CN203813328U - Extended cross-arm lifting device used for replacing double-string suspended insulator - Google Patents
Extended cross-arm lifting device used for replacing double-string suspended insulator Download PDFInfo
- Publication number
- CN203813328U CN203813328U CN201420233217.2U CN201420233217U CN203813328U CN 203813328 U CN203813328 U CN 203813328U CN 201420233217 U CN201420233217 U CN 201420233217U CN 203813328 U CN203813328 U CN 203813328U
- Authority
- CN
- China
- Prior art keywords
- arm
- support arm
- cross
- leading screw
- supporting base
- 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.)
- Expired - Lifetime
Links
- 239000012212 insulator Substances 0.000 title claims abstract description 32
- 239000000725 suspension Substances 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Insulators (AREA)
Abstract
The utility model relates to the technical field of overhead transmission line maintenance equipment in the electric power industry, in particular to an extended cross-arm lifting device used for replacing a double-string suspended insulator. During the replacement of a double-string suspended insulator, the outer end of the pole cross arm has no load-bearing portion for tools, the insulator strings are inclined and difficult to disassemble when the lead is lifted by using hanging points on the inner side of the cross arm. The extended cross-arm lifting device comprises two lifting screw rods, an extended support arm, a supporting base and a transverse rod, wherein the extended support arm is the shape of a crank, the first lifting screw rod is assembled on the outer end of a horizontal section of the extended support arm; the lower part of the horizontal section of the extended support arm is provided with a positioning clamping groove; the supporting base is fixed under the middle part of an inclined section of the extended support arm, and the lower end part of the extended support arm is inserted with the transverse rod; and the first lifting screw rod is clamped on the outer end of a pole cross arm through the extended support arm, and the second lifting screw rod is assembled on the inner side of the cross arm. The extended cross-arm lifting device is simple in structure, inner and outer sides of an insulator string to be maintained are provided with hanging points, the single side lead lifting problem is solved, the operation difficulty is reduced, and the working efficiency is improved.
Description
Technical field
The utility model relates to power industry overhead transmission line service equipment technical field, specifically a kind of for changing the prolongation cross-arm lifting device of two string suspension insulators.
Background technology
In recent years, along with greatly developing of power industry, superhigh pressure supply line has become main force's electrical network, and electrical network is in large leap, heavy icing area and special important leap, particularly 20～30mm heavy icing area, all adopts special insulation substring connecting mode: the two strings of duplex are arranged suspension insulator form.
For transmission line horizontal path, arrange the two string of duplex suspension insulator assembling form, when maintain and replace insulator and connection gold utensil, because the cross-arm outer end of tower bar does not have the position of instrument load, can only utilize the cross-arm of suspension insulator one side to hang hoisting tool as hanging point, after wire is mentioned, because oblique loading causes insulator string, tilt, cause insulator and connect gold utensil being difficult to pull down, increased work high above the ground difficulty; And the wire of this form is long, weight is larger, in suspension insulator one side, uses separately hoisting tool to carry out lifting wire operation, and instrument carrying is excessive.
Summary of the invention
The purpose of this utility model is to provide a kind of for changing the prolongation cross-arm lifting device of two string suspension insulators, has solved the large problem of transmission line vertical arrangement duplex two string suspension insulator maintenance difficulty.
The technical solution of the utility model: comprise that the first lifting leading screw and second promotes leading screw, also comprises and extends support arm, supporting base and cross bar; Extend support arm and be crank-like, the horizontal segment outer end that extends support arm is provided with and promotes longitudinally leading screw connecting through hole, and the first wire lever that promotes leading screw is through extending support arm through hole, and leading screw deck and ratchet spanner are installed on the top that extends support arm through hole; The other end bottom that extends support arm horizontal segment is provided with locating groove; Leg-of-mutton supporting base is fixed on the below, tilting section middle part that extends support arm, and supporting base bottom is provided with support plate; The bottom that extends support arm tilting section has horizontal fixing hole, and cross bar is inserted in fixing hole; Extend support arm and be installed on tower bar cross arm end by supporting base and cross bar, second promotes leading screw is assemblied on cross-arm by the through hole inside tower bar cross-arm, and the first lifting leading screw and second promotes leading screw and lays respectively at insulator string both sides to be keeped in repair.
Further, the support plate of described supporting base bottom is parallel with prolongation support arm horizontal segment upper surface.
The utility model has the advantages that: simple in structure, be fixed on tower bar cross arm end, tool support point is extended to outside cross-arm, increase steel tower cross arm end store mounting point, for changing horizontal path, arrange the insulator of two string suspension insulator series connection forms and connect gold utensil; Avoid one-sided lifting transmission pressure, the not easy-to-dismount problem of insulator string inclination; Greatly reduce task difficulty, shortened maintenance time, improved operating efficiency.
Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is elaborated.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that the utility model extends support arm schematic diagram;
Fig. 3 is the vertical view that the utility model extends support arm.
Embodiment
In figure: 1, first promote leading screw, 2, extend support arm, 3, supporting base, 4, cross bar, 5, second promotes leading screw, and 6, cross-arm angle steel, 7, cross-arm yoke plate, 8, insulator string, 9, locating groove, 10, supporting base.
Embodiment 1
As can be seen from Figure 1, the utility model is comprised of the first lifting leading screw 1, the second lifting leading screw 5, prolongation support arm 2, supporting base 3 and cross bar 4; Extend support arm 2 and be crank-like, the horizontal segment outer end that extends support arm 2 is provided with longitudinally and first promotes leading screw connecting through hole, and the first leading screw body of rod that promotes leading screw 1 is through extending support arm 2 through holes, and leading screw deck and ratchet spanner are installed on the through hole top that extends support arm 2; The other end (link of horizontal segment and the tilting section) bottom that extends support arm 2 horizontal segments is provided with locating groove 9; Leg-of-mutton supporting base 3 is by welding or be bolted to the below, tilting section middle part that extends support arm 2, and supporting base 3 bottoms are welded with support plate 10, and these support plate 10 planes are parallel with prolongation support arm 2 horizontal segment top edges; The bottom that extends support arm 2 tilting sections has horizontal fixing hole, and cross bar 4 is inserted in fixing hole.
Extend support arm 2 and be installed on tower bar cross arm end by supporting base 3 and cross bar 4, the second lifting leading screw 5 plug-in mountings are fixed on the through hole of tower bar cross-arm inner side, and the first lifting leading screw 1 and second promotes leading screw 5 and lays respectively at insulator string both sides to be keeped in repair.
While changing suspension insulator operation, use first, second to promote leading screw in insulator string both sides while lifting lead wire to be keeped in repair, mode of operation is:
1) first utilize prolongation support arm 2 to fix the first lifting leading screw, will extend support arm 2 tilting section lower ends through back-to-back cross-arm angle steel 6 gaps, make the fixed hole position that extends support arm tilting section bottom in the below of cross-arm angle steel 6; Supporting base 3 bottom support casting 10 planes being pressed over to cross-arm angle steel 6 upper surfaces as the strong point, and the cross-arm yoke plate 7(that the locating groove 9 that extends support arm 2 is stuck in steel tower are positioned to cross-arm outer end) on edge, guaranteeing to extend support arm 2 can occurred level displacement; Cross bar 4 is laterally inserted in the fixing hole that extends support arm tilting section lower end again, makes to extend support arm 2 and play leverage, the first lifting leading screw 1 that extends support arm horizontal segment outer end is positioned at suspension insulator outside to be keeped in repair as the outer sling point of cross-arm;
2) according to steel tower cross-arm structure, through hole by the leading screw body of rod of the second lifting leading screw 5 through cross-arm angle steel inner side, the second leading screw deck and ratchet spanner that promotes leading screw 5 is installed on cross-arm angle steel, making the second lifting leading screw 5 be fixed on suspension insulator inner side to be keeped in repair, is sling point in cross-arm;
3) by connecting gold utensil, transmission pressure hanging is promoted to leading screw lower end at first, second respectively, pull the lifting leading screw lifting lead wire that ratchet spanner tightens up two sling points simultaneously, the pulling force that insulator string 8 is born is transferred to first, second and is promoted on leading screw, and guarantee that insulator string keeps plumbness, can carry out whole string or monolithic repair and replacement to impaired insulator string.
Finally should be noted that: above embodiment is used for illustrating that the technical solution of the utility model is not intended to limit; those skilled in the art modifies to execution mode or part technical characterictic is equal to replacement; and do not depart from the essence of technical solutions of the utility model, within all should being encompassed in the utility model scope required for protection.
Claims (2)
1. for changing a prolongation cross-arm lifting device for two string suspension insulators, comprise that the first lifting leading screw (1) and second promotes leading screw (5), is characterized in that: also comprise and extend support arm (2), supporting base (3) and cross bar (4); Extend support arm (2) and be crank-like, the horizontal segment outer end that extends support arm (2) is provided with and promotes longitudinally leading screw connecting through hole, the first wire lever that promotes leading screw (1) is through extending support arm (2) through hole, and leading screw deck and ratchet spanner are installed on the top that extends support arm through hole; The other end bottom that extends support arm (2) horizontal segment is provided with locating groove (9); Leg-of-mutton supporting base (3) is fixed on the below, tilting section middle part that extends support arm (2), and supporting base (3) bottom is provided with support plate (10); The bottom that extends support arm (2) tilting section has horizontal fixing hole, and cross bar (4) is inserted in fixing hole; Extend support arm (2) and be installed on tower bar cross arm end by supporting base (3) and cross bar (4), second promotes leading screw (5) is assemblied on cross-arm by the through hole inside tower bar cross-arm, and the first lifting leading screw (1) and second promotes leading screw (5) and lays respectively at insulator string both sides to be keeped in repair.
2. according to claim 1 a kind of for changing the prolongation cross-arm lifting device of two string suspension insulators, it is characterized in that: the support plate (10) of described supporting base (3) bottom is parallel with prolongation support arm (2) horizontal segment upper surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420233217.2U CN203813328U (en) | 2014-05-08 | 2014-05-08 | Extended cross-arm lifting device used for replacing double-string suspended insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420233217.2U CN203813328U (en) | 2014-05-08 | 2014-05-08 | Extended cross-arm lifting device used for replacing double-string suspended insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203813328U true CN203813328U (en) | 2014-09-03 |
Family
ID=51452037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420233217.2U Expired - Lifetime CN203813328U (en) | 2014-05-08 | 2014-05-08 | Extended cross-arm lifting device used for replacing double-string suspended insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203813328U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106898968A (en) * | 2017-03-22 | 2017-06-27 | 国家电网公司 | The F shapes connected and fixed on cross-arm put forward line apparatus and application method |
| CN110355722A (en) * | 2019-07-01 | 2019-10-22 | 中冶宝钢技术服务有限公司 | Bearing replacing device and its replacing options |
-
2014
- 2014-05-08 CN CN201420233217.2U patent/CN203813328U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106898968A (en) * | 2017-03-22 | 2017-06-27 | 国家电网公司 | The F shapes connected and fixed on cross-arm put forward line apparatus and application method |
| CN110355722A (en) * | 2019-07-01 | 2019-10-22 | 中冶宝钢技术服务有限公司 | Bearing replacing device and its replacing options |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140903 |
|
| CX01 | Expiry of patent term |