CN203039291U - Combined hydraulic tool for replacing linear insulator chain of 750-kilovolt power transmission line - Google Patents

Combined hydraulic tool for replacing linear insulator chain of 750-kilovolt power transmission line Download PDF

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Publication number
CN203039291U
CN203039291U CN 201220680428 CN201220680428U CN203039291U CN 203039291 U CN203039291 U CN 203039291U CN 201220680428 CN201220680428 CN 201220680428 CN 201220680428 U CN201220680428 U CN 201220680428U CN 203039291 U CN203039291 U CN 203039291U
Authority
CN
China
Prior art keywords
hydraulic
card
hydraulic pressure
transmission line
clamp
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 - Fee Related
Application number
CN 201220680428
Other languages
Chinese (zh)
Inventor
吴建宁
曹志全
严南征
吴扬
白陆
林涛
潘伟峰
曹凯
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.)
MAINTENANCE Co OF NINGXIA ELECTRIC POWER Co
Original Assignee
MAINTENANCE Co OF NINGXIA ELECTRIC POWER Co
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 MAINTENANCE Co OF NINGXIA ELECTRIC POWER Co filed Critical MAINTENANCE Co OF NINGXIA ELECTRIC POWER Co
Priority to CN 201220680428 priority Critical patent/CN203039291U/en
Application granted granted Critical
Publication of CN203039291U publication Critical patent/CN203039291U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a combined hydraulic tool for replacing a linear insulator chain of a 750-kilovolt power transmission line, which comprises an upper clamp (1), a lower clamp (5), two hydraulic tightening devices (3), two manual leading screws (2) and two insulating pull bars (4). The two hydraulic tightening devices (3) and the two manual leading screws (2) are connected to form two combined hydraulic telescopic rods. The upper clamp (1), the combined hydraulic telescopic rods, the insulating pull bars (4) and the lower clamp (5) are sequentially mechanically fixedly connected. The cylinder body of each hydraulic tightening device (3) is connected on one hydraulic pump (31) through an oil pipe (30). A pressurization handle (32) is arranged on each hydraulic pump (31). By adopting the combined hydraulic telescopic rods, the tool makes the telescoping adjusting range between the upper clamp (1) and the lower clamp (5) enlarged. The safety and the reliability of the tool are thus enhanced.

Description

The 750kV transmission line is changed straight line insulator string assembled hydraulic instrument
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
For the 750kV transmission line tangent tower pair string synthetic insulators that adopt 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 change bunch of insulator 9, adjusting range between jig blocks up and down is very big, often need more than 400 millimeters, so the flexible stroke requirement of tightener is very big, if single hydraulic pressure tightener of using, because stroke is too big, the diameter of hydraulic stem needs just can meet the demands very greatly, if single with manual leading screw as tightener, then the diameter of leading screw must be very big, jig is just very heavy like this, inconvenient work high above the ground.
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 straight line insulator string assembled hydraulic instrument, the insulator string of convenient, fast, low-cost charged for replacement deterioration.
Design a kind of 750kV transmission line and change straight line insulator string assembled hydraulic instrument, comprise card, following card, two manual leading screws, two hydraulic pressure tighteners and two insulated tension poles, it is characterized in that: be connected to form two cover assembled hydraulic expansion links by two groups of hydraulic pressure tighteners and two groups of manual leading screws, fixedly connected with the two ends of last card respectively in every cover assembled hydraulic expansion link upper end, fixedlying connected with the insulated tension pole upper end respectively in every cover assembled hydraulic expansion link lower end, fixedlys connected with the lower end of two insulated tension poles respectively in the two ends of following card; Described hydraulic pressure tightener cylinder body is connected independently on the hydraulic pump by oil pipe, and hydraulic pump is provided with pressurized handgrip.
Described hydraulic pressure tightener lower end hydraulically extensible bar is fixedly connected by welding with manual leading screw upper end, and hydraulic pressure tightener upper end cylinder body and last card are bolted to connection, and manually the upper end of the flexible screw mandrel in leading screw lower end and insulated tension pole is bolted to connection.
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 manual leading screw and hydraulic pressure tightener to be combined to form the assembled hydraulic expansion link, guarantee the telescopic adjustment scope between last card and the following card, improved fail safe and the reliability of instrument.
Description of drawings
Fig. 1: combination tool uses the status architecture schematic diagram;
Fig. 2: the two string of 750kV straight line synthetic insulator mounting structure schematic diagram.
Among the figure, 1. on card, 2. manual leading screw, 3. hydraulic pressure tightener, 30. oil pipes, 31. hydraulic pumps, 32. pressurized handgrip, 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.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
As shown in Figure 1, the 750kV transmission line that the utility model relates to is changed straight line insulator string assembled hydraulic instrument, comprise 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; The cylinder body of described hydraulic pressure tightener 3 is connected independently on the hydraulic pump 31 by oil pipe 30, hydraulic pump is provided with pressurized handgrip 32, manual pressure handle 32 manually provides power for hydraulic pump 31, control pressurization and pressure release, by oil pipe 30 hydraulic oil is transported to cylinder body, makes the hydraulically extensible bar of hydraulic pressure tightener 3 flexible.
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 are connected insulator string 9 and triangle yoke plate 7.
Two hydraulic pressure tighteners 3, two manual leading screws 2,4 fens two groups of both sides 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 pressurized handgrip 32 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 is adjusted by pressurized handgrip 32 hydraulic stem is stretched, and is used for big distance and adjusts upward card 1 and the distance between the card 5 down, and can realize fine setting and loading.
Last card 1, block 5 materials with LC4 or titanium alloy down, in light weight, the intensity height.The exhausted high-intensity plastic insulation material of gorgeous pull bar 4, hydraulic pressure tightener 3, tyre hydraulic cylinder 31 and manual leading screw 2 can be used conventional steel alloy versatile material.
As shown in Figure 1, during work, adjust the pressurized handgrip 32 of manual nut and the hydraulic pressure tightener 3 of manual leading screw 2, 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; The pressurized handgrip 32 of the manual nut of rotation manual leading screw 2 or operating hydraulically operated tightener 3 again, make card 1 and down card 5 big distances be varied down to suitable location, triangle yoke plate 7 and duplex bowl 8 snaps in down in the cavity of the core of the card 6 that blocks 5 middle parts; During adjustment, because hydraulic cylinder 31 is independent structures in addition, can be placed on suitable location on cross-arm or the shaft tower, handled easily; Manual operation pressurized handgrip 32, fine setting hydraulic pressure tightener 3 loads jig, this insulator string 9 is lax after the loading, remove 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 (2)

1.750kV transmission line is changed straight line insulator string assembled hydraulic instrument, 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: be connected to form two cover assembled hydraulic expansion links by two groups of hydraulic pressure tighteners (3) and two groups of manual leading screws (2), fixedly connected with the two ends of last card (1) respectively in every cover assembled hydraulic expansion link upper end, fixedlying connected with insulated tension pole (4) upper end respectively in every cover assembled hydraulic expansion link lower end, fixedlys connected with the lower end of two insulated tension poles (4) respectively in the two ends of following card (5); The cylinder body of described hydraulic pressure tightener (3) is connected independently on the hydraulic pump (31) by oil pipe (30), and hydraulic pump (31) is provided with pressurized handgrip (32).
2. 750kV transmission line according to claim 1 is changed straight line insulator string assembled hydraulic instrument, it is characterized in that: described hydraulic pressure tightener (3) lower end hydraulically extensible bar is fixedly connected by welding with manual leading screw (2) upper end, hydraulic pressure tightener (3) upper end cylinder body and last card (1) are bolted to connection, and manually the upper end of the flexible screw mandrel in leading screw (2) lower end and insulated tension pole (4) is bolted to connection.
CN 201220680428 2012-12-11 2012-12-11 Combined hydraulic tool for replacing linear insulator chain of 750-kilovolt power transmission line Expired - Fee Related CN203039291U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220680428 CN203039291U (en) 2012-12-11 2012-12-11 Combined hydraulic tool for replacing linear insulator chain of 750-kilovolt power transmission line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220680428 CN203039291U (en) 2012-12-11 2012-12-11 Combined hydraulic tool for replacing linear insulator chain of 750-kilovolt power transmission line

Publications (1)

Publication Number Publication Date
CN203039291U true CN203039291U (en) 2013-07-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220680428 Expired - Fee Related CN203039291U (en) 2012-12-11 2012-12-11 Combined hydraulic tool for replacing linear insulator chain of 750-kilovolt power transmission line

Country Status (1)

Country Link
CN (1) CN203039291U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

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GR01 Patent grant
C14 Grant of patent or utility model
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