Windproof ice-resistant composite insulation cross arm for distribution network

Abstract

The utility model relates to a windproof ice-resistant distribution network composite insulation cross arm, comprising a hinge type fixing fitting, the hinge type fixing fitting is fixed on an electric pole, two opposite sides of the hinge type fixing fitting are detachably and symmetrically provided with insulation cross arms, and one end of each insulation cross arm is provided with a rapid locking wire clamp; the hinge type fixing fitting comprises a hinge type movable flat hoop, a hinge type fixing flat hoop and a bottom plate, when the hinge type fixing fitting is not used, all the movable anti-skid teeth are stored between every two adjacent fixed anti-skid teeth, the overall body shape can be reduced, and the body shape can be reduced for transportation. When the hinge type fixing fitting is used, the movable anti-skid teeth partially move to the outer sides of the two adjacent fixed anti-skid teeth, so that the overall width of the hinge type fixing fitting is increased, and the overall rigidity and torsion resistance of the hinge type fixing fitting are improved.

Description

Technical Field

[0001] This utility model relates to the field of insulating crossarm technology, specifically to a windproof and ice-resistant composite insulating crossarm for power distribution networks. Background Technology

[0002] Insulated crossarms are an important component of power distribution lines, used to support and fix power conductors while also providing insulation to prevent direct contact between the power lines and the supporting structure. Currently, in 10kV distribution lines, straight composite crossarms mainly consist of composite insulators, end fittings, and crossarm clamps, meeting the requirements for use under ordinary meteorological conditions.

[0003] For example, the patent publication number CN221096026U discloses a "straight composite insulated crossarm for power distribution lines," which uses a quick-locking bolt and nut combination to achieve clamping and fixation. The nut can be used with an external power tool for quick installation. In the long-term wind-induced vibration environment of coastal areas, the bolt and nut fixing method is less likely to loosen and detach compared to the pressure ring. The crimping tube has a relief groove for deformation, which helps the crimping tube adapt to various specifications and models of fixing boxes.

[0004] However, existing composite crossarms still have the following problems for typhoon weather in coastal areas and icing conditions in inland areas during winter: First, under strong wind and icing conditions, it is difficult for parameters such as bending load of composite crossarms to meet the requirements, and the strength of clamps and composite crossarms needs to be strengthened; Second, the existing clamp structure needs to be optimized in design, in addition to meeting the bending strength requirements of composite crossarms, the clamps must also have sufficient torsional force relative to the concrete pole. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a windproof and ice-resistant composite insulating crossarm for power distribution networks to solve the aforementioned problems.

[0006] The utility model provides the following technical solutions:

[0007] A windproof and ice-resistant composite insulating crossarm for power distribution networks includes hinged fixing hardware, which is fixed to the pole. The insulating crossarm is detachably and symmetrically installed on both sides of the hinged fixing hardware, and a quick-locking clamp is provided at one end of the insulating crossarm.

[0008] The hinged fixing hardware includes a hinged movable flat clamp, a hinged fixed flat clamp, and a base plate, with a fixed square tube fixedly installed on one side of the base plate;

[0009] The hinged fixed flat clamp is fixed to the other side of the base plate. One end of the hinged movable flat clamp is hinged to the hinged fixed flat clamp, and the other end of the hinged movable flat clamp is connected to the hinged fixed flat clamp through fasteners.

[0010] The hinged movable flat clamp and / or the hinged fixed flat clamp are uniformly provided with fixed anti-slip teeth on their inner sidewalls, and movable anti-slip teeth are movably provided between two adjacent fixed anti-slip teeth.

[0011] Preferably, the insulating crossarm includes a square insulating rod and an insulating jacket disposed on the outer wall of the square insulating rod.

[0012] Preferably, the quick-locking clamp is provided at one end of the square insulating rod, and a crimping square tube is provided at the other end of the square insulating rod. The fixed square tube has symmetrical fixing holes on its left and right sides for the crimping square tube to pass through. The crimping square tube has a positioning hole, and a pin that mates with the positioning hole is inserted into the fixed square tube.

[0013] Preferably, two or more positioning grooves are provided between two adjacent fixed anti-slip teeth, and the sidewall of the movable anti-slip tooth is provided with a positioning protrusion that cooperates with the positioning groove.

[0014] Preferably, two adjacent movable anti-slip teeth are respectively disposed on the upper and lower sides of the hinged movable flat clamp or the hinged fixed flat clamp.

[0015] This utility model has the following beneficial technical effects:

[0016] This utility model adopts a square-shaped insulating crossarm. For the same cross-sectional area, the square crossarm provides greater bending strength than the circular crossarm. The plug-in connection structure of the square-shaped insulating crossarm and the hinged fixing hardware can realize the interchangeability of single and double circuits, which greatly facilitates on-site construction.

[0017] The hinged movable flat clamp and the hinged fixed flat clamp adopt a flat structure, which has a better anti-torsion effect than the circular structure. The anti-slip teeth greatly improve the friction between the clamp and the cement pole.

[0018] When not in use, the hinged fasteners have all the movable anti-slip teeth retracted between the two adjacent fixed anti-slip teeth, which reduces the overall size and facilitates transportation.

[0019] When in use, the movable anti-slip teeth of the hinge-type fastener move to the outside of the two adjacent fixed anti-slip teeth, thereby increasing the overall width of the hinge-type fastener and thus improving its overall rigidity and torsional resistance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the first application scenario of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the second application scenario of this utility model;

[0022] Figure 3 This is a sectional view of the present invention;

[0023] Figure 4 This is a schematic diagram of the hinge-type fixing hardware structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the fixed anti-slip tooth structure of this utility model;

[0025] Figure 6 This is a schematic diagram of the cooperation between the fixed anti-slip teeth and the movable anti-slip teeth of this utility model;

[0026] Figure 7 yes Figure 6 A magnified view of part A;

[0027] The attached figures are labeled as follows:

[0028] 1. Quick-locking clamp; 2. Insulating crossarm; 3. Hinged fixing hardware; 4. Pole; 2-1. Square insulating rod; 2-2. Insulating jacket; 2-3. Crimped square tube; 3-1. Hinged movable flat clamp; 3-11. Fixed anti-slip teeth; 3-12. Movable anti-slip teeth; 3-13. Positioning groove; 3-2. Hinged fixed flat clamp; 3-3. Base plate; 3-4. Fixed square tube; 3-5. Fasteners; 3-6. Pins. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] A windproof and ice-resistant composite insulated crossarm for power distribution networks, such as Figure 1-7 As shown:

[0031] It includes a fixing hardware 3 and an insulating crossarm 2. The fixing hardware 3 is symmetrically installed with the insulating crossarm 2 on both sides. The fixing hardware 3 is horizontally fixed to the pole 4. One end of the insulating crossarm 2 is fixed to the fixing hardware 3, and the other end of the insulating crossarm 2 is equipped with a quick-locking clamp 1.

[0032] like Figure 3As shown, the insulating crossarm 2 is made of resin-based glass fiber reinforced composite material, including a square insulating rod 2-1 and an insulating jacket 2-2 disposed on the outer wall of the square insulating rod 2-1. The insulating jacket 2-2 is equipped with large and small umbrella skirts, providing good insulation even under heavy pollution. One end of the square insulating rod 2-1 is provided with a quick-locking clamp 1, and the other end of the square insulating rod 2-1 is crimped and fixedly installed with a crimped square tube 2-3. The quick-locking clamp 1 is an existing structure and will not be described in detail.

[0033] like Figure 4 As shown, the hinged fixing hardware 3 includes a hinged movable flat clamp 3-1, a hinged fixed flat clamp 3-2, a base plate 3-3, and a fixed square tube 3-4. The hinged fixed flat clamp 3-2 and the fixed square tube 3-4 are respectively fixed on both sides of the base plate 3-3.

[0034] The right end of the hinged movable flat clamp 3-1 is hinged to the right end of the hinged fixed flat clamp 3-2, and the left end of the hinged movable flat clamp 3-1 is connected to the left end of the hinged fixed flat clamp 3-2 through fastener 3-5; the fastener 3-5 consists of bolts and nuts.

[0035] The inner cavity of the fixed square tube 3-4 is adapted to the outer shape of the crimped square tube 2-3. The crimped square tube 2-3 has a positioning hole, and the fixed square tube 3-4 has a pin 3-6 inserted into it. One end of the insulating crossarm 2 is inserted into the fixed square tube 3-4 through the crimped square tube 2-3, and then inserted into the positioning hole through the pin 3-6, thereby achieving horizontal fixation of the insulating crossarm 2 relative to the base plate 3-3.

[0036] like Figure 5-7 As shown, the inner walls of the hinged movable flat clamp 3-1 and the hinged fixed flat clamp 3-2 are evenly provided with fixed anti-slip teeth 3-11. A movable anti-slip tooth 3-12 is linearly connected between two adjacent fixed anti-slip teeth 3-11 along the width direction. Two positioning grooves 3-13 are formed between two adjacent fixed anti-slip teeth 3-11. The side wall of the movable anti-slip tooth 3-12 is provided with a positioning protrusion that mates with the positioning groove 3-13. The positioning protrusion is made of rubber and is elastically deformable.

[0037] Under normal conditions, the positioning protrusion of the movable anti-slip tooth 3-12 is embedded in one of the positioning grooves 3-13. At this time, all the movable anti-slip teeth 3-12 are located between two adjacent fixed anti-slip teeth 3-11, and the overall size is relatively small.

[0038] When fixing the fixing hardware 3 to the pole 4, push the movable anti-slip tooth 3-12 to move along the width direction of the hinged movable flat clamp 3-1 / hinge fixed flat clamp 3-2, so that part of the movable anti-slip tooth 3-12 moves to the outside of the fixed anti-slip tooth 3-11. Figure 6 As shown, the positioning protrusion of the movable anti-slip tooth 3-12 is embedded into another positioning groove 3-13 to achieve relative fixation. And as... Figure 6 The two adjacent sets of movable anti-slip teeth 3-12 move in opposite directions, thereby increasing the width of the upper and lower sides of the hinged movable flat clamp 3-1 / hinge fixed flat clamp 3-2 through the movable anti-slip teeth 3-12.

[0039] The hinged movable flat clamp 3-1 / hinge fixed flat clamp 3-2 has a fixed anti-slip tooth 3-11 in the middle to increase friction, and the upper and lower sides have movable anti-slip teeth 3-12 to not only increase friction, but also increase the overall width to improve the anti-torsion effect.

[0040] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A windproof and ice-resistant composite insulating crossarm for power distribution networks, comprising hinged fixing hardware (3), wherein the hinged fixing hardware (3) is fixed to a pole (4), and insulating crossarms (2) are detachably and symmetrically installed on opposite sides of the hinged fixing hardware (3), wherein a quick-locking clamp (1) is provided at one end of the insulating crossarm (2), characterized in that: The hinged fixing hardware (3) includes a hinged movable flat clamp (3-1), a hinged fixed flat clamp (3-2) and a base plate (3-3), and a fixed square tube (3-4) is fixedly installed on one side of the base plate (3-3); The hinged fixed flat clamp (3-2) is fixed on the other side of the base plate (3-3). One end of the hinged movable flat clamp (3-1) is hinged to the hinged fixed flat clamp (3-2), and the other end of the hinged movable flat clamp (3-1) is connected to the hinged fixed flat clamp (3-2) by fasteners. The hinged movable flat clamp (3-1) and / or the hinged fixed flat clamp (3-2) are uniformly provided with fixed anti-slip teeth (3-11) on their inner sidewalls, and movable anti-slip teeth (3-12) are movably provided between two adjacent fixed anti-slip teeth (3-11).

2. The windproof and ice-resistant composite insulating crossarm for power distribution networks according to claim 1, characterized in that, The insulating crossarm (2) includes a square insulating rod (2-1) and an insulating jacket (2-2) disposed on the outer wall of the square insulating rod (2-1).

3. The windproof and ice-resistant composite insulating crossarm for power distribution networks according to claim 2, characterized in that, The quick-locking clamp (1) is set at one end of the square insulating rod (2-1), and the other end of the square insulating rod (2-1) is provided with a crimping square tube (2-3). The fixed square tube (3-4) has symmetrical fixed holes on its left and right sides for the crimping square tube (2-3) to pass through. The crimping square tube (2-3) is provided with a positioning hole, and the fixed square tube (3-4) is provided with a pin (3-6) that cooperates with the positioning hole.

4. The windproof and ice-resistant composite insulating crossarm for power distribution networks according to claim 1, characterized in that, Two or more positioning grooves (3-13) are provided between two adjacent fixed anti-slip teeth (3-11), and the side wall of the movable anti-slip tooth (3-12) is provided with a positioning protrusion that cooperates with the positioning groove (3-13).

5. The windproof and ice-resistant composite insulating crossarm for power distribution networks according to claim 4, characterized in that, The two adjacent movable anti-slip teeth (3-12) are respectively set on the upper and lower sides of the hinged movable flat clamp (3-1) or the hinged fixed flat clamp (3-2).

Images