Power transmission line iron tower insulation cross arm

Abstract

The utility model relates to a power transmission line iron tower insulation cross arm which comprises an auxiliary fixing assembly, a hoop assembly, two double-thread screws, two brackets and a plurality of insulators installed on the two brackets, and the auxiliary fixing assembly and the hoop assembly are both arranged on the outer side of a telegraph pole in a sleeving mode and fixed to the telegraph pole in a clamping mode. The two double-thread screws are inserted into the two opposite sides of the top of the auxiliary fixing assembly correspondingly, the ends of the double-thread screws penetrate through the adjacent brackets, and the ends of the double-thread screws are sleeved with two nuts which are in threaded connection with the double-thread screws and used for fixing the adjacent brackets. The auxiliary fixing assembly and the hoop assembly are fixed at different positions of a telegraph pole in a matched manner and can assist each other to keep fixation, so that the overall structural stability of the insulating cross arm is enhanced, uniform stress is ensured, the service life of the insulating cross arm is effectively prolonged, and when an insulator needs to be replaced or maintained, the insulation cross arm is prevented from being damaged. The bracket can be easily disassembled only by loosening the nuts on the double-thread screws, and the whole insulating cross arm does not need to be disassembled on a large scale.

Description

Technical Field

[0001] This utility model relates to the field of insulating crossarm technology, specifically to an insulating crossarm for transmission line towers. Background Technology

[0002] Insulating crossarms are key components in transmission line towers used to support and fix insulators. Their core functions include: isolating high-voltage power lines from the tower body through insulating materials or structures, preventing current from flowing through the tower to ground, and ensuring safe power transmission; bearing the weight of the power lines, wind loads, icing, and other mechanical loads, and maintaining conductor spacing and sag stability. Traditional transmission line tower insulating crossarms consist of angle irons horizontally fixed at the top of the pole and insulators installed on the angle irons. Commonly, two symmetrical angle irons are connected and clamped to the pole using bolts.

[0003] However, this design has certain drawbacks: when the surface of the utility pole (or tower column) is irregular, with local protrusions or depressions, the angle iron in the traditional insulating crossarm is difficult to achieve a tight fit and stable installation, which can easily lead to problems such as insecure installation and uneven stress, thereby affecting the overall structural stability of the insulating crossarm. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] This utility model provides an insulating crossarm for transmission line towers, which solves the problem that existing insulating crossarms are prone to insecure installation and uneven stress when used on irregular surfaces of utility poles or tower columns with local protrusions or depressions, thus affecting the overall structural stability of the insulating crossarm.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: an insulating crossarm for a transmission line tower, comprising an auxiliary fixing component, a clamping component, two double-ended screws, two brackets, and several insulators mounted on the two brackets. The auxiliary fixing component and the clamping component are both sleeved on the outside of the pole and clamped and fixed thereto. The two double-ended screws are respectively inserted into the opposite sides of the top of the auxiliary fixing component, and the ends of the double-ended screws pass through the adjacent brackets. The ends of the double-ended screws are fitted with two nuts that are threaded to them and used to fix the adjacent brackets.

[0008] Preferably, the auxiliary fixing assembly includes two base supports and two positioning brackets. The two base supports are symmetrically arranged on opposite sides of the utility pole, and each end of the base support has a clamping part that contacts the outer wall of the utility pole. Each opposite side of the two base supports has a connecting seat, which is fixedly connected to the bottom end of the positioning bracket. The middle section of the positioning bracket is connected to a clamping assembly. The top end of the clamping assembly is passed through and welded to it. The clamping parts formed at both ends of the base support are symmetrically inclined inward at a certain angle, and the inner sidewall of the clamping part has anti-slip texture or is bonded with an anti-slip pad.

[0009] In a further preferred embodiment, the clamp assembly includes an even number of arc-shaped seats, the inner wall of each arc-shaped seat being in contact with the utility pole. The end of the arc-shaped seat near the positioning bracket forms a positioning bracket connecting part that fits and contacts the positioning bracket, and the end of the arc-shaped seat away from the positioning bracket forms an arc-shaped seat connecting part. The arc-shaped seat connecting parts are connected and fixed to adjacent positioning brackets by fasteners, and every two adjacent arc-shaped seat connecting parts are connected and fixed by fasteners. The inner wall of each arc-shaped seat also has anti-slip textures or is adhered with an anti-slip pad.

[0010] In a further preferred embodiment, the middle section of the positioning bracket has a circular hole, and the connecting part of the positioning bracket has a connecting hole facing the circular hole of the positioning bracket, wherein the connecting hole is configured as an oblong hole or an elliptical hole.

[0011] (III) Beneficial Effects

[0012] Compared with the prior art, this utility model provides an insulating crossarm for transmission line towers, which has the following beneficial effects:

[0013] In this invention, the auxiliary fixing component and the clamp component are fixed together at different positions on the utility pole, and the two can help each other to maintain the fixation, thereby enhancing the overall structural stability of the insulating crossarm, ensuring uniform stress distribution, and effectively extending the service life of the insulating crossarm. In addition, when it is necessary to replace or repair the insulator, the bracket can be easily removed simply by loosening the nut on the double-ended screw, without the need for large-scale disassembly of the entire insulating crossarm, thereby reducing maintenance costs and time costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the insulated crossarm structure of a transmission line tower according to the implementation plan;

[0015] Figure 2 for Figure 1 A schematic diagram of the structure of the insulating crossarm of the transmission line tower after it is installed on the pole.

[0016] Figure 3This is a schematic diagram of the mating structure of the clamp assembly and auxiliary fixing assembly according to the implementation plan.

[0017] In the diagram: 10, utility pole; 20, auxiliary fixing component; 21, base support; 211, clamping part; 212, connecting seat; 22, positioning bracket; 30, clamping assembly; 31, arc-shaped seat; 32, arc-shaped seat connecting part; 33, positioning bracket connecting part; 331, connecting hole; 40, double-ended screw; 50, bracket; 60, insulator. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1 and Figure 2 An insulating crossarm for a transmission line tower includes an auxiliary fixing assembly 20, a clamp assembly 30, two double-ended screws 40, two brackets 50, and several insulators 60 mounted on the two brackets 50. The auxiliary fixing assembly 20 and the clamp assembly 30 are both sleeved on the outside of the pole 10 and clamped thereto for fixation. The auxiliary fixing assembly 20 and the clamp assembly 30 cooperate to connect and fix the entire device to the pole 10. The two double-ended screws 40 are respectively inserted into opposite sides of the top of the auxiliary fixing assembly 20 and fixedly connected thereto. The ends of the double-ended screws 40 pass through the adjacent brackets 50, and the ends of the double-ended screws 40 are fitted with two nuts that are threaded to them and used to fix the adjacent brackets 50. During replacement and maintenance, the brackets 50 and the insulators 60 supported on them can be easily removed simply by loosening the nuts on the double-ended screws, without the need for large-scale disassembly of the entire insulating crossarm, thus reducing maintenance costs and time.

[0020] See Figure 2 and Figure 3The auxiliary fixing assembly 20 includes two base supports 21 and two positioning brackets 22. The two base supports 21 are symmetrically arranged on opposite sides of the utility pole 10, and each base support 21 has a clamping portion 211 at both ends. The clamping portions 211 at both ends of the base supports 21 are symmetrically inclined inward at a certain angle, and the inner wall of the clamping portion 211 has anti-slip textures or is bonded with anti-slip pads. The clamping portions 211 at both ends of the base supports 21 can be adjusted to contact the outer wall of the utility pole 10, and the auxiliary fixing assembly 20 is fixed by the frictional resistance between the clamping portions 211 on the two base supports 21 and the utility pole 10 after clamping. Each of the opposite sides of the two base supports 21 has a connecting seat 212, which can be fixed to the bottom end of the positioning bracket 22 using a combination of bolts and nuts, or fasteners such as rivets. The middle section of the positioning bracket 22 is used to connect with the clamp assembly 30, and the top of the clamp assembly 30 is passed through and welded to the adjacent double-ended screw 40.

[0021] See Figure 2 and Figure 3 The clamp assembly 30 includes an even number of arc-shaped seats 31. The inner wall of each arc-shaped seat 31 is in contact with the utility pole 10, and each arc-shaped seat 31 has anti-slip textures or an adhesive anti-slip pad on its inner wall. The clamp assembly 30 is fixed by the frictional resistance between the even number of arc-shaped seats 31 and the utility pole 10 after clamping. The end of the arc-shaped seat 31 near the positioning bracket 22 has a positioning bracket connecting part 33 that fits into contact with the positioning bracket 22. The middle section of the positioning bracket 22 has a circular hole, and the positioning bracket connecting part 33 has a connecting hole 331 facing the circular hole of the positioning bracket 22. The connecting hole 331 is set as an elongated hole or an elliptical hole so that when the positioning bracket 22 and the positioning bracket connecting part 33 are connected by fasteners such as bolts, the position of the positioning bracket 22 can be adjusted, thereby allowing the two base supports 21 in the auxiliary fixing assembly 20 to be moved and adjusted to clamp the utility pole 10. An arc-shaped seat 31 is formed at the end away from the positioning bracket 22 with an arc-shaped seat connecting part 32. Each pair of adjacent arc-shaped seat connecting parts 32 are connected and fixed by fasteners so that an even number of arc-shaped seats 31 can be connected and fixed into a whole and clamped on the outside of the utility pole 10.

[0022] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. An insulating crossarm for a transmission line tower, comprising two brackets (50), each bracket (50) having an insulator (60) fixedly mounted on it, characterized in that, It also includes an auxiliary fixing component (20), a clamping component (30), and two double-ended screws (40). The auxiliary fixing component (20) and the clamping component (30) are both sleeved on the outside of the utility pole (10) and clamped and fixed thereto. The two double-ended screws (40) are respectively inserted on the opposite sides of the top of the auxiliary fixing component (20), and the ends of the double-ended screws (40) pass through the adjacent brackets (50). The ends of the double-ended screws (40) are fitted with two nuts that are threaded to them and used to fix the adjacent brackets (50).

2. The insulating crossarm of a transmission line tower according to claim 1, characterized in that: The auxiliary fixing assembly (20) includes two base supports (21) and two positioning brackets (22). The two base supports (21) are symmetrically arranged on opposite sides of the utility pole (10), and both ends of the base supports (21) have clamping parts (211) that contact the outer wall of the utility pole (10). The opposite sides of the two base supports (21) have connecting seats (212). The connecting seats (212) are fixedly connected to the bottom end of the positioning brackets (22). The middle section of the positioning brackets (22) is connected to the clamp assembly (30). The top end of the clamp assembly (30) is passed through by an adjacent double-headed screw (40) and welded to it.

3. An insulating crossarm for a transmission line tower according to claim 2, characterized in that: The clamping portions (211) formed at both ends of the base (21) are symmetrically inclined inward at a certain angle, and anti-slip textures or anti-slip pads are formed on the inner sidewall of the clamping portions (211).

4. An insulating crossarm for a transmission line tower according to claim 2 or 3, characterized in that: The clamp assembly (30) includes an even number of arc-shaped seats (31), the inner wall of each arc-shaped seat (31) is in contact with the utility pole (10), the end of the arc-shaped seat (31) near the positioning bracket (22) forms a positioning bracket connecting part (33) that fits and contacts the positioning bracket (22), the end of the arc-shaped seat (31) away from the positioning bracket (22) forms an arc-shaped seat connecting part (32), the arc-shaped seat connecting part (32) is connected and fixed to the adjacent positioning bracket (22) by fasteners, and every two adjacent arc-shaped seat connecting parts (32) are connected and fixed by fasteners.

5. An insulating crossarm for a transmission line tower according to claim 4, characterized in that: Each of the aforementioned arc-shaped seats (31) also has anti-slip textures or anti-slip pads bonded to its inner wall.

6. An insulating crossarm for a transmission line tower according to claim 4, characterized in that: A circular hole is formed in the middle section of the positioning bracket (22), and a connecting hole (331) facing the circular hole of the positioning bracket (22) is formed on the connecting part (33) of the positioning bracket. The connecting hole (331) is set as an oblong hole or an elliptical hole.

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