CN102136695B - Overhauling tool used for +/-660kV direct-current transmission line - Google Patents

Overhauling tool used for +/-660kV direct-current transmission line Download PDF

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Publication number
CN102136695B
CN102136695B CN2010106100039A CN201010610003A CN102136695B CN 102136695 B CN102136695 B CN 102136695B CN 2010106100039 A CN2010106100039 A CN 2010106100039A CN 201010610003 A CN201010610003 A CN 201010610003A CN 102136695 B CN102136695 B CN 102136695B
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CN
China
Prior art keywords
string
jig
card
tensioning
arm
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CN2010106100039A
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CN102136695A (en
Inventor
康淑丰
张明旭
施凤祥
王学彬
焦巨轩
高志
李中生
耿三平
苏永杰
李俭
王军
姚伯岩
陈明
宋其丰
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State Grid Corp of China SGCC
Maintenance Branch of State Grid Hebei Electric Power Co Ltd
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Hebei Power Co Ultra-Hv Transmission & Distribution Co
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Priority to CN2010106100039A priority Critical patent/CN102136695B/en
Publication of CN102136695A publication Critical patent/CN102136695A/en
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    • 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
    • H02G1/04Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables for mounting or stretching

Abstract

The invention relates to an overhauling tool used for a +/-660kV direct-current transmission line, comprising fixtures and a tensioner, wherein the fixtures are clamped on two sides of an insulator, and the tensioner is connected between the fixtures. Each fixture comprises an upper V-string clamp, an upper cross arm clamp, a single-string fixture, a big knife clamp, a closed clamp and a conductor end fixture and is made of a TC4 titanium alloy. The overhauling tool has the advantages of reasonable structure, high overall intensity and bearing capacity, small volume, light weight and the like, is reliable to work, is applied for overhauling the 660kV direct-current transmission line and provides reliable guarantee for the daily overhauling after the line is safely put into operation and operated.

Description

Be used for ± check man's utensil of 660kV DC power transmission line
Technical field
The present invention relates to the maintenance utensil on a kind of transmission line, check man's utensil of particularly a kind of being exclusively used in ± 660kV DC power transmission line.
Background technology
Along with being gradually improved of China's power grid construction, extra high voltage network has become the trunk rack of China's electric power network, and this also has higher requirement for operating maintenance work.Particularly follow direct current 660kV electric pressure transmission line first Application at home; For guaranteeing the bringing normally into operation of circuit; And the problem of circuit discovery in service in time overhauled; To guarantee the safe operation of DC power transmission line, then must develop a cover and be used for the needed Work tool of circuit operating maintenance.
One of main service work content on the transmission line is exactly that the maintenance of insulator is changed, and high voltage transmission line is supported on the cross-arm through insulator mostly, and insulator plays support wire and prevents that electric current from returning the basic role on ground in overhead transmission line.Direct current 660kV extra high voltage direct current transmission line is compared with superhigh pressure, the ultra high voltage of present operation and has been adopted material different, adopts 4 * JL/G3A-1000/45mm like lead 2Steel reinforced aluminium conductor, lead interpolar spacing 18m.The straight line insulator adopts the V-type synthetic insulator, and length is about: slight dirty district 8.5m, the dirty district of severe 9.2m.Strain insulator-string adopts duplex 550kN porcelain insulator.Influenced by insulator string length and electric clearance; The tower head size of carrying insulator and power transmission line becomes big, receives effect of project, the also corresponding increase of circuit vertical load; Tension force, length etc. are all changed, and this replacing to insulator requires at aspects such as tension force, length higher requirement has just been arranged.Power transmission lines overhauling utensil below the present domestic 500kV electric pressure is fairly perfect, but because the rising of electric pressure, the increase in power transmission line footpath, and the long increase of insulator string, these maintenance utensils can not satisfy the replacing demand far away.
Summary of the invention
The technical issues that need to address of the present invention provide check man's utensil of a kind of being exclusively used in ± 660kV DC power transmission line.
For solving the problems of the technologies described above, the technical scheme that the present invention taked is:
Be used for ± check man's utensil of 660kV DC power transmission line; Comprise and be used to be installed on the jig of insulator string both sides and be connected in the tensioning apparatus between the jig; Said jig mainly comprises on the V string and blocking on card, the cross-arm, single jig, machete card, closed fixture, conductor wire end jig of going here and there; Above-mentioned single string jig, conductor wire end jig and closed fixture all adopt the TC4 titanium alloy material to make, and said tensioning apparatus is the machine driving leading screw;
When changing V-type list insulator string; The combining structure that card, single string jig and two overlap tensioning apparatus on card, the cross-arm on the employing V string; Wherein fasten on the V string and be connected on the body of the tower side gold utensil hanging point angle steel; Fasten on the cross-arm and be connected on the cross-arm wrapper sheet, single string jig is fixedly connected on the V-type series board, and tensioning apparatus is connected to V string on the card and single string jig and cross-arm card and list and goes here and there between the jig;
When changing the two insulator string of V-type; Adopt the combining structure that card, machete card and two overlap tensioning apparatus on card, the cross-arm on the V string; Wherein fasten on the V string and be connected on the body of the tower side gold utensil hanging point angle steel; Fasten on the cross-arm and be connected on the cross-arm wrapper sheet, the machete card is installed on the V-type series board, and tensioning apparatus is connected on the V string on the card and machete card and cross-arm between the card and machete card;
In the middle of changing monolithic, multi-disc insulator, or during long excellent type insulator, only adopt the combining structure of two cover closed fixtures and two cover tensioning apparatus, wherein closed fixture is sleeved on the insulator steel cap, tensioning apparatus is connected between the two cover closed fixtures;
When changing first insulator of cross-arm end; Adopt the combining structure of single string jig, closed fixture and two cover tensioning apparatus; Wherein single string jig is fixedly connected on the traction yoke plate, and closed fixture is sleeved on the insulator steel cap, and tensioning apparatus is connected between single string jig and the closed fixture;
When first insulator of restringing end; Adopt the combining structure of conductor wire end jig, closed fixture and two cover tensioning apparatus; Wherein the conductor wire end jig is fixedly connected on the conductor wire end yoke plate, and closed fixture is sleeved on the insulator steel cap, and tensioning apparatus is connected between conductor wire end jig and the closed fixture.
The concrete structure of card is on the said V string: card comprises V string upper plate and the V string lower plate that is positioned at body of the tower side gold utensil hanging point angle steel both sides on the V string; Said V string upper plate inner face is provided with and the corresponding draw-in groove I of body of the tower side gold utensil hanging point angle steel; An arm of angle of body of the tower side gold utensil hanging point angle steel is positioned at the draw-in groove I; Another arm of angle of body of the tower side gold utensil hanging point angle steel is between V string upper plate and V string lower plate, and the two ends of V string upper plate and V string lower plate compress angle steel through bolt; Be hinged with steel joint I on the outer face of V string lower plate, the other end of steel joint I is provided with the pin-and-hole that is connected with tensioning apparatus.
The concrete structure that blocks on the said cross-arm: card comprises on the cross-arm card main body and the hinged steel joint II that is connected with tensioning apparatus of being used for it on the cross-arm; The card main body is provided with and cross-arm wrapper sheet connecting hole corresponding bolts hole on the cross-arm, and the bolt hole that blocks on the main body on the connecting hole of cross-arm wrapper sheet and the cross-arm is connected through bolt.
The concrete structure of said single string jig: single string jig comprises that both sides are provided with single string jig main body of wing plate; The end of wing plate is provided with the pin-and-hole that connects tensioning apparatus; The main body below is fixedly connected with the plate of band draw-in groove II; The bottom of plate is provided with and the corresponding pin-and-hole in V-type series board connecting hole position, and V-type series board or traction yoke plate are positioned at the draw-in groove II of plate, and through bolt it is fixedly connected with plate.
The concrete structure of said machete card is: the hilt end of said machete card is provided with the pin-and-hole that is used to connect tensioning apparatus; The cutter head end is provided with the draw-in groove III that is used to clamp the V-type series board; The two side embayment head of cutter head end, draw-in groove III is provided with; The V-type series board inserts in the draw-in groove III, and the elbow of cutter head end is caught on the bolt on the V-type series board.
The concrete structure of said closed fixture is: said closed fixture comprises closed fixture main body and the loam cake that is arranged on closed fixture main body top; One end of loam cake is connected with the closed fixture subject activity through bearing pin; The other end is fixedly connected with the closed fixture main body through bolt, is provided with the through hole of housing insulation between closed fixture main body and the loam cake; The both ends of said main body are provided with the pin-and-hole that is used to connect tensioning apparatus respectively; The inboard of pin-and-hole is provided with the boom hoisting that is used to lift by crane insulator; Said boom hoisting is the support that is fixed on the closed fixture main body, and support is provided with the pulley that is used for suspension cord.
The concrete structure of said conductor wire end jig is: said conductor wire end jig comprises conductor wire end jig main body and the turnover panel card that is arranged on conductor wire end jig main body top; One end of turnover panel card and conductor wire end jig main body flexibly connect through bearing pin; The other end is fixedly connected with conductor wire end jig main body through bolt, is provided with the through hole that holds the conductor wire end yoke plate between conductor wire end jig main body and the turnover panel card; Be provided with on said conductor wire end jig main body and the turnover panel card with the conductor wire end yoke plate on the corresponding hole of nut; The both ends of said conductor wire end jig main body are connected with respectively and are used for the steel joint III that is connected with tensioning apparatus.
The improvement of said tensioning apparatus is: said tensioning apparatus is the machine driving leading screw and the hydraulic means that is connected through alignment pin or insulation pull-rod with machine driving leading screw one end.
Because the technological progress of having adopted technique scheme, the present invention to obtain is:
The present invention is based on a kind of check man's utensil that has a power failure and use on the direct current 660kV transmission line that is exclusively used in of characteristics developments such as DC power transmission line pyramidal structure, insulator string net suspension mode, lead wire and earth wire parameter; Can change class insulators such as the single insulator string of V-type, two insulator string and long excellent types simultaneously; Have rational in infrastructure, advantages such as bulk strength is high, volume is little, light weight, reliable operation, for the safety of direct current 660kV transmission line puts into operation and postrun maintenance repair provides reliable guarantee.
The setting of boom hoisting on the closed fixture can make the staff in the operating process of changing long excellent type insulator, and the heavier excellent type insulator of length of lifting weight has reduced labour intensity, has improved staff's operating efficiency.Tensioning apparatus becomes being equipped with of machine driving leading screw and hydraulic means; Be used for the folding and unfolding of idle stroke between jig; Solved the slow shortcoming of transmission speed that Hydraulic Power Transmission System exists under the great machinery load, reduced the residence time of work high above the ground personnel in work high above the ground; And this kind structure has the effect of protection each other, promptly when one of them lost efficacy, does not influence the operate as normal of another transmission mechanism, has improved the reliability of work greatly; Be the assembling design of branch body structure owing to what adopt in addition, when tensioning apparatus does not use, can separately deposit, be convenient to change and safeguard.
Description of drawings
Fig. 1: be the structural representation of card on the V string of the present invention;
Fig. 2: be the structural representation that blocks on the cross-arm of the present invention;
Fig. 3: for the present invention singly goes here and there the front view of jig;
Fig. 4: be the structural representation of machete card of the present invention;
Fig. 5: be the vertical view of Fig. 4;
Fig. 6: be the structural representation of closed fixture of the present invention;
Fig. 7: be the structural representation of conductor wire end jig of the present invention;
Fig. 8: be the end view of Fig. 7;
Fig. 9: the annexation figure that is used to change the single insulator string of V-type for the present invention;
Figure 10: for the present invention is used to change the annexation figure that goes here and there in the two insulator strings of V-type;
Figure 11: the annexation figure that is used to change the two insulator string guest performers of V-type for the present invention;
Figure 12: the annexation figure that is used to change long excellent type insulator for the utility model;
Figure 13: the annexation figure that is used for first insulator of restringing end for the present invention;
Figure 14: the annexation figure that is used to change horizontal single-ended first insulator for the present invention.
Wherein: card on the 1.V string, 11.V goes here and there upper plate, and 12.V goes here and there lower plate, 13. steel joint I, 14. draw-in groove I are 2. blocked on the cross-arm, block main body on 21. cross-arms; 22. steel joint II, 3. single string jig, 31. single string jig main bodys, 32. wing plates, 33. draw-in groove II, 34. plates; 4. machete card, 41. draw-in groove III, 5. closed fixture, 51. closed fixture main bodys, 52. loam cakes, 53. supports; 54. pulley, 7. conductor wire end jig, 71. conductor wire end jig main bodys, 72. turnover panel cards, 73. steel joint III, 81. conductor wire end yoke plates; 82. the cross-arm wrapper sheet, 83. traction yoke plates, 84. machine driving leading screws, 85. hydraulic means, 86. insulation pull-rods, 87.V type series board.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further to specify:
Be used for ± check man's utensil of 660kV DC power transmission line, comprise jig and tensioning apparatus, jig is installed on the both sides of insulator string, and tensioning apparatus is connected between the jig.Jig comprise on the V string block 2 on card 1, the cross-arm, single string jig 3, machete card 4, closed fixture 5, conductor wire end jig 7; Wherein single string jig, conductor wire end jig and closed fixture all adopt the TC4 titanium alloy material to make, and have the intensity height, plasticity is good, in light weight, volume is little, bearing capacity is high, be convenient to the characteristics of work high above the ground.
Card 1 is fixedly connected on the body of the tower side gold utensil hanging point angle steel on the V string, and concrete structure is as shown in Figure 1.Comprise V string upper plate 11, V string lower plate 12 and steel joint I 13; V string upper plate 11 inner faces are provided with and the corresponding draw-in groove I of body of the tower side gold utensil hanging point angle steel; An arm of angle of body of the tower side gold utensil hanging point angle steel is positioned at the draw-in groove I; Another arm of angle is between V string upper plate 11 and V string lower plate 12, and V string upper plate is connected through bolt with the two ends of V string lower plate; Be hinged with steel joint I 13 on the outer face of V string lower plate 12, the other end of steel joint I is provided with pin-and-hole, is used to connect tensioning apparatus.
Card 2 is fixedly connected on the cross-arm wrapper sheet 82 on the cross-arm, and concrete structure is as shown in Figure 2.Comprise the steel joint II 22 of blocking main body 21 and flexibly connecting with it on the cross-arm.Card comprises two triangle aluminium alloy plates of relative set on the cross-arm, and steel joint II is between two triangle aluminium alloy plates, and an end of steel joint II is through one jiao of flexible connection of bearing pin and two triangle aluminium alloy plates; The triangle aluminium alloy plate be provided with the cross-arm wrapper sheet on the corresponding pin-and-hole of connecting hole.During connection, the cross-arm wrapper sheet is plugged between two triangle aluminium alloy plates, fixes through the pin-and-hole of bolt and aluminium alloy plate.
Single string jig 3 is fixedly connected on the top of V-type series board 87 or traction yoke plate 83, and concrete structure is as shown in Figure 3.Single string jig 3 comprises single jig main body 31, wing plate 32 and plate 34 of going here and there; The both sides of single string jig main body 31 are provided with wing plate 32; The end of wing plate is provided with the pin-and-hole that connects tensioning apparatus, and plate 34 is fixedly connected on the below of single string jig main body 31, and the bottom of plate 34 is provided with draw-in groove II 33; The bottom of plate is provided with the V-type series board or draws the corresponding pin-and-hole in connecting hole position on the yoke plate; V-type series board or traction yoke plate are positioned at the draw-in groove II of plate, and through bolt it are fixedly connected with plate, can change two insulator strings of the single string of V-type simultaneously.
Machete card 4 is fixedly connected on the V-type series board 87, concrete structure such as Fig. 4 and shown in Figure 5.The hilt end of machete card 4 is provided with the pin-and-hole that is used to connect tensioning apparatus, and the cutter head end is provided with the draw-in groove III that is used to clamp the V-type series board, and the two side embayment head of cutter head end, draw-in groove III is provided with.When the machete card uses; V-type series board 87 is inserted in the draw-in groove III; The elbow of cutter head end is caught on the bolt on the V-type series board, will apply the hilt end of machete card and bolt strained pulling force in the opposite direction simultaneously, can realize the fixing of machete card and V-type series board.
Closed fixture 5 is sleeved on the steel cap of insulator, specifically ties as shown in Figure 6.Comprise closed fixture main body 51 and the loam cake 52 that is arranged on closed fixture main body top; One end of loam cake is connected with the closed fixture subject activity through bearing pin; The other end is fixedly connected with the closed fixture main body through bolt; Be provided with the through hole of housing insulation between closed fixture main body and the loam cake, insulator is positioned at through hole; The both ends of main body are provided with the pin-and-hole that is used to connect tensioning apparatus respectively, and the inboard of pin-and-hole is provided with the boom hoisting that is used to lift by crane insulator.Boom hoisting is the support 53 that is fixed on the closed fixture main body, and support is provided with the pulley 54 that is used for suspension cord.
Conductor wire end jig 7 is fixedly connected on the conductor wire end yoke plate 81, concrete structure such as Fig. 7 and shown in Figure 8.Comprise conductor wire end jig main body 71 and turnover panel card 72; Turnover panel card 72 is arranged on the top of conductor wire end jig main body; One end of turnover panel card and conductor wire end jig main body 71 flexibly connect through bearing pin; The other end is fixedly connected with conductor wire end jig main body through bolt, is provided with the through hole that holds the conductor wire end yoke plate between conductor wire end jig main body and the turnover panel card, and the conductor wire end yoke plate is in the through hole; Also be provided with on conductor wire end jig main body 71 and the turnover panel card 72 with the conductor wire end yoke plate on the corresponding hole of nut; The both ends of conductor wire end jig main body 71 are connected with respectively and are used for the steel joint III 73 that is connected with tensioning apparatus.
Tensioning apparatus is connected and blocks on the V string and single the string between the jig, and blocks on the cross-arm and single the string between the jig, and tensioning apparatus is the assembly of machine driving leading screw 84 and hydraulic means 85, and the pull-rod 86 that passes through between machine driving leading screw and the hydraulic means to insulate connects.
Embodiment 1
When the present invention is used on the direct current 660kV transmission line changing the single insulator string of V-type, adopt V string to go up to block on card 1, the cross-arm 2, singly go here and there the combining form that jig 3 and two overlaps tensioning apparatus and change, as shown in Figure 9.
At first the plate 34 of single string jig 3 band draw-in groove II 33 is plugged on the top of V-type series board 87, makes the pin-and-hole of the connecting hole aligning list string jig 3 on the V-type series board 87, penetrate bolt, single string jig 3 is fixed on the V-type series board 87; Body of the tower side gold utensil hanging point angle steel is placed between V string upper plate 11 and the V string lower plate 12; The vertical end of angle steel is installed in the draw-in groove I of V string upper plate 11; Another arm of angle of angle steel is gone here and there upper plate 11 and V with bolt with V then and is gone here and there the two ends of lower plate 12 and be fixedly connected between V string upper plate 11 and V string lower plate 12; The cross-arm wrapper sheet is plugged between two triangle aluminium alloy plates of card 2 on the cross-arm; Make the pin-and-hole on the aluminium alloy plate corresponding with the connecting hole position on the cross-arm wrapper sheet; Penetrate between pin-and-hole and the connecting hole with bolt then, make to fasten on the cross-arm to be connected on the cross-arm wrapper sheet;
Secondly; The assembling first cover tensioning apparatus; The steel joint I 13 that one end of hydraulic means 85 is movably connected in card 1 on the V string through bearing pin has an end of pin-and-hole; The other end of hydraulic means 85 is fixedly connected with an end of machine driving leading screw 84 through the insulation pull-rod, and the other end of machine driving leading screw 84 flexibly connects through the pin-and-hole of bearing pin with single string jig 3; The same then assembling second cover tensioning apparatus; One end of hydraulic means 85 is movably connected in the end that card 2 steel joint II 22 on the cross-arm have pin-and-hole through bearing pin; The other end of hydraulic means 85 is fixedly connected with an end of machine driving leading screw 84 through the insulation pull-rod, and the other end of machine driving leading screw 84 flexibly connects through bearing pin another pin-and-hole with single string jig 3.
After connect accomplishing, tighten up leading screw or primer fluid pressure device, make V string on the card and cross-arm card go here and there tensioning between the jig, insulator string is relaxed, no longer include tension force, can carry out the replacing of V-type list insulator string with single.
Embodiment 2
When the present invention was used on the direct current 660kV transmission line changing the two insulator string of V-type, the interior string of changing as required carried out the different combinations completion with the guest performer.
When in changing the two insulator strings of V-type, going here and there, adopt the combining form of card 1, machete card 4 and tensioning apparatus on the V string to change, shown in figure 10.At first V-type series board 87 is inserted in the draw-in groove III of machete card 4; The elbow of cutter head end is caught on the bolt on the V-type series board; To apply the hilt end of machete card and bolt strained pulling force in the opposite direction simultaneously, can realize the fixing of machete card and V-type series board; Card 1 and being connected of body of the tower side gold utensil hanging point angle steel on the V string with the connected mode among the embodiment 1; Assemble tensioning apparatus then; The steel joint I 13 that one end of machine driving leading screw 84 is movably connected in card 1 on the V string through bearing pin has an end of pin-and-hole; The other end of machine driving leading screw 84 is fixedly connected with an end of hydraulic means 85 through insulation pull-rod 86, and the other end of hydraulic means 85 flexibly connects the pin-and-hole of end through bearing pin and machete swaging clamp.
After connect accomplishing, tighten up leading screw or primer fluid pressure device, make tensioning between the card and machete card V string on, interior insulator string is relaxed, no longer include tension force, can change then.
When changing the two insulator string guest performer of V-type, adopt block 2 on the cross-arm, the combining form of machete card 4 and tensioning apparatus changes, and is shown in figure 11.At first V-type series board 87 is inserted in the draw-in groove III of machete card 4; The elbow of cutter head end is caught on the bolt on the V-type series board; To apply the hilt end of machete card and bolt strained pulling force in the opposite direction simultaneously, can realize the fixing of machete card and V-type series board;
Card 2 and being connected of cross-arm wrapper sheet 82 on the cross-arm with connected mode among the embodiment 1;
Then an end of machine driving leading screw 84 is movably connected in the end that card 2 steel joint II 22 on the cross-arm have pin-and-hole through bearing pin; The other end of machine driving leading screw 84 is fixedly connected with an end of hydraulic means 85 through the insulation pull-rod, and the other end of hydraulic means 85 flexibly connects the pin-and-hole of end through bearing pin and machete swaging clamp.
After connect accomplishing, tighten up leading screw or primer fluid pressure device, make tensioning between the card and machete card on the cross-arm, outer insulator string is relaxed, no longer include tension force, can change then.
Embodiment 3
When monolithic, multi-disc insulator in the middle of the present invention is used on the direct current 660kV transmission line changing, perhaps long excellent type insulator, only adopt two closed fixtures 5 and two to overlap tensioning apparatus and can accomplish, shown in figure 12.The loam cake 52 of closed fixture is opened; Make it to rotate to a side of closed fixture main body, then closed fixture is installed on the steel cap at insulator two ends, fasten loam cake to original position around bearing pin; With bolt loam cake is fixedly connected with the closed fixture main body, can closed fixture be fixed on the insulator; Machine driving leading screw and hydraulic means with tensioning apparatus is connected on the pin-and-hole at closed fixture 5 two ends again, and the pull-rod 86 that will insulate then is connected between machine driving leading screw and the hydraulic means, satisfies insulator and carries out the tensioning to insulator when longer.
After connecting completion, tighten up leading screw or primer fluid pressure device,, make insulator lax, no longer include tension force, can carry out the replacing of insulator tensioning between the closed fixture.
When insulator weight is big, adopt the boom hoisting on the closed fixture that insulator is sling, saved the input of manpower, improved the security performance of operating process.
Embodiment 4
When the present invention was used on the direct current 660kV transmission line first insulator of restringing end, the form that adopts conductor wire end jig 7, closed fixture 5 and tensioning apparatus to match is changed, and was shown in figure 13.The difference of present embodiment and embodiment 3 is: a cover closed fixture is installed on the steel cap of second insulator of conductor wire end; The turnover panel card 72 of conductor wire end jig 7 is rotated to a side of conductor wire end jig main body 71 around bearing pin; The conductor wire end yoke plate is installed between the main body and turnover panel card of conductor wire end jig 7; And the nut on the conductor wire end yoke plate is snapped in the bolt hole of conductor wire end jig, be fixedly connected with the main body of conductor wire end jig with the other end of bolt then the turnover panel card.
Embodiment 5
When the present invention was used for changing first insulator of cross-arm end on the direct current 660kV transmission line, the form that adopts single string jig, closed fixture and tensioning apparatus to match is changed, and was shown in figure 14.The difference of present embodiment and embodiment 4 is: a cover closed fixture is installed on the steel cap of second insulator of cross-arm end; The traction yoke plate is installed in the draw-in groove II of single string jig, with bolt single string jig is fixedly connected on the traction yoke plate then.

Claims (7)

1. be used for ± check man's utensil of 660kV DC power transmission line; Comprise and be used to be installed on the jig of insulator string both sides and be connected in the tensioning apparatus between the jig; It is characterized in that: said jig mainly comprises on the V string card (2) on card (1), the cross-arm, single string jig (3), machete card (4), closed fixture (5), conductor wire end jig (7); Above-mentioned single string jig, conductor wire end jig and closed fixture all adopt the TC4 titanium alloy material to make, and said tensioning apparatus is machine driving leading screw and the hydraulic means that is connected with machine driving leading screw one end;
When changing V-type list insulator string; The combining structure that card, single string jig and two overlap tensioning apparatus on card, the cross-arm on the employing V string; Wherein card (1) is fixedly connected on the body of the tower side gold utensil hanging point angle steel on the V string; Card (2) is fixedly connected on the cross-arm wrapper sheet on the cross-arm, and single string jig (3) is fixedly connected on the V-type series board, and tensioning apparatus is connected to V string on the card and single string jig and cross-arm card and list and goes here and there between the jig;
When changing the two insulator string of V-type; Adopt the combining structure that card, machete card and two overlap tensioning apparatus on card, the cross-arm on the V string; Wherein card (1) is fixedly connected on the body of the tower side gold utensil hanging point angle steel on the V string; Card (2) is fixedly connected on the cross-arm wrapper sheet on the cross-arm, and machete card (4) is installed on the V-type series board, tensioning apparatus be connected to V string on block and machete card and cross-arm on block and the machete card between;
In the middle of changing monolithic, multi-disc insulator, or during long excellent type insulator, only adopt the combining structure of two cover closed fixtures and two cover tensioning apparatus, wherein closed fixture (5) is sleeved on the insulator steel cap, tensioning apparatus is connected between the two cover closed fixtures;
When changing first insulator of cross-arm end; Adopt the combining structure of single string jig, closed fixture and two cover tensioning apparatus; Wherein single string jig (3) is fixedly connected on the traction yoke plate, and closed fixture (5) is sleeved on the insulator steel cap, and tensioning apparatus is connected between single string jig and the closed fixture;
When first insulator of restringing end; Adopt the combining structure of conductor wire end jig, closed fixture and two cover tensioning apparatus; Wherein conductor wire end jig (7) is fixedly connected on the conductor wire end yoke plate; Closed fixture (5) is sleeved on the insulator steel cap, and tensioning apparatus is connected between conductor wire end jig and the closed fixture.
2. check man's utensil of according to claim 1 being used for ± 660kV DC power transmission line; It is characterized in that: card (1) comprises V string upper plate (11) and the V string lower plate (12) that is positioned at body of the tower side gold utensil hanging point angle steel both sides on the said V string; Said V string upper plate (11) inner face is provided with and the body of the tower side gold utensil hanging point corresponding draw-in groove I of angle steel (14); An arm of angle of body of the tower side gold utensil hanging point angle steel is positioned at draw-in groove I; Another arm of angle of body of the tower side gold utensil hanging point angle steel is between V string upper plate and V string lower plate, and the two ends of V string upper plate and V string lower plate compress angle steel through bolt; The end of steel joint I (13) is hinged on the outer face of V string lower plate (12), and the other end of steel joint I is provided with the pin-and-hole that is connected with tensioning apparatus.
3. check man's utensil of according to claim 1 being used for ± 660kV DC power transmission line; It is characterized in that: card (2) comprises and blocks main body (21) and the hinged steel joint II (22) that is connected with tensioning apparatus of being used for it on the cross-arm on the said cross-arm; The card main body is provided with and cross-arm wrapper sheet connecting hole corresponding bolts hole on the cross-arm, and the bolt hole that blocks on the main body on the connecting hole of cross-arm wrapper sheet and the cross-arm is connected through bolt.
4. check man's utensil of according to claim 1 being used for ± 660kV DC power transmission line; It is characterized in that: said single string jig (3) comprises that both sides are provided with single string jig main body (31) of wing plate (32), and the end of wing plate is provided with the pin-and-hole that connects tensioning apparatus; The main body below is fixedly connected with the plate (34) of band draw-in groove II (33); The bottom of plate is provided with the V-type series board or draws the corresponding pin-and-hole in connecting hole position on the yoke plate; V-type series board or traction yoke plate are positioned at the draw-in groove II of plate, and through bolt it are fixedly connected with plate.
5. check man's utensil of according to claim 1 being used for ± 660kV DC power transmission line; It is characterized in that: the hilt end of said machete card (4) is provided with the pin-and-hole that is used to connect tensioning apparatus; The cutter head end is provided with the draw-in groove III (41) that is used to clamp the V-type series board; The two side embayment head of cutter head end, draw-in groove III is provided with, and the V-type series board inserts in the draw-in groove III, and the elbow of cutter head end is caught on the bolt on the V-type series board.
6. check man's utensil of according to claim 1 being used for ± 660kV DC power transmission line; It is characterized in that: said closed fixture (5) comprises closed fixture main body (51) and is arranged on the loam cake (52) of closed fixture main body top; One end of loam cake is connected with the closed fixture subject activity through bearing pin; The other end is fixedly connected with the closed fixture main body through bolt, in the through hole of insulator between closed fixture main body and loam cake; The both ends of said main body are provided with the pin-and-hole that is used to connect tensioning apparatus respectively; The inboard of pin-and-hole is provided with the boom hoisting that is used to lift by crane insulator; Said boom hoisting is the support (53) that is fixed on the closed fixture main body, and support is provided with the pulley (54) that is used for suspension cord.
7. check man's utensil of according to claim 1 being used for ± 660kV DC power transmission line; It is characterized in that: said conductor wire end jig (7) comprises conductor wire end jig main body (71) and is arranged on the turnover panel card (72) of conductor wire end jig main body top; One end of turnover panel card and conductor wire end jig main body (71) flexibly connect through bearing pin; The other end is fixedly connected with conductor wire end jig main body through bolt, in the through hole of conductor wire end yoke plate between conductor wire end jig main body and turnover panel card; Be provided with on said conductor wire end jig main body (71) and the turnover panel card (72) with the conductor wire end yoke plate on the corresponding hole of nut; The both ends of said conductor wire end jig main body (71) are connected with respectively and are used for the steel joint III (73) that is connected with tensioning apparatus.
CN2010106100039A 2010-12-28 2010-12-28 Overhauling tool used for +/-660kV direct-current transmission line Active CN102136695B (en)

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PCT/CN2011/083172 WO2012088986A1 (en) 2010-12-28 2011-11-29 Maintenance tool used for direct current transmission line
CA2823132A CA2823132C (en) 2010-12-28 2011-11-29 Maintenance tool used for direct current transmission line

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CN202014054U (en) 2010-12-28 2011-10-19 河北省电力公司超高压输变电分公司 Overhaul tool for dead end insulator on +/- 660kV DC power transmission line
CN102136695B (en) * 2010-12-28 2012-11-28 河北省电力公司超高压输变电分公司 Overhauling tool used for +/-660kV direct-current transmission line
CN202014055U (en) * 2010-12-28 2011-10-19 河北省电力公司超高压输变电分公司 Overhauling device of V-shaped double-string insulator for +-660KV direct current transmission line
CN103618251A (en) * 2013-11-27 2014-03-05 国家电网公司 Technology for electrified overhaul of +-800kV ultrahigh voltage direct-current transmission line
JP6590704B2 (en) * 2016-01-12 2019-10-16 株式会社中電工 Tip tool connection structure
CN111725737A (en) * 2020-07-07 2020-09-29 国网湖南省电力有限公司 Device and method for live replacement of extra-high voltage direct current v-type duplex composite insulator

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CA2823132C (en) 2014-11-25

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