阅读说明：本技术 一种便于维护的避雷器接地装置 (Lightning arrester grounding device convenient to maintain ) 是由 王云 于 2020-08-07 设计创作，主要内容包括：本发明公开了一种便于维护的避雷器接地装置,包括接地棒,所述所述接地棒的下端焊接有一个绝缘的机箱,所述接地棒和机箱共同埋设在地面中,所述接地棒埋设地面中部分绕轴设置有刮片圈,所述机箱的顶部箱壁上焊接有一个圆柱箱,所述圆柱箱的上方箱壁贯穿机箱的箱壁与接地棒的底端接触,所述圆柱箱内壁上密封滑动连接有一块活塞板。本发明装置中活塞板上的蒸发液受热而汽化推动压板向下滑动,带动螺纹轴圆盘发生旋转,由于圆盘上设有凹槽和凸块,当粗杆和细杆的下端与凹槽和凸块接触时,使整个粗杆与细杆产生振动,从而带动刮片圈振动将接地棒上的氧化层刮落,使接地装置具有自维护的功能。(The invention discloses a lightning arrester grounding device convenient to maintain, which comprises a grounding rod, wherein an insulated case is welded at the lower end of the grounding rod, the grounding rod and the case are jointly embedded in the ground, a scraping ring is arranged in the part, embedded in the ground, of the grounding rod and around a shaft, a cylindrical box is welded on the box wall at the top of the case, the box wall above the cylindrical box penetrates through the box wall of the case to be in contact with the bottom end of the grounding rod, and a piston plate is connected to the inner wall of the cylindrical box in a sealing and sliding mode. The device provided by the invention has the advantages that the evaporated liquid on the piston plate is heated to be vaporized to push the pressing plate to slide downwards, the threaded shaft disc is driven to rotate, and the groove and the bump are arranged on the disc, so that when the lower ends of the thick rod and the thin rod are in contact with the groove and the bump, the whole thick rod and the thin rod vibrate, and the scraping ring is driven to vibrate to scrape an oxide layer on the grounding rod, and the grounding device has a self-maintenance function.)

1. The lightning arrester grounding device convenient to maintain comprises a grounding rod (1) and is characterized in that the lower end of the grounding rod (1) is welded with an insulating case (2), the grounding rod (1) and the case (2) are embedded in the ground together, a scraping ring (3) is arranged in the ground embedded by the grounding rod (1) partially around a shaft, a cylindrical case (4) is welded on the top case wall of the case (2), the upper case wall of the cylindrical case (4) penetrates through the case wall of the case (2) to be contacted with the bottom end of the grounding rod (1), a piston plate (5) is connected on the inner wall of the cylindrical case (4) in a sealing and sliding manner, two vertical push rods (6) are welded on the lower end face of the piston plate (5), the lower ends of the two push rods (6) penetrate through the bottom case wall of the cylindrical case (4) and a pressing plate (7) is welded together, and a maintenance device is arranged in the case (2).

2. The lightning arrester grounding device convenient to maintain according to claim 1, characterized in that the maintaining device comprises a threaded shaft (8), a cylindrical rotating groove (14) is formed in the center of the bottom inner wall of the case (2), the optical axis part at the lower end of the threaded shaft (8) is rotatably connected with the rotating groove (14), the upper threaded part of the threaded shaft (8) is in threaded connection with the pressing plate (7), a disc (9) is coaxially welded at the lower end of the threaded shaft (8), two through holes are respectively formed in the two sides of the top case wall of the case (2), a thick rod (10) and a thin rod (11) are respectively and slidably connected with two through holes on the case (2), the upper end of the thick rod (10) is fixedly connected with the upper end of the scraper ring (3), and the upper end of the thin rod (11) is welded with the lower end of the scraper ring (3), the lower ends of the thick rod (10) and the thin rod (11) are respectively abutted against the upper end face of the disc (9).

3. The arrester grounding device convenient to maintain according to claim 2, characterized in that a plurality of grooves (12) are formed on the upper end surface of the disc (9) around the axis, the bottom of each groove (12) is an arc surface, two ends of the arc surface are connected with the upper end surface of the disc (9), a bump (13) is welded on each of two sides of the notch of each groove (12), the upper end surface of each bump (13) is an arc surface, two ends of the arc surface are connected with the upper end surface of the disc (9), the width of the thin rod (11) is 10mm smaller than that of the groove (12), and the width of the thick rod (10) is 20mm larger than that of the groove (12).

4. The lightning arrester grounding device convenient to maintain according to claim 1, characterized in that the blade ring (3) is made of silicon steel, and the contact position of the blade ring (3) and the grounding rod (1) is a sheet structure.

5. The lightning arrester grounding device convenient to maintain according to claim 2, characterized in that limiting blocks (15) are welded on two side groove walls of the rotating groove (14), an electromagnet (16) is arranged at the bottom of the rotating groove (14), the bottom of the threaded shaft (8) is abutted against the limiting blocks (15), a permanent magnet (17) is fixedly connected to the bottom of the threaded shaft (8), and the electromagnet (16) is connected with an external alternating current through a wire.

Technical Field

The invention relates to the technical field of electric power facilities, in particular to a lightning arrester grounding device convenient to maintain.

Background

For the existing arrester grounding device, a fixed metal rod is generally adopted, generally composed of a copper rod, an iron rod or an alloy rod, and is directly inserted into the ground, and the upper end of the fixed metal rod is connected with the arrester. Because the underground environment is severe, the surface of the grounding rod is easy to oxidize, the grounding resistance is increased, and if the problem is not dealt with in time, the lightning arrester can not normally protect the electrical equipment when lightning strike occurs. After oxidation, the grounding rod must be pulled out for repair treatment, or a new grounding rod is directly adopted for replacement, so that the maintenance cost is high.

Although some present device arrester earthing devices have the oxide layer and get rid of the function, the function of getting rid of these devices all triggers the start-up only under the thunder and lightning condition, and the treatment effect is relatively poor, and when no thunder and lightning weather for a long time, the earth bar is because of being in ground for a long time, and surface oxide layer thickness constantly increases, can lead to the thunder and lightning to come to make temporarily too thick oxide layer can not effectively get rid of, can't normally protect electrical equipment.

Disclosure of Invention

The invention aims to solve the problems that the surface of a grounding rod in a lightning arrester grounding device in the prior art is easy to oxidize and is not convenient to maintain, and provides the lightning arrester grounding device convenient to maintain.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a lightning arrester earthing device convenient to maintain, includes the earth bar, the lower extreme welding of earth bar has an insulating quick-witted case, earth bar and quick-witted case are buried underground jointly in ground, the earth bar is buried underground the ground part and is provided with around the axle and scrape the piece circle, the welding has a cylinder case on the top tank wall of machine case, the top tank wall of cylinder case runs through the tank wall of machine case and the bottom contact of earth bar, sealed sliding connection has a piston board on the cylinder incasement wall, the lower terminal surface welding of piston board has by two vertical push rods, two the lower extreme of push rod all runs through the bottom tank wall of cylinder case and has a clamp plate in the common welding, the machine incasement is equipped with the maintenance device.

In foretell arrester earthing device convenient to maintain, it includes the screw thread axle to maintain the device, the bottom inner wall central point of machine case puts the department and sets up the rotation groove of a cylinder type, the optical axis part of screw thread axle lower extreme rotates in rotating the groove and connects, the upper end screw thread part and the clamp plate of screw thread axle pass through threaded connection, the coaxial welding of lower tip coaxial coupling of screw thread axle has a disc, a through-hole has respectively been seted up to the both sides position of the top tank wall of machine case, sliding connection has thick pole and thin pole respectively on two through-holes on the machine case, the upper end of thick pole and the upper end fixed connection who scrapes the piece circle, the upper end of thin pole and the lower extreme welding of scraping the piece circle, the lower extreme of thick pole and thin pole all offsets with the up end of disc.

In foretell arrester earthing device convenient to maintain, a plurality of recesses have been seted up around the axle center on the up end of disc, and the bottom of every recess is the arc surface, and the both ends of arc surface are connected with the up end of disc, every a lug, every has all been welded to the notch both sides of recess the up end of lug is the arc surface, and the both ends of arc surface are connected with the up end of disc, the width of thin pole is 10mm less than the recess, the width of thick pole is 20mm more than the recess.

In foretell arrester earthing device convenient to maintain, the blade ring uses the silicon steel material to make, the blade ring is the lamellar structure with the department that the earth bar offseted.

In foretell arrester earthing device convenient to maintain, the welding has the stopper on the both sides cell wall of rotating the groove, the bottom in rotating the groove is provided with the electro-magnet, the bottom and the stopper of screw thread axle offset, the bottom fixedly connected with permanent magnet of screw thread axle, the electro-magnet passes through the wire and links to each other with external alternating current.

Compared with the prior art, the invention has the advantages that:

1. when the device is in thunder weather and an oxide layer appears on the surface of the grounding rod, because the resistance between the grounding rod and the ground is increased, a large amount of heat generated by thunder passing through the grounding rod is transmitted to the inside of the cylindrical box through the box wall, evaporated liquid on the piston plate is heated and vaporized to push the pressing plate to slide downwards, the threaded shaft disc is driven to rotate, and because the groove and the bump are arranged on the disc, when the lower ends of the thick rod and the thin rod are in contact with the groove and the bump, the whole thick rod and the thin rod vibrate, so that the scraping ring is driven to vibrate to scrape the oxide layer on the grounding rod, and the grounding device has a self-maintenance function;

2. in the self-maintenance process, because the width of the thick rod exceeds the width of the groove and is upwards jacked up by the convex block, and because the width of the thin rod on the other side is smaller than the width of the groove, the lower end of the thin rod slides back to the bottom of the groove, when the thick rod moves upwards and the thin rod moves downwards, the thick rod plays a tensioning effect on the scraping sheet ring, so that the thin sheet end of the inner ring of the scraping sheet ring is more tightly propped against the grounding rod, and the removal effect of the oxide layer is improved;

3. according to the lightning arrester grounding device, external alternating current is introduced to the electromagnet at the bottom of the case periodically by manpower, so that the electromagnet is enabled to change magnetism back and forth, the permanent magnet at the bottom of the threaded shaft is enabled to take the magnetic force action of the electromagnet, the disc is enabled to vibrate up and down, the scraper ring is driven to vibrate under the conduction of the thick rod and the thin rod to scrape an oxide layer on the grounding rod, on one hand, prevention preparation is made for the coming of lightning weather, on the other hand, the thickness of the oxide layer on the grounding rod is prevented from being increased continuously, the maintenance device is difficult to process and maintained periodically in the next lightning weather, and the service life of the lightning arrester grounding.

Drawings

Fig. 1 is a schematic structural diagram of an arrester grounding device convenient for maintenance according to the present invention;

fig. 2 is a schematic structural view of a disc portion in an arrester grounding device convenient for maintenance according to the present invention;

fig. 3 is an enlarged schematic view of a lightning arrester grounding device convenient for maintenance according to the present invention at a point a;

fig. 4 is an enlarged schematic view of a lightning arrester grounding device convenient for maintenance according to the present invention at B.

In the figure: the device comprises a grounding rod 1, a chassis 2, a scraper ring 3, a cylindrical box 4, a piston plate 5, a push rod 6, a press plate 7, a threaded shaft 8, a disc 9, a thick rod 10, a thin rod 11, a groove 12, a convex block 13, a rotating groove 14, a limiting block 15, an electromagnet 16 and a permanent magnet 17.

Detailed Description

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are only for illustrative purposes and are not intended to limit the scope of the present invention.