CN104376934B - A kind of light ice formation V-type suspension string of compact three - Google Patents

Abstract

The invention provides a compact triple V-shaped suspension string for light ice areas, which includes a suspension connecting plate and two suspension strings distributed in a "V" shape. The suspension string includes composite insulator strings connected by composite insulators. The two ends of the insulator string are respectively connected to the iron tower cross arm and the suspension connecting plate, and the composite insulator string of one triple suspension string and the suspension connecting plate are provided with connecting plate 1 and Z-type right-angle hanging plate 2 in turn, and the other triple hanging string Between the composite insulator string and the hanging connecting plate, connecting plate 2 and right-angle hanging plate are arranged successively. Compared with the prior art, the compact triple V-shaped suspension string for light ice areas provided by the present invention improves the structural strength of the fittings and the overall strength of the suspension string, ensuring the normal operation of the transmission line; at the same time, it effectively shortens the length of the suspension The length of the string, thereby reducing the height of the transmission tower, reducing the manufacturing, transportation and construction costs of fittings and towers.

Description

A compact triple V-shaped hanging string for light ice areas

technical field

The invention relates to a hanging string, in particular to a compact triple V-shaped hanging string for light ice areas.

Background technique

As a kind of iron tower structure, linear tower is widely used in UHV overhead transmission lines to support conductors and ground wires. It is generally used between the tension sections of the line and is a type of tower used in a large number of transmission lines. The suspension insulator string is an important part used on the straight tower, which is used to connect the wire and the iron tower on the straight tower and maintain the electrical insulation between the transmission wire and the iron tower.

The characteristic of the suspension insulator string is to bear the gravity load from the conductor, the horizontal wind load, and its own gravity load, and maintain the electrical insulation between the transmission conductor and the iron tower itself. At present, in the field of general UHV transmission lines, the suspension insulator strings are generally composed of composite insulators made of connecting fittings and composite materials through reasonable connections. It is determined after electrical insulation calculation, mechanical calculation and comprehensive comparison of safety and economy.

In the installation of the suspension insulator strings of the transmission line, according to the needs, there are various installation methods such as vertically installed I strings, obliquely installed V-shaped strings, Y-shaped strings, and multi-string parallel installations. Different installation methods will affect the pollution flashover characteristics of the insulators. produce different effects. At present, most of the suspension strings of high-voltage DC lines at home and abroad adopt I string and V string, and the operation is good. The design and use of I string and V string have rich experience.

With the construction of UHV, the voltage level is getting higher and higher, it is necessary to increase the cross section of the wire and the number of split wires, which will inevitably increase the use of wires, the tonnage of the fitting string, the size and tonnage of the fittings, and the iron tower. The structural size and the width of the line corridor, etc., thus increasing the project investment.

Therefore, it is necessary to provide a compact triple V-shaped suspension string, which can optimize the structural size and connection form of the fittings in the suspension string while ensuring the engineering requirements, which not only reduces the manufacturing, transportation and construction costs of the fittings, but also Can reduce tower investment.

Contents of the invention

In order to solve the above problems, the present invention provides a compact triple V-shaped hanging string for light ice areas. The mature processing technology greatly improves the structural strength of the fittings and the overall strength of the fittings connected as a hanging string, ensuring power transmission The normal operation of the line; at the same time, by optimizing the structure of the fittings and their connection methods, the length of the hanging string is effectively shortened, thereby reducing the height of the transmission tower and reducing the manufacturing, transportation and construction costs of the fittings and the iron tower. Very good value for money.

The object of the present invention is to adopt following technical scheme to realize:

The present invention provides a compact triple V-shaped suspension string for light ice areas, which includes a suspension connecting plate 15 and two triple suspension strings distributed in a "V" shape. The triple suspension string includes composite insulators 10 connected in series The composite insulator string formed, the two ends of the composite insulator string are respectively connected to the iron tower cross arm and the suspension connecting plate 15 through connectors;

The improvement is that: a trunnion hanging plate 1, a U-shaped hanging ring-2, a DB adjustment plate 3, and a Z-shaped right-angle hanging plate are arranged in sequence between the composite insulator strings of the two triple suspension strings and the cross-arm of the iron tower. One 4. LT-type connecting plate 5, parallel hanging plate 6, LZ-type connecting plate 7, ZBD-type right-angle hanging plate 8 and U-shaped hanging ring two 9; one of the composite insulator strings of the triple suspension string and the hanging connecting plate 15 The first connecting plate 12 and the second Z-shaped right-angle hanging plate 13 are arranged in sequence between them, and the second connecting plate 18 and the right-angle hanging plate 19 are arranged in sequence between the composite insulator string of the other said triple suspension string and the hanging connecting plate 15 .

Wherein, the trunnion hanging plate 1 is a plate-like structure with a hollow circular shaft horizontally provided at one end, and an opening is horizontally provided at the other end, and the direction of the opening is perpendicular to the axial direction of the hollow circular shaft. A stud bolt 101 is provided, and the two ends of the stud bolt 101 are sequentially provided with washers, nuts and closed pins from the inside to the outside; the opening is connected with the U-shaped hanging ring 1 through bolts.

Wherein, the round holes provided at the intersection of the two straight line edges of the DB adjustment plate 3 are arranged in the U-shaped hanging ring-2, and the round holes arranged at intervals along its arc edge are connected with the Z-shaped right-angle hanging plate-4.

Wherein, the two ends of the Z-type right-angle hanging plate-4 are respectively provided with grooves, the slotting directions of the grooves are perpendicular to each other, and the two side walls of the groove are respectively provided with through holes along the same horizontal direction; the grooves The bolts are respectively connected with the circular holes arranged at intervals on the arc-shaped side of the DB adjustment plate 3 and the LT-type connecting plate 5 .

Wherein, the two ends of the parallel hanging plate 6 are respectively connected with the LT-type connecting plate 5 and the LZ-type connecting plate 7 through bolts.

Wherein, the ZBD type right-angle hanging plate 8 is a plate-shaped structure with a U-shaped groove at one end, and a round hole at the other end; the opening direction of the round hole is consistent with the slotting direction of the U-shaped groove, The two side walls of the U-shaped groove are provided with through holes perpendicular to the opening direction of the circular hole along the same horizontal direction; the LZ-type connecting plate 7 is set in the U-shaped groove, and the ZBD-type right-angled hanging plate 8 The circular hole is connected with U-shaped hanging ring 29 by bolts.

Among them, one end of the connecting plate 12 is provided with holes 1201, 2 1202, and 3 1203 respectively connected in series with composite insulators at equal intervals along the same straight line, and the other end is provided with a hole 1203 located on the same suspension line as the hole 3 1203. The hole four 1204 that Z-type right-angle hanging plate two 13 connects.

Wherein, a voltage equalizing ring 11 is provided between the composite insulators 10, and the voltage equalizing ring 11 is composed of two semi-rings arranged symmetrically. The first connecting plate 12 and the second connecting plate 18 are respectively connected through the bracket 1101 , and a loosening washer 1105 and a washer 1106 are respectively provided between the bracket 1101 and the first connecting plate 12 and the second connecting plate 18 .

Wherein, one end of the Z-shaped right-angled hanging plate 13 and the right-angled hanging plate 19 are respectively connected with the first connecting plate 12 and the second connecting plate 18, and the other ends are respectively arranged on the hanging connecting plate 15.

Wherein, the hanging connecting plate 15 is provided with connecting holes for connecting the hanging clamps 14 along the same circumference, and the center of the hanging connecting plate 15 is provided with a weight 16 .

Wherein, the suspension clamp 14 includes a pressing plate 1401 disposed inside it and a UB hanging plate 1403 disposed on the top thereof; the pressing plate 1401 and the suspension clamp 9 are connected by fastening bolts 1402; the UB hanging plate 1403 is connected with the hanging connecting plate 15 by bolts.

Wherein, a flat washer 1407 and a spring washer 1408 are provided between the pressing plate 1401 and the fastening bolt 1402 .

Wherein, the power transmission wire is arranged in the cavity formed by the pressing plate 1401 and the suspension clamp 14 .

Wherein, a wire wrapping 17 is provided on the surface of the power transmission wire.

Compared with the closest prior art, the present invention has the following beneficial effects:

1. The compact triple V-shaped hanging string for light ice areas provided by the present invention adopts mature processing technology, which greatly improves the structural strength of the fittings and the overall strength after the fittings are connected into a hanging string, ensuring the normal operation of the transmission line .

2. The compact triple V-shaped suspension string for light ice area provided by the present invention effectively shortens the length of the suspension string by optimizing the structure of the fittings and its connection mode, thereby reducing the height of the power transmission tower and the fittings And the manufacturing, transportation and construction costs of the iron tower have good economic benefits.

3. The compact triple V-shaped suspension series for light ice areas provided by the present invention adopts the new structure of the joint plate 1, and at the same time, the upper end of the triple suspension series is changed into two joints through the LZ-type joint plate, which optimizes the structure of the suspension series and reduces the Hanging skewer weight as well as skewer length.

4. The compact triple V-shaped hanging string for light ice areas provided by the present invention improves the strength level of the right-angled hanging board at the weak point of the hanging string on the left side (that is, it is higher than the Z-shaped right-angled hanging board at the same position on the right side by one Intensity level), during construction, the left hanging string is placed outside the tower body of the transmission tower. The hanging string is broken first, which ensures that the broken string will not cause secondary damage due to hitting the iron tower.

Description of drawings

Figure 1: Schematic diagram of the structure of the compact triple V-shaped suspension string for light ice areas provided by the present invention;

Fig. 2: the schematic structural view of one of the triple hanging strings provided by the present invention;

Fig. 3: The structure schematic diagram of another triple hanging string provided by the present invention

Fig. 4: the structure schematic diagram of the suspension wire clip suspension transmission wire that the present invention provides;

Fig. 5: the schematic diagram of the front view structure of the trunnion hanging plate provided by the present invention;

Fig. 6: The side view structural schematic diagram of the trunnion hanging plate provided by the present invention;

Fig. 7: the schematic diagram of the front structure of the U-shaped hanging ring provided by the present invention;

Figure 8: a schematic diagram of the side view structure of the U-shaped hanging ring provided by the present invention;

Fig. 9: Schematic diagram of the structure of the DB adjustment plate provided by the present invention;

Fig. 10: The schematic diagram of the front view structure of the Z-type right-angle hanging board provided by the present invention;

Fig. 11: a schematic diagram of the side view structure of the Z-type right-angle hanging board provided by the present invention;

Figure 12: a schematic structural view of the LT-type connecting plate provided by the present invention;

Figure 13: a schematic diagram of the front view of the parallel hanging board provided by the present invention;

Figure 14: a schematic side view of the parallel hanging board provided by the present invention;

Figure 15: a schematic structural view of the LZ type connecting plate provided by the present invention;

Fig. 16: The schematic diagram of the front view structure of the ZBD type right-angle hanging board provided by the present invention;

Figure 17: a schematic diagram of the side view structure of the ZBD type right-angle hanging board provided by the present invention;

Figure 18: a schematic top view of the pressure equalizing ring provided by the present invention;

Figure 19: Schematic diagram of the front structure of the pressure equalizing ring provided by the present invention;

Figure 20: a schematic structural view of the connecting plate provided by the present invention;

Figure 21: a schematic diagram of the front structure of the suspension clamp provided by the present invention;

Figure 22: a schematic side view of the suspension clamp provided by the present invention;

Figure 23: a schematic structural view of the suspension connecting plate provided by the present invention;

Figure 24: Schematic diagram of the structure of the wire wrap provided by the present invention;

Figure 25: Schematic diagram of the front structure of the hammer provided by the present invention;

Figure 26: Schematic diagram of the side view structure of the hammer provided by the present invention;

Among them: 1. Trunnion hanging plate; 2. U-shaped hanging ring one; 3. DB adjustment plate; 4. Z-type right-angle hanging plate one; 5. LT-type connecting plate; 6. Parallel hanging plate; 7. LZ-type connecting plate 8. ZBD type right-angle hanging plate; 9. Two U-shaped hanging rings; 10. Composite insulator; 11. Pressure equalizing ring; 15. Hanging connecting plate; 16. Heavy hammer; 17. Wire wrapping; 18. Connecting plate two; 19. Right-angle hanging plate; 101. Stud bolt; 102. Washer; 103. Nut; 104. Blind pin; 201, bolt; 202, nut; 203, closed pin; 401, bolt; 402, nut; 403, closed pin; 601, bolt; 602, nut; 603, closed pin; 801, bolt; 802, nut; 803, closed Pin; 1101, bracket; 1102, capping ball; 1103, bolt; 1104, nut; 1105, loosening washer; 1106, washer; 1201, hole one; 1202, hole two; 1203, hole three; 1204, hole four; 1401 1402, fastening bolt; 1403, UB hanging plate; 1404, bolt; 1405, nut; 1406, dead pin; 1407, flat washer; 1408, spring washer; 1409, bolt.

detailed description

The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

The compact triple V-shaped hanging string for light ice areas provided by the embodiment of the present invention, as shown in Figures 1 to 26, includes: trunnion hanging plate 1, U-shaped hanging ring-2, DB adjustment plate 3, Z-shaped right-angle hanging Plate one 4, LT type connecting plate 5, parallel hanging plate 6, LZ type connecting plate 7, ZBD type right angle hanging plate 8, U type hanging ring 2 9, composite insulator 10, pressure equalizing ring 11, connecting plate 12, Z Type right-angle hanging plate two 13, suspension line clamp 14, suspension connecting plate 15, weight sheet 16, wire wrapping thing 17, connecting plate two 18, right-angle hanging plate 19. The two triple suspension strings distributed in a "V" shape are respectively connected to the iron tower cross arm and the suspension connecting plate 15. The suspension strings include a composite insulator string composed of composite insulators 10 connected in series, and the composite insulator string of the two triple suspension strings The trunnion hanging plate 1, the U-shaped hanging ring-2, the DB adjusting plate 3, the Z-shaped right-angle hanging plate-4, the LT-type connecting plate 5, the parallel hanging plate 6, and the LZ-type connecting plate are sequentially connected between the cross-arm of the iron tower 7. ZBD-type right-angle hanging plate 8 and U-shaped hanging ring 2 9; one of the composite insulator strings of the triple suspension string and the suspension connecting plate 15 are successively provided with connecting plate 1 12 and Z-shaped right-angle hanging plate 2 13, and the other Between the composite insulator string of the triple suspension string and the suspension joint plate 15, a joint plate two 18 and a right-angle hanging plate 19 are arranged in sequence.

Wherein, as shown in Figures 5 to 6, the trunnion hanging plate 1 is a plate-shaped structure with a hollow circular shaft horizontally provided at one end, and an opening is horizontally provided at the other end, and the direction of the opening is perpendicular to the axial direction of the hollow circular shaft. A stud bolt 101 is arranged in the hollow circular shaft, and a washer 102 is arranged at both ends of the stud bolt 101 and is tightened by a nut 103 .

Among them, as shown in Figures 7 to 8, the opening of the U-shaped hanging ring 2 and the trunnion hanging plate 1 is connected by a bolt 301, and the bolt 301 is fastened by a nut 302, and the end of the bolt 301 is provided with a closed pin to prevent the nut 302 from falling off 303 ; the other end of the U-shaped hanging ring 2 is connected to the DB adjustment plate 3 .

Wherein, as shown in Figure 9, the round hole provided at the intersection of the two straight line edges of the DB adjustment plate 3 is arranged in the U-shaped hanging ring-2, and the round holes arranged at intervals along its arc edge and the Z-shaped right-angle hanging plate-4 connect.

Among them, as shown in Figures 10 to 11, the two ends of the Z-shaped right-angle hanging plate-4 are respectively provided with grooves, and the grooves are perpendicular to each other. One end of the right-angle hanging plate 4 is connected with the round hole arranged on the arc edge of the DB adjustment plate 3 through a bolt 401. After the bolt 401 is tightened with a nut 402, a closed pin 403 is installed to prevent the nut 402 from falling off; Type connecting plate 5 is connected.

Wherein, as shown in Figures 13 to 14, the two ends of the parallel hanging plate 6 are respectively connected with the LT-type connecting plate 5 and the LZ-type connecting plate 7 through bolts.

Wherein, as shown in FIG. 15 , one end of the LZ-type connecting plate 7 is connected to two parallel hanging plates 6 , and the other end is connected to three ZBD-type right-angled hanging plates 8 .

Among them, as shown in Figures 16 to 17, the ZBD-type right-angle hanging plate 8 is a plate structure with a U-shaped groove at one end, and a round hole at the other end; the opening direction of the round hole is consistent with the opening direction of the U-shaped groove. The direction of the groove is consistent, and the two side walls of the U-shaped groove are provided with through holes perpendicular to the direction of the opening of the round hole along the same horizontal line. The U-shaped groove of the ZBD type right-angle hanging plate 8 is connected with the LZ type connecting plate 7 through a bolt 801, and the bolt 801 is fastened with a nut 802, and a closed pin 803 is provided at the end of the bolt 801 to prevent the nut 802 from falling off; ZBD type The circular hole at the other end of the right-angle hanging plate 8 is connected with the U-shaped hanging ring 2 9 by bolts, and the U-shaped hanging ring 2 9 is connected with the suspension string.

Among them, as shown in Figures 18 to 19, the voltage equalizing ring 11 is located between the composite insulators, and is composed of two symmetrically arranged half rings. The end of the half ring is provided with a sealing ball 1102, and the voltage equalizing ring 11 is connected to the bracket 1101 respectively. The first connecting plate 12 and the second connecting plate 18 are connected, and a loosening washer 1105 and a washer 1106 are respectively provided between the bracket 1101 and the first connecting plate 12 and the second connecting plate 18 .

Among them, as shown in Figure 20, one end of connecting plate one 12 is provided with holes one 1201, two holes 1202 and three holes 1203 which are respectively connected in series with composite insulators at equidistant intervals along the same straight line, and the other end is provided with holes three 1203 located at the same distance. The hole four 1204 connected with the Z-type right-angle hanging plate two 13 of the suspension line, the Z-type right-angle hanging plate two 13 is connected with the hanging connecting plate 15 by bolts.

Wherein, as shown in Figures 21 to 22, the suspension clamp 14 includes a pressure plate 1401 located inside it and a UB hanging plate 1403 located on its top; a power transmission wire is placed between the pressure plate 1401 and the suspension clamp 14 and fixed by fastening bolts 1402 After installing flat washer 1407 and spring washer 1408 on the fastening bolt 1402, fasten it with nut 1405; UB hanging plate 1403 is connected with the suspension link plate 15 through bolt 1404, and after the bolt 1404 is fastened with nut 1405, install it to prevent the nut 1405 from falling off Shutter pin 1406.

Wherein, as shown in Figure 23, the suspension connecting plate 15 is provided with the line clamp connecting holes distributed along the same circumference that are connected with the suspension clamps 14 used to suspend the power transmission conductor, and the center of the suspension connecting plate 15 is provided with a hole for controlling the suspension string. The heavy hammer plate 16 of swing angle.

Wherein, as shown in FIG. 24 , the wire wrapping 17 is wrapped on the surface of the power transmission wire to prevent the power transmission wire from being damaged due to excessive external pressure.

Example 1

As shown in Figure 1, there are two triple hanging strings on the left and right distributed in the shape of a "V". It is connected with the hanging connecting plate 15 by connecting plate one 12 and Z-type right-angle hanging plate two 13. The connecting plate 12 adopts the structure shown in Figure 20, and at the upper end of the triple hanging string is changed into two connecting plates through the LZ type connecting plate 7, which optimizes the structure of the hanging string and reduces the weight and length of the hanging string; at the same time, the selected right-angle The strength grade of the hanging board 19 is higher than that of the Z-shaped right-angle hanging board 213. During construction, the left hanging string is placed outside the tower body of the power transmission tower. When the hanging string breaks, because the strength grade of the right-angle hanging plate 19 is higher than that of the Z-shaped right-angle hanging plate 2 13, the right hanging The string is broken first to ensure that the broken string will not cause secondary damage due to hitting the iron tower.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Those of ordinary skill in the art should understand that the specific implementation methods of the present invention can be modified or equivalently replaced with reference to the above embodiments. Any modifications or equivalent replacements that do not deviate from the spirit and scope of the present invention are within the protection scope of the pending claims.

Claims (8)

1. a kind of light ice formation V-type suspension string of compact three, include two three of hanging yoke plate (15) and V-shaped distribution Join suspension string, three suspension string includes the composite insulator string concatenated by composite insulator (10), described compound exhausted Edge substring two ends are connected with steel tower cross-arm and the hanging yoke plate (15) respectively by connector；

It is characterized in that：Gudgeon is sequentially provided with respectively between the composite insulator string and steel tower cross-arm of two three suspension strings Hanging plate (1), U-shaped link one (2), DB adjustment plates (3), Z-type right angle hanging plate one (4), LT types yoke plate (5), parallel hanging plate (6), LZ Type yoke plate (7), ZBD types right angle hanging plate (8) and U-shaped link two (9)；The composite insulator string of three suspension string on the right of wherein Yoke plate one (12) and Z-type right angle hanging plate two (13) are sequentially provided between hanging yoke plate (15), three suspension strings described in the left side Yoke plate two (18) and right angle hanging plate (19), the right angle hanging plate of selection are sequentially provided between composite insulator string and hanging yoke plate (15) （19）Strength grade be higher than Z-type right angle hanging plate two（13）One-level；The trunnion hanging panel (1) is that one end level is provided with Hollow Cylindrical Shaft Platy structure, other end level is provided with perforate, and the perforate direction is vertical with the axis direction of Hollow Cylindrical Shaft, the open circles Stud (101) is set in axle, and stud (101) two ends are sequentially provided with packing ring, nut and closed pin from the inside to the outside； The perforate is connected by bolt with U-shaped link one (2)；The circle that two linear edge intersections of the DB adjustment plates (3) are set Hole is arranged in U-shaped link one (2), and the circular hole being equipped with along its arc-shaped side interval is connected with Z-type right angle hanging plate one (4)；

(4) two ends of Z-type right angle hanging plate one set groove respectively, and the fluting direction of the groove is mutually perpendicular to, the groove Two side is respectively equipped with through hole along same horizontal line direction；The groove is by bolt respectively between DB adjustment plates (3) arc-shaped side Connected every the circular hole and LT types yoke plate (5) of setting；

Parallel hanging plate (6) two ends are connected with LT types yoke plate (5) and LZ types yoke plate (7) respectively by bolt；

The ZBD types right angle hanging plate (8) is the platy structure that one end is provided with U-shaped groove, and other end level is provided with circular hole；The circle The perforate direction in hole is consistent with the fluting direction of U-shaped groove, and the U-shaped groove two side is provided with and institute along same horizontal line direction State the vertical through hole in circular hole perforate direction；LZ types yoke plate (7) is set in the U-shaped groove, the ZBD types right angle hanging plate (8) Circular hole is connected by bolt with U-shaped link two (9)；

The hole one that described (12) one end of yoke plate one is placed equidistant being connected with composite insulator string respectively along same linear interval (1201), hole two (1202) and hole three (1203), the other end are provided with hole two (1202) positioned at same catenary and straight with Z-type The Kong Si (1204) of angle hanging plate two (13) connection.

2. the light ice formation V-type suspension string of compact three as claimed in claim 1, it is characterised in that the composite insulator (10) grading ring (11) is provided between, the grading ring (11) is made up of symmetrically arranged two semi-rings, and the semi-ring end is set End-blocking ball (1102) is put, the grading ring (11) is connected with yoke plate one (12) and yoke plate two (18) respectively by support (1101), It is respectively equipped between the support (1101) and yoke plate one (12) and yoke plate two (18) and loosens packing ring (1105) and packing ring (1106).

3. the light ice formation V-type suspension string of compact three as claimed in claim 1, it is characterised in that Z-type right angle hanging plate Two (13) and right angle hanging plate (19) one end are connected with the yoke plate one (12) and yoke plate two (18) respectively, and the other end is separately positioned on On hanging yoke plate (15).

4. the light ice formation V-type suspension string of compact three as claimed in claim 1, it is characterised in that the hanging yoke plate (15) provided with the wire clamp connecting hole along same circle distribution being connected with suspension clamp (14), hanging yoke plate (15) center is set There is heavy punch piece (16).

5. the light ice formation V-type suspension string of compact three as claimed in claim 1, it is characterised in that suspension clamp (14) is wrapped The UB hanging plates (1403) for including the pressing plate (1401) being provided at its inner portion and being arranged at the top of it；The pressing plate (1401) and catenary Connected between folder (14) by fastening bolt (1402)；The UB hanging plates (1403) are connected by bolt with hanging yoke plate (15).

6. the light ice formation V-type suspension string of compact three as claimed in claim 5, it is characterised in that the pressing plate (1401) Plain washer (1407) and spring washer (1408) are provided between fastening bolt (1402).

7. the light ice formation V-type suspension string of compact three as claimed in claim 6, it is characterised in that transmission pressure is arranged on In the cavity that the pressing plate (1401) and suspension clamp (14) are constituted.

8. the light ice formation V-type suspension string of compact three as claimed in claim 7, it is characterised in that the transmission pressure table Face is provided with wire wrap (17).