A resistance reducing clamp for a terminal block

Abstract

The utility model provides a kind of wiring board resistance reduction clamp, effectively solve the problem that traditional power-off maintenance mode has been difficult to meet the urgent needs of current power grid safety and stability operation and power supply continuity;Its solution technical scheme is, including open downward U-shaped frame, multiple spring pieces are all on the left and right side walls of U-shaped frame, wedge-shaped inverted tip portion is set on the side of the lower end of spring piece close to U-shaped frame center, multiple spring pieces on the same side are evenly distributed along front-back direction, the lower end of spring piece and U-shaped frame are hinged together by bolt, there are multiple soft connecting pieces in the upper end of U-shaped frame cavity, soft connecting piece can connect the spring piece on both sides together;High-elasticity spring piece is arranged between spring piece and U-shaped frame side plate, one end of high-elasticity spring piece and U-shaped frame side wall are hinged by fixed shaft, the other end of high-elasticity spring piece contacts corresponding spring piece;The utility model structure is ingenious, can quickly and effectively reduce contact resistance under the condition of not power-off, and is suitable for special emergency repair work.

Description

Technical Field

[0001] This utility model relates to the field of power terminal block connection technology, and in particular to a terminal block resistance reduction clip. Background Technology

[0002] In power distribution networks, terminal blocks are critical connections between switches, disconnectors, and conductors. Currently, due to the aging of some power grid equipment and the high maintenance requirements, these devices are often exposed to harsh outdoor conditions, including wind, sand, and temperature fluctuations. This exposure can cause thermal expansion and contraction, surface oxidation, and increased contact resistance in the terminal blocks, leading to overheating. Prolonged overheating of terminal blocks accelerates equipment aging, posing risks of fire and power outages, and severely impacting power grid quality and public reputation.

[0003] Regarding the aforementioned overheating issue, there are currently two main approaches: one is traditional power outage maintenance, but in situations with weak grid infrastructure and single-line, single-transformer configurations, load transfer often fails, leading to numerous complaints and significant difficulties in handling the problem; the other is enhanced monitoring by operations and maintenance personnel, but this is merely a passive measure and cannot fundamentally solve the actual problem. Therefore, in emergency scenarios where grid upgrades are lagging and load transfer is impossible, the traditional power outage maintenance model is no longer sufficient to meet the urgent needs for safe and stable grid operation and continuous power supply.

[0004] To address the aforementioned issues, a junction box resistance-reducing clip is provided, which can quickly and effectively reduce contact resistance without power interruption, making it suitable for special emergency repair work. Utility Model Content

[0005] In response to the above situation and to overcome the shortcomings of the existing technology, this utility model provides a junction box resistance reduction clip, which effectively solves the problem that the traditional power outage maintenance mode can no longer meet the urgent needs of the current power grid for safe and stable operation and power supply continuity.

[0006] The technical solution includes a U-shaped frame with the opening facing downwards. There are multiple spring pieces on both the left and right side walls of the U-shaped frame. The lower end of the spring piece is provided with a wedge-shaped tip on the side near the center of the U-shaped frame. Multiple spring pieces on the same side are evenly distributed in the front-back direction. The lower end of the spring piece is hinged to the U-shaped frame by a pin. There are multiple flexible connecting pieces at the upper end of the cavity of the U-shaped frame. The flexible connecting pieces can connect the spring pieces on both sides together. A high-elasticity spring piece is provided between the spring piece and the side plate of the U-shaped frame. One end of the high-elasticity spring piece is hinged to the side wall of the U-shaped frame by a fixed shaft, and the other end of the high-elasticity spring piece contacts its corresponding spring piece.

[0007] Furthermore, the lower end of the spring sheet is an inclined surface, and the inclined surfaces of the left and right spring sheets form a V-shape with the opening facing downwards.

[0008] Furthermore, the U-shaped frame is assembled from multiple sheet metal pieces.

[0009] Furthermore, the U-shaped frame has sleeves and hanging rings on its top, left, and right sides.

[0010] This invention has a clever structure that can quickly and effectively reduce contact resistance without power interruption, making it suitable for special emergency repair work. Attached Figure Description

[0011] Figure 1 This is a perspective view of the present utility model.

[0012] Figure 2 For the purpose of this utility model explosion Figure 1 .

[0013] Figure 3 For the purpose of this utility model explosion Figure 2 .

[0014] Figure 4 This is the front view of the present utility model.

[0015] Figure 5 This is a side view of the present invention. Detailed Implementation

[0016] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0017] Depend on Figures 1 to 5 The present invention includes a U-shaped frame 1 with its opening facing downwards. Multiple spring pieces 2 are located on both the left and right side walls of the U-shaped frame 1. A wedge-shaped pointed portion 3 is provided on the lower end of each spring piece 2 near the center of the U-shaped frame 1. Multiple spring pieces 2 on the same side are evenly distributed along the front-back direction. The lower ends of the spring pieces 2 are hinged to the U-shaped frame 1 via pins 4. Multiple flexible connecting pieces 5 are located at the upper end of the cavity of the U-shaped frame 1, connecting the spring pieces 2 on both sides together. A high-elasticity spring piece 6 is provided between the spring piece 2 and the side plate of the U-shaped frame 1. One end of the high-elasticity spring piece 6 is hinged to the side wall of the U-shaped frame 1 via a fixed shaft, and the other end of the high-elasticity spring piece 6 contacts its corresponding spring piece 2.

[0018] To facilitate insertion into the terminal block, the lower end of the spring 2 is an inclined surface, and the inclined surfaces of the left and right spring 2 form a V-shape with the opening facing downwards.

[0019] For ease of manufacturing, the U-shaped frame 1 is assembled from multiple sheet metal parts.

[0020] To accommodate the installation of insulating rods at height and facilitate personnel operation, the U-shaped frame 1 has sleeves 7 and hanging rings 8 on its upper, left, and right sides.

[0021] It is worth noting that the wedge-shaped pointed part 3 at the lower end of the spring 2 prevents the clamp from sliding out of the terminal block, and the inclined surface at the lower end of the spring 2 facilitates the insertion of the terminal block.

[0022] When in use, the operator can insert the insulating operating rod into the clamp sleeve 7, which can be installed vertically or horizontally. After reaching the initial installation position, the operator can use the insulating rod to hook the hanging ring 8 and pull it to make multiple spring pieces 2 clamp the terminal block. Because the lower end of the spring piece 2 has a pointed part 3, it can prevent the clamp from slipping off the terminal block.

[0023] In this solution, a high-conductivity alloy material and an elastic pressure structure are used to form a parallel conductive path with multiple springs 2 and the terminal block. The internal multi-point contact design greatly increases the effective contact area and reduces the resistance of the original path.

[0024] This solution can be safely installed while the power is on, avoiding economic losses (such as interruption of industrial production lines) and social impacts (such as power supply guarantee for hospitals and transportation hubs) caused by power outages. It breaks through the bottleneck of traditional power outage maintenance and is suitable for emergency scenarios where power grid transformation is lagging behind and load cannot be transferred, providing a flexible and safe emergency handling method for power operation and maintenance.

Claims

1. A junction box resistance-reducing clip, characterized in that, The U-shaped frame (1) with its opening facing downwards has multiple spring pieces (2) on both the left and right side walls. The lower end of the spring piece (2) is provided with a wedge-shaped tip (3) on the side near the center of the U-shaped frame (1). Multiple spring pieces (2) on the same side are evenly distributed in the front-back direction. The lower end of the spring piece (2) is hinged to the U-shaped frame (1) by a pin (4). There are multiple soft connecting pieces (5) at the upper end of the cavity of the U-shaped frame (1). The soft connecting pieces (5) can connect the spring pieces (2) on both sides together. A high-elasticity spring piece (6) is provided between the spring piece (2) and the side plate of the U-shaped frame (1). One end of the high-elasticity spring piece (6) is hinged to the side wall of the U-shaped frame (1) by a fixed shaft. The other end of the high-elasticity spring piece (6) is in contact with the corresponding spring piece (2).

2. The junction box resistance-reducing clip according to claim 1, characterized in that, The lower end of the spring piece (2) is an inclined surface, and the inclined surfaces of the spring pieces (2) on the left and right sides form a V-shape with the opening facing downward.

3. The junction box resistance-reducing clip according to claim 1, characterized in that, The U-shaped frame (1) is assembled from multiple sheet metal pieces.

4. The junction box resistance-reducing clip according to claim 1, characterized in that, The U-shaped frame (1) has sleeves (7) and hanging rings (8) on its upper, left and right sides.

Images