Pillar type zinc oxide arrester

Abstract

The utility model discloses a pillar type zinc oxide lightning arrester, which comprises a lightning arrester main body, a disconnector, a busbar, a puncture wire clamp, a bracket, an insulating protective cover and a grounding rod, the disconnector, the busbar and the insulating protective cover are all arranged on the lightning arrester main body, the bracket is arranged at the joint of the lightning arrester main body and the disconnector, the puncture wire clamp and the grounding rod are both arranged on the busbar, and the grounding rod is arranged on the insulating protective cover. The piercing wire clamp comprises a circular wire clamp main body, a pressing sleeve with an opening at one end, a moving rod, a piercing head and two stop blocks, the wire clamp main body is provided with a through arc-shaped groove and a trapezoid-shaped groove, the arc-shaped groove is communicated with the trapezoid-shaped groove, the pressing sleeve is in threaded connection with the wire clamp main body, the moving rod is in sliding connection with the wire clamp main body, and the piercing head and the two stop blocks are arranged on the moving rod. According to the utility model, the pressing sleeve is rotated to drive the moving rod to enable the puncturing head to puncture a wire, and the traditional mode that a nut is screwed by a wrench to enable the puncturing wire clamp sliding block to move downwards is replaced, so that the high-altitude operation of a worker is simpler and more convenient.

Description

Technical Field

[0001] This utility model relates to the field of surge arrester technology, and in particular to a pillar-type zinc oxide surge arrester. Background Technology

[0002] Zinc oxide surge arresters are surge arresters with excellent protective performance. Utilizing the excellent nonlinear volt-ampere characteristics of zinc oxide, the current flowing through the arrester is extremely small (microamps or milliamps) under normal operating voltage; when an overvoltage occurs, the resistance drops sharply, dissipating the overvoltage energy and achieving a protective effect. However, existing zinc oxide surge arresters require a wrench to tighten the nut to move the clamp slider downwards and pierce the wire when fixing it in place. This method is inconvenient for workers operating at heights and has its shortcomings. Utility Model Content

[0003] The purpose of this utility model is to solve the above-mentioned technical problems and provide a pillar-type zinc oxide surge arrester.

[0004] The technical solution of this utility model is as follows: A pillar-type zinc oxide surge arrester includes a surge arrester body, a disconnector, a busbar, a piercing clamp, a bracket, an insulating cover, and a grounding rod. The disconnector, the busbar, and the insulating cover are all mounted on the surge arrester body. The bracket is mounted at the connection between the surge arrester body and the disconnector. The piercing clamp and the grounding rod are both mounted on the busbar. The piercing clamp includes a circular clamp body, a pressure sleeve with one open end, a moving rod, a piercing head, and two stops. The clamp body has a through arc-shaped groove and a trapezoidal groove, which are connected. The pressure sleeve is threaded to the clamp body, and the moving rod is slidably connected to the clamp body. The piercing head and the two stops are both mounted on the moving rod.

[0005] Preferably, the bottom end of the stop is arc-shaped.

[0006] Preferably, the outer wall of the pressure sleeve is provided with uneven stripes.

[0007] Preferably, the grounding rod is rotatably provided with an openable and closable insulating sleeve.

[0008] The beneficial effects of this utility model are: In this utility model, rotating the pressure sleeve drives the moving rod to make the piercing head pierce the wire, which replaces the traditional method of using a wrench to tighten the nut to make the piercing wire clamp slider move downward, making it easier for workers to operate at heights. Attached Figure Description

[0009] Fig. 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present invention;

[0010] Fig. 2This is a cross-sectional view of the puncture line clip in a preferred embodiment of the present invention.

[0011] Figure reference numerals: surge arrester body 10, disconnector 2, busbar 3, piercing clamp 4, clamp body 401, pressure sleeve 402, moving rod 403, piercing head 404, stop block 405, bracket 5, insulating cover 6, grounding rod 7, openable insulating sleeve 701. Detailed Implementation

[0012] 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.

[0013] Reference Figs. 1-2 A pillar-type zinc oxide surge arrester includes an arrester body 10, a disconnector 2, a busbar 3, a piercing clamp 4, a bracket 5, an insulating cover 6, and a grounding rod 7. The disconnector 2, the busbar 3, and the insulating cover 6 are all mounted on the arrester body 10. The bracket 5 is located at the connection between the arrester body 10 and the disconnector 2. The piercing clamp 4 and the grounding rod 7 are both mounted on the busbar 3. The piercing clamp 4 includes a circular clamp body 401 and a... The clamp body 401 has an open-ended pressure sleeve 402, a moving rod 403, a piercing head 404, and two stops 405. The clamp body 401 is provided with a through arc-shaped groove 4011 and a trapezoidal groove 4012. The arc-shaped groove 4011 and the trapezoidal groove 4012 are connected. The pressure sleeve 402 is threadedly connected to the clamp body 401. The moving rod 403 is slidably connected to the clamp body 401. The piercing head 404 and the two stops 405 are both disposed on the moving rod 403. In this invention, the trapezoidal groove 4012 is larger than the diameter of the wire. After the surge arrester body 10 is installed and fixed on the crossarm, the wire is passed through the trapezoidal groove 4012 and pressed downward to match the arc groove 4011, preventing the wire from moving left or right. The pressure sleeve 402 is installed on the clamp body 401 and rotated downward. The inner wall of the top of the pressure sleeve 402 abuts against the moving rod 403, causing it to move downward. The piercing head 404 moves downward to pierce the wire, conduct electricity, and fix the wire. This clamp structure only requires manually rotating the pressure sleeve 402 downward to drive the moving rod 403 so that the piercing head 404 pierces the wire, replacing the traditional method of using a wrench to tighten the nut to move the piercing clamp slider downward, making it easier for workers to operate at heights. Specifically, the surge arrester body 10 has screws at the bottom and top, which are fixedly connected to the crossarm and busbar 3 respectively by bolts. The grounding rod 7 has a screw at the bottom, which is fixedly connected to the busbar 3 by bolts. The clamp body 401 has a screw, which is fixedly connected to the busbar 3 by bolts.

[0014] As a preferred embodiment of this utility model, it may also have the following additional technical features:

[0015] In this embodiment, the bottom end of the stop 405 is arc-shaped. After the piercing head 404 moves downward to pierce the wire, the stop 405 abuts against the wire to prevent the wire from moving upward, thereby fixing the wire firmly on the wire clamp body 401.

[0016] In this embodiment, the outer wall of the pressure sleeve 402 is provided with uneven stripes to facilitate the rotation of the pressure sleeve 402.

[0017] In this embodiment, the grounding rod 7 is rotatably equipped with an openable / closeable insulating sleeve 701. Specifically, one end of the grounding rod 7 is connected to the openable / closeable insulating sleeve 701 via a shaft pin. Inside the round head of the openable / closeable insulating sleeve 701, a spring plate is mounted on the end of the grounding rod 7 via a spring rivet. The openable / closeable insulating sleeve 701 can rotate 90 degrees up and down around the center of the shaft pin and is positioned and locked in a fixed position by the spring plate, so that the grounding rod 7 can work normally or provide protective insulation. The installation of the openable / closeable insulating sleeve 701 on the grounding rod 7 is prior art and will not be described further here.

[0018] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0019] 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 pillar-type zinc oxide surge arrester, comprising an arrester body (10), a disconnector (2), a busbar (3), a piercing clamp (4), a bracket (5), an insulating cover (6), and a grounding rod (7), wherein the disconnector (2), the busbar (3), and the insulating cover (6) are all disposed on the arrester body (10), the bracket (5) is disposed at the connection between the arrester body (10) and the disconnector (2), and the piercing clamp (4) and the grounding rod (7) are both disposed on the busbar (3), characterized in that: The piercing clamp (4) includes a circular clamp body (401), a pressure sleeve (402) with one open end, a moving rod (403), a piercing head (404), and two stops (405). The clamp body (401) is provided with a through arc-shaped groove (4011) and a trapezoidal groove (4012), which are connected. The pressure sleeve (402) is threaded to the clamp body (401), and the moving rod (403) is slidably connected to the clamp body (401). The piercing head (404) and the two stops (405) are both disposed on the moving rod (403).

2. The pillar-type zinc oxide surge arrester according to claim 1, characterized in that: The bottom of the stop (405) is arc-shaped.

3. A pillar-type zinc oxide surge arrester according to claim 1, characterized in that: The outer wall of the pressure sleeve (402) is provided with uneven stripes.

4. A pillar-type zinc oxide surge arrester according to claim 1, characterized in that: The grounding rod (7) is rotatably provided with an openable and closable insulating sleeve (701).

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