Hanging fittings and integrated fully insulated distribution network conductor support device using the same

Abstract

The present invention discloses a wire hanging fitting and an integrated fully insulated distribution network conductor support device using the same, wherein the wire hanging fitting includes a main body locking device and a wire fixing clamp mounted on the main body locking device; the main body locking device includes a first locking seat and a second locking seat that are hingedly connected, the first locking seat and the second locking seat are fixed by a connector after being aligned, and a slot for clamping the end of the insulator is formed at the joint surface; the wire fixing clamp is a clamping structure, with at least one mounted on each of the first locking seat and the second locking seat. The support device includes an electric pole, a first insulating crossarm and a second insulating crossarm mounted on the top of the electric pole, and a wire hanging fitting mounted on the first insulating crossarm and the second insulating crossarm. Compared with traditional binding-type wire hanging fittings, the wire hanging fitting disclosed by the present invention is less difficult to install, and is less likely to have problems such as poor contact and mechanical failure, and is suitable for use in emergency repair scenarios.

Description

Technical Field

[0001] The present invention relates to a device for overhead lines or cables, in particular to a wire hanging fitting and an integrated fully insulated distribution network conductor support and fixing device using the same. Background Art

[0002] Wire hanging fittings are an essential component for securing conductors in distribution lines. Currently, wire hanging fittings are primarily of the lashing type. These types feature a vertically upward-curving, solid tail, resulting in a relatively heavy overall weight. The tail is thicker at the top and thinner at the bottom, with an annular groove formed at the lower end. Pre-twisted wire is wrapped around the groove and tail using a three-step lashing technique to bind the conductors. This structure often presents the following issues during actual installation:

[0003] One is that it is heavy, making it difficult to carry during high-altitude operations, which increases the burden on workers;

[0004] The second is the high difficulty of binding. The cable tie needs to be wrapped around 6 to 8 turns and the force needs to be applied evenly. Substandard workmanship can easily lead to: (1) poor contact, where uneven local pressure increases the contact resistance between the wire and the hardware, causing overheating; (2) mechanical failure, where the pre-twisted wire becomes loose, causing the wire to slip beyond the safe range, resulting in abnormal sag or wire breakage.

[0005] Furthermore, in the traditional distribution line installation system, in addition to the wire hanging hardware, poles and pole accessories such as crossarms, insulators, clamps, and fasteners are also involved. During the pole erection construction process, the above materials need to be collected one by one. After arriving at the construction site, the crossarms must first be assembled on the poles, and then the pole erection operation will be carried out. After the pole erection is completed, climbing operations are required to install the remaining accessories. This entire set of operations is complex and requires the collaboration of many people and multiple operations to complete. Especially in special periods such as emergency repairs, the disadvantages of this cumbersome and fragmented operation mode are fully exposed: the material collection links are scattered, which increases time costs and management difficulties; the multi-step on-site assembly and multiple pole climbing operations not only consume a lot of manpower and material resources, but also significantly reduce the efficiency of emergency repairs, making it difficult to meet the urgent need for rapid restoration of power supply in special periods. Summary of the Invention

[0006] The present invention provides a wire hanging hardware, which aims to solve the problems of on-site installation and construction troubles and inconsistent work standards of workers caused by traditional wire hanging hardware;

[0007] The present invention also provides an integrated fully insulated distribution network conductor support device, which aims to simplify the construction site operation process and improve construction efficiency.

[0008] To achieve the above-mentioned object, the technical solution adopted by the present invention is as follows: a wire hanging hardware, comprising a main body locking device and a wire fixing clamp assembled on the main body locking device;

[0009] The main body locking device includes a first locking seat and a second locking seat that are hingedly connected. The first locking seat and the second locking seat are fixed by a connecting piece after being aligned, and a slot for holding the end of the insulator is formed on the joint surface;

[0010] The wire fixing fixture is a clamping structure, and at least one wire fixing fixture is assembled on each of the first locking seat and the second locking seat.

[0011] As a limitation of the present invention, both the first locking seat and the second locking seat are provided with an inverted trapezoidal groove, and the bottom of the inverted trapezoidal groove is provided with a through hole penetrating the first locking seat or the second locking seat.

[0012] As a further limitation of the present invention, the wire fixing fixture includes a first fixed catch and a second fixed catch hingedly connected via a second hinge shaft, a first hinge bolt assembled on the second hinge shaft, and a first locking nut used in conjunction with the first hinge bolt;

[0013] The first fixing catch and the second fixing catch are assembled in the inverted trapezoidal groove; the first articulated bolt is passed through the through hole; and the first locking nut is threadedly assembled on the first articulated bolt and rests under the through hole.

[0014] As a further limitation of the present invention, a first spring is sleeved on the first movable bolt, and the first spring is confined between the bottom of the inverted trapezoidal groove and the bottom of the fixed catch.

[0015] As a further limitation of the present invention, an opening and closing spring is sleeved on the second hinge shaft, and the opening and closing spring is a torsion spring.

[0016] As a further limitation of the present invention, the first fixed gripping bracket and the second fixed gripping bracket are both made of carbon nanomaterials; and the clamping surfaces of the first fixed gripping bracket and the second fixed gripping bracket are both provided with heat dissipation anti-slip grooves.

[0017] As another limitation of the present invention, the connecting member includes a second movable bolt and a second locking nut used in conjunction with each other;

[0018] A hinge block is fixedly provided on the first locking seat, and a limit block is fixedly provided on the second locking seat. When the first locking seat and the second locking seat are aligned, the hinge block corresponds to the limit block.

[0019] The second articulated bolt is hinged on the articulated block; the second locking nut is threadedly assembled on the second articulated bolt, and when the second locking nut is restricted on the limiting block, the first locking seat is fixed to the second locking seat.

[0020] The present invention also discloses an integrated fully insulated distribution network conductor support device, comprising a pole, a first insulating crossarm and a second insulating crossarm mounted on the top of the pole; and also comprising a wire hanging fitting mounted on the first insulating crossarm and the second insulating crossarm, wherein the wire hanging fitting is the wire hanging fitting described above.

[0021] As a limitation of the present invention, the first insulating cross-arm is assembled on the top of the pole through a first connecting seat; the first connecting seat includes an end cap for covering the top of the pole, at least one first screw passing through the pole and the end cap, and a first nut threadedly assembled on the first screw;

[0022] The end of the first insulating cross arm is assembled on the first screw rod. When the first nut is tightened, the first screw rod is stretched to generate an axial pre-tightening force to press the first insulating cross arm against the side surface of the end cover.

[0023] As another limitation of the present invention, the second insulating cross-arm is assembled on the top of the pole through a second connecting seat and is located below the first insulating cross-arm;

[0024] The second connecting seat includes a left half and a right half. When the left half and the right half are aligned, a clamping groove for clamping the pole is formed at the joint surface. When the left half and the right half are aligned, they are connected by at least two sets of bolts, and a pre-tightening force is applied to ensure that the joint surface is compressed.

[0025] The end of the second insulating cross arm is assembled on the bolt group, and positioning blocks for positioning the second insulating cross arm in a horizontal or vertical state are fixed on both the left half and the right half.

[0026] Due to the adoption of the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0027] (1) The present invention provides a wire hanging hardware for power conductors that does not require binding. The main body locking device includes a first locking seat and a second locking seat that are hingedly connected. The first locking seat can be easily opened and closed to hold the end of the insulator, thereby achieving installation on the end of the insulator. The wire fixing clamp locks the wire by moving up and down. When lifting upward, the first fixed grip and the second fixed grip will automatically open to both sides. After the wire is placed, tightening the first locking nut can pull the first fixed grip and the second fixed grip down into the inverted trapezoidal groove through the first movable bolt, so that they close and lock the wire. Compared with traditional binding-type wire hanging hardware, the wire hanging hardware disclosed by the present invention is easy to install and is not prone to problems such as poor contact and mechanical failure. It is suitable for use in emergency repair scenarios.

[0028] (2) In the wire hanging hardware disclosed in the present invention, a first spring is sleeved on the first movable bolt, and an opening and closing spring is sleeved on the second hinge shaft. When the first locking nut is loosened, the first spring can push the first fixed catch and the second fixed catch upward out of the inverted trapezoidal groove, and the opening and closing spring can spread the first fixed catch and the second fixed catch apart, making it more convenient to use.

[0029] (3) In the wire hanging hardware disclosed in the present invention, the first and second fixed grips are made of carbon nanomaterials. When alternating current passes through ferromagnetic materials, hysteresis loss and eddy current loss are generated, causing the object to heat up. Carbon nanomaterials are almost non-magnetic and can significantly reduce the power loss caused by the wire hanging hardware.

[0030] (4) The present invention also provides an integrated fully insulated distribution network conductor support device, which innovatively adopts an integrated molding design. Accessories such as insulating crossarms and wire hanging hardware are directly integrated on the poles. After the overall manufacturing is completed in the factory, it is directly transported to the construction site, which greatly simplifies the construction site operation process. Only the key step of pole installation is required to complete the pole erection work, effectively avoiding many complex processes in the traditional operation mode, greatly saving manpower, material resources and precious time costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0032] Figure 1 This is a schematic structural diagram of a wire hanging fitting in an embodiment of the present invention;

[0033] Figure 2 This is a schematic diagram of the disassembled structure of the wire hanging fitting in an embodiment of the present invention;

[0034] Figure 3 This is a schematic structural diagram of a main body locking device in a wire hanging fitting according to an embodiment of the present invention;

[0035] Figure 4This is a schematic structural diagram of a wire fixing fixture in a wire hanging fitting according to an embodiment of the present invention;

[0036] Figure 5 Schematic diagram of the expanded structure of the integrated fully insulated distribution network conductor support device according to an embodiment of the present invention (single circuit);

[0037] Figure 6 Schematic diagram of the retracted structure of the integrated fully insulated distribution network conductor support device according to an embodiment of the present invention (single circuit);

[0038] Figure 7 Schematic diagram of the expanded structure of the integrated fully insulated distribution network conductor support device (double circuit) in an embodiment of the present invention;

[0039] Figure 8 Schematic diagram of the retracted structure of the integrated fully insulated distribution network conductor support device (double circuit) in an embodiment of the present invention;

[0040] Figure 9 Schematic diagram of the assembly structure of the first connecting base, the first insulating cross arm and the wire hanging fitting in an embodiment of the present invention;

[0041] Figure 10 Schematic diagram of the disassembled structure of the first connecting socket in an embodiment of the present invention;

[0042] Figure 11 Schematic diagram of the assembly structure of the second connecting base, the second insulating cross arm and the wire hanging fitting in an embodiment of the present invention;

[0043] Figure 12 This is a schematic structural diagram of the second connecting socket in an embodiment of the present invention;

[0044] Figure 13 Schematic diagram of the split structure of the second connecting socket in an embodiment of the present invention;

[0045] Figure 14 Schematic diagram of the structure of the first insulating cross arm and the wire hanging fittings in an embodiment of the present invention;

[0046] Figure 15 Schematic diagram of the structure of the second insulating cross arm and the wire hanging fittings in an embodiment of the present invention;

[0047] Figure 16 Schematic diagram of the transport packaging of the integrated fully insulated distribution network conductor support device according to an embodiment of the present invention;

[0048] In the figure: 1, electric pole; 2, first insulating cross arm; 3, second insulating cross arm; 4, wire hanging hardware; 5, main body locking device; 6, wire fixing clamp; 7, first locking seat; 8, second locking seat; 9, card slot; 10, first hinge axis; 11, inverted trapezoidal groove; 12, through hole; 13, hinge block; 14, limit block; 15, second joint bolt; 16, second locking nut; 17, first fixed catch; 18, second fixed catch; 19, first Visible bolt; 20. First locking nut; 21. First spring; 22. Opening and closing spring; 23. Heat dissipation and anti-slip groove; 24. Second hinge shaft; 25. First connecting seat; 26. Second connecting seat; 27. End cover; 28. First screw; 29. ​​First nut; 30. Left half; 31. Right half; 32. Clamping groove; 33. Second screw; 34. Second nut; 35. Positioning block; 36. Insulating sheath; 37. Wooden box; 38. Annular groove. DETAILED DESCRIPTION

[0049] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and understand the present invention and are not intended to limit the present invention.

[0050] This embodiment discloses a wire hanging hardware 4, such as Figures 1 to 2 As shown, it includes a main body locking device 5 and a wire fixing clamp 6.

[0051] The main body locking device 5 includes a first locking seat 7 and a second locking seat 8. Figure 3 As shown, the first locking seat 7 and the second locking seat 8 are hingedly connected on one side by a first hinge shaft 10, and fixed on the opposite side by a connecting piece. After the first locking seat 7 and the second locking seat 8 are aligned, a card groove 9 for holding the end of the insulator is formed at the joint surface to achieve assembly and fixation on the end of the insulator (the insulator refers to the insulating cross arm described below). Furthermore, both the first locking seat 7 and the second locking seat 8 are provided with an inverted trapezoidal groove 11, and the bottom of the inverted trapezoidal groove 11 is provided with a through hole 12 that passes through the locking seat. A hinge block 13 is fixed on the first locking seat 7, and a limit block 14 is fixed on the second locking seat 8, as shown Figure 3 As shown, when the first locking seat 7 and the second locking seat 8 are aligned, the hinge block 13 corresponds to the limit block 14. Among them, the limit block 14 is provided with a limit groove on the side away from the hinge block 13 for limiting the second locking nut 16 described below.

[0052] More specifically, the connecting member includes a second movable bolt 15 and a second locking nut 16 used in conjunction with each other. Figure 3As shown, the second pivot bolt 15 is hingedly connected to the hinge block 13, and the second lock nut 16 is threadedly assembled on the second pivot bolt 15. After the first locking seat 7 and the second locking seat 8 are aligned, the second pivot bolt 15 and the second lock nut 16 are rotated onto the limit block 14, and the second lock nut 16 is tightened so that it enters the limit groove of the limit block 14, thereby fixing the first locking seat 7 and the second locking seat 8 relative to each other in the aligned state.

[0053] In this embodiment, the main locking device 5 is made of aluminum alloy A380. Compared with traditional cast iron, it has advantages such as lightness, shock resistance, electrical interference resistance, and high thermal conductivity. It is at least half the weight and has a breaking load increased by at least 30%, which can effectively improve the safety and reliability of the line.

[0054] The wire fixing clamp 6 is a clamping structure, and one is mounted on each of the first locking seat 7 and the second locking seat 8. Of course, according to actual needs, multiple wire fixing clamps 6 can be mounted on the first locking seat 7 and the second locking seat 8, and multiple inverted trapezoidal grooves 11 are required. Figure 4 As shown, the wire fixing fixture 6 includes a first fixing catch 17 and a second fixing catch 18 hingedly connected by a second hinge shaft 24, a first hinge bolt 19 assembled on the second hinge shaft 24, and a first locking nut 20 used in conjunction with the first hinge bolt 19. Figure 1 and Figure 2 As shown, the first fixed catch 17 and the second fixed catch 18 are assembled in the same inverted trapezoidal groove 11; the first articulated bolt 19 is inserted into the through hole 12 at the bottom of the inverted trapezoidal groove 11; and the first locking nut 20 is threadedly assembled on the first articulated bolt 19 and abuts below the through hole 12. The first articulated bolt and the first locking nut 20 cooperate to restrain the first and second fixed catches 17 and 18 in the inverted trapezoidal groove 11, so that the first and second fixed catches 17 and 18 are in a closed state.

[0055] like Figure 4 As shown, a first spring 21 is mounted on the first pivot bolt 19. When the first pivot bolt 19 is inserted into the through hole 12, the first spring 21 is trapped between the bottom of the inverted trapezoidal slot 11 and the bottom of the fixed catch. When the first locking nut 20 is loosened, the first spring 21 pushes the fixed catch upward out of the inverted trapezoidal slot 11. A torsion spring 22 is mounted on the second hinge shaft 24. When the fixed catch is pushed out of the inverted trapezoidal slot 11 and is no longer restricted by it, the first and second fixed catches 17 and 18 automatically open to the sides under the action of the opening and closing spring 22.

[0056] In this embodiment, the first fixed gripping bracket 17 and the second fixed gripping bracket 18 are both made of carbon nanomaterials, and the clamping surfaces of the first fixed gripping bracket 17 and the second fixed gripping bracket 18 are both provided with heat dissipation anti-slip grooves 23 .

[0057] This embodiment also discloses an integrated, fully insulated distribution network conductor support device, specifically designed for special needs during emergencies and repairs. It is a lightweight product with efficient repair capabilities. Its integrated design eliminates the complex steps of traditional distribution line installation, such as separate material collection and multiple pole-mounting operations. This significantly shortens construction time and significantly improves the overall efficiency of emergency repair work.

[0058] Specifically, such as Figures 5 to 8 As shown, the integrated fully insulated power distribution network conductor support device includes a pole 1, an insulating cross arm mounted on the top of the pole 1, and a wire hanging hardware 4 mounted on the end of the insulating cross arm. The wire hanging hardware 4 adopts the structure described above.

[0059] The pole 1 is a tapered pole with a thick bottom and a thin top, and is made of composite insulating material through an integrated molding process. The insulating cross arm is assembled on the top of the pole 1, including the first insulating cross arm 2 and the second insulating cross arm 3. Figure 14 As shown, the tail of the first insulating cross arm 2 extends along the length direction of the first insulating cross arm 2, and the tail is provided with an annular groove 38 for assembling the hanging wire fitting 4; Figure 15 As shown, the tail of the second insulating cross arm 3 is vertically tilted upward, perpendicular to the length direction of the second insulating cross arm 3, and the tail is also provided with an annular groove 38 for assembling the hanging wire fitting 4. Further, the first insulating cross arm 2 is assembled on the top of the pole 1 through the first connecting seat 25, as shown in FIG. Figure 9 and Figure 10 As shown, the first connection base 25 includes an end cap 27, a first screw 28, and a first nut 29. The end cap 27 is buckled onto the top of the pole 1; the first screw 28 is inserted through the pole 1 and the end cap 27. Generally, the first screw 28 includes at least two parallel screws. The first nut 29 is threadedly assembled on the first screw 28 to prevent the first screw 28 from detaching from the end cap 27 or the pole 1.

[0060] The end of the first insulating cross arm 2 is sleeved on the first screw 28. When the first nut 29 is tightened, the first screw 28 is stretched to generate an axial pre-tightening force that can press the first insulating cross arm 2 against the side of the end cover 27, thereby fixing it to the top of the pole 1.

[0061] The second insulating cross arm 3 is assembled on the top of the pole 1 through the second connecting seat 26 and is located below the first insulating cross arm 2. Figures 11 to 13As shown, the second connecting base 26 comprises a left half 30 and a right half 31. When the left and right halves 30 and 31 are aligned, a gripping groove 32 is formed at the joint surface for gripping the pole 1, thereby achieving assembly and fixation on the pole 1. Furthermore, after the left and right halves 30 and 31 are aligned, they are connected by at least two bolt assemblies. In this embodiment, two bolt assemblies are used, each of which includes a second screw 33 and a second nut 34. Tightening the second nut 34 applies a preload force to the left and right halves 30 and 31, ensuring a tight fit at the joint surface.

[0062] In this embodiment, the first screw 28 , the first nut 29 , the second screw 33 and the second nut 34 are all covered with an insulating sheath 36 .

[0063] The end of the second insulating cross arm 3 is sleeved on the bolt group. Figure 13 As shown, in this embodiment, positioning blocks 35 are fixedly mounted on both the left and right halves 30, 31. These blocks 35 are secured to the sides of the left and right halves 30, 31 by the preload force applied by the bolt assembly. The positioning blocks 35 utilize the groove positioning principle known in the prior art to position the second insulating crossarm 3 in either a horizontal or vertical position. (When the horizontal position is defined, this is achieved by utilizing the horizontal groove formed by the positioning blocks 35 and the left or right halves 30, 31; when the vertical position is defined, this is achieved by utilizing the existing grooves on the left or right halves 30, 31, in conjunction with the positioning blocks 35, for lateral support.)

[0064] According to the line requirements, the integrated fully insulated distribution network conductor support device disclosed in this embodiment can be a single-insulated cross-arm structure or a double-insulated cross-arm structure. Figure 5 、 Figure 6 As shown, it is a single-insulated cross-arm structure, suitable for single-circuit line installation; Figure 7 、 Figure 8 As shown, it is a double-insulated cross-arm structure, suitable for dual-circuit line installation.

[0065] During transportation, loosen the first nut 29, rotate the first insulating cross arm 2 to the top facing downward, fold it to one side of the pole 1, and then tighten the first nut 29; loosen the second nut 34, rotate the second insulating cross arm 3 to the top facing upward, and also fold it to one side of the pole 1, and then tighten the second nut 34; finally, the structure is formed as shown in the figure. Figure 6 or Figure 8 The state shown in the figure can be packaged in wooden box 37. Figure 16 As shown, cross arm collision can be avoided during transportation.

[0066] During installation, the first insulating cross arm 2 and the second insulating cross arm 3 are unfolded to form Figure 5 or Figure 7 The construction and installation can be carried out when the status shown is reached.

[0067] It should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art may still modify the technical solutions described in the above embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A wire hanging fitting, characterized by: It includes a main body locking device and a wire fixing fixture assembled on the main body locking device; The main body locking device includes a first locking seat and a second locking seat that are hingedly connected. The first locking seat and the second locking seat are fixed by a connecting piece after being aligned, and a slot for holding the end of the insulator is formed on the joint surface; The wire fixing fixture is a clamping structure, and at least one wire fixing fixture is assembled on each of the first locking seat and the second locking seat; The first locking seat and the second locking seat are both provided with an inverted trapezoidal groove, and the bottom of the inverted trapezoidal groove is provided with a through hole penetrating the first locking seat or the second locking seat; The wire fixing fixture includes a first fixed catch and a second fixed catch hingedly connected via a second hinge shaft, a first hinge bolt assembled on the second hinge shaft, and a first locking nut used in conjunction with the first hinge bolt; The first fixed gripping bracket and the second fixed gripping bracket are assembled in the inverted trapezoidal groove; The first movable bolt is inserted into the through hole; the first locking nut is threadedly assembled on the first movable bolt and abuts against the bottom of the through hole; A first spring is sleeved on the first movable bolt, and the first spring is confined between the bottom of the inverted trapezoidal groove and the bottom of the fixed catch; An opening and closing spring is sleeved on the second hinge shaft, and the opening and closing spring is a torsion spring.

2. The wire hanging fitting according to claim 1, characterized in that: The first fixed gripping support and the second fixed gripping support are both made of carbon nanomaterials; and heat dissipation and anti-slip grooves are provided on the clamping surfaces of the first fixed gripping support and the second fixed gripping support.

3. The wire hanging fitting according to claim 1 or 2, characterized in that: The connecting piece includes a second movable bolt and a second locking nut used in conjunction with each other; A hinge block is fixedly provided on the first locking seat, and a limit block is fixedly provided on the second locking seat. When the first locking seat and the second locking seat are aligned, the hinge block corresponds to the limit block. The second articulated bolt is hinged on the articulated block; the second locking nut is threadedly assembled on the second articulated bolt, and when the second locking nut is restricted on the limiting block, the first locking seat is fixed to the second locking seat.

4. An integrated fully insulated distribution network conductor support device, comprising a pole, a first insulating cross arm and a second insulating cross arm mounted on the top of the pole; characterized in that: It also includes a hanging wire fitting assembled on the first insulating cross arm and the second insulating cross arm, and the hanging wire fitting is the hanging wire fitting according to any one of claims 1 to 3.

5. The integrated fully insulated distribution network conductor support device according to claim 4, characterized in that: The first insulating cross arm is assembled on the top of the pole through a first connecting seat; the first connecting seat includes an end cap for covering the top of the pole, at least one first screw rod passing through the pole and the end cap, and a first nut threadedly assembled on the first screw rod; The end of the first insulating cross arm is assembled on the first screw rod. When the first nut is tightened, the first screw rod is stretched to generate an axial pre-tightening force to press the first insulating cross arm against the side surface of the end cover.

6. The integrated fully insulated distribution network conductor support device according to claim 4 or 5, characterized in that: The second insulating cross arm is assembled on the top of the pole through a second connecting seat and is located below the first insulating cross arm; The second connecting seat includes a left half and a right half. When the left half and the right half are aligned, a clamping groove for clamping the pole is formed at the joint surface. When the left half and the right half are aligned, they are connected by at least two sets of bolts, and a pre-tightening force is applied to ensure that the joint surface is compressed. The end of the second insulating cross arm is assembled on the bolt group, and positioning blocks for positioning the second insulating cross arm in a horizontal or vertical state are fixed on both the left half and the right half.

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