CN203039292U - Clamping device for replacing linear double-string synthetic insulators of 750-kilovolt power transmission line - Google Patents
Clamping device for replacing linear double-string synthetic insulators of 750-kilovolt power transmission line Download PDFInfo
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- CN203039292U CN203039292U CN 201220680429 CN201220680429U CN203039292U CN 203039292 U CN203039292 U CN 203039292U CN 201220680429 CN201220680429 CN 201220680429 CN 201220680429 U CN201220680429 U CN 201220680429U CN 203039292 U CN203039292 U CN 203039292U
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Abstract
The utility model discloses a clamping device for replacing linear double-string synthetic insulators of a 750-kilovolt power transmission line. The two ends of an upper clamp (1) are respectively sequentially fixedly connected with one hydraulic tightening device (3), one manual leading screw (2) and the upper end of one insulating pull bar (4) in a mechanical way. The two ends of a lower clamp (5) are respectively fixedly connected with the lower end of one insulating pull bar (4) in a mechanical way. A clamping seat is arranged on the central part of the lower clamp (5). A clamping core (6) is arranged inside the clamping seat. The inner chamber shape of the clamping core (6) matches that of the lower part of a duplex socket (8). A step opening groove (14) and a U type opening groove (15) are arranged on the clamping core (6). By adopting the independent and replaceable clamping core (6), the clamping device is enabled to match the structures of the duplex sockets (8) having different models and supplied by different manufacturers. The cost is lowered. The working efficiency is improved.
Description
Technical field
The utility model relates to a kind of instrument of changing the two string of straight line synthetic insulator for 750kV extra high voltage network tangent tower.
Background technology
The 750kV extra high voltage network is the voltage levels circuit of China, long, the transregional operation transprovincially of circuit, the power equipment of the different model of a large amount of different power equipment factory puts into operation at electrical network, particularly the electric armour clamp consumption is big, the replacing frequency is many, the cost of overhaul is high, so maintenance has brought a lot of inconvenience to power construction.
Adopt the two string of straight line synthetic insulator for 750kV transmission line tangent tower more, as shown in Figure 2, the upper end of each insulator string 9 is suspended on the cross-arm 10 of tangent tower by connecting gold utensil, the lower end of two insulator strings 9 hangs on two angles on triangle yoke plate 7 tops by duplex bowl 8 respectively, lead 11 hangs over by lead frame 12 on another angle of triangle yoke plate 7 bottoms, like this tensioning under the insulator string 9 pulling force effect in the vertical direction.Straight line two string synthetic insulator deterioration or damage back generally need whole the string to change, need use the special mould clamp operation during replacing, earlier with fastening on the jig on cross-arm 10, on the duplex bowl that is stuck in down connection triangle yoke plate 7 and insulator string 98, go up card and following card with the tightener tension, distance between triangle yoke plate 7 and the cross-arm 10 is diminished, insulator string 9 suffered pulling force relax, remove the connecting pin of the connecting pin of duplex bowl 8 and insulator string 9 lower ends and cross-arm 10 and insulator string 9 upper ends again, just can easily unload the insulator string 9 that needs replacing; But at different insulator string 9, because manufacturer of institute difference, installation or replacing asynchronism(-nization), size, the shape of the duplex bowl that its lower end is connected with triangle yoke plate 78 have nothing in common with each other, so will be according to a different duplex bowls different jig of 8 outfits, each maintenance need be with the jig of multiple different size, this brings very big inconvenience for open-air, charged, work high above the ground, takes a lot of work, time-consuming, even can not change because of the instrument reason.
Summary of the invention
The purpose of this utility model is that a kind of 750kV of being applicable to transmission line of design is changed the two string of straight line synthetic insulator jig, the insulator string of convenient, fast, low-cost charged for replacement deterioration.
Design a kind of 750kV transmission line and change the two string of straight line synthetic insulator jig, comprise card, following card, two manual leading screws, two hydraulic pressure tighteners and two insulated tension poles, it is characterized in that: fixedly connected with two hydraulic pressure tightener cylinder body upper mechanical respectively in the two ends of going up card, fixedly connected with the upper mechanical of manual leading screw in hydraulic pressure tightener expansion link lower end, manually fixedly connected with the upper mechanical of insulated tension pole in the screw mandrel lower end of leading screw bottom, fixedlys connected with the lower mechanical of two insulated tension poles respectively in the two ends of following card; Be provided with deck at the middle part of blocking down, the core of the card is installed in deck, the shape of the cavity shape of the core of the card and a duplex bowl bottom is suitable, the core of the card is provided with the step open slot suitable with the bolt that is connected duplex bowl head and triangle yoke plate, also is provided with the U-shaped open slot suitable with the triangle yoke plate on the core of the card.
In the card middle lower portion one groove is arranged, the width of the shape of groove and cross-arm angle bar is suitable;
The deck at following card middle part is cylindrical, and the profile of the core of the card and this cylinder are suitable, and the excircle of the core of the card is provided with the groove of annular, in the periphery of deck one top wire hole is set, and the core of the card passes through the jackscrew screw fixedlys connected with deck.
The described material of going up card, following card and the core of the card is titanium alloy.
The utility model has satisfied the needs of the two insulator strings of 750kV transmission line charged for replacement straight line, owing to adopt independent, removable the core of the card, make jig can satisfy the duplex bowl header structure of different model, different manufacturers supply, the maintainer only need be with the core of the card of a secondary jig, plurality of specifications, just can adapt to the two string of various forms of straight lines synthetic insulator, reduce cost, improved operating efficiency.
Description of drawings
Fig. 1: change the two insulator string jigs of straight line and use the status architecture schematic diagram;
Fig. 2: the two string of 750kV straight line synthetic insulator mounting structure schematic diagram;
Fig. 3: change the two insulator string jig structural representations of straight line;
Fig. 4: go up the card structure schematic diagram;
Fig. 5: block and the core of the card combining structure front view down;
Fig. 6: block and the core of the card combining structure vertical view down;
Fig. 7: the core of the card front view;
Fig. 8: the core of the card vertical view.
Among the figure, 1. on card, 2. manual leading screw, 3. hydraulic pressure tightener, 4. insulated tension pole, 5. time card, 6. the core of the card, 7. triangle yoke plate, 8. duplex bowl head, 9. insulator string, 10. cross-arm, 11. leads, 12. lead frames, 13 jackscrews, 14. step open slots, 15.U type open slot.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
As Fig. 1, shown in Figure 3, the 750kV transmission line that the utility model relates to is changed the two string of straight line synthetic insulator jig and is comprised card 1, under block 5, two manual leading screws 2, two hydraulic pressure tighteners 3, two insulated tension poles 4, the two ends of last card 1 are bolted to connection with the cylinder body upper end of two hydraulic pressure tighteners 3 respectively, hydraulic pressure tightener 3 hydraulically extensible bar lower ends are connected to one with the form of manual leading screw 2 upper ends by welding or riveted joint, manually the lower end of the flexible screw mandrel of leading screw 2 bottoms is bolted to connection with the upper end of insulated tension pole 4, and following 5 the two ends of blocking are bolted to connection with the lower end of two insulated tension poles 4 respectively; Fixedly connected with the upper mechanical of manual leading screw 2 respectively in the lower end of each hydraulic pressure tightener 3, the manual nut in the middle of the rotation manual leading screw 2, and manually the flexible screw mandrel of leading screw 2 lower ends is flexible;
Two hydraulic pressure tighteners 3, two manual leading screws 2,4 fens two groups of two ends that are positioned at card 1 and following card 5 respectively of two insulated tension poles are blocked 1, are blocked 5 down in the connection, form square rigid frame; The manual nut of the manual leading screw 2 by adjusting the quadra both sides or the handle of hydraulic pressure tightener 3 can be adjusted card 1 and the distance between the card 5 down, and manually leading screw 2 is for greatly apart from rapid adjustment; Hydraulic pressure tightener 3 stretches hydraulic stem by the handle adjustment, is used for big distance and adjusts upward card 1 and the distance between the card 5 down, and realize finely tuning and loading.
Be provided with deck at the middle part of blocking 5 down, the core of the card 6 is installed in deck, the cavity shape of the core of the card 6 is suitable with the shape of duplex bowl 8 bottom that is connected insulator string 9 bottoms and triangle yoke plate 7 tops, connects the bottom of duplex bowl 8 of insulator string 9 and triangle yoke plate 7 and the inner chamber of the core of the card 6 and fits.
Be illustrated in figure 4 as the card structure schematic diagram, the two ends of last card 1 are provided with the hole that is connected with hydraulic pressure tightener 3, be connected by bolt with the upper end of hydraulic pressure tightener 3 oil cylinders, in card 1 middle lower portion one groove arranged, the angle bar width of the shape of groove and cross-arm 10 is suitable; The groove of going up card 1 during work is stuck on the angle bar of cross-arm 10, can not skid.
As Fig. 5, shown in Figure 6, be respectively down card and the core of the card combining structure front view and vertical view, block 5 two ends down and be provided with the hole that is connected with insulated tension pole 4, be connected by bolt with insulated tension pole 4, the deck that blocks 5 middle parts down is cylindrical, and the deck face of cylinder and cylinder bottom surface cooperate with the core of the card 6, in the periphery of deck one top wire hole is set, be used for installing the jackscrew screw, the core of the card 6 keeps fixedlying connected by jackscrew 13 and deck.
As Fig. 7, shown in Figure 8, be respectively the core of the card enlarged front view and vertical view, the external shape of the core of the card 6 is cylinder, the external diameter of cylinder and deck cylinder internal diameter are suitable, the core of the card 6 can rotate in blocking 5 deck down, the excircle of the core of the card 6 is provided with the groove of annular, cooperates the jackscrew bolt, makes the core of the card 6 fixing in deck; The inner chamber of the core of the card 6 is suitable with the shape of duplex bowl 8 bottom that are connected insulator string 9 bottoms and triangle yoke plate 7 tops with shaped upper part; The bottom of duplex bowl 8 is connected with triangle yoke plate 7 by connecting bolt, the position corresponding with this connecting bolt structure arranges a step open slot 14 on the inner chamber of the core of the card 6, step open slot 14 can envelope connects the connecting bolt of duplex bowl 8 and triangle yoke plate 7, fits fully and be not subjected to the interference of connecting bolt in the bottom that makes the core of the card 6 and duplex bowl 8; Direction perpendicular to step open slot 14 on the core of the card 6 arranges a U-shaped open slot 15, the shape of U-shaped open slot 15 and triangle yoke plate 7 are suitable, snapping in duplex bowl 8 o'clock triangle yoke plates 7 at the core of the card 6 and can be included in the open slot, fits fully and is not subjected to the interference of triangle yoke plate 7 in the bottom that makes the core of the card 6 and duplex bowl 8; By step open slot 14 and U-shaped open slot 15 are set, the pulling force of jig can act directly on the bottom of duplex bowl 8.
As shown in Figure 1, during work, adjust manual leading screw 2 and hydraulic pressure tightener 3, make card 1 and the distance increase between the card 5 down, make the two string of one of them straight line synthetic insulator place position between card 1 and the following card 5, then last card 1 is hung on the cross-arm 10, on block 1 middle lower portion groove be stuck on cross-arm 10 angle bar and do not slide; Shape according to duplex bowl 8 is selected suitable the core of the card, and the core of the card 6 is placed in the deck, rotates the core of the card 6 and makes U-shaped open slot 15 consistent with triangle yoke plate 7 directions, and it is fixing to tighten jackscrew 13; The handle of the manual nut of rotation manual leading screw 2 or operation hydraulic pressure tightener 3 makes card 1 and blocks 5 big distances down to be varied down to suitable location again, and triangle yoke plate 7 snaps in the core of the card 6 and the U-shaped open slot 15, and the core of the card 6 is near duplex bowl 8 lower end; Finely tuning hydraulic pressure tightener 3 again loads jig, this insulator string 9 is lax after the loading, removes insulator string 9 lower ends and duplex bowl 8 connecting pin that are connected, insulator string 9 and 8 disengagement of duplex bowl, remove insulator string 9 upper ends are connected gold utensil with cross-arm 10 pin again, just can take off insulator string 9; Opposite step refills new insulator string 9; Install new insulator string 9 backs and regulate hydraulic pressure tightener 3, make the jig unloading, the pulling force tensioning that the new insulator string of installing 9 is subjected to vertical direction is in running order.Adjust the position of jig, another straight line string synthetic insulator is placed between card 1 and the following card 5, same step is changed another string straight line synthetic insulator again.
Claims (3)
1.750kV transmission line is changed the two string of straight line synthetic insulator jig, comprise card (1), following card (5), two hydraulic pressure tighteners (3), two manual leading screws (2) and two insulated tension poles (4), it is characterized in that: fixedly connected with two hydraulic pressure tighteners (3) cylinder body upper mechanical respectively in the two ends of going up card (1), fixedly connected with the upper mechanical of manual leading screw (2) in hydraulic pressure tightener (3) expansion link lower end, manually fixedly connected with the upper mechanical of insulated tension pole (4) in the screw mandrel lower end of leading screw (2) bottom, fixedlys connected with the lower mechanical of two insulated tension poles (4) respectively in the two ends of following card (5); Be provided with deck at the middle part of blocking (5) down, the core of the card (6) is installed in deck, the shape of the cavity shape of the core of the card (6) and duplex bowl head (8) bottom is suitable, the core of the card (6) is provided with the step open slot (14) suitable with the connecting bolt that is connected duplex bowl head (8) and triangle yoke plate (7), also is provided with the U-shaped open slot (15) suitable with triangle yoke plate (7) on the core of the card (6).
2. 750kV transmission line according to claim 1 is changed the two string of straight line synthetic insulator jig, and it is characterized in that: in card (1) middle lower portion one groove is arranged, the width of the shape of groove and cross-arm (10) angle bar is suitable.
3. 750kV transmission line according to claim 1 is changed the two string of straight line synthetic insulator jig, it is characterized in that: the deck at card (5) middle part is cylindrical down, profile and this cylinder of the core of the card (6) are suitable, the excircle of the core of the card (6) is provided with the groove of annular, periphery at deck arranges a top wire hole, and the core of the card (6) is fixed by jackscrew (13) and deck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220680429 CN203039292U (en) | 2012-12-11 | 2012-12-11 | Clamping device for replacing linear double-string synthetic insulators of 750-kilovolt power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220680429 CN203039292U (en) | 2012-12-11 | 2012-12-11 | Clamping device for replacing linear double-string synthetic insulators of 750-kilovolt power transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203039292U true CN203039292U (en) | 2013-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220680429 Expired - Fee Related CN203039292U (en) | 2012-12-11 | 2012-12-11 | Clamping device for replacing linear double-string synthetic insulators of 750-kilovolt power transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203039292U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441445A (en) * | 2013-07-31 | 2013-12-11 | 国家电网公司 | 760kN disc-shaped insulator clamp |
| CN105375399A (en) * | 2015-11-05 | 2016-03-02 | 国网湖南省电力公司带电作业中心 | Wire tightening tool for power transmission line lead and wire tightening method |
| CN106505467A (en) * | 2016-12-07 | 2017-03-15 | 中国南方电网有限责任公司超高压输电公司百色局 | 500 last insulator special replacement tools of KV transmission line tangent tower V-type string and using method |
-
2012
- 2012-12-11 CN CN 201220680429 patent/CN203039292U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441445A (en) * | 2013-07-31 | 2013-12-11 | 国家电网公司 | 760kN disc-shaped insulator clamp |
| CN105375399A (en) * | 2015-11-05 | 2016-03-02 | 国网湖南省电力公司带电作业中心 | Wire tightening tool for power transmission line lead and wire tightening method |
| CN106505467A (en) * | 2016-12-07 | 2017-03-15 | 中国南方电网有限责任公司超高压输电公司百色局 | 500 last insulator special replacement tools of KV transmission line tangent tower V-type string and using method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20161211 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |