isosceles trapezoid; two sets of motor-driven winching steel wire ropes are connected with the other end of the V-shaped insulator string (9), the steel wire ropes are dragged and lifted to a set position through a hoisting tackle on an iron tower (10) by a winching machine, and the four sets of paying-off tackle (8) are hung after being connected with the iron tower (10);
when the cable is disassembled, firstly, the wire is lifted by the wire lifter, the motorized winching is used for traction control, the paying-off tackle (8) is separated from the tackle hanging frame one by one and is placed on the ground, then the V-shaped insulator string (9) is fixed by the flexible nylon hanging strip and the lever block and is adjusted to a required position, the motorized winching is used for controlling the separation of the connection part of the tackle hanging frame and the V-shaped insulator string (9), and then the tackle hanging frame is put down; and finally, the installation of the wire clamp yoke plate and the wire clamp and the fixation of the wire are completed under the matching of the lever block.
7. The disassembling and assembling method according to claim 6, characterized in that: in the process of spreading the lead, the four sets of the paying-off pulleys (8) are equal in height and are stressed uniformly.
CN201810653773.8A 2018-06-22 2018-06-22 Eight-split large-section wire tension stringing pulley hanger and disassembling and assembling method thereof Pending CN110635388A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810653773.8A CN110635388A (en) 2018-06-22 2018-06-22 Eight-split large-section wire tension stringing pulley hanger and disassembling and assembling method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810653773.8A CN110635388A (en) 2018-06-22 2018-06-22 Eight-split large-section wire tension stringing pulley hanger and disassembling and assembling method thereof

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113422322A (en) * 2021-07-21 2021-09-21 北京国电天昱建设工程有限公司 Stringing pulley and stringing method for overhead line

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113422322A (en) * 2021-07-21 2021-09-21 北京国电天昱建设工程有限公司 Stringing pulley and stringing method for overhead line

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