A live-line installation fitting for surge arresters

Abstract

This utility model discloses a live-line installation fitting for surge arresters, including a mounting frame, a U-shaped plate, and fasteners. The U-shaped plate is mounted on the mounting frame via fasteners. The mounting frame is a frame-shaped frame with an opening on one side. The bottom plate of the mounting frame has screw holes with threaded annular bolts. The top plate of the mounting frame has a second fixing hole and a third fixing hole in the middle. The U-shaped plate is fitted onto the top plate of the mounting frame and has fasteners. The U-shaped plate can be selectively connected to the second fixing hole or the third fixing hole via fasteners. This utility model, by setting a U-shaped plate on the top plate of the mounting frame and having an adjustable position for the U-shaped plate, can be applied to 63 mm or 80 mm crossarms, enabling multi-scenario applications.

Description

Technical Field

[0001] This utility model relates to the field of live-line working installation technology for surge arresters, specifically a type of hardware suitable for live-line working installation of surge arresters. Background Technology

[0002] Surge arresters are crucial overvoltage protection devices in power systems, primarily used to limit lightning and switching overvoltages on lines and electrical equipment. They are key equipment for ensuring the safe and stable operation of the power grid and improving power supply reliability. With socio-economic development, users' demands for power supply continuity are increasing, and the economic losses and social impacts caused by power outages for maintenance are becoming more significant. Therefore, conducting live-line work on distribution networks and transmission lines has become a core technical means to ensure uninterrupted power supply and improve operation and maintenance efficiency.

[0003] Currently, the traditional method for installing surge arresters on distribution lines with voltage levels such as 10kV is to perform the work by cutting off power. This method requires pre-planning a power outage and interrupting power supply to users. Not only is the operation process cumbersome and difficult to coordinate, but it also leads to reduced power supply reliability and economic losses, which can no longer meet the requirements of high reliability operation of modern distribution networks.

[0004] Therefore, it is necessary to provide a live-line installation fitting suitable for surge arresters to solve the above-mentioned technical problems. Utility Model Content

[0005] In view of the shortcomings of the prior art, this utility model provides a live-line installation fitting for surge arresters, which aims to solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a live-line installation fitting suitable for surge arresters, comprising an installation frame, a U-shaped plate, and fasteners. The U-shaped plate is mounted on the installation frame via fasteners. The installation frame is a frame-shaped frame with an opening on one side. The bottom plate of the installation frame is provided with screw holes, and annular bolts are threaded into the screw holes. The top plate of the installation frame is provided with a second fixing hole and a third fixing hole in the middle. The U-shaped plate is fitted onto the top plate of the installation frame, and fasteners are provided on the U-shaped plate. The U-shaped plate can be selectively connected to the second fixing hole or the third fixing hole via fasteners.

[0007] Furthermore, when the U-shaped plate is connected to the second fixing hole by fasteners, the distance between the U-shaped plate and the side plate of the mounting frame is adapted to the crossbeam with a width of millimeters.

[0008] Furthermore, when the U-shaped plate is connected to the third fixing hole via fasteners, the distance between the U-shaped plate and the side plate of the mounting frame is adapted to the crossbeam with a width of millimeters.

[0009] Furthermore, a fixing buckle is provided on the end of the annular bolt located on the top plate side of the mounting frame.

[0010] Furthermore, the top plate of the mounting frame is also provided with a first mounting hole and a second mounting hole.

[0011] Furthermore, the U-shaped plate is provided with a first fixing hole. When the U-shaped plate is fitted onto the top plate of the mounting frame, the first fixing hole and the second or third fixing hole are on the same axis.

[0012] Furthermore, the fastener includes a fixing bolt, a fixing nut, and a washer; when the first fixing hole and the second fixing hole are on the same axis, the fixing nut passes through the first fixing hole and the second fixing hole, and then the washer and the fixing nut are installed in sequence to complete the fastening; when the first fixing hole and the third fixing hole are on the same axis, the fixing nut passes through the first fixing hole and the third fixing hole, and then the washer and the fixing nut are installed in sequence to complete the fastening.

[0013] Compared with existing technologies, this utility model has the following advantages:

[0014] (1) This utility model can be screwed and fixed to the bolt of the surge arrester or the mounting bracket of the surge arrester through the first mounting hole or the second mounting hole, forming a surge arrester that can be installed on the ground. By using the insulated operating rod, the surge arrester can be installed on the ground, which can reduce the economic losses caused by power outages, avoid high-altitude operations, and improve work efficiency.

[0015] (2) This utility model sets a U-shaped plate on the top plate of the mounting frame. When the live-line installation hardware for the surge arrester is attached to the crossarm, the U-shaped plate is close to the back of the crossarm, which can make the horizontal direction of the device more secure and prevent slippage. The U-shaped plate is adjustable in position and can be used for 63 mm or 80 mm crossarms, realizing multi-scenario application. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the mounting hardware of this utility model.

[0017] Figure 2 This is a schematic diagram of the installation frame structure of this utility model.

[0018] Figure 3 This is a bottom view of the mounting hardware of this utility model.

[0019] Figure 4 This is a schematic diagram of the U-shaped plate structure of this utility model.

[0020] In the diagram, 1. Mounting frame; 2. Ring bolt; 3. First mounting hole; 4. Second mounting hole; 5. Fixing buckle; 6. U-shaped plate; 7. First fixing hole; 8. Fastener; 8.1 Fixing bolt; 8.2 Fixing nut; 8.3 Washer; 9. Second fixing hole; 10. Third fixing hole; 11. Screw hole. Detailed Implementation

[0021] like Figures 1-4 As shown, this utility model provides a technical solution: a live-line working installation hardware suitable for surge arresters, comprising: a mounting frame 1, a U-shaped plate 6, and fasteners 8. The U-shaped plate 6 is mounted on the mounting frame 1 via the fasteners 8. The mounting frame 1 is a frame-shaped frame with an opening on one side, through which the live-line working installation hardware suitable for surge arresters can be attached and fastened to the crossarm. The base plate of the mounting frame 1 is provided with screw holes 11, and annular bolts 2 are threaded into the screw holes 11. By rotating and tightening the annular bolts 2 using an insulated operating rod, the mounting frame 1 can be fixed on the crossarm. The top plate of frame 1 has a second fixing hole 9 and a third fixing hole 10 in the middle to facilitate the adjustment of the position of U-shaped plate 6. U-shaped plate 6 is fitted onto the top plate of mounting frame 1. Fasteners 8 are provided on U-shaped plate 6. U-shaped plate 6 can be selectively connected to the second fixing hole 9 or the third fixing hole 10 through fasteners 8. When installing the surge arrester, one side of U-shaped plate 6 is close to the back of the crossarm, which can make the horizontal direction of the device more secure and prevent slippage. By screwing the mounting frame 1 onto the surge arrester, and then using an insulated operating rod, the surge arrester can be installed while the power is on, reducing the economic losses caused by energization.

[0022] When the U-shaped plate 6 is connected to the second fixing hole 9 via the fastener 8, the distance between the U-shaped plate 6 and the side plate of the mounting frame 1 can be adapted to a crossbeam with a width of 63 mm.

[0023] When the U-shaped plate 6 is connected to the third fixing hole 10 via the fastener 8, the distance between the U-shaped plate 6 and the side plate of the mounting frame 1 can be adapted to a crossbeam with a width of 80 mm.

[0024] The end of the ring bolt 2 located on the top plate side of the mounting frame 1 is provided with a fixing buckle 5. The fixing buckle 5 can increase the contact area with the crossarm, making the live-line installation hardware suitable for surge arresters more securely fixed on the crossarm, and can also prevent the ring bolt 2 from falling off the mounting frame 1 due to excessive downward displacement.

[0025] The top plate of the mounting frame 1 has two first mounting holes 3 on the right side and two second mounting holes 4 on the left side. The live-line working installation hardware suitable for the surge arrester can be screwed and fixed to the mounting bracket of the surge arrester through the first mounting holes 3, and the live-line working installation hardware suitable for the surge arrester can be screwed and fixed to the original bolts of the surge arrester through the second mounting holes 4. The two second mounting holes 4 can be used to adapt to different surge arresters.

[0026] The two inner surfaces of the U-shaped plate 6 are attached to the two inner surfaces of the top plate of the mounting frame 1 to prevent the U-shaped plate 6 from rotating around the first fixing hole 7 during the fixing process, thereby preventing the U-shaped plate 6 from not being able to fit tightly against the back of the crossbeam.

[0027] The fastener 8 includes a fixing bolt 8.1, a fixing nut 8.2, and a washer 8.3. When the first fixing hole 7 and the second fixing hole 9 are on the same axis, the fixing bolt 8.1 passes through the first fixing hole 7 and the second fixing hole 9, and then the washer 8.3 and the fixing nut 8.2 are installed in sequence to complete the fastening. When the first fixing hole 7 and the third fixing hole 10 are on the same axis, the fixing bolt 8.1 passes through the first fixing hole 7 and the third fixing hole 10, and then the washer 8.3 and the fixing nut 8.2 are installed in sequence to complete the fastening.

[0028] The working principle of the live-line installation hardware for surge arresters provided by this utility model is as follows:

[0029] First, determine whether the surge arrester has a mounting bracket. If it does not have a mounting bracket, insert the bolts at the top or bottom of the surge arrester into the matching first mounting hole 3, then fit in the washer 8.2 and the fixing nut 8.3 and screw the nut in place. If it has a mounting bracket, place the mounting bracket on the upper surface of the top plate of the mounting frame 1, align the two mounting holes on the mounting bracket with the two second mounting holes 4 on the top plate of the mounting frame 1, then insert the bolts from the inside of the mounting frame 1, and finally fit the washer 8.2 and the fixing nut 8.3 from the top of the bolts and screw the fixing nut in place. By fixing the suitable live-line installation hardware to the surge arrester, a live-line installation of the surge arrester can be achieved. Then, depending on the width of the crossarm, the U-shaped plate 6 is screwed onto the second fixing hole 9 or the third fixing hole 10 using fasteners 8. This is suitable for 63 mm or 80 mm crossarms. Next, the entire surge arrester is lifted using an insulated operating rod, and the mounting frame 1 is attached to the crossarm. The U-shaped plate 6 needs to be close to the back of the crossarm to make the horizontal direction of the device more secure and prevent slippage. Then, another insulated operating rod is used to rotate the ring bolt 2, which moves the ring bolt 2 upward. The upward movement of the ring bolt 2 will cause the fixing buckle 5 to tighten against the crossarm, thus fixing the surge arrester to the crossarm. This allows for the live-line installation of the surge arrester on the ground, which reduces economic losses caused by power outages and eliminates the need for installation personnel to work at heights, reducing labor intensity.

[0030] Compared with related technologies, the live-line installation tool for surge arresters provided by this utility model has the following advantages:

[0031] The live-line installation fittings for surge arresters can be screwed and fixed to the surge arrester to form a live-line installation surge arrester. With the help of the insulated operating rod, the surge arrester can be installed on the ground, which reduces the economic losses caused by power outages and eliminates the need for installation personnel to work at heights, thus reducing labor intensity. In addition, the installation frame 1 is equipped with U-shaped plates 6 with adjustable spacing, which are suitable for crossarms of 63 mm and 80 mm. When the installation frame 1 is attached to the crossarm, the U-shaped plates 6 are close to the back of the crossarm, making the horizontal direction of the device more secure and preventing slippage.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A live-line installation fitting for surge arresters, characterized in that: The system includes a mounting frame (1), a U-shaped plate (6), and fasteners (8). The U-shaped plate (6) is mounted on the mounting frame (1) via fasteners (8). The mounting frame (1) is a frame-shaped frame with an opening on one side. The bottom plate of the mounting frame (1) is provided with screw holes (11), and the screw holes (11) are internally threaded with ring bolts (2). The top plate of the mounting frame (1) is provided with a second fixing hole (9) and a third fixing hole (10). The U-shaped plate (6) is fitted onto the top plate of the mounting frame (1), and fasteners (8) are provided on the U-shaped plate (6). The U-shaped plate (6) can be selectively connected to the second fixing hole (9) or the third fixing hole (10) via fasteners (8).

2. The live-line installation hardware for surge arresters according to claim 1, characterized in that: When the U-shaped plate (6) is connected to the second fixing hole (9) by fastener (8), the distance between the U-shaped plate (6) and the side plate of the mounting frame (1) is adapted to a crossbeam with a width of 63 mm.

3. The live-line installation hardware for surge arresters according to claim 1, characterized in that: When the U-shaped plate (6) is connected to the third fixing hole (10) by fastener (8), the distance between the U-shaped plate (6) and the side plate of the mounting frame (1) is adapted to the crossbeam with a width of 80 mm.

4. The live-line installation hardware for surge arresters according to claim 1, characterized in that: The annular bolt (2) is provided with a fixing buckle (5) on the end of the top plate of the mounting frame (1).

5. The live-line installation hardware for surge arresters according to claim 1, characterized in that: The top plate of the mounting frame (1) is also provided with a first mounting hole (3) and a second mounting hole (4).

6. The live-line installation hardware for surge arresters according to claim 1, characterized in that: The U-shaped plate (6) is provided with a first fixing hole (7). When the U-shaped plate (6) is fitted onto the top plate of the mounting frame (1), the first fixing hole (7) is on the same axis as the second fixing hole (9) or the third fixing hole (10).

7. The live-line installation hardware for surge arresters according to claim 1, characterized in that: The fastener (8) includes a fixing bolt (8.1), a fixing nut (8.2), and a washer (8.3). When the first fixing hole (7) and the second fixing hole (9) are on the same axis, the fixing nut (8.2) passes through the first fixing hole (7) and the second fixing hole (9) and then the washer (8.3) and the fixing nut (8.2) are installed in sequence to complete the fastening. When the first fixing hole (7) and the third fixing hole (10) are on the same axis, the fixing nut (8.2) passes through the first fixing hole (7) and the third fixing hole (10) and then the washer (8.3) and the fixing nut (8.2) are installed in sequence to complete the fastening.

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