CN104538129A - Synchronous hoisting type duplex insulator string - Google Patents
Synchronous hoisting type duplex insulator string Download PDFInfo
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- CN104538129A CN104538129A CN201410807110.9A CN201410807110A CN104538129A CN 104538129 A CN104538129 A CN 104538129A CN 201410807110 A CN201410807110 A CN 201410807110A CN 104538129 A CN104538129 A CN 104538129A
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Abstract
The invention discloses a synchronous hoisting type duplex insulator string which is used for power transmission line construction. The synchronous hoisting type duplex insulator string comprises two parallel insulator string bodies with the lower ends connected together through a connecting yoke plate. Each insulator string body comprises a hoisting fitting string and an insulator set which are sequentially connected from top to bottom, and further comprises a hoisting device which is arranged between two traction plates in the hoisting fitting string, wherein the hoisting device comprises a traction groove with the U-shaped section and a cylindrical hoisting rod arranged in the traction groove to be matched with the traction groove, traction holes are correspondingly formed in the middles of a front groove plate and a rear groove plate of the traction groove, the hoisting rod penetrates through the traction plates, and the ends, located outside the traction plates, of the hoisting rod are provided with threads and fixing nuts matched with the threads. The synchronous hoisting type duplex insulator string has the advantages of being novel in design and simple in structure; the two insulator string bodies and the hoisting fitting string of the duplex insulator string can be simultaneously hoisted to preset installation positions, and the two insulator string bodies can be prevented from colliding with each other or being twisted together in the hoisting process.
Description
Technical field
The present invention relates to electric power transmission line construction field, especially a kind of can the twin insulator strings of synchronous hoisting.
Background technology
Insulator string is the most general product of current transmission line stringing, and bear the insulator string group of a wire or bundle conductor tension force or gravity, supporting electric armour clamp uses together, needs several products to be parallel to come together to reach pulling tension requirements according to construction.To be useful in the 400kN rod insulator double strain string in 500kV line project, this strain insulator-string is that quadripartion is directly jumped, article two, strain insulator string lower end is connected by yoke plate, yoke plate is as a whole, lifting cannot be decomposed in installation process, the 1000kg and this duplex strain insulator string always weighs, this brings certain difficulty to the installation exercise of duplex strain insulator string, when mounted, need two insulator strings of duplex strain insulator string to rise to winch to installation site simultaneously, must take measures again to prevent two insulator strings from collision mutually occurring, because once there is collision mutually in two insulator strings in lifting process, porcelain insulator surface can be made to occur damaged and to peel off or inside cracks, the tensile strength of the insulator after breakage and insulation property all can be had a strong impact on, also need if desired again to change insulator string, affect normally carrying out of construction operation, also larger economic loss is brought.
Summary of the invention
The technical issues that need to address of the present invention be to provide a kind of can the twin insulator strings of synchronous hoisting, namely can be completed the lifting of twin insulator strings by a towing pad, can avoid two insulator strings in lifting process that collision mutually occurs.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
Synchronization onwards hanging twin insulator strings, comprise two string side-by-side parallel arrange, lower end is by the insulator string connecting yoke plate and link together, described insulator string comprises the suspension hardware string and insulation subgroup that connect successively from top to bottom, also comprise the boom hoisting being arranged on and hanging in hardware string between two towing plates, described boom hoisting comprises cross section to be U-shaped traction grooved and to be arranged on the cylindrical lifting boom matched with traction grooved in traction grooved, before described traction grooved, the middle part correspondence of drop end is provided with towing pad, described lifting boom is through towing plate and the hold-down nut being positioned at the end outside towing plate and arranging screw thread and match with screw thread.
Further improvement of the present invention is: the forward and backward frid of described traction grooved is symmetrically welded with the U-shaped reinforcement matched, and the quantity of described reinforcement is 2 ~ 6.
Further improvement of the present invention is: the end described lifting boom is positioned at outside hold-down nut arranges retaining pin.
Further improvement of the present invention is: described traction grooved adopts thickness to be that the steel plate of 6mm is through thermal flexure technique global formation, described reinforcement is φ 8 reinforcing bar, described lifting boom is M27 screw rod, and the material of described traction grooved, reinforcement and lifting boom is Q235 steel.
Further improvement of the present invention is: described suspension hardware string comprises the hardware connected successively from top to bottom, U-shaped link, the adjustment of DB type plate, the parallel link plate of P type first, towing plate, the parallel link plate of P type second, Q type ball-eye.
Further improvement of the present invention is: described insulation subgroup comprises 2 ~ 4 insulators connected successively, and the lower end of described insulation subgroup is connected to the upper end connecting yoke plate by bowl bulb hanging ring.
Further improvement of the present invention is: the lower end of described connection yoke plate connects hanging wire gold utensil by right angle link plate.
Further improvement of the present invention is: described towing plate is QY type towing plate, and described connection yoke plate is LS type yoke plate.
Owing to have employed technique scheme, the technological progress that the present invention obtains is:
Synchronization onwards hanging twin insulator strings of the present invention, there is modern design, the feature that structure is simple and clear, two insulator strings of twin insulator strings can be lifted by crane simultaneously and hang hardware string to predetermined installation site, also can prevent two insulator strings in lifting process from colliding or being intertwined, after mounting, also can quickly boom hoisting be removed from twin insulator strings.
The present invention installs boom hoisting on suspension hardware string, lifting boom is adopted to be connected on towing plate, again U-shaped traction grooved is enclosed within the lifting boom between towing plate, with nut, towing plate and traction grooved, lifting boom are fixed together, so just can play the effect of rigid support between two insulator strings, prevent two string strain insulator-string gold utensils in lifting process from colliding.The lifting boom that M27 screw rod is made can bear the weight of gold utensil on twin insulator strings, adopt 6mm steel plate can wrap lifting boom through the U-shaped traction grooved lower end of thermal flexure technique global formation, increase lifting surface area, reinforcement also further enhancing the strain insulator ability of traction grooved, meets the stressed requirement of 20kN through pull test.Retaining pin can prevent nut in lifting process from coming off, and ensures the safety of operation process.
Accompanying drawing explanation
Fig. 1 is using state figure of the present invention;
Fig. 2 is the perspective view of boom hoisting of the present invention;
Fig. 3 is the front view of boom hoisting of the present invention;
Fig. 4 is the A-A cutaway view of Fig. 2 of the present invention;
Fig. 5 is the B-B cutaway view of Fig. 2 of the present invention;
Wherein, 1, connect yoke plate, 1-1, right angle link plate, 2, insulator string, 2-1, hang hardware string, 2-1-1, towing plate, 2-1-2, hardware, 2-1-3, U-shaped link, 2-1-4, adjustment plate, 2-1-5, first parallel link plate, 2-1-1, towing plate, 2-1-6, second parallel link plate, 2-1-7, ball-eye, 2-2, insulation subgroup, 2-2-1, bowl bulb hanging ring, 3, traction grooved, 3-1, frid, 3-2, towing pad, 3-3, reinforcement, 4, lifting boom, 4-1, screw thread, 4-2, hold-down nut, 4-3, retaining pin, 5, hanging wire gold utensil, 6, lifting rope.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further details.
Synchronization onwards hanging twin insulator strings of the present invention, comprise that two string side-by-side parallel are arranged, lower end by the insulator string 2 connecting yoke plate 1 and link together, insulator string 2 comprises the suspension hardware string 2-1 and insulation subgroup 2-2 that connect successively from top to bottom.Specifically as shown in Figure 1.
The suspension hardware string 2-1 of insulator string 2 comprises the hardware 2-1-2 connected successively from top to bottom, the parallel link plate 2-1-5 of U-shaped link 2-1-3, DB type adjustment plate 2-1-4, P type first, towing plate 2-1-1, P type second parallel link plate 2-1-6, Q type ball-eye 2-1-7, hangs hardware string 2-1 and is used for suspension insulator group 2-2.Insulation subgroup 2-2 comprises 2 ~ 4 insulators connected successively, and the lower end of insulation subgroup 2-2 is connected to the upper end connecting yoke plate 1 by bowl bulb hanging ring 2-2-1.The lower end connecting yoke plate 1 connects hanging wire gold utensil 5 by right angle link plate 1-1.Towing plate 2-1-1 is QY type towing plate, and connecting yoke plate 1 is LS type yoke plate.During embody rule, be used in the difference on strain tower or tangent tower according to insulator string 2, select number and the hanging wire gold utensil 5 of insulator.Specifically as shown in Figure 1.
Hang in hardware string 2-1 and between two towing plate 2-1-1, boom hoisting is set, boom hoisting comprises traction grooved 3, lifting boom 4, the cross section of traction grooved 3 is U-shaped, adopt thickness to be that the steel plate of 6mm is through thermal flexure technique global formation, the middle part correspondence of the forward and backward frid 3-1 of traction grooved 3 is provided with towing pad 3-2, the lifting rope 6 of tractive is set in towing pad 3-2, the outer surface of traction grooved 3 is symmetrically welded with the U-shaped reinforcement 3-3 matched, the quantity of reinforcement 3-3 is 4, and reinforcement 3-3 is φ 8 reinforcing bar.Cylindrical lifting boom 4 is set in traction grooved 3, the diameter of lifting boom 4 and the width of rebate of traction grooved 3 match, lifting boom 4 is M27 screw rod, the two ends of lifting boom 2 are each passed through two towing plate 2-1-1 on double strain string, the hold-down nut 4-2 that lifting boom 4 end be positioned at outside towing plate 2-1-1 arranges screw thread 4-1 and matches with screw thread 4-1, lifting boom 4 end outside hold-down nut 4-2 arranges retaining pin 4-3.The material of traction grooved 3, reinforcement 3-3 and lifting boom 4 is Q235 steel.Specifically see shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5.
Using method of the present invention is: first installed by the suspension hardware string 2-1 of synchronization onwards hanging twin insulator strings and insulation subgroup 2-2 and put in order and connect suitable hanging wire gold utensil 5.Again boom hoisting is installed: by the two ends of lifting boom 4 through the lifting hole(eyelet) on towing plate 2-1-1, and the hold-down nut 4-2 that screws on; Traction grooved 3 is enclosed within the lifting boom 4 between towing plate 2-1-1, the inner bottom surface of traction grooved 3 contacts with the surface of lifting boom 4, and the hold-down nut 4-2 at fixed hoisting bar 4 two ends, make traction grooved 3, lifting boom 4, towing plate 2-1-1 three is fixed as one, retaining pin 4-3 is inserted lifting boom 4 two ends.Finally lifting rope 6 is penetrated towing pad 3-2, can slinging work be carried out.After twin insulator strings install, boom hoisting is removed from towing plate 2-1-1.
Claims (8)
1. synchronization onwards hanging twin insulator strings, comprise two string side-by-side parallel arrange, lower end is by the insulator string (2) connecting yoke plate (1) and link together, described insulator string (2) comprises the suspension hardware string (2-1) and insulation subgroup (2-2) that connect successively from top to bottom, it is characterized in that: also comprise the boom hoisting being arranged on and hanging in hardware string (2-1) between two towing plates (2-1-1), described boom hoisting comprises cross section to be U-shaped traction grooved (3) and to be arranged on the cylindrical lifting boom (4) matched with traction grooved (3) in traction grooved (3), before described traction grooved (3), the middle part correspondence of drop end (3-1) is provided with towing pad (3-2), the hold-down nut (4-2) that described lifting boom (4) arranges screw thread (4-1) through towing plate (2-1-1) and in the end being positioned at towing plate (2-1-1) outside and matches with screw thread (4-1).
2. synchronization onwards hanging twin insulator strings according to claim 1, is characterized in that: the forward and backward frid (3-1) of described traction grooved (3) is symmetrically welded with the U-shaped reinforcement (3-3) matched, and the quantity of described reinforcement (3-3) is 2 ~ 6.
3. the synchronization onwards hanging twin insulator strings according to any one of claim 1 or 2, is characterized in that: the end described lifting boom (4) being positioned at hold-down nut (4-2) outside arranges retaining pin (4-3).
4. synchronization onwards hanging twin insulator strings according to claim 3, it is characterized in that: described traction grooved (3) adopts thickness to be that the steel plate of 6mm is through thermal flexure technique global formation, described reinforcement (3-3) is φ 8 reinforcing bar, described lifting boom (4) is M27 screw rod, and the material of described traction grooved (3), reinforcement (3-3) and lifting boom (4) is Q235 steel.
5. synchronization onwards hanging twin insulator strings according to claim 1, is characterized in that: described suspension hardware string (2-1) comprises the hardware (2-1-2) connected successively from top to bottom, U-shaped link (2-1-3), DB type adjustment plate (2-1-4), the parallel link plate of P type first (2-1-5), towing plate (2-1-1), the parallel link plate of P type second (2-1-6), Q type ball-eye (2-1-7).
6. the synchronization onwards hanging twin insulator strings according to any one of claim 1 or 5, it is characterized in that: described insulation subgroup (2-2) comprises 2 ~ 4 insulators connected successively, the lower end of described insulation subgroup (2-2) is connected to the upper end connecting yoke plate (1) by bowl bulb hanging ring (2-2-1).
7. synchronization onwards hanging twin insulator strings according to claim 6, is characterized in that: the lower end of described connection yoke plate (1) connects hanging wire gold utensil (5) by right angle link plate (1-1).
8. synchronization onwards hanging twin insulator strings according to claim 6, is characterized in that: described towing plate (2-1-1) is QY type towing plate, and described connection yoke plate (1) is LS type yoke plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410807110.9A CN104538129B (en) | 2014-12-23 | 2014-12-23 | Synchronous hoisting type duplex insulator string |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410807110.9A CN104538129B (en) | 2014-12-23 | 2014-12-23 | Synchronous hoisting type duplex insulator string |
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| CN104538129A true CN104538129A (en) | 2015-04-22 |
| CN104538129B CN104538129B (en) | 2017-01-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107512655A (en) * | 2017-08-22 | 2017-12-26 | 江苏省送变电公司 | A kind of hanging method of ultralong overweight wire insulation substring |
| CN109580212A (en) * | 2019-01-25 | 2019-04-05 | 广东电网有限责任公司 | A kind of cross arm lateral side clamp tension test tool |
| CN109786046A (en) * | 2018-12-27 | 2019-05-21 | 国网湖南省电力有限公司 | 500kV line thunder protection anti-ice-flashing composite insulator |
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| CN103871693A (en) * | 2014-03-05 | 2014-06-18 | 国家电网公司 | 550 kN trigeminy V-shaped pendent insulator string for UHV (Ultra High Voltage) transmission line |
| CN103915783A (en) * | 2014-04-19 | 2014-07-09 | 国家电网公司 | Universal type suspension wire clamp for 66 kV-220 kV tip cross arm |
| CN204348450U (en) * | 2014-12-23 | 2015-05-20 | 国家电网公司 | Synchronization onwards hanging twin insulator strings |
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| JP4233275B2 (en) * | 2002-06-25 | 2009-03-04 | 旭テック株式会社 | Double tension device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107512655A (en) * | 2017-08-22 | 2017-12-26 | 江苏省送变电公司 | A kind of hanging method of ultralong overweight wire insulation substring |
| CN107512655B (en) * | 2017-08-22 | 2019-08-13 | 江苏省送变电公司 | A kind of hanging method of ultralong overweight wire insulation substring |
| CN109786046A (en) * | 2018-12-27 | 2019-05-21 | 国网湖南省电力有限公司 | 500kV line thunder protection anti-ice-flashing composite insulator |
| CN109786046B (en) * | 2018-12-27 | 2023-12-12 | 国网湖南省电力有限公司 | 500kV line lightning-proof anti-icing flashover composite insulator |
| CN109580212A (en) * | 2019-01-25 | 2019-04-05 | 广东电网有限责任公司 | A kind of cross arm lateral side clamp tension test tool |
| CN109580212B (en) * | 2019-01-25 | 2024-02-13 | 广东电网有限责任公司 | Cross arm side fixture tensile test instrument |
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| CN104538129B (en) | 2017-01-11 |
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