A lightning protection device for overhead transmission lines

Abstract

This invention discloses a lightning protection device for overhead transmission lines. Its structure includes a fixed base, a rotating base, an intermediate limiting base, and a lightning rod. The fixed base contains a grounding wire, and the lightning rod is mounted on the fixed base via the rotating base. The intermediate limiting base is located on the fixed base between two lightning rods, and it contacts and engages with the lightning rods. The intermediate limiting base includes a limiting body that engages with a driving mechanism. The limiting body contains two or more fixing heads. When the slider moves along the slider guide rail, the fixing heads are pushed out towards the opening of the movable slot. The fixing heads and the slots form a fixed structure, preventing the lightning rod from rotating or swinging under external force, thus ensuring the lightning rod remains vertical.

Description

Technical Field

[0001] This invention relates to the field of electrical engineering technology, and in particular, to a lightning protection device for overhead transmission lines. Background Technology

[0002] As a crucial component of the power system, overhead transmission lines must withstand prolonged outdoor exposure and resist environmental erosion, especially damage from adverse external factors. Among these natural disasters, lightning strikes are the most damaging. During the rainy season, lightning strikes are a significant factor affecting the safe and stable operation of the power grid, and lightning-induced power outages can cause enormous losses to people's lives. Therefore, lightning protection for power grids is a very important task. Lightning protection devices mainly consist of lightning conductors, lightning rods, protective gaps, various surge arresters, lightning grounding, reactor coils, capacitor banks, arc suppression coils, automatic reclosing devices, etc. The purpose of installing lightning protection devices on buildings is to protect buildings that have been struck by lightning and prevent or reduce the occurrence of lightning accidents. However, in practice, lightning protection devices still have the following problems:

[0003] Because lightning rods are installed at high altitudes, when the tip of the lightning rod is caught by a radio antenna or a clothesline, the installation position of the lightning rod is easily shaken by the external force, resulting in the rod not being vertical and thus failing to safely conduct the lightning current to the ground. Summary of the Invention

[0004] To address the above problems, the present invention provides a lightning protection device for overhead transmission lines.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: an overhead transmission line lightning protection device, the structure of which includes a fixed base, a rotating base, an intermediate limiting base, and a lightning rod. The fixed base is provided with a grounding wire, and the lightning rod is installed on the fixed base through the rotating base. The intermediate limiting base is located on the fixed base and between the two lightning rods, and the intermediate limiting base is in contact with the lightning rod.

[0006] As a further improvement of the present invention, the lightning rod includes a needle body, a base, and a slot. The needle body is mounted on the base, and the base is fixedly connected to the intermediate limiting seat through the slot.

[0007] As a further improvement of the present invention, the intermediate limiting seat includes a receiving groove, a driving swing member, a movable groove, and a limiting body. The receiving groove and the movable groove are an integrated structure. The movable groove is provided with two limiting bodies inside. The limiting bodies are mechanically connected to the driving swing member. The driving swing member is installed inside the receiving groove. The movable groove is provided with a slot that matches the limiting body. The limiting body passes through the slot and is fixed to the base.

[0008] As a further improvement of the present invention, the driving component includes a slider guide rail, a slider, and a connecting rod. The slider moves along the slider guide rail. Two connecting rods are provided. One end of the connecting rod is fixedly connected to the slider, and the other end is connected to the limiting body.

[0009] As a further improvement of the present invention, the limiting body includes a fixing head and a supporting slide, the supporting slide is provided with two or more fixing heads, the fixing head and the slot are engaged, and the supporting slide is connected to the connecting rod.

[0010] As a further improvement of the present invention, the fixing head is composed of an arc-shaped guide rail, a circular track, a wheel, a swing arm, a mounting groove, and a magnetic block. The arc-shaped guide rail is provided with a mounting groove, the magnetic block moves along the arc-shaped guide rail, and the magnetic block is fitted inside the mounting groove. One end of the swing arm is fixed to the wheel, and the inner side of the mounting groove is provided with a movable opening. The other end of the swing arm passes through the movable opening and connects to the magnetic block. The wheel moves along the circular track.

[0011] As a further improvement of the present invention, the magnetic card block is driven by a rocker arm, and the magnetic card block moves to the notch position of the arc-shaped guide rail and engages with the card slot by magnetic adsorption.

[0012] As a further improvement of the present invention, the mounting groove includes a mounting base, a movable cavity, rubber scrapers, and a spring. The mounting base is provided with two or more rubber scrapers, and the opening of the mounting base is funnel-shaped. The movable cavity is provided with a spring, which is connected to the mounting base. Magnetic blocks are movably engaged between the rubber scrapers.

[0013] The beneficial effects of this invention are:

[0014] 1. The present invention has a limiting body in the intermediate limiting seat that cooperates with the driving swing component. The limiting body has two or more fixing heads. When the slider moves along the slider guide rail, the fixing head is pushed out to the position of the movable groove. The fixing head and the slot form a fixation, which prevents the lightning rod from rotating and swinging under external force, so that the lightning rod always remains vertical.

[0015] 2. The fixing head of the present invention is provided with a magnetic card block. The magnetic card block moves along the arc-shaped guide rail under the drive of the swing rod. The magnetic card block and the card slot form a double-sided locking and fixing. The side of the arc-shaped guide rail that contacts the card slot is provided with a magnetic layer. The inside of the card slot is provided with an iron layer. The magnetic adsorption and locking method can further improve the fixing effect between the fixing head and the card slot.

[0016] 3. The mounting groove of the present invention is equipped with a rubber scraper and a spring, and the opening of the mounting base is a funnel-shaped structure. When the magnetic card block moves into the mounting groove along the arc-shaped guide rail, the funnel-shaped opening can facilitate the entry of the magnetic card block. The mounting base, together with the spring, has the function of opening and closing left and right. While not hindering the entry of the magnetic card block, the rubber scraper can be used to thoroughly remove impurities from the surface of the magnetic card block. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an overhead transmission line lightning protection device according to the present invention.

[0018] Figure 2 This is a schematic diagram of the internal structure of the intermediate limiting seat of the present invention.

[0019] Figure 3 This is a schematic diagram of the state structure of the drive ornament after it is opened according to the present invention.

[0020] Figure 4 This is a schematic diagram of the structure of the fixing head of the present invention.

[0021] Figure 5 This is a schematic diagram of the magnetic card block of the present invention in the state of engaging with the card slot after moving along the arc-shaped guide rail.

[0022] Figure 6 This is a schematic diagram of the internal structure of the mounting slot of the present invention.

[0023] In the diagram: Fixed seat 1, Rotating seat 2, Intermediate limit seat 3, Lightning rod 4, Needle body 41, Base 42, Slot 43, Receiving slot 31, Driving swing piece 32, Movable slot 33, Limiting body 34, Slider guide rail 321, Slider 322, Connecting rod 323, Fixed head 341, Support slide 342, Arc guide rail 41a, Circular track 41b, Wheel 41c, Swing rod 41d, Mounting slot 41e, Magnetic block 41f, Mounting seat 1e1, Movable cavity 1e2, Rubber scraper 1e3, Spring 1e4. Implementation

[0024] To make the technical means, creative features, objectives, and effects of this invention easily understood, Figures 1-6 The structure of the lightning protection device according to an embodiment of the present invention is illustrated schematically. The present invention will be further described below in conjunction with specific embodiments. Example

[0025] like Figures 1-6As shown, this invention provides a lightning protection device for overhead transmission lines. Its structure includes a fixed base 1, a rotating base 2, an intermediate limiting base 3, and a lightning rod 4. The fixed base 1 has a grounding wire. The lightning rod 4 is mounted on the fixed base 1 via the rotating base 2. The intermediate limiting base 3 is located on the fixed base 1 and between two lightning rods 4. The intermediate limiting base 3 contacts and engages with the lightning rod 4. The lightning rod 4 includes a needle body 41, a base 42, and a slot 43. The needle body 41 is mounted on the base 42, and the base 42 is fixedly connected to the intermediate limiting base 3 via the slot 43. The intermediate limiting base 3 includes a receiving groove 31, a driving element 32, a movable groove 33, and a limiting body 34. The 31 and the movable groove 33 are an integrated structure. The movable groove 33 has two limiting bodies 34 inside, which are mechanically connected to the driving swing component 32. The driving swing component 32 is installed inside the receiving groove 31. The movable groove 33 has a slot that matches the limiting body 34. The limiting body 34 passes through this slot and is fixed to the base 42. The driving swing component 32 includes a slider guide rail 321, a slider 322, and a connecting rod 323. The slider 322 moves along the slider guide rail 321. Two connecting rods 323 are provided; one end of each connecting rod 323 is fixedly connected to the slider 322, and the other end is connected to the limiting body 34. The limiting body 34 includes a fixed head 341 and a supporting slide. 342, the support slide 342 is provided with two or more fixing heads 341, the fixing heads 341 are engaged with the slots 43, the support slide 342 is connected to the connecting rod 323, the fixing head 341 is composed of an arc-shaped guide rail 41a, a circular track 41b, a wheel 41c, a swing rod 41d, a mounting groove 41e, and a magnetic block 41f. The arc-shaped guide rail 41a is provided with a mounting groove 41e, the magnetic block 41f moves along the arc-shaped guide rail 41a, and the magnetic block 41f fits inside the mounting groove 41e. One end of the swing rod 41d is fixed to the wheel 41c, the inner side of the mounting groove 41e is provided with an opening, and the other end of the swing rod 41d passes through. The movable opening is connected to the magnetic locking block 41f. The wheel 41c moves along the circular track 41b. The magnetic locking block 41f is driven by the swing rod 41d. The magnetic locking block 41f moves to the notch position of the arc-shaped guide rail 41a and engages with the slot 43 by magnetic adsorption. The mounting slot 41e includes a mounting base 1e1, a movable cavity 1e2, a rubber scraper 1e3, and a spring 1e4. The mounting base 1e1 is provided with two or more rubber scrapers 1e3. The opening of the mounting base 1e1 is funnel-shaped. The movable cavity 1e2 is provided with a spring 1e4. The spring 1e4 is connected to the mounting base 1e1. The magnetic locking block 41f is movably engaged between the rubber scrapers 1e3.

[0026] The working principle of the lightning protection device in the above technical solution is explained below:

[0027] When using this invention, the protective device must first be installed in a suitable position, and then the lightning rod 4 must be aligned so that the lightning rod 4 is perpendicular to the fixed base 1. In order to ensure that the lightning rod 4 is in a vertical state for a long time and is not tilted by external objects, when the lightning rod 4 is aligned, a slot 43 is provided on the opposite side of the base 42 used to connect the rod body 41. During operation, the wheel 41c starts to move along the circular track 41b. At this time, the swing rod 41d swings and drives the magnetic block 41f placed inside the mounting groove 41e to move along the arc guide rail 41a to the guide rail notch position, that is, after contacting the slot 43, the magnetic block 41f is engaged in the slot 43 from both sides. The magnetic layer of the magnetic block 41f and the inside of the slot 43 form a secondary fixation, thereby improving the fixation stability of the lightning rod 4. Under the action of external force, the verticality of the lightning rod 4 can still be guaranteed.

[0028] After the lightning rod 4 is fixed, the magnetic layer in the magnetic card block 41f will attract magnetic metals from the outside. Therefore, when the lightning protection device is under maintenance, the magnetic card block 41f is reset and moved into the mounting groove 41e. It enters through the opening of the mounting base 1e1. The opening is funnel-shaped and large, allowing the magnetic card block 41f to be placed better in the mounting groove 41e. Since the width of the magnetic card block 41f is greater than the gap between the two mounting bases 1e1, the mounting bases 1e1 on both sides are squeezed and opened outward when it enters. During the opening, the rubber scraper 1e3 on the mounting base 1e1 removes impurities from the surface of the magnetic card block 41f to prevent too many impurities from remaining on the surface of the magnetic card block 41f and affecting its magnetic attraction.

Claims

1. A lightning protection device for overhead transmission lines, characterized in that: Its structure includes a fixed base (1), a rotating base (2), an intermediate limiting base (3), and a lightning rod (4). The fixed base (1) is provided with a grounding wire, and the lightning rod (4) is installed on the fixed base (1) through the rotating base (2). The intermediate limiting base (3) is located on the fixed base (1) and between the two lightning rods (4). The intermediate limiting base (3) is in contact with the lightning rod (4). The intermediate limiting seat (3) includes a receiving groove (31), a driving swing component (32), a movable groove (33), and a limiting body (34). The receiving groove (31) and the movable groove (33) are an integrated structure. The movable groove (33) is provided with two limiting bodies (34) inside. The limiting bodies (34) are mechanically connected to the driving swing component (32). The driving swing component (32) is installed inside the receiving groove (31). The movable groove (33) is provided with a fitting to the limiting body (34). The slot is through which the limiting body (34) passes and is fixed to the base (42). The driving swing component (32) includes a slider guide rail (321), a slider (322), and a connecting rod (323). The slider (322) moves along the slider guide rail (321). There are two connecting rods (323). One end of the connecting rod (323) is fixedly connected to the slider (322), and the other end is connected to the limiting body (34). The limiting body (34) includes a fixing head (341). The support slide (342) is provided with two or more fixing heads (341), the fixing heads (341) and the slots (43) are connected by a snap-fit ​​connection, the support slide (342) is connected to the connecting rod (323), the fixing head (341) is composed of an arc-shaped guide rail (41a), a circular track (41b), a wheel (41c), a swing rod (41d), a mounting groove (41e), and a magnetic block (41f), the arc-shaped guide rail (41a) is connected to the connecting rod (323), the supporting slide (342) is provided with two or more fixing heads (341), the fixing heads (341) and the slots (43) are connected by a snap-fit ​​connection, the supporting slide (342) and the connecting rod (32 ... 1a) is provided with a mounting groove (41e), the magnetic card block (41f) moves along the arc-shaped guide rail (41a), the magnetic card block (41f) is fitted inside the mounting groove (41e), one end of the swing rod (41d) is fixed to the wheel (41c), the inner side of the mounting groove (41e) is provided with a movable opening, the other end of the swing rod (41d) passes through the movable opening and is connected to the magnetic card block (41f), and the wheel (41c) moves along the circular track (41b).

2. The overhead transmission line lightning protection device according to claim 1, characterized in that: The lightning rod (4) includes a needle body (41), a base (42), and a slot (43). The needle body (41) is mounted on the base (42), and the base (42) is fixedly connected to the intermediate limiting seat (3) through the slot (43).

3. The overhead transmission line lightning protection device according to claim 1, characterized in that: The magnetic card block (41f) is driven by a rocker arm (41d). The magnetic card block (41f) moves to the notch position of the arc-shaped guide rail (41a) and engages with the card slot (43) by magnetic adsorption.

4. The overhead transmission line lightning protection device according to claim 1, characterized in that: The mounting groove (41e) includes a mounting base (1e1), a movable cavity (1e2), a rubber scraper (1e3), and a spring (1e4). The mounting base (1e1) is provided with two or more rubber scrapers (1e3). The opening of the mounting base (1e1) is funnel-shaped. The movable cavity (1e2) is provided with a spring (1e4). The spring (1e4) is connected to the mounting base (1e1). Magnetic blocks (41f) are movably engaged between the rubber scrapers (1e3).

Images